Commit | Line | Data |
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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> |
541a45a1 | 16 | #include <linux/average.h> |
2c8dccc7 | 17 | #include "key.h" |
f0706e82 | 18 | |
238814fd JB |
19 | /** |
20 | * enum ieee80211_sta_info_flags - Stations flags | |
21 | * | |
c2c98fde JB |
22 | * These flags are used with &struct sta_info's @flags member, but |
23 | * only indirectly with set_sta_flag() and friends. | |
238814fd JB |
24 | * |
25 | * @WLAN_STA_AUTH: Station is authenticated. | |
26 | * @WLAN_STA_ASSOC: Station is associated. | |
af818581 | 27 | * @WLAN_STA_PS_STA: Station is in power-save mode |
238814fd JB |
28 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
29 | * This bit is always checked so needs to be enabled for all stations | |
30 | * when virtual port control is not in use. | |
31 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble | |
32 | * frames. | |
238814fd JB |
33 | * @WLAN_STA_WME: Station is a QoS-STA. |
34 | * @WLAN_STA_WDS: Station is one of our WDS peers. | |
d46e144b | 35 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
e039fa4a | 36 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
d46e144b | 37 | * frame to this station is transmitted. |
5394af4d | 38 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
618f356b | 39 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
098a6070 | 40 | * during suspend/resume and station removal. |
af818581 JB |
41 | * @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. | |
941c93cd AN |
46 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
47 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct | |
48 | * packets. This means the link is enabled. | |
47086fc5 JB |
49 | * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
50 | * keeping station in power-save mode, reply when the driver | |
51 | * unblocks the station. | |
52 | * @WLAN_STA_SP: Station is in a service period, so don't try to | |
deeaee19 | 53 | * reply to other uAPSD trigger frames or PS-Poll. |
e7f4a940 | 54 | * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
83d5cc01 | 55 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
e1936e94 | 56 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
238814fd JB |
57 | */ |
58 | enum ieee80211_sta_info_flags { | |
c2c98fde JB |
59 | WLAN_STA_AUTH, |
60 | WLAN_STA_ASSOC, | |
61 | WLAN_STA_PS_STA, | |
62 | WLAN_STA_AUTHORIZED, | |
63 | WLAN_STA_SHORT_PREAMBLE, | |
c2c98fde JB |
64 | WLAN_STA_WME, |
65 | WLAN_STA_WDS, | |
66 | WLAN_STA_CLEAR_PS_FILT, | |
67 | WLAN_STA_MFP, | |
68 | WLAN_STA_BLOCK_BA, | |
69 | WLAN_STA_PS_DRIVER, | |
70 | WLAN_STA_PSPOLL, | |
71 | WLAN_STA_TDLS_PEER, | |
72 | WLAN_STA_TDLS_PEER_AUTH, | |
73 | WLAN_STA_UAPSD, | |
74 | WLAN_STA_SP, | |
e7f4a940 | 75 | WLAN_STA_4ADDR_EVENT, |
83d5cc01 | 76 | WLAN_STA_INSERTED, |
e1936e94 | 77 | WLAN_STA_RATE_CONTROL, |
238814fd | 78 | }; |
d9a7ddb0 | 79 | |
5aae2880 RR |
80 | #define STA_TID_NUM 16 |
81 | #define ADDBA_RESP_INTERVAL HZ | |
84381b4e NM |
82 | #define HT_AGG_MAX_RETRIES 15 |
83 | #define HT_AGG_BURST_RETRIES 3 | |
84 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) | |
5aae2880 | 85 | |
a622ab72 JB |
86 | #define HT_AGG_STATE_DRV_READY 0 |
87 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
88 | #define HT_AGG_STATE_OPERATIONAL 2 | |
89 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
90 | #define HT_AGG_STATE_WANT_START 4 |
91 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 RR |
92 | |
93 | /** | |
94 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
95 | * | |
a622ab72 | 96 | * @rcu_head: rcu head for freeing structure |
285fa695 | 97 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
80656c20 | 98 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 99 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 100 | * @dialog_token: dialog token for aggregation session |
bd2ce6e4 | 101 | * @timeout: session timeout value to be filled in ADDBA requests |
a622ab72 JB |
102 | * @state: session state (see above) |
103 | * @stop_initiator: initiator of a session stop | |
53f73c09 | 104 | * @tx_stop: TX DelBA frame when stopping |
0b01f030 | 105 | * @buf_size: reorder buffer size at receiver |
f0425bed FF |
106 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
107 | * @bar_pending: BAR needs to be re-sent | |
a622ab72 | 108 | * |
dd318575 JB |
109 | * This structure's lifetime is managed by RCU, assignments to |
110 | * the array holding it must hold the aggregation mutex. | |
111 | * | |
112 | * The TX path can access it under RCU lock-free if, and | |
113 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL | |
114 | * set. Otherwise, the TX path must also acquire the spinlock | |
115 | * and re-check the state, see comments in the tx code | |
116 | * touching it. | |
80656c20 RR |
117 | */ |
118 | struct tid_ampdu_tx { | |
a622ab72 | 119 | struct rcu_head rcu_head; |
285fa695 | 120 | struct timer_list session_timer; |
80656c20 | 121 | struct timer_list addba_resp_timer; |
cd8ffc80 | 122 | struct sk_buff_head pending; |
a622ab72 | 123 | unsigned long state; |
bd2ce6e4 | 124 | u16 timeout; |
cee24a3e | 125 | u8 dialog_token; |
a622ab72 | 126 | u8 stop_initiator; |
53f73c09 | 127 | bool tx_stop; |
0b01f030 | 128 | u8 buf_size; |
f0425bed FF |
129 | |
130 | u16 failed_bar_ssn; | |
131 | bool bar_pending; | |
80656c20 | 132 | }; |
5aae2880 RR |
133 | |
134 | /** | |
135 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
136 | * | |
5aae2880 | 137 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
4d050f1d | 138 | * @reorder_time: jiffies when skb was added |
5aae2880 | 139 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 140 | * @reorder_timer: releases expired frames from the reorder buffer. |
056cdd59 JB |
141 | * @head_seq_num: head sequence number in reordering buffer. |
142 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
143 | * @ssn: Starting Sequence Number expected to be aggregated. |
144 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 145 | * @timeout: reset timer value (in TUs). |
cee24a3e | 146 | * @dialog_token: dialog token for aggregation session |
a87f736d | 147 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 148 | * @reorder_lock: serializes access to reorder buffer, see below. |
a87f736d | 149 | * |
dd318575 JB |
150 | * This structure's lifetime is managed by RCU, assignments to |
151 | * the array holding it must hold the aggregation mutex. | |
2bff8ebf | 152 | * |
dd318575 JB |
153 | * The @reorder_lock is used to protect the members of this |
154 | * struct, except for @timeout, @buf_size and @dialog_token, | |
155 | * which are constant across the lifetime of the struct (the | |
156 | * dialog token being used only for debugging). | |
5aae2880 RR |
157 | */ |
158 | struct tid_ampdu_rx { | |
a87f736d | 159 | struct rcu_head rcu_head; |
2bff8ebf | 160 | spinlock_t reorder_lock; |
5aae2880 | 161 | struct sk_buff **reorder_buf; |
4d050f1d | 162 | unsigned long *reorder_time; |
5aae2880 | 163 | struct timer_list session_timer; |
2bff8ebf | 164 | struct timer_list reorder_timer; |
056cdd59 JB |
165 | u16 head_seq_num; |
166 | u16 stored_mpdu_num; | |
cee24a3e RR |
167 | u16 ssn; |
168 | u16 buf_size; | |
169 | u16 timeout; | |
170 | u8 dialog_token; | |
5aae2880 RR |
171 | }; |
172 | ||
fcea6007 JB |
173 | /** |
174 | * struct sta_ampdu_mlme - STA aggregation information. | |
175 | * | |
a87f736d | 176 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
fcea6007 | 177 | * @tid_tx: aggregation info for Tx per TID |
ec034b20 | 178 | * @tid_start_tx: sessions where start was requested |
fcea6007 | 179 | * @addba_req_num: number of times addBA request has been sent. |
84381b4e | 180 | * @last_addba_req_time: timestamp of the last addBA request. |
fcea6007 | 181 | * @dialog_token_allocator: dialog token enumerator for each new session; |
0ab33703 | 182 | * @work: work struct for starting/stopping aggregation |
7c3b1dd8 JB |
183 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
184 | * RX timer expired until the work for it runs | |
f41ccd71 SL |
185 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
186 | * driver requested to close until the work for it runs | |
a93e3644 JB |
187 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
188 | * to tid_tx[idx], which are protected by the sta spinlock) | |
fcea6007 JB |
189 | */ |
190 | struct sta_ampdu_mlme { | |
a93e3644 | 191 | struct mutex mtx; |
fcea6007 | 192 | /* rx */ |
40b275b6 | 193 | struct tid_ampdu_rx __rcu *tid_rx[STA_TID_NUM]; |
7c3b1dd8 | 194 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)]; |
f41ccd71 | 195 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(STA_TID_NUM)]; |
fcea6007 | 196 | /* tx */ |
0ab33703 | 197 | struct work_struct work; |
40b275b6 | 198 | struct tid_ampdu_tx __rcu *tid_tx[STA_TID_NUM]; |
ec034b20 | 199 | struct tid_ampdu_tx *tid_start_tx[STA_TID_NUM]; |
84381b4e | 200 | unsigned long last_addba_req_time[STA_TID_NUM]; |
fcea6007 JB |
201 | u8 addba_req_num[STA_TID_NUM]; |
202 | u8 dialog_token_allocator; | |
203 | }; | |
204 | ||
205 | ||
693b1bbc JB |
206 | /** |
207 | * struct sta_info - STA information | |
208 | * | |
209 | * This structure collects information about a station that | |
210 | * mac80211 is communicating with. | |
211 | * | |
212 | * @list: global linked list entry | |
213 | * @hnext: hash table linked list pointer | |
214 | * @local: pointer to the global information | |
e25cf4a6 | 215 | * @sdata: virtual interface this station belongs to |
e31b8213 JB |
216 | * @ptk: peer key negotiated with this station, if any |
217 | * @gtk: group keys negotiated with this station, if any | |
e25cf4a6 JB |
218 | * @rate_ctrl: rate control algorithm reference |
219 | * @rate_ctrl_priv: rate control private per-STA pointer | |
220 | * @last_tx_rate: rate used for last transmit, to report to userspace as | |
221 | * "the" transmit rate | |
3af6334c FF |
222 | * @last_rx_rate_idx: rx status rate index of the last data packet |
223 | * @last_rx_rate_flag: rx status flag of the last data packet | |
6ef307bc RD |
224 | * @lock: used for locking all fields that require locking, see comments |
225 | * in the header file. | |
841507f5 | 226 | * @drv_unblock_wk: used for driver PS unblocking |
e25cf4a6 | 227 | * @listen_interval: listen interval of this station, when we're acting as AP |
c2c98fde | 228 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
948d887d JB |
229 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
230 | * when it leaves power saving state or polls | |
231 | * @tx_filtered: buffers (per AC) of frames we already tried to | |
232 | * transmit but were filtered by hardware due to STA having | |
233 | * entered power saving state, these are also delivered to | |
234 | * the station when it leaves powersave or polls for frames | |
235 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on | |
693b1bbc JB |
236 | * @rx_packets: Number of MSDUs received from this STA |
237 | * @rx_bytes: Number of bytes received from this STA | |
e25cf4a6 JB |
238 | * @wep_weak_iv_count: number of weak WEP IVs received from this station |
239 | * @last_rx: time (in jiffies) when last frame was received from this STA | |
ebe27c91 | 240 | * @last_connected: time (in seconds) when a station got connected |
6ef307bc RD |
241 | * @num_duplicates: number of duplicate frames received from this STA |
242 | * @rx_fragments: number of received MPDUs | |
243 | * @rx_dropped: number of dropped MPDUs from this STA | |
244 | * @last_signal: signal of last received frame from this STA | |
541a45a1 | 245 | * @avg_signal: moving average of signal of received frames from this STA |
6ef307bc | 246 | * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
e25cf4a6 JB |
247 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
248 | * @tx_retry_failed: number of frames that failed retry | |
249 | * @tx_retry_count: total number of retries for frames to this STA | |
6ef307bc RD |
250 | * @fail_avg: moving percentage of failed MSDUs |
251 | * @tx_packets: number of RX/TX MSDUs | |
e25cf4a6 | 252 | * @tx_bytes: number of bytes transmitted to this STA |
6ef307bc | 253 | * @tx_fragments: number of transmitted MPDUs |
e25cf4a6 JB |
254 | * @tid_seq: per-TID sequence numbers for sending to this STA |
255 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 256 | * @timer_to_tid: identity mapping to ID timers |
6ef307bc RD |
257 | * @llid: Local link ID |
258 | * @plid: Peer link ID | |
259 | * @reason: Cancel reason on PLINK_HOLDING state | |
260 | * @plink_retries: Retries in establishment | |
e25cf4a6 JB |
261 | * @ignore_plink_timer: ignore the peer-link timer (used internally) |
262 | * @plink_state: peer link state | |
263 | * @plink_timeout: timeout of peer link | |
264 | * @plink_timer: peer link watch timer | |
cce4c77b | 265 | * @plink_timer_was_running: used by suspend/resume to restore timers |
6ef307bc | 266 | * @debugfs: debug filesystem info |
af818581 | 267 | * @dead: set to true when sta is unlinked |
34e89507 | 268 | * @uploaded: set to true when sta is uploaded to the driver |
99ba2a14 | 269 | * @lost_packets: number of consecutive lost packets |
2a33bee2 | 270 | * @sta: station information we share with the driver |
d9a7ddb0 | 271 | * @sta_state: duplicates information about station state (for debug) |
a85e1d55 | 272 | * @beacon_loss_count: number of times beacon loss has triggered |
693b1bbc | 273 | */ |
f0706e82 | 274 | struct sta_info { |
693b1bbc | 275 | /* General information, mostly static */ |
f0706e82 | 276 | struct list_head list; |
40b275b6 | 277 | struct sta_info __rcu *hnext; |
f0706e82 | 278 | struct ieee80211_local *local; |
d0709a65 | 279 | struct ieee80211_sub_if_data *sdata; |
40b275b6 JB |
280 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
281 | struct ieee80211_key __rcu *ptk; | |
f0706e82 JB |
282 | struct rate_control_ref *rate_ctrl; |
283 | void *rate_ctrl_priv; | |
07346f81 | 284 | spinlock_t lock; |
17741cdc | 285 | |
af818581 JB |
286 | struct work_struct drv_unblock_wk; |
287 | ||
693b1bbc | 288 | u16 listen_interval; |
f0706e82 | 289 | |
af818581 JB |
290 | bool dead; |
291 | ||
34e89507 | 292 | bool uploaded; |
693b1bbc | 293 | |
d9a7ddb0 JB |
294 | enum ieee80211_sta_state sta_state; |
295 | ||
c2c98fde JB |
296 | /* use the accessors defined below */ |
297 | unsigned long _flags; | |
693b1bbc JB |
298 | |
299 | /* | |
300 | * STA powersave frame queues, no more than the internal | |
301 | * locking required. | |
302 | */ | |
948d887d JB |
303 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
304 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; | |
305 | unsigned long driver_buffered_tids; | |
693b1bbc JB |
306 | |
307 | /* Updated from RX path only, no locking requirements */ | |
308 | unsigned long rx_packets, rx_bytes; | |
309 | unsigned long wep_weak_iv_count; | |
310 | unsigned long last_rx; | |
ebe27c91 | 311 | long last_connected; |
6ef307bc RD |
312 | unsigned long num_duplicates; |
313 | unsigned long rx_fragments; | |
314 | unsigned long rx_dropped; | |
315 | int last_signal; | |
541a45a1 | 316 | struct ewma avg_signal; |
9e26297a JB |
317 | /* Plus 1 for non-QoS frames */ |
318 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES + 1]; | |
693b1bbc JB |
319 | |
320 | /* Updated from TX status path only, no locking requirements */ | |
321 | unsigned long tx_filtered_count; | |
322 | unsigned long tx_retry_failed, tx_retry_count; | |
693b1bbc JB |
323 | /* moving percentage of failed MSDUs */ |
324 | unsigned int fail_avg; | |
325 | ||
326 | /* Updated from TX path only, no locking requirements */ | |
6ef307bc | 327 | unsigned long tx_packets; |
693b1bbc | 328 | unsigned long tx_bytes; |
6ef307bc | 329 | unsigned long tx_fragments; |
e6a9854b | 330 | struct ieee80211_tx_rate last_tx_rate; |
3af6334c FF |
331 | int last_rx_rate_idx; |
332 | int last_rx_rate_flag; | |
f591fa5d | 333 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
f0706e82 | 334 | |
d0709a65 | 335 | /* |
07346f81 | 336 | * Aggregation information, locked with lock. |
d0709a65 | 337 | */ |
5aae2880 | 338 | struct sta_ampdu_mlme ampdu_mlme; |
6ef307bc | 339 | u8 timer_to_tid[STA_TID_NUM]; |
693b1bbc | 340 | |
ee385855 | 341 | #ifdef CONFIG_MAC80211_MESH |
693b1bbc JB |
342 | /* |
343 | * Mesh peer link attributes | |
344 | * TODO: move to a sub-structure that is referenced with pointer? | |
345 | */ | |
6ef307bc RD |
346 | __le16 llid; |
347 | __le16 plid; | |
348 | __le16 reason; | |
349 | u8 plink_retries; | |
7495883b | 350 | bool ignore_plink_timer; |
5bb644a0 | 351 | bool plink_timer_was_running; |
57cf8043 | 352 | enum nl80211_plink_state plink_state; |
ee385855 LCC |
353 | u32 plink_timeout; |
354 | struct timer_list plink_timer; | |
ee385855 | 355 | #endif |
10816d40 | 356 | |
e9f207f0 JB |
357 | #ifdef CONFIG_MAC80211_DEBUGFS |
358 | struct sta_info_debugfsdentries { | |
359 | struct dentry *dir; | |
63044e9f | 360 | bool add_has_run; |
e9f207f0 JB |
361 | } debugfs; |
362 | #endif | |
17741cdc | 363 | |
99ba2a14 | 364 | unsigned int lost_packets; |
a85e1d55 | 365 | unsigned int beacon_loss_count; |
99ba2a14 | 366 | |
17741cdc JB |
367 | /* keep last! */ |
368 | struct ieee80211_sta sta; | |
f0706e82 JB |
369 | }; |
370 | ||
57cf8043 | 371 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
d6d1a5a7 JB |
372 | { |
373 | #ifdef CONFIG_MAC80211_MESH | |
374 | return sta->plink_state; | |
375 | #endif | |
57cf8043 | 376 | return NL80211_PLINK_LISTEN; |
d6d1a5a7 JB |
377 | } |
378 | ||
c2c98fde JB |
379 | static inline void set_sta_flag(struct sta_info *sta, |
380 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 381 | { |
d9a7ddb0 JB |
382 | WARN_ON(flag == WLAN_STA_AUTH || |
383 | flag == WLAN_STA_ASSOC || | |
384 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 385 | set_bit(flag, &sta->_flags); |
07346f81 JB |
386 | } |
387 | ||
c2c98fde JB |
388 | static inline void clear_sta_flag(struct sta_info *sta, |
389 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 390 | { |
d9a7ddb0 JB |
391 | WARN_ON(flag == WLAN_STA_AUTH || |
392 | flag == WLAN_STA_ASSOC || | |
393 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 394 | clear_bit(flag, &sta->_flags); |
07346f81 JB |
395 | } |
396 | ||
c2c98fde JB |
397 | static inline int test_sta_flag(struct sta_info *sta, |
398 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 399 | { |
c2c98fde | 400 | return test_bit(flag, &sta->_flags); |
07346f81 JB |
401 | } |
402 | ||
c2c98fde JB |
403 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
404 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 405 | { |
d9a7ddb0 JB |
406 | WARN_ON(flag == WLAN_STA_AUTH || |
407 | flag == WLAN_STA_ASSOC || | |
408 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 409 | return test_and_clear_bit(flag, &sta->_flags); |
07346f81 JB |
410 | } |
411 | ||
e7f4a940 JB |
412 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
413 | enum ieee80211_sta_info_flags flag) | |
414 | { | |
d9a7ddb0 JB |
415 | WARN_ON(flag == WLAN_STA_AUTH || |
416 | flag == WLAN_STA_ASSOC || | |
417 | flag == WLAN_STA_AUTHORIZED); | |
e7f4a940 JB |
418 | return test_and_set_bit(flag, &sta->_flags); |
419 | } | |
420 | ||
83d5cc01 JB |
421 | int sta_info_move_state(struct sta_info *sta, |
422 | enum ieee80211_sta_state new_state); | |
d9a7ddb0 | 423 | |
83d5cc01 JB |
424 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
425 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 426 | { |
83d5cc01 JB |
427 | int ret; |
428 | ||
429 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
430 | ||
431 | ret = sta_info_move_state(sta, new_state); | |
d9a7ddb0 JB |
432 | WARN_ON_ONCE(ret); |
433 | } | |
434 | ||
435 | ||
ec034b20 JB |
436 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
437 | struct tid_ampdu_tx *tid_tx); | |
f0706e82 | 438 | |
40b275b6 JB |
439 | static inline struct tid_ampdu_tx * |
440 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) | |
441 | { | |
442 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], | |
443 | lockdep_is_held(&sta->lock) || | |
444 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
445 | } | |
f0706e82 JB |
446 | |
447 | #define STA_HASH_SIZE 256 | |
448 | #define STA_HASH(sta) (sta[5]) | |
449 | ||
450 | ||
948d887d JB |
451 | /* Maximum number of frames to buffer per power saving station per AC */ |
452 | #define STA_MAX_TX_BUFFER 64 | |
f0706e82 JB |
453 | |
454 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
455 | * smaller than this value, the minimum value here is used instead. */ | |
456 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
457 | ||
458 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
459 | */ | |
460 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
461 | ||
d0709a65 | 462 | /* |
abe60632 | 463 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 464 | */ |
abe60632 JB |
465 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
466 | const u8 *addr); | |
467 | ||
0e5ded5a FF |
468 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
469 | const u8 *addr); | |
470 | ||
abe60632 JB |
471 | static inline |
472 | void for_each_sta_info_type_check(struct ieee80211_local *local, | |
473 | const u8 *addr, | |
474 | struct sta_info *sta, | |
475 | struct sta_info *nxt) | |
476 | { | |
477 | } | |
478 | ||
7852e361 | 479 | #define for_each_sta_info(local, _addr, _sta, nxt) \ |
abe60632 | 480 | for ( /* initialise loop */ \ |
38bdb650 FF |
481 | _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
482 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ | |
abe60632 | 483 | /* typecheck */ \ |
38bdb650 | 484 | for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
abe60632 | 485 | /* continue condition */ \ |
38bdb650 | 486 | _sta; \ |
abe60632 | 487 | /* advance loop */ \ |
38bdb650 FF |
488 | _sta = nxt, \ |
489 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ | |
abe60632 JB |
490 | ) \ |
491 | /* compare address and run code only if it matches */ \ | |
38bdb650 | 492 | if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0) |
abe60632 | 493 | |
d0709a65 JB |
494 | /* |
495 | * Get STA info by index, BROKEN! | |
496 | */ | |
3b53fde8 JB |
497 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
498 | int idx); | |
d0709a65 | 499 | /* |
73651ee6 JB |
500 | * Create a new STA info, caller owns returned structure |
501 | * until sta_info_insert(). | |
d0709a65 | 502 | */ |
73651ee6 | 503 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 504 | const u8 *addr, gfp_t gfp); |
d9a7ddb0 JB |
505 | |
506 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); | |
507 | ||
73651ee6 JB |
508 | /* |
509 | * Insert STA info into hash table/list, returns zero or a | |
510 | * -EEXIST if (if the same MAC address is already present). | |
511 | * | |
34e89507 JB |
512 | * Calling the non-rcu version makes the caller relinquish, |
513 | * the _rcu version calls read_lock_rcu() and must be called | |
514 | * without it held. | |
73651ee6 JB |
515 | */ |
516 | int sta_info_insert(struct sta_info *sta); | |
34e89507 | 517 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
34e89507 | 518 | |
83d5cc01 | 519 | int __must_check __sta_info_destroy(struct sta_info *sta); |
34e89507 JB |
520 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
521 | const u8 *addr); | |
522 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
523 | const u8 *addr); | |
f0706e82 | 524 | |
c868cb35 | 525 | void sta_info_recalc_tim(struct sta_info *sta); |
004c872e | 526 | |
d0709a65 | 527 | void sta_info_init(struct ieee80211_local *local); |
d0709a65 | 528 | void sta_info_stop(struct ieee80211_local *local); |
44213b5e | 529 | int sta_info_flush(struct ieee80211_local *local, |
af8cdcd8 | 530 | struct ieee80211_sub_if_data *sdata); |
24723d1b JB |
531 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
532 | unsigned long exp_time); | |
d0709a65 | 533 | |
af818581 JB |
534 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
535 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
47086fc5 | 536 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
af818581 | 537 | |
f0706e82 | 538 | #endif /* STA_INFO_H */ |