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mac80211: Fix typo in mac80211.h
[mirror_ubuntu-bionic-kernel.git] / net / mac80211 / mlme.c
CommitLineData
f0706e82
JB		 1/*
2 * BSS client mode implementation
5394af4d 3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
f0706e82
JB		 4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
5b323edb 14#include <linux/delay.h>
f0706e82
JB		 15#include <linux/if_ether.h>
16#include <linux/skbuff.h>
f0706e82 17#include <linux/if_arp.h>
f0706e82 18#include <linux/etherdevice.h>
d9b93842 19#include <linux/moduleparam.h>
d0709a65 20#include <linux/rtnetlink.h>
e8db0be1 21#include <linux/pm_qos.h>
d91f36db 22#include <linux/crc32.h>
5a0e3ad6 23#include <linux/slab.h>
bc3b2d7f 24#include <linux/export.h>
f0706e82 25#include <net/mac80211.h>
472dbc45 26#include <asm/unaligned.h>
60f8b39c 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7
JB		 30#include "rate.h"
31#include "led.h"
f0706e82 32
66e67e41
JB		 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
34#define IEEE80211_AUTH_MAX_TRIES 3
35#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
36#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
37#define IEEE80211_ASSOC_MAX_TRIES 3
38
180205bd
BG		 39static int max_nullfunc_tries = 2;
40module_param(max_nullfunc_tries, int, 0644);
41MODULE_PARM_DESC(max_nullfunc_tries,
42 "Maximum nullfunc tx tries before disconnecting (reason 4).");
43
44static int max_probe_tries = 5;
45module_param(max_probe_tries, int, 0644);
46MODULE_PARM_DESC(max_probe_tries,
47 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 48
49/*
7ccc8bd7
FF		 50 * Beacon loss timeout is calculated as N frames times the
51 * advertised beacon interval. This may need to be somewhat
52 * higher than what hardware might detect to account for
53 * delays in the host processing frames. But since we also
54 * probe on beacon miss before declaring the connection lost
55 * default to what we want.
b291ba11 56 */
7ccc8bd7
FF		 57#define IEEE80211_BEACON_LOSS_COUNT 7
58
b291ba11
JB		 59/*
60 * Time the connection can be idle before we probe
61 * it to see if we can still talk to the AP.
62 */
d1c5091f 63#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 64/*
65 * Time we wait for a probe response after sending
66 * a probe request because of beacon loss or for
67 * checking the connection still works.
68 */
180205bd
BG		 69static int probe_wait_ms = 500;
70module_param(probe_wait_ms, int, 0644);
71MODULE_PARM_DESC(probe_wait_ms,
72 "Maximum time(ms) to wait for probe response"
73 " before disconnecting (reason 4).");
f0706e82 74
17e4ec14
JM		 75/*
76 * Weight given to the latest Beacon frame when calculating average signal
77 * strength for Beacon frames received in the current BSS. This must be
78 * between 1 and 15.
79 */
80#define IEEE80211_SIGNAL_AVE_WEIGHT 3
81
391a200a
JM		 82/*
83 * How many Beacon frames need to have been used in average signal strength
84 * before starting to indicate signal change events.
85 */
86#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
87
5bb644a0
JB		 88#define TMR_RUNNING_TIMER 0
89#define TMR_RUNNING_CHANSW 1
90
77fdaa12
JB		 91/*
92 * All cfg80211 functions have to be called outside a locked
93 * section so that they can acquire a lock themselves... This
94 * is much simpler than queuing up things in cfg80211, but we
95 * do need some indirection for that here.
96 */
97enum rx_mgmt_action {
98 /* no action required */
99 RX_MGMT_NONE,
100
77fdaa12
JB		 101 /* caller must call cfg80211_send_deauth() */
102 RX_MGMT_CFG80211_DEAUTH,
103
104 /* caller must call cfg80211_send_disassoc() */
105 RX_MGMT_CFG80211_DISASSOC,
66e67e41
JB		 106
107 /* caller must call cfg80211_send_rx_auth() */
108 RX_MGMT_CFG80211_RX_AUTH,
109
110 /* caller must call cfg80211_send_rx_assoc() */
111 RX_MGMT_CFG80211_RX_ASSOC,
112
113 /* caller must call cfg80211_send_assoc_timeout() */
114 RX_MGMT_CFG80211_ASSOC_TIMEOUT,
77fdaa12
JB		 115};
116
5484e237 117/* utils */
77fdaa12
JB		 118static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
119{
46a5ebaf 120 lockdep_assert_held(&ifmgd->mtx);
77fdaa12
JB		 121}
122
ca386f31
JB		 123/*
124 * We can have multiple work items (and connection probing)
125 * scheduling this timer, but we need to take care to only
126 * reschedule it when it should fire _earlier_ than it was
127 * asked for before, or if it's not pending right now. This
128 * function ensures that. Note that it then is required to
129 * run this function for all timeouts after the first one
130 * has happened -- the work that runs from this timer will
131 * do that.
132 */
66e67e41 133static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout)
ca386f31
JB		 134{
135 ASSERT_MGD_MTX(ifmgd);
136
137 if (!timer_pending(&ifmgd->timer) ||
138 time_before(timeout, ifmgd->timer.expires))
139 mod_timer(&ifmgd->timer, timeout);
140}
141
d3a910a8 142void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 143{
c1288b12 144 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 145 return;
146
7eeff74c
JB		 147 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
148 return;
149
b291ba11 150 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 151 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 152}
153
be099e82
LR		 154void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
155{
0c699c3a
LR		 156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
157
8628172f
SG		 158 if (unlikely(!sdata->u.mgd.associated))
159 return;
160
be099e82
LR		 161 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
162 return;
163
164 mod_timer(&sdata->u.mgd.conn_mon_timer,
165 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
0c699c3a
LR		 166
167 ifmgd->probe_send_count = 0;
be099e82
LR		 168}
169
5484e237 170static int ecw2cw(int ecw)
60f8b39c 171{
5484e237 172 return (1 << ecw) - 1;
60f8b39c
JB		 173}
174
24398e39
JB		 175static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
176 struct ieee80211_ht_operation *ht_oper,
177 const u8 *bssid, bool reconfig)
d5522e03
JB		 178{
179 struct ieee80211_local *local = sdata->local;
180 struct ieee80211_supported_band *sband;
55de908a
JB		 181 struct ieee80211_chanctx_conf *chanctx_conf;
182 struct ieee80211_channel *chan;
d5522e03
JB		 183 struct sta_info *sta;
184 u32 changed = 0;
9ed6bcce 185 u16 ht_opmode;
64f68e5d 186 bool disable_40 = false;
d5522e03 187
55de908a
JB		 188 rcu_read_lock();
189 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
190 if (WARN_ON(!chanctx_conf)) {
191 rcu_read_unlock();
192 return 0;
193 }
4bf88530 194 chan = chanctx_conf->def.chan;
55de908a
JB		 195 rcu_read_unlock();
196 sband = local->hw.wiphy->bands[chan->band];
d5522e03 197
4bf88530
JB		 198 switch (sdata->vif.bss_conf.chandef.width) {
199 case NL80211_CHAN_WIDTH_40:
200 if (sdata->vif.bss_conf.chandef.chan->center_freq >
201 sdata->vif.bss_conf.chandef.center_freq1 &&
202 chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
64f68e5d 203 disable_40 = true;
4bf88530
JB		 204 if (sdata->vif.bss_conf.chandef.chan->center_freq <
205 sdata->vif.bss_conf.chandef.center_freq1 &&
206 chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
64f68e5d
JB		 207 disable_40 = true;
208 break;
209 default:
210 break;
211 }
d5522e03 212
24398e39
JB		 213 /* This can change during the lifetime of the BSS */
214 if (!(ht_oper->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
64f68e5d
JB		 215 disable_40 = true;
216
217 mutex_lock(&local->sta_mtx);
218 sta = sta_info_get(sdata, bssid);
d5522e03 219
64f68e5d
JB		 220 WARN_ON_ONCE(!sta);
221
222 if (sta && !sta->supports_40mhz)
223 disable_40 = true;
224
225 if (sta && (!reconfig ||
91a0099c 226 (disable_40 != !(sta->sta.ht_cap.cap &
64f68e5d 227 IEEE80211_HT_CAP_SUP_WIDTH_20_40)))) {
d5522e03 228
64f68e5d
JB		 229 if (disable_40)
230 sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
231 else
232 sta->sta.ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
7cc44ed4 233
64f68e5d 234 rate_control_rate_update(local, sband, sta,
8f727ef3 235 IEEE80211_RC_BW_CHANGED);
0aaffa9b 236 }
64f68e5d 237 mutex_unlock(&local->sta_mtx);
d5522e03 238
074d46d1 239 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
d5522e03
JB		 240
241 /* if bss configuration changed store the new one */
24398e39 242 if (!reconfig || (sdata->vif.bss_conf.ht_operation_mode != ht_opmode)) {
d5522e03 243 changed |= BSS_CHANGED_HT;
9ed6bcce 244 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
d5522e03
JB		 245 }
246
247 return changed;
248}
249
9c6bd790
JB		 250/* frame sending functions */
251
66e67e41
JB		 252static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len,
253 struct ieee80211_supported_band *sband,
254 u32 *rates)
255{
256 int i, j, count;
257 *rates = 0;
258 count = 0;
259 for (i = 0; i < supp_rates_len; i++) {
260 int rate = (supp_rates[i] & 0x7F) * 5;
261
262 for (j = 0; j < sband->n_bitrates; j++)
263 if (sband->bitrates[j].bitrate == rate) {
264 *rates |= BIT(j);
265 count++;
266 break;
267 }
268 }
269
270 return count;
271}
272
273static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 274 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 275 struct ieee80211_supported_band *sband,
276 struct ieee80211_channel *channel,
277 enum ieee80211_smps_mode smps)
278{
66e67e41
JB		 279 u8 *pos;
280 u32 flags = channel->flags;
281 u16 cap;
282 struct ieee80211_sta_ht_cap ht_cap;
283
284 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
285
66e67e41
JB		 286 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
287 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
288
66e67e41
JB		 289 /* determine capability flags */
290 cap = ht_cap.cap;
291
9dde6423 292 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 293 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
294 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
295 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
296 cap &= ~IEEE80211_HT_CAP_SGI_40;
297 }
298 break;
299 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
300 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
301 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
302 cap &= ~IEEE80211_HT_CAP_SGI_40;
303 }
304 break;
305 }
306
24398e39
JB		 307 /*
308 * If 40 MHz was disabled associate as though we weren't
309 * capable of 40 MHz -- some broken APs will never fall
310 * back to trying to transmit in 20 MHz.
311 */
312 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
313 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
314 cap &= ~IEEE80211_HT_CAP_SGI_40;
315 }
316
66e67e41
JB		 317 /* set SM PS mode properly */
318 cap &= ~IEEE80211_HT_CAP_SM_PS;
319 switch (smps) {
320 case IEEE80211_SMPS_AUTOMATIC:
321 case IEEE80211_SMPS_NUM_MODES:
322 WARN_ON(1);
323 case IEEE80211_SMPS_OFF:
324 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
325 IEEE80211_HT_CAP_SM_PS_SHIFT;
326 break;
327 case IEEE80211_SMPS_STATIC:
328 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
329 IEEE80211_HT_CAP_SM_PS_SHIFT;
330 break;
331 case IEEE80211_SMPS_DYNAMIC:
332 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
333 IEEE80211_HT_CAP_SM_PS_SHIFT;
334 break;
335 }
336
337 /* reserve and fill IE */
338 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
339 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
340}
341
d545daba
MP		 342static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
343 struct sk_buff *skb,
344 struct ieee80211_supported_band *sband)
345{
346 u8 *pos;
347 u32 cap;
348 struct ieee80211_sta_vht_cap vht_cap;
349
350 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
351
352 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
353
354 /* determine capability flags */
355 cap = vht_cap.cap;
356
f2d9d270
JB		 357 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
358 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
359 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
360 }
361
362 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
363 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
364 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
365 }
366
d545daba 367 /* reserve and fill IE */
d4950281 368 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 369 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
370}
371
66e67e41
JB		 372static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
373{
374 struct ieee80211_local *local = sdata->local;
375 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
376 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
377 struct sk_buff *skb;
378 struct ieee80211_mgmt *mgmt;
379 u8 *pos, qos_info;
380 size_t offset = 0, noffset;
381 int i, count, rates_len, supp_rates_len;
382 u16 capab;
383 struct ieee80211_supported_band *sband;
55de908a
JB		 384 struct ieee80211_chanctx_conf *chanctx_conf;
385 struct ieee80211_channel *chan;
66e67e41 386 u32 rates = 0;
66e67e41
JB		 387
388 lockdep_assert_held(&ifmgd->mtx);
389
55de908a
JB		 390 rcu_read_lock();
391 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
392 if (WARN_ON(!chanctx_conf)) {
393 rcu_read_unlock();
394 return;
395 }
4bf88530 396 chan = chanctx_conf->def.chan;
55de908a
JB		 397 rcu_read_unlock();
398 sband = local->hw.wiphy->bands[chan->band];
66e67e41
JB		 399
400 if (assoc_data->supp_rates_len) {
401 /*
402 * Get all rates supported by the device and the AP as
403 * some APs don't like getting a superset of their rates
404 * in the association request (e.g. D-Link DAP 1353 in
405 * b-only mode)...
406 */
407 rates_len = ieee80211_compatible_rates(assoc_data->supp_rates,
408 assoc_data->supp_rates_len,
409 sband, &rates);
410 } else {
411 /*
412 * In case AP not provide any supported rates information
413 * before association, we send information element(s) with
414 * all rates that we support.
415 */
416 rates = ~0;
417 rates_len = sband->n_bitrates;
418 }
419
420 skb = alloc_skb(local->hw.extra_tx_headroom +
421 sizeof(*mgmt) + /* bit too much but doesn't matter */
422 2 + assoc_data->ssid_len + /* SSID */
423 4 + rates_len + /* (extended) rates */
424 4 + /* power capability */
425 2 + 2 * sband->n_channels + /* supported channels */
426 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 427 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 428 assoc_data->ie_len + /* extra IEs */
429 9, /* WMM */
430 GFP_KERNEL);
431 if (!skb)
432 return;
433
434 skb_reserve(skb, local->hw.extra_tx_headroom);
435
436 capab = WLAN_CAPABILITY_ESS;
437
438 if (sband->band == IEEE80211_BAND_2GHZ) {
439 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
440 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
441 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
442 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
443 }
444
445 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
446 capab |= WLAN_CAPABILITY_PRIVACY;
447
448 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
449 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
450 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
451
452 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
453 memset(mgmt, 0, 24);
454 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
455 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
456 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
457
458 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
459 skb_put(skb, 10);
460 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
461 IEEE80211_STYPE_REASSOC_REQ);
462 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
463 mgmt->u.reassoc_req.listen_interval =
464 cpu_to_le16(local->hw.conf.listen_interval);
465 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
466 ETH_ALEN);
467 } else {
468 skb_put(skb, 4);
469 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
470 IEEE80211_STYPE_ASSOC_REQ);
471 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
472 mgmt->u.assoc_req.listen_interval =
473 cpu_to_le16(local->hw.conf.listen_interval);
474 }
475
476 /* SSID */
477 pos = skb_put(skb, 2 + assoc_data->ssid_len);
478 *pos++ = WLAN_EID_SSID;
479 *pos++ = assoc_data->ssid_len;
480 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
481
482 /* add all rates which were marked to be used above */
483 supp_rates_len = rates_len;
484 if (supp_rates_len > 8)
485 supp_rates_len = 8;
486
487 pos = skb_put(skb, supp_rates_len + 2);
488 *pos++ = WLAN_EID_SUPP_RATES;
489 *pos++ = supp_rates_len;
490
491 count = 0;
492 for (i = 0; i < sband->n_bitrates; i++) {
493 if (BIT(i) & rates) {
494 int rate = sband->bitrates[i].bitrate;
495 *pos++ = (u8) (rate / 5);
496 if (++count == 8)
497 break;
498 }
499 }
500
501 if (rates_len > count) {
502 pos = skb_put(skb, rates_len - count + 2);
503 *pos++ = WLAN_EID_EXT_SUPP_RATES;
504 *pos++ = rates_len - count;
505
506 for (i++; i < sband->n_bitrates; i++) {
507 if (BIT(i) & rates) {
508 int rate = sband->bitrates[i].bitrate;
509 *pos++ = (u8) (rate / 5);
510 }
511 }
512 }
513
514 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
515 /* 1. power capabilities */
516 pos = skb_put(skb, 4);
517 *pos++ = WLAN_EID_PWR_CAPABILITY;
518 *pos++ = 2;
519 *pos++ = 0; /* min tx power */
55de908a 520 *pos++ = chan->max_power; /* max tx power */
66e67e41
JB		 521
522 /* 2. supported channels */
523 /* TODO: get this in reg domain format */
524 pos = skb_put(skb, 2 * sband->n_channels + 2);
525 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
526 *pos++ = 2 * sband->n_channels;
527 for (i = 0; i < sband->n_channels; i++) {
528 *pos++ = ieee80211_frequency_to_channel(
529 sband->channels[i].center_freq);
530 *pos++ = 1; /* one channel in the subband*/
531 }
532 }
533
534 /* if present, add any custom IEs that go before HT */
535 if (assoc_data->ie_len && assoc_data->ie) {
536 static const u8 before_ht[] = {
537 WLAN_EID_SSID,
538 WLAN_EID_SUPP_RATES,
539 WLAN_EID_EXT_SUPP_RATES,
540 WLAN_EID_PWR_CAPABILITY,
541 WLAN_EID_SUPPORTED_CHANNELS,
542 WLAN_EID_RSN,
543 WLAN_EID_QOS_CAPA,
544 WLAN_EID_RRM_ENABLED_CAPABILITIES,
545 WLAN_EID_MOBILITY_DOMAIN,
546 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
547 };
548 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
549 before_ht, ARRAY_SIZE(before_ht),
550 offset);
551 pos = skb_put(skb, noffset - offset);
552 memcpy(pos, assoc_data->ie + offset, noffset - offset);
553 offset = noffset;
554 }
555
f2d9d270
JB		 556 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
557 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
558 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
559
a8243b72 560 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 561 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 562 sband, chan, sdata->smps_mode);
66e67e41 563
d545daba
MP		 564 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
565 ieee80211_add_vht_ie(sdata, skb, sband);
566
66e67e41
JB		 567 /* if present, add any custom non-vendor IEs that go after HT */
568 if (assoc_data->ie_len && assoc_data->ie) {
569 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
570 assoc_data->ie_len,
571 offset);
572 pos = skb_put(skb, noffset - offset);
573 memcpy(pos, assoc_data->ie + offset, noffset - offset);
574 offset = noffset;
575 }
576
76f0303d
JB		 577 if (assoc_data->wmm) {
578 if (assoc_data->uapsd) {
dc41e4d4
EP		 579 qos_info = ifmgd->uapsd_queues;
580 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 581 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
582 } else {
583 qos_info = 0;
584 }
585
586 pos = skb_put(skb, 9);
587 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
588 *pos++ = 7; /* len */
589 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
590 *pos++ = 0x50;
591 *pos++ = 0xf2;
592 *pos++ = 2; /* WME */
593 *pos++ = 0; /* WME info */
594 *pos++ = 1; /* WME ver */
595 *pos++ = qos_info;
596 }
597
598 /* add any remaining custom (i.e. vendor specific here) IEs */
599 if (assoc_data->ie_len && assoc_data->ie) {
600 noffset = assoc_data->ie_len;
601 pos = skb_put(skb, noffset - offset);
602 memcpy(pos, assoc_data->ie + offset, noffset - offset);
603 }
604
a1845fc7
JB		 605 drv_mgd_prepare_tx(local, sdata);
606
66e67e41
JB		 607 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
608 ieee80211_tx_skb(sdata, skb);
609}
610
572e0012
KV		 611void ieee80211_send_pspoll(struct ieee80211_local *local,
612 struct ieee80211_sub_if_data *sdata)
613{
572e0012
KV		 614 struct ieee80211_pspoll *pspoll;
615 struct sk_buff *skb;
572e0012 616
d8cd189e
KV		 617 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
618 if (!skb)
572e0012 619 return;
572e0012 620
d8cd189e
KV		 621 pspoll = (struct ieee80211_pspoll *) skb->data;
622 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 623
62ae67be
JB		 624 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
625 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 626}
627
965bedad
JB		 628void ieee80211_send_nullfunc(struct ieee80211_local *local,
629 struct ieee80211_sub_if_data *sdata,
630 int powersave)
631{
632 struct sk_buff *skb;
d8cd189e 633 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 634 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 635
d8cd189e
KV		 636 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
637 if (!skb)
965bedad 638 return;
965bedad 639
d8cd189e 640 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 641 if (powersave)
d8cd189e 642 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 643
62ae67be 644 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
b6f35301
RM		 645 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
646 IEEE80211_STA_CONNECTION_POLL))
647 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
648
62ae67be 649 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 650}
651
d524215f
FF		 652static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
653 struct ieee80211_sub_if_data *sdata)
654{
655 struct sk_buff *skb;
656 struct ieee80211_hdr *nullfunc;
657 __le16 fc;
658
659 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
660 return;
661
662 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 663 if (!skb)
d524215f 664 return;
d15b8459 665
d524215f
FF		 666 skb_reserve(skb, local->hw.extra_tx_headroom);
667
668 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
669 memset(nullfunc, 0, 30);
670 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
671 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
672 nullfunc->frame_control = fc;
673 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
674 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
675 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
676 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
677
678 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
679 ieee80211_tx_skb(sdata, skb);
680}
681
cc32abd4
JB		 682/* spectrum management related things */
683static void ieee80211_chswitch_work(struct work_struct *work)
684{
685 struct ieee80211_sub_if_data *sdata =
686 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
cc32abd4
JB		 687 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
688
9607e6b6 689 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 690 return;
691
77fdaa12
JB		 692 mutex_lock(&ifmgd->mtx);
693 if (!ifmgd->associated)
694 goto out;
cc32abd4 695
55de908a 696 sdata->local->_oper_channel = sdata->local->csa_channel;
5ce6e438
JB		 697 if (!sdata->local->ops->channel_switch) {
698 /* call "hw_config" only if doing sw channel switch */
699 ieee80211_hw_config(sdata->local,
700 IEEE80211_CONF_CHANGE_CHANNEL);
1ea57b1f
SL		 701 } else {
702 /* update the device channel directly */
55de908a 703 sdata->local->hw.conf.channel = sdata->local->_oper_channel;
5ce6e438 704 }
77fdaa12 705
cc32abd4 706 /* XXX: shouldn't really modify cfg80211-owned data! */
55de908a 707 ifmgd->associated->channel = sdata->local->_oper_channel;
cc32abd4 708
57eebdf3 709 /* XXX: wait for a beacon first? */
cc32abd4
JB		 710 ieee80211_wake_queues_by_reason(&sdata->local->hw,
711 IEEE80211_QUEUE_STOP_REASON_CSA);
77fdaa12
JB		 712 out:
713 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
714 mutex_unlock(&ifmgd->mtx);
cc32abd4
JB		 715}
716
5ce6e438
JB		 717void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
718{
55de908a
JB		 719 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
720 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 721
722 trace_api_chswitch_done(sdata, success);
723 if (!success) {
882a7c69
JB		 724 sdata_info(sdata,
725 "driver channel switch failed, disconnecting\n");
726 ieee80211_queue_work(&sdata->local->hw,
727 &ifmgd->csa_connection_drop_work);
728 } else {
729 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 730 }
5ce6e438
JB		 731}
732EXPORT_SYMBOL(ieee80211_chswitch_done);
733
cc32abd4
JB		 734static void ieee80211_chswitch_timer(unsigned long data)
735{
736 struct ieee80211_sub_if_data *sdata =
737 (struct ieee80211_sub_if_data *) data;
738 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
739
5bb644a0
JB		 740 if (sdata->local->quiescing) {
741 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
742 return;
743 }
744
42935eca 745 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
cc32abd4
JB		 746}
747
748void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
749 struct ieee80211_channel_sw_ie *sw_elem,
5ce6e438
JB		 750 struct ieee80211_bss *bss,
751 u64 timestamp)
cc32abd4 752{
0c1ad2ca
JB		 753 struct cfg80211_bss *cbss =
754 container_of((void *)bss, struct cfg80211_bss, priv);
cc32abd4
JB		 755 struct ieee80211_channel *new_ch;
756 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
59eb21a6
BR		 757 int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num,
758 cbss->channel->band);
55de908a 759 struct ieee80211_chanctx *chanctx;
cc32abd4 760
77fdaa12
JB		 761 ASSERT_MGD_MTX(ifmgd);
762
763 if (!ifmgd->associated)
cc32abd4
JB		 764 return;
765
fbe9c429 766 if (sdata->local->scanning)
cc32abd4
JB		 767 return;
768
769 /* Disregard subsequent beacons if we are already running a timer
770 processing a CSA */
771
772 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
773 return;
774
775 new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
882a7c69
JB		 776 if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) {
777 sdata_info(sdata,
778 "AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
779 ifmgd->associated->bssid, new_freq);
780 ieee80211_queue_work(&sdata->local->hw,
781 &ifmgd->csa_connection_drop_work);
cc32abd4 782 return;
882a7c69 783 }
cc32abd4 784
57eebdf3
JB		 785 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
786
55de908a
JB		 787 if (sdata->local->use_chanctx) {
788 sdata_info(sdata,
789 "not handling channel switch with channel contexts\n");
790 ieee80211_queue_work(&sdata->local->hw,
791 &ifmgd->csa_connection_drop_work);
792 }
793
794 mutex_lock(&sdata->local->chanctx_mtx);
795 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
796 mutex_unlock(&sdata->local->chanctx_mtx);
797 return;
798 }
799 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
800 struct ieee80211_chanctx, conf);
801 if (chanctx->refcount > 1) {
802 sdata_info(sdata,
803 "channel switch with multiple interfaces on the same channel, disconnecting\n");
804 ieee80211_queue_work(&sdata->local->hw,
805 &ifmgd->csa_connection_drop_work);
806 mutex_unlock(&sdata->local->chanctx_mtx);
807 return;
808 }
809 mutex_unlock(&sdata->local->chanctx_mtx);
810
811 sdata->local->csa_channel = new_ch;
812
57eebdf3
JB		 813 if (sw_elem->mode)
814 ieee80211_stop_queues_by_reason(&sdata->local->hw,
815 IEEE80211_QUEUE_STOP_REASON_CSA);
816
5ce6e438
JB		 817 if (sdata->local->ops->channel_switch) {
818 /* use driver's channel switch callback */
57eebdf3
JB		 819 struct ieee80211_channel_switch ch_switch = {
820 .timestamp = timestamp,
821 .block_tx = sw_elem->mode,
822 .channel = new_ch,
823 .count = sw_elem->count,
824 };
825
5ce6e438
JB		 826 drv_channel_switch(sdata->local, &ch_switch);
827 return;
828 }
829
830 /* channel switch handled in software */
57eebdf3 831 if (sw_elem->count <= 1)
42935eca 832 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
57eebdf3 833 else
cc32abd4 834 mod_timer(&ifmgd->chswitch_timer,
3049000b
JB		 835 TU_TO_EXP_TIME(sw_elem->count *
836 cbss->beacon_interval));
cc32abd4
JB		 837}
838
1ea6f9c0
JB		 839static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
840 struct ieee80211_channel *channel,
841 const u8 *country_ie, u8 country_ie_len,
842 const u8 *pwr_constr_elem)
cc32abd4 843{
04b7b2ff
JB		 844 struct ieee80211_country_ie_triplet *triplet;
845 int chan = ieee80211_frequency_to_channel(channel->center_freq);
846 int i, chan_pwr, chan_increment, new_ap_level;
847 bool have_chan_pwr = false;
cc32abd4 848
04b7b2ff
JB		 849 /* Invalid IE */
850 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 851 return 0;
cc32abd4 852
04b7b2ff
JB		 853 triplet = (void *)(country_ie + 3);
854 country_ie_len -= 3;
855
856 switch (channel->band) {
857 default:
858 WARN_ON_ONCE(1);
859 /* fall through */
860 case IEEE80211_BAND_2GHZ:
861 case IEEE80211_BAND_60GHZ:
862 chan_increment = 1;
863 break;
864 case IEEE80211_BAND_5GHZ:
865 chan_increment = 4;
866 break;
cc32abd4 867 }
04b7b2ff
JB		 868
869 /* find channel */
870 while (country_ie_len >= 3) {
871 u8 first_channel = triplet->chans.first_channel;
872
873 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
874 goto next;
875
876 for (i = 0; i < triplet->chans.num_channels; i++) {
877 if (first_channel + i * chan_increment == chan) {
878 have_chan_pwr = true;
879 chan_pwr = triplet->chans.max_power;
880 break;
881 }
882 }
883 if (have_chan_pwr)
884 break;
885
886 next:
887 triplet++;
888 country_ie_len -= 3;
889 }
890
891 if (!have_chan_pwr)
1ea6f9c0 892 return 0;
04b7b2ff
JB		 893
894 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
895
1ea6f9c0
JB		 896 if (sdata->ap_power_level == new_ap_level)
897 return 0;
04b7b2ff
JB		 898
899 sdata_info(sdata,
900 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
901 new_ap_level, chan_pwr, *pwr_constr_elem,
902 sdata->u.mgd.bssid);
1ea6f9c0
JB		 903 sdata->ap_power_level = new_ap_level;
904 if (__ieee80211_recalc_txpower(sdata))
905 return BSS_CHANGED_TXPOWER;
906 return 0;
cc32abd4
JB		 907}
908
f90754c1
JO		 909void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif)
910{
911 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
912 struct ieee80211_local *local = sdata->local;
913 struct ieee80211_conf *conf = &local->hw.conf;
914
915 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
916 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
917 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
918
919 local->disable_dynamic_ps = false;
920 conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout;
921}
922EXPORT_SYMBOL(ieee80211_enable_dyn_ps);
923
924void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif)
925{
926 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
927 struct ieee80211_local *local = sdata->local;
928 struct ieee80211_conf *conf = &local->hw.conf;
929
930 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
931 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
932 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
933
934 local->disable_dynamic_ps = true;
935 conf->dynamic_ps_timeout = 0;
936 del_timer_sync(&local->dynamic_ps_timer);
937 ieee80211_queue_work(&local->hw,
938 &local->dynamic_ps_enable_work);
939}
940EXPORT_SYMBOL(ieee80211_disable_dyn_ps);
941
965bedad
JB		 942/* powersave */
943static void ieee80211_enable_ps(struct ieee80211_local *local,
944 struct ieee80211_sub_if_data *sdata)
945{
946 struct ieee80211_conf *conf = &local->hw.conf;
947
d5edaedc
JB		 948 /*
949 * If we are scanning right now then the parameters will
950 * take effect when scan finishes.
951 */
fbe9c429 952 if (local->scanning)
d5edaedc
JB		 953 return;
954
965bedad
JB		 955 if (conf->dynamic_ps_timeout > 0 &&
956 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
957 mod_timer(&local->dynamic_ps_timer, jiffies +
958 msecs_to_jiffies(conf->dynamic_ps_timeout));
959 } else {
960 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
961 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 962
2a13052f
JO		 963 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
964 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
965 return;
966
967 conf->flags |= IEEE80211_CONF_PS;
968 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 969 }
970}
971
972static void ieee80211_change_ps(struct ieee80211_local *local)
973{
974 struct ieee80211_conf *conf = &local->hw.conf;
975
976 if (local->ps_sdata) {
965bedad
JB		 977 ieee80211_enable_ps(local, local->ps_sdata);
978 } else if (conf->flags & IEEE80211_CONF_PS) {
979 conf->flags &= ~IEEE80211_CONF_PS;
980 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
981 del_timer_sync(&local->dynamic_ps_timer);
982 cancel_work_sync(&local->dynamic_ps_enable_work);
983 }
984}
985
808118cb
JY		 986static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
987{
988 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
989 struct sta_info *sta = NULL;
c2c98fde 990 bool authorized = false;
808118cb
JY		 991
992 if (!mgd->powersave)
993 return false;
994
05cb9108
JB		 995 if (mgd->broken_ap)
996 return false;
997
808118cb
JY		 998 if (!mgd->associated)
999 return false;
1000
808118cb
JY		 1001 if (mgd->flags & (IEEE80211_STA_BEACON_POLL |
1002 IEEE80211_STA_CONNECTION_POLL))
1003 return false;
1004
1005 rcu_read_lock();
1006 sta = sta_info_get(sdata, mgd->bssid);
1007 if (sta)
c2c98fde 1008 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1009 rcu_read_unlock();
1010
c2c98fde 1011 return authorized;
808118cb
JY		 1012}
1013
965bedad 1014/* need to hold RTNL or interface lock */
10f644a4 1015void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1016{
1017 struct ieee80211_sub_if_data *sdata, *found = NULL;
1018 int count = 0;
195e294d 1019 int timeout;
965bedad
JB		 1020
1021 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1022 local->ps_sdata = NULL;
1023 return;
1024 }
1025
1026 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1027 if (!ieee80211_sdata_running(sdata))
965bedad 1028 continue;
8c7914de
RM		 1029 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1030 /* If an AP vif is found, then disable PS
1031 * by setting the count to zero thereby setting
1032 * ps_sdata to NULL.
1033 */
1034 count = 0;
1035 break;
1036 }
965bedad
JB		 1037 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1038 continue;
1039 found = sdata;
1040 count++;
1041 }
1042
808118cb 1043 if (count == 1 && ieee80211_powersave_allowed(found)) {
f90754c1 1044 struct ieee80211_conf *conf = &local->hw.conf;
10f644a4
JB		 1045 s32 beaconint_us;
1046
1047 if (latency < 0)
ed77134b 1048 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1049
1050 beaconint_us = ieee80211_tu_to_usec(
1051 found->vif.bss_conf.beacon_int);
1052
ff616381 1053 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1054 if (timeout < 0) {
1055 /*
ff616381
JO		 1056 * Go to full PSM if the user configures a very low
1057 * latency requirement.
0ab82b04
EP		 1058 * The 2000 second value is there for compatibility
1059 * until the PM_QOS_NETWORK_LATENCY is configured
1060 * with real values.
195e294d 1061 */
0ab82b04
EP		 1062 if (latency > (1900 * USEC_PER_MSEC) &&
1063 latency != (2000 * USEC_PER_SEC))
195e294d 1064 timeout = 0;
ff616381
JO		 1065 else
1066 timeout = 100;
195e294d 1067 }
f90754c1
JO		 1068 local->dynamic_ps_user_timeout = timeout;
1069 if (!local->disable_dynamic_ps)
1070 conf->dynamic_ps_timeout =
1071 local->dynamic_ps_user_timeout;
195e294d 1072
04fe2037 1073 if (beaconint_us > latency) {
10f644a4 1074 local->ps_sdata = NULL;
04fe2037 1075 } else {
56007a02 1076 struct ieee80211_bss *bss;
04fe2037 1077 int maxslp = 1;
56007a02 1078 u8 dtimper;
04fe2037 1079
56007a02
JB		 1080 bss = (void *)found->u.mgd.associated->priv;
1081 dtimper = bss->dtim_period;
1082
1083 /* If the TIM IE is invalid, pretend the value is 1 */
1084 if (!dtimper)
1085 dtimper = 1;
1086 else if (dtimper > 1)
04fe2037
JB		 1087 maxslp = min_t(int, dtimper,
1088 latency / beaconint_us);
1089
9ccebe61 1090 local->hw.conf.max_sleep_period = maxslp;
56007a02 1091 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1092 local->ps_sdata = found;
04fe2037 1093 }
10f644a4 1094 } else {
965bedad 1095 local->ps_sdata = NULL;
10f644a4 1096 }
965bedad
JB		 1097
1098 ieee80211_change_ps(local);
1099}
1100
ab095877
EP		 1101void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1102{
1103 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1104
1105 if (sdata->vif.bss_conf.ps != ps_allowed) {
1106 sdata->vif.bss_conf.ps = ps_allowed;
1107 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1108 }
1109}
1110
965bedad
JB		 1111void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1112{
1113 struct ieee80211_local *local =
1114 container_of(work, struct ieee80211_local,
1115 dynamic_ps_disable_work);
1116
1117 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1118 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1119 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1120 }
1121
1122 ieee80211_wake_queues_by_reason(&local->hw,
1123 IEEE80211_QUEUE_STOP_REASON_PS);
1124}
1125
1126void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1127{
1128 struct ieee80211_local *local =
1129 container_of(work, struct ieee80211_local,
1130 dynamic_ps_enable_work);
1131 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1132 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1133 unsigned long flags;
1134 int q;
965bedad
JB		 1135
1136 /* can only happen when PS was just disabled anyway */
1137 if (!sdata)
1138 return;
1139
5e34069c
CL		 1140 ifmgd = &sdata->u.mgd;
1141
965bedad
JB		 1142 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1143 return;
1144
77b7023a
AN		 1145 if (!local->disable_dynamic_ps &&
1146 local->hw.conf.dynamic_ps_timeout > 0) {
1147 /* don't enter PS if TX frames are pending */
1148 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1149 mod_timer(&local->dynamic_ps_timer, jiffies +
1150 msecs_to_jiffies(
1151 local->hw.conf.dynamic_ps_timeout));
1152 return;
1153 }
77b7023a
AN		 1154
1155 /*
1156 * transmission can be stopped by others which leads to
1157 * dynamic_ps_timer expiry. Postpone the ps timer if it
1158 * is not the actual idle state.
1159 */
1160 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1161 for (q = 0; q < local->hw.queues; q++) {
1162 if (local->queue_stop_reasons[q]) {
1163 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1164 flags);
1165 mod_timer(&local->dynamic_ps_timer, jiffies +
1166 msecs_to_jiffies(
1167 local->hw.conf.dynamic_ps_timeout));
1168 return;
1169 }
1170 }
1171 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1172 }
1ddc2867 1173
375177bf 1174 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1175 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
f3e85b9e 1176 netif_tx_stop_all_queues(sdata->dev);
965bedad 1177
e8306f98
VN		 1178 if (drv_tx_frames_pending(local))
1179 mod_timer(&local->dynamic_ps_timer, jiffies +
1180 msecs_to_jiffies(
1181 local->hw.conf.dynamic_ps_timeout));
1182 else {
1183 ieee80211_send_nullfunc(local, sdata, 1);
1184 /* Flush to get the tx status of nullfunc frame */
1185 drv_flush(local, false);
1186 }
f3e85b9e
VN		 1187 }
1188
2a13052f
JO		 1189 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1190 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1191 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1192 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1193 local->hw.conf.flags |= IEEE80211_CONF_PS;
1194 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1195 }
f3e85b9e 1196
77b7023a
AN		 1197 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1198 netif_tx_wake_all_queues(sdata->dev);
965bedad
JB		 1199}
1200
1201void ieee80211_dynamic_ps_timer(unsigned long data)
1202{
1203 struct ieee80211_local *local = (void *) data;
1204
78f1a8b7 1205 if (local->quiescing || local->suspended)
5bb644a0
JB		 1206 return;
1207
42935eca 1208 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1209}
1210
60f8b39c 1211/* MLME */
7d25745d 1212static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1213 struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1214 u8 *wmm_param, size_t wmm_param_len)
1215{
f0706e82 1216 struct ieee80211_tx_queue_params params;
4ced3f74 1217 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1218 size_t left;
1219 int count;
ab13315a 1220 u8 *pos, uapsd_queues = 0;
f0706e82 1221
e1b3ec1a 1222 if (!local->ops->conf_tx)
7d25745d 1223 return false;
e1b3ec1a 1224
32c5057b 1225 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1226 return false;
3434fbd3
JB		 1227
1228 if (!wmm_param)
7d25745d 1229 return false;
3434fbd3 1230
f0706e82 1231 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1232 return false;
ab13315a
KV		 1233
1234 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1235 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1236
f0706e82 1237 count = wmm_param[6] & 0x0f;
46900298 1238 if (count == ifmgd->wmm_last_param_set)
7d25745d 1239 return false;
46900298 1240 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1241
1242 pos = wmm_param + 8;
1243 left = wmm_param_len - 8;
1244
1245 memset(&params, 0, sizeof(params));
1246
00e96dec 1247 sdata->wmm_acm = 0;
f0706e82
JB		 1248 for (; left >= 4; left -= 4, pos += 4) {
1249 int aci = (pos[0] >> 5) & 0x03;
1250 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1251 bool uapsd = false;
f0706e82
JB		 1252 int queue;
1253
1254 switch (aci) {
0eeb59fe 1255 case 1: /* AC_BK */
e100bb64 1256 queue = 3;
988c0f72 1257 if (acm)
00e96dec 1258 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1259 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1260 uapsd = true;
f0706e82 1261 break;
0eeb59fe 1262 case 2: /* AC_VI */
e100bb64 1263 queue = 1;
988c0f72 1264 if (acm)
00e96dec 1265 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1266 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1267 uapsd = true;
f0706e82 1268 break;
0eeb59fe 1269 case 3: /* AC_VO */
e100bb64 1270 queue = 0;
988c0f72 1271 if (acm)
00e96dec 1272 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1273 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1274 uapsd = true;
f0706e82 1275 break;
0eeb59fe 1276 case 0: /* AC_BE */
f0706e82 1277 default:
e100bb64 1278 queue = 2;
988c0f72 1279 if (acm)
00e96dec 1280 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1281 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1282 uapsd = true;
f0706e82
JB		 1283 break;
1284 }
1285
1286 params.aifs = pos[0] & 0x0f;
1287 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1288 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1289 params.txop = get_unaligned_le16(pos + 2);
ab13315a
KV		 1290 params.uapsd = uapsd;
1291
bdcbd8e0
JB		 1292 mlme_dbg(sdata,
1293 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1294 queue, aci, acm,
1295 params.aifs, params.cw_min, params.cw_max,
1296 params.txop, params.uapsd);
f6f3def3
EP		 1297 sdata->tx_conf[queue] = params;
1298 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1299 sdata_err(sdata,
1300 "failed to set TX queue parameters for queue %d\n",
1301 queue);
f0706e82 1302 }
e1b3ec1a
SG		 1303
1304 /* enable WMM or activate new settings */
4ced3f74 1305 sdata->vif.bss_conf.qos = true;
7d25745d 1306 return true;
f0706e82
JB		 1307}
1308
925e64c3
SG		 1309static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1310{
1311 lockdep_assert_held(&sdata->local->mtx);
1312
1313 sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
1314 IEEE80211_STA_BEACON_POLL);
1315 ieee80211_run_deferred_scan(sdata->local);
1316}
1317
1318static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1319{
1320 mutex_lock(&sdata->local->mtx);
1321 __ieee80211_stop_poll(sdata);
1322 mutex_unlock(&sdata->local->mtx);
1323}
1324
7a5158ef
JB		 1325static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1326 u16 capab, bool erp_valid, u8 erp)
5628221c 1327{
bda3933a 1328 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1329 u32 changed = 0;
7a5158ef
JB		 1330 bool use_protection;
1331 bool use_short_preamble;
1332 bool use_short_slot;
1333
1334 if (erp_valid) {
1335 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1336 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1337 } else {
1338 use_protection = false;
1339 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1340 }
1341
1342 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1343 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1344 use_short_slot = true;
5628221c 1345
471b3efd 1346 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1347 bss_conf->use_cts_prot = use_protection;
1348 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1349 }
7e9ed188 1350
d43c7b37 1351 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1352 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1353 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1354 }
d9430a32 1355
7a5158ef 1356 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1357 bss_conf->use_short_slot = use_short_slot;
1358 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1359 }
1360
1361 return changed;
1362}
1363
f698d856 1364static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1365 struct cfg80211_bss *cbss,
ae5eb026 1366 u32 bss_info_changed)
f0706e82 1367{
0c1ad2ca 1368 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1369 struct ieee80211_local *local = sdata->local;
68542962 1370 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1371
ae5eb026 1372 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1373 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1374 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1375
7ccc8bd7
FF		 1376 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
1377 IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
1378
0c1ad2ca
JB		 1379 sdata->u.mgd.associated = cbss;
1380 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1381
17e4ec14
JM		 1382 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1383
488dd7b5 1384 if (sdata->vif.p2p) {
9caf0364 1385 const struct cfg80211_bss_ies *ies;
488dd7b5 1386
9caf0364
JB		 1387 rcu_read_lock();
1388 ies = rcu_dereference(cbss->ies);
1389 if (ies) {
1390 u8 noa[2];
1391 int ret;
1392
1393 ret = cfg80211_get_p2p_attr(
1394 ies->data, ies->len,
1395 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
1396 noa, sizeof(noa));
1397 if (ret >= 2) {
1398 bss_conf->p2p_oppps = noa[1] & 0x80;
1399 bss_conf->p2p_ctwindow = noa[1] & 0x7f;
1400 bss_info_changed |= BSS_CHANGED_P2P_PS;
1401 sdata->u.mgd.p2p_noa_index = noa[0];
1402 }
488dd7b5 1403 }
9caf0364 1404 rcu_read_unlock();
488dd7b5
JB		 1405 }
1406
b291ba11 1407 /* just to be sure */
925e64c3 1408 ieee80211_stop_poll(sdata);
b291ba11 1409
9ac19a90 1410 ieee80211_led_assoc(local, 1);
9306102e 1411
e5b900d2
JB		 1412 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
1413 bss_conf->dtim_period = bss->dtim_period;
1414 else
1415 bss_conf->dtim_period = 0;
1416
68542962 1417 bss_conf->assoc = 1;
9cef8737 1418
a97c13c3 1419 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1420 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1421 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1422 bss_info_changed |= BSS_CHANGED_CQM;
1423
68542962
JO		 1424 /* Enable ARP filtering */
1425 if (bss_conf->arp_filter_enabled != sdata->arp_filter_state) {
1426 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
1427 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
1428 }
1429
ae5eb026 1430 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1431
056508dc
JB		 1432 mutex_lock(&local->iflist_mtx);
1433 ieee80211_recalc_ps(local, -1);
1434 mutex_unlock(&local->iflist_mtx);
e0cb686f 1435
04ecd257 1436 ieee80211_recalc_smps(sdata);
ab095877
EP		 1437 ieee80211_recalc_ps_vif(sdata);
1438
8a5b33f5 1439 netif_tx_start_all_queues(sdata->dev);
9ac19a90 1440 netif_carrier_on(sdata->dev);
f0706e82
JB		 1441}
1442
e69e95db 1443static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1444 u16 stype, u16 reason, bool tx,
1445 u8 *frame_buf)
aa458d17 1446{
46900298 1447 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17
TW		 1448 struct ieee80211_local *local = sdata->local;
1449 struct sta_info *sta;
3cc5240b 1450 u32 changed = 0;
aa458d17 1451
77fdaa12
JB		 1452 ASSERT_MGD_MTX(ifmgd);
1453
37ad3888
JB		 1454 if (WARN_ON_ONCE(tx && !frame_buf))
1455 return;
1456
b291ba11
JB		 1457 if (WARN_ON(!ifmgd->associated))
1458 return;
1459
79543d8e
DS		 1460 ieee80211_stop_poll(sdata);
1461
77fdaa12 1462 ifmgd->associated = NULL;
77fdaa12
JB		 1463
1464 /*
1465 * we need to commit the associated = NULL change because the
1466 * scan code uses that to determine whether this iface should
1467 * go to/wake up from powersave or not -- and could otherwise
1468 * wake the queues erroneously.
1469 */
1470 smp_mb();
1471
1472 /*
1473 * Thus, we can only afterwards stop the queues -- to account
1474 * for the case where another CPU is finishing a scan at this
1475 * time -- we don't want the scan code to enable queues.
1476 */
aa458d17 1477
8a5b33f5 1478 netif_tx_stop_all_queues(sdata->dev);
aa458d17
TW		 1479 netif_carrier_off(sdata->dev);
1480
2a419056 1481 mutex_lock(&local->sta_mtx);
88a9e31c 1482 sta = sta_info_get(sdata, ifmgd->bssid);
4cad6c7c 1483 if (sta) {
c2c98fde 1484 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
7f161146 1485 ieee80211_sta_tear_down_BA_sessions(sta, false);
4cad6c7c 1486 }
2a419056 1487 mutex_unlock(&local->sta_mtx);
aa458d17 1488
88bc40e8
EP		 1489 /*
1490 * if we want to get out of ps before disassoc (why?) we have
1491 * to do it before sending disassoc, as otherwise the null-packet
1492 * won't be valid.
1493 */
1494 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1495 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1496 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1497 }
1498 local->ps_sdata = NULL;
1499
ab095877
EP		 1500 /* disable per-vif ps */
1501 ieee80211_recalc_ps_vif(sdata);
1502
f823981e
EP		 1503 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1504 if (tx)
1505 drv_flush(local, false);
1506
37ad3888
JB		 1507 /* deauthenticate/disassociate now */
1508 if (tx || frame_buf)
88a9e31c
EP		 1509 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1510 reason, tx, frame_buf);
37ad3888
JB		 1511
1512 /* flush out frame */
1513 if (tx)
1514 drv_flush(local, false);
1515
88a9e31c
EP		 1516 /* clear bssid only after building the needed mgmt frames */
1517 memset(ifmgd->bssid, 0, ETH_ALEN);
1518
37ad3888
JB		 1519 /* remove AP and TDLS peers */
1520 sta_info_flush(local, sdata);
1521
1522 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1523 changed |= ieee80211_reset_erp_info(sdata);
1524
f5e5bf25 1525 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1526 changed |= BSS_CHANGED_ASSOC;
1527 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1528
488dd7b5
JB		 1529 sdata->vif.bss_conf.p2p_ctwindow = 0;
1530 sdata->vif.bss_conf.p2p_oppps = false;
1531
413ad50a 1532 /* on the next assoc, re-program HT parameters */
ef96a842
BG		 1533 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1534 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
413ad50a 1535
1ea6f9c0 1536 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1537
520eb820
KV		 1538 del_timer_sync(&local->dynamic_ps_timer);
1539 cancel_work_sync(&local->dynamic_ps_enable_work);
1540
68542962
JO		 1541 /* Disable ARP filtering */
1542 if (sdata->vif.bss_conf.arp_filter_enabled) {
1543 sdata->vif.bss_conf.arp_filter_enabled = false;
1544 changed |= BSS_CHANGED_ARP_FILTER;
1545 }
1546
3abead59
JB		 1547 sdata->vif.bss_conf.qos = false;
1548 changed |= BSS_CHANGED_QOS;
1549
0aaffa9b
JB		 1550 /* The BSSID (not really interesting) and HT changed */
1551 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1552 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1553
3abead59
JB		 1554 /* disassociated - set to defaults now */
1555 ieee80211_set_wmm_default(sdata, false);
1556
b9dcf712
JB		 1557 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1558 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1559 del_timer_sync(&sdata->u.mgd.timer);
1560 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc
JB		 1561
1562 sdata->u.mgd.timers_running = 0;
028e8da0
JB		 1563
1564 ifmgd->flags = 0;
1565 ieee80211_vif_release_channel(sdata);
aa458d17 1566}
f0706e82 1567
3cf335d5
KV		 1568void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1569 struct ieee80211_hdr *hdr)
1570{
1571 /*
1572 * We can postpone the mgd.timer whenever receiving unicast frames
1573 * from AP because we know that the connection is working both ways
1574 * at that time. But multicast frames (and hence also beacons) must
1575 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1576 * data idle periods for sending the periodic probe request to the
1577 * AP we're connected to.
3cf335d5 1578 */
b291ba11
JB		 1579 if (is_multicast_ether_addr(hdr->addr1))
1580 return;
1581
be099e82 1582 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1583}
f0706e82 1584
4e5ff376
FF		 1585static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1586{
1587 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1588 struct ieee80211_local *local = sdata->local;
4e5ff376 1589
133d40f9 1590 mutex_lock(&local->mtx);
4e5ff376 1591 if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
133d40f9
SG		 1592 IEEE80211_STA_CONNECTION_POLL))) {
1593 mutex_unlock(&local->mtx);
1594 return;
1595 }
4e5ff376 1596
925e64c3 1597 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1598
1599 mutex_lock(&local->iflist_mtx);
1600 ieee80211_recalc_ps(local, -1);
1601 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1602
1603 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1604 goto out;
4e5ff376
FF		 1605
1606 /*
1607 * We've received a probe response, but are not sure whether
1608 * we have or will be receiving any beacons or data, so let's
1609 * schedule the timers again, just in case.
1610 */
1611 ieee80211_sta_reset_beacon_monitor(sdata);
1612
1613 mod_timer(&ifmgd->conn_mon_timer,
1614 round_jiffies_up(jiffies +
1615 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1616out:
133d40f9 1617 mutex_unlock(&local->mtx);
4e5ff376
FF		 1618}
1619
1620void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1621 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1622{
75706d0e 1623 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1624 return;
1625
04ac3c0e
FF		 1626 if (ack)
1627 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1628
1629 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1630 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e
FF		 1631 if (ack)
1632 sdata->u.mgd.probe_send_count = 0;
1633 else
1634 sdata->u.mgd.nullfunc_failed = true;
4e5ff376
FF		 1635 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
1636 }
1637}
1638
a43abf29
ML		 1639static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1640{
1641 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1642 const u8 *ssid;
f01a067d 1643 u8 *dst = ifmgd->associated->bssid;
180205bd 1644 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1645
1646 /*
1647 * Try sending broadcast probe requests for the last three
1648 * probe requests after the first ones failed since some
1649 * buggy APs only support broadcast probe requests.
1650 */
1651 if (ifmgd->probe_send_count >= unicast_limit)
1652 dst = NULL;
a43abf29 1653
4e5ff376
FF		 1654 /*
1655 * When the hardware reports an accurate Tx ACK status, it's
1656 * better to send a nullfunc frame instead of a probe request,
1657 * as it will kick us off the AP quickly if we aren't associated
1658 * anymore. The timeout will be reset if the frame is ACKed by
1659 * the AP.
1660 */
992e68bf
SD		 1661 ifmgd->probe_send_count++;
1662
04ac3c0e
FF		 1663 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1664 ifmgd->nullfunc_failed = false;
4e5ff376 1665 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 1666 } else {
88c868c4
SG		 1667 int ssid_len;
1668
9caf0364 1669 rcu_read_lock();
4e5ff376 1670 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 1671 if (WARN_ON_ONCE(ssid == NULL))
1672 ssid_len = 0;
1673 else
1674 ssid_len = ssid[1];
1675
1676 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
fe94fe05 1677 0, (u32) -1, true, false,
55de908a 1678 ifmgd->associated->channel, false);
9caf0364 1679 rcu_read_unlock();
4e5ff376 1680 }
a43abf29 1681
180205bd 1682 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
a43abf29 1683 run_again(ifmgd, ifmgd->probe_timeout);
f69b9c79
RM		 1684 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
1685 drv_flush(sdata->local, false);
a43abf29
ML		 1686}
1687
b291ba11
JB		 1688static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1689 bool beacon)
04de8381 1690{
04de8381 1691 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 1692 bool already = false;
34bfc411 1693
9607e6b6 1694 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 1695 return;
1696
77fdaa12
JB		 1697 mutex_lock(&ifmgd->mtx);
1698
1699 if (!ifmgd->associated)
1700 goto out;
1701
133d40f9
SG		 1702 mutex_lock(&sdata->local->mtx);
1703
1704 if (sdata->local->tmp_channel || sdata->local->scanning) {
1705 mutex_unlock(&sdata->local->mtx);
1706 goto out;
1707 }
1708
e87cc472 1709 if (beacon)
bdcbd8e0
JB		 1710 mlme_dbg_ratelimited(sdata,
1711 "detected beacon loss from AP - sending probe request\n");
1712
6efb71b0
HS		 1713 ieee80211_cqm_rssi_notify(&sdata->vif,
1714 NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL);
04de8381 1715
b291ba11
JB		 1716 /*
1717 * The driver/our work has already reported this event or the
1718 * connection monitoring has kicked in and we have already sent
1719 * a probe request. Or maybe the AP died and the driver keeps
1720 * reporting until we disassociate...
1721 *
1722 * In either case we have to ignore the current call to this
1723 * function (except for setting the correct probe reason bit)
1724 * because otherwise we would reset the timer every time and
1725 * never check whether we received a probe response!
1726 */
1727 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
1728 IEEE80211_STA_CONNECTION_POLL))
1729 already = true;
1730
1731 if (beacon)
1732 ifmgd->flags |= IEEE80211_STA_BEACON_POLL;
1733 else
1734 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
1735
133d40f9
SG		 1736 mutex_unlock(&sdata->local->mtx);
1737
b291ba11
JB		 1738 if (already)
1739 goto out;
1740
4e751843
JB		 1741 mutex_lock(&sdata->local->iflist_mtx);
1742 ieee80211_recalc_ps(sdata->local, -1);
1743 mutex_unlock(&sdata->local->iflist_mtx);
1744
a43abf29
ML		 1745 ifmgd->probe_send_count = 0;
1746 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12
JB		 1747 out:
1748 mutex_unlock(&ifmgd->mtx);
04de8381
KV		 1749}
1750
a619a4c0
JO		 1751struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
1752 struct ieee80211_vif *vif)
1753{
1754 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1755 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 1756 struct cfg80211_bss *cbss;
a619a4c0
JO		 1757 struct sk_buff *skb;
1758 const u8 *ssid;
88c868c4 1759 int ssid_len;
a619a4c0
JO		 1760
1761 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1762 return NULL;
1763
1764 ASSERT_MGD_MTX(ifmgd);
1765
d9b3b28b
EP		 1766 if (ifmgd->associated)
1767 cbss = ifmgd->associated;
1768 else if (ifmgd->auth_data)
1769 cbss = ifmgd->auth_data->bss;
1770 else if (ifmgd->assoc_data)
1771 cbss = ifmgd->assoc_data->bss;
1772 else
a619a4c0
JO		 1773 return NULL;
1774
9caf0364 1775 rcu_read_lock();
d9b3b28b 1776 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 1777 if (WARN_ON_ONCE(ssid == NULL))
1778 ssid_len = 0;
1779 else
1780 ssid_len = ssid[1];
1781
d9b3b28b 1782 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 1783 (u32) -1, cbss->channel,
6b77863b 1784 ssid + 2, ssid_len,
85a237fe 1785 NULL, 0, true);
9caf0364 1786 rcu_read_unlock();
a619a4c0
JO		 1787
1788 return skb;
1789}
1790EXPORT_SYMBOL(ieee80211_ap_probereq_get);
1791
882a7c69
JB		 1792static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata,
1793 bool transmit_frame)
1e4dcd01
JO		 1794{
1795 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1796 struct ieee80211_local *local = sdata->local;
6ae16775 1797 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01
JO		 1798
1799 mutex_lock(&ifmgd->mtx);
1800 if (!ifmgd->associated) {
1801 mutex_unlock(&ifmgd->mtx);
1802 return;
1803 }
1804
37ad3888
JB		 1805 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
1806 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
882a7c69
JB		 1807 transmit_frame, frame_buf);
1808 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
1e4dcd01 1809 mutex_unlock(&ifmgd->mtx);
7da7cc1d 1810
1e4dcd01
JO		 1811 /*
1812 * must be outside lock due to cfg80211,
1813 * but that's not a problem.
1814 */
6ae16775 1815 cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
fcac4fb0
FF		 1816
1817 mutex_lock(&local->mtx);
1818 ieee80211_recalc_idle(local);
1819 mutex_unlock(&local->mtx);
1e4dcd01
JO		 1820}
1821
cc74c0c7 1822static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 1823{
1824 struct ieee80211_sub_if_data *sdata =
1825 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 1826 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 1827 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1828 struct sta_info *sta;
1829
1830 if (ifmgd->associated) {
30fa9047 1831 rcu_read_lock();
a85e1d55
PS		 1832 sta = sta_info_get(sdata, ifmgd->bssid);
1833 if (sta)
1834 sta->beacon_loss_count++;
30fa9047 1835 rcu_read_unlock();
a85e1d55 1836 }
b291ba11 1837
882a7c69
JB		 1838 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) {
1839 sdata_info(sdata, "Connection to AP %pM lost\n",
1840 ifmgd->bssid);
1841 __ieee80211_disconnect(sdata, false);
1842 } else {
1e4dcd01 1843 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 1844 }
1845}
1846
1847static void ieee80211_csa_connection_drop_work(struct work_struct *work)
1848{
1849 struct ieee80211_sub_if_data *sdata =
1850 container_of(work, struct ieee80211_sub_if_data,
1851 u.mgd.csa_connection_drop_work);
1852
1853 ieee80211_wake_queues_by_reason(&sdata->local->hw,
1854 IEEE80211_QUEUE_STOP_REASON_CSA);
1855 __ieee80211_disconnect(sdata, true);
b291ba11
JB		 1856}
1857
04de8381
KV		 1858void ieee80211_beacon_loss(struct ieee80211_vif *vif)
1859{
1860 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 1861 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 1862
b5878a2d
JB		 1863 trace_api_beacon_loss(sdata);
1864
1e4dcd01
JO		 1865 WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR);
1866 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 1867}
1868EXPORT_SYMBOL(ieee80211_beacon_loss);
1869
1e4dcd01
JO		 1870void ieee80211_connection_loss(struct ieee80211_vif *vif)
1871{
1872 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1873 struct ieee80211_hw *hw = &sdata->local->hw;
1874
b5878a2d
JB		 1875 trace_api_connection_loss(sdata);
1876
1e4dcd01
JO		 1877 WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR));
1878 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
1879}
1880EXPORT_SYMBOL(ieee80211_connection_loss);
1881
1882
66e67e41
JB		 1883static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
1884 bool assoc)
1885{
1886 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
1887
1888 lockdep_assert_held(&sdata->u.mgd.mtx);
1889
66e67e41
JB		 1890 if (!assoc) {
1891 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
1892
1893 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
1894 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 1895 sdata->u.mgd.flags = 0;
55de908a 1896 ieee80211_vif_release_channel(sdata);
66e67e41
JB		 1897 }
1898
1899 cfg80211_put_bss(auth_data->bss);
1900 kfree(auth_data);
1901 sdata->u.mgd.auth_data = NULL;
1902}
1903
1904static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
1905 struct ieee80211_mgmt *mgmt, size_t len)
1906{
1907 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
1908 u8 *pos;
1909 struct ieee802_11_elems elems;
1910
1911 pos = mgmt->u.auth.variable;
1912 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
1913 if (!elems.challenge)
1914 return;
1915 auth_data->expected_transaction = 4;
a1845fc7 1916 drv_mgd_prepare_tx(sdata->local, sdata);
700e8ea6 1917 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 1918 elems.challenge - 2, elems.challenge_len + 2,
1919 auth_data->bss->bssid, auth_data->bss->bssid,
1920 auth_data->key, auth_data->key_len,
1921 auth_data->key_idx);
1922}
1923
1924static enum rx_mgmt_action __must_check
1925ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
1926 struct ieee80211_mgmt *mgmt, size_t len)
1927{
1928 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1929 u8 bssid[ETH_ALEN];
1930 u16 auth_alg, auth_transaction, status_code;
1931 struct sta_info *sta;
1932
1933 lockdep_assert_held(&ifmgd->mtx);
1934
1935 if (len < 24 + 6)
1936 return RX_MGMT_NONE;
1937
1938 if (!ifmgd->auth_data || ifmgd->auth_data->done)
1939 return RX_MGMT_NONE;
1940
1941 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
1942
b203ca39 1943 if (!ether_addr_equal(bssid, mgmt->bssid))
66e67e41
JB		 1944 return RX_MGMT_NONE;
1945
1946 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
1947 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
1948 status_code = le16_to_cpu(mgmt->u.auth.status_code);
1949
1950 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 1951 auth_transaction != ifmgd->auth_data->expected_transaction) {
1952 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
1953 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
1954 auth_transaction,
1955 ifmgd->auth_data->expected_transaction);
66e67e41 1956 return RX_MGMT_NONE;
0f4126e8 1957 }
66e67e41
JB		 1958
1959 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 1960 sdata_info(sdata, "%pM denied authentication (status %d)\n",
1961 mgmt->sa, status_code);
dac211ec
EP		 1962 ieee80211_destroy_auth_data(sdata, false);
1963 return RX_MGMT_CFG80211_RX_AUTH;
66e67e41
JB		 1964 }
1965
1966 switch (ifmgd->auth_data->algorithm) {
1967 case WLAN_AUTH_OPEN:
1968 case WLAN_AUTH_LEAP:
1969 case WLAN_AUTH_FT:
6b8ece3a 1970 case WLAN_AUTH_SAE:
66e67e41
JB		 1971 break;
1972 case WLAN_AUTH_SHARED_KEY:
1973 if (ifmgd->auth_data->expected_transaction != 4) {
1974 ieee80211_auth_challenge(sdata, mgmt, len);
1975 /* need another frame */
1976 return RX_MGMT_NONE;
1977 }
1978 break;
1979 default:
1980 WARN_ONCE(1, "invalid auth alg %d",
1981 ifmgd->auth_data->algorithm);
1982 return RX_MGMT_NONE;
1983 }
1984
bdcbd8e0 1985 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 1986 ifmgd->auth_data->done = true;
1987 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
1988 run_again(ifmgd, ifmgd->auth_data->timeout);
1989
6b8ece3a
JM		 1990 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
1991 ifmgd->auth_data->expected_transaction != 2) {
1992 /*
1993 * Report auth frame to user space for processing since another
1994 * round of Authentication frames is still needed.
1995 */
1996 return RX_MGMT_CFG80211_RX_AUTH;
1997 }
1998
66e67e41
JB		 1999 /* move station state to auth */
2000 mutex_lock(&sdata->local->sta_mtx);
2001 sta = sta_info_get(sdata, bssid);
2002 if (!sta) {
2003 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2004 goto out_err;
2005 }
2006 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2007 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2008 goto out_err;
2009 }
2010 mutex_unlock(&sdata->local->sta_mtx);
2011
2012 return RX_MGMT_CFG80211_RX_AUTH;
2013 out_err:
2014 mutex_unlock(&sdata->local->sta_mtx);
2015 /* ignore frame -- wait for timeout */
2016 return RX_MGMT_NONE;
2017}
2018
2019
77fdaa12
JB		 2020static enum rx_mgmt_action __must_check
2021ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
77fdaa12 2022 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2023{
46900298 2024 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2025 const u8 *bssid = NULL;
f0706e82
JB		 2026 u16 reason_code;
2027
66e67e41
JB		 2028 lockdep_assert_held(&ifmgd->mtx);
2029
f4ea83dd 2030 if (len < 24 + 2)
77fdaa12 2031 return RX_MGMT_NONE;
f0706e82 2032
66e67e41 2033 if (!ifmgd->associated ||
b203ca39 2034 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
66e67e41 2035 return RX_MGMT_NONE;
77fdaa12 2036
0c1ad2ca 2037 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2038
2039 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2040
bdcbd8e0
JB		 2041 sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n",
2042 bssid, reason_code);
77fdaa12 2043
37ad3888
JB		 2044 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2045
7da7cc1d 2046 mutex_lock(&sdata->local->mtx);
63f170e0 2047 ieee80211_recalc_idle(sdata->local);
7da7cc1d 2048 mutex_unlock(&sdata->local->mtx);
f0706e82 2049
77fdaa12 2050 return RX_MGMT_CFG80211_DEAUTH;
f0706e82
JB		 2051}
2052
2053
77fdaa12
JB		 2054static enum rx_mgmt_action __must_check
2055ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2056 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2057{
46900298 2058 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2059 u16 reason_code;
2060
66e67e41 2061 lockdep_assert_held(&ifmgd->mtx);
77fdaa12 2062
66e67e41 2063 if (len < 24 + 2)
77fdaa12
JB		 2064 return RX_MGMT_NONE;
2065
66e67e41 2066 if (!ifmgd->associated ||
b203ca39 2067 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
77fdaa12 2068 return RX_MGMT_NONE;
f0706e82
JB		 2069
2070 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2071
bdcbd8e0
JB		 2072 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2073 mgmt->sa, reason_code);
f0706e82 2074
37ad3888
JB		 2075 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2076
7da7cc1d 2077 mutex_lock(&sdata->local->mtx);
bc83b681 2078 ieee80211_recalc_idle(sdata->local);
7da7cc1d 2079 mutex_unlock(&sdata->local->mtx);
37ad3888 2080
77fdaa12 2081 return RX_MGMT_CFG80211_DISASSOC;
f0706e82
JB		 2082}
2083
c74d084f
CL		 2084static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2085 u8 *supp_rates, unsigned int supp_rates_len,
2086 u32 *rates, u32 *basic_rates,
2087 bool *have_higher_than_11mbit,
2088 int *min_rate, int *min_rate_index)
2089{
2090 int i, j;
2091
2092 for (i = 0; i < supp_rates_len; i++) {
2093 int rate = (supp_rates[i] & 0x7f) * 5;
2094 bool is_basic = !!(supp_rates[i] & 0x80);
2095
2096 if (rate > 110)
2097 *have_higher_than_11mbit = true;
2098
2099 /*
2100 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2101 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2102 *
2103 * Note: Even through the membership selector and the basic
2104 * rate flag share the same bit, they are not exactly
2105 * the same.
2106 */
2107 if (!!(supp_rates[i] & 0x80) &&
2108 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2109 continue;
2110
2111 for (j = 0; j < sband->n_bitrates; j++) {
2112 if (sband->bitrates[j].bitrate == rate) {
2113 *rates |= BIT(j);
2114 if (is_basic)
2115 *basic_rates |= BIT(j);
2116 if (rate < *min_rate) {
2117 *min_rate = rate;
2118 *min_rate_index = j;
2119 }
2120 break;
2121 }
2122 }
2123 }
2124}
f0706e82 2125
66e67e41
JB		 2126static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2127 bool assoc)
2128{
2129 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2130
2131 lockdep_assert_held(&sdata->u.mgd.mtx);
2132
66e67e41
JB		 2133 if (!assoc) {
2134 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2135
2136 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2137 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2138 sdata->u.mgd.flags = 0;
55de908a 2139 ieee80211_vif_release_channel(sdata);
66e67e41
JB		 2140 }
2141
2142 kfree(assoc_data);
2143 sdata->u.mgd.assoc_data = NULL;
2144}
2145
2146static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2147 struct cfg80211_bss *cbss,
af6b6374 2148 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2149{
46900298 2150 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2151 struct ieee80211_local *local = sdata->local;
8318d78a 2152 struct ieee80211_supported_band *sband;
f0706e82 2153 struct sta_info *sta;
af6b6374 2154 u8 *pos;
af6b6374 2155 u16 capab_info, aid;
f0706e82 2156 struct ieee802_11_elems elems;
bda3933a 2157 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
ae5eb026 2158 u32 changed = 0;
c74d084f 2159 int err;
f0706e82 2160
af6b6374 2161 /* AssocResp and ReassocResp have identical structure */
f0706e82 2162
f0706e82 2163 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2164 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2165
1dd84aa2 2166 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2167 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2168 aid);
1dd84aa2
JB		 2169 aid &= ~(BIT(15) | BIT(14));
2170
05cb9108
JB		 2171 ifmgd->broken_ap = false;
2172
2173 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2174 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2175 aid);
05cb9108
JB		 2176 aid = 0;
2177 ifmgd->broken_ap = true;
2178 }
2179
af6b6374
JB		 2180 pos = mgmt->u.assoc_resp.variable;
2181 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
2182
f0706e82 2183 if (!elems.supp_rates) {
bdcbd8e0 2184 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2185 return false;
f0706e82
JB		 2186 }
2187
46900298 2188 ifmgd->aid = aid;
f0706e82 2189
2a33bee2
GE		 2190 mutex_lock(&sdata->local->sta_mtx);
2191 /*
2192 * station info was already allocated and inserted before
2193 * the association and should be available to us
2194 */
7852e361 2195 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2196 if (WARN_ON(!sta)) {
2197 mutex_unlock(&sdata->local->sta_mtx);
af6b6374 2198 return false;
77fdaa12 2199 }
05e5e883 2200
55de908a 2201 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2202
a8243b72 2203 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2204 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
d9fe60de 2205 elems.ht_cap_elem, &sta->sta.ht_cap);
ae5eb026 2206
64f68e5d
JB		 2207 sta->supports_40mhz =
2208 sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2209
818255ea
MP		 2210 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2211 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
2212 elems.vht_cap_elem,
2213 &sta->sta.vht_cap);
2214
4b7679a5 2215 rate_control_rate_init(sta);
f0706e82 2216
46900298 2217 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2218 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2219
ddf4ac53 2220 if (elems.wmm_param)
c2c98fde 2221 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2222
c8987876
JB		 2223 err = sta_info_move_state(sta, IEEE80211_STA_AUTH);
2224 if (!err)
2225 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
2226 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2227 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2228 if (err) {
bdcbd8e0
JB		 2229 sdata_info(sdata,
2230 "failed to move station %pM to desired state\n",
2231 sta->sta.addr);
c8987876
JB		 2232 WARN_ON(__sta_info_destroy(sta));
2233 mutex_unlock(&sdata->local->sta_mtx);
2234 return false;
2235 }
2236
7852e361 2237 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2238
f2176d72
JO		 2239 /*
2240 * Always handle WMM once after association regardless
2241 * of the first value the AP uses. Setting -1 here has
2242 * that effect because the AP values is an unsigned
2243 * 4-bit value.
2244 */
2245 ifmgd->wmm_last_param_set = -1;
2246
ddf4ac53 2247 if (elems.wmm_param)
4ced3f74 2248 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2249 elems.wmm_param_len);
aa837e1d 2250 else
3abead59
JB		 2251 ieee80211_set_wmm_default(sdata, false);
2252 changed |= BSS_CHANGED_QOS;
f0706e82 2253
074d46d1 2254 if (elems.ht_operation && elems.wmm_param &&
a8243b72 2255 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
24398e39
JB		 2256 changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
2257 cbss->bssid, false);
ae5eb026 2258
60f8b39c
JB		 2259 /* set AID and assoc capability,
2260 * ieee80211_set_associated() will tell the driver */
2261 bss_conf->aid = aid;
2262 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2263 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2264
d524215f
FF		 2265 /*
2266 * If we're using 4-addr mode, let the AP know that we're
2267 * doing so, so that it can create the STA VLAN on its side
2268 */
2269 if (ifmgd->use_4addr)
2270 ieee80211_send_4addr_nullfunc(local, sdata);
2271
15b7b062 2272 /*
b291ba11
JB		 2273 * Start timer to probe the connection to the AP now.
2274 * Also start the timer that will detect beacon loss.
15b7b062 2275 */
b291ba11 2276 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2277 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2278
af6b6374 2279 return true;
f0706e82
JB		 2280}
2281
66e67e41
JB		 2282static enum rx_mgmt_action __must_check
2283ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2284 struct ieee80211_mgmt *mgmt, size_t len,
2285 struct cfg80211_bss **bss)
2286{
2287 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2288 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2289 u16 capab_info, status_code, aid;
2290 struct ieee802_11_elems elems;
2291 u8 *pos;
2292 bool reassoc;
2293
2294 lockdep_assert_held(&ifmgd->mtx);
2295
2296 if (!assoc_data)
2297 return RX_MGMT_NONE;
b203ca39 2298 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
66e67e41
JB		 2299 return RX_MGMT_NONE;
2300
2301 /*
2302 * AssocResp and ReassocResp have identical structure, so process both
2303 * of them in this function.
2304 */
2305
2306 if (len < 24 + 6)
2307 return RX_MGMT_NONE;
2308
2309 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2310 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2311 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2312 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2313
bdcbd8e0
JB		 2314 sdata_info(sdata,
2315 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2316 reassoc ? "Rea" : "A", mgmt->sa,
2317 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2318
2319 pos = mgmt->u.assoc_resp.variable;
2320 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
2321
2322 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
2323 elems.timeout_int && elems.timeout_int_len == 5 &&
2324 elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
2325 u32 tu, ms;
2326 tu = get_unaligned_le32(elems.timeout_int + 1);
2327 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2328 sdata_info(sdata,
2329 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2330 mgmt->sa, tu, ms);
66e67e41
JB		 2331 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
2332 if (ms > IEEE80211_ASSOC_TIMEOUT)
2333 run_again(ifmgd, assoc_data->timeout);
2334 return RX_MGMT_NONE;
2335 }
2336
2337 *bss = assoc_data->bss;
2338
2339 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2340 sdata_info(sdata, "%pM denied association (code=%d)\n",
2341 mgmt->sa, status_code);
66e67e41
JB		 2342 ieee80211_destroy_assoc_data(sdata, false);
2343 } else {
66e67e41
JB		 2344 if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) {
2345 /* oops -- internal error -- send timeout for now */
10a9109f 2346 ieee80211_destroy_assoc_data(sdata, false);
66e67e41
JB		 2347 cfg80211_put_bss(*bss);
2348 return RX_MGMT_CFG80211_ASSOC_TIMEOUT;
2349 }
635d999f 2350 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2351
2352 /*
2353 * destroy assoc_data afterwards, as otherwise an idle
2354 * recalc after assoc_data is NULL but before associated
2355 * is set can cause the interface to go idle
2356 */
2357 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2358 }
2359
2360 return RX_MGMT_CFG80211_RX_ASSOC;
2361}
98c8fccf
JB		 2362static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
2363 struct ieee80211_mgmt *mgmt,
2364 size_t len,
2365 struct ieee80211_rx_status *rx_status,
2366 struct ieee802_11_elems *elems,
2367 bool beacon)
2368{
2369 struct ieee80211_local *local = sdata->local;
2370 int freq;
c2b13452 2371 struct ieee80211_bss *bss;
98c8fccf 2372 struct ieee80211_channel *channel;
56007a02
JB		 2373 bool need_ps = false;
2374
66e67e41 2375 if (sdata->u.mgd.associated &&
b203ca39 2376 ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) {
56007a02
JB		 2377 bss = (void *)sdata->u.mgd.associated->priv;
2378 /* not previously set so we may need to recalc */
2379 need_ps = !bss->dtim_period;
2380 }
98c8fccf
JB		 2381
2382 if (elems->ds_params && elems->ds_params_len == 1)
59eb21a6
BR		 2383 freq = ieee80211_channel_to_frequency(elems->ds_params[0],
2384 rx_status->band);
98c8fccf
JB		 2385 else
2386 freq = rx_status->freq;
2387
2388 channel = ieee80211_get_channel(local->hw.wiphy, freq);
2389
2390 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
2391 return;
2392
98c8fccf 2393 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
2a519311 2394 channel, beacon);
77fdaa12
JB		 2395 if (bss)
2396 ieee80211_rx_bss_put(local, bss);
2397
2398 if (!sdata->u.mgd.associated)
98c8fccf
JB		 2399 return;
2400
56007a02
JB		 2401 if (need_ps) {
2402 mutex_lock(&local->iflist_mtx);
2403 ieee80211_recalc_ps(local, -1);
2404 mutex_unlock(&local->iflist_mtx);
2405 }
2406
5bc1420b
JB		 2407 if (elems->ch_switch_ie &&
2408 memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)
2409 ieee80211_sta_process_chanswitch(sdata, elems->ch_switch_ie,
5ce6e438 2410 bss, rx_status->mactime);
f0706e82
JB		 2411}
2412
2413
f698d856 2414static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2415 struct sk_buff *skb)
f0706e82 2416{
af6b6374 2417 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2418 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2419 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2420 size_t baselen, len = skb->len;
ae6a44e3
EK		 2421 struct ieee802_11_elems elems;
2422
15b7b062
KV		 2423 ifmgd = &sdata->u.mgd;
2424
77fdaa12
JB		 2425 ASSERT_MGD_MTX(ifmgd);
2426
b203ca39 2427 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2428 return; /* ignore ProbeResp to foreign address */
2429
ae6a44e3
EK		 2430 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2431 if (baselen > len)
2432 return;
2433
2434 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
2435 &elems);
2436
98c8fccf 2437 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
9859b81e 2438
77fdaa12 2439 if (ifmgd->associated &&
b203ca39 2440 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2441 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2442
2443 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2444 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2445 /* got probe response, continue with auth */
bdcbd8e0 2446 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2447 ifmgd->auth_data->tries = 0;
2448 ifmgd->auth_data->timeout = jiffies;
2449 run_again(ifmgd, ifmgd->auth_data->timeout);
2450 }
f0706e82
JB		 2451}
2452
d91f36db
JB		 2453/*
2454 * This is the canonical list of information elements we care about,
2455 * the filter code also gives us all changes to the Microsoft OUI
2456 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2457 *
2458 * We implement beacon filtering in software since that means we can
2459 * avoid processing the frame here and in cfg80211, and userspace
2460 * will not be able to tell whether the hardware supports it or not.
2461 *
2462 * XXX: This list needs to be dynamic -- userspace needs to be able to
2463 * add items it requires. It also needs to be able to tell us to
2464 * look out for other vendor IEs.
2465 */
2466static const u64 care_about_ies =
1d4df3a5
JB		 2467 (1ULL << WLAN_EID_COUNTRY) |
2468 (1ULL << WLAN_EID_ERP_INFO) |
2469 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2470 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2471 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2472 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2473
f698d856 2474static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 2475 struct ieee80211_mgmt *mgmt,
2476 size_t len,
2477 struct ieee80211_rx_status *rx_status)
2478{
d91f36db 2479 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2480 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2481 size_t baselen;
2482 struct ieee802_11_elems elems;
f698d856 2483 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2484 struct ieee80211_chanctx_conf *chanctx_conf;
2485 struct ieee80211_channel *chan;
471b3efd 2486 u32 changed = 0;
f87ad637 2487 bool erp_valid;
7a5158ef 2488 u8 erp_value = 0;
d91f36db 2489 u32 ncrc;
77fdaa12
JB		 2490 u8 *bssid;
2491
66e67e41 2492 lockdep_assert_held(&ifmgd->mtx);
f0706e82 2493
ae6a44e3
EK		 2494 /* Process beacon from the current BSS */
2495 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2496 if (baselen > len)
2497 return;
2498
55de908a
JB		 2499 rcu_read_lock();
2500 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2501 if (!chanctx_conf) {
2502 rcu_read_unlock();
f0706e82 2503 return;
55de908a
JB		 2504 }
2505
4bf88530 2506 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a
JB		 2507 rcu_read_unlock();
2508 return;
2509 }
4bf88530 2510 chan = chanctx_conf->def.chan;
55de908a 2511 rcu_read_unlock();
f0706e82 2512
66e67e41 2513 if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
b203ca39 2514 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41
JB		 2515 ieee802_11_parse_elems(mgmt->u.beacon.variable,
2516 len - baselen, &elems);
77fdaa12 2517
66e67e41
JB		 2518 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
2519 false);
2520 ifmgd->assoc_data->have_beacon = true;
2521 ifmgd->assoc_data->sent_assoc = false;
2522 /* continue assoc process */
2523 ifmgd->assoc_data->timeout = jiffies;
2524 run_again(ifmgd, ifmgd->assoc_data->timeout);
2525 return;
2526 }
77fdaa12 2527
66e67e41 2528 if (!ifmgd->associated ||
b203ca39 2529 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
f0706e82 2530 return;
66e67e41 2531 bssid = ifmgd->associated->bssid;
f0706e82 2532
17e4ec14
JM		 2533 /* Track average RSSI from the Beacon frames of the current AP */
2534 ifmgd->last_beacon_signal = rx_status->signal;
2535 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2536 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2537 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2538 ifmgd->last_cqm_event_signal = 0;
391a200a 2539 ifmgd->count_beacon_signal = 1;
615f7b9b 2540 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2541 } else {
2542 ifmgd->ave_beacon_signal =
2543 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
2544 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
2545 ifmgd->ave_beacon_signal) / 16;
391a200a 2546 ifmgd->count_beacon_signal++;
17e4ec14 2547 }
615f7b9b
MV		 2548
2549 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
2550 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
2551 int sig = ifmgd->ave_beacon_signal;
2552 int last_sig = ifmgd->last_ave_beacon_signal;
2553
2554 /*
2555 * if signal crosses either of the boundaries, invoke callback
2556 * with appropriate parameters
2557 */
2558 if (sig > ifmgd->rssi_max_thold &&
2559 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
2560 ifmgd->last_ave_beacon_signal = sig;
2561 drv_rssi_callback(local, RSSI_EVENT_HIGH);
2562 } else if (sig < ifmgd->rssi_min_thold &&
2563 (last_sig >= ifmgd->rssi_max_thold ||
2564 last_sig == 0)) {
2565 ifmgd->last_ave_beacon_signal = sig;
2566 drv_rssi_callback(local, RSSI_EVENT_LOW);
2567 }
2568 }
2569
17e4ec14 2570 if (bss_conf->cqm_rssi_thold &&
391a200a 2571 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 2572 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 2573 int sig = ifmgd->ave_beacon_signal / 16;
2574 int last_event = ifmgd->last_cqm_event_signal;
2575 int thold = bss_conf->cqm_rssi_thold;
2576 int hyst = bss_conf->cqm_rssi_hyst;
2577 if (sig < thold &&
2578 (last_event == 0 || sig < last_event - hyst)) {
2579 ifmgd->last_cqm_event_signal = sig;
2580 ieee80211_cqm_rssi_notify(
2581 &sdata->vif,
2582 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
2583 GFP_KERNEL);
2584 } else if (sig > thold &&
2585 (last_event == 0 || sig > last_event + hyst)) {
2586 ifmgd->last_cqm_event_signal = sig;
2587 ieee80211_cqm_rssi_notify(
2588 &sdata->vif,
2589 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
2590 GFP_KERNEL);
2591 }
2592 }
2593
b291ba11 2594 if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
bdcbd8e0
JB		 2595 mlme_dbg_ratelimited(sdata,
2596 "cancelling probereq poll due to a received beacon\n");
925e64c3 2597 mutex_lock(&local->mtx);
b291ba11 2598 ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
925e64c3
SG		 2599 ieee80211_run_deferred_scan(local);
2600 mutex_unlock(&local->mtx);
2601
4e751843
JB		 2602 mutex_lock(&local->iflist_mtx);
2603 ieee80211_recalc_ps(local, -1);
2604 mutex_unlock(&local->iflist_mtx);
92778180
JM		 2605 }
2606
b291ba11
JB		 2607 /*
2608 * Push the beacon loss detection into the future since
2609 * we are processing a beacon from the AP just now.
2610 */
d3a910a8 2611 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 2612
d91f36db
JB		 2613 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
2614 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
2615 len - baselen, &elems,
2616 care_about_ies, ncrc);
2617
25c9c875 2618 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 2619 bool directed_tim = ieee80211_check_tim(elems.tim,
2620 elems.tim_len,
2621 ifmgd->aid);
1fb3606b 2622 if (directed_tim) {
572e0012 2623 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 2624 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2625 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2626 ieee80211_hw_config(local,
2627 IEEE80211_CONF_CHANGE_PS);
2628 }
572e0012 2629 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 2630 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 2631 local->pspolling = true;
2632
2633 /*
2634 * Here is assumed that the driver will be
2635 * able to send ps-poll frame and receive a
2636 * response even though power save mode is
2637 * enabled, but some drivers might require
2638 * to disable power save here. This needs
2639 * to be investigated.
2640 */
2641 ieee80211_send_pspoll(local, sdata);
2642 }
a97b77b9
VN		 2643 }
2644 }
7a5158ef 2645
488dd7b5
JB		 2646 if (sdata->vif.p2p) {
2647 u8 noa[2];
2648 int ret;
2649
2650 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
2651 len - baselen,
2652 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
2653 noa, sizeof(noa));
2654 if (ret >= 2 && sdata->u.mgd.p2p_noa_index != noa[0]) {
2655 bss_conf->p2p_oppps = noa[1] & 0x80;
2656 bss_conf->p2p_ctwindow = noa[1] & 0x7f;
2657 changed |= BSS_CHANGED_P2P_PS;
2658 sdata->u.mgd.p2p_noa_index = noa[0];
2659 /*
2660 * make sure we update all information, the CRC
2661 * mechanism doesn't look at P2P attributes.
2662 */
2663 ifmgd->beacon_crc_valid = false;
2664 }
2665 }
2666
d8ec4433 2667 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
30196673
JM		 2668 return;
2669 ifmgd->beacon_crc = ncrc;
d8ec4433 2670 ifmgd->beacon_crc_valid = true;
30196673 2671
7d25745d
JB		 2672 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
2673 true);
2674
2675 if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
2676 elems.wmm_param_len))
2677 changed |= BSS_CHANGED_QOS;
2678
7a5158ef
JB		 2679 if (elems.erp_info && elems.erp_info_len >= 1) {
2680 erp_valid = true;
2681 erp_value = elems.erp_info[0];
2682 } else {
2683 erp_valid = false;
50c4afb9 2684 }
7a5158ef
JB		 2685 changed |= ieee80211_handle_bss_capability(sdata,
2686 le16_to_cpu(mgmt->u.beacon.capab_info),
2687 erp_valid, erp_value);
f0706e82 2688
d3c990fb 2689
074d46d1 2690 if (elems.ht_cap_elem && elems.ht_operation && elems.wmm_param &&
a8243b72 2691 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
24398e39
JB		 2692 changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
2693 bssid, true);
d3c990fb 2694
04b7b2ff
JB		 2695 if (elems.country_elem && elems.pwr_constr_elem &&
2696 mgmt->u.probe_resp.capab_info &
2697 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 2698 changed |= ieee80211_handle_pwr_constr(sdata, chan,
2699 elems.country_elem,
2700 elems.country_elem_len,
2701 elems.pwr_constr_elem);
3f2355cb 2702
471b3efd 2703 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 2704}
2705
1fa57d01
JB		 2706void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
2707 struct sk_buff *skb)
f0706e82 2708{
77fdaa12 2709 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82 2710 struct ieee80211_rx_status *rx_status;
f0706e82 2711 struct ieee80211_mgmt *mgmt;
66e67e41 2712 struct cfg80211_bss *bss = NULL;
77fdaa12 2713 enum rx_mgmt_action rma = RX_MGMT_NONE;
f0706e82
JB		 2714 u16 fc;
2715
f0706e82
JB		 2716 rx_status = (struct ieee80211_rx_status *) skb->cb;
2717 mgmt = (struct ieee80211_mgmt *) skb->data;
2718 fc = le16_to_cpu(mgmt->frame_control);
2719
77fdaa12
JB		 2720 mutex_lock(&ifmgd->mtx);
2721
66e67e41
JB		 2722 switch (fc & IEEE80211_FCTL_STYPE) {
2723 case IEEE80211_STYPE_BEACON:
2724 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
2725 break;
2726 case IEEE80211_STYPE_PROBE_RESP:
2727 ieee80211_rx_mgmt_probe_resp(sdata, skb);
2728 break;
2729 case IEEE80211_STYPE_AUTH:
2730 rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
2731 break;
2732 case IEEE80211_STYPE_DEAUTH:
2733 rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
2734 break;
2735 case IEEE80211_STYPE_DISASSOC:
2736 rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
2737 break;
2738 case IEEE80211_STYPE_ASSOC_RESP:
2739 case IEEE80211_STYPE_REASSOC_RESP:
2740 rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss);
2741 break;
2742 case IEEE80211_STYPE_ACTION:
2743 switch (mgmt->u.action.category) {
2744 case WLAN_CATEGORY_SPECTRUM_MGMT:
2745 ieee80211_sta_process_chanswitch(sdata,
2746 &mgmt->u.action.u.chan_switch.sw_elem,
2747 (void *)ifmgd->associated->priv,
2748 rx_status->mactime);
77fdaa12 2749 break;
77fdaa12 2750 }
77fdaa12 2751 }
77fdaa12
JB		 2752 mutex_unlock(&ifmgd->mtx);
2753
66e67e41
JB		 2754 switch (rma) {
2755 case RX_MGMT_NONE:
2756 /* no action */
2757 break;
2758 case RX_MGMT_CFG80211_DEAUTH:
ce470613 2759 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
66e67e41
JB		 2760 break;
2761 case RX_MGMT_CFG80211_DISASSOC:
2762 cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
2763 break;
2764 case RX_MGMT_CFG80211_RX_AUTH:
2765 cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len);
2766 break;
2767 case RX_MGMT_CFG80211_RX_ASSOC:
2768 cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len);
2769 break;
2770 case RX_MGMT_CFG80211_ASSOC_TIMEOUT:
2771 cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid);
2772 break;
2773 default:
2774 WARN(1, "unexpected: %d", rma);
b054b747 2775 }
f0706e82
JB		 2776}
2777
9c6bd790 2778static void ieee80211_sta_timer(unsigned long data)
f0706e82 2779{
60f8b39c
JB		 2780 struct ieee80211_sub_if_data *sdata =
2781 (struct ieee80211_sub_if_data *) data;
46900298 2782 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
60f8b39c 2783 struct ieee80211_local *local = sdata->local;
f0706e82 2784
5bb644a0
JB		 2785 if (local->quiescing) {
2786 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
2787 return;
2788 }
2789
64592c8f 2790 ieee80211_queue_work(&local->hw, &sdata->work);
f0706e82
JB		 2791}
2792
04ac3c0e 2793static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
95acac61 2794 u8 *bssid, u8 reason)
04ac3c0e
FF		 2795{
2796 struct ieee80211_local *local = sdata->local;
2797 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2798 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 2799
37ad3888
JB		 2800 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
2801 false, frame_buf);
04ac3c0e 2802 mutex_unlock(&ifmgd->mtx);
37ad3888 2803
04ac3c0e
FF		 2804 /*
2805 * must be outside lock due to cfg80211,
2806 * but that's not a problem.
2807 */
6ae16775 2808 cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
fcac4fb0
FF		 2809
2810 mutex_lock(&local->mtx);
2811 ieee80211_recalc_idle(local);
2812 mutex_unlock(&local->mtx);
2813
04ac3c0e
FF		 2814 mutex_lock(&ifmgd->mtx);
2815}
2816
66e67e41
JB		 2817static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
2818{
2819 struct ieee80211_local *local = sdata->local;
2820 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2821 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
2822
2823 lockdep_assert_held(&ifmgd->mtx);
2824
2825 if (WARN_ON_ONCE(!auth_data))
2826 return -EINVAL;
2827
66e67e41
JB		 2828 auth_data->tries++;
2829
2830 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 2831 sdata_info(sdata, "authentication with %pM timed out\n",
2832 auth_data->bss->bssid);
66e67e41
JB		 2833
2834 /*
2835 * Most likely AP is not in the range so remove the
2836 * bss struct for that AP.
2837 */
2838 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
2839
2840 return -ETIMEDOUT;
2841 }
2842
a1845fc7
JB		 2843 drv_mgd_prepare_tx(local, sdata);
2844
66e67e41 2845 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 2846 u16 trans = 1;
2847 u16 status = 0;
2848
bdcbd8e0
JB		 2849 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
2850 auth_data->bss->bssid, auth_data->tries,
2851 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 2852
2853 auth_data->expected_transaction = 2;
6b8ece3a
JM		 2854
2855 if (auth_data->algorithm == WLAN_AUTH_SAE) {
2856 trans = auth_data->sae_trans;
2857 status = auth_data->sae_status;
2858 auth_data->expected_transaction = trans;
2859 }
2860
2861 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
2862 auth_data->data, auth_data->data_len,
66e67e41
JB		 2863 auth_data->bss->bssid,
2864 auth_data->bss->bssid, NULL, 0, 0);
2865 } else {
2866 const u8 *ssidie;
2867
bdcbd8e0
JB		 2868 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
2869 auth_data->bss->bssid, auth_data->tries,
2870 IEEE80211_AUTH_MAX_TRIES);
66e67e41 2871
9caf0364 2872 rcu_read_lock();
66e67e41 2873 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 2874 if (!ssidie) {
2875 rcu_read_unlock();
66e67e41 2876 return -EINVAL;
9caf0364 2877 }
66e67e41
JB		 2878 /*
2879 * Direct probe is sent to broadcast address as some APs
2880 * will not answer to direct packet in unassociated state.
2881 */
2882 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
fe94fe05 2883 NULL, 0, (u32) -1, true, false,
55de908a 2884 auth_data->bss->channel, false);
9caf0364 2885 rcu_read_unlock();
66e67e41
JB		 2886 }
2887
2888 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
2889 run_again(ifmgd, auth_data->timeout);
2890
2891 return 0;
2892}
2893
2894static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
2895{
2896 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2897 struct ieee80211_local *local = sdata->local;
2898
2899 lockdep_assert_held(&sdata->u.mgd.mtx);
2900
66e67e41
JB		 2901 assoc_data->tries++;
2902 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 2903 sdata_info(sdata, "association with %pM timed out\n",
2904 assoc_data->bss->bssid);
66e67e41
JB		 2905
2906 /*
2907 * Most likely AP is not in the range so remove the
2908 * bss struct for that AP.
2909 */
2910 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
2911
2912 return -ETIMEDOUT;
2913 }
2914
bdcbd8e0
JB		 2915 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
2916 assoc_data->bss->bssid, assoc_data->tries,
2917 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 2918 ieee80211_send_assoc(sdata);
2919
2920 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
2921 run_again(&sdata->u.mgd, assoc_data->timeout);
2922
2923 return 0;
2924}
2925
1fa57d01 2926void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 2927{
9c6bd790 2928 struct ieee80211_local *local = sdata->local;
1fa57d01 2929 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 2930
77fdaa12
JB		 2931 mutex_lock(&ifmgd->mtx);
2932
66e67e41
JB		 2933 if (ifmgd->auth_data &&
2934 time_after(jiffies, ifmgd->auth_data->timeout)) {
2935 if (ifmgd->auth_data->done) {
2936 /*
2937 * ok ... we waited for assoc but userspace didn't,
2938 * so let's just kill the auth data
2939 */
2940 ieee80211_destroy_auth_data(sdata, false);
2941 } else if (ieee80211_probe_auth(sdata)) {
2942 u8 bssid[ETH_ALEN];
2943
2944 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2945
2946 ieee80211_destroy_auth_data(sdata, false);
2947
2948 mutex_unlock(&ifmgd->mtx);
2949 cfg80211_send_auth_timeout(sdata->dev, bssid);
2950 mutex_lock(&ifmgd->mtx);
2951 }
2952 } else if (ifmgd->auth_data)
2953 run_again(ifmgd, ifmgd->auth_data->timeout);
2954
2955 if (ifmgd->assoc_data &&
2956 time_after(jiffies, ifmgd->assoc_data->timeout)) {
2957 if (!ifmgd->assoc_data->have_beacon ||
2958 ieee80211_do_assoc(sdata)) {
2959 u8 bssid[ETH_ALEN];
2960
2961 memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN);
2962
2963 ieee80211_destroy_assoc_data(sdata, false);
2964
2965 mutex_unlock(&ifmgd->mtx);
2966 cfg80211_send_assoc_timeout(sdata->dev, bssid);
2967 mutex_lock(&ifmgd->mtx);
2968 }
2969 } else if (ifmgd->assoc_data)
2970 run_again(ifmgd, ifmgd->assoc_data->timeout);
2971
b291ba11
JB		 2972 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
2973 IEEE80211_STA_CONNECTION_POLL) &&
2974 ifmgd->associated) {
a43abf29 2975 u8 bssid[ETH_ALEN];
72a8a3ed 2976 int max_tries;
a43abf29 2977
0c1ad2ca 2978 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 2979
72a8a3ed 2980 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 2981 max_tries = max_nullfunc_tries;
72a8a3ed 2982 else
180205bd 2983 max_tries = max_probe_tries;
72a8a3ed 2984
4e5ff376
FF		 2985 /* ACK received for nullfunc probing frame */
2986 if (!ifmgd->probe_send_count)
2987 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 2988 else if (ifmgd->nullfunc_failed) {
2989 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 2990 mlme_dbg(sdata,
2991 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
2992 bssid, ifmgd->probe_send_count,
2993 max_tries);
04ac3c0e
FF		 2994 ieee80211_mgd_probe_ap_send(sdata);
2995 } else {
bdcbd8e0
JB		 2996 mlme_dbg(sdata,
2997 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
2998 bssid);
95acac61
JB		 2999 ieee80211_sta_connection_lost(sdata, bssid,
3000 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
04ac3c0e
FF		 3001 }
3002 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
b291ba11 3003 run_again(ifmgd, ifmgd->probe_timeout);
04ac3c0e 3004 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3005 mlme_dbg(sdata,
3006 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3007 bssid, probe_wait_ms);
95acac61
JB		 3008 ieee80211_sta_connection_lost(sdata, bssid,
3009 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
04ac3c0e 3010 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3011 mlme_dbg(sdata,
3012 "No probe response from AP %pM after %dms, try %d/%i\n",
3013 bssid, probe_wait_ms,
3014 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3015 ieee80211_mgd_probe_ap_send(sdata);
3016 } else {
b291ba11
JB		 3017 /*
3018 * We actually lost the connection ... or did we?
3019 * Let's make sure!
3020 */
b38afa87
BG		 3021 wiphy_debug(local->hw.wiphy,
3022 "%s: No probe response from AP %pM"
3023 " after %dms, disconnecting.\n",
3024 sdata->name,
180205bd 3025 bssid, probe_wait_ms);
04ac3c0e 3026
95acac61
JB		 3027 ieee80211_sta_connection_lost(sdata, bssid,
3028 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
b291ba11
JB		 3029 }
3030 }
3031
77fdaa12 3032 mutex_unlock(&ifmgd->mtx);
66e67e41
JB		 3033
3034 mutex_lock(&local->mtx);
3035 ieee80211_recalc_idle(local);
3036 mutex_unlock(&local->mtx);
f0706e82
JB		 3037}
3038
b291ba11
JB		 3039static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3040{
3041 struct ieee80211_sub_if_data *sdata =
3042 (struct ieee80211_sub_if_data *) data;
3043 struct ieee80211_local *local = sdata->local;
3044
3045 if (local->quiescing)
3046 return;
3047
1e4dcd01
JO		 3048 ieee80211_queue_work(&sdata->local->hw,
3049 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3050}
3051
3052static void ieee80211_sta_conn_mon_timer(unsigned long data)
3053{
3054 struct ieee80211_sub_if_data *sdata =
3055 (struct ieee80211_sub_if_data *) data;
3056 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3057 struct ieee80211_local *local = sdata->local;
3058
3059 if (local->quiescing)
3060 return;
3061
42935eca 3062 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3063}
3064
3065static void ieee80211_sta_monitor_work(struct work_struct *work)
3066{
3067 struct ieee80211_sub_if_data *sdata =
3068 container_of(work, struct ieee80211_sub_if_data,
3069 u.mgd.monitor_work);
3070
3071 ieee80211_mgd_probe_ap(sdata, false);
3072}
3073
9c6bd790
JB		 3074static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3075{
494f1fe5
EP		 3076 u32 flags;
3077
ad935687 3078 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3079 __ieee80211_stop_poll(sdata);
ad935687 3080
b291ba11 3081 /* let's probe the connection once */
494f1fe5
EP		 3082 flags = sdata->local->hw.flags;
3083 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3084 ieee80211_queue_work(&sdata->local->hw,
3085 &sdata->u.mgd.monitor_work);
b291ba11 3086 /* and do all the other regular work too */
64592c8f 3087 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3088 }
9c6bd790 3089}
f0706e82 3090
5bb644a0
JB		 3091#ifdef CONFIG_PM
3092void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
3093{
3094 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3095
3096 /*
3097 * we need to use atomic bitops for the running bits
3098 * only because both timers might fire at the same
3099 * time -- the code here is properly synchronised.
3100 */
3101
d1f5b7a3
JB		 3102 cancel_work_sync(&ifmgd->request_smps_work);
3103
0ecfe806 3104 cancel_work_sync(&ifmgd->monitor_work);
1e4dcd01 3105 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
882a7c69 3106 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5bb644a0
JB		 3107 if (del_timer_sync(&ifmgd->timer))
3108 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
3109
3110 cancel_work_sync(&ifmgd->chswitch_work);
3111 if (del_timer_sync(&ifmgd->chswitch_timer))
3112 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
b291ba11 3113
b291ba11
JB		 3114 /* these will just be re-established on connection */
3115 del_timer_sync(&ifmgd->conn_mon_timer);
3116 del_timer_sync(&ifmgd->bcn_mon_timer);
5bb644a0
JB		 3117}
3118
3119void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3120{
3121 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3122
676b58c2
RM		 3123 if (!ifmgd->associated)
3124 return;
3125
95acac61
JB		 3126 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3127 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3128 mutex_lock(&ifmgd->mtx);
3129 if (ifmgd->associated) {
bdcbd8e0
JB		 3130 mlme_dbg(sdata,
3131 "driver requested disconnect after resume\n");
95acac61
JB		 3132 ieee80211_sta_connection_lost(sdata,
3133 ifmgd->associated->bssid,
3134 WLAN_REASON_UNSPECIFIED);
3135 mutex_unlock(&ifmgd->mtx);
3136 return;
3137 }
3138 mutex_unlock(&ifmgd->mtx);
3139 }
3140
5bb644a0
JB		 3141 if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running))
3142 add_timer(&ifmgd->timer);
3143 if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))
3144 add_timer(&ifmgd->chswitch_timer);
c8a7972c 3145 ieee80211_sta_reset_beacon_monitor(sdata);
925e64c3
SG		 3146
3147 mutex_lock(&sdata->local->mtx);
46090979 3148 ieee80211_restart_sta_timer(sdata);
925e64c3 3149 mutex_unlock(&sdata->local->mtx);
5bb644a0
JB		 3150}
3151#endif
3152
9c6bd790
JB		 3153/* interface setup */
3154void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3155{
46900298 3156 struct ieee80211_if_managed *ifmgd;
988c0f72 3157
46900298 3158 ifmgd = &sdata->u.mgd;
b291ba11 3159 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3160 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3161 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3162 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3163 INIT_WORK(&ifmgd->csa_connection_drop_work,
3164 ieee80211_csa_connection_drop_work);
d1f5b7a3 3165 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
46900298 3166 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3167 (unsigned long) sdata);
b291ba11
JB		 3168 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3169 (unsigned long) sdata);
3170 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3171 (unsigned long) sdata);
46900298 3172 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3173 (unsigned long) sdata);
9c6bd790 3174
ab1faead 3175 ifmgd->flags = 0;
1478acb3 3176 ifmgd->powersave = sdata->wdev.ps;
dc41e4d4
EP		 3177 ifmgd->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
3178 ifmgd->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
bbbdff9e 3179
77fdaa12 3180 mutex_init(&ifmgd->mtx);
0f78231b
JB		 3181
3182 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3183 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3184 else
3185 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3186}
3187
77fdaa12
JB		 3188/* scan finished notification */
3189void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3190{
31ee67a1 3191 struct ieee80211_sub_if_data *sdata;
60f8b39c 3192
77fdaa12
JB		 3193 /* Restart STA timers */
3194 rcu_read_lock();
3195 list_for_each_entry_rcu(sdata, &local->interfaces, list)
3196 ieee80211_restart_sta_timer(sdata);
3197 rcu_read_unlock();
3198}
60f8b39c 3199
77fdaa12
JB		 3200int ieee80211_max_network_latency(struct notifier_block *nb,
3201 unsigned long data, void *dummy)
3202{
3203 s32 latency_usec = (s32) data;
3204 struct ieee80211_local *local =
3205 container_of(nb, struct ieee80211_local,
3206 network_latency_notifier);
1fa6f4af 3207
77fdaa12
JB		 3208 mutex_lock(&local->iflist_mtx);
3209 ieee80211_recalc_ps(local, latency_usec);
3210 mutex_unlock(&local->iflist_mtx);
dfe67012 3211
77fdaa12 3212 return 0;
9c6bd790
JB		 3213}
3214
f2d9d270
JB		 3215static u32 chandef_downgrade(struct cfg80211_chan_def *c)
3216{
3217 u32 ret;
3218 int tmp;
3219
3220 switch (c->width) {
3221 case NL80211_CHAN_WIDTH_20:
3222 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3223 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3224 break;
3225 case NL80211_CHAN_WIDTH_40:
3226 c->width = NL80211_CHAN_WIDTH_20;
3227 c->center_freq1 = c->chan->center_freq;
3228 ret = IEEE80211_STA_DISABLE_40MHZ |
3229 IEEE80211_STA_DISABLE_VHT;
3230 break;
3231 case NL80211_CHAN_WIDTH_80:
3232 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3233 /* n_P40 */
3234 tmp /= 2;
3235 /* freq_P40 */
3236 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3237 c->width = NL80211_CHAN_WIDTH_40;
3238 ret = IEEE80211_STA_DISABLE_VHT;
3239 break;
3240 case NL80211_CHAN_WIDTH_80P80:
3241 c->center_freq2 = 0;
3242 c->width = NL80211_CHAN_WIDTH_80;
3243 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3244 IEEE80211_STA_DISABLE_160MHZ;
3245 break;
3246 case NL80211_CHAN_WIDTH_160:
3247 /* n_P20 */
3248 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3249 /* n_P80 */
3250 tmp /= 4;
3251 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3252 c->width = NL80211_CHAN_WIDTH_80;
3253 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3254 IEEE80211_STA_DISABLE_160MHZ;
3255 break;
3256 default:
3257 case NL80211_CHAN_WIDTH_20_NOHT:
3258 WARN_ON_ONCE(1);
3259 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3260 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3261 break;
3262 }
3263
3264 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3265
3266 return ret;
3267}
3268
3269static u32
3270ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
3271 struct ieee80211_supported_band *sband,
3272 struct ieee80211_channel *channel,
3273 const struct ieee80211_ht_operation *ht_oper,
3274 const struct ieee80211_vht_operation *vht_oper,
3275 struct cfg80211_chan_def *chandef)
3276{
3277 struct cfg80211_chan_def vht_chandef;
3278 u32 ht_cfreq, ret;
3279
3280 chandef->chan = channel;
3281 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3282 chandef->center_freq1 = channel->center_freq;
3283 chandef->center_freq2 = 0;
3284
3285 if (!ht_oper || !sband->ht_cap.ht_supported) {
3286 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3287 goto out;
3288 }
3289
3290 chandef->width = NL80211_CHAN_WIDTH_20;
3291
3292 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
3293 channel->band);
3294 /* check that channel matches the right operating channel */
3295 if (channel->center_freq != ht_cfreq) {
3296 /*
3297 * It's possible that some APs are confused here;
3298 * Netgear WNDR3700 sometimes reports 4 higher than
3299 * the actual channel in association responses, but
3300 * since we look at probe response/beacon data here
3301 * it should be OK.
3302 */
3303 sdata_info(sdata,
3304 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
3305 channel->center_freq, ht_cfreq,
3306 ht_oper->primary_chan, channel->band);
3307 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3308 goto out;
3309 }
3310
3311 /* check 40 MHz support, if we have it */
3312 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
3313 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3314 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3315 chandef->width = NL80211_CHAN_WIDTH_40;
3316 chandef->center_freq1 += 10;
3317 break;
3318 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3319 chandef->width = NL80211_CHAN_WIDTH_40;
3320 chandef->center_freq1 -= 10;
3321 break;
3322 }
3323 } else {
3324 /* 40 MHz (and 80 MHz) must be supported for VHT */
3325 ret = IEEE80211_STA_DISABLE_VHT;
3326 goto out;
3327 }
3328
3329 if (!vht_oper || !sband->vht_cap.vht_supported) {
3330 ret = IEEE80211_STA_DISABLE_VHT;
3331 goto out;
3332 }
3333
3334 vht_chandef.chan = channel;
3335 vht_chandef.center_freq1 =
3336 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
3337 channel->band);
3338 vht_chandef.center_freq2 = 0;
3339
3340 if (vht_oper->center_freq_seg2_idx)
3341 vht_chandef.center_freq2 =
3342 ieee80211_channel_to_frequency(
3343 vht_oper->center_freq_seg2_idx,
3344 channel->band);
3345
3346 switch (vht_oper->chan_width) {
3347 case IEEE80211_VHT_CHANWIDTH_USE_HT:
3348 vht_chandef.width = chandef->width;
3349 break;
3350 case IEEE80211_VHT_CHANWIDTH_80MHZ:
3351 vht_chandef.width = NL80211_CHAN_WIDTH_80;
3352 break;
3353 case IEEE80211_VHT_CHANWIDTH_160MHZ:
3354 vht_chandef.width = NL80211_CHAN_WIDTH_160;
3355 break;
3356 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3357 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
3358 break;
3359 default:
3360 sdata_info(sdata,
3361 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
3362 vht_oper->chan_width);
3363 ret = IEEE80211_STA_DISABLE_VHT;
3364 goto out;
3365 }
3366
3367 if (!cfg80211_chandef_valid(&vht_chandef)) {
3368 sdata_info(sdata,
3369 "AP VHT information is invalid, disable VHT\n");
3370 ret = IEEE80211_STA_DISABLE_VHT;
3371 goto out;
3372 }
3373
3374 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
3375 ret = 0;
3376 goto out;
3377 }
3378
3379 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
3380 sdata_info(sdata,
3381 "AP VHT information doesn't match HT, disable VHT\n");
3382 ret = IEEE80211_STA_DISABLE_VHT;
3383 goto out;
3384 }
3385
3386 *chandef = vht_chandef;
3387
3388 ret = 0;
3389
3390 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
3391 IEEE80211_CHAN_DISABLED)) {
3392 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
3393 ret = IEEE80211_STA_DISABLE_HT |
3394 IEEE80211_STA_DISABLE_VHT;
3395 goto out;
3396 }
3397
3398 ret = chandef_downgrade(chandef);
3399 }
3400
3401 if (chandef->width != vht_chandef.width)
3402 sdata_info(sdata,
3403 "local regulatory prevented using AP HT/VHT configuration, downgraded\n");
3404
3405out:
3406 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
3407 return ret;
3408}
3409
3410static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3411 struct cfg80211_bss *cbss)
3412{
3413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3414 const u8 *ht_cap_ie, *vht_cap_ie;
3415 const struct ieee80211_ht_cap *ht_cap;
3416 const struct ieee80211_vht_cap *vht_cap;
3417 u8 chains = 1;
3418
3419 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3420 return chains;
3421
9caf0364 3422 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3423 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3424 ht_cap = (void *)(ht_cap_ie + 2);
3425 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3426 /*
3427 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3428 * "Tx Unequal Modulation Supported" fields.
3429 */
3430 }
3431
3432 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3433 return chains;
3434
9caf0364 3435 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3436 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3437 u8 nss;
3438 u16 tx_mcs_map;
3439
3440 vht_cap = (void *)(vht_cap_ie + 2);
3441 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3442 for (nss = 8; nss > 0; nss--) {
3443 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3444 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3445 break;
3446 }
3447 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3448 chains = max(chains, nss);
3449 }
3450
3451 return chains;
3452}
3453
b17166a7
JB		 3454static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3455 struct cfg80211_bss *cbss)
a1cf775d
JB		 3456{
3457 struct ieee80211_local *local = sdata->local;
3458 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3459 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3460 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3461 struct ieee80211_supported_band *sband;
4bf88530 3462 struct cfg80211_chan_def chandef;
f2d9d270 3463 int ret;
a1cf775d 3464
24398e39
JB		 3465 sband = local->hw.wiphy->bands[cbss->channel->band];
3466
f2d9d270
JB		 3467 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3468 IEEE80211_STA_DISABLE_80P80MHZ |
3469 IEEE80211_STA_DISABLE_160MHZ);
3470
9caf0364
JB		 3471 rcu_read_lock();
3472
f2d9d270
JB		 3473 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3474 sband->ht_cap.ht_supported) {
3475 const u8 *ht_oper_ie;
24398e39 3476
9caf0364 3477 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3478 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3479 ht_oper = (void *)(ht_oper_ie + 2);
3480 }
3481
f2d9d270
JB		 3482 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3483 sband->vht_cap.vht_supported) {
3484 const u8 *vht_oper_ie;
3485
9caf0364
JB		 3486 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3487 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3488 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3489 vht_oper = (void *)(vht_oper_ie + 2);
3490 if (vht_oper && !ht_oper) {
3491 vht_oper = NULL;
bdcbd8e0 3492 sdata_info(sdata,
f2d9d270
JB		 3493 "AP advertised VHT without HT, disabling both\n");
3494 sdata->flags |= IEEE80211_STA_DISABLE_HT;
3495 sdata->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39
JB		 3496 }
3497 }
3498
f2d9d270
JB		 3499 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3500 cbss->channel,
3501 ht_oper, vht_oper,
3502 &chandef);
04ecd257 3503
f2d9d270
JB		 3504 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3505 local->rx_chains);
24398e39 3506
9caf0364
JB		 3507 rcu_read_unlock();
3508
04ecd257
JB		 3509 /* will change later if needed */
3510 sdata->smps_mode = IEEE80211_SMPS_OFF;
3511
f2d9d270
JB		 3512 /*
3513 * If this fails (possibly due to channel context sharing
3514 * on incompatible channels, e.g. 80+80 and 160 sharing the
3515 * same control channel) try to use a smaller bandwidth.
3516 */
3517 ret = ieee80211_vif_use_channel(sdata, &chandef,
3518 IEEE80211_CHANCTX_SHARED);
3519 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
3520 ifmgd->flags |= chandef_downgrade(&chandef);
3521 return ret;
b17166a7
JB		 3522}
3523
3524static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3525 struct cfg80211_bss *cbss, bool assoc)
3526{
3527 struct ieee80211_local *local = sdata->local;
3528 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3529 struct ieee80211_bss *bss = (void *)cbss->priv;
3530 struct sta_info *new_sta = NULL;
3531 bool have_sta = false;
3532 int err;
3533
3534 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3535 return -EINVAL;
3536
3537 if (assoc) {
3538 rcu_read_lock();
3539 have_sta = sta_info_get(sdata, cbss->bssid);
3540 rcu_read_unlock();
3541 }
3542
3543 if (!have_sta) {
3544 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3545 if (!new_sta)
3546 return -ENOMEM;
3547 }
3548
3549 mutex_lock(&local->mtx);
3550 ieee80211_recalc_idle(sdata->local);
3551 mutex_unlock(&local->mtx);
3552
13e0c8e3 3553 if (new_sta) {
5d6a1b06
JB		 3554 u32 rates = 0, basic_rates = 0;
3555 bool have_higher_than_11mbit;
3556 int min_rate = INT_MAX, min_rate_index = -1;
b17166a7
JB		 3557 struct ieee80211_supported_band *sband;
3558
3559 sband = local->hw.wiphy->bands[cbss->channel->band];
3560
3561 err = ieee80211_prep_channel(sdata, cbss);
3562 if (err) {
3563 sta_info_free(local, new_sta);
3564 return err;
3565 }
5d6a1b06 3566
5d6a1b06
JB		 3567 ieee80211_get_rates(sband, bss->supp_rates,
3568 bss->supp_rates_len,
3569 &rates, &basic_rates,
3570 &have_higher_than_11mbit,
3571 &min_rate, &min_rate_index);
3572
3573 /*
3574 * This used to be a workaround for basic rates missing
3575 * in the association response frame. Now that we no
3576 * longer use the basic rates from there, it probably
3577 * doesn't happen any more, but keep the workaround so
3578 * in case some *other* APs are buggy in different ways
3579 * we can connect -- with a warning.
3580 */
3581 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3582 sdata_info(sdata,
3583 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3584 basic_rates = BIT(min_rate_index);
3585 }
3586
13e0c8e3 3587 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3588 sdata->vif.bss_conf.basic_rates = basic_rates;
3589
3590 /* cf. IEEE 802.11 9.2.12 */
55de908a 3591 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3592 have_higher_than_11mbit)
3593 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3594 else
3595 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3596
3597 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3598
8c358bcd
JB		 3599 /* set timing information */
3600 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
3601 sdata->vif.bss_conf.sync_tsf = cbss->tsf;
3602 sdata->vif.bss_conf.sync_device_ts = bss->device_ts;
3603
3604 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 3605 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 3606 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
3607 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 3608
3609 if (assoc)
13e0c8e3 3610 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 3611
13e0c8e3
JB		 3612 err = sta_info_insert(new_sta);
3613 new_sta = NULL;
a1cf775d 3614 if (err) {
bdcbd8e0
JB		 3615 sdata_info(sdata,
3616 "failed to insert STA entry for the AP (error %d)\n",
3617 err);
a1cf775d
JB		 3618 return err;
3619 }
3620 } else
b203ca39 3621 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 3622
3623 return 0;
3624}
3625
77fdaa12
JB		 3626/* config hooks */
3627int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
3628 struct cfg80211_auth_request *req)
9c6bd790 3629{
66e67e41
JB		 3630 struct ieee80211_local *local = sdata->local;
3631 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3632 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 3633 u16 auth_alg;
66e67e41
JB		 3634 int err;
3635
3636 /* prepare auth data structure */
9c6bd790 3637
77fdaa12
JB		 3638 switch (req->auth_type) {
3639 case NL80211_AUTHTYPE_OPEN_SYSTEM:
3640 auth_alg = WLAN_AUTH_OPEN;
3641 break;
3642 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 3643 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 3644 return -EOPNOTSUPP;
77fdaa12
JB		 3645 auth_alg = WLAN_AUTH_SHARED_KEY;
3646 break;
3647 case NL80211_AUTHTYPE_FT:
3648 auth_alg = WLAN_AUTH_FT;
3649 break;
3650 case NL80211_AUTHTYPE_NETWORK_EAP:
3651 auth_alg = WLAN_AUTH_LEAP;
3652 break;
6b8ece3a
JM		 3653 case NL80211_AUTHTYPE_SAE:
3654 auth_alg = WLAN_AUTH_SAE;
3655 break;
77fdaa12
JB		 3656 default:
3657 return -EOPNOTSUPP;
60f8b39c 3658 }
77fdaa12 3659
6b8ece3a
JM		 3660 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
3661 req->ie_len, GFP_KERNEL);
66e67e41 3662 if (!auth_data)
9c6bd790 3663 return -ENOMEM;
77fdaa12 3664
66e67e41 3665 auth_data->bss = req->bss;
77fdaa12 3666
6b8ece3a
JM		 3667 if (req->sae_data_len >= 4) {
3668 __le16 *pos = (__le16 *) req->sae_data;
3669 auth_data->sae_trans = le16_to_cpu(pos[0]);
3670 auth_data->sae_status = le16_to_cpu(pos[1]);
3671 memcpy(auth_data->data, req->sae_data + 4,
3672 req->sae_data_len - 4);
3673 auth_data->data_len += req->sae_data_len - 4;
3674 }
3675
77fdaa12 3676 if (req->ie && req->ie_len) {
6b8ece3a
JM		 3677 memcpy(&auth_data->data[auth_data->data_len],
3678 req->ie, req->ie_len);
3679 auth_data->data_len += req->ie_len;
9c6bd790 3680 }
77fdaa12 3681
fffd0934 3682 if (req->key && req->key_len) {
66e67e41
JB		 3683 auth_data->key_len = req->key_len;
3684 auth_data->key_idx = req->key_idx;
3685 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 3686 }
3687
66e67e41 3688 auth_data->algorithm = auth_alg;
60f8b39c 3689
66e67e41 3690 /* try to authenticate/probe */
2a33bee2 3691
66e67e41 3692 mutex_lock(&ifmgd->mtx);
2a33bee2 3693
66e67e41
JB		 3694 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
3695 ifmgd->assoc_data) {
3696 err = -EBUSY;
3697 goto err_free;
2a33bee2
GE		 3698 }
3699
66e67e41
JB		 3700 if (ifmgd->auth_data)
3701 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 3702
66e67e41
JB		 3703 /* prep auth_data so we don't go into idle on disassoc */
3704 ifmgd->auth_data = auth_data;
af6b6374 3705
66e67e41 3706 if (ifmgd->associated)
37ad3888 3707 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
af6b6374 3708
bdcbd8e0 3709 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 3710
a1cf775d
JB		 3711 err = ieee80211_prep_connection(sdata, req->bss, false);
3712 if (err)
66e67e41 3713 goto err_clear;
af6b6374 3714
66e67e41
JB		 3715 err = ieee80211_probe_auth(sdata);
3716 if (err) {
66e67e41
JB		 3717 sta_info_destroy_addr(sdata, req->bss->bssid);
3718 goto err_clear;
3719 }
3720
3721 /* hold our own reference */
3722 cfg80211_ref_bss(auth_data->bss);
3723 err = 0;
3724 goto out_unlock;
3725
3726 err_clear:
3d2abdfd
EP		 3727 memset(ifmgd->bssid, 0, ETH_ALEN);
3728 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 3729 ifmgd->auth_data = NULL;
3730 err_free:
3731 kfree(auth_data);
3732 out_unlock:
3733 mutex_unlock(&ifmgd->mtx);
b2abb6e2 3734
66e67e41 3735 return err;
af6b6374
JB		 3736}
3737
77fdaa12
JB		 3738int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
3739 struct cfg80211_assoc_request *req)
f0706e82 3740{
66e67e41 3741 struct ieee80211_local *local = sdata->local;
77fdaa12 3742 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 3743 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 3744 struct ieee80211_mgd_assoc_data *assoc_data;
4e74bfdb 3745 struct ieee80211_supported_band *sband;
9dde6423 3746 const u8 *ssidie, *ht_ie;
2a33bee2 3747 int i, err;
f0706e82 3748
66e67e41
JB		 3749 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
3750 if (!assoc_data)
3751 return -ENOMEM;
3752
9caf0364
JB		 3753 rcu_read_lock();
3754 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
3755 if (!ssidie) {
3756 rcu_read_unlock();
3757 kfree(assoc_data);
3758 return -EINVAL;
3759 }
3760 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
3761 assoc_data->ssid_len = ssidie[1];
3762 rcu_read_unlock();
3763
77fdaa12 3764 mutex_lock(&ifmgd->mtx);
9c87ba67 3765
66e67e41 3766 if (ifmgd->associated)
37ad3888 3767 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
66e67e41
JB		 3768
3769 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
3770 err = -EBUSY;
3771 goto err_free;
af6b6374 3772 }
77fdaa12 3773
66e67e41
JB		 3774 if (ifmgd->assoc_data) {
3775 err = -EBUSY;
3776 goto err_free;
3777 }
77fdaa12 3778
66e67e41
JB		 3779 if (ifmgd->auth_data) {
3780 bool match;
3781
3782 /* keep sta info, bssid if matching */
b203ca39 3783 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 3784 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 3785 }
3786
66e67e41 3787 /* prepare assoc data */
19c3b830 3788
d8ec4433
JO		 3789 ifmgd->beacon_crc_valid = false;
3790
de5036aa
JB		 3791 /*
3792 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
3793 * We still associate in non-HT mode (11a/b/g) if any one of these
3794 * ciphers is configured as pairwise.
3795 * We can set this to true for non-11n hardware, that'll be checked
3796 * separately along with the peer capabilities.
3797 */
1c4cb928 3798 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 3799 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
3800 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 3801 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 3802 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 3803 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 3804 netdev_info(sdata->dev,
d545daba 3805 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 3806 }
3807 }
77fdaa12 3808
d545daba 3809 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 3810 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 3811 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3812 }
ef96a842 3813
4e74bfdb
JB		 3814 /* Also disable HT if we don't support it or the AP doesn't use WMM */
3815 sband = local->hw.wiphy->bands[req->bss->channel->band];
3816 if (!sband->ht_cap.ht_supported ||
1c4cb928 3817 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
a8243b72 3818 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
1b49de26
JB		 3819 if (!bss->wmm_used)
3820 netdev_info(sdata->dev,
3821 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 3822 }
4e74bfdb 3823
d545daba
MP		 3824 /* disable VHT if we don't support it or the AP doesn't use WMM */
3825 if (!sband->vht_cap.vht_supported ||
3826 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
3827 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1b49de26
JB		 3828 if (!bss->wmm_used)
3829 netdev_info(sdata->dev,
3830 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 3831 }
3832
ef96a842
BG		 3833 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
3834 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
3835 sizeof(ifmgd->ht_capa_mask));
3836
77fdaa12 3837 if (req->ie && req->ie_len) {
66e67e41
JB		 3838 memcpy(assoc_data->ie, req->ie, req->ie_len);
3839 assoc_data->ie_len = req->ie_len;
3840 }
f679f65d 3841
66e67e41 3842 assoc_data->bss = req->bss;
f679f65d 3843
af6b6374
JB		 3844 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
3845 if (ifmgd->powersave)
04ecd257 3846 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 3847 else
04ecd257 3848 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 3849 } else
04ecd257 3850 sdata->smps_mode = ifmgd->req_smps;
af6b6374 3851
66e67e41 3852 assoc_data->capability = req->bss->capability;
32c5057b
JB		 3853 assoc_data->wmm = bss->wmm_used &&
3854 (local->hw.queues >= IEEE80211_NUM_ACS);
66e67e41
JB		 3855 assoc_data->supp_rates = bss->supp_rates;
3856 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 3857
9caf0364 3858 rcu_read_lock();
9dde6423
JB		 3859 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
3860 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
3861 assoc_data->ap_ht_param =
3862 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
3863 else
a8243b72 3864 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
9caf0364 3865 rcu_read_unlock();
63f170e0 3866
ab13315a
KV		 3867 if (bss->wmm_used && bss->uapsd_supported &&
3868 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) {
76f0303d 3869 assoc_data->uapsd = true;
ab13315a
KV		 3870 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
3871 } else {
76f0303d 3872 assoc_data->uapsd = false;
ab13315a
KV		 3873 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
3874 }
3875
77fdaa12 3876 if (req->prev_bssid)
66e67e41 3877 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 3878
3879 if (req->use_mfp) {
3880 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
3881 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
3882 } else {
3883 ifmgd->mfp = IEEE80211_MFP_DISABLED;
3884 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
3885 }
3886
3887 if (req->crypto.control_port)
3888 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
3889 else
3890 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
3891
a621fa4d
JB		 3892 sdata->control_port_protocol = req->crypto.control_port_ethertype;
3893 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
3894
66e67e41
JB		 3895 /* kick off associate process */
3896
3897 ifmgd->assoc_data = assoc_data;
3898
a1cf775d
JB		 3899 err = ieee80211_prep_connection(sdata, req->bss, true);
3900 if (err)
3901 goto err_clear;
66e67e41
JB		 3902
3903 if (!bss->dtim_period &&
3904 sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
3905 /*
3906 * Wait up to one beacon interval ...
3907 * should this be more if we miss one?
3908 */
bdcbd8e0
JB		 3909 sdata_info(sdata, "waiting for beacon from %pM\n",
3910 ifmgd->bssid);
3f9768a5 3911 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
66e67e41
JB		 3912 } else {
3913 assoc_data->have_beacon = true;
3914 assoc_data->sent_assoc = false;
3915 assoc_data->timeout = jiffies;
3916 }
3917 run_again(ifmgd, assoc_data->timeout);
3918
fcff4f10
PS		 3919 if (bss->corrupt_data) {
3920 char *corrupt_type = "data";
3921 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
3922 if (bss->corrupt_data &
3923 IEEE80211_BSS_CORRUPT_PROBE_RESP)
3924 corrupt_type = "beacon and probe response";
3925 else
3926 corrupt_type = "beacon";
3927 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
3928 corrupt_type = "probe response";
bdcbd8e0
JB		 3929 sdata_info(sdata, "associating with AP with corrupt %s\n",
3930 corrupt_type);
fcff4f10
PS		 3931 }
3932
66e67e41
JB		 3933 err = 0;
3934 goto out;
3935 err_clear:
3d2abdfd
EP		 3936 memset(ifmgd->bssid, 0, ETH_ALEN);
3937 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 3938 ifmgd->assoc_data = NULL;
3939 err_free:
3940 kfree(assoc_data);
3941 out:
3942 mutex_unlock(&ifmgd->mtx);
3943
3944 return err;
f0706e82
JB		 3945}
3946
77fdaa12 3947int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 3948 struct cfg80211_deauth_request *req)
f0706e82 3949{
46900298 3950 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 3951 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 3952 bool tx = !req->local_state_change;
86552017 3953 bool sent_frame = false;
f0706e82 3954
77fdaa12
JB		 3955 mutex_lock(&ifmgd->mtx);
3956
bdcbd8e0
JB		 3957 sdata_info(sdata,
3958 "deauthenticating from %pM by local choice (reason=%d)\n",
3959 req->bssid, req->reason_code);
0ff71613 3960
86552017 3961 if (ifmgd->auth_data) {
8c7d857c 3962 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 3963 ieee80211_send_deauth_disassoc(sdata, req->bssid,
3964 IEEE80211_STYPE_DEAUTH,
6863255b 3965 req->reason_code, tx,
37ad3888 3966 frame_buf);
86552017
JB		 3967 ieee80211_destroy_auth_data(sdata, false);
3968 mutex_unlock(&ifmgd->mtx);
3969
3970 sent_frame = tx;
3971 goto out;
8c7d857c
EG		 3972 }
3973
86552017
JB		 3974 if (ifmgd->associated &&
3975 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
3976 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3977 req->reason_code, tx, frame_buf);
3978 sent_frame = tx;
3979 }
37ad3888
JB		 3980 mutex_unlock(&ifmgd->mtx);
3981
86552017 3982 out:
7da7cc1d 3983 mutex_lock(&sdata->local->mtx);
bc83b681 3984 ieee80211_recalc_idle(sdata->local);
7da7cc1d 3985 mutex_unlock(&sdata->local->mtx);
bc83b681 3986
86552017
JB		 3987 if (sent_frame)
3988 __cfg80211_send_deauth(sdata->dev, frame_buf,
3989 IEEE80211_DEAUTH_FRAME_LEN);
3990
f0706e82
JB		 3991 return 0;
3992}
84363e6e 3993
77fdaa12 3994int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 3995 struct cfg80211_disassoc_request *req)
9c6bd790 3996{
77fdaa12 3997 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 3998 u8 bssid[ETH_ALEN];
6ae16775 3999 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4000
77fdaa12 4001 mutex_lock(&ifmgd->mtx);
10f644a4 4002
8d8b261a
JB		 4003 /*
4004 * cfg80211 should catch this ... but it's racy since
4005 * we can receive a disassoc frame, process it, hand it
4006 * to cfg80211 while that's in a locked section already
4007 * trying to tell us that the user wants to disconnect.
4008 */
0c1ad2ca 4009 if (ifmgd->associated != req->bss) {
77fdaa12
JB		 4010 mutex_unlock(&ifmgd->mtx);
4011 return -ENOLINK;
4012 }
4013
bdcbd8e0
JB		 4014 sdata_info(sdata,
4015 "disassociating from %pM by local choice (reason=%d)\n",
4016 req->bss->bssid, req->reason_code);
0ff71613 4017
e69e95db 4018 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4019 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4020 req->reason_code, !req->local_state_change,
4021 frame_buf);
77fdaa12 4022 mutex_unlock(&ifmgd->mtx);
10f644a4 4023
6ae16775
AQ		 4024 __cfg80211_send_disassoc(sdata->dev, frame_buf,
4025 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4026
7da7cc1d 4027 mutex_lock(&sdata->local->mtx);
bc83b681 4028 ieee80211_recalc_idle(sdata->local);
7da7cc1d 4029 mutex_unlock(&sdata->local->mtx);
bc83b681 4030
10f644a4
JB		 4031 return 0;
4032}
026331c4 4033
afa762f6 4034void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4035{
4036 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4037
4038 mutex_lock(&ifmgd->mtx);
4039 if (ifmgd->assoc_data)
4040 ieee80211_destroy_assoc_data(sdata, false);
4041 if (ifmgd->auth_data)
4042 ieee80211_destroy_auth_data(sdata, false);
4043 del_timer_sync(&ifmgd->timer);
4044 mutex_unlock(&ifmgd->mtx);
4045}
4046
a97c13c3
JO		 4047void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4048 enum nl80211_cqm_rssi_threshold_event rssi_event,
4049 gfp_t gfp)
4050{
4051 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4052
b5878a2d
JB		 4053 trace_api_cqm_rssi_notify(sdata, rssi_event);
4054
a97c13c3
JO		 4055 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4056}
4057EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
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