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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 |
bd718fc1 | 7 | * Copyright (C) 2018-2019 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 | ||
3b53fde8 JB |
213 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
214 | int idx) | |
ee385855 | 215 | { |
3b53fde8 | 216 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
217 | struct sta_info *sta; |
218 | int i = 0; | |
219 | ||
d0709a65 | 220 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 221 | if (sdata != sta->sdata) |
2a8ca29a | 222 | continue; |
ee385855 LCC |
223 | if (i < idx) { |
224 | ++i; | |
225 | continue; | |
ee385855 | 226 | } |
2a8ca29a | 227 | return sta; |
ee385855 | 228 | } |
ee385855 LCC |
229 | |
230 | return NULL; | |
231 | } | |
f0706e82 | 232 | |
93e5deb1 | 233 | /** |
d9a7ddb0 | 234 | * sta_info_free - free STA |
93e5deb1 | 235 | * |
6ef307bc | 236 | * @local: pointer to the global information |
93e5deb1 JB |
237 | * @sta: STA info to free |
238 | * | |
239 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
240 | * that may happen before sta_info_insert(). It may only be |
241 | * called when sta_info_insert() has not been attempted (and | |
242 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 243 | */ |
d9a7ddb0 | 244 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 245 | { |
889cbb91 | 246 | if (sta->rate_ctrl) |
af65cd96 | 247 | rate_control_free_sta(sta); |
93e5deb1 | 248 | |
bdcbd8e0 | 249 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 250 | |
ba8c3d6f FF |
251 | if (sta->sta.txq[0]) |
252 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 253 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
254 | #ifdef CONFIG_MAC80211_MESH |
255 | kfree(sta->mesh); | |
256 | #endif | |
c9c5962b | 257 | free_percpu(sta->pcpu_rx_stats); |
93e5deb1 JB |
258 | kfree(sta); |
259 | } | |
260 | ||
4d33960b | 261 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
262 | static int sta_info_hash_add(struct ieee80211_local *local, |
263 | struct sta_info *sta) | |
f0706e82 | 264 | { |
83e7e4ce HX |
265 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
266 | sta_rht_params); | |
f0706e82 | 267 | } |
f0706e82 | 268 | |
5ac2e350 | 269 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
270 | { |
271 | struct sta_info *sta; | |
272 | ||
5ac2e350 | 273 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
274 | |
275 | if (sta->dead) | |
276 | return; | |
277 | ||
5ac2e350 JB |
278 | local_bh_disable(); |
279 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 280 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 281 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 282 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 283 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 284 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 285 | local_bh_enable(); |
af818581 JB |
286 | } |
287 | ||
af65cd96 JB |
288 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
289 | struct sta_info *sta, gfp_t gfp) | |
290 | { | |
30686bf7 | 291 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
292 | return 0; |
293 | ||
889cbb91 | 294 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 295 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 296 | sta, gfp); |
889cbb91 | 297 | if (!sta->rate_ctrl_priv) |
af65cd96 | 298 | return -ENOMEM; |
af65cd96 JB |
299 | |
300 | return 0; | |
301 | } | |
302 | ||
73651ee6 | 303 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 304 | const u8 *addr, gfp_t gfp) |
f0706e82 | 305 | { |
d0709a65 | 306 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 307 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 308 | struct sta_info *sta; |
16c5f15c | 309 | int i; |
f0706e82 | 310 | |
ba8c3d6f | 311 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 312 | if (!sta) |
73651ee6 | 313 | return NULL; |
f0706e82 | 314 | |
c9c5962b JB |
315 | if (ieee80211_hw_check(hw, USES_RSS)) { |
316 | sta->pcpu_rx_stats = | |
95f3ce6a | 317 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
c9c5962b JB |
318 | if (!sta->pcpu_rx_stats) |
319 | goto free; | |
320 | } | |
321 | ||
07346f81 | 322 | spin_lock_init(&sta->lock); |
1d147bfa | 323 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 324 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 325 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 326 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 327 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
328 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
329 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
330 | if (!sta->mesh) | |
331 | goto free; | |
4c02d62f | 332 | sta->mesh->plink_sta = sta; |
433f5bc1 JB |
333 | spin_lock_init(&sta->mesh->plink_lock); |
334 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
335 | !sdata->u.mesh.user_mpm) | |
4c02d62f KC |
336 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
337 | 0); | |
433f5bc1 JB |
338 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
339 | } | |
87f59c70 | 340 | #endif |
07346f81 | 341 | |
ac100ce5 | 342 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 343 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
480dd46b MA |
344 | sta->sta.max_rx_aggregation_subframes = |
345 | local->hw.max_rx_aggregation_subframes; | |
346 | ||
96fc6efb AW |
347 | /* Extended Key ID needs to install keys for keyid 0 and 1 Rx-only. |
348 | * The Tx path starts to use a key as soon as the key slot ptk_idx | |
349 | * references to is not NULL. To not use the initial Rx-only key | |
350 | * prematurely for Tx initialize ptk_idx to an impossible PTK keyid | |
351 | * which always will refer to a NULL key. | |
352 | */ | |
353 | BUILD_BUG_ON(ARRAY_SIZE(sta->ptk) <= INVALID_PTK_KEYIDX); | |
354 | sta->ptk_idx = INVALID_PTK_KEYIDX; | |
355 | ||
d0709a65 JB |
356 | sta->local = local; |
357 | sta->sdata = sdata; | |
e5a9f8d0 | 358 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 359 | |
0f9c5a61 JB |
360 | u64_stats_init(&sta->rx_stats.syncp); |
361 | ||
71ec375c JB |
362 | sta->sta_state = IEEE80211_STA_NONE; |
363 | ||
b6da911b LK |
364 | /* Mark TID as unreserved */ |
365 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
366 | ||
84b00607 | 367 | sta->last_connected = ktime_get_seconds(); |
0be6ed13 | 368 | ewma_signal_init(&sta->rx_stats_avg.signal); |
cc60dbbf | 369 | ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
0be6ed13 JB |
370 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
371 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); | |
541a45a1 | 372 | |
ba8c3d6f FF |
373 | if (local->ops->wake_tx_queue) { |
374 | void *txq_data; | |
375 | int size = sizeof(struct txq_info) + | |
376 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
377 | ||
378 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
379 | if (!txq_data) | |
380 | goto free; | |
381 | ||
382 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
383 | struct txq_info *txq = txq_data + i * size; | |
384 | ||
adf8ed01 | 385 | /* might not do anything for the bufferable MMPDU TXQ */ |
fa962b92 | 386 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 387 | } |
abfbc3af | 388 | } |
f0706e82 | 389 | |
ba8c3d6f FF |
390 | if (sta_prepare_rate_control(local, sta, gfp)) |
391 | goto free_txq; | |
392 | ||
b4809e94 THJ |
393 | sta->airtime_weight = IEEE80211_DEFAULT_AIRTIME_WEIGHT; |
394 | ||
948d887d JB |
395 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
396 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
397 | skb_queue_head_init(&sta->tx_filtered[i]); | |
b4809e94 | 398 | sta->airtime[i].deficit = sta->airtime_weight; |
948d887d | 399 | } |
73651ee6 | 400 | |
5a306f58 | 401 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 402 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 403 | |
bd718fc1 JB |
404 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
405 | u32 mandatory = 0; | |
406 | int r; | |
407 | ||
408 | if (!hw->wiphy->bands[i]) | |
409 | continue; | |
410 | ||
411 | switch (i) { | |
412 | case NL80211_BAND_2GHZ: | |
413 | /* | |
414 | * We use both here, even if we cannot really know for | |
415 | * sure the station will support both, but the only use | |
416 | * for this is when we don't know anything yet and send | |
417 | * management frames, and then we'll pick the lowest | |
418 | * possible rate anyway. | |
419 | * If we don't include _G here, we cannot find a rate | |
420 | * in P2P, and thus trigger the WARN_ONCE() in rate.c | |
421 | */ | |
422 | mandatory = IEEE80211_RATE_MANDATORY_B | | |
423 | IEEE80211_RATE_MANDATORY_G; | |
424 | break; | |
425 | case NL80211_BAND_5GHZ: | |
426 | mandatory = IEEE80211_RATE_MANDATORY_A; | |
427 | break; | |
428 | case NL80211_BAND_60GHZ: | |
429 | WARN_ON(1); | |
430 | mandatory = 0; | |
431 | break; | |
432 | } | |
433 | ||
434 | for (r = 0; r < hw->wiphy->bands[i]->n_bitrates; r++) { | |
435 | struct ieee80211_rate *rate; | |
436 | ||
437 | rate = &hw->wiphy->bands[i]->bitrates[r]; | |
438 | ||
439 | if (!(rate->flags & mandatory)) | |
440 | continue; | |
441 | sta->sta.supp_rates[i] |= BIT(r); | |
442 | } | |
443 | } | |
444 | ||
af0ed69b | 445 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
446 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
447 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
21a8e9dd MSS |
448 | struct ieee80211_supported_band *sband; |
449 | u8 smps; | |
450 | ||
451 | sband = ieee80211_get_sband(sdata); | |
452 | if (!sband) | |
453 | goto free_txq; | |
454 | ||
455 | smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> | |
456 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
687da132 EG |
457 | /* |
458 | * Assume that hostapd advertises our caps in the beacon and | |
459 | * this is the known_smps_mode for a station that just assciated | |
460 | */ | |
461 | switch (smps) { | |
462 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
463 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
464 | break; | |
465 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
466 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
467 | break; | |
468 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
469 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
470 | break; | |
471 | default: | |
472 | WARN_ON(1); | |
473 | } | |
474 | } | |
af0ed69b | 475 | |
6e0456b5 FF |
476 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
477 | ||
484a54c2 THJ |
478 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
479 | sta->cparams.target = MS2TIME(20); | |
480 | sta->cparams.interval = MS2TIME(100); | |
481 | sta->cparams.ecn = true; | |
482 | ||
bdcbd8e0 | 483 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 484 | |
abfbc3af | 485 | return sta; |
ba8c3d6f FF |
486 | |
487 | free_txq: | |
488 | if (sta->sta.txq[0]) | |
489 | kfree(to_txq_info(sta->sta.txq[0])); | |
490 | free: | |
d78d9ee9 | 491 | free_percpu(sta->pcpu_rx_stats); |
433f5bc1 JB |
492 | #ifdef CONFIG_MAC80211_MESH |
493 | kfree(sta->mesh); | |
494 | #endif | |
ba8c3d6f FF |
495 | kfree(sta); |
496 | return NULL; | |
73651ee6 JB |
497 | } |
498 | ||
8c71df7a | 499 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 500 | { |
34e89507 | 501 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 502 | |
03e4497e JB |
503 | /* |
504 | * Can't be a WARN_ON because it can be triggered through a race: | |
505 | * something inserts a STA (on one CPU) without holding the RTNL | |
506 | * and another CPU turns off the net device. | |
507 | */ | |
8c71df7a GE |
508 | if (unlikely(!ieee80211_sdata_running(sdata))) |
509 | return -ENETDOWN; | |
03e4497e | 510 | |
b203ca39 | 511 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
512 | is_multicast_ether_addr(sta->sta.addr))) |
513 | return -EINVAL; | |
514 | ||
83e7e4ce HX |
515 | /* The RCU read lock is required by rhashtable due to |
516 | * asynchronous resize/rehash. We also require the mutex | |
517 | * for correctness. | |
31104891 JB |
518 | */ |
519 | rcu_read_lock(); | |
520 | lockdep_assert_held(&sdata->local->sta_mtx); | |
521 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
522 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
523 | rcu_read_unlock(); | |
524 | return -ENOTUNIQ; | |
525 | } | |
526 | rcu_read_unlock(); | |
527 | ||
8c71df7a GE |
528 | return 0; |
529 | } | |
530 | ||
f09603a2 JB |
531 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
532 | struct ieee80211_sub_if_data *sdata, | |
533 | struct sta_info *sta) | |
534 | { | |
535 | enum ieee80211_sta_state state; | |
536 | int err = 0; | |
537 | ||
538 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
539 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
540 | if (err) | |
541 | break; | |
542 | } | |
543 | ||
544 | if (!err) { | |
a4ec45a4 JB |
545 | /* |
546 | * Drivers using legacy sta_add/sta_remove callbacks only | |
547 | * get uploaded set to true after sta_add is called. | |
548 | */ | |
549 | if (!local->ops->sta_add) | |
550 | sta->uploaded = true; | |
f09603a2 JB |
551 | return 0; |
552 | } | |
553 | ||
554 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
555 | sdata_info(sdata, |
556 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
557 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
558 | err = 0; |
559 | } | |
560 | ||
561 | /* unwind on error */ | |
562 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
563 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
564 | ||
565 | return err; | |
566 | } | |
567 | ||
d405fd8c GG |
568 | static void |
569 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
570 | { | |
571 | struct ieee80211_local *local = sdata->local; | |
572 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
573 | struct sta_info *sta; | |
574 | ||
575 | rcu_read_lock(); | |
576 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
577 | if (sdata != sta->sdata || | |
578 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
579 | continue; | |
580 | if (!sta->sta.support_p2p_ps) { | |
581 | allow_p2p_go_ps = false; | |
582 | break; | |
583 | } | |
584 | } | |
585 | rcu_read_unlock(); | |
586 | ||
587 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
588 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
589 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); | |
590 | } | |
591 | } | |
592 | ||
8c71df7a GE |
593 | /* |
594 | * should be called with sta_mtx locked | |
595 | * this function replaces the mutex lock | |
596 | * with a RCU lock | |
597 | */ | |
4d33960b | 598 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
599 | { |
600 | struct ieee80211_local *local = sta->local; | |
601 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 602 | struct station_info *sinfo = NULL; |
8c71df7a GE |
603 | int err = 0; |
604 | ||
605 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 606 | |
7852e361 JB |
607 | /* check if STA exists already */ |
608 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
609 | err = -EEXIST; | |
610 | goto out_err; | |
4d33960b | 611 | } |
32bfd35d | 612 | |
0c2e3842 KV |
613 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
614 | if (!sinfo) { | |
615 | err = -ENOMEM; | |
616 | goto out_err; | |
617 | } | |
618 | ||
7852e361 JB |
619 | local->num_sta++; |
620 | local->sta_generation++; | |
621 | smp_mb(); | |
4d33960b | 622 | |
5108ca82 JB |
623 | /* simplify things and don't accept BA sessions yet */ |
624 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
625 | ||
7852e361 | 626 | /* make the station visible */ |
62b14b24 JB |
627 | err = sta_info_hash_add(local, sta); |
628 | if (err) | |
629 | goto out_drop_sta; | |
83d5cc01 | 630 | |
2bad7748 | 631 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 632 | |
5108ca82 JB |
633 | /* notify driver */ |
634 | err = sta_info_insert_drv_state(local, sdata, sta); | |
635 | if (err) | |
636 | goto out_remove; | |
637 | ||
7852e361 | 638 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c GG |
639 | |
640 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
641 | ieee80211_recalc_min_chandef(sta->sdata); | |
642 | if (!sta->sta.support_p2p_ps) | |
643 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
644 | } | |
645 | ||
5108ca82 JB |
646 | /* accept BA sessions now */ |
647 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 648 | |
7852e361 JB |
649 | ieee80211_sta_debugfs_add(sta); |
650 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 651 | |
0ef049dc AB |
652 | sinfo->generation = local->sta_generation; |
653 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
654 | kfree(sinfo); | |
d0709a65 | 655 | |
bdcbd8e0 | 656 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 657 | |
34e89507 JB |
658 | /* move reference to rcu-protected */ |
659 | rcu_read_lock(); | |
660 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 661 | |
73651ee6 JB |
662 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
663 | mesh_accept_plinks_update(sdata); | |
664 | ||
8c71df7a | 665 | return 0; |
5108ca82 JB |
666 | out_remove: |
667 | sta_info_hash_del(local, sta); | |
668 | list_del_rcu(&sta->list); | |
62b14b24 | 669 | out_drop_sta: |
5108ca82 JB |
670 | local->num_sta--; |
671 | synchronize_net(); | |
672 | __cleanup_single_sta(sta); | |
4d33960b JB |
673 | out_err: |
674 | mutex_unlock(&local->sta_mtx); | |
ea32f065 | 675 | kfree(sinfo); |
4d33960b JB |
676 | rcu_read_lock(); |
677 | return err; | |
8c71df7a GE |
678 | } |
679 | ||
680 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
681 | { | |
682 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 683 | int err; |
8c71df7a | 684 | |
4d33960b JB |
685 | might_sleep(); |
686 | ||
31104891 JB |
687 | mutex_lock(&local->sta_mtx); |
688 | ||
8c71df7a GE |
689 | err = sta_info_insert_check(sta); |
690 | if (err) { | |
31104891 | 691 | mutex_unlock(&local->sta_mtx); |
8c71df7a GE |
692 | rcu_read_lock(); |
693 | goto out_free; | |
694 | } | |
695 | ||
4d33960b | 696 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
697 | if (err) |
698 | goto out_free; | |
699 | ||
73651ee6 | 700 | return 0; |
93e5deb1 | 701 | out_free: |
d9a7ddb0 | 702 | sta_info_free(local, sta); |
93e5deb1 | 703 | return err; |
f0706e82 JB |
704 | } |
705 | ||
34e89507 JB |
706 | int sta_info_insert(struct sta_info *sta) |
707 | { | |
708 | int err = sta_info_insert_rcu(sta); | |
709 | ||
710 | rcu_read_unlock(); | |
711 | ||
712 | return err; | |
713 | } | |
714 | ||
d012a605 | 715 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
716 | { |
717 | /* | |
718 | * This format has been mandated by the IEEE specifications, | |
719 | * so this line may not be changed to use the __set_bit() format. | |
720 | */ | |
d012a605 | 721 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
722 | } |
723 | ||
d012a605 | 724 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
725 | { |
726 | /* | |
727 | * This format has been mandated by the IEEE specifications, | |
728 | * so this line may not be changed to use the __clear_bit() format. | |
729 | */ | |
d012a605 | 730 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
731 | } |
732 | ||
3d5839b6 IP |
733 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
734 | { | |
735 | /* | |
736 | * This format has been mandated by the IEEE specifications, | |
737 | * so this line may not be changed to use the test_bit() format. | |
738 | */ | |
739 | return tim[id / 8] & (1 << (id % 8)); | |
740 | } | |
741 | ||
948d887d | 742 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 743 | { |
948d887d JB |
744 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
745 | switch (ac) { | |
746 | case IEEE80211_AC_VO: | |
747 | return BIT(6) | BIT(7); | |
748 | case IEEE80211_AC_VI: | |
749 | return BIT(4) | BIT(5); | |
750 | case IEEE80211_AC_BE: | |
751 | return BIT(0) | BIT(3); | |
752 | case IEEE80211_AC_BK: | |
753 | return BIT(1) | BIT(2); | |
754 | default: | |
755 | WARN_ON(1); | |
756 | return 0; | |
d0709a65 | 757 | } |
004c872e JB |
758 | } |
759 | ||
9b7a86f3 | 760 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 761 | { |
c868cb35 | 762 | struct ieee80211_local *local = sta->local; |
d012a605 | 763 | struct ps_data *ps; |
948d887d JB |
764 | bool indicate_tim = false; |
765 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
766 | int ac; | |
a69bd8e6 | 767 | u16 id = sta->sta.aid; |
d012a605 MP |
768 | |
769 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
770 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
771 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
772 | return; | |
004c872e | 773 | |
d012a605 | 774 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
775 | #ifdef CONFIG_MAC80211_MESH |
776 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
777 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 778 | #endif |
d012a605 | 779 | } else { |
c868cb35 | 780 | return; |
d012a605 | 781 | } |
3e122be0 | 782 | |
c868cb35 | 783 | /* No need to do anything if the driver does all */ |
d98937f4 | 784 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 785 | return; |
004c872e | 786 | |
c868cb35 JB |
787 | if (sta->dead) |
788 | goto done; | |
3e122be0 | 789 | |
948d887d JB |
790 | /* |
791 | * If all ACs are delivery-enabled then we should build | |
792 | * the TIM bit for all ACs anyway; if only some are then | |
793 | * we ignore those and build the TIM bit using only the | |
794 | * non-enabled ones. | |
795 | */ | |
796 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
797 | ignore_for_tim = 0; | |
798 | ||
9b7a86f3 JB |
799 | if (ignore_pending) |
800 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
801 | ||
948d887d JB |
802 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
803 | unsigned long tids; | |
3e122be0 | 804 | |
f438ceb8 | 805 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
806 | continue; |
807 | ||
808 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
809 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
810 | if (indicate_tim) | |
811 | break; | |
3e122be0 | 812 | |
948d887d JB |
813 | tids = ieee80211_tids_for_ac(ac); |
814 | ||
815 | indicate_tim |= | |
816 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
817 | indicate_tim |= |
818 | sta->txq_buffered_tids & tids; | |
d0709a65 | 819 | } |
004c872e | 820 | |
c868cb35 | 821 | done: |
65f704a5 | 822 | spin_lock_bh(&local->tim_lock); |
004c872e | 823 | |
3d5839b6 IP |
824 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
825 | goto out_unlock; | |
826 | ||
948d887d | 827 | if (indicate_tim) |
d012a605 | 828 | __bss_tim_set(ps->tim, id); |
c868cb35 | 829 | else |
d012a605 | 830 | __bss_tim_clear(ps->tim, id); |
004c872e | 831 | |
9b7a86f3 | 832 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 833 | local->tim_in_locked_section = true; |
948d887d | 834 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
835 | local->tim_in_locked_section = false; |
836 | } | |
3e122be0 | 837 | |
3d5839b6 | 838 | out_unlock: |
65f704a5 | 839 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
840 | } |
841 | ||
9b7a86f3 JB |
842 | void sta_info_recalc_tim(struct sta_info *sta) |
843 | { | |
844 | __sta_info_recalc_tim(sta, false); | |
845 | } | |
846 | ||
cd0b8d89 | 847 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 848 | { |
e039fa4a | 849 | struct ieee80211_tx_info *info; |
f0706e82 JB |
850 | int timeout; |
851 | ||
852 | if (!skb) | |
cd0b8d89 | 853 | return false; |
f0706e82 | 854 | |
e039fa4a | 855 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
856 | |
857 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
858 | timeout = (sta->listen_interval * |
859 | sta->sdata->vif.bss_conf.beacon_int * | |
860 | 32 / 15625) * HZ; | |
f0706e82 JB |
861 | if (timeout < STA_TX_BUFFER_EXPIRE) |
862 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 863 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
864 | } |
865 | ||
866 | ||
948d887d JB |
867 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
868 | struct sta_info *sta, int ac) | |
f0706e82 JB |
869 | { |
870 | unsigned long flags; | |
871 | struct sk_buff *skb; | |
872 | ||
60750397 JB |
873 | /* |
874 | * First check for frames that should expire on the filtered | |
875 | * queue. Frames here were rejected by the driver and are on | |
876 | * a separate queue to avoid reordering with normal PS-buffered | |
877 | * frames. They also aren't accounted for right now in the | |
878 | * total_ps_buffered counter. | |
879 | */ | |
880 | for (;;) { | |
948d887d JB |
881 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
882 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 883 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 884 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
885 | else |
886 | skb = NULL; | |
948d887d | 887 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
888 | |
889 | /* | |
890 | * Frames are queued in order, so if this one | |
891 | * hasn't expired yet we can stop testing. If | |
892 | * we actually reached the end of the queue we | |
893 | * also need to stop, of course. | |
894 | */ | |
895 | if (!skb) | |
896 | break; | |
d4fa14cd | 897 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
898 | } |
899 | ||
900 | /* | |
901 | * Now also check the normal PS-buffered queue, this will | |
902 | * only find something if the filtered queue was emptied | |
903 | * since the filtered frames are all before the normal PS | |
904 | * buffered frames. | |
905 | */ | |
f0706e82 | 906 | for (;;) { |
948d887d JB |
907 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
908 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 909 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 910 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 911 | else |
f0706e82 | 912 | skb = NULL; |
948d887d | 913 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 914 | |
60750397 JB |
915 | /* |
916 | * frames are queued in order, so if this one | |
917 | * hasn't expired yet (or we reached the end of | |
918 | * the queue) we can stop testing | |
919 | */ | |
836341a7 | 920 | if (!skb) |
f0706e82 | 921 | break; |
836341a7 | 922 | |
836341a7 | 923 | local->total_ps_buffered--; |
bdcbd8e0 JB |
924 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
925 | sta->sta.addr); | |
d4fa14cd | 926 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 927 | } |
3393a608 | 928 | |
60750397 JB |
929 | /* |
930 | * Finally, recalculate the TIM bit for this station -- it might | |
931 | * now be clear because the station was too slow to retrieve its | |
932 | * frames. | |
933 | */ | |
934 | sta_info_recalc_tim(sta); | |
935 | ||
936 | /* | |
937 | * Return whether there are any frames still buffered, this is | |
938 | * used to check whether the cleanup timer still needs to run, | |
939 | * if there are no frames we don't need to rearm the timer. | |
940 | */ | |
948d887d JB |
941 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
942 | skb_queue_empty(&sta->tx_filtered[ac])); | |
943 | } | |
944 | ||
945 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
946 | struct sta_info *sta) | |
947 | { | |
948 | bool have_buffered = false; | |
949 | int ac; | |
950 | ||
3f52b7e3 MP |
951 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
952 | if (!sta->sdata->bss && | |
953 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
954 | return false; |
955 | ||
956 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
957 | have_buffered |= | |
958 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
959 | ||
960 | return have_buffered; | |
f0706e82 JB |
961 | } |
962 | ||
d778207b | 963 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 964 | { |
34e89507 JB |
965 | struct ieee80211_local *local; |
966 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 967 | int ret; |
f0706e82 | 968 | |
34e89507 | 969 | might_sleep(); |
f0706e82 | 970 | |
34e89507 JB |
971 | if (!sta) |
972 | return -ENOENT; | |
5bb644a0 | 973 | |
34e89507 JB |
974 | local = sta->local; |
975 | sdata = sta->sdata; | |
f0706e82 | 976 | |
83d5cc01 JB |
977 | lockdep_assert_held(&local->sta_mtx); |
978 | ||
098a6070 JB |
979 | /* |
980 | * Before removing the station from the driver and | |
981 | * rate control, it might still start new aggregation | |
982 | * sessions -- block that to make sure the tear-down | |
983 | * will be sufficient. | |
984 | */ | |
c2c98fde | 985 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 986 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 987 | |
f59374eb SS |
988 | /* |
989 | * Before removing the station from the driver there might be pending | |
990 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
991 | * all such frames to be processed. | |
992 | */ | |
993 | drv_sync_rx_queues(local, sta); | |
994 | ||
34e89507 | 995 | ret = sta_info_hash_del(local, sta); |
b01711be | 996 | if (WARN_ON(ret)) |
34e89507 JB |
997 | return ret; |
998 | ||
a7a6bdd0 AN |
999 | /* |
1000 | * for TDLS peers, make sure to return to the base channel before | |
1001 | * removal. | |
1002 | */ | |
1003 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
1004 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
1005 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
1006 | } | |
1007 | ||
794454ce | 1008 | list_del_rcu(&sta->list); |
ef044763 | 1009 | sta->removed = true; |
4d33960b | 1010 | |
6a9d1b91 JB |
1011 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
1012 | ||
a710c816 JB |
1013 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
1014 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
1015 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
1016 | ||
d778207b JB |
1017 | return 0; |
1018 | } | |
1019 | ||
1020 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
1021 | { | |
1022 | struct ieee80211_local *local = sta->local; | |
1023 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 1024 | struct station_info *sinfo; |
d778207b JB |
1025 | int ret; |
1026 | ||
1027 | /* | |
1028 | * NOTE: This assumes at least synchronize_net() was done | |
1029 | * after _part1 and before _part2! | |
1030 | */ | |
1031 | ||
1032 | might_sleep(); | |
1033 | lockdep_assert_held(&local->sta_mtx); | |
1034 | ||
c8782078 | 1035 | /* now keys can no longer be reached */ |
6d10e46b | 1036 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 1037 | |
9b7a86f3 JB |
1038 | /* disable TIM bit - last chance to tell driver */ |
1039 | __sta_info_recalc_tim(sta, true); | |
1040 | ||
34e89507 JB |
1041 | sta->dead = true; |
1042 | ||
34e89507 JB |
1043 | local->num_sta--; |
1044 | local->sta_generation++; | |
1045 | ||
83d5cc01 | 1046 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
1047 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
1048 | if (ret) { | |
83d5cc01 JB |
1049 | WARN_ON_ONCE(1); |
1050 | break; | |
1051 | } | |
1052 | } | |
d9a7ddb0 | 1053 | |
f09603a2 | 1054 | if (sta->uploaded) { |
f09603a2 JB |
1055 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1056 | IEEE80211_STA_NOTEXIST); | |
1057 | WARN_ON_ONCE(ret != 0); | |
1058 | } | |
34e89507 | 1059 | |
bdcbd8e0 JB |
1060 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1061 | ||
0ef049dc AB |
1062 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1063 | if (sinfo) | |
0fdf1493 | 1064 | sta_set_sinfo(sta, sinfo, true); |
0ef049dc AB |
1065 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); |
1066 | kfree(sinfo); | |
ec15e68b | 1067 | |
34e89507 JB |
1068 | rate_control_remove_sta_debugfs(sta); |
1069 | ieee80211_sta_debugfs_remove(sta); | |
1070 | ||
d34ba216 | 1071 | cleanup_single_sta(sta); |
d778207b JB |
1072 | } |
1073 | ||
1074 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1075 | { | |
1076 | int err = __sta_info_destroy_part1(sta); | |
1077 | ||
1078 | if (err) | |
1079 | return err; | |
1080 | ||
1081 | synchronize_net(); | |
1082 | ||
1083 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1084 | |
1085 | return 0; | |
4d6141c3 JS |
1086 | } |
1087 | ||
34e89507 | 1088 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1089 | { |
34e89507 JB |
1090 | struct sta_info *sta; |
1091 | int ret; | |
4d6141c3 | 1092 | |
34e89507 | 1093 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1094 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1095 | ret = __sta_info_destroy(sta); |
1096 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1097 | |
1098 | return ret; | |
1099 | } | |
1100 | ||
34e89507 JB |
1101 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1102 | const u8 *addr) | |
e9f207f0 | 1103 | { |
34e89507 JB |
1104 | struct sta_info *sta; |
1105 | int ret; | |
e9f207f0 | 1106 | |
34e89507 | 1107 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1108 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1109 | ret = __sta_info_destroy(sta); |
1110 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1111 | |
34e89507 JB |
1112 | return ret; |
1113 | } | |
e9f207f0 | 1114 | |
34f11cd3 | 1115 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1116 | { |
34f11cd3 | 1117 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1118 | struct sta_info *sta; |
3393a608 | 1119 | bool timer_needed = false; |
34e89507 JB |
1120 | |
1121 | rcu_read_lock(); | |
1122 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1123 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1124 | timer_needed = true; | |
34e89507 | 1125 | rcu_read_unlock(); |
e9f207f0 | 1126 | |
34e89507 JB |
1127 | if (local->quiescing) |
1128 | return; | |
d0709a65 | 1129 | |
3393a608 JO |
1130 | if (!timer_needed) |
1131 | return; | |
1132 | ||
26d59535 JB |
1133 | mod_timer(&local->sta_cleanup, |
1134 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1135 | } |
e9f207f0 | 1136 | |
7bedd0cf JB |
1137 | int sta_info_init(struct ieee80211_local *local) |
1138 | { | |
1139 | int err; | |
1140 | ||
83e7e4ce | 1141 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1142 | if (err) |
1143 | return err; | |
1144 | ||
4d33960b | 1145 | spin_lock_init(&local->tim_lock); |
34e89507 | 1146 | mutex_init(&local->sta_mtx); |
f0706e82 | 1147 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1148 | |
34f11cd3 | 1149 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1150 | return 0; |
f0706e82 JB |
1151 | } |
1152 | ||
1153 | void sta_info_stop(struct ieee80211_local *local) | |
1154 | { | |
a56f992c | 1155 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1156 | rhltable_destroy(&local->sta_hash); |
f0706e82 JB |
1157 | } |
1158 | ||
051007d9 | 1159 | |
e716251d | 1160 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1161 | { |
b998e8bb | 1162 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1163 | struct sta_info *sta, *tmp; |
d778207b | 1164 | LIST_HEAD(free_list); |
44213b5e | 1165 | int ret = 0; |
f0706e82 | 1166 | |
d0709a65 | 1167 | might_sleep(); |
be8755e1 | 1168 | |
e716251d JB |
1169 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1170 | WARN_ON(vlans && !sdata->bss); | |
1171 | ||
34e89507 | 1172 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1173 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1174 | if (sdata == sta->sdata || |
1175 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1176 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1177 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1178 | ret++; |
1179 | } | |
be8755e1 | 1180 | } |
d778207b JB |
1181 | |
1182 | if (!list_empty(&free_list)) { | |
1183 | synchronize_net(); | |
1184 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1185 | __sta_info_destroy_part2(sta); | |
1186 | } | |
34e89507 | 1187 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1188 | |
051007d9 JB |
1189 | return ret; |
1190 | } | |
1191 | ||
24723d1b JB |
1192 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1193 | unsigned long exp_time) | |
1194 | { | |
1195 | struct ieee80211_local *local = sdata->local; | |
1196 | struct sta_info *sta, *tmp; | |
24723d1b | 1197 | |
34e89507 | 1198 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1199 | |
1200 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1201 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1202 | ||
ec2b774e ML |
1203 | if (sdata != sta->sdata) |
1204 | continue; | |
1205 | ||
b8da6b6a | 1206 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1207 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1208 | sta->sta.addr); | |
3f52b7e3 MP |
1209 | |
1210 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1211 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1212 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1213 | ||
34e89507 | 1214 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1215 | } |
e46a2cf9 MSS |
1216 | } |
1217 | ||
34e89507 | 1218 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1219 | } |
17741cdc | 1220 | |
686b9cb9 | 1221 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1222 | const u8 *addr, |
1223 | const u8 *localaddr) | |
17741cdc | 1224 | { |
7bedd0cf | 1225 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1226 | struct rhlist_head *tmp; |
7bedd0cf | 1227 | struct sta_info *sta; |
17741cdc | 1228 | |
686b9cb9 BG |
1229 | /* |
1230 | * Just return a random station if localaddr is NULL | |
1231 | * ... first in list. | |
1232 | */ | |
83e7e4ce | 1233 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1234 | if (localaddr && |
b203ca39 | 1235 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1236 | continue; |
f7c65594 JB |
1237 | if (!sta->uploaded) |
1238 | return NULL; | |
abe60632 | 1239 | return &sta->sta; |
f7c65594 JB |
1240 | } |
1241 | ||
abe60632 | 1242 | return NULL; |
17741cdc | 1243 | } |
686b9cb9 | 1244 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1245 | |
1246 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1247 | const u8 *addr) | |
1248 | { | |
f7c65594 | 1249 | struct sta_info *sta; |
5ed176e1 JB |
1250 | |
1251 | if (!vif) | |
1252 | return NULL; | |
1253 | ||
f7c65594 JB |
1254 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1255 | if (!sta) | |
1256 | return NULL; | |
1257 | ||
1258 | if (!sta->uploaded) | |
1259 | return NULL; | |
5ed176e1 | 1260 | |
f7c65594 | 1261 | return &sta->sta; |
5ed176e1 | 1262 | } |
17741cdc | 1263 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1264 | |
e3685e03 JB |
1265 | /* powersave support code */ |
1266 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1267 | { |
608383bf | 1268 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1269 | struct ieee80211_local *local = sdata->local; |
1270 | struct sk_buff_head pending; | |
ba8c3d6f | 1271 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1272 | unsigned long flags; |
d012a605 MP |
1273 | struct ps_data *ps; |
1274 | ||
3918edb0 FF |
1275 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1276 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1277 | u.ap); | |
1278 | ||
1279 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1280 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1281 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1282 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1283 | else |
1284 | return; | |
50a9432d | 1285 | |
c2c98fde | 1286 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1287 | |
5a306f58 | 1288 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1289 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1290 | sta->txq_buffered_tids = 0; |
af818581 | 1291 | |
30686bf7 | 1292 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1293 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1294 | |
adf8ed01 JB |
1295 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { |
1296 | if (!sta->sta.txq[i] || !txq_has_queue(sta->sta.txq[i])) | |
1297 | continue; | |
ba8c3d6f | 1298 | |
18667600 | 1299 | schedule_and_wake_txq(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1300 | } |
1301 | ||
948d887d | 1302 | skb_queue_head_init(&pending); |
af818581 | 1303 | |
1d147bfa EG |
1304 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1305 | spin_lock(&sta->ps_lock); | |
af818581 | 1306 | /* Send all buffered frames to the station */ |
948d887d JB |
1307 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1308 | int count = skb_queue_len(&pending), tmp; | |
1309 | ||
987c285c | 1310 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1311 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1312 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1313 | tmp = skb_queue_len(&pending); |
1314 | filtered += tmp - count; | |
1315 | count = tmp; | |
1316 | ||
987c285c | 1317 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1318 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1319 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1320 | tmp = skb_queue_len(&pending); |
1321 | buffered += tmp - count; | |
1322 | } | |
1323 | ||
e3685e03 | 1324 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1325 | |
1326 | /* now we're no longer in the deliver code */ | |
1327 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1328 | ||
1329 | /* The station might have polled and then woken up before we responded, | |
1330 | * so clear these flags now to avoid them sticking around. | |
1331 | */ | |
1332 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1333 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1334 | spin_unlock(&sta->ps_lock); |
948d887d | 1335 | |
e3685e03 JB |
1336 | atomic_dec(&ps->num_sta_ps); |
1337 | ||
687da132 | 1338 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1339 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1340 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1341 | sdata->smps_mode) && |
1342 | sta->known_smps_mode != sdata->bss->req_smps && | |
1343 | sta_info_tx_streams(sta) != 1) { | |
1344 | ht_dbg(sdata, | |
1345 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1346 | sta->sta.addr); | |
1347 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1348 | sta->sta.addr, | |
1349 | sdata->vif.bss_conf.bssid); | |
1350 | } | |
1351 | ||
af818581 JB |
1352 | local->total_ps_buffered -= buffered; |
1353 | ||
c868cb35 JB |
1354 | sta_info_recalc_tim(sta); |
1355 | ||
bdcbd8e0 | 1356 | ps_dbg(sdata, |
2595d259 | 1357 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1358 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1359 | |
1360 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1361 | } |
1362 | ||
0ead2510 | 1363 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1364 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1365 | bool call_driver, bool more_data) |
af818581 | 1366 | { |
0ead2510 | 1367 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1368 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1369 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1370 | struct sk_buff *skb; |
ce662b44 JB |
1371 | int size = sizeof(*nullfunc); |
1372 | __le16 fc; | |
a74a8c84 | 1373 | bool qos = sta->sta.wme; |
ce662b44 | 1374 | struct ieee80211_tx_info *info; |
55de908a | 1375 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1376 | |
41cbb0f5 LC |
1377 | /* Don't send NDPs when STA is connected HE */ |
1378 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1379 | !(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE)) | |
1380 | return; | |
1381 | ||
ce662b44 JB |
1382 | if (qos) { |
1383 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1384 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1385 | IEEE80211_FCTL_FROMDS); | |
1386 | } else { | |
1387 | size -= 2; | |
1388 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1389 | IEEE80211_STYPE_NULLFUNC | | |
1390 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1391 | } |
af818581 | 1392 | |
ce662b44 JB |
1393 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1394 | if (!skb) | |
1395 | return; | |
1396 | ||
1397 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1398 | ||
4df864c1 | 1399 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1400 | nullfunc->frame_control = fc; |
1401 | nullfunc->duration_id = 0; | |
1402 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1403 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1404 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1405 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1406 | |
59b66255 JB |
1407 | skb->priority = tid; |
1408 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1409 | if (qos) { |
ce662b44 JB |
1410 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1411 | ||
0ead2510 | 1412 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1413 | nullfunc->qos_ctrl |= |
1414 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1415 | if (more_data) |
1416 | nullfunc->frame_control |= | |
1417 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1418 | } | |
ce662b44 JB |
1419 | } |
1420 | ||
1421 | info = IEEE80211_SKB_CB(skb); | |
1422 | ||
1423 | /* | |
1424 | * Tell TX path to send this frame even though the | |
1425 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1426 | * exchange. Also set EOSP to indicate this packet |
1427 | * ends the poll/service period. | |
ce662b44 | 1428 | */ |
02f2f1a9 | 1429 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1430 | IEEE80211_TX_STATUS_EOSP | |
1431 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1432 | |
6b127c71 SM |
1433 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1434 | ||
b77cf4f8 JB |
1435 | if (call_driver) |
1436 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1437 | reason, false); | |
40b96408 | 1438 | |
89afe614 JB |
1439 | skb->dev = sdata->dev; |
1440 | ||
55de908a JB |
1441 | rcu_read_lock(); |
1442 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1443 | if (WARN_ON(!chanctx_conf)) { | |
1444 | rcu_read_unlock(); | |
1445 | kfree_skb(skb); | |
1446 | return; | |
1447 | } | |
1448 | ||
73c4e195 | 1449 | info->band = chanctx_conf->def.chan->band; |
b9771d41 | 1450 | ieee80211_xmit(sdata, sta, skb, 0); |
55de908a | 1451 | rcu_read_unlock(); |
ce662b44 JB |
1452 | } |
1453 | ||
0a1cb809 JB |
1454 | static int find_highest_prio_tid(unsigned long tids) |
1455 | { | |
1456 | /* lower 3 TIDs aren't ordered perfectly */ | |
1457 | if (tids & 0xF8) | |
1458 | return fls(tids) - 1; | |
1459 | /* TID 0 is BE just like TID 3 */ | |
1460 | if (tids & BIT(0)) | |
1461 | return 0; | |
1462 | return fls(tids) - 1; | |
1463 | } | |
1464 | ||
0ead2510 EG |
1465 | /* Indicates if the MORE_DATA bit should be set in the last |
1466 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1467 | * Note that driver_release_tids is relevant only if | |
1468 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1469 | */ | |
1470 | static bool | |
1471 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1472 | enum ieee80211_frame_release_type reason, | |
1473 | unsigned long driver_release_tids) | |
1474 | { | |
1475 | int ac; | |
1476 | ||
1477 | /* If the driver has data on more than one TID then | |
1478 | * certainly there's more data if we release just a | |
1479 | * single frame now (from a single TID). This will | |
1480 | * only happen for PS-Poll. | |
1481 | */ | |
1482 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1483 | hweight16(driver_release_tids) > 1) | |
1484 | return true; | |
1485 | ||
1486 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1487 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1488 | continue; |
1489 | ||
1490 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1491 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1492 | return true; | |
1493 | } | |
1494 | ||
1495 | return false; | |
1496 | } | |
1497 | ||
47086fc5 | 1498 | static void |
0ead2510 EG |
1499 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1500 | enum ieee80211_frame_release_type reason, | |
1501 | struct sk_buff_head *frames, | |
1502 | unsigned long *driver_release_tids) | |
af818581 JB |
1503 | { |
1504 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1505 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1506 | int ac; |
948d887d | 1507 | |
f9f760b4 | 1508 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1509 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1510 | unsigned long tids; |
1511 | ||
f438ceb8 | 1512 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1513 | continue; |
1514 | ||
4049e09a JB |
1515 | tids = ieee80211_tids_for_ac(ac); |
1516 | ||
f9f760b4 JB |
1517 | /* if we already have frames from software, then we can't also |
1518 | * release from hardware queues | |
1519 | */ | |
0ead2510 EG |
1520 | if (skb_queue_empty(frames)) { |
1521 | *driver_release_tids |= | |
1522 | sta->driver_buffered_tids & tids; | |
1523 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1524 | } |
948d887d | 1525 | |
0ead2510 | 1526 | if (!*driver_release_tids) { |
f9f760b4 JB |
1527 | struct sk_buff *skb; |
1528 | ||
1529 | while (n_frames > 0) { | |
1530 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1531 | if (!skb) { | |
1532 | skb = skb_dequeue( | |
1533 | &sta->ps_tx_buf[ac]); | |
1534 | if (skb) | |
1535 | local->total_ps_buffered--; | |
1536 | } | |
1537 | if (!skb) | |
1538 | break; | |
1539 | n_frames--; | |
0ead2510 | 1540 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1541 | } |
4049e09a | 1542 | } |
948d887d | 1543 | |
0ead2510 EG |
1544 | /* If we have more frames buffered on this AC, then abort the |
1545 | * loop since we can't send more data from other ACs before | |
1546 | * the buffered frames from this. | |
f9f760b4 | 1547 | */ |
948d887d | 1548 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1549 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1550 | break; |
af818581 | 1551 | } |
0ead2510 EG |
1552 | } |
1553 | ||
1554 | static void | |
1555 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1556 | int n_frames, u8 ignored_acs, | |
1557 | enum ieee80211_frame_release_type reason) | |
1558 | { | |
1559 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1560 | struct ieee80211_local *local = sdata->local; | |
1561 | unsigned long driver_release_tids = 0; | |
1562 | struct sk_buff_head frames; | |
1563 | bool more_data; | |
1564 | ||
1565 | /* Service or PS-Poll period starts */ | |
1566 | set_sta_flag(sta, WLAN_STA_SP); | |
1567 | ||
1568 | __skb_queue_head_init(&frames); | |
1569 | ||
1570 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1571 | &frames, &driver_release_tids); | |
1572 | ||
1573 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1574 | ||
1a57081a | 1575 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1576 | driver_release_tids = |
1577 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1578 | |
f9f760b4 | 1579 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1580 | int tid, ac; |
af818581 JB |
1581 | |
1582 | /* | |
ce662b44 JB |
1583 | * For PS-Poll, this can only happen due to a race condition |
1584 | * when we set the TIM bit and the station notices it, but | |
1585 | * before it can poll for the frame we expire it. | |
1586 | * | |
1587 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1588 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1589 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1590 | * more than the value specified in the Max SP Length field | |
1591 | * in the QoS Capability element from delivery-enabled ACs, | |
1592 | * that are destined for the non-AP STA. | |
1593 | * | |
1594 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1595 | */ |
af818581 | 1596 | |
ce662b44 | 1597 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1598 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1599 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1600 | break; | |
f438ceb8 | 1601 | tid = 7 - 2 * ac; |
af818581 | 1602 | |
0ead2510 | 1603 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1604 | } else if (!driver_release_tids) { |
47086fc5 JB |
1605 | struct sk_buff_head pending; |
1606 | struct sk_buff *skb; | |
40b96408 JB |
1607 | int num = 0; |
1608 | u16 tids = 0; | |
b77cf4f8 | 1609 | bool need_null = false; |
af818581 | 1610 | |
47086fc5 | 1611 | skb_queue_head_init(&pending); |
af818581 | 1612 | |
47086fc5 JB |
1613 | while ((skb = __skb_dequeue(&frames))) { |
1614 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1615 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1616 | u8 *qoshdr = NULL; |
1617 | ||
1618 | num++; | |
af818581 | 1619 | |
47086fc5 JB |
1620 | /* |
1621 | * Tell TX path to send this frame even though the | |
1622 | * STA may still remain is PS mode after this frame | |
1623 | * exchange. | |
1624 | */ | |
6b127c71 SM |
1625 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1626 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1627 | |
1628 | /* | |
1629 | * Use MoreData flag to indicate whether there are | |
1630 | * more buffered frames for this STA | |
1631 | */ | |
24b9c373 | 1632 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1633 | hdr->frame_control |= |
1634 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1635 | else |
1636 | hdr->frame_control &= | |
1637 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1638 | |
40b96408 JB |
1639 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1640 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1641 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1642 | ||
b77cf4f8 | 1643 | tids |= BIT(skb->priority); |
52a3f20c | 1644 | |
b77cf4f8 JB |
1645 | __skb_queue_tail(&pending, skb); |
1646 | ||
1647 | /* end service period after last frame or add one */ | |
1648 | if (!skb_queue_empty(&frames)) | |
1649 | continue; | |
1650 | ||
1651 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1652 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1653 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1654 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1655 | break; |
52a3f20c | 1656 | } |
deeaee19 | 1657 | |
b77cf4f8 JB |
1658 | /* For uAPSD, things are a bit more complicated. If the |
1659 | * last frame has a QoS header (i.e. is a QoS-data or | |
1660 | * QoS-nulldata frame) then just set the EOSP bit there | |
1661 | * and be done. | |
1662 | * If the frame doesn't have a QoS header (which means | |
1663 | * it should be a bufferable MMPDU) then we can't set | |
1664 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1665 | * frame to the list to send it after the MMPDU. | |
1666 | * | |
1667 | * Note that this code is only in the mac80211-release | |
1668 | * code path, we assume that the driver will not buffer | |
1669 | * anything but QoS-data frames, or if it does, will | |
1670 | * create the QoS-nulldata frame by itself if needed. | |
1671 | * | |
1672 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1673 | */ | |
1674 | if (qoshdr) { | |
1675 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1676 | |
b77cf4f8 JB |
1677 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1678 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1679 | } else { | |
1680 | /* The standard isn't completely clear on this | |
1681 | * as it says the more-data bit should be set | |
1682 | * if there are more BUs. The QoS-Null frame | |
1683 | * we're about to send isn't buffered yet, we | |
1684 | * only create it below, but let's pretend it | |
1685 | * was buffered just in case some clients only | |
1686 | * expect more-data=0 when eosp=1. | |
1687 | */ | |
1688 | hdr->frame_control |= | |
1689 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1690 | need_null = true; | |
1691 | num++; | |
1692 | } | |
1693 | break; | |
47086fc5 | 1694 | } |
af818581 | 1695 | |
40b96408 JB |
1696 | drv_allow_buffered_frames(local, sta, tids, num, |
1697 | reason, more_data); | |
1698 | ||
47086fc5 | 1699 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1700 | |
b77cf4f8 JB |
1701 | if (need_null) |
1702 | ieee80211_send_null_response( | |
0ead2510 EG |
1703 | sta, find_highest_prio_tid(tids), |
1704 | reason, false, false); | |
b77cf4f8 | 1705 | |
c868cb35 | 1706 | sta_info_recalc_tim(sta); |
af818581 | 1707 | } else { |
ba8c3d6f FF |
1708 | int tid; |
1709 | ||
af818581 | 1710 | /* |
4049e09a JB |
1711 | * We need to release a frame that is buffered somewhere in the |
1712 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1713 | * Note that the driver also has to check the number of frames |
1714 | * on the TIDs we're releasing from - if there are more than | |
1715 | * n_frames it has to set the more-data bit (if we didn't ask | |
1716 | * it to set it anyway due to other buffered frames); if there | |
1717 | * are fewer than n_frames it has to make sure to adjust that | |
1718 | * to allow the service period to end properly. | |
4049e09a JB |
1719 | */ |
1720 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1721 | n_frames, reason, more_data); |
4049e09a JB |
1722 | |
1723 | /* | |
1724 | * Note that we don't recalculate the TIM bit here as it would | |
1725 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1726 | * that the TID(s) became empty before returning here from the |
4049e09a | 1727 | * release function. |
f9f760b4 | 1728 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1729 | * became empty or we find that a txq became empty, we'll do the |
1730 | * TIM recalculation. | |
af818581 | 1731 | */ |
ba8c3d6f FF |
1732 | |
1733 | if (!sta->sta.txq[0]) | |
1734 | return; | |
1735 | ||
1736 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
adf8ed01 JB |
1737 | if (!sta->sta.txq[tid] || |
1738 | !(driver_release_tids & BIT(tid)) || | |
1e1430d5 | 1739 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1740 | continue; |
1741 | ||
1742 | sta_info_recalc_tim(sta); | |
1743 | break; | |
1744 | } | |
af818581 JB |
1745 | } |
1746 | } | |
1747 | ||
47086fc5 JB |
1748 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1749 | { | |
1750 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1751 | ||
1752 | /* | |
1753 | * If all ACs are delivery-enabled then we should reply | |
1754 | * from any of them, if only some are enabled we reply | |
1755 | * only from the non-enabled ones. | |
1756 | */ | |
1757 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1758 | ignore_for_response = 0; | |
1759 | ||
1760 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1761 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1762 | } | |
1763 | ||
1764 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1765 | { | |
1766 | int n_frames = sta->sta.max_sp; | |
1767 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1768 | ||
1769 | /* | |
1770 | * If we ever grow support for TSPEC this might happen if | |
1771 | * the TSPEC update from hostapd comes in between a trigger | |
1772 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1773 | * actually getting called. | |
1774 | */ | |
1775 | if (!delivery_enabled) | |
1776 | return; | |
1777 | ||
47086fc5 JB |
1778 | switch (sta->sta.max_sp) { |
1779 | case 1: | |
1780 | n_frames = 2; | |
1781 | break; | |
1782 | case 2: | |
1783 | n_frames = 4; | |
1784 | break; | |
1785 | case 3: | |
1786 | n_frames = 6; | |
1787 | break; | |
1788 | case 0: | |
1789 | /* XXX: what is a good value? */ | |
13a8098a | 1790 | n_frames = 128; |
47086fc5 JB |
1791 | break; |
1792 | } | |
1793 | ||
1794 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1795 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1796 | } | |
1797 | ||
af818581 JB |
1798 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1799 | struct ieee80211_sta *pubsta, bool block) | |
1800 | { | |
1801 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1802 | ||
b5878a2d JB |
1803 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1804 | ||
5ac2e350 | 1805 | if (block) { |
c2c98fde | 1806 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1807 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1808 | return; |
1809 | } | |
1810 | ||
1811 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1812 | return; | |
1813 | ||
1814 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1815 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1816 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1817 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1818 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1819 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1820 | /* must be asleep in this case */ | |
1821 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1822 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1823 | } else { | |
1824 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1825 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1826 | } |
af818581 JB |
1827 | } |
1828 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1829 | |
e943789e | 1830 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1831 | { |
1832 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1833 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1834 | |
1835 | trace_api_eosp(local, pubsta); | |
1836 | ||
e943789e | 1837 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1838 | } |
e943789e | 1839 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1840 | |
0ead2510 EG |
1841 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1842 | { | |
1843 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1844 | enum ieee80211_frame_release_type reason; | |
1845 | bool more_data; | |
1846 | ||
1847 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1848 | ||
1849 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1850 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1851 | reason, 0); | |
1852 | ||
1853 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1854 | } | |
1855 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1856 | ||
042ec453 JB |
1857 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1858 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1859 | { |
1860 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1861 | ||
5a306f58 | 1862 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1863 | return; |
1864 | ||
1b000789 JB |
1865 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1866 | ||
948d887d JB |
1867 | if (buffered) |
1868 | set_bit(tid, &sta->driver_buffered_tids); | |
1869 | else | |
1870 | clear_bit(tid, &sta->driver_buffered_tids); | |
1871 | ||
c868cb35 | 1872 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1873 | } |
042ec453 | 1874 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1875 | |
b4809e94 THJ |
1876 | void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, |
1877 | u32 tx_airtime, u32 rx_airtime) | |
1878 | { | |
1879 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1880 | struct ieee80211_local *local = sta->sdata->local; | |
1881 | u8 ac = ieee80211_ac_from_tid(tid); | |
1882 | u32 airtime = 0; | |
1883 | ||
1884 | if (sta->local->airtime_flags & AIRTIME_USE_TX) | |
1885 | airtime += tx_airtime; | |
1886 | if (sta->local->airtime_flags & AIRTIME_USE_RX) | |
1887 | airtime += rx_airtime; | |
1888 | ||
1889 | spin_lock_bh(&local->active_txq_lock[ac]); | |
1890 | sta->airtime[ac].tx_airtime += tx_airtime; | |
1891 | sta->airtime[ac].rx_airtime += rx_airtime; | |
1892 | sta->airtime[ac].deficit -= airtime; | |
1893 | spin_unlock_bh(&local->active_txq_lock[ac]); | |
1894 | } | |
1895 | EXPORT_SYMBOL(ieee80211_sta_register_airtime); | |
1896 | ||
83d5cc01 JB |
1897 | int sta_info_move_state(struct sta_info *sta, |
1898 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1899 | { |
8bf11d8d | 1900 | might_sleep(); |
d9a7ddb0 JB |
1901 | |
1902 | if (sta->sta_state == new_state) | |
1903 | return 0; | |
1904 | ||
f09603a2 JB |
1905 | /* check allowed transitions first */ |
1906 | ||
1907 | switch (new_state) { | |
1908 | case IEEE80211_STA_NONE: | |
1909 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1910 | return -EINVAL; | |
1911 | break; | |
1912 | case IEEE80211_STA_AUTH: | |
1913 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1914 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1915 | return -EINVAL; | |
1916 | break; | |
1917 | case IEEE80211_STA_ASSOC: | |
1918 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1919 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1920 | return -EINVAL; | |
1921 | break; | |
1922 | case IEEE80211_STA_AUTHORIZED: | |
1923 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1924 | return -EINVAL; | |
1925 | break; | |
1926 | default: | |
1927 | WARN(1, "invalid state %d", new_state); | |
1928 | return -EINVAL; | |
1929 | } | |
1930 | ||
bdcbd8e0 JB |
1931 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1932 | sta->sta.addr, new_state); | |
f09603a2 JB |
1933 | |
1934 | /* | |
1935 | * notify the driver before the actual changes so it can | |
1936 | * fail the transition | |
1937 | */ | |
1938 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1939 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1940 | sta->sta_state, new_state); | |
1941 | if (err) | |
1942 | return err; | |
1943 | } | |
1944 | ||
1945 | /* reflect the change in all state variables */ | |
1946 | ||
d9a7ddb0 JB |
1947 | switch (new_state) { |
1948 | case IEEE80211_STA_NONE: | |
1949 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1950 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1951 | break; |
1952 | case IEEE80211_STA_AUTH: | |
a7201a6c | 1953 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 1954 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 1955 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 1956 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1957 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1958 | if (!sta->sta.support_p2p_ps) |
1959 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 1960 | } |
d9a7ddb0 JB |
1961 | break; |
1962 | case IEEE80211_STA_ASSOC: | |
29623892 | 1963 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1964 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1965 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1966 | if (!sta->sta.support_p2p_ps) |
1967 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 1968 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 1969 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 1970 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1971 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 1972 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 1973 | } |
d9a7ddb0 JB |
1974 | break; |
1975 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1976 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 1977 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 1978 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1979 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 1980 | ieee80211_check_fast_rx(sta); |
f09603a2 | 1981 | } |
d9a7ddb0 JB |
1982 | break; |
1983 | default: | |
f09603a2 | 1984 | break; |
d9a7ddb0 JB |
1985 | } |
1986 | ||
d9a7ddb0 JB |
1987 | sta->sta_state = new_state; |
1988 | ||
1989 | return 0; | |
1990 | } | |
687da132 EG |
1991 | |
1992 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1993 | { | |
1994 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1995 | u8 rx_streams; | |
1996 | ||
1997 | if (!sta->sta.ht_cap.ht_supported) | |
1998 | return 1; | |
1999 | ||
2000 | if (sta->sta.vht_cap.vht_supported) { | |
2001 | int i; | |
2002 | u16 tx_mcs_map = | |
2003 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
2004 | ||
2005 | for (i = 7; i >= 0; i--) | |
2006 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
2007 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
2008 | return i + 1; | |
2009 | } | |
2010 | ||
2011 | if (ht_cap->mcs.rx_mask[3]) | |
2012 | rx_streams = 4; | |
2013 | else if (ht_cap->mcs.rx_mask[2]) | |
2014 | rx_streams = 3; | |
2015 | else if (ht_cap->mcs.rx_mask[1]) | |
2016 | rx_streams = 2; | |
2017 | else | |
2018 | rx_streams = 1; | |
2019 | ||
2020 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
2021 | return rx_streams; | |
2022 | ||
2023 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
2024 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
2025 | } | |
b7ffbd7e | 2026 | |
c9c5962b JB |
2027 | static struct ieee80211_sta_rx_stats * |
2028 | sta_get_last_rx_stats(struct sta_info *sta) | |
2029 | { | |
2030 | struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; | |
2031 | struct ieee80211_local *local = sta->local; | |
2032 | int cpu; | |
2033 | ||
2034 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) | |
2035 | return stats; | |
2036 | ||
2037 | for_each_possible_cpu(cpu) { | |
2038 | struct ieee80211_sta_rx_stats *cpustats; | |
2039 | ||
2040 | cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2041 | ||
2042 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
2043 | stats = cpustats; | |
2044 | } | |
2045 | ||
2046 | return stats; | |
2047 | } | |
2048 | ||
41cbb0f5 | 2049 | static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, |
4f6b1b3d | 2050 | struct rate_info *rinfo) |
fbd6ff5c | 2051 | { |
dcba665b | 2052 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 2053 | |
dcba665b | 2054 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 2055 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 2056 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
2057 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
2058 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
2059 | if (STA_STATS_GET(SGI, rate)) | |
2060 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2061 | break; |
2062 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 2063 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
2064 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
2065 | if (STA_STATS_GET(SGI, rate)) | |
2066 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
2067 | break; |
2068 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 2069 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 2070 | u16 brate; |
4f6b1b3d | 2071 | unsigned int shift; |
dcba665b JB |
2072 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
2073 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 2074 | |
dcba665b JB |
2075 | sband = local->hw.wiphy->bands[band]; |
2076 | brate = sband->bitrates[rate_idx].bitrate; | |
4f6b1b3d JB |
2077 | if (rinfo->bw == RATE_INFO_BW_5) |
2078 | shift = 2; | |
2079 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2080 | shift = 1; | |
2081 | else | |
2082 | shift = 0; | |
fbd6ff5c | 2083 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2084 | break; |
2085 | } | |
41cbb0f5 LC |
2086 | case STA_STATS_RATE_TYPE_HE: |
2087 | rinfo->flags = RATE_INFO_FLAGS_HE_MCS; | |
2088 | rinfo->mcs = STA_STATS_GET(HE_MCS, rate); | |
2089 | rinfo->nss = STA_STATS_GET(HE_NSS, rate); | |
2090 | rinfo->he_gi = STA_STATS_GET(HE_GI, rate); | |
2091 | rinfo->he_ru_alloc = STA_STATS_GET(HE_RU, rate); | |
2092 | rinfo->he_dcm = STA_STATS_GET(HE_DCM, rate); | |
2093 | break; | |
fbd6ff5c | 2094 | } |
4f6b1b3d JB |
2095 | } |
2096 | ||
a17d93ff | 2097 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2098 | { |
6aa7de05 | 2099 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2100 | |
4f6b1b3d | 2101 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2102 | return -EINVAL; |
2103 | ||
2104 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2105 | return 0; | |
fbd6ff5c JB |
2106 | } |
2107 | ||
0f9c5a61 JB |
2108 | static void sta_set_tidstats(struct sta_info *sta, |
2109 | struct cfg80211_tid_stats *tidstats, | |
2110 | int tid) | |
2111 | { | |
2112 | struct ieee80211_local *local = sta->local; | |
2113 | ||
2114 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
2115 | unsigned int start; | |
2116 | ||
2117 | do { | |
2118 | start = u64_stats_fetch_begin(&sta->rx_stats.syncp); | |
2119 | tidstats->rx_msdu = sta->rx_stats.msdu[tid]; | |
2120 | } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start)); | |
2121 | ||
2122 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2123 | } | |
2124 | ||
2125 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2126 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
2127 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; | |
2128 | } | |
2129 | ||
2130 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2131 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2132 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
2133 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; | |
2134 | } | |
2135 | ||
2136 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2137 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2138 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
2139 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; | |
2140 | } | |
2fe4a29a THJ |
2141 | |
2142 | if (local->ops->wake_tx_queue && tid < IEEE80211_NUM_TIDS) { | |
2143 | spin_lock_bh(&local->fq.lock); | |
2144 | rcu_read_lock(); | |
2145 | ||
2146 | tidstats->filled |= BIT(NL80211_TID_STATS_TXQ_STATS); | |
2147 | ieee80211_fill_txq_stats(&tidstats->txq_stats, | |
2148 | to_txq_info(sta->sta.txq[tid])); | |
2149 | ||
2150 | rcu_read_unlock(); | |
2151 | spin_unlock_bh(&local->fq.lock); | |
2152 | } | |
0f9c5a61 JB |
2153 | } |
2154 | ||
c9c5962b JB |
2155 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2156 | { | |
2157 | unsigned int start; | |
2158 | u64 value; | |
2159 | ||
2160 | do { | |
2161 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2162 | value = rxstats->bytes; | |
2163 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2164 | ||
2165 | return value; | |
2166 | } | |
2167 | ||
0fdf1493 JB |
2168 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
2169 | bool tidstats) | |
b7ffbd7e JB |
2170 | { |
2171 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2172 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2173 | u32 thr = 0; |
c9c5962b JB |
2174 | int i, ac, cpu; |
2175 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2176 | ||
2177 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2178 | |
2179 | sinfo->generation = sdata->local->sta_generation; | |
2180 | ||
225b8189 JB |
2181 | /* do before driver, so beacon filtering drivers have a |
2182 | * chance to e.g. just add the number of filtered beacons | |
2183 | * (or just modify the value entirely, of course) | |
2184 | */ | |
2185 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2186 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
2187 | ||
2b9a7e1b JB |
2188 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
2189 | ||
a4217750 OE |
2190 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_INACTIVE_TIME) | |
2191 | BIT_ULL(NL80211_STA_INFO_STA_FLAGS) | | |
2192 | BIT_ULL(NL80211_STA_INFO_BSS_PARAM) | | |
2193 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) | | |
2194 | BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC); | |
976bd9ef JB |
2195 | |
2196 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
2197 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
a4217750 | 2198 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_LOSS); |
976bd9ef | 2199 | } |
b7ffbd7e | 2200 | |
84b00607 | 2201 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
e5a9f8d0 | 2202 | sinfo->inactive_time = |
b8da6b6a | 2203 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2204 | |
a4217750 OE |
2205 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES64) | |
2206 | BIT_ULL(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2207 | sinfo->tx_bytes = 0; |
2208 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2209 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
a4217750 | 2210 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2211 | } |
2212 | ||
a4217750 | 2213 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2214 | sinfo->tx_packets = 0; |
2215 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2216 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
a4217750 | 2217 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2218 | } |
2219 | ||
a4217750 OE |
2220 | if (!(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES64) | |
2221 | BIT_ULL(NL80211_STA_INFO_RX_BYTES)))) { | |
c9c5962b JB |
2222 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
2223 | ||
2224 | if (sta->pcpu_rx_stats) { | |
2225 | for_each_possible_cpu(cpu) { | |
2226 | struct ieee80211_sta_rx_stats *cpurxs; | |
2227 | ||
2228 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2229 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); | |
2230 | } | |
2231 | } | |
0f9c5a61 | 2232 | |
a4217750 | 2233 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2234 | } |
2235 | ||
a4217750 | 2236 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 2237 | sinfo->rx_packets = sta->rx_stats.packets; |
c9c5962b JB |
2238 | if (sta->pcpu_rx_stats) { |
2239 | for_each_possible_cpu(cpu) { | |
2240 | struct ieee80211_sta_rx_stats *cpurxs; | |
2241 | ||
2242 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2243 | sinfo->rx_packets += cpurxs->packets; | |
2244 | } | |
2245 | } | |
a4217750 | 2246 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2247 | } |
2248 | ||
a4217750 | 2249 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 2250 | sinfo->tx_retries = sta->status_stats.retry_count; |
a4217750 | 2251 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2252 | } |
2253 | ||
a4217750 | 2254 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 2255 | sinfo->tx_failed = sta->status_stats.retry_failed; |
a4217750 | 2256 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2257 | } |
2b9a7e1b | 2258 | |
b4809e94 THJ |
2259 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_DURATION))) { |
2260 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2261 | sinfo->rx_duration += sta->airtime[ac].rx_airtime; | |
2262 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_DURATION); | |
2263 | } | |
2264 | ||
2265 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_DURATION))) { | |
2266 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
2267 | sinfo->tx_duration += sta->airtime[ac].tx_airtime; | |
2268 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_DURATION); | |
2269 | } | |
2270 | ||
2271 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT))) { | |
2272 | sinfo->airtime_weight = sta->airtime_weight; | |
2273 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_WEIGHT); | |
2274 | } | |
2275 | ||
e5a9f8d0 | 2276 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
c9c5962b JB |
2277 | if (sta->pcpu_rx_stats) { |
2278 | for_each_possible_cpu(cpu) { | |
2279 | struct ieee80211_sta_rx_stats *cpurxs; | |
2280 | ||
2281 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
e165bc02 | 2282 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2283 | } |
2284 | } | |
b7ffbd7e | 2285 | |
225b8189 JB |
2286 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2287 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
a4217750 OE |
2288 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX) | |
2289 | BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
225b8189 JB |
2290 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); |
2291 | } | |
2292 | ||
30686bf7 JB |
2293 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2294 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
a4217750 | 2295 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2296 | sinfo->signal = (s8)last_rxstats->last_signal; |
a4217750 | 2297 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2298 | } |
2299 | ||
c9c5962b | 2300 | if (!sta->pcpu_rx_stats && |
a4217750 | 2301 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 2302 | sinfo->signal_avg = |
0be6ed13 | 2303 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
a4217750 | 2304 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2305 | } |
b7ffbd7e | 2306 | } |
2b9a7e1b | 2307 | |
c9c5962b JB |
2308 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2309 | * the sta->rx_stats struct, so the check here is fine with and without | |
2310 | * pcpu statistics | |
2311 | */ | |
2312 | if (last_rxstats->chains && | |
a4217750 OE |
2313 | !(sinfo->filled & (BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2314 | BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
2315 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); | |
c9c5962b | 2316 | if (!sta->pcpu_rx_stats) |
a4217750 | 2317 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); |
c9c5962b JB |
2318 | |
2319 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2320 | |
b7ffbd7e | 2321 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2322 | sinfo->chain_signal[i] = |
c9c5962b | 2323 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2324 | sinfo->chain_signal_avg[i] = |
0be6ed13 | 2325 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2326 | } |
2327 | } | |
2328 | ||
a4217750 | 2329 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
2330 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
2331 | &sinfo->txrate); | |
a4217750 | 2332 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2333 | } |
2334 | ||
a4217750 | 2335 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))) { |
a17d93ff | 2336 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
a4217750 | 2337 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2338 | } |
b7ffbd7e | 2339 | |
0fdf1493 | 2340 | if (tidstats && !cfg80211_sinfo_alloc_tid_stats(sinfo, GFP_KERNEL)) { |
6af8354f JB |
2341 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) |
2342 | sta_set_tidstats(sta, &sinfo->pertid[i], i); | |
79c892b8 JB |
2343 | } |
2344 | ||
b7ffbd7e JB |
2345 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2346 | #ifdef CONFIG_MAC80211_MESH | |
a4217750 OE |
2347 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_LLID) | |
2348 | BIT_ULL(NL80211_STA_INFO_PLID) | | |
2349 | BIT_ULL(NL80211_STA_INFO_PLINK_STATE) | | |
2350 | BIT_ULL(NL80211_STA_INFO_LOCAL_PM) | | |
2351 | BIT_ULL(NL80211_STA_INFO_PEER_PM) | | |
dbdaee7a BC |
2352 | BIT_ULL(NL80211_STA_INFO_NONPEER_PM) | |
2353 | BIT_ULL(NL80211_STA_INFO_CONNECTED_TO_GATE); | |
b7ffbd7e | 2354 | |
433f5bc1 JB |
2355 | sinfo->llid = sta->mesh->llid; |
2356 | sinfo->plid = sta->mesh->plid; | |
2357 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2358 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
a4217750 | 2359 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2360 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2361 | } |
433f5bc1 JB |
2362 | sinfo->local_pm = sta->mesh->local_pm; |
2363 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2364 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
dbdaee7a | 2365 | sinfo->connected_to_gate = sta->mesh->connected_to_gate; |
b7ffbd7e JB |
2366 | #endif |
2367 | } | |
2368 | ||
2369 | sinfo->bss_param.flags = 0; | |
2370 | if (sdata->vif.bss_conf.use_cts_prot) | |
2371 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2372 | if (sdata->vif.bss_conf.use_short_preamble) | |
2373 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2374 | if (sdata->vif.bss_conf.use_short_slot) | |
2375 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2376 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2377 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2378 | ||
2379 | sinfo->sta_flags.set = 0; | |
2380 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2381 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2382 | BIT(NL80211_STA_FLAG_WME) | | |
2383 | BIT(NL80211_STA_FLAG_MFP) | | |
2384 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2385 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2386 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2387 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2388 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2389 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2390 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2391 | if (sta->sta.wme) |
b7ffbd7e JB |
2392 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2393 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2394 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2395 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2396 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2397 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2398 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2399 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2400 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2401 | ||
3b17fbf8 MA |
2402 | thr = sta_get_expected_throughput(sta); |
2403 | ||
2404 | if (thr != 0) { | |
a4217750 | 2405 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
3b17fbf8 MA |
2406 | sinfo->expected_throughput = thr; |
2407 | } | |
a78b26ff VN |
2408 | |
2409 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
2410 | sta->status_stats.ack_signal_filled) { | |
2411 | sinfo->ack_signal = sta->status_stats.last_ack_signal; | |
2412 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); | |
2413 | } | |
cc60dbbf | 2414 | |
9c06602b BP |
2415 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG)) && |
2416 | sta->status_stats.ack_signal_filled) { | |
cc60dbbf BP |
2417 | sinfo->avg_ack_signal = |
2418 | -(s8)ewma_avg_signal_read( | |
2419 | &sta->status_stats.avg_ack_signal); | |
2420 | sinfo->filled |= | |
9c06602b | 2421 | BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL_AVG); |
cc60dbbf | 2422 | } |
ab60633c NM |
2423 | |
2424 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2425 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_AIRTIME_LINK_METRIC); | |
2426 | sinfo->airtime_link_metric = | |
2427 | airtime_link_metric_get(local, sta); | |
2428 | } | |
3b17fbf8 MA |
2429 | } |
2430 | ||
2431 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2432 | { | |
2433 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2434 | struct ieee80211_local *local = sdata->local; | |
2435 | struct rate_control_ref *ref = NULL; | |
2436 | u32 thr = 0; | |
2437 | ||
2438 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2439 | ref = local->rate_ctrl; | |
2440 | ||
b7ffbd7e JB |
2441 | /* check if the driver has a SW RC implementation */ |
2442 | if (ref && ref->ops->get_expected_throughput) | |
2443 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2444 | else | |
4fdbc67a | 2445 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2446 | |
3b17fbf8 | 2447 | return thr; |
b7ffbd7e | 2448 | } |
b8da6b6a JB |
2449 | |
2450 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2451 | { | |
c9c5962b JB |
2452 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2453 | ||
2454 | if (time_after(stats->last_rx, sta->status_stats.last_ack)) | |
2455 | return stats->last_rx; | |
b8da6b6a JB |
2456 | return sta->status_stats.last_ack; |
2457 | } | |
484a54c2 THJ |
2458 | |
2459 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2460 | { | |
2461 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2462 | return; | |
2463 | ||
2464 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2465 | sta->cparams.target = MS2TIME(50); | |
2466 | sta->cparams.interval = MS2TIME(300); | |
2467 | sta->cparams.ecn = false; | |
2468 | } else { | |
2469 | sta->cparams.target = MS2TIME(20); | |
2470 | sta->cparams.interval = MS2TIME(100); | |
2471 | sta->cparams.ecn = true; | |
2472 | } | |
2473 | } | |
2474 | ||
2475 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2476 | u32 thr) | |
2477 | { | |
2478 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2479 | ||
2480 | sta_update_codel_params(sta, thr); | |
2481 | } |