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Commit | Line | Data |
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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; |
ebe27c91 | 306 | struct timespec uptime; |
16c5f15c | 307 | int i; |
f0706e82 | 308 | |
ba8c3d6f | 309 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 310 | if (!sta) |
73651ee6 | 311 | return NULL; |
f0706e82 | 312 | |
07346f81 | 313 | spin_lock_init(&sta->lock); |
1d147bfa | 314 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 315 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 316 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 317 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 318 | #ifdef CONFIG_MAC80211_MESH |
433f5bc1 JB |
319 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
320 | sta->mesh = kzalloc(sizeof(*sta->mesh), gfp); | |
321 | if (!sta->mesh) | |
322 | goto free; | |
323 | spin_lock_init(&sta->mesh->plink_lock); | |
324 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
325 | !sdata->u.mesh.user_mpm) | |
326 | init_timer(&sta->mesh->plink_timer); | |
327 | sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; | |
328 | } | |
87f59c70 | 329 | #endif |
07346f81 | 330 | |
ac100ce5 | 331 | memcpy(sta->addr, addr, ETH_ALEN); |
17741cdc | 332 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
d0709a65 JB |
333 | sta->local = local; |
334 | sta->sdata = sdata; | |
8bc8aecd | 335 | sta->last_rx = jiffies; |
f0706e82 | 336 | |
71ec375c JB |
337 | sta->sta_state = IEEE80211_STA_NONE; |
338 | ||
b6da911b LK |
339 | /* Mark TID as unreserved */ |
340 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
341 | ||
18171520 | 342 | ktime_get_ts(&uptime); |
ebe27c91 | 343 | sta->last_connected = uptime.tv_sec; |
40d9a38a | 344 | ewma_signal_init(&sta->avg_signal); |
ef0621e8 | 345 | for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++) |
40d9a38a | 346 | ewma_signal_init(&sta->chain_signal_avg[i]); |
541a45a1 | 347 | |
ba8c3d6f FF |
348 | if (local->ops->wake_tx_queue) { |
349 | void *txq_data; | |
350 | int size = sizeof(struct txq_info) + | |
351 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
352 | ||
353 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
354 | if (!txq_data) | |
355 | goto free; | |
356 | ||
357 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
358 | struct txq_info *txq = txq_data + i * size; | |
359 | ||
360 | ieee80211_init_tx_queue(sdata, sta, txq, i); | |
361 | } | |
abfbc3af | 362 | } |
f0706e82 | 363 | |
ba8c3d6f FF |
364 | if (sta_prepare_rate_control(local, sta, gfp)) |
365 | goto free_txq; | |
366 | ||
5a306f58 | 367 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
a622ab72 JB |
368 | /* |
369 | * timer_to_tid must be initialized with identity mapping | |
370 | * to enable session_timer's data differentiation. See | |
371 | * sta_rx_agg_session_timer_expired for usage. | |
372 | */ | |
16c5f15c | 373 | sta->timer_to_tid[i] = i; |
16c5f15c | 374 | } |
948d887d JB |
375 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
376 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
377 | skb_queue_head_init(&sta->tx_filtered[i]); | |
378 | } | |
73651ee6 | 379 | |
5a306f58 | 380 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 381 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 382 | |
af0ed69b | 383 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
384 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
385 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
386 | struct ieee80211_supported_band *sband = | |
ba8c3d6f | 387 | hw->wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
687da132 EG |
388 | u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
389 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
390 | /* | |
391 | * Assume that hostapd advertises our caps in the beacon and | |
392 | * this is the known_smps_mode for a station that just assciated | |
393 | */ | |
394 | switch (smps) { | |
395 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
396 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
397 | break; | |
398 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
399 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
400 | break; | |
401 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
402 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
403 | break; | |
404 | default: | |
405 | WARN_ON(1); | |
406 | } | |
407 | } | |
af0ed69b | 408 | |
bdcbd8e0 | 409 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 410 | |
abfbc3af | 411 | return sta; |
ba8c3d6f FF |
412 | |
413 | free_txq: | |
414 | if (sta->sta.txq[0]) | |
415 | kfree(to_txq_info(sta->sta.txq[0])); | |
416 | free: | |
433f5bc1 JB |
417 | #ifdef CONFIG_MAC80211_MESH |
418 | kfree(sta->mesh); | |
419 | #endif | |
ba8c3d6f FF |
420 | kfree(sta); |
421 | return NULL; | |
73651ee6 JB |
422 | } |
423 | ||
8c71df7a | 424 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 425 | { |
34e89507 | 426 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 427 | |
03e4497e JB |
428 | /* |
429 | * Can't be a WARN_ON because it can be triggered through a race: | |
430 | * something inserts a STA (on one CPU) without holding the RTNL | |
431 | * and another CPU turns off the net device. | |
432 | */ | |
8c71df7a GE |
433 | if (unlikely(!ieee80211_sdata_running(sdata))) |
434 | return -ENETDOWN; | |
03e4497e | 435 | |
b203ca39 | 436 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
437 | is_multicast_ether_addr(sta->sta.addr))) |
438 | return -EINVAL; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
f09603a2 JB |
443 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
444 | struct ieee80211_sub_if_data *sdata, | |
445 | struct sta_info *sta) | |
446 | { | |
447 | enum ieee80211_sta_state state; | |
448 | int err = 0; | |
449 | ||
450 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
451 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
452 | if (err) | |
453 | break; | |
454 | } | |
455 | ||
456 | if (!err) { | |
a4ec45a4 JB |
457 | /* |
458 | * Drivers using legacy sta_add/sta_remove callbacks only | |
459 | * get uploaded set to true after sta_add is called. | |
460 | */ | |
461 | if (!local->ops->sta_add) | |
462 | sta->uploaded = true; | |
f09603a2 JB |
463 | return 0; |
464 | } | |
465 | ||
466 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
467 | sdata_info(sdata, |
468 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
469 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
470 | err = 0; |
471 | } | |
472 | ||
473 | /* unwind on error */ | |
474 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
475 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
476 | ||
477 | return err; | |
478 | } | |
479 | ||
8c71df7a GE |
480 | /* |
481 | * should be called with sta_mtx locked | |
482 | * this function replaces the mutex lock | |
483 | * with a RCU lock | |
484 | */ | |
4d33960b | 485 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
486 | { |
487 | struct ieee80211_local *local = sta->local; | |
488 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
7852e361 | 489 | struct station_info sinfo; |
8c71df7a GE |
490 | int err = 0; |
491 | ||
492 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 493 | |
7852e361 JB |
494 | /* check if STA exists already */ |
495 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
496 | err = -EEXIST; | |
497 | goto out_err; | |
4d33960b | 498 | } |
32bfd35d | 499 | |
7852e361 JB |
500 | local->num_sta++; |
501 | local->sta_generation++; | |
502 | smp_mb(); | |
4d33960b | 503 | |
5108ca82 JB |
504 | /* simplify things and don't accept BA sessions yet */ |
505 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
506 | ||
7852e361 JB |
507 | /* make the station visible */ |
508 | sta_info_hash_add(local, sta); | |
83d5cc01 | 509 | |
2bad7748 | 510 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 511 | |
5108ca82 JB |
512 | /* notify driver */ |
513 | err = sta_info_insert_drv_state(local, sdata, sta); | |
514 | if (err) | |
515 | goto out_remove; | |
516 | ||
7852e361 | 517 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
518 | /* accept BA sessions now */ |
519 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 520 | |
21f659bf | 521 | ieee80211_recalc_min_chandef(sdata); |
7852e361 JB |
522 | ieee80211_sta_debugfs_add(sta); |
523 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 524 | |
7852e361 JB |
525 | memset(&sinfo, 0, sizeof(sinfo)); |
526 | sinfo.filled = 0; | |
527 | sinfo.generation = local->sta_generation; | |
528 | cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
d0709a65 | 529 | |
bdcbd8e0 | 530 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 531 | |
34e89507 JB |
532 | /* move reference to rcu-protected */ |
533 | rcu_read_lock(); | |
534 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 535 | |
73651ee6 JB |
536 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
537 | mesh_accept_plinks_update(sdata); | |
538 | ||
8c71df7a | 539 | return 0; |
5108ca82 JB |
540 | out_remove: |
541 | sta_info_hash_del(local, sta); | |
542 | list_del_rcu(&sta->list); | |
543 | local->num_sta--; | |
544 | synchronize_net(); | |
545 | __cleanup_single_sta(sta); | |
4d33960b JB |
546 | out_err: |
547 | mutex_unlock(&local->sta_mtx); | |
548 | rcu_read_lock(); | |
549 | return err; | |
8c71df7a GE |
550 | } |
551 | ||
552 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
553 | { | |
554 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 555 | int err; |
8c71df7a | 556 | |
4d33960b JB |
557 | might_sleep(); |
558 | ||
8c71df7a GE |
559 | err = sta_info_insert_check(sta); |
560 | if (err) { | |
561 | rcu_read_lock(); | |
562 | goto out_free; | |
563 | } | |
564 | ||
8c71df7a GE |
565 | mutex_lock(&local->sta_mtx); |
566 | ||
4d33960b | 567 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
568 | if (err) |
569 | goto out_free; | |
570 | ||
73651ee6 | 571 | return 0; |
93e5deb1 | 572 | out_free: |
d9a7ddb0 | 573 | sta_info_free(local, sta); |
93e5deb1 | 574 | return err; |
f0706e82 JB |
575 | } |
576 | ||
34e89507 JB |
577 | int sta_info_insert(struct sta_info *sta) |
578 | { | |
579 | int err = sta_info_insert_rcu(sta); | |
580 | ||
581 | rcu_read_unlock(); | |
582 | ||
583 | return err; | |
584 | } | |
585 | ||
d012a605 | 586 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
587 | { |
588 | /* | |
589 | * This format has been mandated by the IEEE specifications, | |
590 | * so this line may not be changed to use the __set_bit() format. | |
591 | */ | |
d012a605 | 592 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
593 | } |
594 | ||
d012a605 | 595 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
596 | { |
597 | /* | |
598 | * This format has been mandated by the IEEE specifications, | |
599 | * so this line may not be changed to use the __clear_bit() format. | |
600 | */ | |
d012a605 | 601 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
602 | } |
603 | ||
3d5839b6 IP |
604 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
605 | { | |
606 | /* | |
607 | * This format has been mandated by the IEEE specifications, | |
608 | * so this line may not be changed to use the test_bit() format. | |
609 | */ | |
610 | return tim[id / 8] & (1 << (id % 8)); | |
611 | } | |
612 | ||
948d887d | 613 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 614 | { |
948d887d JB |
615 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
616 | switch (ac) { | |
617 | case IEEE80211_AC_VO: | |
618 | return BIT(6) | BIT(7); | |
619 | case IEEE80211_AC_VI: | |
620 | return BIT(4) | BIT(5); | |
621 | case IEEE80211_AC_BE: | |
622 | return BIT(0) | BIT(3); | |
623 | case IEEE80211_AC_BK: | |
624 | return BIT(1) | BIT(2); | |
625 | default: | |
626 | WARN_ON(1); | |
627 | return 0; | |
d0709a65 | 628 | } |
004c872e JB |
629 | } |
630 | ||
9b7a86f3 | 631 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 632 | { |
c868cb35 | 633 | struct ieee80211_local *local = sta->local; |
d012a605 | 634 | struct ps_data *ps; |
948d887d JB |
635 | bool indicate_tim = false; |
636 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
637 | int ac; | |
a69bd8e6 | 638 | u16 id = sta->sta.aid; |
d012a605 MP |
639 | |
640 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
641 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
642 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
643 | return; | |
004c872e | 644 | |
d012a605 | 645 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
646 | #ifdef CONFIG_MAC80211_MESH |
647 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
648 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 649 | #endif |
d012a605 | 650 | } else { |
c868cb35 | 651 | return; |
d012a605 | 652 | } |
3e122be0 | 653 | |
c868cb35 | 654 | /* No need to do anything if the driver does all */ |
30686bf7 | 655 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
c868cb35 | 656 | return; |
004c872e | 657 | |
c868cb35 JB |
658 | if (sta->dead) |
659 | goto done; | |
3e122be0 | 660 | |
948d887d JB |
661 | /* |
662 | * If all ACs are delivery-enabled then we should build | |
663 | * the TIM bit for all ACs anyway; if only some are then | |
664 | * we ignore those and build the TIM bit using only the | |
665 | * non-enabled ones. | |
666 | */ | |
667 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
668 | ignore_for_tim = 0; | |
669 | ||
9b7a86f3 JB |
670 | if (ignore_pending) |
671 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
672 | ||
948d887d JB |
673 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
674 | unsigned long tids; | |
3e122be0 | 675 | |
948d887d JB |
676 | if (ignore_for_tim & BIT(ac)) |
677 | continue; | |
678 | ||
679 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
680 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
681 | if (indicate_tim) | |
682 | break; | |
3e122be0 | 683 | |
948d887d JB |
684 | tids = ieee80211_tids_for_ac(ac); |
685 | ||
686 | indicate_tim |= | |
687 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
688 | indicate_tim |= |
689 | sta->txq_buffered_tids & tids; | |
d0709a65 | 690 | } |
004c872e | 691 | |
c868cb35 | 692 | done: |
65f704a5 | 693 | spin_lock_bh(&local->tim_lock); |
004c872e | 694 | |
3d5839b6 IP |
695 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
696 | goto out_unlock; | |
697 | ||
948d887d | 698 | if (indicate_tim) |
d012a605 | 699 | __bss_tim_set(ps->tim, id); |
c868cb35 | 700 | else |
d012a605 | 701 | __bss_tim_clear(ps->tim, id); |
004c872e | 702 | |
9b7a86f3 | 703 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 704 | local->tim_in_locked_section = true; |
948d887d | 705 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
706 | local->tim_in_locked_section = false; |
707 | } | |
3e122be0 | 708 | |
3d5839b6 | 709 | out_unlock: |
65f704a5 | 710 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
711 | } |
712 | ||
9b7a86f3 JB |
713 | void sta_info_recalc_tim(struct sta_info *sta) |
714 | { | |
715 | __sta_info_recalc_tim(sta, false); | |
716 | } | |
717 | ||
cd0b8d89 | 718 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 719 | { |
e039fa4a | 720 | struct ieee80211_tx_info *info; |
f0706e82 JB |
721 | int timeout; |
722 | ||
723 | if (!skb) | |
cd0b8d89 | 724 | return false; |
f0706e82 | 725 | |
e039fa4a | 726 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
727 | |
728 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
729 | timeout = (sta->listen_interval * |
730 | sta->sdata->vif.bss_conf.beacon_int * | |
731 | 32 / 15625) * HZ; | |
f0706e82 JB |
732 | if (timeout < STA_TX_BUFFER_EXPIRE) |
733 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 734 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
735 | } |
736 | ||
737 | ||
948d887d JB |
738 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
739 | struct sta_info *sta, int ac) | |
f0706e82 JB |
740 | { |
741 | unsigned long flags; | |
742 | struct sk_buff *skb; | |
743 | ||
60750397 JB |
744 | /* |
745 | * First check for frames that should expire on the filtered | |
746 | * queue. Frames here were rejected by the driver and are on | |
747 | * a separate queue to avoid reordering with normal PS-buffered | |
748 | * frames. They also aren't accounted for right now in the | |
749 | * total_ps_buffered counter. | |
750 | */ | |
751 | for (;;) { | |
948d887d JB |
752 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
753 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 754 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 755 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
756 | else |
757 | skb = NULL; | |
948d887d | 758 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
759 | |
760 | /* | |
761 | * Frames are queued in order, so if this one | |
762 | * hasn't expired yet we can stop testing. If | |
763 | * we actually reached the end of the queue we | |
764 | * also need to stop, of course. | |
765 | */ | |
766 | if (!skb) | |
767 | break; | |
d4fa14cd | 768 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
769 | } |
770 | ||
771 | /* | |
772 | * Now also check the normal PS-buffered queue, this will | |
773 | * only find something if the filtered queue was emptied | |
774 | * since the filtered frames are all before the normal PS | |
775 | * buffered frames. | |
776 | */ | |
f0706e82 | 777 | for (;;) { |
948d887d JB |
778 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
779 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 780 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 781 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 782 | else |
f0706e82 | 783 | skb = NULL; |
948d887d | 784 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 785 | |
60750397 JB |
786 | /* |
787 | * frames are queued in order, so if this one | |
788 | * hasn't expired yet (or we reached the end of | |
789 | * the queue) we can stop testing | |
790 | */ | |
836341a7 | 791 | if (!skb) |
f0706e82 | 792 | break; |
836341a7 | 793 | |
836341a7 | 794 | local->total_ps_buffered--; |
bdcbd8e0 JB |
795 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
796 | sta->sta.addr); | |
d4fa14cd | 797 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 798 | } |
3393a608 | 799 | |
60750397 JB |
800 | /* |
801 | * Finally, recalculate the TIM bit for this station -- it might | |
802 | * now be clear because the station was too slow to retrieve its | |
803 | * frames. | |
804 | */ | |
805 | sta_info_recalc_tim(sta); | |
806 | ||
807 | /* | |
808 | * Return whether there are any frames still buffered, this is | |
809 | * used to check whether the cleanup timer still needs to run, | |
810 | * if there are no frames we don't need to rearm the timer. | |
811 | */ | |
948d887d JB |
812 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
813 | skb_queue_empty(&sta->tx_filtered[ac])); | |
814 | } | |
815 | ||
816 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
817 | struct sta_info *sta) | |
818 | { | |
819 | bool have_buffered = false; | |
820 | int ac; | |
821 | ||
3f52b7e3 MP |
822 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
823 | if (!sta->sdata->bss && | |
824 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
825 | return false; |
826 | ||
827 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
828 | have_buffered |= | |
829 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
830 | ||
831 | return have_buffered; | |
f0706e82 JB |
832 | } |
833 | ||
d778207b | 834 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 835 | { |
34e89507 JB |
836 | struct ieee80211_local *local; |
837 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 838 | int ret; |
f0706e82 | 839 | |
34e89507 | 840 | might_sleep(); |
f0706e82 | 841 | |
34e89507 JB |
842 | if (!sta) |
843 | return -ENOENT; | |
5bb644a0 | 844 | |
34e89507 JB |
845 | local = sta->local; |
846 | sdata = sta->sdata; | |
f0706e82 | 847 | |
83d5cc01 JB |
848 | lockdep_assert_held(&local->sta_mtx); |
849 | ||
098a6070 JB |
850 | /* |
851 | * Before removing the station from the driver and | |
852 | * rate control, it might still start new aggregation | |
853 | * sessions -- block that to make sure the tear-down | |
854 | * will be sufficient. | |
855 | */ | |
c2c98fde | 856 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 857 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 858 | |
34e89507 | 859 | ret = sta_info_hash_del(local, sta); |
b01711be | 860 | if (WARN_ON(ret)) |
34e89507 JB |
861 | return ret; |
862 | ||
a7a6bdd0 AN |
863 | /* |
864 | * for TDLS peers, make sure to return to the base channel before | |
865 | * removal. | |
866 | */ | |
867 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
868 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
869 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
870 | } | |
871 | ||
794454ce | 872 | list_del_rcu(&sta->list); |
4d33960b | 873 | |
6a9d1b91 JB |
874 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
875 | ||
a710c816 JB |
876 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
877 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
878 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
879 | ||
d778207b JB |
880 | return 0; |
881 | } | |
882 | ||
883 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
884 | { | |
885 | struct ieee80211_local *local = sta->local; | |
886 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
6f7a8d26 | 887 | struct station_info sinfo = {}; |
d778207b JB |
888 | int ret; |
889 | ||
890 | /* | |
891 | * NOTE: This assumes at least synchronize_net() was done | |
892 | * after _part1 and before _part2! | |
893 | */ | |
894 | ||
895 | might_sleep(); | |
896 | lockdep_assert_held(&local->sta_mtx); | |
897 | ||
c8782078 | 898 | /* now keys can no longer be reached */ |
6d10e46b | 899 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 900 | |
9b7a86f3 JB |
901 | /* disable TIM bit - last chance to tell driver */ |
902 | __sta_info_recalc_tim(sta, true); | |
903 | ||
34e89507 JB |
904 | sta->dead = true; |
905 | ||
34e89507 JB |
906 | local->num_sta--; |
907 | local->sta_generation++; | |
908 | ||
83d5cc01 | 909 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
910 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
911 | if (ret) { | |
83d5cc01 JB |
912 | WARN_ON_ONCE(1); |
913 | break; | |
914 | } | |
915 | } | |
d9a7ddb0 | 916 | |
f09603a2 | 917 | if (sta->uploaded) { |
f09603a2 JB |
918 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
919 | IEEE80211_STA_NOTEXIST); | |
920 | WARN_ON_ONCE(ret != 0); | |
921 | } | |
34e89507 | 922 | |
bdcbd8e0 JB |
923 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
924 | ||
6f7a8d26 JB |
925 | sta_set_sinfo(sta, &sinfo); |
926 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
ec15e68b | 927 | |
34e89507 JB |
928 | rate_control_remove_sta_debugfs(sta); |
929 | ieee80211_sta_debugfs_remove(sta); | |
21f659bf | 930 | ieee80211_recalc_min_chandef(sdata); |
34e89507 | 931 | |
d34ba216 | 932 | cleanup_single_sta(sta); |
d778207b JB |
933 | } |
934 | ||
935 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
936 | { | |
937 | int err = __sta_info_destroy_part1(sta); | |
938 | ||
939 | if (err) | |
940 | return err; | |
941 | ||
942 | synchronize_net(); | |
943 | ||
944 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
945 | |
946 | return 0; | |
4d6141c3 JS |
947 | } |
948 | ||
34e89507 | 949 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 950 | { |
34e89507 JB |
951 | struct sta_info *sta; |
952 | int ret; | |
4d6141c3 | 953 | |
34e89507 | 954 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 955 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
956 | ret = __sta_info_destroy(sta); |
957 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
958 | |
959 | return ret; | |
960 | } | |
961 | ||
34e89507 JB |
962 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
963 | const u8 *addr) | |
e9f207f0 | 964 | { |
34e89507 JB |
965 | struct sta_info *sta; |
966 | int ret; | |
e9f207f0 | 967 | |
34e89507 | 968 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 969 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
970 | ret = __sta_info_destroy(sta); |
971 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 972 | |
34e89507 JB |
973 | return ret; |
974 | } | |
e9f207f0 | 975 | |
34e89507 JB |
976 | static void sta_info_cleanup(unsigned long data) |
977 | { | |
978 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
979 | struct sta_info *sta; | |
3393a608 | 980 | bool timer_needed = false; |
34e89507 JB |
981 | |
982 | rcu_read_lock(); | |
983 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
984 | if (sta_info_cleanup_expire_buffered(local, sta)) |
985 | timer_needed = true; | |
34e89507 | 986 | rcu_read_unlock(); |
e9f207f0 | 987 | |
34e89507 JB |
988 | if (local->quiescing) |
989 | return; | |
d0709a65 | 990 | |
3393a608 JO |
991 | if (!timer_needed) |
992 | return; | |
993 | ||
26d59535 JB |
994 | mod_timer(&local->sta_cleanup, |
995 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 996 | } |
e9f207f0 | 997 | |
7bedd0cf | 998 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 999 | { |
7bedd0cf JB |
1000 | return jhash(key, ETH_ALEN, seed); |
1001 | } | |
1002 | ||
1003 | int sta_info_init(struct ieee80211_local *local) | |
1004 | { | |
1005 | int err; | |
1006 | ||
1007 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
1008 | if (err) | |
1009 | return err; | |
1010 | ||
4d33960b | 1011 | spin_lock_init(&local->tim_lock); |
34e89507 | 1012 | mutex_init(&local->sta_mtx); |
f0706e82 | 1013 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1014 | |
b24b8a24 PE |
1015 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
1016 | (unsigned long)local); | |
7bedd0cf | 1017 | return 0; |
f0706e82 JB |
1018 | } |
1019 | ||
1020 | void sta_info_stop(struct ieee80211_local *local) | |
1021 | { | |
a56f992c | 1022 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 1023 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
1024 | } |
1025 | ||
051007d9 | 1026 | |
e716251d | 1027 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1028 | { |
b998e8bb | 1029 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1030 | struct sta_info *sta, *tmp; |
d778207b | 1031 | LIST_HEAD(free_list); |
44213b5e | 1032 | int ret = 0; |
f0706e82 | 1033 | |
d0709a65 | 1034 | might_sleep(); |
be8755e1 | 1035 | |
e716251d JB |
1036 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1037 | WARN_ON(vlans && !sdata->bss); | |
1038 | ||
34e89507 | 1039 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1040 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1041 | if (sdata == sta->sdata || |
1042 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1043 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1044 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1045 | ret++; |
1046 | } | |
be8755e1 | 1047 | } |
d778207b JB |
1048 | |
1049 | if (!list_empty(&free_list)) { | |
1050 | synchronize_net(); | |
1051 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1052 | __sta_info_destroy_part2(sta); | |
1053 | } | |
34e89507 | 1054 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1055 | |
051007d9 JB |
1056 | return ret; |
1057 | } | |
1058 | ||
24723d1b JB |
1059 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1060 | unsigned long exp_time) | |
1061 | { | |
1062 | struct ieee80211_local *local = sdata->local; | |
1063 | struct sta_info *sta, *tmp; | |
24723d1b | 1064 | |
34e89507 | 1065 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1066 | |
1067 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
ec2b774e ML |
1068 | if (sdata != sta->sdata) |
1069 | continue; | |
1070 | ||
24723d1b | 1071 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
eea57d42 MSS |
1072 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1073 | sta->sta.addr); | |
3f52b7e3 MP |
1074 | |
1075 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1076 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1077 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1078 | ||
34e89507 | 1079 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1080 | } |
e46a2cf9 MSS |
1081 | } |
1082 | ||
34e89507 | 1083 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1084 | } |
17741cdc | 1085 | |
686b9cb9 | 1086 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1087 | const u8 *addr, |
1088 | const u8 *localaddr) | |
17741cdc | 1089 | { |
7bedd0cf JB |
1090 | struct ieee80211_local *local = hw_to_local(hw); |
1091 | struct sta_info *sta; | |
1092 | struct rhash_head *tmp; | |
1093 | const struct bucket_table *tbl; | |
1094 | ||
1095 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1096 | |
686b9cb9 BG |
1097 | /* |
1098 | * Just return a random station if localaddr is NULL | |
1099 | * ... first in list. | |
1100 | */ | |
7bedd0cf | 1101 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1102 | if (localaddr && |
b203ca39 | 1103 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1104 | continue; |
f7c65594 JB |
1105 | if (!sta->uploaded) |
1106 | return NULL; | |
abe60632 | 1107 | return &sta->sta; |
f7c65594 JB |
1108 | } |
1109 | ||
abe60632 | 1110 | return NULL; |
17741cdc | 1111 | } |
686b9cb9 | 1112 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1113 | |
1114 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1115 | const u8 *addr) | |
1116 | { | |
f7c65594 | 1117 | struct sta_info *sta; |
5ed176e1 JB |
1118 | |
1119 | if (!vif) | |
1120 | return NULL; | |
1121 | ||
f7c65594 JB |
1122 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1123 | if (!sta) | |
1124 | return NULL; | |
1125 | ||
1126 | if (!sta->uploaded) | |
1127 | return NULL; | |
5ed176e1 | 1128 | |
f7c65594 | 1129 | return &sta->sta; |
5ed176e1 | 1130 | } |
17741cdc | 1131 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1132 | |
e3685e03 JB |
1133 | /* powersave support code */ |
1134 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1135 | { |
608383bf | 1136 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1137 | struct ieee80211_local *local = sdata->local; |
1138 | struct sk_buff_head pending; | |
ba8c3d6f | 1139 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1140 | unsigned long flags; |
d012a605 MP |
1141 | struct ps_data *ps; |
1142 | ||
3918edb0 FF |
1143 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1144 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1145 | u.ap); | |
1146 | ||
1147 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1148 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1149 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1150 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1151 | else |
1152 | return; | |
50a9432d | 1153 | |
c2c98fde | 1154 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1155 | |
5a306f58 | 1156 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1157 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1158 | sta->txq_buffered_tids = 0; |
af818581 | 1159 | |
30686bf7 | 1160 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1161 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1162 | |
ba8c3d6f FF |
1163 | if (sta->sta.txq[0]) { |
1164 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1165 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1166 | ||
1167 | if (!skb_queue_len(&txqi->queue)) | |
1168 | continue; | |
1169 | ||
1170 | drv_wake_tx_queue(local, txqi); | |
1171 | } | |
1172 | } | |
1173 | ||
948d887d | 1174 | skb_queue_head_init(&pending); |
af818581 | 1175 | |
1d147bfa EG |
1176 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1177 | spin_lock(&sta->ps_lock); | |
af818581 | 1178 | /* Send all buffered frames to the station */ |
948d887d JB |
1179 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1180 | int count = skb_queue_len(&pending), tmp; | |
1181 | ||
987c285c | 1182 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1183 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1184 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1185 | tmp = skb_queue_len(&pending); |
1186 | filtered += tmp - count; | |
1187 | count = tmp; | |
1188 | ||
987c285c | 1189 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1190 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1191 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1192 | tmp = skb_queue_len(&pending); |
1193 | buffered += tmp - count; | |
1194 | } | |
1195 | ||
e3685e03 | 1196 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1197 | |
1198 | /* now we're no longer in the deliver code */ | |
1199 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1200 | ||
1201 | /* The station might have polled and then woken up before we responded, | |
1202 | * so clear these flags now to avoid them sticking around. | |
1203 | */ | |
1204 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1205 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1206 | spin_unlock(&sta->ps_lock); |
948d887d | 1207 | |
e3685e03 JB |
1208 | atomic_dec(&ps->num_sta_ps); |
1209 | ||
687da132 | 1210 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1211 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1212 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1213 | sdata->smps_mode) && |
1214 | sta->known_smps_mode != sdata->bss->req_smps && | |
1215 | sta_info_tx_streams(sta) != 1) { | |
1216 | ht_dbg(sdata, | |
1217 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1218 | sta->sta.addr); | |
1219 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1220 | sta->sta.addr, | |
1221 | sdata->vif.bss_conf.bssid); | |
1222 | } | |
1223 | ||
af818581 JB |
1224 | local->total_ps_buffered -= buffered; |
1225 | ||
c868cb35 JB |
1226 | sta_info_recalc_tim(sta); |
1227 | ||
bdcbd8e0 JB |
1228 | ps_dbg(sdata, |
1229 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1230 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
17c18bf8 JB |
1231 | |
1232 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1233 | } |
1234 | ||
ce662b44 JB |
1235 | static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, |
1236 | struct sta_info *sta, int tid, | |
b77cf4f8 JB |
1237 | enum ieee80211_frame_release_type reason, |
1238 | bool call_driver) | |
af818581 | 1239 | { |
af818581 | 1240 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1241 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1242 | struct sk_buff *skb; |
ce662b44 JB |
1243 | int size = sizeof(*nullfunc); |
1244 | __le16 fc; | |
a74a8c84 | 1245 | bool qos = sta->sta.wme; |
ce662b44 | 1246 | struct ieee80211_tx_info *info; |
55de908a | 1247 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1248 | |
ce662b44 JB |
1249 | if (qos) { |
1250 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1251 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1252 | IEEE80211_FCTL_FROMDS); | |
1253 | } else { | |
1254 | size -= 2; | |
1255 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1256 | IEEE80211_STYPE_NULLFUNC | | |
1257 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1258 | } |
af818581 | 1259 | |
ce662b44 JB |
1260 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1261 | if (!skb) | |
1262 | return; | |
1263 | ||
1264 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1265 | ||
1266 | nullfunc = (void *) skb_put(skb, size); | |
1267 | nullfunc->frame_control = fc; | |
1268 | nullfunc->duration_id = 0; | |
1269 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1270 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1271 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1272 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1273 | |
59b66255 JB |
1274 | skb->priority = tid; |
1275 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1276 | if (qos) { |
ce662b44 JB |
1277 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1278 | ||
40b96408 | 1279 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
ce662b44 JB |
1280 | nullfunc->qos_ctrl |= |
1281 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
1282 | } | |
1283 | ||
1284 | info = IEEE80211_SKB_CB(skb); | |
1285 | ||
1286 | /* | |
1287 | * Tell TX path to send this frame even though the | |
1288 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1289 | * exchange. Also set EOSP to indicate this packet |
1290 | * ends the poll/service period. | |
ce662b44 | 1291 | */ |
02f2f1a9 | 1292 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1293 | IEEE80211_TX_STATUS_EOSP | |
1294 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1295 | |
6b127c71 SM |
1296 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1297 | ||
b77cf4f8 JB |
1298 | if (call_driver) |
1299 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1300 | reason, false); | |
40b96408 | 1301 | |
89afe614 JB |
1302 | skb->dev = sdata->dev; |
1303 | ||
55de908a JB |
1304 | rcu_read_lock(); |
1305 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1306 | if (WARN_ON(!chanctx_conf)) { | |
1307 | rcu_read_unlock(); | |
1308 | kfree_skb(skb); | |
1309 | return; | |
1310 | } | |
1311 | ||
73c4e195 | 1312 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1313 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1314 | rcu_read_unlock(); |
ce662b44 JB |
1315 | } |
1316 | ||
0a1cb809 JB |
1317 | static int find_highest_prio_tid(unsigned long tids) |
1318 | { | |
1319 | /* lower 3 TIDs aren't ordered perfectly */ | |
1320 | if (tids & 0xF8) | |
1321 | return fls(tids) - 1; | |
1322 | /* TID 0 is BE just like TID 3 */ | |
1323 | if (tids & BIT(0)) | |
1324 | return 0; | |
1325 | return fls(tids) - 1; | |
1326 | } | |
1327 | ||
47086fc5 JB |
1328 | static void |
1329 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1330 | int n_frames, u8 ignored_acs, | |
1331 | enum ieee80211_frame_release_type reason) | |
af818581 JB |
1332 | { |
1333 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1334 | struct ieee80211_local *local = sdata->local; | |
948d887d JB |
1335 | bool more_data = false; |
1336 | int ac; | |
4049e09a | 1337 | unsigned long driver_release_tids = 0; |
47086fc5 | 1338 | struct sk_buff_head frames; |
af818581 | 1339 | |
deeaee19 | 1340 | /* Service or PS-Poll period starts */ |
c2c98fde | 1341 | set_sta_flag(sta, WLAN_STA_SP); |
deeaee19 | 1342 | |
47086fc5 | 1343 | __skb_queue_head_init(&frames); |
948d887d | 1344 | |
f9f760b4 | 1345 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1346 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1347 | unsigned long tids; |
1348 | ||
47086fc5 | 1349 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1350 | continue; |
1351 | ||
4049e09a JB |
1352 | tids = ieee80211_tids_for_ac(ac); |
1353 | ||
f9f760b4 JB |
1354 | /* if we already have frames from software, then we can't also |
1355 | * release from hardware queues | |
1356 | */ | |
ba8c3d6f | 1357 | if (skb_queue_empty(&frames)) { |
f9f760b4 | 1358 | driver_release_tids |= sta->driver_buffered_tids & tids; |
ba8c3d6f FF |
1359 | driver_release_tids |= sta->txq_buffered_tids & tids; |
1360 | } | |
948d887d | 1361 | |
f9f760b4 JB |
1362 | if (driver_release_tids) { |
1363 | /* If the driver has data on more than one TID then | |
4049e09a | 1364 | * certainly there's more data if we release just a |
f9f760b4 JB |
1365 | * single frame now (from a single TID). This will |
1366 | * only happen for PS-Poll. | |
4049e09a | 1367 | */ |
47086fc5 JB |
1368 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
1369 | hweight16(driver_release_tids) > 1) { | |
4049e09a JB |
1370 | more_data = true; |
1371 | driver_release_tids = | |
0a1cb809 JB |
1372 | BIT(find_highest_prio_tid( |
1373 | driver_release_tids)); | |
4049e09a JB |
1374 | break; |
1375 | } | |
f9f760b4 JB |
1376 | } else { |
1377 | struct sk_buff *skb; | |
1378 | ||
1379 | while (n_frames > 0) { | |
1380 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1381 | if (!skb) { | |
1382 | skb = skb_dequeue( | |
1383 | &sta->ps_tx_buf[ac]); | |
1384 | if (skb) | |
1385 | local->total_ps_buffered--; | |
1386 | } | |
1387 | if (!skb) | |
1388 | break; | |
1389 | n_frames--; | |
1390 | __skb_queue_tail(&frames, skb); | |
1391 | } | |
4049e09a | 1392 | } |
948d887d | 1393 | |
f9f760b4 JB |
1394 | /* If we have more frames buffered on this AC, then set the |
1395 | * more-data bit and abort the loop since we can't send more | |
1396 | * data from other ACs before the buffered frames from this. | |
1397 | */ | |
948d887d JB |
1398 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
1399 | !skb_queue_empty(&sta->ps_tx_buf[ac])) { | |
1400 | more_data = true; | |
1401 | break; | |
1402 | } | |
af818581 | 1403 | } |
af818581 | 1404 | |
f9f760b4 | 1405 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1406 | int tid; |
af818581 JB |
1407 | |
1408 | /* | |
ce662b44 JB |
1409 | * For PS-Poll, this can only happen due to a race condition |
1410 | * when we set the TIM bit and the station notices it, but | |
1411 | * before it can poll for the frame we expire it. | |
1412 | * | |
1413 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1414 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1415 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1416 | * more than the value specified in the Max SP Length field | |
1417 | * in the QoS Capability element from delivery-enabled ACs, | |
1418 | * that are destined for the non-AP STA. | |
1419 | * | |
1420 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1421 | */ |
af818581 | 1422 | |
ce662b44 JB |
1423 | /* This will evaluate to 1, 3, 5 or 7. */ |
1424 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1425 | |
b77cf4f8 | 1426 | ieee80211_send_null_response(sdata, sta, tid, reason, true); |
f9f760b4 | 1427 | } else if (!driver_release_tids) { |
47086fc5 JB |
1428 | struct sk_buff_head pending; |
1429 | struct sk_buff *skb; | |
40b96408 JB |
1430 | int num = 0; |
1431 | u16 tids = 0; | |
b77cf4f8 | 1432 | bool need_null = false; |
af818581 | 1433 | |
47086fc5 | 1434 | skb_queue_head_init(&pending); |
af818581 | 1435 | |
47086fc5 JB |
1436 | while ((skb = __skb_dequeue(&frames))) { |
1437 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1438 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1439 | u8 *qoshdr = NULL; |
1440 | ||
1441 | num++; | |
af818581 | 1442 | |
47086fc5 JB |
1443 | /* |
1444 | * Tell TX path to send this frame even though the | |
1445 | * STA may still remain is PS mode after this frame | |
1446 | * exchange. | |
1447 | */ | |
6b127c71 SM |
1448 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1449 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1450 | |
1451 | /* | |
1452 | * Use MoreData flag to indicate whether there are | |
1453 | * more buffered frames for this STA | |
1454 | */ | |
24b9c373 | 1455 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1456 | hdr->frame_control |= |
1457 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1458 | else |
1459 | hdr->frame_control &= | |
1460 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1461 | |
40b96408 JB |
1462 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1463 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1464 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1465 | ||
b77cf4f8 | 1466 | tids |= BIT(skb->priority); |
52a3f20c | 1467 | |
b77cf4f8 JB |
1468 | __skb_queue_tail(&pending, skb); |
1469 | ||
1470 | /* end service period after last frame or add one */ | |
1471 | if (!skb_queue_empty(&frames)) | |
1472 | continue; | |
1473 | ||
1474 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1475 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1476 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1477 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1478 | break; |
52a3f20c | 1479 | } |
deeaee19 | 1480 | |
b77cf4f8 JB |
1481 | /* For uAPSD, things are a bit more complicated. If the |
1482 | * last frame has a QoS header (i.e. is a QoS-data or | |
1483 | * QoS-nulldata frame) then just set the EOSP bit there | |
1484 | * and be done. | |
1485 | * If the frame doesn't have a QoS header (which means | |
1486 | * it should be a bufferable MMPDU) then we can't set | |
1487 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1488 | * frame to the list to send it after the MMPDU. | |
1489 | * | |
1490 | * Note that this code is only in the mac80211-release | |
1491 | * code path, we assume that the driver will not buffer | |
1492 | * anything but QoS-data frames, or if it does, will | |
1493 | * create the QoS-nulldata frame by itself if needed. | |
1494 | * | |
1495 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1496 | */ | |
1497 | if (qoshdr) { | |
1498 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1499 | |
b77cf4f8 JB |
1500 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1501 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1502 | } else { | |
1503 | /* The standard isn't completely clear on this | |
1504 | * as it says the more-data bit should be set | |
1505 | * if there are more BUs. The QoS-Null frame | |
1506 | * we're about to send isn't buffered yet, we | |
1507 | * only create it below, but let's pretend it | |
1508 | * was buffered just in case some clients only | |
1509 | * expect more-data=0 when eosp=1. | |
1510 | */ | |
1511 | hdr->frame_control |= | |
1512 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1513 | need_null = true; | |
1514 | num++; | |
1515 | } | |
1516 | break; | |
47086fc5 | 1517 | } |
af818581 | 1518 | |
40b96408 JB |
1519 | drv_allow_buffered_frames(local, sta, tids, num, |
1520 | reason, more_data); | |
1521 | ||
47086fc5 | 1522 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1523 | |
b77cf4f8 JB |
1524 | if (need_null) |
1525 | ieee80211_send_null_response( | |
1526 | sdata, sta, find_highest_prio_tid(tids), | |
1527 | reason, false); | |
1528 | ||
c868cb35 | 1529 | sta_info_recalc_tim(sta); |
af818581 | 1530 | } else { |
ba8c3d6f FF |
1531 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1532 | int tid; | |
1533 | ||
af818581 | 1534 | /* |
4049e09a JB |
1535 | * We need to release a frame that is buffered somewhere in the |
1536 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1537 | * Note that the driver also has to check the number of frames |
1538 | * on the TIDs we're releasing from - if there are more than | |
1539 | * n_frames it has to set the more-data bit (if we didn't ask | |
1540 | * it to set it anyway due to other buffered frames); if there | |
1541 | * are fewer than n_frames it has to make sure to adjust that | |
1542 | * to allow the service period to end properly. | |
4049e09a JB |
1543 | */ |
1544 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1545 | n_frames, reason, more_data); |
4049e09a JB |
1546 | |
1547 | /* | |
1548 | * Note that we don't recalculate the TIM bit here as it would | |
1549 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1550 | * that the TID(s) became empty before returning here from the |
4049e09a | 1551 | * release function. |
f9f760b4 | 1552 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1553 | * became empty or we find that a txq became empty, we'll do the |
1554 | * TIM recalculation. | |
af818581 | 1555 | */ |
ba8c3d6f FF |
1556 | |
1557 | if (!sta->sta.txq[0]) | |
1558 | return; | |
1559 | ||
1560 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1561 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1562 | ||
1563 | if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue)) | |
1564 | continue; | |
1565 | ||
1566 | sta_info_recalc_tim(sta); | |
1567 | break; | |
1568 | } | |
af818581 JB |
1569 | } |
1570 | } | |
1571 | ||
47086fc5 JB |
1572 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1573 | { | |
1574 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1575 | ||
1576 | /* | |
1577 | * If all ACs are delivery-enabled then we should reply | |
1578 | * from any of them, if only some are enabled we reply | |
1579 | * only from the non-enabled ones. | |
1580 | */ | |
1581 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1582 | ignore_for_response = 0; | |
1583 | ||
1584 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1585 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1586 | } | |
1587 | ||
1588 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1589 | { | |
1590 | int n_frames = sta->sta.max_sp; | |
1591 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1592 | ||
1593 | /* | |
1594 | * If we ever grow support for TSPEC this might happen if | |
1595 | * the TSPEC update from hostapd comes in between a trigger | |
1596 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1597 | * actually getting called. | |
1598 | */ | |
1599 | if (!delivery_enabled) | |
1600 | return; | |
1601 | ||
47086fc5 JB |
1602 | switch (sta->sta.max_sp) { |
1603 | case 1: | |
1604 | n_frames = 2; | |
1605 | break; | |
1606 | case 2: | |
1607 | n_frames = 4; | |
1608 | break; | |
1609 | case 3: | |
1610 | n_frames = 6; | |
1611 | break; | |
1612 | case 0: | |
1613 | /* XXX: what is a good value? */ | |
13a8098a | 1614 | n_frames = 128; |
47086fc5 JB |
1615 | break; |
1616 | } | |
1617 | ||
1618 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1619 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1620 | } | |
1621 | ||
af818581 JB |
1622 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1623 | struct ieee80211_sta *pubsta, bool block) | |
1624 | { | |
1625 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1626 | ||
b5878a2d JB |
1627 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1628 | ||
5ac2e350 | 1629 | if (block) { |
c2c98fde | 1630 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1631 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1632 | return; |
1633 | } | |
1634 | ||
1635 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1636 | return; | |
1637 | ||
1638 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1639 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1640 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1641 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1642 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1643 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1644 | /* must be asleep in this case */ | |
1645 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1646 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1647 | } else { | |
1648 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1649 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1650 | } |
af818581 JB |
1651 | } |
1652 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1653 | |
e943789e | 1654 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1655 | { |
1656 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1657 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1658 | |
1659 | trace_api_eosp(local, pubsta); | |
1660 | ||
e943789e | 1661 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1662 | } |
e943789e | 1663 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1664 | |
042ec453 JB |
1665 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1666 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1667 | { |
1668 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1669 | ||
5a306f58 | 1670 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1671 | return; |
1672 | ||
1b000789 JB |
1673 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1674 | ||
948d887d JB |
1675 | if (buffered) |
1676 | set_bit(tid, &sta->driver_buffered_tids); | |
1677 | else | |
1678 | clear_bit(tid, &sta->driver_buffered_tids); | |
1679 | ||
c868cb35 | 1680 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1681 | } |
042ec453 | 1682 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1683 | |
83d5cc01 JB |
1684 | int sta_info_move_state(struct sta_info *sta, |
1685 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1686 | { |
8bf11d8d | 1687 | might_sleep(); |
d9a7ddb0 JB |
1688 | |
1689 | if (sta->sta_state == new_state) | |
1690 | return 0; | |
1691 | ||
f09603a2 JB |
1692 | /* check allowed transitions first */ |
1693 | ||
1694 | switch (new_state) { | |
1695 | case IEEE80211_STA_NONE: | |
1696 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1697 | return -EINVAL; | |
1698 | break; | |
1699 | case IEEE80211_STA_AUTH: | |
1700 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1701 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1702 | return -EINVAL; | |
1703 | break; | |
1704 | case IEEE80211_STA_ASSOC: | |
1705 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1706 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1707 | return -EINVAL; | |
1708 | break; | |
1709 | case IEEE80211_STA_AUTHORIZED: | |
1710 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1711 | return -EINVAL; | |
1712 | break; | |
1713 | default: | |
1714 | WARN(1, "invalid state %d", new_state); | |
1715 | return -EINVAL; | |
1716 | } | |
1717 | ||
bdcbd8e0 JB |
1718 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1719 | sta->sta.addr, new_state); | |
f09603a2 JB |
1720 | |
1721 | /* | |
1722 | * notify the driver before the actual changes so it can | |
1723 | * fail the transition | |
1724 | */ | |
1725 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1726 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1727 | sta->sta_state, new_state); | |
1728 | if (err) | |
1729 | return err; | |
1730 | } | |
1731 | ||
1732 | /* reflect the change in all state variables */ | |
1733 | ||
d9a7ddb0 JB |
1734 | switch (new_state) { |
1735 | case IEEE80211_STA_NONE: | |
1736 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1737 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1738 | break; |
1739 | case IEEE80211_STA_AUTH: | |
1740 | if (sta->sta_state == IEEE80211_STA_NONE) | |
1741 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1742 | else if (sta->sta_state == IEEE80211_STA_ASSOC) | |
1743 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
d9a7ddb0 JB |
1744 | break; |
1745 | case IEEE80211_STA_ASSOC: | |
29623892 | 1746 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1747 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
29623892 | 1748 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1749 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1750 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1751 | !sta->sdata->u.vlan.sta)) | |
1752 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1753 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1754 | ieee80211_clear_fast_xmit(sta); |
f09603a2 | 1755 | } |
d9a7ddb0 JB |
1756 | break; |
1757 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1758 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1759 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1760 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1761 | !sta->sdata->u.vlan.sta)) | |
1762 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1763 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1764 | ieee80211_check_fast_xmit(sta); |
f09603a2 | 1765 | } |
d9a7ddb0 JB |
1766 | break; |
1767 | default: | |
f09603a2 | 1768 | break; |
d9a7ddb0 JB |
1769 | } |
1770 | ||
d9a7ddb0 JB |
1771 | sta->sta_state = new_state; |
1772 | ||
1773 | return 0; | |
1774 | } | |
687da132 EG |
1775 | |
1776 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1777 | { | |
1778 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1779 | u8 rx_streams; | |
1780 | ||
1781 | if (!sta->sta.ht_cap.ht_supported) | |
1782 | return 1; | |
1783 | ||
1784 | if (sta->sta.vht_cap.vht_supported) { | |
1785 | int i; | |
1786 | u16 tx_mcs_map = | |
1787 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1788 | ||
1789 | for (i = 7; i >= 0; i--) | |
1790 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1791 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1792 | return i + 1; | |
1793 | } | |
1794 | ||
1795 | if (ht_cap->mcs.rx_mask[3]) | |
1796 | rx_streams = 4; | |
1797 | else if (ht_cap->mcs.rx_mask[2]) | |
1798 | rx_streams = 3; | |
1799 | else if (ht_cap->mcs.rx_mask[1]) | |
1800 | rx_streams = 2; | |
1801 | else | |
1802 | rx_streams = 1; | |
1803 | ||
1804 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1805 | return rx_streams; | |
1806 | ||
1807 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1808 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1809 | } | |
b7ffbd7e JB |
1810 | |
1811 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) | |
1812 | { | |
1813 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1814 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 1815 | struct rate_control_ref *ref = NULL; |
b7ffbd7e | 1816 | struct timespec uptime; |
b7ffbd7e JB |
1817 | u32 thr = 0; |
1818 | int i, ac; | |
1819 | ||
9a244409 JL |
1820 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
1821 | ref = local->rate_ctrl; | |
1822 | ||
b7ffbd7e JB |
1823 | sinfo->generation = sdata->local->sta_generation; |
1824 | ||
225b8189 JB |
1825 | /* do before driver, so beacon filtering drivers have a |
1826 | * chance to e.g. just add the number of filtered beacons | |
1827 | * (or just modify the value entirely, of course) | |
1828 | */ | |
1829 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1830 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
1831 | ||
2b9a7e1b JB |
1832 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
1833 | ||
319090bf JB |
1834 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
1835 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
1836 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
1837 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
1838 | BIT(NL80211_STA_INFO_RX_DROP_MISC) | | |
1839 | BIT(NL80211_STA_INFO_BEACON_LOSS); | |
b7ffbd7e | 1840 | |
18171520 | 1841 | ktime_get_ts(&uptime); |
b7ffbd7e | 1842 | sinfo->connected_time = uptime.tv_sec - sta->last_connected; |
b7ffbd7e | 1843 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); |
2b9a7e1b | 1844 | |
319090bf JB |
1845 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
1846 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
1847 | sinfo->tx_bytes = 0; |
1848 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1849 | sinfo->tx_bytes += sta->tx_bytes[ac]; | |
319090bf | 1850 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
1851 | } |
1852 | ||
319090bf | 1853 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
1854 | sinfo->tx_packets = 0; |
1855 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1856 | sinfo->tx_packets += sta->tx_packets[ac]; | |
319090bf | 1857 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
1858 | } |
1859 | ||
319090bf JB |
1860 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
1861 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
2b9a7e1b | 1862 | sinfo->rx_bytes = sta->rx_bytes; |
319090bf | 1863 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
1864 | } |
1865 | ||
319090bf | 1866 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
2b9a7e1b | 1867 | sinfo->rx_packets = sta->rx_packets; |
319090bf | 1868 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
1869 | } |
1870 | ||
319090bf | 1871 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
2b9a7e1b | 1872 | sinfo->tx_retries = sta->tx_retry_count; |
319090bf | 1873 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
1874 | } |
1875 | ||
319090bf | 1876 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
2b9a7e1b | 1877 | sinfo->tx_failed = sta->tx_retry_failed; |
319090bf | 1878 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 1879 | } |
2b9a7e1b | 1880 | |
b7ffbd7e JB |
1881 | sinfo->rx_dropped_misc = sta->rx_dropped; |
1882 | sinfo->beacon_loss_count = sta->beacon_loss_count; | |
1883 | ||
225b8189 JB |
1884 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1885 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
1886 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
1887 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
1888 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
1889 | } | |
1890 | ||
30686bf7 JB |
1891 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
1892 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
319090bf | 1893 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
b7ffbd7e | 1894 | sinfo->signal = (s8)sta->last_signal; |
319090bf | 1895 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
1896 | } |
1897 | ||
319090bf | 1898 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a JB |
1899 | sinfo->signal_avg = |
1900 | (s8) -ewma_signal_read(&sta->avg_signal); | |
319090bf | 1901 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 1902 | } |
b7ffbd7e | 1903 | } |
2b9a7e1b JB |
1904 | |
1905 | if (sta->chains && | |
319090bf JB |
1906 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
1907 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
1908 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | | |
1909 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
b7ffbd7e JB |
1910 | |
1911 | sinfo->chains = sta->chains; | |
1912 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { | |
1913 | sinfo->chain_signal[i] = sta->chain_signal_last[i]; | |
1914 | sinfo->chain_signal_avg[i] = | |
40d9a38a | 1915 | (s8) -ewma_signal_read(&sta->chain_signal_avg[i]); |
b7ffbd7e JB |
1916 | } |
1917 | } | |
1918 | ||
319090bf | 1919 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
2b9a7e1b | 1920 | sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); |
319090bf | 1921 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
1922 | } |
1923 | ||
319090bf | 1924 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 1925 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 1926 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 1927 | } |
b7ffbd7e | 1928 | |
79c892b8 JB |
1929 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
1930 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
1931 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
1932 | ||
1933 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
1934 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
1935 | tidstats->rx_msdu = sta->rx_msdu[i]; | |
1936 | } | |
1937 | ||
1938 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
1939 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
1940 | tidstats->tx_msdu = sta->tx_msdu[i]; | |
1941 | } | |
1942 | ||
1943 | if (!(tidstats->filled & | |
1944 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
30686bf7 | 1945 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
1946 | tidstats->filled |= |
1947 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
1948 | tidstats->tx_msdu_retries = sta->tx_msdu_retries[i]; | |
1949 | } | |
1950 | ||
1951 | if (!(tidstats->filled & | |
1952 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
30686bf7 | 1953 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
1954 | tidstats->filled |= |
1955 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
1956 | tidstats->tx_msdu_failed = sta->tx_msdu_failed[i]; | |
1957 | } | |
1958 | } | |
1959 | ||
b7ffbd7e JB |
1960 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
1961 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
1962 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
1963 | BIT(NL80211_STA_INFO_PLID) | | |
1964 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
1965 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
1966 | BIT(NL80211_STA_INFO_PEER_PM) | | |
1967 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e | 1968 | |
433f5bc1 JB |
1969 | sinfo->llid = sta->mesh->llid; |
1970 | sinfo->plid = sta->mesh->plid; | |
1971 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 1972 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
319090bf | 1973 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 1974 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 1975 | } |
433f5bc1 JB |
1976 | sinfo->local_pm = sta->mesh->local_pm; |
1977 | sinfo->peer_pm = sta->mesh->peer_pm; | |
1978 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
b7ffbd7e JB |
1979 | #endif |
1980 | } | |
1981 | ||
1982 | sinfo->bss_param.flags = 0; | |
1983 | if (sdata->vif.bss_conf.use_cts_prot) | |
1984 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
1985 | if (sdata->vif.bss_conf.use_short_preamble) | |
1986 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
1987 | if (sdata->vif.bss_conf.use_short_slot) | |
1988 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 1989 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
1990 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
1991 | ||
1992 | sinfo->sta_flags.set = 0; | |
1993 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
1994 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
1995 | BIT(NL80211_STA_FLAG_WME) | | |
1996 | BIT(NL80211_STA_FLAG_MFP) | | |
1997 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
1998 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
1999 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2000 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2001 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2002 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2003 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2004 | if (sta->sta.wme) |
b7ffbd7e JB |
2005 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2006 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2007 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2008 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2009 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2010 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2011 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2012 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2013 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2014 | ||
2015 | /* check if the driver has a SW RC implementation */ | |
2016 | if (ref && ref->ops->get_expected_throughput) | |
2017 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2018 | else | |
2019 | thr = drv_get_expected_throughput(local, &sta->sta); | |
2020 | ||
2021 | if (thr != 0) { | |
319090bf | 2022 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
2023 | sinfo->expected_throughput = thr; |
2024 | } | |
2025 | } |