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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 |
b16798f5 | 7 | * Copyright (C) 2018-2020 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 | ||
d0709a65 | 234 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 235 | if (sdata != sta->sdata) |
2a8ca29a | 236 | continue; |
ee385855 LCC |
237 | if (i < idx) { |
238 | ++i; | |
239 | continue; | |
ee385855 | 240 | } |
2a8ca29a | 241 | return sta; |
ee385855 | 242 | } |
ee385855 LCC |
243 | |
244 | return NULL; | |
245 | } | |
f0706e82 | 246 | |
93e5deb1 | 247 | /** |
d9a7ddb0 | 248 | * sta_info_free - free STA |
93e5deb1 | 249 | * |
6ef307bc | 250 | * @local: pointer to the global information |
93e5deb1 JB |
251 | * @sta: STA info to free |
252 | * | |
253 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
254 | * that may happen before sta_info_insert(). It may only be |
255 | * called when sta_info_insert() has not been attempted (and | |
256 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 257 | */ |
d9a7ddb0 | 258 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 259 | { |
889cbb91 | 260 | if (sta->rate_ctrl) |
af65cd96 | 261 | rate_control_free_sta(sta); |
93e5deb1 | 262 | |
bdcbd8e0 | 263 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 264 | |
ba8c3d6f FF |
265 | if (sta->sta.txq[0]) |
266 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 267 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
268 | #ifdef CONFIG_MAC80211_MESH |
269 | kfree(sta->mesh); | |
270 | #endif | |
c9c5962b | 271 | free_percpu(sta->pcpu_rx_stats); |
93e5deb1 JB |
272 | kfree(sta); |
273 | } | |
274 | ||
4d33960b | 275 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
276 | static int sta_info_hash_add(struct ieee80211_local *local, |
277 | struct sta_info *sta) | |
f0706e82 | 278 | { |
83e7e4ce HX |
279 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
280 | sta_rht_params); | |
f0706e82 | 281 | } |
f0706e82 | 282 | |
5ac2e350 | 283 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
284 | { |
285 | struct sta_info *sta; | |
286 | ||
5ac2e350 | 287 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
288 | |
289 | if (sta->dead) | |
290 | return; | |
291 | ||
5ac2e350 JB |
292 | local_bh_disable(); |
293 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 294 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 295 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 296 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 297 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 298 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 299 | local_bh_enable(); |
af818581 JB |
300 | } |
301 | ||
af65cd96 JB |
302 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
303 | struct sta_info *sta, gfp_t gfp) | |
304 | { | |
30686bf7 | 305 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
306 | return 0; |
307 | ||
889cbb91 | 308 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 309 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 310 | sta, gfp); |
889cbb91 | 311 | if (!sta->rate_ctrl_priv) |
af65cd96 | 312 | return -ENOMEM; |
af65cd96 JB |
313 | |
314 | return 0; | |
315 | } | |
316 | ||
73651ee6 | 317 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 318 | const u8 *addr, gfp_t gfp) |
f0706e82 | 319 | { |
d0709a65 | 320 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 321 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 322 | struct sta_info *sta; |
16c5f15c | 323 | int i; |
f0706e82 | 324 | |
ba8c3d6f | 325 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 326 | if (!sta) |
73651ee6 | 327 | return NULL; |
f0706e82 | 328 | |
c9c5962b JB |
329 | if (ieee80211_hw_check(hw, USES_RSS)) { |
330 | sta->pcpu_rx_stats = | |
95f3ce6a | 331 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
c9c5962b JB |
332 | if (!sta->pcpu_rx_stats) |
333 | goto free; | |
334 | } | |
335 | ||
07346f81 | 336 | spin_lock_init(&sta->lock); |
1d147bfa | 337 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 338 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 339 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 340 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 341 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
342 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
343 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
344 | if (!sta->mesh) | |
345 | goto free; | |
4c02d62f | 346 | sta->mesh->plink_sta = sta; |
433f5bc1 JB |
347 | spin_lock_init(&sta->mesh->plink_lock); |
348 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
349 | !sdata->u.mesh.user_mpm) | |
4c02d62f KC |
350 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
351 | 0); | |
433f5bc1 JB |
352 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
353 | } | |
87f59c70 | 354 | #endif |
07346f81 | 355 | |
ac100ce5 | 356 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 357 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
480dd46b MA |
358 | sta->sta.max_rx_aggregation_subframes = |
359 | local->hw.max_rx_aggregation_subframes; | |
360 | ||
96fc6efb AW |
361 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
362 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
363 | * references to is not NULL. To not use the initial Rx-only key | |
364 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
365 | * which always will refer to a NULL key. | |
366 | */ | |
367 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
368 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
369 | ||
d0709a65 JB |
370 | sta->local = local; |
371 | sta->sdata = sdata; | |
e5a9f8d0 | 372 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 373 | |
0f9c5a61 JB |
374 | u64_stats_init(&sta->rx_stats.syncp); |
375 | ||
71ec375c JB |
376 | sta->sta_state = IEEE80211_STA_NONE; |
377 | ||
b6da911b LK |
378 | /* Mark TID as unreserved */ |
379 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
380 | ||
84b00607 | 381 | sta->last_connected = ktime_get_seconds(); |
0be6ed13 | 382 | ewma_signal_init(&sta->rx_stats_avg.signal); |
cc60dbbf | 383 | ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
0be6ed13 JB |
384 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
385 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); | |
541a45a1 | 386 | |
ba8c3d6f FF |
387 | if (local->ops->wake_tx_queue) { |
388 | void *txq_data; | |
389 | int size = sizeof(struct txq_info) + | |
390 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
391 | ||
392 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
393 | if (!txq_data) | |
394 | goto free; | |
395 | ||
396 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
397 | struct txq_info *txq = txq_data + i * size; | |
398 | ||
adf8ed01 | 399 | /* might not do anything for the bufferable MMPDU TXQ */ |
fa962b92 | 400 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 401 | } |
abfbc3af | 402 | } |
f0706e82 | 403 | |
ba8c3d6f FF |
404 | if (sta_prepare_rate_control(local, sta, gfp)) |
405 | goto free_txq; | |
406 | ||
b4809e94 THJ |
407 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
408 | ||
948d887d JB |
409 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
410 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
411 | skb_queue_head_init(&sta->tx_filtered[i]); | |
b4809e94 | 412 | sta->airtime[i].deficit = sta->airtime_weight; |
3ace10f5 KY |
413 | atomic_set(&sta->airtime[i].aql_tx_pending, 0); |
414 | sta->airtime[i].aql_limit_low = local->aql_txq_limit_low[i]; | |
415 | sta->airtime[i].aql_limit_high = local->aql_txq_limit_high[i]; | |
948d887d | 416 | } |
73651ee6 | 417 | |
5a306f58 | 418 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 419 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 420 | |
bd718fc1 JB |
421 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
422 | u32 mandatory = 0; | |
423 | int r; | |
424 | ||
425 | if (!hw->wiphy->bands[i]) | |
426 | continue; | |
427 | ||
428 | switch (i) { | |
429 | case NL80211_BAND_2GHZ: | |
430 | /* | |
431 | * We use both here, even if we cannot really know for | |
432 | * sure the station will support both, but the only use | |
433 | * for this is when we don't know anything yet and send | |
434 | * management frames, and then we'll pick the lowest | |
435 | * possible rate anyway. | |
436 | * If we don't include _G here, we cannot find a rate | |
437 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
438 | */ | |
439 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
440 | IEEE80211_RATE_MANDATORY_G; | |
441 | break; | |
442 | case NL80211_BAND_5GHZ: | |
443 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
444 | break; | |
445 | case NL80211_BAND_60GHZ: | |
446 | WARN_ON(1); | |
447 | mandatory = 0; | |
448 | break; | |
449 | } | |
450 | ||
451 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
452 | struct ieee80211_rate *rate; | |
453 | ||
454 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
455 | ||
456 | if (!(rate->flags & mandatory)) | |
457 | continue; | |
458 | sta->sta.supp_rates[i] |= BIT(r); | |
459 | } | |
460 | } | |
461 | ||
af0ed69b | 462 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
463 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
464 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
21a8e9dd MSS |
465 | struct ieee80211_supported_band *sband; |
466 | u8 smps; | |
467 | ||
468 | sband = ieee80211_get_sband(sdata); | |
469 | if (!sband) | |
470 | goto free_txq; | |
471 | ||
472 | smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> | |
473 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
687da132 EG |
474 | /* |
475 | * Assume that hostapd advertises our caps in the beacon and | |
476 | * this is the known_smps_mode for a station that just assciated | |
477 | */ | |
478 | switch (smps) { | |
479 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
480 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
481 | break; | |
482 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
483 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
484 | break; | |
485 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
486 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
487 | break; | |
488 | default: | |
489 | WARN_ON(1); | |
490 | } | |
491 | } | |
af0ed69b | 492 | |
6e0456b5 FF |
493 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
494 | ||
484a54c2 THJ |
495 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
496 | sta->cparams.target = MS2TIME(20); | |
497 | sta->cparams.interval = MS2TIME(100); | |
498 | sta->cparams.ecn = true; | |
499 | ||
bdcbd8e0 | 500 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 501 | |
abfbc3af | 502 | return sta; |
ba8c3d6f FF |
503 | |
504 | free_txq: | |
505 | if (sta->sta.txq[0]) | |
506 | kfree(to_txq_info(sta->sta.txq[0])); | |
507 | free: | |
d78d9ee9 | 508 | free_percpu(sta->pcpu_rx_stats); |
433f5bc1 JB |
509 | #ifdef CONFIG_MAC80211_MESH |
510 | kfree(sta->mesh); | |
511 | #endif | |
ba8c3d6f FF |
512 | kfree(sta); |
513 | return NULL; | |
73651ee6 JB |
514 | } |
515 | ||
8c71df7a | 516 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 517 | { |
34e89507 | 518 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 519 | |
03e4497e JB |
520 | /* |
521 | * Can't be a WARN_ON because it can be triggered through a race: | |
522 | * something inserts a STA (on one CPU) without holding the RTNL | |
523 | * and another CPU turns off the net device. | |
524 | */ | |
8c71df7a GE |
525 | if (unlikely(!ieee80211_sdata_running(sdata))) |
526 | return -ENETDOWN; | |
03e4497e | 527 | |
b203ca39 | 528 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
529 | is_multicast_ether_addr(sta->sta.addr))) |
530 | return -EINVAL; | |
531 | ||
83e7e4ce HX |
532 | /* The RCU read lock is required by rhashtable due to |
533 | * asynchronous resize/rehash. We also require the mutex | |
534 | * for correctness. | |
31104891 JB |
535 | */ |
536 | rcu_read_lock(); | |
537 | lockdep_assert_held(&sdata->local->sta_mtx); | |
538 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
539 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
540 | rcu_read_unlock(); | |
541 | return -ENOTUNIQ; | |
542 | } | |
543 | rcu_read_unlock(); | |
544 | ||
8c71df7a GE |
545 | return 0; |
546 | } | |
547 | ||
f09603a2 JB |
548 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
549 | struct ieee80211_sub_if_data *sdata, | |
550 | struct sta_info *sta) | |
551 | { | |
552 | enum ieee80211_sta_state state; | |
553 | int err = 0; | |
554 | ||
555 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
556 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
557 | if (err) | |
558 | break; | |
559 | } | |
560 | ||
561 | if (!err) { | |
a4ec45a4 JB |
562 | /* |
563 | * Drivers using legacy sta_add/sta_remove callbacks only | |
564 | * get uploaded set to true after sta_add is called. | |
565 | */ | |
566 | if (!local->ops->sta_add) | |
567 | sta->uploaded = true; | |
f09603a2 JB |
568 | return 0; |
569 | } | |
570 | ||
571 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
572 | sdata_info(sdata, |
573 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
574 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
575 | err = 0; |
576 | } | |
577 | ||
578 | /* unwind on error */ | |
579 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
580 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
581 | ||
582 | return err; | |
583 | } | |
584 | ||
d405fd8c GG |
585 | static void |
586 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
587 | { | |
588 | struct ieee80211_local *local = sdata->local; | |
589 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
590 | struct sta_info *sta; | |
591 | ||
592 | rcu_read_lock(); | |
593 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
594 | if (sdata != sta->sdata || | |
595 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
596 | continue; | |
597 | if (!sta->sta.support_p2p_ps) { | |
598 | allow_p2p_go_ps = false; | |
599 | break; | |
600 | } | |
601 | } | |
602 | rcu_read_unlock(); | |
603 | ||
604 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
605 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
606 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); | |
607 | } | |
608 | } | |
609 | ||
8c71df7a GE |
610 | /* |
611 | * should be called with sta_mtx locked | |
612 | * this function replaces the mutex lock | |
613 | * with a RCU lock | |
614 | */ | |
4d33960b | 615 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
616 | { |
617 | struct ieee80211_local *local = sta->local; | |
618 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 619 | struct station_info *sinfo = NULL; |
8c71df7a GE |
620 | int err = 0; |
621 | ||
622 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 623 | |
7852e361 JB |
624 | /* check if STA exists already */ |
625 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
626 | err = -EEXIST; | |
627 | goto out_err; | |
4d33960b | 628 | } |
32bfd35d | 629 | |
0c2e3842 KV |
630 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
631 | if (!sinfo) { | |
632 | err = -ENOMEM; | |
633 | goto out_err; | |
634 | } | |
635 | ||
7852e361 JB |
636 | local->num_sta++; |
637 | local->sta_generation++; | |
638 | smp_mb(); | |
4d33960b | 639 | |
5108ca82 JB |
640 | /* simplify things and don't accept BA sessions yet */ |
641 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
642 | ||
7852e361 | 643 | /* make the station visible */ |
62b14b24 JB |
644 | err = sta_info_hash_add(local, sta); |
645 | if (err) | |
646 | goto out_drop_sta; | |
83d5cc01 | 647 | |
2bad7748 | 648 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 649 | |
5108ca82 JB |
650 | /* notify driver */ |
651 | err = sta_info_insert_drv_state(local, sdata, sta); | |
652 | if (err) | |
653 | goto out_remove; | |
654 | ||
7852e361 | 655 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c GG |
656 | |
657 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
658 | ieee80211_recalc_min_chandef(sta->sdata); | |
659 | if (!sta->sta.support_p2p_ps) | |
660 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
661 | } | |
662 | ||
5108ca82 JB |
663 | /* accept BA sessions now */ |
664 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 665 | |
7852e361 JB |
666 | ieee80211_sta_debugfs_add(sta); |
667 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 668 | |
0ef049dc AB |
669 | sinfo->generation = local->sta_generation; |
670 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
671 | kfree(sinfo); | |
d0709a65 | 672 | |
bdcbd8e0 | 673 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 674 | |
34e89507 JB |
675 | /* move reference to rcu-protected */ |
676 | rcu_read_lock(); | |
677 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 678 | |
73651ee6 JB |
679 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
680 | mesh_accept_plinks_update(sdata); | |
681 | ||
8c71df7a | 682 | return 0; |
5108ca82 JB |
683 | out_remove: |
684 | sta_info_hash_del(local, sta); | |
685 | list_del_rcu(&sta->list); | |
62b14b24 | 686 | out_drop_sta: |
5108ca82 JB |
687 | local->num_sta--; |
688 | synchronize_net(); | |
689 | __cleanup_single_sta(sta); | |
4d33960b JB |
690 | out_err: |
691 | mutex_unlock(&local->sta_mtx); | |
ea32f065 | 692 | kfree(sinfo); |
4d33960b JB |
693 | rcu_read_lock(); |
694 | return err; | |
8c71df7a GE |
695 | } |
696 | ||
697 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
698 | { | |
699 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 700 | int err; |
8c71df7a | 701 | |
4d33960b JB |
702 | might_sleep(); |
703 | ||
31104891 JB |
704 | mutex_lock(&local->sta_mtx); |
705 | ||
8c71df7a GE |
706 | err = sta_info_insert_check(sta); |
707 | if (err) { | |
31104891 | 708 | mutex_unlock(&local->sta_mtx); |
8c71df7a GE |
709 | rcu_read_lock(); |
710 | goto out_free; | |
711 | } | |
712 | ||
4d33960b | 713 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
714 | if (err) |
715 | goto out_free; | |
716 | ||
73651ee6 | 717 | return 0; |
93e5deb1 | 718 | out_free: |
d9a7ddb0 | 719 | sta_info_free(local, sta); |
93e5deb1 | 720 | return err; |
f0706e82 JB |
721 | } |
722 | ||
34e89507 JB |
723 | int sta_info_insert(struct sta_info *sta) |
724 | { | |
725 | int err = sta_info_insert_rcu(sta); | |
726 | ||
727 | rcu_read_unlock(); | |
728 | ||
729 | return err; | |
730 | } | |
731 | ||
d012a605 | 732 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
733 | { |
734 | /* | |
735 | * This format has been mandated by the IEEE specifications, | |
736 | * so this line may not be changed to use the __set_bit() format. | |
737 | */ | |
d012a605 | 738 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
739 | } |
740 | ||
d012a605 | 741 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
742 | { |
743 | /* | |
744 | * This format has been mandated by the IEEE specifications, | |
745 | * so this line may not be changed to use the __clear_bit() format. | |
746 | */ | |
d012a605 | 747 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
748 | } |
749 | ||
3d5839b6 IP |
750 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
751 | { | |
752 | /* | |
753 | * This format has been mandated by the IEEE specifications, | |
754 | * so this line may not be changed to use the test_bit() format. | |
755 | */ | |
756 | return tim[id / 8] & (1 << (id % 8)); | |
757 | } | |
758 | ||
948d887d | 759 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 760 | { |
948d887d JB |
761 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
762 | switch (ac) { | |
763 | case IEEE80211_AC_VO: | |
764 | return BIT(6) | BIT(7); | |
765 | case IEEE80211_AC_VI: | |
766 | return BIT(4) | BIT(5); | |
767 | case IEEE80211_AC_BE: | |
768 | return BIT(0) | BIT(3); | |
769 | case IEEE80211_AC_BK: | |
770 | return BIT(1) | BIT(2); | |
771 | default: | |
772 | WARN_ON(1); | |
773 | return 0; | |
d0709a65 | 774 | } |
004c872e JB |
775 | } |
776 | ||
9b7a86f3 | 777 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 778 | { |
c868cb35 | 779 | struct ieee80211_local *local = sta->local; |
d012a605 | 780 | struct ps_data *ps; |
948d887d JB |
781 | bool indicate_tim = false; |
782 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
783 | int ac; | |
a69bd8e6 | 784 | u16 id = sta->sta.aid; |
d012a605 MP |
785 | |
786 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
787 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
788 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
789 | return; | |
004c872e | 790 | |
d012a605 | 791 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
792 | #ifdef CONFIG_MAC80211_MESH |
793 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
794 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 795 | #endif |
d012a605 | 796 | } else { |
c868cb35 | 797 | return; |
d012a605 | 798 | } |
3e122be0 | 799 | |
c868cb35 | 800 | /* No need to do anything if the driver does all */ |
d98937f4 | 801 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 802 | return; |
004c872e | 803 | |
c868cb35 JB |
804 | if (sta->dead) |
805 | goto done; | |
3e122be0 | 806 | |
948d887d JB |
807 | /* |
808 | * If all ACs are delivery-enabled then we should build | |
809 | * the TIM bit for all ACs anyway; if only some are then | |
810 | * we ignore those and build the TIM bit using only the | |
811 | * non-enabled ones. | |
812 | */ | |
813 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
814 | ignore_for_tim = 0; | |
815 | ||
9b7a86f3 JB |
816 | if (ignore_pending) |
817 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
818 | ||
948d887d JB |
819 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
820 | unsigned long tids; | |
3e122be0 | 821 | |
f438ceb8 | 822 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
823 | continue; |
824 | ||
825 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
826 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
827 | if (indicate_tim) | |
828 | break; | |
3e122be0 | 829 | |
948d887d JB |
830 | tids = ieee80211_tids_for_ac(ac); |
831 | ||
832 | indicate_tim |= | |
833 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
834 | indicate_tim |= |
835 | sta->txq_buffered_tids & tids; | |
d0709a65 | 836 | } |
004c872e | 837 | |
c868cb35 | 838 | done: |
65f704a5 | 839 | spin_lock_bh(&local->tim_lock); |
004c872e | 840 | |
3d5839b6 IP |
841 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
842 | goto out_unlock; | |
843 | ||
948d887d | 844 | if (indicate_tim) |
d012a605 | 845 | __bss_tim_set(ps->tim, id); |
c868cb35 | 846 | else |
d012a605 | 847 | __bss_tim_clear(ps->tim, id); |
004c872e | 848 | |
9b7a86f3 | 849 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 850 | local->tim_in_locked_section = true; |
948d887d | 851 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
852 | local->tim_in_locked_section = false; |
853 | } | |
3e122be0 | 854 | |
3d5839b6 | 855 | out_unlock: |
65f704a5 | 856 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
857 | } |
858 | ||
9b7a86f3 JB |
859 | void sta_info_recalc_tim(struct sta_info *sta) |
860 | { | |
861 | __sta_info_recalc_tim(sta, false); | |
862 | } | |
863 | ||
cd0b8d89 | 864 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 865 | { |
e039fa4a | 866 | struct ieee80211_tx_info *info; |
f0706e82 JB |
867 | int timeout; |
868 | ||
869 | if (!skb) | |
cd0b8d89 | 870 | return false; |
f0706e82 | 871 | |
e039fa4a | 872 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
873 | |
874 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
875 | timeout = (sta->listen_interval * |
876 | sta->sdata->vif.bss_conf.beacon_int * | |
877 | 32 / 15625) * HZ; | |
f0706e82 JB |
878 | if (timeout < STA_TX_BUFFER_EXPIRE) |
879 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 880 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
881 | } |
882 | ||
883 | ||
948d887d JB |
884 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
885 | struct sta_info *sta, int ac) | |
f0706e82 JB |
886 | { |
887 | unsigned long flags; | |
888 | struct sk_buff *skb; | |
889 | ||
60750397 JB |
890 | /* |
891 | * First check for frames that should expire on the filtered | |
892 | * queue. Frames here were rejected by the driver and are on | |
893 | * a separate queue to avoid reordering with normal PS-buffered | |
894 | * frames. They also aren't accounted for right now in the | |
895 | * total_ps_buffered counter. | |
896 | */ | |
897 | for (;;) { | |
948d887d JB |
898 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
899 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 900 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 901 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
902 | else |
903 | skb = NULL; | |
948d887d | 904 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
905 | |
906 | /* | |
907 | * Frames are queued in order, so if this one | |
908 | * hasn't expired yet we can stop testing. If | |
909 | * we actually reached the end of the queue we | |
910 | * also need to stop, of course. | |
911 | */ | |
912 | if (!skb) | |
913 | break; | |
d4fa14cd | 914 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
915 | } |
916 | ||
917 | /* | |
918 | * Now also check the normal PS-buffered queue, this will | |
919 | * only find something if the filtered queue was emptied | |
920 | * since the filtered frames are all before the normal PS | |
921 | * buffered frames. | |
922 | */ | |
f0706e82 | 923 | for (;;) { |
948d887d JB |
924 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
925 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 926 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 927 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 928 | else |
f0706e82 | 929 | skb = NULL; |
948d887d | 930 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 931 | |
60750397 JB |
932 | /* |
933 | * frames are queued in order, so if this one | |
934 | * hasn't expired yet (or we reached the end of | |
935 | * the queue) we can stop testing | |
936 | */ | |
836341a7 | 937 | if (!skb) |
f0706e82 | 938 | break; |
836341a7 | 939 | |
836341a7 | 940 | local->total_ps_buffered--; |
bdcbd8e0 JB |
941 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
942 | sta->sta.addr); | |
d4fa14cd | 943 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 944 | } |
3393a608 | 945 | |
60750397 JB |
946 | /* |
947 | * Finally, recalculate the TIM bit for this station -- it might | |
948 | * now be clear because the station was too slow to retrieve its | |
949 | * frames. | |
950 | */ | |
951 | sta_info_recalc_tim(sta); | |
952 | ||
953 | /* | |
954 | * Return whether there are any frames still buffered, this is | |
955 | * used to check whether the cleanup timer still needs to run, | |
956 | * if there are no frames we don't need to rearm the timer. | |
957 | */ | |
948d887d JB |
958 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
959 | skb_queue_empty(&sta->tx_filtered[ac])); | |
960 | } | |
961 | ||
962 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
963 | struct sta_info *sta) | |
964 | { | |
965 | bool have_buffered = false; | |
966 | int ac; | |
967 | ||
3f52b7e3 MP |
968 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
969 | if (!sta->sdata->bss && | |
970 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
971 | return false; |
972 | ||
973 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
974 | have_buffered |= | |
975 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
976 | ||
977 | return have_buffered; | |
f0706e82 JB |
978 | } |
979 | ||
d778207b | 980 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 981 | { |
34e89507 JB |
982 | struct ieee80211_local *local; |
983 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 984 | int ret; |
f0706e82 | 985 | |
34e89507 | 986 | might_sleep(); |
f0706e82 | 987 | |
34e89507 JB |
988 | if (!sta) |
989 | return -ENOENT; | |
5bb644a0 | 990 | |
34e89507 JB |
991 | local = sta->local; |
992 | sdata = sta->sdata; | |
f0706e82 | 993 | |
83d5cc01 JB |
994 | lockdep_assert_held(&local->sta_mtx); |
995 | ||
098a6070 JB |
996 | /* |
997 | * Before removing the station from the driver and | |
998 | * rate control, it might still start new aggregation | |
999 | * sessions -- block that to make sure the tear-down | |
1000 | * will be sufficient. | |
1001 | */ | |
c2c98fde | 1002 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 1003 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 1004 | |
f59374eb SS |
1005 | /* |
1006 | * Before removing the station from the driver there might be pending | |
1007 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
1008 | * all such frames to be processed. | |
1009 | */ | |
1010 | drv_sync_rx_queues(local, sta); | |
1011 | ||
34e89507 | 1012 | ret = sta_info_hash_del(local, sta); |
b01711be | 1013 | if (WARN_ON(ret)) |
34e89507 JB |
1014 | return ret; |
1015 | ||
a7a6bdd0 AN |
1016 | /* |
1017 | * for TDLS peers, make sure to return to the base channel before | |
1018 | * removal. | |
1019 | */ | |
1020 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1021 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1022 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1023 | } | |
1024 | ||
794454ce | 1025 | list_del_rcu(&sta->list); |
ef044763 | 1026 | sta->removed = true; |
4d33960b | 1027 | |
6a9d1b91 JB |
1028 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
1029 | ||
a710c816 JB |
1030 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1031 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1032 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1033 | ||
d778207b JB |
1034 | return 0; |
1035 | } | |
1036 | ||
1037 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1038 | { | |
1039 | struct ieee80211_local *local = sta->local; | |
1040 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1041 | struct station_info *sinfo; |
d778207b JB |
1042 | int ret; |
1043 | ||
1044 | /* | |
1045 | * NOTE: This assumes at least synchronize_net() was done | |
1046 | * after _part1 and before _part2! | |
1047 | */ | |
1048 | ||
1049 | might_sleep(); | |
1050 | lockdep_assert_held(&local->sta_mtx); | |
1051 | ||
b16798f5 JB |
1052 | while (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
1053 | ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); | |
1054 | WARN_ON_ONCE(ret); | |
1055 | } | |
1056 | ||
c8782078 | 1057 | /* now keys can no longer be reached */ |
6d10e46b | 1058 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1059 | |
9b7a86f3 JB |
1060 | /* disable TIM bit - last chance to tell driver */ |
1061 | __sta_info_recalc_tim(sta, true); | |
1062 | ||
34e89507 JB |
1063 | sta->dead = true; |
1064 | ||
34e89507 JB |
1065 | local->num_sta--; |
1066 | local->sta_generation++; | |
1067 | ||
83d5cc01 | 1068 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1069 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1070 | if (ret) { | |
83d5cc01 JB |
1071 | WARN_ON_ONCE(1); |
1072 | break; | |
1073 | } | |
1074 | } | |
d9a7ddb0 | 1075 | |
f09603a2 | 1076 | if (sta->uploaded) { |
f09603a2 JB |
1077 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1078 | IEEE80211_STA_NOTEXIST); | |
1079 | WARN_ON_ONCE(ret != 0); | |
1080 | } | |
34e89507 | 1081 | |
bdcbd8e0 JB |
1082 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1083 | ||
0ef049dc AB |
1084 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1085 | if (sinfo) | |
0fdf1493 | 1086 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1087 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1088 | kfree(sinfo); | |
ec15e68b | 1089 | |
34e89507 JB |
1090 | ieee80211_sta_debugfs_remove(sta); |
1091 | ||
d34ba216 | 1092 | cleanup_single_sta(sta); |
d778207b JB |
1093 | } |
1094 | ||
1095 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1096 | { | |
1097 | int err = __sta_info_destroy_part1(sta); | |
1098 | ||
1099 | if (err) | |
1100 | return err; | |
1101 | ||
1102 | synchronize_net(); | |
1103 | ||
1104 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1105 | |
1106 | return 0; | |
4d6141c3 JS |
1107 | } |
1108 | ||
34e89507 | 1109 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1110 | { |
34e89507 JB |
1111 | struct sta_info *sta; |
1112 | int ret; | |
4d6141c3 | 1113 | |
34e89507 | 1114 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1115 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1116 | ret = __sta_info_destroy(sta); |
1117 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1118 | |
1119 | return ret; | |
1120 | } | |
1121 | ||
34e89507 JB |
1122 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1123 | const u8 *addr) | |
e9f207f0 | 1124 | { |
34e89507 JB |
1125 | struct sta_info *sta; |
1126 | int ret; | |
e9f207f0 | 1127 | |
34e89507 | 1128 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1129 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1130 | ret = __sta_info_destroy(sta); |
1131 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1132 | |
34e89507 JB |
1133 | return ret; |
1134 | } | |
e9f207f0 | 1135 | |
34f11cd3 | 1136 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1137 | { |
34f11cd3 | 1138 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1139 | struct sta_info *sta; |
3393a608 | 1140 | bool timer_needed = false; |
34e89507 JB |
1141 | |
1142 | rcu_read_lock(); | |
1143 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1144 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1145 | timer_needed = true; | |
34e89507 | 1146 | rcu_read_unlock(); |
e9f207f0 | 1147 | |
34e89507 JB |
1148 | if (local->quiescing) |
1149 | return; | |
d0709a65 | 1150 | |
3393a608 JO |
1151 | if (!timer_needed) |
1152 | return; | |
1153 | ||
26d59535 JB |
1154 | mod_timer(&local->sta_cleanup, |
1155 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1156 | } |
e9f207f0 | 1157 | |
7bedd0cf JB |
1158 | int sta_info_init(struct ieee80211_local *local) |
1159 | { | |
1160 | int err; | |
1161 | ||
83e7e4ce | 1162 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1163 | if (err) |
1164 | return err; | |
1165 | ||
4d33960b | 1166 | spin_lock_init(&local->tim_lock); |
34e89507 | 1167 | mutex_init(&local->sta_mtx); |
f0706e82 | 1168 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1169 | |
34f11cd3 | 1170 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1171 | return 0; |
f0706e82 JB |
1172 | } |
1173 | ||
1174 | void sta_info_stop(struct ieee80211_local *local) | |
1175 | { | |
a56f992c | 1176 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1177 | rhltable_destroy(&local->sta_hash); |
f0706e82 JB |
1178 | } |
1179 | ||
051007d9 | 1180 | |
e716251d | 1181 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1182 | { |
b998e8bb | 1183 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1184 | struct sta_info *sta, *tmp; |
d778207b | 1185 | LIST_HEAD(free_list); |
44213b5e | 1186 | int ret = 0; |
f0706e82 | 1187 | |
d0709a65 | 1188 | might_sleep(); |
be8755e1 | 1189 | |
e716251d JB |
1190 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1191 | WARN_ON(vlans && !sdata->bss); | |
1192 | ||
34e89507 | 1193 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1194 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1195 | if (sdata == sta->sdata || |
1196 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1197 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1198 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1199 | ret++; |
1200 | } | |
be8755e1 | 1201 | } |
d778207b JB |
1202 | |
1203 | if (!list_empty(&free_list)) { | |
1204 | synchronize_net(); | |
1205 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1206 | __sta_info_destroy_part2(sta); | |
1207 | } | |
34e89507 | 1208 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1209 | |
051007d9 JB |
1210 | return ret; |
1211 | } | |
1212 | ||
24723d1b JB |
1213 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1214 | unsigned long exp_time) | |
1215 | { | |
1216 | struct ieee80211_local *local = sdata->local; | |
1217 | struct sta_info *sta, *tmp; | |
24723d1b | 1218 | |
34e89507 | 1219 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1220 | |
1221 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1222 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1223 | ||
ec2b774e ML |
1224 | if (sdata != sta->sdata) |
1225 | continue; | |
1226 | ||
b8da6b6a | 1227 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1228 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1229 | sta->sta.addr); | |
3f52b7e3 MP |
1230 | |
1231 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1232 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1233 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1234 | ||
34e89507 | 1235 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1236 | } |
e46a2cf9 MSS |
1237 | } |
1238 | ||
34e89507 | 1239 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1240 | } |
17741cdc | 1241 | |
686b9cb9 | 1242 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1243 | const u8 *addr, |
1244 | const u8 *localaddr) | |
17741cdc | 1245 | { |
7bedd0cf | 1246 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1247 | struct rhlist_head *tmp; |
7bedd0cf | 1248 | struct sta_info *sta; |
17741cdc | 1249 | |
686b9cb9 BG |
1250 | /* |
1251 | * Just return a random station if localaddr is NULL | |
1252 | * ... first in list. | |
1253 | */ | |
83e7e4ce | 1254 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1255 | if (localaddr && |
b203ca39 | 1256 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1257 | continue; |
f7c65594 JB |
1258 | if (!sta->uploaded) |
1259 | return NULL; | |
abe60632 | 1260 | return &sta->sta; |
f7c65594 JB |
1261 | } |
1262 | ||
abe60632 | 1263 | return NULL; |
17741cdc | 1264 | } |
686b9cb9 | 1265 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1266 | |
1267 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1268 | const u8 *addr) | |
1269 | { | |
f7c65594 | 1270 | struct sta_info *sta; |
5ed176e1 JB |
1271 | |
1272 | if (!vif) | |
1273 | return NULL; | |
1274 | ||
f7c65594 JB |
1275 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1276 | if (!sta) | |
1277 | return NULL; | |
1278 | ||
1279 | if (!sta->uploaded) | |
1280 | return NULL; | |
5ed176e1 | 1281 | |
f7c65594 | 1282 | return &sta->sta; |
5ed176e1 | 1283 | } |
17741cdc | 1284 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1285 | |
e3685e03 JB |
1286 | /* powersave support code */ |
1287 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1288 | { |
608383bf | 1289 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1290 | struct ieee80211_local *local = sdata->local; |
1291 | struct sk_buff_head pending; | |
ba8c3d6f | 1292 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1293 | unsigned long flags; |
d012a605 MP |
1294 | struct ps_data *ps; |
1295 | ||
3918edb0 FF |
1296 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1297 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1298 | u.ap); | |
1299 | ||
1300 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1301 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1302 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1303 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1304 | else |
1305 | return; | |
50a9432d | 1306 | |
c2c98fde | 1307 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1308 | |
5a306f58 | 1309 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1310 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1311 | sta->txq_buffered_tids = 0; |
af818581 | 1312 | |
30686bf7 | 1313 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1314 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1315 | |
adf8ed01 JB |
1316 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1317 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1318 | continue; | |
ba8c3d6f | 1319 | |
18667600 | 1320 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1321 | } |
1322 | ||
948d887d | 1323 | skb_queue_head_init(&pending); |
af818581 | 1324 | |
1d147bfa EG |
1325 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1326 | spin_lock(&sta->ps_lock); | |
af818581 | 1327 | /* Send all buffered frames to the station */ |
948d887d JB |
1328 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1329 | int count = skb_queue_len(&pending), tmp; | |
1330 | ||
987c285c | 1331 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1332 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1333 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1334 | tmp = skb_queue_len(&pending); |
1335 | filtered += tmp - count; | |
1336 | count = tmp; | |
1337 | ||
987c285c | 1338 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1339 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1340 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1341 | tmp = skb_queue_len(&pending); |
1342 | buffered += tmp - count; | |
1343 | } | |
1344 | ||
e3685e03 | 1345 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1346 | |
1347 | /* now we're no longer in the deliver code */ | |
1348 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1349 | ||
1350 | /* The station might have polled and then woken up before we responded, | |
1351 | * so clear these flags now to avoid them sticking around. | |
1352 | */ | |
1353 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1354 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1355 | spin_unlock(&sta->ps_lock); |
948d887d | 1356 | |
e3685e03 JB |
1357 | atomic_dec(&ps->num_sta_ps); |
1358 | ||
687da132 | 1359 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1360 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1361 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1362 | sdata->smps_mode) && |
1363 | sta->known_smps_mode != sdata->bss->req_smps && | |
1364 | sta_info_tx_streams(sta) != 1) { | |
1365 | ht_dbg(sdata, | |
1366 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1367 | sta->sta.addr); | |
1368 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1369 | sta->sta.addr, | |
1370 | sdata->vif.bss_conf.bssid); | |
1371 | } | |
1372 | ||
af818581 JB |
1373 | local->total_ps_buffered -= buffered; |
1374 | ||
c868cb35 JB |
1375 | sta_info_recalc_tim(sta); |
1376 | ||
bdcbd8e0 | 1377 | ps_dbg(sdata, |
2595d259 | 1378 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1379 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1380 | |
1381 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1382 | } |
1383 | ||
0ead2510 | 1384 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1385 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1386 | bool call_driver, bool more_data) |
af818581 | 1387 | { |
0ead2510 | 1388 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1389 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1390 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1391 | struct sk_buff *skb; |
ce662b44 JB |
1392 | int size = sizeof(*nullfunc); |
1393 | __le16 fc; | |
a74a8c84 | 1394 | bool qos = sta->sta.wme; |
ce662b44 | 1395 | struct ieee80211_tx_info *info; |
55de908a | 1396 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1397 | |
41cbb0f5 LC |
1398 | /* Don't send NDPs when STA is connected HE */ |
1399 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1400 | !(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE)) | |
1401 | return; | |
1402 | ||
ce662b44 JB |
1403 | if (qos) { |
1404 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1405 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1406 | IEEE80211_FCTL_FROMDS); | |
1407 | } else { | |
1408 | size -= 2; | |
1409 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1410 | IEEE80211_STYPE_NULLFUNC | | |
1411 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1412 | } |
af818581 | 1413 | |
ce662b44 JB |
1414 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1415 | if (!skb) | |
1416 | return; | |
1417 | ||
1418 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1419 | ||
4df864c1 | 1420 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1421 | nullfunc->frame_control = fc; |
1422 | nullfunc->duration_id = 0; | |
1423 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1424 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1425 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1426 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1427 | |
59b66255 JB |
1428 | skb->priority = tid; |
1429 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1430 | if (qos) { |
ce662b44 JB |
1431 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1432 | ||
0ead2510 | 1433 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1434 | nullfunc->qos_ctrl |= |
1435 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1436 | if (more_data) |
1437 | nullfunc->frame_control |= | |
1438 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1439 | } | |
ce662b44 JB |
1440 | } |
1441 | ||
1442 | info = IEEE80211_SKB_CB(skb); | |
1443 | ||
1444 | /* | |
1445 | * Tell TX path to send this frame even though the | |
1446 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1447 | * exchange. Also set EOSP to indicate this packet |
1448 | * ends the poll/service period. | |
ce662b44 | 1449 | */ |
02f2f1a9 | 1450 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1451 | IEEE80211_TX_STATUS_EOSP | |
1452 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1453 | |
6b127c71 SM |
1454 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1455 | ||
b77cf4f8 JB |
1456 | if (call_driver) |
1457 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1458 | reason, false); | |
40b96408 | 1459 | |
89afe614 JB |
1460 | skb->dev = sdata->dev; |
1461 | ||
55de908a JB |
1462 | rcu_read_lock(); |
1463 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1464 | if (WARN_ON(!chanctx_conf)) { | |
1465 | rcu_read_unlock(); | |
1466 | kfree_skb(skb); | |
1467 | return; | |
1468 | } | |
1469 | ||
73c4e195 | 1470 | info->band = chanctx_conf->def.chan->band; |
b9771d41 | 1471 | ieee80211_xmit(sdata, sta, skb, 0); |
55de908a | 1472 | rcu_read_unlock(); |
ce662b44 JB |
1473 | } |
1474 | ||
0a1cb809 JB |
1475 | static int find_highest_prio_tid(unsigned long tids) |
1476 | { | |
1477 | /* lower 3 TIDs aren't ordered perfectly */ | |
1478 | if (tids & 0xF8) | |
1479 | return fls(tids) - 1; | |
1480 | /* TID 0 is BE just like TID 3 */ | |
1481 | if (tids & BIT(0)) | |
1482 | return 0; | |
1483 | return fls(tids) - 1; | |
1484 | } | |
1485 | ||
0ead2510 EG |
1486 | /* Indicates if the MORE_DATA bit should be set in the last |
1487 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1488 | * Note that driver_release_tids is relevant only if | |
1489 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1490 | */ | |
1491 | static bool | |
1492 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1493 | enum ieee80211_frame_release_type reason, | |
1494 | unsigned long driver_release_tids) | |
1495 | { | |
1496 | int ac; | |
1497 | ||
1498 | /* If the driver has data on more than one TID then | |
1499 | * certainly there's more data if we release just a | |
1500 | * single frame now (from a single TID). This will | |
1501 | * only happen for PS-Poll. | |
1502 | */ | |
1503 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1504 | hweight16(driver_release_tids) > 1) | |
1505 | return true; | |
1506 | ||
1507 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1508 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1509 | continue; |
1510 | ||
1511 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1512 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1513 | return true; | |
1514 | } | |
1515 | ||
1516 | return false; | |
1517 | } | |
1518 | ||
47086fc5 | 1519 | static void |
0ead2510 EG |
1520 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1521 | enum ieee80211_frame_release_type reason, | |
1522 | struct sk_buff_head *frames, | |
1523 | unsigned long *driver_release_tids) | |
af818581 JB |
1524 | { |
1525 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1526 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1527 | int ac; |
948d887d | 1528 | |
f9f760b4 | 1529 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1530 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1531 | unsigned long tids; |
1532 | ||
f438ceb8 | 1533 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1534 | continue; |
1535 | ||
4049e09a JB |
1536 | tids = ieee80211_tids_for_ac(ac); |
1537 | ||
f9f760b4 JB |
1538 | /* if we already have frames from software, then we can't also |
1539 | * release from hardware queues | |
1540 | */ | |
0ead2510 EG |
1541 | if (skb_queue_empty(frames)) { |
1542 | *driver_release_tids |= | |
1543 | sta->driver_buffered_tids & tids; | |
1544 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1545 | } |
948d887d | 1546 | |
0ead2510 | 1547 | if (!*driver_release_tids) { |
f9f760b4 JB |
1548 | struct sk_buff *skb; |
1549 | ||
1550 | while (n_frames > 0) { | |
1551 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1552 | if (!skb) { | |
1553 | skb = skb_dequeue( | |
1554 | &sta->ps_tx_buf[ac]); | |
1555 | if (skb) | |
1556 | local->total_ps_buffered--; | |
1557 | } | |
1558 | if (!skb) | |
1559 | break; | |
1560 | n_frames--; | |
0ead2510 | 1561 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1562 | } |
4049e09a | 1563 | } |
948d887d | 1564 | |
0ead2510 EG |
1565 | /* If we have more frames buffered on this AC, then abort the |
1566 | * loop since we can't send more data from other ACs before | |
1567 | * the buffered frames from this. | |
f9f760b4 | 1568 | */ |
948d887d | 1569 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1570 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1571 | break; |
af818581 | 1572 | } |
0ead2510 EG |
1573 | } |
1574 | ||
1575 | static void | |
1576 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1577 | int n_frames, u8 ignored_acs, | |
1578 | enum ieee80211_frame_release_type reason) | |
1579 | { | |
1580 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1581 | struct ieee80211_local *local = sdata->local; | |
1582 | unsigned long driver_release_tids = 0; | |
1583 | struct sk_buff_head frames; | |
1584 | bool more_data; | |
1585 | ||
1586 | /* Service or PS-Poll period starts */ | |
1587 | set_sta_flag(sta, WLAN_STA_SP); | |
1588 | ||
1589 | __skb_queue_head_init(&frames); | |
1590 | ||
1591 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1592 | &frames, &driver_release_tids); | |
1593 | ||
1594 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1595 | ||
1a57081a | 1596 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1597 | driver_release_tids = |
1598 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1599 | |
f9f760b4 | 1600 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1601 | int tid, ac; |
af818581 JB |
1602 | |
1603 | /* | |
ce662b44 JB |
1604 | * For PS-Poll, this can only happen due to a race condition |
1605 | * when we set the TIM bit and the station notices it, but | |
1606 | * before it can poll for the frame we expire it. | |
1607 | * | |
1608 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1609 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1610 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1611 | * more than the value specified in the Max SP Length field | |
1612 | * in the QoS Capability element from delivery-enabled ACs, | |
1613 | * that are destined for the non-AP STA. | |
1614 | * | |
1615 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1616 | */ |
af818581 | 1617 | |
ce662b44 | 1618 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1619 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1620 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1621 | break; | |
f438ceb8 | 1622 | tid = 7 - 2 * ac; |
af818581 | 1623 | |
0ead2510 | 1624 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1625 | } else if (!driver_release_tids) { |
47086fc5 JB |
1626 | struct sk_buff_head pending; |
1627 | struct sk_buff *skb; | |
40b96408 JB |
1628 | int num = 0; |
1629 | u16 tids = 0; | |
b77cf4f8 | 1630 | bool need_null = false; |
af818581 | 1631 | |
47086fc5 | 1632 | skb_queue_head_init(&pending); |
af818581 | 1633 | |
47086fc5 JB |
1634 | while ((skb = __skb_dequeue(&frames))) { |
1635 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1636 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1637 | u8 *qoshdr = NULL; |
1638 | ||
1639 | num++; | |
af818581 | 1640 | |
47086fc5 JB |
1641 | /* |
1642 | * Tell TX path to send this frame even though the | |
1643 | * STA may still remain is PS mode after this frame | |
1644 | * exchange. | |
1645 | */ | |
6b127c71 SM |
1646 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1647 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1648 | |
1649 | /* | |
1650 | * Use MoreData flag to indicate whether there are | |
1651 | * more buffered frames for this STA | |
1652 | */ | |
24b9c373 | 1653 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1654 | hdr->frame_control |= |
1655 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1656 | else |
1657 | hdr->frame_control &= | |
1658 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1659 | |
40b96408 JB |
1660 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1661 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1662 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1663 | ||
b77cf4f8 | 1664 | tids |= BIT(skb->priority); |
52a3f20c | 1665 | |
b77cf4f8 JB |
1666 | __skb_queue_tail(&pending, skb); |
1667 | ||
1668 | /* end service period after last frame or add one */ | |
1669 | if (!skb_queue_empty(&frames)) | |
1670 | continue; | |
1671 | ||
1672 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1673 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1674 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1675 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1676 | break; |
52a3f20c | 1677 | } |
deeaee19 | 1678 | |
b77cf4f8 JB |
1679 | /* For uAPSD, things are a bit more complicated. If the |
1680 | * last frame has a QoS header (i.e. is a QoS-data or | |
1681 | * QoS-nulldata frame) then just set the EOSP bit there | |
1682 | * and be done. | |
1683 | * If the frame doesn't have a QoS header (which means | |
1684 | * it should be a bufferable MMPDU) then we can't set | |
1685 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1686 | * frame to the list to send it after the MMPDU. | |
1687 | * | |
1688 | * Note that this code is only in the mac80211-release | |
1689 | * code path, we assume that the driver will not buffer | |
1690 | * anything but QoS-data frames, or if it does, will | |
1691 | * create the QoS-nulldata frame by itself if needed. | |
1692 | * | |
1693 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1694 | */ | |
1695 | if (qoshdr) { | |
1696 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1697 | |
b77cf4f8 JB |
1698 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1699 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1700 | } else { | |
1701 | /* The standard isn't completely clear on this | |
1702 | * as it says the more-data bit should be set | |
1703 | * if there are more BUs. The QoS-Null frame | |
1704 | * we're about to send isn't buffered yet, we | |
1705 | * only create it below, but let's pretend it | |
1706 | * was buffered just in case some clients only | |
1707 | * expect more-data=0 when eosp=1. | |
1708 | */ | |
1709 | hdr->frame_control |= | |
1710 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1711 | need_null = true; | |
1712 | num++; | |
1713 | } | |
1714 | break; | |
47086fc5 | 1715 | } |
af818581 | 1716 | |
40b96408 JB |
1717 | drv_allow_buffered_frames(local, sta, tids, num, |
1718 | reason, more_data); | |
1719 | ||
47086fc5 | 1720 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1721 | |
b77cf4f8 JB |
1722 | if (need_null) |
1723 | ieee80211_send_null_response( | |
0ead2510 EG |
1724 | sta, find_highest_prio_tid(tids), |
1725 | reason, false, false); | |
b77cf4f8 | 1726 | |
c868cb35 | 1727 | sta_info_recalc_tim(sta); |
af818581 | 1728 | } else { |
ba8c3d6f FF |
1729 | int tid; |
1730 | ||
af818581 | 1731 | /* |
4049e09a JB |
1732 | * We need to release a frame that is buffered somewhere in the |
1733 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1734 | * Note that the driver also has to check the number of frames |
1735 | * on the TIDs we're releasing from - if there are more than | |
1736 | * n_frames it has to set the more-data bit (if we didn't ask | |
1737 | * it to set it anyway due to other buffered frames); if there | |
1738 | * are fewer than n_frames it has to make sure to adjust that | |
1739 | * to allow the service period to end properly. | |
4049e09a JB |
1740 | */ |
1741 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1742 | n_frames, reason, more_data); |
4049e09a JB |
1743 | |
1744 | /* | |
1745 | * Note that we don't recalculate the TIM bit here as it would | |
1746 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1747 | * that the TID(s) became empty before returning here from the |
4049e09a | 1748 | * release function. |
f9f760b4 | 1749 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1750 | * became empty or we find that a txq became empty, we'll do the |
1751 | * TIM recalculation. | |
af818581 | 1752 | */ |
ba8c3d6f FF |
1753 | |
1754 | if (!sta->sta.txq[0]) | |
1755 | return; | |
1756 | ||
1757 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
adf8ed01 JB |
1758 | if (!sta->sta.txq[tid] || |
1759 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1760 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1761 | continue; |
1762 | ||
1763 | sta_info_recalc_tim(sta); | |
1764 | break; | |
1765 | } | |
af818581 JB |
1766 | } |
1767 | } | |
1768 | ||
47086fc5 JB |
1769 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1770 | { | |
1771 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1772 | ||
1773 | /* | |
1774 | * If all ACs are delivery-enabled then we should reply | |
1775 | * from any of them, if only some are enabled we reply | |
1776 | * only from the non-enabled ones. | |
1777 | */ | |
1778 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1779 | ignore_for_response = 0; | |
1780 | ||
1781 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1782 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1783 | } | |
1784 | ||
1785 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1786 | { | |
1787 | int n_frames = sta->sta.max_sp; | |
1788 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1789 | ||
1790 | /* | |
1791 | * If we ever grow support for TSPEC this might happen if | |
1792 | * the TSPEC update from hostapd comes in between a trigger | |
1793 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1794 | * actually getting called. | |
1795 | */ | |
1796 | if (!delivery_enabled) | |
1797 | return; | |
1798 | ||
47086fc5 JB |
1799 | switch (sta->sta.max_sp) { |
1800 | case 1: | |
1801 | n_frames = 2; | |
1802 | break; | |
1803 | case 2: | |
1804 | n_frames = 4; | |
1805 | break; | |
1806 | case 3: | |
1807 | n_frames = 6; | |
1808 | break; | |
1809 | case 0: | |
1810 | /* XXX: what is a good value? */ | |
13a8098a | 1811 | n_frames = 128; |
47086fc5 JB |
1812 | break; |
1813 | } | |
1814 | ||
1815 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1816 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1817 | } | |
1818 | ||
af818581 JB |
1819 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1820 | struct ieee80211_sta *pubsta, bool block) | |
1821 | { | |
1822 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1823 | ||
b5878a2d JB |
1824 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1825 | ||
5ac2e350 | 1826 | if (block) { |
c2c98fde | 1827 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1828 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1829 | return; |
1830 | } | |
1831 | ||
1832 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1833 | return; | |
1834 | ||
1835 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1836 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1837 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1838 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1839 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1840 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1841 | /* must be asleep in this case */ | |
1842 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1843 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1844 | } else { | |
1845 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1846 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1847 | } |
af818581 JB |
1848 | } |
1849 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1850 | |
e943789e | 1851 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1852 | { |
1853 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1854 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1855 | |
1856 | trace_api_eosp(local, pubsta); | |
1857 | ||
e943789e | 1858 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1859 | } |
e943789e | 1860 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1861 | |
0ead2510 EG |
1862 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1863 | { | |
1864 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1865 | enum ieee80211_frame_release_type reason; | |
1866 | bool more_data; | |
1867 | ||
1868 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1869 | ||
1870 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1871 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1872 | reason, 0); | |
1873 | ||
1874 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1875 | } | |
1876 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1877 | ||
042ec453 JB |
1878 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1879 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1880 | { |
1881 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1882 | ||
5a306f58 | 1883 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1884 | return; |
1885 | ||
1b000789 JB |
1886 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1887 | ||
948d887d JB |
1888 | if (buffered) |
1889 | set_bit(tid, &sta->driver_buffered_tids); | |
1890 | else | |
1891 | clear_bit(tid, &sta->driver_buffered_tids); | |
1892 | ||
c868cb35 | 1893 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1894 | } |
042ec453 | 1895 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1896 | |
b4809e94 THJ |
1897 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
1898 | u32 tx_airtime, u32 rx_airtime) | |
1899 | { | |
1900 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1901 | struct ieee80211_local *local = sta->sdata->local; | |
1902 | u8 ac = ieee80211_ac_from_tid(tid); | |
1903 | u32 airtime = 0; | |
1904 | ||
1905 | if (sta->local->airtime_flags & AIRTIME_USE_TX) | |
1906 | airtime += tx_airtime; | |
1907 | if (sta->local->airtime_flags & AIRTIME_USE_RX) | |
1908 | airtime += rx_airtime; | |
1909 | ||
1910 | spin_lock_bh(&local->active_txq_lock[ac]); | |
1911 | sta->airtime[ac].tx_airtime += tx_airtime; | |
1912 | sta->airtime[ac].rx_airtime += rx_airtime; | |
1913 | sta->airtime[ac].deficit -= airtime; | |
1914 | spin_unlock_bh(&local->active_txq_lock[ac]); | |
1915 | } | |
1916 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
1917 | ||
3ace10f5 KY |
1918 | void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
1919 | struct sta_info *sta, u8 ac, | |
1920 | u16 tx_airtime, bool tx_completed) | |
1921 | { | |
1922 | int tx_pending; | |
1923 | ||
911bde0f THJ |
1924 | if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) |
1925 | return; | |
1926 | ||
3ace10f5 KY |
1927 | if (!tx_completed) { |
1928 | if (sta) | |
1929 | atomic_add(tx_airtime, | |
1930 | &sta->airtime[ac].aql_tx_pending); | |
1931 | ||
1932 | atomic_add(tx_airtime, &local->aql_total_pending_airtime); | |
1933 | return; | |
1934 | } | |
1935 | ||
1936 | if (sta) { | |
1937 | tx_pending = atomic_sub_return(tx_airtime, | |
1938 | &sta->airtime[ac].aql_tx_pending); | |
1939 | if (WARN_ONCE(tx_pending < 0, | |
1940 | "STA %pM AC %d txq pending airtime underflow: %u, %u", | |
1941 | sta->addr, ac, tx_pending, tx_airtime)) | |
1942 | atomic_cmpxchg(&sta->airtime[ac].aql_tx_pending, | |
1943 | tx_pending, 0); | |
1944 | } | |
1945 | ||
1946 | tx_pending = atomic_sub_return(tx_airtime, | |
1947 | &local->aql_total_pending_airtime); | |
1948 | if (WARN_ONCE(tx_pending < 0, | |
1949 | "Device %s AC %d pending airtime underflow: %u, %u", | |
1950 | wiphy_name(local->hw.wiphy), ac, tx_pending, | |
1951 | tx_airtime)) | |
1952 | atomic_cmpxchg(&local->aql_total_pending_airtime, | |
1953 | tx_pending, 0); | |
1954 | } | |
1955 | ||
83d5cc01 JB |
1956 | int sta_info_move_state(struct sta_info *sta, |
1957 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1958 | { |
8bf11d8d | 1959 | might_sleep(); |
d9a7ddb0 JB |
1960 | |
1961 | if (sta->sta_state == new_state) | |
1962 | return 0; | |
1963 | ||
f09603a2 JB |
1964 | /* check allowed transitions first */ |
1965 | ||
1966 | switch (new_state) { | |
1967 | case IEEE80211_STA_NONE: | |
1968 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1969 | return -EINVAL; | |
1970 | break; | |
1971 | case IEEE80211_STA_AUTH: | |
1972 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1973 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1974 | return -EINVAL; | |
1975 | break; | |
1976 | case IEEE80211_STA_ASSOC: | |
1977 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1978 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1979 | return -EINVAL; | |
1980 | break; | |
1981 | case IEEE80211_STA_AUTHORIZED: | |
1982 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1983 | return -EINVAL; | |
1984 | break; | |
1985 | default: | |
1986 | WARN(1, "invalid state %d", new_state); | |
1987 | return -EINVAL; | |
1988 | } | |
1989 | ||
bdcbd8e0 JB |
1990 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1991 | sta->sta.addr, new_state); | |
f09603a2 JB |
1992 | |
1993 | /* | |
1994 | * notify the driver before the actual changes so it can | |
1995 | * fail the transition | |
1996 | */ | |
1997 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1998 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1999 | sta->sta_state, new_state); | |
2000 | if (err) | |
2001 | return err; | |
2002 | } | |
2003 | ||
2004 | /* reflect the change in all state variables */ | |
2005 | ||
d9a7ddb0 JB |
2006 | switch (new_state) { |
2007 | case IEEE80211_STA_NONE: | |
2008 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
2009 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
2010 | break; |
2011 | case IEEE80211_STA_AUTH: | |
a7201a6c | 2012 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 2013 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 2014 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 2015 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 2016 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
2017 | if (!sta->sta.support_p2p_ps) |
2018 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 2019 | } |
d9a7ddb0 JB |
2020 | break; |
2021 | case IEEE80211_STA_ASSOC: | |
29623892 | 2022 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 2023 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
9cf02338 | 2024 | sta->assoc_at = ktime_get_boottime_ns(); |
a7201a6c | 2025 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
2026 | if (!sta->sta.support_p2p_ps) |
2027 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 2028 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 2029 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 2030 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2031 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 2032 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 2033 | } |
d9a7ddb0 JB |
2034 | break; |
2035 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 2036 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 2037 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 2038 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 2039 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 2040 | ieee80211_check_fast_rx(sta); |
f09603a2 | 2041 | } |
3e493173 JM |
2042 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
2043 | sta->sdata->vif.type == NL80211_IFTYPE_AP) | |
2044 | cfg80211_send_layer2_update(sta->sdata->dev, | |
2045 | sta->sta.addr); | |
d9a7ddb0 JB |
2046 | break; |
2047 | default: | |
f09603a2 | 2048 | break; |
d9a7ddb0 JB |
2049 | } |
2050 | ||
d9a7ddb0 JB |
2051 | sta->sta_state = new_state; |
2052 | ||
2053 | return 0; | |
2054 | } | |
687da132 EG |
2055 | |
2056 | u8 sta_info_tx_streams(struct sta_info *sta) | |
2057 | { | |
2058 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
2059 | u8 rx_streams; | |
2060 | ||
2061 | if (!sta->sta.ht_cap.ht_supported) | |
2062 | return 1; | |
2063 | ||
2064 | if (sta->sta.vht_cap.vht_supported) { | |
2065 | int i; | |
2066 | u16 tx_mcs_map = | |
2067 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
2068 | ||
2069 | for (i = 7; i >= 0; i--) | |
2070 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
2071 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
2072 | return i + 1; | |
2073 | } | |
2074 | ||
2075 | if (ht_cap->mcs.rx_mask[3]) | |
2076 | rx_streams = 4; | |
2077 | else if (ht_cap->mcs.rx_mask[2]) | |
2078 | rx_streams = 3; | |
2079 | else if (ht_cap->mcs.rx_mask[1]) | |
2080 | rx_streams = 2; | |
2081 | else | |
2082 | rx_streams = 1; | |
2083 | ||
2084 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
2085 | return rx_streams; | |
2086 | ||
2087 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
2088 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
2089 | } | |
b7ffbd7e | 2090 | |
c9c5962b JB |
2091 | static struct ieee80211_sta_rx_stats * |
2092 | sta_get_last_rx_stats(struct sta_info *sta) | |
2093 | { | |
2094 | struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; | |
2095 | struct ieee80211_local *local = sta->local; | |
2096 | int cpu; | |
2097 | ||
2098 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) | |
2099 | return stats; | |
2100 | ||
2101 | for_each_possible_cpu(cpu) { | |
2102 | struct ieee80211_sta_rx_stats *cpustats; | |
2103 | ||
2104 | cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2105 | ||
2106 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2107 | stats = cpustats; | |
2108 | } | |
2109 | ||
2110 | return stats; | |
2111 | } | |
2112 | ||
41cbb0f5 | 2113 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2114 | struct rate_info *rinfo) |
fbd6ff5c | 2115 | { |
dcba665b | 2116 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2117 | |
dcba665b | 2118 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2119 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2120 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2121 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2122 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2123 | if (STA_STATS_GET(SGI, rate)) | |
2124 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2125 | break; |
2126 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2127 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2128 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2129 | if (STA_STATS_GET(SGI, rate)) | |
2130 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2131 | break; |
2132 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2133 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2134 | u16 brate; |
4f6b1b3d | 2135 | unsigned int shift; |
dcba665b JB |
2136 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2137 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2138 | |
dcba665b JB |
2139 | sband = local->hw.wiphy->bands[band]; |
2140 | brate = sband->bitrates[rate_idx].bitrate; | |
4f6b1b3d JB |
2141 | if (rinfo->bw == RATE_INFO_BW_5) |
2142 | shift = 2; | |
2143 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2144 | shift = 1; | |
2145 | else | |
2146 | shift = 0; | |
fbd6ff5c | 2147 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2148 | break; |
2149 | } | |
41cbb0f5 LC |
2150 | case STA_STATS_RATE_TYPE_HE: |
2151 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2152 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2153 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2154 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2155 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2156 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2157 | break; | |
fbd6ff5c | 2158 | } |
4f6b1b3d JB |
2159 | } |
2160 | ||
a17d93ff | 2161 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2162 | { |
6aa7de05 | 2163 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2164 | |
4f6b1b3d | 2165 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2166 | return -EINVAL; |
2167 | ||
2168 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2169 | return 0; | |
fbd6ff5c JB |
2170 | } |
2171 | ||
0f9c5a61 JB |
2172 | static void sta_set_tidstats(struct sta_info *sta, |
2173 | struct cfg80211_tid_stats *tidstats, | |
2174 | int tid) | |
2175 | { | |
2176 | struct ieee80211_local *local = sta->local; | |
2177 | ||
2178 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
2179 | unsigned int start; | |
2180 | ||
2181 | do { | |
2182 | start = u64_stats_fetch_begin(&sta->rx_stats.syncp); | |
2183 | tidstats->rx_msdu = sta->rx_stats.msdu[tid]; | |
2184 | } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start)); | |
2185 | ||
2186 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2187 | } | |
2188 | ||
2189 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2190 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
2191 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; | |
2192 | } | |
2193 | ||
2194 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2195 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2196 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
2197 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; | |
2198 | } | |
2199 | ||
2200 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2201 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2202 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
2203 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; | |
2204 | } | |
2fe4a29a THJ |
2205 | |
2206 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { | |
2207 | spin_lock_bh(&local->fq.lock); | |
2208 | rcu_read_lock(); | |
2209 | ||
2210 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2211 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2212 | to_txq_info(sta->sta.txq[tid])); | |
2213 | ||
2214 | rcu_read_unlock(); | |
2215 | spin_unlock_bh(&local->fq.lock); | |
2216 | } | |
0f9c5a61 JB |
2217 | } |
2218 | ||
c9c5962b JB |
2219 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2220 | { | |
2221 | unsigned int start; | |
2222 | u64 value; | |
2223 | ||
2224 | do { | |
2225 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2226 | value = rxstats->bytes; | |
2227 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2228 | ||
2229 | return value; | |
2230 | } | |
2231 | ||
0fdf1493 JB |
2232 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2233 | bool tidstats) | |
b7ffbd7e JB |
2234 | { |
2235 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2236 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2237 | u32 thr = 0; |
c9c5962b JB |
2238 | int i, ac, cpu; |
2239 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2240 | ||
2241 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2242 | |
2243 | sinfo->generation = sdata->local->sta_generation; | |
2244 | ||
225b8189 JB |
2245 | /* do before driver, so beacon filtering drivers have a |
2246 | * chance to e.g. just add the number of filtered beacons | |
2247 | * (or just modify the value entirely, of course) | |
2248 | */ | |
2249 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2250 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
2251 | ||
2b9a7e1b JB |
2252 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
2253 | ||
a4217750 OE |
2254 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2255 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2256 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2257 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
9cf02338 | 2258 | BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) | |
a4217750 | 2259 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); |
976bd9ef JB |
2260 | |
2261 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
2262 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
a4217750 | 2263 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2264 | } |
b7ffbd7e | 2265 | |
84b00607 | 2266 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
9cf02338 | 2267 | sinfo->assoc_at = sta->assoc_at; |
e5a9f8d0 | 2268 | sinfo->inactive_time = |
b8da6b6a | 2269 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2270 | |
a4217750 OE |
2271 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2272 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2273 | sinfo->tx_bytes = 0; |
2274 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2275 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
a4217750 | 2276 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2277 | } |
2278 | ||
a4217750 | 2279 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2280 | sinfo->tx_packets = 0; |
2281 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2282 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
a4217750 | 2283 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2284 | } |
2285 | ||
a4217750 OE |
2286 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2287 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
c9c5962b JB |
2288 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
2289 | ||
2290 | if (sta->pcpu_rx_stats) { | |
2291 | for_each_possible_cpu(cpu) { | |
2292 | struct ieee80211_sta_rx_stats *cpurxs; | |
2293 | ||
2294 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2295 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); | |
2296 | } | |
2297 | } | |
0f9c5a61 | 2298 | |
a4217750 | 2299 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2300 | } |
2301 | ||
a4217750 | 2302 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 2303 | sinfo->rx_packets = sta->rx_stats.packets; |
c9c5962b JB |
2304 | if (sta->pcpu_rx_stats) { |
2305 | for_each_possible_cpu(cpu) { | |
2306 | struct ieee80211_sta_rx_stats *cpurxs; | |
2307 | ||
2308 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2309 | sinfo->rx_packets += cpurxs->packets; | |
2310 | } | |
2311 | } | |
a4217750 | 2312 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2313 | } |
2314 | ||
a4217750 | 2315 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 2316 | sinfo->tx_retries = sta->status_stats.retry_count; |
a4217750 | 2317 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2318 | } |
2319 | ||
a4217750 | 2320 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 2321 | sinfo->tx_failed = sta->status_stats.retry_failed; |
a4217750 | 2322 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2323 | } |
2b9a7e1b | 2324 | |
b4809e94 THJ |
2325 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2326 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2327 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2328 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2329 | } | |
2330 | ||
2331 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2332 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2333 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2334 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2335 | } | |
2336 | ||
2337 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
2338 | sinfo->airtime_weight = sta->airtime_weight; | |
2339 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); | |
2340 | } | |
2341 | ||
e5a9f8d0 | 2342 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
c9c5962b JB |
2343 | if (sta->pcpu_rx_stats) { |
2344 | for_each_possible_cpu(cpu) { | |
2345 | struct ieee80211_sta_rx_stats *cpurxs; | |
2346 | ||
2347 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
e165bc02 | 2348 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2349 | } |
2350 | } | |
b7ffbd7e | 2351 | |
225b8189 JB |
2352 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2353 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2354 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2355 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2356 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2357 | } | |
2358 | ||
30686bf7 JB |
2359 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2360 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2361 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2362 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2363 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2364 | } |
2365 | ||
c9c5962b | 2366 | if (!sta->pcpu_rx_stats && |
a4217750 | 2367 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2368 | sinfo->signal_avg = |
0be6ed13 | 2369 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
a4217750 | 2370 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2371 | } |
b7ffbd7e | 2372 | } |
2b9a7e1b | 2373 | |
c9c5962b JB |
2374 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2375 | * the sta->rx_stats struct, so the check here is fine with and without | |
2376 | * pcpu statistics | |
2377 | */ | |
2378 | if (last_rxstats->chains && | |
a4217750 OE |
2379 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2380 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2381 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
c9c5962b | 2382 | if (!sta->pcpu_rx_stats) |
a4217750 | 2383 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2384 | |
2385 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2386 | |
b7ffbd7e | 2387 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2388 | sinfo->chain_signal[i] = |
c9c5962b | 2389 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2390 | sinfo->chain_signal_avg[i] = |
0be6ed13 | 2391 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2392 | } |
2393 | } | |
2394 | ||
a4217750 | 2395 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
2396 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
2397 | &sinfo->txrate); | |
a4217750 | 2398 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2399 | } |
2400 | ||
a4217750 | 2401 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))) { |
a17d93ff | 2402 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2403 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2404 | } |
b7ffbd7e | 2405 | |
0fdf1493 | 2406 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2407 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2408 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2409 | } |
2410 | ||
b7ffbd7e JB |
2411 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2412 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2413 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2414 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2415 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2416 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2417 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a BC |
2418 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
2419 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE); | |
b7ffbd7e | 2420 | |
433f5bc1 JB |
2421 | sinfo->llid = sta->mesh->llid; |
2422 | sinfo->plid = sta->mesh->plid; | |
2423 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2424 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2425 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2426 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2427 | } |
433f5bc1 JB |
2428 | sinfo->local_pm = sta->mesh->local_pm; |
2429 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2430 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2431 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
b7ffbd7e JB |
2432 | #endif |
2433 | } | |
2434 | ||
2435 | sinfo->bss_param.flags = 0; | |
2436 | if (sdata->vif.bss_conf.use_cts_prot) | |
2437 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2438 | if (sdata->vif.bss_conf.use_short_preamble) | |
2439 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2440 | if (sdata->vif.bss_conf.use_short_slot) | |
2441 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2442 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2443 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2444 | ||
2445 | sinfo->sta_flags.set = 0; | |
2446 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2447 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2448 | BIT(NL80211_STA_FLAG_WME) | | |
2449 | BIT(NL80211_STA_FLAG_MFP) | | |
2450 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2451 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2452 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2453 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2454 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2455 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2456 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2457 | if (sta->sta.wme) |
b7ffbd7e JB |
2458 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2459 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2460 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2461 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2462 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2463 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2464 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2465 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2466 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2467 | ||
3b17fbf8 MA |
2468 | thr = sta_get_expected_throughput(sta); |
2469 | ||
2470 | if (thr != 0) { | |
a4217750 | 2471 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2472 | sinfo->expected_throughput = thr; |
2473 | } | |
a78b26ff VN |
2474 | |
2475 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
2476 | sta->status_stats.ack_signal_filled) { | |
2477 | sinfo->ack_signal = sta->status_stats.last_ack_signal; | |
2478 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); | |
2479 | } | |
cc60dbbf | 2480 | |
9c06602b BP |
2481 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
2482 | sta->status_stats.ack_signal_filled) { | |
cc60dbbf BP |
2483 | sinfo->avg_ack_signal = |
2484 | -(s8)ewma_avg_signal_read( | |
2485 | &sta->status_stats.avg_ack_signal); | |
2486 | sinfo->filled |= | |
9c06602b | 2487 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2488 | } |
ab60633c NM |
2489 | |
2490 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2491 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2492 | sinfo->airtime_link_metric = | |
2493 | airtime_link_metric_get(local, sta); | |
2494 | } | |
3b17fbf8 MA |
2495 | } |
2496 | ||
2497 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2498 | { | |
2499 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2500 | struct ieee80211_local *local = sdata->local; | |
2501 | struct rate_control_ref *ref = NULL; | |
2502 | u32 thr = 0; | |
2503 | ||
2504 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2505 | ref = local->rate_ctrl; | |
2506 | ||
b7ffbd7e JB |
2507 | /* check if the driver has a SW RC implementation */ |
2508 | if (ref && ref->ops->get_expected_throughput) | |
2509 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2510 | else | |
4fdbc67a | 2511 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2512 | |
3b17fbf8 | 2513 | return thr; |
b7ffbd7e | 2514 | } |
b8da6b6a JB |
2515 | |
2516 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2517 | { | |
c9c5962b JB |
2518 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2519 | ||
285531f9 AZ |
2520 | if (!sta->status_stats.last_ack || |
2521 | time_after(stats->last_rx, sta->status_stats.last_ack)) | |
c9c5962b | 2522 | return stats->last_rx; |
b8da6b6a JB |
2523 | return sta->status_stats.last_ack; |
2524 | } | |
484a54c2 THJ |
2525 | |
2526 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2527 | { | |
2528 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2529 | return; | |
2530 | ||
2531 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2532 | sta->cparams.target = MS2TIME(50); | |
2533 | sta->cparams.interval = MS2TIME(300); | |
2534 | sta->cparams.ecn = false; | |
2535 | } else { | |
2536 | sta->cparams.target = MS2TIME(20); | |
2537 | sta->cparams.interval = MS2TIME(100); | |
2538 | sta->cparams.ecn = true; | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2543 | u32 thr) | |
2544 | { | |
2545 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2546 | ||
2547 | sta_update_codel_params(sta, thr); | |
2548 | } |