From: John W. Linville <linville@redhat.com>
Date: Mon, 18 Aug 2008 16:47:20 -0400
Subject: [wireless] mac80211 update to version from 2.6.26
Message-id: 20080818204717.GD9806@redhat.com
O-Subject: [RHEL5 patch 2/6] mac80211 update to version from 2.6.26
Bugzilla: 438391 438464 446076
This enormous patch updates the mac80211 component to match what was
released in 2.6.26 upstream. This is needed to support the
mac80211-based driver backports. Further, I believe this version is
sufficiently mature to allow for kABI symbol whitelisting (if you
insist).
BZ438391
BZ438464
BZ446076
Tested by me and some people.redhat.com watchers, with good results.
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 3e64159..0b5e03e 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -97,6 +97,7 @@
#define IEEE80211_MAX_FRAME_LEN 2352
#define IEEE80211_MAX_SSID_LEN 32
+#define IEEE80211_MAX_MESH_ID_LEN 32
struct ieee80211_hdr {
__le16 frame_control;
@@ -109,6 +110,16 @@ struct ieee80211_hdr {
} __attribute__ ((packed));
+struct ieee80211s_hdr {
+ u8 flags;
+ u8 ttl;
+ __le32 seqnum;
+ u8 eaddr1[6];
+ u8 eaddr2[6];
+ u8 eaddr3[6];
+} __attribute__ ((packed));
+
+
struct ieee80211_mgmt {
__le16 frame_control;
__le16 duration;
@@ -206,6 +217,23 @@ struct ieee80211_mgmt {
__le16 params;
__le16 reason_code;
} __attribute__((packed)) delba;
+ struct{
+ u8 action_code;
+ /* capab_info for open and confirm,
+ * reason for close
+ */
+ __le16 aux;
+ /* Followed in plink_confirm by status
+ * code, AID and supported rates,
+ * and directly by supported rates in
+ * plink_open and plink_close
+ */
+ u8 variable[0];
+ } __attribute__((packed)) plink_action;
+ struct{
+ u8 action_code;
+ u8 variable[0];
+ } __attribute__((packed)) mesh_action;
} u;
} __attribute__ ((packed)) action;
} u;
@@ -237,8 +265,8 @@ struct ieee80211_bar {
__le16 duration;
__u8 ra[6];
__u8 ta[6];
- __u16 control;
- __u16 start_seq_num;
+ __le16 control;
+ __le16 start_seq_num;
} __attribute__((packed));
/**
@@ -287,6 +315,12 @@ struct ieee80211_ht_addt_info {
#define IEEE80211_HT_IE_NON_GF_STA_PRSNT 0x0004
#define IEEE80211_HT_IE_NON_HT_STA_PRSNT 0x0010
+/* MIMO Power Save Modes */
+#define WLAN_HT_CAP_MIMO_PS_STATIC 0
+#define WLAN_HT_CAP_MIMO_PS_DYNAMIC 1
+#define WLAN_HT_CAP_MIMO_PS_INVALID 2
+#define WLAN_HT_CAP_MIMO_PS_DISABLED 3
+
/* Authentication algorithms */
#define WLAN_AUTH_OPEN 0
#define WLAN_AUTH_SHARED_KEY 1
@@ -431,6 +465,19 @@ enum ieee80211_eid {
WLAN_EID_TS_DELAY = 43,
WLAN_EID_TCLAS_PROCESSING = 44,
WLAN_EID_QOS_CAPA = 46,
+ /* 802.11s
+ *
+ * All mesh EID numbers are pending IEEE 802.11 ANA approval.
+ * The numbers have been incremented from those suggested in
+ * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
+ * EXT_SUPP_RATES.
+ */
+ WLAN_EID_MESH_CONFIG = 51,
+ WLAN_EID_MESH_ID = 52,
+ WLAN_EID_PEER_LINK = 55,
+ WLAN_EID_PREQ = 68,
+ WLAN_EID_PREP = 69,
+ WLAN_EID_PERR = 70,
/* 802.11h */
WLAN_EID_PWR_CONSTRAINT = 32,
WLAN_EID_PWR_CAPABILITY = 33,
@@ -472,6 +519,13 @@ enum ieee80211_back_actioncode {
WLAN_ACTION_DELBA = 2,
};
+/* BACK (block-ack) parties */
+enum ieee80211_back_parties {
+ WLAN_BACK_RECIPIENT = 0,
+ WLAN_BACK_INITIATOR = 1,
+ WLAN_BACK_TIMER = 2,
+};
+
/* A-MSDU 802.11n */
#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 538ee1d..ea6517e 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -7,6 +7,18 @@
*/
/**
+ * DOC: Station handling
+ *
+ * Stations are added per interface, but a special case exists with VLAN
+ * interfaces. When a station is bound to an AP interface, it may be moved
+ * into a VLAN identified by a VLAN interface index (%NL80211_ATTR_STA_VLAN).
+ * The station is still assumed to belong to the AP interface it was added
+ * to.
+ *
+ * TODO: need more info?
+ */
+
+/**
* enum nl80211_commands - supported nl80211 commands
*
* @NL80211_CMD_UNSPEC: unspecified command to catch errors
@@ -37,6 +49,47 @@
* userspace to request deletion of a virtual interface, then requires
* attribute %NL80211_ATTR_IFINDEX.
*
+ * @NL80211_CMD_GET_KEY: Get sequence counter information for a key specified
+ * by %NL80211_ATTR_KEY_IDX and/or %NL80211_ATTR_MAC.
+ * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT or
+ * %NL80211_ATTR_KEY_THRESHOLD.
+ * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA,
+ * %NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC and %NL80211_ATTR_KEY_CIPHER
+ * attributes.
+ * @NL80211_CMD_DEL_KEY: delete a key identified by %NL80211_ATTR_KEY_IDX
+ * or %NL80211_ATTR_MAC.
+ *
+ * @NL80211_CMD_GET_BEACON: retrieve beacon information (returned in a
+ * %NL80222_CMD_NEW_BEACON message)
+ * @NL80211_CMD_SET_BEACON: set the beacon on an access point interface
+ * using the %NL80211_ATTR_BEACON_INTERVAL, %NL80211_ATTR_DTIM_PERIOD,
+ * %NL80211_BEACON_HEAD and %NL80211_BEACON_TAIL attributes.
+ * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface,
+ * parameters are like for %NL80211_CMD_SET_BEACON.
+ * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it
+ *
+ * @NL80211_CMD_GET_STATION: Get station attributes for station identified by
+ * %NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_SET_STATION: Set station attributes for station identified by
+ * %NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_NEW_STATION: Add a station with given attributes to the
+ * the interface identified by %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_DEL_STATION: Remove a station identified by %NL80211_ATTR_MAC
+ * or, if no MAC address given, all stations, on the interface identified
+ * by %NL80211_ATTR_IFINDEX.
+ *
+ * @NL80211_CMD_GET_MPATH: Get mesh path attributes for mesh path to
+ * destination %NL80211_ATTR_MAC on the interface identified by
+ * %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_SET_MPATH: Set mesh path attributes for mesh path to
+ * destination %NL80211_ATTR_MAC on the interface identified by
+ * %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_NEW_PATH: Add a mesh path with given attributes to the
+ * the interface identified by %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_DEL_PATH: Remove a mesh path identified by %NL80211_ATTR_MAC
+ * or, if no MAC address given, all mesh paths, on the interface identified
+ * by %NL80211_ATTR_IFINDEX.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -54,8 +107,28 @@ enum nl80211_commands {
NL80211_CMD_NEW_INTERFACE,
NL80211_CMD_DEL_INTERFACE,
+ NL80211_CMD_GET_KEY,
+ NL80211_CMD_SET_KEY,
+ NL80211_CMD_NEW_KEY,
+ NL80211_CMD_DEL_KEY,
+
+ NL80211_CMD_GET_BEACON,
+ NL80211_CMD_SET_BEACON,
+ NL80211_CMD_NEW_BEACON,
+ NL80211_CMD_DEL_BEACON,
+
+ NL80211_CMD_GET_STATION,
+ NL80211_CMD_SET_STATION,
+ NL80211_CMD_NEW_STATION,
+ NL80211_CMD_DEL_STATION,
+
/* add commands here */
+ NL80211_CMD_GET_MPATH,
+ NL80211_CMD_SET_MPATH,
+ NL80211_CMD_NEW_MPATH,
+ NL80211_CMD_DEL_MPATH,
+
/* used to define NL80211_CMD_MAX below */
__NL80211_CMD_AFTER_LAST,
NL80211_CMD_MAX = __NL80211_CMD_AFTER_LAST - 1
@@ -75,6 +148,50 @@ enum nl80211_commands {
* @NL80211_ATTR_IFNAME: network interface name
* @NL80211_ATTR_IFTYPE: type of virtual interface, see &enum nl80211_iftype
*
+ * @NL80211_ATTR_MAC: MAC address (various uses)
+ *
+ * @NL80211_ATTR_KEY_DATA: (temporal) key data; for TKIP this consists of
+ * 16 bytes encryption key followed by 8 bytes each for TX and RX MIC
+ * keys
+ * @NL80211_ATTR_KEY_IDX: key ID (u8, 0-3)
+ * @NL80211_ATTR_KEY_CIPHER: key cipher suite (u32, as defined by IEEE 802.11
+ * section 7.3.2.25.1, e.g. 0x000FAC04)
+ * @NL80211_ATTR_KEY_SEQ: transmit key sequence number (IV/PN) for TKIP and
+ * CCMP keys, each six bytes in little endian
+ *
+ * @NL80211_ATTR_BEACON_INTERVAL: beacon interval in TU
+ * @NL80211_ATTR_DTIM_PERIOD: DTIM period for beaconing
+ * @NL80211_ATTR_BEACON_HEAD: portion of the beacon before the TIM IE
+ * @NL80211_ATTR_BEACON_TAIL: portion of the beacon after the TIM IE
+ *
+ * @NL80211_ATTR_STA_AID: Association ID for the station (u16)
+ * @NL80211_ATTR_STA_FLAGS: flags, nested element with NLA_FLAG attributes of
+ * &enum nl80211_sta_flags.
+ * @NL80211_ATTR_STA_LISTEN_INTERVAL: listen interval as defined by
+ * IEEE 802.11 7.3.1.6 (u16).
+ * @NL80211_ATTR_STA_SUPPORTED_RATES: supported rates, array of supported
+ * rates as defined by IEEE 802.11 7.3.2.2 but without the length
+ * restriction (at most %NL80211_MAX_SUPP_RATES).
+ * @NL80211_ATTR_STA_VLAN: interface index of VLAN interface to move station
+ * to, or the AP interface the station was originally added to to.
+ * @NL80211_ATTR_STA_INFO: information about a station, part of station info
+ * given for %NL80211_CMD_GET_STATION, nested attribute containing
+ * info as possible, see &enum nl80211_sta_info.
+ *
+ * @NL80211_ATTR_WIPHY_BANDS: Information about an operating bands,
+ * consisting of a nested array.
+ *
+ * @NL80211_ATTR_MESH_ID: mesh id (1-32 bytes).
+ * @NL80211_ATTR_PLINK_ACTION: action to perform on the mesh peer link.
+ * @NL80211_ATTR_MPATH_NEXT_HOP: MAC address of the next hop for a mesh path.
+ * @NL80211_ATTR_MPATH_INFO: information about a mesh_path, part of mesh path
+ * info given for %NL80211_CMD_GET_MPATH, nested attribute described at
+ * &enum nl80211_mpath_info.
+ *
+ *
+ * @NL80211_ATTR_MNTR_FLAGS: flags, nested element with NLA_FLAG attributes of
+ * &enum nl80211_mntr_flags.
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -89,12 +206,43 @@ enum nl80211_attrs {
NL80211_ATTR_IFNAME,
NL80211_ATTR_IFTYPE,
+ NL80211_ATTR_MAC,
+
+ NL80211_ATTR_KEY_DATA,
+ NL80211_ATTR_KEY_IDX,
+ NL80211_ATTR_KEY_CIPHER,
+ NL80211_ATTR_KEY_SEQ,
+ NL80211_ATTR_KEY_DEFAULT,
+
+ NL80211_ATTR_BEACON_INTERVAL,
+ NL80211_ATTR_DTIM_PERIOD,
+ NL80211_ATTR_BEACON_HEAD,
+ NL80211_ATTR_BEACON_TAIL,
+
+ NL80211_ATTR_STA_AID,
+ NL80211_ATTR_STA_FLAGS,
+ NL80211_ATTR_STA_LISTEN_INTERVAL,
+ NL80211_ATTR_STA_SUPPORTED_RATES,
+ NL80211_ATTR_STA_VLAN,
+ NL80211_ATTR_STA_INFO,
+
+ NL80211_ATTR_WIPHY_BANDS,
+
+ NL80211_ATTR_MNTR_FLAGS,
+
/* add attributes here, update the policy in nl80211.c */
+ NL80211_ATTR_MESH_ID,
+ NL80211_ATTR_STA_PLINK_ACTION,
+ NL80211_ATTR_MPATH_NEXT_HOP,
+ NL80211_ATTR_MPATH_INFO,
+
__NL80211_ATTR_AFTER_LAST,
NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
};
+#define NL80211_MAX_SUPP_RATES 32
+
/**
* enum nl80211_iftype - (virtual) interface types
*
@@ -105,6 +253,7 @@ enum nl80211_attrs {
* @NL80211_IFTYPE_AP_VLAN: VLAN interface for access points
* @NL80211_IFTYPE_WDS: wireless distribution interface
* @NL80211_IFTYPE_MONITOR: monitor interface receiving all frames
+ * @NL80211_IFTYPE_MESH_POINT: mesh point
* @NL80211_IFTYPE_MAX: highest interface type number currently defined
* @__NL80211_IFTYPE_AFTER_LAST: internal use
*
@@ -120,10 +269,197 @@ enum nl80211_iftype {
NL80211_IFTYPE_AP_VLAN,
NL80211_IFTYPE_WDS,
NL80211_IFTYPE_MONITOR,
+ NL80211_IFTYPE_MESH_POINT,
/* keep last */
__NL80211_IFTYPE_AFTER_LAST,
NL80211_IFTYPE_MAX = __NL80211_IFTYPE_AFTER_LAST - 1
};
+/**
+ * enum nl80211_sta_flags - station flags
+ *
+ * Station flags. When a station is added to an AP interface, it is
+ * assumed to be already associated (and hence authenticated.)
+ *
+ * @NL80211_STA_FLAG_AUTHORIZED: station is authorized (802.1X)
+ * @NL80211_STA_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
+ * with short barker preamble
+ * @NL80211_STA_FLAG_WME: station is WME/QoS capable
+ */
+enum nl80211_sta_flags {
+ __NL80211_STA_FLAG_INVALID,
+ NL80211_STA_FLAG_AUTHORIZED,
+ NL80211_STA_FLAG_SHORT_PREAMBLE,
+ NL80211_STA_FLAG_WME,
+
+ /* keep last */
+ __NL80211_STA_FLAG_AFTER_LAST,
+ NL80211_STA_FLAG_MAX = __NL80211_STA_FLAG_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_sta_info - station information
+ *
+ * These attribute types are used with %NL80211_ATTR_STA_INFO
+ * when getting information about a station.
+ *
+ * @__NL80211_STA_INFO_INVALID: attribute number 0 is reserved
+ * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs)
+ * @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station)
+ * @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station)
+ * @__NL80211_STA_INFO_AFTER_LAST: internal
+ * @NL80211_STA_INFO_MAX: highest possible station info attribute
+ */
+enum nl80211_sta_info {
+ __NL80211_STA_INFO_INVALID,
+ NL80211_STA_INFO_INACTIVE_TIME,
+ NL80211_STA_INFO_RX_BYTES,
+ NL80211_STA_INFO_TX_BYTES,
+ NL80211_STA_INFO_LLID,
+ NL80211_STA_INFO_PLID,
+ NL80211_STA_INFO_PLINK_STATE,
+
+ /* keep last */
+ __NL80211_STA_INFO_AFTER_LAST,
+ NL80211_STA_INFO_MAX = __NL80211_STA_INFO_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_mpath_flags - nl80211 mesh path flags
+ *
+ * @NL80211_MPATH_FLAG_ACTIVE: the mesh path is active
+ * @NL80211_MPATH_FLAG_RESOLVING: the mesh path discovery process is running
+ * @NL80211_MPATH_FLAG_DSN_VALID: the mesh path contains a valid DSN
+ * @NL80211_MPATH_FLAG_FIXED: the mesh path has been manually set
+ * @NL80211_MPATH_FLAG_RESOLVED: the mesh path discovery process succeeded
+ */
+enum nl80211_mpath_flags {
+ NL80211_MPATH_FLAG_ACTIVE = 1<<0,
+ NL80211_MPATH_FLAG_RESOLVING = 1<<1,
+ NL80211_MPATH_FLAG_DSN_VALID = 1<<2,
+ NL80211_MPATH_FLAG_FIXED = 1<<3,
+ NL80211_MPATH_FLAG_RESOLVED = 1<<4,
+};
+
+/**
+ * enum nl80211_mpath_info - mesh path information
+ *
+ * These attribute types are used with %NL80211_ATTR_MPATH_INFO when getting
+ * information about a mesh path.
+ *
+ * @__NL80211_MPATH_INFO_INVALID: attribute number 0 is reserved
+ * @NL80211_ATTR_MPATH_FRAME_QLEN: number of queued frames for this destination
+ * @NL80211_ATTR_MPATH_DSN: destination sequence number
+ * @NL80211_ATTR_MPATH_METRIC: metric (cost) of this mesh path
+ * @NL80211_ATTR_MPATH_EXPTIME: expiration time for the path, in msec from now
+ * @NL80211_ATTR_MPATH_FLAGS: mesh path flags, enumerated in
+ * &enum nl80211_mpath_flags;
+ * @NL80211_ATTR_MPATH_DISCOVERY_TIMEOUT: total path discovery timeout, in msec
+ * @NL80211_ATTR_MPATH_DISCOVERY_RETRIES: mesh path discovery retries
+ */
+enum nl80211_mpath_info {
+ __NL80211_MPATH_INFO_INVALID,
+ NL80211_MPATH_INFO_FRAME_QLEN,
+ NL80211_MPATH_INFO_DSN,
+ NL80211_MPATH_INFO_METRIC,
+ NL80211_MPATH_INFO_EXPTIME,
+ NL80211_MPATH_INFO_FLAGS,
+ NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
+ NL80211_MPATH_INFO_DISCOVERY_RETRIES,
+
+ /* keep last */
+ __NL80211_MPATH_INFO_AFTER_LAST,
+ NL80211_MPATH_INFO_MAX = __NL80211_MPATH_INFO_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_band_attr - band attributes
+ * @__NL80211_BAND_ATTR_INVALID: attribute number 0 is reserved
+ * @NL80211_BAND_ATTR_FREQS: supported frequencies in this band,
+ * an array of nested frequency attributes
+ * @NL80211_BAND_ATTR_RATES: supported bitrates in this band,
+ * an array of nested bitrate attributes
+ */
+enum nl80211_band_attr {
+ __NL80211_BAND_ATTR_INVALID,
+ NL80211_BAND_ATTR_FREQS,
+ NL80211_BAND_ATTR_RATES,
+
+ /* keep last */
+ __NL80211_BAND_ATTR_AFTER_LAST,
+ NL80211_BAND_ATTR_MAX = __NL80211_BAND_ATTR_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_frequency_attr - frequency attributes
+ * @NL80211_FREQUENCY_ATTR_FREQ: Frequency in MHz
+ * @NL80211_FREQUENCY_ATTR_DISABLED: Channel is disabled in current
+ * regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_PASSIVE_SCAN: Only passive scanning is
+ * permitted on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_NO_IBSS: IBSS networks are not permitted
+ * on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_RADAR: Radar detection is mandatory
+ * on this channel in current regulatory domain.
+ */
+enum nl80211_frequency_attr {
+ __NL80211_FREQUENCY_ATTR_INVALID,
+ NL80211_FREQUENCY_ATTR_FREQ,
+ NL80211_FREQUENCY_ATTR_DISABLED,
+ NL80211_FREQUENCY_ATTR_PASSIVE_SCAN,
+ NL80211_FREQUENCY_ATTR_NO_IBSS,
+ NL80211_FREQUENCY_ATTR_RADAR,
+
+ /* keep last */
+ __NL80211_FREQUENCY_ATTR_AFTER_LAST,
+ NL80211_FREQUENCY_ATTR_MAX = __NL80211_FREQUENCY_ATTR_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_bitrate_attr - bitrate attributes
+ * @NL80211_BITRATE_ATTR_RATE: Bitrate in units of 100 kbps
+ * @NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE: Short preamble supported
+ * in 2.4 GHz band.
+ */
+enum nl80211_bitrate_attr {
+ __NL80211_BITRATE_ATTR_INVALID,
+ NL80211_BITRATE_ATTR_RATE,
+ NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE,
+
+ /* keep last */
+ __NL80211_BITRATE_ATTR_AFTER_LAST,
+ NL80211_BITRATE_ATTR_MAX = __NL80211_BITRATE_ATTR_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_mntr_flags - monitor configuration flags
+ *
+ * Monitor configuration flags.
+ *
+ * @__NL80211_MNTR_FLAG_INVALID: reserved
+ *
+ * @NL80211_MNTR_FLAG_FCSFAIL: pass frames with bad FCS
+ * @NL80211_MNTR_FLAG_PLCPFAIL: pass frames with bad PLCP
+ * @NL80211_MNTR_FLAG_CONTROL: pass control frames
+ * @NL80211_MNTR_FLAG_OTHER_BSS: disable BSSID filtering
+ * @NL80211_MNTR_FLAG_COOK_FRAMES: report frames after processing.
+ * overrides all other flags.
+ *
+ * @__NL80211_MNTR_FLAG_AFTER_LAST: internal use
+ * @NL80211_MNTR_FLAG_MAX: highest possible monitor flag
+ */
+enum nl80211_mntr_flags {
+ __NL80211_MNTR_FLAG_INVALID,
+ NL80211_MNTR_FLAG_FCSFAIL,
+ NL80211_MNTR_FLAG_PLCPFAIL,
+ NL80211_MNTR_FLAG_CONTROL,
+ NL80211_MNTR_FLAG_OTHER_BSS,
+ NL80211_MNTR_FLAG_COOK_FRAMES,
+
+ /* keep last */
+ __NL80211_MNTR_FLAG_AFTER_LAST,
+ NL80211_MNTR_FLAG_MAX = __NL80211_MNTR_FLAG_AFTER_LAST - 1
+};
+
#endif /* __LINUX_NL80211_H */
diff --git a/include/linux/wireless.h b/include/linux/wireless.h
index 3ede0ee..8b8bf41 100644
--- a/include/linux/wireless.h
+++ b/include/linux/wireless.h
@@ -438,6 +438,7 @@
#define IW_MODE_REPEAT 4 /* Wireless Repeater (forwarder) */
#define IW_MODE_SECOND 5 /* Secondary master/repeater (backup) */
#define IW_MODE_MONITOR 6 /* Passive monitor (listen only) */
+#define IW_MODE_MESH 7 /* Mesh (IEEE 802.11s) network */
/* Statistics flags (bitmask in updated) */
#define IW_QUAL_QUAL_UPDATED 0x01 /* Value was updated since last read */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d30960e..ae1ca6a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4,6 +4,7 @@
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/nl80211.h>
+#include <net/wireless_compat.h>
#include <net/genetlink.h>
/*
@@ -12,6 +13,16 @@
* Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
*/
+/**
+ * struct vif_params - describes virtual interface parameters
+ * @mesh_id: mesh ID to use
+ * @mesh_id_len: length of the mesh ID
+ */
+struct vif_params {
+ u8 *mesh_id;
+ int mesh_id_len;
+};
+
/* Radiotap header iteration
* implemented in net/wireless/radiotap.c
* docs in Documentation/networking/radiotap-headers.txt
@@ -49,6 +60,216 @@ extern int ieee80211_radiotap_iterator_next(
struct ieee80211_radiotap_iterator *iterator);
+ /**
+ * struct key_params - key information
+ *
+ * Information about a key
+ *
+ * @key: key material
+ * @key_len: length of key material
+ * @cipher: cipher suite selector
+ * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used
+ * with the get_key() callback, must be in little endian,
+ * length given by @seq_len.
+ */
+struct key_params {
+ u8 *key;
+ u8 *seq;
+ int key_len;
+ int seq_len;
+ u32 cipher;
+};
+
+/**
+ * struct beacon_parameters - beacon parameters
+ *
+ * Used to configure the beacon for an interface.
+ *
+ * @head: head portion of beacon (before TIM IE)
+ * or %NULL if not changed
+ * @tail: tail portion of beacon (after TIM IE)
+ * or %NULL if not changed
+ * @interval: beacon interval or zero if not changed
+ * @dtim_period: DTIM period or zero if not changed
+ * @head_len: length of @head
+ * @tail_len: length of @tail
+ */
+struct beacon_parameters {
+ u8 *head, *tail;
+ int interval, dtim_period;
+ int head_len, tail_len;
+};
+
+/**
+ * enum station_flags - station flags
+ *
+ * Station capability flags. Note that these must be the bits
+ * according to the nl80211 flags.
+ *
+ * @STATION_FLAG_CHANGED: station flags were changed
+ * @STATION_FLAG_AUTHORIZED: station is authorized to send frames (802.1X)
+ * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
+ * with short preambles
+ * @STATION_FLAG_WME: station is WME/QoS capable
+ */
+enum station_flags {
+ STATION_FLAG_CHANGED = 1<<0,
+ STATION_FLAG_AUTHORIZED = 1<<NL80211_STA_FLAG_AUTHORIZED,
+ STATION_FLAG_SHORT_PREAMBLE = 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
+ STATION_FLAG_WME = 1<<NL80211_STA_FLAG_WME,
+};
+
+/**
+ * enum plink_action - actions to perform in mesh peers
+ *
+ * @PLINK_ACTION_INVALID: action 0 is reserved
+ * @PLINK_ACTION_OPEN: start mesh peer link establishment
+ * @PLINK_ACTION_BLOCL: block traffic from this mesh peer
+ */
+enum plink_actions {
+ PLINK_ACTION_INVALID,
+ PLINK_ACTION_OPEN,
+ PLINK_ACTION_BLOCK,
+};
+
+/**
+ * struct station_parameters - station parameters
+ *
+ * Used to change and create a new station.
+ *
+ * @vlan: vlan interface station should belong to
+ * @supported_rates: supported rates in IEEE 802.11 format
+ * (or NULL for no change)
+ * @supported_rates_len: number of supported rates
+ * @station_flags: station flags (see &enum station_flags)
+ * @listen_interval: listen interval or -1 for no change
+ * @aid: AID or zero for no change
+ */
+struct station_parameters {
+ u8 *supported_rates;
+ struct net_device *vlan;
+ u32 station_flags;
+ int listen_interval;
+ u16 aid;
+ u8 supported_rates_len;
+ u8 plink_action;
+};
+
+/**
+ * enum station_info_flags - station information flags
+ *
+ * Used by the driver to indicate which info in &struct station_info
+ * it has filled in during get_station() or dump_station().
+ *
+ * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
+ * @STATION_INFO_RX_BYTES: @rx_bytes filled
+ * @STATION_INFO_TX_BYTES: @tx_bytes filled
+ * @STATION_INFO_LLID: @llid filled
+ * @STATION_INFO_PLID: @plid filled
+ * @STATION_INFO_PLINK_STATE: @plink_state filled
+ */
+enum station_info_flags {
+ STATION_INFO_INACTIVE_TIME = 1<<0,
+ STATION_INFO_RX_BYTES = 1<<1,
+ STATION_INFO_TX_BYTES = 1<<2,
+ STATION_INFO_LLID = 1<<3,
+ STATION_INFO_PLID = 1<<4,
+ STATION_INFO_PLINK_STATE = 1<<5,
+};
+
+/**
+ * struct station_info - station information
+ *
+ * Station information filled by driver for get_station() and dump_station.
+ *
+ * @filled: bitflag of flags from &enum station_info_flags
+ * @inactive_time: time since last station activity (tx/rx) in milliseconds
+ * @rx_bytes: bytes received from this station
+ * @tx_bytes: bytes transmitted to this station
+ * @llid: mesh local link id
+ * @plid: mesh peer link id
+ * @plink_state: mesh peer link state
+ */
+struct station_info {
+ u32 filled;
+ u32 inactive_time;
+ u32 rx_bytes;
+ u32 tx_bytes;
+ u16 llid;
+ u16 plid;
+ u8 plink_state;
+};
+
+/**
+ * enum monitor_flags - monitor flags
+ *
+ * Monitor interface configuration flags. Note that these must be the bits
+ * according to the nl80211 flags.
+ *
+ * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS
+ * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP
+ * @MONITOR_FLAG_CONTROL: pass control frames
+ * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering
+ * @MONITOR_FLAG_COOK_FRAMES: report frames after processing
+ */
+enum monitor_flags {
+ MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL,
+ MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL,
+ MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL,
+ MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS,
+ MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
+};
+
+/**
+ * enum mpath_info_flags - mesh path information flags
+ *
+ * Used by the driver to indicate which info in &struct mpath_info it has filled
+ * in during get_station() or dump_station().
+ *
+ * MPATH_INFO_FRAME_QLEN: @frame_qlen filled
+ * MPATH_INFO_DSN: @dsn filled
+ * MPATH_INFO_METRIC: @metric filled
+ * MPATH_INFO_EXPTIME: @exptime filled
+ * MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
+ * MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
+ * MPATH_INFO_FLAGS: @flags filled
+ */
+enum mpath_info_flags {
+ MPATH_INFO_FRAME_QLEN = BIT(0),
+ MPATH_INFO_DSN = BIT(1),
+ MPATH_INFO_METRIC = BIT(2),
+ MPATH_INFO_EXPTIME = BIT(3),
+ MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4),
+ MPATH_INFO_DISCOVERY_RETRIES = BIT(5),
+ MPATH_INFO_FLAGS = BIT(6),
+};
+
+/**
+ * struct mpath_info - mesh path information
+ *
+ * Mesh path information filled by driver for get_mpath() and dump_mpath().
+ *
+ * @filled: bitfield of flags from &enum mpath_info_flags
+ * @frame_qlen: number of queued frames for this destination
+ * @dsn: destination sequence number
+ * @metric: metric (cost) of this mesh path
+ * @exptime: expiration time for the mesh path from now, in msecs
+ * @flags: mesh path flags
+ * @discovery_timeout: total mesh path discovery timeout, in msecs
+ * @discovery_retries: mesh path discovery retries
+ */
+struct mpath_info {
+ u32 filled;
+ u32 frame_qlen;
+ u32 dsn;
+ u32 metric;
+ u32 exptime;
+ u32 discovery_timeout;
+ u8 discovery_retries;
+ u8 flags;
+};
+
+
/* from net/wireless.h */
struct wiphy;
@@ -71,13 +292,85 @@ struct wiphy;
*
* @change_virtual_intf: change type of virtual interface
*
+ * @add_key: add a key with the given parameters. @mac_addr will be %NULL
+ * when adding a group key.
+ *
+ * @get_key: get information about the key with the given parameters.
+ * @mac_addr will be %NULL when requesting information for a group
+ * key. All pointers given to the @callback function need not be valid
+ * after it returns.
+ *
+ * @del_key: remove a key given the @mac_addr (%NULL for a group key)
+ * and @key_index
+ *
+ * @set_default_key: set the default key on an interface
+ *
+ * @add_beacon: Add a beacon with given parameters, @head, @interval
+ * and @dtim_period will be valid, @tail is optional.
+ * @set_beacon: Change the beacon parameters for an access point mode
+ * interface. This should reject the call when no beacon has been
+ * configured.
+ * @del_beacon: Remove beacon configuration and stop sending the beacon.
+ *
+ * @add_station: Add a new station.
+ *
+ * @del_station: Remove a station; @mac may be NULL to remove all stations.
+ *
+ * @change_station: Modify a given station.
+ *
+ * @set_mesh_cfg: set mesh parameters (by now, just mesh id)
*/
struct cfg80211_ops {
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
- enum nl80211_iftype type);
+ enum nl80211_iftype type, u32 *flags,
+ struct vif_params *params);
int (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
int (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
- enum nl80211_iftype type);
+ enum nl80211_iftype type, u32 *flags,
+ struct vif_params *params);
+
+ int (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
+ u8 key_index, u8 *mac_addr,
+ struct key_params *params);
+ int (*get_key)(struct wiphy *wiphy, struct net_device *netdev,
+ u8 key_index, u8 *mac_addr, void *cookie,
+ void (*callback)(void *cookie, struct key_params*));
+ int (*del_key)(struct wiphy *wiphy, struct net_device *netdev,
+ u8 key_index, u8 *mac_addr);
+ int (*set_default_key)(struct wiphy *wiphy,
+ struct net_device *netdev,
+ u8 key_index);
+
+ int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev,
+ struct beacon_parameters *info);
+ int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev,
+ struct beacon_parameters *info);
+ int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev);
+
+
+ int (*add_station)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac, struct station_parameters *params);
+ int (*del_station)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac);
+ int (*change_station)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac, struct station_parameters *params);
+ int (*get_station)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac, struct station_info *sinfo);
+ int (*dump_station)(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *mac, struct station_info *sinfo);
+
+ int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *next_hop);
+ int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst);
+ int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *next_hop);
+ int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *next_hop,
+ struct mpath_info *pinfo);
+ int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *dst, u8 *next_hop,
+ struct mpath_info *pinfo);
};
#endif /* __NET_CFG80211_H */
diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
index 23a6be0..972d554 100644
--- a/include/net/ieee80211.h
+++ b/include/net/ieee80211.h
@@ -186,7 +186,6 @@ const char *escape_essid(const char *essid, u8 essid_len);
#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
#define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
#include <linux/netdevice.h>
-#include <linux/wireless.h>
#include <linux/if_arp.h> /* ARPHRD_ETHER */
#ifndef WIRELESS_SPY
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 95f87ae..6ef25c8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -22,7 +22,7 @@
#include <net/wireless.h>
#include <net/cfg80211.h>
-#include <net/mac80211_compat.h>
+#include <net/wireless_compat.h>
/**
* DOC: Introduction
@@ -40,7 +40,11 @@
* called in hardware interrupt context. The low-level driver must not call any
* other functions in hardware interrupt context. If there is a need for such
* call, the low-level driver should first ACK the interrupt and perform the
- * IEEE 802.11 code call after this, e.g. from a scheduled workqueue function.
+ * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even
+ * tasklet function.
+ *
+ * NOTE: If the driver opts to use the _irqsafe() functions, it may not also
+ * use the non-irqsafe functions!
*/
/**
@@ -71,93 +75,12 @@
* not do so then mac80211 may add this under certain circumstances.
*/
-#define IEEE80211_CHAN_W_SCAN 0x00000001
-#define IEEE80211_CHAN_W_ACTIVE_SCAN 0x00000002
-#define IEEE80211_CHAN_W_IBSS 0x00000004
-
-/* Channel information structure. Low-level driver is expected to fill in chan,
- * freq, and val fields. Other fields will be filled in by 80211.o based on
- * hostapd information and low-level driver does not need to use them. The
- * limits for each channel will be provided in 'struct ieee80211_conf' when
- * configuring the low-level driver with hw->config callback. If a device has
- * a default regulatory domain, IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
- * can be set to let the driver configure all fields */
-struct ieee80211_channel {
- short chan; /* channel number (IEEE 802.11) */
- short freq; /* frequency in MHz */
- int val; /* hw specific value for the channel */
- int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
- unsigned char power_level;
- unsigned char antenna_max;
-};
-
-#define IEEE80211_RATE_ERP 0x00000001
-#define IEEE80211_RATE_BASIC 0x00000002
-#define IEEE80211_RATE_PREAMBLE2 0x00000004
-#define IEEE80211_RATE_SUPPORTED 0x00000010
-#define IEEE80211_RATE_OFDM 0x00000020
-#define IEEE80211_RATE_CCK 0x00000040
-#define IEEE80211_RATE_MANDATORY 0x00000100
-
-#define IEEE80211_RATE_CCK_2 (IEEE80211_RATE_CCK | IEEE80211_RATE_PREAMBLE2)
-#define IEEE80211_RATE_MODULATION(f) \
- (f & (IEEE80211_RATE_CCK | IEEE80211_RATE_OFDM))
-
-/* Low-level driver should set PREAMBLE2, OFDM and CCK flags.
- * BASIC, SUPPORTED, ERP, and MANDATORY flags are set in 80211.o based on the
- * configuration. */
-struct ieee80211_rate {
- int rate; /* rate in 100 kbps */
- int val; /* hw specific value for the rate */
- int flags; /* IEEE80211_RATE_ flags */
- int val2; /* hw specific value for the rate when using short preamble
- * (only when IEEE80211_RATE_PREAMBLE2 flag is set, i.e., for
- * 2, 5.5, and 11 Mbps) */
- signed char min_rssi_ack;
- unsigned char min_rssi_ack_delta;
-
- /* following fields are set by 80211.o and need not be filled by the
- * low-level driver */
- int rate_inv; /* inverse of the rate (LCM(all rates) / rate) for
- * optimizing channel utilization estimates */
-};
-
/**
- * enum ieee80211_phymode - PHY modes
- *
- * @MODE_IEEE80211A: 5GHz as defined by 802.11a/802.11h
- * @MODE_IEEE80211B: 2.4 GHz as defined by 802.11b
- * @MODE_IEEE80211G: 2.4 GHz as defined by 802.11g (with OFDM),
- * backwards compatible with 11b mode
- * @NUM_IEEE80211_MODES: internal
+ * enum ieee80211_notification_type - Low level driver notification
+ * @IEEE80211_NOTIFY_RE_ASSOC: start the re-association sequence
*/
-enum ieee80211_phymode {
- MODE_IEEE80211A,
- MODE_IEEE80211B,
- MODE_IEEE80211G,
-
- /* keep last */
- NUM_IEEE80211_MODES
-};
-
-/**
- * struct ieee80211_ht_info - describing STA's HT capabilities
- *
- * This structure describes most essential parameters needed
- * to describe 802.11n HT capabilities for an STA.
- *
- * @ht_supported: is HT supported by STA, 0: no, 1: yes
- * @cap: HT capabilities map as described in 802.11n spec
- * @ampdu_factor: Maximum A-MPDU length factor
- * @ampdu_density: Minimum A-MPDU spacing
- * @supp_mcs_set: Supported MCS set as described in 802.11n spec
- */
-struct ieee80211_ht_info {
- u8 ht_supported;
- u16 cap; /* use IEEE80211_HT_CAP_ */
- u8 ampdu_factor;
- u8 ampdu_density;
- u8 supp_mcs_set[16];
+enum ieee80211_notification_types {
+ IEEE80211_NOTIFY_RE_ASSOC,
};
/**
@@ -177,46 +100,22 @@ struct ieee80211_ht_bss_info {
};
/**
- * struct ieee80211_hw_mode - PHY mode definition
- *
- * This structure describes the capabilities supported by the device
- * in a single PHY mode.
- *
- * @list: internal
- * @channels: pointer to array of supported channels
- * @rates: pointer to array of supported bitrates
- * @mode: the PHY mode for this definition
- * @num_channels: number of supported channels
- * @num_rates: number of supported bitrates
- * @ht_info: PHY's 802.11n HT abilities for this mode
- */
-struct ieee80211_hw_mode {
- struct list_head list;
- struct ieee80211_channel *channels;
- struct ieee80211_rate *rates;
- enum ieee80211_phymode mode;
- int num_channels;
- int num_rates;
- struct ieee80211_ht_info ht_info;
-};
-
-/**
* struct ieee80211_tx_queue_params - transmit queue configuration
*
* The information provided in this structure is required for QoS
- * transmit queue configuration.
+ * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29.
*
* @aifs: arbitration interface space [0..255, -1: use default]
* @cw_min: minimum contention window [will be a value of the form
* 2^n-1 in the range 1..1023; 0: use default]
* @cw_max: maximum contention window [like @cw_min]
- * @burst_time: maximum burst time in units of 0.1ms, 0 meaning disabled
+ * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled
*/
struct ieee80211_tx_queue_params {
- int aifs;
- int cw_min;
- int cw_max;
- int burst_time;
+ s16 aifs;
+ u16 cw_min;
+ u16 cw_max;
+ u16 txop;
};
/**
@@ -248,6 +147,7 @@ struct ieee80211_tx_queue_stats_data {
* @IEEE80211_TX_QUEUE_AFTER_BEACON: transmit queue for frames to be
* sent after a beacon
* @IEEE80211_TX_QUEUE_BEACON: transmit queue for beacon frames
+ * @NUM_TX_DATA_QUEUES_AMPDU: adding more queues for A-MPDU
*/
enum ieee80211_tx_queue {
IEEE80211_TX_QUEUE_DATA0,
@@ -263,11 +163,12 @@ enum ieee80211_tx_queue {
* this struct need to have fixed values. As soon as it is removed, we can
* fix these entries. */
IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
- IEEE80211_TX_QUEUE_BEACON = 7
+ IEEE80211_TX_QUEUE_BEACON = 7,
+ NUM_TX_DATA_QUEUES_AMPDU = 16
};
struct ieee80211_tx_queue_stats {
- struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES];
+ struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES_AMPDU];
};
struct ieee80211_low_level_stats {
@@ -277,61 +178,142 @@ struct ieee80211_low_level_stats {
unsigned int dot11RTSSuccessCount;
};
+/**
+ * enum ieee80211_bss_change - BSS change notification flags
+ *
+ * These flags are used with the bss_info_changed() callback
+ * to indicate which BSS parameter changed.
+ *
+ * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated),
+ * also implies a change in the AID.
+ * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed
+ * @BSS_CHANGED_ERP_PREAMBLE: preamble changed
+ * @BSS_CHANGED_HT: 802.11n parameters changed
+ */
+enum ieee80211_bss_change {
+ BSS_CHANGED_ASSOC = 1<<0,
+ BSS_CHANGED_ERP_CTS_PROT = 1<<1,
+ BSS_CHANGED_ERP_PREAMBLE = 1<<2,
+ BSS_CHANGED_HT = 1<<4,
+};
+
+/**
+ * struct ieee80211_bss_conf - holds the BSS's changing parameters
+ *
+ * This structure keeps information about a BSS (and an association
+ * to that BSS) that can change during the lifetime of the BSS.
+ *
+ * @assoc: association status
+ * @aid: association ID number, valid only when @assoc is true
+ * @use_cts_prot: use CTS protection
+ * @use_short_preamble: use 802.11b short preamble
+ * @timestamp: beacon timestamp
+ * @beacon_int: beacon interval
+ * @assoc_capability: capabbilities taken from assoc resp
+ * @assoc_ht: association in HT mode
+ * @ht_conf: ht capabilities
+ * @ht_bss_conf: ht extended capabilities
+ */
+struct ieee80211_bss_conf {
+ /* association related data */
+ bool assoc;
+ u16 aid;
+ /* erp related data */
+ bool use_cts_prot;
+ bool use_short_preamble;
+ u16 beacon_int;
+ u16 assoc_capability;
+ u64 timestamp;
+ /* ht related data */
+ bool assoc_ht;
+ struct ieee80211_ht_info *ht_conf;
+ struct ieee80211_ht_bss_info *ht_bss_conf;
+};
+
+/**
+ * enum mac80211_tx_control_flags - flags to describe Tx configuration for
+ * the Tx frame
+ *
+ * These flags are used with the @flags member of &ieee80211_tx_control
+ *
+ * @IEEE80211_TXCTL_REQ_TX_STATUS: request TX status callback for this frame.
+ * @IEEE80211_TXCTL_DO_NOT_ENCRYPT: send this frame without encryption;
+ * e.g., for EAPOL frame
+ * @IEEE80211_TXCTL_USE_RTS_CTS: use RTS-CTS before sending frame
+ * @IEEE80211_TXCTL_USE_CTS_PROTECT: use CTS protection for the frame (e.g.,
+ * for combined 802.11g / 802.11b networks)
+ * @IEEE80211_TXCTL_NO_ACK: tell the low level not to wait for an ack
+ * @IEEE80211_TXCTL_RATE_CTRL_PROBE
+ * @EEE80211_TXCTL_CLEAR_PS_FILT: clear powersave filter
+ * for destination station
+ * @IEEE80211_TXCTL_REQUEUE:
+ * @IEEE80211_TXCTL_FIRST_FRAGMENT: this is a first fragment of the frame
+ * @IEEE80211_TXCTL_LONG_RETRY_LIMIT: this frame should be send using the
+ * through set_retry_limit configured long
+ * retry value
+ * @IEEE80211_TXCTL_EAPOL_FRAME: internal to mac80211
+ * @IEEE80211_TXCTL_SEND_AFTER_DTIM: send this frame after DTIM beacon
+ * @IEEE80211_TXCTL_AMPDU: this frame should be sent as part of an A-MPDU
+ * @IEEE80211_TXCTL_OFDM_HT: this frame can be sent in HT OFDM rates. number
+ * of streams when this flag is on can be extracted
+ * from antenna_sel_tx, so if 1 antenna is marked
+ * use SISO, 2 antennas marked use MIMO, n antennas
+ * marked use MIMO_n.
+ * @IEEE80211_TXCTL_GREEN_FIELD: use green field protection for this frame
+ * @IEEE80211_TXCTL_40_MHZ_WIDTH: send this frame using 40 Mhz channel width
+ * @IEEE80211_TXCTL_DUP_DATA: duplicate data frame on both 20 Mhz channels
+ * @IEEE80211_TXCTL_SHORT_GI: send this frame using short guard interval
+ */
+enum mac80211_tx_control_flags {
+ IEEE80211_TXCTL_REQ_TX_STATUS = (1<<0),
+ IEEE80211_TXCTL_DO_NOT_ENCRYPT = (1<<1),
+ IEEE80211_TXCTL_USE_RTS_CTS = (1<<2),
+ IEEE80211_TXCTL_USE_CTS_PROTECT = (1<<3),
+ IEEE80211_TXCTL_NO_ACK = (1<<4),
+ IEEE80211_TXCTL_RATE_CTRL_PROBE = (1<<5),
+ IEEE80211_TXCTL_CLEAR_PS_FILT = (1<<6),
+ IEEE80211_TXCTL_REQUEUE = (1<<7),
+ IEEE80211_TXCTL_FIRST_FRAGMENT = (1<<8),
+ IEEE80211_TXCTL_SHORT_PREAMBLE = (1<<9),
+ IEEE80211_TXCTL_LONG_RETRY_LIMIT = (1<<10),
+ IEEE80211_TXCTL_EAPOL_FRAME = (1<<11),
+ IEEE80211_TXCTL_SEND_AFTER_DTIM = (1<<12),
+ IEEE80211_TXCTL_AMPDU = (1<<13),
+ IEEE80211_TXCTL_OFDM_HT = (1<<14),
+ IEEE80211_TXCTL_GREEN_FIELD = (1<<15),
+ IEEE80211_TXCTL_40_MHZ_WIDTH = (1<<16),
+ IEEE80211_TXCTL_DUP_DATA = (1<<17),
+ IEEE80211_TXCTL_SHORT_GI = (1<<18),
+};
+
/* Transmit control fields. This data structure is passed to low-level driver
* with each TX frame. The low-level driver is responsible for configuring
* the hardware to use given values (depending on what is supported). */
struct ieee80211_tx_control {
- int tx_rate; /* Transmit rate, given as the hw specific value for the
- * rate (from struct ieee80211_rate) */
- int rts_cts_rate; /* Transmit rate for RTS/CTS frame, given as the hw
- * specific value for the rate (from
- * struct ieee80211_rate) */
-
-#define IEEE80211_TXCTL_REQ_TX_STATUS (1<<0)/* request TX status callback for
- * this frame */
-#define IEEE80211_TXCTL_DO_NOT_ENCRYPT (1<<1) /* send this frame without
- * encryption; e.g., for EAPOL
- * frames */
-#define IEEE80211_TXCTL_USE_RTS_CTS (1<<2) /* use RTS-CTS before sending
- * frame */
-#define IEEE80211_TXCTL_USE_CTS_PROTECT (1<<3) /* use CTS protection for the
- * frame (e.g., for combined
- * 802.11g / 802.11b networks) */
-#define IEEE80211_TXCTL_NO_ACK (1<<4) /* tell the low level not to
- * wait for an ack */
-#define IEEE80211_TXCTL_RATE_CTRL_PROBE (1<<5)
-#define IEEE80211_TXCTL_CLEAR_DST_MASK (1<<6)
-#define IEEE80211_TXCTL_REQUEUE (1<<7)
-#define IEEE80211_TXCTL_FIRST_FRAGMENT (1<<8) /* this is a first fragment of
- * the frame */
-#define IEEE80211_TXCTL_LONG_RETRY_LIMIT (1<<10) /* this frame should be send
- * using the through
- * set_retry_limit configured
- * long retry value */
- u32 flags; /* tx control flags defined
- * above */
+ struct ieee80211_vif *vif;
+ struct ieee80211_rate *tx_rate;
+
+ /* Transmit rate for RTS/CTS frame */
+ struct ieee80211_rate *rts_cts_rate;
+
+ /* retry rate for the last retries */
+ struct ieee80211_rate *alt_retry_rate;
+
+ u32 flags; /* tx control flags defined above */
u8 key_idx; /* keyidx from hw->set_key(), undefined if
* IEEE80211_TXCTL_DO_NOT_ENCRYPT is set */
u8 retry_limit; /* 1 = only first attempt, 2 = one retry, ..
* This could be used when set_retry_limit
* is not implemented by the driver */
- u8 power_level; /* per-packet transmit power level, in dBm */
- u8 antenna_sel_tx; /* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */
+ u8 antenna_sel_tx; /* 0 = default/diversity, otherwise bit
+ * position represents antenna number used */
u8 icv_len; /* length of the ICV/MIC field in octets */
u8 iv_len; /* length of the IV field in octets */
u8 queue; /* hardware queue to use for this frame;
* 0 = highest, hw->queues-1 = lowest */
- struct ieee80211_rate *rate; /* internal 80211.o rate */
- struct ieee80211_rate *rts_rate; /* internal 80211.o rate
- * for RTS/CTS */
- int alt_retry_rate; /* retry rate for the last retries, given as the
- * hw specific value for the rate (from
- * struct ieee80211_rate). To be used to limit
- * packet dropping when probing higher rates, if hw
- * supports multiple retry rates. -1 = not used */
+ u16 aid; /* Station AID */
int type; /* internal */
- int ifindex; /* internal */
};
@@ -352,6 +334,9 @@ struct ieee80211_tx_control {
* the frame.
* @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on
* the frame.
+ * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field)
+ * is valid. This is useful in monitor mode and necessary for beacon frames
+ * to enable IBSS merging.
*/
enum mac80211_rx_flags {
RX_FLAG_MMIC_ERROR = 1<<0,
@@ -361,6 +346,7 @@ enum mac80211_rx_flags {
RX_FLAG_IV_STRIPPED = 1<<4,
RX_FLAG_FAILED_FCS_CRC = 1<<5,
RX_FLAG_FAILED_PLCP_CRC = 1<<6,
+ RX_FLAG_TSFT = 1<<7,
};
/**
@@ -369,27 +355,26 @@ enum mac80211_rx_flags {
* The low-level driver should provide this information (the subset
* supported by hardware) to the 802.11 code with each received
* frame.
- * @mactime: MAC timestamp as defined by 802.11
+ * @mactime: value in microseconds of the 64-bit Time Synchronization Function
+ * (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
+ * @band: the active band when this frame was received
* @freq: frequency the radio was tuned to when receiving this frame, in MHz
- * @channel: channel the radio was tuned to
- * @phymode: active PHY mode
* @ssi: signal strength when receiving this frame
* @signal: used as 'qual' in statistics reporting
* @noise: PHY noise when receiving this frame
* @antenna: antenna used
- * @rate: data rate
+ * @rate_idx: index of data rate into band's supported rates
* @flag: %RX_FLAG_*
*/
struct ieee80211_rx_status {
u64 mactime;
+ enum ieee80211_band band;
int freq;
- int channel;
- enum ieee80211_phymode phymode;
int ssi;
int signal;
int noise;
int antenna;
- int rate;
+ int rate_idx;
int flag;
};
@@ -400,12 +385,14 @@ struct ieee80211_rx_status {
*
* @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted
* because the destination STA was in powersave mode.
- *
* @IEEE80211_TX_STATUS_ACK: Frame was acknowledged
+ * @IEEE80211_TX_STATUS_AMPDU: The frame was aggregated, so status
+ * is for the whole aggregation.
*/
enum ieee80211_tx_status_flags {
IEEE80211_TX_STATUS_TX_FILTERED = 1<<0,
IEEE80211_TX_STATUS_ACK = 1<<1,
+ IEEE80211_TX_STATUS_AMPDU = 1<<2,
};
/**
@@ -416,24 +403,25 @@ enum ieee80211_tx_status_flags {
*
* @control: a copy of the &struct ieee80211_tx_control passed to the driver
* in the tx() callback.
- *
* @flags: transmit status flags, defined above
- *
- * @ack_signal: signal strength of the ACK frame
- *
+ * @retry_count: number of retries
* @excessive_retries: set to 1 if the frame was retried many times
* but not acknowledged
- *
- * @retry_count: number of retries
- *
+ * @ampdu_ack_len: number of aggregated frames.
+ * relevant only if IEEE80211_TX_STATUS_AMPDU was set.
+ * @ampdu_ack_map: block ack bit map for the aggregation.
+ * relevant only if IEEE80211_TX_STATUS_AMPDU was set.
+ * @ack_signal: signal strength of the ACK frame
* @queue_length: ?? REMOVE
* @queue_number: ?? REMOVE
*/
struct ieee80211_tx_status {
struct ieee80211_tx_control control;
u8 flags;
- bool excessive_retries;
u8 retry_count;
+ bool excessive_retries;
+ u8 ampdu_ack_len;
+ u64 ampdu_ack_map;
int ack_signal;
int queue_length;
int queue_number;
@@ -461,41 +449,29 @@ enum ieee80211_conf_flags {
*
* @radio_enabled: when zero, driver is required to switch off the radio.
* TODO make a flag
- * @channel: IEEE 802.11 channel number
- * @freq: frequency in MHz
- * @channel_val: hardware specific channel value for the channel
- * @phymode: PHY mode to activate (REMOVE)
- * @chan: channel to switch to, pointer to the channel information
- * @mode: pointer to mode definition
- * @regulatory_domain: ??
* @beacon_int: beacon interval (TODO make interface config)
* @flags: configuration flags defined above
- * @power_level: transmit power limit for current regulatory domain in dBm
- * @antenna_max: maximum antenna gain
+ * @power_level: requested transmit power (in dBm)
+ * @max_antenna_gain: maximum antenna gain (in dBi)
* @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
* 1/2: antenna 0/1
* @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
* @ht_conf: describes current self configuration of 802.11n HT capabilies
* @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters
+ * @channel: the channel to tune to
*/
struct ieee80211_conf {
- int channel; /* IEEE 802.11 channel number */
- int freq; /* MHz */
- int channel_val; /* hw specific value for the channel */
-
- enum ieee80211_phymode phymode;
- struct ieee80211_channel *chan;
- struct ieee80211_hw_mode *mode;
- unsigned int regulatory_domain;
int radio_enabled;
int beacon_int;
u32 flags;
- u8 power_level;
- u8 antenna_max;
+ int power_level;
+ int max_antenna_gain;
u8 antenna_sel_tx;
u8 antenna_sel_rx;
+ struct ieee80211_channel *channel;
+
struct ieee80211_ht_info ht_conf;
struct ieee80211_ht_bss_info ht_bss_conf;
};
@@ -514,25 +490,49 @@ struct ieee80211_conf {
* @IEEE80211_IF_TYPE_WDS: interface in WDS mode.
* @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers
* will never see this type.
+ * @IEEE80211_IF_TYPE_MESH_POINT: 802.11s mesh point
*/
enum ieee80211_if_types {
IEEE80211_IF_TYPE_INVALID,
IEEE80211_IF_TYPE_AP,
IEEE80211_IF_TYPE_STA,
IEEE80211_IF_TYPE_IBSS,
+ IEEE80211_IF_TYPE_MESH_POINT,
IEEE80211_IF_TYPE_MNTR,
IEEE80211_IF_TYPE_WDS,
IEEE80211_IF_TYPE_VLAN,
};
/**
+ * struct ieee80211_vif - per-interface data
+ *
+ * Data in this structure is continually present for driver
+ * use during the life of a virtual interface.
+ *
+ * @type: type of this virtual interface
+ * @drv_priv: data area for driver use, will always be aligned to
+ * sizeof(void *).
+ */
+struct ieee80211_vif {
+ enum ieee80211_if_types type;
+ /* must be last */
+ u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
+};
+
+static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
+{
+#ifdef CONFIG_MAC80211_MESH
+ return vif->type == IEEE80211_IF_TYPE_MESH_POINT;
+#endif
+ return false;
+}
+
+/**
* struct ieee80211_if_init_conf - initial configuration of an interface
*
- * @if_id: internal interface ID. This number has no particular meaning to
- * drivers and the only allowed usage is to pass it to
- * ieee80211_beacon_get() and ieee80211_get_buffered_bc() functions.
- * This field is not valid for monitor interfaces
- * (interfaces of %IEEE80211_IF_TYPE_MNTR type).
+ * @vif: pointer to a driver-use per-interface structure. The pointer
+ * itself is also used for various functions including
+ * ieee80211_beacon_get() and ieee80211_get_buffered_bc().
* @type: one of &enum ieee80211_if_types constants. Determines the type of
* added/removed interface.
* @mac_addr: pointer to MAC address of the interface. This pointer is valid
@@ -549,8 +549,8 @@ enum ieee80211_if_types {
* in pure monitor mode.
*/
struct ieee80211_if_init_conf {
- int if_id;
enum ieee80211_if_types type;
+ struct ieee80211_vif *vif;
void *mac_addr;
};
@@ -597,6 +597,15 @@ enum ieee80211_key_alg {
ALG_CCMP,
};
+/**
+ * enum ieee80211_key_len - key length
+ * @WEP40: WEP 5 byte long key
+ * @WEP104: WEP 13 byte long key
+ */
+enum ieee80211_key_len {
+ LEN_WEP40 = 5,
+ LEN_WEP104 = 13,
+};
/**
* enum ieee80211_key_flags - key flags
@@ -643,9 +652,6 @@ struct ieee80211_key_conf {
u8 key[0];
};
-#define IEEE80211_SEQ_COUNTER_RX 0
-#define IEEE80211_SEQ_COUNTER_TX 1
-
/**
* enum set_key_cmd - key command
*
@@ -673,6 +679,21 @@ enum sta_notify_cmd {
};
/**
+ * enum ieee80211_tkip_key_type - get tkip key
+ *
+ * Used by drivers which need to get a tkip key for skb. Some drivers need a
+ * phase 1 key, others need a phase 2 key. A single function allows the driver
+ * to get the key, this enum indicates what type of key is required.
+ *
+ * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key
+ * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key
+ */
+enum ieee80211_tkip_key_type {
+ IEEE80211_TKIP_P1_KEY,
+ IEEE80211_TKIP_P2_KEY,
+};
+
+/**
* enum ieee80211_hw_flags - hardware flags
*
* These flags are used to indicate hardware capabilities to
@@ -705,15 +726,19 @@ enum sta_notify_cmd {
* %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because
* otherwise the stack will not know when the DTIM beacon was sent.
*
- * @IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED:
- * Channels are already configured to the default regulatory domain
- * specified in the device's EEPROM
+ * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE:
+ * Hardware is not capable of short slot operation on the 2.4 GHz band.
+ *
+ * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE:
+ * Hardware is not capable of receiving frames with short preamble on
+ * the 2.4 GHz band.
*/
enum ieee80211_hw_flags {
IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0,
IEEE80211_HW_RX_INCLUDES_FCS = 1<<1,
IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2,
- IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED = 1<<3,
+ IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3,
+ IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4,
};
/**
@@ -725,7 +750,8 @@ enum ieee80211_hw_flags {
* @wiphy: This points to the &struct wiphy allocated for this
* 802.11 PHY. You must fill in the @perm_addr and @dev
* members of this structure using SET_IEEE80211_DEV()
- * and SET_IEEE80211_PERM_ADDR().
+ * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported
+ * bands (with channels, bitrates) are registered here.
*
* @conf: &struct ieee80211_conf, device configuration, don't use.
*
@@ -756,6 +782,9 @@ enum ieee80211_hw_flags {
* @rate_control_algorithm: rate control algorithm for this hardware.
* If unset (NULL), the default algorithm will be used. Must be
* set before calling ieee80211_register_hw().
+ *
+ * @vif_data_size: size (in bytes) of the drv_priv data area
+ * within &struct ieee80211_vif.
*/
struct ieee80211_hw {
struct ieee80211_conf conf;
@@ -766,6 +795,7 @@ struct ieee80211_hw {
u32 flags;
unsigned int extra_tx_headroom;
int channel_change_time;
+ int vif_data_size;
u8 queues;
s8 max_rssi;
s8 max_signal;
@@ -832,6 +862,16 @@ static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
* parameter is guaranteed to be valid until another call to set_key()
* removes it, but it can only be used as a cookie to differentiate
* keys.
+ *
+ * In TKIP some HW need to be provided a phase 1 key, for RX decryption
+ * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key
+ * handler.
+ * The update_tkip_key() call updates the driver with the new phase 1 key.
+ * This happens everytime the iv16 wraps around (every 65536 packets). The
+ * set_key() call will happen only once for each key (unless the AP did
+ * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is
+ * provided by udpate_tkip_key only. The trigger that makes mac80211 call this
+ * handler is software decryption with wrap around of iv16.
*/
/**
@@ -857,8 +897,18 @@ static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
* parameter to see whether multicast frames should be accepted
* or dropped.
*
- * All unsupported flags in @total_flags must be cleared, i.e. you
- * should clear all bits except those you honoured.
+ * All unsupported flags in @total_flags must be cleared.
+ * Hardware does not support a flag if it is incapable of _passing_
+ * the frame to the stack. Otherwise the driver must ignore
+ * the flag, but not clear it.
+ * You must _only_ clear the flag (announce no support for the
+ * flag to mac80211) if you are not able to pass the packet type
+ * to the stack (so the hardware always filters it).
+ * So for example, you should clear @FIF_CONTROL, if your hardware
+ * always filters control frames. If your hardware always passes
+ * control frames to the kernel and is incapable of filtering them,
+ * you do _not_ clear the @FIF_CONTROL flag.
+ * This rule applies to all other FIF flags as well.
*/
/**
@@ -905,19 +955,22 @@ enum ieee80211_filter_flags {
};
/**
- * enum ieee80211_erp_change_flags - erp change flags
- *
- * These flags are used with the erp_ie_changed() callback in
- * &struct ieee80211_ops to indicate which parameter(s) changed.
- * @IEEE80211_ERP_CHANGE_PROTECTION: protection changed
- * @IEEE80211_ERP_CHANGE_PREAMBLE: barker preamble mode changed
+ * enum ieee80211_ampdu_mlme_action - A-MPDU actions
+ *
+ * These flags are used with the ampdu_action() callback in
+ * &struct ieee80211_ops to indicate which action is needed.
+ * @IEEE80211_AMPDU_RX_START: start Rx aggregation
+ * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation
+ * @IEEE80211_AMPDU_TX_START: start Tx aggregation
+ * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation
*/
-enum ieee80211_erp_change_flags {
- IEEE80211_ERP_CHANGE_PROTECTION = 1<<0,
- IEEE80211_ERP_CHANGE_PREAMBLE = 1<<1,
+enum ieee80211_ampdu_mlme_action {
+ IEEE80211_AMPDU_RX_START,
+ IEEE80211_AMPDU_RX_STOP,
+ IEEE80211_AMPDU_TX_START,
+ IEEE80211_AMPDU_TX_STOP,
};
-
/**
* struct ieee80211_ops - callbacks from mac80211 to the driver
*
@@ -973,6 +1026,13 @@ enum ieee80211_erp_change_flags {
* @config_interface: Handler for configuration requests related to interfaces
* (e.g. BSSID changes.)
*
+ * @bss_info_changed: Handler for configuration requests related to BSS
+ * parameters that may vary during BSS's lifespan, and may affect low
+ * level driver (e.g. assoc/disassoc status, erp parameters).
+ * This function should not be used if no BSS has been set, unless
+ * for association indication. The @changed parameter indicates which
+ * of the bss parameters has changed when a call is made.
+ *
* @configure_filter: Configure the device's RX filter.
* See the section "Frame filtering" for more information.
* This callback must be implemented and atomic.
@@ -987,14 +1047,20 @@ enum ieee80211_erp_change_flags {
* and remove_interface calls, i.e. while the interface with the
* given local_address is enabled.
*
+ * @update_tkip_key: See the section "Hardware crypto acceleration"
+ * This callback will be called in the context of Rx. Called for drivers
+ * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY.
+ *
* @hw_scan: Ask the hardware to service the scan request, no need to start
- * the scan state machine in stack.
+ * the scan state machine in stack. The scan must honour the channel
+ * configuration done by the regulatory agent in the wiphy's registered
+ * bands.
*
* @get_stats: return low-level statistics
*
- * @get_sequence_counter: For devices that have internal sequence counters this
- * callback allows mac80211 to access the current value of a counter.
- * This callback seems not well-defined, tell us if you need it.
+ * @get_tkip_seq: If your device implements TKIP encryption in hardware this
+ * callback should be provided to read the TKIP transmit IVs (both IV32
+ * and IV16) for the given key from hardware.
*
* @set_rts_threshold: Configuration of RTS threshold (if device needs it)
*
@@ -1007,8 +1073,6 @@ enum ieee80211_erp_change_flags {
* @sta_notify: Notifies low level driver about addition or removal
* of assocaited station or AP.
*
- * @erp_ie_changed: Handle ERP IE change notifications. Must be atomic.
- *
* @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
* bursting) for a hardware TX queue. The @queue parameter uses the
* %IEEE80211_TX_QUEUE_* constants. Must be atomic.
@@ -1045,6 +1109,13 @@ enum ieee80211_erp_change_flags {
* used to determine whether to reply to Probe Requests.
*
* @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic.
+ *
+ * @ampdu_action: Perform a certain A-MPDU action
+ * The RA/TID combination determines the destination and TID we want
+ * the ampdu action to be performed for. The action is defined through
+ * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn)
+ * is the first frame we expect to perform the action on. notice
+ * that TX/RX_STOP can pass NULL for this parameter.
*/
struct ieee80211_ops {
int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb,
@@ -1057,7 +1128,12 @@ struct ieee80211_ops {
struct ieee80211_if_init_conf *conf);
int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
int (*config_interface)(struct ieee80211_hw *hw,
- int if_id, struct ieee80211_if_conf *conf);
+ struct ieee80211_vif *vif,
+ struct ieee80211_if_conf *conf);
+ void (*bss_info_changed)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info,
+ u32 changed);
void (*configure_filter)(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
@@ -1066,20 +1142,20 @@ struct ieee80211_ops {
int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
const u8 *local_address, const u8 *address,
struct ieee80211_key_conf *key);
+ void (*update_tkip_key)(struct ieee80211_hw *hw,
+ struct ieee80211_key_conf *conf, const u8 *address,
+ u32 iv32, u16 *phase1key);
int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
int (*get_stats)(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats);
- int (*get_sequence_counter)(struct ieee80211_hw *hw,
- u8* addr, u8 keyidx, u8 txrx,
- u32* iv32, u16* iv16);
+ void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
+ u32 *iv32, u16 *iv16);
int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
int (*set_retry_limit)(struct ieee80211_hw *hw,
u32 short_retry, u32 long_retr);
- void (*sta_notify)(struct ieee80211_hw *hw, int if_id,
+ void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum sta_notify_cmd, const u8 *addr);
- void (*erp_ie_changed)(struct ieee80211_hw *hw, u8 changes,
- int cts_protection, int preamble);
int (*conf_tx)(struct ieee80211_hw *hw, int queue,
const struct ieee80211_tx_queue_params *params);
int (*get_tx_stats)(struct ieee80211_hw *hw,
@@ -1090,7 +1166,9 @@ struct ieee80211_ops {
struct sk_buff *skb,
struct ieee80211_tx_control *control);
int (*tx_last_beacon)(struct ieee80211_hw *hw);
- int (*conf_ht)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
+ int (*ampdu_action)(struct ieee80211_hw *hw,
+ enum ieee80211_ampdu_mlme_action action,
+ const u8 *addr, u16 tid, u16 *ssn);
};
/**
@@ -1111,8 +1189,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
/**
* ieee80211_register_hw - Register hardware device
*
- * You must call this function before any other functions
- * except ieee80211_register_hwmode.
+ * You must call this function before any other functions in
+ * mac80211. Note that before a hardware can be registered, you
+ * need to fill the contained wiphy's information.
*
* @hw: the device to register as returned by ieee80211_alloc_hw()
*/
@@ -1122,6 +1201,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw);
extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw);
+extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw);
#endif
/**
* ieee80211_get_tx_led_name - get name of TX LED
@@ -1161,6 +1241,16 @@ static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
#endif
}
+/**
+ * ieee80211_get_assoc_led_name - get name of association LED
+ *
+ * mac80211 creates a association LED trigger for each wireless hardware
+ * that can be used to drive LEDs if your driver registers a LED device.
+ * This function returns the name (or %NULL if not configured for LEDs)
+ * of the trigger so you can automatically link the LED device.
+ *
+ * @hw: the hardware to get the LED trigger name for
+ */
static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_LEDS
@@ -1170,10 +1260,24 @@ static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
#endif
}
-
-/* Register a new hardware PHYMODE capability to the stack. */
-int ieee80211_register_hwmode(struct ieee80211_hw *hw,
- struct ieee80211_hw_mode *mode);
+/**
+ * ieee80211_get_radio_led_name - get name of radio LED
+ *
+ * mac80211 creates a radio change LED trigger for each wireless hardware
+ * that can be used to drive LEDs if your driver registers a LED device.
+ * This function returns the name (or %NULL if not configured for LEDs)
+ * of the trigger so you can automatically link the LED device.
+ *
+ * @hw: the hardware to get the LED trigger name for
+ */
+static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+{
+#ifdef CONFIG_MAC80211_LEDS
+ return __ieee80211_get_radio_led_name(hw);
+#else
+ return NULL;
+#endif
+}
/**
* ieee80211_unregister_hw - Unregister a hardware device
@@ -1207,7 +1311,10 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
* buffer in @skb must start with an IEEE 802.11 header or a radiotap
* header if %RX_FLAG_RADIOTAP is set in the @status flags.
*
- * This function may not be called in IRQ context.
+ * This function may not be called in IRQ context. Calls to this function
+ * for a single hardware must be synchronized against each other. Calls
+ * to this function and ieee80211_rx_irqsafe() may not be mixed for a
+ * single hardware.
*
* @hw: the hardware this frame came in on
* @skb: the buffer to receive, owned by mac80211 after this call
@@ -1224,7 +1331,10 @@ static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
* ieee80211_rx_irqsafe - receive frame
*
* Like ieee80211_rx() but can be called in IRQ context
- * (internally defers to a workqueue.)
+ * (internally defers to a tasklet.)
+ *
+ * Calls to this function and ieee80211_rx() may not be mixed for a
+ * single hardware.
*
* @hw: the hardware this frame came in on
* @skb: the buffer to receive, owned by mac80211 after this call
@@ -1243,6 +1353,11 @@ void ieee80211_rx_irqsafe(struct ieee80211_hw *hw,
* transmitted. It is permissible to not call this function for
* multicast frames but this can affect statistics.
*
+ * This function may not be called in IRQ context. Calls to this function
+ * for a single hardware must be synchronized against each other. Calls
+ * to this function and ieee80211_tx_status_irqsafe() may not be mixed
+ * for a single hardware.
+ *
* @hw: the hardware the frame was transmitted by
* @skb: the frame that was transmitted, owned by mac80211 after this call
* @status: status information for this frame; the status pointer need not
@@ -1252,6 +1367,22 @@ void ieee80211_rx_irqsafe(struct ieee80211_hw *hw,
void ieee80211_tx_status(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_tx_status *status);
+
+/**
+ * ieee80211_tx_status_irqsafe - irq-safe transmit status callback
+ *
+ * Like ieee80211_tx_status() but can be called in IRQ context
+ * (internally defers to a tasklet.)
+ *
+ * Calls to this function and ieee80211_tx_status() may not be mixed for a
+ * single hardware.
+ *
+ * @hw: the hardware the frame was transmitted by
+ * @skb: the frame that was transmitted, owned by mac80211 after this call
+ * @status: status information for this frame; the status pointer need not
+ * be valid after this function returns and is not freed by mac80211,
+ * it is recommended that it points to a stack area
+ */
void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_tx_status *status);
@@ -1259,7 +1390,7 @@ void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
/**
* ieee80211_beacon_get - beacon generation function
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @control: will be filled with information needed to send this beacon.
*
* If the beacon frames are generated by the host system (i.e., not in
@@ -1270,13 +1401,13 @@ void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
* is responsible of freeing it.
*/
struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
- int if_id,
+ struct ieee80211_vif *vif,
struct ieee80211_tx_control *control);
/**
* ieee80211_rts_get - RTS frame generation function
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @frame: pointer to the frame that is going to be protected by the RTS.
* @frame_len: the frame length (in octets).
* @frame_txctl: &struct ieee80211_tx_control of the frame.
@@ -1287,7 +1418,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
* the next RTS frame from the 802.11 code. The low-level is responsible
* for calling this function before and RTS frame is needed.
*/
-void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
+void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl,
struct ieee80211_rts *rts);
@@ -1295,7 +1426,7 @@ void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
/**
* ieee80211_rts_duration - Get the duration field for an RTS frame
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @frame_len: the length of the frame that is going to be protected by the RTS.
* @frame_txctl: &struct ieee80211_tx_control of the frame.
*
@@ -1303,14 +1434,14 @@ void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
* the duration field, the low-level driver uses this function to receive
* the duration field value in little-endian byteorder.
*/
-__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, int if_id,
- size_t frame_len,
+__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl);
/**
* ieee80211_ctstoself_get - CTS-to-self frame generation function
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @frame: pointer to the frame that is going to be protected by the CTS-to-self.
* @frame_len: the frame length (in octets).
* @frame_txctl: &struct ieee80211_tx_control of the frame.
@@ -1321,7 +1452,8 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, int if_id,
* the next CTS-to-self frame from the 802.11 code. The low-level is responsible
* for calling this function before and CTS-to-self frame is needed.
*/
-void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
+void ieee80211_ctstoself_get(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl,
struct ieee80211_cts *cts);
@@ -1329,7 +1461,7 @@ void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
/**
* ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @frame_len: the length of the frame that is going to be protected by the CTS-to-self.
* @frame_txctl: &struct ieee80211_tx_control of the frame.
*
@@ -1337,28 +1469,30 @@ void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
* the duration field, the low-level driver uses this function to receive
* the duration field value in little-endian byteorder.
*/
-__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, int if_id,
+__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
size_t frame_len,
const struct ieee80211_tx_control *frame_txctl);
/**
* ieee80211_generic_frame_duration - Calculate the duration field for a frame
* @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @frame_len: the length of the frame.
- * @rate: the rate (in 100kbps) at which the frame is going to be transmitted.
+ * @rate: the rate at which the frame is going to be transmitted.
*
* Calculate the duration field of some generic frame, given its
* length and transmission rate (in 100kbps).
*/
-__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int if_id,
+__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
size_t frame_len,
- int rate);
+ struct ieee80211_rate *rate);
/**
* ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
* @hw: pointer as obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
+ * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
* @control: will be filled with information needed to send returned frame.
*
* Function for accessing buffered broadcast and multicast frames. If
@@ -1377,7 +1511,7 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int if_id,
* use common code for all beacons.
*/
struct sk_buff *
-ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
+ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_tx_control *control);
/**
@@ -1403,6 +1537,21 @@ int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
int ieee80211_get_hdrlen(u16 fc);
/**
+ * ieee80211_get_tkip_key - get a TKIP rc4 for skb
+ *
+ * This function computes a TKIP rc4 key for an skb. It computes
+ * a phase 1 key if needed (iv16 wraps around). This function is to
+ * be used by drivers which can do HW encryption but need to compute
+ * to phase 1/2 key in SW.
+ *
+ * @keyconf: the parameter passed with the set key
+ * @skb: the skb for which the key is needed
+ * @rc4key: a buffer to which the key will be written
+ */
+void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf,
+ struct sk_buff *skb,
+ enum ieee80211_tkip_key_type type, u8 *key);
+/**
* ieee80211_wake_queue - wake specific queue
* @hw: pointer as obtained from ieee80211_alloc_hw().
* @queue: queue number (counted from zero).
@@ -1456,18 +1605,127 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw);
void ieee80211_scan_completed(struct ieee80211_hw *hw);
/**
- * ieee80211_iterate_active_interfaces - iterate active interfaces
+ * ieee80211_iterate_active_interfaces- iterate active interfaces
*
* This function iterates over the interfaces associated with a given
* hardware that are currently active and calls the callback for them.
+ * This function allows the iterator function to sleep, when the iterator
+ * function is atomic @ieee80211_iterate_active_interfaces_atomic can
+ * be used.
*
* @hw: the hardware struct of which the interfaces should be iterated over
- * @iterator: the iterator function to call, cannot sleep
+ * @iterator: the iterator function to call
* @data: first argument of the iterator function
*/
void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
void (*iterator)(void *data, u8 *mac,
- int if_id),
+ struct ieee80211_vif *vif),
void *data);
+/**
+ * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces
+ *
+ * This function iterates over the interfaces associated with a given
+ * hardware that are currently active and calls the callback for them.
+ * This function requires the iterator callback function to be atomic,
+ * if that is not desired, use @ieee80211_iterate_active_interfaces instead.
+ *
+ * @hw: the hardware struct of which the interfaces should be iterated over
+ * @iterator: the iterator function to call, cannot sleep
+ * @data: first argument of the iterator function
+ */
+void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw,
+ void (*iterator)(void *data,
+ u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data);
+
+/**
+ * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient
+ * @tid: the TID to BA on.
+ * @return: success if addBA request was sent, failure otherwise
+ *
+ * Although mac80211/low level driver/user space application can estimate
+ * the need to start aggregation on a certain RA/TID, the session level
+ * will be managed by the mac80211.
+ */
+int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid);
+
+/**
+ * ieee80211_start_tx_ba_cb - low level driver ready to aggregate.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient.
+ * @tid: the TID to BA on.
+ *
+ * This function must be called by low level driver once it has
+ * finished with preparations for the BA session.
+ */
+void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid);
+
+/**
+ * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient.
+ * @tid: the TID to BA on.
+ *
+ * This function must be called by low level driver once it has
+ * finished with preparations for the BA session.
+ * This version of the function is irq safe.
+ */
+void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra,
+ u16 tid);
+
+/**
+ * ieee80211_stop_tx_ba_session - Stop a Block Ack session.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient
+ * @tid: the TID to stop BA.
+ * @initiator: if indicates initiator DELBA frame will be sent.
+ * @return: error if no sta with matching da found, success otherwise
+ *
+ * Although mac80211/low level driver/user space application can estimate
+ * the need to stop aggregation on a certain RA/TID, the session level
+ * will be managed by the mac80211.
+ */
+int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
+ u8 *ra, u16 tid,
+ enum ieee80211_back_parties initiator);
+
+/**
+ * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient.
+ * @tid: the desired TID to BA on.
+ *
+ * This function must be called by low level driver once it has
+ * finished with preparations for the BA session tear down.
+ */
+void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid);
+
+/**
+ * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate.
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @ra: receiver address of the BA session recipient.
+ * @tid: the desired TID to BA on.
+ *
+ * This function must be called by low level driver once it has
+ * finished with preparations for the BA session tear down.
+ * This version of the function is irq safe.
+ */
+void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra,
+ u16 tid);
+
+/**
+ * ieee80211_notify_mac - low level driver notification
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @notification_types: enum ieee80211_notification_types
+ *
+ * This function must be called by low level driver to inform mac80211 of
+ * low level driver status change or force mac80211 to re-assoc for low
+ * level driver internal error that require re-assoc.
+ */
+void ieee80211_notify_mac(struct ieee80211_hw *hw,
+ enum ieee80211_notification_types notif_type);
#endif /* MAC80211_H */
diff --git a/include/net/mac80211_compat.h b/include/net/mac80211_compat.h
index 6231b27..e69de29 100644
--- a/include/net/mac80211_compat.h
+++ b/include/net/mac80211_compat.h
@@ -1,33 +0,0 @@
-#ifndef __MAC80211_COMPAT_H__
-#define __MAC80211_COMPAT_H__
-
-#define BIT(nr) (1UL << (nr))
-
-/*
- * We tag multicasts with these structures.
- */
-
-#define dev_addr_list dev_mc_list
-#define da_addr dmi_addr
-#define da_addrlen dmi_addrlen
-#define da_users dmi_users
-#define da_gusers dmi_gusers
-
-extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
-extern int dev_mc_sync(struct net_device *to, struct net_device *from);
-
-extern void __dev_set_rx_mode(struct net_device *dev);
-
-#ifndef __maybe_unused
-#define __maybe_unused
-#endif
-
-#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
-extern char *print_mac(char *buf, const u8 *addr);
-#define DECLARE_MAC_BUF(var) char var[18] __maybe_unused
-
-#ifndef uninitialized_var
-#define uninitialized_var(x) x = x
-#endif
-
-#endif /* __MAC80211_COMPAT_H__ */
diff --git a/include/net/wireless.h b/include/net/wireless.h
index 1faab23..d05482f 100644
--- a/include/net/wireless.h
+++ b/include/net/wireless.h
@@ -13,6 +13,162 @@
#include <net/cfg80211.h>
/**
+ * enum ieee80211_band - supported frequency bands
+ *
+ * The bands are assigned this way because the supported
+ * bitrates differ in these bands.
+ *
+ * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band
+ * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7)
+ */
+enum ieee80211_band {
+ IEEE80211_BAND_2GHZ,
+ IEEE80211_BAND_5GHZ,
+
+ /* keep last */
+ IEEE80211_NUM_BANDS
+};
+
+/**
+ * enum ieee80211_channel_flags - channel flags
+ *
+ * Channel flags set by the regulatory control code.
+ *
+ * @IEEE80211_CHAN_DISABLED: This channel is disabled.
+ * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted
+ * on this channel.
+ * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel.
+ * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel.
+ */
+enum ieee80211_channel_flags {
+ IEEE80211_CHAN_DISABLED = 1<<0,
+ IEEE80211_CHAN_PASSIVE_SCAN = 1<<1,
+ IEEE80211_CHAN_NO_IBSS = 1<<2,
+ IEEE80211_CHAN_RADAR = 1<<3,
+};
+
+/**
+ * struct ieee80211_channel - channel definition
+ *
+ * This structure describes a single channel for use
+ * with cfg80211.
+ *
+ * @center_freq: center frequency in MHz
+ * @hw_value: hardware-specific value for the channel
+ * @flags: channel flags from &enum ieee80211_channel_flags.
+ * @orig_flags: channel flags at registration time, used by regulatory
+ * code to support devices with additional restrictions
+ * @band: band this channel belongs to.
+ * @max_antenna_gain: maximum antenna gain in dBi
+ * @max_power: maximum transmission power (in dBm)
+ * @orig_mag: internal use
+ * @orig_mpwr: internal use
+ */
+struct ieee80211_channel {
+ enum ieee80211_band band;
+ u16 center_freq;
+ u16 hw_value;
+ u32 flags;
+ int max_antenna_gain;
+ int max_power;
+ u32 orig_flags;
+ int orig_mag, orig_mpwr;
+};
+
+/**
+ * enum ieee80211_rate_flags - rate flags
+ *
+ * Hardware/specification flags for rates. These are structured
+ * in a way that allows using the same bitrate structure for
+ * different bands/PHY modes.
+ *
+ * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short
+ * preamble on this bitrate; only relevant in 2.4GHz band and
+ * with CCK rates.
+ * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate
+ * when used with 802.11a (on the 5 GHz band); filled by the
+ * core code when registering the wiphy.
+ * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate
+ * when used with 802.11b (on the 2.4 GHz band); filled by the
+ * core code when registering the wiphy.
+ * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate
+ * when used with 802.11g (on the 2.4 GHz band); filled by the
+ * core code when registering the wiphy.
+ * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode.
+ */
+enum ieee80211_rate_flags {
+ IEEE80211_RATE_SHORT_PREAMBLE = 1<<0,
+ IEEE80211_RATE_MANDATORY_A = 1<<1,
+ IEEE80211_RATE_MANDATORY_B = 1<<2,
+ IEEE80211_RATE_MANDATORY_G = 1<<3,
+ IEEE80211_RATE_ERP_G = 1<<4,
+};
+
+/**
+ * struct ieee80211_rate - bitrate definition
+ *
+ * This structure describes a bitrate that an 802.11 PHY can
+ * operate with. The two values @hw_value and @hw_value_short
+ * are only for driver use when pointers to this structure are
+ * passed around.
+ *
+ * @flags: rate-specific flags
+ * @bitrate: bitrate in units of 100 Kbps
+ * @hw_value: driver/hardware value for this rate
+ * @hw_value_short: driver/hardware value for this rate when
+ * short preamble is used
+ */
+struct ieee80211_rate {
+ u32 flags;
+ u16 bitrate;
+ u16 hw_value, hw_value_short;
+};
+
+/**
+ * struct ieee80211_ht_info - describing STA's HT capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11n HT capabilities for an STA.
+ *
+ * @ht_supported: is HT supported by STA, 0: no, 1: yes
+ * @cap: HT capabilities map as described in 802.11n spec
+ * @ampdu_factor: Maximum A-MPDU length factor
+ * @ampdu_density: Minimum A-MPDU spacing
+ * @supp_mcs_set: Supported MCS set as described in 802.11n spec
+ */
+struct ieee80211_ht_info {
+ u16 cap; /* use IEEE80211_HT_CAP_ */
+ u8 ht_supported;
+ u8 ampdu_factor;
+ u8 ampdu_density;
+ u8 supp_mcs_set[16];
+};
+
+/**
+ * struct ieee80211_supported_band - frequency band definition
+ *
+ * This structure describes a frequency band a wiphy
+ * is able to operate in.
+ *
+ * @channels: Array of channels the hardware can operate in
+ * in this band.
+ * @band: the band this structure represents
+ * @n_channels: Number of channels in @channels
+ * @bitrates: Array of bitrates the hardware can operate with
+ * in this band. Must be sorted to give a valid "supported
+ * rates" IE, i.e. CCK rates first, then OFDM.
+ * @n_bitrates: Number of bitrates in @bitrates
+ */
+struct ieee80211_supported_band {
+ struct ieee80211_channel *channels;
+ struct ieee80211_rate *bitrates;
+ enum ieee80211_band band;
+ int n_channels;
+ int n_bitrates;
+ struct ieee80211_ht_info ht_info;
+};
+
+/**
* struct wiphy - wireless hardware description
* @idx: the wiphy index assigned to this item
* @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name>
@@ -30,6 +186,8 @@ struct wiphy {
* help determine whether you own this wiphy or not. */
void *privid;
+ struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];
+
/* fields below are read-only, assigned by cfg80211 */
/* dir in /sys/class/ieee80211/, you need
@@ -136,4 +294,32 @@ extern void wiphy_unregister(struct wiphy *wiphy);
*/
extern void wiphy_free(struct wiphy *wiphy);
+/**
+ * ieee80211_channel_to_frequency - convert channel number to frequency
+ */
+extern int ieee80211_channel_to_frequency(int chan);
+
+/**
+ * ieee80211_frequency_to_channel - convert frequency to channel number
+ */
+extern int ieee80211_frequency_to_channel(int freq);
+
+/*
+ * Name indirection necessary because the ieee80211 code also has
+ * a function named "ieee80211_get_channel", so if you include
+ * cfg80211's header file you get cfg80211's version, if you try
+ * to include both header files you'll (rightfully!) get a symbol
+ * clash.
+ */
+extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
+ int freq);
+
+/**
+ * ieee80211_get_channel - get channel struct from wiphy for specified frequency
+ */
+static inline struct ieee80211_channel *
+ieee80211_get_channel(struct wiphy *wiphy, int freq)
+{
+ return __ieee80211_get_channel(wiphy, freq);
+}
#endif /* __NET_WIRELESS_H */
diff --git a/include/net/wireless_compat.h b/include/net/wireless_compat.h
new file mode 100644
index 0000000..6231b27
--- /dev/null
+++ b/include/net/wireless_compat.h
@@ -0,0 +1,33 @@
+#ifndef __MAC80211_COMPAT_H__
+#define __MAC80211_COMPAT_H__
+
+#define BIT(nr) (1UL << (nr))
+
+/*
+ * We tag multicasts with these structures.
+ */
+
+#define dev_addr_list dev_mc_list
+#define da_addr dmi_addr
+#define da_addrlen dmi_addrlen
+#define da_users dmi_users
+#define da_gusers dmi_gusers
+
+extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
+extern int dev_mc_sync(struct net_device *to, struct net_device *from);
+
+extern void __dev_set_rx_mode(struct net_device *dev);
+
+#ifndef __maybe_unused
+#define __maybe_unused
+#endif
+
+#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
+extern char *print_mac(char *buf, const u8 *addr);
+#define DECLARE_MAC_BUF(var) char var[18] __maybe_unused
+
+#ifndef uninitialized_var
+#define uninitialized_var(x) x = x
+#endif
+
+#endif /* __MAC80211_COMPAT_H__ */
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 6e1893d..5387a32 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -1,7 +1,7 @@
config MAC80211
tristate "Generic IEEE 802.11 Networking Stack (mac80211)"
- depends on EXPERIMENTAL
select CRYPTO
+ select CRYPTO_ECB
select CRYPTO_ARC4
select CRYPTO_AES
select CRC32
@@ -9,27 +9,76 @@ config MAC80211
select CFG80211
select NET_SCHED
---help---
- This option enables the hardware independent IEEE 802.11
- networking stack.
+ This option enables the hardware independent IEEE 802.11
+ networking stack.
-config MAC80211_RCSIMPLE
- bool "'simple' rate control algorithm" if EMBEDDED
- default y
- depends on MAC80211
+menu "Rate control algorithm selection"
+ depends on MAC80211 != n
+
+choice
+ prompt "Default rate control algorithm"
+ default MAC80211_RC_DEFAULT_PID
+ ---help---
+ This option selects the default rate control algorithm
+ mac80211 will use. Note that this default can still be
+ overriden through the ieee80211_default_rc_algo module
+ parameter if different algorithms are available.
+
+config MAC80211_RC_DEFAULT_PID
+ bool "PID controller based rate control algorithm"
+ select MAC80211_RC_PID
+ ---help---
+ Select the PID controller based rate control as the
+ default rate control algorithm. You should choose
+ this unless you know what you are doing.
+
+config MAC80211_RC_DEFAULT_NONE
+ bool "No default algorithm"
+ depends on EMBEDDED
help
- This option allows you to turn off the 'simple' rate
- control algorithm in mac80211. If you do turn it off,
- you absolutely need another rate control algorithm.
+ Selecting this option will select no default algorithm
+ and allow you to not build any. Do not choose this
+ option unless you know your driver comes with another
+ suitable algorithm.
+endchoice
+
+comment "Selecting 'y' for an algorithm will"
+comment "build the algorithm into mac80211."
+
+config MAC80211_RC_DEFAULT
+ string
+ default "pid" if MAC80211_RC_DEFAULT_PID
+ default ""
+
+config MAC80211_RC_PID
+ tristate "PID controller based rate control algorithm"
+ ---help---
+ This option enables a TX rate control algorithm for
+ mac80211 that uses a PID controller to select the TX
+ rate.
+
+ Say Y or M unless you're sure you want to use a
+ different rate control algorithm.
+
+endmenu
+
+config MAC80211_MESH
+ bool "Enable mac80211 mesh networking (pre-802.11s) support"
+ depends on MAC80211 && EXPERIMENTAL
+ ---help---
+ This options enables support of Draft 802.11s mesh networking.
+ The implementation is based on Draft 1.08 of the Mesh Networking
+ amendment. For more information visit http://o11s.org/.
- Say Y unless you know you will have another algorithm
- available.
config MAC80211_LEDS
bool "Enable LED triggers"
- depends on MAC80211 && LEDS_TRIGGERS
+ depends on MAC80211
+ select NEW_LEDS
+ select LEDS_TRIGGERS
---help---
- This option enables a few LED triggers for different
- packet receive/transmit events.
+ This option enables a few LED triggers for different
+ packet receive/transmit events.
config MAC80211_DEBUGFS
bool "Export mac80211 internals in DebugFS"
@@ -40,6 +89,18 @@ config MAC80211_DEBUGFS
Say N unless you know you need this.
+config MAC80211_DEBUG_PACKET_ALIGNMENT
+ bool "Enable packet alignment debugging"
+ depends on MAC80211
+ help
+ This option is recommended for driver authors and strongly
+ discouraged for everybody else, it will trigger a warning
+ when a driver hands mac80211 a buffer that is aligned in
+ a way that will cause problems with the IP stack on some
+ architectures.
+
+ Say N unless you're writing a mac80211 based driver.
+
config MAC80211_DEBUG
bool "Enable debugging output"
depends on MAC80211
@@ -51,14 +112,14 @@ config MAC80211_DEBUG
subsystem, you most likely want to say N here.
config MAC80211_HT_DEBUG
- bool "Enable HT debugging output"
- depends on MAC80211_DEBUG
- ---help---
- This option enables 802.11n High Throughput features
- debug tracing output.
+ bool "Enable HT debugging output"
+ depends on MAC80211_DEBUG
+ ---help---
+ This option enables 802.11n High Throughput features
+ debug tracing output.
- If you are not trying to debug of develop the ieee80211
- subsystem, you most likely want to say N here.
+ If you are not trying to debug of develop the ieee80211
+ subsystem, you most likely want to say N here.
config MAC80211_VERBOSE_DEBUG
bool "Verbose debugging output"
@@ -97,3 +158,10 @@ config MAC80211_VERBOSE_PS_DEBUG
---help---
Say Y here to print out verbose powersave
mode debug messages.
+
+config MAC80211_VERBOSE_MPL_DEBUG
+ bool "Verbose mesh peer link debugging"
+ depends on MAC80211_DEBUG && MAC80211_MESH
+ ---help---
+ Say Y here to print out verbose mesh peer link
+ debug messages.
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index a908fd5..4e5847f 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -1,21 +1,24 @@
-obj-$(CONFIG_MAC80211) += mac80211.o compat.o
+obj-$(CONFIG_MAC80211) += mac80211.o
-mac80211-objs-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o
-mac80211-objs-$(CONFIG_MAC80211_DEBUGFS) += debugfs.o debugfs_sta.o debugfs_netdev.o debugfs_key.o
-mac80211-objs-$(CONFIG_NET_SCHED) += wme.o
-mac80211-objs-$(CONFIG_MAC80211_RCSIMPLE) += rc80211_simple.o
+# objects for PID algorithm
+rc80211_pid-y := rc80211_pid_algo.o
+rc80211_pid-$(CONFIG_MAC80211_DEBUGFS) += rc80211_pid_debugfs.o
-mac80211-objs := \
- ieee80211.o \
- ieee80211_ioctl.o \
+# build helper for PID algorithm
+rc-pid-y := $(rc80211_pid-y)
+rc-pid-m := rc80211_pid.o
+
+# mac80211 objects
+mac80211-y := \
+ main.o \
+ wext.o \
sta_info.o \
wep.o \
wpa.o \
- ieee80211_sta.o \
- ieee80211_iface.o \
- ieee80211_rate.o \
+ mlme.o \
+ iface.o \
+ rate.o \
michael.o \
- regdomain.o \
tkip.o \
aes_ccm.o \
cfg.o \
@@ -23,5 +26,26 @@ mac80211-objs := \
tx.o \
key.o \
util.o \
- event.o \
- $(mac80211-objs-y)
+ event.o
+
+mac80211-$(CONFIG_MAC80211_LEDS) += led.o
+mac80211-$(CONFIG_NET_SCHED) += wme.o
+mac80211-$(CONFIG_MAC80211_DEBUGFS) += \
+ debugfs.o \
+ debugfs_sta.o \
+ debugfs_netdev.o \
+ debugfs_key.o
+
+mac80211-$(CONFIG_MAC80211_MESH) += \
+ mesh.o \
+ mesh_pathtbl.o \
+ mesh_plink.o \
+ mesh_hwmp.o
+
+
+# Build rate control algorithm(s)
+CFLAGS_rc80211_pid_algo.o += -DRC80211_PID_COMPILE
+mac80211-$(CONFIG_MAC80211_RC_PID) += $(rc-pid-$(CONFIG_MAC80211_RC_PID))
+
+# Modular rate algorithms are assigned to mac80211-m - make separate modules
+obj-m += $(mac80211-m)
diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
index 97838b9..b93a17c 100644
--- a/net/mac80211/aes_ccm.c
+++ b/net/mac80211/aes_ccm.c
@@ -14,7 +14,7 @@
#include <asm/scatterlist.h>
#include <net/mac80211.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "aes_ccm.h"
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index f2df857..b6f4eaa 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1,19 +1,23 @@
/*
* mac80211 configuration hooks for cfg80211
*
- * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
*
* This file is GPLv2 as found in COPYING.
*/
+#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#if 0 /* Not in RHEL5 */
#include <net/net_namespace.h>
#endif
+#include <linux/rcupdate.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "cfg.h"
+#include "rate.h"
+#include "mesh.h"
static enum ieee80211_if_types
nl80211_type_to_mac80211_type(enum nl80211_iftype type)
@@ -27,16 +31,26 @@ nl80211_type_to_mac80211_type(enum nl80211_iftype type)
return IEEE80211_IF_TYPE_STA;
case NL80211_IFTYPE_MONITOR:
return IEEE80211_IF_TYPE_MNTR;
+#ifdef CONFIG_MAC80211_MESH
+ case NL80211_IFTYPE_MESH_POINT:
+ return IEEE80211_IF_TYPE_MESH_POINT;
+#endif
+ case NL80211_IFTYPE_WDS:
+ return IEEE80211_IF_TYPE_WDS;
default:
return IEEE80211_IF_TYPE_INVALID;
}
}
static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
- enum nl80211_iftype type)
+ enum nl80211_iftype type, u32 *flags,
+ struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
enum ieee80211_if_types itype;
+ struct net_device *dev;
+ struct ieee80211_sub_if_data *sdata;
+ int err;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
@@ -45,7 +59,13 @@ static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
- return ieee80211_if_add(local->mdev, name, NULL, itype);
+ err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
+ if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
+ return err;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ sdata->u.mntr_flags = *flags;
+ return 0;
}
static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
@@ -72,7 +92,8 @@ static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
}
static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
- enum nl80211_iftype type)
+ enum nl80211_iftype type, u32 *flags,
+ struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
@@ -100,17 +121,862 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_VLAN)
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
return -EOPNOTSUPP;
ieee80211_if_reinit(dev);
ieee80211_if_set_type(dev, itype);
+ if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
+ ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
+ params->mesh_id_len,
+ params->mesh_id);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
+ return 0;
+
+ sdata->u.mntr_flags = *flags;
+ return 0;
+}
+
+static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
+ u8 key_idx, u8 *mac_addr,
+ struct key_params *params)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta = NULL;
+ enum ieee80211_key_alg alg;
+ struct ieee80211_key *key;
+ int err;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ switch (params->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ alg = ALG_WEP;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ alg = ALG_TKIP;
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ alg = ALG_CCMP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
+ if (!key)
+ return -ENOMEM;
+
+ rcu_read_lock();
+
+ if (mac_addr) {
+ sta = sta_info_get(sdata->local, mac_addr);
+ if (!sta) {
+ ieee80211_key_free(key);
+ err = -ENOENT;
+ goto out_unlock;
+ }
+ }
+
+ ieee80211_key_link(key, sdata, sta);
+
+ err = 0;
+ out_unlock:
+ rcu_read_unlock();
+
+ return err;
+}
+
+static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
+ u8 key_idx, u8 *mac_addr)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
+ int ret;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
+
+ if (mac_addr) {
+ ret = -ENOENT;
+
+ sta = sta_info_get(sdata->local, mac_addr);
+ if (!sta)
+ goto out_unlock;
+
+ if (sta->key) {
+ ieee80211_key_free(sta->key);
+ WARN_ON(sta->key);
+ ret = 0;
+ }
+
+ goto out_unlock;
+ }
+
+ if (!sdata->keys[key_idx]) {
+ ret = -ENOENT;
+ goto out_unlock;
+ }
+
+ ieee80211_key_free(sdata->keys[key_idx]);
+ WARN_ON(sdata->keys[key_idx]);
+
+ ret = 0;
+ out_unlock:
+ rcu_read_unlock();
+
+ return ret;
+}
+
+static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
+ u8 key_idx, u8 *mac_addr, void *cookie,
+ void (*callback)(void *cookie,
+ struct key_params *params))
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta = NULL;
+ u8 seq[6] = {0};
+ struct key_params params;
+ struct ieee80211_key *key;
+ u32 iv32;
+ u16 iv16;
+ int err = -ENOENT;
+
+ rcu_read_lock();
+
+ if (mac_addr) {
+ sta = sta_info_get(sdata->local, mac_addr);
+ if (!sta)
+ goto out;
+
+ key = sta->key;
+ } else
+ key = sdata->keys[key_idx];
+
+ if (!key)
+ goto out;
+
+ memset(¶ms, 0, sizeof(params));
+
+ switch (key->conf.alg) {
+ case ALG_TKIP:
+ params.cipher = WLAN_CIPHER_SUITE_TKIP;
+
+ iv32 = key->u.tkip.iv32;
+ iv16 = key->u.tkip.iv16;
+
+ if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
+ sdata->local->ops->get_tkip_seq)
+ sdata->local->ops->get_tkip_seq(
+ local_to_hw(sdata->local),
+ key->conf.hw_key_idx,
+ &iv32, &iv16);
+
+ seq[0] = iv16 & 0xff;
+ seq[1] = (iv16 >> 8) & 0xff;
+ seq[2] = iv32 & 0xff;
+ seq[3] = (iv32 >> 8) & 0xff;
+ seq[4] = (iv32 >> 16) & 0xff;
+ seq[5] = (iv32 >> 24) & 0xff;
+ params.seq = seq;
+ params.seq_len = 6;
+ break;
+ case ALG_CCMP:
+ params.cipher = WLAN_CIPHER_SUITE_CCMP;
+ seq[0] = key->u.ccmp.tx_pn[5];
+ seq[1] = key->u.ccmp.tx_pn[4];
+ seq[2] = key->u.ccmp.tx_pn[3];
+ seq[3] = key->u.ccmp.tx_pn[2];
+ seq[4] = key->u.ccmp.tx_pn[1];
+ seq[5] = key->u.ccmp.tx_pn[0];
+ params.seq = seq;
+ params.seq_len = 6;
+ break;
+ case ALG_WEP:
+ if (key->conf.keylen == 5)
+ params.cipher = WLAN_CIPHER_SUITE_WEP40;
+ else
+ params.cipher = WLAN_CIPHER_SUITE_WEP104;
+ break;
+ }
+
+ params.key = key->conf.key;
+ params.key_len = key->conf.keylen;
+
+ callback(cookie, ¶ms);
+ err = 0;
+
+ out:
+ rcu_read_unlock();
+ return err;
+}
+
+static int ieee80211_config_default_key(struct wiphy *wiphy,
+ struct net_device *dev,
+ u8 key_idx)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ rcu_read_lock();
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ieee80211_set_default_key(sdata, key_idx);
+
+ rcu_read_unlock();
+
return 0;
}
+static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+ sinfo->filled = STATION_INFO_INACTIVE_TIME |
+ STATION_INFO_RX_BYTES |
+ STATION_INFO_TX_BYTES;
+
+ sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
+ sinfo->rx_bytes = sta->rx_bytes;
+ sinfo->tx_bytes = sta->tx_bytes;
+
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+#ifdef CONFIG_MAC80211_MESH
+ sinfo->filled |= STATION_INFO_LLID |
+ STATION_INFO_PLID |
+ STATION_INFO_PLINK_STATE;
+
+ sinfo->llid = le16_to_cpu(sta->llid);
+ sinfo->plid = le16_to_cpu(sta->plid);
+ sinfo->plink_state = sta->plink_state;
+#endif
+ }
+}
+
+
+static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *mac, struct station_info *sinfo)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ int ret = -ENOENT;
+
+ rcu_read_lock();
+
+ sta = sta_info_get_by_idx(local, idx, dev);
+ if (sta) {
+ ret = 0;
+ memcpy(mac, sta->addr, ETH_ALEN);
+ sta_set_sinfo(sta, sinfo);
+ }
+
+ rcu_read_unlock();
+
+ return ret;
+}
+
+static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac, struct station_info *sinfo)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ int ret = -ENOENT;
+
+ rcu_read_lock();
+
+ /* XXX: verify sta->dev == dev */
+
+ sta = sta_info_get(local, mac);
+ if (sta) {
+ ret = 0;
+ sta_set_sinfo(sta, sinfo);
+ }
+
+ rcu_read_unlock();
+
+ return ret;
+}
+
+/*
+ * This handles both adding a beacon and setting new beacon info
+ */
+static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
+ struct beacon_parameters *params)
+{
+ struct beacon_data *new, *old;
+ int new_head_len, new_tail_len;
+ int size;
+ int err = -EINVAL;
+
+ old = sdata->u.ap.beacon;
+
+ /* head must not be zero-length */
+ if (params->head && !params->head_len)
+ return -EINVAL;
+
+ /*
+ * This is a kludge. beacon interval should really be part
+ * of the beacon information.
+ */
+ if (params->interval) {
+ sdata->local->hw.conf.beacon_int = params->interval;
+ if (ieee80211_hw_config(sdata->local))
+ return -EINVAL;
+ /*
+ * We updated some parameter so if below bails out
+ * it's not an error.
+ */
+ err = 0;
+ }
+
+ /* Need to have a beacon head if we don't have one yet */
+ if (!params->head && !old)
+ return err;
+
+ /* sorry, no way to start beaconing without dtim period */
+ if (!params->dtim_period && !old)
+ return err;
+
+ /* new or old head? */
+ if (params->head)
+ new_head_len = params->head_len;
+ else
+ new_head_len = old->head_len;
+
+ /* new or old tail? */
+ if (params->tail || !old)
+ /* params->tail_len will be zero for !params->tail */
+ new_tail_len = params->tail_len;
+ else
+ new_tail_len = old->tail_len;
+
+ size = sizeof(*new) + new_head_len + new_tail_len;
+
+ new = kzalloc(size, GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+
+ /* start filling the new info now */
+
+ /* new or old dtim period? */
+ if (params->dtim_period)
+ new->dtim_period = params->dtim_period;
+ else
+ new->dtim_period = old->dtim_period;
+
+ /*
+ * pointers go into the block we allocated,
+ * memory is | beacon_data | head | tail |
+ */
+ new->head = ((u8 *) new) + sizeof(*new);
+ new->tail = new->head + new_head_len;
+ new->head_len = new_head_len;
+ new->tail_len = new_tail_len;
+
+ /* copy in head */
+ if (params->head)
+ memcpy(new->head, params->head, new_head_len);
+ else
+ memcpy(new->head, old->head, new_head_len);
+
+ /* copy in optional tail */
+ if (params->tail)
+ memcpy(new->tail, params->tail, new_tail_len);
+ else
+ if (old)
+ memcpy(new->tail, old->tail, new_tail_len);
+
+ rcu_assign_pointer(sdata->u.ap.beacon, new);
+
+ synchronize_rcu();
+
+ kfree(old);
+
+ return ieee80211_if_config_beacon(sdata->dev);
+}
+
+static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
+ struct beacon_parameters *params)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct beacon_data *old;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EINVAL;
+
+ old = sdata->u.ap.beacon;
+
+ if (old)
+ return -EALREADY;
+
+ return ieee80211_config_beacon(sdata, params);
+}
+
+static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
+ struct beacon_parameters *params)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct beacon_data *old;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EINVAL;
+
+ old = sdata->u.ap.beacon;
+
+ if (!old)
+ return -ENOENT;
+
+ return ieee80211_config_beacon(sdata, params);
+}
+
+static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct beacon_data *old;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EINVAL;
+
+ old = sdata->u.ap.beacon;
+
+ if (!old)
+ return -ENOENT;
+
+ rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ synchronize_rcu();
+ kfree(old);
+
+ return ieee80211_if_config_beacon(dev);
+}
+
+/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
+struct iapp_layer2_update {
+ u8 da[ETH_ALEN]; /* broadcast */
+ u8 sa[ETH_ALEN]; /* STA addr */
+ __be16 len; /* 6 */
+ u8 dsap; /* 0 */
+ u8 ssap; /* 0 */
+ u8 control;
+ u8 xid_info[3];
+} __attribute__ ((packed));
+
+static void ieee80211_send_layer2_update(struct sta_info *sta)
+{
+ struct iapp_layer2_update *msg;
+ struct sk_buff *skb;
+
+ /* Send Level 2 Update Frame to update forwarding tables in layer 2
+ * bridge devices */
+
+ skb = dev_alloc_skb(sizeof(*msg));
+ if (!skb)
+ return;
+ msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
+
+ /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
+ * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
+
+ memset(msg->da, 0xff, ETH_ALEN);
+ memcpy(msg->sa, sta->addr, ETH_ALEN);
+ msg->len = htons(6);
+ msg->dsap = 0;
+ msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
+ msg->control = 0xaf; /* XID response lsb.1111F101.
+ * F=0 (no poll command; unsolicited frame) */
+ msg->xid_info[0] = 0x81; /* XID format identifier */
+ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
+ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
+
+ skb->dev = sta->sdata->dev;
+ skb->protocol = eth_type_trans(skb, sta->sdata->dev);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx(skb);
+}
+
+static void sta_apply_parameters(struct ieee80211_local *local,
+ struct sta_info *sta,
+ struct station_parameters *params)
+{
+ u32 rates;
+ int i, j;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+ /*
+ * FIXME: updating the flags is racy when this function is
+ * called from ieee80211_change_station(), this will
+ * be resolved in a future patch.
+ */
+
+ if (params->station_flags & STATION_FLAG_CHANGED) {
+ sta->flags &= ~WLAN_STA_AUTHORIZED;
+ if (params->station_flags & STATION_FLAG_AUTHORIZED)
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
+ if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
+ sta->flags |= WLAN_STA_SHORT_PREAMBLE;
+
+ sta->flags &= ~WLAN_STA_WME;
+ if (params->station_flags & STATION_FLAG_WME)
+ sta->flags |= WLAN_STA_WME;
+ }
+
+ /*
+ * FIXME: updating the following information is racy when this
+ * function is called from ieee80211_change_station().
+ * However, all this information should be static so
+ * maybe we should just reject attemps to change it.
+ */
+
+ if (params->aid) {
+ sta->aid = params->aid;
+ if (sta->aid > IEEE80211_MAX_AID)
+ sta->aid = 0; /* XXX: should this be an error? */
+ }
+
+ if (params->listen_interval >= 0)
+ sta->listen_interval = params->listen_interval;
+
+ if (params->supported_rates) {
+ rates = 0;
+ sband = local->hw.wiphy->bands[local->oper_channel->band];
+
+ for (i = 0; i < params->supported_rates_len; i++) {
+ int rate = (params->supported_rates[i] & 0x7f) * 5;
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ }
+ }
+ sta->supp_rates[local->oper_channel->band] = rates;
+ }
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
+ switch (params->plink_action) {
+ case PLINK_ACTION_OPEN:
+ mesh_plink_open(sta);
+ break;
+ case PLINK_ACTION_BLOCK:
+ mesh_plink_block(sta);
+ break;
+ }
+ }
+}
+
+static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac, struct station_parameters *params)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ int err;
+
+ /* Prevent a race with changing the rate control algorithm */
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ if (params->vlan) {
+ sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
+ sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EINVAL;
+ } else
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (compare_ether_addr(mac, dev->dev_addr) == 0)
+ return -EINVAL;
+
+ if (is_multicast_ether_addr(mac))
+ return -EINVAL;
+
+ sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
+ if (!sta)
+ return -ENOMEM;
+
+ sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
+
+ sta_apply_parameters(local, sta, params);
+
+ rate_control_rate_init(sta, local);
+
+ rcu_read_lock();
+
+ err = sta_info_insert(sta);
+ if (err) {
+ /* STA has been freed */
+ rcu_read_unlock();
+ return err;
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
+ sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ ieee80211_send_layer2_update(sta);
+
+ rcu_read_unlock();
+
+ return 0;
+}
+
+static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
+ u8 *mac)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ if (mac) {
+ rcu_read_lock();
+
+ /* XXX: get sta belonging to dev */
+ sta = sta_info_get(local, mac);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ sta_info_unlink(&sta);
+ rcu_read_unlock();
+
+ sta_info_destroy(sta);
+ } else
+ sta_info_flush(local, sdata);
+
+ return 0;
+}
+
+static int ieee80211_change_station(struct wiphy *wiphy,
+ struct net_device *dev,
+ u8 *mac,
+ struct station_parameters *params)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *vlansdata;
+
+ rcu_read_lock();
+
+ /* XXX: get sta belonging to dev */
+ sta = sta_info_get(local, mac);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ if (params->vlan && params->vlan != sta->sdata->dev) {
+ vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
+
+ if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
+ vlansdata->vif.type != IEEE80211_IF_TYPE_AP) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
+ ieee80211_send_layer2_update(sta);
+ }
+
+ sta_apply_parameters(local, sta, params);
+
+ rcu_read_unlock();
+
+ return 0;
+}
+
+#ifdef CONFIG_MAC80211_MESH
+static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *next_hop)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+ struct sta_info *sta;
+ int err;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
+ return -ENOTSUPP;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, next_hop);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ err = mesh_path_add(dst, dev);
+ if (err) {
+ rcu_read_unlock();
+ return err;
+ }
+
+ mpath = mesh_path_lookup(dst, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENXIO;
+ }
+ mesh_path_fix_nexthop(mpath, sta);
+
+ rcu_read_unlock();
+ return 0;
+}
+
+static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst)
+{
+ if (dst)
+ return mesh_path_del(dst, dev);
+
+ mesh_path_flush(dev);
+ return 0;
+}
+
+static int ieee80211_change_mpath(struct wiphy *wiphy,
+ struct net_device *dev,
+ u8 *dst, u8 *next_hop)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+ struct sta_info *sta;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
+ return -ENOTSUPP;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, next_hop);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ mpath = mesh_path_lookup(dst, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ mesh_path_fix_nexthop(mpath, sta);
+
+ rcu_read_unlock();
+ return 0;
+}
+
+static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
+ struct mpath_info *pinfo)
+{
+ if (mpath->next_hop)
+ memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
+ else
+ memset(next_hop, 0, ETH_ALEN);
+
+ pinfo->filled = MPATH_INFO_FRAME_QLEN |
+ MPATH_INFO_DSN |
+ MPATH_INFO_METRIC |
+ MPATH_INFO_EXPTIME |
+ MPATH_INFO_DISCOVERY_TIMEOUT |
+ MPATH_INFO_DISCOVERY_RETRIES |
+ MPATH_INFO_FLAGS;
+
+ pinfo->frame_qlen = mpath->frame_queue.qlen;
+ pinfo->dsn = mpath->dsn;
+ pinfo->metric = mpath->metric;
+ if (time_before(jiffies, mpath->exp_time))
+ pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
+ pinfo->discovery_timeout =
+ jiffies_to_msecs(mpath->discovery_timeout);
+ pinfo->discovery_retries = mpath->discovery_retries;
+ pinfo->flags = 0;
+ if (mpath->flags & MESH_PATH_ACTIVE)
+ pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
+ if (mpath->flags & MESH_PATH_RESOLVING)
+ pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
+ if (mpath->flags & MESH_PATH_DSN_VALID)
+ pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
+ if (mpath->flags & MESH_PATH_FIXED)
+ pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
+ if (mpath->flags & MESH_PATH_RESOLVING)
+ pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
+
+ pinfo->flags = mpath->flags;
+}
+
+static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
+
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
+ return -ENOTSUPP;
+
+ rcu_read_lock();
+ mpath = mesh_path_lookup(dst, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+ memcpy(dst, mpath->dst, ETH_ALEN);
+ mpath_set_pinfo(mpath, next_hop, pinfo);
+ rcu_read_unlock();
+ return 0;
+}
+
+static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *dst, u8 *next_hop,
+ struct mpath_info *pinfo)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
+ return -ENOTSUPP;
+
+ rcu_read_lock();
+ mpath = mesh_path_lookup_by_idx(idx, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+ memcpy(dst, mpath->dst, ETH_ALEN);
+ mpath_set_pinfo(mpath, next_hop, pinfo);
+ rcu_read_unlock();
+ return 0;
+}
+#endif
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
.change_virtual_intf = ieee80211_change_iface,
+ .add_key = ieee80211_add_key,
+ .del_key = ieee80211_del_key,
+ .get_key = ieee80211_get_key,
+ .set_default_key = ieee80211_config_default_key,
+ .add_beacon = ieee80211_add_beacon,
+ .set_beacon = ieee80211_set_beacon,
+ .del_beacon = ieee80211_del_beacon,
+ .add_station = ieee80211_add_station,
+ .del_station = ieee80211_del_station,
+ .change_station = ieee80211_change_station,
+ .get_station = ieee80211_get_station,
+ .dump_station = ieee80211_dump_station,
+#ifdef CONFIG_MAC80211_MESH
+ .add_mpath = ieee80211_add_mpath,
+ .del_mpath = ieee80211_del_mpath,
+ .change_mpath = ieee80211_change_mpath,
+ .get_mpath = ieee80211_get_mpath,
+ .dump_mpath = ieee80211_dump_mpath,
+#endif
};
diff --git a/net/mac80211/compat.c b/net/mac80211/compat.c
index d5859fd..e69de29 100644
--- a/net/mac80211/compat.c
+++ b/net/mac80211/compat.c
@@ -1,231 +0,0 @@
-/*
- * Copyright 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Compatibility file for Linux wireless for kernels 2.6.22 - tip
- * The headers don't need to be modified as we're simply adding them.
- */
-
-#include <linux/netpoll.h>
-
-#include <net/mac80211_compat.h>
-
-/* Part of net/ethernet/eth.c as of 2.6.24 */
-char *print_mac(char *buf, const u8 *addr)
-{
- sprintf(buf, MAC_FMT,
- addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
- return buf;
-}
-EXPORT_SYMBOL(print_mac);
-
-/* On net/core/dev.c as of 2.6.24 */
-int __dev_addr_delete(struct dev_addr_list **list, int *count,
- void *addr, int alen, int glbl)
-{
- struct dev_addr_list *da;
-
- for (; (da = *list) != NULL; list = &da->next) {
- if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
- alen == da->da_addrlen) {
- if (glbl) {
- int old_glbl = da->da_gusers;
- da->da_gusers = 0;
- if (old_glbl == 0)
- break;
- }
- if (--da->da_users)
- return 0;
-
- *list = da->next;
- kfree(da);
- (*count)--;
- return 0;
- }
- }
- return -ENOENT;
-}
-
-/* On net/core/dev.c as of 2.6.24. This is not yet used by mac80211 but
- * might as well add it */
-int __dev_addr_add(struct dev_addr_list **list, int *count,
- void *addr, int alen, int glbl)
-{
- struct dev_addr_list *da;
-
- for (da = *list; da != NULL; da = da->next) {
- if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
- da->da_addrlen == alen) {
- if (glbl) {
- int old_glbl = da->da_gusers;
- da->da_gusers = 1;
- if (old_glbl)
- return 0;
- }
- da->da_users++;
- return 0;
- }
- }
-
- da = kmalloc(sizeof(*da), GFP_ATOMIC);
- if (da == NULL)
- return -ENOMEM;
- memcpy(da->da_addr, addr, alen);
- da->da_addrlen = alen;
- da->da_users = 1;
- da->da_gusers = glbl ? 1 : 0;
- da->next = *list;
- *list = da;
- (*count)++;
- return 0;
-}
-
-/* Part of net/core/dev_mcast.c as of 2.6.23. This is a slightly different version.
- * Since da->da_synced is not part of 2.6.22 we need to take longer route when
- * syncing */
-
-/**
- * dev_mc_sync - Synchronize device's multicast list to another device
- * @to: destination device
- * @from: source device
- *
- * Add newly added addresses to the destination device and release
- * addresses that have no users left. The source device must be
- * locked by netif_tx_lock_bh.
- *
- * This function is intended to be called from the dev->set_multicast_list
- * function of layered software devices.
- */
-int dev_mc_sync(struct net_device *to, struct net_device *from)
-{
- struct dev_addr_list *da, *next, *da_to;
- int err = 0;
-
- netif_tx_lock_bh(to);
- da = from->mc_list;
- while (da != NULL) {
- int synced = 0;
- next = da->next;
- da_to = to->mc_list;
- /* 2.6.22 does not have da->da_synced so lets take the long route */
- while (da_to != NULL) {
- if (memcmp(da_to->da_addr, da->da_addr, da_to->da_addrlen) == 0 &&
- da->da_addrlen == da_to->da_addrlen) {
- synced = 1;
- break;
- }
- da_to = da_to->next;
- }
- if (!synced) {
- err = __dev_addr_add(&to->mc_list, &to->mc_count,
- da->da_addr, da->da_addrlen, 0);
- if (err < 0)
- break;
- da->da_users++;
- } else if (da->da_users == 1) {
- __dev_addr_delete(&to->mc_list, &to->mc_count,
- da->da_addr, da->da_addrlen, 0);
- __dev_addr_delete(&from->mc_list, &from->mc_count,
- da->da_addr, da->da_addrlen, 0);
- }
- da = next;
- }
- if (!err)
- __dev_set_rx_mode(to);
- netif_tx_unlock_bh(to);
-
- return err;
-}
-EXPORT_SYMBOL(dev_mc_sync);
-
-
-/* Part of net/core/dev_mcast.c as of 2.6.23. This is a slighty different version.
- * Since da->da_synced is not part of 2.6.22 we need to take longer route when
- * unsyncing */
-
-/**
- * dev_mc_unsync - Remove synchronized addresses from the destination
- * device
- * @to: destination device
- * @from: source device
- *
- * Remove all addresses that were added to the destination device by
- * dev_mc_sync(). This function is intended to be called from the
- * dev->stop function of layered software devices.
- */
-void dev_mc_unsync(struct net_device *to, struct net_device *from)
-{
- struct dev_addr_list *da, *next, *da_to;
-
- netif_tx_lock_bh(from);
- netif_tx_lock_bh(to);
-
- da = from->mc_list;
- while (da != NULL) {
- bool synced = false;
- next = da->next;
- da_to = to->mc_list;
- /* 2.6.22 does not have da->da_synced so lets take the long route */
- while (da_to != NULL) {
- if (memcmp(da_to->da_addr, da->da_addr, da_to->da_addrlen) == 0 &&
- da->da_addrlen == da_to->da_addrlen) {
- synced = true;
- break;
- }
- da_to = da_to->next;
- }
- if (!synced) {
- da = next;
- continue;
- }
- __dev_addr_delete(&to->mc_list, &to->mc_count,
- da->da_addr, da->da_addrlen, 0);
- __dev_addr_delete(&from->mc_list, &from->mc_count,
- da->da_addr, da->da_addrlen, 0);
- da = next;
- }
- __dev_set_rx_mode(to);
-
- netif_tx_unlock_bh(to);
- netif_tx_unlock_bh(from);
-}
-EXPORT_SYMBOL(dev_mc_unsync);
-
-/* Added as of 2.6.23 on net/core/dev.c. Slightly modifed, no dev->set_rx_mode on
- * 2.6.22 so ignore that. */
-
-/*
- * Upload unicast and multicast address lists to device and
- * configure RX filtering. When the device doesn't support unicast
- * filtering it is put in promiscous mode while unicast addresses
- * are present.
- */
-void __dev_set_rx_mode(struct net_device *dev)
-{
- /* dev_open will call this function so the list will stay sane. */
- if (!(dev->flags&IFF_UP))
- return;
-
- if (!netif_device_present(dev))
- return;
-
-/* This needs to be ported to 2.6.22 framework */
-#if 0
- /* Unicast addresses changes may only happen under the rtnl,
- * therefore calling __dev_set_promiscuity here is safe.
- */
- if (dev->uc_count > 0 && !dev->uc_promisc) {
- __dev_set_promiscuity(dev, 1);
- dev->uc_promisc = 1;
- } else if (dev->uc_count == 0 && dev->uc_promisc) {
- __dev_set_promiscuity(dev, -1);
- dev->uc_promisc = 0;
- }
-#endif
-
- if (dev->set_multicast_list)
- dev->set_multicast_list(dev);
-}
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 60514b2..1cccbfd 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -10,7 +10,7 @@
#include <linux/debugfs.h>
#include <linux/rtnetlink.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "debugfs.h"
int mac80211_open_file_generic(struct inode *inode, struct file *file)
@@ -19,41 +19,6 @@ int mac80211_open_file_generic(struct inode *inode, struct file *file)
return 0;
}
-static const char *ieee80211_mode_str(int mode)
-{
- switch (mode) {
- case MODE_IEEE80211A:
- return "IEEE 802.11a";
- case MODE_IEEE80211B:
- return "IEEE 802.11b";
- case MODE_IEEE80211G:
- return "IEEE 802.11g";
- default:
- return "UNKNOWN";
- }
-}
-
-static ssize_t modes_read(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct ieee80211_local *local = file->private_data;
- struct ieee80211_hw_mode *mode;
- char buf[150], *p = buf;
-
- /* FIXME: locking! */
- list_for_each_entry(mode, &local->modes_list, list) {
- p += scnprintf(p, sizeof(buf)+buf-p,
- "%s\n", ieee80211_mode_str(mode->mode));
- }
-
- return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
-}
-
-static const struct file_operations modes_ops = {
- .read = modes_read,
- .open = mac80211_open_file_generic,
-};
-
#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
static ssize_t name## _read(struct file *file, char __user *userbuf, \
size_t count, loff_t *ppos) \
@@ -72,7 +37,7 @@ static const struct file_operations name## _ops = { \
};
#define DEBUGFS_ADD(name) \
- local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \
+ local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \
local, &name## _ops);
#define DEBUGFS_DEL(name) \
@@ -80,10 +45,8 @@ static const struct file_operations name## _ops = { \
local->debugfs.name = NULL;
-DEBUGFS_READONLY_FILE(channel, 20, "%d",
- local->hw.conf.channel);
DEBUGFS_READONLY_FILE(frequency, 20, "%d",
- local->hw.conf.freq);
+ local->hw.conf.channel->center_freq);
DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
local->hw.conf.antenna_sel_tx);
DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
@@ -100,8 +63,6 @@ DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
local->long_retry_limit);
DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
local->total_ps_buffered);
-DEBUGFS_READONLY_FILE(mode, 20, "%s",
- ieee80211_mode_str(local->hw.conf.phymode));
DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
local->wep_iv & 0xffffff);
DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
@@ -169,7 +130,7 @@ static const struct file_operations stats_ ##name## _ops = { \
};
#define DEBUGFS_STATS_ADD(name) \
- local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
+ local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
local, &stats_ ##name## _ops);
#define DEBUGFS_STATS_DEL(name) \
@@ -294,7 +255,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
local->debugfs.stations = debugfs_create_dir("stations", phyd);
local->debugfs.keys = debugfs_create_dir("keys", phyd);
- DEBUGFS_ADD(channel);
DEBUGFS_ADD(frequency);
DEBUGFS_ADD(antenna_sel_tx);
DEBUGFS_ADD(antenna_sel_rx);
@@ -304,9 +264,7 @@ void debugfs_hw_add(struct ieee80211_local *local)
DEBUGFS_ADD(short_retry_limit);
DEBUGFS_ADD(long_retry_limit);
DEBUGFS_ADD(total_ps_buffered);
- DEBUGFS_ADD(mode);
DEBUGFS_ADD(wep_iv);
- DEBUGFS_ADD(modes);
statsd = debugfs_create_dir("statistics", phyd);
local->debugfs.statistics = statsd;
@@ -356,7 +314,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
void debugfs_hw_del(struct ieee80211_local *local)
{
- DEBUGFS_DEL(channel);
DEBUGFS_DEL(frequency);
DEBUGFS_DEL(antenna_sel_tx);
DEBUGFS_DEL(antenna_sel_rx);
@@ -366,9 +323,7 @@ void debugfs_hw_del(struct ieee80211_local *local)
DEBUGFS_DEL(short_retry_limit);
DEBUGFS_DEL(long_retry_limit);
DEBUGFS_DEL(total_ps_buffered);
- DEBUGFS_DEL(mode);
DEBUGFS_DEL(wep_iv);
- DEBUGFS_DEL(modes);
DEBUGFS_STATS_DEL(transmitted_fragment_count);
DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index c881524..19efc3a 100644
--- a/net/mac80211/debugfs_key.c
+++ b/net/mac80211/debugfs_key.c
@@ -10,7 +10,7 @@
#include <linux/kobject.h>
#include "ieee80211_i.h"
-#include "ieee80211_key.h"
+#include "key.h"
#include "debugfs.h"
#include "debugfs_key.h"
@@ -184,23 +184,36 @@ KEY_OPS(key);
key->debugfs.name = debugfs_create_file(#name, 0400,\
key->debugfs.dir, key, &key_##name##_ops);
-void ieee80211_debugfs_key_add(struct ieee80211_local *local,
- struct ieee80211_key *key)
-{
+void ieee80211_debugfs_key_add(struct ieee80211_key *key)
+ {
static int keycount;
- char buf[20];
+ char buf[50];
+ DECLARE_MAC_BUF(mac);
+ struct sta_info *sta;
- if (!local->debugfs.keys)
+ if (!key->local->debugfs.keys)
return;
sprintf(buf, "%d", keycount);
+ key->debugfs.cnt = keycount;
keycount++;
key->debugfs.dir = debugfs_create_dir(buf,
- local->debugfs.keys);
+ key->local->debugfs.keys);
if (!key->debugfs.dir)
return;
+ rcu_read_lock();
+ sta = rcu_dereference(key->sta);
+ if (sta)
+ sprintf(buf, "../../stations/%s", print_mac(mac, sta->addr));
+ rcu_read_unlock();
+
+ /* using sta as a boolean is fine outside RCU lock */
+ if (sta)
+ key->debugfs.stalink =
+ debugfs_create_symlink("station", key->debugfs.dir, buf);
+
DEBUGFS_ADD(keylen);
DEBUGFS_ADD(flags);
DEBUGFS_ADD(keyidx);
@@ -242,14 +255,23 @@ void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
{
char buf[50];
+ struct ieee80211_key *key;
if (!sdata->debugfsdir)
return;
- sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx);
- sdata->debugfs.default_key =
- debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
+ /* this is running under the key lock */
+
+ key = sdata->default_key;
+ if (key) {
+ sprintf(buf, "../keys/%d", key->debugfs.cnt);
+ sdata->debugfs.default_key =
+ debugfs_create_symlink("default_key",
+ sdata->debugfsdir, buf);
+ } else
+ ieee80211_debugfs_key_remove_default(sdata);
}
+
void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
{
if (!sdata)
@@ -258,19 +280,6 @@ void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
debugfs_remove(sdata->debugfs.default_key);
sdata->debugfs.default_key = NULL;
}
-void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
- struct sta_info *sta)
-{
- char buf[50];
- DECLARE_MAC_BUF(mac);
-
- if (!key->debugfs.dir)
- return;
-
- sprintf(buf, "../../stations/%s", print_mac(mac, sta->addr));
- key->debugfs.stalink =
- debugfs_create_symlink("station", key->debugfs.dir, buf);
-}
void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
struct sta_info *sta)
diff --git a/net/mac80211/debugfs_key.h b/net/mac80211/debugfs_key.h
index aecfce3..b1a3754 100644
--- a/net/mac80211/debugfs_key.h
+++ b/net/mac80211/debugfs_key.h
@@ -2,18 +2,14 @@
#define __MAC80211_DEBUGFS_KEY_H
#ifdef CONFIG_MAC80211_DEBUGFS
-void ieee80211_debugfs_key_add(struct ieee80211_local *local,
- struct ieee80211_key *key);
+void ieee80211_debugfs_key_add(struct ieee80211_key *key);
void ieee80211_debugfs_key_remove(struct ieee80211_key *key);
void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata);
-void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
- struct sta_info *sta);
void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
struct sta_info *sta);
#else
-static inline void ieee80211_debugfs_key_add(struct ieee80211_local *local,
- struct ieee80211_key *key)
+static inline void ieee80211_debugfs_key_add(struct ieee80211_key *key)
{}
static inline void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
{}
@@ -23,9 +19,6 @@ static inline void ieee80211_debugfs_key_add_default(
static inline void ieee80211_debugfs_key_remove_default(
struct ieee80211_sub_if_data *sdata)
{}
-static inline void ieee80211_debugfs_key_sta_link(
- struct ieee80211_key *key, struct sta_info *sta)
-{}
static inline void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
struct sta_info *sta)
{}
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index f0e6ab7..e3326d0 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -17,7 +17,7 @@
#include <net/mac80211.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "debugfs.h"
#include "debugfs_netdev.h"
@@ -31,14 +31,39 @@ static ssize_t ieee80211_if_read(
ssize_t ret = -EINVAL;
read_lock(&dev_base_lock);
- if (sdata->dev->reg_state == NETREG_REGISTERED) {
+ if (sdata->dev->reg_state == NETREG_REGISTERED)
ret = (*format)(sdata, buf, sizeof(buf));
- ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
- }
read_unlock(&dev_base_lock);
+
+ if (ret != -EINVAL)
+ ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+
return ret;
}
+#ifdef CONFIG_MAC80211_MESH
+static ssize_t ieee80211_if_write(
+ struct ieee80211_sub_if_data *sdata,
+ char const __user *userbuf,
+ size_t count, loff_t *ppos,
+ int (*format)(struct ieee80211_sub_if_data *, char *))
+{
+ char buf[10];
+ int buf_size;
+
+ memset(buf, 0x00, sizeof(buf));
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, userbuf, buf_size))
+ return count;
+ read_lock(&dev_base_lock);
+ if (sdata->dev->reg_state == NETREG_REGISTERED)
+ (*format)(sdata, buf);
+ read_unlock(&dev_base_lock);
+
+ return count;
+}
+#endif
+
#define IEEE80211_IF_FMT(name, field, format_string) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, char *buf, \
@@ -46,6 +71,19 @@ static ssize_t ieee80211_if_fmt_##name( \
{ \
return scnprintf(buf, buflen, format_string, sdata->field); \
}
+#define IEEE80211_IF_WFMT(name, field, type) \
+static int ieee80211_if_wfmt_##name( \
+ struct ieee80211_sub_if_data *sdata, char *buf) \
+{ \
+ unsigned long tmp; \
+ char *endp; \
+ \
+ tmp = simple_strtoul(buf, &endp, 0); \
+ if ((endp == buf) || ((type)tmp != tmp)) \
+ return -EINVAL; \
+ sdata->field = tmp; \
+ return 0; \
+}
#define IEEE80211_IF_FMT_DEC(name, field) \
IEEE80211_IF_FMT(name, field, "%d\n")
#define IEEE80211_IF_FMT_HEX(name, field) \
@@ -88,11 +126,37 @@ static const struct file_operations name##_ops = { \
IEEE80211_IF_FMT_##format(name, field) \
__IEEE80211_IF_FILE(name)
+#define __IEEE80211_IF_WFILE(name) \
+static ssize_t ieee80211_if_read_##name(struct file *file, \
+ char __user *userbuf, \
+ size_t count, loff_t *ppos) \
+{ \
+ return ieee80211_if_read(file->private_data, \
+ userbuf, count, ppos, \
+ ieee80211_if_fmt_##name); \
+} \
+static ssize_t ieee80211_if_write_##name(struct file *file, \
+ const char __user *userbuf, \
+ size_t count, loff_t *ppos) \
+{ \
+ return ieee80211_if_write(file->private_data, \
+ userbuf, count, ppos, \
+ ieee80211_if_wfmt_##name); \
+} \
+static const struct file_operations name##_ops = { \
+ .read = ieee80211_if_read_##name, \
+ .write = ieee80211_if_write_##name, \
+ .open = mac80211_open_file_generic, \
+}
+
+#define IEEE80211_IF_WFILE(name, field, format, type) \
+ IEEE80211_IF_FMT_##format(name, field) \
+ IEEE80211_IF_WFMT(name, field, type) \
+ __IEEE80211_IF_WFILE(name)
+
/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
-IEEE80211_IF_FILE(eapol, eapol, DEC);
-IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);
/* STA/IBSS attributes */
IEEE80211_IF_FILE(state, u.sta.state, DEC);
@@ -108,6 +172,7 @@ IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
+IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
static ssize_t ieee80211_if_fmt_flags(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
@@ -119,13 +184,12 @@ static ssize_t ieee80211_if_fmt_flags(
sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
- sdata->flags & IEEE80211_SDATA_USE_PROTECTION ? "CTS prot\n" : "");
+ sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
}
__IEEE80211_IF_FILE(flags);
/* AP attributes */
IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
-IEEE80211_IF_FILE(dtim_period, u.ap.dtim_period, DEC);
IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
@@ -139,39 +203,53 @@ static ssize_t ieee80211_if_fmt_num_buffered_multicast(
}
__IEEE80211_IF_FILE(num_buffered_multicast);
-static ssize_t ieee80211_if_fmt_beacon_head_len(
- const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
-{
- if (sdata->u.ap.beacon_head)
- return scnprintf(buf, buflen, "%d\n",
- sdata->u.ap.beacon_head_len);
- return scnprintf(buf, buflen, "\n");
-}
-__IEEE80211_IF_FILE(beacon_head_len);
-
-static ssize_t ieee80211_if_fmt_beacon_tail_len(
- const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
-{
- if (sdata->u.ap.beacon_tail)
- return scnprintf(buf, buflen, "%d\n",
- sdata->u.ap.beacon_tail_len);
- return scnprintf(buf, buflen, "\n");
-}
-__IEEE80211_IF_FILE(beacon_tail_len);
-
/* WDS attributes */
IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
+#ifdef CONFIG_MAC80211_MESH
+/* Mesh stats attributes */
+IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
+IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
+IEEE80211_IF_FILE(dropped_frames_no_route,
+ u.sta.mshstats.dropped_frames_no_route, DEC);
+IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
+
+/* Mesh parameters */
+IEEE80211_IF_WFILE(dot11MeshMaxRetries,
+ u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
+IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
+ u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
+ u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
+ u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
+IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
+IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
+ u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
+ u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
+IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
+ u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
+ u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
+IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
+ u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
+IEEE80211_IF_WFILE(path_refresh_time,
+ u.sta.mshcfg.path_refresh_time, DEC, u32);
+IEEE80211_IF_WFILE(min_discovery_timeout,
+ u.sta.mshcfg.min_discovery_timeout, DEC, u16);
+#endif
+
+
#define DEBUGFS_ADD(name, type)\
- sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
+ sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
sdata->debugfsdir, sdata, &name##_ops);
static void add_sta_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, sta);
DEBUGFS_ADD(drop_unencrypted, sta);
- DEBUGFS_ADD(eapol, sta);
- DEBUGFS_ADD(ieee8021_x, sta);
DEBUGFS_ADD(state, sta);
DEBUGFS_ADD(bssid, sta);
DEBUGFS_ADD(prev_bssid, sta);
@@ -186,31 +264,25 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(auth_alg, sta);
DEBUGFS_ADD(auth_transaction, sta);
DEBUGFS_ADD(flags, sta);
+ DEBUGFS_ADD(num_beacons_sta, sta);
}
static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, ap);
DEBUGFS_ADD(drop_unencrypted, ap);
- DEBUGFS_ADD(eapol, ap);
- DEBUGFS_ADD(ieee8021_x, ap);
DEBUGFS_ADD(num_sta_ps, ap);
- DEBUGFS_ADD(dtim_period, ap);
DEBUGFS_ADD(dtim_count, ap);
DEBUGFS_ADD(num_beacons, ap);
DEBUGFS_ADD(force_unicast_rateidx, ap);
DEBUGFS_ADD(max_ratectrl_rateidx, ap);
DEBUGFS_ADD(num_buffered_multicast, ap);
- DEBUGFS_ADD(beacon_head_len, ap);
- DEBUGFS_ADD(beacon_tail_len, ap);
}
static void add_wds_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, wds);
DEBUGFS_ADD(drop_unencrypted, wds);
- DEBUGFS_ADD(eapol, wds);
- DEBUGFS_ADD(ieee8021_x, wds);
DEBUGFS_ADD(peer, wds);
}
@@ -218,20 +290,63 @@ static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, vlan);
DEBUGFS_ADD(drop_unencrypted, vlan);
- DEBUGFS_ADD(eapol, vlan);
- DEBUGFS_ADD(ieee8021_x, vlan);
}
static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}
+#ifdef CONFIG_MAC80211_MESH
+#define MESHSTATS_ADD(name)\
+ sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
+ sdata->mesh_stats_dir, sdata, &name##_ops);
+
+static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
+{
+ sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
+ sdata->debugfsdir);
+ MESHSTATS_ADD(fwded_frames);
+ MESHSTATS_ADD(dropped_frames_ttl);
+ MESHSTATS_ADD(dropped_frames_no_route);
+ MESHSTATS_ADD(estab_plinks);
+}
+
+#define MESHPARAMS_ADD(name)\
+ sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
+ sdata->mesh_config_dir, sdata, &name##_ops);
+
+static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
+{
+ sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
+ sdata->debugfsdir);
+ MESHPARAMS_ADD(dot11MeshMaxRetries);
+ MESHPARAMS_ADD(dot11MeshRetryTimeout);
+ MESHPARAMS_ADD(dot11MeshConfirmTimeout);
+ MESHPARAMS_ADD(dot11MeshHoldingTimeout);
+ MESHPARAMS_ADD(dot11MeshTTL);
+ MESHPARAMS_ADD(auto_open_plinks);
+ MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
+ MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
+ MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
+ MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
+ MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
+ MESHPARAMS_ADD(path_refresh_time);
+ MESHPARAMS_ADD(min_discovery_timeout);
+}
+#endif
+
static void add_files(struct ieee80211_sub_if_data *sdata)
{
if (!sdata->debugfsdir)
return;
- switch (sdata->type) {
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_MESH_POINT:
+#ifdef CONFIG_MAC80211_MESH
+ add_mesh_stats(sdata);
+ add_mesh_config(sdata);
+#endif
+ /* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
add_sta_files(sdata);
@@ -263,8 +378,6 @@ static void del_sta_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, sta);
DEBUGFS_DEL(drop_unencrypted, sta);
- DEBUGFS_DEL(eapol, sta);
- DEBUGFS_DEL(ieee8021_x, sta);
DEBUGFS_DEL(state, sta);
DEBUGFS_DEL(bssid, sta);
DEBUGFS_DEL(prev_bssid, sta);
@@ -279,31 +392,25 @@ static void del_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_DEL(auth_alg, sta);
DEBUGFS_DEL(auth_transaction, sta);
DEBUGFS_DEL(flags, sta);
+ DEBUGFS_DEL(num_beacons_sta, sta);
}
static void del_ap_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, ap);
DEBUGFS_DEL(drop_unencrypted, ap);
- DEBUGFS_DEL(eapol, ap);
- DEBUGFS_DEL(ieee8021_x, ap);
DEBUGFS_DEL(num_sta_ps, ap);
- DEBUGFS_DEL(dtim_period, ap);
DEBUGFS_DEL(dtim_count, ap);
DEBUGFS_DEL(num_beacons, ap);
DEBUGFS_DEL(force_unicast_rateidx, ap);
DEBUGFS_DEL(max_ratectrl_rateidx, ap);
DEBUGFS_DEL(num_buffered_multicast, ap);
- DEBUGFS_DEL(beacon_head_len, ap);
- DEBUGFS_DEL(beacon_tail_len, ap);
}
static void del_wds_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, wds);
DEBUGFS_DEL(drop_unencrypted, wds);
- DEBUGFS_DEL(eapol, wds);
- DEBUGFS_DEL(ieee8021_x, wds);
DEBUGFS_DEL(peer, wds);
}
@@ -311,20 +418,67 @@ static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, vlan);
DEBUGFS_DEL(drop_unencrypted, vlan);
- DEBUGFS_DEL(eapol, vlan);
- DEBUGFS_DEL(ieee8021_x, vlan);
}
static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}
+#ifdef CONFIG_MAC80211_MESH
+#define MESHSTATS_DEL(name) \
+ do { \
+ debugfs_remove(sdata->mesh_stats.name); \
+ sdata->mesh_stats.name = NULL; \
+ } while (0)
+
+static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
+{
+ MESHSTATS_DEL(fwded_frames);
+ MESHSTATS_DEL(dropped_frames_ttl);
+ MESHSTATS_DEL(dropped_frames_no_route);
+ MESHSTATS_DEL(estab_plinks);
+ debugfs_remove(sdata->mesh_stats_dir);
+ sdata->mesh_stats_dir = NULL;
+}
+
+#define MESHPARAMS_DEL(name) \
+ do { \
+ debugfs_remove(sdata->mesh_config.name); \
+ sdata->mesh_config.name = NULL; \
+ } while (0)
+
+static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
+{
+ MESHPARAMS_DEL(dot11MeshMaxRetries);
+ MESHPARAMS_DEL(dot11MeshRetryTimeout);
+ MESHPARAMS_DEL(dot11MeshConfirmTimeout);
+ MESHPARAMS_DEL(dot11MeshHoldingTimeout);
+ MESHPARAMS_DEL(dot11MeshTTL);
+ MESHPARAMS_DEL(auto_open_plinks);
+ MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
+ MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
+ MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
+ MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
+ MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
+ MESHPARAMS_DEL(path_refresh_time);
+ MESHPARAMS_DEL(min_discovery_timeout);
+ debugfs_remove(sdata->mesh_config_dir);
+ sdata->mesh_config_dir = NULL;
+}
+#endif
+
static void del_files(struct ieee80211_sub_if_data *sdata, int type)
{
if (!sdata->debugfsdir)
return;
switch (type) {
+ case IEEE80211_IF_TYPE_MESH_POINT:
+#ifdef CONFIG_MAC80211_MESH
+ del_mesh_stats(sdata);
+ del_mesh_config(sdata);
+#endif
+ /* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
del_sta_files(sdata);
@@ -362,7 +516,7 @@ void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
{
- del_files(sdata, sdata->type);
+ del_files(sdata, sdata->vif.type);
debugfs_remove(sdata->debugfsdir);
sdata->debugfsdir = NULL;
}
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 8f5944c..6d47a1d 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -33,25 +33,16 @@ static ssize_t sta_ ##name## _read(struct file *file, \
#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
-#define STA_READ_RATE(name, field) \
-static ssize_t sta_##name##_read(struct file *file, \
- char __user *userbuf, \
- size_t count, loff_t *ppos) \
-{ \
- struct sta_info *sta = file->private_data; \
- struct ieee80211_local *local = wdev_priv(sta->dev->ieee80211_ptr);\
- struct ieee80211_hw_mode *mode = local->oper_hw_mode; \
- char buf[20]; \
- int res = scnprintf(buf, sizeof(buf), "%d\n", \
- (sta->field >= 0 && \
- sta->field < mode->num_rates) ? \
- mode->rates[sta->field].rate : -1); \
- return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+#define STA_OPS(name) \
+static const struct file_operations sta_ ##name## _ops = { \
+ .read = sta_##name##_read, \
+ .open = mac80211_open_file_generic, \
}
-#define STA_OPS(name) \
+#define STA_OPS_WR(name) \
static const struct file_operations sta_ ##name## _ops = { \
.read = sta_##name##_read, \
+ .write = sta_##name##_write, \
.open = mac80211_open_file_generic, \
}
@@ -60,7 +51,7 @@ static const struct file_operations sta_ ##name## _ops = { \
STA_OPS(name)
STA_FILE(aid, aid, D);
-STA_FILE(dev, dev->name, S);
+STA_FILE(dev, sdata->dev->name, S);
STA_FILE(rx_packets, rx_packets, LU);
STA_FILE(tx_packets, tx_packets, LU);
STA_FILE(rx_bytes, rx_bytes, LU);
@@ -70,27 +61,23 @@ STA_FILE(rx_fragments, rx_fragments, LU);
STA_FILE(rx_dropped, rx_dropped, LU);
STA_FILE(tx_fragments, tx_fragments, LU);
STA_FILE(tx_filtered, tx_filtered_count, LU);
-STA_FILE(txrate, txrate, RATE);
-STA_FILE(last_txrate, last_txrate, RATE);
STA_FILE(tx_retry_failed, tx_retry_failed, LU);
STA_FILE(tx_retry_count, tx_retry_count, LU);
STA_FILE(last_rssi, last_rssi, D);
STA_FILE(last_signal, last_signal, D);
STA_FILE(last_noise, last_noise, D);
STA_FILE(channel_use, channel_use, D);
-STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
+STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[100];
struct sta_info *sta = file->private_data;
- int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
+ int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s",
sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
sta->flags & WLAN_STA_PS ? "PS\n" : "",
- sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
- sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
sta->flags & WLAN_STA_WME ? "WME\n" : "",
@@ -111,31 +98,6 @@ static ssize_t sta_num_ps_buf_frames_read(struct file *file,
}
STA_OPS(num_ps_buf_frames);
-static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- char buf[100];
- struct sta_info *sta = file->private_data;
- int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
- sta->last_ack_rssi[0],
- sta->last_ack_rssi[1],
- sta->last_ack_rssi[2]);
- return simple_read_from_buffer(userbuf, count, ppos, buf, res);
-}
-STA_OPS(last_ack_rssi);
-
-static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- char buf[20];
- struct sta_info *sta = file->private_data;
- int res = scnprintf(buf, sizeof(buf), "%d\n",
- sta->last_ack ?
- jiffies_to_msecs(jiffies - sta->last_ack) : -1);
- return simple_read_from_buffer(userbuf, count, ppos, buf, res);
-}
-STA_OPS(last_ack_ms);
-
static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
@@ -191,8 +153,120 @@ static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
STA_OPS(wme_tx_queue);
#endif
+static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ char buf[768], *p = buf;
+ int i;
+ struct sta_info *sta = file->private_data;
+ p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
+ p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
+ "TIDs info is: \n TID :",
+ (sta->ampdu_mlme.dialog_token_allocator + 1));
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n RX :");
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
+ sta->ampdu_mlme.tid_state_rx[i]);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
+ sta->ampdu_mlme.tid_state_rx[i]?
+ sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n TX :");
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
+ sta->ampdu_mlme.tid_state_tx[i]);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
+ sta->ampdu_mlme.tid_state_tx[i]?
+ sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
+ for (i = 0; i < STA_TID_NUM; i++)
+ p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
+ sta->ampdu_mlme.tid_state_tx[i]?
+ sta->ampdu_mlme.tid_tx[i]->ssn : 0);
+
+ p += scnprintf(p, sizeof(buf)+buf-p, "\n");
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+}
+
+static ssize_t sta_agg_status_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct sta_info *sta = file->private_data;
+ struct net_device *dev = sta->sdata->dev;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ u8 *da = sta->addr;
+ static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0};
+ static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1};
+ char *endp;
+ char buf[32];
+ int buf_size, rs;
+ unsigned int tid_num;
+ char state[4];
+
+ memset(buf, 0x00, sizeof(buf));
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+
+ tid_num = simple_strtoul(buf, &endp, 0);
+ if (endp == buf)
+ return -EINVAL;
+
+ if ((tid_num >= 100) && (tid_num <= 115)) {
+ /* toggle Rx aggregation command */
+ tid_num = tid_num - 100;
+ if (tid_static_rx[tid_num] == 1) {
+ strcpy(state, "off ");
+ ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
+ WLAN_REASON_QSTA_REQUIRE_SETUP);
+ sta->ampdu_mlme.tid_state_rx[tid_num] |=
+ HT_AGG_STATE_DEBUGFS_CTL;
+ tid_static_rx[tid_num] = 0;
+ } else {
+ strcpy(state, "on ");
+ sta->ampdu_mlme.tid_state_rx[tid_num] &=
+ ~HT_AGG_STATE_DEBUGFS_CTL;
+ tid_static_rx[tid_num] = 1;
+ }
+ printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",
+ tid_num, state);
+ } else if ((tid_num >= 0) && (tid_num <= 15)) {
+ /* toggle Tx aggregation command */
+ if (tid_static_tx[tid_num] == 0) {
+ strcpy(state, "on ");
+ rs = ieee80211_start_tx_ba_session(hw, da, tid_num);
+ if (rs == 0)
+ tid_static_tx[tid_num] = 1;
+ } else {
+ strcpy(state, "off");
+ rs = ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);
+ if (rs == 0)
+ tid_static_tx[tid_num] = 0;
+ }
+ printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",
+ tid_num, state, rs);
+ }
+
+ return count;
+}
+STA_OPS_WR(agg_status);
+
#define DEBUGFS_ADD(name) \
- sta->debugfs.name = debugfs_create_file(#name, 0444, \
+ sta->debugfs.name = debugfs_create_file(#name, 0400, \
sta->debugfs.dir, sta, &sta_ ##name## _ops);
#define DEBUGFS_DEL(name) \
@@ -203,12 +277,13 @@ STA_OPS(wme_tx_queue);
void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
struct dentry *stations_dir = sta->local->debugfs.stations;
- DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mbuf);
+ u8 *mac;
if (!stations_dir)
return;
- print_mac(mac, sta->addr);
+ mac = print_mac(mbuf, sta->addr);
sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
if (!sta->debugfs.dir)
@@ -216,28 +291,26 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
DEBUGFS_ADD(flags);
DEBUGFS_ADD(num_ps_buf_frames);
- DEBUGFS_ADD(last_ack_rssi);
- DEBUGFS_ADD(last_ack_ms);
DEBUGFS_ADD(inactive_ms);
DEBUGFS_ADD(last_seq_ctrl);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
DEBUGFS_ADD(wme_rx_queue);
DEBUGFS_ADD(wme_tx_queue);
#endif
+ DEBUGFS_ADD(agg_status);
}
void ieee80211_sta_debugfs_remove(struct sta_info *sta)
{
DEBUGFS_DEL(flags);
DEBUGFS_DEL(num_ps_buf_frames);
- DEBUGFS_DEL(last_ack_rssi);
- DEBUGFS_DEL(last_ack_ms);
DEBUGFS_DEL(inactive_ms);
DEBUGFS_DEL(last_seq_ctrl);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
DEBUGFS_DEL(wme_rx_queue);
DEBUGFS_DEL(wme_tx_queue);
#endif
+ DEBUGFS_DEL(agg_status);
debugfs_remove(sta->debugfs.dir);
sta->debugfs.dir = NULL;
diff --git a/net/mac80211/debugfs_sta.h b/net/mac80211/debugfs_sta.h
index 574a1cd..8b60890 100644
--- a/net/mac80211/debugfs_sta.h
+++ b/net/mac80211/debugfs_sta.h
@@ -1,6 +1,8 @@
#ifndef __MAC80211_DEBUGFS_STA_H
#define __MAC80211_DEBUGFS_STA_H
+#include "sta_info.h"
+
#ifdef CONFIG_MAC80211_DEBUGFS
void ieee80211_sta_debugfs_add(struct sta_info *sta);
void ieee80211_sta_debugfs_remove(struct sta_info *sta);
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index a43b13b..e69de29 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -1,1371 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <net/mac80211.h>
-#include <net/ieee80211_radiotap.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <linux/rtnetlink.h>
-#include <linux/bitmap.h>
-#if 0 /* Not in RHEL5 */
-#include <net/net_namespace.h>
-#endif
-#include <net/cfg80211.h>
-
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "wep.h"
-#include "wme.h"
-#include "aes_ccm.h"
-#include "ieee80211_led.h"
-#include "cfg.h"
-#include "debugfs.h"
-#include "debugfs_netdev.h"
-
-#define SUPP_MCS_SET_LEN 16
-
-/*
- * For seeing transmitted packets on monitor interfaces
- * we have a radiotap header too.
- */
-struct ieee80211_tx_status_rtap_hdr {
- struct ieee80211_radiotap_header hdr;
- __le16 tx_flags;
- u8 data_retries;
-} __attribute__ ((packed));
-
-/* common interface routines */
-
-static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
-{
- memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
- return ETH_ALEN;
-}
-
-/* must be called under mdev tx lock */
-static void ieee80211_configure_filter(struct ieee80211_local *local)
-{
- unsigned int changed_flags;
- unsigned int new_flags = 0;
-
- if (atomic_read(&local->iff_promiscs))
- new_flags |= FIF_PROMISC_IN_BSS;
-
- if (atomic_read(&local->iff_allmultis))
- new_flags |= FIF_ALLMULTI;
-
- if (local->monitors)
- new_flags |= FIF_CONTROL |
- FIF_OTHER_BSS |
- FIF_BCN_PRBRESP_PROMISC;
-
- changed_flags = local->filter_flags ^ new_flags;
-
- /* be a bit nasty */
- new_flags |= (1<<31);
-
- local->ops->configure_filter(local_to_hw(local),
- changed_flags, &new_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
-
- WARN_ON(new_flags & (1<<31));
-
- local->filter_flags = new_flags & ~(1<<31);
-}
-
-static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- return &(sdata->stats);
-}
-
-/* master interface */
-
-static int ieee80211_master_open(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- int res = -EOPNOTSUPP;
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(sdata, &local->interfaces, list) {
- if (sdata->dev != dev && netif_running(sdata->dev)) {
- res = 0;
- break;
- }
- }
- return res;
-}
-
-static int ieee80211_master_stop(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(sdata, &local->interfaces, list)
- if (sdata->dev != dev && netif_running(sdata->dev))
- dev_close(sdata->dev);
-
- return 0;
-}
-
-static void ieee80211_master_set_multicast_list(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- ieee80211_configure_filter(local);
-}
-
-/* regular interfaces */
-
-static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
-{
- /* FIX: what would be proper limits for MTU?
- * This interface uses 802.3 frames. */
- if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
- printk(KERN_WARNING "%s: invalid MTU %d\n",
- dev->name, new_mtu);
- return -EINVAL;
- }
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- dev->mtu = new_mtu;
- return 0;
-}
-
-static inline int identical_mac_addr_allowed(int type1, int type2)
-{
- return (type1 == IEEE80211_IF_TYPE_MNTR ||
- type2 == IEEE80211_IF_TYPE_MNTR ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_WDS) ||
- (type1 == IEEE80211_IF_TYPE_WDS &&
- (type2 == IEEE80211_IF_TYPE_WDS ||
- type2 == IEEE80211_IF_TYPE_AP)) ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_VLAN) ||
- (type1 == IEEE80211_IF_TYPE_VLAN &&
- (type2 == IEEE80211_IF_TYPE_AP ||
- type2 == IEEE80211_IF_TYPE_VLAN)));
-}
-
-static int ieee80211_open(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata, *nsdata;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_init_conf conf;
- int res;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(nsdata, &local->interfaces, list) {
- struct net_device *ndev = nsdata->dev;
-
- if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
- compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0) {
- /*
- * check whether it may have the same address
- */
- if (!identical_mac_addr_allowed(sdata->type,
- nsdata->type))
- return -ENOTUNIQ;
-
- /*
- * can only add VLANs to enabled APs
- */
- if (sdata->type == IEEE80211_IF_TYPE_VLAN &&
- nsdata->type == IEEE80211_IF_TYPE_AP &&
- netif_running(nsdata->dev))
- sdata->u.vlan.ap = nsdata;
- }
- }
-
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_WDS:
- if (is_zero_ether_addr(sdata->u.wds.remote_addr))
- return -ENOLINK;
- break;
- case IEEE80211_IF_TYPE_VLAN:
- if (!sdata->u.vlan.ap)
- return -ENOLINK;
- break;
- case IEEE80211_IF_TYPE_AP:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_IBSS:
- /* no special treatment */
- break;
- case IEEE80211_IF_TYPE_INVALID:
- /* cannot happen */
- WARN_ON(1);
- break;
- }
-
- if (local->open_count == 0) {
- res = 0;
- if (local->ops->start)
- res = local->ops->start(local_to_hw(local));
- if (res)
- return res;
- ieee80211_hw_config(local);
- }
-
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_VLAN:
- list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans);
- /* no need to tell driver */
- break;
- case IEEE80211_IF_TYPE_MNTR:
- /* must be before the call to ieee80211_configure_filter */
- local->monitors++;
- if (local->monitors == 1) {
- netif_tx_lock_bh(local->mdev);
- ieee80211_configure_filter(local);
- netif_tx_unlock_bh(local->mdev);
-
- local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
- }
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- /* fall through */
- default:
- conf.if_id = dev->ifindex;
- conf.type = sdata->type;
- conf.mac_addr = dev->dev_addr;
- res = local->ops->add_interface(local_to_hw(local), &conf);
- if (res && !local->open_count && local->ops->stop)
- local->ops->stop(local_to_hw(local));
- if (res)
- return res;
-
- ieee80211_if_config(dev);
- ieee80211_reset_erp_info(dev);
- ieee80211_enable_keys(sdata);
-
- if (sdata->type == IEEE80211_IF_TYPE_STA &&
- !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
- netif_carrier_off(dev);
- else
- netif_carrier_on(dev);
- }
-
- if (local->open_count == 0) {
- res = dev_open(local->mdev);
- WARN_ON(res);
- tasklet_enable(&local->tx_pending_tasklet);
- tasklet_enable(&local->tasklet);
- }
-
- /*
- * set_multicast_list will be invoked by the networking core
- * which will check whether any increments here were done in
- * error and sync them down to the hardware as filter flags.
- */
- if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
- atomic_inc(&local->iff_allmultis);
-
- if (sdata->flags & IEEE80211_SDATA_PROMISC)
- atomic_inc(&local->iff_promiscs);
-
- local->open_count++;
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static int ieee80211_stop(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_init_conf conf;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- netif_stop_queue(dev);
-
- /*
- * Don't count this interface for promisc/allmulti while it
- * is down. dev_mc_unsync() will invoke set_multicast_list
- * on the master interface which will sync these down to the
- * hardware as filter flags.
- */
- if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
- atomic_dec(&local->iff_allmultis);
-
- if (sdata->flags & IEEE80211_SDATA_PROMISC)
- atomic_dec(&local->iff_promiscs);
-
- dev_mc_unsync(local->mdev, dev);
-
- /* down all dependent devices, that is VLANs */
- if (sdata->type == IEEE80211_IF_TYPE_AP) {
- struct ieee80211_sub_if_data *vlan, *tmp;
-
- list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans,
- u.vlan.list)
- dev_close(vlan->dev);
- WARN_ON(!list_empty(&sdata->u.ap.vlans));
- }
-
- local->open_count--;
-
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_VLAN:
- list_del(&sdata->u.vlan.list);
- sdata->u.vlan.ap = NULL;
- /* no need to tell driver */
- break;
- case IEEE80211_IF_TYPE_MNTR:
- local->monitors--;
- if (local->monitors == 0) {
- netif_tx_lock_bh(local->mdev);
- ieee80211_configure_filter(local);
- netif_tx_unlock_bh(local->mdev);
-
- local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
- }
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- sdata->u.sta.state = IEEE80211_DISABLED;
- del_timer_sync(&sdata->u.sta.timer);
- /*
- * When we get here, the interface is marked down.
- * Call synchronize_rcu() to wait for the RX path
- * should it be using the interface and enqueuing
- * frames at this very time on another CPU.
- */
- synchronize_rcu();
- skb_queue_purge(&sdata->u.sta.skb_queue);
-
- if (local->scan_dev == sdata->dev) {
- if (!local->ops->hw_scan) {
- local->sta_sw_scanning = 0;
- cancel_delayed_work(&local->scan_work);
- } else
- local->sta_hw_scanning = 0;
- }
-
- flush_workqueue(local->hw.workqueue);
-
- sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
- kfree(sdata->u.sta.extra_ie);
- sdata->u.sta.extra_ie = NULL;
- sdata->u.sta.extra_ie_len = 0;
- /* fall through */
- default:
- conf.if_id = dev->ifindex;
- conf.type = sdata->type;
- conf.mac_addr = dev->dev_addr;
- /* disable all keys for as long as this netdev is down */
- ieee80211_disable_keys(sdata);
- local->ops->remove_interface(local_to_hw(local), &conf);
- }
-
- if (local->open_count == 0) {
- if (netif_running(local->mdev))
- dev_close(local->mdev);
-
- if (local->ops->stop)
- local->ops->stop(local_to_hw(local));
-
- tasklet_disable(&local->tx_pending_tasklet);
- tasklet_disable(&local->tasklet);
- }
-
- return 0;
-}
-
-static void ieee80211_set_multicast_list(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int allmulti, promisc, sdata_allmulti, sdata_promisc;
-
- allmulti = !!(dev->flags & IFF_ALLMULTI);
- promisc = !!(dev->flags & IFF_PROMISC);
- sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
- sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC);
-
- if (allmulti != sdata_allmulti) {
- if (dev->flags & IFF_ALLMULTI)
- atomic_inc(&local->iff_allmultis);
- else
- atomic_dec(&local->iff_allmultis);
- sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
- }
-
- if (promisc != sdata_promisc) {
- if (dev->flags & IFF_PROMISC)
- atomic_inc(&local->iff_promiscs);
- else
- atomic_dec(&local->iff_promiscs);
- sdata->flags ^= IEEE80211_SDATA_PROMISC;
- }
-
- dev_mc_sync(local->mdev, dev);
-}
-
-#if 0 /* Not in RHEL5 */
-static const struct header_ops ieee80211_header_ops = {
- .create = eth_header,
- .parse = header_parse_80211,
- .rebuild = eth_rebuild_header,
- .cache = eth_header_cache,
- .cache_update = eth_header_cache_update,
-};
-#endif
-
-/* Must not be called for mdev */
-void ieee80211_if_setup(struct net_device *dev)
-{
- ether_setup(dev);
- dev->hard_start_xmit = ieee80211_subif_start_xmit;
- dev->wireless_handlers = &ieee80211_iw_handler_def;
- dev->set_multicast_list = ieee80211_set_multicast_list;
- dev->change_mtu = ieee80211_change_mtu;
- dev->get_stats = ieee80211_get_stats;
- dev->open = ieee80211_open;
- dev->stop = ieee80211_stop;
- dev->destructor = ieee80211_if_free;
-}
-
-/* WDS specialties */
-
-int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sta_info *sta;
- DECLARE_MAC_BUF(mac);
-
- if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
- return 0;
-
- /* Create STA entry for the new peer */
- sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
- if (!sta)
- return -ENOMEM;
- sta_info_put(sta);
-
- /* Remove STA entry for the old peer */
- sta = sta_info_get(local, sdata->u.wds.remote_addr);
- if (sta) {
- sta_info_free(sta);
- sta_info_put(sta);
- } else {
- printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
- "peer %s\n",
- dev->name, print_mac(mac, sdata->u.wds.remote_addr));
- }
-
- /* Update WDS link data */
- memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
-
- return 0;
-}
-
-/* everything else */
-
-static int __ieee80211_if_config(struct net_device *dev,
- struct sk_buff *beacon,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_conf conf;
-
- if (!local->ops->config_interface || !netif_running(dev))
- return 0;
-
- memset(&conf, 0, sizeof(conf));
- conf.type = sdata->type;
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- conf.bssid = sdata->u.sta.bssid;
- conf.ssid = sdata->u.sta.ssid;
- conf.ssid_len = sdata->u.sta.ssid_len;
- } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
- conf.ssid = sdata->u.ap.ssid;
- conf.ssid_len = sdata->u.ap.ssid_len;
- conf.beacon = beacon;
- conf.beacon_control = control;
- }
- return local->ops->config_interface(local_to_hw(local),
- dev->ifindex, &conf);
-}
-
-int ieee80211_if_config(struct net_device *dev)
-{
- return __ieee80211_if_config(dev, NULL, NULL);
-}
-
-int ieee80211_if_config_beacon(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_control control;
- struct sk_buff *skb;
-
- if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
- return 0;
- skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
- if (!skb)
- return -ENOMEM;
- return __ieee80211_if_config(dev, skb, &control);
-}
-
-int ieee80211_hw_config(struct ieee80211_local *local)
-{
- struct ieee80211_hw_mode *mode;
- struct ieee80211_channel *chan;
- int ret = 0;
-
- if (local->sta_sw_scanning) {
- chan = local->scan_channel;
- mode = local->scan_hw_mode;
- } else {
- chan = local->oper_channel;
- mode = local->oper_hw_mode;
- }
-
- local->hw.conf.channel = chan->chan;
- local->hw.conf.channel_val = chan->val;
- if (!local->hw.conf.power_level) {
- local->hw.conf.power_level = chan->power_level;
- } else {
- local->hw.conf.power_level = min(chan->power_level,
- local->hw.conf.power_level);
- }
- local->hw.conf.freq = chan->freq;
- local->hw.conf.phymode = mode->mode;
- local->hw.conf.antenna_max = chan->antenna_max;
- local->hw.conf.chan = chan;
- local->hw.conf.mode = mode;
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
- "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
- local->hw.conf.phymode);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
-
- if (local->open_count)
- ret = local->ops->config(local_to_hw(local), &local->hw.conf);
-
- return ret;
-}
-
-/**
- * ieee80211_hw_config_ht should be used only after legacy configuration
- * has been determined, as ht configuration depends upon the hardware's
- * HT abilities for a _specific_ band.
- */
-int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
- struct ieee80211_ht_info *req_ht_cap,
- struct ieee80211_ht_bss_info *req_bss_cap)
-{
- struct ieee80211_conf *conf = &local->hw.conf;
- struct ieee80211_hw_mode *mode = conf->mode;
- int i;
-
- /* HT is not supported */
- if (!mode->ht_info.ht_supported) {
- conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
- return -EOPNOTSUPP;
- }
-
- /* disable HT */
- if (!enable_ht) {
- conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
- } else {
- conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
- conf->ht_conf.cap = req_ht_cap->cap & mode->ht_info.cap;
- conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
- conf->ht_conf.cap |=
- mode->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
- conf->ht_bss_conf.primary_channel =
- req_bss_cap->primary_channel;
- conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
- conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
- for (i = 0; i < SUPP_MCS_SET_LEN; i++)
- conf->ht_conf.supp_mcs_set[i] =
- mode->ht_info.supp_mcs_set[i] &
- req_ht_cap->supp_mcs_set[i];
-
- /* In STA mode, this gives us indication
- * to the AP's mode of operation */
- conf->ht_conf.ht_supported = 1;
- conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
- conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density;
- }
-
- local->ops->conf_ht(local_to_hw(local), &local->hw.conf);
-
- return 0;
-}
-
-void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (local->ops->erp_ie_changed)
- local->ops->erp_ie_changed(local_to_hw(local), changes,
- !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION),
- !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE));
-}
-
-void ieee80211_reset_erp_info(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION |
- IEEE80211_SDATA_SHORT_PREAMBLE);
- ieee80211_erp_info_change_notify(dev,
- IEEE80211_ERP_CHANGE_PROTECTION |
- IEEE80211_ERP_CHANGE_PREAMBLE);
-}
-
-void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_tx_status *saved;
- int tmp;
-
- skb->dev = local->mdev;
- saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
- if (unlikely(!saved)) {
- if (net_ratelimit())
- printk(KERN_WARNING "%s: Not enough memory, "
- "dropping tx status", skb->dev->name);
- /* should be dev_kfree_skb_irq, but due to this function being
- * named _irqsafe instead of just _irq we can't be sure that
- * people won't call it from non-irq contexts */
- dev_kfree_skb_any(skb);
- return;
- }
- memcpy(saved, status, sizeof(struct ieee80211_tx_status));
- /* copy pointer to saved status into skb->cb for use by tasklet */
- memcpy(skb->cb, &saved, sizeof(saved));
-
- skb->pkt_type = IEEE80211_TX_STATUS_MSG;
- skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
- &local->skb_queue : &local->skb_queue_unreliable, skb);
- tmp = skb_queue_len(&local->skb_queue) +
- skb_queue_len(&local->skb_queue_unreliable);
- while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
- (skb = skb_dequeue(&local->skb_queue_unreliable))) {
- memcpy(&saved, skb->cb, sizeof(saved));
- kfree(saved);
- dev_kfree_skb_irq(skb);
- tmp--;
- I802_DEBUG_INC(local->tx_status_drop);
- }
- tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
-
-static void ieee80211_tasklet_handler(unsigned long data)
-{
- struct ieee80211_local *local = (struct ieee80211_local *) data;
- struct sk_buff *skb;
- struct ieee80211_rx_status rx_status;
- struct ieee80211_tx_status *tx_status;
-
- while ((skb = skb_dequeue(&local->skb_queue)) ||
- (skb = skb_dequeue(&local->skb_queue_unreliable))) {
- switch (skb->pkt_type) {
- case IEEE80211_RX_MSG:
- /* status is in skb->cb */
- memcpy(&rx_status, skb->cb, sizeof(rx_status));
- /* Clear skb->type in order to not confuse kernel
- * netstack. */
- skb->pkt_type = 0;
- __ieee80211_rx(local_to_hw(local), skb, &rx_status);
- break;
- case IEEE80211_TX_STATUS_MSG:
- /* get pointer to saved status out of skb->cb */
- memcpy(&tx_status, skb->cb, sizeof(tx_status));
- skb->pkt_type = 0;
- ieee80211_tx_status(local_to_hw(local),
- skb, tx_status);
- kfree(tx_status);
- break;
- default: /* should never get here! */
- printk(KERN_ERR "%s: Unknown message type (%d)\n",
- wiphy_name(local->hw.wiphy), skb->pkt_type);
- dev_kfree_skb(skb);
- break;
- }
- }
-}
-
-/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
- * make a prepared TX frame (one that has been given to hw) to look like brand
- * new IEEE 802.11 frame that is ready to go through TX processing again.
- * Also, tx_packet_data in cb is restored from tx_control. */
-static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
- struct ieee80211_key *key,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control)
-{
- int hdrlen, iv_len, mic_len;
- struct ieee80211_tx_packet_data *pkt_data;
-
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- pkt_data->ifindex = control->ifindex;
- pkt_data->flags = 0;
- if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
- pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
- if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
- pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
- if (control->flags & IEEE80211_TXCTL_REQUEUE)
- pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
- pkt_data->queue = control->queue;
-
- hdrlen = ieee80211_get_hdrlen_from_skb(skb);
-
- if (!key)
- goto no_key;
-
- switch (key->conf.alg) {
- case ALG_WEP:
- iv_len = WEP_IV_LEN;
- mic_len = WEP_ICV_LEN;
- break;
- case ALG_TKIP:
- iv_len = TKIP_IV_LEN;
- mic_len = TKIP_ICV_LEN;
- break;
- case ALG_CCMP:
- iv_len = CCMP_HDR_LEN;
- mic_len = CCMP_MIC_LEN;
- break;
- default:
- goto no_key;
- }
-
- if (skb->len >= mic_len &&
- !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
- skb_trim(skb, skb->len - mic_len);
- if (skb->len >= iv_len && skb->len > hdrlen) {
- memmove(skb->data + iv_len, skb->data, hdrlen);
- skb_pull(skb, iv_len);
- }
-
-no_key:
- {
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u16 fc = le16_to_cpu(hdr->frame_control);
- if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
- fc &= ~IEEE80211_STYPE_QOS_DATA;
- hdr->frame_control = cpu_to_le16(fc);
- memmove(skb->data + 2, skb->data, hdrlen - 2);
- skb_pull(skb, 2);
- }
- }
-}
-
-void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct sk_buff *skb2;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_local *local = hw_to_local(hw);
- u16 frag, type;
- struct ieee80211_tx_status_rtap_hdr *rthdr;
- struct ieee80211_sub_if_data *sdata;
- int monitors;
-
- if (!status) {
- printk(KERN_ERR
- "%s: ieee80211_tx_status called with NULL status\n",
- wiphy_name(local->hw.wiphy));
- dev_kfree_skb(skb);
- return;
- }
-
- if (status->excessive_retries) {
- struct sta_info *sta;
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- if (sta->flags & WLAN_STA_PS) {
- /* The STA is in power save mode, so assume
- * that this TX packet failed because of that.
- */
- status->excessive_retries = 0;
- status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
- }
- sta_info_put(sta);
- }
- }
-
- if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
- struct sta_info *sta;
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- sta->tx_filtered_count++;
-
- /* Clear the TX filter mask for this STA when sending
- * the next packet. If the STA went to power save mode,
- * this will happen when it is waking up for the next
- * time. */
- sta->clear_dst_mask = 1;
-
- /* TODO: Is the WLAN_STA_PS flag always set here or is
- * the race between RX and TX status causing some
- * packets to be filtered out before 80211.o gets an
- * update for PS status? This seems to be the case, so
- * no changes are likely to be needed. */
- if (sta->flags & WLAN_STA_PS &&
- skb_queue_len(&sta->tx_filtered) <
- STA_MAX_TX_BUFFER) {
- ieee80211_remove_tx_extra(local, sta->key,
- skb,
- &status->control);
- skb_queue_tail(&sta->tx_filtered, skb);
- } else if (!(sta->flags & WLAN_STA_PS) &&
- !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
- /* Software retry the packet once */
- status->control.flags |= IEEE80211_TXCTL_REQUEUE;
- ieee80211_remove_tx_extra(local, sta->key,
- skb,
- &status->control);
- dev_queue_xmit(skb);
- } else {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: dropped TX "
- "filtered frame queue_len=%d "
- "PS=%d @%lu\n",
- wiphy_name(local->hw.wiphy),
- skb_queue_len(
- &sta->tx_filtered),
- !!(sta->flags & WLAN_STA_PS),
- jiffies);
- }
- dev_kfree_skb(skb);
- }
- sta_info_put(sta);
- return;
- }
- } else {
- /* FIXME: STUPID to call this with both local and local->mdev */
- rate_control_tx_status(local, local->mdev, skb, status);
- }
-
- ieee80211_led_tx(local, 0);
-
- /* SNMP counters
- * Fragments are passed to low-level drivers as separate skbs, so these
- * are actually fragments, not frames. Update frame counters only for
- * the first fragment of the frame. */
-
- frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
- type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
-
- if (status->flags & IEEE80211_TX_STATUS_ACK) {
- if (frag == 0) {
- local->dot11TransmittedFrameCount++;
- if (is_multicast_ether_addr(hdr->addr1))
- local->dot11MulticastTransmittedFrameCount++;
- if (status->retry_count > 0)
- local->dot11RetryCount++;
- if (status->retry_count > 1)
- local->dot11MultipleRetryCount++;
- }
-
- /* This counter shall be incremented for an acknowledged MPDU
- * with an individual address in the address 1 field or an MPDU
- * with a multicast address in the address 1 field of type Data
- * or Management. */
- if (!is_multicast_ether_addr(hdr->addr1) ||
- type == IEEE80211_FTYPE_DATA ||
- type == IEEE80211_FTYPE_MGMT)
- local->dot11TransmittedFragmentCount++;
- } else {
- if (frag == 0)
- local->dot11FailedCount++;
- }
-
- /* this was a transmitted frame, but now we want to reuse it */
- skb_orphan(skb);
-
- if (!local->monitors) {
- dev_kfree_skb(skb);
- return;
- }
-
- /* send frame to monitor interfaces now */
-
- if (skb_headroom(skb) < sizeof(*rthdr)) {
- printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
- dev_kfree_skb(skb);
- return;
- }
-
- rthdr = (struct ieee80211_tx_status_rtap_hdr*)
- skb_push(skb, sizeof(*rthdr));
-
- memset(rthdr, 0, sizeof(*rthdr));
- rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
- rthdr->hdr.it_present =
- cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
- (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
-
- if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
- !is_multicast_ether_addr(hdr->addr1))
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
-
- if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
- (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
- else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
-
- rthdr->data_retries = status->retry_count;
-
- rcu_read_lock();
- monitors = local->monitors;
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- /*
- * Using the monitors counter is possibly racy, but
- * if the value is wrong we simply either clone the skb
- * once too much or forget sending it to one monitor iface
- * The latter case isn't nice but fixing the race is much
- * more complicated.
- */
- if (!monitors || !skb)
- goto out;
-
- if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
- if (!netif_running(sdata->dev))
- continue;
- monitors--;
- if (monitors)
- skb2 = skb_clone(skb, GFP_ATOMIC);
- else
- skb2 = NULL;
- skb->dev = sdata->dev;
- /* XXX: is this sufficient for BPF? */
- skb_set_mac_header(skb, 0);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = htons(ETH_P_802_2);
- memset(skb->cb, 0, sizeof(skb->cb));
- netif_rx(skb);
- skb = skb2;
- }
- }
- out:
- rcu_read_unlock();
- if (skb)
- dev_kfree_skb(skb);
-}
-EXPORT_SYMBOL(ieee80211_tx_status);
-
-struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
- const struct ieee80211_ops *ops)
-{
- struct net_device *mdev;
- struct ieee80211_local *local;
- struct ieee80211_sub_if_data *sdata;
- int priv_size;
- struct wiphy *wiphy;
-
- /* Ensure 32-byte alignment of our private data and hw private data.
- * We use the wiphy priv data for both our ieee80211_local and for
- * the driver's private data
- *
- * In memory it'll be like this:
- *
- * +-------------------------+
- * | struct wiphy |
- * +-------------------------+
- * | struct ieee80211_local |
- * +-------------------------+
- * | driver's private data |
- * +-------------------------+
- *
- */
- priv_size = ((sizeof(struct ieee80211_local) +
- NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
- priv_data_len;
-
- wiphy = wiphy_new(&mac80211_config_ops, priv_size);
-
- if (!wiphy)
- return NULL;
-
- wiphy->privid = mac80211_wiphy_privid;
-
- local = wiphy_priv(wiphy);
- local->hw.wiphy = wiphy;
-
- local->hw.priv = (char *)local +
- ((sizeof(struct ieee80211_local) +
- NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
-
- BUG_ON(!ops->tx);
- BUG_ON(!ops->start);
- BUG_ON(!ops->stop);
- BUG_ON(!ops->config);
- BUG_ON(!ops->add_interface);
- BUG_ON(!ops->remove_interface);
- BUG_ON(!ops->configure_filter);
- local->ops = ops;
-
- /* for now, mdev needs sub_if_data :/ */
- mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
- "wmaster%d", ether_setup);
- if (!mdev) {
- wiphy_free(wiphy);
- return NULL;
- }
-
- sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
- mdev->ieee80211_ptr = &sdata->wdev;
- sdata->wdev.wiphy = wiphy;
-
- local->hw.queues = 1; /* default */
-
- local->mdev = mdev;
- local->rx_pre_handlers = ieee80211_rx_pre_handlers;
- local->rx_handlers = ieee80211_rx_handlers;
- local->tx_handlers = ieee80211_tx_handlers;
-
- local->bridge_packets = 1;
-
- local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
- local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
- local->short_retry_limit = 7;
- local->long_retry_limit = 4;
- local->hw.conf.radio_enabled = 1;
-
- local->enabled_modes = ~0;
-
- INIT_LIST_HEAD(&local->modes_list);
-
- INIT_LIST_HEAD(&local->interfaces);
-
- INIT_WORK(&local->scan_work, ieee80211_sta_scan_work, local);
- ieee80211_rx_bss_list_init(mdev);
-
- sta_info_init(local);
-
- mdev->hard_start_xmit = ieee80211_master_start_xmit;
- mdev->get_stats = ieee80211_get_stats;
- mdev->open = ieee80211_master_open;
- mdev->stop = ieee80211_master_stop;
- mdev->type = ARPHRD_IEEE80211;
-#if 0 /* Not in RHEL5 */
- mdev->header_ops = &ieee80211_header_ops;
-#else
- mdev->hard_header_parse = header_parse_80211;
-#endif
- mdev->set_multicast_list = ieee80211_master_set_multicast_list;
-
- sdata->type = IEEE80211_IF_TYPE_AP;
- sdata->dev = mdev;
- sdata->local = local;
- sdata->u.ap.force_unicast_rateidx = -1;
- sdata->u.ap.max_ratectrl_rateidx = -1;
- ieee80211_if_sdata_init(sdata);
- /* no RCU needed since we're still during init phase */
- list_add_tail(&sdata->list, &local->interfaces);
-
- tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
- (unsigned long)local);
- tasklet_disable(&local->tx_pending_tasklet);
-
- tasklet_init(&local->tasklet,
- ieee80211_tasklet_handler,
- (unsigned long) local);
- tasklet_disable(&local->tasklet);
-
- skb_queue_head_init(&local->skb_queue);
- skb_queue_head_init(&local->skb_queue_unreliable);
-
- return local_to_hw(local);
-}
-EXPORT_SYMBOL(ieee80211_alloc_hw);
-
-int ieee80211_register_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- const char *name;
- int result;
-
- result = wiphy_register(local->hw.wiphy);
- if (result < 0)
- return result;
-
- name = wiphy_dev(local->hw.wiphy)->driver->name;
- local->hw.workqueue = create_singlethread_workqueue(name);
- if (!local->hw.workqueue) {
- result = -ENOMEM;
- goto fail_workqueue;
- }
-
- /*
- * The hardware needs headroom for sending the frame,
- * and we need some headroom for passing the frame to monitor
- * interfaces, but never both at the same time.
- */
- local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
- sizeof(struct ieee80211_tx_status_rtap_hdr));
-
- debugfs_hw_add(local);
-
- local->hw.conf.beacon_int = 1000;
-
- local->wstats_flags |= local->hw.max_rssi ?
- IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
- local->wstats_flags |= local->hw.max_signal ?
- IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
- local->wstats_flags |= local->hw.max_noise ?
- IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
- if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
- local->wstats_flags |= IW_QUAL_DBM;
-
- result = sta_info_start(local);
- if (result < 0)
- goto fail_sta_info;
-
- rtnl_lock();
- result = dev_alloc_name(local->mdev, local->mdev->name);
- if (result < 0)
- goto fail_dev;
-
- memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
- SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
-
- result = register_netdevice(local->mdev);
- if (result < 0)
- goto fail_dev;
-
- ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
- ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP);
-
- result = ieee80211_init_rate_ctrl_alg(local,
- hw->rate_control_algorithm);
- if (result < 0) {
- printk(KERN_DEBUG "%s: Failed to initialize rate control "
- "algorithm\n", wiphy_name(local->hw.wiphy));
- goto fail_rate;
- }
-
- result = ieee80211_wep_init(local);
-
- if (result < 0) {
- printk(KERN_DEBUG "%s: Failed to initialize wep\n",
- wiphy_name(local->hw.wiphy));
- goto fail_wep;
- }
-
- ieee80211_install_qdisc(local->mdev);
-
- /* add one default STA interface */
- result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
- IEEE80211_IF_TYPE_STA);
- if (result)
- printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
- wiphy_name(local->hw.wiphy));
-
- local->reg_state = IEEE80211_DEV_REGISTERED;
- rtnl_unlock();
-
- ieee80211_led_init(local);
-
- return 0;
-
-fail_wep:
- rate_control_deinitialize(local);
-fail_rate:
- ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
- unregister_netdevice(local->mdev);
-fail_dev:
- rtnl_unlock();
- sta_info_stop(local);
-fail_sta_info:
- debugfs_hw_del(local);
- destroy_workqueue(local->hw.workqueue);
-fail_workqueue:
- wiphy_unregister(local->hw.wiphy);
- return result;
-}
-EXPORT_SYMBOL(ieee80211_register_hw);
-
-int ieee80211_register_hwmode(struct ieee80211_hw *hw,
- struct ieee80211_hw_mode *mode)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_rate *rate;
- int i;
-
- INIT_LIST_HEAD(&mode->list);
- list_add_tail(&mode->list, &local->modes_list);
-
- local->hw_modes |= (1 << mode->mode);
- for (i = 0; i < mode->num_rates; i++) {
- rate = &(mode->rates[i]);
- rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
- }
- ieee80211_prepare_rates(local, mode);
-
- if (!local->oper_hw_mode) {
- /* Default to this mode */
- local->hw.conf.phymode = mode->mode;
- local->oper_hw_mode = local->scan_hw_mode = mode;
- local->oper_channel = local->scan_channel = &mode->channels[0];
- local->hw.conf.mode = local->oper_hw_mode;
- local->hw.conf.chan = local->oper_channel;
- }
-
- if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED))
- ieee80211_set_default_regdomain(mode);
-
- return 0;
-}
-EXPORT_SYMBOL(ieee80211_register_hwmode);
-
-void ieee80211_unregister_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata, *tmp;
- int i;
-
- tasklet_kill(&local->tx_pending_tasklet);
- tasklet_kill(&local->tasklet);
-
- rtnl_lock();
-
- BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
-
- local->reg_state = IEEE80211_DEV_UNREGISTERED;
-
- /*
- * At this point, interface list manipulations are fine
- * because the driver cannot be handing us frames any
- * more and the tasklet is killed.
- */
-
- /*
- * First, we remove all non-master interfaces. Do this because they
- * may have bss pointer dependency on the master, and when we free
- * the master these would be freed as well, breaking our list
- * iteration completely.
- */
- list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
- if (sdata->dev == local->mdev)
- continue;
- list_del(&sdata->list);
- __ieee80211_if_del(local, sdata);
- }
-
- /* then, finally, remove the master interface */
- __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev));
-
- rtnl_unlock();
-
- ieee80211_rx_bss_list_deinit(local->mdev);
- ieee80211_clear_tx_pending(local);
- sta_info_stop(local);
- rate_control_deinitialize(local);
- debugfs_hw_del(local);
-
- for (i = 0; i < NUM_IEEE80211_MODES; i++) {
- kfree(local->supp_rates[i]);
- kfree(local->basic_rates[i]);
- }
-
- if (skb_queue_len(&local->skb_queue)
- || skb_queue_len(&local->skb_queue_unreliable))
- printk(KERN_WARNING "%s: skb_queue not empty\n",
- wiphy_name(local->hw.wiphy));
- skb_queue_purge(&local->skb_queue);
- skb_queue_purge(&local->skb_queue_unreliable);
-
- destroy_workqueue(local->hw.workqueue);
- wiphy_unregister(local->hw.wiphy);
- ieee80211_wep_free(local);
- ieee80211_led_exit(local);
-}
-EXPORT_SYMBOL(ieee80211_unregister_hw);
-
-void ieee80211_free_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- ieee80211_if_free(local->mdev);
- wiphy_free(local->hw.wiphy);
-}
-EXPORT_SYMBOL(ieee80211_free_hw);
-
-static int __init ieee80211_init(void)
-{
- struct sk_buff *skb;
- int ret;
-
- BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
-
-#ifdef CONFIG_MAC80211_RCSIMPLE
- ret = ieee80211_rate_control_register(&mac80211_rcsimple);
- if (ret)
- return ret;
-#endif
-
- ret = ieee80211_wme_register();
- if (ret) {
-#ifdef CONFIG_MAC80211_RCSIMPLE
- ieee80211_rate_control_unregister(&mac80211_rcsimple);
-#endif
- printk(KERN_DEBUG "ieee80211_init: failed to "
- "initialize WME (err=%d)\n", ret);
- return ret;
- }
-
- ieee80211_debugfs_netdev_init();
- ieee80211_regdomain_init();
-
- return 0;
-}
-
-static void __exit ieee80211_exit(void)
-{
-#ifdef CONFIG_MAC80211_RCSIMPLE
- ieee80211_rate_control_unregister(&mac80211_rcsimple);
-#endif
-
- ieee80211_wme_unregister();
- ieee80211_debugfs_netdev_exit();
-}
-
-
-subsys_initcall(ieee80211_init);
-module_exit(ieee80211_exit);
-
-MODULE_DESCRIPTION("IEEE 802.11 subsystem");
-MODULE_LICENSE("GPL");
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index cb4f3bb..83d9927 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -23,7 +23,7 @@
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <net/wireless.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "sta_info.h"
/* ieee80211.o internal definitions, etc. These are not included into
@@ -35,9 +35,9 @@
#define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
-struct ieee80211_local;
+#define IEEE80211_FC(type, subtype) cpu_to_le16(type | subtype)
-#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
+struct ieee80211_local;
/* Maximum number of broadcast/multicast frames to buffer when some of the
* associated stations are using power saving. */
@@ -73,14 +73,14 @@ struct ieee80211_fragment_entry {
struct ieee80211_sta_bss {
struct list_head list;
struct ieee80211_sta_bss *hnext;
+ size_t ssid_len;
+
atomic_t users;
u8 bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
- size_t ssid_len;
u16 capability; /* host byte order */
- int hw_mode;
- int channel;
+ enum ieee80211_band band;
int freq;
int rssi, signal, noise;
u8 *wpa_ie;
@@ -91,13 +91,18 @@ struct ieee80211_sta_bss {
size_t wmm_ie_len;
u8 *ht_ie;
size_t ht_ie_len;
+#ifdef CONFIG_MAC80211_MESH
+ u8 *mesh_id;
+ size_t mesh_id_len;
+ u8 *mesh_cfg;
+#endif
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
- int beacon_int;
u64 timestamp;
+ int beacon_int;
- int probe_resp;
+ bool probe_resp;
unsigned long last_update;
/* during assocation, we save an ERP value from a probe response so
@@ -108,62 +113,106 @@ struct ieee80211_sta_bss {
u8 erp_value;
};
+static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
+{
+#ifdef CONFIG_MAC80211_MESH
+ return bss->mesh_cfg;
+#endif
+ return NULL;
+}
-typedef enum {
- TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
-} ieee80211_txrx_result;
+static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss)
+{
+#ifdef CONFIG_MAC80211_MESH
+ return bss->mesh_id;
+#endif
+ return NULL;
+}
-/* flags used in struct ieee80211_txrx_data.flags */
-/* whether the MSDU was fragmented */
-#define IEEE80211_TXRXD_FRAGMENTED BIT(0)
-#define IEEE80211_TXRXD_TXUNICAST BIT(1)
-#define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
-#define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
-#define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
-/* frame is destined to interface currently processed (incl. multicast frames) */
-#define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
-#define IEEE80211_TXRXD_TX_INJECTED BIT(6)
-#define IEEE80211_TXRXD_RX_AMSDU BIT(7)
-struct ieee80211_txrx_data {
+static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss)
+{
+#ifdef CONFIG_MAC80211_MESH
+ return bss->mesh_id_len;
+#endif
+ return 0;
+}
+
+
+typedef unsigned __bitwise__ ieee80211_tx_result;
+#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
+#define TX_DROP ((__force ieee80211_tx_result) 1u)
+#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
+
+#define IEEE80211_TX_FRAGMENTED BIT(0)
+#define IEEE80211_TX_UNICAST BIT(1)
+#define IEEE80211_TX_PS_BUFFERED BIT(2)
+#define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
+#define IEEE80211_TX_INJECTED BIT(4)
+
+struct ieee80211_tx_data {
struct sk_buff *skb;
struct net_device *dev;
struct ieee80211_local *local;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
+ struct ieee80211_key *key;
+
+ struct ieee80211_tx_control *control;
+ struct ieee80211_channel *channel;
+ struct ieee80211_rate *rate;
+ /* use this rate (if set) for last fragment; rate can
+ * be set to lower rate for the first fragments, e.g.,
+ * when using CTS protection with IEEE 802.11g. */
+ struct ieee80211_rate *last_frag_rate;
+
+ /* Extra fragments (in addition to the first fragment
+ * in skb) */
+ struct sk_buff **extra_frag;
+ int num_extra_frag;
+
u16 fc, ethertype;
+ unsigned int flags;
+};
+
+
+typedef unsigned __bitwise__ ieee80211_rx_result;
+#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
+#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
+#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
+#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
+
+#define IEEE80211_RX_IN_SCAN BIT(0)
+/* frame is destined to interface currently processed (incl. multicast frames) */
+#define IEEE80211_RX_RA_MATCH BIT(1)
+#define IEEE80211_RX_AMSDU BIT(2)
+#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
+#define IEEE80211_RX_FRAGMENTED BIT(4)
+
+struct ieee80211_rx_data {
+ struct sk_buff *skb;
+ struct net_device *dev;
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
struct ieee80211_key *key;
+ struct ieee80211_rx_status *status;
+ struct ieee80211_rate *rate;
+
+ u16 fc, ethertype;
unsigned int flags;
- union {
- struct {
- struct ieee80211_tx_control *control;
- struct ieee80211_hw_mode *mode;
- struct ieee80211_rate *rate;
- /* use this rate (if set) for last fragment; rate can
- * be set to lower rate for the first fragments, e.g.,
- * when using CTS protection with IEEE 802.11g. */
- struct ieee80211_rate *last_frag_rate;
- int last_frag_hwrate;
-
- /* Extra fragments (in addition to the first fragment
- * in skb) */
- int num_extra_frag;
- struct sk_buff **extra_frag;
- } tx;
- struct {
- struct ieee80211_rx_status *status;
- int sent_ps_buffered;
- int queue;
- int load;
- u32 tkip_iv32;
- u16 tkip_iv16;
- } rx;
- } u;
+ int sent_ps_buffered;
+ int queue;
+ int load;
+ u32 tkip_iv32;
+ u16 tkip_iv16;
};
/* flags used in struct ieee80211_tx_packet_data.flags */
#define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
#define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
#define IEEE80211_TXPD_REQUEUE BIT(2)
+#define IEEE80211_TXPD_EAPOL_FRAME BIT(3)
+#define IEEE80211_TXPD_AMPDU BIT(4)
/* Stored in sk_buff->cb */
struct ieee80211_tx_packet_data {
int ifindex;
@@ -175,23 +224,20 @@ struct ieee80211_tx_packet_data {
struct ieee80211_tx_stored_packet {
struct ieee80211_tx_control control;
struct sk_buff *skb;
- int num_extra_frag;
struct sk_buff **extra_frag;
- int last_frag_rateidx;
- int last_frag_hwrate;
struct ieee80211_rate *last_frag_rate;
+ int num_extra_frag;
unsigned int last_frag_rate_ctrl_probe;
};
-typedef ieee80211_txrx_result (*ieee80211_tx_handler)
-(struct ieee80211_txrx_data *tx);
-
-typedef ieee80211_txrx_result (*ieee80211_rx_handler)
-(struct ieee80211_txrx_data *rx);
+struct beacon_data {
+ u8 *head, *tail;
+ int head_len, tail_len;
+ int dtim_period;
+};
struct ieee80211_if_ap {
- u8 *beacon_head, *beacon_tail;
- int beacon_head_len, beacon_tail_len;
+ struct beacon_data *beacon;
struct list_head vlans;
@@ -200,19 +246,19 @@ struct ieee80211_if_ap {
/* yes, this looks ugly, but guarantees that we can later use
* bitmap_empty :)
- * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
+ * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
- atomic_t num_sta_ps; /* number of stations in PS mode */
struct sk_buff_head ps_bc_buf;
- int dtim_period, dtim_count;
+ atomic_t num_sta_ps; /* number of stations in PS mode */
+ int dtim_count;
int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
int max_ratectrl_rateidx; /* max TX rateidx for rate control */
int num_beacons; /* number of TXed beacon frames for this BSS */
};
struct ieee80211_if_wds {
- u8 remote_addr[ETH_ALEN];
struct sta_info *sta;
+ u8 remote_addr[ETH_ALEN];
};
struct ieee80211_if_vlan {
@@ -220,6 +266,41 @@ struct ieee80211_if_vlan {
struct list_head list;
};
+struct mesh_stats {
+ __u32 fwded_frames; /* Mesh forwarded frames */
+ __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
+ __u32 dropped_frames_no_route; /* Not transmitted, no route found */
+ atomic_t estab_plinks;
+};
+
+#define PREQ_Q_F_START 0x1
+#define PREQ_Q_F_REFRESH 0x2
+struct mesh_preq_queue {
+ struct list_head list;
+ u8 dst[ETH_ALEN];
+ u8 flags;
+};
+
+struct mesh_config {
+ /* Timeouts in ms */
+ /* Mesh plink management parameters */
+ u16 dot11MeshRetryTimeout;
+ u16 dot11MeshConfirmTimeout;
+ u16 dot11MeshHoldingTimeout;
+ u16 dot11MeshMaxPeerLinks;
+ u8 dot11MeshMaxRetries;
+ u8 dot11MeshTTL;
+ bool auto_open_plinks;
+ /* HWMP parameters */
+ u8 dot11MeshHWMPmaxPREQretries;
+ u32 path_refresh_time;
+ u16 min_discovery_timeout;
+ u32 dot11MeshHWMPactivePathTimeout;
+ u16 dot11MeshHWMPpreqMinInterval;
+ u16 dot11MeshHWMPnetDiameterTraversalTime;
+};
+
+
/* flags used in struct ieee80211_if_sta.flags */
#define IEEE80211_STA_SSID_SET BIT(0)
#define IEEE80211_STA_BSSID_SET BIT(1)
@@ -235,18 +316,47 @@ struct ieee80211_if_vlan {
#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
struct ieee80211_if_sta {
- enum {
- IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
- IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
- IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
- } state;
struct timer_list timer;
struct work_struct work;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
+ enum {
+ IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
+ IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
+ IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED,
+ IEEE80211_MESH_UP
+ } state;
size_t ssid_len;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
+#ifdef CONFIG_MAC80211_MESH
+ struct timer_list mesh_path_timer;
+ u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
+ size_t mesh_id_len;
+ /* Active Path Selection Protocol Identifier */
+ u8 mesh_pp_id[4];
+ /* Active Path Selection Metric Identifier */
+ u8 mesh_pm_id[4];
+ /* Congestion Control Mode Identifier */
+ u8 mesh_cc_id[4];
+ /* Local mesh Destination Sequence Number */
+ u32 dsn;
+ /* Last used PREQ ID */
+ u32 preq_id;
+ atomic_t mpaths;
+ /* Timestamp of last DSN update */
+ unsigned long last_dsn_update;
+ /* Timestamp of last DSN sent */
+ unsigned long last_preq;
+ struct mesh_rmc *rmc;
+ spinlock_t mesh_preq_queue_lock;
+ struct mesh_preq_queue preq_queue;
+ int preq_queue_len;
+ struct mesh_stats mshstats;
+ struct mesh_config mshcfg;
+ u32 mesh_seqnum;
+ bool accepting_plinks;
+#endif
u16 aid;
u16 ap_capab, capab;
u8 *extra_ie; /* to be added to the end of AssocReq */
@@ -256,16 +366,18 @@ struct ieee80211_if_sta {
u8 *assocreq_ies, *assocresp_ies;
size_t assocreq_ies_len, assocresp_ies_len;
+ struct sk_buff_head skb_queue;
+
int auth_tries, assoc_tries;
+ unsigned long request;
+
+ unsigned long last_probe;
+
unsigned int flags;
#define IEEE80211_STA_REQ_SCAN 0
#define IEEE80211_STA_REQ_AUTH 1
#define IEEE80211_STA_REQ_RUN 2
- unsigned long request;
- struct sk_buff_head skb_queue;
-
- unsigned long last_probe;
#define IEEE80211_AUTH_ALG_OPEN BIT(0)
#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
@@ -276,24 +388,36 @@ struct ieee80211_if_sta {
unsigned long ibss_join_req;
struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
- u32 supp_rates_bits;
+ u32 supp_rates_bits[IEEE80211_NUM_BANDS];
int wmm_last_param_set;
+ int num_beacons; /* number of TXed beacon frames by this STA */
};
+static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
+ u8 mesh_id_len, u8 *mesh_id)
+{
+#ifdef CONFIG_MAC80211_MESH
+ ifsta->mesh_id_len = mesh_id_len;
+ memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
+#endif
+}
+
+#ifdef CONFIG_MAC80211_MESH
+#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
+ do { (sta)->mshstats.name++; } while (0)
+#else
+#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
+ do { } while (0)
+#endif
/* flags used in struct ieee80211_sub_if_data.flags */
#define IEEE80211_SDATA_ALLMULTI BIT(0)
#define IEEE80211_SDATA_PROMISC BIT(1)
-#define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */
-/* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon
- * generator reports that there are no present stations that cannot support short
- * preambles */
-#define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3)
-#define IEEE80211_SDATA_USERSPACE_MLME BIT(4)
+#define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
+#define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
struct ieee80211_sub_if_data {
struct list_head list;
- enum ieee80211_if_types type;
struct wireless_dev wdev;
@@ -307,11 +431,11 @@ struct ieee80211_sub_if_data {
struct net_device_stats stats;
int drop_unencrypted;
- int eapol; /* 0 = process EAPOL frames as normal data frames,
- * 1 = send EAPOL frames through wlan#ap to hostapd
- * (default) */
- int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
- * port */
+
+ /*
+ * basic rates of this AP or the AP we're associated to
+ */
+ u64 basic_rates;
u16 sequence;
@@ -323,6 +447,15 @@ struct ieee80211_sub_if_data {
struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
struct ieee80211_key *default_key;
+ /*
+ * BSS configuration for this interface.
+ *
+ * FIXME: I feel bad putting this here when we already have a
+ * bss pointer, but the bss pointer is just wrong when
+ * you have multiple virtual STA mode interfaces...
+ * This needs to be fixed.
+ */
+ struct ieee80211_bss_conf bss_conf;
struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
union {
@@ -330,6 +463,7 @@ struct ieee80211_sub_if_data {
struct ieee80211_if_wds wds;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_sta sta;
+ u32 mntr_flags;
} u;
int channel_use;
int channel_use_raw;
@@ -340,8 +474,6 @@ struct ieee80211_sub_if_data {
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
struct dentry *state;
struct dentry *bssid;
struct dentry *prev_bssid;
@@ -356,48 +488,79 @@ struct ieee80211_sub_if_data {
struct dentry *auth_alg;
struct dentry *auth_transaction;
struct dentry *flags;
+ struct dentry *num_beacons_sta;
} sta;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
struct dentry *num_sta_ps;
- struct dentry *dtim_period;
struct dentry *dtim_count;
struct dentry *num_beacons;
struct dentry *force_unicast_rateidx;
struct dentry *max_ratectrl_rateidx;
struct dentry *num_buffered_multicast;
- struct dentry *beacon_head_len;
- struct dentry *beacon_tail_len;
} ap;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
struct dentry *peer;
} wds;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
} vlan;
struct {
struct dentry *mode;
} monitor;
struct dentry *default_key;
} debugfs;
+
+#ifdef CONFIG_MAC80211_MESH
+ struct dentry *mesh_stats_dir;
+ struct {
+ struct dentry *fwded_frames;
+ struct dentry *dropped_frames_ttl;
+ struct dentry *dropped_frames_no_route;
+ struct dentry *estab_plinks;
+ struct timer_list mesh_path_timer;
+ } mesh_stats;
+
+ struct dentry *mesh_config_dir;
+ struct {
+ struct dentry *dot11MeshRetryTimeout;
+ struct dentry *dot11MeshConfirmTimeout;
+ struct dentry *dot11MeshHoldingTimeout;
+ struct dentry *dot11MeshMaxRetries;
+ struct dentry *dot11MeshTTL;
+ struct dentry *auto_open_plinks;
+ struct dentry *dot11MeshMaxPeerLinks;
+ struct dentry *dot11MeshHWMPactivePathTimeout;
+ struct dentry *dot11MeshHWMPpreqMinInterval;
+ struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
+ struct dentry *dot11MeshHWMPmaxPREQretries;
+ struct dentry *path_refresh_time;
+ struct dentry *min_discovery_timeout;
+ } mesh_config;
+#endif
+
#endif
+ /* must be last, dynamically sized area in this! */
+ struct ieee80211_vif vif;
};
+static inline
+struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
+{
+ return container_of(p, struct ieee80211_sub_if_data, vif);
+}
+
#define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
+ IEEE80211_DELBA_MSG = 3,
+ IEEE80211_ADDBA_MSG = 4,
};
struct ieee80211_local {
@@ -408,15 +571,15 @@ struct ieee80211_local {
const struct ieee80211_ops *ops;
- /* List of registered struct ieee80211_hw_mode */
- struct list_head modes_list;
-
struct net_device *mdev; /* wmaster# - "master" 802.11 device */
int open_count;
- int monitors;
+ int monitors, cooked_mntrs;
+ /* number of interfaces with corresponding FIF_ flags */
+ int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
unsigned int filter_flags; /* FIF_* */
struct iw_statistics wstats;
u8 wstats_flags;
+ bool tim_in_locked_section; /* see ieee80211_beacon_get() */
int tx_headroom; /* required headroom for hardware/radiotap */
enum {
@@ -434,15 +597,22 @@ struct ieee80211_local {
struct sk_buff_head skb_queue;
struct sk_buff_head skb_queue_unreliable;
- /* Station data structures */
- rwlock_t sta_lock; /* protects STA data structures */
- int num_sta; /* number of stations in sta_list */
+ /* Station data */
+ /*
+ * The lock only protects the list, hash, timer and counter
+ * against manipulation, reads are done in RCU. Additionally,
+ * the lock protects each BSS's TIM bitmap.
+ */
+ spinlock_t sta_lock;
+ unsigned long num_sta;
struct list_head sta_list;
+ struct list_head sta_flush_list;
+ struct work_struct sta_flush_work;
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
- unsigned long state[NUM_TX_DATA_QUEUES];
- struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
+ unsigned long state[NUM_TX_DATA_QUEUES_AMPDU];
+ struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES_AMPDU];
struct tasklet_struct tx_pending_tasklet;
/* number of interfaces with corresponding IFF_ flags */
@@ -450,11 +620,6 @@ struct ieee80211_local {
struct rate_control_ref *rate_ctrl;
- /* Supported and basic rate filters for different modes. These are
- * pointers to -1 terminated lists and rates in 100 kbps units. */
- int *supp_rates[NUM_IEEE80211_MODES];
- int *basic_rates[NUM_IEEE80211_MODES];
-
int rts_threshold;
int fragmentation_threshold;
int short_retry_limit; /* dot11ShortRetryLimit */
@@ -468,21 +633,25 @@ struct ieee80211_local {
* deliver multicast frames both back to wireless
* media and to the local net stack */
- ieee80211_rx_handler *rx_pre_handlers;
- ieee80211_rx_handler *rx_handlers;
- ieee80211_tx_handler *tx_handlers;
-
struct list_head interfaces;
+ /*
+ * Key lock, protects sdata's key_list and sta_info's
+ * key pointers (write access, they're RCU.)
+ */
+ spinlock_t key_lock;
+
+
bool sta_sw_scanning;
bool sta_hw_scanning;
int scan_channel_idx;
+ enum ieee80211_band scan_band;
+
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct work_struct scan_work;
struct net_device *scan_dev;
struct ieee80211_channel *oper_channel, *scan_channel;
- struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
struct list_head sta_bss_list;
@@ -504,8 +673,9 @@ struct ieee80211_local {
#ifdef CONFIG_MAC80211_LEDS
int tx_led_counter, rx_led_counter;
- struct led_trigger *tx_led, *rx_led, *assoc_led;
- char tx_led_name[32], rx_led_name[32], assoc_led_name[32];
+ struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
+ char tx_led_name[32], rx_led_name[32],
+ assoc_led_name[32], radio_led_name[32];
#endif
u32 channel_use;
@@ -550,14 +720,8 @@ struct ieee80211_local {
int wifi_wme_noack_test;
unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
- unsigned int enabled_modes; /* bitfield of allowed modes;
- * (1 << MODE_*) */
- unsigned int hw_modes; /* bitfield of supported hardware modes;
- * (1 << MODE_*) */
-
#ifdef CONFIG_MAC80211_DEBUGFS
struct local_debugfsdentries {
- struct dentry *channel;
struct dentry *frequency;
struct dentry *antenna_sel_tx;
struct dentry *antenna_sel_rx;
@@ -567,9 +731,7 @@ struct ieee80211_local {
struct dentry *short_retry_limit;
struct dentry *long_retry_limit;
struct dentry *total_ps_buffered;
- struct dentry *mode;
struct dentry *wep_iv;
- struct dentry *modes;
struct dentry *statistics;
struct local_debugfsdentries_statsdentries {
struct dentry *transmitted_fragment_count;
@@ -617,6 +779,63 @@ struct ieee80211_local {
#endif
};
+/* this struct represents 802.11n's RA/TID combination */
+struct ieee80211_ra_tid {
+ u8 ra[ETH_ALEN];
+ u16 tid;
+};
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+ /* pointers to IEs */
+ u8 *ssid;
+ u8 *supp_rates;
+ u8 *fh_params;
+ u8 *ds_params;
+ u8 *cf_params;
+ u8 *tim;
+ u8 *ibss_params;
+ u8 *challenge;
+ u8 *wpa;
+ u8 *rsn;
+ u8 *erp_info;
+ u8 *ext_supp_rates;
+ u8 *wmm_info;
+ u8 *wmm_param;
+ u8 *ht_cap_elem;
+ u8 *ht_info_elem;
+ u8 *mesh_config;
+ u8 *mesh_id;
+ u8 *peer_link;
+ u8 *preq;
+ u8 *prep;
+ u8 *perr;
+
+ /* length of them, respectively */
+ u8 ssid_len;
+ u8 supp_rates_len;
+ u8 fh_params_len;
+ u8 ds_params_len;
+ u8 cf_params_len;
+ u8 tim_len;
+ u8 ibss_params_len;
+ u8 challenge_len;
+ u8 wpa_len;
+ u8 rsn_len;
+ u8 erp_info_len;
+ u8 ext_supp_rates_len;
+ u8 wmm_info_len;
+ u8 wmm_param_len;
+ u8 ht_cap_elem_len;
+ u8 ht_info_elem_len;
+ u8 mesh_config_len;
+ u8 mesh_id_len;
+ u8 peer_link_len;
+ u8 preq_len;
+ u8 prep_len;
+ u8 perr_len;
+};
+
static inline struct ieee80211_local *hw_to_local(
struct ieee80211_hw *hw)
{
@@ -640,57 +859,6 @@ struct sta_attribute {
ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
};
-static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
-{
- /*
- * This format has been mandated by the IEEE specifications,
- * so this line may not be changed to use the __set_bit() format.
- */
- bss->tim[aid / 8] |= (1 << (aid % 8));
-}
-
-static inline void bss_tim_set(struct ieee80211_local *local,
- struct ieee80211_if_ap *bss, u16 aid)
-{
- read_lock_bh(&local->sta_lock);
- __bss_tim_set(bss, aid);
- read_unlock_bh(&local->sta_lock);
-}
-
-static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
-{
- /*
- * This format has been mandated by the IEEE specifications,
- * so this line may not be changed to use the __clear_bit() format.
- */
- bss->tim[aid / 8] &= ~(1 << (aid % 8));
-}
-
-static inline void bss_tim_clear(struct ieee80211_local *local,
- struct ieee80211_if_ap *bss, u16 aid)
-{
- read_lock_bh(&local->sta_lock);
- __bss_tim_clear(bss, aid);
- read_unlock_bh(&local->sta_lock);
-}
-
-/**
- * ieee80211_is_erp_rate - Check if a rate is an ERP rate
- * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
- * @rate: Transmission rate to check, in 100 kbps
- *
- * Check if a given rate is an Extended Rate PHY (ERP) rate.
- */
-static inline int ieee80211_is_erp_rate(int phymode, int rate)
-{
- if (phymode == MODE_IEEE80211G) {
- if (rate != 10 && rate != 20 &&
- rate != 55 && rate != 110)
- return 1;
- }
- return 0;
-}
-
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
return compare_ether_addr(raddr, addr) == 0 ||
@@ -702,16 +870,11 @@ static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
int ieee80211_hw_config(struct ieee80211_local *local);
int ieee80211_if_config(struct net_device *dev);
int ieee80211_if_config_beacon(struct net_device *dev);
-void ieee80211_prepare_rates(struct ieee80211_local *local,
- struct ieee80211_hw_mode *mode);
-void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
-int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
+void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
void ieee80211_if_setup(struct net_device *dev);
-struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
- int phymode, int hwrate);
-int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
- struct ieee80211_ht_info *req_ht_cap,
- struct ieee80211_ht_bss_info *req_bss_cap);
+u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
+ struct ieee80211_ht_info *req_ht_cap,
+ struct ieee80211_ht_bss_info *req_bss_cap);
/* ieee80211_ioctl.c */
extern const struct iw_handler_def ieee80211_iw_handler_def;
@@ -737,9 +900,7 @@ extern const struct iw_handler_def ieee80211_iw_handler_def;
/* ieee80211_ioctl.c */
-int ieee80211_set_compression(struct ieee80211_local *local,
- struct net_device *dev, struct sta_info *sta);
-int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
+int ieee80211_set_freq(struct net_device *dev, int freq);
/* ieee80211_sta.c */
void ieee80211_sta_timer(unsigned long data);
void ieee80211_sta_work(void *ptr);
@@ -753,9 +914,9 @@ int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
void ieee80211_sta_req_auth(struct net_device *dev,
struct ieee80211_if_sta *ifsta);
int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
-ieee80211_txrx_result ieee80211_sta_rx_scan(struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status);
+ieee80211_rx_result ieee80211_sta_rx_scan(
+ struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status);
void ieee80211_rx_bss_list_init(struct net_device *dev);
void ieee80211_rx_bss_list_deinit(struct net_device *dev);
int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
@@ -764,16 +925,44 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
u8 *addr);
int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
-void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes);
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed);
void ieee80211_reset_erp_info(struct net_device *dev);
int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_ht_info *ht_info);
int ieee80211_ht_addt_info_ie_to_ht_bss_info(
struct ieee80211_ht_addt_info *ht_add_info_ie,
struct ieee80211_ht_bss_info *bss_info);
+void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
+ u16 tid, u8 dialog_token, u16 start_seq_num,
+ u16 agg_size, u16 timeout);
+void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
+ u16 initiator, u16 reason_code);
+
+void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
+ u16 tid, u16 initiator, u16 reason);
+void sta_rx_agg_session_timer_expired(unsigned long data);
+void sta_addba_resp_timer_expired(unsigned long data);
+void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr);
+u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
+ struct ieee802_11_elems *elems,
+ enum ieee80211_band band);
+void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+ int encrypt);
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems);
+
+#ifdef CONFIG_MAC80211_MESH
+void ieee80211_start_mesh(struct net_device *dev);
+#else
+static inline void ieee80211_start_mesh(struct net_device *dev)
+{}
+#endif
+
/* ieee80211_iface.c */
int ieee80211_if_add(struct net_device *dev, const char *name,
- struct net_device **new_dev, int type);
+ struct net_device **new_dev, int type,
+ struct vif_params *params);
void ieee80211_if_set_type(struct net_device *dev, int type);
void ieee80211_if_reinit(struct net_device *dev);
void __ieee80211_if_del(struct ieee80211_local *local,
@@ -782,16 +971,7 @@ int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
void ieee80211_if_free(struct net_device *dev);
void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
-/* regdomain.c */
-void ieee80211_regdomain_init(void);
-void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
-
-/* rx handling */
-extern ieee80211_rx_handler ieee80211_rx_pre_handlers[];
-extern ieee80211_rx_handler ieee80211_rx_handlers[];
-
/* tx handling */
-extern ieee80211_tx_handler ieee80211_tx_handlers[];
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
@@ -802,8 +982,8 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
extern void *mac80211_wiphy_privid; /* for wiphy privid */
extern const unsigned char rfc1042_header[6];
extern const unsigned char bridge_tunnel_header[6];
-u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
-int ieee80211_is_eapol(const struct sk_buff *skb, int hdrlen);
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+ enum ieee80211_if_types type);
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c
index b60561b..e69de29 100644
--- a/net/mac80211/ieee80211_iface.c
+++ b/net/mac80211/ieee80211_iface.c
@@ -1,301 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/if_arp.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "sta_info.h"
-#include "debugfs_netdev.h"
-
-void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
-{
- int i;
-
- /* Default values for sub-interface parameters */
- sdata->drop_unencrypted = 0;
- sdata->eapol = 1;
- for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
- skb_queue_head_init(&sdata->fragments[i].skb_list);
-
- INIT_LIST_HEAD(&sdata->key_list);
-}
-
-static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
-{
- int i;
-
- for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
- __skb_queue_purge(&sdata->fragments[i].skb_list);
- }
-}
-
-/* Must be called with rtnl lock held. */
-int ieee80211_if_add(struct net_device *dev, const char *name,
- struct net_device **new_dev, int type)
-{
- struct net_device *ndev;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = NULL;
- int ret;
-
- ASSERT_RTNL();
- ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
- name, ieee80211_if_setup);
- if (!ndev)
- return -ENOMEM;
-
- ret = dev_alloc_name(ndev, ndev->name);
- if (ret < 0)
- goto fail;
-
- memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
- ndev->base_addr = dev->base_addr;
- ndev->irq = dev->irq;
- ndev->mem_start = dev->mem_start;
- ndev->mem_end = dev->mem_end;
- SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
-
- sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
- ndev->ieee80211_ptr = &sdata->wdev;
- sdata->wdev.wiphy = local->hw.wiphy;
- sdata->type = IEEE80211_IF_TYPE_AP;
- sdata->dev = ndev;
- sdata->local = local;
- ieee80211_if_sdata_init(sdata);
-
- ret = register_netdevice(ndev);
- if (ret)
- goto fail;
-
- ieee80211_debugfs_add_netdev(sdata);
- ieee80211_if_set_type(ndev, type);
-
- /* we're under RTNL so all this is fine */
- if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
- __ieee80211_if_del(local, sdata);
- return -ENODEV;
- }
- list_add_tail_rcu(&sdata->list, &local->interfaces);
-
- if (new_dev)
- *new_dev = ndev;
-
- return 0;
-
-fail:
- free_netdev(ndev);
- return ret;
-}
-
-void ieee80211_if_set_type(struct net_device *dev, int type)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int oldtype = sdata->type;
-
- /*
- * We need to call this function on the master interface
- * which already has a hard_start_xmit routine assigned
- * which must not be changed.
- */
- if (dev != sdata->local->mdev)
- dev->hard_start_xmit = ieee80211_subif_start_xmit;
-
- /*
- * Called even when register_netdevice fails, it would
- * oops if assigned before initialising the rest.
- */
- dev->uninit = ieee80211_if_reinit;
-
- /* most have no BSS pointer */
- sdata->bss = NULL;
- sdata->type = type;
-
- switch (type) {
- case IEEE80211_IF_TYPE_WDS:
- /* nothing special */
- break;
- case IEEE80211_IF_TYPE_VLAN:
- sdata->u.vlan.ap = NULL;
- break;
- case IEEE80211_IF_TYPE_AP:
- sdata->u.ap.dtim_period = 2;
- sdata->u.ap.force_unicast_rateidx = -1;
- sdata->u.ap.max_ratectrl_rateidx = -1;
- skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
- sdata->bss = &sdata->u.ap;
- INIT_LIST_HEAD(&sdata->u.ap.vlans);
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS: {
- struct ieee80211_sub_if_data *msdata;
- struct ieee80211_if_sta *ifsta;
-
- ifsta = &sdata->u.sta;
- INIT_WORK(&ifsta->work, ieee80211_sta_work, dev);
- setup_timer(&ifsta->timer, ieee80211_sta_timer,
- (unsigned long) sdata);
- skb_queue_head_init(&ifsta->skb_queue);
-
- ifsta->capab = WLAN_CAPABILITY_ESS;
- ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
- IEEE80211_AUTH_ALG_SHARED_KEY;
- ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
- IEEE80211_STA_WMM_ENABLED |
- IEEE80211_STA_AUTO_BSSID_SEL |
- IEEE80211_STA_AUTO_CHANNEL_SEL;
-
- msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
- sdata->bss = &msdata->u.ap;
- break;
- }
- case IEEE80211_IF_TYPE_MNTR:
- dev->type = ARPHRD_IEEE80211_RADIOTAP;
- dev->hard_start_xmit = ieee80211_monitor_start_xmit;
- break;
- default:
- printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
- dev->name, __FUNCTION__, type);
- }
- ieee80211_debugfs_change_if_type(sdata, oldtype);
-}
-
-/* Must be called with rtnl lock held. */
-void ieee80211_if_reinit(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sta_info *sta;
- struct sk_buff *skb;
-
- ASSERT_RTNL();
-
- ieee80211_free_keys(sdata);
-
- ieee80211_if_sdata_deinit(sdata);
-
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_INVALID:
- /* cannot happen */
- WARN_ON(1);
- break;
- case IEEE80211_IF_TYPE_AP: {
- /* Remove all virtual interfaces that use this BSS
- * as their sdata->bss */
- struct ieee80211_sub_if_data *tsdata, *n;
-
- list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
- if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
- printk(KERN_DEBUG "%s: removing virtual "
- "interface %s because its BSS interface"
- " is being removed\n",
- sdata->dev->name, tsdata->dev->name);
- list_del_rcu(&tsdata->list);
- /*
- * We have lots of time and can afford
- * to sync for each interface
- */
- synchronize_rcu();
- __ieee80211_if_del(local, tsdata);
- }
- }
-
- kfree(sdata->u.ap.beacon_head);
- kfree(sdata->u.ap.beacon_tail);
-
- while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
- local->total_ps_buffered--;
- dev_kfree_skb(skb);
- }
-
- break;
- }
- case IEEE80211_IF_TYPE_WDS:
- sta = sta_info_get(local, sdata->u.wds.remote_addr);
- if (sta) {
- sta_info_free(sta);
- sta_info_put(sta);
- } else {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: Someone had deleted my STA "
- "entry for the WDS link\n", dev->name);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- }
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- kfree(sdata->u.sta.extra_ie);
- sdata->u.sta.extra_ie = NULL;
- kfree(sdata->u.sta.assocreq_ies);
- sdata->u.sta.assocreq_ies = NULL;
- kfree(sdata->u.sta.assocresp_ies);
- sdata->u.sta.assocresp_ies = NULL;
- if (sdata->u.sta.probe_resp) {
- dev_kfree_skb(sdata->u.sta.probe_resp);
- sdata->u.sta.probe_resp = NULL;
- }
-
- break;
- case IEEE80211_IF_TYPE_MNTR:
- dev->type = ARPHRD_ETHER;
- break;
- case IEEE80211_IF_TYPE_VLAN:
- sdata->u.vlan.ap = NULL;
- break;
- }
-
- /* remove all STAs that are bound to this virtual interface */
- sta_info_flush(local, dev);
-
- memset(&sdata->u, 0, sizeof(sdata->u));
- ieee80211_if_sdata_init(sdata);
-}
-
-/* Must be called with rtnl lock held. */
-void __ieee80211_if_del(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
-{
- struct net_device *dev = sdata->dev;
-
- ieee80211_debugfs_remove_netdev(sdata);
- unregister_netdevice(dev);
- /* Except master interface, the net_device will be freed by
- * net_device->destructor (i. e. ieee80211_if_free). */
-}
-
-/* Must be called with rtnl lock held. */
-int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata, *n;
-
- ASSERT_RTNL();
-
- list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
- if ((sdata->type == id || id == -1) &&
- strcmp(name, sdata->dev->name) == 0 &&
- sdata->dev != local->mdev) {
- list_del_rcu(&sdata->list);
- synchronize_rcu();
- __ieee80211_if_del(local, sdata);
- return 0;
- }
- }
- return -ENODEV;
-}
-
-void ieee80211_if_free(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- ieee80211_if_sdata_deinit(sdata);
- free_netdev(dev);
-}
diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index 0c52ed8..e69de29 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -1,1137 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <net/iw_handler.h>
-#include <asm/uaccess.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "wpa.h"
-#include "aes_ccm.h"
-
-
-static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
- int idx, int alg, int remove,
- int set_tx_key, const u8 *_key,
- size_t key_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int ret = 0;
- struct sta_info *sta;
- struct ieee80211_key *key;
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
- printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
- dev->name, idx);
- return -EINVAL;
- }
-
- if (is_broadcast_ether_addr(sta_addr)) {
- sta = NULL;
- key = sdata->keys[idx];
- } else {
- set_tx_key = 0;
- /*
- * According to the standard, the key index of a pairwise
- * key must be zero. However, some AP are broken when it
- * comes to WEP key indices, so we work around this.
- */
- if (idx != 0 && alg != ALG_WEP) {
- printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for "
- "individual key\n", dev->name);
- return -EINVAL;
- }
-
- sta = sta_info_get(local, sta_addr);
- if (!sta) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
- printk(KERN_DEBUG "%s: set_encrypt - unknown addr "
- "%s\n",
- dev->name, print_mac(mac, sta_addr));
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
-
- return -ENOENT;
- }
-
- key = sta->key;
- }
-
- if (remove) {
- ieee80211_key_free(key);
- key = NULL;
- } else {
- /*
- * Automatically frees any old key if present.
- */
- key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key);
- if (!key) {
- ret = -ENOMEM;
- goto err_out;
- }
- }
-
- if (set_tx_key || (!sta && !sdata->default_key && key))
- ieee80211_set_default_key(sdata, idx);
-
- ret = 0;
- err_out:
- if (sta)
- sta_info_put(sta);
- return ret;
-}
-
-static int ieee80211_ioctl_siwgenie(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
- return -EOPNOTSUPP;
-
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
- if (ret)
- return ret;
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- }
-
- return -EOPNOTSUPP;
-}
-
-static int ieee80211_ioctl_giwname(struct net_device *dev,
- struct iw_request_info *info,
- char *name, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- switch (local->hw.conf.phymode) {
- case MODE_IEEE80211A:
- strcpy(name, "IEEE 802.11a");
- break;
- case MODE_IEEE80211B:
- strcpy(name, "IEEE 802.11b");
- break;
- case MODE_IEEE80211G:
- strcpy(name, "IEEE 802.11g");
- break;
- default:
- strcpy(name, "IEEE 802.11");
- break;
- }
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwrange(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_range *range = (struct iw_range *) extra;
- struct ieee80211_hw_mode *mode = NULL;
- int c = 0;
-
- data->length = sizeof(struct iw_range);
- memset(range, 0, sizeof(struct iw_range));
-
- range->we_version_compiled = WIRELESS_EXT;
- range->we_version_source = 21;
- range->retry_capa = IW_RETRY_LIMIT;
- range->retry_flags = IW_RETRY_LIMIT;
- range->min_retry = 0;
- range->max_retry = 255;
- range->min_rts = 0;
- range->max_rts = 2347;
- range->min_frag = 256;
- range->max_frag = 2346;
-
- range->encoding_size[0] = 5;
- range->encoding_size[1] = 13;
- range->num_encoding_sizes = 2;
- range->max_encoding_tokens = NUM_DEFAULT_KEYS;
-
- range->max_qual.qual = local->hw.max_signal;
- range->max_qual.level = local->hw.max_rssi;
- range->max_qual.noise = local->hw.max_noise;
- range->max_qual.updated = local->wstats_flags;
-
- range->avg_qual.qual = local->hw.max_signal/2;
- range->avg_qual.level = 0;
- range->avg_qual.noise = 0;
- range->avg_qual.updated = local->wstats_flags;
-
- range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
- IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
-
- list_for_each_entry(mode, &local->modes_list, list) {
- int i = 0;
-
- if (!(local->enabled_modes & (1 << mode->mode)) ||
- (local->hw_modes & local->enabled_modes &
- (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
- continue;
-
- while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
- struct ieee80211_channel *chan = &mode->channels[i];
-
- if (chan->flag & IEEE80211_CHAN_W_SCAN) {
- range->freq[c].i = chan->chan;
- range->freq[c].m = chan->freq * 100000;
- range->freq[c].e = 1;
- c++;
- }
- i++;
- }
- }
- range->num_channels = c;
- range->num_frequency = c;
-
- IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
-
- range->scan_capa |= IW_SCAN_CAPA_ESSID;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwmode(struct net_device *dev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int type;
-
- if (sdata->type == IEEE80211_IF_TYPE_VLAN)
- return -EOPNOTSUPP;
-
- switch (*mode) {
- case IW_MODE_INFRA:
- type = IEEE80211_IF_TYPE_STA;
- break;
- case IW_MODE_ADHOC:
- type = IEEE80211_IF_TYPE_IBSS;
- break;
- case IW_MODE_MONITOR:
- type = IEEE80211_IF_TYPE_MNTR;
- break;
- default:
- return -EINVAL;
- }
-
- if (type == sdata->type)
- return 0;
- if (netif_running(dev))
- return -EBUSY;
-
- ieee80211_if_reinit(dev);
- ieee80211_if_set_type(dev, type);
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwmode(struct net_device *dev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_AP:
- *mode = IW_MODE_MASTER;
- break;
- case IEEE80211_IF_TYPE_STA:
- *mode = IW_MODE_INFRA;
- break;
- case IEEE80211_IF_TYPE_IBSS:
- *mode = IW_MODE_ADHOC;
- break;
- case IEEE80211_IF_TYPE_MNTR:
- *mode = IW_MODE_MONITOR;
- break;
- case IEEE80211_IF_TYPE_WDS:
- *mode = IW_MODE_REPEAT;
- break;
- case IEEE80211_IF_TYPE_VLAN:
- *mode = IW_MODE_SECOND; /* FIXME */
- break;
- default:
- *mode = IW_MODE_AUTO;
- break;
- }
- return 0;
-}
-
-int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq)
-{
- struct ieee80211_hw_mode *mode;
- int c, set = 0;
- int ret = -EINVAL;
-
- list_for_each_entry(mode, &local->modes_list, list) {
- if (!(local->enabled_modes & (1 << mode->mode)))
- continue;
- for (c = 0; c < mode->num_channels; c++) {
- struct ieee80211_channel *chan = &mode->channels[c];
- if (chan->flag & IEEE80211_CHAN_W_SCAN &&
- ((chan->chan == channel) || (chan->freq == freq))) {
- local->oper_channel = chan;
- local->oper_hw_mode = mode;
- set = 1;
- break;
- }
- }
- if (set)
- break;
- }
-
- if (set) {
- if (local->sta_sw_scanning)
- ret = 0;
- else
- ret = ieee80211_hw_config(local);
-
- rate_control_clear(local);
- }
-
- return ret;
-}
-
-static int ieee80211_ioctl_siwfreq(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->type == IEEE80211_IF_TYPE_STA)
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
-
- /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
- if (freq->e == 0) {
- if (freq->m < 0) {
- if (sdata->type == IEEE80211_IF_TYPE_STA)
- sdata->u.sta.flags |=
- IEEE80211_STA_AUTO_CHANNEL_SEL;
- return 0;
- } else
- return ieee80211_set_channel(local, freq->m, -1);
- } else {
- int i, div = 1000000;
- for (i = 0; i < freq->e; i++)
- div /= 10;
- if (div > 0)
- return ieee80211_set_channel(local, -1, freq->m / div);
- else
- return -EINVAL;
- }
-}
-
-
-static int ieee80211_ioctl_giwfreq(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level
- * driver for the current channel with firmware-based management */
-
- freq->m = local->hw.conf.freq;
- freq->e = 6;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwessid(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *ssid)
-{
- struct ieee80211_sub_if_data *sdata;
- size_t len = data->length;
-
- /* iwconfig uses nul termination in SSID.. */
- if (len > 0 && ssid[len - 1] == '\0')
- len--;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- int ret;
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
- if (len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
- memcpy(sdata->u.sta.ssid, ssid, len);
- sdata->u.sta.ssid_len = len;
- return 0;
- }
- if (data->flags)
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
- else
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
- ret = ieee80211_sta_set_ssid(dev, ssid, len);
- if (ret)
- return ret;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- }
-
- if (sdata->type == IEEE80211_IF_TYPE_AP) {
- memcpy(sdata->u.ap.ssid, ssid, len);
- memset(sdata->u.ap.ssid + len, 0,
- IEEE80211_MAX_SSID_LEN - len);
- sdata->u.ap.ssid_len = len;
- return ieee80211_if_config(dev);
- }
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_giwessid(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *ssid)
-{
- size_t len;
-
- struct ieee80211_sub_if_data *sdata;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- int res = ieee80211_sta_get_ssid(dev, ssid, &len);
- if (res == 0) {
- data->length = len;
- data->flags = 1;
- } else
- data->flags = 0;
- return res;
- }
-
- if (sdata->type == IEEE80211_IF_TYPE_AP) {
- len = sdata->u.ap.ssid_len;
- if (len > IW_ESSID_MAX_SIZE)
- len = IW_ESSID_MAX_SIZE;
- memcpy(ssid, sdata->u.ap.ssid, len);
- data->length = len;
- data->flags = 1;
- return 0;
- }
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_siwap(struct net_device *dev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- int ret;
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
- memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
- ETH_ALEN);
- return 0;
- }
- if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
- IEEE80211_STA_AUTO_CHANNEL_SEL;
- else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
- else
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
- ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
- if (ret)
- return ret;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
- if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
- ETH_ALEN) == 0)
- return 0;
- return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data);
- }
-
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_giwap(struct net_device *dev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- ap_addr->sa_family = ARPHRD_ETHER;
- memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
- return 0;
- } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
- ap_addr->sa_family = ARPHRD_ETHER;
- memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
- return 0;
- }
-
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_siwscan(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct iw_scan_req *req = NULL;
- u8 *ssid = NULL;
- size_t ssid_len = 0;
-
- if (!netif_running(dev))
- return -ENETDOWN;
-
- if (sdata->type != IEEE80211_IF_TYPE_STA &&
- sdata->type != IEEE80211_IF_TYPE_IBSS &&
- sdata->type != IEEE80211_IF_TYPE_AP) {
- return -EOPNOTSUPP;
- }
-
- /* if SSID was specified explicitly then use that */
- if (wrqu->data.length == sizeof(struct iw_scan_req) &&
- wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- req = (struct iw_scan_req *)extra;
- ssid = req->essid;
- ssid_len = req->essid_len;
- }
-
- return ieee80211_sta_req_scan(dev, ssid, ssid_len);
-}
-
-
-static int ieee80211_ioctl_giwscan(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- int res;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return -EAGAIN;
-
- res = ieee80211_sta_scan_results(dev, extra, data->length);
- if (res >= 0) {
- data->length = res;
- return 0;
- }
- data->length = 0;
- return res;
-}
-
-
-static int ieee80211_ioctl_siwrate(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rate, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
- int i;
- u32 target_rate = rate->value / 100000;
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (!sdata->bss)
- return -ENODEV;
- mode = local->oper_hw_mode;
- /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
- * target_rate = X, rate->fixed = 1 means only rate X
- * target_rate = X, rate->fixed = 0 means all rates <= X */
- sdata->bss->max_ratectrl_rateidx = -1;
- sdata->bss->force_unicast_rateidx = -1;
- if (rate->value < 0)
- return 0;
- for (i=0; i< mode->num_rates; i++) {
- struct ieee80211_rate *rates = &mode->rates[i];
- int this_rate = rates->rate;
-
- if (target_rate == this_rate) {
- sdata->bss->max_ratectrl_rateidx = i;
- if (rate->fixed)
- sdata->bss->force_unicast_rateidx = i;
- break;
- }
- }
- return 0;
-}
-
-static int ieee80211_ioctl_giwrate(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rate, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA)
- sta = sta_info_get(local, sdata->u.sta.bssid);
- else
- return -EOPNOTSUPP;
- if (!sta)
- return -ENODEV;
- if (sta->txrate < local->oper_hw_mode->num_rates)
- rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000;
- else
- rate->value = 0;
- sta_info_put(sta);
- return 0;
-}
-
-static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- bool need_reconfig = 0;
- u8 new_power_level;
-
- if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
- return -EINVAL;
- if (data->txpower.flags & IW_TXPOW_RANGE)
- return -EINVAL;
-
- if (data->txpower.fixed) {
- new_power_level = data->txpower.value;
- } else {
- /* Automatic power level. Get the px power from the current
- * channel. */
- struct ieee80211_channel* chan = local->oper_channel;
- if (!chan)
- return -EINVAL;
-
- new_power_level = chan->power_level;
- }
-
- if (local->hw.conf.power_level != new_power_level) {
- local->hw.conf.power_level = new_power_level;
- need_reconfig = 1;
- }
-
- if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
- local->hw.conf.radio_enabled = !(data->txpower.disabled);
- need_reconfig = 1;
- }
-
- if (need_reconfig) {
- ieee80211_hw_config(local);
- /* The return value of hw_config is not of big interest here,
- * as it doesn't say that it failed because of _this_ config
- * change or something else. Ignore it. */
- }
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- data->txpower.fixed = 1;
- data->txpower.disabled = !(local->hw.conf.radio_enabled);
- data->txpower.value = local->hw.conf.power_level;
- data->txpower.flags = IW_TXPOW_DBM;
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwrts(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (rts->disabled)
- local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
- else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
- return -EINVAL;
- else
- local->rts_threshold = rts->value;
-
- /* If the wlan card performs RTS/CTS in hardware/firmware,
- * configure it here */
-
- if (local->ops->set_rts_threshold)
- local->ops->set_rts_threshold(local_to_hw(local),
- local->rts_threshold);
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwrts(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- rts->value = local->rts_threshold;
- rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
- rts->fixed = 1;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwfrag(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (frag->disabled)
- local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
- else if (frag->value < 256 ||
- frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
- return -EINVAL;
- else {
- /* Fragment length must be even, so strip LSB. */
- local->fragmentation_threshold = frag->value & ~0x1;
- }
-
- /* If the wlan card performs fragmentation in hardware/firmware,
- * configure it here */
-
- if (local->ops->set_frag_threshold)
- local->ops->set_frag_threshold(
- local_to_hw(local),
- local->fragmentation_threshold);
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwfrag(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- frag->value = local->fragmentation_threshold;
- frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
- frag->fixed = 1;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwretry(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (retry->disabled ||
- (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
- return -EINVAL;
-
- if (retry->flags & IW_RETRY_MAX)
- local->long_retry_limit = retry->value;
- else if (retry->flags & IW_RETRY_MIN)
- local->short_retry_limit = retry->value;
- else {
- local->long_retry_limit = retry->value;
- local->short_retry_limit = retry->value;
- }
-
- if (local->ops->set_retry_limit) {
- return local->ops->set_retry_limit(
- local_to_hw(local),
- local->short_retry_limit,
- local->long_retry_limit);
- }
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwretry(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- retry->disabled = 0;
- if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
- /* first return min value, iwconfig will ask max value
- * later if needed */
- retry->flags |= IW_RETRY_LIMIT;
- retry->value = local->short_retry_limit;
- if (local->long_retry_limit != local->short_retry_limit)
- retry->flags |= IW_RETRY_MIN;
- return 0;
- }
- if (retry->flags & IW_RETRY_MAX) {
- retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
- retry->value = local->long_retry_limit;
- }
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwmlme(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
- struct iw_mlme *mlme = (struct iw_mlme *) extra;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type != IEEE80211_IF_TYPE_STA &&
- sdata->type != IEEE80211_IF_TYPE_IBSS)
- return -EINVAL;
-
- switch (mlme->cmd) {
- case IW_MLME_DEAUTH:
- /* TODO: mlme->addr.sa_data */
- return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
- case IW_MLME_DISASSOC:
- /* TODO: mlme->addr.sa_data */
- return ieee80211_sta_disassociate(dev, mlme->reason_code);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-
-static int ieee80211_ioctl_siwencode(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *keybuf)
-{
- struct ieee80211_sub_if_data *sdata;
- int idx, i, alg = ALG_WEP;
- u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
- int remove = 0;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx == 0) {
- if (sdata->default_key)
- for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- } else if (idx < 1 || idx > 4)
- return -EINVAL;
- else
- idx--;
-
- if (erq->flags & IW_ENCODE_DISABLED)
- remove = 1;
- else if (erq->length == 0) {
- /* No key data - just set the default TX key index */
- ieee80211_set_default_key(sdata, idx);
- return 0;
- }
-
- return ieee80211_set_encryption(
- dev, bcaddr,
- idx, alg, remove,
- !sdata->default_key,
- keybuf, erq->length);
-}
-
-
-static int ieee80211_ioctl_giwencode(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *key)
-{
- struct ieee80211_sub_if_data *sdata;
- int idx, i;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx < 1 || idx > 4) {
- idx = -1;
- if (!sdata->default_key)
- idx = 0;
- else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- if (idx < 0)
- return -EINVAL;
- } else
- idx--;
-
- erq->flags = idx + 1;
-
- if (!sdata->keys[idx]) {
- erq->length = 0;
- erq->flags |= IW_ENCODE_DISABLED;
- return 0;
- }
-
- memcpy(key, sdata->keys[idx]->conf.key,
- min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
- erq->length = sdata->keys[idx]->conf.keylen;
- erq->flags |= IW_ENCODE_ENABLED;
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwauth(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int ret = 0;
-
- switch (data->flags & IW_AUTH_INDEX) {
- case IW_AUTH_WPA_VERSION:
- case IW_AUTH_CIPHER_PAIRWISE:
- case IW_AUTH_CIPHER_GROUP:
- case IW_AUTH_WPA_ENABLED:
- case IW_AUTH_RX_UNENCRYPTED_EAPOL:
- case IW_AUTH_KEY_MGMT:
- break;
- case IW_AUTH_DROP_UNENCRYPTED:
- sdata->drop_unencrypted = !!data->value;
- break;
- case IW_AUTH_PRIVACY_INVOKED:
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- ret = -EINVAL;
- else {
- sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
- /*
- * Privacy invoked by wpa_supplicant, store the
- * value and allow associating to a protected
- * network without having a key up front.
- */
- if (data->value)
- sdata->u.sta.flags |=
- IEEE80211_STA_PRIVACY_INVOKED;
- }
- break;
- case IW_AUTH_80211_AUTH_ALG:
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS)
- sdata->u.sta.auth_algs = data->value;
- else
- ret = -EOPNOTSUPP;
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
- return ret;
-}
-
-/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
-static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_statistics *wstats = &local->wstats;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sta_info *sta = NULL;
-
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS)
- sta = sta_info_get(local, sdata->u.sta.bssid);
- if (!sta) {
- wstats->discard.fragment = 0;
- wstats->discard.misc = 0;
- wstats->qual.qual = 0;
- wstats->qual.level = 0;
- wstats->qual.noise = 0;
- wstats->qual.updated = IW_QUAL_ALL_INVALID;
- } else {
- wstats->qual.level = sta->last_rssi;
- wstats->qual.qual = sta->last_signal;
- wstats->qual.noise = sta->last_noise;
- wstats->qual.updated = local->wstats_flags;
- sta_info_put(sta);
- }
- return wstats;
-}
-
-static int ieee80211_ioctl_giwauth(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int ret = 0;
-
- switch (data->flags & IW_AUTH_INDEX) {
- case IW_AUTH_80211_AUTH_ALG:
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS)
- data->value = sdata->u.sta.auth_algs;
- else
- ret = -EOPNOTSUPP;
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
- return ret;
-}
-
-
-static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
- int uninitialized_var(alg), idx, i, remove = 0;
-
- switch (ext->alg) {
- case IW_ENCODE_ALG_NONE:
- remove = 1;
- break;
- case IW_ENCODE_ALG_WEP:
- alg = ALG_WEP;
- break;
- case IW_ENCODE_ALG_TKIP:
- alg = ALG_TKIP;
- break;
- case IW_ENCODE_ALG_CCMP:
- alg = ALG_CCMP;
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- if (erq->flags & IW_ENCODE_DISABLED)
- remove = 1;
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx < 1 || idx > 4) {
- idx = -1;
- if (!sdata->default_key)
- idx = 0;
- else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- if (idx < 0)
- return -EINVAL;
- } else
- idx--;
-
- return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
- remove,
- ext->ext_flags &
- IW_ENCODE_EXT_SET_TX_KEY,
- ext->key, ext->key_len);
-}
-
-
-/* Structures to export the Wireless Handlers */
-
-static const iw_handler ieee80211_handler[] =
-{
- (iw_handler) NULL, /* SIOCSIWCOMMIT */
- (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
- (iw_handler) NULL, /* SIOCSIWNWID */
- (iw_handler) NULL, /* SIOCGIWNWID */
- (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
- (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
- (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
- (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
- (iw_handler) NULL, /* SIOCSIWSENS */
- (iw_handler) NULL, /* SIOCGIWSENS */
- (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
- (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
- (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
- (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
- (iw_handler) NULL, /* SIOCSIWSPY */
- (iw_handler) NULL, /* SIOCGIWSPY */
- (iw_handler) NULL, /* SIOCSIWTHRSPY */
- (iw_handler) NULL, /* SIOCGIWTHRSPY */
- (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
- (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
- (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
- (iw_handler) NULL, /* SIOCGIWAPLIST */
- (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
- (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
- (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
- (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
- (iw_handler) NULL, /* SIOCSIWNICKN */
- (iw_handler) NULL, /* SIOCGIWNICKN */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
- (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
- (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
- (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
- (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
- (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
- (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
- (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
- (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
- (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
- (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
- (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
- (iw_handler) NULL, /* SIOCSIWPOWER */
- (iw_handler) NULL, /* SIOCGIWPOWER */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
- (iw_handler) NULL, /* SIOCGIWGENIE */
- (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
- (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
- (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
- (iw_handler) NULL, /* SIOCGIWENCODEEXT */
- (iw_handler) NULL, /* SIOCSIWPMKSA */
- (iw_handler) NULL, /* -- hole -- */
-};
-
-const struct iw_handler_def ieee80211_iw_handler_def =
-{
- .num_standard = ARRAY_SIZE(ieee80211_handler),
- .standard = (iw_handler *) ieee80211_handler,
- .get_wireless_stats = ieee80211_get_wireless_stats,
-};
diff --git a/net/mac80211/ieee80211_key.h b/net/mac80211/ieee80211_key.h
index bab63ee..e69de29 100644
--- a/net/mac80211/ieee80211_key.h
+++ b/net/mac80211/ieee80211_key.h
@@ -1,127 +0,0 @@
-/*
- * Copyright 2002-2004, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef IEEE80211_KEY_H
-#define IEEE80211_KEY_H
-
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/crypto.h>
-#include <net/mac80211.h>
-
-/* ALG_TKIP
- * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
- * Temporal Encryption Key (128 bits)
- * Temporal Authenticator Tx MIC Key (64 bits)
- * Temporal Authenticator Rx MIC Key (64 bits)
- */
-
-#define WEP_IV_LEN 4
-#define WEP_ICV_LEN 4
-
-#define ALG_TKIP_KEY_LEN 32
-/* Starting offsets for each key */
-#define ALG_TKIP_TEMP_ENCR_KEY 0
-#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
-#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
-#define TKIP_IV_LEN 8
-#define TKIP_ICV_LEN 4
-
-#define ALG_CCMP_KEY_LEN 16
-#define CCMP_HDR_LEN 8
-#define CCMP_MIC_LEN 8
-#define CCMP_TK_LEN 16
-#define CCMP_PN_LEN 6
-
-#define NUM_RX_DATA_QUEUES 17
-
-struct ieee80211_local;
-struct ieee80211_sub_if_data;
-struct sta_info;
-
-#define KEY_FLAG_UPLOADED_TO_HARDWARE (1<<0)
-
-struct ieee80211_key {
- struct ieee80211_local *local;
- struct ieee80211_sub_if_data *sdata;
- struct sta_info *sta;
-
- struct list_head list;
-
- unsigned int flags;
-
- union {
- struct {
- /* last used TSC */
- u32 iv32;
- u16 iv16;
- u16 p1k[5];
- int tx_initialized;
-
- /* last received RSC */
- u32 iv32_rx[NUM_RX_DATA_QUEUES];
- u16 iv16_rx[NUM_RX_DATA_QUEUES];
- u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
- int rx_initialized[NUM_RX_DATA_QUEUES];
- } tkip;
- struct {
- u8 tx_pn[6];
- u8 rx_pn[NUM_RX_DATA_QUEUES][6];
- struct crypto_tfm *tfm;
- u32 replays; /* dot11RSNAStatsCCMPReplays */
- /* scratch buffers for virt_to_page() (crypto API) */
-#ifndef AES_BLOCK_LEN
-#define AES_BLOCK_LEN 16
-#endif
- u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
- u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
- } ccmp;
- } u;
-
- /* number of times this key has been used */
- int tx_rx_count;
-
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct {
- struct dentry *stalink;
- struct dentry *dir;
- struct dentry *keylen;
- struct dentry *flags;
- struct dentry *keyidx;
- struct dentry *hw_key_idx;
- struct dentry *tx_rx_count;
- struct dentry *algorithm;
- struct dentry *tx_spec;
- struct dentry *rx_spec;
- struct dentry *replays;
- struct dentry *key;
- struct dentry *ifindex;
- } debugfs;
-#endif
-
- /*
- * key config, must be last because it contains key
- * material as variable length member
- */
- struct ieee80211_key_conf conf;
-};
-
-struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
- struct sta_info *sta,
- enum ieee80211_key_alg alg,
- int idx,
- size_t key_len,
- const u8 *key_data);
-void ieee80211_key_free(struct ieee80211_key *key);
-void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
-void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
-void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
-void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
-
-#endif /* IEEE80211_KEY_H */
diff --git a/net/mac80211/ieee80211_led.c b/net/mac80211/ieee80211_led.c
index 4cf89af..e69de29 100644
--- a/net/mac80211/ieee80211_led.c
+++ b/net/mac80211/ieee80211_led.c
@@ -1,126 +0,0 @@
-/*
- * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* just for IFNAMSIZ */
-#include <linux/if.h>
-#include "ieee80211_led.h"
-
-void ieee80211_led_rx(struct ieee80211_local *local)
-{
- if (unlikely(!local->rx_led))
- return;
- if (local->rx_led_counter++ % 2 == 0)
- led_trigger_event(local->rx_led, LED_OFF);
- else
- led_trigger_event(local->rx_led, LED_FULL);
-}
-
-/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
-void ieee80211_led_tx(struct ieee80211_local *local, int q)
-{
- if (unlikely(!local->tx_led))
- return;
- /* not sure how this is supposed to work ... */
- local->tx_led_counter += 2*q-1;
- if (local->tx_led_counter % 2 == 0)
- led_trigger_event(local->tx_led, LED_OFF);
- else
- led_trigger_event(local->tx_led, LED_FULL);
-}
-
-void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
-{
- if (unlikely(!local->assoc_led))
- return;
- if (associated)
- led_trigger_event(local->assoc_led, LED_FULL);
- else
- led_trigger_event(local->assoc_led, LED_OFF);
-}
-
-void ieee80211_led_init(struct ieee80211_local *local)
-{
- local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->rx_led) {
- snprintf(local->rx_led_name, sizeof(local->rx_led_name),
- "%srx", wiphy_name(local->hw.wiphy));
- local->rx_led->name = local->rx_led_name;
- if (led_trigger_register(local->rx_led)) {
- kfree(local->rx_led);
- local->rx_led = NULL;
- }
- }
-
- local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->tx_led) {
- snprintf(local->tx_led_name, sizeof(local->tx_led_name),
- "%stx", wiphy_name(local->hw.wiphy));
- local->tx_led->name = local->tx_led_name;
- if (led_trigger_register(local->tx_led)) {
- kfree(local->tx_led);
- local->tx_led = NULL;
- }
- }
-
- local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->assoc_led) {
- snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
- "%sassoc", wiphy_name(local->hw.wiphy));
- local->assoc_led->name = local->assoc_led_name;
- if (led_trigger_register(local->assoc_led)) {
- kfree(local->assoc_led);
- local->assoc_led = NULL;
- }
- }
-}
-
-void ieee80211_led_exit(struct ieee80211_local *local)
-{
- if (local->assoc_led) {
- led_trigger_unregister(local->assoc_led);
- kfree(local->assoc_led);
- }
- if (local->tx_led) {
- led_trigger_unregister(local->tx_led);
- kfree(local->tx_led);
- }
- if (local->rx_led) {
- led_trigger_unregister(local->rx_led);
- kfree(local->rx_led);
- }
-}
-
-char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->assoc_led)
- return local->assoc_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
-
-char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->tx_led)
- return local->tx_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
-
-char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->rx_led)
- return local->rx_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
diff --git a/net/mac80211/ieee80211_led.h b/net/mac80211/ieee80211_led.h
index 0feb226..e69de29 100644
--- a/net/mac80211/ieee80211_led.h
+++ b/net/mac80211/ieee80211_led.h
@@ -1,38 +0,0 @@
-/*
- * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <linux/leds.h>
-#include "ieee80211_i.h"
-
-#ifdef CONFIG_MAC80211_LEDS
-extern void ieee80211_led_rx(struct ieee80211_local *local);
-extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
-extern void ieee80211_led_assoc(struct ieee80211_local *local,
- bool associated);
-extern void ieee80211_led_init(struct ieee80211_local *local);
-extern void ieee80211_led_exit(struct ieee80211_local *local);
-#else
-static inline void ieee80211_led_rx(struct ieee80211_local *local)
-{
-}
-static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
-{
-}
-static inline void ieee80211_led_assoc(struct ieee80211_local *local,
- bool associated)
-{
-}
-static inline void ieee80211_led_init(struct ieee80211_local *local)
-{
-}
-static inline void ieee80211_led_exit(struct ieee80211_local *local)
-{
-}
-#endif
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
index c3f2783..e69de29 100644
--- a/net/mac80211/ieee80211_rate.c
+++ b/net/mac80211/ieee80211_rate.c
@@ -1,199 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/rtnetlink.h>
-#include "ieee80211_rate.h"
-#include "ieee80211_i.h"
-
-struct rate_control_alg {
- struct list_head list;
- struct rate_control_ops *ops;
-};
-
-static LIST_HEAD(rate_ctrl_algs);
-static DEFINE_MUTEX(rate_ctrl_mutex);
-
-int ieee80211_rate_control_register(struct rate_control_ops *ops)
-{
- struct rate_control_alg *alg;
-
- if (!ops->name)
- return -EINVAL;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (!strcmp(alg->ops->name, ops->name)) {
- /* don't register an algorithm twice */
- WARN_ON(1);
- mutex_unlock(&rate_ctrl_mutex);
- return -EALREADY;
- }
- }
-
- alg = kzalloc(sizeof(*alg), GFP_KERNEL);
- if (alg == NULL) {
- mutex_unlock(&rate_ctrl_mutex);
- return -ENOMEM;
- }
- alg->ops = ops;
-
- list_add_tail(&alg->list, &rate_ctrl_algs);
- mutex_unlock(&rate_ctrl_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ieee80211_rate_control_register);
-
-void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
-{
- struct rate_control_alg *alg;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (alg->ops == ops) {
- list_del(&alg->list);
- kfree(alg);
- break;
- }
- }
- mutex_unlock(&rate_ctrl_mutex);
-}
-EXPORT_SYMBOL(ieee80211_rate_control_unregister);
-
-static struct rate_control_ops *
-ieee80211_try_rate_control_ops_get(const char *name)
-{
- struct rate_control_alg *alg;
- struct rate_control_ops *ops = NULL;
-
- if (!name)
- return NULL;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (!strcmp(alg->ops->name, name))
- if (try_module_get(alg->ops->module)) {
- ops = alg->ops;
- break;
- }
- }
- mutex_unlock(&rate_ctrl_mutex);
- return ops;
-}
-
-/* Get the rate control algorithm. If `name' is NULL, get the first
- * available algorithm. */
-static struct rate_control_ops *
-ieee80211_rate_control_ops_get(const char *name)
-{
- struct rate_control_ops *ops;
-
- if (!name)
- name = "simple";
-
- ops = ieee80211_try_rate_control_ops_get(name);
- if (!ops) {
- request_module("rc80211_%s", name);
- ops = ieee80211_try_rate_control_ops_get(name);
- }
- return ops;
-}
-
-static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
-{
- module_put(ops->module);
-}
-
-struct rate_control_ref *rate_control_alloc(const char *name,
- struct ieee80211_local *local)
-{
- struct rate_control_ref *ref;
-
- ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
- if (!ref)
- goto fail_ref;
- kref_init(&ref->kref);
- ref->ops = ieee80211_rate_control_ops_get(name);
- if (!ref->ops)
- goto fail_ops;
- ref->priv = ref->ops->alloc(local);
- if (!ref->priv)
- goto fail_priv;
- return ref;
-
-fail_priv:
- ieee80211_rate_control_ops_put(ref->ops);
-fail_ops:
- kfree(ref);
-fail_ref:
- return NULL;
-}
-
-static void rate_control_release(struct kref *kref)
-{
- struct rate_control_ref *ctrl_ref;
-
- ctrl_ref = container_of(kref, struct rate_control_ref, kref);
- ctrl_ref->ops->free(ctrl_ref->priv);
- ieee80211_rate_control_ops_put(ctrl_ref->ops);
- kfree(ctrl_ref);
-}
-
-struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
-{
- kref_get(&ref->kref);
- return ref;
-}
-
-void rate_control_put(struct rate_control_ref *ref)
-{
- kref_put(&ref->kref, rate_control_release);
-}
-
-int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
- const char *name)
-{
- struct rate_control_ref *ref, *old;
-
- ASSERT_RTNL();
- if (local->open_count || netif_running(local->mdev))
- return -EBUSY;
-
- ref = rate_control_alloc(name, local);
- if (!ref) {
- printk(KERN_WARNING "%s: Failed to select rate control "
- "algorithm\n", wiphy_name(local->hw.wiphy));
- return -ENOENT;
- }
-
- old = local->rate_ctrl;
- local->rate_ctrl = ref;
- if (old) {
- rate_control_put(old);
- sta_info_flush(local, NULL);
- }
-
- printk(KERN_DEBUG "%s: Selected rate control "
- "algorithm '%s'\n", wiphy_name(local->hw.wiphy),
- ref->ops->name);
-
-
- return 0;
-}
-
-void rate_control_deinitialize(struct ieee80211_local *local)
-{
- struct rate_control_ref *ref;
-
- ref = local->rate_ctrl;
- local->rate_ctrl = NULL;
- rate_control_put(ref);
-}
diff --git a/net/mac80211/ieee80211_rate.h b/net/mac80211/ieee80211_rate.h
index 2368813..e69de29 100644
--- a/net/mac80211/ieee80211_rate.h
+++ b/net/mac80211/ieee80211_rate.h
@@ -1,151 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef IEEE80211_RATE_H
-#define IEEE80211_RATE_H
-
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/types.h>
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "sta_info.h"
-
-#define RATE_CONTROL_NUM_DOWN 20
-#define RATE_CONTROL_NUM_UP 15
-
-
-struct rate_control_extra {
- /* values from rate_control_get_rate() to the caller: */
- struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
- * probing */
- struct ieee80211_rate *nonerp;
-
- /* parameters from the caller to rate_control_get_rate(): */
- struct ieee80211_hw_mode *mode;
- u16 ethertype;
-};
-
-
-struct rate_control_ops {
- struct module *module;
- const char *name;
- void (*tx_status)(void *priv, struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status);
- struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
- struct sk_buff *skb,
- struct rate_control_extra *extra);
- void (*rate_init)(void *priv, void *priv_sta,
- struct ieee80211_local *local, struct sta_info *sta);
- void (*clear)(void *priv);
-
- void *(*alloc)(struct ieee80211_local *local);
- void (*free)(void *priv);
- void *(*alloc_sta)(void *priv, gfp_t gfp);
- void (*free_sta)(void *priv, void *priv_sta);
-
- int (*add_attrs)(void *priv, struct kobject *kobj);
- void (*remove_attrs)(void *priv, struct kobject *kobj);
- void (*add_sta_debugfs)(void *priv, void *priv_sta,
- struct dentry *dir);
- void (*remove_sta_debugfs)(void *priv, void *priv_sta);
-};
-
-struct rate_control_ref {
- struct rate_control_ops *ops;
- void *priv;
- struct kref kref;
-};
-
-/* default 'simple' algorithm */
-extern struct rate_control_ops mac80211_rcsimple;
-
-int ieee80211_rate_control_register(struct rate_control_ops *ops);
-void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
-
-/* Get a reference to the rate control algorithm. If `name' is NULL, get the
- * first available algorithm. */
-struct rate_control_ref *rate_control_alloc(const char *name,
- struct ieee80211_local *local);
-struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
-void rate_control_put(struct rate_control_ref *ref);
-
-static inline void rate_control_tx_status(struct ieee80211_local *local,
- struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct rate_control_ref *ref = local->rate_ctrl;
- ref->ops->tx_status(ref->priv, dev, skb, status);
-}
-
-
-static inline struct ieee80211_rate *
-rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
- struct sk_buff *skb, struct rate_control_extra *extra)
-{
- struct rate_control_ref *ref = local->rate_ctrl;
- return ref->ops->get_rate(ref->priv, dev, skb, extra);
-}
-
-
-static inline void rate_control_rate_init(struct sta_info *sta,
- struct ieee80211_local *local)
-{
- struct rate_control_ref *ref = sta->rate_ctrl;
- ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
-}
-
-
-static inline void rate_control_clear(struct ieee80211_local *local)
-{
- struct rate_control_ref *ref = local->rate_ctrl;
- ref->ops->clear(ref->priv);
-}
-
-static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
- gfp_t gfp)
-{
- return ref->ops->alloc_sta(ref->priv, gfp);
-}
-
-static inline void rate_control_free_sta(struct rate_control_ref *ref,
- void *priv)
-{
- ref->ops->free_sta(ref->priv, priv);
-}
-
-static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
-{
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct rate_control_ref *ref = sta->rate_ctrl;
- if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
- ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
- sta->debugfs.dir);
-#endif
-}
-
-static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
-{
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct rate_control_ref *ref = sta->rate_ctrl;
- if (ref->ops->remove_sta_debugfs)
- ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
-#endif
-}
-
-
-/* functions for rate control related to a device */
-int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
- const char *name);
-void rate_control_deinitialize(struct ieee80211_local *local);
-
-#endif /* IEEE80211_RATE_H */
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 0a07334..e69de29 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1,3376 +0,0 @@
-/*
- * BSS client mode implementation
- * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
- * Copyright 2004, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
- * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* TODO:
- * order BSS list by RSSI(?) ("quality of AP")
- * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
- * SSID)
- */
-#include <linux/delay.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <linux/random.h>
-#include <linux/etherdevice.h>
-#include <net/iw_handler.h>
-#include <asm/types.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "ieee80211_led.h"
-
-#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
-#define IEEE80211_AUTH_MAX_TRIES 3
-#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
-#define IEEE80211_ASSOC_MAX_TRIES 3
-#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
-#define IEEE80211_PROBE_INTERVAL (60 * HZ)
-#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
-#define IEEE80211_SCAN_INTERVAL (2 * HZ)
-#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
-#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
-
-#define IEEE80211_PROBE_DELAY (HZ / 33)
-#define IEEE80211_CHANNEL_TIME (HZ / 33)
-#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
-#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
-#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
-#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
-
-#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
-
-
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
-
-#define ERP_INFO_USE_PROTECTION BIT(1)
-
-/* mgmt header + 1 byte action code */
-#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
-
-#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
-#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
-
-static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
- u8 *ssid, size_t ssid_len);
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
- u8 *ssid, u8 ssid_len);
-static void ieee80211_rx_bss_put(struct net_device *dev,
- struct ieee80211_sta_bss *bss);
-static int ieee80211_sta_find_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-static int ieee80211_sta_wep_configured(struct net_device *dev);
-static int ieee80211_sta_start_scan(struct net_device *dev,
- u8 *ssid, size_t ssid_len);
-static int ieee80211_sta_config_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-
-
-/* Parsed Information Elements */
-struct ieee802_11_elems {
- /* pointers to IEs */
- u8 *ssid;
- u8 *supp_rates;
- u8 *fh_params;
- u8 *ds_params;
- u8 *cf_params;
- u8 *tim;
- u8 *ibss_params;
- u8 *challenge;
- u8 *wpa;
- u8 *rsn;
- u8 *erp_info;
- u8 *ext_supp_rates;
- u8 *wmm_info;
- u8 *wmm_param;
- u8 *ht_cap_elem;
- u8 *ht_info_elem;
- /* length of them, respectively */
- u8 ssid_len;
- u8 supp_rates_len;
- u8 fh_params_len;
- u8 ds_params_len;
- u8 cf_params_len;
- u8 tim_len;
- u8 ibss_params_len;
- u8 challenge_len;
- u8 wpa_len;
- u8 rsn_len;
- u8 erp_info_len;
- u8 ext_supp_rates_len;
- u8 wmm_info_len;
- u8 wmm_param_len;
- u8 ht_cap_elem_len;
- u8 ht_info_elem_len;
-};
-
-static void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems)
-{
- size_t left = len;
- u8 *pos = start;
-
- memset(elems, 0, sizeof(*elems));
-
- while (left >= 2) {
- u8 id, elen;
-
- id = *pos++;
- elen = *pos++;
- left -= 2;
-
- if (elen > left)
- return;
-
- switch (id) {
- case WLAN_EID_SSID:
- elems->ssid = pos;
- elems->ssid_len = elen;
- break;
- case WLAN_EID_SUPP_RATES:
- elems->supp_rates = pos;
- elems->supp_rates_len = elen;
- break;
- case WLAN_EID_FH_PARAMS:
- elems->fh_params = pos;
- elems->fh_params_len = elen;
- break;
- case WLAN_EID_DS_PARAMS:
- elems->ds_params = pos;
- elems->ds_params_len = elen;
- break;
- case WLAN_EID_CF_PARAMS:
- elems->cf_params = pos;
- elems->cf_params_len = elen;
- break;
- case WLAN_EID_TIM:
- elems->tim = pos;
- elems->tim_len = elen;
- break;
- case WLAN_EID_IBSS_PARAMS:
- elems->ibss_params = pos;
- elems->ibss_params_len = elen;
- break;
- case WLAN_EID_CHALLENGE:
- elems->challenge = pos;
- elems->challenge_len = elen;
- break;
- case WLAN_EID_WPA:
- if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
- pos[2] == 0xf2) {
- /* Microsoft OUI (00:50:F2) */
- if (pos[3] == 1) {
- /* OUI Type 1 - WPA IE */
- elems->wpa = pos;
- elems->wpa_len = elen;
- } else if (elen >= 5 && pos[3] == 2) {
- if (pos[4] == 0) {
- elems->wmm_info = pos;
- elems->wmm_info_len = elen;
- } else if (pos[4] == 1) {
- elems->wmm_param = pos;
- elems->wmm_param_len = elen;
- }
- }
- }
- break;
- case WLAN_EID_RSN:
- elems->rsn = pos;
- elems->rsn_len = elen;
- break;
- case WLAN_EID_ERP_INFO:
- elems->erp_info = pos;
- elems->erp_info_len = elen;
- break;
- case WLAN_EID_EXT_SUPP_RATES:
- elems->ext_supp_rates = pos;
- elems->ext_supp_rates_len = elen;
- break;
- case WLAN_EID_HT_CAPABILITY:
- elems->ht_cap_elem = pos;
- elems->ht_cap_elem_len = elen;
- break;
- case WLAN_EID_HT_EXTRA_INFO:
- elems->ht_info_elem = pos;
- elems->ht_info_elem_len = elen;
- break;
- default:
- break;
- }
-
- left -= elen;
- pos += elen;
- }
-}
-
-
-static int ecw2cw(int ecw)
-{
- int cw = 1;
- while (ecw > 0) {
- cw <<= 1;
- ecw--;
- }
- return cw - 1;
-}
-
-static void ieee80211_sta_wmm_params(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- u8 *wmm_param, size_t wmm_param_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_queue_params params;
- size_t left;
- int count;
- u8 *pos;
-
- if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
- return;
- count = wmm_param[6] & 0x0f;
- if (count == ifsta->wmm_last_param_set)
- return;
- ifsta->wmm_last_param_set = count;
-
- pos = wmm_param + 8;
- left = wmm_param_len - 8;
-
- memset(¶ms, 0, sizeof(params));
-
- if (!local->ops->conf_tx)
- return;
-
- local->wmm_acm = 0;
- for (; left >= 4; left -= 4, pos += 4) {
- int aci = (pos[0] >> 5) & 0x03;
- int acm = (pos[0] >> 4) & 0x01;
- int queue;
-
- switch (aci) {
- case 1:
- queue = IEEE80211_TX_QUEUE_DATA3;
- if (acm) {
- local->wmm_acm |= BIT(0) | BIT(3);
- }
- break;
- case 2:
- queue = IEEE80211_TX_QUEUE_DATA1;
- if (acm) {
- local->wmm_acm |= BIT(4) | BIT(5);
- }
- break;
- case 3:
- queue = IEEE80211_TX_QUEUE_DATA0;
- if (acm) {
- local->wmm_acm |= BIT(6) | BIT(7);
- }
- break;
- case 0:
- default:
- queue = IEEE80211_TX_QUEUE_DATA2;
- if (acm) {
- local->wmm_acm |= BIT(1) | BIT(2);
- }
- break;
- }
-
- params.aifs = pos[0] & 0x0f;
- params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
- params.cw_min = ecw2cw(pos[1] & 0x0f);
- /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
- params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
- printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d burst=%d\n",
- dev->name, queue, aci, acm, params.aifs, params.cw_min,
- params.cw_max, params.burst_time);
- /* TODO: handle ACM (block TX, fallback to next lowest allowed
- * AC for now) */
- if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
- printk(KERN_DEBUG "%s: failed to set TX queue "
- "parameters for queue %d\n", dev->name, queue);
- }
- }
-}
-
-
-static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- int use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
- int preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0;
- u8 changes = 0;
- DECLARE_MAC_BUF(mac);
-
- if (use_protection != !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION)) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
- "%s)\n",
- dev->name,
- use_protection ? "enabled" : "disabled",
- print_mac(mac, ifsta->bssid));
- }
- if (use_protection)
- sdata->flags |= IEEE80211_SDATA_USE_PROTECTION;
- else
- sdata->flags &= ~IEEE80211_SDATA_USE_PROTECTION;
- changes |= IEEE80211_ERP_CHANGE_PROTECTION;
- }
-
- if (preamble_mode != !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: switched to %s barker preamble"
- " (BSSID=%s)\n",
- dev->name,
- (preamble_mode == WLAN_ERP_PREAMBLE_SHORT) ?
- "short" : "long",
- print_mac(mac, ifsta->bssid));
- }
- if (preamble_mode)
- sdata->flags &= ~IEEE80211_SDATA_SHORT_PREAMBLE;
- else
- sdata->flags |= IEEE80211_SDATA_SHORT_PREAMBLE;
- changes |= IEEE80211_ERP_CHANGE_PREAMBLE;
- }
-
- if (changes)
- ieee80211_erp_info_change_notify(dev, changes);
-}
-
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
- struct ieee80211_ht_info *ht_info)
-{
-
- if (ht_info == NULL)
- return -EINVAL;
-
- memset(ht_info, 0, sizeof(*ht_info));
-
- if (ht_cap_ie) {
- u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
- ht_info->ht_supported = 1;
- ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_info->ampdu_factor =
- ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
- ht_info->ampdu_density =
- (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
- memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
- } else
- ht_info->ht_supported = 0;
-
- return 0;
-}
-
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
- struct ieee80211_ht_addt_info *ht_add_info_ie,
- struct ieee80211_ht_bss_info *bss_info)
-{
- if (bss_info == NULL)
- return -EINVAL;
-
- memset(bss_info, 0, sizeof(*bss_info));
-
- if (ht_add_info_ie) {
- u16 op_mode;
- op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
-
- bss_info->primary_channel = ht_add_info_ie->control_chan;
- bss_info->bss_cap = ht_add_info_ie->ht_param;
- bss_info->bss_op_mode = (u8)(op_mode & 0xff);
- }
-
- return 0;
-}
-
-static void ieee80211_sta_send_associnfo(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- char *buf;
- size_t len;
- int i;
- union iwreq_data wrqu;
-
- if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
- return;
-
- buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
- ifsta->assocresp_ies_len), GFP_KERNEL);
- if (!buf)
- return;
-
- len = sprintf(buf, "ASSOCINFO(");
- if (ifsta->assocreq_ies) {
- len += sprintf(buf + len, "ReqIEs=");
- for (i = 0; i < ifsta->assocreq_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocreq_ies[i]);
- }
- }
- if (ifsta->assocresp_ies) {
- if (ifsta->assocreq_ies)
- len += sprintf(buf + len, " ");
- len += sprintf(buf + len, "RespIEs=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
- }
- len += sprintf(buf + len, ")");
-
- if (len > IW_CUSTOM_MAX) {
- len = sprintf(buf, "ASSOCRESPIE=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
- }
-
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = len;
- wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
-
- kfree(buf);
-}
-
-
-static void ieee80211_set_associated(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- bool assoc)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- union iwreq_data wrqu;
-
- if (!!(ifsta->flags & IEEE80211_STA_ASSOCIATED) == assoc)
- return;
-
- if (assoc) {
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_sta_bss *bss;
-
- ifsta->flags |= IEEE80211_STA_ASSOCIATED;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- return;
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- if (bss->has_erp_value)
- ieee80211_handle_erp_ie(dev, bss->erp_value);
- ieee80211_rx_bss_put(dev, bss);
- }
-
- netif_carrier_on(dev);
- ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
- memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
- memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
- ieee80211_sta_send_associnfo(dev, ifsta);
- } else {
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
-
- netif_carrier_off(dev);
- ieee80211_reset_erp_info(dev);
- memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
- }
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
- ifsta->last_probe = jiffies;
- ieee80211_led_assoc(local, assoc);
-}
-
-static void ieee80211_set_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, int deauth)
-{
- if (deauth)
- ifsta->auth_tries = 0;
- ifsta->assoc_tries = 0;
- ieee80211_set_associated(dev, ifsta, 0);
-}
-
-static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
- int encrypt)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_tx_packet_data *pkt_data;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- skb->dev = sdata->local->mdev;
- skb_set_mac_header(skb, 0);
- skb_set_network_header(skb, 0);
- skb_set_transport_header(skb, 0);
-
- pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
- memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
- pkt_data->ifindex = sdata->dev->ifindex;
- if (!encrypt)
- pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
-
- dev_queue_xmit(skb);
-}
-
-
-static void ieee80211_send_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- int transaction, u8 *extra, size_t extra_len,
- int encrypt)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
- memset(mgmt, 0, 24 + 6);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_AUTH);
- if (encrypt)
- mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
- mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
- ifsta->auth_transaction = transaction + 1;
- mgmt->u.auth.status_code = cpu_to_le16(0);
- if (extra)
- memcpy(skb_put(skb, extra_len), extra, extra_len);
-
- ieee80211_sta_tx(dev, skb, encrypt);
-}
-
-
-static void ieee80211_authenticate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->auth_tries++;
- if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
- printk(KERN_DEBUG "%s: authentication with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_AUTHENTICATE;
- printk(KERN_DEBUG "%s: authenticate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
-
- ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
-}
-
-
-static void ieee80211_send_assoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies;
- int i, len;
- u16 capab;
- struct ieee80211_sta_bss *bss;
- int wmm = 0;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
- ifsta->ssid_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mode = local->oper_hw_mode;
- capab = ifsta->capab;
- if (mode->mode == MODE_IEEE80211G) {
- capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
- WLAN_CAPABILITY_SHORT_PREAMBLE;
- }
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
- capab |= WLAN_CAPABILITY_PRIVACY;
- if (bss->wmm_ie) {
- wmm = 1;
- }
- ieee80211_rx_bss_put(dev, bss);
- }
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
- if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
- skb_put(skb, 10);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_REASSOC_REQ);
- mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
- memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
- ETH_ALEN);
- } else {
- skb_put(skb, 4);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ASSOC_REQ);
- mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
- }
-
- /* SSID */
- ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
-
- len = mode->num_rates;
- if (len > 8)
- len = 8;
- pos = skb_put(skb, len + 2);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = len;
- for (i = 0; i < len; i++) {
- int rate = mode->rates[i].rate;
- *pos++ = (u8) (rate / 5);
- }
-
- if (mode->num_rates > len) {
- pos = skb_put(skb, mode->num_rates - len + 2);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = mode->num_rates - len;
- for (i = len; i < mode->num_rates; i++) {
- int rate = mode->rates[i].rate;
- *pos++ = (u8) (rate / 5);
- }
- }
-
- if (ifsta->extra_ie) {
- pos = skb_put(skb, ifsta->extra_ie_len);
- memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
- }
-
- if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- pos = skb_put(skb, 9);
- *pos++ = WLAN_EID_VENDOR_SPECIFIC;
- *pos++ = 7; /* len */
- *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
- *pos++ = 0x50;
- *pos++ = 0xf2;
- *pos++ = 2; /* WME */
- *pos++ = 0; /* WME info */
- *pos++ = 1; /* WME ver */
- *pos++ = 0;
- }
- /* wmm support is a must to HT */
- if (wmm && mode->ht_info.ht_supported) {
- __le16 tmp = cpu_to_le16(mode->ht_info.cap);
- pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
- *pos++ = WLAN_EID_HT_CAPABILITY;
- *pos++ = sizeof(struct ieee80211_ht_cap);
- memset(pos, 0, sizeof(struct ieee80211_ht_cap));
- memcpy(pos, &tmp, sizeof(u16));
- pos += sizeof(u16);
- *pos++ = (mode->ht_info.ampdu_factor |
- (mode->ht_info.ampdu_density << 2));
- memcpy(pos, mode->ht_info.supp_mcs_set, 16);
- }
-
- kfree(ifsta->assocreq_ies);
- ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
- ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
- if (ifsta->assocreq_ies)
- memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static void ieee80211_send_deauth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DEAUTH);
- skb_put(skb, 2);
- mgmt->u.deauth.reason_code = cpu_to_le16(reason);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static void ieee80211_send_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DISASSOC);
- skb_put(skb, 2);
- mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static int ieee80211_privacy_mismatch(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- int bss_privacy;
- int wep_privacy;
- int privacy_invoked;
-
- if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
- return 0;
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- return 0;
-
- bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
- wep_privacy = !!ieee80211_sta_wep_configured(dev);
- privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
-
- ieee80211_rx_bss_put(dev, bss);
-
- if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
- return 0;
-
- return 1;
-}
-
-
-static void ieee80211_associate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->assoc_tries++;
- if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
- printk(KERN_DEBUG "%s: association with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_ASSOCIATE;
- printk(KERN_DEBUG "%s: associate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
- if (ieee80211_privacy_mismatch(dev, ifsta)) {
- printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
- "mixed-cell disabled - abort association\n", dev->name);
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ieee80211_send_assoc(dev, ifsta);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
-}
-
-
-static void ieee80211_associated(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- int disassoc;
- DECLARE_MAC_BUF(mac);
-
- /* TODO: start monitoring current AP signal quality and number of
- * missed beacons. Scan other channels every now and then and search
- * for better APs. */
- /* TODO: remove expired BSSes */
-
- ifsta->state = IEEE80211_ASSOCIATED;
-
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- } else {
- disassoc = 0;
- if (time_after(jiffies,
- sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
- if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
- printk(KERN_DEBUG "%s: No ProbeResp from "
- "current AP %s - assume out of "
- "range\n",
- dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- sta_info_free(sta);
- } else
- ieee80211_send_probe_req(dev, ifsta->bssid,
- local->scan_ssid,
- local->scan_ssid_len);
- ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
- } else {
- ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
- if (time_after(jiffies, ifsta->last_probe +
- IEEE80211_PROBE_INTERVAL)) {
- ifsta->last_probe = jiffies;
- ieee80211_send_probe_req(dev, ifsta->bssid,
- ifsta->ssid,
- ifsta->ssid_len);
- }
- }
- sta_info_put(sta);
- }
- if (disassoc) {
- ifsta->state = IEEE80211_DISABLED;
- ieee80211_set_associated(dev, ifsta, 0);
- } else {
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_MONITORING_INTERVAL);
- }
-}
-
-
-static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
- u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *supp_rates, *esupp_rates = NULL;
- int i;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
- "request\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_PROBE_REQ);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (dst) {
- memcpy(mgmt->da, dst, ETH_ALEN);
- memcpy(mgmt->bssid, dst, ETH_ALEN);
- } else {
- memset(mgmt->da, 0xff, ETH_ALEN);
- memset(mgmt->bssid, 0xff, ETH_ALEN);
- }
- pos = skb_put(skb, 2 + ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ssid_len;
- memcpy(pos, ssid, ssid_len);
-
- supp_rates = skb_put(skb, 2);
- supp_rates[0] = WLAN_EID_SUPP_RATES;
- supp_rates[1] = 0;
- mode = local->oper_hw_mode;
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
- if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
- continue;
- if (esupp_rates) {
- pos = skb_put(skb, 1);
- esupp_rates[1]++;
- } else if (supp_rates[1] == 8) {
- esupp_rates = skb_put(skb, 3);
- esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
- esupp_rates[1] = 1;
- pos = &esupp_rates[2];
- } else {
- pos = skb_put(skb, 1);
- supp_rates[1]++;
- }
- *pos = rate->rate / 5;
- }
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static int ieee80211_sta_wep_configured(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (!sdata || !sdata->default_key ||
- sdata->default_key->conf.alg != ALG_WEP)
- return 0;
- return 1;
-}
-
-
-static void ieee80211_auth_completed(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- printk(KERN_DEBUG "%s: authenticated\n", dev->name);
- ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
- ieee80211_associate(dev, ifsta);
-}
-
-
-static void ieee80211_auth_challenge(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u8 *pos;
- struct ieee802_11_elems elems;
-
- printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
- pos = mgmt->u.auth.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
- if (!elems.challenge) {
- printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
- "frame\n", dev->name);
- return;
- }
- ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
- elems.challenge_len + 2, 1);
-}
-
-static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
- u8 dialog_token, u16 status, u16 policy,
- u16 buf_size, u16 timeout)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 capab;
-
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer "
- "for addba resp frame\n", dev->name);
- return;
- }
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (sdata->type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
- mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
-
- capab = (u16)(policy << 1); /* bit 1 aggregation policy */
- capab |= (u16)(tid << 2); /* bit 5:2 TID number */
- capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
-
- mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
- mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
- mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
-
- ieee80211_sta_tx(dev, skb, 0);
-
- return;
-}
-
-static void ieee80211_sta_process_addba_request(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- u16 capab, tid, timeout, ba_policy, buf_size, status;
- u8 dialog_token;
-
- sta = sta_info_get(local, mgmt->sa);
- if (!sta)
- return;
-
- /* extract session parameters from addba request frame */
- dialog_token = mgmt->u.action.u.addba_req.dialog_token;
- timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
-
- capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
- ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
- buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
-
- /* TODO - currently aggregation is declined (A-MPDU add BA request
- * acceptance is not obligatory by 802.11n draft), but here is
- * the entry point for dealing with it */
-#ifdef MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "Add Block Ack request arrived,"
- " currently denying it\n");
-#endif /* MAC80211_HT_DEBUG */
-
- status = WLAN_STATUS_REQUEST_DECLINED;
-
- ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token,
- status, 1, buf_size, timeout);
- sta_info_put(sta);
-}
-
-static void ieee80211_rx_mgmt_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- u16 auth_alg, auth_transaction, status_code;
- DECLARE_MAC_BUF(mac);
-
- if (ifsta->state != IEEE80211_AUTHENTICATE &&
- sdata->type != IEEE80211_IF_TYPE_IBSS) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "%s, but not in authenticate state - ignored\n",
- dev->name, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (len < 24 + 6) {
- printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "unknown BSSID (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
- auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
- status_code = le16_to_cpu(mgmt->u.auth.status_code);
-
- printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d "
- "transaction=%d status=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), auth_alg,
- auth_transaction, status_code);
-
- if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
- /* IEEE 802.11 standard does not require authentication in IBSS
- * networks and most implementations do not seem to use it.
- * However, try to reply to authentication attempts if someone
- * has actually implemented this.
- * TODO: Could implement shared key authentication. */
- if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
- printk(KERN_DEBUG "%s: unexpected IBSS authentication "
- "frame (alg=%d transaction=%d)\n",
- dev->name, auth_alg, auth_transaction);
- return;
- }
- ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
- }
-
- if (auth_alg != ifsta->auth_alg ||
- auth_transaction != ifsta->auth_transaction) {
- printk(KERN_DEBUG "%s: unexpected authentication frame "
- "(alg=%d transaction=%d)\n",
- dev->name, auth_alg, auth_transaction);
- return;
- }
-
- if (status_code != WLAN_STATUS_SUCCESS) {
- printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
- "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
- if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
- u8 algs[3];
- const int num_algs = ARRAY_SIZE(algs);
- int i, pos;
- algs[0] = algs[1] = algs[2] = 0xff;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
- algs[0] = WLAN_AUTH_OPEN;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
- algs[1] = WLAN_AUTH_SHARED_KEY;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
- algs[2] = WLAN_AUTH_LEAP;
- if (ifsta->auth_alg == WLAN_AUTH_OPEN)
- pos = 0;
- else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
- pos = 1;
- else
- pos = 2;
- for (i = 0; i < num_algs; i++) {
- pos++;
- if (pos >= num_algs)
- pos = 0;
- if (algs[pos] == ifsta->auth_alg ||
- algs[pos] == 0xff)
- continue;
- if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
- !ieee80211_sta_wep_configured(dev))
- continue;
- ifsta->auth_alg = algs[pos];
- printk(KERN_DEBUG "%s: set auth_alg=%d for "
- "next try\n",
- dev->name, ifsta->auth_alg);
- break;
- }
- }
- return;
- }
-
- switch (ifsta->auth_alg) {
- case WLAN_AUTH_OPEN:
- case WLAN_AUTH_LEAP:
- ieee80211_auth_completed(dev, ifsta);
- break;
- case WLAN_AUTH_SHARED_KEY:
- if (ifsta->auth_transaction == 4)
- ieee80211_auth_completed(dev, ifsta);
- else
- ieee80211_auth_challenge(dev, ifsta, mgmt, len);
- break;
- }
-}
-
-
-static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u16 reason_code;
- DECLARE_MAC_BUF(mac);
-
- if (len < 24 + 2) {
- printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: deauthentication frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
-
- printk(KERN_DEBUG "%s: RX deauthentication from %s"
- " (reason=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), reason_code);
-
- if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) {
- printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
- }
-
- if (ifsta->state == IEEE80211_AUTHENTICATE ||
- ifsta->state == IEEE80211_ASSOCIATE ||
- ifsta->state == IEEE80211_ASSOCIATED) {
- ifsta->state = IEEE80211_AUTHENTICATE;
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_RETRY_AUTH_INTERVAL);
- }
-
- ieee80211_set_disassoc(dev, ifsta, 1);
- ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
-}
-
-
-static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u16 reason_code;
- DECLARE_MAC_BUF(mac);
-
- if (len < 24 + 2) {
- printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: disassociation frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
-
- printk(KERN_DEBUG "%s: RX disassociation from %s"
- " (reason=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), reason_code);
-
- if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
- printk(KERN_DEBUG "%s: disassociated\n", dev->name);
-
- if (ifsta->state == IEEE80211_ASSOCIATED) {
- ifsta->state = IEEE80211_ASSOCIATE;
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_RETRY_AUTH_INTERVAL);
- }
-
- ieee80211_set_disassoc(dev, ifsta, 0);
-}
-
-
-static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- int reassoc)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
- struct sta_info *sta;
- u32 rates;
- u16 capab_info, status_code, aid;
- struct ieee802_11_elems elems;
- u8 *pos;
- int i, j;
- DECLARE_MAC_BUF(mac);
-
- /* AssocResp and ReassocResp have identical structure, so process both
- * of them in this function. */
-
- if (ifsta->state != IEEE80211_ASSOCIATE) {
- printk(KERN_DEBUG "%s: association frame received from "
- "%s, but not in associate state - ignored\n",
- dev->name, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (len < 24 + 6) {
- printk(KERN_DEBUG "%s: too short (%zd) association frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: association frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
- status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
- aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
-
- printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
- "status=%d aid=%d)\n",
- dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
- capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
-
- if (status_code != WLAN_STATUS_SUCCESS) {
- printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
- dev->name, status_code);
- /* if this was a reassociation, ensure we try a "full"
- * association next time. This works around some broken APs
- * which do not correctly reject reassociation requests. */
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- return;
- }
-
- if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
- printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
- "set\n", dev->name, aid);
- aid &= ~(BIT(15) | BIT(14));
-
- pos = mgmt->u.assoc_resp.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
-
- if (!elems.supp_rates) {
- printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
- dev->name);
- return;
- }
-
- /* it probably doesn't, but if the frame includes an ERP value then
- * update our stored copy */
- if (elems.erp_info && elems.erp_info_len >= 1) {
- struct ieee80211_sta_bss *bss
- = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- bss->erp_value = elems.erp_info[0];
- bss->has_erp_value = 1;
- ieee80211_rx_bss_put(dev, bss);
- }
- }
-
- printk(KERN_DEBUG "%s: associated\n", dev->name);
- ifsta->aid = aid;
- ifsta->ap_capab = capab_info;
-
- kfree(ifsta->assocresp_ies);
- ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
- ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
- if (ifsta->assocresp_ies)
- memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
-
- ieee80211_set_associated(dev, ifsta, 1);
-
- /* Add STA entry for the AP */
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- struct ieee80211_sta_bss *bss;
- sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL);
- if (!sta) {
- printk(KERN_DEBUG "%s: failed to add STA entry for the"
- " AP\n", dev->name);
- return;
- }
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- sta->last_rssi = bss->rssi;
- sta->last_signal = bss->signal;
- sta->last_noise = bss->noise;
- ieee80211_rx_bss_put(dev, bss);
- }
- }
-
- sta->dev = dev;
- sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP;
-
- rates = 0;
- mode = local->oper_hw_mode;
- for (i = 0; i < elems.supp_rates_len; i++) {
- int rate = (elems.supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == rate)
- rates |= BIT(j);
- }
- for (i = 0; i < elems.ext_supp_rates_len; i++) {
- int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == rate)
- rates |= BIT(j);
- }
- sta->supp_rates = rates;
-
- if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
- local->ops->conf_ht) {
- struct ieee80211_ht_bss_info bss_info;
-
- ieee80211_ht_cap_ie_to_ht_info(
- (struct ieee80211_ht_cap *)
- elems.ht_cap_elem, &sta->ht_info);
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info);
- }
-
- rate_control_rate_init(sta, local);
-
- if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- sta->flags |= WLAN_STA_WME;
- ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
- elems.wmm_param_len);
- }
-
-
- sta_info_put(sta);
-
- ieee80211_associated(dev, ifsta);
-}
-
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
- local->sta_bss_hash[STA_HASH(bss->bssid)] = bss;
-}
-
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *b, *prev = NULL;
- b = local->sta_bss_hash[STA_HASH(bss->bssid)];
- while (b) {
- if (b == bss) {
- if (!prev)
- local->sta_bss_hash[STA_HASH(bss->bssid)] =
- bss->hnext;
- else
- prev->hnext = bss->hnext;
- break;
- }
- prev = b;
- b = b->hnext;
- }
-}
-
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
- atomic_inc(&bss->users);
- atomic_inc(&bss->users);
- memcpy(bss->bssid, bssid, ETH_ALEN);
- bss->channel = channel;
- if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
- memcpy(bss->ssid, ssid, ssid_len);
- bss->ssid_len = ssid_len;
- }
-
- spin_lock_bh(&local->sta_bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->sta_bss_list);
- __ieee80211_rx_bss_hash_add(dev, bss);
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- bss = local->sta_bss_hash[STA_HASH(bssid)];
- while (bss) {
- if (!memcmp(bss->bssid, bssid, ETH_ALEN) &&
- bss->channel == channel &&
- bss->ssid_len == ssid_len &&
- (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-
-static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
-{
- kfree(bss->wpa_ie);
- kfree(bss->rsn_ie);
- kfree(bss->wmm_ie);
- kfree(bss->ht_ie);
- kfree(bss);
-}
-
-
-static void ieee80211_rx_bss_put(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- if (!atomic_dec_and_test(&bss->users))
- return;
-
- spin_lock_bh(&local->sta_bss_lock);
- __ieee80211_rx_bss_hash_del(dev, bss);
- list_del(&bss->list);
- spin_unlock_bh(&local->sta_bss_lock);
- ieee80211_rx_bss_free(bss);
-}
-
-
-void ieee80211_rx_bss_list_init(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- spin_lock_init(&local->sta_bss_lock);
- INIT_LIST_HEAD(&local->sta_bss_list);
-}
-
-
-void ieee80211_rx_bss_list_deinit(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss, *tmp;
-
- list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
- ieee80211_rx_bss_put(dev, bss);
-}
-
-
-static void ieee80211_rx_bss_info(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status,
- int beacon)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee802_11_elems elems;
- size_t baselen;
- int channel, clen;
- struct ieee80211_sta_bss *bss;
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- u64 timestamp;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
-
- if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
- return; /* ignore ProbeResp to foreign address */
-
-#if 0
- printk(KERN_DEBUG "%s: RX %s from %s to %s\n",
- dev->name, beacon ? "Beacon" : "Probe Response",
- print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da));
-#endif
-
- baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
- if (baselen > len)
- return;
-
- timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
-
- if (sdata->type == IEEE80211_IF_TYPE_IBSS && beacon &&
- memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- static unsigned long last_tsf_debug = 0;
- u64 tsf;
- if (local->ops->get_tsf)
- tsf = local->ops->get_tsf(local_to_hw(local));
- else
- tsf = -1LLU;
- if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
- printk(KERN_DEBUG "RX beacon SA=%s BSSID="
- "%s TSF=0x%llx BCN=0x%llx diff=%lld "
- "@%lu\n",
- print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->bssid),
- (unsigned long long)tsf,
- (unsigned long long)timestamp,
- (unsigned long long)(tsf - timestamp),
- jiffies);
- last_tsf_debug = jiffies;
- }
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- }
-
- ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
-
- if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
- memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
- (sta = sta_info_get(local, mgmt->sa))) {
- struct ieee80211_hw_mode *mode;
- struct ieee80211_rate *rates;
- size_t num_rates;
- u32 supp_rates, prev_rates;
- int i, j;
-
- mode = local->sta_sw_scanning ?
- local->scan_hw_mode : local->oper_hw_mode;
-
- if (local->sta_hw_scanning) {
- /* search for the correct mode matches the beacon */
- list_for_each_entry(mode, &local->modes_list, list)
- if (mode->mode == rx_status->phymode)
- break;
-
- if (mode == NULL)
- mode = local->oper_hw_mode;
- }
- rates = mode->rates;
- num_rates = mode->num_rates;
-
- supp_rates = 0;
- for (i = 0; i < elems.supp_rates_len +
- elems.ext_supp_rates_len; i++) {
- u8 rate = 0;
- int own_rate;
- if (i < elems.supp_rates_len)
- rate = elems.supp_rates[i];
- else if (elems.ext_supp_rates)
- rate = elems.ext_supp_rates
- [i - elems.supp_rates_len];
- own_rate = 5 * (rate & 0x7f);
- for (j = 0; j < num_rates; j++)
- if (rates[j].rate == own_rate)
- supp_rates |= BIT(j);
- }
-
- prev_rates = sta->supp_rates;
- sta->supp_rates &= supp_rates;
- if (sta->supp_rates == 0) {
- /* No matching rates - this should not really happen.
- * Make sure that at least one rate is marked
- * supported to avoid issues with TX rate ctrl. */
- sta->supp_rates = sdata->u.sta.supp_rates_bits;
- }
- if (sta->supp_rates != prev_rates) {
- printk(KERN_DEBUG "%s: updated supp_rates set for "
- "%s based on beacon info (0x%x & 0x%x -> "
- "0x%x)\n",
- dev->name, print_mac(mac, sta->addr), prev_rates,
- supp_rates, sta->supp_rates);
- }
- sta_info_put(sta);
- }
-
- if (!elems.ssid)
- return;
-
- if (elems.ds_params && elems.ds_params_len == 1)
- channel = elems.ds_params[0];
- else
- channel = rx_status->channel;
-
- bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel,
- elems.ssid, elems.ssid_len);
- if (!bss) {
- bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel,
- elems.ssid, elems.ssid_len);
- if (!bss)
- return;
- } else {
-#if 0
- /* TODO: order by RSSI? */
- spin_lock_bh(&local->sta_bss_lock);
- list_move_tail(&bss->list, &local->sta_bss_list);
- spin_unlock_bh(&local->sta_bss_lock);
-#endif
- }
-
- if (bss->probe_resp && beacon) {
- /* Do not allow beacon to override data from Probe Response. */
- ieee80211_rx_bss_put(dev, bss);
- return;
- }
-
- /* save the ERP value so that it is available at association time */
- if (elems.erp_info && elems.erp_info_len >= 1) {
- bss->erp_value = elems.erp_info[0];
- bss->has_erp_value = 1;
- }
-
- bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
- bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-
- bss->supp_rates_len = 0;
- if (elems.supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems.supp_rates_len)
- clen = elems.supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
- clen);
- bss->supp_rates_len += clen;
- }
- if (elems.ext_supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems.ext_supp_rates_len)
- clen = elems.ext_supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len],
- elems.ext_supp_rates, clen);
- bss->supp_rates_len += clen;
- }
-
- if (elems.wpa &&
- (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
- memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
- kfree(bss->wpa_ie);
- bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
- if (bss->wpa_ie) {
- memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
- bss->wpa_ie_len = elems.wpa_len + 2;
- } else
- bss->wpa_ie_len = 0;
- } else if (!elems.wpa && bss->wpa_ie) {
- kfree(bss->wpa_ie);
- bss->wpa_ie = NULL;
- bss->wpa_ie_len = 0;
- }
-
- if (elems.rsn &&
- (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
- memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
- kfree(bss->rsn_ie);
- bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
- if (bss->rsn_ie) {
- memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
- bss->rsn_ie_len = elems.rsn_len + 2;
- } else
- bss->rsn_ie_len = 0;
- } else if (!elems.rsn && bss->rsn_ie) {
- kfree(bss->rsn_ie);
- bss->rsn_ie = NULL;
- bss->rsn_ie_len = 0;
- }
-
- if (elems.wmm_param &&
- (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
- memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
- kfree(bss->wmm_ie);
- bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
- if (bss->wmm_ie) {
- memcpy(bss->wmm_ie, elems.wmm_param - 2,
- elems.wmm_param_len + 2);
- bss->wmm_ie_len = elems.wmm_param_len + 2;
- } else
- bss->wmm_ie_len = 0;
- } else if (!elems.wmm_param && bss->wmm_ie) {
- kfree(bss->wmm_ie);
- bss->wmm_ie = NULL;
- bss->wmm_ie_len = 0;
- }
- if (elems.ht_cap_elem &&
- (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
- memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
- kfree(bss->ht_ie);
- bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
- if (bss->ht_ie) {
- memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
- elems.ht_cap_elem_len + 2);
- bss->ht_ie_len = elems.ht_cap_elem_len + 2;
- } else
- bss->ht_ie_len = 0;
- } else if (!elems.ht_cap_elem && bss->ht_ie) {
- kfree(bss->ht_ie);
- bss->ht_ie = NULL;
- bss->ht_ie_len = 0;
- }
-
- bss->hw_mode = rx_status->phymode;
- bss->freq = rx_status->freq;
- if (channel != rx_status->channel &&
- (bss->hw_mode == MODE_IEEE80211G ||
- bss->hw_mode == MODE_IEEE80211B) &&
- channel >= 1 && channel <= 14) {
- static const int freq_list[] = {
- 2412, 2417, 2422, 2427, 2432, 2437, 2442,
- 2447, 2452, 2457, 2462, 2467, 2472, 2484
- };
- /* IEEE 802.11g/b mode can receive packets from neighboring
- * channels, so map the channel into frequency. */
- bss->freq = freq_list[channel - 1];
- }
- bss->timestamp = timestamp;
- bss->last_update = jiffies;
- bss->rssi = rx_status->ssi;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- if (!beacon)
- bss->probe_resp++;
- ieee80211_rx_bss_put(dev, bss);
-}
-
-
-static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
-}
-
-
-static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- size_t baselen;
- struct ieee802_11_elems elems;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_conf *conf = &local->hw.conf;
-
- ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- return;
- ifsta = &sdata->u.sta;
-
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
- return;
-
- /* Process beacon from the current BSS */
- baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
- if (baselen > len)
- return;
-
- ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
-
- if (elems.erp_info && elems.erp_info_len >= 1)
- ieee80211_handle_erp_ie(dev, elems.erp_info[0]);
-
- if (elems.ht_cap_elem && elems.ht_info_elem &&
- elems.wmm_param && local->ops->conf_ht &&
- conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
- struct ieee80211_ht_bss_info bss_info;
-
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- /* check if AP changed bss inforamation */
- if ((conf->ht_bss_conf.primary_channel !=
- bss_info.primary_channel) ||
- (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) ||
- (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode))
- ieee80211_hw_config_ht(local, 1, &conf->ht_conf,
- &bss_info);
- }
-
- if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
- elems.wmm_param_len);
- }
-}
-
-
-static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int tx_last_beacon;
- struct sk_buff *skb;
- struct ieee80211_mgmt *resp;
- u8 *pos, *end;
- DECLARE_MAC_BUF(mac);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- DECLARE_MAC_BUF(mac2);
- DECLARE_MAC_BUF(mac3);
-#endif
-
- if (sdata->type != IEEE80211_IF_TYPE_IBSS ||
- ifsta->state != IEEE80211_IBSS_JOINED ||
- len < 24 + 2 || !ifsta->probe_resp)
- return;
-
- if (local->ops->tx_last_beacon)
- tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
- else
- tx_last_beacon = 1;
-
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
- "%s (tx_last_beacon=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
- print_mac(mac3, mgmt->bssid), tx_last_beacon);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
-
- if (!tx_last_beacon)
- return;
-
- if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
- memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
- return;
-
- end = ((u8 *) mgmt) + len;
- pos = mgmt->u.probe_req.variable;
- if (pos[0] != WLAN_EID_SSID ||
- pos + 2 + pos[1] > end) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
- "from %s\n",
- dev->name, print_mac(mac, mgmt->sa));
- }
- return;
- }
- if (pos[1] != 0 &&
- (pos[1] != ifsta->ssid_len ||
- memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
- /* Ignore ProbeReq for foreign SSID */
- return;
- }
-
- /* Reply with ProbeResp */
- skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
- if (!skb)
- return;
-
- resp = (struct ieee80211_mgmt *) skb->data;
- memcpy(resp->da, mgmt->sa, ETH_ALEN);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
- dev->name, print_mac(mac, resp->da));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-void ieee80211_rx_mgmt_action(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- if (len < IEEE80211_MIN_ACTION_SIZE)
- return;
-
- switch (mgmt->u.action.category) {
- case WLAN_CATEGORY_BACK:
- switch (mgmt->u.action.u.addba_req.action_code) {
- case WLAN_ACTION_ADDBA_REQ:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.addba_req)))
- break;
- ieee80211_sta_process_addba_request(dev, mgmt, len);
- break;
- default:
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: received unsupported BACK\n",
- dev->name);
- break;
- }
- break;
- default:
- break;
- }
-}
-
-void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- if (skb->len < 24)
- goto fail;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- switch (fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_PROBE_REQ:
- case IEEE80211_STYPE_PROBE_RESP:
- case IEEE80211_STYPE_BEACON:
- memcpy(skb->cb, rx_status, sizeof(*rx_status));
- case IEEE80211_STYPE_AUTH:
- case IEEE80211_STYPE_ASSOC_RESP:
- case IEEE80211_STYPE_REASSOC_RESP:
- case IEEE80211_STYPE_DEAUTH:
- case IEEE80211_STYPE_DISASSOC:
- case IEEE80211_STYPE_ACTION:
- skb_queue_tail(&ifsta->skb_queue, skb);
- queue_work(local->hw.workqueue, &ifsta->work);
- return;
- default:
- printk(KERN_DEBUG "%s: received unknown management frame - "
- "stype=%d\n", dev->name,
- (fc & IEEE80211_FCTL_STYPE) >> 4);
- break;
- }
-
- fail:
- kfree_skb(skb);
-}
-
-
-static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
- struct sk_buff *skb)
-{
- struct ieee80211_rx_status *rx_status;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- rx_status = (struct ieee80211_rx_status *) skb->cb;
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- switch (fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_PROBE_REQ:
- ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
- rx_status);
- break;
- case IEEE80211_STYPE_PROBE_RESP:
- ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_BEACON:
- ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_AUTH:
- ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 0);
- break;
- case IEEE80211_STYPE_REASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 1);
- break;
- case IEEE80211_STYPE_DEAUTH:
- ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_DISASSOC:
- ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ACTION:
- ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len);
- break;
- }
-
- kfree_skb(skb);
-}
-
-
-ieee80211_txrx_result
-ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- if (skb->len < 2)
- return TXRX_DROP;
-
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL)
- return TXRX_CONTINUE;
-
- if (skb->len < 24)
- return TXRX_DROP;
-
- if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
- if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
- ieee80211_rx_mgmt_probe_resp(dev, mgmt,
- skb->len, rx_status);
- dev_kfree_skb(skb);
- return TXRX_QUEUED;
- } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
- ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
- rx_status);
- dev_kfree_skb(skb);
- return TXRX_QUEUED;
- }
- }
- return TXRX_CONTINUE;
-}
-
-
-static int ieee80211_sta_active_ibss(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int active = 0;
- struct sta_info *sta;
-
- read_lock_bh(&local->sta_lock);
- list_for_each_entry(sta, &local->sta_list, list) {
- if (sta->dev == dev &&
- time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
- jiffies)) {
- active++;
- break;
- }
- }
- read_unlock_bh(&local->sta_lock);
-
- return active;
-}
-
-
-static void ieee80211_sta_expire(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta, *tmp;
- LIST_HEAD(tmp_list);
- DECLARE_MAC_BUF(mac);
-
- write_lock_bh(&local->sta_lock);
- list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
- if (time_after(jiffies, sta->last_rx +
- IEEE80211_IBSS_INACTIVITY_LIMIT)) {
- printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
- dev->name, print_mac(mac, sta->addr));
- __sta_info_get(sta);
- sta_info_remove(sta);
- list_add(&sta->list, &tmp_list);
- }
- write_unlock_bh(&local->sta_lock);
-
- list_for_each_entry_safe(sta, tmp, &tmp_list, list) {
- sta_info_free(sta);
- sta_info_put(sta);
- }
-}
-
-
-static void ieee80211_sta_merge_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_sta_expire(dev);
- if (ieee80211_sta_active_ibss(dev))
- return;
-
- printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
- "IBSS networks with same SSID (merge)\n", dev->name);
- ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
-}
-
-
-void ieee80211_sta_timer(unsigned long data)
-{
- struct ieee80211_sub_if_data *sdata =
- (struct ieee80211_sub_if_data *) data;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(&sdata->wdev);
-
- set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
-}
-
-
-void ieee80211_sta_work(void *ptr)
-{
- struct net_device *dev = ptr;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_sta *ifsta;
- struct sk_buff *skb;
-
- if (!netif_running(dev))
- return;
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return;
-
- if (sdata->type != IEEE80211_IF_TYPE_STA &&
- sdata->type != IEEE80211_IF_TYPE_IBSS) {
- printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
- "(type=%d)\n", dev->name, sdata->type);
- return;
- }
- ifsta = &sdata->u.sta;
-
- while ((skb = skb_dequeue(&ifsta->skb_queue)))
- ieee80211_sta_rx_queued_mgmt(dev, skb);
-
- if (ifsta->state != IEEE80211_AUTHENTICATE &&
- ifsta->state != IEEE80211_ASSOCIATE &&
- test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- if (ifsta->scan_ssid_len)
- ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
- else
- ieee80211_sta_start_scan(dev, NULL, 0);
- return;
- }
-
- if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
- if (ieee80211_sta_config_auth(dev, ifsta))
- return;
- clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
- return;
-
- switch (ifsta->state) {
- case IEEE80211_DISABLED:
- break;
- case IEEE80211_AUTHENTICATE:
- ieee80211_authenticate(dev, ifsta);
- break;
- case IEEE80211_ASSOCIATE:
- ieee80211_associate(dev, ifsta);
- break;
- case IEEE80211_ASSOCIATED:
- ieee80211_associated(dev, ifsta);
- break;
- case IEEE80211_IBSS_SEARCH:
- ieee80211_sta_find_ibss(dev, ifsta);
- break;
- case IEEE80211_IBSS_JOINED:
- ieee80211_sta_merge_ibss(dev, ifsta);
- break;
- default:
- printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
- ifsta->state);
- break;
- }
-
- if (ieee80211_privacy_mismatch(dev, ifsta)) {
- printk(KERN_DEBUG "%s: privacy configuration mismatch and "
- "mixed-cell disabled - disassociate\n", dev->name);
-
- ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
- ieee80211_set_disassoc(dev, ifsta, 0);
- }
-}
-
-
-static void ieee80211_sta_reset_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
- }
-
- ifsta->wmm_last_param_set = -1; /* allow any WMM update */
-
-
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
- ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
- ifsta->auth_alg = WLAN_AUTH_LEAP;
- else
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
- ifsta->auth_alg);
- ifsta->auth_transaction = -1;
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- ifsta->auth_tries = ifsta->assoc_tries = 0;
- netif_carrier_off(dev);
-}
-
-
-void ieee80211_sta_req_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- return;
-
- if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
- IEEE80211_STA_AUTO_BSSID_SEL)) &&
- (ifsta->flags & (IEEE80211_STA_SSID_SET |
- IEEE80211_STA_AUTO_SSID_SEL))) {
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
- }
-}
-
-static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
- const char *ssid, int ssid_len)
-{
- int tmp, hidden_ssid;
-
- if (ssid_len == ifsta->ssid_len &&
- !memcmp(ifsta->ssid, ssid, ssid_len))
- return 1;
-
- if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
- return 0;
-
- hidden_ssid = 1;
- tmp = ssid_len;
- while (tmp--) {
- if (ssid[tmp] != '\0') {
- hidden_ssid = 0;
- break;
- }
- }
-
- if (hidden_ssid && ifsta->ssid_len == ssid_len)
- return 1;
-
- if (ssid_len == 1 && ssid[0] == ' ')
- return 1;
-
- return 0;
-}
-
-static int ieee80211_sta_config_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_sta_bss *bss, *selected = NULL;
- int top_rssi = 0, freq;
-
- if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
- IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) {
- ifsta->state = IEEE80211_AUTHENTICATE;
- ieee80211_sta_reset_auth(dev, ifsta);
- return 0;
- }
-
- spin_lock_bh(&local->sta_bss_lock);
- freq = local->oper_channel->freq;
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (!(bss->capability & WLAN_CAPABILITY_ESS))
- continue;
-
- if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
- !!sdata->default_key)
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
- bss->freq != freq)
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
- memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
- !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
- continue;
-
- if (!selected || top_rssi < bss->rssi) {
- selected = bss;
- top_rssi = bss->rssi;
- }
- }
- if (selected)
- atomic_inc(&selected->users);
- spin_unlock_bh(&local->sta_bss_lock);
-
- if (selected) {
- ieee80211_set_channel(local, -1, selected->freq);
- if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
- ieee80211_sta_set_ssid(dev, selected->ssid,
- selected->ssid_len);
- ieee80211_sta_set_bssid(dev, selected->bssid);
- ieee80211_rx_bss_put(dev, selected);
- ifsta->state = IEEE80211_AUTHENTICATE;
- ieee80211_sta_reset_auth(dev, ifsta);
- return 0;
- } else {
- if (ifsta->state != IEEE80211_AUTHENTICATE) {
- if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_sta_start_scan(dev, NULL, 0);
- else
- ieee80211_sta_start_scan(dev, ifsta->ssid,
- ifsta->ssid_len);
- ifsta->state = IEEE80211_AUTHENTICATE;
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- } else
- ifsta->state = IEEE80211_DISABLED;
- }
- return -1;
-}
-
-static int ieee80211_sta_join_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int res, rates, i, j;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- struct ieee80211_tx_control control;
- struct ieee80211_rate *rate;
- struct ieee80211_hw_mode *mode;
- struct rate_control_extra extra;
- u8 *pos;
- struct ieee80211_sub_if_data *sdata;
-
- /* Remove possible STA entries from other IBSS networks. */
- sta_info_flush(local, NULL);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
- }
- memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
- res = ieee80211_if_config(dev);
- if (res)
- return res;
-
- local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- sdata->drop_unencrypted = bss->capability &
- WLAN_CAPABILITY_PRIVACY ? 1 : 0;
-
- res = ieee80211_set_channel(local, -1, bss->freq);
-
- if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
- printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
- "(%d MHz)\n", dev->name, local->hw.conf.channel,
- local->hw.conf.freq);
- return -1;
- }
-
- /* Set beacon template based on scan results */
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
- do {
- if (!skb)
- break;
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *)
- skb_put(skb, 24 + sizeof(mgmt->u.beacon));
- memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_BEACON);
- memset(mgmt->da, 0xff, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.beacon.beacon_int =
- cpu_to_le16(local->hw.conf.beacon_int);
- mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
-
- pos = skb_put(skb, 2 + ifsta->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
-
- rates = bss->supp_rates_len;
- if (rates > 8)
- rates = 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, bss->supp_rates, rates);
-
- pos = skb_put(skb, 2 + 1);
- *pos++ = WLAN_EID_DS_PARAMS;
- *pos++ = 1;
- *pos++ = bss->channel;
-
- pos = skb_put(skb, 2 + 2);
- *pos++ = WLAN_EID_IBSS_PARAMS;
- *pos++ = 2;
- /* FIX: set ATIM window based on scan results */
- *pos++ = 0;
- *pos++ = 0;
-
- if (bss->supp_rates_len > 8) {
- rates = bss->supp_rates_len - 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, &bss->supp_rates[8], rates);
- }
-
- memset(&control, 0, sizeof(control));
- memset(&extra, 0, sizeof(extra));
- extra.mode = local->oper_hw_mode;
- rate = rate_control_get_rate(local, dev, skb, &extra);
- if (!rate) {
- printk(KERN_DEBUG "%s: Failed to determine TX rate "
- "for IBSS beacon\n", dev->name);
- break;
- }
- control.tx_rate =
- ((sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) &&
- (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
- rate->val2 : rate->val;
- control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control.power_level = local->hw.conf.power_level;
- control.flags |= IEEE80211_TXCTL_NO_ACK;
- control.retry_limit = 1;
-
- ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
- if (ifsta->probe_resp) {
- mgmt = (struct ieee80211_mgmt *)
- ifsta->probe_resp->data;
- mgmt->frame_control =
- IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_PROBE_RESP);
- } else {
- printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
- "template for IBSS\n", dev->name);
- }
-
- if (local->ops->beacon_update &&
- local->ops->beacon_update(local_to_hw(local),
- skb, &control) == 0) {
- printk(KERN_DEBUG "%s: Configured IBSS beacon "
- "template based on scan results\n", dev->name);
- skb = NULL;
- }
-
- rates = 0;
- mode = local->oper_hw_mode;
- for (i = 0; i < bss->supp_rates_len; i++) {
- int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == bitrate)
- rates |= BIT(j);
- }
- ifsta->supp_rates_bits = rates;
- } while (0);
-
- if (skb) {
- printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
- "template\n", dev->name);
- dev_kfree_skb(skb);
- }
-
- ifsta->state = IEEE80211_IBSS_JOINED;
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_rx_bss_put(dev, bss);
-
- return res;
-}
-
-
-static int ieee80211_sta_create_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_hw_mode *mode;
- u8 bssid[ETH_ALEN], *pos;
- int i;
- DECLARE_MAC_BUF(mac);
-
-#if 0
- /* Easier testing, use fixed BSSID. */
- memset(bssid, 0xfe, ETH_ALEN);
-#else
- /* Generate random, not broadcast, locally administered BSSID. Mix in
- * own MAC address to make sure that devices that do not have proper
- * random number generator get different BSSID. */
- get_random_bytes(bssid, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- bssid[i] ^= dev->dev_addr[i];
- bssid[0] &= ~0x01;
- bssid[0] |= 0x02;
-#endif
-
- printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
- dev->name, print_mac(mac, bssid));
-
- bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel,
- sdata->u.sta.ssid, sdata->u.sta.ssid_len);
- if (!bss)
- return -ENOMEM;
-
- mode = local->oper_hw_mode;
-
- if (local->hw.conf.beacon_int == 0)
- local->hw.conf.beacon_int = 100;
- bss->beacon_int = local->hw.conf.beacon_int;
- bss->hw_mode = local->hw.conf.phymode;
- bss->freq = local->hw.conf.freq;
- bss->last_update = jiffies;
- bss->capability = WLAN_CAPABILITY_IBSS;
- if (sdata->default_key) {
- bss->capability |= WLAN_CAPABILITY_PRIVACY;
- } else
- sdata->drop_unencrypted = 0;
- bss->supp_rates_len = mode->num_rates;
- pos = bss->supp_rates;
- for (i = 0; i < mode->num_rates; i++) {
- int rate = mode->rates[i].rate;
- *pos++ = (u8) (rate / 5);
- }
-
- return ieee80211_sta_join_ibss(dev, ifsta, bss);
-}
-
-
-static int ieee80211_sta_find_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- int found = 0;
- u8 bssid[ETH_ALEN];
- int active_ibss;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
-
- if (ifsta->ssid_len == 0)
- return -EINVAL;
-
- active_ibss = ieee80211_sta_active_ibss(dev);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
- dev->name, active_ibss);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- spin_lock_bh(&local->sta_bss_lock);
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (ifsta->ssid_len != bss->ssid_len ||
- memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
- || !(bss->capability & WLAN_CAPABILITY_IBSS))
- continue;
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " bssid=%s found\n",
- print_mac(mac, bss->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- memcpy(bssid, bss->bssid, ETH_ALEN);
- found = 1;
- if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
- break;
- }
- spin_unlock_bh(&local->sta_bss_lock);
-
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " sta_find_ibss: selected %s current "
- "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
- (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel,
- ifsta->ssid, ifsta->ssid_len))) {
- printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
- " based on configured SSID\n",
- dev->name, print_mac(mac, bssid));
- return ieee80211_sta_join_ibss(dev, ifsta, bss);
- }
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " did not try to join ibss\n");
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
-
- /* Selected IBSS not found in current scan results - try to scan */
- if (ifsta->state == IEEE80211_IBSS_JOINED &&
- !ieee80211_sta_active_ibss(dev)) {
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_IBSS_MERGE_INTERVAL);
- } else if (time_after(jiffies, local->last_scan_completed +
- IEEE80211_SCAN_INTERVAL)) {
- printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
- "join\n", dev->name);
- return ieee80211_sta_req_scan(dev, ifsta->ssid,
- ifsta->ssid_len);
- } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
- int interval = IEEE80211_SCAN_INTERVAL;
-
- if (time_after(jiffies, ifsta->ibss_join_req +
- IEEE80211_IBSS_JOIN_TIMEOUT)) {
- if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
- local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
- return ieee80211_sta_create_ibss(dev, ifsta);
- if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on the"
- " configured channel %d (%d MHz)\n",
- dev->name, local->hw.conf.channel,
- local->hw.conf.freq);
- }
-
- /* No IBSS found - decrease scan interval and continue
- * scanning. */
- interval = IEEE80211_SCAN_INTERVAL_SLOW;
- }
-
- ifsta->state = IEEE80211_IBSS_SEARCH;
- mod_timer(&ifsta->timer, jiffies + interval);
- return 0;
- }
-
- return 0;
-}
-
-
-int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
-
- /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
- * not defined. */
- if (local->ops->conf_tx) {
- struct ieee80211_tx_queue_params qparam;
- int i;
-
- memset(&qparam, 0, sizeof(qparam));
- /* TODO: are these ok defaults for all hw_modes? */
- qparam.aifs = 2;
- qparam.cw_min =
- local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
- qparam.cw_max = 1023;
- qparam.burst_time = 0;
- for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
- {
- local->ops->conf_tx(local_to_hw(local),
- i + IEEE80211_TX_QUEUE_DATA0,
- &qparam);
- }
- /* IBSS uses different parameters for Beacon sending */
- qparam.cw_min++;
- qparam.cw_min *= 2;
- qparam.cw_min--;
- local->ops->conf_tx(local_to_hw(local),
- IEEE80211_TX_QUEUE_BEACON, &qparam);
- }
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- memcpy(ifsta->ssid, ssid, len);
- memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
- ifsta->ssid_len = len;
-
- if (len)
- ifsta->flags |= IEEE80211_STA_SSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_SSID_SET;
- if (sdata->type == IEEE80211_IF_TYPE_IBSS &&
- !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
- ifsta->ibss_join_req = jiffies;
- ifsta->state = IEEE80211_IBSS_SEARCH;
- return ieee80211_sta_find_ibss(dev, ifsta);
- }
- return 0;
-}
-
-
-int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
- *len = ifsta->ssid_len;
- return 0;
-}
-
-
-int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- int res;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
- memcpy(ifsta->bssid, bssid, ETH_ALEN);
- res = ieee80211_if_config(dev);
- if (res) {
- printk(KERN_DEBUG "%s: Failed to config new BSSID to "
- "the low-level driver\n", dev->name);
- return res;
- }
- }
-
- if (is_valid_ether_addr(bssid))
- ifsta->flags |= IEEE80211_STA_BSSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
-
- return 0;
-}
-
-
-static void ieee80211_send_nullfunc(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- int powersave)
-{
- struct sk_buff *skb;
- struct ieee80211_hdr *nullfunc;
- u16 fc;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
- "frame\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
- memset(nullfunc, 0, 24);
- fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
- IEEE80211_FCTL_TODS;
- if (powersave)
- fc |= IEEE80211_FCTL_PM;
- nullfunc->frame_control = cpu_to_le16(fc);
- memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
- memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
-
- ieee80211_sta_tx(sdata->dev, skb, 0);
-}
-
-
-void ieee80211_scan_completed(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct net_device *dev = local->scan_dev;
- struct ieee80211_sub_if_data *sdata;
- union iwreq_data wrqu;
-
- local->last_scan_completed = jiffies;
- memset(&wrqu, 0, sizeof(wrqu));
- wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
-
- if (local->sta_hw_scanning) {
- local->sta_hw_scanning = 0;
- goto done;
- }
-
- local->sta_sw_scanning = 0;
- if (ieee80211_hw_config(local))
- printk(KERN_DEBUG "%s: failed to restore operational"
- "channel after scan\n", dev->name);
-
-
- netif_tx_lock_bh(local->mdev);
- local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
- local->ops->configure_filter(local_to_hw(local),
- FIF_BCN_PRBRESP_PROMISC,
- &local->filter_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
-
- netif_tx_unlock_bh(local->mdev);
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-
- /* No need to wake the master device. */
- if (sdata->dev == local->mdev)
- continue;
-
- if (sdata->type == IEEE80211_IF_TYPE_STA) {
- if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
- ieee80211_send_nullfunc(local, sdata, 0);
- ieee80211_sta_timer((unsigned long)sdata);
- }
-
- netif_wake_queue(sdata->dev);
- }
- rcu_read_unlock();
-
-done:
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
- (!ifsta->state == IEEE80211_IBSS_JOINED &&
- !ieee80211_sta_active_ibss(dev)))
- ieee80211_sta_find_ibss(dev, ifsta);
- }
-}
-EXPORT_SYMBOL(ieee80211_scan_completed);
-
-void ieee80211_sta_scan_work(void *l)
-{
- struct ieee80211_local *local = l;
- struct net_device *dev = local->scan_dev;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_hw_mode *mode;
- struct ieee80211_channel *chan;
- int skip;
- unsigned long next_delay = 0;
-
- if (!local->sta_sw_scanning)
- return;
-
- switch (local->scan_state) {
- case SCAN_SET_CHANNEL:
- mode = local->scan_hw_mode;
- if (local->scan_hw_mode->list.next == &local->modes_list &&
- local->scan_channel_idx >= mode->num_channels) {
- ieee80211_scan_completed(local_to_hw(local));
- return;
- }
- skip = !(local->enabled_modes & (1 << mode->mode));
- chan = &mode->channels[local->scan_channel_idx];
- if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
- (sdata->type == IEEE80211_IF_TYPE_IBSS &&
- !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
- (local->hw_modes & local->enabled_modes &
- (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
- skip = 1;
-
- if (!skip) {
-#if 0
- printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
- dev->name, chan->chan, chan->freq);
-#endif
-
- local->scan_channel = chan;
- if (ieee80211_hw_config(local)) {
- printk(KERN_DEBUG "%s: failed to set channel "
- "%d (%d MHz) for scan\n", dev->name,
- chan->chan, chan->freq);
- skip = 1;
- }
- }
-
- local->scan_channel_idx++;
- if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
- if (local->scan_hw_mode->list.next != &local->modes_list) {
- local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
- struct ieee80211_hw_mode,
- list);
- local->scan_channel_idx = 0;
- }
- }
-
- if (skip)
- break;
-
- next_delay = IEEE80211_PROBE_DELAY +
- usecs_to_jiffies(local->hw.channel_change_time);
- local->scan_state = SCAN_SEND_PROBE;
- break;
- case SCAN_SEND_PROBE:
- if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
- ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
- local->scan_ssid_len);
- next_delay = IEEE80211_CHANNEL_TIME;
- } else
- next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
- local->scan_state = SCAN_SET_CHANNEL;
- break;
- }
-
- if (local->sta_sw_scanning)
- queue_delayed_work(local->hw.workqueue, &local->scan_work,
- next_delay);
-}
-
-
-static int ieee80211_sta_start_scan(struct net_device *dev,
- u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
-
- if (ssid_len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
-
- /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
- * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
- * BSSID: MACAddress
- * SSID
- * ScanType: ACTIVE, PASSIVE
- * ProbeDelay: delay (in microseconds) to be used prior to transmitting
- * a Probe frame during active scanning
- * ChannelList
- * MinChannelTime (>= ProbeDelay), in TU
- * MaxChannelTime: (>= MinChannelTime), in TU
- */
-
- /* MLME-SCAN.confirm
- * BSSDescriptionSet
- * ResultCode: SUCCESS, INVALID_PARAMETERS
- */
-
- if (local->sta_sw_scanning || local->sta_hw_scanning) {
- if (local->scan_dev == dev)
- return 0;
- return -EBUSY;
- }
-
- if (local->ops->hw_scan) {
- int rc = local->ops->hw_scan(local_to_hw(local),
- ssid, ssid_len);
- if (!rc) {
- local->sta_hw_scanning = 1;
- local->scan_dev = dev;
- }
- return rc;
- }
-
- local->sta_sw_scanning = 1;
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-
- /* Don't stop the master interface, otherwise we can't transmit
- * probes! */
- if (sdata->dev == local->mdev)
- continue;
-
- netif_stop_queue(sdata->dev);
- if (sdata->type == IEEE80211_IF_TYPE_STA &&
- (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
- ieee80211_send_nullfunc(local, sdata, 1);
- }
- rcu_read_unlock();
-
- if (ssid) {
- local->scan_ssid_len = ssid_len;
- memcpy(local->scan_ssid, ssid, ssid_len);
- } else
- local->scan_ssid_len = 0;
- local->scan_state = SCAN_SET_CHANNEL;
- local->scan_hw_mode = list_entry(local->modes_list.next,
- struct ieee80211_hw_mode,
- list);
- local->scan_channel_idx = 0;
- local->scan_dev = dev;
-
- netif_tx_lock_bh(local->mdev);
- local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
- local->ops->configure_filter(local_to_hw(local),
- FIF_BCN_PRBRESP_PROMISC,
- &local->filter_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
- netif_tx_unlock_bh(local->mdev);
-
- /* TODO: start scan as soon as all nullfunc frames are ACKed */
- queue_delayed_work(local->hw.workqueue, &local->scan_work,
- IEEE80211_CHANNEL_TIME);
-
- return 0;
-}
-
-
-int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- return ieee80211_sta_start_scan(dev, ssid, ssid_len);
-
- if (local->sta_sw_scanning || local->sta_hw_scanning) {
- if (local->scan_dev == dev)
- return 0;
- return -EBUSY;
- }
-
- ifsta->scan_ssid_len = ssid_len;
- if (ssid_len)
- memcpy(ifsta->scan_ssid, ssid, ssid_len);
- set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
- return 0;
-}
-
-static char *
-ieee80211_sta_scan_result(struct net_device *dev,
- struct ieee80211_sta_bss *bss,
- char *current_ev, char *end_buf)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_event iwe;
-
- if (time_after(jiffies,
- bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
- return current_ev;
-
- if (!(local->enabled_modes & (1 << bss->hw_mode)))
- return current_ev;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_ADDR_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWESSID;
- iwe.u.data.length = bss->ssid_len;
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->ssid);
-
- if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWMODE;
- if (bss->capability & WLAN_CAPABILITY_ESS)
- iwe.u.mode = IW_MODE_MASTER;
- else
- iwe.u.mode = IW_MODE_ADHOC;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_UINT_LEN);
- }
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = bss->channel;
- iwe.u.freq.e = 0;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
- iwe.u.freq.m = bss->freq * 100000;
- iwe.u.freq.e = 1;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVQUAL;
- iwe.u.qual.qual = bss->signal;
- iwe.u.qual.level = bss->rssi;
- iwe.u.qual.noise = bss->noise;
- iwe.u.qual.updated = local->wstats_flags;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_QUAL_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWENCODE;
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
- iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- else
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- iwe.u.data.length = 0;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
-
- if (bss && bss->wpa_ie) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = bss->wpa_ie_len;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->wpa_ie);
- }
-
- if (bss && bss->rsn_ie) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = bss->rsn_ie_len;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->rsn_ie);
- }
-
- if (bss && bss->supp_rates_len > 0) {
- /* display all supported rates in readable format */
- char *p = current_ev + IW_EV_LCP_LEN;
- int i;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWRATE;
- /* Those two flags are ignored... */
- iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
-
- for (i = 0; i < bss->supp_rates_len; i++) {
- iwe.u.bitrate.value = ((bss->supp_rates[i] &
- 0x7f) * 500000);
- p = iwe_stream_add_value(current_ev, p,
- end_buf, &iwe, IW_EV_PARAM_LEN);
- }
- current_ev = p;
- }
-
- if (bss) {
- char *buf;
- buf = kmalloc(30, GFP_ATOMIC);
- if (buf) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- kfree(buf);
- }
- }
-
- return current_ev;
-}
-
-
-int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- char *current_ev = buf;
- char *end_buf = buf + len;
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
- spin_unlock_bh(&local->sta_bss_lock);
- return -E2BIG;
- }
- current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
- end_buf);
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return current_ev - buf;
-}
-
-
-int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- kfree(ifsta->extra_ie);
- if (len == 0) {
- ifsta->extra_ie = NULL;
- ifsta->extra_ie_len = 0;
- return 0;
- }
- ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
- if (!ifsta->extra_ie) {
- ifsta->extra_ie_len = 0;
- return -ENOMEM;
- }
- memcpy(ifsta->extra_ie, ie, len);
- ifsta->extra_ie_len = len;
- return 0;
-}
-
-
-struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
- struct sk_buff *skb, u8 *bssid,
- u8 *addr)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- DECLARE_MAC_BUF(mac);
-
- /* TODO: Could consider removing the least recently used entry and
- * allow new one to be added. */
- if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: No room for a new IBSS STA "
- "entry %s\n", dev->name, print_mac(mac, addr));
- }
- return NULL;
- }
-
- printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
-
- sta = sta_info_add(local, dev, addr, GFP_ATOMIC);
- if (!sta)
- return NULL;
-
- sta->supp_rates = sdata->u.sta.supp_rates_bits;
-
- rate_control_rate_init(sta, local);
-
- return sta; /* caller will call sta_info_put() */
-}
-
-
-int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-
- printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
- dev->name, reason);
-
- if (sdata->type != IEEE80211_IF_TYPE_STA &&
- sdata->type != IEEE80211_IF_TYPE_IBSS)
- return -EINVAL;
-
- ieee80211_send_deauth(dev, ifsta, reason);
- ieee80211_set_disassoc(dev, ifsta, 1);
- return 0;
-}
-
-
-int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-
- printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
- dev->name, reason);
-
- if (sdata->type != IEEE80211_IF_TYPE_STA)
- return -EINVAL;
-
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
- return -1;
-
- ieee80211_send_disassoc(dev, ifsta, reason);
- ieee80211_set_disassoc(dev, ifsta, 0);
- return 0;
-}
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
new file mode 100644
index 0000000..fd9b5e6
--- /dev/null
+++ b/net/mac80211/iface.c
@@ -0,0 +1,325 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "debugfs_netdev.h"
+#include "mesh.h"
+
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+ int i;
+
+ /* Default values for sub-interface parameters */
+ sdata->drop_unencrypted = 0;
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+ skb_queue_head_init(&sdata->fragments[i].skb_list);
+
+ INIT_LIST_HEAD(&sdata->key_list);
+}
+
+static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
+{
+ int i;
+
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+ __skb_queue_purge(&sdata->fragments[i].skb_list);
+ }
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_add(struct net_device *dev, const char *name,
+ struct net_device **new_dev, int type,
+ struct vif_params *params)
+{
+ struct net_device *ndev;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = NULL;
+ int ret;
+
+ ASSERT_RTNL();
+ ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
+ name, ieee80211_if_setup);
+ if (!ndev)
+ return -ENOMEM;
+
+#if 0 /* Not in RHEL5 */
+ ndev->needed_headroom = local->tx_headroom +
+ 4*6 /* four MAC addresses */
+ + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
+ + 6 /* mesh */
+ + 8 /* rfc1042/bridge tunnel */
+ - ETH_HLEN /* ethernet hard_header_len */
+ + IEEE80211_ENCRYPT_HEADROOM;
+ ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
+#endif
+
+ ret = dev_alloc_name(ndev, ndev->name);
+ if (ret < 0)
+ goto fail;
+
+ memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+ ndev->base_addr = dev->base_addr;
+ ndev->irq = dev->irq;
+ ndev->mem_start = dev->mem_start;
+ ndev->mem_end = dev->mem_end;
+ SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+ ndev->ieee80211_ptr = &sdata->wdev;
+ sdata->wdev.wiphy = local->hw.wiphy;
+ sdata->vif.type = IEEE80211_IF_TYPE_AP;
+ sdata->dev = ndev;
+ sdata->local = local;
+ ieee80211_if_sdata_init(sdata);
+
+ ret = register_netdevice(ndev);
+ if (ret)
+ goto fail;
+
+ ieee80211_debugfs_add_netdev(sdata);
+ ieee80211_if_set_type(ndev, type);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) &&
+ params && params->mesh_id_len)
+ ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
+ params->mesh_id_len,
+ params->mesh_id);
+
+ /* we're under RTNL so all this is fine */
+ if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
+ __ieee80211_if_del(local, sdata);
+ return -ENODEV;
+ }
+ list_add_tail_rcu(&sdata->list, &local->interfaces);
+
+ if (new_dev)
+ *new_dev = ndev;
+
+ return 0;
+
+fail:
+ free_netdev(ndev);
+ return ret;
+}
+
+void ieee80211_if_set_type(struct net_device *dev, int type)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int oldtype = sdata->vif.type;
+
+ /*
+ * We need to call this function on the master interface
+ * which already has a hard_start_xmit routine assigned
+ * which must not be changed.
+ */
+ if (dev != sdata->local->mdev)
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+
+ /*
+ * Called even when register_netdevice fails, it would
+ * oops if assigned before initialising the rest.
+ */
+ dev->uninit = ieee80211_if_reinit;
+
+ /* most have no BSS pointer */
+ sdata->bss = NULL;
+ sdata->vif.type = type;
+
+ sdata->basic_rates = 0;
+
+ switch (type) {
+ case IEEE80211_IF_TYPE_WDS:
+ /* nothing special */
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ sdata->u.vlan.ap = NULL;
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ sdata->u.ap.force_unicast_rateidx = -1;
+ sdata->u.ap.max_ratectrl_rateidx = -1;
+ skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+ sdata->bss = &sdata->u.ap;
+ INIT_LIST_HEAD(&sdata->u.ap.vlans);
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS: {
+ struct ieee80211_sub_if_data *msdata;
+ struct ieee80211_if_sta *ifsta;
+
+ ifsta = &sdata->u.sta;
+ INIT_WORK(&ifsta->work, ieee80211_sta_work, sdata);
+ setup_timer(&ifsta->timer, ieee80211_sta_timer,
+ (unsigned long) sdata);
+ skb_queue_head_init(&ifsta->skb_queue);
+
+ ifsta->capab = WLAN_CAPABILITY_ESS;
+ ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+ IEEE80211_AUTH_ALG_SHARED_KEY;
+ ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
+ IEEE80211_STA_WMM_ENABLED |
+ IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+
+ msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
+ sdata->bss = &msdata->u.ap;
+
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_mesh_init_sdata(sdata);
+ break;
+ }
+ case IEEE80211_IF_TYPE_MNTR:
+ dev->type = ARPHRD_IEEE80211_RADIOTAP;
+ dev->hard_start_xmit = ieee80211_monitor_start_xmit;
+ sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
+ MONITOR_FLAG_OTHER_BSS;
+ break;
+ default:
+ printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
+ dev->name, __func__, type);
+ }
+ ieee80211_debugfs_change_if_type(sdata, oldtype);
+}
+
+/* Must be called with rtnl lock held. */
+void ieee80211_if_reinit(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb;
+ int flushed;
+
+ ASSERT_RTNL();
+
+ ieee80211_free_keys(sdata);
+
+ ieee80211_if_sdata_deinit(sdata);
+
+ /* Need to handle mesh specially to allow eliding the function call */
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rmc_free(dev);
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_INVALID:
+ /* cannot happen */
+ WARN_ON(1);
+ break;
+ case IEEE80211_IF_TYPE_AP: {
+ /* Remove all virtual interfaces that use this BSS
+ * as their sdata->bss */
+ struct ieee80211_sub_if_data *tsdata, *n;
+ struct beacon_data *beacon;
+
+ list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
+ if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
+ printk(KERN_DEBUG "%s: removing virtual "
+ "interface %s because its BSS interface"
+ " is being removed\n",
+ sdata->dev->name, tsdata->dev->name);
+ list_del_rcu(&tsdata->list);
+ /*
+ * We have lots of time and can afford
+ * to sync for each interface
+ */
+ synchronize_rcu();
+ __ieee80211_if_del(local, tsdata);
+ }
+ }
+
+ beacon = sdata->u.ap.beacon;
+ rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ synchronize_rcu();
+ kfree(beacon);
+
+ while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
+ local->total_ps_buffered--;
+ dev_kfree_skb(skb);
+ }
+
+ break;
+ }
+ case IEEE80211_IF_TYPE_WDS:
+ /* nothing to do */
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ kfree(sdata->u.sta.extra_ie);
+ sdata->u.sta.extra_ie = NULL;
+ kfree(sdata->u.sta.assocreq_ies);
+ sdata->u.sta.assocreq_ies = NULL;
+ kfree(sdata->u.sta.assocresp_ies);
+ sdata->u.sta.assocresp_ies = NULL;
+ if (sdata->u.sta.probe_resp) {
+ dev_kfree_skb(sdata->u.sta.probe_resp);
+ sdata->u.sta.probe_resp = NULL;
+ }
+
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ dev->type = ARPHRD_ETHER;
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ sdata->u.vlan.ap = NULL;
+ break;
+ }
+
+ flushed = sta_info_flush(local, sdata);
+ WARN_ON(flushed);
+
+ memset(&sdata->u, 0, sizeof(sdata->u));
+ ieee80211_if_sdata_init(sdata);
+}
+
+/* Must be called with rtnl lock held. */
+void __ieee80211_if_del(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct net_device *dev = sdata->dev;
+
+ ieee80211_debugfs_remove_netdev(sdata);
+ unregister_netdevice(dev);
+ /* Except master interface, the net_device will be freed by
+ * net_device->destructor (i. e. ieee80211_if_free). */
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata, *n;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
+ if ((sdata->vif.type == id || id == -1) &&
+ strcmp(name, sdata->dev->name) == 0 &&
+ sdata->dev != local->mdev) {
+ list_del_rcu(&sdata->list);
+ synchronize_rcu();
+ __ieee80211_if_del(local, sdata);
+ return 0;
+ }
+ }
+ return -ENODEV;
+}
+
+void ieee80211_if_free(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ ieee80211_if_sdata_deinit(sdata);
+ free_netdev(dev);
+}
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 0b2328f..7d12363 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -2,7 +2,7 @@
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
- * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -13,14 +13,15 @@
#include <linux/etherdevice.h>
#include <linux/list.h>
#include <linux/rcupdate.h>
+#include <linux/rtnetlink.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "debugfs_key.h"
#include "aes_ccm.h"
-/*
- * Key handling basics
+/**
+ * DOC: Key handling basics
*
* Key handling in mac80211 is done based on per-interface (sub_if_data)
* keys and per-station keys. Since each station belongs to an interface,
@@ -32,13 +33,81 @@
* There is currently no way of knowing this except by looking into
* debugfs.
*
- * All operations here are called under RTNL so no extra locking is
- * required.
+ * All key operations are protected internally so you can call them at
+ * any time.
+ *
+ * Within mac80211, key references are, just as STA structure references,
+ * protected by RCU. Note, however, that some things are unprotected,
+ * namely the key->sta dereferences within the hardware acceleration
+ * functions. This means that sta_info_destroy() must flush the key todo
+ * list.
+ *
+ * All the direct key list manipulation functions must not sleep because
+ * they can operate on STA info structs that are protected by RCU.
*/
static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
static const u8 zero_addr[ETH_ALEN];
+/* key mutex: used to synchronise todo runners */
+static DEFINE_MUTEX(key_mutex);
+static DEFINE_SPINLOCK(todo_lock);
+static LIST_HEAD(todo_list);
+
+static void key_todo(void *d)
+{
+ ieee80211_key_todo();
+}
+
+static DECLARE_WORK(todo_work, key_todo, NULL);
+
+/**
+ * add_todo - add todo item for a key
+ *
+ * @key: key to add to do item for
+ * @flag: todo flag(s)
+ */
+static void add_todo(struct ieee80211_key *key, u32 flag)
+{
+ if (!key)
+ return;
+
+ spin_lock(&todo_lock);
+ key->flags |= flag;
+ /*
+ * Remove again if already on the list so that we move it to the end.
+ */
+ if (!list_empty(&key->todo))
+ list_del(&key->todo);
+ list_add_tail(&key->todo, &todo_list);
+ schedule_work(&todo_work);
+ spin_unlock(&todo_lock);
+}
+
+/**
+ * ieee80211_key_lock - lock the mac80211 key operation lock
+ *
+ * This locks the (global) mac80211 key operation lock, all
+ * key operations must be done under this lock.
+ */
+static void ieee80211_key_lock(void)
+{
+ mutex_lock(&key_mutex);
+}
+
+/**
+ * ieee80211_key_unlock - unlock the mac80211 key operation lock
+ */
+static void ieee80211_key_unlock(void)
+{
+ mutex_unlock(&key_mutex);
+}
+
+static void assert_key_lock(void)
+{
+ WARN_ON(!mutex_is_locked(&key_mutex));
+}
+
static const u8 *get_mac_for_key(struct ieee80211_key *key)
{
const u8 *addr = bcast_addr;
@@ -49,8 +118,8 @@ static const u8 *get_mac_for_key(struct ieee80211_key *key)
* address to indicate a transmit-only key.
*/
if (key->conf.alg != ALG_WEP &&
- (key->sdata->type == IEEE80211_IF_TYPE_AP ||
- key->sdata->type == IEEE80211_IF_TYPE_VLAN))
+ (key->sdata->vif.type == IEEE80211_IF_TYPE_AP ||
+ key->sdata->vif.type == IEEE80211_IF_TYPE_VLAN))
addr = zero_addr;
if (key->sta)
@@ -65,6 +134,9 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
int ret;
DECLARE_MAC_BUF(mac);
+ assert_key_lock();
+ might_sleep();
+
if (!key->local->ops->set_key)
return;
@@ -74,8 +146,11 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
key->sdata->dev->dev_addr, addr,
&key->conf);
- if (!ret)
+ if (!ret) {
+ spin_lock(&todo_lock);
key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
+ spin_unlock(&todo_lock);
+ }
if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP)
printk(KERN_ERR "mac80211-%s: failed to set key "
@@ -90,11 +165,18 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
int ret;
DECLARE_MAC_BUF(mac);
- if (!key->local->ops->set_key)
+ assert_key_lock();
+ might_sleep();
+
+ if (!key || !key->local->ops->set_key)
return;
- if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
+ spin_lock(&todo_lock);
+ if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
+ spin_unlock(&todo_lock);
return;
+ }
+ spin_unlock(&todo_lock);
addr = get_mac_for_key(key);
@@ -108,12 +190,75 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
wiphy_name(key->local->hw.wiphy),
key->conf.keyidx, print_mac(mac, addr), ret);
+ spin_lock(&todo_lock);
key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
+ spin_unlock(&todo_lock);
+}
+
+static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata,
+ int idx)
+{
+ struct ieee80211_key *key = NULL;
+
+ if (idx >= 0 && idx < NUM_DEFAULT_KEYS)
+ key = sdata->keys[idx];
+
+ rcu_assign_pointer(sdata->default_key, key);
+
+ if (key)
+ add_todo(key, KEY_FLAG_TODO_DEFKEY);
+}
+
+void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&sdata->local->key_lock, flags);
+ __ieee80211_set_default_key(sdata, idx);
+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+}
+
+
+static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
+ struct ieee80211_key *old,
+ struct ieee80211_key *new)
+{
+ int idx, defkey;
+
+ if (new)
+ list_add(&new->list, &sdata->key_list);
+
+ if (sta) {
+ rcu_assign_pointer(sta->key, new);
+ } else {
+ WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx);
+
+ if (old)
+ idx = old->conf.keyidx;
+ else
+ idx = new->conf.keyidx;
+
+ defkey = old && sdata->default_key == old;
+
+ if (defkey && !new)
+ __ieee80211_set_default_key(sdata, -1);
+
+ rcu_assign_pointer(sdata->keys[idx], new);
+ if (defkey && new)
+ __ieee80211_set_default_key(sdata, new->conf.keyidx);
+ }
+
+ if (old) {
+ /*
+ * We'll use an empty list to indicate that the key
+ * has already been removed.
+ */
+ list_del_init(&old->list);
+ }
}
-struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
- struct sta_info *sta,
- enum ieee80211_key_alg alg,
+struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
int idx,
size_t key_len,
const u8 *key_data)
@@ -137,10 +282,8 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
key->conf.keyidx = idx;
key->conf.keylen = key_len;
memcpy(key->conf.key, key_data, key_len);
-
- key->local = sdata->local;
- key->sdata = sdata;
- key->sta = sta;
+ INIT_LIST_HEAD(&key->list);
+ INIT_LIST_HEAD(&key->todo);
if (alg == ALG_CCMP) {
/*
@@ -149,22 +292,31 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
*/
key->u.ccmp.tfm = ieee80211_aes_key_setup_encrypt(key_data);
if (!key->u.ccmp.tfm) {
- ieee80211_key_free(key);
+ kfree(key);
return NULL;
}
}
- ieee80211_debugfs_key_add(key->local, key);
+ return key;
+}
- /* remove key first */
- if (sta)
- ieee80211_key_free(sta->key);
- else
- ieee80211_key_free(sdata->keys[idx]);
+void ieee80211_key_link(struct ieee80211_key *key,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta)
+{
+ struct ieee80211_key *old_key;
+ unsigned long flags;
+ int idx;
- if (sta) {
- ieee80211_debugfs_key_sta_link(key, sta);
+ BUG_ON(!sdata);
+ BUG_ON(!key);
+ idx = key->conf.keyidx;
+ key->local = sdata->local;
+ key->sdata = sdata;
+ key->sta = sta;
+
+ if (sta) {
/*
* some hardware cannot handle TKIP with QoS, so
* we indicate whether QoS could be in use.
@@ -172,108 +324,207 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
if (sta->flags & WLAN_STA_WME)
key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA;
} else {
- if (sdata->type == IEEE80211_IF_TYPE_STA) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
struct sta_info *ap;
+ /*
+ * We're getting a sta pointer in,
+ * so must be under RCU read lock.
+ */
+
/* same here, the AP could be using QoS */
ap = sta_info_get(key->local, key->sdata->u.sta.bssid);
if (ap) {
if (ap->flags & WLAN_STA_WME)
key->conf.flags |=
IEEE80211_KEY_FLAG_WMM_STA;
- sta_info_put(ap);
}
}
}
- /* enable hwaccel if appropriate */
- if (netif_running(key->sdata->dev))
- ieee80211_key_enable_hw_accel(key);
+ spin_lock_irqsave(&sdata->local->key_lock, flags);
if (sta)
- rcu_assign_pointer(sta->key, key);
+ old_key = sta->key;
else
- rcu_assign_pointer(sdata->keys[idx], key);
+ old_key = sdata->keys[idx];
- list_add(&key->list, &sdata->key_list);
+ __ieee80211_key_replace(sdata, sta, old_key, key);
- return key;
+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+
+ /* free old key later */
+ add_todo(old_key, KEY_FLAG_TODO_DELETE);
+
+ add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS);
+ if (netif_running(sdata->dev))
+ add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD);
+}
+
+static void __ieee80211_key_free(struct ieee80211_key *key)
+{
+ /*
+ * Replace key with nothingness if it was ever used.
+ */
+ if (key->sdata)
+ __ieee80211_key_replace(key->sdata, key->sta,
+ key, NULL);
+
+ add_todo(key, KEY_FLAG_TODO_DELETE);
}
void ieee80211_key_free(struct ieee80211_key *key)
{
+ unsigned long flags;
+
if (!key)
return;
- if (key->sta) {
- rcu_assign_pointer(key->sta->key, NULL);
- } else {
- if (key->sdata->default_key == key)
- ieee80211_set_default_key(key->sdata, -1);
- if (key->conf.keyidx >= 0 &&
- key->conf.keyidx < NUM_DEFAULT_KEYS)
- rcu_assign_pointer(key->sdata->keys[key->conf.keyidx],
- NULL);
- else
- WARN_ON(1);
+ if (!key->sdata) {
+ /* The key has not been linked yet, simply free it
+ * and don't Oops */
+ if (key->conf.alg == ALG_CCMP)
+ ieee80211_aes_key_free(key->u.ccmp.tfm);
+ kfree(key);
+ return;
}
- /* wait for all key users to complete */
- synchronize_rcu();
+ spin_lock_irqsave(&key->sdata->local->key_lock, flags);
+ __ieee80211_key_free(key);
+ spin_unlock_irqrestore(&key->sdata->local->key_lock, flags);
+}
+
+/*
+ * To be safe against concurrent manipulations of the list (which shouldn't
+ * actually happen) we need to hold the spinlock. But under the spinlock we
+ * can't actually do much, so we defer processing to the todo list. Then run
+ * the todo list to be sure the operation and possibly previously pending
+ * operations are completed.
+ */
+static void ieee80211_todo_for_each_key(struct ieee80211_sub_if_data *sdata,
+ u32 todo_flags)
+{
+ struct ieee80211_key *key;
+ unsigned long flags;
+
+ might_sleep();
+
+ spin_lock_irqsave(&sdata->local->key_lock, flags);
+ list_for_each_entry(key, &sdata->key_list, list)
+ add_todo(key, todo_flags);
+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+
+ ieee80211_key_todo();
+}
+
+void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata)
+{
+ ASSERT_RTNL();
+
+ WARN_ON(!netif_running(sdata->dev));
+ if (!netif_running(sdata->dev))
+ return;
+
+ ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_ADD);
+}
+
+void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata)
+{
+ ASSERT_RTNL();
+
+ ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_REMOVE);
+}
+
+static void __ieee80211_key_destroy(struct ieee80211_key *key)
+{
+ if (!key)
+ return;
- /* remove from hwaccel if appropriate */
ieee80211_key_disable_hw_accel(key);
if (key->conf.alg == ALG_CCMP)
ieee80211_aes_key_free(key->u.ccmp.tfm);
ieee80211_debugfs_key_remove(key);
- list_del(&key->list);
-
kfree(key);
}
-void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx)
+static void __ieee80211_key_todo(void)
{
- struct ieee80211_key *key = NULL;
+ struct ieee80211_key *key;
+ bool work_done;
+ u32 todoflags;
- if (idx >= 0 && idx < NUM_DEFAULT_KEYS)
- key = sdata->keys[idx];
+ /*
+ * NB: sta_info_destroy relies on this!
+ */
+ synchronize_rcu();
- if (sdata->default_key != key) {
- ieee80211_debugfs_key_remove_default(sdata);
+ spin_lock(&todo_lock);
+ while (!list_empty(&todo_list)) {
+ key = list_first_entry(&todo_list, struct ieee80211_key, todo);
+ list_del_init(&key->todo);
+ todoflags = key->flags & (KEY_FLAG_TODO_ADD_DEBUGFS |
+ KEY_FLAG_TODO_DEFKEY |
+ KEY_FLAG_TODO_HWACCEL_ADD |
+ KEY_FLAG_TODO_HWACCEL_REMOVE |
+ KEY_FLAG_TODO_DELETE);
+ key->flags &= ~todoflags;
+ spin_unlock(&todo_lock);
+
+ work_done = false;
+
+ if (todoflags & KEY_FLAG_TODO_ADD_DEBUGFS) {
+ ieee80211_debugfs_key_add(key);
+ work_done = true;
+ }
+ if (todoflags & KEY_FLAG_TODO_DEFKEY) {
+ ieee80211_debugfs_key_remove_default(key->sdata);
+ ieee80211_debugfs_key_add_default(key->sdata);
+ work_done = true;
+ }
+ if (todoflags & KEY_FLAG_TODO_HWACCEL_ADD) {
+ ieee80211_key_enable_hw_accel(key);
+ work_done = true;
+ }
+ if (todoflags & KEY_FLAG_TODO_HWACCEL_REMOVE) {
+ ieee80211_key_disable_hw_accel(key);
+ work_done = true;
+ }
+ if (todoflags & KEY_FLAG_TODO_DELETE) {
+ __ieee80211_key_destroy(key);
+ work_done = true;
+ }
- rcu_assign_pointer(sdata->default_key, key);
+ WARN_ON(!work_done);
- if (sdata->default_key)
- ieee80211_debugfs_key_add_default(sdata);
+ spin_lock(&todo_lock);
}
+ spin_unlock(&todo_lock);
}
-void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata)
+void ieee80211_key_todo(void)
{
- struct ieee80211_key *key, *tmp;
-
- list_for_each_entry_safe(key, tmp, &sdata->key_list, list)
- ieee80211_key_free(key);
+ ieee80211_key_lock();
+ __ieee80211_key_todo();
+ ieee80211_key_unlock();
}
-void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata)
+void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_key *key;
+ struct ieee80211_key *key, *tmp;
+ unsigned long flags;
- WARN_ON(!netif_running(sdata->dev));
- if (!netif_running(sdata->dev))
- return;
+ ieee80211_key_lock();
- list_for_each_entry(key, &sdata->key_list, list)
- ieee80211_key_enable_hw_accel(key);
-}
+ ieee80211_debugfs_key_remove_default(sdata);
-void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_key *key;
+ spin_lock_irqsave(&sdata->local->key_lock, flags);
+ list_for_each_entry_safe(key, tmp, &sdata->key_list, list)
+ __ieee80211_key_free(key);
+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
- list_for_each_entry(key, &sdata->key_list, list)
- ieee80211_key_disable_hw_accel(key);
+ __ieee80211_key_todo();
+
+ ieee80211_key_unlock();
}
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
new file mode 100644
index 0000000..e42d9f3
--- /dev/null
+++ b/net/mac80211/key.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_KEY_H
+#define IEEE80211_KEY_H
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/crypto.h>
+#include <linux/rcupdate.h>
+#include <net/mac80211.h>
+
+/* ALG_TKIP
+ * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
+ * Temporal Encryption Key (128 bits)
+ * Temporal Authenticator Tx MIC Key (64 bits)
+ * Temporal Authenticator Rx MIC Key (64 bits)
+ */
+
+#define WEP_IV_LEN 4
+#define WEP_ICV_LEN 4
+
+#define ALG_TKIP_KEY_LEN 32
+/* Starting offsets for each key */
+#define ALG_TKIP_TEMP_ENCR_KEY 0
+#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
+#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
+#define TKIP_IV_LEN 8
+#define TKIP_ICV_LEN 4
+
+#define ALG_CCMP_KEY_LEN 16
+#define CCMP_HDR_LEN 8
+#define CCMP_MIC_LEN 8
+#define CCMP_TK_LEN 16
+#define CCMP_PN_LEN 6
+
+#define NUM_RX_DATA_QUEUES 17
+
+struct ieee80211_local;
+struct ieee80211_sub_if_data;
+struct sta_info;
+
+/**
+ * enum ieee80211_internal_key_flags - internal key flags
+ *
+ * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
+ * in the hardware for TX crypto hardware acceleration.
+ * @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an
+ * RCU grace period, no longer be reachable other than from the
+ * todo list.
+ * @KEY_FLAG_TODO_HWACCEL_ADD: Key needs to be added to hardware acceleration.
+ * @KEY_FLAG_TODO_HWACCEL_REMOVE: Key needs to be removed from hardware
+ * acceleration.
+ * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated.
+ * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs.
+ */
+enum ieee80211_internal_key_flags {
+ KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
+ KEY_FLAG_TODO_DELETE = BIT(1),
+ KEY_FLAG_TODO_HWACCEL_ADD = BIT(2),
+ KEY_FLAG_TODO_HWACCEL_REMOVE = BIT(3),
+ KEY_FLAG_TODO_DEFKEY = BIT(4),
+ KEY_FLAG_TODO_ADD_DEBUGFS = BIT(5),
+};
+
+struct ieee80211_key {
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
+
+ /* for sdata list */
+ struct list_head list;
+ /* for todo list */
+ struct list_head todo;
+
+ /* protected by todo lock! */
+ unsigned int flags;
+
+ union {
+ struct {
+ /* last used TSC */
+ u32 iv32;
+ u16 iv16;
+ u16 p1k[5];
+ int tx_initialized;
+
+ /* last received RSC */
+ u32 iv32_rx[NUM_RX_DATA_QUEUES];
+ u16 iv16_rx[NUM_RX_DATA_QUEUES];
+ u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
+ int rx_initialized[NUM_RX_DATA_QUEUES];
+ } tkip;
+ struct {
+ u8 tx_pn[6];
+ u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+ struct crypto_tfm *tfm;
+ u32 replays; /* dot11RSNAStatsCCMPReplays */
+ /* scratch buffers for virt_to_page() (crypto API) */
+#ifndef AES_BLOCK_LEN
+#define AES_BLOCK_LEN 16
+#endif
+ u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
+ u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
+ } ccmp;
+ } u;
+
+ /* number of times this key has been used */
+ int tx_rx_count;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct {
+ struct dentry *stalink;
+ struct dentry *dir;
+ struct dentry *keylen;
+ struct dentry *flags;
+ struct dentry *keyidx;
+ struct dentry *hw_key_idx;
+ struct dentry *tx_rx_count;
+ struct dentry *algorithm;
+ struct dentry *tx_spec;
+ struct dentry *rx_spec;
+ struct dentry *replays;
+ struct dentry *key;
+ struct dentry *ifindex;
+ int cnt;
+ } debugfs;
+#endif
+
+ /*
+ * key config, must be last because it contains key
+ * material as variable length member
+ */
+ struct ieee80211_key_conf conf;
+};
+
+struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
+ int idx,
+ size_t key_len,
+ const u8 *key_data);
+/*
+ * Insert a key into data structures (sdata, sta if necessary)
+ * to make it used, free old key.
+ */
+void ieee80211_key_link(struct ieee80211_key *key,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta);
+void ieee80211_key_free(struct ieee80211_key *key);
+void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
+void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
+void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
+void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
+
+void ieee80211_key_todo(void);
+
+#endif /* IEEE80211_KEY_H */
diff --git a/net/mac80211/led.c b/net/mac80211/led.c
new file mode 100644
index 0000000..162a643
--- /dev/null
+++ b/net/mac80211/led.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* just for IFNAMSIZ */
+#include <linux/if.h>
+#include "led.h"
+
+void ieee80211_led_rx(struct ieee80211_local *local)
+{
+ if (unlikely(!local->rx_led))
+ return;
+ if (local->rx_led_counter++ % 2 == 0)
+ led_trigger_event(local->rx_led, LED_OFF);
+ else
+ led_trigger_event(local->rx_led, LED_FULL);
+}
+
+/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
+void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+ if (unlikely(!local->tx_led))
+ return;
+ /* not sure how this is supposed to work ... */
+ local->tx_led_counter += 2*q-1;
+ if (local->tx_led_counter % 2 == 0)
+ led_trigger_event(local->tx_led, LED_OFF);
+ else
+ led_trigger_event(local->tx_led, LED_FULL);
+}
+
+void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
+{
+ if (unlikely(!local->assoc_led))
+ return;
+ if (associated)
+ led_trigger_event(local->assoc_led, LED_FULL);
+ else
+ led_trigger_event(local->assoc_led, LED_OFF);
+}
+
+void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
+{
+ if (unlikely(!local->radio_led))
+ return;
+ if (enabled)
+ led_trigger_event(local->radio_led, LED_FULL);
+ else
+ led_trigger_event(local->radio_led, LED_OFF);
+}
+
+void ieee80211_led_init(struct ieee80211_local *local)
+{
+ local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->rx_led) {
+ snprintf(local->rx_led_name, sizeof(local->rx_led_name),
+ "%srx", wiphy_name(local->hw.wiphy));
+ local->rx_led->name = local->rx_led_name;
+ if (led_trigger_register(local->rx_led)) {
+ kfree(local->rx_led);
+ local->rx_led = NULL;
+ }
+ }
+
+ local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->tx_led) {
+ snprintf(local->tx_led_name, sizeof(local->tx_led_name),
+ "%stx", wiphy_name(local->hw.wiphy));
+ local->tx_led->name = local->tx_led_name;
+ if (led_trigger_register(local->tx_led)) {
+ kfree(local->tx_led);
+ local->tx_led = NULL;
+ }
+ }
+
+ local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->assoc_led) {
+ snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
+ "%sassoc", wiphy_name(local->hw.wiphy));
+ local->assoc_led->name = local->assoc_led_name;
+ if (led_trigger_register(local->assoc_led)) {
+ kfree(local->assoc_led);
+ local->assoc_led = NULL;
+ }
+ }
+
+ local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->radio_led) {
+ snprintf(local->radio_led_name, sizeof(local->radio_led_name),
+ "%sradio", wiphy_name(local->hw.wiphy));
+ local->radio_led->name = local->radio_led_name;
+ if (led_trigger_register(local->radio_led)) {
+ kfree(local->radio_led);
+ local->radio_led = NULL;
+ }
+ }
+}
+
+void ieee80211_led_exit(struct ieee80211_local *local)
+{
+ if (local->radio_led) {
+ led_trigger_unregister(local->radio_led);
+ kfree(local->radio_led);
+ }
+ if (local->assoc_led) {
+ led_trigger_unregister(local->assoc_led);
+ kfree(local->assoc_led);
+ }
+ if (local->tx_led) {
+ led_trigger_unregister(local->tx_led);
+ kfree(local->tx_led);
+ }
+ if (local->rx_led) {
+ led_trigger_unregister(local->rx_led);
+ kfree(local->rx_led);
+ }
+}
+
+char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->radio_led)
+ return local->radio_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
+
+char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->assoc_led)
+ return local->assoc_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
+
+char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->tx_led)
+ return local->tx_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
+
+char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->rx_led)
+ return local->rx_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
diff --git a/net/mac80211/led.h b/net/mac80211/led.h
new file mode 100644
index 0000000..77b1e1b
--- /dev/null
+++ b/net/mac80211/led.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/leds.h>
+#include "ieee80211_i.h"
+
+#ifdef CONFIG_MAC80211_LEDS
+extern void ieee80211_led_rx(struct ieee80211_local *local);
+extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
+extern void ieee80211_led_assoc(struct ieee80211_local *local,
+ bool associated);
+extern void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled);
+extern void ieee80211_led_init(struct ieee80211_local *local);
+extern void ieee80211_led_exit(struct ieee80211_local *local);
+#else
+static inline void ieee80211_led_rx(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+}
+static inline void ieee80211_led_assoc(struct ieee80211_local *local,
+ bool associated)
+{
+}
+static inline void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled)
+{
+}
+static inline void ieee80211_led_init(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_exit(struct ieee80211_local *local)
+{
+}
+#endif
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
new file mode 100644
index 0000000..d075c95
--- /dev/null
+++ b/net/mac80211/main.c
@@ -0,0 +1,1914 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/rtnetlink.h>
+#include <linux/bitmap.h>
+#if 0 /* Not in RHEL5 */
+#include <net/net_namespace.h>
+#endif
+#include <net/cfg80211.h>
+
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "mesh.h"
+#include "wep.h"
+#include "wme.h"
+#include "aes_ccm.h"
+#include "led.h"
+#include "cfg.h"
+#include "debugfs.h"
+#include "debugfs_netdev.h"
+
+#define SUPP_MCS_SET_LEN 16
+
+/*
+ * For seeing transmitted packets on monitor interfaces
+ * we have a radiotap header too.
+ */
+struct ieee80211_tx_status_rtap_hdr {
+ struct ieee80211_radiotap_header hdr;
+ __le16 tx_flags;
+ u8 data_retries;
+} __attribute__ ((packed));
+
+/* common interface routines */
+
+static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr)
+{
+ memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+ return ETH_ALEN;
+}
+
+/* must be called under mdev tx lock */
+static void ieee80211_configure_filter(struct ieee80211_local *local)
+{
+ unsigned int changed_flags;
+ unsigned int new_flags = 0;
+
+ if (atomic_read(&local->iff_promiscs))
+ new_flags |= FIF_PROMISC_IN_BSS;
+
+ if (atomic_read(&local->iff_allmultis))
+ new_flags |= FIF_ALLMULTI;
+
+ if (local->monitors)
+ new_flags |= FIF_BCN_PRBRESP_PROMISC;
+
+ if (local->fif_fcsfail)
+ new_flags |= FIF_FCSFAIL;
+
+ if (local->fif_plcpfail)
+ new_flags |= FIF_PLCPFAIL;
+
+ if (local->fif_control)
+ new_flags |= FIF_CONTROL;
+
+ if (local->fif_other_bss)
+ new_flags |= FIF_OTHER_BSS;
+
+ changed_flags = local->filter_flags ^ new_flags;
+
+ /* be a bit nasty */
+ new_flags |= (1<<31);
+
+ local->ops->configure_filter(local_to_hw(local),
+ changed_flags, &new_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+
+ WARN_ON(new_flags & (1<<31));
+
+ local->filter_flags = new_flags & ~(1<<31);
+}
+
+/* master interface */
+
+static int ieee80211_master_open(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+ int res = -EOPNOTSUPP;
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->dev != dev && netif_running(sdata->dev)) {
+ res = 0;
+ break;
+ }
+ }
+ return res;
+}
+
+static int ieee80211_master_stop(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(sdata, &local->interfaces, list)
+ if (sdata->dev != dev && netif_running(sdata->dev))
+ dev_close(sdata->dev);
+
+ return 0;
+}
+
+static void ieee80211_master_set_multicast_list(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ ieee80211_configure_filter(local);
+}
+
+/* regular interfaces */
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+ int meshhdrlen;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0;
+
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.3 frames. */
+ if (new_mtu < 256 ||
+ new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+ return (type1 == IEEE80211_IF_TYPE_MNTR ||
+ type2 == IEEE80211_IF_TYPE_MNTR ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_WDS) ||
+ (type1 == IEEE80211_IF_TYPE_WDS &&
+ (type2 == IEEE80211_IF_TYPE_WDS ||
+ type2 == IEEE80211_IF_TYPE_AP)) ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_VLAN) ||
+ (type1 == IEEE80211_IF_TYPE_VLAN &&
+ (type2 == IEEE80211_IF_TYPE_AP ||
+ type2 == IEEE80211_IF_TYPE_VLAN)));
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata, *nsdata;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_init_conf conf;
+ int res;
+ bool need_hw_reconfig = 0;
+ struct sta_info *sta;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(nsdata, &local->interfaces, list) {
+ struct net_device *ndev = nsdata->dev;
+
+ if (ndev != dev && ndev != local->mdev && netif_running(ndev)) {
+ /*
+ * Allow only a single IBSS interface to be up at any
+ * time. This is restricted because beacon distribution
+ * cannot work properly if both are in the same IBSS.
+ *
+ * To remove this restriction we'd have to disallow them
+ * from setting the same SSID on different IBSS interfaces
+ * belonging to the same hardware. Then, however, we're
+ * faced with having to adopt two different TSF timers...
+ */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ return -EBUSY;
+
+ /*
+ * Disallow multiple IBSS/STA mode interfaces.
+ *
+ * This is a technical restriction, it is possible although
+ * most likely not IEEE 802.11 compliant to have multiple
+ * STAs with just a single hardware (the TSF timer will not
+ * be adjusted properly.)
+ *
+ * However, because mac80211 uses the master device's BSS
+ * information for each STA/IBSS interface, doing this will
+ * currently corrupt that BSS information completely, unless,
+ * a not very useful case, both STAs are associated to the
+ * same BSS.
+ *
+ * To remove this restriction, the BSS information needs to
+ * be embedded in the STA/IBSS mode sdata instead of using
+ * the master device's BSS structure.
+ */
+ if ((sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) &&
+ (nsdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ nsdata->vif.type == IEEE80211_IF_TYPE_IBSS))
+ return -EBUSY;
+
+ /*
+ * The remaining checks are only performed for interfaces
+ * with the same MAC address.
+ */
+ if (compare_ether_addr(dev->dev_addr, ndev->dev_addr))
+ continue;
+
+ /*
+ * check whether it may have the same address
+ */
+ if (!identical_mac_addr_allowed(sdata->vif.type,
+ nsdata->vif.type))
+ return -ENOTUNIQ;
+
+ /*
+ * can only add VLANs to enabled APs
+ */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN &&
+ nsdata->vif.type == IEEE80211_IF_TYPE_AP)
+ sdata->u.vlan.ap = nsdata;
+ }
+ }
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_WDS:
+ if (!is_valid_ether_addr(sdata->u.wds.remote_addr))
+ return -ENOLINK;
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ if (!sdata->u.vlan.ap)
+ return -ENOLINK;
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_MNTR:
+ case IEEE80211_IF_TYPE_IBSS:
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ /* no special treatment */
+ break;
+ case IEEE80211_IF_TYPE_INVALID:
+ /* cannot happen */
+ WARN_ON(1);
+ break;
+ }
+
+ if (local->open_count == 0) {
+ res = 0;
+ if (local->ops->start)
+ res = local->ops->start(local_to_hw(local));
+ if (res)
+ return res;
+ need_hw_reconfig = 1;
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
+ }
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_VLAN:
+ list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans);
+ /* no need to tell driver */
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs++;
+ break;
+ }
+
+ /* must be before the call to ieee80211_configure_filter */
+ local->monitors++;
+ if (local->monitors == 1)
+ local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+
+ if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
+ local->fif_fcsfail++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
+ local->fif_plcpfail++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
+ local->fif_control++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
+ local->fif_other_bss++;
+
+ netif_tx_lock_bh(local->mdev);
+ ieee80211_configure_filter(local);
+ netif_tx_unlock_bh(local->mdev);
+ break;
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ /* fall through */
+ default:
+ conf.vif = &sdata->vif;
+ conf.type = sdata->vif.type;
+ conf.mac_addr = dev->dev_addr;
+ res = local->ops->add_interface(local_to_hw(local), &conf);
+ if (res)
+ goto err_stop;
+
+ ieee80211_if_config(dev);
+ ieee80211_reset_erp_info(dev);
+ ieee80211_enable_keys(sdata);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
+ netif_carrier_off(dev);
+ else
+ netif_carrier_on(dev);
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ /* Create STA entry for the WDS peer */
+ sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
+ GFP_KERNEL);
+ if (!sta) {
+ res = -ENOMEM;
+ goto err_del_interface;
+ }
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ res = sta_info_insert(sta);
+ if (res) {
+ /* STA has been freed */
+ goto err_del_interface;
+ }
+ }
+
+ if (local->open_count == 0) {
+ res = dev_open(local->mdev);
+ WARN_ON(res);
+ if (res)
+ goto err_del_interface;
+ tasklet_enable(&local->tx_pending_tasklet);
+ tasklet_enable(&local->tasklet);
+ }
+
+ /*
+ * set_multicast_list will be invoked by the networking core
+ * which will check whether any increments here were done in
+ * error and sync them down to the hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+
+ local->open_count++;
+ if (need_hw_reconfig)
+ ieee80211_hw_config(local);
+
+ /*
+ * ieee80211_sta_work is disabled while network interface
+ * is down. Therefore, some configuration changes may not
+ * yet be effective. Trigger execution of ieee80211_sta_work
+ * to fix this.
+ */
+ if(sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ queue_work(local->hw.workqueue, &ifsta->work);
+ }
+
+ netif_start_queue(dev);
+
+ return 0;
+ err_del_interface:
+ local->ops->remove_interface(local_to_hw(local), &conf);
+ err_stop:
+ if (!local->open_count && local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ return res;
+}
+
+static int ieee80211_stop(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_init_conf conf;
+ struct sta_info *sta;
+
+ /*
+ * Stop TX on this interface first.
+ */
+ netif_stop_queue(dev);
+
+ /*
+ * Now delete all active aggregation sessions.
+ */
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sta->sdata == sdata)
+ ieee80211_sta_tear_down_BA_sessions(dev, sta->addr);
+ }
+
+ rcu_read_unlock();
+
+ /*
+ * Remove all stations associated with this interface.
+ *
+ * This must be done before calling ops->remove_interface()
+ * because otherwise we can later invoke ops->sta_notify()
+ * whenever the STAs are removed, and that invalidates driver
+ * assumptions about always getting a vif pointer that is valid
+ * (because if we remove a STA after ops->remove_interface()
+ * the driver will have removed the vif info already!)
+ *
+ * We could relax this and only unlink the stations from the
+ * hash table and list but keep them on a per-sdata list that
+ * will be inserted back again when the interface is brought
+ * up again, but I don't currently see a use case for that,
+ * except with WDS which gets a STA entry created when it is
+ * brought up.
+ */
+ sta_info_flush(local, sdata);
+
+ /*
+ * Don't count this interface for promisc/allmulti while it
+ * is down. dev_mc_unsync() will invoke set_multicast_list
+ * on the master interface which will sync these down to the
+ * hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_dec(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_dec(&local->iff_promiscs);
+
+ dev_mc_unsync(local->mdev, dev);
+
+ /* APs need special treatment */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ struct ieee80211_sub_if_data *vlan, *tmp;
+ struct beacon_data *old_beacon = sdata->u.ap.beacon;
+
+ /* remove beacon */
+ rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ synchronize_rcu();
+ kfree(old_beacon);
+
+ /* down all dependent devices, that is VLANs */
+ list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans,
+ u.vlan.list)
+ dev_close(vlan->dev);
+ WARN_ON(!list_empty(&sdata->u.ap.vlans));
+ }
+
+ local->open_count--;
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_VLAN:
+ list_del(&sdata->u.vlan.list);
+ sdata->u.vlan.ap = NULL;
+ /* no need to tell driver */
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs--;
+ break;
+ }
+
+ local->monitors--;
+ if (local->monitors == 0)
+ local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+
+ if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
+ local->fif_fcsfail--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
+ local->fif_plcpfail--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
+ local->fif_control--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
+ local->fif_other_bss--;
+
+ netif_tx_lock_bh(local->mdev);
+ ieee80211_configure_filter(local);
+ netif_tx_unlock_bh(local->mdev);
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ sdata->u.sta.state = IEEE80211_DISABLED;
+ memset(sdata->u.sta.bssid, 0, ETH_ALEN);
+ del_timer_sync(&sdata->u.sta.timer);
+ /*
+ * When we get here, the interface is marked down.
+ * Call synchronize_rcu() to wait for the RX path
+ * should it be using the interface and enqueuing
+ * frames at this very time on another CPU.
+ */
+ synchronize_rcu();
+ skb_queue_purge(&sdata->u.sta.skb_queue);
+
+ if (local->scan_dev == sdata->dev) {
+ if (!local->ops->hw_scan) {
+ local->sta_sw_scanning = 0;
+ cancel_delayed_work(&local->scan_work);
+ } else
+ local->sta_hw_scanning = 0;
+ }
+
+ sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
+ kfree(sdata->u.sta.extra_ie);
+ sdata->u.sta.extra_ie = NULL;
+ sdata->u.sta.extra_ie_len = 0;
+ /* fall through */
+ default:
+ conf.vif = &sdata->vif;
+ conf.type = sdata->vif.type;
+ conf.mac_addr = dev->dev_addr;
+ /* disable all keys for as long as this netdev is down */
+ ieee80211_disable_keys(sdata);
+ local->ops->remove_interface(local_to_hw(local), &conf);
+ }
+
+ if (local->open_count == 0) {
+ if (netif_running(local->mdev))
+ dev_close(local->mdev);
+
+ if (local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+
+ ieee80211_led_radio(local, 0);
+
+ flush_workqueue(local->hw.workqueue);
+
+ tasklet_disable(&local->tx_pending_tasklet);
+ tasklet_disable(&local->tasklet);
+ }
+
+ return 0;
+}
+
+int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ u16 start_seq_num = 0;
+ u8 *state;
+ int ret;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM)
+ return -EINVAL;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ printk(KERN_DEBUG "Could not find the station\n");
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ /* we have tried too many times, receiver does not want A-MPDU */
+ if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
+ ret = -EBUSY;
+ goto start_ba_exit;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* check if the TID is not in aggregation flow already */
+ if (*state != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - session is not "
+ "idle on tid %u\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ ret = -EAGAIN;
+ goto start_ba_exit;
+ }
+
+ /* prepare A-MPDU MLME for Tx aggregation */
+ sta->ampdu_mlme.tid_tx[tid] =
+ kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
+ if (!sta->ampdu_mlme.tid_tx[tid]) {
+ if (net_ratelimit())
+ printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
+ tid);
+ ret = -ENOMEM;
+ goto start_ba_exit;
+ }
+ /* Tx timer */
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
+ sta_addba_resp_timer_expired;
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
+ (unsigned long)&sta->timer_to_tid[tid];
+ init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+
+ /* ensure that TX flow won't interrupt us
+ * until the end of the call to requeue function */
+ spin_lock_bh(&local->mdev->queue_lock);
+
+ /* create a new queue for this aggregation */
+ ret = ieee80211_ht_agg_queue_add(local, sta, tid);
+
+ /* case no queue is available to aggregation
+ * don't switch to aggregation */
+ if (ret) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - queue unavailable for"
+ " tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto start_ba_err;
+ }
+ sdata = sta->sdata;
+
+ /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
+ * call back right away, it must see that the flow has begun */
+ *state |= HT_ADDBA_REQUESTED_MSK;
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
+ ra, tid, &start_seq_num);
+
+ if (ret) {
+ /* No need to requeue the packets in the agg queue, since we
+ * held the tx lock: no packet could be enqueued to the newly
+ * allocated queue */
+ ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - HW unavailable for"
+ " tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ *state = HT_AGG_STATE_IDLE;
+ goto start_ba_err;
+ }
+
+ /* Will put all the packets in the new SW queue */
+ ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
+ spin_unlock_bh(&local->mdev->queue_lock);
+
+ /* send an addBA request */
+ sta->ampdu_mlme.dialog_token_allocator++;
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token =
+ sta->ampdu_mlme.dialog_token_allocator;
+ sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
+
+ ieee80211_send_addba_request(sta->sdata->dev, ra, tid,
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token,
+ sta->ampdu_mlme.tid_tx[tid]->ssn,
+ 0x40, 5000);
+
+ /* activate the timer for the recipient's addBA response */
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
+ jiffies + ADDBA_RESP_INTERVAL;
+ add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+ printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
+ goto start_ba_exit;
+
+start_ba_err:
+ kfree(sta->ampdu_mlme.tid_tx[tid]);
+ sta->ampdu_mlme.tid_tx[tid] = NULL;
+ spin_unlock_bh(&local->mdev->queue_lock);
+ ret = -EBUSY;
+start_ba_exit:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
+
+int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
+ u8 *ra, u16 tid,
+ enum ieee80211_back_parties initiator)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ int ret = 0;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM)
+ return -EINVAL;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ /* check if the TID is in aggregation */
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (*state != HT_AGG_STATE_OPERATIONAL) {
+ ret = -ENOENT;
+ goto stop_BA_exit;
+ }
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
+
+ *state = HT_AGG_STATE_REQ_STOP_BA_MSK |
+ (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
+ ra, tid, NULL);
+
+ /* case HW denied going back to legacy */
+ if (ret) {
+ WARN_ON(ret != -EBUSY);
+ *state = HT_AGG_STATE_OPERATIONAL;
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ goto stop_BA_exit;
+ }
+
+stop_BA_exit:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
+
+void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM) {
+ printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+ tid, STA_TID_NUM);
+ return;
+ }
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ printk(KERN_DEBUG "Could not find station: %s\n",
+ print_mac(mac, ra));
+ return;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
+ *state);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return;
+ }
+
+ WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
+
+ *state |= HT_ADDBA_DRV_READY_MSK;
+
+ if (*state == HT_AGG_STATE_OPERATIONAL) {
+ printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ }
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
+
+void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ int agg_queue;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM) {
+ printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+ tid, STA_TID_NUM);
+ return;
+ }
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ printk(KERN_DEBUG "Could not find station: %s\n",
+ print_mac(mac, ra));
+ rcu_read_unlock();
+ return;
+ }
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
+ printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return;
+ }
+
+ if (*state & HT_AGG_STATE_INITIATOR_MSK)
+ ieee80211_send_delba(sta->sdata->dev, ra, tid,
+ WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
+
+ agg_queue = sta->tid_to_tx_q[tid];
+
+ /* avoid ordering issues: we are the only one that can modify
+ * the content of the qdiscs */
+ spin_lock_bh(&local->mdev->queue_lock);
+ /* remove the queue for this aggregation */
+ ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
+ spin_unlock_bh(&local->mdev->queue_lock);
+
+ /* we just requeued the all the frames that were in the removed
+ * queue, and since we might miss a softirq we do netif_schedule.
+ * ieee80211_wake_queue is not used here as this queue is not
+ * necessarily stopped */
+ netif_schedule(local->mdev);
+ *state = HT_AGG_STATE_IDLE;
+ sta->ampdu_mlme.addba_req_num[tid] = 0;
+ kfree(sta->ampdu_mlme.tid_tx[tid]);
+ sta->ampdu_mlme.tid_tx[tid] = NULL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
+
+void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+ const u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_ra_tid *ra_tid;
+ struct sk_buff *skb = dev_alloc_skb(0);
+
+ if (unlikely(!skb)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping start BA session", skb->dev->name);
+ return;
+ }
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ memcpy(&ra_tid->ra, ra, ETH_ALEN);
+ ra_tid->tid = tid;
+
+ skb->pkt_type = IEEE80211_ADDBA_MSG;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
+
+void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+ const u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_ra_tid *ra_tid;
+ struct sk_buff *skb = dev_alloc_skb(0);
+
+ if (unlikely(!skb)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping stop BA session", skb->dev->name);
+ return;
+ }
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ memcpy(&ra_tid->ra, ra, ETH_ALEN);
+ ra_tid->tid = tid;
+
+ skb->pkt_type = IEEE80211_DELBA_MSG;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
+
+static void ieee80211_set_multicast_list(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int allmulti, promisc, sdata_allmulti, sdata_promisc;
+
+ allmulti = !!(dev->flags & IFF_ALLMULTI);
+ promisc = !!(dev->flags & IFF_PROMISC);
+ sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
+ sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC);
+
+ if (allmulti != sdata_allmulti) {
+ if (dev->flags & IFF_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+ else
+ atomic_dec(&local->iff_allmultis);
+ sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
+ }
+
+ if (promisc != sdata_promisc) {
+ if (dev->flags & IFF_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+ else
+ atomic_dec(&local->iff_promiscs);
+ sdata->flags ^= IEEE80211_SDATA_PROMISC;
+ }
+
+ dev_mc_sync(local->mdev, dev);
+}
+
+#if 0 /* Not in RHEL5 */
+static const struct header_ops ieee80211_header_ops = {
+ .create = eth_header,
+ .parse = header_parse_80211,
+ .rebuild = eth_rebuild_header,
+ .cache = eth_header_cache,
+ .cache_update = eth_header_cache_update,
+};
+#endif
+
+/* Must not be called for mdev */
+void ieee80211_if_setup(struct net_device *dev)
+{
+ ether_setup(dev);
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+ dev->wireless_handlers = &ieee80211_iw_handler_def;
+ dev->set_multicast_list = ieee80211_set_multicast_list;
+ dev->change_mtu = ieee80211_change_mtu;
+ dev->open = ieee80211_open;
+ dev->stop = ieee80211_stop;
+ dev->destructor = ieee80211_if_free;
+}
+
+/* everything else */
+
+static int __ieee80211_if_config(struct net_device *dev,
+ struct sk_buff *beacon,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_conf conf;
+
+ if (!local->ops->config_interface || !netif_running(dev))
+ return 0;
+
+ memset(&conf, 0, sizeof(conf));
+ conf.type = sdata->vif.type;
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ conf.bssid = sdata->u.sta.bssid;
+ conf.ssid = sdata->u.sta.ssid;
+ conf.ssid_len = sdata->u.sta.ssid_len;
+ } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ conf.beacon = beacon;
+ conf.beacon_control = control;
+ ieee80211_start_mesh(dev);
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ conf.ssid = sdata->u.ap.ssid;
+ conf.ssid_len = sdata->u.ap.ssid_len;
+ conf.beacon = beacon;
+ conf.beacon_control = control;
+ }
+ return local->ops->config_interface(local_to_hw(local),
+ &sdata->vif, &conf);
+}
+
+int ieee80211_if_config(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT &&
+ (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+ return ieee80211_if_config_beacon(dev);
+ return __ieee80211_if_config(dev, NULL, NULL);
+}
+
+int ieee80211_if_config_beacon(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_tx_control control;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb;
+
+ if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+ return 0;
+ skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif,
+ &control);
+ if (!skb)
+ return -ENOMEM;
+ return __ieee80211_if_config(dev, skb, &control);
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local)
+{
+ struct ieee80211_channel *chan;
+ int ret = 0;
+
+ if (local->sta_sw_scanning)
+ chan = local->scan_channel;
+ else
+ chan = local->oper_channel;
+
+ local->hw.conf.channel = chan;
+
+ if (!local->hw.conf.power_level)
+ local->hw.conf.power_level = chan->max_power;
+ else
+ local->hw.conf.power_level = min(chan->max_power,
+ local->hw.conf.power_level);
+
+ local->hw.conf.max_antenna_gain = chan->max_antenna_gain;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n",
+ wiphy_name(local->hw.wiphy), chan->center_freq);
+#endif
+
+ if (local->open_count)
+ ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+
+ return ret;
+}
+
+/**
+ * ieee80211_handle_ht should be used only after legacy configuration
+ * has been determined namely band, as ht configuration depends upon
+ * the hardware's HT abilities for a _specific_ band.
+ */
+u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
+ struct ieee80211_ht_info *req_ht_cap,
+ struct ieee80211_ht_bss_info *req_bss_cap)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_ht_info ht_conf;
+ struct ieee80211_ht_bss_info ht_bss_conf;
+ int i;
+ u32 changed = 0;
+
+ sband = local->hw.wiphy->bands[conf->channel->band];
+
+ /* HT is not supported */
+ if (!sband->ht_info.ht_supported) {
+ conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+ return 0;
+ }
+
+ memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info));
+ memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info));
+
+ if (enable_ht) {
+ if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE))
+ changed |= BSS_CHANGED_HT;
+
+ conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
+ ht_conf.ht_supported = 1;
+
+ ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
+ ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
+ ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
+
+ for (i = 0; i < SUPP_MCS_SET_LEN; i++)
+ ht_conf.supp_mcs_set[i] =
+ sband->ht_info.supp_mcs_set[i] &
+ req_ht_cap->supp_mcs_set[i];
+
+ ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
+ ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
+ ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
+
+ ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
+ ht_conf.ampdu_density = req_ht_cap->ampdu_density;
+
+ /* if bss configuration changed store the new one */
+ if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) ||
+ memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) {
+ changed |= BSS_CHANGED_HT;
+ memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf));
+ memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf));
+ }
+ } else {
+ if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)
+ changed |= BSS_CHANGED_HT;
+ conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+ }
+
+ return changed;
+}
+
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ if (!changed)
+ return;
+
+ if (local->ops->bss_info_changed)
+ local->ops->bss_info_changed(local_to_hw(local),
+ &sdata->vif,
+ &sdata->bss_conf,
+ changed);
+}
+
+void ieee80211_reset_erp_info(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ sdata->bss_conf.use_cts_prot = 0;
+ sdata->bss_conf.use_short_preamble = 0;
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_ERP_CTS_PROT |
+ BSS_CHANGED_ERP_PREAMBLE);
+}
+
+void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_tx_status *saved;
+ int tmp;
+
+ skb->dev = local->mdev;
+ saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
+ if (unlikely(!saved)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping tx status", skb->dev->name);
+ /* should be dev_kfree_skb_irq, but due to this function being
+ * named _irqsafe instead of just _irq we can't be sure that
+ * people won't call it from non-irq contexts */
+ dev_kfree_skb_any(skb);
+ return;
+ }
+ memcpy(saved, status, sizeof(struct ieee80211_tx_status));
+ /* copy pointer to saved status into skb->cb for use by tasklet */
+ memcpy(skb->cb, &saved, sizeof(saved));
+
+ skb->pkt_type = IEEE80211_TX_STATUS_MSG;
+ skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
+ &local->skb_queue : &local->skb_queue_unreliable, skb);
+ tmp = skb_queue_len(&local->skb_queue) +
+ skb_queue_len(&local->skb_queue_unreliable);
+ while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ memcpy(&saved, skb->cb, sizeof(saved));
+ kfree(saved);
+ dev_kfree_skb_irq(skb);
+ tmp--;
+ I802_DEBUG_INC(local->tx_status_drop);
+ }
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct sk_buff *skb;
+ struct ieee80211_rx_status rx_status;
+ struct ieee80211_tx_status *tx_status;
+ struct ieee80211_ra_tid *ra_tid;
+
+ while ((skb = skb_dequeue(&local->skb_queue)) ||
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ switch (skb->pkt_type) {
+ case IEEE80211_RX_MSG:
+ /* status is in skb->cb */
+ memcpy(&rx_status, skb->cb, sizeof(rx_status));
+ /* Clear skb->pkt_type in order to not confuse kernel
+ * netstack. */
+ skb->pkt_type = 0;
+ __ieee80211_rx(local_to_hw(local), skb, &rx_status);
+ break;
+ case IEEE80211_TX_STATUS_MSG:
+ /* get pointer to saved status out of skb->cb */
+ memcpy(&tx_status, skb->cb, sizeof(tx_status));
+ skb->pkt_type = 0;
+ ieee80211_tx_status(local_to_hw(local),
+ skb, tx_status);
+ kfree(tx_status);
+ break;
+ case IEEE80211_DELBA_MSG:
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ ieee80211_stop_tx_ba_cb(local_to_hw(local),
+ ra_tid->ra, ra_tid->tid);
+ dev_kfree_skb(skb);
+ break;
+ case IEEE80211_ADDBA_MSG:
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ ieee80211_start_tx_ba_cb(local_to_hw(local),
+ ra_tid->ra, ra_tid->tid);
+ dev_kfree_skb(skb);
+ break ;
+ default: /* should never get here! */
+ printk(KERN_ERR "%s: Unknown message type (%d)\n",
+ wiphy_name(local->hw.wiphy), skb->pkt_type);
+ dev_kfree_skb(skb);
+ break;
+ }
+ }
+}
+
+/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
+ * make a prepared TX frame (one that has been given to hw) to look like brand
+ * new IEEE 802.11 frame that is ready to go through TX processing again.
+ * Also, tx_packet_data in cb is restored from tx_control. */
+static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
+ struct ieee80211_key *key,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *control)
+{
+ int hdrlen, iv_len, mic_len;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+ pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex;
+ pkt_data->flags = 0;
+ if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
+ pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
+ if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
+ pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
+ if (control->flags & IEEE80211_TXCTL_REQUEUE)
+ pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+ if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME)
+ pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME;
+ pkt_data->queue = control->queue;
+
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+ if (!key)
+ goto no_key;
+
+ switch (key->conf.alg) {
+ case ALG_WEP:
+ iv_len = WEP_IV_LEN;
+ mic_len = WEP_ICV_LEN;
+ break;
+ case ALG_TKIP:
+ iv_len = TKIP_IV_LEN;
+ mic_len = TKIP_ICV_LEN;
+ break;
+ case ALG_CCMP:
+ iv_len = CCMP_HDR_LEN;
+ mic_len = CCMP_MIC_LEN;
+ break;
+ default:
+ goto no_key;
+ }
+
+ if (skb->len >= mic_len &&
+ !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
+ skb_trim(skb, skb->len - mic_len);
+ if (skb->len >= iv_len && skb->len > hdrlen) {
+ memmove(skb->data + iv_len, skb->data, hdrlen);
+ skb_pull(skb, iv_len);
+ }
+
+no_key:
+ {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
+ fc &= ~IEEE80211_STYPE_QOS_DATA;
+ hdr->frame_control = cpu_to_le16(fc);
+ memmove(skb->data + 2, skb->data, hdrlen - 2);
+ skb_pull(skb, 2);
+ }
+ }
+}
+
+static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
+ struct sta_info *sta,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ sta->tx_filtered_count++;
+
+ /*
+ * Clear the TX filter mask for this STA when sending the next
+ * packet. If the STA went to power save mode, this will happen
+ * when it wakes up for the next time.
+ */
+ sta->flags |= WLAN_STA_CLEAR_PS_FILT;
+
+ /*
+ * This code races in the following way:
+ *
+ * (1) STA sends frame indicating it will go to sleep and does so
+ * (2) hardware/firmware adds STA to filter list, passes frame up
+ * (3) hardware/firmware processes TX fifo and suppresses a frame
+ * (4) we get TX status before having processed the frame and
+ * knowing that the STA has gone to sleep.
+ *
+ * This is actually quite unlikely even when both those events are
+ * processed from interrupts coming in quickly after one another or
+ * even at the same time because we queue both TX status events and
+ * RX frames to be processed by a tasklet and process them in the
+ * same order that they were received or TX status last. Hence, there
+ * is no race as long as the frame RX is processed before the next TX
+ * status, which drivers can ensure, see below.
+ *
+ * Note that this can only happen if the hardware or firmware can
+ * actually add STAs to the filter list, if this is done by the
+ * driver in response to set_tim() (which will only reduce the race
+ * this whole filtering tries to solve, not completely solve it)
+ * this situation cannot happen.
+ *
+ * To completely solve this race drivers need to make sure that they
+ * (a) don't mix the irq-safe/not irq-safe TX status/RX processing
+ * functions and
+ * (b) always process RX events before TX status events if ordering
+ * can be unknown, for example with different interrupt status
+ * bits.
+ */
+ if (sta->flags & WLAN_STA_PS &&
+ skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
+ ieee80211_remove_tx_extra(local, sta->key, skb,
+ &status->control);
+ skb_queue_tail(&sta->tx_filtered, skb);
+ return;
+ }
+
+ if (!(sta->flags & WLAN_STA_PS) &&
+ !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
+ /* Software retry the packet once */
+ status->control.flags |= IEEE80211_TXCTL_REQUEUE;
+ ieee80211_remove_tx_extra(local, sta->key, skb,
+ &status->control);
+ dev_queue_xmit(skb);
+ return;
+ }
+
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped TX filtered frame, "
+ "queue_len=%d PS=%d @%lu\n",
+ wiphy_name(local->hw.wiphy),
+ skb_queue_len(&sta->tx_filtered),
+ !!(sta->flags & WLAN_STA_PS), jiffies);
+ dev_kfree_skb(skb);
+}
+
+void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct sk_buff *skb2;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_local *local = hw_to_local(hw);
+ u16 frag, type;
+ struct ieee80211_tx_status_rtap_hdr *rthdr;
+ struct ieee80211_sub_if_data *sdata;
+ struct net_device *prev_dev = NULL;
+
+ if (!status) {
+ printk(KERN_ERR
+ "%s: ieee80211_tx_status called with NULL status\n",
+ wiphy_name(local->hw.wiphy));
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ rcu_read_lock();
+
+ if (status->excessive_retries) {
+ struct sta_info *sta;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ if (sta->flags & WLAN_STA_PS) {
+ /*
+ * The STA is in power save mode, so assume
+ * that this TX packet failed because of that.
+ */
+ status->excessive_retries = 0;
+ status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
+ ieee80211_handle_filtered_frame(local, sta,
+ skb, status);
+ rcu_read_unlock();
+ return;
+ }
+ }
+ }
+
+ if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
+ struct sta_info *sta;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ ieee80211_handle_filtered_frame(local, sta, skb,
+ status);
+ rcu_read_unlock();
+ return;
+ }
+ } else
+ rate_control_tx_status(local->mdev, skb, status);
+
+ rcu_read_unlock();
+
+ ieee80211_led_tx(local, 0);
+
+ /* SNMP counters
+ * Fragments are passed to low-level drivers as separate skbs, so these
+ * are actually fragments, not frames. Update frame counters only for
+ * the first fragment of the frame. */
+
+ frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
+ type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
+
+ if (status->flags & IEEE80211_TX_STATUS_ACK) {
+ if (frag == 0) {
+ local->dot11TransmittedFrameCount++;
+ if (is_multicast_ether_addr(hdr->addr1))
+ local->dot11MulticastTransmittedFrameCount++;
+ if (status->retry_count > 0)
+ local->dot11RetryCount++;
+ if (status->retry_count > 1)
+ local->dot11MultipleRetryCount++;
+ }
+
+ /* This counter shall be incremented for an acknowledged MPDU
+ * with an individual address in the address 1 field or an MPDU
+ * with a multicast address in the address 1 field of type Data
+ * or Management. */
+ if (!is_multicast_ether_addr(hdr->addr1) ||
+ type == IEEE80211_FTYPE_DATA ||
+ type == IEEE80211_FTYPE_MGMT)
+ local->dot11TransmittedFragmentCount++;
+ } else {
+ if (frag == 0)
+ local->dot11FailedCount++;
+ }
+
+ /* this was a transmitted frame, but now we want to reuse it */
+ skb_orphan(skb);
+
+ /*
+ * This is a bit racy but we can avoid a lot of work
+ * with this test...
+ */
+ if (!local->monitors && !local->cooked_mntrs) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ /* send frame to monitor interfaces now */
+
+ if (skb_headroom(skb) < sizeof(*rthdr)) {
+ printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ rthdr = (struct ieee80211_tx_status_rtap_hdr*)
+ skb_push(skb, sizeof(*rthdr));
+
+ memset(rthdr, 0, sizeof(*rthdr));
+ rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
+ rthdr->hdr.it_present =
+ cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
+ (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+
+ if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
+ !is_multicast_ether_addr(hdr->addr1))
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
+
+ if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
+ (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
+ else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+
+ rthdr->data_retries = status->retry_count;
+
+ /* XXX: is this sufficient for BPF? */
+ skb_set_mac_header(skb, 0);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = htons(ETH_P_802_2);
+ memset(skb->cb, 0, sizeof(skb->cb));
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) {
+ if (!netif_running(sdata->dev))
+ continue;
+
+ if (prev_dev) {
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2) {
+ skb2->dev = prev_dev;
+ netif_rx(skb2);
+ }
+ }
+
+ prev_dev = sdata->dev;
+ }
+ }
+ if (prev_dev) {
+ skb->dev = prev_dev;
+ netif_rx(skb);
+ skb = NULL;
+ }
+ rcu_read_unlock();
+ dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL(ieee80211_tx_status);
+
+struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
+ const struct ieee80211_ops *ops)
+{
+ struct ieee80211_local *local;
+ int priv_size;
+ struct wiphy *wiphy;
+
+ /* Ensure 32-byte alignment of our private data and hw private data.
+ * We use the wiphy priv data for both our ieee80211_local and for
+ * the driver's private data
+ *
+ * In memory it'll be like this:
+ *
+ * +-------------------------+
+ * | struct wiphy |
+ * +-------------------------+
+ * | struct ieee80211_local |
+ * +-------------------------+
+ * | driver's private data |
+ * +-------------------------+
+ *
+ */
+ priv_size = ((sizeof(struct ieee80211_local) +
+ NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
+ priv_data_len;
+
+ wiphy = wiphy_new(&mac80211_config_ops, priv_size);
+
+ if (!wiphy)
+ return NULL;
+
+ wiphy->privid = mac80211_wiphy_privid;
+
+ local = wiphy_priv(wiphy);
+ local->hw.wiphy = wiphy;
+
+ local->hw.priv = (char *)local +
+ ((sizeof(struct ieee80211_local) +
+ NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+
+ BUG_ON(!ops->tx);
+ BUG_ON(!ops->start);
+ BUG_ON(!ops->stop);
+ BUG_ON(!ops->config);
+ BUG_ON(!ops->add_interface);
+ BUG_ON(!ops->remove_interface);
+ BUG_ON(!ops->configure_filter);
+ local->ops = ops;
+
+ local->hw.queues = 1; /* default */
+
+ local->bridge_packets = 1;
+
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ local->short_retry_limit = 7;
+ local->long_retry_limit = 4;
+ local->hw.conf.radio_enabled = 1;
+
+ INIT_LIST_HEAD(&local->interfaces);
+
+ spin_lock_init(&local->key_lock);
+
+ INIT_WORK(&local->scan_work, ieee80211_sta_scan_work, local);
+
+ sta_info_init(local);
+
+ tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
+ (unsigned long)local);
+ tasklet_disable(&local->tx_pending_tasklet);
+
+ tasklet_init(&local->tasklet,
+ ieee80211_tasklet_handler,
+ (unsigned long) local);
+ tasklet_disable(&local->tasklet);
+
+ skb_queue_head_init(&local->skb_queue);
+ skb_queue_head_init(&local->skb_queue_unreliable);
+
+ return local_to_hw(local);
+}
+EXPORT_SYMBOL(ieee80211_alloc_hw);
+
+int ieee80211_register_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ const char *name;
+ int result;
+ enum ieee80211_band band;
+ struct net_device *mdev;
+ struct ieee80211_sub_if_data *sdata;
+
+ /*
+ * generic code guarantees at least one band,
+ * set this very early because much code assumes
+ * that hw.conf.channel is assigned
+ */
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[band];
+ if (sband) {
+ /* init channel we're on */
+ local->hw.conf.channel =
+ local->oper_channel =
+ local->scan_channel = &sband->channels[0];
+ break;
+ }
+ }
+
+ result = wiphy_register(local->hw.wiphy);
+ if (result < 0)
+ return result;
+
+ /* for now, mdev needs sub_if_data :/ */
+ mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+ "wmaster%d", ether_setup);
+ if (!mdev)
+ goto fail_mdev_alloc;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
+ mdev->ieee80211_ptr = &sdata->wdev;
+ sdata->wdev.wiphy = local->hw.wiphy;
+
+ local->mdev = mdev;
+
+ ieee80211_rx_bss_list_init(mdev);
+
+ mdev->hard_start_xmit = ieee80211_master_start_xmit;
+ mdev->open = ieee80211_master_open;
+ mdev->stop = ieee80211_master_stop;
+ mdev->type = ARPHRD_IEEE80211;
+#if 0 /* Not in RHEL5 */
+ mdev->header_ops = &ieee80211_header_ops;
+#else
+ mdev->hard_header_parse = header_parse_80211;
+#endif
+ mdev->set_multicast_list = ieee80211_master_set_multicast_list;
+
+ sdata->vif.type = IEEE80211_IF_TYPE_AP;
+ sdata->dev = mdev;
+ sdata->local = local;
+ sdata->u.ap.force_unicast_rateidx = -1;
+ sdata->u.ap.max_ratectrl_rateidx = -1;
+ ieee80211_if_sdata_init(sdata);
+
+ /* no RCU needed since we're still during init phase */
+ list_add_tail(&sdata->list, &local->interfaces);
+
+ name = wiphy_dev(local->hw.wiphy)->driver->name;
+ local->hw.workqueue = create_singlethread_workqueue(name);
+ if (!local->hw.workqueue) {
+ result = -ENOMEM;
+ goto fail_workqueue;
+ }
+
+ /*
+ * The hardware needs headroom for sending the frame,
+ * and we need some headroom for passing the frame to monitor
+ * interfaces, but never both at the same time.
+ */
+ local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
+ sizeof(struct ieee80211_tx_status_rtap_hdr));
+
+ debugfs_hw_add(local);
+
+ local->hw.conf.beacon_int = 1000;
+
+ local->wstats_flags |= local->hw.max_rssi ?
+ IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
+ local->wstats_flags |= local->hw.max_signal ?
+ IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
+ local->wstats_flags |= local->hw.max_noise ?
+ IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
+ if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
+ local->wstats_flags |= IW_QUAL_DBM;
+
+ result = sta_info_start(local);
+ if (result < 0)
+ goto fail_sta_info;
+
+ rtnl_lock();
+ result = dev_alloc_name(local->mdev, local->mdev->name);
+ if (result < 0)
+ goto fail_dev;
+
+ memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+ SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
+
+ result = register_netdevice(local->mdev);
+ if (result < 0)
+ goto fail_dev;
+
+ ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+ ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP);
+
+ result = ieee80211_init_rate_ctrl_alg(local,
+ hw->rate_control_algorithm);
+ if (result < 0) {
+ printk(KERN_DEBUG "%s: Failed to initialize rate control "
+ "algorithm\n", wiphy_name(local->hw.wiphy));
+ goto fail_rate;
+ }
+
+ result = ieee80211_wep_init(local);
+
+ if (result < 0) {
+ printk(KERN_DEBUG "%s: Failed to initialize wep\n",
+ wiphy_name(local->hw.wiphy));
+ goto fail_wep;
+ }
+
+ ieee80211_install_qdisc(local->mdev);
+
+ /* add one default STA interface */
+ result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
+ IEEE80211_IF_TYPE_STA, NULL);
+ if (result)
+ printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
+ wiphy_name(local->hw.wiphy));
+
+ local->reg_state = IEEE80211_DEV_REGISTERED;
+ rtnl_unlock();
+
+ ieee80211_led_init(local);
+
+ return 0;
+
+fail_wep:
+ rate_control_deinitialize(local);
+fail_rate:
+ ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+ unregister_netdevice(local->mdev);
+ local->mdev = NULL;
+fail_dev:
+ rtnl_unlock();
+ sta_info_stop(local);
+fail_sta_info:
+ debugfs_hw_del(local);
+ destroy_workqueue(local->hw.workqueue);
+fail_workqueue:
+ if (local->mdev != NULL) {
+ ieee80211_if_free(local->mdev);
+ local->mdev = NULL;
+ }
+fail_mdev_alloc:
+ wiphy_unregister(local->hw.wiphy);
+ return result;
+}
+EXPORT_SYMBOL(ieee80211_register_hw);
+
+void ieee80211_unregister_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata, *tmp;
+
+ tasklet_kill(&local->tx_pending_tasklet);
+ tasklet_kill(&local->tasklet);
+
+ rtnl_lock();
+
+ BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
+
+ local->reg_state = IEEE80211_DEV_UNREGISTERED;
+
+ /*
+ * At this point, interface list manipulations are fine
+ * because the driver cannot be handing us frames any
+ * more and the tasklet is killed.
+ */
+
+ /*
+ * First, we remove all non-master interfaces. Do this because they
+ * may have bss pointer dependency on the master, and when we free
+ * the master these would be freed as well, breaking our list
+ * iteration completely.
+ */
+ list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
+ if (sdata->dev == local->mdev)
+ continue;
+ list_del(&sdata->list);
+ __ieee80211_if_del(local, sdata);
+ }
+
+ /* then, finally, remove the master interface */
+ __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev));
+
+ rtnl_unlock();
+
+ ieee80211_rx_bss_list_deinit(local->mdev);
+ ieee80211_clear_tx_pending(local);
+ sta_info_stop(local);
+ rate_control_deinitialize(local);
+ debugfs_hw_del(local);
+
+ if (skb_queue_len(&local->skb_queue)
+ || skb_queue_len(&local->skb_queue_unreliable))
+ printk(KERN_WARNING "%s: skb_queue not empty\n",
+ wiphy_name(local->hw.wiphy));
+ skb_queue_purge(&local->skb_queue);
+ skb_queue_purge(&local->skb_queue_unreliable);
+
+ destroy_workqueue(local->hw.workqueue);
+ wiphy_unregister(local->hw.wiphy);
+ ieee80211_wep_free(local);
+ ieee80211_led_exit(local);
+ ieee80211_if_free(local->mdev);
+ local->mdev = NULL;
+}
+EXPORT_SYMBOL(ieee80211_unregister_hw);
+
+void ieee80211_free_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ wiphy_free(local->hw.wiphy);
+}
+EXPORT_SYMBOL(ieee80211_free_hw);
+
+static int __init ieee80211_init(void)
+{
+ struct sk_buff *skb;
+ int ret;
+
+ BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
+
+ ret = rc80211_pid_init();
+ if (ret)
+ goto out;
+
+ ret = ieee80211_wme_register();
+ if (ret) {
+ printk(KERN_DEBUG "ieee80211_init: failed to "
+ "initialize WME (err=%d)\n", ret);
+ goto out_cleanup_pid;
+ }
+
+ ieee80211_debugfs_netdev_init();
+
+ return 0;
+
+ out_cleanup_pid:
+ rc80211_pid_exit();
+ out:
+ return ret;
+}
+
+static void __exit ieee80211_exit(void)
+{
+ rc80211_pid_exit();
+
+ /*
+ * For key todo, it'll be empty by now but the work
+ * might still be scheduled.
+ */
+ flush_scheduled_work();
+
+ if (mesh_allocated)
+ ieee80211s_stop();
+
+ ieee80211_wme_unregister();
+ ieee80211_debugfs_netdev_exit();
+}
+
+
+subsys_initcall(ieee80211_init);
+module_exit(ieee80211_exit);
+
+MODULE_DESCRIPTION("IEEE 802.11 subsystem");
+MODULE_LICENSE("GPL");
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
new file mode 100644
index 0000000..697ef67
--- /dev/null
+++ b/net/mac80211/mesh.c
@@ -0,0 +1,442 @@
+/*
+ * Copyright (c) 2008 open80211s Ltd.
+ * Authors: Luis Carlos Cobo <luisca@cozybit.com>
+ * Javier Cardona <javier@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <asm/unaligned.h>
+#include "ieee80211_i.h"
+#include "mesh.h"
+
+#define PP_OFFSET 1 /* Path Selection Protocol */
+#define PM_OFFSET 5 /* Path Selection Metric */
+#define CC_OFFSET 9 /* Congestion Control Mode */
+#define CAPAB_OFFSET 17
+#define ACCEPT_PLINKS 0x80
+
+int mesh_allocated;
+static struct kmem_cache *rm_cache;
+
+void ieee80211s_init(void)
+{
+ mesh_pathtbl_init();
+ mesh_allocated = 1;
+ rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
+ 0, 0, NULL);
+}
+
+void ieee80211s_stop(void)
+{
+ mesh_pathtbl_unregister();
+ kmem_cache_destroy(rm_cache);
+}
+
+/**
+ * mesh_matches_local - check if the config of a mesh point matches ours
+ *
+ * @ie: information elements of a management frame from the mesh peer
+ * @dev: local mesh interface
+ *
+ * This function checks if the mesh configuration of a mesh point matches the
+ * local mesh configuration, i.e. if both nodes belong to the same mesh network.
+ */
+bool mesh_matches_local(struct ieee802_11_elems *ie, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *sta = &sdata->u.sta;
+
+ /*
+ * As support for each feature is added, check for matching
+ * - On mesh config capabilities
+ * - Power Save Support En
+ * - Sync support enabled
+ * - Sync support active
+ * - Sync support required from peer
+ * - MDA enabled
+ * - Power management control on fc
+ */
+ if (sta->mesh_id_len == ie->mesh_id_len &&
+ memcmp(sta->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
+ memcmp(sta->mesh_pp_id, ie->mesh_config + PP_OFFSET, 4) == 0 &&
+ memcmp(sta->mesh_pm_id, ie->mesh_config + PM_OFFSET, 4) == 0 &&
+ memcmp(sta->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0)
+ return true;
+
+ return false;
+}
+
+/**
+ * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
+ *
+ * @ie: information elements of a management frame from the mesh peer
+ * @dev: local mesh interface
+ */
+bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie,
+ struct net_device *dev)
+{
+ return (*(ie->mesh_config + CAPAB_OFFSET) & ACCEPT_PLINKS) != 0;
+}
+
+/**
+ * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
+ *
+ * @sdata: mesh interface in which mesh beacons are going to be updated
+ */
+void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
+{
+ bool free_plinks;
+
+ /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
+ * the mesh interface might be able to establish plinks with peers that
+ * are already on the table but are not on PLINK_ESTAB state. However,
+ * in general the mesh interface is not accepting peer link requests
+ * from new peers, and that must be reflected in the beacon
+ */
+ free_plinks = mesh_plink_availables(sdata);
+
+ if (free_plinks != sdata->u.sta.accepting_plinks)
+ ieee80211_sta_timer((unsigned long) sdata);
+}
+
+void mesh_ids_set_default(struct ieee80211_if_sta *sta)
+{
+ u8 def_id[4] = {0x00, 0x0F, 0xAC, 0xff};
+
+ memcpy(sta->mesh_pp_id, def_id, 4);
+ memcpy(sta->mesh_pm_id, def_id, 4);
+ memcpy(sta->mesh_cc_id, def_id, 4);
+}
+
+int mesh_rmc_init(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int i;
+
+ sdata->u.sta.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
+ if (!sdata->u.sta.rmc)
+ return -ENOMEM;
+ sdata->u.sta.rmc->idx_mask = RMC_BUCKETS - 1;
+ for (i = 0; i < RMC_BUCKETS; i++)
+ INIT_LIST_HEAD(&sdata->u.sta.rmc->bucket[i].list);
+ return 0;
+}
+
+void mesh_rmc_free(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_rmc *rmc = sdata->u.sta.rmc;
+ struct rmc_entry *p, *n;
+ int i;
+
+ if (!sdata->u.sta.rmc)
+ return;
+
+ for (i = 0; i < RMC_BUCKETS; i++)
+ list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
+ list_del(&p->list);
+ kmem_cache_free(rm_cache, p);
+ }
+
+ kfree(rmc);
+ sdata->u.sta.rmc = NULL;
+}
+
+/**
+ * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
+ *
+ * @sa: source address
+ * @mesh_hdr: mesh_header
+ *
+ * Returns: 0 if the frame is not in the cache, nonzero otherwise.
+ *
+ * Checks using the source address and the mesh sequence number if we have
+ * received this frame lately. If the frame is not in the cache, it is added to
+ * it.
+ */
+int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
+ struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_rmc *rmc = sdata->u.sta.rmc;
+ u32 seqnum = 0;
+ int entries = 0;
+ u8 idx;
+ struct rmc_entry *p, *n;
+
+ /* Don't care about endianness since only match matters */
+ memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
+ idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
+ list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
+ ++entries;
+ if (time_after(jiffies, p->exp_time) ||
+ (entries == RMC_QUEUE_MAX_LEN)) {
+ list_del(&p->list);
+ kmem_cache_free(rm_cache, p);
+ --entries;
+ } else if ((seqnum == p->seqnum)
+ && (memcmp(sa, p->sa, ETH_ALEN) == 0))
+ return -1;
+ }
+
+ p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
+ if (!p) {
+ printk(KERN_DEBUG "o11s: could not allocate RMC entry\n");
+ return 0;
+ }
+ p->seqnum = seqnum;
+ p->exp_time = jiffies + RMC_TIMEOUT;
+ memcpy(p->sa, sa, ETH_ALEN);
+ list_add(&p->list, &rmc->bucket[idx].list);
+ return 0;
+}
+
+void mesh_mgmt_ies_add(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_supported_band *sband;
+ u8 *pos;
+ int len, i, rate;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ len = sband->n_bitrates;
+ if (len > 8)
+ len = 8;
+ pos = skb_put(skb, len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = len;
+ for (i = 0; i < len; i++) {
+ rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ if (sband->n_bitrates > len) {
+ pos = skb_put(skb, sband->n_bitrates - len + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = sband->n_bitrates - len;
+ for (i = len; i < sband->n_bitrates; i++) {
+ rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+
+ pos = skb_put(skb, 2 + sdata->u.sta.mesh_id_len);
+ *pos++ = WLAN_EID_MESH_ID;
+ *pos++ = sdata->u.sta.mesh_id_len;
+ if (sdata->u.sta.mesh_id_len)
+ memcpy(pos, sdata->u.sta.mesh_id, sdata->u.sta.mesh_id_len);
+
+ pos = skb_put(skb, 21);
+ *pos++ = WLAN_EID_MESH_CONFIG;
+ *pos++ = MESH_CFG_LEN;
+ /* Version */
+ *pos++ = 1;
+
+ /* Active path selection protocol ID */
+ memcpy(pos, sdata->u.sta.mesh_pp_id, 4);
+ pos += 4;
+
+ /* Active path selection metric ID */
+ memcpy(pos, sdata->u.sta.mesh_pm_id, 4);
+ pos += 4;
+
+ /* Congestion control mode identifier */
+ memcpy(pos, sdata->u.sta.mesh_cc_id, 4);
+ pos += 4;
+
+ /* Channel precedence:
+ * Not running simple channel unification protocol
+ */
+ memset(pos, 0x00, 4);
+ pos += 4;
+
+ /* Mesh capability */
+ sdata->u.sta.accepting_plinks = mesh_plink_availables(sdata);
+ *pos++ = sdata->u.sta.accepting_plinks ? ACCEPT_PLINKS : 0x00;
+ *pos++ = 0x00;
+
+ return;
+}
+
+u32 mesh_table_hash(u8 *addr, struct net_device *dev, struct mesh_table *tbl)
+{
+ /* Use last four bytes of hw addr and interface index as hash index */
+ return jhash_2words(*(u32 *)(addr+2), dev->ifindex, tbl->hash_rnd)
+ & tbl->hash_mask;
+}
+
+u8 mesh_id_hash(u8 *mesh_id, int mesh_id_len)
+{
+ if (!mesh_id_len)
+ return 1;
+ else if (mesh_id_len == 1)
+ return (u8) mesh_id[0];
+ else
+ return (u8) (mesh_id[0] + 2 * mesh_id[1]);
+}
+
+struct mesh_table *mesh_table_alloc(int size_order)
+{
+ int i;
+ struct mesh_table *newtbl;
+
+ newtbl = kmalloc(sizeof(struct mesh_table), GFP_KERNEL);
+ if (!newtbl)
+ return NULL;
+
+ newtbl->hash_buckets = kzalloc(sizeof(struct hlist_head) *
+ (1 << size_order), GFP_KERNEL);
+
+ if (!newtbl->hash_buckets) {
+ kfree(newtbl);
+ return NULL;
+ }
+
+ newtbl->hashwlock = kmalloc(sizeof(spinlock_t) *
+ (1 << size_order), GFP_KERNEL);
+ if (!newtbl->hashwlock) {
+ kfree(newtbl->hash_buckets);
+ kfree(newtbl);
+ return NULL;
+ }
+
+ newtbl->size_order = size_order;
+ newtbl->hash_mask = (1 << size_order) - 1;
+ atomic_set(&newtbl->entries, 0);
+ get_random_bytes(&newtbl->hash_rnd,
+ sizeof(newtbl->hash_rnd));
+ for (i = 0; i <= newtbl->hash_mask; i++)
+ spin_lock_init(&newtbl->hashwlock[i]);
+
+ return newtbl;
+}
+
+void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
+{
+ struct hlist_head *mesh_hash;
+ struct hlist_node *p, *q;
+ int i;
+
+ mesh_hash = tbl->hash_buckets;
+ for (i = 0; i <= tbl->hash_mask; i++) {
+ spin_lock(&tbl->hashwlock[i]);
+ hlist_for_each_safe(p, q, &mesh_hash[i]) {
+ tbl->free_node(p, free_leafs);
+ atomic_dec(&tbl->entries);
+ }
+ spin_unlock(&tbl->hashwlock[i]);
+ }
+ kfree(tbl->hash_buckets);
+ kfree(tbl->hashwlock);
+ kfree(tbl);
+}
+
+static void ieee80211_mesh_path_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(&sdata->wdev);
+
+ queue_work(local->hw.workqueue, &ifsta->work);
+}
+
+struct mesh_table *mesh_table_grow(struct mesh_table *tbl)
+{
+ struct mesh_table *newtbl;
+ struct hlist_head *oldhash;
+ struct hlist_node *p;
+ int err = 0;
+ int i;
+
+ if (atomic_read(&tbl->entries)
+ < tbl->mean_chain_len * (tbl->hash_mask + 1)) {
+ err = -EPERM;
+ goto endgrow;
+ }
+
+ newtbl = mesh_table_alloc(tbl->size_order + 1);
+ if (!newtbl) {
+ err = -ENOMEM;
+ goto endgrow;
+ }
+
+ newtbl->free_node = tbl->free_node;
+ newtbl->mean_chain_len = tbl->mean_chain_len;
+ newtbl->copy_node = tbl->copy_node;
+ atomic_set(&newtbl->entries, atomic_read(&tbl->entries));
+
+ oldhash = tbl->hash_buckets;
+ for (i = 0; i <= tbl->hash_mask; i++)
+ hlist_for_each(p, &oldhash[i])
+ tbl->copy_node(p, newtbl);
+
+endgrow:
+ if (err)
+ return NULL;
+ else
+ return newtbl;
+}
+
+/**
+ * ieee80211_new_mesh_header - create a new mesh header
+ * @meshhdr: uninitialized mesh header
+ * @sdata: mesh interface to be used
+ *
+ * Return the header length.
+ */
+int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
+ struct ieee80211_sub_if_data *sdata)
+{
+ meshhdr->flags = 0;
+ meshhdr->ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
+ put_unaligned(cpu_to_le32(sdata->u.sta.mesh_seqnum), &meshhdr->seqnum);
+ sdata->u.sta.mesh_seqnum++;
+
+ return 6;
+}
+
+void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ ifsta->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
+ ifsta->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
+ ifsta->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
+ ifsta->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
+ ifsta->mshcfg.dot11MeshTTL = MESH_TTL;
+ ifsta->mshcfg.auto_open_plinks = true;
+ ifsta->mshcfg.dot11MeshMaxPeerLinks =
+ MESH_MAX_ESTAB_PLINKS;
+ ifsta->mshcfg.dot11MeshHWMPactivePathTimeout =
+ MESH_PATH_TIMEOUT;
+ ifsta->mshcfg.dot11MeshHWMPpreqMinInterval =
+ MESH_PREQ_MIN_INT;
+ ifsta->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
+ MESH_DIAM_TRAVERSAL_TIME;
+ ifsta->mshcfg.dot11MeshHWMPmaxPREQretries =
+ MESH_MAX_PREQ_RETRIES;
+ ifsta->mshcfg.path_refresh_time =
+ MESH_PATH_REFRESH_TIME;
+ ifsta->mshcfg.min_discovery_timeout =
+ MESH_MIN_DISCOVERY_TIMEOUT;
+ ifsta->accepting_plinks = true;
+ ifsta->preq_id = 0;
+ ifsta->dsn = 0;
+ atomic_set(&ifsta->mpaths, 0);
+ mesh_rmc_init(sdata->dev);
+ ifsta->last_preq = jiffies;
+ /* Allocate all mesh structures when creating the first mesh interface. */
+ if (!mesh_allocated)
+ ieee80211s_init();
+ mesh_ids_set_default(ifsta);
+ setup_timer(&ifsta->mesh_path_timer,
+ ieee80211_mesh_path_timer,
+ (unsigned long) sdata);
+ INIT_LIST_HEAD(&ifsta->preq_queue.list);
+ spin_lock_init(&ifsta->mesh_preq_queue_lock);
+}
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
new file mode 100644
index 0000000..2e161f6
--- /dev/null
+++ b/net/mac80211/mesh.h
@@ -0,0 +1,291 @@
+/*
+ * Copyright (c) 2008 open80211s Ltd.
+ * Authors: Luis Carlos Cobo <luisca@cozybit.com>
+ * Javier Cardona <javier@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211S_H
+#define IEEE80211S_H
+
+#include <linux/types.h>
+#include <linux/jhash.h>
+#include <asm/unaligned.h>
+#include "ieee80211_i.h"
+
+
+/* Data structures */
+
+/**
+ * enum mesh_path_flags - mac80211 mesh path flags
+ *
+ *
+ *
+ * @MESH_PATH_ACTIVE: the mesh path is can be used for forwarding
+ * @MESH_PATH_RESOLVED: the discovery process is running for this mesh path
+ * @MESH_PATH_DSN_VALID: the mesh path contains a valid destination sequence
+ * number
+ * @MESH_PATH_FIXED: the mesh path has been manually set and should not be
+ * modified
+ * @MESH_PATH_RESOLVED: the mesh path can has been resolved
+ *
+ * MESH_PATH_RESOLVED and MESH_PATH_DELETE are used by the mesh path timer to
+ * decide when to stop or cancel the mesh path discovery.
+ */
+enum mesh_path_flags {
+ MESH_PATH_ACTIVE = BIT(0),
+ MESH_PATH_RESOLVING = BIT(1),
+ MESH_PATH_DSN_VALID = BIT(2),
+ MESH_PATH_FIXED = BIT(3),
+ MESH_PATH_RESOLVED = BIT(4),
+};
+
+/**
+ * struct mesh_path - mac80211 mesh path structure
+ *
+ * @dst: mesh path destination mac address
+ * @dev: mesh path device
+ * @next_hop: mesh neighbor to which frames for this destination will be
+ * forwarded
+ * @timer: mesh path discovery timer
+ * @frame_queue: pending queue for frames sent to this destination while the
+ * path is unresolved
+ * @dsn: destination sequence number of the destination
+ * @metric: current metric to this destination
+ * @hop_count: hops to destination
+ * @exp_time: in jiffies, when the path will expire or when it expired
+ * @discovery_timeout: timeout (lapse in jiffies) used for the last discovery
+ * retry
+ * @discovery_retries: number of discovery retries
+ * @flags: mesh path flags, as specified on &enum mesh_path_flags
+ * @state_lock: mesh pat state lock
+ *
+ *
+ * The combination of dst and dev is unique in the mesh path table. Since the
+ * next_hop STA is only protected by RCU as well, deleting the STA must also
+ * remove/substitute the mesh_path structure and wait until that is no longer
+ * reachable before destroying the STA completely.
+ */
+struct mesh_path {
+ u8 dst[ETH_ALEN];
+ struct net_device *dev;
+ struct sta_info *next_hop;
+ struct timer_list timer;
+ struct sk_buff_head frame_queue;
+ struct rcu_head rcu;
+ u32 dsn;
+ u32 metric;
+ u8 hop_count;
+ unsigned long exp_time;
+ u32 discovery_timeout;
+ u8 discovery_retries;
+ enum mesh_path_flags flags;
+ spinlock_t state_lock;
+};
+
+/**
+ * struct mesh_table
+ *
+ * @hash_buckets: array of hash buckets of the table
+ * @hashwlock: array of locks to protect write operations, one per bucket
+ * @hash_mask: 2^size_order - 1, used to compute hash idx
+ * @hash_rnd: random value used for hash computations
+ * @entries: number of entries in the table
+ * @free_node: function to free nodes of the table
+ * @copy_node: fuction to copy nodes of the table
+ * @size_order: determines size of the table, there will be 2^size_order hash
+ * buckets
+ * @mean_chain_len: maximum average length for the hash buckets' list, if it is
+ * reached, the table will grow
+ */
+struct mesh_table {
+ /* Number of buckets will be 2^N */
+ struct hlist_head *hash_buckets;
+ spinlock_t *hashwlock; /* One per bucket, for add/del */
+ unsigned int hash_mask; /* (2^size_order) - 1 */
+ __u32 hash_rnd; /* Used for hash generation */
+ atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
+ void (*free_node) (struct hlist_node *p, bool free_leafs);
+ void (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
+ int size_order;
+ int mean_chain_len;
+};
+
+/* Recent multicast cache */
+/* RMC_BUCKETS must be a power of 2, maximum 256 */
+#define RMC_BUCKETS 256
+#define RMC_QUEUE_MAX_LEN 4
+#define RMC_TIMEOUT (3 * HZ)
+
+/**
+ * struct rmc_entry - entry in the Recent Multicast Cache
+ *
+ * @seqnum: mesh sequence number of the frame
+ * @exp_time: expiration time of the entry, in jiffies
+ * @sa: source address of the frame
+ *
+ * The Recent Multicast Cache keeps track of the latest multicast frames that
+ * have been received by a mesh interface and discards received multicast frames
+ * that are found in the cache.
+ */
+struct rmc_entry {
+ struct list_head list;
+ u32 seqnum;
+ unsigned long exp_time;
+ u8 sa[ETH_ALEN];
+};
+
+struct mesh_rmc {
+ struct rmc_entry bucket[RMC_BUCKETS];
+ u32 idx_mask;
+};
+
+
+/* Mesh IEs constants */
+#define MESH_CFG_LEN 19
+
+/*
+ * MESH_CFG_COMP_LEN Includes:
+ * - Active path selection protocol ID.
+ * - Active path selection metric ID.
+ * - Congestion control mode identifier.
+ * - Channel precedence.
+ * Does not include mesh capabilities, which may vary across nodes in the same
+ * mesh
+ */
+#define MESH_CFG_CMP_LEN 17
+
+/* Default values, timeouts in ms */
+#define MESH_TTL 5
+#define MESH_MAX_RETR 3
+#define MESH_RET_T 100
+#define MESH_CONF_T 100
+#define MESH_HOLD_T 100
+
+#define MESH_PATH_TIMEOUT 5000
+/* Minimum interval between two consecutive PREQs originated by the same
+ * interface
+ */
+#define MESH_PREQ_MIN_INT 10
+#define MESH_DIAM_TRAVERSAL_TIME 50
+/* Paths will be refreshed if they are closer than PATH_REFRESH_TIME to their
+ * expiration
+ */
+#define MESH_PATH_REFRESH_TIME 1000
+#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
+
+#define MESH_MAX_PREQ_RETRIES 4
+#define MESH_PATH_EXPIRE (600 * HZ)
+
+/* Default maximum number of established plinks per interface */
+#define MESH_MAX_ESTAB_PLINKS 32
+
+/* Default maximum number of plinks per interface */
+#define MESH_MAX_PLINKS 256
+
+/* Maximum number of paths per interface */
+#define MESH_MAX_MPATHS 1024
+
+/* Pending ANA approval */
+#define PLINK_CATEGORY 30
+#define MESH_PATH_SEL_CATEGORY 32
+
+/* Mesh Header Flags */
+#define IEEE80211S_FLAGS_AE 0x3
+
+/* Public interfaces */
+/* Various */
+u8 mesh_id_hash(u8 *mesh_id, int mesh_id_len);
+int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);
+int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
+ struct ieee80211_sub_if_data *sdata);
+int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
+ struct net_device *dev);
+bool mesh_matches_local(struct ieee802_11_elems *ie, struct net_device *dev);
+void mesh_ids_set_default(struct ieee80211_if_sta *sta);
+void mesh_mgmt_ies_add(struct sk_buff *skb, struct net_device *dev);
+void mesh_rmc_free(struct net_device *dev);
+int mesh_rmc_init(struct net_device *dev);
+void ieee80211s_init(void);
+void ieee80211s_stop(void);
+void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
+
+/* Mesh paths */
+int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb,
+ struct net_device *dev);
+void mesh_path_start_discovery(struct net_device *dev);
+struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev);
+struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev);
+void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
+void mesh_path_expire(struct net_device *dev);
+void mesh_path_flush(struct net_device *dev);
+void mesh_rx_path_sel_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
+ size_t len);
+int mesh_path_add(u8 *dst, struct net_device *dev);
+/* Mesh plinks */
+void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev,
+ bool add);
+bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie,
+ struct net_device *dev);
+void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
+void mesh_plink_broken(struct sta_info *sta);
+void mesh_plink_deactivate(struct sta_info *sta);
+int mesh_plink_open(struct sta_info *sta);
+int mesh_plink_close(struct sta_info *sta);
+void mesh_plink_block(struct sta_info *sta);
+void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
+ size_t len, struct ieee80211_rx_status *rx_status);
+
+/* Private interfaces */
+/* Mesh tables */
+struct mesh_table *mesh_table_alloc(int size_order);
+void mesh_table_free(struct mesh_table *tbl, bool free_leafs);
+struct mesh_table *mesh_table_grow(struct mesh_table *tbl);
+u32 mesh_table_hash(u8 *addr, struct net_device *dev, struct mesh_table *tbl);
+/* Mesh paths */
+int mesh_path_error_tx(u8 *dest, __le32 dest_dsn, u8 *ra,
+ struct net_device *dev);
+void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
+void mesh_path_flush_pending(struct mesh_path *mpath);
+void mesh_path_tx_pending(struct mesh_path *mpath);
+int mesh_pathtbl_init(void);
+void mesh_pathtbl_unregister(void);
+int mesh_path_del(u8 *addr, struct net_device *dev);
+void mesh_path_timer(unsigned long data);
+void mesh_path_flush_by_nexthop(struct sta_info *sta);
+void mesh_path_discard_frame(struct sk_buff *skb, struct net_device *dev);
+
+#ifdef CONFIG_MAC80211_MESH
+extern int mesh_allocated;
+
+static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
+{
+ return sdata->u.sta.mshcfg.dot11MeshMaxPeerLinks -
+ atomic_read(&sdata->u.sta.mshstats.estab_plinks);
+}
+
+static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
+{
+ return (min_t(long, mesh_plink_free_count(sdata),
+ MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
+}
+
+static inline void mesh_path_activate(struct mesh_path *mpath)
+{
+ mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
+}
+
+#define for_each_mesh_entry(x, p, node, i) \
+ for (i = 0; i <= x->hash_mask; i++) \
+ hlist_for_each_entry_rcu(node, p, &x->hash_buckets[i], list)
+
+#else
+#define mesh_allocated 0
+#endif
+
+#define MESH_PREQ(skb) (skb->cb + 30)
+
+#endif /* IEEE80211S_H */
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
new file mode 100644
index 0000000..af0cd1e
--- /dev/null
+++ b/net/mac80211/mesh_hwmp.c
@@ -0,0 +1,854 @@
+/*
+ * Copyright (c) 2008 open80211s Ltd.
+ * Author: Luis Carlos Cobo <luisca@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "mesh.h"
+
+#define TEST_FRAME_LEN 8192
+#define MAX_METRIC 0xffffffff
+#define ARITH_SHIFT 8
+
+/* Number of frames buffered per destination for unresolved destinations */
+#define MESH_FRAME_QUEUE_LEN 10
+#define MAX_PREQ_QUEUE_LEN 64
+
+/* Destination only */
+#define MP_F_DO 0x1
+/* Reply and forward */
+#define MP_F_RF 0x2
+
+static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
+{
+ if (ae)
+ offset += 6;
+ return le32_to_cpu(get_unaligned((__le32 *) (preq_elem + offset)));
+}
+
+/* HWMP IE processing macros */
+#define AE_F (1<<6)
+#define AE_F_SET(x) (*x & AE_F)
+#define PREQ_IE_FLAGS(x) (*(x))
+#define PREQ_IE_HOPCOUNT(x) (*(x + 1))
+#define PREQ_IE_TTL(x) (*(x + 2))
+#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0)
+#define PREQ_IE_ORIG_ADDR(x) (x + 7)
+#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0);
+#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x));
+#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x));
+#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26))
+#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27)
+#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x));
+
+
+#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x)
+#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x)
+#define PREP_IE_TTL(x) PREQ_IE_TTL(x)
+#define PREP_IE_ORIG_ADDR(x) (x + 3)
+#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0);
+#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x));
+#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x));
+#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
+#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x));
+
+#define PERR_IE_DST_ADDR(x) (x + 2)
+#define PERR_IE_DST_DSN(x) u32_field_get(x, 8, 0);
+
+#define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000))
+#define MSEC_TO_TU(x) (x*1000/1024)
+#define DSN_GT(x, y) ((long) (y) - (long) (x) < 0)
+#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0)
+
+#define net_traversal_jiffies(s) \
+ msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
+#define default_lifetime(s) \
+ MSEC_TO_TU(s->u.sta.mshcfg.dot11MeshHWMPactivePathTimeout)
+#define min_preq_int_jiff(s) \
+ (msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPpreqMinInterval))
+#define max_preq_retries(s) (s->u.sta.mshcfg.dot11MeshHWMPmaxPREQretries)
+#define disc_timeout_jiff(s) \
+ msecs_to_jiffies(sdata->u.sta.mshcfg.min_discovery_timeout)
+
+enum mpath_frame_type {
+ MPATH_PREQ = 0,
+ MPATH_PREP,
+ MPATH_PERR
+};
+
+static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
+ u8 *orig_addr, __le32 orig_dsn, u8 dst_flags, u8 *dst,
+ __le32 dst_dsn, u8 *da, u8 hop_count, u8 ttl, __le32 lifetime,
+ __le32 metric, __le32 preq_id, struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos;
+ int ie_len;
+
+ if (!skb)
+ return -1;
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ /* 25 is the size of the common mgmt part (24) plus the size of the
+ * common action part (1)
+ */
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 25 + sizeof(mgmt->u.action.u.mesh_action));
+ memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.mesh_action));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ /* BSSID is left zeroed, wildcard value */
+ mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
+ mgmt->u.action.u.mesh_action.action_code = action;
+
+ switch (action) {
+ case MPATH_PREQ:
+ ie_len = 37;
+ pos = skb_put(skb, 2 + ie_len);
+ *pos++ = WLAN_EID_PREQ;
+ break;
+ case MPATH_PREP:
+ ie_len = 31;
+ pos = skb_put(skb, 2 + ie_len);
+ *pos++ = WLAN_EID_PREP;
+ break;
+ default:
+ kfree_skb(skb);
+ return -ENOTSUPP;
+ break;
+ }
+ *pos++ = ie_len;
+ *pos++ = flags;
+ *pos++ = hop_count;
+ *pos++ = ttl;
+ if (action == MPATH_PREQ) {
+ memcpy(pos, &preq_id, 4);
+ pos += 4;
+ }
+ memcpy(pos, orig_addr, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &orig_dsn, 4);
+ pos += 4;
+ memcpy(pos, &lifetime, 4);
+ pos += 4;
+ memcpy(pos, &metric, 4);
+ pos += 4;
+ if (action == MPATH_PREQ) {
+ /* destination count */
+ *pos++ = 1;
+ *pos++ = dst_flags;
+ }
+ memcpy(pos, dst, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &dst_dsn, 4);
+
+ ieee80211_sta_tx(dev, skb, 0);
+ return 0;
+}
+
+/**
+ * mesh_send_path error - Sends a PERR mesh management frame
+ *
+ * @dst: broken destination
+ * @dst_dsn: dsn of the broken destination
+ * @ra: node this frame is addressed to
+ */
+int mesh_path_error_tx(u8 *dst, __le32 dst_dsn, u8 *ra,
+ struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos;
+ int ie_len;
+
+ if (!skb)
+ return -1;
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ /* 25 is the size of the common mgmt part (24) plus the size of the
+ * common action part (1)
+ */
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 25 + sizeof(mgmt->u.action.u.mesh_action));
+ memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.mesh_action));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ memcpy(mgmt->da, ra, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ /* BSSID is left zeroed, wildcard value */
+ mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
+ mgmt->u.action.u.mesh_action.action_code = MPATH_PERR;
+ ie_len = 12;
+ pos = skb_put(skb, 2 + ie_len);
+ *pos++ = WLAN_EID_PERR;
+ *pos++ = ie_len;
+ /* mode flags, reserved */
+ *pos++ = 0;
+ /* number of destinations */
+ *pos++ = 1;
+ memcpy(pos, dst, ETH_ALEN);
+ pos += ETH_ALEN;
+ memcpy(pos, &dst_dsn, 4);
+
+ ieee80211_sta_tx(dev, skb, 0);
+ return 0;
+}
+
+static u32 airtime_link_metric_get(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ struct ieee80211_supported_band *sband;
+ /* This should be adjusted for each device */
+ int device_constant = 1 << ARITH_SHIFT;
+ int test_frame_len = TEST_FRAME_LEN << ARITH_SHIFT;
+ int s_unit = 1 << ARITH_SHIFT;
+ int rate, err;
+ u32 tx_time, estimated_retx;
+ u64 result;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ if (sta->fail_avg >= 100)
+ return MAX_METRIC;
+ err = (sta->fail_avg << ARITH_SHIFT) / 100;
+
+ /* bitrate is in units of 100 Kbps, while we need rate in units of
+ * 1Mbps. This will be corrected on tx_time computation.
+ */
+ rate = sband->bitrates[sta->txrate_idx].bitrate;
+ tx_time = (device_constant + 10 * test_frame_len / rate);
+ estimated_retx = ((1 << (2 * ARITH_SHIFT)) / (s_unit - err));
+ result = (tx_time * estimated_retx) >> (2 * ARITH_SHIFT) ;
+ return (u32)result;
+}
+
+/**
+ * hwmp_route_info_get - Update routing info to originator and transmitter
+ *
+ * @dev: local mesh interface
+ * @mgmt: mesh management frame
+ * @hwmp_ie: hwmp information element (PREP or PREQ)
+ *
+ * This function updates the path routing information to the originator and the
+ * transmitter of a HWMP PREQ or PREP fram.
+ *
+ * Returns: metric to frame originator or 0 if the frame should not be further
+ * processed
+ *
+ * Notes: this function is the only place (besides user-provided info) where
+ * path routing information is updated.
+ */
+static u32 hwmp_route_info_get(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ u8 *hwmp_ie)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct mesh_path *mpath;
+ struct sta_info *sta;
+ bool fresh_info;
+ u8 *orig_addr, *ta;
+ u32 orig_dsn, orig_metric;
+ unsigned long orig_lifetime, exp_time;
+ u32 last_hop_metric, new_metric;
+ bool process = true;
+ u8 action = mgmt->u.action.u.mesh_action.action_code;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return 0;
+ }
+
+ last_hop_metric = airtime_link_metric_get(local, sta);
+ /* Update and check originator routing info */
+ fresh_info = true;
+
+ switch (action) {
+ case MPATH_PREQ:
+ orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie);
+ orig_dsn = PREQ_IE_ORIG_DSN(hwmp_ie);
+ orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie);
+ orig_metric = PREQ_IE_METRIC(hwmp_ie);
+ break;
+ case MPATH_PREP:
+ /* Originator here refers to the MP that was the destination in
+ * the Path Request. The draft refers to that MP as the
+ * destination address, even though usually it is the origin of
+ * the PREP frame. We divert from the nomenclature in the draft
+ * so that we can easily use a single function to gather path
+ * information from both PREQ and PREP frames.
+ */
+ orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie);
+ orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie);
+ orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
+ orig_metric = PREP_IE_METRIC(hwmp_ie);
+ break;
+ default:
+ rcu_read_unlock();
+ return 0;
+ }
+ new_metric = orig_metric + last_hop_metric;
+ if (new_metric < orig_metric)
+ new_metric = MAX_METRIC;
+ exp_time = TU_TO_EXP_TIME(orig_lifetime);
+
+ if (memcmp(orig_addr, dev->dev_addr, ETH_ALEN) == 0) {
+ /* This MP is the originator, we are not interested in this
+ * frame, except for updating transmitter's path info.
+ */
+ process = false;
+ fresh_info = false;
+ } else {
+ mpath = mesh_path_lookup(orig_addr, dev);
+ if (mpath) {
+ spin_lock_bh(&mpath->state_lock);
+ if (mpath->flags & MESH_PATH_FIXED)
+ fresh_info = false;
+ else if ((mpath->flags & MESH_PATH_ACTIVE) &&
+ (mpath->flags & MESH_PATH_DSN_VALID)) {
+ if (DSN_GT(mpath->dsn, orig_dsn) ||
+ (mpath->dsn == orig_dsn &&
+ action == MPATH_PREQ &&
+ new_metric > mpath->metric)) {
+ process = false;
+ fresh_info = false;
+ }
+ }
+ } else {
+ mesh_path_add(orig_addr, dev);
+ mpath = mesh_path_lookup(orig_addr, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return 0;
+ }
+ spin_lock_bh(&mpath->state_lock);
+ }
+
+ if (fresh_info) {
+ mesh_path_assign_nexthop(mpath, sta);
+ mpath->flags |= MESH_PATH_DSN_VALID;
+ mpath->metric = new_metric;
+ mpath->dsn = orig_dsn;
+ mpath->exp_time = time_after(mpath->exp_time, exp_time)
+ ? mpath->exp_time : exp_time;
+ mesh_path_activate(mpath);
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_tx_pending(mpath);
+ /* draft says preq_id should be saved to, but there does
+ * not seem to be any use for it, skipping by now
+ */
+ } else
+ spin_unlock_bh(&mpath->state_lock);
+ }
+
+ /* Update and check transmitter routing info */
+ ta = mgmt->sa;
+ if (memcmp(orig_addr, ta, ETH_ALEN) == 0)
+ fresh_info = false;
+ else {
+ fresh_info = true;
+
+ mpath = mesh_path_lookup(ta, dev);
+ if (mpath) {
+ spin_lock_bh(&mpath->state_lock);
+ if ((mpath->flags & MESH_PATH_FIXED) ||
+ ((mpath->flags & MESH_PATH_ACTIVE) &&
+ (last_hop_metric > mpath->metric)))
+ fresh_info = false;
+ } else {
+ mesh_path_add(ta, dev);
+ mpath = mesh_path_lookup(ta, dev);
+ if (!mpath) {
+ rcu_read_unlock();
+ return 0;
+ }
+ spin_lock_bh(&mpath->state_lock);
+ }
+
+ if (fresh_info) {
+ mesh_path_assign_nexthop(mpath, sta);
+ mpath->flags &= ~MESH_PATH_DSN_VALID;
+ mpath->metric = last_hop_metric;
+ mpath->exp_time = time_after(mpath->exp_time, exp_time)
+ ? mpath->exp_time : exp_time;
+ mesh_path_activate(mpath);
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_tx_pending(mpath);
+ } else
+ spin_unlock_bh(&mpath->state_lock);
+ }
+
+ rcu_read_unlock();
+
+ return process ? new_metric : 0;
+}
+
+static void hwmp_preq_frame_process(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ u8 *preq_elem, u32 metric) {
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct mesh_path *mpath;
+ u8 *dst_addr, *orig_addr;
+ u8 dst_flags, ttl;
+ u32 orig_dsn, dst_dsn, lifetime;
+ bool reply = false;
+ bool forward = true;
+
+ /* Update destination DSN, if present */
+ dst_addr = PREQ_IE_DST_ADDR(preq_elem);
+ orig_addr = PREQ_IE_ORIG_ADDR(preq_elem);
+ dst_dsn = PREQ_IE_DST_DSN(preq_elem);
+ orig_dsn = PREQ_IE_ORIG_DSN(preq_elem);
+ dst_flags = PREQ_IE_DST_F(preq_elem);
+
+ if (memcmp(dst_addr, dev->dev_addr, ETH_ALEN) == 0) {
+ forward = false;
+ reply = true;
+ metric = 0;
+ if (time_after(jiffies, ifsta->last_dsn_update +
+ net_traversal_jiffies(sdata)) ||
+ time_before(jiffies, ifsta->last_dsn_update)) {
+ dst_dsn = ++ifsta->dsn;
+ ifsta->last_dsn_update = jiffies;
+ }
+ } else {
+ rcu_read_lock();
+ mpath = mesh_path_lookup(dst_addr, dev);
+ if (mpath) {
+ if ((!(mpath->flags & MESH_PATH_DSN_VALID)) ||
+ DSN_LT(mpath->dsn, dst_dsn)) {
+ mpath->dsn = dst_dsn;
+ mpath->flags &= MESH_PATH_DSN_VALID;
+ } else if ((!(dst_flags & MP_F_DO)) &&
+ (mpath->flags & MESH_PATH_ACTIVE)) {
+ reply = true;
+ metric = mpath->metric;
+ dst_dsn = mpath->dsn;
+ if (dst_flags & MP_F_RF)
+ dst_flags |= MP_F_DO;
+ else
+ forward = false;
+ }
+ }
+ rcu_read_unlock();
+ }
+
+ if (reply) {
+ lifetime = PREQ_IE_LIFETIME(preq_elem);
+ ttl = ifsta->mshcfg.dot11MeshTTL;
+ if (ttl != 0)
+ mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr,
+ cpu_to_le32(dst_dsn), 0, orig_addr,
+ cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl,
+ cpu_to_le32(lifetime), cpu_to_le32(metric),
+ 0, dev);
+ else
+ ifsta->mshstats.dropped_frames_ttl++;
+ }
+
+ if (forward) {
+ u32 preq_id;
+ u8 hopcount, flags;
+
+ ttl = PREQ_IE_TTL(preq_elem);
+ lifetime = PREQ_IE_LIFETIME(preq_elem);
+ if (ttl <= 1) {
+ ifsta->mshstats.dropped_frames_ttl++;
+ return;
+ }
+ --ttl;
+ flags = PREQ_IE_FLAGS(preq_elem);
+ preq_id = PREQ_IE_PREQ_ID(preq_elem);
+ hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1;
+ mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr,
+ cpu_to_le32(orig_dsn), dst_flags, dst_addr,
+ cpu_to_le32(dst_dsn), dev->broadcast,
+ hopcount, ttl, cpu_to_le32(lifetime),
+ cpu_to_le32(metric), cpu_to_le32(preq_id),
+ dev);
+ ifsta->mshstats.fwded_frames++;
+ }
+}
+
+
+static void hwmp_prep_frame_process(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ u8 *prep_elem, u32 metric)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+ u8 *dst_addr, *orig_addr;
+ u8 ttl, hopcount, flags;
+ u8 next_hop[ETH_ALEN];
+ u32 dst_dsn, orig_dsn, lifetime;
+
+ /* Note that we divert from the draft nomenclature and denominate
+ * destination to what the draft refers to as origininator. So in this
+ * function destnation refers to the final destination of the PREP,
+ * which corresponds with the originator of the PREQ which this PREP
+ * replies
+ */
+ dst_addr = PREP_IE_DST_ADDR(prep_elem);
+ if (memcmp(dst_addr, dev->dev_addr, ETH_ALEN) == 0)
+ /* destination, no forwarding required */
+ return;
+
+ ttl = PREP_IE_TTL(prep_elem);
+ if (ttl <= 1) {
+ sdata->u.sta.mshstats.dropped_frames_ttl++;
+ return;
+ }
+
+ rcu_read_lock();
+ mpath = mesh_path_lookup(dst_addr, dev);
+ if (mpath)
+ spin_lock_bh(&mpath->state_lock);
+ else
+ goto fail;
+ if (!(mpath->flags & MESH_PATH_ACTIVE)) {
+ spin_unlock_bh(&mpath->state_lock);
+ goto fail;
+ }
+ memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
+ spin_unlock_bh(&mpath->state_lock);
+ --ttl;
+ flags = PREP_IE_FLAGS(prep_elem);
+ lifetime = PREP_IE_LIFETIME(prep_elem);
+ hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1;
+ orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
+ dst_dsn = PREP_IE_DST_DSN(prep_elem);
+ orig_dsn = PREP_IE_ORIG_DSN(prep_elem);
+
+ mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr,
+ cpu_to_le32(orig_dsn), 0, dst_addr,
+ cpu_to_le32(dst_dsn), mpath->next_hop->addr, hopcount, ttl,
+ cpu_to_le32(lifetime), cpu_to_le32(metric),
+ 0, dev);
+ rcu_read_unlock();
+ sdata->u.sta.mshstats.fwded_frames++;
+ return;
+
+fail:
+ rcu_read_unlock();
+ sdata->u.sta.mshstats.dropped_frames_no_route++;
+ return;
+}
+
+static void hwmp_perr_frame_process(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt, u8 *perr_elem)
+{
+ struct mesh_path *mpath;
+ u8 *ta, *dst_addr;
+ u32 dst_dsn;
+
+ ta = mgmt->sa;
+ dst_addr = PERR_IE_DST_ADDR(perr_elem);
+ dst_dsn = PERR_IE_DST_DSN(perr_elem);
+ rcu_read_lock();
+ mpath = mesh_path_lookup(dst_addr, dev);
+ if (mpath) {
+ spin_lock_bh(&mpath->state_lock);
+ if (mpath->flags & MESH_PATH_ACTIVE &&
+ memcmp(ta, mpath->next_hop->addr, ETH_ALEN) == 0 &&
+ (!(mpath->flags & MESH_PATH_DSN_VALID) ||
+ DSN_GT(dst_dsn, mpath->dsn))) {
+ mpath->flags &= ~MESH_PATH_ACTIVE;
+ mpath->dsn = dst_dsn;
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_error_tx(dst_addr, cpu_to_le32(dst_dsn),
+ dev->broadcast, dev);
+ } else
+ spin_unlock_bh(&mpath->state_lock);
+ }
+ rcu_read_unlock();
+}
+
+
+
+void mesh_rx_path_sel_frame(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee802_11_elems elems;
+ size_t baselen;
+ u32 last_hop_metric;
+
+ baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
+ ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
+ len - baselen, &elems);
+
+ switch (mgmt->u.action.u.mesh_action.action_code) {
+ case MPATH_PREQ:
+ if (!elems.preq || elems.preq_len != 37)
+ /* Right now we support just 1 destination and no AE */
+ return;
+ last_hop_metric = hwmp_route_info_get(dev, mgmt, elems.preq);
+ if (!last_hop_metric)
+ return;
+ hwmp_preq_frame_process(dev, mgmt, elems.preq, last_hop_metric);
+ break;
+ case MPATH_PREP:
+ if (!elems.prep || elems.prep_len != 31)
+ /* Right now we support no AE */
+ return;
+ last_hop_metric = hwmp_route_info_get(dev, mgmt, elems.prep);
+ if (!last_hop_metric)
+ return;
+ hwmp_prep_frame_process(dev, mgmt, elems.prep, last_hop_metric);
+ break;
+ case MPATH_PERR:
+ if (!elems.perr || elems.perr_len != 12)
+ /* Right now we support only one destination per PERR */
+ return;
+ hwmp_perr_frame_process(dev, mgmt, elems.perr);
+ default:
+ return;
+ }
+
+}
+
+/**
+ * mesh_queue_preq - queue a PREQ to a given destination
+ *
+ * @mpath: mesh path to discover
+ * @flags: special attributes of the PREQ to be sent
+ *
+ * Locking: the function must be called from within a rcu read lock block.
+ *
+ */
+static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
+{
+ struct ieee80211_sub_if_data *sdata =
+ IEEE80211_DEV_TO_SUB_IF(mpath->dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct mesh_preq_queue *preq_node;
+
+ preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_KERNEL);
+ if (!preq_node) {
+ printk(KERN_DEBUG "Mesh HWMP: could not allocate PREQ node\n");
+ return;
+ }
+
+ spin_lock(&ifsta->mesh_preq_queue_lock);
+ if (ifsta->preq_queue_len == MAX_PREQ_QUEUE_LEN) {
+ spin_unlock(&ifsta->mesh_preq_queue_lock);
+ kfree(preq_node);
+ if (printk_ratelimit())
+ printk(KERN_DEBUG "Mesh HWMP: PREQ node queue full\n");
+ return;
+ }
+
+ memcpy(preq_node->dst, mpath->dst, ETH_ALEN);
+ preq_node->flags = flags;
+
+ list_add_tail(&preq_node->list, &ifsta->preq_queue.list);
+ ++ifsta->preq_queue_len;
+ spin_unlock(&ifsta->mesh_preq_queue_lock);
+
+ if (time_after(jiffies, ifsta->last_preq + min_preq_int_jiff(sdata)))
+ queue_work(sdata->local->hw.workqueue, &ifsta->work);
+
+ else if (time_before(jiffies, ifsta->last_preq)) {
+ /* avoid long wait if did not send preqs for a long time
+ * and jiffies wrapped around
+ */
+ ifsta->last_preq = jiffies - min_preq_int_jiff(sdata) - 1;
+ queue_work(sdata->local->hw.workqueue, &ifsta->work);
+ } else
+ mod_timer(&ifsta->mesh_path_timer, ifsta->last_preq +
+ min_preq_int_jiff(sdata));
+}
+
+/**
+ * mesh_path_start_discovery - launch a path discovery from the PREQ queue
+ *
+ * @dev: local mesh interface
+ */
+void mesh_path_start_discovery(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata =
+ IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct mesh_preq_queue *preq_node;
+ struct mesh_path *mpath;
+ u8 ttl, dst_flags;
+ u32 lifetime;
+
+ spin_lock(&ifsta->mesh_preq_queue_lock);
+ if (!ifsta->preq_queue_len ||
+ time_before(jiffies, ifsta->last_preq +
+ min_preq_int_jiff(sdata))) {
+ spin_unlock(&ifsta->mesh_preq_queue_lock);
+ return;
+ }
+
+ preq_node = list_first_entry(&ifsta->preq_queue.list,
+ struct mesh_preq_queue, list);
+ list_del(&preq_node->list);
+ --ifsta->preq_queue_len;
+ spin_unlock(&ifsta->mesh_preq_queue_lock);
+
+ rcu_read_lock();
+ mpath = mesh_path_lookup(preq_node->dst, dev);
+ if (!mpath)
+ goto enddiscovery;
+
+ spin_lock_bh(&mpath->state_lock);
+ if (preq_node->flags & PREQ_Q_F_START) {
+ if (mpath->flags & MESH_PATH_RESOLVING) {
+ spin_unlock_bh(&mpath->state_lock);
+ goto enddiscovery;
+ } else {
+ mpath->flags &= ~MESH_PATH_RESOLVED;
+ mpath->flags |= MESH_PATH_RESOLVING;
+ mpath->discovery_retries = 0;
+ mpath->discovery_timeout = disc_timeout_jiff(sdata);
+ }
+ } else if (!(mpath->flags & MESH_PATH_RESOLVING) ||
+ mpath->flags & MESH_PATH_RESOLVED) {
+ mpath->flags &= ~MESH_PATH_RESOLVING;
+ spin_unlock_bh(&mpath->state_lock);
+ goto enddiscovery;
+ }
+
+ ifsta->last_preq = jiffies;
+
+ if (time_after(jiffies, ifsta->last_dsn_update +
+ net_traversal_jiffies(sdata)) ||
+ time_before(jiffies, ifsta->last_dsn_update)) {
+ ++ifsta->dsn;
+ sdata->u.sta.last_dsn_update = jiffies;
+ }
+ lifetime = default_lifetime(sdata);
+ ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
+ if (ttl == 0) {
+ sdata->u.sta.mshstats.dropped_frames_ttl++;
+ spin_unlock_bh(&mpath->state_lock);
+ goto enddiscovery;
+ }
+
+ if (preq_node->flags & PREQ_Q_F_REFRESH)
+ dst_flags = MP_F_DO;
+ else
+ dst_flags = MP_F_RF;
+
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_sel_frame_tx(MPATH_PREQ, 0, dev->dev_addr,
+ cpu_to_le32(ifsta->dsn), dst_flags, mpath->dst,
+ cpu_to_le32(mpath->dsn), dev->broadcast, 0,
+ ttl, cpu_to_le32(lifetime), 0,
+ cpu_to_le32(ifsta->preq_id++), dev);
+ mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
+
+enddiscovery:
+ rcu_read_unlock();
+ kfree(preq_node);
+}
+
+/**
+ * ieee80211s_lookup_nexthop - put the appropriate next hop on a mesh frame
+ *
+ * @next_hop: output argument for next hop address
+ * @skb: frame to be sent
+ * @dev: network device the frame will be sent through
+ *
+ * Returns: 0 if the next hop was found. Nonzero otherwise. If no next hop is
+ * found, the function will start a path discovery and queue the frame so it is
+ * sent when the path is resolved. This means the caller must not free the skb
+ * in this case.
+ */
+int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb_to_free = NULL;
+ struct mesh_path *mpath;
+ int err = 0;
+
+ rcu_read_lock();
+ mpath = mesh_path_lookup(skb->data, dev);
+
+ if (!mpath) {
+ mesh_path_add(skb->data, dev);
+ mpath = mesh_path_lookup(skb->data, dev);
+ if (!mpath) {
+ dev_kfree_skb(skb);
+ sdata->u.sta.mshstats.dropped_frames_no_route++;
+ err = -ENOSPC;
+ goto endlookup;
+ }
+ }
+
+ if (mpath->flags & MESH_PATH_ACTIVE) {
+ if (time_after(jiffies, mpath->exp_time -
+ msecs_to_jiffies(sdata->u.sta.mshcfg.path_refresh_time))
+ && skb->pkt_type != PACKET_OTHERHOST
+ && !(mpath->flags & MESH_PATH_RESOLVING)
+ && !(mpath->flags & MESH_PATH_FIXED)) {
+ mesh_queue_preq(mpath,
+ PREQ_Q_F_START | PREQ_Q_F_REFRESH);
+ }
+ memcpy(next_hop, mpath->next_hop->addr,
+ ETH_ALEN);
+ } else {
+ if (!(mpath->flags & MESH_PATH_RESOLVING)) {
+ /* Start discovery only if it is not running yet */
+ mesh_queue_preq(mpath, PREQ_Q_F_START);
+ }
+
+ if (skb_queue_len(&mpath->frame_queue) >=
+ MESH_FRAME_QUEUE_LEN) {
+ skb_to_free = mpath->frame_queue.next;
+ skb_unlink(skb_to_free, &mpath->frame_queue);
+ }
+
+ skb_queue_tail(&mpath->frame_queue, skb);
+ if (skb_to_free)
+ mesh_path_discard_frame(skb_to_free, dev);
+ err = -ENOENT;
+ }
+
+endlookup:
+ rcu_read_unlock();
+ return err;
+}
+
+void mesh_path_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct mesh_path *mpath;
+
+ rcu_read_lock();
+ mpath = (struct mesh_path *) data;
+ mpath = rcu_dereference(mpath);
+ if (!mpath)
+ goto endmpathtimer;
+ spin_lock_bh(&mpath->state_lock);
+ sdata = IEEE80211_DEV_TO_SUB_IF(mpath->dev);
+ if (mpath->flags & MESH_PATH_RESOLVED ||
+ (!(mpath->flags & MESH_PATH_RESOLVING)))
+ mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED);
+ else if (mpath->discovery_retries < max_preq_retries(sdata)) {
+ ++mpath->discovery_retries;
+ mpath->discovery_timeout *= 2;
+ mesh_queue_preq(mpath, 0);
+ } else {
+ mpath->flags = 0;
+ mpath->exp_time = jiffies;
+ mesh_path_flush_pending(mpath);
+ }
+
+ spin_unlock_bh(&mpath->state_lock);
+endmpathtimer:
+ rcu_read_unlock();
+}
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
new file mode 100644
index 0000000..99c2d36
--- /dev/null
+++ b/net/mac80211/mesh_pathtbl.c
@@ -0,0 +1,523 @@
+/*
+ * Copyright (c) 2008 open80211s Ltd.
+ * Author: Luis Carlos Cobo <luisca@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/random.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "mesh.h"
+
+/* There will be initially 2^INIT_PATHS_SIZE_ORDER buckets */
+#define INIT_PATHS_SIZE_ORDER 2
+
+/* Keep the mean chain length below this constant */
+#define MEAN_CHAIN_LEN 2
+
+#define MPATH_EXPIRED(mpath) ((mpath->flags & MESH_PATH_ACTIVE) && \
+ time_after(jiffies, mpath->exp_time) && \
+ !(mpath->flags & MESH_PATH_FIXED))
+
+struct mpath_node {
+ struct hlist_node list;
+ struct rcu_head rcu;
+ /* This indirection allows two different tables to point to the same
+ * mesh_path structure, useful when resizing
+ */
+ struct mesh_path *mpath;
+};
+
+static struct mesh_table *mesh_paths;
+
+/* This lock will have the grow table function as writer and add / delete nodes
+ * as readers. When reading the table (i.e. doing lookups) we are well protected
+ * by RCU
+ */
+static DEFINE_RWLOCK(pathtbl_resize_lock);
+
+/**
+ *
+ * mesh_path_assign_nexthop - update mesh path next hop
+ *
+ * @mpath: mesh path to update
+ * @sta: next hop to assign
+ *
+ * Locking: mpath->state_lock must be held when calling this function
+ */
+void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
+{
+ rcu_assign_pointer(mpath->next_hop, sta);
+}
+
+
+/**
+ * mesh_path_lookup - look up a path in the mesh path table
+ * @dst: hardware address (ETH_ALEN length) of destination
+ * @dev: local interface
+ *
+ * Returns: pointer to the mesh path structure, or NULL if not found
+ *
+ * Locking: must be called within a read rcu section.
+ */
+struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev)
+{
+ struct mesh_path *mpath;
+ struct hlist_node *n;
+ struct hlist_head *bucket;
+ struct mesh_table *tbl;
+ struct mpath_node *node;
+
+ tbl = rcu_dereference(mesh_paths);
+
+ bucket = &tbl->hash_buckets[mesh_table_hash(dst, dev, tbl)];
+ hlist_for_each_entry_rcu(node, n, bucket, list) {
+ mpath = node->mpath;
+ if (mpath->dev == dev &&
+ memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
+ if (MPATH_EXPIRED(mpath)) {
+ spin_lock_bh(&mpath->state_lock);
+ if (MPATH_EXPIRED(mpath))
+ mpath->flags &= ~MESH_PATH_ACTIVE;
+ spin_unlock_bh(&mpath->state_lock);
+ }
+ return mpath;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * mesh_path_lookup_by_idx - look up a path in the mesh path table by its index
+ * @idx: index
+ * @dev: local interface, or NULL for all entries
+ *
+ * Returns: pointer to the mesh path structure, or NULL if not found.
+ *
+ * Locking: must be called within a read rcu section.
+ */
+struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev)
+{
+ struct mpath_node *node;
+ struct hlist_node *p;
+ int i;
+ int j = 0;
+
+ for_each_mesh_entry(mesh_paths, p, node, i) {
+ if (dev && node->mpath->dev != dev)
+ continue;
+ if (j++ == idx) {
+ if (MPATH_EXPIRED(node->mpath)) {
+ spin_lock_bh(&node->mpath->state_lock);
+ if (MPATH_EXPIRED(node->mpath))
+ node->mpath->flags &= ~MESH_PATH_ACTIVE;
+ spin_unlock_bh(&node->mpath->state_lock);
+ }
+ return node->mpath;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * mesh_path_add - allocate and add a new path to the mesh path table
+ * @addr: destination address of the path (ETH_ALEN length)
+ * @dev: local interface
+ *
+ * Returns: 0 on sucess
+ *
+ * State: the initial state of the new path is set to 0
+ */
+int mesh_path_add(u8 *dst, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath, *new_mpath;
+ struct mpath_node *node, *new_node;
+ struct hlist_head *bucket;
+ struct hlist_node *n;
+ int grow = 0;
+ int err = 0;
+ u32 hash_idx;
+
+ if (memcmp(dst, dev->dev_addr, ETH_ALEN) == 0)
+ /* never add ourselves as neighbours */
+ return -ENOTSUPP;
+
+ if (is_multicast_ether_addr(dst))
+ return -ENOTSUPP;
+
+ if (atomic_add_unless(&sdata->u.sta.mpaths, 1, MESH_MAX_MPATHS) == 0)
+ return -ENOSPC;
+
+ new_mpath = kzalloc(sizeof(struct mesh_path), GFP_KERNEL);
+ if (!new_mpath) {
+ atomic_dec(&sdata->u.sta.mpaths);
+ err = -ENOMEM;
+ goto endadd2;
+ }
+ new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL);
+ if (!new_node) {
+ kfree(new_mpath);
+ atomic_dec(&sdata->u.sta.mpaths);
+ err = -ENOMEM;
+ goto endadd2;
+ }
+
+ read_lock(&pathtbl_resize_lock);
+ memcpy(new_mpath->dst, dst, ETH_ALEN);
+ new_mpath->dev = dev;
+ new_mpath->flags = 0;
+ skb_queue_head_init(&new_mpath->frame_queue);
+ new_node->mpath = new_mpath;
+ new_mpath->timer.data = (unsigned long) new_mpath;
+ new_mpath->timer.function = mesh_path_timer;
+ new_mpath->exp_time = jiffies;
+ spin_lock_init(&new_mpath->state_lock);
+ init_timer(&new_mpath->timer);
+
+ hash_idx = mesh_table_hash(dst, dev, mesh_paths);
+ bucket = &mesh_paths->hash_buckets[hash_idx];
+
+ spin_lock(&mesh_paths->hashwlock[hash_idx]);
+
+ hlist_for_each_entry(node, n, bucket, list) {
+ mpath = node->mpath;
+ if (mpath->dev == dev && memcmp(dst, mpath->dst, ETH_ALEN)
+ == 0) {
+ err = -EEXIST;
+ atomic_dec(&sdata->u.sta.mpaths);
+ kfree(new_node);
+ kfree(new_mpath);
+ goto endadd;
+ }
+ }
+
+ hlist_add_head_rcu(&new_node->list, bucket);
+ if (atomic_inc_return(&mesh_paths->entries) >=
+ mesh_paths->mean_chain_len * (mesh_paths->hash_mask + 1))
+ grow = 1;
+
+endadd:
+ spin_unlock(&mesh_paths->hashwlock[hash_idx]);
+ read_unlock(&pathtbl_resize_lock);
+ if (!err && grow) {
+ struct mesh_table *oldtbl, *newtbl;
+
+ write_lock(&pathtbl_resize_lock);
+ oldtbl = mesh_paths;
+ newtbl = mesh_table_grow(mesh_paths);
+ if (!newtbl) {
+ write_unlock(&pathtbl_resize_lock);
+ return -ENOMEM;
+ }
+ rcu_assign_pointer(mesh_paths, newtbl);
+ write_unlock(&pathtbl_resize_lock);
+
+ synchronize_rcu();
+ mesh_table_free(oldtbl, false);
+ }
+endadd2:
+ return err;
+}
+
+
+/**
+ * mesh_plink_broken - deactivates paths and sends perr when a link breaks
+ *
+ * @sta: broken peer link
+ *
+ * This function must be called from the rate control algorithm if enough
+ * delivery errors suggest that a peer link is no longer usable.
+ */
+void mesh_plink_broken(struct sta_info *sta)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node;
+ struct hlist_node *p;
+ struct net_device *dev = sta->sdata->dev;
+ int i;
+
+ rcu_read_lock();
+ for_each_mesh_entry(mesh_paths, p, node, i) {
+ mpath = node->mpath;
+ spin_lock_bh(&mpath->state_lock);
+ if (mpath->next_hop == sta &&
+ mpath->flags & MESH_PATH_ACTIVE &&
+ !(mpath->flags & MESH_PATH_FIXED)) {
+ mpath->flags &= ~MESH_PATH_ACTIVE;
+ ++mpath->dsn;
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_error_tx(mpath->dst,
+ cpu_to_le32(mpath->dsn),
+ dev->broadcast, dev);
+ } else
+ spin_unlock_bh(&mpath->state_lock);
+ }
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(mesh_plink_broken);
+
+/**
+ * mesh_path_flush_by_nexthop - Deletes mesh paths if their next hop matches
+ *
+ * @sta - mesh peer to match
+ *
+ * RCU notes: this function is called when a mesh plink transitions from
+ * PLINK_ESTAB to any other state, since PLINK_ESTAB state is the only one that
+ * allows path creation. This will happen before the sta can be freed (because
+ * sta_info_destroy() calls this) so any reader in a rcu read block will be
+ * protected against the plink disappearing.
+ */
+void mesh_path_flush_by_nexthop(struct sta_info *sta)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node;
+ struct hlist_node *p;
+ int i;
+
+ for_each_mesh_entry(mesh_paths, p, node, i) {
+ mpath = node->mpath;
+ if (mpath->next_hop == sta)
+ mesh_path_del(mpath->dst, mpath->dev);
+ }
+}
+
+void mesh_path_flush(struct net_device *dev)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node;
+ struct hlist_node *p;
+ int i;
+
+ for_each_mesh_entry(mesh_paths, p, node, i) {
+ mpath = node->mpath;
+ if (mpath->dev == dev)
+ mesh_path_del(mpath->dst, mpath->dev);
+ }
+}
+
+static void mesh_path_node_reclaim(struct rcu_head *rp)
+{
+ struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
+ struct ieee80211_sub_if_data *sdata =
+ IEEE80211_DEV_TO_SUB_IF(node->mpath->dev);
+
+ del_timer_sync(&node->mpath->timer);
+ atomic_dec(&sdata->u.sta.mpaths);
+ kfree(node->mpath);
+ kfree(node);
+}
+
+/**
+ * mesh_path_del - delete a mesh path from the table
+ *
+ * @addr: dst address (ETH_ALEN length)
+ * @dev: local interface
+ *
+ * Returns: 0 if succesful
+ */
+int mesh_path_del(u8 *addr, struct net_device *dev)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node;
+ struct hlist_head *bucket;
+ struct hlist_node *n;
+ int hash_idx;
+ int err = 0;
+
+ read_lock(&pathtbl_resize_lock);
+ hash_idx = mesh_table_hash(addr, dev, mesh_paths);
+ bucket = &mesh_paths->hash_buckets[hash_idx];
+
+ spin_lock(&mesh_paths->hashwlock[hash_idx]);
+ hlist_for_each_entry(node, n, bucket, list) {
+ mpath = node->mpath;
+ if (mpath->dev == dev &&
+ memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
+ spin_lock_bh(&mpath->state_lock);
+ mpath->flags |= MESH_PATH_RESOLVING;
+ hlist_del_rcu(&node->list);
+ call_rcu(&node->rcu, mesh_path_node_reclaim);
+ atomic_dec(&mesh_paths->entries);
+ spin_unlock_bh(&mpath->state_lock);
+ goto enddel;
+ }
+ }
+
+ err = -ENXIO;
+enddel:
+ spin_unlock(&mesh_paths->hashwlock[hash_idx]);
+ read_unlock(&pathtbl_resize_lock);
+ return err;
+}
+
+/**
+ * mesh_path_tx_pending - sends pending frames in a mesh path queue
+ *
+ * @mpath: mesh path to activate
+ *
+ * Locking: the state_lock of the mpath structure must NOT be held when calling
+ * this function.
+ */
+void mesh_path_tx_pending(struct mesh_path *mpath)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&mpath->frame_queue)) &&
+ (mpath->flags & MESH_PATH_ACTIVE))
+ dev_queue_xmit(skb);
+}
+
+/**
+ * mesh_path_discard_frame - discard a frame whose path could not be resolved
+ *
+ * @skb: frame to discard
+ * @dev: network device the frame was to be sent through
+ *
+ * If the frame was beign forwarded from another MP, a PERR frame will be sent
+ * to the precursor.
+ *
+ * Locking: the function must me called within a rcu_read_lock region
+ */
+void mesh_path_discard_frame(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct mesh_path *mpath;
+ u32 dsn = 0;
+
+ if (skb->pkt_type == PACKET_OTHERHOST) {
+ struct ieee80211s_hdr *prev_meshhdr;
+ int mshhdrlen;
+ u8 *ra, *da;
+
+ prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb);
+ mshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr);
+ da = skb->data;
+ ra = MESH_PREQ(skb);
+ mpath = mesh_path_lookup(da, dev);
+ if (mpath)
+ dsn = ++mpath->dsn;
+ mesh_path_error_tx(skb->data, cpu_to_le32(dsn), ra, dev);
+ }
+
+ kfree_skb(skb);
+ sdata->u.sta.mshstats.dropped_frames_no_route++;
+}
+
+/**
+ * mesh_path_flush_pending - free the pending queue of a mesh path
+ *
+ * @mpath: mesh path whose queue has to be freed
+ *
+ * Locking: the function must me called withing a rcu_read_lock region
+ */
+void mesh_path_flush_pending(struct mesh_path *mpath)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct sk_buff *skb;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(mpath->dev);
+
+ while ((skb = skb_dequeue(&mpath->frame_queue)) &&
+ (mpath->flags & MESH_PATH_ACTIVE))
+ mesh_path_discard_frame(skb, mpath->dev);
+}
+
+/**
+ * mesh_path_fix_nexthop - force a specific next hop for a mesh path
+ *
+ * @mpath: the mesh path to modify
+ * @next_hop: the next hop to force
+ *
+ * Locking: this function must be called holding mpath->state_lock
+ */
+void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop)
+{
+ spin_lock_bh(&mpath->state_lock);
+ mesh_path_assign_nexthop(mpath, next_hop);
+ mpath->dsn = 0xffff;
+ mpath->metric = 0;
+ mpath->hop_count = 0;
+ mpath->exp_time = 0;
+ mpath->flags |= MESH_PATH_FIXED;
+ mesh_path_activate(mpath);
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_tx_pending(mpath);
+}
+
+static void mesh_path_node_free(struct hlist_node *p, bool free_leafs)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node = hlist_entry(p, struct mpath_node, list);
+ mpath = node->mpath;
+ hlist_del_rcu(p);
+ synchronize_rcu();
+ if (free_leafs)
+ kfree(mpath);
+ kfree(node);
+}
+
+static void mesh_path_node_copy(struct hlist_node *p, struct mesh_table *newtbl)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node, *new_node;
+ u32 hash_idx;
+
+ node = hlist_entry(p, struct mpath_node, list);
+ mpath = node->mpath;
+ new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL);
+ new_node->mpath = mpath;
+ hash_idx = mesh_table_hash(mpath->dst, mpath->dev, newtbl);
+ hlist_add_head(&new_node->list,
+ &newtbl->hash_buckets[hash_idx]);
+}
+
+int mesh_pathtbl_init(void)
+{
+ mesh_paths = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
+ mesh_paths->free_node = &mesh_path_node_free;
+ mesh_paths->copy_node = &mesh_path_node_copy;
+ mesh_paths->mean_chain_len = MEAN_CHAIN_LEN;
+ if (!mesh_paths)
+ return -ENOMEM;
+ return 0;
+}
+
+void mesh_path_expire(struct net_device *dev)
+{
+ struct mesh_path *mpath;
+ struct mpath_node *node;
+ struct hlist_node *p;
+ int i;
+
+ read_lock(&pathtbl_resize_lock);
+ for_each_mesh_entry(mesh_paths, p, node, i) {
+ if (node->mpath->dev != dev)
+ continue;
+ mpath = node->mpath;
+ spin_lock_bh(&mpath->state_lock);
+ if ((!(mpath->flags & MESH_PATH_RESOLVING)) &&
+ (!(mpath->flags & MESH_PATH_FIXED)) &&
+ time_after(jiffies,
+ mpath->exp_time + MESH_PATH_EXPIRE)) {
+ spin_unlock_bh(&mpath->state_lock);
+ mesh_path_del(mpath->dst, mpath->dev);
+ } else
+ spin_unlock_bh(&mpath->state_lock);
+ }
+ read_unlock(&pathtbl_resize_lock);
+}
+
+void mesh_pathtbl_unregister(void)
+{
+ mesh_table_free(mesh_paths, true);
+}
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
new file mode 100644
index 0000000..37f0c2b
--- /dev/null
+++ b/net/mac80211/mesh_plink.c
@@ -0,0 +1,762 @@
+/*
+ * Copyright (c) 2008 open80211s Ltd.
+ * Author: Luis Carlos Cobo <luisca@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "mesh.h"
+
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+#define mpl_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args)
+#else
+#define mpl_dbg(fmt, args...) do { (void)(0); } while (0)
+#endif
+
+#define PLINK_GET_FRAME_SUBTYPE(p) (p)
+#define PLINK_GET_LLID(p) (p + 1)
+#define PLINK_GET_PLID(p) (p + 3)
+
+#define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
+ jiffies + HZ * t / 1000))
+
+/* Peer link cancel reasons, all subject to ANA approval */
+#define MESH_LINK_CANCELLED 2
+#define MESH_MAX_NEIGHBORS 3
+#define MESH_CAPABILITY_POLICY_VIOLATION 4
+#define MESH_CLOSE_RCVD 5
+#define MESH_MAX_RETRIES 6
+#define MESH_CONFIRM_TIMEOUT 7
+#define MESH_SECURITY_ROLE_NEGOTIATION_DIFFERS 8
+#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9
+#define MESH_SECURITY_FAILED_VERIFICATION 10
+
+#define dot11MeshMaxRetries(s) (s->u.sta.mshcfg.dot11MeshMaxRetries)
+#define dot11MeshRetryTimeout(s) (s->u.sta.mshcfg.dot11MeshRetryTimeout)
+#define dot11MeshConfirmTimeout(s) (s->u.sta.mshcfg.dot11MeshConfirmTimeout)
+#define dot11MeshHoldingTimeout(s) (s->u.sta.mshcfg.dot11MeshHoldingTimeout)
+#define dot11MeshMaxPeerLinks(s) (s->u.sta.mshcfg.dot11MeshMaxPeerLinks)
+
+enum plink_frame_type {
+ PLINK_OPEN = 0,
+ PLINK_CONFIRM,
+ PLINK_CLOSE
+};
+
+enum plink_event {
+ PLINK_UNDEFINED,
+ OPN_ACPT,
+ OPN_RJCT,
+ OPN_IGNR,
+ CNF_ACPT,
+ CNF_RJCT,
+ CNF_IGNR,
+ CLS_ACPT,
+ CLS_IGNR
+};
+
+static inline
+void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+ atomic_inc(&sdata->u.sta.mshstats.estab_plinks);
+ mesh_accept_plinks_update(sdata);
+}
+
+static inline
+void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+ atomic_dec(&sdata->u.sta.mshstats.estab_plinks);
+ mesh_accept_plinks_update(sdata);
+}
+
+/**
+ * mesh_plink_fsm_restart - restart a mesh peer link finite state machine
+ *
+ * @sta: mes peer link to restart
+ *
+ * Locking: this function must be called holding sta->plink_lock
+ */
+static inline void mesh_plink_fsm_restart(struct sta_info *sta)
+{
+ sta->plink_state = PLINK_LISTEN;
+ sta->llid = sta->plid = sta->reason = 0;
+ sta->plink_retries = 0;
+}
+
+/*
+ * NOTE: This is just an alias for sta_info_alloc(), see notes
+ * on it in the lifecycle management section!
+ */
+static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
+ u8 *hw_addr, u64 rates)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta;
+
+ if (local->num_sta >= MESH_MAX_PLINKS)
+ return NULL;
+
+ sta = sta_info_alloc(sdata, hw_addr, GFP_ATOMIC);
+ if (!sta)
+ return NULL;
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+ sta->supp_rates[local->hw.conf.channel->band] = rates;
+
+ return sta;
+}
+
+/**
+ * mesh_plink_deactivate - deactivate mesh peer link
+ *
+ * @sta: mesh peer link to deactivate
+ *
+ * All mesh paths with this peer as next hop will be flushed
+ *
+ * Locking: the caller must hold sta->plink_lock
+ */
+static void __mesh_plink_deactivate(struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+
+ if (sta->plink_state == PLINK_ESTAB)
+ mesh_plink_dec_estab_count(sdata);
+ sta->plink_state = PLINK_BLOCKED;
+ mesh_path_flush_by_nexthop(sta);
+}
+
+/**
+ * __mesh_plink_deactivate - deactivate mesh peer link
+ *
+ * @sta: mesh peer link to deactivate
+ *
+ * All mesh paths with this peer as next hop will be flushed
+ */
+void mesh_plink_deactivate(struct sta_info *sta)
+{
+ spin_lock_bh(&sta->plink_lock);
+ __mesh_plink_deactivate(sta);
+ spin_unlock_bh(&sta->plink_lock);
+}
+
+static int mesh_plink_frame_tx(struct net_device *dev,
+ enum plink_frame_type action, u8 *da, __le16 llid, __le16 plid,
+ __le16 reason) {
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ struct ieee80211_mgmt *mgmt;
+ bool include_plid = false;
+ u8 *pos;
+ int ie_len;
+
+ if (!skb)
+ return -1;
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ /* 25 is the size of the common mgmt part (24) plus the size of the
+ * common action part (1)
+ */
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 25 + sizeof(mgmt->u.action.u.plink_action));
+ memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.plink_action));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ /* BSSID is left zeroed, wildcard value */
+ mgmt->u.action.category = PLINK_CATEGORY;
+ mgmt->u.action.u.plink_action.action_code = action;
+
+ if (action == PLINK_CLOSE)
+ mgmt->u.action.u.plink_action.aux = reason;
+ else {
+ mgmt->u.action.u.plink_action.aux = cpu_to_le16(0x0);
+ if (action == PLINK_CONFIRM) {
+ pos = skb_put(skb, 4);
+ /* two-byte status code followed by two-byte AID */
+ memset(pos, 0, 4);
+ }
+ mesh_mgmt_ies_add(skb, dev);
+ }
+
+ /* Add Peer Link Management element */
+ switch (action) {
+ case PLINK_OPEN:
+ ie_len = 3;
+ break;
+ case PLINK_CONFIRM:
+ ie_len = 5;
+ include_plid = true;
+ break;
+ case PLINK_CLOSE:
+ default:
+ if (!plid)
+ ie_len = 5;
+ else {
+ ie_len = 7;
+ include_plid = true;
+ }
+ break;
+ }
+
+ pos = skb_put(skb, 2 + ie_len);
+ *pos++ = WLAN_EID_PEER_LINK;
+ *pos++ = ie_len;
+ *pos++ = action;
+ memcpy(pos, &llid, 2);
+ if (include_plid) {
+ pos += 2;
+ memcpy(pos, &plid, 2);
+ }
+ if (action == PLINK_CLOSE) {
+ pos += 2;
+ memcpy(pos, &reason, 2);
+ }
+
+ ieee80211_sta_tx(dev, skb, 0);
+ return 0;
+}
+
+void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev,
+ bool peer_accepting_plinks)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, hw_addr);
+ if (!sta) {
+ sta = mesh_plink_alloc(sdata, hw_addr, rates);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+ if (sta_info_insert(sta)) {
+ rcu_read_unlock();
+ return;
+ }
+ }
+
+ sta->last_rx = jiffies;
+ sta->supp_rates[local->hw.conf.channel->band] = rates;
+ if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN &&
+ sdata->u.sta.accepting_plinks &&
+ sdata->u.sta.mshcfg.auto_open_plinks)
+ mesh_plink_open(sta);
+
+ rcu_read_unlock();
+}
+
+static void mesh_plink_timer(unsigned long data)
+{
+ struct sta_info *sta;
+ __le16 llid, plid, reason;
+ struct net_device *dev = NULL;
+ struct ieee80211_sub_if_data *sdata;
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+ DECLARE_MAC_BUF(mac);
+#endif
+
+ /*
+ * This STA is valid because sta_info_destroy() will
+ * del_timer_sync() this timer after having made sure
+ * it cannot be readded (by deleting the plink.)
+ */
+ sta = (struct sta_info *) data;
+
+ spin_lock_bh(&sta->plink_lock);
+ if (sta->ignore_plink_timer) {
+ sta->ignore_plink_timer = false;
+ spin_unlock_bh(&sta->plink_lock);
+ return;
+ }
+ mpl_dbg("Mesh plink timer for %s fired on state %d\n",
+ print_mac(mac, sta->addr), sta->plink_state);
+ reason = 0;
+ llid = sta->llid;
+ plid = sta->plid;
+ sdata = sta->sdata;
+ dev = sdata->dev;
+
+ switch (sta->plink_state) {
+ case PLINK_OPN_RCVD:
+ case PLINK_OPN_SNT:
+ /* retry timer */
+ if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
+ u32 rand;
+ mpl_dbg("Mesh plink for %s (retry, timeout): %d %d\n",
+ print_mac(mac, sta->addr),
+ sta->plink_retries, sta->plink_timeout);
+ get_random_bytes(&rand, sizeof(u32));
+ sta->plink_timeout = sta->plink_timeout +
+ rand % sta->plink_timeout;
+ ++sta->plink_retries;
+ mod_plink_timer(sta, sta->plink_timeout);
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_OPEN, sta->addr, llid,
+ 0, 0);
+ break;
+ }
+ reason = cpu_to_le16(MESH_MAX_RETRIES);
+ /* fall through on else */
+ case PLINK_CNF_RCVD:
+ /* confirm timer */
+ if (!reason)
+ reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT);
+ sta->plink_state = PLINK_HOLDING;
+ mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, plid,
+ reason);
+ break;
+ case PLINK_HOLDING:
+ /* holding timer */
+ del_timer(&sta->plink_timer);
+ mesh_plink_fsm_restart(sta);
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+}
+
+static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
+{
+ sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
+ sta->plink_timer.data = (unsigned long) sta;
+ sta->plink_timer.function = mesh_plink_timer;
+ sta->plink_timeout = timeout;
+ add_timer(&sta->plink_timer);
+}
+
+int mesh_plink_open(struct sta_info *sta)
+{
+ __le16 llid;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+ DECLARE_MAC_BUF(mac);
+#endif
+
+ spin_lock_bh(&sta->plink_lock);
+ get_random_bytes(&llid, 2);
+ sta->llid = llid;
+ if (sta->plink_state != PLINK_LISTEN) {
+ spin_unlock_bh(&sta->plink_lock);
+ return -EBUSY;
+ }
+ sta->plink_state = PLINK_OPN_SNT;
+ mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
+ spin_unlock_bh(&sta->plink_lock);
+ mpl_dbg("Mesh plink: starting establishment with %s\n",
+ print_mac(mac, sta->addr));
+
+ return mesh_plink_frame_tx(sdata->dev, PLINK_OPEN,
+ sta->addr, llid, 0, 0);
+}
+
+void mesh_plink_block(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+ DECLARE_MAC_BUF(mac);
+#endif
+
+ spin_lock_bh(&sta->plink_lock);
+ __mesh_plink_deactivate(sta);
+ sta->plink_state = PLINK_BLOCKED;
+ spin_unlock_bh(&sta->plink_lock);
+}
+
+int mesh_plink_close(struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ __le16 llid, plid, reason;
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+ DECLARE_MAC_BUF(mac);
+#endif
+
+ mpl_dbg("Mesh plink: closing link with %s\n",
+ print_mac(mac, sta->addr));
+ spin_lock_bh(&sta->plink_lock);
+ sta->reason = cpu_to_le16(MESH_LINK_CANCELLED);
+ reason = sta->reason;
+
+ if (sta->plink_state == PLINK_LISTEN ||
+ sta->plink_state == PLINK_BLOCKED) {
+ mesh_plink_fsm_restart(sta);
+ spin_unlock_bh(&sta->plink_lock);
+ return 0;
+ } else if (sta->plink_state == PLINK_ESTAB) {
+ __mesh_plink_deactivate(sta);
+ /* The timer should not be running */
+ mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
+ } else if (!mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)))
+ sta->ignore_plink_timer = true;
+
+ sta->plink_state = PLINK_HOLDING;
+ llid = sta->llid;
+ plid = sta->plid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(sta->sdata->dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ return 0;
+}
+
+void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
+ size_t len, struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee802_11_elems elems;
+ struct sta_info *sta;
+ enum plink_event event;
+ enum plink_frame_type ftype;
+ size_t baselen;
+ u8 ie_len;
+ u8 *baseaddr;
+ __le16 plid, llid, reason;
+#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
+ DECLARE_MAC_BUF(mac);
+#endif
+
+ if (is_multicast_ether_addr(mgmt->da)) {
+ mpl_dbg("Mesh plink: ignore frame from multicast address");
+ return;
+ }
+
+ baseaddr = mgmt->u.action.u.plink_action.variable;
+ baselen = (u8 *) mgmt->u.action.u.plink_action.variable - (u8 *) mgmt;
+ if (mgmt->u.action.u.plink_action.action_code == PLINK_CONFIRM) {
+ baseaddr += 4;
+ baselen -= 4;
+ }
+ ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
+ if (!elems.peer_link) {
+ mpl_dbg("Mesh plink: missing necessary peer link ie\n");
+ return;
+ }
+
+ ftype = *((u8 *)PLINK_GET_FRAME_SUBTYPE(elems.peer_link));
+ ie_len = elems.peer_link_len;
+ if ((ftype == PLINK_OPEN && ie_len != 3) ||
+ (ftype == PLINK_CONFIRM && ie_len != 5) ||
+ (ftype == PLINK_CLOSE && ie_len != 5 && ie_len != 7)) {
+ mpl_dbg("Mesh plink: incorrect plink ie length\n");
+ return;
+ }
+
+ if (ftype != PLINK_CLOSE && (!elems.mesh_id || !elems.mesh_config)) {
+ mpl_dbg("Mesh plink: missing necessary ie\n");
+ return;
+ }
+ /* Note the lines below are correct, the llid in the frame is the plid
+ * from the point of view of this host.
+ */
+ memcpy(&plid, PLINK_GET_LLID(elems.peer_link), 2);
+ if (ftype == PLINK_CONFIRM || (ftype == PLINK_CLOSE && ie_len == 7))
+ memcpy(&llid, PLINK_GET_PLID(elems.peer_link), 2);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta && ftype != PLINK_OPEN) {
+ mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
+ rcu_read_unlock();
+ return;
+ }
+
+ if (sta && sta->plink_state == PLINK_BLOCKED) {
+ rcu_read_unlock();
+ return;
+ }
+
+ /* Now we will figure out the appropriate event... */
+ event = PLINK_UNDEFINED;
+ if (ftype != PLINK_CLOSE && (!mesh_matches_local(&elems, dev))) {
+ switch (ftype) {
+ case PLINK_OPEN:
+ event = OPN_RJCT;
+ break;
+ case PLINK_CONFIRM:
+ event = CNF_RJCT;
+ break;
+ case PLINK_CLOSE:
+ /* avoid warning */
+ break;
+ }
+ spin_lock_bh(&sta->plink_lock);
+ } else if (!sta) {
+ /* ftype == PLINK_OPEN */
+ u64 rates;
+ if (!mesh_plink_free_count(sdata)) {
+ mpl_dbg("Mesh plink error: no more free plinks\n");
+ rcu_read_unlock();
+ return;
+ }
+
+ rates = ieee80211_sta_get_rates(local, &elems, rx_status->band);
+ sta = mesh_plink_alloc(sdata, mgmt->sa, rates);
+ if (!sta) {
+ mpl_dbg("Mesh plink error: plink table full\n");
+ rcu_read_unlock();
+ return;
+ }
+ if (sta_info_insert(sta)) {
+ rcu_read_unlock();
+ return;
+ }
+ event = OPN_ACPT;
+ spin_lock_bh(&sta->plink_lock);
+ } else {
+ spin_lock_bh(&sta->plink_lock);
+ switch (ftype) {
+ case PLINK_OPEN:
+ if (!mesh_plink_free_count(sdata) ||
+ (sta->plid && sta->plid != plid))
+ event = OPN_IGNR;
+ else
+ event = OPN_ACPT;
+ break;
+ case PLINK_CONFIRM:
+ if (!mesh_plink_free_count(sdata) ||
+ (sta->llid != llid || sta->plid != plid))
+ event = CNF_IGNR;
+ else
+ event = CNF_ACPT;
+ break;
+ case PLINK_CLOSE:
+ if (sta->plink_state == PLINK_ESTAB)
+ /* Do not check for llid or plid. This does not
+ * follow the standard but since multiple plinks
+ * per sta are not supported, it is necessary in
+ * order to avoid a livelock when MP A sees an
+ * establish peer link to MP B but MP B does not
+ * see it. This can be caused by a timeout in
+ * B's peer link establishment or B beign
+ * restarted.
+ */
+ event = CLS_ACPT;
+ else if (sta->plid != plid)
+ event = CLS_IGNR;
+ else if (ie_len == 7 && sta->llid != llid)
+ event = CLS_IGNR;
+ else
+ event = CLS_ACPT;
+ break;
+ default:
+ mpl_dbg("Mesh plink: unknown frame subtype\n");
+ spin_unlock_bh(&sta->plink_lock);
+ rcu_read_unlock();
+ return;
+ }
+ }
+
+ mpl_dbg("Mesh plink (peer, state, llid, plid, event): %s %d %d %d %d\n",
+ print_mac(mac, mgmt->sa), sta->plink_state,
+ le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
+ event);
+ reason = 0;
+ switch (sta->plink_state) {
+ /* spin_unlock as soon as state is updated at each case */
+ case PLINK_LISTEN:
+ switch (event) {
+ case CLS_ACPT:
+ mesh_plink_fsm_restart(sta);
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ case OPN_ACPT:
+ sta->plink_state = PLINK_OPN_RCVD;
+ sta->plid = plid;
+ get_random_bytes(&llid, 2);
+ sta->llid = llid;
+ mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_OPEN, sta->addr, llid,
+ 0, 0);
+ mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr,
+ llid, plid, 0);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+ break;
+
+ case PLINK_OPN_SNT:
+ switch (event) {
+ case OPN_RJCT:
+ case CNF_RJCT:
+ reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ case CLS_ACPT:
+ if (!reason)
+ reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ sta->reason = reason;
+ sta->plink_state = PLINK_HOLDING;
+ if (!mod_plink_timer(sta,
+ dot11MeshHoldingTimeout(sdata)))
+ sta->ignore_plink_timer = true;
+
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ break;
+ case OPN_ACPT:
+ /* retry timer is left untouched */
+ sta->plink_state = PLINK_OPN_RCVD;
+ sta->plid = plid;
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid,
+ plid, 0);
+ break;
+ case CNF_ACPT:
+ sta->plink_state = PLINK_CNF_RCVD;
+ if (!mod_plink_timer(sta,
+ dot11MeshConfirmTimeout(sdata)))
+ sta->ignore_plink_timer = true;
+
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+ break;
+
+ case PLINK_OPN_RCVD:
+ switch (event) {
+ case OPN_RJCT:
+ case CNF_RJCT:
+ reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ case CLS_ACPT:
+ if (!reason)
+ reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ sta->reason = reason;
+ sta->plink_state = PLINK_HOLDING;
+ if (!mod_plink_timer(sta,
+ dot11MeshHoldingTimeout(sdata)))
+ sta->ignore_plink_timer = true;
+
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ break;
+ case OPN_ACPT:
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid,
+ plid, 0);
+ break;
+ case CNF_ACPT:
+ del_timer(&sta->plink_timer);
+ sta->plink_state = PLINK_ESTAB;
+ mesh_plink_inc_estab_count(sdata);
+ spin_unlock_bh(&sta->plink_lock);
+ mpl_dbg("Mesh plink with %s ESTABLISHED\n",
+ print_mac(mac, sta->addr));
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+ break;
+
+ case PLINK_CNF_RCVD:
+ switch (event) {
+ case OPN_RJCT:
+ case CNF_RJCT:
+ reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+ case CLS_ACPT:
+ if (!reason)
+ reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ sta->reason = reason;
+ sta->plink_state = PLINK_HOLDING;
+ if (!mod_plink_timer(sta,
+ dot11MeshHoldingTimeout(sdata)))
+ sta->ignore_plink_timer = true;
+
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ break;
+ case OPN_ACPT:
+ del_timer(&sta->plink_timer);
+ sta->plink_state = PLINK_ESTAB;
+ mesh_plink_inc_estab_count(sdata);
+ spin_unlock_bh(&sta->plink_lock);
+ mpl_dbg("Mesh plink with %s ESTABLISHED\n",
+ print_mac(mac, sta->addr));
+ mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid,
+ plid, 0);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+ break;
+
+ case PLINK_ESTAB:
+ switch (event) {
+ case CLS_ACPT:
+ reason = cpu_to_le16(MESH_CLOSE_RCVD);
+ sta->reason = reason;
+ __mesh_plink_deactivate(sta);
+ sta->plink_state = PLINK_HOLDING;
+ llid = sta->llid;
+ mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ break;
+ case OPN_ACPT:
+ llid = sta->llid;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid,
+ plid, 0);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+ break;
+ case PLINK_HOLDING:
+ switch (event) {
+ case CLS_ACPT:
+ if (del_timer(&sta->plink_timer))
+ sta->ignore_plink_timer = 1;
+ mesh_plink_fsm_restart(sta);
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ case OPN_ACPT:
+ case CNF_ACPT:
+ case OPN_RJCT:
+ case CNF_RJCT:
+ llid = sta->llid;
+ reason = sta->reason;
+ spin_unlock_bh(&sta->plink_lock);
+ mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid,
+ plid, reason);
+ break;
+ default:
+ spin_unlock_bh(&sta->plink_lock);
+ }
+ break;
+ default:
+ /* should not get here, PLINK_BLOCKED is dealt with at the
+ * beggining of the function
+ */
+ spin_unlock_bh(&sta->plink_lock);
+ break;
+ }
+
+ rcu_read_unlock();
+}
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
new file mode 100644
index 0000000..c6c9e47
--- /dev/null
+++ b/net/mac80211/mlme.c
@@ -0,0 +1,4368 @@
+/*
+ * BSS client mode implementation
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* TODO:
+ * order BSS list by RSSI(?) ("quality of AP")
+ * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
+ * SSID)
+ */
+#include <linux/delay.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <asm/types.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "led.h"
+#include "mesh.h"
+
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
+#define IEEE80211_PROBE_INTERVAL (60 * HZ)
+#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
+#define IEEE80211_SCAN_INTERVAL (2 * HZ)
+#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
+#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
+
+#define IEEE80211_PROBE_DELAY (HZ / 33)
+#define IEEE80211_CHANNEL_TIME (HZ / 33)
+#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
+#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
+#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
+
+#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
+
+
+#define ERP_INFO_USE_PROTECTION BIT(1)
+
+/* mgmt header + 1 byte action code */
+#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
+
+#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
+#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
+#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
+#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
+#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
+
+/* next values represent the buffer size for A-MPDU frame.
+ * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
+#define IEEE80211_MIN_AMPDU_BUF 0x8
+#define IEEE80211_MAX_AMPDU_BUF 0x40
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len);
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len);
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss);
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta);
+static int ieee80211_sta_wep_configured(struct net_device *dev);
+static int ieee80211_sta_start_scan(struct net_device *dev,
+ u8 *ssid, size_t ssid_len);
+static int ieee80211_sta_config_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta);
+
+
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems)
+{
+ size_t left = len;
+ u8 *pos = start;
+
+ memset(elems, 0, sizeof(*elems));
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left)
+ return;
+
+ switch (id) {
+ case WLAN_EID_SSID:
+ elems->ssid = pos;
+ elems->ssid_len = elen;
+ break;
+ case WLAN_EID_SUPP_RATES:
+ elems->supp_rates = pos;
+ elems->supp_rates_len = elen;
+ break;
+ case WLAN_EID_FH_PARAMS:
+ elems->fh_params = pos;
+ elems->fh_params_len = elen;
+ break;
+ case WLAN_EID_DS_PARAMS:
+ elems->ds_params = pos;
+ elems->ds_params_len = elen;
+ break;
+ case WLAN_EID_CF_PARAMS:
+ elems->cf_params = pos;
+ elems->cf_params_len = elen;
+ break;
+ case WLAN_EID_TIM:
+ elems->tim = pos;
+ elems->tim_len = elen;
+ break;
+ case WLAN_EID_IBSS_PARAMS:
+ elems->ibss_params = pos;
+ elems->ibss_params_len = elen;
+ break;
+ case WLAN_EID_CHALLENGE:
+ elems->challenge = pos;
+ elems->challenge_len = elen;
+ break;
+ case WLAN_EID_WPA:
+ if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+ pos[2] == 0xf2) {
+ /* Microsoft OUI (00:50:F2) */
+ if (pos[3] == 1) {
+ /* OUI Type 1 - WPA IE */
+ elems->wpa = pos;
+ elems->wpa_len = elen;
+ } else if (elen >= 5 && pos[3] == 2) {
+ if (pos[4] == 0) {
+ elems->wmm_info = pos;
+ elems->wmm_info_len = elen;
+ } else if (pos[4] == 1) {
+ elems->wmm_param = pos;
+ elems->wmm_param_len = elen;
+ }
+ }
+ }
+ break;
+ case WLAN_EID_RSN:
+ elems->rsn = pos;
+ elems->rsn_len = elen;
+ break;
+ case WLAN_EID_ERP_INFO:
+ elems->erp_info = pos;
+ elems->erp_info_len = elen;
+ break;
+ case WLAN_EID_EXT_SUPP_RATES:
+ elems->ext_supp_rates = pos;
+ elems->ext_supp_rates_len = elen;
+ break;
+ case WLAN_EID_HT_CAPABILITY:
+ elems->ht_cap_elem = pos;
+ elems->ht_cap_elem_len = elen;
+ break;
+ case WLAN_EID_HT_EXTRA_INFO:
+ elems->ht_info_elem = pos;
+ elems->ht_info_elem_len = elen;
+ break;
+ case WLAN_EID_MESH_ID:
+ elems->mesh_id = pos;
+ elems->mesh_id_len = elen;
+ break;
+ case WLAN_EID_MESH_CONFIG:
+ elems->mesh_config = pos;
+ elems->mesh_config_len = elen;
+ break;
+ case WLAN_EID_PEER_LINK:
+ elems->peer_link = pos;
+ elems->peer_link_len = elen;
+ break;
+ case WLAN_EID_PREQ:
+ elems->preq = pos;
+ elems->preq_len = elen;
+ break;
+ case WLAN_EID_PREP:
+ elems->prep = pos;
+ elems->prep_len = elen;
+ break;
+ case WLAN_EID_PERR:
+ elems->perr = pos;
+ elems->perr_len = elen;
+ break;
+ default:
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+}
+
+
+static int ecw2cw(int ecw)
+{
+ return (1 << ecw) - 1;
+}
+
+
+static void ieee80211_sta_def_wmm_params(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ int ibss)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ int i, have_higher_than_11mbit = 0;
+
+
+ /* cf. IEEE 802.11 9.2.12 */
+ for (i = 0; i < bss->supp_rates_len; i++)
+ if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
+ have_higher_than_11mbit = 1;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+
+
+ if (local->ops->conf_tx) {
+ struct ieee80211_tx_queue_params qparam;
+
+ memset(&qparam, 0, sizeof(qparam));
+
+ qparam.aifs = 2;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+ qparam.cw_min = 31;
+ else
+ qparam.cw_min = 15;
+
+ qparam.cw_max = 1023;
+ qparam.txop = 0;
+
+ for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
+ local->ops->conf_tx(local_to_hw(local),
+ i + IEEE80211_TX_QUEUE_DATA0,
+ &qparam);
+
+ if (ibss) {
+ /* IBSS uses different parameters for Beacon sending */
+ qparam.cw_min++;
+ qparam.cw_min *= 2;
+ qparam.cw_min--;
+ local->ops->conf_tx(local_to_hw(local),
+ IEEE80211_TX_QUEUE_BEACON, &qparam);
+ }
+ }
+}
+
+static void ieee80211_sta_wmm_params(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ u8 *wmm_param, size_t wmm_param_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_tx_queue_params params;
+ size_t left;
+ int count;
+ u8 *pos;
+
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return;
+ count = wmm_param[6] & 0x0f;
+ if (count == ifsta->wmm_last_param_set)
+ return;
+ ifsta->wmm_last_param_set = count;
+
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (!local->ops->conf_tx)
+ return;
+
+ local->wmm_acm = 0;
+ for (; left >= 4; left -= 4, pos += 4) {
+ int aci = (pos[0] >> 5) & 0x03;
+ int acm = (pos[0] >> 4) & 0x01;
+ int queue;
+
+ switch (aci) {
+ case 1:
+ queue = IEEE80211_TX_QUEUE_DATA3;
+ if (acm) {
+ local->wmm_acm |= BIT(0) | BIT(3);
+ }
+ break;
+ case 2:
+ queue = IEEE80211_TX_QUEUE_DATA1;
+ if (acm) {
+ local->wmm_acm |= BIT(4) | BIT(5);
+ }
+ break;
+ case 3:
+ queue = IEEE80211_TX_QUEUE_DATA0;
+ if (acm) {
+ local->wmm_acm |= BIT(6) | BIT(7);
+ }
+ break;
+ case 0:
+ default:
+ queue = IEEE80211_TX_QUEUE_DATA2;
+ if (acm) {
+ local->wmm_acm |= BIT(1) | BIT(2);
+ }
+ break;
+ }
+
+ params.aifs = pos[0] & 0x0f;
+ params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+ params.cw_min = ecw2cw(pos[1] & 0x0f);
+ params.txop = pos[2] | (pos[3] << 8);
+#ifdef CONFIG_MAC80211_DEBUG
+ printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d txop=%d\n",
+ dev->name, queue, aci, acm, params.aifs, params.cw_min,
+ params.cw_max, params.txop);
+#endif
+ /* TODO: handle ACM (block TX, fallback to next lowest allowed
+ * AC for now) */
+ if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
+ printk(KERN_DEBUG "%s: failed to set TX queue "
+ "parameters for queue %d\n", dev->name, queue);
+ }
+ }
+}
+
+static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
+ bool use_protection,
+ bool use_short_preamble)
+{
+ struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ DECLARE_MAC_BUF(mac);
+ u32 changed = 0;
+
+ if (use_protection != bss_conf->use_cts_prot) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
+ "%s)\n",
+ sdata->dev->name,
+ use_protection ? "enabled" : "disabled",
+ print_mac(mac, ifsta->bssid));
+ }
+ bss_conf->use_cts_prot = use_protection;
+ changed |= BSS_CHANGED_ERP_CTS_PROT;
+ }
+
+ if (use_short_preamble != bss_conf->use_short_preamble) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: switched to %s barker preamble"
+ " (BSSID=%s)\n",
+ sdata->dev->name,
+ use_short_preamble ? "short" : "long",
+ print_mac(mac, ifsta->bssid));
+ }
+ bss_conf->use_short_preamble = use_short_preamble;
+ changed |= BSS_CHANGED_ERP_PREAMBLE;
+ }
+
+ return changed;
+}
+
+static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
+ u8 erp_value)
+{
+ bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
+ bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
+
+ return ieee80211_handle_protect_preamb(sdata,
+ use_protection, use_short_preamble);
+}
+
+static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta_bss *bss)
+{
+ u32 changed = 0;
+
+ if (bss->has_erp_value)
+ changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value);
+ else {
+ u16 capab = bss->capability;
+ changed |= ieee80211_handle_protect_preamb(sdata, false,
+ (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
+ }
+
+ return changed;
+}
+
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+ struct ieee80211_ht_info *ht_info)
+{
+
+ if (ht_info == NULL)
+ return -EINVAL;
+
+ memset(ht_info, 0, sizeof(*ht_info));
+
+ if (ht_cap_ie) {
+ u8 ampdu_info = ht_cap_ie->ampdu_params_info;
+
+ ht_info->ht_supported = 1;
+ ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
+ ht_info->ampdu_factor =
+ ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
+ ht_info->ampdu_density =
+ (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
+ memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
+ } else
+ ht_info->ht_supported = 0;
+
+ return 0;
+}
+
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ struct ieee80211_ht_addt_info *ht_add_info_ie,
+ struct ieee80211_ht_bss_info *bss_info)
+{
+ if (bss_info == NULL)
+ return -EINVAL;
+
+ memset(bss_info, 0, sizeof(*bss_info));
+
+ if (ht_add_info_ie) {
+ u16 op_mode;
+ op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
+
+ bss_info->primary_channel = ht_add_info_ie->control_chan;
+ bss_info->bss_cap = ht_add_info_ie->ht_param;
+ bss_info->bss_op_mode = (u8)(op_mode & 0xff);
+ }
+
+ return 0;
+}
+
+static void ieee80211_sta_send_associnfo(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ char *buf;
+ size_t len;
+ int i;
+ union iwreq_data wrqu;
+
+ if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
+ return;
+
+ buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
+ ifsta->assocresp_ies_len), GFP_KERNEL);
+ if (!buf)
+ return;
+
+ len = sprintf(buf, "ASSOCINFO(");
+ if (ifsta->assocreq_ies) {
+ len += sprintf(buf + len, "ReqIEs=");
+ for (i = 0; i < ifsta->assocreq_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocreq_ies[i]);
+ }
+ }
+ if (ifsta->assocresp_ies) {
+ if (ifsta->assocreq_ies)
+ len += sprintf(buf + len, " ");
+ len += sprintf(buf + len, "RespIEs=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+ len += sprintf(buf + len, ")");
+
+ if (len > IW_CUSTOM_MAX) {
+ len = sprintf(buf, "ASSOCRESPIE=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = len;
+ wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+
+ kfree(buf);
+}
+
+
+static void ieee80211_set_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ bool assoc)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_conf *conf = &local_to_hw(local)->conf;
+ union iwreq_data wrqu;
+ u32 changed = BSS_CHANGED_ASSOC;
+
+ if (assoc) {
+ struct ieee80211_sta_bss *bss;
+
+ ifsta->flags |= IEEE80211_STA_ASSOCIATED;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ conf->channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ /* set timing information */
+ sdata->bss_conf.beacon_int = bss->beacon_int;
+ sdata->bss_conf.timestamp = bss->timestamp;
+
+ changed |= ieee80211_handle_bss_capability(sdata, bss);
+
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+ changed |= BSS_CHANGED_HT;
+ sdata->bss_conf.assoc_ht = 1;
+ sdata->bss_conf.ht_conf = &conf->ht_conf;
+ sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
+ }
+
+ ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
+ memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ ieee80211_sta_send_associnfo(dev, ifsta);
+ } else {
+ netif_carrier_off(dev);
+ ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
+ ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
+ ieee80211_reset_erp_info(dev);
+
+ sdata->bss_conf.assoc_ht = 0;
+ sdata->bss_conf.ht_conf = NULL;
+ sdata->bss_conf.ht_bss_conf = NULL;
+
+ memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+ }
+ ifsta->last_probe = jiffies;
+ ieee80211_led_assoc(local, assoc);
+
+ sdata->bss_conf.assoc = assoc;
+ ieee80211_bss_info_change_notify(sdata, changed);
+
+ if (assoc)
+ netif_carrier_on(dev);
+
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+}
+
+static void ieee80211_set_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, int deauth)
+{
+ if (deauth)
+ ifsta->auth_tries = 0;
+ ifsta->assoc_tries = 0;
+ ieee80211_set_associated(dev, ifsta, 0);
+}
+
+void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+ int encrypt)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ skb->dev = sdata->local->mdev;
+ skb_set_mac_header(skb, 0);
+ skb_set_network_header(skb, 0);
+ skb_set_transport_header(skb, 0);
+
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+ pkt_data->ifindex = sdata->dev->ifindex;
+ if (!encrypt)
+ pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
+
+ dev_queue_xmit(skb);
+}
+
+
+static void ieee80211_send_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ int transaction, u8 *extra, size_t extra_len,
+ int encrypt)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + 6 + extra_len);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
+ memset(mgmt, 0, 24 + 6);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_AUTH);
+ if (encrypt)
+ mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
+ mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
+ ifsta->auth_transaction = transaction + 1;
+ mgmt->u.auth.status_code = cpu_to_le16(0);
+ if (extra)
+ memcpy(skb_put(skb, extra_len), extra, extra_len);
+
+ ieee80211_sta_tx(dev, skb, encrypt);
+}
+
+
+static void ieee80211_authenticate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ DECLARE_MAC_BUF(mac);
+
+ ifsta->auth_tries++;
+ if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: authentication with AP %s"
+ " timed out\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ printk(KERN_DEBUG "%s: authenticate with AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+
+ ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
+}
+
+static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
+ struct ieee80211_supported_band *sband,
+ u64 *rates)
+{
+ int i, j, count;
+ *rates = 0;
+ count = 0;
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int rate = (bss->supp_rates[i] & 0x7F) * 5;
+
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
+ }
+
+ return count;
+}
+
+static void ieee80211_send_assoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *ies;
+ int i, len, count, rates_len, supp_rates_len;
+ u16 capab;
+ struct ieee80211_sta_bss *bss;
+ int wmm = 0;
+ struct ieee80211_supported_band *sband;
+ u64 rates = 0;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
+ ifsta->ssid_len);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ capab = ifsta->capab;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+ }
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ capab |= WLAN_CAPABILITY_PRIVACY;
+ if (bss->wmm_ie) {
+ wmm = 1;
+ }
+
+ /* get all rates supported by the device and the AP as
+ * some APs don't like getting a superset of their rates
+ * in the association request (e.g. D-Link DAP 1353 in
+ * b-only mode) */
+ rates_len = ieee80211_compatible_rates(bss, sband, &rates);
+
+ ieee80211_rx_bss_put(dev, bss);
+ } else {
+ rates = ~0;
+ rates_len = sband->n_bitrates;
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+ skb_put(skb, 10);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_REASSOC_REQ);
+ mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
+ memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+ ETH_ALEN);
+ } else {
+ skb_put(skb, 4);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ASSOC_REQ);
+ mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
+ }
+
+ /* SSID */
+ ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ /* add all rates which were marked to be used above */
+ supp_rates_len = rates_len;
+ if (supp_rates_len > 8)
+ supp_rates_len = 8;
+
+ len = sband->n_bitrates;
+ pos = skb_put(skb, supp_rates_len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = supp_rates_len;
+
+ count = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (BIT(i) & rates) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ if (++count == 8)
+ break;
+ }
+ }
+
+ if (count == 8) {
+ pos = skb_put(skb, rates_len - count + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = rates_len - count;
+
+ for (i++; i < sband->n_bitrates; i++) {
+ if (BIT(i) & rates) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+ }
+
+ if (ifsta->extra_ie) {
+ pos = skb_put(skb, ifsta->extra_ie_len);
+ memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+ }
+
+ if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ pos = skb_put(skb, 9);
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ *pos++ = 7; /* len */
+ *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
+ *pos++ = 0x50;
+ *pos++ = 0xf2;
+ *pos++ = 2; /* WME */
+ *pos++ = 0; /* WME info */
+ *pos++ = 1; /* WME ver */
+ *pos++ = 0;
+ }
+ /* wmm support is a must to HT */
+ if (wmm && sband->ht_info.ht_supported) {
+ __le16 tmp = cpu_to_le16(sband->ht_info.cap);
+ pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
+ *pos++ = WLAN_EID_HT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_ht_cap);
+ memset(pos, 0, sizeof(struct ieee80211_ht_cap));
+ memcpy(pos, &tmp, sizeof(u16));
+ pos += sizeof(u16);
+ /* TODO: needs a define here for << 2 */
+ *pos++ = sband->ht_info.ampdu_factor |
+ (sband->ht_info.ampdu_density << 2);
+ memcpy(pos, sband->ht_info.supp_mcs_set, 16);
+ }
+
+ kfree(ifsta->assocreq_ies);
+ ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
+ ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
+ if (ifsta->assocreq_ies)
+ memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_DEAUTH);
+ skb_put(skb, 2);
+ mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_DISASSOC);
+ skb_put(skb, 2);
+ mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_privacy_mismatch(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ int bss_privacy;
+ int wep_privacy;
+ int privacy_invoked;
+
+ if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
+ return 0;
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (!bss)
+ return 0;
+
+ bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
+ wep_privacy = !!ieee80211_sta_wep_configured(dev);
+ privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
+ return 0;
+
+ return 1;
+}
+
+
+static void ieee80211_associate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ DECLARE_MAC_BUF(mac);
+
+ ifsta->assoc_tries++;
+ if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: association with AP %s"
+ " timed out\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ifsta->state = IEEE80211_ASSOCIATE;
+ printk(KERN_DEBUG "%s: associate with AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
+ "mixed-cell disabled - abort association\n", dev->name);
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ieee80211_send_assoc(dev, ifsta);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
+}
+
+
+static void ieee80211_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ int disassoc;
+ DECLARE_MAC_BUF(mac);
+
+ /* TODO: start monitoring current AP signal quality and number of
+ * missed beacons. Scan other channels every now and then and search
+ * for better APs. */
+ /* TODO: remove expired BSSes */
+
+ ifsta->state = IEEE80211_ASSOCIATED;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ifsta->bssid);
+ if (!sta) {
+ printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ disassoc = 1;
+ } else {
+ disassoc = 0;
+ if (time_after(jiffies,
+ sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
+ if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
+ printk(KERN_DEBUG "%s: No ProbeResp from "
+ "current AP %s - assume out of "
+ "range\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ disassoc = 1;
+ sta_info_unlink(&sta);
+ } else
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ local->scan_ssid,
+ local->scan_ssid_len);
+ ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
+ } else {
+ ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+ if (time_after(jiffies, ifsta->last_probe +
+ IEEE80211_PROBE_INTERVAL)) {
+ ifsta->last_probe = jiffies;
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ ifsta->ssid,
+ ifsta->ssid_len);
+ }
+ }
+ }
+
+ rcu_read_unlock();
+
+ if (disassoc && sta)
+ sta_info_destroy(sta);
+
+ if (disassoc) {
+ ifsta->state = IEEE80211_DISABLED;
+ ieee80211_set_associated(dev, ifsta, 0);
+ } else {
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_MONITORING_INTERVAL);
+ }
+}
+
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_supported_band *sband;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *supp_rates, *esupp_rates = NULL;
+ int i;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+ "request\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_PROBE_REQ);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (dst) {
+ memcpy(mgmt->da, dst, ETH_ALEN);
+ memcpy(mgmt->bssid, dst, ETH_ALEN);
+ } else {
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memset(mgmt->bssid, 0xff, ETH_ALEN);
+ }
+ pos = skb_put(skb, 2 + ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ssid_len;
+ memcpy(pos, ssid, ssid_len);
+
+ supp_rates = skb_put(skb, 2);
+ supp_rates[0] = WLAN_EID_SUPP_RATES;
+ supp_rates[1] = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *rate = &sband->bitrates[i];
+ if (esupp_rates) {
+ pos = skb_put(skb, 1);
+ esupp_rates[1]++;
+ } else if (supp_rates[1] == 8) {
+ esupp_rates = skb_put(skb, 3);
+ esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
+ esupp_rates[1] = 1;
+ pos = &esupp_rates[2];
+ } else {
+ pos = skb_put(skb, 1);
+ supp_rates[1]++;
+ }
+ *pos = rate->bitrate / 5;
+ }
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_sta_wep_configured(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (!sdata || !sdata->default_key ||
+ sdata->default_key->conf.alg != ALG_WEP)
+ return 0;
+ return 1;
+}
+
+
+static void ieee80211_auth_completed(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ printk(KERN_DEBUG "%s: authenticated\n", dev->name);
+ ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
+ ieee80211_associate(dev, ifsta);
+}
+
+
+static void ieee80211_auth_challenge(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u8 *pos;
+ struct ieee802_11_elems elems;
+
+ printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
+ pos = mgmt->u.auth.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+ if (!elems.challenge) {
+ printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
+ "frame\n", dev->name);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
+ elems.challenge_len + 2, 1);
+}
+
+static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
+ u8 dialog_token, u16 status, u16 policy,
+ u16 buf_size, u16 timeout)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 capab;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.addba_resp));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer "
+ "for addba resp frame\n", dev->name);
+ return;
+ }
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
+ mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
+
+ capab = (u16)(policy << 1); /* bit 1 aggregation policy */
+ capab |= (u16)(tid << 2); /* bit 5:2 TID number */
+ capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
+
+ mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
+ mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
+ mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
+
+ ieee80211_sta_tx(dev, skb, 0);
+
+ return;
+}
+
+void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
+ u16 tid, u8 dialog_token, u16 start_seq_num,
+ u16 agg_size, u16 timeout)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 capab;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.addba_req));
+
+
+ if (!skb) {
+ printk(KERN_ERR "%s: failed to allocate buffer "
+ "for addba request frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
+
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
+
+ mgmt->u.action.u.addba_req.dialog_token = dialog_token;
+ capab = (u16)(1 << 1); /* bit 1 aggregation policy */
+ capab |= (u16)(tid << 2); /* bit 5:2 TID number */
+ capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */
+
+ mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
+
+ mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
+ mgmt->u.action.u.addba_req.start_seq_num =
+ cpu_to_le16(start_seq_num << 4);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+static void ieee80211_sta_process_addba_request(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct ieee80211_conf *conf = &hw->conf;
+ struct sta_info *sta;
+ struct tid_ampdu_rx *tid_agg_rx;
+ u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
+ u8 dialog_token;
+ int ret = -EOPNOTSUPP;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ /* extract session parameters from addba request frame */
+ dialog_token = mgmt->u.action.u.addba_req.dialog_token;
+ timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
+ start_seq_num =
+ le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
+
+ capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+ ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+ buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
+
+ status = WLAN_STATUS_REQUEST_DECLINED;
+
+ /* sanity check for incoming parameters:
+ * check if configuration can support the BA policy
+ * and if buffer size does not exceeds max value */
+ if (((ba_policy != 1)
+ && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
+ || (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
+ status = WLAN_STATUS_INVALID_QOS_PARAM;
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "AddBA Req with bad params from "
+ "%s on tid %u. policy %d, buffer size %d\n",
+ print_mac(mac, mgmt->sa), tid, ba_policy,
+ buf_size);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto end_no_lock;
+ }
+ /* determine default buffer size */
+ if (buf_size == 0) {
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[conf->channel->band];
+ buf_size = IEEE80211_MIN_AMPDU_BUF;
+ buf_size = buf_size << sband->ht_info.ampdu_factor;
+ }
+
+
+ /* examine state machine */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+ if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "unexpected AddBA Req from "
+ "%s on tid %u\n",
+ print_mac(mac, mgmt->sa), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto end;
+ }
+
+ /* prepare A-MPDU MLME for Rx aggregation */
+ sta->ampdu_mlme.tid_rx[tid] =
+ kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
+ if (!sta->ampdu_mlme.tid_rx[tid]) {
+ if (net_ratelimit())
+ printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
+ tid);
+ goto end;
+ }
+ /* rx timer */
+ sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
+ sta_rx_agg_session_timer_expired;
+ sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
+ (unsigned long)&sta->timer_to_tid[tid];
+ init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+ tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
+ /* prepare reordering buffer */
+ tid_agg_rx->reorder_buf =
+ kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC);
+ if (!tid_agg_rx->reorder_buf) {
+ if (net_ratelimit())
+ printk(KERN_ERR "can not allocate reordering buffer "
+ "to tid %d\n", tid);
+ kfree(sta->ampdu_mlme.tid_rx[tid]);
+ goto end;
+ }
+ memset(tid_agg_rx->reorder_buf, 0,
+ buf_size * sizeof(struct sk_buff *));
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
+ sta->addr, tid, &start_seq_num);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ if (ret) {
+ kfree(tid_agg_rx->reorder_buf);
+ kfree(tid_agg_rx);
+ sta->ampdu_mlme.tid_rx[tid] = NULL;
+ goto end;
+ }
+
+ /* change state and send addba resp */
+ sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
+ tid_agg_rx->dialog_token = dialog_token;
+ tid_agg_rx->ssn = start_seq_num;
+ tid_agg_rx->head_seq_num = start_seq_num;
+ tid_agg_rx->buf_size = buf_size;
+ tid_agg_rx->timeout = timeout;
+ tid_agg_rx->stored_mpdu_num = 0;
+ status = WLAN_STATUS_SUCCESS;
+end:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+end_no_lock:
+ ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid,
+ dialog_token, status, 1, buf_size, timeout);
+ rcu_read_unlock();
+}
+
+static void ieee80211_sta_process_addba_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ u16 capab;
+ u16 tid;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:"
+ "%d\n", *state);
+ goto addba_resp_exit;
+ }
+
+ if (mgmt->u.action.u.addba_resp.dialog_token !=
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto addba_resp_exit;
+ }
+
+ del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
+ == WLAN_STATUS_SUCCESS) {
+ if (*state & HT_ADDBA_RECEIVED_MSK)
+ printk(KERN_DEBUG "double addBA response\n");
+
+ *state |= HT_ADDBA_RECEIVED_MSK;
+ sta->ampdu_mlme.addba_req_num[tid] = 0;
+
+ if (*state == HT_AGG_STATE_OPERATIONAL) {
+ printk(KERN_DEBUG "Aggregation on for tid %d \n", tid);
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ }
+
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid);
+ } else {
+ printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid);
+
+ sta->ampdu_mlme.addba_req_num[tid]++;
+ /* this will allow the state check in stop_BA_session */
+ *state = HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+ }
+
+addba_resp_exit:
+ rcu_read_unlock();
+}
+
+void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
+ u16 initiator, u16 reason_code)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 params;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.delba));
+
+ if (!skb) {
+ printk(KERN_ERR "%s: failed to allocate buffer "
+ "for delba frame\n", dev->name);
+ return;
+ }
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
+
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
+ params = (u16)(initiator << 11); /* bit 11 initiator */
+ params |= (u16)(tid << 12); /* bit 15:12 TID number */
+
+ mgmt->u.action.u.delba.params = cpu_to_le16(params);
+ mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid,
+ u16 initiator, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ int ret, i;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ /* check if TID is in operational state */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
+ if (sta->ampdu_mlme.tid_state_rx[tid]
+ != HT_AGG_STATE_OPERATIONAL) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+ rcu_read_unlock();
+ return;
+ }
+ sta->ampdu_mlme.tid_state_rx[tid] =
+ HT_AGG_STATE_REQ_STOP_BA_MSK |
+ (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+ /* stop HW Rx aggregation. ampdu_action existence
+ * already verified in session init so we add the BUG_ON */
+ BUG_ON(!local->ops->ampdu_action);
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
+ ra, tid, NULL);
+ if (ret)
+ printk(KERN_DEBUG "HW problem - can not stop rx "
+ "aggergation for tid %d\n", tid);
+
+ /* shutdown timer has not expired */
+ if (initiator != WLAN_BACK_TIMER)
+ del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+ /* check if this is a self generated aggregation halt */
+ if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
+ ieee80211_send_delba(dev, ra, tid, 0, reason);
+
+ /* free the reordering buffer */
+ for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
+ if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
+ /* release the reordered frames */
+ dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
+ sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
+ sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
+ }
+ }
+ /* free resources */
+ kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
+ kfree(sta->ampdu_mlme.tid_rx[tid]);
+ sta->ampdu_mlme.tid_rx[tid] = NULL;
+ sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
+
+ rcu_read_unlock();
+}
+
+
+static void ieee80211_sta_process_delba(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ u16 tid, params;
+ u16 initiator;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ params = le16_to_cpu(mgmt->u.action.u.delba.params);
+ tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
+ initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
+ print_mac(mac, mgmt->sa),
+ initiator ? "initiator" : "recipient", tid,
+ mgmt->u.action.u.delba.reason_code);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ if (initiator == WLAN_BACK_INITIATOR)
+ ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid,
+ WLAN_BACK_INITIATOR, 0);
+ else { /* WLAN_BACK_RECIPIENT */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ sta->ampdu_mlme.tid_state_tx[tid] =
+ HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
+ WLAN_BACK_RECIPIENT);
+ }
+ rcu_read_unlock();
+}
+
+/*
+ * After sending add Block Ack request we activated a timer until
+ * add Block Ack response will arrive from the recipient.
+ * If this timer expires sta_addba_resp_timer_expired will be executed.
+ */
+void sta_addba_resp_timer_expired(unsigned long data)
+{
+ /* not an elegant detour, but there is no choice as the timer passes
+ * only one argument, and both sta_info and TID are needed, so init
+ * flow in sta_info_create gives the TID as data, while the timer_to_id
+ * array gives the sta through container_of */
+ u16 tid = *(u8 *)data;
+ struct sta_info *temp_sta = container_of((void *)data,
+ struct sta_info, timer_to_tid[tid]);
+
+ struct ieee80211_local *local = temp_sta->local;
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, temp_sta->addr);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* check if the TID waits for addBA response */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ *state = HT_AGG_STATE_IDLE;
+ printk(KERN_DEBUG "timer expired on tid %d but we are not "
+ "expecting addBA response there", tid);
+ goto timer_expired_exit;
+ }
+
+ printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
+
+ /* go through the state check in stop_BA_session */
+ *state = HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+
+timer_expired_exit:
+ rcu_read_unlock();
+}
+
+/*
+ * After accepting the AddBA Request we activated a timer,
+ * resetting it after each frame that arrives from the originator.
+ * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
+ */
+void sta_rx_agg_session_timer_expired(unsigned long data)
+{
+ /* not an elegant detour, but there is no choice as the timer passes
+ * only one argument, and various sta_info are needed here, so init
+ * flow in sta_info_create gives the TID as data, while the timer_to_id
+ * array gives the sta through container_of */
+ u8 *ptid = (u8 *)data;
+ u8 *timer_to_id = ptid - *ptid;
+ struct sta_info *sta = container_of(timer_to_id, struct sta_info,
+ timer_to_tid[0]);
+
+ printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
+ ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr,
+ (u16)*ptid, WLAN_BACK_TIMER,
+ WLAN_REASON_QSTA_TIMEOUT);
+}
+
+void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int i;
+
+ for (i = 0; i < STA_TID_NUM; i++) {
+ ieee80211_stop_tx_ba_session(&local->hw, addr, i,
+ WLAN_BACK_INITIATOR);
+ ieee80211_sta_stop_rx_ba_session(dev, addr, i,
+ WLAN_BACK_RECIPIENT,
+ WLAN_REASON_QSTA_LEAVE_QBSS);
+ }
+}
+
+static void ieee80211_rx_mgmt_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ u16 auth_alg, auth_transaction, status_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (ifsta->state != IEEE80211_AUTHENTICATE &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "%s, but not in authenticate state - ignored\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown BSSID (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+ auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+ status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+ printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d "
+ "transaction=%d status=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), auth_alg,
+ auth_transaction, status_code);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ /* IEEE 802.11 standard does not require authentication in IBSS
+ * networks and most implementations do not seem to use it.
+ * However, try to reply to authentication attempts if someone
+ * has actually implemented this.
+ * TODO: Could implement shared key authentication. */
+ if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
+ printk(KERN_DEBUG "%s: unexpected IBSS authentication "
+ "frame (alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
+ }
+
+ if (auth_alg != ifsta->auth_alg ||
+ auth_transaction != ifsta->auth_transaction) {
+ printk(KERN_DEBUG "%s: unexpected authentication frame "
+ "(alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
+ "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
+ if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
+ u8 algs[3];
+ const int num_algs = ARRAY_SIZE(algs);
+ int i, pos;
+ algs[0] = algs[1] = algs[2] = 0xff;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ algs[0] = WLAN_AUTH_OPEN;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ algs[1] = WLAN_AUTH_SHARED_KEY;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ algs[2] = WLAN_AUTH_LEAP;
+ if (ifsta->auth_alg == WLAN_AUTH_OPEN)
+ pos = 0;
+ else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
+ pos = 1;
+ else
+ pos = 2;
+ for (i = 0; i < num_algs; i++) {
+ pos++;
+ if (pos >= num_algs)
+ pos = 0;
+ if (algs[pos] == ifsta->auth_alg ||
+ algs[pos] == 0xff)
+ continue;
+ if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
+ !ieee80211_sta_wep_configured(dev))
+ continue;
+ ifsta->auth_alg = algs[pos];
+ printk(KERN_DEBUG "%s: set auth_alg=%d for "
+ "next try\n",
+ dev->name, ifsta->auth_alg);
+ break;
+ }
+ }
+ return;
+ }
+
+ switch (ifsta->auth_alg) {
+ case WLAN_AUTH_OPEN:
+ case WLAN_AUTH_LEAP:
+ ieee80211_auth_completed(dev, ifsta);
+ break;
+ case WLAN_AUTH_SHARED_KEY:
+ if (ifsta->auth_transaction == 4)
+ ieee80211_auth_completed(dev, ifsta);
+ else
+ ieee80211_auth_challenge(dev, ifsta, mgmt, len);
+ break;
+ }
+}
+
+
+static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u16 reason_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: deauthentication frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+
+ printk(KERN_DEBUG "%s: RX deauthentication from %s"
+ " (reason=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), reason_code);
+
+ if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) {
+ printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
+ }
+
+ if (ifsta->state == IEEE80211_AUTHENTICATE ||
+ ifsta->state == IEEE80211_ASSOCIATE ||
+ ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_disassoc(dev, ifsta, 1);
+ ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
+}
+
+
+static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u16 reason_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: disassociation frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+
+ printk(KERN_DEBUG "%s: RX disassociation from %s"
+ " (reason=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), reason_code);
+
+ if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
+ printk(KERN_DEBUG "%s: disassociated\n", dev->name);
+
+ if (ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_ASSOCIATE;
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_disassoc(dev, ifsta, 0);
+}
+
+
+static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ int reassoc)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct net_device *dev = sdata->dev;
+ struct ieee80211_supported_band *sband;
+ struct sta_info *sta;
+ u64 rates, basic_rates;
+ u16 capab_info, status_code, aid;
+ struct ieee802_11_elems elems;
+ struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+ u8 *pos;
+ int i, j;
+ DECLARE_MAC_BUF(mac);
+ bool have_higher_than_11mbit = false;
+
+ /* AssocResp and ReassocResp have identical structure, so process both
+ * of them in this function. */
+
+ if (ifsta->state != IEEE80211_ASSOCIATE) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ "%s, but not in associate state - ignored\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) association frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+ status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+ aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+
+ printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
+ "status=%d aid=%d)\n",
+ dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
+ capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
+ dev->name, status_code);
+ /* if this was a reassociation, ensure we try a "full"
+ * association next time. This works around some broken APs
+ * which do not correctly reject reassociation requests. */
+ ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ return;
+ }
+
+ if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
+ printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
+ "set\n", dev->name, aid);
+ aid &= ~(BIT(15) | BIT(14));
+
+ pos = mgmt->u.assoc_resp.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+
+ if (!elems.supp_rates) {
+ printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
+ dev->name);
+ return;
+ }
+
+ printk(KERN_DEBUG "%s: associated\n", dev->name);
+ ifsta->aid = aid;
+ ifsta->ap_capab = capab_info;
+
+ kfree(ifsta->assocresp_ies);
+ ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
+ ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
+ if (ifsta->assocresp_ies)
+ memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
+
+ rcu_read_lock();
+
+ /* Add STA entry for the AP */
+ sta = sta_info_get(local, ifsta->bssid);
+ if (!sta) {
+ struct ieee80211_sta_bss *bss;
+ int err;
+
+ sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
+ if (!sta) {
+ printk(KERN_DEBUG "%s: failed to alloc STA entry for"
+ " the AP\n", dev->name);
+ rcu_read_unlock();
+ return;
+ }
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ sta->last_rssi = bss->rssi;
+ sta->last_signal = bss->signal;
+ sta->last_noise = bss->noise;
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ err = sta_info_insert(sta);
+ if (err) {
+ printk(KERN_DEBUG "%s: failed to insert STA entry for"
+ " the AP (error %d)\n", dev->name, err);
+ rcu_read_unlock();
+ return;
+ }
+ }
+
+ /*
+ * FIXME: Do we really need to update the sta_info's information here?
+ * We already know about the AP (we found it in our list) so it
+ * should already be filled with the right info, no?
+ * As is stands, all this is racy because typically we assume
+ * the information that is filled in here (except flags) doesn't
+ * change while a STA structure is alive. As such, it should move
+ * to between the sta_info_alloc() and sta_info_insert() above.
+ */
+
+ sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP |
+ WLAN_STA_AUTHORIZED;
+
+ rates = 0;
+ basic_rates = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ for (i = 0; i < elems.supp_rates_len; i++) {
+ int rate = (elems.supp_rates[i] & 0x7f) * 5;
+
+ if (rate > 110)
+ have_higher_than_11mbit = true;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ if (elems.supp_rates[i] & 0x80)
+ basic_rates |= BIT(j);
+ }
+ }
+
+ for (i = 0; i < elems.ext_supp_rates_len; i++) {
+ int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
+
+ if (rate > 110)
+ have_higher_than_11mbit = true;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ if (elems.ext_supp_rates[i] & 0x80)
+ basic_rates |= BIT(j);
+ }
+ }
+
+ sta->supp_rates[local->hw.conf.channel->band] = rates;
+ sdata->basic_rates = basic_rates;
+
+ /* cf. IEEE 802.11 9.2.12 */
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+
+ if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) {
+ struct ieee80211_ht_bss_info bss_info;
+ ieee80211_ht_cap_ie_to_ht_info(
+ (struct ieee80211_ht_cap *)
+ elems.ht_cap_elem, &sta->ht_info);
+ ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ (struct ieee80211_ht_addt_info *)
+ elems.ht_info_elem, &bss_info);
+ ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
+ }
+
+ rate_control_rate_init(sta, local);
+
+ if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ sta->flags |= WLAN_STA_WME;
+ rcu_read_unlock();
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ } else
+ rcu_read_unlock();
+
+ /* set AID and assoc capability,
+ * ieee80211_set_associated() will tell the driver */
+ bss_conf->aid = aid;
+ bss_conf->assoc_capability = capab_info;
+ ieee80211_set_associated(dev, ifsta, 1);
+
+ ieee80211_associated(dev, ifsta);
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ u8 hash_idx;
+
+ if (bss_mesh_cfg(bss))
+ hash_idx = mesh_id_hash(bss_mesh_id(bss),
+ bss_mesh_id_len(bss));
+ else
+ hash_idx = STA_HASH(bss->bssid);
+
+ bss->hnext = local->sta_bss_hash[hash_idx];
+ local->sta_bss_hash[hash_idx] = bss;
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *b, *prev = NULL;
+ b = local->sta_bss_hash[STA_HASH(bss->bssid)];
+ while (b) {
+ if (b == bss) {
+ if (!prev)
+ local->sta_bss_hash[STA_HASH(bss->bssid)] =
+ bss->hnext;
+ else
+ prev->hnext = bss->hnext;
+ break;
+ }
+ prev = b;
+ b = b->hnext;
+ }
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+ if (!bss)
+ return NULL;
+ atomic_inc(&bss->users);
+ atomic_inc(&bss->users);
+ memcpy(bss->bssid, bssid, ETH_ALEN);
+ bss->freq = freq;
+ if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
+ memcpy(bss->ssid, ssid, ssid_len);
+ bss->ssid_len = ssid_len;
+ }
+
+ spin_lock_bh(&local->sta_bss_lock);
+ /* TODO: order by RSSI? */
+ list_add_tail(&bss->list, &local->sta_bss_list);
+ __ieee80211_rx_bss_hash_add(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ bss = local->sta_bss_hash[STA_HASH(bssid)];
+ while (bss) {
+ if (!bss_mesh_cfg(bss) &&
+ !memcmp(bss->bssid, bssid, ETH_ALEN) &&
+ bss->freq == freq &&
+ bss->ssid_len == ssid_len &&
+ (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
+ atomic_inc(&bss->users);
+ break;
+ }
+ bss = bss->hnext;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+#ifdef CONFIG_MAC80211_MESH
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
+ while (bss) {
+ if (bss_mesh_cfg(bss) &&
+ !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
+ bss->freq == freq &&
+ mesh_id_len == bss->mesh_id_len &&
+ (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
+ mesh_id_len))) {
+ atomic_inc(&bss->users);
+ break;
+ }
+ bss = bss->hnext;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int mesh_config_len, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ if (mesh_config_len != MESH_CFG_LEN)
+ return NULL;
+
+ bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+ if (!bss)
+ return NULL;
+
+ bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
+ if (!bss->mesh_cfg) {
+ kfree(bss);
+ return NULL;
+ }
+
+ if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
+ bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
+ if (!bss->mesh_id) {
+ kfree(bss->mesh_cfg);
+ kfree(bss);
+ return NULL;
+ }
+ memcpy(bss->mesh_id, mesh_id, mesh_id_len);
+ }
+
+ atomic_inc(&bss->users);
+ atomic_inc(&bss->users);
+ memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
+ bss->mesh_id_len = mesh_id_len;
+ bss->freq = freq;
+ spin_lock_bh(&local->sta_bss_lock);
+ /* TODO: order by RSSI? */
+ list_add_tail(&bss->list, &local->sta_bss_list);
+ __ieee80211_rx_bss_hash_add(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+#endif
+
+static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
+{
+ kfree(bss->wpa_ie);
+ kfree(bss->rsn_ie);
+ kfree(bss->wmm_ie);
+ kfree(bss->ht_ie);
+ kfree(bss_mesh_id(bss));
+ kfree(bss_mesh_cfg(bss));
+ kfree(bss);
+}
+
+
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ local_bh_disable();
+ if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
+ local_bh_enable();
+ return;
+ }
+
+ __ieee80211_rx_bss_hash_del(dev, bss);
+ list_del(&bss->list);
+ spin_unlock_bh(&local->sta_bss_lock);
+ ieee80211_rx_bss_free(bss);
+}
+
+
+void ieee80211_rx_bss_list_init(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ spin_lock_init(&local->sta_bss_lock);
+ INIT_LIST_HEAD(&local->sta_bss_list);
+}
+
+
+void ieee80211_rx_bss_list_deinit(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss, *tmp;
+
+ list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
+ ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static int ieee80211_sta_join_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int res, rates, i, j;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_tx_control control;
+ struct rate_selection ratesel;
+ u8 *pos;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+ union iwreq_data wrqu;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* Remove possible STA entries from other IBSS networks. */
+ sta_info_flush_delayed(sdata);
+
+ if (local->ops->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->ops->reset_tsf(local_to_hw(local));
+ }
+ memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+ res = ieee80211_if_config(dev);
+ if (res)
+ return res;
+
+ local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+
+ sdata->drop_unencrypted = bss->capability &
+ WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+
+ res = ieee80211_set_freq(dev, bss->freq);
+
+ if (res)
+ return res;
+
+ /* Set beacon template */
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ do {
+ if (!skb)
+ break;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+ memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_BEACON);
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.beacon.beacon_int =
+ cpu_to_le16(local->hw.conf.beacon_int);
+ mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
+
+ pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ rates = bss->supp_rates_len;
+ if (rates > 8)
+ rates = 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, bss->supp_rates, rates);
+
+ if (bss->band == IEEE80211_BAND_2GHZ) {
+ pos = skb_put(skb, 2 + 1);
+ *pos++ = WLAN_EID_DS_PARAMS;
+ *pos++ = 1;
+ *pos++ = ieee80211_frequency_to_channel(bss->freq);
+ }
+
+ pos = skb_put(skb, 2 + 2);
+ *pos++ = WLAN_EID_IBSS_PARAMS;
+ *pos++ = 2;
+ /* FIX: set ATIM window based on scan results */
+ *pos++ = 0;
+ *pos++ = 0;
+
+ if (bss->supp_rates_len > 8) {
+ rates = bss->supp_rates_len - 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, &bss->supp_rates[8], rates);
+ }
+
+ memset(&control, 0, sizeof(control));
+ rate_control_get_rate(dev, sband, skb, &ratesel);
+ if (!ratesel.rate) {
+ printk(KERN_DEBUG "%s: Failed to determine TX rate "
+ "for IBSS beacon\n", dev->name);
+ break;
+ }
+ control.vif = &sdata->vif;
+ control.tx_rate = ratesel.rate;
+ if (sdata->bss_conf.use_short_preamble &&
+ ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
+ control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+ control.flags |= IEEE80211_TXCTL_NO_ACK;
+ control.retry_limit = 1;
+
+ ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
+ if (ifsta->probe_resp) {
+ mgmt = (struct ieee80211_mgmt *)
+ ifsta->probe_resp->data;
+ mgmt->frame_control =
+ IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_PROBE_RESP);
+ } else {
+ printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
+ "template for IBSS\n", dev->name);
+ }
+
+ if (local->ops->beacon_update &&
+ local->ops->beacon_update(local_to_hw(local),
+ skb, &control) == 0) {
+ printk(KERN_DEBUG "%s: Configured IBSS beacon "
+ "template\n", dev->name);
+ skb = NULL;
+ }
+
+ rates = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == bitrate)
+ rates |= BIT(j);
+ }
+ ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
+
+ ieee80211_sta_def_wmm_params(dev, bss, 1);
+ } while (0);
+
+ if (skb) {
+ printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
+ "template\n", dev->name);
+ dev_kfree_skb(skb);
+ }
+
+ ifsta->state = IEEE80211_IBSS_JOINED;
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ memset(&wrqu, 0, sizeof(wrqu));
+ memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+
+ return res;
+}
+
+u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
+ struct ieee802_11_elems *elems,
+ enum ieee80211_band band)
+{
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *bitrates;
+ size_t num_rates;
+ u64 supp_rates;
+ int i, j;
+ sband = local->hw.wiphy->bands[band];
+
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ }
+
+ bitrates = sband->bitrates;
+ num_rates = sband->n_bitrates;
+ supp_rates = 0;
+ for (i = 0; i < elems->supp_rates_len +
+ elems->ext_supp_rates_len; i++) {
+ u8 rate = 0;
+ int own_rate;
+ if (i < elems->supp_rates_len)
+ rate = elems->supp_rates[i];
+ else if (elems->ext_supp_rates)
+ rate = elems->ext_supp_rates
+ [i - elems->supp_rates_len];
+ own_rate = 5 * (rate & 0x7f);
+ for (j = 0; j < num_rates; j++)
+ if (bitrates[j].bitrate == own_rate)
+ supp_rates |= BIT(j);
+ }
+ return supp_rates;
+}
+
+
+static void ieee80211_rx_bss_info(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status,
+ int beacon)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee802_11_elems elems;
+ size_t baselen;
+ int freq, clen;
+ struct ieee80211_sta_bss *bss;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ u64 beacon_timestamp, rx_timestamp;
+ struct ieee80211_channel *channel;
+ DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mac2);
+
+ if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
+ return; /* ignore ProbeResp to foreign address */
+
+#if 0
+ printk(KERN_DEBUG "%s: RX %s from %s to %s\n",
+ dev->name, beacon ? "Beacon" : "Probe Response",
+ print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da));
+#endif
+
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+ ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id &&
+ elems.mesh_config && mesh_matches_local(&elems, dev)) {
+ u64 rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
+
+ mesh_neighbour_update(mgmt->sa, rates, dev,
+ mesh_peer_accepts_plinks(&elems, dev));
+ }
+
+ rcu_read_lock();
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
+ memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
+ (sta = sta_info_get(local, mgmt->sa))) {
+ u64 prev_rates;
+ u64 supp_rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
+
+ prev_rates = sta->supp_rates[rx_status->band];
+ sta->supp_rates[rx_status->band] &= supp_rates;
+ if (sta->supp_rates[rx_status->band] == 0) {
+ /* No matching rates - this should not really happen.
+ * Make sure that at least one rate is marked
+ * supported to avoid issues with TX rate ctrl. */
+ sta->supp_rates[rx_status->band] =
+ sdata->u.sta.supp_rates_bits[rx_status->band];
+ }
+ if (sta->supp_rates[rx_status->band] != prev_rates) {
+ printk(KERN_DEBUG "%s: updated supp_rates set for "
+ "%s based on beacon info (0x%llx & 0x%llx -> "
+ "0x%llx)\n",
+ dev->name, print_mac(mac, sta->addr),
+ (unsigned long long) prev_rates,
+ (unsigned long long) supp_rates,
+ (unsigned long long) sta->supp_rates[rx_status->band]);
+ }
+ }
+
+ rcu_read_unlock();
+
+ if (elems.ds_params && elems.ds_params_len == 1)
+ freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
+ else
+ freq = rx_status->freq;
+
+ channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq,
+ elems.ssid, elems.ssid_len);
+ if (!bss) {
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config,
+ elems.mesh_config_len, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq,
+ elems.ssid, elems.ssid_len);
+ if (!bss)
+ return;
+ } else {
+#if 0
+ /* TODO: order by RSSI? */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_move_tail(&bss->list, &local->sta_bss_list);
+ spin_unlock_bh(&local->sta_bss_lock);
+#endif
+ }
+
+ /* save the ERP value so that it is available at association time */
+ if (elems.erp_info && elems.erp_info_len >= 1) {
+ bss->erp_value = elems.erp_info[0];
+ bss->has_erp_value = 1;
+ }
+
+ if (elems.ht_cap_elem &&
+ (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
+ memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
+ if (bss->ht_ie) {
+ memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
+ elems.ht_cap_elem_len + 2);
+ bss->ht_ie_len = elems.ht_cap_elem_len + 2;
+ } else
+ bss->ht_ie_len = 0;
+ } else if (!elems.ht_cap_elem && bss->ht_ie) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = NULL;
+ bss->ht_ie_len = 0;
+ }
+
+ bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
+ bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
+
+ bss->supp_rates_len = 0;
+ if (elems.supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.supp_rates_len)
+ clen = elems.supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
+ clen);
+ bss->supp_rates_len += clen;
+ }
+ if (elems.ext_supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.ext_supp_rates_len)
+ clen = elems.ext_supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len],
+ elems.ext_supp_rates, clen);
+ bss->supp_rates_len += clen;
+ }
+
+ bss->band = rx_status->band;
+
+ bss->timestamp = beacon_timestamp;
+ bss->last_update = jiffies;
+ bss->rssi = rx_status->ssi;
+ bss->signal = rx_status->signal;
+ bss->noise = rx_status->noise;
+ if (!beacon && !bss->probe_resp)
+ bss->probe_resp = true;
+
+ /*
+ * In STA mode, the remaining parameters should not be overridden
+ * by beacons because they're not necessarily accurate there.
+ */
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ bss->probe_resp && beacon) {
+ ieee80211_rx_bss_put(dev, bss);
+ return;
+ }
+
+ if (elems.wpa &&
+ (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
+ memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
+ if (bss->wpa_ie) {
+ memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
+ bss->wpa_ie_len = elems.wpa_len + 2;
+ } else
+ bss->wpa_ie_len = 0;
+ } else if (!elems.wpa && bss->wpa_ie) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = NULL;
+ bss->wpa_ie_len = 0;
+ }
+
+ if (elems.rsn &&
+ (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
+ memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
+ if (bss->rsn_ie) {
+ memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
+ bss->rsn_ie_len = elems.rsn_len + 2;
+ } else
+ bss->rsn_ie_len = 0;
+ } else if (!elems.rsn && bss->rsn_ie) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = NULL;
+ bss->rsn_ie_len = 0;
+ }
+
+ /*
+ * Cf.
+ * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
+ *
+ * quoting:
+ *
+ * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
+ * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
+ * Alliance (September 1, 2004) is incorporated by reference herein.
+ * The inclusion of the WMM Parameters in probe responses and
+ * association responses is mandatory for WMM enabled networks. The
+ * inclusion of the WMM Parameters in beacons, however, is optional.
+ */
+
+ if (elems.wmm_param &&
+ (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
+ memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
+ if (bss->wmm_ie) {
+ memcpy(bss->wmm_ie, elems.wmm_param - 2,
+ elems.wmm_param_len + 2);
+ bss->wmm_ie_len = elems.wmm_param_len + 2;
+ } else
+ bss->wmm_ie_len = 0;
+ } else if (elems.wmm_info &&
+ (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_info_len ||
+ memcmp(bss->wmm_ie, elems.wmm_info, elems.wmm_info_len))) {
+ /* As for certain AP's Fifth bit is not set in WMM IE in
+ * beacon frames.So while parsing the beacon frame the
+ * wmm_info structure is used instead of wmm_param.
+ * wmm_info structure was never used to set bss->wmm_ie.
+ * This code fixes this problem by copying the WME
+ * information from wmm_info to bss->wmm_ie and enabling
+ * n-band association.
+ */
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = kmalloc(elems.wmm_info_len + 2, GFP_ATOMIC);
+ if (bss->wmm_ie) {
+ memcpy(bss->wmm_ie, elems.wmm_info - 2,
+ elems.wmm_info_len + 2);
+ bss->wmm_ie_len = elems.wmm_info_len + 2;
+ } else
+ bss->wmm_ie_len = 0;
+ } else if (!elems.wmm_param && !elems.wmm_info && bss->wmm_ie) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = NULL;
+ bss->wmm_ie_len = 0;
+ }
+
+ /* check if we need to merge IBSS */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
+ !local->sta_sw_scanning && !local->sta_hw_scanning &&
+ bss->capability & WLAN_CAPABILITY_IBSS &&
+ bss->freq == local->oper_channel->center_freq &&
+ elems.ssid_len == sdata->u.sta.ssid_len &&
+ memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) {
+ if (rx_status->flag & RX_FLAG_TSFT) {
+ /* in order for correct IBSS merging we need mactime
+ *
+ * since mactime is defined as the time the first data
+ * symbol of the frame hits the PHY, and the timestamp
+ * of the beacon is defined as "the time that the data
+ * symbol containing the first bit of the timestamp is
+ * transmitted to the PHY plus the transmitting STA’s
+ * delays through its local PHY from the MAC-PHY
+ * interface to its interface with the WM"
+ * (802.11 11.1.2) - equals the time this bit arrives at
+ * the receiver - we have to take into account the
+ * offset between the two.
+ * e.g: at 1 MBit that means mactime is 192 usec earlier
+ * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
+ */
+ int rate = local->hw.wiphy->bands[rx_status->band]->
+ bitrates[rx_status->rate_idx].bitrate;
+ rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate);
+ } else if (local && local->ops && local->ops->get_tsf)
+ /* second best option: get current TSF */
+ rx_timestamp = local->ops->get_tsf(local_to_hw(local));
+ else
+ /* can't merge without knowing the TSF */
+ rx_timestamp = -1LLU;
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "RX beacon SA=%s BSSID="
+ "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
+ print_mac(mac, mgmt->sa),
+ print_mac(mac2, mgmt->bssid),
+ (unsigned long long)rx_timestamp,
+ (unsigned long long)beacon_timestamp,
+ (unsigned long long)(rx_timestamp - beacon_timestamp),
+ jiffies);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ if (beacon_timestamp > rx_timestamp) {
+#ifndef CONFIG_MAC80211_IBSS_DEBUG
+ if (net_ratelimit())
+#endif
+ printk(KERN_DEBUG "%s: beacon TSF higher than "
+ "local TSF - IBSS merge with BSSID %s\n",
+ dev->name, print_mac(mac, mgmt->bssid));
+ ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss);
+ ieee80211_ibss_add_sta(dev, NULL,
+ mgmt->bssid, mgmt->sa);
+ }
+ }
+
+ ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
+}
+
+
+static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ size_t baselen;
+ struct ieee802_11_elems elems;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_conf *conf = &local->hw.conf;
+ u32 changed = 0;
+
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+ ifsta = &sdata->u.sta;
+
+ if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ return;
+
+ /* Process beacon from the current BSS */
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+
+ if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ }
+
+ /* Do not send changes to driver if we are scanning. This removes
+ * requirement that driver's bss_info_changed function needs to be
+ * atomic. */
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return;
+
+ if (elems.erp_info && elems.erp_info_len >= 1)
+ changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
+ else {
+ u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info);
+ changed |= ieee80211_handle_protect_preamb(sdata, false,
+ (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
+ }
+
+ if (elems.ht_cap_elem && elems.ht_info_elem &&
+ elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+ struct ieee80211_ht_bss_info bss_info;
+
+ ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ (struct ieee80211_ht_addt_info *)
+ elems.ht_info_elem, &bss_info);
+ changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
+ &bss_info);
+ }
+
+ ieee80211_bss_info_change_notify(sdata, changed);
+}
+
+
+static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int tx_last_beacon;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *resp;
+ u8 *pos, *end;
+ DECLARE_MAC_BUF(mac);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ DECLARE_MAC_BUF(mac2);
+ DECLARE_MAC_BUF(mac3);
+#endif
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS ||
+ ifsta->state != IEEE80211_IBSS_JOINED ||
+ len < 24 + 2 || !ifsta->probe_resp)
+ return;
+
+ if (local->ops->tx_last_beacon)
+ tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
+ else
+ tx_last_beacon = 1;
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
+ "%s (tx_last_beacon=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
+ print_mac(mac3, mgmt->bssid), tx_last_beacon);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+ if (!tx_last_beacon)
+ return;
+
+ if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
+ memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
+ return;
+
+ end = ((u8 *) mgmt) + len;
+ pos = mgmt->u.probe_req.variable;
+ if (pos[0] != WLAN_EID_SSID ||
+ pos + 2 + pos[1] > end) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
+ "from %s\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ }
+ return;
+ }
+ if (pos[1] != 0 &&
+ (pos[1] != ifsta->ssid_len ||
+ memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
+ /* Ignore ProbeReq for foreign SSID */
+ return;
+ }
+
+ /* Reply with ProbeResp */
+ skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
+ if (!skb)
+ return;
+
+ resp = (struct ieee80211_mgmt *) skb->data;
+ memcpy(resp->da, mgmt->sa, ETH_ALEN);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
+ dev->name, print_mac(mac, resp->da));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+static void ieee80211_rx_mgmt_action(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (len < IEEE80211_MIN_ACTION_SIZE)
+ return;
+
+ switch (mgmt->u.action.category) {
+ case WLAN_CATEGORY_BACK:
+ switch (mgmt->u.action.u.addba_req.action_code) {
+ case WLAN_ACTION_ADDBA_REQ:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.addba_req)))
+ break;
+ ieee80211_sta_process_addba_request(dev, mgmt, len);
+ break;
+ case WLAN_ACTION_ADDBA_RESP:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.addba_resp)))
+ break;
+ ieee80211_sta_process_addba_resp(dev, mgmt, len);
+ break;
+ case WLAN_ACTION_DELBA:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.delba)))
+ break;
+ ieee80211_sta_process_delba(dev, mgmt, len);
+ break;
+ default:
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n",
+ dev->name);
+ break;
+ }
+ break;
+ case PLINK_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_plink_frame(dev, mgmt, len, rx_status);
+ break;
+ case MESH_PATH_SEL_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_path_sel_frame(dev, mgmt, len);
+ break;
+ default:
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: Rx unknown action frame - "
+ "category=%d\n", dev->name, mgmt->u.action.category);
+ break;
+ }
+}
+
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 24)
+ goto fail;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ case IEEE80211_STYPE_PROBE_RESP:
+ case IEEE80211_STYPE_BEACON:
+ case IEEE80211_STYPE_ACTION:
+ memcpy(skb->cb, rx_status, sizeof(*rx_status));
+ case IEEE80211_STYPE_AUTH:
+ case IEEE80211_STYPE_ASSOC_RESP:
+ case IEEE80211_STYPE_REASSOC_RESP:
+ case IEEE80211_STYPE_DEAUTH:
+ case IEEE80211_STYPE_DISASSOC:
+ skb_queue_tail(&ifsta->skb_queue, skb);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ return;
+ default:
+ printk(KERN_DEBUG "%s: received unknown management frame - "
+ "stype=%d\n", dev->name,
+ (fc & IEEE80211_FCTL_STYPE) >> 4);
+ break;
+ }
+
+ fail:
+ kfree_skb(skb);
+}
+
+
+static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ rx_status = (struct ieee80211_rx_status *) skb->cb;
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
+ rx_status);
+ break;
+ case IEEE80211_STYPE_PROBE_RESP:
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
+ break;
+ case IEEE80211_STYPE_BEACON:
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
+ break;
+ case IEEE80211_STYPE_AUTH:
+ ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0);
+ break;
+ case IEEE80211_STYPE_REASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1);
+ break;
+ case IEEE80211_STYPE_DEAUTH:
+ ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_DISASSOC:
+ ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ACTION:
+ ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status);
+ break;
+ }
+
+ kfree_skb(skb);
+}
+
+
+ieee80211_rx_result
+ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 2)
+ return RX_DROP_UNUSABLE;
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL)
+ return RX_CONTINUE;
+
+ if (skb->len < 24)
+ return RX_DROP_MONITOR;
+
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+ if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt,
+ skb->len, rx_status);
+ dev_kfree_skb(skb);
+ return RX_QUEUED;
+ } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
+ rx_status);
+ dev_kfree_skb(skb);
+ return RX_QUEUED;
+ }
+ }
+ return RX_CONTINUE;
+}
+
+
+static int ieee80211_sta_active_ibss(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int active = 0;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sta->sdata == sdata &&
+ time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
+ jiffies)) {
+ active++;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+
+ return active;
+}
+
+
+static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta, *tmp;
+ LIST_HEAD(tmp_list);
+ DECLARE_MAC_BUF(mac);
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
+ if (time_after(jiffies, sta->last_rx + exp_time)) {
+ printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
+ dev->name, print_mac(mac, sta->addr));
+ __sta_info_unlink(&sta);
+ if (sta)
+ list_add(&sta->list, &tmp_list);
+ }
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+
+ list_for_each_entry_safe(sta, tmp, &tmp_list, list)
+ sta_info_destroy(sta);
+}
+
+
+static void ieee80211_sta_merge_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT);
+ if (ieee80211_sta_active_ibss(dev))
+ return;
+
+ printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
+ "IBSS networks with same SSID (merge)\n", dev->name);
+ ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
+}
+
+
+#ifdef CONFIG_MAC80211_MESH
+static void ieee80211_mesh_housekeeping(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ bool free_plinks;
+
+ ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
+ mesh_path_expire(dev);
+
+ free_plinks = mesh_plink_availables(sdata);
+ if (free_plinks != sdata->u.sta.accepting_plinks)
+ ieee80211_if_config_beacon(dev);
+
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
+}
+
+
+void ieee80211_start_mesh(struct net_device *dev)
+{
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+ ifsta->state = IEEE80211_MESH_UP;
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+#endif
+
+
+void ieee80211_sta_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(&sdata->wdev);
+
+ set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+}
+
+void ieee80211_sta_work(void *ptr)
+{
+ struct ieee80211_sub_if_data *sdata = ptr;
+ struct net_device *dev = sdata->dev;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_sta *ifsta;
+ struct sk_buff *skb;
+
+ if (!netif_running(dev))
+ return;
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) {
+ printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
+ "(type=%d)\n", dev->name, sdata->vif.type);
+ return;
+ }
+ ifsta = &sdata->u.sta;
+
+ while ((skb = skb_dequeue(&ifsta->skb_queue)))
+ ieee80211_sta_rx_queued_mgmt(dev, skb);
+
+#ifdef CONFIG_MAC80211_MESH
+ if (ifsta->preq_queue_len &&
+ time_after(jiffies,
+ ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
+ mesh_path_start_discovery(dev);
+#endif
+
+ if (ifsta->state != IEEE80211_AUTHENTICATE &&
+ ifsta->state != IEEE80211_ASSOCIATE &&
+ test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
+ if (ifsta->scan_ssid_len)
+ ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
+ else
+ ieee80211_sta_start_scan(dev, NULL, 0);
+ return;
+ }
+
+ if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
+ if (ieee80211_sta_config_auth(dev, ifsta))
+ return;
+ clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+ } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
+ return;
+
+ switch (ifsta->state) {
+ case IEEE80211_DISABLED:
+ break;
+ case IEEE80211_AUTHENTICATE:
+ ieee80211_authenticate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATE:
+ ieee80211_associate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATED:
+ ieee80211_associated(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_SEARCH:
+ ieee80211_sta_find_ibss(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_JOINED:
+ ieee80211_sta_merge_ibss(dev, ifsta);
+ break;
+#ifdef CONFIG_MAC80211_MESH
+ case IEEE80211_MESH_UP:
+ ieee80211_mesh_housekeeping(dev, ifsta);
+ break;
+#endif
+ default:
+ printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
+ ifsta->state);
+ break;
+ }
+
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+ "mixed-cell disabled - disassociate\n", dev->name);
+
+ ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
+ ieee80211_set_disassoc(dev, ifsta, 0);
+ }
+}
+
+
+static void ieee80211_sta_reset_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (local->ops->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->ops->reset_tsf(local_to_hw(local));
+ }
+
+ ifsta->wmm_last_param_set = -1; /* allow any WMM update */
+
+
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ ifsta->auth_alg = WLAN_AUTH_LEAP;
+ else
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
+ ifsta->auth_alg);
+ ifsta->auth_transaction = -1;
+ ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
+ ifsta->auth_tries = ifsta->assoc_tries = 0;
+ netif_carrier_off(dev);
+}
+
+
+void ieee80211_sta_req_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+
+ if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
+ IEEE80211_STA_AUTO_BSSID_SEL)) &&
+ (ifsta->flags & (IEEE80211_STA_SSID_SET |
+ IEEE80211_STA_AUTO_SSID_SEL))) {
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ }
+}
+
+static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
+ const char *ssid, int ssid_len)
+{
+ int tmp, hidden_ssid;
+
+ if (ssid_len == ifsta->ssid_len &&
+ !memcmp(ifsta->ssid, ssid, ssid_len))
+ return 1;
+
+ if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
+ return 0;
+
+ hidden_ssid = 1;
+ tmp = ssid_len;
+ while (tmp--) {
+ if (ssid[tmp] != '\0') {
+ hidden_ssid = 0;
+ break;
+ }
+ }
+
+ if (hidden_ssid && ifsta->ssid_len == ssid_len)
+ return 1;
+
+ if (ssid_len == 1 && ssid[0] == ' ')
+ return 1;
+
+ return 0;
+}
+
+static int ieee80211_sta_config_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_sta_bss *bss, *selected = NULL;
+ int top_rssi = 0, freq;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ freq = local->oper_channel->center_freq;
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (!(bss->capability & WLAN_CAPABILITY_ESS))
+ continue;
+
+ if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
+ IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL)) &&
+ (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
+ !!sdata->default_key))
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
+ bss->freq != freq)
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
+ memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
+ !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
+ continue;
+
+ if (!selected || top_rssi < bss->rssi) {
+ selected = bss;
+ top_rssi = bss->rssi;
+ }
+ }
+ if (selected)
+ atomic_inc(&selected->users);
+ spin_unlock_bh(&local->sta_bss_lock);
+
+ if (selected) {
+ ieee80211_set_freq(dev, selected->freq);
+ if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
+ ieee80211_sta_set_ssid(dev, selected->ssid,
+ selected->ssid_len);
+ ieee80211_sta_set_bssid(dev, selected->bssid);
+ ieee80211_sta_def_wmm_params(dev, selected, 0);
+ ieee80211_rx_bss_put(dev, selected);
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ ieee80211_sta_reset_auth(dev, ifsta);
+ return 0;
+ } else {
+ if (ifsta->state != IEEE80211_AUTHENTICATE) {
+ if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
+ ieee80211_sta_start_scan(dev, NULL, 0);
+ else
+ ieee80211_sta_start_scan(dev, ifsta->ssid,
+ ifsta->ssid_len);
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+ } else
+ ifsta->state = IEEE80211_DISABLED;
+ }
+ return -1;
+}
+
+
+static int ieee80211_sta_create_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_supported_band *sband;
+ u8 bssid[ETH_ALEN], *pos;
+ int i;
+ int ret;
+ DECLARE_MAC_BUF(mac);
+
+#if 0
+ /* Easier testing, use fixed BSSID. */
+ memset(bssid, 0xfe, ETH_ALEN);
+#else
+ /* Generate random, not broadcast, locally administered BSSID. Mix in
+ * own MAC address to make sure that devices that do not have proper
+ * random number generator get different BSSID. */
+ get_random_bytes(bssid, ETH_ALEN);
+ for (i = 0; i < ETH_ALEN; i++)
+ bssid[i] ^= dev->dev_addr[i];
+ bssid[0] &= ~0x01;
+ bssid[0] |= 0x02;
+#endif
+
+ printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
+ dev->name, print_mac(mac, bssid));
+
+ bss = ieee80211_rx_bss_add(dev, bssid,
+ local->hw.conf.channel->center_freq,
+ sdata->u.sta.ssid, sdata->u.sta.ssid_len);
+ if (!bss)
+ return -ENOMEM;
+
+ bss->band = local->hw.conf.channel->band;
+ sband = local->hw.wiphy->bands[bss->band];
+
+ if (local->hw.conf.beacon_int == 0)
+ local->hw.conf.beacon_int = 10000;
+ bss->beacon_int = local->hw.conf.beacon_int;
+ bss->last_update = jiffies;
+ bss->capability = WLAN_CAPABILITY_IBSS;
+ if (sdata->default_key) {
+ bss->capability |= WLAN_CAPABILITY_PRIVACY;
+ } else
+ sdata->drop_unencrypted = 0;
+ bss->supp_rates_len = sband->n_bitrates;
+ pos = bss->supp_rates;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ ret = ieee80211_sta_join_ibss(dev, ifsta, bss);
+ ieee80211_rx_bss_put(dev, bss);
+ return ret;
+}
+
+
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ int found = 0;
+ u8 bssid[ETH_ALEN];
+ int active_ibss;
+ DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mac2);
+
+ if (ifsta->ssid_len == 0)
+ return -EINVAL;
+
+ active_ibss = ieee80211_sta_active_ibss(dev);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
+ dev->name, active_ibss);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (ifsta->ssid_len != bss->ssid_len ||
+ memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
+ || !(bss->capability & WLAN_CAPABILITY_IBSS))
+ continue;
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG " bssid=%s found\n",
+ print_mac(mac, bss->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ memcpy(bssid, bss->bssid, ETH_ALEN);
+ found = 1;
+ if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
+ break;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ if (found)
+ printk(KERN_DEBUG " sta_find_ibss: selected %s current "
+ "%s\n", print_mac(mac, bssid),
+ print_mac(mac2, ifsta->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
+ (bss = ieee80211_rx_bss_get(dev, bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len))) {
+ int ret;
+ printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
+ " based on configured SSID\n",
+ dev->name, print_mac(mac, bssid));
+ ret = ieee80211_sta_join_ibss(dev, ifsta, bss);
+ ieee80211_rx_bss_put(dev, bss);
+ return ret;
+ }
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG " did not try to join ibss\n");
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+ /* Selected IBSS not found in current scan results - try to scan */
+ if (ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)) {
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_IBSS_MERGE_INTERVAL);
+ } else if (time_after(jiffies, local->last_scan_completed +
+ IEEE80211_SCAN_INTERVAL)) {
+ printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
+ "join\n", dev->name);
+ return ieee80211_sta_req_scan(dev, ifsta->ssid,
+ ifsta->ssid_len);
+ } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
+ int interval = IEEE80211_SCAN_INTERVAL;
+
+ if (time_after(jiffies, ifsta->ibss_join_req +
+ IEEE80211_IBSS_JOIN_TIMEOUT)) {
+ if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
+ (!(local->oper_channel->flags &
+ IEEE80211_CHAN_NO_IBSS)))
+ return ieee80211_sta_create_ibss(dev, ifsta);
+ if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on"
+ " %d MHz\n", dev->name,
+ local->hw.conf.channel->center_freq);
+ }
+
+ /* No IBSS found - decrease scan interval and continue
+ * scanning. */
+ interval = IEEE80211_SCAN_INTERVAL_SLOW;
+ }
+
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ mod_timer(&ifsta->timer, jiffies + interval);
+ return 0;
+ }
+
+ return 0;
+}
+
+
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta;
+
+ if (len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ ifsta = &sdata->u.sta;
+
+ if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
+ ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ memcpy(ifsta->ssid, ssid, len);
+ memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
+ ifsta->ssid_len = len;
+
+ if (len)
+ ifsta->flags |= IEEE80211_STA_SSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_SSID_SET;
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
+ ifsta->ibss_join_req = jiffies;
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ return ieee80211_sta_find_ibss(dev, ifsta);
+ }
+ return 0;
+}
+
+
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
+ *len = ifsta->ssid_len;
+ return 0;
+}
+
+
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ int res;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+ memcpy(ifsta->bssid, bssid, ETH_ALEN);
+ res = ieee80211_if_config(dev);
+ if (res) {
+ printk(KERN_DEBUG "%s: Failed to config new BSSID to "
+ "the low-level driver\n", dev->name);
+ return res;
+ }
+ }
+
+ if (is_valid_ether_addr(bssid))
+ ifsta->flags |= IEEE80211_STA_BSSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
+
+ return 0;
+}
+
+
+static void ieee80211_send_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ int powersave)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ u16 fc;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
+ "frame\n", sdata->dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(nullfunc, 0, 24);
+ fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS;
+ if (powersave)
+ fc |= IEEE80211_FCTL_PM;
+ nullfunc->frame_control = cpu_to_le16(fc);
+ memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
+
+ ieee80211_sta_tx(sdata->dev, skb, 0);
+}
+
+
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+
+void ieee80211_scan_completed(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct net_device *dev = local->scan_dev;
+ struct ieee80211_sub_if_data *sdata;
+ union iwreq_data wrqu;
+
+ local->last_scan_completed = jiffies;
+ memset(&wrqu, 0, sizeof(wrqu));
+ wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+
+ if (local->sta_hw_scanning) {
+ local->sta_hw_scanning = 0;
+ if (ieee80211_hw_config(local))
+ printk(KERN_DEBUG "%s: failed to restore operational "
+ "channel after scan\n", dev->name);
+ /* Restart STA timer for HW scan case */
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ ieee80211_restart_sta_timer(sdata);
+ rcu_read_unlock();
+
+ goto done;
+ }
+
+ local->sta_sw_scanning = 0;
+ if (ieee80211_hw_config(local))
+ printk(KERN_DEBUG "%s: failed to restore operational "
+ "channel after scan\n", dev->name);
+
+
+ netif_tx_lock_bh(local->mdev);
+ local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
+ local->ops->configure_filter(local_to_hw(local),
+ FIF_BCN_PRBRESP_PROMISC,
+ &local->filter_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+
+ netif_tx_unlock_bh(local->mdev);
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ /* No need to wake the master device. */
+ if (sdata->dev == local->mdev)
+ continue;
+
+ /* Tell AP we're back */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
+ ieee80211_send_nullfunc(local, sdata, 0);
+
+ ieee80211_restart_sta_timer(sdata);
+
+ netif_wake_queue(sdata->dev);
+ }
+ rcu_read_unlock();
+
+done:
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
+ (!ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)))
+ ieee80211_sta_find_ibss(dev, ifsta);
+ }
+}
+EXPORT_SYMBOL(ieee80211_scan_completed);
+
+void ieee80211_sta_scan_work(void *l)
+{
+ struct ieee80211_local *local = l;
+ struct net_device *dev = local->scan_dev;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_channel *chan;
+ int skip;
+ unsigned long next_delay = 0;
+
+ if (!local->sta_sw_scanning)
+ return;
+
+ switch (local->scan_state) {
+ case SCAN_SET_CHANNEL:
+ /*
+ * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
+ * after we successfully scanned the last channel of the last
+ * band (and the last band is supported by the hw)
+ */
+ if (local->scan_band < IEEE80211_NUM_BANDS)
+ sband = local->hw.wiphy->bands[local->scan_band];
+ else
+ sband = NULL;
+
+ /*
+ * If we are at an unsupported band and have more bands
+ * left to scan, advance to the next supported one.
+ */
+ while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
+ local->scan_band++;
+ sband = local->hw.wiphy->bands[local->scan_band];
+ local->scan_channel_idx = 0;
+ }
+
+ /* if no more bands/channels left, complete scan */
+ if (!sband || local->scan_channel_idx >= sband->n_channels) {
+ ieee80211_scan_completed(local_to_hw(local));
+ return;
+ }
+ skip = 0;
+ chan = &sband->channels[local->scan_channel_idx];
+
+ if (chan->flags & IEEE80211_CHAN_DISABLED ||
+ (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ chan->flags & IEEE80211_CHAN_NO_IBSS))
+ skip = 1;
+
+ if (!skip) {
+ local->scan_channel = chan;
+ if (ieee80211_hw_config(local)) {
+ printk(KERN_DEBUG "%s: failed to set freq to "
+ "%d MHz for scan\n", dev->name,
+ chan->center_freq);
+ skip = 1;
+ }
+ }
+
+ /* advance state machine to next channel/band */
+ local->scan_channel_idx++;
+ if (local->scan_channel_idx >= sband->n_channels) {
+ /*
+ * scan_band may end up == IEEE80211_NUM_BANDS, but
+ * we'll catch that case above and complete the scan
+ * if that is the case.
+ */
+ local->scan_band++;
+ local->scan_channel_idx = 0;
+ }
+
+ if (skip)
+ break;
+
+ next_delay = IEEE80211_PROBE_DELAY +
+ usecs_to_jiffies(local->hw.channel_change_time);
+ local->scan_state = SCAN_SEND_PROBE;
+ break;
+ case SCAN_SEND_PROBE:
+ next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+ local->scan_state = SCAN_SET_CHANNEL;
+
+ if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ break;
+ ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+ local->scan_ssid_len);
+ next_delay = IEEE80211_CHANNEL_TIME;
+ break;
+ }
+
+ if (local->sta_sw_scanning)
+ queue_delayed_work(local->hw.workqueue, &local->scan_work,
+ next_delay);
+}
+
+
+static int ieee80211_sta_start_scan(struct net_device *dev,
+ u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+
+ if (ssid_len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
+ * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
+ * BSSID: MACAddress
+ * SSID
+ * ScanType: ACTIVE, PASSIVE
+ * ProbeDelay: delay (in microseconds) to be used prior to transmitting
+ * a Probe frame during active scanning
+ * ChannelList
+ * MinChannelTime (>= ProbeDelay), in TU
+ * MaxChannelTime: (>= MinChannelTime), in TU
+ */
+
+ /* MLME-SCAN.confirm
+ * BSSDescriptionSet
+ * ResultCode: SUCCESS, INVALID_PARAMETERS
+ */
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning) {
+ if (local->scan_dev == dev)
+ return 0;
+ return -EBUSY;
+ }
+
+ if (local->ops->hw_scan) {
+ int rc = local->ops->hw_scan(local_to_hw(local),
+ ssid, ssid_len);
+ if (!rc) {
+ local->sta_hw_scanning = 1;
+ local->scan_dev = dev;
+ }
+ return rc;
+ }
+
+ local->sta_sw_scanning = 1;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ /* Don't stop the master interface, otherwise we can't transmit
+ * probes! */
+ if (sdata->dev == local->mdev)
+ continue;
+
+ netif_stop_queue(sdata->dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
+ ieee80211_send_nullfunc(local, sdata, 1);
+ }
+ rcu_read_unlock();
+
+ if (ssid) {
+ local->scan_ssid_len = ssid_len;
+ memcpy(local->scan_ssid, ssid, ssid_len);
+ } else
+ local->scan_ssid_len = 0;
+ local->scan_state = SCAN_SET_CHANNEL;
+ local->scan_channel_idx = 0;
+ local->scan_band = IEEE80211_BAND_2GHZ;
+ local->scan_dev = dev;
+
+ netif_tx_lock_bh(local->mdev);
+ local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
+ local->ops->configure_filter(local_to_hw(local),
+ FIF_BCN_PRBRESP_PROMISC,
+ &local->filter_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+ netif_tx_unlock_bh(local->mdev);
+
+ /* TODO: start scan as soon as all nullfunc frames are ACKed */
+ queue_delayed_work(local->hw.workqueue, &local->scan_work,
+ IEEE80211_CHANNEL_TIME);
+
+ return 0;
+}
+
+
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return ieee80211_sta_start_scan(dev, ssid, ssid_len);
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning) {
+ if (local->scan_dev == dev)
+ return 0;
+ return -EBUSY;
+ }
+
+ ifsta->scan_ssid_len = ssid_len;
+ if (ssid_len)
+ memcpy(ifsta->scan_ssid, ssid, ssid_len);
+ set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ return 0;
+}
+
+static char *
+ieee80211_sta_scan_result(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ char *current_ev, char *end_buf)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_event iwe;
+
+ if (time_after(jiffies,
+ bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
+ return current_ev;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_ADDR_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWESSID;
+ if (bss_mesh_cfg(bss)) {
+ iwe.u.data.length = bss_mesh_id_len(bss);
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss_mesh_id(bss));
+ } else {
+ iwe.u.data.length = bss->ssid_len;
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->ssid);
+ }
+
+ if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+ || bss_mesh_cfg(bss)) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWMODE;
+ if (bss_mesh_cfg(bss))
+ iwe.u.mode = IW_MODE_MESH;
+ else if (bss->capability & WLAN_CAPABILITY_ESS)
+ iwe.u.mode = IW_MODE_MASTER;
+ else
+ iwe.u.mode = IW_MODE_ADHOC;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_UINT_LEN);
+ }
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
+ iwe.u.freq.e = 0;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = bss->freq;
+ iwe.u.freq.e = 6;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVQUAL;
+ iwe.u.qual.qual = bss->signal;
+ iwe.u.qual.level = bss->rssi;
+ iwe.u.qual.noise = bss->noise;
+ iwe.u.qual.updated = local->wstats_flags;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_QUAL_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWENCODE;
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
+
+ if (bss && bss->wpa_ie) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->wpa_ie_len;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->wpa_ie);
+ }
+
+ if (bss && bss->rsn_ie) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->rsn_ie_len;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->rsn_ie);
+ }
+
+ if (bss && bss->supp_rates_len > 0) {
+ /* display all supported rates in readable format */
+ char *p = current_ev + IW_EV_LCP_LEN;
+ int i;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWRATE;
+ /* Those two flags are ignored... */
+ iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ iwe.u.bitrate.value = ((bss->supp_rates[i] &
+ 0x7f) * 500000);
+ p = iwe_stream_add_value(current_ev, p,
+ end_buf, &iwe, IW_EV_PARAM_LEN);
+ }
+ current_ev = p;
+ }
+
+ if (bss) {
+ char *buf;
+ buf = kmalloc(30, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ if (bss_mesh_cfg(bss)) {
+ char *buf;
+ u8 *cfg = bss_mesh_cfg(bss);
+ buf = kmalloc(50, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "Mesh network (version %d)", cfg[0]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Protocol ID: "
+ "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+ cfg[4]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Metric ID: "
+ "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+ cfg[8]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Congestion Control Mode ID: "
+ "0x%02X%02X%02X%02X", cfg[9], cfg[10],
+ cfg[11], cfg[12]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Channel Precedence: "
+ "0x%02X%02X%02X%02X", cfg[13], cfg[14],
+ cfg[15], cfg[16]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ return current_ev;
+}
+
+
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ char *current_ev = buf;
+ char *end_buf = buf + len;
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
+ spin_unlock_bh(&local->sta_bss_lock);
+ return -E2BIG;
+ }
+ current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
+ end_buf);
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return current_ev - buf;
+}
+
+
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ kfree(ifsta->extra_ie);
+ if (len == 0) {
+ ifsta->extra_ie = NULL;
+ ifsta->extra_ie_len = 0;
+ return 0;
+ }
+ ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
+ if (!ifsta->extra_ie) {
+ ifsta->extra_ie_len = 0;
+ return -ENOMEM;
+ }
+ memcpy(ifsta->extra_ie, ie, len);
+ ifsta->extra_ie_len = len;
+ return 0;
+}
+
+
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+ struct sk_buff *skb, u8 *bssid,
+ u8 *addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ DECLARE_MAC_BUF(mac);
+
+ /* TODO: Could consider removing the least recently used entry and
+ * allow new one to be added. */
+ if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: No room for a new IBSS STA "
+ "entry %s\n", dev->name, print_mac(mac, addr));
+ }
+ return NULL;
+ }
+
+ printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
+ wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
+
+ sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
+ if (!sta)
+ return NULL;
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ sta->supp_rates[local->hw.conf.channel->band] =
+ sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
+
+ rate_control_rate_init(sta, local);
+
+ if (sta_info_insert(sta))
+ return NULL;
+
+ return sta;
+}
+
+
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ return -EINVAL;
+
+ ieee80211_send_deauth(dev, ifsta, reason);
+ ieee80211_set_disassoc(dev, ifsta, 1);
+ return 0;
+}
+
+
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return -EINVAL;
+
+ if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
+ return -1;
+
+ ieee80211_send_disassoc(dev, ifsta, reason);
+ ieee80211_set_disassoc(dev, ifsta, 0);
+ return 0;
+}
+
+void ieee80211_notify_mac(struct ieee80211_hw *hw,
+ enum ieee80211_notification_types notif_type)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata;
+
+ switch (notif_type) {
+ case IEEE80211_NOTIFY_RE_ASSOC:
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
+ ieee80211_sta_req_auth(sdata->dev,
+ &sdata->u.sta);
+ }
+
+ }
+ rcu_read_unlock();
+ break;
+ }
+}
+EXPORT_SYMBOL(ieee80211_notify_mac);
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
new file mode 100644
index 0000000..841df93
--- /dev/null
+++ b/net/mac80211/rate.c
@@ -0,0 +1,249 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/rtnetlink.h>
+#include "rate.h"
+#include "ieee80211_i.h"
+
+struct rate_control_alg {
+ struct list_head list;
+ struct rate_control_ops *ops;
+};
+
+static LIST_HEAD(rate_ctrl_algs);
+static DEFINE_MUTEX(rate_ctrl_mutex);
+
+static char *ieee80211_default_rc_algo = CONFIG_MAC80211_RC_DEFAULT;
+module_param(ieee80211_default_rc_algo, charp, 0644);
+MODULE_PARM_DESC(ieee80211_default_rc_algo,
+ "Default rate control algorithm for mac80211 to use");
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops)
+{
+ struct rate_control_alg *alg;
+
+ if (!ops->name)
+ return -EINVAL;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (!strcmp(alg->ops->name, ops->name)) {
+ /* don't register an algorithm twice */
+ WARN_ON(1);
+ mutex_unlock(&rate_ctrl_mutex);
+ return -EALREADY;
+ }
+ }
+
+ alg = kzalloc(sizeof(*alg), GFP_KERNEL);
+ if (alg == NULL) {
+ mutex_unlock(&rate_ctrl_mutex);
+ return -ENOMEM;
+ }
+ alg->ops = ops;
+
+ list_add_tail(&alg->list, &rate_ctrl_algs);
+ mutex_unlock(&rate_ctrl_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL(ieee80211_rate_control_register);
+
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
+{
+ struct rate_control_alg *alg;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (alg->ops == ops) {
+ list_del(&alg->list);
+ kfree(alg);
+ break;
+ }
+ }
+ mutex_unlock(&rate_ctrl_mutex);
+}
+EXPORT_SYMBOL(ieee80211_rate_control_unregister);
+
+static struct rate_control_ops *
+ieee80211_try_rate_control_ops_get(const char *name)
+{
+ struct rate_control_alg *alg;
+ struct rate_control_ops *ops = NULL;
+
+ if (!name)
+ return NULL;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (!strcmp(alg->ops->name, name))
+ if (try_module_get(alg->ops->module)) {
+ ops = alg->ops;
+ break;
+ }
+ }
+ mutex_unlock(&rate_ctrl_mutex);
+ return ops;
+}
+
+/* Get the rate control algorithm. */
+static struct rate_control_ops *
+ieee80211_rate_control_ops_get(const char *name)
+{
+ struct rate_control_ops *ops;
+ const char *alg_name;
+
+ if (!name)
+ alg_name = ieee80211_default_rc_algo;
+ else
+ alg_name = name;
+
+ ops = ieee80211_try_rate_control_ops_get(alg_name);
+ if (!ops) {
+ request_module("rc80211_%s", alg_name);
+ ops = ieee80211_try_rate_control_ops_get(alg_name);
+ }
+ if (!ops && name)
+ /* try default if specific alg requested but not found */
+ ops = ieee80211_try_rate_control_ops_get(ieee80211_default_rc_algo);
+
+ /* try built-in one if specific alg requested but not found */
+ if (!ops && strlen(CONFIG_MAC80211_RC_DEFAULT))
+ ops = ieee80211_try_rate_control_ops_get(CONFIG_MAC80211_RC_DEFAULT);
+
+ return ops;
+}
+
+static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
+{
+ module_put(ops->module);
+}
+
+struct rate_control_ref *rate_control_alloc(const char *name,
+ struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref;
+
+ ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
+ if (!ref)
+ goto fail_ref;
+ kref_init(&ref->kref);
+ ref->ops = ieee80211_rate_control_ops_get(name);
+ if (!ref->ops)
+ goto fail_ops;
+ ref->priv = ref->ops->alloc(local);
+ if (!ref->priv)
+ goto fail_priv;
+ return ref;
+
+fail_priv:
+ ieee80211_rate_control_ops_put(ref->ops);
+fail_ops:
+ kfree(ref);
+fail_ref:
+ return NULL;
+}
+
+static void rate_control_release(struct kref *kref)
+{
+ struct rate_control_ref *ctrl_ref;
+
+ ctrl_ref = container_of(kref, struct rate_control_ref, kref);
+ ctrl_ref->ops->free(ctrl_ref->priv);
+ ieee80211_rate_control_ops_put(ctrl_ref->ops);
+ kfree(ctrl_ref);
+}
+
+void rate_control_get_rate(struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct rate_control_ref *ref = local->rate_ctrl;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta;
+ int i;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, hdr->addr1);
+
+ memset(sel, 0, sizeof(struct rate_selection));
+
+ ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
+
+ /* Select a non-ERP backup rate. */
+ if (!sel->nonerp) {
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *rate = &sband->bitrates[i];
+ if (sel->rate->bitrate < rate->bitrate)
+ break;
+
+ if (rate_supported(sta, sband->band, i) &&
+ !(rate->flags & IEEE80211_RATE_ERP_G))
+ sel->nonerp = rate;
+ }
+ }
+
+ rcu_read_unlock();
+}
+
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
+{
+ kref_get(&ref->kref);
+ return ref;
+}
+
+void rate_control_put(struct rate_control_ref *ref)
+{
+ kref_put(&ref->kref, rate_control_release);
+}
+
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+ const char *name)
+{
+ struct rate_control_ref *ref, *old;
+
+ ASSERT_RTNL();
+ if (local->open_count || netif_running(local->mdev))
+ return -EBUSY;
+
+ ref = rate_control_alloc(name, local);
+ if (!ref) {
+ printk(KERN_WARNING "%s: Failed to select rate control "
+ "algorithm\n", wiphy_name(local->hw.wiphy));
+ return -ENOENT;
+ }
+
+ old = local->rate_ctrl;
+ local->rate_ctrl = ref;
+ if (old) {
+ rate_control_put(old);
+ sta_info_flush(local, NULL);
+ }
+
+ printk(KERN_DEBUG "%s: Selected rate control "
+ "algorithm '%s'\n", wiphy_name(local->hw.wiphy),
+ ref->ops->name);
+
+
+ return 0;
+}
+
+void rate_control_deinitialize(struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref;
+
+ ref = local->rate_ctrl;
+ local->rate_ctrl = NULL;
+ rate_control_put(ref);
+}
+
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
new file mode 100644
index 0000000..5b45f33
--- /dev/null
+++ b/net/mac80211/rate.h
@@ -0,0 +1,189 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_RATE_H
+#define IEEE80211_RATE_H
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/kref.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+/* TODO: kdoc */
+struct rate_selection {
+ /* Selected transmission rate */
+ struct ieee80211_rate *rate;
+ /* Non-ERP rate to use if mac80211 decides it cannot use an ERP rate */
+ struct ieee80211_rate *nonerp;
+ /* probe with this rate, or NULL for no probing */
+ struct ieee80211_rate *probe;
+};
+
+struct rate_control_ops {
+ struct module *module;
+ const char *name;
+ void (*tx_status)(void *priv, struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status);
+ void (*get_rate)(void *priv, struct net_device *dev,
+ struct ieee80211_supported_band *band,
+ struct sk_buff *skb,
+ struct rate_selection *sel);
+ void (*rate_init)(void *priv, void *priv_sta,
+ struct ieee80211_local *local, struct sta_info *sta);
+ void (*clear)(void *priv);
+
+ void *(*alloc)(struct ieee80211_local *local);
+ void (*free)(void *priv);
+ void *(*alloc_sta)(void *priv, gfp_t gfp);
+ void (*free_sta)(void *priv, void *priv_sta);
+
+ int (*add_attrs)(void *priv, struct kobject *kobj);
+ void (*remove_attrs)(void *priv, struct kobject *kobj);
+ void (*add_sta_debugfs)(void *priv, void *priv_sta,
+ struct dentry *dir);
+ void (*remove_sta_debugfs)(void *priv, void *priv_sta);
+};
+
+struct rate_control_ref {
+ struct rate_control_ops *ops;
+ void *priv;
+ struct kref kref;
+};
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops);
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+
+/* Get a reference to the rate control algorithm. If `name' is NULL, get the
+ * first available algorithm. */
+struct rate_control_ref *rate_control_alloc(const char *name,
+ struct ieee80211_local *local);
+void rate_control_get_rate(struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel);
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
+void rate_control_put(struct rate_control_ref *ref);
+
+static inline void rate_control_tx_status(struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct rate_control_ref *ref = local->rate_ctrl;
+
+ ref->ops->tx_status(ref->priv, dev, skb, status);
+}
+
+
+static inline void rate_control_rate_init(struct sta_info *sta,
+ struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
+}
+
+
+static inline void rate_control_clear(struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref = local->rate_ctrl;
+ ref->ops->clear(ref->priv);
+}
+
+static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
+ gfp_t gfp)
+{
+ return ref->ops->alloc_sta(ref->priv, gfp);
+}
+
+static inline void rate_control_free_sta(struct rate_control_ref *ref,
+ void *priv)
+{
+ ref->ops->free_sta(ref->priv, priv);
+}
+
+static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
+ ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
+ sta->debugfs.dir);
+#endif
+}
+
+static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ if (ref->ops->remove_sta_debugfs)
+ ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
+#endif
+}
+
+static inline int rate_supported(struct sta_info *sta,
+ enum ieee80211_band band,
+ int index)
+{
+ return (sta == NULL || sta->supp_rates[band] & BIT(index));
+}
+
+static inline int
+rate_lowest_index(struct ieee80211_local *local,
+ struct ieee80211_supported_band *sband,
+ struct sta_info *sta)
+{
+ int i;
+
+ for (i = 0; i < sband->n_bitrates; i++)
+ if (rate_supported(sta, sband->band, i))
+ return i;
+
+ /* warn when we cannot find a rate. */
+ WARN_ON(1);
+
+ return 0;
+}
+
+static inline struct ieee80211_rate *
+rate_lowest(struct ieee80211_local *local,
+ struct ieee80211_supported_band *sband,
+ struct sta_info *sta)
+{
+ return &sband->bitrates[rate_lowest_index(local, sband, sta)];
+}
+
+
+/* functions for rate control related to a device */
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+ const char *name);
+void rate_control_deinitialize(struct ieee80211_local *local);
+
+
+/* Rate control algorithms */
+#if defined(RC80211_PID_COMPILE) || \
+ (defined(CONFIG_MAC80211_RC_PID) && \
+ !defined(CONFIG_MAC80211_RC_PID_MODULE))
+extern int rc80211_pid_init(void);
+extern void rc80211_pid_exit(void);
+#else
+static inline int rc80211_pid_init(void)
+{
+ return 0;
+}
+static inline void rc80211_pid_exit(void)
+{
+}
+#endif
+
+#endif /* IEEE80211_RATE_H */
diff --git a/net/mac80211/rc80211_pid.h b/net/mac80211/rc80211_pid.h
new file mode 100644
index 0000000..4ea7b97
--- /dev/null
+++ b/net/mac80211/rc80211_pid.h
@@ -0,0 +1,280 @@
+/*
+ * Copyright 2007, Mattias Nissler <mattias.nissler@gmx.de>
+ * Copyright 2007, Stefano Brivio <stefano.brivio@polimi.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef RC80211_PID_H
+#define RC80211_PID_H
+
+/* Sampling period for measuring percentage of failed frames in ms. */
+#define RC_PID_INTERVAL 125
+
+/* Exponential averaging smoothness (used for I part of PID controller) */
+#define RC_PID_SMOOTHING_SHIFT 3
+#define RC_PID_SMOOTHING (1 << RC_PID_SMOOTHING_SHIFT)
+
+/* Sharpening factor (used for D part of PID controller) */
+#define RC_PID_SHARPENING_FACTOR 0
+#define RC_PID_SHARPENING_DURATION 0
+
+/* Fixed point arithmetic shifting amount. */
+#define RC_PID_ARITH_SHIFT 8
+
+/* Fixed point arithmetic factor. */
+#define RC_PID_ARITH_FACTOR (1 << RC_PID_ARITH_SHIFT)
+
+/* Proportional PID component coefficient. */
+#define RC_PID_COEFF_P 15
+/* Integral PID component coefficient. */
+#define RC_PID_COEFF_I 9
+/* Derivative PID component coefficient. */
+#define RC_PID_COEFF_D 15
+
+/* Target failed frames rate for the PID controller. NB: This effectively gives
+ * maximum failed frames percentage we're willing to accept. If the wireless
+ * link quality is good, the controller will fail to adjust failed frames
+ * percentage to the target. This is intentional.
+ */
+#define RC_PID_TARGET_PF 14
+
+/* Rate behaviour normalization quantity over time. */
+#define RC_PID_NORM_OFFSET 3
+
+/* Push high rates right after loading. */
+#define RC_PID_FAST_START 0
+
+/* Arithmetic right shift for positive and negative values for ISO C. */
+#define RC_PID_DO_ARITH_RIGHT_SHIFT(x, y) \
+ (x) < 0 ? -((-(x)) >> (y)) : (x) >> (y)
+
+enum rc_pid_event_type {
+ RC_PID_EVENT_TYPE_TX_STATUS,
+ RC_PID_EVENT_TYPE_RATE_CHANGE,
+ RC_PID_EVENT_TYPE_TX_RATE,
+ RC_PID_EVENT_TYPE_PF_SAMPLE,
+};
+
+union rc_pid_event_data {
+ /* RC_PID_EVENT_TX_STATUS */
+ struct {
+ struct ieee80211_tx_status tx_status;
+ };
+ /* RC_PID_EVENT_TYPE_RATE_CHANGE */
+ /* RC_PID_EVENT_TYPE_TX_RATE */
+ struct {
+ int index;
+ int rate;
+ };
+ /* RC_PID_EVENT_TYPE_PF_SAMPLE */
+ struct {
+ s32 pf_sample;
+ s32 prop_err;
+ s32 int_err;
+ s32 der_err;
+ };
+};
+
+struct rc_pid_event {
+ /* The time when the event occured */
+ unsigned long timestamp;
+
+ /* Event ID number */
+ unsigned int id;
+
+ /* Type of event */
+ enum rc_pid_event_type type;
+
+ /* type specific data */
+ union rc_pid_event_data data;
+};
+
+/* Size of the event ring buffer. */
+#define RC_PID_EVENT_RING_SIZE 32
+
+struct rc_pid_event_buffer {
+ /* Counter that generates event IDs */
+ unsigned int ev_count;
+
+ /* Ring buffer of events */
+ struct rc_pid_event ring[RC_PID_EVENT_RING_SIZE];
+
+ /* Index to the entry in events_buf to be reused */
+ unsigned int next_entry;
+
+ /* Lock that guards against concurrent access to this buffer struct */
+ spinlock_t lock;
+
+ /* Wait queue for poll/select and blocking I/O */
+ wait_queue_head_t waitqueue;
+};
+
+struct rc_pid_events_file_info {
+ /* The event buffer we read */
+ struct rc_pid_event_buffer *events;
+
+ /* The entry we have should read next */
+ unsigned int next_entry;
+};
+
+/**
+ * struct rc_pid_debugfs_entries - tunable parameters
+ *
+ * Algorithm parameters, tunable via debugfs.
+ * @dir: the debugfs directory for a specific phy
+ * @target: target percentage for failed frames
+ * @sampling_period: error sampling interval in milliseconds
+ * @coeff_p: absolute value of the proportional coefficient
+ * @coeff_i: absolute value of the integral coefficient
+ * @coeff_d: absolute value of the derivative coefficient
+ * @smoothing_shift: absolute value of the integral smoothing factor (i.e.
+ * amount of smoothing introduced by the exponential moving average)
+ * @sharpen_factor: absolute value of the derivative sharpening factor (i.e.
+ * amount of emphasis given to the derivative term after low activity
+ * events)
+ * @sharpen_duration: duration of the sharpening effect after the detected low
+ * activity event, relative to sampling_period
+ * @norm_offset: amount of normalization periodically performed on the learnt
+ * rate behaviour values (lower means we should trust more what we learnt
+ * about behaviour of rates, higher means we should trust more the natural
+ * ordering of rates)
+ */
+struct rc_pid_debugfs_entries {
+ struct dentry *dir;
+ struct dentry *target;
+ struct dentry *sampling_period;
+ struct dentry *coeff_p;
+ struct dentry *coeff_i;
+ struct dentry *coeff_d;
+ struct dentry *smoothing_shift;
+ struct dentry *sharpen_factor;
+ struct dentry *sharpen_duration;
+ struct dentry *norm_offset;
+};
+
+void rate_control_pid_event_tx_status(struct rc_pid_event_buffer *buf,
+ struct ieee80211_tx_status *stat);
+
+void rate_control_pid_event_rate_change(struct rc_pid_event_buffer *buf,
+ int index, int rate);
+
+void rate_control_pid_event_tx_rate(struct rc_pid_event_buffer *buf,
+ int index, int rate);
+
+void rate_control_pid_event_pf_sample(struct rc_pid_event_buffer *buf,
+ s32 pf_sample, s32 prop_err,
+ s32 int_err, s32 der_err);
+
+void rate_control_pid_add_sta_debugfs(void *priv, void *priv_sta,
+ struct dentry *dir);
+
+void rate_control_pid_remove_sta_debugfs(void *priv, void *priv_sta);
+
+struct rc_pid_sta_info {
+ unsigned long last_change;
+ unsigned long last_sample;
+
+ u32 tx_num_failed;
+ u32 tx_num_xmit;
+
+ /* Average failed frames percentage error (i.e. actual vs. target
+ * percentage), scaled by RC_PID_SMOOTHING. This value is computed
+ * using using an exponential weighted average technique:
+ *
+ * (RC_PID_SMOOTHING - 1) * err_avg_old + err
+ * err_avg = ------------------------------------------
+ * RC_PID_SMOOTHING
+ *
+ * where err_avg is the new approximation, err_avg_old the previous one
+ * and err is the error w.r.t. to the current failed frames percentage
+ * sample. Note that the bigger RC_PID_SMOOTHING the more weight is
+ * given to the previous estimate, resulting in smoother behavior (i.e.
+ * corresponding to a longer integration window).
+ *
+ * For computation, we actually don't use the above formula, but this
+ * one:
+ *
+ * err_avg_scaled = err_avg_old_scaled - err_avg_old + err
+ *
+ * where:
+ * err_avg_scaled = err * RC_PID_SMOOTHING
+ * err_avg_old_scaled = err_avg_old * RC_PID_SMOOTHING
+ *
+ * This avoids floating point numbers and the per_failed_old value can
+ * easily be obtained by shifting per_failed_old_scaled right by
+ * RC_PID_SMOOTHING_SHIFT.
+ */
+ s32 err_avg_sc;
+
+ /* Last framed failes percentage sample. */
+ u32 last_pf;
+
+ /* Sharpening needed. */
+ u8 sharp_cnt;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ /* Event buffer */
+ struct rc_pid_event_buffer events;
+
+ /* Events debugfs file entry */
+ struct dentry *events_entry;
+#endif
+};
+
+/* Algorithm parameters. We keep them on a per-algorithm approach, so they can
+ * be tuned individually for each interface.
+ */
+struct rc_pid_rateinfo {
+
+ /* Map sorted rates to rates in ieee80211_hw_mode. */
+ int index;
+
+ /* Map rates in ieee80211_hw_mode to sorted rates. */
+ int rev_index;
+
+ /* Did we do any measurement on this rate? */
+ bool valid;
+
+ /* Comparison with the lowest rate. */
+ int diff;
+};
+
+struct rc_pid_info {
+
+ /* The failed frames percentage target. */
+ unsigned int target;
+
+ /* Rate at which failed frames percentage is sampled in 0.001s. */
+ unsigned int sampling_period;
+
+ /* P, I and D coefficients. */
+ int coeff_p;
+ int coeff_i;
+ int coeff_d;
+
+ /* Exponential averaging shift. */
+ unsigned int smoothing_shift;
+
+ /* Sharpening factor and duration. */
+ unsigned int sharpen_factor;
+ unsigned int sharpen_duration;
+
+ /* Normalization offset. */
+ unsigned int norm_offset;
+
+ /* Rates information. */
+ struct rc_pid_rateinfo *rinfo;
+
+ /* Index of the last used rate. */
+ int oldrate;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ /* Debugfs entries created for the parameters above. */
+ struct rc_pid_debugfs_entries dentries;
+#endif
+};
+
+#endif /* RC80211_PID_H */
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
new file mode 100644
index 0000000..bcd27c1
--- /dev/null
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -0,0 +1,556 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2007, Mattias Nissler <mattias.nissler@gmx.de>
+ * Copyright 2007-2008, Stefano Brivio <stefano.brivio@polimi.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/debugfs.h>
+#include <net/mac80211.h>
+#include "rate.h"
+#include "mesh.h"
+#include "rc80211_pid.h"
+
+
+/* This is an implementation of a TX rate control algorithm that uses a PID
+ * controller. Given a target failed frames rate, the controller decides about
+ * TX rate changes to meet the target failed frames rate.
+ *
+ * The controller basically computes the following:
+ *
+ * adj = CP * err + CI * err_avg + CD * (err - last_err) * (1 + sharpening)
+ *
+ * where
+ * adj adjustment value that is used to switch TX rate (see below)
+ * err current error: target vs. current failed frames percentage
+ * last_err last error
+ * err_avg average (i.e. poor man's integral) of recent errors
+ * sharpening non-zero when fast response is needed (i.e. right after
+ * association or no frames sent for a long time), heading
+ * to zero over time
+ * CP Proportional coefficient
+ * CI Integral coefficient
+ * CD Derivative coefficient
+ *
+ * CP, CI, CD are subject to careful tuning.
+ *
+ * The integral component uses a exponential moving average approach instead of
+ * an actual sliding window. The advantage is that we don't need to keep an
+ * array of the last N error values and computation is easier.
+ *
+ * Once we have the adj value, we map it to a rate by means of a learning
+ * algorithm. This algorithm keeps the state of the percentual failed frames
+ * difference between rates. The behaviour of the lowest available rate is kept
+ * as a reference value, and every time we switch between two rates, we compute
+ * the difference between the failed frames each rate exhibited. By doing so,
+ * we compare behaviours which different rates exhibited in adjacent timeslices,
+ * thus the comparison is minimally affected by external conditions. This
+ * difference gets propagated to the whole set of measurements, so that the
+ * reference is always the same. Periodically, we normalize this set so that
+ * recent events weigh the most. By comparing the adj value with this set, we
+ * avoid pejorative switches to lower rates and allow for switches to higher
+ * rates if they behaved well.
+ *
+ * Note that for the computations we use a fixed-point representation to avoid
+ * floating point arithmetic. Hence, all values are shifted left by
+ * RC_PID_ARITH_SHIFT.
+ */
+
+
+/* Adjust the rate while ensuring that we won't switch to a lower rate if it
+ * exhibited a worse failed frames behaviour and we'll choose the highest rate
+ * whose failed frames behaviour is not worse than the one of the original rate
+ * target. While at it, check that the new rate is valid. */
+static void rate_control_pid_adjust_rate(struct ieee80211_local *local,
+ struct sta_info *sta, int adj,
+ struct rc_pid_rateinfo *rinfo)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+ int cur_sorted, new_sorted, probe, tmp, n_bitrates, band;
+ int cur = sta->txrate_idx;
+
+ sdata = sta->sdata;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ band = sband->band;
+ n_bitrates = sband->n_bitrates;
+
+ /* Map passed arguments to sorted values. */
+ cur_sorted = rinfo[cur].rev_index;
+ new_sorted = cur_sorted + adj;
+
+ /* Check limits. */
+ if (new_sorted < 0)
+ new_sorted = rinfo[0].rev_index;
+ else if (new_sorted >= n_bitrates)
+ new_sorted = rinfo[n_bitrates - 1].rev_index;
+
+ tmp = new_sorted;
+
+ if (adj < 0) {
+ /* Ensure that the rate decrease isn't disadvantageous. */
+ for (probe = cur_sorted; probe >= new_sorted; probe--)
+ if (rinfo[probe].diff <= rinfo[cur_sorted].diff &&
+ rate_supported(sta, band, rinfo[probe].index))
+ tmp = probe;
+ } else {
+ /* Look for rate increase with zero (or below) cost. */
+ for (probe = new_sorted + 1; probe < n_bitrates; probe++)
+ if (rinfo[probe].diff <= rinfo[new_sorted].diff &&
+ rate_supported(sta, band, rinfo[probe].index))
+ tmp = probe;
+ }
+
+ /* Fit the rate found to the nearest supported rate. */
+ do {
+ if (rate_supported(sta, band, rinfo[tmp].index)) {
+ sta->txrate_idx = rinfo[tmp].index;
+ break;
+ }
+ if (adj < 0)
+ tmp--;
+ else
+ tmp++;
+ } while (tmp < n_bitrates && tmp >= 0);
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ rate_control_pid_event_rate_change(
+ &((struct rc_pid_sta_info *)sta->rate_ctrl_priv)->events,
+ sta->txrate_idx, sband->bitrates[sta->txrate_idx].bitrate);
+#endif
+}
+
+/* Normalize the failed frames per-rate differences. */
+static void rate_control_pid_normalize(struct rc_pid_info *pinfo, int l)
+{
+ int i, norm_offset = pinfo->norm_offset;
+ struct rc_pid_rateinfo *r = pinfo->rinfo;
+
+ if (r[0].diff > norm_offset)
+ r[0].diff -= norm_offset;
+ else if (r[0].diff < -norm_offset)
+ r[0].diff += norm_offset;
+ for (i = 0; i < l - 1; i++)
+ if (r[i + 1].diff > r[i].diff + norm_offset)
+ r[i + 1].diff -= norm_offset;
+ else if (r[i + 1].diff <= r[i].diff)
+ r[i + 1].diff += norm_offset;
+}
+
+static void rate_control_pid_sample(struct rc_pid_info *pinfo,
+ struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_MESH
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+#endif
+ struct rc_pid_sta_info *spinfo = sta->rate_ctrl_priv;
+ struct rc_pid_rateinfo *rinfo = pinfo->rinfo;
+ struct ieee80211_supported_band *sband;
+ u32 pf;
+ s32 err_avg;
+ u32 err_prop;
+ u32 err_int;
+ u32 err_der;
+ int adj, i, j, tmp;
+ unsigned long period;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ spinfo = sta->rate_ctrl_priv;
+
+ /* In case nothing happened during the previous control interval, turn
+ * the sharpening factor on. */
+ period = (HZ * pinfo->sampling_period + 500) / 1000;
+ if (!period)
+ period = 1;
+ if (jiffies - spinfo->last_sample > 2 * period)
+ spinfo->sharp_cnt = pinfo->sharpen_duration;
+
+ spinfo->last_sample = jiffies;
+
+ /* This should never happen, but in case, we assume the old sample is
+ * still a good measurement and copy it. */
+ if (unlikely(spinfo->tx_num_xmit == 0))
+ pf = spinfo->last_pf;
+ else {
+ pf = spinfo->tx_num_failed * 100 / spinfo->tx_num_xmit;
+#ifdef CONFIG_MAC80211_MESH
+ if (pf == 100 &&
+ sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
+ mesh_plink_broken(sta);
+#endif
+ pf <<= RC_PID_ARITH_SHIFT;
+ sta->fail_avg = ((pf + (spinfo->last_pf << 3)) / 9)
+ >> RC_PID_ARITH_SHIFT;
+ }
+
+ spinfo->tx_num_xmit = 0;
+ spinfo->tx_num_failed = 0;
+
+ /* If we just switched rate, update the rate behaviour info. */
+ if (pinfo->oldrate != sta->txrate_idx) {
+
+ i = rinfo[pinfo->oldrate].rev_index;
+ j = rinfo[sta->txrate_idx].rev_index;
+
+ tmp = (pf - spinfo->last_pf);
+ tmp = RC_PID_DO_ARITH_RIGHT_SHIFT(tmp, RC_PID_ARITH_SHIFT);
+
+ rinfo[j].diff = rinfo[i].diff + tmp;
+ pinfo->oldrate = sta->txrate_idx;
+ }
+ rate_control_pid_normalize(pinfo, sband->n_bitrates);
+
+ /* Compute the proportional, integral and derivative errors. */
+ err_prop = (pinfo->target << RC_PID_ARITH_SHIFT) - pf;
+
+ err_avg = spinfo->err_avg_sc >> pinfo->smoothing_shift;
+ spinfo->err_avg_sc = spinfo->err_avg_sc - err_avg + err_prop;
+ err_int = spinfo->err_avg_sc >> pinfo->smoothing_shift;
+
+ err_der = (pf - spinfo->last_pf) *
+ (1 + pinfo->sharpen_factor * spinfo->sharp_cnt);
+ spinfo->last_pf = pf;
+ if (spinfo->sharp_cnt)
+ spinfo->sharp_cnt--;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ rate_control_pid_event_pf_sample(&spinfo->events, pf, err_prop, err_int,
+ err_der);
+#endif
+
+ /* Compute the controller output. */
+ adj = (err_prop * pinfo->coeff_p + err_int * pinfo->coeff_i
+ + err_der * pinfo->coeff_d);
+ adj = RC_PID_DO_ARITH_RIGHT_SHIFT(adj, 2 * RC_PID_ARITH_SHIFT);
+
+ /* Change rate. */
+ if (adj)
+ rate_control_pid_adjust_rate(local, sta, adj, rinfo);
+}
+
+static void rate_control_pid_tx_status(void *priv, struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_sub_if_data *sdata;
+ struct rc_pid_info *pinfo = priv;
+ struct sta_info *sta;
+ struct rc_pid_sta_info *spinfo;
+ unsigned long period;
+ struct ieee80211_supported_band *sband;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, hdr->addr1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ if (!sta)
+ goto unlock;
+
+ /* Don't update the state if we're not controlling the rate. */
+ sdata = sta->sdata;
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
+ sta->txrate_idx = sdata->bss->max_ratectrl_rateidx;
+ goto unlock;
+ }
+
+ /* Ignore all frames that were sent with a different rate than the rate
+ * we currently advise mac80211 to use. */
+ if (status->control.tx_rate != &sband->bitrates[sta->txrate_idx])
+ goto unlock;
+
+ spinfo = sta->rate_ctrl_priv;
+ spinfo->tx_num_xmit++;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ rate_control_pid_event_tx_status(&spinfo->events, status);
+#endif
+
+ /* We count frames that totally failed to be transmitted as two bad
+ * frames, those that made it out but had some retries as one good and
+ * one bad frame. */
+ if (status->excessive_retries) {
+ spinfo->tx_num_failed += 2;
+ spinfo->tx_num_xmit++;
+ } else if (status->retry_count) {
+ spinfo->tx_num_failed++;
+ spinfo->tx_num_xmit++;
+ }
+
+ if (status->excessive_retries) {
+ sta->tx_retry_failed++;
+ sta->tx_num_consecutive_failures++;
+ sta->tx_num_mpdu_fail++;
+ } else {
+ sta->tx_num_consecutive_failures = 0;
+ sta->tx_num_mpdu_ok++;
+ }
+ sta->tx_retry_count += status->retry_count;
+ sta->tx_num_mpdu_fail += status->retry_count;
+
+ /* Update PID controller state. */
+ period = (HZ * pinfo->sampling_period + 500) / 1000;
+ if (!period)
+ period = 1;
+ if (time_after(jiffies, spinfo->last_sample + period))
+ rate_control_pid_sample(pinfo, local, sta);
+
+ unlock:
+ rcu_read_unlock();
+}
+
+static void rate_control_pid_get_rate(void *priv, struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
+ int rateidx;
+ u16 fc;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, hdr->addr1);
+
+ /* Send management frames and broadcast/multicast data using lowest
+ * rate. */
+ fc = le16_to_cpu(hdr->frame_control);
+ if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+ is_multicast_ether_addr(hdr->addr1) || !sta) {
+ sel->rate = rate_lowest(local, sband, sta);
+ rcu_read_unlock();
+ return;
+ }
+
+ /* If a forced rate is in effect, select it. */
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
+ sta->txrate_idx = sdata->bss->force_unicast_rateidx;
+
+ rateidx = sta->txrate_idx;
+
+ if (rateidx >= sband->n_bitrates)
+ rateidx = sband->n_bitrates - 1;
+
+ sta->last_txrate_idx = rateidx;
+
+ rcu_read_unlock();
+
+ sel->rate = &sband->bitrates[rateidx];
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ rate_control_pid_event_tx_rate(
+ &((struct rc_pid_sta_info *) sta->rate_ctrl_priv)->events,
+ rateidx, sband->bitrates[rateidx].bitrate);
+#endif
+}
+
+static void rate_control_pid_rate_init(void *priv, void *priv_sta,
+ struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ /* TODO: This routine should consider using RSSI from previous packets
+ * as we need to have IEEE 802.1X auth succeed immediately after assoc..
+ * Until that method is implemented, we will use the lowest supported
+ * rate as a workaround. */
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sta->txrate_idx = rate_lowest_index(local, sband, sta);
+ sta->fail_avg = 0;
+}
+
+static void *rate_control_pid_alloc(struct ieee80211_local *local)
+{
+ struct rc_pid_info *pinfo;
+ struct rc_pid_rateinfo *rinfo;
+ struct ieee80211_supported_band *sband;
+ int i, j, tmp;
+ bool s;
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rc_pid_debugfs_entries *de;
+#endif
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ pinfo = kmalloc(sizeof(*pinfo), GFP_ATOMIC);
+ if (!pinfo)
+ return NULL;
+
+ /* We can safely assume that sband won't change unless we get
+ * reinitialized. */
+ rinfo = kmalloc(sizeof(*rinfo) * sband->n_bitrates, GFP_ATOMIC);
+ if (!rinfo) {
+ kfree(pinfo);
+ return NULL;
+ }
+
+ pinfo->target = RC_PID_TARGET_PF;
+ pinfo->sampling_period = RC_PID_INTERVAL;
+ pinfo->coeff_p = RC_PID_COEFF_P;
+ pinfo->coeff_i = RC_PID_COEFF_I;
+ pinfo->coeff_d = RC_PID_COEFF_D;
+ pinfo->smoothing_shift = RC_PID_SMOOTHING_SHIFT;
+ pinfo->sharpen_factor = RC_PID_SHARPENING_FACTOR;
+ pinfo->sharpen_duration = RC_PID_SHARPENING_DURATION;
+ pinfo->norm_offset = RC_PID_NORM_OFFSET;
+ pinfo->rinfo = rinfo;
+ pinfo->oldrate = 0;
+
+ /* Sort the rates. This is optimized for the most common case (i.e.
+ * almost-sorted CCK+OFDM rates). Kind of bubble-sort with reversed
+ * mapping too. */
+ for (i = 0; i < sband->n_bitrates; i++) {
+ rinfo[i].index = i;
+ rinfo[i].rev_index = i;
+ if (RC_PID_FAST_START)
+ rinfo[i].diff = 0;
+ else
+ rinfo[i].diff = i * pinfo->norm_offset;
+ }
+ for (i = 1; i < sband->n_bitrates; i++) {
+ s = 0;
+ for (j = 0; j < sband->n_bitrates - i; j++)
+ if (unlikely(sband->bitrates[rinfo[j].index].bitrate >
+ sband->bitrates[rinfo[j + 1].index].bitrate)) {
+ tmp = rinfo[j].index;
+ rinfo[j].index = rinfo[j + 1].index;
+ rinfo[j + 1].index = tmp;
+ rinfo[rinfo[j].index].rev_index = j;
+ rinfo[rinfo[j + 1].index].rev_index = j + 1;
+ s = 1;
+ }
+ if (!s)
+ break;
+ }
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ de = &pinfo->dentries;
+ de->dir = debugfs_create_dir("rc80211_pid",
+ local->hw.wiphy->debugfsdir);
+ de->target = debugfs_create_u32("target_pf", S_IRUSR | S_IWUSR,
+ de->dir, &pinfo->target);
+ de->sampling_period = debugfs_create_u32("sampling_period",
+ S_IRUSR | S_IWUSR, de->dir,
+ &pinfo->sampling_period);
+ de->coeff_p = debugfs_create_u32("coeff_p", S_IRUSR | S_IWUSR,
+ de->dir, &pinfo->coeff_p);
+ de->coeff_i = debugfs_create_u32("coeff_i", S_IRUSR | S_IWUSR,
+ de->dir, &pinfo->coeff_i);
+ de->coeff_d = debugfs_create_u32("coeff_d", S_IRUSR | S_IWUSR,
+ de->dir, &pinfo->coeff_d);
+ de->smoothing_shift = debugfs_create_u32("smoothing_shift",
+ S_IRUSR | S_IWUSR, de->dir,
+ &pinfo->smoothing_shift);
+ de->sharpen_factor = debugfs_create_u32("sharpen_factor",
+ S_IRUSR | S_IWUSR, de->dir,
+ &pinfo->sharpen_factor);
+ de->sharpen_duration = debugfs_create_u32("sharpen_duration",
+ S_IRUSR | S_IWUSR, de->dir,
+ &pinfo->sharpen_duration);
+ de->norm_offset = debugfs_create_u32("norm_offset",
+ S_IRUSR | S_IWUSR, de->dir,
+ &pinfo->norm_offset);
+#endif
+
+ return pinfo;
+}
+
+static void rate_control_pid_free(void *priv)
+{
+ struct rc_pid_info *pinfo = priv;
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rc_pid_debugfs_entries *de = &pinfo->dentries;
+
+ debugfs_remove(de->norm_offset);
+ debugfs_remove(de->sharpen_duration);
+ debugfs_remove(de->sharpen_factor);
+ debugfs_remove(de->smoothing_shift);
+ debugfs_remove(de->coeff_d);
+ debugfs_remove(de->coeff_i);
+ debugfs_remove(de->coeff_p);
+ debugfs_remove(de->sampling_period);
+ debugfs_remove(de->target);
+ debugfs_remove(de->dir);
+#endif
+
+ kfree(pinfo->rinfo);
+ kfree(pinfo);
+}
+
+static void rate_control_pid_clear(void *priv)
+{
+}
+
+static void *rate_control_pid_alloc_sta(void *priv, gfp_t gfp)
+{
+ struct rc_pid_sta_info *spinfo;
+
+ spinfo = kzalloc(sizeof(*spinfo), gfp);
+ if (spinfo == NULL)
+ return NULL;
+
+ spinfo->last_sample = jiffies;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ spin_lock_init(&spinfo->events.lock);
+ init_waitqueue_head(&spinfo->events.waitqueue);
+#endif
+
+ return spinfo;
+}
+
+static void rate_control_pid_free_sta(void *priv, void *priv_sta)
+{
+ struct rc_pid_sta_info *spinfo = priv_sta;
+ kfree(spinfo);
+}
+
+static struct rate_control_ops mac80211_rcpid = {
+ .name = "pid",
+ .tx_status = rate_control_pid_tx_status,
+ .get_rate = rate_control_pid_get_rate,
+ .rate_init = rate_control_pid_rate_init,
+ .clear = rate_control_pid_clear,
+ .alloc = rate_control_pid_alloc,
+ .free = rate_control_pid_free,
+ .alloc_sta = rate_control_pid_alloc_sta,
+ .free_sta = rate_control_pid_free_sta,
+#ifdef CONFIG_MAC80211_DEBUGFS
+ .add_sta_debugfs = rate_control_pid_add_sta_debugfs,
+ .remove_sta_debugfs = rate_control_pid_remove_sta_debugfs,
+#endif
+};
+
+MODULE_DESCRIPTION("PID controller based rate control algorithm");
+MODULE_AUTHOR("Stefano Brivio");
+MODULE_AUTHOR("Mattias Nissler");
+MODULE_LICENSE("GPL");
+
+int __init rc80211_pid_init(void)
+{
+ return ieee80211_rate_control_register(&mac80211_rcpid);
+}
+
+void rc80211_pid_exit(void)
+{
+ ieee80211_rate_control_unregister(&mac80211_rcpid);
+}
+
+#ifdef CONFIG_MAC80211_RC_PID_MODULE
+module_init(rc80211_pid_init);
+module_exit(rc80211_pid_exit);
+#endif
diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
new file mode 100644
index 0000000..ff5c380
--- /dev/null
+++ b/net/mac80211/rc80211_pid_debugfs.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright 2007, Mattias Nissler <mattias.nissler@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/spinlock.h>
+#include <linux/poll.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+
+#include <net/mac80211.h>
+#include "rate.h"
+
+#include "rc80211_pid.h"
+
+static void rate_control_pid_event(struct rc_pid_event_buffer *buf,
+ enum rc_pid_event_type type,
+ union rc_pid_event_data *data)
+{
+ struct rc_pid_event *ev;
+ unsigned long status;
+
+ spin_lock_irqsave(&buf->lock, status);
+ ev = &(buf->ring[buf->next_entry]);
+ buf->next_entry = (buf->next_entry + 1) % RC_PID_EVENT_RING_SIZE;
+
+ ev->timestamp = jiffies;
+ ev->id = buf->ev_count++;
+ ev->type = type;
+ ev->data = *data;
+
+ spin_unlock_irqrestore(&buf->lock, status);
+
+ wake_up_all(&buf->waitqueue);
+}
+
+void rate_control_pid_event_tx_status(struct rc_pid_event_buffer *buf,
+ struct ieee80211_tx_status *stat)
+{
+ union rc_pid_event_data evd;
+
+ memcpy(&evd.tx_status, stat, sizeof(struct ieee80211_tx_status));
+ rate_control_pid_event(buf, RC_PID_EVENT_TYPE_TX_STATUS, &evd);
+}
+
+void rate_control_pid_event_rate_change(struct rc_pid_event_buffer *buf,
+ int index, int rate)
+{
+ union rc_pid_event_data evd;
+
+ evd.index = index;
+ evd.rate = rate;
+ rate_control_pid_event(buf, RC_PID_EVENT_TYPE_RATE_CHANGE, &evd);
+}
+
+void rate_control_pid_event_tx_rate(struct rc_pid_event_buffer *buf,
+ int index, int rate)
+{
+ union rc_pid_event_data evd;
+
+ evd.index = index;
+ evd.rate = rate;
+ rate_control_pid_event(buf, RC_PID_EVENT_TYPE_TX_RATE, &evd);
+}
+
+void rate_control_pid_event_pf_sample(struct rc_pid_event_buffer *buf,
+ s32 pf_sample, s32 prop_err,
+ s32 int_err, s32 der_err)
+{
+ union rc_pid_event_data evd;
+
+ evd.pf_sample = pf_sample;
+ evd.prop_err = prop_err;
+ evd.int_err = int_err;
+ evd.der_err = der_err;
+ rate_control_pid_event(buf, RC_PID_EVENT_TYPE_PF_SAMPLE, &evd);
+}
+
+static int rate_control_pid_events_open(struct inode *inode, struct file *file)
+{
+ struct rc_pid_sta_info *sinfo = inode->i_private;
+ struct rc_pid_event_buffer *events = &sinfo->events;
+ struct rc_pid_events_file_info *file_info;
+ unsigned long status;
+
+ /* Allocate a state struct */
+ file_info = kmalloc(sizeof(*file_info), GFP_KERNEL);
+ if (file_info == NULL)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&events->lock, status);
+
+ file_info->next_entry = events->next_entry;
+ file_info->events = events;
+
+ spin_unlock_irqrestore(&events->lock, status);
+
+ file->private_data = file_info;
+
+ return 0;
+}
+
+static int rate_control_pid_events_release(struct inode *inode,
+ struct file *file)
+{
+ struct rc_pid_events_file_info *file_info = file->private_data;
+
+ kfree(file_info);
+
+ return 0;
+}
+
+static unsigned int rate_control_pid_events_poll(struct file *file,
+ poll_table *wait)
+{
+ struct rc_pid_events_file_info *file_info = file->private_data;
+
+ poll_wait(file, &file_info->events->waitqueue, wait);
+
+ return POLLIN | POLLRDNORM;
+}
+
+#define RC_PID_PRINT_BUF_SIZE 64
+
+static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf,
+ size_t length, loff_t *offset)
+{
+ struct rc_pid_events_file_info *file_info = file->private_data;
+ struct rc_pid_event_buffer *events = file_info->events;
+ struct rc_pid_event *ev;
+ char pb[RC_PID_PRINT_BUF_SIZE];
+ int ret;
+ int p;
+ unsigned long status;
+
+ /* Check if there is something to read. */
+ if (events->next_entry == file_info->next_entry) {
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ /* Wait */
+ ret = wait_event_interruptible(events->waitqueue,
+ events->next_entry != file_info->next_entry);
+
+ if (ret)
+ return ret;
+ }
+
+ /* Write out one event per call. I don't care whether it's a little
+ * inefficient, this is debugging code anyway. */
+ spin_lock_irqsave(&events->lock, status);
+
+ /* Get an event */
+ ev = &(events->ring[file_info->next_entry]);
+ file_info->next_entry = (file_info->next_entry + 1) %
+ RC_PID_EVENT_RING_SIZE;
+
+ /* Print information about the event. Note that userpace needs to
+ * provide large enough buffers. */
+ length = length < RC_PID_PRINT_BUF_SIZE ?
+ length : RC_PID_PRINT_BUF_SIZE;
+ p = snprintf(pb, length, "%u %lu ", ev->id, ev->timestamp);
+ switch (ev->type) {
+ case RC_PID_EVENT_TYPE_TX_STATUS:
+ p += snprintf(pb + p, length - p, "tx_status %u %u",
+ ev->data.tx_status.excessive_retries,
+ ev->data.tx_status.retry_count);
+ break;
+ case RC_PID_EVENT_TYPE_RATE_CHANGE:
+ p += snprintf(pb + p, length - p, "rate_change %d %d",
+ ev->data.index, ev->data.rate);
+ break;
+ case RC_PID_EVENT_TYPE_TX_RATE:
+ p += snprintf(pb + p, length - p, "tx_rate %d %d",
+ ev->data.index, ev->data.rate);
+ break;
+ case RC_PID_EVENT_TYPE_PF_SAMPLE:
+ p += snprintf(pb + p, length - p,
+ "pf_sample %d %d %d %d",
+ ev->data.pf_sample, ev->data.prop_err,
+ ev->data.int_err, ev->data.der_err);
+ break;
+ }
+ p += snprintf(pb + p, length - p, "\n");
+
+ spin_unlock_irqrestore(&events->lock, status);
+
+ if (copy_to_user(buf, pb, p))
+ return -EFAULT;
+
+ return p;
+}
+
+#undef RC_PID_PRINT_BUF_SIZE
+
+static struct file_operations rc_pid_fop_events = {
+ .owner = THIS_MODULE,
+ .read = rate_control_pid_events_read,
+ .poll = rate_control_pid_events_poll,
+ .open = rate_control_pid_events_open,
+ .release = rate_control_pid_events_release,
+};
+
+void rate_control_pid_add_sta_debugfs(void *priv, void *priv_sta,
+ struct dentry *dir)
+{
+ struct rc_pid_sta_info *spinfo = priv_sta;
+
+ spinfo->events_entry = debugfs_create_file("rc_pid_events", S_IRUGO,
+ dir, spinfo,
+ &rc_pid_fop_events);
+}
+
+void rate_control_pid_remove_sta_debugfs(void *priv, void *priv_sta)
+{
+ struct rc_pid_sta_info *spinfo = priv_sta;
+
+ debugfs_remove(spinfo->events_entry);
+}
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index da72737..e69de29 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -1,408 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/compiler.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "debugfs.h"
-
-
-/* This is a minimal implementation of TX rate controlling that can be used
- * as the default when no improved mechanisms are available. */
-
-
-#define RATE_CONTROL_EMERG_DEC 2
-#define RATE_CONTROL_INTERVAL (HZ / 20)
-#define RATE_CONTROL_MIN_TX 10
-
-static void rate_control_rate_inc(struct ieee80211_local *local,
- struct sta_info *sta)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_hw_mode *mode;
- int i = sta->txrate;
- int maxrate;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
- if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
- /* forced unicast rate - do not change STA rate */
- return;
- }
-
- mode = local->oper_hw_mode;
- maxrate = sdata->bss ? sdata->bss->max_ratectrl_rateidx : -1;
-
- if (i > mode->num_rates)
- i = mode->num_rates - 2;
-
- while (i + 1 < mode->num_rates) {
- i++;
- if (sta->supp_rates & BIT(i) &&
- mode->rates[i].flags & IEEE80211_RATE_SUPPORTED &&
- (maxrate < 0 || i <= maxrate)) {
- sta->txrate = i;
- break;
- }
- }
-}
-
-
-static void rate_control_rate_dec(struct ieee80211_local *local,
- struct sta_info *sta)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_hw_mode *mode;
- int i = sta->txrate;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
- if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) {
- /* forced unicast rate - do not change STA rate */
- return;
- }
-
- mode = local->oper_hw_mode;
- if (i > mode->num_rates)
- i = mode->num_rates;
-
- while (i > 0) {
- i--;
- if (sta->supp_rates & BIT(i) &&
- mode->rates[i].flags & IEEE80211_RATE_SUPPORTED) {
- sta->txrate = i;
- break;
- }
- }
-}
-
-
-static struct ieee80211_rate *
-rate_control_lowest_rate(struct ieee80211_local *local,
- struct ieee80211_hw_mode *mode)
-{
- int i;
-
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
-
- if (rate->flags & IEEE80211_RATE_SUPPORTED)
- return rate;
- }
-
- printk(KERN_DEBUG "rate_control_lowest_rate - no supported rates "
- "found\n");
- return &mode->rates[0];
-}
-
-
-struct global_rate_control {
- int dummy;
-};
-
-struct sta_rate_control {
- unsigned long last_rate_change;
- u32 tx_num_failures;
- u32 tx_num_xmit;
-
- unsigned long avg_rate_update;
- u32 tx_avg_rate_sum;
- u32 tx_avg_rate_num;
-
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct dentry *tx_avg_rate_sum_dentry;
- struct dentry *tx_avg_rate_num_dentry;
-#endif
-};
-
-
-static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct sta_info *sta;
- struct sta_rate_control *srctrl;
-
- sta = sta_info_get(local, hdr->addr1);
-
- if (!sta)
- return;
-
- srctrl = sta->rate_ctrl_priv;
- srctrl->tx_num_xmit++;
- if (status->excessive_retries) {
- srctrl->tx_num_failures++;
- sta->tx_retry_failed++;
- sta->tx_num_consecutive_failures++;
- sta->tx_num_mpdu_fail++;
- } else {
- sta->last_ack_rssi[0] = sta->last_ack_rssi[1];
- sta->last_ack_rssi[1] = sta->last_ack_rssi[2];
- sta->last_ack_rssi[2] = status->ack_signal;
- sta->tx_num_consecutive_failures = 0;
- sta->tx_num_mpdu_ok++;
- }
- sta->tx_retry_count += status->retry_count;
- sta->tx_num_mpdu_fail += status->retry_count;
-
- if (time_after(jiffies,
- srctrl->last_rate_change + RATE_CONTROL_INTERVAL) &&
- srctrl->tx_num_xmit > RATE_CONTROL_MIN_TX) {
- u32 per_failed;
- srctrl->last_rate_change = jiffies;
-
- per_failed = (100 * sta->tx_num_mpdu_fail) /
- (sta->tx_num_mpdu_fail + sta->tx_num_mpdu_ok);
- /* TODO: calculate average per_failed to make adjusting
- * parameters easier */
-#if 0
- if (net_ratelimit()) {
- printk(KERN_DEBUG "MPDU fail=%d ok=%d per_failed=%d\n",
- sta->tx_num_mpdu_fail, sta->tx_num_mpdu_ok,
- per_failed);
- }
-#endif
-
- /*
- * XXX: Make these configurable once we have an
- * interface to the rate control algorithms
- */
- if (per_failed > RATE_CONTROL_NUM_DOWN) {
- rate_control_rate_dec(local, sta);
- } else if (per_failed < RATE_CONTROL_NUM_UP) {
- rate_control_rate_inc(local, sta);
- }
- srctrl->tx_avg_rate_sum += status->control.rate->rate;
- srctrl->tx_avg_rate_num++;
- srctrl->tx_num_failures = 0;
- srctrl->tx_num_xmit = 0;
- } else if (sta->tx_num_consecutive_failures >=
- RATE_CONTROL_EMERG_DEC) {
- rate_control_rate_dec(local, sta);
- }
-
- if (srctrl->avg_rate_update + 60 * HZ < jiffies) {
- srctrl->avg_rate_update = jiffies;
- if (srctrl->tx_avg_rate_num > 0) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
- printk(KERN_DEBUG "%s: STA %s Average rate: "
- "%d (%d/%d)\n",
- dev->name, print_mac(mac, sta->addr),
- srctrl->tx_avg_rate_sum /
- srctrl->tx_avg_rate_num,
- srctrl->tx_avg_rate_sum,
- srctrl->tx_avg_rate_num);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- srctrl->tx_avg_rate_sum = 0;
- srctrl->tx_avg_rate_num = 0;
- }
- }
-
- sta_info_put(sta);
-}
-
-
-static struct ieee80211_rate *
-rate_control_simple_get_rate(void *priv, struct net_device *dev,
- struct sk_buff *skb,
- struct rate_control_extra *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_hw_mode *mode = extra->mode;
- struct sta_info *sta;
- int rateidx, nonerp_idx;
- u16 fc;
-
- memset(extra, 0, sizeof(*extra));
-
- fc = le16_to_cpu(hdr->frame_control);
- if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
- (hdr->addr1[0] & 0x01)) {
- /* Send management frames and broadcast/multicast data using
- * lowest rate. */
- /* TODO: this could probably be improved.. */
- return rate_control_lowest_rate(local, mode);
- }
-
- sta = sta_info_get(local, hdr->addr1);
-
- if (!sta)
- return rate_control_lowest_rate(local, mode);
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->bss && sdata->bss->force_unicast_rateidx > -1)
- sta->txrate = sdata->bss->force_unicast_rateidx;
-
- rateidx = sta->txrate;
-
- if (rateidx >= mode->num_rates)
- rateidx = mode->num_rates - 1;
-
- sta->last_txrate = rateidx;
- nonerp_idx = rateidx;
- while (nonerp_idx > 0 &&
- ((mode->rates[nonerp_idx].flags & IEEE80211_RATE_ERP) ||
- !(mode->rates[nonerp_idx].flags & IEEE80211_RATE_SUPPORTED) ||
- !(sta->supp_rates & BIT(nonerp_idx))))
- nonerp_idx--;
- extra->nonerp = &mode->rates[nonerp_idx];
-
- sta_info_put(sta);
-
- return &mode->rates[rateidx];
-}
-
-
-static void rate_control_simple_rate_init(void *priv, void *priv_sta,
- struct ieee80211_local *local,
- struct sta_info *sta)
-{
- struct ieee80211_hw_mode *mode;
- int i;
- sta->txrate = 0;
- mode = local->oper_hw_mode;
- /* TODO: This routine should consider using RSSI from previous packets
- * as we need to have IEEE 802.1X auth succeed immediately after assoc..
- * Until that method is implemented, we will use the lowest supported rate
- * as a workaround, */
- for (i = 0; i < mode->num_rates; i++) {
- if ((sta->supp_rates & BIT(i)) &&
- (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED)) {
- sta->txrate = i;
- break;
- }
- }
-}
-
-
-static void * rate_control_simple_alloc(struct ieee80211_local *local)
-{
- struct global_rate_control *rctrl;
-
- rctrl = kzalloc(sizeof(*rctrl), GFP_ATOMIC);
-
- return rctrl;
-}
-
-
-static void rate_control_simple_free(void *priv)
-{
- struct global_rate_control *rctrl = priv;
- kfree(rctrl);
-}
-
-
-static void rate_control_simple_clear(void *priv)
-{
-}
-
-
-static void * rate_control_simple_alloc_sta(void *priv, gfp_t gfp)
-{
- struct sta_rate_control *rctrl;
-
- rctrl = kzalloc(sizeof(*rctrl), gfp);
-
- return rctrl;
-}
-
-
-static void rate_control_simple_free_sta(void *priv, void *priv_sta)
-{
- struct sta_rate_control *rctrl = priv_sta;
- kfree(rctrl);
-}
-
-#ifdef CONFIG_MAC80211_DEBUGFS
-
-static int open_file_generic(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-static ssize_t sta_tx_avg_rate_sum_read(struct file *file,
- char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct sta_rate_control *srctrl = file->private_data;
- char buf[20];
-
- sprintf(buf, "%d\n", srctrl->tx_avg_rate_sum);
- return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
-}
-
-static const struct file_operations sta_tx_avg_rate_sum_ops = {
- .read = sta_tx_avg_rate_sum_read,
- .open = open_file_generic,
-};
-
-static ssize_t sta_tx_avg_rate_num_read(struct file *file,
- char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct sta_rate_control *srctrl = file->private_data;
- char buf[20];
-
- sprintf(buf, "%d\n", srctrl->tx_avg_rate_num);
- return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
-}
-
-static const struct file_operations sta_tx_avg_rate_num_ops = {
- .read = sta_tx_avg_rate_num_read,
- .open = open_file_generic,
-};
-
-static void rate_control_simple_add_sta_debugfs(void *priv, void *priv_sta,
- struct dentry *dir)
-{
- struct sta_rate_control *srctrl = priv_sta;
-
- srctrl->tx_avg_rate_num_dentry =
- debugfs_create_file("rc_simple_sta_tx_avg_rate_num", 0400,
- dir, srctrl, &sta_tx_avg_rate_num_ops);
- srctrl->tx_avg_rate_sum_dentry =
- debugfs_create_file("rc_simple_sta_tx_avg_rate_sum", 0400,
- dir, srctrl, &sta_tx_avg_rate_sum_ops);
-}
-
-static void rate_control_simple_remove_sta_debugfs(void *priv, void *priv_sta)
-{
- struct sta_rate_control *srctrl = priv_sta;
-
- debugfs_remove(srctrl->tx_avg_rate_sum_dentry);
- debugfs_remove(srctrl->tx_avg_rate_num_dentry);
-}
-#endif
-
-struct rate_control_ops mac80211_rcsimple = {
- .name = "simple",
- .tx_status = rate_control_simple_tx_status,
- .get_rate = rate_control_simple_get_rate,
- .rate_init = rate_control_simple_rate_init,
- .clear = rate_control_simple_clear,
- .alloc = rate_control_simple_alloc,
- .free = rate_control_simple_free,
- .alloc_sta = rate_control_simple_alloc_sta,
- .free_sta = rate_control_simple_free_sta,
-#ifdef CONFIG_MAC80211_DEBUGFS
- .add_sta_debugfs = rate_control_simple_add_sta_debugfs,
- .remove_sta_debugfs = rate_control_simple_remove_sta_debugfs,
-#endif
-};
diff --git a/net/mac80211/regdomain.c b/net/mac80211/regdomain.c
index f42678f..e69de29 100644
--- a/net/mac80211/regdomain.c
+++ b/net/mac80211/regdomain.c
@@ -1,152 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * This regulatory domain control implementation is known to be incomplete
- * and confusing. mac80211 regulatory domain control will be significantly
- * reworked in the not-too-distant future.
- *
- * For now, drivers wishing to control which channels are and aren't available
- * are advised as follows:
- * - set the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag
- * - continue to include *ALL* possible channels in the modes registered
- * through ieee80211_register_hwmode()
- * - for each allowable ieee80211_channel structure registered in the above
- * call, set the flag member to some meaningful value such as
- * IEEE80211_CHAN_W_SCAN | IEEE80211_CHAN_W_ACTIVE_SCAN |
- * IEEE80211_CHAN_W_IBSS.
- * - leave flag as 0 for non-allowable channels
- *
- * The usual implementation is for a driver to read a device EEPROM to
- * determine which regulatory domain it should be operating under, then
- * looking up the allowable channels in a driver-local table, then performing
- * the above.
- */
-
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-
-static int ieee80211_regdom = 0x10; /* FCC */
-module_param(ieee80211_regdom, int, 0444);
-MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK");
-
-/*
- * If firmware is upgraded by the vendor, additional channels can be used based
- * on the new Japanese regulatory rules. This is indicated by setting
- * ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel
- * module.
- */
-static int ieee80211_japan_5ghz /* = 0 */;
-module_param(ieee80211_japan_5ghz, int, 0444);
-MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz");
-
-
-struct ieee80211_channel_range {
- short start_freq;
- short end_freq;
- unsigned char power_level;
- unsigned char antenna_max;
-};
-
-static const struct ieee80211_channel_range ieee80211_fcc_channels[] = {
- { 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */,
- { 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */,
- { 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */,
- { 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */,
- { 0 }
-};
-
-static const struct ieee80211_channel_range ieee80211_mkk_channels[] = {
- { 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */,
- { 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */,
- { 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */,
- { 0 }
-};
-
-
-static const struct ieee80211_channel_range *channel_range =
- ieee80211_fcc_channels;
-
-
-static void ieee80211_unmask_channel(int mode, struct ieee80211_channel *chan)
-{
- int i;
-
- chan->flag = 0;
-
- for (i = 0; channel_range[i].start_freq; i++) {
- const struct ieee80211_channel_range *r = &channel_range[i];
- if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) {
- if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz &&
- chan->freq >= 5260 && chan->freq <= 5320) {
- /*
- * Skip new channels in Japan since the
- * firmware was not marked having been upgraded
- * by the vendor.
- */
- continue;
- }
-
- if (ieee80211_regdom == 0x10 &&
- (chan->freq == 5190 || chan->freq == 5210 ||
- chan->freq == 5230)) {
- /* Skip MKK channels when in FCC domain. */
- continue;
- }
-
- chan->flag |= IEEE80211_CHAN_W_SCAN |
- IEEE80211_CHAN_W_ACTIVE_SCAN |
- IEEE80211_CHAN_W_IBSS;
- chan->power_level = r->power_level;
- chan->antenna_max = r->antenna_max;
-
- if (ieee80211_regdom == 64 &&
- (chan->freq == 5170 || chan->freq == 5190 ||
- chan->freq == 5210 || chan->freq == 5230)) {
- /*
- * New regulatory rules in Japan have backwards
- * compatibility with old channels in 5.15-5.25
- * GHz band, but the station is not allowed to
- * use active scan on these old channels.
- */
- chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN;
- }
-
- if (ieee80211_regdom == 64 &&
- (chan->freq == 5260 || chan->freq == 5280 ||
- chan->freq == 5300 || chan->freq == 5320)) {
- /*
- * IBSS is not allowed on 5.25-5.35 GHz band
- * due to radar detection requirements.
- */
- chan->flag &= ~IEEE80211_CHAN_W_IBSS;
- }
-
- break;
- }
- }
-}
-
-
-void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode)
-{
- int c;
- for (c = 0; c < mode->num_channels; c++)
- ieee80211_unmask_channel(mode->mode, &mode->channels[c]);
-}
-
-
-void ieee80211_regdomain_init(void)
-{
- if (ieee80211_regdom == 0x40)
- channel_range = ieee80211_mkk_channels;
-}
-
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index bdafb45..0ab0c50 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -9,6 +9,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
@@ -18,12 +19,17 @@
#include <net/ieee80211_radiotap.h>
#include "ieee80211_i.h"
-#include "ieee80211_led.h"
+#include "led.h"
+#include "mesh.h"
#include "wep.h"
#include "wpa.h"
#include "tkip.h"
#include "wme.h"
+u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
+ struct tid_ampdu_rx *tid_agg_rx,
+ struct sk_buff *skb, u16 mpdu_seq_num,
+ int bar_req);
/*
* monitor mode reception
*
@@ -61,8 +67,12 @@ static inline int should_drop_frame(struct ieee80211_rx_status *status,
return 1;
if (unlikely(skb->len < 16 + present_fcs_len + radiotap_len))
return 1;
- if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
- cpu_to_le16(IEEE80211_FTYPE_CTL))
+ if (((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
+ cpu_to_le16(IEEE80211_FTYPE_CTL)) &&
+ ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
+ cpu_to_le16(IEEE80211_STYPE_PSPOLL)) &&
+ ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE)) !=
+ cpu_to_le16(IEEE80211_STYPE_BACK_REQ)))
return 1;
return 0;
}
@@ -74,13 +84,14 @@ static inline int should_drop_frame(struct ieee80211_rx_status *status,
*/
static struct sk_buff *
ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
- struct ieee80211_rx_status *status)
+ struct ieee80211_rx_status *status,
+ struct ieee80211_rate *rate)
{
struct ieee80211_sub_if_data *sdata;
- struct ieee80211_rate *rate;
int needed_headroom = 0;
- struct ieee80211_rtap_hdr {
- struct ieee80211_radiotap_header hdr;
+ struct ieee80211_radiotap_header *rthdr;
+ __le64 *rttsft = NULL;
+ struct ieee80211_rtap_fixed_data {
u8 flags;
u8 rate;
__le16 chan_freq;
@@ -88,7 +99,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
u8 antsignal;
u8 padding_for_rxflags;
__le16 rx_flags;
- } __attribute__ ((packed)) *rthdr;
+ } __attribute__ ((packed)) *rtfixed;
struct sk_buff *skb, *skb2;
struct net_device *prev_dev = NULL;
int present_fcs_len = 0;
@@ -105,7 +116,8 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
if (status->flag & RX_FLAG_RADIOTAP)
rtap_len = ieee80211_get_radiotap_len(origskb->data);
else
- needed_headroom = sizeof(*rthdr);
+ /* room for radiotap header, always present fields and TSFT */
+ needed_headroom = sizeof(*rthdr) + sizeof(*rtfixed) + 8;
if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
present_fcs_len = FCS_LEN;
@@ -133,7 +145,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
* them allocate enough headroom to start with.
*/
if (skb_headroom(skb) < needed_headroom &&
- pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) {
+ pskb_expand_head(skb, needed_headroom, 0, GFP_ATOMIC)) {
dev_kfree_skb(skb);
return NULL;
}
@@ -152,45 +164,56 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
/* if necessary, prepend radiotap information */
if (!(status->flag & RX_FLAG_RADIOTAP)) {
+ rtfixed = (void *) skb_push(skb, sizeof(*rtfixed));
+ rtap_len = sizeof(*rthdr) + sizeof(*rtfixed);
+ if (status->flag & RX_FLAG_TSFT) {
+ rttsft = (void *) skb_push(skb, sizeof(*rttsft));
+ rtap_len += 8;
+ }
rthdr = (void *) skb_push(skb, sizeof(*rthdr));
memset(rthdr, 0, sizeof(*rthdr));
- rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
- rthdr->hdr.it_present =
+ memset(rtfixed, 0, sizeof(*rtfixed));
+ rthdr->it_present =
cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_RATE) |
(1 << IEEE80211_RADIOTAP_CHANNEL) |
(1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) |
(1 << IEEE80211_RADIOTAP_RX_FLAGS));
- rthdr->flags = local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS ?
- IEEE80211_RADIOTAP_F_FCS : 0;
+ rtfixed->flags = 0;
+ if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
+ rtfixed->flags |= IEEE80211_RADIOTAP_F_FCS;
+
+ if (rttsft) {
+ *rttsft = cpu_to_le64(status->mactime);
+ rthdr->it_present |=
+ cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);
+ }
/* FIXME: when radiotap gets a 'bad PLCP' flag use it here */
- rthdr->rx_flags = 0;
+ rtfixed->rx_flags = 0;
if (status->flag &
(RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))
- rthdr->rx_flags |=
+ rtfixed->rx_flags |=
cpu_to_le16(IEEE80211_RADIOTAP_F_RX_BADFCS);
- rate = ieee80211_get_rate(local, status->phymode,
- status->rate);
- if (rate)
- rthdr->rate = rate->rate / 5;
+ rtfixed->rate = rate->bitrate / 5;
- rthdr->chan_freq = cpu_to_le16(status->freq);
+ rtfixed->chan_freq = cpu_to_le16(status->freq);
- if (status->phymode == MODE_IEEE80211A)
- rthdr->chan_flags =
+ if (status->band == IEEE80211_BAND_5GHZ)
+ rtfixed->chan_flags =
cpu_to_le16(IEEE80211_CHAN_OFDM |
IEEE80211_CHAN_5GHZ);
else
- rthdr->chan_flags =
+ rtfixed->chan_flags =
cpu_to_le16(IEEE80211_CHAN_DYN |
IEEE80211_CHAN_2GHZ);
- rthdr->antsignal = status->ssi;
+ rtfixed->antsignal = status->ssi;
+ rthdr->it_len = cpu_to_le16(rtap_len);
}
- skb_set_mac_header(skb, 0);
+ skb_reset_mac_header(skb);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
@@ -199,7 +222,10 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
if (!netif_running(sdata->dev))
continue;
- if (sdata->type != IEEE80211_IF_TYPE_MNTR)
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR)
+ continue;
+
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)
continue;
if (prev_dev) {
@@ -225,15 +251,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
}
-/* pre-rx handlers
- *
- * these don't have dev/sdata fields in the rx data
- * The sta value should also not be used because it may
- * be NULL even though a STA (in IBSS mode) will be added.
- */
-
-static ieee80211_txrx_result
-ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
+static void ieee80211_parse_qos(struct ieee80211_rx_data *rx)
{
u8 *data = rx->skb->data;
int tid;
@@ -244,9 +262,9 @@ ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
/* frame has qos control */
tid = qc[0] & QOS_CONTROL_TID_MASK;
if (qc[0] & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
- rx->flags |= IEEE80211_TXRXD_RX_AMSDU;
+ rx->flags |= IEEE80211_RX_AMSDU;
else
- rx->flags &= ~IEEE80211_TXRXD_RX_AMSDU;
+ rx->flags &= ~IEEE80211_RX_AMSDU;
} else {
if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
/* Separate TID for management frames */
@@ -262,44 +280,63 @@ ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
if (rx->sta)
I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]);
- rx->u.rx.queue = tid;
+ rx->queue = tid;
/* Set skb->priority to 1d tag if highest order bit of TID is not set.
* For now, set skb->priority to 0 for other cases. */
rx->skb->priority = (tid > 7) ? 0 : tid;
+}
+
+static void ieee80211_verify_ip_alignment(struct ieee80211_rx_data *rx)
+{
+#ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT
+ int hdrlen;
+
+ if (!WLAN_FC_DATA_PRESENT(rx->fc))
+ return;
- return TXRX_CONTINUE;
+ /*
+ * Drivers are required to align the payload data in a way that
+ * guarantees that the contained IP header is aligned to a four-
+ * byte boundary. In the case of regular frames, this simply means
+ * aligning the payload to a four-byte boundary (because either
+ * the IP header is directly contained, or IV/RFC1042 headers that
+ * have a length divisible by four are in front of it.
+ *
+ * With A-MSDU frames, however, the payload data address must
+ * yield two modulo four because there are 14-byte 802.3 headers
+ * within the A-MSDU frames that push the IP header further back
+ * to a multiple of four again. Thankfully, the specs were sane
+ * enough this time around to require padding each A-MSDU subframe
+ * to a length that is a multiple of four.
+ *
+ * Padding like atheros hardware adds which is inbetween the 802.11
+ * header and the payload is not supported, the driver is required
+ * to move the 802.11 header further back in that case.
+ */
+ hdrlen = ieee80211_get_hdrlen(rx->fc);
+ if (rx->flags & IEEE80211_RX_AMSDU)
+ hdrlen += ETH_HLEN;
+ WARN_ON_ONCE(((unsigned long)(rx->skb->data + hdrlen)) & 3);
+#endif
}
-static ieee80211_txrx_result
-ieee80211_rx_h_load_stats(struct ieee80211_txrx_data *rx)
+
+static u32 ieee80211_rx_load_stats(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct ieee80211_rx_status *status,
+ struct ieee80211_rate *rate)
{
- struct ieee80211_local *local = rx->local;
- struct sk_buff *skb = rx->skb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
u32 load = 0, hdrtime;
- struct ieee80211_rate *rate;
- struct ieee80211_hw_mode *mode = local->hw.conf.mode;
- int i;
/* Estimate total channel use caused by this frame */
- if (unlikely(mode->num_rates < 0))
- return TXRX_CONTINUE;
-
- rate = &mode->rates[0];
- for (i = 0; i < mode->num_rates; i++) {
- if (mode->rates[i].val == rx->u.rx.status->rate) {
- rate = &mode->rates[i];
- break;
- }
- }
-
/* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
* 1 usec = 1/8 * (1080 / 10) = 13.5 */
- if (mode->mode == MODE_IEEE80211A ||
- (mode->mode == MODE_IEEE80211G &&
- rate->flags & IEEE80211_RATE_ERP))
+ if (status->band == IEEE80211_BAND_5GHZ ||
+ (status->band == IEEE80211_BAND_5GHZ &&
+ rate->flags & IEEE80211_RATE_ERP_G))
hdrtime = CHAN_UTIL_HDR_SHORT;
else
hdrtime = CHAN_UTIL_HDR_LONG;
@@ -308,97 +345,129 @@ ieee80211_rx_h_load_stats(struct ieee80211_txrx_data *rx)
if (!is_multicast_ether_addr(hdr->addr1))
load += hdrtime;
- load += skb->len * rate->rate_inv;
+ /* TODO: optimise again */
+ load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate;
/* Divide channel_use by 8 to avoid wrapping around the counter */
load >>= CHAN_UTIL_SHIFT;
- local->channel_use_raw += load;
- rx->u.rx.load = load;
- return TXRX_CONTINUE;
+ return load;
}
-ieee80211_rx_handler ieee80211_rx_pre_handlers[] =
-{
- ieee80211_rx_h_parse_qos,
- ieee80211_rx_h_load_stats,
- NULL
-};
-
/* rx handlers */
-static ieee80211_txrx_result
-ieee80211_rx_h_if_stats(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_if_stats(struct ieee80211_rx_data *rx)
{
if (rx->sta)
- rx->sta->channel_use_raw += rx->u.rx.load;
- rx->sdata->channel_use_raw += rx->u.rx.load;
- return TXRX_CONTINUE;
+ rx->sta->channel_use_raw += rx->load;
+ rx->sdata->channel_use_raw += rx->load;
+ return RX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx)
{
struct ieee80211_local *local = rx->local;
struct sk_buff *skb = rx->skb;
if (unlikely(local->sta_hw_scanning))
- return ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status);
+ return ieee80211_sta_rx_scan(rx->dev, skb, rx->status);
if (unlikely(local->sta_sw_scanning)) {
/* drop all the other packets during a software scan anyway */
- if (ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status)
- != TXRX_QUEUED)
+ if (ieee80211_sta_rx_scan(rx->dev, skb, rx->status)
+ != RX_QUEUED)
dev_kfree_skb(skb);
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
- if (unlikely(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) {
+ if (unlikely(rx->flags & IEEE80211_RX_IN_SCAN)) {
/* scanning finished during invoking of handlers */
I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
+{
+ int hdrlen = ieee80211_get_hdrlen(rx->fc);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l))
+
+ if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
+ if (!((rx->fc & IEEE80211_FCTL_FROMDS) &&
+ (rx->fc & IEEE80211_FCTL_TODS)))
+ return RX_DROP_MONITOR;
+ if (memcmp(hdr->addr4, rx->dev->dev_addr, ETH_ALEN) == 0)
+ return RX_DROP_MONITOR;
+ }
+
+ /* If there is not an established peer link and this is not a peer link
+ * establisment frame, beacon or probe, drop the frame.
+ */
+
+ if (!rx->sta || sta_plink_state(rx->sta) != PLINK_ESTAB) {
+ struct ieee80211_mgmt *mgmt;
+
+ if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
+ return RX_DROP_MONITOR;
+
+ switch (rx->fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_ACTION:
+ mgmt = (struct ieee80211_mgmt *)hdr;
+ if (mgmt->u.action.category != PLINK_CATEGORY)
+ return RX_DROP_MONITOR;
+ /* fall through on else */
+ case IEEE80211_STYPE_PROBE_REQ:
+ case IEEE80211_STYPE_PROBE_RESP:
+ case IEEE80211_STYPE_BEACON:
+ return RX_CONTINUE;
+ break;
+ default:
+ return RX_DROP_MONITOR;
+ }
+
+ } else if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+ is_multicast_ether_addr(hdr->addr1) &&
+ mesh_rmc_check(hdr->addr4, msh_h_get(hdr, hdrlen), rx->dev))
+ return RX_DROP_MONITOR;
+#undef msh_h_get
+
+ return RX_CONTINUE;
+}
+
+
+static ieee80211_rx_result
+ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr;
+
hdr = (struct ieee80211_hdr *) rx->skb->data;
/* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */
if (rx->sta && !is_multicast_ether_addr(hdr->addr1)) {
if (unlikely(rx->fc & IEEE80211_FCTL_RETRY &&
- rx->sta->last_seq_ctrl[rx->u.rx.queue] ==
+ rx->sta->last_seq_ctrl[rx->queue] ==
hdr->seq_ctrl)) {
- if (rx->flags & IEEE80211_TXRXD_RXRA_MATCH) {
+ if (rx->flags & IEEE80211_RX_RA_MATCH) {
rx->local->dot11FrameDuplicateCount++;
rx->sta->num_duplicates++;
}
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
} else
- rx->sta->last_seq_ctrl[rx->u.rx.queue] = hdr->seq_ctrl;
+ rx->sta->last_seq_ctrl[rx->queue] = hdr->seq_ctrl;
}
if (unlikely(rx->skb->len < 16)) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_short);
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
}
- if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- rx->skb->pkt_type = PACKET_OTHERHOST;
- else if (compare_ether_addr(rx->dev->dev_addr, hdr->addr1) == 0)
- rx->skb->pkt_type = PACKET_HOST;
- else if (is_multicast_ether_addr(hdr->addr1)) {
- if (is_broadcast_ether_addr(hdr->addr1))
- rx->skb->pkt_type = PACKET_BROADCAST;
- else
- rx->skb->pkt_type = PACKET_MULTICAST;
- } else
- rx->skb->pkt_type = PACKET_OTHERHOST;
-
/* Drop disallowed frame classes based on STA auth/assoc state;
* IEEE 802.11, Chap 5.5.
*
@@ -407,34 +476,38 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
* deauth/disassoc frames when needed. In addition, hostapd is
* responsible for filtering on both auth and assoc states.
*/
+
+ if (ieee80211_vif_is_mesh(&rx->sdata->vif))
+ return ieee80211_rx_mesh_check(rx);
+
if (unlikely(((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA ||
((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL &&
(rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) &&
- rx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+ rx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
(!rx->sta || !(rx->sta->flags & WLAN_STA_ASSOC)))) {
if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
!(rx->fc & IEEE80211_FCTL_TODS) &&
(rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
- || !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
+ || !(rx->flags & IEEE80211_RX_RA_MATCH)) {
/* Drop IBSS frames and frames for other hosts
* silently. */
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
}
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
}
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
int keyidx;
int hdrlen;
- ieee80211_txrx_result result = TXRX_DROP;
+ ieee80211_rx_result result = RX_DROP_UNUSABLE;
struct ieee80211_key *stakey = NULL;
/*
@@ -464,14 +537,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
*/
if (!(rx->fc & IEEE80211_FCTL_PROTECTED))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
/*
* No point in finding a key and decrypting if the frame is neither
* addressed to us nor a multicast frame.
*/
- if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return TXRX_CONTINUE;
+ if (!(rx->flags & IEEE80211_RX_RA_MATCH))
+ return RX_CONTINUE;
if (rx->sta)
stakey = rcu_dereference(rx->sta->key);
@@ -488,14 +561,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
* we somehow allow the driver to tell us which key
* the hardware used if this flag is set?
*/
- if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
- (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED))
- return TXRX_CONTINUE;
+ if ((rx->status->flag & RX_FLAG_DECRYPTED) &&
+ (rx->status->flag & RX_FLAG_IV_STRIPPED))
+ return RX_CONTINUE;
hdrlen = ieee80211_get_hdrlen(rx->fc);
if (rx->skb->len < 8 + hdrlen)
- return TXRX_DROP; /* TODO: count this? */
+ return RX_DROP_UNUSABLE; /* TODO: count this? */
/*
* no need to call ieee80211_wep_get_keyidx,
@@ -524,14 +597,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
printk(KERN_DEBUG "%s: RX protected frame,"
" but have no key\n", rx->dev->name);
#endif /* CONFIG_MAC80211_DEBUG */
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
}
/* Check for weak IVs if possible */
if (rx->sta && rx->key->conf.alg == ALG_WEP &&
((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
- (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) ||
- !(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) &&
+ (!(rx->status->flag & RX_FLAG_IV_STRIPPED) ||
+ !(rx->status->flag & RX_FLAG_DECRYPTED)) &&
ieee80211_wep_is_weak_iv(rx->skb, rx->key))
rx->sta->wep_weak_iv_count++;
@@ -548,7 +621,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
}
/* either the frame has been decrypted or will be dropped */
- rx->u.rx.status->flag |= RX_FLAG_DECRYPTED;
+ rx->status->flag |= RX_FLAG_DECRYPTED;
return result;
}
@@ -558,12 +631,12 @@ static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
struct ieee80211_sub_if_data *sdata;
DECLARE_MAC_BUF(mac);
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ sdata = sta->sdata;
if (sdata->bss)
atomic_inc(&sdata->bss->num_sta_ps);
sta->flags |= WLAN_STA_PS;
- sta->pspoll = 0;
+ sta->flags &= ~WLAN_STA_PSPOLL;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: STA %s aid %d enters power save mode\n",
dev->name, print_mac(mac, sta->addr), sta->aid);
@@ -579,21 +652,21 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
struct ieee80211_tx_packet_data *pkt_data;
DECLARE_MAC_BUF(mac);
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ sdata = sta->sdata;
+
if (sdata->bss)
atomic_dec(&sdata->bss->num_sta_ps);
- sta->flags &= ~(WLAN_STA_PS | WLAN_STA_TIM);
- sta->pspoll = 0;
- if (!skb_queue_empty(&sta->ps_tx_buf)) {
- if (local->ops->set_tim)
- local->ops->set_tim(local_to_hw(local), sta->aid, 0);
- if (sdata->bss)
- bss_tim_clear(local, sdata->bss, sta->aid);
- }
+
+ sta->flags &= ~(WLAN_STA_PS | WLAN_STA_PSPOLL);
+
+ if (!skb_queue_empty(&sta->ps_tx_buf))
+ sta_info_clear_tim_bit(sta);
+
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "%s: STA %s aid %d exits power save mode\n",
dev->name, print_mac(mac, sta->addr), sta->aid);
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+
/* Send all buffered frames to the station */
while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
@@ -617,47 +690,50 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
return sent;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
{
struct sta_info *sta = rx->sta;
struct net_device *dev = rx->dev;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
if (!sta)
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
/* Update last_rx only for IBSS packets which are for the current
* BSSID to avoid keeping the current IBSS network alive in cases where
* other STAs are using different BSSID. */
- if (rx->sdata->type == IEEE80211_IF_TYPE_IBSS) {
- u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len);
+ if (rx->sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
+ IEEE80211_IF_TYPE_IBSS);
if (compare_ether_addr(bssid, rx->sdata->u.sta.bssid) == 0)
sta->last_rx = jiffies;
} else
if (!is_multicast_ether_addr(hdr->addr1) ||
- rx->sdata->type == IEEE80211_IF_TYPE_STA) {
+ rx->sdata->vif.type == IEEE80211_IF_TYPE_STA) {
/* Update last_rx only for unicast frames in order to prevent
* the Probe Request frames (the only broadcast frames from a
* STA in infrastructure mode) from keeping a connection alive.
+ * Mesh beacons will update last_rx when if they are found to
+ * match the current local configuration when processed.
*/
sta->last_rx = jiffies;
}
- if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return TXRX_CONTINUE;
+ if (!(rx->flags & IEEE80211_RX_RA_MATCH))
+ return RX_CONTINUE;
sta->rx_fragments++;
sta->rx_bytes += rx->skb->len;
- sta->last_rssi = rx->u.rx.status->ssi;
- sta->last_signal = rx->u.rx.status->signal;
- sta->last_noise = rx->u.rx.status->noise;
+ sta->last_rssi = rx->status->ssi;
+ sta->last_signal = rx->status->signal;
+ sta->last_noise = rx->status->noise;
if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) {
/* Change STA power saving mode only in the end of a frame
* exchange sequence */
if ((sta->flags & WLAN_STA_PS) && !(rx->fc & IEEE80211_FCTL_PM))
- rx->u.rx.sent_ps_buffered += ap_sta_ps_end(dev, sta);
+ rx->sent_ps_buffered += ap_sta_ps_end(dev, sta);
else if (!(sta->flags & WLAN_STA_PS) &&
(rx->fc & IEEE80211_FCTL_PM))
ap_sta_ps_start(dev, sta);
@@ -672,10 +748,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
* as a dropped packed. */
sta->rx_packets++;
dev_kfree_skb(rx->skb);
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
} /* ieee80211_rx_h_sta_process */
static inline struct ieee80211_fragment_entry *
@@ -751,7 +827,7 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
compare_ether_addr(hdr->addr2, f_hdr->addr2) != 0)
continue;
- if (entry->first_frag_time + 2 * HZ < jiffies) {
+ if (time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
__skb_queue_purge(&entry->skb_list);
continue;
}
@@ -761,8 +837,8 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
return NULL;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr;
u16 sc;
@@ -788,27 +864,27 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
if (frag == 0) {
/* This is the first fragment of a new frame. */
entry = ieee80211_reassemble_add(rx->sdata, frag, seq,
- rx->u.rx.queue, &(rx->skb));
+ rx->queue, &(rx->skb));
if (rx->key && rx->key->conf.alg == ALG_CCMP &&
(rx->fc & IEEE80211_FCTL_PROTECTED)) {
/* Store CCMP PN so that we can verify that the next
* fragment has a sequential PN value. */
entry->ccmp = 1;
memcpy(entry->last_pn,
- rx->key->u.ccmp.rx_pn[rx->u.rx.queue],
+ rx->key->u.ccmp.rx_pn[rx->queue],
CCMP_PN_LEN);
}
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
/* This is a fragment for a frame that should already be pending in
* fragment cache. Add this fragment to the end of the pending entry.
*/
entry = ieee80211_reassemble_find(rx->sdata, rx->fc, frag, seq,
- rx->u.rx.queue, hdr);
+ rx->queue, hdr);
if (!entry) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
}
/* Verify that MPDUs within one MSDU have sequential PN values.
@@ -817,14 +893,14 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
int i;
u8 pn[CCMP_PN_LEN], *rpn;
if (!rx->key || rx->key->conf.alg != ALG_CCMP)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
memcpy(pn, entry->last_pn, CCMP_PN_LEN);
for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
pn[i]++;
if (pn[i])
break;
}
- rpn = rx->key->u.ccmp.rx_pn[rx->u.rx.queue];
+ rpn = rx->key->u.ccmp.rx_pn[rx->queue];
if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
if (net_ratelimit())
printk(KERN_DEBUG "%s: defrag: CCMP PN not "
@@ -835,7 +911,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
rpn[0], rpn[1], rpn[2], rpn[3], rpn[4],
rpn[5], pn[0], pn[1], pn[2], pn[3],
pn[4], pn[5]);
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
memcpy(entry->last_pn, pn, CCMP_PN_LEN);
}
@@ -846,7 +922,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
entry->extra_len += rx->skb->len;
if (rx->fc & IEEE80211_FCTL_MOREFRAGS) {
rx->skb = NULL;
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
rx->skb = __skb_dequeue(&entry->skb_list);
@@ -856,7 +932,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
GFP_ATOMIC))) {
I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
__skb_queue_purge(&entry->skb_list);
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
}
while ((skb = __skb_dequeue(&entry->skb_list))) {
@@ -865,7 +941,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
}
/* Complete frame has been reassembled - process it now */
- rx->flags |= IEEE80211_TXRXD_FRAGMENTED;
+ rx->flags |= IEEE80211_RX_FRAGMENTED;
out:
if (rx->sta)
@@ -874,12 +950,13 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
rx->local->dot11MulticastReceivedFrameCount++;
else
ieee80211_led_rx(rx->local);
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
struct sk_buff *skb;
int no_pending_pkts;
DECLARE_MAC_BUF(mac);
@@ -887,8 +964,12 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
if (likely(!rx->sta ||
(rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL ||
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PSPOLL ||
- !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)))
- return TXRX_CONTINUE;
+ !(rx->flags & IEEE80211_RX_RA_MATCH)))
+ return RX_CONTINUE;
+
+ if ((sdata->vif.type != IEEE80211_IF_TYPE_AP) &&
+ (sdata->vif.type != IEEE80211_IF_TYPE_VLAN))
+ return RX_DROP_UNUSABLE;
skb = skb_dequeue(&rx->sta->tx_filtered);
if (!skb) {
@@ -903,9 +984,11 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
struct ieee80211_hdr *hdr =
(struct ieee80211_hdr *) skb->data;
- /* tell TX path to send one frame even though the STA may
- * still remain is PS mode after this frame exchange */
- rx->sta->pspoll = 1;
+ /*
+ * Tell TX path to send one frame even though the STA may
+ * still remain is PS mode after this frame exchange.
+ */
+ rx->sta->flags |= WLAN_STA_PSPOLL;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "STA %s aid %d: PS Poll (entries after %d)\n",
@@ -915,46 +998,45 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
/* Use MoreData flag to indicate whether there are more
* buffered frames for this STA */
- if (no_pending_pkts) {
+ if (no_pending_pkts)
hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
- rx->sta->flags &= ~WLAN_STA_TIM;
- } else
+ else
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
dev_queue_xmit(skb);
- if (no_pending_pkts) {
- if (rx->local->ops->set_tim)
- rx->local->ops->set_tim(local_to_hw(rx->local),
- rx->sta->aid, 0);
- if (rx->sdata->bss)
- bss_tim_clear(rx->local, rx->sdata->bss, rx->sta->aid);
- }
+ if (no_pending_pkts)
+ sta_info_clear_tim_bit(rx->sta);
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
- } else if (!rx->u.rx.sent_ps_buffered) {
+ } else if (!rx->sent_ps_buffered) {
+ /*
+ * FIXME: This can be the result of a race condition between
+ * us expiring a frame and the station polling for it.
+ * Should we send it a null-func frame indicating we
+ * have nothing buffered for it?
+ */
printk(KERN_DEBUG "%s: STA %s sent PS Poll even "
"though there is no buffered frames for it\n",
rx->dev->name, print_mac(mac, rx->sta->addr));
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
-
}
- /* Free PS Poll skb here instead of returning TXRX_DROP that would
+ /* Free PS Poll skb here instead of returning RX_DROP that would
* count as an dropped frame. */
dev_kfree_skb(rx->skb);
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx)
{
u16 fc = rx->fc;
u8 *data = rx->skb->data;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data;
if (!WLAN_FC_IS_QOS_DATA(fc))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
/* remove the qos control field, update frame type and meta-data */
memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2);
@@ -963,25 +1045,17 @@ ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx)
rx->fc = fc &= ~IEEE80211_STYPE_QOS_DATA;
hdr->frame_control = cpu_to_le16(fc);
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
static int
-ieee80211_drop_802_1x_pae(struct ieee80211_txrx_data *rx, int hdrlen)
+ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
{
- if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb, hdrlen) &&
- rx->sdata->type != IEEE80211_IF_TYPE_STA &&
- (rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return 0;
-
- if (unlikely(rx->sdata->ieee802_1x &&
- (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
- (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)) &&
- !ieee80211_is_eapol(rx->skb, hdrlen))) {
+ if (unlikely(!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED))) {
#ifdef CONFIG_MAC80211_DEBUG
- printk(KERN_DEBUG "%s: dropped frame "
- "(unauthorized port)\n", rx->dev->name);
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped frame "
+ "(unauthorized port)\n", rx->dev->name);
#endif /* CONFIG_MAC80211_DEBUG */
return -EACCES;
}
@@ -990,39 +1064,34 @@ ieee80211_drop_802_1x_pae(struct ieee80211_txrx_data *rx, int hdrlen)
}
static int
-ieee80211_drop_unencrypted(struct ieee80211_txrx_data *rx, int hdrlen)
+ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx)
{
/*
* Pass through unencrypted frames if the hardware has
* decrypted them already.
*/
- if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED)
+ if (rx->status->flag & RX_FLAG_DECRYPTED)
return 0;
/* Drop unencrypted frames if key is set. */
if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
(rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
- (rx->key || rx->sdata->drop_unencrypted) &&
- (rx->sdata->eapol == 0 ||
- !ieee80211_is_eapol(rx->skb, hdrlen)))) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
- "encryption\n", rx->dev->name);
+ (rx->key || rx->sdata->drop_unencrypted)))
return -EACCES;
- }
+
return 0;
}
static int
-ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
+ieee80211_data_to_8023(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
u16 fc, hdrlen, ethertype;
u8 *payload;
u8 dst[ETH_ALEN];
- u8 src[ETH_ALEN];
+ u8 src[ETH_ALEN] __aligned(2);
struct sk_buff *skb = rx->skb;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
DECLARE_MAC_BUF(mac);
@@ -1037,6 +1106,21 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
hdrlen = ieee80211_get_hdrlen(fc);
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ int meshhdrlen = ieee80211_get_mesh_hdrlen(
+ (struct ieee80211s_hdr *) (skb->data + hdrlen));
+ /* Copy on cb:
+ * - mesh header: to be used for mesh forwarding
+ * decision. It will also be used as mesh header template at
+ * tx.c:ieee80211_subif_start_xmit() if interface
+ * type is mesh and skb->pkt_type == PACKET_OTHERHOST
+ * - ta: to be used if a RERR needs to be sent.
+ */
+ memcpy(skb->cb, skb->data + hdrlen, meshhdrlen);
+ memcpy(MESH_PREQ(skb), hdr->addr2, ETH_ALEN);
+ hdrlen += meshhdrlen;
+ }
+
/* convert IEEE 802.11 header + possible LLC headers into Ethernet
* header
* IEEE 802.11 address fields:
@@ -1053,8 +1137,8 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
memcpy(dst, hdr->addr3, ETH_ALEN);
memcpy(src, hdr->addr2, ETH_ALEN);
- if (unlikely(sdata->type != IEEE80211_IF_TYPE_AP &&
- sdata->type != IEEE80211_IF_TYPE_VLAN)) {
+ if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_AP &&
+ sdata->vif.type != IEEE80211_IF_TYPE_VLAN)) {
if (net_ratelimit())
printk(KERN_DEBUG "%s: dropped ToDS frame "
"(BSSID=%s SA=%s DA=%s)\n",
@@ -1070,9 +1154,10 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
memcpy(dst, hdr->addr3, ETH_ALEN);
memcpy(src, hdr->addr4, ETH_ALEN);
- if (unlikely(sdata->type != IEEE80211_IF_TYPE_WDS)) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped FromDS&ToDS "
+ if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_WDS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) {
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped FromDS&ToDS "
"frame (RA=%s TA=%s DA=%s SA=%s)\n",
rx->dev->name,
print_mac(mac, hdr->addr1),
@@ -1087,7 +1172,7 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
memcpy(dst, hdr->addr1, ETH_ALEN);
memcpy(src, hdr->addr3, ETH_ALEN);
- if (sdata->type != IEEE80211_IF_TYPE_STA ||
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA ||
(is_multicast_ether_addr(dst) &&
!compare_ether_addr(src, dev->dev_addr)))
return -1;
@@ -1097,7 +1182,7 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
memcpy(dst, hdr->addr1, ETH_ALEN);
memcpy(src, hdr->addr2, ETH_ALEN);
- if (sdata->type != IEEE80211_IF_TYPE_IBSS) {
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: dropped IBSS frame "
"(DA=%s SA=%s BSSID=%s)\n",
@@ -1133,6 +1218,7 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
} else {
struct ethhdr *ehdr;
__be16 len;
+
skb_pull(skb, hdrlen);
len = htons(skb->len);
ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
@@ -1143,44 +1229,103 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx)
return 0;
}
+/*
+ * requires that rx->skb is a frame with ethernet header
+ */
+static bool ieee80211_frame_allowed(struct ieee80211_rx_data *rx)
+{
+ static const u8 pae_group_addr[ETH_ALEN] __aligned(2)
+ = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x03 };
+ struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
+
+ /*
+ * Allow EAPOL frames to us/the PAE group address regardless
+ * of whether the frame was encrypted or not.
+ */
+ if (ehdr->h_proto == htons(ETH_P_PAE) &&
+ (compare_ether_addr(ehdr->h_dest, rx->dev->dev_addr) == 0 ||
+ compare_ether_addr(ehdr->h_dest, pae_group_addr) == 0))
+ return true;
+
+ if (ieee80211_802_1x_port_control(rx) ||
+ ieee80211_drop_unencrypted(rx))
+ return false;
+
+ return true;
+}
+
+/*
+ * requires that rx->skb is a frame with ethernet header
+ */
static void
-ieee80211_deliver_skb(struct ieee80211_txrx_data *rx)
+ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
struct ieee80211_local *local = rx->local;
struct sk_buff *skb, *xmit_skb;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
+ struct sta_info *dsta;
skb = rx->skb;
xmit_skb = NULL;
- if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP
- || sdata->type == IEEE80211_IF_TYPE_VLAN) &&
- (rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
- if (is_multicast_ether_addr(skb->data)) {
- /* send multicast frames both to higher layers in
- * local net stack and back to the wireless media */
+ if (local->bridge_packets && (sdata->vif.type == IEEE80211_IF_TYPE_AP ||
+ sdata->vif.type == IEEE80211_IF_TYPE_VLAN) &&
+ (rx->flags & IEEE80211_RX_RA_MATCH)) {
+ if (is_multicast_ether_addr(ehdr->h_dest)) {
+ /*
+ * send multicast frames both to higher layers in
+ * local net stack and back to the wireless medium
+ */
xmit_skb = skb_copy(skb, GFP_ATOMIC);
if (!xmit_skb && net_ratelimit())
printk(KERN_DEBUG "%s: failed to clone "
"multicast frame\n", dev->name);
} else {
- struct sta_info *dsta;
dsta = sta_info_get(local, skb->data);
- if (dsta && !dsta->dev) {
- if (net_ratelimit())
- printk(KERN_DEBUG "Station with null "
- "dev structure!\n");
- } else if (dsta && dsta->dev == dev) {
- /* Destination station is associated to this
- * AP, so send the frame directly to it and
- * do not pass the frame to local net stack.
+ if (dsta && dsta->sdata->dev == dev) {
+ /*
+ * The destination station is associated to
+ * this AP (in this VLAN), so send the frame
+ * directly to it and do not pass it to local
+ * net stack.
*/
xmit_skb = skb;
skb = NULL;
}
- if (dsta)
- sta_info_put(dsta);
+ }
+ }
+
+ /* Mesh forwarding */
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ u8 *mesh_ttl = &((struct ieee80211s_hdr *)skb->cb)->ttl;
+ (*mesh_ttl)--;
+
+ if (is_multicast_ether_addr(skb->data)) {
+ if (*mesh_ttl > 0) {
+ xmit_skb = skb_copy(skb, GFP_ATOMIC);
+ if (xmit_skb)
+ xmit_skb->pkt_type = PACKET_OTHERHOST;
+ else if (net_ratelimit())
+ printk(KERN_DEBUG "%s: failed to clone "
+ "multicast frame\n", dev->name);
+ } else
+ IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
+ dropped_frames_ttl);
+ } else if (skb->pkt_type != PACKET_OTHERHOST &&
+ compare_ether_addr(dev->dev_addr, skb->data) != 0) {
+ if (*mesh_ttl == 0) {
+ IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta,
+ dropped_frames_ttl);
+ dev_kfree_skb(skb);
+ skb = NULL;
+ } else {
+ xmit_skb = skb;
+ xmit_skb->pkt_type = PACKET_OTHERHOST;
+ if (!(dev->flags & IFF_PROMISC))
+ skb = NULL;
+ }
}
}
@@ -1193,15 +1338,15 @@ ieee80211_deliver_skb(struct ieee80211_txrx_data *rx)
if (xmit_skb) {
/* send to wireless media */
- xmit_skb->protocol = __constant_htons(ETH_P_802_3);
- skb_set_network_header(xmit_skb, 0);
- skb_set_mac_header(xmit_skb, 0);
+ xmit_skb->protocol = htons(ETH_P_802_3);
+ skb_reset_network_header(xmit_skb);
+ skb_reset_mac_header(xmit_skb);
dev_queue_xmit(xmit_skb);
}
}
-static ieee80211_txrx_result
-ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
struct ieee80211_local *local = rx->local;
@@ -1217,17 +1362,17 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
fc = rx->fc;
if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
- if (!(rx->flags & IEEE80211_TXRXD_RX_AMSDU))
- return TXRX_CONTINUE;
+ if (!(rx->flags & IEEE80211_RX_AMSDU))
+ return RX_CONTINUE;
err = ieee80211_data_to_8023(rx);
if (unlikely(err))
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
skb->dev = dev;
@@ -1238,7 +1383,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
/* skip the wrapping header */
eth = (struct ethhdr *) skb_pull(skb, sizeof(struct ethhdr));
if (!eth)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
while (skb != frame) {
u8 padding;
@@ -1252,8 +1397,8 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
padding = ((4 - subframe_len) & 0x3);
/* the last MSDU has no padding */
if (subframe_len > remaining) {
- printk(KERN_DEBUG "%s: wrong buffer size", dev->name);
- return TXRX_DROP;
+ printk(KERN_DEBUG "%s: wrong buffer size\n", dev->name);
+ return RX_DROP_UNUSABLE;
}
skb_pull(skb, sizeof(struct ethhdr));
@@ -1265,7 +1410,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
subframe_len);
if (frame == NULL)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
skb_reserve(frame, local->hw.extra_tx_headroom +
sizeof(struct ethhdr));
@@ -1275,76 +1420,71 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
eth = (struct ethhdr *) skb_pull(skb, ntohs(len) +
padding);
if (!eth) {
- printk(KERN_DEBUG "%s: wrong buffer size ",
+ printk(KERN_DEBUG "%s: wrong buffer size\n",
dev->name);
dev_kfree_skb(frame);
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
}
- skb_set_network_header(frame, 0);
+ skb_reset_network_header(frame);
frame->dev = dev;
frame->priority = skb->priority;
rx->skb = frame;
- if ((ieee80211_drop_802_1x_pae(rx, 0)) ||
- (ieee80211_drop_unencrypted(rx, 0))) {
- if (skb == frame) /* last frame */
- return TXRX_DROP;
- dev_kfree_skb(frame);
- continue;
- }
-
payload = frame->data;
ethertype = (payload[6] << 8) | payload[7];
if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
- ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
- compare_ether_addr(payload,
- bridge_tunnel_header) == 0)) {
+ ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+ compare_ether_addr(payload,
+ bridge_tunnel_header) == 0)) {
/* remove RFC1042 or Bridge-Tunnel
* encapsulation and replace EtherType */
skb_pull(frame, 6);
memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
} else {
- memcpy(skb_push(frame, sizeof(__be16)), &len,
- sizeof(__be16));
+ memcpy(skb_push(frame, sizeof(__be16)),
+ &len, sizeof(__be16));
memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
}
+ if (!ieee80211_frame_allowed(rx)) {
+ if (skb == frame) /* last frame */
+ return RX_DROP_UNUSABLE;
+ dev_kfree_skb(frame);
+ continue;
+ }
ieee80211_deliver_skb(rx);
}
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
{
struct net_device *dev = rx->dev;
struct ieee80211_sub_if_data *sdata;
u16 fc;
- int err, hdrlen;
+ int err;
fc = rx->fc;
if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
- return TXRX_DROP;
-
- hdrlen = ieee80211_get_hdrlen(fc);
-
- if ((ieee80211_drop_802_1x_pae(rx, hdrlen)) ||
- (ieee80211_drop_unencrypted(rx, hdrlen)))
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
err = ieee80211_data_to_8023(rx);
if (unlikely(err))
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
+
+ if (!ieee80211_frame_allowed(rx))
+ return RX_DROP_MONITOR;
rx->skb->dev = dev;
@@ -1354,74 +1494,76 @@ ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
ieee80211_deliver_skb(rx);
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
-static ieee80211_txrx_result
-ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
+static ieee80211_rx_result
+ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
{
- struct ieee80211_sub_if_data *sdata;
-
- if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return TXRX_DROP;
+ struct ieee80211_local *local = rx->local;
+ struct ieee80211_hw *hw = &local->hw;
+ struct sk_buff *skb = rx->skb;
+ struct ieee80211_bar *bar = (struct ieee80211_bar *) skb->data;
+ struct tid_ampdu_rx *tid_agg_rx;
+ u16 start_seq_num;
+ u16 tid;
+
+ if (likely((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL))
+ return RX_CONTINUE;
+
+ if ((rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BACK_REQ) {
+ if (!rx->sta)
+ return RX_CONTINUE;
+ tid = le16_to_cpu(bar->control) >> 12;
+ if (rx->sta->ampdu_mlme.tid_state_rx[tid]
+ != HT_AGG_STATE_OPERATIONAL)
+ return RX_CONTINUE;
+ tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid];
+
+ start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
+
+ /* reset session timer */
+ if (tid_agg_rx->timeout) {
+ unsigned long expires =
+ jiffies + (tid_agg_rx->timeout / 1000) * HZ;
+ mod_timer(&tid_agg_rx->session_timer, expires);
+ }
- sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
- if ((sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) &&
- !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
- ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status);
- else
- return TXRX_DROP;
+ /* manage reordering buffer according to requested */
+ /* sequence number */
+ rcu_read_lock();
+ ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, NULL,
+ start_seq_num, 1);
+ rcu_read_unlock();
+ return RX_DROP_UNUSABLE;
+ }
- return TXRX_QUEUED;
+ return RX_CONTINUE;
}
-static inline ieee80211_txrx_result __ieee80211_invoke_rx_handlers(
- struct ieee80211_local *local,
- ieee80211_rx_handler *handlers,
- struct ieee80211_txrx_data *rx,
- struct sta_info *sta)
+static ieee80211_rx_result
+ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
{
- ieee80211_rx_handler *handler;
- ieee80211_txrx_result res = TXRX_DROP;
-
- for (handler = handlers; *handler != NULL; handler++) {
- res = (*handler)(rx);
+ struct ieee80211_sub_if_data *sdata;
- switch (res) {
- case TXRX_CONTINUE:
- continue;
- case TXRX_DROP:
- I802_DEBUG_INC(local->rx_handlers_drop);
- if (sta)
- sta->rx_dropped++;
- break;
- case TXRX_QUEUED:
- I802_DEBUG_INC(local->rx_handlers_queued);
- break;
- }
- break;
- }
+ if (!(rx->flags & IEEE80211_RX_RA_MATCH))
+ return RX_DROP_MONITOR;
- if (res == TXRX_DROP)
- dev_kfree_skb(rx->skb);
- return res;
-}
+ sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+ if ((sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS ||
+ sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) &&
+ !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
+ ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->status);
+ else
+ return RX_DROP_MONITOR;
-static inline void ieee80211_invoke_rx_handlers(struct ieee80211_local *local,
- ieee80211_rx_handler *handlers,
- struct ieee80211_txrx_data *rx,
- struct sta_info *sta)
-{
- if (__ieee80211_invoke_rx_handlers(local, handlers, rx, sta) ==
- TXRX_CONTINUE)
- dev_kfree_skb(rx->skb);
+ return RX_QUEUED;
}
static void ieee80211_rx_michael_mic_report(struct net_device *dev,
struct ieee80211_hdr *hdr,
- struct sta_info *sta,
- struct ieee80211_txrx_data *rx)
+ struct ieee80211_rx_data *rx)
{
int keyidx, hdrlen;
DECLARE_MAC_BUF(mac);
@@ -1439,7 +1581,7 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
dev->name, print_mac(mac, hdr->addr2),
print_mac(mac2, hdr->addr1), keyidx);
- if (!sta) {
+ if (!rx->sta) {
/*
* Some hardware seem to generate incorrect Michael MIC
* reports; ignore them to avoid triggering countermeasures.
@@ -1459,7 +1601,7 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
goto ignore;
}
- if (rx->sdata->type == IEEE80211_IF_TYPE_AP && keyidx) {
+ if (rx->sdata->vif.type == IEEE80211_IF_TYPE_AP && keyidx) {
/*
* APs with pairwise keys should never receive Michael MIC
* errors for non-zero keyidx because these are reserved for
@@ -1491,7 +1633,89 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
rx->skb = NULL;
}
-ieee80211_rx_handler ieee80211_rx_handlers[] =
+/* TODO: use IEEE80211_RX_FRAGMENTED */
+static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_local *local = rx->local;
+ struct ieee80211_rtap_hdr {
+ struct ieee80211_radiotap_header hdr;
+ u8 flags;
+ u8 rate;
+ __le16 chan_freq;
+ __le16 chan_flags;
+ } __attribute__ ((packed)) *rthdr;
+ struct sk_buff *skb = rx->skb, *skb2;
+ struct net_device *prev_dev = NULL;
+ struct ieee80211_rx_status *status = rx->status;
+
+ if (rx->flags & IEEE80211_RX_CMNTR_REPORTED)
+ goto out_free_skb;
+
+ if (skb_headroom(skb) < sizeof(*rthdr) &&
+ pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC))
+ goto out_free_skb;
+
+ rthdr = (void *)skb_push(skb, sizeof(*rthdr));
+ memset(rthdr, 0, sizeof(*rthdr));
+ rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
+ rthdr->hdr.it_present =
+ cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
+ (1 << IEEE80211_RADIOTAP_RATE) |
+ (1 << IEEE80211_RADIOTAP_CHANNEL));
+
+ rthdr->rate = rx->rate->bitrate / 5;
+ rthdr->chan_freq = cpu_to_le16(status->freq);
+
+ if (status->band == IEEE80211_BAND_5GHZ)
+ rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_OFDM |
+ IEEE80211_CHAN_5GHZ);
+ else
+ rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_DYN |
+ IEEE80211_CHAN_2GHZ);
+
+ skb_set_mac_header(skb, 0);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = htons(ETH_P_802_2);
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!netif_running(sdata->dev))
+ continue;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR ||
+ !(sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
+ continue;
+
+ if (prev_dev) {
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2) {
+ skb2->dev = prev_dev;
+ netif_rx(skb2);
+ }
+ }
+
+ prev_dev = sdata->dev;
+ sdata->stats.rx_packets++;
+ sdata->stats.rx_bytes += skb->len;
+ }
+
+ if (prev_dev) {
+ skb->dev = prev_dev;
+ netif_rx(skb);
+ skb = NULL;
+ } else
+ goto out_free_skb;
+
+ rx->flags |= IEEE80211_RX_CMNTR_REPORTED;
+ return;
+
+ out_free_skb:
+ dev_kfree_skb(skb);
+}
+
+typedef ieee80211_rx_result (*ieee80211_rx_handler)(struct ieee80211_rx_data *);
+static ieee80211_rx_handler ieee80211_rx_handlers[] =
{
ieee80211_rx_h_if_stats,
ieee80211_rx_h_passive_scan,
@@ -1508,51 +1732,106 @@ ieee80211_rx_handler ieee80211_rx_handlers[] =
ieee80211_rx_h_remove_qos_control,
ieee80211_rx_h_amsdu,
ieee80211_rx_h_data,
+ ieee80211_rx_h_ctrl,
ieee80211_rx_h_mgmt,
NULL
};
+static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_rx_data *rx,
+ struct sk_buff *skb)
+{
+ ieee80211_rx_handler *handler;
+ ieee80211_rx_result res = RX_DROP_MONITOR;
+
+ rx->skb = skb;
+ rx->sdata = sdata;
+ rx->dev = sdata->dev;
+
+ for (handler = ieee80211_rx_handlers; *handler != NULL; handler++) {
+ res = (*handler)(rx);
+
+ switch (res) {
+ case RX_CONTINUE:
+ continue;
+ case RX_DROP_UNUSABLE:
+ case RX_DROP_MONITOR:
+ I802_DEBUG_INC(sdata->local->rx_handlers_drop);
+ if (rx->sta)
+ rx->sta->rx_dropped++;
+ break;
+ case RX_QUEUED:
+ I802_DEBUG_INC(sdata->local->rx_handlers_queued);
+ break;
+ }
+ break;
+ }
+
+ switch (res) {
+ case RX_CONTINUE:
+ case RX_DROP_MONITOR:
+ ieee80211_rx_cooked_monitor(rx);
+ break;
+ case RX_DROP_UNUSABLE:
+ dev_kfree_skb(rx->skb);
+ break;
+ }
+}
+
/* main receive path */
static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
- u8 *bssid, struct ieee80211_txrx_data *rx,
+ u8 *bssid, struct ieee80211_rx_data *rx,
struct ieee80211_hdr *hdr)
{
int multicast = is_multicast_ether_addr(hdr->addr1);
- switch (sdata->type) {
+ switch (sdata->vif.type) {
case IEEE80211_IF_TYPE_STA:
if (!bssid)
return 0;
if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
- if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
+ if (!(rx->flags & IEEE80211_RX_IN_SCAN))
return 0;
- rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
} else if (!multicast &&
compare_ether_addr(sdata->dev->dev_addr,
hdr->addr1) != 0) {
if (!(sdata->dev->flags & IFF_PROMISC))
return 0;
- rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
}
break;
case IEEE80211_IF_TYPE_IBSS:
if (!bssid)
return 0;
- if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
- if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
+ if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
+ (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
+ return 1;
+ else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
+ if (!(rx->flags & IEEE80211_RX_IN_SCAN))
return 0;
- rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
} else if (!multicast &&
compare_ether_addr(sdata->dev->dev_addr,
hdr->addr1) != 0) {
if (!(sdata->dev->flags & IFF_PROMISC))
return 0;
- rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
} else if (!rx->sta)
rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
bssid, hdr->addr2);
break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ if (!multicast &&
+ compare_ether_addr(sdata->dev->dev_addr,
+ hdr->addr1) != 0) {
+ if (!(sdata->dev->flags & IFF_PROMISC))
+ return 0;
+
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
+ }
+ break;
case IEEE80211_IF_TYPE_VLAN:
case IEEE80211_IF_TYPE_AP:
if (!bssid) {
@@ -1561,12 +1840,12 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
return 0;
} else if (!ieee80211_bssid_match(bssid,
sdata->dev->dev_addr)) {
- if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
+ if (!(rx->flags & IEEE80211_RX_IN_SCAN))
return 0;
- rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
+ rx->flags &= ~IEEE80211_RX_RA_MATCH;
}
if (sdata->dev == sdata->local->mdev &&
- !(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
+ !(rx->flags & IEEE80211_RX_IN_SCAN))
/* do not receive anything via
* master device when not scanning */
return 0;
@@ -1591,99 +1870,70 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
}
/*
- * This is the receive path handler. It is called by a low level driver when an
- * 802.11 MPDU is received from the hardware.
+ * This is the actual Rx frames handler. as it blongs to Rx path it must
+ * be called with rcu_read_lock protection.
*/
-void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_rx_status *status)
+static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
+ struct sk_buff *skb,
+ struct ieee80211_rx_status *status,
+ u32 load,
+ struct ieee80211_rate *rate)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
- struct sta_info *sta;
struct ieee80211_hdr *hdr;
- struct ieee80211_txrx_data rx;
+ struct ieee80211_rx_data rx;
u16 type;
- int prepres;
+ int prepares;
struct ieee80211_sub_if_data *prev = NULL;
struct sk_buff *skb_new;
u8 *bssid;
- /*
- * key references and virtual interfaces are protected using RCU
- * and this requires that we are in a read-side RCU section during
- * receive processing
- */
- rcu_read_lock();
-
- /*
- * Frames with failed FCS/PLCP checksum are not returned,
- * all other frames are returned without radiotap header
- * if it was previously present.
- * Also, frames with less than 16 bytes are dropped.
- */
- skb = ieee80211_rx_monitor(local, skb, status);
- if (!skb) {
- rcu_read_unlock();
- return;
- }
-
hdr = (struct ieee80211_hdr *) skb->data;
memset(&rx, 0, sizeof(rx));
rx.skb = skb;
rx.local = local;
- rx.u.rx.status = status;
+ rx.status = status;
+ rx.load = load;
+ rx.rate = rate;
rx.fc = le16_to_cpu(hdr->frame_control);
type = rx.fc & IEEE80211_FCTL_FTYPE;
if (type == IEEE80211_FTYPE_DATA || type == IEEE80211_FTYPE_MGMT)
local->dot11ReceivedFragmentCount++;
- sta = rx.sta = sta_info_get(local, hdr->addr2);
- if (sta) {
- rx.dev = rx.sta->dev;
- rx.sdata = IEEE80211_DEV_TO_SUB_IF(rx.dev);
+ rx.sta = sta_info_get(local, hdr->addr2);
+ if (rx.sta) {
+ rx.sdata = rx.sta->sdata;
+ rx.dev = rx.sta->sdata->dev;
}
if ((status->flag & RX_FLAG_MMIC_ERROR)) {
- ieee80211_rx_michael_mic_report(local->mdev, hdr, sta, &rx);
- goto end;
+ ieee80211_rx_michael_mic_report(local->mdev, hdr, &rx);
+ return;
}
if (unlikely(local->sta_sw_scanning || local->sta_hw_scanning))
- rx.flags |= IEEE80211_TXRXD_RXIN_SCAN;
+ rx.flags |= IEEE80211_RX_IN_SCAN;
- if (__ieee80211_invoke_rx_handlers(local, local->rx_pre_handlers, &rx,
- sta) != TXRX_CONTINUE)
- goto end;
- skb = rx.skb;
+ ieee80211_parse_qos(&rx);
+ ieee80211_verify_ip_alignment(&rx);
- if (sta && !(sta->flags & (WLAN_STA_WDS | WLAN_STA_ASSOC_AP)) &&
- !atomic_read(&local->iff_promiscs) &&
- !is_multicast_ether_addr(hdr->addr1)) {
- rx.flags |= IEEE80211_TXRXD_RXRA_MATCH;
- ieee80211_invoke_rx_handlers(local, local->rx_handlers, &rx,
- rx.sta);
- sta_info_put(sta);
- rcu_read_unlock();
- return;
- }
-
- bssid = ieee80211_get_bssid(hdr, skb->len);
+ skb = rx.skb;
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (!netif_running(sdata->dev))
continue;
- if (sdata->type == IEEE80211_IF_TYPE_MNTR)
+ if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR)
continue;
- rx.flags |= IEEE80211_TXRXD_RXRA_MATCH;
- prepres = prepare_for_handlers(sdata, bssid, &rx, hdr);
- /* prepare_for_handlers can change sta */
- sta = rx.sta;
+ bssid = ieee80211_get_bssid(hdr, skb->len, sdata->vif.type);
+ rx.flags |= IEEE80211_RX_RA_MATCH;
+ prepares = prepare_for_handlers(sdata, bssid, &rx, hdr);
- if (!prepres)
+ if (!prepares)
continue;
/*
@@ -1706,32 +1956,266 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
if (!skb_new) {
if (net_ratelimit())
printk(KERN_DEBUG "%s: failed to copy "
- "multicast frame for %s",
+ "multicast frame for %s\n",
wiphy_name(local->hw.wiphy),
prev->dev->name);
continue;
}
- rx.skb = skb_new;
- rx.dev = prev->dev;
- rx.sdata = prev;
- ieee80211_invoke_rx_handlers(local, local->rx_handlers,
- &rx, sta);
+ rx.fc = le16_to_cpu(hdr->frame_control);
+ ieee80211_invoke_rx_handlers(prev, &rx, skb_new);
prev = sdata;
}
if (prev) {
- rx.skb = skb;
- rx.dev = prev->dev;
- rx.sdata = prev;
- ieee80211_invoke_rx_handlers(local, local->rx_handlers,
- &rx, sta);
+ rx.fc = le16_to_cpu(hdr->frame_control);
+ ieee80211_invoke_rx_handlers(prev, &rx, skb);
} else
dev_kfree_skb(skb);
+}
- end:
- rcu_read_unlock();
+#define SEQ_MODULO 0x1000
+#define SEQ_MASK 0xfff
- if (sta)
- sta_info_put(sta);
+static inline int seq_less(u16 sq1, u16 sq2)
+{
+ return (((sq1 - sq2) & SEQ_MASK) > (SEQ_MODULO >> 1));
+}
+
+static inline u16 seq_inc(u16 sq)
+{
+ return ((sq + 1) & SEQ_MASK);
+}
+
+static inline u16 seq_sub(u16 sq1, u16 sq2)
+{
+ return ((sq1 - sq2) & SEQ_MASK);
+}
+
+
+/*
+ * As it function blongs to Rx path it must be called with
+ * the proper rcu_read_lock protection for its flow.
+ */
+u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
+ struct tid_ampdu_rx *tid_agg_rx,
+ struct sk_buff *skb, u16 mpdu_seq_num,
+ int bar_req)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_rx_status status;
+ u16 head_seq_num, buf_size;
+ int index;
+ u32 pkt_load;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate;
+
+ buf_size = tid_agg_rx->buf_size;
+ head_seq_num = tid_agg_rx->head_seq_num;
+
+ /* frame with out of date sequence number */
+ if (seq_less(mpdu_seq_num, head_seq_num)) {
+ dev_kfree_skb(skb);
+ return 1;
+ }
+
+ /* if frame sequence number exceeds our buffering window size or
+ * block Ack Request arrived - release stored frames */
+ if ((!seq_less(mpdu_seq_num, head_seq_num + buf_size)) || (bar_req)) {
+ /* new head to the ordering buffer */
+ if (bar_req)
+ head_seq_num = mpdu_seq_num;
+ else
+ head_seq_num =
+ seq_inc(seq_sub(mpdu_seq_num, buf_size));
+ /* release stored frames up to new head to stack */
+ while (seq_less(tid_agg_rx->head_seq_num, head_seq_num)) {
+ index = seq_sub(tid_agg_rx->head_seq_num,
+ tid_agg_rx->ssn)
+ % tid_agg_rx->buf_size;
+
+ if (tid_agg_rx->reorder_buf[index]) {
+ /* release the reordered frames to stack */
+ memcpy(&status,
+ tid_agg_rx->reorder_buf[index]->cb,
+ sizeof(status));
+ sband = local->hw.wiphy->bands[status.band];
+ rate = &sband->bitrates[status.rate_idx];
+ pkt_load = ieee80211_rx_load_stats(local,
+ tid_agg_rx->reorder_buf[index],
+ &status, rate);
+ __ieee80211_rx_handle_packet(hw,
+ tid_agg_rx->reorder_buf[index],
+ &status, pkt_load, rate);
+ tid_agg_rx->stored_mpdu_num--;
+ tid_agg_rx->reorder_buf[index] = NULL;
+ }
+ tid_agg_rx->head_seq_num =
+ seq_inc(tid_agg_rx->head_seq_num);
+ }
+ if (bar_req)
+ return 1;
+ }
+
+ /* now the new frame is always in the range of the reordering */
+ /* buffer window */
+ index = seq_sub(mpdu_seq_num, tid_agg_rx->ssn)
+ % tid_agg_rx->buf_size;
+ /* check if we already stored this frame */
+ if (tid_agg_rx->reorder_buf[index]) {
+ dev_kfree_skb(skb);
+ return 1;
+ }
+
+ /* if arrived mpdu is in the right order and nothing else stored */
+ /* release it immediately */
+ if (mpdu_seq_num == tid_agg_rx->head_seq_num &&
+ tid_agg_rx->stored_mpdu_num == 0) {
+ tid_agg_rx->head_seq_num =
+ seq_inc(tid_agg_rx->head_seq_num);
+ return 0;
+ }
+
+ /* put the frame in the reordering buffer */
+ tid_agg_rx->reorder_buf[index] = skb;
+ tid_agg_rx->stored_mpdu_num++;
+ /* release the buffer until next missing frame */
+ index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn)
+ % tid_agg_rx->buf_size;
+ while (tid_agg_rx->reorder_buf[index]) {
+ /* release the reordered frame back to stack */
+ memcpy(&status, tid_agg_rx->reorder_buf[index]->cb,
+ sizeof(status));
+ sband = local->hw.wiphy->bands[status.band];
+ rate = &sband->bitrates[status.rate_idx];
+ pkt_load = ieee80211_rx_load_stats(local,
+ tid_agg_rx->reorder_buf[index],
+ &status, rate);
+ __ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index],
+ &status, pkt_load, rate);
+ tid_agg_rx->stored_mpdu_num--;
+ tid_agg_rx->reorder_buf[index] = NULL;
+ tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);
+ index = seq_sub(tid_agg_rx->head_seq_num,
+ tid_agg_rx->ssn) % tid_agg_rx->buf_size;
+ }
+ return 1;
+}
+
+static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
+ struct sk_buff *skb)
+{
+ struct ieee80211_hw *hw = &local->hw;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta;
+ struct tid_ampdu_rx *tid_agg_rx;
+ u16 fc, sc;
+ u16 mpdu_seq_num;
+ u8 ret = 0, *qc;
+ int tid;
+
+ sta = sta_info_get(local, hdr->addr2);
+ if (!sta)
+ return ret;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ /* filter the QoS data rx stream according to
+ * STA/TID and check if this STA/TID is on aggregation */
+ if (!WLAN_FC_IS_QOS_DATA(fc))
+ goto end_reorder;
+
+ qc = skb->data + ieee80211_get_hdrlen(fc) - QOS_CONTROL_LEN;
+ tid = qc[0] & QOS_CONTROL_TID_MASK;
+
+ if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
+ goto end_reorder;
+
+ tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
+ /* null data frames are excluded */
+ if (unlikely(fc & IEEE80211_STYPE_NULLFUNC))
+ goto end_reorder;
+
+ /* new un-ordered ampdu frame - process it */
+
+ /* reset session timer */
+ if (tid_agg_rx->timeout) {
+ unsigned long expires =
+ jiffies + (tid_agg_rx->timeout / 1000) * HZ;
+ mod_timer(&tid_agg_rx->session_timer, expires);
+ }
+
+ /* if this mpdu is fragmented - terminate rx aggregation session */
+ sc = le16_to_cpu(hdr->seq_ctrl);
+ if (sc & IEEE80211_SCTL_FRAG) {
+ ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr,
+ tid, 0, WLAN_REASON_QSTA_REQUIRE_SETUP);
+ ret = 1;
+ goto end_reorder;
+ }
+
+ /* according to mpdu sequence number deal with reordering buffer */
+ mpdu_seq_num = (sc & IEEE80211_SCTL_SEQ) >> 4;
+ ret = ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb,
+ mpdu_seq_num, 0);
+ end_reorder:
+ return ret;
+}
+
+/*
+ * This is the receive path handler. It is called by a low level driver when an
+ * 802.11 MPDU is received from the hardware.
+ */
+void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ieee80211_rx_status *status)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ u32 pkt_load;
+ struct ieee80211_rate *rate = NULL;
+ struct ieee80211_supported_band *sband;
+
+ if (status->band < 0 ||
+ status->band >= IEEE80211_NUM_BANDS) {
+ WARN_ON(1);
+ return;
+ }
+
+ sband = local->hw.wiphy->bands[status->band];
+
+ if (!sband ||
+ status->rate_idx < 0 ||
+ status->rate_idx >= sband->n_bitrates) {
+ WARN_ON(1);
+ return;
+ }
+
+ rate = &sband->bitrates[status->rate_idx];
+
+ /*
+ * key references and virtual interfaces are protected using RCU
+ * and this requires that we are in a read-side RCU section during
+ * receive processing
+ */
+ rcu_read_lock();
+
+ /*
+ * Frames with failed FCS/PLCP checksum are not returned,
+ * all other frames are returned without radiotap header
+ * if it was previously present.
+ * Also, frames with less than 16 bytes are dropped.
+ */
+ skb = ieee80211_rx_monitor(local, skb, status, rate);
+ if (!skb) {
+ rcu_read_unlock();
+ return;
+ }
+
+ pkt_load = ieee80211_rx_load_stats(local, skb, status, rate);
+ local->channel_use_raw += pkt_load;
+
+ if (!ieee80211_rx_reorder_ampdu(local, skb))
+ __ieee80211_rx_handle_packet(hw, skb, status, pkt_load, rate);
+
+ rcu_read_unlock();
}
EXPORT_SYMBOL(__ieee80211_rx);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index e849155..899c4dc 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -14,21 +14,58 @@
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
+#include <linux/timer.h>
+#include <linux/rtnetlink.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "sta_info.h"
#include "debugfs_sta.h"
+#include "mesh.h"
-/* Caller must hold local->sta_lock */
-static void sta_info_hash_add(struct ieee80211_local *local,
- struct sta_info *sta)
-{
- sta->hnext = local->sta_hash[STA_HASH(sta->addr)];
- local->sta_hash[STA_HASH(sta->addr)] = sta;
-}
-
+/**
+ * DOC: STA information lifetime rules
+ *
+ * STA info structures (&struct sta_info) are managed in a hash table
+ * for faster lookup and a list for iteration. They are managed using
+ * RCU, i.e. access to the list and hash table is protected by RCU.
+ *
+ * Upon allocating a STA info structure with sta_info_alloc(), the caller owns
+ * that structure. It must then either destroy it using sta_info_destroy()
+ * (which is pretty useless) or insert it into the hash table using
+ * sta_info_insert() which demotes the reference from ownership to a regular
+ * RCU-protected reference; if the function is called without protection by an
+ * RCU critical section the reference is instantly invalidated. Note that the
+ * caller may not do much with the STA info before inserting it, in particular,
+ * it may not start any mesh peer link management or add encryption keys.
+ *
+ * When the insertion fails (sta_info_insert()) returns non-zero), the
+ * structure will have been freed by sta_info_insert()!
+ *
+ * Because there are debugfs entries for each station, and adding those
+ * must be able to sleep, it is also possible to "pin" a station entry,
+ * that means it can be removed from the hash table but not be freed.
+ * See the comment in __sta_info_unlink() for more information, this is
+ * an internal capability only.
+ *
+ * In order to remove a STA info structure, the caller needs to first
+ * unlink it (sta_info_unlink()) from the list and hash tables and
+ * then destroy it; sta_info_destroy() will wait for an RCU grace period
+ * to elapse before actually freeing it. Due to the pinning and the
+ * possibility of multiple callers trying to remove the same STA info at
+ * the same time, sta_info_unlink() can clear the STA info pointer it is
+ * passed to indicate that the STA info is owned by somebody else now.
+ *
+ * If sta_info_unlink() did not clear the pointer then the caller owns
+ * the STA info structure now and is responsible of destroying it with
+ * a call to sta_info_destroy().
+ *
+ * In all other cases, there is no concept of ownership on a STA entry,
+ * each structure is owned by the global hash table/list until it is
+ * removed. All users of the structure need to be RCU protected so that
+ * the structure won't be freed before they are done using it.
+ */
/* Caller must hold local->sta_lock */
static int sta_info_hash_del(struct ieee80211_local *local,
@@ -40,206 +77,442 @@ static int sta_info_hash_del(struct ieee80211_local *local,
if (!s)
return -ENOENT;
if (s == sta) {
- local->sta_hash[STA_HASH(sta->addr)] = s->hnext;
+ rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)],
+ s->hnext);
return 0;
}
while (s->hnext && s->hnext != sta)
s = s->hnext;
if (s->hnext) {
- s->hnext = sta->hnext;
+ rcu_assign_pointer(s->hnext, sta->hnext);
return 0;
}
return -ENOENT;
}
-struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
+/* protected by RCU */
+static struct sta_info *__sta_info_find(struct ieee80211_local *local,
+ u8 *addr)
{
struct sta_info *sta;
- read_lock_bh(&local->sta_lock);
- sta = local->sta_hash[STA_HASH(addr)];
+ sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
while (sta) {
- if (memcmp(sta->addr, addr, ETH_ALEN) == 0) {
- __sta_info_get(sta);
+ if (compare_ether_addr(sta->addr, addr) == 0)
break;
- }
- sta = sta->hnext;
+ sta = rcu_dereference(sta->hnext);
}
- read_unlock_bh(&local->sta_lock);
-
return sta;
}
+
+struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
+{
+ return __sta_info_find(local, addr);
+}
EXPORT_SYMBOL(sta_info_get);
-int sta_info_min_txrate_get(struct ieee80211_local *local)
+struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
+ struct net_device *dev)
{
struct sta_info *sta;
- struct ieee80211_hw_mode *mode;
- int min_txrate = 9999999;
- int i;
-
- read_lock_bh(&local->sta_lock);
- mode = local->oper_hw_mode;
- for (i = 0; i < STA_HASH_SIZE; i++) {
- sta = local->sta_hash[i];
- while (sta) {
- if (sta->txrate < min_txrate)
- min_txrate = sta->txrate;
- sta = sta->hnext;
+ int i = 0;
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (dev && dev != sta->sdata->dev)
+ continue;
+ if (i < idx) {
+ ++i;
+ continue;
}
+ return sta;
}
- read_unlock_bh(&local->sta_lock);
- if (min_txrate == 9999999)
- min_txrate = 0;
- return mode->rates[min_txrate].rate;
+ return NULL;
}
+/**
+ * __sta_info_free - internal STA free helper
+ *
+ * @sta: STA info to free
+ *
+ * This function must undo everything done by sta_info_alloc()
+ * that may happen before sta_info_insert().
+ */
+static void __sta_info_free(struct ieee80211_local *local,
+ struct sta_info *sta)
+{
+ DECLARE_MAC_BUF(mbuf);
+
+ rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv);
+ rate_control_put(sta->rate_ctrl);
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Destroyed STA %s\n",
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+ kfree(sta);
+}
-static void sta_info_release(struct kref *kref)
+void sta_info_destroy(struct sta_info *sta)
{
- struct sta_info *sta = container_of(kref, struct sta_info, kref);
- struct ieee80211_local *local = sta->local;
+ struct ieee80211_local *local;
struct sk_buff *skb;
+ int i;
+
+ might_sleep();
+
+ if (!sta)
+ return;
+
+ local = sta->local;
+
+ rate_control_remove_sta_debugfs(sta);
+ ieee80211_sta_debugfs_remove(sta);
+
+#ifdef CONFIG_MAC80211_MESH
+ if (ieee80211_vif_is_mesh(&sta->sdata->vif))
+ mesh_plink_deactivate(sta);
+#endif
+
+ /*
+ * We have only unlinked the key, and actually destroying it
+ * may mean it is removed from hardware which requires that
+ * the key->sta pointer is still valid, so flush the key todo
+ * list here.
+ *
+ * ieee80211_key_todo() will synchronize_rcu() so after this
+ * nothing can reference this sta struct any more.
+ */
+ ieee80211_key_todo();
+
+#ifdef CONFIG_MAC80211_MESH
+ if (ieee80211_vif_is_mesh(&sta->sdata->vif))
+ del_timer_sync(&sta->plink_timer);
+#endif
- /* free sta structure; it has already been removed from
- * hash table etc. external structures. Make sure that all
- * buffered frames are release (one might have been added
- * after sta_info_free() was called). */
while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
local->total_ps_buffered--;
dev_kfree_skb_any(skb);
}
- while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+
+ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL)
dev_kfree_skb_any(skb);
+
+ for (i = 0; i < STA_TID_NUM; i++) {
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
+ if (sta->ampdu_mlme.tid_rx[i])
+ del_timer_sync(&sta->ampdu_mlme.tid_rx[i]->session_timer);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if (sta->ampdu_mlme.tid_tx[i])
+ del_timer_sync(&sta->ampdu_mlme.tid_tx[i]->addba_resp_timer);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
}
- rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv);
- rate_control_put(sta->rate_ctrl);
- kfree(sta);
+
+ __sta_info_free(local, sta);
}
-void sta_info_put(struct sta_info *sta)
+/* Caller must hold local->sta_lock */
+static void sta_info_hash_add(struct ieee80211_local *local,
+ struct sta_info *sta)
{
- kref_put(&sta->kref, sta_info_release);
+ sta->hnext = local->sta_hash[STA_HASH(sta->addr)];
+ rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)], sta);
}
-EXPORT_SYMBOL(sta_info_put);
-
-struct sta_info * sta_info_add(struct ieee80211_local *local,
- struct net_device *dev, u8 *addr, gfp_t gfp)
+struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
+ u8 *addr, gfp_t gfp)
{
+ struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- DECLARE_MAC_BUF(mac);
+ int i;
+ DECLARE_MAC_BUF(mbuf);
sta = kzalloc(sizeof(*sta), gfp);
if (!sta)
return NULL;
- kref_init(&sta->kref);
+ memcpy(sta->addr, addr, ETH_ALEN);
+ sta->local = local;
+ sta->sdata = sdata;
sta->rate_ctrl = rate_control_get(local->rate_ctrl);
- sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, gfp);
+ sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl,
+ gfp);
if (!sta->rate_ctrl_priv) {
rate_control_put(sta->rate_ctrl);
kfree(sta);
return NULL;
}
- memcpy(sta->addr, addr, ETH_ALEN);
- sta->local = local;
- sta->dev = dev;
+ spin_lock_init(&sta->ampdu_mlme.ampdu_rx);
+ spin_lock_init(&sta->ampdu_mlme.ampdu_tx);
+ for (i = 0; i < STA_TID_NUM; i++) {
+ /* timer_to_tid must be initialized with identity mapping to
+ * enable session_timer's data differentiation. refer to
+ * sta_rx_agg_session_timer_expired for useage */
+ sta->timer_to_tid[i] = i;
+ /* tid to tx queue: initialize according to HW (0 is valid) */
+ sta->tid_to_tx_q[i] = local->hw.queues;
+ /* rx */
+ sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE;
+ sta->ampdu_mlme.tid_rx[i] = NULL;
+ /* tx */
+ sta->ampdu_mlme.tid_state_tx[i] = HT_AGG_STATE_IDLE;
+ sta->ampdu_mlme.tid_tx[i] = NULL;
+ sta->ampdu_mlme.addba_req_num[i] = 0;
+ }
skb_queue_head_init(&sta->ps_tx_buf);
skb_queue_head_init(&sta->tx_filtered);
- __sta_info_get(sta); /* sta used by caller, decremented by
- * sta_info_put() */
- write_lock_bh(&local->sta_lock);
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: Allocated STA %s\n",
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+#ifdef CONFIG_MAC80211_MESH
+ sta->plink_state = PLINK_LISTEN;
+ spin_lock_init(&sta->plink_lock);
+ init_timer(&sta->plink_timer);
+#endif
+
+ return sta;
+}
+
+int sta_info_insert(struct sta_info *sta)
+{
+ struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = sta->sdata;
+ unsigned long flags;
+ int err = 0;
+ DECLARE_MAC_BUF(mac);
+
+ /*
+ * Can't be a WARN_ON because it can be triggered through a race:
+ * something inserts a STA (on one CPU) without holding the RTNL
+ * and another CPU turns off the net device.
+ */
+ if (unlikely(!netif_running(sdata->dev))) {
+ err = -ENETDOWN;
+ goto out_free;
+ }
+
+ WARN_ON(compare_ether_addr(sta->addr, sdata->dev->dev_addr) == 0 ||
+ is_multicast_ether_addr(sta->addr));
+ if (compare_ether_addr(sta->addr, sdata->dev->dev_addr) == 0 ||
+ is_multicast_ether_addr(sta->addr)) {
+ err = -EINVAL;
+ goto out_free;
+ }
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ /* check if STA exists already */
+ if (__sta_info_find(local, sta->addr)) {
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+ err = -EEXIST;
+ goto out_free;
+ }
list_add(&sta->list, &local->sta_list);
local->num_sta++;
sta_info_hash_add(local, sta);
- if (local->ops->sta_notify)
- local->ops->sta_notify(local_to_hw(local), dev->ifindex,
- STA_NOTIFY_ADD, addr);
- write_unlock_bh(&local->sta_lock);
+
+ /* notify driver */
+ if (local->ops->sta_notify) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ sdata = sdata->u.vlan.ap;
+
+ local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+ STA_NOTIFY_ADD, sta->addr);
+ }
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: Added STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, addr));
+ printk(KERN_DEBUG "%s: Inserted STA %s\n",
+ wiphy_name(local->hw.wiphy), print_mac(mac, sta->addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+
#ifdef CONFIG_MAC80211_DEBUGFS
- /* debugfs entry adding might sleep, so schedule process
+ /*
+ * Debugfs entry adding might sleep, so schedule process
* context task for adding entry for STAs that do not yet
- * have one. */
- queue_work(local->hw.workqueue, &local->sta_debugfs_add);
+ * have one.
+ * NOTE: due to auto-freeing semantics this may only be done
+ * if the insertion is successful!
+ */
+ schedule_work(&local->sta_debugfs_add);
#endif
- return sta;
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_accept_plinks_update(sdata);
+
+ return 0;
+ out_free:
+ BUG_ON(!err);
+ __sta_info_free(local, sta);
+ return err;
}
-/* Caller must hold local->sta_lock */
-void sta_info_remove(struct sta_info *sta)
+static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
{
- struct ieee80211_local *local = sta->local;
- struct ieee80211_sub_if_data *sdata;
+ /*
+ * This format has been mandated by the IEEE specifications,
+ * so this line may not be changed to use the __set_bit() format.
+ */
+ bss->tim[aid / 8] |= (1 << (aid % 8));
+}
- /* don't do anything if we've been removed already */
- if (sta_info_hash_del(local, sta))
- return;
+static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
+{
+ /*
+ * This format has been mandated by the IEEE specifications,
+ * so this line may not be changed to use the __clear_bit() format.
+ */
+ bss->tim[aid / 8] &= ~(1 << (aid % 8));
+}
- list_del(&sta->list);
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
- if (sta->flags & WLAN_STA_PS) {
- sta->flags &= ~WLAN_STA_PS;
- if (sdata->bss)
- atomic_dec(&sdata->bss->num_sta_ps);
+static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss,
+ struct sta_info *sta)
+{
+ if (bss)
+ __bss_tim_set(bss, sta->aid);
+ if (sta->local->ops->set_tim) {
+ sta->local->tim_in_locked_section = true;
+ sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 1);
+ sta->local->tim_in_locked_section = false;
}
- local->num_sta--;
- sta_info_remove_aid_ptr(sta);
+}
+
+void sta_info_set_tim_bit(struct sta_info *sta)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&sta->local->sta_lock, flags);
+ __sta_info_set_tim_bit(sta->sdata->bss, sta);
+ spin_unlock_irqrestore(&sta->local->sta_lock, flags);
}
-void sta_info_free(struct sta_info *sta)
+static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss,
+ struct sta_info *sta)
{
- struct sk_buff *skb;
- struct ieee80211_local *local = sta->local;
- DECLARE_MAC_BUF(mac);
+ if (bss)
+ __bss_tim_clear(bss, sta->aid);
+ if (sta->local->ops->set_tim) {
+ sta->local->tim_in_locked_section = true;
+ sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 0);
+ sta->local->tim_in_locked_section = false;
+ }
+}
- might_sleep();
+void sta_info_clear_tim_bit(struct sta_info *sta)
+{
+ unsigned long flags;
- write_lock_bh(&local->sta_lock);
- sta_info_remove(sta);
- write_unlock_bh(&local->sta_lock);
+ spin_lock_irqsave(&sta->local->sta_lock, flags);
+ __sta_info_clear_tim_bit(sta->sdata->bss, sta);
+ spin_unlock_irqrestore(&sta->local->sta_lock, flags);
+}
- while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
- local->total_ps_buffered--;
- dev_kfree_skb(skb);
+void __sta_info_unlink(struct sta_info **sta)
+{
+ struct ieee80211_local *local = (*sta)->local;
+ struct ieee80211_sub_if_data *sdata = (*sta)->sdata;
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ DECLARE_MAC_BUF(mbuf);
+#endif
+ /*
+ * pull caller's reference if we're already gone.
+ */
+ if (sta_info_hash_del(local, *sta)) {
+ *sta = NULL;
+ return;
}
- while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
- dev_kfree_skb(skb);
+
+ if ((*sta)->key) {
+ ieee80211_key_free((*sta)->key);
+ WARN_ON((*sta)->key);
+ }
+
+ list_del(&(*sta)->list);
+
+ if ((*sta)->flags & WLAN_STA_PS) {
+ (*sta)->flags &= ~WLAN_STA_PS;
+ if (sdata->bss)
+ atomic_dec(&sdata->bss->num_sta_ps);
+ __sta_info_clear_tim_bit(sdata->bss, *sta);
+ }
+
+ local->num_sta--;
+
+ if (local->ops->sta_notify) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ sdata = sdata->u.vlan.ap;
+
+ local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+ STA_NOTIFY_REMOVE, (*sta)->addr);
+ }
+
+ if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ mesh_accept_plinks_update(sdata);
+#ifdef CONFIG_MAC80211_MESH
+ del_timer(&(*sta)->plink_timer);
+#endif
}
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Removed STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, sta->addr));
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, (*sta)->addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- ieee80211_key_free(sta->key);
- sta->key = NULL;
-
- if (local->ops->sta_notify)
- local->ops->sta_notify(local_to_hw(local), sta->dev->ifindex,
- STA_NOTIFY_REMOVE, sta->addr);
+ /*
+ * Finally, pull caller's reference if the STA is pinned by the
+ * task that is adding the debugfs entries. In that case, we
+ * leave the STA "to be freed".
+ *
+ * The rules are not trivial, but not too complex either:
+ * (1) pin_status is only modified under the sta_lock
+ * (2) STAs may only be pinned under the RTNL so that
+ * sta_info_flush() is guaranteed to actually destroy
+ * all STAs that are active for a given interface, this
+ * is required for correctness because otherwise we
+ * could notify a driver that an interface is going
+ * away and only after that (!) notify it about a STA
+ * on that interface going away.
+ * (3) sta_info_debugfs_add_work() will set the status
+ * to PINNED when it found an item that needs a new
+ * debugfs directory created. In that case, that item
+ * must not be freed although all *RCU* users are done
+ * with it. Hence, we tell the caller of _unlink()
+ * that the item is already gone (as can happen when
+ * two tasks try to unlink/destroy at the same time)
+ * (4) We set the pin_status to DESTROY here when we
+ * find such an item.
+ * (5) sta_info_debugfs_add_work() will reset the pin_status
+ * from PINNED to NORMAL when it is done with the item,
+ * but will check for DESTROY before resetting it in
+ * which case it will free the item.
+ */
+ if ((*sta)->pin_status == STA_INFO_PIN_STAT_PINNED) {
+ (*sta)->pin_status = STA_INFO_PIN_STAT_DESTROY;
+ *sta = NULL;
+ return;
+ }
+}
- rate_control_remove_sta_debugfs(sta);
- ieee80211_sta_debugfs_remove(sta);
+void sta_info_unlink(struct sta_info **sta)
+{
+ struct ieee80211_local *local = (*sta)->local;
+ unsigned long flags;
- sta_info_put(sta);
+ spin_lock_irqsave(&local->sta_lock, flags);
+ __sta_info_unlink(sta);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
}
-
static inline int sta_info_buffer_expired(struct ieee80211_local *local,
struct sta_info *sta,
struct sk_buff *skb)
@@ -266,6 +539,7 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
{
unsigned long flags;
struct sk_buff *skb;
+ struct ieee80211_sub_if_data *sdata;
DECLARE_MAC_BUF(mac);
if (skb_queue_empty(&sta->ps_tx_buf))
@@ -274,21 +548,23 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
for (;;) {
spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
skb = skb_peek(&sta->ps_tx_buf);
- if (sta_info_buffer_expired(local, sta, skb)) {
+ if (sta_info_buffer_expired(local, sta, skb))
skb = __skb_dequeue(&sta->ps_tx_buf);
- if (skb_queue_empty(&sta->ps_tx_buf))
- sta->flags &= ~WLAN_STA_TIM;
- } else
+ else
skb = NULL;
spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags);
- if (skb) {
- local->total_ps_buffered--;
- printk(KERN_DEBUG "Buffered frame expired (STA "
- "%s)\n", print_mac(mac, sta->addr));
- dev_kfree_skb(skb);
- } else
+ if (!skb)
break;
+
+ sdata = sta->sdata;
+ local->total_ps_buffered--;
+ printk(KERN_DEBUG "Buffered frame expired (STA "
+ "%s)\n", print_mac(mac, sta->addr));
+ dev_kfree_skb(skb);
+
+ if (skb_queue_empty(&sta->ps_tx_buf))
+ sta_info_clear_tim_bit(sta);
}
}
@@ -298,59 +574,123 @@ static void sta_info_cleanup(unsigned long data)
struct ieee80211_local *local = (struct ieee80211_local *) data;
struct sta_info *sta;
- read_lock_bh(&local->sta_lock);
- list_for_each_entry(sta, &local->sta_list, list) {
- __sta_info_get(sta);
+ rcu_read_lock();
+ list_for_each_entry_rcu(sta, &local->sta_list, list)
sta_info_cleanup_expire_buffered(local, sta);
- sta_info_put(sta);
- }
- read_unlock_bh(&local->sta_lock);
+ rcu_read_unlock();
- local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+ local->sta_cleanup.expires =
+ round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
add_timer(&local->sta_cleanup);
}
#ifdef CONFIG_MAC80211_DEBUGFS
-static void sta_info_debugfs_add_task(struct work_struct *work)
+/*
+ * See comment in __sta_info_unlink,
+ * caller must hold local->sta_lock.
+ */
+static void __sta_info_pin(struct sta_info *sta)
+{
+ WARN_ON(sta->pin_status != STA_INFO_PIN_STAT_NORMAL);
+ sta->pin_status = STA_INFO_PIN_STAT_PINNED;
+}
+
+/*
+ * See comment in __sta_info_unlink, returns sta if it
+ * needs to be destroyed.
+ */
+static struct sta_info *__sta_info_unpin(struct sta_info *sta)
+{
+ struct sta_info *ret = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sta->local->sta_lock, flags);
+ WARN_ON(sta->pin_status != STA_INFO_PIN_STAT_DESTROY &&
+ sta->pin_status != STA_INFO_PIN_STAT_PINNED);
+ if (sta->pin_status == STA_INFO_PIN_STAT_DESTROY)
+ ret = sta;
+ sta->pin_status = STA_INFO_PIN_STAT_NORMAL;
+ spin_unlock_irqrestore(&sta->local->sta_lock, flags);
+
+ return ret;
+}
+
+static void sta_info_debugfs_add_work(void *d)
{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local, sta_debugfs_add);
+ struct ieee80211_local *local = d;
struct sta_info *sta, *tmp;
+ unsigned long flags;
+ /* We need to keep the RTNL across the whole pinned status. */
+ rtnl_lock();
while (1) {
sta = NULL;
- read_lock_bh(&local->sta_lock);
+
+ spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry(tmp, &local->sta_list, list) {
if (!tmp->debugfs.dir) {
sta = tmp;
- __sta_info_get(sta);
+ __sta_info_pin(sta);
break;
}
}
- read_unlock_bh(&local->sta_lock);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
if (!sta)
break;
ieee80211_sta_debugfs_add(sta);
rate_control_add_sta_debugfs(sta);
- sta_info_put(sta);
+
+ sta = __sta_info_unpin(sta);
+ sta_info_destroy(sta);
}
+ rtnl_unlock();
}
#endif
+static void __ieee80211_run_pending_flush(struct ieee80211_local *local)
+{
+ struct sta_info *sta;
+ unsigned long flags;
+
+ ASSERT_RTNL();
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ while (!list_empty(&local->sta_flush_list)) {
+ sta = list_first_entry(&local->sta_flush_list,
+ struct sta_info, list);
+ list_del(&sta->list);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+ sta_info_destroy(sta);
+ spin_lock_irqsave(&local->sta_lock, flags);
+ }
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+}
+
+static void ieee80211_sta_flush_work(void *d)
+{
+ struct ieee80211_local *local = d;
+
+ rtnl_lock();
+ __ieee80211_run_pending_flush(local);
+ rtnl_unlock();
+}
+
void sta_info_init(struct ieee80211_local *local)
{
- rwlock_init(&local->sta_lock);
+ spin_lock_init(&local->sta_lock);
INIT_LIST_HEAD(&local->sta_list);
+ INIT_LIST_HEAD(&local->sta_flush_list);
+ INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work, local);
- init_timer(&local->sta_cleanup);
- local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
- local->sta_cleanup.data = (unsigned long) local;
- local->sta_cleanup.function = sta_info_cleanup;
+ setup_timer(&local->sta_cleanup, sta_info_cleanup,
+ (unsigned long)local);
+ local->sta_cleanup.expires =
+ round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
#ifdef CONFIG_MAC80211_DEBUGFS
- INIT_WORK(&local->sta_debugfs_add, sta_info_debugfs_add_task);
+ INIT_WORK(&local->sta_debugfs_add, sta_info_debugfs_add_work, local);
#endif
}
@@ -363,47 +703,96 @@ int sta_info_start(struct ieee80211_local *local)
void sta_info_stop(struct ieee80211_local *local)
{
del_timer(&local->sta_cleanup);
+#if 0 /* Not in RHEL5 */
+ cancel_work_sync(&local->sta_flush_work);
+#endif
+#ifdef CONFIG_MAC80211_DEBUGFS
+ /*
+ * Make sure the debugfs adding work isn't pending after this
+ * because we're about to be destroyed. It doesn't matter
+ * whether it ran or not since we're going to flush all STAs
+ * anyway.
+ */
+#if 0 /* Not in RHEL5 */
+ cancel_work_sync(&local->sta_debugfs_add);
+#endif
+#endif
+#if 1 /* Alternative in RHEL5 */
+ flush_scheduled_work();
+#endif
+
+ rtnl_lock();
sta_info_flush(local, NULL);
+ __ieee80211_run_pending_flush(local);
+ rtnl_unlock();
}
-void sta_info_remove_aid_ptr(struct sta_info *sta)
+/**
+ * sta_info_flush - flush matching STA entries from the STA table
+ *
+ * Returns the number of removed STA entries.
+ *
+ * @local: local interface data
+ * @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs
+ */
+int sta_info_flush(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta, *tmp;
+ LIST_HEAD(tmp_list);
+ int ret = 0;
+ unsigned long flags;
- if (sta->aid <= 0)
- return;
+ might_sleep();
+ ASSERT_RTNL();
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
+ if (!sdata || sdata == sta->sdata) {
+ __sta_info_unlink(&sta);
+ if (sta) {
+ list_add_tail(&sta->list, &tmp_list);
+ ret++;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&local->sta_lock, flags);
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ list_for_each_entry_safe(sta, tmp, &tmp_list, list)
+ sta_info_destroy(sta);
- if (sdata->local->ops->set_tim)
- sdata->local->ops->set_tim(local_to_hw(sdata->local),
- sta->aid, 0);
- if (sdata->bss)
- __bss_tim_clear(sdata->bss, sta->aid);
+ return ret;
}
-
/**
- * sta_info_flush - flush matching STA entries from the STA table
- * @local: local interface data
- * @dev: matching rule for the net device (sta->dev) or %NULL to match all STAs
+ * sta_info_flush_delayed - flush matching STA entries from the STA table
+ *
+ * This function unlinks all stations for a given interface and queues
+ * them for freeing. Note that the workqueue function scheduled here has
+ * to run before any new keys can be added to the system to avoid set_key()
+ * callback ordering issues.
+ *
+ * @sdata: the interface
*/
-void sta_info_flush(struct ieee80211_local *local, struct net_device *dev)
+void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata)
{
+ struct ieee80211_local *local = sdata->local;
struct sta_info *sta, *tmp;
- LIST_HEAD(tmp_list);
-
- write_lock_bh(&local->sta_lock);
- list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
- if (!dev || dev == sta->dev) {
- __sta_info_get(sta);
- sta_info_remove(sta);
- list_add_tail(&sta->list, &tmp_list);
+ unsigned long flags;
+ bool work = false;
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
+ if (sdata == sta->sdata) {
+ __sta_info_unlink(&sta);
+ if (sta) {
+ list_add_tail(&sta->list,
+ &local->sta_flush_list);
+ work = true;
+ }
}
- write_unlock_bh(&local->sta_lock);
-
- list_for_each_entry_safe(sta, tmp, &tmp_list, list) {
- sta_info_free(sta);
- sta_info_put(sta);
}
+ if (work)
+ schedule_work(&local->sta_flush_work);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
}
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index e1a4ac1..f8c95bc 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -12,113 +12,293 @@
#include <linux/list.h>
#include <linux/types.h>
#include <linux/if_ether.h>
-#include <linux/kref.h>
-#include "ieee80211_key.h"
-
-/* Stations flags (struct sta_info::flags) */
-#define WLAN_STA_AUTH BIT(0)
-#define WLAN_STA_ASSOC BIT(1)
-#define WLAN_STA_PS BIT(2)
-#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
-#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
-#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
- * controlling whether STA is authorized to
- * send and receive non-IEEE 802.1X frames
- */
-#define WLAN_STA_SHORT_PREAMBLE BIT(7)
-/* whether this is an AP that we are associated with as a client */
-#define WLAN_STA_ASSOC_AP BIT(8)
-#define WLAN_STA_WME BIT(9)
-#define WLAN_STA_WDS BIT(27)
+#include "key.h"
+/**
+ * enum ieee80211_sta_info_flags - Stations flags
+ *
+ * These flags are used with &struct sta_info's @flags member.
+ *
+ * @WLAN_STA_AUTH: Station is authenticated.
+ * @WLAN_STA_ASSOC: Station is associated.
+ * @WLAN_STA_PS: Station is in power-save mode
+ * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic.
+ * This bit is always checked so needs to be enabled for all stations
+ * when virtual port control is not in use.
+ * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
+ * frames.
+ * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP.
+ * @WLAN_STA_WME: Station is a QoS-STA.
+ * @WLAN_STA_WDS: Station is one of our WDS peers.
+ * @WLAN_STA_PSPOLL: Station has just PS-polled us.
+ * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
+ * IEEE80211_TXCTL_CLEAR_PS_FILT control flag) when the next
+ * frame to this station is transmitted.
+ */
+enum ieee80211_sta_info_flags {
+ WLAN_STA_AUTH = 1<<0,
+ WLAN_STA_ASSOC = 1<<1,
+ WLAN_STA_PS = 1<<2,
+ WLAN_STA_AUTHORIZED = 1<<3,
+ WLAN_STA_SHORT_PREAMBLE = 1<<4,
+ WLAN_STA_ASSOC_AP = 1<<5,
+ WLAN_STA_WME = 1<<6,
+ WLAN_STA_WDS = 1<<7,
+ WLAN_STA_PSPOLL = 1<<8,
+ WLAN_STA_CLEAR_PS_FILT = 1<<9,
+};
-struct sta_info {
- struct kref kref;
- struct list_head list;
- struct sta_info *hnext; /* next entry in hash table list */
+#define STA_TID_NUM 16
+#define ADDBA_RESP_INTERVAL HZ
+#define HT_AGG_MAX_RETRIES (0x3)
- struct ieee80211_local *local;
+#define HT_AGG_STATE_INITIATOR_SHIFT (4)
- u8 addr[ETH_ALEN];
- u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
- u32 flags; /* WLAN_STA_ */
-
- struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
- * power saving state */
- int pspoll; /* whether STA has send a PS Poll frame */
- struct sk_buff_head tx_filtered; /* buffer of TX frames that were
- * already given to low-level driver,
- * but were filtered */
- int clear_dst_mask;
-
- unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
- unsigned long rx_bytes, tx_bytes;
- unsigned long tx_retry_failed, tx_retry_count;
- unsigned long tx_filtered_count;
+#define HT_ADDBA_REQUESTED_MSK BIT(0)
+#define HT_ADDBA_DRV_READY_MSK BIT(1)
+#define HT_ADDBA_RECEIVED_MSK BIT(2)
+#define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3)
+#define HT_AGG_STATE_INITIATOR_MSK BIT(HT_AGG_STATE_INITIATOR_SHIFT)
+#define HT_AGG_STATE_IDLE (0x0)
+#define HT_AGG_STATE_OPERATIONAL (HT_ADDBA_REQUESTED_MSK | \
+ HT_ADDBA_DRV_READY_MSK | \
+ HT_ADDBA_RECEIVED_MSK)
+#define HT_AGG_STATE_DEBUGFS_CTL BIT(7)
- unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
+/**
+ * struct tid_ampdu_tx - TID aggregation information (Tx).
+ *
+ * @addba_resp_timer: timer for peer's response to addba request
+ * @ssn: Starting Sequence Number expected to be aggregated.
+ * @dialog_token: dialog token for aggregation session
+ */
+struct tid_ampdu_tx {
+ struct timer_list addba_resp_timer;
+ u16 ssn;
+ u8 dialog_token;
+};
- unsigned long last_rx;
- u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
- int txrate; /* index in local->curr_rates */
- int last_txrate; /* last rate used to send a frame to this STA */
- int last_nonerp_idx;
+/**
+ * struct tid_ampdu_rx - TID aggregation information (Rx).
+ *
+ * @reorder_buf: buffer to reorder incoming aggregated MPDUs
+ * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
+ * @head_seq_num: head sequence number in reordering buffer.
+ * @stored_mpdu_num: number of MPDUs in reordering buffer
+ * @ssn: Starting Sequence Number expected to be aggregated.
+ * @buf_size: buffer size for incoming A-MPDUs
+ * @timeout: reset timer value.
+ * @dialog_token: dialog token for aggregation session
+ */
+struct tid_ampdu_rx {
+ struct sk_buff **reorder_buf;
+ struct timer_list session_timer;
+ u16 head_seq_num;
+ u16 stored_mpdu_num;
+ u16 ssn;
+ u16 buf_size;
+ u16 timeout;
+ u8 dialog_token;
+};
- struct net_device *dev; /* which net device is this station associated
- * to */
+/**
+ * enum plink_state - state of a mesh peer link finite state machine
+ *
+ * @PLINK_LISTEN: initial state, considered the implicit state of non existant
+ * mesh peer links
+ * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer
+ * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer
+ * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh
+ * peer
+ * @PLINK_ESTAB: mesh peer link is established
+ * @PLINK_HOLDING: mesh peer link is being closed or cancelled
+ * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded
+ */
+enum plink_state {
+ PLINK_LISTEN,
+ PLINK_OPN_SNT,
+ PLINK_OPN_RCVD,
+ PLINK_CNF_RCVD,
+ PLINK_ESTAB,
+ PLINK_HOLDING,
+ PLINK_BLOCKED
+};
- struct ieee80211_key *key;
+/**
+ * struct sta_ampdu_mlme - STA aggregation information.
+ *
+ * @tid_state_rx: TID's state in Rx session state machine.
+ * @tid_rx: aggregation info for Rx per TID
+ * @ampdu_rx: for locking sections in aggregation Rx flow
+ * @tid_state_tx: TID's state in Tx session state machine.
+ * @tid_tx: aggregation info for Tx per TID
+ * @addba_req_num: number of times addBA request has been sent.
+ * @ampdu_tx: for locking sectionsi in aggregation Tx flow
+ * @dialog_token_allocator: dialog token enumerator for each new session;
+ */
+struct sta_ampdu_mlme {
+ /* rx */
+ u8 tid_state_rx[STA_TID_NUM];
+ struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
+ spinlock_t ampdu_rx;
+ /* tx */
+ u8 tid_state_tx[STA_TID_NUM];
+ struct tid_ampdu_tx *tid_tx[STA_TID_NUM];
+ u8 addba_req_num[STA_TID_NUM];
+ spinlock_t ampdu_tx;
+ u8 dialog_token_allocator;
+};
- u32 tx_num_consecutive_failures;
- u32 tx_num_mpdu_ok;
- u32 tx_num_mpdu_fail;
+/* see __sta_info_unlink */
+#define STA_INFO_PIN_STAT_NORMAL 0
+#define STA_INFO_PIN_STAT_PINNED 1
+#define STA_INFO_PIN_STAT_DESTROY 2
+
+/**
+ * struct sta_info - STA information
+ *
+ * This structure collects information about a station that
+ * mac80211 is communicating with.
+ *
+ * @list: global linked list entry
+ * @hnext: hash table linked list pointer
+ * @local: pointer to the global information
+ * @addr: MAC address of this STA
+ * @aid: STA's unique AID (1..2007, 0 = not assigned yet),
+ * only used in AP (and IBSS?) mode
+ * @flags: STA flags, see &enum ieee80211_sta_info_flags
+ * @ps_tx_buf: buffer of frames to transmit to this station
+ * when it leaves power saving state
+ * @tx_filtered: buffer of frames we already tried to transmit
+ * but were filtered by hardware due to STA having entered
+ * power saving state
+ * @rx_packets: Number of MSDUs received from this STA
+ * @rx_bytes: Number of bytes received from this STA
+ * @supp_rates: Bitmap of supported rates (per band)
+ * @ht_info: HT capabilities of this STA
+ */
+struct sta_info {
+ /* General information, mostly static */
+ struct list_head list;
+ struct sta_info *hnext;
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_key *key;
struct rate_control_ref *rate_ctrl;
void *rate_ctrl_priv;
+ struct ieee80211_ht_info ht_info;
+ u64 supp_rates[IEEE80211_NUM_BANDS];
+ u8 addr[ETH_ALEN];
+ u16 aid;
+ u16 listen_interval;
- /* last received seq/frag number from this STA (per RX queue) */
- __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
+ /*
+ * for use by the internal lifetime management,
+ * see __sta_info_unlink
+ */
+ u8 pin_status;
+
+ /* frequently updated information, needs locking? */
+ u32 flags;
+
+ /*
+ * STA powersave frame queues, no more than the internal
+ * locking required.
+ */
+ struct sk_buff_head ps_tx_buf;
+ struct sk_buff_head tx_filtered;
+
+ /* Updated from RX path only, no locking requirements */
+ unsigned long rx_packets, rx_bytes;
+ unsigned long wep_weak_iv_count;
+ unsigned long last_rx;
unsigned long num_duplicates; /* number of duplicate frames received
* from this STA */
- unsigned long tx_fragments; /* number of transmitted MPDUs */
unsigned long rx_fragments; /* number of received MPDUs */
unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
-
int last_rssi; /* RSSI of last received frame from this STA */
int last_signal; /* signal of last received frame from this STA */
int last_noise; /* noise of last received frame from this STA */
- int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
- unsigned long last_ack;
- int channel_use;
- int channel_use_raw;
-
+ /* last received seq/frag number from this STA (per RX queue) */
+ __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+#endif
+
+ /* Updated from TX status path only, no locking requirements */
+ unsigned long tx_filtered_count;
+ unsigned long tx_retry_failed, tx_retry_count;
+ /* TODO: update in generic code not rate control? */
+ u32 tx_num_consecutive_failures;
+ u32 tx_num_mpdu_ok;
+ u32 tx_num_mpdu_fail;
+ /* moving percentage of failed MSDUs */
+ unsigned int fail_avg;
+
+ /* Updated from TX path only, no locking requirements */
+ unsigned long tx_packets; /* number of RX/TX MSDUs */
+ unsigned long tx_bytes;
+ unsigned long tx_fragments; /* number of transmitted MPDUs */
+ int txrate_idx;
+ int last_txrate_idx;
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
-#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+#endif
- u16 listen_interval;
+ /* Debug counters, no locking doesn't matter */
+ int channel_use;
+ int channel_use_raw;
+
+ /*
+ * Aggregation information, comes with own locking.
+ */
+ struct sta_ampdu_mlme ampdu_mlme;
+ u8 timer_to_tid[STA_TID_NUM]; /* identity mapping to ID timers */
+ u8 tid_to_tx_q[STA_TID_NUM]; /* map tid to tx queue */
- struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities
- of this STA */
+#ifdef CONFIG_MAC80211_MESH
+ /*
+ * Mesh peer link attributes
+ * TODO: move to a sub-structure that is referenced with pointer?
+ */
+ __le16 llid; /* Local link ID */
+ __le16 plid; /* Peer link ID */
+ __le16 reason; /* Cancel reason on PLINK_HOLDING state */
+ u8 plink_retries; /* Retries in establishment */
+ bool ignore_plink_timer;
+ enum plink_state plink_state;
+ u32 plink_timeout;
+ struct timer_list plink_timer;
+ spinlock_t plink_lock; /* For peer_state reads / updates and other
+ updates in the structure. Ensures robust
+ transitions for the peerlink FSM */
+#endif
#ifdef CONFIG_MAC80211_DEBUGFS
struct sta_info_debugfsdentries {
struct dentry *dir;
struct dentry *flags;
struct dentry *num_ps_buf_frames;
- struct dentry *last_ack_rssi;
- struct dentry *last_ack_ms;
struct dentry *inactive_ms;
struct dentry *last_seq_ctrl;
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
struct dentry *wme_rx_queue;
struct dentry *wme_tx_queue;
#endif
+ struct dentry *agg_status;
} debugfs;
#endif
};
+static inline enum plink_state sta_plink_state(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_MESH
+ return sta->plink_state;
+#endif
+ return PLINK_LISTEN;
+}
+
/* Maximum number of concurrently registered stations */
#define MAX_STA_COUNT 2007
@@ -138,22 +318,46 @@ struct sta_info {
*/
#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
-static inline void __sta_info_get(struct sta_info *sta)
-{
- kref_get(&sta->kref);
-}
+/*
+ * Get a STA info, must have be under RCU read lock.
+ */
+struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr);
+/*
+ * Get STA info by index, BROKEN!
+ */
+struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
+ struct net_device *dev);
+/*
+ * Create a new STA info, caller owns returned structure
+ * until sta_info_insert().
+ */
+struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
+ u8 *addr, gfp_t gfp);
+/*
+ * Insert STA info into hash table/list, returns zero or a
+ * -EEXIST if (if the same MAC address is already present).
+ *
+ * Calling this without RCU protection makes the caller
+ * relinquish its reference to @sta.
+ */
+int sta_info_insert(struct sta_info *sta);
+/*
+ * Unlink a STA info from the hash table/list.
+ * This can NULL the STA pointer if somebody else
+ * has already unlinked it.
+ */
+void sta_info_unlink(struct sta_info **sta);
+void __sta_info_unlink(struct sta_info **sta);
+
+void sta_info_destroy(struct sta_info *sta);
+void sta_info_set_tim_bit(struct sta_info *sta);
+void sta_info_clear_tim_bit(struct sta_info *sta);
-struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
-int sta_info_min_txrate_get(struct ieee80211_local *local);
-void sta_info_put(struct sta_info *sta);
-struct sta_info * sta_info_add(struct ieee80211_local *local,
- struct net_device *dev, u8 *addr, gfp_t gfp);
-void sta_info_remove(struct sta_info *sta);
-void sta_info_free(struct sta_info *sta);
void sta_info_init(struct ieee80211_local *local);
int sta_info_start(struct ieee80211_local *local);
void sta_info_stop(struct ieee80211_local *local);
-void sta_info_remove_aid_ptr(struct sta_info *sta);
-void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
+int sta_info_flush(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata);
+void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata);
#endif /* STA_INFO_H */
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 6eae068..40a5424 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -12,7 +12,7 @@
#include <linux/netdevice.h>
#include <net/mac80211.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "tkip.h"
#include "wep.h"
@@ -214,6 +214,57 @@ void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
key->u.tkip.iv16, rc4key);
}
+void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf,
+ struct sk_buff *skb, enum ieee80211_tkip_key_type type,
+ u8 *outkey)
+{
+ struct ieee80211_key *key = (struct ieee80211_key *)
+ container_of(keyconf, struct ieee80211_key, conf);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u8 *data = (u8 *) hdr;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ int hdr_len = ieee80211_get_hdrlen(fc);
+ u8 *ta = hdr->addr2;
+ u16 iv16;
+ u32 iv32;
+
+ iv16 = data[hdr_len] << 8;
+ iv16 += data[hdr_len + 2];
+ iv32 = data[hdr_len + 4] | (data[hdr_len + 5] << 8) |
+ (data[hdr_len + 6] << 16) | (data[hdr_len + 7] << 24);
+
+#ifdef CONFIG_TKIP_DEBUG
+ printk(KERN_DEBUG "TKIP encrypt: iv16 = 0x%04x, iv32 = 0x%08x\n",
+ iv16, iv32);
+
+ if (iv32 != key->u.tkip.iv32) {
+ printk(KERN_DEBUG "skb: iv32 = 0x%08x key: iv32 = 0x%08x\n",
+ iv32, key->u.tkip.iv32);
+ printk(KERN_DEBUG "Wrap around of iv16 in the middle of a "
+ "fragmented packet\n");
+ }
+#endif /* CONFIG_TKIP_DEBUG */
+
+ /* Update the p1k only when the iv16 in the packet wraps around, this
+ * might occur after the wrap around of iv16 in the key in case of
+ * fragmented packets. */
+ if (iv16 == 0 || !key->u.tkip.tx_initialized) {
+ /* IV16 wrapped around - perform TKIP phase 1 */
+ tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY],
+ iv32, key->u.tkip.p1k);
+ key->u.tkip.tx_initialized = 1;
+ }
+
+ if (type == IEEE80211_TKIP_P1_KEY) {
+ memcpy(outkey, key->u.tkip.p1k, sizeof(u16) * 5);
+ return;
+ }
+
+ tkip_mixing_phase2(key->u.tkip.p1k,
+ &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY], iv16, outkey);
+}
+EXPORT_SYMBOL(ieee80211_get_tkip_key);
+
/* Encrypt packet payload with TKIP using @key. @pos is a pointer to the
* beginning of the buffer containing payload. This payload must include
* headroom of eight octets for IV and Ext. IV and taildroom of four octets
@@ -238,7 +289,7 @@ void ieee80211_tkip_encrypt_data(struct crypto_tfm *tfm,
int ieee80211_tkip_decrypt_data(struct crypto_tfm *tfm,
struct ieee80211_key *key,
u8 *payload, size_t payload_len, u8 *ta,
- int only_iv, int queue,
+ u8 *ra, int only_iv, int queue,
u32 *out_iv32, u16 *out_iv16)
{
u32 iv32;
@@ -315,6 +366,19 @@ int ieee80211_tkip_decrypt_data(struct crypto_tfm *tfm,
printk("\n");
}
#endif /* CONFIG_TKIP_DEBUG */
+ if (key->local->ops->update_tkip_key &&
+ key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
+ u8 bcast[ETH_ALEN] =
+ {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+ u8 *sta_addr = key->sta->addr;
+
+ if (is_multicast_ether_addr(ra))
+ sta_addr = bcast;
+
+ key->local->ops->update_tkip_key(
+ local_to_hw(key->local), &key->conf,
+ sta_addr, iv32, key->u.tkip.p1k_rx[queue]);
+ }
}
tkip_mixing_phase2(key->u.tkip.p1k_rx[queue],
diff --git a/net/mac80211/tkip.h b/net/mac80211/tkip.h
index 4fc5718..1a29ae1 100644
--- a/net/mac80211/tkip.h
+++ b/net/mac80211/tkip.h
@@ -11,7 +11,7 @@
#include <linux/types.h>
#include <linux/crypto.h>
-#include "ieee80211_key.h"
+#include "key.h"
u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
u8 iv0, u8 iv1, u8 iv2);
@@ -31,7 +31,7 @@ enum {
int ieee80211_tkip_decrypt_data(struct crypto_tfm *tfm,
struct ieee80211_key *key,
u8 *payload, size_t payload_len, u8 *ta,
- int only_iv, int queue,
+ u8 *ra, int only_iv, int queue,
u32 *out_iv32, u16 *out_iv16);
#endif /* TKIP_H */
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index dadf834..636fdd1 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -27,11 +27,12 @@
#include <asm/unaligned.h>
#include "ieee80211_i.h"
-#include "ieee80211_led.h"
+#include "led.h"
+#include "mesh.h"
#include "wep.h"
#include "wpa.h"
#include "wme.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#define IEEE80211_TX_OK 0
#define IEEE80211_TX_AGAIN 1
@@ -88,15 +89,19 @@ static inline void ieee80211_dump_frame(const char *ifname, const char *title,
}
#endif /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
-static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
+static u16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
int next_frag_len)
{
int rate, mrate, erp, dur, i;
- struct ieee80211_rate *txrate = tx->u.tx.rate;
+ struct ieee80211_rate *txrate = tx->rate;
struct ieee80211_local *local = tx->local;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+ struct ieee80211_supported_band *sband;
- erp = txrate->flags & IEEE80211_RATE_ERP;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ erp = 0;
+ if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = txrate->flags & IEEE80211_RATE_ERP_G;
/*
* data and mgmt (except PS Poll):
@@ -152,20 +157,36 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
* Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps
*/
rate = -1;
- mrate = 10; /* use 1 Mbps if everything fails */
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *r = &mode->rates[i];
- if (r->rate > txrate->rate)
- break;
+ /* use lowest available if everything fails */
+ mrate = sband->bitrates[0].bitrate;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *r = &sband->bitrates[i];
- if (IEEE80211_RATE_MODULATION(txrate->flags) !=
- IEEE80211_RATE_MODULATION(r->flags))
- continue;
+ if (r->bitrate > txrate->bitrate)
+ break;
- if (r->flags & IEEE80211_RATE_BASIC)
- rate = r->rate;
- else if (r->flags & IEEE80211_RATE_MANDATORY)
- mrate = r->rate;
+ if (tx->sdata->basic_rates & BIT(i))
+ rate = r->bitrate;
+
+ switch (sband->band) {
+ case IEEE80211_BAND_2GHZ: {
+ u32 flag;
+ if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ flag = IEEE80211_RATE_MANDATORY_G;
+ else
+ flag = IEEE80211_RATE_MANDATORY_B;
+ if (r->flags & flag)
+ mrate = r->bitrate;
+ break;
+ }
+ case IEEE80211_BAND_5GHZ:
+ if (r->flags & IEEE80211_RATE_MANDATORY_A)
+ mrate = r->bitrate;
+ break;
+ case IEEE80211_NUM_BANDS:
+ WARN_ON(1);
+ break;
+ }
}
if (rate == -1) {
/* No matching basic rate found; use highest suitable mandatory
@@ -178,7 +199,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
* to closest integer */
dur = ieee80211_frame_duration(local, 10, rate, erp,
- tx->sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE);
+ tx->sdata->bss_conf.use_short_preamble);
if (next_frag_len) {
/* Frame is fragmented: duration increases with time needed to
@@ -186,9 +207,8 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
dur *= 2; /* ACK + SIFS */
/* next fragment */
dur += ieee80211_frame_duration(local, next_frag_len,
- txrate->rate, erp,
- tx->sdata->flags &
- IEEE80211_SDATA_SHORT_PREAMBLE);
+ txrate->bitrate, erp,
+ tx->sdata->bss_conf.use_short_preamble);
}
return dur;
@@ -215,8 +235,8 @@ static int inline is_ieee80211_device(struct net_device *dev,
/* tx handlers */
-static ieee80211_txrx_result
-ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
{
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
struct sk_buff *skb = tx->skb;
@@ -224,22 +244,25 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
u32 sta_flags;
- if (unlikely(tx->flags & IEEE80211_TXRXD_TX_INJECTED))
- return TXRX_CONTINUE;
+ if (unlikely(tx->flags & IEEE80211_TX_INJECTED))
+ return TX_CONTINUE;
if (unlikely(tx->local->sta_sw_scanning) &&
((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
(tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
- return TXRX_DROP;
+ return TX_DROP;
+
+ if (tx->sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
+ return TX_CONTINUE;
- if (tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED)
- return TXRX_CONTINUE;
+ if (tx->flags & IEEE80211_TX_PS_BUFFERED)
+ return TX_CONTINUE;
sta_flags = tx->sta ? tx->sta->flags : 0;
- if (likely(tx->flags & IEEE80211_TXRXD_TXUNICAST)) {
+ if (likely(tx->flags & IEEE80211_TX_UNICAST)) {
if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
- tx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+ tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
(tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
DECLARE_MAC_BUF(mac);
@@ -248,45 +271,33 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
tx->dev->name, print_mac(mac, hdr->addr1));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
- return TXRX_DROP;
+ return TX_DROP;
}
} else {
if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
tx->local->num_sta == 0 &&
- tx->sdata->type != IEEE80211_IF_TYPE_IBSS)) {
+ tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS)) {
/*
* No associated STAs - no need to send multicast
* frames.
*/
- return TXRX_DROP;
+ return TX_DROP;
}
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
- if (unlikely(/* !injected && */ tx->sdata->ieee802_1x &&
- !(sta_flags & WLAN_STA_AUTHORIZED))) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
- printk(KERN_DEBUG "%s: dropped frame to %s"
- " (unauthorized port)\n", tx->dev->name,
- print_mac(mac, hdr->addr1));
-#endif
- I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
- return TXRX_DROP;
- }
-
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_sequence(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
if (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)) >= 24)
ieee80211_include_sequence(tx->sdata, hdr);
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
/* This function is called whenever the AP is about to exceed the maximum limit
@@ -308,7 +319,7 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
struct ieee80211_if_ap *ap;
if (sdata->dev == local->mdev ||
- sdata->type != IEEE80211_IF_TYPE_AP)
+ sdata->vif.type != IEEE80211_IF_TYPE_AP)
continue;
ap = &sdata->u.ap;
skb = skb_dequeue(&ap->ps_bc_buf);
@@ -318,10 +329,8 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
}
total += skb_queue_len(&ap->ps_bc_buf);
}
- rcu_read_unlock();
- read_lock_bh(&local->sta_lock);
- list_for_each_entry(sta, &local->sta_list, list) {
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
skb = skb_dequeue(&sta->ps_tx_buf);
if (skb) {
purged++;
@@ -329,23 +338,35 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
}
total += skb_queue_len(&sta->ps_tx_buf);
}
- read_unlock_bh(&local->sta_lock);
+
+ rcu_read_unlock();
local->total_ps_buffered = total;
printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
wiphy_name(local->hw.wiphy), purged);
}
-static inline ieee80211_txrx_result
-ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
{
- /* broadcast/multicast frame */
- /* If any of the associated stations is in power save mode,
- * the frame is buffered to be sent after DTIM beacon frame */
- if ((tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) &&
- tx->sdata->type != IEEE80211_IF_TYPE_WDS &&
- tx->sdata->bss && atomic_read(&tx->sdata->bss->num_sta_ps) &&
- !(tx->fc & IEEE80211_FCTL_ORDER)) {
+ /*
+ * broadcast/multicast frame
+ *
+ * If any of the associated stations is in power save mode,
+ * the frame is buffered to be sent after DTIM beacon frame.
+ * This is done either by the hardware or us.
+ */
+
+ /* not AP/IBSS or ordered frame */
+ if (!tx->sdata->bss || (tx->fc & IEEE80211_FCTL_ORDER))
+ return TX_CONTINUE;
+
+ /* no stations in PS mode */
+ if (!atomic_read(&tx->sdata->bss->num_sta_ps))
+ return TX_CONTINUE;
+
+ /* buffered in mac80211 */
+ if (tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) {
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
purge_old_ps_buffers(tx->local);
if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >=
@@ -359,14 +380,17 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
} else
tx->local->total_ps_buffered++;
skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
- return TXRX_QUEUED;
+ return TX_QUEUED;
}
- return TXRX_CONTINUE;
+ /* buffered in hardware */
+ tx->control->flags |= IEEE80211_TXCTL_SEND_AFTER_DTIM;
+
+ return TX_CONTINUE;
}
-static inline ieee80211_txrx_result
-ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
{
struct sta_info *sta = tx->sta;
DECLARE_MAC_BUF(mac);
@@ -374,9 +398,10 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
if (unlikely(!sta ||
((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
(tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
- if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) {
+ if (unlikely((sta->flags & WLAN_STA_PS) &&
+ !(sta->flags & WLAN_STA_PSPOLL))) {
struct ieee80211_tx_packet_data *pkt_data;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "STA %s aid %d: PS buffer (entries "
@@ -384,7 +409,6 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
print_mac(mac, sta->addr), sta->aid,
skb_queue_len(&sta->ps_tx_buf));
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- sta->flags |= WLAN_STA_TIM;
if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
purge_old_ps_buffers(tx->local);
if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
@@ -397,18 +421,15 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
dev_kfree_skb(old);
} else
tx->local->total_ps_buffered++;
+
/* Queue frame to be sent after STA sends an PS Poll frame */
- if (skb_queue_empty(&sta->ps_tx_buf)) {
- if (tx->local->ops->set_tim)
- tx->local->ops->set_tim(local_to_hw(tx->local),
- sta->aid, 1);
- if (tx->sdata->bss)
- bss_tim_set(tx->local, tx->sdata->bss, sta->aid);
- }
+ if (skb_queue_empty(&sta->ps_tx_buf))
+ sta_info_set_tim_bit(sta);
+
pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
pkt_data->jiffies = jiffies;
skb_queue_tail(&sta->ps_tx_buf, tx->skb);
- return TXRX_QUEUED;
+ return TX_QUEUED;
}
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
else if (unlikely(sta->flags & WLAN_STA_PS)) {
@@ -417,59 +438,73 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
print_mac(mac, sta->addr));
}
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
- sta->pspoll = 0;
+ sta->flags &= ~WLAN_STA_PSPOLL;
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_ps_buf(struct ieee80211_tx_data *tx)
{
- if (unlikely(tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED))
- return TXRX_CONTINUE;
+ if (unlikely(tx->flags & IEEE80211_TX_PS_BUFFERED))
+ return TX_CONTINUE;
- if (tx->flags & IEEE80211_TXRXD_TXUNICAST)
+ if (tx->flags & IEEE80211_TX_UNICAST)
return ieee80211_tx_h_unicast_ps_buf(tx);
else
return ieee80211_tx_h_multicast_ps_buf(tx);
}
-static ieee80211_txrx_result
-ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
{
struct ieee80211_key *key;
- const struct ieee80211_hdr *hdr;
- u16 fc;
-
- hdr = (const struct ieee80211_hdr *) tx->skb->data;
- fc = le16_to_cpu(hdr->frame_control);
+ u16 fc = tx->fc;
- if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
+ if (unlikely(tx->control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
tx->key = NULL;
else if (tx->sta && (key = rcu_dereference(tx->sta->key)))
tx->key = key;
else if ((key = rcu_dereference(tx->sdata->default_key)))
tx->key = key;
else if (tx->sdata->drop_unencrypted &&
- !(tx->sdata->eapol &&
- ieee80211_is_eapol(tx->skb, ieee80211_get_hdrlen(fc)))) {
+ !(tx->control->flags & IEEE80211_TXCTL_EAPOL_FRAME) &&
+ !(tx->flags & IEEE80211_TX_INJECTED)) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
- return TXRX_DROP;
- } else {
+ return TX_DROP;
+ } else
tx->key = NULL;
- tx->u.tx.control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- }
if (tx->key) {
+ u16 ftype, stype;
+
tx->key->tx_rx_count++;
/* TODO: add threshold stuff again */
+
+ switch (tx->key->conf.alg) {
+ case ALG_WEP:
+ ftype = fc & IEEE80211_FCTL_FTYPE;
+ stype = fc & IEEE80211_FCTL_STYPE;
+
+ if (ftype == IEEE80211_FTYPE_MGMT &&
+ stype == IEEE80211_STYPE_AUTH)
+ break;
+ case ALG_TKIP:
+ case ALG_CCMP:
+ if (!WLAN_FC_DATA_PRESENT(fc))
+ tx->key = NULL;
+ break;
+ }
}
- return TXRX_CONTINUE;
+ if (!tx->key || !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
+ tx->control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+
+ return TX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
size_t hdrlen, per_fragm, num_fragm, payload_len, left;
@@ -479,8 +514,8 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
u8 *pos;
int frag_threshold = tx->local->fragmentation_threshold;
- if (!(tx->flags & IEEE80211_TXRXD_FRAGMENTED))
- return TXRX_CONTINUE;
+ if (!(tx->flags & IEEE80211_TX_FRAGMENTED))
+ return TX_CONTINUE;
first = tx->skb;
@@ -531,10 +566,10 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
}
skb_trim(first, hdrlen + per_fragm);
- tx->u.tx.num_extra_frag = num_fragm - 1;
- tx->u.tx.extra_frag = frags;
+ tx->num_extra_frag = num_fragm - 1;
+ tx->extra_frag = frags;
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
fail:
printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name);
@@ -545,14 +580,14 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
kfree(frags);
}
I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment);
- return TXRX_DROP;
+ return TX_DROP;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_encrypt(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx)
{
if (!tx->key)
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
switch (tx->key->conf.alg) {
case ALG_WEP:
@@ -565,63 +600,60 @@ ieee80211_tx_h_encrypt(struct ieee80211_txrx_data *tx)
/* not reached */
WARN_ON(1);
- return TXRX_DROP;
+ return TX_DROP;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
{
- struct rate_control_extra extra;
+ struct rate_selection rsel;
+ struct ieee80211_supported_band *sband;
- if (likely(!tx->u.tx.rate)) {
- memset(&extra, 0, sizeof(extra));
- extra.mode = tx->u.tx.mode;
- extra.ethertype = tx->ethertype;
+ sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band];
- tx->u.tx.rate = rate_control_get_rate(tx->local, tx->dev,
- tx->skb, &extra);
- if (unlikely(extra.probe != NULL)) {
- tx->u.tx.control->flags |=
+ if (likely(!tx->rate)) {
+ rate_control_get_rate(tx->dev, sband, tx->skb, &rsel);
+ tx->rate = rsel.rate;
+ if (unlikely(rsel.probe)) {
+ tx->control->flags |=
IEEE80211_TXCTL_RATE_CTRL_PROBE;
- tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
- tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
- tx->u.tx.rate = extra.probe;
+ tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
+ tx->control->alt_retry_rate = tx->rate;
+ tx->rate = rsel.probe;
} else
- tx->u.tx.control->alt_retry_rate = -1;
+ tx->control->alt_retry_rate = NULL;
- if (!tx->u.tx.rate)
- return TXRX_DROP;
+ if (!tx->rate)
+ return TX_DROP;
} else
- tx->u.tx.control->alt_retry_rate = -1;
-
- if (tx->u.tx.mode->mode == MODE_IEEE80211G &&
- (tx->sdata->flags & IEEE80211_SDATA_USE_PROTECTION) &&
- (tx->flags & IEEE80211_TXRXD_FRAGMENTED) && extra.nonerp) {
- tx->u.tx.last_frag_rate = tx->u.tx.rate;
- if (extra.probe)
- tx->flags &= ~IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
+ tx->control->alt_retry_rate = NULL;
+
+ if (tx->sdata->bss_conf.use_cts_prot &&
+ (tx->flags & IEEE80211_TX_FRAGMENTED) && rsel.nonerp) {
+ tx->last_frag_rate = tx->rate;
+ if (rsel.probe)
+ tx->flags &= ~IEEE80211_TX_PROBE_LAST_FRAG;
else
- tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
- tx->u.tx.rate = extra.nonerp;
- tx->u.tx.control->rate = extra.nonerp;
- tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+ tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
+ tx->rate = rsel.nonerp;
+ tx->control->tx_rate = rsel.nonerp;
+ tx->control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
} else {
- tx->u.tx.last_frag_rate = tx->u.tx.rate;
- tx->u.tx.control->rate = tx->u.tx.rate;
+ tx->last_frag_rate = tx->rate;
+ tx->control->tx_rate = tx->rate;
}
- tx->u.tx.control->tx_rate = tx->u.tx.rate->val;
+ tx->control->tx_rate = tx->rate;
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
u16 fc = le16_to_cpu(hdr->frame_control);
u16 dur;
- struct ieee80211_tx_control *control = tx->u.tx.control;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+ struct ieee80211_tx_control *control = tx->control;
if (!control->retry_limit) {
if (!is_multicast_ether_addr(hdr->addr1)) {
@@ -643,21 +675,21 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
}
}
- if (tx->flags & IEEE80211_TXRXD_FRAGMENTED) {
+ if (tx->flags & IEEE80211_TX_FRAGMENTED) {
/* Do not use multiple retry rates when sending fragmented
* frames.
* TODO: The last fragment could still use multiple retry
* rates. */
- control->alt_retry_rate = -1;
+ control->alt_retry_rate = NULL;
}
/* Use CTS protection for unicast frames sent using extended rates if
* there are associated non-ERP stations and RTS/CTS is not configured
* for the frame. */
- if (mode->mode == MODE_IEEE80211G &&
- (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
- (tx->flags & IEEE80211_TXRXD_TXUNICAST) &&
- (tx->sdata->flags & IEEE80211_SDATA_USE_PROTECTION) &&
+ if ((tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) &&
+ (tx->rate->flags & IEEE80211_RATE_ERP_G) &&
+ (tx->flags & IEEE80211_TX_UNICAST) &&
+ tx->sdata->bss_conf.use_cts_prot &&
!(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
@@ -665,71 +697,77 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
* short preambles at the selected rate and short preambles are
* available on the network at the current point in time. */
if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
- (tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) &&
- (tx->sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) &&
+ (tx->rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
+ tx->sdata->bss_conf.use_short_preamble &&
(!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
- tx->u.tx.control->tx_rate = tx->u.tx.rate->val2;
+ tx->control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
}
/* Setup duration field for the first fragment of the frame. Duration
* for remaining fragments will be updated when they are being sent
* to low-level driver in ieee80211_tx(). */
dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1),
- (tx->flags & IEEE80211_TXRXD_FRAGMENTED) ?
- tx->u.tx.extra_frag[0]->len : 0);
+ (tx->flags & IEEE80211_TX_FRAGMENTED) ?
+ tx->extra_frag[0]->len : 0);
hdr->duration_id = cpu_to_le16(dur);
if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
(control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
- struct ieee80211_rate *rate;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate, *baserate;
+ int idx;
+
+ sband = tx->local->hw.wiphy->bands[
+ tx->local->hw.conf.channel->band];
/* Do not use multiple retry rates when using RTS/CTS */
- control->alt_retry_rate = -1;
+ control->alt_retry_rate = NULL;
/* Use min(data rate, max base rate) as CTS/RTS rate */
- rate = tx->u.tx.rate;
- while (rate > mode->rates &&
- !(rate->flags & IEEE80211_RATE_BASIC))
- rate--;
+ rate = tx->rate;
+ baserate = NULL;
- control->rts_cts_rate = rate->val;
- control->rts_rate = rate;
+ for (idx = 0; idx < sband->n_bitrates; idx++) {
+ if (sband->bitrates[idx].bitrate > rate->bitrate)
+ continue;
+ if (tx->sdata->basic_rates & BIT(idx) &&
+ (!baserate ||
+ (baserate->bitrate < sband->bitrates[idx].bitrate)))
+ baserate = &sband->bitrates[idx];
+ }
+
+ if (baserate)
+ control->rts_cts_rate = baserate;
+ else
+ control->rts_cts_rate = &sband->bitrates[0];
}
if (tx->sta) {
+ control->aid = tx->sta->aid;
tx->sta->tx_packets++;
tx->sta->tx_fragments++;
tx->sta->tx_bytes += tx->skb->len;
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
int i;
- tx->sta->tx_fragments += tx->u.tx.num_extra_frag;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ tx->sta->tx_fragments += tx->num_extra_frag;
+ for (i = 0; i < tx->num_extra_frag; i++) {
tx->sta->tx_bytes +=
- tx->u.tx.extra_frag[i]->len;
+ tx->extra_frag[i]->len;
}
}
}
- /*
- * Tell hardware to not encrypt when we had sw crypto.
- * Because we use the same flag to internally indicate that
- * no (software) encryption should be done, we have to set it
- * after all crypto handlers.
- */
- if (tx->key && !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
- tx->u.tx.control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
-
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-static ieee80211_txrx_result
-ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
+static ieee80211_tx_result
+ieee80211_tx_h_load_stats(struct ieee80211_tx_data *tx)
{
struct ieee80211_local *local = tx->local;
- struct ieee80211_hw_mode *mode = tx->u.tx.mode;
struct sk_buff *skb = tx->skb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
u32 load = 0, hdrtime;
+ struct ieee80211_rate *rate = tx->rate;
/* TODO: this could be part of tx_status handling, so that the number
* of retries would be known; TX rate should in that case be stored
@@ -740,9 +778,9 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
/* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
* 1 usec = 1/8 * (1080 / 10) = 13.5 */
- if (mode->mode == MODE_IEEE80211A ||
- (mode->mode == MODE_IEEE80211G &&
- tx->u.tx.rate->flags & IEEE80211_RATE_ERP))
+ if (tx->channel->band == IEEE80211_BAND_5GHZ ||
+ (tx->channel->band == IEEE80211_BAND_2GHZ &&
+ rate->flags & IEEE80211_RATE_ERP_G))
hdrtime = CHAN_UTIL_HDR_SHORT;
else
hdrtime = CHAN_UTIL_HDR_LONG;
@@ -751,19 +789,20 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
if (!is_multicast_ether_addr(hdr->addr1))
load += hdrtime;
- if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
+ if (tx->control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
load += 2 * hdrtime;
- else if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
+ else if (tx->control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
load += hdrtime;
- load += skb->len * tx->u.tx.rate->rate_inv;
+ /* TODO: optimise again */
+ load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate;
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ for (i = 0; i < tx->num_extra_frag; i++) {
load += 2 * hdrtime;
- load += tx->u.tx.extra_frag[i]->len *
- tx->u.tx.rate->rate;
+ load += tx->extra_frag[i]->len *
+ tx->rate->bitrate;
}
}
@@ -774,13 +813,12 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
tx->sta->channel_use_raw += load;
tx->sdata->channel_use_raw += load;
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-/* TODO: implement register/unregister functions for adding TX/RX handlers
- * into ordered list */
-ieee80211_tx_handler ieee80211_tx_handlers[] =
+typedef ieee80211_tx_result (*ieee80211_tx_handler)(struct ieee80211_tx_data *);
+static ieee80211_tx_handler ieee80211_tx_handlers[] =
{
ieee80211_tx_h_check_assoc,
ieee80211_tx_h_sequence,
@@ -801,8 +839,8 @@ ieee80211_tx_handler ieee80211_tx_handlers[] =
* deal with packet injection down monitor interface
* with Radiotap Header -- only called for monitor mode interface
*/
-static ieee80211_txrx_result
-__ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
+static ieee80211_tx_result
+__ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
struct sk_buff *skb)
{
/*
@@ -816,13 +854,15 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
struct ieee80211_radiotap_iterator iterator;
struct ieee80211_radiotap_header *rthdr =
(struct ieee80211_radiotap_header *) skb->data;
- struct ieee80211_hw_mode *mode = tx->local->hw.conf.mode;
+ struct ieee80211_supported_band *sband;
int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len);
- struct ieee80211_tx_control *control = tx->u.tx.control;
+ struct ieee80211_tx_control *control = tx->control;
+
+ sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band];
control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
- tx->flags |= IEEE80211_TXRXD_TX_INJECTED;
- tx->flags &= ~IEEE80211_TXRXD_FRAGMENTED;
+ tx->flags |= IEEE80211_TX_INJECTED;
+ tx->flags &= ~IEEE80211_TX_FRAGMENTED;
/*
* for every radiotap entry that is present
@@ -852,11 +892,13 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
* ieee80211 rate int is in 100kbps units eg, 0x0a=1Mbps
*/
target_rate = (*iterator.this_arg) * 5;
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *r = &mode->rates[i];
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *r;
+
+ r = &sband->bitrates[i];
- if (r->rate == target_rate) {
- tx->u.tx.rate = r;
+ if (r->bitrate == target_rate) {
+ tx->rate = r;
break;
}
}
@@ -870,9 +912,11 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
control->antenna_sel_tx = (*iterator.this_arg) + 1;
break;
+#if 0
case IEEE80211_RADIOTAP_DBM_TX_POWER:
control->power_level = *iterator.this_arg;
break;
+#endif
case IEEE80211_RADIOTAP_FLAGS:
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
@@ -884,7 +928,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
* on transmission
*/
if (skb->len < (iterator.max_length + FCS_LEN))
- return TXRX_DROP;
+ return TX_DROP;
skb_trim(skb, skb->len - FCS_LEN);
}
@@ -892,7 +936,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
control->flags &=
~IEEE80211_TXCTL_DO_NOT_ENCRYPT;
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG)
- tx->flags |= IEEE80211_TXRXD_FRAGMENTED;
+ tx->flags |= IEEE80211_TX_FRAGMENTED;
break;
/*
@@ -907,7 +951,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
}
if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */
- return TXRX_DROP;
+ return TX_DROP;
/*
* remove the radiotap header
@@ -916,14 +960,14 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx,
*/
skb_pull(skb, iterator.max_length);
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
/*
* initialises @tx
*/
-static ieee80211_txrx_result
-__ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+static ieee80211_tx_result
+__ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
struct sk_buff *skb,
struct net_device *dev,
struct ieee80211_tx_control *control)
@@ -931,7 +975,6 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr;
struct ieee80211_sub_if_data *sdata;
- ieee80211_txrx_result res = TXRX_CONTINUE;
int hdrlen;
@@ -940,18 +983,18 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
tx->dev = dev; /* use original interface */
tx->local = local;
tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- tx->u.tx.control = control;
+ tx->control = control;
/*
* Set this flag (used below to indicate "automatic fragmentation"),
* it will be cleared/left by radiotap as desired.
*/
- tx->flags |= IEEE80211_TXRXD_FRAGMENTED;
+ tx->flags |= IEEE80211_TX_FRAGMENTED;
/* process and remove the injection radiotap header */
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (unlikely(sdata->type == IEEE80211_IF_TYPE_MNTR)) {
- if (__ieee80211_parse_tx_radiotap(tx, skb) == TXRX_DROP)
- return TXRX_DROP;
+ if (unlikely(sdata->vif.type == IEEE80211_IF_TYPE_MNTR)) {
+ if (__ieee80211_parse_tx_radiotap(tx, skb) == TX_DROP)
+ return TX_DROP;
/*
* __ieee80211_parse_tx_radiotap has now removed
@@ -966,27 +1009,27 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
tx->fc = le16_to_cpu(hdr->frame_control);
if (is_multicast_ether_addr(hdr->addr1)) {
- tx->flags &= ~IEEE80211_TXRXD_TXUNICAST;
+ tx->flags &= ~IEEE80211_TX_UNICAST;
control->flags |= IEEE80211_TXCTL_NO_ACK;
} else {
- tx->flags |= IEEE80211_TXRXD_TXUNICAST;
+ tx->flags |= IEEE80211_TX_UNICAST;
control->flags &= ~IEEE80211_TXCTL_NO_ACK;
}
- if (tx->flags & IEEE80211_TXRXD_FRAGMENTED) {
- if ((tx->flags & IEEE80211_TXRXD_TXUNICAST) &&
+ if (tx->flags & IEEE80211_TX_FRAGMENTED) {
+ if ((tx->flags & IEEE80211_TX_UNICAST) &&
skb->len + FCS_LEN > local->fragmentation_threshold &&
!local->ops->set_frag_threshold)
- tx->flags |= IEEE80211_TXRXD_FRAGMENTED;
+ tx->flags |= IEEE80211_TX_FRAGMENTED;
else
- tx->flags &= ~IEEE80211_TXRXD_FRAGMENTED;
+ tx->flags &= ~IEEE80211_TX_FRAGMENTED;
}
if (!tx->sta)
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
- else if (tx->sta->clear_dst_mask) {
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
- tx->sta->clear_dst_mask = 0;
+ control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
+ else if (tx->sta->flags & WLAN_STA_CLEAR_PS_FILT) {
+ control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
+ tx->sta->flags &= ~WLAN_STA_CLEAR_PS_FILT;
}
hdrlen = ieee80211_get_hdrlen(tx->fc);
@@ -996,15 +1039,13 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
}
control->flags |= IEEE80211_TXCTL_FIRST_FRAGMENT;
- return res;
+ return TX_CONTINUE;
}
-/* Device in tx->dev has a reference added; use dev_put(tx->dev) when
- * finished with it.
- *
+/*
* NB: @tx is uninitialised when passed in here
*/
-static int ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+static int ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
struct sk_buff *skb,
struct net_device *mdev,
struct ieee80211_tx_control *control)
@@ -1026,13 +1067,14 @@ static int ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
return -ENODEV;
/* initialises tx with control */
__ieee80211_tx_prepare(tx, skb, dev, control);
+ dev_put(dev);
return 0;
}
static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
- struct ieee80211_txrx_data *tx)
+ struct ieee80211_tx_data *tx)
{
- struct ieee80211_tx_control *control = tx->u.tx.control;
+ struct ieee80211_tx_control *control = tx->control;
int ret, i;
if (!ieee80211_qdisc_installed(local->mdev) &&
@@ -1049,20 +1091,20 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
local->mdev->trans_start = jiffies;
ieee80211_led_tx(local, 1);
}
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
IEEE80211_TXCTL_USE_CTS_PROTECT |
- IEEE80211_TXCTL_CLEAR_DST_MASK |
+ IEEE80211_TXCTL_CLEAR_PS_FILT |
IEEE80211_TXCTL_FIRST_FRAGMENT);
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (!tx->u.tx.extra_frag[i])
+ for (i = 0; i < tx->num_extra_frag; i++) {
+ if (!tx->extra_frag[i])
continue;
if (__ieee80211_queue_stopped(local, control->queue))
return IEEE80211_TX_FRAG_AGAIN;
- if (i == tx->u.tx.num_extra_frag) {
- control->tx_rate = tx->u.tx.last_frag_hwrate;
- control->rate = tx->u.tx.last_frag_rate;
- if (tx->flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG)
+ if (i == tx->num_extra_frag) {
+ control->tx_rate = tx->last_frag_rate;
+
+ if (tx->flags & IEEE80211_TX_PROBE_LAST_FRAG)
control->flags |=
IEEE80211_TXCTL_RATE_CTRL_PROBE;
else
@@ -1072,18 +1114,18 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
ieee80211_dump_frame(wiphy_name(local->hw.wiphy),
"TX to low-level driver",
- tx->u.tx.extra_frag[i]);
+ tx->extra_frag[i]);
ret = local->ops->tx(local_to_hw(local),
- tx->u.tx.extra_frag[i],
+ tx->extra_frag[i],
control);
if (ret)
return IEEE80211_TX_FRAG_AGAIN;
local->mdev->trans_start = jiffies;
ieee80211_led_tx(local, 1);
- tx->u.tx.extra_frag[i] = NULL;
+ tx->extra_frag[i] = NULL;
}
- kfree(tx->u.tx.extra_frag);
- tx->u.tx.extra_frag = NULL;
+ kfree(tx->extra_frag);
+ tx->extra_frag = NULL;
}
return IEEE80211_TX_OK;
}
@@ -1094,9 +1136,9 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
ieee80211_tx_handler *handler;
- struct ieee80211_txrx_data tx;
- ieee80211_txrx_result res = TXRX_DROP, res_prepare;
- int ret, i;
+ struct ieee80211_tx_data tx;
+ ieee80211_tx_result res = TX_DROP, res_prepare;
+ int ret, i, retries = 0;
WARN_ON(__ieee80211_queue_pending(local, control->queue));
@@ -1105,59 +1147,52 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
return 0;
}
+ rcu_read_lock();
+
/* initialises tx */
res_prepare = __ieee80211_tx_prepare(&tx, skb, dev, control);
- if (res_prepare == TXRX_DROP) {
+ if (res_prepare == TX_DROP) {
dev_kfree_skb(skb);
+ rcu_read_unlock();
return 0;
}
- /*
- * key references are protected using RCU and this requires that
- * we are in a read-site RCU section during receive processing
- */
- rcu_read_lock();
-
sta = tx.sta;
- tx.u.tx.mode = local->hw.conf.mode;
+ tx.channel = local->hw.conf.channel;
- for (handler = local->tx_handlers; *handler != NULL;
+ for (handler = ieee80211_tx_handlers; *handler != NULL;
handler++) {
res = (*handler)(&tx);
- if (res != TXRX_CONTINUE)
+ if (res != TX_CONTINUE)
break;
}
skb = tx.skb; /* handlers are allowed to change skb */
- if (sta)
- sta_info_put(sta);
-
- if (unlikely(res == TXRX_DROP)) {
+ if (unlikely(res == TX_DROP)) {
I802_DEBUG_INC(local->tx_handlers_drop);
goto drop;
}
- if (unlikely(res == TXRX_QUEUED)) {
+ if (unlikely(res == TX_QUEUED)) {
I802_DEBUG_INC(local->tx_handlers_queued);
rcu_read_unlock();
return 0;
}
- if (tx.u.tx.extra_frag) {
- for (i = 0; i < tx.u.tx.num_extra_frag; i++) {
+ if (tx.extra_frag) {
+ for (i = 0; i < tx.num_extra_frag; i++) {
int next_len, dur;
struct ieee80211_hdr *hdr =
(struct ieee80211_hdr *)
- tx.u.tx.extra_frag[i]->data;
+ tx.extra_frag[i]->data;
- if (i + 1 < tx.u.tx.num_extra_frag) {
- next_len = tx.u.tx.extra_frag[i + 1]->len;
+ if (i + 1 < tx.num_extra_frag) {
+ next_len = tx.extra_frag[i + 1]->len;
} else {
next_len = 0;
- tx.u.tx.rate = tx.u.tx.last_frag_rate;
- tx.u.tx.last_frag_hwrate = tx.u.tx.rate->val;
+ tx.rate = tx.last_frag_rate;
}
dur = ieee80211_duration(&tx, 0, next_len);
hdr->duration_id = cpu_to_le16(dur);
@@ -1187,17 +1222,23 @@ retry:
if (!__ieee80211_queue_stopped(local, control->queue)) {
clear_bit(IEEE80211_LINK_STATE_PENDING,
&local->state[control->queue]);
+ retries++;
+ /*
+ * Driver bug, it's rejecting packets but
+ * not stopping queues.
+ */
+ if (WARN_ON_ONCE(retries > 5))
+ goto drop;
goto retry;
}
memcpy(&store->control, control,
sizeof(struct ieee80211_tx_control));
store->skb = skb;
- store->extra_frag = tx.u.tx.extra_frag;
- store->num_extra_frag = tx.u.tx.num_extra_frag;
- store->last_frag_hwrate = tx.u.tx.last_frag_hwrate;
- store->last_frag_rate = tx.u.tx.last_frag_rate;
+ store->extra_frag = tx.extra_frag;
+ store->num_extra_frag = tx.num_extra_frag;
+ store->last_frag_rate = tx.last_frag_rate;
store->last_frag_rate_ctrl_probe =
- !!(tx.flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG);
+ !!(tx.flags & IEEE80211_TX_PROBE_LAST_FRAG);
}
rcu_read_unlock();
return 0;
@@ -1205,10 +1246,10 @@ retry:
drop:
if (skb)
dev_kfree_skb(skb);
- for (i = 0; i < tx.u.tx.num_extra_frag; i++)
- if (tx.u.tx.extra_frag[i])
- dev_kfree_skb(tx.u.tx.extra_frag[i]);
- kfree(tx.u.tx.extra_frag);
+ for (i = 0; i < tx.num_extra_frag; i++)
+ if (tx.extra_frag[i])
+ dev_kfree_skb(tx.extra_frag[i]);
+ kfree(tx.extra_frag);
rcu_read_unlock();
return 0;
}
@@ -1260,14 +1301,18 @@ int ieee80211_master_start_xmit(struct sk_buff *skb,
}
}
- control.ifindex = odev->ifindex;
- control.type = osdata->type;
+ control.vif = &osdata->vif;
+ control.type = osdata->vif.type;
if (pkt_data->flags & IEEE80211_TXPD_REQ_TX_STATUS)
control.flags |= IEEE80211_TXCTL_REQ_TX_STATUS;
if (pkt_data->flags & IEEE80211_TXPD_DO_NOT_ENCRYPT)
control.flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
if (pkt_data->flags & IEEE80211_TXPD_REQUEUE)
control.flags |= IEEE80211_TXCTL_REQUEUE;
+ if (pkt_data->flags & IEEE80211_TXPD_EAPOL_FRAME)
+ control.flags |= IEEE80211_TXCTL_EAPOL_FRAME;
+ if (pkt_data->flags & IEEE80211_TXPD_AMPDU)
+ control.flags |= IEEE80211_TXCTL_AMPDU;
control.queue = pkt_data->queue;
ret = ieee80211_tx(odev, skb, &control);
@@ -1354,12 +1399,14 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
struct ieee80211_tx_packet_data *pkt_data;
struct ieee80211_sub_if_data *sdata;
int ret = 1, head_need;
- u16 ethertype, hdrlen, fc;
+ u16 ethertype, hdrlen, meshhdrlen = 0, fc;
struct ieee80211_hdr hdr;
+ struct ieee80211s_hdr mesh_hdr;
const u8 *encaps_data;
int encaps_len, skip_header_bytes;
int nh_pos, h_pos;
struct sta_info *sta;
+ u32 sta_flags = 0;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (unlikely(skb->len < ETH_HLEN)) {
@@ -1375,10 +1422,9 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
/* convert Ethernet header to proper 802.11 header (based on
* operation mode) */
ethertype = (skb->data[12] << 8) | skb->data[13];
- /* TODO: handling for 802.1x authorized/unauthorized port */
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
- switch (sdata->type) {
+ switch (sdata->vif.type) {
case IEEE80211_IF_TYPE_AP:
case IEEE80211_IF_TYPE_VLAN:
fc |= IEEE80211_FCTL_FROMDS;
@@ -1397,6 +1443,37 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
hdrlen = 30;
break;
+#ifdef CONFIG_MAC80211_MESH
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+ /* RA TA DA SA */
+ if (is_multicast_ether_addr(skb->data))
+ memcpy(hdr.addr1, skb->data, ETH_ALEN);
+ else if (mesh_nexthop_lookup(hdr.addr1, skb, dev))
+ return 0;
+ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+ memcpy(hdr.addr3, skb->data, ETH_ALEN);
+ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+ if (skb->pkt_type == PACKET_OTHERHOST) {
+ /* Forwarded frame, keep mesh ttl and seqnum */
+ struct ieee80211s_hdr *prev_meshhdr;
+ prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb);
+ meshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr);
+ memcpy(&mesh_hdr, prev_meshhdr, meshhdrlen);
+ sdata->u.sta.mshstats.fwded_frames++;
+ } else {
+ if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
+ /* Do not send frames with mesh_ttl == 0 */
+ sdata->u.sta.mshstats.dropped_frames_ttl++;
+ ret = 0;
+ goto fail;
+ }
+ meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr,
+ sdata);
+ }
+ hdrlen = 30;
+ break;
+#endif
case IEEE80211_IF_TYPE_STA:
fc |= IEEE80211_FCTL_TODS;
/* BSSID SA DA */
@@ -1417,14 +1494,47 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
goto fail;
}
+ /*
+ * There's no need to try to look up the destination
+ * if it is a multicast address (which can only happen
+ * in AP mode)
+ */
+ if (!is_multicast_ether_addr(hdr.addr1)) {
+ rcu_read_lock();
+ sta = sta_info_get(local, hdr.addr1);
+ if (sta)
+ sta_flags = sta->flags;
+ rcu_read_unlock();
+ }
+
/* receiver is QoS enabled, use a QoS type frame */
- sta = sta_info_get(local, hdr.addr1);
- if (sta) {
- if (sta->flags & WLAN_STA_WME) {
- fc |= IEEE80211_STYPE_QOS_DATA;
- hdrlen += 2;
- }
- sta_info_put(sta);
+ if (sta_flags & WLAN_STA_WME) {
+ fc |= IEEE80211_STYPE_QOS_DATA;
+ hdrlen += 2;
+ }
+
+ /*
+ * Drop unicast frames to unauthorised stations unless they are
+ * EAPOL frames from the local station.
+ */
+ if (unlikely(!is_multicast_ether_addr(hdr.addr1) &&
+ !(sta_flags & WLAN_STA_AUTHORIZED) &&
+ !(ethertype == ETH_P_PAE &&
+ compare_ether_addr(dev->dev_addr,
+ skb->data + ETH_ALEN) == 0))) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ DECLARE_MAC_BUF(mac);
+
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped frame to %s"
+ " (unauthorized port)\n", dev->name,
+ print_mac(mac, hdr.addr1));
+#endif
+
+ I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
+
+ ret = 0;
+ goto fail;
}
hdr.frame_control = cpu_to_le16(fc);
@@ -1462,7 +1572,7 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
* build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
* alloc_skb() (net/core/skbuff.c)
*/
- head_need = hdrlen + encaps_len + local->tx_headroom;
+ head_need = hdrlen + encaps_len + meshhdrlen + local->tx_headroom;
head_need -= skb_headroom(skb);
/* We are going to modify skb data, so make a copy of it if happens to
@@ -1496,6 +1606,12 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
h_pos += encaps_len;
}
+ if (meshhdrlen > 0) {
+ memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen);
+ nh_pos += meshhdrlen;
+ h_pos += meshhdrlen;
+ }
+
if (fc & IEEE80211_STYPE_QOS_DATA) {
__le16 *qos_control;
@@ -1515,6 +1631,8 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
pkt_data->ifindex = dev->ifindex;
+ if (ethertype == ETH_P_PAE)
+ pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME;
skb->dev = local->mdev;
sdata->stats.tx_packets++;
@@ -1563,7 +1681,7 @@ void ieee80211_tx_pending(unsigned long data)
struct ieee80211_local *local = (struct ieee80211_local *)data;
struct net_device *dev = local->mdev;
struct ieee80211_tx_stored_packet *store;
- struct ieee80211_txrx_data tx;
+ struct ieee80211_tx_data tx;
int i, ret, reschedule = 0;
netif_tx_lock_bh(dev);
@@ -1575,14 +1693,13 @@ void ieee80211_tx_pending(unsigned long data)
continue;
}
store = &local->pending_packet[i];
- tx.u.tx.control = &store->control;
- tx.u.tx.extra_frag = store->extra_frag;
- tx.u.tx.num_extra_frag = store->num_extra_frag;
- tx.u.tx.last_frag_hwrate = store->last_frag_hwrate;
- tx.u.tx.last_frag_rate = store->last_frag_rate;
+ tx.control = &store->control;
+ tx.extra_frag = store->extra_frag;
+ tx.num_extra_frag = store->num_extra_frag;
+ tx.last_frag_rate = store->last_frag_rate;
tx.flags = 0;
if (store->last_frag_rate_ctrl_probe)
- tx.flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
+ tx.flags |= IEEE80211_TX_PROBE_LAST_FRAG;
ret = __ieee80211_tx(local, store->skb, &tx);
if (ret) {
if (ret == IEEE80211_TX_FRAG_AGAIN)
@@ -1607,7 +1724,8 @@ void ieee80211_tx_pending(unsigned long data)
static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
struct ieee80211_if_ap *bss,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ struct beacon_data *beacon)
{
u8 *pos, *tim;
int aid0 = 0;
@@ -1615,7 +1733,6 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
/* Generate bitmap for TIM only if there are any STAs in power save
* mode. */
- read_lock_bh(&local->sta_lock);
if (atomic_read(&bss->num_sta_ps) > 0)
/* in the hope that this is faster than
* checking byte-for-byte */
@@ -1623,7 +1740,7 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
IEEE80211_MAX_AID+1);
if (bss->dtim_count == 0)
- bss->dtim_count = bss->dtim_period - 1;
+ bss->dtim_count = beacon->dtim_period - 1;
else
bss->dtim_count--;
@@ -1631,7 +1748,7 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
*pos++ = WLAN_EID_TIM;
*pos++ = 4;
*pos++ = bss->dtim_count;
- *pos++ = bss->dtim_period;
+ *pos++ = beacon->dtim_period;
if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
aid0 = 1;
@@ -1666,10 +1783,10 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
*pos++ = aid0; /* Bitmap control */
*pos++ = 0; /* Part Virt Bitmap */
}
- read_unlock_bh(&local->sta_lock);
}
-struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id,
+struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
struct ieee80211_tx_control *control)
{
struct ieee80211_local *local = hw_to_local(hw);
@@ -1677,85 +1794,139 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id,
struct net_device *bdev;
struct ieee80211_sub_if_data *sdata = NULL;
struct ieee80211_if_ap *ap = NULL;
- struct ieee80211_rate *rate;
- struct rate_control_extra extra;
- u8 *b_head, *b_tail;
- int bh_len, bt_len;
+ struct rate_selection rsel;
+ struct beacon_data *beacon;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_mgmt *mgmt;
+ int *num_beacons;
+ bool err = true;
+ u8 *pos;
-#if 0 /* Not in RHEL5 */
- bdev = dev_get_by_index(&init_net, if_id);
-#else
- bdev = dev_get_by_index(if_id);
-#endif
- if (bdev) {
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ rcu_read_lock();
+
+ sdata = vif_to_sdata(vif);
+ bdev = sdata->dev;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
ap = &sdata->u.ap;
- dev_put(bdev);
- }
+ beacon = rcu_dereference(ap->beacon);
+ if (ap && beacon) {
+ /*
+ * headroom, head length,
+ * tail length and maximum TIM length
+ */
+ skb = dev_alloc_skb(local->tx_headroom +
+ beacon->head_len +
+ beacon->tail_len + 256);
+ if (!skb)
+ goto out;
- if (!ap || sdata->type != IEEE80211_IF_TYPE_AP ||
- !ap->beacon_head) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "no beacon data avail for idx=%d "
- "(%s)\n", if_id, bdev ? bdev->name : "N/A");
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- return NULL;
- }
+ skb_reserve(skb, local->tx_headroom);
+ memcpy(skb_put(skb, beacon->head_len), beacon->head,
+ beacon->head_len);
- /* Assume we are generating the normal beacon locally */
- b_head = ap->beacon_head;
- b_tail = ap->beacon_tail;
- bh_len = ap->beacon_head_len;
- bt_len = ap->beacon_tail_len;
+ ieee80211_include_sequence(sdata,
+ (struct ieee80211_hdr *)skb->data);
- skb = dev_alloc_skb(local->tx_headroom +
- bh_len + bt_len + 256 /* maximum TIM len */);
- if (!skb)
- return NULL;
+ /*
+ * Not very nice, but we want to allow the driver to call
+ * ieee80211_beacon_get() as a response to the set_tim()
+ * callback. That, however, is already invoked under the
+ * sta_lock to guarantee consistent and race-free update
+ * of the tim bitmap in mac80211 and the driver.
+ */
+ if (local->tim_in_locked_section) {
+ ieee80211_beacon_add_tim(local, ap, skb, beacon);
+ } else {
+ unsigned long flags;
- skb_reserve(skb, local->tx_headroom);
- memcpy(skb_put(skb, bh_len), b_head, bh_len);
+ spin_lock_irqsave(&local->sta_lock, flags);
+ ieee80211_beacon_add_tim(local, ap, skb, beacon);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+ }
- ieee80211_include_sequence(sdata, (struct ieee80211_hdr *)skb->data);
+ if (beacon->tail)
+ memcpy(skb_put(skb, beacon->tail_len),
+ beacon->tail, beacon->tail_len);
- ieee80211_beacon_add_tim(local, ap, skb);
+ num_beacons = &ap->num_beacons;
- if (b_tail) {
- memcpy(skb_put(skb, bt_len), b_tail, bt_len);
+ err = false;
+ }
+ } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ /* headroom, head length, tail length and maximum TIM length */
+ skb = dev_alloc_skb(local->tx_headroom + 400);
+ if (!skb)
+ goto out;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+ memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_BEACON);
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+ /* BSSID is left zeroed, wildcard value */
+ mgmt->u.beacon.beacon_int =
+ cpu_to_le16(local->hw.conf.beacon_int);
+ mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */
+
+ pos = skb_put(skb, 2);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = 0x0;
+
+ mesh_mgmt_ies_add(skb, sdata->dev);
+
+ num_beacons = &sdata->u.sta.num_beacons;
+
+ err = false;
}
- if (control) {
- memset(&extra, 0, sizeof(extra));
- extra.mode = local->oper_hw_mode;
+ if (err) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "no beacon data avail for %s\n",
+ bdev->name);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ skb = NULL;
+ goto out;
+ }
- rate = rate_control_get_rate(local, local->mdev, skb, &extra);
- if (!rate) {
+ if (control) {
+ rate_control_get_rate(local->mdev, sband, skb, &rsel);
+ if (!rsel.rate) {
if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: ieee80211_beacon_get: no rate "
- "found\n", wiphy_name(local->hw.wiphy));
+ printk(KERN_DEBUG "%s: ieee80211_beacon_get: "
+ "no rate found\n",
+ wiphy_name(local->hw.wiphy));
}
dev_kfree_skb(skb);
- return NULL;
+ skb = NULL;
+ goto out;
}
- control->tx_rate =
- ((sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) &&
- (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
- rate->val2 : rate->val;
+ control->vif = vif;
+ control->tx_rate = rsel.rate;
+ if (sdata->bss_conf.use_short_preamble &&
+ rsel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control->power_level = local->hw.conf.power_level;
control->flags |= IEEE80211_TXCTL_NO_ACK;
+ control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
control->retry_limit = 1;
- control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+ control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT;
}
-
- ap->num_beacons++;
+ (*num_beacons)++;
+out:
+ rcu_read_unlock();
return skb;
}
EXPORT_SYMBOL(ieee80211_beacon_get);
-void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
+void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl,
struct ieee80211_rts *rts)
@@ -1765,13 +1936,14 @@ void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS;
rts->frame_control = cpu_to_le16(fctl);
- rts->duration = ieee80211_rts_duration(hw, if_id, frame_len, frame_txctl);
+ rts->duration = ieee80211_rts_duration(hw, vif, frame_len,
+ frame_txctl);
memcpy(rts->ra, hdr->addr1, sizeof(rts->ra));
memcpy(rts->ta, hdr->addr2, sizeof(rts->ta));
}
EXPORT_SYMBOL(ieee80211_rts_get);
-void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
+void ieee80211_ctstoself_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const void *frame, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl,
struct ieee80211_cts *cts)
@@ -1781,38 +1953,44 @@ void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS;
cts->frame_control = cpu_to_le16(fctl);
- cts->duration = ieee80211_ctstoself_duration(hw, if_id, frame_len, frame_txctl);
+ cts->duration = ieee80211_ctstoself_duration(hw, vif,
+ frame_len, frame_txctl);
memcpy(cts->ra, hdr->addr1, sizeof(cts->ra));
}
EXPORT_SYMBOL(ieee80211_ctstoself_get);
struct sk_buff *
-ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
+ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
struct ieee80211_tx_control *control)
{
struct ieee80211_local *local = hw_to_local(hw);
struct sk_buff *skb;
struct sta_info *sta;
ieee80211_tx_handler *handler;
- struct ieee80211_txrx_data tx;
- ieee80211_txrx_result res = TXRX_DROP;
+ struct ieee80211_tx_data tx;
+ ieee80211_tx_result res = TX_DROP;
struct net_device *bdev;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_ap *bss = NULL;
+ struct beacon_data *beacon;
-#if 0 /* Not in RHEL5 */
- bdev = dev_get_by_index(&init_net, if_id);
-#else
- bdev = dev_get_by_index(if_id);
-#endif
- if (bdev) {
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- bss = &sdata->u.ap;
- dev_put(bdev);
- }
- if (!bss || sdata->type != IEEE80211_IF_TYPE_AP || !bss->beacon_head)
+ sdata = vif_to_sdata(vif);
+ bdev = sdata->dev;
+
+
+ if (!bss)
return NULL;
+ rcu_read_lock();
+ beacon = rcu_dereference(bss->beacon);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_AP || !beacon ||
+ !beacon->head) {
+ rcu_read_unlock();
+ return NULL;
+ }
+
if (bss->dtim_count != 0)
return NULL; /* send buffered bc/mc only after DTIM beacon */
memset(control, 0, sizeof(*control));
@@ -1837,28 +2015,26 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
dev_kfree_skb_any(skb);
}
sta = tx.sta;
- tx.flags |= IEEE80211_TXRXD_TXPS_BUFFERED;
- tx.u.tx.mode = local->hw.conf.mode;
+ tx.flags |= IEEE80211_TX_PS_BUFFERED;
+ tx.channel = local->hw.conf.channel;
- for (handler = local->tx_handlers; *handler != NULL; handler++) {
+ for (handler = ieee80211_tx_handlers; *handler != NULL; handler++) {
res = (*handler)(&tx);
- if (res == TXRX_DROP || res == TXRX_QUEUED)
+ if (res == TX_DROP || res == TX_QUEUED)
break;
}
- dev_put(tx.dev);
skb = tx.skb; /* handlers are allowed to change skb */
- if (res == TXRX_DROP) {
+ if (res == TX_DROP) {
I802_DEBUG_INC(local->tx_handlers_drop);
dev_kfree_skb(skb);
skb = NULL;
- } else if (res == TXRX_QUEUED) {
+ } else if (res == TX_QUEUED) {
I802_DEBUG_INC(local->tx_handlers_queued);
skb = NULL;
}
- if (sta)
- sta_info_put(sta);
+ rcu_read_unlock();
return skb;
}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 5d91815..b7d5503 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -26,10 +26,13 @@
#include <net/cfg80211.h>
#if 0 /* Not in RHEL5 */
#include <net/rtnetlink.h>
+#else
+#include <linux/rtnetlink.h>
#endif
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
+#include "mesh.h"
#include "wme.h"
/* privid for wiphys to determine whether they belong to us or not */
@@ -37,115 +40,29 @@ void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
-const unsigned char rfc1042_header[] =
+const unsigned char rfc1042_header[] __aligned(2) =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
-const unsigned char bridge_tunnel_header[] =
+const unsigned char bridge_tunnel_header[] __aligned(2) =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
-/* No encapsulation header if EtherType < 0x600 (=length) */
-static const unsigned char eapol_header[] =
- { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e };
-
-
-static int rate_list_match(const int *rate_list, int rate)
-{
- int i;
-
- if (!rate_list)
- return 0;
-
- for (i = 0; rate_list[i] >= 0; i++)
- if (rate_list[i] == rate)
- return 1;
-
- return 0;
-}
-void ieee80211_prepare_rates(struct ieee80211_local *local,
- struct ieee80211_hw_mode *mode)
-{
- int i;
-
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
-
- rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
- IEEE80211_RATE_BASIC);
-
- if (local->supp_rates[mode->mode]) {
- if (!rate_list_match(local->supp_rates[mode->mode],
- rate->rate))
- continue;
- }
-
- rate->flags |= IEEE80211_RATE_SUPPORTED;
-
- /* Use configured basic rate set if it is available. If not,
- * use defaults that are sane for most cases. */
- if (local->basic_rates[mode->mode]) {
- if (rate_list_match(local->basic_rates[mode->mode],
- rate->rate))
- rate->flags |= IEEE80211_RATE_BASIC;
- } else switch (mode->mode) {
- case MODE_IEEE80211A:
- if (rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_BASIC;
- break;
- case MODE_IEEE80211B:
- if (rate->rate == 10 || rate->rate == 20)
- rate->flags |= IEEE80211_RATE_BASIC;
- break;
- case MODE_IEEE80211G:
- if (rate->rate == 10 || rate->rate == 20 ||
- rate->rate == 55 || rate->rate == 110)
- rate->flags |= IEEE80211_RATE_BASIC;
- break;
- case NUM_IEEE80211_MODES:
- /* not useful */
- break;
- }
-
- /* Set ERP and MANDATORY flags based on phymode */
- switch (mode->mode) {
- case MODE_IEEE80211A:
- if (rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_MANDATORY;
- break;
- case MODE_IEEE80211B:
- if (rate->rate == 10)
- rate->flags |= IEEE80211_RATE_MANDATORY;
- break;
- case MODE_IEEE80211G:
- if (rate->rate == 10 || rate->rate == 20 ||
- rate->rate == 55 || rate->rate == 110 ||
- rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_MANDATORY;
- break;
- case NUM_IEEE80211_MODES:
- /* not useful */
- break;
- }
- if (ieee80211_is_erp_rate(mode->mode, rate->rate))
- rate->flags |= IEEE80211_RATE_ERP;
- }
-}
-
-u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+ enum ieee80211_if_types type)
{
u16 fc;
- if (len < 24)
+ /* drop ACK/CTS frames and incorrect hdr len (ctrl) */
+ if (len < 16)
return NULL;
fc = le16_to_cpu(hdr->frame_control);
switch (fc & IEEE80211_FCTL_FTYPE) {
case IEEE80211_FTYPE_DATA:
+ if (len < 24) /* drop incorrect hdr len (data) */
+ return NULL;
switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
case IEEE80211_FCTL_TODS:
return hdr->addr1;
@@ -158,10 +75,24 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
}
break;
case IEEE80211_FTYPE_MGMT:
+ if (len < 24) /* drop incorrect hdr len (mgmt) */
+ return NULL;
return hdr->addr3;
case IEEE80211_FTYPE_CTL:
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
return hdr->addr1;
+ else if ((fc & IEEE80211_FCTL_STYPE) ==
+ IEEE80211_STYPE_BACK_REQ) {
+ switch (type) {
+ case IEEE80211_IF_TYPE_STA:
+ return hdr->addr2;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_VLAN:
+ return hdr->addr1;
+ default:
+ return NULL;
+ }
+ }
else
return NULL;
}
@@ -222,30 +153,35 @@ int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
}
EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
-int ieee80211_is_eapol(const struct sk_buff *skb, int hdrlen)
+int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
{
- if (unlikely(skb->len < 10))
- return 0;
-
- if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
- memcmp(skb->data + hdrlen, eapol_header,
- sizeof(eapol_header)) == 0))
- return 1;
-
- return 0;
+ int ae = meshhdr->flags & IEEE80211S_FLAGS_AE;
+ /* 7.1.3.5a.2 */
+ switch (ae) {
+ case 0:
+ return 6;
+ case 1:
+ return 12;
+ case 2:
+ return 18;
+ case 3:
+ return 24;
+ default:
+ return 6;
+ }
}
-void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
struct ieee80211_hdr *fhdr;
int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ for (i = 0; i < tx->num_extra_frag; i++) {
fhdr = (struct ieee80211_hdr *)
- tx->u.tx.extra_frag[i]->data;
+ tx->extra_frag[i]->data;
fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
}
}
@@ -265,7 +201,7 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
* DIV_ROUND_UP() operations.
*/
- if (local->hw.conf.phymode == MODE_IEEE80211A || erp) {
+ if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ || erp) {
/*
* OFDM:
*
@@ -305,132 +241,92 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
}
/* Exported duration function for driver use */
-__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int if_id,
- size_t frame_len, int rate)
+__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ size_t frame_len,
+ struct ieee80211_rate *rate)
{
struct ieee80211_local *local = hw_to_local(hw);
-#if 0 /* Not in RHEL5 */
- struct net_device *bdev = dev_get_by_index(&init_net, if_id);
-#else
- struct net_device *bdev = dev_get_by_index(if_id);
-#endif
- struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
u16 dur;
int erp;
- if (unlikely(!bdev))
- return 0;
+ erp = 0;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
- dur = ieee80211_frame_duration(local, frame_len, rate,
- erp, sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE);
+ dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp,
+ sdata->bss_conf.use_short_preamble);
- dev_put(bdev);
return cpu_to_le16(dur);
}
EXPORT_SYMBOL(ieee80211_generic_frame_duration);
-__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, int if_id,
- size_t frame_len,
+__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, size_t frame_len,
const struct ieee80211_tx_control *frame_txctl)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate;
-#if 0 /* Not in RHEL5 */
- struct net_device *bdev = dev_get_by_index(&init_net, if_id);
-#else
- struct net_device *bdev = dev_get_by_index(if_id);
-#endif
- struct ieee80211_sub_if_data *sdata;
- int short_preamble;
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ bool short_preamble;
int erp;
u16 dur;
- if (unlikely(!bdev))
- return 0;
+ short_preamble = sdata->bss_conf.use_short_preamble;
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- short_preamble = sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE;
+ rate = frame_txctl->rts_cts_rate;
- rate = frame_txctl->rts_rate;
- erp = !!(rate->flags & IEEE80211_RATE_ERP);
+ erp = 0;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
/* CTS duration */
- dur = ieee80211_frame_duration(local, 10, rate->rate,
+ dur = ieee80211_frame_duration(local, 10, rate->bitrate,
erp, short_preamble);
/* Data frame duration */
- dur += ieee80211_frame_duration(local, frame_len, rate->rate,
+ dur += ieee80211_frame_duration(local, frame_len, rate->bitrate,
erp, short_preamble);
/* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->rate,
+ dur += ieee80211_frame_duration(local, 10, rate->bitrate,
erp, short_preamble);
- dev_put(bdev);
return cpu_to_le16(dur);
}
EXPORT_SYMBOL(ieee80211_rts_duration);
-__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, int if_id,
+__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
size_t frame_len,
const struct ieee80211_tx_control *frame_txctl)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate;
-#if 0 /* Not in RHEL5 */
- struct net_device *bdev = dev_get_by_index(&init_net, if_id);
-#else
- struct net_device *bdev = dev_get_by_index(if_id);
-#endif
- struct ieee80211_sub_if_data *sdata;
- int short_preamble;
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ bool short_preamble;
int erp;
u16 dur;
- if (unlikely(!bdev))
- return 0;
+ short_preamble = sdata->bss_conf.use_short_preamble;
- sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
- short_preamble = sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE;
-
- rate = frame_txctl->rts_rate;
- erp = !!(rate->flags & IEEE80211_RATE_ERP);
+ rate = frame_txctl->rts_cts_rate;
+ erp = 0;
+ if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
+ erp = rate->flags & IEEE80211_RATE_ERP_G;
/* Data frame duration */
- dur = ieee80211_frame_duration(local, frame_len, rate->rate,
+ dur = ieee80211_frame_duration(local, frame_len, rate->bitrate,
erp, short_preamble);
if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
/* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->rate,
+ dur += ieee80211_frame_duration(local, 10, rate->bitrate,
erp, short_preamble);
}
- dev_put(bdev);
return cpu_to_le16(dur);
}
EXPORT_SYMBOL(ieee80211_ctstoself_duration);
-struct ieee80211_rate *
-ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
-{
- struct ieee80211_hw_mode *mode;
- int r;
-
- list_for_each_entry(mode, &local->modes_list, list) {
- if (mode->mode != phymode)
- continue;
- for (r = 0; r < mode->num_rates; r++) {
- struct ieee80211_rate *rate = &mode->rates[r];
- if (rate->val == hw_rate ||
- (rate->flags & IEEE80211_RATE_PREAMBLE2 &&
- rate->val2 == hw_rate))
- return rate;
- }
- }
-
- return NULL;
-}
-
void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
{
struct ieee80211_local *local = hw_to_local(hw);
@@ -490,10 +386,46 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL(ieee80211_wake_queues);
-void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
- void (*iterator)(void *data, u8 *mac,
- int if_id),
- void *data)
+void ieee80211_iterate_active_interfaces(
+ struct ieee80211_hw *hw,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata;
+
+ rtnl_lock();
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_INVALID:
+ case IEEE80211_IF_TYPE_MNTR:
+ case IEEE80211_IF_TYPE_VLAN:
+ continue;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ case IEEE80211_IF_TYPE_WDS:
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ break;
+ }
+ if (sdata->dev == local->mdev)
+ continue;
+ if (netif_running(sdata->dev))
+ iterator(data, sdata->dev->dev_addr,
+ &sdata->vif);
+ }
+
+ rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
+
+void ieee80211_iterate_active_interfaces_atomic(
+ struct ieee80211_hw *hw,
+ void (*iterator)(void *data, u8 *mac,
+ struct ieee80211_vif *vif),
+ void *data)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
@@ -501,7 +433,7 @@ void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- switch (sdata->type) {
+ switch (sdata->vif.type) {
case IEEE80211_IF_TYPE_INVALID:
case IEEE80211_IF_TYPE_MNTR:
case IEEE80211_IF_TYPE_VLAN:
@@ -510,15 +442,16 @@ void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
case IEEE80211_IF_TYPE_WDS:
+ case IEEE80211_IF_TYPE_MESH_POINT:
break;
}
if (sdata->dev == local->mdev)
continue;
if (netif_running(sdata->dev))
iterator(data, sdata->dev->dev_addr,
- sdata->dev->ifindex);
+ &sdata->vif);
}
rcu_read_unlock();
}
-EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
+EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 2219ed5..7f62dae 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -301,39 +301,39 @@ u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key)
return NULL;
}
-ieee80211_txrx_result
-ieee80211_crypto_wep_decrypt(struct ieee80211_txrx_data *rx)
+ieee80211_rx_result
+ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx)
{
if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
- if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) {
+ if (!(rx->status->flag & RX_FLAG_DECRYPTED)) {
if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) {
#ifdef CONFIG_MAC80211_DEBUG
if (net_ratelimit())
printk(KERN_DEBUG "%s: RX WEP frame, decrypt "
"failed\n", rx->dev->name);
#endif /* CONFIG_MAC80211_DEBUG */
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
- } else if (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED)) {
+ } else if (!(rx->status->flag & RX_FLAG_IV_STRIPPED)) {
ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
/* remove ICV */
skb_trim(rx->skb, rx->skb->len - 4);
}
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
-static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
+static int wep_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
{
if (!(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
return -1;
} else {
- tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
+ tx->control->key_idx = tx->key->conf.hw_key_idx;
if (tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) {
if (!ieee80211_wep_add_iv(tx->local, skb, tx->key))
return -1;
@@ -342,38 +342,28 @@ static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
return 0;
}
-ieee80211_txrx_result
-ieee80211_crypto_wep_encrypt(struct ieee80211_txrx_data *tx)
+ieee80211_tx_result
+ieee80211_crypto_wep_encrypt(struct ieee80211_tx_data *tx)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 fc;
-
- fc = le16_to_cpu(hdr->frame_control);
-
- if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
- ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
- (fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
- return TXRX_CONTINUE;
-
- tx->u.tx.control->iv_len = WEP_IV_LEN;
- tx->u.tx.control->icv_len = WEP_ICV_LEN;
- ieee80211_tx_set_iswep(tx);
+ tx->control->iv_len = WEP_IV_LEN;
+ tx->control->icv_len = WEP_ICV_LEN;
+ ieee80211_tx_set_protected(tx);
if (wep_encrypt_skb(tx, tx->skb) < 0) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_wep);
- return TXRX_DROP;
+ return TX_DROP;
}
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) {
+ for (i = 0; i < tx->num_extra_frag; i++) {
+ if (wep_encrypt_skb(tx, tx->extra_frag[i]) < 0) {
I802_DEBUG_INC(tx->local->
tx_handlers_drop_wep);
- return TXRX_DROP;
+ return TX_DROP;
}
}
}
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
diff --git a/net/mac80211/wep.h b/net/mac80211/wep.h
index 5b52bdb..2482331 100644
--- a/net/mac80211/wep.h
+++ b/net/mac80211/wep.h
@@ -14,7 +14,7 @@
#include <linux/skbuff.h>
#include <linux/types.h>
#include "ieee80211_i.h"
-#include "ieee80211_key.h"
+#include "key.h"
int ieee80211_wep_init(struct ieee80211_local *local);
void ieee80211_wep_free(struct ieee80211_local *local);
@@ -28,9 +28,9 @@ int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
struct ieee80211_key *key);
u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key);
-ieee80211_txrx_result
-ieee80211_crypto_wep_decrypt(struct ieee80211_txrx_data *rx);
-ieee80211_txrx_result
-ieee80211_crypto_wep_encrypt(struct ieee80211_txrx_data *tx);
+ieee80211_rx_result
+ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx);
+ieee80211_tx_result
+ieee80211_crypto_wep_encrypt(struct ieee80211_tx_data *tx);
#endif /* WEP_H */
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
new file mode 100644
index 0000000..e840421
--- /dev/null
+++ b/net/mac80211/wext.c
@@ -0,0 +1,1171 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <asm/uaccess.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "led.h"
+#include "rate.h"
+#include "wpa.h"
+#include "aes_ccm.h"
+
+
+static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
+ int idx, int alg, int remove,
+ int set_tx_key, const u8 *_key,
+ size_t key_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_key *key;
+ struct ieee80211_sub_if_data *sdata;
+ int err;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
+ dev->name, idx);
+ return -EINVAL;
+ }
+
+ if (remove) {
+ rcu_read_lock();
+
+ err = 0;
+
+ if (is_broadcast_ether_addr(sta_addr)) {
+ key = sdata->keys[idx];
+ } else {
+ sta = sta_info_get(local, sta_addr);
+ if (!sta) {
+ err = -ENOENT;
+ goto out_unlock;
+ }
+ key = sta->key;
+ }
+
+ ieee80211_key_free(key);
+ } else {
+ key = ieee80211_key_alloc(alg, idx, key_len, _key);
+ if (!key)
+ return -ENOMEM;
+
+ sta = NULL;
+ err = 0;
+
+ rcu_read_lock();
+
+ if (!is_broadcast_ether_addr(sta_addr)) {
+ set_tx_key = 0;
+ /*
+ * According to the standard, the key index of a
+ * pairwise key must be zero. However, some AP are
+ * broken when it comes to WEP key indices, so we
+ * work around this.
+ */
+ if (idx != 0 && alg != ALG_WEP) {
+ ieee80211_key_free(key);
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ sta = sta_info_get(local, sta_addr);
+ if (!sta) {
+ ieee80211_key_free(key);
+ err = -ENOENT;
+ goto out_unlock;
+ }
+ }
+
+ if (alg == ALG_WEP &&
+ key_len != LEN_WEP40 && key_len != LEN_WEP104) {
+ ieee80211_key_free(key);
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ ieee80211_key_link(key, sdata, sta);
+
+ if (set_tx_key || (!sta && !sdata->default_key && key))
+ ieee80211_set_default_key(sdata, idx);
+ }
+
+ out_unlock:
+ rcu_read_unlock();
+
+ return err;
+}
+
+static int ieee80211_ioctl_siwgenie(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
+ return -EOPNOTSUPP;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
+ if (ret)
+ return ret;
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int ieee80211_ioctl_giwname(struct net_device *dev,
+ struct iw_request_info *info,
+ char *name, char *extra)
+{
+ strcpy(name, "IEEE 802.11");
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwrange(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_range *range = (struct iw_range *) extra;
+ enum ieee80211_band band;
+ int c = 0;
+
+ data->length = sizeof(struct iw_range);
+ memset(range, 0, sizeof(struct iw_range));
+
+ range->we_version_compiled = WIRELESS_EXT;
+ range->we_version_source = 21;
+ range->retry_capa = IW_RETRY_LIMIT;
+ range->retry_flags = IW_RETRY_LIMIT;
+ range->min_retry = 0;
+ range->max_retry = 255;
+ range->min_rts = 0;
+ range->max_rts = 2347;
+ range->min_frag = 256;
+ range->max_frag = 2346;
+
+ range->encoding_size[0] = 5;
+ range->encoding_size[1] = 13;
+ range->num_encoding_sizes = 2;
+ range->max_encoding_tokens = NUM_DEFAULT_KEYS;
+
+ range->max_qual.qual = local->hw.max_signal;
+ range->max_qual.level = local->hw.max_rssi;
+ range->max_qual.noise = local->hw.max_noise;
+ range->max_qual.updated = local->wstats_flags;
+
+ range->avg_qual.qual = local->hw.max_signal/2;
+ range->avg_qual.level = 0;
+ range->avg_qual.noise = 0;
+ range->avg_qual.updated = local->wstats_flags;
+
+ range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
+ IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
+
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
+ int i;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[band];
+
+ if (!sband)
+ continue;
+
+ for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
+ struct ieee80211_channel *chan = &sband->channels[i];
+
+ if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
+ range->freq[c].i =
+ ieee80211_frequency_to_channel(
+ chan->center_freq);
+ range->freq[c].m = chan->center_freq;
+ range->freq[c].e = 6;
+ c++;
+ }
+ }
+ }
+ range->num_channels = c;
+ range->num_frequency = c;
+
+ IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
+ IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
+ IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
+
+ range->scan_capa |= IW_SCAN_CAPA_ESSID;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int type;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ return -EOPNOTSUPP;
+
+ switch (*mode) {
+ case IW_MODE_INFRA:
+ type = IEEE80211_IF_TYPE_STA;
+ break;
+ case IW_MODE_ADHOC:
+ type = IEEE80211_IF_TYPE_IBSS;
+ break;
+ case IW_MODE_REPEAT:
+ type = IEEE80211_IF_TYPE_WDS;
+ break;
+ case IW_MODE_MONITOR:
+ type = IEEE80211_IF_TYPE_MNTR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (type == sdata->vif.type)
+ return 0;
+ if (netif_running(dev))
+ return -EBUSY;
+
+ ieee80211_if_reinit(dev);
+ ieee80211_if_set_type(dev, type);
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_AP:
+ *mode = IW_MODE_MASTER;
+ break;
+ case IEEE80211_IF_TYPE_STA:
+ *mode = IW_MODE_INFRA;
+ break;
+ case IEEE80211_IF_TYPE_IBSS:
+ *mode = IW_MODE_ADHOC;
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ *mode = IW_MODE_MONITOR;
+ break;
+ case IEEE80211_IF_TYPE_WDS:
+ *mode = IW_MODE_REPEAT;
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ *mode = IW_MODE_SECOND; /* FIXME */
+ break;
+ default:
+ *mode = IW_MODE_AUTO;
+ break;
+ }
+ return 0;
+}
+
+int ieee80211_set_freq(struct net_device *dev, int freqMHz)
+{
+ int ret = -EINVAL;
+ struct ieee80211_channel *chan;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
+
+ if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ chan->flags & IEEE80211_CHAN_NO_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+ "%d MHz\n", dev->name, chan->center_freq);
+ return ret;
+ }
+ local->oper_channel = chan;
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ ret = 0;
+ else
+ ret = ieee80211_hw_config(local);
+
+ rate_control_clear(local);
+ }
+
+ return ret;
+}
+
+static int ieee80211_ioctl_siwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
+
+ /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
+ if (freq->e == 0) {
+ if (freq->m < 0) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
+ sdata->u.sta.flags |=
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+ return 0;
+ } else
+ return ieee80211_set_freq(dev,
+ ieee80211_channel_to_frequency(freq->m));
+ } else {
+ int i, div = 1000000;
+ for (i = 0; i < freq->e; i++)
+ div /= 10;
+ if (div > 0)
+ return ieee80211_set_freq(dev, freq->m / div);
+ else
+ return -EINVAL;
+ }
+}
+
+
+static int ieee80211_ioctl_giwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ freq->m = local->hw.conf.channel->center_freq;
+ freq->e = 6;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ struct ieee80211_sub_if_data *sdata;
+ size_t len = data->length;
+
+ /* iwconfig uses nul termination in SSID.. */
+ if (len > 0 && ssid[len - 1] == '\0')
+ len--;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret;
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
+ if (len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+ memcpy(sdata->u.sta.ssid, ssid, len);
+ sdata->u.sta.ssid_len = len;
+ return 0;
+ }
+ if (data->flags)
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
+ else
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
+ ret = ieee80211_sta_set_ssid(dev, ssid, len);
+ if (ret)
+ return ret;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ memcpy(sdata->u.ap.ssid, ssid, len);
+ memset(sdata->u.ap.ssid + len, 0,
+ IEEE80211_MAX_SSID_LEN - len);
+ sdata->u.ap.ssid_len = len;
+ return ieee80211_if_config(dev);
+ }
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ size_t len;
+
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int res = ieee80211_sta_get_ssid(dev, ssid, &len);
+ if (res == 0) {
+ data->length = len;
+ data->flags = 1;
+ } else
+ data->flags = 0;
+ return res;
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ len = sdata->u.ap.ssid_len;
+ if (len > IW_ESSID_MAX_SIZE)
+ len = IW_ESSID_MAX_SIZE;
+ memcpy(ssid, sdata->u.ap.ssid, len);
+ data->length = len;
+ data->flags = 1;
+ return 0;
+ }
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret;
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
+ memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN);
+ return 0;
+ }
+ if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+ else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
+ else
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
+ ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
+ if (ret)
+ return ret;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ /*
+ * If it is necessary to update the WDS peer address
+ * while the interface is running, then we need to do
+ * more work here, namely if it is running we need to
+ * add a new and remove the old STA entry, this is
+ * normally handled by _open() and _stop().
+ */
+ if (netif_running(dev))
+ return -EBUSY;
+
+ memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN);
+
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ if (sdata->u.sta.state == IEEE80211_ASSOCIATED ||
+ sdata->u.sta.state == IEEE80211_IBSS_JOINED) {
+ ap_addr->sa_family = ARPHRD_ETHER;
+ memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ return 0;
+ } else {
+ memset(&ap_addr->sa_data, 0, ETH_ALEN);
+ return 0;
+ }
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ ap_addr->sa_family = ARPHRD_ETHER;
+ memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct iw_scan_req *req = NULL;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
+ sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EOPNOTSUPP;
+
+ /* if SSID was specified explicitly then use that */
+ if (wrqu->data.length == sizeof(struct iw_scan_req) &&
+ wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+ req = (struct iw_scan_req *)extra;
+ ssid = req->essid;
+ ssid_len = req->essid_len;
+ }
+
+ return ieee80211_sta_req_scan(dev, ssid, ssid_len);
+}
+
+
+static int ieee80211_ioctl_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ int res;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return -EAGAIN;
+
+ res = ieee80211_sta_scan_results(dev, extra, data->length);
+ if (res >= 0) {
+ data->length = res;
+ return 0;
+ }
+ data->length = 0;
+ return res;
+}
+
+
+static int ieee80211_ioctl_siwrate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rate, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int i, err = -EINVAL;
+ u32 target_rate = rate->value / 100000;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (!sdata->bss)
+ return -ENODEV;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
+ * target_rate = X, rate->fixed = 1 means only rate X
+ * target_rate = X, rate->fixed = 0 means all rates <= X */
+ sdata->bss->max_ratectrl_rateidx = -1;
+ sdata->bss->force_unicast_rateidx = -1;
+ if (rate->value < 0)
+ return 0;
+
+ for (i=0; i< sband->n_bitrates; i++) {
+ struct ieee80211_rate *brate = &sband->bitrates[i];
+ int this_rate = brate->bitrate;
+
+ if (target_rate == this_rate) {
+ sdata->bss->max_ratectrl_rateidx = i;
+ if (rate->fixed)
+ sdata->bss->force_unicast_rateidx = i;
+ err = 0;
+ break;
+ }
+ }
+ return err;
+}
+
+static int ieee80211_ioctl_giwrate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rate, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return -EOPNOTSUPP;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, sdata->u.sta.bssid);
+
+ if (sta && sta->txrate_idx < sband->n_bitrates)
+ rate->value = sband->bitrates[sta->txrate_idx].bitrate;
+ else
+ rate->value = 0;
+
+ rcu_read_unlock();
+
+ if (!sta)
+ return -ENODEV;
+
+ rate->value *= 100000;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ bool need_reconfig = 0;
+ int new_power_level;
+
+ if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
+ return -EINVAL;
+ if (data->txpower.flags & IW_TXPOW_RANGE)
+ return -EINVAL;
+
+ if (data->txpower.fixed) {
+ new_power_level = data->txpower.value;
+ } else {
+ /*
+ * Automatic power level. Use maximum power for the current
+ * channel. Should be part of rate control.
+ */
+ struct ieee80211_channel* chan = local->hw.conf.channel;
+ if (!chan)
+ return -EINVAL;
+
+ new_power_level = chan->max_power;
+ }
+
+ if (local->hw.conf.power_level != new_power_level) {
+ local->hw.conf.power_level = new_power_level;
+ need_reconfig = 1;
+ }
+
+ if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
+ local->hw.conf.radio_enabled = !(data->txpower.disabled);
+ need_reconfig = 1;
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
+ }
+
+ if (need_reconfig) {
+ ieee80211_hw_config(local);
+ /* The return value of hw_config is not of big interest here,
+ * as it doesn't say that it failed because of _this_ config
+ * change or something else. Ignore it. */
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ data->txpower.fixed = 1;
+ data->txpower.disabled = !(local->hw.conf.radio_enabled);
+ data->txpower.value = local->hw.conf.power_level;
+ data->txpower.flags = IW_TXPOW_DBM;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (rts->disabled)
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
+ return -EINVAL;
+ else
+ local->rts_threshold = rts->value;
+
+ /* If the wlan card performs RTS/CTS in hardware/firmware,
+ * configure it here */
+
+ if (local->ops->set_rts_threshold)
+ local->ops->set_rts_threshold(local_to_hw(local),
+ local->rts_threshold);
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ rts->value = local->rts_threshold;
+ rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ rts->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (frag->disabled)
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ else if (frag->value < 256 ||
+ frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
+ return -EINVAL;
+ else {
+ /* Fragment length must be even, so strip LSB. */
+ local->fragmentation_threshold = frag->value & ~0x1;
+ }
+
+ /* If the wlan card performs fragmentation in hardware/firmware,
+ * configure it here */
+
+ if (local->ops->set_frag_threshold)
+ local->ops->set_frag_threshold(
+ local_to_hw(local),
+ local->fragmentation_threshold);
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ frag->value = local->fragmentation_threshold;
+ frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ frag->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (retry->disabled ||
+ (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
+ return -EINVAL;
+
+ if (retry->flags & IW_RETRY_MAX)
+ local->long_retry_limit = retry->value;
+ else if (retry->flags & IW_RETRY_MIN)
+ local->short_retry_limit = retry->value;
+ else {
+ local->long_retry_limit = retry->value;
+ local->short_retry_limit = retry->value;
+ }
+
+ if (local->ops->set_retry_limit) {
+ return local->ops->set_retry_limit(
+ local_to_hw(local),
+ local->short_retry_limit,
+ local->long_retry_limit);
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ retry->disabled = 0;
+ if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
+ /* first return min value, iwconfig will ask max value
+ * later if needed */
+ retry->flags |= IW_RETRY_LIMIT;
+ retry->value = local->short_retry_limit;
+ if (local->long_retry_limit != local->short_retry_limit)
+ retry->flags |= IW_RETRY_MIN;
+ return 0;
+ }
+ if (retry->flags & IW_RETRY_MAX) {
+ retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ retry->value = local->long_retry_limit;
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwmlme(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct iw_mlme *mlme = (struct iw_mlme *) extra;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ return -EINVAL;
+
+ switch (mlme->cmd) {
+ case IW_MLME_DEAUTH:
+ /* TODO: mlme->addr.sa_data */
+ return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
+ case IW_MLME_DISASSOC:
+ /* TODO: mlme->addr.sa_data */
+ return ieee80211_sta_disassociate(dev, mlme->reason_code);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+
+static int ieee80211_ioctl_siwencode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *keybuf)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int idx, i, alg = ALG_WEP;
+ u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+ int remove = 0;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx == 0) {
+ if (sdata->default_key)
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ } else if (idx < 1 || idx > 4)
+ return -EINVAL;
+ else
+ idx--;
+
+ if (erq->flags & IW_ENCODE_DISABLED)
+ remove = 1;
+ else if (erq->length == 0) {
+ /* No key data - just set the default TX key index */
+ ieee80211_set_default_key(sdata, idx);
+ return 0;
+ }
+
+ return ieee80211_set_encryption(
+ dev, bcaddr,
+ idx, alg, remove,
+ !sdata->default_key,
+ keybuf, erq->length);
+}
+
+
+static int ieee80211_ioctl_giwencode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *key)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int idx, i;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx < 1 || idx > 4) {
+ idx = -1;
+ if (!sdata->default_key)
+ idx = 0;
+ else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ if (idx < 0)
+ return -EINVAL;
+ } else
+ idx--;
+
+ erq->flags = idx + 1;
+
+ if (!sdata->keys[idx]) {
+ erq->length = 0;
+ erq->flags |= IW_ENCODE_DISABLED;
+ return 0;
+ }
+
+ memcpy(key, sdata->keys[idx]->conf.key,
+ min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
+ erq->length = sdata->keys[idx]->conf.keylen;
+ erq->flags |= IW_ENCODE_ENABLED;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwauth(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int ret = 0;
+
+ switch (data->flags & IW_AUTH_INDEX) {
+ case IW_AUTH_WPA_VERSION:
+ case IW_AUTH_CIPHER_PAIRWISE:
+ case IW_AUTH_CIPHER_GROUP:
+ case IW_AUTH_WPA_ENABLED:
+ case IW_AUTH_RX_UNENCRYPTED_EAPOL:
+ case IW_AUTH_KEY_MGMT:
+ break;
+ case IW_AUTH_DROP_UNENCRYPTED:
+ sdata->drop_unencrypted = !!data->value;
+ break;
+ case IW_AUTH_PRIVACY_INVOKED:
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ ret = -EINVAL;
+ else {
+ sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
+ /*
+ * Privacy invoked by wpa_supplicant, store the
+ * value and allow associating to a protected
+ * network without having a key up front.
+ */
+ if (data->value)
+ sdata->u.sta.flags |=
+ IEEE80211_STA_PRIVACY_INVOKED;
+ }
+ break;
+ case IW_AUTH_80211_AUTH_ALG:
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ sdata->u.sta.auth_algs = data->value;
+ else
+ ret = -EOPNOTSUPP;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ return ret;
+}
+
+/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
+static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_statistics *wstats = &local->wstats;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta = NULL;
+
+ rcu_read_lock();
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ sta = sta_info_get(local, sdata->u.sta.bssid);
+ if (!sta) {
+ wstats->discard.fragment = 0;
+ wstats->discard.misc = 0;
+ wstats->qual.qual = 0;
+ wstats->qual.level = 0;
+ wstats->qual.noise = 0;
+ wstats->qual.updated = IW_QUAL_ALL_INVALID;
+ } else {
+ wstats->qual.level = sta->last_rssi;
+ wstats->qual.qual = sta->last_signal;
+ wstats->qual.noise = sta->last_noise;
+ wstats->qual.updated = local->wstats_flags;
+ }
+
+ rcu_read_unlock();
+
+ return wstats;
+}
+
+static int ieee80211_ioctl_giwauth(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int ret = 0;
+
+ switch (data->flags & IW_AUTH_INDEX) {
+ case IW_AUTH_80211_AUTH_ALG:
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ data->value = sdata->u.sta.auth_algs;
+ else
+ ret = -EOPNOTSUPP;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ return ret;
+}
+
+
+static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
+ int uninitialized_var(alg), idx, i, remove = 0;
+
+ switch (ext->alg) {
+ case IW_ENCODE_ALG_NONE:
+ remove = 1;
+ break;
+ case IW_ENCODE_ALG_WEP:
+ alg = ALG_WEP;
+ break;
+ case IW_ENCODE_ALG_TKIP:
+ alg = ALG_TKIP;
+ break;
+ case IW_ENCODE_ALG_CCMP:
+ alg = ALG_CCMP;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (erq->flags & IW_ENCODE_DISABLED)
+ remove = 1;
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx < 1 || idx > 4) {
+ idx = -1;
+ if (!sdata->default_key)
+ idx = 0;
+ else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ if (idx < 0)
+ return -EINVAL;
+ } else
+ idx--;
+
+ return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
+ remove,
+ ext->ext_flags &
+ IW_ENCODE_EXT_SET_TX_KEY,
+ ext->key, ext->key_len);
+}
+
+
+/* Structures to export the Wireless Handlers */
+
+static const iw_handler ieee80211_handler[] =
+{
+ (iw_handler) NULL, /* SIOCSIWCOMMIT */
+ (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
+ (iw_handler) NULL, /* SIOCSIWNWID */
+ (iw_handler) NULL, /* SIOCGIWNWID */
+ (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
+ (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
+ (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
+ (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
+ (iw_handler) NULL, /* SIOCSIWSENS */
+ (iw_handler) NULL, /* SIOCGIWSENS */
+ (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
+ (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
+ (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
+ (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
+ (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
+ (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
+ (iw_handler) NULL, /* SIOCSIWSPY */
+ (iw_handler) NULL, /* SIOCGIWSPY */
+ (iw_handler) NULL, /* SIOCSIWTHRSPY */
+ (iw_handler) NULL, /* SIOCGIWTHRSPY */
+ (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
+ (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
+ (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
+ (iw_handler) NULL, /* SIOCGIWAPLIST */
+ (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
+ (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
+ (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
+ (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
+ (iw_handler) NULL, /* SIOCSIWNICKN */
+ (iw_handler) NULL, /* SIOCGIWNICKN */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
+ (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
+ (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
+ (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
+ (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
+ (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
+ (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
+ (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
+ (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
+ (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
+ (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
+ (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
+ (iw_handler) NULL, /* SIOCSIWPOWER */
+ (iw_handler) NULL, /* SIOCGIWPOWER */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
+ (iw_handler) NULL, /* SIOCGIWGENIE */
+ (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
+ (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
+ (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
+ (iw_handler) NULL, /* SIOCGIWENCODEEXT */
+ (iw_handler) NULL, /* SIOCSIWPMKSA */
+ (iw_handler) NULL, /* -- hole -- */
+};
+
+const struct iw_handler_def ieee80211_iw_handler_def =
+{
+ .num_standard = ARRAY_SIZE(ieee80211_handler),
+ .standard = (iw_handler *) ieee80211_handler,
+ .get_wireless_stats = ieee80211_get_wireless_stats,
+};
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 6882d1f..a9be8aa 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -19,15 +19,19 @@
#include "wme.h"
/* maximum number of hardware queues we support. */
-#define TC_80211_MAX_QUEUES 8
+#define TC_80211_MAX_QUEUES 16
+
+const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
struct ieee80211_sched_data
{
+ unsigned long qdisc_pool[BITS_TO_LONGS(TC_80211_MAX_QUEUES)];
struct tcf_proto *filter_list;
struct Qdisc *queues[TC_80211_MAX_QUEUES];
struct sk_buff_head requeued[TC_80211_MAX_QUEUES];
};
+static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0};
/* given a data frame determine the 802.1p/1d tag to use */
static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
@@ -54,12 +58,12 @@ static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
return skb->priority - 256;
/* check there is a valid IP header present */
- offset = ieee80211_get_hdrlen_from_skb(skb) + 8 /* LLC + proto */;
- if (skb->protocol != __constant_htons(ETH_P_IP) ||
- skb->len < offset + sizeof(*ip))
+ offset = ieee80211_get_hdrlen_from_skb(skb);
+ if (skb->len < offset + sizeof(llc_ip_hdr) + sizeof(*ip) ||
+ memcmp(skb->data + offset, llc_ip_hdr, sizeof(llc_ip_hdr)))
return 0;
- ip = (struct iphdr *) (skb->data + offset);
+ ip = (struct iphdr *) (skb->data + offset + sizeof(llc_ip_hdr));
dscp = ip->tos & 0xfc;
if (dscp & 0x1c)
@@ -97,7 +101,6 @@ static inline int classify80211(struct sk_buff *skb, struct Qdisc *qd)
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
unsigned short fc = le16_to_cpu(hdr->frame_control);
int qos;
- const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
/* see if frame is data or non data frame */
if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) {
@@ -145,9 +148,26 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
unsigned short fc = le16_to_cpu(hdr->frame_control);
struct Qdisc *qdisc;
int err, queue;
+ struct sta_info *sta;
+ u8 tid;
if (pkt_data->flags & IEEE80211_TXPD_REQUEUE) {
- skb_queue_tail(&q->requeued[pkt_data->queue], skb);
+ queue = pkt_data->queue;
+ rcu_read_lock();
+ sta = sta_info_get(local, hdr->addr1);
+ tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
+ if (sta) {
+ int ampdu_queue = sta->tid_to_tx_q[tid];
+ if ((ampdu_queue < local->hw.queues) &&
+ test_bit(ampdu_queue, q->qdisc_pool)) {
+ queue = ampdu_queue;
+ pkt_data->flags |= IEEE80211_TXPD_AMPDU;
+ } else {
+ pkt_data->flags &= ~IEEE80211_TXPD_AMPDU;
+ }
+ }
+ rcu_read_unlock();
+ skb_queue_tail(&q->requeued[queue], skb);
qd->q.qlen++;
return 0;
}
@@ -158,14 +178,31 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
*/
if (WLAN_FC_IS_QOS_DATA(fc)) {
u8 *p = skb->data + ieee80211_get_hdrlen(fc) - 2;
- u8 qos_hdr = skb->priority & QOS_CONTROL_TAG1D_MASK;
+ u8 ack_policy = 0;
+ tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
if (local->wifi_wme_noack_test)
- qos_hdr |= QOS_CONTROL_ACK_POLICY_NOACK <<
+ ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK <<
QOS_CONTROL_ACK_POLICY_SHIFT;
/* qos header is 2 bytes, second reserved */
- *p = qos_hdr;
+ *p = ack_policy | tid;
p++;
*p = 0;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ int ampdu_queue = sta->tid_to_tx_q[tid];
+ if ((ampdu_queue < local->hw.queues) &&
+ test_bit(ampdu_queue, q->qdisc_pool)) {
+ queue = ampdu_queue;
+ pkt_data->flags |= IEEE80211_TXPD_AMPDU;
+ } else {
+ pkt_data->flags &= ~IEEE80211_TXPD_AMPDU;
+ }
+ }
+
+ rcu_read_unlock();
}
if (unlikely(queue >= local->hw.queues)) {
@@ -183,6 +220,7 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd)
kfree_skb(skb);
err = NET_XMIT_DROP;
} else {
+ tid = skb->priority & QOS_CONTROL_TAG1D_MASK;
pkt_data->queue = (unsigned int) queue;
qdisc = q->queues[queue];
err = qdisc->enqueue(skb, qdisc);
@@ -234,10 +272,11 @@ static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd)
/* check all the h/w queues in numeric/priority order */
for (queue = 0; queue < hw->queues; queue++) {
/* see if there is room in this hardware queue */
- if (test_bit(IEEE80211_LINK_STATE_XOFF,
- &local->state[queue]) ||
- test_bit(IEEE80211_LINK_STATE_PENDING,
- &local->state[queue]))
+ if ((test_bit(IEEE80211_LINK_STATE_XOFF,
+ &local->state[queue])) ||
+ (test_bit(IEEE80211_LINK_STATE_PENDING,
+ &local->state[queue])) ||
+ (!test_bit(queue, q->qdisc_pool)))
continue;
/* there is space - try and get a frame */
@@ -287,7 +326,6 @@ static void wme_qdiscop_destroy(struct Qdisc* qd)
#if 0 /* Not in RHEL5 */
tcf_destroy_chain(q->filter_list);
- q->filter_list = NULL;
#else
while ((tp = q->filter_list) != NULL) {
q->filter_list = tp->next;
@@ -311,9 +349,9 @@ static int wme_qdiscop_tune(struct Qdisc *qd, struct rtattr *opt)
/* check our options block is the right size */
/* copy any options to our local structure */
/* Ignore options block for now - always use static mapping
- struct tc_ieee80211_qopt *qopt = RTA_DATA(opt);
+ struct tc_ieee80211_qopt *qopt = nla_data(opt);
- if (opt->rta_len < RTA_LENGTH(sizeof(*qopt)))
+ if (opt->nla_len < nla_attr_size(sizeof(*qopt)))
return -EINVAL;
memcpy(q->tag2queue, qopt->tag2queue, sizeof(qopt->tag2queue));
*/
@@ -367,10 +405,15 @@ static int wme_qdiscop_init(struct Qdisc *qd, struct rtattr *opt)
#endif
if (!q->queues[i]) {
q->queues[i] = &noop_qdisc;
- printk(KERN_ERR "%s child qdisc %i creation failed", dev->name, i);
+ printk(KERN_ERR "%s child qdisc %i creation failed\n",
+ dev->name, i);
}
}
+ /* reserve all legacy QoS queues */
+ for (i = 0; i < min(IEEE80211_TX_QUEUE_DATA4, queues); i++)
+ set_bit(i, q->qdisc_pool);
+
return err;
}
@@ -381,10 +424,10 @@ static int wme_qdiscop_dump(struct Qdisc *qd, struct sk_buff *skb)
struct tc_ieee80211_qopt opt;
memcpy(&opt.tag2queue, q->tag2queue, TC_80211_MAX_TAG + 1);
- RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
+ NLA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
*/ return skb->len;
/*
-rtattr_failure:
+nla_put_failure:
skb_trim(skb, p - skb->data);*/
return -1;
}
@@ -559,7 +602,7 @@ static struct Qdisc_class_ops class_ops =
/* queueing discipline operations */
-static struct Qdisc_ops wme_qdisc_ops =
+static struct Qdisc_ops wme_qdisc_ops __read_mostly =
{
.next = NULL,
.cl_ops = &class_ops,
@@ -620,3 +663,80 @@ void ieee80211_wme_unregister(void)
{
unregister_qdisc(&wme_qdisc_ops);
}
+
+int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid)
+{
+ int i;
+ struct ieee80211_sched_data *q =
+ qdisc_priv(local->mdev->qdisc_sleeping);
+ DECLARE_MAC_BUF(mac);
+
+ /* prepare the filter and save it for the SW queue
+ * matching the recieved HW queue */
+
+ /* try to get a Qdisc from the pool */
+ for (i = IEEE80211_TX_QUEUE_BEACON; i < local->hw.queues; i++)
+ if (!test_and_set_bit(i, q->qdisc_pool)) {
+ ieee80211_stop_queue(local_to_hw(local), i);
+ sta->tid_to_tx_q[tid] = i;
+
+ /* IF there are already pending packets
+ * on this tid first we need to drain them
+ * on the previous queue
+ * since HT is strict in order */
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "allocated aggregation queue"
+ " %d tid %d addr %s pool=0x%lX\n",
+ i, tid, print_mac(mac, sta->addr),
+ q->qdisc_pool[0]);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ return 0;
+ }
+
+ return -EAGAIN;
+}
+
+/**
+ * the caller needs to hold local->mdev->queue_lock
+ */
+void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid,
+ u8 requeue)
+{
+ struct ieee80211_sched_data *q =
+ qdisc_priv(local->mdev->qdisc_sleeping);
+ int agg_queue = sta->tid_to_tx_q[tid];
+
+ /* return the qdisc to the pool */
+ clear_bit(agg_queue, q->qdisc_pool);
+ sta->tid_to_tx_q[tid] = local->hw.queues;
+
+ if (requeue)
+ ieee80211_requeue(local, agg_queue);
+ else
+ q->queues[agg_queue]->ops->reset(q->queues[agg_queue]);
+}
+
+void ieee80211_requeue(struct ieee80211_local *local, int queue)
+{
+ struct Qdisc *root_qd = local->mdev->qdisc_sleeping;
+ struct ieee80211_sched_data *q = qdisc_priv(root_qd);
+ struct Qdisc *qdisc = q->queues[queue];
+ struct sk_buff *skb = NULL;
+ u32 len;
+
+ if (!qdisc || !qdisc->dequeue)
+ return;
+
+ printk(KERN_DEBUG "requeue: qlen = %d\n", qdisc->q.qlen);
+ for (len = qdisc->q.qlen; len > 0; len--) {
+ skb = qdisc->dequeue(qdisc);
+ root_qd->q.qlen--;
+ /* packet will be classified again and */
+ /* skb->packet_data->queue will be overridden if needed */
+ if (skb)
+ wme_qdiscop_enqueue(skb, root_qd);
+ }
+}
diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h
index 76c713a..fcc6b05 100644
--- a/net/mac80211/wme.h
+++ b/net/mac80211/wme.h
@@ -24,6 +24,8 @@
#define QOS_CONTROL_TAG1D_MASK 0x07
+extern const int ieee802_1d_to_ac[8];
+
static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
{
return (fc & 0x8C) == 0x88;
@@ -32,7 +34,12 @@ static inline int WLAN_FC_IS_QOS_DATA(u16 fc)
#ifdef CONFIG_NET_SCHED
void ieee80211_install_qdisc(struct net_device *dev);
int ieee80211_qdisc_installed(struct net_device *dev);
-
+int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid);
+void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid,
+ u8 requeue);
+void ieee80211_requeue(struct ieee80211_local *local, int queue);
int ieee80211_wme_register(void);
void ieee80211_wme_unregister(void);
#else
@@ -43,7 +50,19 @@ static inline int ieee80211_qdisc_installed(struct net_device *dev)
{
return 0;
}
-
+static inline int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid)
+{
+ return -EAGAIN;
+}
+static inline void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
+ struct sta_info *sta, u16 tid,
+ u8 requeue)
+{
+}
+static inline void ieee80211_requeue(struct ieee80211_local *local, int queue)
+{
+}
static inline int ieee80211_wme_register(void)
{
return 0;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 20cec1c..45709ad 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -70,8 +70,8 @@ static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
}
-ieee80211_txrx_result
-ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
+ieee80211_tx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
{
u8 *data, *sa, *da, *key, *mic, qos_tid;
size_t data_len;
@@ -84,18 +84,18 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
if (!tx->key || tx->key->conf.alg != ALG_TKIP || skb->len < 24 ||
!WLAN_FC_DATA_PRESENT(fc))
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len))
- return TXRX_DROP;
+ return TX_DROP;
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
- !(tx->flags & IEEE80211_TXRXD_FRAGMENTED) &&
+ !(tx->flags & IEEE80211_TX_FRAGMENTED) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) &&
!wpa_test) {
/* hwaccel - with no need for preallocated room for Michael MIC
*/
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
if (skb_tailroom(skb) < MICHAEL_MIC_LEN) {
@@ -105,7 +105,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
GFP_ATOMIC))) {
printk(KERN_DEBUG "%s: failed to allocate more memory "
"for Michael MIC\n", tx->dev->name);
- return TXRX_DROP;
+ return TX_DROP;
}
}
@@ -119,12 +119,12 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
mic = skb_put(skb, MICHAEL_MIC_LEN);
michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-ieee80211_txrx_result
-ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
+ieee80211_rx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
{
u8 *data, *sa, *da, *key = NULL, qos_tid;
size_t data_len;
@@ -139,16 +139,16 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
/*
* No way to verify the MIC if the hardware stripped it
*/
- if (rx->u.rx.status->flag & RX_FLAG_MMIC_STRIPPED)
- return TXRX_CONTINUE;
+ if (rx->status->flag & RX_FLAG_MMIC_STRIPPED)
+ return RX_CONTINUE;
if (!rx->key || rx->key->conf.alg != ALG_TKIP ||
!(rx->fc & IEEE80211_FCTL_PROTECTED) || !WLAN_FC_DATA_PRESENT(fc))
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len)
|| data_len < MICHAEL_MIC_LEN)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
data_len -= MICHAEL_MIC_LEN;
@@ -161,29 +161,29 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
- if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return TXRX_DROP;
+ if (!(rx->flags & IEEE80211_RX_RA_MATCH))
+ return RX_DROP_UNUSABLE;
printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
"%s\n", rx->dev->name, print_mac(mac, sa));
mac80211_ev_michael_mic_failure(rx->dev, rx->key->conf.keyidx,
(void *) skb->data);
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
/* remove Michael MIC from payload */
skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
/* update IV in key information to be able to detect replays */
- rx->key->u.tkip.iv32_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv32;
- rx->key->u.tkip.iv16_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv16;
+ rx->key->u.tkip.iv32_rx[rx->queue] = rx->tkip_iv32;
+ rx->key->u.tkip.iv16_rx[rx->queue] = rx->tkip_iv16;
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
-static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
+static int tkip_encrypt_skb(struct ieee80211_tx_data *tx,
struct sk_buff *skb, int test)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@@ -228,7 +228,7 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
0x7f),
(u8) key->u.tkip.iv16);
- tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
+ tx->control->key_idx = tx->key->conf.hw_key_idx;
return 0;
}
@@ -242,49 +242,42 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
}
-ieee80211_txrx_result
-ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx)
+ieee80211_tx_result
+ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 fc;
struct sk_buff *skb = tx->skb;
int wpa_test = 0, test = 0;
- fc = le16_to_cpu(hdr->frame_control);
-
- if (!WLAN_FC_DATA_PRESENT(fc))
- return TXRX_CONTINUE;
-
- tx->u.tx.control->icv_len = TKIP_ICV_LEN;
- tx->u.tx.control->iv_len = TKIP_IV_LEN;
- ieee80211_tx_set_iswep(tx);
+ tx->control->icv_len = TKIP_ICV_LEN;
+ tx->control->iv_len = TKIP_IV_LEN;
+ ieee80211_tx_set_protected(tx);
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
!wpa_test) {
/* hwaccel - with no need for preallocated room for IV/ICV */
- tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
- return TXRX_CONTINUE;
+ tx->control->key_idx = tx->key->conf.hw_key_idx;
+ return TX_CONTINUE;
}
if (tkip_encrypt_skb(tx, skb, test) < 0)
- return TXRX_DROP;
+ return TX_DROP;
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ for (i = 0; i < tx->num_extra_frag; i++) {
+ if (tkip_encrypt_skb(tx, tx->extra_frag[i], test)
< 0)
- return TXRX_DROP;
+ return TX_DROP;
}
}
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-ieee80211_txrx_result
-ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
+ieee80211_rx_result
+ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
u16 fc;
@@ -297,19 +290,19 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
hdrlen = ieee80211_get_hdrlen(fc);
if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
if (!rx->sta || skb->len - hdrlen < 12)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
- if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED) {
- if (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) {
+ if (rx->status->flag & RX_FLAG_DECRYPTED) {
+ if (rx->status->flag & RX_FLAG_IV_STRIPPED) {
/*
* Hardware took care of all processing, including
* replay protection, and stripped the ICV/IV so
* we cannot do any checks here.
*/
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
/* let TKIP code verify IV, but skip decryption */
@@ -319,9 +312,9 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm,
key, skb->data + hdrlen,
skb->len - hdrlen, rx->sta->addr,
- hwaccel, rx->u.rx.queue,
- &rx->u.rx.tkip_iv32,
- &rx->u.rx.tkip_iv16);
+ hdr->addr1, hwaccel, rx->queue,
+ &rx->tkip_iv32,
+ &rx->tkip_iv16);
if (res != TKIP_DECRYPT_OK || wpa_test) {
#ifdef CONFIG_MAC80211_DEBUG
if (net_ratelimit())
@@ -329,7 +322,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
"frame from %s (res=%d)\n", rx->dev->name,
print_mac(mac, rx->sta->addr), res);
#endif /* CONFIG_MAC80211_DEBUG */
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
/* Trim ICV */
@@ -339,7 +332,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
skb_pull(skb, TKIP_IV_LEN);
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
@@ -436,7 +429,7 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
}
-static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
+static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx,
struct sk_buff *skb, int test)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@@ -485,7 +478,7 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
/* hwaccel - with preallocated room for CCMP header */
- tx->u.tx.control->key_idx = key->conf.hw_key_idx;
+ tx->control->key_idx = key->conf.hw_key_idx;
return 0;
}
@@ -498,49 +491,42 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
}
-ieee80211_txrx_result
-ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx)
+ieee80211_tx_result
+ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
- u16 fc;
struct sk_buff *skb = tx->skb;
int test = 0;
- fc = le16_to_cpu(hdr->frame_control);
-
- if (!WLAN_FC_DATA_PRESENT(fc))
- return TXRX_CONTINUE;
-
- tx->u.tx.control->icv_len = CCMP_MIC_LEN;
- tx->u.tx.control->iv_len = CCMP_HDR_LEN;
- ieee80211_tx_set_iswep(tx);
+ tx->control->icv_len = CCMP_MIC_LEN;
+ tx->control->iv_len = CCMP_HDR_LEN;
+ ieee80211_tx_set_protected(tx);
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
/* hwaccel - with no need for preallocated room for CCMP "
* header or MIC fields */
- tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
- return TXRX_CONTINUE;
+ tx->control->key_idx = tx->key->conf.hw_key_idx;
+ return TX_CONTINUE;
}
if (ccmp_encrypt_skb(tx, skb, test) < 0)
- return TXRX_DROP;
+ return TX_DROP;
- if (tx->u.tx.extra_frag) {
+ if (tx->extra_frag) {
int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ for (i = 0; i < tx->num_extra_frag; i++) {
+ if (ccmp_encrypt_skb(tx, tx->extra_frag[i], test)
< 0)
- return TXRX_DROP;
+ return TX_DROP;
}
}
- return TXRX_CONTINUE;
+ return TX_CONTINUE;
}
-ieee80211_txrx_result
-ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
+ieee80211_rx_result
+ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
u16 fc;
@@ -555,21 +541,21 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
hdrlen = ieee80211_get_hdrlen(fc);
if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
if (!rx->sta || data_len < 0)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
- if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
- (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED))
- return TXRX_CONTINUE;
+ if ((rx->status->flag & RX_FLAG_DECRYPTED) &&
+ (rx->status->flag & RX_FLAG_IV_STRIPPED))
+ return RX_CONTINUE;
(void) ccmp_hdr2pn(pn, skb->data + hdrlen);
- if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) {
+ if (memcmp(pn, key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN) <= 0) {
#ifdef CONFIG_MAC80211_DEBUG
- u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue];
+ u8 *ppn = key->u.ccmp.rx_pn[rx->queue];
printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from "
"%s (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN "
@@ -579,10 +565,10 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
ppn[0], ppn[1], ppn[2], ppn[3], ppn[4], ppn[5]);
#endif /* CONFIG_MAC80211_DEBUG */
key->u.ccmp.replays++;
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
- if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) {
+ if (!(rx->status->flag & RX_FLAG_DECRYPTED)) {
/* hardware didn't decrypt/verify MIC */
u8 *scratch, *b_0, *aad;
@@ -603,16 +589,16 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
"for RX frame from %s\n", rx->dev->name,
print_mac(mac, rx->sta->addr));
#endif /* CONFIG_MAC80211_DEBUG */
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
}
}
- memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN);
+ memcpy(key->u.ccmp.rx_pn[rx->queue], pn, CCMP_PN_LEN);
/* Remove CCMP header and MIC */
skb_trim(skb, skb->len - CCMP_MIC_LEN);
memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
skb_pull(skb, CCMP_HDR_LEN);
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
diff --git a/net/mac80211/wpa.h b/net/mac80211/wpa.h
index 49d80cf..d42d221 100644
--- a/net/mac80211/wpa.h
+++ b/net/mac80211/wpa.h
@@ -13,19 +13,19 @@
#include <linux/types.h>
#include "ieee80211_i.h"
-ieee80211_txrx_result
-ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx);
-ieee80211_txrx_result
-ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx);
+ieee80211_tx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx);
+ieee80211_rx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx);
-ieee80211_txrx_result
-ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx);
-ieee80211_txrx_result
-ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx);
+ieee80211_tx_result
+ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx);
+ieee80211_rx_result
+ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx);
-ieee80211_txrx_result
-ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx);
-ieee80211_txrx_result
-ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx);
+ieee80211_tx_result
+ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx);
+ieee80211_rx_result
+ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx);
#endif /* WPA_H */
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index 5664c2c..16320a1 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -1,4 +1,4 @@
obj-$(CONFIG_CFG80211) += cfg80211.o
-cfg80211-y += core.o sysfs.o radiotap.o
+cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o compat.o
cfg80211-$(CONFIG_NL80211) += nl80211.o
diff --git a/net/wireless/compat.c b/net/wireless/compat.c
new file mode 100644
index 0000000..b2834ad
--- /dev/null
+++ b/net/wireless/compat.c
@@ -0,0 +1,231 @@
+/*
+ * Copyright 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Compatibility file for Linux wireless for kernels 2.6.22 - tip
+ * The headers don't need to be modified as we're simply adding them.
+ */
+
+#include <linux/netpoll.h>
+
+#include <net/wireless_compat.h>
+
+/* Part of net/ethernet/eth.c as of 2.6.24 */
+char *print_mac(char *buf, const u8 *addr)
+{
+ sprintf(buf, MAC_FMT,
+ addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+ return buf;
+}
+EXPORT_SYMBOL(print_mac);
+
+/* On net/core/dev.c as of 2.6.24 */
+int __dev_addr_delete(struct dev_addr_list **list, int *count,
+ void *addr, int alen, int glbl)
+{
+ struct dev_addr_list *da;
+
+ for (; (da = *list) != NULL; list = &da->next) {
+ if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+ alen == da->da_addrlen) {
+ if (glbl) {
+ int old_glbl = da->da_gusers;
+ da->da_gusers = 0;
+ if (old_glbl == 0)
+ break;
+ }
+ if (--da->da_users)
+ return 0;
+
+ *list = da->next;
+ kfree(da);
+ (*count)--;
+ return 0;
+ }
+ }
+ return -ENOENT;
+}
+
+/* On net/core/dev.c as of 2.6.24. This is not yet used by mac80211 but
+ * might as well add it */
+int __dev_addr_add(struct dev_addr_list **list, int *count,
+ void *addr, int alen, int glbl)
+{
+ struct dev_addr_list *da;
+
+ for (da = *list; da != NULL; da = da->next) {
+ if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+ da->da_addrlen == alen) {
+ if (glbl) {
+ int old_glbl = da->da_gusers;
+ da->da_gusers = 1;
+ if (old_glbl)
+ return 0;
+ }
+ da->da_users++;
+ return 0;
+ }
+ }
+
+ da = kmalloc(sizeof(*da), GFP_ATOMIC);
+ if (da == NULL)
+ return -ENOMEM;
+ memcpy(da->da_addr, addr, alen);
+ da->da_addrlen = alen;
+ da->da_users = 1;
+ da->da_gusers = glbl ? 1 : 0;
+ da->next = *list;
+ *list = da;
+ (*count)++;
+ return 0;
+}
+
+/* Part of net/core/dev_mcast.c as of 2.6.23. This is a slightly different version.
+ * Since da->da_synced is not part of 2.6.22 we need to take longer route when
+ * syncing */
+
+/**
+ * dev_mc_sync - Synchronize device's multicast list to another device
+ * @to: destination device
+ * @from: source device
+ *
+ * Add newly added addresses to the destination device and release
+ * addresses that have no users left. The source device must be
+ * locked by netif_tx_lock_bh.
+ *
+ * This function is intended to be called from the dev->set_multicast_list
+ * function of layered software devices.
+ */
+int dev_mc_sync(struct net_device *to, struct net_device *from)
+{
+ struct dev_addr_list *da, *next, *da_to;
+ int err = 0;
+
+ netif_tx_lock_bh(to);
+ da = from->mc_list;
+ while (da != NULL) {
+ int synced = 0;
+ next = da->next;
+ da_to = to->mc_list;
+ /* 2.6.22 does not have da->da_synced so lets take the long route */
+ while (da_to != NULL) {
+ if (memcmp(da_to->da_addr, da->da_addr, da_to->da_addrlen) == 0 &&
+ da->da_addrlen == da_to->da_addrlen) {
+ synced = 1;
+ break;
+ }
+ da_to = da_to->next;
+ }
+ if (!synced) {
+ err = __dev_addr_add(&to->mc_list, &to->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ if (err < 0)
+ break;
+ da->da_users++;
+ } else if (da->da_users == 1) {
+ __dev_addr_delete(&to->mc_list, &to->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ __dev_addr_delete(&from->mc_list, &from->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ }
+ da = next;
+ }
+ if (!err)
+ __dev_set_rx_mode(to);
+ netif_tx_unlock_bh(to);
+
+ return err;
+}
+EXPORT_SYMBOL(dev_mc_sync);
+
+
+/* Part of net/core/dev_mcast.c as of 2.6.23. This is a slighty different version.
+ * Since da->da_synced is not part of 2.6.22 we need to take longer route when
+ * unsyncing */
+
+/**
+ * dev_mc_unsync - Remove synchronized addresses from the destination
+ * device
+ * @to: destination device
+ * @from: source device
+ *
+ * Remove all addresses that were added to the destination device by
+ * dev_mc_sync(). This function is intended to be called from the
+ * dev->stop function of layered software devices.
+ */
+void dev_mc_unsync(struct net_device *to, struct net_device *from)
+{
+ struct dev_addr_list *da, *next, *da_to;
+
+ netif_tx_lock_bh(from);
+ netif_tx_lock_bh(to);
+
+ da = from->mc_list;
+ while (da != NULL) {
+ bool synced = false;
+ next = da->next;
+ da_to = to->mc_list;
+ /* 2.6.22 does not have da->da_synced so lets take the long route */
+ while (da_to != NULL) {
+ if (memcmp(da_to->da_addr, da->da_addr, da_to->da_addrlen) == 0 &&
+ da->da_addrlen == da_to->da_addrlen) {
+ synced = true;
+ break;
+ }
+ da_to = da_to->next;
+ }
+ if (!synced) {
+ da = next;
+ continue;
+ }
+ __dev_addr_delete(&to->mc_list, &to->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ __dev_addr_delete(&from->mc_list, &from->mc_count,
+ da->da_addr, da->da_addrlen, 0);
+ da = next;
+ }
+ __dev_set_rx_mode(to);
+
+ netif_tx_unlock_bh(to);
+ netif_tx_unlock_bh(from);
+}
+EXPORT_SYMBOL(dev_mc_unsync);
+
+/* Added as of 2.6.23 on net/core/dev.c. Slightly modifed, no dev->set_rx_mode on
+ * 2.6.22 so ignore that. */
+
+/*
+ * Upload unicast and multicast address lists to device and
+ * configure RX filtering. When the device doesn't support unicast
+ * filtering it is put in promiscous mode while unicast addresses
+ * are present.
+ */
+void __dev_set_rx_mode(struct net_device *dev)
+{
+ /* dev_open will call this function so the list will stay sane. */
+ if (!(dev->flags&IFF_UP))
+ return;
+
+ if (!netif_device_present(dev))
+ return;
+
+/* This needs to be ported to 2.6.22 framework */
+#if 0
+ /* Unicast addresses changes may only happen under the rtnl,
+ * therefore calling __dev_set_promiscuity here is safe.
+ */
+ if (dev->uc_count > 0 && !dev->uc_promisc) {
+ __dev_set_promiscuity(dev, 1);
+ dev->uc_promisc = 1;
+ } else if (dev->uc_count == 0 && dev->uc_promisc) {
+ __dev_set_promiscuity(dev, -1);
+ dev->uc_promisc = 0;
+ }
+#endif
+
+ if (dev->set_multicast_list)
+ dev->set_multicast_list(dev);
+}
diff --git a/net/wireless/core.c b/net/wireless/core.c
index bdeddb1..0d8576c 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -239,6 +239,47 @@ int wiphy_register(struct wiphy *wiphy)
{
struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
int res;
+ enum ieee80211_band band;
+ struct ieee80211_supported_band *sband;
+ bool have_band = false;
+ int i;
+
+ /* sanity check supported bands/channels */
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ sband = wiphy->bands[band];
+ if (!sband)
+ continue;
+
+ sband->band = band;
+
+ if (!sband->n_channels || !sband->n_bitrates) {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < sband->n_channels; i++) {
+ sband->channels[i].orig_flags =
+ sband->channels[i].flags;
+ sband->channels[i].orig_mag =
+ sband->channels[i].max_antenna_gain;
+ sband->channels[i].orig_mpwr =
+ sband->channels[i].max_power;
+ sband->channels[i].band = band;
+ }
+
+ have_band = true;
+ }
+
+ if (!have_band) {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ /* check and set up bitrates */
+ ieee80211_set_bitrate_flags(wiphy);
+
+ /* set up regulatory info */
+ wiphy_update_regulatory(wiphy);
mutex_lock(&cfg80211_drv_mutex);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index eb0f846..7a02c35 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -78,4 +78,7 @@ extern void cfg80211_dev_free(struct cfg80211_registered_device *drv);
extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv,
char *newname);
+void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
+void wiphy_update_regulatory(struct wiphy *wiphy);
+
#endif /* __NET_WIRELESS_CORE_H */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0ae63a6..e8202a4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -65,6 +65,32 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
+
+ [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
+
+ [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
+ .len = WLAN_MAX_KEY_LEN },
+ [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
+ [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
+ [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
+
+ [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
+ [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
+ [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
+ .len = IEEE80211_MAX_DATA_LEN },
+ [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
+ .len = IEEE80211_MAX_DATA_LEN },
+ [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
+ [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
+ [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_RATES },
+ [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
+ [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
+ [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
+ .len = IEEE80211_MAX_MESH_ID_LEN },
+ [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
};
/* message building helper */
@@ -72,8 +98,12 @@ static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
int flags, u8 cmd)
{
/* since there is no private header just add the generic one */
+#if 0 /* Not in RHEL5 */
+ return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
+#else
return genlmsg_put(skb, pid, seq, nl80211_fam.id, nl80211_fam.hdrsize,
flags, cmd, nl80211_fam.version);
+#endif
}
/* netlink command implementations */
@@ -82,6 +112,13 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
struct cfg80211_registered_device *dev)
{
void *hdr;
+ struct nlattr *nl_bands, *nl_band;
+ struct nlattr *nl_freqs, *nl_freq;
+ struct nlattr *nl_rates, *nl_rate;
+ enum ieee80211_band band;
+ struct ieee80211_channel *chan;
+ struct ieee80211_rate *rate;
+ int i;
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
if (!hdr)
@@ -89,10 +126,79 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
+
+ nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
+ if (!nl_bands)
+ goto nla_put_failure;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ if (!dev->wiphy.bands[band])
+ continue;
+
+ nl_band = nla_nest_start(msg, band);
+ if (!nl_band)
+ goto nla_put_failure;
+
+ /* add frequencies */
+ nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
+ if (!nl_freqs)
+ goto nla_put_failure;
+
+ for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
+ nl_freq = nla_nest_start(msg, i);
+ if (!nl_freq)
+ goto nla_put_failure;
+
+ chan = &dev->wiphy.bands[band]->channels[i];
+ NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
+ chan->center_freq);
+
+ if (chan->flags & IEEE80211_CHAN_DISABLED)
+ NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED, 0);
+ if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN, 0);
+ if (chan->flags & IEEE80211_CHAN_NO_IBSS)
+ NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS, 0);
+ if (chan->flags & IEEE80211_CHAN_RADAR)
+ NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR, 0);
+
+ nla_nest_end(msg, nl_freq);
+ }
+
+ nla_nest_end(msg, nl_freqs);
+
+ /* add bitrates */
+ nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
+ if (!nl_rates)
+ goto nla_put_failure;
+
+ for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
+ nl_rate = nla_nest_start(msg, i);
+ if (!nl_rate)
+ goto nla_put_failure;
+
+ rate = &dev->wiphy.bands[band]->bitrates[i];
+ NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
+ rate->bitrate);
+ if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ NLA_PUT_FLAG(msg,
+ NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE,
+0);
+
+ nla_nest_end(msg, nl_rate);
+ }
+
+ nla_nest_end(msg, nl_rates);
+
+ nla_nest_end(msg, nl_band);
+ }
+ nla_nest_end(msg, nl_bands);
+
return genlmsg_end(msg, hdr);
nla_put_failure:
- return genlmsg_cancel(msg, hdr);
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
}
static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
@@ -180,7 +286,8 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
return genlmsg_end(msg, hdr);
nla_put_failure:
- return genlmsg_cancel(msg, hdr);
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
}
static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
@@ -248,12 +355,45 @@ static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
return -ENOBUFS;
}
+static struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
+ [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
+ [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
+ [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
+ [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
+ [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
+};
+
+static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
+{
+ struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
+ int flag;
+
+ *mntrflags = 0;
+
+ if (!nla)
+ return -EINVAL;
+
+ if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
+ nla, mntr_flags_policy))
+ return -EINVAL;
+
+ for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
+ if (flags[flag])
+ *mntrflags |= (1<<flag);
+
+ return 0;
+}
+
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *drv;
+ struct vif_params params;
int err, ifindex;
enum nl80211_iftype type;
struct net_device *dev;
+ u32 flags;
+
+ memset(¶ms, 0, sizeof(params));
if (info->attrs[NL80211_ATTR_IFTYPE]) {
type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
@@ -273,8 +413,18 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
goto unlock;
}
+ if (type == NL80211_IFTYPE_MESH_POINT &&
+ info->attrs[NL80211_ATTR_MESH_ID]) {
+ params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
+ params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+ }
+
rtnl_lock();
- err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, type);
+ err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
+ info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
+ &flags);
+ err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
+ type, err ? NULL : &flags, ¶ms);
rtnl_unlock();
unlock:
@@ -285,8 +435,12 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *drv;
+ struct vif_params params;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
+ u32 flags;
+
+ memset(¶ms, 0, sizeof(params));
if (!info->attrs[NL80211_ATTR_IFNAME])
return -EINVAL;
@@ -306,11 +460,22 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
goto unlock;
}
+ if (type == NL80211_IFTYPE_MESH_POINT &&
+ info->attrs[NL80211_ATTR_MESH_ID]) {
+ params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
+ params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+ }
+
rtnl_lock();
+ err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
+ info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
+ &flags);
err = drv->ops->add_virtual_intf(&drv->wiphy,
- nla_data(info->attrs[NL80211_ATTR_IFNAME]), type);
+ nla_data(info->attrs[NL80211_ATTR_IFNAME]),
+ type, err ? NULL : &flags, ¶ms);
rtnl_unlock();
+
unlock:
cfg80211_put_dev(drv);
return err;
@@ -342,6 +507,1007 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
return err;
}
+struct get_key_cookie {
+ struct sk_buff *msg;
+ int error;
+};
+
+static void get_key_callback(void *c, struct key_params *params)
+{
+ struct get_key_cookie *cookie = c;
+
+ if (params->key)
+ NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
+ params->key_len, params->key);
+
+ if (params->seq)
+ NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
+ params->seq_len, params->seq);
+
+ if (params->cipher)
+ NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
+ params->cipher);
+
+ return;
+ nla_put_failure:
+ cookie->error = 1;
+}
+
+static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 key_idx = 0;
+ u8 *mac_addr = NULL;
+ struct get_key_cookie cookie = {
+ .error = 0,
+ };
+ void *hdr;
+ struct sk_buff *msg;
+
+ if (info->attrs[NL80211_ATTR_KEY_IDX])
+ key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+ if (key_idx > 3)
+ return -EINVAL;
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->get_key) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
+ NL80211_CMD_NEW_KEY);
+
+ if (IS_ERR(hdr)) {
+ err = PTR_ERR(hdr);
+ goto out;
+ }
+
+ cookie.msg = msg;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
+ if (mac_addr)
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
+
+ rtnl_lock();
+ err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
+ &cookie, get_key_callback);
+ rtnl_unlock();
+
+ if (err)
+ goto out;
+
+ if (cookie.error)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ err = genlmsg_unicast(msg, info->snd_pid);
+ goto out;
+
+ nla_put_failure:
+ err = -ENOBUFS;
+ nlmsg_free(msg);
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 key_idx;
+
+ if (!info->attrs[NL80211_ATTR_KEY_IDX])
+ return -EINVAL;
+
+ key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+ if (key_idx > 3)
+ return -EINVAL;
+
+ /* currently only support setting default key */
+ if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
+ return -EINVAL;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->set_default_key) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct key_params params;
+ u8 key_idx = 0;
+ u8 *mac_addr = NULL;
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
+ return -EINVAL;
+
+ if (info->attrs[NL80211_ATTR_KEY_DATA]) {
+ params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
+ params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
+ }
+
+ if (info->attrs[NL80211_ATTR_KEY_IDX])
+ key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+ params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ if (key_idx > 3)
+ return -EINVAL;
+
+ /*
+ * Disallow pairwise keys with non-zero index unless it's WEP
+ * (because current deployments use pairwise WEP keys with
+ * non-zero indizes but 802.11i clearly specifies to use zero)
+ */
+ if (mac_addr && key_idx &&
+ params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
+ params.cipher != WLAN_CIPHER_SUITE_WEP104)
+ return -EINVAL;
+
+ /* TODO: add definitions for the lengths to linux/ieee80211.h */
+ switch (params.cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ if (params.key_len != 5)
+ return -EINVAL;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ if (params.key_len != 32)
+ return -EINVAL;
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ if (params.key_len != 16)
+ return -EINVAL;
+ break;
+ case WLAN_CIPHER_SUITE_WEP104:
+ if (params.key_len != 13)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->add_key) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 key_idx = 0;
+ u8 *mac_addr = NULL;
+
+ if (info->attrs[NL80211_ATTR_KEY_IDX])
+ key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+ if (key_idx > 3)
+ return -EINVAL;
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->del_key) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
+{
+ int (*call)(struct wiphy *wiphy, struct net_device *dev,
+ struct beacon_parameters *info);
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct beacon_parameters params;
+ int haveinfo = 0;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ switch (info->genlhdr->cmd) {
+ case NL80211_CMD_NEW_BEACON:
+ /* these are required for NEW_BEACON */
+ if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
+ !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
+ !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ call = drv->ops->add_beacon;
+ break;
+ case NL80211_CMD_SET_BEACON:
+ call = drv->ops->set_beacon;
+ break;
+ default:
+ WARN_ON(1);
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (!call) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
+ params.interval =
+ nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
+ haveinfo = 1;
+ }
+
+ if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
+ params.dtim_period =
+ nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
+ haveinfo = 1;
+ }
+
+ if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
+ params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+ params.head_len =
+ nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+ haveinfo = 1;
+ }
+
+ if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
+ params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+ params.tail_len =
+ nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+ haveinfo = 1;
+ }
+
+ if (!haveinfo) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = call(&drv->wiphy, dev, ¶ms);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->del_beacon) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->del_beacon(&drv->wiphy, dev);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
+ [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
+ [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
+ [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
+};
+
+static int parse_station_flags(struct nlattr *nla, u32 *staflags)
+{
+ struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
+ int flag;
+
+ *staflags = 0;
+
+ if (!nla)
+ return 0;
+
+ if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
+ nla, sta_flags_policy))
+ return -EINVAL;
+
+ *staflags = STATION_FLAG_CHANGED;
+
+ for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
+ if (flags[flag])
+ *staflags |= (1<<flag);
+
+ return 0;
+}
+
+static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
+ int flags, struct net_device *dev,
+ u8 *mac_addr, struct station_info *sinfo)
+{
+ void *hdr;
+ struct nlattr *sinfoattr;
+
+ hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
+ if (!hdr)
+ return -1;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
+
+ sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
+ if (!sinfoattr)
+ goto nla_put_failure;
+ if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
+ NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
+ sinfo->inactive_time);
+ if (sinfo->filled & STATION_INFO_RX_BYTES)
+ NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
+ sinfo->rx_bytes);
+ if (sinfo->filled & STATION_INFO_TX_BYTES)
+ NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
+ sinfo->tx_bytes);
+ if (sinfo->filled & STATION_INFO_LLID)
+ NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
+ sinfo->llid);
+ if (sinfo->filled & STATION_INFO_PLID)
+ NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
+ sinfo->plid);
+ if (sinfo->filled & STATION_INFO_PLINK_STATE)
+ NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
+ sinfo->plink_state);
+
+ nla_nest_end(msg, sinfoattr);
+
+ return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int nl80211_dump_station(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ int wp_idx = 0;
+ int if_idx = 0;
+ int sta_idx = cb->args[2];
+ int wp_start = cb->args[0];
+ int if_start = cb->args[1];
+ struct station_info sinfo;
+ struct cfg80211_registered_device *dev;
+ struct wireless_dev *wdev;
+ u8 mac_addr[ETH_ALEN];
+ int err;
+ int exit = 0;
+
+ /* TODO: filter by device */
+ mutex_lock(&cfg80211_drv_mutex);
+ list_for_each_entry(dev, &cfg80211_drv_list, list) {
+ if (exit)
+ break;
+ if (++wp_idx < wp_start)
+ continue;
+ if_idx = 0;
+
+ mutex_lock(&dev->devlist_mtx);
+ list_for_each_entry(wdev, &dev->netdev_list, list) {
+ if (exit)
+ break;
+ if (++if_idx < if_start)
+ continue;
+ if (!dev->ops->dump_station)
+ continue;
+
+ for (;; ++sta_idx) {
+ rtnl_lock();
+ err = dev->ops->dump_station(&dev->wiphy,
+ wdev->netdev, sta_idx, mac_addr,
+ &sinfo);
+ rtnl_unlock();
+ if (err) {
+ sta_idx = 0;
+ break;
+ }
+ if (nl80211_send_station(skb,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ wdev->netdev, mac_addr,
+ &sinfo) < 0) {
+ exit = 1;
+ break;
+ }
+ }
+ }
+ mutex_unlock(&dev->devlist_mtx);
+ }
+ mutex_unlock(&cfg80211_drv_mutex);
+
+ cb->args[0] = wp_idx;
+ cb->args[1] = if_idx;
+ cb->args[2] = sta_idx;
+
+ return skb->len;
+}
+
+static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct station_info sinfo;
+ struct sk_buff *msg;
+ u8 *mac_addr = NULL;
+
+ memset(&sinfo, 0, sizeof(sinfo));
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->get_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
+ rtnl_unlock();
+
+ if (err)
+ goto out;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ goto out;
+
+ if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
+ dev, mac_addr, &sinfo) < 0)
+ goto out_free;
+
+ err = genlmsg_unicast(msg, info->snd_pid);
+ goto out;
+
+ out_free:
+ nlmsg_free(msg);
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+/*
+ * Get vlan interface making sure it is on the right wiphy.
+ */
+static int get_vlan(struct nlattr *vlanattr,
+ struct cfg80211_registered_device *rdev,
+ struct net_device **vlan)
+{
+ *vlan = NULL;
+
+ if (vlanattr) {
+#if 0 /* Not in RHEL5 */
+ *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
+#else
+ *vlan = dev_get_by_index(nla_get_u32(vlanattr));
+#endif
+ if (!*vlan)
+ return -ENODEV;
+ if (!(*vlan)->ieee80211_ptr)
+ return -EINVAL;
+ if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct station_parameters params;
+ u8 *mac_addr = NULL;
+
+ memset(¶ms, 0, sizeof(params));
+
+ params.listen_interval = -1;
+
+ if (info->attrs[NL80211_ATTR_STA_AID])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
+ params.supported_rates =
+ nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.supported_rates_len =
+ nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ }
+
+ if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+ params.listen_interval =
+ nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+
+ if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+ ¶ms.station_flags))
+ return -EINVAL;
+
+ if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
+ params.plink_action =
+ nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
+ if (err)
+ goto out;
+
+ if (!drv->ops->change_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms);
+ rtnl_unlock();
+
+ out:
+ if (params.vlan)
+ dev_put(params.vlan);
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct station_parameters params;
+ u8 *mac_addr = NULL;
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_AID])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
+ return -EINVAL;
+
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ params.supported_rates =
+ nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.supported_rates_len =
+ nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.listen_interval =
+ nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+ params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
+
+ if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+ ¶ms.station_flags))
+ return -EINVAL;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
+ if (err)
+ goto out;
+
+ if (!drv->ops->add_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms);
+ rtnl_unlock();
+
+ out:
+ if (params.vlan)
+ dev_put(params.vlan);
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 *mac_addr = NULL;
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->del_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
+ int flags, struct net_device *dev,
+ u8 *dst, u8 *next_hop,
+ struct mpath_info *pinfo)
+{
+ void *hdr;
+ struct nlattr *pinfoattr;
+
+ hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
+ if (!hdr)
+ return -1;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
+ NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
+
+ pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
+ if (!pinfoattr)
+ goto nla_put_failure;
+ if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
+ NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
+ pinfo->frame_qlen);
+ if (pinfo->filled & MPATH_INFO_DSN)
+ NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
+ pinfo->dsn);
+ if (pinfo->filled & MPATH_INFO_METRIC)
+ NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
+ pinfo->metric);
+ if (pinfo->filled & MPATH_INFO_EXPTIME)
+ NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
+ pinfo->exptime);
+ if (pinfo->filled & MPATH_INFO_FLAGS)
+ NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
+ pinfo->flags);
+ if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
+ NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
+ pinfo->discovery_timeout);
+ if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
+ NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
+ pinfo->discovery_retries);
+
+ nla_nest_end(msg, pinfoattr);
+
+ return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int nl80211_dump_mpath(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ int wp_idx = 0;
+ int if_idx = 0;
+ int sta_idx = cb->args[2];
+ int wp_start = cb->args[0];
+ int if_start = cb->args[1];
+ struct mpath_info pinfo;
+ struct cfg80211_registered_device *dev;
+ struct wireless_dev *wdev;
+ u8 dst[ETH_ALEN];
+ u8 next_hop[ETH_ALEN];
+ int err;
+ int exit = 0;
+
+ /* TODO: filter by device */
+ mutex_lock(&cfg80211_drv_mutex);
+ list_for_each_entry(dev, &cfg80211_drv_list, list) {
+ if (exit)
+ break;
+ if (++wp_idx < wp_start)
+ continue;
+ if_idx = 0;
+
+ mutex_lock(&dev->devlist_mtx);
+ list_for_each_entry(wdev, &dev->netdev_list, list) {
+ if (exit)
+ break;
+ if (++if_idx < if_start)
+ continue;
+ if (!dev->ops->dump_mpath)
+ continue;
+
+ for (;; ++sta_idx) {
+ rtnl_lock();
+ err = dev->ops->dump_mpath(&dev->wiphy,
+ wdev->netdev, sta_idx, dst,
+ next_hop, &pinfo);
+ rtnl_unlock();
+ if (err) {
+ sta_idx = 0;
+ break;
+ }
+ if (nl80211_send_mpath(skb,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ wdev->netdev, dst, next_hop,
+ &pinfo) < 0) {
+ exit = 1;
+ break;
+ }
+ }
+ }
+ mutex_unlock(&dev->devlist_mtx);
+ }
+ mutex_unlock(&cfg80211_drv_mutex);
+
+ cb->args[0] = wp_idx;
+ cb->args[1] = if_idx;
+ cb->args[2] = sta_idx;
+
+ return skb->len;
+}
+
+static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct mpath_info pinfo;
+ struct sk_buff *msg;
+ u8 *dst = NULL;
+ u8 next_hop[ETH_ALEN];
+
+ memset(&pinfo, 0, sizeof(pinfo));
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->get_mpath) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
+ rtnl_unlock();
+
+ if (err)
+ goto out;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ goto out;
+
+ if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
+ dev, dst, next_hop, &pinfo) < 0)
+ goto out_free;
+
+ err = genlmsg_unicast(msg, info->snd_pid);
+ goto out;
+
+ out_free:
+ nlmsg_free(msg);
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 *dst = NULL;
+ u8 *next_hop = NULL;
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->change_mpath) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 *dst = NULL;
+ u8 *next_hop = NULL;
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->add_mpath) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 *dst = NULL;
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->del_mpath) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -383,8 +1549,107 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
+ {
+ .cmd = NL80211_CMD_GET_KEY,
+ .doit = nl80211_get_key,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_KEY,
+ .doit = nl80211_set_key,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_NEW_KEY,
+ .doit = nl80211_new_key,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_KEY,
+ .doit = nl80211_del_key,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_BEACON,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .doit = nl80211_addset_beacon,
+ },
+ {
+ .cmd = NL80211_CMD_NEW_BEACON,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .doit = nl80211_addset_beacon,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_BEACON,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .doit = nl80211_del_beacon,
+ },
+ {
+ .cmd = NL80211_CMD_GET_STATION,
+ .doit = nl80211_get_station,
+ .dumpit = nl80211_dump_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_STATION,
+ .doit = nl80211_set_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_NEW_STATION,
+ .doit = nl80211_new_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_STATION,
+ .doit = nl80211_del_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_GET_MPATH,
+ .doit = nl80211_get_mpath,
+ .dumpit = nl80211_dump_mpath,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_MPATH,
+ .doit = nl80211_set_mpath,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_NEW_MPATH,
+ .doit = nl80211_new_mpath,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_MPATH,
+ .doit = nl80211_del_mpath,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
};
+#if 0 /* Not in RHEL5 */
+/* multicast groups */
+static struct genl_multicast_group nl80211_config_mcgrp = {
+ .name = "config",
+};
+#endif
+
/* notification functions */
void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
@@ -400,7 +1665,11 @@ void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
return;
}
+#if 0 /* Not in RHEL5 */
+ genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
+#else
genlmsg_multicast(msg, 0, NL80211_GROUP_CONFIG);
+#endif
}
/* initialisation/exit functions */
@@ -419,6 +1688,12 @@ int nl80211_init(void)
goto err_out;
}
+#if 0 /* Not in RHEL5 */
+ err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
+ if (err)
+ goto err_out;
+#endif
+
return 0;
err_out:
genl_unregister_family(&nl80211_fam);
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
new file mode 100644
index 0000000..855bff4
--- /dev/null
+++ b/net/wireless/reg.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * This regulatory domain control implementation is highly incomplete, it
+ * only exists for the purpose of not regressing mac80211.
+ *
+ * For now, drivers can restrict the set of allowed channels by either
+ * not registering those channels or setting the IEEE80211_CHAN_DISABLED
+ * flag; that flag will only be *set* by this code, never *cleared.
+ *
+ * The usual implementation is for a driver to read a device EEPROM to
+ * determine which regulatory domain it should be operating under, then
+ * looking up the allowable channels in a driver-local table and finally
+ * registering those channels in the wiphy structure.
+ *
+ * Alternatively, drivers that trust the regulatory domain control here
+ * will register a complete set of capabilities and the control code
+ * will restrict the set by setting the IEEE80211_CHAN_* flags.
+ */
+#include <linux/kernel.h>
+#include <net/wireless.h>
+#include "core.h"
+
+static char *ieee80211_regdom = "US";
+module_param(ieee80211_regdom, charp, 0444);
+MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
+
+struct ieee80211_channel_range {
+ short start_freq;
+ short end_freq;
+ int max_power;
+ int max_antenna_gain;
+ u32 flags;
+};
+
+struct ieee80211_regdomain {
+ const char *code;
+ const struct ieee80211_channel_range *ranges;
+ int n_ranges;
+};
+
+#define RANGE_PWR(_start, _end, _pwr, _ag, _flags) \
+ { _start, _end, _pwr, _ag, _flags }
+
+
+/*
+ * Ideally, in the future, these definitions will be loaded from a
+ * userspace table via some daemon.
+ */
+static const struct ieee80211_channel_range ieee80211_US_channels[] = {
+ /* IEEE 802.11b/g, channels 1..11 */
+ RANGE_PWR(2412, 2462, 27, 6, 0),
+ /* IEEE 802.11a, channel 36*/
+ RANGE_PWR(5180, 5180, 23, 6, 0),
+ /* IEEE 802.11a, channel 40*/
+ RANGE_PWR(5200, 5200, 23, 6, 0),
+ /* IEEE 802.11a, channel 44*/
+ RANGE_PWR(5220, 5220, 23, 6, 0),
+ /* IEEE 802.11a, channels 48..64 */
+ RANGE_PWR(5240, 5320, 23, 6, 0),
+ /* IEEE 802.11a, channels 149..165, outdoor */
+ RANGE_PWR(5745, 5825, 30, 6, 0),
+};
+
+static const struct ieee80211_channel_range ieee80211_JP_channels[] = {
+ /* IEEE 802.11b/g, channels 1..14 */
+ RANGE_PWR(2412, 2484, 20, 6, 0),
+ /* IEEE 802.11a, channels 34..48 */
+ RANGE_PWR(5170, 5240, 20, 6, IEEE80211_CHAN_PASSIVE_SCAN),
+ /* IEEE 802.11a, channels 52..64 */
+ RANGE_PWR(5260, 5320, 20, 6, IEEE80211_CHAN_NO_IBSS |
+ IEEE80211_CHAN_RADAR),
+};
+
+static const struct ieee80211_channel_range ieee80211_EU_channels[] = {
+ /* IEEE 802.11b/g, channels 1..13 */
+ RANGE_PWR(2412, 2472, 20, 6, 0),
+ /* IEEE 802.11a, channel 36*/
+ RANGE_PWR(5180, 5180, 23, 6, IEEE80211_CHAN_PASSIVE_SCAN),
+ /* IEEE 802.11a, channel 40*/
+ RANGE_PWR(5200, 5200, 23, 6, IEEE80211_CHAN_PASSIVE_SCAN),
+ /* IEEE 802.11a, channel 44*/
+ RANGE_PWR(5220, 5220, 23, 6, IEEE80211_CHAN_PASSIVE_SCAN),
+ /* IEEE 802.11a, channels 48..64 */
+ RANGE_PWR(5240, 5320, 23, 6, IEEE80211_CHAN_NO_IBSS |
+ IEEE80211_CHAN_RADAR),
+ /* IEEE 802.11a, channels 100..140 */
+ RANGE_PWR(5500, 5700, 30, 6, IEEE80211_CHAN_NO_IBSS |
+ IEEE80211_CHAN_RADAR),
+};
+
+#define REGDOM(_code) \
+ { \
+ .code = __stringify(_code), \
+ .ranges = ieee80211_ ##_code## _channels, \
+ .n_ranges = ARRAY_SIZE(ieee80211_ ##_code## _channels), \
+ }
+
+static const struct ieee80211_regdomain ieee80211_regdoms[] = {
+ REGDOM(US),
+ REGDOM(JP),
+ REGDOM(EU),
+};
+
+
+static const struct ieee80211_regdomain *get_regdom(void)
+{
+ static const struct ieee80211_channel_range
+ ieee80211_world_channels[] = {
+ /* IEEE 802.11b/g, channels 1..11 */
+ RANGE_PWR(2412, 2462, 27, 6, 0),
+ };
+ static const struct ieee80211_regdomain regdom_world = REGDOM(world);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ieee80211_regdoms); i++)
+ if (strcmp(ieee80211_regdom, ieee80211_regdoms[i].code) == 0)
+ return &ieee80211_regdoms[i];
+
+ return ®dom_world;
+}
+
+
+static void handle_channel(struct ieee80211_channel *chan,
+ const struct ieee80211_regdomain *rd)
+{
+ int i;
+ u32 flags = chan->orig_flags;
+ const struct ieee80211_channel_range *rg = NULL;
+
+ for (i = 0; i < rd->n_ranges; i++) {
+ if (rd->ranges[i].start_freq <= chan->center_freq &&
+ chan->center_freq <= rd->ranges[i].end_freq) {
+ rg = &rd->ranges[i];
+ break;
+ }
+ }
+
+ if (!rg) {
+ /* not found */
+ flags |= IEEE80211_CHAN_DISABLED;
+ chan->flags = flags;
+ return;
+ }
+
+ chan->flags = flags;
+ chan->max_antenna_gain = min(chan->orig_mag,
+ rg->max_antenna_gain);
+ if (chan->orig_mpwr)
+ chan->max_power = min(chan->orig_mpwr, rg->max_power);
+ else
+ chan->max_power = rg->max_power;
+}
+
+static void handle_band(struct ieee80211_supported_band *sband,
+ const struct ieee80211_regdomain *rd)
+{
+ int i;
+
+ for (i = 0; i < sband->n_channels; i++)
+ handle_channel(&sband->channels[i], rd);
+}
+
+void wiphy_update_regulatory(struct wiphy *wiphy)
+{
+ enum ieee80211_band band;
+ const struct ieee80211_regdomain *rd = get_regdom();
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ handle_band(wiphy->bands[band], rd);
+}
diff --git a/net/wireless/util.c b/net/wireless/util.c
new file mode 100644
index 0000000..f544246
--- /dev/null
+++ b/net/wireless/util.c
@@ -0,0 +1,121 @@
+/*
+ * Wireless utility functions
+ *
+ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ */
+#include <net/wireless.h>
+#include <asm/bitops.h>
+#include "core.h"
+
+int ieee80211_channel_to_frequency(int chan)
+{
+ if (chan < 14)
+ return 2407 + chan * 5;
+
+ if (chan == 14)
+ return 2484;
+
+ /* FIXME: 802.11j 17.3.8.3.2 */
+ return (chan + 1000) * 5;
+}
+EXPORT_SYMBOL(ieee80211_channel_to_frequency);
+
+int ieee80211_frequency_to_channel(int freq)
+{
+ if (freq == 2484)
+ return 14;
+
+ if (freq < 2484)
+ return (freq - 2407) / 5;
+
+ /* FIXME: 802.11j 17.3.8.3.2 */
+ return freq/5 - 1000;
+}
+EXPORT_SYMBOL(ieee80211_frequency_to_channel);
+
+struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
+ int freq)
+{
+ enum ieee80211_band band;
+ struct ieee80211_supported_band *sband;
+ int i;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ sband = wiphy->bands[band];
+
+ if (!sband)
+ continue;
+
+ for (i = 0; i < sband->n_channels; i++) {
+ if (sband->channels[i].center_freq == freq)
+ return &sband->channels[i];
+ }
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_channel);
+
+static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
+ enum ieee80211_band band)
+{
+ int i, want;
+
+ switch (band) {
+ case IEEE80211_BAND_5GHZ:
+ want = 3;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (sband->bitrates[i].bitrate == 60 ||
+ sband->bitrates[i].bitrate == 120 ||
+ sband->bitrates[i].bitrate == 240) {
+ sband->bitrates[i].flags |=
+ IEEE80211_RATE_MANDATORY_A;
+ want--;
+ }
+ }
+ WARN_ON(want);
+ break;
+ case IEEE80211_BAND_2GHZ:
+ want = 7;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (sband->bitrates[i].bitrate == 10) {
+ sband->bitrates[i].flags |=
+ IEEE80211_RATE_MANDATORY_B |
+ IEEE80211_RATE_MANDATORY_G;
+ want--;
+ }
+
+ if (sband->bitrates[i].bitrate == 20 ||
+ sband->bitrates[i].bitrate == 55 ||
+ sband->bitrates[i].bitrate == 110 ||
+ sband->bitrates[i].bitrate == 60 ||
+ sband->bitrates[i].bitrate == 120 ||
+ sband->bitrates[i].bitrate == 240) {
+ sband->bitrates[i].flags |=
+ IEEE80211_RATE_MANDATORY_G;
+ want--;
+ }
+
+ if (sband->bitrates[i].bitrate != 10 &&
+ sband->bitrates[i].bitrate != 20 &&
+ sband->bitrates[i].bitrate != 55 &&
+ sband->bitrates[i].bitrate != 110)
+ sband->bitrates[i].flags |=
+ IEEE80211_RATE_ERP_G;
+ }
+ WARN_ON(want != 0 && want != 3 && want != 6);
+ break;
+ case IEEE80211_NUM_BANDS:
+ WARN_ON(1);
+ break;
+ }
+}
+
+void ieee80211_set_bitrate_flags(struct wiphy *wiphy)
+{
+ enum ieee80211_band band;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ set_mandatory_flags_band(wiphy->bands[band], band);
+}
distrib
>
Scientific%20Linux
>
5x
>
i386
>
by-pkgid
>
351d529f9beeb4e5d936a6d5e3e7813a
>
files
>
2515
