Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
d98ad83e | 4 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
dcba665b | 5 | * Copyright (C) 2015 - 2017 Intel Deutschland GmbH |
a403f3bf | 6 | * Copyright (C) 2018 Intel Corporation |
f0706e82 JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
888d04df | 15 | #include <linux/etherdevice.h> |
f0706e82 JB |
16 | #include <linux/netdevice.h> |
17 | #include <linux/types.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/if_arp.h> | |
0d174406 | 21 | #include <linux/timer.h> |
d0709a65 | 22 | #include <linux/rtnetlink.h> |
f0706e82 | 23 | |
484a54c2 | 24 | #include <net/codel.h> |
f0706e82 JB |
25 | #include <net/mac80211.h> |
26 | #include "ieee80211_i.h" | |
24487981 | 27 | #include "driver-ops.h" |
2c8dccc7 | 28 | #include "rate.h" |
f0706e82 | 29 | #include "sta_info.h" |
e9f207f0 | 30 | #include "debugfs_sta.h" |
ee385855 | 31 | #include "mesh.h" |
ce662b44 | 32 | #include "wme.h" |
f0706e82 | 33 | |
d0709a65 JB |
34 | /** |
35 | * DOC: STA information lifetime rules | |
36 | * | |
37 | * STA info structures (&struct sta_info) are managed in a hash table | |
38 | * for faster lookup and a list for iteration. They are managed using | |
39 | * RCU, i.e. access to the list and hash table is protected by RCU. | |
40 | * | |
34e89507 JB |
41 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
42 | * owns that structure. It must then insert it into the hash table using | |
43 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter | |
44 | * case (which acquires an rcu read section but must not be called from | |
45 | * within one) will the pointer still be valid after the call. Note that | |
46 | * the caller may not do much with the STA info before inserting it, in | |
47 | * particular, it may not start any mesh peer link management or add | |
48 | * encryption keys. | |
93e5deb1 JB |
49 | * |
50 | * When the insertion fails (sta_info_insert()) returns non-zero), the | |
51 | * structure will have been freed by sta_info_insert()! | |
d0709a65 | 52 | * |
34e89507 | 53 | * Station entries are added by mac80211 when you establish a link with a |
7e189a12 LR |
54 | * peer. This means different things for the different type of interfaces |
55 | * we support. For a regular station this mean we add the AP sta when we | |
25985edc | 56 | * receive an association response from the AP. For IBSS this occurs when |
34e89507 | 57 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
25985edc | 58 | * the peer immediately upon device open. When using AP mode we add stations |
34e89507 | 59 | * for each respective station upon request from userspace through nl80211. |
7e189a12 | 60 | * |
34e89507 JB |
61 | * In order to remove a STA info structure, various sta_info_destroy_*() |
62 | * calls are available. | |
d0709a65 | 63 | * |
34e89507 JB |
64 | * There is no concept of ownership on a STA entry, each structure is |
65 | * owned by the global hash table/list until it is removed. All users of | |
66 | * the structure need to be RCU protected so that the structure won't be | |
67 | * freed before they are done using it. | |
d0709a65 | 68 | */ |
f0706e82 | 69 | |
7bedd0cf JB |
70 | static const struct rhashtable_params sta_rht_params = { |
71 | .nelem_hint = 3, /* start small */ | |
caf22d31 | 72 | .automatic_shrinking = true, |
7bedd0cf | 73 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 74 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf | 75 | .key_len = ETH_ALEN, |
ebd82b39 | 76 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
7bedd0cf JB |
77 | }; |
78 | ||
4d33960b | 79 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
80 | static int sta_info_hash_del(struct ieee80211_local *local, |
81 | struct sta_info *sta) | |
f0706e82 | 82 | { |
83e7e4ce HX |
83 | return rhltable_remove(&local->sta_hash, &sta->hash_node, |
84 | sta_rht_params); | |
f0706e82 JB |
85 | } |
86 | ||
5108ca82 | 87 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 88 | { |
b22cfcfc EP |
89 | int ac, i; |
90 | struct tid_ampdu_tx *tid_tx; | |
91 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
92 | struct ieee80211_local *local = sdata->local; | |
fa962b92 | 93 | struct fq *fq = &local->fq; |
d012a605 | 94 | struct ps_data *ps; |
b22cfcfc | 95 | |
e3685e03 | 96 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
97 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
98 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
99 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
100 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
101 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
102 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
103 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
104 | else |
105 | return; | |
b22cfcfc EP |
106 | |
107 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 108 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 109 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 110 | |
d012a605 | 111 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
112 | } |
113 | ||
ba8c3d6f FF |
114 | if (sta->sta.txq[0]) { |
115 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
116 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
ba8c3d6f | 117 | |
fa962b92 MK |
118 | spin_lock_bh(&fq->lock); |
119 | ieee80211_txq_purge(local, txqi); | |
120 | spin_unlock_bh(&fq->lock); | |
ba8c3d6f FF |
121 | } |
122 | } | |
123 | ||
b22cfcfc EP |
124 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
125 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
126 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
127 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
128 | } |
129 | ||
45b5028e TP |
130 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
131 | mesh_sta_cleanup(sta); | |
b22cfcfc | 132 | |
5ac2e350 | 133 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
134 | |
135 | /* | |
136 | * Destroy aggregation state here. It would be nice to wait for the | |
137 | * driver to finish aggregation stop and then clean up, but for now | |
138 | * drivers have to handle aggregation stop being requested, followed | |
139 | * directly by station destruction. | |
140 | */ | |
5a306f58 | 141 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 142 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
143 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
144 | if (!tid_tx) | |
145 | continue; | |
1f98ab7f | 146 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
147 | kfree(tid_tx); |
148 | } | |
5108ca82 | 149 | } |
b22cfcfc | 150 | |
5108ca82 JB |
151 | static void cleanup_single_sta(struct sta_info *sta) |
152 | { | |
153 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
154 | struct ieee80211_local *local = sdata->local; | |
155 | ||
156 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
157 | sta_info_free(local, sta); |
158 | } | |
159 | ||
83e7e4ce HX |
160 | struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
161 | const u8 *addr) | |
162 | { | |
163 | return rhltable_lookup(&local->sta_hash, addr, sta_rht_params); | |
164 | } | |
165 | ||
d0709a65 | 166 | /* protected by RCU */ |
abe60632 JB |
167 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
168 | const u8 *addr) | |
f0706e82 | 169 | { |
abe60632 | 170 | struct ieee80211_local *local = sdata->local; |
83e7e4ce | 171 | struct rhlist_head *tmp; |
60f4b626 | 172 | struct sta_info *sta; |
f0706e82 | 173 | |
60f4b626 | 174 | rcu_read_lock(); |
83e7e4ce | 175 | for_each_sta_info(local, addr, sta, tmp) { |
60f4b626 JB |
176 | if (sta->sdata == sdata) { |
177 | rcu_read_unlock(); | |
178 | /* this is safe as the caller must already hold | |
179 | * another rcu read section or the mutex | |
180 | */ | |
181 | return sta; | |
182 | } | |
183 | } | |
184 | rcu_read_unlock(); | |
185 | return NULL; | |
43ba7e95 JB |
186 | } |
187 | ||
0e5ded5a FF |
188 | /* |
189 | * Get sta info either from the specified interface | |
190 | * or from one of its vlans | |
191 | */ | |
192 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
193 | const u8 *addr) | |
194 | { | |
195 | struct ieee80211_local *local = sdata->local; | |
83e7e4ce | 196 | struct rhlist_head *tmp; |
0e5ded5a FF |
197 | struct sta_info *sta; |
198 | ||
7bedd0cf | 199 | rcu_read_lock(); |
83e7e4ce | 200 | for_each_sta_info(local, addr, sta, tmp) { |
7bedd0cf JB |
201 | if (sta->sdata == sdata || |
202 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
203 | rcu_read_unlock(); | |
204 | /* this is safe as the caller must already hold | |
205 | * another rcu read section or the mutex | |
206 | */ | |
207 | return sta; | |
208 | } | |
0e5ded5a | 209 | } |
7bedd0cf JB |
210 | rcu_read_unlock(); |
211 | return NULL; | |
0e5ded5a FF |
212 | } |
213 | ||
3b53fde8 JB |
214 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
215 | int idx) | |
ee385855 | 216 | { |
3b53fde8 | 217 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
218 | struct sta_info *sta; |
219 | int i = 0; | |
220 | ||
d0709a65 | 221 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 222 | if (sdata != sta->sdata) |
2a8ca29a | 223 | continue; |
ee385855 LCC |
224 | if (i < idx) { |
225 | ++i; | |
226 | continue; | |
ee385855 | 227 | } |
2a8ca29a | 228 | return sta; |
ee385855 | 229 | } |
ee385855 LCC |
230 | |
231 | return NULL; | |
232 | } | |
f0706e82 | 233 | |
93e5deb1 | 234 | /** |
d9a7ddb0 | 235 | * sta_info_free - free STA |
93e5deb1 | 236 | * |
6ef307bc | 237 | * @local: pointer to the global information |
93e5deb1 JB |
238 | * @sta: STA info to free |
239 | * | |
240 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
241 | * that may happen before sta_info_insert(). It may only be |
242 | * called when sta_info_insert() has not been attempted (and | |
243 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 244 | */ |
d9a7ddb0 | 245 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 246 | { |
889cbb91 | 247 | if (sta->rate_ctrl) |
af65cd96 | 248 | rate_control_free_sta(sta); |
93e5deb1 | 249 | |
bdcbd8e0 | 250 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 251 | |
ba8c3d6f FF |
252 | if (sta->sta.txq[0]) |
253 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 254 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
255 | #ifdef CONFIG_MAC80211_MESH |
256 | kfree(sta->mesh); | |
257 | #endif | |
c9c5962b | 258 | free_percpu(sta->pcpu_rx_stats); |
93e5deb1 JB |
259 | kfree(sta); |
260 | } | |
261 | ||
4d33960b | 262 | /* Caller must hold local->sta_mtx */ |
62b14b24 JB |
263 | static int sta_info_hash_add(struct ieee80211_local *local, |
264 | struct sta_info *sta) | |
f0706e82 | 265 | { |
83e7e4ce HX |
266 | return rhltable_insert(&local->sta_hash, &sta->hash_node, |
267 | sta_rht_params); | |
f0706e82 | 268 | } |
f0706e82 | 269 | |
5ac2e350 | 270 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
271 | { |
272 | struct sta_info *sta; | |
273 | ||
5ac2e350 | 274 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
275 | |
276 | if (sta->dead) | |
277 | return; | |
278 | ||
5ac2e350 JB |
279 | local_bh_disable(); |
280 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 281 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 282 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 283 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 284 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 285 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 286 | local_bh_enable(); |
af818581 JB |
287 | } |
288 | ||
af65cd96 JB |
289 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
290 | struct sta_info *sta, gfp_t gfp) | |
291 | { | |
30686bf7 | 292 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
293 | return 0; |
294 | ||
889cbb91 | 295 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 296 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 297 | sta, gfp); |
889cbb91 | 298 | if (!sta->rate_ctrl_priv) |
af65cd96 | 299 | return -ENOMEM; |
af65cd96 JB |
300 | |
301 | return 0; | |
302 | } | |
303 | ||
73651ee6 | 304 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 305 | const u8 *addr, gfp_t gfp) |
f0706e82 | 306 | { |
d0709a65 | 307 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 308 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 309 | struct sta_info *sta; |
16c5f15c | 310 | int i; |
f0706e82 | 311 | |
ba8c3d6f | 312 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 313 | if (!sta) |
73651ee6 | 314 | return NULL; |
f0706e82 | 315 | |
c9c5962b JB |
316 | if (ieee80211_hw_check(hw, USES_RSS)) { |
317 | sta->pcpu_rx_stats = | |
95f3ce6a | 318 | alloc_percpu_gfp(struct ieee80211_sta_rx_stats, gfp); |
c9c5962b JB |
319 | if (!sta->pcpu_rx_stats) |
320 | goto free; | |
321 | } | |
322 | ||
07346f81 | 323 | spin_lock_init(&sta->lock); |
1d147bfa | 324 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 325 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 326 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 327 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 328 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
329 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
330 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
331 | if (!sta->mesh) | |
332 | goto free; | |
4c02d62f | 333 | sta->mesh->plink_sta = sta; |
433f5bc1 JB |
334 | spin_lock_init(&sta->mesh->plink_lock); |
335 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
336 | !sdata->u.mesh.user_mpm) | |
4c02d62f KC |
337 | timer_setup(&sta->mesh->plink_timer, mesh_plink_timer, |
338 | 0); | |
433f5bc1 JB |
339 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
340 | } | |
87f59c70 | 341 | #endif |
07346f81 | 342 | |
ac100ce5 | 343 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 344 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
480dd46b MA |
345 | sta->sta.max_rx_aggregation_subframes = |
346 | local->hw.max_rx_aggregation_subframes; | |
347 | ||
d0709a65 JB |
348 | sta->local = local; |
349 | sta->sdata = sdata; | |
e5a9f8d0 | 350 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 351 | |
0f9c5a61 JB |
352 | u64_stats_init(&sta->rx_stats.syncp); |
353 | ||
71ec375c JB |
354 | sta->sta_state = IEEE80211_STA_NONE; |
355 | ||
b6da911b LK |
356 | /* Mark TID as unreserved */ |
357 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
358 | ||
84b00607 | 359 | sta->last_connected = ktime_get_seconds(); |
0be6ed13 | 360 | ewma_signal_init(&sta->rx_stats_avg.signal); |
cc60dbbf | 361 | ewma_avg_signal_init(&sta->status_stats.avg_ack_signal); |
0be6ed13 JB |
362 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) |
363 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); | |
541a45a1 | 364 | |
ba8c3d6f FF |
365 | if (local->ops->wake_tx_queue) { |
366 | void *txq_data; | |
367 | int size = sizeof(struct txq_info) + | |
368 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
369 | ||
370 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
371 | if (!txq_data) | |
372 | goto free; | |
373 | ||
374 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
375 | struct txq_info *txq = txq_data + i * size; | |
376 | ||
fa962b92 | 377 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 378 | } |
abfbc3af | 379 | } |
f0706e82 | 380 | |
ba8c3d6f FF |
381 | if (sta_prepare_rate_control(local, sta, gfp)) |
382 | goto free_txq; | |
383 | ||
948d887d JB |
384 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
385 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
386 | skb_queue_head_init(&sta->tx_filtered[i]); | |
387 | } | |
73651ee6 | 388 | |
5a306f58 | 389 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 390 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 391 | |
af0ed69b | 392 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
393 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
394 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
21a8e9dd MSS |
395 | struct ieee80211_supported_band *sband; |
396 | u8 smps; | |
397 | ||
398 | sband = ieee80211_get_sband(sdata); | |
399 | if (!sband) | |
400 | goto free_txq; | |
401 | ||
402 | smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> | |
403 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
687da132 EG |
404 | /* |
405 | * Assume that hostapd advertises our caps in the beacon and | |
406 | * this is the known_smps_mode for a station that just assciated | |
407 | */ | |
408 | switch (smps) { | |
409 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
410 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
411 | break; | |
412 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
413 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
414 | break; | |
415 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
416 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
417 | break; | |
418 | default: | |
419 | WARN_ON(1); | |
420 | } | |
421 | } | |
af0ed69b | 422 | |
6e0456b5 FF |
423 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
424 | ||
484a54c2 THJ |
425 | sta->cparams.ce_threshold = CODEL_DISABLED_THRESHOLD; |
426 | sta->cparams.target = MS2TIME(20); | |
427 | sta->cparams.interval = MS2TIME(100); | |
428 | sta->cparams.ecn = true; | |
429 | ||
bdcbd8e0 | 430 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 431 | |
abfbc3af | 432 | return sta; |
ba8c3d6f FF |
433 | |
434 | free_txq: | |
435 | if (sta->sta.txq[0]) | |
436 | kfree(to_txq_info(sta->sta.txq[0])); | |
437 | free: | |
d78d9ee9 | 438 | free_percpu(sta->pcpu_rx_stats); |
433f5bc1 JB |
439 | #ifdef CONFIG_MAC80211_MESH |
440 | kfree(sta->mesh); | |
441 | #endif | |
ba8c3d6f FF |
442 | kfree(sta); |
443 | return NULL; | |
73651ee6 JB |
444 | } |
445 | ||
8c71df7a | 446 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 447 | { |
34e89507 | 448 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 449 | |
03e4497e JB |
450 | /* |
451 | * Can't be a WARN_ON because it can be triggered through a race: | |
452 | * something inserts a STA (on one CPU) without holding the RTNL | |
453 | * and another CPU turns off the net device. | |
454 | */ | |
8c71df7a GE |
455 | if (unlikely(!ieee80211_sdata_running(sdata))) |
456 | return -ENETDOWN; | |
03e4497e | 457 | |
b203ca39 | 458 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
459 | is_multicast_ether_addr(sta->sta.addr))) |
460 | return -EINVAL; | |
461 | ||
83e7e4ce HX |
462 | /* The RCU read lock is required by rhashtable due to |
463 | * asynchronous resize/rehash. We also require the mutex | |
464 | * for correctness. | |
31104891 JB |
465 | */ |
466 | rcu_read_lock(); | |
467 | lockdep_assert_held(&sdata->local->sta_mtx); | |
468 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
469 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
470 | rcu_read_unlock(); | |
471 | return -ENOTUNIQ; | |
472 | } | |
473 | rcu_read_unlock(); | |
474 | ||
8c71df7a GE |
475 | return 0; |
476 | } | |
477 | ||
f09603a2 JB |
478 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
479 | struct ieee80211_sub_if_data *sdata, | |
480 | struct sta_info *sta) | |
481 | { | |
482 | enum ieee80211_sta_state state; | |
483 | int err = 0; | |
484 | ||
485 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
486 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
487 | if (err) | |
488 | break; | |
489 | } | |
490 | ||
491 | if (!err) { | |
a4ec45a4 JB |
492 | /* |
493 | * Drivers using legacy sta_add/sta_remove callbacks only | |
494 | * get uploaded set to true after sta_add is called. | |
495 | */ | |
496 | if (!local->ops->sta_add) | |
497 | sta->uploaded = true; | |
f09603a2 JB |
498 | return 0; |
499 | } | |
500 | ||
501 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
502 | sdata_info(sdata, |
503 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
504 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
505 | err = 0; |
506 | } | |
507 | ||
508 | /* unwind on error */ | |
509 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
510 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
511 | ||
512 | return err; | |
513 | } | |
514 | ||
d405fd8c GG |
515 | static void |
516 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
517 | { | |
518 | struct ieee80211_local *local = sdata->local; | |
519 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
520 | struct sta_info *sta; | |
521 | ||
522 | rcu_read_lock(); | |
523 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
524 | if (sdata != sta->sdata || | |
525 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
526 | continue; | |
527 | if (!sta->sta.support_p2p_ps) { | |
528 | allow_p2p_go_ps = false; | |
529 | break; | |
530 | } | |
531 | } | |
532 | rcu_read_unlock(); | |
533 | ||
534 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
535 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
536 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); | |
537 | } | |
538 | } | |
539 | ||
8c71df7a GE |
540 | /* |
541 | * should be called with sta_mtx locked | |
542 | * this function replaces the mutex lock | |
543 | * with a RCU lock | |
544 | */ | |
4d33960b | 545 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
546 | { |
547 | struct ieee80211_local *local = sta->local; | |
548 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c2e3842 | 549 | struct station_info *sinfo = NULL; |
8c71df7a GE |
550 | int err = 0; |
551 | ||
552 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 553 | |
7852e361 JB |
554 | /* check if STA exists already */ |
555 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
556 | err = -EEXIST; | |
557 | goto out_err; | |
4d33960b | 558 | } |
32bfd35d | 559 | |
0c2e3842 KV |
560 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
561 | if (!sinfo) { | |
562 | err = -ENOMEM; | |
563 | goto out_err; | |
564 | } | |
565 | ||
7852e361 JB |
566 | local->num_sta++; |
567 | local->sta_generation++; | |
568 | smp_mb(); | |
4d33960b | 569 | |
5108ca82 JB |
570 | /* simplify things and don't accept BA sessions yet */ |
571 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
572 | ||
7852e361 | 573 | /* make the station visible */ |
62b14b24 JB |
574 | err = sta_info_hash_add(local, sta); |
575 | if (err) | |
576 | goto out_drop_sta; | |
83d5cc01 | 577 | |
2bad7748 | 578 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 579 | |
5108ca82 JB |
580 | /* notify driver */ |
581 | err = sta_info_insert_drv_state(local, sdata, sta); | |
582 | if (err) | |
583 | goto out_remove; | |
584 | ||
7852e361 | 585 | set_sta_flag(sta, WLAN_STA_INSERTED); |
d405fd8c GG |
586 | |
587 | if (sta->sta_state >= IEEE80211_STA_ASSOC) { | |
588 | ieee80211_recalc_min_chandef(sta->sdata); | |
589 | if (!sta->sta.support_p2p_ps) | |
590 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
591 | } | |
592 | ||
5108ca82 JB |
593 | /* accept BA sessions now */ |
594 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 595 | |
7852e361 JB |
596 | ieee80211_sta_debugfs_add(sta); |
597 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 598 | |
0ef049dc AB |
599 | sinfo->generation = local->sta_generation; |
600 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
601 | kfree(sinfo); | |
d0709a65 | 602 | |
bdcbd8e0 | 603 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 604 | |
34e89507 JB |
605 | /* move reference to rcu-protected */ |
606 | rcu_read_lock(); | |
607 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 608 | |
73651ee6 JB |
609 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
610 | mesh_accept_plinks_update(sdata); | |
611 | ||
8c71df7a | 612 | return 0; |
5108ca82 JB |
613 | out_remove: |
614 | sta_info_hash_del(local, sta); | |
615 | list_del_rcu(&sta->list); | |
62b14b24 | 616 | out_drop_sta: |
5108ca82 JB |
617 | local->num_sta--; |
618 | synchronize_net(); | |
619 | __cleanup_single_sta(sta); | |
4d33960b JB |
620 | out_err: |
621 | mutex_unlock(&local->sta_mtx); | |
ea32f065 | 622 | kfree(sinfo); |
4d33960b JB |
623 | rcu_read_lock(); |
624 | return err; | |
8c71df7a GE |
625 | } |
626 | ||
627 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
628 | { | |
629 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 630 | int err; |
8c71df7a | 631 | |
4d33960b JB |
632 | might_sleep(); |
633 | ||
31104891 JB |
634 | mutex_lock(&local->sta_mtx); |
635 | ||
8c71df7a GE |
636 | err = sta_info_insert_check(sta); |
637 | if (err) { | |
31104891 | 638 | mutex_unlock(&local->sta_mtx); |
8c71df7a GE |
639 | rcu_read_lock(); |
640 | goto out_free; | |
641 | } | |
642 | ||
4d33960b | 643 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
644 | if (err) |
645 | goto out_free; | |
646 | ||
73651ee6 | 647 | return 0; |
93e5deb1 | 648 | out_free: |
d9a7ddb0 | 649 | sta_info_free(local, sta); |
93e5deb1 | 650 | return err; |
f0706e82 JB |
651 | } |
652 | ||
34e89507 JB |
653 | int sta_info_insert(struct sta_info *sta) |
654 | { | |
655 | int err = sta_info_insert_rcu(sta); | |
656 | ||
657 | rcu_read_unlock(); | |
658 | ||
659 | return err; | |
660 | } | |
661 | ||
d012a605 | 662 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
663 | { |
664 | /* | |
665 | * This format has been mandated by the IEEE specifications, | |
666 | * so this line may not be changed to use the __set_bit() format. | |
667 | */ | |
d012a605 | 668 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
669 | } |
670 | ||
d012a605 | 671 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
672 | { |
673 | /* | |
674 | * This format has been mandated by the IEEE specifications, | |
675 | * so this line may not be changed to use the __clear_bit() format. | |
676 | */ | |
d012a605 | 677 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
678 | } |
679 | ||
3d5839b6 IP |
680 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
681 | { | |
682 | /* | |
683 | * This format has been mandated by the IEEE specifications, | |
684 | * so this line may not be changed to use the test_bit() format. | |
685 | */ | |
686 | return tim[id / 8] & (1 << (id % 8)); | |
687 | } | |
688 | ||
948d887d | 689 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 690 | { |
948d887d JB |
691 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
692 | switch (ac) { | |
693 | case IEEE80211_AC_VO: | |
694 | return BIT(6) | BIT(7); | |
695 | case IEEE80211_AC_VI: | |
696 | return BIT(4) | BIT(5); | |
697 | case IEEE80211_AC_BE: | |
698 | return BIT(0) | BIT(3); | |
699 | case IEEE80211_AC_BK: | |
700 | return BIT(1) | BIT(2); | |
701 | default: | |
702 | WARN_ON(1); | |
703 | return 0; | |
d0709a65 | 704 | } |
004c872e JB |
705 | } |
706 | ||
9b7a86f3 | 707 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 708 | { |
c868cb35 | 709 | struct ieee80211_local *local = sta->local; |
d012a605 | 710 | struct ps_data *ps; |
948d887d JB |
711 | bool indicate_tim = false; |
712 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
713 | int ac; | |
a69bd8e6 | 714 | u16 id = sta->sta.aid; |
d012a605 MP |
715 | |
716 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
717 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
718 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
719 | return; | |
004c872e | 720 | |
d012a605 | 721 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
722 | #ifdef CONFIG_MAC80211_MESH |
723 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
724 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 725 | #endif |
d012a605 | 726 | } else { |
c868cb35 | 727 | return; |
d012a605 | 728 | } |
3e122be0 | 729 | |
c868cb35 | 730 | /* No need to do anything if the driver does all */ |
d98937f4 | 731 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) |
c868cb35 | 732 | return; |
004c872e | 733 | |
c868cb35 JB |
734 | if (sta->dead) |
735 | goto done; | |
3e122be0 | 736 | |
948d887d JB |
737 | /* |
738 | * If all ACs are delivery-enabled then we should build | |
739 | * the TIM bit for all ACs anyway; if only some are then | |
740 | * we ignore those and build the TIM bit using only the | |
741 | * non-enabled ones. | |
742 | */ | |
743 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
744 | ignore_for_tim = 0; | |
745 | ||
9b7a86f3 JB |
746 | if (ignore_pending) |
747 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
748 | ||
948d887d JB |
749 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
750 | unsigned long tids; | |
3e122be0 | 751 | |
f438ceb8 | 752 | if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
753 | continue; |
754 | ||
755 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
756 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
757 | if (indicate_tim) | |
758 | break; | |
3e122be0 | 759 | |
948d887d JB |
760 | tids = ieee80211_tids_for_ac(ac); |
761 | ||
762 | indicate_tim |= | |
763 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
764 | indicate_tim |= |
765 | sta->txq_buffered_tids & tids; | |
d0709a65 | 766 | } |
004c872e | 767 | |
c868cb35 | 768 | done: |
65f704a5 | 769 | spin_lock_bh(&local->tim_lock); |
004c872e | 770 | |
3d5839b6 IP |
771 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
772 | goto out_unlock; | |
773 | ||
948d887d | 774 | if (indicate_tim) |
d012a605 | 775 | __bss_tim_set(ps->tim, id); |
c868cb35 | 776 | else |
d012a605 | 777 | __bss_tim_clear(ps->tim, id); |
004c872e | 778 | |
9b7a86f3 | 779 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 780 | local->tim_in_locked_section = true; |
948d887d | 781 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
782 | local->tim_in_locked_section = false; |
783 | } | |
3e122be0 | 784 | |
3d5839b6 | 785 | out_unlock: |
65f704a5 | 786 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
787 | } |
788 | ||
9b7a86f3 JB |
789 | void sta_info_recalc_tim(struct sta_info *sta) |
790 | { | |
791 | __sta_info_recalc_tim(sta, false); | |
792 | } | |
793 | ||
cd0b8d89 | 794 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 795 | { |
e039fa4a | 796 | struct ieee80211_tx_info *info; |
f0706e82 JB |
797 | int timeout; |
798 | ||
799 | if (!skb) | |
cd0b8d89 | 800 | return false; |
f0706e82 | 801 | |
e039fa4a | 802 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
803 | |
804 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
805 | timeout = (sta->listen_interval * |
806 | sta->sdata->vif.bss_conf.beacon_int * | |
807 | 32 / 15625) * HZ; | |
f0706e82 JB |
808 | if (timeout < STA_TX_BUFFER_EXPIRE) |
809 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 810 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
811 | } |
812 | ||
813 | ||
948d887d JB |
814 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
815 | struct sta_info *sta, int ac) | |
f0706e82 JB |
816 | { |
817 | unsigned long flags; | |
818 | struct sk_buff *skb; | |
819 | ||
60750397 JB |
820 | /* |
821 | * First check for frames that should expire on the filtered | |
822 | * queue. Frames here were rejected by the driver and are on | |
823 | * a separate queue to avoid reordering with normal PS-buffered | |
824 | * frames. They also aren't accounted for right now in the | |
825 | * total_ps_buffered counter. | |
826 | */ | |
827 | for (;;) { | |
948d887d JB |
828 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
829 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 830 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 831 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
832 | else |
833 | skb = NULL; | |
948d887d | 834 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
835 | |
836 | /* | |
837 | * Frames are queued in order, so if this one | |
838 | * hasn't expired yet we can stop testing. If | |
839 | * we actually reached the end of the queue we | |
840 | * also need to stop, of course. | |
841 | */ | |
842 | if (!skb) | |
843 | break; | |
d4fa14cd | 844 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
845 | } |
846 | ||
847 | /* | |
848 | * Now also check the normal PS-buffered queue, this will | |
849 | * only find something if the filtered queue was emptied | |
850 | * since the filtered frames are all before the normal PS | |
851 | * buffered frames. | |
852 | */ | |
f0706e82 | 853 | for (;;) { |
948d887d JB |
854 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
855 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 856 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 857 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 858 | else |
f0706e82 | 859 | skb = NULL; |
948d887d | 860 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 861 | |
60750397 JB |
862 | /* |
863 | * frames are queued in order, so if this one | |
864 | * hasn't expired yet (or we reached the end of | |
865 | * the queue) we can stop testing | |
866 | */ | |
836341a7 | 867 | if (!skb) |
f0706e82 | 868 | break; |
836341a7 | 869 | |
836341a7 | 870 | local->total_ps_buffered--; |
bdcbd8e0 JB |
871 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
872 | sta->sta.addr); | |
d4fa14cd | 873 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 874 | } |
3393a608 | 875 | |
60750397 JB |
876 | /* |
877 | * Finally, recalculate the TIM bit for this station -- it might | |
878 | * now be clear because the station was too slow to retrieve its | |
879 | * frames. | |
880 | */ | |
881 | sta_info_recalc_tim(sta); | |
882 | ||
883 | /* | |
884 | * Return whether there are any frames still buffered, this is | |
885 | * used to check whether the cleanup timer still needs to run, | |
886 | * if there are no frames we don't need to rearm the timer. | |
887 | */ | |
948d887d JB |
888 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
889 | skb_queue_empty(&sta->tx_filtered[ac])); | |
890 | } | |
891 | ||
892 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
893 | struct sta_info *sta) | |
894 | { | |
895 | bool have_buffered = false; | |
896 | int ac; | |
897 | ||
3f52b7e3 MP |
898 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
899 | if (!sta->sdata->bss && | |
900 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
901 | return false; |
902 | ||
903 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
904 | have_buffered |= | |
905 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
906 | ||
907 | return have_buffered; | |
f0706e82 JB |
908 | } |
909 | ||
d778207b | 910 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 911 | { |
34e89507 JB |
912 | struct ieee80211_local *local; |
913 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 914 | int ret; |
f0706e82 | 915 | |
34e89507 | 916 | might_sleep(); |
f0706e82 | 917 | |
34e89507 JB |
918 | if (!sta) |
919 | return -ENOENT; | |
5bb644a0 | 920 | |
34e89507 JB |
921 | local = sta->local; |
922 | sdata = sta->sdata; | |
f0706e82 | 923 | |
83d5cc01 JB |
924 | lockdep_assert_held(&local->sta_mtx); |
925 | ||
098a6070 JB |
926 | /* |
927 | * Before removing the station from the driver and | |
928 | * rate control, it might still start new aggregation | |
929 | * sessions -- block that to make sure the tear-down | |
930 | * will be sufficient. | |
931 | */ | |
c2c98fde | 932 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 933 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 934 | |
f59374eb SS |
935 | /* |
936 | * Before removing the station from the driver there might be pending | |
937 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
938 | * all such frames to be processed. | |
939 | */ | |
940 | drv_sync_rx_queues(local, sta); | |
941 | ||
34e89507 | 942 | ret = sta_info_hash_del(local, sta); |
b01711be | 943 | if (WARN_ON(ret)) |
34e89507 JB |
944 | return ret; |
945 | ||
a7a6bdd0 AN |
946 | /* |
947 | * for TDLS peers, make sure to return to the base channel before | |
948 | * removal. | |
949 | */ | |
950 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
951 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
952 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
953 | } | |
954 | ||
794454ce | 955 | list_del_rcu(&sta->list); |
ef044763 | 956 | sta->removed = true; |
4d33960b | 957 | |
6a9d1b91 JB |
958 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
959 | ||
a710c816 JB |
960 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
961 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
962 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
963 | ||
d778207b JB |
964 | return 0; |
965 | } | |
966 | ||
967 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
968 | { | |
969 | struct ieee80211_local *local = sta->local; | |
970 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 971 | struct station_info *sinfo; |
d778207b JB |
972 | int ret; |
973 | ||
974 | /* | |
975 | * NOTE: This assumes at least synchronize_net() was done | |
976 | * after _part1 and before _part2! | |
977 | */ | |
978 | ||
979 | might_sleep(); | |
980 | lockdep_assert_held(&local->sta_mtx); | |
981 | ||
c8782078 | 982 | /* now keys can no longer be reached */ |
6d10e46b | 983 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 984 | |
9b7a86f3 JB |
985 | /* disable TIM bit - last chance to tell driver */ |
986 | __sta_info_recalc_tim(sta, true); | |
987 | ||
34e89507 JB |
988 | sta->dead = true; |
989 | ||
34e89507 JB |
990 | local->num_sta--; |
991 | local->sta_generation++; | |
992 | ||
83d5cc01 | 993 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
994 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
995 | if (ret) { | |
83d5cc01 JB |
996 | WARN_ON_ONCE(1); |
997 | break; | |
998 | } | |
999 | } | |
d9a7ddb0 | 1000 | |
f09603a2 | 1001 | if (sta->uploaded) { |
f09603a2 JB |
1002 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
1003 | IEEE80211_STA_NOTEXIST); | |
1004 | WARN_ON_ONCE(ret != 0); | |
1005 | } | |
34e89507 | 1006 | |
bdcbd8e0 JB |
1007 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
1008 | ||
0ef049dc AB |
1009 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
1010 | if (sinfo) | |
1011 | sta_set_sinfo(sta, sinfo); | |
1012 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
1013 | kfree(sinfo); | |
ec15e68b | 1014 | |
34e89507 JB |
1015 | rate_control_remove_sta_debugfs(sta); |
1016 | ieee80211_sta_debugfs_remove(sta); | |
1017 | ||
d34ba216 | 1018 | cleanup_single_sta(sta); |
d778207b JB |
1019 | } |
1020 | ||
1021 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
1022 | { | |
1023 | int err = __sta_info_destroy_part1(sta); | |
1024 | ||
1025 | if (err) | |
1026 | return err; | |
1027 | ||
1028 | synchronize_net(); | |
1029 | ||
1030 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
1031 | |
1032 | return 0; | |
4d6141c3 JS |
1033 | } |
1034 | ||
34e89507 | 1035 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 1036 | { |
34e89507 JB |
1037 | struct sta_info *sta; |
1038 | int ret; | |
4d6141c3 | 1039 | |
34e89507 | 1040 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1041 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1042 | ret = __sta_info_destroy(sta); |
1043 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1044 | |
1045 | return ret; | |
1046 | } | |
1047 | ||
34e89507 JB |
1048 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1049 | const u8 *addr) | |
e9f207f0 | 1050 | { |
34e89507 JB |
1051 | struct sta_info *sta; |
1052 | int ret; | |
e9f207f0 | 1053 | |
34e89507 | 1054 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1055 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1056 | ret = __sta_info_destroy(sta); |
1057 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1058 | |
34e89507 JB |
1059 | return ret; |
1060 | } | |
e9f207f0 | 1061 | |
34f11cd3 | 1062 | static void sta_info_cleanup(struct timer_list *t) |
34e89507 | 1063 | { |
34f11cd3 | 1064 | struct ieee80211_local *local = from_timer(local, t, sta_cleanup); |
34e89507 | 1065 | struct sta_info *sta; |
3393a608 | 1066 | bool timer_needed = false; |
34e89507 JB |
1067 | |
1068 | rcu_read_lock(); | |
1069 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1070 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1071 | timer_needed = true; | |
34e89507 | 1072 | rcu_read_unlock(); |
e9f207f0 | 1073 | |
34e89507 JB |
1074 | if (local->quiescing) |
1075 | return; | |
d0709a65 | 1076 | |
3393a608 JO |
1077 | if (!timer_needed) |
1078 | return; | |
1079 | ||
26d59535 JB |
1080 | mod_timer(&local->sta_cleanup, |
1081 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1082 | } |
e9f207f0 | 1083 | |
7bedd0cf JB |
1084 | int sta_info_init(struct ieee80211_local *local) |
1085 | { | |
1086 | int err; | |
1087 | ||
83e7e4ce | 1088 | err = rhltable_init(&local->sta_hash, &sta_rht_params); |
7bedd0cf JB |
1089 | if (err) |
1090 | return err; | |
1091 | ||
4d33960b | 1092 | spin_lock_init(&local->tim_lock); |
34e89507 | 1093 | mutex_init(&local->sta_mtx); |
f0706e82 | 1094 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1095 | |
34f11cd3 | 1096 | timer_setup(&local->sta_cleanup, sta_info_cleanup, 0); |
7bedd0cf | 1097 | return 0; |
f0706e82 JB |
1098 | } |
1099 | ||
1100 | void sta_info_stop(struct ieee80211_local *local) | |
1101 | { | |
a56f992c | 1102 | del_timer_sync(&local->sta_cleanup); |
83e7e4ce | 1103 | rhltable_destroy(&local->sta_hash); |
f0706e82 JB |
1104 | } |
1105 | ||
051007d9 | 1106 | |
e716251d | 1107 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1108 | { |
b998e8bb | 1109 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1110 | struct sta_info *sta, *tmp; |
d778207b | 1111 | LIST_HEAD(free_list); |
44213b5e | 1112 | int ret = 0; |
f0706e82 | 1113 | |
d0709a65 | 1114 | might_sleep(); |
be8755e1 | 1115 | |
e716251d JB |
1116 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1117 | WARN_ON(vlans && !sdata->bss); | |
1118 | ||
34e89507 | 1119 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1120 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1121 | if (sdata == sta->sdata || |
1122 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1123 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1124 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1125 | ret++; |
1126 | } | |
be8755e1 | 1127 | } |
d778207b JB |
1128 | |
1129 | if (!list_empty(&free_list)) { | |
1130 | synchronize_net(); | |
1131 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1132 | __sta_info_destroy_part2(sta); | |
1133 | } | |
34e89507 | 1134 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1135 | |
051007d9 JB |
1136 | return ret; |
1137 | } | |
1138 | ||
24723d1b JB |
1139 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1140 | unsigned long exp_time) | |
1141 | { | |
1142 | struct ieee80211_local *local = sdata->local; | |
1143 | struct sta_info *sta, *tmp; | |
24723d1b | 1144 | |
34e89507 | 1145 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1146 | |
1147 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1148 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1149 | ||
ec2b774e ML |
1150 | if (sdata != sta->sdata) |
1151 | continue; | |
1152 | ||
b8da6b6a | 1153 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1154 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1155 | sta->sta.addr); | |
3f52b7e3 MP |
1156 | |
1157 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1158 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1159 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1160 | ||
34e89507 | 1161 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1162 | } |
e46a2cf9 MSS |
1163 | } |
1164 | ||
34e89507 | 1165 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1166 | } |
17741cdc | 1167 | |
686b9cb9 | 1168 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1169 | const u8 *addr, |
1170 | const u8 *localaddr) | |
17741cdc | 1171 | { |
7bedd0cf | 1172 | struct ieee80211_local *local = hw_to_local(hw); |
83e7e4ce | 1173 | struct rhlist_head *tmp; |
7bedd0cf | 1174 | struct sta_info *sta; |
17741cdc | 1175 | |
686b9cb9 BG |
1176 | /* |
1177 | * Just return a random station if localaddr is NULL | |
1178 | * ... first in list. | |
1179 | */ | |
83e7e4ce | 1180 | for_each_sta_info(local, addr, sta, tmp) { |
686b9cb9 | 1181 | if (localaddr && |
b203ca39 | 1182 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1183 | continue; |
f7c65594 JB |
1184 | if (!sta->uploaded) |
1185 | return NULL; | |
abe60632 | 1186 | return &sta->sta; |
f7c65594 JB |
1187 | } |
1188 | ||
abe60632 | 1189 | return NULL; |
17741cdc | 1190 | } |
686b9cb9 | 1191 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1192 | |
1193 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1194 | const u8 *addr) | |
1195 | { | |
f7c65594 | 1196 | struct sta_info *sta; |
5ed176e1 JB |
1197 | |
1198 | if (!vif) | |
1199 | return NULL; | |
1200 | ||
f7c65594 JB |
1201 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1202 | if (!sta) | |
1203 | return NULL; | |
1204 | ||
1205 | if (!sta->uploaded) | |
1206 | return NULL; | |
5ed176e1 | 1207 | |
f7c65594 | 1208 | return &sta->sta; |
5ed176e1 | 1209 | } |
17741cdc | 1210 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1211 | |
e3685e03 JB |
1212 | /* powersave support code */ |
1213 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1214 | { |
608383bf | 1215 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1216 | struct ieee80211_local *local = sdata->local; |
1217 | struct sk_buff_head pending; | |
ba8c3d6f | 1218 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1219 | unsigned long flags; |
d012a605 MP |
1220 | struct ps_data *ps; |
1221 | ||
3918edb0 FF |
1222 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1223 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1224 | u.ap); | |
1225 | ||
1226 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1227 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1228 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1229 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1230 | else |
1231 | return; | |
50a9432d | 1232 | |
c2c98fde | 1233 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1234 | |
5a306f58 | 1235 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1236 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1237 | sta->txq_buffered_tids = 0; |
af818581 | 1238 | |
30686bf7 | 1239 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1240 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1241 | |
ba8c3d6f FF |
1242 | if (sta->sta.txq[0]) { |
1243 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
bb42f2d1 | 1244 | if (!txq_has_queue(sta->sta.txq[i])) |
ba8c3d6f FF |
1245 | continue; |
1246 | ||
bb42f2d1 | 1247 | drv_wake_tx_queue(local, to_txq_info(sta->sta.txq[i])); |
ba8c3d6f FF |
1248 | } |
1249 | } | |
1250 | ||
948d887d | 1251 | skb_queue_head_init(&pending); |
af818581 | 1252 | |
1d147bfa EG |
1253 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1254 | spin_lock(&sta->ps_lock); | |
af818581 | 1255 | /* Send all buffered frames to the station */ |
948d887d JB |
1256 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1257 | int count = skb_queue_len(&pending), tmp; | |
1258 | ||
987c285c | 1259 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1260 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1261 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1262 | tmp = skb_queue_len(&pending); |
1263 | filtered += tmp - count; | |
1264 | count = tmp; | |
1265 | ||
987c285c | 1266 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1267 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1268 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1269 | tmp = skb_queue_len(&pending); |
1270 | buffered += tmp - count; | |
1271 | } | |
1272 | ||
e3685e03 | 1273 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1274 | |
1275 | /* now we're no longer in the deliver code */ | |
1276 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1277 | ||
1278 | /* The station might have polled and then woken up before we responded, | |
1279 | * so clear these flags now to avoid them sticking around. | |
1280 | */ | |
1281 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1282 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1283 | spin_unlock(&sta->ps_lock); |
948d887d | 1284 | |
e3685e03 JB |
1285 | atomic_dec(&ps->num_sta_ps); |
1286 | ||
687da132 | 1287 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1288 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1289 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1290 | sdata->smps_mode) && |
1291 | sta->known_smps_mode != sdata->bss->req_smps && | |
1292 | sta_info_tx_streams(sta) != 1) { | |
1293 | ht_dbg(sdata, | |
1294 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1295 | sta->sta.addr); | |
1296 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1297 | sta->sta.addr, | |
1298 | sdata->vif.bss_conf.bssid); | |
1299 | } | |
1300 | ||
af818581 JB |
1301 | local->total_ps_buffered -= buffered; |
1302 | ||
c868cb35 JB |
1303 | sta_info_recalc_tim(sta); |
1304 | ||
bdcbd8e0 | 1305 | ps_dbg(sdata, |
2595d259 | 1306 | "STA %pM aid %d sending %d filtered/%d PS frames since STA woke up\n", |
bdcbd8e0 | 1307 | sta->sta.addr, sta->sta.aid, filtered, buffered); |
17c18bf8 JB |
1308 | |
1309 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1310 | } |
1311 | ||
0ead2510 | 1312 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1313 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1314 | bool call_driver, bool more_data) |
af818581 | 1315 | { |
0ead2510 | 1316 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1317 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1318 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1319 | struct sk_buff *skb; |
ce662b44 JB |
1320 | int size = sizeof(*nullfunc); |
1321 | __le16 fc; | |
a74a8c84 | 1322 | bool qos = sta->sta.wme; |
ce662b44 | 1323 | struct ieee80211_tx_info *info; |
55de908a | 1324 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1325 | |
ce662b44 JB |
1326 | if (qos) { |
1327 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1328 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1329 | IEEE80211_FCTL_FROMDS); | |
1330 | } else { | |
1331 | size -= 2; | |
1332 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1333 | IEEE80211_STYPE_NULLFUNC | | |
1334 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1335 | } |
af818581 | 1336 | |
ce662b44 JB |
1337 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1338 | if (!skb) | |
1339 | return; | |
1340 | ||
1341 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1342 | ||
4df864c1 | 1343 | nullfunc = skb_put(skb, size); |
ce662b44 JB |
1344 | nullfunc->frame_control = fc; |
1345 | nullfunc->duration_id = 0; | |
1346 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1347 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1348 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1349 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1350 | |
59b66255 JB |
1351 | skb->priority = tid; |
1352 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1353 | if (qos) { |
ce662b44 JB |
1354 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1355 | ||
0ead2510 | 1356 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1357 | nullfunc->qos_ctrl |= |
1358 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1359 | if (more_data) |
1360 | nullfunc->frame_control |= | |
1361 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1362 | } | |
ce662b44 JB |
1363 | } |
1364 | ||
1365 | info = IEEE80211_SKB_CB(skb); | |
1366 | ||
1367 | /* | |
1368 | * Tell TX path to send this frame even though the | |
1369 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1370 | * exchange. Also set EOSP to indicate this packet |
1371 | * ends the poll/service period. | |
ce662b44 | 1372 | */ |
02f2f1a9 | 1373 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1374 | IEEE80211_TX_STATUS_EOSP | |
1375 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1376 | |
6b127c71 SM |
1377 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1378 | ||
b77cf4f8 JB |
1379 | if (call_driver) |
1380 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1381 | reason, false); | |
40b96408 | 1382 | |
89afe614 JB |
1383 | skb->dev = sdata->dev; |
1384 | ||
55de908a JB |
1385 | rcu_read_lock(); |
1386 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1387 | if (WARN_ON(!chanctx_conf)) { | |
1388 | rcu_read_unlock(); | |
1389 | kfree_skb(skb); | |
1390 | return; | |
1391 | } | |
1392 | ||
73c4e195 | 1393 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1394 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1395 | rcu_read_unlock(); |
ce662b44 JB |
1396 | } |
1397 | ||
0a1cb809 JB |
1398 | static int find_highest_prio_tid(unsigned long tids) |
1399 | { | |
1400 | /* lower 3 TIDs aren't ordered perfectly */ | |
1401 | if (tids & 0xF8) | |
1402 | return fls(tids) - 1; | |
1403 | /* TID 0 is BE just like TID 3 */ | |
1404 | if (tids & BIT(0)) | |
1405 | return 0; | |
1406 | return fls(tids) - 1; | |
1407 | } | |
1408 | ||
0ead2510 EG |
1409 | /* Indicates if the MORE_DATA bit should be set in the last |
1410 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1411 | * Note that driver_release_tids is relevant only if | |
1412 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1413 | */ | |
1414 | static bool | |
1415 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1416 | enum ieee80211_frame_release_type reason, | |
1417 | unsigned long driver_release_tids) | |
1418 | { | |
1419 | int ac; | |
1420 | ||
1421 | /* If the driver has data on more than one TID then | |
1422 | * certainly there's more data if we release just a | |
1423 | * single frame now (from a single TID). This will | |
1424 | * only happen for PS-Poll. | |
1425 | */ | |
1426 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1427 | hweight16(driver_release_tids) > 1) | |
1428 | return true; | |
1429 | ||
1430 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
f438ceb8 | 1431 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
0ead2510 EG |
1432 | continue; |
1433 | ||
1434 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1435 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1436 | return true; | |
1437 | } | |
1438 | ||
1439 | return false; | |
1440 | } | |
1441 | ||
47086fc5 | 1442 | static void |
0ead2510 EG |
1443 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1444 | enum ieee80211_frame_release_type reason, | |
1445 | struct sk_buff_head *frames, | |
1446 | unsigned long *driver_release_tids) | |
af818581 JB |
1447 | { |
1448 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1449 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1450 | int ac; |
948d887d | 1451 | |
f9f760b4 | 1452 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1453 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1454 | unsigned long tids; |
1455 | ||
f438ceb8 | 1456 | if (ignored_acs & ieee80211_ac_to_qos_mask[ac]) |
948d887d JB |
1457 | continue; |
1458 | ||
4049e09a JB |
1459 | tids = ieee80211_tids_for_ac(ac); |
1460 | ||
f9f760b4 JB |
1461 | /* if we already have frames from software, then we can't also |
1462 | * release from hardware queues | |
1463 | */ | |
0ead2510 EG |
1464 | if (skb_queue_empty(frames)) { |
1465 | *driver_release_tids |= | |
1466 | sta->driver_buffered_tids & tids; | |
1467 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1468 | } |
948d887d | 1469 | |
0ead2510 | 1470 | if (!*driver_release_tids) { |
f9f760b4 JB |
1471 | struct sk_buff *skb; |
1472 | ||
1473 | while (n_frames > 0) { | |
1474 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1475 | if (!skb) { | |
1476 | skb = skb_dequeue( | |
1477 | &sta->ps_tx_buf[ac]); | |
1478 | if (skb) | |
1479 | local->total_ps_buffered--; | |
1480 | } | |
1481 | if (!skb) | |
1482 | break; | |
1483 | n_frames--; | |
0ead2510 | 1484 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1485 | } |
4049e09a | 1486 | } |
948d887d | 1487 | |
0ead2510 EG |
1488 | /* If we have more frames buffered on this AC, then abort the |
1489 | * loop since we can't send more data from other ACs before | |
1490 | * the buffered frames from this. | |
f9f760b4 | 1491 | */ |
948d887d | 1492 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1493 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1494 | break; |
af818581 | 1495 | } |
0ead2510 EG |
1496 | } |
1497 | ||
1498 | static void | |
1499 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1500 | int n_frames, u8 ignored_acs, | |
1501 | enum ieee80211_frame_release_type reason) | |
1502 | { | |
1503 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1504 | struct ieee80211_local *local = sdata->local; | |
1505 | unsigned long driver_release_tids = 0; | |
1506 | struct sk_buff_head frames; | |
1507 | bool more_data; | |
1508 | ||
1509 | /* Service or PS-Poll period starts */ | |
1510 | set_sta_flag(sta, WLAN_STA_SP); | |
1511 | ||
1512 | __skb_queue_head_init(&frames); | |
1513 | ||
1514 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1515 | &frames, &driver_release_tids); | |
1516 | ||
1517 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1518 | ||
1a57081a | 1519 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1520 | driver_release_tids = |
1521 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1522 | |
f9f760b4 | 1523 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
f438ceb8 | 1524 | int tid, ac; |
af818581 JB |
1525 | |
1526 | /* | |
ce662b44 JB |
1527 | * For PS-Poll, this can only happen due to a race condition |
1528 | * when we set the TIM bit and the station notices it, but | |
1529 | * before it can poll for the frame we expire it. | |
1530 | * | |
1531 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1532 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1533 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1534 | * more than the value specified in the Max SP Length field | |
1535 | * in the QoS Capability element from delivery-enabled ACs, | |
1536 | * that are destined for the non-AP STA. | |
1537 | * | |
1538 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1539 | */ |
af818581 | 1540 | |
ce662b44 | 1541 | /* This will evaluate to 1, 3, 5 or 7. */ |
f438ceb8 | 1542 | for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) |
d7f84244 EG |
1543 | if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac])) |
1544 | break; | |
f438ceb8 | 1545 | tid = 7 - 2 * ac; |
af818581 | 1546 | |
0ead2510 | 1547 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1548 | } else if (!driver_release_tids) { |
47086fc5 JB |
1549 | struct sk_buff_head pending; |
1550 | struct sk_buff *skb; | |
40b96408 JB |
1551 | int num = 0; |
1552 | u16 tids = 0; | |
b77cf4f8 | 1553 | bool need_null = false; |
af818581 | 1554 | |
47086fc5 | 1555 | skb_queue_head_init(&pending); |
af818581 | 1556 | |
47086fc5 JB |
1557 | while ((skb = __skb_dequeue(&frames))) { |
1558 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1559 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1560 | u8 *qoshdr = NULL; |
1561 | ||
1562 | num++; | |
af818581 | 1563 | |
47086fc5 JB |
1564 | /* |
1565 | * Tell TX path to send this frame even though the | |
1566 | * STA may still remain is PS mode after this frame | |
1567 | * exchange. | |
1568 | */ | |
6b127c71 SM |
1569 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1570 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1571 | |
1572 | /* | |
1573 | * Use MoreData flag to indicate whether there are | |
1574 | * more buffered frames for this STA | |
1575 | */ | |
24b9c373 | 1576 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1577 | hdr->frame_control |= |
1578 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1579 | else |
1580 | hdr->frame_control &= | |
1581 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1582 | |
40b96408 JB |
1583 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1584 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1585 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1586 | ||
b77cf4f8 | 1587 | tids |= BIT(skb->priority); |
52a3f20c | 1588 | |
b77cf4f8 JB |
1589 | __skb_queue_tail(&pending, skb); |
1590 | ||
1591 | /* end service period after last frame or add one */ | |
1592 | if (!skb_queue_empty(&frames)) | |
1593 | continue; | |
1594 | ||
1595 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1596 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1597 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1598 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1599 | break; |
52a3f20c | 1600 | } |
deeaee19 | 1601 | |
b77cf4f8 JB |
1602 | /* For uAPSD, things are a bit more complicated. If the |
1603 | * last frame has a QoS header (i.e. is a QoS-data or | |
1604 | * QoS-nulldata frame) then just set the EOSP bit there | |
1605 | * and be done. | |
1606 | * If the frame doesn't have a QoS header (which means | |
1607 | * it should be a bufferable MMPDU) then we can't set | |
1608 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1609 | * frame to the list to send it after the MMPDU. | |
1610 | * | |
1611 | * Note that this code is only in the mac80211-release | |
1612 | * code path, we assume that the driver will not buffer | |
1613 | * anything but QoS-data frames, or if it does, will | |
1614 | * create the QoS-nulldata frame by itself if needed. | |
1615 | * | |
1616 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1617 | */ | |
1618 | if (qoshdr) { | |
1619 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1620 | |
b77cf4f8 JB |
1621 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1622 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1623 | } else { | |
1624 | /* The standard isn't completely clear on this | |
1625 | * as it says the more-data bit should be set | |
1626 | * if there are more BUs. The QoS-Null frame | |
1627 | * we're about to send isn't buffered yet, we | |
1628 | * only create it below, but let's pretend it | |
1629 | * was buffered just in case some clients only | |
1630 | * expect more-data=0 when eosp=1. | |
1631 | */ | |
1632 | hdr->frame_control |= | |
1633 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1634 | need_null = true; | |
1635 | num++; | |
1636 | } | |
1637 | break; | |
47086fc5 | 1638 | } |
af818581 | 1639 | |
40b96408 JB |
1640 | drv_allow_buffered_frames(local, sta, tids, num, |
1641 | reason, more_data); | |
1642 | ||
47086fc5 | 1643 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1644 | |
b77cf4f8 JB |
1645 | if (need_null) |
1646 | ieee80211_send_null_response( | |
0ead2510 EG |
1647 | sta, find_highest_prio_tid(tids), |
1648 | reason, false, false); | |
b77cf4f8 | 1649 | |
c868cb35 | 1650 | sta_info_recalc_tim(sta); |
af818581 | 1651 | } else { |
ba8c3d6f FF |
1652 | int tid; |
1653 | ||
af818581 | 1654 | /* |
4049e09a JB |
1655 | * We need to release a frame that is buffered somewhere in the |
1656 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1657 | * Note that the driver also has to check the number of frames |
1658 | * on the TIDs we're releasing from - if there are more than | |
1659 | * n_frames it has to set the more-data bit (if we didn't ask | |
1660 | * it to set it anyway due to other buffered frames); if there | |
1661 | * are fewer than n_frames it has to make sure to adjust that | |
1662 | * to allow the service period to end properly. | |
4049e09a JB |
1663 | */ |
1664 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1665 | n_frames, reason, more_data); |
4049e09a JB |
1666 | |
1667 | /* | |
1668 | * Note that we don't recalculate the TIM bit here as it would | |
1669 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1670 | * that the TID(s) became empty before returning here from the |
4049e09a | 1671 | * release function. |
f9f760b4 | 1672 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1673 | * became empty or we find that a txq became empty, we'll do the |
1674 | * TIM recalculation. | |
af818581 | 1675 | */ |
ba8c3d6f FF |
1676 | |
1677 | if (!sta->sta.txq[0]) | |
1678 | return; | |
1679 | ||
1680 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
83843c80 | 1681 | if (!(driver_release_tids & BIT(tid)) || |
1e1430d5 | 1682 | txq_has_queue(sta->sta.txq[tid])) |
ba8c3d6f FF |
1683 | continue; |
1684 | ||
1685 | sta_info_recalc_tim(sta); | |
1686 | break; | |
1687 | } | |
af818581 JB |
1688 | } |
1689 | } | |
1690 | ||
47086fc5 JB |
1691 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1692 | { | |
1693 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1694 | ||
1695 | /* | |
1696 | * If all ACs are delivery-enabled then we should reply | |
1697 | * from any of them, if only some are enabled we reply | |
1698 | * only from the non-enabled ones. | |
1699 | */ | |
1700 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1701 | ignore_for_response = 0; | |
1702 | ||
1703 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1704 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1705 | } | |
1706 | ||
1707 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1708 | { | |
1709 | int n_frames = sta->sta.max_sp; | |
1710 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1711 | ||
1712 | /* | |
1713 | * If we ever grow support for TSPEC this might happen if | |
1714 | * the TSPEC update from hostapd comes in between a trigger | |
1715 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1716 | * actually getting called. | |
1717 | */ | |
1718 | if (!delivery_enabled) | |
1719 | return; | |
1720 | ||
47086fc5 JB |
1721 | switch (sta->sta.max_sp) { |
1722 | case 1: | |
1723 | n_frames = 2; | |
1724 | break; | |
1725 | case 2: | |
1726 | n_frames = 4; | |
1727 | break; | |
1728 | case 3: | |
1729 | n_frames = 6; | |
1730 | break; | |
1731 | case 0: | |
1732 | /* XXX: what is a good value? */ | |
13a8098a | 1733 | n_frames = 128; |
47086fc5 JB |
1734 | break; |
1735 | } | |
1736 | ||
1737 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1738 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1739 | } | |
1740 | ||
af818581 JB |
1741 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1742 | struct ieee80211_sta *pubsta, bool block) | |
1743 | { | |
1744 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1745 | ||
b5878a2d JB |
1746 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1747 | ||
5ac2e350 | 1748 | if (block) { |
c2c98fde | 1749 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1750 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1751 | return; |
1752 | } | |
1753 | ||
1754 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1755 | return; | |
1756 | ||
1757 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1758 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1759 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1760 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1761 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1762 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1763 | /* must be asleep in this case */ | |
1764 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1765 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1766 | } else { | |
1767 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1768 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1769 | } |
af818581 JB |
1770 | } |
1771 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1772 | |
e943789e | 1773 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1774 | { |
1775 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1776 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1777 | |
1778 | trace_api_eosp(local, pubsta); | |
1779 | ||
e943789e | 1780 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1781 | } |
e943789e | 1782 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1783 | |
0ead2510 EG |
1784 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1785 | { | |
1786 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1787 | enum ieee80211_frame_release_type reason; | |
1788 | bool more_data; | |
1789 | ||
1790 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1791 | ||
1792 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1793 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1794 | reason, 0); | |
1795 | ||
1796 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1797 | } | |
1798 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1799 | ||
042ec453 JB |
1800 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1801 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1802 | { |
1803 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1804 | ||
5a306f58 | 1805 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1806 | return; |
1807 | ||
1b000789 JB |
1808 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1809 | ||
948d887d JB |
1810 | if (buffered) |
1811 | set_bit(tid, &sta->driver_buffered_tids); | |
1812 | else | |
1813 | clear_bit(tid, &sta->driver_buffered_tids); | |
1814 | ||
c868cb35 | 1815 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1816 | } |
042ec453 | 1817 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1818 | |
83d5cc01 JB |
1819 | int sta_info_move_state(struct sta_info *sta, |
1820 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1821 | { |
8bf11d8d | 1822 | might_sleep(); |
d9a7ddb0 JB |
1823 | |
1824 | if (sta->sta_state == new_state) | |
1825 | return 0; | |
1826 | ||
f09603a2 JB |
1827 | /* check allowed transitions first */ |
1828 | ||
1829 | switch (new_state) { | |
1830 | case IEEE80211_STA_NONE: | |
1831 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1832 | return -EINVAL; | |
1833 | break; | |
1834 | case IEEE80211_STA_AUTH: | |
1835 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1836 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1837 | return -EINVAL; | |
1838 | break; | |
1839 | case IEEE80211_STA_ASSOC: | |
1840 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1841 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1842 | return -EINVAL; | |
1843 | break; | |
1844 | case IEEE80211_STA_AUTHORIZED: | |
1845 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1846 | return -EINVAL; | |
1847 | break; | |
1848 | default: | |
1849 | WARN(1, "invalid state %d", new_state); | |
1850 | return -EINVAL; | |
1851 | } | |
1852 | ||
bdcbd8e0 JB |
1853 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1854 | sta->sta.addr, new_state); | |
f09603a2 JB |
1855 | |
1856 | /* | |
1857 | * notify the driver before the actual changes so it can | |
1858 | * fail the transition | |
1859 | */ | |
1860 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1861 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1862 | sta->sta_state, new_state); | |
1863 | if (err) | |
1864 | return err; | |
1865 | } | |
1866 | ||
1867 | /* reflect the change in all state variables */ | |
1868 | ||
d9a7ddb0 JB |
1869 | switch (new_state) { |
1870 | case IEEE80211_STA_NONE: | |
1871 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1872 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1873 | break; |
1874 | case IEEE80211_STA_AUTH: | |
a7201a6c | 1875 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 1876 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 1877 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 1878 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1879 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1880 | if (!sta->sta.support_p2p_ps) |
1881 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 1882 | } |
d9a7ddb0 JB |
1883 | break; |
1884 | case IEEE80211_STA_ASSOC: | |
29623892 | 1885 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1886 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1887 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1888 | if (!sta->sta.support_p2p_ps) |
1889 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 1890 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
72f15d53 | 1891 | ieee80211_vif_dec_num_mcast(sta->sdata); |
d9a7ddb0 | 1892 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1893 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 1894 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 1895 | } |
d9a7ddb0 JB |
1896 | break; |
1897 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1898 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
72f15d53 | 1899 | ieee80211_vif_inc_num_mcast(sta->sdata); |
d9a7ddb0 | 1900 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1901 | ieee80211_check_fast_xmit(sta); |
49ddf8e6 | 1902 | ieee80211_check_fast_rx(sta); |
f09603a2 | 1903 | } |
d9a7ddb0 JB |
1904 | break; |
1905 | default: | |
f09603a2 | 1906 | break; |
d9a7ddb0 JB |
1907 | } |
1908 | ||
d9a7ddb0 JB |
1909 | sta->sta_state = new_state; |
1910 | ||
1911 | return 0; | |
1912 | } | |
687da132 EG |
1913 | |
1914 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1915 | { | |
1916 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1917 | u8 rx_streams; | |
1918 | ||
1919 | if (!sta->sta.ht_cap.ht_supported) | |
1920 | return 1; | |
1921 | ||
1922 | if (sta->sta.vht_cap.vht_supported) { | |
1923 | int i; | |
1924 | u16 tx_mcs_map = | |
1925 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1926 | ||
1927 | for (i = 7; i >= 0; i--) | |
1928 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1929 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1930 | return i + 1; | |
1931 | } | |
1932 | ||
1933 | if (ht_cap->mcs.rx_mask[3]) | |
1934 | rx_streams = 4; | |
1935 | else if (ht_cap->mcs.rx_mask[2]) | |
1936 | rx_streams = 3; | |
1937 | else if (ht_cap->mcs.rx_mask[1]) | |
1938 | rx_streams = 2; | |
1939 | else | |
1940 | rx_streams = 1; | |
1941 | ||
1942 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1943 | return rx_streams; | |
1944 | ||
1945 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1946 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1947 | } | |
b7ffbd7e | 1948 | |
c9c5962b JB |
1949 | static struct ieee80211_sta_rx_stats * |
1950 | sta_get_last_rx_stats(struct sta_info *sta) | |
1951 | { | |
1952 | struct ieee80211_sta_rx_stats *stats = &sta->rx_stats; | |
1953 | struct ieee80211_local *local = sta->local; | |
1954 | int cpu; | |
1955 | ||
1956 | if (!ieee80211_hw_check(&local->hw, USES_RSS)) | |
1957 | return stats; | |
1958 | ||
1959 | for_each_possible_cpu(cpu) { | |
1960 | struct ieee80211_sta_rx_stats *cpustats; | |
1961 | ||
1962 | cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
1963 | ||
1964 | if (time_after(cpustats->last_rx, stats->last_rx)) | |
1965 | stats = cpustats; | |
1966 | } | |
1967 | ||
1968 | return stats; | |
1969 | } | |
1970 | ||
4f6b1b3d JB |
1971 | static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate, |
1972 | struct rate_info *rinfo) | |
fbd6ff5c | 1973 | { |
dcba665b | 1974 | rinfo->bw = STA_STATS_GET(BW, rate); |
4f6b1b3d | 1975 | |
dcba665b | 1976 | switch (STA_STATS_GET(TYPE, rate)) { |
7f406cd1 | 1977 | case STA_STATS_RATE_TYPE_VHT: |
4f6b1b3d | 1978 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; |
dcba665b JB |
1979 | rinfo->mcs = STA_STATS_GET(VHT_MCS, rate); |
1980 | rinfo->nss = STA_STATS_GET(VHT_NSS, rate); | |
1981 | if (STA_STATS_GET(SGI, rate)) | |
1982 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
1983 | break; |
1984 | case STA_STATS_RATE_TYPE_HT: | |
4f6b1b3d | 1985 | rinfo->flags = RATE_INFO_FLAGS_MCS; |
dcba665b JB |
1986 | rinfo->mcs = STA_STATS_GET(HT_MCS, rate); |
1987 | if (STA_STATS_GET(SGI, rate)) | |
1988 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; | |
7f406cd1 JB |
1989 | break; |
1990 | case STA_STATS_RATE_TYPE_LEGACY: { | |
fbd6ff5c | 1991 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 1992 | u16 brate; |
4f6b1b3d | 1993 | unsigned int shift; |
dcba665b JB |
1994 | int band = STA_STATS_GET(LEGACY_BAND, rate); |
1995 | int rate_idx = STA_STATS_GET(LEGACY_IDX, rate); | |
4f6b1b3d | 1996 | |
dcba665b JB |
1997 | sband = local->hw.wiphy->bands[band]; |
1998 | brate = sband->bitrates[rate_idx].bitrate; | |
4f6b1b3d JB |
1999 | if (rinfo->bw == RATE_INFO_BW_5) |
2000 | shift = 2; | |
2001 | else if (rinfo->bw == RATE_INFO_BW_10) | |
2002 | shift = 1; | |
2003 | else | |
2004 | shift = 0; | |
fbd6ff5c | 2005 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
7f406cd1 JB |
2006 | break; |
2007 | } | |
fbd6ff5c | 2008 | } |
4f6b1b3d JB |
2009 | } |
2010 | ||
a17d93ff | 2011 | static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
4f6b1b3d | 2012 | { |
6aa7de05 | 2013 | u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2014 | |
4f6b1b3d | 2015 | if (rate == STA_STATS_RATE_INVALID) |
a17d93ff BG |
2016 | return -EINVAL; |
2017 | ||
2018 | sta_stats_decode_rate(sta->local, rate, rinfo); | |
2019 | return 0; | |
fbd6ff5c JB |
2020 | } |
2021 | ||
0f9c5a61 JB |
2022 | static void sta_set_tidstats(struct sta_info *sta, |
2023 | struct cfg80211_tid_stats *tidstats, | |
2024 | int tid) | |
2025 | { | |
2026 | struct ieee80211_local *local = sta->local; | |
2027 | ||
2028 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
2029 | unsigned int start; | |
2030 | ||
2031 | do { | |
2032 | start = u64_stats_fetch_begin(&sta->rx_stats.syncp); | |
2033 | tidstats->rx_msdu = sta->rx_stats.msdu[tid]; | |
2034 | } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start)); | |
2035 | ||
2036 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2037 | } | |
2038 | ||
2039 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2040 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
2041 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; | |
2042 | } | |
2043 | ||
2044 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2045 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2046 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
2047 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; | |
2048 | } | |
2049 | ||
2050 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2051 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2052 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
2053 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; | |
2054 | } | |
2055 | } | |
2056 | ||
c9c5962b JB |
2057 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2058 | { | |
2059 | unsigned int start; | |
2060 | u64 value; | |
2061 | ||
2062 | do { | |
2063 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2064 | value = rxstats->bytes; | |
2065 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2066 | ||
2067 | return value; | |
2068 | } | |
2069 | ||
b7ffbd7e JB |
2070 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
2071 | { | |
2072 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2073 | struct ieee80211_local *local = sdata->local; | |
b7ffbd7e | 2074 | u32 thr = 0; |
c9c5962b JB |
2075 | int i, ac, cpu; |
2076 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2077 | ||
2078 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e JB |
2079 | |
2080 | sinfo->generation = sdata->local->sta_generation; | |
2081 | ||
225b8189 JB |
2082 | /* do before driver, so beacon filtering drivers have a |
2083 | * chance to e.g. just add the number of filtered beacons | |
2084 | * (or just modify the value entirely, of course) | |
2085 | */ | |
2086 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2087 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
2088 | ||
2b9a7e1b JB |
2089 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
2090 | ||
319090bf JB |
2091 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
2092 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
2093 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
2094 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
976bd9ef JB |
2095 | BIT(NL80211_STA_INFO_RX_DROP_MISC); |
2096 | ||
2097 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
2098 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
2099 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS); | |
2100 | } | |
b7ffbd7e | 2101 | |
84b00607 | 2102 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
e5a9f8d0 | 2103 | sinfo->inactive_time = |
b8da6b6a | 2104 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2105 | |
319090bf JB |
2106 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
2107 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2108 | sinfo->tx_bytes = 0; |
2109 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2110 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
319090bf | 2111 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2112 | } |
2113 | ||
319090bf | 2114 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2115 | sinfo->tx_packets = 0; |
2116 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2117 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
319090bf | 2118 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2119 | } |
2120 | ||
319090bf JB |
2121 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
2122 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
c9c5962b JB |
2123 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
2124 | ||
2125 | if (sta->pcpu_rx_stats) { | |
2126 | for_each_possible_cpu(cpu) { | |
2127 | struct ieee80211_sta_rx_stats *cpurxs; | |
2128 | ||
2129 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2130 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); | |
2131 | } | |
2132 | } | |
0f9c5a61 | 2133 | |
319090bf | 2134 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2135 | } |
2136 | ||
319090bf | 2137 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 2138 | sinfo->rx_packets = sta->rx_stats.packets; |
c9c5962b JB |
2139 | if (sta->pcpu_rx_stats) { |
2140 | for_each_possible_cpu(cpu) { | |
2141 | struct ieee80211_sta_rx_stats *cpurxs; | |
2142 | ||
2143 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2144 | sinfo->rx_packets += cpurxs->packets; | |
2145 | } | |
2146 | } | |
319090bf | 2147 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2148 | } |
2149 | ||
319090bf | 2150 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 2151 | sinfo->tx_retries = sta->status_stats.retry_count; |
319090bf | 2152 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2153 | } |
2154 | ||
319090bf | 2155 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 2156 | sinfo->tx_failed = sta->status_stats.retry_failed; |
319090bf | 2157 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2158 | } |
2b9a7e1b | 2159 | |
e5a9f8d0 | 2160 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
c9c5962b JB |
2161 | if (sta->pcpu_rx_stats) { |
2162 | for_each_possible_cpu(cpu) { | |
2163 | struct ieee80211_sta_rx_stats *cpurxs; | |
2164 | ||
2165 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
e165bc02 | 2166 | sinfo->rx_dropped_misc += cpurxs->dropped; |
c9c5962b JB |
2167 | } |
2168 | } | |
b7ffbd7e | 2169 | |
225b8189 JB |
2170 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2171 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
2172 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
2173 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
2174 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
2175 | } | |
2176 | ||
30686bf7 JB |
2177 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2178 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
319090bf | 2179 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2180 | sinfo->signal = (s8)last_rxstats->last_signal; |
319090bf | 2181 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2182 | } |
2183 | ||
c9c5962b JB |
2184 | if (!sta->pcpu_rx_stats && |
2185 | !(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { | |
40d9a38a | 2186 | sinfo->signal_avg = |
0be6ed13 | 2187 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
319090bf | 2188 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2189 | } |
b7ffbd7e | 2190 | } |
2b9a7e1b | 2191 | |
c9c5962b JB |
2192 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2193 | * the sta->rx_stats struct, so the check here is fine with and without | |
2194 | * pcpu statistics | |
2195 | */ | |
2196 | if (last_rxstats->chains && | |
319090bf JB |
2197 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2198 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
c9c5962b JB |
2199 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL); |
2200 | if (!sta->pcpu_rx_stats) | |
2201 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
2202 | ||
2203 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2204 | |
b7ffbd7e | 2205 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2206 | sinfo->chain_signal[i] = |
c9c5962b | 2207 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2208 | sinfo->chain_signal_avg[i] = |
0be6ed13 | 2209 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2210 | } |
2211 | } | |
2212 | ||
319090bf | 2213 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
2214 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
2215 | &sinfo->txrate); | |
319090bf | 2216 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2217 | } |
2218 | ||
319090bf | 2219 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
a17d93ff BG |
2220 | if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) |
2221 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); | |
2b9a7e1b | 2222 | } |
b7ffbd7e | 2223 | |
79c892b8 JB |
2224 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
2225 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
2226 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
2227 | ||
0f9c5a61 | 2228 | sta_set_tidstats(sta, tidstats, i); |
79c892b8 JB |
2229 | } |
2230 | ||
b7ffbd7e JB |
2231 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2232 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
2233 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
2234 | BIT(NL80211_STA_INFO_PLID) | | |
2235 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
2236 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
2237 | BIT(NL80211_STA_INFO_PEER_PM) | | |
2238 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e | 2239 | |
433f5bc1 JB |
2240 | sinfo->llid = sta->mesh->llid; |
2241 | sinfo->plid = sta->mesh->plid; | |
2242 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2243 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
319090bf | 2244 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2245 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2246 | } |
433f5bc1 JB |
2247 | sinfo->local_pm = sta->mesh->local_pm; |
2248 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2249 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
b7ffbd7e JB |
2250 | #endif |
2251 | } | |
2252 | ||
2253 | sinfo->bss_param.flags = 0; | |
2254 | if (sdata->vif.bss_conf.use_cts_prot) | |
2255 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2256 | if (sdata->vif.bss_conf.use_short_preamble) | |
2257 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2258 | if (sdata->vif.bss_conf.use_short_slot) | |
2259 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2260 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2261 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2262 | ||
2263 | sinfo->sta_flags.set = 0; | |
2264 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2265 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2266 | BIT(NL80211_STA_FLAG_WME) | | |
2267 | BIT(NL80211_STA_FLAG_MFP) | | |
2268 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2269 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2270 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2271 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2272 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2273 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2274 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2275 | if (sta->sta.wme) |
b7ffbd7e JB |
2276 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2277 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2278 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2279 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2280 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2281 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2282 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2283 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2284 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2285 | ||
3b17fbf8 MA |
2286 | thr = sta_get_expected_throughput(sta); |
2287 | ||
2288 | if (thr != 0) { | |
2289 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); | |
2290 | sinfo->expected_throughput = thr; | |
2291 | } | |
a78b26ff VN |
2292 | |
2293 | if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL)) && | |
2294 | sta->status_stats.ack_signal_filled) { | |
2295 | sinfo->ack_signal = sta->status_stats.last_ack_signal; | |
2296 | sinfo->filled |= BIT_ULL(NL80211_STA_INFO_ACK_SIGNAL); | |
2297 | } | |
cc60dbbf BP |
2298 | |
2299 | if (ieee80211_hw_check(&sta->local->hw, REPORTS_TX_ACK_STATUS) && | |
2300 | !(sinfo->filled & BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG))) { | |
2301 | sinfo->avg_ack_signal = | |
2302 | -(s8)ewma_avg_signal_read( | |
2303 | &sta->status_stats.avg_ack_signal); | |
2304 | sinfo->filled |= | |
2305 | BIT_ULL(NL80211_STA_INFO_DATA_ACK_SIGNAL_AVG); | |
2306 | } | |
3b17fbf8 MA |
2307 | } |
2308 | ||
2309 | u32 sta_get_expected_throughput(struct sta_info *sta) | |
2310 | { | |
2311 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2312 | struct ieee80211_local *local = sdata->local; | |
2313 | struct rate_control_ref *ref = NULL; | |
2314 | u32 thr = 0; | |
2315 | ||
2316 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
2317 | ref = local->rate_ctrl; | |
2318 | ||
b7ffbd7e JB |
2319 | /* check if the driver has a SW RC implementation */ |
2320 | if (ref && ref->ops->get_expected_throughput) | |
2321 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2322 | else | |
4fdbc67a | 2323 | thr = drv_get_expected_throughput(local, sta); |
b7ffbd7e | 2324 | |
3b17fbf8 | 2325 | return thr; |
b7ffbd7e | 2326 | } |
b8da6b6a JB |
2327 | |
2328 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2329 | { | |
c9c5962b JB |
2330 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2331 | ||
2332 | if (time_after(stats->last_rx, sta->status_stats.last_ack)) | |
2333 | return stats->last_rx; | |
b8da6b6a JB |
2334 | return sta->status_stats.last_ack; |
2335 | } | |
484a54c2 THJ |
2336 | |
2337 | static void sta_update_codel_params(struct sta_info *sta, u32 thr) | |
2338 | { | |
2339 | if (!sta->sdata->local->ops->wake_tx_queue) | |
2340 | return; | |
2341 | ||
2342 | if (thr && thr < STA_SLOW_THRESHOLD * sta->local->num_sta) { | |
2343 | sta->cparams.target = MS2TIME(50); | |
2344 | sta->cparams.interval = MS2TIME(300); | |
2345 | sta->cparams.ecn = false; | |
2346 | } else { | |
2347 | sta->cparams.target = MS2TIME(20); | |
2348 | sta->cparams.interval = MS2TIME(100); | |
2349 | sta->cparams.ecn = true; | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, | |
2354 | u32 thr) | |
2355 | { | |
2356 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
2357 | ||
2358 | sta_update_codel_params(sta, thr); | |
2359 | } |