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