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 |
f59374eb | 5 | * Copyright (C) 2015 - 2016 Intel Deutschland GmbH |
f0706e82 JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/init.h> | |
888d04df | 14 | #include <linux/etherdevice.h> |
f0706e82 JB |
15 | #include <linux/netdevice.h> |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/if_arp.h> | |
0d174406 | 20 | #include <linux/timer.h> |
d0709a65 | 21 | #include <linux/rtnetlink.h> |
f0706e82 JB |
22 | |
23 | #include <net/mac80211.h> | |
24 | #include "ieee80211_i.h" | |
24487981 | 25 | #include "driver-ops.h" |
2c8dccc7 | 26 | #include "rate.h" |
f0706e82 | 27 | #include "sta_info.h" |
e9f207f0 | 28 | #include "debugfs_sta.h" |
ee385855 | 29 | #include "mesh.h" |
ce662b44 | 30 | #include "wme.h" |
f0706e82 | 31 | |
d0709a65 JB |
32 | /** |
33 | * DOC: STA information lifetime rules | |
34 | * | |
35 | * STA info structures (&struct sta_info) are managed in a hash table | |
36 | * for faster lookup and a list for iteration. They are managed using | |
37 | * RCU, i.e. access to the list and hash table is protected by RCU. | |
38 | * | |
34e89507 JB |
39 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
40 | * owns that structure. It must then insert it into the hash table using | |
41 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter | |
42 | * case (which acquires an rcu read section but must not be called from | |
43 | * within one) will the pointer still be valid after the call. Note that | |
44 | * the caller may not do much with the STA info before inserting it, in | |
45 | * particular, it may not start any mesh peer link management or add | |
46 | * encryption keys. | |
93e5deb1 JB |
47 | * |
48 | * When the insertion fails (sta_info_insert()) returns non-zero), the | |
49 | * structure will have been freed by sta_info_insert()! | |
d0709a65 | 50 | * |
34e89507 | 51 | * Station entries are added by mac80211 when you establish a link with a |
7e189a12 LR |
52 | * peer. This means different things for the different type of interfaces |
53 | * we support. For a regular station this mean we add the AP sta when we | |
25985edc | 54 | * receive an association response from the AP. For IBSS this occurs when |
34e89507 | 55 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
25985edc | 56 | * the peer immediately upon device open. When using AP mode we add stations |
34e89507 | 57 | * for each respective station upon request from userspace through nl80211. |
7e189a12 | 58 | * |
34e89507 JB |
59 | * In order to remove a STA info structure, various sta_info_destroy_*() |
60 | * calls are available. | |
d0709a65 | 61 | * |
34e89507 JB |
62 | * There is no concept of ownership on a STA entry, each structure is |
63 | * owned by the global hash table/list until it is removed. All users of | |
64 | * the structure need to be RCU protected so that the structure won't be | |
65 | * freed before they are done using it. | |
d0709a65 | 66 | */ |
f0706e82 | 67 | |
7bedd0cf JB |
68 | static const struct rhashtable_params sta_rht_params = { |
69 | .nelem_hint = 3, /* start small */ | |
b6bf8c68 | 70 | .insecure_elasticity = true, /* Disable chain-length checks. */ |
caf22d31 | 71 | .automatic_shrinking = true, |
7bedd0cf | 72 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 73 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf JB |
74 | .key_len = ETH_ALEN, |
75 | .hashfn = sta_addr_hash, | |
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 | { |
7bedd0cf JB |
83 | return rhashtable_remove_fast(&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 | ||
d0709a65 | 160 | /* protected by RCU */ |
abe60632 JB |
161 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
162 | const u8 *addr) | |
f0706e82 | 163 | { |
abe60632 | 164 | struct ieee80211_local *local = sdata->local; |
60f4b626 JB |
165 | struct sta_info *sta; |
166 | struct rhash_head *tmp; | |
167 | const struct bucket_table *tbl; | |
f0706e82 | 168 | |
60f4b626 JB |
169 | rcu_read_lock(); |
170 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
f0706e82 | 171 | |
60f4b626 JB |
172 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
173 | if (sta->sdata == sdata) { | |
174 | rcu_read_unlock(); | |
175 | /* this is safe as the caller must already hold | |
176 | * another rcu read section or the mutex | |
177 | */ | |
178 | return sta; | |
179 | } | |
180 | } | |
181 | rcu_read_unlock(); | |
182 | return NULL; | |
43ba7e95 JB |
183 | } |
184 | ||
0e5ded5a FF |
185 | /* |
186 | * Get sta info either from the specified interface | |
187 | * or from one of its vlans | |
188 | */ | |
189 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
190 | const u8 *addr) | |
191 | { | |
192 | struct ieee80211_local *local = sdata->local; | |
193 | struct sta_info *sta; | |
7bedd0cf JB |
194 | struct rhash_head *tmp; |
195 | const struct bucket_table *tbl; | |
0e5ded5a | 196 | |
7bedd0cf JB |
197 | rcu_read_lock(); |
198 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
199 | ||
200 | for_each_sta_info(local, tbl, addr, sta, tmp) { | |
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 | { |
62b14b24 JB |
266 | return rhashtable_insert_fast(&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 = | |
318 | alloc_percpu(struct ieee80211_sta_rx_stats); | |
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; | |
333 | spin_lock_init(&sta->mesh->plink_lock); | |
334 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
335 | !sdata->u.mesh.user_mpm) | |
336 | init_timer(&sta->mesh->plink_timer); | |
337 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; | |
338 | } | |
87f59c70 | 339 | #endif |
07346f81 | 340 | |
ac100ce5 | 341 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 342 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
d0709a65 JB |
343 | sta->local = local; |
344 | sta->sdata = sdata; | |
e5a9f8d0 | 345 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 346 | |
0f9c5a61 JB |
347 | u64_stats_init(&sta->rx_stats.syncp); |
348 | ||
71ec375c JB |
349 | sta->sta_state = IEEE80211_STA_NONE; |
350 | ||
b6da911b LK |
351 | /* Mark TID as unreserved */ |
352 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
353 | ||
84b00607 | 354 | sta->last_connected = ktime_get_seconds(); |
0be6ed13 JB |
355 | ewma_signal_init(&sta->rx_stats_avg.signal); |
356 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++) | |
357 | ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]); | |
541a45a1 | 358 | |
ba8c3d6f FF |
359 | if (local->ops->wake_tx_queue) { |
360 | void *txq_data; | |
361 | int size = sizeof(struct txq_info) + | |
362 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
363 | ||
364 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
365 | if (!txq_data) | |
366 | goto free; | |
367 | ||
368 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
369 | struct txq_info *txq = txq_data + i * size; | |
370 | ||
fa962b92 | 371 | ieee80211_txq_init(sdata, sta, txq, i); |
ba8c3d6f | 372 | } |
abfbc3af | 373 | } |
f0706e82 | 374 | |
ba8c3d6f FF |
375 | if (sta_prepare_rate_control(local, sta, gfp)) |
376 | goto free_txq; | |
377 | ||
5a306f58 | 378 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
a622ab72 JB |
379 | /* |
380 | * timer_to_tid must be initialized with identity mapping | |
381 | * to enable session_timer's data differentiation. See | |
382 | * sta_rx_agg_session_timer_expired for usage. | |
383 | */ | |
16c5f15c | 384 | sta->timer_to_tid[i] = i; |
16c5f15c | 385 | } |
948d887d JB |
386 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
387 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
388 | skb_queue_head_init(&sta->tx_filtered[i]); | |
389 | } | |
73651ee6 | 390 | |
5a306f58 | 391 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 392 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 393 | |
af0ed69b | 394 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
395 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
396 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
397 | struct ieee80211_supported_band *sband = | |
ba8c3d6f | 398 | hw->wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
687da132 EG |
399 | u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
400 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
401 | /* | |
402 | * Assume that hostapd advertises our caps in the beacon and | |
403 | * this is the known_smps_mode for a station that just assciated | |
404 | */ | |
405 | switch (smps) { | |
406 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
407 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
408 | break; | |
409 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
410 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
411 | break; | |
412 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
413 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
414 | break; | |
415 | default: | |
416 | WARN_ON(1); | |
417 | } | |
418 | } | |
af0ed69b | 419 | |
6e0456b5 FF |
420 | sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; |
421 | ||
bdcbd8e0 | 422 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 423 | |
abfbc3af | 424 | return sta; |
ba8c3d6f FF |
425 | |
426 | free_txq: | |
427 | if (sta->sta.txq[0]) | |
428 | kfree(to_txq_info(sta->sta.txq[0])); | |
429 | free: | |
433f5bc1 JB |
430 | #ifdef CONFIG_MAC80211_MESH |
431 | kfree(sta->mesh); | |
432 | #endif | |
ba8c3d6f FF |
433 | kfree(sta); |
434 | return NULL; | |
73651ee6 JB |
435 | } |
436 | ||
8c71df7a | 437 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 438 | { |
34e89507 | 439 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 440 | |
03e4497e JB |
441 | /* |
442 | * Can't be a WARN_ON because it can be triggered through a race: | |
443 | * something inserts a STA (on one CPU) without holding the RTNL | |
444 | * and another CPU turns off the net device. | |
445 | */ | |
8c71df7a GE |
446 | if (unlikely(!ieee80211_sdata_running(sdata))) |
447 | return -ENETDOWN; | |
03e4497e | 448 | |
b203ca39 | 449 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
450 | is_multicast_ether_addr(sta->sta.addr))) |
451 | return -EINVAL; | |
452 | ||
31104891 JB |
453 | /* Strictly speaking this isn't necessary as we hold the mutex, but |
454 | * the rhashtable code can't really deal with that distinction. We | |
455 | * do require the mutex for correctness though. | |
456 | */ | |
457 | rcu_read_lock(); | |
458 | lockdep_assert_held(&sdata->local->sta_mtx); | |
459 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
460 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
461 | rcu_read_unlock(); | |
462 | return -ENOTUNIQ; | |
463 | } | |
464 | rcu_read_unlock(); | |
465 | ||
8c71df7a GE |
466 | return 0; |
467 | } | |
468 | ||
f09603a2 JB |
469 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
470 | struct ieee80211_sub_if_data *sdata, | |
471 | struct sta_info *sta) | |
472 | { | |
473 | enum ieee80211_sta_state state; | |
474 | int err = 0; | |
475 | ||
476 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
477 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
478 | if (err) | |
479 | break; | |
480 | } | |
481 | ||
482 | if (!err) { | |
a4ec45a4 JB |
483 | /* |
484 | * Drivers using legacy sta_add/sta_remove callbacks only | |
485 | * get uploaded set to true after sta_add is called. | |
486 | */ | |
487 | if (!local->ops->sta_add) | |
488 | sta->uploaded = true; | |
f09603a2 JB |
489 | return 0; |
490 | } | |
491 | ||
492 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
493 | sdata_info(sdata, |
494 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
495 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
496 | err = 0; |
497 | } | |
498 | ||
499 | /* unwind on error */ | |
500 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
501 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
502 | ||
503 | return err; | |
504 | } | |
505 | ||
8c71df7a GE |
506 | /* |
507 | * should be called with sta_mtx locked | |
508 | * this function replaces the mutex lock | |
509 | * with a RCU lock | |
510 | */ | |
4d33960b | 511 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
512 | { |
513 | struct ieee80211_local *local = sta->local; | |
514 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 515 | struct station_info *sinfo; |
8c71df7a GE |
516 | int err = 0; |
517 | ||
518 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 519 | |
0ef049dc AB |
520 | sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL); |
521 | if (!sinfo) { | |
522 | err = -ENOMEM; | |
523 | goto out_err; | |
524 | } | |
525 | ||
7852e361 JB |
526 | /* check if STA exists already */ |
527 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
528 | err = -EEXIST; | |
529 | goto out_err; | |
4d33960b | 530 | } |
32bfd35d | 531 | |
7852e361 JB |
532 | local->num_sta++; |
533 | local->sta_generation++; | |
534 | smp_mb(); | |
4d33960b | 535 | |
5108ca82 JB |
536 | /* simplify things and don't accept BA sessions yet */ |
537 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
538 | ||
7852e361 | 539 | /* make the station visible */ |
62b14b24 JB |
540 | err = sta_info_hash_add(local, sta); |
541 | if (err) | |
542 | goto out_drop_sta; | |
83d5cc01 | 543 | |
2bad7748 | 544 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 545 | |
5108ca82 JB |
546 | /* notify driver */ |
547 | err = sta_info_insert_drv_state(local, sdata, sta); | |
548 | if (err) | |
549 | goto out_remove; | |
550 | ||
7852e361 | 551 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
552 | /* accept BA sessions now */ |
553 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 554 | |
7852e361 JB |
555 | ieee80211_sta_debugfs_add(sta); |
556 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 557 | |
0ef049dc AB |
558 | sinfo->generation = local->sta_generation; |
559 | cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
560 | kfree(sinfo); | |
d0709a65 | 561 | |
bdcbd8e0 | 562 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 563 | |
34e89507 JB |
564 | /* move reference to rcu-protected */ |
565 | rcu_read_lock(); | |
566 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 567 | |
73651ee6 JB |
568 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
569 | mesh_accept_plinks_update(sdata); | |
570 | ||
8c71df7a | 571 | return 0; |
5108ca82 JB |
572 | out_remove: |
573 | sta_info_hash_del(local, sta); | |
574 | list_del_rcu(&sta->list); | |
62b14b24 | 575 | out_drop_sta: |
5108ca82 JB |
576 | local->num_sta--; |
577 | synchronize_net(); | |
578 | __cleanup_single_sta(sta); | |
4d33960b JB |
579 | out_err: |
580 | mutex_unlock(&local->sta_mtx); | |
ea32f065 | 581 | kfree(sinfo); |
4d33960b JB |
582 | rcu_read_lock(); |
583 | return err; | |
8c71df7a GE |
584 | } |
585 | ||
586 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
587 | { | |
588 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 589 | int err; |
8c71df7a | 590 | |
4d33960b JB |
591 | might_sleep(); |
592 | ||
31104891 JB |
593 | mutex_lock(&local->sta_mtx); |
594 | ||
8c71df7a GE |
595 | err = sta_info_insert_check(sta); |
596 | if (err) { | |
31104891 | 597 | mutex_unlock(&local->sta_mtx); |
8c71df7a GE |
598 | rcu_read_lock(); |
599 | goto out_free; | |
600 | } | |
601 | ||
4d33960b | 602 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
603 | if (err) |
604 | goto out_free; | |
605 | ||
73651ee6 | 606 | return 0; |
93e5deb1 | 607 | out_free: |
d9a7ddb0 | 608 | sta_info_free(local, sta); |
93e5deb1 | 609 | return err; |
f0706e82 JB |
610 | } |
611 | ||
34e89507 JB |
612 | int sta_info_insert(struct sta_info *sta) |
613 | { | |
614 | int err = sta_info_insert_rcu(sta); | |
615 | ||
616 | rcu_read_unlock(); | |
617 | ||
618 | return err; | |
619 | } | |
620 | ||
d012a605 | 621 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
622 | { |
623 | /* | |
624 | * This format has been mandated by the IEEE specifications, | |
625 | * so this line may not be changed to use the __set_bit() format. | |
626 | */ | |
d012a605 | 627 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
628 | } |
629 | ||
d012a605 | 630 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
631 | { |
632 | /* | |
633 | * This format has been mandated by the IEEE specifications, | |
634 | * so this line may not be changed to use the __clear_bit() format. | |
635 | */ | |
d012a605 | 636 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
637 | } |
638 | ||
3d5839b6 IP |
639 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
640 | { | |
641 | /* | |
642 | * This format has been mandated by the IEEE specifications, | |
643 | * so this line may not be changed to use the test_bit() format. | |
644 | */ | |
645 | return tim[id / 8] & (1 << (id % 8)); | |
646 | } | |
647 | ||
948d887d | 648 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 649 | { |
948d887d JB |
650 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
651 | switch (ac) { | |
652 | case IEEE80211_AC_VO: | |
653 | return BIT(6) | BIT(7); | |
654 | case IEEE80211_AC_VI: | |
655 | return BIT(4) | BIT(5); | |
656 | case IEEE80211_AC_BE: | |
657 | return BIT(0) | BIT(3); | |
658 | case IEEE80211_AC_BK: | |
659 | return BIT(1) | BIT(2); | |
660 | default: | |
661 | WARN_ON(1); | |
662 | return 0; | |
d0709a65 | 663 | } |
004c872e JB |
664 | } |
665 | ||
9b7a86f3 | 666 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 667 | { |
c868cb35 | 668 | struct ieee80211_local *local = sta->local; |
d012a605 | 669 | struct ps_data *ps; |
948d887d JB |
670 | bool indicate_tim = false; |
671 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
672 | int ac; | |
a69bd8e6 | 673 | u16 id = sta->sta.aid; |
d012a605 MP |
674 | |
675 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
676 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
677 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
678 | return; | |
004c872e | 679 | |
d012a605 | 680 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
681 | #ifdef CONFIG_MAC80211_MESH |
682 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
683 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 684 | #endif |
d012a605 | 685 | } else { |
c868cb35 | 686 | return; |
d012a605 | 687 | } |
3e122be0 | 688 | |
c868cb35 | 689 | /* No need to do anything if the driver does all */ |
30686bf7 | 690 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
c868cb35 | 691 | return; |
004c872e | 692 | |
c868cb35 JB |
693 | if (sta->dead) |
694 | goto done; | |
3e122be0 | 695 | |
948d887d JB |
696 | /* |
697 | * If all ACs are delivery-enabled then we should build | |
698 | * the TIM bit for all ACs anyway; if only some are then | |
699 | * we ignore those and build the TIM bit using only the | |
700 | * non-enabled ones. | |
701 | */ | |
702 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
703 | ignore_for_tim = 0; | |
704 | ||
9b7a86f3 JB |
705 | if (ignore_pending) |
706 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
707 | ||
948d887d JB |
708 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
709 | unsigned long tids; | |
3e122be0 | 710 | |
948d887d JB |
711 | if (ignore_for_tim & BIT(ac)) |
712 | continue; | |
713 | ||
714 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
715 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
716 | if (indicate_tim) | |
717 | break; | |
3e122be0 | 718 | |
948d887d JB |
719 | tids = ieee80211_tids_for_ac(ac); |
720 | ||
721 | indicate_tim |= | |
722 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
723 | indicate_tim |= |
724 | sta->txq_buffered_tids & tids; | |
d0709a65 | 725 | } |
004c872e | 726 | |
c868cb35 | 727 | done: |
65f704a5 | 728 | spin_lock_bh(&local->tim_lock); |
004c872e | 729 | |
3d5839b6 IP |
730 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
731 | goto out_unlock; | |
732 | ||
948d887d | 733 | if (indicate_tim) |
d012a605 | 734 | __bss_tim_set(ps->tim, id); |
c868cb35 | 735 | else |
d012a605 | 736 | __bss_tim_clear(ps->tim, id); |
004c872e | 737 | |
9b7a86f3 | 738 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 739 | local->tim_in_locked_section = true; |
948d887d | 740 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
741 | local->tim_in_locked_section = false; |
742 | } | |
3e122be0 | 743 | |
3d5839b6 | 744 | out_unlock: |
65f704a5 | 745 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
746 | } |
747 | ||
9b7a86f3 JB |
748 | void sta_info_recalc_tim(struct sta_info *sta) |
749 | { | |
750 | __sta_info_recalc_tim(sta, false); | |
751 | } | |
752 | ||
cd0b8d89 | 753 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 754 | { |
e039fa4a | 755 | struct ieee80211_tx_info *info; |
f0706e82 JB |
756 | int timeout; |
757 | ||
758 | if (!skb) | |
cd0b8d89 | 759 | return false; |
f0706e82 | 760 | |
e039fa4a | 761 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
762 | |
763 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
764 | timeout = (sta->listen_interval * |
765 | sta->sdata->vif.bss_conf.beacon_int * | |
766 | 32 / 15625) * HZ; | |
f0706e82 JB |
767 | if (timeout < STA_TX_BUFFER_EXPIRE) |
768 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 769 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
770 | } |
771 | ||
772 | ||
948d887d JB |
773 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
774 | struct sta_info *sta, int ac) | |
f0706e82 JB |
775 | { |
776 | unsigned long flags; | |
777 | struct sk_buff *skb; | |
778 | ||
60750397 JB |
779 | /* |
780 | * First check for frames that should expire on the filtered | |
781 | * queue. Frames here were rejected by the driver and are on | |
782 | * a separate queue to avoid reordering with normal PS-buffered | |
783 | * frames. They also aren't accounted for right now in the | |
784 | * total_ps_buffered counter. | |
785 | */ | |
786 | for (;;) { | |
948d887d JB |
787 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
788 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 789 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 790 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
791 | else |
792 | skb = NULL; | |
948d887d | 793 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
794 | |
795 | /* | |
796 | * Frames are queued in order, so if this one | |
797 | * hasn't expired yet we can stop testing. If | |
798 | * we actually reached the end of the queue we | |
799 | * also need to stop, of course. | |
800 | */ | |
801 | if (!skb) | |
802 | break; | |
d4fa14cd | 803 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
804 | } |
805 | ||
806 | /* | |
807 | * Now also check the normal PS-buffered queue, this will | |
808 | * only find something if the filtered queue was emptied | |
809 | * since the filtered frames are all before the normal PS | |
810 | * buffered frames. | |
811 | */ | |
f0706e82 | 812 | for (;;) { |
948d887d JB |
813 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
814 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 815 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 816 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 817 | else |
f0706e82 | 818 | skb = NULL; |
948d887d | 819 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 820 | |
60750397 JB |
821 | /* |
822 | * frames are queued in order, so if this one | |
823 | * hasn't expired yet (or we reached the end of | |
824 | * the queue) we can stop testing | |
825 | */ | |
836341a7 | 826 | if (!skb) |
f0706e82 | 827 | break; |
836341a7 | 828 | |
836341a7 | 829 | local->total_ps_buffered--; |
bdcbd8e0 JB |
830 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
831 | sta->sta.addr); | |
d4fa14cd | 832 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 833 | } |
3393a608 | 834 | |
60750397 JB |
835 | /* |
836 | * Finally, recalculate the TIM bit for this station -- it might | |
837 | * now be clear because the station was too slow to retrieve its | |
838 | * frames. | |
839 | */ | |
840 | sta_info_recalc_tim(sta); | |
841 | ||
842 | /* | |
843 | * Return whether there are any frames still buffered, this is | |
844 | * used to check whether the cleanup timer still needs to run, | |
845 | * if there are no frames we don't need to rearm the timer. | |
846 | */ | |
948d887d JB |
847 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
848 | skb_queue_empty(&sta->tx_filtered[ac])); | |
849 | } | |
850 | ||
851 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
852 | struct sta_info *sta) | |
853 | { | |
854 | bool have_buffered = false; | |
855 | int ac; | |
856 | ||
3f52b7e3 MP |
857 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
858 | if (!sta->sdata->bss && | |
859 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
860 | return false; |
861 | ||
862 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
863 | have_buffered |= | |
864 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
865 | ||
866 | return have_buffered; | |
f0706e82 JB |
867 | } |
868 | ||
d778207b | 869 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 870 | { |
34e89507 JB |
871 | struct ieee80211_local *local; |
872 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 873 | int ret; |
f0706e82 | 874 | |
34e89507 | 875 | might_sleep(); |
f0706e82 | 876 | |
34e89507 JB |
877 | if (!sta) |
878 | return -ENOENT; | |
5bb644a0 | 879 | |
34e89507 JB |
880 | local = sta->local; |
881 | sdata = sta->sdata; | |
f0706e82 | 882 | |
83d5cc01 JB |
883 | lockdep_assert_held(&local->sta_mtx); |
884 | ||
098a6070 JB |
885 | /* |
886 | * Before removing the station from the driver and | |
887 | * rate control, it might still start new aggregation | |
888 | * sessions -- block that to make sure the tear-down | |
889 | * will be sufficient. | |
890 | */ | |
c2c98fde | 891 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 892 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 893 | |
f59374eb SS |
894 | /* |
895 | * Before removing the station from the driver there might be pending | |
896 | * rx frames on RSS queues sent prior to the disassociation - wait for | |
897 | * all such frames to be processed. | |
898 | */ | |
899 | drv_sync_rx_queues(local, sta); | |
900 | ||
34e89507 | 901 | ret = sta_info_hash_del(local, sta); |
b01711be | 902 | if (WARN_ON(ret)) |
34e89507 JB |
903 | return ret; |
904 | ||
a7a6bdd0 AN |
905 | /* |
906 | * for TDLS peers, make sure to return to the base channel before | |
907 | * removal. | |
908 | */ | |
909 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
910 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
911 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
912 | } | |
913 | ||
794454ce | 914 | list_del_rcu(&sta->list); |
ef044763 | 915 | sta->removed = true; |
4d33960b | 916 | |
6a9d1b91 JB |
917 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
918 | ||
a710c816 JB |
919 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
920 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
921 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
922 | ||
d778207b JB |
923 | return 0; |
924 | } | |
925 | ||
926 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
927 | { | |
928 | struct ieee80211_local *local = sta->local; | |
929 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0ef049dc | 930 | struct station_info *sinfo; |
d778207b JB |
931 | int ret; |
932 | ||
933 | /* | |
934 | * NOTE: This assumes at least synchronize_net() was done | |
935 | * after _part1 and before _part2! | |
936 | */ | |
937 | ||
938 | might_sleep(); | |
939 | lockdep_assert_held(&local->sta_mtx); | |
940 | ||
c8782078 | 941 | /* now keys can no longer be reached */ |
6d10e46b | 942 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 943 | |
9b7a86f3 JB |
944 | /* disable TIM bit - last chance to tell driver */ |
945 | __sta_info_recalc_tim(sta, true); | |
946 | ||
34e89507 JB |
947 | sta->dead = true; |
948 | ||
34e89507 JB |
949 | local->num_sta--; |
950 | local->sta_generation++; | |
951 | ||
83d5cc01 | 952 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
953 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
954 | if (ret) { | |
83d5cc01 JB |
955 | WARN_ON_ONCE(1); |
956 | break; | |
957 | } | |
958 | } | |
d9a7ddb0 | 959 | |
f09603a2 | 960 | if (sta->uploaded) { |
f09603a2 JB |
961 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
962 | IEEE80211_STA_NOTEXIST); | |
963 | WARN_ON_ONCE(ret != 0); | |
964 | } | |
34e89507 | 965 | |
bdcbd8e0 JB |
966 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
967 | ||
0ef049dc AB |
968 | sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); |
969 | if (sinfo) | |
970 | sta_set_sinfo(sta, sinfo); | |
971 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL); | |
972 | kfree(sinfo); | |
ec15e68b | 973 | |
34e89507 JB |
974 | rate_control_remove_sta_debugfs(sta); |
975 | ieee80211_sta_debugfs_remove(sta); | |
976 | ||
d34ba216 | 977 | cleanup_single_sta(sta); |
d778207b JB |
978 | } |
979 | ||
980 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
981 | { | |
982 | int err = __sta_info_destroy_part1(sta); | |
983 | ||
984 | if (err) | |
985 | return err; | |
986 | ||
987 | synchronize_net(); | |
988 | ||
989 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
990 | |
991 | return 0; | |
4d6141c3 JS |
992 | } |
993 | ||
34e89507 | 994 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 995 | { |
34e89507 JB |
996 | struct sta_info *sta; |
997 | int ret; | |
4d6141c3 | 998 | |
34e89507 | 999 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1000 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
1001 | ret = __sta_info_destroy(sta); |
1002 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
1003 | |
1004 | return ret; | |
1005 | } | |
1006 | ||
34e89507 JB |
1007 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
1008 | const u8 *addr) | |
e9f207f0 | 1009 | { |
34e89507 JB |
1010 | struct sta_info *sta; |
1011 | int ret; | |
e9f207f0 | 1012 | |
34e89507 | 1013 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 1014 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
1015 | ret = __sta_info_destroy(sta); |
1016 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 1017 | |
34e89507 JB |
1018 | return ret; |
1019 | } | |
e9f207f0 | 1020 | |
34e89507 JB |
1021 | static void sta_info_cleanup(unsigned long data) |
1022 | { | |
1023 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1024 | struct sta_info *sta; | |
3393a608 | 1025 | bool timer_needed = false; |
34e89507 JB |
1026 | |
1027 | rcu_read_lock(); | |
1028 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
1029 | if (sta_info_cleanup_expire_buffered(local, sta)) |
1030 | timer_needed = true; | |
34e89507 | 1031 | rcu_read_unlock(); |
e9f207f0 | 1032 | |
34e89507 JB |
1033 | if (local->quiescing) |
1034 | return; | |
d0709a65 | 1035 | |
3393a608 JO |
1036 | if (!timer_needed) |
1037 | return; | |
1038 | ||
26d59535 JB |
1039 | mod_timer(&local->sta_cleanup, |
1040 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1041 | } |
e9f207f0 | 1042 | |
7bedd0cf | 1043 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 1044 | { |
7bedd0cf JB |
1045 | return jhash(key, ETH_ALEN, seed); |
1046 | } | |
1047 | ||
1048 | int sta_info_init(struct ieee80211_local *local) | |
1049 | { | |
1050 | int err; | |
1051 | ||
1052 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
1053 | if (err) | |
1054 | return err; | |
1055 | ||
4d33960b | 1056 | spin_lock_init(&local->tim_lock); |
34e89507 | 1057 | mutex_init(&local->sta_mtx); |
f0706e82 | 1058 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1059 | |
b24b8a24 PE |
1060 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
1061 | (unsigned long)local); | |
7bedd0cf | 1062 | return 0; |
f0706e82 JB |
1063 | } |
1064 | ||
1065 | void sta_info_stop(struct ieee80211_local *local) | |
1066 | { | |
a56f992c | 1067 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 1068 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
1069 | } |
1070 | ||
051007d9 | 1071 | |
e716251d | 1072 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1073 | { |
b998e8bb | 1074 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1075 | struct sta_info *sta, *tmp; |
d778207b | 1076 | LIST_HEAD(free_list); |
44213b5e | 1077 | int ret = 0; |
f0706e82 | 1078 | |
d0709a65 | 1079 | might_sleep(); |
be8755e1 | 1080 | |
e716251d JB |
1081 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1082 | WARN_ON(vlans && !sdata->bss); | |
1083 | ||
34e89507 | 1084 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1085 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1086 | if (sdata == sta->sdata || |
1087 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1088 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1089 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1090 | ret++; |
1091 | } | |
be8755e1 | 1092 | } |
d778207b JB |
1093 | |
1094 | if (!list_empty(&free_list)) { | |
1095 | synchronize_net(); | |
1096 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1097 | __sta_info_destroy_part2(sta); | |
1098 | } | |
34e89507 | 1099 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1100 | |
051007d9 JB |
1101 | return ret; |
1102 | } | |
1103 | ||
24723d1b JB |
1104 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1105 | unsigned long exp_time) | |
1106 | { | |
1107 | struct ieee80211_local *local = sdata->local; | |
1108 | struct sta_info *sta, *tmp; | |
24723d1b | 1109 | |
34e89507 | 1110 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1111 | |
1112 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
b8da6b6a JB |
1113 | unsigned long last_active = ieee80211_sta_last_active(sta); |
1114 | ||
ec2b774e ML |
1115 | if (sdata != sta->sdata) |
1116 | continue; | |
1117 | ||
b8da6b6a | 1118 | if (time_is_before_jiffies(last_active + exp_time)) { |
eea57d42 MSS |
1119 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1120 | sta->sta.addr); | |
3f52b7e3 MP |
1121 | |
1122 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1123 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1124 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1125 | ||
34e89507 | 1126 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1127 | } |
e46a2cf9 MSS |
1128 | } |
1129 | ||
34e89507 | 1130 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1131 | } |
17741cdc | 1132 | |
686b9cb9 | 1133 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1134 | const u8 *addr, |
1135 | const u8 *localaddr) | |
17741cdc | 1136 | { |
7bedd0cf JB |
1137 | struct ieee80211_local *local = hw_to_local(hw); |
1138 | struct sta_info *sta; | |
1139 | struct rhash_head *tmp; | |
1140 | const struct bucket_table *tbl; | |
1141 | ||
1142 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1143 | |
686b9cb9 BG |
1144 | /* |
1145 | * Just return a random station if localaddr is NULL | |
1146 | * ... first in list. | |
1147 | */ | |
7bedd0cf | 1148 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1149 | if (localaddr && |
b203ca39 | 1150 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1151 | continue; |
f7c65594 JB |
1152 | if (!sta->uploaded) |
1153 | return NULL; | |
abe60632 | 1154 | return &sta->sta; |
f7c65594 JB |
1155 | } |
1156 | ||
abe60632 | 1157 | return NULL; |
17741cdc | 1158 | } |
686b9cb9 | 1159 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1160 | |
1161 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1162 | const u8 *addr) | |
1163 | { | |
f7c65594 | 1164 | struct sta_info *sta; |
5ed176e1 JB |
1165 | |
1166 | if (!vif) | |
1167 | return NULL; | |
1168 | ||
f7c65594 JB |
1169 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1170 | if (!sta) | |
1171 | return NULL; | |
1172 | ||
1173 | if (!sta->uploaded) | |
1174 | return NULL; | |
5ed176e1 | 1175 | |
f7c65594 | 1176 | return &sta->sta; |
5ed176e1 | 1177 | } |
17741cdc | 1178 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1179 | |
e3685e03 JB |
1180 | /* powersave support code */ |
1181 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1182 | { |
608383bf | 1183 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1184 | struct ieee80211_local *local = sdata->local; |
1185 | struct sk_buff_head pending; | |
ba8c3d6f | 1186 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1187 | unsigned long flags; |
d012a605 MP |
1188 | struct ps_data *ps; |
1189 | ||
3918edb0 FF |
1190 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1191 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1192 | u.ap); | |
1193 | ||
1194 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1195 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1196 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1197 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1198 | else |
1199 | return; | |
50a9432d | 1200 | |
c2c98fde | 1201 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1202 | |
5a306f58 | 1203 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1204 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1205 | sta->txq_buffered_tids = 0; |
af818581 | 1206 | |
30686bf7 | 1207 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1208 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1209 | |
ba8c3d6f FF |
1210 | if (sta->sta.txq[0]) { |
1211 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1212 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1213 | ||
fa962b92 | 1214 | if (!txqi->tin.backlog_packets) |
ba8c3d6f FF |
1215 | continue; |
1216 | ||
1217 | drv_wake_tx_queue(local, txqi); | |
1218 | } | |
1219 | } | |
1220 | ||
948d887d | 1221 | skb_queue_head_init(&pending); |
af818581 | 1222 | |
1d147bfa EG |
1223 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1224 | spin_lock(&sta->ps_lock); | |
af818581 | 1225 | /* Send all buffered frames to the station */ |
948d887d JB |
1226 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1227 | int count = skb_queue_len(&pending), tmp; | |
1228 | ||
987c285c | 1229 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1230 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1231 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1232 | tmp = skb_queue_len(&pending); |
1233 | filtered += tmp - count; | |
1234 | count = tmp; | |
1235 | ||
987c285c | 1236 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1237 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1238 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1239 | tmp = skb_queue_len(&pending); |
1240 | buffered += tmp - count; | |
1241 | } | |
1242 | ||
e3685e03 | 1243 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1244 | |
1245 | /* now we're no longer in the deliver code */ | |
1246 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1247 | ||
1248 | /* The station might have polled and then woken up before we responded, | |
1249 | * so clear these flags now to avoid them sticking around. | |
1250 | */ | |
1251 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1252 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1253 | spin_unlock(&sta->ps_lock); |
948d887d | 1254 | |
e3685e03 JB |
1255 | atomic_dec(&ps->num_sta_ps); |
1256 | ||
687da132 | 1257 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1258 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1259 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1260 | sdata->smps_mode) && |
1261 | sta->known_smps_mode != sdata->bss->req_smps && | |
1262 | sta_info_tx_streams(sta) != 1) { | |
1263 | ht_dbg(sdata, | |
1264 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1265 | sta->sta.addr); | |
1266 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1267 | sta->sta.addr, | |
1268 | sdata->vif.bss_conf.bssid); | |
1269 | } | |
1270 | ||
af818581 JB |
1271 | local->total_ps_buffered -= buffered; |
1272 | ||
c868cb35 JB |
1273 | sta_info_recalc_tim(sta); |
1274 | ||
bdcbd8e0 JB |
1275 | ps_dbg(sdata, |
1276 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1277 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
17c18bf8 JB |
1278 | |
1279 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1280 | } |
1281 | ||
0ead2510 | 1282 | static void ieee80211_send_null_response(struct sta_info *sta, int tid, |
b77cf4f8 | 1283 | enum ieee80211_frame_release_type reason, |
0ead2510 | 1284 | bool call_driver, bool more_data) |
af818581 | 1285 | { |
0ead2510 | 1286 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
af818581 | 1287 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1288 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1289 | struct sk_buff *skb; |
ce662b44 JB |
1290 | int size = sizeof(*nullfunc); |
1291 | __le16 fc; | |
a74a8c84 | 1292 | bool qos = sta->sta.wme; |
ce662b44 | 1293 | struct ieee80211_tx_info *info; |
55de908a | 1294 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1295 | |
ce662b44 JB |
1296 | if (qos) { |
1297 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1298 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1299 | IEEE80211_FCTL_FROMDS); | |
1300 | } else { | |
1301 | size -= 2; | |
1302 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1303 | IEEE80211_STYPE_NULLFUNC | | |
1304 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1305 | } |
af818581 | 1306 | |
ce662b44 JB |
1307 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1308 | if (!skb) | |
1309 | return; | |
1310 | ||
1311 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1312 | ||
1313 | nullfunc = (void *) skb_put(skb, size); | |
1314 | nullfunc->frame_control = fc; | |
1315 | nullfunc->duration_id = 0; | |
1316 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1317 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1318 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1319 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1320 | |
59b66255 JB |
1321 | skb->priority = tid; |
1322 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1323 | if (qos) { |
ce662b44 JB |
1324 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1325 | ||
0ead2510 | 1326 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) { |
ce662b44 JB |
1327 | nullfunc->qos_ctrl |= |
1328 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
0ead2510 EG |
1329 | if (more_data) |
1330 | nullfunc->frame_control |= | |
1331 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1332 | } | |
ce662b44 JB |
1333 | } |
1334 | ||
1335 | info = IEEE80211_SKB_CB(skb); | |
1336 | ||
1337 | /* | |
1338 | * Tell TX path to send this frame even though the | |
1339 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1340 | * exchange. Also set EOSP to indicate this packet |
1341 | * ends the poll/service period. | |
ce662b44 | 1342 | */ |
02f2f1a9 | 1343 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1344 | IEEE80211_TX_STATUS_EOSP | |
1345 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1346 | |
6b127c71 SM |
1347 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1348 | ||
b77cf4f8 JB |
1349 | if (call_driver) |
1350 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1351 | reason, false); | |
40b96408 | 1352 | |
89afe614 JB |
1353 | skb->dev = sdata->dev; |
1354 | ||
55de908a JB |
1355 | rcu_read_lock(); |
1356 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1357 | if (WARN_ON(!chanctx_conf)) { | |
1358 | rcu_read_unlock(); | |
1359 | kfree_skb(skb); | |
1360 | return; | |
1361 | } | |
1362 | ||
73c4e195 | 1363 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1364 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1365 | rcu_read_unlock(); |
ce662b44 JB |
1366 | } |
1367 | ||
0a1cb809 JB |
1368 | static int find_highest_prio_tid(unsigned long tids) |
1369 | { | |
1370 | /* lower 3 TIDs aren't ordered perfectly */ | |
1371 | if (tids & 0xF8) | |
1372 | return fls(tids) - 1; | |
1373 | /* TID 0 is BE just like TID 3 */ | |
1374 | if (tids & BIT(0)) | |
1375 | return 0; | |
1376 | return fls(tids) - 1; | |
1377 | } | |
1378 | ||
0ead2510 EG |
1379 | /* Indicates if the MORE_DATA bit should be set in the last |
1380 | * frame obtained by ieee80211_sta_ps_get_frames. | |
1381 | * Note that driver_release_tids is relevant only if | |
1382 | * reason = IEEE80211_FRAME_RELEASE_PSPOLL | |
1383 | */ | |
1384 | static bool | |
1385 | ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs, | |
1386 | enum ieee80211_frame_release_type reason, | |
1387 | unsigned long driver_release_tids) | |
1388 | { | |
1389 | int ac; | |
1390 | ||
1391 | /* If the driver has data on more than one TID then | |
1392 | * certainly there's more data if we release just a | |
1393 | * single frame now (from a single TID). This will | |
1394 | * only happen for PS-Poll. | |
1395 | */ | |
1396 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && | |
1397 | hweight16(driver_release_tids) > 1) | |
1398 | return true; | |
1399 | ||
1400 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1401 | if (ignored_acs & BIT(ac)) | |
1402 | continue; | |
1403 | ||
1404 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || | |
1405 | !skb_queue_empty(&sta->ps_tx_buf[ac])) | |
1406 | return true; | |
1407 | } | |
1408 | ||
1409 | return false; | |
1410 | } | |
1411 | ||
47086fc5 | 1412 | static void |
0ead2510 EG |
1413 | ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs, |
1414 | enum ieee80211_frame_release_type reason, | |
1415 | struct sk_buff_head *frames, | |
1416 | unsigned long *driver_release_tids) | |
af818581 JB |
1417 | { |
1418 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1419 | struct ieee80211_local *local = sdata->local; | |
948d887d | 1420 | int ac; |
948d887d | 1421 | |
f9f760b4 | 1422 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1423 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1424 | unsigned long tids; |
1425 | ||
47086fc5 | 1426 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1427 | continue; |
1428 | ||
4049e09a JB |
1429 | tids = ieee80211_tids_for_ac(ac); |
1430 | ||
f9f760b4 JB |
1431 | /* if we already have frames from software, then we can't also |
1432 | * release from hardware queues | |
1433 | */ | |
0ead2510 EG |
1434 | if (skb_queue_empty(frames)) { |
1435 | *driver_release_tids |= | |
1436 | sta->driver_buffered_tids & tids; | |
1437 | *driver_release_tids |= sta->txq_buffered_tids & tids; | |
ba8c3d6f | 1438 | } |
948d887d | 1439 | |
0ead2510 | 1440 | if (!*driver_release_tids) { |
f9f760b4 JB |
1441 | struct sk_buff *skb; |
1442 | ||
1443 | while (n_frames > 0) { | |
1444 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1445 | if (!skb) { | |
1446 | skb = skb_dequeue( | |
1447 | &sta->ps_tx_buf[ac]); | |
1448 | if (skb) | |
1449 | local->total_ps_buffered--; | |
1450 | } | |
1451 | if (!skb) | |
1452 | break; | |
1453 | n_frames--; | |
0ead2510 | 1454 | __skb_queue_tail(frames, skb); |
f9f760b4 | 1455 | } |
4049e09a | 1456 | } |
948d887d | 1457 | |
0ead2510 EG |
1458 | /* If we have more frames buffered on this AC, then abort the |
1459 | * loop since we can't send more data from other ACs before | |
1460 | * the buffered frames from this. | |
f9f760b4 | 1461 | */ |
948d887d | 1462 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
0ead2510 | 1463 | !skb_queue_empty(&sta->ps_tx_buf[ac])) |
948d887d | 1464 | break; |
af818581 | 1465 | } |
0ead2510 EG |
1466 | } |
1467 | ||
1468 | static void | |
1469 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1470 | int n_frames, u8 ignored_acs, | |
1471 | enum ieee80211_frame_release_type reason) | |
1472 | { | |
1473 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1474 | struct ieee80211_local *local = sdata->local; | |
1475 | unsigned long driver_release_tids = 0; | |
1476 | struct sk_buff_head frames; | |
1477 | bool more_data; | |
1478 | ||
1479 | /* Service or PS-Poll period starts */ | |
1480 | set_sta_flag(sta, WLAN_STA_SP); | |
1481 | ||
1482 | __skb_queue_head_init(&frames); | |
1483 | ||
1484 | ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason, | |
1485 | &frames, &driver_release_tids); | |
1486 | ||
1487 | more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids); | |
1488 | ||
1a57081a | 1489 | if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL) |
0ead2510 EG |
1490 | driver_release_tids = |
1491 | BIT(find_highest_prio_tid(driver_release_tids)); | |
af818581 | 1492 | |
f9f760b4 | 1493 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1494 | int tid; |
af818581 JB |
1495 | |
1496 | /* | |
ce662b44 JB |
1497 | * For PS-Poll, this can only happen due to a race condition |
1498 | * when we set the TIM bit and the station notices it, but | |
1499 | * before it can poll for the frame we expire it. | |
1500 | * | |
1501 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1502 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1503 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1504 | * more than the value specified in the Max SP Length field | |
1505 | * in the QoS Capability element from delivery-enabled ACs, | |
1506 | * that are destined for the non-AP STA. | |
1507 | * | |
1508 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1509 | */ |
af818581 | 1510 | |
ce662b44 JB |
1511 | /* This will evaluate to 1, 3, 5 or 7. */ |
1512 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1513 | |
0ead2510 | 1514 | ieee80211_send_null_response(sta, tid, reason, true, false); |
f9f760b4 | 1515 | } else if (!driver_release_tids) { |
47086fc5 JB |
1516 | struct sk_buff_head pending; |
1517 | struct sk_buff *skb; | |
40b96408 JB |
1518 | int num = 0; |
1519 | u16 tids = 0; | |
b77cf4f8 | 1520 | bool need_null = false; |
af818581 | 1521 | |
47086fc5 | 1522 | skb_queue_head_init(&pending); |
af818581 | 1523 | |
47086fc5 JB |
1524 | while ((skb = __skb_dequeue(&frames))) { |
1525 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1526 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1527 | u8 *qoshdr = NULL; |
1528 | ||
1529 | num++; | |
af818581 | 1530 | |
47086fc5 JB |
1531 | /* |
1532 | * Tell TX path to send this frame even though the | |
1533 | * STA may still remain is PS mode after this frame | |
1534 | * exchange. | |
1535 | */ | |
6b127c71 SM |
1536 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1537 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1538 | |
1539 | /* | |
1540 | * Use MoreData flag to indicate whether there are | |
1541 | * more buffered frames for this STA | |
1542 | */ | |
24b9c373 | 1543 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1544 | hdr->frame_control |= |
1545 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1546 | else |
1547 | hdr->frame_control &= | |
1548 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1549 | |
40b96408 JB |
1550 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1551 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1552 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1553 | ||
b77cf4f8 | 1554 | tids |= BIT(skb->priority); |
52a3f20c | 1555 | |
b77cf4f8 JB |
1556 | __skb_queue_tail(&pending, skb); |
1557 | ||
1558 | /* end service period after last frame or add one */ | |
1559 | if (!skb_queue_empty(&frames)) | |
1560 | continue; | |
1561 | ||
1562 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1563 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1564 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1565 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1566 | break; |
52a3f20c | 1567 | } |
deeaee19 | 1568 | |
b77cf4f8 JB |
1569 | /* For uAPSD, things are a bit more complicated. If the |
1570 | * last frame has a QoS header (i.e. is a QoS-data or | |
1571 | * QoS-nulldata frame) then just set the EOSP bit there | |
1572 | * and be done. | |
1573 | * If the frame doesn't have a QoS header (which means | |
1574 | * it should be a bufferable MMPDU) then we can't set | |
1575 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1576 | * frame to the list to send it after the MMPDU. | |
1577 | * | |
1578 | * Note that this code is only in the mac80211-release | |
1579 | * code path, we assume that the driver will not buffer | |
1580 | * anything but QoS-data frames, or if it does, will | |
1581 | * create the QoS-nulldata frame by itself if needed. | |
1582 | * | |
1583 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1584 | */ | |
1585 | if (qoshdr) { | |
1586 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1587 | |
b77cf4f8 JB |
1588 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1589 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1590 | } else { | |
1591 | /* The standard isn't completely clear on this | |
1592 | * as it says the more-data bit should be set | |
1593 | * if there are more BUs. The QoS-Null frame | |
1594 | * we're about to send isn't buffered yet, we | |
1595 | * only create it below, but let's pretend it | |
1596 | * was buffered just in case some clients only | |
1597 | * expect more-data=0 when eosp=1. | |
1598 | */ | |
1599 | hdr->frame_control |= | |
1600 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1601 | need_null = true; | |
1602 | num++; | |
1603 | } | |
1604 | break; | |
47086fc5 | 1605 | } |
af818581 | 1606 | |
40b96408 JB |
1607 | drv_allow_buffered_frames(local, sta, tids, num, |
1608 | reason, more_data); | |
1609 | ||
47086fc5 | 1610 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1611 | |
b77cf4f8 JB |
1612 | if (need_null) |
1613 | ieee80211_send_null_response( | |
0ead2510 EG |
1614 | sta, find_highest_prio_tid(tids), |
1615 | reason, false, false); | |
b77cf4f8 | 1616 | |
c868cb35 | 1617 | sta_info_recalc_tim(sta); |
af818581 | 1618 | } else { |
ba8c3d6f FF |
1619 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1620 | int tid; | |
1621 | ||
af818581 | 1622 | /* |
4049e09a JB |
1623 | * We need to release a frame that is buffered somewhere in the |
1624 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1625 | * Note that the driver also has to check the number of frames |
1626 | * on the TIDs we're releasing from - if there are more than | |
1627 | * n_frames it has to set the more-data bit (if we didn't ask | |
1628 | * it to set it anyway due to other buffered frames); if there | |
1629 | * are fewer than n_frames it has to make sure to adjust that | |
1630 | * to allow the service period to end properly. | |
4049e09a JB |
1631 | */ |
1632 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1633 | n_frames, reason, more_data); |
4049e09a JB |
1634 | |
1635 | /* | |
1636 | * Note that we don't recalculate the TIM bit here as it would | |
1637 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1638 | * that the TID(s) became empty before returning here from the |
4049e09a | 1639 | * release function. |
f9f760b4 | 1640 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1641 | * became empty or we find that a txq became empty, we'll do the |
1642 | * TIM recalculation. | |
af818581 | 1643 | */ |
ba8c3d6f FF |
1644 | |
1645 | if (!sta->sta.txq[0]) | |
1646 | return; | |
1647 | ||
1648 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1649 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1650 | ||
fa962b92 | 1651 | if (!(tids & BIT(tid)) || txqi->tin.backlog_packets) |
ba8c3d6f FF |
1652 | continue; |
1653 | ||
1654 | sta_info_recalc_tim(sta); | |
1655 | break; | |
1656 | } | |
af818581 JB |
1657 | } |
1658 | } | |
1659 | ||
47086fc5 JB |
1660 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1661 | { | |
1662 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1663 | ||
1664 | /* | |
1665 | * If all ACs are delivery-enabled then we should reply | |
1666 | * from any of them, if only some are enabled we reply | |
1667 | * only from the non-enabled ones. | |
1668 | */ | |
1669 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1670 | ignore_for_response = 0; | |
1671 | ||
1672 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1673 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1674 | } | |
1675 | ||
1676 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1677 | { | |
1678 | int n_frames = sta->sta.max_sp; | |
1679 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1680 | ||
1681 | /* | |
1682 | * If we ever grow support for TSPEC this might happen if | |
1683 | * the TSPEC update from hostapd comes in between a trigger | |
1684 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1685 | * actually getting called. | |
1686 | */ | |
1687 | if (!delivery_enabled) | |
1688 | return; | |
1689 | ||
47086fc5 JB |
1690 | switch (sta->sta.max_sp) { |
1691 | case 1: | |
1692 | n_frames = 2; | |
1693 | break; | |
1694 | case 2: | |
1695 | n_frames = 4; | |
1696 | break; | |
1697 | case 3: | |
1698 | n_frames = 6; | |
1699 | break; | |
1700 | case 0: | |
1701 | /* XXX: what is a good value? */ | |
13a8098a | 1702 | n_frames = 128; |
47086fc5 JB |
1703 | break; |
1704 | } | |
1705 | ||
1706 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1707 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1708 | } | |
1709 | ||
af818581 JB |
1710 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1711 | struct ieee80211_sta *pubsta, bool block) | |
1712 | { | |
1713 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1714 | ||
b5878a2d JB |
1715 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1716 | ||
5ac2e350 | 1717 | if (block) { |
c2c98fde | 1718 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1719 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1720 | return; |
1721 | } | |
1722 | ||
1723 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1724 | return; | |
1725 | ||
1726 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1727 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1728 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1729 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1730 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1731 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1732 | /* must be asleep in this case */ | |
1733 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1734 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1735 | } else { | |
1736 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1737 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1738 | } |
af818581 JB |
1739 | } |
1740 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1741 | |
e943789e | 1742 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1743 | { |
1744 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1745 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1746 | |
1747 | trace_api_eosp(local, pubsta); | |
1748 | ||
e943789e | 1749 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1750 | } |
e943789e | 1751 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1752 | |
0ead2510 EG |
1753 | void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid) |
1754 | { | |
1755 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1756 | enum ieee80211_frame_release_type reason; | |
1757 | bool more_data; | |
1758 | ||
1759 | trace_api_send_eosp_nullfunc(sta->local, pubsta, tid); | |
1760 | ||
1761 | reason = IEEE80211_FRAME_RELEASE_UAPSD; | |
1762 | more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues, | |
1763 | reason, 0); | |
1764 | ||
1765 | ieee80211_send_null_response(sta, tid, reason, false, more_data); | |
1766 | } | |
1767 | EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc); | |
1768 | ||
042ec453 JB |
1769 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1770 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1771 | { |
1772 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1773 | ||
5a306f58 | 1774 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1775 | return; |
1776 | ||
1b000789 JB |
1777 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1778 | ||
948d887d JB |
1779 | if (buffered) |
1780 | set_bit(tid, &sta->driver_buffered_tids); | |
1781 | else | |
1782 | clear_bit(tid, &sta->driver_buffered_tids); | |
1783 | ||
c868cb35 | 1784 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1785 | } |
042ec453 | 1786 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1787 | |
52cfa1d6 AB |
1788 | static void |
1789 | ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata) | |
1790 | { | |
1791 | struct ieee80211_local *local = sdata->local; | |
1792 | bool allow_p2p_go_ps = sdata->vif.p2p; | |
1793 | struct sta_info *sta; | |
1794 | ||
1795 | rcu_read_lock(); | |
1796 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1797 | if (sdata != sta->sdata || | |
1798 | !test_sta_flag(sta, WLAN_STA_ASSOC)) | |
1799 | continue; | |
1800 | if (!sta->sta.support_p2p_ps) { | |
1801 | allow_p2p_go_ps = false; | |
1802 | break; | |
1803 | } | |
1804 | } | |
1805 | rcu_read_unlock(); | |
1806 | ||
1807 | if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) { | |
1808 | sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps; | |
1809 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS); | |
1810 | } | |
1811 | } | |
1812 | ||
83d5cc01 JB |
1813 | int sta_info_move_state(struct sta_info *sta, |
1814 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1815 | { |
8bf11d8d | 1816 | might_sleep(); |
d9a7ddb0 JB |
1817 | |
1818 | if (sta->sta_state == new_state) | |
1819 | return 0; | |
1820 | ||
f09603a2 JB |
1821 | /* check allowed transitions first */ |
1822 | ||
1823 | switch (new_state) { | |
1824 | case IEEE80211_STA_NONE: | |
1825 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1826 | return -EINVAL; | |
1827 | break; | |
1828 | case IEEE80211_STA_AUTH: | |
1829 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1830 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1831 | return -EINVAL; | |
1832 | break; | |
1833 | case IEEE80211_STA_ASSOC: | |
1834 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1835 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1836 | return -EINVAL; | |
1837 | break; | |
1838 | case IEEE80211_STA_AUTHORIZED: | |
1839 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1840 | return -EINVAL; | |
1841 | break; | |
1842 | default: | |
1843 | WARN(1, "invalid state %d", new_state); | |
1844 | return -EINVAL; | |
1845 | } | |
1846 | ||
bdcbd8e0 JB |
1847 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1848 | sta->sta.addr, new_state); | |
f09603a2 JB |
1849 | |
1850 | /* | |
1851 | * notify the driver before the actual changes so it can | |
1852 | * fail the transition | |
1853 | */ | |
1854 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1855 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1856 | sta->sta_state, new_state); | |
1857 | if (err) | |
1858 | return err; | |
1859 | } | |
1860 | ||
1861 | /* reflect the change in all state variables */ | |
1862 | ||
d9a7ddb0 JB |
1863 | switch (new_state) { |
1864 | case IEEE80211_STA_NONE: | |
1865 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1866 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1867 | break; |
1868 | case IEEE80211_STA_AUTH: | |
a7201a6c | 1869 | if (sta->sta_state == IEEE80211_STA_NONE) { |
d9a7ddb0 | 1870 | set_bit(WLAN_STA_AUTH, &sta->_flags); |
a7201a6c | 1871 | } else if (sta->sta_state == IEEE80211_STA_ASSOC) { |
d9a7ddb0 | 1872 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1873 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1874 | if (!sta->sta.support_p2p_ps) |
1875 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
a7201a6c | 1876 | } |
d9a7ddb0 JB |
1877 | break; |
1878 | case IEEE80211_STA_ASSOC: | |
29623892 | 1879 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1880 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
a7201a6c | 1881 | ieee80211_recalc_min_chandef(sta->sdata); |
52cfa1d6 AB |
1882 | if (!sta->sta.support_p2p_ps) |
1883 | ieee80211_recalc_p2p_go_ps_allowed(sta->sdata); | |
29623892 | 1884 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1885 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1886 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1887 | !sta->sdata->u.vlan.sta)) | |
1888 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1889 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1890 | ieee80211_clear_fast_xmit(sta); |
49ddf8e6 | 1891 | ieee80211_clear_fast_rx(sta); |
f09603a2 | 1892 | } |
d9a7ddb0 JB |
1893 | break; |
1894 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1895 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1896 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1897 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1898 | !sta->sdata->u.vlan.sta)) | |
1899 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
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 | { |
4f6b1b3d JB |
1974 | rinfo->bw = (rate & STA_STATS_RATE_BW_MASK) >> |
1975 | STA_STATS_RATE_BW_SHIFT; | |
1976 | ||
1977 | if (rate & STA_STATS_RATE_VHT) { | |
1978 | rinfo->flags = RATE_INFO_FLAGS_VHT_MCS; | |
1979 | rinfo->mcs = rate & 0xf; | |
1980 | rinfo->nss = (rate & 0xf0) >> 4; | |
1981 | } else if (rate & STA_STATS_RATE_HT) { | |
1982 | rinfo->flags = RATE_INFO_FLAGS_MCS; | |
1983 | rinfo->mcs = rate & 0xff; | |
1984 | } else if (rate & STA_STATS_RATE_LEGACY) { | |
fbd6ff5c | 1985 | struct ieee80211_supported_band *sband; |
fbd6ff5c | 1986 | u16 brate; |
4f6b1b3d JB |
1987 | unsigned int shift; |
1988 | ||
1989 | sband = local->hw.wiphy->bands[(rate >> 4) & 0xf]; | |
1990 | brate = sband->bitrates[rate & 0xf].bitrate; | |
1991 | if (rinfo->bw == RATE_INFO_BW_5) | |
1992 | shift = 2; | |
1993 | else if (rinfo->bw == RATE_INFO_BW_10) | |
1994 | shift = 1; | |
1995 | else | |
1996 | shift = 0; | |
fbd6ff5c JB |
1997 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
1998 | } | |
1999 | ||
4f6b1b3d | 2000 | if (rate & STA_STATS_RATE_SGI) |
fbd6ff5c | 2001 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
4f6b1b3d JB |
2002 | } |
2003 | ||
2004 | static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) | |
2005 | { | |
c9c5962b | 2006 | u16 rate = ACCESS_ONCE(sta_get_last_rx_stats(sta)->last_rate); |
fbd6ff5c | 2007 | |
4f6b1b3d JB |
2008 | if (rate == STA_STATS_RATE_INVALID) |
2009 | rinfo->flags = 0; | |
fbd6ff5c | 2010 | else |
4f6b1b3d | 2011 | sta_stats_decode_rate(sta->local, rate, rinfo); |
fbd6ff5c JB |
2012 | } |
2013 | ||
0f9c5a61 JB |
2014 | static void sta_set_tidstats(struct sta_info *sta, |
2015 | struct cfg80211_tid_stats *tidstats, | |
2016 | int tid) | |
2017 | { | |
2018 | struct ieee80211_local *local = sta->local; | |
2019 | ||
2020 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
2021 | unsigned int start; | |
2022 | ||
2023 | do { | |
2024 | start = u64_stats_fetch_begin(&sta->rx_stats.syncp); | |
2025 | tidstats->rx_msdu = sta->rx_stats.msdu[tid]; | |
2026 | } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start)); | |
2027 | ||
2028 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
2029 | } | |
2030 | ||
2031 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
2032 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
2033 | tidstats->tx_msdu = sta->tx_stats.msdu[tid]; | |
2034 | } | |
2035 | ||
2036 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
2037 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2038 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
2039 | tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid]; | |
2040 | } | |
2041 | ||
2042 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
2043 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { | |
2044 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
2045 | tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid]; | |
2046 | } | |
2047 | } | |
2048 | ||
c9c5962b JB |
2049 | static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats) |
2050 | { | |
2051 | unsigned int start; | |
2052 | u64 value; | |
2053 | ||
2054 | do { | |
2055 | start = u64_stats_fetch_begin(&rxstats->syncp); | |
2056 | value = rxstats->bytes; | |
2057 | } while (u64_stats_fetch_retry(&rxstats->syncp, start)); | |
2058 | ||
2059 | return value; | |
2060 | } | |
2061 | ||
b7ffbd7e JB |
2062 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
2063 | { | |
2064 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
2065 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 2066 | struct rate_control_ref *ref = NULL; |
b7ffbd7e | 2067 | u32 thr = 0; |
c9c5962b JB |
2068 | int i, ac, cpu; |
2069 | struct ieee80211_sta_rx_stats *last_rxstats; | |
2070 | ||
2071 | last_rxstats = sta_get_last_rx_stats(sta); | |
b7ffbd7e | 2072 | |
9a244409 JL |
2073 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
2074 | ref = local->rate_ctrl; | |
2075 | ||
b7ffbd7e JB |
2076 | sinfo->generation = sdata->local->sta_generation; |
2077 | ||
225b8189 JB |
2078 | /* do before driver, so beacon filtering drivers have a |
2079 | * chance to e.g. just add the number of filtered beacons | |
2080 | * (or just modify the value entirely, of course) | |
2081 | */ | |
2082 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
2083 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
2084 | ||
2b9a7e1b JB |
2085 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
2086 | ||
319090bf JB |
2087 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
2088 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
2089 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
2090 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
976bd9ef JB |
2091 | BIT(NL80211_STA_INFO_RX_DROP_MISC); |
2092 | ||
2093 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
2094 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
2095 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS); | |
2096 | } | |
b7ffbd7e | 2097 | |
84b00607 | 2098 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
e5a9f8d0 | 2099 | sinfo->inactive_time = |
b8da6b6a | 2100 | jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta)); |
2b9a7e1b | 2101 | |
319090bf JB |
2102 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
2103 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
2104 | sinfo->tx_bytes = 0; |
2105 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2106 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
319090bf | 2107 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
2108 | } |
2109 | ||
319090bf | 2110 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
2111 | sinfo->tx_packets = 0; |
2112 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 2113 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
319090bf | 2114 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
2115 | } |
2116 | ||
319090bf JB |
2117 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
2118 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
c9c5962b JB |
2119 | sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats); |
2120 | ||
2121 | if (sta->pcpu_rx_stats) { | |
2122 | for_each_possible_cpu(cpu) { | |
2123 | struct ieee80211_sta_rx_stats *cpurxs; | |
2124 | ||
2125 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2126 | sinfo->rx_bytes += sta_get_stats_bytes(cpurxs); | |
2127 | } | |
2128 | } | |
0f9c5a61 | 2129 | |
319090bf | 2130 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
2131 | } |
2132 | ||
319090bf | 2133 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 2134 | sinfo->rx_packets = sta->rx_stats.packets; |
c9c5962b JB |
2135 | if (sta->pcpu_rx_stats) { |
2136 | for_each_possible_cpu(cpu) { | |
2137 | struct ieee80211_sta_rx_stats *cpurxs; | |
2138 | ||
2139 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2140 | sinfo->rx_packets += cpurxs->packets; | |
2141 | } | |
2142 | } | |
319090bf | 2143 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
2144 | } |
2145 | ||
319090bf | 2146 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 2147 | sinfo->tx_retries = sta->status_stats.retry_count; |
319090bf | 2148 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
2149 | } |
2150 | ||
319090bf | 2151 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 2152 | sinfo->tx_failed = sta->status_stats.retry_failed; |
319090bf | 2153 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 2154 | } |
2b9a7e1b | 2155 | |
e5a9f8d0 | 2156 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
c9c5962b JB |
2157 | if (sta->pcpu_rx_stats) { |
2158 | for_each_possible_cpu(cpu) { | |
2159 | struct ieee80211_sta_rx_stats *cpurxs; | |
2160 | ||
2161 | cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu); | |
2162 | sinfo->rx_packets += cpurxs->dropped; | |
2163 | } | |
2164 | } | |
b7ffbd7e | 2165 | |
225b8189 JB |
2166 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
2167 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
2168 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
2169 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
2170 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
2171 | } | |
2172 | ||
30686bf7 JB |
2173 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
2174 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
319090bf | 2175 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
c9c5962b | 2176 | sinfo->signal = (s8)last_rxstats->last_signal; |
319090bf | 2177 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
2178 | } |
2179 | ||
c9c5962b JB |
2180 | if (!sta->pcpu_rx_stats && |
2181 | !(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { | |
40d9a38a | 2182 | sinfo->signal_avg = |
0be6ed13 | 2183 | -ewma_signal_read(&sta->rx_stats_avg.signal); |
319090bf | 2184 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 2185 | } |
b7ffbd7e | 2186 | } |
2b9a7e1b | 2187 | |
c9c5962b JB |
2188 | /* for the average - if pcpu_rx_stats isn't set - rxstats must point to |
2189 | * the sta->rx_stats struct, so the check here is fine with and without | |
2190 | * pcpu statistics | |
2191 | */ | |
2192 | if (last_rxstats->chains && | |
319090bf JB |
2193 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
2194 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
c9c5962b JB |
2195 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL); |
2196 | if (!sta->pcpu_rx_stats) | |
2197 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
2198 | ||
2199 | sinfo->chains = last_rxstats->chains; | |
b7ffbd7e | 2200 | |
b7ffbd7e | 2201 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 | 2202 | sinfo->chain_signal[i] = |
c9c5962b | 2203 | last_rxstats->chain_signal_last[i]; |
b7ffbd7e | 2204 | sinfo->chain_signal_avg[i] = |
0be6ed13 | 2205 | -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]); |
b7ffbd7e JB |
2206 | } |
2207 | } | |
2208 | ||
319090bf | 2209 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
2210 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
2211 | &sinfo->txrate); | |
319090bf | 2212 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
2213 | } |
2214 | ||
319090bf | 2215 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 2216 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 2217 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 2218 | } |
b7ffbd7e | 2219 | |
79c892b8 JB |
2220 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
2221 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
2222 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
2223 | ||
0f9c5a61 | 2224 | sta_set_tidstats(sta, tidstats, i); |
79c892b8 JB |
2225 | } |
2226 | ||
b7ffbd7e JB |
2227 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2228 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
2229 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
2230 | BIT(NL80211_STA_INFO_PLID) | | |
2231 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
2232 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
2233 | BIT(NL80211_STA_INFO_PEER_PM) | | |
2234 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e | 2235 | |
433f5bc1 JB |
2236 | sinfo->llid = sta->mesh->llid; |
2237 | sinfo->plid = sta->mesh->plid; | |
2238 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2239 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
319090bf | 2240 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2241 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2242 | } |
433f5bc1 JB |
2243 | sinfo->local_pm = sta->mesh->local_pm; |
2244 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2245 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
b7ffbd7e JB |
2246 | #endif |
2247 | } | |
2248 | ||
2249 | sinfo->bss_param.flags = 0; | |
2250 | if (sdata->vif.bss_conf.use_cts_prot) | |
2251 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2252 | if (sdata->vif.bss_conf.use_short_preamble) | |
2253 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2254 | if (sdata->vif.bss_conf.use_short_slot) | |
2255 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2256 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2257 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2258 | ||
2259 | sinfo->sta_flags.set = 0; | |
2260 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2261 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2262 | BIT(NL80211_STA_FLAG_WME) | | |
2263 | BIT(NL80211_STA_FLAG_MFP) | | |
2264 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2265 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2266 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2267 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2268 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2269 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2270 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2271 | if (sta->sta.wme) |
b7ffbd7e JB |
2272 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2273 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2274 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2275 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2276 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2277 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2278 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2279 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2280 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2281 | ||
2282 | /* check if the driver has a SW RC implementation */ | |
2283 | if (ref && ref->ops->get_expected_throughput) | |
2284 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2285 | else | |
2286 | thr = drv_get_expected_throughput(local, &sta->sta); | |
2287 | ||
2288 | if (thr != 0) { | |
319090bf | 2289 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
2290 | sinfo->expected_throughput = thr; |
2291 | } | |
2292 | } | |
b8da6b6a JB |
2293 | |
2294 | unsigned long ieee80211_sta_last_active(struct sta_info *sta) | |
2295 | { | |
c9c5962b JB |
2296 | struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); |
2297 | ||
2298 | if (time_after(stats->last_rx, sta->status_stats.last_ack)) | |
2299 | return stats->last_rx; | |
b8da6b6a JB |
2300 | return sta->status_stats.last_ack; |
2301 | } |