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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 | |
238814fd JB |
72 | */ |
73 | enum ieee80211_sta_info_flags { | |
c2c98fde JB |
74 | WLAN_STA_AUTH, |
75 | WLAN_STA_ASSOC, | |
76 | WLAN_STA_PS_STA, | |
77 | WLAN_STA_AUTHORIZED, | |
78 | WLAN_STA_SHORT_PREAMBLE, | |
c2c98fde JB |
79 | WLAN_STA_WDS, |
80 | WLAN_STA_CLEAR_PS_FILT, | |
81 | WLAN_STA_MFP, | |
82 | WLAN_STA_BLOCK_BA, | |
83 | WLAN_STA_PS_DRIVER, | |
84 | WLAN_STA_PSPOLL, | |
85 | WLAN_STA_TDLS_PEER, | |
86 | WLAN_STA_TDLS_PEER_AUTH, | |
626911cc | 87 | WLAN_STA_TDLS_INITIATOR, |
9041c1fa | 88 | WLAN_STA_TDLS_CHAN_SWITCH, |
a7a6bdd0 | 89 | WLAN_STA_TDLS_OFF_CHANNEL, |
b98fb44f | 90 | WLAN_STA_TDLS_WIDER_BW, |
c2c98fde JB |
91 | WLAN_STA_UAPSD, |
92 | WLAN_STA_SP, | |
e7f4a940 | 93 | WLAN_STA_4ADDR_EVENT, |
83d5cc01 | 94 | WLAN_STA_INSERTED, |
e1936e94 | 95 | WLAN_STA_RATE_CONTROL, |
dbf498fb | 96 | WLAN_STA_TOFFSET_KNOWN, |
3f52b7e3 MP |
97 | WLAN_STA_MPSP_OWNER, |
98 | WLAN_STA_MPSP_RECIPIENT, | |
5ac2e350 | 99 | WLAN_STA_PS_DELIVER, |
238814fd | 100 | }; |
d9a7ddb0 | 101 | |
5aae2880 | 102 | #define ADDBA_RESP_INTERVAL HZ |
84381b4e NM |
103 | #define HT_AGG_MAX_RETRIES 15 |
104 | #define HT_AGG_BURST_RETRIES 3 | |
105 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) | |
5aae2880 | 106 | |
a622ab72 JB |
107 | #define HT_AGG_STATE_DRV_READY 0 |
108 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
109 | #define HT_AGG_STATE_OPERATIONAL 2 | |
110 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
111 | #define HT_AGG_STATE_WANT_START 4 |
112 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 | 113 | |
c82c4a80 JB |
114 | enum ieee80211_agg_stop_reason { |
115 | AGG_STOP_DECLINED, | |
116 | AGG_STOP_LOCAL_REQUEST, | |
117 | AGG_STOP_PEER_REQUEST, | |
118 | AGG_STOP_DESTROY_STA, | |
119 | }; | |
120 | ||
80656c20 RR |
121 | /** |
122 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
123 | * | |
a622ab72 | 124 | * @rcu_head: rcu head for freeing structure |
285fa695 | 125 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
80656c20 | 126 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 127 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 128 | * @dialog_token: dialog token for aggregation session |
bd2ce6e4 | 129 | * @timeout: session timeout value to be filled in ADDBA requests |
a622ab72 | 130 | * @state: session state (see above) |
12d3952f | 131 | * @last_tx: jiffies of last tx activity |
a622ab72 | 132 | * @stop_initiator: initiator of a session stop |
53f73c09 | 133 | * @tx_stop: TX DelBA frame when stopping |
0b01f030 | 134 | * @buf_size: reorder buffer size at receiver |
f0425bed FF |
135 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
136 | * @bar_pending: BAR needs to be re-sent | |
e3abc8ff | 137 | * @amsdu: support A-MSDU withing A-MDPU |
a622ab72 | 138 | * |
dd318575 JB |
139 | * This structure's lifetime is managed by RCU, assignments to |
140 | * the array holding it must hold the aggregation mutex. | |
141 | * | |
142 | * The TX path can access it under RCU lock-free if, and | |
143 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL | |
144 | * set. Otherwise, the TX path must also acquire the spinlock | |
145 | * and re-check the state, see comments in the tx code | |
146 | * touching it. | |
80656c20 RR |
147 | */ |
148 | struct tid_ampdu_tx { | |
a622ab72 | 149 | struct rcu_head rcu_head; |
285fa695 | 150 | struct timer_list session_timer; |
80656c20 | 151 | struct timer_list addba_resp_timer; |
cd8ffc80 | 152 | struct sk_buff_head pending; |
a622ab72 | 153 | unsigned long state; |
12d3952f | 154 | unsigned long last_tx; |
bd2ce6e4 | 155 | u16 timeout; |
cee24a3e | 156 | u8 dialog_token; |
a622ab72 | 157 | u8 stop_initiator; |
53f73c09 | 158 | bool tx_stop; |
0b01f030 | 159 | u8 buf_size; |
f0425bed FF |
160 | |
161 | u16 failed_bar_ssn; | |
162 | bool bar_pending; | |
e3abc8ff | 163 | bool amsdu; |
80656c20 | 164 | }; |
5aae2880 RR |
165 | |
166 | /** | |
167 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
168 | * | |
83eb935e MK |
169 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an |
170 | * A-MSDU with individually reported subframes. | |
06470f74 SS |
171 | * @reorder_buf_filtered: bitmap indicating where there are filtered frames in |
172 | * the reorder buffer that should be ignored when releasing frames | |
4d050f1d | 173 | * @reorder_time: jiffies when skb was added |
5aae2880 | 174 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 175 | * @reorder_timer: releases expired frames from the reorder buffer. |
12d3952f | 176 | * @last_rx: jiffies of last rx activity |
056cdd59 JB |
177 | * @head_seq_num: head sequence number in reordering buffer. |
178 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
179 | * @ssn: Starting Sequence Number expected to be aggregated. |
180 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 181 | * @timeout: reset timer value (in TUs). |
cee24a3e | 182 | * @dialog_token: dialog token for aggregation session |
a87f736d | 183 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 184 | * @reorder_lock: serializes access to reorder buffer, see below. |
4549cf2b MK |
185 | * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and |
186 | * and ssn. | |
788211d8 | 187 | * @removed: this session is removed (but might have been found due to RCU) |
a87f736d | 188 | * |
dd318575 JB |
189 | * This structure's lifetime is managed by RCU, assignments to |
190 | * the array holding it must hold the aggregation mutex. | |
2bff8ebf | 191 | * |
dd318575 JB |
192 | * The @reorder_lock is used to protect the members of this |
193 | * struct, except for @timeout, @buf_size and @dialog_token, | |
194 | * which are constant across the lifetime of the struct (the | |
195 | * dialog token being used only for debugging). | |
5aae2880 RR |
196 | */ |
197 | struct tid_ampdu_rx { | |
a87f736d | 198 | struct rcu_head rcu_head; |
2bff8ebf | 199 | spinlock_t reorder_lock; |
06470f74 | 200 | u64 reorder_buf_filtered; |
83eb935e | 201 | struct sk_buff_head *reorder_buf; |
4d050f1d | 202 | unsigned long *reorder_time; |
5aae2880 | 203 | struct timer_list session_timer; |
2bff8ebf | 204 | struct timer_list reorder_timer; |
12d3952f | 205 | unsigned long last_rx; |
056cdd59 JB |
206 | u16 head_seq_num; |
207 | u16 stored_mpdu_num; | |
cee24a3e RR |
208 | u16 ssn; |
209 | u16 buf_size; | |
210 | u16 timeout; | |
211 | u8 dialog_token; | |
4549cf2b | 212 | bool auto_seq; |
788211d8 | 213 | bool removed; |
5aae2880 RR |
214 | }; |
215 | ||
fcea6007 JB |
216 | /** |
217 | * struct sta_ampdu_mlme - STA aggregation information. | |
218 | * | |
412a6d80 SS |
219 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
220 | * to tid_tx[idx], which are protected by the sta spinlock) | |
221 | * tid_start_tx is also protected by sta->lock. | |
a87f736d | 222 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
7c3b1dd8 JB |
223 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
224 | * RX timer expired until the work for it runs | |
f41ccd71 SL |
225 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
226 | * driver requested to close until the work for it runs | |
412a6d80 SS |
227 | * @agg_session_valid: bitmap indicating which TID has a rx BA session open on |
228 | * @work: work struct for starting/stopping aggregation | |
229 | * @tid_tx: aggregation info for Tx per TID | |
230 | * @tid_start_tx: sessions where start was requested | |
231 | * @last_addba_req_time: timestamp of the last addBA request. | |
232 | * @addba_req_num: number of times addBA request has been sent. | |
233 | * @dialog_token_allocator: dialog token enumerator for each new session; | |
fcea6007 JB |
234 | */ |
235 | struct sta_ampdu_mlme { | |
a93e3644 | 236 | struct mutex mtx; |
fcea6007 | 237 | /* rx */ |
5a306f58 JB |
238 | struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
239 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
240 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
412a6d80 | 241 | unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
fcea6007 | 242 | /* tx */ |
0ab33703 | 243 | struct work_struct work; |
5a306f58 JB |
244 | struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
245 | struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; | |
246 | unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; | |
247 | u8 addba_req_num[IEEE80211_NUM_TIDS]; | |
fcea6007 JB |
248 | u8 dialog_token_allocator; |
249 | }; | |
250 | ||
251 | ||
b6da911b LK |
252 | /* Value to indicate no TID reservation */ |
253 | #define IEEE80211_TID_UNRESERVED 0xff | |
254 | ||
e495c247 JB |
255 | #define IEEE80211_FAST_XMIT_MAX_IV 18 |
256 | ||
17c18bf8 JB |
257 | /** |
258 | * struct ieee80211_fast_tx - TX fastpath information | |
259 | * @key: key to use for hw crypto | |
260 | * @hdr: the 802.11 header to put with the frame | |
261 | * @hdr_len: actual 802.11 header length | |
262 | * @sa_offs: offset of the SA | |
263 | * @da_offs: offset of the DA | |
264 | * @pn_offs: offset where to put PN for crypto (or 0 if not needed) | |
265 | * @band: band this will be transmitted on, for tx_info | |
266 | * @rcu_head: RCU head to free this struct | |
267 | * | |
e495c247 JB |
268 | * This struct is small enough so that the common case (maximum crypto |
269 | * header length of 8 like for CCMP/GCMP) fits into a single 64-byte | |
270 | * cache line. | |
17c18bf8 JB |
271 | */ |
272 | struct ieee80211_fast_tx { | |
273 | struct ieee80211_key *key; | |
17c18bf8 JB |
274 | u8 hdr_len; |
275 | u8 sa_offs, da_offs, pn_offs; | |
276 | u8 band; | |
e495c247 JB |
277 | u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + |
278 | sizeof(rfc1042_header)]; | |
17c18bf8 JB |
279 | |
280 | struct rcu_head rcu_head; | |
281 | }; | |
282 | ||
433f5bc1 JB |
283 | /** |
284 | * struct mesh_sta - mesh STA information | |
285 | * @plink_lock: serialize access to plink fields | |
286 | * @llid: Local link ID | |
287 | * @plid: Peer link ID | |
a69bd8e6 | 288 | * @aid: local aid supplied by peer |
433f5bc1 JB |
289 | * @reason: Cancel reason on PLINK_HOLDING state |
290 | * @plink_retries: Retries in establishment | |
291 | * @plink_state: peer link state | |
292 | * @plink_timeout: timeout of peer link | |
293 | * @plink_timer: peer link watch timer | |
294 | * @t_offset: timing offset relative to this host | |
295 | * @t_offset_setpoint: reference timing offset of this sta to be used when | |
296 | * calculating clockdrift | |
297 | * @local_pm: local link-specific power save mode | |
298 | * @peer_pm: peer-specific power save mode towards local STA | |
299 | * @nonpeer_pm: STA power save mode towards non-peer neighbors | |
300 | * @processed_beacon: set to true after peer rates and capabilities are | |
301 | * processed | |
a76d5e0a | 302 | * @fail_avg: moving percentage of failed MSDUs |
433f5bc1 JB |
303 | */ |
304 | struct mesh_sta { | |
305 | struct timer_list plink_timer; | |
306 | ||
307 | s64 t_offset; | |
308 | s64 t_offset_setpoint; | |
309 | ||
310 | spinlock_t plink_lock; | |
311 | u16 llid; | |
312 | u16 plid; | |
a69bd8e6 | 313 | u16 aid; |
433f5bc1 JB |
314 | u16 reason; |
315 | u8 plink_retries; | |
316 | ||
317 | bool processed_beacon; | |
318 | ||
319 | enum nl80211_plink_state plink_state; | |
320 | u32 plink_timeout; | |
321 | ||
322 | /* mesh power save */ | |
323 | enum nl80211_mesh_power_mode local_pm; | |
324 | enum nl80211_mesh_power_mode peer_pm; | |
325 | enum nl80211_mesh_power_mode nonpeer_pm; | |
a76d5e0a JB |
326 | |
327 | /* moving percentage of failed MSDUs */ | |
328 | unsigned int fail_avg; | |
433f5bc1 JB |
329 | }; |
330 | ||
40d9a38a JB |
331 | DECLARE_EWMA(signal, 1024, 8) |
332 | ||
693b1bbc JB |
333 | /** |
334 | * struct sta_info - STA information | |
335 | * | |
336 | * This structure collects information about a station that | |
337 | * mac80211 is communicating with. | |
338 | * | |
339 | * @list: global linked list entry | |
d778207b | 340 | * @free_list: list entry for keeping track of stations to free |
7bedd0cf | 341 | * @hash_node: hash node for rhashtable |
ac100ce5 JB |
342 | * @addr: station's MAC address - duplicated from public part to |
343 | * let the hash table work with just a single cacheline | |
693b1bbc | 344 | * @local: pointer to the global information |
e25cf4a6 | 345 | * @sdata: virtual interface this station belongs to |
2475b1cc MS |
346 | * @ptk: peer keys negotiated with this station, if any |
347 | * @ptk_idx: last installed peer key index | |
e31b8213 | 348 | * @gtk: group keys negotiated with this station, if any |
e25cf4a6 | 349 | * @rate_ctrl: rate control algorithm reference |
bbbe8c8c JB |
350 | * @rate_ctrl_lock: spinlock used to protect rate control data |
351 | * (data inside the algorithm, so serializes calls there) | |
e25cf4a6 | 352 | * @rate_ctrl_priv: rate control private per-STA pointer |
6ef307bc RD |
353 | * @lock: used for locking all fields that require locking, see comments |
354 | * in the header file. | |
5ac2e350 | 355 | * @drv_deliver_wk: used for delivering frames after driver PS unblocking |
e25cf4a6 | 356 | * @listen_interval: listen interval of this station, when we're acting as AP |
c2c98fde | 357 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
1d147bfa | 358 | * @ps_lock: used for powersave (when mac80211 is the AP) related locking |
948d887d JB |
359 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
360 | * when it leaves power saving state or polls | |
361 | * @tx_filtered: buffers (per AC) of frames we already tried to | |
362 | * transmit but were filtered by hardware due to STA having | |
363 | * entered power saving state, these are also delivered to | |
364 | * the station when it leaves powersave or polls for frames | |
365 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on | |
ba8c3d6f | 366 | * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on |
ebe27c91 | 367 | * @last_connected: time (in seconds) when a station got connected |
798a457d JB |
368 | * @last_seq_ctrl: last received seq/frag number from this STA (per TID |
369 | * plus one for non-QoS frames) | |
e25cf4a6 JB |
370 | * @tid_seq: per-TID sequence numbers for sending to this STA |
371 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 372 | * @timer_to_tid: identity mapping to ID timers |
433f5bc1 | 373 | * @mesh: mesh STA information |
6ef307bc | 374 | * @debugfs: debug filesystem info |
af818581 | 375 | * @dead: set to true when sta is unlinked |
ef044763 | 376 | * @removed: set to true when sta is being removed from sta_list |
34e89507 | 377 | * @uploaded: set to true when sta is uploaded to the driver |
2a33bee2 | 378 | * @sta: station information we share with the driver |
d9a7ddb0 | 379 | * @sta_state: duplicates information about station state (for debug) |
077f897a | 380 | * @rcu_head: RCU head used for freeing this station struct |
0af83d3d JB |
381 | * @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
382 | * taken from HT/VHT capabilities or VHT operating mode notification | |
687da132 EG |
383 | * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
384 | * AP only. | |
2475b1cc | 385 | * @cipher_scheme: optional cipher scheme for this station |
b6da911b | 386 | * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED) |
17c18bf8 | 387 | * @fast_tx: TX fastpath information |
0fabfaaf AN |
388 | * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to |
389 | * the BSS one. | |
e5a9f8d0 JB |
390 | * @tx_stats: TX statistics |
391 | * @rx_stats: RX statistics | |
392 | * @status_stats: TX status statistics | |
693b1bbc | 393 | */ |
f0706e82 | 394 | struct sta_info { |
693b1bbc | 395 | /* General information, mostly static */ |
d778207b | 396 | struct list_head list, free_list; |
b22cfcfc | 397 | struct rcu_head rcu_head; |
7bedd0cf | 398 | struct rhash_head hash_node; |
ac100ce5 | 399 | u8 addr[ETH_ALEN]; |
f0706e82 | 400 | struct ieee80211_local *local; |
d0709a65 | 401 | struct ieee80211_sub_if_data *sdata; |
40b275b6 | 402 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
2475b1cc | 403 | struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
2475b1cc | 404 | u8 ptk_idx; |
f0706e82 JB |
405 | struct rate_control_ref *rate_ctrl; |
406 | void *rate_ctrl_priv; | |
35c347ac | 407 | spinlock_t rate_ctrl_lock; |
07346f81 | 408 | spinlock_t lock; |
17741cdc | 409 | |
17c18bf8 JB |
410 | struct ieee80211_fast_tx __rcu *fast_tx; |
411 | ||
433f5bc1 JB |
412 | #ifdef CONFIG_MAC80211_MESH |
413 | struct mesh_sta *mesh; | |
414 | #endif | |
415 | ||
5ac2e350 | 416 | struct work_struct drv_deliver_wk; |
af818581 | 417 | |
693b1bbc | 418 | u16 listen_interval; |
f0706e82 | 419 | |
af818581 | 420 | bool dead; |
ef044763 | 421 | bool removed; |
af818581 | 422 | |
34e89507 | 423 | bool uploaded; |
693b1bbc | 424 | |
d9a7ddb0 JB |
425 | enum ieee80211_sta_state sta_state; |
426 | ||
c2c98fde JB |
427 | /* use the accessors defined below */ |
428 | unsigned long _flags; | |
693b1bbc | 429 | |
1d147bfa EG |
430 | /* STA powersave lock and frame queues */ |
431 | spinlock_t ps_lock; | |
948d887d JB |
432 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
433 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; | |
434 | unsigned long driver_buffered_tids; | |
ba8c3d6f | 435 | unsigned long txq_buffered_tids; |
693b1bbc | 436 | |
ebe27c91 | 437 | long last_connected; |
ef0621e8 | 438 | |
e5a9f8d0 JB |
439 | /* Updated from RX path only, no locking requirements */ |
440 | struct { | |
441 | unsigned long packets; | |
442 | u64 bytes; | |
443 | unsigned long last_rx; | |
444 | unsigned long num_duplicates; | |
445 | unsigned long fragments; | |
446 | unsigned long dropped; | |
447 | int last_signal; | |
448 | struct ewma_signal avg_signal; | |
449 | u8 chains; | |
450 | s8 chain_signal_last[IEEE80211_MAX_CHAINS]; | |
451 | struct ewma_signal chain_signal_avg[IEEE80211_MAX_CHAINS]; | |
452 | int last_rate_idx; | |
453 | u32 last_rate_flag; | |
454 | u32 last_rate_vht_flag; | |
455 | u8 last_rate_vht_nss; | |
456 | u64 msdu[IEEE80211_NUM_TIDS + 1]; | |
457 | } rx_stats; | |
ef0621e8 | 458 | |
9e26297a | 459 | /* Plus 1 for non-QoS frames */ |
5a306f58 | 460 | __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
693b1bbc JB |
461 | |
462 | /* Updated from TX status path only, no locking requirements */ | |
e5a9f8d0 JB |
463 | struct { |
464 | unsigned long filtered; | |
465 | unsigned long retry_failed, retry_count; | |
466 | unsigned int lost_packets; | |
467 | unsigned long last_tdls_pkt_time; | |
468 | u64 msdu_retries[IEEE80211_NUM_TIDS + 1]; | |
469 | u64 msdu_failed[IEEE80211_NUM_TIDS + 1]; | |
470 | } status_stats; | |
693b1bbc JB |
471 | |
472 | /* Updated from TX path only, no locking requirements */ | |
e5a9f8d0 JB |
473 | struct { |
474 | u64 packets[IEEE80211_NUM_ACS]; | |
475 | u64 bytes[IEEE80211_NUM_ACS]; | |
476 | struct ieee80211_tx_rate last_rate; | |
477 | u64 msdu[IEEE80211_NUM_TIDS + 1]; | |
478 | } tx_stats; | |
f591fa5d | 479 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
f0706e82 | 480 | |
d0709a65 | 481 | /* |
07346f81 | 482 | * Aggregation information, locked with lock. |
d0709a65 | 483 | */ |
5aae2880 | 484 | struct sta_ampdu_mlme ampdu_mlme; |
5a306f58 | 485 | u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
693b1bbc | 486 | |
e9f207f0 JB |
487 | #ifdef CONFIG_MAC80211_DEBUGFS |
488 | struct sta_info_debugfsdentries { | |
489 | struct dentry *dir; | |
63044e9f | 490 | bool add_has_run; |
e9f207f0 JB |
491 | } debugfs; |
492 | #endif | |
17741cdc | 493 | |
0af83d3d JB |
494 | enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
495 | ||
687da132 | 496 | enum ieee80211_smps_mode known_smps_mode; |
2475b1cc | 497 | const struct ieee80211_cipher_scheme *cipher_scheme; |
687da132 | 498 | |
b6da911b LK |
499 | u8 reserved_tid; |
500 | ||
0fabfaaf AN |
501 | struct cfg80211_chan_def tdls_chandef; |
502 | ||
17741cdc JB |
503 | /* keep last! */ |
504 | struct ieee80211_sta sta; | |
f0706e82 JB |
505 | }; |
506 | ||
57cf8043 | 507 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
d6d1a5a7 JB |
508 | { |
509 | #ifdef CONFIG_MAC80211_MESH | |
433f5bc1 | 510 | return sta->mesh->plink_state; |
d6d1a5a7 | 511 | #endif |
57cf8043 | 512 | return NL80211_PLINK_LISTEN; |
d6d1a5a7 JB |
513 | } |
514 | ||
c2c98fde JB |
515 | static inline void set_sta_flag(struct sta_info *sta, |
516 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 517 | { |
d9a7ddb0 JB |
518 | WARN_ON(flag == WLAN_STA_AUTH || |
519 | flag == WLAN_STA_ASSOC || | |
520 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 521 | set_bit(flag, &sta->_flags); |
07346f81 JB |
522 | } |
523 | ||
c2c98fde JB |
524 | static inline void clear_sta_flag(struct sta_info *sta, |
525 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 526 | { |
d9a7ddb0 JB |
527 | WARN_ON(flag == WLAN_STA_AUTH || |
528 | flag == WLAN_STA_ASSOC || | |
529 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 530 | clear_bit(flag, &sta->_flags); |
07346f81 JB |
531 | } |
532 | ||
c2c98fde JB |
533 | static inline int test_sta_flag(struct sta_info *sta, |
534 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 535 | { |
c2c98fde | 536 | return test_bit(flag, &sta->_flags); |
07346f81 JB |
537 | } |
538 | ||
c2c98fde JB |
539 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
540 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 541 | { |
d9a7ddb0 JB |
542 | WARN_ON(flag == WLAN_STA_AUTH || |
543 | flag == WLAN_STA_ASSOC || | |
544 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 545 | return test_and_clear_bit(flag, &sta->_flags); |
07346f81 JB |
546 | } |
547 | ||
e7f4a940 JB |
548 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
549 | enum ieee80211_sta_info_flags flag) | |
550 | { | |
d9a7ddb0 JB |
551 | WARN_ON(flag == WLAN_STA_AUTH || |
552 | flag == WLAN_STA_ASSOC || | |
553 | flag == WLAN_STA_AUTHORIZED); | |
e7f4a940 JB |
554 | return test_and_set_bit(flag, &sta->_flags); |
555 | } | |
556 | ||
83d5cc01 JB |
557 | int sta_info_move_state(struct sta_info *sta, |
558 | enum ieee80211_sta_state new_state); | |
d9a7ddb0 | 559 | |
83d5cc01 JB |
560 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
561 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 562 | { |
83d5cc01 JB |
563 | int ret; |
564 | ||
565 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
566 | ||
567 | ret = sta_info_move_state(sta, new_state); | |
d9a7ddb0 JB |
568 | WARN_ON_ONCE(ret); |
569 | } | |
570 | ||
571 | ||
ec034b20 JB |
572 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
573 | struct tid_ampdu_tx *tid_tx); | |
f0706e82 | 574 | |
40b275b6 JB |
575 | static inline struct tid_ampdu_tx * |
576 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) | |
577 | { | |
578 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], | |
579 | lockdep_is_held(&sta->lock) || | |
580 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
581 | } | |
f0706e82 | 582 | |
948d887d JB |
583 | /* Maximum number of frames to buffer per power saving station per AC */ |
584 | #define STA_MAX_TX_BUFFER 64 | |
f0706e82 JB |
585 | |
586 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
587 | * smaller than this value, the minimum value here is used instead. */ | |
588 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
589 | ||
590 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
591 | */ | |
592 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
593 | ||
d0709a65 | 594 | /* |
abe60632 | 595 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 596 | */ |
abe60632 JB |
597 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
598 | const u8 *addr); | |
599 | ||
0e5ded5a FF |
600 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
601 | const u8 *addr); | |
602 | ||
7bedd0cf JB |
603 | u32 sta_addr_hash(const void *key, u32 length, u32 seed); |
604 | ||
605 | #define _sta_bucket_idx(_tbl, _a) \ | |
606 | rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd)) | |
abe60632 | 607 | |
7bedd0cf JB |
608 | #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \ |
609 | rht_for_each_entry_rcu(_sta, _tmp, tbl, \ | |
610 | _sta_bucket_idx(tbl, _addr), \ | |
611 | hash_node) \ | |
abe60632 | 612 | /* compare address and run code only if it matches */ \ |
ac100ce5 | 613 | if (ether_addr_equal(_sta->addr, (_addr))) |
abe60632 | 614 | |
d0709a65 JB |
615 | /* |
616 | * Get STA info by index, BROKEN! | |
617 | */ | |
3b53fde8 JB |
618 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
619 | int idx); | |
d0709a65 | 620 | /* |
73651ee6 JB |
621 | * Create a new STA info, caller owns returned structure |
622 | * until sta_info_insert(). | |
d0709a65 | 623 | */ |
73651ee6 | 624 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 625 | const u8 *addr, gfp_t gfp); |
d9a7ddb0 JB |
626 | |
627 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); | |
628 | ||
73651ee6 JB |
629 | /* |
630 | * Insert STA info into hash table/list, returns zero or a | |
631 | * -EEXIST if (if the same MAC address is already present). | |
632 | * | |
34e89507 JB |
633 | * Calling the non-rcu version makes the caller relinquish, |
634 | * the _rcu version calls read_lock_rcu() and must be called | |
635 | * without it held. | |
73651ee6 JB |
636 | */ |
637 | int sta_info_insert(struct sta_info *sta); | |
34e89507 | 638 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
34e89507 | 639 | |
83d5cc01 | 640 | int __must_check __sta_info_destroy(struct sta_info *sta); |
34e89507 JB |
641 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
642 | const u8 *addr); | |
643 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
644 | const u8 *addr); | |
f0706e82 | 645 | |
c868cb35 | 646 | void sta_info_recalc_tim(struct sta_info *sta); |
004c872e | 647 | |
7bedd0cf | 648 | int sta_info_init(struct ieee80211_local *local); |
d0709a65 | 649 | void sta_info_stop(struct ieee80211_local *local); |
051007d9 JB |
650 | |
651 | /** | |
652 | * sta_info_flush - flush matching STA entries from the STA table | |
653 | * | |
654 | * Returns the number of removed STA entries. | |
655 | * | |
656 | * @sdata: sdata to remove all stations from | |
e716251d | 657 | * @vlans: if the given interface is an AP interface, also flush VLANs |
051007d9 | 658 | */ |
e716251d JB |
659 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
660 | ||
661 | static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) | |
662 | { | |
663 | return __sta_info_flush(sdata, false); | |
664 | } | |
051007d9 | 665 | |
6b62bf32 TP |
666 | void sta_set_rate_info_tx(struct sta_info *sta, |
667 | const struct ieee80211_tx_rate *rate, | |
668 | struct rate_info *rinfo); | |
b7ffbd7e JB |
669 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo); |
670 | ||
24723d1b JB |
671 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
672 | unsigned long exp_time); | |
687da132 | 673 | u8 sta_info_tx_streams(struct sta_info *sta); |
d0709a65 | 674 | |
af818581 JB |
675 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
676 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
47086fc5 | 677 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
af818581 | 678 | |
f0706e82 | 679 | #endif /* STA_INFO_H */ |