blob: 984a03db355380d56fe559f0f494d90b433324ce [file] [log] [blame]
Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Devicescape Software, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef STA_INFO_H
10#define STA_INFO_H
11
12#include <linux/list.h>
13#include <linux/types.h>
14#include <linux/if_ether.h>
Johannes Bergaf818582009-11-06 11:35:50 +010015#include <linux/workqueue.h>
Bruno Randolf541a45a2010-12-02 19:12:43 +090016#include <linux/average.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040017#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070018
Johannes Berg238814f2008-01-28 17:19:37 +010019/**
20 * enum ieee80211_sta_info_flags - Stations flags
21 *
22 * These flags are used with &struct sta_info's @flags member.
23 *
24 * @WLAN_STA_AUTH: Station is authenticated.
25 * @WLAN_STA_ASSOC: Station is associated.
Johannes Bergaf818582009-11-06 11:35:50 +010026 * @WLAN_STA_PS_STA: Station is in power-save mode
Johannes Berg238814f2008-01-28 17:19:37 +010027 * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic.
28 * This bit is always checked so needs to be enabled for all stations
29 * when virtual port control is not in use.
30 * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
31 * frames.
32 * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP.
33 * @WLAN_STA_WME: Station is a QoS-STA.
34 * @WLAN_STA_WDS: Station is one of our WDS peers.
Johannes Bergd46e1442008-02-20 23:59:33 +010035 * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
Johannes Berge039fa42008-05-15 12:55:29 +020036 * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
Johannes Bergd46e1442008-02-20 23:59:33 +010037 * frame to this station is transmitted.
Jouni Malinen5394af42009-01-08 13:31:59 +020038 * @WLAN_STA_MFP: Management frame protection is used with this STA.
Johannes Berg618f3562010-04-06 11:18:46 +020039 * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
Johannes Berg098a6072010-04-06 11:18:47 +020040 * during suspend/resume and station removal.
Johannes Bergaf818582009-11-06 11:35:50 +010041 * @WLAN_STA_PS_DRIVER: driver requires keeping this station in
42 * power-save mode logically to flush frames that might still
43 * be in the queues
44 * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
45 * station in power-save mode, reply when the driver unblocks.
Johannes Berg238814f2008-01-28 17:19:37 +010046 */
47enum ieee80211_sta_info_flags {
48 WLAN_STA_AUTH = 1<<0,
49 WLAN_STA_ASSOC = 1<<1,
Johannes Bergaf818582009-11-06 11:35:50 +010050 WLAN_STA_PS_STA = 1<<2,
Johannes Berg836341a2008-02-20 02:07:21 +010051 WLAN_STA_AUTHORIZED = 1<<3,
52 WLAN_STA_SHORT_PREAMBLE = 1<<4,
53 WLAN_STA_ASSOC_AP = 1<<5,
54 WLAN_STA_WME = 1<<6,
55 WLAN_STA_WDS = 1<<7,
Johannes Bergd46e1442008-02-20 23:59:33 +010056 WLAN_STA_CLEAR_PS_FILT = 1<<9,
Jouni Malinen5394af42009-01-08 13:31:59 +020057 WLAN_STA_MFP = 1<<10,
Johannes Berg618f3562010-04-06 11:18:46 +020058 WLAN_STA_BLOCK_BA = 1<<11,
Johannes Bergaf818582009-11-06 11:35:50 +010059 WLAN_STA_PS_DRIVER = 1<<12,
60 WLAN_STA_PSPOLL = 1<<13,
Johannes Berg238814f2008-01-28 17:19:37 +010061};
Jiri Bencf0706e82007-05-05 11:45:53 -070062
Ron Rindjunsky5aae2882007-12-25 17:00:32 +020063#define STA_TID_NUM 16
64#define ADDBA_RESP_INTERVAL HZ
Johannes Berga622ab72010-06-10 10:21:39 +020065#define HT_AGG_MAX_RETRIES 0x3
Ron Rindjunsky5aae2882007-12-25 17:00:32 +020066
Johannes Berga622ab72010-06-10 10:21:39 +020067#define HT_AGG_STATE_DRV_READY 0
68#define HT_AGG_STATE_RESPONSE_RECEIVED 1
69#define HT_AGG_STATE_OPERATIONAL 2
70#define HT_AGG_STATE_STOPPING 3
Johannes Berg0ab33702010-06-10 10:21:42 +020071#define HT_AGG_STATE_WANT_START 4
72#define HT_AGG_STATE_WANT_STOP 5
Ron Rindjunsky80656c22008-01-28 14:07:16 +020073
74/**
75 * struct tid_ampdu_tx - TID aggregation information (Tx).
76 *
Johannes Berga622ab72010-06-10 10:21:39 +020077 * @rcu_head: rcu head for freeing structure
Ron Rindjunsky80656c22008-01-28 14:07:16 +020078 * @addba_resp_timer: timer for peer's response to addba request
Johannes Bergcd8ffc82009-03-23 17:28:41 +010079 * @pending: pending frames queue -- use sta's spinlock to protect
Ron Rindjunskycee24a32008-03-26 20:36:03 +020080 * @dialog_token: dialog token for aggregation session
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +053081 * @timeout: session timeout value to be filled in ADDBA requests
Johannes Berga622ab72010-06-10 10:21:39 +020082 * @state: session state (see above)
83 * @stop_initiator: initiator of a session stop
Johannes Berg53f73c02010-10-05 19:37:40 +020084 * @tx_stop: TX DelBA frame when stopping
Johannes Berg0b01f032011-01-18 13:51:05 +010085 * @buf_size: reorder buffer size at receiver
Johannes Berga622ab72010-06-10 10:21:39 +020086 *
Johannes Bergdd318572010-11-29 11:09:16 +010087 * This structure's lifetime is managed by RCU, assignments to
88 * the array holding it must hold the aggregation mutex.
89 *
90 * The TX path can access it under RCU lock-free if, and
91 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
92 * set. Otherwise, the TX path must also acquire the spinlock
93 * and re-check the state, see comments in the tx code
94 * touching it.
Ron Rindjunsky80656c22008-01-28 14:07:16 +020095 */
96struct tid_ampdu_tx {
Johannes Berga622ab72010-06-10 10:21:39 +020097 struct rcu_head rcu_head;
Ron Rindjunsky80656c22008-01-28 14:07:16 +020098 struct timer_list addba_resp_timer;
Johannes Bergcd8ffc82009-03-23 17:28:41 +010099 struct sk_buff_head pending;
Johannes Berga622ab72010-06-10 10:21:39 +0200100 unsigned long state;
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530101 u16 timeout;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200102 u8 dialog_token;
Johannes Berga622ab72010-06-10 10:21:39 +0200103 u8 stop_initiator;
Johannes Berg53f73c02010-10-05 19:37:40 +0200104 bool tx_stop;
Johannes Berg0b01f032011-01-18 13:51:05 +0100105 u8 buf_size;
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200106};
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200107
108/**
109 * struct tid_ampdu_rx - TID aggregation information (Rx).
110 *
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200111 * @reorder_buf: buffer to reorder incoming aggregated MPDUs
Jouni Malinen4d050f12009-05-05 20:35:14 +0300112 * @reorder_time: jiffies when skb was added
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200113 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200114 * @reorder_timer: releases expired frames from the reorder buffer.
Johannes Berg056cdd52008-03-26 23:21:47 +0100115 * @head_seq_num: head sequence number in reordering buffer.
116 * @stored_mpdu_num: number of MPDUs in reordering buffer
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200117 * @ssn: Starting Sequence Number expected to be aggregated.
118 * @buf_size: buffer size for incoming A-MPDUs
Johannes Berg20ad19d2009-02-10 21:25:45 +0100119 * @timeout: reset timer value (in TUs).
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200120 * @dialog_token: dialog token for aggregation session
Johannes Berga87f7362010-06-10 10:21:38 +0200121 * @rcu_head: RCU head used for freeing this struct
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200122 * @reorder_lock: serializes access to reorder buffer, see below.
Johannes Berga87f7362010-06-10 10:21:38 +0200123 *
Johannes Bergdd318572010-11-29 11:09:16 +0100124 * This structure's lifetime is managed by RCU, assignments to
125 * the array holding it must hold the aggregation mutex.
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200126 *
Johannes Bergdd318572010-11-29 11:09:16 +0100127 * The @reorder_lock is used to protect the members of this
128 * struct, except for @timeout, @buf_size and @dialog_token,
129 * which are constant across the lifetime of the struct (the
130 * dialog token being used only for debugging).
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200131 */
132struct tid_ampdu_rx {
Johannes Berga87f7362010-06-10 10:21:38 +0200133 struct rcu_head rcu_head;
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200134 spinlock_t reorder_lock;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200135 struct sk_buff **reorder_buf;
Jouni Malinen4d050f12009-05-05 20:35:14 +0300136 unsigned long *reorder_time;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200137 struct timer_list session_timer;
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200138 struct timer_list reorder_timer;
Johannes Berg056cdd52008-03-26 23:21:47 +0100139 u16 head_seq_num;
140 u16 stored_mpdu_num;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200141 u16 ssn;
142 u16 buf_size;
143 u16 timeout;
144 u8 dialog_token;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200145};
146
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800147/**
Johannes Bergfcea6002010-05-31 11:40:23 +0200148 * struct sta_ampdu_mlme - STA aggregation information.
149 *
Johannes Berga87f7362010-06-10 10:21:38 +0200150 * @tid_rx: aggregation info for Rx per TID -- RCU protected
Johannes Bergfcea6002010-05-31 11:40:23 +0200151 * @tid_tx: aggregation info for Tx per TID
152 * @addba_req_num: number of times addBA request has been sent.
153 * @dialog_token_allocator: dialog token enumerator for each new session;
Johannes Berg0ab33702010-06-10 10:21:42 +0200154 * @work: work struct for starting/stopping aggregation
Johannes Berg7c3b1dd2010-06-10 10:21:44 +0200155 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
156 * RX timer expired until the work for it runs
Johannes Berga93e3642010-06-10 10:21:46 +0200157 * @mtx: mutex to protect all TX data (except non-NULL assignments
158 * to tid_tx[idx], which are protected by the sta spinlock)
Johannes Bergfcea6002010-05-31 11:40:23 +0200159 */
160struct sta_ampdu_mlme {
Johannes Berga93e3642010-06-10 10:21:46 +0200161 struct mutex mtx;
Johannes Bergfcea6002010-05-31 11:40:23 +0200162 /* rx */
Johannes Bergfcea6002010-05-31 11:40:23 +0200163 struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
Johannes Berg7c3b1dd2010-06-10 10:21:44 +0200164 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)];
Johannes Bergfcea6002010-05-31 11:40:23 +0200165 /* tx */
Johannes Berg0ab33702010-06-10 10:21:42 +0200166 struct work_struct work;
Johannes Bergfcea6002010-05-31 11:40:23 +0200167 struct tid_ampdu_tx *tid_tx[STA_TID_NUM];
168 u8 addba_req_num[STA_TID_NUM];
169 u8 dialog_token_allocator;
170};
171
172
173/**
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800174 * enum plink_state - state of a mesh peer link finite state machine
175 *
176 * @PLINK_LISTEN: initial state, considered the implicit state of non existant
177 * mesh peer links
178 * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer
179 * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer
180 * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh
181 * peer
182 * @PLINK_ESTAB: mesh peer link is established
183 * @PLINK_HOLDING: mesh peer link is being closed or cancelled
184 * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded
185 */
Luis Carlos Coboee385852008-02-23 15:17:11 +0100186enum plink_state {
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800187 PLINK_LISTEN,
188 PLINK_OPN_SNT,
189 PLINK_OPN_RCVD,
190 PLINK_CNF_RCVD,
191 PLINK_ESTAB,
192 PLINK_HOLDING,
193 PLINK_BLOCKED
Luis Carlos Coboee385852008-02-23 15:17:11 +0100194};
Luis Carlos Coboee385852008-02-23 15:17:11 +0100195
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200196/**
Johannes Berg693b1bb2008-02-25 16:27:48 +0100197 * struct sta_info - STA information
198 *
199 * This structure collects information about a station that
200 * mac80211 is communicating with.
201 *
202 * @list: global linked list entry
203 * @hnext: hash table linked list pointer
204 * @local: pointer to the global information
Johannes Berge25cf4a2008-10-23 08:51:20 +0200205 * @sdata: virtual interface this station belongs to
Johannes Berge31b8212010-10-05 19:39:30 +0200206 * @ptk: peer key negotiated with this station, if any
207 * @gtk: group keys negotiated with this station, if any
Johannes Berge25cf4a2008-10-23 08:51:20 +0200208 * @rate_ctrl: rate control algorithm reference
209 * @rate_ctrl_priv: rate control private per-STA pointer
210 * @last_tx_rate: rate used for last transmit, to report to userspace as
211 * "the" transmit rate
Felix Fietkau3af63342011-02-27 22:08:01 +0100212 * @last_rx_rate_idx: rx status rate index of the last data packet
213 * @last_rx_rate_flag: rx status flag of the last data packet
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700214 * @lock: used for locking all fields that require locking, see comments
215 * in the header file.
216 * @flaglock: spinlock for flags accesses
Jaswinder Singh Rajput841507f2009-11-22 13:47:58 +0530217 * @drv_unblock_wk: used for driver PS unblocking
Johannes Berge25cf4a2008-10-23 08:51:20 +0200218 * @listen_interval: listen interval of this station, when we're acting as AP
Johannes Berg693b1bb2008-02-25 16:27:48 +0100219 * @flags: STA flags, see &enum ieee80211_sta_info_flags
220 * @ps_tx_buf: buffer of frames to transmit to this station
221 * when it leaves power saving state
222 * @tx_filtered: buffer of frames we already tried to transmit
223 * but were filtered by hardware due to STA having entered
224 * power saving state
225 * @rx_packets: Number of MSDUs received from this STA
226 * @rx_bytes: Number of bytes received from this STA
Johannes Berge25cf4a2008-10-23 08:51:20 +0200227 * @wep_weak_iv_count: number of weak WEP IVs received from this station
228 * @last_rx: time (in jiffies) when last frame was received from this STA
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530229 * @last_connected: time (in seconds) when a station got connected
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700230 * @num_duplicates: number of duplicate frames received from this STA
231 * @rx_fragments: number of received MPDUs
232 * @rx_dropped: number of dropped MPDUs from this STA
233 * @last_signal: signal of last received frame from this STA
Bruno Randolf541a45a2010-12-02 19:12:43 +0900234 * @avg_signal: moving average of signal of received frames from this STA
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700235 * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
Johannes Berge25cf4a2008-10-23 08:51:20 +0200236 * @tx_filtered_count: number of frames the hardware filtered for this STA
237 * @tx_retry_failed: number of frames that failed retry
238 * @tx_retry_count: total number of retries for frames to this STA
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700239 * @fail_avg: moving percentage of failed MSDUs
240 * @tx_packets: number of RX/TX MSDUs
Johannes Berge25cf4a2008-10-23 08:51:20 +0200241 * @tx_bytes: number of bytes transmitted to this STA
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700242 * @tx_fragments: number of transmitted MPDUs
Johannes Berge25cf4a2008-10-23 08:51:20 +0200243 * @tid_seq: per-TID sequence numbers for sending to this STA
244 * @ampdu_mlme: A-MPDU state machine state
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700245 * @timer_to_tid: identity mapping to ID timers
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700246 * @llid: Local link ID
247 * @plid: Peer link ID
248 * @reason: Cancel reason on PLINK_HOLDING state
249 * @plink_retries: Retries in establishment
Johannes Berge25cf4a2008-10-23 08:51:20 +0200250 * @ignore_plink_timer: ignore the peer-link timer (used internally)
251 * @plink_state: peer link state
252 * @plink_timeout: timeout of peer link
253 * @plink_timer: peer link watch timer
Johannes Bergcce4c772009-05-19 10:39:34 +0200254 * @plink_timer_was_running: used by suspend/resume to restore timers
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700255 * @debugfs: debug filesystem info
Johannes Berg17741cd2008-09-11 00:02:02 +0200256 * @sta: station information we share with the driver
Johannes Bergaf818582009-11-06 11:35:50 +0100257 * @dead: set to true when sta is unlinked
Johannes Berg34e89502010-02-03 13:59:58 +0100258 * @uploaded: set to true when sta is uploaded to the driver
Johannes Berg99ba2a12010-11-24 08:10:06 +0100259 * @lost_packets: number of consecutive lost packets
Johannes Berg693b1bb2008-02-25 16:27:48 +0100260 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700261struct sta_info {
Johannes Berg693b1bb2008-02-25 16:27:48 +0100262 /* General information, mostly static */
Jiri Bencf0706e82007-05-05 11:45:53 -0700263 struct list_head list;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100264 struct sta_info *hnext;
Jiri Bencf0706e82007-05-05 11:45:53 -0700265 struct ieee80211_local *local;
Johannes Bergd0709a62008-02-25 16:27:46 +0100266 struct ieee80211_sub_if_data *sdata;
Johannes Berge31b8212010-10-05 19:39:30 +0200267 struct ieee80211_key *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
268 struct ieee80211_key *ptk;
Jiri Bencf0706e82007-05-05 11:45:53 -0700269 struct rate_control_ref *rate_ctrl;
270 void *rate_ctrl_priv;
Johannes Berg07346f812008-05-03 01:02:02 +0200271 spinlock_t lock;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200272 spinlock_t flaglock;
Johannes Berg17741cd2008-09-11 00:02:02 +0200273
Johannes Bergaf818582009-11-06 11:35:50 +0100274 struct work_struct drv_unblock_wk;
275
Jiri Bencf0706e82007-05-05 11:45:53 -0700276 u16 listen_interval;
Jiri Bence9f207f2007-05-05 11:46:38 -0700277
Johannes Bergaf818582009-11-06 11:35:50 +0100278 bool dead;
279
Johannes Berg34e89502010-02-03 13:59:58 +0100280 bool uploaded;
Johannes Bergd0709a62008-02-25 16:27:46 +0100281
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200282 /*
283 * frequently updated, locked with own spinlock (flaglock),
284 * use the accessors defined below
285 */
Johannes Berg693b1bb2008-02-25 16:27:48 +0100286 u32 flags;
287
288 /*
289 * STA powersave frame queues, no more than the internal
290 * locking required.
291 */
292 struct sk_buff_head ps_tx_buf;
293 struct sk_buff_head tx_filtered;
294
295 /* Updated from RX path only, no locking requirements */
296 unsigned long rx_packets, rx_bytes;
297 unsigned long wep_weak_iv_count;
298 unsigned long last_rx;
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530299 long last_connected;
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700300 unsigned long num_duplicates;
301 unsigned long rx_fragments;
302 unsigned long rx_dropped;
303 int last_signal;
Bruno Randolf541a45a2010-12-02 19:12:43 +0900304 struct ewma avg_signal;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100305 __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100306
307 /* Updated from TX status path only, no locking requirements */
308 unsigned long tx_filtered_count;
309 unsigned long tx_retry_failed, tx_retry_count;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100310 /* moving percentage of failed MSDUs */
311 unsigned int fail_avg;
312
313 /* Updated from TX path only, no locking requirements */
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700314 unsigned long tx_packets;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100315 unsigned long tx_bytes;
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700316 unsigned long tx_fragments;
Johannes Berge6a98542008-10-21 12:40:02 +0200317 struct ieee80211_tx_rate last_tx_rate;
Felix Fietkau3af63342011-02-27 22:08:01 +0100318 int last_rx_rate_idx;
319 int last_rx_rate_flag;
Johannes Bergf591fa52008-07-10 11:21:26 +0200320 u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100321
Johannes Berg693b1bb2008-02-25 16:27:48 +0100322 /*
Johannes Berg07346f812008-05-03 01:02:02 +0200323 * Aggregation information, locked with lock.
Johannes Berg693b1bb2008-02-25 16:27:48 +0100324 */
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200325 struct sta_ampdu_mlme ampdu_mlme;
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700326 u8 timer_to_tid[STA_TID_NUM];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100327
Luis Carlos Coboee385852008-02-23 15:17:11 +0100328#ifdef CONFIG_MAC80211_MESH
Johannes Berg693b1bb2008-02-25 16:27:48 +0100329 /*
330 * Mesh peer link attributes
331 * TODO: move to a sub-structure that is referenced with pointer?
332 */
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700333 __le16 llid;
334 __le16 plid;
335 __le16 reason;
336 u8 plink_retries;
Johannes Berg74958832008-02-25 22:17:30 +0100337 bool ignore_plink_timer;
Johannes Berg5bb644a2009-05-17 11:40:42 +0200338 bool plink_timer_was_running;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100339 enum plink_state plink_state;
340 u32 plink_timeout;
341 struct timer_list plink_timer;
Luis Carlos Coboee385852008-02-23 15:17:11 +0100342#endif
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200343
Jiri Bence9f207f2007-05-05 11:46:38 -0700344#ifdef CONFIG_MAC80211_DEBUGFS
345 struct sta_info_debugfsdentries {
346 struct dentry *dir;
Johannes Berg63044e92008-10-07 12:04:29 +0200347 bool add_has_run;
Jiri Bence9f207f2007-05-05 11:46:38 -0700348 } debugfs;
349#endif
Johannes Berg17741cd2008-09-11 00:02:02 +0200350
Johannes Berg99ba2a12010-11-24 08:10:06 +0100351 unsigned int lost_packets;
352
Johannes Berg17741cd2008-09-11 00:02:02 +0200353 /* keep last! */
354 struct ieee80211_sta sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700355};
356
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100357static inline enum plink_state sta_plink_state(struct sta_info *sta)
358{
359#ifdef CONFIG_MAC80211_MESH
360 return sta->plink_state;
361#endif
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800362 return PLINK_LISTEN;
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100363}
364
Johannes Berg07346f812008-05-03 01:02:02 +0200365static inline void set_sta_flags(struct sta_info *sta, const u32 flags)
366{
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200367 unsigned long irqfl;
368
369 spin_lock_irqsave(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200370 sta->flags |= flags;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200371 spin_unlock_irqrestore(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200372}
373
374static inline void clear_sta_flags(struct sta_info *sta, const u32 flags)
375{
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200376 unsigned long irqfl;
377
378 spin_lock_irqsave(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200379 sta->flags &= ~flags;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200380 spin_unlock_irqrestore(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200381}
382
Johannes Berg07346f812008-05-03 01:02:02 +0200383static inline u32 test_sta_flags(struct sta_info *sta, const u32 flags)
384{
385 u32 ret;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200386 unsigned long irqfl;
Johannes Berg07346f812008-05-03 01:02:02 +0200387
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200388 spin_lock_irqsave(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200389 ret = sta->flags & flags;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200390 spin_unlock_irqrestore(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200391
392 return ret;
393}
394
395static inline u32 test_and_clear_sta_flags(struct sta_info *sta,
396 const u32 flags)
397{
398 u32 ret;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200399 unsigned long irqfl;
Johannes Berg07346f812008-05-03 01:02:02 +0200400
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200401 spin_lock_irqsave(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200402 ret = sta->flags & flags;
403 sta->flags &= ~flags;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200404 spin_unlock_irqrestore(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200405
406 return ret;
407}
408
409static inline u32 get_sta_flags(struct sta_info *sta)
410{
411 u32 ret;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200412 unsigned long irqfl;
Johannes Berg07346f812008-05-03 01:02:02 +0200413
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200414 spin_lock_irqsave(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200415 ret = sta->flags;
Johannes Berg5a9f7b02008-06-18 14:58:09 +0200416 spin_unlock_irqrestore(&sta->flaglock, irqfl);
Johannes Berg07346f812008-05-03 01:02:02 +0200417
418 return ret;
419}
420
Jiri Bencf0706e82007-05-05 11:45:53 -0700421
Jiri Bencf0706e82007-05-05 11:45:53 -0700422
423#define STA_HASH_SIZE 256
424#define STA_HASH(sta) (sta[5])
425
426
427/* Maximum number of frames to buffer per power saving station */
428#define STA_MAX_TX_BUFFER 128
429
430/* Minimum buffered frame expiry time. If STA uses listen interval that is
431 * smaller than this value, the minimum value here is used instead. */
432#define STA_TX_BUFFER_EXPIRE (10 * HZ)
433
434/* How often station data is cleaned up (e.g., expiration of buffered frames)
435 */
436#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
437
Johannes Bergd0709a62008-02-25 16:27:46 +0100438/*
Johannes Bergabe60632009-11-25 17:46:18 +0100439 * Get a STA info, must be under RCU read lock.
Johannes Bergd0709a62008-02-25 16:27:46 +0100440 */
Johannes Bergabe60632009-11-25 17:46:18 +0100441struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
442 const u8 *addr);
443
Felix Fietkau0e5ded52010-01-08 18:10:58 +0100444struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
445 const u8 *addr);
446
Johannes Bergabe60632009-11-25 17:46:18 +0100447static inline
448void for_each_sta_info_type_check(struct ieee80211_local *local,
449 const u8 *addr,
450 struct sta_info *sta,
451 struct sta_info *nxt)
452{
453}
454
Felix Fietkau38bdb652010-06-25 01:44:33 +0200455#define for_each_sta_info(local, _addr, _sta, nxt) \
Johannes Bergabe60632009-11-25 17:46:18 +0100456 for ( /* initialise loop */ \
Felix Fietkau38bdb652010-06-25 01:44:33 +0200457 _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\
458 nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \
Johannes Bergabe60632009-11-25 17:46:18 +0100459 /* typecheck */ \
Felix Fietkau38bdb652010-06-25 01:44:33 +0200460 for_each_sta_info_type_check(local, (_addr), _sta, nxt),\
Johannes Bergabe60632009-11-25 17:46:18 +0100461 /* continue condition */ \
Felix Fietkau38bdb652010-06-25 01:44:33 +0200462 _sta; \
Johannes Bergabe60632009-11-25 17:46:18 +0100463 /* advance loop */ \
Felix Fietkau38bdb652010-06-25 01:44:33 +0200464 _sta = nxt, \
465 nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \
Johannes Bergabe60632009-11-25 17:46:18 +0100466 ) \
467 /* compare address and run code only if it matches */ \
Felix Fietkau38bdb652010-06-25 01:44:33 +0200468 if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0)
Johannes Bergabe60632009-11-25 17:46:18 +0100469
Johannes Bergd0709a62008-02-25 16:27:46 +0100470/*
471 * Get STA info by index, BROKEN!
472 */
Johannes Berg3b53fde82009-11-16 12:00:37 +0100473struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
474 int idx);
Johannes Bergd0709a62008-02-25 16:27:46 +0100475/*
Johannes Berg73651ee2008-02-25 16:27:47 +0100476 * Create a new STA info, caller owns returned structure
477 * until sta_info_insert().
Johannes Bergd0709a62008-02-25 16:27:46 +0100478 */
Johannes Berg73651ee2008-02-25 16:27:47 +0100479struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
480 u8 *addr, gfp_t gfp);
481/*
482 * Insert STA info into hash table/list, returns zero or a
483 * -EEXIST if (if the same MAC address is already present).
484 *
Johannes Berg34e89502010-02-03 13:59:58 +0100485 * Calling the non-rcu version makes the caller relinquish,
486 * the _rcu version calls read_lock_rcu() and must be called
487 * without it held.
Johannes Berg73651ee2008-02-25 16:27:47 +0100488 */
489int sta_info_insert(struct sta_info *sta);
Johannes Berg34e89502010-02-03 13:59:58 +0100490int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
491int sta_info_insert_atomic(struct sta_info *sta);
Johannes Bergd0709a62008-02-25 16:27:46 +0100492
Johannes Berg34e89502010-02-03 13:59:58 +0100493int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
494 const u8 *addr);
495int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
496 const u8 *addr);
497
Johannes Bergd0709a62008-02-25 16:27:46 +0100498void sta_info_set_tim_bit(struct sta_info *sta);
499void sta_info_clear_tim_bit(struct sta_info *sta);
500
Jiri Bencf0706e82007-05-05 11:45:53 -0700501void sta_info_init(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700502void sta_info_stop(struct ieee80211_local *local);
Johannes Berg44213b52008-02-25 16:27:49 +0100503int sta_info_flush(struct ieee80211_local *local,
Johannes Bergaf8cdcd2009-04-19 21:25:43 +0200504 struct ieee80211_sub_if_data *sdata);
Johannes Berg24723d12008-09-11 00:01:46 +0200505void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
506 unsigned long exp_time);
Johannes Berg004c8722008-02-20 11:21:35 +0100507
Johannes Bergaf818582009-11-06 11:35:50 +0100508void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
509void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
510
Jiri Bencf0706e82007-05-05 11:45:53 -0700511#endif /* STA_INFO_H */