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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Devicescape Software, Inc. | |
d98ad83e | 3 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
412a6d80 | 4 | * Copyright(c) 2015 Intel Deutschland GmbH |
f0706e82 JB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #ifndef STA_INFO_H | |
12 | #define STA_INFO_H | |
13 | ||
14 | #include <linux/list.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/if_ether.h> | |
af818581 | 17 | #include <linux/workqueue.h> |
541a45a1 | 18 | #include <linux/average.h> |
888d04df | 19 | #include <linux/etherdevice.h> |
7bedd0cf | 20 | #include <linux/rhashtable.h> |
2c8dccc7 | 21 | #include "key.h" |
f0706e82 | 22 | |
238814fd JB |
23 | /** |
24 | * enum ieee80211_sta_info_flags - Stations flags | |
25 | * | |
c2c98fde JB |
26 | * These flags are used with &struct sta_info's @flags member, but |
27 | * only indirectly with set_sta_flag() and friends. | |
238814fd JB |
28 | * |
29 | * @WLAN_STA_AUTH: Station is authenticated. | |
30 | * @WLAN_STA_ASSOC: Station is associated. | |
af818581 | 31 | * @WLAN_STA_PS_STA: Station is in power-save mode |
238814fd JB |
32 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
33 | * This bit is always checked so needs to be enabled for all stations | |
34 | * when virtual port control is not in use. | |
35 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble | |
36 | * frames. | |
238814fd | 37 | * @WLAN_STA_WDS: Station is one of our WDS peers. |
d46e144b | 38 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
e039fa4a | 39 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
d46e144b | 40 | * frame to this station is transmitted. |
5394af4d | 41 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
618f356b | 42 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
098a6070 | 43 | * during suspend/resume and station removal. |
af818581 JB |
44 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
45 | * power-save mode logically to flush frames that might still | |
46 | * be in the queues | |
47 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping | |
48 | * station in power-save mode, reply when the driver unblocks. | |
941c93cd AN |
49 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
50 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct | |
51 | * packets. This means the link is enabled. | |
626911cc AN |
52 | * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this |
53 | * station. | |
9041c1fa | 54 | * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching |
a7a6bdd0 AN |
55 | * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this |
56 | * TDLS peer | |
b98fb44f AN |
57 | * @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on |
58 | * the BSS base channel. | |
47086fc5 JB |
59 | * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
60 | * keeping station in power-save mode, reply when the driver | |
61 | * unblocks the station. | |
62 | * @WLAN_STA_SP: Station is in a service period, so don't try to | |
deeaee19 | 63 | * reply to other uAPSD trigger frames or PS-Poll. |
e7f4a940 | 64 | * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
83d5cc01 | 65 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
e1936e94 | 66 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
dbf498fb | 67 | * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
3f52b7e3 MP |
68 | * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period. |
69 | * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP. | |
5ac2e350 JB |
70 | * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX |
71 | * until pending frames are delivered | |
c84387d2 JB |
72 | * |
73 | * @NUM_WLAN_STA_FLAGS: number of defined flags | |
238814fd JB |
74 | */ |
75 | enum ieee80211_sta_info_flags { | |
c2c98fde JB |
76 | WLAN_STA_AUTH, |
77 | WLAN_STA_ASSOC, | |
78 | WLAN_STA_PS_STA, | |
79 | WLAN_STA_AUTHORIZED, | |
80 | WLAN_STA_SHORT_PREAMBLE, | |
c2c98fde JB |
81 | WLAN_STA_WDS, |
82 | WLAN_STA_CLEAR_PS_FILT, | |
83 | WLAN_STA_MFP, | |
84 | WLAN_STA_BLOCK_BA, | |
85 | WLAN_STA_PS_DRIVER, | |
86 | WLAN_STA_PSPOLL, | |
87 | WLAN_STA_TDLS_PEER, | |
88 | WLAN_STA_TDLS_PEER_AUTH, | |
626911cc | 89 | WLAN_STA_TDLS_INITIATOR, |
9041c1fa | 90 | WLAN_STA_TDLS_CHAN_SWITCH, |
a7a6bdd0 | 91 | WLAN_STA_TDLS_OFF_CHANNEL, |
b98fb44f | 92 | WLAN_STA_TDLS_WIDER_BW, |
c2c98fde JB |
93 | WLAN_STA_UAPSD, |
94 | WLAN_STA_SP, | |
e7f4a940 | 95 | WLAN_STA_4ADDR_EVENT, |
83d5cc01 | 96 | WLAN_STA_INSERTED, |
e1936e94 | 97 | WLAN_STA_RATE_CONTROL, |
dbf498fb | 98 | WLAN_STA_TOFFSET_KNOWN, |
3f52b7e3 MP |
99 | WLAN_STA_MPSP_OWNER, |
100 | WLAN_STA_MPSP_RECIPIENT, | |
5ac2e350 | 101 | WLAN_STA_PS_DELIVER, |
c84387d2 JB |
102 | |
103 | NUM_WLAN_STA_FLAGS, | |
238814fd | 104 | }; |
d9a7ddb0 | 105 | |
5aae2880 | 106 | #define ADDBA_RESP_INTERVAL HZ |
84381b4e NM |
107 | #define HT_AGG_MAX_RETRIES 15 |
108 | #define HT_AGG_BURST_RETRIES 3 | |
109 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) | |
5aae2880 | 110 | |
a622ab72 JB |
111 | #define HT_AGG_STATE_DRV_READY 0 |
112 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
113 | #define HT_AGG_STATE_OPERATIONAL 2 | |
114 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
115 | #define HT_AGG_STATE_WANT_START 4 |
116 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 | 117 | |
c82c4a80 JB |
118 | enum ieee80211_agg_stop_reason { |
119 | AGG_STOP_DECLINED, | |
120 | AGG_STOP_LOCAL_REQUEST, | |
121 | AGG_STOP_PEER_REQUEST, | |
122 | AGG_STOP_DESTROY_STA, | |
123 | }; | |
124 | ||
80656c20 RR |
125 | /** |
126 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
127 | * | |
a622ab72 | 128 | * @rcu_head: rcu head for freeing structure |
285fa695 | 129 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
80656c20 | 130 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 131 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 132 | * @dialog_token: dialog token for aggregation session |
bd2ce6e4 | 133 | * @timeout: session timeout value to be filled in ADDBA requests |
a622ab72 | 134 | * @state: session state (see above) |
12d3952f | 135 | * @last_tx: jiffies of last tx activity |
a622ab72 | 136 | * @stop_initiator: initiator of a session stop |
53f73c09 | 137 | * @tx_stop: TX DelBA frame when stopping |
0b01f030 | 138 | * @buf_size: reorder buffer size at receiver |
f0425bed FF |
139 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
140 | * @bar_pending: BAR needs to be re-sent | |
e3abc8ff | 141 | * @amsdu: support A-MSDU withing A-MDPU |
a622ab72 | 142 | * |
dd318575 JB |
143 | * This structure's lifetime is managed by RCU, assignments to |
144 | * the array holding it must hold the aggregation mutex. | |
145 | * | |
146 | * The TX path can access it under RCU lock-free if, and | |
147 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL | |
148 | * set. Otherwise, the TX path must also acquire the spinlock | |
149 | * and re-check the state, see comments in the tx code | |
150 | * touching it. | |
80656c20 RR |
151 | */ |
152 | struct tid_ampdu_tx { | |
a622ab72 | 153 | struct rcu_head rcu_head; |
285fa695 | 154 | struct timer_list session_timer; |
80656c20 | 155 | struct timer_list addba_resp_timer; |
cd8ffc80 | 156 | struct sk_buff_head pending; |
a622ab72 | 157 | unsigned long state; |
12d3952f | 158 | unsigned long last_tx; |
bd2ce6e4 | 159 | u16 timeout; |
cee24a3e | 160 | u8 dialog_token; |
a622ab72 | 161 | u8 stop_initiator; |
53f73c09 | 162 | bool tx_stop; |
0b01f030 | 163 | u8 buf_size; |
f0425bed FF |
164 | |
165 | u16 failed_bar_ssn; | |
166 | bool bar_pending; | |
e3abc8ff | 167 | bool amsdu; |
80656c20 | 168 | }; |
5aae2880 RR |
169 | |
170 | /** | |
171 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
172 | * | |
83eb935e MK |
173 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an |
174 | * A-MSDU with individually reported subframes. | |
06470f74 SS |
175 | * @reorder_buf_filtered: bitmap indicating where there are filtered frames in |
176 | * the reorder buffer that should be ignored when releasing frames | |
4d050f1d | 177 | * @reorder_time: jiffies when skb was added |
5aae2880 | 178 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 179 | * @reorder_timer: releases expired frames from the reorder buffer. |
12d3952f | 180 | * @last_rx: jiffies of last rx activity |
056cdd59 JB |
181 | * @head_seq_num: head sequence number in reordering buffer. |
182 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
183 | * @ssn: Starting Sequence Number expected to be aggregated. |
184 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 185 | * @timeout: reset timer value (in TUs). |
cee24a3e | 186 | * @dialog_token: dialog token for aggregation session |
a87f736d | 187 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 188 | * @reorder_lock: serializes access to reorder buffer, see below. |
4549cf2b MK |
189 | * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and |
190 | * and ssn. | |
788211d8 | 191 | * @removed: this session is removed (but might have been found due to RCU) |
a87f736d | 192 | * |
dd318575 JB |
193 | * This structure's lifetime is managed by RCU, assignments to |
194 | * the array holding it must hold the aggregation mutex. | |
2bff8ebf | 195 | * |
dd318575 JB |
196 | * The @reorder_lock is used to protect the members of this |
197 | * struct, except for @timeout, @buf_size and @dialog_token, | |
198 | * which are constant across the lifetime of the struct (the | |
199 | * dialog token being used only for debugging). | |
5aae2880 RR |
200 | */ |
201 | struct tid_ampdu_rx { | |
a87f736d | 202 | struct rcu_head rcu_head; |
2bff8ebf | 203 | spinlock_t reorder_lock; |
06470f74 | 204 | u64 reorder_buf_filtered; |
83eb935e | 205 | struct sk_buff_head *reorder_buf; |
4d050f1d | 206 | unsigned long *reorder_time; |
5aae2880 | 207 | struct timer_list session_timer; |
2bff8ebf | 208 | struct timer_list reorder_timer; |
12d3952f | 209 | unsigned long last_rx; |
056cdd59 JB |
210 | u16 head_seq_num; |
211 | u16 stored_mpdu_num; | |
cee24a3e RR |
212 | u16 ssn; |
213 | u16 buf_size; | |
214 | u16 timeout; | |
215 | u8 dialog_token; | |
4549cf2b | 216 | bool auto_seq; |
788211d8 | 217 | bool removed; |
5aae2880 RR |
218 | }; |
219 | ||
fcea6007 JB |
220 | /** |
221 | * struct sta_ampdu_mlme - STA aggregation information. | |
222 | * | |
412a6d80 SS |
223 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
224 | * to tid_tx[idx], which are protected by the sta spinlock) | |
225 | * tid_start_tx is also protected by sta->lock. | |
a87f736d | 226 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
7c3b1dd8 JB |
227 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
228 | * RX timer expired until the work for it runs | |
f41ccd71 SL |
229 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
230 | * driver requested to close until the work for it runs | |
412a6d80 SS |
231 | * @agg_session_valid: bitmap indicating which TID has a rx BA session open on |
232 | * @work: work struct for starting/stopping aggregation | |
233 | * @tid_tx: aggregation info for Tx per TID | |
234 | * @tid_start_tx: sessions where start was requested | |
235 | * @last_addba_req_time: timestamp of the last addBA request. | |
236 | * @addba_req_num: number of times addBA request has been sent. | |
237 | * @dialog_token_allocator: dialog token enumerator for each new session; | |
fcea6007 JB |
238 | */ |
239 | struct sta_ampdu_mlme { | |
a93e3644 | 240 | struct mutex mtx; |
fcea6007 | 241 | /* rx */ |
5a306f58 JB |
242 | struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
243 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
244 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
412a6d80 | 245 | unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
fcea6007 | 246 | /* tx */ |
0ab33703 | 247 | struct work_struct work; |
5a306f58 JB |
248 | struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
249 | struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; | |
250 | unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; | |
251 | u8 addba_req_num[IEEE80211_NUM_TIDS]; | |
fcea6007 JB |
252 | u8 dialog_token_allocator; |
253 | }; | |
254 | ||
255 | ||
b6da911b LK |
256 | /* Value to indicate no TID reservation */ |
257 | #define IEEE80211_TID_UNRESERVED 0xff | |
258 | ||
e495c247 JB |
259 | #define IEEE80211_FAST_XMIT_MAX_IV 18 |
260 | ||
17c18bf8 JB |
261 | /** |
262 | * struct ieee80211_fast_tx - TX fastpath information | |
263 | * @key: key to use for hw crypto | |
264 | * @hdr: the 802.11 header to put with the frame | |
265 | * @hdr_len: actual 802.11 header length | |
266 | * @sa_offs: offset of the SA | |
267 | * @da_offs: offset of the DA | |
268 | * @pn_offs: offset where to put PN for crypto (or 0 if not needed) | |
269 | * @band: band this will be transmitted on, for tx_info | |
270 | * @rcu_head: RCU head to free this struct | |
271 | * | |
e495c247 JB |
272 | * This struct is small enough so that the common case (maximum crypto |
273 | * header length of 8 like for CCMP/GCMP) fits into a single 64-byte | |
274 | * cache line. | |
17c18bf8 JB |
275 | */ |
276 | struct ieee80211_fast_tx { | |
277 | struct ieee80211_key *key; | |
17c18bf8 JB |
278 | u8 hdr_len; |
279 | u8 sa_offs, da_offs, pn_offs; | |
280 | u8 band; | |
e495c247 JB |
281 | u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + |
282 | sizeof(rfc1042_header)]; | |
17c18bf8 JB |
283 | |
284 | struct rcu_head rcu_head; | |
285 | }; | |
286 | ||
433f5bc1 JB |
287 | /** |
288 | * struct mesh_sta - mesh STA information | |
289 | * @plink_lock: serialize access to plink fields | |
290 | * @llid: Local link ID | |
291 | * @plid: Peer link ID | |
a69bd8e6 | 292 | * @aid: local aid supplied by peer |
433f5bc1 JB |
293 | * @reason: Cancel reason on PLINK_HOLDING state |
294 | * @plink_retries: Retries in establishment | |
295 | * @plink_state: peer link state | |
296 | * @plink_timeout: timeout of peer link | |
297 | * @plink_timer: peer link watch timer | |
298 | * @t_offset: timing offset relative to this host | |
299 | * @t_offset_setpoint: reference timing offset of this sta to be used when | |
300 | * calculating clockdrift | |
301 | * @local_pm: local link-specific power save mode | |
302 | * @peer_pm: peer-specific power save mode towards local STA | |
303 | * @nonpeer_pm: STA power save mode towards non-peer neighbors | |
304 | * @processed_beacon: set to true after peer rates and capabilities are | |
305 | * processed | |
a76d5e0a | 306 | * @fail_avg: moving percentage of failed MSDUs |
433f5bc1 JB |
307 | */ |
308 | struct mesh_sta { | |
309 | struct timer_list plink_timer; | |
310 | ||
311 | s64 t_offset; | |
312 | s64 t_offset_setpoint; | |
313 | ||
314 | spinlock_t plink_lock; | |
315 | u16 llid; | |
316 | u16 plid; | |
a69bd8e6 | 317 | u16 aid; |
433f5bc1 JB |
318 | u16 reason; |
319 | u8 plink_retries; | |
320 | ||
321 | bool processed_beacon; | |
322 | ||
323 | enum nl80211_plink_state plink_state; | |
324 | u32 plink_timeout; | |
325 | ||
326 | /* mesh power save */ | |
327 | enum nl80211_mesh_power_mode local_pm; | |
328 | enum nl80211_mesh_power_mode peer_pm; | |
329 | enum nl80211_mesh_power_mode nonpeer_pm; | |
a76d5e0a JB |
330 | |
331 | /* moving percentage of failed MSDUs */ | |
332 | unsigned int fail_avg; | |
433f5bc1 JB |
333 | }; |
334 | ||
40d9a38a JB |
335 | DECLARE_EWMA(signal, 1024, 8) |
336 | ||
693b1bbc JB |
337 | /** |
338 | * struct sta_info - STA information | |
339 | * | |
340 | * This structure collects information about a station that | |
341 | * mac80211 is communicating with. | |
342 | * | |
343 | * @list: global linked list entry | |
d778207b | 344 | * @free_list: list entry for keeping track of stations to free |
7bedd0cf | 345 | * @hash_node: hash node for rhashtable |
ac100ce5 JB |
346 | * @addr: station's MAC address - duplicated from public part to |
347 | * let the hash table work with just a single cacheline | |
693b1bbc | 348 | * @local: pointer to the global information |
e25cf4a6 | 349 | * @sdata: virtual interface this station belongs to |
2475b1cc MS |
350 | * @ptk: peer keys negotiated with this station, if any |
351 | * @ptk_idx: last installed peer key index | |
e31b8213 | 352 | * @gtk: group keys negotiated with this station, if any |
e25cf4a6 | 353 | * @rate_ctrl: rate control algorithm reference |
bbbe8c8c JB |
354 | * @rate_ctrl_lock: spinlock used to protect rate control data |
355 | * (data inside the algorithm, so serializes calls there) | |
e25cf4a6 | 356 | * @rate_ctrl_priv: rate control private per-STA pointer |
6ef307bc RD |
357 | * @lock: used for locking all fields that require locking, see comments |
358 | * in the header file. | |
5ac2e350 | 359 | * @drv_deliver_wk: used for delivering frames after driver PS unblocking |
e25cf4a6 | 360 | * @listen_interval: listen interval of this station, when we're acting as AP |
c2c98fde | 361 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
1d147bfa | 362 | * @ps_lock: used for powersave (when mac80211 is the AP) related locking |
948d887d JB |
363 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
364 | * when it leaves power saving state or polls | |
365 | * @tx_filtered: buffers (per AC) of frames we already tried to | |
366 | * transmit but were filtered by hardware due to STA having | |
367 | * entered power saving state, these are also delivered to | |
368 | * the station when it leaves powersave or polls for frames | |
369 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on | |
ba8c3d6f | 370 | * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on |
ebe27c91 | 371 | * @last_connected: time (in seconds) when a station got connected |
798a457d JB |
372 | * @last_seq_ctrl: last received seq/frag number from this STA (per TID |
373 | * plus one for non-QoS frames) | |
e25cf4a6 JB |
374 | * @tid_seq: per-TID sequence numbers for sending to this STA |
375 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 376 | * @timer_to_tid: identity mapping to ID timers |
433f5bc1 | 377 | * @mesh: mesh STA information |
fc4a25c5 | 378 | * @debugfs_dir: debug filesystem directory dentry |
af818581 | 379 | * @dead: set to true when sta is unlinked |
ef044763 | 380 | * @removed: set to true when sta is being removed from sta_list |
34e89507 | 381 | * @uploaded: set to true when sta is uploaded to the driver |
2a33bee2 | 382 | * @sta: station information we share with the driver |
d9a7ddb0 | 383 | * @sta_state: duplicates information about station state (for debug) |
a85e1d55 | 384 | * @beacon_loss_count: number of times beacon loss has triggered |
077f897a | 385 | * @rcu_head: RCU head used for freeing this station struct |
0af83d3d JB |
386 | * @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
387 | * taken from HT/VHT capabilities or VHT operating mode notification | |
687da132 EG |
388 | * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
389 | * AP only. | |
2475b1cc | 390 | * @cipher_scheme: optional cipher scheme for this station |
b6da911b | 391 | * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED) |
17c18bf8 | 392 | * @fast_tx: TX fastpath information |
0fabfaaf AN |
393 | * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to |
394 | * the BSS one. | |
e5a9f8d0 JB |
395 | * @tx_stats: TX statistics |
396 | * @rx_stats: RX statistics | |
397 | * @status_stats: TX status statistics | |
693b1bbc | 398 | */ |
f0706e82 | 399 | struct sta_info { |
693b1bbc | 400 | /* General information, mostly static */ |
d778207b | 401 | struct list_head list, free_list; |
b22cfcfc | 402 | struct rcu_head rcu_head; |
7bedd0cf | 403 | struct rhash_head hash_node; |
ac100ce5 | 404 | u8 addr[ETH_ALEN]; |
f0706e82 | 405 | struct ieee80211_local *local; |
d0709a65 | 406 | struct ieee80211_sub_if_data *sdata; |
40b275b6 | 407 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
2475b1cc | 408 | struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
2475b1cc | 409 | u8 ptk_idx; |
f0706e82 JB |
410 | struct rate_control_ref *rate_ctrl; |
411 | void *rate_ctrl_priv; | |
35c347ac | 412 | spinlock_t rate_ctrl_lock; |
07346f81 | 413 | spinlock_t lock; |
17741cdc | 414 | |
17c18bf8 JB |
415 | struct ieee80211_fast_tx __rcu *fast_tx; |
416 | ||
433f5bc1 JB |
417 | #ifdef CONFIG_MAC80211_MESH |
418 | struct mesh_sta *mesh; | |
419 | #endif | |
420 | ||
5ac2e350 | 421 | struct work_struct drv_deliver_wk; |
af818581 | 422 | |
693b1bbc | 423 | u16 listen_interval; |
f0706e82 | 424 | |
af818581 | 425 | bool dead; |
ef044763 | 426 | bool removed; |
af818581 | 427 | |
34e89507 | 428 | bool uploaded; |
693b1bbc | 429 | |
d9a7ddb0 JB |
430 | enum ieee80211_sta_state sta_state; |
431 | ||
c2c98fde JB |
432 | /* use the accessors defined below */ |
433 | unsigned long _flags; | |
693b1bbc | 434 | |
1d147bfa EG |
435 | /* STA powersave lock and frame queues */ |
436 | spinlock_t ps_lock; | |
948d887d JB |
437 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
438 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; | |
439 | unsigned long driver_buffered_tids; | |
ba8c3d6f | 440 | unsigned long txq_buffered_tids; |
693b1bbc | 441 | |
ebe27c91 | 442 | long last_connected; |
ef0621e8 | 443 | |
e5a9f8d0 JB |
444 | /* Updated from RX path only, no locking requirements */ |
445 | struct { | |
446 | unsigned long packets; | |
447 | u64 bytes; | |
448 | unsigned long last_rx; | |
449 | unsigned long num_duplicates; | |
450 | unsigned long fragments; | |
451 | unsigned long dropped; | |
452 | int last_signal; | |
e5a9f8d0 JB |
453 | u8 chains; |
454 | s8 chain_signal_last[IEEE80211_MAX_CHAINS]; | |
e5a9f8d0 JB |
455 | int last_rate_idx; |
456 | u32 last_rate_flag; | |
457 | u32 last_rate_vht_flag; | |
458 | u8 last_rate_vht_nss; | |
459 | u64 msdu[IEEE80211_NUM_TIDS + 1]; | |
460 | } rx_stats; | |
0be6ed13 JB |
461 | struct { |
462 | struct ewma_signal signal; | |
463 | struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS]; | |
464 | } rx_stats_avg; | |
ef0621e8 | 465 | |
9e26297a | 466 | /* Plus 1 for non-QoS frames */ |
5a306f58 | 467 | __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
693b1bbc JB |
468 | |
469 | /* Updated from TX status path only, no locking requirements */ | |
e5a9f8d0 JB |
470 | struct { |
471 | unsigned long filtered; | |
472 | unsigned long retry_failed, retry_count; | |
473 | unsigned int lost_packets; | |
474 | unsigned long last_tdls_pkt_time; | |
475 | u64 msdu_retries[IEEE80211_NUM_TIDS + 1]; | |
476 | u64 msdu_failed[IEEE80211_NUM_TIDS + 1]; | |
477 | } status_stats; | |
693b1bbc JB |
478 | |
479 | /* Updated from TX path only, no locking requirements */ | |
e5a9f8d0 JB |
480 | struct { |
481 | u64 packets[IEEE80211_NUM_ACS]; | |
482 | u64 bytes[IEEE80211_NUM_ACS]; | |
483 | struct ieee80211_tx_rate last_rate; | |
484 | u64 msdu[IEEE80211_NUM_TIDS + 1]; | |
485 | } tx_stats; | |
f591fa5d | 486 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
f0706e82 | 487 | |
d0709a65 | 488 | /* |
07346f81 | 489 | * Aggregation information, locked with lock. |
d0709a65 | 490 | */ |
5aae2880 | 491 | struct sta_ampdu_mlme ampdu_mlme; |
5a306f58 | 492 | u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
693b1bbc | 493 | |
e9f207f0 | 494 | #ifdef CONFIG_MAC80211_DEBUGFS |
fc4a25c5 | 495 | struct dentry *debugfs_dir; |
e9f207f0 | 496 | #endif |
17741cdc | 497 | |
0af83d3d JB |
498 | enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
499 | ||
687da132 | 500 | enum ieee80211_smps_mode known_smps_mode; |
2475b1cc | 501 | const struct ieee80211_cipher_scheme *cipher_scheme; |
687da132 | 502 | |
b6da911b LK |
503 | u8 reserved_tid; |
504 | ||
0fabfaaf AN |
505 | struct cfg80211_chan_def tdls_chandef; |
506 | ||
17741cdc JB |
507 | /* keep last! */ |
508 | struct ieee80211_sta sta; | |
f0706e82 JB |
509 | }; |
510 | ||
57cf8043 | 511 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
d6d1a5a7 JB |
512 | { |
513 | #ifdef CONFIG_MAC80211_MESH | |
433f5bc1 | 514 | return sta->mesh->plink_state; |
d6d1a5a7 | 515 | #endif |
57cf8043 | 516 | return NL80211_PLINK_LISTEN; |
d6d1a5a7 JB |
517 | } |
518 | ||
c2c98fde JB |
519 | static inline void set_sta_flag(struct sta_info *sta, |
520 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 521 | { |
d9a7ddb0 JB |
522 | WARN_ON(flag == WLAN_STA_AUTH || |
523 | flag == WLAN_STA_ASSOC || | |
524 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 525 | set_bit(flag, &sta->_flags); |
07346f81 JB |
526 | } |
527 | ||
c2c98fde JB |
528 | static inline void clear_sta_flag(struct sta_info *sta, |
529 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 530 | { |
d9a7ddb0 JB |
531 | WARN_ON(flag == WLAN_STA_AUTH || |
532 | flag == WLAN_STA_ASSOC || | |
533 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 534 | clear_bit(flag, &sta->_flags); |
07346f81 JB |
535 | } |
536 | ||
c2c98fde JB |
537 | static inline int test_sta_flag(struct sta_info *sta, |
538 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 539 | { |
c2c98fde | 540 | return test_bit(flag, &sta->_flags); |
07346f81 JB |
541 | } |
542 | ||
c2c98fde JB |
543 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
544 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 545 | { |
d9a7ddb0 JB |
546 | WARN_ON(flag == WLAN_STA_AUTH || |
547 | flag == WLAN_STA_ASSOC || | |
548 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 549 | return test_and_clear_bit(flag, &sta->_flags); |
07346f81 JB |
550 | } |
551 | ||
e7f4a940 JB |
552 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
553 | enum ieee80211_sta_info_flags flag) | |
554 | { | |
d9a7ddb0 JB |
555 | WARN_ON(flag == WLAN_STA_AUTH || |
556 | flag == WLAN_STA_ASSOC || | |
557 | flag == WLAN_STA_AUTHORIZED); | |
e7f4a940 JB |
558 | return test_and_set_bit(flag, &sta->_flags); |
559 | } | |
560 | ||
83d5cc01 JB |
561 | int sta_info_move_state(struct sta_info *sta, |
562 | enum ieee80211_sta_state new_state); | |
d9a7ddb0 | 563 | |
83d5cc01 JB |
564 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
565 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 566 | { |
83d5cc01 JB |
567 | int ret; |
568 | ||
569 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
570 | ||
571 | ret = sta_info_move_state(sta, new_state); | |
d9a7ddb0 JB |
572 | WARN_ON_ONCE(ret); |
573 | } | |
574 | ||
575 | ||
ec034b20 JB |
576 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
577 | struct tid_ampdu_tx *tid_tx); | |
f0706e82 | 578 | |
40b275b6 JB |
579 | static inline struct tid_ampdu_tx * |
580 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) | |
581 | { | |
582 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], | |
583 | lockdep_is_held(&sta->lock) || | |
584 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
585 | } | |
f0706e82 | 586 | |
948d887d JB |
587 | /* Maximum number of frames to buffer per power saving station per AC */ |
588 | #define STA_MAX_TX_BUFFER 64 | |
f0706e82 JB |
589 | |
590 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
591 | * smaller than this value, the minimum value here is used instead. */ | |
592 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
593 | ||
594 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
595 | */ | |
596 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
597 | ||
d0709a65 | 598 | /* |
abe60632 | 599 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 600 | */ |
abe60632 JB |
601 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
602 | const u8 *addr); | |
603 | ||
0e5ded5a FF |
604 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
605 | const u8 *addr); | |
606 | ||
7bedd0cf JB |
607 | u32 sta_addr_hash(const void *key, u32 length, u32 seed); |
608 | ||
609 | #define _sta_bucket_idx(_tbl, _a) \ | |
610 | rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd)) | |
abe60632 | 611 | |
7bedd0cf JB |
612 | #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \ |
613 | rht_for_each_entry_rcu(_sta, _tmp, tbl, \ | |
614 | _sta_bucket_idx(tbl, _addr), \ | |
615 | hash_node) \ | |
abe60632 | 616 | /* compare address and run code only if it matches */ \ |
ac100ce5 | 617 | if (ether_addr_equal(_sta->addr, (_addr))) |
abe60632 | 618 | |
d0709a65 JB |
619 | /* |
620 | * Get STA info by index, BROKEN! | |
621 | */ | |
3b53fde8 JB |
622 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
623 | int idx); | |
d0709a65 | 624 | /* |
73651ee6 JB |
625 | * Create a new STA info, caller owns returned structure |
626 | * until sta_info_insert(). | |
d0709a65 | 627 | */ |
73651ee6 | 628 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 629 | const u8 *addr, gfp_t gfp); |
d9a7ddb0 JB |
630 | |
631 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); | |
632 | ||
73651ee6 JB |
633 | /* |
634 | * Insert STA info into hash table/list, returns zero or a | |
635 | * -EEXIST if (if the same MAC address is already present). | |
636 | * | |
34e89507 JB |
637 | * Calling the non-rcu version makes the caller relinquish, |
638 | * the _rcu version calls read_lock_rcu() and must be called | |
639 | * without it held. | |
73651ee6 JB |
640 | */ |
641 | int sta_info_insert(struct sta_info *sta); | |
34e89507 | 642 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
34e89507 | 643 | |
83d5cc01 | 644 | int __must_check __sta_info_destroy(struct sta_info *sta); |
34e89507 JB |
645 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
646 | const u8 *addr); | |
647 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
648 | const u8 *addr); | |
f0706e82 | 649 | |
c868cb35 | 650 | void sta_info_recalc_tim(struct sta_info *sta); |
004c872e | 651 | |
7bedd0cf | 652 | int sta_info_init(struct ieee80211_local *local); |
d0709a65 | 653 | void sta_info_stop(struct ieee80211_local *local); |
051007d9 JB |
654 | |
655 | /** | |
656 | * sta_info_flush - flush matching STA entries from the STA table | |
657 | * | |
658 | * Returns the number of removed STA entries. | |
659 | * | |
660 | * @sdata: sdata to remove all stations from | |
e716251d | 661 | * @vlans: if the given interface is an AP interface, also flush VLANs |
051007d9 | 662 | */ |
e716251d JB |
663 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
664 | ||
665 | static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) | |
666 | { | |
667 | return __sta_info_flush(sdata, false); | |
668 | } | |
051007d9 | 669 | |
6b62bf32 TP |
670 | void sta_set_rate_info_tx(struct sta_info *sta, |
671 | const struct ieee80211_tx_rate *rate, | |
672 | struct rate_info *rinfo); | |
b7ffbd7e JB |
673 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo); |
674 | ||
24723d1b JB |
675 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
676 | unsigned long exp_time); | |
687da132 | 677 | u8 sta_info_tx_streams(struct sta_info *sta); |
d0709a65 | 678 | |
af818581 JB |
679 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
680 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
47086fc5 | 681 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
af818581 | 682 | |
f0706e82 | 683 | #endif /* STA_INFO_H */ |