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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 | ||
ba6ddab9 JB |
99 | static int link_sta_info_hash_del(struct ieee80211_local *local, |
100 | struct link_sta_info *link_sta) | |
101 | { | |
102 | return rhltable_remove(&local->link_sta_hash, | |
103 | &link_sta->link_hash_node, | |
104 | link_sta_rht_params); | |
105 | } | |
106 | ||
5108ca82 | 107 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 108 | { |
b22cfcfc EP |
109 | int ac, i; |
110 | struct tid_ampdu_tx *tid_tx; | |
111 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
112 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 113 | struct ps_data *ps; |
b22cfcfc | 114 | |
e3685e03 | 115 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
116 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
117 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
118 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
119 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
120 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
121 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
122 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
123 | else |
124 | return; | |
b22cfcfc EP |
125 | |
126 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 127 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 128 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 129 | |
d012a605 | 130 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
131 | } |
132 | ||
ba8c3d6f FF |
133 | if (sta->sta.txq[0]) { |
134 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
adf8ed01 JB |
135 | struct txq_info *txqi; |
136 | ||
137 | if (!sta->sta.txq[i]) | |
138 | continue; | |
139 | ||
140 | txqi = to_txq_info(sta->sta.txq[i]); | |
ba8c3d6f | 141 | |
fa962b92 | 142 | ieee80211_txq_purge(local, txqi); |
ba8c3d6f FF |
143 | } |
144 | } | |
145 | ||
b22cfcfc EP |
146 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
147 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
148 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
149 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
150 | } |
151 | ||
45b5028e TP |
152 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
153 | mesh_sta_cleanup(sta); | |
b22cfcfc | 154 | |
5ac2e350 | 155 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
156 | |
157 | /* | |
158 | * Destroy aggregation state here. It would be nice to wait for the | |
159 | * driver to finish aggregation stop and then clean up, but for now | |
160 | * drivers have to handle aggregation stop being requested, followed | |
161 | * directly by station destruction. | |
162 | */ | |
5a306f58 | 163 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 164 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
165 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
166 | if (!tid_tx) | |
167 | continue; | |
1f98ab7f | 168 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
169 | kfree(tid_tx); |
170 | } | |
5108ca82 | 171 | } |
b22cfcfc | 172 | |
5108ca82 JB |
173 | static void cleanup_single_sta(struct sta_info *sta) |
174 | { | |
175 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
176 | struct ieee80211_local *local = sdata->local; | |
177 | ||
178 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
179 | sta_info_free(local, sta); |
180 | } | |
181 | ||
83e7e4ce HX |
182 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
183 | const u8 *addr) | |
184 | { | |
185 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
186 | } | |
187 | ||
d0709a65 | 188 | /* protected by RCU */ |
abe60632 JB |
189 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
190 | const u8 *addr) | |
f0706e82 | 191 | { |
abe60632 | 192 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 193 | struct rhlist_head *tmp; |
60f4b626 | 194 | struct sta_info *sta; |
f0706e82 | 195 | |
60f4b626 | 196 | rcu_read_lock(); |
83e7e4ce | 197 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
198 | if (sta->sdata == sdata) { |
199 | rcu_read_unlock(); | |
200 | /* this is safe as the caller must already hold | |
201 | * another rcu read section or the mutex | |
202 | */ | |
203 | return sta; | |
204 | } | |
205 | } | |
206 | rcu_read_unlock(); | |
207 | return NULL; | |
43ba7e95 JB |
208 | } |
209 | ||
0e5ded5a FF |
210 | /* |
211 | * Get sta info either from the specified interface | |
212 | * or from one of its vlans | |
213 | */ | |
214 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
215 | const u8 *addr) | |
216 | { | |
217 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 218 | struct rhlist_head *tmp; |
0e5ded5a FF |
219 | struct sta_info *sta; |
220 | ||
7bedd0cf | 221 | rcu_read_lock(); |
83e7e4ce | 222 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
223 | if (sta->sdata == sdata || |
224 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
225 | rcu_read_unlock(); | |
226 | /* this is safe as the caller must already hold | |
227 | * another rcu read section or the mutex | |
228 | */ | |
229 | return sta; | |
230 | } | |
0e5ded5a | 231 | } |
7bedd0cf JB |
232 | rcu_read_unlock(); |
233 | return NULL; | |
0e5ded5a FF |
234 | } |
235 | ||
ba6ddab9 JB |
236 | struct rhlist_head *link_sta_info_hash_lookup(struct ieee80211_local *local, |
237 | const u8 *addr) | |
238 | { | |
239 | return rhltable_lookup(&local->link_sta_hash, addr, | |
240 | link_sta_rht_params); | |
241 | } | |
242 | ||
243 | struct link_sta_info * | |
244 | link_sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr) | |
245 | { | |
246 | struct ieee80211_local *local = sdata->local; | |
247 | struct rhlist_head *tmp; | |
248 | struct link_sta_info *link_sta; | |
249 | ||
250 | rcu_read_lock(); | |
251 | for_each_link_sta_info(local, addr, link_sta, tmp) { | |
252 | struct sta_info *sta = link_sta->sta; | |
253 | ||
254 | if (sta->sdata == sdata || | |
255 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
256 | rcu_read_unlock(); | |
257 | /* this is safe as the caller must already hold | |
258 | * another rcu read section or the mutex | |
259 | */ | |
260 | return link_sta; | |
261 | } | |
262 | } | |
263 | rcu_read_unlock(); | |
264 | return NULL; | |
265 | } | |
266 | ||
5072f73c THJ |
267 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
268 | const u8 *sta_addr, const u8 *vif_addr) | |
269 | { | |
270 | struct rhlist_head *tmp; | |
271 | struct sta_info *sta; | |
272 | ||
273 | for_each_sta_info(local, sta_addr, sta, tmp) { | |
274 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) | |
275 | return sta; | |
276 | } | |
277 | ||
278 | return NULL; | |
279 | } | |
280 | ||
3b53fde8 JB |
281 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
282 | int idx) | |
ee385855 | 283 | { |
3b53fde8 | 284 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
285 | struct sta_info *sta; |
286 | int i = 0; | |
287 | ||
8ca47eb9 MB |
288 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
289 | lockdep_is_held(&local->sta_mtx)) { | |
3b53fde8 | 290 | if (sdata != sta->sdata) |
2a8ca29a | 291 | continue; |
ee385855 LCC |
292 | if (i < idx) { |
293 | ++i; | |
294 | continue; | |
ee385855 | 295 | } |
2a8ca29a | 296 | return sta; |
ee385855 | 297 | } |
ee385855 LCC |
298 | |
299 | return NULL; | |
300 | } | |
f0706e82 | 301 | |
cb71f1d1 | 302 | static void sta_info_free_link(struct link_sta_info *link_sta) |
246b39e4 | 303 | { |
cb71f1d1 JB |
304 | free_percpu(link_sta->pcpu_rx_stats); |
305 | } | |
246b39e4 | 306 | |
ba6ddab9 JB |
307 | static void sta_remove_link(struct sta_info *sta, unsigned int link_id, |
308 | bool unhash) | |
cb71f1d1 JB |
309 | { |
310 | struct sta_link_alloc *alloc = NULL; | |
c71420db | 311 | struct link_sta_info *link_sta; |
246b39e4 | 312 | |
c71420db JB |
313 | link_sta = rcu_dereference_protected(sta->link[link_id], |
314 | lockdep_is_held(&sta->local->sta_mtx)); | |
315 | ||
316 | if (WARN_ON(!link_sta)) | |
cb71f1d1 JB |
317 | return; |
318 | ||
ba6ddab9 JB |
319 | if (unhash) |
320 | link_sta_info_hash_del(sta->local, link_sta); | |
321 | ||
c71420db JB |
322 | if (link_sta != &sta->deflink) |
323 | alloc = container_of(link_sta, typeof(*alloc), info); | |
cb71f1d1 JB |
324 | |
325 | sta->sta.valid_links &= ~BIT(link_id); | |
c71420db JB |
326 | RCU_INIT_POINTER(sta->link[link_id], NULL); |
327 | RCU_INIT_POINTER(sta->sta.link[link_id], NULL); | |
cb71f1d1 JB |
328 | if (alloc) { |
329 | sta_info_free_link(&alloc->info); | |
c71420db | 330 | kfree_rcu(alloc, rcu_head); |
246b39e4 JB |
331 | } |
332 | } | |
333 | ||
93e5deb1 | 334 | /** |
d9a7ddb0 | 335 | * sta_info_free - free STA |
93e5deb1 | 336 | * |
6ef307bc | 337 | * @local: pointer to the global information |
93e5deb1 JB |
338 | * @sta: STA info to free |
339 | * | |
340 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
341 | * that may happen before sta_info_insert(). It may only be |
342 | * called when sta_info_insert() has not been attempted (and | |
343 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 344 | */ |
d9a7ddb0 | 345 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 346 | { |
cb71f1d1 JB |
347 | int i; |
348 | ||
349 | for (i = 0; i < ARRAY_SIZE(sta->link); i++) { | |
350 | if (!(sta->sta.valid_links & BIT(i))) | |
351 | continue; | |
352 | ||
ba6ddab9 | 353 | sta_remove_link(sta, i, true); |
cb71f1d1 JB |
354 | } |
355 | ||
dcd479e1 JB |
356 | /* |
357 | * If we had used sta_info_pre_move_state() then we might not | |
358 | * have gone through the state transitions down again, so do | |
359 | * it here now (and warn if it's inserted). | |
360 | * | |
361 | * This will clear state such as fast TX/RX that may have been | |
362 | * allocated during state transitions. | |
363 | */ | |
364 | while (sta->sta_state > IEEE80211_STA_NONE) { | |
365 | int ret; | |
366 | ||
367 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
368 | ||
369 | ret = sta_info_move_state(sta, sta->sta_state - 1); | |
370 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) | |
371 | break; | |
372 | } | |
373 | ||
889cbb91 | 374 | if (sta->rate_ctrl) |
af65cd96 | 375 | rate_control_free_sta(sta); |
93e5deb1 | 376 | |
bdcbd8e0 | 377 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 378 | |
ba8c3d6f FF |
379 | if (sta->sta.txq[0]) |
380 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 381 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
382 | #ifdef CONFIG_MAC80211_MESH |
383 | kfree(sta->mesh); | |
384 | #endif | |
246b39e4 | 385 | |
cb71f1d1 | 386 | sta_info_free_link(&sta->deflink); |
93e5deb1 JB |
387 | kfree(sta); |
388 | } | |
389 | ||
4d33960b | 390 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
391 | static int sta_info_hash_add(struct ieee80211_local *local, |
392 | struct sta_info *sta) | |
f0706e82 | 393 | { |
83e7e4ce HX |
394 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
395 | sta_rht_params); | |
f0706e82 | 396 | } |
f0706e82 | 397 | |
5ac2e350 | 398 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
399 | { |
400 | struct sta_info *sta; | |
401 | ||
5ac2e350 | 402 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
403 | |
404 | if (sta->dead) | |
405 | return; | |
406 | ||
5ac2e350 JB |
407 | local_bh_disable(); |
408 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 409 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 410 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 411 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 412 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 413 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 414 | local_bh_enable(); |
af818581 JB |
415 | } |
416 | ||
af65cd96 JB |
417 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
418 | struct sta_info *sta, gfp_t gfp) | |
419 | { | |
30686bf7 | 420 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
421 | return 0; |
422 | ||
889cbb91 | 423 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 424 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 425 | sta, gfp); |
889cbb91 | 426 | if (!sta->rate_ctrl_priv) |
af65cd96 | 427 | return -ENOMEM; |
af65cd96 JB |
428 | |
429 | return 0; | |
430 | } | |
431 | ||
cb71f1d1 JB |
432 | static int sta_info_alloc_link(struct ieee80211_local *local, |
433 | struct link_sta_info *link_info, | |
434 | gfp_t gfp) | |
246b39e4 | 435 | { |
246b39e4 JB |
436 | struct ieee80211_hw *hw = &local->hw; |
437 | int i; | |
438 | ||
246b39e4 JB |
439 | if (ieee80211_hw_check(hw, USES_RSS)) { |
440 | link_info->pcpu_rx_stats = | |
441 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); | |
442 | if (!link_info->pcpu_rx_stats) | |
443 | return -ENOMEM; | |
444 | } | |
445 | ||
246b39e4 JB |
446 | link_info->rx_stats.last_rx = jiffies; |
447 | u64_stats_init(&link_info->rx_stats.syncp); | |
448 | ||
449 | ewma_signal_init(&link_info->rx_stats_avg.signal); | |
450 | ewma_avg_signal_init(&link_info->status_stats.avg_ack_signal); | |
451 | for (i = 0; i < ARRAY_SIZE(link_info->rx_stats_avg.chain_signal); i++) | |
452 | ewma_signal_init(&link_info->rx_stats_avg.chain_signal[i]); | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
cb71f1d1 JB |
457 | static void sta_info_add_link(struct sta_info *sta, |
458 | unsigned int link_id, | |
459 | struct link_sta_info *link_info, | |
460 | struct ieee80211_link_sta *link_sta) | |
461 | { | |
462 | link_info->sta = sta; | |
463 | link_info->link_id = link_id; | |
c71420db JB |
464 | link_info->pub = link_sta; |
465 | rcu_assign_pointer(sta->link[link_id], link_info); | |
466 | rcu_assign_pointer(sta->sta.link[link_id], link_sta); | |
cb71f1d1 JB |
467 | } |
468 | ||
73651ee6 | 469 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
cb71f1d1 | 470 | const u8 *addr, int link_id, gfp_t gfp) |
f0706e82 | 471 | { |
d0709a65 | 472 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 473 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 474 | struct sta_info *sta; |
16c5f15c | 475 | int i; |
f0706e82 | 476 | |
ba8c3d6f | 477 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 478 | if (!sta) |
73651ee6 | 479 | return NULL; |
f0706e82 | 480 | |
246b39e4 JB |
481 | sta->local = local; |
482 | sta->sdata = sdata; | |
483 | ||
cb71f1d1 | 484 | if (sta_info_alloc_link(local, &sta->deflink, gfp)) |
246b39e4 | 485 | return NULL; |
c9c5962b | 486 | |
cb71f1d1 JB |
487 | if (link_id >= 0) { |
488 | sta_info_add_link(sta, link_id, &sta->deflink, | |
489 | &sta->sta.deflink); | |
490 | sta->sta.valid_links = BIT(link_id); | |
491 | } else { | |
492 | sta_info_add_link(sta, 0, &sta->deflink, &sta->sta.deflink); | |
493 | } | |
494 | ||
07346f81 | 495 | spin_lock_init(&sta->lock); |
1d147bfa | 496 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 497 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 498 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 499 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 500 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
501 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
502 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
503 | if (!sta->mesh) | |
504 | goto free; | |
4c02d62f | 505 | sta->mesh->plink_sta = sta; |
433f5bc1 | 506 | spin_lock_init(&sta->mesh->plink_lock); |
45d33746 | 507 | if (!sdata->u.mesh.user_mpm) |
4c02d62f KC |
508 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
509 | 0); | |
433f5bc1 JB |
510 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
511 | } | |
87f59c70 | 512 | #endif |
07346f81 | 513 | |
ac100ce5 | 514 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 515 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
630c7e46 JB |
516 | memcpy(sta->deflink.addr, addr, ETH_ALEN); |
517 | memcpy(sta->sta.deflink.addr, addr, ETH_ALEN); | |
480dd46b MA |
518 | sta->sta.max_rx_aggregation_subframes = |
519 | local->hw.max_rx_aggregation_subframes; | |
520 | ||
046d2e7c S |
521 | /* TODO link specific alloc and assignments for MLO Link STA */ |
522 | ||
96fc6efb AW |
523 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
524 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
525 | * references to is not NULL. To not use the initial Rx-only key | |
526 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
527 | * which always will refer to a NULL key. | |
528 | */ | |
529 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
530 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
531 | ||
0f9c5a61 | 532 | |
3a11ce08 JB |
533 | ieee80211_init_frag_cache(&sta->frags); |
534 | ||
71ec375c JB |
535 | sta->sta_state = IEEE80211_STA_NONE; |
536 | ||
b6da911b LK |
537 | /* Mark TID as unreserved */ |
538 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
539 | ||
84b00607 | 540 | sta->last_connected = ktime_get_seconds(); |
541a45a1 | 541 | |
ba8c3d6f FF |
542 | if (local->ops->wake_tx_queue) { |
543 | void *txq_data; | |
544 | int size = sizeof(struct txq_info) + | |
545 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
546 | ||
547 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
548 | if (!txq_data) | |
549 | goto free; | |
550 | ||
551 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
552 | struct txq_info *txq = txq_data + i * size; | |
553 | ||
adf8ed01 | 554 | /* might not do anything for the bufferable MMPDU TXQ */ |
fa962b92 | 555 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 556 | } |
abfbc3af | 557 | } |
f0706e82 | 558 | |
ba8c3d6f FF |
559 | if (sta_prepare_rate_control(local, sta, gfp)) |
560 | goto free_txq; | |
561 | ||
942741da | 562 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
b4809e94 | 563 | |
948d887d JB |
564 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
565 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
566 | skb_queue_head_init(&sta->tx_filtered[i]); | |
942741da FF |
567 | sta->airtime[i].deficit = sta->airtime_weight; |
568 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); | |
569 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; | |
570 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; | |
948d887d | 571 | } |
73651ee6 | 572 | |
5a306f58 | 573 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 574 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 575 | |
bd718fc1 JB |
576 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
577 | u32 mandatory = 0; | |
578 | int r; | |
579 | ||
580 | if (!hw->wiphy->bands[i]) | |
581 | continue; | |
582 | ||
583 | switch (i) { | |
584 | case NL80211_BAND_2GHZ: | |
63fa0426 | 585 | case NL80211_BAND_LC: |
bd718fc1 JB |
586 | /* |
587 | * We use both here, even if we cannot really know for | |
588 | * sure the station will support both, but the only use | |
589 | * for this is when we don't know anything yet and send | |
590 | * management frames, and then we'll pick the lowest | |
591 | * possible rate anyway. | |
592 | * If we don't include _G here, we cannot find a rate | |
593 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
594 | */ | |
595 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
596 | IEEE80211_RATE_MANDATORY_G; | |
597 | break; | |
598 | case NL80211_BAND_5GHZ: | |
599 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
600 | break; | |
601 | case NL80211_BAND_60GHZ: | |
602 | WARN_ON(1); | |
603 | mandatory = 0; | |
604 | break; | |
605 | } | |
606 | ||
607 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
608 | struct ieee80211_rate *rate; | |
609 | ||
610 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
611 | ||
612 | if (!(rate->flags & mandatory)) | |
613 | continue; | |
046d2e7c | 614 | sta->sta.deflink.supp_rates[i] |= BIT(r); |
bd718fc1 JB |
615 | } |
616 | } | |
617 | ||
af0ed69b | 618 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
6e0456b5 FF |
619 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
620 | ||
484a54c2 THJ |
621 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
622 | sta->cparams.target = MS2TIME(20); | |
623 | sta->cparams.interval = MS2TIME(100); | |
624 | sta->cparams.ecn = true; | |
dfcb63ce THJ |
625 | sta->cparams.ce_threshold_selector = 0; |
626 | sta->cparams.ce_threshold_mask = 0; | |
484a54c2 | 627 | |
bdcbd8e0 | 628 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 629 | |
abfbc3af | 630 | return sta; |
ba8c3d6f FF |
631 | |
632 | free_txq: | |
633 | if (sta->sta.txq[0]) | |
634 | kfree(to_txq_info(sta->sta.txq[0])); | |
635 | free: | |
cb71f1d1 | 636 | sta_info_free_link(&sta->deflink); |
433f5bc1 JB |
637 | #ifdef CONFIG_MAC80211_MESH |
638 | kfree(sta->mesh); | |
639 | #endif | |
ba8c3d6f FF |
640 | kfree(sta); |
641 | return NULL; | |
73651ee6 JB |
642 | } |
643 | ||
8c71df7a | 644 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 645 | { |
34e89507 | 646 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 647 | |
03e4497e JB |
648 | /* |
649 | * Can't be a WARN_ON because it can be triggered through a race: | |
650 | * something inserts a STA (on one CPU) without holding the RTNL | |
651 | * and another CPU turns off the net device. | |
652 | */ | |
8c71df7a GE |
653 | if (unlikely(!ieee80211_sdata_running(sdata))) |
654 | return -ENETDOWN; | |
03e4497e | 655 | |
b203ca39 | 656 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
deebea0a | 657 | !is_valid_ether_addr(sta->sta.addr))) |
8c71df7a GE |
658 | return -EINVAL; |
659 | ||
83e7e4ce HX |
660 | /* The RCU read lock is required by rhashtable due to |
661 | * asynchronous resize/rehash. We also require the mutex | |
662 | * for correctness. | |
31104891 JB |
663 | */ |
664 | rcu_read_lock(); | |
665 | lockdep_assert_held(&sdata->local->sta_mtx); | |
666 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
667 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
668 | rcu_read_unlock(); | |
669 | return -ENOTUNIQ; | |
670 | } | |
671 | rcu_read_unlock(); | |
672 | ||
8c71df7a GE |
673 | return 0; |
674 | } | |
675 | ||
f09603a2 JB |
676 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
677 | struct ieee80211_sub_if_data *sdata, | |
678 | struct sta_info *sta) | |
679 | { | |
680 | enum ieee80211_sta_state state; | |
681 | int err = 0; | |
682 | ||
683 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
684 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
685 | if (err) | |
686 | break; | |
687 | } | |
688 | ||
689 | if (!err) { | |
a4ec45a4 JB |
690 | /* |
691 | * Drivers using legacy sta_add/sta_remove callbacks only | |
692 | * get uploaded set to true after sta_add is called. | |
693 | */ | |
694 | if (!local->ops->sta_add) | |
695 | sta->uploaded = true; | |
f09603a2 JB |
696 | return 0; |
697 | } | |
698 | ||
699 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
700 | sdata_info(sdata, |
701 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
702 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
703 | err = 0; |
704 | } | |
705 | ||
706 | /* unwind on error */ | |
707 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
708 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
709 | ||
710 | return err; | |
711 | } | |
712 | ||
d405fd8c GG |
713 | static void |
714 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
715 | { | |
716 | struct ieee80211_local *local = sdata->local; | |
717 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
718 | struct sta_info *sta; | |
719 | ||
720 | rcu_read_lock(); | |
721 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
722 | if (sdata != sta->sdata || | |
723 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
724 | continue; | |
725 | if (!sta->sta.support_p2p_ps) { | |
726 | allow_p2p_go_ps = false; | |
727 | break; | |
728 | } | |
729 | } | |
730 | rcu_read_unlock(); | |
731 | ||
732 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
733 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
d8675a63 JB |
734 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
735 | BSS_CHANGED_P2P_PS); | |
d405fd8c GG |
736 | } |
737 | } | |
738 | ||
8c71df7a GE |
739 | /* |
740 | * should be called with sta_mtx locked | |
741 | * this function replaces the mutex lock | |
742 | * with a RCU lock | |
743 | */ | |
4d33960b | 744 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
745 | { |
746 | struct ieee80211_local *local = sta->local; | |
747 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 748 | struct station_info *sinfo = NULL; |
8c71df7a GE |
749 | int err = 0; |
750 | ||
751 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 752 | |
7852e361 JB |
753 | /* check if STA exists already */ |
754 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
755 | err = -EEXIST; | |
8f9dcc29 | 756 | goto out_cleanup; |
4d33960b | 757 | } |
32bfd35d | 758 | |
0c2e3842 KV |
759 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
760 | if (!sinfo) { | |
761 | err = -ENOMEM; | |
8f9dcc29 | 762 | goto out_cleanup; |
0c2e3842 KV |
763 | } |
764 | ||
7852e361 JB |
765 | local->num_sta++; |
766 | local->sta_generation++; | |
767 | smp_mb(); | |
4d33960b | 768 | |
5108ca82 JB |
769 | /* simplify things and don't accept BA sessions yet */ |
770 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
771 | ||
7852e361 | 772 | /* make the station visible */ |
62b14b24 JB |
773 | err = sta_info_hash_add(local, sta); |
774 | if (err) | |
775 | goto out_drop_sta; | |
83d5cc01 | 776 | |
2bad7748 | 777 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 778 | |
4dde3c36 MG |
779 | /* update channel context before notifying the driver about state |
780 | * change, this enables driver using the updated channel context right away. | |
781 | */ | |
782 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
0cbf348a | 783 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
4dde3c36 MG |
784 | if (!sta->sta.support_p2p_ps) |
785 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
786 | } | |
787 | ||
5108ca82 JB |
788 | /* notify driver */ |
789 | err = sta_info_insert_drv_state(local, sdata, sta); | |
790 | if (err) | |
791 | goto out_remove; | |
792 | ||
7852e361 | 793 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c | 794 | |
5108ca82 JB |
795 | /* accept BA sessions now */ |
796 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 797 | |
7852e361 JB |
798 | ieee80211_sta_debugfs_add(sta); |
799 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 800 | |
0ef049dc AB |
801 | sinfo->generation = local->sta_generation; |
802 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
803 | kfree(sinfo); | |
d0709a65 | 804 | |
bdcbd8e0 | 805 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 806 | |
34e89507 JB |
807 | /* move reference to rcu-protected */ |
808 | rcu_read_lock(); | |
809 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 810 | |
73651ee6 JB |
811 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
812 | mesh_accept_plinks_update(sdata); | |
813 | ||
8c71df7a | 814 | return 0; |
5108ca82 JB |
815 | out_remove: |
816 | sta_info_hash_del(local, sta); | |
817 | list_del_rcu(&sta->list); | |
62b14b24 | 818 | out_drop_sta: |
5108ca82 JB |
819 | local->num_sta--; |
820 | synchronize_net(); | |
8f9dcc29 | 821 | out_cleanup: |
7bc40aed | 822 | cleanup_single_sta(sta); |
4d33960b | 823 | mutex_unlock(&local->sta_mtx); |
ea32f065 | 824 | kfree(sinfo); |
4d33960b JB |
825 | rcu_read_lock(); |
826 | return err; | |
8c71df7a GE |
827 | } |
828 | ||
829 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
830 | { | |
831 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 832 | int err; |
8c71df7a | 833 | |
4d33960b JB |
834 | might_sleep(); |
835 | ||
31104891 JB |
836 | mutex_lock(&local->sta_mtx); |
837 | ||
8c71df7a GE |
838 | err = sta_info_insert_check(sta); |
839 | if (err) { | |
7bc40aed | 840 | sta_info_free(local, sta); |
31104891 | 841 | mutex_unlock(&local->sta_mtx); |
8c71df7a | 842 | rcu_read_lock(); |
7bc40aed | 843 | return err; |
8c71df7a GE |
844 | } |
845 | ||
7bc40aed | 846 | return sta_info_insert_finish(sta); |
f0706e82 JB |
847 | } |
848 | ||
34e89507 JB |
849 | int sta_info_insert(struct sta_info *sta) |
850 | { | |
851 | int err = sta_info_insert_rcu(sta); | |
852 | ||
853 | rcu_read_unlock(); | |
854 | ||
855 | return err; | |
856 | } | |
857 | ||
d012a605 | 858 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
859 | { |
860 | /* | |
861 | * This format has been mandated by the IEEE specifications, | |
862 | * so this line may not be changed to use the __set_bit() format. | |
863 | */ | |
d012a605 | 864 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
865 | } |
866 | ||
d012a605 | 867 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
868 | { |
869 | /* | |
870 | * This format has been mandated by the IEEE specifications, | |
871 | * so this line may not be changed to use the __clear_bit() format. | |
872 | */ | |
d012a605 | 873 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
874 | } |
875 | ||
3d5839b6 IP |
876 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
877 | { | |
878 | /* | |
879 | * This format has been mandated by the IEEE specifications, | |
880 | * so this line may not be changed to use the test_bit() format. | |
881 | */ | |
882 | return tim[id / 8] & (1 << (id % 8)); | |
883 | } | |
884 | ||
948d887d | 885 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 886 | { |
948d887d JB |
887 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
888 | switch (ac) { | |
889 | case IEEE80211_AC_VO: | |
890 | return BIT(6) | BIT(7); | |
891 | case IEEE80211_AC_VI: | |
892 | return BIT(4) | BIT(5); | |
893 | case IEEE80211_AC_BE: | |
894 | return BIT(0) | BIT(3); | |
895 | case IEEE80211_AC_BK: | |
896 | return BIT(1) | BIT(2); | |
897 | default: | |
898 | WARN_ON(1); | |
899 | return 0; | |
d0709a65 | 900 | } |
004c872e JB |
901 | } |
902 | ||
9b7a86f3 | 903 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 904 | { |
c868cb35 | 905 | struct ieee80211_local *local = sta->local; |
d012a605 | 906 | struct ps_data *ps; |
948d887d JB |
907 | bool indicate_tim = false; |
908 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
909 | int ac; | |
a69bd8e6 | 910 | u16 id = sta->sta.aid; |
d012a605 MP |
911 | |
912 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
913 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
914 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
915 | return; | |
004c872e | 916 | |
d012a605 | 917 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
918 | #ifdef CONFIG_MAC80211_MESH |
919 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
920 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 921 | #endif |
d012a605 | 922 | } else { |
c868cb35 | 923 | return; |
d012a605 | 924 | } |
3e122be0 | 925 | |
c868cb35 | 926 | /* No need to do anything if the driver does all */ |
d98937f4 | 927 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 928 | return; |
004c872e | 929 | |
c868cb35 JB |
930 | if (sta->dead) |
931 | goto done; | |
3e122be0 | 932 | |
948d887d JB |
933 | /* |
934 | * If all ACs are delivery-enabled then we should build | |
935 | * the TIM bit for all ACs anyway; if only some are then | |
936 | * we ignore those and build the TIM bit using only the | |
937 | * non-enabled ones. | |
938 | */ | |
939 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
940 | ignore_for_tim = 0; | |
941 | ||
9b7a86f3 JB |
942 | if (ignore_pending) |
943 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
944 | ||
948d887d JB |
945 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
946 | unsigned long tids; | |
3e122be0 | 947 | |
f438ceb8 | 948 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
949 | continue; |
950 | ||
951 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
952 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
953 | if (indicate_tim) | |
954 | break; | |
3e122be0 | 955 | |
948d887d JB |
956 | tids = ieee80211_tids_for_ac(ac); |
957 | ||
958 | indicate_tim |= | |
959 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
960 | indicate_tim |= |
961 | sta->txq_buffered_tids & tids; | |
d0709a65 | 962 | } |
004c872e | 963 | |
c868cb35 | 964 | done: |
65f704a5 | 965 | spin_lock_bh(&local->tim_lock); |
004c872e | 966 | |
3d5839b6 IP |
967 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
968 | goto out_unlock; | |
969 | ||
948d887d | 970 | if (indicate_tim) |
d012a605 | 971 | __bss_tim_set(ps->tim, id); |
c868cb35 | 972 | else |
d012a605 | 973 | __bss_tim_clear(ps->tim, id); |
004c872e | 974 | |
9b7a86f3 | 975 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 976 | local->tim_in_locked_section = true; |
948d887d | 977 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
978 | local->tim_in_locked_section = false; |
979 | } | |
3e122be0 | 980 | |
3d5839b6 | 981 | out_unlock: |
65f704a5 | 982 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
983 | } |
984 | ||
9b7a86f3 JB |
985 | void sta_info_recalc_tim(struct sta_info *sta) |
986 | { | |
987 | __sta_info_recalc_tim(sta, false); | |
988 | } | |
989 | ||
cd0b8d89 | 990 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 991 | { |
e039fa4a | 992 | struct ieee80211_tx_info *info; |
f0706e82 JB |
993 | int timeout; |
994 | ||
995 | if (!skb) | |
cd0b8d89 | 996 | return false; |
f0706e82 | 997 | |
e039fa4a | 998 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
999 | |
1000 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
1001 | timeout = (sta->listen_interval * |
1002 | sta->sdata->vif.bss_conf.beacon_int * | |
1003 | 32 / 15625) * HZ; | |
f0706e82 JB |
1004 | if (timeout < STA_TX_BUFFER_EXPIRE) |
1005 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 1006 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
1007 | } |
1008 | ||
1009 | ||
948d887d JB |
1010 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
1011 | struct sta_info *sta, int ac) | |
f0706e82 JB |
1012 | { |
1013 | unsigned long flags; | |
1014 | struct sk_buff *skb; | |
1015 | ||
60750397 JB |
1016 | /* |
1017 | * First check for frames that should expire on the filtered | |
1018 | * queue. Frames here were rejected by the driver and are on | |
1019 | * a separate queue to avoid reordering with normal PS-buffered | |
1020 | * frames. They also aren't accounted for right now in the | |
1021 | * total_ps_buffered counter. | |
1022 | */ | |
1023 | for (;;) { | |
948d887d JB |
1024 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
1025 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 1026 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1027 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
1028 | else |
1029 | skb = NULL; | |
948d887d | 1030 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
1031 | |
1032 | /* | |
1033 | * Frames are queued in order, so if this one | |
1034 | * hasn't expired yet we can stop testing. If | |
1035 | * we actually reached the end of the queue we | |
1036 | * also need to stop, of course. | |
1037 | */ | |
1038 | if (!skb) | |
1039 | break; | |
d4fa14cd | 1040 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
1041 | } |
1042 | ||
1043 | /* | |
1044 | * Now also check the normal PS-buffered queue, this will | |
1045 | * only find something if the filtered queue was emptied | |
1046 | * since the filtered frames are all before the normal PS | |
1047 | * buffered frames. | |
1048 | */ | |
f0706e82 | 1049 | for (;;) { |
948d887d JB |
1050 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
1051 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 1052 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 1053 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 1054 | else |
f0706e82 | 1055 | skb = NULL; |
948d887d | 1056 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 1057 | |
60750397 JB |
1058 | /* |
1059 | * frames are queued in order, so if this one | |
1060 | * hasn't expired yet (or we reached the end of | |
1061 | * the queue) we can stop testing | |
1062 | */ | |
836341a7 | 1063 | if (!skb) |
f0706e82 | 1064 | break; |
836341a7 | 1065 | |
836341a7 | 1066 | local->total_ps_buffered--; |
bdcbd8e0 JB |
1067 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
1068 | sta->sta.addr); | |
d4fa14cd | 1069 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 1070 | } |
3393a608 | 1071 | |
60750397 JB |
1072 | /* |
1073 | * Finally, recalculate the TIM bit for this station -- it might | |
1074 | * now be clear because the station was too slow to retrieve its | |
1075 | * frames. | |
1076 | */ | |
1077 | sta_info_recalc_tim(sta); | |
1078 | ||
1079 | /* | |
1080 | * Return whether there are any frames still buffered, this is | |
1081 | * used to check whether the cleanup timer still needs to run, | |
1082 | * if there are no frames we don't need to rearm the timer. | |
1083 | */ | |
948d887d JB |
1084 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
1085 | skb_queue_empty(&sta->tx_filtered[ac])); | |
1086 | } | |
1087 | ||
1088 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
1089 | struct sta_info *sta) | |
1090 | { | |
1091 | bool have_buffered = false; | |
1092 | int ac; | |
1093 | ||
3f52b7e3 MP |
1094 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
1095 | if (!sta->sdata->bss && | |
1096 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
1097 | return false; |
1098 | ||
1099 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1100 | have_buffered |= | |
1101 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
1102 | ||
1103 | return have_buffered; | |
f0706e82 JB |
1104 | } |
1105 | ||
d778207b | 1106 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 1107 | { |
34e89507 JB |
1108 | struct ieee80211_local *local; |
1109 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 1110 | int ret; |
f0706e82 | 1111 | |
34e89507 | 1112 | might_sleep(); |
f0706e82 | 1113 | |
34e89507 JB |
1114 | if (!sta) |
1115 | return -ENOENT; | |
5bb644a0 | 1116 | |
34e89507 JB |
1117 | local = sta->local; |
1118 | sdata = sta->sdata; | |
f0706e82 | 1119 | |
83d5cc01 JB |
1120 | lockdep_assert_held(&local->sta_mtx); |
1121 | ||
098a6070 JB |
1122 | /* |
1123 | * Before removing the station from the driver and | |
1124 | * rate control, it might still start new aggregation | |
1125 | * sessions -- block that to make sure the tear-down | |
1126 | * will be sufficient. | |
1127 | */ | |
c2c98fde | 1128 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1129 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1130 | |
f59374eb SS |
1131 | /* |
1132 | * Before removing the station from the driver there might be pending | |
1133 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1134 | * all such frames to be processed. | |
1135 | */ | |
1136 | drv_sync_rx_queues(local, sta); | |
1137 | ||
34e89507 | 1138 | ret = sta_info_hash_del(local, sta); |
b01711be | 1139 | if (WARN_ON(ret)) |
34e89507 JB |
1140 | return ret; |
1141 | ||
a7a6bdd0 AN |
1142 | /* |
1143 | * for TDLS peers, make sure to return to the base channel before | |
1144 | * removal. | |
1145 | */ | |
1146 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1147 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1148 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1149 | } | |
1150 | ||
794454ce | 1151 | list_del_rcu(&sta->list); |
ef044763 | 1152 | sta->removed = true; |
4d33960b | 1153 | |
6a9d1b91 JB |
1154 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
1155 | ||
a710c816 JB |
1156 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1157 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1158 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1159 | ||
d778207b JB |
1160 | return 0; |
1161 | } | |
1162 | ||
1163 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1164 | { | |
1165 | struct ieee80211_local *local = sta->local; | |
1166 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1167 | struct station_info *sinfo; |
d778207b JB |
1168 | int ret; |
1169 | ||
1170 | /* | |
1171 | * NOTE: This assumes at least synchronize_net() was done | |
1172 | * after _part1 and before _part2! | |
1173 | */ | |
1174 | ||
1175 | might_sleep(); | |
1176 | lockdep_assert_held(&local->sta_mtx); | |
1177 | ||
5981fe5b | 1178 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
b16798f5 JB |
1179 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
1180 | WARN_ON_ONCE(ret); | |
1181 | } | |
1182 | ||
c8782078 | 1183 | /* now keys can no longer be reached */ |
6d10e46b | 1184 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1185 | |
9b7a86f3 JB |
1186 | /* disable TIM bit - last chance to tell driver */ |
1187 | __sta_info_recalc_tim(sta, true); | |
1188 | ||
34e89507 JB |
1189 | sta->dead = true; |
1190 | ||
34e89507 JB |
1191 | local->num_sta--; |
1192 | local->sta_generation++; | |
1193 | ||
83d5cc01 | 1194 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1195 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1196 | if (ret) { | |
83d5cc01 JB |
1197 | WARN_ON_ONCE(1); |
1198 | break; | |
1199 | } | |
1200 | } | |
d9a7ddb0 | 1201 | |
f09603a2 | 1202 | if (sta->uploaded) { |
f09603a2 JB |
1203 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1204 | IEEE80211_STA_NOTEXIST); | |
1205 | WARN_ON_ONCE(ret != 0); | |
1206 | } | |
34e89507 | 1207 | |
bdcbd8e0 JB |
1208 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1209 | ||
0ef049dc AB |
1210 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1211 | if (sinfo) | |
0fdf1493 | 1212 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1213 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1214 | kfree(sinfo); | |
ec15e68b | 1215 | |
34e89507 JB |
1216 | ieee80211_sta_debugfs_remove(sta); |
1217 | ||
3a11ce08 JB |
1218 | ieee80211_destroy_frag_cache(&sta->frags); |
1219 | ||
d34ba216 | 1220 | cleanup_single_sta(sta); |
d778207b JB |
1221 | } |
1222 | ||
1223 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1224 | { | |
1225 | int err = __sta_info_destroy_part1(sta); | |
1226 | ||
1227 | if (err) | |
1228 | return err; | |
1229 | ||
1230 | synchronize_net(); | |
1231 | ||
1232 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1233 | |
1234 | return 0; | |
4d6141c3 JS |
1235 | } |
1236 | ||
34e89507 | 1237 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1238 | { |
34e89507 JB |
1239 | struct sta_info *sta; |
1240 | int ret; | |
4d6141c3 | 1241 | |
34e89507 | 1242 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1243 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1244 | ret = __sta_info_destroy(sta); |
1245 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1246 | |
1247 | return ret; | |
1248 | } | |
1249 | ||
34e89507 JB |
1250 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1251 | const u8 *addr) | |
e9f207f0 | 1252 | { |
34e89507 JB |
1253 | struct sta_info *sta; |
1254 | int ret; | |
e9f207f0 | 1255 | |
34e89507 | 1256 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1257 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1258 | ret = __sta_info_destroy(sta); |
1259 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1260 | |
34e89507 JB |
1261 | return ret; |
1262 | } | |
e9f207f0 | 1263 | |
34f11cd3 | 1264 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1265 | { |
34f11cd3 | 1266 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1267 | struct sta_info *sta; |
3393a608 | 1268 | bool timer_needed = false; |
34e89507 JB |
1269 | |
1270 | rcu_read_lock(); | |
1271 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1272 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1273 | timer_needed = true; | |
34e89507 | 1274 | rcu_read_unlock(); |
e9f207f0 | 1275 | |
34e89507 JB |
1276 | if (local->quiescing) |
1277 | return; | |
d0709a65 | 1278 | |
3393a608 JO |
1279 | if (!timer_needed) |
1280 | return; | |
1281 | ||
26d59535 JB |
1282 | mod_timer(&local->sta_cleanup, |
1283 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1284 | } |
e9f207f0 | 1285 | |
7bedd0cf JB |
1286 | int sta_info_init(struct ieee80211_local *local) |
1287 | { | |
1288 | int err; | |
1289 | ||
83e7e4ce | 1290 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1291 | if (err) |
1292 | return err; | |
1293 | ||
ba6ddab9 JB |
1294 | err = rhltable_init(&local->link_sta_hash, &link_sta_rht_params); |
1295 | if (err) { | |
1296 | rhltable_destroy(&local->sta_hash); | |
1297 | return err; | |
1298 | } | |
1299 | ||
4d33960b | 1300 | spin_lock_init(&local->tim_lock); |
34e89507 | 1301 | mutex_init(&local->sta_mtx); |
f0706e82 | 1302 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1303 | |
34f11cd3 | 1304 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1305 | return 0; |
f0706e82 JB |
1306 | } |
1307 | ||
1308 | void sta_info_stop(struct ieee80211_local *local) | |
1309 | { | |
a56f992c | 1310 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1311 | rhltable_destroy(&local->sta_hash); |
ba6ddab9 | 1312 | rhltable_destroy(&local->link_sta_hash); |
f0706e82 JB |
1313 | } |
1314 | ||
051007d9 | 1315 | |
e716251d | 1316 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1317 | { |
b998e8bb | 1318 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1319 | struct sta_info *sta, *tmp; |
d778207b | 1320 | LIST_HEAD(free_list); |
44213b5e | 1321 | int ret = 0; |
f0706e82 | 1322 | |
d0709a65 | 1323 | might_sleep(); |
be8755e1 | 1324 | |
e716251d JB |
1325 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1326 | WARN_ON(vlans && !sdata->bss); | |
1327 | ||
34e89507 | 1328 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1329 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1330 | if (sdata == sta->sdata || |
1331 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1332 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1333 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1334 | ret++; |
1335 | } | |
be8755e1 | 1336 | } |
d778207b JB |
1337 | |
1338 | if (!list_empty(&free_list)) { | |
1339 | synchronize_net(); | |
1340 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1341 | __sta_info_destroy_part2(sta); | |
1342 | } | |
34e89507 | 1343 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1344 | |
051007d9 JB |
1345 | return ret; |
1346 | } | |
1347 | ||
24723d1b JB |
1348 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1349 | unsigned long exp_time) | |
1350 | { | |
1351 | struct ieee80211_local *local = sdata->local; | |
1352 | struct sta_info *sta, *tmp; | |
24723d1b | 1353 | |
34e89507 | 1354 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1355 | |
1356 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1357 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1358 | ||
ec2b774e ML |
1359 | if (sdata != sta->sdata) |
1360 | continue; | |
1361 | ||
b8da6b6a | 1362 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1363 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1364 | sta->sta.addr); | |
3f52b7e3 MP |
1365 | |
1366 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1367 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1368 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1369 | ||
34e89507 | 1370 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1371 | } |
e46a2cf9 MSS |
1372 | } |
1373 | ||
34e89507 | 1374 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1375 | } |
17741cdc | 1376 | |
686b9cb9 | 1377 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1378 | const u8 *addr, |
1379 | const u8 *localaddr) | |
17741cdc | 1380 | { |
7bedd0cf | 1381 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1382 | struct rhlist_head *tmp; |
7bedd0cf | 1383 | struct sta_info *sta; |
17741cdc | 1384 | |
686b9cb9 BG |
1385 | /* |
1386 | * Just return a random station if localaddr is NULL | |
1387 | * ... first in list. | |
1388 | */ | |
83e7e4ce | 1389 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1390 | if (localaddr && |
b203ca39 | 1391 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1392 | continue; |
f7c65594 JB |
1393 | if (!sta->uploaded) |
1394 | return NULL; | |
abe60632 | 1395 | return &sta->sta; |
f7c65594 JB |
1396 | } |
1397 | ||
abe60632 | 1398 | return NULL; |
17741cdc | 1399 | } |
686b9cb9 | 1400 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1401 | |
1402 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1403 | const u8 *addr) | |
1404 | { | |
f7c65594 | 1405 | struct sta_info *sta; |
5ed176e1 JB |
1406 | |
1407 | if (!vif) | |
1408 | return NULL; | |
1409 | ||
f7c65594 JB |
1410 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1411 | if (!sta) | |
1412 | return NULL; | |
1413 | ||
1414 | if (!sta->uploaded) | |
1415 | return NULL; | |
5ed176e1 | 1416 | |
f7c65594 | 1417 | return &sta->sta; |
5ed176e1 | 1418 | } |
17741cdc | 1419 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1420 | |
e3685e03 JB |
1421 | /* powersave support code */ |
1422 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1423 | { |
608383bf | 1424 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1425 | struct ieee80211_local *local = sdata->local; |
1426 | struct sk_buff_head pending; | |
ba8c3d6f | 1427 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1428 | unsigned long flags; |
d012a605 MP |
1429 | struct ps_data *ps; |
1430 | ||
3918edb0 FF |
1431 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1432 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1433 | u.ap); | |
1434 | ||
1435 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1436 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1437 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1438 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1439 | else |
1440 | return; | |
50a9432d | 1441 | |
c2c98fde | 1442 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1443 | |
5a306f58 | 1444 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1445 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1446 | sta->txq_buffered_tids = 0; |
af818581 | 1447 | |
30686bf7 | 1448 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1449 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1450 | |
adf8ed01 JB |
1451 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1452 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1453 | continue; | |
ba8c3d6f | 1454 | |
18667600 | 1455 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1456 | } |
1457 | ||
948d887d | 1458 | skb_queue_head_init(&pending); |
af818581 | 1459 | |
1d147bfa EG |
1460 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1461 | spin_lock(&sta->ps_lock); | |
af818581 | 1462 | /* Send all buffered frames to the station */ |
948d887d JB |
1463 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1464 | int count = skb_queue_len(&pending), tmp; | |
1465 | ||
987c285c | 1466 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1467 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1468 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1469 | tmp = skb_queue_len(&pending); |
1470 | filtered += tmp - count; | |
1471 | count = tmp; | |
1472 | ||
987c285c | 1473 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1474 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1475 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1476 | tmp = skb_queue_len(&pending); |
1477 | buffered += tmp - count; | |
1478 | } | |
1479 | ||
e3685e03 | 1480 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1481 | |
1482 | /* now we're no longer in the deliver code */ | |
1483 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1484 | ||
1485 | /* The station might have polled and then woken up before we responded, | |
1486 | * so clear these flags now to avoid them sticking around. | |
1487 | */ | |
1488 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1489 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1490 | spin_unlock(&sta->ps_lock); |
948d887d | 1491 | |
e3685e03 JB |
1492 | atomic_dec(&ps->num_sta_ps); |
1493 | ||
af818581 JB |
1494 | local->total_ps_buffered -= buffered; |
1495 | ||
c868cb35 JB |
1496 | sta_info_recalc_tim(sta); |
1497 | ||
bdcbd8e0 | 1498 | ps_dbg(sdata, |
2595d259 | 1499 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1500 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1501 | |
1502 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1503 | } |
1504 | ||
0ead2510 | 1505 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1506 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1507 | bool call_driver, bool more_data) |
af818581 | 1508 | { |
0ead2510 | 1509 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1510 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1511 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1512 | struct sk_buff *skb; |
ce662b44 JB |
1513 | int size = sizeof(*nullfunc); |
1514 | __le16 fc; | |
a74a8c84 | 1515 | bool qos = sta->sta.wme; |
ce662b44 | 1516 | struct ieee80211_tx_info *info; |
55de908a | 1517 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1518 | |
ce662b44 JB |
1519 | if (qos) { |
1520 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1521 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1522 | IEEE80211_FCTL_FROMDS); | |
1523 | } else { | |
1524 | size -= 2; | |
1525 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1526 | IEEE80211_STYPE_NULLFUNC | | |
1527 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1528 | } |
af818581 | 1529 | |
ce662b44 JB |
1530 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1531 | if (!skb) | |
1532 | return; | |
1533 | ||
1534 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1535 | ||
4df864c1 | 1536 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1537 | nullfunc->frame_control = fc; |
1538 | nullfunc->duration_id = 0; | |
1539 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1540 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1541 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1542 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1543 | |
59b66255 JB |
1544 | skb->priority = tid; |
1545 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1546 | if (qos) { |
ce662b44 JB |
1547 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1548 | ||
0ead2510 | 1549 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1550 | nullfunc->qos_ctrl |= |
1551 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1552 | if (more_data) |
1553 | nullfunc->frame_control |= | |
1554 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1555 | } | |
ce662b44 JB |
1556 | } |
1557 | ||
1558 | info = IEEE80211_SKB_CB(skb); | |
1559 | ||
1560 | /* | |
1561 | * Tell TX path to send this frame even though the | |
1562 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1563 | * exchange. Also set EOSP to indicate this packet |
1564 | * ends the poll/service period. | |
ce662b44 | 1565 | */ |
02f2f1a9 | 1566 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1567 | IEEE80211_TX_STATUS_EOSP | |
1568 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1569 | |
6b127c71 SM |
1570 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1571 | ||
b77cf4f8 JB |
1572 | if (call_driver) |
1573 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1574 | reason, false); | |
40b96408 | 1575 | |
89afe614 JB |
1576 | skb->dev = sdata->dev; |
1577 | ||
55de908a | 1578 | rcu_read_lock(); |
d0a9123e | 1579 | chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
55de908a JB |
1580 | if (WARN_ON(!chanctx_conf)) { |
1581 | rcu_read_unlock(); | |
1582 | kfree_skb(skb); | |
1583 | return; | |
1584 | } | |
1585 | ||
73c4e195 | 1586 | info->band = chanctx_conf->def.chan->band; |
08aca29a | 1587 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1588 | rcu_read_unlock(); |
ce662b44 JB |
1589 | } |
1590 | ||
0a1cb809 JB |
1591 | static int find_highest_prio_tid(unsigned long tids) |
1592 | { | |
1593 | /* lower 3 TIDs aren't ordered perfectly */ | |
1594 | if (tids & 0xF8) | |
1595 | return fls(tids) - 1; | |
1596 | /* TID 0 is BE just like TID 3 */ | |
1597 | if (tids & BIT(0)) | |
1598 | return 0; | |
1599 | return fls(tids) - 1; | |
1600 | } | |
1601 | ||
0ead2510 EG |
1602 | /* Indicates if the MORE_DATA bit should be set in the last |
1603 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1604 | * Note that driver_release_tids is relevant only if | |
1605 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1606 | */ | |
1607 | static bool | |
1608 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1609 | enum ieee80211_frame_release_type reason, | |
1610 | unsigned long driver_release_tids) | |
1611 | { | |
1612 | int ac; | |
1613 | ||
1614 | /* If the driver has data on more than one TID then | |
1615 | * certainly there's more data if we release just a | |
1616 | * single frame now (from a single TID). This will | |
1617 | * only happen for PS-Poll. | |
1618 | */ | |
1619 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1620 | hweight16(driver_release_tids) > 1) | |
1621 | return true; | |
1622 | ||
1623 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1624 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1625 | continue; |
1626 | ||
1627 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1628 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1629 | return true; | |
1630 | } | |
1631 | ||
1632 | return false; | |
1633 | } | |
1634 | ||
47086fc5 | 1635 | static void |
0ead2510 EG |
1636 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1637 | enum ieee80211_frame_release_type reason, | |
1638 | struct sk_buff_head *frames, | |
1639 | unsigned long *driver_release_tids) | |
af818581 JB |
1640 | { |
1641 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1642 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1643 | int ac; |
948d887d | 1644 | |
f9f760b4 | 1645 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1646 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1647 | unsigned long tids; |
1648 | ||
f438ceb8 | 1649 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1650 | continue; |
1651 | ||
4049e09a JB |
1652 | tids = ieee80211_tids_for_ac(ac); |
1653 | ||
f9f760b4 JB |
1654 | /* if we already have frames from software, then we can't also |
1655 | * release from hardware queues | |
1656 | */ | |
0ead2510 EG |
1657 | if (skb_queue_empty(frames)) { |
1658 | *driver_release_tids |= | |
1659 | sta->driver_buffered_tids & tids; | |
1660 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1661 | } |
948d887d | 1662 | |
0ead2510 | 1663 | if (!*driver_release_tids) { |
f9f760b4 JB |
1664 | struct sk_buff *skb; |
1665 | ||
1666 | while (n_frames > 0) { | |
1667 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1668 | if (!skb) { | |
1669 | skb = skb_dequeue( | |
1670 | &sta->ps_tx_buf[ac]); | |
1671 | if (skb) | |
1672 | local->total_ps_buffered--; | |
1673 | } | |
1674 | if (!skb) | |
1675 | break; | |
1676 | n_frames--; | |
0ead2510 | 1677 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1678 | } |
4049e09a | 1679 | } |
948d887d | 1680 | |
0ead2510 EG |
1681 | /* If we have more frames buffered on this AC, then abort the |
1682 | * loop since we can't send more data from other ACs before | |
1683 | * the buffered frames from this. | |
f9f760b4 | 1684 | */ |
948d887d | 1685 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1686 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1687 | break; |
af818581 | 1688 | } |
0ead2510 EG |
1689 | } |
1690 | ||
1691 | static void | |
1692 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1693 | int n_frames, u8 ignored_acs, | |
1694 | enum ieee80211_frame_release_type reason) | |
1695 | { | |
1696 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1697 | struct ieee80211_local *local = sdata->local; | |
1698 | unsigned long driver_release_tids = 0; | |
1699 | struct sk_buff_head frames; | |
1700 | bool more_data; | |
1701 | ||
1702 | /* Service or PS-Poll period starts */ | |
1703 | set_sta_flag(sta, WLAN_STA_SP); | |
1704 | ||
1705 | __skb_queue_head_init(&frames); | |
1706 | ||
1707 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1708 | &frames, &driver_release_tids); | |
1709 | ||
1710 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1711 | ||
1a57081a | 1712 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1713 | driver_release_tids = |
1714 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1715 | |
f9f760b4 | 1716 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1717 | int tid, ac; |
af818581 JB |
1718 | |
1719 | /* | |
ce662b44 JB |
1720 | * For PS-Poll, this can only happen due to a race condition |
1721 | * when we set the TIM bit and the station notices it, but | |
1722 | * before it can poll for the frame we expire it. | |
1723 | * | |
1724 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1725 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1726 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1727 | * more than the value specified in the Max SP Length field | |
1728 | * in the QoS Capability element from delivery-enabled ACs, | |
1729 | * that are destined for the non-AP STA. | |
1730 | * | |
1731 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1732 | */ |
af818581 | 1733 | |
ce662b44 | 1734 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1735 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1736 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1737 | break; | |
f438ceb8 | 1738 | tid = 7 - 2 * ac; |
af818581 | 1739 | |
0ead2510 | 1740 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1741 | } else if (!driver_release_tids) { |
47086fc5 JB |
1742 | struct sk_buff_head pending; |
1743 | struct sk_buff *skb; | |
40b96408 JB |
1744 | int num = 0; |
1745 | u16 tids = 0; | |
b77cf4f8 | 1746 | bool need_null = false; |
af818581 | 1747 | |
47086fc5 | 1748 | skb_queue_head_init(&pending); |
af818581 | 1749 | |
47086fc5 JB |
1750 | while ((skb = __skb_dequeue(&frames))) { |
1751 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1752 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1753 | u8 *qoshdr = NULL; |
1754 | ||
1755 | num++; | |
af818581 | 1756 | |
47086fc5 JB |
1757 | /* |
1758 | * Tell TX path to send this frame even though the | |
1759 | * STA may still remain is PS mode after this frame | |
1760 | * exchange. | |
1761 | */ | |
6b127c71 SM |
1762 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1763 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1764 | |
1765 | /* | |
1766 | * Use MoreData flag to indicate whether there are | |
1767 | * more buffered frames for this STA | |
1768 | */ | |
24b9c373 | 1769 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1770 | hdr->frame_control |= |
1771 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1772 | else |
1773 | hdr->frame_control &= | |
1774 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1775 | |
40b96408 JB |
1776 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1777 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1778 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1779 | ||
b77cf4f8 | 1780 | tids |= BIT(skb->priority); |
52a3f20c | 1781 | |
b77cf4f8 JB |
1782 | __skb_queue_tail(&pending, skb); |
1783 | ||
1784 | /* end service period after last frame or add one */ | |
1785 | if (!skb_queue_empty(&frames)) | |
1786 | continue; | |
1787 | ||
1788 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1789 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1790 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1791 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1792 | break; |
52a3f20c | 1793 | } |
deeaee19 | 1794 | |
b77cf4f8 JB |
1795 | /* For uAPSD, things are a bit more complicated. If the |
1796 | * last frame has a QoS header (i.e. is a QoS-data or | |
1797 | * QoS-nulldata frame) then just set the EOSP bit there | |
1798 | * and be done. | |
1799 | * If the frame doesn't have a QoS header (which means | |
1800 | * it should be a bufferable MMPDU) then we can't set | |
1801 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1802 | * frame to the list to send it after the MMPDU. | |
1803 | * | |
1804 | * Note that this code is only in the mac80211-release | |
1805 | * code path, we assume that the driver will not buffer | |
1806 | * anything but QoS-data frames, or if it does, will | |
1807 | * create the QoS-nulldata frame by itself if needed. | |
1808 | * | |
1809 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1810 | */ | |
1811 | if (qoshdr) { | |
1812 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1813 | |
b77cf4f8 JB |
1814 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1815 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1816 | } else { | |
1817 | /* The standard isn't completely clear on this | |
1818 | * as it says the more-data bit should be set | |
1819 | * if there are more BUs. The QoS-Null frame | |
1820 | * we're about to send isn't buffered yet, we | |
1821 | * only create it below, but let's pretend it | |
1822 | * was buffered just in case some clients only | |
1823 | * expect more-data=0 when eosp=1. | |
1824 | */ | |
1825 | hdr->frame_control |= | |
1826 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1827 | need_null = true; | |
1828 | num++; | |
1829 | } | |
1830 | break; | |
47086fc5 | 1831 | } |
af818581 | 1832 | |
40b96408 JB |
1833 | drv_allow_buffered_frames(local, sta, tids, num, |
1834 | reason, more_data); | |
1835 | ||
47086fc5 | 1836 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1837 | |
b77cf4f8 JB |
1838 | if (need_null) |
1839 | ieee80211_send_null_response( | |
0ead2510 EG |
1840 | sta, find_highest_prio_tid(tids), |
1841 | reason, false, false); | |
b77cf4f8 | 1842 | |
c868cb35 | 1843 | sta_info_recalc_tim(sta); |
af818581 | 1844 | } else { |
ba8c3d6f FF |
1845 | int tid; |
1846 | ||
af818581 | 1847 | /* |
4049e09a JB |
1848 | * We need to release a frame that is buffered somewhere in the |
1849 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1850 | * Note that the driver also has to check the number of frames |
1851 | * on the TIDs we're releasing from - if there are more than | |
1852 | * n_frames it has to set the more-data bit (if we didn't ask | |
1853 | * it to set it anyway due to other buffered frames); if there | |
1854 | * are fewer than n_frames it has to make sure to adjust that | |
1855 | * to allow the service period to end properly. | |
4049e09a JB |
1856 | */ |
1857 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1858 | n_frames, reason, more_data); |
4049e09a JB |
1859 | |
1860 | /* | |
1861 | * Note that we don't recalculate the TIM bit here as it would | |
1862 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1863 | * that the TID(s) became empty before returning here from the |
4049e09a | 1864 | * release function. |
f9f760b4 | 1865 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1866 | * became empty or we find that a txq became empty, we'll do the |
1867 | * TIM recalculation. | |
af818581 | 1868 | */ |
ba8c3d6f FF |
1869 | |
1870 | if (!sta->sta.txq[0]) | |
1871 | return; | |
1872 | ||
1873 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
adf8ed01 JB |
1874 | if (!sta->sta.txq[tid] || |
1875 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1876 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1877 | continue; |
1878 | ||
1879 | sta_info_recalc_tim(sta); | |
1880 | break; | |
1881 | } | |
af818581 JB |
1882 | } |
1883 | } | |
1884 | ||
47086fc5 JB |
1885 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1886 | { | |
1887 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1888 | ||
1889 | /* | |
1890 | * If all ACs are delivery-enabled then we should reply | |
1891 | * from any of them, if only some are enabled we reply | |
1892 | * only from the non-enabled ones. | |
1893 | */ | |
1894 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1895 | ignore_for_response = 0; | |
1896 | ||
1897 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1898 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1899 | } | |
1900 | ||
1901 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1902 | { | |
1903 | int n_frames = sta->sta.max_sp; | |
1904 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1905 | ||
1906 | /* | |
1907 | * If we ever grow support for TSPEC this might happen if | |
1908 | * the TSPEC update from hostapd comes in between a trigger | |
1909 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1910 | * actually getting called. | |
1911 | */ | |
1912 | if (!delivery_enabled) | |
1913 | return; | |
1914 | ||
47086fc5 JB |
1915 | switch (sta->sta.max_sp) { |
1916 | case 1: | |
1917 | n_frames = 2; | |
1918 | break; | |
1919 | case 2: | |
1920 | n_frames = 4; | |
1921 | break; | |
1922 | case 3: | |
1923 | n_frames = 6; | |
1924 | break; | |
1925 | case 0: | |
1926 | /* XXX: what is a good value? */ | |
13a8098a | 1927 | n_frames = 128; |
47086fc5 JB |
1928 | break; |
1929 | } | |
1930 | ||
1931 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1932 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1933 | } | |
1934 | ||
af818581 JB |
1935 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1936 | struct ieee80211_sta *pubsta, bool block) | |
1937 | { | |
1938 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1939 | ||
b5878a2d JB |
1940 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1941 | ||
5ac2e350 | 1942 | if (block) { |
c2c98fde | 1943 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1944 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1945 | return; |
1946 | } | |
1947 | ||
1948 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1949 | return; | |
1950 | ||
1951 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1952 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1953 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1954 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1955 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1956 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1957 | /* must be asleep in this case */ | |
1958 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1959 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1960 | } else { | |
1961 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1962 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1963 | } |
af818581 JB |
1964 | } |
1965 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1966 | |
e943789e | 1967 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1968 | { |
1969 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1970 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1971 | |
1972 | trace_api_eosp(local, pubsta); | |
1973 | ||
e943789e | 1974 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1975 | } |
e943789e | 1976 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1977 | |
0ead2510 EG |
1978 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1979 | { | |
1980 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1981 | enum ieee80211_frame_release_type reason; | |
1982 | bool more_data; | |
1983 | ||
1984 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1985 | ||
1986 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1987 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1988 | reason, 0); | |
1989 | ||
1990 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1991 | } | |
1992 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1993 | ||
042ec453 JB |
1994 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1995 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1996 | { |
1997 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1998 | ||
5a306f58 | 1999 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
2000 | return; |
2001 | ||
1b000789 JB |
2002 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
2003 | ||
948d887d JB |
2004 | if (buffered) |
2005 | set_bit(tid, &sta->driver_buffered_tids); | |
2006 | else | |
2007 | clear_bit(tid, &sta->driver_buffered_tids); | |
2008 | ||
c868cb35 | 2009 | sta_info_recalc_tim(sta); |
dcf55fb5 | 2010 | } |
042ec453 | 2011 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 2012 | |
942741da FF |
2013 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
2014 | u32 tx_airtime, u32 rx_airtime) | |
b4809e94 | 2015 | { |
942741da FF |
2016 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
2017 | struct ieee80211_local *local = sta->sdata->local; | |
2018 | u8 ac = ieee80211_ac_from_tid(tid); | |
b4809e94 | 2019 | u32 airtime = 0; |
c77bfab9 | 2020 | u32 diff; |
b4809e94 | 2021 | |
942741da | 2022 | if (sta->local->airtime_flags & AIRTIME_USE_TX) |
b4809e94 | 2023 | airtime += tx_airtime; |
942741da | 2024 | if (sta->local->airtime_flags & AIRTIME_USE_RX) |
b4809e94 THJ |
2025 | airtime += rx_airtime; |
2026 | ||
942741da FF |
2027 | spin_lock_bh(&local->active_txq_lock[ac]); |
2028 | sta->airtime[ac].tx_airtime += tx_airtime; | |
2029 | sta->airtime[ac].rx_airtime += rx_airtime; | |
c77bfab9 FF |
2030 | |
2031 | diff = (u32)jiffies - sta->airtime[ac].last_active; | |
2032 | if (diff <= AIRTIME_ACTIVE_DURATION) | |
2033 | sta->airtime[ac].deficit -= airtime; | |
2034 | ||
942741da | 2035 | spin_unlock_bh(&local->active_txq_lock[ac]); |
b4809e94 THJ |
2036 | } |
2037 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
2038 | ||
3ace10f5 KY |
2039 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
2040 | struct sta_info *sta, u8 ac, | |
2041 | u16 tx_airtime, bool tx_completed) | |
2042 | { | |
2043 | int tx_pending; | |
2044 | ||
911bde0f THJ |
2045 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
2046 | return; | |
2047 | ||
3ace10f5 KY |
2048 | if (!tx_completed) { |
2049 | if (sta) | |
2050 | atomic_add(tx_airtime, | |
2051 | &sta->airtime[ac].aql_tx_pending); | |
2052 | ||
2053 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
8e4bac06 | 2054 | atomic_add(tx_airtime, &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2055 | return; |
2056 | } | |
2057 | ||
2058 | if (sta) { | |
2059 | tx_pending = atomic_sub_return(tx_airtime, | |
2060 | &sta->airtime[ac].aql_tx_pending); | |
04e35caa | 2061 | if (tx_pending < 0) |
3ace10f5 KY |
2062 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
2063 | tx_pending, 0); | |
2064 | } | |
2065 | ||
8e4bac06 | 2066 | atomic_sub(tx_airtime, &local->aql_total_pending_airtime); |
3ace10f5 | 2067 | tx_pending = atomic_sub_return(tx_airtime, |
8e4bac06 | 2068 | &local->aql_ac_pending_airtime[ac]); |
3ace10f5 KY |
2069 | if (WARN_ONCE(tx_pending < 0, |
2070 | "Device %s AC %d pending airtime underflow: %u, %u", | |
2071 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
8e4bac06 FF |
2072 | tx_airtime)) { |
2073 | atomic_cmpxchg(&local->aql_ac_pending_airtime[ac], | |
3ace10f5 | 2074 | tx_pending, 0); |
8e4bac06 FF |
2075 | atomic_sub(tx_pending, &local->aql_total_pending_airtime); |
2076 | } | |
3ace10f5 KY |
2077 | } |
2078 | ||
83d5cc01 JB |
2079 | int sta_info_move_state(struct sta_info *sta, |
2080 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 2081 | { |
8bf11d8d | 2082 | might_sleep(); |
d9a7ddb0 JB |
2083 | |
2084 | if (sta->sta_state == new_state) | |
2085 | return 0; | |
2086 | ||
f09603a2 JB |
2087 | /* check allowed transitions first */ |
2088 | ||
2089 | switch (new_state) { | |
2090 | case IEEE80211_STA_NONE: | |
2091 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
2092 | return -EINVAL; | |
2093 | break; | |
2094 | case IEEE80211_STA_AUTH: | |
2095 | if (sta->sta_state != IEEE80211_STA_NONE && | |
2096 | sta->sta_state != IEEE80211_STA_ASSOC) | |
2097 | return -EINVAL; | |
2098 | break; | |
2099 | case IEEE80211_STA_ASSOC: | |
2100 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
2101 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
2102 | return -EINVAL; | |
2103 | break; | |
2104 | case IEEE80211_STA_AUTHORIZED: | |
2105 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
2106 | return -EINVAL; | |
2107 | break; | |
2108 | default: | |
2109 | WARN(1, "invalid state %d", new_state); | |
2110 | return -EINVAL; | |
2111 | } | |
2112 | ||
bdcbd8e0 JB |
2113 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
2114 | sta->sta.addr, new_state); | |
f09603a2 JB |
2115 | |
2116 | /* | |
2117 | * notify the driver before the actual changes so it can | |
2118 | * fail the transition | |
2119 | */ | |
2120 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
2121 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
2122 | sta->sta_state, new_state); | |
2123 | if (err) | |
2124 | return err; | |
2125 | } | |
2126 | ||
2127 | /* reflect the change in all state variables */ | |
2128 | ||
d9a7ddb0 JB |
2129 | switch (new_state) { |
2130 | case IEEE80211_STA_NONE: | |
2131 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
2132 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
2133 | break; |
2134 | case IEEE80211_STA_AUTH: | |
a7201a6c | 2135 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 2136 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 2137 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 2138 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
0cbf348a | 2139 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2140 | if (!sta->sta.support_p2p_ps) |
2141 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 2142 | } |
d9a7ddb0 JB |
2143 | break; |
2144 | case IEEE80211_STA_ASSOC: | |
29623892 | 2145 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 2146 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
9cf02338 | 2147 | sta->assoc_at = ktime_get_boottime_ns(); |
0cbf348a | 2148 | ieee80211_recalc_min_chandef(sta->sdata, -1); |
52cfa1d6 AB |
2149 | if (!sta->sta.support_p2p_ps) |
2150 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 2151 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 2152 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 2153 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2154 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 2155 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 2156 | } |
d9a7ddb0 JB |
2157 | break; |
2158 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 2159 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 2160 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 2161 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2162 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 2163 | ieee80211_check_fast_rx(sta); |
f09603a2 | 2164 | } |
3e493173 JM |
2165 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
2166 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
2167 | cfg80211_send_layer2_update(sta->sdata->dev, | |
2168 | sta->sta.addr); | |
d9a7ddb0 JB |
2169 | break; |
2170 | default: | |
f09603a2 | 2171 | break; |
d9a7ddb0 JB |
2172 | } |
2173 | ||
d9a7ddb0 JB |
2174 | sta->sta_state = new_state; |
2175 | ||
2176 | return 0; | |
2177 | } | |
687da132 | 2178 | |
c9c5962b JB |
2179 | static struct ieee80211_sta_rx_stats * |
2180 | sta_get_last_rx_stats(struct sta_info *sta) | |
2181 | { | |
046d2e7c | 2182 | struct ieee80211_sta_rx_stats *stats = &sta->deflink.rx_stats; |
c9c5962b JB |
2183 | int cpu; |
2184 | ||
046d2e7c | 2185 | if (!sta->deflink.pcpu_rx_stats) |
c9c5962b JB |
2186 | return stats; |
2187 | ||
2188 | for_each_possible_cpu(cpu) { | |
2189 | struct ieee80211_sta_rx_stats *cpustats; | |
2190 | ||
046d2e7c | 2191 | cpustats = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
c9c5962b JB |
2192 | |
2193 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2194 | stats = cpustats; | |
2195 | } | |
2196 | ||
2197 | return stats; | |
2198 | } | |
2199 | ||
41cbb0f5 | 2200 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2201 | struct rate_info *rinfo) |
fbd6ff5c | 2202 | { |
dcba665b | 2203 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2204 | |
dcba665b | 2205 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2206 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2207 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2208 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2209 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2210 | if (STA_STATS_GET(SGI, rate)) | |
2211 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2212 | break; |
2213 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2214 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2215 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2216 | if (STA_STATS_GET(SGI, rate)) | |
2217 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2218 | break; |
2219 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2220 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2221 | u16 brate; |
4f6b1b3d | 2222 | unsigned int shift; |
dcba665b JB |
2223 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2224 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2225 | |
dcba665b | 2226 | sband = local->hw.wiphy->bands[band]; |
8b783d10 TP |
2227 | |
2228 | if (WARN_ON_ONCE(!sband->bitrates)) | |
2229 | break; | |
2230 | ||
dcba665b | 2231 | brate = sband->bitrates[rate_idx].bitrate; |
4f6b1b3d JB |
2232 | if (rinfo->bw == RATE_INFO_BW_5) |
2233 | shift = 2; | |
2234 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2235 | shift = 1; | |
2236 | else | |
2237 | shift = 0; | |
fbd6ff5c | 2238 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2239 | break; |
2240 | } | |
41cbb0f5 LC |
2241 | case STA_STATS_RATE_TYPE_HE: |
2242 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2243 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2244 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2245 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2246 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2247 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2248 | break; | |
fbd6ff5c | 2249 | } |
4f6b1b3d JB |
2250 | } |
2251 | ||
a17d93ff | 2252 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2253 | { |
6aa7de05 | 2254 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2255 | |
4f6b1b3d | 2256 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2257 | return -EINVAL; |
2258 | ||
2259 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2260 | return 0; | |
fbd6ff5c JB |
2261 | } |
2262 | ||
b255b72b SM |
2263 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
2264 | int tid) | |
2265 | { | |
2266 | unsigned int start; | |
2267 | u64 value; | |
2268 | ||
2269 | do { | |
2270 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2271 | value = rxstats->msdu[tid]; | |
2272 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2273 | ||
2274 | return value; | |
2275 | } | |
2276 | ||
0f9c5a61 JB |
2277 | static void sta_set_tidstats(struct sta_info *sta, |
2278 | struct cfg80211_tid_stats *tidstats, | |
2279 | int tid) | |
2280 | { | |
2281 | struct ieee80211_local *local = sta->local; | |
b255b72b | 2282 | int cpu; |
0f9c5a61 JB |
2283 | |
2284 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
046d2e7c S |
2285 | tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->deflink.rx_stats, |
2286 | tid); | |
0f9c5a61 | 2287 | |
046d2e7c | 2288 | if (sta->deflink.pcpu_rx_stats) { |
b255b72b SM |
2289 | for_each_possible_cpu(cpu) { |
2290 | struct ieee80211_sta_rx_stats *cpurxs; | |
2291 | ||
046d2e7c S |
2292 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2293 | cpu); | |
b255b72b SM |
2294 | tidstats->rx_msdu += |
2295 | sta_get_tidstats_msdu(cpurxs, tid); | |
2296 | } | |
2297 | } | |
0f9c5a61 JB |
2298 | |
2299 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2300 | } | |
2301 | ||
2302 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2303 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
046d2e7c | 2304 | tidstats->tx_msdu = sta->deflink.tx_stats.msdu[tid]; |
0f9c5a61 JB |
2305 | } |
2306 | ||
2307 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2308 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2309 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
046d2e7c | 2310 | tidstats->tx_msdu_retries = sta->deflink.status_stats.msdu_retries[tid]; |
0f9c5a61 JB |
2311 | } |
2312 | ||
2313 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2314 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2315 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
046d2e7c | 2316 | tidstats->tx_msdu_failed = sta->deflink.status_stats.msdu_failed[tid]; |
0f9c5a61 | 2317 | } |
2fe4a29a THJ |
2318 | |
2319 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { | |
2320 | spin_lock_bh(&local->fq.lock); | |
2321 | rcu_read_lock(); | |
2322 | ||
2323 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2324 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2325 | to_txq_info(sta->sta.txq[tid])); | |
2326 | ||
2327 | rcu_read_unlock(); | |
2328 | spin_unlock_bh(&local->fq.lock); | |
2329 | } | |
0f9c5a61 JB |
2330 | } |
2331 | ||
c9c5962b JB |
2332 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2333 | { | |
2334 | unsigned int start; | |
2335 | u64 value; | |
2336 | ||
2337 | do { | |
2338 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2339 | value = rxstats->bytes; | |
2340 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2341 | ||
2342 | return value; | |
2343 | } | |
2344 | ||
0fdf1493 JB |
2345 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2346 | bool tidstats) | |
b7ffbd7e JB |
2347 | { |
2348 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2349 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2350 | u32 thr = 0; |
c9c5962b JB |
2351 | int i, ac, cpu; |
2352 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2353 | ||
2354 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2355 | |
2356 | sinfo->generation = sdata->local->sta_generation; | |
2357 | ||
225b8189 JB |
2358 | /* do before driver, so beacon filtering drivers have a |
2359 | * chance to e.g. just add the number of filtered beacons | |
2360 | * (or just modify the value entirely, of course) | |
2361 | */ | |
2362 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
bfd8403a | 2363 | sinfo->rx_beacon = sdata->deflink.u.mgd.count_beacon_signal; |
225b8189 | 2364 | |
2b9a7e1b | 2365 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
a4217750 OE |
2366 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2367 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2368 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2369 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2370 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2371 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2372 | |
2373 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
bfd8403a JB |
2374 | sinfo->beacon_loss_count = |
2375 | sdata->deflink.u.mgd.beacon_loss_count; | |
a4217750 | 2376 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2377 | } |
b7ffbd7e | 2378 | |
84b00607 | 2379 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2380 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2381 | sinfo->inactive_time = |
b8da6b6a | 2382 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2383 | |
a4217750 OE |
2384 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2385 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2386 | sinfo->tx_bytes = 0; |
2387 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2388 | sinfo->tx_bytes += sta->deflink.tx_stats.bytes[ac]; |
a4217750 | 2389 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2390 | } |
2391 | ||
a4217750 | 2392 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2393 | sinfo->tx_packets = 0; |
2394 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
046d2e7c | 2395 | sinfo->tx_packets += sta->deflink.tx_stats.packets[ac]; |
a4217750 | 2396 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2397 | } |
2398 | ||
a4217750 OE |
2399 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2400 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
046d2e7c | 2401 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->deflink.rx_stats); |
c9c5962b | 2402 | |
046d2e7c | 2403 | if (sta->deflink.pcpu_rx_stats) { |
c9c5962b JB |
2404 | for_each_possible_cpu(cpu) { |
2405 | struct ieee80211_sta_rx_stats *cpurxs; | |
2406 | ||
046d2e7c S |
2407 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2408 | cpu); | |
c9c5962b JB |
2409 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); |
2410 | } | |
2411 | } | |
0f9c5a61 | 2412 | |
a4217750 | 2413 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2414 | } |
2415 | ||
a4217750 | 2416 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
046d2e7c S |
2417 | sinfo->rx_packets = sta->deflink.rx_stats.packets; |
2418 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2419 | for_each_possible_cpu(cpu) { |
2420 | struct ieee80211_sta_rx_stats *cpurxs; | |
2421 | ||
046d2e7c S |
2422 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, |
2423 | cpu); | |
c9c5962b JB |
2424 | sinfo->rx_packets += cpurxs->packets; |
2425 | } | |
2426 | } | |
a4217750 | 2427 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2428 | } |
2429 | ||
a4217750 | 2430 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
046d2e7c | 2431 | sinfo->tx_retries = sta->deflink.status_stats.retry_count; |
a4217750 | 2432 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2433 | } |
2434 | ||
a4217750 | 2435 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
046d2e7c | 2436 | sinfo->tx_failed = sta->deflink.status_stats.retry_failed; |
a4217750 | 2437 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2438 | } |
2b9a7e1b | 2439 | |
b4809e94 THJ |
2440 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2441 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2442 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2443 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2444 | } | |
2445 | ||
2446 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2447 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2448 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2449 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2450 | } | |
2451 | ||
2452 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
942741da | 2453 | sinfo->airtime_weight = sta->airtime_weight; |
b4809e94 THJ |
2454 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
2455 | } | |
2456 | ||
046d2e7c S |
2457 | sinfo->rx_dropped_misc = sta->deflink.rx_stats.dropped; |
2458 | if (sta->deflink.pcpu_rx_stats) { | |
c9c5962b JB |
2459 | for_each_possible_cpu(cpu) { |
2460 | struct ieee80211_sta_rx_stats *cpurxs; | |
2461 | ||
046d2e7c | 2462 | cpurxs = per_cpu_ptr(sta->deflink.pcpu_rx_stats, cpu); |
e165bc02 | 2463 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2464 | } |
2465 | } | |
b7ffbd7e | 2466 | |
225b8189 JB |
2467 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2468 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2469 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2470 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2471 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2472 | } | |
2473 | ||
30686bf7 JB |
2474 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2475 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2476 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2477 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2478 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2479 | } |
2480 | ||
046d2e7c | 2481 | if (!sta->deflink.pcpu_rx_stats && |
a4217750 | 2482 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2483 | sinfo->signal_avg = |
046d2e7c | 2484 | -ewma_signal_read(&sta->deflink.rx_stats_avg.signal); |
a4217750 | 2485 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2486 | } |
b7ffbd7e | 2487 | } |
2b9a7e1b | 2488 | |
c9c5962b JB |
2489 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2490 | * the sta->rx_stats struct, so the check here is fine with and without | |
2491 | * pcpu statistics | |
2492 | */ | |
2493 | if (last_rxstats->chains && | |
a4217750 OE |
2494 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2495 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2496 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
046d2e7c | 2497 | if (!sta->deflink.pcpu_rx_stats) |
a4217750 | 2498 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2499 | |
2500 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2501 | |
b7ffbd7e | 2502 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2503 | sinfo->chain_signal[i] = |
c9c5962b | 2504 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2505 | sinfo->chain_signal_avg[i] = |
046d2e7c | 2506 | -ewma_signal_read(&sta->deflink.rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2507 | } |
2508 | } | |
2509 | ||
8a263dcb JB |
2510 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) && |
2511 | !sta->sta.valid_links) { | |
046d2e7c | 2512 | sta_set_rate_info_tx(sta, &sta->deflink.tx_stats.last_rate, |
e5a9f8d0 | 2513 | &sinfo->txrate); |
a4217750 | 2514 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2515 | } |
2516 | ||
8a263dcb JB |
2517 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) && |
2518 | !sta->sta.valid_links) { | |
a17d93ff | 2519 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2520 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2521 | } |
b7ffbd7e | 2522 | |
0fdf1493 | 2523 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2524 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2525 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2526 | } |
2527 | ||
b7ffbd7e JB |
2528 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2529 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2530 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2531 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2532 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2533 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2534 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a | 2535 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
1303a51c MT |
2536 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
2537 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); | |
b7ffbd7e | 2538 | |
433f5bc1 JB |
2539 | sinfo->llid = sta->mesh->llid; |
2540 | sinfo->plid = sta->mesh->plid; | |
2541 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2542 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2543 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2544 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2545 | } |
433f5bc1 JB |
2546 | sinfo->local_pm = sta->mesh->local_pm; |
2547 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2548 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2549 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
1303a51c | 2550 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
b7ffbd7e JB |
2551 | #endif |
2552 | } | |
2553 | ||
2554 | sinfo->bss_param.flags = 0; | |
2555 | if (sdata->vif.bss_conf.use_cts_prot) | |
2556 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2557 | if (sdata->vif.bss_conf.use_short_preamble) | |
2558 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2559 | if (sdata->vif.bss_conf.use_short_slot) | |
2560 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2561 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2562 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2563 | ||
2564 | sinfo->sta_flags.set = 0; | |
2565 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2566 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2567 | BIT(NL80211_STA_FLAG_WME) | | |
2568 | BIT(NL80211_STA_FLAG_MFP) | | |
2569 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2570 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2571 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2572 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2573 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2574 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2575 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2576 | if (sta->sta.wme) |
b7ffbd7e JB |
2577 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2578 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2579 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2580 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2581 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2582 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2583 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2584 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2585 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2586 | ||
3b17fbf8 MA |
2587 | thr = sta_get_expected_throughput(sta); |
2588 | ||
2589 | if (thr != 0) { | |
a4217750 | 2590 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2591 | sinfo->expected_throughput = thr; |
2592 | } | |
a78b26ff VN |
2593 | |
2594 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
046d2e7c S |
2595 | sta->deflink.status_stats.ack_signal_filled) { |
2596 | sinfo->ack_signal = sta->deflink.status_stats.last_ack_signal; | |
a78b26ff VN |
2597 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); |
2598 | } | |
cc60dbbf | 2599 | |
9c06602b | 2600 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
046d2e7c | 2601 | sta->deflink.status_stats.ack_signal_filled) { |
cc60dbbf BP |
2602 | sinfo->avg_ack_signal = |
2603 | -(s8)ewma_avg_signal_read( | |
046d2e7c | 2604 | &sta->deflink.status_stats.avg_ack_signal); |
cc60dbbf | 2605 | sinfo->filled |= |
9c06602b | 2606 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2607 | } |
ab60633c NM |
2608 | |
2609 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2610 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2611 | sinfo->airtime_link_metric = | |
2612 | airtime_link_metric_get(local, sta); | |
2613 | } | |
3b17fbf8 MA |
2614 | } |
2615 | ||
2616 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2617 | { | |
2618 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2619 | struct ieee80211_local *local = sdata->local; | |
2620 | struct rate_control_ref *ref = NULL; | |
2621 | u32 thr = 0; | |
2622 | ||
2623 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2624 | ref = local->rate_ctrl; | |
2625 | ||
b7ffbd7e JB |
2626 | /* check if the driver has a SW RC implementation */ |
2627 | if (ref && ref->ops->get_expected_throughput) | |
2628 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2629 | else | |
4fdbc67a | 2630 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2631 | |
3b17fbf8 | 2632 | return thr; |
b7ffbd7e | 2633 | } |
b8da6b6a JB |
2634 | |
2635 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2636 | { | |
c9c5962b JB |
2637 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2638 | ||
046d2e7c S |
2639 | if (!sta->deflink.status_stats.last_ack || |
2640 | time_after(stats->last_rx, sta->deflink.status_stats.last_ack)) | |
c9c5962b | 2641 | return stats->last_rx; |
046d2e7c | 2642 | return sta->deflink.status_stats.last_ack; |
b8da6b6a | 2643 | } |
484a54c2 THJ |
2644 | |
2645 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2646 | { | |
2647 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2648 | return; | |
2649 | ||
2650 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2651 | sta->cparams.target = MS2TIME(50); | |
2652 | sta->cparams.interval = MS2TIME(300); | |
2653 | sta->cparams.ecn = false; | |
2654 | } else { | |
2655 | sta->cparams.target = MS2TIME(20); | |
2656 | sta->cparams.interval = MS2TIME(100); | |
2657 | sta->cparams.ecn = true; | |
2658 | } | |
2659 | } | |
2660 | ||
2661 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2662 | u32 thr) | |
2663 | { | |
2664 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2665 | ||
2666 | sta_update_codel_params(sta, thr); | |
2667 | } | |
cb71f1d1 JB |
2668 | |
2669 | int ieee80211_sta_allocate_link(struct sta_info *sta, unsigned int link_id) | |
2670 | { | |
2671 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2672 | struct sta_link_alloc *alloc; | |
2673 | int ret; | |
2674 | ||
2675 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2676 | ||
2677 | /* must represent an MLD from the start */ | |
2678 | if (WARN_ON(!sta->sta.valid_links)) | |
2679 | return -EINVAL; | |
2680 | ||
2681 | if (WARN_ON(sta->sta.valid_links & BIT(link_id) || | |
2682 | sta->link[link_id])) | |
2683 | return -EBUSY; | |
2684 | ||
2685 | alloc = kzalloc(sizeof(*alloc), GFP_KERNEL); | |
2686 | if (!alloc) | |
2687 | return -ENOMEM; | |
2688 | ||
2689 | ret = sta_info_alloc_link(sdata->local, &alloc->info, GFP_KERNEL); | |
2690 | if (ret) { | |
2691 | kfree(alloc); | |
2692 | return ret; | |
2693 | } | |
2694 | ||
2695 | sta_info_add_link(sta, link_id, &alloc->info, &alloc->sta); | |
2696 | ||
2697 | return 0; | |
2698 | } | |
2699 | ||
ba6ddab9 JB |
2700 | static int link_sta_info_hash_add(struct ieee80211_local *local, |
2701 | struct link_sta_info *link_sta) | |
2702 | { | |
2703 | return rhltable_insert(&local->link_sta_hash, | |
2704 | &link_sta->link_hash_node, | |
2705 | link_sta_rht_params); | |
2706 | } | |
2707 | ||
21476ad1 ST |
2708 | void ieee80211_sta_free_link(struct sta_info *sta, unsigned int link_id) |
2709 | { | |
2710 | lockdep_assert_held(&sta->sdata->local->sta_mtx); | |
2711 | ||
2712 | sta_remove_link(sta, link_id, false); | |
2713 | } | |
2714 | ||
cb71f1d1 JB |
2715 | int ieee80211_sta_activate_link(struct sta_info *sta, unsigned int link_id) |
2716 | { | |
2717 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
c71420db | 2718 | struct link_sta_info *link_sta; |
cb71f1d1 JB |
2719 | u16 old_links = sta->sta.valid_links; |
2720 | u16 new_links = old_links | BIT(link_id); | |
2721 | int ret; | |
2722 | ||
c71420db JB |
2723 | link_sta = rcu_dereference_protected(sta->link[link_id], |
2724 | lockdep_is_held(&sdata->local->sta_mtx)); | |
cb71f1d1 | 2725 | |
c71420db | 2726 | if (WARN_ON(old_links == new_links || !link_sta)) |
cb71f1d1 JB |
2727 | return -EINVAL; |
2728 | ||
2729 | sta->sta.valid_links = new_links; | |
2730 | ||
ba6ddab9 JB |
2731 | if (!test_sta_flag(sta, WLAN_STA_INSERTED)) { |
2732 | ret = 0; | |
2733 | goto hash; | |
2734 | } | |
cb71f1d1 JB |
2735 | |
2736 | ret = drv_change_sta_links(sdata->local, sdata, &sta->sta, | |
2737 | old_links, new_links); | |
2738 | if (ret) { | |
2739 | sta->sta.valid_links = old_links; | |
ba6ddab9 | 2740 | sta_remove_link(sta, link_id, false); |
cb71f1d1 JB |
2741 | } |
2742 | ||
ba6ddab9 JB |
2743 | hash: |
2744 | link_sta_info_hash_add(sdata->local, link_sta); | |
2745 | ||
cb71f1d1 JB |
2746 | return ret; |
2747 | } | |
2748 | ||
2749 | void ieee80211_sta_remove_link(struct sta_info *sta, unsigned int link_id) | |
2750 | { | |
2751 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2752 | ||
2753 | lockdep_assert_held(&sdata->local->sta_mtx); | |
2754 | ||
2755 | sta->sta.valid_links &= ~BIT(link_id); | |
2756 | ||
2757 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) | |
2758 | drv_change_sta_links(sdata->local, sdata, &sta->sta, | |
2759 | sta->sta.valid_links, | |
2760 | sta->sta.valid_links & ~BIT(link_id)); | |
2761 | ||
ba6ddab9 | 2762 | sta_remove_link(sta, link_id, true); |
cb71f1d1 | 2763 | } |