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 */ | |
69 | .head_offset = offsetof(struct sta_info, hash_node), | |
70 | .key_offset = offsetof(struct sta_info, sta.addr), | |
71 | .key_len = ETH_ALEN, | |
72 | .hashfn = sta_addr_hash, | |
73 | }; | |
74 | ||
4d33960b | 75 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
76 | static int sta_info_hash_del(struct ieee80211_local *local, |
77 | struct sta_info *sta) | |
f0706e82 | 78 | { |
7bedd0cf JB |
79 | return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node, |
80 | sta_rht_params); | |
f0706e82 JB |
81 | } |
82 | ||
5108ca82 | 83 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 84 | { |
b22cfcfc EP |
85 | int ac, i; |
86 | struct tid_ampdu_tx *tid_tx; | |
87 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
88 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 89 | struct ps_data *ps; |
b22cfcfc | 90 | |
e3685e03 | 91 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
92 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
93 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
94 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
95 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
96 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
97 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
98 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
99 | else |
100 | return; | |
b22cfcfc EP |
101 | |
102 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 103 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 104 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 105 | |
d012a605 | 106 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
107 | } |
108 | ||
ba8c3d6f FF |
109 | if (sta->sta.txq[0]) { |
110 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
111 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
112 | int n = skb_queue_len(&txqi->queue); | |
113 | ||
114 | ieee80211_purge_tx_queue(&local->hw, &txqi->queue); | |
115 | atomic_sub(n, &sdata->txqs_len[txqi->txq.ac]); | |
116 | } | |
117 | } | |
118 | ||
b22cfcfc EP |
119 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
120 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
121 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
122 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
123 | } |
124 | ||
45b5028e TP |
125 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
126 | mesh_sta_cleanup(sta); | |
b22cfcfc | 127 | |
5ac2e350 | 128 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
129 | |
130 | /* | |
131 | * Destroy aggregation state here. It would be nice to wait for the | |
132 | * driver to finish aggregation stop and then clean up, but for now | |
133 | * drivers have to handle aggregation stop being requested, followed | |
134 | * directly by station destruction. | |
135 | */ | |
5a306f58 | 136 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 137 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
138 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
139 | if (!tid_tx) | |
140 | continue; | |
1f98ab7f | 141 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
142 | kfree(tid_tx); |
143 | } | |
5108ca82 | 144 | } |
b22cfcfc | 145 | |
5108ca82 JB |
146 | static void cleanup_single_sta(struct sta_info *sta) |
147 | { | |
148 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
149 | struct ieee80211_local *local = sdata->local; | |
150 | ||
151 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
152 | sta_info_free(local, sta); |
153 | } | |
154 | ||
d0709a65 | 155 | /* protected by RCU */ |
abe60632 JB |
156 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
157 | const u8 *addr) | |
f0706e82 | 158 | { |
abe60632 | 159 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 160 | |
7bedd0cf | 161 | return rhashtable_lookup_fast(&local->sta_hash, addr, sta_rht_params); |
43ba7e95 JB |
162 | } |
163 | ||
0e5ded5a FF |
164 | /* |
165 | * Get sta info either from the specified interface | |
166 | * or from one of its vlans | |
167 | */ | |
168 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
169 | const u8 *addr) | |
170 | { | |
171 | struct ieee80211_local *local = sdata->local; | |
172 | struct sta_info *sta; | |
7bedd0cf JB |
173 | struct rhash_head *tmp; |
174 | const struct bucket_table *tbl; | |
0e5ded5a | 175 | |
7bedd0cf JB |
176 | rcu_read_lock(); |
177 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
178 | ||
179 | for_each_sta_info(local, tbl, addr, sta, tmp) { | |
180 | if (sta->sdata == sdata || | |
181 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
182 | rcu_read_unlock(); | |
183 | /* this is safe as the caller must already hold | |
184 | * another rcu read section or the mutex | |
185 | */ | |
186 | return sta; | |
187 | } | |
0e5ded5a | 188 | } |
7bedd0cf JB |
189 | rcu_read_unlock(); |
190 | return NULL; | |
0e5ded5a FF |
191 | } |
192 | ||
3b53fde8 JB |
193 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
194 | int idx) | |
ee385855 | 195 | { |
3b53fde8 | 196 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
197 | struct sta_info *sta; |
198 | int i = 0; | |
199 | ||
d0709a65 | 200 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 201 | if (sdata != sta->sdata) |
2a8ca29a | 202 | continue; |
ee385855 LCC |
203 | if (i < idx) { |
204 | ++i; | |
205 | continue; | |
ee385855 | 206 | } |
2a8ca29a | 207 | return sta; |
ee385855 | 208 | } |
ee385855 LCC |
209 | |
210 | return NULL; | |
211 | } | |
f0706e82 | 212 | |
93e5deb1 | 213 | /** |
d9a7ddb0 | 214 | * sta_info_free - free STA |
93e5deb1 | 215 | * |
6ef307bc | 216 | * @local: pointer to the global information |
93e5deb1 JB |
217 | * @sta: STA info to free |
218 | * | |
219 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
220 | * that may happen before sta_info_insert(). It may only be |
221 | * called when sta_info_insert() has not been attempted (and | |
222 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 223 | */ |
d9a7ddb0 | 224 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 225 | { |
889cbb91 | 226 | if (sta->rate_ctrl) |
af65cd96 | 227 | rate_control_free_sta(sta); |
93e5deb1 | 228 | |
bdcbd8e0 | 229 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 230 | |
ba8c3d6f FF |
231 | if (sta->sta.txq[0]) |
232 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 233 | kfree(rcu_dereference_raw(sta->sta.rates)); |
93e5deb1 JB |
234 | kfree(sta); |
235 | } | |
236 | ||
4d33960b | 237 | /* Caller must hold local->sta_mtx */ |
d0709a65 JB |
238 | static void sta_info_hash_add(struct ieee80211_local *local, |
239 | struct sta_info *sta) | |
f0706e82 | 240 | { |
7bedd0cf JB |
241 | rhashtable_insert_fast(&local->sta_hash, &sta->hash_node, |
242 | sta_rht_params); | |
f0706e82 | 243 | } |
f0706e82 | 244 | |
5ac2e350 | 245 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
246 | { |
247 | struct sta_info *sta; | |
248 | ||
5ac2e350 | 249 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
250 | |
251 | if (sta->dead) | |
252 | return; | |
253 | ||
5ac2e350 JB |
254 | local_bh_disable(); |
255 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 256 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 257 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 258 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 259 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 260 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 261 | local_bh_enable(); |
af818581 JB |
262 | } |
263 | ||
af65cd96 JB |
264 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
265 | struct sta_info *sta, gfp_t gfp) | |
266 | { | |
267 | if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) | |
268 | return 0; | |
269 | ||
889cbb91 | 270 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 JB |
271 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
272 | &sta->sta, gfp); | |
889cbb91 | 273 | if (!sta->rate_ctrl_priv) |
af65cd96 | 274 | return -ENOMEM; |
af65cd96 JB |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
73651ee6 | 279 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 280 | const u8 *addr, gfp_t gfp) |
f0706e82 | 281 | { |
d0709a65 | 282 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 283 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 284 | struct sta_info *sta; |
ebe27c91 | 285 | struct timespec uptime; |
16c5f15c | 286 | int i; |
f0706e82 | 287 | |
ba8c3d6f | 288 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 289 | if (!sta) |
73651ee6 | 290 | return NULL; |
f0706e82 | 291 | |
07346f81 | 292 | spin_lock_init(&sta->lock); |
1d147bfa | 293 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 294 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 295 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 296 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 | 297 | #ifdef CONFIG_MAC80211_MESH |
48bf6bed | 298 | spin_lock_init(&sta->plink_lock); |
87f59c70 TP |
299 | if (ieee80211_vif_is_mesh(&sdata->vif) && |
300 | !sdata->u.mesh.user_mpm) | |
301 | init_timer(&sta->plink_timer); | |
6c7c4cbf | 302 | sta->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
87f59c70 | 303 | #endif |
07346f81 | 304 | |
17741cdc | 305 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
d0709a65 JB |
306 | sta->local = local; |
307 | sta->sdata = sdata; | |
8bc8aecd | 308 | sta->last_rx = jiffies; |
f0706e82 | 309 | |
71ec375c JB |
310 | sta->sta_state = IEEE80211_STA_NONE; |
311 | ||
b6da911b LK |
312 | /* Mark TID as unreserved */ |
313 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
314 | ||
18171520 | 315 | ktime_get_ts(&uptime); |
ebe27c91 | 316 | sta->last_connected = uptime.tv_sec; |
541a45a1 | 317 | ewma_init(&sta->avg_signal, 1024, 8); |
ef0621e8 FF |
318 | for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++) |
319 | ewma_init(&sta->chain_signal_avg[i], 1024, 8); | |
541a45a1 | 320 | |
ba8c3d6f FF |
321 | if (local->ops->wake_tx_queue) { |
322 | void *txq_data; | |
323 | int size = sizeof(struct txq_info) + | |
324 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
325 | ||
326 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
327 | if (!txq_data) | |
328 | goto free; | |
329 | ||
330 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
331 | struct txq_info *txq = txq_data + i * size; | |
332 | ||
333 | ieee80211_init_tx_queue(sdata, sta, txq, i); | |
334 | } | |
abfbc3af | 335 | } |
f0706e82 | 336 | |
ba8c3d6f FF |
337 | if (sta_prepare_rate_control(local, sta, gfp)) |
338 | goto free_txq; | |
339 | ||
5a306f58 | 340 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
a622ab72 JB |
341 | /* |
342 | * timer_to_tid must be initialized with identity mapping | |
343 | * to enable session_timer's data differentiation. See | |
344 | * sta_rx_agg_session_timer_expired for usage. | |
345 | */ | |
16c5f15c | 346 | sta->timer_to_tid[i] = i; |
16c5f15c | 347 | } |
948d887d JB |
348 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
349 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
350 | skb_queue_head_init(&sta->tx_filtered[i]); | |
351 | } | |
73651ee6 | 352 | |
5a306f58 | 353 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 354 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 355 | |
af0ed69b | 356 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
357 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
358 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
359 | struct ieee80211_supported_band *sband = | |
ba8c3d6f | 360 | hw->wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
687da132 EG |
361 | u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
362 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
363 | /* | |
364 | * Assume that hostapd advertises our caps in the beacon and | |
365 | * this is the known_smps_mode for a station that just assciated | |
366 | */ | |
367 | switch (smps) { | |
368 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
369 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
370 | break; | |
371 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
372 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
373 | break; | |
374 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
375 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
376 | break; | |
377 | default: | |
378 | WARN_ON(1); | |
379 | } | |
380 | } | |
af0ed69b | 381 | |
bdcbd8e0 | 382 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 383 | |
abfbc3af | 384 | return sta; |
ba8c3d6f FF |
385 | |
386 | free_txq: | |
387 | if (sta->sta.txq[0]) | |
388 | kfree(to_txq_info(sta->sta.txq[0])); | |
389 | free: | |
390 | kfree(sta); | |
391 | return NULL; | |
73651ee6 JB |
392 | } |
393 | ||
8c71df7a | 394 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 395 | { |
34e89507 | 396 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 397 | |
03e4497e JB |
398 | /* |
399 | * Can't be a WARN_ON because it can be triggered through a race: | |
400 | * something inserts a STA (on one CPU) without holding the RTNL | |
401 | * and another CPU turns off the net device. | |
402 | */ | |
8c71df7a GE |
403 | if (unlikely(!ieee80211_sdata_running(sdata))) |
404 | return -ENETDOWN; | |
03e4497e | 405 | |
b203ca39 | 406 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
407 | is_multicast_ether_addr(sta->sta.addr))) |
408 | return -EINVAL; | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
f09603a2 JB |
413 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
414 | struct ieee80211_sub_if_data *sdata, | |
415 | struct sta_info *sta) | |
416 | { | |
417 | enum ieee80211_sta_state state; | |
418 | int err = 0; | |
419 | ||
420 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
421 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
422 | if (err) | |
423 | break; | |
424 | } | |
425 | ||
426 | if (!err) { | |
a4ec45a4 JB |
427 | /* |
428 | * Drivers using legacy sta_add/sta_remove callbacks only | |
429 | * get uploaded set to true after sta_add is called. | |
430 | */ | |
431 | if (!local->ops->sta_add) | |
432 | sta->uploaded = true; | |
f09603a2 JB |
433 | return 0; |
434 | } | |
435 | ||
436 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
437 | sdata_info(sdata, |
438 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
439 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
440 | err = 0; |
441 | } | |
442 | ||
443 | /* unwind on error */ | |
444 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
445 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
446 | ||
447 | return err; | |
448 | } | |
449 | ||
8c71df7a GE |
450 | /* |
451 | * should be called with sta_mtx locked | |
452 | * this function replaces the mutex lock | |
453 | * with a RCU lock | |
454 | */ | |
4d33960b | 455 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
456 | { |
457 | struct ieee80211_local *local = sta->local; | |
458 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
7852e361 | 459 | struct station_info sinfo; |
8c71df7a GE |
460 | int err = 0; |
461 | ||
462 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 463 | |
7852e361 JB |
464 | /* check if STA exists already */ |
465 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
466 | err = -EEXIST; | |
467 | goto out_err; | |
4d33960b | 468 | } |
32bfd35d | 469 | |
7852e361 JB |
470 | local->num_sta++; |
471 | local->sta_generation++; | |
472 | smp_mb(); | |
4d33960b | 473 | |
5108ca82 JB |
474 | /* simplify things and don't accept BA sessions yet */ |
475 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
476 | ||
7852e361 JB |
477 | /* make the station visible */ |
478 | sta_info_hash_add(local, sta); | |
83d5cc01 | 479 | |
2bad7748 | 480 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 481 | |
5108ca82 JB |
482 | /* notify driver */ |
483 | err = sta_info_insert_drv_state(local, sdata, sta); | |
484 | if (err) | |
485 | goto out_remove; | |
486 | ||
7852e361 | 487 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
488 | /* accept BA sessions now */ |
489 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 490 | |
21f659bf | 491 | ieee80211_recalc_min_chandef(sdata); |
7852e361 JB |
492 | ieee80211_sta_debugfs_add(sta); |
493 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 494 | |
7852e361 JB |
495 | memset(&sinfo, 0, sizeof(sinfo)); |
496 | sinfo.filled = 0; | |
497 | sinfo.generation = local->sta_generation; | |
498 | cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
d0709a65 | 499 | |
bdcbd8e0 | 500 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 501 | |
34e89507 JB |
502 | /* move reference to rcu-protected */ |
503 | rcu_read_lock(); | |
504 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 505 | |
73651ee6 JB |
506 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
507 | mesh_accept_plinks_update(sdata); | |
508 | ||
8c71df7a | 509 | return 0; |
5108ca82 JB |
510 | out_remove: |
511 | sta_info_hash_del(local, sta); | |
512 | list_del_rcu(&sta->list); | |
513 | local->num_sta--; | |
514 | synchronize_net(); | |
515 | __cleanup_single_sta(sta); | |
4d33960b JB |
516 | out_err: |
517 | mutex_unlock(&local->sta_mtx); | |
518 | rcu_read_lock(); | |
519 | return err; | |
8c71df7a GE |
520 | } |
521 | ||
522 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
523 | { | |
524 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 525 | int err; |
8c71df7a | 526 | |
4d33960b JB |
527 | might_sleep(); |
528 | ||
8c71df7a GE |
529 | err = sta_info_insert_check(sta); |
530 | if (err) { | |
531 | rcu_read_lock(); | |
532 | goto out_free; | |
533 | } | |
534 | ||
8c71df7a GE |
535 | mutex_lock(&local->sta_mtx); |
536 | ||
4d33960b | 537 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
538 | if (err) |
539 | goto out_free; | |
540 | ||
73651ee6 | 541 | return 0; |
93e5deb1 | 542 | out_free: |
d9a7ddb0 | 543 | sta_info_free(local, sta); |
93e5deb1 | 544 | return err; |
f0706e82 JB |
545 | } |
546 | ||
34e89507 JB |
547 | int sta_info_insert(struct sta_info *sta) |
548 | { | |
549 | int err = sta_info_insert_rcu(sta); | |
550 | ||
551 | rcu_read_unlock(); | |
552 | ||
553 | return err; | |
554 | } | |
555 | ||
d012a605 | 556 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
557 | { |
558 | /* | |
559 | * This format has been mandated by the IEEE specifications, | |
560 | * so this line may not be changed to use the __set_bit() format. | |
561 | */ | |
d012a605 | 562 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
563 | } |
564 | ||
d012a605 | 565 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
566 | { |
567 | /* | |
568 | * This format has been mandated by the IEEE specifications, | |
569 | * so this line may not be changed to use the __clear_bit() format. | |
570 | */ | |
d012a605 | 571 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
572 | } |
573 | ||
3d5839b6 IP |
574 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
575 | { | |
576 | /* | |
577 | * This format has been mandated by the IEEE specifications, | |
578 | * so this line may not be changed to use the test_bit() format. | |
579 | */ | |
580 | return tim[id / 8] & (1 << (id % 8)); | |
581 | } | |
582 | ||
948d887d | 583 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 584 | { |
948d887d JB |
585 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
586 | switch (ac) { | |
587 | case IEEE80211_AC_VO: | |
588 | return BIT(6) | BIT(7); | |
589 | case IEEE80211_AC_VI: | |
590 | return BIT(4) | BIT(5); | |
591 | case IEEE80211_AC_BE: | |
592 | return BIT(0) | BIT(3); | |
593 | case IEEE80211_AC_BK: | |
594 | return BIT(1) | BIT(2); | |
595 | default: | |
596 | WARN_ON(1); | |
597 | return 0; | |
d0709a65 | 598 | } |
004c872e JB |
599 | } |
600 | ||
9b7a86f3 | 601 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 602 | { |
c868cb35 | 603 | struct ieee80211_local *local = sta->local; |
d012a605 | 604 | struct ps_data *ps; |
948d887d JB |
605 | bool indicate_tim = false; |
606 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
607 | int ac; | |
d012a605 MP |
608 | u16 id; |
609 | ||
610 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
611 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
612 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
613 | return; | |
004c872e | 614 | |
d012a605 MP |
615 | ps = &sta->sdata->bss->ps; |
616 | id = sta->sta.aid; | |
3f52b7e3 MP |
617 | #ifdef CONFIG_MAC80211_MESH |
618 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
619 | ps = &sta->sdata->u.mesh.ps; | |
204d1304 | 620 | /* TIM map only for 1 <= PLID <= IEEE80211_MAX_AID */ |
6f101ef0 | 621 | id = sta->plid % (IEEE80211_MAX_AID + 1); |
3f52b7e3 | 622 | #endif |
d012a605 | 623 | } else { |
c868cb35 | 624 | return; |
d012a605 | 625 | } |
3e122be0 | 626 | |
c868cb35 JB |
627 | /* No need to do anything if the driver does all */ |
628 | if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) | |
629 | return; | |
004c872e | 630 | |
c868cb35 JB |
631 | if (sta->dead) |
632 | goto done; | |
3e122be0 | 633 | |
948d887d JB |
634 | /* |
635 | * If all ACs are delivery-enabled then we should build | |
636 | * the TIM bit for all ACs anyway; if only some are then | |
637 | * we ignore those and build the TIM bit using only the | |
638 | * non-enabled ones. | |
639 | */ | |
640 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
641 | ignore_for_tim = 0; | |
642 | ||
9b7a86f3 JB |
643 | if (ignore_pending) |
644 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
645 | ||
948d887d JB |
646 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
647 | unsigned long tids; | |
3e122be0 | 648 | |
948d887d JB |
649 | if (ignore_for_tim & BIT(ac)) |
650 | continue; | |
651 | ||
652 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
653 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
654 | if (indicate_tim) | |
655 | break; | |
3e122be0 | 656 | |
948d887d JB |
657 | tids = ieee80211_tids_for_ac(ac); |
658 | ||
659 | indicate_tim |= | |
660 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
661 | indicate_tim |= |
662 | sta->txq_buffered_tids & tids; | |
d0709a65 | 663 | } |
004c872e | 664 | |
c868cb35 | 665 | done: |
65f704a5 | 666 | spin_lock_bh(&local->tim_lock); |
004c872e | 667 | |
3d5839b6 IP |
668 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
669 | goto out_unlock; | |
670 | ||
948d887d | 671 | if (indicate_tim) |
d012a605 | 672 | __bss_tim_set(ps->tim, id); |
c868cb35 | 673 | else |
d012a605 | 674 | __bss_tim_clear(ps->tim, id); |
004c872e | 675 | |
9b7a86f3 | 676 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 677 | local->tim_in_locked_section = true; |
948d887d | 678 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
679 | local->tim_in_locked_section = false; |
680 | } | |
3e122be0 | 681 | |
3d5839b6 | 682 | out_unlock: |
65f704a5 | 683 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
684 | } |
685 | ||
9b7a86f3 JB |
686 | void sta_info_recalc_tim(struct sta_info *sta) |
687 | { | |
688 | __sta_info_recalc_tim(sta, false); | |
689 | } | |
690 | ||
cd0b8d89 | 691 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 692 | { |
e039fa4a | 693 | struct ieee80211_tx_info *info; |
f0706e82 JB |
694 | int timeout; |
695 | ||
696 | if (!skb) | |
cd0b8d89 | 697 | return false; |
f0706e82 | 698 | |
e039fa4a | 699 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
700 | |
701 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
702 | timeout = (sta->listen_interval * |
703 | sta->sdata->vif.bss_conf.beacon_int * | |
704 | 32 / 15625) * HZ; | |
f0706e82 JB |
705 | if (timeout < STA_TX_BUFFER_EXPIRE) |
706 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 707 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
708 | } |
709 | ||
710 | ||
948d887d JB |
711 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
712 | struct sta_info *sta, int ac) | |
f0706e82 JB |
713 | { |
714 | unsigned long flags; | |
715 | struct sk_buff *skb; | |
716 | ||
60750397 JB |
717 | /* |
718 | * First check for frames that should expire on the filtered | |
719 | * queue. Frames here were rejected by the driver and are on | |
720 | * a separate queue to avoid reordering with normal PS-buffered | |
721 | * frames. They also aren't accounted for right now in the | |
722 | * total_ps_buffered counter. | |
723 | */ | |
724 | for (;;) { | |
948d887d JB |
725 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
726 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 727 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 728 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
729 | else |
730 | skb = NULL; | |
948d887d | 731 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
732 | |
733 | /* | |
734 | * Frames are queued in order, so if this one | |
735 | * hasn't expired yet we can stop testing. If | |
736 | * we actually reached the end of the queue we | |
737 | * also need to stop, of course. | |
738 | */ | |
739 | if (!skb) | |
740 | break; | |
d4fa14cd | 741 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
742 | } |
743 | ||
744 | /* | |
745 | * Now also check the normal PS-buffered queue, this will | |
746 | * only find something if the filtered queue was emptied | |
747 | * since the filtered frames are all before the normal PS | |
748 | * buffered frames. | |
749 | */ | |
f0706e82 | 750 | for (;;) { |
948d887d JB |
751 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
752 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 753 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 754 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 755 | else |
f0706e82 | 756 | skb = NULL; |
948d887d | 757 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 758 | |
60750397 JB |
759 | /* |
760 | * frames are queued in order, so if this one | |
761 | * hasn't expired yet (or we reached the end of | |
762 | * the queue) we can stop testing | |
763 | */ | |
836341a7 | 764 | if (!skb) |
f0706e82 | 765 | break; |
836341a7 | 766 | |
836341a7 | 767 | local->total_ps_buffered--; |
bdcbd8e0 JB |
768 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
769 | sta->sta.addr); | |
d4fa14cd | 770 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 771 | } |
3393a608 | 772 | |
60750397 JB |
773 | /* |
774 | * Finally, recalculate the TIM bit for this station -- it might | |
775 | * now be clear because the station was too slow to retrieve its | |
776 | * frames. | |
777 | */ | |
778 | sta_info_recalc_tim(sta); | |
779 | ||
780 | /* | |
781 | * Return whether there are any frames still buffered, this is | |
782 | * used to check whether the cleanup timer still needs to run, | |
783 | * if there are no frames we don't need to rearm the timer. | |
784 | */ | |
948d887d JB |
785 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
786 | skb_queue_empty(&sta->tx_filtered[ac])); | |
787 | } | |
788 | ||
789 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
790 | struct sta_info *sta) | |
791 | { | |
792 | bool have_buffered = false; | |
793 | int ac; | |
794 | ||
3f52b7e3 MP |
795 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
796 | if (!sta->sdata->bss && | |
797 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
798 | return false; |
799 | ||
800 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
801 | have_buffered |= | |
802 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
803 | ||
804 | return have_buffered; | |
f0706e82 JB |
805 | } |
806 | ||
d778207b | 807 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 808 | { |
34e89507 JB |
809 | struct ieee80211_local *local; |
810 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 811 | int ret; |
f0706e82 | 812 | |
34e89507 | 813 | might_sleep(); |
f0706e82 | 814 | |
34e89507 JB |
815 | if (!sta) |
816 | return -ENOENT; | |
5bb644a0 | 817 | |
34e89507 JB |
818 | local = sta->local; |
819 | sdata = sta->sdata; | |
f0706e82 | 820 | |
83d5cc01 JB |
821 | lockdep_assert_held(&local->sta_mtx); |
822 | ||
098a6070 JB |
823 | /* |
824 | * Before removing the station from the driver and | |
825 | * rate control, it might still start new aggregation | |
826 | * sessions -- block that to make sure the tear-down | |
827 | * will be sufficient. | |
828 | */ | |
c2c98fde | 829 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 830 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 831 | |
34e89507 | 832 | ret = sta_info_hash_del(local, sta); |
b01711be | 833 | if (WARN_ON(ret)) |
34e89507 JB |
834 | return ret; |
835 | ||
a7a6bdd0 AN |
836 | /* |
837 | * for TDLS peers, make sure to return to the base channel before | |
838 | * removal. | |
839 | */ | |
840 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
841 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
842 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
843 | } | |
844 | ||
794454ce | 845 | list_del_rcu(&sta->list); |
4d33960b | 846 | |
6a9d1b91 JB |
847 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
848 | ||
a710c816 JB |
849 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
850 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
851 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
852 | ||
d778207b JB |
853 | return 0; |
854 | } | |
855 | ||
856 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
857 | { | |
858 | struct ieee80211_local *local = sta->local; | |
859 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
6f7a8d26 | 860 | struct station_info sinfo = {}; |
d778207b JB |
861 | int ret; |
862 | ||
863 | /* | |
864 | * NOTE: This assumes at least synchronize_net() was done | |
865 | * after _part1 and before _part2! | |
866 | */ | |
867 | ||
868 | might_sleep(); | |
869 | lockdep_assert_held(&local->sta_mtx); | |
870 | ||
c8782078 | 871 | /* now keys can no longer be reached */ |
6d10e46b | 872 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 873 | |
9b7a86f3 JB |
874 | /* disable TIM bit - last chance to tell driver */ |
875 | __sta_info_recalc_tim(sta, true); | |
876 | ||
34e89507 JB |
877 | sta->dead = true; |
878 | ||
34e89507 JB |
879 | local->num_sta--; |
880 | local->sta_generation++; | |
881 | ||
83d5cc01 | 882 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
883 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
884 | if (ret) { | |
83d5cc01 JB |
885 | WARN_ON_ONCE(1); |
886 | break; | |
887 | } | |
888 | } | |
d9a7ddb0 | 889 | |
f09603a2 | 890 | if (sta->uploaded) { |
f09603a2 JB |
891 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
892 | IEEE80211_STA_NOTEXIST); | |
893 | WARN_ON_ONCE(ret != 0); | |
894 | } | |
34e89507 | 895 | |
bdcbd8e0 JB |
896 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
897 | ||
6f7a8d26 JB |
898 | sta_set_sinfo(sta, &sinfo); |
899 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
ec15e68b | 900 | |
34e89507 JB |
901 | rate_control_remove_sta_debugfs(sta); |
902 | ieee80211_sta_debugfs_remove(sta); | |
21f659bf | 903 | ieee80211_recalc_min_chandef(sdata); |
34e89507 | 904 | |
d34ba216 | 905 | cleanup_single_sta(sta); |
d778207b JB |
906 | } |
907 | ||
908 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
909 | { | |
910 | int err = __sta_info_destroy_part1(sta); | |
911 | ||
912 | if (err) | |
913 | return err; | |
914 | ||
915 | synchronize_net(); | |
916 | ||
917 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
918 | |
919 | return 0; | |
4d6141c3 JS |
920 | } |
921 | ||
34e89507 | 922 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 923 | { |
34e89507 JB |
924 | struct sta_info *sta; |
925 | int ret; | |
4d6141c3 | 926 | |
34e89507 | 927 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 928 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
929 | ret = __sta_info_destroy(sta); |
930 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
931 | |
932 | return ret; | |
933 | } | |
934 | ||
34e89507 JB |
935 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
936 | const u8 *addr) | |
e9f207f0 | 937 | { |
34e89507 JB |
938 | struct sta_info *sta; |
939 | int ret; | |
e9f207f0 | 940 | |
34e89507 | 941 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 942 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
943 | ret = __sta_info_destroy(sta); |
944 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 945 | |
34e89507 JB |
946 | return ret; |
947 | } | |
e9f207f0 | 948 | |
34e89507 JB |
949 | static void sta_info_cleanup(unsigned long data) |
950 | { | |
951 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
952 | struct sta_info *sta; | |
3393a608 | 953 | bool timer_needed = false; |
34e89507 JB |
954 | |
955 | rcu_read_lock(); | |
956 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
957 | if (sta_info_cleanup_expire_buffered(local, sta)) |
958 | timer_needed = true; | |
34e89507 | 959 | rcu_read_unlock(); |
e9f207f0 | 960 | |
34e89507 JB |
961 | if (local->quiescing) |
962 | return; | |
d0709a65 | 963 | |
3393a608 JO |
964 | if (!timer_needed) |
965 | return; | |
966 | ||
26d59535 JB |
967 | mod_timer(&local->sta_cleanup, |
968 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 969 | } |
e9f207f0 | 970 | |
7bedd0cf | 971 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 972 | { |
7bedd0cf JB |
973 | return jhash(key, ETH_ALEN, seed); |
974 | } | |
975 | ||
976 | int sta_info_init(struct ieee80211_local *local) | |
977 | { | |
978 | int err; | |
979 | ||
980 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
981 | if (err) | |
982 | return err; | |
983 | ||
4d33960b | 984 | spin_lock_init(&local->tim_lock); |
34e89507 | 985 | mutex_init(&local->sta_mtx); |
f0706e82 | 986 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 987 | |
b24b8a24 PE |
988 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
989 | (unsigned long)local); | |
7bedd0cf | 990 | return 0; |
f0706e82 JB |
991 | } |
992 | ||
993 | void sta_info_stop(struct ieee80211_local *local) | |
994 | { | |
a56f992c | 995 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 996 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
997 | } |
998 | ||
051007d9 | 999 | |
e716251d | 1000 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1001 | { |
b998e8bb | 1002 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1003 | struct sta_info *sta, *tmp; |
d778207b | 1004 | LIST_HEAD(free_list); |
44213b5e | 1005 | int ret = 0; |
f0706e82 | 1006 | |
d0709a65 | 1007 | might_sleep(); |
be8755e1 | 1008 | |
e716251d JB |
1009 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1010 | WARN_ON(vlans && !sdata->bss); | |
1011 | ||
34e89507 | 1012 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1013 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1014 | if (sdata == sta->sdata || |
1015 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1016 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1017 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1018 | ret++; |
1019 | } | |
be8755e1 | 1020 | } |
d778207b JB |
1021 | |
1022 | if (!list_empty(&free_list)) { | |
1023 | synchronize_net(); | |
1024 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1025 | __sta_info_destroy_part2(sta); | |
1026 | } | |
34e89507 | 1027 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1028 | |
051007d9 JB |
1029 | return ret; |
1030 | } | |
1031 | ||
24723d1b JB |
1032 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1033 | unsigned long exp_time) | |
1034 | { | |
1035 | struct ieee80211_local *local = sdata->local; | |
1036 | struct sta_info *sta, *tmp; | |
24723d1b | 1037 | |
34e89507 | 1038 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1039 | |
1040 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
ec2b774e ML |
1041 | if (sdata != sta->sdata) |
1042 | continue; | |
1043 | ||
24723d1b | 1044 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
eea57d42 MSS |
1045 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1046 | sta->sta.addr); | |
3f52b7e3 MP |
1047 | |
1048 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1049 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1050 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1051 | ||
34e89507 | 1052 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1053 | } |
e46a2cf9 MSS |
1054 | } |
1055 | ||
34e89507 | 1056 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1057 | } |
17741cdc | 1058 | |
686b9cb9 | 1059 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1060 | const u8 *addr, |
1061 | const u8 *localaddr) | |
17741cdc | 1062 | { |
7bedd0cf JB |
1063 | struct ieee80211_local *local = hw_to_local(hw); |
1064 | struct sta_info *sta; | |
1065 | struct rhash_head *tmp; | |
1066 | const struct bucket_table *tbl; | |
1067 | ||
1068 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1069 | |
686b9cb9 BG |
1070 | /* |
1071 | * Just return a random station if localaddr is NULL | |
1072 | * ... first in list. | |
1073 | */ | |
7bedd0cf | 1074 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1075 | if (localaddr && |
b203ca39 | 1076 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1077 | continue; |
f7c65594 JB |
1078 | if (!sta->uploaded) |
1079 | return NULL; | |
abe60632 | 1080 | return &sta->sta; |
f7c65594 JB |
1081 | } |
1082 | ||
abe60632 | 1083 | return NULL; |
17741cdc | 1084 | } |
686b9cb9 | 1085 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1086 | |
1087 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1088 | const u8 *addr) | |
1089 | { | |
f7c65594 | 1090 | struct sta_info *sta; |
5ed176e1 JB |
1091 | |
1092 | if (!vif) | |
1093 | return NULL; | |
1094 | ||
f7c65594 JB |
1095 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1096 | if (!sta) | |
1097 | return NULL; | |
1098 | ||
1099 | if (!sta->uploaded) | |
1100 | return NULL; | |
5ed176e1 | 1101 | |
f7c65594 | 1102 | return &sta->sta; |
5ed176e1 | 1103 | } |
17741cdc | 1104 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1105 | |
e3685e03 JB |
1106 | /* powersave support code */ |
1107 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1108 | { |
608383bf | 1109 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1110 | struct ieee80211_local *local = sdata->local; |
1111 | struct sk_buff_head pending; | |
ba8c3d6f | 1112 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1113 | unsigned long flags; |
d012a605 MP |
1114 | struct ps_data *ps; |
1115 | ||
3918edb0 FF |
1116 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1117 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1118 | u.ap); | |
1119 | ||
1120 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1121 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1122 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1123 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1124 | else |
1125 | return; | |
50a9432d | 1126 | |
c2c98fde | 1127 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1128 | |
5a306f58 | 1129 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1130 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1131 | sta->txq_buffered_tids = 0; |
af818581 | 1132 | |
d057e5a3 AN |
1133 | if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS)) |
1134 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); | |
af818581 | 1135 | |
ba8c3d6f FF |
1136 | if (sta->sta.txq[0]) { |
1137 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1138 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1139 | ||
1140 | if (!skb_queue_len(&txqi->queue)) | |
1141 | continue; | |
1142 | ||
1143 | drv_wake_tx_queue(local, txqi); | |
1144 | } | |
1145 | } | |
1146 | ||
948d887d | 1147 | skb_queue_head_init(&pending); |
af818581 | 1148 | |
1d147bfa EG |
1149 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1150 | spin_lock(&sta->ps_lock); | |
af818581 | 1151 | /* Send all buffered frames to the station */ |
948d887d JB |
1152 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1153 | int count = skb_queue_len(&pending), tmp; | |
1154 | ||
987c285c | 1155 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1156 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1157 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1158 | tmp = skb_queue_len(&pending); |
1159 | filtered += tmp - count; | |
1160 | count = tmp; | |
1161 | ||
987c285c | 1162 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1163 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1164 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1165 | tmp = skb_queue_len(&pending); |
1166 | buffered += tmp - count; | |
1167 | } | |
1168 | ||
e3685e03 | 1169 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1170 | |
1171 | /* now we're no longer in the deliver code */ | |
1172 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1173 | ||
1174 | /* The station might have polled and then woken up before we responded, | |
1175 | * so clear these flags now to avoid them sticking around. | |
1176 | */ | |
1177 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1178 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1179 | spin_unlock(&sta->ps_lock); |
948d887d | 1180 | |
e3685e03 JB |
1181 | atomic_dec(&ps->num_sta_ps); |
1182 | ||
687da132 | 1183 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1184 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1185 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1186 | sdata->smps_mode) && |
1187 | sta->known_smps_mode != sdata->bss->req_smps && | |
1188 | sta_info_tx_streams(sta) != 1) { | |
1189 | ht_dbg(sdata, | |
1190 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1191 | sta->sta.addr); | |
1192 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1193 | sta->sta.addr, | |
1194 | sdata->vif.bss_conf.bssid); | |
1195 | } | |
1196 | ||
af818581 JB |
1197 | local->total_ps_buffered -= buffered; |
1198 | ||
c868cb35 JB |
1199 | sta_info_recalc_tim(sta); |
1200 | ||
bdcbd8e0 JB |
1201 | ps_dbg(sdata, |
1202 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1203 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
af818581 JB |
1204 | } |
1205 | ||
ce662b44 JB |
1206 | static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, |
1207 | struct sta_info *sta, int tid, | |
b77cf4f8 JB |
1208 | enum ieee80211_frame_release_type reason, |
1209 | bool call_driver) | |
af818581 | 1210 | { |
af818581 | 1211 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1212 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1213 | struct sk_buff *skb; |
ce662b44 JB |
1214 | int size = sizeof(*nullfunc); |
1215 | __le16 fc; | |
a74a8c84 | 1216 | bool qos = sta->sta.wme; |
ce662b44 | 1217 | struct ieee80211_tx_info *info; |
55de908a | 1218 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1219 | |
ce662b44 JB |
1220 | if (qos) { |
1221 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1222 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1223 | IEEE80211_FCTL_FROMDS); | |
1224 | } else { | |
1225 | size -= 2; | |
1226 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1227 | IEEE80211_STYPE_NULLFUNC | | |
1228 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1229 | } |
af818581 | 1230 | |
ce662b44 JB |
1231 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1232 | if (!skb) | |
1233 | return; | |
1234 | ||
1235 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1236 | ||
1237 | nullfunc = (void *) skb_put(skb, size); | |
1238 | nullfunc->frame_control = fc; | |
1239 | nullfunc->duration_id = 0; | |
1240 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1241 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1242 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1243 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1244 | |
59b66255 JB |
1245 | skb->priority = tid; |
1246 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1247 | if (qos) { |
ce662b44 JB |
1248 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1249 | ||
40b96408 | 1250 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
ce662b44 JB |
1251 | nullfunc->qos_ctrl |= |
1252 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
1253 | } | |
1254 | ||
1255 | info = IEEE80211_SKB_CB(skb); | |
1256 | ||
1257 | /* | |
1258 | * Tell TX path to send this frame even though the | |
1259 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1260 | * exchange. Also set EOSP to indicate this packet |
1261 | * ends the poll/service period. | |
ce662b44 | 1262 | */ |
02f2f1a9 | 1263 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1264 | IEEE80211_TX_STATUS_EOSP | |
1265 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1266 | |
6b127c71 SM |
1267 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1268 | ||
b77cf4f8 JB |
1269 | if (call_driver) |
1270 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1271 | reason, false); | |
40b96408 | 1272 | |
89afe614 JB |
1273 | skb->dev = sdata->dev; |
1274 | ||
55de908a JB |
1275 | rcu_read_lock(); |
1276 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1277 | if (WARN_ON(!chanctx_conf)) { | |
1278 | rcu_read_unlock(); | |
1279 | kfree_skb(skb); | |
1280 | return; | |
1281 | } | |
1282 | ||
73c4e195 | 1283 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1284 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1285 | rcu_read_unlock(); |
ce662b44 JB |
1286 | } |
1287 | ||
0a1cb809 JB |
1288 | static int find_highest_prio_tid(unsigned long tids) |
1289 | { | |
1290 | /* lower 3 TIDs aren't ordered perfectly */ | |
1291 | if (tids & 0xF8) | |
1292 | return fls(tids) - 1; | |
1293 | /* TID 0 is BE just like TID 3 */ | |
1294 | if (tids & BIT(0)) | |
1295 | return 0; | |
1296 | return fls(tids) - 1; | |
1297 | } | |
1298 | ||
47086fc5 JB |
1299 | static void |
1300 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1301 | int n_frames, u8 ignored_acs, | |
1302 | enum ieee80211_frame_release_type reason) | |
af818581 JB |
1303 | { |
1304 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1305 | struct ieee80211_local *local = sdata->local; | |
948d887d JB |
1306 | bool more_data = false; |
1307 | int ac; | |
4049e09a | 1308 | unsigned long driver_release_tids = 0; |
47086fc5 | 1309 | struct sk_buff_head frames; |
af818581 | 1310 | |
deeaee19 | 1311 | /* Service or PS-Poll period starts */ |
c2c98fde | 1312 | set_sta_flag(sta, WLAN_STA_SP); |
deeaee19 | 1313 | |
47086fc5 | 1314 | __skb_queue_head_init(&frames); |
948d887d | 1315 | |
f9f760b4 | 1316 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1317 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1318 | unsigned long tids; |
1319 | ||
47086fc5 | 1320 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1321 | continue; |
1322 | ||
4049e09a JB |
1323 | tids = ieee80211_tids_for_ac(ac); |
1324 | ||
f9f760b4 JB |
1325 | /* if we already have frames from software, then we can't also |
1326 | * release from hardware queues | |
1327 | */ | |
ba8c3d6f | 1328 | if (skb_queue_empty(&frames)) { |
f9f760b4 | 1329 | driver_release_tids |= sta->driver_buffered_tids & tids; |
ba8c3d6f FF |
1330 | driver_release_tids |= sta->txq_buffered_tids & tids; |
1331 | } | |
948d887d | 1332 | |
f9f760b4 JB |
1333 | if (driver_release_tids) { |
1334 | /* If the driver has data on more than one TID then | |
4049e09a | 1335 | * certainly there's more data if we release just a |
f9f760b4 JB |
1336 | * single frame now (from a single TID). This will |
1337 | * only happen for PS-Poll. | |
4049e09a | 1338 | */ |
47086fc5 JB |
1339 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
1340 | hweight16(driver_release_tids) > 1) { | |
4049e09a JB |
1341 | more_data = true; |
1342 | driver_release_tids = | |
0a1cb809 JB |
1343 | BIT(find_highest_prio_tid( |
1344 | driver_release_tids)); | |
4049e09a JB |
1345 | break; |
1346 | } | |
f9f760b4 JB |
1347 | } else { |
1348 | struct sk_buff *skb; | |
1349 | ||
1350 | while (n_frames > 0) { | |
1351 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1352 | if (!skb) { | |
1353 | skb = skb_dequeue( | |
1354 | &sta->ps_tx_buf[ac]); | |
1355 | if (skb) | |
1356 | local->total_ps_buffered--; | |
1357 | } | |
1358 | if (!skb) | |
1359 | break; | |
1360 | n_frames--; | |
1361 | __skb_queue_tail(&frames, skb); | |
1362 | } | |
4049e09a | 1363 | } |
948d887d | 1364 | |
f9f760b4 JB |
1365 | /* If we have more frames buffered on this AC, then set the |
1366 | * more-data bit and abort the loop since we can't send more | |
1367 | * data from other ACs before the buffered frames from this. | |
1368 | */ | |
948d887d JB |
1369 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
1370 | !skb_queue_empty(&sta->ps_tx_buf[ac])) { | |
1371 | more_data = true; | |
1372 | break; | |
1373 | } | |
af818581 | 1374 | } |
af818581 | 1375 | |
f9f760b4 | 1376 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1377 | int tid; |
af818581 JB |
1378 | |
1379 | /* | |
ce662b44 JB |
1380 | * For PS-Poll, this can only happen due to a race condition |
1381 | * when we set the TIM bit and the station notices it, but | |
1382 | * before it can poll for the frame we expire it. | |
1383 | * | |
1384 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1385 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1386 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1387 | * more than the value specified in the Max SP Length field | |
1388 | * in the QoS Capability element from delivery-enabled ACs, | |
1389 | * that are destined for the non-AP STA. | |
1390 | * | |
1391 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1392 | */ |
af818581 | 1393 | |
ce662b44 JB |
1394 | /* This will evaluate to 1, 3, 5 or 7. */ |
1395 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1396 | |
b77cf4f8 | 1397 | ieee80211_send_null_response(sdata, sta, tid, reason, true); |
f9f760b4 | 1398 | } else if (!driver_release_tids) { |
47086fc5 JB |
1399 | struct sk_buff_head pending; |
1400 | struct sk_buff *skb; | |
40b96408 JB |
1401 | int num = 0; |
1402 | u16 tids = 0; | |
b77cf4f8 | 1403 | bool need_null = false; |
af818581 | 1404 | |
47086fc5 | 1405 | skb_queue_head_init(&pending); |
af818581 | 1406 | |
47086fc5 JB |
1407 | while ((skb = __skb_dequeue(&frames))) { |
1408 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1409 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1410 | u8 *qoshdr = NULL; |
1411 | ||
1412 | num++; | |
af818581 | 1413 | |
47086fc5 JB |
1414 | /* |
1415 | * Tell TX path to send this frame even though the | |
1416 | * STA may still remain is PS mode after this frame | |
1417 | * exchange. | |
1418 | */ | |
6b127c71 SM |
1419 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1420 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1421 | |
1422 | /* | |
1423 | * Use MoreData flag to indicate whether there are | |
1424 | * more buffered frames for this STA | |
1425 | */ | |
24b9c373 | 1426 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1427 | hdr->frame_control |= |
1428 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1429 | else |
1430 | hdr->frame_control &= | |
1431 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1432 | |
40b96408 JB |
1433 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1434 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1435 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1436 | ||
b77cf4f8 | 1437 | tids |= BIT(skb->priority); |
52a3f20c | 1438 | |
b77cf4f8 JB |
1439 | __skb_queue_tail(&pending, skb); |
1440 | ||
1441 | /* end service period after last frame or add one */ | |
1442 | if (!skb_queue_empty(&frames)) | |
1443 | continue; | |
1444 | ||
1445 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1446 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1447 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1448 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1449 | break; |
52a3f20c | 1450 | } |
deeaee19 | 1451 | |
b77cf4f8 JB |
1452 | /* For uAPSD, things are a bit more complicated. If the |
1453 | * last frame has a QoS header (i.e. is a QoS-data or | |
1454 | * QoS-nulldata frame) then just set the EOSP bit there | |
1455 | * and be done. | |
1456 | * If the frame doesn't have a QoS header (which means | |
1457 | * it should be a bufferable MMPDU) then we can't set | |
1458 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1459 | * frame to the list to send it after the MMPDU. | |
1460 | * | |
1461 | * Note that this code is only in the mac80211-release | |
1462 | * code path, we assume that the driver will not buffer | |
1463 | * anything but QoS-data frames, or if it does, will | |
1464 | * create the QoS-nulldata frame by itself if needed. | |
1465 | * | |
1466 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1467 | */ | |
1468 | if (qoshdr) { | |
1469 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1470 | |
b77cf4f8 JB |
1471 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1472 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1473 | } else { | |
1474 | /* The standard isn't completely clear on this | |
1475 | * as it says the more-data bit should be set | |
1476 | * if there are more BUs. The QoS-Null frame | |
1477 | * we're about to send isn't buffered yet, we | |
1478 | * only create it below, but let's pretend it | |
1479 | * was buffered just in case some clients only | |
1480 | * expect more-data=0 when eosp=1. | |
1481 | */ | |
1482 | hdr->frame_control |= | |
1483 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1484 | need_null = true; | |
1485 | num++; | |
1486 | } | |
1487 | break; | |
47086fc5 | 1488 | } |
af818581 | 1489 | |
40b96408 JB |
1490 | drv_allow_buffered_frames(local, sta, tids, num, |
1491 | reason, more_data); | |
1492 | ||
47086fc5 | 1493 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1494 | |
b77cf4f8 JB |
1495 | if (need_null) |
1496 | ieee80211_send_null_response( | |
1497 | sdata, sta, find_highest_prio_tid(tids), | |
1498 | reason, false); | |
1499 | ||
c868cb35 | 1500 | sta_info_recalc_tim(sta); |
af818581 | 1501 | } else { |
ba8c3d6f FF |
1502 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1503 | int tid; | |
1504 | ||
af818581 | 1505 | /* |
4049e09a JB |
1506 | * We need to release a frame that is buffered somewhere in the |
1507 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1508 | * Note that the driver also has to check the number of frames |
1509 | * on the TIDs we're releasing from - if there are more than | |
1510 | * n_frames it has to set the more-data bit (if we didn't ask | |
1511 | * it to set it anyway due to other buffered frames); if there | |
1512 | * are fewer than n_frames it has to make sure to adjust that | |
1513 | * to allow the service period to end properly. | |
4049e09a JB |
1514 | */ |
1515 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1516 | n_frames, reason, more_data); |
4049e09a JB |
1517 | |
1518 | /* | |
1519 | * Note that we don't recalculate the TIM bit here as it would | |
1520 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1521 | * that the TID(s) became empty before returning here from the |
4049e09a | 1522 | * release function. |
f9f760b4 | 1523 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1524 | * became empty or we find that a txq became empty, we'll do the |
1525 | * TIM recalculation. | |
af818581 | 1526 | */ |
ba8c3d6f FF |
1527 | |
1528 | if (!sta->sta.txq[0]) | |
1529 | return; | |
1530 | ||
1531 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1532 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1533 | ||
1534 | if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue)) | |
1535 | continue; | |
1536 | ||
1537 | sta_info_recalc_tim(sta); | |
1538 | break; | |
1539 | } | |
af818581 JB |
1540 | } |
1541 | } | |
1542 | ||
47086fc5 JB |
1543 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1544 | { | |
1545 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1546 | ||
1547 | /* | |
1548 | * If all ACs are delivery-enabled then we should reply | |
1549 | * from any of them, if only some are enabled we reply | |
1550 | * only from the non-enabled ones. | |
1551 | */ | |
1552 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1553 | ignore_for_response = 0; | |
1554 | ||
1555 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1556 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1557 | } | |
1558 | ||
1559 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1560 | { | |
1561 | int n_frames = sta->sta.max_sp; | |
1562 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1563 | ||
1564 | /* | |
1565 | * If we ever grow support for TSPEC this might happen if | |
1566 | * the TSPEC update from hostapd comes in between a trigger | |
1567 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1568 | * actually getting called. | |
1569 | */ | |
1570 | if (!delivery_enabled) | |
1571 | return; | |
1572 | ||
47086fc5 JB |
1573 | switch (sta->sta.max_sp) { |
1574 | case 1: | |
1575 | n_frames = 2; | |
1576 | break; | |
1577 | case 2: | |
1578 | n_frames = 4; | |
1579 | break; | |
1580 | case 3: | |
1581 | n_frames = 6; | |
1582 | break; | |
1583 | case 0: | |
1584 | /* XXX: what is a good value? */ | |
13a8098a | 1585 | n_frames = 128; |
47086fc5 JB |
1586 | break; |
1587 | } | |
1588 | ||
1589 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1590 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1591 | } | |
1592 | ||
af818581 JB |
1593 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1594 | struct ieee80211_sta *pubsta, bool block) | |
1595 | { | |
1596 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1597 | ||
b5878a2d JB |
1598 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1599 | ||
5ac2e350 | 1600 | if (block) { |
c2c98fde | 1601 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 JB |
1602 | return; |
1603 | } | |
1604 | ||
1605 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1606 | return; | |
1607 | ||
1608 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1609 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1610 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1611 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1612 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1613 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1614 | /* must be asleep in this case */ | |
1615 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1616 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1617 | } else { | |
1618 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1619 | } | |
af818581 JB |
1620 | } |
1621 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1622 | |
e943789e | 1623 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1624 | { |
1625 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1626 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1627 | |
1628 | trace_api_eosp(local, pubsta); | |
1629 | ||
e943789e | 1630 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1631 | } |
e943789e | 1632 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1633 | |
042ec453 JB |
1634 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1635 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1636 | { |
1637 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1638 | ||
5a306f58 | 1639 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1640 | return; |
1641 | ||
1b000789 JB |
1642 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1643 | ||
948d887d JB |
1644 | if (buffered) |
1645 | set_bit(tid, &sta->driver_buffered_tids); | |
1646 | else | |
1647 | clear_bit(tid, &sta->driver_buffered_tids); | |
1648 | ||
c868cb35 | 1649 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1650 | } |
042ec453 | 1651 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1652 | |
83d5cc01 JB |
1653 | int sta_info_move_state(struct sta_info *sta, |
1654 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1655 | { |
8bf11d8d | 1656 | might_sleep(); |
d9a7ddb0 JB |
1657 | |
1658 | if (sta->sta_state == new_state) | |
1659 | return 0; | |
1660 | ||
f09603a2 JB |
1661 | /* check allowed transitions first */ |
1662 | ||
1663 | switch (new_state) { | |
1664 | case IEEE80211_STA_NONE: | |
1665 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1666 | return -EINVAL; | |
1667 | break; | |
1668 | case IEEE80211_STA_AUTH: | |
1669 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1670 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1671 | return -EINVAL; | |
1672 | break; | |
1673 | case IEEE80211_STA_ASSOC: | |
1674 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1675 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1676 | return -EINVAL; | |
1677 | break; | |
1678 | case IEEE80211_STA_AUTHORIZED: | |
1679 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1680 | return -EINVAL; | |
1681 | break; | |
1682 | default: | |
1683 | WARN(1, "invalid state %d", new_state); | |
1684 | return -EINVAL; | |
1685 | } | |
1686 | ||
bdcbd8e0 JB |
1687 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1688 | sta->sta.addr, new_state); | |
f09603a2 JB |
1689 | |
1690 | /* | |
1691 | * notify the driver before the actual changes so it can | |
1692 | * fail the transition | |
1693 | */ | |
1694 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1695 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1696 | sta->sta_state, new_state); | |
1697 | if (err) | |
1698 | return err; | |
1699 | } | |
1700 | ||
1701 | /* reflect the change in all state variables */ | |
1702 | ||
d9a7ddb0 JB |
1703 | switch (new_state) { |
1704 | case IEEE80211_STA_NONE: | |
1705 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1706 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1707 | break; |
1708 | case IEEE80211_STA_AUTH: | |
1709 | if (sta->sta_state == IEEE80211_STA_NONE) | |
1710 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1711 | else if (sta->sta_state == IEEE80211_STA_ASSOC) | |
1712 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
d9a7ddb0 JB |
1713 | break; |
1714 | case IEEE80211_STA_ASSOC: | |
29623892 | 1715 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1716 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
29623892 | 1717 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1718 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1719 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1720 | !sta->sdata->u.vlan.sta)) | |
1721 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1722 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
f09603a2 | 1723 | } |
d9a7ddb0 JB |
1724 | break; |
1725 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1726 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1727 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1728 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1729 | !sta->sdata->u.vlan.sta)) | |
1730 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1731 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
f09603a2 | 1732 | } |
d9a7ddb0 JB |
1733 | break; |
1734 | default: | |
f09603a2 | 1735 | break; |
d9a7ddb0 JB |
1736 | } |
1737 | ||
d9a7ddb0 JB |
1738 | sta->sta_state = new_state; |
1739 | ||
1740 | return 0; | |
1741 | } | |
687da132 EG |
1742 | |
1743 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1744 | { | |
1745 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1746 | u8 rx_streams; | |
1747 | ||
1748 | if (!sta->sta.ht_cap.ht_supported) | |
1749 | return 1; | |
1750 | ||
1751 | if (sta->sta.vht_cap.vht_supported) { | |
1752 | int i; | |
1753 | u16 tx_mcs_map = | |
1754 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1755 | ||
1756 | for (i = 7; i >= 0; i--) | |
1757 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1758 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1759 | return i + 1; | |
1760 | } | |
1761 | ||
1762 | if (ht_cap->mcs.rx_mask[3]) | |
1763 | rx_streams = 4; | |
1764 | else if (ht_cap->mcs.rx_mask[2]) | |
1765 | rx_streams = 3; | |
1766 | else if (ht_cap->mcs.rx_mask[1]) | |
1767 | rx_streams = 2; | |
1768 | else | |
1769 | rx_streams = 1; | |
1770 | ||
1771 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1772 | return rx_streams; | |
1773 | ||
1774 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1775 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1776 | } | |
b7ffbd7e JB |
1777 | |
1778 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) | |
1779 | { | |
1780 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1781 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 1782 | struct rate_control_ref *ref = NULL; |
b7ffbd7e | 1783 | struct timespec uptime; |
b7ffbd7e JB |
1784 | u32 thr = 0; |
1785 | int i, ac; | |
1786 | ||
9a244409 JL |
1787 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
1788 | ref = local->rate_ctrl; | |
1789 | ||
b7ffbd7e JB |
1790 | sinfo->generation = sdata->local->sta_generation; |
1791 | ||
225b8189 JB |
1792 | /* do before driver, so beacon filtering drivers have a |
1793 | * chance to e.g. just add the number of filtered beacons | |
1794 | * (or just modify the value entirely, of course) | |
1795 | */ | |
1796 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1797 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
1798 | ||
2b9a7e1b JB |
1799 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
1800 | ||
319090bf JB |
1801 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
1802 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
1803 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
1804 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
1805 | BIT(NL80211_STA_INFO_RX_DROP_MISC) | | |
1806 | BIT(NL80211_STA_INFO_BEACON_LOSS); | |
b7ffbd7e | 1807 | |
18171520 | 1808 | ktime_get_ts(&uptime); |
b7ffbd7e | 1809 | sinfo->connected_time = uptime.tv_sec - sta->last_connected; |
b7ffbd7e | 1810 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); |
2b9a7e1b | 1811 | |
319090bf JB |
1812 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
1813 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
1814 | sinfo->tx_bytes = 0; |
1815 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1816 | sinfo->tx_bytes += sta->tx_bytes[ac]; | |
319090bf | 1817 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
1818 | } |
1819 | ||
319090bf | 1820 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
1821 | sinfo->tx_packets = 0; |
1822 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1823 | sinfo->tx_packets += sta->tx_packets[ac]; | |
319090bf | 1824 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
1825 | } |
1826 | ||
319090bf JB |
1827 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
1828 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
2b9a7e1b | 1829 | sinfo->rx_bytes = sta->rx_bytes; |
319090bf | 1830 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
1831 | } |
1832 | ||
319090bf | 1833 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
2b9a7e1b | 1834 | sinfo->rx_packets = sta->rx_packets; |
319090bf | 1835 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
1836 | } |
1837 | ||
319090bf | 1838 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
2b9a7e1b | 1839 | sinfo->tx_retries = sta->tx_retry_count; |
319090bf | 1840 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
1841 | } |
1842 | ||
319090bf | 1843 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
2b9a7e1b | 1844 | sinfo->tx_failed = sta->tx_retry_failed; |
319090bf | 1845 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 1846 | } |
2b9a7e1b | 1847 | |
b7ffbd7e JB |
1848 | sinfo->rx_dropped_misc = sta->rx_dropped; |
1849 | sinfo->beacon_loss_count = sta->beacon_loss_count; | |
1850 | ||
225b8189 JB |
1851 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1852 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
1853 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
1854 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
1855 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
1856 | } | |
1857 | ||
b7ffbd7e JB |
1858 | if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || |
1859 | (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { | |
319090bf | 1860 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
b7ffbd7e | 1861 | sinfo->signal = (s8)sta->last_signal; |
319090bf | 1862 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
1863 | } |
1864 | ||
319090bf | 1865 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { |
2b9a7e1b | 1866 | sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); |
319090bf | 1867 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 1868 | } |
b7ffbd7e | 1869 | } |
2b9a7e1b JB |
1870 | |
1871 | if (sta->chains && | |
319090bf JB |
1872 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
1873 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
1874 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | | |
1875 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
b7ffbd7e JB |
1876 | |
1877 | sinfo->chains = sta->chains; | |
1878 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { | |
1879 | sinfo->chain_signal[i] = sta->chain_signal_last[i]; | |
1880 | sinfo->chain_signal_avg[i] = | |
1881 | (s8) -ewma_read(&sta->chain_signal_avg[i]); | |
1882 | } | |
1883 | } | |
1884 | ||
319090bf | 1885 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
2b9a7e1b | 1886 | sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); |
319090bf | 1887 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
1888 | } |
1889 | ||
319090bf | 1890 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 1891 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 1892 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 1893 | } |
b7ffbd7e | 1894 | |
79c892b8 JB |
1895 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
1896 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
1897 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
1898 | ||
1899 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
1900 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
1901 | tidstats->rx_msdu = sta->rx_msdu[i]; | |
1902 | } | |
1903 | ||
1904 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
1905 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
1906 | tidstats->tx_msdu = sta->tx_msdu[i]; | |
1907 | } | |
1908 | ||
1909 | if (!(tidstats->filled & | |
1910 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
1911 | local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { | |
1912 | tidstats->filled |= | |
1913 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
1914 | tidstats->tx_msdu_retries = sta->tx_msdu_retries[i]; | |
1915 | } | |
1916 | ||
1917 | if (!(tidstats->filled & | |
1918 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
1919 | local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { | |
1920 | tidstats->filled |= | |
1921 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
1922 | tidstats->tx_msdu_failed = sta->tx_msdu_failed[i]; | |
1923 | } | |
1924 | } | |
1925 | ||
b7ffbd7e JB |
1926 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
1927 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
1928 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
1929 | BIT(NL80211_STA_INFO_PLID) | | |
1930 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
1931 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
1932 | BIT(NL80211_STA_INFO_PEER_PM) | | |
1933 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e JB |
1934 | |
1935 | sinfo->llid = sta->llid; | |
1936 | sinfo->plid = sta->plid; | |
1937 | sinfo->plink_state = sta->plink_state; | |
1938 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { | |
319090bf | 1939 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
b7ffbd7e JB |
1940 | sinfo->t_offset = sta->t_offset; |
1941 | } | |
1942 | sinfo->local_pm = sta->local_pm; | |
1943 | sinfo->peer_pm = sta->peer_pm; | |
1944 | sinfo->nonpeer_pm = sta->nonpeer_pm; | |
1945 | #endif | |
1946 | } | |
1947 | ||
1948 | sinfo->bss_param.flags = 0; | |
1949 | if (sdata->vif.bss_conf.use_cts_prot) | |
1950 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
1951 | if (sdata->vif.bss_conf.use_short_preamble) | |
1952 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
1953 | if (sdata->vif.bss_conf.use_short_slot) | |
1954 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 1955 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
1956 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
1957 | ||
1958 | sinfo->sta_flags.set = 0; | |
1959 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
1960 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
1961 | BIT(NL80211_STA_FLAG_WME) | | |
1962 | BIT(NL80211_STA_FLAG_MFP) | | |
1963 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
1964 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
1965 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
1966 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
1967 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
1968 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
1969 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 1970 | if (sta->sta.wme) |
b7ffbd7e JB |
1971 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
1972 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
1973 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
1974 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
1975 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
1976 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
1977 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
1978 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
1979 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
1980 | ||
1981 | /* check if the driver has a SW RC implementation */ | |
1982 | if (ref && ref->ops->get_expected_throughput) | |
1983 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
1984 | else | |
1985 | thr = drv_get_expected_throughput(local, &sta->sta); | |
1986 | ||
1987 | if (thr != 0) { | |
319090bf | 1988 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
1989 | sinfo->expected_throughput = thr; |
1990 | } | |
1991 | } |