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f0706e82 JB |
1 | /* |
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> | |
af818581 | 15 | #include <linux/workqueue.h> |
2c8dccc7 | 16 | #include "key.h" |
f0706e82 | 17 | |
238814fd JB |
18 | /** |
19 | * enum ieee80211_sta_info_flags - Stations flags | |
20 | * | |
21 | * These flags are used with &struct sta_info's @flags member. | |
22 | * | |
23 | * @WLAN_STA_AUTH: Station is authenticated. | |
24 | * @WLAN_STA_ASSOC: Station is associated. | |
af818581 | 25 | * @WLAN_STA_PS_STA: Station is in power-save mode |
238814fd JB |
26 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
27 | * This bit is always checked so needs to be enabled for all stations | |
28 | * when virtual port control is not in use. | |
29 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble | |
30 | * frames. | |
31 | * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP. | |
32 | * @WLAN_STA_WME: Station is a QoS-STA. | |
33 | * @WLAN_STA_WDS: Station is one of our WDS peers. | |
d46e144b | 34 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
e039fa4a | 35 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
d46e144b | 36 | * frame to this station is transmitted. |
5394af4d | 37 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
618f356b | 38 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
098a6070 | 39 | * during suspend/resume and station removal. |
af818581 JB |
40 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
41 | * power-save mode logically to flush frames that might still | |
42 | * be in the queues | |
43 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping | |
44 | * station in power-save mode, reply when the driver unblocks. | |
238814fd JB |
45 | */ |
46 | enum ieee80211_sta_info_flags { | |
47 | WLAN_STA_AUTH = 1<<0, | |
48 | WLAN_STA_ASSOC = 1<<1, | |
af818581 | 49 | WLAN_STA_PS_STA = 1<<2, |
836341a7 JB |
50 | WLAN_STA_AUTHORIZED = 1<<3, |
51 | WLAN_STA_SHORT_PREAMBLE = 1<<4, | |
52 | WLAN_STA_ASSOC_AP = 1<<5, | |
53 | WLAN_STA_WME = 1<<6, | |
54 | WLAN_STA_WDS = 1<<7, | |
d46e144b | 55 | WLAN_STA_CLEAR_PS_FILT = 1<<9, |
5394af4d | 56 | WLAN_STA_MFP = 1<<10, |
618f356b | 57 | WLAN_STA_BLOCK_BA = 1<<11, |
af818581 JB |
58 | WLAN_STA_PS_DRIVER = 1<<12, |
59 | WLAN_STA_PSPOLL = 1<<13, | |
238814fd | 60 | }; |
f0706e82 | 61 | |
5aae2880 RR |
62 | #define STA_TID_NUM 16 |
63 | #define ADDBA_RESP_INTERVAL HZ | |
a622ab72 | 64 | #define HT_AGG_MAX_RETRIES 0x3 |
5aae2880 | 65 | |
a622ab72 JB |
66 | #define HT_AGG_STATE_DRV_READY 0 |
67 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
68 | #define HT_AGG_STATE_OPERATIONAL 2 | |
69 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
70 | #define HT_AGG_STATE_WANT_START 4 |
71 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 RR |
72 | |
73 | /** | |
74 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
75 | * | |
a622ab72 | 76 | * @rcu_head: rcu head for freeing structure |
80656c20 | 77 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 78 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 79 | * @dialog_token: dialog token for aggregation session |
a622ab72 JB |
80 | * @state: session state (see above) |
81 | * @stop_initiator: initiator of a session stop | |
82 | * | |
83 | * This structure is protected by RCU and the per-station | |
84 | * spinlock. Assignments to the array holding it must hold | |
85 | * the spinlock, only the TX path can access it under RCU | |
86 | * lock-free if, and only if, the state has the flag | |
87 | * %HT_AGG_STATE_OPERATIONAL set. Otherwise, the TX path | |
88 | * must also acquire the spinlock and re-check the state, | |
89 | * see comments in the tx code touching it. | |
80656c20 RR |
90 | */ |
91 | struct tid_ampdu_tx { | |
a622ab72 | 92 | struct rcu_head rcu_head; |
80656c20 | 93 | struct timer_list addba_resp_timer; |
cd8ffc80 | 94 | struct sk_buff_head pending; |
a622ab72 | 95 | unsigned long state; |
cee24a3e | 96 | u8 dialog_token; |
a622ab72 | 97 | u8 stop_initiator; |
80656c20 | 98 | }; |
5aae2880 RR |
99 | |
100 | /** | |
101 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
102 | * | |
5aae2880 | 103 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
4d050f1d | 104 | * @reorder_time: jiffies when skb was added |
5aae2880 | 105 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 106 | * @reorder_timer: releases expired frames from the reorder buffer. |
056cdd59 JB |
107 | * @head_seq_num: head sequence number in reordering buffer. |
108 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
109 | * @ssn: Starting Sequence Number expected to be aggregated. |
110 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 111 | * @timeout: reset timer value (in TUs). |
cee24a3e | 112 | * @dialog_token: dialog token for aggregation session |
a87f736d | 113 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 114 | * @reorder_lock: serializes access to reorder buffer, see below. |
a87f736d JB |
115 | * |
116 | * This structure is protected by RCU and the per-station | |
117 | * spinlock. Assignments to the array holding it must hold | |
2bff8ebf CL |
118 | * the spinlock. |
119 | * | |
120 | * The @reorder_lock is used to protect the variables and | |
121 | * arrays such as @reorder_buf, @reorder_time, @head_seq_num, | |
122 | * @stored_mpdu_num and @reorder_time from being corrupted by | |
123 | * concurrent access of the RX path and the expired frame | |
124 | * release timer. | |
5aae2880 RR |
125 | */ |
126 | struct tid_ampdu_rx { | |
a87f736d | 127 | struct rcu_head rcu_head; |
2bff8ebf | 128 | spinlock_t reorder_lock; |
5aae2880 | 129 | struct sk_buff **reorder_buf; |
4d050f1d | 130 | unsigned long *reorder_time; |
5aae2880 | 131 | struct timer_list session_timer; |
2bff8ebf | 132 | struct timer_list reorder_timer; |
056cdd59 JB |
133 | u16 head_seq_num; |
134 | u16 stored_mpdu_num; | |
cee24a3e RR |
135 | u16 ssn; |
136 | u16 buf_size; | |
137 | u16 timeout; | |
138 | u8 dialog_token; | |
5aae2880 RR |
139 | }; |
140 | ||
fcea6007 JB |
141 | /** |
142 | * struct sta_ampdu_mlme - STA aggregation information. | |
143 | * | |
a87f736d | 144 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
fcea6007 JB |
145 | * @tid_tx: aggregation info for Tx per TID |
146 | * @addba_req_num: number of times addBA request has been sent. | |
147 | * @dialog_token_allocator: dialog token enumerator for each new session; | |
0ab33703 | 148 | * @work: work struct for starting/stopping aggregation |
7c3b1dd8 JB |
149 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
150 | * RX timer expired until the work for it runs | |
a93e3644 JB |
151 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
152 | * to tid_tx[idx], which are protected by the sta spinlock) | |
fcea6007 JB |
153 | */ |
154 | struct sta_ampdu_mlme { | |
a93e3644 | 155 | struct mutex mtx; |
fcea6007 | 156 | /* rx */ |
fcea6007 | 157 | struct tid_ampdu_rx *tid_rx[STA_TID_NUM]; |
7c3b1dd8 | 158 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)]; |
fcea6007 | 159 | /* tx */ |
0ab33703 | 160 | struct work_struct work; |
fcea6007 JB |
161 | struct tid_ampdu_tx *tid_tx[STA_TID_NUM]; |
162 | u8 addba_req_num[STA_TID_NUM]; | |
163 | u8 dialog_token_allocator; | |
164 | }; | |
165 | ||
166 | ||
b4e08ea1 LCC |
167 | /** |
168 | * enum plink_state - state of a mesh peer link finite state machine | |
169 | * | |
170 | * @PLINK_LISTEN: initial state, considered the implicit state of non existant | |
171 | * mesh peer links | |
172 | * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer | |
173 | * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer | |
174 | * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh | |
175 | * peer | |
176 | * @PLINK_ESTAB: mesh peer link is established | |
177 | * @PLINK_HOLDING: mesh peer link is being closed or cancelled | |
178 | * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded | |
179 | */ | |
ee385855 | 180 | enum plink_state { |
b4e08ea1 LCC |
181 | PLINK_LISTEN, |
182 | PLINK_OPN_SNT, | |
183 | PLINK_OPN_RCVD, | |
184 | PLINK_CNF_RCVD, | |
185 | PLINK_ESTAB, | |
186 | PLINK_HOLDING, | |
187 | PLINK_BLOCKED | |
ee385855 | 188 | }; |
ee385855 | 189 | |
693b1bbc JB |
190 | /** |
191 | * struct sta_info - STA information | |
192 | * | |
193 | * This structure collects information about a station that | |
194 | * mac80211 is communicating with. | |
195 | * | |
196 | * @list: global linked list entry | |
197 | * @hnext: hash table linked list pointer | |
198 | * @local: pointer to the global information | |
e25cf4a6 JB |
199 | * @sdata: virtual interface this station belongs to |
200 | * @key: peer key negotiated with this station, if any | |
201 | * @rate_ctrl: rate control algorithm reference | |
202 | * @rate_ctrl_priv: rate control private per-STA pointer | |
203 | * @last_tx_rate: rate used for last transmit, to report to userspace as | |
204 | * "the" transmit rate | |
6ef307bc RD |
205 | * @lock: used for locking all fields that require locking, see comments |
206 | * in the header file. | |
207 | * @flaglock: spinlock for flags accesses | |
841507f5 | 208 | * @drv_unblock_wk: used for driver PS unblocking |
e25cf4a6 | 209 | * @listen_interval: listen interval of this station, when we're acting as AP |
693b1bbc JB |
210 | * @flags: STA flags, see &enum ieee80211_sta_info_flags |
211 | * @ps_tx_buf: buffer of frames to transmit to this station | |
212 | * when it leaves power saving state | |
213 | * @tx_filtered: buffer of frames we already tried to transmit | |
214 | * but were filtered by hardware due to STA having entered | |
215 | * power saving state | |
216 | * @rx_packets: Number of MSDUs received from this STA | |
217 | * @rx_bytes: Number of bytes received from this STA | |
e25cf4a6 JB |
218 | * @wep_weak_iv_count: number of weak WEP IVs received from this station |
219 | * @last_rx: time (in jiffies) when last frame was received from this STA | |
6ef307bc RD |
220 | * @num_duplicates: number of duplicate frames received from this STA |
221 | * @rx_fragments: number of received MPDUs | |
222 | * @rx_dropped: number of dropped MPDUs from this STA | |
223 | * @last_signal: signal of last received frame from this STA | |
6ef307bc | 224 | * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
e25cf4a6 JB |
225 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
226 | * @tx_retry_failed: number of frames that failed retry | |
227 | * @tx_retry_count: total number of retries for frames to this STA | |
6ef307bc RD |
228 | * @fail_avg: moving percentage of failed MSDUs |
229 | * @tx_packets: number of RX/TX MSDUs | |
e25cf4a6 | 230 | * @tx_bytes: number of bytes transmitted to this STA |
6ef307bc | 231 | * @tx_fragments: number of transmitted MPDUs |
e25cf4a6 JB |
232 | * @tid_seq: per-TID sequence numbers for sending to this STA |
233 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 234 | * @timer_to_tid: identity mapping to ID timers |
6ef307bc RD |
235 | * @llid: Local link ID |
236 | * @plid: Peer link ID | |
237 | * @reason: Cancel reason on PLINK_HOLDING state | |
238 | * @plink_retries: Retries in establishment | |
e25cf4a6 JB |
239 | * @ignore_plink_timer: ignore the peer-link timer (used internally) |
240 | * @plink_state: peer link state | |
241 | * @plink_timeout: timeout of peer link | |
242 | * @plink_timer: peer link watch timer | |
cce4c77b | 243 | * @plink_timer_was_running: used by suspend/resume to restore timers |
6ef307bc | 244 | * @debugfs: debug filesystem info |
17741cdc | 245 | * @sta: station information we share with the driver |
af818581 | 246 | * @dead: set to true when sta is unlinked |
34e89507 | 247 | * @uploaded: set to true when sta is uploaded to the driver |
693b1bbc | 248 | */ |
f0706e82 | 249 | struct sta_info { |
693b1bbc | 250 | /* General information, mostly static */ |
f0706e82 | 251 | struct list_head list; |
693b1bbc | 252 | struct sta_info *hnext; |
f0706e82 | 253 | struct ieee80211_local *local; |
d0709a65 | 254 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 255 | struct ieee80211_key *key; |
f0706e82 JB |
256 | struct rate_control_ref *rate_ctrl; |
257 | void *rate_ctrl_priv; | |
07346f81 | 258 | spinlock_t lock; |
5a9f7b04 | 259 | spinlock_t flaglock; |
17741cdc | 260 | |
af818581 JB |
261 | struct work_struct drv_unblock_wk; |
262 | ||
693b1bbc | 263 | u16 listen_interval; |
f0706e82 | 264 | |
af818581 JB |
265 | bool dead; |
266 | ||
34e89507 | 267 | bool uploaded; |
693b1bbc | 268 | |
5a9f7b04 JB |
269 | /* |
270 | * frequently updated, locked with own spinlock (flaglock), | |
271 | * use the accessors defined below | |
272 | */ | |
693b1bbc JB |
273 | u32 flags; |
274 | ||
275 | /* | |
276 | * STA powersave frame queues, no more than the internal | |
277 | * locking required. | |
278 | */ | |
279 | struct sk_buff_head ps_tx_buf; | |
280 | struct sk_buff_head tx_filtered; | |
281 | ||
282 | /* Updated from RX path only, no locking requirements */ | |
283 | unsigned long rx_packets, rx_bytes; | |
284 | unsigned long wep_weak_iv_count; | |
285 | unsigned long last_rx; | |
6ef307bc RD |
286 | unsigned long num_duplicates; |
287 | unsigned long rx_fragments; | |
288 | unsigned long rx_dropped; | |
289 | int last_signal; | |
693b1bbc | 290 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; |
693b1bbc JB |
291 | |
292 | /* Updated from TX status path only, no locking requirements */ | |
293 | unsigned long tx_filtered_count; | |
294 | unsigned long tx_retry_failed, tx_retry_count; | |
693b1bbc JB |
295 | /* moving percentage of failed MSDUs */ |
296 | unsigned int fail_avg; | |
297 | ||
298 | /* Updated from TX path only, no locking requirements */ | |
6ef307bc | 299 | unsigned long tx_packets; |
693b1bbc | 300 | unsigned long tx_bytes; |
6ef307bc | 301 | unsigned long tx_fragments; |
e6a9854b | 302 | struct ieee80211_tx_rate last_tx_rate; |
f591fa5d | 303 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
f0706e82 | 304 | |
d0709a65 | 305 | /* |
07346f81 | 306 | * Aggregation information, locked with lock. |
d0709a65 | 307 | */ |
5aae2880 | 308 | struct sta_ampdu_mlme ampdu_mlme; |
6ef307bc | 309 | u8 timer_to_tid[STA_TID_NUM]; |
693b1bbc | 310 | |
ee385855 | 311 | #ifdef CONFIG_MAC80211_MESH |
693b1bbc JB |
312 | /* |
313 | * Mesh peer link attributes | |
314 | * TODO: move to a sub-structure that is referenced with pointer? | |
315 | */ | |
6ef307bc RD |
316 | __le16 llid; |
317 | __le16 plid; | |
318 | __le16 reason; | |
319 | u8 plink_retries; | |
7495883b | 320 | bool ignore_plink_timer; |
5bb644a0 | 321 | bool plink_timer_was_running; |
ee385855 LCC |
322 | enum plink_state plink_state; |
323 | u32 plink_timeout; | |
324 | struct timer_list plink_timer; | |
ee385855 | 325 | #endif |
10816d40 | 326 | |
e9f207f0 JB |
327 | #ifdef CONFIG_MAC80211_DEBUGFS |
328 | struct sta_info_debugfsdentries { | |
329 | struct dentry *dir; | |
63044e9f | 330 | bool add_has_run; |
e9f207f0 JB |
331 | } debugfs; |
332 | #endif | |
17741cdc JB |
333 | |
334 | /* keep last! */ | |
335 | struct ieee80211_sta sta; | |
f0706e82 JB |
336 | }; |
337 | ||
d6d1a5a7 JB |
338 | static inline enum plink_state sta_plink_state(struct sta_info *sta) |
339 | { | |
340 | #ifdef CONFIG_MAC80211_MESH | |
341 | return sta->plink_state; | |
342 | #endif | |
b4e08ea1 | 343 | return PLINK_LISTEN; |
d6d1a5a7 JB |
344 | } |
345 | ||
07346f81 JB |
346 | static inline void set_sta_flags(struct sta_info *sta, const u32 flags) |
347 | { | |
5a9f7b04 JB |
348 | unsigned long irqfl; |
349 | ||
350 | spin_lock_irqsave(&sta->flaglock, irqfl); | |
07346f81 | 351 | sta->flags |= flags; |
5a9f7b04 | 352 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
07346f81 JB |
353 | } |
354 | ||
355 | static inline void clear_sta_flags(struct sta_info *sta, const u32 flags) | |
356 | { | |
5a9f7b04 JB |
357 | unsigned long irqfl; |
358 | ||
359 | spin_lock_irqsave(&sta->flaglock, irqfl); | |
07346f81 | 360 | sta->flags &= ~flags; |
5a9f7b04 | 361 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
07346f81 JB |
362 | } |
363 | ||
07346f81 JB |
364 | static inline u32 test_sta_flags(struct sta_info *sta, const u32 flags) |
365 | { | |
366 | u32 ret; | |
5a9f7b04 | 367 | unsigned long irqfl; |
07346f81 | 368 | |
5a9f7b04 | 369 | spin_lock_irqsave(&sta->flaglock, irqfl); |
07346f81 | 370 | ret = sta->flags & flags; |
5a9f7b04 | 371 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
07346f81 JB |
372 | |
373 | return ret; | |
374 | } | |
375 | ||
376 | static inline u32 test_and_clear_sta_flags(struct sta_info *sta, | |
377 | const u32 flags) | |
378 | { | |
379 | u32 ret; | |
5a9f7b04 | 380 | unsigned long irqfl; |
07346f81 | 381 | |
5a9f7b04 | 382 | spin_lock_irqsave(&sta->flaglock, irqfl); |
07346f81 JB |
383 | ret = sta->flags & flags; |
384 | sta->flags &= ~flags; | |
5a9f7b04 | 385 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
07346f81 JB |
386 | |
387 | return ret; | |
388 | } | |
389 | ||
390 | static inline u32 get_sta_flags(struct sta_info *sta) | |
391 | { | |
392 | u32 ret; | |
5a9f7b04 | 393 | unsigned long irqfl; |
07346f81 | 394 | |
5a9f7b04 | 395 | spin_lock_irqsave(&sta->flaglock, irqfl); |
07346f81 | 396 | ret = sta->flags; |
5a9f7b04 | 397 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
07346f81 JB |
398 | |
399 | return ret; | |
400 | } | |
401 | ||
f0706e82 | 402 | |
f0706e82 JB |
403 | |
404 | #define STA_HASH_SIZE 256 | |
405 | #define STA_HASH(sta) (sta[5]) | |
406 | ||
407 | ||
408 | /* Maximum number of frames to buffer per power saving station */ | |
409 | #define STA_MAX_TX_BUFFER 128 | |
410 | ||
411 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
412 | * smaller than this value, the minimum value here is used instead. */ | |
413 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
414 | ||
415 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
416 | */ | |
417 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
418 | ||
d0709a65 | 419 | /* |
abe60632 | 420 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 421 | */ |
abe60632 JB |
422 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
423 | const u8 *addr); | |
424 | ||
0e5ded5a FF |
425 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
426 | const u8 *addr); | |
427 | ||
abe60632 JB |
428 | static inline |
429 | void for_each_sta_info_type_check(struct ieee80211_local *local, | |
430 | const u8 *addr, | |
431 | struct sta_info *sta, | |
432 | struct sta_info *nxt) | |
433 | { | |
434 | } | |
435 | ||
38bdb650 | 436 | #define for_each_sta_info(local, _addr, _sta, nxt) \ |
abe60632 | 437 | for ( /* initialise loop */ \ |
38bdb650 FF |
438 | _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
439 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ | |
abe60632 | 440 | /* typecheck */ \ |
38bdb650 | 441 | for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
abe60632 | 442 | /* continue condition */ \ |
38bdb650 | 443 | _sta; \ |
abe60632 | 444 | /* advance loop */ \ |
38bdb650 FF |
445 | _sta = nxt, \ |
446 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ | |
abe60632 JB |
447 | ) \ |
448 | /* compare address and run code only if it matches */ \ | |
38bdb650 | 449 | if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0) |
abe60632 | 450 | |
d0709a65 JB |
451 | /* |
452 | * Get STA info by index, BROKEN! | |
453 | */ | |
3b53fde8 JB |
454 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
455 | int idx); | |
d0709a65 | 456 | /* |
73651ee6 JB |
457 | * Create a new STA info, caller owns returned structure |
458 | * until sta_info_insert(). | |
d0709a65 | 459 | */ |
73651ee6 JB |
460 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
461 | u8 *addr, gfp_t gfp); | |
462 | /* | |
463 | * Insert STA info into hash table/list, returns zero or a | |
464 | * -EEXIST if (if the same MAC address is already present). | |
465 | * | |
34e89507 JB |
466 | * Calling the non-rcu version makes the caller relinquish, |
467 | * the _rcu version calls read_lock_rcu() and must be called | |
468 | * without it held. | |
73651ee6 JB |
469 | */ |
470 | int sta_info_insert(struct sta_info *sta); | |
34e89507 JB |
471 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
472 | int sta_info_insert_atomic(struct sta_info *sta); | |
473 | ||
474 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, | |
475 | const u8 *addr); | |
476 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
477 | const u8 *addr); | |
f0706e82 | 478 | |
004c872e JB |
479 | void sta_info_set_tim_bit(struct sta_info *sta); |
480 | void sta_info_clear_tim_bit(struct sta_info *sta); | |
481 | ||
d0709a65 JB |
482 | void sta_info_init(struct ieee80211_local *local); |
483 | int sta_info_start(struct ieee80211_local *local); | |
484 | void sta_info_stop(struct ieee80211_local *local); | |
44213b5e | 485 | int sta_info_flush(struct ieee80211_local *local, |
af8cdcd8 | 486 | struct ieee80211_sub_if_data *sdata); |
24723d1b JB |
487 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
488 | unsigned long exp_time); | |
d0709a65 | 489 | |
af818581 JB |
490 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
491 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
492 | ||
f0706e82 | 493 | #endif /* STA_INFO_H */ |