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 JB |
70 | .head_offset = offsetof(struct sta_info, hash_node), |
71 | .key_offset = offsetof(struct sta_info, sta.addr), | |
72 | .key_len = ETH_ALEN, | |
73 | .hashfn = sta_addr_hash, | |
74 | }; | |
75 | ||
4d33960b | 76 | /* Caller must hold local->sta_mtx */ |
be8755e1 MW |
77 | static int sta_info_hash_del(struct ieee80211_local *local, |
78 | struct sta_info *sta) | |
f0706e82 | 79 | { |
7bedd0cf JB |
80 | return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node, |
81 | sta_rht_params); | |
f0706e82 JB |
82 | } |
83 | ||
5108ca82 | 84 | static void __cleanup_single_sta(struct sta_info *sta) |
b22cfcfc | 85 | { |
b22cfcfc EP |
86 | int ac, i; |
87 | struct tid_ampdu_tx *tid_tx; | |
88 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
89 | struct ieee80211_local *local = sdata->local; | |
d012a605 | 90 | struct ps_data *ps; |
b22cfcfc | 91 | |
e3685e03 | 92 | if (test_sta_flag(sta, WLAN_STA_PS_STA) || |
5ac2e350 JB |
93 | test_sta_flag(sta, WLAN_STA_PS_DRIVER) || |
94 | test_sta_flag(sta, WLAN_STA_PS_DELIVER)) { | |
d012a605 MP |
95 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
96 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
97 | ps = &sdata->bss->ps; | |
3f52b7e3 MP |
98 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
99 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
100 | else |
101 | return; | |
b22cfcfc EP |
102 | |
103 | clear_sta_flag(sta, WLAN_STA_PS_STA); | |
e3685e03 | 104 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 | 105 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); |
b22cfcfc | 106 | |
d012a605 | 107 | atomic_dec(&ps->num_sta_ps); |
b22cfcfc EP |
108 | } |
109 | ||
ba8c3d6f FF |
110 | if (sta->sta.txq[0]) { |
111 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
112 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
113 | int n = skb_queue_len(&txqi->queue); | |
114 | ||
115 | ieee80211_purge_tx_queue(&local->hw, &txqi->queue); | |
116 | atomic_sub(n, &sdata->txqs_len[txqi->txq.ac]); | |
117 | } | |
118 | } | |
119 | ||
b22cfcfc EP |
120 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
121 | local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]); | |
1f98ab7f FF |
122 | ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]); |
123 | ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]); | |
b22cfcfc EP |
124 | } |
125 | ||
45b5028e TP |
126 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
127 | mesh_sta_cleanup(sta); | |
b22cfcfc | 128 | |
5ac2e350 | 129 | cancel_work_sync(&sta->drv_deliver_wk); |
b22cfcfc EP |
130 | |
131 | /* | |
132 | * Destroy aggregation state here. It would be nice to wait for the | |
133 | * driver to finish aggregation stop and then clean up, but for now | |
134 | * drivers have to handle aggregation stop being requested, followed | |
135 | * directly by station destruction. | |
136 | */ | |
5a306f58 | 137 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
661eb381 | 138 | kfree(sta->ampdu_mlme.tid_start_tx[i]); |
b22cfcfc EP |
139 | tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); |
140 | if (!tid_tx) | |
141 | continue; | |
1f98ab7f | 142 | ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending); |
b22cfcfc EP |
143 | kfree(tid_tx); |
144 | } | |
5108ca82 | 145 | } |
b22cfcfc | 146 | |
5108ca82 JB |
147 | static void cleanup_single_sta(struct sta_info *sta) |
148 | { | |
149 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
150 | struct ieee80211_local *local = sdata->local; | |
151 | ||
152 | __cleanup_single_sta(sta); | |
b22cfcfc EP |
153 | sta_info_free(local, sta); |
154 | } | |
155 | ||
d0709a65 | 156 | /* protected by RCU */ |
abe60632 JB |
157 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
158 | const u8 *addr) | |
f0706e82 | 159 | { |
abe60632 | 160 | struct ieee80211_local *local = sdata->local; |
60f4b626 JB |
161 | struct sta_info *sta; |
162 | struct rhash_head *tmp; | |
163 | const struct bucket_table *tbl; | |
164 | ||
165 | rcu_read_lock(); | |
166 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
f0706e82 | 167 | |
60f4b626 JB |
168 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
169 | if (sta->sdata == sdata) { | |
170 | rcu_read_unlock(); | |
171 | /* this is safe as the caller must already hold | |
172 | * another rcu read section or the mutex | |
173 | */ | |
174 | return sta; | |
175 | } | |
176 | } | |
177 | rcu_read_unlock(); | |
178 | return NULL; | |
43ba7e95 JB |
179 | } |
180 | ||
0e5ded5a FF |
181 | /* |
182 | * Get sta info either from the specified interface | |
183 | * or from one of its vlans | |
184 | */ | |
185 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, | |
186 | const u8 *addr) | |
187 | { | |
188 | struct ieee80211_local *local = sdata->local; | |
189 | struct sta_info *sta; | |
7bedd0cf JB |
190 | struct rhash_head *tmp; |
191 | const struct bucket_table *tbl; | |
0e5ded5a | 192 | |
7bedd0cf JB |
193 | rcu_read_lock(); |
194 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
195 | ||
196 | for_each_sta_info(local, tbl, addr, sta, tmp) { | |
197 | if (sta->sdata == sdata || | |
198 | (sta->sdata->bss && sta->sdata->bss == sdata->bss)) { | |
199 | rcu_read_unlock(); | |
200 | /* this is safe as the caller must already hold | |
201 | * another rcu read section or the mutex | |
202 | */ | |
203 | return sta; | |
204 | } | |
0e5ded5a | 205 | } |
7bedd0cf JB |
206 | rcu_read_unlock(); |
207 | return NULL; | |
0e5ded5a FF |
208 | } |
209 | ||
3b53fde8 JB |
210 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
211 | int idx) | |
ee385855 | 212 | { |
3b53fde8 | 213 | struct ieee80211_local *local = sdata->local; |
ee385855 LCC |
214 | struct sta_info *sta; |
215 | int i = 0; | |
216 | ||
d0709a65 | 217 | list_for_each_entry_rcu(sta, &local->sta_list, list) { |
3b53fde8 | 218 | if (sdata != sta->sdata) |
2a8ca29a | 219 | continue; |
ee385855 LCC |
220 | if (i < idx) { |
221 | ++i; | |
222 | continue; | |
ee385855 | 223 | } |
2a8ca29a | 224 | return sta; |
ee385855 | 225 | } |
ee385855 LCC |
226 | |
227 | return NULL; | |
228 | } | |
f0706e82 | 229 | |
93e5deb1 | 230 | /** |
d9a7ddb0 | 231 | * sta_info_free - free STA |
93e5deb1 | 232 | * |
6ef307bc | 233 | * @local: pointer to the global information |
93e5deb1 JB |
234 | * @sta: STA info to free |
235 | * | |
236 | * This function must undo everything done by sta_info_alloc() | |
d9a7ddb0 JB |
237 | * that may happen before sta_info_insert(). It may only be |
238 | * called when sta_info_insert() has not been attempted (and | |
239 | * if that fails, the station is freed anyway.) | |
93e5deb1 | 240 | */ |
d9a7ddb0 | 241 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta) |
93e5deb1 | 242 | { |
889cbb91 | 243 | if (sta->rate_ctrl) |
af65cd96 | 244 | rate_control_free_sta(sta); |
93e5deb1 | 245 | |
bdcbd8e0 | 246 | sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr); |
93e5deb1 | 247 | |
ba8c3d6f FF |
248 | if (sta->sta.txq[0]) |
249 | kfree(to_txq_info(sta->sta.txq[0])); | |
53d04525 | 250 | kfree(rcu_dereference_raw(sta->sta.rates)); |
93e5deb1 JB |
251 | kfree(sta); |
252 | } | |
253 | ||
4d33960b | 254 | /* Caller must hold local->sta_mtx */ |
d0709a65 JB |
255 | static void sta_info_hash_add(struct ieee80211_local *local, |
256 | struct sta_info *sta) | |
f0706e82 | 257 | { |
7bedd0cf JB |
258 | rhashtable_insert_fast(&local->sta_hash, &sta->hash_node, |
259 | sta_rht_params); | |
f0706e82 | 260 | } |
f0706e82 | 261 | |
5ac2e350 | 262 | static void sta_deliver_ps_frames(struct work_struct *wk) |
af818581 JB |
263 | { |
264 | struct sta_info *sta; | |
265 | ||
5ac2e350 | 266 | sta = container_of(wk, struct sta_info, drv_deliver_wk); |
af818581 JB |
267 | |
268 | if (sta->dead) | |
269 | return; | |
270 | ||
5ac2e350 JB |
271 | local_bh_disable(); |
272 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) | |
af818581 | 273 | ieee80211_sta_ps_deliver_wakeup(sta); |
5ac2e350 | 274 | else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) |
af818581 | 275 | ieee80211_sta_ps_deliver_poll_response(sta); |
5ac2e350 | 276 | else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) |
47086fc5 | 277 | ieee80211_sta_ps_deliver_uapsd(sta); |
5ac2e350 | 278 | local_bh_enable(); |
af818581 JB |
279 | } |
280 | ||
af65cd96 JB |
281 | static int sta_prepare_rate_control(struct ieee80211_local *local, |
282 | struct sta_info *sta, gfp_t gfp) | |
283 | { | |
284 | if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) | |
285 | return 0; | |
286 | ||
889cbb91 | 287 | sta->rate_ctrl = local->rate_ctrl; |
af65cd96 JB |
288 | sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, |
289 | &sta->sta, gfp); | |
889cbb91 | 290 | if (!sta->rate_ctrl_priv) |
af65cd96 | 291 | return -ENOMEM; |
af65cd96 JB |
292 | |
293 | return 0; | |
294 | } | |
295 | ||
73651ee6 | 296 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 297 | const u8 *addr, gfp_t gfp) |
f0706e82 | 298 | { |
d0709a65 | 299 | struct ieee80211_local *local = sdata->local; |
ba8c3d6f | 300 | struct ieee80211_hw *hw = &local->hw; |
f0706e82 | 301 | struct sta_info *sta; |
ebe27c91 | 302 | struct timespec uptime; |
16c5f15c | 303 | int i; |
f0706e82 | 304 | |
ba8c3d6f | 305 | sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp); |
f0706e82 | 306 | if (!sta) |
73651ee6 | 307 | return NULL; |
f0706e82 | 308 | |
07346f81 | 309 | spin_lock_init(&sta->lock); |
1d147bfa | 310 | spin_lock_init(&sta->ps_lock); |
5ac2e350 | 311 | INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames); |
67c282c0 | 312 | INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); |
a93e3644 | 313 | mutex_init(&sta->ampdu_mlme.mtx); |
87f59c70 TP |
314 | #ifdef CONFIG_MAC80211_MESH |
315 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
316 | !sdata->u.mesh.user_mpm) | |
317 | init_timer(&sta->plink_timer); | |
6c7c4cbf | 318 | sta->nonpeer_pm = NL80211_MESH_POWER_ACTIVE; |
87f59c70 | 319 | #endif |
07346f81 | 320 | |
17741cdc | 321 | memcpy(sta->sta.addr, addr, ETH_ALEN); |
d0709a65 JB |
322 | sta->local = local; |
323 | sta->sdata = sdata; | |
8bc8aecd | 324 | sta->last_rx = jiffies; |
f0706e82 | 325 | |
71ec375c JB |
326 | sta->sta_state = IEEE80211_STA_NONE; |
327 | ||
b6da911b LK |
328 | /* Mark TID as unreserved */ |
329 | sta->reserved_tid = IEEE80211_TID_UNRESERVED; | |
330 | ||
18171520 | 331 | ktime_get_ts(&uptime); |
ebe27c91 | 332 | sta->last_connected = uptime.tv_sec; |
541a45a1 | 333 | ewma_init(&sta->avg_signal, 1024, 8); |
ef0621e8 FF |
334 | for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++) |
335 | ewma_init(&sta->chain_signal_avg[i], 1024, 8); | |
541a45a1 | 336 | |
ba8c3d6f FF |
337 | if (local->ops->wake_tx_queue) { |
338 | void *txq_data; | |
339 | int size = sizeof(struct txq_info) + | |
340 | ALIGN(hw->txq_data_size, sizeof(void *)); | |
341 | ||
342 | txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp); | |
343 | if (!txq_data) | |
344 | goto free; | |
345 | ||
346 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
347 | struct txq_info *txq = txq_data + i * size; | |
348 | ||
349 | ieee80211_init_tx_queue(sdata, sta, txq, i); | |
350 | } | |
abfbc3af | 351 | } |
f0706e82 | 352 | |
ba8c3d6f FF |
353 | if (sta_prepare_rate_control(local, sta, gfp)) |
354 | goto free_txq; | |
355 | ||
5a306f58 | 356 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
a622ab72 JB |
357 | /* |
358 | * timer_to_tid must be initialized with identity mapping | |
359 | * to enable session_timer's data differentiation. See | |
360 | * sta_rx_agg_session_timer_expired for usage. | |
361 | */ | |
16c5f15c | 362 | sta->timer_to_tid[i] = i; |
16c5f15c | 363 | } |
948d887d JB |
364 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
365 | skb_queue_head_init(&sta->ps_tx_buf[i]); | |
366 | skb_queue_head_init(&sta->tx_filtered[i]); | |
367 | } | |
73651ee6 | 368 | |
5a306f58 | 369 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
4be929be | 370 | sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX); |
cccaec98 | 371 | |
af0ed69b | 372 | sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
687da132 EG |
373 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
374 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
375 | struct ieee80211_supported_band *sband = | |
ba8c3d6f | 376 | hw->wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
687da132 EG |
377 | u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> |
378 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
379 | /* | |
380 | * Assume that hostapd advertises our caps in the beacon and | |
381 | * this is the known_smps_mode for a station that just assciated | |
382 | */ | |
383 | switch (smps) { | |
384 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
385 | sta->known_smps_mode = IEEE80211_SMPS_OFF; | |
386 | break; | |
387 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
388 | sta->known_smps_mode = IEEE80211_SMPS_STATIC; | |
389 | break; | |
390 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
391 | sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC; | |
392 | break; | |
393 | default: | |
394 | WARN_ON(1); | |
395 | } | |
396 | } | |
af0ed69b | 397 | |
bdcbd8e0 | 398 | sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); |
ef04a297 | 399 | |
abfbc3af | 400 | return sta; |
ba8c3d6f FF |
401 | |
402 | free_txq: | |
403 | if (sta->sta.txq[0]) | |
404 | kfree(to_txq_info(sta->sta.txq[0])); | |
405 | free: | |
406 | kfree(sta); | |
407 | return NULL; | |
73651ee6 JB |
408 | } |
409 | ||
8c71df7a | 410 | static int sta_info_insert_check(struct sta_info *sta) |
34e89507 | 411 | { |
34e89507 | 412 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
34e89507 | 413 | |
03e4497e JB |
414 | /* |
415 | * Can't be a WARN_ON because it can be triggered through a race: | |
416 | * something inserts a STA (on one CPU) without holding the RTNL | |
417 | * and another CPU turns off the net device. | |
418 | */ | |
8c71df7a GE |
419 | if (unlikely(!ieee80211_sdata_running(sdata))) |
420 | return -ENETDOWN; | |
03e4497e | 421 | |
b203ca39 | 422 | if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) || |
8c71df7a GE |
423 | is_multicast_ether_addr(sta->sta.addr))) |
424 | return -EINVAL; | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
f09603a2 JB |
429 | static int sta_info_insert_drv_state(struct ieee80211_local *local, |
430 | struct ieee80211_sub_if_data *sdata, | |
431 | struct sta_info *sta) | |
432 | { | |
433 | enum ieee80211_sta_state state; | |
434 | int err = 0; | |
435 | ||
436 | for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) { | |
437 | err = drv_sta_state(local, sdata, sta, state, state + 1); | |
438 | if (err) | |
439 | break; | |
440 | } | |
441 | ||
442 | if (!err) { | |
a4ec45a4 JB |
443 | /* |
444 | * Drivers using legacy sta_add/sta_remove callbacks only | |
445 | * get uploaded set to true after sta_add is called. | |
446 | */ | |
447 | if (!local->ops->sta_add) | |
448 | sta->uploaded = true; | |
f09603a2 JB |
449 | return 0; |
450 | } | |
451 | ||
452 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
bdcbd8e0 JB |
453 | sdata_info(sdata, |
454 | "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n", | |
455 | sta->sta.addr, state + 1, err); | |
f09603a2 JB |
456 | err = 0; |
457 | } | |
458 | ||
459 | /* unwind on error */ | |
460 | for (; state > IEEE80211_STA_NOTEXIST; state--) | |
461 | WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1)); | |
462 | ||
463 | return err; | |
464 | } | |
465 | ||
8c71df7a GE |
466 | /* |
467 | * should be called with sta_mtx locked | |
468 | * this function replaces the mutex lock | |
469 | * with a RCU lock | |
470 | */ | |
4d33960b | 471 | static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU) |
8c71df7a GE |
472 | { |
473 | struct ieee80211_local *local = sta->local; | |
474 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
7852e361 | 475 | struct station_info sinfo; |
8c71df7a GE |
476 | int err = 0; |
477 | ||
478 | lockdep_assert_held(&local->sta_mtx); | |
34e89507 | 479 | |
7852e361 JB |
480 | /* check if STA exists already */ |
481 | if (sta_info_get_bss(sdata, sta->sta.addr)) { | |
482 | err = -EEXIST; | |
483 | goto out_err; | |
4d33960b | 484 | } |
32bfd35d | 485 | |
7852e361 JB |
486 | local->num_sta++; |
487 | local->sta_generation++; | |
488 | smp_mb(); | |
4d33960b | 489 | |
5108ca82 JB |
490 | /* simplify things and don't accept BA sessions yet */ |
491 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
492 | ||
7852e361 JB |
493 | /* make the station visible */ |
494 | sta_info_hash_add(local, sta); | |
83d5cc01 | 495 | |
2bad7748 | 496 | list_add_tail_rcu(&sta->list, &local->sta_list); |
4d33960b | 497 | |
5108ca82 JB |
498 | /* notify driver */ |
499 | err = sta_info_insert_drv_state(local, sdata, sta); | |
500 | if (err) | |
501 | goto out_remove; | |
502 | ||
7852e361 | 503 | set_sta_flag(sta, WLAN_STA_INSERTED); |
5108ca82 JB |
504 | /* accept BA sessions now */ |
505 | clear_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
4d33960b | 506 | |
21f659bf | 507 | ieee80211_recalc_min_chandef(sdata); |
7852e361 JB |
508 | ieee80211_sta_debugfs_add(sta); |
509 | rate_control_add_sta_debugfs(sta); | |
4d33960b | 510 | |
7852e361 JB |
511 | memset(&sinfo, 0, sizeof(sinfo)); |
512 | sinfo.filled = 0; | |
513 | sinfo.generation = local->sta_generation; | |
514 | cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
d0709a65 | 515 | |
bdcbd8e0 | 516 | sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr); |
f0706e82 | 517 | |
34e89507 JB |
518 | /* move reference to rcu-protected */ |
519 | rcu_read_lock(); | |
520 | mutex_unlock(&local->sta_mtx); | |
e9f207f0 | 521 | |
73651ee6 JB |
522 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
523 | mesh_accept_plinks_update(sdata); | |
524 | ||
8c71df7a | 525 | return 0; |
5108ca82 JB |
526 | out_remove: |
527 | sta_info_hash_del(local, sta); | |
528 | list_del_rcu(&sta->list); | |
529 | local->num_sta--; | |
530 | synchronize_net(); | |
531 | __cleanup_single_sta(sta); | |
4d33960b JB |
532 | out_err: |
533 | mutex_unlock(&local->sta_mtx); | |
534 | rcu_read_lock(); | |
535 | return err; | |
8c71df7a GE |
536 | } |
537 | ||
538 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU) | |
539 | { | |
540 | struct ieee80211_local *local = sta->local; | |
308f7fcf | 541 | int err; |
8c71df7a | 542 | |
4d33960b JB |
543 | might_sleep(); |
544 | ||
8c71df7a GE |
545 | err = sta_info_insert_check(sta); |
546 | if (err) { | |
547 | rcu_read_lock(); | |
548 | goto out_free; | |
549 | } | |
550 | ||
8c71df7a GE |
551 | mutex_lock(&local->sta_mtx); |
552 | ||
4d33960b | 553 | err = sta_info_insert_finish(sta); |
8c71df7a GE |
554 | if (err) |
555 | goto out_free; | |
556 | ||
73651ee6 | 557 | return 0; |
93e5deb1 | 558 | out_free: |
d9a7ddb0 | 559 | sta_info_free(local, sta); |
93e5deb1 | 560 | return err; |
f0706e82 JB |
561 | } |
562 | ||
34e89507 JB |
563 | int sta_info_insert(struct sta_info *sta) |
564 | { | |
565 | int err = sta_info_insert_rcu(sta); | |
566 | ||
567 | rcu_read_unlock(); | |
568 | ||
569 | return err; | |
570 | } | |
571 | ||
d012a605 | 572 | static inline void __bss_tim_set(u8 *tim, u16 id) |
004c872e JB |
573 | { |
574 | /* | |
575 | * This format has been mandated by the IEEE specifications, | |
576 | * so this line may not be changed to use the __set_bit() format. | |
577 | */ | |
d012a605 | 578 | tim[id / 8] |= (1 << (id % 8)); |
004c872e JB |
579 | } |
580 | ||
d012a605 | 581 | static inline void __bss_tim_clear(u8 *tim, u16 id) |
004c872e JB |
582 | { |
583 | /* | |
584 | * This format has been mandated by the IEEE specifications, | |
585 | * so this line may not be changed to use the __clear_bit() format. | |
586 | */ | |
d012a605 | 587 | tim[id / 8] &= ~(1 << (id % 8)); |
004c872e JB |
588 | } |
589 | ||
3d5839b6 IP |
590 | static inline bool __bss_tim_get(u8 *tim, u16 id) |
591 | { | |
592 | /* | |
593 | * This format has been mandated by the IEEE specifications, | |
594 | * so this line may not be changed to use the test_bit() format. | |
595 | */ | |
596 | return tim[id / 8] & (1 << (id % 8)); | |
597 | } | |
598 | ||
948d887d | 599 | static unsigned long ieee80211_tids_for_ac(int ac) |
004c872e | 600 | { |
948d887d JB |
601 | /* If we ever support TIDs > 7, this obviously needs to be adjusted */ |
602 | switch (ac) { | |
603 | case IEEE80211_AC_VO: | |
604 | return BIT(6) | BIT(7); | |
605 | case IEEE80211_AC_VI: | |
606 | return BIT(4) | BIT(5); | |
607 | case IEEE80211_AC_BE: | |
608 | return BIT(0) | BIT(3); | |
609 | case IEEE80211_AC_BK: | |
610 | return BIT(1) | BIT(2); | |
611 | default: | |
612 | WARN_ON(1); | |
613 | return 0; | |
d0709a65 | 614 | } |
004c872e JB |
615 | } |
616 | ||
9b7a86f3 | 617 | static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending) |
004c872e | 618 | { |
c868cb35 | 619 | struct ieee80211_local *local = sta->local; |
d012a605 | 620 | struct ps_data *ps; |
948d887d JB |
621 | bool indicate_tim = false; |
622 | u8 ignore_for_tim = sta->sta.uapsd_queues; | |
623 | int ac; | |
d012a605 MP |
624 | u16 id; |
625 | ||
626 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
627 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
628 | if (WARN_ON_ONCE(!sta->sdata->bss)) | |
629 | return; | |
004c872e | 630 | |
d012a605 MP |
631 | ps = &sta->sdata->bss->ps; |
632 | id = sta->sta.aid; | |
3f52b7e3 MP |
633 | #ifdef CONFIG_MAC80211_MESH |
634 | } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) { | |
635 | ps = &sta->sdata->u.mesh.ps; | |
204d1304 | 636 | /* TIM map only for 1 <= PLID <= IEEE80211_MAX_AID */ |
6f101ef0 | 637 | id = sta->plid % (IEEE80211_MAX_AID + 1); |
3f52b7e3 | 638 | #endif |
d012a605 | 639 | } else { |
c868cb35 | 640 | return; |
d012a605 | 641 | } |
3e122be0 | 642 | |
c868cb35 JB |
643 | /* No need to do anything if the driver does all */ |
644 | if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) | |
645 | return; | |
004c872e | 646 | |
c868cb35 JB |
647 | if (sta->dead) |
648 | goto done; | |
3e122be0 | 649 | |
948d887d JB |
650 | /* |
651 | * If all ACs are delivery-enabled then we should build | |
652 | * the TIM bit for all ACs anyway; if only some are then | |
653 | * we ignore those and build the TIM bit using only the | |
654 | * non-enabled ones. | |
655 | */ | |
656 | if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1) | |
657 | ignore_for_tim = 0; | |
658 | ||
9b7a86f3 JB |
659 | if (ignore_pending) |
660 | ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1; | |
661 | ||
948d887d JB |
662 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
663 | unsigned long tids; | |
3e122be0 | 664 | |
948d887d JB |
665 | if (ignore_for_tim & BIT(ac)) |
666 | continue; | |
667 | ||
668 | indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) || | |
669 | !skb_queue_empty(&sta->ps_tx_buf[ac]); | |
670 | if (indicate_tim) | |
671 | break; | |
3e122be0 | 672 | |
948d887d JB |
673 | tids = ieee80211_tids_for_ac(ac); |
674 | ||
675 | indicate_tim |= | |
676 | sta->driver_buffered_tids & tids; | |
ba8c3d6f FF |
677 | indicate_tim |= |
678 | sta->txq_buffered_tids & tids; | |
d0709a65 | 679 | } |
004c872e | 680 | |
c868cb35 | 681 | done: |
65f704a5 | 682 | spin_lock_bh(&local->tim_lock); |
004c872e | 683 | |
3d5839b6 IP |
684 | if (indicate_tim == __bss_tim_get(ps->tim, id)) |
685 | goto out_unlock; | |
686 | ||
948d887d | 687 | if (indicate_tim) |
d012a605 | 688 | __bss_tim_set(ps->tim, id); |
c868cb35 | 689 | else |
d012a605 | 690 | __bss_tim_clear(ps->tim, id); |
004c872e | 691 | |
9b7a86f3 | 692 | if (local->ops->set_tim && !WARN_ON(sta->dead)) { |
c868cb35 | 693 | local->tim_in_locked_section = true; |
948d887d | 694 | drv_set_tim(local, &sta->sta, indicate_tim); |
c868cb35 JB |
695 | local->tim_in_locked_section = false; |
696 | } | |
3e122be0 | 697 | |
3d5839b6 | 698 | out_unlock: |
65f704a5 | 699 | spin_unlock_bh(&local->tim_lock); |
004c872e JB |
700 | } |
701 | ||
9b7a86f3 JB |
702 | void sta_info_recalc_tim(struct sta_info *sta) |
703 | { | |
704 | __sta_info_recalc_tim(sta, false); | |
705 | } | |
706 | ||
cd0b8d89 | 707 | static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb) |
f0706e82 | 708 | { |
e039fa4a | 709 | struct ieee80211_tx_info *info; |
f0706e82 JB |
710 | int timeout; |
711 | ||
712 | if (!skb) | |
cd0b8d89 | 713 | return false; |
f0706e82 | 714 | |
e039fa4a | 715 | info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
716 | |
717 | /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */ | |
57c4d7b4 JB |
718 | timeout = (sta->listen_interval * |
719 | sta->sdata->vif.bss_conf.beacon_int * | |
720 | 32 / 15625) * HZ; | |
f0706e82 JB |
721 | if (timeout < STA_TX_BUFFER_EXPIRE) |
722 | timeout = STA_TX_BUFFER_EXPIRE; | |
e039fa4a | 723 | return time_after(jiffies, info->control.jiffies + timeout); |
f0706e82 JB |
724 | } |
725 | ||
726 | ||
948d887d JB |
727 | static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local, |
728 | struct sta_info *sta, int ac) | |
f0706e82 JB |
729 | { |
730 | unsigned long flags; | |
731 | struct sk_buff *skb; | |
732 | ||
60750397 JB |
733 | /* |
734 | * First check for frames that should expire on the filtered | |
735 | * queue. Frames here were rejected by the driver and are on | |
736 | * a separate queue to avoid reordering with normal PS-buffered | |
737 | * frames. They also aren't accounted for right now in the | |
738 | * total_ps_buffered counter. | |
739 | */ | |
740 | for (;;) { | |
948d887d JB |
741 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
742 | skb = skb_peek(&sta->tx_filtered[ac]); | |
60750397 | 743 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 744 | skb = __skb_dequeue(&sta->tx_filtered[ac]); |
60750397 JB |
745 | else |
746 | skb = NULL; | |
948d887d | 747 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
60750397 JB |
748 | |
749 | /* | |
750 | * Frames are queued in order, so if this one | |
751 | * hasn't expired yet we can stop testing. If | |
752 | * we actually reached the end of the queue we | |
753 | * also need to stop, of course. | |
754 | */ | |
755 | if (!skb) | |
756 | break; | |
d4fa14cd | 757 | ieee80211_free_txskb(&local->hw, skb); |
60750397 JB |
758 | } |
759 | ||
760 | /* | |
761 | * Now also check the normal PS-buffered queue, this will | |
762 | * only find something if the filtered queue was emptied | |
763 | * since the filtered frames are all before the normal PS | |
764 | * buffered frames. | |
765 | */ | |
f0706e82 | 766 | for (;;) { |
948d887d JB |
767 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
768 | skb = skb_peek(&sta->ps_tx_buf[ac]); | |
57c4d7b4 | 769 | if (sta_info_buffer_expired(sta, skb)) |
948d887d | 770 | skb = __skb_dequeue(&sta->ps_tx_buf[ac]); |
836341a7 | 771 | else |
f0706e82 | 772 | skb = NULL; |
948d887d | 773 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
f0706e82 | 774 | |
60750397 JB |
775 | /* |
776 | * frames are queued in order, so if this one | |
777 | * hasn't expired yet (or we reached the end of | |
778 | * the queue) we can stop testing | |
779 | */ | |
836341a7 | 780 | if (!skb) |
f0706e82 | 781 | break; |
836341a7 | 782 | |
836341a7 | 783 | local->total_ps_buffered--; |
bdcbd8e0 JB |
784 | ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n", |
785 | sta->sta.addr); | |
d4fa14cd | 786 | ieee80211_free_txskb(&local->hw, skb); |
f0706e82 | 787 | } |
3393a608 | 788 | |
60750397 JB |
789 | /* |
790 | * Finally, recalculate the TIM bit for this station -- it might | |
791 | * now be clear because the station was too slow to retrieve its | |
792 | * frames. | |
793 | */ | |
794 | sta_info_recalc_tim(sta); | |
795 | ||
796 | /* | |
797 | * Return whether there are any frames still buffered, this is | |
798 | * used to check whether the cleanup timer still needs to run, | |
799 | * if there are no frames we don't need to rearm the timer. | |
800 | */ | |
948d887d JB |
801 | return !(skb_queue_empty(&sta->ps_tx_buf[ac]) && |
802 | skb_queue_empty(&sta->tx_filtered[ac])); | |
803 | } | |
804 | ||
805 | static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local, | |
806 | struct sta_info *sta) | |
807 | { | |
808 | bool have_buffered = false; | |
809 | int ac; | |
810 | ||
3f52b7e3 MP |
811 | /* This is only necessary for stations on BSS/MBSS interfaces */ |
812 | if (!sta->sdata->bss && | |
813 | !ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
948d887d JB |
814 | return false; |
815 | ||
816 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
817 | have_buffered |= | |
818 | sta_info_cleanup_expire_buffered_ac(local, sta, ac); | |
819 | ||
820 | return have_buffered; | |
f0706e82 JB |
821 | } |
822 | ||
d778207b | 823 | static int __must_check __sta_info_destroy_part1(struct sta_info *sta) |
f0706e82 | 824 | { |
34e89507 JB |
825 | struct ieee80211_local *local; |
826 | struct ieee80211_sub_if_data *sdata; | |
6d10e46b | 827 | int ret; |
f0706e82 | 828 | |
34e89507 | 829 | might_sleep(); |
f0706e82 | 830 | |
34e89507 JB |
831 | if (!sta) |
832 | return -ENOENT; | |
5bb644a0 | 833 | |
34e89507 JB |
834 | local = sta->local; |
835 | sdata = sta->sdata; | |
f0706e82 | 836 | |
83d5cc01 JB |
837 | lockdep_assert_held(&local->sta_mtx); |
838 | ||
098a6070 JB |
839 | /* |
840 | * Before removing the station from the driver and | |
841 | * rate control, it might still start new aggregation | |
842 | * sessions -- block that to make sure the tear-down | |
843 | * will be sufficient. | |
844 | */ | |
c2c98fde | 845 | set_sta_flag(sta, WLAN_STA_BLOCK_BA); |
c82c4a80 | 846 | ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA); |
098a6070 | 847 | |
34e89507 | 848 | ret = sta_info_hash_del(local, sta); |
b01711be | 849 | if (WARN_ON(ret)) |
34e89507 JB |
850 | return ret; |
851 | ||
a7a6bdd0 AN |
852 | /* |
853 | * for TDLS peers, make sure to return to the base channel before | |
854 | * removal. | |
855 | */ | |
856 | if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) { | |
857 | drv_tdls_cancel_channel_switch(local, sdata, &sta->sta); | |
858 | clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL); | |
859 | } | |
860 | ||
794454ce | 861 | list_del_rcu(&sta->list); |
4d33960b | 862 | |
6a9d1b91 JB |
863 | drv_sta_pre_rcu_remove(local, sta->sdata, sta); |
864 | ||
a710c816 JB |
865 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && |
866 | rcu_access_pointer(sdata->u.vlan.sta) == sta) | |
867 | RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); | |
868 | ||
d778207b JB |
869 | return 0; |
870 | } | |
871 | ||
872 | static void __sta_info_destroy_part2(struct sta_info *sta) | |
873 | { | |
874 | struct ieee80211_local *local = sta->local; | |
875 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
6f7a8d26 | 876 | struct station_info sinfo = {}; |
d778207b JB |
877 | int ret; |
878 | ||
879 | /* | |
880 | * NOTE: This assumes at least synchronize_net() was done | |
881 | * after _part1 and before _part2! | |
882 | */ | |
883 | ||
884 | might_sleep(); | |
885 | lockdep_assert_held(&local->sta_mtx); | |
886 | ||
c8782078 | 887 | /* now keys can no longer be reached */ |
6d10e46b | 888 | ieee80211_free_sta_keys(local, sta); |
34e89507 | 889 | |
9b7a86f3 JB |
890 | /* disable TIM bit - last chance to tell driver */ |
891 | __sta_info_recalc_tim(sta, true); | |
892 | ||
34e89507 JB |
893 | sta->dead = true; |
894 | ||
34e89507 JB |
895 | local->num_sta--; |
896 | local->sta_generation++; | |
897 | ||
83d5cc01 | 898 | while (sta->sta_state > IEEE80211_STA_NONE) { |
f09603a2 JB |
899 | ret = sta_info_move_state(sta, sta->sta_state - 1); |
900 | if (ret) { | |
83d5cc01 JB |
901 | WARN_ON_ONCE(1); |
902 | break; | |
903 | } | |
904 | } | |
d9a7ddb0 | 905 | |
f09603a2 | 906 | if (sta->uploaded) { |
f09603a2 JB |
907 | ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE, |
908 | IEEE80211_STA_NOTEXIST); | |
909 | WARN_ON_ONCE(ret != 0); | |
910 | } | |
34e89507 | 911 | |
bdcbd8e0 JB |
912 | sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr); |
913 | ||
6f7a8d26 JB |
914 | sta_set_sinfo(sta, &sinfo); |
915 | cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL); | |
ec15e68b | 916 | |
34e89507 JB |
917 | rate_control_remove_sta_debugfs(sta); |
918 | ieee80211_sta_debugfs_remove(sta); | |
21f659bf | 919 | ieee80211_recalc_min_chandef(sdata); |
34e89507 | 920 | |
d34ba216 | 921 | cleanup_single_sta(sta); |
d778207b JB |
922 | } |
923 | ||
924 | int __must_check __sta_info_destroy(struct sta_info *sta) | |
925 | { | |
926 | int err = __sta_info_destroy_part1(sta); | |
927 | ||
928 | if (err) | |
929 | return err; | |
930 | ||
931 | synchronize_net(); | |
932 | ||
933 | __sta_info_destroy_part2(sta); | |
34e89507 JB |
934 | |
935 | return 0; | |
4d6141c3 JS |
936 | } |
937 | ||
34e89507 | 938 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr) |
4d6141c3 | 939 | { |
34e89507 JB |
940 | struct sta_info *sta; |
941 | int ret; | |
4d6141c3 | 942 | |
34e89507 | 943 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 944 | sta = sta_info_get(sdata, addr); |
34e89507 JB |
945 | ret = __sta_info_destroy(sta); |
946 | mutex_unlock(&sdata->local->sta_mtx); | |
4d6141c3 JS |
947 | |
948 | return ret; | |
949 | } | |
950 | ||
34e89507 JB |
951 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
952 | const u8 *addr) | |
e9f207f0 | 953 | { |
34e89507 JB |
954 | struct sta_info *sta; |
955 | int ret; | |
e9f207f0 | 956 | |
34e89507 | 957 | mutex_lock(&sdata->local->sta_mtx); |
7852e361 | 958 | sta = sta_info_get_bss(sdata, addr); |
34e89507 JB |
959 | ret = __sta_info_destroy(sta); |
960 | mutex_unlock(&sdata->local->sta_mtx); | |
d0709a65 | 961 | |
34e89507 JB |
962 | return ret; |
963 | } | |
e9f207f0 | 964 | |
34e89507 JB |
965 | static void sta_info_cleanup(unsigned long data) |
966 | { | |
967 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
968 | struct sta_info *sta; | |
3393a608 | 969 | bool timer_needed = false; |
34e89507 JB |
970 | |
971 | rcu_read_lock(); | |
972 | list_for_each_entry_rcu(sta, &local->sta_list, list) | |
3393a608 JO |
973 | if (sta_info_cleanup_expire_buffered(local, sta)) |
974 | timer_needed = true; | |
34e89507 | 975 | rcu_read_unlock(); |
e9f207f0 | 976 | |
34e89507 JB |
977 | if (local->quiescing) |
978 | return; | |
d0709a65 | 979 | |
3393a608 JO |
980 | if (!timer_needed) |
981 | return; | |
982 | ||
26d59535 JB |
983 | mod_timer(&local->sta_cleanup, |
984 | round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL)); | |
e9f207f0 | 985 | } |
e9f207f0 | 986 | |
7bedd0cf | 987 | u32 sta_addr_hash(const void *key, u32 length, u32 seed) |
f0706e82 | 988 | { |
7bedd0cf JB |
989 | return jhash(key, ETH_ALEN, seed); |
990 | } | |
991 | ||
992 | int sta_info_init(struct ieee80211_local *local) | |
993 | { | |
994 | int err; | |
995 | ||
996 | err = rhashtable_init(&local->sta_hash, &sta_rht_params); | |
997 | if (err) | |
998 | return err; | |
999 | ||
4d33960b | 1000 | spin_lock_init(&local->tim_lock); |
34e89507 | 1001 | mutex_init(&local->sta_mtx); |
f0706e82 | 1002 | INIT_LIST_HEAD(&local->sta_list); |
f0706e82 | 1003 | |
b24b8a24 PE |
1004 | setup_timer(&local->sta_cleanup, sta_info_cleanup, |
1005 | (unsigned long)local); | |
7bedd0cf | 1006 | return 0; |
f0706e82 JB |
1007 | } |
1008 | ||
1009 | void sta_info_stop(struct ieee80211_local *local) | |
1010 | { | |
a56f992c | 1011 | del_timer_sync(&local->sta_cleanup); |
7bedd0cf | 1012 | rhashtable_destroy(&local->sta_hash); |
f0706e82 JB |
1013 | } |
1014 | ||
051007d9 | 1015 | |
e716251d | 1016 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans) |
f0706e82 | 1017 | { |
b998e8bb | 1018 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1019 | struct sta_info *sta, *tmp; |
d778207b | 1020 | LIST_HEAD(free_list); |
44213b5e | 1021 | int ret = 0; |
f0706e82 | 1022 | |
d0709a65 | 1023 | might_sleep(); |
be8755e1 | 1024 | |
e716251d JB |
1025 | WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP); |
1026 | WARN_ON(vlans && !sdata->bss); | |
1027 | ||
34e89507 | 1028 | mutex_lock(&local->sta_mtx); |
d0709a65 | 1029 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { |
e716251d JB |
1030 | if (sdata == sta->sdata || |
1031 | (vlans && sdata->bss == sta->sdata->bss)) { | |
d778207b JB |
1032 | if (!WARN_ON(__sta_info_destroy_part1(sta))) |
1033 | list_add(&sta->free_list, &free_list); | |
34316837 JB |
1034 | ret++; |
1035 | } | |
be8755e1 | 1036 | } |
d778207b JB |
1037 | |
1038 | if (!list_empty(&free_list)) { | |
1039 | synchronize_net(); | |
1040 | list_for_each_entry_safe(sta, tmp, &free_list, free_list) | |
1041 | __sta_info_destroy_part2(sta); | |
1042 | } | |
34e89507 | 1043 | mutex_unlock(&local->sta_mtx); |
44213b5e | 1044 | |
051007d9 JB |
1045 | return ret; |
1046 | } | |
1047 | ||
24723d1b JB |
1048 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
1049 | unsigned long exp_time) | |
1050 | { | |
1051 | struct ieee80211_local *local = sdata->local; | |
1052 | struct sta_info *sta, *tmp; | |
24723d1b | 1053 | |
34e89507 | 1054 | mutex_lock(&local->sta_mtx); |
e46a2cf9 MSS |
1055 | |
1056 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { | |
ec2b774e ML |
1057 | if (sdata != sta->sdata) |
1058 | continue; | |
1059 | ||
24723d1b | 1060 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
eea57d42 MSS |
1061 | sta_dbg(sta->sdata, "expiring inactive STA %pM\n", |
1062 | sta->sta.addr); | |
3f52b7e3 MP |
1063 | |
1064 | if (ieee80211_vif_is_mesh(&sdata->vif) && | |
1065 | test_sta_flag(sta, WLAN_STA_PS_STA)) | |
1066 | atomic_dec(&sdata->u.mesh.ps.num_sta_ps); | |
1067 | ||
34e89507 | 1068 | WARN_ON(__sta_info_destroy(sta)); |
24723d1b | 1069 | } |
e46a2cf9 MSS |
1070 | } |
1071 | ||
34e89507 | 1072 | mutex_unlock(&local->sta_mtx); |
24723d1b | 1073 | } |
17741cdc | 1074 | |
686b9cb9 | 1075 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
7bedd0cf JB |
1076 | const u8 *addr, |
1077 | const u8 *localaddr) | |
17741cdc | 1078 | { |
7bedd0cf JB |
1079 | struct ieee80211_local *local = hw_to_local(hw); |
1080 | struct sta_info *sta; | |
1081 | struct rhash_head *tmp; | |
1082 | const struct bucket_table *tbl; | |
1083 | ||
1084 | tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash); | |
17741cdc | 1085 | |
686b9cb9 BG |
1086 | /* |
1087 | * Just return a random station if localaddr is NULL | |
1088 | * ... first in list. | |
1089 | */ | |
7bedd0cf | 1090 | for_each_sta_info(local, tbl, addr, sta, tmp) { |
686b9cb9 | 1091 | if (localaddr && |
b203ca39 | 1092 | !ether_addr_equal(sta->sdata->vif.addr, localaddr)) |
686b9cb9 | 1093 | continue; |
f7c65594 JB |
1094 | if (!sta->uploaded) |
1095 | return NULL; | |
abe60632 | 1096 | return &sta->sta; |
f7c65594 JB |
1097 | } |
1098 | ||
abe60632 | 1099 | return NULL; |
17741cdc | 1100 | } |
686b9cb9 | 1101 | EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr); |
5ed176e1 JB |
1102 | |
1103 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
1104 | const u8 *addr) | |
1105 | { | |
f7c65594 | 1106 | struct sta_info *sta; |
5ed176e1 JB |
1107 | |
1108 | if (!vif) | |
1109 | return NULL; | |
1110 | ||
f7c65594 JB |
1111 | sta = sta_info_get_bss(vif_to_sdata(vif), addr); |
1112 | if (!sta) | |
1113 | return NULL; | |
1114 | ||
1115 | if (!sta->uploaded) | |
1116 | return NULL; | |
5ed176e1 | 1117 | |
f7c65594 | 1118 | return &sta->sta; |
5ed176e1 | 1119 | } |
17741cdc | 1120 | EXPORT_SYMBOL(ieee80211_find_sta); |
af818581 | 1121 | |
e3685e03 JB |
1122 | /* powersave support code */ |
1123 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) | |
50a9432d | 1124 | { |
608383bf | 1125 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
e3685e03 JB |
1126 | struct ieee80211_local *local = sdata->local; |
1127 | struct sk_buff_head pending; | |
ba8c3d6f | 1128 | int filtered = 0, buffered = 0, ac, i; |
e3685e03 | 1129 | unsigned long flags; |
d012a605 MP |
1130 | struct ps_data *ps; |
1131 | ||
3918edb0 FF |
1132 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1133 | sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, | |
1134 | u.ap); | |
1135 | ||
1136 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
d012a605 | 1137 | ps = &sdata->bss->ps; |
3f52b7e3 MP |
1138 | else if (ieee80211_vif_is_mesh(&sdata->vif)) |
1139 | ps = &sdata->u.mesh.ps; | |
d012a605 MP |
1140 | else |
1141 | return; | |
50a9432d | 1142 | |
c2c98fde | 1143 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 1144 | |
5a306f58 | 1145 | BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1); |
948d887d | 1146 | sta->driver_buffered_tids = 0; |
ba8c3d6f | 1147 | sta->txq_buffered_tids = 0; |
af818581 | 1148 | |
d057e5a3 AN |
1149 | if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS)) |
1150 | drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta); | |
af818581 | 1151 | |
ba8c3d6f FF |
1152 | if (sta->sta.txq[0]) { |
1153 | for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) { | |
1154 | struct txq_info *txqi = to_txq_info(sta->sta.txq[i]); | |
1155 | ||
1156 | if (!skb_queue_len(&txqi->queue)) | |
1157 | continue; | |
1158 | ||
1159 | drv_wake_tx_queue(local, txqi); | |
1160 | } | |
1161 | } | |
1162 | ||
948d887d | 1163 | skb_queue_head_init(&pending); |
af818581 | 1164 | |
1d147bfa EG |
1165 | /* sync with ieee80211_tx_h_unicast_ps_buf */ |
1166 | spin_lock(&sta->ps_lock); | |
af818581 | 1167 | /* Send all buffered frames to the station */ |
948d887d JB |
1168 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
1169 | int count = skb_queue_len(&pending), tmp; | |
1170 | ||
987c285c | 1171 | spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags); |
948d887d | 1172 | skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending); |
987c285c | 1173 | spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags); |
948d887d JB |
1174 | tmp = skb_queue_len(&pending); |
1175 | filtered += tmp - count; | |
1176 | count = tmp; | |
1177 | ||
987c285c | 1178 | spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags); |
948d887d | 1179 | skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending); |
987c285c | 1180 | spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags); |
948d887d JB |
1181 | tmp = skb_queue_len(&pending); |
1182 | buffered += tmp - count; | |
1183 | } | |
1184 | ||
e3685e03 | 1185 | ieee80211_add_pending_skbs(local, &pending); |
5ac2e350 JB |
1186 | |
1187 | /* now we're no longer in the deliver code */ | |
1188 | clear_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1189 | ||
1190 | /* The station might have polled and then woken up before we responded, | |
1191 | * so clear these flags now to avoid them sticking around. | |
1192 | */ | |
1193 | clear_sta_flag(sta, WLAN_STA_PSPOLL); | |
1194 | clear_sta_flag(sta, WLAN_STA_UAPSD); | |
1d147bfa | 1195 | spin_unlock(&sta->ps_lock); |
948d887d | 1196 | |
e3685e03 JB |
1197 | atomic_dec(&ps->num_sta_ps); |
1198 | ||
687da132 | 1199 | /* This station just woke up and isn't aware of our SMPS state */ |
062f1d6d CYY |
1200 | if (!ieee80211_vif_is_mesh(&sdata->vif) && |
1201 | !ieee80211_smps_is_restrictive(sta->known_smps_mode, | |
687da132 EG |
1202 | sdata->smps_mode) && |
1203 | sta->known_smps_mode != sdata->bss->req_smps && | |
1204 | sta_info_tx_streams(sta) != 1) { | |
1205 | ht_dbg(sdata, | |
1206 | "%pM just woke up and MIMO capable - update SMPS\n", | |
1207 | sta->sta.addr); | |
1208 | ieee80211_send_smps_action(sdata, sdata->bss->req_smps, | |
1209 | sta->sta.addr, | |
1210 | sdata->vif.bss_conf.bssid); | |
1211 | } | |
1212 | ||
af818581 JB |
1213 | local->total_ps_buffered -= buffered; |
1214 | ||
c868cb35 JB |
1215 | sta_info_recalc_tim(sta); |
1216 | ||
bdcbd8e0 JB |
1217 | ps_dbg(sdata, |
1218 | "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n", | |
1219 | sta->sta.addr, sta->sta.aid, filtered, buffered); | |
af818581 JB |
1220 | } |
1221 | ||
ce662b44 JB |
1222 | static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, |
1223 | struct sta_info *sta, int tid, | |
b77cf4f8 JB |
1224 | enum ieee80211_frame_release_type reason, |
1225 | bool call_driver) | |
af818581 | 1226 | { |
af818581 | 1227 | struct ieee80211_local *local = sdata->local; |
ce662b44 | 1228 | struct ieee80211_qos_hdr *nullfunc; |
af818581 | 1229 | struct sk_buff *skb; |
ce662b44 JB |
1230 | int size = sizeof(*nullfunc); |
1231 | __le16 fc; | |
a74a8c84 | 1232 | bool qos = sta->sta.wme; |
ce662b44 | 1233 | struct ieee80211_tx_info *info; |
55de908a | 1234 | struct ieee80211_chanctx_conf *chanctx_conf; |
af818581 | 1235 | |
ce662b44 JB |
1236 | if (qos) { |
1237 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1238 | IEEE80211_STYPE_QOS_NULLFUNC | | |
1239 | IEEE80211_FCTL_FROMDS); | |
1240 | } else { | |
1241 | size -= 2; | |
1242 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
1243 | IEEE80211_STYPE_NULLFUNC | | |
1244 | IEEE80211_FCTL_FROMDS); | |
af818581 | 1245 | } |
af818581 | 1246 | |
ce662b44 JB |
1247 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); |
1248 | if (!skb) | |
1249 | return; | |
1250 | ||
1251 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1252 | ||
1253 | nullfunc = (void *) skb_put(skb, size); | |
1254 | nullfunc->frame_control = fc; | |
1255 | nullfunc->duration_id = 0; | |
1256 | memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); | |
1257 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1258 | memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); | |
864a6040 | 1259 | nullfunc->seq_ctrl = 0; |
ce662b44 | 1260 | |
59b66255 JB |
1261 | skb->priority = tid; |
1262 | skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); | |
ce662b44 | 1263 | if (qos) { |
ce662b44 JB |
1264 | nullfunc->qos_ctrl = cpu_to_le16(tid); |
1265 | ||
40b96408 | 1266 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) |
ce662b44 JB |
1267 | nullfunc->qos_ctrl |= |
1268 | cpu_to_le16(IEEE80211_QOS_CTL_EOSP); | |
1269 | } | |
1270 | ||
1271 | info = IEEE80211_SKB_CB(skb); | |
1272 | ||
1273 | /* | |
1274 | * Tell TX path to send this frame even though the | |
1275 | * STA may still remain is PS mode after this frame | |
deeaee19 JB |
1276 | * exchange. Also set EOSP to indicate this packet |
1277 | * ends the poll/service period. | |
ce662b44 | 1278 | */ |
02f2f1a9 | 1279 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER | |
deeaee19 JB |
1280 | IEEE80211_TX_STATUS_EOSP | |
1281 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
ce662b44 | 1282 | |
6b127c71 SM |
1283 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; |
1284 | ||
b77cf4f8 JB |
1285 | if (call_driver) |
1286 | drv_allow_buffered_frames(local, sta, BIT(tid), 1, | |
1287 | reason, false); | |
40b96408 | 1288 | |
89afe614 JB |
1289 | skb->dev = sdata->dev; |
1290 | ||
55de908a JB |
1291 | rcu_read_lock(); |
1292 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
1293 | if (WARN_ON(!chanctx_conf)) { | |
1294 | rcu_read_unlock(); | |
1295 | kfree_skb(skb); | |
1296 | return; | |
1297 | } | |
1298 | ||
73c4e195 | 1299 | info->band = chanctx_conf->def.chan->band; |
7c10770f | 1300 | ieee80211_xmit(sdata, sta, skb); |
55de908a | 1301 | rcu_read_unlock(); |
ce662b44 JB |
1302 | } |
1303 | ||
0a1cb809 JB |
1304 | static int find_highest_prio_tid(unsigned long tids) |
1305 | { | |
1306 | /* lower 3 TIDs aren't ordered perfectly */ | |
1307 | if (tids & 0xF8) | |
1308 | return fls(tids) - 1; | |
1309 | /* TID 0 is BE just like TID 3 */ | |
1310 | if (tids & BIT(0)) | |
1311 | return 0; | |
1312 | return fls(tids) - 1; | |
1313 | } | |
1314 | ||
47086fc5 JB |
1315 | static void |
1316 | ieee80211_sta_ps_deliver_response(struct sta_info *sta, | |
1317 | int n_frames, u8 ignored_acs, | |
1318 | enum ieee80211_frame_release_type reason) | |
af818581 JB |
1319 | { |
1320 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1321 | struct ieee80211_local *local = sdata->local; | |
948d887d JB |
1322 | bool more_data = false; |
1323 | int ac; | |
4049e09a | 1324 | unsigned long driver_release_tids = 0; |
47086fc5 | 1325 | struct sk_buff_head frames; |
af818581 | 1326 | |
deeaee19 | 1327 | /* Service or PS-Poll period starts */ |
c2c98fde | 1328 | set_sta_flag(sta, WLAN_STA_SP); |
deeaee19 | 1329 | |
47086fc5 | 1330 | __skb_queue_head_init(&frames); |
948d887d | 1331 | |
f9f760b4 | 1332 | /* Get response frame(s) and more data bit for the last one. */ |
948d887d | 1333 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
4049e09a JB |
1334 | unsigned long tids; |
1335 | ||
47086fc5 | 1336 | if (ignored_acs & BIT(ac)) |
948d887d JB |
1337 | continue; |
1338 | ||
4049e09a JB |
1339 | tids = ieee80211_tids_for_ac(ac); |
1340 | ||
f9f760b4 JB |
1341 | /* if we already have frames from software, then we can't also |
1342 | * release from hardware queues | |
1343 | */ | |
ba8c3d6f | 1344 | if (skb_queue_empty(&frames)) { |
f9f760b4 | 1345 | driver_release_tids |= sta->driver_buffered_tids & tids; |
ba8c3d6f FF |
1346 | driver_release_tids |= sta->txq_buffered_tids & tids; |
1347 | } | |
948d887d | 1348 | |
f9f760b4 JB |
1349 | if (driver_release_tids) { |
1350 | /* If the driver has data on more than one TID then | |
4049e09a | 1351 | * certainly there's more data if we release just a |
f9f760b4 JB |
1352 | * single frame now (from a single TID). This will |
1353 | * only happen for PS-Poll. | |
4049e09a | 1354 | */ |
47086fc5 JB |
1355 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && |
1356 | hweight16(driver_release_tids) > 1) { | |
4049e09a JB |
1357 | more_data = true; |
1358 | driver_release_tids = | |
0a1cb809 JB |
1359 | BIT(find_highest_prio_tid( |
1360 | driver_release_tids)); | |
4049e09a JB |
1361 | break; |
1362 | } | |
f9f760b4 JB |
1363 | } else { |
1364 | struct sk_buff *skb; | |
1365 | ||
1366 | while (n_frames > 0) { | |
1367 | skb = skb_dequeue(&sta->tx_filtered[ac]); | |
1368 | if (!skb) { | |
1369 | skb = skb_dequeue( | |
1370 | &sta->ps_tx_buf[ac]); | |
1371 | if (skb) | |
1372 | local->total_ps_buffered--; | |
1373 | } | |
1374 | if (!skb) | |
1375 | break; | |
1376 | n_frames--; | |
1377 | __skb_queue_tail(&frames, skb); | |
1378 | } | |
4049e09a | 1379 | } |
948d887d | 1380 | |
f9f760b4 JB |
1381 | /* If we have more frames buffered on this AC, then set the |
1382 | * more-data bit and abort the loop since we can't send more | |
1383 | * data from other ACs before the buffered frames from this. | |
1384 | */ | |
948d887d JB |
1385 | if (!skb_queue_empty(&sta->tx_filtered[ac]) || |
1386 | !skb_queue_empty(&sta->ps_tx_buf[ac])) { | |
1387 | more_data = true; | |
1388 | break; | |
1389 | } | |
af818581 | 1390 | } |
af818581 | 1391 | |
f9f760b4 | 1392 | if (skb_queue_empty(&frames) && !driver_release_tids) { |
ce662b44 | 1393 | int tid; |
af818581 JB |
1394 | |
1395 | /* | |
ce662b44 JB |
1396 | * For PS-Poll, this can only happen due to a race condition |
1397 | * when we set the TIM bit and the station notices it, but | |
1398 | * before it can poll for the frame we expire it. | |
1399 | * | |
1400 | * For uAPSD, this is said in the standard (11.2.1.5 h): | |
1401 | * At each unscheduled SP for a non-AP STA, the AP shall | |
1402 | * attempt to transmit at least one MSDU or MMPDU, but no | |
1403 | * more than the value specified in the Max SP Length field | |
1404 | * in the QoS Capability element from delivery-enabled ACs, | |
1405 | * that are destined for the non-AP STA. | |
1406 | * | |
1407 | * Since we have no other MSDU/MMPDU, transmit a QoS null frame. | |
af818581 | 1408 | */ |
af818581 | 1409 | |
ce662b44 JB |
1410 | /* This will evaluate to 1, 3, 5 or 7. */ |
1411 | tid = 7 - ((ffs(~ignored_acs) - 1) << 1); | |
af818581 | 1412 | |
b77cf4f8 | 1413 | ieee80211_send_null_response(sdata, sta, tid, reason, true); |
f9f760b4 | 1414 | } else if (!driver_release_tids) { |
47086fc5 JB |
1415 | struct sk_buff_head pending; |
1416 | struct sk_buff *skb; | |
40b96408 JB |
1417 | int num = 0; |
1418 | u16 tids = 0; | |
b77cf4f8 | 1419 | bool need_null = false; |
af818581 | 1420 | |
47086fc5 | 1421 | skb_queue_head_init(&pending); |
af818581 | 1422 | |
47086fc5 JB |
1423 | while ((skb = __skb_dequeue(&frames))) { |
1424 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1425 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
40b96408 JB |
1426 | u8 *qoshdr = NULL; |
1427 | ||
1428 | num++; | |
af818581 | 1429 | |
47086fc5 JB |
1430 | /* |
1431 | * Tell TX path to send this frame even though the | |
1432 | * STA may still remain is PS mode after this frame | |
1433 | * exchange. | |
1434 | */ | |
6b127c71 SM |
1435 | info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER; |
1436 | info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE; | |
47086fc5 JB |
1437 | |
1438 | /* | |
1439 | * Use MoreData flag to indicate whether there are | |
1440 | * more buffered frames for this STA | |
1441 | */ | |
24b9c373 | 1442 | if (more_data || !skb_queue_empty(&frames)) |
47086fc5 JB |
1443 | hdr->frame_control |= |
1444 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
24b9c373 JD |
1445 | else |
1446 | hdr->frame_control &= | |
1447 | cpu_to_le16(~IEEE80211_FCTL_MOREDATA); | |
47086fc5 | 1448 | |
40b96408 JB |
1449 | if (ieee80211_is_data_qos(hdr->frame_control) || |
1450 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1451 | qoshdr = ieee80211_get_qos_ctl(hdr); | |
1452 | ||
b77cf4f8 | 1453 | tids |= BIT(skb->priority); |
52a3f20c | 1454 | |
b77cf4f8 JB |
1455 | __skb_queue_tail(&pending, skb); |
1456 | ||
1457 | /* end service period after last frame or add one */ | |
1458 | if (!skb_queue_empty(&frames)) | |
1459 | continue; | |
1460 | ||
1461 | if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { | |
1462 | /* for PS-Poll, there's only one frame */ | |
52a3f20c MP |
1463 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1464 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
b77cf4f8 | 1465 | break; |
52a3f20c | 1466 | } |
deeaee19 | 1467 | |
b77cf4f8 JB |
1468 | /* For uAPSD, things are a bit more complicated. If the |
1469 | * last frame has a QoS header (i.e. is a QoS-data or | |
1470 | * QoS-nulldata frame) then just set the EOSP bit there | |
1471 | * and be done. | |
1472 | * If the frame doesn't have a QoS header (which means | |
1473 | * it should be a bufferable MMPDU) then we can't set | |
1474 | * the EOSP bit in the QoS header; add a QoS-nulldata | |
1475 | * frame to the list to send it after the MMPDU. | |
1476 | * | |
1477 | * Note that this code is only in the mac80211-release | |
1478 | * code path, we assume that the driver will not buffer | |
1479 | * anything but QoS-data frames, or if it does, will | |
1480 | * create the QoS-nulldata frame by itself if needed. | |
1481 | * | |
1482 | * Cf. 802.11-2012 10.2.1.10 (c). | |
1483 | */ | |
1484 | if (qoshdr) { | |
1485 | *qoshdr |= IEEE80211_QOS_CTL_EOSP; | |
40b96408 | 1486 | |
b77cf4f8 JB |
1487 | info->flags |= IEEE80211_TX_STATUS_EOSP | |
1488 | IEEE80211_TX_CTL_REQ_TX_STATUS; | |
1489 | } else { | |
1490 | /* The standard isn't completely clear on this | |
1491 | * as it says the more-data bit should be set | |
1492 | * if there are more BUs. The QoS-Null frame | |
1493 | * we're about to send isn't buffered yet, we | |
1494 | * only create it below, but let's pretend it | |
1495 | * was buffered just in case some clients only | |
1496 | * expect more-data=0 when eosp=1. | |
1497 | */ | |
1498 | hdr->frame_control |= | |
1499 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
1500 | need_null = true; | |
1501 | num++; | |
1502 | } | |
1503 | break; | |
47086fc5 | 1504 | } |
af818581 | 1505 | |
40b96408 JB |
1506 | drv_allow_buffered_frames(local, sta, tids, num, |
1507 | reason, more_data); | |
1508 | ||
47086fc5 | 1509 | ieee80211_add_pending_skbs(local, &pending); |
af818581 | 1510 | |
b77cf4f8 JB |
1511 | if (need_null) |
1512 | ieee80211_send_null_response( | |
1513 | sdata, sta, find_highest_prio_tid(tids), | |
1514 | reason, false); | |
1515 | ||
c868cb35 | 1516 | sta_info_recalc_tim(sta); |
af818581 | 1517 | } else { |
ba8c3d6f FF |
1518 | unsigned long tids = sta->txq_buffered_tids & driver_release_tids; |
1519 | int tid; | |
1520 | ||
af818581 | 1521 | /* |
4049e09a JB |
1522 | * We need to release a frame that is buffered somewhere in the |
1523 | * driver ... it'll have to handle that. | |
f9f760b4 JB |
1524 | * Note that the driver also has to check the number of frames |
1525 | * on the TIDs we're releasing from - if there are more than | |
1526 | * n_frames it has to set the more-data bit (if we didn't ask | |
1527 | * it to set it anyway due to other buffered frames); if there | |
1528 | * are fewer than n_frames it has to make sure to adjust that | |
1529 | * to allow the service period to end properly. | |
4049e09a JB |
1530 | */ |
1531 | drv_release_buffered_frames(local, sta, driver_release_tids, | |
47086fc5 | 1532 | n_frames, reason, more_data); |
4049e09a JB |
1533 | |
1534 | /* | |
1535 | * Note that we don't recalculate the TIM bit here as it would | |
1536 | * most likely have no effect at all unless the driver told us | |
f9f760b4 | 1537 | * that the TID(s) became empty before returning here from the |
4049e09a | 1538 | * release function. |
f9f760b4 | 1539 | * Either way, however, when the driver tells us that the TID(s) |
ba8c3d6f FF |
1540 | * became empty or we find that a txq became empty, we'll do the |
1541 | * TIM recalculation. | |
af818581 | 1542 | */ |
ba8c3d6f FF |
1543 | |
1544 | if (!sta->sta.txq[0]) | |
1545 | return; | |
1546 | ||
1547 | for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) { | |
1548 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); | |
1549 | ||
1550 | if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue)) | |
1551 | continue; | |
1552 | ||
1553 | sta_info_recalc_tim(sta); | |
1554 | break; | |
1555 | } | |
af818581 JB |
1556 | } |
1557 | } | |
1558 | ||
47086fc5 JB |
1559 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta) |
1560 | { | |
1561 | u8 ignore_for_response = sta->sta.uapsd_queues; | |
1562 | ||
1563 | /* | |
1564 | * If all ACs are delivery-enabled then we should reply | |
1565 | * from any of them, if only some are enabled we reply | |
1566 | * only from the non-enabled ones. | |
1567 | */ | |
1568 | if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1) | |
1569 | ignore_for_response = 0; | |
1570 | ||
1571 | ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response, | |
1572 | IEEE80211_FRAME_RELEASE_PSPOLL); | |
1573 | } | |
1574 | ||
1575 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta) | |
1576 | { | |
1577 | int n_frames = sta->sta.max_sp; | |
1578 | u8 delivery_enabled = sta->sta.uapsd_queues; | |
1579 | ||
1580 | /* | |
1581 | * If we ever grow support for TSPEC this might happen if | |
1582 | * the TSPEC update from hostapd comes in between a trigger | |
1583 | * frame setting WLAN_STA_UAPSD in the RX path and this | |
1584 | * actually getting called. | |
1585 | */ | |
1586 | if (!delivery_enabled) | |
1587 | return; | |
1588 | ||
47086fc5 JB |
1589 | switch (sta->sta.max_sp) { |
1590 | case 1: | |
1591 | n_frames = 2; | |
1592 | break; | |
1593 | case 2: | |
1594 | n_frames = 4; | |
1595 | break; | |
1596 | case 3: | |
1597 | n_frames = 6; | |
1598 | break; | |
1599 | case 0: | |
1600 | /* XXX: what is a good value? */ | |
13a8098a | 1601 | n_frames = 128; |
47086fc5 JB |
1602 | break; |
1603 | } | |
1604 | ||
1605 | ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled, | |
1606 | IEEE80211_FRAME_RELEASE_UAPSD); | |
1607 | } | |
1608 | ||
af818581 JB |
1609 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
1610 | struct ieee80211_sta *pubsta, bool block) | |
1611 | { | |
1612 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1613 | ||
b5878a2d JB |
1614 | trace_api_sta_block_awake(sta->local, pubsta, block); |
1615 | ||
5ac2e350 | 1616 | if (block) { |
c2c98fde | 1617 | set_sta_flag(sta, WLAN_STA_PS_DRIVER); |
5ac2e350 JB |
1618 | return; |
1619 | } | |
1620 | ||
1621 | if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER)) | |
1622 | return; | |
1623 | ||
1624 | if (!test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1625 | set_sta_flag(sta, WLAN_STA_PS_DELIVER); | |
1626 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1627 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1628 | } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) || | |
1629 | test_sta_flag(sta, WLAN_STA_UAPSD)) { | |
1630 | /* must be asleep in this case */ | |
1631 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1632 | ieee80211_queue_work(hw, &sta->drv_deliver_wk); | |
1633 | } else { | |
1634 | clear_sta_flag(sta, WLAN_STA_PS_DRIVER); | |
1635 | } | |
af818581 JB |
1636 | } |
1637 | EXPORT_SYMBOL(ieee80211_sta_block_awake); | |
dcf55fb5 | 1638 | |
e943789e | 1639 | void ieee80211_sta_eosp(struct ieee80211_sta *pubsta) |
37fbd908 JB |
1640 | { |
1641 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1642 | struct ieee80211_local *local = sta->local; | |
37fbd908 JB |
1643 | |
1644 | trace_api_eosp(local, pubsta); | |
1645 | ||
e943789e | 1646 | clear_sta_flag(sta, WLAN_STA_SP); |
37fbd908 | 1647 | } |
e943789e | 1648 | EXPORT_SYMBOL(ieee80211_sta_eosp); |
37fbd908 | 1649 | |
042ec453 JB |
1650 | void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, |
1651 | u8 tid, bool buffered) | |
dcf55fb5 FF |
1652 | { |
1653 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1654 | ||
5a306f58 | 1655 | if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) |
042ec453 JB |
1656 | return; |
1657 | ||
1b000789 JB |
1658 | trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); |
1659 | ||
948d887d JB |
1660 | if (buffered) |
1661 | set_bit(tid, &sta->driver_buffered_tids); | |
1662 | else | |
1663 | clear_bit(tid, &sta->driver_buffered_tids); | |
1664 | ||
c868cb35 | 1665 | sta_info_recalc_tim(sta); |
dcf55fb5 | 1666 | } |
042ec453 | 1667 | EXPORT_SYMBOL(ieee80211_sta_set_buffered); |
d9a7ddb0 | 1668 | |
83d5cc01 JB |
1669 | int sta_info_move_state(struct sta_info *sta, |
1670 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 1671 | { |
8bf11d8d | 1672 | might_sleep(); |
d9a7ddb0 JB |
1673 | |
1674 | if (sta->sta_state == new_state) | |
1675 | return 0; | |
1676 | ||
f09603a2 JB |
1677 | /* check allowed transitions first */ |
1678 | ||
1679 | switch (new_state) { | |
1680 | case IEEE80211_STA_NONE: | |
1681 | if (sta->sta_state != IEEE80211_STA_AUTH) | |
1682 | return -EINVAL; | |
1683 | break; | |
1684 | case IEEE80211_STA_AUTH: | |
1685 | if (sta->sta_state != IEEE80211_STA_NONE && | |
1686 | sta->sta_state != IEEE80211_STA_ASSOC) | |
1687 | return -EINVAL; | |
1688 | break; | |
1689 | case IEEE80211_STA_ASSOC: | |
1690 | if (sta->sta_state != IEEE80211_STA_AUTH && | |
1691 | sta->sta_state != IEEE80211_STA_AUTHORIZED) | |
1692 | return -EINVAL; | |
1693 | break; | |
1694 | case IEEE80211_STA_AUTHORIZED: | |
1695 | if (sta->sta_state != IEEE80211_STA_ASSOC) | |
1696 | return -EINVAL; | |
1697 | break; | |
1698 | default: | |
1699 | WARN(1, "invalid state %d", new_state); | |
1700 | return -EINVAL; | |
1701 | } | |
1702 | ||
bdcbd8e0 JB |
1703 | sta_dbg(sta->sdata, "moving STA %pM to state %d\n", |
1704 | sta->sta.addr, new_state); | |
f09603a2 JB |
1705 | |
1706 | /* | |
1707 | * notify the driver before the actual changes so it can | |
1708 | * fail the transition | |
1709 | */ | |
1710 | if (test_sta_flag(sta, WLAN_STA_INSERTED)) { | |
1711 | int err = drv_sta_state(sta->local, sta->sdata, sta, | |
1712 | sta->sta_state, new_state); | |
1713 | if (err) | |
1714 | return err; | |
1715 | } | |
1716 | ||
1717 | /* reflect the change in all state variables */ | |
1718 | ||
d9a7ddb0 JB |
1719 | switch (new_state) { |
1720 | case IEEE80211_STA_NONE: | |
1721 | if (sta->sta_state == IEEE80211_STA_AUTH) | |
1722 | clear_bit(WLAN_STA_AUTH, &sta->_flags); | |
d9a7ddb0 JB |
1723 | break; |
1724 | case IEEE80211_STA_AUTH: | |
1725 | if (sta->sta_state == IEEE80211_STA_NONE) | |
1726 | set_bit(WLAN_STA_AUTH, &sta->_flags); | |
1727 | else if (sta->sta_state == IEEE80211_STA_ASSOC) | |
1728 | clear_bit(WLAN_STA_ASSOC, &sta->_flags); | |
d9a7ddb0 JB |
1729 | break; |
1730 | case IEEE80211_STA_ASSOC: | |
29623892 | 1731 | if (sta->sta_state == IEEE80211_STA_AUTH) { |
d9a7ddb0 | 1732 | set_bit(WLAN_STA_ASSOC, &sta->_flags); |
29623892 | 1733 | } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) { |
7e3ed02c FF |
1734 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1735 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1736 | !sta->sdata->u.vlan.sta)) | |
1737 | atomic_dec(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1738 | clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
f09603a2 | 1739 | } |
d9a7ddb0 JB |
1740 | break; |
1741 | case IEEE80211_STA_AUTHORIZED: | |
29623892 | 1742 | if (sta->sta_state == IEEE80211_STA_ASSOC) { |
7e3ed02c FF |
1743 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
1744 | (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
1745 | !sta->sdata->u.vlan.sta)) | |
1746 | atomic_inc(&sta->sdata->bss->num_mcast_sta); | |
d9a7ddb0 | 1747 | set_bit(WLAN_STA_AUTHORIZED, &sta->_flags); |
f09603a2 | 1748 | } |
d9a7ddb0 JB |
1749 | break; |
1750 | default: | |
f09603a2 | 1751 | break; |
d9a7ddb0 JB |
1752 | } |
1753 | ||
d9a7ddb0 JB |
1754 | sta->sta_state = new_state; |
1755 | ||
1756 | return 0; | |
1757 | } | |
687da132 EG |
1758 | |
1759 | u8 sta_info_tx_streams(struct sta_info *sta) | |
1760 | { | |
1761 | struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap; | |
1762 | u8 rx_streams; | |
1763 | ||
1764 | if (!sta->sta.ht_cap.ht_supported) | |
1765 | return 1; | |
1766 | ||
1767 | if (sta->sta.vht_cap.vht_supported) { | |
1768 | int i; | |
1769 | u16 tx_mcs_map = | |
1770 | le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map); | |
1771 | ||
1772 | for (i = 7; i >= 0; i--) | |
1773 | if ((tx_mcs_map & (0x3 << (i * 2))) != | |
1774 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
1775 | return i + 1; | |
1776 | } | |
1777 | ||
1778 | if (ht_cap->mcs.rx_mask[3]) | |
1779 | rx_streams = 4; | |
1780 | else if (ht_cap->mcs.rx_mask[2]) | |
1781 | rx_streams = 3; | |
1782 | else if (ht_cap->mcs.rx_mask[1]) | |
1783 | rx_streams = 2; | |
1784 | else | |
1785 | rx_streams = 1; | |
1786 | ||
1787 | if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF)) | |
1788 | return rx_streams; | |
1789 | ||
1790 | return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
1791 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
1792 | } | |
b7ffbd7e JB |
1793 | |
1794 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) | |
1795 | { | |
1796 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
1797 | struct ieee80211_local *local = sdata->local; | |
9a244409 | 1798 | struct rate_control_ref *ref = NULL; |
b7ffbd7e | 1799 | struct timespec uptime; |
b7ffbd7e JB |
1800 | u32 thr = 0; |
1801 | int i, ac; | |
1802 | ||
9a244409 JL |
1803 | if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
1804 | ref = local->rate_ctrl; | |
1805 | ||
b7ffbd7e JB |
1806 | sinfo->generation = sdata->local->sta_generation; |
1807 | ||
225b8189 JB |
1808 | /* do before driver, so beacon filtering drivers have a |
1809 | * chance to e.g. just add the number of filtered beacons | |
1810 | * (or just modify the value entirely, of course) | |
1811 | */ | |
1812 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1813 | sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal; | |
1814 | ||
2b9a7e1b JB |
1815 | drv_sta_statistics(local, sdata, &sta->sta, sinfo); |
1816 | ||
319090bf JB |
1817 | sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) | |
1818 | BIT(NL80211_STA_INFO_STA_FLAGS) | | |
1819 | BIT(NL80211_STA_INFO_BSS_PARAM) | | |
1820 | BIT(NL80211_STA_INFO_CONNECTED_TIME) | | |
1821 | BIT(NL80211_STA_INFO_RX_DROP_MISC) | | |
1822 | BIT(NL80211_STA_INFO_BEACON_LOSS); | |
b7ffbd7e | 1823 | |
18171520 | 1824 | ktime_get_ts(&uptime); |
b7ffbd7e | 1825 | sinfo->connected_time = uptime.tv_sec - sta->last_connected; |
b7ffbd7e | 1826 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); |
2b9a7e1b | 1827 | |
319090bf JB |
1828 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) | |
1829 | BIT(NL80211_STA_INFO_TX_BYTES)))) { | |
2b9a7e1b JB |
1830 | sinfo->tx_bytes = 0; |
1831 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1832 | sinfo->tx_bytes += sta->tx_bytes[ac]; | |
319090bf | 1833 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64); |
2b9a7e1b JB |
1834 | } |
1835 | ||
319090bf | 1836 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) { |
2b9a7e1b JB |
1837 | sinfo->tx_packets = 0; |
1838 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
1839 | sinfo->tx_packets += sta->tx_packets[ac]; | |
319090bf | 1840 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS); |
2b9a7e1b JB |
1841 | } |
1842 | ||
319090bf JB |
1843 | if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) | |
1844 | BIT(NL80211_STA_INFO_RX_BYTES)))) { | |
2b9a7e1b | 1845 | sinfo->rx_bytes = sta->rx_bytes; |
319090bf | 1846 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64); |
2b9a7e1b JB |
1847 | } |
1848 | ||
319090bf | 1849 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) { |
2b9a7e1b | 1850 | sinfo->rx_packets = sta->rx_packets; |
319090bf | 1851 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS); |
2b9a7e1b JB |
1852 | } |
1853 | ||
319090bf | 1854 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) { |
2b9a7e1b | 1855 | sinfo->tx_retries = sta->tx_retry_count; |
319090bf | 1856 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES); |
2b9a7e1b JB |
1857 | } |
1858 | ||
319090bf | 1859 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) { |
2b9a7e1b | 1860 | sinfo->tx_failed = sta->tx_retry_failed; |
319090bf | 1861 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED); |
b7ffbd7e | 1862 | } |
2b9a7e1b | 1863 | |
b7ffbd7e JB |
1864 | sinfo->rx_dropped_misc = sta->rx_dropped; |
1865 | sinfo->beacon_loss_count = sta->beacon_loss_count; | |
1866 | ||
225b8189 JB |
1867 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1868 | !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) { | |
1869 | sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) | | |
1870 | BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); | |
1871 | sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif); | |
1872 | } | |
1873 | ||
b7ffbd7e JB |
1874 | if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || |
1875 | (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { | |
319090bf | 1876 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) { |
b7ffbd7e | 1877 | sinfo->signal = (s8)sta->last_signal; |
319090bf | 1878 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); |
2b9a7e1b JB |
1879 | } |
1880 | ||
319090bf | 1881 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) { |
2b9a7e1b | 1882 | sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); |
319090bf | 1883 | sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); |
2b9a7e1b | 1884 | } |
b7ffbd7e | 1885 | } |
2b9a7e1b JB |
1886 | |
1887 | if (sta->chains && | |
319090bf JB |
1888 | !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | |
1889 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) { | |
1890 | sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL) | | |
1891 | BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG); | |
b7ffbd7e JB |
1892 | |
1893 | sinfo->chains = sta->chains; | |
1894 | for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) { | |
1895 | sinfo->chain_signal[i] = sta->chain_signal_last[i]; | |
1896 | sinfo->chain_signal_avg[i] = | |
1897 | (s8) -ewma_read(&sta->chain_signal_avg[i]); | |
1898 | } | |
1899 | } | |
1900 | ||
319090bf | 1901 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) { |
2b9a7e1b | 1902 | sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); |
319090bf | 1903 | sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); |
2b9a7e1b JB |
1904 | } |
1905 | ||
319090bf | 1906 | if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { |
2b9a7e1b | 1907 | sta_set_rate_info_rx(sta, &sinfo->rxrate); |
319090bf | 1908 | sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); |
2b9a7e1b | 1909 | } |
b7ffbd7e | 1910 | |
79c892b8 JB |
1911 | sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); |
1912 | for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) { | |
1913 | struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i]; | |
1914 | ||
1915 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) { | |
1916 | tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU); | |
1917 | tidstats->rx_msdu = sta->rx_msdu[i]; | |
1918 | } | |
1919 | ||
1920 | if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) { | |
1921 | tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU); | |
1922 | tidstats->tx_msdu = sta->tx_msdu[i]; | |
1923 | } | |
1924 | ||
1925 | if (!(tidstats->filled & | |
1926 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) && | |
1927 | local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { | |
1928 | tidstats->filled |= | |
1929 | BIT(NL80211_TID_STATS_TX_MSDU_RETRIES); | |
1930 | tidstats->tx_msdu_retries = sta->tx_msdu_retries[i]; | |
1931 | } | |
1932 | ||
1933 | if (!(tidstats->filled & | |
1934 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) && | |
1935 | local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { | |
1936 | tidstats->filled |= | |
1937 | BIT(NL80211_TID_STATS_TX_MSDU_FAILED); | |
1938 | tidstats->tx_msdu_failed = sta->tx_msdu_failed[i]; | |
1939 | } | |
1940 | } | |
1941 | ||
b7ffbd7e JB |
1942 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
1943 | #ifdef CONFIG_MAC80211_MESH | |
319090bf JB |
1944 | sinfo->filled |= BIT(NL80211_STA_INFO_LLID) | |
1945 | BIT(NL80211_STA_INFO_PLID) | | |
1946 | BIT(NL80211_STA_INFO_PLINK_STATE) | | |
1947 | BIT(NL80211_STA_INFO_LOCAL_PM) | | |
1948 | BIT(NL80211_STA_INFO_PEER_PM) | | |
1949 | BIT(NL80211_STA_INFO_NONPEER_PM); | |
b7ffbd7e JB |
1950 | |
1951 | sinfo->llid = sta->llid; | |
1952 | sinfo->plid = sta->plid; | |
1953 | sinfo->plink_state = sta->plink_state; | |
1954 | if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) { | |
319090bf | 1955 | sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET); |
b7ffbd7e JB |
1956 | sinfo->t_offset = sta->t_offset; |
1957 | } | |
1958 | sinfo->local_pm = sta->local_pm; | |
1959 | sinfo->peer_pm = sta->peer_pm; | |
1960 | sinfo->nonpeer_pm = sta->nonpeer_pm; | |
1961 | #endif | |
1962 | } | |
1963 | ||
1964 | sinfo->bss_param.flags = 0; | |
1965 | if (sdata->vif.bss_conf.use_cts_prot) | |
1966 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; | |
1967 | if (sdata->vif.bss_conf.use_short_preamble) | |
1968 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; | |
1969 | if (sdata->vif.bss_conf.use_short_slot) | |
1970 | sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; | |
785e21a8 | 1971 | sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period; |
b7ffbd7e JB |
1972 | sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; |
1973 | ||
1974 | sinfo->sta_flags.set = 0; | |
1975 | sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | | |
1976 | BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | | |
1977 | BIT(NL80211_STA_FLAG_WME) | | |
1978 | BIT(NL80211_STA_FLAG_MFP) | | |
1979 | BIT(NL80211_STA_FLAG_AUTHENTICATED) | | |
1980 | BIT(NL80211_STA_FLAG_ASSOCIATED) | | |
1981 | BIT(NL80211_STA_FLAG_TDLS_PEER); | |
1982 | if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
1983 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); | |
1984 | if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) | |
1985 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); | |
a74a8c84 | 1986 | if (sta->sta.wme) |
b7ffbd7e JB |
1987 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); |
1988 | if (test_sta_flag(sta, WLAN_STA_MFP)) | |
1989 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); | |
1990 | if (test_sta_flag(sta, WLAN_STA_AUTH)) | |
1991 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); | |
1992 | if (test_sta_flag(sta, WLAN_STA_ASSOC)) | |
1993 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED); | |
1994 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
1995 | sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); | |
1996 | ||
1997 | /* check if the driver has a SW RC implementation */ | |
1998 | if (ref && ref->ops->get_expected_throughput) | |
1999 | thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv); | |
2000 | else | |
2001 | thr = drv_get_expected_throughput(local, &sta->sta); | |
2002 | ||
2003 | if (thr != 0) { | |
319090bf | 2004 | sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT); |
b7ffbd7e JB |
2005 | sinfo->expected_throughput = thr; |
2006 | } | |
2007 | } |