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mac80211: introduce refcount for queue_stop_reasons
[deliverable/linux.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
1672c0e3 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 34#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 35#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
36#define IEEE80211_AUTH_MAX_TRIES 3
37#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
38#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 39#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 40#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
41#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 42
180205bd
BG		 43static int max_nullfunc_tries = 2;
44module_param(max_nullfunc_tries, int, 0644);
45MODULE_PARM_DESC(max_nullfunc_tries,
46 "Maximum nullfunc tx tries before disconnecting (reason 4).");
47
48static int max_probe_tries = 5;
49module_param(max_probe_tries, int, 0644);
50MODULE_PARM_DESC(max_probe_tries,
51 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 52
53/*
7ccc8bd7
FF		 54 * Beacon loss timeout is calculated as N frames times the
55 * advertised beacon interval. This may need to be somewhat
56 * higher than what hardware might detect to account for
57 * delays in the host processing frames. But since we also
58 * probe on beacon miss before declaring the connection lost
59 * default to what we want.
b291ba11 60 */
59c1ec2b
BG		 61static int beacon_loss_count = 7;
62module_param(beacon_loss_count, int, 0644);
63MODULE_PARM_DESC(beacon_loss_count,
64 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 65
b291ba11
JB		 66/*
67 * Time the connection can be idle before we probe
68 * it to see if we can still talk to the AP.
69 */
d1c5091f 70#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 71/*
72 * Time we wait for a probe response after sending
73 * a probe request because of beacon loss or for
74 * checking the connection still works.
75 */
180205bd
BG		 76static int probe_wait_ms = 500;
77module_param(probe_wait_ms, int, 0644);
78MODULE_PARM_DESC(probe_wait_ms,
79 "Maximum time(ms) to wait for probe response"
80 " before disconnecting (reason 4).");
f0706e82 81
17e4ec14
JM		 82/*
83 * Weight given to the latest Beacon frame when calculating average signal
84 * strength for Beacon frames received in the current BSS. This must be
85 * between 1 and 15.
86 */
87#define IEEE80211_SIGNAL_AVE_WEIGHT 3
88
391a200a
JM		 89/*
90 * How many Beacon frames need to have been used in average signal strength
91 * before starting to indicate signal change events.
92 */
93#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
94
ca386f31
JB		 95/*
96 * We can have multiple work items (and connection probing)
97 * scheduling this timer, but we need to take care to only
98 * reschedule it when it should fire _earlier_ than it was
99 * asked for before, or if it's not pending right now. This
100 * function ensures that. Note that it then is required to
101 * run this function for all timeouts after the first one
102 * has happened -- the work that runs from this timer will
103 * do that.
104 */
8d61ffa5
JB		 105static void run_again(struct ieee80211_sub_if_data *sdata,
106 unsigned long timeout)
ca386f31 107{
8d61ffa5 108 sdata_assert_lock(sdata);
ca386f31 109
8d61ffa5
JB		 110 if (!timer_pending(&sdata->u.mgd.timer) ||
111 time_before(timeout, sdata->u.mgd.timer.expires))
112 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 113}
114
d3a910a8 115void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 116{
c1288b12 117 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 118 return;
119
7eeff74c
JB		 120 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
121 return;
122
b291ba11 123 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 124 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 125}
126
be099e82
LR		 127void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
128{
0c699c3a
LR		 129 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
130
8628172f
SG		 131 if (unlikely(!sdata->u.mgd.associated))
132 return;
133
448cd2e2
EP		 134 ifmgd->probe_send_count = 0;
135
be099e82
LR		 136 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
137 return;
138
139 mod_timer(&sdata->u.mgd.conn_mon_timer,
140 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
141}
142
5484e237 143static int ecw2cw(int ecw)
60f8b39c 144{
5484e237 145 return (1 << ecw) - 1;
60f8b39c
JB		 146}
147
6565ec9b
JB		 148static u32
149ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
150 struct ieee80211_supported_band *sband,
151 struct ieee80211_channel *channel,
152 const struct ieee80211_ht_operation *ht_oper,
153 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 154 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 155{
5cdaed1e 156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b
JB		 157 struct cfg80211_chan_def vht_chandef;
158 u32 ht_cfreq, ret;
159
160 chandef->chan = channel;
161 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
162 chandef->center_freq1 = channel->center_freq;
163 chandef->center_freq2 = 0;
164
165 if (!ht_oper || !sband->ht_cap.ht_supported) {
166 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
167 goto out;
168 }
169
170 chandef->width = NL80211_CHAN_WIDTH_20;
171
172 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
173 channel->band);
174 /* check that channel matches the right operating channel */
5cdaed1e 175 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 176 /*
177 * It's possible that some APs are confused here;
178 * Netgear WNDR3700 sometimes reports 4 higher than
179 * the actual channel in association responses, but
180 * since we look at probe response/beacon data here
181 * it should be OK.
182 */
5cdaed1e
JB		 183 sdata_info(sdata,
184 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
185 channel->center_freq, ht_cfreq,
186 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 187 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
188 goto out;
189 }
190
191 /* check 40 MHz support, if we have it */
192 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
193 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
194 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
195 chandef->width = NL80211_CHAN_WIDTH_40;
196 chandef->center_freq1 += 10;
197 break;
198 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
199 chandef->width = NL80211_CHAN_WIDTH_40;
200 chandef->center_freq1 -= 10;
201 break;
202 }
203 } else {
204 /* 40 MHz (and 80 MHz) must be supported for VHT */
205 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 206 /* also mark 40 MHz disabled */
207 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 208 goto out;
209 }
210
211 if (!vht_oper || !sband->vht_cap.vht_supported) {
212 ret = IEEE80211_STA_DISABLE_VHT;
213 goto out;
214 }
215
216 vht_chandef.chan = channel;
217 vht_chandef.center_freq1 =
218 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
219 channel->band);
220 vht_chandef.center_freq2 = 0;
221
6565ec9b
JB		 222 switch (vht_oper->chan_width) {
223 case IEEE80211_VHT_CHANWIDTH_USE_HT:
224 vht_chandef.width = chandef->width;
cb664981 225 vht_chandef.center_freq1 = chandef->center_freq1;
6565ec9b
JB		 226 break;
227 case IEEE80211_VHT_CHANWIDTH_80MHZ:
228 vht_chandef.width = NL80211_CHAN_WIDTH_80;
229 break;
230 case IEEE80211_VHT_CHANWIDTH_160MHZ:
231 vht_chandef.width = NL80211_CHAN_WIDTH_160;
232 break;
233 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
234 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 235 vht_chandef.center_freq2 =
236 ieee80211_channel_to_frequency(
237 vht_oper->center_freq_seg2_idx,
238 channel->band);
6565ec9b
JB		 239 break;
240 default:
5cdaed1e 241 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 242 sdata_info(sdata,
243 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
244 vht_oper->chan_width);
6565ec9b
JB		 245 ret = IEEE80211_STA_DISABLE_VHT;
246 goto out;
247 }
248
249 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 250 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 251 sdata_info(sdata,
252 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 253 ret = IEEE80211_STA_DISABLE_VHT;
254 goto out;
255 }
256
257 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
258 ret = 0;
259 goto out;
260 }
261
262 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 263 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 264 sdata_info(sdata,
265 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 266 ret = IEEE80211_STA_DISABLE_VHT;
267 goto out;
268 }
269
270 *chandef = vht_chandef;
271
272 ret = 0;
273
274out:
963a1852
JB		 275 /*
276 * When tracking the current AP, don't do any further checks if the
277 * new chandef is identical to the one we're currently using for the
278 * connection. This keeps us from playing ping-pong with regulatory,
279 * without it the following can happen (for example):
280 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
281 * - AP advertises regdom US
282 * - CRDA loads regdom US with 80 MHz prohibited (old database)
283 * - the code below detects an unsupported channel, downgrades, and
284 * we disconnect from the AP in the caller
285 * - disconnect causes CRDA to reload world regdomain and the game
286 * starts anew.
287 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
288 *
289 * It seems possible that there are still scenarios with CSA or real
290 * bandwidth changes where a this could happen, but those cases are
291 * less common and wouldn't completely prevent using the AP.
292 */
293 if (tracking &&
294 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
295 return ret;
296
586e01ed
JB		 297 /* don't print the message below for VHT mismatch if VHT is disabled */
298 if (ret & IEEE80211_STA_DISABLE_VHT)
299 vht_chandef = *chandef;
300
ddfe49b4
JB		 301 /*
302 * Ignore the DISABLED flag when we're already connected and only
303 * tracking the APs beacon for bandwidth changes - otherwise we
304 * might get disconnected here if we connect to an AP, update our
305 * regulatory information based on the AP's country IE and the
306 * information we have is wrong/outdated and disables the channel
307 * that we're actually using for the connection to the AP.
308 */
6565ec9b 309 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 310 tracking ? 0 :
311 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 312 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
313 ret = IEEE80211_STA_DISABLE_HT |
314 IEEE80211_STA_DISABLE_VHT;
b56e4b85 315 break;
6565ec9b
JB		 316 }
317
e6b7cde4 318 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 319 }
320
5cdaed1e 321 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 322 sdata_info(sdata,
323 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
324
325 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
326 return ret;
327}
328
30eb1dc2
JB		 329static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
330 struct sta_info *sta,
331 const struct ieee80211_ht_operation *ht_oper,
332 const struct ieee80211_vht_operation *vht_oper,
333 const u8 *bssid, u32 *changed)
d5522e03
JB		 334{
335 struct ieee80211_local *local = sdata->local;
30eb1dc2 336 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 337 struct ieee80211_supported_band *sband;
55de908a 338 struct ieee80211_channel *chan;
30eb1dc2 339 struct cfg80211_chan_def chandef;
9ed6bcce 340 u16 ht_opmode;
30eb1dc2
JB		 341 u32 flags;
342 enum ieee80211_sta_rx_bandwidth new_sta_bw;
343 int ret;
d5522e03 344
30eb1dc2
JB		 345 /* if HT was/is disabled, don't track any bandwidth changes */
346 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 347 return 0;
348
30eb1dc2
JB		 349 /* don't check VHT if we associated as non-VHT station */
350 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
351 vht_oper = NULL;
352
353 if (WARN_ON_ONCE(!sta))
354 return -EINVAL;
355
017b45bb
AA		 356 /*
357 * if bss configuration changed store the new one -
358 * this may be applicable even if channel is identical
359 */
360 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
361 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
362 *changed |= BSS_CHANGED_HT;
363 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
364 }
365
f2d9330e 366 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 367 sband = local->hw.wiphy->bands[chan->band];
d5522e03 368
30eb1dc2
JB		 369 /* calculate new channel (type) based on HT/VHT operation IEs */
370 flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
5cdaed1e 371 vht_oper, &chandef, true);
30eb1dc2
JB		 372
373 /*
374 * Downgrade the new channel if we associated with restricted
375 * capabilities. For example, if we associated as a 20 MHz STA
376 * to a 40 MHz AP (due to regulatory, capabilities or config
377 * reasons) then switching to a 40 MHz channel now won't do us
378 * any good -- we couldn't use it with the AP.
379 */
380 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
381 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 382 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 383 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
384 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 385 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 386 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
387 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 388 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 389
390 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
391 return 0;
392
393 sdata_info(sdata,
394 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
395 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
396 chandef.center_freq1, chandef.center_freq2);
397
398 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
399 IEEE80211_STA_DISABLE_VHT |
400 IEEE80211_STA_DISABLE_40MHZ |
401 IEEE80211_STA_DISABLE_80P80MHZ |
402 IEEE80211_STA_DISABLE_160MHZ)) ||
403 !cfg80211_chandef_valid(&chandef)) {
404 sdata_info(sdata,
405 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
406 ifmgd->bssid);
407 return -EINVAL;
408 }
409
410 switch (chandef.width) {
411 case NL80211_CHAN_WIDTH_20_NOHT:
412 case NL80211_CHAN_WIDTH_20:
413 new_sta_bw = IEEE80211_STA_RX_BW_20;
414 break;
4bf88530 415 case NL80211_CHAN_WIDTH_40:
30eb1dc2 416 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 417 break;
30eb1dc2
JB		 418 case NL80211_CHAN_WIDTH_80:
419 new_sta_bw = IEEE80211_STA_RX_BW_80;
420 break;
421 case NL80211_CHAN_WIDTH_80P80:
422 case NL80211_CHAN_WIDTH_160:
423 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 424 break;
30eb1dc2
JB		 425 default:
426 return -EINVAL;
64f68e5d 427 }
d5522e03 428
30eb1dc2
JB		 429 if (new_sta_bw > sta->cur_max_bandwidth)
430 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 431
30eb1dc2
JB		 432 if (new_sta_bw < sta->sta.bandwidth) {
433 sta->sta.bandwidth = new_sta_bw;
434 rate_control_rate_update(local, sband, sta,
435 IEEE80211_RC_BW_CHANGED);
436 }
64f68e5d 437
30eb1dc2
JB		 438 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
439 if (ret) {
440 sdata_info(sdata,
441 "AP %pM changed bandwidth to incompatible one - disconnect\n",
442 ifmgd->bssid);
443 return ret;
444 }
7cc44ed4 445
30eb1dc2
JB		 446 if (new_sta_bw > sta->sta.bandwidth) {
447 sta->sta.bandwidth = new_sta_bw;
448 rate_control_rate_update(local, sband, sta,
449 IEEE80211_RC_BW_CHANGED);
0aaffa9b 450 }
d5522e03 451
30eb1dc2 452 return 0;
d5522e03
JB		 453}
454
9c6bd790
JB		 455/* frame sending functions */
456
66e67e41 457static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 458 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 459 struct ieee80211_supported_band *sband,
460 struct ieee80211_channel *channel,
461 enum ieee80211_smps_mode smps)
462{
66e67e41
JB		 463 u8 *pos;
464 u32 flags = channel->flags;
465 u16 cap;
466 struct ieee80211_sta_ht_cap ht_cap;
467
468 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
469
66e67e41
JB		 470 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
471 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
472
66e67e41
JB		 473 /* determine capability flags */
474 cap = ht_cap.cap;
475
9dde6423 476 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 477 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
478 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
479 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
480 cap &= ~IEEE80211_HT_CAP_SGI_40;
481 }
482 break;
483 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
484 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
485 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
486 cap &= ~IEEE80211_HT_CAP_SGI_40;
487 }
488 break;
489 }
490
24398e39
JB		 491 /*
492 * If 40 MHz was disabled associate as though we weren't
493 * capable of 40 MHz -- some broken APs will never fall
494 * back to trying to transmit in 20 MHz.
495 */
496 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
497 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
498 cap &= ~IEEE80211_HT_CAP_SGI_40;
499 }
500
66e67e41
JB		 501 /* set SM PS mode properly */
502 cap &= ~IEEE80211_HT_CAP_SM_PS;
503 switch (smps) {
504 case IEEE80211_SMPS_AUTOMATIC:
505 case IEEE80211_SMPS_NUM_MODES:
506 WARN_ON(1);
507 case IEEE80211_SMPS_OFF:
508 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
509 IEEE80211_HT_CAP_SM_PS_SHIFT;
510 break;
511 case IEEE80211_SMPS_STATIC:
512 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
513 IEEE80211_HT_CAP_SM_PS_SHIFT;
514 break;
515 case IEEE80211_SMPS_DYNAMIC:
516 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
517 IEEE80211_HT_CAP_SM_PS_SHIFT;
518 break;
519 }
520
521 /* reserve and fill IE */
522 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
523 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
524}
525
d545daba
MP		 526static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
527 struct sk_buff *skb,
b08fbbd8
JB		 528 struct ieee80211_supported_band *sband,
529 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 530{
531 u8 *pos;
532 u32 cap;
533 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 534 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 535
536 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
537
538 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 539 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 540
541 /* determine capability flags */
542 cap = vht_cap.cap;
543
f2d9d270
JB		 544 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
545 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
546 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
547 }
548
549 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
550 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
551 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
552 }
553
b08fbbd8
JB		 554 /*
555 * Some APs apparently get confused if our capabilities are better
556 * than theirs, so restrict what we advertise in the assoc request.
557 */
558 if (!(ap_vht_cap->vht_cap_info &
559 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
560 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
561
c1cf6d4e
ES		 562 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
563
564 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
565 our_bf_sts = cap & mask;
566
567 if (ap_bf_sts < our_bf_sts) {
568 cap &= ~mask;
569 cap |= ap_bf_sts;
570 }
571
d545daba 572 /* reserve and fill IE */
d4950281 573 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 574 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
575}
576
66e67e41
JB		 577static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
578{
579 struct ieee80211_local *local = sdata->local;
580 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
581 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
582 struct sk_buff *skb;
583 struct ieee80211_mgmt *mgmt;
584 u8 *pos, qos_info;
585 size_t offset = 0, noffset;
2103dec1 586 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 587 u16 capab;
588 struct ieee80211_supported_band *sband;
55de908a
JB		 589 struct ieee80211_chanctx_conf *chanctx_conf;
590 struct ieee80211_channel *chan;
2103dec1 591 u32 rate_flags, rates = 0;
66e67e41 592
8d61ffa5 593 sdata_assert_lock(sdata);
66e67e41 594
55de908a
JB		 595 rcu_read_lock();
596 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
597 if (WARN_ON(!chanctx_conf)) {
598 rcu_read_unlock();
599 return;
600 }
4bf88530 601 chan = chanctx_conf->def.chan;
2103dec1 602 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 603 rcu_read_unlock();
604 sband = local->hw.wiphy->bands[chan->band];
2103dec1 605 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 606
607 if (assoc_data->supp_rates_len) {
608 /*
609 * Get all rates supported by the device and the AP as
610 * some APs don't like getting a superset of their rates
611 * in the association request (e.g. D-Link DAP 1353 in
612 * b-only mode)...
613 */
2103dec1
SW		 614 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
615 assoc_data->supp_rates,
616 assoc_data->supp_rates_len,
617 &rates);
66e67e41
JB		 618 } else {
619 /*
620 * In case AP not provide any supported rates information
621 * before association, we send information element(s) with
622 * all rates that we support.
623 */
2103dec1
SW		 624 rates_len = 0;
625 for (i = 0; i < sband->n_bitrates; i++) {
626 if ((rate_flags & sband->bitrates[i].flags)
627 != rate_flags)
628 continue;
629 rates |= BIT(i);
630 rates_len++;
631 }
66e67e41
JB		 632 }
633
634 skb = alloc_skb(local->hw.extra_tx_headroom +
635 sizeof(*mgmt) + /* bit too much but doesn't matter */
636 2 + assoc_data->ssid_len + /* SSID */
637 4 + rates_len + /* (extended) rates */
638 4 + /* power capability */
639 2 + 2 * sband->n_channels + /* supported channels */
640 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 641 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 642 assoc_data->ie_len + /* extra IEs */
643 9, /* WMM */
644 GFP_KERNEL);
645 if (!skb)
646 return;
647
648 skb_reserve(skb, local->hw.extra_tx_headroom);
649
650 capab = WLAN_CAPABILITY_ESS;
651
652 if (sband->band == IEEE80211_BAND_2GHZ) {
653 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
654 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
655 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
656 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
657 }
658
659 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
660 capab |= WLAN_CAPABILITY_PRIVACY;
661
662 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
663 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
664 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
665
666 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
667 memset(mgmt, 0, 24);
668 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
669 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
670 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
671
672 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
673 skb_put(skb, 10);
674 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
675 IEEE80211_STYPE_REASSOC_REQ);
676 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
677 mgmt->u.reassoc_req.listen_interval =
678 cpu_to_le16(local->hw.conf.listen_interval);
679 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
680 ETH_ALEN);
681 } else {
682 skb_put(skb, 4);
683 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
684 IEEE80211_STYPE_ASSOC_REQ);
685 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
686 mgmt->u.assoc_req.listen_interval =
687 cpu_to_le16(local->hw.conf.listen_interval);
688 }
689
690 /* SSID */
691 pos = skb_put(skb, 2 + assoc_data->ssid_len);
692 *pos++ = WLAN_EID_SSID;
693 *pos++ = assoc_data->ssid_len;
694 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
695
696 /* add all rates which were marked to be used above */
697 supp_rates_len = rates_len;
698 if (supp_rates_len > 8)
699 supp_rates_len = 8;
700
701 pos = skb_put(skb, supp_rates_len + 2);
702 *pos++ = WLAN_EID_SUPP_RATES;
703 *pos++ = supp_rates_len;
704
705 count = 0;
706 for (i = 0; i < sband->n_bitrates; i++) {
707 if (BIT(i) & rates) {
2103dec1
SW		 708 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
709 5 * (1 << shift));
710 *pos++ = (u8) rate;
66e67e41
JB		 711 if (++count == 8)
712 break;
713 }
714 }
715
716 if (rates_len > count) {
717 pos = skb_put(skb, rates_len - count + 2);
718 *pos++ = WLAN_EID_EXT_SUPP_RATES;
719 *pos++ = rates_len - count;
720
721 for (i++; i < sband->n_bitrates; i++) {
722 if (BIT(i) & rates) {
2103dec1
SW		 723 int rate;
724 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
725 5 * (1 << shift));
726 *pos++ = (u8) rate;
66e67e41
JB		 727 }
728 }
729 }
730
731 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
732 /* 1. power capabilities */
733 pos = skb_put(skb, 4);
734 *pos++ = WLAN_EID_PWR_CAPABILITY;
735 *pos++ = 2;
736 *pos++ = 0; /* min tx power */
0430c883
SW		 737 /* max tx power */
738 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
66e67e41
JB		 739
740 /* 2. supported channels */
741 /* TODO: get this in reg domain format */
742 pos = skb_put(skb, 2 * sband->n_channels + 2);
743 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
744 *pos++ = 2 * sband->n_channels;
745 for (i = 0; i < sband->n_channels; i++) {
746 *pos++ = ieee80211_frequency_to_channel(
747 sband->channels[i].center_freq);
748 *pos++ = 1; /* one channel in the subband*/
749 }
750 }
751
752 /* if present, add any custom IEs that go before HT */
b3f51e94 753 if (assoc_data->ie_len) {
66e67e41
JB		 754 static const u8 before_ht[] = {
755 WLAN_EID_SSID,
756 WLAN_EID_SUPP_RATES,
757 WLAN_EID_EXT_SUPP_RATES,
758 WLAN_EID_PWR_CAPABILITY,
759 WLAN_EID_SUPPORTED_CHANNELS,
760 WLAN_EID_RSN,
761 WLAN_EID_QOS_CAPA,
762 WLAN_EID_RRM_ENABLED_CAPABILITIES,
763 WLAN_EID_MOBILITY_DOMAIN,
764 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
765 };
766 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
767 before_ht, ARRAY_SIZE(before_ht),
768 offset);
769 pos = skb_put(skb, noffset - offset);
770 memcpy(pos, assoc_data->ie + offset, noffset - offset);
771 offset = noffset;
772 }
773
f2d9d270
JB		 774 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
775 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
776 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
777
a8243b72 778 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 779 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 780 sband, chan, sdata->smps_mode);
66e67e41 781
3de3802c
JB		 782 /* if present, add any custom IEs that go before VHT */
783 if (assoc_data->ie_len) {
784 static const u8 before_vht[] = {
785 WLAN_EID_SSID,
786 WLAN_EID_SUPP_RATES,
787 WLAN_EID_EXT_SUPP_RATES,
788 WLAN_EID_PWR_CAPABILITY,
789 WLAN_EID_SUPPORTED_CHANNELS,
790 WLAN_EID_RSN,
791 WLAN_EID_QOS_CAPA,
792 WLAN_EID_RRM_ENABLED_CAPABILITIES,
793 WLAN_EID_MOBILITY_DOMAIN,
794 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
795 WLAN_EID_HT_CAPABILITY,
796 WLAN_EID_BSS_COEX_2040,
797 WLAN_EID_EXT_CAPABILITY,
798 WLAN_EID_QOS_TRAFFIC_CAPA,
799 WLAN_EID_TIM_BCAST_REQ,
800 WLAN_EID_INTERWORKING,
801 };
802 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
803 before_vht, ARRAY_SIZE(before_vht),
804 offset);
805 pos = skb_put(skb, noffset - offset);
806 memcpy(pos, assoc_data->ie + offset, noffset - offset);
807 offset = noffset;
808 }
809
d545daba 810 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 811 ieee80211_add_vht_ie(sdata, skb, sband,
812 &assoc_data->ap_vht_cap);
d545daba 813
66e67e41 814 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 815 if (assoc_data->ie_len) {
66e67e41
JB		 816 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
817 assoc_data->ie_len,
818 offset);
819 pos = skb_put(skb, noffset - offset);
820 memcpy(pos, assoc_data->ie + offset, noffset - offset);
821 offset = noffset;
822 }
823
76f0303d
JB		 824 if (assoc_data->wmm) {
825 if (assoc_data->uapsd) {
dc41e4d4
EP		 826 qos_info = ifmgd->uapsd_queues;
827 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 828 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
829 } else {
830 qos_info = 0;
831 }
832
833 pos = skb_put(skb, 9);
834 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
835 *pos++ = 7; /* len */
836 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
837 *pos++ = 0x50;
838 *pos++ = 0xf2;
839 *pos++ = 2; /* WME */
840 *pos++ = 0; /* WME info */
841 *pos++ = 1; /* WME ver */
842 *pos++ = qos_info;
843 }
844
845 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 846 if (assoc_data->ie_len) {
66e67e41
JB		 847 noffset = assoc_data->ie_len;
848 pos = skb_put(skb, noffset - offset);
849 memcpy(pos, assoc_data->ie + offset, noffset - offset);
850 }
851
a1845fc7
JB		 852 drv_mgd_prepare_tx(local, sdata);
853
66e67e41 854 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 855 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
856 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
857 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 858 ieee80211_tx_skb(sdata, skb);
859}
860
572e0012
KV		 861void ieee80211_send_pspoll(struct ieee80211_local *local,
862 struct ieee80211_sub_if_data *sdata)
863{
572e0012
KV		 864 struct ieee80211_pspoll *pspoll;
865 struct sk_buff *skb;
572e0012 866
d8cd189e
KV		 867 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
868 if (!skb)
572e0012 869 return;
572e0012 870
d8cd189e
KV		 871 pspoll = (struct ieee80211_pspoll *) skb->data;
872 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 873
62ae67be
JB		 874 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
875 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 876}
877
965bedad
JB		 878void ieee80211_send_nullfunc(struct ieee80211_local *local,
879 struct ieee80211_sub_if_data *sdata,
880 int powersave)
881{
882 struct sk_buff *skb;
d8cd189e 883 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 884 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 885
d8cd189e
KV		 886 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
887 if (!skb)
965bedad 888 return;
965bedad 889
d8cd189e 890 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 891 if (powersave)
d8cd189e 892 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 893
6c17b77b
SF		 894 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
895 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 896
897 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
898 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
899
392b9ffb 900 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 901 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
902
62ae67be 903 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 904}
905
d524215f
FF		 906static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
907 struct ieee80211_sub_if_data *sdata)
908{
909 struct sk_buff *skb;
910 struct ieee80211_hdr *nullfunc;
911 __le16 fc;
912
913 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
914 return;
915
916 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 917 if (!skb)
d524215f 918 return;
d15b8459 919
d524215f
FF		 920 skb_reserve(skb, local->hw.extra_tx_headroom);
921
922 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
923 memset(nullfunc, 0, 30);
924 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
925 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
926 nullfunc->frame_control = fc;
927 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
928 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
929 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
930 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
931
932 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
933 ieee80211_tx_skb(sdata, skb);
934}
935
cc32abd4
JB		 936/* spectrum management related things */
937static void ieee80211_chswitch_work(struct work_struct *work)
938{
939 struct ieee80211_sub_if_data *sdata =
940 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 941 struct ieee80211_local *local = sdata->local;
cc32abd4 942 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575
AN		 943 u32 changed = 0;
944 int ret;
cc32abd4 945
9607e6b6 946 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 947 return;
948
8d61ffa5 949 sdata_lock(sdata);
77fdaa12
JB		 950 if (!ifmgd->associated)
951 goto out;
cc32abd4 952
34a3740d 953 mutex_lock(&local->mtx);
33787fc4 954 ret = ieee80211_vif_change_channel(sdata, &changed);
34a3740d 955 mutex_unlock(&local->mtx);
7578d575
AN		 956 if (ret) {
957 sdata_info(sdata,
958 "vif channel switch failed, disconnecting\n");
959 ieee80211_queue_work(&sdata->local->hw,
960 &ifmgd->csa_connection_drop_work);
961 goto out;
962 }
675a0b04 963
7578d575 964 if (!local->use_chanctx) {
33787fc4 965 local->_oper_chandef = sdata->csa_chandef;
7578d575
AN		 966 /* Call "hw_config" only if doing sw channel switch.
967 * Otherwise update the channel directly
968 */
969 if (!local->ops->channel_switch)
970 ieee80211_hw_config(local, 0);
971 else
972 local->hw.conf.chandef = local->_oper_chandef;
5ce6e438 973 }
77fdaa12 974
cc32abd4 975 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 976 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 977
59af6928
MK		 978 ieee80211_bss_info_change_notify(sdata, changed);
979
980 mutex_lock(&local->mtx);
981 sdata->vif.csa_active = false;
57eebdf3 982 /* XXX: wait for a beacon first? */
59af6928
MK		 983 if (!ieee80211_csa_needs_block_tx(local))
984 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 985 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 986 IEEE80211_QUEUE_STOP_REASON_CSA,
987 false);
59af6928 988 mutex_unlock(&local->mtx);
7578d575 989
77fdaa12 990 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
59af6928 991
e5593f56
MK		 992 ieee80211_sta_reset_beacon_monitor(sdata);
993 ieee80211_sta_reset_conn_monitor(sdata);
994
59af6928 995out:
8d61ffa5 996 sdata_unlock(sdata);
cc32abd4
JB		 997}
998
5ce6e438
JB		 999void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1000{
55de908a
JB		 1001 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1002 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1003
1004 trace_api_chswitch_done(sdata, success);
1005 if (!success) {
882a7c69
JB		 1006 sdata_info(sdata,
1007 "driver channel switch failed, disconnecting\n");
1008 ieee80211_queue_work(&sdata->local->hw,
1009 &ifmgd->csa_connection_drop_work);
1010 } else {
1011 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1012 }
5ce6e438
JB		 1013}
1014EXPORT_SYMBOL(ieee80211_chswitch_done);
1015
cc32abd4
JB		 1016static void ieee80211_chswitch_timer(unsigned long data)
1017{
1018 struct ieee80211_sub_if_data *sdata =
1019 (struct ieee80211_sub_if_data *) data;
5bb644a0 1020
9b7d72c1 1021 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1022}
1023
37799e52 1024static void
4a3cb702 1025ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
04a161f4
JB		 1026 u64 timestamp, struct ieee802_11_elems *elems,
1027 bool beacon)
cc32abd4 1028{
b4f286a1 1029 struct ieee80211_local *local = sdata->local;
cc32abd4 1030 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1031 struct cfg80211_bss *cbss = ifmgd->associated;
55de908a 1032 struct ieee80211_chanctx *chanctx;
e6b7cde4 1033 enum ieee80211_band current_band;
c0f17eb9 1034 struct ieee80211_csa_ie csa_ie;
e6b7cde4 1035 int res;
cc32abd4 1036
8d61ffa5 1037 sdata_assert_lock(sdata);
77fdaa12 1038
37799e52 1039 if (!cbss)
cc32abd4
JB		 1040 return;
1041
b4f286a1 1042 if (local->scanning)
cc32abd4
JB		 1043 return;
1044
37799e52 1045 /* disregard subsequent announcements if we are already processing */
cc32abd4
JB		 1046 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
1047 return;
1048
e6b7cde4 1049 current_band = cbss->channel->band;
c0f17eb9 1050 memset(&csa_ie, 0, sizeof(csa_ie));
e6b7cde4
SW		 1051 res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
1052 ifmgd->flags,
c0f17eb9 1053 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1054 if (res < 0)
b4f286a1 1055 ieee80211_queue_work(&local->hw,
882a7c69 1056 &ifmgd->csa_connection_drop_work);
e6b7cde4 1057 if (res)
cc32abd4 1058 return;
cd64f2a9 1059
c0f17eb9 1060 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1061 IEEE80211_CHAN_DISABLED)) {
1062 sdata_info(sdata,
1063 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1064 ifmgd->associated->bssid,
c0f17eb9
CYY		 1065 csa_ie.chandef.chan->center_freq,
1066 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1067 csa_ie.chandef.center_freq2);
85220d71
JB		 1068 ieee80211_queue_work(&local->hw,
1069 &ifmgd->csa_connection_drop_work);
1070 return;
1071 }
1072
57eebdf3
JB		 1073 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
1074
7578d575 1075 mutex_lock(&local->chanctx_mtx);
b4f286a1 1076 if (local->use_chanctx) {
7578d575
AN		 1077 u32 num_chanctx = 0;
1078 list_for_each_entry(chanctx, &local->chanctx_list, list)
1079 num_chanctx++;
1080
1081 if (num_chanctx > 1 ||
1082 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1083 sdata_info(sdata,
1084 "not handling chan-switch with channel contexts\n");
1085 ieee80211_queue_work(&local->hw,
1086 &ifmgd->csa_connection_drop_work);
1087 mutex_unlock(&local->chanctx_mtx);
1088 return;
1089 }
55de908a
JB		 1090 }
1091
55de908a 1092 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
7578d575
AN		 1093 ieee80211_queue_work(&local->hw,
1094 &ifmgd->csa_connection_drop_work);
b4f286a1 1095 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1096 return;
1097 }
1098 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
1099 struct ieee80211_chanctx, conf);
c0166da9 1100 if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
55de908a
JB		 1101 sdata_info(sdata,
1102 "channel switch with multiple interfaces on the same channel, disconnecting\n");
b4f286a1 1103 ieee80211_queue_work(&local->hw,
55de908a 1104 &ifmgd->csa_connection_drop_work);
b4f286a1 1105 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1106 return;
1107 }
b4f286a1 1108 mutex_unlock(&local->chanctx_mtx);
55de908a 1109
33787fc4 1110 sdata->csa_chandef = csa_ie.chandef;
59af6928
MK		 1111
1112 mutex_lock(&local->mtx);
c46a73f3 1113 sdata->vif.csa_active = true;
59af6928 1114 sdata->csa_block_tx = csa_ie.mode;
55de908a 1115
59af6928 1116 if (sdata->csa_block_tx)
b4f286a1 1117 ieee80211_stop_queues_by_reason(&local->hw,
59af6928 1118 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1119 IEEE80211_QUEUE_STOP_REASON_CSA,
1120 false);
59af6928 1121 mutex_unlock(&local->mtx);
57eebdf3 1122
b4f286a1 1123 if (local->ops->channel_switch) {
5ce6e438 1124 /* use driver's channel switch callback */
57eebdf3
JB		 1125 struct ieee80211_channel_switch ch_switch = {
1126 .timestamp = timestamp,
c0f17eb9
CYY		 1127 .block_tx = csa_ie.mode,
1128 .chandef = csa_ie.chandef,
1129 .count = csa_ie.count,
57eebdf3
JB		 1130 };
1131
b4f286a1 1132 drv_channel_switch(local, &ch_switch);
5ce6e438
JB		 1133 return;
1134 }
1135
1136 /* channel switch handled in software */
c0f17eb9 1137 if (csa_ie.count <= 1)
b4f286a1 1138 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1139 else
cc32abd4 1140 mod_timer(&ifmgd->chswitch_timer,
c0f17eb9 1141 TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
cc32abd4
JB		 1142}
1143
1ea6f9c0
JB		 1144static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1145 struct ieee80211_channel *channel,
1146 const u8 *country_ie, u8 country_ie_len,
1147 const u8 *pwr_constr_elem)
cc32abd4 1148{
04b7b2ff
JB		 1149 struct ieee80211_country_ie_triplet *triplet;
1150 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1151 int i, chan_pwr, chan_increment, new_ap_level;
1152 bool have_chan_pwr = false;
cc32abd4 1153
04b7b2ff
JB		 1154 /* Invalid IE */
1155 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 1156 return 0;
cc32abd4 1157
04b7b2ff
JB		 1158 triplet = (void *)(country_ie + 3);
1159 country_ie_len -= 3;
1160
1161 switch (channel->band) {
1162 default:
1163 WARN_ON_ONCE(1);
1164 /* fall through */
1165 case IEEE80211_BAND_2GHZ:
1166 case IEEE80211_BAND_60GHZ:
1167 chan_increment = 1;
1168 break;
1169 case IEEE80211_BAND_5GHZ:
1170 chan_increment = 4;
1171 break;
cc32abd4 1172 }
04b7b2ff
JB		 1173
1174 /* find channel */
1175 while (country_ie_len >= 3) {
1176 u8 first_channel = triplet->chans.first_channel;
1177
1178 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1179 goto next;
1180
1181 for (i = 0; i < triplet->chans.num_channels; i++) {
1182 if (first_channel + i * chan_increment == chan) {
1183 have_chan_pwr = true;
1184 chan_pwr = triplet->chans.max_power;
1185 break;
1186 }
1187 }
1188 if (have_chan_pwr)
1189 break;
1190
1191 next:
1192 triplet++;
1193 country_ie_len -= 3;
1194 }
1195
1196 if (!have_chan_pwr)
1ea6f9c0 1197 return 0;
04b7b2ff
JB		 1198
1199 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
1200
1ea6f9c0
JB		 1201 if (sdata->ap_power_level == new_ap_level)
1202 return 0;
04b7b2ff
JB		 1203
1204 sdata_info(sdata,
1205 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1206 new_ap_level, chan_pwr, *pwr_constr_elem,
1207 sdata->u.mgd.bssid);
1ea6f9c0
JB		 1208 sdata->ap_power_level = new_ap_level;
1209 if (__ieee80211_recalc_txpower(sdata))
1210 return BSS_CHANGED_TXPOWER;
1211 return 0;
cc32abd4
JB		 1212}
1213
965bedad
JB		 1214/* powersave */
1215static void ieee80211_enable_ps(struct ieee80211_local *local,
1216 struct ieee80211_sub_if_data *sdata)
1217{
1218 struct ieee80211_conf *conf = &local->hw.conf;
1219
d5edaedc
JB		 1220 /*
1221 * If we are scanning right now then the parameters will
1222 * take effect when scan finishes.
1223 */
fbe9c429 1224 if (local->scanning)
d5edaedc
JB		 1225 return;
1226
965bedad
JB		 1227 if (conf->dynamic_ps_timeout > 0 &&
1228 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1229 mod_timer(&local->dynamic_ps_timer, jiffies +
1230 msecs_to_jiffies(conf->dynamic_ps_timeout));
1231 } else {
1232 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1233 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1234
2a13052f
JO		 1235 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1236 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1237 return;
1238
1239 conf->flags |= IEEE80211_CONF_PS;
1240 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1241 }
1242}
1243
1244static void ieee80211_change_ps(struct ieee80211_local *local)
1245{
1246 struct ieee80211_conf *conf = &local->hw.conf;
1247
1248 if (local->ps_sdata) {
965bedad
JB		 1249 ieee80211_enable_ps(local, local->ps_sdata);
1250 } else if (conf->flags & IEEE80211_CONF_PS) {
1251 conf->flags &= ~IEEE80211_CONF_PS;
1252 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1253 del_timer_sync(&local->dynamic_ps_timer);
1254 cancel_work_sync(&local->dynamic_ps_enable_work);
1255 }
1256}
1257
808118cb
JY		 1258static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1259{
1260 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1261 struct sta_info *sta = NULL;
c2c98fde 1262 bool authorized = false;
808118cb
JY		 1263
1264 if (!mgd->powersave)
1265 return false;
1266
05cb9108
JB		 1267 if (mgd->broken_ap)
1268 return false;
1269
808118cb
JY		 1270 if (!mgd->associated)
1271 return false;
1272
392b9ffb 1273 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1274 return false;
1275
989c6505 1276 if (!mgd->have_beacon)
ce857888
AB		 1277 return false;
1278
808118cb
JY		 1279 rcu_read_lock();
1280 sta = sta_info_get(sdata, mgd->bssid);
1281 if (sta)
c2c98fde 1282 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1283 rcu_read_unlock();
1284
c2c98fde 1285 return authorized;
808118cb
JY		 1286}
1287
965bedad 1288/* need to hold RTNL or interface lock */
10f644a4 1289void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1290{
1291 struct ieee80211_sub_if_data *sdata, *found = NULL;
1292 int count = 0;
195e294d 1293 int timeout;
965bedad
JB		 1294
1295 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1296 local->ps_sdata = NULL;
1297 return;
1298 }
1299
1300 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1301 if (!ieee80211_sdata_running(sdata))
965bedad 1302 continue;
8c7914de
RM		 1303 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1304 /* If an AP vif is found, then disable PS
1305 * by setting the count to zero thereby setting
1306 * ps_sdata to NULL.
1307 */
1308 count = 0;
1309 break;
1310 }
965bedad
JB		 1311 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1312 continue;
1313 found = sdata;
1314 count++;
1315 }
1316
808118cb 1317 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1318 s32 beaconint_us;
1319
1320 if (latency < 0)
ed77134b 1321 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1322
1323 beaconint_us = ieee80211_tu_to_usec(
1324 found->vif.bss_conf.beacon_int);
1325
ff616381 1326 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1327 if (timeout < 0) {
1328 /*
ff616381
JO		 1329 * Go to full PSM if the user configures a very low
1330 * latency requirement.
0ab82b04
EP		 1331 * The 2000 second value is there for compatibility
1332 * until the PM_QOS_NETWORK_LATENCY is configured
1333 * with real values.
195e294d 1334 */
0ab82b04
EP		 1335 if (latency > (1900 * USEC_PER_MSEC) &&
1336 latency != (2000 * USEC_PER_SEC))
195e294d 1337 timeout = 0;
ff616381
JO		 1338 else
1339 timeout = 100;
195e294d 1340 }
09b85568 1341 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1342
04fe2037 1343 if (beaconint_us > latency) {
10f644a4 1344 local->ps_sdata = NULL;
04fe2037 1345 } else {
04fe2037 1346 int maxslp = 1;
826262c3 1347 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1348
1349 /* If the TIM IE is invalid, pretend the value is 1 */
1350 if (!dtimper)
1351 dtimper = 1;
1352 else if (dtimper > 1)
04fe2037
JB		 1353 maxslp = min_t(int, dtimper,
1354 latency / beaconint_us);
1355
9ccebe61 1356 local->hw.conf.max_sleep_period = maxslp;
56007a02 1357 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1358 local->ps_sdata = found;
04fe2037 1359 }
10f644a4 1360 } else {
965bedad 1361 local->ps_sdata = NULL;
10f644a4 1362 }
965bedad
JB		 1363
1364 ieee80211_change_ps(local);
1365}
1366
ab095877
EP		 1367void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1368{
1369 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1370
1371 if (sdata->vif.bss_conf.ps != ps_allowed) {
1372 sdata->vif.bss_conf.ps = ps_allowed;
1373 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1374 }
1375}
1376
965bedad
JB		 1377void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1378{
1379 struct ieee80211_local *local =
1380 container_of(work, struct ieee80211_local,
1381 dynamic_ps_disable_work);
1382
1383 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1384 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1385 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1386 }
1387
1388 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1389 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1390 IEEE80211_QUEUE_STOP_REASON_PS,
1391 false);
965bedad
JB		 1392}
1393
1394void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1395{
1396 struct ieee80211_local *local =
1397 container_of(work, struct ieee80211_local,
1398 dynamic_ps_enable_work);
1399 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1400 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1401 unsigned long flags;
1402 int q;
965bedad
JB		 1403
1404 /* can only happen when PS was just disabled anyway */
1405 if (!sdata)
1406 return;
1407
5e34069c
CL		 1408 ifmgd = &sdata->u.mgd;
1409
965bedad
JB		 1410 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1411 return;
1412
09b85568 1413 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1414 /* don't enter PS if TX frames are pending */
1415 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1416 mod_timer(&local->dynamic_ps_timer, jiffies +
1417 msecs_to_jiffies(
1418 local->hw.conf.dynamic_ps_timeout));
1419 return;
1420 }
77b7023a
AN		 1421
1422 /*
1423 * transmission can be stopped by others which leads to
1424 * dynamic_ps_timer expiry. Postpone the ps timer if it
1425 * is not the actual idle state.
1426 */
1427 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1428 for (q = 0; q < local->hw.queues; q++) {
1429 if (local->queue_stop_reasons[q]) {
1430 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1431 flags);
1432 mod_timer(&local->dynamic_ps_timer, jiffies +
1433 msecs_to_jiffies(
1434 local->hw.conf.dynamic_ps_timeout));
1435 return;
1436 }
1437 }
1438 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1439 }
1ddc2867 1440
375177bf 1441 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1442 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1443 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1444 mod_timer(&local->dynamic_ps_timer, jiffies +
1445 msecs_to_jiffies(
1446 local->hw.conf.dynamic_ps_timeout));
a1598383 1447 } else {
e8306f98
VN		 1448 ieee80211_send_nullfunc(local, sdata, 1);
1449 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1450 ieee80211_flush_queues(local, sdata);
e8306f98 1451 }
f3e85b9e
VN		 1452 }
1453
2a13052f
JO		 1454 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1455 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1456 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1457 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1458 local->hw.conf.flags |= IEEE80211_CONF_PS;
1459 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1460 }
965bedad
JB		 1461}
1462
1463void ieee80211_dynamic_ps_timer(unsigned long data)
1464{
1465 struct ieee80211_local *local = (void *) data;
1466
78f1a8b7 1467 if (local->quiescing || local->suspended)
5bb644a0
JB		 1468 return;
1469
42935eca 1470 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1471}
1472
164eb02d
SW		 1473void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1474{
1475 struct delayed_work *delayed_work =
1476 container_of(work, struct delayed_work, work);
1477 struct ieee80211_sub_if_data *sdata =
1478 container_of(delayed_work, struct ieee80211_sub_if_data,
1479 dfs_cac_timer_work);
d2859df5 1480 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1481
34a3740d
JB		 1482 mutex_lock(&sdata->local->mtx);
1483 if (sdata->wdev.cac_started) {
1484 ieee80211_vif_release_channel(sdata);
1485 cfg80211_cac_event(sdata->dev, &chandef,
1486 NL80211_RADAR_CAC_FINISHED,
1487 GFP_KERNEL);
1488 }
1489 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1490}
1491
60f8b39c 1492/* MLME */
7d25745d 1493static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1494 struct ieee80211_sub_if_data *sdata,
4a3cb702 1495 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1496{
f0706e82 1497 struct ieee80211_tx_queue_params params;
4ced3f74 1498 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1499 size_t left;
1500 int count;
4a3cb702
JB		 1501 const u8 *pos;
1502 u8 uapsd_queues = 0;
f0706e82 1503
e1b3ec1a 1504 if (!local->ops->conf_tx)
7d25745d 1505 return false;
e1b3ec1a 1506
32c5057b 1507 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1508 return false;
3434fbd3
JB		 1509
1510 if (!wmm_param)
7d25745d 1511 return false;
3434fbd3 1512
f0706e82 1513 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1514 return false;
ab13315a
KV		 1515
1516 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1517 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1518
f0706e82 1519 count = wmm_param[6] & 0x0f;
46900298 1520 if (count == ifmgd->wmm_last_param_set)
7d25745d 1521 return false;
46900298 1522 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1523
1524 pos = wmm_param + 8;
1525 left = wmm_param_len - 8;
1526
1527 memset(&params, 0, sizeof(params));
1528
00e96dec 1529 sdata->wmm_acm = 0;
f0706e82
JB		 1530 for (; left >= 4; left -= 4, pos += 4) {
1531 int aci = (pos[0] >> 5) & 0x03;
1532 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1533 bool uapsd = false;
f0706e82
JB		 1534 int queue;
1535
1536 switch (aci) {
0eeb59fe 1537 case 1: /* AC_BK */
e100bb64 1538 queue = 3;
988c0f72 1539 if (acm)
00e96dec 1540 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1541 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1542 uapsd = true;
f0706e82 1543 break;
0eeb59fe 1544 case 2: /* AC_VI */
e100bb64 1545 queue = 1;
988c0f72 1546 if (acm)
00e96dec 1547 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1548 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1549 uapsd = true;
f0706e82 1550 break;
0eeb59fe 1551 case 3: /* AC_VO */
e100bb64 1552 queue = 0;
988c0f72 1553 if (acm)
00e96dec 1554 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1555 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1556 uapsd = true;
f0706e82 1557 break;
0eeb59fe 1558 case 0: /* AC_BE */
f0706e82 1559 default:
e100bb64 1560 queue = 2;
988c0f72 1561 if (acm)
00e96dec 1562 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1563 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1564 uapsd = true;
f0706e82
JB		 1565 break;
1566 }
1567
1568 params.aifs = pos[0] & 0x0f;
1569 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1570 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1571 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1572 params.acm = acm;
ab13315a
KV		 1573 params.uapsd = uapsd;
1574
bdcbd8e0
JB		 1575 mlme_dbg(sdata,
1576 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1577 queue, aci, acm,
1578 params.aifs, params.cw_min, params.cw_max,
1579 params.txop, params.uapsd);
f6f3def3
EP		 1580 sdata->tx_conf[queue] = params;
1581 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1582 sdata_err(sdata,
1583 "failed to set TX queue parameters for queue %d\n",
1584 queue);
f0706e82 1585 }
e1b3ec1a
SG		 1586
1587 /* enable WMM or activate new settings */
4ced3f74 1588 sdata->vif.bss_conf.qos = true;
7d25745d 1589 return true;
f0706e82
JB		 1590}
1591
925e64c3
SG		 1592static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1593{
1594 lockdep_assert_held(&sdata->local->mtx);
1595
392b9ffb 1596 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1597 ieee80211_run_deferred_scan(sdata->local);
1598}
1599
1600static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1601{
1602 mutex_lock(&sdata->local->mtx);
1603 __ieee80211_stop_poll(sdata);
1604 mutex_unlock(&sdata->local->mtx);
1605}
1606
7a5158ef
JB		 1607static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1608 u16 capab, bool erp_valid, u8 erp)
5628221c 1609{
bda3933a 1610 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1611 u32 changed = 0;
7a5158ef
JB		 1612 bool use_protection;
1613 bool use_short_preamble;
1614 bool use_short_slot;
1615
1616 if (erp_valid) {
1617 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1618 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1619 } else {
1620 use_protection = false;
1621 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1622 }
1623
1624 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1625 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1626 use_short_slot = true;
5628221c 1627
471b3efd 1628 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1629 bss_conf->use_cts_prot = use_protection;
1630 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1631 }
7e9ed188 1632
d43c7b37 1633 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1634 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1635 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1636 }
d9430a32 1637
7a5158ef 1638 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1639 bss_conf->use_short_slot = use_short_slot;
1640 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1641 }
1642
1643 return changed;
1644}
1645
f698d856 1646static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1647 struct cfg80211_bss *cbss,
ae5eb026 1648 u32 bss_info_changed)
f0706e82 1649{
0c1ad2ca 1650 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1651 struct ieee80211_local *local = sdata->local;
68542962 1652 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1653
ae5eb026 1654 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1655 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1656 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1657
7ccc8bd7 1658 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1659 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1660
0c1ad2ca
JB		 1661 sdata->u.mgd.associated = cbss;
1662 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1663
17e4ec14
JM		 1664 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1665
488dd7b5 1666 if (sdata->vif.p2p) {
9caf0364 1667 const struct cfg80211_bss_ies *ies;
488dd7b5 1668
9caf0364
JB		 1669 rcu_read_lock();
1670 ies = rcu_dereference(cbss->ies);
1671 if (ies) {
9caf0364
JB		 1672 int ret;
1673
1674 ret = cfg80211_get_p2p_attr(
1675 ies->data, ies->len,
1676 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1677 (u8 *) &bss_conf->p2p_noa_attr,
1678 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1679 if (ret >= 2) {
67baf663
JD		 1680 sdata->u.mgd.p2p_noa_index =
1681 bss_conf->p2p_noa_attr.index;
9caf0364 1682 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1683 }
488dd7b5 1684 }
9caf0364 1685 rcu_read_unlock();
488dd7b5
JB		 1686 }
1687
b291ba11 1688 /* just to be sure */
925e64c3 1689 ieee80211_stop_poll(sdata);
b291ba11 1690
9ac19a90 1691 ieee80211_led_assoc(local, 1);
9306102e 1692
989c6505 1693 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1694 /*
1695 * If the AP is buggy we may get here with no DTIM period
1696 * known, so assume it's 1 which is the only safe assumption
1697 * in that case, although if the TIM IE is broken powersave
1698 * probably just won't work at all.
1699 */
1700 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1701 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1702 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1703 } else {
817cee76 1704 bss_conf->beacon_rate = NULL;
e5b900d2 1705 bss_conf->dtim_period = 0;
826262c3 1706 }
e5b900d2 1707
68542962 1708 bss_conf->assoc = 1;
9cef8737 1709
a97c13c3 1710 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1711 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1712 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1713 bss_info_changed |= BSS_CHANGED_CQM;
1714
68542962 1715 /* Enable ARP filtering */
0f19b41e 1716 if (bss_conf->arp_addr_cnt)
68542962 1717 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1718
ae5eb026 1719 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1720
056508dc
JB		 1721 mutex_lock(&local->iflist_mtx);
1722 ieee80211_recalc_ps(local, -1);
1723 mutex_unlock(&local->iflist_mtx);
e0cb686f 1724
04ecd257 1725 ieee80211_recalc_smps(sdata);
ab095877
EP		 1726 ieee80211_recalc_ps_vif(sdata);
1727
9ac19a90 1728 netif_carrier_on(sdata->dev);
f0706e82
JB		 1729}
1730
e69e95db 1731static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1732 u16 stype, u16 reason, bool tx,
1733 u8 *frame_buf)
aa458d17 1734{
46900298 1735 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1736 struct ieee80211_local *local = sdata->local;
3cc5240b 1737 u32 changed = 0;
aa458d17 1738
8d61ffa5 1739 sdata_assert_lock(sdata);
77fdaa12 1740
37ad3888
JB		 1741 if (WARN_ON_ONCE(tx && !frame_buf))
1742 return;
1743
b291ba11
JB		 1744 if (WARN_ON(!ifmgd->associated))
1745 return;
1746
79543d8e
DS		 1747 ieee80211_stop_poll(sdata);
1748
77fdaa12 1749 ifmgd->associated = NULL;
aa458d17
TW		 1750 netif_carrier_off(sdata->dev);
1751
88bc40e8
EP		 1752 /*
1753 * if we want to get out of ps before disassoc (why?) we have
1754 * to do it before sending disassoc, as otherwise the null-packet
1755 * won't be valid.
1756 */
1757 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1758 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1759 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1760 }
1761 local->ps_sdata = NULL;
1762
ab095877
EP		 1763 /* disable per-vif ps */
1764 ieee80211_recalc_ps_vif(sdata);
1765
f823981e
EP		 1766 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1767 if (tx)
39ecc01d 1768 ieee80211_flush_queues(local, sdata);
f823981e 1769
37ad3888
JB		 1770 /* deauthenticate/disassociate now */
1771 if (tx || frame_buf)
88a9e31c
EP		 1772 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1773 reason, tx, frame_buf);
37ad3888
JB		 1774
1775 /* flush out frame */
1776 if (tx)
39ecc01d 1777 ieee80211_flush_queues(local, sdata);
37ad3888 1778
88a9e31c
EP		 1779 /* clear bssid only after building the needed mgmt frames */
1780 memset(ifmgd->bssid, 0, ETH_ALEN);
1781
37ad3888 1782 /* remove AP and TDLS peers */
d34ba216 1783 sta_info_flush(sdata);
37ad3888
JB		 1784
1785 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1786 changed |= ieee80211_reset_erp_info(sdata);
1787
f5e5bf25 1788 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1789 changed |= BSS_CHANGED_ASSOC;
1790 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1791
67baf663
JD		 1792 ifmgd->p2p_noa_index = -1;
1793 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1794 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 1795
dd5ecfea 1796 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 1797 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1798 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 1799 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
1800 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 1801
1ea6f9c0 1802 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1803
520eb820
KV		 1804 del_timer_sync(&local->dynamic_ps_timer);
1805 cancel_work_sync(&local->dynamic_ps_enable_work);
1806
68542962 1807 /* Disable ARP filtering */
0f19b41e 1808 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 1809 changed |= BSS_CHANGED_ARP_FILTER;
68542962 1810
3abead59
JB		 1811 sdata->vif.bss_conf.qos = false;
1812 changed |= BSS_CHANGED_QOS;
1813
0aaffa9b
JB		 1814 /* The BSSID (not really interesting) and HT changed */
1815 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1816 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1817
3abead59
JB		 1818 /* disassociated - set to defaults now */
1819 ieee80211_set_wmm_default(sdata, false);
1820
b9dcf712
JB		 1821 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1822 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1823 del_timer_sync(&sdata->u.mgd.timer);
1824 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 1825
826262c3 1826 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 1827 sdata->vif.bss_conf.beacon_rate = NULL;
1828
989c6505 1829 ifmgd->have_beacon = false;
826262c3 1830
028e8da0 1831 ifmgd->flags = 0;
34a3740d 1832 mutex_lock(&local->mtx);
028e8da0 1833 ieee80211_vif_release_channel(sdata);
59af6928
MK		 1834
1835 sdata->vif.csa_active = false;
1836 if (!ieee80211_csa_needs_block_tx(local))
1837 ieee80211_wake_queues_by_reason(&local->hw,
1838 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1839 IEEE80211_QUEUE_STOP_REASON_CSA,
1840 false);
34a3740d 1841 mutex_unlock(&local->mtx);
2475b1cc
MS		 1842
1843 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 1844}
f0706e82 1845
3cf335d5
KV		 1846void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1847 struct ieee80211_hdr *hdr)
1848{
1849 /*
1850 * We can postpone the mgd.timer whenever receiving unicast frames
1851 * from AP because we know that the connection is working both ways
1852 * at that time. But multicast frames (and hence also beacons) must
1853 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1854 * data idle periods for sending the periodic probe request to the
1855 * AP we're connected to.
3cf335d5 1856 */
b291ba11
JB		 1857 if (is_multicast_ether_addr(hdr->addr1))
1858 return;
1859
be099e82 1860 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1861}
f0706e82 1862
4e5ff376
FF		 1863static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1864{
1865 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1866 struct ieee80211_local *local = sdata->local;
4e5ff376 1867
133d40f9 1868 mutex_lock(&local->mtx);
392b9ffb
SG		 1869 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
1870 goto out;
4e5ff376 1871
925e64c3 1872 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1873
1874 mutex_lock(&local->iflist_mtx);
1875 ieee80211_recalc_ps(local, -1);
1876 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1877
1878 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1879 goto out;
4e5ff376
FF		 1880
1881 /*
1882 * We've received a probe response, but are not sure whether
1883 * we have or will be receiving any beacons or data, so let's
1884 * schedule the timers again, just in case.
1885 */
1886 ieee80211_sta_reset_beacon_monitor(sdata);
1887
1888 mod_timer(&ifmgd->conn_mon_timer,
1889 round_jiffies_up(jiffies +
1890 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1891out:
133d40f9 1892 mutex_unlock(&local->mtx);
4e5ff376
FF		 1893}
1894
1895void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1896 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1897{
75706d0e 1898 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1899 return;
1900
4e5ff376
FF		 1901 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1902 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 1903 if (ack)
cab1c7fd 1904 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 1905 else
1906 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 1907 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 1908 return;
4e5ff376 1909 }
cab1c7fd
WD		 1910
1911 if (ack)
1912 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1913}
1914
a43abf29
ML		 1915static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1916{
1917 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1918 const u8 *ssid;
f01a067d 1919 u8 *dst = ifmgd->associated->bssid;
180205bd 1920 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1921
1922 /*
1923 * Try sending broadcast probe requests for the last three
1924 * probe requests after the first ones failed since some
1925 * buggy APs only support broadcast probe requests.
1926 */
1927 if (ifmgd->probe_send_count >= unicast_limit)
1928 dst = NULL;
a43abf29 1929
4e5ff376
FF		 1930 /*
1931 * When the hardware reports an accurate Tx ACK status, it's
1932 * better to send a nullfunc frame instead of a probe request,
1933 * as it will kick us off the AP quickly if we aren't associated
1934 * anymore. The timeout will be reset if the frame is ACKed by
1935 * the AP.
1936 */
992e68bf
SD		 1937 ifmgd->probe_send_count++;
1938
04ac3c0e
FF		 1939 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1940 ifmgd->nullfunc_failed = false;
4e5ff376 1941 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 1942 } else {
88c868c4
SG		 1943 int ssid_len;
1944
9caf0364 1945 rcu_read_lock();
4e5ff376 1946 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 1947 if (WARN_ON_ONCE(ssid == NULL))
1948 ssid_len = 0;
1949 else
1950 ssid_len = ssid[1];
1951
1952 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
1672c0e3 1953 0, (u32) -1, true, 0,
55de908a 1954 ifmgd->associated->channel, false);
9caf0364 1955 rcu_read_unlock();
4e5ff376 1956 }
a43abf29 1957
180205bd 1958 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 1959 run_again(sdata, ifmgd->probe_timeout);
f69b9c79 1960 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
39ecc01d 1961 ieee80211_flush_queues(sdata->local, sdata);
a43abf29
ML		 1962}
1963
b291ba11
JB		 1964static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1965 bool beacon)
04de8381 1966{
04de8381 1967 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 1968 bool already = false;
34bfc411 1969
9607e6b6 1970 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 1971 return;
1972
8d61ffa5 1973 sdata_lock(sdata);
77fdaa12
JB		 1974
1975 if (!ifmgd->associated)
1976 goto out;
1977
133d40f9
SG		 1978 mutex_lock(&sdata->local->mtx);
1979
1980 if (sdata->local->tmp_channel || sdata->local->scanning) {
1981 mutex_unlock(&sdata->local->mtx);
1982 goto out;
1983 }
1984
a13fbe54 1985 if (beacon) {
bdcbd8e0 1986 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 1987 "detected beacon loss from AP (missed %d beacons) - probing\n",
1988 beacon_loss_count);
bdcbd8e0 1989
a13fbe54
BG		 1990 ieee80211_cqm_rssi_notify(&sdata->vif,
1991 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
1992 GFP_KERNEL);
1993 }
04de8381 1994
b291ba11
JB		 1995 /*
1996 * The driver/our work has already reported this event or the
1997 * connection monitoring has kicked in and we have already sent
1998 * a probe request. Or maybe the AP died and the driver keeps
1999 * reporting until we disassociate...
2000 *
2001 * In either case we have to ignore the current call to this
2002 * function (except for setting the correct probe reason bit)
2003 * because otherwise we would reset the timer every time and
2004 * never check whether we received a probe response!
2005 */
392b9ffb 2006 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2007 already = true;
2008
12b5f34d
EP		 2009 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2010
133d40f9
SG		 2011 mutex_unlock(&sdata->local->mtx);
2012
b291ba11
JB		 2013 if (already)
2014 goto out;
2015
4e751843
JB		 2016 mutex_lock(&sdata->local->iflist_mtx);
2017 ieee80211_recalc_ps(sdata->local, -1);
2018 mutex_unlock(&sdata->local->iflist_mtx);
2019
a43abf29
ML		 2020 ifmgd->probe_send_count = 0;
2021 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2022 out:
8d61ffa5 2023 sdata_unlock(sdata);
04de8381
KV		 2024}
2025
a619a4c0
JO		 2026struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2027 struct ieee80211_vif *vif)
2028{
2029 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2030 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2031 struct cfg80211_bss *cbss;
a619a4c0
JO		 2032 struct sk_buff *skb;
2033 const u8 *ssid;
88c868c4 2034 int ssid_len;
a619a4c0
JO		 2035
2036 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2037 return NULL;
2038
8d61ffa5 2039 sdata_assert_lock(sdata);
a619a4c0 2040
d9b3b28b
EP		 2041 if (ifmgd->associated)
2042 cbss = ifmgd->associated;
2043 else if (ifmgd->auth_data)
2044 cbss = ifmgd->auth_data->bss;
2045 else if (ifmgd->assoc_data)
2046 cbss = ifmgd->assoc_data->bss;
2047 else
a619a4c0
JO		 2048 return NULL;
2049
9caf0364 2050 rcu_read_lock();
d9b3b28b 2051 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2052 if (WARN_ON_ONCE(ssid == NULL))
2053 ssid_len = 0;
2054 else
2055 ssid_len = ssid[1];
2056
d9b3b28b 2057 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 2058 (u32) -1, cbss->channel,
6b77863b 2059 ssid + 2, ssid_len,
85a237fe 2060 NULL, 0, true);
9caf0364 2061 rcu_read_unlock();
a619a4c0
JO		 2062
2063 return skb;
2064}
2065EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2066
eef9e54c 2067static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2068{
59af6928 2069 struct ieee80211_local *local = sdata->local;
1e4dcd01 2070 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2071 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2072
8d61ffa5 2073 sdata_lock(sdata);
1e4dcd01 2074 if (!ifmgd->associated) {
8d61ffa5 2075 sdata_unlock(sdata);
1e4dcd01
JO		 2076 return;
2077 }
2078
37ad3888
JB		 2079 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2080 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2081 true, frame_buf);
882a7c69 2082 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
59af6928
MK		 2083
2084 mutex_lock(&local->mtx);
7578d575 2085 sdata->vif.csa_active = false;
59af6928
MK		 2086 if (!ieee80211_csa_needs_block_tx(local))
2087 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 2088 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2089 IEEE80211_QUEUE_STOP_REASON_CSA,
2090 false);
59af6928 2091 mutex_unlock(&local->mtx);
7da7cc1d 2092
6ff57cf8
JB		 2093 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2094 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2095 sdata_unlock(sdata);
1e4dcd01
JO		 2096}
2097
cc74c0c7 2098static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2099{
2100 struct ieee80211_sub_if_data *sdata =
2101 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2102 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2103 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2104 struct sta_info *sta;
2105
2106 if (ifmgd->associated) {
30fa9047 2107 rcu_read_lock();
a85e1d55
PS		 2108 sta = sta_info_get(sdata, ifmgd->bssid);
2109 if (sta)
2110 sta->beacon_loss_count++;
30fa9047 2111 rcu_read_unlock();
a85e1d55 2112 }
b291ba11 2113
682bd38b 2114 if (ifmgd->connection_loss) {
882a7c69
JB		 2115 sdata_info(sdata, "Connection to AP %pM lost\n",
2116 ifmgd->bssid);
eef9e54c 2117 __ieee80211_disconnect(sdata);
882a7c69 2118 } else {
1e4dcd01 2119 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2120 }
2121}
2122
2123static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2124{
2125 struct ieee80211_sub_if_data *sdata =
2126 container_of(work, struct ieee80211_sub_if_data,
2127 u.mgd.csa_connection_drop_work);
2128
eef9e54c 2129 __ieee80211_disconnect(sdata);
b291ba11
JB		 2130}
2131
04de8381
KV		 2132void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2133{
2134 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2135 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2136
b5878a2d
JB		 2137 trace_api_beacon_loss(sdata);
2138
682bd38b 2139 sdata->u.mgd.connection_loss = false;
1e4dcd01 2140 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2141}
2142EXPORT_SYMBOL(ieee80211_beacon_loss);
2143
1e4dcd01
JO		 2144void ieee80211_connection_loss(struct ieee80211_vif *vif)
2145{
2146 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2147 struct ieee80211_hw *hw = &sdata->local->hw;
2148
b5878a2d
JB		 2149 trace_api_connection_loss(sdata);
2150
682bd38b 2151 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2152 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2153}
2154EXPORT_SYMBOL(ieee80211_connection_loss);
2155
2156
66e67e41
JB		 2157static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2158 bool assoc)
2159{
2160 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2161
8d61ffa5 2162 sdata_assert_lock(sdata);
66e67e41 2163
66e67e41
JB		 2164 if (!assoc) {
2165 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2166
2167 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2168 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2169 sdata->u.mgd.flags = 0;
34a3740d 2170 mutex_lock(&sdata->local->mtx);
55de908a 2171 ieee80211_vif_release_channel(sdata);
34a3740d 2172 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2173 }
2174
5b112d3d 2175 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2176 kfree(auth_data);
2177 sdata->u.mgd.auth_data = NULL;
2178}
2179
2180static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2181 struct ieee80211_mgmt *mgmt, size_t len)
2182{
1672c0e3 2183 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2184 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2185 u8 *pos;
2186 struct ieee802_11_elems elems;
1672c0e3 2187 u32 tx_flags = 0;
66e67e41
JB		 2188
2189 pos = mgmt->u.auth.variable;
b2e506bf 2190 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2191 if (!elems.challenge)
2192 return;
2193 auth_data->expected_transaction = 4;
a1845fc7 2194 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2195 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2196 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2197 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2198 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2199 elems.challenge - 2, elems.challenge_len + 2,
2200 auth_data->bss->bssid, auth_data->bss->bssid,
2201 auth_data->key, auth_data->key_len,
1672c0e3 2202 auth_data->key_idx, tx_flags);
66e67e41
JB		 2203}
2204
8d61ffa5
JB		 2205static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2206 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2207{
2208 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2209 u8 bssid[ETH_ALEN];
2210 u16 auth_alg, auth_transaction, status_code;
2211 struct sta_info *sta;
2212
8d61ffa5 2213 sdata_assert_lock(sdata);
66e67e41
JB		 2214
2215 if (len < 24 + 6)
8d61ffa5 2216 return;
66e67e41
JB		 2217
2218 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2219 return;
66e67e41
JB		 2220
2221 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2222
b203ca39 2223 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2224 return;
66e67e41
JB		 2225
2226 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2227 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2228 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2229
2230 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2231 auth_transaction != ifmgd->auth_data->expected_transaction) {
2232 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2233 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2234 auth_transaction,
2235 ifmgd->auth_data->expected_transaction);
8d61ffa5 2236 return;
0f4126e8 2237 }
66e67e41
JB		 2238
2239 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2240 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2241 mgmt->sa, status_code);
dac211ec 2242 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2243 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2244 return;
66e67e41
JB		 2245 }
2246
2247 switch (ifmgd->auth_data->algorithm) {
2248 case WLAN_AUTH_OPEN:
2249 case WLAN_AUTH_LEAP:
2250 case WLAN_AUTH_FT:
6b8ece3a 2251 case WLAN_AUTH_SAE:
66e67e41
JB		 2252 break;
2253 case WLAN_AUTH_SHARED_KEY:
2254 if (ifmgd->auth_data->expected_transaction != 4) {
2255 ieee80211_auth_challenge(sdata, mgmt, len);
2256 /* need another frame */
8d61ffa5 2257 return;
66e67e41
JB		 2258 }
2259 break;
2260 default:
2261 WARN_ONCE(1, "invalid auth alg %d",
2262 ifmgd->auth_data->algorithm);
8d61ffa5 2263 return;
66e67e41
JB		 2264 }
2265
bdcbd8e0 2266 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2267 ifmgd->auth_data->done = true;
2268 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2269 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2270 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2271
6b8ece3a
JM		 2272 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2273 ifmgd->auth_data->expected_transaction != 2) {
2274 /*
2275 * Report auth frame to user space for processing since another
2276 * round of Authentication frames is still needed.
2277 */
6ff57cf8 2278 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2279 return;
6b8ece3a
JM		 2280 }
2281
66e67e41
JB		 2282 /* move station state to auth */
2283 mutex_lock(&sdata->local->sta_mtx);
2284 sta = sta_info_get(sdata, bssid);
2285 if (!sta) {
2286 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2287 goto out_err;
2288 }
2289 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2290 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2291 goto out_err;
2292 }
2293 mutex_unlock(&sdata->local->sta_mtx);
2294
6ff57cf8 2295 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2296 return;
66e67e41
JB		 2297 out_err:
2298 mutex_unlock(&sdata->local->sta_mtx);
2299 /* ignore frame -- wait for timeout */
66e67e41
JB		 2300}
2301
dfa1ad29
CO		 2302#define case_WLAN(type) \
2303 case WLAN_REASON_##type: return #type
2304
2305static const char *ieee80211_get_reason_code_string(u16 reason_code)
2306{
2307 switch (reason_code) {
2308 case_WLAN(UNSPECIFIED);
2309 case_WLAN(PREV_AUTH_NOT_VALID);
2310 case_WLAN(DEAUTH_LEAVING);
2311 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2312 case_WLAN(DISASSOC_AP_BUSY);
2313 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2314 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2315 case_WLAN(DISASSOC_STA_HAS_LEFT);
2316 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2317 case_WLAN(DISASSOC_BAD_POWER);
2318 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2319 case_WLAN(INVALID_IE);
2320 case_WLAN(MIC_FAILURE);
2321 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2322 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2323 case_WLAN(IE_DIFFERENT);
2324 case_WLAN(INVALID_GROUP_CIPHER);
2325 case_WLAN(INVALID_PAIRWISE_CIPHER);
2326 case_WLAN(INVALID_AKMP);
2327 case_WLAN(UNSUPP_RSN_VERSION);
2328 case_WLAN(INVALID_RSN_IE_CAP);
2329 case_WLAN(IEEE8021X_FAILED);
2330 case_WLAN(CIPHER_SUITE_REJECTED);
2331 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2332 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2333 case_WLAN(DISASSOC_LOW_ACK);
2334 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2335 case_WLAN(QSTA_LEAVE_QBSS);
2336 case_WLAN(QSTA_NOT_USE);
2337 case_WLAN(QSTA_REQUIRE_SETUP);
2338 case_WLAN(QSTA_TIMEOUT);
2339 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2340 case_WLAN(MESH_PEER_CANCELED);
2341 case_WLAN(MESH_MAX_PEERS);
2342 case_WLAN(MESH_CONFIG);
2343 case_WLAN(MESH_CLOSE);
2344 case_WLAN(MESH_MAX_RETRIES);
2345 case_WLAN(MESH_CONFIRM_TIMEOUT);
2346 case_WLAN(MESH_INVALID_GTK);
2347 case_WLAN(MESH_INCONSISTENT_PARAM);
2348 case_WLAN(MESH_INVALID_SECURITY);
2349 case_WLAN(MESH_PATH_ERROR);
2350 case_WLAN(MESH_PATH_NOFORWARD);
2351 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2352 case_WLAN(MAC_EXISTS_IN_MBSS);
2353 case_WLAN(MESH_CHAN_REGULATORY);
2354 case_WLAN(MESH_CHAN);
2355 default: return "<unknown>";
2356 }
2357}
66e67e41 2358
8d61ffa5
JB		 2359static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2360 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2361{
46900298 2362 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2363 const u8 *bssid = NULL;
f0706e82
JB		 2364 u16 reason_code;
2365
8d61ffa5 2366 sdata_assert_lock(sdata);
66e67e41 2367
f4ea83dd 2368 if (len < 24 + 2)
8d61ffa5 2369 return;
f0706e82 2370
66e67e41 2371 if (!ifmgd->associated ||
b203ca39 2372 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2373 return;
77fdaa12 2374
0c1ad2ca 2375 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2376
2377 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2378
dfa1ad29
CO		 2379 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2380 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2381
37ad3888
JB		 2382 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2383
6ff57cf8 2384 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2385}
2386
2387
8d61ffa5
JB		 2388static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2389 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2390{
46900298 2391 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2392 u16 reason_code;
2393
8d61ffa5 2394 sdata_assert_lock(sdata);
77fdaa12 2395
66e67e41 2396 if (len < 24 + 2)
8d61ffa5 2397 return;
77fdaa12 2398
66e67e41 2399 if (!ifmgd->associated ||
b203ca39 2400 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2401 return;
f0706e82
JB		 2402
2403 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2404
bdcbd8e0
JB		 2405 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2406 mgmt->sa, reason_code);
f0706e82 2407
37ad3888
JB		 2408 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2409
6ff57cf8 2410 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2411}
2412
c74d084f
CL		 2413static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2414 u8 *supp_rates, unsigned int supp_rates_len,
2415 u32 *rates, u32 *basic_rates,
2416 bool *have_higher_than_11mbit,
2103dec1
SW		 2417 int *min_rate, int *min_rate_index,
2418 int shift, u32 rate_flags)
c74d084f
CL		 2419{
2420 int i, j;
2421
2422 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2423 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2424 bool is_basic = !!(supp_rates[i] & 0x80);
2425
2103dec1 2426 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2427 *have_higher_than_11mbit = true;
2428
2429 /*
2430 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2431 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2432 *
2433 * Note: Even through the membership selector and the basic
2434 * rate flag share the same bit, they are not exactly
2435 * the same.
2436 */
2437 if (!!(supp_rates[i] & 0x80) &&
2438 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2439 continue;
2440
2441 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2442 struct ieee80211_rate *br;
2443 int brate;
2444
2445 br = &sband->bitrates[j];
2446 if ((rate_flags & br->flags) != rate_flags)
2447 continue;
2448
2449 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2450 if (brate == rate) {
c74d084f
CL		 2451 *rates |= BIT(j);
2452 if (is_basic)
2453 *basic_rates |= BIT(j);
2103dec1
SW		 2454 if ((rate * 5) < *min_rate) {
2455 *min_rate = rate * 5;
c74d084f
CL		 2456 *min_rate_index = j;
2457 }
2458 break;
2459 }
2460 }
2461 }
2462}
f0706e82 2463
66e67e41
JB		 2464static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2465 bool assoc)
2466{
2467 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2468
8d61ffa5 2469 sdata_assert_lock(sdata);
66e67e41 2470
66e67e41
JB		 2471 if (!assoc) {
2472 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2473
2474 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2475 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2476 sdata->u.mgd.flags = 0;
34a3740d 2477 mutex_lock(&sdata->local->mtx);
55de908a 2478 ieee80211_vif_release_channel(sdata);
34a3740d 2479 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2480 }
2481
2482 kfree(assoc_data);
2483 sdata->u.mgd.assoc_data = NULL;
2484}
2485
2486static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2487 struct cfg80211_bss *cbss,
af6b6374 2488 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2489{
46900298 2490 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2491 struct ieee80211_local *local = sdata->local;
8318d78a 2492 struct ieee80211_supported_band *sband;
f0706e82 2493 struct sta_info *sta;
af6b6374 2494 u8 *pos;
af6b6374 2495 u16 capab_info, aid;
f0706e82 2496 struct ieee802_11_elems elems;
bda3933a 2497 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2498 const struct cfg80211_bss_ies *bss_ies = NULL;
2499 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2500 u32 changed = 0;
c74d084f 2501 int err;
35d865af 2502 bool ret;
f0706e82 2503
af6b6374 2504 /* AssocResp and ReassocResp have identical structure */
f0706e82 2505
f0706e82 2506 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2507 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2508
1dd84aa2 2509 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2510 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2511 aid);
1dd84aa2
JB		 2512 aid &= ~(BIT(15) | BIT(14));
2513
05cb9108
JB		 2514 ifmgd->broken_ap = false;
2515
2516 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2517 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2518 aid);
05cb9108
JB		 2519 aid = 0;
2520 ifmgd->broken_ap = true;
2521 }
2522
af6b6374 2523 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2524 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2525
f0706e82 2526 if (!elems.supp_rates) {
bdcbd8e0 2527 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2528 return false;
f0706e82
JB		 2529 }
2530
46900298 2531 ifmgd->aid = aid;
f0706e82 2532
35d865af
JB		 2533 /*
2534 * Some APs are erroneously not including some information in their
2535 * (re)association response frames. Try to recover by using the data
2536 * from the beacon or probe response. This seems to afflict mobile
2537 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2538 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2539 */
2540 if ((assoc_data->wmm && !elems.wmm_param) ||
2541 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2542 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2543 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2544 (!elems.vht_cap_elem || !elems.vht_operation))) {
2545 const struct cfg80211_bss_ies *ies;
2546 struct ieee802_11_elems bss_elems;
2547
2548 rcu_read_lock();
2549 ies = rcu_dereference(cbss->ies);
2550 if (ies)
2551 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2552 GFP_ATOMIC);
2553 rcu_read_unlock();
2554 if (!bss_ies)
2555 return false;
2556
2557 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2558 false, &bss_elems);
2559 if (assoc_data->wmm &&
2560 !elems.wmm_param && bss_elems.wmm_param) {
2561 elems.wmm_param = bss_elems.wmm_param;
2562 sdata_info(sdata,
2563 "AP bug: WMM param missing from AssocResp\n");
2564 }
2565
2566 /*
2567 * Also check if we requested HT/VHT, otherwise the AP doesn't
2568 * have to include the IEs in the (re)association response.
2569 */
2570 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2571 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2572 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2573 sdata_info(sdata,
2574 "AP bug: HT capability missing from AssocResp\n");
2575 }
2576 if (!elems.ht_operation && bss_elems.ht_operation &&
2577 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2578 elems.ht_operation = bss_elems.ht_operation;
2579 sdata_info(sdata,
2580 "AP bug: HT operation missing from AssocResp\n");
2581 }
2582 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2583 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2584 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2585 sdata_info(sdata,
2586 "AP bug: VHT capa missing from AssocResp\n");
2587 }
2588 if (!elems.vht_operation && bss_elems.vht_operation &&
2589 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2590 elems.vht_operation = bss_elems.vht_operation;
2591 sdata_info(sdata,
2592 "AP bug: VHT operation missing from AssocResp\n");
2593 }
2594 }
2595
30eb1dc2
JB		 2596 /*
2597 * We previously checked these in the beacon/probe response, so
2598 * they should be present here. This is just a safety net.
2599 */
2600 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2601 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2602 sdata_info(sdata,
35d865af
JB		 2603 "HT AP is missing WMM params or HT capability/operation\n");
2604 ret = false;
2605 goto out;
30eb1dc2
JB		 2606 }
2607
2608 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2609 (!elems.vht_cap_elem || !elems.vht_operation)) {
2610 sdata_info(sdata,
35d865af
JB		 2611 "VHT AP is missing VHT capability/operation\n");
2612 ret = false;
2613 goto out;
30eb1dc2
JB		 2614 }
2615
2a33bee2
GE		 2616 mutex_lock(&sdata->local->sta_mtx);
2617 /*
2618 * station info was already allocated and inserted before
2619 * the association and should be available to us
2620 */
7852e361 2621 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2622 if (WARN_ON(!sta)) {
2623 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2624 ret = false;
2625 goto out;
77fdaa12 2626 }
05e5e883 2627
55de908a 2628 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2629
30eb1dc2 2630 /* Set up internal HT/VHT capabilities */
a8243b72 2631 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2632 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2633 elems.ht_cap_elem, sta);
64f68e5d 2634
818255ea
MP		 2635 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2636 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2637 elems.vht_cap_elem, sta);
818255ea 2638
30eb1dc2
JB		 2639 /*
2640 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2641 * in their association response, so ignore that data for our own
2642 * configuration. If it changed since the last beacon, we'll get the
2643 * next beacon and update then.
2644 */
1128958d 2645
bee7f586
JB		 2646 /*
2647 * If an operating mode notification IE is present, override the
2648 * NSS calculation (that would be done in rate_control_rate_init())
2649 * and use the # of streams from that element.
2650 */
2651 if (elems.opmode_notif &&
2652 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2653 u8 nss;
2654
2655 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2656 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2657 nss += 1;
2658 sta->sta.rx_nss = nss;
2659 }
2660
4b7679a5 2661 rate_control_rate_init(sta);
f0706e82 2662
46900298 2663 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2664 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2665
ddf4ac53 2666 if (elems.wmm_param)
c2c98fde 2667 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2668
3e4d40fa 2669 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2670 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2671 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2672 if (err) {
bdcbd8e0
JB		 2673 sdata_info(sdata,
2674 "failed to move station %pM to desired state\n",
2675 sta->sta.addr);
c8987876
JB		 2676 WARN_ON(__sta_info_destroy(sta));
2677 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2678 ret = false;
2679 goto out;
c8987876
JB		 2680 }
2681
7852e361 2682 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2683
f2176d72
JO		 2684 /*
2685 * Always handle WMM once after association regardless
2686 * of the first value the AP uses. Setting -1 here has
2687 * that effect because the AP values is an unsigned
2688 * 4-bit value.
2689 */
2690 ifmgd->wmm_last_param_set = -1;
2691
095d81ce 2692 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2693 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2694 elems.wmm_param_len);
aa837e1d 2695 else
3abead59
JB		 2696 ieee80211_set_wmm_default(sdata, false);
2697 changed |= BSS_CHANGED_QOS;
f0706e82 2698
60f8b39c
JB		 2699 /* set AID and assoc capability,
2700 * ieee80211_set_associated() will tell the driver */
2701 bss_conf->aid = aid;
2702 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2703 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2704
d524215f
FF		 2705 /*
2706 * If we're using 4-addr mode, let the AP know that we're
2707 * doing so, so that it can create the STA VLAN on its side
2708 */
2709 if (ifmgd->use_4addr)
2710 ieee80211_send_4addr_nullfunc(local, sdata);
2711
15b7b062 2712 /*
b291ba11
JB		 2713 * Start timer to probe the connection to the AP now.
2714 * Also start the timer that will detect beacon loss.
15b7b062 2715 */
b291ba11 2716 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2717 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2718
35d865af
JB		 2719 ret = true;
2720 out:
2721 kfree(bss_ies);
2722 return ret;
f0706e82
JB		 2723}
2724
8d61ffa5
JB		 2725static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2726 struct ieee80211_mgmt *mgmt,
2727 size_t len)
66e67e41
JB		 2728{
2729 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2730 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2731 u16 capab_info, status_code, aid;
2732 struct ieee802_11_elems elems;
2733 u8 *pos;
2734 bool reassoc;
8d61ffa5 2735 struct cfg80211_bss *bss;
66e67e41 2736
8d61ffa5 2737 sdata_assert_lock(sdata);
66e67e41
JB		 2738
2739 if (!assoc_data)
8d61ffa5 2740 return;
b203ca39 2741 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 2742 return;
66e67e41
JB		 2743
2744 /*
2745 * AssocResp and ReassocResp have identical structure, so process both
2746 * of them in this function.
2747 */
2748
2749 if (len < 24 + 6)
8d61ffa5 2750 return;
66e67e41
JB		 2751
2752 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2753 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2754 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2755 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2756
bdcbd8e0
JB		 2757 sdata_info(sdata,
2758 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2759 reassoc ? "Rea" : "A", mgmt->sa,
2760 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2761
2762 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2763 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2764
2765 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 2766 elems.timeout_int &&
2767 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 2768 u32 tu, ms;
79ba1d89 2769 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 2770 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2771 sdata_info(sdata,
2772 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2773 mgmt->sa, tu, ms);
66e67e41 2774 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 2775 assoc_data->timeout_started = true;
66e67e41 2776 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 2777 run_again(sdata, assoc_data->timeout);
2778 return;
66e67e41
JB		 2779 }
2780
8d61ffa5 2781 bss = assoc_data->bss;
66e67e41
JB		 2782
2783 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2784 sdata_info(sdata, "%pM denied association (code=%d)\n",
2785 mgmt->sa, status_code);
66e67e41
JB		 2786 ieee80211_destroy_assoc_data(sdata, false);
2787 } else {
8d61ffa5 2788 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 2789 /* oops -- internal error -- send timeout for now */
10a9109f 2790 ieee80211_destroy_assoc_data(sdata, false);
959867fa 2791 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 2792 return;
66e67e41 2793 }
635d999f 2794 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2795
2796 /*
2797 * destroy assoc_data afterwards, as otherwise an idle
2798 * recalc after assoc_data is NULL but before associated
2799 * is set can cause the interface to go idle
2800 */
2801 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2802 }
2803
6ff57cf8 2804 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
66e67e41 2805}
8e3c1b77 2806
98c8fccf 2807static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 2808 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 2809 struct ieee80211_rx_status *rx_status,
d45c4172 2810 struct ieee802_11_elems *elems)
98c8fccf
JB		 2811{
2812 struct ieee80211_local *local = sdata->local;
c2b13452 2813 struct ieee80211_bss *bss;
98c8fccf 2814 struct ieee80211_channel *channel;
56007a02 2815
8d61ffa5 2816 sdata_assert_lock(sdata);
b4f286a1 2817
3afc2167
EG		 2818 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
2819 if (!channel)
98c8fccf
JB		 2820 return;
2821
98c8fccf 2822 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 2823 channel);
817cee76 2824 if (bss) {
817cee76 2825 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 2826 ieee80211_rx_bss_put(local, bss);
817cee76 2827 }
f0706e82
JB		 2828}
2829
2830
f698d856 2831static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2832 struct sk_buff *skb)
f0706e82 2833{
af6b6374 2834 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2835 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2836 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2837 size_t baselen, len = skb->len;
ae6a44e3
EK		 2838 struct ieee802_11_elems elems;
2839
15b7b062
KV		 2840 ifmgd = &sdata->u.mgd;
2841
8d61ffa5 2842 sdata_assert_lock(sdata);
77fdaa12 2843
b203ca39 2844 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2845 return; /* ignore ProbeResp to foreign address */
2846
ae6a44e3
EK		 2847 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2848 if (baselen > len)
2849 return;
2850
2851 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 2852 false, &elems);
ae6a44e3 2853
d45c4172 2854 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 2855
77fdaa12 2856 if (ifmgd->associated &&
b203ca39 2857 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2858 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2859
2860 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2861 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2862 /* got probe response, continue with auth */
bdcbd8e0 2863 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2864 ifmgd->auth_data->tries = 0;
2865 ifmgd->auth_data->timeout = jiffies;
89afe614 2866 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2867 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2868 }
f0706e82
JB		 2869}
2870
d91f36db
JB		 2871/*
2872 * This is the canonical list of information elements we care about,
2873 * the filter code also gives us all changes to the Microsoft OUI
2874 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2875 *
2876 * We implement beacon filtering in software since that means we can
2877 * avoid processing the frame here and in cfg80211, and userspace
2878 * will not be able to tell whether the hardware supports it or not.
2879 *
2880 * XXX: This list needs to be dynamic -- userspace needs to be able to
2881 * add items it requires. It also needs to be able to tell us to
2882 * look out for other vendor IEs.
2883 */
2884static const u64 care_about_ies =
1d4df3a5
JB		 2885 (1ULL << WLAN_EID_COUNTRY) |
2886 (1ULL << WLAN_EID_ERP_INFO) |
2887 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2888 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2889 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2890 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2891
8d61ffa5
JB		 2892static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
2893 struct ieee80211_mgmt *mgmt, size_t len,
2894 struct ieee80211_rx_status *rx_status)
f0706e82 2895{
d91f36db 2896 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2897 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2898 size_t baselen;
2899 struct ieee802_11_elems elems;
f698d856 2900 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2901 struct ieee80211_chanctx_conf *chanctx_conf;
2902 struct ieee80211_channel *chan;
bee7f586 2903 struct sta_info *sta;
471b3efd 2904 u32 changed = 0;
f87ad637 2905 bool erp_valid;
7a5158ef 2906 u8 erp_value = 0;
d91f36db 2907 u32 ncrc;
77fdaa12 2908 u8 *bssid;
8d61ffa5 2909 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 2910
8d61ffa5 2911 sdata_assert_lock(sdata);
f0706e82 2912
ae6a44e3
EK		 2913 /* Process beacon from the current BSS */
2914 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2915 if (baselen > len)
8d61ffa5 2916 return;
ae6a44e3 2917
55de908a
JB		 2918 rcu_read_lock();
2919 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2920 if (!chanctx_conf) {
2921 rcu_read_unlock();
8d61ffa5 2922 return;
55de908a
JB		 2923 }
2924
4bf88530 2925 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 2926 rcu_read_unlock();
8d61ffa5 2927 return;
55de908a 2928 }
4bf88530 2929 chan = chanctx_conf->def.chan;
55de908a 2930 rcu_read_unlock();
f0706e82 2931
c65dd147 2932 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 2933 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 2934 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 2935 len - baselen, false, &elems);
77fdaa12 2936
d45c4172 2937 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 2938 if (elems.tim && !elems.parse_error) {
2939 const struct ieee80211_tim_ie *tim_ie = elems.tim;
2940 ifmgd->dtim_period = tim_ie->dtim_period;
2941 }
989c6505 2942 ifmgd->have_beacon = true;
c65dd147 2943 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 2944 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
2945 sdata->vif.bss_conf.sync_tsf =
2946 le64_to_cpu(mgmt->u.beacon.timestamp);
2947 sdata->vif.bss_conf.sync_device_ts =
2948 rx_status->device_timestamp;
2949 if (elems.tim)
2950 sdata->vif.bss_conf.sync_dtim_count =
2951 elems.tim->dtim_count;
2952 else
2953 sdata->vif.bss_conf.sync_dtim_count = 0;
2954 }
66e67e41
JB		 2955 /* continue assoc process */
2956 ifmgd->assoc_data->timeout = jiffies;
89afe614 2957 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 2958 run_again(sdata, ifmgd->assoc_data->timeout);
2959 return;
66e67e41 2960 }
77fdaa12 2961
66e67e41 2962 if (!ifmgd->associated ||
b203ca39 2963 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2964 return;
66e67e41 2965 bssid = ifmgd->associated->bssid;
f0706e82 2966
17e4ec14
JM		 2967 /* Track average RSSI from the Beacon frames of the current AP */
2968 ifmgd->last_beacon_signal = rx_status->signal;
2969 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2970 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2971 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2972 ifmgd->last_cqm_event_signal = 0;
391a200a 2973 ifmgd->count_beacon_signal = 1;
615f7b9b 2974 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2975 } else {
2976 ifmgd->ave_beacon_signal =
2977 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
2978 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
2979 ifmgd->ave_beacon_signal) / 16;
391a200a 2980 ifmgd->count_beacon_signal++;
17e4ec14 2981 }
615f7b9b
MV		 2982
2983 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
2984 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
2985 int sig = ifmgd->ave_beacon_signal;
2986 int last_sig = ifmgd->last_ave_beacon_signal;
2987
2988 /*
2989 * if signal crosses either of the boundaries, invoke callback
2990 * with appropriate parameters
2991 */
2992 if (sig > ifmgd->rssi_max_thold &&
2993 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
2994 ifmgd->last_ave_beacon_signal = sig;
887da917 2995 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 2996 } else if (sig < ifmgd->rssi_min_thold &&
2997 (last_sig >= ifmgd->rssi_max_thold ||
2998 last_sig == 0)) {
2999 ifmgd->last_ave_beacon_signal = sig;
887da917 3000 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 3001 }
3002 }
3003
17e4ec14 3004 if (bss_conf->cqm_rssi_thold &&
391a200a 3005 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3006 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 3007 int sig = ifmgd->ave_beacon_signal / 16;
3008 int last_event = ifmgd->last_cqm_event_signal;
3009 int thold = bss_conf->cqm_rssi_thold;
3010 int hyst = bss_conf->cqm_rssi_hyst;
3011 if (sig < thold &&
3012 (last_event == 0 || sig < last_event - hyst)) {
3013 ifmgd->last_cqm_event_signal = sig;
3014 ieee80211_cqm_rssi_notify(
3015 &sdata->vif,
3016 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3017 GFP_KERNEL);
3018 } else if (sig > thold &&
3019 (last_event == 0 || sig > last_event + hyst)) {
3020 ifmgd->last_cqm_event_signal = sig;
3021 ieee80211_cqm_rssi_notify(
3022 &sdata->vif,
3023 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3024 GFP_KERNEL);
3025 }
3026 }
3027
392b9ffb 3028 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3029 mlme_dbg_ratelimited(sdata,
112c31f0 3030 "cancelling AP probe due to a received beacon\n");
392b9ffb 3031 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3032 }
3033
b291ba11
JB		 3034 /*
3035 * Push the beacon loss detection into the future since
3036 * we are processing a beacon from the AP just now.
3037 */
d3a910a8 3038 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3039
d91f36db
JB		 3040 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3041 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3042 len - baselen, false, &elems,
d91f36db
JB		 3043 care_about_ies, ncrc);
3044
25c9c875 3045 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3046 bool directed_tim = ieee80211_check_tim(elems.tim,
3047 elems.tim_len,
3048 ifmgd->aid);
1fb3606b 3049 if (directed_tim) {
572e0012 3050 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3051 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3052 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3053 ieee80211_hw_config(local,
3054 IEEE80211_CONF_CHANGE_PS);
3055 }
572e0012 3056 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3057 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3058 local->pspolling = true;
3059
3060 /*
3061 * Here is assumed that the driver will be
3062 * able to send ps-poll frame and receive a
3063 * response even though power save mode is
3064 * enabled, but some drivers might require
3065 * to disable power save here. This needs
3066 * to be investigated.
3067 */
3068 ieee80211_send_pspoll(local, sdata);
3069 }
a97b77b9
VN		 3070 }
3071 }
7a5158ef 3072
488dd7b5 3073 if (sdata->vif.p2p) {
67baf663 3074 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3075 int ret;
3076
3077 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3078 len - baselen,
3079 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3080 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3081 if (ret >= 2) {
3082 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3083 /* valid noa_attr and index changed */
3084 sdata->u.mgd.p2p_noa_index = noa.index;
3085 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3086 changed |= BSS_CHANGED_P2P_PS;
3087 /*
3088 * make sure we update all information, the CRC
3089 * mechanism doesn't look at P2P attributes.
3090 */
3091 ifmgd->beacon_crc_valid = false;
3092 }
3093 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3094 /* noa_attr not found and we had valid noa_attr before */
3095 sdata->u.mgd.p2p_noa_index = -1;
3096 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3097 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3098 ifmgd->beacon_crc_valid = false;
3099 }
3100 }
3101
d8ec4433 3102 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3103 return;
30196673 3104 ifmgd->beacon_crc = ncrc;
d8ec4433 3105 ifmgd->beacon_crc_valid = true;
30196673 3106
d45c4172 3107 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3108
d70b7616
JB		 3109 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
3110 &elems, true);
3111
095d81ce
JB		 3112 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3113 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3114 elems.wmm_param_len))
3115 changed |= BSS_CHANGED_QOS;
3116
c65dd147
EG		 3117 /*
3118 * If we haven't had a beacon before, tell the driver about the
ef429dad 3119 * DTIM period (and beacon timing if desired) now.
c65dd147 3120 */
989c6505 3121 if (!ifmgd->have_beacon) {
c65dd147
EG		 3122 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3123 if (elems.tim)
3124 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3125 else
3126 bss_conf->dtim_period = 1;
ef429dad
JB		 3127
3128 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3129 sdata->vif.bss_conf.sync_tsf =
3130 le64_to_cpu(mgmt->u.beacon.timestamp);
3131 sdata->vif.bss_conf.sync_device_ts =
3132 rx_status->device_timestamp;
3133 if (elems.tim)
3134 sdata->vif.bss_conf.sync_dtim_count =
3135 elems.tim->dtim_count;
3136 else
3137 sdata->vif.bss_conf.sync_dtim_count = 0;
3138 }
3139
989c6505
AB		 3140 changed |= BSS_CHANGED_BEACON_INFO;
3141 ifmgd->have_beacon = true;
482a9c74
AB		 3142
3143 mutex_lock(&local->iflist_mtx);
3144 ieee80211_recalc_ps(local, -1);
3145 mutex_unlock(&local->iflist_mtx);
3146
ce857888 3147 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3148 }
3149
1946bed9 3150 if (elems.erp_info) {
7a5158ef
JB		 3151 erp_valid = true;
3152 erp_value = elems.erp_info[0];
3153 } else {
3154 erp_valid = false;
50c4afb9 3155 }
7a5158ef
JB		 3156 changed |= ieee80211_handle_bss_capability(sdata,
3157 le16_to_cpu(mgmt->u.beacon.capab_info),
3158 erp_valid, erp_value);
f0706e82 3159
1128958d 3160 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3161 sta = sta_info_get(sdata, bssid);
3162
30eb1dc2
JB		 3163 if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
3164 elems.vht_operation, bssid, &changed)) {
3165 mutex_unlock(&local->sta_mtx);
3166 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3167 WLAN_REASON_DEAUTH_LEAVING,
3168 true, deauth_buf);
6ff57cf8
JB		 3169 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3170 sizeof(deauth_buf));
8d61ffa5 3171 return;
30eb1dc2 3172 }
bee7f586
JB		 3173
3174 if (sta && elems.opmode_notif)
3175 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3176 rx_status->band, true);
1128958d 3177 mutex_unlock(&local->sta_mtx);
d3c990fb 3178
04b7b2ff
JB		 3179 if (elems.country_elem && elems.pwr_constr_elem &&
3180 mgmt->u.probe_resp.capab_info &
3181 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 3182 changed |= ieee80211_handle_pwr_constr(sdata, chan,
3183 elems.country_elem,
3184 elems.country_elem_len,
3185 elems.pwr_constr_elem);
3f2355cb 3186
471b3efd 3187 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3188}
3189
1fa57d01
JB		 3190void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3191 struct sk_buff *skb)
f0706e82
JB		 3192{
3193 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3194 struct ieee80211_mgmt *mgmt;
3195 u16 fc;
1b3a2e49
JB		 3196 struct ieee802_11_elems elems;
3197 int ies_len;
f0706e82 3198
f0706e82
JB		 3199 rx_status = (struct ieee80211_rx_status *) skb->cb;
3200 mgmt = (struct ieee80211_mgmt *) skb->data;
3201 fc = le16_to_cpu(mgmt->frame_control);
3202
8d61ffa5 3203 sdata_lock(sdata);
77fdaa12 3204
66e67e41
JB		 3205 switch (fc & IEEE80211_FCTL_STYPE) {
3206 case IEEE80211_STYPE_BEACON:
8d61ffa5 3207 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3208 break;
3209 case IEEE80211_STYPE_PROBE_RESP:
3210 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3211 break;
3212 case IEEE80211_STYPE_AUTH:
8d61ffa5 3213 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3214 break;
3215 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3216 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3217 break;
3218 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3219 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3220 break;
3221 case IEEE80211_STYPE_ASSOC_RESP:
3222 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3223 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3224 break;
3225 case IEEE80211_STYPE_ACTION:
37799e52 3226 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3227 ies_len = skb->len -
3228 offsetof(struct ieee80211_mgmt,
3229 u.action.u.chan_switch.variable);
37799e52
JB		 3230
3231 if (ies_len < 0)
3232 break;
3233
3234 ieee802_11_parse_elems(
3235 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3236 ies_len, true, &elems);
37799e52
JB		 3237
3238 if (elems.parse_error)
3239 break;
3240
1b3a2e49
JB		 3241 ieee80211_sta_process_chanswitch(sdata,
3242 rx_status->mactime,
04a161f4 3243 &elems, false);
1b3a2e49
JB		 3244 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3245 ies_len = skb->len -
3246 offsetof(struct ieee80211_mgmt,
3247 u.action.u.ext_chan_switch.variable);
3248
3249 if (ies_len < 0)
3250 break;
3251
3252 ieee802_11_parse_elems(
3253 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3254 ies_len, true, &elems);
1b3a2e49
JB		 3255
3256 if (elems.parse_error)
3257 break;
3258
3259 /* for the handling code pretend this was also an IE */
3260 elems.ext_chansw_ie =
3261 &mgmt->u.action.u.ext_chan_switch.data;
3262
66e67e41 3263 ieee80211_sta_process_chanswitch(sdata,
37799e52 3264 rx_status->mactime,
04a161f4 3265 &elems, false);
77fdaa12 3266 }
37799e52 3267 break;
77fdaa12 3268 }
8d61ffa5 3269 sdata_unlock(sdata);
f0706e82
JB		 3270}
3271
9c6bd790 3272static void ieee80211_sta_timer(unsigned long data)
f0706e82 3273{
60f8b39c
JB		 3274 struct ieee80211_sub_if_data *sdata =
3275 (struct ieee80211_sub_if_data *) data;
5bb644a0 3276
9b7d72c1 3277 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3278}
3279
04ac3c0e 3280static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3281 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3282{
6ae16775 3283 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3284
37ad3888 3285 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3286 tx, frame_buf);
37ad3888 3287
6ff57cf8
JB		 3288 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3289 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3290}
3291
66e67e41
JB		 3292static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3293{
3294 struct ieee80211_local *local = sdata->local;
3295 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3296 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3297 u32 tx_flags = 0;
66e67e41 3298
8d61ffa5 3299 sdata_assert_lock(sdata);
66e67e41
JB		 3300
3301 if (WARN_ON_ONCE(!auth_data))
3302 return -EINVAL;
3303
66e67e41
JB		 3304 auth_data->tries++;
3305
3306 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3307 sdata_info(sdata, "authentication with %pM timed out\n",
3308 auth_data->bss->bssid);
66e67e41
JB		 3309
3310 /*
3311 * Most likely AP is not in the range so remove the
3312 * bss struct for that AP.
3313 */
3314 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3315
3316 return -ETIMEDOUT;
3317 }
3318
a1845fc7
JB		 3319 drv_mgd_prepare_tx(local, sdata);
3320
66e67e41 3321 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3322 u16 trans = 1;
3323 u16 status = 0;
3324
bdcbd8e0
JB		 3325 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3326 auth_data->bss->bssid, auth_data->tries,
3327 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3328
3329 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3330
3331 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3332 trans = auth_data->sae_trans;
3333 status = auth_data->sae_status;
3334 auth_data->expected_transaction = trans;
3335 }
3336
6211dd12
SG		 3337 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3338 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3339 IEEE80211_TX_INTFL_MLME_CONN_TX;
3340
6b8ece3a
JM		 3341 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3342 auth_data->data, auth_data->data_len,
66e67e41 3343 auth_data->bss->bssid,
1672c0e3
JB		 3344 auth_data->bss->bssid, NULL, 0, 0,
3345 tx_flags);
66e67e41
JB		 3346 } else {
3347 const u8 *ssidie;
3348
bdcbd8e0
JB		 3349 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3350 auth_data->bss->bssid, auth_data->tries,
3351 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3352
9caf0364 3353 rcu_read_lock();
66e67e41 3354 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3355 if (!ssidie) {
3356 rcu_read_unlock();
66e67e41 3357 return -EINVAL;
9caf0364 3358 }
66e67e41
JB		 3359 /*
3360 * Direct probe is sent to broadcast address as some APs
3361 * will not answer to direct packet in unassociated state.
3362 */
3363 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
6211dd12 3364 NULL, 0, (u32) -1, true, 0,
55de908a 3365 auth_data->bss->channel, false);
9caf0364 3366 rcu_read_unlock();
66e67e41
JB		 3367 }
3368
6211dd12 3369 if (tx_flags == 0) {
1672c0e3 3370 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3371 auth_data->timeout_started = true;
8d61ffa5 3372 run_again(sdata, auth_data->timeout);
89afe614 3373 } else {
cb236d2d
JB		 3374 auth_data->timeout =
3375 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3376 auth_data->timeout_started = true;
3377 run_again(sdata, auth_data->timeout);
1672c0e3 3378 }
66e67e41
JB		 3379
3380 return 0;
3381}
3382
3383static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3384{
3385 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3386 struct ieee80211_local *local = sdata->local;
3387
8d61ffa5 3388 sdata_assert_lock(sdata);
66e67e41 3389
66e67e41
JB		 3390 assoc_data->tries++;
3391 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3392 sdata_info(sdata, "association with %pM timed out\n",
3393 assoc_data->bss->bssid);
66e67e41
JB		 3394
3395 /*
3396 * Most likely AP is not in the range so remove the
3397 * bss struct for that AP.
3398 */
3399 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3400
3401 return -ETIMEDOUT;
3402 }
3403
bdcbd8e0
JB		 3404 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3405 assoc_data->bss->bssid, assoc_data->tries,
3406 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3407 ieee80211_send_assoc(sdata);
3408
1672c0e3
JB		 3409 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3410 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3411 assoc_data->timeout_started = true;
8d61ffa5 3412 run_again(sdata, assoc_data->timeout);
89afe614 3413 } else {
cb236d2d
JB		 3414 assoc_data->timeout =
3415 round_jiffies_up(jiffies +
3416 IEEE80211_ASSOC_TIMEOUT_LONG);
3417 assoc_data->timeout_started = true;
3418 run_again(sdata, assoc_data->timeout);
1672c0e3 3419 }
66e67e41
JB		 3420
3421 return 0;
3422}
3423
1672c0e3
JB		 3424void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3425 __le16 fc, bool acked)
3426{
3427 struct ieee80211_local *local = sdata->local;
3428
3429 sdata->u.mgd.status_fc = fc;
3430 sdata->u.mgd.status_acked = acked;
3431 sdata->u.mgd.status_received = true;
3432
3433 ieee80211_queue_work(&local->hw, &sdata->work);
3434}
3435
1fa57d01 3436void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3437{
9c6bd790 3438 struct ieee80211_local *local = sdata->local;
1fa57d01 3439 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3440
8d61ffa5 3441 sdata_lock(sdata);
77fdaa12 3442
1672c0e3
JB		 3443 if (ifmgd->status_received) {
3444 __le16 fc = ifmgd->status_fc;
3445 bool status_acked = ifmgd->status_acked;
3446
3447 ifmgd->status_received = false;
3448 if (ifmgd->auth_data &&
3449 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3450 if (status_acked) {
3451 ifmgd->auth_data->timeout =
3452 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3453 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3454 } else {
3455 ifmgd->auth_data->timeout = jiffies - 1;
3456 }
89afe614 3457 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3458 } else if (ifmgd->assoc_data &&
3459 (ieee80211_is_assoc_req(fc) ||
3460 ieee80211_is_reassoc_req(fc))) {
3461 if (status_acked) {
3462 ifmgd->assoc_data->timeout =
3463 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3464 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3465 } else {
3466 ifmgd->assoc_data->timeout = jiffies - 1;
3467 }
89afe614 3468 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3469 }
3470 }
3471
89afe614 3472 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3473 time_after(jiffies, ifmgd->auth_data->timeout)) {
3474 if (ifmgd->auth_data->done) {
3475 /*
3476 * ok ... we waited for assoc but userspace didn't,
3477 * so let's just kill the auth data
3478 */
3479 ieee80211_destroy_auth_data(sdata, false);
3480 } else if (ieee80211_probe_auth(sdata)) {
3481 u8 bssid[ETH_ALEN];
3482
3483 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3484
3485 ieee80211_destroy_auth_data(sdata, false);
3486
6ff57cf8 3487 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3488 }
89afe614 3489 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3490 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3491
89afe614 3492 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3493 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3494 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3495 ieee80211_do_assoc(sdata)) {
959867fa 3496 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3497
3498 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3499 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3500 }
89afe614 3501 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3502 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3503
392b9ffb 3504 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3505 ifmgd->associated) {
a43abf29 3506 u8 bssid[ETH_ALEN];
72a8a3ed 3507 int max_tries;
a43abf29 3508
0c1ad2ca 3509 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3510
72a8a3ed 3511 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3512 max_tries = max_nullfunc_tries;
72a8a3ed 3513 else
180205bd 3514 max_tries = max_probe_tries;
72a8a3ed 3515
4e5ff376
FF		 3516 /* ACK received for nullfunc probing frame */
3517 if (!ifmgd->probe_send_count)
3518 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3519 else if (ifmgd->nullfunc_failed) {
3520 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3521 mlme_dbg(sdata,
3522 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3523 bssid, ifmgd->probe_send_count,
3524 max_tries);
04ac3c0e
FF		 3525 ieee80211_mgd_probe_ap_send(sdata);
3526 } else {
bdcbd8e0
JB		 3527 mlme_dbg(sdata,
3528 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3529 bssid);
95acac61 3530 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3531 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3532 false);
04ac3c0e
FF		 3533 }
3534 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3535 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3536 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3537 mlme_dbg(sdata,
3538 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3539 bssid, probe_wait_ms);
95acac61 3540 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3541 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3542 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3543 mlme_dbg(sdata,
3544 "No probe response from AP %pM after %dms, try %d/%i\n",
3545 bssid, probe_wait_ms,
3546 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3547 ieee80211_mgd_probe_ap_send(sdata);
3548 } else {
b291ba11
JB		 3549 /*
3550 * We actually lost the connection ... or did we?
3551 * Let's make sure!
3552 */
b38afa87
BG		 3553 wiphy_debug(local->hw.wiphy,
3554 "%s: No probe response from AP %pM"
3555 " after %dms, disconnecting.\n",
3556 sdata->name,
180205bd 3557 bssid, probe_wait_ms);
04ac3c0e 3558
95acac61 3559 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3560 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3561 }
3562 }
3563
8d61ffa5 3564 sdata_unlock(sdata);
f0706e82
JB		 3565}
3566
b291ba11
JB		 3567static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3568{
3569 struct ieee80211_sub_if_data *sdata =
3570 (struct ieee80211_sub_if_data *) data;
3571 struct ieee80211_local *local = sdata->local;
3572
3573 if (local->quiescing)
3574 return;
3575
e5593f56
MK		 3576 if (sdata->vif.csa_active)
3577 return;
3578
682bd38b 3579 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3580 ieee80211_queue_work(&sdata->local->hw,
3581 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3582}
3583
3584static void ieee80211_sta_conn_mon_timer(unsigned long data)
3585{
3586 struct ieee80211_sub_if_data *sdata =
3587 (struct ieee80211_sub_if_data *) data;
3588 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3589 struct ieee80211_local *local = sdata->local;
3590
3591 if (local->quiescing)
3592 return;
3593
e5593f56
MK		 3594 if (sdata->vif.csa_active)
3595 return;
3596
42935eca 3597 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3598}
3599
3600static void ieee80211_sta_monitor_work(struct work_struct *work)
3601{
3602 struct ieee80211_sub_if_data *sdata =
3603 container_of(work, struct ieee80211_sub_if_data,
3604 u.mgd.monitor_work);
3605
3606 ieee80211_mgd_probe_ap(sdata, false);
3607}
3608
9c6bd790
JB		 3609static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3610{
494f1fe5
EP		 3611 u32 flags;
3612
ad935687 3613 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3614 __ieee80211_stop_poll(sdata);
ad935687 3615
b291ba11 3616 /* let's probe the connection once */
494f1fe5
EP		 3617 flags = sdata->local->hw.flags;
3618 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3619 ieee80211_queue_work(&sdata->local->hw,
3620 &sdata->u.mgd.monitor_work);
b291ba11 3621 /* and do all the other regular work too */
64592c8f 3622 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3623 }
9c6bd790 3624}
f0706e82 3625
b8360ab8 3626#ifdef CONFIG_PM
1a1cb744
JB		 3627void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3628{
3629 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3630 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3631
3632 sdata_lock(sdata);
3633
c52666ae
EG		 3634 if (ifmgd->auth_data || ifmgd->assoc_data) {
3635 const u8 *bssid = ifmgd->auth_data ?
3636 ifmgd->auth_data->bss->bssid :
3637 ifmgd->assoc_data->bss->bssid;
3638
1a1cb744 3639 /*
c52666ae
EG		 3640 * If we are trying to authenticate / associate while suspending,
3641 * cfg80211 won't know and won't actually abort those attempts,
3642 * thus we need to do that ourselves.
1a1cb744 3643 */
c52666ae 3644 ieee80211_send_deauth_disassoc(sdata, bssid,
1a1cb744
JB		 3645 IEEE80211_STYPE_DEAUTH,
3646 WLAN_REASON_DEAUTH_LEAVING,
3647 false, frame_buf);
c52666ae
EG		 3648 if (ifmgd->assoc_data)
3649 ieee80211_destroy_assoc_data(sdata, false);
3650 if (ifmgd->auth_data)
3651 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 3652 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3653 IEEE80211_DEAUTH_FRAME_LEN);
3654 }
3655
3656 sdata_unlock(sdata);
3657}
3658
b8360ab8
JB		 3659void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3660{
3661 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3662
8d61ffa5 3663 sdata_lock(sdata);
b8360ab8 3664 if (!ifmgd->associated) {
8d61ffa5 3665 sdata_unlock(sdata);
b8360ab8
JB		 3666 return;
3667 }
3668
3669 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3670 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3671 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3672 ieee80211_sta_connection_lost(sdata,
3673 ifmgd->associated->bssid,
3674 WLAN_REASON_UNSPECIFIED,
3675 true);
8d61ffa5 3676 sdata_unlock(sdata);
b8360ab8
JB		 3677 return;
3678 }
8d61ffa5 3679 sdata_unlock(sdata);
b8360ab8
JB		 3680}
3681#endif
3682
9c6bd790
JB		 3683/* interface setup */
3684void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3685{
46900298 3686 struct ieee80211_if_managed *ifmgd;
988c0f72 3687
46900298 3688 ifmgd = &sdata->u.mgd;
b291ba11 3689 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3690 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3691 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3692 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3693 INIT_WORK(&ifmgd->csa_connection_drop_work,
3694 ieee80211_csa_connection_drop_work);
687da132 3695 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
46900298 3696 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3697 (unsigned long) sdata);
b291ba11
JB		 3698 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3699 (unsigned long) sdata);
3700 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3701 (unsigned long) sdata);
46900298 3702 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3703 (unsigned long) sdata);
9c6bd790 3704
ab1faead 3705 ifmgd->flags = 0;
1478acb3 3706 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 3707 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
3708 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 3709 ifmgd->p2p_noa_index = -1;
bbbdff9e 3710
0f78231b
JB		 3711 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3712 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3713 else
3714 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3715}
3716
77fdaa12
JB		 3717/* scan finished notification */
3718void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3719{
31ee67a1 3720 struct ieee80211_sub_if_data *sdata;
60f8b39c 3721
77fdaa12
JB		 3722 /* Restart STA timers */
3723 rcu_read_lock();
370bd005
BG		 3724 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3725 if (ieee80211_sdata_running(sdata))
3726 ieee80211_restart_sta_timer(sdata);
3727 }
77fdaa12
JB		 3728 rcu_read_unlock();
3729}
60f8b39c 3730
77fdaa12
JB		 3731int ieee80211_max_network_latency(struct notifier_block *nb,
3732 unsigned long data, void *dummy)
3733{
3734 s32 latency_usec = (s32) data;
3735 struct ieee80211_local *local =
3736 container_of(nb, struct ieee80211_local,
3737 network_latency_notifier);
1fa6f4af 3738
77fdaa12
JB		 3739 mutex_lock(&local->iflist_mtx);
3740 ieee80211_recalc_ps(local, latency_usec);
3741 mutex_unlock(&local->iflist_mtx);
dfe67012 3742
8bd811aa 3743 return NOTIFY_OK;
9c6bd790
JB		 3744}
3745
f2d9d270
JB		 3746static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3747 struct cfg80211_bss *cbss)
3748{
3749 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3750 const u8 *ht_cap_ie, *vht_cap_ie;
3751 const struct ieee80211_ht_cap *ht_cap;
3752 const struct ieee80211_vht_cap *vht_cap;
3753 u8 chains = 1;
3754
3755 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3756 return chains;
3757
9caf0364 3758 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3759 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3760 ht_cap = (void *)(ht_cap_ie + 2);
3761 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3762 /*
3763 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3764 * "Tx Unequal Modulation Supported" fields.
3765 */
3766 }
3767
3768 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3769 return chains;
3770
9caf0364 3771 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3772 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3773 u8 nss;
3774 u16 tx_mcs_map;
3775
3776 vht_cap = (void *)(vht_cap_ie + 2);
3777 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3778 for (nss = 8; nss > 0; nss--) {
3779 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3780 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3781 break;
3782 }
3783 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3784 chains = max(chains, nss);
3785 }
3786
3787 return chains;
3788}
3789
b17166a7
JB		 3790static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3791 struct cfg80211_bss *cbss)
a1cf775d
JB		 3792{
3793 struct ieee80211_local *local = sdata->local;
3794 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3795 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3796 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3797 struct ieee80211_supported_band *sband;
4bf88530 3798 struct cfg80211_chan_def chandef;
f2d9d270 3799 int ret;
a1cf775d 3800
24398e39
JB		 3801 sband = local->hw.wiphy->bands[cbss->channel->band];
3802
f2d9d270
JB		 3803 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3804 IEEE80211_STA_DISABLE_80P80MHZ |
3805 IEEE80211_STA_DISABLE_160MHZ);
3806
9caf0364
JB		 3807 rcu_read_lock();
3808
f2d9d270
JB		 3809 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3810 sband->ht_cap.ht_supported) {
08e6effa 3811 const u8 *ht_oper_ie, *ht_cap;
24398e39 3812
9caf0364 3813 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3814 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3815 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa
JB		 3816
3817 ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
3818 if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
3819 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3820 ht_oper = NULL;
3821 }
24398e39
JB		 3822 }
3823
f2d9d270
JB		 3824 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3825 sband->vht_cap.vht_supported) {
08e6effa 3826 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 3827
9caf0364
JB		 3828 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3829 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3830 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3831 vht_oper = (void *)(vht_oper_ie + 2);
3832 if (vht_oper && !ht_oper) {
3833 vht_oper = NULL;
bdcbd8e0 3834 sdata_info(sdata,
f2d9d270 3835 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 3836 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3837 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 3838 }
08e6effa
JB		 3839
3840 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
3841 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
3842 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3843 vht_oper = NULL;
3844 }
24398e39
JB		 3845 }
3846
f2d9d270
JB		 3847 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3848 cbss->channel,
3849 ht_oper, vht_oper,
5cdaed1e 3850 &chandef, false);
04ecd257 3851
f2d9d270
JB		 3852 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3853 local->rx_chains);
24398e39 3854
9caf0364
JB		 3855 rcu_read_unlock();
3856
04ecd257
JB		 3857 /* will change later if needed */
3858 sdata->smps_mode = IEEE80211_SMPS_OFF;
3859
34a3740d 3860 mutex_lock(&local->mtx);
f2d9d270
JB		 3861 /*
3862 * If this fails (possibly due to channel context sharing
3863 * on incompatible channels, e.g. 80+80 and 160 sharing the
3864 * same control channel) try to use a smaller bandwidth.
3865 */
3866 ret = ieee80211_vif_use_channel(sdata, &chandef,
3867 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 3868
3869 /* don't downgrade for 5 and 10 MHz channels, though. */
3870 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
3871 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 3872 goto out;
0418a445 3873
d601cd8d 3874 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 3875 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 3876 ret = ieee80211_vif_use_channel(sdata, &chandef,
3877 IEEE80211_CHANCTX_SHARED);
3878 }
34a3740d
JB		 3879 out:
3880 mutex_unlock(&local->mtx);
f2d9d270 3881 return ret;
b17166a7
JB		 3882}
3883
3884static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3885 struct cfg80211_bss *cbss, bool assoc)
3886{
3887 struct ieee80211_local *local = sdata->local;
3888 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3889 struct ieee80211_bss *bss = (void *)cbss->priv;
3890 struct sta_info *new_sta = NULL;
3891 bool have_sta = false;
3892 int err;
3893
3894 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3895 return -EINVAL;
3896
3897 if (assoc) {
3898 rcu_read_lock();
3899 have_sta = sta_info_get(sdata, cbss->bssid);
3900 rcu_read_unlock();
3901 }
3902
3903 if (!have_sta) {
3904 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3905 if (!new_sta)
3906 return -ENOMEM;
3907 }
13e0c8e3 3908 if (new_sta) {
5d6a1b06
JB		 3909 u32 rates = 0, basic_rates = 0;
3910 bool have_higher_than_11mbit;
3911 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 3912 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 3913 struct ieee80211_supported_band *sband;
8cef2c9d 3914 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 3915 int shift;
3916 u32 rate_flags;
b17166a7
JB		 3917
3918 sband = local->hw.wiphy->bands[cbss->channel->band];
3919
3920 err = ieee80211_prep_channel(sdata, cbss);
3921 if (err) {
3922 sta_info_free(local, new_sta);
2103dec1 3923 return -EINVAL;
b17166a7 3924 }
2103dec1
SW		 3925 shift = ieee80211_vif_get_shift(&sdata->vif);
3926
3927 rcu_read_lock();
3928 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3929 if (WARN_ON(!chanctx_conf)) {
3930 rcu_read_unlock();
c368ddaa 3931 sta_info_free(local, new_sta);
2103dec1
SW		 3932 return -EINVAL;
3933 }
3934 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
3935 rcu_read_unlock();
5d6a1b06 3936
5d6a1b06
JB		 3937 ieee80211_get_rates(sband, bss->supp_rates,
3938 bss->supp_rates_len,
3939 &rates, &basic_rates,
3940 &have_higher_than_11mbit,
2103dec1
SW		 3941 &min_rate, &min_rate_index,
3942 shift, rate_flags);
5d6a1b06
JB		 3943
3944 /*
3945 * This used to be a workaround for basic rates missing
3946 * in the association response frame. Now that we no
3947 * longer use the basic rates from there, it probably
3948 * doesn't happen any more, but keep the workaround so
3949 * in case some *other* APs are buggy in different ways
3950 * we can connect -- with a warning.
3951 */
3952 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3953 sdata_info(sdata,
3954 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3955 basic_rates = BIT(min_rate_index);
3956 }
3957
13e0c8e3 3958 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3959 sdata->vif.bss_conf.basic_rates = basic_rates;
3960
3961 /* cf. IEEE 802.11 9.2.12 */
55de908a 3962 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3963 have_higher_than_11mbit)
3964 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3965 else
3966 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3967
3968 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3969
8c358bcd
JB		 3970 /* set timing information */
3971 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 3972 rcu_read_lock();
ef429dad
JB		 3973 ies = rcu_dereference(cbss->beacon_ies);
3974 if (ies) {
3975 const u8 *tim_ie;
3976
3977 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3978 sdata->vif.bss_conf.sync_device_ts =
3979 bss->device_ts_beacon;
3980 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
3981 ies->data, ies->len);
3982 if (tim_ie && tim_ie[1] >= 2)
3983 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
3984 else
3985 sdata->vif.bss_conf.sync_dtim_count = 0;
3986 } else if (!(local->hw.flags &
3987 IEEE80211_HW_TIMING_BEACON_ONLY)) {
3988 ies = rcu_dereference(cbss->proberesp_ies);
3989 /* must be non-NULL since beacon IEs were NULL */
3990 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3991 sdata->vif.bss_conf.sync_device_ts =
3992 bss->device_ts_presp;
3993 sdata->vif.bss_conf.sync_dtim_count = 0;
3994 } else {
3995 sdata->vif.bss_conf.sync_tsf = 0;
3996 sdata->vif.bss_conf.sync_device_ts = 0;
3997 sdata->vif.bss_conf.sync_dtim_count = 0;
3998 }
8cef2c9d 3999 rcu_read_unlock();
8c358bcd
JB		 4000
4001 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 4002 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 4003 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4004 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 4005
4006 if (assoc)
13e0c8e3 4007 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 4008
13e0c8e3
JB		 4009 err = sta_info_insert(new_sta);
4010 new_sta = NULL;
a1cf775d 4011 if (err) {
bdcbd8e0
JB		 4012 sdata_info(sdata,
4013 "failed to insert STA entry for the AP (error %d)\n",
4014 err);
a1cf775d
JB		 4015 return err;
4016 }
4017 } else
b203ca39 4018 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 4019
4020 return 0;
4021}
4022
77fdaa12
JB		 4023/* config hooks */
4024int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4025 struct cfg80211_auth_request *req)
9c6bd790 4026{
66e67e41
JB		 4027 struct ieee80211_local *local = sdata->local;
4028 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4029 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4030 u16 auth_alg;
66e67e41
JB		 4031 int err;
4032
4033 /* prepare auth data structure */
9c6bd790 4034
77fdaa12
JB		 4035 switch (req->auth_type) {
4036 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4037 auth_alg = WLAN_AUTH_OPEN;
4038 break;
4039 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4040 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4041 return -EOPNOTSUPP;
77fdaa12
JB		 4042 auth_alg = WLAN_AUTH_SHARED_KEY;
4043 break;
4044 case NL80211_AUTHTYPE_FT:
4045 auth_alg = WLAN_AUTH_FT;
4046 break;
4047 case NL80211_AUTHTYPE_NETWORK_EAP:
4048 auth_alg = WLAN_AUTH_LEAP;
4049 break;
6b8ece3a
JM		 4050 case NL80211_AUTHTYPE_SAE:
4051 auth_alg = WLAN_AUTH_SAE;
4052 break;
77fdaa12
JB		 4053 default:
4054 return -EOPNOTSUPP;
60f8b39c 4055 }
77fdaa12 4056
6b8ece3a
JM		 4057 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4058 req->ie_len, GFP_KERNEL);
66e67e41 4059 if (!auth_data)
9c6bd790 4060 return -ENOMEM;
77fdaa12 4061
66e67e41 4062 auth_data->bss = req->bss;
77fdaa12 4063
6b8ece3a
JM		 4064 if (req->sae_data_len >= 4) {
4065 __le16 *pos = (__le16 *) req->sae_data;
4066 auth_data->sae_trans = le16_to_cpu(pos[0]);
4067 auth_data->sae_status = le16_to_cpu(pos[1]);
4068 memcpy(auth_data->data, req->sae_data + 4,
4069 req->sae_data_len - 4);
4070 auth_data->data_len += req->sae_data_len - 4;
4071 }
4072
77fdaa12 4073 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4074 memcpy(&auth_data->data[auth_data->data_len],
4075 req->ie, req->ie_len);
4076 auth_data->data_len += req->ie_len;
9c6bd790 4077 }
77fdaa12 4078
fffd0934 4079 if (req->key && req->key_len) {
66e67e41
JB		 4080 auth_data->key_len = req->key_len;
4081 auth_data->key_idx = req->key_idx;
4082 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4083 }
4084
66e67e41 4085 auth_data->algorithm = auth_alg;
60f8b39c 4086
66e67e41 4087 /* try to authenticate/probe */
2a33bee2 4088
66e67e41
JB		 4089 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4090 ifmgd->assoc_data) {
4091 err = -EBUSY;
4092 goto err_free;
2a33bee2
GE		 4093 }
4094
66e67e41
JB		 4095 if (ifmgd->auth_data)
4096 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4097
66e67e41
JB		 4098 /* prep auth_data so we don't go into idle on disassoc */
4099 ifmgd->auth_data = auth_data;
af6b6374 4100
7b119dc0
JB		 4101 if (ifmgd->associated) {
4102 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4103
4104 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4105 WLAN_REASON_UNSPECIFIED,
4106 false, frame_buf);
4107
6ff57cf8
JB		 4108 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4109 sizeof(frame_buf));
7b119dc0 4110 }
af6b6374 4111
bdcbd8e0 4112 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4113
a1cf775d
JB		 4114 err = ieee80211_prep_connection(sdata, req->bss, false);
4115 if (err)
66e67e41 4116 goto err_clear;
af6b6374 4117
66e67e41
JB		 4118 err = ieee80211_probe_auth(sdata);
4119 if (err) {
66e67e41
JB		 4120 sta_info_destroy_addr(sdata, req->bss->bssid);
4121 goto err_clear;
4122 }
4123
4124 /* hold our own reference */
5b112d3d 4125 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4126 return 0;
66e67e41
JB		 4127
4128 err_clear:
3d2abdfd
EP		 4129 memset(ifmgd->bssid, 0, ETH_ALEN);
4130 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4131 ifmgd->auth_data = NULL;
4132 err_free:
4133 kfree(auth_data);
66e67e41 4134 return err;
af6b6374
JB		 4135}
4136
095d81ce
JB		 4137static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4138 const u8 *wmm_param, int len)
4139{
4140 const u8 *pos;
4141 size_t left;
4142
4143 if (len < 8)
4144 return false;
4145
4146 if (wmm_param[5] != 1 /* version */)
4147 return false;
4148
4149 pos = wmm_param + 8;
4150 left = len - 8;
4151
4152 for (; left >= 4; left -= 4, pos += 4) {
4153 u8 aifsn = pos[0] & 0x0f;
4154 u8 ecwmin = pos[1] & 0x0f;
4155 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4156 int aci = (pos[0] >> 5) & 0x03;
4157
4158 if (aifsn < 2) {
4159 sdata_info(sdata,
4160 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4161 aifsn, aci);
4162 return false;
4163 }
4164 if (ecwmin > ecwmax) {
4165 sdata_info(sdata,
4166 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4167 ecwmin, ecwmax, aci);
4168 return false;
4169 }
4170 }
4171
4172 return true;
4173}
4174
77fdaa12
JB		 4175int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4176 struct cfg80211_assoc_request *req)
f0706e82 4177{
66e67e41 4178 struct ieee80211_local *local = sdata->local;
77fdaa12 4179 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4180 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4181 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4182 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4183 struct ieee80211_supported_band *sband;
b08fbbd8 4184 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4185 int i, err;
f0706e82 4186
66e67e41
JB		 4187 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4188 if (!assoc_data)
4189 return -ENOMEM;
4190
9caf0364
JB		 4191 rcu_read_lock();
4192 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4193 if (!ssidie) {
4194 rcu_read_unlock();
4195 kfree(assoc_data);
4196 return -EINVAL;
4197 }
4198 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4199 assoc_data->ssid_len = ssidie[1];
4200 rcu_read_unlock();
4201
7b119dc0
JB		 4202 if (ifmgd->associated) {
4203 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4204
4205 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4206 WLAN_REASON_UNSPECIFIED,
4207 false, frame_buf);
4208
6ff57cf8
JB		 4209 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4210 sizeof(frame_buf));
7b119dc0 4211 }
66e67e41
JB		 4212
4213 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4214 err = -EBUSY;
4215 goto err_free;
af6b6374 4216 }
77fdaa12 4217
66e67e41
JB		 4218 if (ifmgd->assoc_data) {
4219 err = -EBUSY;
4220 goto err_free;
4221 }
77fdaa12 4222
66e67e41
JB		 4223 if (ifmgd->auth_data) {
4224 bool match;
4225
4226 /* keep sta info, bssid if matching */
b203ca39 4227 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4228 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4229 }
4230
66e67e41 4231 /* prepare assoc data */
095d81ce 4232
d8ec4433
JO		 4233 ifmgd->beacon_crc_valid = false;
4234
095d81ce
JB		 4235 assoc_data->wmm = bss->wmm_used &&
4236 (local->hw.queues >= IEEE80211_NUM_ACS);
4237 if (assoc_data->wmm) {
4238 /* try to check validity of WMM params IE */
4239 const struct cfg80211_bss_ies *ies;
4240 const u8 *wp, *start, *end;
4241
4242 rcu_read_lock();
4243 ies = rcu_dereference(req->bss->ies);
4244 start = ies->data;
4245 end = start + ies->len;
4246
4247 while (true) {
4248 wp = cfg80211_find_vendor_ie(
4249 WLAN_OUI_MICROSOFT,
4250 WLAN_OUI_TYPE_MICROSOFT_WMM,
4251 start, end - start);
4252 if (!wp)
4253 break;
4254 start = wp + wp[1] + 2;
4255 /* if this IE is too short, try the next */
4256 if (wp[1] <= 4)
4257 continue;
4258 /* if this IE is WMM params, we found what we wanted */
4259 if (wp[6] == 1)
4260 break;
4261 }
4262
4263 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4264 wp[1] - 2)) {
4265 assoc_data->wmm = false;
4266 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4267 }
4268 rcu_read_unlock();
4269 }
4270
de5036aa
JB		 4271 /*
4272 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4273 * We still associate in non-HT mode (11a/b/g) if any one of these
4274 * ciphers is configured as pairwise.
4275 * We can set this to true for non-11n hardware, that'll be checked
4276 * separately along with the peer capabilities.
4277 */
1c4cb928 4278 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4279 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4280 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4281 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4282 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4283 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4284 netdev_info(sdata->dev,
d545daba 4285 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4286 }
4287 }
77fdaa12 4288
d545daba 4289 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4290 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4291 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4292 }
ef96a842 4293
dd5ecfea
JB		 4294 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4295 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4296
4e74bfdb
JB		 4297 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4298 sband = local->hw.wiphy->bands[req->bss->channel->band];
4299 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4300 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4301 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4302 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4303 if (!bss->wmm_used &&
4304 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4305 netdev_info(sdata->dev,
4306 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4307 }
4e74bfdb 4308
d545daba
MP		 4309 /* disable VHT if we don't support it or the AP doesn't use WMM */
4310 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4311 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4312 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4313 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4314 if (!bss->wmm_used &&
4315 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4316 netdev_info(sdata->dev,
4317 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4318 }
4319
ef96a842
BG		 4320 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4321 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4322 sizeof(ifmgd->ht_capa_mask));
4323
dd5ecfea
JB		 4324 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4325 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4326 sizeof(ifmgd->vht_capa_mask));
4327
77fdaa12 4328 if (req->ie && req->ie_len) {
66e67e41
JB		 4329 memcpy(assoc_data->ie, req->ie, req->ie_len);
4330 assoc_data->ie_len = req->ie_len;
4331 }
f679f65d 4332
66e67e41 4333 assoc_data->bss = req->bss;
f679f65d 4334
af6b6374
JB		 4335 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4336 if (ifmgd->powersave)
04ecd257 4337 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4338 else
04ecd257 4339 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4340 } else
04ecd257 4341 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4342
66e67e41 4343 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4344 assoc_data->supp_rates = bss->supp_rates;
4345 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4346
9caf0364 4347 rcu_read_lock();
9dde6423
JB		 4348 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4349 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4350 assoc_data->ap_ht_param =
4351 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4352 else
a8243b72 4353 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4354 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4355 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4356 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4357 sizeof(struct ieee80211_vht_cap));
4358 else
4359 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4360 rcu_read_unlock();
63f170e0 4361
ab13315a 4362 if (bss->wmm_used && bss->uapsd_supported &&
24aa11ab
AB		 4363 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
4364 sdata->wmm_acm != 0xff) {
76f0303d 4365 assoc_data->uapsd = true;
ab13315a
KV		 4366 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4367 } else {
76f0303d 4368 assoc_data->uapsd = false;
ab13315a
KV		 4369 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4370 }
4371
77fdaa12 4372 if (req->prev_bssid)
66e67e41 4373 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4374
4375 if (req->use_mfp) {
4376 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4377 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4378 } else {
4379 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4380 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4381 }
4382
4383 if (req->crypto.control_port)
4384 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4385 else
4386 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4387
a621fa4d
JB		 4388 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4389 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4390 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4391 sdata->vif.type);
a621fa4d 4392
66e67e41
JB		 4393 /* kick off associate process */
4394
4395 ifmgd->assoc_data = assoc_data;
826262c3 4396 ifmgd->dtim_period = 0;
989c6505 4397 ifmgd->have_beacon = false;
66e67e41 4398
a1cf775d
JB		 4399 err = ieee80211_prep_connection(sdata, req->bss, true);
4400 if (err)
4401 goto err_clear;
66e67e41 4402
c65dd147
EG		 4403 rcu_read_lock();
4404 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4405
c65dd147
EG		 4406 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4407 !beacon_ies) {
4408 /*
4409 * Wait up to one beacon interval ...
4410 * should this be more if we miss one?
4411 */
4412 sdata_info(sdata, "waiting for beacon from %pM\n",
4413 ifmgd->bssid);
4414 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4415 assoc_data->timeout_started = true;
c65dd147
EG		 4416 assoc_data->need_beacon = true;
4417 } else if (beacon_ies) {
4418 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4419 beacon_ies->data,
4420 beacon_ies->len);
ef429dad
JB		 4421 u8 dtim_count = 0;
4422
c65dd147
EG		 4423 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4424 const struct ieee80211_tim_ie *tim;
4425 tim = (void *)(tim_ie + 2);
4426 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4427 dtim_count = tim->dtim_count;
826262c3 4428 }
989c6505 4429 ifmgd->have_beacon = true;
66e67e41 4430 assoc_data->timeout = jiffies;
89afe614 4431 assoc_data->timeout_started = true;
ef429dad
JB		 4432
4433 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4434 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4435 sdata->vif.bss_conf.sync_device_ts =
4436 bss->device_ts_beacon;
4437 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4438 }
c65dd147
EG		 4439 } else {
4440 assoc_data->timeout = jiffies;
89afe614 4441 assoc_data->timeout_started = true;
66e67e41 4442 }
c65dd147
EG		 4443 rcu_read_unlock();
4444
8d61ffa5 4445 run_again(sdata, assoc_data->timeout);
66e67e41 4446
fcff4f10
PS		 4447 if (bss->corrupt_data) {
4448 char *corrupt_type = "data";
4449 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4450 if (bss->corrupt_data &
4451 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4452 corrupt_type = "beacon and probe response";
4453 else
4454 corrupt_type = "beacon";
4455 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4456 corrupt_type = "probe response";
bdcbd8e0
JB		 4457 sdata_info(sdata, "associating with AP with corrupt %s\n",
4458 corrupt_type);
fcff4f10
PS		 4459 }
4460
8d61ffa5 4461 return 0;
66e67e41 4462 err_clear:
3d2abdfd
EP		 4463 memset(ifmgd->bssid, 0, ETH_ALEN);
4464 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4465 ifmgd->assoc_data = NULL;
4466 err_free:
4467 kfree(assoc_data);
66e67e41 4468 return err;
f0706e82
JB		 4469}
4470
77fdaa12 4471int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4472 struct cfg80211_deauth_request *req)
f0706e82 4473{
46900298 4474 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4475 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4476 bool tx = !req->local_state_change;
f0706e82 4477
c9c3a060
JB		 4478 if (ifmgd->auth_data &&
4479 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4480 sdata_info(sdata,
4481 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4482 req->bssid, req->reason_code,
4483 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4484
8c7d857c 4485 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4486 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4487 IEEE80211_STYPE_DEAUTH,
6863255b 4488 req->reason_code, tx,
37ad3888 4489 frame_buf);
86552017 4490 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4491 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4492 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4493
c9c3a060 4494 return 0;
8c7d857c
EG		 4495 }
4496
86552017
JB		 4497 if (ifmgd->associated &&
4498 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4499 sdata_info(sdata,
4500 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4501 req->bssid, req->reason_code,
4502 ieee80211_get_reason_code_string(req->reason_code));
4503
86552017
JB		 4504 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4505 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4506 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4507 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4508 return 0;
4509 }
86552017 4510
c9c3a060 4511 return -ENOTCONN;
f0706e82 4512}
84363e6e 4513
77fdaa12 4514int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4515 struct cfg80211_disassoc_request *req)
9c6bd790 4516{
77fdaa12 4517 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4518 u8 bssid[ETH_ALEN];
6ae16775 4519 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4520
8d8b261a
JB		 4521 /*
4522 * cfg80211 should catch this ... but it's racy since
4523 * we can receive a disassoc frame, process it, hand it
4524 * to cfg80211 while that's in a locked section already
4525 * trying to tell us that the user wants to disconnect.
4526 */
8d61ffa5 4527 if (ifmgd->associated != req->bss)
77fdaa12 4528 return -ENOLINK;
77fdaa12 4529
bdcbd8e0 4530 sdata_info(sdata,
dfa1ad29
CO		 4531 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4532 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4533
e69e95db 4534 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4535 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4536 req->reason_code, !req->local_state_change,
4537 frame_buf);
10f644a4 4538
6ff57cf8
JB		 4539 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4540 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4541
10f644a4
JB		 4542 return 0;
4543}
026331c4 4544
afa762f6 4545void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4546{
4547 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4548
49921859
BG		 4549 /*
4550 * Make sure some work items will not run after this,
4551 * they will not do anything but might not have been
4552 * cancelled when disconnecting.
4553 */
4554 cancel_work_sync(&ifmgd->monitor_work);
4555 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4556 cancel_work_sync(&ifmgd->request_smps_work);
4557 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4558 cancel_work_sync(&ifmgd->chswitch_work);
4559
8d61ffa5 4560 sdata_lock(sdata);
959867fa
JB		 4561 if (ifmgd->assoc_data) {
4562 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4563 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4564 cfg80211_assoc_timeout(sdata->dev, bss);
4565 }
54e4ffb2
JB		 4566 if (ifmgd->auth_data)
4567 ieee80211_destroy_auth_data(sdata, false);
4568 del_timer_sync(&ifmgd->timer);
8d61ffa5 4569 sdata_unlock(sdata);
54e4ffb2
JB		 4570}
4571
a97c13c3
JO		 4572void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4573 enum nl80211_cqm_rssi_threshold_event rssi_event,
4574 gfp_t gfp)
4575{
4576 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4577
b5878a2d
JB		 4578 trace_api_cqm_rssi_notify(sdata, rssi_event);
4579
a97c13c3
JO		 4580 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4581}
4582EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
Linux kernel - Deliverables
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