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 |
f0706e82 JB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
888d04df | 13 | #include <linux/etherdevice.h> |
f0706e82 JB |
14 | #include <linux/netdevice.h> |
15 | #include <linux/types.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/if_arp.h> | |
0d174406 | 19 | #include <linux/timer.h> |
d0709a65 | 20 | #include <linux/rtnetlink.h> |
f0706e82 JB |
21 | |
22 | #include <net/mac80211.h> | |
23 | #include "ieee80211_i.h" | |
24487981 | 24 | #include "driver-ops.h" |
2c8dccc7 | 25 | #include "rate.h" |
f0706e82 | 26 | #include "sta_info.h" |
e9f207f0 | 27 | #include "debugfs_sta.h" |
ee385855 | 28 | #include "mesh.h" |
ce662b44 | 29 | #include "wme.h" |
f0706e82 | 30 | |
d0709a65 JB |
31 | /** |
32 | * DOC: STA information lifetime rules | |
33 | * | |
34 | * STA info structures (&struct sta_info) are managed in a hash table | |
35 | * for faster lookup and a list for iteration. They are managed using | |
36 | * RCU, i.e. access to the list and hash table is protected by RCU. | |
37 | * | |
34e89507 JB |
38 | * Upon allocating a STA info structure with sta_info_alloc(), the caller |
39 | * owns that structure. It must then insert it into the hash table using | |
40 | * either sta_info_insert() or sta_info_insert_rcu(); only in the latter | |
41 | * case (which acquires an rcu read section but must not be called from | |
42 | * within one) will the pointer still be valid after the call. Note that | |
43 | * the caller may not do much with the STA info before inserting it, in | |
44 | * particular, it may not start any mesh peer link management or add | |
45 | * encryption keys. | |
93e5deb1 JB |
46 | * |
47 | * When the insertion fails (sta_info_insert()) returns non-zero), the | |
48 | * structure will have been freed by sta_info_insert()! | |
d0709a65 | 49 | * |
34e89507 | 50 | * Station entries are added by mac80211 when you establish a link with a |
7e189a12 LR |
51 | * peer. This means different things for the different type of interfaces |
52 | * we support. For a regular station this mean we add the AP sta when we | |
25985edc | 53 | * receive an association response from the AP. For IBSS this occurs when |
34e89507 | 54 | * get to know about a peer on the same IBSS. For WDS we add the sta for |
25985edc | 55 | * the peer immediately upon device open. When using AP mode we add stations |
34e89507 | 56 | * for each respective station upon request from userspace through nl80211. |
7e189a12 | 57 | * |
34e89507 JB |
58 | * In order to remove a STA info structure, various sta_info_destroy_*() |
59 | * calls are available. | |
d0709a65 | 60 | * |
34e89507 JB |
61 | * There is no concept of ownership on a STA entry, each structure is |
62 | * owned by the global hash table/list until it is removed. All users of | |
63 | * the structure need to be RCU protected so that the structure won't be | |
64 | * freed before they are done using it. | |
d0709a65 | 65 | */ |
f0706e82 | 66 | |
7bedd0cf JB |
67 | static const struct rhashtable_params sta_rht_params = { |
68 | .nelem_hint = 3, /* start small */ | |
caf22d31 | 69 | .automatic_shrinking = true, |
7bedd0cf | 70 | .head_offset = offsetof(struct sta_info, hash_node), |
ac100ce5 | 71 | .key_offset = offsetof(struct sta_info, addr), |
7bedd0cf JB |
72 | .key_len = ETH_ALEN, |
73 | .hashfn = sta_addr_hash, | |
ebd82b39 | 74 | .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE, |
7bedd0cf JB |
75 | }; |
76 | ||
4d33960b | 77 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
78 | static int sta_info_hash_del(struct ieee80211_local *local, |
79 | struct sta_info *sta) | |
f0706e82 | 80 | { |
7bedd0cf JB |
81 | return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node, |
82 | sta_rht_params); | |
f0706e82 JB |
83 | } |
84 | ||
5108ca82 | 85 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 86 | { |
b22cfcfc EP |
87 | int ac, i; |
88 | struct tid_ampdu_tx *tid_tx; | |
89 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
90 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 91 | struct ps_data *ps; |
b22cfcfc | 92 | |
e3685e03 | 93 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
94 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
95 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
96 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
97 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
98 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
99 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
100 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
101 | else |
102 | return; | |
b22cfcfc EP |
103 | |
104 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 105 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 106 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 107 | |
d012a605 | 108 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
109 | } |
110 | ||
ba8c3d6f FF |
111 | if (sta->sta.txq[0]) { |
112 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
113 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
114 | int n = skb_queue_len(&txqi->queue); | |
115 | ||
116 | ieee80211_purge_tx_queue(&local->hw, &txqi->queue); | |
117 | atomic_sub(n, &sdata->txqs_len[txqi->txq.ac]); | |
118 | } | |
119 | } | |
120 | ||
b22cfcfc EP |
121 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
122 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
123 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
124 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
125 | } |
126 | ||
45b5028e TP |
127 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
128 | mesh_sta_cleanup(sta); | |
b22cfcfc | 129 | |
5ac2e350 | 130 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
131 | |
132 | /* | |
133 | * Destroy aggregation state here. It would be nice to wait for the | |
134 | * driver to finish aggregation stop and then clean up, but for now | |
135 | * drivers have to handle aggregation stop being requested, followed | |
136 | * directly by station destruction. | |
137 | */ | |
5a306f58 | 138 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 139 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
140 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
141 | if (!tid_tx) | |
142 | continue; | |
1f98ab7f | 143 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
144 | kfree(tid_tx); |
145 | } | |
5108ca82 | 146 | } |
b22cfcfc | 147 | |
5108ca82 JB |
148 | static void cleanup_single_sta(struct sta_info *sta) |
149 | { | |
150 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
151 | struct ieee80211_local *local = sdata->local; | |
152 | ||
153 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
154 | sta_info_free(local, sta); |
155 | } | |
156 | ||
d0709a65 | 157 | /* protected by RCU */ |
abe60632 JB |
158 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
159 | const u8 *addr) | |
f0706e82 | 160 | { |
abe60632 | 161 | struct ieee80211_local *local = sdata->local; |
60f4b626 JB |
162 | struct sta_info *sta; |
163 | struct rhash_head *tmp; | |
164 | const struct bucket_table *tbl; | |
f0706e82 | 165 | |
60f4b626 JB |
166 | rcu_read_lock(); |
167 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
f0706e82 | 168 | |
60f4b626 JB |
169 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
170 | if (sta->sdata == sdata) { | |
171 | rcu_read_unlock(); | |
172 | /* this is safe as the caller must already hold | |
173 | * another rcu read section or the mutex | |
174 | */ | |
175 | return sta; | |
176 | } | |
177 | } | |
178 | rcu_read_unlock(); | |
179 | return NULL; | |
43ba7e95 JB |
180 | } |
181 | ||
0e5ded5a FF |
182 | /* |
183 | * Get sta info either from the specified interface | |
184 | * or from one of its vlans | |
185 | */ | |
186 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
187 | const u8 *addr) | |
188 | { | |
189 | struct ieee80211_local *local = sdata->local; | |
190 | struct sta_info *sta; | |
7bedd0cf JB |
191 | struct rhash_head *tmp; |
192 | const struct bucket_table *tbl; | |
0e5ded5a | 193 | |
7bedd0cf JB |
194 | rcu_read_lock(); |
195 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
196 | ||
197 | for_each_sta_info(local, tbl, addr, sta, tmp) { | |
198 | if (sta->sdata == sdata || | |
199 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
200 | rcu_read_unlock(); | |
201 | /* this is safe as the caller must already hold | |
202 | * another rcu read section or the mutex | |
203 | */ | |
204 | return sta; | |
205 | } | |
0e5ded5a | 206 | } |
7bedd0cf JB |
207 | rcu_read_unlock(); |
208 | return NULL; | |
0e5ded5a FF |
209 | } |
210 | ||
3b53fde8 JB |
211 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
212 | int idx) | |
ee385855 | 213 | { |
3b53fde8 | 214 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
215 | struct sta_info *sta; |
216 | int i = 0; | |
217 | ||
d0709a65 | 218 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 219 | if (sdata != sta->sdata) |
2a8ca29a | 220 | continue; |
ee385855 LCC |
221 | if (i < idx) { |
222 | ++i; | |
223 | continue; | |
ee385855 | 224 | } |
2a8ca29a | 225 | return sta; |
ee385855 | 226 | } |
ee385855 LCC |
227 | |
228 | return NULL; | |
229 | } | |
f0706e82 | 230 | |
93e5deb1 | 231 | /** |
d9a7ddb0 | 232 | * sta_info_free - free STA |
93e5deb1 | 233 | * |
6ef307bc | 234 | * @local: pointer to the global information |
93e5deb1 JB |
235 | * @sta: STA info to free |
236 | * | |
237 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
238 | * that may happen before sta_info_insert(). It may only be |
239 | * called when sta_info_insert() has not been attempted (and | |
240 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 241 | */ |
d9a7ddb0 | 242 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 243 | { |
889cbb91 | 244 | if (sta->rate_ctrl) |
af65cd96 | 245 | rate_control_free_sta(sta); |
93e5deb1 | 246 | |
bdcbd8e0 | 247 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 248 | |
ba8c3d6f FF |
249 | if (sta->sta.txq[0]) |
250 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 251 | kfree(rcu_dereference_raw(sta->sta.rates)); |
433f5bc1 JB |
252 | #ifdef CONFIG_MAC80211_MESH |
253 | kfree(sta->mesh); | |
254 | #endif | |
93e5deb1 JB |
255 | kfree(sta); |
256 | } | |
257 | ||
4d33960b | 258 | /* Caller must hold local->sta_mtx */ |
d0709a65 JB |
259 | static void sta_info_hash_add(struct ieee80211_local *local, |
260 | struct sta_info *sta) | |
f0706e82 | 261 | { |
7bedd0cf JB |
262 | rhashtable_insert_fast(&local->sta_hash, &sta->hash_node, |
263 | sta_rht_params); | |
f0706e82 | 264 | } |
f0706e82 | 265 | |
5ac2e350 | 266 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
267 | { |
268 | struct sta_info *sta; | |
269 | ||
5ac2e350 | 270 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
271 | |
272 | if (sta->dead) | |
273 | return; | |
274 | ||
5ac2e350 JB |
275 | local_bh_disable(); |
276 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 277 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 278 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 279 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 280 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 281 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 282 | local_bh_enable(); |
af818581 JB |
283 | } |
284 | ||
af65cd96 JB |
285 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
286 | struct sta_info *sta, gfp_t gfp) | |
287 | { | |
30686bf7 | 288 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) |
af65cd96 JB |
289 | return 0; |
290 | ||
889cbb91 | 291 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 | 292 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
35c347ac | 293 | sta, gfp); |
889cbb91 | 294 | if (!sta->rate_ctrl_priv) |
af65cd96 | 295 | return -ENOMEM; |
af65cd96 JB |
296 | |
297 | return 0; | |
298 | } | |
299 | ||
73651ee6 | 300 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 301 | const u8 *addr, gfp_t gfp) |
f0706e82 | 302 | { |
d0709a65 | 303 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 304 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 305 | struct sta_info *sta; |
16c5f15c | 306 | int i; |
f0706e82 | 307 | |
ba8c3d6f | 308 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 309 | if (!sta) |
73651ee6 | 310 | return NULL; |
f0706e82 | 311 | |
07346f81 | 312 | spin_lock_init(&sta->lock); |
1d147bfa | 313 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 314 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 315 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 316 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 317 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
318 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
319 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
320 | if (!sta->mesh) | |
321 | goto free; | |
322 | spin_lock_init(&sta->mesh->plink_lock); | |
323 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
324 | !sdata->u.mesh.user_mpm) | |
325 | init_timer(&sta->mesh->plink_timer); | |
326 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; | |
327 | } | |
87f59c70 | 328 | #endif |
07346f81 | 329 | |
ac100ce5 | 330 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 331 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
d0709a65 JB |
332 | sta->local = local; |
333 | sta->sdata = sdata; | |
e5a9f8d0 | 334 | sta->rx_stats.last_rx = jiffies; |
f0706e82 | 335 | |
71ec375c JB |
336 | sta->sta_state = IEEE80211_STA_NONE; |
337 | ||
b6da911b LK |
338 | /* Mark TID as unreserved */ |
339 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
340 | ||
84b00607 | 341 | sta->last_connected = ktime_get_seconds(); |
e5a9f8d0 JB |
342 | ewma_signal_init(&sta->rx_stats.avg_signal); |
343 | for (i = 0; i < ARRAY_SIZE(sta->rx_stats.chain_signal_avg); i++) | |
344 | ewma_signal_init(&sta->rx_stats.chain_signal_avg[i]); | |
541a45a1 | 345 | |
ba8c3d6f FF |
346 | if (local->ops->wake_tx_queue) { |
347 | void *txq_data; | |
348 | int size = sizeof(struct txq_info) + | |
349 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
350 | ||
351 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
352 | if (!txq_data) | |
353 | goto free; | |
354 | ||
355 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
356 | struct txq_info *txq = txq_data + i * size; | |
357 | ||
358 | ieee80211_init_tx_queue(sdata, sta, txq, i); | |
359 | } | |
abfbc3af | 360 | } |
f0706e82 | 361 | |
ba8c3d6f FF |
362 | if (sta_prepare_rate_control(local, sta, gfp)) |
363 | goto free_txq; | |
364 | ||
5a306f58 | 365 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
a622ab72 JB |
366 | /* |
367 | * timer_to_tid must be initialized with identity mapping | |
368 | * to enable session_timer's data differentiation. See | |
369 | * sta_rx_agg_session_timer_expired for usage. | |
370 | */ | |
16c5f15c | 371 | sta->timer_to_tid[i] = i; |
16c5f15c | 372 | } |
948d887d JB |
373 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
374 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
375 | skb_queue_head_init(&sta->tx_filtered[i]); | |
376 | } | |
73651ee6 | 377 | |
5a306f58 | 378 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 379 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 380 | |
af0ed69b | 381 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
382 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
383 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
384 | struct ieee80211_supported_band *sband = | |
ba8c3d6f | 385 | hw->wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
687da132 EG |
386 | u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
387 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
388 | /* | |
389 | * Assume that hostapd advertises our caps in the beacon and | |
390 | * this is the known_smps_mode for a station that just assciated | |
391 | */ | |
392 | switch (smps) { | |
393 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
394 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
395 | break; | |
396 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
397 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
398 | break; | |
399 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
400 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
401 | break; | |
402 | default: | |
403 | WARN_ON(1); | |
404 | } | |
405 | } | |
af0ed69b | 406 | |
bdcbd8e0 | 407 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 408 | |
abfbc3af | 409 | return sta; |
ba8c3d6f FF |
410 | |
411 | free_txq: | |
412 | if (sta->sta.txq[0]) | |
413 | kfree(to_txq_info(sta->sta.txq[0])); | |
414 | free: | |
433f5bc1 JB |
415 | #ifdef CONFIG_MAC80211_MESH |
416 | kfree(sta->mesh); | |
417 | #endif | |
ba8c3d6f FF |
418 | kfree(sta); |
419 | return NULL; | |
73651ee6 JB |
420 | } |
421 | ||
8c71df7a | 422 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 423 | { |
34e89507 | 424 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 425 | |
03e4497e JB |
426 | /* |
427 | * Can't be a WARN_ON because it can be triggered through a race: | |
428 | * something inserts a STA (on one CPU) without holding the RTNL | |
429 | * and another CPU turns off the net device. | |
430 | */ | |
8c71df7a GE |
431 | if (unlikely(!ieee80211_sdata_running(sdata))) |
432 | return -ENETDOWN; | |
03e4497e | 433 | |
b203ca39 | 434 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
435 | is_multicast_ether_addr(sta->sta.addr))) |
436 | return -EINVAL; | |
437 | ||
31104891 JB |
438 | /* Strictly speaking this isn't necessary as we hold the mutex, but |
439 | * the rhashtable code can't really deal with that distinction. We | |
440 | * do require the mutex for correctness though. | |
441 | */ | |
442 | rcu_read_lock(); | |
443 | lockdep_assert_held(&sdata->local->sta_mtx); | |
444 | if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) && | |
445 | ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) { | |
446 | rcu_read_unlock(); | |
447 | return -ENOTUNIQ; | |
448 | } | |
449 | rcu_read_unlock(); | |
450 | ||
8c71df7a GE |
451 | return 0; |
452 | } | |
453 | ||
f09603a2 JB |
454 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
455 | struct ieee80211_sub_if_data *sdata, | |
456 | struct sta_info *sta) | |
457 | { | |
458 | enum ieee80211_sta_state state; | |
459 | int err = 0; | |
460 | ||
461 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
462 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
463 | if (err) | |
464 | break; | |
465 | } | |
466 | ||
467 | if (!err) { | |
a4ec45a4 JB |
468 | /* |
469 | * Drivers using legacy sta_add/sta_remove callbacks only | |
470 | * get uploaded set to true after sta_add is called. | |
471 | */ | |
472 | if (!local->ops->sta_add) | |
473 | sta->uploaded = true; | |
f09603a2 JB |
474 | return 0; |
475 | } | |
476 | ||
477 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
478 | sdata_info(sdata, |
479 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
480 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
481 | err = 0; |
482 | } | |
483 | ||
484 | /* unwind on error */ | |
485 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
486 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
487 | ||
488 | return err; | |
489 | } | |
490 | ||
8c71df7a GE |
491 | /* |
492 | * should be called with sta_mtx locked | |
493 | * this function replaces the mutex lock | |
494 | * with a RCU lock | |
495 | */ | |
4d33960b | 496 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
497 | { |
498 | struct ieee80211_local *local = sta->local; | |
499 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
7852e361 | 500 | struct station_info sinfo; |
8c71df7a GE |
501 | int err = 0; |
502 | ||
503 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 504 | |
7852e361 JB |
505 | /* check if STA exists already */ |
506 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
507 | err = -EEXIST; | |
508 | goto out_err; | |
4d33960b | 509 | } |
32bfd35d | 510 | |
7852e361 JB |
511 | local->num_sta++; |
512 | local->sta_generation++; | |
513 | smp_mb(); | |
4d33960b | 514 | |
5108ca82 JB |
515 | /* simplify things and don't accept BA sessions yet */ |
516 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
517 | ||
7852e361 JB |
518 | /* make the station visible */ |
519 | sta_info_hash_add(local, sta); | |
83d5cc01 | 520 | |
2bad7748 | 521 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 522 | |
5108ca82 JB |
523 | /* notify driver */ |
524 | err = sta_info_insert_drv_state(local, sdata, sta); | |
525 | if (err) | |
526 | goto out_remove; | |
527 | ||
7852e361 | 528 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
529 | /* accept BA sessions now */ |
530 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 531 | |
21f659bf | 532 | ieee80211_recalc_min_chandef(sdata); |
7852e361 JB |
533 | ieee80211_sta_debugfs_add(sta); |
534 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 535 | |
7852e361 JB |
536 | memset(&sinfo, 0, sizeof(sinfo)); |
537 | sinfo.filled = 0; | |
538 | sinfo.generation = local->sta_generation; | |
539 | cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
d0709a65 | 540 | |
bdcbd8e0 | 541 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 542 | |
34e89507 JB |
543 | /* move reference to rcu-protected */ |
544 | rcu_read_lock(); | |
545 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 546 | |
73651ee6 JB |
547 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
548 | mesh_accept_plinks_update(sdata); | |
549 | ||
8c71df7a | 550 | return 0; |
5108ca82 JB |
551 | out_remove: |
552 | sta_info_hash_del(local, sta); | |
553 | list_del_rcu(&sta->list); | |
554 | local->num_sta--; | |
555 | synchronize_net(); | |
556 | __cleanup_single_sta(sta); | |
4d33960b JB |
557 | out_err: |
558 | mutex_unlock(&local->sta_mtx); | |
559 | rcu_read_lock(); | |
560 | return err; | |
8c71df7a GE |
561 | } |
562 | ||
563 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
564 | { | |
565 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 566 | int err; |
8c71df7a | 567 | |
4d33960b JB |
568 | might_sleep(); |
569 | ||
31104891 JB |
570 | mutex_lock(&local->sta_mtx); |
571 | ||
8c71df7a GE |
572 | err = sta_info_insert_check(sta); |
573 | if (err) { | |
31104891 | 574 | mutex_unlock(&local->sta_mtx); |
8c71df7a GE |
575 | rcu_read_lock(); |
576 | goto out_free; | |
577 | } | |
578 | ||
4d33960b | 579 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
580 | if (err) |
581 | goto out_free; | |
582 | ||
73651ee6 | 583 | return 0; |
93e5deb1 | 584 | out_free: |
d9a7ddb0 | 585 | sta_info_free(local, sta); |
93e5deb1 | 586 | return err; |
f0706e82 JB |
587 | } |
588 | ||
34e89507 JB |
589 | int sta_info_insert(struct sta_info *sta) |
590 | { | |
591 | int err = sta_info_insert_rcu(sta); | |
592 | ||
593 | rcu_read_unlock(); | |
594 | ||
595 | return err; | |
596 | } | |
597 | ||
d012a605 | 598 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
599 | { |
600 | /* | |
601 | * This format has been mandated by the IEEE specifications, | |
602 | * so this line may not be changed to use the __set_bit() format. | |
603 | */ | |
d012a605 | 604 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
605 | } |
606 | ||
d012a605 | 607 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
608 | { |
609 | /* | |
610 | * This format has been mandated by the IEEE specifications, | |
611 | * so this line may not be changed to use the __clear_bit() format. | |
612 | */ | |
d012a605 | 613 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
614 | } |
615 | ||
3d5839b6 IP |
616 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
617 | { | |
618 | /* | |
619 | * This format has been mandated by the IEEE specifications, | |
620 | * so this line may not be changed to use the test_bit() format. | |
621 | */ | |
622 | return tim[id / 8] & (1 << (id % 8)); | |
623 | } | |
624 | ||
948d887d | 625 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 626 | { |
948d887d JB |
627 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
628 | switch (ac) { | |
629 | case IEEE80211_AC_VO: | |
630 | return BIT(6) | BIT(7); | |
631 | case IEEE80211_AC_VI: | |
632 | return BIT(4) | BIT(5); | |
633 | case IEEE80211_AC_BE: | |
634 | return BIT(0) | BIT(3); | |
635 | case IEEE80211_AC_BK: | |
636 | return BIT(1) | BIT(2); | |
637 | default: | |
638 | WARN_ON(1); | |
639 | return 0; | |
d0709a65 | 640 | } |
004c872e JB |
641 | } |
642 | ||
9b7a86f3 | 643 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 644 | { |
c868cb35 | 645 | struct ieee80211_local *local = sta->local; |
d012a605 | 646 | struct ps_data *ps; |
948d887d JB |
647 | bool indicate_tim = false; |
648 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
649 | int ac; | |
a69bd8e6 | 650 | u16 id = sta->sta.aid; |
d012a605 MP |
651 | |
652 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
653 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
654 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
655 | return; | |
004c872e | 656 | |
d012a605 | 657 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
658 | #ifdef CONFIG_MAC80211_MESH |
659 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
660 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 661 | #endif |
d012a605 | 662 | } else { |
c868cb35 | 663 | return; |
d012a605 | 664 | } |
3e122be0 | 665 | |
c868cb35 | 666 | /* No need to do anything if the driver does all */ |
30686bf7 | 667 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
c868cb35 | 668 | return; |
004c872e | 669 | |
c868cb35 JB |
670 | if (sta->dead) |
671 | goto done; | |
3e122be0 | 672 | |
948d887d JB |
673 | /* |
674 | * If all ACs are delivery-enabled then we should build | |
675 | * the TIM bit for all ACs anyway; if only some are then | |
676 | * we ignore those and build the TIM bit using only the | |
677 | * non-enabled ones. | |
678 | */ | |
679 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
680 | ignore_for_tim = 0; | |
681 | ||
9b7a86f3 JB |
682 | if (ignore_pending) |
683 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
684 | ||
948d887d JB |
685 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
686 | unsigned long tids; | |
3e122be0 | 687 | |
948d887d JB |
688 | if (ignore_for_tim & BIT(ac)) |
689 | continue; | |
690 | ||
691 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
692 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
693 | if (indicate_tim) | |
694 | break; | |
3e122be0 | 695 | |
948d887d JB |
696 | tids = ieee80211_tids_for_ac(ac); |
697 | ||
698 | indicate_tim |= | |
699 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
700 | indicate_tim |= |
701 | sta->txq_buffered_tids & tids; | |
d0709a65 | 702 | } |
004c872e | 703 | |
c868cb35 | 704 | done: |
65f704a5 | 705 | spin_lock_bh(&local->tim_lock); |
004c872e | 706 | |
3d5839b6 IP |
707 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
708 | goto out_unlock; | |
709 | ||
948d887d | 710 | if (indicate_tim) |
d012a605 | 711 | __bss_tim_set(ps->tim, id); |
c868cb35 | 712 | else |
d012a605 | 713 | __bss_tim_clear(ps->tim, id); |
004c872e | 714 | |
9b7a86f3 | 715 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 716 | local->tim_in_locked_section = true; |
948d887d | 717 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
718 | local->tim_in_locked_section = false; |
719 | } | |
3e122be0 | 720 | |
3d5839b6 | 721 | out_unlock: |
65f704a5 | 722 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
723 | } |
724 | ||
9b7a86f3 JB |
725 | void sta_info_recalc_tim(struct sta_info *sta) |
726 | { | |
727 | __sta_info_recalc_tim(sta, false); | |
728 | } | |
729 | ||
cd0b8d89 | 730 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 731 | { |
e039fa4a | 732 | struct ieee80211_tx_info *info; |
f0706e82 JB |
733 | int timeout; |
734 | ||
735 | if (!skb) | |
cd0b8d89 | 736 | return false; |
f0706e82 | 737 | |
e039fa4a | 738 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
739 | |
740 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
741 | timeout = (sta->listen_interval * |
742 | sta->sdata->vif.bss_conf.beacon_int * | |
743 | 32 / 15625) * HZ; | |
f0706e82 JB |
744 | if (timeout < STA_TX_BUFFER_EXPIRE) |
745 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 746 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
747 | } |
748 | ||
749 | ||
948d887d JB |
750 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
751 | struct sta_info *sta, int ac) | |
f0706e82 JB |
752 | { |
753 | unsigned long flags; | |
754 | struct sk_buff *skb; | |
755 | ||
60750397 JB |
756 | /* |
757 | * First check for frames that should expire on the filtered | |
758 | * queue. Frames here were rejected by the driver and are on | |
759 | * a separate queue to avoid reordering with normal PS-buffered | |
760 | * frames. They also aren't accounted for right now in the | |
761 | * total_ps_buffered counter. | |
762 | */ | |
763 | for (;;) { | |
948d887d JB |
764 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
765 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 766 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 767 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
768 | else |
769 | skb = NULL; | |
948d887d | 770 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
771 | |
772 | /* | |
773 | * Frames are queued in order, so if this one | |
774 | * hasn't expired yet we can stop testing. If | |
775 | * we actually reached the end of the queue we | |
776 | * also need to stop, of course. | |
777 | */ | |
778 | if (!skb) | |
779 | break; | |
d4fa14cd | 780 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
781 | } |
782 | ||
783 | /* | |
784 | * Now also check the normal PS-buffered queue, this will | |
785 | * only find something if the filtered queue was emptied | |
786 | * since the filtered frames are all before the normal PS | |
787 | * buffered frames. | |
788 | */ | |
f0706e82 | 789 | for (;;) { |
948d887d JB |
790 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
791 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 792 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 793 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 794 | else |
f0706e82 | 795 | skb = NULL; |
948d887d | 796 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 797 | |
60750397 JB |
798 | /* |
799 | * frames are queued in order, so if this one | |
800 | * hasn't expired yet (or we reached the end of | |
801 | * the queue) we can stop testing | |
802 | */ | |
836341a7 | 803 | if (!skb) |
f0706e82 | 804 | break; |
836341a7 | 805 | |
836341a7 | 806 | local->total_ps_buffered--; |
bdcbd8e0 JB |
807 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
808 | sta->sta.addr); | |
d4fa14cd | 809 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 810 | } |
3393a608 | 811 | |
60750397 JB |
812 | /* |
813 | * Finally, recalculate the TIM bit for this station -- it might | |
814 | * now be clear because the station was too slow to retrieve its | |
815 | * frames. | |
816 | */ | |
817 | sta_info_recalc_tim(sta); | |
818 | ||
819 | /* | |
820 | * Return whether there are any frames still buffered, this is | |
821 | * used to check whether the cleanup timer still needs to run, | |
822 | * if there are no frames we don't need to rearm the timer. | |
823 | */ | |
948d887d JB |
824 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
825 | skb_queue_empty(&sta->tx_filtered[ac])); | |
826 | } | |
827 | ||
828 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
829 | struct sta_info *sta) | |
830 | { | |
831 | bool have_buffered = false; | |
832 | int ac; | |
833 | ||
3f52b7e3 MP |
834 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
835 | if (!sta->sdata->bss && | |
836 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
837 | return false; |
838 | ||
839 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
840 | have_buffered |= | |
841 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
842 | ||
843 | return have_buffered; | |
f0706e82 JB |
844 | } |
845 | ||
d778207b | 846 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 847 | { |
34e89507 JB |
848 | struct ieee80211_local *local; |
849 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 850 | int ret; |
f0706e82 | 851 | |
34e89507 | 852 | might_sleep(); |
f0706e82 | 853 | |
34e89507 JB |
854 | if (!sta) |
855 | return -ENOENT; | |
5bb644a0 | 856 | |
34e89507 JB |
857 | local = sta->local; |
858 | sdata = sta->sdata; | |
f0706e82 | 859 | |
83d5cc01 JB |
860 | lockdep_assert_held(&local->sta_mtx); |
861 | ||
098a6070 JB |
862 | /* |
863 | * Before removing the station from the driver and | |
864 | * rate control, it might still start new aggregation | |
865 | * sessions -- block that to make sure the tear-down | |
866 | * will be sufficient. | |
867 | */ | |
c2c98fde | 868 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 869 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 870 | |
34e89507 | 871 | ret = sta_info_hash_del(local, sta); |
b01711be | 872 | if (WARN_ON(ret)) |
34e89507 JB |
873 | return ret; |
874 | ||
a7a6bdd0 AN |
875 | /* |
876 | * for TDLS peers, make sure to return to the base channel before | |
877 | * removal. | |
878 | */ | |
879 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
880 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
881 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
882 | } | |
883 | ||
794454ce | 884 | list_del_rcu(&sta->list); |
4d33960b | 885 | |
6a9d1b91 JB |
886 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
887 | ||
a710c816 JB |
888 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
889 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
890 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
891 | ||
d778207b JB |
892 | return 0; |
893 | } | |
894 | ||
895 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
896 | { | |
897 | struct ieee80211_local *local = sta->local; | |
898 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
6f7a8d26 | 899 | struct station_info sinfo = {}; |
d778207b JB |
900 | int ret; |
901 | ||
902 | /* | |
903 | * NOTE: This assumes at least synchronize_net() was done | |
904 | * after _part1 and before _part2! | |
905 | */ | |
906 | ||
907 | might_sleep(); | |
908 | lockdep_assert_held(&local->sta_mtx); | |
909 | ||
c8782078 | 910 | /* now keys can no longer be reached */ |
6d10e46b | 911 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 912 | |
9b7a86f3 JB |
913 | /* disable TIM bit - last chance to tell driver */ |
914 | __sta_info_recalc_tim(sta, true); | |
915 | ||
34e89507 JB |
916 | sta->dead = true; |
917 | ||
34e89507 JB |
918 | local->num_sta--; |
919 | local->sta_generation++; | |
920 | ||
83d5cc01 | 921 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
922 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
923 | if (ret) { | |
83d5cc01 JB |
924 | WARN_ON_ONCE(1); |
925 | break; | |
926 | } | |
927 | } | |
d9a7ddb0 | 928 | |
f09603a2 | 929 | if (sta->uploaded) { |
f09603a2 JB |
930 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
931 | IEEE80211_STA_NOTEXIST); | |
932 | WARN_ON_ONCE(ret != 0); | |
933 | } | |
34e89507 | 934 | |
bdcbd8e0 JB |
935 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
936 | ||
6f7a8d26 JB |
937 | sta_set_sinfo(sta, &sinfo); |
938 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
ec15e68b | 939 | |
34e89507 JB |
940 | rate_control_remove_sta_debugfs(sta); |
941 | ieee80211_sta_debugfs_remove(sta); | |
21f659bf | 942 | ieee80211_recalc_min_chandef(sdata); |
34e89507 | 943 | |
d34ba216 | 944 | cleanup_single_sta(sta); |
d778207b JB |
945 | } |
946 | ||
947 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
948 | { | |
949 | int err = __sta_info_destroy_part1(sta); | |
950 | ||
951 | if (err) | |
952 | return err; | |
953 | ||
954 | synchronize_net(); | |
955 | ||
956 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
957 | |
958 | return 0; | |
4d6141c3 JS |
959 | } |
960 | ||
34e89507 | 961 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 962 | { |
34e89507 JB |
963 | struct sta_info *sta; |
964 | int ret; | |
4d6141c3 | 965 | |
34e89507 | 966 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 967 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
968 | ret = __sta_info_destroy(sta); |
969 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
970 | |
971 | return ret; | |
972 | } | |
973 | ||
34e89507 JB |
974 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
975 | const u8 *addr) | |
e9f207f0 | 976 | { |
34e89507 JB |
977 | struct sta_info *sta; |
978 | int ret; | |
e9f207f0 | 979 | |
34e89507 | 980 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 981 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
982 | ret = __sta_info_destroy(sta); |
983 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 984 | |
34e89507 JB |
985 | return ret; |
986 | } | |
e9f207f0 | 987 | |
34e89507 JB |
988 | static void sta_info_cleanup(unsigned long data) |
989 | { | |
990 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
991 | struct sta_info *sta; | |
3393a608 | 992 | bool timer_needed = false; |
34e89507 JB |
993 | |
994 | rcu_read_lock(); | |
995 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
996 | if (sta_info_cleanup_expire_buffered(local, sta)) |
997 | timer_needed = true; | |
34e89507 | 998 | rcu_read_unlock(); |
e9f207f0 | 999 | |
34e89507 JB |
1000 | if (local->quiescing) |
1001 | return; | |
d0709a65 | 1002 | |
3393a608 JO |
1003 | if (!timer_needed) |
1004 | return; | |
1005 | ||
26d59535 JB |
1006 | mod_timer(&local->sta_cleanup, |
1007 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 1008 | } |
e9f207f0 | 1009 | |
7bedd0cf | 1010 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 1011 | { |
7bedd0cf JB |
1012 | return jhash(key, ETH_ALEN, seed); |
1013 | } | |
1014 | ||
1015 | int sta_info_init(struct ieee80211_local *local) | |
1016 | { | |
1017 | int err; | |
1018 | ||
1019 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
1020 | if (err) | |
1021 | return err; | |
1022 | ||
4d33960b | 1023 | spin_lock_init(&local->tim_lock); |
34e89507 | 1024 | mutex_init(&local->sta_mtx); |
f0706e82 | 1025 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1026 | |
b24b8a24 PE |
1027 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
1028 | (unsigned long)local); | |
7bedd0cf | 1029 | return 0; |
f0706e82 JB |
1030 | } |
1031 | ||
1032 | void sta_info_stop(struct ieee80211_local *local) | |
1033 | { | |
a56f992c | 1034 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 1035 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
1036 | } |
1037 | ||
051007d9 | 1038 | |
e716251d | 1039 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1040 | { |
b998e8bb | 1041 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1042 | struct sta_info *sta, *tmp; |
d778207b | 1043 | LIST_HEAD(free_list); |
44213b5e | 1044 | int ret = 0; |
f0706e82 | 1045 | |
d0709a65 | 1046 | might_sleep(); |
be8755e1 | 1047 | |
e716251d JB |
1048 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1049 | WARN_ON(vlans && !sdata->bss); | |
1050 | ||
34e89507 | 1051 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1052 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1053 | if (sdata == sta->sdata || |
1054 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1055 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1056 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1057 | ret++; |
1058 | } | |
be8755e1 | 1059 | } |
d778207b JB |
1060 | |
1061 | if (!list_empty(&free_list)) { | |
1062 | synchronize_net(); | |
1063 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1064 | __sta_info_destroy_part2(sta); | |
1065 | } | |
34e89507 | 1066 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1067 | |
051007d9 JB |
1068 | return ret; |
1069 | } | |
1070 | ||
24723d1b JB |
1071 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1072 | unsigned long exp_time) | |
1073 | { | |
1074 | struct ieee80211_local *local = sdata->local; | |
1075 | struct sta_info *sta, *tmp; | |
24723d1b | 1076 | |
34e89507 | 1077 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1078 | |
1079 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
ec2b774e ML |
1080 | if (sdata != sta->sdata) |
1081 | continue; | |
1082 | ||
e5a9f8d0 | 1083 | if (time_after(jiffies, sta->rx_stats.last_rx + exp_time)) { |
eea57d42 MSS |
1084 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1085 | sta->sta.addr); | |
3f52b7e3 MP |
1086 | |
1087 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1088 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1089 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1090 | ||
34e89507 | 1091 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1092 | } |
e46a2cf9 MSS |
1093 | } |
1094 | ||
34e89507 | 1095 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1096 | } |
17741cdc | 1097 | |
686b9cb9 | 1098 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1099 | const u8 *addr, |
1100 | const u8 *localaddr) | |
17741cdc | 1101 | { |
7bedd0cf JB |
1102 | struct ieee80211_local *local = hw_to_local(hw); |
1103 | struct sta_info *sta; | |
1104 | struct rhash_head *tmp; | |
1105 | const struct bucket_table *tbl; | |
1106 | ||
1107 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1108 | |
686b9cb9 BG |
1109 | /* |
1110 | * Just return a random station if localaddr is NULL | |
1111 | * ... first in list. | |
1112 | */ | |
7bedd0cf | 1113 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1114 | if (localaddr && |
b203ca39 | 1115 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1116 | continue; |
f7c65594 JB |
1117 | if (!sta->uploaded) |
1118 | return NULL; | |
abe60632 | 1119 | return &sta->sta; |
f7c65594 JB |
1120 | } |
1121 | ||
abe60632 | 1122 | return NULL; |
17741cdc | 1123 | } |
686b9cb9 | 1124 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1125 | |
1126 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1127 | const u8 *addr) | |
1128 | { | |
f7c65594 | 1129 | struct sta_info *sta; |
5ed176e1 JB |
1130 | |
1131 | if (!vif) | |
1132 | return NULL; | |
1133 | ||
f7c65594 JB |
1134 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1135 | if (!sta) | |
1136 | return NULL; | |
1137 | ||
1138 | if (!sta->uploaded) | |
1139 | return NULL; | |
5ed176e1 | 1140 | |
f7c65594 | 1141 | return &sta->sta; |
5ed176e1 | 1142 | } |
17741cdc | 1143 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1144 | |
e3685e03 JB |
1145 | /* powersave support code */ |
1146 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1147 | { |
608383bf | 1148 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1149 | struct ieee80211_local *local = sdata->local; |
1150 | struct sk_buff_head pending; | |
ba8c3d6f | 1151 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1152 | unsigned long flags; |
d012a605 MP |
1153 | struct ps_data *ps; |
1154 | ||
3918edb0 FF |
1155 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1156 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1157 | u.ap); | |
1158 | ||
1159 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1160 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1161 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1162 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1163 | else |
1164 | return; | |
50a9432d | 1165 | |
c2c98fde | 1166 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1167 | |
5a306f58 | 1168 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1169 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1170 | sta->txq_buffered_tids = 0; |
af818581 | 1171 | |
30686bf7 | 1172 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1173 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1174 | |
ba8c3d6f FF |
1175 | if (sta->sta.txq[0]) { |
1176 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1177 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1178 | ||
1179 | if (!skb_queue_len(&txqi->queue)) | |
1180 | continue; | |
1181 | ||
1182 | drv_wake_tx_queue(local, txqi); | |
1183 | } | |
1184 | } | |
1185 | ||
948d887d | 1186 | skb_queue_head_init(&pending); |
af818581 | 1187 | |
1d147bfa EG |
1188 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1189 | spin_lock(&sta->ps_lock); | |
af818581 | 1190 | /* Send all buffered frames to the station */ |
948d887d JB |
1191 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1192 | int count = skb_queue_len(&pending), tmp; | |
1193 | ||
987c285c | 1194 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1195 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1196 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1197 | tmp = skb_queue_len(&pending); |
1198 | filtered += tmp - count; | |
1199 | count = tmp; | |
1200 | ||
987c285c | 1201 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1202 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1203 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1204 | tmp = skb_queue_len(&pending); |
1205 | buffered += tmp - count; | |
1206 | } | |
1207 | ||
e3685e03 | 1208 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1209 | |
1210 | /* now we're no longer in the deliver code */ | |
1211 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1212 | ||
1213 | /* The station might have polled and then woken up before we responded, | |
1214 | * so clear these flags now to avoid them sticking around. | |
1215 | */ | |
1216 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1217 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1218 | spin_unlock(&sta->ps_lock); |
948d887d | 1219 | |
e3685e03 JB |
1220 | atomic_dec(&ps->num_sta_ps); |
1221 | ||
687da132 | 1222 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1223 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1224 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1225 | sdata->smps_mode) && |
1226 | sta->known_smps_mode != sdata->bss->req_smps && | |
1227 | sta_info_tx_streams(sta) != 1) { | |
1228 | ht_dbg(sdata, | |
1229 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1230 | sta->sta.addr); | |
1231 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1232 | sta->sta.addr, | |
1233 | sdata->vif.bss_conf.bssid); | |
1234 | } | |
1235 | ||
af818581 JB |
1236 | local->total_ps_buffered -= buffered; |
1237 | ||
c868cb35 JB |
1238 | sta_info_recalc_tim(sta); |
1239 | ||
bdcbd8e0 JB |
1240 | ps_dbg(sdata, |
1241 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1242 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
17c18bf8 JB |
1243 | |
1244 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1245 | } |
1246 | ||
ce662b44 JB |
1247 | static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, |
1248 | struct sta_info *sta, int tid, | |
b77cf4f8 JB |
1249 | enum ieee80211_frame_release_type reason, |
1250 | bool call_driver) | |
af818581 | 1251 | { |
af818581 | 1252 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1253 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1254 | struct sk_buff *skb; |
ce662b44 JB |
1255 | int size = sizeof(*nullfunc); |
1256 | __le16 fc; | |
a74a8c84 | 1257 | bool qos = sta->sta.wme; |
ce662b44 | 1258 | struct ieee80211_tx_info *info; |
55de908a | 1259 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1260 | |
ce662b44 JB |
1261 | if (qos) { |
1262 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1263 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1264 | IEEE80211_FCTL_FROMDS); | |
1265 | } else { | |
1266 | size -= 2; | |
1267 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1268 | IEEE80211_STYPE_NULLFUNC | | |
1269 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1270 | } |
af818581 | 1271 | |
ce662b44 JB |
1272 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1273 | if (!skb) | |
1274 | return; | |
1275 | ||
1276 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1277 | ||
1278 | nullfunc = (void *) skb_put(skb, size); | |
1279 | nullfunc->frame_control = fc; | |
1280 | nullfunc->duration_id = 0; | |
1281 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1282 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1283 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1284 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1285 | |
59b66255 JB |
1286 | skb->priority = tid; |
1287 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1288 | if (qos) { |
ce662b44 JB |
1289 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1290 | ||
40b96408 | 1291 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
ce662b44 JB |
1292 | nullfunc->qos_ctrl |= |
1293 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
1294 | } | |
1295 | ||
1296 | info = IEEE80211_SKB_CB(skb); | |
1297 | ||
1298 | /* | |
1299 | * Tell TX path to send this frame even though the | |
1300 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1301 | * exchange. Also set EOSP to indicate this packet |
1302 | * ends the poll/service period. | |
ce662b44 | 1303 | */ |
02f2f1a9 | 1304 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1305 | IEEE80211_TX_STATUS_EOSP | |
1306 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1307 | |
6b127c71 SM |
1308 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1309 | ||
b77cf4f8 JB |
1310 | if (call_driver) |
1311 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1312 | reason, false); | |
40b96408 | 1313 | |
89afe614 JB |
1314 | skb->dev = sdata->dev; |
1315 | ||
55de908a JB |
1316 | rcu_read_lock(); |
1317 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1318 | if (WARN_ON(!chanctx_conf)) { | |
1319 | rcu_read_unlock(); | |
1320 | kfree_skb(skb); | |
1321 | return; | |
1322 | } | |
1323 | ||
73c4e195 | 1324 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1325 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1326 | rcu_read_unlock(); |
ce662b44 JB |
1327 | } |
1328 | ||
0a1cb809 JB |
1329 | static int find_highest_prio_tid(unsigned long tids) |
1330 | { | |
1331 | /* lower 3 TIDs aren't ordered perfectly */ | |
1332 | if (tids & 0xF8) | |
1333 | return fls(tids) - 1; | |
1334 | /* TID 0 is BE just like TID 3 */ | |
1335 | if (tids & BIT(0)) | |
1336 | return 0; | |
1337 | return fls(tids) - 1; | |
1338 | } | |
1339 | ||
47086fc5 JB |
1340 | static void |
1341 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1342 | int n_frames, u8 ignored_acs, | |
1343 | enum ieee80211_frame_release_type reason) | |
af818581 JB |
1344 | { |
1345 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1346 | struct ieee80211_local *local = sdata->local; | |
948d887d JB |
1347 | bool more_data = false; |
1348 | int ac; | |
4049e09a | 1349 | unsigned long driver_release_tids = 0; |
47086fc5 | 1350 | struct sk_buff_head frames; |
af818581 | 1351 | |
deeaee19 | 1352 | /* Service or PS-Poll period starts */ |
c2c98fde | 1353 | set_sta_flag(sta, WLAN_STA_SP); |
deeaee19 | 1354 | |
47086fc5 | 1355 | __skb_queue_head_init(&frames); |
948d887d | 1356 | |
f9f760b4 | 1357 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1358 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1359 | unsigned long tids; |
1360 | ||
47086fc5 | 1361 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1362 | continue; |
1363 | ||
4049e09a JB |
1364 | tids = ieee80211_tids_for_ac(ac); |
1365 | ||
f9f760b4 JB |
1366 | /* if we already have frames from software, then we can't also |
1367 | * release from hardware queues | |
1368 | */ | |
ba8c3d6f | 1369 | if (skb_queue_empty(&frames)) { |
f9f760b4 | 1370 | driver_release_tids |= sta->driver_buffered_tids & tids; |
ba8c3d6f FF |
1371 | driver_release_tids |= sta->txq_buffered_tids & tids; |
1372 | } | |
948d887d | 1373 | |
f9f760b4 JB |
1374 | if (driver_release_tids) { |
1375 | /* If the driver has data on more than one TID then | |
4049e09a | 1376 | * certainly there's more data if we release just a |
f9f760b4 JB |
1377 | * single frame now (from a single TID). This will |
1378 | * only happen for PS-Poll. | |
4049e09a | 1379 | */ |
47086fc5 JB |
1380 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
1381 | hweight16(driver_release_tids) > 1) { | |
4049e09a JB |
1382 | more_data = true; |
1383 | driver_release_tids = | |
0a1cb809 JB |
1384 | BIT(find_highest_prio_tid( |
1385 | driver_release_tids)); | |
4049e09a JB |
1386 | break; |
1387 | } | |
f9f760b4 JB |
1388 | } else { |
1389 | struct sk_buff *skb; | |
1390 | ||
1391 | while (n_frames > 0) { | |
1392 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1393 | if (!skb) { | |
1394 | skb = skb_dequeue( | |
1395 | &sta->ps_tx_buf[ac]); | |
1396 | if (skb) | |
1397 | local->total_ps_buffered--; | |
1398 | } | |
1399 | if (!skb) | |
1400 | break; | |
1401 | n_frames--; | |
1402 | __skb_queue_tail(&frames, skb); | |
1403 | } | |
4049e09a | 1404 | } |
948d887d | 1405 | |
f9f760b4 JB |
1406 | /* If we have more frames buffered on this AC, then set the |
1407 | * more-data bit and abort the loop since we can't send more | |
1408 | * data from other ACs before the buffered frames from this. | |
1409 | */ | |
948d887d JB |
1410 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
1411 | !skb_queue_empty(&sta->ps_tx_buf[ac])) { | |
1412 | more_data = true; | |
1413 | break; | |
1414 | } | |
af818581 | 1415 | } |
af818581 | 1416 | |
f9f760b4 | 1417 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1418 | int tid; |
af818581 JB |
1419 | |
1420 | /* | |
ce662b44 JB |
1421 | * For PS-Poll, this can only happen due to a race condition |
1422 | * when we set the TIM bit and the station notices it, but | |
1423 | * before it can poll for the frame we expire it. | |
1424 | * | |
1425 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1426 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1427 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1428 | * more than the value specified in the Max SP Length field | |
1429 | * in the QoS Capability element from delivery-enabled ACs, | |
1430 | * that are destined for the non-AP STA. | |
1431 | * | |
1432 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1433 | */ |
af818581 | 1434 | |
ce662b44 JB |
1435 | /* This will evaluate to 1, 3, 5 or 7. */ |
1436 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1437 | |
b77cf4f8 | 1438 | ieee80211_send_null_response(sdata, sta, tid, reason, true); |
f9f760b4 | 1439 | } else if (!driver_release_tids) { |
47086fc5 JB |
1440 | struct sk_buff_head pending; |
1441 | struct sk_buff *skb; | |
40b96408 JB |
1442 | int num = 0; |
1443 | u16 tids = 0; | |
b77cf4f8 | 1444 | bool need_null = false; |
af818581 | 1445 | |
47086fc5 | 1446 | skb_queue_head_init(&pending); |
af818581 | 1447 | |
47086fc5 JB |
1448 | while ((skb = __skb_dequeue(&frames))) { |
1449 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1450 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1451 | u8 *qoshdr = NULL; |
1452 | ||
1453 | num++; | |
af818581 | 1454 | |
47086fc5 JB |
1455 | /* |
1456 | * Tell TX path to send this frame even though the | |
1457 | * STA may still remain is PS mode after this frame | |
1458 | * exchange. | |
1459 | */ | |
6b127c71 SM |
1460 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1461 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1462 | |
1463 | /* | |
1464 | * Use MoreData flag to indicate whether there are | |
1465 | * more buffered frames for this STA | |
1466 | */ | |
24b9c373 | 1467 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1468 | hdr->frame_control |= |
1469 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1470 | else |
1471 | hdr->frame_control &= | |
1472 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1473 | |
40b96408 JB |
1474 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1475 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1476 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1477 | ||
b77cf4f8 | 1478 | tids |= BIT(skb->priority); |
52a3f20c | 1479 | |
b77cf4f8 JB |
1480 | __skb_queue_tail(&pending, skb); |
1481 | ||
1482 | /* end service period after last frame or add one */ | |
1483 | if (!skb_queue_empty(&frames)) | |
1484 | continue; | |
1485 | ||
1486 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1487 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1488 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1489 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1490 | break; |
52a3f20c | 1491 | } |
deeaee19 | 1492 | |
b77cf4f8 JB |
1493 | /* For uAPSD, things are a bit more complicated. If the |
1494 | * last frame has a QoS header (i.e. is a QoS-data or | |
1495 | * QoS-nulldata frame) then just set the EOSP bit there | |
1496 | * and be done. | |
1497 | * If the frame doesn't have a QoS header (which means | |
1498 | * it should be a bufferable MMPDU) then we can't set | |
1499 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1500 | * frame to the list to send it after the MMPDU. | |
1501 | * | |
1502 | * Note that this code is only in the mac80211-release | |
1503 | * code path, we assume that the driver will not buffer | |
1504 | * anything but QoS-data frames, or if it does, will | |
1505 | * create the QoS-nulldata frame by itself if needed. | |
1506 | * | |
1507 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1508 | */ | |
1509 | if (qoshdr) { | |
1510 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1511 | |
b77cf4f8 JB |
1512 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1513 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1514 | } else { | |
1515 | /* The standard isn't completely clear on this | |
1516 | * as it says the more-data bit should be set | |
1517 | * if there are more BUs. The QoS-Null frame | |
1518 | * we're about to send isn't buffered yet, we | |
1519 | * only create it below, but let's pretend it | |
1520 | * was buffered just in case some clients only | |
1521 | * expect more-data=0 when eosp=1. | |
1522 | */ | |
1523 | hdr->frame_control |= | |
1524 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1525 | need_null = true; | |
1526 | num++; | |
1527 | } | |
1528 | break; | |
47086fc5 | 1529 | } |
af818581 | 1530 | |
40b96408 JB |
1531 | drv_allow_buffered_frames(local, sta, tids, num, |
1532 | reason, more_data); | |
1533 | ||
47086fc5 | 1534 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1535 | |
b77cf4f8 JB |
1536 | if (need_null) |
1537 | ieee80211_send_null_response( | |
1538 | sdata, sta, find_highest_prio_tid(tids), | |
1539 | reason, false); | |
1540 | ||
c868cb35 | 1541 | sta_info_recalc_tim(sta); |
af818581 | 1542 | } else { |
ba8c3d6f FF |
1543 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1544 | int tid; | |
1545 | ||
af818581 | 1546 | /* |
4049e09a JB |
1547 | * We need to release a frame that is buffered somewhere in the |
1548 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1549 | * Note that the driver also has to check the number of frames |
1550 | * on the TIDs we're releasing from - if there are more than | |
1551 | * n_frames it has to set the more-data bit (if we didn't ask | |
1552 | * it to set it anyway due to other buffered frames); if there | |
1553 | * are fewer than n_frames it has to make sure to adjust that | |
1554 | * to allow the service period to end properly. | |
4049e09a JB |
1555 | */ |
1556 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1557 | n_frames, reason, more_data); |
4049e09a JB |
1558 | |
1559 | /* | |
1560 | * Note that we don't recalculate the TIM bit here as it would | |
1561 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1562 | * that the TID(s) became empty before returning here from the |
4049e09a | 1563 | * release function. |
f9f760b4 | 1564 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1565 | * became empty or we find that a txq became empty, we'll do the |
1566 | * TIM recalculation. | |
af818581 | 1567 | */ |
ba8c3d6f FF |
1568 | |
1569 | if (!sta->sta.txq[0]) | |
1570 | return; | |
1571 | ||
1572 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1573 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1574 | ||
1575 | if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue)) | |
1576 | continue; | |
1577 | ||
1578 | sta_info_recalc_tim(sta); | |
1579 | break; | |
1580 | } | |
af818581 JB |
1581 | } |
1582 | } | |
1583 | ||
47086fc5 JB |
1584 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1585 | { | |
1586 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1587 | ||
1588 | /* | |
1589 | * If all ACs are delivery-enabled then we should reply | |
1590 | * from any of them, if only some are enabled we reply | |
1591 | * only from the non-enabled ones. | |
1592 | */ | |
1593 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1594 | ignore_for_response = 0; | |
1595 | ||
1596 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1597 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1598 | } | |
1599 | ||
1600 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1601 | { | |
1602 | int n_frames = sta->sta.max_sp; | |
1603 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1604 | ||
1605 | /* | |
1606 | * If we ever grow support for TSPEC this might happen if | |
1607 | * the TSPEC update from hostapd comes in between a trigger | |
1608 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1609 | * actually getting called. | |
1610 | */ | |
1611 | if (!delivery_enabled) | |
1612 | return; | |
1613 | ||
47086fc5 JB |
1614 | switch (sta->sta.max_sp) { |
1615 | case 1: | |
1616 | n_frames = 2; | |
1617 | break; | |
1618 | case 2: | |
1619 | n_frames = 4; | |
1620 | break; | |
1621 | case 3: | |
1622 | n_frames = 6; | |
1623 | break; | |
1624 | case 0: | |
1625 | /* XXX: what is a good value? */ | |
13a8098a | 1626 | n_frames = 128; |
47086fc5 JB |
1627 | break; |
1628 | } | |
1629 | ||
1630 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1631 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1632 | } | |
1633 | ||
af818581 JB |
1634 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1635 | struct ieee80211_sta *pubsta, bool block) | |
1636 | { | |
1637 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1638 | ||
b5878a2d JB |
1639 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1640 | ||
5ac2e350 | 1641 | if (block) { |
c2c98fde | 1642 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1643 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1644 | return; |
1645 | } | |
1646 | ||
1647 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1648 | return; | |
1649 | ||
1650 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1651 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1652 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1653 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1654 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1655 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1656 | /* must be asleep in this case */ | |
1657 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1658 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1659 | } else { | |
1660 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1661 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1662 | } |
af818581 JB |
1663 | } |
1664 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1665 | |
e943789e | 1666 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1667 | { |
1668 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1669 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1670 | |
1671 | trace_api_eosp(local, pubsta); | |
1672 | ||
e943789e | 1673 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1674 | } |
e943789e | 1675 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1676 | |
042ec453 JB |
1677 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1678 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1679 | { |
1680 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1681 | ||
5a306f58 | 1682 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1683 | return; |
1684 | ||
1b000789 JB |
1685 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1686 | ||
948d887d JB |
1687 | if (buffered) |
1688 | set_bit(tid, &sta->driver_buffered_tids); | |
1689 | else | |
1690 | clear_bit(tid, &sta->driver_buffered_tids); | |
1691 | ||
c868cb35 | 1692 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1693 | } |
042ec453 | 1694 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1695 | |
83d5cc01 JB |
1696 | int sta_info_move_state(struct sta_info *sta, |
1697 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1698 | { |
8bf11d8d | 1699 | might_sleep(); |
d9a7ddb0 JB |
1700 | |
1701 | if (sta->sta_state == new_state) | |
1702 | return 0; | |
1703 | ||
f09603a2 JB |
1704 | /* check allowed transitions first */ |
1705 | ||
1706 | switch (new_state) { | |
1707 | case IEEE80211_STA_NONE: | |
1708 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1709 | return -EINVAL; | |
1710 | break; | |
1711 | case IEEE80211_STA_AUTH: | |
1712 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1713 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1714 | return -EINVAL; | |
1715 | break; | |
1716 | case IEEE80211_STA_ASSOC: | |
1717 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1718 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1719 | return -EINVAL; | |
1720 | break; | |
1721 | case IEEE80211_STA_AUTHORIZED: | |
1722 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1723 | return -EINVAL; | |
1724 | break; | |
1725 | default: | |
1726 | WARN(1, "invalid state %d", new_state); | |
1727 | return -EINVAL; | |
1728 | } | |
1729 | ||
bdcbd8e0 JB |
1730 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1731 | sta->sta.addr, new_state); | |
f09603a2 JB |
1732 | |
1733 | /* | |
1734 | * notify the driver before the actual changes so it can | |
1735 | * fail the transition | |
1736 | */ | |
1737 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1738 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1739 | sta->sta_state, new_state); | |
1740 | if (err) | |
1741 | return err; | |
1742 | } | |
1743 | ||
1744 | /* reflect the change in all state variables */ | |
1745 | ||
d9a7ddb0 JB |
1746 | switch (new_state) { |
1747 | case IEEE80211_STA_NONE: | |
1748 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1749 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1750 | break; |
1751 | case IEEE80211_STA_AUTH: | |
1752 | if (sta->sta_state == IEEE80211_STA_NONE) | |
1753 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1754 | else if (sta->sta_state == IEEE80211_STA_ASSOC) | |
1755 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
d9a7ddb0 JB |
1756 | break; |
1757 | case IEEE80211_STA_ASSOC: | |
29623892 | 1758 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1759 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
29623892 | 1760 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1761 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1762 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1763 | !sta->sdata->u.vlan.sta)) | |
1764 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1765 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1766 | ieee80211_clear_fast_xmit(sta); |
f09603a2 | 1767 | } |
d9a7ddb0 JB |
1768 | break; |
1769 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1770 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1771 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1772 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1773 | !sta->sdata->u.vlan.sta)) | |
1774 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1775 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1776 | ieee80211_check_fast_xmit(sta); |
f09603a2 | 1777 | } |
d9a7ddb0 JB |
1778 | break; |
1779 | default: | |
f09603a2 | 1780 | break; |
d9a7ddb0 JB |
1781 | } |
1782 | ||
d9a7ddb0 JB |
1783 | sta->sta_state = new_state; |
1784 | ||
1785 | return 0; | |
1786 | } | |
687da132 EG |
1787 | |
1788 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1789 | { | |
1790 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1791 | u8 rx_streams; | |
1792 | ||
1793 | if (!sta->sta.ht_cap.ht_supported) | |
1794 | return 1; | |
1795 | ||
1796 | if (sta->sta.vht_cap.vht_supported) { | |
1797 | int i; | |
1798 | u16 tx_mcs_map = | |
1799 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1800 | ||
1801 | for (i = 7; i >= 0; i--) | |
1802 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1803 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1804 | return i + 1; | |
1805 | } | |
1806 | ||
1807 | if (ht_cap->mcs.rx_mask[3]) | |
1808 | rx_streams = 4; | |
1809 | else if (ht_cap->mcs.rx_mask[2]) | |
1810 | rx_streams = 3; | |
1811 | else if (ht_cap->mcs.rx_mask[1]) | |
1812 | rx_streams = 2; | |
1813 | else | |
1814 | rx_streams = 1; | |
1815 | ||
1816 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1817 | return rx_streams; | |
1818 | ||
1819 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1820 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1821 | } | |
b7ffbd7e | 1822 | |
fbd6ff5c JB |
1823 | static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
1824 | { | |
1825 | rinfo->flags = 0; | |
1826 | ||
e5a9f8d0 | 1827 | if (sta->rx_stats.last_rate_flag & RX_FLAG_HT) { |
fbd6ff5c | 1828 | rinfo->flags |= RATE_INFO_FLAGS_MCS; |
e5a9f8d0 JB |
1829 | rinfo->mcs = sta->rx_stats.last_rate_idx; |
1830 | } else if (sta->rx_stats.last_rate_flag & RX_FLAG_VHT) { | |
fbd6ff5c | 1831 | rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; |
e5a9f8d0 JB |
1832 | rinfo->nss = sta->rx_stats.last_rate_vht_nss; |
1833 | rinfo->mcs = sta->rx_stats.last_rate_idx; | |
fbd6ff5c JB |
1834 | } else { |
1835 | struct ieee80211_supported_band *sband; | |
1836 | int shift = ieee80211_vif_get_shift(&sta->sdata->vif); | |
1837 | u16 brate; | |
1838 | ||
1839 | sband = sta->local->hw.wiphy->bands[ | |
1840 | ieee80211_get_sdata_band(sta->sdata)]; | |
e5a9f8d0 | 1841 | brate = sband->bitrates[sta->rx_stats.last_rate_idx].bitrate; |
fbd6ff5c JB |
1842 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
1843 | } | |
1844 | ||
e5a9f8d0 | 1845 | if (sta->rx_stats.last_rate_flag & RX_FLAG_SHORT_GI) |
fbd6ff5c JB |
1846 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
1847 | ||
e5a9f8d0 | 1848 | if (sta->rx_stats.last_rate_flag & RX_FLAG_5MHZ) |
fbd6ff5c | 1849 | rinfo->bw = RATE_INFO_BW_5; |
e5a9f8d0 | 1850 | else if (sta->rx_stats.last_rate_flag & RX_FLAG_10MHZ) |
fbd6ff5c | 1851 | rinfo->bw = RATE_INFO_BW_10; |
e5a9f8d0 | 1852 | else if (sta->rx_stats.last_rate_flag & RX_FLAG_40MHZ) |
fbd6ff5c | 1853 | rinfo->bw = RATE_INFO_BW_40; |
e5a9f8d0 | 1854 | else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_80MHZ) |
fbd6ff5c | 1855 | rinfo->bw = RATE_INFO_BW_80; |
e5a9f8d0 | 1856 | else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_160MHZ) |
fbd6ff5c JB |
1857 | rinfo->bw = RATE_INFO_BW_160; |
1858 | else | |
1859 | rinfo->bw = RATE_INFO_BW_20; | |
1860 | } | |
1861 | ||
b7ffbd7e JB |
1862 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
1863 | { | |
1864 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1865 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 1866 | struct rate_control_ref *ref = NULL; |
b7ffbd7e JB |
1867 | u32 thr = 0; |
1868 | int i, ac; | |
1869 | ||
9a244409 JL |
1870 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
1871 | ref = local->rate_ctrl; | |
1872 | ||
b7ffbd7e JB |
1873 | sinfo->generation = sdata->local->sta_generation; |
1874 | ||
225b8189 JB |
1875 | /* do before driver, so beacon filtering drivers have a |
1876 | * chance to e.g. just add the number of filtered beacons | |
1877 | * (or just modify the value entirely, of course) | |
1878 | */ | |
1879 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1880 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
1881 | ||
2b9a7e1b JB |
1882 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
1883 | ||
319090bf JB |
1884 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
1885 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
1886 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
1887 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
976bd9ef JB |
1888 | BIT(NL80211_STA_INFO_RX_DROP_MISC); |
1889 | ||
1890 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
1891 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
1892 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS); | |
1893 | } | |
b7ffbd7e | 1894 | |
84b00607 | 1895 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
e5a9f8d0 JB |
1896 | sinfo->inactive_time = |
1897 | jiffies_to_msecs(jiffies - sta->rx_stats.last_rx); | |
2b9a7e1b | 1898 | |
319090bf JB |
1899 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
1900 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
1901 | sinfo->tx_bytes = 0; |
1902 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 1903 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
319090bf | 1904 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
1905 | } |
1906 | ||
319090bf | 1907 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
1908 | sinfo->tx_packets = 0; |
1909 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 1910 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
319090bf | 1911 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
1912 | } |
1913 | ||
319090bf JB |
1914 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
1915 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
e5a9f8d0 | 1916 | sinfo->rx_bytes = sta->rx_stats.bytes; |
319090bf | 1917 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
1918 | } |
1919 | ||
319090bf | 1920 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 1921 | sinfo->rx_packets = sta->rx_stats.packets; |
319090bf | 1922 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
1923 | } |
1924 | ||
319090bf | 1925 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 1926 | sinfo->tx_retries = sta->status_stats.retry_count; |
319090bf | 1927 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
1928 | } |
1929 | ||
319090bf | 1930 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 1931 | sinfo->tx_failed = sta->status_stats.retry_failed; |
319090bf | 1932 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 1933 | } |
2b9a7e1b | 1934 | |
e5a9f8d0 | 1935 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
b7ffbd7e | 1936 | |
225b8189 JB |
1937 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1938 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
1939 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
1940 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
1941 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
1942 | } | |
1943 | ||
30686bf7 JB |
1944 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
1945 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
319090bf | 1946 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
e5a9f8d0 | 1947 | sinfo->signal = (s8)sta->rx_stats.last_signal; |
319090bf | 1948 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
1949 | } |
1950 | ||
319090bf | 1951 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 1952 | sinfo->signal_avg = |
e5a9f8d0 | 1953 | -ewma_signal_read(&sta->rx_stats.avg_signal); |
319090bf | 1954 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 1955 | } |
b7ffbd7e | 1956 | } |
2b9a7e1b | 1957 | |
e5a9f8d0 | 1958 | if (sta->rx_stats.chains && |
319090bf JB |
1959 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
1960 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
1961 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | | |
1962 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
b7ffbd7e | 1963 | |
e5a9f8d0 | 1964 | sinfo->chains = sta->rx_stats.chains; |
b7ffbd7e | 1965 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 JB |
1966 | sinfo->chain_signal[i] = |
1967 | sta->rx_stats.chain_signal_last[i]; | |
b7ffbd7e | 1968 | sinfo->chain_signal_avg[i] = |
e5a9f8d0 | 1969 | -ewma_signal_read(&sta->rx_stats.chain_signal_avg[i]); |
b7ffbd7e JB |
1970 | } |
1971 | } | |
1972 | ||
319090bf | 1973 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
1974 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
1975 | &sinfo->txrate); | |
319090bf | 1976 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
1977 | } |
1978 | ||
319090bf | 1979 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 1980 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 1981 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 1982 | } |
b7ffbd7e | 1983 | |
79c892b8 JB |
1984 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
1985 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
1986 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
1987 | ||
1988 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
1989 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
e5a9f8d0 | 1990 | tidstats->rx_msdu = sta->rx_stats.msdu[i]; |
79c892b8 JB |
1991 | } |
1992 | ||
1993 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
1994 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
e5a9f8d0 | 1995 | tidstats->tx_msdu = sta->tx_stats.msdu[i]; |
79c892b8 JB |
1996 | } |
1997 | ||
1998 | if (!(tidstats->filled & | |
1999 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
30686bf7 | 2000 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
2001 | tidstats->filled |= |
2002 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
e5a9f8d0 JB |
2003 | tidstats->tx_msdu_retries = |
2004 | sta->status_stats.msdu_retries[i]; | |
79c892b8 JB |
2005 | } |
2006 | ||
2007 | if (!(tidstats->filled & | |
2008 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
30686bf7 | 2009 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
2010 | tidstats->filled |= |
2011 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
e5a9f8d0 JB |
2012 | tidstats->tx_msdu_failed = |
2013 | sta->status_stats.msdu_failed[i]; | |
79c892b8 JB |
2014 | } |
2015 | } | |
2016 | ||
b7ffbd7e JB |
2017 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2018 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
2019 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
2020 | BIT(NL80211_STA_INFO_PLID) | | |
2021 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
2022 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
2023 | BIT(NL80211_STA_INFO_PEER_PM) | | |
2024 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e | 2025 | |
433f5bc1 JB |
2026 | sinfo->llid = sta->mesh->llid; |
2027 | sinfo->plid = sta->mesh->plid; | |
2028 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2029 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
319090bf | 2030 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2031 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2032 | } |
433f5bc1 JB |
2033 | sinfo->local_pm = sta->mesh->local_pm; |
2034 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2035 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
b7ffbd7e JB |
2036 | #endif |
2037 | } | |
2038 | ||
2039 | sinfo->bss_param.flags = 0; | |
2040 | if (sdata->vif.bss_conf.use_cts_prot) | |
2041 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2042 | if (sdata->vif.bss_conf.use_short_preamble) | |
2043 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2044 | if (sdata->vif.bss_conf.use_short_slot) | |
2045 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2046 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2047 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2048 | ||
2049 | sinfo->sta_flags.set = 0; | |
2050 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2051 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2052 | BIT(NL80211_STA_FLAG_WME) | | |
2053 | BIT(NL80211_STA_FLAG_MFP) | | |
2054 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2055 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2056 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2057 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2058 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2059 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2060 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2061 | if (sta->sta.wme) |
b7ffbd7e JB |
2062 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2063 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2064 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2065 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2066 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2067 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2068 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2069 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2070 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2071 | ||
2072 | /* check if the driver has a SW RC implementation */ | |
2073 | if (ref && ref->ops->get_expected_throughput) | |
2074 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2075 | else | |
2076 | thr = drv_get_expected_throughput(local, &sta->sta); | |
2077 | ||
2078 | if (thr != 0) { | |
319090bf | 2079 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
2080 | sinfo->expected_throughput = thr; |
2081 | } | |
2082 | } |