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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 |
3a11ce08 | 7 | * Copyright (C) 2018-2021 Intel Corporation |
f0706e82 JB |
8 | */ |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/init.h> | |
888d04df | 12 | #include <linux/etherdevice.h> |
f0706e82 JB |
13 | #include <linux/netdevice.h> |
14 | #include <linux/types.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/skbuff.h> | |
17 | #include <linux/if_arp.h> | |
0d174406 | 18 | #include <linux/timer.h> |
d0709a65 | 19 | #include <linux/rtnetlink.h> |
f0706e82 | 20 | |
484a54c2 | 21 | #include <net/codel.h> |
f0706e82 JB |
22 | #include <net/mac80211.h> |
23 | #include "ieee80211_i.h" | |
24487981 | 24 | #include "driver-ops.h" |
2c8dccc7 | 25 | #include "rate.h" |
f0706e82 | 26 | #include "sta_info.h" |
e9f207f0 | 27 | #include "debugfs_sta.h" |
ee385855 | 28 | #include "mesh.h" |
ce662b44 | 29 | #include "wme.h" |
f0706e82 | 30 | |
d0709a65 JB |
31 | /** |
32 | * DOC: STA information lifetime rules | |
33 | * | |
34 | * STA info structures (&struct sta_info) are managed in a hash table | |
35 | * for faster lookup and a list for iteration. They are managed using | |
36 | * RCU, i.e. access to the list and hash table is protected by RCU. | |
37 | * | |
34e89507 JB |
38 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
39 | * owns that structure. It must then insert it into the hash table using | |
40 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter | |
41 | * case (which acquires an rcu read section but must not be called from | |
42 | * within one) will the pointer still be valid after the call. Note that | |
43 | * the caller may not do much with the STA info before inserting it, in | |
44 | * particular, it may not start any mesh peer link management or add | |
45 | * encryption keys. | |
93e5deb1 JB |
46 | * |
47 | * When the insertion fails (sta_info_insert()) returns non-zero), the | |
48 | * structure will have been freed by sta_info_insert()! | |
d0709a65 | 49 | * |
34e89507 | 50 | * Station entries are added by mac80211 when you establish a link with a |
7e189a12 LR |
51 | * peer. This means different things for the different type of interfaces |
52 | * we support. For a regular station this mean we add the AP sta when we | |
25985edc | 53 | * receive an association response from the AP. For IBSS this occurs when |
34e89507 | 54 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
25985edc | 55 | * the peer immediately upon device open. When using AP mode we add stations |
34e89507 | 56 | * for each respective station upon request from userspace through nl80211. |
7e189a12 | 57 | * |
34e89507 JB |
58 | * In order to remove a STA info structure, various sta_info_destroy_*() |
59 | * calls are available. | |
d0709a65 | 60 | * |
34e89507 JB |
61 | * There is no concept of ownership on a STA entry, each structure is |
62 | * owned by the global hash table/list until it is removed. All users of | |
63 | * the structure need to be RCU protected so that the structure won't be | |
64 | * freed before they are done using it. | |
d0709a65 | 65 | */ |
f0706e82 | 66 | |
cb71f1d1 JB |
67 | struct sta_link_alloc { |
68 | struct link_sta_info info; | |
69 | struct ieee80211_link_sta sta; | |
c71420db | 70 | struct rcu_head rcu_head; |
cb71f1d1 JB |
71 | }; |
72 | ||
7bedd0cf JB |
73 | static const struct rhashtable_params sta_rht_params = { |
74 | .nelem_hint = 3, /* start small */ | |
caf22d31 | 75 | .automatic_shrinking = true, |
7bedd0cf | 76 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 77 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf | 78 | .key_len = ETH_ALEN, |
ebd82b39 | 79 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
7bedd0cf JB |
80 | }; |
81 | ||
ba6ddab9 JB |
82 | static const struct rhashtable_params link_sta_rht_params = { |
83 | .nelem_hint = 3, /* start small */ | |
84 | .automatic_shrinking = true, | |
85 | .head_offset = offsetof(struct link_sta_info, link_hash_node), | |
86 | .key_offset = offsetof(struct link_sta_info, addr), | |
87 | .key_len = ETH_ALEN, | |
88 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, | |
89 | }; | |
90 | ||
4d33960b | 91 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
92 | static int sta_info_hash_del(struct ieee80211_local *local, |
93 | struct sta_info *sta) | |
f0706e82 | 94 | { |
83e7e4ce HX |
95 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
96 | sta_rht_params); | |
f0706e82 JB |
97 | } |
98 | ||
f36fe0a2 JB |
99 | static int link_sta_info_hash_add(struct ieee80211_local *local, |
100 | struct link_sta_info *link_sta) | |
101 | { | |
177577db | 102 | lockdep_assert_held(&local->sta_mtx); |
f36fe0a2 JB |
103 | return rhltable_insert(&local->link_sta_hash, |
104 | &link_sta->link_hash_node, | |
105 | link_sta_rht_params); | |
106 | } | |
107 | ||
ba6ddab9 JB |
108 | static int link_sta_info_hash_del(struct ieee80211_local *local, |
109 | struct link_sta_info *link_sta) | |
110 | { | |
177577db | 111 | lockdep_assert_held(&local->sta_mtx); |
ba6ddab9 JB |
112 | return rhltable_remove(&local->link_sta_hash, |
113 | &link_sta->link_hash_node, | |
114 | link_sta_rht_params); | |
115 | } | |
116 | ||
5108ca82 | 117 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 118 | { |
b22cfcfc EP |
119 | int ac, i; |
120 | struct tid_ampdu_tx *tid_tx; | |
121 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
122 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 123 | struct ps_data *ps; |
b22cfcfc | 124 | |
e3685e03 | 125 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
126 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
127 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
128 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
129 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
130 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
131 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
132 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
133 | else |
134 | return; | |
b22cfcfc EP |
135 | |
136 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 137 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 138 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 139 | |
d012a605 | 140 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
141 | } |
142 | ||
ba8c3d6f FF |
143 | if (sta->sta.txq[0]) { |
144 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
adf8ed01 JB |
145 | struct txq_info *txqi; |
146 | ||
147 | if (!sta->sta.txq[i]) | |
148 | continue; | |
149 | ||
150 | txqi = to_txq_info(sta->sta.txq[i]); | |
ba8c3d6f | 151 | |
fa962b92 | 152 | ieee80211_txq_purge(local, txqi); |
ba8c3d6f FF |
153 | } |
154 | } | |
155 | ||
b22cfcfc EP |
156 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
157 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
158 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
159 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
160 | } |
161 | ||
45b5028e TP |
162 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
163 | mesh_sta_cleanup(sta); | |
b22cfcfc | 164 | |
5ac2e350 | 165 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
166 | |
167 | /* | |
168 | * Destroy aggregation state here. It would be nice to wait for the | |
169 | * driver to finish aggregation stop and then clean up, but for now | |
170 | * drivers have to handle aggregation stop being requested, followed | |
171 | * directly by station destruction. | |
172 | */ | |
5a306f58 | 173 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 174 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
175 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
176 | if (!tid_tx) | |
177 | continue; | |
1f98ab7f | 178 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
179 | kfree(tid_tx); |
180 | } | |
5108ca82 | 181 | } |
b22cfcfc | 182 | |
5108ca82 JB |
183 | static void cleanup_single_sta(struct sta_info *sta) |
184 | { | |
185 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
186 | struct ieee80211_local *local = sdata->local; | |
187 | ||
188 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
189 | sta_info_free(local, sta); |
190 | } | |
191 | ||
83e7e4ce HX |
192 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
193 | const u8 *addr) | |
194 | { | |
195 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
196 | } | |
197 | ||
d0709a65 | 198 | /* protected by RCU */ |
abe60632 JB |
199 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
200 | const u8 *addr) | |
f0706e82 | 201 | { |
abe60632 | 202 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 203 | struct rhlist_head *tmp; |
60f4b626 | 204 | struct sta_info *sta; |
f0706e82 | 205 | |
60f4b626 | 206 | rcu_read_lock(); |
83e7e4ce | 207 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
208 | if (sta->sdata == sdata) { |
209 | rcu_read_unlock(); | |
210 | /* this is safe as the caller must already hold | |
211 | * another rcu read section or the mutex | |
212 | */ | |
213 | return sta; | |
214 | } | |
215 | } | |
216 | rcu_read_unlock(); | |
217 | return NULL; | |
43ba7e95 JB |
218 | } |
219 | ||
0e5ded5a FF |
220 | /* |
221 | * Get sta info either from the specified interface | |
222 | * or from one of its vlans | |
223 | */ | |
224 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
225 | const u8 *addr) | |
226 | { | |
227 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 228 | struct rhlist_head *tmp; |
0e5ded5a FF |
229 | struct sta_info *sta; |
230 | ||
7bedd0cf | 231 | rcu_read_lock(); |
83e7e4ce | 232 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
233 | if (sta->sdata == sdata || |
234 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
235 | rcu_read_unlock(); | |
236 | /* this is safe as the caller must already hold | |
237 | * another rcu read section or the mutex | |
238 | */ | |
239 | return sta; | |
240 | } | |
0e5ded5a | 241 | } |
7bedd0cf JB |
242 | rcu_read_unlock(); |
243 | return NULL; | |
0e5ded5a FF |
244 | } |
245 | ||
ba6ddab9 JB |
246 | struct rhlist_head *link_sta_info_hash_lookup(struct ieee80211_local *local, |
247 | const u8 *addr) | |
248 | { | |
249 | return rhltable_lookup(&local->link_sta_hash, addr, | |
250 | link_sta_rht_params); | |
251 | } | |
252 | ||
253 | struct link_sta_info * | |
254 | link_sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr) | |
255 | { | |
256 | struct ieee80211_local *local = sdata->local; | |
257 | struct rhlist_head *tmp; | |
258 | struct link_sta_info *link_sta; | |
259 | ||
260 | rcu_read_lock(); | |
261 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
262 | struct sta_info *sta = link_sta->sta; | |
263 | ||
264 | if (sta->sdata == sdata || | |
265 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
266 | rcu_read_unlock(); | |
267 | /* this is safe as the caller must already hold | |
268 | * another rcu read section or the mutex | |
269 | */ | |
270 | return link_sta; | |
271 | } | |
272 | } | |
273 | rcu_read_unlock(); | |
274 | return NULL; | |
275 | } | |
276 | ||
ffa9598e JB |
277 | struct ieee80211_sta * |
278 | ieee80211_find_sta_by_link_addrs(struct ieee80211_hw *hw, | |
279 | const u8 *addr, | |
280 | const u8 *localaddr, | |
281 | unsigned int *link_id) | |
282 | { | |
283 | struct ieee80211_local *local = hw_to_local(hw); | |
284 | struct link_sta_info *link_sta; | |
285 | struct rhlist_head *tmp; | |
286 | ||
287 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
288 | struct sta_info *sta = link_sta->sta; | |
289 | struct ieee80211_link_data *link; | |
290 | u8 _link_id = link_sta->link_id; | |
291 | ||
292 | if (!localaddr) { | |
293 | if (link_id) | |
294 | *link_id = _link_id; | |
295 | return &sta->sta; | |
296 | } | |
297 | ||
298 | link = rcu_dereference(sta->sdata->link[_link_id]); | |
299 | if (!link) | |
300 | continue; | |
301 | ||
302 | if (memcmp(link->conf->addr, localaddr, ETH_ALEN)) | |
303 | continue; | |
304 | ||
305 | if (link_id) | |
306 | *link_id = _link_id; | |
307 | return &sta->sta; | |
308 | } | |
309 | ||
310 | return NULL; | |
311 | } | |
312 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_link_addrs); | |
313 | ||
5072f73c THJ |
314 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
315 | const u8 *sta_addr, const u8 *vif_addr) | |
316 | { | |
317 | struct rhlist_head *tmp; | |
318 | struct sta_info *sta; | |
319 | ||
320 | for_each_sta_info(local, sta_addr, sta, tmp) { | |
321 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) | |
322 | return sta; | |
323 | } | |
324 | ||
325 | return NULL; | |
326 | } | |
327 | ||
3b53fde8 JB |
328 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
329 | int idx) | |
ee385855 | 330 | { |
3b53fde8 | 331 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
332 | struct sta_info *sta; |
333 | int i = 0; | |
334 | ||
8ca47eb9 MB |
335 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
336 | lockdep_is_held(&local->sta_mtx)) { | |
3b53fde8 | 337 | if (sdata != sta->sdata) |
2a8ca29a | 338 | continue; |
ee385855 LCC |
339 | if (i < idx) { |
340 | ++i; | |
341 | continue; | |
ee385855 | 342 | } |
2a8ca29a | 343 | return sta; |
ee385855 | 344 | } |
ee385855 LCC |
345 | |
346 | return NULL; | |
347 | } | |
f0706e82 | 348 | |
cb71f1d1 | 349 | static void sta_info_free_link(struct link_sta_info *link_sta) |
246b39e4 | 350 | { |
cb71f1d1 JB |
351 | free_percpu(link_sta->pcpu_rx_stats); |
352 | } | |
246b39e4 | 353 | |
ba6ddab9 JB |
354 | static void sta_remove_link(struct sta_info *sta, unsigned int link_id, |
355 | bool unhash) | |
cb71f1d1 JB |
356 | { |
357 | struct sta_link_alloc *alloc = NULL; | |
c71420db | 358 | struct link_sta_info *link_sta; |
246b39e4 | 359 | |
c71420db JB |
360 | link_sta = rcu_dereference_protected(sta->link[link_id], |
361 | lockdep_is_held(&sta->local->sta_mtx)); | |
362 | ||
363 | if (WARN_ON(!link_sta)) | |
cb71f1d1 JB |
364 | return; |
365 | ||
ba6ddab9 JB |
366 | if (unhash) |
367 | link_sta_info_hash_del(sta->local, link_sta); | |
368 | ||
c71420db JB |
369 | if (link_sta != &sta->deflink) |
370 | alloc = container_of(link_sta, typeof(*alloc), info); | |
cb71f1d1 JB |
371 | |
372 | sta->sta.valid_links &= ~BIT(link_id); | |
c71420db JB |
373 | RCU_INIT_POINTER(sta->link[link_id], NULL); |
374 | RCU_INIT_POINTER(sta->sta.link[link_id], NULL); | |
cb71f1d1 JB |
375 | if (alloc) { |
376 | sta_info_free_link(&alloc->info); | |
c71420db | 377 | kfree_rcu(alloc, rcu_head); |
246b39e4 | 378 | } |
4c51541d BB |
379 | |
380 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
246b39e4 JB |
381 | } |
382 | ||
93e5deb1 | 383 | /** |
d9a7ddb0 | 384 | * sta_info_free - free STA |
93e5deb1 | 385 | * |
6ef307bc | 386 | * @local: pointer to the global information |
93e5deb1 JB |
387 | * @sta: STA info to free |
388 | * | |
389 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
390 | * that may happen before sta_info_insert(). It may only be |
391 | * called when sta_info_insert() has not been attempted (and | |
392 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 393 | */ |
d9a7ddb0 | 394 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 395 | { |
cb71f1d1 JB |
396 | int i; |
397 | ||
398 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
399 | if (!(sta->sta.valid_links & BIT(i))) | |
400 | continue; | |
401 | ||
0ad49045 | 402 | sta_remove_link(sta, i, false); |
cb71f1d1 JB |
403 | } |
404 | ||
dcd479e1 JB |
405 | /* |
406 | * If we had used sta_info_pre_move_state() then we might not | |
407 | * have gone through the state transitions down again, so do | |
408 | * it here now (and warn if it's inserted). | |
409 | * | |
410 | * This will clear state such as fast TX/RX that may have been | |
411 | * allocated during state transitions. | |
412 | */ | |
413 | while (sta->sta_state > IEEE80211_STA_NONE) { | |
414 | int ret; | |
415 | ||
416 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
417 | ||
418 | ret = sta_info_move_state(sta, sta->sta_state - 1); | |
419 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) | |
420 | break; | |
421 | } | |
422 | ||
889cbb91 | 423 | if (sta->rate_ctrl) |
af65cd96 | 424 | rate_control_free_sta(sta); |
93e5deb1 | 425 | |
bdcbd8e0 | 426 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 427 | |
ba8c3d6f FF |
428 | if (sta->sta.txq[0]) |
429 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 430 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
431 | #ifdef CONFIG_MAC80211_MESH |
432 | kfree(sta->mesh); | |
433 | #endif | |
246b39e4 | 434 | |
cb71f1d1 | 435 | sta_info_free_link(&sta->deflink); |
93e5deb1 JB |
436 | kfree(sta); |
437 | } | |
438 | ||
4d33960b | 439 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
440 | static int sta_info_hash_add(struct ieee80211_local *local, |
441 | struct sta_info *sta) | |
f0706e82 | 442 | { |
83e7e4ce HX |
443 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
444 | sta_rht_params); | |
f0706e82 | 445 | } |
f0706e82 | 446 | |
5ac2e350 | 447 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
448 | { |
449 | struct sta_info *sta; | |
450 | ||
5ac2e350 | 451 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
452 | |
453 | if (sta->dead) | |
454 | return; | |
455 | ||
5ac2e350 JB |
456 | local_bh_disable(); |
457 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 458 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 459 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 460 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 461 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 462 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 463 | local_bh_enable(); |
af818581 JB |
464 | } |
465 | ||
af65cd96 JB |
466 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
467 | struct sta_info *sta, gfp_t gfp) | |
468 | { | |
30686bf7 | 469 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
470 | return 0; |
471 | ||
889cbb91 | 472 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 473 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 474 | sta, gfp); |
889cbb91 | 475 | if (!sta->rate_ctrl_priv) |
af65cd96 | 476 | return -ENOMEM; |
af65cd96 JB |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
cb71f1d1 JB |
481 | static int sta_info_alloc_link(struct ieee80211_local *local, |
482 | struct link_sta_info *link_info, | |
483 | gfp_t gfp) | |
246b39e4 | 484 | { |
246b39e4 JB |
485 | struct ieee80211_hw *hw = &local->hw; |
486 | int i; | |
487 | ||
246b39e4 JB |
488 | if (ieee80211_hw_check(hw, USES_RSS)) { |
489 | link_info->pcpu_rx_stats = | |
490 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); | |
491 | if (!link_info->pcpu_rx_stats) | |
492 | return -ENOMEM; | |
493 | } | |
494 | ||
246b39e4 JB |
495 | link_info->rx_stats.last_rx = jiffies; |
496 | u64_stats_init(&link_info->rx_stats.syncp); | |
497 | ||
498 | ewma_signal_init(&link_info->rx_stats_avg.signal); | |
499 | ewma_avg_signal_init(&link_info->status_stats.avg_ack_signal); | |
500 | for (i = 0; i < ARRAY_SIZE(link_info->rx_stats_avg.chain_signal); i++) | |
501 | ewma_signal_init(&link_info->rx_stats_avg.chain_signal[i]); | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
cb71f1d1 JB |
506 | static void sta_info_add_link(struct sta_info *sta, |
507 | unsigned int link_id, | |
508 | struct link_sta_info *link_info, | |
509 | struct ieee80211_link_sta *link_sta) | |
510 | { | |
511 | link_info->sta = sta; | |
512 | link_info->link_id = link_id; | |
c71420db | 513 | link_info->pub = link_sta; |
c73993b8 | 514 | link_sta->link_id = link_id; |
c71420db JB |
515 | rcu_assign_pointer(sta->link[link_id], link_info); |
516 | rcu_assign_pointer(sta->sta.link[link_id], link_sta); | |
261ce887 BB |
517 | |
518 | link_sta->smps_mode = IEEE80211_SMPS_OFF; | |
4c51541d | 519 | link_sta->agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
cb71f1d1 JB |
520 | } |
521 | ||
f36fe0a2 JB |
522 | static struct sta_info * |
523 | __sta_info_alloc(struct ieee80211_sub_if_data *sdata, | |
524 | const u8 *addr, int link_id, const u8 *link_addr, | |
525 | gfp_t gfp) | |
f0706e82 | 526 | { |
d0709a65 | 527 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 528 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 529 | struct sta_info *sta; |
16c5f15c | 530 | int i; |
f0706e82 | 531 | |
ba8c3d6f | 532 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 533 | if (!sta) |
73651ee6 | 534 | return NULL; |
f0706e82 | 535 | |
246b39e4 JB |
536 | sta->local = local; |
537 | sta->sdata = sdata; | |
538 | ||
cb71f1d1 | 539 | if (sta_info_alloc_link(local, &sta->deflink, gfp)) |
36fe8e4e | 540 | goto free; |
c9c5962b | 541 | |
cb71f1d1 JB |
542 | if (link_id >= 0) { |
543 | sta_info_add_link(sta, link_id, &sta->deflink, | |
544 | &sta->sta.deflink); | |
545 | sta->sta.valid_links = BIT(link_id); | |
546 | } else { | |
547 | sta_info_add_link(sta, 0, &sta->deflink, &sta->sta.deflink); | |
548 | } | |
549 | ||
4c51541d BB |
550 | sta->sta.cur = &sta->sta.deflink.agg; |
551 | ||
07346f81 | 552 | spin_lock_init(&sta->lock); |
1d147bfa | 553 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 554 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 555 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 556 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 557 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
558 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
559 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
560 | if (!sta->mesh) | |
561 | goto free; | |
4c02d62f | 562 | sta->mesh->plink_sta = sta; |
433f5bc1 | 563 | spin_lock_init(&sta->mesh->plink_lock); |
45d33746 | 564 | if (!sdata->u.mesh.user_mpm) |
4c02d62f KC |
565 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
566 | 0); | |
433f5bc1 JB |
567 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
568 | } | |
87f59c70 | 569 | #endif |
07346f81 | 570 | |
ac100ce5 | 571 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 572 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
f36fe0a2 JB |
573 | memcpy(sta->deflink.addr, link_addr, ETH_ALEN); |
574 | memcpy(sta->sta.deflink.addr, link_addr, ETH_ALEN); | |
480dd46b MA |
575 | sta->sta.max_rx_aggregation_subframes = |
576 | local->hw.max_rx_aggregation_subframes; | |
577 | ||
046d2e7c S |
578 | /* TODO link specific alloc and assignments for MLO Link STA */ |
579 | ||
96fc6efb AW |
580 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
581 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
582 | * references to is not NULL. To not use the initial Rx-only key | |
583 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
584 | * which always will refer to a NULL key. | |
585 | */ | |
586 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
587 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
588 | ||
0f9c5a61 | 589 | |
3a11ce08 JB |
590 | ieee80211_init_frag_cache(&sta->frags); |
591 | ||
71ec375c JB |
592 | sta->sta_state = IEEE80211_STA_NONE; |
593 | ||
b6da911b LK |
594 | /* Mark TID as unreserved */ |
595 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
596 | ||
84b00607 | 597 | sta->last_connected = ktime_get_seconds(); |
541a45a1 | 598 | |
ba8c3d6f FF |
599 | if (local->ops->wake_tx_queue) { |
600 | void *txq_data; | |
601 | int size = sizeof(struct txq_info) + | |
602 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
603 | ||
604 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
605 | if (!txq_data) | |
606 | goto free; | |
607 | ||
608 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
609 | struct txq_info *txq = txq_data + i * size; | |
610 | ||
adf8ed01 | 611 | /* might not do anything for the bufferable MMPDU TXQ */ |
fa962b92 | 612 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 613 | } |
abfbc3af | 614 | } |
f0706e82 | 615 | |
ba8c3d6f FF |
616 | if (sta_prepare_rate_control(local, sta, gfp)) |
617 | goto free_txq; | |
618 | ||
942741da | 619 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
b4809e94 | 620 | |
948d887d JB |
621 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
622 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
623 | skb_queue_head_init(&sta->tx_filtered[i]); | |
942741da FF |
624 | sta->airtime[i].deficit = sta->airtime_weight; |
625 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); | |
626 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; | |
627 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; | |
948d887d | 628 | } |
73651ee6 | 629 | |
5a306f58 | 630 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 631 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 632 | |
bd718fc1 JB |
633 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
634 | u32 mandatory = 0; | |
635 | int r; | |
636 | ||
637 | if (!hw->wiphy->bands[i]) | |
638 | continue; | |
639 | ||
640 | switch (i) { | |
641 | case NL80211_BAND_2GHZ: | |
63fa0426 | 642 | case NL80211_BAND_LC: |
bd718fc1 JB |
643 | /* |
644 | * We use both here, even if we cannot really know for | |
645 | * sure the station will support both, but the only use | |
646 | * for this is when we don't know anything yet and send | |
647 | * management frames, and then we'll pick the lowest | |
648 | * possible rate anyway. | |
649 | * If we don't include _G here, we cannot find a rate | |
650 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
651 | */ | |
652 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
653 | IEEE80211_RATE_MANDATORY_G; | |
654 | break; | |
655 | case NL80211_BAND_5GHZ: | |
656 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
657 | break; | |
658 | case NL80211_BAND_60GHZ: | |
659 | WARN_ON(1); | |
660 | mandatory = 0; | |
661 | break; | |
662 | } | |
663 | ||
664 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
665 | struct ieee80211_rate *rate; | |
666 | ||
667 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
668 | ||
669 | if (!(rate->flags & mandatory)) | |
670 | continue; | |
046d2e7c | 671 | sta->sta.deflink.supp_rates[i] |= BIT(r); |
bd718fc1 JB |
672 | } |
673 | } | |
674 | ||
484a54c2 THJ |
675 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
676 | sta->cparams.target = MS2TIME(20); | |
677 | sta->cparams.interval = MS2TIME(100); | |
678 | sta->cparams.ecn = true; | |
dfcb63ce THJ |
679 | sta->cparams.ce_threshold_selector = 0; |
680 | sta->cparams.ce_threshold_mask = 0; | |
484a54c2 | 681 | |
bdcbd8e0 | 682 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 683 | |
abfbc3af | 684 | return sta; |
ba8c3d6f FF |
685 | |
686 | free_txq: | |
687 | if (sta->sta.txq[0]) | |
688 | kfree(to_txq_info(sta->sta.txq[0])); | |
689 | free: | |
cb71f1d1 | 690 | sta_info_free_link(&sta->deflink); |
433f5bc1 JB |
691 | #ifdef CONFIG_MAC80211_MESH |
692 | kfree(sta->mesh); | |
693 | #endif | |
ba8c3d6f FF |
694 | kfree(sta); |
695 | return NULL; | |
73651ee6 JB |
696 | } |
697 | ||
f36fe0a2 JB |
698 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
699 | const u8 *addr, gfp_t gfp) | |
700 | { | |
701 | return __sta_info_alloc(sdata, addr, -1, addr, gfp); | |
702 | } | |
703 | ||
704 | struct sta_info *sta_info_alloc_with_link(struct ieee80211_sub_if_data *sdata, | |
705 | const u8 *mld_addr, | |
706 | unsigned int link_id, | |
707 | const u8 *link_addr, | |
708 | gfp_t gfp) | |
709 | { | |
710 | return __sta_info_alloc(sdata, mld_addr, link_id, link_addr, gfp); | |
711 | } | |
712 | ||
8c71df7a | 713 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 714 | { |
34e89507 | 715 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 716 | |
03e4497e JB |
717 | /* |
718 | * Can't be a WARN_ON because it can be triggered through a race: | |
719 | * something inserts a STA (on one CPU) without holding the RTNL | |
720 | * and another CPU turns off the net device. | |
721 | */ | |
8c71df7a GE |
722 | if (unlikely(!ieee80211_sdata_running(sdata))) |
723 | return -ENETDOWN; | |
03e4497e | 724 | |
b203ca39 | 725 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
deebea0a | 726 | !is_valid_ether_addr(sta->sta.addr))) |
8c71df7a GE |
727 | return -EINVAL; |
728 | ||
83e7e4ce HX |
729 | /* The RCU read lock is required by rhashtable due to |
730 | * asynchronous resize/rehash. We also require the mutex | |
731 | * for correctness. | |
31104891 JB |
732 | */ |
733 | rcu_read_lock(); | |
734 | lockdep_assert_held(&sdata->local->sta_mtx); | |
735 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
736 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
737 | rcu_read_unlock(); | |
738 | return -ENOTUNIQ; | |
739 | } | |
740 | rcu_read_unlock(); | |
741 | ||
8c71df7a GE |
742 | return 0; |
743 | } | |
744 | ||
f09603a2 JB |
745 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
746 | struct ieee80211_sub_if_data *sdata, | |
747 | struct sta_info *sta) | |
748 | { | |
749 | enum ieee80211_sta_state state; | |
750 | int err = 0; | |
751 | ||
752 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
753 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
754 | if (err) | |
755 | break; | |
756 | } | |
757 | ||
758 | if (!err) { | |
a4ec45a4 JB |
759 | /* |
760 | * Drivers using legacy sta_add/sta_remove callbacks only | |
761 | * get uploaded set to true after sta_add is called. | |
762 | */ | |
763 | if (!local->ops->sta_add) | |
764 | sta->uploaded = true; | |
f09603a2 JB |
765 | return 0; |
766 | } | |
767 | ||
768 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
769 | sdata_info(sdata, |
770 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
771 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
772 | err = 0; |
773 | } | |
774 | ||
775 | /* unwind on error */ | |
776 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
777 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
778 | ||
779 | return err; | |
780 | } | |
781 | ||
d405fd8c GG |
782 | static void |
783 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
784 | { | |
785 | struct ieee80211_local *local = sdata->local; | |
786 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
787 | struct sta_info *sta; | |
788 | ||
789 | rcu_read_lock(); | |
790 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
791 | if (sdata != sta->sdata || | |
792 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
793 | continue; | |
794 | if (!sta->sta.support_p2p_ps) { | |
795 | allow_p2p_go_ps = false; | |
796 | break; | |
797 | } | |
798 | } | |
799 | rcu_read_unlock(); | |
800 | ||
801 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
802 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
d8675a63 JB |
803 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
804 | BSS_CHANGED_P2P_PS); | |
d405fd8c GG |
805 | } |
806 | } | |
807 | ||
8c71df7a GE |
808 | /* |
809 | * should be called with sta_mtx locked | |
810 | * this function replaces the mutex lock | |
811 | * with a RCU lock | |
812 | */ | |
4d33960b | 813 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
814 | { |
815 | struct ieee80211_local *local = sta->local; | |
816 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 817 | struct station_info *sinfo = NULL; |
8c71df7a GE |
818 | int err = 0; |
819 | ||
820 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 821 | |
7852e361 JB |
822 | /* check if STA exists already */ |
823 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
824 | err = -EEXIST; | |
8f9dcc29 | 825 | goto out_cleanup; |
4d33960b | 826 | } |
32bfd35d | 827 | |
0c2e3842 KV |
828 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
829 | if (!sinfo) { | |
830 | err = -ENOMEM; | |
8f9dcc29 | 831 | goto out_cleanup; |
0c2e3842 KV |
832 | } |
833 | ||
7852e361 JB |
834 | local->num_sta++; |
835 | local->sta_generation++; | |
836 | smp_mb(); | |
4d33960b | 837 | |
5108ca82 JB |
838 | /* simplify things and don't accept BA sessions yet */ |
839 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
840 | ||
7852e361 | 841 | /* make the station visible */ |
62b14b24 JB |
842 | err = sta_info_hash_add(local, sta); |
843 | if (err) | |
844 | goto out_drop_sta; | |
83d5cc01 | 845 | |
f36fe0a2 JB |
846 | if (sta->sta.valid_links) { |
847 | err = link_sta_info_hash_add(local, &sta->deflink); | |
848 | if (err) { | |
849 | sta_info_hash_del(local, sta); | |
850 | goto out_drop_sta; | |
851 | } | |
852 | } | |
853 | ||
2bad7748 | 854 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 855 | |
4dde3c36 MG |
856 | /* update channel context before notifying the driver about state |
857 | * change, this enables driver using the updated channel context right away. | |
858 | */ | |
859 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
0cbf348a | 860 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
4dde3c36 MG |
861 | if (!sta->sta.support_p2p_ps) |
862 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
863 | } | |
864 | ||
5108ca82 JB |
865 | /* notify driver */ |
866 | err = sta_info_insert_drv_state(local, sdata, sta); | |
867 | if (err) | |
868 | goto out_remove; | |
869 | ||
7852e361 | 870 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c | 871 | |
5108ca82 JB |
872 | /* accept BA sessions now */ |
873 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 874 | |
7852e361 JB |
875 | ieee80211_sta_debugfs_add(sta); |
876 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 877 | |
0ef049dc AB |
878 | sinfo->generation = local->sta_generation; |
879 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
880 | kfree(sinfo); | |
d0709a65 | 881 | |
bdcbd8e0 | 882 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 883 | |
34e89507 JB |
884 | /* move reference to rcu-protected */ |
885 | rcu_read_lock(); | |
886 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 887 | |
73651ee6 JB |
888 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
889 | mesh_accept_plinks_update(sdata); | |
890 | ||
8c71df7a | 891 | return 0; |
5108ca82 | 892 | out_remove: |
0ad49045 JB |
893 | if (sta->sta.valid_links) |
894 | link_sta_info_hash_del(local, &sta->deflink); | |
5108ca82 JB |
895 | sta_info_hash_del(local, sta); |
896 | list_del_rcu(&sta->list); | |
62b14b24 | 897 | out_drop_sta: |
5108ca82 JB |
898 | local->num_sta--; |
899 | synchronize_net(); | |
8f9dcc29 | 900 | out_cleanup: |
7bc40aed | 901 | cleanup_single_sta(sta); |
4d33960b | 902 | mutex_unlock(&local->sta_mtx); |
ea32f065 | 903 | kfree(sinfo); |
4d33960b JB |
904 | rcu_read_lock(); |
905 | return err; | |
8c71df7a GE |
906 | } |
907 | ||
908 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
909 | { | |
910 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 911 | int err; |
8c71df7a | 912 | |
4d33960b JB |
913 | might_sleep(); |
914 | ||
31104891 JB |
915 | mutex_lock(&local->sta_mtx); |
916 | ||
8c71df7a GE |
917 | err = sta_info_insert_check(sta); |
918 | if (err) { | |
7bc40aed | 919 | sta_info_free(local, sta); |
31104891 | 920 | mutex_unlock(&local->sta_mtx); |
8c71df7a | 921 | rcu_read_lock(); |
7bc40aed | 922 | return err; |
8c71df7a GE |
923 | } |
924 | ||
7bc40aed | 925 | return sta_info_insert_finish(sta); |
f0706e82 JB |
926 | } |
927 | ||
34e89507 JB |
928 | int sta_info_insert(struct sta_info *sta) |
929 | { | |
930 | int err = sta_info_insert_rcu(sta); | |
931 | ||
932 | rcu_read_unlock(); | |
933 | ||
934 | return err; | |
935 | } | |
936 | ||
d012a605 | 937 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
938 | { |
939 | /* | |
940 | * This format has been mandated by the IEEE specifications, | |
941 | * so this line may not be changed to use the __set_bit() format. | |
942 | */ | |
d012a605 | 943 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
944 | } |
945 | ||
d012a605 | 946 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
947 | { |
948 | /* | |
949 | * This format has been mandated by the IEEE specifications, | |
950 | * so this line may not be changed to use the __clear_bit() format. | |
951 | */ | |
d012a605 | 952 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
953 | } |
954 | ||
3d5839b6 IP |
955 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
956 | { | |
957 | /* | |
958 | * This format has been mandated by the IEEE specifications, | |
959 | * so this line may not be changed to use the test_bit() format. | |
960 | */ | |
961 | return tim[id / 8] & (1 << (id % 8)); | |
962 | } | |
963 | ||
948d887d | 964 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 965 | { |
948d887d JB |
966 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
967 | switch (ac) { | |
968 | case IEEE80211_AC_VO: | |
969 | return BIT(6) | BIT(7); | |
970 | case IEEE80211_AC_VI: | |
971 | return BIT(4) | BIT(5); | |
972 | case IEEE80211_AC_BE: | |
973 | return BIT(0) | BIT(3); | |
974 | case IEEE80211_AC_BK: | |
975 | return BIT(1) | BIT(2); | |
976 | default: | |
977 | WARN_ON(1); | |
978 | return 0; | |
d0709a65 | 979 | } |
004c872e JB |
980 | } |
981 | ||
9b7a86f3 | 982 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 983 | { |
c868cb35 | 984 | struct ieee80211_local *local = sta->local; |
d012a605 | 985 | struct ps_data *ps; |
948d887d JB |
986 | bool indicate_tim = false; |
987 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
988 | int ac; | |
a69bd8e6 | 989 | u16 id = sta->sta.aid; |
d012a605 MP |
990 | |
991 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
992 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
993 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
994 | return; | |
004c872e | 995 | |
d012a605 | 996 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
997 | #ifdef CONFIG_MAC80211_MESH |
998 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
999 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 1000 | #endif |
d012a605 | 1001 | } else { |
c868cb35 | 1002 | return; |
d012a605 | 1003 | } |
3e122be0 | 1004 | |
c868cb35 | 1005 | /* No need to do anything if the driver does all */ |
d98937f4 | 1006 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 1007 | return; |
004c872e | 1008 | |
c868cb35 JB |
1009 | if (sta->dead) |
1010 | goto done; | |
3e122be0 | 1011 | |
948d887d JB |
1012 | /* |
1013 | * If all ACs are delivery-enabled then we should build | |
1014 | * the TIM bit for all ACs anyway; if only some are then | |
1015 | * we ignore those and build the TIM bit using only the | |
1016 | * non-enabled ones. | |
1017 | */ | |
1018 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
1019 | ignore_for_tim = 0; | |
1020 | ||
9b7a86f3 JB |
1021 | if (ignore_pending) |
1022 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
1023 | ||
948d887d JB |
1024 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1025 | unsigned long tids; | |
3e122be0 | 1026 | |
f438ceb8 | 1027 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1028 | continue; |
1029 | ||
1030 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
1031 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
1032 | if (indicate_tim) | |
1033 | break; | |
3e122be0 | 1034 | |
948d887d JB |
1035 | tids = ieee80211_tids_for_ac(ac); |
1036 | ||
1037 | indicate_tim |= | |
1038 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
1039 | indicate_tim |= |
1040 | sta->txq_buffered_tids & tids; | |
d0709a65 | 1041 | } |
004c872e | 1042 | |
c868cb35 | 1043 | done: |
65f704a5 | 1044 | spin_lock_bh(&local->tim_lock); |
004c872e | 1045 | |
3d5839b6 IP |
1046 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
1047 | goto out_unlock; | |
1048 | ||
948d887d | 1049 | if (indicate_tim) |
d012a605 | 1050 | __bss_tim_set(ps->tim, id); |
c868cb35 | 1051 | else |
d012a605 | 1052 | __bss_tim_clear(ps->tim, id); |
004c872e | 1053 | |
9b7a86f3 | 1054 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 1055 | local->tim_in_locked_section = true; |
948d887d | 1056 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
1057 | local->tim_in_locked_section = false; |
1058 | } | |
3e122be0 | 1059 | |
3d5839b6 | 1060 | out_unlock: |
65f704a5 | 1061 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
1062 | } |
1063 | ||
9b7a86f3 JB |
1064 | void sta_info_recalc_tim(struct sta_info *sta) |
1065 | { | |
1066 | __sta_info_recalc_tim(sta, false); | |
1067 | } | |
1068 | ||
cd0b8d89 | 1069 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 1070 | { |
e039fa4a | 1071 | struct ieee80211_tx_info *info; |
f0706e82 JB |
1072 | int timeout; |
1073 | ||
1074 | if (!skb) | |
cd0b8d89 | 1075 | return false; |
f0706e82 | 1076 | |
e039fa4a | 1077 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
1078 | |
1079 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
1080 | timeout = (sta->listen_interval * |
1081 | sta->sdata->vif.bss_conf.beacon_int * | |
1082 | 32 / 15625) * HZ; | |
f0706e82 JB |
1083 | if (timeout < STA_TX_BUFFER_EXPIRE) |
1084 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 1085 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
1086 | } |
1087 | ||
1088 | ||
948d887d JB |
1089 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
1090 | struct sta_info *sta, int ac) | |
f0706e82 JB |
1091 | { |
1092 | unsigned long flags; | |
1093 | struct sk_buff *skb; | |
1094 | ||
60750397 JB |
1095 | /* |
1096 | * First check for frames that should expire on the filtered | |
1097 | * queue. Frames here were rejected by the driver and are on | |
1098 | * a separate queue to avoid reordering with normal PS-buffered | |
1099 | * frames. They also aren't accounted for right now in the | |
1100 | * total_ps_buffered counter. | |
1101 | */ | |
1102 | for (;;) { | |
948d887d JB |
1103 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
1104 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 1105 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1106 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
1107 | else |
1108 | skb = NULL; | |
948d887d | 1109 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
1110 | |
1111 | /* | |
1112 | * Frames are queued in order, so if this one | |
1113 | * hasn't expired yet we can stop testing. If | |
1114 | * we actually reached the end of the queue we | |
1115 | * also need to stop, of course. | |
1116 | */ | |
1117 | if (!skb) | |
1118 | break; | |
d4fa14cd | 1119 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
1120 | } |
1121 | ||
1122 | /* | |
1123 | * Now also check the normal PS-buffered queue, this will | |
1124 | * only find something if the filtered queue was emptied | |
1125 | * since the filtered frames are all before the normal PS | |
1126 | * buffered frames. | |
1127 | */ | |
f0706e82 | 1128 | for (;;) { |
948d887d JB |
1129 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
1130 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 1131 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1132 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 1133 | else |
f0706e82 | 1134 | skb = NULL; |
948d887d | 1135 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 1136 | |
60750397 JB |
1137 | /* |
1138 | * frames are queued in order, so if this one | |
1139 | * hasn't expired yet (or we reached the end of | |
1140 | * the queue) we can stop testing | |
1141 | */ | |
836341a7 | 1142 | if (!skb) |
f0706e82 | 1143 | break; |
836341a7 | 1144 | |
836341a7 | 1145 | local->total_ps_buffered--; |
bdcbd8e0 JB |
1146 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
1147 | sta->sta.addr); | |
d4fa14cd | 1148 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 1149 | } |
3393a608 | 1150 | |
60750397 JB |
1151 | /* |
1152 | * Finally, recalculate the TIM bit for this station -- it might | |
1153 | * now be clear because the station was too slow to retrieve its | |
1154 | * frames. | |
1155 | */ | |
1156 | sta_info_recalc_tim(sta); | |
1157 | ||
1158 | /* | |
1159 | * Return whether there are any frames still buffered, this is | |
1160 | * used to check whether the cleanup timer still needs to run, | |
1161 | * if there are no frames we don't need to rearm the timer. | |
1162 | */ | |
948d887d JB |
1163 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
1164 | skb_queue_empty(&sta->tx_filtered[ac])); | |
1165 | } | |
1166 | ||
1167 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
1168 | struct sta_info *sta) | |
1169 | { | |
1170 | bool have_buffered = false; | |
1171 | int ac; | |
1172 | ||
3f52b7e3 MP |
1173 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
1174 | if (!sta->sdata->bss && | |
1175 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
1176 | return false; |
1177 | ||
1178 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1179 | have_buffered |= | |
1180 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
1181 | ||
1182 | return have_buffered; | |
f0706e82 JB |
1183 | } |
1184 | ||
d778207b | 1185 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 1186 | { |
34e89507 JB |
1187 | struct ieee80211_local *local; |
1188 | struct ieee80211_sub_if_data *sdata; | |
0ad49045 | 1189 | int ret, i; |
f0706e82 | 1190 | |
34e89507 | 1191 | might_sleep(); |
f0706e82 | 1192 | |
34e89507 JB |
1193 | if (!sta) |
1194 | return -ENOENT; | |
5bb644a0 | 1195 | |
34e89507 JB |
1196 | local = sta->local; |
1197 | sdata = sta->sdata; | |
f0706e82 | 1198 | |
83d5cc01 JB |
1199 | lockdep_assert_held(&local->sta_mtx); |
1200 | ||
098a6070 JB |
1201 | /* |
1202 | * Before removing the station from the driver and | |
1203 | * rate control, it might still start new aggregation | |
1204 | * sessions -- block that to make sure the tear-down | |
1205 | * will be sufficient. | |
1206 | */ | |
c2c98fde | 1207 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1208 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1209 | |
f59374eb SS |
1210 | /* |
1211 | * Before removing the station from the driver there might be pending | |
1212 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1213 | * all such frames to be processed. | |
1214 | */ | |
1215 | drv_sync_rx_queues(local, sta); | |
1216 | ||
0ad49045 JB |
1217 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { |
1218 | struct link_sta_info *link_sta; | |
1219 | ||
1220 | if (!(sta->sta.valid_links & BIT(i))) | |
1221 | continue; | |
1222 | ||
1223 | link_sta = rcu_dereference_protected(sta->link[i], | |
1224 | lockdep_is_held(&local->sta_mtx)); | |
1225 | ||
1226 | link_sta_info_hash_del(local, link_sta); | |
1227 | } | |
1228 | ||
34e89507 | 1229 | ret = sta_info_hash_del(local, sta); |
b01711be | 1230 | if (WARN_ON(ret)) |
34e89507 JB |
1231 | return ret; |
1232 | ||
a7a6bdd0 AN |
1233 | /* |
1234 | * for TDLS peers, make sure to return to the base channel before | |
1235 | * removal. | |
1236 | */ | |
1237 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1238 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1239 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1240 | } | |
1241 | ||
794454ce | 1242 | list_del_rcu(&sta->list); |
ef044763 | 1243 | sta->removed = true; |
4d33960b | 1244 | |
6a9d1b91 JB |
1245 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
1246 | ||
a710c816 JB |
1247 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1248 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1249 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1250 | ||
d778207b JB |
1251 | return 0; |
1252 | } | |
1253 | ||
1254 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1255 | { | |
1256 | struct ieee80211_local *local = sta->local; | |
1257 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1258 | struct station_info *sinfo; |
d778207b JB |
1259 | int ret; |
1260 | ||
1261 | /* | |
1262 | * NOTE: This assumes at least synchronize_net() was done | |
1263 | * after _part1 and before _part2! | |
1264 | */ | |
1265 | ||
1266 | might_sleep(); | |
1267 | lockdep_assert_held(&local->sta_mtx); | |
1268 | ||
5981fe5b | 1269 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
b16798f5 JB |
1270 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
1271 | WARN_ON_ONCE(ret); | |
1272 | } | |
1273 | ||
c8782078 | 1274 | /* now keys can no longer be reached */ |
6d10e46b | 1275 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1276 | |
9b7a86f3 JB |
1277 | /* disable TIM bit - last chance to tell driver */ |
1278 | __sta_info_recalc_tim(sta, true); | |
1279 | ||
34e89507 JB |
1280 | sta->dead = true; |
1281 | ||
34e89507 JB |
1282 | local->num_sta--; |
1283 | local->sta_generation++; | |
1284 | ||
83d5cc01 | 1285 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1286 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1287 | if (ret) { | |
83d5cc01 JB |
1288 | WARN_ON_ONCE(1); |
1289 | break; | |
1290 | } | |
1291 | } | |
d9a7ddb0 | 1292 | |
f09603a2 | 1293 | if (sta->uploaded) { |
f09603a2 JB |
1294 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1295 | IEEE80211_STA_NOTEXIST); | |
1296 | WARN_ON_ONCE(ret != 0); | |
1297 | } | |
34e89507 | 1298 | |
bdcbd8e0 JB |
1299 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1300 | ||
0ef049dc AB |
1301 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1302 | if (sinfo) | |
0fdf1493 | 1303 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1304 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1305 | kfree(sinfo); | |
ec15e68b | 1306 | |
34e89507 JB |
1307 | ieee80211_sta_debugfs_remove(sta); |
1308 | ||
3a11ce08 JB |
1309 | ieee80211_destroy_frag_cache(&sta->frags); |
1310 | ||
d34ba216 | 1311 | cleanup_single_sta(sta); |
d778207b JB |
1312 | } |
1313 | ||
1314 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1315 | { | |
1316 | int err = __sta_info_destroy_part1(sta); | |
1317 | ||
1318 | if (err) | |
1319 | return err; | |
1320 | ||
1321 | synchronize_net(); | |
1322 | ||
1323 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1324 | |
1325 | return 0; | |
4d6141c3 JS |
1326 | } |
1327 | ||
34e89507 | 1328 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1329 | { |
34e89507 JB |
1330 | struct sta_info *sta; |
1331 | int ret; | |
4d6141c3 | 1332 | |
34e89507 | 1333 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1334 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1335 | ret = __sta_info_destroy(sta); |
1336 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1337 | |
1338 | return ret; | |
1339 | } | |
1340 | ||
34e89507 JB |
1341 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1342 | const u8 *addr) | |
e9f207f0 | 1343 | { |
34e89507 JB |
1344 | struct sta_info *sta; |
1345 | int ret; | |
e9f207f0 | 1346 | |
34e89507 | 1347 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1348 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1349 | ret = __sta_info_destroy(sta); |
1350 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1351 | |
34e89507 JB |
1352 | return ret; |
1353 | } | |
e9f207f0 | 1354 | |
34f11cd3 | 1355 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1356 | { |
34f11cd3 | 1357 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1358 | struct sta_info *sta; |
3393a608 | 1359 | bool timer_needed = false; |
34e89507 JB |
1360 | |
1361 | rcu_read_lock(); | |
1362 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1363 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1364 | timer_needed = true; | |
34e89507 | 1365 | rcu_read_unlock(); |
e9f207f0 | 1366 | |
34e89507 JB |
1367 | if (local->quiescing) |
1368 | return; | |
d0709a65 | 1369 | |
3393a608 JO |
1370 | if (!timer_needed) |
1371 | return; | |
1372 | ||
26d59535 JB |
1373 | mod_timer(&local->sta_cleanup, |
1374 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1375 | } |
e9f207f0 | 1376 | |
7bedd0cf JB |
1377 | int sta_info_init(struct ieee80211_local *local) |
1378 | { | |
1379 | int err; | |
1380 | ||
83e7e4ce | 1381 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1382 | if (err) |
1383 | return err; | |
1384 | ||
ba6ddab9 JB |
1385 | err = rhltable_init(&local->link_sta_hash, &link_sta_rht_params); |
1386 | if (err) { | |
1387 | rhltable_destroy(&local->sta_hash); | |
1388 | return err; | |
1389 | } | |
1390 | ||
4d33960b | 1391 | spin_lock_init(&local->tim_lock); |
34e89507 | 1392 | mutex_init(&local->sta_mtx); |
f0706e82 | 1393 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1394 | |
34f11cd3 | 1395 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1396 | return 0; |
f0706e82 JB |
1397 | } |
1398 | ||
1399 | void sta_info_stop(struct ieee80211_local *local) | |
1400 | { | |
a56f992c | 1401 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1402 | rhltable_destroy(&local->sta_hash); |
ba6ddab9 | 1403 | rhltable_destroy(&local->link_sta_hash); |
f0706e82 JB |
1404 | } |
1405 | ||
051007d9 | 1406 | |
e716251d | 1407 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1408 | { |
b998e8bb | 1409 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1410 | struct sta_info *sta, *tmp; |
d778207b | 1411 | LIST_HEAD(free_list); |
44213b5e | 1412 | int ret = 0; |
f0706e82 | 1413 | |
d0709a65 | 1414 | might_sleep(); |
be8755e1 | 1415 | |
e716251d JB |
1416 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1417 | WARN_ON(vlans && !sdata->bss); | |
1418 | ||
34e89507 | 1419 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1420 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1421 | if (sdata == sta->sdata || |
1422 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1423 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1424 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1425 | ret++; |
1426 | } | |
be8755e1 | 1427 | } |
d778207b JB |
1428 | |
1429 | if (!list_empty(&free_list)) { | |
1430 | synchronize_net(); | |
1431 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1432 | __sta_info_destroy_part2(sta); | |
1433 | } | |
34e89507 | 1434 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1435 | |
051007d9 JB |
1436 | return ret; |
1437 | } | |
1438 | ||
24723d1b JB |
1439 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1440 | unsigned long exp_time) | |
1441 | { | |
1442 | struct ieee80211_local *local = sdata->local; | |
1443 | struct sta_info *sta, *tmp; | |
24723d1b | 1444 | |
34e89507 | 1445 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1446 | |
1447 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1448 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1449 | ||
ec2b774e ML |
1450 | if (sdata != sta->sdata) |
1451 | continue; | |
1452 | ||
b8da6b6a | 1453 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1454 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1455 | sta->sta.addr); | |
3f52b7e3 MP |
1456 | |
1457 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1458 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1459 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1460 | ||
34e89507 | 1461 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1462 | } |
e46a2cf9 MSS |
1463 | } |
1464 | ||
34e89507 | 1465 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1466 | } |
17741cdc | 1467 | |
686b9cb9 | 1468 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1469 | const u8 *addr, |
1470 | const u8 *localaddr) | |
17741cdc | 1471 | { |
7bedd0cf | 1472 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1473 | struct rhlist_head *tmp; |
7bedd0cf | 1474 | struct sta_info *sta; |
17741cdc | 1475 | |
686b9cb9 BG |
1476 | /* |
1477 | * Just return a random station if localaddr is NULL | |
1478 | * ... first in list. | |
1479 | */ | |
83e7e4ce | 1480 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1481 | if (localaddr && |
b203ca39 | 1482 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1483 | continue; |
f7c65594 JB |
1484 | if (!sta->uploaded) |
1485 | return NULL; | |
abe60632 | 1486 | return &sta->sta; |
f7c65594 JB |
1487 | } |
1488 | ||
abe60632 | 1489 | return NULL; |
17741cdc | 1490 | } |
686b9cb9 | 1491 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1492 | |
1493 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1494 | const u8 *addr) | |
1495 | { | |
f7c65594 | 1496 | struct sta_info *sta; |
5ed176e1 JB |
1497 | |
1498 | if (!vif) | |
1499 | return NULL; | |
1500 | ||
f7c65594 JB |
1501 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1502 | if (!sta) | |
1503 | return NULL; | |
1504 | ||
1505 | if (!sta->uploaded) | |
1506 | return NULL; | |
5ed176e1 | 1507 | |
f7c65594 | 1508 | return &sta->sta; |
5ed176e1 | 1509 | } |
17741cdc | 1510 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1511 | |
e3685e03 JB |
1512 | /* powersave support code */ |
1513 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1514 | { |
608383bf | 1515 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1516 | struct ieee80211_local *local = sdata->local; |
1517 | struct sk_buff_head pending; | |
ba8c3d6f | 1518 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1519 | unsigned long flags; |
d012a605 MP |
1520 | struct ps_data *ps; |
1521 | ||
3918edb0 FF |
1522 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1523 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1524 | u.ap); | |
1525 | ||
1526 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1527 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1528 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1529 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1530 | else |
1531 | return; | |
50a9432d | 1532 | |
c2c98fde | 1533 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1534 | |
5a306f58 | 1535 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1536 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1537 | sta->txq_buffered_tids = 0; |
af818581 | 1538 | |
30686bf7 | 1539 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1540 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1541 | |
adf8ed01 JB |
1542 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1543 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1544 | continue; | |
ba8c3d6f | 1545 | |
18667600 | 1546 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1547 | } |
1548 | ||
948d887d | 1549 | skb_queue_head_init(&pending); |
af818581 | 1550 | |
1d147bfa EG |
1551 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1552 | spin_lock(&sta->ps_lock); | |
af818581 | 1553 | /* Send all buffered frames to the station */ |
948d887d JB |
1554 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1555 | int count = skb_queue_len(&pending), tmp; | |
1556 | ||
987c285c | 1557 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1558 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1559 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1560 | tmp = skb_queue_len(&pending); |
1561 | filtered += tmp - count; | |
1562 | count = tmp; | |
1563 | ||
987c285c | 1564 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1565 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1566 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1567 | tmp = skb_queue_len(&pending); |
1568 | buffered += tmp - count; | |
1569 | } | |
1570 | ||
e3685e03 | 1571 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1572 | |
1573 | /* now we're no longer in the deliver code */ | |
1574 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1575 | ||
1576 | /* The station might have polled and then woken up before we responded, | |
1577 | * so clear these flags now to avoid them sticking around. | |
1578 | */ | |
1579 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1580 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1581 | spin_unlock(&sta->ps_lock); |
948d887d | 1582 | |
e3685e03 JB |
1583 | atomic_dec(&ps->num_sta_ps); |
1584 | ||
af818581 JB |
1585 | local->total_ps_buffered -= buffered; |
1586 | ||
c868cb35 JB |
1587 | sta_info_recalc_tim(sta); |
1588 | ||
bdcbd8e0 | 1589 | ps_dbg(sdata, |
2595d259 | 1590 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1591 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1592 | |
1593 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1594 | } |
1595 | ||
0ead2510 | 1596 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1597 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1598 | bool call_driver, bool more_data) |
af818581 | 1599 | { |
0ead2510 | 1600 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1601 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1602 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1603 | struct sk_buff *skb; |
ce662b44 JB |
1604 | int size = sizeof(*nullfunc); |
1605 | __le16 fc; | |
a74a8c84 | 1606 | bool qos = sta->sta.wme; |
ce662b44 | 1607 | struct ieee80211_tx_info *info; |
55de908a | 1608 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1609 | |
ce662b44 JB |
1610 | if (qos) { |
1611 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1612 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1613 | IEEE80211_FCTL_FROMDS); | |
1614 | } else { | |
1615 | size -= 2; | |
1616 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1617 | IEEE80211_STYPE_NULLFUNC | | |
1618 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1619 | } |
af818581 | 1620 | |
ce662b44 JB |
1621 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1622 | if (!skb) | |
1623 | return; | |
1624 | ||
1625 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1626 | ||
4df864c1 | 1627 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1628 | nullfunc->frame_control = fc; |
1629 | nullfunc->duration_id = 0; | |
1630 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1631 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1632 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1633 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1634 | |
59b66255 JB |
1635 | skb->priority = tid; |
1636 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1637 | if (qos) { |
ce662b44 JB |
1638 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1639 | ||
0ead2510 | 1640 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1641 | nullfunc->qos_ctrl |= |
1642 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1643 | if (more_data) |
1644 | nullfunc->frame_control |= | |
1645 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1646 | } | |
ce662b44 JB |
1647 | } |
1648 | ||
1649 | info = IEEE80211_SKB_CB(skb); | |
1650 | ||
1651 | /* | |
1652 | * Tell TX path to send this frame even though the | |
1653 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1654 | * exchange. Also set EOSP to indicate this packet |
1655 | * ends the poll/service period. | |
ce662b44 | 1656 | */ |
02f2f1a9 | 1657 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1658 | IEEE80211_TX_STATUS_EOSP | |
1659 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1660 | |
6b127c71 SM |
1661 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1662 | ||
b77cf4f8 JB |
1663 | if (call_driver) |
1664 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1665 | reason, false); | |
40b96408 | 1666 | |
89afe614 JB |
1667 | skb->dev = sdata->dev; |
1668 | ||
55de908a | 1669 | rcu_read_lock(); |
d0a9123e | 1670 | chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
55de908a JB |
1671 | if (WARN_ON(!chanctx_conf)) { |
1672 | rcu_read_unlock(); | |
1673 | kfree_skb(skb); | |
1674 | return; | |
1675 | } | |
1676 | ||
73c4e195 | 1677 | info->band = chanctx_conf->def.chan->band; |
08aca29a | 1678 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1679 | rcu_read_unlock(); |
ce662b44 JB |
1680 | } |
1681 | ||
0a1cb809 JB |
1682 | static int find_highest_prio_tid(unsigned long tids) |
1683 | { | |
1684 | /* lower 3 TIDs aren't ordered perfectly */ | |
1685 | if (tids & 0xF8) | |
1686 | return fls(tids) - 1; | |
1687 | /* TID 0 is BE just like TID 3 */ | |
1688 | if (tids & BIT(0)) | |
1689 | return 0; | |
1690 | return fls(tids) - 1; | |
1691 | } | |
1692 | ||
0ead2510 EG |
1693 | /* Indicates if the MORE_DATA bit should be set in the last |
1694 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1695 | * Note that driver_release_tids is relevant only if | |
1696 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1697 | */ | |
1698 | static bool | |
1699 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1700 | enum ieee80211_frame_release_type reason, | |
1701 | unsigned long driver_release_tids) | |
1702 | { | |
1703 | int ac; | |
1704 | ||
1705 | /* If the driver has data on more than one TID then | |
1706 | * certainly there's more data if we release just a | |
1707 | * single frame now (from a single TID). This will | |
1708 | * only happen for PS-Poll. | |
1709 | */ | |
1710 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1711 | hweight16(driver_release_tids) > 1) | |
1712 | return true; | |
1713 | ||
1714 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1715 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1716 | continue; |
1717 | ||
1718 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1719 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1720 | return true; | |
1721 | } | |
1722 | ||
1723 | return false; | |
1724 | } | |
1725 | ||
47086fc5 | 1726 | static void |
0ead2510 EG |
1727 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1728 | enum ieee80211_frame_release_type reason, | |
1729 | struct sk_buff_head *frames, | |
1730 | unsigned long *driver_release_tids) | |
af818581 JB |
1731 | { |
1732 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1733 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1734 | int ac; |
948d887d | 1735 | |
f9f760b4 | 1736 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1737 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1738 | unsigned long tids; |
1739 | ||
f438ceb8 | 1740 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1741 | continue; |
1742 | ||
4049e09a JB |
1743 | tids = ieee80211_tids_for_ac(ac); |
1744 | ||
f9f760b4 JB |
1745 | /* if we already have frames from software, then we can't also |
1746 | * release from hardware queues | |
1747 | */ | |
0ead2510 EG |
1748 | if (skb_queue_empty(frames)) { |
1749 | *driver_release_tids |= | |
1750 | sta->driver_buffered_tids & tids; | |
1751 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1752 | } |
948d887d | 1753 | |
0ead2510 | 1754 | if (!*driver_release_tids) { |
f9f760b4 JB |
1755 | struct sk_buff *skb; |
1756 | ||
1757 | while (n_frames > 0) { | |
1758 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1759 | if (!skb) { | |
1760 | skb = skb_dequeue( | |
1761 | &sta->ps_tx_buf[ac]); | |
1762 | if (skb) | |
1763 | local->total_ps_buffered--; | |
1764 | } | |
1765 | if (!skb) | |
1766 | break; | |
1767 | n_frames--; | |
0ead2510 | 1768 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1769 | } |
4049e09a | 1770 | } |
948d887d | 1771 | |
0ead2510 EG |
1772 | /* If we have more frames buffered on this AC, then abort the |
1773 | * loop since we can't send more data from other ACs before | |
1774 | * the buffered frames from this. | |
f9f760b4 | 1775 | */ |
948d887d | 1776 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1777 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1778 | break; |
af818581 | 1779 | } |
0ead2510 EG |
1780 | } |
1781 | ||
1782 | static void | |
1783 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1784 | int n_frames, u8 ignored_acs, | |
1785 | enum ieee80211_frame_release_type reason) | |
1786 | { | |
1787 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1788 | struct ieee80211_local *local = sdata->local; | |
1789 | unsigned long driver_release_tids = 0; | |
1790 | struct sk_buff_head frames; | |
1791 | bool more_data; | |
1792 | ||
1793 | /* Service or PS-Poll period starts */ | |
1794 | set_sta_flag(sta, WLAN_STA_SP); | |
1795 | ||
1796 | __skb_queue_head_init(&frames); | |
1797 | ||
1798 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1799 | &frames, &driver_release_tids); | |
1800 | ||
1801 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1802 | ||
1a57081a | 1803 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1804 | driver_release_tids = |
1805 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1806 | |
f9f760b4 | 1807 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1808 | int tid, ac; |
af818581 JB |
1809 | |
1810 | /* | |
ce662b44 JB |
1811 | * For PS-Poll, this can only happen due to a race condition |
1812 | * when we set the TIM bit and the station notices it, but | |
1813 | * before it can poll for the frame we expire it. | |
1814 | * | |
1815 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1816 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1817 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1818 | * more than the value specified in the Max SP Length field | |
1819 | * in the QoS Capability element from delivery-enabled ACs, | |
1820 | * that are destined for the non-AP STA. | |
1821 | * | |
1822 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1823 | */ |
af818581 | 1824 | |
ce662b44 | 1825 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1826 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1827 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1828 | break; | |
f438ceb8 | 1829 | tid = 7 - 2 * ac; |
af818581 | 1830 | |
0ead2510 | 1831 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1832 | } else if (!driver_release_tids) { |
47086fc5 JB |
1833 | struct sk_buff_head pending; |
1834 | struct sk_buff *skb; | |
40b96408 JB |
1835 | int num = 0; |
1836 | u16 tids = 0; | |
b77cf4f8 | 1837 | bool need_null = false; |
af818581 | 1838 | |
47086fc5 | 1839 | skb_queue_head_init(&pending); |
af818581 | 1840 | |
47086fc5 JB |
1841 | while ((skb = __skb_dequeue(&frames))) { |
1842 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1843 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1844 | u8 *qoshdr = NULL; |
1845 | ||
1846 | num++; | |
af818581 | 1847 | |
47086fc5 JB |
1848 | /* |
1849 | * Tell TX path to send this frame even though the | |
1850 | * STA may still remain is PS mode after this frame | |
1851 | * exchange. | |
1852 | */ | |
6b127c71 SM |
1853 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1854 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1855 | |
1856 | /* | |
1857 | * Use MoreData flag to indicate whether there are | |
1858 | * more buffered frames for this STA | |
1859 | */ | |
24b9c373 | 1860 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1861 | hdr->frame_control |= |
1862 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1863 | else |
1864 | hdr->frame_control &= | |
1865 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1866 | |
40b96408 JB |
1867 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1868 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1869 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1870 | ||
b77cf4f8 | 1871 | tids |= BIT(skb->priority); |
52a3f20c | 1872 | |
b77cf4f8 JB |
1873 | __skb_queue_tail(&pending, skb); |
1874 | ||
1875 | /* end service period after last frame or add one */ | |
1876 | if (!skb_queue_empty(&frames)) | |
1877 | continue; | |
1878 | ||
1879 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1880 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1881 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1882 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1883 | break; |
52a3f20c | 1884 | } |
deeaee19 | 1885 | |
b77cf4f8 JB |
1886 | /* For uAPSD, things are a bit more complicated. If the |
1887 | * last frame has a QoS header (i.e. is a QoS-data or | |
1888 | * QoS-nulldata frame) then just set the EOSP bit there | |
1889 | * and be done. | |
1890 | * If the frame doesn't have a QoS header (which means | |
1891 | * it should be a bufferable MMPDU) then we can't set | |
1892 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1893 | * frame to the list to send it after the MMPDU. | |
1894 | * | |
1895 | * Note that this code is only in the mac80211-release | |
1896 | * code path, we assume that the driver will not buffer | |
1897 | * anything but QoS-data frames, or if it does, will | |
1898 | * create the QoS-nulldata frame by itself if needed. | |
1899 | * | |
1900 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1901 | */ | |
1902 | if (qoshdr) { | |
1903 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1904 | |
b77cf4f8 JB |
1905 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1906 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1907 | } else { | |
1908 | /* The standard isn't completely clear on this | |
1909 | * as it says the more-data bit should be set | |
1910 | * if there are more BUs. The QoS-Null frame | |
1911 | * we're about to send isn't buffered yet, we | |
1912 | * only create it below, but let's pretend it | |
1913 | * was buffered just in case some clients only | |
1914 | * expect more-data=0 when eosp=1. | |
1915 | */ | |
1916 | hdr->frame_control |= | |
1917 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1918 | need_null = true; | |
1919 | num++; | |
1920 | } | |
1921 | break; | |
47086fc5 | 1922 | } |
af818581 | 1923 | |
40b96408 JB |
1924 | drv_allow_buffered_frames(local, sta, tids, num, |
1925 | reason, more_data); | |
1926 | ||
47086fc5 | 1927 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1928 | |
b77cf4f8 JB |
1929 | if (need_null) |
1930 | ieee80211_send_null_response( | |
0ead2510 EG |
1931 | sta, find_highest_prio_tid(tids), |
1932 | reason, false, false); | |
b77cf4f8 | 1933 | |
c868cb35 | 1934 | sta_info_recalc_tim(sta); |
af818581 | 1935 | } else { |
ba8c3d6f FF |
1936 | int tid; |
1937 | ||
af818581 | 1938 | /* |
4049e09a JB |
1939 | * We need to release a frame that is buffered somewhere in the |
1940 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1941 | * Note that the driver also has to check the number of frames |
1942 | * on the TIDs we're releasing from - if there are more than | |
1943 | * n_frames it has to set the more-data bit (if we didn't ask | |
1944 | * it to set it anyway due to other buffered frames); if there | |
1945 | * are fewer than n_frames it has to make sure to adjust that | |
1946 | * to allow the service period to end properly. | |
4049e09a JB |
1947 | */ |
1948 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1949 | n_frames, reason, more_data); |
4049e09a JB |
1950 | |
1951 | /* | |
1952 | * Note that we don't recalculate the TIM bit here as it would | |
1953 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1954 | * that the TID(s) became empty before returning here from the |
4049e09a | 1955 | * release function. |
f9f760b4 | 1956 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1957 | * became empty or we find that a txq became empty, we'll do the |
1958 | * TIM recalculation. | |
af818581 | 1959 | */ |
ba8c3d6f FF |
1960 | |
1961 | if (!sta->sta.txq[0]) | |
1962 | return; | |
1963 | ||
1964 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
adf8ed01 JB |
1965 | if (!sta->sta.txq[tid] || |
1966 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1967 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1968 | continue; |
1969 | ||
1970 | sta_info_recalc_tim(sta); | |
1971 | break; | |
1972 | } | |
af818581 JB |
1973 | } |
1974 | } | |
1975 | ||
47086fc5 JB |
1976 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1977 | { | |
1978 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1979 | ||
1980 | /* | |
1981 | * If all ACs are delivery-enabled then we should reply | |
1982 | * from any of them, if only some are enabled we reply | |
1983 | * only from the non-enabled ones. | |
1984 | */ | |
1985 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1986 | ignore_for_response = 0; | |
1987 | ||
1988 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1989 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1990 | } | |
1991 | ||
1992 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1993 | { | |
1994 | int n_frames = sta->sta.max_sp; | |
1995 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1996 | ||
1997 | /* | |
1998 | * If we ever grow support for TSPEC this might happen if | |
1999 | * the TSPEC update from hostapd comes in between a trigger | |
2000 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
2001 | * actually getting called. | |
2002 | */ | |
2003 | if (!delivery_enabled) | |
2004 | return; | |
2005 | ||
47086fc5 JB |
2006 | switch (sta->sta.max_sp) { |
2007 | case 1: | |
2008 | n_frames = 2; | |
2009 | break; | |
2010 | case 2: | |
2011 | n_frames = 4; | |
2012 | break; | |
2013 | case 3: | |
2014 | n_frames = 6; | |
2015 | break; | |
2016 | case 0: | |
2017 | /* XXX: what is a good value? */ | |
13a8098a | 2018 | n_frames = 128; |
47086fc5 JB |
2019 | break; |
2020 | } | |
2021 | ||
2022 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
2023 | IEEE80211_FRAME_RELEASE_UAPSD); | |
2024 | } | |
2025 | ||
af818581 JB |
2026 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
2027 | struct ieee80211_sta *pubsta, bool block) | |
2028 | { | |
2029 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2030 | ||
b5878a2d JB |
2031 | trace_api_sta_block_awake(sta->local, pubsta, block); |
2032 | ||
5ac2e350 | 2033 | if (block) { |
c2c98fde | 2034 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 2035 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
2036 | return; |
2037 | } | |
2038 | ||
2039 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
2040 | return; | |
2041 | ||
2042 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
2043 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
2044 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2045 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2046 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
2047 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
2048 | /* must be asleep in this case */ | |
2049 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
2050 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
2051 | } else { | |
2052 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 2053 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 2054 | } |
af818581 JB |
2055 | } |
2056 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 2057 | |
e943789e | 2058 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
2059 | { |
2060 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2061 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
2062 | |
2063 | trace_api_eosp(local, pubsta); | |
2064 | ||
e943789e | 2065 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 2066 | } |
e943789e | 2067 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 2068 | |
0ead2510 EG |
2069 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
2070 | { | |
2071 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2072 | enum ieee80211_frame_release_type reason; | |
2073 | bool more_data; | |
2074 | ||
2075 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
2076 | ||
2077 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
2078 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
2079 | reason, 0); | |
2080 | ||
2081 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
2082 | } | |
2083 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
2084 | ||
042ec453 JB |
2085 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
2086 | u8 tid, bool buffered) | |
dcf55fb5 FF |
2087 | { |
2088 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2089 | ||
5a306f58 | 2090 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
2091 | return; |
2092 | ||
1b000789 JB |
2093 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
2094 | ||
948d887d JB |
2095 | if (buffered) |
2096 | set_bit(tid, &sta->driver_buffered_tids); | |
2097 | else | |
2098 | clear_bit(tid, &sta->driver_buffered_tids); | |
2099 | ||
c868cb35 | 2100 | sta_info_recalc_tim(sta); |
dcf55fb5 | 2101 | } |
042ec453 | 2102 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 2103 | |
942741da FF |
2104 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
2105 | u32 tx_airtime, u32 rx_airtime) | |
b4809e94 | 2106 | { |
942741da FF |
2107 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
2108 | struct ieee80211_local *local = sta->sdata->local; | |
2109 | u8 ac = ieee80211_ac_from_tid(tid); | |
b4809e94 | 2110 | u32 airtime = 0; |
c77bfab9 | 2111 | u32 diff; |
b4809e94 | 2112 | |
942741da | 2113 | if (sta->local->airtime_flags & AIRTIME_USE_TX) |
b4809e94 | 2114 | airtime += tx_airtime; |
942741da | 2115 | if (sta->local->airtime_flags & AIRTIME_USE_RX) |
b4809e94 THJ |
2116 | airtime += rx_airtime; |
2117 | ||
942741da FF |
2118 | spin_lock_bh(&local->active_txq_lock[ac]); |
2119 | sta->airtime[ac].tx_airtime += tx_airtime; | |
2120 | sta->airtime[ac].rx_airtime += rx_airtime; | |
c77bfab9 FF |
2121 | |
2122 | diff = (u32)jiffies - sta->airtime[ac].last_active; | |
2123 | if (diff <= AIRTIME_ACTIVE_DURATION) | |
2124 | sta->airtime[ac].deficit -= airtime; | |
2125 | ||
942741da | 2126 | spin_unlock_bh(&local->active_txq_lock[ac]); |
b4809e94 THJ |
2127 | } |
2128 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
2129 | ||
4c51541d BB |
2130 | void ieee80211_sta_recalc_aggregates(struct ieee80211_sta *pubsta) |
2131 | { | |
2132 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2133 | struct ieee80211_link_sta *link_sta; | |
2134 | int link_id, i; | |
2135 | bool first = true; | |
2136 | ||
2137 | if (!pubsta->valid_links || !pubsta->mlo) { | |
2138 | pubsta->cur = &pubsta->deflink.agg; | |
2139 | return; | |
2140 | } | |
2141 | ||
2142 | rcu_read_lock(); | |
2143 | for_each_sta_active_link(&sta->sdata->vif, pubsta, link_sta, link_id) { | |
2144 | if (first) { | |
2145 | sta->cur = pubsta->deflink.agg; | |
2146 | first = false; | |
2147 | continue; | |
2148 | } | |
2149 | ||
2150 | sta->cur.max_amsdu_len = | |
2151 | min(sta->cur.max_amsdu_len, | |
2152 | link_sta->agg.max_amsdu_len); | |
2153 | sta->cur.max_rc_amsdu_len = | |
2154 | min(sta->cur.max_rc_amsdu_len, | |
2155 | link_sta->agg.max_rc_amsdu_len); | |
2156 | ||
2157 | for (i = 0; i < ARRAY_SIZE(sta->cur.max_tid_amsdu_len); i++) | |
2158 | sta->cur.max_tid_amsdu_len[i] = | |
2159 | min(sta->cur.max_tid_amsdu_len[i], | |
2160 | link_sta->agg.max_tid_amsdu_len[i]); | |
2161 | } | |
2162 | rcu_read_unlock(); | |
2163 | ||
2164 | pubsta->cur = &sta->cur; | |
2165 | } | |
2166 | EXPORT_SYMBOL(ieee80211_sta_recalc_aggregates); | |
2167 | ||
3ace10f5 KY |
2168 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
2169 | struct sta_info *sta, u8 ac, | |
2170 | u16 tx_airtime, bool tx_completed) | |
2171 | { | |
2172 | int tx_pending; | |
2173 | ||
911bde0f THJ |
2174 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
2175 | return; | |
2176 | ||
3ace10f5 KY |
2177 | if (!tx_completed) { |
2178 | if (sta) | |
2179 | atomic_add(tx_airtime, | |
2180 | &sta->airtime[ac].aql_tx_pending); | |
2181 | ||
2182 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
8e4bac06 | 2183 | atomic_add(tx_airtime, &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2184 | return; |
2185 | } | |
2186 | ||
2187 | if (sta) { | |
2188 | tx_pending = atomic_sub_return(tx_airtime, | |
2189 | &sta->airtime[ac].aql_tx_pending); | |
04e35caa | 2190 | if (tx_pending < 0) |
3ace10f5 KY |
2191 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
2192 | tx_pending, 0); | |
2193 | } | |
2194 | ||
8e4bac06 | 2195 | atomic_sub(tx_airtime, &local->aql_total_pending_airtime); |
3ace10f5 | 2196 | tx_pending = atomic_sub_return(tx_airtime, |
8e4bac06 | 2197 | &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2198 | if (WARN_ONCE(tx_pending < 0, |
2199 | "Device %s AC %d pending airtime underflow: %u, %u", | |
2200 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
8e4bac06 FF |
2201 | tx_airtime)) { |
2202 | atomic_cmpxchg(&local->aql_ac_pending_airtime[ac], | |
3ace10f5 | 2203 | tx_pending, 0); |
8e4bac06 FF |
2204 | atomic_sub(tx_pending, &local->aql_total_pending_airtime); |
2205 | } | |
3ace10f5 KY |
2206 | } |
2207 | ||
83d5cc01 JB |
2208 | int sta_info_move_state(struct sta_info *sta, |
2209 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 2210 | { |
8bf11d8d | 2211 | might_sleep(); |
d9a7ddb0 JB |
2212 | |
2213 | if (sta->sta_state == new_state) | |
2214 | return 0; | |
2215 | ||
f09603a2 JB |
2216 | /* check allowed transitions first */ |
2217 | ||
2218 | switch (new_state) { | |
2219 | case IEEE80211_STA_NONE: | |
2220 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
2221 | return -EINVAL; | |
2222 | break; | |
2223 | case IEEE80211_STA_AUTH: | |
2224 | if (sta->sta_state != IEEE80211_STA_NONE && | |
2225 | sta->sta_state != IEEE80211_STA_ASSOC) | |
2226 | return -EINVAL; | |
2227 | break; | |
2228 | case IEEE80211_STA_ASSOC: | |
2229 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
2230 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
2231 | return -EINVAL; | |
2232 | break; | |
2233 | case IEEE80211_STA_AUTHORIZED: | |
2234 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
2235 | return -EINVAL; | |
2236 | break; | |
2237 | default: | |
2238 | WARN(1, "invalid state %d", new_state); | |
2239 | return -EINVAL; | |
2240 | } | |
2241 | ||
bdcbd8e0 JB |
2242 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
2243 | sta->sta.addr, new_state); | |
f09603a2 JB |
2244 | |
2245 | /* | |
2246 | * notify the driver before the actual changes so it can | |
2247 | * fail the transition | |
2248 | */ | |
2249 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
2250 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
2251 | sta->sta_state, new_state); | |
2252 | if (err) | |
2253 | return err; | |
2254 | } | |
2255 | ||
2256 | /* reflect the change in all state variables */ | |
2257 | ||
d9a7ddb0 JB |
2258 | switch (new_state) { |
2259 | case IEEE80211_STA_NONE: | |
2260 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
2261 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
2262 | break; |
2263 | case IEEE80211_STA_AUTH: | |
a7201a6c | 2264 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 2265 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 2266 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 2267 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
0cbf348a | 2268 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2269 | if (!sta->sta.support_p2p_ps) |
2270 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 2271 | } |
d9a7ddb0 JB |
2272 | break; |
2273 | case IEEE80211_STA_ASSOC: | |
29623892 | 2274 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 2275 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
9cf02338 | 2276 | sta->assoc_at = ktime_get_boottime_ns(); |
0cbf348a | 2277 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2278 | if (!sta->sta.support_p2p_ps) |
2279 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 2280 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 2281 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 2282 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2283 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 2284 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 2285 | } |
d9a7ddb0 JB |
2286 | break; |
2287 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 2288 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 2289 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 2290 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2291 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 2292 | ieee80211_check_fast_rx(sta); |
f09603a2 | 2293 | } |
3e493173 JM |
2294 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
2295 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
2296 | cfg80211_send_layer2_update(sta->sdata->dev, | |
2297 | sta->sta.addr); | |
d9a7ddb0 JB |
2298 | break; |
2299 | default: | |
f09603a2 | 2300 | break; |
d9a7ddb0 JB |
2301 | } |
2302 | ||
d9a7ddb0 JB |
2303 | sta->sta_state = new_state; |
2304 | ||
2305 | return 0; | |
2306 | } | |
687da132 | 2307 | |
c9c5962b JB |
2308 | static struct ieee80211_sta_rx_stats * |
2309 | sta_get_last_rx_stats(struct sta_info *sta) | |
2310 | { | |
046d2e7c | 2311 | struct ieee80211_sta_rx_stats *stats = &sta->deflink.rx_stats; |
c9c5962b JB |
2312 | int cpu; |
2313 | ||
046d2e7c | 2314 | if (!sta->deflink.pcpu_rx_stats) |
c9c5962b JB |
2315 | return stats; |
2316 | ||
2317 | for_each_possible_cpu(cpu) { | |
2318 | struct ieee80211_sta_rx_stats *cpustats; | |
2319 | ||
046d2e7c | 2320 | cpustats = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
c9c5962b JB |
2321 | |
2322 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2323 | stats = cpustats; | |
2324 | } | |
2325 | ||
2326 | return stats; | |
2327 | } | |
2328 | ||
41cbb0f5 | 2329 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2330 | struct rate_info *rinfo) |
fbd6ff5c | 2331 | { |
dcba665b | 2332 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2333 | |
dcba665b | 2334 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2335 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2336 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2337 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2338 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2339 | if (STA_STATS_GET(SGI, rate)) | |
2340 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2341 | break; |
2342 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2343 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2344 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2345 | if (STA_STATS_GET(SGI, rate)) | |
2346 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2347 | break; |
2348 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2349 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2350 | u16 brate; |
4f6b1b3d | 2351 | unsigned int shift; |
dcba665b JB |
2352 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2353 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2354 | |
dcba665b | 2355 | sband = local->hw.wiphy->bands[band]; |
8b783d10 TP |
2356 | |
2357 | if (WARN_ON_ONCE(!sband->bitrates)) | |
2358 | break; | |
2359 | ||
dcba665b | 2360 | brate = sband->bitrates[rate_idx].bitrate; |
4f6b1b3d JB |
2361 | if (rinfo->bw == RATE_INFO_BW_5) |
2362 | shift = 2; | |
2363 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2364 | shift = 1; | |
2365 | else | |
2366 | shift = 0; | |
fbd6ff5c | 2367 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2368 | break; |
2369 | } | |
41cbb0f5 LC |
2370 | case STA_STATS_RATE_TYPE_HE: |
2371 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2372 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2373 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2374 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2375 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2376 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2377 | break; | |
fbd6ff5c | 2378 | } |
4f6b1b3d JB |
2379 | } |
2380 | ||
a17d93ff | 2381 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2382 | { |
6aa7de05 | 2383 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2384 | |
4f6b1b3d | 2385 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2386 | return -EINVAL; |
2387 | ||
2388 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2389 | return 0; | |
fbd6ff5c JB |
2390 | } |
2391 | ||
b255b72b SM |
2392 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
2393 | int tid) | |
2394 | { | |
2395 | unsigned int start; | |
2396 | u64 value; | |
2397 | ||
2398 | do { | |
278d3ba6 | 2399 | start = u64_stats_fetch_begin_irq(&rxstats->syncp); |
b255b72b | 2400 | value = rxstats->msdu[tid]; |
278d3ba6 | 2401 | } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start)); |
b255b72b SM |
2402 | |
2403 | return value; | |
2404 | } | |
2405 | ||
0f9c5a61 JB |
2406 | static void sta_set_tidstats(struct sta_info *sta, |
2407 | struct cfg80211_tid_stats *tidstats, | |
2408 | int tid) | |
2409 | { | |
2410 | struct ieee80211_local *local = sta->local; | |
b255b72b | 2411 | int cpu; |
0f9c5a61 JB |
2412 | |
2413 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
046d2e7c S |
2414 | tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->deflink.rx_stats, |
2415 | tid); | |
0f9c5a61 | 2416 | |
046d2e7c | 2417 | if (sta->deflink.pcpu_rx_stats) { |
b255b72b SM |
2418 | for_each_possible_cpu(cpu) { |
2419 | struct ieee80211_sta_rx_stats *cpurxs; | |
2420 | ||
046d2e7c S |
2421 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2422 | cpu); | |
b255b72b SM |
2423 | tidstats->rx_msdu += |
2424 | sta_get_tidstats_msdu(cpurxs, tid); | |
2425 | } | |
2426 | } | |
0f9c5a61 JB |
2427 | |
2428 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2429 | } | |
2430 | ||
2431 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2432 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
046d2e7c | 2433 | tidstats->tx_msdu = sta->deflink.tx_stats.msdu[tid]; |
0f9c5a61 JB |
2434 | } |
2435 | ||
2436 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2437 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2438 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
046d2e7c | 2439 | tidstats->tx_msdu_retries = sta->deflink.status_stats.msdu_retries[tid]; |
0f9c5a61 JB |
2440 | } |
2441 | ||
2442 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2443 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2444 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
046d2e7c | 2445 | tidstats->tx_msdu_failed = sta->deflink.status_stats.msdu_failed[tid]; |
0f9c5a61 | 2446 | } |
2fe4a29a THJ |
2447 | |
2448 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { | |
2449 | spin_lock_bh(&local->fq.lock); | |
2450 | rcu_read_lock(); | |
2451 | ||
2452 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2453 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2454 | to_txq_info(sta->sta.txq[tid])); | |
2455 | ||
2456 | rcu_read_unlock(); | |
2457 | spin_unlock_bh(&local->fq.lock); | |
2458 | } | |
0f9c5a61 JB |
2459 | } |
2460 | ||
c9c5962b JB |
2461 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2462 | { | |
2463 | unsigned int start; | |
2464 | u64 value; | |
2465 | ||
2466 | do { | |
278d3ba6 | 2467 | start = u64_stats_fetch_begin_irq(&rxstats->syncp); |
c9c5962b | 2468 | value = rxstats->bytes; |
278d3ba6 | 2469 | } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start)); |
c9c5962b JB |
2470 | |
2471 | return value; | |
2472 | } | |
2473 | ||
0fdf1493 JB |
2474 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2475 | bool tidstats) | |
b7ffbd7e JB |
2476 | { |
2477 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2478 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2479 | u32 thr = 0; |
c9c5962b JB |
2480 | int i, ac, cpu; |
2481 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2482 | ||
2483 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2484 | |
2485 | sinfo->generation = sdata->local->sta_generation; | |
2486 | ||
225b8189 JB |
2487 | /* do before driver, so beacon filtering drivers have a |
2488 | * chance to e.g. just add the number of filtered beacons | |
2489 | * (or just modify the value entirely, of course) | |
2490 | */ | |
2491 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
bfd8403a | 2492 | sinfo->rx_beacon = sdata->deflink.u.mgd.count_beacon_signal; |
225b8189 | 2493 | |
2b9a7e1b | 2494 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
a4217750 OE |
2495 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2496 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2497 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2498 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2499 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2500 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2501 | |
2502 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
bfd8403a JB |
2503 | sinfo->beacon_loss_count = |
2504 | sdata->deflink.u.mgd.beacon_loss_count; | |
a4217750 | 2505 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2506 | } |
b7ffbd7e | 2507 | |
84b00607 | 2508 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2509 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2510 | sinfo->inactive_time = |
b8da6b6a | 2511 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2512 | |
a4217750 OE |
2513 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2514 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2515 | sinfo->tx_bytes = 0; |
2516 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2517 | sinfo->tx_bytes += sta->deflink.tx_stats.bytes[ac]; |
a4217750 | 2518 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2519 | } |
2520 | ||
a4217750 | 2521 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2522 | sinfo->tx_packets = 0; |
2523 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2524 | sinfo->tx_packets += sta->deflink.tx_stats.packets[ac]; |
a4217750 | 2525 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2526 | } |
2527 | ||
a4217750 OE |
2528 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2529 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
046d2e7c | 2530 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->deflink.rx_stats); |
c9c5962b | 2531 | |
046d2e7c | 2532 | if (sta->deflink.pcpu_rx_stats) { |
c9c5962b JB |
2533 | for_each_possible_cpu(cpu) { |
2534 | struct ieee80211_sta_rx_stats *cpurxs; | |
2535 | ||
046d2e7c S |
2536 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2537 | cpu); | |
c9c5962b JB |
2538 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
2539 | } | |
2540 | } | |
0f9c5a61 | 2541 | |
a4217750 | 2542 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2543 | } |
2544 | ||
a4217750 | 2545 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
046d2e7c S |
2546 | sinfo->rx_packets = sta->deflink.rx_stats.packets; |
2547 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2548 | for_each_possible_cpu(cpu) { |
2549 | struct ieee80211_sta_rx_stats *cpurxs; | |
2550 | ||
046d2e7c S |
2551 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2552 | cpu); | |
c9c5962b JB |
2553 | sinfo->rx_packets += cpurxs->packets; |
2554 | } | |
2555 | } | |
a4217750 | 2556 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2557 | } |
2558 | ||
a4217750 | 2559 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
046d2e7c | 2560 | sinfo->tx_retries = sta->deflink.status_stats.retry_count; |
a4217750 | 2561 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2562 | } |
2563 | ||
a4217750 | 2564 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
046d2e7c | 2565 | sinfo->tx_failed = sta->deflink.status_stats.retry_failed; |
a4217750 | 2566 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2567 | } |
2b9a7e1b | 2568 | |
b4809e94 THJ |
2569 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2570 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2571 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2572 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2573 | } | |
2574 | ||
2575 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2576 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2577 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2578 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2579 | } | |
2580 | ||
2581 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
942741da | 2582 | sinfo->airtime_weight = sta->airtime_weight; |
b4809e94 THJ |
2583 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
2584 | } | |
2585 | ||
046d2e7c S |
2586 | sinfo->rx_dropped_misc = sta->deflink.rx_stats.dropped; |
2587 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2588 | for_each_possible_cpu(cpu) { |
2589 | struct ieee80211_sta_rx_stats *cpurxs; | |
2590 | ||
046d2e7c | 2591 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
e165bc02 | 2592 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2593 | } |
2594 | } | |
b7ffbd7e | 2595 | |
225b8189 JB |
2596 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2597 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2598 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2599 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2600 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2601 | } | |
2602 | ||
30686bf7 JB |
2603 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2604 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2605 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2606 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2607 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2608 | } |
2609 | ||
046d2e7c | 2610 | if (!sta->deflink.pcpu_rx_stats && |
a4217750 | 2611 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2612 | sinfo->signal_avg = |
046d2e7c | 2613 | -ewma_signal_read(&sta->deflink.rx_stats_avg.signal); |
a4217750 | 2614 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2615 | } |
b7ffbd7e | 2616 | } |
2b9a7e1b | 2617 | |
c9c5962b JB |
2618 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2619 | * the sta->rx_stats struct, so the check here is fine with and without | |
2620 | * pcpu statistics | |
2621 | */ | |
2622 | if (last_rxstats->chains && | |
a4217750 OE |
2623 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2624 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2625 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
046d2e7c | 2626 | if (!sta->deflink.pcpu_rx_stats) |
a4217750 | 2627 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2628 | |
2629 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2630 | |
b7ffbd7e | 2631 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2632 | sinfo->chain_signal[i] = |
c9c5962b | 2633 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2634 | sinfo->chain_signal_avg[i] = |
046d2e7c | 2635 | -ewma_signal_read(&sta->deflink.rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2636 | } |
2637 | } | |
2638 | ||
8a263dcb JB |
2639 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) && |
2640 | !sta->sta.valid_links) { | |
046d2e7c | 2641 | sta_set_rate_info_tx(sta, &sta->deflink.tx_stats.last_rate, |
e5a9f8d0 | 2642 | &sinfo->txrate); |
a4217750 | 2643 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2644 | } |
2645 | ||
8a263dcb JB |
2646 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) && |
2647 | !sta->sta.valid_links) { | |
a17d93ff | 2648 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2649 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2650 | } |
b7ffbd7e | 2651 | |
0fdf1493 | 2652 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2653 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2654 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2655 | } |
2656 | ||
b7ffbd7e JB |
2657 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2658 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2659 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2660 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2661 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2662 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2663 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a | 2664 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
1303a51c MT |
2665 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
2666 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); | |
b7ffbd7e | 2667 | |
433f5bc1 JB |
2668 | sinfo->llid = sta->mesh->llid; |
2669 | sinfo->plid = sta->mesh->plid; | |
2670 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2671 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2672 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2673 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2674 | } |
433f5bc1 JB |
2675 | sinfo->local_pm = sta->mesh->local_pm; |
2676 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2677 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2678 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
1303a51c | 2679 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
b7ffbd7e JB |
2680 | #endif |
2681 | } | |
2682 | ||
2683 | sinfo->bss_param.flags = 0; | |
2684 | if (sdata->vif.bss_conf.use_cts_prot) | |
2685 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2686 | if (sdata->vif.bss_conf.use_short_preamble) | |
2687 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2688 | if (sdata->vif.bss_conf.use_short_slot) | |
2689 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2690 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2691 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2692 | ||
2693 | sinfo->sta_flags.set = 0; | |
2694 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2695 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2696 | BIT(NL80211_STA_FLAG_WME) | | |
2697 | BIT(NL80211_STA_FLAG_MFP) | | |
2698 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2699 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2700 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2701 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2702 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2703 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2704 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2705 | if (sta->sta.wme) |
b7ffbd7e JB |
2706 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2707 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2708 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2709 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2710 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2711 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2712 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2713 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2714 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2715 | ||
3b17fbf8 MA |
2716 | thr = sta_get_expected_throughput(sta); |
2717 | ||
2718 | if (thr != 0) { | |
a4217750 | 2719 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2720 | sinfo->expected_throughput = thr; |
2721 | } | |
a78b26ff VN |
2722 | |
2723 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
046d2e7c S |
2724 | sta->deflink.status_stats.ack_signal_filled) { |
2725 | sinfo->ack_signal = sta->deflink.status_stats.last_ack_signal; | |
a78b26ff VN |
2726 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
2727 | } | |
cc60dbbf | 2728 | |
9c06602b | 2729 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
046d2e7c | 2730 | sta->deflink.status_stats.ack_signal_filled) { |
cc60dbbf BP |
2731 | sinfo->avg_ack_signal = |
2732 | -(s8)ewma_avg_signal_read( | |
046d2e7c | 2733 | &sta->deflink.status_stats.avg_ack_signal); |
cc60dbbf | 2734 | sinfo->filled |= |
9c06602b | 2735 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2736 | } |
ab60633c NM |
2737 | |
2738 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2739 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2740 | sinfo->airtime_link_metric = | |
2741 | airtime_link_metric_get(local, sta); | |
2742 | } | |
3b17fbf8 MA |
2743 | } |
2744 | ||
2745 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2746 | { | |
2747 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2748 | struct ieee80211_local *local = sdata->local; | |
2749 | struct rate_control_ref *ref = NULL; | |
2750 | u32 thr = 0; | |
2751 | ||
2752 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2753 | ref = local->rate_ctrl; | |
2754 | ||
b7ffbd7e JB |
2755 | /* check if the driver has a SW RC implementation */ |
2756 | if (ref && ref->ops->get_expected_throughput) | |
2757 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2758 | else | |
4fdbc67a | 2759 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2760 | |
3b17fbf8 | 2761 | return thr; |
b7ffbd7e | 2762 | } |
b8da6b6a JB |
2763 | |
2764 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2765 | { | |
c9c5962b JB |
2766 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2767 | ||
046d2e7c S |
2768 | if (!sta->deflink.status_stats.last_ack || |
2769 | time_after(stats->last_rx, sta->deflink.status_stats.last_ack)) | |
c9c5962b | 2770 | return stats->last_rx; |
046d2e7c | 2771 | return sta->deflink.status_stats.last_ack; |
b8da6b6a | 2772 | } |
484a54c2 THJ |
2773 | |
2774 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2775 | { | |
2776 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2777 | return; | |
2778 | ||
2779 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2780 | sta->cparams.target = MS2TIME(50); | |
2781 | sta->cparams.interval = MS2TIME(300); | |
2782 | sta->cparams.ecn = false; | |
2783 | } else { | |
2784 | sta->cparams.target = MS2TIME(20); | |
2785 | sta->cparams.interval = MS2TIME(100); | |
2786 | sta->cparams.ecn = true; | |
2787 | } | |
2788 | } | |
2789 | ||
2790 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2791 | u32 thr) | |
2792 | { | |
2793 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2794 | ||
2795 | sta_update_codel_params(sta, thr); | |
2796 | } | |
cb71f1d1 JB |
2797 | |
2798 | int ieee80211_sta_allocate_link(struct sta_info *sta, unsigned int link_id) | |
2799 | { | |
2800 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2801 | struct sta_link_alloc *alloc; | |
2802 | int ret; | |
2803 | ||
2804 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2805 | ||
2806 | /* must represent an MLD from the start */ | |
2807 | if (WARN_ON(!sta->sta.valid_links)) | |
2808 | return -EINVAL; | |
2809 | ||
2810 | if (WARN_ON(sta->sta.valid_links & BIT(link_id) || | |
2811 | sta->link[link_id])) | |
2812 | return -EBUSY; | |
2813 | ||
2814 | alloc = kzalloc(sizeof(*alloc), GFP_KERNEL); | |
2815 | if (!alloc) | |
2816 | return -ENOMEM; | |
2817 | ||
2818 | ret = sta_info_alloc_link(sdata->local, &alloc->info, GFP_KERNEL); | |
2819 | if (ret) { | |
2820 | kfree(alloc); | |
2821 | return ret; | |
2822 | } | |
2823 | ||
2824 | sta_info_add_link(sta, link_id, &alloc->info, &alloc->sta); | |
2825 | ||
2826 | return 0; | |
2827 | } | |
2828 | ||
21476ad1 ST |
2829 | void ieee80211_sta_free_link(struct sta_info *sta, unsigned int link_id) |
2830 | { | |
2831 | lockdep_assert_held(&sta->sdata->local->sta_mtx); | |
2832 | ||
2833 | sta_remove_link(sta, link_id, false); | |
2834 | } | |
2835 | ||
cb71f1d1 JB |
2836 | int ieee80211_sta_activate_link(struct sta_info *sta, unsigned int link_id) |
2837 | { | |
2838 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
c71420db | 2839 | struct link_sta_info *link_sta; |
cb71f1d1 JB |
2840 | u16 old_links = sta->sta.valid_links; |
2841 | u16 new_links = old_links | BIT(link_id); | |
2842 | int ret; | |
2843 | ||
c71420db JB |
2844 | link_sta = rcu_dereference_protected(sta->link[link_id], |
2845 | lockdep_is_held(&sdata->local->sta_mtx)); | |
cb71f1d1 | 2846 | |
c71420db | 2847 | if (WARN_ON(old_links == new_links || !link_sta)) |
cb71f1d1 JB |
2848 | return -EINVAL; |
2849 | ||
177577db JB |
2850 | rcu_read_lock(); |
2851 | if (link_sta_info_hash_lookup(sdata->local, link_sta->addr)) { | |
2852 | rcu_read_unlock(); | |
2853 | return -EALREADY; | |
2854 | } | |
2855 | /* we only modify under the mutex so this is fine */ | |
2856 | rcu_read_unlock(); | |
2857 | ||
cb71f1d1 JB |
2858 | sta->sta.valid_links = new_links; |
2859 | ||
80e2b1fa | 2860 | if (!test_sta_flag(sta, WLAN_STA_INSERTED)) |
ba6ddab9 | 2861 | goto hash; |
cb71f1d1 | 2862 | |
4c51541d BB |
2863 | /* Ensure the values are updated for the driver, |
2864 | * redone by sta_remove_link on failure. | |
2865 | */ | |
2866 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
2867 | ||
cb71f1d1 JB |
2868 | ret = drv_change_sta_links(sdata->local, sdata, &sta->sta, |
2869 | old_links, new_links); | |
2870 | if (ret) { | |
2871 | sta->sta.valid_links = old_links; | |
ba6ddab9 | 2872 | sta_remove_link(sta, link_id, false); |
177577db | 2873 | return ret; |
cb71f1d1 JB |
2874 | } |
2875 | ||
ba6ddab9 | 2876 | hash: |
177577db JB |
2877 | ret = link_sta_info_hash_add(sdata->local, link_sta); |
2878 | WARN_ON(ret); | |
2879 | return 0; | |
cb71f1d1 JB |
2880 | } |
2881 | ||
2882 | void ieee80211_sta_remove_link(struct sta_info *sta, unsigned int link_id) | |
2883 | { | |
2884 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
a8f62399 | 2885 | u16 old_links = sta->sta.valid_links; |
cb71f1d1 JB |
2886 | |
2887 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2888 | ||
2889 | sta->sta.valid_links &= ~BIT(link_id); | |
2890 | ||
2891 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) | |
2892 | drv_change_sta_links(sdata->local, sdata, &sta->sta, | |
a8f62399 | 2893 | old_links, sta->sta.valid_links); |
cb71f1d1 | 2894 | |
ba6ddab9 | 2895 | sta_remove_link(sta, link_id, true); |
cb71f1d1 | 2896 | } |
175ad2ec JB |
2897 | |
2898 | void ieee80211_sta_set_max_amsdu_subframes(struct sta_info *sta, | |
2899 | const u8 *ext_capab, | |
2900 | unsigned int ext_capab_len) | |
2901 | { | |
2902 | u8 val; | |
2903 | ||
2904 | sta->sta.max_amsdu_subframes = 0; | |
2905 | ||
2906 | if (ext_capab_len < 8) | |
2907 | return; | |
2908 | ||
2909 | /* The sender might not have sent the last bit, consider it to be 0 */ | |
2910 | val = u8_get_bits(ext_capab[7], WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB); | |
2911 | ||
2912 | /* we did get all the bits, take the MSB as well */ | |
2913 | if (ext_capab_len >= 9) | |
2914 | val |= u8_get_bits(ext_capab[8], | |
2915 | WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB) << 1; | |
2916 | ||
2917 | if (val) | |
2918 | sta->sta.max_amsdu_subframes = 4 << val; | |
2919 | } | |
65fd846c JB |
2920 | |
2921 | #ifdef CONFIG_LOCKDEP | |
2922 | bool lockdep_sta_mutex_held(struct ieee80211_sta *pubsta) | |
2923 | { | |
2924 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2925 | ||
2926 | return lockdep_is_held(&sta->local->sta_mtx); | |
2927 | } | |
2928 | EXPORT_SYMBOL(lockdep_sta_mutex_held); | |
2929 | #endif |