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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 |
10a7ba92 | 7 | * Copyright (C) 2018-2023 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 | |
cc6bbfe8 | 43 | * the caller may not do much with the STA info before inserting it; in |
34e89507 JB |
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 | * |
cc6bbfe8 | 61 | * There is no concept of ownership on a STA entry; each structure is |
34e89507 JB |
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 | ||
be8755e1 MW |
91 | static int sta_info_hash_del(struct ieee80211_local *local, |
92 | struct sta_info *sta) | |
f0706e82 | 93 | { |
83e7e4ce HX |
94 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
95 | sta_rht_params); | |
f0706e82 JB |
96 | } |
97 | ||
f36fe0a2 JB |
98 | static int link_sta_info_hash_add(struct ieee80211_local *local, |
99 | struct link_sta_info *link_sta) | |
100 | { | |
4d3acf43 JB |
101 | lockdep_assert_wiphy(local->hw.wiphy); |
102 | ||
f36fe0a2 | 103 | return rhltable_insert(&local->link_sta_hash, |
4d3acf43 | 104 | &link_sta->link_hash_node, link_sta_rht_params); |
f36fe0a2 JB |
105 | } |
106 | ||
ba6ddab9 JB |
107 | static int link_sta_info_hash_del(struct ieee80211_local *local, |
108 | struct link_sta_info *link_sta) | |
109 | { | |
4d3acf43 JB |
110 | lockdep_assert_wiphy(local->hw.wiphy); |
111 | ||
ba6ddab9 | 112 | return rhltable_remove(&local->link_sta_hash, |
4d3acf43 | 113 | &link_sta->link_hash_node, link_sta_rht_params); |
ba6ddab9 JB |
114 | } |
115 | ||
3831f6d8 MK |
116 | void ieee80211_purge_sta_txqs(struct sta_info *sta) |
117 | { | |
118 | struct ieee80211_local *local = sta->sdata->local; | |
119 | int i; | |
120 | ||
121 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
122 | struct txq_info *txqi; | |
123 | ||
124 | if (!sta->sta.txq[i]) | |
125 | continue; | |
126 | ||
127 | txqi = to_txq_info(sta->sta.txq[i]); | |
128 | ||
129 | ieee80211_txq_purge(local, txqi); | |
130 | } | |
131 | } | |
132 | ||
5108ca82 | 133 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 134 | { |
b22cfcfc EP |
135 | int ac, i; |
136 | struct tid_ampdu_tx *tid_tx; | |
137 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
138 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 139 | struct ps_data *ps; |
b22cfcfc | 140 | |
e3685e03 | 141 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
142 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
143 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
144 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
145 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
146 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
147 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
148 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
149 | else |
150 | return; | |
b22cfcfc EP |
151 | |
152 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 153 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 154 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 155 | |
d012a605 | 156 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
157 | } |
158 | ||
3831f6d8 | 159 | ieee80211_purge_sta_txqs(sta); |
ba8c3d6f | 160 | |
b22cfcfc EP |
161 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
162 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
163 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
164 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
165 | } |
166 | ||
45b5028e TP |
167 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
168 | mesh_sta_cleanup(sta); | |
b22cfcfc | 169 | |
5ac2e350 | 170 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
171 | |
172 | /* | |
173 | * Destroy aggregation state here. It would be nice to wait for the | |
174 | * driver to finish aggregation stop and then clean up, but for now | |
175 | * drivers have to handle aggregation stop being requested, followed | |
176 | * directly by station destruction. | |
177 | */ | |
5a306f58 | 178 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 179 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
180 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
181 | if (!tid_tx) | |
182 | continue; | |
1f98ab7f | 183 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
184 | kfree(tid_tx); |
185 | } | |
5108ca82 | 186 | } |
b22cfcfc | 187 | |
5108ca82 JB |
188 | static void cleanup_single_sta(struct sta_info *sta) |
189 | { | |
190 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
191 | struct ieee80211_local *local = sdata->local; | |
192 | ||
193 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
194 | sta_info_free(local, sta); |
195 | } | |
196 | ||
83e7e4ce HX |
197 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
198 | const u8 *addr) | |
199 | { | |
200 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
201 | } | |
202 | ||
d0709a65 | 203 | /* protected by RCU */ |
abe60632 JB |
204 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
205 | const u8 *addr) | |
f0706e82 | 206 | { |
abe60632 | 207 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 208 | struct rhlist_head *tmp; |
60f4b626 | 209 | struct sta_info *sta; |
f0706e82 | 210 | |
60f4b626 | 211 | rcu_read_lock(); |
83e7e4ce | 212 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
213 | if (sta->sdata == sdata) { |
214 | rcu_read_unlock(); | |
215 | /* this is safe as the caller must already hold | |
216 | * another rcu read section or the mutex | |
217 | */ | |
218 | return sta; | |
219 | } | |
220 | } | |
221 | rcu_read_unlock(); | |
222 | return NULL; | |
43ba7e95 JB |
223 | } |
224 | ||
0e5ded5a FF |
225 | /* |
226 | * Get sta info either from the specified interface | |
227 | * or from one of its vlans | |
228 | */ | |
229 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
230 | const u8 *addr) | |
231 | { | |
232 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 233 | struct rhlist_head *tmp; |
0e5ded5a FF |
234 | struct sta_info *sta; |
235 | ||
7bedd0cf | 236 | rcu_read_lock(); |
83e7e4ce | 237 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
238 | if (sta->sdata == sdata || |
239 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
240 | rcu_read_unlock(); | |
241 | /* this is safe as the caller must already hold | |
242 | * another rcu read section or the mutex | |
243 | */ | |
244 | return sta; | |
245 | } | |
0e5ded5a | 246 | } |
7bedd0cf JB |
247 | rcu_read_unlock(); |
248 | return NULL; | |
0e5ded5a FF |
249 | } |
250 | ||
ba6ddab9 JB |
251 | struct rhlist_head *link_sta_info_hash_lookup(struct ieee80211_local *local, |
252 | const u8 *addr) | |
253 | { | |
254 | return rhltable_lookup(&local->link_sta_hash, addr, | |
255 | link_sta_rht_params); | |
256 | } | |
257 | ||
258 | struct link_sta_info * | |
259 | link_sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr) | |
260 | { | |
261 | struct ieee80211_local *local = sdata->local; | |
262 | struct rhlist_head *tmp; | |
263 | struct link_sta_info *link_sta; | |
264 | ||
265 | rcu_read_lock(); | |
266 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
267 | struct sta_info *sta = link_sta->sta; | |
268 | ||
269 | if (sta->sdata == sdata || | |
270 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
271 | rcu_read_unlock(); | |
272 | /* this is safe as the caller must already hold | |
273 | * another rcu read section or the mutex | |
274 | */ | |
275 | return link_sta; | |
276 | } | |
277 | } | |
278 | rcu_read_unlock(); | |
279 | return NULL; | |
280 | } | |
281 | ||
ffa9598e JB |
282 | struct ieee80211_sta * |
283 | ieee80211_find_sta_by_link_addrs(struct ieee80211_hw *hw, | |
284 | const u8 *addr, | |
285 | const u8 *localaddr, | |
286 | unsigned int *link_id) | |
287 | { | |
288 | struct ieee80211_local *local = hw_to_local(hw); | |
289 | struct link_sta_info *link_sta; | |
290 | struct rhlist_head *tmp; | |
291 | ||
292 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
293 | struct sta_info *sta = link_sta->sta; | |
294 | struct ieee80211_link_data *link; | |
295 | u8 _link_id = link_sta->link_id; | |
296 | ||
297 | if (!localaddr) { | |
298 | if (link_id) | |
299 | *link_id = _link_id; | |
300 | return &sta->sta; | |
301 | } | |
302 | ||
303 | link = rcu_dereference(sta->sdata->link[_link_id]); | |
304 | if (!link) | |
305 | continue; | |
306 | ||
307 | if (memcmp(link->conf->addr, localaddr, ETH_ALEN)) | |
308 | continue; | |
309 | ||
310 | if (link_id) | |
311 | *link_id = _link_id; | |
312 | return &sta->sta; | |
313 | } | |
314 | ||
315 | return NULL; | |
316 | } | |
317 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_link_addrs); | |
318 | ||
5072f73c THJ |
319 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
320 | const u8 *sta_addr, const u8 *vif_addr) | |
321 | { | |
322 | struct rhlist_head *tmp; | |
323 | struct sta_info *sta; | |
324 | ||
325 | for_each_sta_info(local, sta_addr, sta, tmp) { | |
326 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) | |
327 | return sta; | |
328 | } | |
329 | ||
330 | return NULL; | |
331 | } | |
332 | ||
3b53fde8 JB |
333 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
334 | int idx) | |
ee385855 | 335 | { |
3b53fde8 | 336 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
337 | struct sta_info *sta; |
338 | int i = 0; | |
339 | ||
8ca47eb9 | 340 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
4d3acf43 | 341 | lockdep_is_held(&local->hw.wiphy->mtx)) { |
3b53fde8 | 342 | if (sdata != sta->sdata) |
2a8ca29a | 343 | continue; |
ee385855 LCC |
344 | if (i < idx) { |
345 | ++i; | |
346 | continue; | |
ee385855 | 347 | } |
2a8ca29a | 348 | return sta; |
ee385855 | 349 | } |
ee385855 LCC |
350 | |
351 | return NULL; | |
352 | } | |
f0706e82 | 353 | |
cb71f1d1 | 354 | static void sta_info_free_link(struct link_sta_info *link_sta) |
246b39e4 | 355 | { |
cb71f1d1 JB |
356 | free_percpu(link_sta->pcpu_rx_stats); |
357 | } | |
246b39e4 | 358 | |
ba6ddab9 JB |
359 | static void sta_remove_link(struct sta_info *sta, unsigned int link_id, |
360 | bool unhash) | |
cb71f1d1 JB |
361 | { |
362 | struct sta_link_alloc *alloc = NULL; | |
c71420db | 363 | struct link_sta_info *link_sta; |
246b39e4 | 364 | |
4d3acf43 | 365 | lockdep_assert_wiphy(sta->local->hw.wiphy); |
c71420db | 366 | |
4d3acf43 | 367 | link_sta = rcu_access_pointer(sta->link[link_id]); |
c71420db | 368 | if (WARN_ON(!link_sta)) |
cb71f1d1 JB |
369 | return; |
370 | ||
ba6ddab9 JB |
371 | if (unhash) |
372 | link_sta_info_hash_del(sta->local, link_sta); | |
373 | ||
d2caad52 BB |
374 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) |
375 | ieee80211_link_sta_debugfs_remove(link_sta); | |
376 | ||
c71420db JB |
377 | if (link_sta != &sta->deflink) |
378 | alloc = container_of(link_sta, typeof(*alloc), info); | |
cb71f1d1 JB |
379 | |
380 | sta->sta.valid_links &= ~BIT(link_id); | |
c71420db JB |
381 | RCU_INIT_POINTER(sta->link[link_id], NULL); |
382 | RCU_INIT_POINTER(sta->sta.link[link_id], NULL); | |
cb71f1d1 JB |
383 | if (alloc) { |
384 | sta_info_free_link(&alloc->info); | |
c71420db | 385 | kfree_rcu(alloc, rcu_head); |
246b39e4 | 386 | } |
4c51541d BB |
387 | |
388 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
246b39e4 JB |
389 | } |
390 | ||
93e5deb1 | 391 | /** |
d9a7ddb0 | 392 | * sta_info_free - free STA |
93e5deb1 | 393 | * |
6ef307bc | 394 | * @local: pointer to the global information |
93e5deb1 JB |
395 | * @sta: STA info to free |
396 | * | |
397 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
398 | * that may happen before sta_info_insert(). It may only be |
399 | * called when sta_info_insert() has not been attempted (and | |
400 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 401 | */ |
d9a7ddb0 | 402 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 403 | { |
cb71f1d1 JB |
404 | int i; |
405 | ||
406 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
b01a74b3 JB |
407 | struct link_sta_info *link_sta; |
408 | ||
409 | link_sta = rcu_access_pointer(sta->link[i]); | |
410 | if (!link_sta) | |
cb71f1d1 JB |
411 | continue; |
412 | ||
0ad49045 | 413 | sta_remove_link(sta, i, false); |
cb71f1d1 JB |
414 | } |
415 | ||
dcd479e1 JB |
416 | /* |
417 | * If we had used sta_info_pre_move_state() then we might not | |
418 | * have gone through the state transitions down again, so do | |
419 | * it here now (and warn if it's inserted). | |
420 | * | |
421 | * This will clear state such as fast TX/RX that may have been | |
422 | * allocated during state transitions. | |
423 | */ | |
424 | while (sta->sta_state > IEEE80211_STA_NONE) { | |
425 | int ret; | |
426 | ||
427 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
428 | ||
429 | ret = sta_info_move_state(sta, sta->sta_state - 1); | |
430 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) | |
431 | break; | |
432 | } | |
433 | ||
889cbb91 | 434 | if (sta->rate_ctrl) |
af65cd96 | 435 | rate_control_free_sta(sta); |
93e5deb1 | 436 | |
bdcbd8e0 | 437 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 438 | |
107395f9 | 439 | kfree(to_txq_info(sta->sta.txq[0])); |
53d04525 | 440 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
441 | #ifdef CONFIG_MAC80211_MESH |
442 | kfree(sta->mesh); | |
443 | #endif | |
246b39e4 | 444 | |
cb71f1d1 | 445 | sta_info_free_link(&sta->deflink); |
93e5deb1 JB |
446 | kfree(sta); |
447 | } | |
448 | ||
62b14b24 JB |
449 | static int sta_info_hash_add(struct ieee80211_local *local, |
450 | struct sta_info *sta) | |
f0706e82 | 451 | { |
83e7e4ce HX |
452 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
453 | sta_rht_params); | |
f0706e82 | 454 | } |
f0706e82 | 455 | |
5ac2e350 | 456 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
457 | { |
458 | struct sta_info *sta; | |
459 | ||
5ac2e350 | 460 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
461 | |
462 | if (sta->dead) | |
463 | return; | |
464 | ||
5ac2e350 JB |
465 | local_bh_disable(); |
466 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 467 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 468 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 469 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 470 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 471 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 472 | local_bh_enable(); |
af818581 JB |
473 | } |
474 | ||
af65cd96 JB |
475 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
476 | struct sta_info *sta, gfp_t gfp) | |
477 | { | |
30686bf7 | 478 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
479 | return 0; |
480 | ||
889cbb91 | 481 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 482 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 483 | sta, gfp); |
889cbb91 | 484 | if (!sta->rate_ctrl_priv) |
af65cd96 | 485 | return -ENOMEM; |
af65cd96 JB |
486 | |
487 | return 0; | |
488 | } | |
489 | ||
cb71f1d1 JB |
490 | static int sta_info_alloc_link(struct ieee80211_local *local, |
491 | struct link_sta_info *link_info, | |
492 | gfp_t gfp) | |
246b39e4 | 493 | { |
246b39e4 JB |
494 | struct ieee80211_hw *hw = &local->hw; |
495 | int i; | |
496 | ||
246b39e4 JB |
497 | if (ieee80211_hw_check(hw, USES_RSS)) { |
498 | link_info->pcpu_rx_stats = | |
499 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); | |
500 | if (!link_info->pcpu_rx_stats) | |
501 | return -ENOMEM; | |
502 | } | |
503 | ||
246b39e4 JB |
504 | link_info->rx_stats.last_rx = jiffies; |
505 | u64_stats_init(&link_info->rx_stats.syncp); | |
506 | ||
507 | ewma_signal_init(&link_info->rx_stats_avg.signal); | |
508 | ewma_avg_signal_init(&link_info->status_stats.avg_ack_signal); | |
509 | for (i = 0; i < ARRAY_SIZE(link_info->rx_stats_avg.chain_signal); i++) | |
510 | ewma_signal_init(&link_info->rx_stats_avg.chain_signal[i]); | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
cb71f1d1 JB |
515 | static void sta_info_add_link(struct sta_info *sta, |
516 | unsigned int link_id, | |
517 | struct link_sta_info *link_info, | |
518 | struct ieee80211_link_sta *link_sta) | |
519 | { | |
520 | link_info->sta = sta; | |
521 | link_info->link_id = link_id; | |
c71420db | 522 | link_info->pub = link_sta; |
1d9e4c91 | 523 | link_info->pub->sta = &sta->sta; |
c73993b8 | 524 | link_sta->link_id = link_id; |
c71420db JB |
525 | rcu_assign_pointer(sta->link[link_id], link_info); |
526 | rcu_assign_pointer(sta->sta.link[link_id], link_sta); | |
261ce887 BB |
527 | |
528 | link_sta->smps_mode = IEEE80211_SMPS_OFF; | |
4c51541d | 529 | link_sta->agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
cb71f1d1 JB |
530 | } |
531 | ||
f36fe0a2 JB |
532 | static struct sta_info * |
533 | __sta_info_alloc(struct ieee80211_sub_if_data *sdata, | |
534 | const u8 *addr, int link_id, const u8 *link_addr, | |
535 | gfp_t gfp) | |
f0706e82 | 536 | { |
d0709a65 | 537 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 538 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 539 | struct sta_info *sta; |
107395f9 AW |
540 | void *txq_data; |
541 | int size; | |
16c5f15c | 542 | int i; |
f0706e82 | 543 | |
ba8c3d6f | 544 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 545 | if (!sta) |
73651ee6 | 546 | return NULL; |
f0706e82 | 547 | |
246b39e4 JB |
548 | sta->local = local; |
549 | sta->sdata = sdata; | |
550 | ||
cb71f1d1 | 551 | if (sta_info_alloc_link(local, &sta->deflink, gfp)) |
36fe8e4e | 552 | goto free; |
c9c5962b | 553 | |
cb71f1d1 JB |
554 | if (link_id >= 0) { |
555 | sta_info_add_link(sta, link_id, &sta->deflink, | |
556 | &sta->sta.deflink); | |
557 | sta->sta.valid_links = BIT(link_id); | |
558 | } else { | |
559 | sta_info_add_link(sta, 0, &sta->deflink, &sta->sta.deflink); | |
560 | } | |
561 | ||
4c51541d BB |
562 | sta->sta.cur = &sta->sta.deflink.agg; |
563 | ||
07346f81 | 564 | spin_lock_init(&sta->lock); |
1d147bfa | 565 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 566 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
1b672118 | 567 | wiphy_work_init(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
87f59c70 | 568 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
569 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
570 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
571 | if (!sta->mesh) | |
572 | goto free; | |
4c02d62f | 573 | sta->mesh->plink_sta = sta; |
433f5bc1 | 574 | spin_lock_init(&sta->mesh->plink_lock); |
45d33746 | 575 | if (!sdata->u.mesh.user_mpm) |
4c02d62f KC |
576 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
577 | 0); | |
433f5bc1 JB |
578 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
579 | } | |
87f59c70 | 580 | #endif |
07346f81 | 581 | |
ac100ce5 | 582 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 583 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
f36fe0a2 JB |
584 | memcpy(sta->deflink.addr, link_addr, ETH_ALEN); |
585 | memcpy(sta->sta.deflink.addr, link_addr, ETH_ALEN); | |
480dd46b MA |
586 | sta->sta.max_rx_aggregation_subframes = |
587 | local->hw.max_rx_aggregation_subframes; | |
588 | ||
046d2e7c S |
589 | /* TODO link specific alloc and assignments for MLO Link STA */ |
590 | ||
96fc6efb AW |
591 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
592 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
593 | * references to is not NULL. To not use the initial Rx-only key | |
594 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
595 | * which always will refer to a NULL key. | |
596 | */ | |
597 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
598 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
599 | ||
0f9c5a61 | 600 | |
3a11ce08 JB |
601 | ieee80211_init_frag_cache(&sta->frags); |
602 | ||
71ec375c JB |
603 | sta->sta_state = IEEE80211_STA_NONE; |
604 | ||
6e4c0d04 FF |
605 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
606 | sta->amsdu_mesh_control = -1; | |
607 | ||
b6da911b LK |
608 | /* Mark TID as unreserved */ |
609 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
610 | ||
84b00607 | 611 | sta->last_connected = ktime_get_seconds(); |
541a45a1 | 612 | |
107395f9 AW |
613 | size = sizeof(struct txq_info) + |
614 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
ba8c3d6f | 615 | |
107395f9 AW |
616 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); |
617 | if (!txq_data) | |
618 | goto free; | |
ba8c3d6f | 619 | |
107395f9 AW |
620 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
621 | struct txq_info *txq = txq_data + i * size; | |
ba8c3d6f | 622 | |
107395f9 AW |
623 | /* might not do anything for the (bufferable) MMPDU TXQ */ |
624 | ieee80211_txq_init(sdata, sta, txq, i); | |
abfbc3af | 625 | } |
f0706e82 | 626 | |
ba8c3d6f FF |
627 | if (sta_prepare_rate_control(local, sta, gfp)) |
628 | goto free_txq; | |
629 | ||
942741da | 630 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
b4809e94 | 631 | |
948d887d JB |
632 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
633 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
634 | skb_queue_head_init(&sta->tx_filtered[i]); | |
942741da FF |
635 | sta->airtime[i].deficit = sta->airtime_weight; |
636 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); | |
637 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; | |
638 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; | |
948d887d | 639 | } |
73651ee6 | 640 | |
5a306f58 | 641 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 642 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 643 | |
bd718fc1 JB |
644 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
645 | u32 mandatory = 0; | |
646 | int r; | |
647 | ||
648 | if (!hw->wiphy->bands[i]) | |
649 | continue; | |
650 | ||
651 | switch (i) { | |
652 | case NL80211_BAND_2GHZ: | |
63fa0426 | 653 | case NL80211_BAND_LC: |
bd718fc1 JB |
654 | /* |
655 | * We use both here, even if we cannot really know for | |
656 | * sure the station will support both, but the only use | |
657 | * for this is when we don't know anything yet and send | |
658 | * management frames, and then we'll pick the lowest | |
659 | * possible rate anyway. | |
660 | * If we don't include _G here, we cannot find a rate | |
661 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
662 | */ | |
663 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
664 | IEEE80211_RATE_MANDATORY_G; | |
665 | break; | |
666 | case NL80211_BAND_5GHZ: | |
667 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
668 | break; | |
669 | case NL80211_BAND_60GHZ: | |
670 | WARN_ON(1); | |
671 | mandatory = 0; | |
672 | break; | |
673 | } | |
674 | ||
675 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
676 | struct ieee80211_rate *rate; | |
677 | ||
678 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
679 | ||
680 | if (!(rate->flags & mandatory)) | |
681 | continue; | |
046d2e7c | 682 | sta->sta.deflink.supp_rates[i] |= BIT(r); |
bd718fc1 JB |
683 | } |
684 | } | |
685 | ||
484a54c2 THJ |
686 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
687 | sta->cparams.target = MS2TIME(20); | |
688 | sta->cparams.interval = MS2TIME(100); | |
689 | sta->cparams.ecn = true; | |
dfcb63ce THJ |
690 | sta->cparams.ce_threshold_selector = 0; |
691 | sta->cparams.ce_threshold_mask = 0; | |
484a54c2 | 692 | |
bdcbd8e0 | 693 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 694 | |
abfbc3af | 695 | return sta; |
ba8c3d6f FF |
696 | |
697 | free_txq: | |
107395f9 | 698 | kfree(to_txq_info(sta->sta.txq[0])); |
ba8c3d6f | 699 | free: |
cb71f1d1 | 700 | sta_info_free_link(&sta->deflink); |
433f5bc1 JB |
701 | #ifdef CONFIG_MAC80211_MESH |
702 | kfree(sta->mesh); | |
703 | #endif | |
ba8c3d6f FF |
704 | kfree(sta); |
705 | return NULL; | |
73651ee6 JB |
706 | } |
707 | ||
f36fe0a2 JB |
708 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
709 | const u8 *addr, gfp_t gfp) | |
710 | { | |
711 | return __sta_info_alloc(sdata, addr, -1, addr, gfp); | |
712 | } | |
713 | ||
714 | struct sta_info *sta_info_alloc_with_link(struct ieee80211_sub_if_data *sdata, | |
715 | const u8 *mld_addr, | |
716 | unsigned int link_id, | |
717 | const u8 *link_addr, | |
718 | gfp_t gfp) | |
719 | { | |
720 | return __sta_info_alloc(sdata, mld_addr, link_id, link_addr, gfp); | |
721 | } | |
722 | ||
8c71df7a | 723 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 724 | { |
34e89507 | 725 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 726 | |
4d3acf43 JB |
727 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
728 | ||
03e4497e JB |
729 | /* |
730 | * Can't be a WARN_ON because it can be triggered through a race: | |
731 | * something inserts a STA (on one CPU) without holding the RTNL | |
732 | * and another CPU turns off the net device. | |
733 | */ | |
8c71df7a GE |
734 | if (unlikely(!ieee80211_sdata_running(sdata))) |
735 | return -ENETDOWN; | |
03e4497e | 736 | |
b203ca39 | 737 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
deebea0a | 738 | !is_valid_ether_addr(sta->sta.addr))) |
8c71df7a GE |
739 | return -EINVAL; |
740 | ||
83e7e4ce HX |
741 | /* The RCU read lock is required by rhashtable due to |
742 | * asynchronous resize/rehash. We also require the mutex | |
743 | * for correctness. | |
31104891 JB |
744 | */ |
745 | rcu_read_lock(); | |
31104891 JB |
746 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && |
747 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
748 | rcu_read_unlock(); | |
749 | return -ENOTUNIQ; | |
750 | } | |
751 | rcu_read_unlock(); | |
752 | ||
8c71df7a GE |
753 | return 0; |
754 | } | |
755 | ||
f09603a2 JB |
756 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
757 | struct ieee80211_sub_if_data *sdata, | |
758 | struct sta_info *sta) | |
759 | { | |
760 | enum ieee80211_sta_state state; | |
761 | int err = 0; | |
762 | ||
763 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
764 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
765 | if (err) | |
766 | break; | |
767 | } | |
768 | ||
769 | if (!err) { | |
a4ec45a4 JB |
770 | /* |
771 | * Drivers using legacy sta_add/sta_remove callbacks only | |
772 | * get uploaded set to true after sta_add is called. | |
773 | */ | |
774 | if (!local->ops->sta_add) | |
775 | sta->uploaded = true; | |
f09603a2 JB |
776 | return 0; |
777 | } | |
778 | ||
779 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
780 | sdata_info(sdata, |
781 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
782 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
783 | err = 0; |
784 | } | |
785 | ||
786 | /* unwind on error */ | |
787 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
788 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
789 | ||
790 | return err; | |
791 | } | |
792 | ||
d405fd8c GG |
793 | static void |
794 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
795 | { | |
796 | struct ieee80211_local *local = sdata->local; | |
797 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
798 | struct sta_info *sta; | |
799 | ||
800 | rcu_read_lock(); | |
801 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
802 | if (sdata != sta->sdata || | |
803 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
804 | continue; | |
805 | if (!sta->sta.support_p2p_ps) { | |
806 | allow_p2p_go_ps = false; | |
807 | break; | |
808 | } | |
809 | } | |
810 | rcu_read_unlock(); | |
811 | ||
812 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
813 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
d8675a63 JB |
814 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
815 | BSS_CHANGED_P2P_PS); | |
d405fd8c GG |
816 | } |
817 | } | |
818 | ||
4d33960b | 819 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
820 | { |
821 | struct ieee80211_local *local = sta->local; | |
822 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 823 | struct station_info *sinfo = NULL; |
8c71df7a GE |
824 | int err = 0; |
825 | ||
4d3acf43 | 826 | lockdep_assert_wiphy(local->hw.wiphy); |
34e89507 | 827 | |
7852e361 JB |
828 | /* check if STA exists already */ |
829 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
830 | err = -EEXIST; | |
8f9dcc29 | 831 | goto out_cleanup; |
4d33960b | 832 | } |
32bfd35d | 833 | |
0c2e3842 KV |
834 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
835 | if (!sinfo) { | |
836 | err = -ENOMEM; | |
8f9dcc29 | 837 | goto out_cleanup; |
0c2e3842 KV |
838 | } |
839 | ||
7852e361 JB |
840 | local->num_sta++; |
841 | local->sta_generation++; | |
842 | smp_mb(); | |
4d33960b | 843 | |
5108ca82 JB |
844 | /* simplify things and don't accept BA sessions yet */ |
845 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
846 | ||
7852e361 | 847 | /* make the station visible */ |
62b14b24 JB |
848 | err = sta_info_hash_add(local, sta); |
849 | if (err) | |
850 | goto out_drop_sta; | |
83d5cc01 | 851 | |
f36fe0a2 JB |
852 | if (sta->sta.valid_links) { |
853 | err = link_sta_info_hash_add(local, &sta->deflink); | |
854 | if (err) { | |
855 | sta_info_hash_del(local, sta); | |
856 | goto out_drop_sta; | |
857 | } | |
858 | } | |
859 | ||
2bad7748 | 860 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 861 | |
4dde3c36 MG |
862 | /* update channel context before notifying the driver about state |
863 | * change, this enables driver using the updated channel context right away. | |
864 | */ | |
865 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
0cbf348a | 866 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
4dde3c36 MG |
867 | if (!sta->sta.support_p2p_ps) |
868 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
869 | } | |
870 | ||
5108ca82 JB |
871 | /* notify driver */ |
872 | err = sta_info_insert_drv_state(local, sdata, sta); | |
873 | if (err) | |
874 | goto out_remove; | |
875 | ||
7852e361 | 876 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c | 877 | |
5108ca82 JB |
878 | /* accept BA sessions now */ |
879 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 880 | |
7852e361 JB |
881 | ieee80211_sta_debugfs_add(sta); |
882 | rate_control_add_sta_debugfs(sta); | |
d2caad52 BB |
883 | if (sta->sta.valid_links) { |
884 | int i; | |
885 | ||
886 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
887 | struct link_sta_info *link_sta; | |
888 | ||
889 | link_sta = rcu_dereference_protected(sta->link[i], | |
4d3acf43 | 890 | lockdep_is_held(&local->hw.wiphy->mtx)); |
d2caad52 BB |
891 | |
892 | if (!link_sta) | |
893 | continue; | |
894 | ||
895 | ieee80211_link_sta_debugfs_add(link_sta); | |
896 | if (sdata->vif.active_links & BIT(i)) | |
897 | ieee80211_link_sta_debugfs_drv_add(link_sta); | |
898 | } | |
899 | } else { | |
900 | ieee80211_link_sta_debugfs_add(&sta->deflink); | |
901 | ieee80211_link_sta_debugfs_drv_add(&sta->deflink); | |
902 | } | |
4d33960b | 903 | |
0ef049dc AB |
904 | sinfo->generation = local->sta_generation; |
905 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
906 | kfree(sinfo); | |
d0709a65 | 907 | |
bdcbd8e0 | 908 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 909 | |
34e89507 JB |
910 | /* move reference to rcu-protected */ |
911 | rcu_read_lock(); | |
e9f207f0 | 912 | |
73651ee6 JB |
913 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
914 | mesh_accept_plinks_update(sdata); | |
915 | ||
bcbc84af FF |
916 | ieee80211_check_fast_xmit(sta); |
917 | ||
8c71df7a | 918 | return 0; |
5108ca82 | 919 | out_remove: |
0ad49045 JB |
920 | if (sta->sta.valid_links) |
921 | link_sta_info_hash_del(local, &sta->deflink); | |
5108ca82 JB |
922 | sta_info_hash_del(local, sta); |
923 | list_del_rcu(&sta->list); | |
62b14b24 | 924 | out_drop_sta: |
5108ca82 JB |
925 | local->num_sta--; |
926 | synchronize_net(); | |
8f9dcc29 | 927 | out_cleanup: |
7bc40aed | 928 | cleanup_single_sta(sta); |
ea32f065 | 929 | kfree(sinfo); |
4d33960b JB |
930 | rcu_read_lock(); |
931 | return err; | |
8c71df7a GE |
932 | } |
933 | ||
934 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
935 | { | |
936 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 937 | int err; |
8c71df7a | 938 | |
4d33960b | 939 | might_sleep(); |
4d3acf43 | 940 | lockdep_assert_wiphy(local->hw.wiphy); |
31104891 | 941 | |
8c71df7a GE |
942 | err = sta_info_insert_check(sta); |
943 | if (err) { | |
7bc40aed | 944 | sta_info_free(local, sta); |
8c71df7a | 945 | rcu_read_lock(); |
7bc40aed | 946 | return err; |
8c71df7a GE |
947 | } |
948 | ||
7bc40aed | 949 | return sta_info_insert_finish(sta); |
f0706e82 JB |
950 | } |
951 | ||
34e89507 JB |
952 | int sta_info_insert(struct sta_info *sta) |
953 | { | |
954 | int err = sta_info_insert_rcu(sta); | |
955 | ||
956 | rcu_read_unlock(); | |
957 | ||
958 | return err; | |
959 | } | |
960 | ||
d012a605 | 961 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
962 | { |
963 | /* | |
964 | * This format has been mandated by the IEEE specifications, | |
965 | * so this line may not be changed to use the __set_bit() format. | |
966 | */ | |
d012a605 | 967 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
968 | } |
969 | ||
d012a605 | 970 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
971 | { |
972 | /* | |
973 | * This format has been mandated by the IEEE specifications, | |
974 | * so this line may not be changed to use the __clear_bit() format. | |
975 | */ | |
d012a605 | 976 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
977 | } |
978 | ||
3d5839b6 IP |
979 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
980 | { | |
981 | /* | |
982 | * This format has been mandated by the IEEE specifications, | |
983 | * so this line may not be changed to use the test_bit() format. | |
984 | */ | |
985 | return tim[id / 8] & (1 << (id % 8)); | |
986 | } | |
987 | ||
948d887d | 988 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 989 | { |
948d887d JB |
990 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
991 | switch (ac) { | |
992 | case IEEE80211_AC_VO: | |
993 | return BIT(6) | BIT(7); | |
994 | case IEEE80211_AC_VI: | |
995 | return BIT(4) | BIT(5); | |
996 | case IEEE80211_AC_BE: | |
997 | return BIT(0) | BIT(3); | |
998 | case IEEE80211_AC_BK: | |
999 | return BIT(1) | BIT(2); | |
1000 | default: | |
1001 | WARN_ON(1); | |
1002 | return 0; | |
d0709a65 | 1003 | } |
004c872e JB |
1004 | } |
1005 | ||
9b7a86f3 | 1006 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 1007 | { |
c868cb35 | 1008 | struct ieee80211_local *local = sta->local; |
d012a605 | 1009 | struct ps_data *ps; |
948d887d JB |
1010 | bool indicate_tim = false; |
1011 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
1012 | int ac; | |
a69bd8e6 | 1013 | u16 id = sta->sta.aid; |
d012a605 MP |
1014 | |
1015 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
1016 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
1017 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
1018 | return; | |
004c872e | 1019 | |
d012a605 | 1020 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
1021 | #ifdef CONFIG_MAC80211_MESH |
1022 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
1023 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 1024 | #endif |
d012a605 | 1025 | } else { |
c868cb35 | 1026 | return; |
d012a605 | 1027 | } |
3e122be0 | 1028 | |
c868cb35 | 1029 | /* No need to do anything if the driver does all */ |
d98937f4 | 1030 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 1031 | return; |
004c872e | 1032 | |
c868cb35 JB |
1033 | if (sta->dead) |
1034 | goto done; | |
3e122be0 | 1035 | |
948d887d JB |
1036 | /* |
1037 | * If all ACs are delivery-enabled then we should build | |
1038 | * the TIM bit for all ACs anyway; if only some are then | |
1039 | * we ignore those and build the TIM bit using only the | |
1040 | * non-enabled ones. | |
1041 | */ | |
1042 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
1043 | ignore_for_tim = 0; | |
1044 | ||
9b7a86f3 JB |
1045 | if (ignore_pending) |
1046 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
1047 | ||
948d887d JB |
1048 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1049 | unsigned long tids; | |
3e122be0 | 1050 | |
f438ceb8 | 1051 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1052 | continue; |
1053 | ||
1054 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
1055 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
1056 | if (indicate_tim) | |
1057 | break; | |
3e122be0 | 1058 | |
948d887d JB |
1059 | tids = ieee80211_tids_for_ac(ac); |
1060 | ||
1061 | indicate_tim |= | |
1062 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
1063 | indicate_tim |= |
1064 | sta->txq_buffered_tids & tids; | |
d0709a65 | 1065 | } |
004c872e | 1066 | |
c868cb35 | 1067 | done: |
65f704a5 | 1068 | spin_lock_bh(&local->tim_lock); |
004c872e | 1069 | |
3d5839b6 IP |
1070 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
1071 | goto out_unlock; | |
1072 | ||
948d887d | 1073 | if (indicate_tim) |
d012a605 | 1074 | __bss_tim_set(ps->tim, id); |
c868cb35 | 1075 | else |
d012a605 | 1076 | __bss_tim_clear(ps->tim, id); |
004c872e | 1077 | |
9b7a86f3 | 1078 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 1079 | local->tim_in_locked_section = true; |
948d887d | 1080 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
1081 | local->tim_in_locked_section = false; |
1082 | } | |
3e122be0 | 1083 | |
3d5839b6 | 1084 | out_unlock: |
65f704a5 | 1085 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
1086 | } |
1087 | ||
9b7a86f3 JB |
1088 | void sta_info_recalc_tim(struct sta_info *sta) |
1089 | { | |
1090 | __sta_info_recalc_tim(sta, false); | |
1091 | } | |
1092 | ||
cd0b8d89 | 1093 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 1094 | { |
e039fa4a | 1095 | struct ieee80211_tx_info *info; |
f0706e82 JB |
1096 | int timeout; |
1097 | ||
1098 | if (!skb) | |
cd0b8d89 | 1099 | return false; |
f0706e82 | 1100 | |
e039fa4a | 1101 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
1102 | |
1103 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
1104 | timeout = (sta->listen_interval * |
1105 | sta->sdata->vif.bss_conf.beacon_int * | |
1106 | 32 / 15625) * HZ; | |
f0706e82 JB |
1107 | if (timeout < STA_TX_BUFFER_EXPIRE) |
1108 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 1109 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
1110 | } |
1111 | ||
1112 | ||
948d887d JB |
1113 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
1114 | struct sta_info *sta, int ac) | |
f0706e82 JB |
1115 | { |
1116 | unsigned long flags; | |
1117 | struct sk_buff *skb; | |
1118 | ||
60750397 JB |
1119 | /* |
1120 | * First check for frames that should expire on the filtered | |
1121 | * queue. Frames here were rejected by the driver and are on | |
1122 | * a separate queue to avoid reordering with normal PS-buffered | |
1123 | * frames. They also aren't accounted for right now in the | |
1124 | * total_ps_buffered counter. | |
1125 | */ | |
1126 | for (;;) { | |
948d887d JB |
1127 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
1128 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 1129 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1130 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
1131 | else |
1132 | skb = NULL; | |
948d887d | 1133 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
1134 | |
1135 | /* | |
1136 | * Frames are queued in order, so if this one | |
1137 | * hasn't expired yet we can stop testing. If | |
1138 | * we actually reached the end of the queue we | |
1139 | * also need to stop, of course. | |
1140 | */ | |
1141 | if (!skb) | |
1142 | break; | |
d4fa14cd | 1143 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
1144 | } |
1145 | ||
1146 | /* | |
1147 | * Now also check the normal PS-buffered queue, this will | |
1148 | * only find something if the filtered queue was emptied | |
1149 | * since the filtered frames are all before the normal PS | |
1150 | * buffered frames. | |
1151 | */ | |
f0706e82 | 1152 | for (;;) { |
948d887d JB |
1153 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
1154 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 1155 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1156 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 1157 | else |
f0706e82 | 1158 | skb = NULL; |
948d887d | 1159 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 1160 | |
60750397 JB |
1161 | /* |
1162 | * frames are queued in order, so if this one | |
1163 | * hasn't expired yet (or we reached the end of | |
1164 | * the queue) we can stop testing | |
1165 | */ | |
836341a7 | 1166 | if (!skb) |
f0706e82 | 1167 | break; |
836341a7 | 1168 | |
836341a7 | 1169 | local->total_ps_buffered--; |
bdcbd8e0 JB |
1170 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
1171 | sta->sta.addr); | |
d4fa14cd | 1172 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 1173 | } |
3393a608 | 1174 | |
60750397 JB |
1175 | /* |
1176 | * Finally, recalculate the TIM bit for this station -- it might | |
1177 | * now be clear because the station was too slow to retrieve its | |
1178 | * frames. | |
1179 | */ | |
1180 | sta_info_recalc_tim(sta); | |
1181 | ||
1182 | /* | |
1183 | * Return whether there are any frames still buffered, this is | |
1184 | * used to check whether the cleanup timer still needs to run, | |
1185 | * if there are no frames we don't need to rearm the timer. | |
1186 | */ | |
948d887d JB |
1187 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
1188 | skb_queue_empty(&sta->tx_filtered[ac])); | |
1189 | } | |
1190 | ||
1191 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
1192 | struct sta_info *sta) | |
1193 | { | |
1194 | bool have_buffered = false; | |
1195 | int ac; | |
1196 | ||
3f52b7e3 MP |
1197 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
1198 | if (!sta->sdata->bss && | |
1199 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
1200 | return false; |
1201 | ||
1202 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1203 | have_buffered |= | |
1204 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
1205 | ||
1206 | return have_buffered; | |
f0706e82 JB |
1207 | } |
1208 | ||
d778207b | 1209 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 1210 | { |
34e89507 JB |
1211 | struct ieee80211_local *local; |
1212 | struct ieee80211_sub_if_data *sdata; | |
0ad49045 | 1213 | int ret, i; |
f0706e82 | 1214 | |
34e89507 | 1215 | might_sleep(); |
f0706e82 | 1216 | |
34e89507 JB |
1217 | if (!sta) |
1218 | return -ENOENT; | |
5bb644a0 | 1219 | |
34e89507 JB |
1220 | local = sta->local; |
1221 | sdata = sta->sdata; | |
f0706e82 | 1222 | |
4d3acf43 | 1223 | lockdep_assert_wiphy(local->hw.wiphy); |
83d5cc01 | 1224 | |
098a6070 JB |
1225 | /* |
1226 | * Before removing the station from the driver and | |
1227 | * rate control, it might still start new aggregation | |
1228 | * sessions -- block that to make sure the tear-down | |
1229 | * will be sufficient. | |
1230 | */ | |
c2c98fde | 1231 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1232 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1233 | |
f59374eb SS |
1234 | /* |
1235 | * Before removing the station from the driver there might be pending | |
1236 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1237 | * all such frames to be processed. | |
1238 | */ | |
1239 | drv_sync_rx_queues(local, sta); | |
1240 | ||
0ad49045 JB |
1241 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { |
1242 | struct link_sta_info *link_sta; | |
1243 | ||
1244 | if (!(sta->sta.valid_links & BIT(i))) | |
1245 | continue; | |
1246 | ||
1247 | link_sta = rcu_dereference_protected(sta->link[i], | |
4d3acf43 | 1248 | lockdep_is_held(&local->hw.wiphy->mtx)); |
0ad49045 JB |
1249 | |
1250 | link_sta_info_hash_del(local, link_sta); | |
1251 | } | |
1252 | ||
34e89507 | 1253 | ret = sta_info_hash_del(local, sta); |
b01711be | 1254 | if (WARN_ON(ret)) |
34e89507 JB |
1255 | return ret; |
1256 | ||
a7a6bdd0 AN |
1257 | /* |
1258 | * for TDLS peers, make sure to return to the base channel before | |
1259 | * removal. | |
1260 | */ | |
1261 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1262 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1263 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1264 | } | |
1265 | ||
794454ce | 1266 | list_del_rcu(&sta->list); |
ef044763 | 1267 | sta->removed = true; |
4d33960b | 1268 | |
12b220a6 FF |
1269 | if (sta->uploaded) |
1270 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); | |
6a9d1b91 | 1271 | |
a710c816 JB |
1272 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1273 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1274 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1275 | ||
d778207b JB |
1276 | return 0; |
1277 | } | |
1278 | ||
92747f17 JB |
1279 | static int _sta_info_move_state(struct sta_info *sta, |
1280 | enum ieee80211_sta_state new_state, | |
1281 | bool recalc) | |
10a7ba92 | 1282 | { |
06d6af4e JB |
1283 | struct ieee80211_local *local = sta->local; |
1284 | ||
10a7ba92 JB |
1285 | might_sleep(); |
1286 | ||
1287 | if (sta->sta_state == new_state) | |
1288 | return 0; | |
1289 | ||
1290 | /* check allowed transitions first */ | |
1291 | ||
1292 | switch (new_state) { | |
1293 | case IEEE80211_STA_NONE: | |
1294 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1295 | return -EINVAL; | |
1296 | break; | |
1297 | case IEEE80211_STA_AUTH: | |
1298 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1299 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1300 | return -EINVAL; | |
1301 | break; | |
1302 | case IEEE80211_STA_ASSOC: | |
1303 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1304 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1305 | return -EINVAL; | |
1306 | break; | |
1307 | case IEEE80211_STA_AUTHORIZED: | |
1308 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1309 | return -EINVAL; | |
1310 | break; | |
1311 | default: | |
1312 | WARN(1, "invalid state %d", new_state); | |
1313 | return -EINVAL; | |
1314 | } | |
1315 | ||
1316 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", | |
1317 | sta->sta.addr, new_state); | |
1318 | ||
1319 | /* notify the driver before the actual changes so it can | |
1320 | * fail the transition | |
1321 | */ | |
1322 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1323 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1324 | sta->sta_state, new_state); | |
1325 | if (err) | |
1326 | return err; | |
1327 | } | |
1328 | ||
1329 | /* reflect the change in all state variables */ | |
1330 | ||
1331 | switch (new_state) { | |
1332 | case IEEE80211_STA_NONE: | |
1333 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1334 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
1335 | break; | |
1336 | case IEEE80211_STA_AUTH: | |
1337 | if (sta->sta_state == IEEE80211_STA_NONE) { | |
1338 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1339 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { | |
1340 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
92747f17 JB |
1341 | if (recalc) { |
1342 | ieee80211_recalc_min_chandef(sta->sdata, -1); | |
1343 | if (!sta->sta.support_p2p_ps) | |
1344 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
1345 | } | |
10a7ba92 JB |
1346 | } |
1347 | break; | |
1348 | case IEEE80211_STA_ASSOC: | |
1349 | if (sta->sta_state == IEEE80211_STA_AUTH) { | |
1350 | set_bit(WLAN_STA_ASSOC, &sta->_flags); | |
1351 | sta->assoc_at = ktime_get_boottime_ns(); | |
92747f17 JB |
1352 | if (recalc) { |
1353 | ieee80211_recalc_min_chandef(sta->sdata, -1); | |
1354 | if (!sta->sta.support_p2p_ps) | |
1355 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
1356 | } | |
10a7ba92 JB |
1357 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
1358 | ieee80211_vif_dec_num_mcast(sta->sdata); | |
1359 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); | |
06d6af4e JB |
1360 | |
1361 | /* | |
1362 | * If we have encryption offload, flush (station) queues | |
1363 | * (after ensuring concurrent TX completed) so we won't | |
1364 | * transmit anything later unencrypted if/when keys are | |
1365 | * also removed, which might otherwise happen depending | |
1366 | * on how the hardware offload works. | |
1367 | */ | |
1368 | if (local->ops->set_key) { | |
1369 | synchronize_net(); | |
1370 | if (local->ops->flush_sta) | |
1371 | drv_flush_sta(local, sta->sdata, sta); | |
1372 | else | |
1373 | ieee80211_flush_queues(local, | |
1374 | sta->sdata, | |
1375 | false); | |
1376 | } | |
1377 | ||
10a7ba92 JB |
1378 | ieee80211_clear_fast_xmit(sta); |
1379 | ieee80211_clear_fast_rx(sta); | |
1380 | } | |
1381 | break; | |
1382 | case IEEE80211_STA_AUTHORIZED: | |
1383 | if (sta->sta_state == IEEE80211_STA_ASSOC) { | |
1384 | ieee80211_vif_inc_num_mcast(sta->sdata); | |
1385 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); | |
1386 | ieee80211_check_fast_xmit(sta); | |
1387 | ieee80211_check_fast_rx(sta); | |
1388 | } | |
1389 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1390 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
1391 | cfg80211_send_layer2_update(sta->sdata->dev, | |
1392 | sta->sta.addr); | |
1393 | break; | |
1394 | default: | |
1395 | break; | |
1396 | } | |
1397 | ||
1398 | sta->sta_state = new_state; | |
1399 | ||
1400 | return 0; | |
1401 | } | |
1402 | ||
92747f17 JB |
1403 | int sta_info_move_state(struct sta_info *sta, |
1404 | enum ieee80211_sta_state new_state) | |
1405 | { | |
1406 | return _sta_info_move_state(sta, new_state, true); | |
1407 | } | |
1408 | ||
1409 | static void __sta_info_destroy_part2(struct sta_info *sta, bool recalc) | |
d778207b JB |
1410 | { |
1411 | struct ieee80211_local *local = sta->local; | |
1412 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1413 | struct station_info *sinfo; |
d778207b JB |
1414 | int ret; |
1415 | ||
1416 | /* | |
1417 | * NOTE: This assumes at least synchronize_net() was done | |
1418 | * after _part1 and before _part2! | |
1419 | */ | |
1420 | ||
05f13622 JB |
1421 | /* |
1422 | * There's a potential race in _part1 where we set WLAN_STA_BLOCK_BA | |
1423 | * but someone might have just gotten past a check, and not yet into | |
1424 | * queuing the work/creating the data/etc. | |
1425 | * | |
1426 | * Do another round of destruction so that the worker is certainly | |
1427 | * canceled before we later free the station. | |
1428 | * | |
1429 | * Since this is after synchronize_rcu()/synchronize_net() we're now | |
1430 | * certain that nobody can actually hold a reference to the STA and | |
1431 | * be calling e.g. ieee80211_start_tx_ba_session(). | |
1432 | */ | |
1433 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); | |
1434 | ||
d778207b | 1435 | might_sleep(); |
4d3acf43 | 1436 | lockdep_assert_wiphy(local->hw.wiphy); |
d778207b | 1437 | |
5981fe5b | 1438 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
92747f17 | 1439 | ret = _sta_info_move_state(sta, IEEE80211_STA_ASSOC, recalc); |
b16798f5 JB |
1440 | WARN_ON_ONCE(ret); |
1441 | } | |
1442 | ||
c8782078 | 1443 | /* now keys can no longer be reached */ |
6d10e46b | 1444 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1445 | |
9b7a86f3 JB |
1446 | /* disable TIM bit - last chance to tell driver */ |
1447 | __sta_info_recalc_tim(sta, true); | |
1448 | ||
34e89507 JB |
1449 | sta->dead = true; |
1450 | ||
34e89507 JB |
1451 | local->num_sta--; |
1452 | local->sta_generation++; | |
1453 | ||
83d5cc01 | 1454 | while (sta->sta_state > IEEE80211_STA_NONE) { |
92747f17 | 1455 | ret = _sta_info_move_state(sta, sta->sta_state - 1, recalc); |
f09603a2 | 1456 | if (ret) { |
83d5cc01 JB |
1457 | WARN_ON_ONCE(1); |
1458 | break; | |
1459 | } | |
1460 | } | |
d9a7ddb0 | 1461 | |
f09603a2 | 1462 | if (sta->uploaded) { |
f09603a2 JB |
1463 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1464 | IEEE80211_STA_NOTEXIST); | |
1465 | WARN_ON_ONCE(ret != 0); | |
1466 | } | |
34e89507 | 1467 | |
bdcbd8e0 JB |
1468 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1469 | ||
0ef049dc AB |
1470 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1471 | if (sinfo) | |
0fdf1493 | 1472 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1473 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1474 | kfree(sinfo); | |
ec15e68b | 1475 | |
34e89507 JB |
1476 | ieee80211_sta_debugfs_remove(sta); |
1477 | ||
3a11ce08 JB |
1478 | ieee80211_destroy_frag_cache(&sta->frags); |
1479 | ||
d34ba216 | 1480 | cleanup_single_sta(sta); |
d778207b JB |
1481 | } |
1482 | ||
1483 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1484 | { | |
1485 | int err = __sta_info_destroy_part1(sta); | |
1486 | ||
1487 | if (err) | |
1488 | return err; | |
1489 | ||
1490 | synchronize_net(); | |
1491 | ||
92747f17 | 1492 | __sta_info_destroy_part2(sta, true); |
34e89507 JB |
1493 | |
1494 | return 0; | |
4d6141c3 JS |
1495 | } |
1496 | ||
34e89507 | 1497 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1498 | { |
34e89507 | 1499 | struct sta_info *sta; |
4d6141c3 | 1500 | |
4d3acf43 | 1501 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
4d6141c3 | 1502 | |
4d3acf43 JB |
1503 | sta = sta_info_get(sdata, addr); |
1504 | return __sta_info_destroy(sta); | |
4d6141c3 JS |
1505 | } |
1506 | ||
34e89507 JB |
1507 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1508 | const u8 *addr) | |
e9f207f0 | 1509 | { |
34e89507 | 1510 | struct sta_info *sta; |
e9f207f0 | 1511 | |
4d3acf43 | 1512 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
d0709a65 | 1513 | |
4d3acf43 JB |
1514 | sta = sta_info_get_bss(sdata, addr); |
1515 | return __sta_info_destroy(sta); | |
34e89507 | 1516 | } |
e9f207f0 | 1517 | |
34f11cd3 | 1518 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1519 | { |
34f11cd3 | 1520 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1521 | struct sta_info *sta; |
3393a608 | 1522 | bool timer_needed = false; |
34e89507 JB |
1523 | |
1524 | rcu_read_lock(); | |
1525 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1526 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1527 | timer_needed = true; | |
34e89507 | 1528 | rcu_read_unlock(); |
e9f207f0 | 1529 | |
34e89507 JB |
1530 | if (local->quiescing) |
1531 | return; | |
d0709a65 | 1532 | |
3393a608 JO |
1533 | if (!timer_needed) |
1534 | return; | |
1535 | ||
26d59535 JB |
1536 | mod_timer(&local->sta_cleanup, |
1537 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1538 | } |
e9f207f0 | 1539 | |
7bedd0cf JB |
1540 | int sta_info_init(struct ieee80211_local *local) |
1541 | { | |
1542 | int err; | |
1543 | ||
83e7e4ce | 1544 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1545 | if (err) |
1546 | return err; | |
1547 | ||
ba6ddab9 JB |
1548 | err = rhltable_init(&local->link_sta_hash, &link_sta_rht_params); |
1549 | if (err) { | |
1550 | rhltable_destroy(&local->sta_hash); | |
1551 | return err; | |
1552 | } | |
1553 | ||
4d33960b | 1554 | spin_lock_init(&local->tim_lock); |
f0706e82 | 1555 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1556 | |
34f11cd3 | 1557 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1558 | return 0; |
f0706e82 JB |
1559 | } |
1560 | ||
1561 | void sta_info_stop(struct ieee80211_local *local) | |
1562 | { | |
a56f992c | 1563 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1564 | rhltable_destroy(&local->sta_hash); |
ba6ddab9 | 1565 | rhltable_destroy(&local->link_sta_hash); |
f0706e82 JB |
1566 | } |
1567 | ||
051007d9 | 1568 | |
ec67d6e0 AKS |
1569 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans, |
1570 | int link_id) | |
f0706e82 | 1571 | { |
b998e8bb | 1572 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1573 | struct sta_info *sta, *tmp; |
d778207b | 1574 | LIST_HEAD(free_list); |
44213b5e | 1575 | int ret = 0; |
f0706e82 | 1576 | |
d0709a65 | 1577 | might_sleep(); |
4d3acf43 | 1578 | lockdep_assert_wiphy(local->hw.wiphy); |
be8755e1 | 1579 | |
e716251d JB |
1580 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1581 | WARN_ON(vlans && !sdata->bss); | |
1582 | ||
d0709a65 | 1583 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
ec67d6e0 AKS |
1584 | if (sdata != sta->sdata && |
1585 | (!vlans || sdata->bss != sta->sdata->bss)) | |
1586 | continue; | |
1587 | ||
1588 | if (link_id >= 0 && sta->sta.valid_links && | |
1589 | !(sta->sta.valid_links & BIT(link_id))) | |
1590 | continue; | |
1591 | ||
1592 | if (!WARN_ON(__sta_info_destroy_part1(sta))) | |
1593 | list_add(&sta->free_list, &free_list); | |
1594 | ||
1595 | ret++; | |
be8755e1 | 1596 | } |
d778207b JB |
1597 | |
1598 | if (!list_empty(&free_list)) { | |
92747f17 JB |
1599 | bool support_p2p_ps = true; |
1600 | ||
d778207b | 1601 | synchronize_net(); |
92747f17 JB |
1602 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) { |
1603 | if (!sta->sta.support_p2p_ps) | |
1604 | support_p2p_ps = false; | |
1605 | __sta_info_destroy_part2(sta, false); | |
1606 | } | |
1607 | ||
1608 | ieee80211_recalc_min_chandef(sdata, -1); | |
1609 | if (!support_p2p_ps) | |
1610 | ieee80211_recalc_p2p_go_ps_allowed(sdata); | |
d778207b | 1611 | } |
44213b5e | 1612 | |
051007d9 JB |
1613 | return ret; |
1614 | } | |
1615 | ||
24723d1b JB |
1616 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1617 | unsigned long exp_time) | |
1618 | { | |
1619 | struct ieee80211_local *local = sdata->local; | |
1620 | struct sta_info *sta, *tmp; | |
24723d1b | 1621 | |
4d3acf43 | 1622 | lockdep_assert_wiphy(local->hw.wiphy); |
e46a2cf9 MSS |
1623 | |
1624 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1625 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1626 | ||
ec2b774e ML |
1627 | if (sdata != sta->sdata) |
1628 | continue; | |
1629 | ||
b8da6b6a | 1630 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1631 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1632 | sta->sta.addr); | |
3f52b7e3 MP |
1633 | |
1634 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1635 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1636 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1637 | ||
34e89507 | 1638 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1639 | } |
e46a2cf9 | 1640 | } |
24723d1b | 1641 | } |
17741cdc | 1642 | |
686b9cb9 | 1643 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1644 | const u8 *addr, |
1645 | const u8 *localaddr) | |
17741cdc | 1646 | { |
7bedd0cf | 1647 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1648 | struct rhlist_head *tmp; |
7bedd0cf | 1649 | struct sta_info *sta; |
17741cdc | 1650 | |
686b9cb9 BG |
1651 | /* |
1652 | * Just return a random station if localaddr is NULL | |
1653 | * ... first in list. | |
1654 | */ | |
83e7e4ce | 1655 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1656 | if (localaddr && |
b203ca39 | 1657 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1658 | continue; |
f7c65594 JB |
1659 | if (!sta->uploaded) |
1660 | return NULL; | |
abe60632 | 1661 | return &sta->sta; |
f7c65594 JB |
1662 | } |
1663 | ||
abe60632 | 1664 | return NULL; |
17741cdc | 1665 | } |
686b9cb9 | 1666 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1667 | |
1668 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1669 | const u8 *addr) | |
1670 | { | |
f7c65594 | 1671 | struct sta_info *sta; |
5ed176e1 JB |
1672 | |
1673 | if (!vif) | |
1674 | return NULL; | |
1675 | ||
f7c65594 JB |
1676 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1677 | if (!sta) | |
1678 | return NULL; | |
1679 | ||
1680 | if (!sta->uploaded) | |
1681 | return NULL; | |
5ed176e1 | 1682 | |
f7c65594 | 1683 | return &sta->sta; |
5ed176e1 | 1684 | } |
17741cdc | 1685 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1686 | |
e3685e03 JB |
1687 | /* powersave support code */ |
1688 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1689 | { |
608383bf | 1690 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1691 | struct ieee80211_local *local = sdata->local; |
1692 | struct sk_buff_head pending; | |
ba8c3d6f | 1693 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1694 | unsigned long flags; |
d012a605 MP |
1695 | struct ps_data *ps; |
1696 | ||
3918edb0 FF |
1697 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1698 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1699 | u.ap); | |
1700 | ||
1701 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1702 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1703 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1704 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1705 | else |
1706 | return; | |
50a9432d | 1707 | |
c2c98fde | 1708 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1709 | |
5a306f58 | 1710 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1711 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1712 | sta->txq_buffered_tids = 0; |
af818581 | 1713 | |
30686bf7 | 1714 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1715 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1716 | |
adf8ed01 JB |
1717 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1718 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1719 | continue; | |
ba8c3d6f | 1720 | |
18667600 | 1721 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1722 | } |
1723 | ||
948d887d | 1724 | skb_queue_head_init(&pending); |
af818581 | 1725 | |
1d147bfa | 1726 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
44c06bbd | 1727 | spin_lock_bh(&sta->ps_lock); |
af818581 | 1728 | /* Send all buffered frames to the station */ |
948d887d JB |
1729 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1730 | int count = skb_queue_len(&pending), tmp; | |
1731 | ||
987c285c | 1732 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1733 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1734 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1735 | tmp = skb_queue_len(&pending); |
1736 | filtered += tmp - count; | |
1737 | count = tmp; | |
1738 | ||
987c285c | 1739 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1740 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1741 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1742 | tmp = skb_queue_len(&pending); |
1743 | buffered += tmp - count; | |
1744 | } | |
1745 | ||
e3685e03 | 1746 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1747 | |
1748 | /* now we're no longer in the deliver code */ | |
1749 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1750 | ||
1751 | /* The station might have polled and then woken up before we responded, | |
1752 | * so clear these flags now to avoid them sticking around. | |
1753 | */ | |
1754 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1755 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
44c06bbd | 1756 | spin_unlock_bh(&sta->ps_lock); |
948d887d | 1757 | |
e3685e03 JB |
1758 | atomic_dec(&ps->num_sta_ps); |
1759 | ||
af818581 JB |
1760 | local->total_ps_buffered -= buffered; |
1761 | ||
c868cb35 JB |
1762 | sta_info_recalc_tim(sta); |
1763 | ||
bdcbd8e0 | 1764 | ps_dbg(sdata, |
2595d259 | 1765 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1766 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1767 | |
1768 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1769 | } |
1770 | ||
0ead2510 | 1771 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1772 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1773 | bool call_driver, bool more_data) |
af818581 | 1774 | { |
0ead2510 | 1775 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1776 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1777 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1778 | struct sk_buff *skb; |
ce662b44 JB |
1779 | int size = sizeof(*nullfunc); |
1780 | __le16 fc; | |
a74a8c84 | 1781 | bool qos = sta->sta.wme; |
ce662b44 | 1782 | struct ieee80211_tx_info *info; |
55de908a | 1783 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1784 | |
ce662b44 JB |
1785 | if (qos) { |
1786 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1787 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1788 | IEEE80211_FCTL_FROMDS); | |
1789 | } else { | |
1790 | size -= 2; | |
1791 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1792 | IEEE80211_STYPE_NULLFUNC | | |
1793 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1794 | } |
af818581 | 1795 | |
ce662b44 JB |
1796 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1797 | if (!skb) | |
1798 | return; | |
1799 | ||
1800 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1801 | ||
4df864c1 | 1802 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1803 | nullfunc->frame_control = fc; |
1804 | nullfunc->duration_id = 0; | |
1805 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1806 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1807 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1808 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1809 | |
59b66255 JB |
1810 | skb->priority = tid; |
1811 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1812 | if (qos) { |
ce662b44 JB |
1813 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1814 | ||
0ead2510 | 1815 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1816 | nullfunc->qos_ctrl |= |
1817 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1818 | if (more_data) |
1819 | nullfunc->frame_control |= | |
1820 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1821 | } | |
ce662b44 JB |
1822 | } |
1823 | ||
1824 | info = IEEE80211_SKB_CB(skb); | |
1825 | ||
1826 | /* | |
1827 | * Tell TX path to send this frame even though the | |
1828 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1829 | * exchange. Also set EOSP to indicate this packet |
1830 | * ends the poll/service period. | |
ce662b44 | 1831 | */ |
02f2f1a9 | 1832 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1833 | IEEE80211_TX_STATUS_EOSP | |
1834 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1835 | |
6b127c71 SM |
1836 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1837 | ||
b77cf4f8 JB |
1838 | if (call_driver) |
1839 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1840 | reason, false); | |
40b96408 | 1841 | |
89afe614 JB |
1842 | skb->dev = sdata->dev; |
1843 | ||
55de908a | 1844 | rcu_read_lock(); |
d0a9123e | 1845 | chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
55de908a JB |
1846 | if (WARN_ON(!chanctx_conf)) { |
1847 | rcu_read_unlock(); | |
1848 | kfree_skb(skb); | |
1849 | return; | |
1850 | } | |
1851 | ||
73c4e195 | 1852 | info->band = chanctx_conf->def.chan->band; |
08aca29a | 1853 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1854 | rcu_read_unlock(); |
ce662b44 JB |
1855 | } |
1856 | ||
0a1cb809 JB |
1857 | static int find_highest_prio_tid(unsigned long tids) |
1858 | { | |
1859 | /* lower 3 TIDs aren't ordered perfectly */ | |
1860 | if (tids & 0xF8) | |
1861 | return fls(tids) - 1; | |
1862 | /* TID 0 is BE just like TID 3 */ | |
1863 | if (tids & BIT(0)) | |
1864 | return 0; | |
1865 | return fls(tids) - 1; | |
1866 | } | |
1867 | ||
0ead2510 EG |
1868 | /* Indicates if the MORE_DATA bit should be set in the last |
1869 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1870 | * Note that driver_release_tids is relevant only if | |
1871 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1872 | */ | |
1873 | static bool | |
1874 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1875 | enum ieee80211_frame_release_type reason, | |
1876 | unsigned long driver_release_tids) | |
1877 | { | |
1878 | int ac; | |
1879 | ||
1880 | /* If the driver has data on more than one TID then | |
1881 | * certainly there's more data if we release just a | |
1882 | * single frame now (from a single TID). This will | |
1883 | * only happen for PS-Poll. | |
1884 | */ | |
1885 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1886 | hweight16(driver_release_tids) > 1) | |
1887 | return true; | |
1888 | ||
1889 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1890 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1891 | continue; |
1892 | ||
1893 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1894 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1895 | return true; | |
1896 | } | |
1897 | ||
1898 | return false; | |
1899 | } | |
1900 | ||
47086fc5 | 1901 | static void |
0ead2510 EG |
1902 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1903 | enum ieee80211_frame_release_type reason, | |
1904 | struct sk_buff_head *frames, | |
1905 | unsigned long *driver_release_tids) | |
af818581 JB |
1906 | { |
1907 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1908 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1909 | int ac; |
948d887d | 1910 | |
f9f760b4 | 1911 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1912 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1913 | unsigned long tids; |
1914 | ||
f438ceb8 | 1915 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1916 | continue; |
1917 | ||
4049e09a JB |
1918 | tids = ieee80211_tids_for_ac(ac); |
1919 | ||
f9f760b4 JB |
1920 | /* if we already have frames from software, then we can't also |
1921 | * release from hardware queues | |
1922 | */ | |
0ead2510 EG |
1923 | if (skb_queue_empty(frames)) { |
1924 | *driver_release_tids |= | |
1925 | sta->driver_buffered_tids & tids; | |
1926 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1927 | } |
948d887d | 1928 | |
0ead2510 | 1929 | if (!*driver_release_tids) { |
f9f760b4 JB |
1930 | struct sk_buff *skb; |
1931 | ||
1932 | while (n_frames > 0) { | |
1933 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1934 | if (!skb) { | |
1935 | skb = skb_dequeue( | |
1936 | &sta->ps_tx_buf[ac]); | |
1937 | if (skb) | |
1938 | local->total_ps_buffered--; | |
1939 | } | |
1940 | if (!skb) | |
1941 | break; | |
1942 | n_frames--; | |
0ead2510 | 1943 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1944 | } |
4049e09a | 1945 | } |
948d887d | 1946 | |
0ead2510 EG |
1947 | /* If we have more frames buffered on this AC, then abort the |
1948 | * loop since we can't send more data from other ACs before | |
1949 | * the buffered frames from this. | |
f9f760b4 | 1950 | */ |
948d887d | 1951 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1952 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1953 | break; |
af818581 | 1954 | } |
0ead2510 EG |
1955 | } |
1956 | ||
1957 | static void | |
1958 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1959 | int n_frames, u8 ignored_acs, | |
1960 | enum ieee80211_frame_release_type reason) | |
1961 | { | |
1962 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1963 | struct ieee80211_local *local = sdata->local; | |
1964 | unsigned long driver_release_tids = 0; | |
1965 | struct sk_buff_head frames; | |
1966 | bool more_data; | |
1967 | ||
1968 | /* Service or PS-Poll period starts */ | |
1969 | set_sta_flag(sta, WLAN_STA_SP); | |
1970 | ||
1971 | __skb_queue_head_init(&frames); | |
1972 | ||
1973 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1974 | &frames, &driver_release_tids); | |
1975 | ||
1976 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1977 | ||
1a57081a | 1978 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1979 | driver_release_tids = |
1980 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1981 | |
f9f760b4 | 1982 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1983 | int tid, ac; |
af818581 JB |
1984 | |
1985 | /* | |
ce662b44 JB |
1986 | * For PS-Poll, this can only happen due to a race condition |
1987 | * when we set the TIM bit and the station notices it, but | |
1988 | * before it can poll for the frame we expire it. | |
1989 | * | |
1990 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1991 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1992 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1993 | * more than the value specified in the Max SP Length field | |
1994 | * in the QoS Capability element from delivery-enabled ACs, | |
1995 | * that are destined for the non-AP STA. | |
1996 | * | |
1997 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1998 | */ |
af818581 | 1999 | |
ce662b44 | 2000 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 2001 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
2002 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
2003 | break; | |
f438ceb8 | 2004 | tid = 7 - 2 * ac; |
af818581 | 2005 | |
0ead2510 | 2006 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 2007 | } else if (!driver_release_tids) { |
47086fc5 JB |
2008 | struct sk_buff_head pending; |
2009 | struct sk_buff *skb; | |
40b96408 JB |
2010 | int num = 0; |
2011 | u16 tids = 0; | |
b77cf4f8 | 2012 | bool need_null = false; |
af818581 | 2013 | |
47086fc5 | 2014 | skb_queue_head_init(&pending); |
af818581 | 2015 | |
47086fc5 JB |
2016 | while ((skb = __skb_dequeue(&frames))) { |
2017 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
2018 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
2019 | u8 *qoshdr = NULL; |
2020 | ||
2021 | num++; | |
af818581 | 2022 | |
47086fc5 JB |
2023 | /* |
2024 | * Tell TX path to send this frame even though the | |
2025 | * STA may still remain is PS mode after this frame | |
2026 | * exchange. | |
2027 | */ | |
6b127c71 SM |
2028 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
2029 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
2030 | |
2031 | /* | |
2032 | * Use MoreData flag to indicate whether there are | |
2033 | * more buffered frames for this STA | |
2034 | */ | |
24b9c373 | 2035 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
2036 | hdr->frame_control |= |
2037 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
2038 | else |
2039 | hdr->frame_control &= | |
2040 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 2041 | |
40b96408 JB |
2042 | if (ieee80211_is_data_qos(hdr->frame_control) || |
2043 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
2044 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
2045 | ||
b77cf4f8 | 2046 | tids |= BIT(skb->priority); |
52a3f20c | 2047 | |
b77cf4f8 JB |
2048 | __skb_queue_tail(&pending, skb); |
2049 | ||
2050 | /* end service period after last frame or add one */ | |
2051 | if (!skb_queue_empty(&frames)) | |
2052 | continue; | |
2053 | ||
2054 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
2055 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
2056 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
2057 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 2058 | break; |
52a3f20c | 2059 | } |
deeaee19 | 2060 | |
b77cf4f8 JB |
2061 | /* For uAPSD, things are a bit more complicated. If the |
2062 | * last frame has a QoS header (i.e. is a QoS-data or | |
2063 | * QoS-nulldata frame) then just set the EOSP bit there | |
2064 | * and be done. | |
2065 | * If the frame doesn't have a QoS header (which means | |
2066 | * it should be a bufferable MMPDU) then we can't set | |
2067 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
2068 | * frame to the list to send it after the MMPDU. | |
2069 | * | |
2070 | * Note that this code is only in the mac80211-release | |
2071 | * code path, we assume that the driver will not buffer | |
2072 | * anything but QoS-data frames, or if it does, will | |
2073 | * create the QoS-nulldata frame by itself if needed. | |
2074 | * | |
2075 | * Cf. 802.11-2012 10.2.1.10 (c). | |
2076 | */ | |
2077 | if (qoshdr) { | |
2078 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 2079 | |
b77cf4f8 JB |
2080 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
2081 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
2082 | } else { | |
2083 | /* The standard isn't completely clear on this | |
2084 | * as it says the more-data bit should be set | |
2085 | * if there are more BUs. The QoS-Null frame | |
2086 | * we're about to send isn't buffered yet, we | |
2087 | * only create it below, but let's pretend it | |
2088 | * was buffered just in case some clients only | |
2089 | * expect more-data=0 when eosp=1. | |
2090 | */ | |
2091 | hdr->frame_control |= | |
2092 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
2093 | need_null = true; | |
2094 | num++; | |
2095 | } | |
2096 | break; | |
47086fc5 | 2097 | } |
af818581 | 2098 | |
40b96408 JB |
2099 | drv_allow_buffered_frames(local, sta, tids, num, |
2100 | reason, more_data); | |
2101 | ||
47086fc5 | 2102 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 2103 | |
b77cf4f8 JB |
2104 | if (need_null) |
2105 | ieee80211_send_null_response( | |
0ead2510 EG |
2106 | sta, find_highest_prio_tid(tids), |
2107 | reason, false, false); | |
b77cf4f8 | 2108 | |
c868cb35 | 2109 | sta_info_recalc_tim(sta); |
af818581 | 2110 | } else { |
ba8c3d6f FF |
2111 | int tid; |
2112 | ||
af818581 | 2113 | /* |
4049e09a JB |
2114 | * We need to release a frame that is buffered somewhere in the |
2115 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
2116 | * Note that the driver also has to check the number of frames |
2117 | * on the TIDs we're releasing from - if there are more than | |
2118 | * n_frames it has to set the more-data bit (if we didn't ask | |
2119 | * it to set it anyway due to other buffered frames); if there | |
2120 | * are fewer than n_frames it has to make sure to adjust that | |
2121 | * to allow the service period to end properly. | |
4049e09a JB |
2122 | */ |
2123 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 2124 | n_frames, reason, more_data); |
4049e09a JB |
2125 | |
2126 | /* | |
2127 | * Note that we don't recalculate the TIM bit here as it would | |
2128 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 2129 | * that the TID(s) became empty before returning here from the |
4049e09a | 2130 | * release function. |
f9f760b4 | 2131 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
2132 | * became empty or we find that a txq became empty, we'll do the |
2133 | * TIM recalculation. | |
af818581 | 2134 | */ |
ba8c3d6f | 2135 | |
ba8c3d6f | 2136 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { |
adf8ed01 JB |
2137 | if (!sta->sta.txq[tid] || |
2138 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 2139 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
2140 | continue; |
2141 | ||
2142 | sta_info_recalc_tim(sta); | |
2143 | break; | |
2144 | } | |
af818581 JB |
2145 | } |
2146 | } | |
2147 | ||
47086fc5 JB |
2148 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
2149 | { | |
2150 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
2151 | ||
2152 | /* | |
2153 | * If all ACs are delivery-enabled then we should reply | |
2154 | * from any of them, if only some are enabled we reply | |
2155 | * only from the non-enabled ones. | |
2156 | */ | |
2157 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
2158 | ignore_for_response = 0; | |
2159 | ||
2160 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
2161 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
2162 | } | |
2163 | ||
2164 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
2165 | { | |
2166 | int n_frames = sta->sta.max_sp; | |
2167 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
2168 | ||
2169 | /* | |
2170 | * If we ever grow support for TSPEC this might happen if | |
2171 | * the TSPEC update from hostapd comes in between a trigger | |
2172 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
2173 | * actually getting called. | |
2174 | */ | |
2175 | if (!delivery_enabled) | |
2176 | return; | |
2177 | ||
47086fc5 JB |
2178 | switch (sta->sta.max_sp) { |
2179 | case 1: | |
2180 | n_frames = 2; | |
2181 | break; | |
2182 | case 2: | |
2183 | n_frames = 4; | |
2184 | break; | |
2185 | case 3: | |
2186 | n_frames = 6; | |
2187 | break; | |
2188 | case 0: | |
2189 | /* XXX: what is a good value? */ | |
13a8098a | 2190 | n_frames = 128; |
47086fc5 JB |
2191 | break; |
2192 | } | |
2193 | ||
2194 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
2195 | IEEE80211_FRAME_RELEASE_UAPSD); | |
2196 | } | |
2197 | ||
af818581 JB |
2198 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
2199 | struct ieee80211_sta *pubsta, bool block) | |
2200 | { | |
2201 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2202 | ||
b5878a2d JB |
2203 | trace_api_sta_block_awake(sta->local, pubsta, block); |
2204 | ||
5ac2e350 | 2205 | if (block) { |
c2c98fde | 2206 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 2207 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
2208 | return; |
2209 | } | |
2210 | ||
2211 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
2212 | return; | |
2213 | ||
2214 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
2215 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
2216 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2217 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2218 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
2219 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
2220 | /* must be asleep in this case */ | |
2221 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2222 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2223 | } else { | |
2224 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 2225 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 2226 | } |
af818581 JB |
2227 | } |
2228 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 2229 | |
e943789e | 2230 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
2231 | { |
2232 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2233 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
2234 | |
2235 | trace_api_eosp(local, pubsta); | |
2236 | ||
e943789e | 2237 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 2238 | } |
e943789e | 2239 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 2240 | |
0ead2510 EG |
2241 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
2242 | { | |
2243 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2244 | enum ieee80211_frame_release_type reason; | |
2245 | bool more_data; | |
2246 | ||
2247 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
2248 | ||
2249 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
2250 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
2251 | reason, 0); | |
2252 | ||
2253 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
2254 | } | |
2255 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
2256 | ||
042ec453 JB |
2257 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
2258 | u8 tid, bool buffered) | |
dcf55fb5 FF |
2259 | { |
2260 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2261 | ||
5a306f58 | 2262 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
2263 | return; |
2264 | ||
1b000789 JB |
2265 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
2266 | ||
948d887d JB |
2267 | if (buffered) |
2268 | set_bit(tid, &sta->driver_buffered_tids); | |
2269 | else | |
2270 | clear_bit(tid, &sta->driver_buffered_tids); | |
2271 | ||
c868cb35 | 2272 | sta_info_recalc_tim(sta); |
dcf55fb5 | 2273 | } |
042ec453 | 2274 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 2275 | |
942741da FF |
2276 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
2277 | u32 tx_airtime, u32 rx_airtime) | |
b4809e94 | 2278 | { |
942741da FF |
2279 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
2280 | struct ieee80211_local *local = sta->sdata->local; | |
2281 | u8 ac = ieee80211_ac_from_tid(tid); | |
b4809e94 THJ |
2282 | u32 airtime = 0; |
2283 | ||
942741da | 2284 | if (sta->local->airtime_flags & AIRTIME_USE_TX) |
b4809e94 | 2285 | airtime += tx_airtime; |
942741da | 2286 | if (sta->local->airtime_flags & AIRTIME_USE_RX) |
b4809e94 THJ |
2287 | airtime += rx_airtime; |
2288 | ||
942741da FF |
2289 | spin_lock_bh(&local->active_txq_lock[ac]); |
2290 | sta->airtime[ac].tx_airtime += tx_airtime; | |
2291 | sta->airtime[ac].rx_airtime += rx_airtime; | |
c77bfab9 | 2292 | |
ea855f0b | 2293 | if (ieee80211_sta_keep_active(sta, ac)) |
c77bfab9 FF |
2294 | sta->airtime[ac].deficit -= airtime; |
2295 | ||
942741da | 2296 | spin_unlock_bh(&local->active_txq_lock[ac]); |
b4809e94 THJ |
2297 | } |
2298 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
2299 | ||
9b41a9d7 | 2300 | void __ieee80211_sta_recalc_aggregates(struct sta_info *sta, u16 active_links) |
4c51541d | 2301 | { |
4c51541d | 2302 | bool first = true; |
9b41a9d7 | 2303 | int link_id; |
4c51541d | 2304 | |
9b41a9d7 JB |
2305 | if (!sta->sta.valid_links || !sta->sta.mlo) { |
2306 | sta->sta.cur = &sta->sta.deflink.agg; | |
4c51541d BB |
2307 | return; |
2308 | } | |
2309 | ||
2310 | rcu_read_lock(); | |
9b41a9d7 JB |
2311 | for (link_id = 0; link_id < ARRAY_SIZE((sta)->link); link_id++) { |
2312 | struct ieee80211_link_sta *link_sta; | |
2313 | int i; | |
2314 | ||
2315 | if (!(active_links & BIT(link_id))) | |
2316 | continue; | |
2317 | ||
2318 | link_sta = rcu_dereference(sta->sta.link[link_id]); | |
2319 | if (!link_sta) | |
2320 | continue; | |
2321 | ||
4c51541d | 2322 | if (first) { |
9b41a9d7 | 2323 | sta->cur = sta->sta.deflink.agg; |
4c51541d BB |
2324 | first = false; |
2325 | continue; | |
2326 | } | |
2327 | ||
2328 | sta->cur.max_amsdu_len = | |
2329 | min(sta->cur.max_amsdu_len, | |
2330 | link_sta->agg.max_amsdu_len); | |
2331 | sta->cur.max_rc_amsdu_len = | |
2332 | min(sta->cur.max_rc_amsdu_len, | |
2333 | link_sta->agg.max_rc_amsdu_len); | |
2334 | ||
2335 | for (i = 0; i < ARRAY_SIZE(sta->cur.max_tid_amsdu_len); i++) | |
2336 | sta->cur.max_tid_amsdu_len[i] = | |
2337 | min(sta->cur.max_tid_amsdu_len[i], | |
2338 | link_sta->agg.max_tid_amsdu_len[i]); | |
2339 | } | |
2340 | rcu_read_unlock(); | |
2341 | ||
9b41a9d7 JB |
2342 | sta->sta.cur = &sta->cur; |
2343 | } | |
2344 | ||
2345 | void ieee80211_sta_recalc_aggregates(struct ieee80211_sta *pubsta) | |
2346 | { | |
2347 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2348 | ||
2349 | __ieee80211_sta_recalc_aggregates(sta, sta->sdata->vif.active_links); | |
4c51541d BB |
2350 | } |
2351 | EXPORT_SYMBOL(ieee80211_sta_recalc_aggregates); | |
2352 | ||
3ace10f5 KY |
2353 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
2354 | struct sta_info *sta, u8 ac, | |
2355 | u16 tx_airtime, bool tx_completed) | |
2356 | { | |
2357 | int tx_pending; | |
2358 | ||
911bde0f THJ |
2359 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
2360 | return; | |
2361 | ||
3ace10f5 KY |
2362 | if (!tx_completed) { |
2363 | if (sta) | |
2364 | atomic_add(tx_airtime, | |
2365 | &sta->airtime[ac].aql_tx_pending); | |
2366 | ||
2367 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
8e4bac06 | 2368 | atomic_add(tx_airtime, &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2369 | return; |
2370 | } | |
2371 | ||
2372 | if (sta) { | |
2373 | tx_pending = atomic_sub_return(tx_airtime, | |
2374 | &sta->airtime[ac].aql_tx_pending); | |
04e35caa | 2375 | if (tx_pending < 0) |
3ace10f5 KY |
2376 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
2377 | tx_pending, 0); | |
2378 | } | |
2379 | ||
8e4bac06 | 2380 | atomic_sub(tx_airtime, &local->aql_total_pending_airtime); |
3ace10f5 | 2381 | tx_pending = atomic_sub_return(tx_airtime, |
8e4bac06 | 2382 | &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2383 | if (WARN_ONCE(tx_pending < 0, |
2384 | "Device %s AC %d pending airtime underflow: %u, %u", | |
2385 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
8e4bac06 FF |
2386 | tx_airtime)) { |
2387 | atomic_cmpxchg(&local->aql_ac_pending_airtime[ac], | |
3ace10f5 | 2388 | tx_pending, 0); |
8e4bac06 FF |
2389 | atomic_sub(tx_pending, &local->aql_total_pending_airtime); |
2390 | } | |
3ace10f5 KY |
2391 | } |
2392 | ||
c9c5962b JB |
2393 | static struct ieee80211_sta_rx_stats * |
2394 | sta_get_last_rx_stats(struct sta_info *sta) | |
2395 | { | |
046d2e7c | 2396 | struct ieee80211_sta_rx_stats *stats = &sta->deflink.rx_stats; |
c9c5962b JB |
2397 | int cpu; |
2398 | ||
046d2e7c | 2399 | if (!sta->deflink.pcpu_rx_stats) |
c9c5962b JB |
2400 | return stats; |
2401 | ||
2402 | for_each_possible_cpu(cpu) { | |
2403 | struct ieee80211_sta_rx_stats *cpustats; | |
2404 | ||
046d2e7c | 2405 | cpustats = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
c9c5962b JB |
2406 | |
2407 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2408 | stats = cpustats; | |
2409 | } | |
2410 | ||
2411 | return stats; | |
2412 | } | |
2413 | ||
41cbb0f5 | 2414 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2415 | struct rate_info *rinfo) |
fbd6ff5c | 2416 | { |
dcba665b | 2417 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2418 | |
dcba665b | 2419 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2420 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2421 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2422 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2423 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2424 | if (STA_STATS_GET(SGI, rate)) | |
2425 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2426 | break; |
2427 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2428 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2429 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2430 | if (STA_STATS_GET(SGI, rate)) | |
2431 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2432 | break; |
2433 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2434 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2435 | u16 brate; |
4f6b1b3d | 2436 | unsigned int shift; |
dcba665b JB |
2437 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2438 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2439 | |
dcba665b | 2440 | sband = local->hw.wiphy->bands[band]; |
8b783d10 TP |
2441 | |
2442 | if (WARN_ON_ONCE(!sband->bitrates)) | |
2443 | break; | |
2444 | ||
dcba665b | 2445 | brate = sband->bitrates[rate_idx].bitrate; |
4f6b1b3d JB |
2446 | if (rinfo->bw == RATE_INFO_BW_5) |
2447 | shift = 2; | |
2448 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2449 | shift = 1; | |
2450 | else | |
2451 | shift = 0; | |
fbd6ff5c | 2452 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2453 | break; |
2454 | } | |
41cbb0f5 LC |
2455 | case STA_STATS_RATE_TYPE_HE: |
2456 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2457 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2458 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2459 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2460 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2461 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2462 | break; | |
f66c48af JB |
2463 | case STA_STATS_RATE_TYPE_EHT: |
2464 | rinfo->flags = RATE_INFO_FLAGS_EHT_MCS; | |
2465 | rinfo->mcs = STA_STATS_GET(EHT_MCS, rate); | |
2466 | rinfo->nss = STA_STATS_GET(EHT_NSS, rate); | |
2467 | rinfo->eht_gi = STA_STATS_GET(EHT_GI, rate); | |
2468 | rinfo->eht_ru_alloc = STA_STATS_GET(EHT_RU, rate); | |
2469 | break; | |
fbd6ff5c | 2470 | } |
4f6b1b3d JB |
2471 | } |
2472 | ||
a17d93ff | 2473 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2474 | { |
59336e07 | 2475 | u32 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2476 | |
4f6b1b3d | 2477 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2478 | return -EINVAL; |
2479 | ||
2480 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2481 | return 0; | |
fbd6ff5c JB |
2482 | } |
2483 | ||
b255b72b SM |
2484 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
2485 | int tid) | |
2486 | { | |
2487 | unsigned int start; | |
2488 | u64 value; | |
2489 | ||
2490 | do { | |
d120d1a6 | 2491 | start = u64_stats_fetch_begin(&rxstats->syncp); |
b255b72b | 2492 | value = rxstats->msdu[tid]; |
d120d1a6 | 2493 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
b255b72b SM |
2494 | |
2495 | return value; | |
2496 | } | |
2497 | ||
0f9c5a61 JB |
2498 | static void sta_set_tidstats(struct sta_info *sta, |
2499 | struct cfg80211_tid_stats *tidstats, | |
2500 | int tid) | |
2501 | { | |
2502 | struct ieee80211_local *local = sta->local; | |
b255b72b | 2503 | int cpu; |
0f9c5a61 JB |
2504 | |
2505 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
046d2e7c S |
2506 | tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->deflink.rx_stats, |
2507 | tid); | |
0f9c5a61 | 2508 | |
046d2e7c | 2509 | if (sta->deflink.pcpu_rx_stats) { |
b255b72b SM |
2510 | for_each_possible_cpu(cpu) { |
2511 | struct ieee80211_sta_rx_stats *cpurxs; | |
2512 | ||
046d2e7c S |
2513 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2514 | cpu); | |
b255b72b SM |
2515 | tidstats->rx_msdu += |
2516 | sta_get_tidstats_msdu(cpurxs, tid); | |
2517 | } | |
2518 | } | |
0f9c5a61 JB |
2519 | |
2520 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2521 | } | |
2522 | ||
2523 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2524 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
046d2e7c | 2525 | tidstats->tx_msdu = sta->deflink.tx_stats.msdu[tid]; |
0f9c5a61 JB |
2526 | } |
2527 | ||
2528 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2529 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2530 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
046d2e7c | 2531 | tidstats->tx_msdu_retries = sta->deflink.status_stats.msdu_retries[tid]; |
0f9c5a61 JB |
2532 | } |
2533 | ||
2534 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2535 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2536 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
046d2e7c | 2537 | tidstats->tx_msdu_failed = sta->deflink.status_stats.msdu_failed[tid]; |
0f9c5a61 | 2538 | } |
2fe4a29a | 2539 | |
107395f9 | 2540 | if (tid < IEEE80211_NUM_TIDS) { |
2fe4a29a THJ |
2541 | spin_lock_bh(&local->fq.lock); |
2542 | rcu_read_lock(); | |
2543 | ||
2544 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2545 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2546 | to_txq_info(sta->sta.txq[tid])); | |
2547 | ||
2548 | rcu_read_unlock(); | |
2549 | spin_unlock_bh(&local->fq.lock); | |
2550 | } | |
0f9c5a61 JB |
2551 | } |
2552 | ||
c9c5962b JB |
2553 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2554 | { | |
2555 | unsigned int start; | |
2556 | u64 value; | |
2557 | ||
2558 | do { | |
d120d1a6 | 2559 | start = u64_stats_fetch_begin(&rxstats->syncp); |
c9c5962b | 2560 | value = rxstats->bytes; |
d120d1a6 | 2561 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); |
c9c5962b JB |
2562 | |
2563 | return value; | |
2564 | } | |
2565 | ||
0fdf1493 JB |
2566 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2567 | bool tidstats) | |
b7ffbd7e JB |
2568 | { |
2569 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2570 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2571 | u32 thr = 0; |
c9c5962b JB |
2572 | int i, ac, cpu; |
2573 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2574 | ||
2575 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2576 | |
2577 | sinfo->generation = sdata->local->sta_generation; | |
2578 | ||
225b8189 JB |
2579 | /* do before driver, so beacon filtering drivers have a |
2580 | * chance to e.g. just add the number of filtered beacons | |
2581 | * (or just modify the value entirely, of course) | |
2582 | */ | |
2583 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
bfd8403a | 2584 | sinfo->rx_beacon = sdata->deflink.u.mgd.count_beacon_signal; |
225b8189 | 2585 | |
2b9a7e1b | 2586 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
a4217750 OE |
2587 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2588 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2589 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2590 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2591 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2592 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2593 | |
2594 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
bfd8403a JB |
2595 | sinfo->beacon_loss_count = |
2596 | sdata->deflink.u.mgd.beacon_loss_count; | |
a4217750 | 2597 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2598 | } |
b7ffbd7e | 2599 | |
84b00607 | 2600 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2601 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2602 | sinfo->inactive_time = |
b8da6b6a | 2603 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2604 | |
a4217750 OE |
2605 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2606 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2607 | sinfo->tx_bytes = 0; |
2608 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2609 | sinfo->tx_bytes += sta->deflink.tx_stats.bytes[ac]; |
a4217750 | 2610 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2611 | } |
2612 | ||
a4217750 | 2613 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2614 | sinfo->tx_packets = 0; |
2615 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2616 | sinfo->tx_packets += sta->deflink.tx_stats.packets[ac]; |
a4217750 | 2617 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2618 | } |
2619 | ||
a4217750 OE |
2620 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2621 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
046d2e7c | 2622 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->deflink.rx_stats); |
c9c5962b | 2623 | |
046d2e7c | 2624 | if (sta->deflink.pcpu_rx_stats) { |
c9c5962b JB |
2625 | for_each_possible_cpu(cpu) { |
2626 | struct ieee80211_sta_rx_stats *cpurxs; | |
2627 | ||
046d2e7c S |
2628 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2629 | cpu); | |
c9c5962b JB |
2630 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
2631 | } | |
2632 | } | |
0f9c5a61 | 2633 | |
a4217750 | 2634 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2635 | } |
2636 | ||
a4217750 | 2637 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
046d2e7c S |
2638 | sinfo->rx_packets = sta->deflink.rx_stats.packets; |
2639 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2640 | for_each_possible_cpu(cpu) { |
2641 | struct ieee80211_sta_rx_stats *cpurxs; | |
2642 | ||
046d2e7c S |
2643 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2644 | cpu); | |
c9c5962b JB |
2645 | sinfo->rx_packets += cpurxs->packets; |
2646 | } | |
2647 | } | |
a4217750 | 2648 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2649 | } |
2650 | ||
a4217750 | 2651 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
046d2e7c | 2652 | sinfo->tx_retries = sta->deflink.status_stats.retry_count; |
a4217750 | 2653 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2654 | } |
2655 | ||
a4217750 | 2656 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
046d2e7c | 2657 | sinfo->tx_failed = sta->deflink.status_stats.retry_failed; |
a4217750 | 2658 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2659 | } |
2b9a7e1b | 2660 | |
b4809e94 THJ |
2661 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2662 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2663 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2664 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2665 | } | |
2666 | ||
2667 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2668 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2669 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2670 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2671 | } | |
2672 | ||
2673 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
942741da | 2674 | sinfo->airtime_weight = sta->airtime_weight; |
b4809e94 THJ |
2675 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
2676 | } | |
2677 | ||
046d2e7c S |
2678 | sinfo->rx_dropped_misc = sta->deflink.rx_stats.dropped; |
2679 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2680 | for_each_possible_cpu(cpu) { |
2681 | struct ieee80211_sta_rx_stats *cpurxs; | |
2682 | ||
046d2e7c | 2683 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
e165bc02 | 2684 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2685 | } |
2686 | } | |
b7ffbd7e | 2687 | |
225b8189 JB |
2688 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2689 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2690 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2691 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2692 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2693 | } | |
2694 | ||
30686bf7 JB |
2695 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2696 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2697 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2698 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2699 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2700 | } |
2701 | ||
046d2e7c | 2702 | if (!sta->deflink.pcpu_rx_stats && |
a4217750 | 2703 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2704 | sinfo->signal_avg = |
046d2e7c | 2705 | -ewma_signal_read(&sta->deflink.rx_stats_avg.signal); |
a4217750 | 2706 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2707 | } |
b7ffbd7e | 2708 | } |
2b9a7e1b | 2709 | |
c9c5962b JB |
2710 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2711 | * the sta->rx_stats struct, so the check here is fine with and without | |
2712 | * pcpu statistics | |
2713 | */ | |
2714 | if (last_rxstats->chains && | |
a4217750 OE |
2715 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2716 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2717 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
046d2e7c | 2718 | if (!sta->deflink.pcpu_rx_stats) |
a4217750 | 2719 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2720 | |
2721 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2722 | |
b7ffbd7e | 2723 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2724 | sinfo->chain_signal[i] = |
c9c5962b | 2725 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2726 | sinfo->chain_signal_avg[i] = |
046d2e7c | 2727 | -ewma_signal_read(&sta->deflink.rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2728 | } |
2729 | } | |
2730 | ||
8a263dcb | 2731 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) && |
3e99b4d2 SD |
2732 | !sta->sta.valid_links && |
2733 | ieee80211_rate_valid(&sta->deflink.tx_stats.last_rate)) { | |
046d2e7c | 2734 | sta_set_rate_info_tx(sta, &sta->deflink.tx_stats.last_rate, |
e5a9f8d0 | 2735 | &sinfo->txrate); |
a4217750 | 2736 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2737 | } |
2738 | ||
8a263dcb JB |
2739 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) && |
2740 | !sta->sta.valid_links) { | |
a17d93ff | 2741 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2742 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2743 | } |
b7ffbd7e | 2744 | |
0fdf1493 | 2745 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2746 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2747 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2748 | } |
2749 | ||
b7ffbd7e JB |
2750 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2751 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2752 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2753 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2754 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2755 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2756 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a | 2757 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
1303a51c MT |
2758 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
2759 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); | |
b7ffbd7e | 2760 | |
433f5bc1 JB |
2761 | sinfo->llid = sta->mesh->llid; |
2762 | sinfo->plid = sta->mesh->plid; | |
2763 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2764 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2765 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2766 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2767 | } |
433f5bc1 JB |
2768 | sinfo->local_pm = sta->mesh->local_pm; |
2769 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2770 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2771 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
1303a51c | 2772 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
b7ffbd7e JB |
2773 | #endif |
2774 | } | |
2775 | ||
2776 | sinfo->bss_param.flags = 0; | |
2777 | if (sdata->vif.bss_conf.use_cts_prot) | |
2778 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2779 | if (sdata->vif.bss_conf.use_short_preamble) | |
2780 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2781 | if (sdata->vif.bss_conf.use_short_slot) | |
2782 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2783 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2784 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2785 | ||
2786 | sinfo->sta_flags.set = 0; | |
2787 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2788 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2789 | BIT(NL80211_STA_FLAG_WME) | | |
2790 | BIT(NL80211_STA_FLAG_MFP) | | |
2791 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2792 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2793 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2794 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2795 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2796 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2797 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2798 | if (sta->sta.wme) |
b7ffbd7e JB |
2799 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2800 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2801 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2802 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2803 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2804 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2805 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2806 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2807 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2808 | ||
3b17fbf8 MA |
2809 | thr = sta_get_expected_throughput(sta); |
2810 | ||
2811 | if (thr != 0) { | |
a4217750 | 2812 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2813 | sinfo->expected_throughput = thr; |
2814 | } | |
a78b26ff VN |
2815 | |
2816 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
046d2e7c S |
2817 | sta->deflink.status_stats.ack_signal_filled) { |
2818 | sinfo->ack_signal = sta->deflink.status_stats.last_ack_signal; | |
a78b26ff VN |
2819 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
2820 | } | |
cc60dbbf | 2821 | |
9c06602b | 2822 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
046d2e7c | 2823 | sta->deflink.status_stats.ack_signal_filled) { |
cc60dbbf BP |
2824 | sinfo->avg_ack_signal = |
2825 | -(s8)ewma_avg_signal_read( | |
046d2e7c | 2826 | &sta->deflink.status_stats.avg_ack_signal); |
cc60dbbf | 2827 | sinfo->filled |= |
9c06602b | 2828 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2829 | } |
ab60633c NM |
2830 | |
2831 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2832 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2833 | sinfo->airtime_link_metric = | |
2834 | airtime_link_metric_get(local, sta); | |
2835 | } | |
3b17fbf8 MA |
2836 | } |
2837 | ||
2838 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2839 | { | |
2840 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2841 | struct ieee80211_local *local = sdata->local; | |
2842 | struct rate_control_ref *ref = NULL; | |
2843 | u32 thr = 0; | |
2844 | ||
2845 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2846 | ref = local->rate_ctrl; | |
2847 | ||
b7ffbd7e JB |
2848 | /* check if the driver has a SW RC implementation */ |
2849 | if (ref && ref->ops->get_expected_throughput) | |
2850 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2851 | else | |
4fdbc67a | 2852 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2853 | |
3b17fbf8 | 2854 | return thr; |
b7ffbd7e | 2855 | } |
b8da6b6a JB |
2856 | |
2857 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2858 | { | |
c9c5962b JB |
2859 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2860 | ||
046d2e7c S |
2861 | if (!sta->deflink.status_stats.last_ack || |
2862 | time_after(stats->last_rx, sta->deflink.status_stats.last_ack)) | |
c9c5962b | 2863 | return stats->last_rx; |
046d2e7c | 2864 | return sta->deflink.status_stats.last_ack; |
b8da6b6a | 2865 | } |
484a54c2 THJ |
2866 | |
2867 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2868 | { | |
484a54c2 THJ |
2869 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { |
2870 | sta->cparams.target = MS2TIME(50); | |
2871 | sta->cparams.interval = MS2TIME(300); | |
2872 | sta->cparams.ecn = false; | |
2873 | } else { | |
2874 | sta->cparams.target = MS2TIME(20); | |
2875 | sta->cparams.interval = MS2TIME(100); | |
2876 | sta->cparams.ecn = true; | |
2877 | } | |
2878 | } | |
2879 | ||
2880 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2881 | u32 thr) | |
2882 | { | |
2883 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2884 | ||
2885 | sta_update_codel_params(sta, thr); | |
2886 | } | |
cb71f1d1 JB |
2887 | |
2888 | int ieee80211_sta_allocate_link(struct sta_info *sta, unsigned int link_id) | |
2889 | { | |
2890 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2891 | struct sta_link_alloc *alloc; | |
2892 | int ret; | |
2893 | ||
4d3acf43 | 2894 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
cb71f1d1 | 2895 | |
79aa3a09 BB |
2896 | WARN_ON(!test_sta_flag(sta, WLAN_STA_INSERTED)); |
2897 | ||
cb71f1d1 JB |
2898 | /* must represent an MLD from the start */ |
2899 | if (WARN_ON(!sta->sta.valid_links)) | |
2900 | return -EINVAL; | |
2901 | ||
2902 | if (WARN_ON(sta->sta.valid_links & BIT(link_id) || | |
2903 | sta->link[link_id])) | |
2904 | return -EBUSY; | |
2905 | ||
2906 | alloc = kzalloc(sizeof(*alloc), GFP_KERNEL); | |
2907 | if (!alloc) | |
2908 | return -ENOMEM; | |
2909 | ||
2910 | ret = sta_info_alloc_link(sdata->local, &alloc->info, GFP_KERNEL); | |
2911 | if (ret) { | |
2912 | kfree(alloc); | |
2913 | return ret; | |
2914 | } | |
2915 | ||
2916 | sta_info_add_link(sta, link_id, &alloc->info, &alloc->sta); | |
2917 | ||
d2caad52 BB |
2918 | ieee80211_link_sta_debugfs_add(&alloc->info); |
2919 | ||
cb71f1d1 JB |
2920 | return 0; |
2921 | } | |
2922 | ||
21476ad1 ST |
2923 | void ieee80211_sta_free_link(struct sta_info *sta, unsigned int link_id) |
2924 | { | |
4d3acf43 | 2925 | lockdep_assert_wiphy(sta->sdata->local->hw.wiphy); |
21476ad1 | 2926 | |
79aa3a09 BB |
2927 | WARN_ON(!test_sta_flag(sta, WLAN_STA_INSERTED)); |
2928 | ||
21476ad1 ST |
2929 | sta_remove_link(sta, link_id, false); |
2930 | } | |
2931 | ||
cb71f1d1 JB |
2932 | int ieee80211_sta_activate_link(struct sta_info *sta, unsigned int link_id) |
2933 | { | |
2934 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
c71420db | 2935 | struct link_sta_info *link_sta; |
cb71f1d1 JB |
2936 | u16 old_links = sta->sta.valid_links; |
2937 | u16 new_links = old_links | BIT(link_id); | |
2938 | int ret; | |
2939 | ||
c71420db | 2940 | link_sta = rcu_dereference_protected(sta->link[link_id], |
4d3acf43 | 2941 | lockdep_is_held(&sdata->local->hw.wiphy->mtx)); |
cb71f1d1 | 2942 | |
c71420db | 2943 | if (WARN_ON(old_links == new_links || !link_sta)) |
cb71f1d1 JB |
2944 | return -EINVAL; |
2945 | ||
177577db JB |
2946 | rcu_read_lock(); |
2947 | if (link_sta_info_hash_lookup(sdata->local, link_sta->addr)) { | |
2948 | rcu_read_unlock(); | |
2949 | return -EALREADY; | |
2950 | } | |
2951 | /* we only modify under the mutex so this is fine */ | |
2952 | rcu_read_unlock(); | |
2953 | ||
cb71f1d1 JB |
2954 | sta->sta.valid_links = new_links; |
2955 | ||
79aa3a09 | 2956 | if (WARN_ON(!test_sta_flag(sta, WLAN_STA_INSERTED))) |
ba6ddab9 | 2957 | goto hash; |
cb71f1d1 | 2958 | |
ba7af265 JB |
2959 | ieee80211_recalc_min_chandef(sdata, link_id); |
2960 | ||
4c51541d BB |
2961 | /* Ensure the values are updated for the driver, |
2962 | * redone by sta_remove_link on failure. | |
2963 | */ | |
2964 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
2965 | ||
cb71f1d1 JB |
2966 | ret = drv_change_sta_links(sdata->local, sdata, &sta->sta, |
2967 | old_links, new_links); | |
2968 | if (ret) { | |
2969 | sta->sta.valid_links = old_links; | |
ba6ddab9 | 2970 | sta_remove_link(sta, link_id, false); |
177577db | 2971 | return ret; |
cb71f1d1 JB |
2972 | } |
2973 | ||
ba6ddab9 | 2974 | hash: |
177577db JB |
2975 | ret = link_sta_info_hash_add(sdata->local, link_sta); |
2976 | WARN_ON(ret); | |
2977 | return 0; | |
cb71f1d1 JB |
2978 | } |
2979 | ||
2980 | void ieee80211_sta_remove_link(struct sta_info *sta, unsigned int link_id) | |
2981 | { | |
2982 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
a8f62399 | 2983 | u16 old_links = sta->sta.valid_links; |
cb71f1d1 | 2984 | |
4d3acf43 | 2985 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
cb71f1d1 JB |
2986 | |
2987 | sta->sta.valid_links &= ~BIT(link_id); | |
2988 | ||
79aa3a09 | 2989 | if (!WARN_ON(!test_sta_flag(sta, WLAN_STA_INSERTED))) |
cb71f1d1 | 2990 | drv_change_sta_links(sdata->local, sdata, &sta->sta, |
a8f62399 | 2991 | old_links, sta->sta.valid_links); |
cb71f1d1 | 2992 | |
ba6ddab9 | 2993 | sta_remove_link(sta, link_id, true); |
cb71f1d1 | 2994 | } |
175ad2ec JB |
2995 | |
2996 | void ieee80211_sta_set_max_amsdu_subframes(struct sta_info *sta, | |
2997 | const u8 *ext_capab, | |
2998 | unsigned int ext_capab_len) | |
2999 | { | |
3000 | u8 val; | |
3001 | ||
3002 | sta->sta.max_amsdu_subframes = 0; | |
3003 | ||
3004 | if (ext_capab_len < 8) | |
3005 | return; | |
3006 | ||
3007 | /* The sender might not have sent the last bit, consider it to be 0 */ | |
3008 | val = u8_get_bits(ext_capab[7], WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB); | |
3009 | ||
3010 | /* we did get all the bits, take the MSB as well */ | |
3011 | if (ext_capab_len >= 9) | |
3012 | val |= u8_get_bits(ext_capab[8], | |
3013 | WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB) << 1; | |
3014 | ||
3015 | if (val) | |
428e8976 | 3016 | sta->sta.max_amsdu_subframes = 4 << (4 - val); |
175ad2ec | 3017 | } |
65fd846c JB |
3018 | |
3019 | #ifdef CONFIG_LOCKDEP | |
3020 | bool lockdep_sta_mutex_held(struct ieee80211_sta *pubsta) | |
3021 | { | |
3022 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
3023 | ||
4d3acf43 | 3024 | return lockdep_is_held(&sta->local->hw.wiphy->mtx); |
65fd846c JB |
3025 | } |
3026 | EXPORT_SYMBOL(lockdep_sta_mutex_held); | |
3027 | #endif |