Commit | Line | Data |
---|---|---|
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> | |
d98ad83e | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
f0706e82 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
5b323edb | 15 | #include <linux/delay.h> |
f0706e82 JB |
16 | #include <linux/if_ether.h> |
17 | #include <linux/skbuff.h> | |
f0706e82 | 18 | #include <linux/if_arp.h> |
f0706e82 | 19 | #include <linux/etherdevice.h> |
d9b93842 | 20 | #include <linux/moduleparam.h> |
d0709a65 | 21 | #include <linux/rtnetlink.h> |
e8db0be1 | 22 | #include <linux/pm_qos.h> |
d91f36db | 23 | #include <linux/crc32.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
bc3b2d7f | 25 | #include <linux/export.h> |
f0706e82 | 26 | #include <net/mac80211.h> |
472dbc45 | 27 | #include <asm/unaligned.h> |
60f8b39c | 28 | |
f0706e82 | 29 | #include "ieee80211_i.h" |
24487981 | 30 | #include "driver-ops.h" |
2c8dccc7 JB |
31 | #include "rate.h" |
32 | #include "led.h" | |
f0706e82 | 33 | |
1672c0e3 | 34 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 35 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
36 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) |
37 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
38 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
39 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
cb236d2d | 40 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
41 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
42 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 43 | |
180205bd BG |
44 | static int max_nullfunc_tries = 2; |
45 | module_param(max_nullfunc_tries, int, 0644); | |
46 | MODULE_PARM_DESC(max_nullfunc_tries, | |
47 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
48 | ||
49 | static int max_probe_tries = 5; | |
50 | module_param(max_probe_tries, int, 0644); | |
51 | MODULE_PARM_DESC(max_probe_tries, | |
52 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
53 | |
54 | /* | |
7ccc8bd7 FF |
55 | * Beacon loss timeout is calculated as N frames times the |
56 | * advertised beacon interval. This may need to be somewhat | |
57 | * higher than what hardware might detect to account for | |
58 | * delays in the host processing frames. But since we also | |
59 | * probe on beacon miss before declaring the connection lost | |
60 | * default to what we want. | |
b291ba11 | 61 | */ |
59c1ec2b BG |
62 | static int beacon_loss_count = 7; |
63 | module_param(beacon_loss_count, int, 0644); | |
64 | MODULE_PARM_DESC(beacon_loss_count, | |
65 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 66 | |
b291ba11 JB |
67 | /* |
68 | * Time the connection can be idle before we probe | |
69 | * it to see if we can still talk to the AP. | |
70 | */ | |
d1c5091f | 71 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
72 | /* |
73 | * Time we wait for a probe response after sending | |
74 | * a probe request because of beacon loss or for | |
75 | * checking the connection still works. | |
76 | */ | |
180205bd BG |
77 | static int probe_wait_ms = 500; |
78 | module_param(probe_wait_ms, int, 0644); | |
79 | MODULE_PARM_DESC(probe_wait_ms, | |
80 | "Maximum time(ms) to wait for probe response" | |
81 | " before disconnecting (reason 4)."); | |
f0706e82 | 82 | |
17e4ec14 JM |
83 | /* |
84 | * Weight given to the latest Beacon frame when calculating average signal | |
85 | * strength for Beacon frames received in the current BSS. This must be | |
86 | * between 1 and 15. | |
87 | */ | |
88 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
89 | ||
391a200a JM |
90 | /* |
91 | * How many Beacon frames need to have been used in average signal strength | |
92 | * before starting to indicate signal change events. | |
93 | */ | |
94 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
95 | ||
ca386f31 JB |
96 | /* |
97 | * We can have multiple work items (and connection probing) | |
98 | * scheduling this timer, but we need to take care to only | |
99 | * reschedule it when it should fire _earlier_ than it was | |
100 | * asked for before, or if it's not pending right now. This | |
101 | * function ensures that. Note that it then is required to | |
102 | * run this function for all timeouts after the first one | |
103 | * has happened -- the work that runs from this timer will | |
104 | * do that. | |
105 | */ | |
8d61ffa5 JB |
106 | static void run_again(struct ieee80211_sub_if_data *sdata, |
107 | unsigned long timeout) | |
ca386f31 | 108 | { |
8d61ffa5 | 109 | sdata_assert_lock(sdata); |
ca386f31 | 110 | |
8d61ffa5 JB |
111 | if (!timer_pending(&sdata->u.mgd.timer) || |
112 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
113 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
114 | } |
115 | ||
d3a910a8 | 116 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 117 | { |
c1288b12 | 118 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
119 | return; |
120 | ||
30686bf7 | 121 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
7eeff74c JB |
122 | return; |
123 | ||
b291ba11 | 124 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 125 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
126 | } |
127 | ||
be099e82 LR |
128 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
129 | { | |
0c699c3a LR |
130 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
131 | ||
8628172f SG |
132 | if (unlikely(!sdata->u.mgd.associated)) |
133 | return; | |
134 | ||
448cd2e2 EP |
135 | ifmgd->probe_send_count = 0; |
136 | ||
30686bf7 | 137 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
be099e82 LR |
138 | return; |
139 | ||
140 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
141 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
142 | } | |
143 | ||
5484e237 | 144 | static int ecw2cw(int ecw) |
60f8b39c | 145 | { |
5484e237 | 146 | return (1 << ecw) - 1; |
60f8b39c JB |
147 | } |
148 | ||
6565ec9b JB |
149 | static u32 |
150 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
151 | struct ieee80211_supported_band *sband, | |
152 | struct ieee80211_channel *channel, | |
53b954ee | 153 | const struct ieee80211_ht_cap *ht_cap, |
6565ec9b JB |
154 | const struct ieee80211_ht_operation *ht_oper, |
155 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 156 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 157 | { |
5cdaed1e | 158 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b | 159 | struct cfg80211_chan_def vht_chandef; |
179b8fc7 | 160 | struct ieee80211_sta_ht_cap sta_ht_cap; |
6565ec9b JB |
161 | u32 ht_cfreq, ret; |
162 | ||
179b8fc7 CRI |
163 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); |
164 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
165 | ||
6565ec9b JB |
166 | chandef->chan = channel; |
167 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
168 | chandef->center_freq1 = channel->center_freq; | |
169 | chandef->center_freq2 = 0; | |
170 | ||
179b8fc7 | 171 | if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) { |
6565ec9b JB |
172 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
173 | goto out; | |
174 | } | |
175 | ||
176 | chandef->width = NL80211_CHAN_WIDTH_20; | |
177 | ||
53b954ee EP |
178 | if (!(ht_cap->cap_info & |
179 | cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { | |
f3000e1b | 180 | ret = IEEE80211_STA_DISABLE_40MHZ; |
7e6225a1 | 181 | vht_chandef = *chandef; |
53b954ee EP |
182 | goto out; |
183 | } | |
184 | ||
6565ec9b JB |
185 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, |
186 | channel->band); | |
187 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 188 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
189 | /* |
190 | * It's possible that some APs are confused here; | |
191 | * Netgear WNDR3700 sometimes reports 4 higher than | |
192 | * the actual channel in association responses, but | |
193 | * since we look at probe response/beacon data here | |
194 | * it should be OK. | |
195 | */ | |
5cdaed1e JB |
196 | sdata_info(sdata, |
197 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
198 | channel->center_freq, ht_cfreq, | |
199 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
200 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
201 | goto out; | |
202 | } | |
203 | ||
204 | /* check 40 MHz support, if we have it */ | |
179b8fc7 | 205 | if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { |
6565ec9b JB |
206 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
207 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
208 | chandef->width = NL80211_CHAN_WIDTH_40; | |
209 | chandef->center_freq1 += 10; | |
210 | break; | |
211 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
212 | chandef->width = NL80211_CHAN_WIDTH_40; | |
213 | chandef->center_freq1 -= 10; | |
214 | break; | |
215 | } | |
216 | } else { | |
217 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
218 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
219 | /* also mark 40 MHz disabled */ |
220 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
221 | goto out; |
222 | } | |
223 | ||
224 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
225 | ret = IEEE80211_STA_DISABLE_VHT; | |
226 | goto out; | |
227 | } | |
228 | ||
229 | vht_chandef.chan = channel; | |
230 | vht_chandef.center_freq1 = | |
231 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
232 | channel->band); | |
233 | vht_chandef.center_freq2 = 0; | |
234 | ||
6565ec9b JB |
235 | switch (vht_oper->chan_width) { |
236 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
237 | vht_chandef.width = chandef->width; | |
cb664981 | 238 | vht_chandef.center_freq1 = chandef->center_freq1; |
6565ec9b JB |
239 | break; |
240 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
241 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
242 | break; | |
243 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
244 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
245 | break; | |
246 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
247 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
248 | vht_chandef.center_freq2 = |
249 | ieee80211_channel_to_frequency( | |
250 | vht_oper->center_freq_seg2_idx, | |
251 | channel->band); | |
6565ec9b JB |
252 | break; |
253 | default: | |
5cdaed1e | 254 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
255 | sdata_info(sdata, |
256 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
257 | vht_oper->chan_width); | |
6565ec9b JB |
258 | ret = IEEE80211_STA_DISABLE_VHT; |
259 | goto out; | |
260 | } | |
261 | ||
262 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 263 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
264 | sdata_info(sdata, |
265 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
266 | ret = IEEE80211_STA_DISABLE_VHT; |
267 | goto out; | |
268 | } | |
269 | ||
270 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
271 | ret = 0; | |
272 | goto out; | |
273 | } | |
274 | ||
275 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 276 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
277 | sdata_info(sdata, |
278 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
279 | ret = IEEE80211_STA_DISABLE_VHT; |
280 | goto out; | |
281 | } | |
282 | ||
283 | *chandef = vht_chandef; | |
284 | ||
285 | ret = 0; | |
286 | ||
287 | out: | |
963a1852 JB |
288 | /* |
289 | * When tracking the current AP, don't do any further checks if the | |
290 | * new chandef is identical to the one we're currently using for the | |
291 | * connection. This keeps us from playing ping-pong with regulatory, | |
292 | * without it the following can happen (for example): | |
293 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
294 | * - AP advertises regdom US | |
295 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
296 | * - the code below detects an unsupported channel, downgrades, and | |
297 | * we disconnect from the AP in the caller | |
298 | * - disconnect causes CRDA to reload world regdomain and the game | |
299 | * starts anew. | |
300 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
301 | * | |
302 | * It seems possible that there are still scenarios with CSA or real | |
303 | * bandwidth changes where a this could happen, but those cases are | |
304 | * less common and wouldn't completely prevent using the AP. | |
305 | */ | |
306 | if (tracking && | |
307 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
308 | return ret; | |
309 | ||
586e01ed JB |
310 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
311 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
312 | vht_chandef = *chandef; | |
313 | ||
ddfe49b4 JB |
314 | /* |
315 | * Ignore the DISABLED flag when we're already connected and only | |
316 | * tracking the APs beacon for bandwidth changes - otherwise we | |
317 | * might get disconnected here if we connect to an AP, update our | |
318 | * regulatory information based on the AP's country IE and the | |
319 | * information we have is wrong/outdated and disables the channel | |
320 | * that we're actually using for the connection to the AP. | |
321 | */ | |
6565ec9b | 322 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
323 | tracking ? 0 : |
324 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
325 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
326 | ret = IEEE80211_STA_DISABLE_HT | | |
327 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 328 | break; |
6565ec9b JB |
329 | } |
330 | ||
e6b7cde4 | 331 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
332 | } |
333 | ||
5cdaed1e | 334 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
335 | sdata_info(sdata, |
336 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
337 | ||
338 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
339 | return ret; | |
340 | } | |
341 | ||
30eb1dc2 JB |
342 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
343 | struct sta_info *sta, | |
53b954ee | 344 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
345 | const struct ieee80211_ht_operation *ht_oper, |
346 | const struct ieee80211_vht_operation *vht_oper, | |
347 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
348 | { |
349 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 350 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 351 | struct ieee80211_supported_band *sband; |
55de908a | 352 | struct ieee80211_channel *chan; |
30eb1dc2 | 353 | struct cfg80211_chan_def chandef; |
9ed6bcce | 354 | u16 ht_opmode; |
30eb1dc2 JB |
355 | u32 flags; |
356 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
357 | int ret; | |
d5522e03 | 358 | |
30eb1dc2 JB |
359 | /* if HT was/is disabled, don't track any bandwidth changes */ |
360 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
361 | return 0; |
362 | ||
30eb1dc2 JB |
363 | /* don't check VHT if we associated as non-VHT station */ |
364 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
365 | vht_oper = NULL; | |
366 | ||
367 | if (WARN_ON_ONCE(!sta)) | |
368 | return -EINVAL; | |
369 | ||
017b45bb AA |
370 | /* |
371 | * if bss configuration changed store the new one - | |
372 | * this may be applicable even if channel is identical | |
373 | */ | |
374 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
375 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
376 | *changed |= BSS_CHANGED_HT; | |
377 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
378 | } | |
379 | ||
f2d9330e | 380 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 381 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 382 | |
30eb1dc2 | 383 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
53b954ee EP |
384 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
385 | ht_cap, ht_oper, vht_oper, | |
386 | &chandef, true); | |
30eb1dc2 JB |
387 | |
388 | /* | |
389 | * Downgrade the new channel if we associated with restricted | |
390 | * capabilities. For example, if we associated as a 20 MHz STA | |
391 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
392 | * reasons) then switching to a 40 MHz channel now won't do us | |
393 | * any good -- we couldn't use it with the AP. | |
394 | */ | |
395 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
396 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 397 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
398 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
399 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 400 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
401 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
402 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 403 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
404 | |
405 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
406 | return 0; | |
407 | ||
408 | sdata_info(sdata, | |
409 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
410 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
411 | chandef.center_freq1, chandef.center_freq2); | |
412 | ||
413 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
414 | IEEE80211_STA_DISABLE_VHT | | |
415 | IEEE80211_STA_DISABLE_40MHZ | | |
416 | IEEE80211_STA_DISABLE_80P80MHZ | | |
417 | IEEE80211_STA_DISABLE_160MHZ)) || | |
418 | !cfg80211_chandef_valid(&chandef)) { | |
419 | sdata_info(sdata, | |
420 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
421 | ifmgd->bssid); | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | switch (chandef.width) { | |
426 | case NL80211_CHAN_WIDTH_20_NOHT: | |
427 | case NL80211_CHAN_WIDTH_20: | |
428 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
429 | break; | |
4bf88530 | 430 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 431 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 432 | break; |
30eb1dc2 JB |
433 | case NL80211_CHAN_WIDTH_80: |
434 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
435 | break; | |
436 | case NL80211_CHAN_WIDTH_80P80: | |
437 | case NL80211_CHAN_WIDTH_160: | |
438 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 439 | break; |
30eb1dc2 JB |
440 | default: |
441 | return -EINVAL; | |
64f68e5d | 442 | } |
d5522e03 | 443 | |
30eb1dc2 JB |
444 | if (new_sta_bw > sta->cur_max_bandwidth) |
445 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 446 | |
30eb1dc2 JB |
447 | if (new_sta_bw < sta->sta.bandwidth) { |
448 | sta->sta.bandwidth = new_sta_bw; | |
449 | rate_control_rate_update(local, sband, sta, | |
450 | IEEE80211_RC_BW_CHANGED); | |
451 | } | |
64f68e5d | 452 | |
30eb1dc2 JB |
453 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
454 | if (ret) { | |
455 | sdata_info(sdata, | |
456 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
457 | ifmgd->bssid); | |
458 | return ret; | |
459 | } | |
7cc44ed4 | 460 | |
30eb1dc2 JB |
461 | if (new_sta_bw > sta->sta.bandwidth) { |
462 | sta->sta.bandwidth = new_sta_bw; | |
463 | rate_control_rate_update(local, sband, sta, | |
464 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 465 | } |
d5522e03 | 466 | |
30eb1dc2 | 467 | return 0; |
d5522e03 JB |
468 | } |
469 | ||
9c6bd790 JB |
470 | /* frame sending functions */ |
471 | ||
66e67e41 | 472 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 473 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
474 | struct ieee80211_supported_band *sband, |
475 | struct ieee80211_channel *channel, | |
476 | enum ieee80211_smps_mode smps) | |
477 | { | |
66e67e41 JB |
478 | u8 *pos; |
479 | u32 flags = channel->flags; | |
480 | u16 cap; | |
481 | struct ieee80211_sta_ht_cap ht_cap; | |
482 | ||
483 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
484 | ||
66e67e41 JB |
485 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
486 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
487 | ||
66e67e41 JB |
488 | /* determine capability flags */ |
489 | cap = ht_cap.cap; | |
490 | ||
9dde6423 | 491 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
492 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
493 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
494 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
495 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
496 | } | |
497 | break; | |
498 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
499 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
500 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
501 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
502 | } | |
503 | break; | |
504 | } | |
505 | ||
24398e39 JB |
506 | /* |
507 | * If 40 MHz was disabled associate as though we weren't | |
508 | * capable of 40 MHz -- some broken APs will never fall | |
509 | * back to trying to transmit in 20 MHz. | |
510 | */ | |
511 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
512 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
513 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
514 | } | |
515 | ||
66e67e41 JB |
516 | /* set SM PS mode properly */ |
517 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
518 | switch (smps) { | |
519 | case IEEE80211_SMPS_AUTOMATIC: | |
520 | case IEEE80211_SMPS_NUM_MODES: | |
521 | WARN_ON(1); | |
522 | case IEEE80211_SMPS_OFF: | |
523 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
524 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
525 | break; | |
526 | case IEEE80211_SMPS_STATIC: | |
527 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
528 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
529 | break; | |
530 | case IEEE80211_SMPS_DYNAMIC: | |
531 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
532 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
533 | break; | |
534 | } | |
535 | ||
536 | /* reserve and fill IE */ | |
537 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
538 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
539 | } | |
540 | ||
d545daba MP |
541 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
542 | struct sk_buff *skb, | |
b08fbbd8 JB |
543 | struct ieee80211_supported_band *sband, |
544 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
545 | { |
546 | u8 *pos; | |
547 | u32 cap; | |
548 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 549 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
550 | |
551 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
552 | ||
553 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 554 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
555 | |
556 | /* determine capability flags */ | |
557 | cap = vht_cap.cap; | |
558 | ||
f2d9d270 | 559 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
575f0530 JB |
560 | u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
561 | ||
562 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
563 | if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
564 | bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
565 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
f2d9d270 JB |
566 | } |
567 | ||
568 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
569 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
575f0530 | 570 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
f2d9d270 JB |
571 | } |
572 | ||
b08fbbd8 JB |
573 | /* |
574 | * Some APs apparently get confused if our capabilities are better | |
575 | * than theirs, so restrict what we advertise in the assoc request. | |
576 | */ | |
577 | if (!(ap_vht_cap->vht_cap_info & | |
578 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
579 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
580 | ||
c1cf6d4e ES |
581 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
582 | ||
583 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
584 | our_bf_sts = cap & mask; | |
585 | ||
586 | if (ap_bf_sts < our_bf_sts) { | |
587 | cap &= ~mask; | |
588 | cap |= ap_bf_sts; | |
589 | } | |
590 | ||
d545daba | 591 | /* reserve and fill IE */ |
d4950281 | 592 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
593 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
594 | } | |
595 | ||
66e67e41 JB |
596 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
597 | { | |
598 | struct ieee80211_local *local = sdata->local; | |
599 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
600 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
601 | struct sk_buff *skb; | |
602 | struct ieee80211_mgmt *mgmt; | |
603 | u8 *pos, qos_info; | |
604 | size_t offset = 0, noffset; | |
2103dec1 | 605 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
606 | u16 capab; |
607 | struct ieee80211_supported_band *sband; | |
55de908a JB |
608 | struct ieee80211_chanctx_conf *chanctx_conf; |
609 | struct ieee80211_channel *chan; | |
2103dec1 | 610 | u32 rate_flags, rates = 0; |
66e67e41 | 611 | |
8d61ffa5 | 612 | sdata_assert_lock(sdata); |
66e67e41 | 613 | |
55de908a JB |
614 | rcu_read_lock(); |
615 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
616 | if (WARN_ON(!chanctx_conf)) { | |
617 | rcu_read_unlock(); | |
618 | return; | |
619 | } | |
4bf88530 | 620 | chan = chanctx_conf->def.chan; |
2103dec1 | 621 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
622 | rcu_read_unlock(); |
623 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 624 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
625 | |
626 | if (assoc_data->supp_rates_len) { | |
627 | /* | |
628 | * Get all rates supported by the device and the AP as | |
629 | * some APs don't like getting a superset of their rates | |
630 | * in the association request (e.g. D-Link DAP 1353 in | |
631 | * b-only mode)... | |
632 | */ | |
2103dec1 SW |
633 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
634 | assoc_data->supp_rates, | |
635 | assoc_data->supp_rates_len, | |
636 | &rates); | |
66e67e41 JB |
637 | } else { |
638 | /* | |
639 | * In case AP not provide any supported rates information | |
640 | * before association, we send information element(s) with | |
641 | * all rates that we support. | |
642 | */ | |
2103dec1 SW |
643 | rates_len = 0; |
644 | for (i = 0; i < sband->n_bitrates; i++) { | |
645 | if ((rate_flags & sband->bitrates[i].flags) | |
646 | != rate_flags) | |
647 | continue; | |
648 | rates |= BIT(i); | |
649 | rates_len++; | |
650 | } | |
66e67e41 JB |
651 | } |
652 | ||
653 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
654 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
655 | 2 + assoc_data->ssid_len + /* SSID */ | |
656 | 4 + rates_len + /* (extended) rates */ | |
657 | 4 + /* power capability */ | |
658 | 2 + 2 * sband->n_channels + /* supported channels */ | |
659 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 660 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
661 | assoc_data->ie_len + /* extra IEs */ |
662 | 9, /* WMM */ | |
663 | GFP_KERNEL); | |
664 | if (!skb) | |
665 | return; | |
666 | ||
667 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
668 | ||
669 | capab = WLAN_CAPABILITY_ESS; | |
670 | ||
671 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
ea1b2b45 JB |
672 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
673 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
66e67e41 JB |
674 | } |
675 | ||
676 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
677 | capab |= WLAN_CAPABILITY_PRIVACY; | |
678 | ||
679 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
30686bf7 | 680 | ieee80211_hw_check(&local->hw, SPECTRUM_MGMT)) |
66e67e41 JB |
681 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
682 | ||
cd2f5dd7 AK |
683 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
684 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
685 | ||
66e67e41 JB |
686 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
687 | memset(mgmt, 0, 24); | |
688 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
689 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
690 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
691 | ||
692 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
693 | skb_put(skb, 10); | |
694 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
695 | IEEE80211_STYPE_REASSOC_REQ); | |
696 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
697 | mgmt->u.reassoc_req.listen_interval = | |
698 | cpu_to_le16(local->hw.conf.listen_interval); | |
699 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
700 | ETH_ALEN); | |
701 | } else { | |
702 | skb_put(skb, 4); | |
703 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
704 | IEEE80211_STYPE_ASSOC_REQ); | |
705 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
706 | mgmt->u.assoc_req.listen_interval = | |
707 | cpu_to_le16(local->hw.conf.listen_interval); | |
708 | } | |
709 | ||
710 | /* SSID */ | |
711 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
712 | *pos++ = WLAN_EID_SSID; | |
713 | *pos++ = assoc_data->ssid_len; | |
714 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
715 | ||
716 | /* add all rates which were marked to be used above */ | |
717 | supp_rates_len = rates_len; | |
718 | if (supp_rates_len > 8) | |
719 | supp_rates_len = 8; | |
720 | ||
721 | pos = skb_put(skb, supp_rates_len + 2); | |
722 | *pos++ = WLAN_EID_SUPP_RATES; | |
723 | *pos++ = supp_rates_len; | |
724 | ||
725 | count = 0; | |
726 | for (i = 0; i < sband->n_bitrates; i++) { | |
727 | if (BIT(i) & rates) { | |
2103dec1 SW |
728 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
729 | 5 * (1 << shift)); | |
730 | *pos++ = (u8) rate; | |
66e67e41 JB |
731 | if (++count == 8) |
732 | break; | |
733 | } | |
734 | } | |
735 | ||
736 | if (rates_len > count) { | |
737 | pos = skb_put(skb, rates_len - count + 2); | |
738 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
739 | *pos++ = rates_len - count; | |
740 | ||
741 | for (i++; i < sband->n_bitrates; i++) { | |
742 | if (BIT(i) & rates) { | |
2103dec1 SW |
743 | int rate; |
744 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
745 | 5 * (1 << shift)); | |
746 | *pos++ = (u8) rate; | |
66e67e41 JB |
747 | } |
748 | } | |
749 | } | |
750 | ||
cd2f5dd7 AK |
751 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
752 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
753 | pos = skb_put(skb, 4); |
754 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
755 | *pos++ = 2; | |
756 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
757 | /* max tx power */ |
758 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 759 | } |
66e67e41 | 760 | |
cd2f5dd7 | 761 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
66e67e41 JB |
762 | /* TODO: get this in reg domain format */ |
763 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
764 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
765 | *pos++ = 2 * sband->n_channels; | |
766 | for (i = 0; i < sband->n_channels; i++) { | |
767 | *pos++ = ieee80211_frequency_to_channel( | |
768 | sband->channels[i].center_freq); | |
769 | *pos++ = 1; /* one channel in the subband*/ | |
770 | } | |
771 | } | |
772 | ||
773 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 774 | if (assoc_data->ie_len) { |
66e67e41 JB |
775 | static const u8 before_ht[] = { |
776 | WLAN_EID_SSID, | |
777 | WLAN_EID_SUPP_RATES, | |
778 | WLAN_EID_EXT_SUPP_RATES, | |
779 | WLAN_EID_PWR_CAPABILITY, | |
780 | WLAN_EID_SUPPORTED_CHANNELS, | |
781 | WLAN_EID_RSN, | |
782 | WLAN_EID_QOS_CAPA, | |
783 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
784 | WLAN_EID_MOBILITY_DOMAIN, | |
8ed28747 JB |
785 | WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ |
786 | WLAN_EID_RIC_DATA, /* reassoc only */ | |
66e67e41 JB |
787 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
788 | }; | |
8ed28747 JB |
789 | static const u8 after_ric[] = { |
790 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
791 | WLAN_EID_HT_CAPABILITY, | |
792 | WLAN_EID_BSS_COEX_2040, | |
793 | WLAN_EID_EXT_CAPABILITY, | |
794 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
795 | WLAN_EID_TIM_BCAST_REQ, | |
796 | WLAN_EID_INTERWORKING, | |
797 | /* 60GHz doesn't happen right now */ | |
798 | WLAN_EID_VHT_CAPABILITY, | |
799 | WLAN_EID_OPMODE_NOTIF, | |
800 | }; | |
801 | ||
802 | noffset = ieee80211_ie_split_ric(assoc_data->ie, | |
803 | assoc_data->ie_len, | |
804 | before_ht, | |
805 | ARRAY_SIZE(before_ht), | |
806 | after_ric, | |
807 | ARRAY_SIZE(after_ric), | |
808 | offset); | |
66e67e41 JB |
809 | pos = skb_put(skb, noffset - offset); |
810 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
811 | offset = noffset; | |
812 | } | |
813 | ||
f2d9d270 JB |
814 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
815 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
816 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
817 | ||
a8243b72 | 818 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 819 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 820 | sband, chan, sdata->smps_mode); |
66e67e41 | 821 | |
3de3802c JB |
822 | /* if present, add any custom IEs that go before VHT */ |
823 | if (assoc_data->ie_len) { | |
824 | static const u8 before_vht[] = { | |
825 | WLAN_EID_SSID, | |
826 | WLAN_EID_SUPP_RATES, | |
827 | WLAN_EID_EXT_SUPP_RATES, | |
828 | WLAN_EID_PWR_CAPABILITY, | |
829 | WLAN_EID_SUPPORTED_CHANNELS, | |
830 | WLAN_EID_RSN, | |
831 | WLAN_EID_QOS_CAPA, | |
832 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
833 | WLAN_EID_MOBILITY_DOMAIN, | |
834 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
835 | WLAN_EID_HT_CAPABILITY, | |
836 | WLAN_EID_BSS_COEX_2040, | |
837 | WLAN_EID_EXT_CAPABILITY, | |
838 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
839 | WLAN_EID_TIM_BCAST_REQ, | |
840 | WLAN_EID_INTERWORKING, | |
841 | }; | |
8ed28747 JB |
842 | |
843 | /* RIC already taken above, so no need to handle here anymore */ | |
3de3802c JB |
844 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, |
845 | before_vht, ARRAY_SIZE(before_vht), | |
846 | offset); | |
847 | pos = skb_put(skb, noffset - offset); | |
848 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
849 | offset = noffset; | |
850 | } | |
851 | ||
d545daba | 852 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
853 | ieee80211_add_vht_ie(sdata, skb, sband, |
854 | &assoc_data->ap_vht_cap); | |
d545daba | 855 | |
66e67e41 | 856 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 857 | if (assoc_data->ie_len) { |
66e67e41 JB |
858 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
859 | assoc_data->ie_len, | |
860 | offset); | |
861 | pos = skb_put(skb, noffset - offset); | |
862 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
863 | offset = noffset; | |
864 | } | |
865 | ||
76f0303d JB |
866 | if (assoc_data->wmm) { |
867 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
868 | qos_info = ifmgd->uapsd_queues; |
869 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
870 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
871 | } else { | |
872 | qos_info = 0; | |
873 | } | |
874 | ||
40b861a0 | 875 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
876 | } |
877 | ||
878 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 879 | if (assoc_data->ie_len) { |
66e67e41 JB |
880 | noffset = assoc_data->ie_len; |
881 | pos = skb_put(skb, noffset - offset); | |
882 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
883 | } | |
884 | ||
a1845fc7 JB |
885 | drv_mgd_prepare_tx(local, sdata); |
886 | ||
66e67e41 | 887 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
30686bf7 | 888 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
889 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | |
890 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
891 | ieee80211_tx_skb(sdata, skb); |
892 | } | |
893 | ||
572e0012 KV |
894 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
895 | struct ieee80211_sub_if_data *sdata) | |
896 | { | |
572e0012 KV |
897 | struct ieee80211_pspoll *pspoll; |
898 | struct sk_buff *skb; | |
572e0012 | 899 | |
d8cd189e KV |
900 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
901 | if (!skb) | |
572e0012 | 902 | return; |
572e0012 | 903 | |
d8cd189e KV |
904 | pspoll = (struct ieee80211_pspoll *) skb->data; |
905 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 906 | |
62ae67be JB |
907 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
908 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
909 | } |
910 | ||
965bedad JB |
911 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
912 | struct ieee80211_sub_if_data *sdata, | |
913 | int powersave) | |
914 | { | |
915 | struct sk_buff *skb; | |
d8cd189e | 916 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 917 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 918 | |
d8cd189e KV |
919 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
920 | if (!skb) | |
965bedad | 921 | return; |
965bedad | 922 | |
d8cd189e | 923 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 924 | if (powersave) |
d8cd189e | 925 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 926 | |
6c17b77b SF |
927 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
928 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 | 929 | |
30686bf7 | 930 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
ff40b425 PF |
931 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; |
932 | ||
392b9ffb | 933 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
934 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
935 | ||
62ae67be | 936 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
937 | } |
938 | ||
d524215f FF |
939 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
940 | struct ieee80211_sub_if_data *sdata) | |
941 | { | |
942 | struct sk_buff *skb; | |
943 | struct ieee80211_hdr *nullfunc; | |
944 | __le16 fc; | |
945 | ||
946 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
947 | return; | |
948 | ||
949 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 950 | if (!skb) |
d524215f | 951 | return; |
d15b8459 | 952 | |
d524215f FF |
953 | skb_reserve(skb, local->hw.extra_tx_headroom); |
954 | ||
955 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
956 | memset(nullfunc, 0, 30); | |
957 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
958 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
959 | nullfunc->frame_control = fc; | |
960 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
961 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
962 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
963 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
964 | ||
965 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
966 | ieee80211_tx_skb(sdata, skb); | |
967 | } | |
968 | ||
cc32abd4 JB |
969 | /* spectrum management related things */ |
970 | static void ieee80211_chswitch_work(struct work_struct *work) | |
971 | { | |
972 | struct ieee80211_sub_if_data *sdata = | |
973 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 974 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 975 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 976 | int ret; |
cc32abd4 | 977 | |
9607e6b6 | 978 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
979 | return; |
980 | ||
8d61ffa5 | 981 | sdata_lock(sdata); |
4c3ebc56 MK |
982 | mutex_lock(&local->mtx); |
983 | mutex_lock(&local->chanctx_mtx); | |
984 | ||
77fdaa12 JB |
985 | if (!ifmgd->associated) |
986 | goto out; | |
cc32abd4 | 987 | |
4c3ebc56 MK |
988 | if (!sdata->vif.csa_active) |
989 | goto out; | |
990 | ||
991 | /* | |
992 | * using reservation isn't immediate as it may be deferred until later | |
993 | * with multi-vif. once reservation is complete it will re-schedule the | |
994 | * work with no reserved_chanctx so verify chandef to check if it | |
995 | * completed successfully | |
996 | */ | |
997 | ||
998 | if (sdata->reserved_chanctx) { | |
999 | /* | |
1000 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
1001 | * many times while waiting for other interfaces to use their | |
1002 | * reservations | |
1003 | */ | |
1004 | if (sdata->reserved_ready) | |
1005 | goto out; | |
1006 | ||
1007 | ret = ieee80211_vif_use_reserved_context(sdata); | |
1008 | if (ret) { | |
1009 | sdata_info(sdata, | |
1010 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
1011 | ret); | |
1012 | ieee80211_queue_work(&sdata->local->hw, | |
1013 | &ifmgd->csa_connection_drop_work); | |
1014 | goto out; | |
1015 | } | |
1016 | ||
1017 | goto out; | |
1018 | } | |
1019 | ||
1020 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
1021 | &sdata->csa_chandef)) { | |
7578d575 | 1022 | sdata_info(sdata, |
4c3ebc56 | 1023 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
1024 | ieee80211_queue_work(&sdata->local->hw, |
1025 | &ifmgd->csa_connection_drop_work); | |
1026 | goto out; | |
1027 | } | |
675a0b04 | 1028 | |
cc32abd4 | 1029 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 1030 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 1031 | |
0c21e632 LC |
1032 | ifmgd->csa_waiting_bcn = true; |
1033 | ||
1034 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1035 | ieee80211_sta_reset_conn_monitor(sdata); | |
1036 | ||
1037 | out: | |
1038 | mutex_unlock(&local->chanctx_mtx); | |
1039 | mutex_unlock(&local->mtx); | |
1040 | sdata_unlock(sdata); | |
1041 | } | |
1042 | ||
1043 | static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata) | |
1044 | { | |
1045 | struct ieee80211_local *local = sdata->local; | |
1046 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1047 | int ret; | |
1048 | ||
1049 | sdata_assert_lock(sdata); | |
1050 | ||
1051 | WARN_ON(!sdata->vif.csa_active); | |
4c3ebc56 | 1052 | |
a46992b4 LC |
1053 | if (sdata->csa_block_tx) { |
1054 | ieee80211_wake_vif_queues(local, sdata, | |
1055 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1056 | sdata->csa_block_tx = false; | |
1057 | } | |
7578d575 | 1058 | |
0c21e632 LC |
1059 | sdata->vif.csa_active = false; |
1060 | ifmgd->csa_waiting_bcn = false; | |
1061 | ||
f1d65583 LC |
1062 | ret = drv_post_channel_switch(sdata); |
1063 | if (ret) { | |
1064 | sdata_info(sdata, | |
1065 | "driver post channel switch failed, disconnecting\n"); | |
1066 | ieee80211_queue_work(&local->hw, | |
1067 | &ifmgd->csa_connection_drop_work); | |
0c21e632 | 1068 | return; |
f1d65583 | 1069 | } |
688b1ecf LC |
1070 | |
1071 | cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef); | |
cc32abd4 JB |
1072 | } |
1073 | ||
5ce6e438 JB |
1074 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1075 | { | |
55de908a JB |
1076 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1077 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1078 | |
1079 | trace_api_chswitch_done(sdata, success); | |
1080 | if (!success) { | |
882a7c69 JB |
1081 | sdata_info(sdata, |
1082 | "driver channel switch failed, disconnecting\n"); | |
1083 | ieee80211_queue_work(&sdata->local->hw, | |
1084 | &ifmgd->csa_connection_drop_work); | |
1085 | } else { | |
1086 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1087 | } |
5ce6e438 JB |
1088 | } |
1089 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1090 | ||
cc32abd4 JB |
1091 | static void ieee80211_chswitch_timer(unsigned long data) |
1092 | { | |
1093 | struct ieee80211_sub_if_data *sdata = | |
1094 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1095 | |
9b7d72c1 | 1096 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1097 | } |
1098 | ||
c5a71688 AN |
1099 | static void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata) |
1100 | { | |
1101 | struct sta_info *sta; | |
1102 | u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED; | |
1103 | ||
1104 | rcu_read_lock(); | |
1105 | list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { | |
1106 | if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || | |
1107 | !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) | |
1108 | continue; | |
1109 | ||
1110 | ieee80211_tdls_oper_request(&sdata->vif, sta->sta.addr, | |
1111 | NL80211_TDLS_TEARDOWN, reason, | |
1112 | GFP_ATOMIC); | |
1113 | } | |
1114 | rcu_read_unlock(); | |
1115 | } | |
1116 | ||
37799e52 | 1117 | static void |
4a3cb702 | 1118 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
2ba45384 LC |
1119 | u64 timestamp, u32 device_timestamp, |
1120 | struct ieee802_11_elems *elems, | |
04a161f4 | 1121 | bool beacon) |
cc32abd4 | 1122 | { |
b4f286a1 | 1123 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1124 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1125 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1126 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1127 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1128 | enum ieee80211_band current_band; |
c0f17eb9 | 1129 | struct ieee80211_csa_ie csa_ie; |
6d027bcc | 1130 | struct ieee80211_channel_switch ch_switch; |
e6b7cde4 | 1131 | int res; |
cc32abd4 | 1132 | |
8d61ffa5 | 1133 | sdata_assert_lock(sdata); |
77fdaa12 | 1134 | |
37799e52 | 1135 | if (!cbss) |
cc32abd4 JB |
1136 | return; |
1137 | ||
b4f286a1 | 1138 | if (local->scanning) |
cc32abd4 JB |
1139 | return; |
1140 | ||
37799e52 | 1141 | /* disregard subsequent announcements if we are already processing */ |
3e2a0226 | 1142 | if (sdata->vif.csa_active) |
cc32abd4 JB |
1143 | return; |
1144 | ||
e6b7cde4 | 1145 | current_band = cbss->channel->band; |
c0f17eb9 | 1146 | memset(&csa_ie, 0, sizeof(csa_ie)); |
84469a45 | 1147 | res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, |
e6b7cde4 | 1148 | ifmgd->flags, |
c0f17eb9 | 1149 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1150 | if (res < 0) |
b4f286a1 | 1151 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1152 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1153 | if (res) |
cc32abd4 | 1154 | return; |
cd64f2a9 | 1155 | |
c0f17eb9 | 1156 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1157 | IEEE80211_CHAN_DISABLED)) { |
1158 | sdata_info(sdata, | |
1159 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1160 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1161 | csa_ie.chandef.chan->center_freq, |
1162 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1163 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1164 | ieee80211_queue_work(&local->hw, |
1165 | &ifmgd->csa_connection_drop_work); | |
1166 | return; | |
1167 | } | |
1168 | ||
f84eaa10 JB |
1169 | if (cfg80211_chandef_identical(&csa_ie.chandef, |
1170 | &sdata->vif.bss_conf.chandef)) { | |
1171 | if (ifmgd->csa_ignored_same_chan) | |
1172 | return; | |
1173 | sdata_info(sdata, | |
1174 | "AP %pM tries to chanswitch to same channel, ignore\n", | |
1175 | ifmgd->associated->bssid); | |
1176 | ifmgd->csa_ignored_same_chan = true; | |
1177 | return; | |
1178 | } | |
1179 | ||
c5a71688 AN |
1180 | /* |
1181 | * Drop all TDLS peers - either we disconnect or move to a different | |
1182 | * channel from this point on. There's no telling what our peer will do. | |
1183 | * The TDLS WIDER_BW scenario is also problematic, as peers might now | |
1184 | * have an incompatible wider chandef. | |
1185 | */ | |
1186 | ieee80211_teardown_tdls_peers(sdata); | |
1187 | ||
4c3ebc56 | 1188 | mutex_lock(&local->mtx); |
7578d575 | 1189 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1190 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1191 | lockdep_is_held(&local->chanctx_mtx)); | |
1192 | if (!conf) { | |
1193 | sdata_info(sdata, | |
1194 | "no channel context assigned to vif?, disconnecting\n"); | |
f3b0bbb3 | 1195 | goto drop_connection; |
4c3ebc56 MK |
1196 | } |
1197 | ||
1198 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1199 | ||
0f791eb4 | 1200 | if (local->use_chanctx && |
30686bf7 | 1201 | !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) { |
0f791eb4 LC |
1202 | sdata_info(sdata, |
1203 | "driver doesn't support chan-switch with channel contexts\n"); | |
f3b0bbb3 | 1204 | goto drop_connection; |
55de908a JB |
1205 | } |
1206 | ||
6d027bcc LC |
1207 | ch_switch.timestamp = timestamp; |
1208 | ch_switch.device_timestamp = device_timestamp; | |
1209 | ch_switch.block_tx = csa_ie.mode; | |
1210 | ch_switch.chandef = csa_ie.chandef; | |
1211 | ch_switch.count = csa_ie.count; | |
1212 | ||
1213 | if (drv_pre_channel_switch(sdata, &ch_switch)) { | |
1214 | sdata_info(sdata, | |
1215 | "preparing for channel switch failed, disconnecting\n"); | |
f3b0bbb3 | 1216 | goto drop_connection; |
6d027bcc LC |
1217 | } |
1218 | ||
4c3ebc56 MK |
1219 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1220 | chanctx->mode, false); | |
1221 | if (res) { | |
55de908a | 1222 | sdata_info(sdata, |
4c3ebc56 MK |
1223 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1224 | res); | |
f3b0bbb3 | 1225 | goto drop_connection; |
55de908a | 1226 | } |
b4f286a1 | 1227 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1228 | |
c46a73f3 | 1229 | sdata->vif.csa_active = true; |
4c3ebc56 | 1230 | sdata->csa_chandef = csa_ie.chandef; |
59af6928 | 1231 | sdata->csa_block_tx = csa_ie.mode; |
f84eaa10 | 1232 | ifmgd->csa_ignored_same_chan = false; |
55de908a | 1233 | |
59af6928 | 1234 | if (sdata->csa_block_tx) |
a46992b4 LC |
1235 | ieee80211_stop_vif_queues(local, sdata, |
1236 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1237 | mutex_unlock(&local->mtx); |
57eebdf3 | 1238 | |
2f457293 LC |
1239 | cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, |
1240 | csa_ie.count); | |
1241 | ||
b4f286a1 | 1242 | if (local->ops->channel_switch) { |
5ce6e438 | 1243 | /* use driver's channel switch callback */ |
0f791eb4 | 1244 | drv_channel_switch(local, sdata, &ch_switch); |
5ce6e438 JB |
1245 | return; |
1246 | } | |
1247 | ||
1248 | /* channel switch handled in software */ | |
c0f17eb9 | 1249 | if (csa_ie.count <= 1) |
b4f286a1 | 1250 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1251 | else |
cc32abd4 | 1252 | mod_timer(&ifmgd->chswitch_timer, |
ff1e417c LC |
1253 | TU_TO_EXP_TIME((csa_ie.count - 1) * |
1254 | cbss->beacon_interval)); | |
f3b0bbb3 JB |
1255 | return; |
1256 | drop_connection: | |
1257 | ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); | |
1258 | mutex_unlock(&local->chanctx_mtx); | |
1259 | mutex_unlock(&local->mtx); | |
cc32abd4 JB |
1260 | } |
1261 | ||
24a4e400 SG |
1262 | static bool |
1263 | ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
1264 | struct ieee80211_channel *channel, | |
1265 | const u8 *country_ie, u8 country_ie_len, | |
1266 | const u8 *pwr_constr_elem, | |
1267 | int *chan_pwr, int *pwr_reduction) | |
cc32abd4 | 1268 | { |
04b7b2ff JB |
1269 | struct ieee80211_country_ie_triplet *triplet; |
1270 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
24a4e400 | 1271 | int i, chan_increment; |
04b7b2ff | 1272 | bool have_chan_pwr = false; |
cc32abd4 | 1273 | |
04b7b2ff JB |
1274 | /* Invalid IE */ |
1275 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
24a4e400 | 1276 | return false; |
cc32abd4 | 1277 | |
04b7b2ff JB |
1278 | triplet = (void *)(country_ie + 3); |
1279 | country_ie_len -= 3; | |
1280 | ||
1281 | switch (channel->band) { | |
1282 | default: | |
1283 | WARN_ON_ONCE(1); | |
1284 | /* fall through */ | |
1285 | case IEEE80211_BAND_2GHZ: | |
1286 | case IEEE80211_BAND_60GHZ: | |
1287 | chan_increment = 1; | |
1288 | break; | |
1289 | case IEEE80211_BAND_5GHZ: | |
1290 | chan_increment = 4; | |
1291 | break; | |
cc32abd4 | 1292 | } |
04b7b2ff JB |
1293 | |
1294 | /* find channel */ | |
1295 | while (country_ie_len >= 3) { | |
1296 | u8 first_channel = triplet->chans.first_channel; | |
1297 | ||
1298 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1299 | goto next; | |
1300 | ||
1301 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1302 | if (first_channel + i * chan_increment == chan) { | |
1303 | have_chan_pwr = true; | |
24a4e400 | 1304 | *chan_pwr = triplet->chans.max_power; |
04b7b2ff JB |
1305 | break; |
1306 | } | |
1307 | } | |
1308 | if (have_chan_pwr) | |
1309 | break; | |
1310 | ||
1311 | next: | |
1312 | triplet++; | |
1313 | country_ie_len -= 3; | |
1314 | } | |
1315 | ||
a5fee9cb | 1316 | if (have_chan_pwr && pwr_constr_elem) |
24a4e400 | 1317 | *pwr_reduction = *pwr_constr_elem; |
a5fee9cb MB |
1318 | else |
1319 | *pwr_reduction = 0; | |
1320 | ||
24a4e400 SG |
1321 | return have_chan_pwr; |
1322 | } | |
1323 | ||
c8d65917 SG |
1324 | static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata, |
1325 | struct ieee80211_channel *channel, | |
1326 | const u8 *cisco_dtpc_ie, | |
1327 | int *pwr_level) | |
1328 | { | |
1329 | /* From practical testing, the first data byte of the DTPC element | |
1330 | * seems to contain the requested dBm level, and the CLI on Cisco | |
1331 | * APs clearly state the range is -127 to 127 dBm, which indicates | |
1332 | * a signed byte, although it seemingly never actually goes negative. | |
1333 | * The other byte seems to always be zero. | |
1334 | */ | |
1335 | *pwr_level = (__s8)cisco_dtpc_ie[4]; | |
1336 | } | |
1337 | ||
24a4e400 SG |
1338 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1339 | struct ieee80211_channel *channel, | |
1340 | struct ieee80211_mgmt *mgmt, | |
1341 | const u8 *country_ie, u8 country_ie_len, | |
c8d65917 SG |
1342 | const u8 *pwr_constr_ie, |
1343 | const u8 *cisco_dtpc_ie) | |
24a4e400 | 1344 | { |
c8d65917 SG |
1345 | bool has_80211h_pwr = false, has_cisco_pwr = false; |
1346 | int chan_pwr = 0, pwr_reduction_80211h = 0; | |
1347 | int pwr_level_cisco, pwr_level_80211h; | |
24a4e400 | 1348 | int new_ap_level; |
a5fee9cb | 1349 | __le16 capab = mgmt->u.probe_resp.capab_info; |
04b7b2ff | 1350 | |
a5fee9cb MB |
1351 | if (country_ie && |
1352 | (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || | |
1353 | capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { | |
24a4e400 SG |
1354 | has_80211h_pwr = ieee80211_find_80211h_pwr_constr( |
1355 | sdata, channel, country_ie, country_ie_len, | |
1356 | pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); | |
c8d65917 SG |
1357 | pwr_level_80211h = |
1358 | max_t(int, 0, chan_pwr - pwr_reduction_80211h); | |
1359 | } | |
1360 | ||
1361 | if (cisco_dtpc_ie) { | |
1362 | ieee80211_find_cisco_dtpc( | |
1363 | sdata, channel, cisco_dtpc_ie, &pwr_level_cisco); | |
1364 | has_cisco_pwr = true; | |
24a4e400 | 1365 | } |
04b7b2ff | 1366 | |
c8d65917 | 1367 | if (!has_80211h_pwr && !has_cisco_pwr) |
1ea6f9c0 | 1368 | return 0; |
04b7b2ff | 1369 | |
c8d65917 SG |
1370 | /* If we have both 802.11h and Cisco DTPC, apply both limits |
1371 | * by picking the smallest of the two power levels advertised. | |
1372 | */ | |
1373 | if (has_80211h_pwr && | |
1374 | (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { | |
cef2fc1c JL |
1375 | sdata_dbg(sdata, |
1376 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1377 | pwr_level_80211h, chan_pwr, pwr_reduction_80211h, | |
1378 | sdata->u.mgd.bssid); | |
c8d65917 SG |
1379 | new_ap_level = pwr_level_80211h; |
1380 | } else { /* has_cisco_pwr is always true here. */ | |
cef2fc1c JL |
1381 | sdata_dbg(sdata, |
1382 | "Limiting TX power to %d dBm as advertised by %pM\n", | |
1383 | pwr_level_cisco, sdata->u.mgd.bssid); | |
c8d65917 SG |
1384 | new_ap_level = pwr_level_cisco; |
1385 | } | |
04b7b2ff | 1386 | |
1ea6f9c0 JB |
1387 | if (sdata->ap_power_level == new_ap_level) |
1388 | return 0; | |
04b7b2ff | 1389 | |
1ea6f9c0 JB |
1390 | sdata->ap_power_level = new_ap_level; |
1391 | if (__ieee80211_recalc_txpower(sdata)) | |
1392 | return BSS_CHANGED_TXPOWER; | |
1393 | return 0; | |
cc32abd4 JB |
1394 | } |
1395 | ||
965bedad JB |
1396 | /* powersave */ |
1397 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1398 | struct ieee80211_sub_if_data *sdata) | |
1399 | { | |
1400 | struct ieee80211_conf *conf = &local->hw.conf; | |
1401 | ||
d5edaedc JB |
1402 | /* |
1403 | * If we are scanning right now then the parameters will | |
1404 | * take effect when scan finishes. | |
1405 | */ | |
fbe9c429 | 1406 | if (local->scanning) |
d5edaedc JB |
1407 | return; |
1408 | ||
965bedad | 1409 | if (conf->dynamic_ps_timeout > 0 && |
30686bf7 | 1410 | !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { |
965bedad JB |
1411 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1412 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1413 | } else { | |
30686bf7 | 1414 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) |
965bedad | 1415 | ieee80211_send_nullfunc(local, sdata, 1); |
375177bf | 1416 | |
30686bf7 JB |
1417 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
1418 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) | |
2a13052f JO |
1419 | return; |
1420 | ||
1421 | conf->flags |= IEEE80211_CONF_PS; | |
1422 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1423 | } |
1424 | } | |
1425 | ||
1426 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1427 | { | |
1428 | struct ieee80211_conf *conf = &local->hw.conf; | |
1429 | ||
1430 | if (local->ps_sdata) { | |
965bedad JB |
1431 | ieee80211_enable_ps(local, local->ps_sdata); |
1432 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1433 | conf->flags &= ~IEEE80211_CONF_PS; | |
1434 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1435 | del_timer_sync(&local->dynamic_ps_timer); | |
1436 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1437 | } | |
1438 | } | |
1439 | ||
808118cb JY |
1440 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1441 | { | |
1442 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1443 | struct sta_info *sta = NULL; | |
c2c98fde | 1444 | bool authorized = false; |
808118cb JY |
1445 | |
1446 | if (!mgd->powersave) | |
1447 | return false; | |
1448 | ||
05cb9108 JB |
1449 | if (mgd->broken_ap) |
1450 | return false; | |
1451 | ||
808118cb JY |
1452 | if (!mgd->associated) |
1453 | return false; | |
1454 | ||
392b9ffb | 1455 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1456 | return false; |
1457 | ||
989c6505 | 1458 | if (!mgd->have_beacon) |
ce857888 AB |
1459 | return false; |
1460 | ||
808118cb JY |
1461 | rcu_read_lock(); |
1462 | sta = sta_info_get(sdata, mgd->bssid); | |
1463 | if (sta) | |
c2c98fde | 1464 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1465 | rcu_read_unlock(); |
1466 | ||
c2c98fde | 1467 | return authorized; |
808118cb JY |
1468 | } |
1469 | ||
965bedad | 1470 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1471 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1472 | { |
1473 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1474 | int count = 0; | |
195e294d | 1475 | int timeout; |
965bedad | 1476 | |
30686bf7 | 1477 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) { |
965bedad JB |
1478 | local->ps_sdata = NULL; |
1479 | return; | |
1480 | } | |
1481 | ||
1482 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1483 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1484 | continue; |
8c7914de RM |
1485 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1486 | /* If an AP vif is found, then disable PS | |
1487 | * by setting the count to zero thereby setting | |
1488 | * ps_sdata to NULL. | |
1489 | */ | |
1490 | count = 0; | |
1491 | break; | |
1492 | } | |
965bedad JB |
1493 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1494 | continue; | |
1495 | found = sdata; | |
1496 | count++; | |
1497 | } | |
1498 | ||
808118cb | 1499 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1500 | s32 beaconint_us; |
1501 | ||
1502 | if (latency < 0) | |
ed77134b | 1503 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1504 | |
1505 | beaconint_us = ieee80211_tu_to_usec( | |
1506 | found->vif.bss_conf.beacon_int); | |
1507 | ||
ff616381 | 1508 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1509 | if (timeout < 0) { |
1510 | /* | |
ff616381 JO |
1511 | * Go to full PSM if the user configures a very low |
1512 | * latency requirement. | |
0ab82b04 EP |
1513 | * The 2000 second value is there for compatibility |
1514 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1515 | * with real values. | |
195e294d | 1516 | */ |
0ab82b04 EP |
1517 | if (latency > (1900 * USEC_PER_MSEC) && |
1518 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1519 | timeout = 0; |
ff616381 JO |
1520 | else |
1521 | timeout = 100; | |
195e294d | 1522 | } |
09b85568 | 1523 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1524 | |
04fe2037 | 1525 | if (beaconint_us > latency) { |
10f644a4 | 1526 | local->ps_sdata = NULL; |
04fe2037 | 1527 | } else { |
04fe2037 | 1528 | int maxslp = 1; |
826262c3 | 1529 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1530 | |
1531 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1532 | if (!dtimper) | |
1533 | dtimper = 1; | |
1534 | else if (dtimper > 1) | |
04fe2037 JB |
1535 | maxslp = min_t(int, dtimper, |
1536 | latency / beaconint_us); | |
1537 | ||
9ccebe61 | 1538 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1539 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1540 | local->ps_sdata = found; |
04fe2037 | 1541 | } |
10f644a4 | 1542 | } else { |
965bedad | 1543 | local->ps_sdata = NULL; |
10f644a4 | 1544 | } |
965bedad JB |
1545 | |
1546 | ieee80211_change_ps(local); | |
1547 | } | |
1548 | ||
ab095877 EP |
1549 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1550 | { | |
1551 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1552 | ||
1553 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1554 | sdata->vif.bss_conf.ps = ps_allowed; | |
1555 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1556 | } | |
1557 | } | |
1558 | ||
965bedad JB |
1559 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1560 | { | |
1561 | struct ieee80211_local *local = | |
1562 | container_of(work, struct ieee80211_local, | |
1563 | dynamic_ps_disable_work); | |
1564 | ||
1565 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1566 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1567 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1568 | } | |
1569 | ||
1570 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1571 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1572 | IEEE80211_QUEUE_STOP_REASON_PS, |
1573 | false); | |
965bedad JB |
1574 | } |
1575 | ||
1576 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1577 | { | |
1578 | struct ieee80211_local *local = | |
1579 | container_of(work, struct ieee80211_local, | |
1580 | dynamic_ps_enable_work); | |
1581 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1582 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1583 | unsigned long flags; |
1584 | int q; | |
965bedad JB |
1585 | |
1586 | /* can only happen when PS was just disabled anyway */ | |
1587 | if (!sdata) | |
1588 | return; | |
1589 | ||
5e34069c CL |
1590 | ifmgd = &sdata->u.mgd; |
1591 | ||
965bedad JB |
1592 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1593 | return; | |
1594 | ||
09b85568 | 1595 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1596 | /* don't enter PS if TX frames are pending */ |
1597 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1598 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1599 | msecs_to_jiffies( | |
1600 | local->hw.conf.dynamic_ps_timeout)); | |
1601 | return; | |
1602 | } | |
77b7023a AN |
1603 | |
1604 | /* | |
1605 | * transmission can be stopped by others which leads to | |
1606 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1607 | * is not the actual idle state. | |
1608 | */ | |
1609 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1610 | for (q = 0; q < local->hw.queues; q++) { | |
1611 | if (local->queue_stop_reasons[q]) { | |
1612 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1613 | flags); | |
1614 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1615 | msecs_to_jiffies( | |
1616 | local->hw.conf.dynamic_ps_timeout)); | |
1617 | return; | |
1618 | } | |
1619 | } | |
1620 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1621 | } |
1ddc2867 | 1622 | |
30686bf7 | 1623 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
9c38a8b4 | 1624 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1625 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1626 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1627 | msecs_to_jiffies( | |
1628 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1629 | } else { |
e8306f98 VN |
1630 | ieee80211_send_nullfunc(local, sdata, 1); |
1631 | /* Flush to get the tx status of nullfunc frame */ | |
3b24f4c6 | 1632 | ieee80211_flush_queues(local, sdata, false); |
e8306f98 | 1633 | } |
f3e85b9e VN |
1634 | } |
1635 | ||
30686bf7 JB |
1636 | if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
1637 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) || | |
375177bf VN |
1638 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1639 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1640 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1641 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1642 | } | |
965bedad JB |
1643 | } |
1644 | ||
1645 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1646 | { | |
1647 | struct ieee80211_local *local = (void *) data; | |
1648 | ||
42935eca | 1649 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1650 | } |
1651 | ||
164eb02d SW |
1652 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1653 | { | |
1654 | struct delayed_work *delayed_work = | |
1655 | container_of(work, struct delayed_work, work); | |
1656 | struct ieee80211_sub_if_data *sdata = | |
1657 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1658 | dfs_cac_timer_work); | |
d2859df5 | 1659 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1660 | |
34a3740d JB |
1661 | mutex_lock(&sdata->local->mtx); |
1662 | if (sdata->wdev.cac_started) { | |
1663 | ieee80211_vif_release_channel(sdata); | |
1664 | cfg80211_cac_event(sdata->dev, &chandef, | |
1665 | NL80211_RADAR_CAC_FINISHED, | |
1666 | GFP_KERNEL); | |
1667 | } | |
1668 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1669 | } |
1670 | ||
02219b3a JB |
1671 | static bool |
1672 | __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1673 | { | |
1674 | struct ieee80211_local *local = sdata->local; | |
1675 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
cc72f6e2 | 1676 | bool ret = false; |
02219b3a JB |
1677 | int ac; |
1678 | ||
1679 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
1680 | return false; | |
1681 | ||
1682 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1683 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
1684 | int non_acm_ac; | |
1685 | unsigned long now = jiffies; | |
1686 | ||
1687 | if (tx_tspec->action == TX_TSPEC_ACTION_NONE && | |
1688 | tx_tspec->admitted_time && | |
1689 | time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1690 | tx_tspec->consumed_tx_time = 0; | |
1691 | tx_tspec->time_slice_start = now; | |
1692 | ||
1693 | if (tx_tspec->downgraded) | |
1694 | tx_tspec->action = | |
1695 | TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
1696 | } | |
1697 | ||
1698 | switch (tx_tspec->action) { | |
1699 | case TX_TSPEC_ACTION_STOP_DOWNGRADE: | |
1700 | /* take the original parameters */ | |
1701 | if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac])) | |
1702 | sdata_err(sdata, | |
1703 | "failed to set TX queue parameters for queue %d\n", | |
1704 | ac); | |
1705 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1706 | tx_tspec->downgraded = false; | |
1707 | ret = true; | |
1708 | break; | |
1709 | case TX_TSPEC_ACTION_DOWNGRADE: | |
1710 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1711 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1712 | ret = true; | |
1713 | break; | |
1714 | } | |
1715 | /* downgrade next lower non-ACM AC */ | |
1716 | for (non_acm_ac = ac + 1; | |
1717 | non_acm_ac < IEEE80211_NUM_ACS; | |
1718 | non_acm_ac++) | |
1719 | if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) | |
1720 | break; | |
1721 | /* The loop will result in using BK even if it requires | |
1722 | * admission control, such configuration makes no sense | |
1723 | * and we have to transmit somehow - the AC selection | |
1724 | * does the same thing. | |
1725 | */ | |
1726 | if (drv_conf_tx(local, sdata, ac, | |
1727 | &sdata->tx_conf[non_acm_ac])) | |
1728 | sdata_err(sdata, | |
1729 | "failed to set TX queue parameters for queue %d\n", | |
1730 | ac); | |
1731 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1732 | ret = true; | |
1733 | schedule_delayed_work(&ifmgd->tx_tspec_wk, | |
1734 | tx_tspec->time_slice_start + HZ - now + 1); | |
1735 | break; | |
1736 | case TX_TSPEC_ACTION_NONE: | |
1737 | /* nothing now */ | |
1738 | break; | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | return ret; | |
1743 | } | |
1744 | ||
1745 | void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1746 | { | |
1747 | if (__ieee80211_sta_handle_tspec_ac_params(sdata)) | |
1748 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); | |
1749 | } | |
1750 | ||
1751 | static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work) | |
1752 | { | |
1753 | struct ieee80211_sub_if_data *sdata; | |
1754 | ||
1755 | sdata = container_of(work, struct ieee80211_sub_if_data, | |
1756 | u.mgd.tx_tspec_wk.work); | |
1757 | ieee80211_sta_handle_tspec_ac_params(sdata); | |
1758 | } | |
1759 | ||
60f8b39c | 1760 | /* MLME */ |
7d25745d | 1761 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1762 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1763 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1764 | { |
f0706e82 | 1765 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1766 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1767 | size_t left; |
1768 | int count; | |
4a3cb702 JB |
1769 | const u8 *pos; |
1770 | u8 uapsd_queues = 0; | |
f0706e82 | 1771 | |
e1b3ec1a | 1772 | if (!local->ops->conf_tx) |
7d25745d | 1773 | return false; |
e1b3ec1a | 1774 | |
32c5057b | 1775 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1776 | return false; |
3434fbd3 JB |
1777 | |
1778 | if (!wmm_param) | |
7d25745d | 1779 | return false; |
3434fbd3 | 1780 | |
f0706e82 | 1781 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1782 | return false; |
ab13315a KV |
1783 | |
1784 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1785 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1786 | |
f0706e82 | 1787 | count = wmm_param[6] & 0x0f; |
46900298 | 1788 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1789 | return false; |
46900298 | 1790 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1791 | |
1792 | pos = wmm_param + 8; | |
1793 | left = wmm_param_len - 8; | |
1794 | ||
1795 | memset(¶ms, 0, sizeof(params)); | |
1796 | ||
00e96dec | 1797 | sdata->wmm_acm = 0; |
f0706e82 JB |
1798 | for (; left >= 4; left -= 4, pos += 4) { |
1799 | int aci = (pos[0] >> 5) & 0x03; | |
1800 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1801 | bool uapsd = false; |
f0706e82 JB |
1802 | int queue; |
1803 | ||
1804 | switch (aci) { | |
0eeb59fe | 1805 | case 1: /* AC_BK */ |
e100bb64 | 1806 | queue = 3; |
988c0f72 | 1807 | if (acm) |
00e96dec | 1808 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1809 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1810 | uapsd = true; | |
f0706e82 | 1811 | break; |
0eeb59fe | 1812 | case 2: /* AC_VI */ |
e100bb64 | 1813 | queue = 1; |
988c0f72 | 1814 | if (acm) |
00e96dec | 1815 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1816 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1817 | uapsd = true; | |
f0706e82 | 1818 | break; |
0eeb59fe | 1819 | case 3: /* AC_VO */ |
e100bb64 | 1820 | queue = 0; |
988c0f72 | 1821 | if (acm) |
00e96dec | 1822 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1823 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1824 | uapsd = true; | |
f0706e82 | 1825 | break; |
0eeb59fe | 1826 | case 0: /* AC_BE */ |
f0706e82 | 1827 | default: |
e100bb64 | 1828 | queue = 2; |
988c0f72 | 1829 | if (acm) |
00e96dec | 1830 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1831 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1832 | uapsd = true; | |
f0706e82 JB |
1833 | break; |
1834 | } | |
1835 | ||
1836 | params.aifs = pos[0] & 0x0f; | |
1837 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1838 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1839 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1840 | params.acm = acm; |
ab13315a KV |
1841 | params.uapsd = uapsd; |
1842 | ||
bdcbd8e0 | 1843 | mlme_dbg(sdata, |
02219b3a | 1844 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", |
bdcbd8e0 JB |
1845 | queue, aci, acm, |
1846 | params.aifs, params.cw_min, params.cw_max, | |
02219b3a JB |
1847 | params.txop, params.uapsd, |
1848 | ifmgd->tx_tspec[queue].downgraded); | |
f6f3def3 | 1849 | sdata->tx_conf[queue] = params; |
02219b3a JB |
1850 | if (!ifmgd->tx_tspec[queue].downgraded && |
1851 | drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1852 | sdata_err(sdata, |
1853 | "failed to set TX queue parameters for queue %d\n", | |
1854 | queue); | |
f0706e82 | 1855 | } |
e1b3ec1a SG |
1856 | |
1857 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1858 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1859 | return true; |
f0706e82 JB |
1860 | } |
1861 | ||
925e64c3 SG |
1862 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1863 | { | |
1864 | lockdep_assert_held(&sdata->local->mtx); | |
1865 | ||
392b9ffb | 1866 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1867 | ieee80211_run_deferred_scan(sdata->local); |
1868 | } | |
1869 | ||
1870 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1871 | { | |
1872 | mutex_lock(&sdata->local->mtx); | |
1873 | __ieee80211_stop_poll(sdata); | |
1874 | mutex_unlock(&sdata->local->mtx); | |
1875 | } | |
1876 | ||
7a5158ef JB |
1877 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1878 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1879 | { |
bda3933a | 1880 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1881 | u32 changed = 0; |
7a5158ef JB |
1882 | bool use_protection; |
1883 | bool use_short_preamble; | |
1884 | bool use_short_slot; | |
1885 | ||
1886 | if (erp_valid) { | |
1887 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1888 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1889 | } else { | |
1890 | use_protection = false; | |
1891 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1892 | } | |
1893 | ||
1894 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1895 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1896 | use_short_slot = true; |
5628221c | 1897 | |
471b3efd | 1898 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1899 | bss_conf->use_cts_prot = use_protection; |
1900 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1901 | } |
7e9ed188 | 1902 | |
d43c7b37 | 1903 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1904 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1905 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1906 | } |
d9430a32 | 1907 | |
7a5158ef | 1908 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1909 | bss_conf->use_short_slot = use_short_slot; |
1910 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1911 | } |
1912 | ||
1913 | return changed; | |
1914 | } | |
1915 | ||
f698d856 | 1916 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1917 | struct cfg80211_bss *cbss, |
ae5eb026 | 1918 | u32 bss_info_changed) |
f0706e82 | 1919 | { |
0c1ad2ca | 1920 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1921 | struct ieee80211_local *local = sdata->local; |
68542962 | 1922 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1923 | |
ae5eb026 | 1924 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1925 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1926 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1927 | |
7ccc8bd7 | 1928 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1929 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1930 | |
0c1ad2ca JB |
1931 | sdata->u.mgd.associated = cbss; |
1932 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1933 | |
17e4ec14 JM |
1934 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1935 | ||
488dd7b5 | 1936 | if (sdata->vif.p2p) { |
9caf0364 | 1937 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1938 | |
9caf0364 JB |
1939 | rcu_read_lock(); |
1940 | ies = rcu_dereference(cbss->ies); | |
1941 | if (ies) { | |
9caf0364 JB |
1942 | int ret; |
1943 | ||
1944 | ret = cfg80211_get_p2p_attr( | |
1945 | ies->data, ies->len, | |
1946 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1947 | (u8 *) &bss_conf->p2p_noa_attr, |
1948 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1949 | if (ret >= 2) { |
67baf663 JD |
1950 | sdata->u.mgd.p2p_noa_index = |
1951 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1952 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1953 | } |
488dd7b5 | 1954 | } |
9caf0364 | 1955 | rcu_read_unlock(); |
488dd7b5 JB |
1956 | } |
1957 | ||
b291ba11 | 1958 | /* just to be sure */ |
925e64c3 | 1959 | ieee80211_stop_poll(sdata); |
b291ba11 | 1960 | |
9ac19a90 | 1961 | ieee80211_led_assoc(local, 1); |
9306102e | 1962 | |
989c6505 | 1963 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1964 | /* |
1965 | * If the AP is buggy we may get here with no DTIM period | |
1966 | * known, so assume it's 1 which is the only safe assumption | |
1967 | * in that case, although if the TIM IE is broken powersave | |
1968 | * probably just won't work at all. | |
1969 | */ | |
1970 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1971 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1972 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1973 | } else { |
817cee76 | 1974 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1975 | bss_conf->dtim_period = 0; |
826262c3 | 1976 | } |
e5b900d2 | 1977 | |
68542962 | 1978 | bss_conf->assoc = 1; |
9cef8737 | 1979 | |
a97c13c3 | 1980 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1981 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1982 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1983 | bss_info_changed |= BSS_CHANGED_CQM; |
1984 | ||
68542962 | 1985 | /* Enable ARP filtering */ |
0f19b41e | 1986 | if (bss_conf->arp_addr_cnt) |
68542962 | 1987 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1988 | |
ae5eb026 | 1989 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1990 | |
056508dc JB |
1991 | mutex_lock(&local->iflist_mtx); |
1992 | ieee80211_recalc_ps(local, -1); | |
1993 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1994 | |
04ecd257 | 1995 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1996 | ieee80211_recalc_ps_vif(sdata); |
1997 | ||
9ac19a90 | 1998 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1999 | } |
2000 | ||
e69e95db | 2001 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
2002 | u16 stype, u16 reason, bool tx, |
2003 | u8 *frame_buf) | |
aa458d17 | 2004 | { |
46900298 | 2005 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 2006 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 2007 | u32 changed = 0; |
aa458d17 | 2008 | |
8d61ffa5 | 2009 | sdata_assert_lock(sdata); |
77fdaa12 | 2010 | |
37ad3888 JB |
2011 | if (WARN_ON_ONCE(tx && !frame_buf)) |
2012 | return; | |
2013 | ||
b291ba11 JB |
2014 | if (WARN_ON(!ifmgd->associated)) |
2015 | return; | |
2016 | ||
79543d8e DS |
2017 | ieee80211_stop_poll(sdata); |
2018 | ||
77fdaa12 | 2019 | ifmgd->associated = NULL; |
aa458d17 TW |
2020 | netif_carrier_off(sdata->dev); |
2021 | ||
88bc40e8 EP |
2022 | /* |
2023 | * if we want to get out of ps before disassoc (why?) we have | |
2024 | * to do it before sending disassoc, as otherwise the null-packet | |
2025 | * won't be valid. | |
2026 | */ | |
2027 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
2028 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2029 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
2030 | } | |
2031 | local->ps_sdata = NULL; | |
2032 | ||
ab095877 EP |
2033 | /* disable per-vif ps */ |
2034 | ieee80211_recalc_ps_vif(sdata); | |
2035 | ||
14f2ae83 EG |
2036 | /* make sure ongoing transmission finishes */ |
2037 | synchronize_net(); | |
2038 | ||
3b24f4c6 EG |
2039 | /* |
2040 | * drop any frame before deauth/disassoc, this can be data or | |
2041 | * management frame. Since we are disconnecting, we should not | |
2042 | * insist sending these frames which can take time and delay | |
2043 | * the disconnection and possible the roaming. | |
2044 | */ | |
f823981e | 2045 | if (tx) |
3b24f4c6 | 2046 | ieee80211_flush_queues(local, sdata, true); |
f823981e | 2047 | |
37ad3888 JB |
2048 | /* deauthenticate/disassociate now */ |
2049 | if (tx || frame_buf) | |
88a9e31c EP |
2050 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
2051 | reason, tx, frame_buf); | |
37ad3888 | 2052 | |
3b24f4c6 | 2053 | /* flush out frame - make sure the deauth was actually sent */ |
37ad3888 | 2054 | if (tx) |
3b24f4c6 | 2055 | ieee80211_flush_queues(local, sdata, false); |
37ad3888 | 2056 | |
88a9e31c | 2057 | /* clear bssid only after building the needed mgmt frames */ |
c84a67a2 | 2058 | eth_zero_addr(ifmgd->bssid); |
88a9e31c | 2059 | |
37ad3888 | 2060 | /* remove AP and TDLS peers */ |
d34ba216 | 2061 | sta_info_flush(sdata); |
37ad3888 JB |
2062 | |
2063 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
2064 | changed |= ieee80211_reset_erp_info(sdata); |
2065 | ||
f5e5bf25 | 2066 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
2067 | changed |= BSS_CHANGED_ASSOC; |
2068 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 2069 | |
67baf663 JD |
2070 | ifmgd->p2p_noa_index = -1; |
2071 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
2072 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 2073 | |
dd5ecfea | 2074 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
2075 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
2076 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
2077 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
2078 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 2079 | |
1ea6f9c0 | 2080 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 2081 | |
520eb820 KV |
2082 | del_timer_sync(&local->dynamic_ps_timer); |
2083 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
2084 | ||
68542962 | 2085 | /* Disable ARP filtering */ |
0f19b41e | 2086 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 2087 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2088 | |
3abead59 JB |
2089 | sdata->vif.bss_conf.qos = false; |
2090 | changed |= BSS_CHANGED_QOS; | |
2091 | ||
0aaffa9b JB |
2092 | /* The BSSID (not really interesting) and HT changed */ |
2093 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 2094 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 2095 | |
3abead59 JB |
2096 | /* disassociated - set to defaults now */ |
2097 | ieee80211_set_wmm_default(sdata, false); | |
2098 | ||
b9dcf712 JB |
2099 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
2100 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
2101 | del_timer_sync(&sdata->u.mgd.timer); | |
2102 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 2103 | |
826262c3 | 2104 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
2105 | sdata->vif.bss_conf.beacon_rate = NULL; |
2106 | ||
989c6505 | 2107 | ifmgd->have_beacon = false; |
826262c3 | 2108 | |
028e8da0 | 2109 | ifmgd->flags = 0; |
34a3740d | 2110 | mutex_lock(&local->mtx); |
028e8da0 | 2111 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
2112 | |
2113 | sdata->vif.csa_active = false; | |
0c21e632 | 2114 | ifmgd->csa_waiting_bcn = false; |
f84eaa10 | 2115 | ifmgd->csa_ignored_same_chan = false; |
a46992b4 LC |
2116 | if (sdata->csa_block_tx) { |
2117 | ieee80211_wake_vif_queues(local, sdata, | |
2118 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2119 | sdata->csa_block_tx = false; | |
2120 | } | |
34a3740d | 2121 | mutex_unlock(&local->mtx); |
2475b1cc | 2122 | |
02219b3a JB |
2123 | /* existing TX TSPEC sessions no longer exist */ |
2124 | memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); | |
2125 | cancel_delayed_work_sync(&ifmgd->tx_tspec_wk); | |
2126 | ||
2475b1cc | 2127 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
aa458d17 | 2128 | } |
f0706e82 | 2129 | |
3cf335d5 KV |
2130 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
2131 | struct ieee80211_hdr *hdr) | |
2132 | { | |
2133 | /* | |
2134 | * We can postpone the mgd.timer whenever receiving unicast frames | |
2135 | * from AP because we know that the connection is working both ways | |
2136 | * at that time. But multicast frames (and hence also beacons) must | |
2137 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
2138 | * data idle periods for sending the periodic probe request to the |
2139 | * AP we're connected to. | |
3cf335d5 | 2140 | */ |
b291ba11 JB |
2141 | if (is_multicast_ether_addr(hdr->addr1)) |
2142 | return; | |
2143 | ||
be099e82 | 2144 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 2145 | } |
f0706e82 | 2146 | |
4e5ff376 FF |
2147 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
2148 | { | |
2149 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 2150 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 2151 | |
133d40f9 | 2152 | mutex_lock(&local->mtx); |
392b9ffb SG |
2153 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
2154 | goto out; | |
4e5ff376 | 2155 | |
925e64c3 | 2156 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
2157 | |
2158 | mutex_lock(&local->iflist_mtx); | |
2159 | ieee80211_recalc_ps(local, -1); | |
2160 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 | 2161 | |
30686bf7 | 2162 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
133d40f9 | 2163 | goto out; |
4e5ff376 FF |
2164 | |
2165 | /* | |
2166 | * We've received a probe response, but are not sure whether | |
2167 | * we have or will be receiving any beacons or data, so let's | |
2168 | * schedule the timers again, just in case. | |
2169 | */ | |
2170 | ieee80211_sta_reset_beacon_monitor(sdata); | |
2171 | ||
2172 | mod_timer(&ifmgd->conn_mon_timer, | |
2173 | round_jiffies_up(jiffies + | |
2174 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 2175 | out: |
133d40f9 | 2176 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
2177 | } |
2178 | ||
02219b3a JB |
2179 | static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, |
2180 | struct ieee80211_hdr *hdr, | |
2181 | u16 tx_time) | |
2182 | { | |
2183 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2184 | u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; | |
2185 | int ac = ieee80211_ac_from_tid(tid); | |
2186 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
2187 | unsigned long now = jiffies; | |
2188 | ||
2189 | if (likely(!tx_tspec->admitted_time)) | |
2190 | return; | |
2191 | ||
2192 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
2193 | tx_tspec->consumed_tx_time = 0; | |
2194 | tx_tspec->time_slice_start = now; | |
2195 | ||
2196 | if (tx_tspec->downgraded) { | |
2197 | tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
2198 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | if (tx_tspec->downgraded) | |
2203 | return; | |
2204 | ||
2205 | tx_tspec->consumed_tx_time += tx_time; | |
2206 | ||
2207 | if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { | |
2208 | tx_tspec->downgraded = true; | |
2209 | tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; | |
2210 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2211 | } | |
2212 | } | |
2213 | ||
4e5ff376 | 2214 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
02219b3a | 2215 | struct ieee80211_hdr *hdr, bool ack, u16 tx_time) |
4e5ff376 | 2216 | { |
02219b3a JB |
2217 | ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); |
2218 | ||
75706d0e | 2219 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
2220 | return; |
2221 | ||
4e5ff376 FF |
2222 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
2223 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 2224 | if (ack) |
cab1c7fd | 2225 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
2226 | else |
2227 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 2228 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 2229 | return; |
4e5ff376 | 2230 | } |
cab1c7fd WD |
2231 | |
2232 | if (ack) | |
2233 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
2234 | } |
2235 | ||
a43abf29 ML |
2236 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
2237 | { | |
2238 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2239 | const u8 *ssid; | |
f01a067d | 2240 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 2241 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
2242 | |
2243 | /* | |
2244 | * Try sending broadcast probe requests for the last three | |
2245 | * probe requests after the first ones failed since some | |
2246 | * buggy APs only support broadcast probe requests. | |
2247 | */ | |
2248 | if (ifmgd->probe_send_count >= unicast_limit) | |
2249 | dst = NULL; | |
a43abf29 | 2250 | |
4e5ff376 FF |
2251 | /* |
2252 | * When the hardware reports an accurate Tx ACK status, it's | |
2253 | * better to send a nullfunc frame instead of a probe request, | |
2254 | * as it will kick us off the AP quickly if we aren't associated | |
2255 | * anymore. The timeout will be reset if the frame is ACKed by | |
2256 | * the AP. | |
2257 | */ | |
992e68bf SD |
2258 | ifmgd->probe_send_count++; |
2259 | ||
30686bf7 | 2260 | if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) { |
04ac3c0e | 2261 | ifmgd->nullfunc_failed = false; |
4e5ff376 | 2262 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 2263 | } else { |
88c868c4 SG |
2264 | int ssid_len; |
2265 | ||
9caf0364 | 2266 | rcu_read_lock(); |
4e5ff376 | 2267 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2268 | if (WARN_ON_ONCE(ssid == NULL)) |
2269 | ssid_len = 0; | |
2270 | else | |
2271 | ssid_len = ssid[1]; | |
2272 | ||
a73f8e21 | 2273 | ieee80211_send_probe_req(sdata, sdata->vif.addr, dst, |
a344d677 | 2274 | ssid + 2, ssid_len, NULL, |
1672c0e3 | 2275 | 0, (u32) -1, true, 0, |
55de908a | 2276 | ifmgd->associated->channel, false); |
9caf0364 | 2277 | rcu_read_unlock(); |
4e5ff376 | 2278 | } |
a43abf29 | 2279 | |
180205bd | 2280 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2281 | run_again(sdata, ifmgd->probe_timeout); |
a43abf29 ML |
2282 | } |
2283 | ||
b291ba11 JB |
2284 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2285 | bool beacon) | |
04de8381 | 2286 | { |
04de8381 | 2287 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2288 | bool already = false; |
34bfc411 | 2289 | |
9607e6b6 | 2290 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2291 | return; |
2292 | ||
8d61ffa5 | 2293 | sdata_lock(sdata); |
77fdaa12 JB |
2294 | |
2295 | if (!ifmgd->associated) | |
2296 | goto out; | |
2297 | ||
133d40f9 SG |
2298 | mutex_lock(&sdata->local->mtx); |
2299 | ||
2300 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2301 | mutex_unlock(&sdata->local->mtx); | |
2302 | goto out; | |
2303 | } | |
2304 | ||
a13fbe54 | 2305 | if (beacon) { |
bdcbd8e0 | 2306 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2307 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2308 | beacon_loss_count); | |
bdcbd8e0 | 2309 | |
98f03342 | 2310 | ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); |
a13fbe54 | 2311 | } |
04de8381 | 2312 | |
b291ba11 JB |
2313 | /* |
2314 | * The driver/our work has already reported this event or the | |
2315 | * connection monitoring has kicked in and we have already sent | |
2316 | * a probe request. Or maybe the AP died and the driver keeps | |
2317 | * reporting until we disassociate... | |
2318 | * | |
2319 | * In either case we have to ignore the current call to this | |
2320 | * function (except for setting the correct probe reason bit) | |
2321 | * because otherwise we would reset the timer every time and | |
2322 | * never check whether we received a probe response! | |
2323 | */ | |
392b9ffb | 2324 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2325 | already = true; |
2326 | ||
12b5f34d EP |
2327 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2328 | ||
133d40f9 SG |
2329 | mutex_unlock(&sdata->local->mtx); |
2330 | ||
b291ba11 JB |
2331 | if (already) |
2332 | goto out; | |
2333 | ||
4e751843 JB |
2334 | mutex_lock(&sdata->local->iflist_mtx); |
2335 | ieee80211_recalc_ps(sdata->local, -1); | |
2336 | mutex_unlock(&sdata->local->iflist_mtx); | |
2337 | ||
a43abf29 ML |
2338 | ifmgd->probe_send_count = 0; |
2339 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2340 | out: |
8d61ffa5 | 2341 | sdata_unlock(sdata); |
04de8381 KV |
2342 | } |
2343 | ||
a619a4c0 JO |
2344 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2345 | struct ieee80211_vif *vif) | |
2346 | { | |
2347 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2348 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2349 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2350 | struct sk_buff *skb; |
2351 | const u8 *ssid; | |
88c868c4 | 2352 | int ssid_len; |
a619a4c0 JO |
2353 | |
2354 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2355 | return NULL; | |
2356 | ||
8d61ffa5 | 2357 | sdata_assert_lock(sdata); |
a619a4c0 | 2358 | |
d9b3b28b EP |
2359 | if (ifmgd->associated) |
2360 | cbss = ifmgd->associated; | |
2361 | else if (ifmgd->auth_data) | |
2362 | cbss = ifmgd->auth_data->bss; | |
2363 | else if (ifmgd->assoc_data) | |
2364 | cbss = ifmgd->assoc_data->bss; | |
2365 | else | |
a619a4c0 JO |
2366 | return NULL; |
2367 | ||
9caf0364 | 2368 | rcu_read_lock(); |
d9b3b28b | 2369 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2370 | if (WARN_ON_ONCE(ssid == NULL)) |
2371 | ssid_len = 0; | |
2372 | else | |
2373 | ssid_len = ssid[1]; | |
2374 | ||
a344d677 | 2375 | skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, |
55de908a | 2376 | (u32) -1, cbss->channel, |
6b77863b | 2377 | ssid + 2, ssid_len, |
85a237fe | 2378 | NULL, 0, true); |
9caf0364 | 2379 | rcu_read_unlock(); |
a619a4c0 JO |
2380 | |
2381 | return skb; | |
2382 | } | |
2383 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2384 | ||
a90faa9d EG |
2385 | static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, |
2386 | const u8 *buf, size_t len, bool tx, | |
2387 | u16 reason) | |
2388 | { | |
2389 | struct ieee80211_event event = { | |
2390 | .type = MLME_EVENT, | |
2391 | .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, | |
2392 | .u.mlme.reason = reason, | |
2393 | }; | |
2394 | ||
2395 | if (tx) | |
2396 | cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); | |
2397 | else | |
2398 | cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); | |
2399 | ||
2400 | drv_event_callback(sdata->local, sdata, &event); | |
2401 | } | |
2402 | ||
eef9e54c | 2403 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2404 | { |
59af6928 | 2405 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2406 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2407 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2408 | |
8d61ffa5 | 2409 | sdata_lock(sdata); |
1e4dcd01 | 2410 | if (!ifmgd->associated) { |
8d61ffa5 | 2411 | sdata_unlock(sdata); |
1e4dcd01 JO |
2412 | return; |
2413 | } | |
2414 | ||
37ad3888 JB |
2415 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2416 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2417 | true, frame_buf); |
59af6928 | 2418 | mutex_lock(&local->mtx); |
7578d575 | 2419 | sdata->vif.csa_active = false; |
0c21e632 | 2420 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2421 | if (sdata->csa_block_tx) { |
2422 | ieee80211_wake_vif_queues(local, sdata, | |
2423 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2424 | sdata->csa_block_tx = false; | |
2425 | } | |
59af6928 | 2426 | mutex_unlock(&local->mtx); |
7da7cc1d | 2427 | |
a90faa9d EG |
2428 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
2429 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
2430 | ||
8d61ffa5 | 2431 | sdata_unlock(sdata); |
1e4dcd01 JO |
2432 | } |
2433 | ||
cc74c0c7 | 2434 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2435 | { |
2436 | struct ieee80211_sub_if_data *sdata = | |
2437 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2438 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2439 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2440 | struct sta_info *sta; | |
2441 | ||
2442 | if (ifmgd->associated) { | |
30fa9047 | 2443 | rcu_read_lock(); |
a85e1d55 PS |
2444 | sta = sta_info_get(sdata, ifmgd->bssid); |
2445 | if (sta) | |
2446 | sta->beacon_loss_count++; | |
30fa9047 | 2447 | rcu_read_unlock(); |
a85e1d55 | 2448 | } |
b291ba11 | 2449 | |
682bd38b | 2450 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2451 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2452 | ifmgd->bssid); | |
eef9e54c | 2453 | __ieee80211_disconnect(sdata); |
882a7c69 | 2454 | } else { |
1e4dcd01 | 2455 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2456 | } |
2457 | } | |
2458 | ||
2459 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2460 | { | |
2461 | struct ieee80211_sub_if_data *sdata = | |
2462 | container_of(work, struct ieee80211_sub_if_data, | |
2463 | u.mgd.csa_connection_drop_work); | |
2464 | ||
eef9e54c | 2465 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2466 | } |
2467 | ||
04de8381 KV |
2468 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2469 | { | |
2470 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2471 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2472 | |
b5878a2d JB |
2473 | trace_api_beacon_loss(sdata); |
2474 | ||
682bd38b | 2475 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2476 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2477 | } |
2478 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2479 | ||
1e4dcd01 JO |
2480 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2481 | { | |
2482 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2483 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2484 | ||
b5878a2d JB |
2485 | trace_api_connection_loss(sdata); |
2486 | ||
682bd38b | 2487 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2488 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2489 | } | |
2490 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2491 | ||
2492 | ||
66e67e41 JB |
2493 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2494 | bool assoc) | |
2495 | { | |
2496 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2497 | ||
8d61ffa5 | 2498 | sdata_assert_lock(sdata); |
66e67e41 | 2499 | |
66e67e41 | 2500 | if (!assoc) { |
c1e140bf EG |
2501 | /* |
2502 | * we are not authenticated yet, the only timer that could be | |
2503 | * running is the timeout for the authentication response which | |
2504 | * which is not relevant anymore. | |
2505 | */ | |
2506 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2507 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); |
2508 | ||
c84a67a2 | 2509 | eth_zero_addr(sdata->u.mgd.bssid); |
66e67e41 | 2510 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
028e8da0 | 2511 | sdata->u.mgd.flags = 0; |
34a3740d | 2512 | mutex_lock(&sdata->local->mtx); |
55de908a | 2513 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2514 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2515 | } |
2516 | ||
5b112d3d | 2517 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2518 | kfree(auth_data); |
2519 | sdata->u.mgd.auth_data = NULL; | |
2520 | } | |
2521 | ||
c9c99f89 JB |
2522 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2523 | bool assoc) | |
2524 | { | |
2525 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2526 | ||
2527 | sdata_assert_lock(sdata); | |
2528 | ||
2529 | if (!assoc) { | |
2530 | /* | |
2531 | * we are not associated yet, the only timer that could be | |
2532 | * running is the timeout for the association response which | |
2533 | * which is not relevant anymore. | |
2534 | */ | |
2535 | del_timer_sync(&sdata->u.mgd.timer); | |
2536 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2537 | ||
2538 | eth_zero_addr(sdata->u.mgd.bssid); | |
2539 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
2540 | sdata->u.mgd.flags = 0; | |
2541 | mutex_lock(&sdata->local->mtx); | |
2542 | ieee80211_vif_release_channel(sdata); | |
2543 | mutex_unlock(&sdata->local->mtx); | |
2544 | } | |
2545 | ||
2546 | kfree(assoc_data); | |
2547 | sdata->u.mgd.assoc_data = NULL; | |
2548 | } | |
2549 | ||
66e67e41 JB |
2550 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
2551 | struct ieee80211_mgmt *mgmt, size_t len) | |
2552 | { | |
1672c0e3 | 2553 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2554 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2555 | u8 *pos; | |
2556 | struct ieee802_11_elems elems; | |
1672c0e3 | 2557 | u32 tx_flags = 0; |
66e67e41 JB |
2558 | |
2559 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2560 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2561 | if (!elems.challenge) |
2562 | return; | |
2563 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2564 | drv_mgd_prepare_tx(sdata->local, sdata); |
30686bf7 | 2565 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
2566 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |
2567 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2568 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2569 | elems.challenge - 2, elems.challenge_len + 2, |
2570 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2571 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2572 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2573 | } |
2574 | ||
8d61ffa5 JB |
2575 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2576 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2577 | { |
2578 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2579 | u8 bssid[ETH_ALEN]; | |
2580 | u16 auth_alg, auth_transaction, status_code; | |
2581 | struct sta_info *sta; | |
a9409093 EG |
2582 | struct ieee80211_event event = { |
2583 | .type = MLME_EVENT, | |
2584 | .u.mlme.data = AUTH_EVENT, | |
2585 | }; | |
66e67e41 | 2586 | |
8d61ffa5 | 2587 | sdata_assert_lock(sdata); |
66e67e41 JB |
2588 | |
2589 | if (len < 24 + 6) | |
8d61ffa5 | 2590 | return; |
66e67e41 JB |
2591 | |
2592 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2593 | return; |
66e67e41 JB |
2594 | |
2595 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2596 | ||
b203ca39 | 2597 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2598 | return; |
66e67e41 JB |
2599 | |
2600 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2601 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2602 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2603 | ||
2604 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2605 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2606 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2607 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2608 | auth_transaction, | |
2609 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2610 | return; |
0f4126e8 | 2611 | } |
66e67e41 JB |
2612 | |
2613 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2614 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2615 | mgmt->sa, status_code); | |
dac211ec | 2616 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2617 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
a9409093 EG |
2618 | event.u.mlme.status = MLME_DENIED; |
2619 | event.u.mlme.reason = status_code; | |
2620 | drv_event_callback(sdata->local, sdata, &event); | |
8d61ffa5 | 2621 | return; |
66e67e41 JB |
2622 | } |
2623 | ||
2624 | switch (ifmgd->auth_data->algorithm) { | |
2625 | case WLAN_AUTH_OPEN: | |
2626 | case WLAN_AUTH_LEAP: | |
2627 | case WLAN_AUTH_FT: | |
6b8ece3a | 2628 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2629 | break; |
2630 | case WLAN_AUTH_SHARED_KEY: | |
2631 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2632 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2633 | /* need another frame */ | |
8d61ffa5 | 2634 | return; |
66e67e41 JB |
2635 | } |
2636 | break; | |
2637 | default: | |
2638 | WARN_ONCE(1, "invalid auth alg %d", | |
2639 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2640 | return; |
66e67e41 JB |
2641 | } |
2642 | ||
a9409093 EG |
2643 | event.u.mlme.status = MLME_SUCCESS; |
2644 | drv_event_callback(sdata->local, sdata, &event); | |
bdcbd8e0 | 2645 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2646 | ifmgd->auth_data->done = true; |
2647 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2648 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2649 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2650 | |
6b8ece3a JM |
2651 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2652 | ifmgd->auth_data->expected_transaction != 2) { | |
2653 | /* | |
2654 | * Report auth frame to user space for processing since another | |
2655 | * round of Authentication frames is still needed. | |
2656 | */ | |
6ff57cf8 | 2657 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2658 | return; |
6b8ece3a JM |
2659 | } |
2660 | ||
66e67e41 JB |
2661 | /* move station state to auth */ |
2662 | mutex_lock(&sdata->local->sta_mtx); | |
2663 | sta = sta_info_get(sdata, bssid); | |
2664 | if (!sta) { | |
2665 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2666 | goto out_err; | |
2667 | } | |
2668 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2669 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2670 | goto out_err; |
2671 | } | |
2672 | mutex_unlock(&sdata->local->sta_mtx); | |
2673 | ||
6ff57cf8 | 2674 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2675 | return; |
66e67e41 JB |
2676 | out_err: |
2677 | mutex_unlock(&sdata->local->sta_mtx); | |
2678 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2679 | } |
2680 | ||
dfa1ad29 CO |
2681 | #define case_WLAN(type) \ |
2682 | case WLAN_REASON_##type: return #type | |
2683 | ||
2684 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2685 | { | |
2686 | switch (reason_code) { | |
2687 | case_WLAN(UNSPECIFIED); | |
2688 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2689 | case_WLAN(DEAUTH_LEAVING); | |
2690 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2691 | case_WLAN(DISASSOC_AP_BUSY); | |
2692 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2693 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2694 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2695 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2696 | case_WLAN(DISASSOC_BAD_POWER); | |
2697 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2698 | case_WLAN(INVALID_IE); | |
2699 | case_WLAN(MIC_FAILURE); | |
2700 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2701 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2702 | case_WLAN(IE_DIFFERENT); | |
2703 | case_WLAN(INVALID_GROUP_CIPHER); | |
2704 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2705 | case_WLAN(INVALID_AKMP); | |
2706 | case_WLAN(UNSUPP_RSN_VERSION); | |
2707 | case_WLAN(INVALID_RSN_IE_CAP); | |
2708 | case_WLAN(IEEE8021X_FAILED); | |
2709 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2710 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2711 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2712 | case_WLAN(DISASSOC_LOW_ACK); | |
2713 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2714 | case_WLAN(QSTA_LEAVE_QBSS); | |
2715 | case_WLAN(QSTA_NOT_USE); | |
2716 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2717 | case_WLAN(QSTA_TIMEOUT); | |
2718 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2719 | case_WLAN(MESH_PEER_CANCELED); | |
2720 | case_WLAN(MESH_MAX_PEERS); | |
2721 | case_WLAN(MESH_CONFIG); | |
2722 | case_WLAN(MESH_CLOSE); | |
2723 | case_WLAN(MESH_MAX_RETRIES); | |
2724 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2725 | case_WLAN(MESH_INVALID_GTK); | |
2726 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2727 | case_WLAN(MESH_INVALID_SECURITY); | |
2728 | case_WLAN(MESH_PATH_ERROR); | |
2729 | case_WLAN(MESH_PATH_NOFORWARD); | |
2730 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2731 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2732 | case_WLAN(MESH_CHAN_REGULATORY); | |
2733 | case_WLAN(MESH_CHAN); | |
2734 | default: return "<unknown>"; | |
2735 | } | |
2736 | } | |
66e67e41 | 2737 | |
8d61ffa5 JB |
2738 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2739 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2740 | { |
46900298 | 2741 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
c9c99f89 | 2742 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
f0706e82 | 2743 | |
8d61ffa5 | 2744 | sdata_assert_lock(sdata); |
66e67e41 | 2745 | |
f4ea83dd | 2746 | if (len < 24 + 2) |
8d61ffa5 | 2747 | return; |
f0706e82 | 2748 | |
c9c99f89 JB |
2749 | if (ifmgd->associated && |
2750 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) { | |
2751 | const u8 *bssid = ifmgd->associated->bssid; | |
77fdaa12 | 2752 | |
c9c99f89 JB |
2753 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2754 | bssid, reason_code, | |
2755 | ieee80211_get_reason_code_string(reason_code)); | |
f0706e82 | 2756 | |
c9c99f89 | 2757 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
f0706e82 | 2758 | |
c9c99f89 JB |
2759 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, |
2760 | reason_code); | |
2761 | return; | |
2762 | } | |
77fdaa12 | 2763 | |
c9c99f89 JB |
2764 | if (ifmgd->assoc_data && |
2765 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { | |
2766 | const u8 *bssid = ifmgd->assoc_data->bss->bssid; | |
37ad3888 | 2767 | |
c9c99f89 JB |
2768 | sdata_info(sdata, |
2769 | "deauthenticated from %pM while associating (Reason: %u=%s)\n", | |
2770 | bssid, reason_code, | |
2771 | ieee80211_get_reason_code_string(reason_code)); | |
2772 | ||
2773 | ieee80211_destroy_assoc_data(sdata, false); | |
2774 | ||
2775 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); | |
2776 | return; | |
2777 | } | |
f0706e82 JB |
2778 | } |
2779 | ||
2780 | ||
8d61ffa5 JB |
2781 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2782 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2783 | { |
46900298 | 2784 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2785 | u16 reason_code; |
2786 | ||
8d61ffa5 | 2787 | sdata_assert_lock(sdata); |
77fdaa12 | 2788 | |
66e67e41 | 2789 | if (len < 24 + 2) |
8d61ffa5 | 2790 | return; |
77fdaa12 | 2791 | |
66e67e41 | 2792 | if (!ifmgd->associated || |
b203ca39 | 2793 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2794 | return; |
f0706e82 JB |
2795 | |
2796 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2797 | ||
bdcbd8e0 JB |
2798 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2799 | mgmt->sa, reason_code); | |
f0706e82 | 2800 | |
37ad3888 JB |
2801 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2802 | ||
a90faa9d | 2803 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
2804 | } |
2805 | ||
c74d084f CL |
2806 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2807 | u8 *supp_rates, unsigned int supp_rates_len, | |
2808 | u32 *rates, u32 *basic_rates, | |
2809 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2810 | int *min_rate, int *min_rate_index, |
2811 | int shift, u32 rate_flags) | |
c74d084f CL |
2812 | { |
2813 | int i, j; | |
2814 | ||
2815 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2816 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2817 | bool is_basic = !!(supp_rates[i] & 0x80); |
2818 | ||
2103dec1 | 2819 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2820 | *have_higher_than_11mbit = true; |
2821 | ||
2822 | /* | |
2823 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2824 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2825 | * | |
2826 | * Note: Even through the membership selector and the basic | |
2827 | * rate flag share the same bit, they are not exactly | |
2828 | * the same. | |
2829 | */ | |
2830 | if (!!(supp_rates[i] & 0x80) && | |
2831 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2832 | continue; | |
2833 | ||
2834 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2835 | struct ieee80211_rate *br; |
2836 | int brate; | |
2837 | ||
2838 | br = &sband->bitrates[j]; | |
2839 | if ((rate_flags & br->flags) != rate_flags) | |
2840 | continue; | |
2841 | ||
2842 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2843 | if (brate == rate) { | |
c74d084f CL |
2844 | *rates |= BIT(j); |
2845 | if (is_basic) | |
2846 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2847 | if ((rate * 5) < *min_rate) { |
2848 | *min_rate = rate * 5; | |
c74d084f CL |
2849 | *min_rate_index = j; |
2850 | } | |
2851 | break; | |
2852 | } | |
2853 | } | |
2854 | } | |
2855 | } | |
f0706e82 | 2856 | |
66e67e41 JB |
2857 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, |
2858 | struct cfg80211_bss *cbss, | |
af6b6374 | 2859 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2860 | { |
46900298 | 2861 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2862 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2863 | struct ieee80211_supported_band *sband; |
f0706e82 | 2864 | struct sta_info *sta; |
af6b6374 | 2865 | u8 *pos; |
af6b6374 | 2866 | u16 capab_info, aid; |
f0706e82 | 2867 | struct ieee802_11_elems elems; |
bda3933a | 2868 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2869 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2870 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2871 | u32 changed = 0; |
c74d084f | 2872 | int err; |
35d865af | 2873 | bool ret; |
f0706e82 | 2874 | |
af6b6374 | 2875 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2876 | |
f0706e82 | 2877 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2878 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2879 | |
1dd84aa2 | 2880 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2881 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2882 | aid); | |
1dd84aa2 JB |
2883 | aid &= ~(BIT(15) | BIT(14)); |
2884 | ||
05cb9108 JB |
2885 | ifmgd->broken_ap = false; |
2886 | ||
2887 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2888 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2889 | aid); | |
05cb9108 JB |
2890 | aid = 0; |
2891 | ifmgd->broken_ap = true; | |
2892 | } | |
2893 | ||
af6b6374 | 2894 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2895 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2896 | |
f0706e82 | 2897 | if (!elems.supp_rates) { |
bdcbd8e0 | 2898 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2899 | return false; |
f0706e82 JB |
2900 | } |
2901 | ||
46900298 | 2902 | ifmgd->aid = aid; |
9041c1fa AN |
2903 | ifmgd->tdls_chan_switch_prohibited = |
2904 | elems.ext_capab && elems.ext_capab_len >= 5 && | |
2905 | (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); | |
f0706e82 | 2906 | |
35d865af JB |
2907 | /* |
2908 | * Some APs are erroneously not including some information in their | |
2909 | * (re)association response frames. Try to recover by using the data | |
2910 | * from the beacon or probe response. This seems to afflict mobile | |
2911 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2912 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2913 | */ | |
2914 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2915 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2916 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2917 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2918 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2919 | const struct cfg80211_bss_ies *ies; | |
2920 | struct ieee802_11_elems bss_elems; | |
2921 | ||
2922 | rcu_read_lock(); | |
2923 | ies = rcu_dereference(cbss->ies); | |
2924 | if (ies) | |
2925 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2926 | GFP_ATOMIC); | |
2927 | rcu_read_unlock(); | |
2928 | if (!bss_ies) | |
2929 | return false; | |
2930 | ||
2931 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2932 | false, &bss_elems); | |
2933 | if (assoc_data->wmm && | |
2934 | !elems.wmm_param && bss_elems.wmm_param) { | |
2935 | elems.wmm_param = bss_elems.wmm_param; | |
2936 | sdata_info(sdata, | |
2937 | "AP bug: WMM param missing from AssocResp\n"); | |
2938 | } | |
2939 | ||
2940 | /* | |
2941 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2942 | * have to include the IEs in the (re)association response. | |
2943 | */ | |
2944 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2945 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2946 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2947 | sdata_info(sdata, | |
2948 | "AP bug: HT capability missing from AssocResp\n"); | |
2949 | } | |
2950 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2951 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2952 | elems.ht_operation = bss_elems.ht_operation; | |
2953 | sdata_info(sdata, | |
2954 | "AP bug: HT operation missing from AssocResp\n"); | |
2955 | } | |
2956 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2957 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2958 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2959 | sdata_info(sdata, | |
2960 | "AP bug: VHT capa missing from AssocResp\n"); | |
2961 | } | |
2962 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2963 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2964 | elems.vht_operation = bss_elems.vht_operation; | |
2965 | sdata_info(sdata, | |
2966 | "AP bug: VHT operation missing from AssocResp\n"); | |
2967 | } | |
2968 | } | |
2969 | ||
30eb1dc2 JB |
2970 | /* |
2971 | * We previously checked these in the beacon/probe response, so | |
2972 | * they should be present here. This is just a safety net. | |
2973 | */ | |
2974 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2975 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2976 | sdata_info(sdata, | |
35d865af JB |
2977 | "HT AP is missing WMM params or HT capability/operation\n"); |
2978 | ret = false; | |
2979 | goto out; | |
30eb1dc2 JB |
2980 | } |
2981 | ||
2982 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2983 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2984 | sdata_info(sdata, | |
35d865af JB |
2985 | "VHT AP is missing VHT capability/operation\n"); |
2986 | ret = false; | |
2987 | goto out; | |
30eb1dc2 JB |
2988 | } |
2989 | ||
2a33bee2 GE |
2990 | mutex_lock(&sdata->local->sta_mtx); |
2991 | /* | |
2992 | * station info was already allocated and inserted before | |
2993 | * the association and should be available to us | |
2994 | */ | |
7852e361 | 2995 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2996 | if (WARN_ON(!sta)) { |
2997 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2998 | ret = false; |
2999 | goto out; | |
77fdaa12 | 3000 | } |
05e5e883 | 3001 | |
55de908a | 3002 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 3003 | |
30eb1dc2 | 3004 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 3005 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 3006 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 3007 | elems.ht_cap_elem, sta); |
64f68e5d | 3008 | |
818255ea MP |
3009 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
3010 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 3011 | elems.vht_cap_elem, sta); |
818255ea | 3012 | |
30eb1dc2 JB |
3013 | /* |
3014 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
3015 | * in their association response, so ignore that data for our own | |
3016 | * configuration. If it changed since the last beacon, we'll get the | |
3017 | * next beacon and update then. | |
3018 | */ | |
1128958d | 3019 | |
bee7f586 JB |
3020 | /* |
3021 | * If an operating mode notification IE is present, override the | |
3022 | * NSS calculation (that would be done in rate_control_rate_init()) | |
3023 | * and use the # of streams from that element. | |
3024 | */ | |
3025 | if (elems.opmode_notif && | |
3026 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
3027 | u8 nss; | |
3028 | ||
3029 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
3030 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
3031 | nss += 1; | |
3032 | sta->sta.rx_nss = nss; | |
3033 | } | |
3034 | ||
4b7679a5 | 3035 | rate_control_rate_init(sta); |
f0706e82 | 3036 | |
64a8cef4 | 3037 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { |
c2c98fde | 3038 | set_sta_flag(sta, WLAN_STA_MFP); |
64a8cef4 SJ |
3039 | sta->sta.mfp = true; |
3040 | } else { | |
3041 | sta->sta.mfp = false; | |
3042 | } | |
5394af4d | 3043 | |
527871d7 | 3044 | sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS; |
ddf4ac53 | 3045 | |
3e4d40fa | 3046 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
3047 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
3048 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
3049 | if (err) { | |
bdcbd8e0 JB |
3050 | sdata_info(sdata, |
3051 | "failed to move station %pM to desired state\n", | |
3052 | sta->sta.addr); | |
c8987876 JB |
3053 | WARN_ON(__sta_info_destroy(sta)); |
3054 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3055 | ret = false; |
3056 | goto out; | |
c8987876 JB |
3057 | } |
3058 | ||
7852e361 | 3059 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 3060 | |
f2176d72 JO |
3061 | /* |
3062 | * Always handle WMM once after association regardless | |
3063 | * of the first value the AP uses. Setting -1 here has | |
3064 | * that effect because the AP values is an unsigned | |
3065 | * 4-bit value. | |
3066 | */ | |
3067 | ifmgd->wmm_last_param_set = -1; | |
3068 | ||
095d81ce | 3069 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 3070 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 3071 | elems.wmm_param_len); |
aa837e1d | 3072 | else |
3abead59 JB |
3073 | ieee80211_set_wmm_default(sdata, false); |
3074 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 3075 | |
60f8b39c JB |
3076 | /* set AID and assoc capability, |
3077 | * ieee80211_set_associated() will tell the driver */ | |
3078 | bss_conf->aid = aid; | |
3079 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 3080 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 3081 | |
d524215f FF |
3082 | /* |
3083 | * If we're using 4-addr mode, let the AP know that we're | |
3084 | * doing so, so that it can create the STA VLAN on its side | |
3085 | */ | |
3086 | if (ifmgd->use_4addr) | |
3087 | ieee80211_send_4addr_nullfunc(local, sdata); | |
3088 | ||
15b7b062 | 3089 | /* |
b291ba11 JB |
3090 | * Start timer to probe the connection to the AP now. |
3091 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 3092 | */ |
b291ba11 | 3093 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 3094 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 3095 | |
35d865af JB |
3096 | ret = true; |
3097 | out: | |
3098 | kfree(bss_ies); | |
3099 | return ret; | |
f0706e82 JB |
3100 | } |
3101 | ||
8d61ffa5 JB |
3102 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
3103 | struct ieee80211_mgmt *mgmt, | |
3104 | size_t len) | |
66e67e41 JB |
3105 | { |
3106 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3107 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
3108 | u16 capab_info, status_code, aid; | |
3109 | struct ieee802_11_elems elems; | |
b0b6aa2c | 3110 | int ac, uapsd_queues = -1; |
66e67e41 JB |
3111 | u8 *pos; |
3112 | bool reassoc; | |
8d61ffa5 | 3113 | struct cfg80211_bss *bss; |
d0d1a12f EG |
3114 | struct ieee80211_event event = { |
3115 | .type = MLME_EVENT, | |
3116 | .u.mlme.data = ASSOC_EVENT, | |
3117 | }; | |
66e67e41 | 3118 | |
8d61ffa5 | 3119 | sdata_assert_lock(sdata); |
66e67e41 JB |
3120 | |
3121 | if (!assoc_data) | |
8d61ffa5 | 3122 | return; |
b203ca39 | 3123 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 3124 | return; |
66e67e41 JB |
3125 | |
3126 | /* | |
3127 | * AssocResp and ReassocResp have identical structure, so process both | |
3128 | * of them in this function. | |
3129 | */ | |
3130 | ||
3131 | if (len < 24 + 6) | |
8d61ffa5 | 3132 | return; |
66e67e41 JB |
3133 | |
3134 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
3135 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
3136 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
3137 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
3138 | ||
bdcbd8e0 JB |
3139 | sdata_info(sdata, |
3140 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
3141 | reassoc ? "Rea" : "A", mgmt->sa, | |
3142 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
3143 | |
3144 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 3145 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
3146 | |
3147 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
3148 | elems.timeout_int && |
3149 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 3150 | u32 tu, ms; |
79ba1d89 | 3151 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 3152 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
3153 | sdata_info(sdata, |
3154 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
3155 | mgmt->sa, tu, ms); | |
66e67e41 | 3156 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 3157 | assoc_data->timeout_started = true; |
66e67e41 | 3158 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
3159 | run_again(sdata, assoc_data->timeout); |
3160 | return; | |
66e67e41 JB |
3161 | } |
3162 | ||
8d61ffa5 | 3163 | bss = assoc_data->bss; |
66e67e41 JB |
3164 | |
3165 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
3166 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
3167 | mgmt->sa, status_code); | |
66e67e41 | 3168 | ieee80211_destroy_assoc_data(sdata, false); |
d0d1a12f EG |
3169 | event.u.mlme.status = MLME_DENIED; |
3170 | event.u.mlme.reason = status_code; | |
3171 | drv_event_callback(sdata->local, sdata, &event); | |
66e67e41 | 3172 | } else { |
8d61ffa5 | 3173 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 3174 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 3175 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 3176 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 3177 | return; |
66e67e41 | 3178 | } |
d0d1a12f EG |
3179 | event.u.mlme.status = MLME_SUCCESS; |
3180 | drv_event_callback(sdata->local, sdata, &event); | |
635d999f | 3181 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
3182 | |
3183 | /* | |
3184 | * destroy assoc_data afterwards, as otherwise an idle | |
3185 | * recalc after assoc_data is NULL but before associated | |
3186 | * is set can cause the interface to go idle | |
3187 | */ | |
3188 | ieee80211_destroy_assoc_data(sdata, true); | |
b0b6aa2c EP |
3189 | |
3190 | /* get uapsd queues configuration */ | |
3191 | uapsd_queues = 0; | |
3192 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3193 | if (sdata->tx_conf[ac].uapsd) | |
3194 | uapsd_queues |= BIT(ac); | |
66e67e41 JB |
3195 | } |
3196 | ||
b0b6aa2c | 3197 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues); |
66e67e41 | 3198 | } |
8e3c1b77 | 3199 | |
98c8fccf | 3200 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 3201 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 3202 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 3203 | struct ieee802_11_elems *elems) |
98c8fccf JB |
3204 | { |
3205 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 3206 | struct ieee80211_bss *bss; |
98c8fccf | 3207 | struct ieee80211_channel *channel; |
56007a02 | 3208 | |
8d61ffa5 | 3209 | sdata_assert_lock(sdata); |
b4f286a1 | 3210 | |
3afc2167 EG |
3211 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
3212 | if (!channel) | |
98c8fccf JB |
3213 | return; |
3214 | ||
98c8fccf | 3215 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 3216 | channel); |
817cee76 | 3217 | if (bss) { |
817cee76 | 3218 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 3219 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 3220 | } |
f0706e82 JB |
3221 | } |
3222 | ||
3223 | ||
f698d856 | 3224 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 3225 | struct sk_buff *skb) |
f0706e82 | 3226 | { |
af6b6374 | 3227 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 3228 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
3229 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
3230 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
3231 | struct ieee802_11_elems elems; |
3232 | ||
15b7b062 KV |
3233 | ifmgd = &sdata->u.mgd; |
3234 | ||
8d61ffa5 | 3235 | sdata_assert_lock(sdata); |
77fdaa12 | 3236 | |
b203ca39 | 3237 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
3238 | return; /* ignore ProbeResp to foreign address */ |
3239 | ||
ae6a44e3 EK |
3240 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
3241 | if (baselen > len) | |
3242 | return; | |
3243 | ||
3244 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 3245 | false, &elems); |
ae6a44e3 | 3246 | |
d45c4172 | 3247 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 3248 | |
77fdaa12 | 3249 | if (ifmgd->associated && |
b203ca39 | 3250 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 3251 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
3252 | |
3253 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 3254 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 3255 | /* got probe response, continue with auth */ |
bdcbd8e0 | 3256 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
3257 | ifmgd->auth_data->tries = 0; |
3258 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 3259 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 3260 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3261 | } |
f0706e82 JB |
3262 | } |
3263 | ||
d91f36db JB |
3264 | /* |
3265 | * This is the canonical list of information elements we care about, | |
3266 | * the filter code also gives us all changes to the Microsoft OUI | |
c8d65917 SG |
3267 | * (00:50:F2) vendor IE which is used for WMM which we need to track, |
3268 | * as well as the DTPC IE (part of the Cisco OUI) used for signaling | |
3269 | * changes to requested client power. | |
d91f36db JB |
3270 | * |
3271 | * We implement beacon filtering in software since that means we can | |
3272 | * avoid processing the frame here and in cfg80211, and userspace | |
3273 | * will not be able to tell whether the hardware supports it or not. | |
3274 | * | |
3275 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
3276 | * add items it requires. It also needs to be able to tell us to | |
3277 | * look out for other vendor IEs. | |
3278 | */ | |
3279 | static const u64 care_about_ies = | |
1d4df3a5 JB |
3280 | (1ULL << WLAN_EID_COUNTRY) | |
3281 | (1ULL << WLAN_EID_ERP_INFO) | | |
3282 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
3283 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
3284 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
70a3fd6c JB |
3285 | (1ULL << WLAN_EID_HT_OPERATION) | |
3286 | (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN); | |
d91f36db | 3287 | |
8d61ffa5 JB |
3288 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
3289 | struct ieee80211_mgmt *mgmt, size_t len, | |
3290 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 3291 | { |
d91f36db | 3292 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 3293 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
3294 | size_t baselen; |
3295 | struct ieee802_11_elems elems; | |
f698d856 | 3296 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
3297 | struct ieee80211_chanctx_conf *chanctx_conf; |
3298 | struct ieee80211_channel *chan; | |
bee7f586 | 3299 | struct sta_info *sta; |
471b3efd | 3300 | u32 changed = 0; |
f87ad637 | 3301 | bool erp_valid; |
7a5158ef | 3302 | u8 erp_value = 0; |
d91f36db | 3303 | u32 ncrc; |
77fdaa12 | 3304 | u8 *bssid; |
8d61ffa5 | 3305 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 3306 | |
8d61ffa5 | 3307 | sdata_assert_lock(sdata); |
f0706e82 | 3308 | |
ae6a44e3 EK |
3309 | /* Process beacon from the current BSS */ |
3310 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3311 | if (baselen > len) | |
8d61ffa5 | 3312 | return; |
ae6a44e3 | 3313 | |
55de908a JB |
3314 | rcu_read_lock(); |
3315 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3316 | if (!chanctx_conf) { | |
3317 | rcu_read_unlock(); | |
8d61ffa5 | 3318 | return; |
55de908a JB |
3319 | } |
3320 | ||
4bf88530 | 3321 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 3322 | rcu_read_unlock(); |
8d61ffa5 | 3323 | return; |
55de908a | 3324 | } |
4bf88530 | 3325 | chan = chanctx_conf->def.chan; |
55de908a | 3326 | rcu_read_unlock(); |
f0706e82 | 3327 | |
c65dd147 | 3328 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 3329 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 3330 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 3331 | len - baselen, false, &elems); |
77fdaa12 | 3332 | |
d45c4172 | 3333 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
3334 | if (elems.tim && !elems.parse_error) { |
3335 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
3336 | ifmgd->dtim_period = tim_ie->dtim_period; | |
3337 | } | |
989c6505 | 3338 | ifmgd->have_beacon = true; |
c65dd147 | 3339 | ifmgd->assoc_data->need_beacon = false; |
30686bf7 | 3340 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
3341 | sdata->vif.bss_conf.sync_tsf = |
3342 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3343 | sdata->vif.bss_conf.sync_device_ts = | |
3344 | rx_status->device_timestamp; | |
3345 | if (elems.tim) | |
3346 | sdata->vif.bss_conf.sync_dtim_count = | |
3347 | elems.tim->dtim_count; | |
3348 | else | |
3349 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3350 | } | |
66e67e41 JB |
3351 | /* continue assoc process */ |
3352 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 3353 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
3354 | run_again(sdata, ifmgd->assoc_data->timeout); |
3355 | return; | |
66e67e41 | 3356 | } |
77fdaa12 | 3357 | |
66e67e41 | 3358 | if (!ifmgd->associated || |
b203ca39 | 3359 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 3360 | return; |
66e67e41 | 3361 | bssid = ifmgd->associated->bssid; |
f0706e82 | 3362 | |
17e4ec14 JM |
3363 | /* Track average RSSI from the Beacon frames of the current AP */ |
3364 | ifmgd->last_beacon_signal = rx_status->signal; | |
3365 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
3366 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 3367 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 3368 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3369 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3370 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
3371 | } else { |
3372 | ifmgd->ave_beacon_signal = | |
3373 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
3374 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
3375 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 3376 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3377 | } |
615f7b9b MV |
3378 | |
3379 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
3380 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
3381 | int sig = ifmgd->ave_beacon_signal; | |
3382 | int last_sig = ifmgd->last_ave_beacon_signal; | |
a8182929 EG |
3383 | struct ieee80211_event event = { |
3384 | .type = RSSI_EVENT, | |
3385 | }; | |
615f7b9b MV |
3386 | |
3387 | /* | |
3388 | * if signal crosses either of the boundaries, invoke callback | |
3389 | * with appropriate parameters | |
3390 | */ | |
3391 | if (sig > ifmgd->rssi_max_thold && | |
3392 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3393 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3394 | event.u.rssi.data = RSSI_EVENT_HIGH; |
3395 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3396 | } else if (sig < ifmgd->rssi_min_thold && |
3397 | (last_sig >= ifmgd->rssi_max_thold || | |
3398 | last_sig == 0)) { | |
3399 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3400 | event.u.rssi.data = RSSI_EVENT_LOW; |
3401 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3402 | } |
3403 | } | |
3404 | ||
17e4ec14 | 3405 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3406 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3407 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
3408 | int sig = ifmgd->ave_beacon_signal / 16; |
3409 | int last_event = ifmgd->last_cqm_event_signal; | |
3410 | int thold = bss_conf->cqm_rssi_thold; | |
3411 | int hyst = bss_conf->cqm_rssi_hyst; | |
3412 | if (sig < thold && | |
3413 | (last_event == 0 || sig < last_event - hyst)) { | |
3414 | ifmgd->last_cqm_event_signal = sig; | |
3415 | ieee80211_cqm_rssi_notify( | |
3416 | &sdata->vif, | |
3417 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3418 | GFP_KERNEL); | |
3419 | } else if (sig > thold && | |
3420 | (last_event == 0 || sig > last_event + hyst)) { | |
3421 | ifmgd->last_cqm_event_signal = sig; | |
3422 | ieee80211_cqm_rssi_notify( | |
3423 | &sdata->vif, | |
3424 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3425 | GFP_KERNEL); | |
3426 | } | |
3427 | } | |
3428 | ||
392b9ffb | 3429 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3430 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3431 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3432 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3433 | } |
3434 | ||
b291ba11 JB |
3435 | /* |
3436 | * Push the beacon loss detection into the future since | |
3437 | * we are processing a beacon from the AP just now. | |
3438 | */ | |
d3a910a8 | 3439 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3440 | |
d91f36db JB |
3441 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3442 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3443 | len - baselen, false, &elems, |
d91f36db JB |
3444 | care_about_ies, ncrc); |
3445 | ||
30686bf7 | 3446 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) { |
f87ad637 RR |
3447 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3448 | elems.tim_len, | |
3449 | ifmgd->aid); | |
1fb3606b | 3450 | if (directed_tim) { |
572e0012 | 3451 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3452 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3453 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3454 | ieee80211_hw_config(local, | |
3455 | IEEE80211_CONF_CHANGE_PS); | |
3456 | } | |
572e0012 | 3457 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3458 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3459 | local->pspolling = true; |
3460 | ||
3461 | /* | |
3462 | * Here is assumed that the driver will be | |
3463 | * able to send ps-poll frame and receive a | |
3464 | * response even though power save mode is | |
3465 | * enabled, but some drivers might require | |
3466 | * to disable power save here. This needs | |
3467 | * to be investigated. | |
3468 | */ | |
3469 | ieee80211_send_pspoll(local, sdata); | |
3470 | } | |
a97b77b9 VN |
3471 | } |
3472 | } | |
7a5158ef | 3473 | |
488dd7b5 | 3474 | if (sdata->vif.p2p) { |
67baf663 | 3475 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3476 | int ret; |
3477 | ||
3478 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3479 | len - baselen, | |
3480 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3481 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3482 | if (ret >= 2) { |
3483 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3484 | /* valid noa_attr and index changed */ | |
3485 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3486 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3487 | changed |= BSS_CHANGED_P2P_PS; | |
3488 | /* | |
3489 | * make sure we update all information, the CRC | |
3490 | * mechanism doesn't look at P2P attributes. | |
3491 | */ | |
3492 | ifmgd->beacon_crc_valid = false; | |
3493 | } | |
3494 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3495 | /* noa_attr not found and we had valid noa_attr before */ | |
3496 | sdata->u.mgd.p2p_noa_index = -1; | |
3497 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3498 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3499 | ifmgd->beacon_crc_valid = false; |
3500 | } | |
3501 | } | |
3502 | ||
0c21e632 LC |
3503 | if (ifmgd->csa_waiting_bcn) |
3504 | ieee80211_chswitch_post_beacon(sdata); | |
3505 | ||
2ecc3905 AB |
3506 | /* |
3507 | * Update beacon timing and dtim count on every beacon appearance. This | |
3508 | * will allow the driver to use the most updated values. Do it before | |
3509 | * comparing this one with last received beacon. | |
3510 | * IMPORTANT: These parameters would possibly be out of sync by the time | |
3511 | * the driver will use them. The synchronized view is currently | |
3512 | * guaranteed only in certain callbacks. | |
3513 | */ | |
30686bf7 | 3514 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
2ecc3905 AB |
3515 | sdata->vif.bss_conf.sync_tsf = |
3516 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3517 | sdata->vif.bss_conf.sync_device_ts = | |
3518 | rx_status->device_timestamp; | |
3519 | if (elems.tim) | |
3520 | sdata->vif.bss_conf.sync_dtim_count = | |
3521 | elems.tim->dtim_count; | |
3522 | else | |
3523 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3524 | } | |
3525 | ||
d8ec4433 | 3526 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3527 | return; |
30196673 | 3528 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3529 | ifmgd->beacon_crc_valid = true; |
30196673 | 3530 | |
d45c4172 | 3531 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3532 | |
d70b7616 | 3533 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2ba45384 | 3534 | rx_status->device_timestamp, |
d70b7616 JB |
3535 | &elems, true); |
3536 | ||
095d81ce JB |
3537 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3538 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3539 | elems.wmm_param_len)) |
3540 | changed |= BSS_CHANGED_QOS; | |
3541 | ||
c65dd147 EG |
3542 | /* |
3543 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3544 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3545 | */ |
989c6505 | 3546 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3547 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3548 | if (elems.tim) | |
3549 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3550 | else | |
3551 | bss_conf->dtim_period = 1; | |
ef429dad | 3552 | |
989c6505 AB |
3553 | changed |= BSS_CHANGED_BEACON_INFO; |
3554 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3555 | |
3556 | mutex_lock(&local->iflist_mtx); | |
3557 | ieee80211_recalc_ps(local, -1); | |
3558 | mutex_unlock(&local->iflist_mtx); | |
3559 | ||
ce857888 | 3560 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3561 | } |
3562 | ||
1946bed9 | 3563 | if (elems.erp_info) { |
7a5158ef JB |
3564 | erp_valid = true; |
3565 | erp_value = elems.erp_info[0]; | |
3566 | } else { | |
3567 | erp_valid = false; | |
50c4afb9 | 3568 | } |
7a5158ef JB |
3569 | changed |= ieee80211_handle_bss_capability(sdata, |
3570 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3571 | erp_valid, erp_value); | |
f0706e82 | 3572 | |
1128958d | 3573 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3574 | sta = sta_info_get(sdata, bssid); |
3575 | ||
53b954ee EP |
3576 | if (ieee80211_config_bw(sdata, sta, |
3577 | elems.ht_cap_elem, elems.ht_operation, | |
30eb1dc2 JB |
3578 | elems.vht_operation, bssid, &changed)) { |
3579 | mutex_unlock(&local->sta_mtx); | |
3580 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3581 | WLAN_REASON_DEAUTH_LEAVING, | |
3582 | true, deauth_buf); | |
a90faa9d EG |
3583 | ieee80211_report_disconnect(sdata, deauth_buf, |
3584 | sizeof(deauth_buf), true, | |
3585 | WLAN_REASON_DEAUTH_LEAVING); | |
8d61ffa5 | 3586 | return; |
30eb1dc2 | 3587 | } |
bee7f586 JB |
3588 | |
3589 | if (sta && elems.opmode_notif) | |
3590 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3591 | rx_status->band, true); | |
1128958d | 3592 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3593 | |
24a4e400 SG |
3594 | changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt, |
3595 | elems.country_elem, | |
3596 | elems.country_elem_len, | |
c8d65917 SG |
3597 | elems.pwr_constr_elem, |
3598 | elems.cisco_dtpc_elem); | |
3f2355cb | 3599 | |
471b3efd | 3600 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3601 | } |
3602 | ||
1fa57d01 JB |
3603 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3604 | struct sk_buff *skb) | |
f0706e82 JB |
3605 | { |
3606 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3607 | struct ieee80211_mgmt *mgmt; |
3608 | u16 fc; | |
1b3a2e49 JB |
3609 | struct ieee802_11_elems elems; |
3610 | int ies_len; | |
f0706e82 | 3611 | |
f0706e82 JB |
3612 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3613 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3614 | fc = le16_to_cpu(mgmt->frame_control); | |
3615 | ||
8d61ffa5 | 3616 | sdata_lock(sdata); |
77fdaa12 | 3617 | |
66e67e41 JB |
3618 | switch (fc & IEEE80211_FCTL_STYPE) { |
3619 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3620 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3621 | break; |
3622 | case IEEE80211_STYPE_PROBE_RESP: | |
3623 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3624 | break; | |
3625 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3626 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3627 | break; |
3628 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3629 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3630 | break; |
3631 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3632 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3633 | break; |
3634 | case IEEE80211_STYPE_ASSOC_RESP: | |
3635 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3636 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3637 | break; |
3638 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3639 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3640 | ies_len = skb->len - |
3641 | offsetof(struct ieee80211_mgmt, | |
3642 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3643 | |
3644 | if (ies_len < 0) | |
3645 | break; | |
3646 | ||
3647 | ieee802_11_parse_elems( | |
3648 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3649 | ies_len, true, &elems); |
37799e52 JB |
3650 | |
3651 | if (elems.parse_error) | |
3652 | break; | |
3653 | ||
1b3a2e49 | 3654 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3655 | rx_status->mactime, |
3656 | rx_status->device_timestamp, | |
3657 | &elems, false); | |
1b3a2e49 JB |
3658 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3659 | ies_len = skb->len - | |
3660 | offsetof(struct ieee80211_mgmt, | |
3661 | u.action.u.ext_chan_switch.variable); | |
3662 | ||
3663 | if (ies_len < 0) | |
3664 | break; | |
3665 | ||
3666 | ieee802_11_parse_elems( | |
3667 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3668 | ies_len, true, &elems); |
1b3a2e49 JB |
3669 | |
3670 | if (elems.parse_error) | |
3671 | break; | |
3672 | ||
3673 | /* for the handling code pretend this was also an IE */ | |
3674 | elems.ext_chansw_ie = | |
3675 | &mgmt->u.action.u.ext_chan_switch.data; | |
3676 | ||
66e67e41 | 3677 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3678 | rx_status->mactime, |
3679 | rx_status->device_timestamp, | |
3680 | &elems, false); | |
77fdaa12 | 3681 | } |
37799e52 | 3682 | break; |
77fdaa12 | 3683 | } |
8d61ffa5 | 3684 | sdata_unlock(sdata); |
f0706e82 JB |
3685 | } |
3686 | ||
9c6bd790 | 3687 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3688 | { |
60f8b39c JB |
3689 | struct ieee80211_sub_if_data *sdata = |
3690 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3691 | |
9b7d72c1 | 3692 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3693 | } |
3694 | ||
04ac3c0e | 3695 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3696 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3697 | { |
6ae16775 | 3698 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3699 | |
37ad3888 | 3700 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3701 | tx, frame_buf); |
37ad3888 | 3702 | |
a90faa9d EG |
3703 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
3704 | reason); | |
04ac3c0e FF |
3705 | } |
3706 | ||
66e67e41 JB |
3707 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3708 | { | |
3709 | struct ieee80211_local *local = sdata->local; | |
3710 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3711 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3712 | u32 tx_flags = 0; |
66e67e41 | 3713 | |
8d61ffa5 | 3714 | sdata_assert_lock(sdata); |
66e67e41 JB |
3715 | |
3716 | if (WARN_ON_ONCE(!auth_data)) | |
3717 | return -EINVAL; | |
3718 | ||
66e67e41 JB |
3719 | auth_data->tries++; |
3720 | ||
3721 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3722 | sdata_info(sdata, "authentication with %pM timed out\n", |
3723 | auth_data->bss->bssid); | |
66e67e41 JB |
3724 | |
3725 | /* | |
3726 | * Most likely AP is not in the range so remove the | |
3727 | * bss struct for that AP. | |
3728 | */ | |
3729 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3730 | ||
3731 | return -ETIMEDOUT; | |
3732 | } | |
3733 | ||
a1845fc7 JB |
3734 | drv_mgd_prepare_tx(local, sdata); |
3735 | ||
66e67e41 | 3736 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3737 | u16 trans = 1; |
3738 | u16 status = 0; | |
3739 | ||
bdcbd8e0 JB |
3740 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3741 | auth_data->bss->bssid, auth_data->tries, | |
3742 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3743 | |
3744 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3745 | |
3746 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3747 | trans = auth_data->sae_trans; | |
3748 | status = auth_data->sae_status; | |
3749 | auth_data->expected_transaction = trans; | |
3750 | } | |
3751 | ||
30686bf7 | 3752 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
6211dd12 SG |
3753 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |
3754 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3755 | ||
6b8ece3a JM |
3756 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3757 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3758 | auth_data->bss->bssid, |
1672c0e3 JB |
3759 | auth_data->bss->bssid, NULL, 0, 0, |
3760 | tx_flags); | |
66e67e41 JB |
3761 | } else { |
3762 | const u8 *ssidie; | |
3763 | ||
bdcbd8e0 JB |
3764 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3765 | auth_data->bss->bssid, auth_data->tries, | |
3766 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3767 | |
9caf0364 | 3768 | rcu_read_lock(); |
66e67e41 | 3769 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3770 | if (!ssidie) { |
3771 | rcu_read_unlock(); | |
66e67e41 | 3772 | return -EINVAL; |
9caf0364 | 3773 | } |
66e67e41 JB |
3774 | /* |
3775 | * Direct probe is sent to broadcast address as some APs | |
3776 | * will not answer to direct packet in unassociated state. | |
3777 | */ | |
a344d677 JB |
3778 | ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL, |
3779 | ssidie + 2, ssidie[1], | |
6211dd12 | 3780 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3781 | auth_data->bss->channel, false); |
9caf0364 | 3782 | rcu_read_unlock(); |
66e67e41 JB |
3783 | } |
3784 | ||
6211dd12 | 3785 | if (tx_flags == 0) { |
1672c0e3 | 3786 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3787 | auth_data->timeout_started = true; |
8d61ffa5 | 3788 | run_again(sdata, auth_data->timeout); |
89afe614 | 3789 | } else { |
cb236d2d JB |
3790 | auth_data->timeout = |
3791 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3792 | auth_data->timeout_started = true; | |
3793 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3794 | } |
66e67e41 JB |
3795 | |
3796 | return 0; | |
3797 | } | |
3798 | ||
3799 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3800 | { | |
3801 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3802 | struct ieee80211_local *local = sdata->local; | |
3803 | ||
8d61ffa5 | 3804 | sdata_assert_lock(sdata); |
66e67e41 | 3805 | |
66e67e41 JB |
3806 | assoc_data->tries++; |
3807 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3808 | sdata_info(sdata, "association with %pM timed out\n", |
3809 | assoc_data->bss->bssid); | |
66e67e41 JB |
3810 | |
3811 | /* | |
3812 | * Most likely AP is not in the range so remove the | |
3813 | * bss struct for that AP. | |
3814 | */ | |
3815 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3816 | ||
3817 | return -ETIMEDOUT; | |
3818 | } | |
3819 | ||
bdcbd8e0 JB |
3820 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3821 | assoc_data->bss->bssid, assoc_data->tries, | |
3822 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3823 | ieee80211_send_assoc(sdata); |
3824 | ||
30686bf7 | 3825 | if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
1672c0e3 | 3826 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; |
89afe614 | 3827 | assoc_data->timeout_started = true; |
8d61ffa5 | 3828 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3829 | } else { |
cb236d2d JB |
3830 | assoc_data->timeout = |
3831 | round_jiffies_up(jiffies + | |
3832 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3833 | assoc_data->timeout_started = true; | |
3834 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3835 | } |
66e67e41 JB |
3836 | |
3837 | return 0; | |
3838 | } | |
3839 | ||
1672c0e3 JB |
3840 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3841 | __le16 fc, bool acked) | |
3842 | { | |
3843 | struct ieee80211_local *local = sdata->local; | |
3844 | ||
3845 | sdata->u.mgd.status_fc = fc; | |
3846 | sdata->u.mgd.status_acked = acked; | |
3847 | sdata->u.mgd.status_received = true; | |
3848 | ||
3849 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3850 | } | |
3851 | ||
1fa57d01 | 3852 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3853 | { |
9c6bd790 | 3854 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3855 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3856 | |
8d61ffa5 | 3857 | sdata_lock(sdata); |
77fdaa12 | 3858 | |
1672c0e3 JB |
3859 | if (ifmgd->status_received) { |
3860 | __le16 fc = ifmgd->status_fc; | |
3861 | bool status_acked = ifmgd->status_acked; | |
3862 | ||
3863 | ifmgd->status_received = false; | |
3864 | if (ifmgd->auth_data && | |
3865 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3866 | if (status_acked) { | |
3867 | ifmgd->auth_data->timeout = | |
3868 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3869 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3870 | } else { |
3871 | ifmgd->auth_data->timeout = jiffies - 1; | |
3872 | } | |
89afe614 | 3873 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3874 | } else if (ifmgd->assoc_data && |
3875 | (ieee80211_is_assoc_req(fc) || | |
3876 | ieee80211_is_reassoc_req(fc))) { | |
3877 | if (status_acked) { | |
3878 | ifmgd->assoc_data->timeout = | |
3879 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3880 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3881 | } else { |
3882 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3883 | } | |
89afe614 | 3884 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3885 | } |
3886 | } | |
3887 | ||
89afe614 | 3888 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3889 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3890 | if (ifmgd->auth_data->done) { | |
3891 | /* | |
3892 | * ok ... we waited for assoc but userspace didn't, | |
3893 | * so let's just kill the auth data | |
3894 | */ | |
3895 | ieee80211_destroy_auth_data(sdata, false); | |
3896 | } else if (ieee80211_probe_auth(sdata)) { | |
3897 | u8 bssid[ETH_ALEN]; | |
a9409093 EG |
3898 | struct ieee80211_event event = { |
3899 | .type = MLME_EVENT, | |
3900 | .u.mlme.data = AUTH_EVENT, | |
3901 | .u.mlme.status = MLME_TIMEOUT, | |
3902 | }; | |
66e67e41 JB |
3903 | |
3904 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3905 | ||
3906 | ieee80211_destroy_auth_data(sdata, false); | |
3907 | ||
6ff57cf8 | 3908 | cfg80211_auth_timeout(sdata->dev, bssid); |
a9409093 | 3909 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3910 | } |
89afe614 | 3911 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3912 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3913 | |
89afe614 | 3914 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3915 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3916 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3917 | ieee80211_do_assoc(sdata)) { |
959867fa | 3918 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
d0d1a12f EG |
3919 | struct ieee80211_event event = { |
3920 | .type = MLME_EVENT, | |
3921 | .u.mlme.data = ASSOC_EVENT, | |
3922 | .u.mlme.status = MLME_TIMEOUT, | |
3923 | }; | |
66e67e41 JB |
3924 | |
3925 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3926 | cfg80211_assoc_timeout(sdata->dev, bss); |
d0d1a12f | 3927 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3928 | } |
89afe614 | 3929 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3930 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3931 | |
392b9ffb | 3932 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3933 | ifmgd->associated) { |
a43abf29 | 3934 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3935 | int max_tries; |
a43abf29 | 3936 | |
0c1ad2ca | 3937 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3938 | |
30686bf7 | 3939 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
180205bd | 3940 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3941 | else |
180205bd | 3942 | max_tries = max_probe_tries; |
72a8a3ed | 3943 | |
4e5ff376 FF |
3944 | /* ACK received for nullfunc probing frame */ |
3945 | if (!ifmgd->probe_send_count) | |
3946 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3947 | else if (ifmgd->nullfunc_failed) { |
3948 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3949 | mlme_dbg(sdata, |
3950 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3951 | bssid, ifmgd->probe_send_count, | |
3952 | max_tries); | |
04ac3c0e FF |
3953 | ieee80211_mgd_probe_ap_send(sdata); |
3954 | } else { | |
bdcbd8e0 JB |
3955 | mlme_dbg(sdata, |
3956 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3957 | bssid); | |
95acac61 | 3958 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3959 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3960 | false); | |
04ac3c0e FF |
3961 | } |
3962 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3963 | run_again(sdata, ifmgd->probe_timeout); |
30686bf7 | 3964 | else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
bdcbd8e0 JB |
3965 | mlme_dbg(sdata, |
3966 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3967 | bssid, probe_wait_ms); | |
95acac61 | 3968 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3969 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3970 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3971 | mlme_dbg(sdata, |
3972 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3973 | bssid, probe_wait_ms, | |
3974 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3975 | ieee80211_mgd_probe_ap_send(sdata); |
3976 | } else { | |
b291ba11 JB |
3977 | /* |
3978 | * We actually lost the connection ... or did we? | |
3979 | * Let's make sure! | |
3980 | */ | |
b38afa87 BG |
3981 | wiphy_debug(local->hw.wiphy, |
3982 | "%s: No probe response from AP %pM" | |
3983 | " after %dms, disconnecting.\n", | |
3984 | sdata->name, | |
180205bd | 3985 | bssid, probe_wait_ms); |
04ac3c0e | 3986 | |
95acac61 | 3987 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3988 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3989 | } |
3990 | } | |
3991 | ||
8d61ffa5 | 3992 | sdata_unlock(sdata); |
f0706e82 JB |
3993 | } |
3994 | ||
b291ba11 JB |
3995 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3996 | { | |
3997 | struct ieee80211_sub_if_data *sdata = | |
3998 | (struct ieee80211_sub_if_data *) data; | |
0c21e632 | 3999 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 4000 | |
0c21e632 | 4001 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
4002 | return; |
4003 | ||
682bd38b | 4004 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
4005 | ieee80211_queue_work(&sdata->local->hw, |
4006 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
4007 | } |
4008 | ||
4009 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
4010 | { | |
4011 | struct ieee80211_sub_if_data *sdata = | |
4012 | (struct ieee80211_sub_if_data *) data; | |
4013 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4014 | struct ieee80211_local *local = sdata->local; | |
4015 | ||
0c21e632 | 4016 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
4017 | return; |
4018 | ||
42935eca | 4019 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
4020 | } |
4021 | ||
4022 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
4023 | { | |
4024 | struct ieee80211_sub_if_data *sdata = | |
4025 | container_of(work, struct ieee80211_sub_if_data, | |
4026 | u.mgd.monitor_work); | |
4027 | ||
4028 | ieee80211_mgd_probe_ap(sdata, false); | |
4029 | } | |
4030 | ||
9c6bd790 JB |
4031 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
4032 | { | |
ad935687 | 4033 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 4034 | __ieee80211_stop_poll(sdata); |
ad935687 | 4035 | |
b291ba11 | 4036 | /* let's probe the connection once */ |
30686bf7 | 4037 | if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
494f1fe5 EP |
4038 | ieee80211_queue_work(&sdata->local->hw, |
4039 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 4040 | /* and do all the other regular work too */ |
64592c8f | 4041 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 4042 | } |
9c6bd790 | 4043 | } |
f0706e82 | 4044 | |
b8360ab8 | 4045 | #ifdef CONFIG_PM |
1a1cb744 JB |
4046 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
4047 | { | |
4048 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4049 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4050 | ||
4051 | sdata_lock(sdata); | |
4052 | ||
c52666ae EG |
4053 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
4054 | const u8 *bssid = ifmgd->auth_data ? | |
4055 | ifmgd->auth_data->bss->bssid : | |
4056 | ifmgd->assoc_data->bss->bssid; | |
4057 | ||
1a1cb744 | 4058 | /* |
c52666ae EG |
4059 | * If we are trying to authenticate / associate while suspending, |
4060 | * cfg80211 won't know and won't actually abort those attempts, | |
4061 | * thus we need to do that ourselves. | |
1a1cb744 | 4062 | */ |
c52666ae | 4063 | ieee80211_send_deauth_disassoc(sdata, bssid, |
1a1cb744 JB |
4064 | IEEE80211_STYPE_DEAUTH, |
4065 | WLAN_REASON_DEAUTH_LEAVING, | |
4066 | false, frame_buf); | |
c52666ae EG |
4067 | if (ifmgd->assoc_data) |
4068 | ieee80211_destroy_assoc_data(sdata, false); | |
4069 | if (ifmgd->auth_data) | |
4070 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
4071 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4072 | IEEE80211_DEAUTH_FRAME_LEN); | |
4073 | } | |
4074 | ||
be72afe0 JB |
4075 | /* This is a bit of a hack - we should find a better and more generic |
4076 | * solution to this. Normally when suspending, cfg80211 will in fact | |
4077 | * deauthenticate. However, it doesn't (and cannot) stop an ongoing | |
4078 | * auth (not so important) or assoc (this is the problem) process. | |
4079 | * | |
4080 | * As a consequence, it can happen that we are in the process of both | |
4081 | * associating and suspending, and receive an association response | |
4082 | * after cfg80211 has checked if it needs to disconnect, but before | |
4083 | * we actually set the flag to drop incoming frames. This will then | |
4084 | * cause the workqueue flush to process the association response in | |
4085 | * the suspend, resulting in a successful association just before it | |
4086 | * tries to remove the interface from the driver, which now though | |
4087 | * has a channel context assigned ... this results in issues. | |
4088 | * | |
4089 | * To work around this (for now) simply deauth here again if we're | |
4090 | * now connected. | |
4091 | */ | |
4092 | if (ifmgd->associated && !sdata->local->wowlan) { | |
4093 | u8 bssid[ETH_ALEN]; | |
4094 | struct cfg80211_deauth_request req = { | |
4095 | .reason_code = WLAN_REASON_DEAUTH_LEAVING, | |
4096 | .bssid = bssid, | |
4097 | }; | |
4098 | ||
4099 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
4100 | ieee80211_mgd_deauth(sdata, &req); | |
4101 | } | |
4102 | ||
1a1cb744 JB |
4103 | sdata_unlock(sdata); |
4104 | } | |
4105 | ||
b8360ab8 JB |
4106 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
4107 | { | |
4108 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4109 | ||
8d61ffa5 | 4110 | sdata_lock(sdata); |
b8360ab8 | 4111 | if (!ifmgd->associated) { |
8d61ffa5 | 4112 | sdata_unlock(sdata); |
b8360ab8 JB |
4113 | return; |
4114 | } | |
4115 | ||
4116 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
4117 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
4118 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
4119 | ieee80211_sta_connection_lost(sdata, | |
4120 | ifmgd->associated->bssid, | |
4121 | WLAN_REASON_UNSPECIFIED, | |
4122 | true); | |
8d61ffa5 | 4123 | sdata_unlock(sdata); |
b8360ab8 JB |
4124 | return; |
4125 | } | |
8d61ffa5 | 4126 | sdata_unlock(sdata); |
b8360ab8 JB |
4127 | } |
4128 | #endif | |
4129 | ||
9c6bd790 JB |
4130 | /* interface setup */ |
4131 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 4132 | { |
46900298 | 4133 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 4134 | |
46900298 | 4135 | ifmgd = &sdata->u.mgd; |
b291ba11 | 4136 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 4137 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
4138 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
4139 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
4140 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
4141 | ieee80211_csa_connection_drop_work); | |
687da132 | 4142 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
4143 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
4144 | ieee80211_tdls_peer_del_work); | |
46900298 | 4145 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 4146 | (unsigned long) sdata); |
b291ba11 JB |
4147 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
4148 | (unsigned long) sdata); | |
4149 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
4150 | (unsigned long) sdata); | |
46900298 | 4151 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 4152 | (unsigned long) sdata); |
02219b3a JB |
4153 | INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk, |
4154 | ieee80211_sta_handle_tspec_ac_params_wk); | |
9c6bd790 | 4155 | |
ab1faead | 4156 | ifmgd->flags = 0; |
1478acb3 | 4157 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
4158 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
4159 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 4160 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 4161 | |
0d8614b4 | 4162 | if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) |
0f78231b JB |
4163 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; |
4164 | else | |
4165 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
1277b4a9 LK |
4166 | |
4167 | /* Setup TDLS data */ | |
4168 | spin_lock_init(&ifmgd->teardown_lock); | |
4169 | ifmgd->teardown_skb = NULL; | |
4170 | ifmgd->orig_teardown_skb = NULL; | |
f0706e82 JB |
4171 | } |
4172 | ||
77fdaa12 JB |
4173 | /* scan finished notification */ |
4174 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 4175 | { |
31ee67a1 | 4176 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 4177 | |
77fdaa12 JB |
4178 | /* Restart STA timers */ |
4179 | rcu_read_lock(); | |
370bd005 BG |
4180 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
4181 | if (ieee80211_sdata_running(sdata)) | |
4182 | ieee80211_restart_sta_timer(sdata); | |
4183 | } | |
77fdaa12 JB |
4184 | rcu_read_unlock(); |
4185 | } | |
60f8b39c | 4186 | |
77fdaa12 JB |
4187 | int ieee80211_max_network_latency(struct notifier_block *nb, |
4188 | unsigned long data, void *dummy) | |
4189 | { | |
4190 | s32 latency_usec = (s32) data; | |
4191 | struct ieee80211_local *local = | |
4192 | container_of(nb, struct ieee80211_local, | |
4193 | network_latency_notifier); | |
1fa6f4af | 4194 | |
77fdaa12 JB |
4195 | mutex_lock(&local->iflist_mtx); |
4196 | ieee80211_recalc_ps(local, latency_usec); | |
4197 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 4198 | |
8bd811aa | 4199 | return NOTIFY_OK; |
9c6bd790 JB |
4200 | } |
4201 | ||
f2d9d270 JB |
4202 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
4203 | struct cfg80211_bss *cbss) | |
4204 | { | |
4205 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4206 | const u8 *ht_cap_ie, *vht_cap_ie; | |
4207 | const struct ieee80211_ht_cap *ht_cap; | |
4208 | const struct ieee80211_vht_cap *vht_cap; | |
4209 | u8 chains = 1; | |
4210 | ||
4211 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
4212 | return chains; | |
4213 | ||
9caf0364 | 4214 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
4215 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
4216 | ht_cap = (void *)(ht_cap_ie + 2); | |
4217 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
4218 | /* | |
4219 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
4220 | * "Tx Unequal Modulation Supported" fields. | |
4221 | */ | |
4222 | } | |
4223 | ||
4224 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
4225 | return chains; | |
4226 | ||
9caf0364 | 4227 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
4228 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
4229 | u8 nss; | |
4230 | u16 tx_mcs_map; | |
4231 | ||
4232 | vht_cap = (void *)(vht_cap_ie + 2); | |
4233 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
4234 | for (nss = 8; nss > 0; nss--) { | |
4235 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
4236 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
4237 | break; | |
4238 | } | |
4239 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
4240 | chains = max(chains, nss); | |
4241 | } | |
4242 | ||
4243 | return chains; | |
4244 | } | |
4245 | ||
b17166a7 JB |
4246 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
4247 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
4248 | { |
4249 | struct ieee80211_local *local = sdata->local; | |
4250 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 4251 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 4252 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 4253 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 4254 | struct ieee80211_supported_band *sband; |
4bf88530 | 4255 | struct cfg80211_chan_def chandef; |
f2d9d270 | 4256 | int ret; |
a1cf775d | 4257 | |
24398e39 JB |
4258 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4259 | ||
f2d9d270 JB |
4260 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
4261 | IEEE80211_STA_DISABLE_80P80MHZ | | |
4262 | IEEE80211_STA_DISABLE_160MHZ); | |
4263 | ||
9caf0364 JB |
4264 | rcu_read_lock(); |
4265 | ||
f2d9d270 JB |
4266 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
4267 | sband->ht_cap.ht_supported) { | |
53b954ee | 4268 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 4269 | |
9caf0364 | 4270 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
4271 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
4272 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 4273 | |
53b954ee EP |
4274 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
4275 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
4276 | ht_cap = (void *)(ht_cap_ie + 2); | |
4277 | ||
4278 | if (!ht_cap) { | |
08e6effa JB |
4279 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4280 | ht_oper = NULL; | |
4281 | } | |
24398e39 JB |
4282 | } |
4283 | ||
f2d9d270 JB |
4284 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
4285 | sband->vht_cap.vht_supported) { | |
08e6effa | 4286 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 4287 | |
9caf0364 JB |
4288 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
4289 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
4290 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
4291 | vht_oper = (void *)(vht_oper_ie + 2); | |
4292 | if (vht_oper && !ht_oper) { | |
4293 | vht_oper = NULL; | |
bdcbd8e0 | 4294 | sdata_info(sdata, |
f2d9d270 | 4295 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
4296 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4297 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 4298 | } |
08e6effa JB |
4299 | |
4300 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
4301 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
4302 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4303 | vht_oper = NULL; | |
4304 | } | |
24398e39 JB |
4305 | } |
4306 | ||
f2d9d270 JB |
4307 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
4308 | cbss->channel, | |
53b954ee | 4309 | ht_cap, ht_oper, vht_oper, |
5cdaed1e | 4310 | &chandef, false); |
04ecd257 | 4311 | |
f2d9d270 JB |
4312 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
4313 | local->rx_chains); | |
24398e39 | 4314 | |
9caf0364 JB |
4315 | rcu_read_unlock(); |
4316 | ||
04ecd257 JB |
4317 | /* will change later if needed */ |
4318 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
4319 | ||
34a3740d | 4320 | mutex_lock(&local->mtx); |
f2d9d270 JB |
4321 | /* |
4322 | * If this fails (possibly due to channel context sharing | |
4323 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
4324 | * same control channel) try to use a smaller bandwidth. | |
4325 | */ | |
4326 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
4327 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
4328 | |
4329 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
4330 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
4331 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 4332 | goto out; |
0418a445 | 4333 | |
d601cd8d | 4334 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 4335 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
4336 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
4337 | IEEE80211_CHANCTX_SHARED); | |
4338 | } | |
34a3740d JB |
4339 | out: |
4340 | mutex_unlock(&local->mtx); | |
f2d9d270 | 4341 | return ret; |
b17166a7 JB |
4342 | } |
4343 | ||
4344 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
c1041f10 CRI |
4345 | struct cfg80211_bss *cbss, bool assoc, |
4346 | bool override) | |
b17166a7 JB |
4347 | { |
4348 | struct ieee80211_local *local = sdata->local; | |
4349 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4350 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
4351 | struct sta_info *new_sta = NULL; | |
179b8fc7 | 4352 | struct ieee80211_supported_band *sband; |
c1041f10 | 4353 | bool have_sta = false; |
b17166a7 JB |
4354 | int err; |
4355 | ||
179b8fc7 CRI |
4356 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4357 | ||
b17166a7 JB |
4358 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) |
4359 | return -EINVAL; | |
4360 | ||
4361 | if (assoc) { | |
4362 | rcu_read_lock(); | |
4363 | have_sta = sta_info_get(sdata, cbss->bssid); | |
4364 | rcu_read_unlock(); | |
4365 | } | |
4366 | ||
4367 | if (!have_sta) { | |
4368 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
4369 | if (!new_sta) | |
4370 | return -ENOMEM; | |
4371 | } | |
179b8fc7 | 4372 | |
c1041f10 | 4373 | if (new_sta || override) { |
179b8fc7 CRI |
4374 | err = ieee80211_prep_channel(sdata, cbss); |
4375 | if (err) { | |
4376 | if (new_sta) | |
4377 | sta_info_free(local, new_sta); | |
4378 | return -EINVAL; | |
4379 | } | |
4380 | } | |
4381 | ||
13e0c8e3 | 4382 | if (new_sta) { |
5d6a1b06 JB |
4383 | u32 rates = 0, basic_rates = 0; |
4384 | bool have_higher_than_11mbit; | |
4385 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 4386 | struct ieee80211_chanctx_conf *chanctx_conf; |
8cef2c9d | 4387 | const struct cfg80211_bss_ies *ies; |
179b8fc7 | 4388 | int shift = ieee80211_vif_get_shift(&sdata->vif); |
2103dec1 | 4389 | u32 rate_flags; |
b17166a7 | 4390 | |
2103dec1 SW |
4391 | rcu_read_lock(); |
4392 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
4393 | if (WARN_ON(!chanctx_conf)) { | |
4394 | rcu_read_unlock(); | |
c368ddaa | 4395 | sta_info_free(local, new_sta); |
2103dec1 SW |
4396 | return -EINVAL; |
4397 | } | |
4398 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
4399 | rcu_read_unlock(); | |
5d6a1b06 | 4400 | |
5d6a1b06 JB |
4401 | ieee80211_get_rates(sband, bss->supp_rates, |
4402 | bss->supp_rates_len, | |
4403 | &rates, &basic_rates, | |
4404 | &have_higher_than_11mbit, | |
2103dec1 SW |
4405 | &min_rate, &min_rate_index, |
4406 | shift, rate_flags); | |
5d6a1b06 JB |
4407 | |
4408 | /* | |
4409 | * This used to be a workaround for basic rates missing | |
4410 | * in the association response frame. Now that we no | |
4411 | * longer use the basic rates from there, it probably | |
4412 | * doesn't happen any more, but keep the workaround so | |
4413 | * in case some *other* APs are buggy in different ways | |
4414 | * we can connect -- with a warning. | |
4415 | */ | |
4416 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
4417 | sdata_info(sdata, |
4418 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
4419 | basic_rates = BIT(min_rate_index); |
4420 | } | |
4421 | ||
13e0c8e3 | 4422 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
4423 | sdata->vif.bss_conf.basic_rates = basic_rates; |
4424 | ||
4425 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 4426 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
4427 | have_higher_than_11mbit) |
4428 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
4429 | else | |
4430 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
4431 | ||
4432 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
4433 | ||
8c358bcd JB |
4434 | /* set timing information */ |
4435 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 4436 | rcu_read_lock(); |
ef429dad JB |
4437 | ies = rcu_dereference(cbss->beacon_ies); |
4438 | if (ies) { | |
4439 | const u8 *tim_ie; | |
4440 | ||
4441 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4442 | sdata->vif.bss_conf.sync_device_ts = | |
4443 | bss->device_ts_beacon; | |
4444 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4445 | ies->data, ies->len); | |
4446 | if (tim_ie && tim_ie[1] >= 2) | |
4447 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
4448 | else | |
4449 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
30686bf7 JB |
4450 | } else if (!ieee80211_hw_check(&sdata->local->hw, |
4451 | TIMING_BEACON_ONLY)) { | |
ef429dad JB |
4452 | ies = rcu_dereference(cbss->proberesp_ies); |
4453 | /* must be non-NULL since beacon IEs were NULL */ | |
4454 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4455 | sdata->vif.bss_conf.sync_device_ts = | |
4456 | bss->device_ts_presp; | |
4457 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4458 | } else { | |
4459 | sdata->vif.bss_conf.sync_tsf = 0; | |
4460 | sdata->vif.bss_conf.sync_device_ts = 0; | |
4461 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4462 | } | |
8cef2c9d | 4463 | rcu_read_unlock(); |
8c358bcd JB |
4464 | |
4465 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 4466 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
4467 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
4468 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
4469 | |
4470 | if (assoc) | |
13e0c8e3 | 4471 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 4472 | |
13e0c8e3 JB |
4473 | err = sta_info_insert(new_sta); |
4474 | new_sta = NULL; | |
a1cf775d | 4475 | if (err) { |
bdcbd8e0 JB |
4476 | sdata_info(sdata, |
4477 | "failed to insert STA entry for the AP (error %d)\n", | |
4478 | err); | |
a1cf775d JB |
4479 | return err; |
4480 | } | |
4481 | } else | |
b203ca39 | 4482 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d | 4483 | |
7d830a19 DS |
4484 | /* Cancel scan to ensure that nothing interferes with connection */ |
4485 | if (local->scanning) | |
4486 | ieee80211_scan_cancel(local); | |
4487 | ||
a1cf775d JB |
4488 | return 0; |
4489 | } | |
4490 | ||
77fdaa12 JB |
4491 | /* config hooks */ |
4492 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
4493 | struct cfg80211_auth_request *req) | |
9c6bd790 | 4494 | { |
66e67e41 JB |
4495 | struct ieee80211_local *local = sdata->local; |
4496 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4497 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 4498 | u16 auth_alg; |
66e67e41 JB |
4499 | int err; |
4500 | ||
4501 | /* prepare auth data structure */ | |
9c6bd790 | 4502 | |
77fdaa12 JB |
4503 | switch (req->auth_type) { |
4504 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4505 | auth_alg = WLAN_AUTH_OPEN; | |
4506 | break; | |
4507 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4508 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4509 | return -EOPNOTSUPP; |
77fdaa12 JB |
4510 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4511 | break; | |
4512 | case NL80211_AUTHTYPE_FT: | |
4513 | auth_alg = WLAN_AUTH_FT; | |
4514 | break; | |
4515 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4516 | auth_alg = WLAN_AUTH_LEAP; | |
4517 | break; | |
6b8ece3a JM |
4518 | case NL80211_AUTHTYPE_SAE: |
4519 | auth_alg = WLAN_AUTH_SAE; | |
4520 | break; | |
77fdaa12 JB |
4521 | default: |
4522 | return -EOPNOTSUPP; | |
60f8b39c | 4523 | } |
77fdaa12 | 4524 | |
6b8ece3a JM |
4525 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4526 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4527 | if (!auth_data) |
9c6bd790 | 4528 | return -ENOMEM; |
77fdaa12 | 4529 | |
66e67e41 | 4530 | auth_data->bss = req->bss; |
77fdaa12 | 4531 | |
6b8ece3a JM |
4532 | if (req->sae_data_len >= 4) { |
4533 | __le16 *pos = (__le16 *) req->sae_data; | |
4534 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4535 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4536 | memcpy(auth_data->data, req->sae_data + 4, | |
4537 | req->sae_data_len - 4); | |
4538 | auth_data->data_len += req->sae_data_len - 4; | |
4539 | } | |
4540 | ||
77fdaa12 | 4541 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4542 | memcpy(&auth_data->data[auth_data->data_len], |
4543 | req->ie, req->ie_len); | |
4544 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4545 | } |
77fdaa12 | 4546 | |
fffd0934 | 4547 | if (req->key && req->key_len) { |
66e67e41 JB |
4548 | auth_data->key_len = req->key_len; |
4549 | auth_data->key_idx = req->key_idx; | |
4550 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4551 | } |
4552 | ||
66e67e41 | 4553 | auth_data->algorithm = auth_alg; |
60f8b39c | 4554 | |
66e67e41 | 4555 | /* try to authenticate/probe */ |
2a33bee2 | 4556 | |
66e67e41 JB |
4557 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4558 | ifmgd->assoc_data) { | |
4559 | err = -EBUSY; | |
4560 | goto err_free; | |
2a33bee2 GE |
4561 | } |
4562 | ||
66e67e41 JB |
4563 | if (ifmgd->auth_data) |
4564 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4565 | |
66e67e41 JB |
4566 | /* prep auth_data so we don't go into idle on disassoc */ |
4567 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4568 | |
7b119dc0 JB |
4569 | if (ifmgd->associated) { |
4570 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4571 | ||
4572 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4573 | WLAN_REASON_UNSPECIFIED, | |
4574 | false, frame_buf); | |
4575 | ||
a90faa9d EG |
4576 | ieee80211_report_disconnect(sdata, frame_buf, |
4577 | sizeof(frame_buf), true, | |
4578 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4579 | } |
af6b6374 | 4580 | |
bdcbd8e0 | 4581 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4582 | |
c1041f10 | 4583 | err = ieee80211_prep_connection(sdata, req->bss, false, false); |
a1cf775d | 4584 | if (err) |
66e67e41 | 4585 | goto err_clear; |
af6b6374 | 4586 | |
66e67e41 JB |
4587 | err = ieee80211_probe_auth(sdata); |
4588 | if (err) { | |
66e67e41 JB |
4589 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4590 | goto err_clear; | |
4591 | } | |
4592 | ||
4593 | /* hold our own reference */ | |
5b112d3d | 4594 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4595 | return 0; |
66e67e41 JB |
4596 | |
4597 | err_clear: | |
c84a67a2 | 4598 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4599 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 | 4600 | ifmgd->auth_data = NULL; |
d01f858c MK |
4601 | mutex_lock(&sdata->local->mtx); |
4602 | ieee80211_vif_release_channel(sdata); | |
4603 | mutex_unlock(&sdata->local->mtx); | |
66e67e41 JB |
4604 | err_free: |
4605 | kfree(auth_data); | |
66e67e41 | 4606 | return err; |
af6b6374 JB |
4607 | } |
4608 | ||
095d81ce JB |
4609 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
4610 | const u8 *wmm_param, int len) | |
4611 | { | |
4612 | const u8 *pos; | |
4613 | size_t left; | |
4614 | ||
4615 | if (len < 8) | |
4616 | return false; | |
4617 | ||
4618 | if (wmm_param[5] != 1 /* version */) | |
4619 | return false; | |
4620 | ||
4621 | pos = wmm_param + 8; | |
4622 | left = len - 8; | |
4623 | ||
4624 | for (; left >= 4; left -= 4, pos += 4) { | |
4625 | u8 aifsn = pos[0] & 0x0f; | |
4626 | u8 ecwmin = pos[1] & 0x0f; | |
4627 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
4628 | int aci = (pos[0] >> 5) & 0x03; | |
4629 | ||
4630 | if (aifsn < 2) { | |
4631 | sdata_info(sdata, | |
4632 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
4633 | aifsn, aci); | |
4634 | return false; | |
4635 | } | |
4636 | if (ecwmin > ecwmax) { | |
4637 | sdata_info(sdata, | |
4638 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
4639 | ecwmin, ecwmax, aci); | |
4640 | return false; | |
4641 | } | |
4642 | } | |
4643 | ||
4644 | return true; | |
4645 | } | |
4646 | ||
77fdaa12 JB |
4647 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4648 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4649 | { |
66e67e41 | 4650 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4651 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4652 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4653 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4654 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4655 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4656 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4657 | int i, err; |
c1041f10 | 4658 | bool override = false; |
f0706e82 | 4659 | |
66e67e41 JB |
4660 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4661 | if (!assoc_data) | |
4662 | return -ENOMEM; | |
4663 | ||
9caf0364 JB |
4664 | rcu_read_lock(); |
4665 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4666 | if (!ssidie) { | |
4667 | rcu_read_unlock(); | |
4668 | kfree(assoc_data); | |
4669 | return -EINVAL; | |
4670 | } | |
4671 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4672 | assoc_data->ssid_len = ssidie[1]; | |
4673 | rcu_read_unlock(); | |
4674 | ||
7b119dc0 JB |
4675 | if (ifmgd->associated) { |
4676 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4677 | ||
4678 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4679 | WLAN_REASON_UNSPECIFIED, | |
4680 | false, frame_buf); | |
4681 | ||
a90faa9d EG |
4682 | ieee80211_report_disconnect(sdata, frame_buf, |
4683 | sizeof(frame_buf), true, | |
4684 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4685 | } |
66e67e41 JB |
4686 | |
4687 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4688 | err = -EBUSY; | |
4689 | goto err_free; | |
af6b6374 | 4690 | } |
77fdaa12 | 4691 | |
66e67e41 JB |
4692 | if (ifmgd->assoc_data) { |
4693 | err = -EBUSY; | |
4694 | goto err_free; | |
4695 | } | |
77fdaa12 | 4696 | |
66e67e41 JB |
4697 | if (ifmgd->auth_data) { |
4698 | bool match; | |
4699 | ||
4700 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4701 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4702 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4703 | } |
4704 | ||
66e67e41 | 4705 | /* prepare assoc data */ |
095d81ce | 4706 | |
d8ec4433 JO |
4707 | ifmgd->beacon_crc_valid = false; |
4708 | ||
095d81ce JB |
4709 | assoc_data->wmm = bss->wmm_used && |
4710 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4711 | if (assoc_data->wmm) { | |
4712 | /* try to check validity of WMM params IE */ | |
4713 | const struct cfg80211_bss_ies *ies; | |
4714 | const u8 *wp, *start, *end; | |
4715 | ||
4716 | rcu_read_lock(); | |
4717 | ies = rcu_dereference(req->bss->ies); | |
4718 | start = ies->data; | |
4719 | end = start + ies->len; | |
4720 | ||
4721 | while (true) { | |
4722 | wp = cfg80211_find_vendor_ie( | |
4723 | WLAN_OUI_MICROSOFT, | |
4724 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4725 | start, end - start); | |
4726 | if (!wp) | |
4727 | break; | |
4728 | start = wp + wp[1] + 2; | |
4729 | /* if this IE is too short, try the next */ | |
4730 | if (wp[1] <= 4) | |
4731 | continue; | |
4732 | /* if this IE is WMM params, we found what we wanted */ | |
4733 | if (wp[6] == 1) | |
4734 | break; | |
4735 | } | |
4736 | ||
4737 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4738 | wp[1] - 2)) { | |
4739 | assoc_data->wmm = false; | |
4740 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4741 | } | |
4742 | rcu_read_unlock(); | |
4743 | } | |
4744 | ||
de5036aa JB |
4745 | /* |
4746 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4747 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4748 | * ciphers is configured as pairwise. | |
4749 | * We can set this to true for non-11n hardware, that'll be checked | |
4750 | * separately along with the peer capabilities. | |
4751 | */ | |
1c4cb928 | 4752 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4753 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4754 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4755 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4756 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4757 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4758 | netdev_info(sdata->dev, |
d545daba | 4759 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4760 | } |
4761 | } | |
77fdaa12 | 4762 | |
4e74bfdb JB |
4763 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4764 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4765 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4766 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4767 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4768 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4769 | if (!bss->wmm_used && |
4770 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4771 | netdev_info(sdata->dev, |
4772 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4773 | } |
4e74bfdb | 4774 | |
d545daba MP |
4775 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4776 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4777 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4778 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4779 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4780 | if (!bss->wmm_used && |
4781 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4782 | netdev_info(sdata->dev, |
4783 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4784 | } |
4785 | ||
ef96a842 BG |
4786 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4787 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4788 | sizeof(ifmgd->ht_capa_mask)); | |
4789 | ||
dd5ecfea JB |
4790 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4791 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4792 | sizeof(ifmgd->vht_capa_mask)); | |
4793 | ||
77fdaa12 | 4794 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4795 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4796 | assoc_data->ie_len = req->ie_len; | |
4797 | } | |
f679f65d | 4798 | |
66e67e41 | 4799 | assoc_data->bss = req->bss; |
f679f65d | 4800 | |
af6b6374 JB |
4801 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4802 | if (ifmgd->powersave) | |
04ecd257 | 4803 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4804 | else |
04ecd257 | 4805 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4806 | } else |
04ecd257 | 4807 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4808 | |
66e67e41 | 4809 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4810 | assoc_data->supp_rates = bss->supp_rates; |
4811 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4812 | |
9caf0364 | 4813 | rcu_read_lock(); |
9dde6423 JB |
4814 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4815 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4816 | assoc_data->ap_ht_param = | |
4817 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4818 | else | |
a8243b72 | 4819 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4820 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4821 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4822 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4823 | sizeof(struct ieee80211_vht_cap)); | |
4824 | else | |
4825 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4826 | rcu_read_unlock(); |
63f170e0 | 4827 | |
848955cc | 4828 | if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && |
30686bf7 | 4829 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK), |
848955cc JB |
4830 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) |
4831 | sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; | |
4832 | ||
ab13315a | 4833 | if (bss->wmm_used && bss->uapsd_supported && |
848955cc | 4834 | (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { |
76f0303d | 4835 | assoc_data->uapsd = true; |
ab13315a KV |
4836 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4837 | } else { | |
76f0303d | 4838 | assoc_data->uapsd = false; |
ab13315a KV |
4839 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4840 | } | |
4841 | ||
77fdaa12 | 4842 | if (req->prev_bssid) |
66e67e41 | 4843 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4844 | |
4845 | if (req->use_mfp) { | |
4846 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4847 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4848 | } else { | |
4849 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4850 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4851 | } | |
4852 | ||
cd2f5dd7 AK |
4853 | if (req->flags & ASSOC_REQ_USE_RRM) |
4854 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
4855 | else | |
4856 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
4857 | ||
77fdaa12 JB |
4858 | if (req->crypto.control_port) |
4859 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4860 | else | |
4861 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4862 | ||
a621fa4d JB |
4863 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4864 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4865 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4866 | sdata->vif.type); | |
a621fa4d | 4867 | |
66e67e41 JB |
4868 | /* kick off associate process */ |
4869 | ||
4870 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4871 | ifmgd->dtim_period = 0; |
989c6505 | 4872 | ifmgd->have_beacon = false; |
66e67e41 | 4873 | |
c1041f10 CRI |
4874 | /* override HT/VHT configuration only if the AP and we support it */ |
4875 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
4876 | struct ieee80211_sta_ht_cap sta_ht_cap; | |
4877 | ||
4878 | if (req->flags & ASSOC_REQ_DISABLE_HT) | |
4879 | override = true; | |
4880 | ||
4881 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); | |
4882 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
4883 | ||
4884 | /* check for 40 MHz disable override */ | |
4885 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) && | |
4886 | sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && | |
4887 | !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) | |
4888 | override = true; | |
4889 | ||
4890 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
4891 | req->flags & ASSOC_REQ_DISABLE_VHT) | |
4892 | override = true; | |
4893 | } | |
4894 | ||
4895 | if (req->flags & ASSOC_REQ_DISABLE_HT) { | |
4896 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
4897 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4898 | } | |
4899 | ||
4900 | if (req->flags & ASSOC_REQ_DISABLE_VHT) | |
4901 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4902 | ||
4903 | err = ieee80211_prep_connection(sdata, req->bss, true, override); | |
a1cf775d JB |
4904 | if (err) |
4905 | goto err_clear; | |
66e67e41 | 4906 | |
c65dd147 EG |
4907 | rcu_read_lock(); |
4908 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4909 | |
30686bf7 | 4910 | if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) && |
c65dd147 EG |
4911 | !beacon_ies) { |
4912 | /* | |
4913 | * Wait up to one beacon interval ... | |
4914 | * should this be more if we miss one? | |
4915 | */ | |
4916 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4917 | ifmgd->bssid); | |
4918 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4919 | assoc_data->timeout_started = true; |
c65dd147 EG |
4920 | assoc_data->need_beacon = true; |
4921 | } else if (beacon_ies) { | |
4922 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4923 | beacon_ies->data, | |
4924 | beacon_ies->len); | |
ef429dad JB |
4925 | u8 dtim_count = 0; |
4926 | ||
c65dd147 EG |
4927 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4928 | const struct ieee80211_tim_ie *tim; | |
4929 | tim = (void *)(tim_ie + 2); | |
4930 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4931 | dtim_count = tim->dtim_count; |
826262c3 | 4932 | } |
989c6505 | 4933 | ifmgd->have_beacon = true; |
66e67e41 | 4934 | assoc_data->timeout = jiffies; |
89afe614 | 4935 | assoc_data->timeout_started = true; |
ef429dad | 4936 | |
30686bf7 | 4937 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
4938 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; |
4939 | sdata->vif.bss_conf.sync_device_ts = | |
4940 | bss->device_ts_beacon; | |
4941 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4942 | } | |
c65dd147 EG |
4943 | } else { |
4944 | assoc_data->timeout = jiffies; | |
89afe614 | 4945 | assoc_data->timeout_started = true; |
66e67e41 | 4946 | } |
c65dd147 EG |
4947 | rcu_read_unlock(); |
4948 | ||
8d61ffa5 | 4949 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4950 | |
fcff4f10 PS |
4951 | if (bss->corrupt_data) { |
4952 | char *corrupt_type = "data"; | |
4953 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4954 | if (bss->corrupt_data & | |
4955 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4956 | corrupt_type = "beacon and probe response"; | |
4957 | else | |
4958 | corrupt_type = "beacon"; | |
4959 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4960 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4961 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4962 | corrupt_type); | |
fcff4f10 PS |
4963 | } |
4964 | ||
8d61ffa5 | 4965 | return 0; |
66e67e41 | 4966 | err_clear: |
c84a67a2 | 4967 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4968 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 JB |
4969 | ifmgd->assoc_data = NULL; |
4970 | err_free: | |
4971 | kfree(assoc_data); | |
66e67e41 | 4972 | return err; |
f0706e82 JB |
4973 | } |
4974 | ||
77fdaa12 | 4975 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4976 | struct cfg80211_deauth_request *req) |
f0706e82 | 4977 | { |
46900298 | 4978 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4979 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4980 | bool tx = !req->local_state_change; |
f0706e82 | 4981 | |
c9c3a060 JB |
4982 | if (ifmgd->auth_data && |
4983 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4984 | sdata_info(sdata, | |
4985 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4986 | req->bssid, req->reason_code, | |
4987 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4988 | |
8c7d857c | 4989 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4990 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4991 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4992 | req->reason_code, tx, |
37ad3888 | 4993 | frame_buf); |
86552017 | 4994 | ieee80211_destroy_auth_data(sdata, false); |
a90faa9d EG |
4995 | ieee80211_report_disconnect(sdata, frame_buf, |
4996 | sizeof(frame_buf), true, | |
4997 | req->reason_code); | |
86552017 | 4998 | |
c9c3a060 | 4999 | return 0; |
8c7d857c EG |
5000 | } |
5001 | ||
86552017 JB |
5002 | if (ifmgd->associated && |
5003 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
5004 | sdata_info(sdata, |
5005 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
5006 | req->bssid, req->reason_code, | |
5007 | ieee80211_get_reason_code_string(req->reason_code)); | |
5008 | ||
86552017 JB |
5009 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
5010 | req->reason_code, tx, frame_buf); | |
a90faa9d EG |
5011 | ieee80211_report_disconnect(sdata, frame_buf, |
5012 | sizeof(frame_buf), true, | |
5013 | req->reason_code); | |
c9c3a060 JB |
5014 | return 0; |
5015 | } | |
86552017 | 5016 | |
c9c3a060 | 5017 | return -ENOTCONN; |
f0706e82 | 5018 | } |
84363e6e | 5019 | |
77fdaa12 | 5020 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 5021 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 5022 | { |
77fdaa12 | 5023 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 5024 | u8 bssid[ETH_ALEN]; |
6ae16775 | 5025 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 5026 | |
8d8b261a JB |
5027 | /* |
5028 | * cfg80211 should catch this ... but it's racy since | |
5029 | * we can receive a disassoc frame, process it, hand it | |
5030 | * to cfg80211 while that's in a locked section already | |
5031 | * trying to tell us that the user wants to disconnect. | |
5032 | */ | |
8d61ffa5 | 5033 | if (ifmgd->associated != req->bss) |
77fdaa12 | 5034 | return -ENOLINK; |
77fdaa12 | 5035 | |
bdcbd8e0 | 5036 | sdata_info(sdata, |
dfa1ad29 CO |
5037 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
5038 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 5039 | |
e69e95db | 5040 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
5041 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
5042 | req->reason_code, !req->local_state_change, | |
5043 | frame_buf); | |
10f644a4 | 5044 | |
a90faa9d EG |
5045 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
5046 | req->reason_code); | |
bc83b681 | 5047 | |
10f644a4 JB |
5048 | return 0; |
5049 | } | |
026331c4 | 5050 | |
afa762f6 | 5051 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
5052 | { |
5053 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5054 | ||
49921859 BG |
5055 | /* |
5056 | * Make sure some work items will not run after this, | |
5057 | * they will not do anything but might not have been | |
5058 | * cancelled when disconnecting. | |
5059 | */ | |
5060 | cancel_work_sync(&ifmgd->monitor_work); | |
5061 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
5062 | cancel_work_sync(&ifmgd->request_smps_work); | |
5063 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
5064 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 5065 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 5066 | |
8d61ffa5 | 5067 | sdata_lock(sdata); |
959867fa JB |
5068 | if (ifmgd->assoc_data) { |
5069 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 5070 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
5071 | cfg80211_assoc_timeout(sdata->dev, bss); |
5072 | } | |
54e4ffb2 JB |
5073 | if (ifmgd->auth_data) |
5074 | ieee80211_destroy_auth_data(sdata, false); | |
1277b4a9 LK |
5075 | spin_lock_bh(&ifmgd->teardown_lock); |
5076 | if (ifmgd->teardown_skb) { | |
5077 | kfree_skb(ifmgd->teardown_skb); | |
5078 | ifmgd->teardown_skb = NULL; | |
5079 | ifmgd->orig_teardown_skb = NULL; | |
5080 | } | |
5081 | spin_unlock_bh(&ifmgd->teardown_lock); | |
54e4ffb2 | 5082 | del_timer_sync(&ifmgd->timer); |
8d61ffa5 | 5083 | sdata_unlock(sdata); |
54e4ffb2 JB |
5084 | } |
5085 | ||
a97c13c3 JO |
5086 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
5087 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
5088 | gfp_t gfp) | |
5089 | { | |
5090 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5091 | ||
b5878a2d JB |
5092 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
5093 | ||
a97c13c3 JO |
5094 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
5095 | } | |
5096 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); | |
98f03342 JB |
5097 | |
5098 | void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) | |
5099 | { | |
5100 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5101 | ||
5102 | trace_api_cqm_beacon_loss_notify(sdata->local, sdata); | |
5103 | ||
5104 | cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); | |
5105 | } | |
5106 | EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); |