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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> |
888d04df | 17 | #include <linux/etherdevice.h> |
2c8dccc7 | 18 | #include "key.h" |
f0706e82 | 19 | |
238814fd JB |
20 | /** |
21 | * enum ieee80211_sta_info_flags - Stations flags | |
22 | * | |
c2c98fde JB |
23 | * These flags are used with &struct sta_info's @flags member, but |
24 | * only indirectly with set_sta_flag() and friends. | |
238814fd JB |
25 | * |
26 | * @WLAN_STA_AUTH: Station is authenticated. | |
27 | * @WLAN_STA_ASSOC: Station is associated. | |
af818581 | 28 | * @WLAN_STA_PS_STA: Station is in power-save mode |
238814fd JB |
29 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
30 | * This bit is always checked so needs to be enabled for all stations | |
31 | * when virtual port control is not in use. | |
32 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble | |
33 | * frames. | |
238814fd JB |
34 | * @WLAN_STA_WME: Station is a QoS-STA. |
35 | * @WLAN_STA_WDS: Station is one of our WDS peers. | |
d46e144b | 36 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
e039fa4a | 37 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
d46e144b | 38 | * frame to this station is transmitted. |
5394af4d | 39 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
618f356b | 40 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
098a6070 | 41 | * during suspend/resume and station removal. |
af818581 JB |
42 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
43 | * power-save mode logically to flush frames that might still | |
44 | * be in the queues | |
45 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping | |
46 | * station in power-save mode, reply when the driver unblocks. | |
941c93cd AN |
47 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
48 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct | |
49 | * packets. This means the link is enabled. | |
47086fc5 JB |
50 | * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
51 | * keeping station in power-save mode, reply when the driver | |
52 | * unblocks the station. | |
53 | * @WLAN_STA_SP: Station is in a service period, so don't try to | |
deeaee19 | 54 | * reply to other uAPSD trigger frames or PS-Poll. |
e7f4a940 | 55 | * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
83d5cc01 | 56 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
e1936e94 | 57 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
dbf498fb | 58 | * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
3f52b7e3 MP |
59 | * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period. |
60 | * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP. | |
5ac2e350 JB |
61 | * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX |
62 | * until pending frames are delivered | |
238814fd JB |
63 | */ |
64 | enum ieee80211_sta_info_flags { | |
c2c98fde JB |
65 | WLAN_STA_AUTH, |
66 | WLAN_STA_ASSOC, | |
67 | WLAN_STA_PS_STA, | |
68 | WLAN_STA_AUTHORIZED, | |
69 | WLAN_STA_SHORT_PREAMBLE, | |
c2c98fde JB |
70 | WLAN_STA_WME, |
71 | WLAN_STA_WDS, | |
72 | WLAN_STA_CLEAR_PS_FILT, | |
73 | WLAN_STA_MFP, | |
74 | WLAN_STA_BLOCK_BA, | |
75 | WLAN_STA_PS_DRIVER, | |
76 | WLAN_STA_PSPOLL, | |
77 | WLAN_STA_TDLS_PEER, | |
78 | WLAN_STA_TDLS_PEER_AUTH, | |
79 | WLAN_STA_UAPSD, | |
80 | WLAN_STA_SP, | |
e7f4a940 | 81 | WLAN_STA_4ADDR_EVENT, |
83d5cc01 | 82 | WLAN_STA_INSERTED, |
e1936e94 | 83 | WLAN_STA_RATE_CONTROL, |
dbf498fb | 84 | WLAN_STA_TOFFSET_KNOWN, |
3f52b7e3 MP |
85 | WLAN_STA_MPSP_OWNER, |
86 | WLAN_STA_MPSP_RECIPIENT, | |
5ac2e350 | 87 | WLAN_STA_PS_DELIVER, |
238814fd | 88 | }; |
d9a7ddb0 | 89 | |
5aae2880 | 90 | #define ADDBA_RESP_INTERVAL HZ |
84381b4e NM |
91 | #define HT_AGG_MAX_RETRIES 15 |
92 | #define HT_AGG_BURST_RETRIES 3 | |
93 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) | |
5aae2880 | 94 | |
a622ab72 JB |
95 | #define HT_AGG_STATE_DRV_READY 0 |
96 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
97 | #define HT_AGG_STATE_OPERATIONAL 2 | |
98 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
99 | #define HT_AGG_STATE_WANT_START 4 |
100 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 | 101 | |
c82c4a80 JB |
102 | enum ieee80211_agg_stop_reason { |
103 | AGG_STOP_DECLINED, | |
104 | AGG_STOP_LOCAL_REQUEST, | |
105 | AGG_STOP_PEER_REQUEST, | |
106 | AGG_STOP_DESTROY_STA, | |
107 | }; | |
108 | ||
80656c20 RR |
109 | /** |
110 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
111 | * | |
a622ab72 | 112 | * @rcu_head: rcu head for freeing structure |
285fa695 | 113 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
80656c20 | 114 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 115 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 116 | * @dialog_token: dialog token for aggregation session |
bd2ce6e4 | 117 | * @timeout: session timeout value to be filled in ADDBA requests |
a622ab72 | 118 | * @state: session state (see above) |
12d3952f | 119 | * @last_tx: jiffies of last tx activity |
a622ab72 | 120 | * @stop_initiator: initiator of a session stop |
53f73c09 | 121 | * @tx_stop: TX DelBA frame when stopping |
0b01f030 | 122 | * @buf_size: reorder buffer size at receiver |
f0425bed FF |
123 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
124 | * @bar_pending: BAR needs to be re-sent | |
a622ab72 | 125 | * |
dd318575 JB |
126 | * This structure's lifetime is managed by RCU, assignments to |
127 | * the array holding it must hold the aggregation mutex. | |
128 | * | |
129 | * The TX path can access it under RCU lock-free if, and | |
130 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL | |
131 | * set. Otherwise, the TX path must also acquire the spinlock | |
132 | * and re-check the state, see comments in the tx code | |
133 | * touching it. | |
80656c20 RR |
134 | */ |
135 | struct tid_ampdu_tx { | |
a622ab72 | 136 | struct rcu_head rcu_head; |
285fa695 | 137 | struct timer_list session_timer; |
80656c20 | 138 | struct timer_list addba_resp_timer; |
cd8ffc80 | 139 | struct sk_buff_head pending; |
a622ab72 | 140 | unsigned long state; |
12d3952f | 141 | unsigned long last_tx; |
bd2ce6e4 | 142 | u16 timeout; |
cee24a3e | 143 | u8 dialog_token; |
a622ab72 | 144 | u8 stop_initiator; |
53f73c09 | 145 | bool tx_stop; |
0b01f030 | 146 | u8 buf_size; |
f0425bed FF |
147 | |
148 | u16 failed_bar_ssn; | |
149 | bool bar_pending; | |
80656c20 | 150 | }; |
5aae2880 RR |
151 | |
152 | /** | |
153 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
154 | * | |
5aae2880 | 155 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
4d050f1d | 156 | * @reorder_time: jiffies when skb was added |
5aae2880 | 157 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 158 | * @reorder_timer: releases expired frames from the reorder buffer. |
12d3952f | 159 | * @last_rx: jiffies of last rx activity |
056cdd59 JB |
160 | * @head_seq_num: head sequence number in reordering buffer. |
161 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
162 | * @ssn: Starting Sequence Number expected to be aggregated. |
163 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 164 | * @timeout: reset timer value (in TUs). |
cee24a3e | 165 | * @dialog_token: dialog token for aggregation session |
a87f736d | 166 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 167 | * @reorder_lock: serializes access to reorder buffer, see below. |
a87f736d | 168 | * |
dd318575 JB |
169 | * This structure's lifetime is managed by RCU, assignments to |
170 | * the array holding it must hold the aggregation mutex. | |
2bff8ebf | 171 | * |
dd318575 JB |
172 | * The @reorder_lock is used to protect the members of this |
173 | * struct, except for @timeout, @buf_size and @dialog_token, | |
174 | * which are constant across the lifetime of the struct (the | |
175 | * dialog token being used only for debugging). | |
5aae2880 RR |
176 | */ |
177 | struct tid_ampdu_rx { | |
a87f736d | 178 | struct rcu_head rcu_head; |
2bff8ebf | 179 | spinlock_t reorder_lock; |
5aae2880 | 180 | struct sk_buff **reorder_buf; |
4d050f1d | 181 | unsigned long *reorder_time; |
5aae2880 | 182 | struct timer_list session_timer; |
2bff8ebf | 183 | struct timer_list reorder_timer; |
12d3952f | 184 | unsigned long last_rx; |
056cdd59 JB |
185 | u16 head_seq_num; |
186 | u16 stored_mpdu_num; | |
cee24a3e RR |
187 | u16 ssn; |
188 | u16 buf_size; | |
189 | u16 timeout; | |
190 | u8 dialog_token; | |
5aae2880 RR |
191 | }; |
192 | ||
fcea6007 JB |
193 | /** |
194 | * struct sta_ampdu_mlme - STA aggregation information. | |
195 | * | |
a87f736d | 196 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
fcea6007 | 197 | * @tid_tx: aggregation info for Tx per TID |
ec034b20 | 198 | * @tid_start_tx: sessions where start was requested |
fcea6007 | 199 | * @addba_req_num: number of times addBA request has been sent. |
84381b4e | 200 | * @last_addba_req_time: timestamp of the last addBA request. |
fcea6007 | 201 | * @dialog_token_allocator: dialog token enumerator for each new session; |
0ab33703 | 202 | * @work: work struct for starting/stopping aggregation |
7c3b1dd8 JB |
203 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
204 | * RX timer expired until the work for it runs | |
f41ccd71 SL |
205 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
206 | * driver requested to close until the work for it runs | |
a93e3644 JB |
207 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
208 | * to tid_tx[idx], which are protected by the sta spinlock) | |
e562078a | 209 | * tid_start_tx is also protected by sta->lock. |
fcea6007 JB |
210 | */ |
211 | struct sta_ampdu_mlme { | |
a93e3644 | 212 | struct mutex mtx; |
fcea6007 | 213 | /* rx */ |
5a306f58 JB |
214 | struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
215 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
216 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
fcea6007 | 217 | /* tx */ |
0ab33703 | 218 | struct work_struct work; |
5a306f58 JB |
219 | struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
220 | struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; | |
221 | unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; | |
222 | u8 addba_req_num[IEEE80211_NUM_TIDS]; | |
fcea6007 JB |
223 | u8 dialog_token_allocator; |
224 | }; | |
225 | ||
ad38bfc9 MG |
226 | /* |
227 | * struct ieee80211_tx_latency_stat - Tx latency statistics | |
228 | * | |
229 | * Measures TX latency and jitter for a station per TID. | |
230 | * | |
231 | * @max: worst case latency | |
232 | * @sum: sum of all latencies | |
233 | * @counter: amount of Tx frames sent from interface | |
234 | * @bins: each bin counts how many frames transmitted within a certain | |
235 | * latency range. when disabled it is NULL. | |
236 | * @bin_count: amount of bins. | |
237 | */ | |
238 | struct ieee80211_tx_latency_stat { | |
239 | u32 max; | |
240 | u32 sum; | |
241 | u32 counter; | |
242 | u32 *bins; | |
243 | u32 bin_count; | |
244 | }; | |
fcea6007 | 245 | |
693b1bbc JB |
246 | /** |
247 | * struct sta_info - STA information | |
248 | * | |
249 | * This structure collects information about a station that | |
250 | * mac80211 is communicating with. | |
251 | * | |
252 | * @list: global linked list entry | |
d778207b | 253 | * @free_list: list entry for keeping track of stations to free |
693b1bbc JB |
254 | * @hnext: hash table linked list pointer |
255 | * @local: pointer to the global information | |
e25cf4a6 | 256 | * @sdata: virtual interface this station belongs to |
2475b1cc MS |
257 | * @ptk: peer keys negotiated with this station, if any |
258 | * @ptk_idx: last installed peer key index | |
e31b8213 | 259 | * @gtk: group keys negotiated with this station, if any |
2475b1cc | 260 | * @gtk_idx: last installed group key index |
e25cf4a6 JB |
261 | * @rate_ctrl: rate control algorithm reference |
262 | * @rate_ctrl_priv: rate control private per-STA pointer | |
263 | * @last_tx_rate: rate used for last transmit, to report to userspace as | |
264 | * "the" transmit rate | |
3af6334c FF |
265 | * @last_rx_rate_idx: rx status rate index of the last data packet |
266 | * @last_rx_rate_flag: rx status flag of the last data packet | |
1b8d242a | 267 | * @last_rx_rate_vht_flag: rx status vht flag of the last data packet |
5614618e | 268 | * @last_rx_rate_vht_nss: rx status nss of last data packet |
6ef307bc RD |
269 | * @lock: used for locking all fields that require locking, see comments |
270 | * in the header file. | |
5ac2e350 | 271 | * @drv_deliver_wk: used for delivering frames after driver PS unblocking |
e25cf4a6 | 272 | * @listen_interval: listen interval of this station, when we're acting as AP |
c2c98fde | 273 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
1d147bfa | 274 | * @ps_lock: used for powersave (when mac80211 is the AP) related locking |
948d887d JB |
275 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
276 | * when it leaves power saving state or polls | |
277 | * @tx_filtered: buffers (per AC) of frames we already tried to | |
278 | * transmit but were filtered by hardware due to STA having | |
279 | * entered power saving state, these are also delivered to | |
280 | * the station when it leaves powersave or polls for frames | |
281 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on | |
693b1bbc JB |
282 | * @rx_packets: Number of MSDUs received from this STA |
283 | * @rx_bytes: Number of bytes received from this STA | |
e25cf4a6 JB |
284 | * @wep_weak_iv_count: number of weak WEP IVs received from this station |
285 | * @last_rx: time (in jiffies) when last frame was received from this STA | |
ebe27c91 | 286 | * @last_connected: time (in seconds) when a station got connected |
6ef307bc RD |
287 | * @num_duplicates: number of duplicate frames received from this STA |
288 | * @rx_fragments: number of received MPDUs | |
289 | * @rx_dropped: number of dropped MPDUs from this STA | |
290 | * @last_signal: signal of last received frame from this STA | |
541a45a1 | 291 | * @avg_signal: moving average of signal of received frames from this STA |
db94357d | 292 | * @last_ack_signal: signal of last received Ack frame from this STA |
6ef307bc | 293 | * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
e25cf4a6 JB |
294 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
295 | * @tx_retry_failed: number of frames that failed retry | |
296 | * @tx_retry_count: total number of retries for frames to this STA | |
6ef307bc RD |
297 | * @fail_avg: moving percentage of failed MSDUs |
298 | * @tx_packets: number of RX/TX MSDUs | |
e25cf4a6 | 299 | * @tx_bytes: number of bytes transmitted to this STA |
6ef307bc | 300 | * @tx_fragments: number of transmitted MPDUs |
e25cf4a6 JB |
301 | * @tid_seq: per-TID sequence numbers for sending to this STA |
302 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 303 | * @timer_to_tid: identity mapping to ID timers |
ad38bfc9 | 304 | * @tx_lat: Tx latency statistics |
6ef307bc RD |
305 | * @llid: Local link ID |
306 | * @plid: Peer link ID | |
307 | * @reason: Cancel reason on PLINK_HOLDING state | |
308 | * @plink_retries: Retries in establishment | |
e25cf4a6 JB |
309 | * @ignore_plink_timer: ignore the peer-link timer (used internally) |
310 | * @plink_state: peer link state | |
311 | * @plink_timeout: timeout of peer link | |
312 | * @plink_timer: peer link watch timer | |
dbf498fb | 313 | * @t_offset: timing offset relative to this host |
1dd45581 AN |
314 | * @t_offset_setpoint: reference timing offset of this sta to be used when |
315 | * calculating clockdrift | |
3f52b7e3 MP |
316 | * @local_pm: local link-specific power save mode |
317 | * @peer_pm: peer-specific power save mode towards local STA | |
318 | * @nonpeer_pm: STA power save mode towards non-peer neighbors | |
6ef307bc | 319 | * @debugfs: debug filesystem info |
af818581 | 320 | * @dead: set to true when sta is unlinked |
34e89507 | 321 | * @uploaded: set to true when sta is uploaded to the driver |
99ba2a14 | 322 | * @lost_packets: number of consecutive lost packets |
2a33bee2 | 323 | * @sta: station information we share with the driver |
d9a7ddb0 | 324 | * @sta_state: duplicates information about station state (for debug) |
a85e1d55 | 325 | * @beacon_loss_count: number of times beacon loss has triggered |
077f897a | 326 | * @rcu_head: RCU head used for freeing this station struct |
0af83d3d JB |
327 | * @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
328 | * taken from HT/VHT capabilities or VHT operating mode notification | |
780b40df JB |
329 | * @chains: chains ever used for RX from this station |
330 | * @chain_signal_last: last signal (per chain) | |
331 | * @chain_signal_avg: signal average (per chain) | |
687da132 EG |
332 | * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
333 | * AP only. | |
2475b1cc | 334 | * @cipher_scheme: optional cipher scheme for this station |
693b1bbc | 335 | */ |
f0706e82 | 336 | struct sta_info { |
693b1bbc | 337 | /* General information, mostly static */ |
d778207b | 338 | struct list_head list, free_list; |
b22cfcfc | 339 | struct rcu_head rcu_head; |
40b275b6 | 340 | struct sta_info __rcu *hnext; |
f0706e82 | 341 | struct ieee80211_local *local; |
d0709a65 | 342 | struct ieee80211_sub_if_data *sdata; |
40b275b6 | 343 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
2475b1cc MS |
344 | struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
345 | u8 gtk_idx; | |
346 | u8 ptk_idx; | |
f0706e82 JB |
347 | struct rate_control_ref *rate_ctrl; |
348 | void *rate_ctrl_priv; | |
07346f81 | 349 | spinlock_t lock; |
17741cdc | 350 | |
5ac2e350 | 351 | struct work_struct drv_deliver_wk; |
af818581 | 352 | |
693b1bbc | 353 | u16 listen_interval; |
f0706e82 | 354 | |
af818581 JB |
355 | bool dead; |
356 | ||
34e89507 | 357 | bool uploaded; |
693b1bbc | 358 | |
d9a7ddb0 JB |
359 | enum ieee80211_sta_state sta_state; |
360 | ||
c2c98fde JB |
361 | /* use the accessors defined below */ |
362 | unsigned long _flags; | |
693b1bbc | 363 | |
1d147bfa EG |
364 | /* STA powersave lock and frame queues */ |
365 | spinlock_t ps_lock; | |
948d887d JB |
366 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
367 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; | |
368 | unsigned long driver_buffered_tids; | |
693b1bbc JB |
369 | |
370 | /* Updated from RX path only, no locking requirements */ | |
560d2682 JB |
371 | unsigned long rx_packets; |
372 | u64 rx_bytes; | |
693b1bbc JB |
373 | unsigned long wep_weak_iv_count; |
374 | unsigned long last_rx; | |
ebe27c91 | 375 | long last_connected; |
6ef307bc RD |
376 | unsigned long num_duplicates; |
377 | unsigned long rx_fragments; | |
378 | unsigned long rx_dropped; | |
379 | int last_signal; | |
541a45a1 | 380 | struct ewma avg_signal; |
db94357d | 381 | int last_ack_signal; |
ef0621e8 FF |
382 | |
383 | u8 chains; | |
384 | s8 chain_signal_last[IEEE80211_MAX_CHAINS]; | |
385 | struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS]; | |
386 | ||
9e26297a | 387 | /* Plus 1 for non-QoS frames */ |
5a306f58 | 388 | __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
693b1bbc JB |
389 | |
390 | /* Updated from TX status path only, no locking requirements */ | |
391 | unsigned long tx_filtered_count; | |
392 | unsigned long tx_retry_failed, tx_retry_count; | |
693b1bbc JB |
393 | /* moving percentage of failed MSDUs */ |
394 | unsigned int fail_avg; | |
395 | ||
396 | /* Updated from TX path only, no locking requirements */ | |
560d2682 JB |
397 | u32 tx_fragments; |
398 | u64 tx_packets[IEEE80211_NUM_ACS]; | |
399 | u64 tx_bytes[IEEE80211_NUM_ACS]; | |
e6a9854b | 400 | struct ieee80211_tx_rate last_tx_rate; |
3af6334c | 401 | int last_rx_rate_idx; |
5614618e | 402 | u32 last_rx_rate_flag; |
1b8d242a | 403 | u32 last_rx_rate_vht_flag; |
5614618e | 404 | u8 last_rx_rate_vht_nss; |
f591fa5d | 405 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
f0706e82 | 406 | |
d0709a65 | 407 | /* |
07346f81 | 408 | * Aggregation information, locked with lock. |
d0709a65 | 409 | */ |
5aae2880 | 410 | struct sta_ampdu_mlme ampdu_mlme; |
5a306f58 | 411 | u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
693b1bbc | 412 | |
ad38bfc9 MG |
413 | struct ieee80211_tx_latency_stat *tx_lat; |
414 | ||
ee385855 | 415 | #ifdef CONFIG_MAC80211_MESH |
693b1bbc JB |
416 | /* |
417 | * Mesh peer link attributes | |
418 | * TODO: move to a sub-structure that is referenced with pointer? | |
419 | */ | |
6f101ef0 CYY |
420 | u16 llid; |
421 | u16 plid; | |
422 | u16 reason; | |
6ef307bc | 423 | u8 plink_retries; |
7495883b | 424 | bool ignore_plink_timer; |
57cf8043 | 425 | enum nl80211_plink_state plink_state; |
ee385855 LCC |
426 | u32 plink_timeout; |
427 | struct timer_list plink_timer; | |
dbf498fb JC |
428 | s64 t_offset; |
429 | s64 t_offset_setpoint; | |
3f52b7e3 MP |
430 | /* mesh power save */ |
431 | enum nl80211_mesh_power_mode local_pm; | |
432 | enum nl80211_mesh_power_mode peer_pm; | |
433 | enum nl80211_mesh_power_mode nonpeer_pm; | |
ee385855 | 434 | #endif |
10816d40 | 435 | |
e9f207f0 JB |
436 | #ifdef CONFIG_MAC80211_DEBUGFS |
437 | struct sta_info_debugfsdentries { | |
438 | struct dentry *dir; | |
63044e9f | 439 | bool add_has_run; |
e9f207f0 JB |
440 | } debugfs; |
441 | #endif | |
17741cdc | 442 | |
0af83d3d JB |
443 | enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
444 | ||
99ba2a14 | 445 | unsigned int lost_packets; |
a85e1d55 | 446 | unsigned int beacon_loss_count; |
99ba2a14 | 447 | |
687da132 | 448 | enum ieee80211_smps_mode known_smps_mode; |
2475b1cc | 449 | const struct ieee80211_cipher_scheme *cipher_scheme; |
687da132 | 450 | |
17741cdc JB |
451 | /* keep last! */ |
452 | struct ieee80211_sta sta; | |
f0706e82 JB |
453 | }; |
454 | ||
57cf8043 | 455 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
d6d1a5a7 JB |
456 | { |
457 | #ifdef CONFIG_MAC80211_MESH | |
458 | return sta->plink_state; | |
459 | #endif | |
57cf8043 | 460 | return NL80211_PLINK_LISTEN; |
d6d1a5a7 JB |
461 | } |
462 | ||
c2c98fde JB |
463 | static inline void set_sta_flag(struct sta_info *sta, |
464 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 465 | { |
d9a7ddb0 JB |
466 | WARN_ON(flag == WLAN_STA_AUTH || |
467 | flag == WLAN_STA_ASSOC || | |
468 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 469 | set_bit(flag, &sta->_flags); |
07346f81 JB |
470 | } |
471 | ||
c2c98fde JB |
472 | static inline void clear_sta_flag(struct sta_info *sta, |
473 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 474 | { |
d9a7ddb0 JB |
475 | WARN_ON(flag == WLAN_STA_AUTH || |
476 | flag == WLAN_STA_ASSOC || | |
477 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 478 | clear_bit(flag, &sta->_flags); |
07346f81 JB |
479 | } |
480 | ||
c2c98fde JB |
481 | static inline int test_sta_flag(struct sta_info *sta, |
482 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 483 | { |
c2c98fde | 484 | return test_bit(flag, &sta->_flags); |
07346f81 JB |
485 | } |
486 | ||
c2c98fde JB |
487 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
488 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 489 | { |
d9a7ddb0 JB |
490 | WARN_ON(flag == WLAN_STA_AUTH || |
491 | flag == WLAN_STA_ASSOC || | |
492 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 493 | return test_and_clear_bit(flag, &sta->_flags); |
07346f81 JB |
494 | } |
495 | ||
e7f4a940 JB |
496 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
497 | enum ieee80211_sta_info_flags flag) | |
498 | { | |
d9a7ddb0 JB |
499 | WARN_ON(flag == WLAN_STA_AUTH || |
500 | flag == WLAN_STA_ASSOC || | |
501 | flag == WLAN_STA_AUTHORIZED); | |
e7f4a940 JB |
502 | return test_and_set_bit(flag, &sta->_flags); |
503 | } | |
504 | ||
83d5cc01 JB |
505 | int sta_info_move_state(struct sta_info *sta, |
506 | enum ieee80211_sta_state new_state); | |
d9a7ddb0 | 507 | |
83d5cc01 JB |
508 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
509 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 510 | { |
83d5cc01 JB |
511 | int ret; |
512 | ||
513 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
514 | ||
515 | ret = sta_info_move_state(sta, new_state); | |
d9a7ddb0 JB |
516 | WARN_ON_ONCE(ret); |
517 | } | |
518 | ||
519 | ||
ec034b20 JB |
520 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
521 | struct tid_ampdu_tx *tid_tx); | |
f0706e82 | 522 | |
40b275b6 JB |
523 | static inline struct tid_ampdu_tx * |
524 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) | |
525 | { | |
526 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], | |
527 | lockdep_is_held(&sta->lock) || | |
528 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
529 | } | |
f0706e82 JB |
530 | |
531 | #define STA_HASH_SIZE 256 | |
532 | #define STA_HASH(sta) (sta[5]) | |
533 | ||
534 | ||
948d887d JB |
535 | /* Maximum number of frames to buffer per power saving station per AC */ |
536 | #define STA_MAX_TX_BUFFER 64 | |
f0706e82 JB |
537 | |
538 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
539 | * smaller than this value, the minimum value here is used instead. */ | |
540 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
541 | ||
542 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
543 | */ | |
544 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
545 | ||
d0709a65 | 546 | /* |
abe60632 | 547 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 548 | */ |
abe60632 JB |
549 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
550 | const u8 *addr); | |
551 | ||
0e5ded5a FF |
552 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
553 | const u8 *addr); | |
554 | ||
abe60632 JB |
555 | static inline |
556 | void for_each_sta_info_type_check(struct ieee80211_local *local, | |
557 | const u8 *addr, | |
558 | struct sta_info *sta, | |
559 | struct sta_info *nxt) | |
560 | { | |
561 | } | |
562 | ||
7852e361 | 563 | #define for_each_sta_info(local, _addr, _sta, nxt) \ |
abe60632 | 564 | for ( /* initialise loop */ \ |
38bdb650 FF |
565 | _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
566 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ | |
abe60632 | 567 | /* typecheck */ \ |
38bdb650 | 568 | for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
abe60632 | 569 | /* continue condition */ \ |
38bdb650 | 570 | _sta; \ |
abe60632 | 571 | /* advance loop */ \ |
38bdb650 FF |
572 | _sta = nxt, \ |
573 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ | |
abe60632 JB |
574 | ) \ |
575 | /* compare address and run code only if it matches */ \ | |
3bc7945e | 576 | if (ether_addr_equal(_sta->sta.addr, (_addr))) |
abe60632 | 577 | |
d0709a65 JB |
578 | /* |
579 | * Get STA info by index, BROKEN! | |
580 | */ | |
3b53fde8 JB |
581 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
582 | int idx); | |
d0709a65 | 583 | /* |
73651ee6 JB |
584 | * Create a new STA info, caller owns returned structure |
585 | * until sta_info_insert(). | |
d0709a65 | 586 | */ |
73651ee6 | 587 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 588 | const u8 *addr, gfp_t gfp); |
d9a7ddb0 JB |
589 | |
590 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); | |
591 | ||
73651ee6 JB |
592 | /* |
593 | * Insert STA info into hash table/list, returns zero or a | |
594 | * -EEXIST if (if the same MAC address is already present). | |
595 | * | |
34e89507 JB |
596 | * Calling the non-rcu version makes the caller relinquish, |
597 | * the _rcu version calls read_lock_rcu() and must be called | |
598 | * without it held. | |
73651ee6 JB |
599 | */ |
600 | int sta_info_insert(struct sta_info *sta); | |
34e89507 | 601 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
34e89507 | 602 | |
83d5cc01 | 603 | int __must_check __sta_info_destroy(struct sta_info *sta); |
34e89507 JB |
604 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
605 | const u8 *addr); | |
606 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
607 | const u8 *addr); | |
f0706e82 | 608 | |
c868cb35 | 609 | void sta_info_recalc_tim(struct sta_info *sta); |
004c872e | 610 | |
d0709a65 | 611 | void sta_info_init(struct ieee80211_local *local); |
d0709a65 | 612 | void sta_info_stop(struct ieee80211_local *local); |
051007d9 JB |
613 | |
614 | /** | |
615 | * sta_info_flush - flush matching STA entries from the STA table | |
616 | * | |
617 | * Returns the number of removed STA entries. | |
618 | * | |
619 | * @sdata: sdata to remove all stations from | |
e716251d | 620 | * @vlans: if the given interface is an AP interface, also flush VLANs |
051007d9 | 621 | */ |
e716251d JB |
622 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
623 | ||
624 | static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) | |
625 | { | |
626 | return __sta_info_flush(sdata, false); | |
627 | } | |
051007d9 | 628 | |
6b62bf32 TP |
629 | void sta_set_rate_info_tx(struct sta_info *sta, |
630 | const struct ieee80211_tx_rate *rate, | |
631 | struct rate_info *rinfo); | |
003e676a S |
632 | void sta_set_rate_info_rx(struct sta_info *sta, |
633 | struct rate_info *rinfo); | |
24723d1b JB |
634 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
635 | unsigned long exp_time); | |
687da132 | 636 | u8 sta_info_tx_streams(struct sta_info *sta); |
d0709a65 | 637 | |
af818581 JB |
638 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
639 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
47086fc5 | 640 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
af818581 | 641 | |
f0706e82 | 642 | #endif /* STA_INFO_H */ |