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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 | |
7bedd0cf JB |
67 | static const struct rhashtable_params sta_rht_params = { |
68 | .nelem_hint = 3, /* start small */ | |
caf22d31 | 69 | .automatic_shrinking = true, |
7bedd0cf | 70 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 71 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf | 72 | .key_len = ETH_ALEN, |
ebd82b39 | 73 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
7bedd0cf JB |
74 | }; |
75 | ||
4d33960b | 76 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
77 | static int sta_info_hash_del(struct ieee80211_local *local, |
78 | struct sta_info *sta) | |
f0706e82 | 79 | { |
83e7e4ce HX |
80 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
81 | sta_rht_params); | |
f0706e82 JB |
82 | } |
83 | ||
5108ca82 | 84 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 85 | { |
b22cfcfc EP |
86 | int ac, i; |
87 | struct tid_ampdu_tx *tid_tx; | |
88 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
89 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 90 | struct ps_data *ps; |
b22cfcfc | 91 | |
e3685e03 | 92 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
93 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
94 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
95 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
96 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
97 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
98 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
99 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
100 | else |
101 | return; | |
b22cfcfc EP |
102 | |
103 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 104 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 105 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 106 | |
d012a605 | 107 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
108 | } |
109 | ||
ba8c3d6f FF |
110 | if (sta->sta.txq[0]) { |
111 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
adf8ed01 JB |
112 | struct txq_info *txqi; |
113 | ||
114 | if (!sta->sta.txq[i]) | |
115 | continue; | |
116 | ||
117 | txqi = to_txq_info(sta->sta.txq[i]); | |
ba8c3d6f | 118 | |
fa962b92 | 119 | ieee80211_txq_purge(local, txqi); |
ba8c3d6f FF |
120 | } |
121 | } | |
122 | ||
b22cfcfc EP |
123 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
124 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
125 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
126 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
127 | } |
128 | ||
45b5028e TP |
129 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
130 | mesh_sta_cleanup(sta); | |
b22cfcfc | 131 | |
5ac2e350 | 132 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
133 | |
134 | /* | |
135 | * Destroy aggregation state here. It would be nice to wait for the | |
136 | * driver to finish aggregation stop and then clean up, but for now | |
137 | * drivers have to handle aggregation stop being requested, followed | |
138 | * directly by station destruction. | |
139 | */ | |
5a306f58 | 140 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 141 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
142 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
143 | if (!tid_tx) | |
144 | continue; | |
1f98ab7f | 145 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
146 | kfree(tid_tx); |
147 | } | |
5108ca82 | 148 | } |
b22cfcfc | 149 | |
5108ca82 JB |
150 | static void cleanup_single_sta(struct sta_info *sta) |
151 | { | |
152 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
153 | struct ieee80211_local *local = sdata->local; | |
154 | ||
155 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
156 | sta_info_free(local, sta); |
157 | } | |
158 | ||
83e7e4ce HX |
159 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
160 | const u8 *addr) | |
161 | { | |
162 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
163 | } | |
164 | ||
d0709a65 | 165 | /* protected by RCU */ |
abe60632 JB |
166 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
167 | const u8 *addr) | |
f0706e82 | 168 | { |
abe60632 | 169 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 170 | struct rhlist_head *tmp; |
60f4b626 | 171 | struct sta_info *sta; |
f0706e82 | 172 | |
60f4b626 | 173 | rcu_read_lock(); |
83e7e4ce | 174 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
175 | if (sta->sdata == sdata) { |
176 | rcu_read_unlock(); | |
177 | /* this is safe as the caller must already hold | |
178 | * another rcu read section or the mutex | |
179 | */ | |
180 | return sta; | |
181 | } | |
182 | } | |
183 | rcu_read_unlock(); | |
184 | return NULL; | |
43ba7e95 JB |
185 | } |
186 | ||
0e5ded5a FF |
187 | /* |
188 | * Get sta info either from the specified interface | |
189 | * or from one of its vlans | |
190 | */ | |
191 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
192 | const u8 *addr) | |
193 | { | |
194 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 195 | struct rhlist_head *tmp; |
0e5ded5a FF |
196 | struct sta_info *sta; |
197 | ||
7bedd0cf | 198 | rcu_read_lock(); |
83e7e4ce | 199 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
200 | if (sta->sdata == sdata || |
201 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
202 | rcu_read_unlock(); | |
203 | /* this is safe as the caller must already hold | |
204 | * another rcu read section or the mutex | |
205 | */ | |
206 | return sta; | |
207 | } | |
0e5ded5a | 208 | } |
7bedd0cf JB |
209 | rcu_read_unlock(); |
210 | return NULL; | |
0e5ded5a FF |
211 | } |
212 | ||
5072f73c THJ |
213 | struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
214 | const u8 *sta_addr, const u8 *vif_addr) | |
215 | { | |
216 | struct rhlist_head *tmp; | |
217 | struct sta_info *sta; | |
218 | ||
219 | for_each_sta_info(local, sta_addr, sta, tmp) { | |
220 | if (ether_addr_equal(vif_addr, sta->sdata->vif.addr)) | |
221 | return sta; | |
222 | } | |
223 | ||
224 | return NULL; | |
225 | } | |
226 | ||
3b53fde8 JB |
227 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
228 | int idx) | |
ee385855 | 229 | { |
3b53fde8 | 230 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
231 | struct sta_info *sta; |
232 | int i = 0; | |
233 | ||
8ca47eb9 MB |
234 | list_for_each_entry_rcu(sta, &local->sta_list, list, |
235 | lockdep_is_held(&local->sta_mtx)) { | |
3b53fde8 | 236 | if (sdata != sta->sdata) |
2a8ca29a | 237 | continue; |
ee385855 LCC |
238 | if (i < idx) { |
239 | ++i; | |
240 | continue; | |
ee385855 | 241 | } |
2a8ca29a | 242 | return sta; |
ee385855 | 243 | } |
ee385855 LCC |
244 | |
245 | return NULL; | |
246 | } | |
f0706e82 | 247 | |
93e5deb1 | 248 | /** |
d9a7ddb0 | 249 | * sta_info_free - free STA |
93e5deb1 | 250 | * |
6ef307bc | 251 | * @local: pointer to the global information |
93e5deb1 JB |
252 | * @sta: STA info to free |
253 | * | |
254 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
255 | * that may happen before sta_info_insert(). It may only be |
256 | * called when sta_info_insert() has not been attempted (and | |
257 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 258 | */ |
d9a7ddb0 | 259 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 260 | { |
dcd479e1 JB |
261 | /* |
262 | * If we had used sta_info_pre_move_state() then we might not | |
263 | * have gone through the state transitions down again, so do | |
264 | * it here now (and warn if it's inserted). | |
265 | * | |
266 | * This will clear state such as fast TX/RX that may have been | |
267 | * allocated during state transitions. | |
268 | */ | |
269 | while (sta->sta_state > IEEE80211_STA_NONE) { | |
270 | int ret; | |
271 | ||
272 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
273 | ||
274 | ret = sta_info_move_state(sta, sta->sta_state - 1); | |
275 | if (WARN_ONCE(ret, "sta_info_move_state() returned %d\n", ret)) | |
276 | break; | |
277 | } | |
278 | ||
889cbb91 | 279 | if (sta->rate_ctrl) |
af65cd96 | 280 | rate_control_free_sta(sta); |
93e5deb1 | 281 | |
bdcbd8e0 | 282 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 283 | |
ba8c3d6f FF |
284 | if (sta->sta.txq[0]) |
285 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 286 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
287 | #ifdef CONFIG_MAC80211_MESH |
288 | kfree(sta->mesh); | |
289 | #endif | |
c9c5962b | 290 | free_percpu(sta->pcpu_rx_stats); |
93e5deb1 JB |
291 | kfree(sta); |
292 | } | |
293 | ||
4d33960b | 294 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
295 | static int sta_info_hash_add(struct ieee80211_local *local, |
296 | struct sta_info *sta) | |
f0706e82 | 297 | { |
83e7e4ce HX |
298 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
299 | sta_rht_params); | |
f0706e82 | 300 | } |
f0706e82 | 301 | |
5ac2e350 | 302 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
303 | { |
304 | struct sta_info *sta; | |
305 | ||
5ac2e350 | 306 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
307 | |
308 | if (sta->dead) | |
309 | return; | |
310 | ||
5ac2e350 JB |
311 | local_bh_disable(); |
312 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 313 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 314 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 315 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 316 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 317 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 318 | local_bh_enable(); |
af818581 JB |
319 | } |
320 | ||
af65cd96 JB |
321 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
322 | struct sta_info *sta, gfp_t gfp) | |
323 | { | |
30686bf7 | 324 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
325 | return 0; |
326 | ||
889cbb91 | 327 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 328 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 329 | sta, gfp); |
889cbb91 | 330 | if (!sta->rate_ctrl_priv) |
af65cd96 | 331 | return -ENOMEM; |
af65cd96 JB |
332 | |
333 | return 0; | |
334 | } | |
335 | ||
73651ee6 | 336 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 337 | const u8 *addr, gfp_t gfp) |
f0706e82 | 338 | { |
d0709a65 | 339 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 340 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 341 | struct sta_info *sta; |
16c5f15c | 342 | int i; |
f0706e82 | 343 | |
ba8c3d6f | 344 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 345 | if (!sta) |
73651ee6 | 346 | return NULL; |
f0706e82 | 347 | |
c9c5962b JB |
348 | if (ieee80211_hw_check(hw, USES_RSS)) { |
349 | sta->pcpu_rx_stats = | |
95f3ce6a | 350 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
c9c5962b JB |
351 | if (!sta->pcpu_rx_stats) |
352 | goto free; | |
353 | } | |
354 | ||
07346f81 | 355 | spin_lock_init(&sta->lock); |
1d147bfa | 356 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 357 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 358 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 359 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 360 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
361 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
362 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
363 | if (!sta->mesh) | |
364 | goto free; | |
4c02d62f | 365 | sta->mesh->plink_sta = sta; |
433f5bc1 JB |
366 | spin_lock_init(&sta->mesh->plink_lock); |
367 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
368 | !sdata->u.mesh.user_mpm) | |
4c02d62f KC |
369 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
370 | 0); | |
433f5bc1 JB |
371 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
372 | } | |
87f59c70 | 373 | #endif |
07346f81 | 374 | |
ac100ce5 | 375 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 376 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
480dd46b MA |
377 | sta->sta.max_rx_aggregation_subframes = |
378 | local->hw.max_rx_aggregation_subframes; | |
379 | ||
96fc6efb AW |
380 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
381 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
382 | * references to is not NULL. To not use the initial Rx-only key | |
383 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
384 | * which always will refer to a NULL key. | |
385 | */ | |
386 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
387 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
388 | ||
d0709a65 JB |
389 | sta->local = local; |
390 | sta->sdata = sdata; | |
e5a9f8d0 | 391 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 392 | |
0f9c5a61 JB |
393 | u64_stats_init(&sta->rx_stats.syncp); |
394 | ||
3a11ce08 JB |
395 | ieee80211_init_frag_cache(&sta->frags); |
396 | ||
71ec375c JB |
397 | sta->sta_state = IEEE80211_STA_NONE; |
398 | ||
b6da911b LK |
399 | /* Mark TID as unreserved */ |
400 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
401 | ||
84b00607 | 402 | sta->last_connected = ktime_get_seconds(); |
0be6ed13 | 403 | ewma_signal_init(&sta->rx_stats_avg.signal); |
cc60dbbf | 404 | ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
0be6ed13 JB |
405 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
406 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); | |
541a45a1 | 407 | |
ba8c3d6f FF |
408 | if (local->ops->wake_tx_queue) { |
409 | void *txq_data; | |
410 | int size = sizeof(struct txq_info) + | |
411 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
412 | ||
413 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
414 | if (!txq_data) | |
415 | goto free; | |
416 | ||
417 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
418 | struct txq_info *txq = txq_data + i * size; | |
419 | ||
adf8ed01 | 420 | /* might not do anything for the bufferable MMPDU TXQ */ |
fa962b92 | 421 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 422 | } |
abfbc3af | 423 | } |
f0706e82 | 424 | |
ba8c3d6f FF |
425 | if (sta_prepare_rate_control(local, sta, gfp)) |
426 | goto free_txq; | |
427 | ||
b4809e94 | 428 | |
948d887d JB |
429 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
430 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
431 | skb_queue_head_init(&sta->tx_filtered[i]); | |
2433647b | 432 | init_airtime_info(&sta->airtime[i], &local->airtime[i]); |
948d887d | 433 | } |
73651ee6 | 434 | |
5a306f58 | 435 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 436 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 437 | |
bd718fc1 JB |
438 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
439 | u32 mandatory = 0; | |
440 | int r; | |
441 | ||
442 | if (!hw->wiphy->bands[i]) | |
443 | continue; | |
444 | ||
445 | switch (i) { | |
446 | case NL80211_BAND_2GHZ: | |
63fa0426 | 447 | case NL80211_BAND_LC: |
bd718fc1 JB |
448 | /* |
449 | * We use both here, even if we cannot really know for | |
450 | * sure the station will support both, but the only use | |
451 | * for this is when we don't know anything yet and send | |
452 | * management frames, and then we'll pick the lowest | |
453 | * possible rate anyway. | |
454 | * If we don't include _G here, we cannot find a rate | |
455 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
456 | */ | |
457 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
458 | IEEE80211_RATE_MANDATORY_G; | |
459 | break; | |
460 | case NL80211_BAND_5GHZ: | |
461 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
462 | break; | |
463 | case NL80211_BAND_60GHZ: | |
464 | WARN_ON(1); | |
465 | mandatory = 0; | |
466 | break; | |
467 | } | |
468 | ||
469 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
470 | struct ieee80211_rate *rate; | |
471 | ||
472 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
473 | ||
474 | if (!(rate->flags & mandatory)) | |
475 | continue; | |
476 | sta->sta.supp_rates[i] |= BIT(r); | |
477 | } | |
478 | } | |
479 | ||
af0ed69b | 480 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
481 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
482 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
21a8e9dd MSS |
483 | struct ieee80211_supported_band *sband; |
484 | u8 smps; | |
485 | ||
486 | sband = ieee80211_get_sband(sdata); | |
487 | if (!sband) | |
488 | goto free_txq; | |
489 | ||
490 | smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> | |
491 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
687da132 EG |
492 | /* |
493 | * Assume that hostapd advertises our caps in the beacon and | |
494 | * this is the known_smps_mode for a station that just assciated | |
495 | */ | |
496 | switch (smps) { | |
497 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
498 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
499 | break; | |
500 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
501 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
502 | break; | |
503 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
504 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
505 | break; | |
506 | default: | |
507 | WARN_ON(1); | |
508 | } | |
509 | } | |
af0ed69b | 510 | |
6e0456b5 FF |
511 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
512 | ||
484a54c2 THJ |
513 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
514 | sta->cparams.target = MS2TIME(20); | |
515 | sta->cparams.interval = MS2TIME(100); | |
516 | sta->cparams.ecn = true; | |
dfcb63ce THJ |
517 | sta->cparams.ce_threshold_selector = 0; |
518 | sta->cparams.ce_threshold_mask = 0; | |
484a54c2 | 519 | |
bdcbd8e0 | 520 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 521 | |
abfbc3af | 522 | return sta; |
ba8c3d6f FF |
523 | |
524 | free_txq: | |
525 | if (sta->sta.txq[0]) | |
526 | kfree(to_txq_info(sta->sta.txq[0])); | |
527 | free: | |
d78d9ee9 | 528 | free_percpu(sta->pcpu_rx_stats); |
433f5bc1 JB |
529 | #ifdef CONFIG_MAC80211_MESH |
530 | kfree(sta->mesh); | |
531 | #endif | |
ba8c3d6f FF |
532 | kfree(sta); |
533 | return NULL; | |
73651ee6 JB |
534 | } |
535 | ||
8c71df7a | 536 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 537 | { |
34e89507 | 538 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 539 | |
03e4497e JB |
540 | /* |
541 | * Can't be a WARN_ON because it can be triggered through a race: | |
542 | * something inserts a STA (on one CPU) without holding the RTNL | |
543 | * and another CPU turns off the net device. | |
544 | */ | |
8c71df7a GE |
545 | if (unlikely(!ieee80211_sdata_running(sdata))) |
546 | return -ENETDOWN; | |
03e4497e | 547 | |
b203ca39 | 548 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
deebea0a | 549 | !is_valid_ether_addr(sta->sta.addr))) |
8c71df7a GE |
550 | return -EINVAL; |
551 | ||
83e7e4ce HX |
552 | /* The RCU read lock is required by rhashtable due to |
553 | * asynchronous resize/rehash. We also require the mutex | |
554 | * for correctness. | |
31104891 JB |
555 | */ |
556 | rcu_read_lock(); | |
557 | lockdep_assert_held(&sdata->local->sta_mtx); | |
558 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
559 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
560 | rcu_read_unlock(); | |
561 | return -ENOTUNIQ; | |
562 | } | |
563 | rcu_read_unlock(); | |
564 | ||
8c71df7a GE |
565 | return 0; |
566 | } | |
567 | ||
f09603a2 JB |
568 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
569 | struct ieee80211_sub_if_data *sdata, | |
570 | struct sta_info *sta) | |
571 | { | |
572 | enum ieee80211_sta_state state; | |
573 | int err = 0; | |
574 | ||
575 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
576 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
577 | if (err) | |
578 | break; | |
579 | } | |
580 | ||
581 | if (!err) { | |
a4ec45a4 JB |
582 | /* |
583 | * Drivers using legacy sta_add/sta_remove callbacks only | |
584 | * get uploaded set to true after sta_add is called. | |
585 | */ | |
586 | if (!local->ops->sta_add) | |
587 | sta->uploaded = true; | |
f09603a2 JB |
588 | return 0; |
589 | } | |
590 | ||
591 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
592 | sdata_info(sdata, |
593 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
594 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
595 | err = 0; |
596 | } | |
597 | ||
598 | /* unwind on error */ | |
599 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
600 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
601 | ||
602 | return err; | |
603 | } | |
604 | ||
d405fd8c GG |
605 | static void |
606 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
607 | { | |
608 | struct ieee80211_local *local = sdata->local; | |
609 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
610 | struct sta_info *sta; | |
611 | ||
612 | rcu_read_lock(); | |
613 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
614 | if (sdata != sta->sdata || | |
615 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
616 | continue; | |
617 | if (!sta->sta.support_p2p_ps) { | |
618 | allow_p2p_go_ps = false; | |
619 | break; | |
620 | } | |
621 | } | |
622 | rcu_read_unlock(); | |
623 | ||
624 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
625 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
626 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); | |
627 | } | |
628 | } | |
629 | ||
8c71df7a GE |
630 | /* |
631 | * should be called with sta_mtx locked | |
632 | * this function replaces the mutex lock | |
633 | * with a RCU lock | |
634 | */ | |
4d33960b | 635 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
636 | { |
637 | struct ieee80211_local *local = sta->local; | |
638 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 639 | struct station_info *sinfo = NULL; |
8c71df7a GE |
640 | int err = 0; |
641 | ||
642 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 643 | |
7852e361 JB |
644 | /* check if STA exists already */ |
645 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
646 | err = -EEXIST; | |
8f9dcc29 | 647 | goto out_cleanup; |
4d33960b | 648 | } |
32bfd35d | 649 | |
0c2e3842 KV |
650 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
651 | if (!sinfo) { | |
652 | err = -ENOMEM; | |
8f9dcc29 | 653 | goto out_cleanup; |
0c2e3842 KV |
654 | } |
655 | ||
7852e361 JB |
656 | local->num_sta++; |
657 | local->sta_generation++; | |
658 | smp_mb(); | |
4d33960b | 659 | |
5108ca82 JB |
660 | /* simplify things and don't accept BA sessions yet */ |
661 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
662 | ||
7852e361 | 663 | /* make the station visible */ |
62b14b24 JB |
664 | err = sta_info_hash_add(local, sta); |
665 | if (err) | |
666 | goto out_drop_sta; | |
83d5cc01 | 667 | |
2bad7748 | 668 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 669 | |
5108ca82 JB |
670 | /* notify driver */ |
671 | err = sta_info_insert_drv_state(local, sdata, sta); | |
672 | if (err) | |
673 | goto out_remove; | |
674 | ||
7852e361 | 675 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c GG |
676 | |
677 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
678 | ieee80211_recalc_min_chandef(sta->sdata); | |
679 | if (!sta->sta.support_p2p_ps) | |
680 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
681 | } | |
682 | ||
5108ca82 JB |
683 | /* accept BA sessions now */ |
684 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 685 | |
7852e361 JB |
686 | ieee80211_sta_debugfs_add(sta); |
687 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 688 | |
0ef049dc AB |
689 | sinfo->generation = local->sta_generation; |
690 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
691 | kfree(sinfo); | |
d0709a65 | 692 | |
bdcbd8e0 | 693 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 694 | |
34e89507 JB |
695 | /* move reference to rcu-protected */ |
696 | rcu_read_lock(); | |
697 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 698 | |
73651ee6 JB |
699 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
700 | mesh_accept_plinks_update(sdata); | |
701 | ||
8c71df7a | 702 | return 0; |
5108ca82 JB |
703 | out_remove: |
704 | sta_info_hash_del(local, sta); | |
705 | list_del_rcu(&sta->list); | |
62b14b24 | 706 | out_drop_sta: |
5108ca82 JB |
707 | local->num_sta--; |
708 | synchronize_net(); | |
8f9dcc29 | 709 | out_cleanup: |
7bc40aed | 710 | cleanup_single_sta(sta); |
4d33960b | 711 | mutex_unlock(&local->sta_mtx); |
ea32f065 | 712 | kfree(sinfo); |
4d33960b JB |
713 | rcu_read_lock(); |
714 | return err; | |
8c71df7a GE |
715 | } |
716 | ||
717 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
718 | { | |
719 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 720 | int err; |
8c71df7a | 721 | |
4d33960b JB |
722 | might_sleep(); |
723 | ||
31104891 JB |
724 | mutex_lock(&local->sta_mtx); |
725 | ||
8c71df7a GE |
726 | err = sta_info_insert_check(sta); |
727 | if (err) { | |
7bc40aed | 728 | sta_info_free(local, sta); |
31104891 | 729 | mutex_unlock(&local->sta_mtx); |
8c71df7a | 730 | rcu_read_lock(); |
7bc40aed | 731 | return err; |
8c71df7a GE |
732 | } |
733 | ||
7bc40aed | 734 | return sta_info_insert_finish(sta); |
f0706e82 JB |
735 | } |
736 | ||
34e89507 JB |
737 | int sta_info_insert(struct sta_info *sta) |
738 | { | |
739 | int err = sta_info_insert_rcu(sta); | |
740 | ||
741 | rcu_read_unlock(); | |
742 | ||
743 | return err; | |
744 | } | |
745 | ||
d012a605 | 746 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
747 | { |
748 | /* | |
749 | * This format has been mandated by the IEEE specifications, | |
750 | * so this line may not be changed to use the __set_bit() format. | |
751 | */ | |
d012a605 | 752 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
753 | } |
754 | ||
d012a605 | 755 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
756 | { |
757 | /* | |
758 | * This format has been mandated by the IEEE specifications, | |
759 | * so this line may not be changed to use the __clear_bit() format. | |
760 | */ | |
d012a605 | 761 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
762 | } |
763 | ||
3d5839b6 IP |
764 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
765 | { | |
766 | /* | |
767 | * This format has been mandated by the IEEE specifications, | |
768 | * so this line may not be changed to use the test_bit() format. | |
769 | */ | |
770 | return tim[id / 8] & (1 << (id % 8)); | |
771 | } | |
772 | ||
948d887d | 773 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 774 | { |
948d887d JB |
775 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
776 | switch (ac) { | |
777 | case IEEE80211_AC_VO: | |
778 | return BIT(6) | BIT(7); | |
779 | case IEEE80211_AC_VI: | |
780 | return BIT(4) | BIT(5); | |
781 | case IEEE80211_AC_BE: | |
782 | return BIT(0) | BIT(3); | |
783 | case IEEE80211_AC_BK: | |
784 | return BIT(1) | BIT(2); | |
785 | default: | |
786 | WARN_ON(1); | |
787 | return 0; | |
d0709a65 | 788 | } |
004c872e JB |
789 | } |
790 | ||
9b7a86f3 | 791 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 792 | { |
c868cb35 | 793 | struct ieee80211_local *local = sta->local; |
d012a605 | 794 | struct ps_data *ps; |
948d887d JB |
795 | bool indicate_tim = false; |
796 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
797 | int ac; | |
a69bd8e6 | 798 | u16 id = sta->sta.aid; |
d012a605 MP |
799 | |
800 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
801 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
802 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
803 | return; | |
004c872e | 804 | |
d012a605 | 805 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
806 | #ifdef CONFIG_MAC80211_MESH |
807 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
808 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 809 | #endif |
d012a605 | 810 | } else { |
c868cb35 | 811 | return; |
d012a605 | 812 | } |
3e122be0 | 813 | |
c868cb35 | 814 | /* No need to do anything if the driver does all */ |
d98937f4 | 815 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 816 | return; |
004c872e | 817 | |
c868cb35 JB |
818 | if (sta->dead) |
819 | goto done; | |
3e122be0 | 820 | |
948d887d JB |
821 | /* |
822 | * If all ACs are delivery-enabled then we should build | |
823 | * the TIM bit for all ACs anyway; if only some are then | |
824 | * we ignore those and build the TIM bit using only the | |
825 | * non-enabled ones. | |
826 | */ | |
827 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
828 | ignore_for_tim = 0; | |
829 | ||
9b7a86f3 JB |
830 | if (ignore_pending) |
831 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
832 | ||
948d887d JB |
833 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
834 | unsigned long tids; | |
3e122be0 | 835 | |
f438ceb8 | 836 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
837 | continue; |
838 | ||
839 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
840 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
841 | if (indicate_tim) | |
842 | break; | |
3e122be0 | 843 | |
948d887d JB |
844 | tids = ieee80211_tids_for_ac(ac); |
845 | ||
846 | indicate_tim |= | |
847 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
848 | indicate_tim |= |
849 | sta->txq_buffered_tids & tids; | |
d0709a65 | 850 | } |
004c872e | 851 | |
c868cb35 | 852 | done: |
65f704a5 | 853 | spin_lock_bh(&local->tim_lock); |
004c872e | 854 | |
3d5839b6 IP |
855 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
856 | goto out_unlock; | |
857 | ||
948d887d | 858 | if (indicate_tim) |
d012a605 | 859 | __bss_tim_set(ps->tim, id); |
c868cb35 | 860 | else |
d012a605 | 861 | __bss_tim_clear(ps->tim, id); |
004c872e | 862 | |
9b7a86f3 | 863 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 864 | local->tim_in_locked_section = true; |
948d887d | 865 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
866 | local->tim_in_locked_section = false; |
867 | } | |
3e122be0 | 868 | |
3d5839b6 | 869 | out_unlock: |
65f704a5 | 870 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
871 | } |
872 | ||
9b7a86f3 JB |
873 | void sta_info_recalc_tim(struct sta_info *sta) |
874 | { | |
875 | __sta_info_recalc_tim(sta, false); | |
876 | } | |
877 | ||
cd0b8d89 | 878 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 879 | { |
e039fa4a | 880 | struct ieee80211_tx_info *info; |
f0706e82 JB |
881 | int timeout; |
882 | ||
883 | if (!skb) | |
cd0b8d89 | 884 | return false; |
f0706e82 | 885 | |
e039fa4a | 886 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
887 | |
888 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
889 | timeout = (sta->listen_interval * |
890 | sta->sdata->vif.bss_conf.beacon_int * | |
891 | 32 / 15625) * HZ; | |
f0706e82 JB |
892 | if (timeout < STA_TX_BUFFER_EXPIRE) |
893 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 894 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
895 | } |
896 | ||
897 | ||
948d887d JB |
898 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
899 | struct sta_info *sta, int ac) | |
f0706e82 JB |
900 | { |
901 | unsigned long flags; | |
902 | struct sk_buff *skb; | |
903 | ||
60750397 JB |
904 | /* |
905 | * First check for frames that should expire on the filtered | |
906 | * queue. Frames here were rejected by the driver and are on | |
907 | * a separate queue to avoid reordering with normal PS-buffered | |
908 | * frames. They also aren't accounted for right now in the | |
909 | * total_ps_buffered counter. | |
910 | */ | |
911 | for (;;) { | |
948d887d JB |
912 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
913 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 914 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 915 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
916 | else |
917 | skb = NULL; | |
948d887d | 918 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
919 | |
920 | /* | |
921 | * Frames are queued in order, so if this one | |
922 | * hasn't expired yet we can stop testing. If | |
923 | * we actually reached the end of the queue we | |
924 | * also need to stop, of course. | |
925 | */ | |
926 | if (!skb) | |
927 | break; | |
d4fa14cd | 928 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
929 | } |
930 | ||
931 | /* | |
932 | * Now also check the normal PS-buffered queue, this will | |
933 | * only find something if the filtered queue was emptied | |
934 | * since the filtered frames are all before the normal PS | |
935 | * buffered frames. | |
936 | */ | |
f0706e82 | 937 | for (;;) { |
948d887d JB |
938 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
939 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 940 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 941 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 942 | else |
f0706e82 | 943 | skb = NULL; |
948d887d | 944 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 945 | |
60750397 JB |
946 | /* |
947 | * frames are queued in order, so if this one | |
948 | * hasn't expired yet (or we reached the end of | |
949 | * the queue) we can stop testing | |
950 | */ | |
836341a7 | 951 | if (!skb) |
f0706e82 | 952 | break; |
836341a7 | 953 | |
836341a7 | 954 | local->total_ps_buffered--; |
bdcbd8e0 JB |
955 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
956 | sta->sta.addr); | |
d4fa14cd | 957 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 958 | } |
3393a608 | 959 | |
60750397 JB |
960 | /* |
961 | * Finally, recalculate the TIM bit for this station -- it might | |
962 | * now be clear because the station was too slow to retrieve its | |
963 | * frames. | |
964 | */ | |
965 | sta_info_recalc_tim(sta); | |
966 | ||
967 | /* | |
968 | * Return whether there are any frames still buffered, this is | |
969 | * used to check whether the cleanup timer still needs to run, | |
970 | * if there are no frames we don't need to rearm the timer. | |
971 | */ | |
948d887d JB |
972 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
973 | skb_queue_empty(&sta->tx_filtered[ac])); | |
974 | } | |
975 | ||
976 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
977 | struct sta_info *sta) | |
978 | { | |
979 | bool have_buffered = false; | |
980 | int ac; | |
981 | ||
3f52b7e3 MP |
982 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
983 | if (!sta->sdata->bss && | |
984 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
985 | return false; |
986 | ||
987 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
988 | have_buffered |= | |
989 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
990 | ||
991 | return have_buffered; | |
f0706e82 JB |
992 | } |
993 | ||
d778207b | 994 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 995 | { |
34e89507 JB |
996 | struct ieee80211_local *local; |
997 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 998 | int ret; |
f0706e82 | 999 | |
34e89507 | 1000 | might_sleep(); |
f0706e82 | 1001 | |
34e89507 JB |
1002 | if (!sta) |
1003 | return -ENOENT; | |
5bb644a0 | 1004 | |
34e89507 JB |
1005 | local = sta->local; |
1006 | sdata = sta->sdata; | |
f0706e82 | 1007 | |
83d5cc01 JB |
1008 | lockdep_assert_held(&local->sta_mtx); |
1009 | ||
098a6070 JB |
1010 | /* |
1011 | * Before removing the station from the driver and | |
1012 | * rate control, it might still start new aggregation | |
1013 | * sessions -- block that to make sure the tear-down | |
1014 | * will be sufficient. | |
1015 | */ | |
c2c98fde | 1016 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1017 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1018 | |
f59374eb SS |
1019 | /* |
1020 | * Before removing the station from the driver there might be pending | |
1021 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1022 | * all such frames to be processed. | |
1023 | */ | |
1024 | drv_sync_rx_queues(local, sta); | |
1025 | ||
34e89507 | 1026 | ret = sta_info_hash_del(local, sta); |
b01711be | 1027 | if (WARN_ON(ret)) |
34e89507 JB |
1028 | return ret; |
1029 | ||
a7a6bdd0 AN |
1030 | /* |
1031 | * for TDLS peers, make sure to return to the base channel before | |
1032 | * removal. | |
1033 | */ | |
1034 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1035 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1036 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1037 | } | |
1038 | ||
794454ce | 1039 | list_del_rcu(&sta->list); |
ef044763 | 1040 | sta->removed = true; |
4d33960b | 1041 | |
6a9d1b91 JB |
1042 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
1043 | ||
a710c816 JB |
1044 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1045 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1046 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1047 | ||
d778207b JB |
1048 | return 0; |
1049 | } | |
1050 | ||
1051 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1052 | { | |
1053 | struct ieee80211_local *local = sta->local; | |
1054 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1055 | struct station_info *sinfo; |
d778207b JB |
1056 | int ret; |
1057 | ||
1058 | /* | |
1059 | * NOTE: This assumes at least synchronize_net() was done | |
1060 | * after _part1 and before _part2! | |
1061 | */ | |
1062 | ||
1063 | might_sleep(); | |
1064 | lockdep_assert_held(&local->sta_mtx); | |
1065 | ||
5981fe5b | 1066 | if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
b16798f5 JB |
1067 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
1068 | WARN_ON_ONCE(ret); | |
1069 | } | |
1070 | ||
c8782078 | 1071 | /* now keys can no longer be reached */ |
6d10e46b | 1072 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1073 | |
9b7a86f3 JB |
1074 | /* disable TIM bit - last chance to tell driver */ |
1075 | __sta_info_recalc_tim(sta, true); | |
1076 | ||
34e89507 JB |
1077 | sta->dead = true; |
1078 | ||
34e89507 JB |
1079 | local->num_sta--; |
1080 | local->sta_generation++; | |
1081 | ||
83d5cc01 | 1082 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1083 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1084 | if (ret) { | |
83d5cc01 JB |
1085 | WARN_ON_ONCE(1); |
1086 | break; | |
1087 | } | |
1088 | } | |
d9a7ddb0 | 1089 | |
f09603a2 | 1090 | if (sta->uploaded) { |
f09603a2 JB |
1091 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1092 | IEEE80211_STA_NOTEXIST); | |
1093 | WARN_ON_ONCE(ret != 0); | |
1094 | } | |
34e89507 | 1095 | |
bdcbd8e0 JB |
1096 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1097 | ||
0ef049dc AB |
1098 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1099 | if (sinfo) | |
0fdf1493 | 1100 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1101 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1102 | kfree(sinfo); | |
ec15e68b | 1103 | |
34e89507 JB |
1104 | ieee80211_sta_debugfs_remove(sta); |
1105 | ||
3a11ce08 JB |
1106 | ieee80211_destroy_frag_cache(&sta->frags); |
1107 | ||
d34ba216 | 1108 | cleanup_single_sta(sta); |
d778207b JB |
1109 | } |
1110 | ||
1111 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1112 | { | |
1113 | int err = __sta_info_destroy_part1(sta); | |
1114 | ||
1115 | if (err) | |
1116 | return err; | |
1117 | ||
1118 | synchronize_net(); | |
1119 | ||
1120 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1121 | |
1122 | return 0; | |
4d6141c3 JS |
1123 | } |
1124 | ||
34e89507 | 1125 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1126 | { |
34e89507 JB |
1127 | struct sta_info *sta; |
1128 | int ret; | |
4d6141c3 | 1129 | |
34e89507 | 1130 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1131 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1132 | ret = __sta_info_destroy(sta); |
1133 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1134 | |
1135 | return ret; | |
1136 | } | |
1137 | ||
34e89507 JB |
1138 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1139 | const u8 *addr) | |
e9f207f0 | 1140 | { |
34e89507 JB |
1141 | struct sta_info *sta; |
1142 | int ret; | |
e9f207f0 | 1143 | |
34e89507 | 1144 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1145 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1146 | ret = __sta_info_destroy(sta); |
1147 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1148 | |
34e89507 JB |
1149 | return ret; |
1150 | } | |
e9f207f0 | 1151 | |
34f11cd3 | 1152 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1153 | { |
34f11cd3 | 1154 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1155 | struct sta_info *sta; |
3393a608 | 1156 | bool timer_needed = false; |
34e89507 JB |
1157 | |
1158 | rcu_read_lock(); | |
1159 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1160 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1161 | timer_needed = true; | |
34e89507 | 1162 | rcu_read_unlock(); |
e9f207f0 | 1163 | |
34e89507 JB |
1164 | if (local->quiescing) |
1165 | return; | |
d0709a65 | 1166 | |
3393a608 JO |
1167 | if (!timer_needed) |
1168 | return; | |
1169 | ||
26d59535 JB |
1170 | mod_timer(&local->sta_cleanup, |
1171 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1172 | } |
e9f207f0 | 1173 | |
7bedd0cf JB |
1174 | int sta_info_init(struct ieee80211_local *local) |
1175 | { | |
1176 | int err; | |
1177 | ||
83e7e4ce | 1178 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1179 | if (err) |
1180 | return err; | |
1181 | ||
4d33960b | 1182 | spin_lock_init(&local->tim_lock); |
34e89507 | 1183 | mutex_init(&local->sta_mtx); |
f0706e82 | 1184 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1185 | |
34f11cd3 | 1186 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1187 | return 0; |
f0706e82 JB |
1188 | } |
1189 | ||
1190 | void sta_info_stop(struct ieee80211_local *local) | |
1191 | { | |
a56f992c | 1192 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1193 | rhltable_destroy(&local->sta_hash); |
f0706e82 JB |
1194 | } |
1195 | ||
051007d9 | 1196 | |
e716251d | 1197 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1198 | { |
b998e8bb | 1199 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1200 | struct sta_info *sta, *tmp; |
d778207b | 1201 | LIST_HEAD(free_list); |
44213b5e | 1202 | int ret = 0; |
f0706e82 | 1203 | |
d0709a65 | 1204 | might_sleep(); |
be8755e1 | 1205 | |
e716251d JB |
1206 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1207 | WARN_ON(vlans && !sdata->bss); | |
1208 | ||
34e89507 | 1209 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1210 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1211 | if (sdata == sta->sdata || |
1212 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1213 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1214 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1215 | ret++; |
1216 | } | |
be8755e1 | 1217 | } |
d778207b JB |
1218 | |
1219 | if (!list_empty(&free_list)) { | |
1220 | synchronize_net(); | |
1221 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1222 | __sta_info_destroy_part2(sta); | |
1223 | } | |
34e89507 | 1224 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1225 | |
051007d9 JB |
1226 | return ret; |
1227 | } | |
1228 | ||
24723d1b JB |
1229 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1230 | unsigned long exp_time) | |
1231 | { | |
1232 | struct ieee80211_local *local = sdata->local; | |
1233 | struct sta_info *sta, *tmp; | |
24723d1b | 1234 | |
34e89507 | 1235 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1236 | |
1237 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1238 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1239 | ||
ec2b774e ML |
1240 | if (sdata != sta->sdata) |
1241 | continue; | |
1242 | ||
b8da6b6a | 1243 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1244 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1245 | sta->sta.addr); | |
3f52b7e3 MP |
1246 | |
1247 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1248 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1249 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1250 | ||
34e89507 | 1251 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1252 | } |
e46a2cf9 MSS |
1253 | } |
1254 | ||
34e89507 | 1255 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1256 | } |
17741cdc | 1257 | |
686b9cb9 | 1258 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1259 | const u8 *addr, |
1260 | const u8 *localaddr) | |
17741cdc | 1261 | { |
7bedd0cf | 1262 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1263 | struct rhlist_head *tmp; |
7bedd0cf | 1264 | struct sta_info *sta; |
17741cdc | 1265 | |
686b9cb9 BG |
1266 | /* |
1267 | * Just return a random station if localaddr is NULL | |
1268 | * ... first in list. | |
1269 | */ | |
83e7e4ce | 1270 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1271 | if (localaddr && |
b203ca39 | 1272 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1273 | continue; |
f7c65594 JB |
1274 | if (!sta->uploaded) |
1275 | return NULL; | |
abe60632 | 1276 | return &sta->sta; |
f7c65594 JB |
1277 | } |
1278 | ||
abe60632 | 1279 | return NULL; |
17741cdc | 1280 | } |
686b9cb9 | 1281 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1282 | |
1283 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1284 | const u8 *addr) | |
1285 | { | |
f7c65594 | 1286 | struct sta_info *sta; |
5ed176e1 JB |
1287 | |
1288 | if (!vif) | |
1289 | return NULL; | |
1290 | ||
f7c65594 JB |
1291 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1292 | if (!sta) | |
1293 | return NULL; | |
1294 | ||
1295 | if (!sta->uploaded) | |
1296 | return NULL; | |
5ed176e1 | 1297 | |
f7c65594 | 1298 | return &sta->sta; |
5ed176e1 | 1299 | } |
17741cdc | 1300 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1301 | |
e3685e03 JB |
1302 | /* powersave support code */ |
1303 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1304 | { |
608383bf | 1305 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1306 | struct ieee80211_local *local = sdata->local; |
1307 | struct sk_buff_head pending; | |
ba8c3d6f | 1308 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1309 | unsigned long flags; |
d012a605 MP |
1310 | struct ps_data *ps; |
1311 | ||
3918edb0 FF |
1312 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1313 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1314 | u.ap); | |
1315 | ||
1316 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1317 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1318 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1319 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1320 | else |
1321 | return; | |
50a9432d | 1322 | |
c2c98fde | 1323 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1324 | |
5a306f58 | 1325 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1326 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1327 | sta->txq_buffered_tids = 0; |
af818581 | 1328 | |
30686bf7 | 1329 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1330 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1331 | |
adf8ed01 JB |
1332 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1333 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1334 | continue; | |
ba8c3d6f | 1335 | |
18667600 | 1336 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1337 | } |
1338 | ||
948d887d | 1339 | skb_queue_head_init(&pending); |
af818581 | 1340 | |
1d147bfa EG |
1341 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1342 | spin_lock(&sta->ps_lock); | |
af818581 | 1343 | /* Send all buffered frames to the station */ |
948d887d JB |
1344 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1345 | int count = skb_queue_len(&pending), tmp; | |
1346 | ||
987c285c | 1347 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1348 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1349 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1350 | tmp = skb_queue_len(&pending); |
1351 | filtered += tmp - count; | |
1352 | count = tmp; | |
1353 | ||
987c285c | 1354 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1355 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1356 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1357 | tmp = skb_queue_len(&pending); |
1358 | buffered += tmp - count; | |
1359 | } | |
1360 | ||
e3685e03 | 1361 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1362 | |
1363 | /* now we're no longer in the deliver code */ | |
1364 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1365 | ||
1366 | /* The station might have polled and then woken up before we responded, | |
1367 | * so clear these flags now to avoid them sticking around. | |
1368 | */ | |
1369 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1370 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1371 | spin_unlock(&sta->ps_lock); |
948d887d | 1372 | |
e3685e03 JB |
1373 | atomic_dec(&ps->num_sta_ps); |
1374 | ||
af818581 JB |
1375 | local->total_ps_buffered -= buffered; |
1376 | ||
c868cb35 JB |
1377 | sta_info_recalc_tim(sta); |
1378 | ||
bdcbd8e0 | 1379 | ps_dbg(sdata, |
2595d259 | 1380 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1381 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1382 | |
1383 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1384 | } |
1385 | ||
0ead2510 | 1386 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1387 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1388 | bool call_driver, bool more_data) |
af818581 | 1389 | { |
0ead2510 | 1390 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1391 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1392 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1393 | struct sk_buff *skb; |
ce662b44 JB |
1394 | int size = sizeof(*nullfunc); |
1395 | __le16 fc; | |
a74a8c84 | 1396 | bool qos = sta->sta.wme; |
ce662b44 | 1397 | struct ieee80211_tx_info *info; |
55de908a | 1398 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1399 | |
ce662b44 JB |
1400 | if (qos) { |
1401 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1402 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1403 | IEEE80211_FCTL_FROMDS); | |
1404 | } else { | |
1405 | size -= 2; | |
1406 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1407 | IEEE80211_STYPE_NULLFUNC | | |
1408 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1409 | } |
af818581 | 1410 | |
ce662b44 JB |
1411 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1412 | if (!skb) | |
1413 | return; | |
1414 | ||
1415 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1416 | ||
4df864c1 | 1417 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1418 | nullfunc->frame_control = fc; |
1419 | nullfunc->duration_id = 0; | |
1420 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1421 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1422 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1423 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1424 | |
59b66255 JB |
1425 | skb->priority = tid; |
1426 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1427 | if (qos) { |
ce662b44 JB |
1428 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1429 | ||
0ead2510 | 1430 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1431 | nullfunc->qos_ctrl |= |
1432 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1433 | if (more_data) |
1434 | nullfunc->frame_control |= | |
1435 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1436 | } | |
ce662b44 JB |
1437 | } |
1438 | ||
1439 | info = IEEE80211_SKB_CB(skb); | |
1440 | ||
1441 | /* | |
1442 | * Tell TX path to send this frame even though the | |
1443 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1444 | * exchange. Also set EOSP to indicate this packet |
1445 | * ends the poll/service period. | |
ce662b44 | 1446 | */ |
02f2f1a9 | 1447 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1448 | IEEE80211_TX_STATUS_EOSP | |
1449 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1450 | |
6b127c71 SM |
1451 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1452 | ||
b77cf4f8 JB |
1453 | if (call_driver) |
1454 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1455 | reason, false); | |
40b96408 | 1456 | |
89afe614 JB |
1457 | skb->dev = sdata->dev; |
1458 | ||
55de908a JB |
1459 | rcu_read_lock(); |
1460 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1461 | if (WARN_ON(!chanctx_conf)) { | |
1462 | rcu_read_unlock(); | |
1463 | kfree_skb(skb); | |
1464 | return; | |
1465 | } | |
1466 | ||
73c4e195 | 1467 | info->band = chanctx_conf->def.chan->band; |
08aca29a | 1468 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1469 | rcu_read_unlock(); |
ce662b44 JB |
1470 | } |
1471 | ||
0a1cb809 JB |
1472 | static int find_highest_prio_tid(unsigned long tids) |
1473 | { | |
1474 | /* lower 3 TIDs aren't ordered perfectly */ | |
1475 | if (tids & 0xF8) | |
1476 | return fls(tids) - 1; | |
1477 | /* TID 0 is BE just like TID 3 */ | |
1478 | if (tids & BIT(0)) | |
1479 | return 0; | |
1480 | return fls(tids) - 1; | |
1481 | } | |
1482 | ||
0ead2510 EG |
1483 | /* Indicates if the MORE_DATA bit should be set in the last |
1484 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1485 | * Note that driver_release_tids is relevant only if | |
1486 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1487 | */ | |
1488 | static bool | |
1489 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1490 | enum ieee80211_frame_release_type reason, | |
1491 | unsigned long driver_release_tids) | |
1492 | { | |
1493 | int ac; | |
1494 | ||
1495 | /* If the driver has data on more than one TID then | |
1496 | * certainly there's more data if we release just a | |
1497 | * single frame now (from a single TID). This will | |
1498 | * only happen for PS-Poll. | |
1499 | */ | |
1500 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1501 | hweight16(driver_release_tids) > 1) | |
1502 | return true; | |
1503 | ||
1504 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1505 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1506 | continue; |
1507 | ||
1508 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1509 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1510 | return true; | |
1511 | } | |
1512 | ||
1513 | return false; | |
1514 | } | |
1515 | ||
47086fc5 | 1516 | static void |
0ead2510 EG |
1517 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1518 | enum ieee80211_frame_release_type reason, | |
1519 | struct sk_buff_head *frames, | |
1520 | unsigned long *driver_release_tids) | |
af818581 JB |
1521 | { |
1522 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1523 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1524 | int ac; |
948d887d | 1525 | |
f9f760b4 | 1526 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1527 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1528 | unsigned long tids; |
1529 | ||
f438ceb8 | 1530 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1531 | continue; |
1532 | ||
4049e09a JB |
1533 | tids = ieee80211_tids_for_ac(ac); |
1534 | ||
f9f760b4 JB |
1535 | /* if we already have frames from software, then we can't also |
1536 | * release from hardware queues | |
1537 | */ | |
0ead2510 EG |
1538 | if (skb_queue_empty(frames)) { |
1539 | *driver_release_tids |= | |
1540 | sta->driver_buffered_tids & tids; | |
1541 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1542 | } |
948d887d | 1543 | |
0ead2510 | 1544 | if (!*driver_release_tids) { |
f9f760b4 JB |
1545 | struct sk_buff *skb; |
1546 | ||
1547 | while (n_frames > 0) { | |
1548 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1549 | if (!skb) { | |
1550 | skb = skb_dequeue( | |
1551 | &sta->ps_tx_buf[ac]); | |
1552 | if (skb) | |
1553 | local->total_ps_buffered--; | |
1554 | } | |
1555 | if (!skb) | |
1556 | break; | |
1557 | n_frames--; | |
0ead2510 | 1558 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1559 | } |
4049e09a | 1560 | } |
948d887d | 1561 | |
0ead2510 EG |
1562 | /* If we have more frames buffered on this AC, then abort the |
1563 | * loop since we can't send more data from other ACs before | |
1564 | * the buffered frames from this. | |
f9f760b4 | 1565 | */ |
948d887d | 1566 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1567 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1568 | break; |
af818581 | 1569 | } |
0ead2510 EG |
1570 | } |
1571 | ||
1572 | static void | |
1573 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1574 | int n_frames, u8 ignored_acs, | |
1575 | enum ieee80211_frame_release_type reason) | |
1576 | { | |
1577 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1578 | struct ieee80211_local *local = sdata->local; | |
1579 | unsigned long driver_release_tids = 0; | |
1580 | struct sk_buff_head frames; | |
1581 | bool more_data; | |
1582 | ||
1583 | /* Service or PS-Poll period starts */ | |
1584 | set_sta_flag(sta, WLAN_STA_SP); | |
1585 | ||
1586 | __skb_queue_head_init(&frames); | |
1587 | ||
1588 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1589 | &frames, &driver_release_tids); | |
1590 | ||
1591 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1592 | ||
1a57081a | 1593 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1594 | driver_release_tids = |
1595 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1596 | |
f9f760b4 | 1597 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1598 | int tid, ac; |
af818581 JB |
1599 | |
1600 | /* | |
ce662b44 JB |
1601 | * For PS-Poll, this can only happen due to a race condition |
1602 | * when we set the TIM bit and the station notices it, but | |
1603 | * before it can poll for the frame we expire it. | |
1604 | * | |
1605 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1606 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1607 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1608 | * more than the value specified in the Max SP Length field | |
1609 | * in the QoS Capability element from delivery-enabled ACs, | |
1610 | * that are destined for the non-AP STA. | |
1611 | * | |
1612 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1613 | */ |
af818581 | 1614 | |
ce662b44 | 1615 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1616 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1617 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1618 | break; | |
f438ceb8 | 1619 | tid = 7 - 2 * ac; |
af818581 | 1620 | |
0ead2510 | 1621 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1622 | } else if (!driver_release_tids) { |
47086fc5 JB |
1623 | struct sk_buff_head pending; |
1624 | struct sk_buff *skb; | |
40b96408 JB |
1625 | int num = 0; |
1626 | u16 tids = 0; | |
b77cf4f8 | 1627 | bool need_null = false; |
af818581 | 1628 | |
47086fc5 | 1629 | skb_queue_head_init(&pending); |
af818581 | 1630 | |
47086fc5 JB |
1631 | while ((skb = __skb_dequeue(&frames))) { |
1632 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1633 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1634 | u8 *qoshdr = NULL; |
1635 | ||
1636 | num++; | |
af818581 | 1637 | |
47086fc5 JB |
1638 | /* |
1639 | * Tell TX path to send this frame even though the | |
1640 | * STA may still remain is PS mode after this frame | |
1641 | * exchange. | |
1642 | */ | |
6b127c71 SM |
1643 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1644 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1645 | |
1646 | /* | |
1647 | * Use MoreData flag to indicate whether there are | |
1648 | * more buffered frames for this STA | |
1649 | */ | |
24b9c373 | 1650 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1651 | hdr->frame_control |= |
1652 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1653 | else |
1654 | hdr->frame_control &= | |
1655 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1656 | |
40b96408 JB |
1657 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1658 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1659 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1660 | ||
b77cf4f8 | 1661 | tids |= BIT(skb->priority); |
52a3f20c | 1662 | |
b77cf4f8 JB |
1663 | __skb_queue_tail(&pending, skb); |
1664 | ||
1665 | /* end service period after last frame or add one */ | |
1666 | if (!skb_queue_empty(&frames)) | |
1667 | continue; | |
1668 | ||
1669 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1670 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1671 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1672 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1673 | break; |
52a3f20c | 1674 | } |
deeaee19 | 1675 | |
b77cf4f8 JB |
1676 | /* For uAPSD, things are a bit more complicated. If the |
1677 | * last frame has a QoS header (i.e. is a QoS-data or | |
1678 | * QoS-nulldata frame) then just set the EOSP bit there | |
1679 | * and be done. | |
1680 | * If the frame doesn't have a QoS header (which means | |
1681 | * it should be a bufferable MMPDU) then we can't set | |
1682 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1683 | * frame to the list to send it after the MMPDU. | |
1684 | * | |
1685 | * Note that this code is only in the mac80211-release | |
1686 | * code path, we assume that the driver will not buffer | |
1687 | * anything but QoS-data frames, or if it does, will | |
1688 | * create the QoS-nulldata frame by itself if needed. | |
1689 | * | |
1690 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1691 | */ | |
1692 | if (qoshdr) { | |
1693 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1694 | |
b77cf4f8 JB |
1695 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1696 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1697 | } else { | |
1698 | /* The standard isn't completely clear on this | |
1699 | * as it says the more-data bit should be set | |
1700 | * if there are more BUs. The QoS-Null frame | |
1701 | * we're about to send isn't buffered yet, we | |
1702 | * only create it below, but let's pretend it | |
1703 | * was buffered just in case some clients only | |
1704 | * expect more-data=0 when eosp=1. | |
1705 | */ | |
1706 | hdr->frame_control |= | |
1707 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1708 | need_null = true; | |
1709 | num++; | |
1710 | } | |
1711 | break; | |
47086fc5 | 1712 | } |
af818581 | 1713 | |
40b96408 JB |
1714 | drv_allow_buffered_frames(local, sta, tids, num, |
1715 | reason, more_data); | |
1716 | ||
47086fc5 | 1717 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1718 | |
b77cf4f8 JB |
1719 | if (need_null) |
1720 | ieee80211_send_null_response( | |
0ead2510 EG |
1721 | sta, find_highest_prio_tid(tids), |
1722 | reason, false, false); | |
b77cf4f8 | 1723 | |
c868cb35 | 1724 | sta_info_recalc_tim(sta); |
af818581 | 1725 | } else { |
ba8c3d6f FF |
1726 | int tid; |
1727 | ||
af818581 | 1728 | /* |
4049e09a JB |
1729 | * We need to release a frame that is buffered somewhere in the |
1730 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1731 | * Note that the driver also has to check the number of frames |
1732 | * on the TIDs we're releasing from - if there are more than | |
1733 | * n_frames it has to set the more-data bit (if we didn't ask | |
1734 | * it to set it anyway due to other buffered frames); if there | |
1735 | * are fewer than n_frames it has to make sure to adjust that | |
1736 | * to allow the service period to end properly. | |
4049e09a JB |
1737 | */ |
1738 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1739 | n_frames, reason, more_data); |
4049e09a JB |
1740 | |
1741 | /* | |
1742 | * Note that we don't recalculate the TIM bit here as it would | |
1743 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1744 | * that the TID(s) became empty before returning here from the |
4049e09a | 1745 | * release function. |
f9f760b4 | 1746 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1747 | * became empty or we find that a txq became empty, we'll do the |
1748 | * TIM recalculation. | |
af818581 | 1749 | */ |
ba8c3d6f FF |
1750 | |
1751 | if (!sta->sta.txq[0]) | |
1752 | return; | |
1753 | ||
1754 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
adf8ed01 JB |
1755 | if (!sta->sta.txq[tid] || |
1756 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1757 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1758 | continue; |
1759 | ||
1760 | sta_info_recalc_tim(sta); | |
1761 | break; | |
1762 | } | |
af818581 JB |
1763 | } |
1764 | } | |
1765 | ||
47086fc5 JB |
1766 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1767 | { | |
1768 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1769 | ||
1770 | /* | |
1771 | * If all ACs are delivery-enabled then we should reply | |
1772 | * from any of them, if only some are enabled we reply | |
1773 | * only from the non-enabled ones. | |
1774 | */ | |
1775 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1776 | ignore_for_response = 0; | |
1777 | ||
1778 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1779 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1780 | } | |
1781 | ||
1782 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1783 | { | |
1784 | int n_frames = sta->sta.max_sp; | |
1785 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1786 | ||
1787 | /* | |
1788 | * If we ever grow support for TSPEC this might happen if | |
1789 | * the TSPEC update from hostapd comes in between a trigger | |
1790 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1791 | * actually getting called. | |
1792 | */ | |
1793 | if (!delivery_enabled) | |
1794 | return; | |
1795 | ||
47086fc5 JB |
1796 | switch (sta->sta.max_sp) { |
1797 | case 1: | |
1798 | n_frames = 2; | |
1799 | break; | |
1800 | case 2: | |
1801 | n_frames = 4; | |
1802 | break; | |
1803 | case 3: | |
1804 | n_frames = 6; | |
1805 | break; | |
1806 | case 0: | |
1807 | /* XXX: what is a good value? */ | |
13a8098a | 1808 | n_frames = 128; |
47086fc5 JB |
1809 | break; |
1810 | } | |
1811 | ||
1812 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1813 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1814 | } | |
1815 | ||
af818581 JB |
1816 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1817 | struct ieee80211_sta *pubsta, bool block) | |
1818 | { | |
1819 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1820 | ||
b5878a2d JB |
1821 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1822 | ||
5ac2e350 | 1823 | if (block) { |
c2c98fde | 1824 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1825 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1826 | return; |
1827 | } | |
1828 | ||
1829 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1830 | return; | |
1831 | ||
1832 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1833 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1834 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1835 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1836 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1837 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1838 | /* must be asleep in this case */ | |
1839 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1840 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1841 | } else { | |
1842 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1843 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1844 | } |
af818581 JB |
1845 | } |
1846 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1847 | |
e943789e | 1848 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1849 | { |
1850 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1851 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1852 | |
1853 | trace_api_eosp(local, pubsta); | |
1854 | ||
e943789e | 1855 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1856 | } |
e943789e | 1857 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1858 | |
0ead2510 EG |
1859 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1860 | { | |
1861 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1862 | enum ieee80211_frame_release_type reason; | |
1863 | bool more_data; | |
1864 | ||
1865 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1866 | ||
1867 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1868 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1869 | reason, 0); | |
1870 | ||
1871 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1872 | } | |
1873 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1874 | ||
042ec453 JB |
1875 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1876 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1877 | { |
1878 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1879 | ||
5a306f58 | 1880 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1881 | return; |
1882 | ||
1b000789 JB |
1883 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1884 | ||
948d887d JB |
1885 | if (buffered) |
1886 | set_bit(tid, &sta->driver_buffered_tids); | |
1887 | else | |
1888 | clear_bit(tid, &sta->driver_buffered_tids); | |
1889 | ||
c868cb35 | 1890 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1891 | } |
042ec453 | 1892 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1893 | |
2433647b THJ |
1894 | void ieee80211_register_airtime(struct ieee80211_txq *txq, |
1895 | u32 tx_airtime, u32 rx_airtime) | |
b4809e94 | 1896 | { |
2433647b THJ |
1897 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif); |
1898 | struct ieee80211_local *local = sdata->local; | |
1899 | u64 weight_sum, weight_sum_reciprocal; | |
1900 | struct airtime_sched_info *air_sched; | |
1901 | struct airtime_info *air_info; | |
b4809e94 THJ |
1902 | u32 airtime = 0; |
1903 | ||
2433647b THJ |
1904 | air_sched = &local->airtime[txq->ac]; |
1905 | air_info = to_airtime_info(txq); | |
1906 | ||
1907 | if (local->airtime_flags & AIRTIME_USE_TX) | |
b4809e94 | 1908 | airtime += tx_airtime; |
2433647b | 1909 | if (local->airtime_flags & AIRTIME_USE_RX) |
b4809e94 THJ |
1910 | airtime += rx_airtime; |
1911 | ||
2433647b THJ |
1912 | /* Weights scale so the unit weight is 256 */ |
1913 | airtime <<= 8; | |
1914 | ||
1915 | spin_lock_bh(&air_sched->lock); | |
1916 | ||
1917 | air_info->tx_airtime += tx_airtime; | |
1918 | air_info->rx_airtime += rx_airtime; | |
1919 | ||
1920 | if (air_sched->weight_sum) { | |
1921 | weight_sum = air_sched->weight_sum; | |
1922 | weight_sum_reciprocal = air_sched->weight_sum_reciprocal; | |
1923 | } else { | |
1924 | weight_sum = air_info->weight; | |
1925 | weight_sum_reciprocal = air_info->weight_reciprocal; | |
1926 | } | |
1927 | ||
1928 | /* Round the calculation of global vt */ | |
1929 | air_sched->v_t += (u64)((airtime + (weight_sum >> 1)) * | |
1930 | weight_sum_reciprocal) >> IEEE80211_RECIPROCAL_SHIFT_64; | |
1931 | air_info->v_t += (u32)((airtime + (air_info->weight >> 1)) * | |
1932 | air_info->weight_reciprocal) >> IEEE80211_RECIPROCAL_SHIFT_32; | |
1933 | ieee80211_resort_txq(&local->hw, txq); | |
1934 | ||
1935 | spin_unlock_bh(&air_sched->lock); | |
1936 | } | |
1937 | ||
1938 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, | |
1939 | u32 tx_airtime, u32 rx_airtime) | |
1940 | { | |
1941 | struct ieee80211_txq *txq = pubsta->txq[tid]; | |
1942 | ||
1943 | if (!txq) | |
1944 | return; | |
1945 | ||
1946 | ieee80211_register_airtime(txq, tx_airtime, rx_airtime); | |
b4809e94 THJ |
1947 | } |
1948 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
1949 | ||
3ace10f5 KY |
1950 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
1951 | struct sta_info *sta, u8 ac, | |
1952 | u16 tx_airtime, bool tx_completed) | |
1953 | { | |
1954 | int tx_pending; | |
1955 | ||
911bde0f THJ |
1956 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
1957 | return; | |
1958 | ||
3ace10f5 KY |
1959 | if (!tx_completed) { |
1960 | if (sta) | |
1961 | atomic_add(tx_airtime, | |
1962 | &sta->airtime[ac].aql_tx_pending); | |
1963 | ||
1964 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
1965 | return; | |
1966 | } | |
1967 | ||
1968 | if (sta) { | |
1969 | tx_pending = atomic_sub_return(tx_airtime, | |
1970 | &sta->airtime[ac].aql_tx_pending); | |
04e35caa | 1971 | if (tx_pending < 0) |
3ace10f5 KY |
1972 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, |
1973 | tx_pending, 0); | |
1974 | } | |
1975 | ||
1976 | tx_pending = atomic_sub_return(tx_airtime, | |
1977 | &local->aql_total_pending_airtime); | |
1978 | if (WARN_ONCE(tx_pending < 0, | |
1979 | "Device %s AC %d pending airtime underflow: %u, %u", | |
1980 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
1981 | tx_airtime)) | |
1982 | atomic_cmpxchg(&local->aql_total_pending_airtime, | |
1983 | tx_pending, 0); | |
1984 | } | |
1985 | ||
83d5cc01 JB |
1986 | int sta_info_move_state(struct sta_info *sta, |
1987 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1988 | { |
8bf11d8d | 1989 | might_sleep(); |
d9a7ddb0 JB |
1990 | |
1991 | if (sta->sta_state == new_state) | |
1992 | return 0; | |
1993 | ||
f09603a2 JB |
1994 | /* check allowed transitions first */ |
1995 | ||
1996 | switch (new_state) { | |
1997 | case IEEE80211_STA_NONE: | |
1998 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1999 | return -EINVAL; | |
2000 | break; | |
2001 | case IEEE80211_STA_AUTH: | |
2002 | if (sta->sta_state != IEEE80211_STA_NONE && | |
2003 | sta->sta_state != IEEE80211_STA_ASSOC) | |
2004 | return -EINVAL; | |
2005 | break; | |
2006 | case IEEE80211_STA_ASSOC: | |
2007 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
2008 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
2009 | return -EINVAL; | |
2010 | break; | |
2011 | case IEEE80211_STA_AUTHORIZED: | |
2012 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
2013 | return -EINVAL; | |
2014 | break; | |
2015 | default: | |
2016 | WARN(1, "invalid state %d", new_state); | |
2017 | return -EINVAL; | |
2018 | } | |
2019 | ||
bdcbd8e0 JB |
2020 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
2021 | sta->sta.addr, new_state); | |
f09603a2 JB |
2022 | |
2023 | /* | |
2024 | * notify the driver before the actual changes so it can | |
2025 | * fail the transition | |
2026 | */ | |
2027 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
2028 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
2029 | sta->sta_state, new_state); | |
2030 | if (err) | |
2031 | return err; | |
2032 | } | |
2033 | ||
2034 | /* reflect the change in all state variables */ | |
2035 | ||
d9a7ddb0 JB |
2036 | switch (new_state) { |
2037 | case IEEE80211_STA_NONE: | |
2038 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
2039 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
2040 | break; |
2041 | case IEEE80211_STA_AUTH: | |
a7201a6c | 2042 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 2043 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 2044 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 2045 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 2046 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
2047 | if (!sta->sta.support_p2p_ps) |
2048 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 2049 | } |
d9a7ddb0 JB |
2050 | break; |
2051 | case IEEE80211_STA_ASSOC: | |
29623892 | 2052 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 2053 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
9cf02338 | 2054 | sta->assoc_at = ktime_get_boottime_ns(); |
a7201a6c | 2055 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
2056 | if (!sta->sta.support_p2p_ps) |
2057 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 2058 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 2059 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 2060 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2061 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 2062 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 2063 | } |
d9a7ddb0 JB |
2064 | break; |
2065 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 2066 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 2067 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 2068 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2069 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 2070 | ieee80211_check_fast_rx(sta); |
f09603a2 | 2071 | } |
3e493173 JM |
2072 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
2073 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
2074 | cfg80211_send_layer2_update(sta->sdata->dev, | |
2075 | sta->sta.addr); | |
d9a7ddb0 JB |
2076 | break; |
2077 | default: | |
f09603a2 | 2078 | break; |
d9a7ddb0 JB |
2079 | } |
2080 | ||
d9a7ddb0 JB |
2081 | sta->sta_state = new_state; |
2082 | ||
2083 | return 0; | |
2084 | } | |
687da132 EG |
2085 | |
2086 | u8 sta_info_tx_streams(struct sta_info *sta) | |
2087 | { | |
2088 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
2089 | u8 rx_streams; | |
2090 | ||
2091 | if (!sta->sta.ht_cap.ht_supported) | |
2092 | return 1; | |
2093 | ||
2094 | if (sta->sta.vht_cap.vht_supported) { | |
2095 | int i; | |
2096 | u16 tx_mcs_map = | |
2097 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
2098 | ||
2099 | for (i = 7; i >= 0; i--) | |
2100 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
2101 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
2102 | return i + 1; | |
2103 | } | |
2104 | ||
2105 | if (ht_cap->mcs.rx_mask[3]) | |
2106 | rx_streams = 4; | |
2107 | else if (ht_cap->mcs.rx_mask[2]) | |
2108 | rx_streams = 3; | |
2109 | else if (ht_cap->mcs.rx_mask[1]) | |
2110 | rx_streams = 2; | |
2111 | else | |
2112 | rx_streams = 1; | |
2113 | ||
2114 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
2115 | return rx_streams; | |
2116 | ||
2117 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
2118 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
2119 | } | |
b7ffbd7e | 2120 | |
c9c5962b JB |
2121 | static struct ieee80211_sta_rx_stats * |
2122 | sta_get_last_rx_stats(struct sta_info *sta) | |
2123 | { | |
2124 | struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; | |
c9c5962b JB |
2125 | int cpu; |
2126 | ||
d656a4c6 | 2127 | if (!sta->pcpu_rx_stats) |
c9c5962b JB |
2128 | return stats; |
2129 | ||
2130 | for_each_possible_cpu(cpu) { | |
2131 | struct ieee80211_sta_rx_stats *cpustats; | |
2132 | ||
2133 | cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2134 | ||
2135 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2136 | stats = cpustats; | |
2137 | } | |
2138 | ||
2139 | return stats; | |
2140 | } | |
2141 | ||
41cbb0f5 | 2142 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2143 | struct rate_info *rinfo) |
fbd6ff5c | 2144 | { |
dcba665b | 2145 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2146 | |
dcba665b | 2147 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2148 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2149 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2150 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2151 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2152 | if (STA_STATS_GET(SGI, rate)) | |
2153 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2154 | break; |
2155 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2156 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2157 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2158 | if (STA_STATS_GET(SGI, rate)) | |
2159 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2160 | break; |
2161 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2162 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2163 | u16 brate; |
4f6b1b3d | 2164 | unsigned int shift; |
dcba665b JB |
2165 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2166 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2167 | |
dcba665b | 2168 | sband = local->hw.wiphy->bands[band]; |
8b783d10 TP |
2169 | |
2170 | if (WARN_ON_ONCE(!sband->bitrates)) | |
2171 | break; | |
2172 | ||
dcba665b | 2173 | brate = sband->bitrates[rate_idx].bitrate; |
4f6b1b3d JB |
2174 | if (rinfo->bw == RATE_INFO_BW_5) |
2175 | shift = 2; | |
2176 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2177 | shift = 1; | |
2178 | else | |
2179 | shift = 0; | |
fbd6ff5c | 2180 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2181 | break; |
2182 | } | |
41cbb0f5 LC |
2183 | case STA_STATS_RATE_TYPE_HE: |
2184 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2185 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2186 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2187 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2188 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2189 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2190 | break; | |
fbd6ff5c | 2191 | } |
4f6b1b3d JB |
2192 | } |
2193 | ||
a17d93ff | 2194 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2195 | { |
6aa7de05 | 2196 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2197 | |
4f6b1b3d | 2198 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2199 | return -EINVAL; |
2200 | ||
2201 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2202 | return 0; | |
fbd6ff5c JB |
2203 | } |
2204 | ||
b255b72b SM |
2205 | static inline u64 sta_get_tidstats_msdu(struct ieee80211_sta_rx_stats *rxstats, |
2206 | int tid) | |
2207 | { | |
2208 | unsigned int start; | |
2209 | u64 value; | |
2210 | ||
2211 | do { | |
2212 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2213 | value = rxstats->msdu[tid]; | |
2214 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2215 | ||
2216 | return value; | |
2217 | } | |
2218 | ||
0f9c5a61 JB |
2219 | static void sta_set_tidstats(struct sta_info *sta, |
2220 | struct cfg80211_tid_stats *tidstats, | |
2221 | int tid) | |
2222 | { | |
2223 | struct ieee80211_local *local = sta->local; | |
b255b72b | 2224 | int cpu; |
0f9c5a61 JB |
2225 | |
2226 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
d656a4c6 | 2227 | tidstats->rx_msdu += sta_get_tidstats_msdu(&sta->rx_stats, tid); |
0f9c5a61 | 2228 | |
b255b72b SM |
2229 | if (sta->pcpu_rx_stats) { |
2230 | for_each_possible_cpu(cpu) { | |
2231 | struct ieee80211_sta_rx_stats *cpurxs; | |
2232 | ||
2233 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2234 | tidstats->rx_msdu += | |
2235 | sta_get_tidstats_msdu(cpurxs, tid); | |
2236 | } | |
2237 | } | |
0f9c5a61 JB |
2238 | |
2239 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2240 | } | |
2241 | ||
2242 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2243 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
2244 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; | |
2245 | } | |
2246 | ||
2247 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2248 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2249 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
2250 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; | |
2251 | } | |
2252 | ||
2253 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2254 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2255 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
2256 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; | |
2257 | } | |
2fe4a29a THJ |
2258 | |
2259 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { | |
2260 | spin_lock_bh(&local->fq.lock); | |
2261 | rcu_read_lock(); | |
2262 | ||
2263 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2264 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2265 | to_txq_info(sta->sta.txq[tid])); | |
2266 | ||
2267 | rcu_read_unlock(); | |
2268 | spin_unlock_bh(&local->fq.lock); | |
2269 | } | |
0f9c5a61 JB |
2270 | } |
2271 | ||
c9c5962b JB |
2272 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2273 | { | |
2274 | unsigned int start; | |
2275 | u64 value; | |
2276 | ||
2277 | do { | |
2278 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2279 | value = rxstats->bytes; | |
2280 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2281 | ||
2282 | return value; | |
2283 | } | |
2284 | ||
0fdf1493 JB |
2285 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2286 | bool tidstats) | |
b7ffbd7e JB |
2287 | { |
2288 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2289 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2290 | u32 thr = 0; |
c9c5962b JB |
2291 | int i, ac, cpu; |
2292 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2293 | ||
2294 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2295 | |
2296 | sinfo->generation = sdata->local->sta_generation; | |
2297 | ||
225b8189 JB |
2298 | /* do before driver, so beacon filtering drivers have a |
2299 | * chance to e.g. just add the number of filtered beacons | |
2300 | * (or just modify the value entirely, of course) | |
2301 | */ | |
2302 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2303 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
2304 | ||
2b9a7e1b | 2305 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
a4217750 OE |
2306 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2307 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2308 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2309 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2310 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2311 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2312 | |
2313 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
2314 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
a4217750 | 2315 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2316 | } |
b7ffbd7e | 2317 | |
84b00607 | 2318 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2319 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2320 | sinfo->inactive_time = |
b8da6b6a | 2321 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2322 | |
a4217750 OE |
2323 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2324 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2325 | sinfo->tx_bytes = 0; |
2326 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2327 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
a4217750 | 2328 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2329 | } |
2330 | ||
a4217750 | 2331 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2332 | sinfo->tx_packets = 0; |
2333 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2334 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
a4217750 | 2335 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2336 | } |
2337 | ||
a4217750 OE |
2338 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2339 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
d656a4c6 | 2340 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
c9c5962b JB |
2341 | |
2342 | if (sta->pcpu_rx_stats) { | |
2343 | for_each_possible_cpu(cpu) { | |
2344 | struct ieee80211_sta_rx_stats *cpurxs; | |
2345 | ||
2346 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2347 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); | |
2348 | } | |
2349 | } | |
0f9c5a61 | 2350 | |
a4217750 | 2351 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2352 | } |
2353 | ||
a4217750 | 2354 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 2355 | sinfo->rx_packets = sta->rx_stats.packets; |
c9c5962b JB |
2356 | if (sta->pcpu_rx_stats) { |
2357 | for_each_possible_cpu(cpu) { | |
2358 | struct ieee80211_sta_rx_stats *cpurxs; | |
2359 | ||
2360 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2361 | sinfo->rx_packets += cpurxs->packets; | |
2362 | } | |
2363 | } | |
a4217750 | 2364 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2365 | } |
2366 | ||
a4217750 | 2367 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 2368 | sinfo->tx_retries = sta->status_stats.retry_count; |
a4217750 | 2369 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2370 | } |
2371 | ||
a4217750 | 2372 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 2373 | sinfo->tx_failed = sta->status_stats.retry_failed; |
a4217750 | 2374 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2375 | } |
2b9a7e1b | 2376 | |
b4809e94 THJ |
2377 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2378 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2379 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2380 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2381 | } | |
2382 | ||
2383 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2384 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2385 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2386 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2387 | } | |
2388 | ||
2389 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
2433647b | 2390 | sinfo->airtime_weight = sta->airtime[0].weight; |
b4809e94 THJ |
2391 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); |
2392 | } | |
2393 | ||
e5a9f8d0 | 2394 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
c9c5962b JB |
2395 | if (sta->pcpu_rx_stats) { |
2396 | for_each_possible_cpu(cpu) { | |
2397 | struct ieee80211_sta_rx_stats *cpurxs; | |
2398 | ||
2399 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
e165bc02 | 2400 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2401 | } |
2402 | } | |
b7ffbd7e | 2403 | |
225b8189 JB |
2404 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2405 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2406 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2407 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2408 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2409 | } | |
2410 | ||
30686bf7 JB |
2411 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2412 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2413 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2414 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2415 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2416 | } |
2417 | ||
c9c5962b | 2418 | if (!sta->pcpu_rx_stats && |
a4217750 | 2419 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2420 | sinfo->signal_avg = |
0be6ed13 | 2421 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
a4217750 | 2422 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2423 | } |
b7ffbd7e | 2424 | } |
2b9a7e1b | 2425 | |
c9c5962b JB |
2426 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2427 | * the sta->rx_stats struct, so the check here is fine with and without | |
2428 | * pcpu statistics | |
2429 | */ | |
2430 | if (last_rxstats->chains && | |
a4217750 OE |
2431 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2432 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2433 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
c9c5962b | 2434 | if (!sta->pcpu_rx_stats) |
a4217750 | 2435 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2436 | |
2437 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2438 | |
b7ffbd7e | 2439 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2440 | sinfo->chain_signal[i] = |
c9c5962b | 2441 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2442 | sinfo->chain_signal_avg[i] = |
0be6ed13 | 2443 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2444 | } |
2445 | } | |
2446 | ||
a4217750 | 2447 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
2448 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
2449 | &sinfo->txrate); | |
a4217750 | 2450 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2451 | } |
2452 | ||
a4217750 | 2453 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))) { |
a17d93ff | 2454 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2455 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2456 | } |
b7ffbd7e | 2457 | |
0fdf1493 | 2458 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2459 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2460 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2461 | } |
2462 | ||
b7ffbd7e JB |
2463 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2464 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2465 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2466 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2467 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2468 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2469 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a | 2470 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
1303a51c MT |
2471 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE) | |
2472 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_AS); | |
b7ffbd7e | 2473 | |
433f5bc1 JB |
2474 | sinfo->llid = sta->mesh->llid; |
2475 | sinfo->plid = sta->mesh->plid; | |
2476 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2477 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2478 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2479 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2480 | } |
433f5bc1 JB |
2481 | sinfo->local_pm = sta->mesh->local_pm; |
2482 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2483 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2484 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
1303a51c | 2485 | sinfo->connected_to_as = sta->mesh->connected_to_as; |
b7ffbd7e JB |
2486 | #endif |
2487 | } | |
2488 | ||
2489 | sinfo->bss_param.flags = 0; | |
2490 | if (sdata->vif.bss_conf.use_cts_prot) | |
2491 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2492 | if (sdata->vif.bss_conf.use_short_preamble) | |
2493 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2494 | if (sdata->vif.bss_conf.use_short_slot) | |
2495 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2496 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2497 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2498 | ||
2499 | sinfo->sta_flags.set = 0; | |
2500 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2501 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2502 | BIT(NL80211_STA_FLAG_WME) | | |
2503 | BIT(NL80211_STA_FLAG_MFP) | | |
2504 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2505 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2506 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2507 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2508 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2509 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2510 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2511 | if (sta->sta.wme) |
b7ffbd7e JB |
2512 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2513 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2514 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2515 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2516 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2517 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2518 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2519 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2520 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2521 | ||
3b17fbf8 MA |
2522 | thr = sta_get_expected_throughput(sta); |
2523 | ||
2524 | if (thr != 0) { | |
a4217750 | 2525 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2526 | sinfo->expected_throughput = thr; |
2527 | } | |
a78b26ff VN |
2528 | |
2529 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
2530 | sta->status_stats.ack_signal_filled) { | |
2531 | sinfo->ack_signal = sta->status_stats.last_ack_signal; | |
2532 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); | |
2533 | } | |
cc60dbbf | 2534 | |
9c06602b BP |
2535 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
2536 | sta->status_stats.ack_signal_filled) { | |
cc60dbbf BP |
2537 | sinfo->avg_ack_signal = |
2538 | -(s8)ewma_avg_signal_read( | |
2539 | &sta->status_stats.avg_ack_signal); | |
2540 | sinfo->filled |= | |
9c06602b | 2541 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2542 | } |
ab60633c NM |
2543 | |
2544 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2545 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2546 | sinfo->airtime_link_metric = | |
2547 | airtime_link_metric_get(local, sta); | |
2548 | } | |
3b17fbf8 MA |
2549 | } |
2550 | ||
2551 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2552 | { | |
2553 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2554 | struct ieee80211_local *local = sdata->local; | |
2555 | struct rate_control_ref *ref = NULL; | |
2556 | u32 thr = 0; | |
2557 | ||
2558 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2559 | ref = local->rate_ctrl; | |
2560 | ||
b7ffbd7e JB |
2561 | /* check if the driver has a SW RC implementation */ |
2562 | if (ref && ref->ops->get_expected_throughput) | |
2563 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2564 | else | |
4fdbc67a | 2565 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2566 | |
3b17fbf8 | 2567 | return thr; |
b7ffbd7e | 2568 | } |
b8da6b6a JB |
2569 | |
2570 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2571 | { | |
c9c5962b JB |
2572 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2573 | ||
285531f9 AZ |
2574 | if (!sta->status_stats.last_ack || |
2575 | time_after(stats->last_rx, sta->status_stats.last_ack)) | |
c9c5962b | 2576 | return stats->last_rx; |
b8da6b6a JB |
2577 | return sta->status_stats.last_ack; |
2578 | } | |
484a54c2 THJ |
2579 | |
2580 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2581 | { | |
2582 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2583 | return; | |
2584 | ||
2585 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2586 | sta->cparams.target = MS2TIME(50); | |
2587 | sta->cparams.interval = MS2TIME(300); | |
2588 | sta->cparams.ecn = false; | |
2589 | } else { | |
2590 | sta->cparams.target = MS2TIME(20); | |
2591 | sta->cparams.interval = MS2TIME(100); | |
2592 | sta->cparams.ecn = true; | |
2593 | } | |
2594 | } | |
2595 | ||
2596 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2597 | u32 thr) | |
2598 | { | |
2599 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2600 | ||
2601 | sta_update_codel_params(sta, thr); | |
2602 | } |