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 | ||
438 | return 0; | |
439 | } | |
440 | ||
f09603a2 JB |
441 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
442 | struct ieee80211_sub_if_data *sdata, | |
443 | struct sta_info *sta) | |
444 | { | |
445 | enum ieee80211_sta_state state; | |
446 | int err = 0; | |
447 | ||
448 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
449 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
450 | if (err) | |
451 | break; | |
452 | } | |
453 | ||
454 | if (!err) { | |
a4ec45a4 JB |
455 | /* |
456 | * Drivers using legacy sta_add/sta_remove callbacks only | |
457 | * get uploaded set to true after sta_add is called. | |
458 | */ | |
459 | if (!local->ops->sta_add) | |
460 | sta->uploaded = true; | |
f09603a2 JB |
461 | return 0; |
462 | } | |
463 | ||
464 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
465 | sdata_info(sdata, |
466 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
467 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
468 | err = 0; |
469 | } | |
470 | ||
471 | /* unwind on error */ | |
472 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
473 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
474 | ||
475 | return err; | |
476 | } | |
477 | ||
8c71df7a GE |
478 | /* |
479 | * should be called with sta_mtx locked | |
480 | * this function replaces the mutex lock | |
481 | * with a RCU lock | |
482 | */ | |
4d33960b | 483 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
484 | { |
485 | struct ieee80211_local *local = sta->local; | |
486 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
7852e361 | 487 | struct station_info sinfo; |
8c71df7a GE |
488 | int err = 0; |
489 | ||
490 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 491 | |
7852e361 JB |
492 | /* check if STA exists already */ |
493 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
494 | err = -EEXIST; | |
495 | goto out_err; | |
4d33960b | 496 | } |
32bfd35d | 497 | |
7852e361 JB |
498 | local->num_sta++; |
499 | local->sta_generation++; | |
500 | smp_mb(); | |
4d33960b | 501 | |
5108ca82 JB |
502 | /* simplify things and don't accept BA sessions yet */ |
503 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
504 | ||
7852e361 JB |
505 | /* make the station visible */ |
506 | sta_info_hash_add(local, sta); | |
83d5cc01 | 507 | |
2bad7748 | 508 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 509 | |
5108ca82 JB |
510 | /* notify driver */ |
511 | err = sta_info_insert_drv_state(local, sdata, sta); | |
512 | if (err) | |
513 | goto out_remove; | |
514 | ||
7852e361 | 515 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
516 | /* accept BA sessions now */ |
517 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 518 | |
21f659bf | 519 | ieee80211_recalc_min_chandef(sdata); |
7852e361 JB |
520 | ieee80211_sta_debugfs_add(sta); |
521 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 522 | |
7852e361 JB |
523 | memset(&sinfo, 0, sizeof(sinfo)); |
524 | sinfo.filled = 0; | |
525 | sinfo.generation = local->sta_generation; | |
526 | cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
d0709a65 | 527 | |
bdcbd8e0 | 528 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 529 | |
34e89507 JB |
530 | /* move reference to rcu-protected */ |
531 | rcu_read_lock(); | |
532 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 533 | |
73651ee6 JB |
534 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
535 | mesh_accept_plinks_update(sdata); | |
536 | ||
8c71df7a | 537 | return 0; |
5108ca82 JB |
538 | out_remove: |
539 | sta_info_hash_del(local, sta); | |
540 | list_del_rcu(&sta->list); | |
541 | local->num_sta--; | |
542 | synchronize_net(); | |
543 | __cleanup_single_sta(sta); | |
4d33960b JB |
544 | out_err: |
545 | mutex_unlock(&local->sta_mtx); | |
546 | rcu_read_lock(); | |
547 | return err; | |
8c71df7a GE |
548 | } |
549 | ||
550 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
551 | { | |
552 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 553 | int err; |
8c71df7a | 554 | |
4d33960b JB |
555 | might_sleep(); |
556 | ||
8c71df7a GE |
557 | err = sta_info_insert_check(sta); |
558 | if (err) { | |
559 | rcu_read_lock(); | |
560 | goto out_free; | |
561 | } | |
562 | ||
8c71df7a GE |
563 | mutex_lock(&local->sta_mtx); |
564 | ||
4d33960b | 565 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
566 | if (err) |
567 | goto out_free; | |
568 | ||
73651ee6 | 569 | return 0; |
93e5deb1 | 570 | out_free: |
d9a7ddb0 | 571 | sta_info_free(local, sta); |
93e5deb1 | 572 | return err; |
f0706e82 JB |
573 | } |
574 | ||
34e89507 JB |
575 | int sta_info_insert(struct sta_info *sta) |
576 | { | |
577 | int err = sta_info_insert_rcu(sta); | |
578 | ||
579 | rcu_read_unlock(); | |
580 | ||
581 | return err; | |
582 | } | |
583 | ||
d012a605 | 584 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
585 | { |
586 | /* | |
587 | * This format has been mandated by the IEEE specifications, | |
588 | * so this line may not be changed to use the __set_bit() format. | |
589 | */ | |
d012a605 | 590 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
591 | } |
592 | ||
d012a605 | 593 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
594 | { |
595 | /* | |
596 | * This format has been mandated by the IEEE specifications, | |
597 | * so this line may not be changed to use the __clear_bit() format. | |
598 | */ | |
d012a605 | 599 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
600 | } |
601 | ||
3d5839b6 IP |
602 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
603 | { | |
604 | /* | |
605 | * This format has been mandated by the IEEE specifications, | |
606 | * so this line may not be changed to use the test_bit() format. | |
607 | */ | |
608 | return tim[id / 8] & (1 << (id % 8)); | |
609 | } | |
610 | ||
948d887d | 611 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 612 | { |
948d887d JB |
613 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
614 | switch (ac) { | |
615 | case IEEE80211_AC_VO: | |
616 | return BIT(6) | BIT(7); | |
617 | case IEEE80211_AC_VI: | |
618 | return BIT(4) | BIT(5); | |
619 | case IEEE80211_AC_BE: | |
620 | return BIT(0) | BIT(3); | |
621 | case IEEE80211_AC_BK: | |
622 | return BIT(1) | BIT(2); | |
623 | default: | |
624 | WARN_ON(1); | |
625 | return 0; | |
d0709a65 | 626 | } |
004c872e JB |
627 | } |
628 | ||
9b7a86f3 | 629 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 630 | { |
c868cb35 | 631 | struct ieee80211_local *local = sta->local; |
d012a605 | 632 | struct ps_data *ps; |
948d887d JB |
633 | bool indicate_tim = false; |
634 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
635 | int ac; | |
a69bd8e6 | 636 | u16 id = sta->sta.aid; |
d012a605 MP |
637 | |
638 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
639 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
640 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
641 | return; | |
004c872e | 642 | |
d012a605 | 643 | ps = &sta->sdata->bss->ps; |
3f52b7e3 MP |
644 | #ifdef CONFIG_MAC80211_MESH |
645 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
646 | ps = &sta->sdata->u.mesh.ps; | |
3f52b7e3 | 647 | #endif |
d012a605 | 648 | } else { |
c868cb35 | 649 | return; |
d012a605 | 650 | } |
3e122be0 | 651 | |
c868cb35 | 652 | /* No need to do anything if the driver does all */ |
30686bf7 | 653 | if (ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
c868cb35 | 654 | return; |
004c872e | 655 | |
c868cb35 JB |
656 | if (sta->dead) |
657 | goto done; | |
3e122be0 | 658 | |
948d887d JB |
659 | /* |
660 | * If all ACs are delivery-enabled then we should build | |
661 | * the TIM bit for all ACs anyway; if only some are then | |
662 | * we ignore those and build the TIM bit using only the | |
663 | * non-enabled ones. | |
664 | */ | |
665 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
666 | ignore_for_tim = 0; | |
667 | ||
9b7a86f3 JB |
668 | if (ignore_pending) |
669 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
670 | ||
948d887d JB |
671 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
672 | unsigned long tids; | |
3e122be0 | 673 | |
948d887d JB |
674 | if (ignore_for_tim & BIT(ac)) |
675 | continue; | |
676 | ||
677 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
678 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
679 | if (indicate_tim) | |
680 | break; | |
3e122be0 | 681 | |
948d887d JB |
682 | tids = ieee80211_tids_for_ac(ac); |
683 | ||
684 | indicate_tim |= | |
685 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
686 | indicate_tim |= |
687 | sta->txq_buffered_tids & tids; | |
d0709a65 | 688 | } |
004c872e | 689 | |
c868cb35 | 690 | done: |
65f704a5 | 691 | spin_lock_bh(&local->tim_lock); |
004c872e | 692 | |
3d5839b6 IP |
693 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
694 | goto out_unlock; | |
695 | ||
948d887d | 696 | if (indicate_tim) |
d012a605 | 697 | __bss_tim_set(ps->tim, id); |
c868cb35 | 698 | else |
d012a605 | 699 | __bss_tim_clear(ps->tim, id); |
004c872e | 700 | |
9b7a86f3 | 701 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 702 | local->tim_in_locked_section = true; |
948d887d | 703 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
704 | local->tim_in_locked_section = false; |
705 | } | |
3e122be0 | 706 | |
3d5839b6 | 707 | out_unlock: |
65f704a5 | 708 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
709 | } |
710 | ||
9b7a86f3 JB |
711 | void sta_info_recalc_tim(struct sta_info *sta) |
712 | { | |
713 | __sta_info_recalc_tim(sta, false); | |
714 | } | |
715 | ||
cd0b8d89 | 716 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 717 | { |
e039fa4a | 718 | struct ieee80211_tx_info *info; |
f0706e82 JB |
719 | int timeout; |
720 | ||
721 | if (!skb) | |
cd0b8d89 | 722 | return false; |
f0706e82 | 723 | |
e039fa4a | 724 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
725 | |
726 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
727 | timeout = (sta->listen_interval * |
728 | sta->sdata->vif.bss_conf.beacon_int * | |
729 | 32 / 15625) * HZ; | |
f0706e82 JB |
730 | if (timeout < STA_TX_BUFFER_EXPIRE) |
731 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 732 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
733 | } |
734 | ||
735 | ||
948d887d JB |
736 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
737 | struct sta_info *sta, int ac) | |
f0706e82 JB |
738 | { |
739 | unsigned long flags; | |
740 | struct sk_buff *skb; | |
741 | ||
60750397 JB |
742 | /* |
743 | * First check for frames that should expire on the filtered | |
744 | * queue. Frames here were rejected by the driver and are on | |
745 | * a separate queue to avoid reordering with normal PS-buffered | |
746 | * frames. They also aren't accounted for right now in the | |
747 | * total_ps_buffered counter. | |
748 | */ | |
749 | for (;;) { | |
948d887d JB |
750 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
751 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 752 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 753 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
754 | else |
755 | skb = NULL; | |
948d887d | 756 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
757 | |
758 | /* | |
759 | * Frames are queued in order, so if this one | |
760 | * hasn't expired yet we can stop testing. If | |
761 | * we actually reached the end of the queue we | |
762 | * also need to stop, of course. | |
763 | */ | |
764 | if (!skb) | |
765 | break; | |
d4fa14cd | 766 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
767 | } |
768 | ||
769 | /* | |
770 | * Now also check the normal PS-buffered queue, this will | |
771 | * only find something if the filtered queue was emptied | |
772 | * since the filtered frames are all before the normal PS | |
773 | * buffered frames. | |
774 | */ | |
f0706e82 | 775 | for (;;) { |
948d887d JB |
776 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
777 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 778 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 779 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 780 | else |
f0706e82 | 781 | skb = NULL; |
948d887d | 782 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 783 | |
60750397 JB |
784 | /* |
785 | * frames are queued in order, so if this one | |
786 | * hasn't expired yet (or we reached the end of | |
787 | * the queue) we can stop testing | |
788 | */ | |
836341a7 | 789 | if (!skb) |
f0706e82 | 790 | break; |
836341a7 | 791 | |
836341a7 | 792 | local->total_ps_buffered--; |
bdcbd8e0 JB |
793 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
794 | sta->sta.addr); | |
d4fa14cd | 795 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 796 | } |
3393a608 | 797 | |
60750397 JB |
798 | /* |
799 | * Finally, recalculate the TIM bit for this station -- it might | |
800 | * now be clear because the station was too slow to retrieve its | |
801 | * frames. | |
802 | */ | |
803 | sta_info_recalc_tim(sta); | |
804 | ||
805 | /* | |
806 | * Return whether there are any frames still buffered, this is | |
807 | * used to check whether the cleanup timer still needs to run, | |
808 | * if there are no frames we don't need to rearm the timer. | |
809 | */ | |
948d887d JB |
810 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
811 | skb_queue_empty(&sta->tx_filtered[ac])); | |
812 | } | |
813 | ||
814 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
815 | struct sta_info *sta) | |
816 | { | |
817 | bool have_buffered = false; | |
818 | int ac; | |
819 | ||
3f52b7e3 MP |
820 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
821 | if (!sta->sdata->bss && | |
822 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
823 | return false; |
824 | ||
825 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
826 | have_buffered |= | |
827 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
828 | ||
829 | return have_buffered; | |
f0706e82 JB |
830 | } |
831 | ||
d778207b | 832 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 833 | { |
34e89507 JB |
834 | struct ieee80211_local *local; |
835 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 836 | int ret; |
f0706e82 | 837 | |
34e89507 | 838 | might_sleep(); |
f0706e82 | 839 | |
34e89507 JB |
840 | if (!sta) |
841 | return -ENOENT; | |
5bb644a0 | 842 | |
34e89507 JB |
843 | local = sta->local; |
844 | sdata = sta->sdata; | |
f0706e82 | 845 | |
83d5cc01 JB |
846 | lockdep_assert_held(&local->sta_mtx); |
847 | ||
098a6070 JB |
848 | /* |
849 | * Before removing the station from the driver and | |
850 | * rate control, it might still start new aggregation | |
851 | * sessions -- block that to make sure the tear-down | |
852 | * will be sufficient. | |
853 | */ | |
c2c98fde | 854 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 855 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 856 | |
34e89507 | 857 | ret = sta_info_hash_del(local, sta); |
b01711be | 858 | if (WARN_ON(ret)) |
34e89507 JB |
859 | return ret; |
860 | ||
a7a6bdd0 AN |
861 | /* |
862 | * for TDLS peers, make sure to return to the base channel before | |
863 | * removal. | |
864 | */ | |
865 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
866 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
867 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
868 | } | |
869 | ||
794454ce | 870 | list_del_rcu(&sta->list); |
4d33960b | 871 | |
6a9d1b91 JB |
872 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
873 | ||
a710c816 JB |
874 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
875 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
876 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
877 | ||
d778207b JB |
878 | return 0; |
879 | } | |
880 | ||
881 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
882 | { | |
883 | struct ieee80211_local *local = sta->local; | |
884 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
6f7a8d26 | 885 | struct station_info sinfo = {}; |
d778207b JB |
886 | int ret; |
887 | ||
888 | /* | |
889 | * NOTE: This assumes at least synchronize_net() was done | |
890 | * after _part1 and before _part2! | |
891 | */ | |
892 | ||
893 | might_sleep(); | |
894 | lockdep_assert_held(&local->sta_mtx); | |
895 | ||
c8782078 | 896 | /* now keys can no longer be reached */ |
6d10e46b | 897 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 898 | |
9b7a86f3 JB |
899 | /* disable TIM bit - last chance to tell driver */ |
900 | __sta_info_recalc_tim(sta, true); | |
901 | ||
34e89507 JB |
902 | sta->dead = true; |
903 | ||
34e89507 JB |
904 | local->num_sta--; |
905 | local->sta_generation++; | |
906 | ||
83d5cc01 | 907 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
908 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
909 | if (ret) { | |
83d5cc01 JB |
910 | WARN_ON_ONCE(1); |
911 | break; | |
912 | } | |
913 | } | |
d9a7ddb0 | 914 | |
f09603a2 | 915 | if (sta->uploaded) { |
f09603a2 JB |
916 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
917 | IEEE80211_STA_NOTEXIST); | |
918 | WARN_ON_ONCE(ret != 0); | |
919 | } | |
34e89507 | 920 | |
bdcbd8e0 JB |
921 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
922 | ||
6f7a8d26 JB |
923 | sta_set_sinfo(sta, &sinfo); |
924 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
ec15e68b | 925 | |
34e89507 JB |
926 | rate_control_remove_sta_debugfs(sta); |
927 | ieee80211_sta_debugfs_remove(sta); | |
21f659bf | 928 | ieee80211_recalc_min_chandef(sdata); |
34e89507 | 929 | |
d34ba216 | 930 | cleanup_single_sta(sta); |
d778207b JB |
931 | } |
932 | ||
933 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
934 | { | |
935 | int err = __sta_info_destroy_part1(sta); | |
936 | ||
937 | if (err) | |
938 | return err; | |
939 | ||
940 | synchronize_net(); | |
941 | ||
942 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
943 | |
944 | return 0; | |
4d6141c3 JS |
945 | } |
946 | ||
34e89507 | 947 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 948 | { |
34e89507 JB |
949 | struct sta_info *sta; |
950 | int ret; | |
4d6141c3 | 951 | |
34e89507 | 952 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 953 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
954 | ret = __sta_info_destroy(sta); |
955 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
956 | |
957 | return ret; | |
958 | } | |
959 | ||
34e89507 JB |
960 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
961 | const u8 *addr) | |
e9f207f0 | 962 | { |
34e89507 JB |
963 | struct sta_info *sta; |
964 | int ret; | |
e9f207f0 | 965 | |
34e89507 | 966 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 967 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
968 | ret = __sta_info_destroy(sta); |
969 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 970 | |
34e89507 JB |
971 | return ret; |
972 | } | |
e9f207f0 | 973 | |
34e89507 JB |
974 | static void sta_info_cleanup(unsigned long data) |
975 | { | |
976 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
977 | struct sta_info *sta; | |
3393a608 | 978 | bool timer_needed = false; |
34e89507 JB |
979 | |
980 | rcu_read_lock(); | |
981 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
982 | if (sta_info_cleanup_expire_buffered(local, sta)) |
983 | timer_needed = true; | |
34e89507 | 984 | rcu_read_unlock(); |
e9f207f0 | 985 | |
34e89507 JB |
986 | if (local->quiescing) |
987 | return; | |
d0709a65 | 988 | |
3393a608 JO |
989 | if (!timer_needed) |
990 | return; | |
991 | ||
26d59535 JB |
992 | mod_timer(&local->sta_cleanup, |
993 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 994 | } |
e9f207f0 | 995 | |
7bedd0cf | 996 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 997 | { |
7bedd0cf JB |
998 | return jhash(key, ETH_ALEN, seed); |
999 | } | |
1000 | ||
1001 | int sta_info_init(struct ieee80211_local *local) | |
1002 | { | |
1003 | int err; | |
1004 | ||
1005 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
1006 | if (err) | |
1007 | return err; | |
1008 | ||
4d33960b | 1009 | spin_lock_init(&local->tim_lock); |
34e89507 | 1010 | mutex_init(&local->sta_mtx); |
f0706e82 | 1011 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1012 | |
b24b8a24 PE |
1013 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
1014 | (unsigned long)local); | |
7bedd0cf | 1015 | return 0; |
f0706e82 JB |
1016 | } |
1017 | ||
1018 | void sta_info_stop(struct ieee80211_local *local) | |
1019 | { | |
a56f992c | 1020 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 1021 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
1022 | } |
1023 | ||
051007d9 | 1024 | |
e716251d | 1025 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1026 | { |
b998e8bb | 1027 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1028 | struct sta_info *sta, *tmp; |
d778207b | 1029 | LIST_HEAD(free_list); |
44213b5e | 1030 | int ret = 0; |
f0706e82 | 1031 | |
d0709a65 | 1032 | might_sleep(); |
be8755e1 | 1033 | |
e716251d JB |
1034 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1035 | WARN_ON(vlans && !sdata->bss); | |
1036 | ||
34e89507 | 1037 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1038 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1039 | if (sdata == sta->sdata || |
1040 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1041 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1042 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1043 | ret++; |
1044 | } | |
be8755e1 | 1045 | } |
d778207b JB |
1046 | |
1047 | if (!list_empty(&free_list)) { | |
1048 | synchronize_net(); | |
1049 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1050 | __sta_info_destroy_part2(sta); | |
1051 | } | |
34e89507 | 1052 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1053 | |
051007d9 JB |
1054 | return ret; |
1055 | } | |
1056 | ||
24723d1b JB |
1057 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1058 | unsigned long exp_time) | |
1059 | { | |
1060 | struct ieee80211_local *local = sdata->local; | |
1061 | struct sta_info *sta, *tmp; | |
24723d1b | 1062 | |
34e89507 | 1063 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1064 | |
1065 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
ec2b774e ML |
1066 | if (sdata != sta->sdata) |
1067 | continue; | |
1068 | ||
e5a9f8d0 | 1069 | if (time_after(jiffies, sta->rx_stats.last_rx + exp_time)) { |
eea57d42 MSS |
1070 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1071 | sta->sta.addr); | |
3f52b7e3 MP |
1072 | |
1073 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1074 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1075 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1076 | ||
34e89507 | 1077 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1078 | } |
e46a2cf9 MSS |
1079 | } |
1080 | ||
34e89507 | 1081 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1082 | } |
17741cdc | 1083 | |
686b9cb9 | 1084 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1085 | const u8 *addr, |
1086 | const u8 *localaddr) | |
17741cdc | 1087 | { |
7bedd0cf JB |
1088 | struct ieee80211_local *local = hw_to_local(hw); |
1089 | struct sta_info *sta; | |
1090 | struct rhash_head *tmp; | |
1091 | const struct bucket_table *tbl; | |
1092 | ||
1093 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1094 | |
686b9cb9 BG |
1095 | /* |
1096 | * Just return a random station if localaddr is NULL | |
1097 | * ... first in list. | |
1098 | */ | |
7bedd0cf | 1099 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1100 | if (localaddr && |
b203ca39 | 1101 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1102 | continue; |
f7c65594 JB |
1103 | if (!sta->uploaded) |
1104 | return NULL; | |
abe60632 | 1105 | return &sta->sta; |
f7c65594 JB |
1106 | } |
1107 | ||
abe60632 | 1108 | return NULL; |
17741cdc | 1109 | } |
686b9cb9 | 1110 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1111 | |
1112 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1113 | const u8 *addr) | |
1114 | { | |
f7c65594 | 1115 | struct sta_info *sta; |
5ed176e1 JB |
1116 | |
1117 | if (!vif) | |
1118 | return NULL; | |
1119 | ||
f7c65594 JB |
1120 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1121 | if (!sta) | |
1122 | return NULL; | |
1123 | ||
1124 | if (!sta->uploaded) | |
1125 | return NULL; | |
5ed176e1 | 1126 | |
f7c65594 | 1127 | return &sta->sta; |
5ed176e1 | 1128 | } |
17741cdc | 1129 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1130 | |
e3685e03 JB |
1131 | /* powersave support code */ |
1132 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1133 | { |
608383bf | 1134 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1135 | struct ieee80211_local *local = sdata->local; |
1136 | struct sk_buff_head pending; | |
ba8c3d6f | 1137 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1138 | unsigned long flags; |
d012a605 MP |
1139 | struct ps_data *ps; |
1140 | ||
3918edb0 FF |
1141 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1142 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1143 | u.ap); | |
1144 | ||
1145 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1146 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1147 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1148 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1149 | else |
1150 | return; | |
50a9432d | 1151 | |
c2c98fde | 1152 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1153 | |
5a306f58 | 1154 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1155 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1156 | sta->txq_buffered_tids = 0; |
af818581 | 1157 | |
30686bf7 | 1158 | if (!ieee80211_hw_check(&local->hw, AP_LINK_PS)) |
d057e5a3 | 1159 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); |
af818581 | 1160 | |
ba8c3d6f FF |
1161 | if (sta->sta.txq[0]) { |
1162 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1163 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1164 | ||
1165 | if (!skb_queue_len(&txqi->queue)) | |
1166 | continue; | |
1167 | ||
1168 | drv_wake_tx_queue(local, txqi); | |
1169 | } | |
1170 | } | |
1171 | ||
948d887d | 1172 | skb_queue_head_init(&pending); |
af818581 | 1173 | |
1d147bfa EG |
1174 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1175 | spin_lock(&sta->ps_lock); | |
af818581 | 1176 | /* Send all buffered frames to the station */ |
948d887d JB |
1177 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1178 | int count = skb_queue_len(&pending), tmp; | |
1179 | ||
987c285c | 1180 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1181 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1182 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1183 | tmp = skb_queue_len(&pending); |
1184 | filtered += tmp - count; | |
1185 | count = tmp; | |
1186 | ||
987c285c | 1187 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1188 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1189 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1190 | tmp = skb_queue_len(&pending); |
1191 | buffered += tmp - count; | |
1192 | } | |
1193 | ||
e3685e03 | 1194 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1195 | |
1196 | /* now we're no longer in the deliver code */ | |
1197 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1198 | ||
1199 | /* The station might have polled and then woken up before we responded, | |
1200 | * so clear these flags now to avoid them sticking around. | |
1201 | */ | |
1202 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1203 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1204 | spin_unlock(&sta->ps_lock); |
948d887d | 1205 | |
e3685e03 JB |
1206 | atomic_dec(&ps->num_sta_ps); |
1207 | ||
687da132 | 1208 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1209 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1210 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1211 | sdata->smps_mode) && |
1212 | sta->known_smps_mode != sdata->bss->req_smps && | |
1213 | sta_info_tx_streams(sta) != 1) { | |
1214 | ht_dbg(sdata, | |
1215 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1216 | sta->sta.addr); | |
1217 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1218 | sta->sta.addr, | |
1219 | sdata->vif.bss_conf.bssid); | |
1220 | } | |
1221 | ||
af818581 JB |
1222 | local->total_ps_buffered -= buffered; |
1223 | ||
c868cb35 JB |
1224 | sta_info_recalc_tim(sta); |
1225 | ||
bdcbd8e0 JB |
1226 | ps_dbg(sdata, |
1227 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1228 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
17c18bf8 JB |
1229 | |
1230 | ieee80211_check_fast_xmit(sta); | |
af818581 JB |
1231 | } |
1232 | ||
ce662b44 JB |
1233 | static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, |
1234 | struct sta_info *sta, int tid, | |
b77cf4f8 JB |
1235 | enum ieee80211_frame_release_type reason, |
1236 | bool call_driver) | |
af818581 | 1237 | { |
af818581 | 1238 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1239 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1240 | struct sk_buff *skb; |
ce662b44 JB |
1241 | int size = sizeof(*nullfunc); |
1242 | __le16 fc; | |
a74a8c84 | 1243 | bool qos = sta->sta.wme; |
ce662b44 | 1244 | struct ieee80211_tx_info *info; |
55de908a | 1245 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1246 | |
ce662b44 JB |
1247 | if (qos) { |
1248 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1249 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1250 | IEEE80211_FCTL_FROMDS); | |
1251 | } else { | |
1252 | size -= 2; | |
1253 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1254 | IEEE80211_STYPE_NULLFUNC | | |
1255 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1256 | } |
af818581 | 1257 | |
ce662b44 JB |
1258 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1259 | if (!skb) | |
1260 | return; | |
1261 | ||
1262 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1263 | ||
1264 | nullfunc = (void *) skb_put(skb, size); | |
1265 | nullfunc->frame_control = fc; | |
1266 | nullfunc->duration_id = 0; | |
1267 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1268 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1269 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1270 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1271 | |
59b66255 JB |
1272 | skb->priority = tid; |
1273 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1274 | if (qos) { |
ce662b44 JB |
1275 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1276 | ||
40b96408 | 1277 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
ce662b44 JB |
1278 | nullfunc->qos_ctrl |= |
1279 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
1280 | } | |
1281 | ||
1282 | info = IEEE80211_SKB_CB(skb); | |
1283 | ||
1284 | /* | |
1285 | * Tell TX path to send this frame even though the | |
1286 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1287 | * exchange. Also set EOSP to indicate this packet |
1288 | * ends the poll/service period. | |
ce662b44 | 1289 | */ |
02f2f1a9 | 1290 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1291 | IEEE80211_TX_STATUS_EOSP | |
1292 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1293 | |
6b127c71 SM |
1294 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1295 | ||
b77cf4f8 JB |
1296 | if (call_driver) |
1297 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1298 | reason, false); | |
40b96408 | 1299 | |
89afe614 JB |
1300 | skb->dev = sdata->dev; |
1301 | ||
55de908a JB |
1302 | rcu_read_lock(); |
1303 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1304 | if (WARN_ON(!chanctx_conf)) { | |
1305 | rcu_read_unlock(); | |
1306 | kfree_skb(skb); | |
1307 | return; | |
1308 | } | |
1309 | ||
73c4e195 | 1310 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1311 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1312 | rcu_read_unlock(); |
ce662b44 JB |
1313 | } |
1314 | ||
0a1cb809 JB |
1315 | static int find_highest_prio_tid(unsigned long tids) |
1316 | { | |
1317 | /* lower 3 TIDs aren't ordered perfectly */ | |
1318 | if (tids & 0xF8) | |
1319 | return fls(tids) - 1; | |
1320 | /* TID 0 is BE just like TID 3 */ | |
1321 | if (tids & BIT(0)) | |
1322 | return 0; | |
1323 | return fls(tids) - 1; | |
1324 | } | |
1325 | ||
47086fc5 JB |
1326 | static void |
1327 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1328 | int n_frames, u8 ignored_acs, | |
1329 | enum ieee80211_frame_release_type reason) | |
af818581 JB |
1330 | { |
1331 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1332 | struct ieee80211_local *local = sdata->local; | |
948d887d JB |
1333 | bool more_data = false; |
1334 | int ac; | |
4049e09a | 1335 | unsigned long driver_release_tids = 0; |
47086fc5 | 1336 | struct sk_buff_head frames; |
af818581 | 1337 | |
deeaee19 | 1338 | /* Service or PS-Poll period starts */ |
c2c98fde | 1339 | set_sta_flag(sta, WLAN_STA_SP); |
deeaee19 | 1340 | |
47086fc5 | 1341 | __skb_queue_head_init(&frames); |
948d887d | 1342 | |
f9f760b4 | 1343 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1344 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1345 | unsigned long tids; |
1346 | ||
47086fc5 | 1347 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1348 | continue; |
1349 | ||
4049e09a JB |
1350 | tids = ieee80211_tids_for_ac(ac); |
1351 | ||
f9f760b4 JB |
1352 | /* if we already have frames from software, then we can't also |
1353 | * release from hardware queues | |
1354 | */ | |
ba8c3d6f | 1355 | if (skb_queue_empty(&frames)) { |
f9f760b4 | 1356 | driver_release_tids |= sta->driver_buffered_tids & tids; |
ba8c3d6f FF |
1357 | driver_release_tids |= sta->txq_buffered_tids & tids; |
1358 | } | |
948d887d | 1359 | |
f9f760b4 JB |
1360 | if (driver_release_tids) { |
1361 | /* If the driver has data on more than one TID then | |
4049e09a | 1362 | * certainly there's more data if we release just a |
f9f760b4 JB |
1363 | * single frame now (from a single TID). This will |
1364 | * only happen for PS-Poll. | |
4049e09a | 1365 | */ |
47086fc5 JB |
1366 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
1367 | hweight16(driver_release_tids) > 1) { | |
4049e09a JB |
1368 | more_data = true; |
1369 | driver_release_tids = | |
0a1cb809 JB |
1370 | BIT(find_highest_prio_tid( |
1371 | driver_release_tids)); | |
4049e09a JB |
1372 | break; |
1373 | } | |
f9f760b4 JB |
1374 | } else { |
1375 | struct sk_buff *skb; | |
1376 | ||
1377 | while (n_frames > 0) { | |
1378 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1379 | if (!skb) { | |
1380 | skb = skb_dequeue( | |
1381 | &sta->ps_tx_buf[ac]); | |
1382 | if (skb) | |
1383 | local->total_ps_buffered--; | |
1384 | } | |
1385 | if (!skb) | |
1386 | break; | |
1387 | n_frames--; | |
1388 | __skb_queue_tail(&frames, skb); | |
1389 | } | |
4049e09a | 1390 | } |
948d887d | 1391 | |
f9f760b4 JB |
1392 | /* If we have more frames buffered on this AC, then set the |
1393 | * more-data bit and abort the loop since we can't send more | |
1394 | * data from other ACs before the buffered frames from this. | |
1395 | */ | |
948d887d JB |
1396 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
1397 | !skb_queue_empty(&sta->ps_tx_buf[ac])) { | |
1398 | more_data = true; | |
1399 | break; | |
1400 | } | |
af818581 | 1401 | } |
af818581 | 1402 | |
f9f760b4 | 1403 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1404 | int tid; |
af818581 JB |
1405 | |
1406 | /* | |
ce662b44 JB |
1407 | * For PS-Poll, this can only happen due to a race condition |
1408 | * when we set the TIM bit and the station notices it, but | |
1409 | * before it can poll for the frame we expire it. | |
1410 | * | |
1411 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1412 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1413 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1414 | * more than the value specified in the Max SP Length field | |
1415 | * in the QoS Capability element from delivery-enabled ACs, | |
1416 | * that are destined for the non-AP STA. | |
1417 | * | |
1418 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1419 | */ |
af818581 | 1420 | |
ce662b44 JB |
1421 | /* This will evaluate to 1, 3, 5 or 7. */ |
1422 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1423 | |
b77cf4f8 | 1424 | ieee80211_send_null_response(sdata, sta, tid, reason, true); |
f9f760b4 | 1425 | } else if (!driver_release_tids) { |
47086fc5 JB |
1426 | struct sk_buff_head pending; |
1427 | struct sk_buff *skb; | |
40b96408 JB |
1428 | int num = 0; |
1429 | u16 tids = 0; | |
b77cf4f8 | 1430 | bool need_null = false; |
af818581 | 1431 | |
47086fc5 | 1432 | skb_queue_head_init(&pending); |
af818581 | 1433 | |
47086fc5 JB |
1434 | while ((skb = __skb_dequeue(&frames))) { |
1435 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1436 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1437 | u8 *qoshdr = NULL; |
1438 | ||
1439 | num++; | |
af818581 | 1440 | |
47086fc5 JB |
1441 | /* |
1442 | * Tell TX path to send this frame even though the | |
1443 | * STA may still remain is PS mode after this frame | |
1444 | * exchange. | |
1445 | */ | |
6b127c71 SM |
1446 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1447 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1448 | |
1449 | /* | |
1450 | * Use MoreData flag to indicate whether there are | |
1451 | * more buffered frames for this STA | |
1452 | */ | |
24b9c373 | 1453 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1454 | hdr->frame_control |= |
1455 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1456 | else |
1457 | hdr->frame_control &= | |
1458 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1459 | |
40b96408 JB |
1460 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1461 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1462 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1463 | ||
b77cf4f8 | 1464 | tids |= BIT(skb->priority); |
52a3f20c | 1465 | |
b77cf4f8 JB |
1466 | __skb_queue_tail(&pending, skb); |
1467 | ||
1468 | /* end service period after last frame or add one */ | |
1469 | if (!skb_queue_empty(&frames)) | |
1470 | continue; | |
1471 | ||
1472 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1473 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1474 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1475 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1476 | break; |
52a3f20c | 1477 | } |
deeaee19 | 1478 | |
b77cf4f8 JB |
1479 | /* For uAPSD, things are a bit more complicated. If the |
1480 | * last frame has a QoS header (i.e. is a QoS-data or | |
1481 | * QoS-nulldata frame) then just set the EOSP bit there | |
1482 | * and be done. | |
1483 | * If the frame doesn't have a QoS header (which means | |
1484 | * it should be a bufferable MMPDU) then we can't set | |
1485 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1486 | * frame to the list to send it after the MMPDU. | |
1487 | * | |
1488 | * Note that this code is only in the mac80211-release | |
1489 | * code path, we assume that the driver will not buffer | |
1490 | * anything but QoS-data frames, or if it does, will | |
1491 | * create the QoS-nulldata frame by itself if needed. | |
1492 | * | |
1493 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1494 | */ | |
1495 | if (qoshdr) { | |
1496 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1497 | |
b77cf4f8 JB |
1498 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1499 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1500 | } else { | |
1501 | /* The standard isn't completely clear on this | |
1502 | * as it says the more-data bit should be set | |
1503 | * if there are more BUs. The QoS-Null frame | |
1504 | * we're about to send isn't buffered yet, we | |
1505 | * only create it below, but let's pretend it | |
1506 | * was buffered just in case some clients only | |
1507 | * expect more-data=0 when eosp=1. | |
1508 | */ | |
1509 | hdr->frame_control |= | |
1510 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1511 | need_null = true; | |
1512 | num++; | |
1513 | } | |
1514 | break; | |
47086fc5 | 1515 | } |
af818581 | 1516 | |
40b96408 JB |
1517 | drv_allow_buffered_frames(local, sta, tids, num, |
1518 | reason, more_data); | |
1519 | ||
47086fc5 | 1520 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1521 | |
b77cf4f8 JB |
1522 | if (need_null) |
1523 | ieee80211_send_null_response( | |
1524 | sdata, sta, find_highest_prio_tid(tids), | |
1525 | reason, false); | |
1526 | ||
c868cb35 | 1527 | sta_info_recalc_tim(sta); |
af818581 | 1528 | } else { |
ba8c3d6f FF |
1529 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1530 | int tid; | |
1531 | ||
af818581 | 1532 | /* |
4049e09a JB |
1533 | * We need to release a frame that is buffered somewhere in the |
1534 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1535 | * Note that the driver also has to check the number of frames |
1536 | * on the TIDs we're releasing from - if there are more than | |
1537 | * n_frames it has to set the more-data bit (if we didn't ask | |
1538 | * it to set it anyway due to other buffered frames); if there | |
1539 | * are fewer than n_frames it has to make sure to adjust that | |
1540 | * to allow the service period to end properly. | |
4049e09a JB |
1541 | */ |
1542 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1543 | n_frames, reason, more_data); |
4049e09a JB |
1544 | |
1545 | /* | |
1546 | * Note that we don't recalculate the TIM bit here as it would | |
1547 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1548 | * that the TID(s) became empty before returning here from the |
4049e09a | 1549 | * release function. |
f9f760b4 | 1550 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1551 | * became empty or we find that a txq became empty, we'll do the |
1552 | * TIM recalculation. | |
af818581 | 1553 | */ |
ba8c3d6f FF |
1554 | |
1555 | if (!sta->sta.txq[0]) | |
1556 | return; | |
1557 | ||
1558 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1559 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1560 | ||
1561 | if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue)) | |
1562 | continue; | |
1563 | ||
1564 | sta_info_recalc_tim(sta); | |
1565 | break; | |
1566 | } | |
af818581 JB |
1567 | } |
1568 | } | |
1569 | ||
47086fc5 JB |
1570 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1571 | { | |
1572 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1573 | ||
1574 | /* | |
1575 | * If all ACs are delivery-enabled then we should reply | |
1576 | * from any of them, if only some are enabled we reply | |
1577 | * only from the non-enabled ones. | |
1578 | */ | |
1579 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1580 | ignore_for_response = 0; | |
1581 | ||
1582 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1583 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1584 | } | |
1585 | ||
1586 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1587 | { | |
1588 | int n_frames = sta->sta.max_sp; | |
1589 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1590 | ||
1591 | /* | |
1592 | * If we ever grow support for TSPEC this might happen if | |
1593 | * the TSPEC update from hostapd comes in between a trigger | |
1594 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1595 | * actually getting called. | |
1596 | */ | |
1597 | if (!delivery_enabled) | |
1598 | return; | |
1599 | ||
47086fc5 JB |
1600 | switch (sta->sta.max_sp) { |
1601 | case 1: | |
1602 | n_frames = 2; | |
1603 | break; | |
1604 | case 2: | |
1605 | n_frames = 4; | |
1606 | break; | |
1607 | case 3: | |
1608 | n_frames = 6; | |
1609 | break; | |
1610 | case 0: | |
1611 | /* XXX: what is a good value? */ | |
13a8098a | 1612 | n_frames = 128; |
47086fc5 JB |
1613 | break; |
1614 | } | |
1615 | ||
1616 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1617 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1618 | } | |
1619 | ||
af818581 JB |
1620 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1621 | struct ieee80211_sta *pubsta, bool block) | |
1622 | { | |
1623 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1624 | ||
b5878a2d JB |
1625 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1626 | ||
5ac2e350 | 1627 | if (block) { |
c2c98fde | 1628 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
17c18bf8 | 1629 | ieee80211_clear_fast_xmit(sta); |
5ac2e350 JB |
1630 | return; |
1631 | } | |
1632 | ||
1633 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1634 | return; | |
1635 | ||
1636 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1637 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1638 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1639 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1640 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1641 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1642 | /* must be asleep in this case */ | |
1643 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1644 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1645 | } else { | |
1646 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
17c18bf8 | 1647 | ieee80211_check_fast_xmit(sta); |
5ac2e350 | 1648 | } |
af818581 JB |
1649 | } |
1650 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1651 | |
e943789e | 1652 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1653 | { |
1654 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1655 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1656 | |
1657 | trace_api_eosp(local, pubsta); | |
1658 | ||
e943789e | 1659 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1660 | } |
e943789e | 1661 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1662 | |
042ec453 JB |
1663 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1664 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1665 | { |
1666 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1667 | ||
5a306f58 | 1668 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1669 | return; |
1670 | ||
1b000789 JB |
1671 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1672 | ||
948d887d JB |
1673 | if (buffered) |
1674 | set_bit(tid, &sta->driver_buffered_tids); | |
1675 | else | |
1676 | clear_bit(tid, &sta->driver_buffered_tids); | |
1677 | ||
c868cb35 | 1678 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1679 | } |
042ec453 | 1680 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1681 | |
83d5cc01 JB |
1682 | int sta_info_move_state(struct sta_info *sta, |
1683 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1684 | { |
8bf11d8d | 1685 | might_sleep(); |
d9a7ddb0 JB |
1686 | |
1687 | if (sta->sta_state == new_state) | |
1688 | return 0; | |
1689 | ||
f09603a2 JB |
1690 | /* check allowed transitions first */ |
1691 | ||
1692 | switch (new_state) { | |
1693 | case IEEE80211_STA_NONE: | |
1694 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1695 | return -EINVAL; | |
1696 | break; | |
1697 | case IEEE80211_STA_AUTH: | |
1698 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1699 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1700 | return -EINVAL; | |
1701 | break; | |
1702 | case IEEE80211_STA_ASSOC: | |
1703 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1704 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1705 | return -EINVAL; | |
1706 | break; | |
1707 | case IEEE80211_STA_AUTHORIZED: | |
1708 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1709 | return -EINVAL; | |
1710 | break; | |
1711 | default: | |
1712 | WARN(1, "invalid state %d", new_state); | |
1713 | return -EINVAL; | |
1714 | } | |
1715 | ||
bdcbd8e0 JB |
1716 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1717 | sta->sta.addr, new_state); | |
f09603a2 JB |
1718 | |
1719 | /* | |
1720 | * notify the driver before the actual changes so it can | |
1721 | * fail the transition | |
1722 | */ | |
1723 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1724 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1725 | sta->sta_state, new_state); | |
1726 | if (err) | |
1727 | return err; | |
1728 | } | |
1729 | ||
1730 | /* reflect the change in all state variables */ | |
1731 | ||
d9a7ddb0 JB |
1732 | switch (new_state) { |
1733 | case IEEE80211_STA_NONE: | |
1734 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1735 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1736 | break; |
1737 | case IEEE80211_STA_AUTH: | |
1738 | if (sta->sta_state == IEEE80211_STA_NONE) | |
1739 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1740 | else if (sta->sta_state == IEEE80211_STA_ASSOC) | |
1741 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
d9a7ddb0 JB |
1742 | break; |
1743 | case IEEE80211_STA_ASSOC: | |
29623892 | 1744 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1745 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
29623892 | 1746 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1747 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1748 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1749 | !sta->sdata->u.vlan.sta)) | |
1750 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1751 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1752 | ieee80211_clear_fast_xmit(sta); |
f09603a2 | 1753 | } |
d9a7ddb0 JB |
1754 | break; |
1755 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1756 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1757 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1758 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1759 | !sta->sdata->u.vlan.sta)) | |
1760 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1761 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
17c18bf8 | 1762 | ieee80211_check_fast_xmit(sta); |
f09603a2 | 1763 | } |
d9a7ddb0 JB |
1764 | break; |
1765 | default: | |
f09603a2 | 1766 | break; |
d9a7ddb0 JB |
1767 | } |
1768 | ||
d9a7ddb0 JB |
1769 | sta->sta_state = new_state; |
1770 | ||
1771 | return 0; | |
1772 | } | |
687da132 EG |
1773 | |
1774 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1775 | { | |
1776 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1777 | u8 rx_streams; | |
1778 | ||
1779 | if (!sta->sta.ht_cap.ht_supported) | |
1780 | return 1; | |
1781 | ||
1782 | if (sta->sta.vht_cap.vht_supported) { | |
1783 | int i; | |
1784 | u16 tx_mcs_map = | |
1785 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1786 | ||
1787 | for (i = 7; i >= 0; i--) | |
1788 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1789 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1790 | return i + 1; | |
1791 | } | |
1792 | ||
1793 | if (ht_cap->mcs.rx_mask[3]) | |
1794 | rx_streams = 4; | |
1795 | else if (ht_cap->mcs.rx_mask[2]) | |
1796 | rx_streams = 3; | |
1797 | else if (ht_cap->mcs.rx_mask[1]) | |
1798 | rx_streams = 2; | |
1799 | else | |
1800 | rx_streams = 1; | |
1801 | ||
1802 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1803 | return rx_streams; | |
1804 | ||
1805 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1806 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1807 | } | |
b7ffbd7e | 1808 | |
fbd6ff5c JB |
1809 | static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) |
1810 | { | |
1811 | rinfo->flags = 0; | |
1812 | ||
e5a9f8d0 | 1813 | if (sta->rx_stats.last_rate_flag & RX_FLAG_HT) { |
fbd6ff5c | 1814 | rinfo->flags |= RATE_INFO_FLAGS_MCS; |
e5a9f8d0 JB |
1815 | rinfo->mcs = sta->rx_stats.last_rate_idx; |
1816 | } else if (sta->rx_stats.last_rate_flag & RX_FLAG_VHT) { | |
fbd6ff5c | 1817 | rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; |
e5a9f8d0 JB |
1818 | rinfo->nss = sta->rx_stats.last_rate_vht_nss; |
1819 | rinfo->mcs = sta->rx_stats.last_rate_idx; | |
fbd6ff5c JB |
1820 | } else { |
1821 | struct ieee80211_supported_band *sband; | |
1822 | int shift = ieee80211_vif_get_shift(&sta->sdata->vif); | |
1823 | u16 brate; | |
1824 | ||
1825 | sband = sta->local->hw.wiphy->bands[ | |
1826 | ieee80211_get_sdata_band(sta->sdata)]; | |
e5a9f8d0 | 1827 | brate = sband->bitrates[sta->rx_stats.last_rate_idx].bitrate; |
fbd6ff5c JB |
1828 | rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); |
1829 | } | |
1830 | ||
e5a9f8d0 | 1831 | if (sta->rx_stats.last_rate_flag & RX_FLAG_SHORT_GI) |
fbd6ff5c JB |
1832 | rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; |
1833 | ||
e5a9f8d0 | 1834 | if (sta->rx_stats.last_rate_flag & RX_FLAG_5MHZ) |
fbd6ff5c | 1835 | rinfo->bw = RATE_INFO_BW_5; |
e5a9f8d0 | 1836 | else if (sta->rx_stats.last_rate_flag & RX_FLAG_10MHZ) |
fbd6ff5c | 1837 | rinfo->bw = RATE_INFO_BW_10; |
e5a9f8d0 | 1838 | else if (sta->rx_stats.last_rate_flag & RX_FLAG_40MHZ) |
fbd6ff5c | 1839 | rinfo->bw = RATE_INFO_BW_40; |
e5a9f8d0 | 1840 | else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_80MHZ) |
fbd6ff5c | 1841 | rinfo->bw = RATE_INFO_BW_80; |
e5a9f8d0 | 1842 | else if (sta->rx_stats.last_rate_vht_flag & RX_VHT_FLAG_160MHZ) |
fbd6ff5c JB |
1843 | rinfo->bw = RATE_INFO_BW_160; |
1844 | else | |
1845 | rinfo->bw = RATE_INFO_BW_20; | |
1846 | } | |
1847 | ||
b7ffbd7e JB |
1848 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
1849 | { | |
1850 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1851 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 1852 | struct rate_control_ref *ref = NULL; |
b7ffbd7e JB |
1853 | u32 thr = 0; |
1854 | int i, ac; | |
1855 | ||
9a244409 JL |
1856 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
1857 | ref = local->rate_ctrl; | |
1858 | ||
b7ffbd7e JB |
1859 | sinfo->generation = sdata->local->sta_generation; |
1860 | ||
225b8189 JB |
1861 | /* do before driver, so beacon filtering drivers have a |
1862 | * chance to e.g. just add the number of filtered beacons | |
1863 | * (or just modify the value entirely, of course) | |
1864 | */ | |
1865 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1866 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
1867 | ||
2b9a7e1b JB |
1868 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
1869 | ||
319090bf JB |
1870 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
1871 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
1872 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
1873 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
976bd9ef JB |
1874 | BIT(NL80211_STA_INFO_RX_DROP_MISC); |
1875 | ||
1876 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
1877 | sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count; | |
1878 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS); | |
1879 | } | |
b7ffbd7e | 1880 | |
84b00607 | 1881 | sinfo->connected_time = ktime_get_seconds() - sta->last_connected; |
e5a9f8d0 JB |
1882 | sinfo->inactive_time = |
1883 | jiffies_to_msecs(jiffies - sta->rx_stats.last_rx); | |
2b9a7e1b | 1884 | |
319090bf JB |
1885 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
1886 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
1887 | sinfo->tx_bytes = 0; |
1888 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 1889 | sinfo->tx_bytes += sta->tx_stats.bytes[ac]; |
319090bf | 1890 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
1891 | } |
1892 | ||
319090bf | 1893 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
1894 | sinfo->tx_packets = 0; |
1895 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
e5a9f8d0 | 1896 | sinfo->tx_packets += sta->tx_stats.packets[ac]; |
319090bf | 1897 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
1898 | } |
1899 | ||
319090bf JB |
1900 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
1901 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
e5a9f8d0 | 1902 | sinfo->rx_bytes = sta->rx_stats.bytes; |
319090bf | 1903 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
1904 | } |
1905 | ||
319090bf | 1906 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
e5a9f8d0 | 1907 | sinfo->rx_packets = sta->rx_stats.packets; |
319090bf | 1908 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
1909 | } |
1910 | ||
319090bf | 1911 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
e5a9f8d0 | 1912 | sinfo->tx_retries = sta->status_stats.retry_count; |
319090bf | 1913 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
1914 | } |
1915 | ||
319090bf | 1916 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
e5a9f8d0 | 1917 | sinfo->tx_failed = sta->status_stats.retry_failed; |
319090bf | 1918 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 1919 | } |
2b9a7e1b | 1920 | |
e5a9f8d0 | 1921 | sinfo->rx_dropped_misc = sta->rx_stats.dropped; |
b7ffbd7e | 1922 | |
225b8189 JB |
1923 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1924 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
1925 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
1926 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
1927 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
1928 | } | |
1929 | ||
30686bf7 JB |
1930 | if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) || |
1931 | ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) { | |
319090bf | 1932 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
e5a9f8d0 | 1933 | sinfo->signal = (s8)sta->rx_stats.last_signal; |
319090bf | 1934 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
1935 | } |
1936 | ||
319090bf | 1937 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { |
40d9a38a | 1938 | sinfo->signal_avg = |
e5a9f8d0 | 1939 | -ewma_signal_read(&sta->rx_stats.avg_signal); |
319090bf | 1940 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 1941 | } |
b7ffbd7e | 1942 | } |
2b9a7e1b | 1943 | |
e5a9f8d0 | 1944 | if (sta->rx_stats.chains && |
319090bf JB |
1945 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
1946 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
1947 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | | |
1948 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
b7ffbd7e | 1949 | |
e5a9f8d0 | 1950 | sinfo->chains = sta->rx_stats.chains; |
b7ffbd7e | 1951 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { |
e5a9f8d0 JB |
1952 | sinfo->chain_signal[i] = |
1953 | sta->rx_stats.chain_signal_last[i]; | |
b7ffbd7e | 1954 | sinfo->chain_signal_avg[i] = |
e5a9f8d0 | 1955 | -ewma_signal_read(&sta->rx_stats.chain_signal_avg[i]); |
b7ffbd7e JB |
1956 | } |
1957 | } | |
1958 | ||
319090bf | 1959 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
e5a9f8d0 JB |
1960 | sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, |
1961 | &sinfo->txrate); | |
319090bf | 1962 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
1963 | } |
1964 | ||
319090bf | 1965 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 1966 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 1967 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 1968 | } |
b7ffbd7e | 1969 | |
79c892b8 JB |
1970 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
1971 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
1972 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
1973 | ||
1974 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
1975 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
e5a9f8d0 | 1976 | tidstats->rx_msdu = sta->rx_stats.msdu[i]; |
79c892b8 JB |
1977 | } |
1978 | ||
1979 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
1980 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
e5a9f8d0 | 1981 | tidstats->tx_msdu = sta->tx_stats.msdu[i]; |
79c892b8 JB |
1982 | } |
1983 | ||
1984 | if (!(tidstats->filled & | |
1985 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
30686bf7 | 1986 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
1987 | tidstats->filled |= |
1988 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
e5a9f8d0 JB |
1989 | tidstats->tx_msdu_retries = |
1990 | sta->status_stats.msdu_retries[i]; | |
79c892b8 JB |
1991 | } |
1992 | ||
1993 | if (!(tidstats->filled & | |
1994 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
30686bf7 | 1995 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
79c892b8 JB |
1996 | tidstats->filled |= |
1997 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
e5a9f8d0 JB |
1998 | tidstats->tx_msdu_failed = |
1999 | sta->status_stats.msdu_failed[i]; | |
79c892b8 JB |
2000 | } |
2001 | } | |
2002 | ||
b7ffbd7e JB |
2003 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2004 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
2005 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
2006 | BIT(NL80211_STA_INFO_PLID) | | |
2007 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
2008 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
2009 | BIT(NL80211_STA_INFO_PEER_PM) | | |
2010 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e | 2011 | |
433f5bc1 JB |
2012 | sinfo->llid = sta->mesh->llid; |
2013 | sinfo->plid = sta->mesh->plid; | |
2014 | sinfo->plink_state = sta->mesh->plink_state; | |
b7ffbd7e | 2015 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { |
319090bf | 2016 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
433f5bc1 | 2017 | sinfo->t_offset = sta->mesh->t_offset; |
b7ffbd7e | 2018 | } |
433f5bc1 JB |
2019 | sinfo->local_pm = sta->mesh->local_pm; |
2020 | sinfo->peer_pm = sta->mesh->peer_pm; | |
2021 | sinfo->nonpeer_pm = sta->mesh->nonpeer_pm; | |
b7ffbd7e JB |
2022 | #endif |
2023 | } | |
2024 | ||
2025 | sinfo->bss_param.flags = 0; | |
2026 | if (sdata->vif.bss_conf.use_cts_prot) | |
2027 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
2028 | if (sdata->vif.bss_conf.use_short_preamble) | |
2029 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
2030 | if (sdata->vif.bss_conf.use_short_slot) | |
2031 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 2032 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
2033 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
2034 | ||
2035 | sinfo->sta_flags.set = 0; | |
2036 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
2037 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
2038 | BIT(NL80211_STA_FLAG_WME) | | |
2039 | BIT(NL80211_STA_FLAG_MFP) | | |
2040 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
2041 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
2042 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2043 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
2044 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
2045 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
2046 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 2047 | if (sta->sta.wme) |
b7ffbd7e JB |
2048 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
2049 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
2050 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
2051 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
2052 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
2053 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
2054 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
2055 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
2056 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
2057 | ||
2058 | /* check if the driver has a SW RC implementation */ | |
2059 | if (ref && ref->ops->get_expected_throughput) | |
2060 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2061 | else | |
2062 | thr = drv_get_expected_throughput(local, &sta->sta); | |
2063 | ||
2064 | if (thr != 0) { | |
319090bf | 2065 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
2066 | sinfo->expected_throughput = thr; |
2067 | } | |
2068 | } |