Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f0706e82 JB |
2 | /* |
3 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
d98ad83e | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
dcba665b | 6 | * Copyright (C) 2015 - 2017 Intel Deutschland GmbH |
f66c48af | 7 | * Copyright (C) 2018-2022 Intel Corporation |
f0706e82 JB |
8 | */ |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/init.h> | |
888d04df | 12 | #include <linux/etherdevice.h> |
f0706e82 JB |
13 | #include <linux/netdevice.h> |
14 | #include <linux/types.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/skbuff.h> | |
17 | #include <linux/if_arp.h> | |
0d174406 | 18 | #include <linux/timer.h> |
d0709a65 | 19 | #include <linux/rtnetlink.h> |
f0706e82 | 20 | |
484a54c2 | 21 | #include <net/codel.h> |
f0706e82 JB |
22 | #include <net/mac80211.h> |
23 | #include "ieee80211_i.h" | |
24487981 | 24 | #include "driver-ops.h" |
2c8dccc7 | 25 | #include "rate.h" |
f0706e82 | 26 | #include "sta_info.h" |
e9f207f0 | 27 | #include "debugfs_sta.h" |
ee385855 | 28 | #include "mesh.h" |
ce662b44 | 29 | #include "wme.h" |
f0706e82 | 30 | |
d0709a65 JB |
31 | /** |
32 | * DOC: STA information lifetime rules | |
33 | * | |
34 | * STA info structures (&struct sta_info) are managed in a hash table | |
35 | * for faster lookup and a list for iteration. They are managed using | |
36 | * RCU, i.e. access to the list and hash table is protected by RCU. | |
37 | * | |
34e89507 JB |
38 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
39 | * owns that structure. It must then insert it into the hash table using | |
40 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter | |
41 | * case (which acquires an rcu read section but must not be called from | |
42 | * within one) will the pointer still be valid after the call. Note that | |
43 | * the caller may not do much with the STA info before inserting it, in | |
44 | * particular, it may not start any mesh peer link management or add | |
45 | * encryption keys. | |
93e5deb1 JB |
46 | * |
47 | * When the insertion fails (sta_info_insert()) returns non-zero), the | |
48 | * structure will have been freed by sta_info_insert()! | |
d0709a65 | 49 | * |
34e89507 | 50 | * Station entries are added by mac80211 when you establish a link with a |
7e189a12 LR |
51 | * peer. This means different things for the different type of interfaces |
52 | * we support. For a regular station this mean we add the AP sta when we | |
25985edc | 53 | * receive an association response from the AP. For IBSS this occurs when |
34e89507 | 54 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
25985edc | 55 | * the peer immediately upon device open. When using AP mode we add stations |
34e89507 | 56 | * for each respective station upon request from userspace through nl80211. |
7e189a12 | 57 | * |
34e89507 JB |
58 | * In order to remove a STA info structure, various sta_info_destroy_*() |
59 | * calls are available. | |
d0709a65 | 60 | * |
34e89507 JB |
61 | * There is no concept of ownership on a STA entry, each structure is |
62 | * owned by the global hash table/list until it is removed. All users of | |
63 | * the structure need to be RCU protected so that the structure won't be | |
64 | * freed before they are done using it. | |
d0709a65 | 65 | */ |
f0706e82 | 66 | |
cb71f1d1 JB |
67 | struct sta_link_alloc { |
68 | struct link_sta_info info; | |
69 | struct ieee80211_link_sta sta; | |
c71420db | 70 | struct rcu_head rcu_head; |
cb71f1d1 JB |
71 | }; |
72 | ||
7bedd0cf JB |
73 | static const struct rhashtable_params sta_rht_params = { |
74 | .nelem_hint = 3, /* start small */ | |
caf22d31 | 75 | .automatic_shrinking = true, |
7bedd0cf | 76 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 77 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf | 78 | .key_len = ETH_ALEN, |
ebd82b39 | 79 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
7bedd0cf JB |
80 | }; |
81 | ||
ba6ddab9 JB |
82 | static const struct rhashtable_params link_sta_rht_params = { |
83 | .nelem_hint = 3, /* start small */ | |
84 | .automatic_shrinking = true, | |
85 | .head_offset = offsetof(struct link_sta_info, link_hash_node), | |
86 | .key_offset = offsetof(struct link_sta_info, addr), | |
87 | .key_len = ETH_ALEN, | |
88 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, | |
89 | }; | |
90 | ||
4d33960b | 91 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
92 | static int sta_info_hash_del(struct ieee80211_local *local, |
93 | struct sta_info *sta) | |
f0706e82 | 94 | { |
83e7e4ce HX |
95 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
96 | sta_rht_params); | |
f0706e82 JB |
97 | } |
98 | ||
f36fe0a2 JB |
99 | static int link_sta_info_hash_add(struct ieee80211_local *local, |
100 | struct link_sta_info *link_sta) | |
101 | { | |
177577db | 102 | lockdep_assert_held(&local->sta_mtx); |
f36fe0a2 JB |
103 | return rhltable_insert(&local->link_sta_hash, |
104 | &link_sta->link_hash_node, | |
105 | link_sta_rht_params); | |
106 | } | |
107 | ||
ba6ddab9 JB |
108 | static int link_sta_info_hash_del(struct ieee80211_local *local, |
109 | struct link_sta_info *link_sta) | |
110 | { | |
177577db | 111 | lockdep_assert_held(&local->sta_mtx); |
ba6ddab9 JB |
112 | return rhltable_remove(&local->link_sta_hash, |
113 | &link_sta->link_hash_node, | |
114 | link_sta_rht_params); | |
115 | } | |
116 | ||
5108ca82 | 117 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 118 | { |
b22cfcfc EP |
119 | int ac, i; |
120 | struct tid_ampdu_tx *tid_tx; | |
121 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
122 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 123 | struct ps_data *ps; |
b22cfcfc | 124 | |
e3685e03 | 125 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
126 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
127 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
128 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
129 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
130 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
131 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
132 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
133 | else |
134 | return; | |
b22cfcfc EP |
135 | |
136 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 137 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 138 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 139 | |
d012a605 | 140 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
141 | } |
142 | ||
107395f9 AW |
143 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
144 | struct txq_info *txqi; | |
adf8ed01 | 145 | |
107395f9 AW |
146 | if (!sta->sta.txq[i]) |
147 | continue; | |
adf8ed01 | 148 | |
107395f9 | 149 | txqi = to_txq_info(sta->sta.txq[i]); |
ba8c3d6f | 150 | |
107395f9 | 151 | ieee80211_txq_purge(local, txqi); |
ba8c3d6f FF |
152 | } |
153 | ||
b22cfcfc EP |
154 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
155 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
156 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
157 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
158 | } |
159 | ||
45b5028e TP |
160 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
161 | mesh_sta_cleanup(sta); | |
b22cfcfc | 162 | |
5ac2e350 | 163 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
164 | |
165 | /* | |
166 | * Destroy aggregation state here. It would be nice to wait for the | |
167 | * driver to finish aggregation stop and then clean up, but for now | |
168 | * drivers have to handle aggregation stop being requested, followed | |
169 | * directly by station destruction. | |
170 | */ | |
5a306f58 | 171 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 172 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
173 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
174 | if (!tid_tx) | |
175 | continue; | |
1f98ab7f | 176 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
177 | kfree(tid_tx); |
178 | } | |
5108ca82 | 179 | } |
b22cfcfc | 180 | |
5108ca82 JB |
181 | static void cleanup_single_sta(struct sta_info *sta) |
182 | { | |
183 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
184 | struct ieee80211_local *local = sdata->local; | |
185 | ||
186 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
187 | sta_info_free(local, sta); |
188 | } | |
189 | ||
83e7e4ce HX |
190 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
191 | const u8 *addr) | |
192 | { | |
193 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
194 | } | |
195 | ||
d0709a65 | 196 | /* protected by RCU */ |
abe60632 JB |
197 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
198 | const u8 *addr) | |
f0706e82 | 199 | { |
abe60632 | 200 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 201 | struct rhlist_head *tmp; |
60f4b626 | 202 | struct sta_info *sta; |
f0706e82 | 203 | |
60f4b626 | 204 | rcu_read_lock(); |
83e7e4ce | 205 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
206 | if (sta->sdata == sdata) { |
207 | rcu_read_unlock(); | |
208 | /* this is safe as the caller must already hold | |
209 | * another rcu read section or the mutex | |
210 | */ | |
211 | return sta; | |
212 | } | |
213 | } | |
214 | rcu_read_unlock(); | |
215 | return NULL; | |
43ba7e95 JB |
216 | } |
217 | ||
0e5ded5a FF |
218 | /* |
219 | * Get sta info either from the specified interface | |
220 | * or from one of its vlans | |
221 | */ | |
222 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
223 | const u8 *addr) | |
224 | { | |
225 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 226 | struct rhlist_head *tmp; |
0e5ded5a FF |
227 | struct sta_info *sta; |
228 | ||
7bedd0cf | 229 | rcu_read_lock(); |
83e7e4ce | 230 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
231 | if (sta->sdata == sdata || |
232 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
233 | rcu_read_unlock(); | |
234 | /* this is safe as the caller must already hold | |
235 | * another rcu read section or the mutex | |
236 | */ | |
237 | return sta; | |
238 | } | |
0e5ded5a | 239 | } |
7bedd0cf JB |
240 | rcu_read_unlock(); |
241 | return NULL; | |
0e5ded5a FF |
242 | } |
243 | ||
ba6ddab9 JB |
244 | struct rhlist_head *link_sta_info_hash_lookup(struct ieee80211_local *local, |
245 | const u8 *addr) | |
246 | { | |
247 | return rhltable_lookup(&local->link_sta_hash, addr, | |
248 | link_sta_rht_params); | |
249 | } | |
250 | ||
251 | struct link_sta_info * | |
252 | link_sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr) | |
253 | { | |
254 | struct ieee80211_local *local = sdata->local; | |
255 | struct rhlist_head *tmp; | |
256 | struct link_sta_info *link_sta; | |
257 | ||
258 | rcu_read_lock(); | |
259 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
260 | struct sta_info *sta = link_sta->sta; | |
261 | ||
262 | if (sta->sdata == sdata || | |
263 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
264 | rcu_read_unlock(); | |
265 | /* this is safe as the caller must already hold | |
266 | * another rcu read section or the mutex | |
267 | */ | |
268 | return link_sta; | |
269 | } | |
270 | } | |
271 | rcu_read_unlock(); | |
272 | return NULL; | |
273 | } | |
274 | ||
ffa9598e JB |
275 | struct ieee80211_sta * |
276 | ieee80211_find_sta_by_link_addrs(struct ieee80211_hw *hw, | |
277 | const u8 *addr, | |
278 | const u8 *localaddr, | |
279 | unsigned int *link_id) | |
280 | { | |
281 | struct ieee80211_local *local = hw_to_local(hw); | |
282 | struct link_sta_info *link_sta; | |
283 | struct rhlist_head *tmp; | |
284 | ||
285 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
286 | struct sta_info *sta = link_sta->sta; | |
287 | struct ieee80211_link_data *link; | |
288 | u8 _link_id = link_sta->link_id; | |
289 | ||
290 | if (!localaddr) { | |
291 | if (link_id) | |
292 | *link_id = _link_id; | |
293 | return &sta->sta; | |
294 | } | |
295 | ||
296 | link = rcu_dereference(sta->sdata->link[_link_id]); | |
297 | if (!link) | |
298 | continue; | |
299 | ||
300 | if (memcmp(link->conf->addr, localaddr, ETH_ALEN)) | |
301 | continue; | |
302 | ||
303 | if (link_id) | |
304 | *link_id = _link_id; | |
305 | return &sta->sta; | |
306 | } | |
307 | ||
308 | return NULL; | |
309 | } | |
310 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_link_addrs); | |
311 | ||
5072f73c THJ |
312 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
313 | const u8 *sta_addr, const u8 *vif_addr) | |
314 | { | |
315 | struct rhlist_head *tmp; | |
316 | struct sta_info *sta; | |
317 | ||
318 | for_each_sta_info(local, sta_addr, sta, tmp) { | |
319 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) | |
320 | return sta; | |
321 | } | |
322 | ||
323 | return NULL; | |
324 | } | |
325 | ||
3b53fde8 JB |
326 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
327 | int idx) | |
ee385855 | 328 | { |
3b53fde8 | 329 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
330 | struct sta_info *sta; |
331 | int i = 0; | |
332 | ||
8ca47eb9 MB |
333 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
334 | lockdep_is_held(&local->sta_mtx)) { | |
3b53fde8 | 335 | if (sdata != sta->sdata) |
2a8ca29a | 336 | continue; |
ee385855 LCC |
337 | if (i < idx) { |
338 | ++i; | |
339 | continue; | |
ee385855 | 340 | } |
2a8ca29a | 341 | return sta; |
ee385855 | 342 | } |
ee385855 LCC |
343 | |
344 | return NULL; | |
345 | } | |
f0706e82 | 346 | |
cb71f1d1 | 347 | static void sta_info_free_link(struct link_sta_info *link_sta) |
246b39e4 | 348 | { |
cb71f1d1 JB |
349 | free_percpu(link_sta->pcpu_rx_stats); |
350 | } | |
246b39e4 | 351 | |
ba6ddab9 JB |
352 | static void sta_remove_link(struct sta_info *sta, unsigned int link_id, |
353 | bool unhash) | |
cb71f1d1 JB |
354 | { |
355 | struct sta_link_alloc *alloc = NULL; | |
c71420db | 356 | struct link_sta_info *link_sta; |
246b39e4 | 357 | |
c71420db JB |
358 | link_sta = rcu_dereference_protected(sta->link[link_id], |
359 | lockdep_is_held(&sta->local->sta_mtx)); | |
360 | ||
361 | if (WARN_ON(!link_sta)) | |
cb71f1d1 JB |
362 | return; |
363 | ||
ba6ddab9 JB |
364 | if (unhash) |
365 | link_sta_info_hash_del(sta->local, link_sta); | |
366 | ||
d2caad52 BB |
367 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) |
368 | ieee80211_link_sta_debugfs_remove(link_sta); | |
369 | ||
c71420db JB |
370 | if (link_sta != &sta->deflink) |
371 | alloc = container_of(link_sta, typeof(*alloc), info); | |
cb71f1d1 JB |
372 | |
373 | sta->sta.valid_links &= ~BIT(link_id); | |
c71420db JB |
374 | RCU_INIT_POINTER(sta->link[link_id], NULL); |
375 | RCU_INIT_POINTER(sta->sta.link[link_id], NULL); | |
cb71f1d1 JB |
376 | if (alloc) { |
377 | sta_info_free_link(&alloc->info); | |
c71420db | 378 | kfree_rcu(alloc, rcu_head); |
246b39e4 | 379 | } |
4c51541d BB |
380 | |
381 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
246b39e4 JB |
382 | } |
383 | ||
93e5deb1 | 384 | /** |
d9a7ddb0 | 385 | * sta_info_free - free STA |
93e5deb1 | 386 | * |
6ef307bc | 387 | * @local: pointer to the global information |
93e5deb1 JB |
388 | * @sta: STA info to free |
389 | * | |
390 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
391 | * that may happen before sta_info_insert(). It may only be |
392 | * called when sta_info_insert() has not been attempted (and | |
393 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 394 | */ |
d9a7ddb0 | 395 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 396 | { |
cb71f1d1 JB |
397 | int i; |
398 | ||
399 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
400 | if (!(sta->sta.valid_links & BIT(i))) | |
401 | continue; | |
402 | ||
0ad49045 | 403 | sta_remove_link(sta, i, false); |
cb71f1d1 JB |
404 | } |
405 | ||
dcd479e1 JB |
406 | /* |
407 | * If we had used sta_info_pre_move_state() then we might not | |
408 | * have gone through the state transitions down again, so do | |
409 | * it here now (and warn if it's inserted). | |
410 | * | |
411 | * This will clear state such as fast TX/RX that may have been | |
412 | * allocated during state transitions. | |
413 | */ | |
414 | while (sta->sta_state > IEEE80211_STA_NONE) { | |
415 | int ret; | |
416 | ||
417 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
418 | ||
419 | ret = sta_info_move_state(sta, sta->sta_state - 1); | |
420 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) | |
421 | break; | |
422 | } | |
423 | ||
889cbb91 | 424 | if (sta->rate_ctrl) |
af65cd96 | 425 | rate_control_free_sta(sta); |
93e5deb1 | 426 | |
bdcbd8e0 | 427 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 428 | |
107395f9 | 429 | kfree(to_txq_info(sta->sta.txq[0])); |
53d04525 | 430 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
431 | #ifdef CONFIG_MAC80211_MESH |
432 | kfree(sta->mesh); | |
433 | #endif | |
246b39e4 | 434 | |
cb71f1d1 | 435 | sta_info_free_link(&sta->deflink); |
93e5deb1 JB |
436 | kfree(sta); |
437 | } | |
438 | ||
4d33960b | 439 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
440 | static int sta_info_hash_add(struct ieee80211_local *local, |
441 | struct sta_info *sta) | |
f0706e82 | 442 | { |
83e7e4ce HX |
443 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
444 | sta_rht_params); | |
f0706e82 | 445 | } |
f0706e82 | 446 | |
5ac2e350 | 447 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
448 | { |
449 | struct sta_info *sta; | |
450 | ||
5ac2e350 | 451 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
452 | |
453 | if (sta->dead) | |
454 | return; | |
455 | ||
5ac2e350 JB |
456 | local_bh_disable(); |
457 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 458 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 459 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 460 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 461 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 462 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 463 | local_bh_enable(); |
af818581 JB |
464 | } |
465 | ||
af65cd96 JB |
466 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
467 | struct sta_info *sta, gfp_t gfp) | |
468 | { | |
30686bf7 | 469 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
470 | return 0; |
471 | ||
889cbb91 | 472 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 473 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 474 | sta, gfp); |
889cbb91 | 475 | if (!sta->rate_ctrl_priv) |
af65cd96 | 476 | return -ENOMEM; |
af65cd96 JB |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
cb71f1d1 JB |
481 | static int sta_info_alloc_link(struct ieee80211_local *local, |
482 | struct link_sta_info *link_info, | |
483 | gfp_t gfp) | |
246b39e4 | 484 | { |
246b39e4 JB |
485 | struct ieee80211_hw *hw = &local->hw; |
486 | int i; | |
487 | ||
246b39e4 JB |
488 | if (ieee80211_hw_check(hw, USES_RSS)) { |
489 | link_info->pcpu_rx_stats = | |
490 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); | |
491 | if (!link_info->pcpu_rx_stats) | |
492 | return -ENOMEM; | |
493 | } | |
494 | ||
246b39e4 JB |
495 | link_info->rx_stats.last_rx = jiffies; |
496 | u64_stats_init(&link_info->rx_stats.syncp); | |
497 | ||
498 | ewma_signal_init(&link_info->rx_stats_avg.signal); | |
499 | ewma_avg_signal_init(&link_info->status_stats.avg_ack_signal); | |
500 | for (i = 0; i < ARRAY_SIZE(link_info->rx_stats_avg.chain_signal); i++) | |
501 | ewma_signal_init(&link_info->rx_stats_avg.chain_signal[i]); | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
cb71f1d1 JB |
506 | static void sta_info_add_link(struct sta_info *sta, |
507 | unsigned int link_id, | |
508 | struct link_sta_info *link_info, | |
509 | struct ieee80211_link_sta *link_sta) | |
510 | { | |
511 | link_info->sta = sta; | |
512 | link_info->link_id = link_id; | |
c71420db | 513 | link_info->pub = link_sta; |
1d9e4c91 | 514 | link_info->pub->sta = &sta->sta; |
c73993b8 | 515 | link_sta->link_id = link_id; |
c71420db JB |
516 | rcu_assign_pointer(sta->link[link_id], link_info); |
517 | rcu_assign_pointer(sta->sta.link[link_id], link_sta); | |
261ce887 BB |
518 | |
519 | link_sta->smps_mode = IEEE80211_SMPS_OFF; | |
4c51541d | 520 | link_sta->agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
cb71f1d1 JB |
521 | } |
522 | ||
f36fe0a2 JB |
523 | static struct sta_info * |
524 | __sta_info_alloc(struct ieee80211_sub_if_data *sdata, | |
525 | const u8 *addr, int link_id, const u8 *link_addr, | |
526 | gfp_t gfp) | |
f0706e82 | 527 | { |
d0709a65 | 528 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 529 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 530 | struct sta_info *sta; |
107395f9 AW |
531 | void *txq_data; |
532 | int size; | |
16c5f15c | 533 | int i; |
f0706e82 | 534 | |
ba8c3d6f | 535 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 536 | if (!sta) |
73651ee6 | 537 | return NULL; |
f0706e82 | 538 | |
246b39e4 JB |
539 | sta->local = local; |
540 | sta->sdata = sdata; | |
541 | ||
cb71f1d1 | 542 | if (sta_info_alloc_link(local, &sta->deflink, gfp)) |
36fe8e4e | 543 | goto free; |
c9c5962b | 544 | |
cb71f1d1 JB |
545 | if (link_id >= 0) { |
546 | sta_info_add_link(sta, link_id, &sta->deflink, | |
547 | &sta->sta.deflink); | |
548 | sta->sta.valid_links = BIT(link_id); | |
549 | } else { | |
550 | sta_info_add_link(sta, 0, &sta->deflink, &sta->sta.deflink); | |
551 | } | |
552 | ||
4c51541d BB |
553 | sta->sta.cur = &sta->sta.deflink.agg; |
554 | ||
07346f81 | 555 | spin_lock_init(&sta->lock); |
1d147bfa | 556 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 557 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 558 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 559 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 560 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
561 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
562 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
563 | if (!sta->mesh) | |
564 | goto free; | |
4c02d62f | 565 | sta->mesh->plink_sta = sta; |
433f5bc1 | 566 | spin_lock_init(&sta->mesh->plink_lock); |
45d33746 | 567 | if (!sdata->u.mesh.user_mpm) |
4c02d62f KC |
568 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
569 | 0); | |
433f5bc1 JB |
570 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
571 | } | |
87f59c70 | 572 | #endif |
07346f81 | 573 | |
ac100ce5 | 574 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 575 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
f36fe0a2 JB |
576 | memcpy(sta->deflink.addr, link_addr, ETH_ALEN); |
577 | memcpy(sta->sta.deflink.addr, link_addr, ETH_ALEN); | |
480dd46b MA |
578 | sta->sta.max_rx_aggregation_subframes = |
579 | local->hw.max_rx_aggregation_subframes; | |
580 | ||
046d2e7c S |
581 | /* TODO link specific alloc and assignments for MLO Link STA */ |
582 | ||
96fc6efb AW |
583 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
584 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
585 | * references to is not NULL. To not use the initial Rx-only key | |
586 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
587 | * which always will refer to a NULL key. | |
588 | */ | |
589 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
590 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
591 | ||
0f9c5a61 | 592 | |
3a11ce08 JB |
593 | ieee80211_init_frag_cache(&sta->frags); |
594 | ||
71ec375c JB |
595 | sta->sta_state = IEEE80211_STA_NONE; |
596 | ||
6e4c0d04 FF |
597 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
598 | sta->amsdu_mesh_control = -1; | |
599 | ||
b6da911b LK |
600 | /* Mark TID as unreserved */ |
601 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
602 | ||
84b00607 | 603 | sta->last_connected = ktime_get_seconds(); |
541a45a1 | 604 | |
107395f9 AW |
605 | size = sizeof(struct txq_info) + |
606 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
ba8c3d6f | 607 | |
107395f9 AW |
608 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); |
609 | if (!txq_data) | |
610 | goto free; | |
ba8c3d6f | 611 | |
107395f9 AW |
612 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
613 | struct txq_info *txq = txq_data + i * size; | |
ba8c3d6f | 614 | |
107395f9 AW |
615 | /* might not do anything for the (bufferable) MMPDU TXQ */ |
616 | ieee80211_txq_init(sdata, sta, txq, i); | |
abfbc3af | 617 | } |
f0706e82 | 618 | |
ba8c3d6f FF |
619 | if (sta_prepare_rate_control(local, sta, gfp)) |
620 | goto free_txq; | |
621 | ||
942741da | 622 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
b4809e94 | 623 | |
948d887d JB |
624 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
625 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
626 | skb_queue_head_init(&sta->tx_filtered[i]); | |
942741da FF |
627 | sta->airtime[i].deficit = sta->airtime_weight; |
628 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); | |
629 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; | |
630 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; | |
948d887d | 631 | } |
73651ee6 | 632 | |
5a306f58 | 633 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 634 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 635 | |
bd718fc1 JB |
636 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
637 | u32 mandatory = 0; | |
638 | int r; | |
639 | ||
640 | if (!hw->wiphy->bands[i]) | |
641 | continue; | |
642 | ||
643 | switch (i) { | |
644 | case NL80211_BAND_2GHZ: | |
63fa0426 | 645 | case NL80211_BAND_LC: |
bd718fc1 JB |
646 | /* |
647 | * We use both here, even if we cannot really know for | |
648 | * sure the station will support both, but the only use | |
649 | * for this is when we don't know anything yet and send | |
650 | * management frames, and then we'll pick the lowest | |
651 | * possible rate anyway. | |
652 | * If we don't include _G here, we cannot find a rate | |
653 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
654 | */ | |
655 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
656 | IEEE80211_RATE_MANDATORY_G; | |
657 | break; | |
658 | case NL80211_BAND_5GHZ: | |
659 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
660 | break; | |
661 | case NL80211_BAND_60GHZ: | |
662 | WARN_ON(1); | |
663 | mandatory = 0; | |
664 | break; | |
665 | } | |
666 | ||
667 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
668 | struct ieee80211_rate *rate; | |
669 | ||
670 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
671 | ||
672 | if (!(rate->flags & mandatory)) | |
673 | continue; | |
046d2e7c | 674 | sta->sta.deflink.supp_rates[i] |= BIT(r); |
bd718fc1 JB |
675 | } |
676 | } | |
677 | ||
484a54c2 THJ |
678 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
679 | sta->cparams.target = MS2TIME(20); | |
680 | sta->cparams.interval = MS2TIME(100); | |
681 | sta->cparams.ecn = true; | |
dfcb63ce THJ |
682 | sta->cparams.ce_threshold_selector = 0; |
683 | sta->cparams.ce_threshold_mask = 0; | |
484a54c2 | 684 | |
bdcbd8e0 | 685 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 686 | |
abfbc3af | 687 | return sta; |
ba8c3d6f FF |
688 | |
689 | free_txq: | |
107395f9 | 690 | kfree(to_txq_info(sta->sta.txq[0])); |
ba8c3d6f | 691 | free: |
cb71f1d1 | 692 | sta_info_free_link(&sta->deflink); |
433f5bc1 JB |
693 | #ifdef CONFIG_MAC80211_MESH |
694 | kfree(sta->mesh); | |
695 | #endif | |
ba8c3d6f FF |
696 | kfree(sta); |
697 | return NULL; | |
73651ee6 JB |
698 | } |
699 | ||
f36fe0a2 JB |
700 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
701 | const u8 *addr, gfp_t gfp) | |
702 | { | |
703 | return __sta_info_alloc(sdata, addr, -1, addr, gfp); | |
704 | } | |
705 | ||
706 | struct sta_info *sta_info_alloc_with_link(struct ieee80211_sub_if_data *sdata, | |
707 | const u8 *mld_addr, | |
708 | unsigned int link_id, | |
709 | const u8 *link_addr, | |
710 | gfp_t gfp) | |
711 | { | |
712 | return __sta_info_alloc(sdata, mld_addr, link_id, link_addr, gfp); | |
713 | } | |
714 | ||
8c71df7a | 715 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 716 | { |
34e89507 | 717 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 718 | |
03e4497e JB |
719 | /* |
720 | * Can't be a WARN_ON because it can be triggered through a race: | |
721 | * something inserts a STA (on one CPU) without holding the RTNL | |
722 | * and another CPU turns off the net device. | |
723 | */ | |
8c71df7a GE |
724 | if (unlikely(!ieee80211_sdata_running(sdata))) |
725 | return -ENETDOWN; | |
03e4497e | 726 | |
b203ca39 | 727 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
deebea0a | 728 | !is_valid_ether_addr(sta->sta.addr))) |
8c71df7a GE |
729 | return -EINVAL; |
730 | ||
83e7e4ce HX |
731 | /* The RCU read lock is required by rhashtable due to |
732 | * asynchronous resize/rehash. We also require the mutex | |
733 | * for correctness. | |
31104891 JB |
734 | */ |
735 | rcu_read_lock(); | |
736 | lockdep_assert_held(&sdata->local->sta_mtx); | |
737 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
738 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
739 | rcu_read_unlock(); | |
740 | return -ENOTUNIQ; | |
741 | } | |
742 | rcu_read_unlock(); | |
743 | ||
8c71df7a GE |
744 | return 0; |
745 | } | |
746 | ||
f09603a2 JB |
747 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
748 | struct ieee80211_sub_if_data *sdata, | |
749 | struct sta_info *sta) | |
750 | { | |
751 | enum ieee80211_sta_state state; | |
752 | int err = 0; | |
753 | ||
754 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
755 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
756 | if (err) | |
757 | break; | |
758 | } | |
759 | ||
760 | if (!err) { | |
a4ec45a4 JB |
761 | /* |
762 | * Drivers using legacy sta_add/sta_remove callbacks only | |
763 | * get uploaded set to true after sta_add is called. | |
764 | */ | |
765 | if (!local->ops->sta_add) | |
766 | sta->uploaded = true; | |
f09603a2 JB |
767 | return 0; |
768 | } | |
769 | ||
770 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
771 | sdata_info(sdata, |
772 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
773 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
774 | err = 0; |
775 | } | |
776 | ||
777 | /* unwind on error */ | |
778 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
779 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
780 | ||
781 | return err; | |
782 | } | |
783 | ||
d405fd8c GG |
784 | static void |
785 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
786 | { | |
787 | struct ieee80211_local *local = sdata->local; | |
788 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
789 | struct sta_info *sta; | |
790 | ||
791 | rcu_read_lock(); | |
792 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
793 | if (sdata != sta->sdata || | |
794 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
795 | continue; | |
796 | if (!sta->sta.support_p2p_ps) { | |
797 | allow_p2p_go_ps = false; | |
798 | break; | |
799 | } | |
800 | } | |
801 | rcu_read_unlock(); | |
802 | ||
803 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
804 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
d8675a63 JB |
805 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
806 | BSS_CHANGED_P2P_PS); | |
d405fd8c GG |
807 | } |
808 | } | |
809 | ||
8c71df7a GE |
810 | /* |
811 | * should be called with sta_mtx locked | |
812 | * this function replaces the mutex lock | |
813 | * with a RCU lock | |
814 | */ | |
4d33960b | 815 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
816 | { |
817 | struct ieee80211_local *local = sta->local; | |
818 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 819 | struct station_info *sinfo = NULL; |
8c71df7a GE |
820 | int err = 0; |
821 | ||
822 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 823 | |
7852e361 JB |
824 | /* check if STA exists already */ |
825 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
826 | err = -EEXIST; | |
8f9dcc29 | 827 | goto out_cleanup; |
4d33960b | 828 | } |
32bfd35d | 829 | |
0c2e3842 KV |
830 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
831 | if (!sinfo) { | |
832 | err = -ENOMEM; | |
8f9dcc29 | 833 | goto out_cleanup; |
0c2e3842 KV |
834 | } |
835 | ||
7852e361 JB |
836 | local->num_sta++; |
837 | local->sta_generation++; | |
838 | smp_mb(); | |
4d33960b | 839 | |
5108ca82 JB |
840 | /* simplify things and don't accept BA sessions yet */ |
841 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
842 | ||
7852e361 | 843 | /* make the station visible */ |
62b14b24 JB |
844 | err = sta_info_hash_add(local, sta); |
845 | if (err) | |
846 | goto out_drop_sta; | |
83d5cc01 | 847 | |
f36fe0a2 JB |
848 | if (sta->sta.valid_links) { |
849 | err = link_sta_info_hash_add(local, &sta->deflink); | |
850 | if (err) { | |
851 | sta_info_hash_del(local, sta); | |
852 | goto out_drop_sta; | |
853 | } | |
854 | } | |
855 | ||
2bad7748 | 856 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 857 | |
4dde3c36 MG |
858 | /* update channel context before notifying the driver about state |
859 | * change, this enables driver using the updated channel context right away. | |
860 | */ | |
861 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
0cbf348a | 862 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
4dde3c36 MG |
863 | if (!sta->sta.support_p2p_ps) |
864 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
865 | } | |
866 | ||
5108ca82 JB |
867 | /* notify driver */ |
868 | err = sta_info_insert_drv_state(local, sdata, sta); | |
869 | if (err) | |
870 | goto out_remove; | |
871 | ||
7852e361 | 872 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c | 873 | |
5108ca82 JB |
874 | /* accept BA sessions now */ |
875 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 876 | |
7852e361 JB |
877 | ieee80211_sta_debugfs_add(sta); |
878 | rate_control_add_sta_debugfs(sta); | |
d2caad52 BB |
879 | if (sta->sta.valid_links) { |
880 | int i; | |
881 | ||
882 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
883 | struct link_sta_info *link_sta; | |
884 | ||
885 | link_sta = rcu_dereference_protected(sta->link[i], | |
886 | lockdep_is_held(&local->sta_mtx)); | |
887 | ||
888 | if (!link_sta) | |
889 | continue; | |
890 | ||
891 | ieee80211_link_sta_debugfs_add(link_sta); | |
892 | if (sdata->vif.active_links & BIT(i)) | |
893 | ieee80211_link_sta_debugfs_drv_add(link_sta); | |
894 | } | |
895 | } else { | |
896 | ieee80211_link_sta_debugfs_add(&sta->deflink); | |
897 | ieee80211_link_sta_debugfs_drv_add(&sta->deflink); | |
898 | } | |
4d33960b | 899 | |
0ef049dc AB |
900 | sinfo->generation = local->sta_generation; |
901 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
902 | kfree(sinfo); | |
d0709a65 | 903 | |
bdcbd8e0 | 904 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 905 | |
34e89507 JB |
906 | /* move reference to rcu-protected */ |
907 | rcu_read_lock(); | |
908 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 909 | |
73651ee6 JB |
910 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
911 | mesh_accept_plinks_update(sdata); | |
912 | ||
8c71df7a | 913 | return 0; |
5108ca82 | 914 | out_remove: |
0ad49045 JB |
915 | if (sta->sta.valid_links) |
916 | link_sta_info_hash_del(local, &sta->deflink); | |
5108ca82 JB |
917 | sta_info_hash_del(local, sta); |
918 | list_del_rcu(&sta->list); | |
62b14b24 | 919 | out_drop_sta: |
5108ca82 JB |
920 | local->num_sta--; |
921 | synchronize_net(); | |
8f9dcc29 | 922 | out_cleanup: |
7bc40aed | 923 | cleanup_single_sta(sta); |
4d33960b | 924 | mutex_unlock(&local->sta_mtx); |
ea32f065 | 925 | kfree(sinfo); |
4d33960b JB |
926 | rcu_read_lock(); |
927 | return err; | |
8c71df7a GE |
928 | } |
929 | ||
930 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
931 | { | |
932 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 933 | int err; |
8c71df7a | 934 | |
4d33960b JB |
935 | might_sleep(); |
936 | ||
31104891 JB |
937 | mutex_lock(&local->sta_mtx); |
938 | ||
8c71df7a GE |
939 | err = sta_info_insert_check(sta); |
940 | if (err) { | |
7bc40aed | 941 | sta_info_free(local, sta); |
31104891 | 942 | mutex_unlock(&local->sta_mtx); |
8c71df7a | 943 | rcu_read_lock(); |
7bc40aed | 944 | return err; |
8c71df7a GE |
945 | } |
946 | ||
7bc40aed | 947 | return sta_info_insert_finish(sta); |
f0706e82 JB |
948 | } |
949 | ||
34e89507 JB |
950 | int sta_info_insert(struct sta_info *sta) |
951 | { | |
952 | int err = sta_info_insert_rcu(sta); | |
953 | ||
954 | rcu_read_unlock(); | |
955 | ||
956 | return err; | |
957 | } | |
958 | ||
d012a605 | 959 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
960 | { |
961 | /* | |
962 | * This format has been mandated by the IEEE specifications, | |
963 | * so this line may not be changed to use the __set_bit() format. | |
964 | */ | |
d012a605 | 965 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
966 | } |
967 | ||
d012a605 | 968 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
969 | { |
970 | /* | |
971 | * This format has been mandated by the IEEE specifications, | |
972 | * so this line may not be changed to use the __clear_bit() format. | |
973 | */ | |
d012a605 | 974 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
975 | } |
976 | ||
3d5839b6 IP |
977 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
978 | { | |
979 | /* | |
980 | * This format has been mandated by the IEEE specifications, | |
981 | * so this line may not be changed to use the test_bit() format. | |
982 | */ | |
983 | return tim[id / 8] & (1 << (id % 8)); | |
984 | } | |
985 | ||
948d887d | 986 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 987 | { |
948d887d JB |
988 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
989 | switch (ac) { | |
990 | case IEEE80211_AC_VO: | |
991 | return BIT(6) | BIT(7); | |
992 | case IEEE80211_AC_VI: | |
993 | return BIT(4) | BIT(5); | |
994 | case IEEE80211_AC_BE: | |
995 | return BIT(0) | BIT(3); | |
996 | case IEEE80211_AC_BK: | |
997 | return BIT(1) | BIT(2); | |
998 | default: | |
999 | WARN_ON(1); | |
1000 | return 0; | |
d0709a65 | 1001 | } |
004c872e JB |
1002 | } |
1003 | ||
9b7a86f3 | 1004 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 1005 | { |
c868cb35 | 1006 | struct ieee80211_local *local = sta->local; |
d012a605 | 1007 | struct ps_data *ps; |
948d887d JB |
1008 | bool indicate_tim = false; |
1009 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
1010 | int ac; | |
a69bd8e6 | 1011 | u16 id = sta->sta.aid; |
d012a605 MP |
1012 | |
1013 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
1014 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
1015 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
1016 | return; | |
004c872e | 1017 | |
d012a605 | 1018 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
1019 | #ifdef CONFIG_MAC80211_MESH |
1020 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
1021 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 1022 | #endif |
d012a605 | 1023 | } else { |
c868cb35 | 1024 | return; |
d012a605 | 1025 | } |
3e122be0 | 1026 | |
c868cb35 | 1027 | /* No need to do anything if the driver does all */ |
d98937f4 | 1028 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 1029 | return; |
004c872e | 1030 | |
c868cb35 JB |
1031 | if (sta->dead) |
1032 | goto done; | |
3e122be0 | 1033 | |
948d887d JB |
1034 | /* |
1035 | * If all ACs are delivery-enabled then we should build | |
1036 | * the TIM bit for all ACs anyway; if only some are then | |
1037 | * we ignore those and build the TIM bit using only the | |
1038 | * non-enabled ones. | |
1039 | */ | |
1040 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
1041 | ignore_for_tim = 0; | |
1042 | ||
9b7a86f3 JB |
1043 | if (ignore_pending) |
1044 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
1045 | ||
948d887d JB |
1046 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1047 | unsigned long tids; | |
3e122be0 | 1048 | |
f438ceb8 | 1049 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1050 | continue; |
1051 | ||
1052 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
1053 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
1054 | if (indicate_tim) | |
1055 | break; | |
3e122be0 | 1056 | |
948d887d JB |
1057 | tids = ieee80211_tids_for_ac(ac); |
1058 | ||
1059 | indicate_tim |= | |
1060 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
1061 | indicate_tim |= |
1062 | sta->txq_buffered_tids & tids; | |
d0709a65 | 1063 | } |
004c872e | 1064 | |
c868cb35 | 1065 | done: |
65f704a5 | 1066 | spin_lock_bh(&local->tim_lock); |
004c872e | 1067 | |
3d5839b6 IP |
1068 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
1069 | goto out_unlock; | |
1070 | ||
948d887d | 1071 | if (indicate_tim) |
d012a605 | 1072 | __bss_tim_set(ps->tim, id); |
c868cb35 | 1073 | else |
d012a605 | 1074 | __bss_tim_clear(ps->tim, id); |
004c872e | 1075 | |
9b7a86f3 | 1076 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 1077 | local->tim_in_locked_section = true; |
948d887d | 1078 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
1079 | local->tim_in_locked_section = false; |
1080 | } | |
3e122be0 | 1081 | |
3d5839b6 | 1082 | out_unlock: |
65f704a5 | 1083 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
1084 | } |
1085 | ||
9b7a86f3 JB |
1086 | void sta_info_recalc_tim(struct sta_info *sta) |
1087 | { | |
1088 | __sta_info_recalc_tim(sta, false); | |
1089 | } | |
1090 | ||
cd0b8d89 | 1091 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 1092 | { |
e039fa4a | 1093 | struct ieee80211_tx_info *info; |
f0706e82 JB |
1094 | int timeout; |
1095 | ||
1096 | if (!skb) | |
cd0b8d89 | 1097 | return false; |
f0706e82 | 1098 | |
e039fa4a | 1099 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
1100 | |
1101 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
1102 | timeout = (sta->listen_interval * |
1103 | sta->sdata->vif.bss_conf.beacon_int * | |
1104 | 32 / 15625) * HZ; | |
f0706e82 JB |
1105 | if (timeout < STA_TX_BUFFER_EXPIRE) |
1106 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 1107 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
1108 | } |
1109 | ||
1110 | ||
948d887d JB |
1111 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
1112 | struct sta_info *sta, int ac) | |
f0706e82 JB |
1113 | { |
1114 | unsigned long flags; | |
1115 | struct sk_buff *skb; | |
1116 | ||
60750397 JB |
1117 | /* |
1118 | * First check for frames that should expire on the filtered | |
1119 | * queue. Frames here were rejected by the driver and are on | |
1120 | * a separate queue to avoid reordering with normal PS-buffered | |
1121 | * frames. They also aren't accounted for right now in the | |
1122 | * total_ps_buffered counter. | |
1123 | */ | |
1124 | for (;;) { | |
948d887d JB |
1125 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
1126 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 1127 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1128 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
1129 | else |
1130 | skb = NULL; | |
948d887d | 1131 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
1132 | |
1133 | /* | |
1134 | * Frames are queued in order, so if this one | |
1135 | * hasn't expired yet we can stop testing. If | |
1136 | * we actually reached the end of the queue we | |
1137 | * also need to stop, of course. | |
1138 | */ | |
1139 | if (!skb) | |
1140 | break; | |
d4fa14cd | 1141 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
1142 | } |
1143 | ||
1144 | /* | |
1145 | * Now also check the normal PS-buffered queue, this will | |
1146 | * only find something if the filtered queue was emptied | |
1147 | * since the filtered frames are all before the normal PS | |
1148 | * buffered frames. | |
1149 | */ | |
f0706e82 | 1150 | for (;;) { |
948d887d JB |
1151 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
1152 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 1153 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1154 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 1155 | else |
f0706e82 | 1156 | skb = NULL; |
948d887d | 1157 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 1158 | |
60750397 JB |
1159 | /* |
1160 | * frames are queued in order, so if this one | |
1161 | * hasn't expired yet (or we reached the end of | |
1162 | * the queue) we can stop testing | |
1163 | */ | |
836341a7 | 1164 | if (!skb) |
f0706e82 | 1165 | break; |
836341a7 | 1166 | |
836341a7 | 1167 | local->total_ps_buffered--; |
bdcbd8e0 JB |
1168 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
1169 | sta->sta.addr); | |
d4fa14cd | 1170 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 1171 | } |
3393a608 | 1172 | |
60750397 JB |
1173 | /* |
1174 | * Finally, recalculate the TIM bit for this station -- it might | |
1175 | * now be clear because the station was too slow to retrieve its | |
1176 | * frames. | |
1177 | */ | |
1178 | sta_info_recalc_tim(sta); | |
1179 | ||
1180 | /* | |
1181 | * Return whether there are any frames still buffered, this is | |
1182 | * used to check whether the cleanup timer still needs to run, | |
1183 | * if there are no frames we don't need to rearm the timer. | |
1184 | */ | |
948d887d JB |
1185 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
1186 | skb_queue_empty(&sta->tx_filtered[ac])); | |
1187 | } | |
1188 | ||
1189 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
1190 | struct sta_info *sta) | |
1191 | { | |
1192 | bool have_buffered = false; | |
1193 | int ac; | |
1194 | ||
3f52b7e3 MP |
1195 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
1196 | if (!sta->sdata->bss && | |
1197 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
1198 | return false; |
1199 | ||
1200 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1201 | have_buffered |= | |
1202 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
1203 | ||
1204 | return have_buffered; | |
f0706e82 JB |
1205 | } |
1206 | ||
d778207b | 1207 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 1208 | { |
34e89507 JB |
1209 | struct ieee80211_local *local; |
1210 | struct ieee80211_sub_if_data *sdata; | |
0ad49045 | 1211 | int ret, i; |
f0706e82 | 1212 | |
34e89507 | 1213 | might_sleep(); |
f0706e82 | 1214 | |
34e89507 JB |
1215 | if (!sta) |
1216 | return -ENOENT; | |
5bb644a0 | 1217 | |
34e89507 JB |
1218 | local = sta->local; |
1219 | sdata = sta->sdata; | |
f0706e82 | 1220 | |
83d5cc01 JB |
1221 | lockdep_assert_held(&local->sta_mtx); |
1222 | ||
098a6070 JB |
1223 | /* |
1224 | * Before removing the station from the driver and | |
1225 | * rate control, it might still start new aggregation | |
1226 | * sessions -- block that to make sure the tear-down | |
1227 | * will be sufficient. | |
1228 | */ | |
c2c98fde | 1229 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1230 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1231 | |
f59374eb SS |
1232 | /* |
1233 | * Before removing the station from the driver there might be pending | |
1234 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1235 | * all such frames to be processed. | |
1236 | */ | |
1237 | drv_sync_rx_queues(local, sta); | |
1238 | ||
0ad49045 JB |
1239 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { |
1240 | struct link_sta_info *link_sta; | |
1241 | ||
1242 | if (!(sta->sta.valid_links & BIT(i))) | |
1243 | continue; | |
1244 | ||
1245 | link_sta = rcu_dereference_protected(sta->link[i], | |
1246 | lockdep_is_held(&local->sta_mtx)); | |
1247 | ||
1248 | link_sta_info_hash_del(local, link_sta); | |
1249 | } | |
1250 | ||
34e89507 | 1251 | ret = sta_info_hash_del(local, sta); |
b01711be | 1252 | if (WARN_ON(ret)) |
34e89507 JB |
1253 | return ret; |
1254 | ||
a7a6bdd0 AN |
1255 | /* |
1256 | * for TDLS peers, make sure to return to the base channel before | |
1257 | * removal. | |
1258 | */ | |
1259 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1260 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1261 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1262 | } | |
1263 | ||
794454ce | 1264 | list_del_rcu(&sta->list); |
ef044763 | 1265 | sta->removed = true; |
4d33960b | 1266 | |
12b220a6 FF |
1267 | if (sta->uploaded) |
1268 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); | |
6a9d1b91 | 1269 | |
a710c816 JB |
1270 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1271 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1272 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1273 | ||
d778207b JB |
1274 | return 0; |
1275 | } | |
1276 | ||
1277 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1278 | { | |
1279 | struct ieee80211_local *local = sta->local; | |
1280 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1281 | struct station_info *sinfo; |
d778207b JB |
1282 | int ret; |
1283 | ||
1284 | /* | |
1285 | * NOTE: This assumes at least synchronize_net() was done | |
1286 | * after _part1 and before _part2! | |
1287 | */ | |
1288 | ||
1289 | might_sleep(); | |
1290 | lockdep_assert_held(&local->sta_mtx); | |
1291 | ||
5981fe5b | 1292 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
b16798f5 JB |
1293 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
1294 | WARN_ON_ONCE(ret); | |
1295 | } | |
1296 | ||
0b75a1b1 JB |
1297 | /* Flush queues before removing keys, as that might remove them |
1298 | * from hardware, and then depending on the offload method, any | |
1299 | * frames sitting on hardware queues might be sent out without | |
1300 | * any encryption at all. | |
1301 | */ | |
d00800a2 JB |
1302 | if (local->ops->set_key) { |
1303 | if (local->ops->flush_sta) | |
1304 | drv_flush_sta(local, sta->sdata, sta); | |
1305 | else | |
1306 | ieee80211_flush_queues(local, sta->sdata, false); | |
1307 | } | |
0b75a1b1 | 1308 | |
c8782078 | 1309 | /* now keys can no longer be reached */ |
6d10e46b | 1310 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1311 | |
9b7a86f3 JB |
1312 | /* disable TIM bit - last chance to tell driver */ |
1313 | __sta_info_recalc_tim(sta, true); | |
1314 | ||
34e89507 JB |
1315 | sta->dead = true; |
1316 | ||
34e89507 JB |
1317 | local->num_sta--; |
1318 | local->sta_generation++; | |
1319 | ||
83d5cc01 | 1320 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1321 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1322 | if (ret) { | |
83d5cc01 JB |
1323 | WARN_ON_ONCE(1); |
1324 | break; | |
1325 | } | |
1326 | } | |
d9a7ddb0 | 1327 | |
f09603a2 | 1328 | if (sta->uploaded) { |
f09603a2 JB |
1329 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1330 | IEEE80211_STA_NOTEXIST); | |
1331 | WARN_ON_ONCE(ret != 0); | |
1332 | } | |
34e89507 | 1333 | |
bdcbd8e0 JB |
1334 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1335 | ||
0ef049dc AB |
1336 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1337 | if (sinfo) | |
0fdf1493 | 1338 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1339 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1340 | kfree(sinfo); | |
ec15e68b | 1341 | |
34e89507 JB |
1342 | ieee80211_sta_debugfs_remove(sta); |
1343 | ||
3a11ce08 JB |
1344 | ieee80211_destroy_frag_cache(&sta->frags); |
1345 | ||
d34ba216 | 1346 | cleanup_single_sta(sta); |
d778207b JB |
1347 | } |
1348 | ||
1349 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1350 | { | |
1351 | int err = __sta_info_destroy_part1(sta); | |
1352 | ||
1353 | if (err) | |
1354 | return err; | |
1355 | ||
1356 | synchronize_net(); | |
1357 | ||
1358 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1359 | |
1360 | return 0; | |
4d6141c3 JS |
1361 | } |
1362 | ||
34e89507 | 1363 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1364 | { |
34e89507 JB |
1365 | struct sta_info *sta; |
1366 | int ret; | |
4d6141c3 | 1367 | |
34e89507 | 1368 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1369 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1370 | ret = __sta_info_destroy(sta); |
1371 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1372 | |
1373 | return ret; | |
1374 | } | |
1375 | ||
34e89507 JB |
1376 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1377 | const u8 *addr) | |
e9f207f0 | 1378 | { |
34e89507 JB |
1379 | struct sta_info *sta; |
1380 | int ret; | |
e9f207f0 | 1381 | |
34e89507 | 1382 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1383 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1384 | ret = __sta_info_destroy(sta); |
1385 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1386 | |
34e89507 JB |
1387 | return ret; |
1388 | } | |
e9f207f0 | 1389 | |
34f11cd3 | 1390 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1391 | { |
34f11cd3 | 1392 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1393 | struct sta_info *sta; |
3393a608 | 1394 | bool timer_needed = false; |
34e89507 JB |
1395 | |
1396 | rcu_read_lock(); | |
1397 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1398 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1399 | timer_needed = true; | |
34e89507 | 1400 | rcu_read_unlock(); |
e9f207f0 | 1401 | |
34e89507 JB |
1402 | if (local->quiescing) |
1403 | return; | |
d0709a65 | 1404 | |
3393a608 JO |
1405 | if (!timer_needed) |
1406 | return; | |
1407 | ||
26d59535 JB |
1408 | mod_timer(&local->sta_cleanup, |
1409 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1410 | } |
e9f207f0 | 1411 | |
7bedd0cf JB |
1412 | int sta_info_init(struct ieee80211_local *local) |
1413 | { | |
1414 | int err; | |
1415 | ||
83e7e4ce | 1416 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1417 | if (err) |
1418 | return err; | |
1419 | ||
ba6ddab9 JB |
1420 | err = rhltable_init(&local->link_sta_hash, &link_sta_rht_params); |
1421 | if (err) { | |
1422 | rhltable_destroy(&local->sta_hash); | |
1423 | return err; | |
1424 | } | |
1425 | ||
4d33960b | 1426 | spin_lock_init(&local->tim_lock); |
34e89507 | 1427 | mutex_init(&local->sta_mtx); |
f0706e82 | 1428 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1429 | |
34f11cd3 | 1430 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1431 | return 0; |
f0706e82 JB |
1432 | } |
1433 | ||
1434 | void sta_info_stop(struct ieee80211_local *local) | |
1435 | { | |
a56f992c | 1436 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1437 | rhltable_destroy(&local->sta_hash); |
ba6ddab9 | 1438 | rhltable_destroy(&local->link_sta_hash); |
f0706e82 JB |
1439 | } |
1440 | ||
051007d9 | 1441 | |
e716251d | 1442 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1443 | { |
b998e8bb | 1444 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1445 | struct sta_info *sta, *tmp; |
d778207b | 1446 | LIST_HEAD(free_list); |
44213b5e | 1447 | int ret = 0; |
f0706e82 | 1448 | |
d0709a65 | 1449 | might_sleep(); |
be8755e1 | 1450 | |
e716251d JB |
1451 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1452 | WARN_ON(vlans && !sdata->bss); | |
1453 | ||
34e89507 | 1454 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1455 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1456 | if (sdata == sta->sdata || |
1457 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1458 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1459 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1460 | ret++; |
1461 | } | |
be8755e1 | 1462 | } |
d778207b JB |
1463 | |
1464 | if (!list_empty(&free_list)) { | |
1465 | synchronize_net(); | |
1466 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1467 | __sta_info_destroy_part2(sta); | |
1468 | } | |
34e89507 | 1469 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1470 | |
051007d9 JB |
1471 | return ret; |
1472 | } | |
1473 | ||
24723d1b JB |
1474 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1475 | unsigned long exp_time) | |
1476 | { | |
1477 | struct ieee80211_local *local = sdata->local; | |
1478 | struct sta_info *sta, *tmp; | |
24723d1b | 1479 | |
34e89507 | 1480 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1481 | |
1482 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1483 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1484 | ||
ec2b774e ML |
1485 | if (sdata != sta->sdata) |
1486 | continue; | |
1487 | ||
b8da6b6a | 1488 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1489 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1490 | sta->sta.addr); | |
3f52b7e3 MP |
1491 | |
1492 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1493 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1494 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1495 | ||
34e89507 | 1496 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1497 | } |
e46a2cf9 MSS |
1498 | } |
1499 | ||
34e89507 | 1500 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1501 | } |
17741cdc | 1502 | |
686b9cb9 | 1503 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1504 | const u8 *addr, |
1505 | const u8 *localaddr) | |
17741cdc | 1506 | { |
7bedd0cf | 1507 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1508 | struct rhlist_head *tmp; |
7bedd0cf | 1509 | struct sta_info *sta; |
17741cdc | 1510 | |
686b9cb9 BG |
1511 | /* |
1512 | * Just return a random station if localaddr is NULL | |
1513 | * ... first in list. | |
1514 | */ | |
83e7e4ce | 1515 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1516 | if (localaddr && |
b203ca39 | 1517 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1518 | continue; |
f7c65594 JB |
1519 | if (!sta->uploaded) |
1520 | return NULL; | |
abe60632 | 1521 | return &sta->sta; |
f7c65594 JB |
1522 | } |
1523 | ||
abe60632 | 1524 | return NULL; |
17741cdc | 1525 | } |
686b9cb9 | 1526 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1527 | |
1528 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1529 | const u8 *addr) | |
1530 | { | |
f7c65594 | 1531 | struct sta_info *sta; |
5ed176e1 JB |
1532 | |
1533 | if (!vif) | |
1534 | return NULL; | |
1535 | ||
f7c65594 JB |
1536 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1537 | if (!sta) | |
1538 | return NULL; | |
1539 | ||
1540 | if (!sta->uploaded) | |
1541 | return NULL; | |
5ed176e1 | 1542 | |
f7c65594 | 1543 | return &sta->sta; |
5ed176e1 | 1544 | } |
17741cdc | 1545 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1546 | |
e3685e03 JB |
1547 | /* powersave support code */ |
1548 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1549 | { |
608383bf | 1550 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1551 | struct ieee80211_local *local = sdata->local; |
1552 | struct sk_buff_head pending; | |
ba8c3d6f | 1553 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1554 | unsigned long flags; |
d012a605 MP |
1555 | struct ps_data *ps; |
1556 | ||
3918edb0 FF |
1557 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1558 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1559 | u.ap); | |
1560 | ||
1561 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1562 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1563 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1564 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1565 | else |
1566 | return; | |
50a9432d | 1567 | |
c2c98fde | 1568 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1569 | |
5a306f58 | 1570 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1571 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1572 | sta->txq_buffered_tids = 0; |
af818581 | 1573 | |
30686bf7 | 1574 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1575 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1576 | |
adf8ed01 JB |
1577 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1578 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1579 | continue; | |
ba8c3d6f | 1580 | |
18667600 | 1581 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1582 | } |
1583 | ||
948d887d | 1584 | skb_queue_head_init(&pending); |
af818581 | 1585 | |
1d147bfa EG |
1586 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1587 | spin_lock(&sta->ps_lock); | |
af818581 | 1588 | /* Send all buffered frames to the station */ |
948d887d JB |
1589 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1590 | int count = skb_queue_len(&pending), tmp; | |
1591 | ||
987c285c | 1592 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1593 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1594 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1595 | tmp = skb_queue_len(&pending); |
1596 | filtered += tmp - count; | |
1597 | count = tmp; | |
1598 | ||
987c285c | 1599 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1600 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1601 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1602 | tmp = skb_queue_len(&pending); |
1603 | buffered += tmp - count; | |
1604 | } | |
1605 | ||
e3685e03 | 1606 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1607 | |
1608 | /* now we're no longer in the deliver code */ | |
1609 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1610 | ||
1611 | /* The station might have polled and then woken up before we responded, | |
1612 | * so clear these flags now to avoid them sticking around. | |
1613 | */ | |
1614 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1615 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1616 | spin_unlock(&sta->ps_lock); |
948d887d | 1617 | |
e3685e03 JB |
1618 | atomic_dec(&ps->num_sta_ps); |
1619 | ||
af818581 JB |
1620 | local->total_ps_buffered -= buffered; |
1621 | ||
c868cb35 JB |
1622 | sta_info_recalc_tim(sta); |
1623 | ||
bdcbd8e0 | 1624 | ps_dbg(sdata, |
2595d259 | 1625 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1626 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1627 | |
1628 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1629 | } |
1630 | ||
0ead2510 | 1631 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1632 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1633 | bool call_driver, bool more_data) |
af818581 | 1634 | { |
0ead2510 | 1635 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1636 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1637 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1638 | struct sk_buff *skb; |
ce662b44 JB |
1639 | int size = sizeof(*nullfunc); |
1640 | __le16 fc; | |
a74a8c84 | 1641 | bool qos = sta->sta.wme; |
ce662b44 | 1642 | struct ieee80211_tx_info *info; |
55de908a | 1643 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1644 | |
ce662b44 JB |
1645 | if (qos) { |
1646 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1647 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1648 | IEEE80211_FCTL_FROMDS); | |
1649 | } else { | |
1650 | size -= 2; | |
1651 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1652 | IEEE80211_STYPE_NULLFUNC | | |
1653 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1654 | } |
af818581 | 1655 | |
ce662b44 JB |
1656 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1657 | if (!skb) | |
1658 | return; | |
1659 | ||
1660 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1661 | ||
4df864c1 | 1662 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1663 | nullfunc->frame_control = fc; |
1664 | nullfunc->duration_id = 0; | |
1665 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1666 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1667 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1668 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1669 | |
59b66255 JB |
1670 | skb->priority = tid; |
1671 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1672 | if (qos) { |
ce662b44 JB |
1673 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1674 | ||
0ead2510 | 1675 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1676 | nullfunc->qos_ctrl |= |
1677 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1678 | if (more_data) |
1679 | nullfunc->frame_control |= | |
1680 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1681 | } | |
ce662b44 JB |
1682 | } |
1683 | ||
1684 | info = IEEE80211_SKB_CB(skb); | |
1685 | ||
1686 | /* | |
1687 | * Tell TX path to send this frame even though the | |
1688 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1689 | * exchange. Also set EOSP to indicate this packet |
1690 | * ends the poll/service period. | |
ce662b44 | 1691 | */ |
02f2f1a9 | 1692 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1693 | IEEE80211_TX_STATUS_EOSP | |
1694 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1695 | |
6b127c71 SM |
1696 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1697 | ||
b77cf4f8 JB |
1698 | if (call_driver) |
1699 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1700 | reason, false); | |
40b96408 | 1701 | |
89afe614 JB |
1702 | skb->dev = sdata->dev; |
1703 | ||
55de908a | 1704 | rcu_read_lock(); |
d0a9123e | 1705 | chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
55de908a JB |
1706 | if (WARN_ON(!chanctx_conf)) { |
1707 | rcu_read_unlock(); | |
1708 | kfree_skb(skb); | |
1709 | return; | |
1710 | } | |
1711 | ||
73c4e195 | 1712 | info->band = chanctx_conf->def.chan->band; |
08aca29a | 1713 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1714 | rcu_read_unlock(); |
ce662b44 JB |
1715 | } |
1716 | ||
0a1cb809 JB |
1717 | static int find_highest_prio_tid(unsigned long tids) |
1718 | { | |
1719 | /* lower 3 TIDs aren't ordered perfectly */ | |
1720 | if (tids & 0xF8) | |
1721 | return fls(tids) - 1; | |
1722 | /* TID 0 is BE just like TID 3 */ | |
1723 | if (tids & BIT(0)) | |
1724 | return 0; | |
1725 | return fls(tids) - 1; | |
1726 | } | |
1727 | ||
0ead2510 EG |
1728 | /* Indicates if the MORE_DATA bit should be set in the last |
1729 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1730 | * Note that driver_release_tids is relevant only if | |
1731 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1732 | */ | |
1733 | static bool | |
1734 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1735 | enum ieee80211_frame_release_type reason, | |
1736 | unsigned long driver_release_tids) | |
1737 | { | |
1738 | int ac; | |
1739 | ||
1740 | /* If the driver has data on more than one TID then | |
1741 | * certainly there's more data if we release just a | |
1742 | * single frame now (from a single TID). This will | |
1743 | * only happen for PS-Poll. | |
1744 | */ | |
1745 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1746 | hweight16(driver_release_tids) > 1) | |
1747 | return true; | |
1748 | ||
1749 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1750 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1751 | continue; |
1752 | ||
1753 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1754 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1755 | return true; | |
1756 | } | |
1757 | ||
1758 | return false; | |
1759 | } | |
1760 | ||
47086fc5 | 1761 | static void |
0ead2510 EG |
1762 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1763 | enum ieee80211_frame_release_type reason, | |
1764 | struct sk_buff_head *frames, | |
1765 | unsigned long *driver_release_tids) | |
af818581 JB |
1766 | { |
1767 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1768 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1769 | int ac; |
948d887d | 1770 | |
f9f760b4 | 1771 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1772 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1773 | unsigned long tids; |
1774 | ||
f438ceb8 | 1775 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1776 | continue; |
1777 | ||
4049e09a JB |
1778 | tids = ieee80211_tids_for_ac(ac); |
1779 | ||
f9f760b4 JB |
1780 | /* if we already have frames from software, then we can't also |
1781 | * release from hardware queues | |
1782 | */ | |
0ead2510 EG |
1783 | if (skb_queue_empty(frames)) { |
1784 | *driver_release_tids |= | |
1785 | sta->driver_buffered_tids & tids; | |
1786 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1787 | } |
948d887d | 1788 | |
0ead2510 | 1789 | if (!*driver_release_tids) { |
f9f760b4 JB |
1790 | struct sk_buff *skb; |
1791 | ||
1792 | while (n_frames > 0) { | |
1793 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1794 | if (!skb) { | |
1795 | skb = skb_dequeue( | |
1796 | &sta->ps_tx_buf[ac]); | |
1797 | if (skb) | |
1798 | local->total_ps_buffered--; | |
1799 | } | |
1800 | if (!skb) | |
1801 | break; | |
1802 | n_frames--; | |
0ead2510 | 1803 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1804 | } |
4049e09a | 1805 | } |
948d887d | 1806 | |
0ead2510 EG |
1807 | /* If we have more frames buffered on this AC, then abort the |
1808 | * loop since we can't send more data from other ACs before | |
1809 | * the buffered frames from this. | |
f9f760b4 | 1810 | */ |
948d887d | 1811 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1812 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1813 | break; |
af818581 | 1814 | } |
0ead2510 EG |
1815 | } |
1816 | ||
1817 | static void | |
1818 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1819 | int n_frames, u8 ignored_acs, | |
1820 | enum ieee80211_frame_release_type reason) | |
1821 | { | |
1822 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1823 | struct ieee80211_local *local = sdata->local; | |
1824 | unsigned long driver_release_tids = 0; | |
1825 | struct sk_buff_head frames; | |
1826 | bool more_data; | |
1827 | ||
1828 | /* Service or PS-Poll period starts */ | |
1829 | set_sta_flag(sta, WLAN_STA_SP); | |
1830 | ||
1831 | __skb_queue_head_init(&frames); | |
1832 | ||
1833 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1834 | &frames, &driver_release_tids); | |
1835 | ||
1836 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1837 | ||
1a57081a | 1838 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1839 | driver_release_tids = |
1840 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1841 | |
f9f760b4 | 1842 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1843 | int tid, ac; |
af818581 JB |
1844 | |
1845 | /* | |
ce662b44 JB |
1846 | * For PS-Poll, this can only happen due to a race condition |
1847 | * when we set the TIM bit and the station notices it, but | |
1848 | * before it can poll for the frame we expire it. | |
1849 | * | |
1850 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1851 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1852 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1853 | * more than the value specified in the Max SP Length field | |
1854 | * in the QoS Capability element from delivery-enabled ACs, | |
1855 | * that are destined for the non-AP STA. | |
1856 | * | |
1857 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1858 | */ |
af818581 | 1859 | |
ce662b44 | 1860 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1861 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1862 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1863 | break; | |
f438ceb8 | 1864 | tid = 7 - 2 * ac; |
af818581 | 1865 | |
0ead2510 | 1866 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1867 | } else if (!driver_release_tids) { |
47086fc5 JB |
1868 | struct sk_buff_head pending; |
1869 | struct sk_buff *skb; | |
40b96408 JB |
1870 | int num = 0; |
1871 | u16 tids = 0; | |
b77cf4f8 | 1872 | bool need_null = false; |
af818581 | 1873 | |
47086fc5 | 1874 | skb_queue_head_init(&pending); |
af818581 | 1875 | |
47086fc5 JB |
1876 | while ((skb = __skb_dequeue(&frames))) { |
1877 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1878 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1879 | u8 *qoshdr = NULL; |
1880 | ||
1881 | num++; | |
af818581 | 1882 | |
47086fc5 JB |
1883 | /* |
1884 | * Tell TX path to send this frame even though the | |
1885 | * STA may still remain is PS mode after this frame | |
1886 | * exchange. | |
1887 | */ | |
6b127c71 SM |
1888 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1889 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1890 | |
1891 | /* | |
1892 | * Use MoreData flag to indicate whether there are | |
1893 | * more buffered frames for this STA | |
1894 | */ | |
24b9c373 | 1895 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1896 | hdr->frame_control |= |
1897 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1898 | else |
1899 | hdr->frame_control &= | |
1900 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1901 | |
40b96408 JB |
1902 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1903 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1904 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1905 | ||
b77cf4f8 | 1906 | tids |= BIT(skb->priority); |
52a3f20c | 1907 | |
b77cf4f8 JB |
1908 | __skb_queue_tail(&pending, skb); |
1909 | ||
1910 | /* end service period after last frame or add one */ | |
1911 | if (!skb_queue_empty(&frames)) | |
1912 | continue; | |
1913 | ||
1914 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1915 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1916 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1917 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1918 | break; |
52a3f20c | 1919 | } |
deeaee19 | 1920 | |
b77cf4f8 JB |
1921 | /* For uAPSD, things are a bit more complicated. If the |
1922 | * last frame has a QoS header (i.e. is a QoS-data or | |
1923 | * QoS-nulldata frame) then just set the EOSP bit there | |
1924 | * and be done. | |
1925 | * If the frame doesn't have a QoS header (which means | |
1926 | * it should be a bufferable MMPDU) then we can't set | |
1927 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1928 | * frame to the list to send it after the MMPDU. | |
1929 | * | |
1930 | * Note that this code is only in the mac80211-release | |
1931 | * code path, we assume that the driver will not buffer | |
1932 | * anything but QoS-data frames, or if it does, will | |
1933 | * create the QoS-nulldata frame by itself if needed. | |
1934 | * | |
1935 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1936 | */ | |
1937 | if (qoshdr) { | |
1938 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1939 | |
b77cf4f8 JB |
1940 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1941 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1942 | } else { | |
1943 | /* The standard isn't completely clear on this | |
1944 | * as it says the more-data bit should be set | |
1945 | * if there are more BUs. The QoS-Null frame | |
1946 | * we're about to send isn't buffered yet, we | |
1947 | * only create it below, but let's pretend it | |
1948 | * was buffered just in case some clients only | |
1949 | * expect more-data=0 when eosp=1. | |
1950 | */ | |
1951 | hdr->frame_control |= | |
1952 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1953 | need_null = true; | |
1954 | num++; | |
1955 | } | |
1956 | break; | |
47086fc5 | 1957 | } |
af818581 | 1958 | |
40b96408 JB |
1959 | drv_allow_buffered_frames(local, sta, tids, num, |
1960 | reason, more_data); | |
1961 | ||
47086fc5 | 1962 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1963 | |
b77cf4f8 JB |
1964 | if (need_null) |
1965 | ieee80211_send_null_response( | |
0ead2510 EG |
1966 | sta, find_highest_prio_tid(tids), |
1967 | reason, false, false); | |
b77cf4f8 | 1968 | |
c868cb35 | 1969 | sta_info_recalc_tim(sta); |
af818581 | 1970 | } else { |
ba8c3d6f FF |
1971 | int tid; |
1972 | ||
af818581 | 1973 | /* |
4049e09a JB |
1974 | * We need to release a frame that is buffered somewhere in the |
1975 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1976 | * Note that the driver also has to check the number of frames |
1977 | * on the TIDs we're releasing from - if there are more than | |
1978 | * n_frames it has to set the more-data bit (if we didn't ask | |
1979 | * it to set it anyway due to other buffered frames); if there | |
1980 | * are fewer than n_frames it has to make sure to adjust that | |
1981 | * to allow the service period to end properly. | |
4049e09a JB |
1982 | */ |
1983 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1984 | n_frames, reason, more_data); |
4049e09a JB |
1985 | |
1986 | /* | |
1987 | * Note that we don't recalculate the TIM bit here as it would | |
1988 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1989 | * that the TID(s) became empty before returning here from the |
4049e09a | 1990 | * release function. |
f9f760b4 | 1991 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1992 | * became empty or we find that a txq became empty, we'll do the |
1993 | * TIM recalculation. | |
af818581 | 1994 | */ |
ba8c3d6f | 1995 | |
ba8c3d6f | 1996 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { |
adf8ed01 JB |
1997 | if (!sta->sta.txq[tid] || |
1998 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1999 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
2000 | continue; |
2001 | ||
2002 | sta_info_recalc_tim(sta); | |
2003 | break; | |
2004 | } | |
af818581 JB |
2005 | } |
2006 | } | |
2007 | ||
47086fc5 JB |
2008 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
2009 | { | |
2010 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
2011 | ||
2012 | /* | |
2013 | * If all ACs are delivery-enabled then we should reply | |
2014 | * from any of them, if only some are enabled we reply | |
2015 | * only from the non-enabled ones. | |
2016 | */ | |
2017 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
2018 | ignore_for_response = 0; | |
2019 | ||
2020 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
2021 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
2022 | } | |
2023 | ||
2024 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
2025 | { | |
2026 | int n_frames = sta->sta.max_sp; | |
2027 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
2028 | ||
2029 | /* | |
2030 | * If we ever grow support for TSPEC this might happen if | |
2031 | * the TSPEC update from hostapd comes in between a trigger | |
2032 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
2033 | * actually getting called. | |
2034 | */ | |
2035 | if (!delivery_enabled) | |
2036 | return; | |
2037 | ||
47086fc5 JB |
2038 | switch (sta->sta.max_sp) { |
2039 | case 1: | |
2040 | n_frames = 2; | |
2041 | break; | |
2042 | case 2: | |
2043 | n_frames = 4; | |
2044 | break; | |
2045 | case 3: | |
2046 | n_frames = 6; | |
2047 | break; | |
2048 | case 0: | |
2049 | /* XXX: what is a good value? */ | |
13a8098a | 2050 | n_frames = 128; |
47086fc5 JB |
2051 | break; |
2052 | } | |
2053 | ||
2054 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
2055 | IEEE80211_FRAME_RELEASE_UAPSD); | |
2056 | } | |
2057 | ||
af818581 JB |
2058 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
2059 | struct ieee80211_sta *pubsta, bool block) | |
2060 | { | |
2061 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2062 | ||
b5878a2d JB |
2063 | trace_api_sta_block_awake(sta->local, pubsta, block); |
2064 | ||
5ac2e350 | 2065 | if (block) { |
c2c98fde | 2066 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 2067 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
2068 | return; |
2069 | } | |
2070 | ||
2071 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
2072 | return; | |
2073 | ||
2074 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
2075 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
2076 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2077 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2078 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
2079 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
2080 | /* must be asleep in this case */ | |
2081 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2082 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2083 | } else { | |
2084 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 2085 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 2086 | } |
af818581 JB |
2087 | } |
2088 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 2089 | |
e943789e | 2090 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
2091 | { |
2092 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2093 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
2094 | |
2095 | trace_api_eosp(local, pubsta); | |
2096 | ||
e943789e | 2097 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 2098 | } |
e943789e | 2099 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 2100 | |
0ead2510 EG |
2101 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
2102 | { | |
2103 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2104 | enum ieee80211_frame_release_type reason; | |
2105 | bool more_data; | |
2106 | ||
2107 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
2108 | ||
2109 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
2110 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
2111 | reason, 0); | |
2112 | ||
2113 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
2114 | } | |
2115 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
2116 | ||
042ec453 JB |
2117 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
2118 | u8 tid, bool buffered) | |
dcf55fb5 FF |
2119 | { |
2120 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2121 | ||
5a306f58 | 2122 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
2123 | return; |
2124 | ||
1b000789 JB |
2125 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
2126 | ||
948d887d JB |
2127 | if (buffered) |
2128 | set_bit(tid, &sta->driver_buffered_tids); | |
2129 | else | |
2130 | clear_bit(tid, &sta->driver_buffered_tids); | |
2131 | ||
c868cb35 | 2132 | sta_info_recalc_tim(sta); |
dcf55fb5 | 2133 | } |
042ec453 | 2134 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 2135 | |
942741da FF |
2136 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
2137 | u32 tx_airtime, u32 rx_airtime) | |
b4809e94 | 2138 | { |
942741da FF |
2139 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
2140 | struct ieee80211_local *local = sta->sdata->local; | |
2141 | u8 ac = ieee80211_ac_from_tid(tid); | |
b4809e94 | 2142 | u32 airtime = 0; |
c77bfab9 | 2143 | u32 diff; |
b4809e94 | 2144 | |
942741da | 2145 | if (sta->local->airtime_flags & AIRTIME_USE_TX) |
b4809e94 | 2146 | airtime += tx_airtime; |
942741da | 2147 | if (sta->local->airtime_flags & AIRTIME_USE_RX) |
b4809e94 THJ |
2148 | airtime += rx_airtime; |
2149 | ||
942741da FF |
2150 | spin_lock_bh(&local->active_txq_lock[ac]); |
2151 | sta->airtime[ac].tx_airtime += tx_airtime; | |
2152 | sta->airtime[ac].rx_airtime += rx_airtime; | |
c77bfab9 FF |
2153 | |
2154 | diff = (u32)jiffies - sta->airtime[ac].last_active; | |
2155 | if (diff <= AIRTIME_ACTIVE_DURATION) | |
2156 | sta->airtime[ac].deficit -= airtime; | |
2157 | ||
942741da | 2158 | spin_unlock_bh(&local->active_txq_lock[ac]); |
b4809e94 THJ |
2159 | } |
2160 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
2161 | ||
9b41a9d7 | 2162 | void __ieee80211_sta_recalc_aggregates(struct sta_info *sta, u16 active_links) |
4c51541d | 2163 | { |
4c51541d | 2164 | bool first = true; |
9b41a9d7 | 2165 | int link_id; |
4c51541d | 2166 | |
9b41a9d7 JB |
2167 | if (!sta->sta.valid_links || !sta->sta.mlo) { |
2168 | sta->sta.cur = &sta->sta.deflink.agg; | |
4c51541d BB |
2169 | return; |
2170 | } | |
2171 | ||
2172 | rcu_read_lock(); | |
9b41a9d7 JB |
2173 | for (link_id = 0; link_id < ARRAY_SIZE((sta)->link); link_id++) { |
2174 | struct ieee80211_link_sta *link_sta; | |
2175 | int i; | |
2176 | ||
2177 | if (!(active_links & BIT(link_id))) | |
2178 | continue; | |
2179 | ||
2180 | link_sta = rcu_dereference(sta->sta.link[link_id]); | |
2181 | if (!link_sta) | |
2182 | continue; | |
2183 | ||
4c51541d | 2184 | if (first) { |
9b41a9d7 | 2185 | sta->cur = sta->sta.deflink.agg; |
4c51541d BB |
2186 | first = false; |
2187 | continue; | |
2188 | } | |
2189 | ||
2190 | sta->cur.max_amsdu_len = | |
2191 | min(sta->cur.max_amsdu_len, | |
2192 | link_sta->agg.max_amsdu_len); | |
2193 | sta->cur.max_rc_amsdu_len = | |
2194 | min(sta->cur.max_rc_amsdu_len, | |
2195 | link_sta->agg.max_rc_amsdu_len); | |
2196 | ||
2197 | for (i = 0; i < ARRAY_SIZE(sta->cur.max_tid_amsdu_len); i++) | |
2198 | sta->cur.max_tid_amsdu_len[i] = | |
2199 | min(sta->cur.max_tid_amsdu_len[i], | |
2200 | link_sta->agg.max_tid_amsdu_len[i]); | |
2201 | } | |
2202 | rcu_read_unlock(); | |
2203 | ||
9b41a9d7 JB |
2204 | sta->sta.cur = &sta->cur; |
2205 | } | |
2206 | ||
2207 | void ieee80211_sta_recalc_aggregates(struct ieee80211_sta *pubsta) | |
2208 | { | |
2209 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2210 | ||
2211 | __ieee80211_sta_recalc_aggregates(sta, sta->sdata->vif.active_links); | |
4c51541d BB |
2212 | } |
2213 | EXPORT_SYMBOL(ieee80211_sta_recalc_aggregates); | |
2214 | ||
3ace10f5 KY |
2215 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
2216 | struct sta_info *sta, u8 ac, | |
2217 | u16 tx_airtime, bool tx_completed) | |
2218 | { | |
2219 | int tx_pending; | |
2220 | ||
911bde0f THJ |
2221 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
2222 | return; | |
2223 | ||
3ace10f5 KY |
2224 | if (!tx_completed) { |
2225 | if (sta) | |
2226 | atomic_add(tx_airtime, | |
2227 | &sta->airtime[ac].aql_tx_pending); | |
2228 | ||
2229 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
8e4bac06 | 2230 | atomic_add(tx_airtime, &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2231 | return; |
2232 | } | |
2233 | ||
2234 | if (sta) { | |
2235 | tx_pending = atomic_sub_return(tx_airtime, | |
2236 | &sta->airtime[ac].aql_tx_pending); | |
04e35caa | 2237 | if (tx_pending < 0) |
3ace10f5 KY |
2238 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
2239 | tx_pending, 0); | |
2240 | } | |
2241 | ||
8e4bac06 | 2242 | atomic_sub(tx_airtime, &local->aql_total_pending_airtime); |
3ace10f5 | 2243 | tx_pending = atomic_sub_return(tx_airtime, |
8e4bac06 | 2244 | &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2245 | if (WARN_ONCE(tx_pending < 0, |
2246 | "Device %s AC %d pending airtime underflow: %u, %u", | |
2247 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
8e4bac06 FF |
2248 | tx_airtime)) { |
2249 | atomic_cmpxchg(&local->aql_ac_pending_airtime[ac], | |
3ace10f5 | 2250 | tx_pending, 0); |
8e4bac06 FF |
2251 | atomic_sub(tx_pending, &local->aql_total_pending_airtime); |
2252 | } | |
3ace10f5 KY |
2253 | } |
2254 | ||
83d5cc01 JB |
2255 | int sta_info_move_state(struct sta_info *sta, |
2256 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 2257 | { |
8bf11d8d | 2258 | might_sleep(); |
d9a7ddb0 JB |
2259 | |
2260 | if (sta->sta_state == new_state) | |
2261 | return 0; | |
2262 | ||
f09603a2 JB |
2263 | /* check allowed transitions first */ |
2264 | ||
2265 | switch (new_state) { | |
2266 | case IEEE80211_STA_NONE: | |
2267 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
2268 | return -EINVAL; | |
2269 | break; | |
2270 | case IEEE80211_STA_AUTH: | |
2271 | if (sta->sta_state != IEEE80211_STA_NONE && | |
2272 | sta->sta_state != IEEE80211_STA_ASSOC) | |
2273 | return -EINVAL; | |
2274 | break; | |
2275 | case IEEE80211_STA_ASSOC: | |
2276 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
2277 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
2278 | return -EINVAL; | |
2279 | break; | |
2280 | case IEEE80211_STA_AUTHORIZED: | |
2281 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
2282 | return -EINVAL; | |
2283 | break; | |
2284 | default: | |
2285 | WARN(1, "invalid state %d", new_state); | |
2286 | return -EINVAL; | |
2287 | } | |
2288 | ||
bdcbd8e0 JB |
2289 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
2290 | sta->sta.addr, new_state); | |
f09603a2 JB |
2291 | |
2292 | /* | |
2293 | * notify the driver before the actual changes so it can | |
2294 | * fail the transition | |
2295 | */ | |
2296 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
2297 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
2298 | sta->sta_state, new_state); | |
2299 | if (err) | |
2300 | return err; | |
2301 | } | |
2302 | ||
2303 | /* reflect the change in all state variables */ | |
2304 | ||
d9a7ddb0 JB |
2305 | switch (new_state) { |
2306 | case IEEE80211_STA_NONE: | |
2307 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
2308 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
2309 | break; |
2310 | case IEEE80211_STA_AUTH: | |
a7201a6c | 2311 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 2312 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 2313 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 2314 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
0cbf348a | 2315 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2316 | if (!sta->sta.support_p2p_ps) |
2317 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 2318 | } |
d9a7ddb0 JB |
2319 | break; |
2320 | case IEEE80211_STA_ASSOC: | |
29623892 | 2321 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 2322 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
9cf02338 | 2323 | sta->assoc_at = ktime_get_boottime_ns(); |
0cbf348a | 2324 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2325 | if (!sta->sta.support_p2p_ps) |
2326 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 2327 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 2328 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 2329 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2330 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 2331 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 2332 | } |
d9a7ddb0 JB |
2333 | break; |
2334 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 2335 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 2336 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 2337 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2338 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 2339 | ieee80211_check_fast_rx(sta); |
f09603a2 | 2340 | } |
3e493173 JM |
2341 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
2342 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
2343 | cfg80211_send_layer2_update(sta->sdata->dev, | |
2344 | sta->sta.addr); | |
d9a7ddb0 JB |
2345 | break; |
2346 | default: | |
f09603a2 | 2347 | break; |
d9a7ddb0 JB |
2348 | } |
2349 | ||
d9a7ddb0 JB |
2350 | sta->sta_state = new_state; |
2351 | ||
2352 | return 0; | |
2353 | } | |
687da132 | 2354 | |
c9c5962b JB |
2355 | static struct ieee80211_sta_rx_stats * |
2356 | sta_get_last_rx_stats(struct sta_info *sta) | |
2357 | { | |
046d2e7c | 2358 | struct ieee80211_sta_rx_stats *stats = &sta->deflink.rx_stats; |
c9c5962b JB |
2359 | int cpu; |
2360 | ||
046d2e7c | 2361 | if (!sta->deflink.pcpu_rx_stats) |
c9c5962b JB |
2362 | return stats; |
2363 | ||
2364 | for_each_possible_cpu(cpu) { | |
2365 | struct ieee80211_sta_rx_stats *cpustats; | |
2366 | ||
046d2e7c | 2367 | cpustats = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
c9c5962b JB |
2368 | |
2369 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2370 | stats = cpustats; | |
2371 | } | |
2372 | ||
2373 | return stats; | |
2374 | } | |
2375 | ||
41cbb0f5 | 2376 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2377 | struct rate_info *rinfo) |
fbd6ff5c | 2378 | { |
dcba665b | 2379 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2380 | |
dcba665b | 2381 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2382 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2383 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2384 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2385 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2386 | if (STA_STATS_GET(SGI, rate)) | |
2387 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2388 | break; |
2389 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2390 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2391 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2392 | if (STA_STATS_GET(SGI, rate)) | |
2393 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2394 | break; |
2395 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2396 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2397 | u16 brate; |
4f6b1b3d | 2398 | unsigned int shift; |
dcba665b JB |
2399 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2400 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2401 | |
dcba665b | 2402 | sband = local->hw.wiphy->bands[band]; |
8b783d10 TP |
2403 | |
2404 | if (WARN_ON_ONCE(!sband->bitrates)) | |
2405 | break; | |
2406 | ||
dcba665b | 2407 | brate = sband->bitrates[rate_idx].bitrate; |
4f6b1b3d JB |
2408 | if (rinfo->bw == RATE_INFO_BW_5) |
2409 | shift = 2; | |
2410 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2411 | shift = 1; | |
2412 | else | |
2413 | shift = 0; | |
fbd6ff5c | 2414 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2415 | break; |
2416 | } | |
41cbb0f5 LC |
2417 | case STA_STATS_RATE_TYPE_HE: |
2418 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2419 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2420 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2421 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2422 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2423 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2424 | break; | |
f66c48af JB |
2425 | case STA_STATS_RATE_TYPE_EHT: |
2426 | rinfo->flags = RATE_INFO_FLAGS_EHT_MCS; | |
2427 | rinfo->mcs = STA_STATS_GET(EHT_MCS, rate); | |
2428 | rinfo->nss = STA_STATS_GET(EHT_NSS, rate); | |
2429 | rinfo->eht_gi = STA_STATS_GET(EHT_GI, rate); | |
2430 | rinfo->eht_ru_alloc = STA_STATS_GET(EHT_RU, rate); | |
2431 | break; | |
fbd6ff5c | 2432 | } |
4f6b1b3d JB |
2433 | } |
2434 | ||
a17d93ff | 2435 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2436 | { |
59336e07 | 2437 | u32 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2438 | |
4f6b1b3d | 2439 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2440 | return -EINVAL; |
2441 | ||
2442 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2443 | return 0; | |
fbd6ff5c JB |
2444 | } |
2445 | ||
b255b72b SM |
2446 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
2447 | int tid) | |
2448 | { | |
2449 | unsigned int start; | |
2450 | u64 value; | |
2451 | ||
2452 | do { | |
d120d1a6 | 2453 | start = u64_stats_fetch_begin(&rxstats->syncp); |
b255b72b | 2454 | value = rxstats->msdu[tid]; |
d120d1a6 | 2455 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
b255b72b SM |
2456 | |
2457 | return value; | |
2458 | } | |
2459 | ||
0f9c5a61 JB |
2460 | static void sta_set_tidstats(struct sta_info *sta, |
2461 | struct cfg80211_tid_stats *tidstats, | |
2462 | int tid) | |
2463 | { | |
2464 | struct ieee80211_local *local = sta->local; | |
b255b72b | 2465 | int cpu; |
0f9c5a61 JB |
2466 | |
2467 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
046d2e7c S |
2468 | tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->deflink.rx_stats, |
2469 | tid); | |
0f9c5a61 | 2470 | |
046d2e7c | 2471 | if (sta->deflink.pcpu_rx_stats) { |
b255b72b SM |
2472 | for_each_possible_cpu(cpu) { |
2473 | struct ieee80211_sta_rx_stats *cpurxs; | |
2474 | ||
046d2e7c S |
2475 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2476 | cpu); | |
b255b72b SM |
2477 | tidstats->rx_msdu += |
2478 | sta_get_tidstats_msdu(cpurxs, tid); | |
2479 | } | |
2480 | } | |
0f9c5a61 JB |
2481 | |
2482 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2483 | } | |
2484 | ||
2485 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2486 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
046d2e7c | 2487 | tidstats->tx_msdu = sta->deflink.tx_stats.msdu[tid]; |
0f9c5a61 JB |
2488 | } |
2489 | ||
2490 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2491 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2492 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
046d2e7c | 2493 | tidstats->tx_msdu_retries = sta->deflink.status_stats.msdu_retries[tid]; |
0f9c5a61 JB |
2494 | } |
2495 | ||
2496 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2497 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2498 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
046d2e7c | 2499 | tidstats->tx_msdu_failed = sta->deflink.status_stats.msdu_failed[tid]; |
0f9c5a61 | 2500 | } |
2fe4a29a | 2501 | |
107395f9 | 2502 | if (tid < IEEE80211_NUM_TIDS) { |
2fe4a29a THJ |
2503 | spin_lock_bh(&local->fq.lock); |
2504 | rcu_read_lock(); | |
2505 | ||
2506 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2507 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2508 | to_txq_info(sta->sta.txq[tid])); | |
2509 | ||
2510 | rcu_read_unlock(); | |
2511 | spin_unlock_bh(&local->fq.lock); | |
2512 | } | |
0f9c5a61 JB |
2513 | } |
2514 | ||
c9c5962b JB |
2515 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2516 | { | |
2517 | unsigned int start; | |
2518 | u64 value; | |
2519 | ||
2520 | do { | |
d120d1a6 | 2521 | start = u64_stats_fetch_begin(&rxstats->syncp); |
c9c5962b | 2522 | value = rxstats->bytes; |
d120d1a6 | 2523 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
c9c5962b JB |
2524 | |
2525 | return value; | |
2526 | } | |
2527 | ||
0fdf1493 JB |
2528 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2529 | bool tidstats) | |
b7ffbd7e JB |
2530 | { |
2531 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2532 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2533 | u32 thr = 0; |
c9c5962b JB |
2534 | int i, ac, cpu; |
2535 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2536 | ||
2537 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2538 | |
2539 | sinfo->generation = sdata->local->sta_generation; | |
2540 | ||
225b8189 JB |
2541 | /* do before driver, so beacon filtering drivers have a |
2542 | * chance to e.g. just add the number of filtered beacons | |
2543 | * (or just modify the value entirely, of course) | |
2544 | */ | |
2545 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
bfd8403a | 2546 | sinfo->rx_beacon = sdata->deflink.u.mgd.count_beacon_signal; |
225b8189 | 2547 | |
2b9a7e1b | 2548 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
a4217750 OE |
2549 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2550 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2551 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2552 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2553 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2554 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2555 | |
2556 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
bfd8403a JB |
2557 | sinfo->beacon_loss_count = |
2558 | sdata->deflink.u.mgd.beacon_loss_count; | |
a4217750 | 2559 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2560 | } |
b7ffbd7e | 2561 | |
84b00607 | 2562 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2563 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2564 | sinfo->inactive_time = |
b8da6b6a | 2565 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2566 | |
a4217750 OE |
2567 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2568 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2569 | sinfo->tx_bytes = 0; |
2570 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2571 | sinfo->tx_bytes += sta->deflink.tx_stats.bytes[ac]; |
a4217750 | 2572 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2573 | } |
2574 | ||
a4217750 | 2575 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2576 | sinfo->tx_packets = 0; |
2577 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2578 | sinfo->tx_packets += sta->deflink.tx_stats.packets[ac]; |
a4217750 | 2579 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2580 | } |
2581 | ||
a4217750 OE |
2582 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2583 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
046d2e7c | 2584 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->deflink.rx_stats); |
c9c5962b | 2585 | |
046d2e7c | 2586 | if (sta->deflink.pcpu_rx_stats) { |
c9c5962b JB |
2587 | for_each_possible_cpu(cpu) { |
2588 | struct ieee80211_sta_rx_stats *cpurxs; | |
2589 | ||
046d2e7c S |
2590 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2591 | cpu); | |
c9c5962b JB |
2592 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
2593 | } | |
2594 | } | |
0f9c5a61 | 2595 | |
a4217750 | 2596 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2597 | } |
2598 | ||
a4217750 | 2599 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
046d2e7c S |
2600 | sinfo->rx_packets = sta->deflink.rx_stats.packets; |
2601 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2602 | for_each_possible_cpu(cpu) { |
2603 | struct ieee80211_sta_rx_stats *cpurxs; | |
2604 | ||
046d2e7c S |
2605 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2606 | cpu); | |
c9c5962b JB |
2607 | sinfo->rx_packets += cpurxs->packets; |
2608 | } | |
2609 | } | |
a4217750 | 2610 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2611 | } |
2612 | ||
a4217750 | 2613 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
046d2e7c | 2614 | sinfo->tx_retries = sta->deflink.status_stats.retry_count; |
a4217750 | 2615 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2616 | } |
2617 | ||
a4217750 | 2618 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
046d2e7c | 2619 | sinfo->tx_failed = sta->deflink.status_stats.retry_failed; |
a4217750 | 2620 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2621 | } |
2b9a7e1b | 2622 | |
b4809e94 THJ |
2623 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2624 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2625 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2626 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2627 | } | |
2628 | ||
2629 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2630 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2631 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2632 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2633 | } | |
2634 | ||
2635 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
942741da | 2636 | sinfo->airtime_weight = sta->airtime_weight; |
b4809e94 THJ |
2637 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
2638 | } | |
2639 | ||
046d2e7c S |
2640 | sinfo->rx_dropped_misc = sta->deflink.rx_stats.dropped; |
2641 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2642 | for_each_possible_cpu(cpu) { |
2643 | struct ieee80211_sta_rx_stats *cpurxs; | |
2644 | ||
046d2e7c | 2645 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
e165bc02 | 2646 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2647 | } |
2648 | } | |
b7ffbd7e | 2649 | |
225b8189 JB |
2650 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2651 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2652 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2653 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2654 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2655 | } | |
2656 | ||
30686bf7 JB |
2657 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2658 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2659 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2660 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2661 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2662 | } |
2663 | ||
046d2e7c | 2664 | if (!sta->deflink.pcpu_rx_stats && |
a4217750 | 2665 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2666 | sinfo->signal_avg = |
046d2e7c | 2667 | -ewma_signal_read(&sta->deflink.rx_stats_avg.signal); |
a4217750 | 2668 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2669 | } |
b7ffbd7e | 2670 | } |
2b9a7e1b | 2671 | |
c9c5962b JB |
2672 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2673 | * the sta->rx_stats struct, so the check here is fine with and without | |
2674 | * pcpu statistics | |
2675 | */ | |
2676 | if (last_rxstats->chains && | |
a4217750 OE |
2677 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2678 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2679 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
046d2e7c | 2680 | if (!sta->deflink.pcpu_rx_stats) |
a4217750 | 2681 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2682 | |
2683 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2684 | |
b7ffbd7e | 2685 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2686 | sinfo->chain_signal[i] = |
c9c5962b | 2687 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2688 | sinfo->chain_signal_avg[i] = |
046d2e7c | 2689 | -ewma_signal_read(&sta->deflink.rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2690 | } |
2691 | } | |
2692 | ||
8a263dcb JB |
2693 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) && |
2694 | !sta->sta.valid_links) { | |
046d2e7c | 2695 | sta_set_rate_info_tx(sta, &sta->deflink.tx_stats.last_rate, |
e5a9f8d0 | 2696 | &sinfo->txrate); |
a4217750 | 2697 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2698 | } |
2699 | ||
8a263dcb JB |
2700 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) && |
2701 | !sta->sta.valid_links) { | |
a17d93ff | 2702 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2703 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2704 | } |
b7ffbd7e | 2705 | |
0fdf1493 | 2706 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2707 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2708 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2709 | } |
2710 | ||
b7ffbd7e JB |
2711 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2712 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2713 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2714 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2715 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2716 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2717 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a | 2718 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
1303a51c MT |
2719 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
2720 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); | |
b7ffbd7e | 2721 | |
433f5bc1 JB |
2722 | sinfo->llid = sta->mesh->llid; |
2723 | sinfo->plid = sta->mesh->plid; | |
2724 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2725 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2726 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2727 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2728 | } |
433f5bc1 JB |
2729 | sinfo->local_pm = sta->mesh->local_pm; |
2730 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2731 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2732 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
1303a51c | 2733 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
b7ffbd7e JB |
2734 | #endif |
2735 | } | |
2736 | ||
2737 | sinfo->bss_param.flags = 0; | |
2738 | if (sdata->vif.bss_conf.use_cts_prot) | |
2739 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2740 | if (sdata->vif.bss_conf.use_short_preamble) | |
2741 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2742 | if (sdata->vif.bss_conf.use_short_slot) | |
2743 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2744 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2745 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2746 | ||
2747 | sinfo->sta_flags.set = 0; | |
2748 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2749 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2750 | BIT(NL80211_STA_FLAG_WME) | | |
2751 | BIT(NL80211_STA_FLAG_MFP) | | |
2752 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2753 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2754 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2755 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2756 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2757 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2758 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2759 | if (sta->sta.wme) |
b7ffbd7e JB |
2760 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2761 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2762 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2763 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2764 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2765 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2766 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2767 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2768 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2769 | ||
3b17fbf8 MA |
2770 | thr = sta_get_expected_throughput(sta); |
2771 | ||
2772 | if (thr != 0) { | |
a4217750 | 2773 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2774 | sinfo->expected_throughput = thr; |
2775 | } | |
a78b26ff VN |
2776 | |
2777 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
046d2e7c S |
2778 | sta->deflink.status_stats.ack_signal_filled) { |
2779 | sinfo->ack_signal = sta->deflink.status_stats.last_ack_signal; | |
a78b26ff VN |
2780 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
2781 | } | |
cc60dbbf | 2782 | |
9c06602b | 2783 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
046d2e7c | 2784 | sta->deflink.status_stats.ack_signal_filled) { |
cc60dbbf BP |
2785 | sinfo->avg_ack_signal = |
2786 | -(s8)ewma_avg_signal_read( | |
046d2e7c | 2787 | &sta->deflink.status_stats.avg_ack_signal); |
cc60dbbf | 2788 | sinfo->filled |= |
9c06602b | 2789 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2790 | } |
ab60633c NM |
2791 | |
2792 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2793 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2794 | sinfo->airtime_link_metric = | |
2795 | airtime_link_metric_get(local, sta); | |
2796 | } | |
3b17fbf8 MA |
2797 | } |
2798 | ||
2799 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2800 | { | |
2801 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2802 | struct ieee80211_local *local = sdata->local; | |
2803 | struct rate_control_ref *ref = NULL; | |
2804 | u32 thr = 0; | |
2805 | ||
2806 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2807 | ref = local->rate_ctrl; | |
2808 | ||
b7ffbd7e JB |
2809 | /* check if the driver has a SW RC implementation */ |
2810 | if (ref && ref->ops->get_expected_throughput) | |
2811 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2812 | else | |
4fdbc67a | 2813 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2814 | |
3b17fbf8 | 2815 | return thr; |
b7ffbd7e | 2816 | } |
b8da6b6a JB |
2817 | |
2818 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2819 | { | |
c9c5962b JB |
2820 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2821 | ||
046d2e7c S |
2822 | if (!sta->deflink.status_stats.last_ack || |
2823 | time_after(stats->last_rx, sta->deflink.status_stats.last_ack)) | |
c9c5962b | 2824 | return stats->last_rx; |
046d2e7c | 2825 | return sta->deflink.status_stats.last_ack; |
b8da6b6a | 2826 | } |
484a54c2 THJ |
2827 | |
2828 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2829 | { | |
484a54c2 THJ |
2830 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { |
2831 | sta->cparams.target = MS2TIME(50); | |
2832 | sta->cparams.interval = MS2TIME(300); | |
2833 | sta->cparams.ecn = false; | |
2834 | } else { | |
2835 | sta->cparams.target = MS2TIME(20); | |
2836 | sta->cparams.interval = MS2TIME(100); | |
2837 | sta->cparams.ecn = true; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2842 | u32 thr) | |
2843 | { | |
2844 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2845 | ||
2846 | sta_update_codel_params(sta, thr); | |
2847 | } | |
cb71f1d1 JB |
2848 | |
2849 | int ieee80211_sta_allocate_link(struct sta_info *sta, unsigned int link_id) | |
2850 | { | |
2851 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2852 | struct sta_link_alloc *alloc; | |
2853 | int ret; | |
2854 | ||
2855 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2856 | ||
2857 | /* must represent an MLD from the start */ | |
2858 | if (WARN_ON(!sta->sta.valid_links)) | |
2859 | return -EINVAL; | |
2860 | ||
2861 | if (WARN_ON(sta->sta.valid_links & BIT(link_id) || | |
2862 | sta->link[link_id])) | |
2863 | return -EBUSY; | |
2864 | ||
2865 | alloc = kzalloc(sizeof(*alloc), GFP_KERNEL); | |
2866 | if (!alloc) | |
2867 | return -ENOMEM; | |
2868 | ||
2869 | ret = sta_info_alloc_link(sdata->local, &alloc->info, GFP_KERNEL); | |
2870 | if (ret) { | |
2871 | kfree(alloc); | |
2872 | return ret; | |
2873 | } | |
2874 | ||
2875 | sta_info_add_link(sta, link_id, &alloc->info, &alloc->sta); | |
2876 | ||
d2caad52 BB |
2877 | ieee80211_link_sta_debugfs_add(&alloc->info); |
2878 | ||
cb71f1d1 JB |
2879 | return 0; |
2880 | } | |
2881 | ||
21476ad1 ST |
2882 | void ieee80211_sta_free_link(struct sta_info *sta, unsigned int link_id) |
2883 | { | |
2884 | lockdep_assert_held(&sta->sdata->local->sta_mtx); | |
2885 | ||
2886 | sta_remove_link(sta, link_id, false); | |
2887 | } | |
2888 | ||
cb71f1d1 JB |
2889 | int ieee80211_sta_activate_link(struct sta_info *sta, unsigned int link_id) |
2890 | { | |
2891 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
c71420db | 2892 | struct link_sta_info *link_sta; |
cb71f1d1 JB |
2893 | u16 old_links = sta->sta.valid_links; |
2894 | u16 new_links = old_links | BIT(link_id); | |
2895 | int ret; | |
2896 | ||
c71420db JB |
2897 | link_sta = rcu_dereference_protected(sta->link[link_id], |
2898 | lockdep_is_held(&sdata->local->sta_mtx)); | |
cb71f1d1 | 2899 | |
c71420db | 2900 | if (WARN_ON(old_links == new_links || !link_sta)) |
cb71f1d1 JB |
2901 | return -EINVAL; |
2902 | ||
177577db JB |
2903 | rcu_read_lock(); |
2904 | if (link_sta_info_hash_lookup(sdata->local, link_sta->addr)) { | |
2905 | rcu_read_unlock(); | |
2906 | return -EALREADY; | |
2907 | } | |
2908 | /* we only modify under the mutex so this is fine */ | |
2909 | rcu_read_unlock(); | |
2910 | ||
cb71f1d1 JB |
2911 | sta->sta.valid_links = new_links; |
2912 | ||
80e2b1fa | 2913 | if (!test_sta_flag(sta, WLAN_STA_INSERTED)) |
ba6ddab9 | 2914 | goto hash; |
cb71f1d1 | 2915 | |
4c51541d BB |
2916 | /* Ensure the values are updated for the driver, |
2917 | * redone by sta_remove_link on failure. | |
2918 | */ | |
2919 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
2920 | ||
cb71f1d1 JB |
2921 | ret = drv_change_sta_links(sdata->local, sdata, &sta->sta, |
2922 | old_links, new_links); | |
2923 | if (ret) { | |
2924 | sta->sta.valid_links = old_links; | |
ba6ddab9 | 2925 | sta_remove_link(sta, link_id, false); |
177577db | 2926 | return ret; |
cb71f1d1 JB |
2927 | } |
2928 | ||
ba6ddab9 | 2929 | hash: |
177577db JB |
2930 | ret = link_sta_info_hash_add(sdata->local, link_sta); |
2931 | WARN_ON(ret); | |
2932 | return 0; | |
cb71f1d1 JB |
2933 | } |
2934 | ||
2935 | void ieee80211_sta_remove_link(struct sta_info *sta, unsigned int link_id) | |
2936 | { | |
2937 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
a8f62399 | 2938 | u16 old_links = sta->sta.valid_links; |
cb71f1d1 JB |
2939 | |
2940 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2941 | ||
2942 | sta->sta.valid_links &= ~BIT(link_id); | |
2943 | ||
2944 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) | |
2945 | drv_change_sta_links(sdata->local, sdata, &sta->sta, | |
a8f62399 | 2946 | old_links, sta->sta.valid_links); |
cb71f1d1 | 2947 | |
ba6ddab9 | 2948 | sta_remove_link(sta, link_id, true); |
cb71f1d1 | 2949 | } |
175ad2ec JB |
2950 | |
2951 | void ieee80211_sta_set_max_amsdu_subframes(struct sta_info *sta, | |
2952 | const u8 *ext_capab, | |
2953 | unsigned int ext_capab_len) | |
2954 | { | |
2955 | u8 val; | |
2956 | ||
2957 | sta->sta.max_amsdu_subframes = 0; | |
2958 | ||
2959 | if (ext_capab_len < 8) | |
2960 | return; | |
2961 | ||
2962 | /* The sender might not have sent the last bit, consider it to be 0 */ | |
2963 | val = u8_get_bits(ext_capab[7], WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB); | |
2964 | ||
2965 | /* we did get all the bits, take the MSB as well */ | |
2966 | if (ext_capab_len >= 9) | |
2967 | val |= u8_get_bits(ext_capab[8], | |
2968 | WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB) << 1; | |
2969 | ||
2970 | if (val) | |
2971 | sta->sta.max_amsdu_subframes = 4 << val; | |
2972 | } | |
65fd846c JB |
2973 | |
2974 | #ifdef CONFIG_LOCKDEP | |
2975 | bool lockdep_sta_mutex_held(struct ieee80211_sta *pubsta) | |
2976 | { | |
2977 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2978 | ||
2979 | return lockdep_is_held(&sta->local->sta_mtx); | |
2980 | } | |
2981 | EXPORT_SYMBOL(lockdep_sta_mutex_held); | |
2982 | #endif |