]>
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 | ||
7eeff74c JB |
121 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
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 | ||
be099e82 LR |
137 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
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 JB |
159 | struct cfg80211_chan_def vht_chandef; |
160 | u32 ht_cfreq, ret; | |
161 | ||
162 | chandef->chan = channel; | |
163 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
164 | chandef->center_freq1 = channel->center_freq; | |
165 | chandef->center_freq2 = 0; | |
166 | ||
53b954ee | 167 | if (!ht_cap || !ht_oper || !sband->ht_cap.ht_supported) { |
6565ec9b JB |
168 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
169 | goto out; | |
170 | } | |
171 | ||
172 | chandef->width = NL80211_CHAN_WIDTH_20; | |
173 | ||
53b954ee EP |
174 | if (!(ht_cap->cap_info & |
175 | cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { | |
176 | ret = IEEE80211_STA_DISABLE_40MHZ | IEEE80211_STA_DISABLE_VHT; | |
177 | goto out; | |
178 | } | |
179 | ||
6565ec9b JB |
180 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, |
181 | channel->band); | |
182 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 183 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
184 | /* |
185 | * It's possible that some APs are confused here; | |
186 | * Netgear WNDR3700 sometimes reports 4 higher than | |
187 | * the actual channel in association responses, but | |
188 | * since we look at probe response/beacon data here | |
189 | * it should be OK. | |
190 | */ | |
5cdaed1e JB |
191 | sdata_info(sdata, |
192 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
193 | channel->center_freq, ht_cfreq, | |
194 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
195 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
196 | goto out; | |
197 | } | |
198 | ||
199 | /* check 40 MHz support, if we have it */ | |
200 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
201 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
202 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
203 | chandef->width = NL80211_CHAN_WIDTH_40; | |
204 | chandef->center_freq1 += 10; | |
205 | break; | |
206 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
207 | chandef->width = NL80211_CHAN_WIDTH_40; | |
208 | chandef->center_freq1 -= 10; | |
209 | break; | |
210 | } | |
211 | } else { | |
212 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
213 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
214 | /* also mark 40 MHz disabled */ |
215 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
216 | goto out; |
217 | } | |
218 | ||
219 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
220 | ret = IEEE80211_STA_DISABLE_VHT; | |
221 | goto out; | |
222 | } | |
223 | ||
224 | vht_chandef.chan = channel; | |
225 | vht_chandef.center_freq1 = | |
226 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
227 | channel->band); | |
228 | vht_chandef.center_freq2 = 0; | |
229 | ||
6565ec9b JB |
230 | switch (vht_oper->chan_width) { |
231 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
232 | vht_chandef.width = chandef->width; | |
cb664981 | 233 | vht_chandef.center_freq1 = chandef->center_freq1; |
6565ec9b JB |
234 | break; |
235 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
236 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
237 | break; | |
238 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
239 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
240 | break; | |
241 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
242 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
243 | vht_chandef.center_freq2 = |
244 | ieee80211_channel_to_frequency( | |
245 | vht_oper->center_freq_seg2_idx, | |
246 | channel->band); | |
6565ec9b JB |
247 | break; |
248 | default: | |
5cdaed1e | 249 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
250 | sdata_info(sdata, |
251 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
252 | vht_oper->chan_width); | |
6565ec9b JB |
253 | ret = IEEE80211_STA_DISABLE_VHT; |
254 | goto out; | |
255 | } | |
256 | ||
257 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 258 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
259 | sdata_info(sdata, |
260 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
261 | ret = IEEE80211_STA_DISABLE_VHT; |
262 | goto out; | |
263 | } | |
264 | ||
265 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
266 | ret = 0; | |
267 | goto out; | |
268 | } | |
269 | ||
270 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 271 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
272 | sdata_info(sdata, |
273 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
274 | ret = IEEE80211_STA_DISABLE_VHT; |
275 | goto out; | |
276 | } | |
277 | ||
278 | *chandef = vht_chandef; | |
279 | ||
280 | ret = 0; | |
281 | ||
282 | out: | |
963a1852 JB |
283 | /* |
284 | * When tracking the current AP, don't do any further checks if the | |
285 | * new chandef is identical to the one we're currently using for the | |
286 | * connection. This keeps us from playing ping-pong with regulatory, | |
287 | * without it the following can happen (for example): | |
288 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
289 | * - AP advertises regdom US | |
290 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
291 | * - the code below detects an unsupported channel, downgrades, and | |
292 | * we disconnect from the AP in the caller | |
293 | * - disconnect causes CRDA to reload world regdomain and the game | |
294 | * starts anew. | |
295 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
296 | * | |
297 | * It seems possible that there are still scenarios with CSA or real | |
298 | * bandwidth changes where a this could happen, but those cases are | |
299 | * less common and wouldn't completely prevent using the AP. | |
300 | */ | |
301 | if (tracking && | |
302 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
303 | return ret; | |
304 | ||
586e01ed JB |
305 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
306 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
307 | vht_chandef = *chandef; | |
308 | ||
ddfe49b4 JB |
309 | /* |
310 | * Ignore the DISABLED flag when we're already connected and only | |
311 | * tracking the APs beacon for bandwidth changes - otherwise we | |
312 | * might get disconnected here if we connect to an AP, update our | |
313 | * regulatory information based on the AP's country IE and the | |
314 | * information we have is wrong/outdated and disables the channel | |
315 | * that we're actually using for the connection to the AP. | |
316 | */ | |
6565ec9b | 317 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
318 | tracking ? 0 : |
319 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
320 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
321 | ret = IEEE80211_STA_DISABLE_HT | | |
322 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 323 | break; |
6565ec9b JB |
324 | } |
325 | ||
e6b7cde4 | 326 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
327 | } |
328 | ||
5cdaed1e | 329 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
330 | sdata_info(sdata, |
331 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
332 | ||
333 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
334 | return ret; | |
335 | } | |
336 | ||
30eb1dc2 JB |
337 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
338 | struct sta_info *sta, | |
53b954ee | 339 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
340 | const struct ieee80211_ht_operation *ht_oper, |
341 | const struct ieee80211_vht_operation *vht_oper, | |
342 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
343 | { |
344 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 345 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 346 | struct ieee80211_supported_band *sband; |
55de908a | 347 | struct ieee80211_channel *chan; |
30eb1dc2 | 348 | struct cfg80211_chan_def chandef; |
9ed6bcce | 349 | u16 ht_opmode; |
30eb1dc2 JB |
350 | u32 flags; |
351 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
352 | int ret; | |
d5522e03 | 353 | |
30eb1dc2 JB |
354 | /* if HT was/is disabled, don't track any bandwidth changes */ |
355 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
356 | return 0; |
357 | ||
30eb1dc2 JB |
358 | /* don't check VHT if we associated as non-VHT station */ |
359 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
360 | vht_oper = NULL; | |
361 | ||
362 | if (WARN_ON_ONCE(!sta)) | |
363 | return -EINVAL; | |
364 | ||
017b45bb AA |
365 | /* |
366 | * if bss configuration changed store the new one - | |
367 | * this may be applicable even if channel is identical | |
368 | */ | |
369 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
370 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
371 | *changed |= BSS_CHANGED_HT; | |
372 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
373 | } | |
374 | ||
f2d9330e | 375 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 376 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 377 | |
30eb1dc2 | 378 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
53b954ee EP |
379 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
380 | ht_cap, ht_oper, vht_oper, | |
381 | &chandef, true); | |
30eb1dc2 JB |
382 | |
383 | /* | |
384 | * Downgrade the new channel if we associated with restricted | |
385 | * capabilities. For example, if we associated as a 20 MHz STA | |
386 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
387 | * reasons) then switching to a 40 MHz channel now won't do us | |
388 | * any good -- we couldn't use it with the AP. | |
389 | */ | |
390 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
391 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 392 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
393 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
394 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 395 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
396 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
397 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 398 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
399 | |
400 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
401 | return 0; | |
402 | ||
403 | sdata_info(sdata, | |
404 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
405 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
406 | chandef.center_freq1, chandef.center_freq2); | |
407 | ||
408 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
409 | IEEE80211_STA_DISABLE_VHT | | |
410 | IEEE80211_STA_DISABLE_40MHZ | | |
411 | IEEE80211_STA_DISABLE_80P80MHZ | | |
412 | IEEE80211_STA_DISABLE_160MHZ)) || | |
413 | !cfg80211_chandef_valid(&chandef)) { | |
414 | sdata_info(sdata, | |
415 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
416 | ifmgd->bssid); | |
417 | return -EINVAL; | |
418 | } | |
419 | ||
420 | switch (chandef.width) { | |
421 | case NL80211_CHAN_WIDTH_20_NOHT: | |
422 | case NL80211_CHAN_WIDTH_20: | |
423 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
424 | break; | |
4bf88530 | 425 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 426 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 427 | break; |
30eb1dc2 JB |
428 | case NL80211_CHAN_WIDTH_80: |
429 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
430 | break; | |
431 | case NL80211_CHAN_WIDTH_80P80: | |
432 | case NL80211_CHAN_WIDTH_160: | |
433 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 434 | break; |
30eb1dc2 JB |
435 | default: |
436 | return -EINVAL; | |
64f68e5d | 437 | } |
d5522e03 | 438 | |
30eb1dc2 JB |
439 | if (new_sta_bw > sta->cur_max_bandwidth) |
440 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 441 | |
30eb1dc2 JB |
442 | if (new_sta_bw < sta->sta.bandwidth) { |
443 | sta->sta.bandwidth = new_sta_bw; | |
444 | rate_control_rate_update(local, sband, sta, | |
445 | IEEE80211_RC_BW_CHANGED); | |
446 | } | |
64f68e5d | 447 | |
30eb1dc2 JB |
448 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
449 | if (ret) { | |
450 | sdata_info(sdata, | |
451 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
452 | ifmgd->bssid); | |
453 | return ret; | |
454 | } | |
7cc44ed4 | 455 | |
30eb1dc2 JB |
456 | if (new_sta_bw > sta->sta.bandwidth) { |
457 | sta->sta.bandwidth = new_sta_bw; | |
458 | rate_control_rate_update(local, sband, sta, | |
459 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 460 | } |
d5522e03 | 461 | |
30eb1dc2 | 462 | return 0; |
d5522e03 JB |
463 | } |
464 | ||
9c6bd790 JB |
465 | /* frame sending functions */ |
466 | ||
66e67e41 | 467 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 468 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
469 | struct ieee80211_supported_band *sband, |
470 | struct ieee80211_channel *channel, | |
471 | enum ieee80211_smps_mode smps) | |
472 | { | |
66e67e41 JB |
473 | u8 *pos; |
474 | u32 flags = channel->flags; | |
475 | u16 cap; | |
476 | struct ieee80211_sta_ht_cap ht_cap; | |
477 | ||
478 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
479 | ||
66e67e41 JB |
480 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
481 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
482 | ||
66e67e41 JB |
483 | /* determine capability flags */ |
484 | cap = ht_cap.cap; | |
485 | ||
9dde6423 | 486 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
487 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
488 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
489 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
490 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
491 | } | |
492 | break; | |
493 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
494 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
495 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
496 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
497 | } | |
498 | break; | |
499 | } | |
500 | ||
24398e39 JB |
501 | /* |
502 | * If 40 MHz was disabled associate as though we weren't | |
503 | * capable of 40 MHz -- some broken APs will never fall | |
504 | * back to trying to transmit in 20 MHz. | |
505 | */ | |
506 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
507 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
508 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
509 | } | |
510 | ||
66e67e41 JB |
511 | /* set SM PS mode properly */ |
512 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
513 | switch (smps) { | |
514 | case IEEE80211_SMPS_AUTOMATIC: | |
515 | case IEEE80211_SMPS_NUM_MODES: | |
516 | WARN_ON(1); | |
517 | case IEEE80211_SMPS_OFF: | |
518 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
519 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
520 | break; | |
521 | case IEEE80211_SMPS_STATIC: | |
522 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
523 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
524 | break; | |
525 | case IEEE80211_SMPS_DYNAMIC: | |
526 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
527 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
528 | break; | |
529 | } | |
530 | ||
531 | /* reserve and fill IE */ | |
532 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
533 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
534 | } | |
535 | ||
d545daba MP |
536 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
537 | struct sk_buff *skb, | |
b08fbbd8 JB |
538 | struct ieee80211_supported_band *sband, |
539 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
540 | { |
541 | u8 *pos; | |
542 | u32 cap; | |
543 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 544 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
545 | |
546 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
547 | ||
548 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 549 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
550 | |
551 | /* determine capability flags */ | |
552 | cap = vht_cap.cap; | |
553 | ||
f2d9d270 JB |
554 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
555 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
556 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
557 | } | |
558 | ||
559 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
560 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
561 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
562 | } | |
563 | ||
b08fbbd8 JB |
564 | /* |
565 | * Some APs apparently get confused if our capabilities are better | |
566 | * than theirs, so restrict what we advertise in the assoc request. | |
567 | */ | |
568 | if (!(ap_vht_cap->vht_cap_info & | |
569 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
570 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
571 | ||
c1cf6d4e ES |
572 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
573 | ||
574 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
575 | our_bf_sts = cap & mask; | |
576 | ||
577 | if (ap_bf_sts < our_bf_sts) { | |
578 | cap &= ~mask; | |
579 | cap |= ap_bf_sts; | |
580 | } | |
581 | ||
d545daba | 582 | /* reserve and fill IE */ |
d4950281 | 583 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
584 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
585 | } | |
586 | ||
66e67e41 JB |
587 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
588 | { | |
589 | struct ieee80211_local *local = sdata->local; | |
590 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
591 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
592 | struct sk_buff *skb; | |
593 | struct ieee80211_mgmt *mgmt; | |
594 | u8 *pos, qos_info; | |
595 | size_t offset = 0, noffset; | |
2103dec1 | 596 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
597 | u16 capab; |
598 | struct ieee80211_supported_band *sband; | |
55de908a JB |
599 | struct ieee80211_chanctx_conf *chanctx_conf; |
600 | struct ieee80211_channel *chan; | |
2103dec1 | 601 | u32 rate_flags, rates = 0; |
66e67e41 | 602 | |
8d61ffa5 | 603 | sdata_assert_lock(sdata); |
66e67e41 | 604 | |
55de908a JB |
605 | rcu_read_lock(); |
606 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
607 | if (WARN_ON(!chanctx_conf)) { | |
608 | rcu_read_unlock(); | |
609 | return; | |
610 | } | |
4bf88530 | 611 | chan = chanctx_conf->def.chan; |
2103dec1 | 612 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
613 | rcu_read_unlock(); |
614 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 615 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
616 | |
617 | if (assoc_data->supp_rates_len) { | |
618 | /* | |
619 | * Get all rates supported by the device and the AP as | |
620 | * some APs don't like getting a superset of their rates | |
621 | * in the association request (e.g. D-Link DAP 1353 in | |
622 | * b-only mode)... | |
623 | */ | |
2103dec1 SW |
624 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
625 | assoc_data->supp_rates, | |
626 | assoc_data->supp_rates_len, | |
627 | &rates); | |
66e67e41 JB |
628 | } else { |
629 | /* | |
630 | * In case AP not provide any supported rates information | |
631 | * before association, we send information element(s) with | |
632 | * all rates that we support. | |
633 | */ | |
2103dec1 SW |
634 | rates_len = 0; |
635 | for (i = 0; i < sband->n_bitrates; i++) { | |
636 | if ((rate_flags & sband->bitrates[i].flags) | |
637 | != rate_flags) | |
638 | continue; | |
639 | rates |= BIT(i); | |
640 | rates_len++; | |
641 | } | |
66e67e41 JB |
642 | } |
643 | ||
644 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
645 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
646 | 2 + assoc_data->ssid_len + /* SSID */ | |
647 | 4 + rates_len + /* (extended) rates */ | |
648 | 4 + /* power capability */ | |
649 | 2 + 2 * sband->n_channels + /* supported channels */ | |
650 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 651 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
652 | assoc_data->ie_len + /* extra IEs */ |
653 | 9, /* WMM */ | |
654 | GFP_KERNEL); | |
655 | if (!skb) | |
656 | return; | |
657 | ||
658 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
659 | ||
660 | capab = WLAN_CAPABILITY_ESS; | |
661 | ||
662 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
663 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
664 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
665 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
666 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
667 | } | |
668 | ||
669 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
670 | capab |= WLAN_CAPABILITY_PRIVACY; | |
671 | ||
672 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
673 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
674 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
675 | ||
cd2f5dd7 AK |
676 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
677 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
678 | ||
66e67e41 JB |
679 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
680 | memset(mgmt, 0, 24); | |
681 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
682 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
683 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
684 | ||
685 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
686 | skb_put(skb, 10); | |
687 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
688 | IEEE80211_STYPE_REASSOC_REQ); | |
689 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
690 | mgmt->u.reassoc_req.listen_interval = | |
691 | cpu_to_le16(local->hw.conf.listen_interval); | |
692 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
693 | ETH_ALEN); | |
694 | } else { | |
695 | skb_put(skb, 4); | |
696 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
697 | IEEE80211_STYPE_ASSOC_REQ); | |
698 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
699 | mgmt->u.assoc_req.listen_interval = | |
700 | cpu_to_le16(local->hw.conf.listen_interval); | |
701 | } | |
702 | ||
703 | /* SSID */ | |
704 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
705 | *pos++ = WLAN_EID_SSID; | |
706 | *pos++ = assoc_data->ssid_len; | |
707 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
708 | ||
709 | /* add all rates which were marked to be used above */ | |
710 | supp_rates_len = rates_len; | |
711 | if (supp_rates_len > 8) | |
712 | supp_rates_len = 8; | |
713 | ||
714 | pos = skb_put(skb, supp_rates_len + 2); | |
715 | *pos++ = WLAN_EID_SUPP_RATES; | |
716 | *pos++ = supp_rates_len; | |
717 | ||
718 | count = 0; | |
719 | for (i = 0; i < sband->n_bitrates; i++) { | |
720 | if (BIT(i) & rates) { | |
2103dec1 SW |
721 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
722 | 5 * (1 << shift)); | |
723 | *pos++ = (u8) rate; | |
66e67e41 JB |
724 | if (++count == 8) |
725 | break; | |
726 | } | |
727 | } | |
728 | ||
729 | if (rates_len > count) { | |
730 | pos = skb_put(skb, rates_len - count + 2); | |
731 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
732 | *pos++ = rates_len - count; | |
733 | ||
734 | for (i++; i < sband->n_bitrates; i++) { | |
735 | if (BIT(i) & rates) { | |
2103dec1 SW |
736 | int rate; |
737 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
738 | 5 * (1 << shift)); | |
739 | *pos++ = (u8) rate; | |
66e67e41 JB |
740 | } |
741 | } | |
742 | } | |
743 | ||
cd2f5dd7 AK |
744 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
745 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
746 | pos = skb_put(skb, 4); |
747 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
748 | *pos++ = 2; | |
749 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
750 | /* max tx power */ |
751 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 752 | } |
66e67e41 | 753 | |
cd2f5dd7 | 754 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
66e67e41 JB |
755 | /* TODO: get this in reg domain format */ |
756 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
757 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
758 | *pos++ = 2 * sband->n_channels; | |
759 | for (i = 0; i < sband->n_channels; i++) { | |
760 | *pos++ = ieee80211_frequency_to_channel( | |
761 | sband->channels[i].center_freq); | |
762 | *pos++ = 1; /* one channel in the subband*/ | |
763 | } | |
764 | } | |
765 | ||
766 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 767 | if (assoc_data->ie_len) { |
66e67e41 JB |
768 | static const u8 before_ht[] = { |
769 | WLAN_EID_SSID, | |
770 | WLAN_EID_SUPP_RATES, | |
771 | WLAN_EID_EXT_SUPP_RATES, | |
772 | WLAN_EID_PWR_CAPABILITY, | |
773 | WLAN_EID_SUPPORTED_CHANNELS, | |
774 | WLAN_EID_RSN, | |
775 | WLAN_EID_QOS_CAPA, | |
776 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
777 | WLAN_EID_MOBILITY_DOMAIN, | |
778 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
779 | }; | |
780 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
781 | before_ht, ARRAY_SIZE(before_ht), | |
782 | offset); | |
783 | pos = skb_put(skb, noffset - offset); | |
784 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
785 | offset = noffset; | |
786 | } | |
787 | ||
f2d9d270 JB |
788 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
789 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
790 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
791 | ||
a8243b72 | 792 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 793 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 794 | sband, chan, sdata->smps_mode); |
66e67e41 | 795 | |
3de3802c JB |
796 | /* if present, add any custom IEs that go before VHT */ |
797 | if (assoc_data->ie_len) { | |
798 | static const u8 before_vht[] = { | |
799 | WLAN_EID_SSID, | |
800 | WLAN_EID_SUPP_RATES, | |
801 | WLAN_EID_EXT_SUPP_RATES, | |
802 | WLAN_EID_PWR_CAPABILITY, | |
803 | WLAN_EID_SUPPORTED_CHANNELS, | |
804 | WLAN_EID_RSN, | |
805 | WLAN_EID_QOS_CAPA, | |
806 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
807 | WLAN_EID_MOBILITY_DOMAIN, | |
808 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
809 | WLAN_EID_HT_CAPABILITY, | |
810 | WLAN_EID_BSS_COEX_2040, | |
811 | WLAN_EID_EXT_CAPABILITY, | |
812 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
813 | WLAN_EID_TIM_BCAST_REQ, | |
814 | WLAN_EID_INTERWORKING, | |
815 | }; | |
816 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
817 | before_vht, ARRAY_SIZE(before_vht), | |
818 | offset); | |
819 | pos = skb_put(skb, noffset - offset); | |
820 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
821 | offset = noffset; | |
822 | } | |
823 | ||
d545daba | 824 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
825 | ieee80211_add_vht_ie(sdata, skb, sband, |
826 | &assoc_data->ap_vht_cap); | |
d545daba | 827 | |
66e67e41 | 828 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 829 | if (assoc_data->ie_len) { |
66e67e41 JB |
830 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
831 | assoc_data->ie_len, | |
832 | offset); | |
833 | pos = skb_put(skb, noffset - offset); | |
834 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
835 | offset = noffset; | |
836 | } | |
837 | ||
76f0303d JB |
838 | if (assoc_data->wmm) { |
839 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
840 | qos_info = ifmgd->uapsd_queues; |
841 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
842 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
843 | } else { | |
844 | qos_info = 0; | |
845 | } | |
846 | ||
40b861a0 | 847 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
848 | } |
849 | ||
850 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 851 | if (assoc_data->ie_len) { |
66e67e41 JB |
852 | noffset = assoc_data->ie_len; |
853 | pos = skb_put(skb, noffset - offset); | |
854 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
855 | } | |
856 | ||
a1845fc7 JB |
857 | drv_mgd_prepare_tx(local, sdata); |
858 | ||
66e67e41 | 859 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
860 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
861 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
862 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
863 | ieee80211_tx_skb(sdata, skb); |
864 | } | |
865 | ||
572e0012 KV |
866 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
867 | struct ieee80211_sub_if_data *sdata) | |
868 | { | |
572e0012 KV |
869 | struct ieee80211_pspoll *pspoll; |
870 | struct sk_buff *skb; | |
572e0012 | 871 | |
d8cd189e KV |
872 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
873 | if (!skb) | |
572e0012 | 874 | return; |
572e0012 | 875 | |
d8cd189e KV |
876 | pspoll = (struct ieee80211_pspoll *) skb->data; |
877 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 878 | |
62ae67be JB |
879 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
880 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
881 | } |
882 | ||
965bedad JB |
883 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
884 | struct ieee80211_sub_if_data *sdata, | |
885 | int powersave) | |
886 | { | |
887 | struct sk_buff *skb; | |
d8cd189e | 888 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 889 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 890 | |
d8cd189e KV |
891 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
892 | if (!skb) | |
965bedad | 893 | return; |
965bedad | 894 | |
d8cd189e | 895 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 896 | if (powersave) |
d8cd189e | 897 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 898 | |
6c17b77b SF |
899 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
900 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 PF |
901 | |
902 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) | |
903 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
904 | ||
392b9ffb | 905 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
906 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
907 | ||
62ae67be | 908 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
909 | } |
910 | ||
d524215f FF |
911 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
912 | struct ieee80211_sub_if_data *sdata) | |
913 | { | |
914 | struct sk_buff *skb; | |
915 | struct ieee80211_hdr *nullfunc; | |
916 | __le16 fc; | |
917 | ||
918 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
919 | return; | |
920 | ||
921 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 922 | if (!skb) |
d524215f | 923 | return; |
d15b8459 | 924 | |
d524215f FF |
925 | skb_reserve(skb, local->hw.extra_tx_headroom); |
926 | ||
927 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
928 | memset(nullfunc, 0, 30); | |
929 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
930 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
931 | nullfunc->frame_control = fc; | |
932 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
933 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
934 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
935 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
936 | ||
937 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
938 | ieee80211_tx_skb(sdata, skb); | |
939 | } | |
940 | ||
cc32abd4 JB |
941 | /* spectrum management related things */ |
942 | static void ieee80211_chswitch_work(struct work_struct *work) | |
943 | { | |
944 | struct ieee80211_sub_if_data *sdata = | |
945 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 946 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 947 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 948 | int ret; |
cc32abd4 | 949 | |
9607e6b6 | 950 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
951 | return; |
952 | ||
8d61ffa5 | 953 | sdata_lock(sdata); |
4c3ebc56 MK |
954 | mutex_lock(&local->mtx); |
955 | mutex_lock(&local->chanctx_mtx); | |
956 | ||
77fdaa12 JB |
957 | if (!ifmgd->associated) |
958 | goto out; | |
cc32abd4 | 959 | |
4c3ebc56 MK |
960 | if (!sdata->vif.csa_active) |
961 | goto out; | |
962 | ||
963 | /* | |
964 | * using reservation isn't immediate as it may be deferred until later | |
965 | * with multi-vif. once reservation is complete it will re-schedule the | |
966 | * work with no reserved_chanctx so verify chandef to check if it | |
967 | * completed successfully | |
968 | */ | |
969 | ||
970 | if (sdata->reserved_chanctx) { | |
971 | /* | |
972 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
973 | * many times while waiting for other interfaces to use their | |
974 | * reservations | |
975 | */ | |
976 | if (sdata->reserved_ready) | |
977 | goto out; | |
978 | ||
979 | ret = ieee80211_vif_use_reserved_context(sdata); | |
980 | if (ret) { | |
981 | sdata_info(sdata, | |
982 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
983 | ret); | |
984 | ieee80211_queue_work(&sdata->local->hw, | |
985 | &ifmgd->csa_connection_drop_work); | |
986 | goto out; | |
987 | } | |
988 | ||
989 | goto out; | |
990 | } | |
991 | ||
992 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
993 | &sdata->csa_chandef)) { | |
7578d575 | 994 | sdata_info(sdata, |
4c3ebc56 | 995 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
996 | ieee80211_queue_work(&sdata->local->hw, |
997 | &ifmgd->csa_connection_drop_work); | |
998 | goto out; | |
999 | } | |
675a0b04 | 1000 | |
cc32abd4 | 1001 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 1002 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 1003 | |
59af6928 | 1004 | sdata->vif.csa_active = false; |
4c3ebc56 | 1005 | |
57eebdf3 | 1006 | /* XXX: wait for a beacon first? */ |
a46992b4 LC |
1007 | if (sdata->csa_block_tx) { |
1008 | ieee80211_wake_vif_queues(local, sdata, | |
1009 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1010 | sdata->csa_block_tx = false; | |
1011 | } | |
7578d575 | 1012 | |
e5593f56 MK |
1013 | ieee80211_sta_reset_beacon_monitor(sdata); |
1014 | ieee80211_sta_reset_conn_monitor(sdata); | |
1015 | ||
59af6928 | 1016 | out: |
4c3ebc56 MK |
1017 | mutex_unlock(&local->chanctx_mtx); |
1018 | mutex_unlock(&local->mtx); | |
8d61ffa5 | 1019 | sdata_unlock(sdata); |
cc32abd4 JB |
1020 | } |
1021 | ||
5ce6e438 JB |
1022 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1023 | { | |
55de908a JB |
1024 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1025 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1026 | |
1027 | trace_api_chswitch_done(sdata, success); | |
1028 | if (!success) { | |
882a7c69 JB |
1029 | sdata_info(sdata, |
1030 | "driver channel switch failed, disconnecting\n"); | |
1031 | ieee80211_queue_work(&sdata->local->hw, | |
1032 | &ifmgd->csa_connection_drop_work); | |
1033 | } else { | |
1034 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1035 | } |
5ce6e438 JB |
1036 | } |
1037 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1038 | ||
cc32abd4 JB |
1039 | static void ieee80211_chswitch_timer(unsigned long data) |
1040 | { | |
1041 | struct ieee80211_sub_if_data *sdata = | |
1042 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1043 | |
9b7d72c1 | 1044 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1045 | } |
1046 | ||
37799e52 | 1047 | static void |
4a3cb702 | 1048 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
04a161f4 JB |
1049 | u64 timestamp, struct ieee802_11_elems *elems, |
1050 | bool beacon) | |
cc32abd4 | 1051 | { |
b4f286a1 | 1052 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1053 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1054 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1055 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1056 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1057 | enum ieee80211_band current_band; |
c0f17eb9 | 1058 | struct ieee80211_csa_ie csa_ie; |
e6b7cde4 | 1059 | int res; |
cc32abd4 | 1060 | |
8d61ffa5 | 1061 | sdata_assert_lock(sdata); |
77fdaa12 | 1062 | |
37799e52 | 1063 | if (!cbss) |
cc32abd4 JB |
1064 | return; |
1065 | ||
b4f286a1 | 1066 | if (local->scanning) |
cc32abd4 JB |
1067 | return; |
1068 | ||
37799e52 | 1069 | /* disregard subsequent announcements if we are already processing */ |
3e2a0226 | 1070 | if (sdata->vif.csa_active) |
cc32abd4 JB |
1071 | return; |
1072 | ||
e6b7cde4 | 1073 | current_band = cbss->channel->band; |
c0f17eb9 | 1074 | memset(&csa_ie, 0, sizeof(csa_ie)); |
e6b7cde4 SW |
1075 | res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band, |
1076 | ifmgd->flags, | |
c0f17eb9 | 1077 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1078 | if (res < 0) |
b4f286a1 | 1079 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1080 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1081 | if (res) |
cc32abd4 | 1082 | return; |
cd64f2a9 | 1083 | |
c0f17eb9 | 1084 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1085 | IEEE80211_CHAN_DISABLED)) { |
1086 | sdata_info(sdata, | |
1087 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1088 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1089 | csa_ie.chandef.chan->center_freq, |
1090 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1091 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1092 | ieee80211_queue_work(&local->hw, |
1093 | &ifmgd->csa_connection_drop_work); | |
1094 | return; | |
1095 | } | |
1096 | ||
4c3ebc56 | 1097 | mutex_lock(&local->mtx); |
7578d575 | 1098 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1099 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1100 | lockdep_is_held(&local->chanctx_mtx)); | |
1101 | if (!conf) { | |
1102 | sdata_info(sdata, | |
1103 | "no channel context assigned to vif?, disconnecting\n"); | |
1104 | ieee80211_queue_work(&local->hw, | |
1105 | &ifmgd->csa_connection_drop_work); | |
1106 | mutex_unlock(&local->chanctx_mtx); | |
1107 | mutex_unlock(&local->mtx); | |
1108 | return; | |
1109 | } | |
1110 | ||
1111 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1112 | ||
b4f286a1 | 1113 | if (local->use_chanctx) { |
7578d575 AN |
1114 | u32 num_chanctx = 0; |
1115 | list_for_each_entry(chanctx, &local->chanctx_list, list) | |
1116 | num_chanctx++; | |
1117 | ||
1118 | if (num_chanctx > 1 || | |
1119 | !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) { | |
1120 | sdata_info(sdata, | |
1121 | "not handling chan-switch with channel contexts\n"); | |
1122 | ieee80211_queue_work(&local->hw, | |
1123 | &ifmgd->csa_connection_drop_work); | |
1124 | mutex_unlock(&local->chanctx_mtx); | |
4c3ebc56 | 1125 | mutex_unlock(&local->mtx); |
7578d575 AN |
1126 | return; |
1127 | } | |
55de908a JB |
1128 | } |
1129 | ||
4c3ebc56 MK |
1130 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1131 | chanctx->mode, false); | |
1132 | if (res) { | |
55de908a | 1133 | sdata_info(sdata, |
4c3ebc56 MK |
1134 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1135 | res); | |
b4f286a1 | 1136 | ieee80211_queue_work(&local->hw, |
55de908a | 1137 | &ifmgd->csa_connection_drop_work); |
b4f286a1 | 1138 | mutex_unlock(&local->chanctx_mtx); |
4c3ebc56 | 1139 | mutex_unlock(&local->mtx); |
55de908a JB |
1140 | return; |
1141 | } | |
b4f286a1 | 1142 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1143 | |
c46a73f3 | 1144 | sdata->vif.csa_active = true; |
4c3ebc56 | 1145 | sdata->csa_chandef = csa_ie.chandef; |
59af6928 | 1146 | sdata->csa_block_tx = csa_ie.mode; |
55de908a | 1147 | |
59af6928 | 1148 | if (sdata->csa_block_tx) |
a46992b4 LC |
1149 | ieee80211_stop_vif_queues(local, sdata, |
1150 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1151 | mutex_unlock(&local->mtx); |
57eebdf3 | 1152 | |
b4f286a1 | 1153 | if (local->ops->channel_switch) { |
5ce6e438 | 1154 | /* use driver's channel switch callback */ |
57eebdf3 JB |
1155 | struct ieee80211_channel_switch ch_switch = { |
1156 | .timestamp = timestamp, | |
c0f17eb9 CYY |
1157 | .block_tx = csa_ie.mode, |
1158 | .chandef = csa_ie.chandef, | |
1159 | .count = csa_ie.count, | |
57eebdf3 JB |
1160 | }; |
1161 | ||
b4f286a1 | 1162 | drv_channel_switch(local, &ch_switch); |
5ce6e438 JB |
1163 | return; |
1164 | } | |
1165 | ||
1166 | /* channel switch handled in software */ | |
c0f17eb9 | 1167 | if (csa_ie.count <= 1) |
b4f286a1 | 1168 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1169 | else |
cc32abd4 | 1170 | mod_timer(&ifmgd->chswitch_timer, |
c0f17eb9 | 1171 | TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval)); |
cc32abd4 JB |
1172 | } |
1173 | ||
1ea6f9c0 JB |
1174 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1175 | struct ieee80211_channel *channel, | |
1176 | const u8 *country_ie, u8 country_ie_len, | |
1177 | const u8 *pwr_constr_elem) | |
cc32abd4 | 1178 | { |
04b7b2ff JB |
1179 | struct ieee80211_country_ie_triplet *triplet; |
1180 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
1181 | int i, chan_pwr, chan_increment, new_ap_level; | |
1182 | bool have_chan_pwr = false; | |
cc32abd4 | 1183 | |
04b7b2ff JB |
1184 | /* Invalid IE */ |
1185 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 1186 | return 0; |
cc32abd4 | 1187 | |
04b7b2ff JB |
1188 | triplet = (void *)(country_ie + 3); |
1189 | country_ie_len -= 3; | |
1190 | ||
1191 | switch (channel->band) { | |
1192 | default: | |
1193 | WARN_ON_ONCE(1); | |
1194 | /* fall through */ | |
1195 | case IEEE80211_BAND_2GHZ: | |
1196 | case IEEE80211_BAND_60GHZ: | |
1197 | chan_increment = 1; | |
1198 | break; | |
1199 | case IEEE80211_BAND_5GHZ: | |
1200 | chan_increment = 4; | |
1201 | break; | |
cc32abd4 | 1202 | } |
04b7b2ff JB |
1203 | |
1204 | /* find channel */ | |
1205 | while (country_ie_len >= 3) { | |
1206 | u8 first_channel = triplet->chans.first_channel; | |
1207 | ||
1208 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1209 | goto next; | |
1210 | ||
1211 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1212 | if (first_channel + i * chan_increment == chan) { | |
1213 | have_chan_pwr = true; | |
1214 | chan_pwr = triplet->chans.max_power; | |
1215 | break; | |
1216 | } | |
1217 | } | |
1218 | if (have_chan_pwr) | |
1219 | break; | |
1220 | ||
1221 | next: | |
1222 | triplet++; | |
1223 | country_ie_len -= 3; | |
1224 | } | |
1225 | ||
1226 | if (!have_chan_pwr) | |
1ea6f9c0 | 1227 | return 0; |
04b7b2ff JB |
1228 | |
1229 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
1230 | ||
1ea6f9c0 JB |
1231 | if (sdata->ap_power_level == new_ap_level) |
1232 | return 0; | |
04b7b2ff JB |
1233 | |
1234 | sdata_info(sdata, | |
1235 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1236 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
1237 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
1238 | sdata->ap_power_level = new_ap_level; |
1239 | if (__ieee80211_recalc_txpower(sdata)) | |
1240 | return BSS_CHANGED_TXPOWER; | |
1241 | return 0; | |
cc32abd4 JB |
1242 | } |
1243 | ||
965bedad JB |
1244 | /* powersave */ |
1245 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1246 | struct ieee80211_sub_if_data *sdata) | |
1247 | { | |
1248 | struct ieee80211_conf *conf = &local->hw.conf; | |
1249 | ||
d5edaedc JB |
1250 | /* |
1251 | * If we are scanning right now then the parameters will | |
1252 | * take effect when scan finishes. | |
1253 | */ | |
fbe9c429 | 1254 | if (local->scanning) |
d5edaedc JB |
1255 | return; |
1256 | ||
965bedad JB |
1257 | if (conf->dynamic_ps_timeout > 0 && |
1258 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1259 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1260 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1261 | } else { | |
1262 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1263 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1264 | |
2a13052f JO |
1265 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1266 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1267 | return; | |
1268 | ||
1269 | conf->flags |= IEEE80211_CONF_PS; | |
1270 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1271 | } |
1272 | } | |
1273 | ||
1274 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1275 | { | |
1276 | struct ieee80211_conf *conf = &local->hw.conf; | |
1277 | ||
1278 | if (local->ps_sdata) { | |
965bedad JB |
1279 | ieee80211_enable_ps(local, local->ps_sdata); |
1280 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1281 | conf->flags &= ~IEEE80211_CONF_PS; | |
1282 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1283 | del_timer_sync(&local->dynamic_ps_timer); | |
1284 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1285 | } | |
1286 | } | |
1287 | ||
808118cb JY |
1288 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1289 | { | |
1290 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1291 | struct sta_info *sta = NULL; | |
c2c98fde | 1292 | bool authorized = false; |
808118cb JY |
1293 | |
1294 | if (!mgd->powersave) | |
1295 | return false; | |
1296 | ||
05cb9108 JB |
1297 | if (mgd->broken_ap) |
1298 | return false; | |
1299 | ||
808118cb JY |
1300 | if (!mgd->associated) |
1301 | return false; | |
1302 | ||
392b9ffb | 1303 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1304 | return false; |
1305 | ||
989c6505 | 1306 | if (!mgd->have_beacon) |
ce857888 AB |
1307 | return false; |
1308 | ||
808118cb JY |
1309 | rcu_read_lock(); |
1310 | sta = sta_info_get(sdata, mgd->bssid); | |
1311 | if (sta) | |
c2c98fde | 1312 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1313 | rcu_read_unlock(); |
1314 | ||
c2c98fde | 1315 | return authorized; |
808118cb JY |
1316 | } |
1317 | ||
965bedad | 1318 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1319 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1320 | { |
1321 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1322 | int count = 0; | |
195e294d | 1323 | int timeout; |
965bedad JB |
1324 | |
1325 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1326 | local->ps_sdata = NULL; | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1331 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1332 | continue; |
8c7914de RM |
1333 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1334 | /* If an AP vif is found, then disable PS | |
1335 | * by setting the count to zero thereby setting | |
1336 | * ps_sdata to NULL. | |
1337 | */ | |
1338 | count = 0; | |
1339 | break; | |
1340 | } | |
965bedad JB |
1341 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1342 | continue; | |
1343 | found = sdata; | |
1344 | count++; | |
1345 | } | |
1346 | ||
808118cb | 1347 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1348 | s32 beaconint_us; |
1349 | ||
1350 | if (latency < 0) | |
ed77134b | 1351 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1352 | |
1353 | beaconint_us = ieee80211_tu_to_usec( | |
1354 | found->vif.bss_conf.beacon_int); | |
1355 | ||
ff616381 | 1356 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1357 | if (timeout < 0) { |
1358 | /* | |
ff616381 JO |
1359 | * Go to full PSM if the user configures a very low |
1360 | * latency requirement. | |
0ab82b04 EP |
1361 | * The 2000 second value is there for compatibility |
1362 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1363 | * with real values. | |
195e294d | 1364 | */ |
0ab82b04 EP |
1365 | if (latency > (1900 * USEC_PER_MSEC) && |
1366 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1367 | timeout = 0; |
ff616381 JO |
1368 | else |
1369 | timeout = 100; | |
195e294d | 1370 | } |
09b85568 | 1371 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1372 | |
04fe2037 | 1373 | if (beaconint_us > latency) { |
10f644a4 | 1374 | local->ps_sdata = NULL; |
04fe2037 | 1375 | } else { |
04fe2037 | 1376 | int maxslp = 1; |
826262c3 | 1377 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1378 | |
1379 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1380 | if (!dtimper) | |
1381 | dtimper = 1; | |
1382 | else if (dtimper > 1) | |
04fe2037 JB |
1383 | maxslp = min_t(int, dtimper, |
1384 | latency / beaconint_us); | |
1385 | ||
9ccebe61 | 1386 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1387 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1388 | local->ps_sdata = found; |
04fe2037 | 1389 | } |
10f644a4 | 1390 | } else { |
965bedad | 1391 | local->ps_sdata = NULL; |
10f644a4 | 1392 | } |
965bedad JB |
1393 | |
1394 | ieee80211_change_ps(local); | |
1395 | } | |
1396 | ||
ab095877 EP |
1397 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1398 | { | |
1399 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1400 | ||
1401 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1402 | sdata->vif.bss_conf.ps = ps_allowed; | |
1403 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1404 | } | |
1405 | } | |
1406 | ||
965bedad JB |
1407 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1408 | { | |
1409 | struct ieee80211_local *local = | |
1410 | container_of(work, struct ieee80211_local, | |
1411 | dynamic_ps_disable_work); | |
1412 | ||
1413 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1414 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1415 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1416 | } | |
1417 | ||
1418 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1419 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1420 | IEEE80211_QUEUE_STOP_REASON_PS, |
1421 | false); | |
965bedad JB |
1422 | } |
1423 | ||
1424 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1425 | { | |
1426 | struct ieee80211_local *local = | |
1427 | container_of(work, struct ieee80211_local, | |
1428 | dynamic_ps_enable_work); | |
1429 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1430 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1431 | unsigned long flags; |
1432 | int q; | |
965bedad JB |
1433 | |
1434 | /* can only happen when PS was just disabled anyway */ | |
1435 | if (!sdata) | |
1436 | return; | |
1437 | ||
5e34069c CL |
1438 | ifmgd = &sdata->u.mgd; |
1439 | ||
965bedad JB |
1440 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1441 | return; | |
1442 | ||
09b85568 | 1443 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1444 | /* don't enter PS if TX frames are pending */ |
1445 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1446 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1447 | msecs_to_jiffies( | |
1448 | local->hw.conf.dynamic_ps_timeout)); | |
1449 | return; | |
1450 | } | |
77b7023a AN |
1451 | |
1452 | /* | |
1453 | * transmission can be stopped by others which leads to | |
1454 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1455 | * is not the actual idle state. | |
1456 | */ | |
1457 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1458 | for (q = 0; q < local->hw.queues; q++) { | |
1459 | if (local->queue_stop_reasons[q]) { | |
1460 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1461 | flags); | |
1462 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1463 | msecs_to_jiffies( | |
1464 | local->hw.conf.dynamic_ps_timeout)); | |
1465 | return; | |
1466 | } | |
1467 | } | |
1468 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1469 | } |
1ddc2867 | 1470 | |
375177bf | 1471 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1472 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1473 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1474 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1475 | msecs_to_jiffies( | |
1476 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1477 | } else { |
e8306f98 VN |
1478 | ieee80211_send_nullfunc(local, sdata, 1); |
1479 | /* Flush to get the tx status of nullfunc frame */ | |
39ecc01d | 1480 | ieee80211_flush_queues(local, sdata); |
e8306f98 | 1481 | } |
f3e85b9e VN |
1482 | } |
1483 | ||
2a13052f JO |
1484 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1485 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1486 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1487 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1488 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1489 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1490 | } | |
965bedad JB |
1491 | } |
1492 | ||
1493 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1494 | { | |
1495 | struct ieee80211_local *local = (void *) data; | |
1496 | ||
78f1a8b7 | 1497 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1498 | return; |
1499 | ||
42935eca | 1500 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1501 | } |
1502 | ||
164eb02d SW |
1503 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1504 | { | |
1505 | struct delayed_work *delayed_work = | |
1506 | container_of(work, struct delayed_work, work); | |
1507 | struct ieee80211_sub_if_data *sdata = | |
1508 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1509 | dfs_cac_timer_work); | |
d2859df5 | 1510 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1511 | |
34a3740d JB |
1512 | mutex_lock(&sdata->local->mtx); |
1513 | if (sdata->wdev.cac_started) { | |
1514 | ieee80211_vif_release_channel(sdata); | |
1515 | cfg80211_cac_event(sdata->dev, &chandef, | |
1516 | NL80211_RADAR_CAC_FINISHED, | |
1517 | GFP_KERNEL); | |
1518 | } | |
1519 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1520 | } |
1521 | ||
60f8b39c | 1522 | /* MLME */ |
7d25745d | 1523 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1524 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1525 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1526 | { |
f0706e82 | 1527 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1528 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1529 | size_t left; |
1530 | int count; | |
4a3cb702 JB |
1531 | const u8 *pos; |
1532 | u8 uapsd_queues = 0; | |
f0706e82 | 1533 | |
e1b3ec1a | 1534 | if (!local->ops->conf_tx) |
7d25745d | 1535 | return false; |
e1b3ec1a | 1536 | |
32c5057b | 1537 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1538 | return false; |
3434fbd3 JB |
1539 | |
1540 | if (!wmm_param) | |
7d25745d | 1541 | return false; |
3434fbd3 | 1542 | |
f0706e82 | 1543 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1544 | return false; |
ab13315a KV |
1545 | |
1546 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1547 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1548 | |
f0706e82 | 1549 | count = wmm_param[6] & 0x0f; |
46900298 | 1550 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1551 | return false; |
46900298 | 1552 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1553 | |
1554 | pos = wmm_param + 8; | |
1555 | left = wmm_param_len - 8; | |
1556 | ||
1557 | memset(¶ms, 0, sizeof(params)); | |
1558 | ||
00e96dec | 1559 | sdata->wmm_acm = 0; |
f0706e82 JB |
1560 | for (; left >= 4; left -= 4, pos += 4) { |
1561 | int aci = (pos[0] >> 5) & 0x03; | |
1562 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1563 | bool uapsd = false; |
f0706e82 JB |
1564 | int queue; |
1565 | ||
1566 | switch (aci) { | |
0eeb59fe | 1567 | case 1: /* AC_BK */ |
e100bb64 | 1568 | queue = 3; |
988c0f72 | 1569 | if (acm) |
00e96dec | 1570 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1571 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1572 | uapsd = true; | |
f0706e82 | 1573 | break; |
0eeb59fe | 1574 | case 2: /* AC_VI */ |
e100bb64 | 1575 | queue = 1; |
988c0f72 | 1576 | if (acm) |
00e96dec | 1577 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1578 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1579 | uapsd = true; | |
f0706e82 | 1580 | break; |
0eeb59fe | 1581 | case 3: /* AC_VO */ |
e100bb64 | 1582 | queue = 0; |
988c0f72 | 1583 | if (acm) |
00e96dec | 1584 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1585 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1586 | uapsd = true; | |
f0706e82 | 1587 | break; |
0eeb59fe | 1588 | case 0: /* AC_BE */ |
f0706e82 | 1589 | default: |
e100bb64 | 1590 | queue = 2; |
988c0f72 | 1591 | if (acm) |
00e96dec | 1592 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1593 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1594 | uapsd = true; | |
f0706e82 JB |
1595 | break; |
1596 | } | |
1597 | ||
1598 | params.aifs = pos[0] & 0x0f; | |
1599 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1600 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1601 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1602 | params.acm = acm; |
ab13315a KV |
1603 | params.uapsd = uapsd; |
1604 | ||
bdcbd8e0 JB |
1605 | mlme_dbg(sdata, |
1606 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1607 | queue, aci, acm, | |
1608 | params.aifs, params.cw_min, params.cw_max, | |
1609 | params.txop, params.uapsd); | |
f6f3def3 EP |
1610 | sdata->tx_conf[queue] = params; |
1611 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1612 | sdata_err(sdata, |
1613 | "failed to set TX queue parameters for queue %d\n", | |
1614 | queue); | |
f0706e82 | 1615 | } |
e1b3ec1a SG |
1616 | |
1617 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1618 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1619 | return true; |
f0706e82 JB |
1620 | } |
1621 | ||
925e64c3 SG |
1622 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1623 | { | |
1624 | lockdep_assert_held(&sdata->local->mtx); | |
1625 | ||
392b9ffb | 1626 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1627 | ieee80211_run_deferred_scan(sdata->local); |
1628 | } | |
1629 | ||
1630 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1631 | { | |
1632 | mutex_lock(&sdata->local->mtx); | |
1633 | __ieee80211_stop_poll(sdata); | |
1634 | mutex_unlock(&sdata->local->mtx); | |
1635 | } | |
1636 | ||
7a5158ef JB |
1637 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1638 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1639 | { |
bda3933a | 1640 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1641 | u32 changed = 0; |
7a5158ef JB |
1642 | bool use_protection; |
1643 | bool use_short_preamble; | |
1644 | bool use_short_slot; | |
1645 | ||
1646 | if (erp_valid) { | |
1647 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1648 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1649 | } else { | |
1650 | use_protection = false; | |
1651 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1652 | } | |
1653 | ||
1654 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1655 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1656 | use_short_slot = true; |
5628221c | 1657 | |
471b3efd | 1658 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1659 | bss_conf->use_cts_prot = use_protection; |
1660 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1661 | } |
7e9ed188 | 1662 | |
d43c7b37 | 1663 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1664 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1665 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1666 | } |
d9430a32 | 1667 | |
7a5158ef | 1668 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1669 | bss_conf->use_short_slot = use_short_slot; |
1670 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1671 | } |
1672 | ||
1673 | return changed; | |
1674 | } | |
1675 | ||
f698d856 | 1676 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1677 | struct cfg80211_bss *cbss, |
ae5eb026 | 1678 | u32 bss_info_changed) |
f0706e82 | 1679 | { |
0c1ad2ca | 1680 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1681 | struct ieee80211_local *local = sdata->local; |
68542962 | 1682 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1683 | |
ae5eb026 | 1684 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1685 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1686 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1687 | |
7ccc8bd7 | 1688 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1689 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1690 | |
0c1ad2ca JB |
1691 | sdata->u.mgd.associated = cbss; |
1692 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1693 | |
17e4ec14 JM |
1694 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1695 | ||
488dd7b5 | 1696 | if (sdata->vif.p2p) { |
9caf0364 | 1697 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1698 | |
9caf0364 JB |
1699 | rcu_read_lock(); |
1700 | ies = rcu_dereference(cbss->ies); | |
1701 | if (ies) { | |
9caf0364 JB |
1702 | int ret; |
1703 | ||
1704 | ret = cfg80211_get_p2p_attr( | |
1705 | ies->data, ies->len, | |
1706 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1707 | (u8 *) &bss_conf->p2p_noa_attr, |
1708 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1709 | if (ret >= 2) { |
67baf663 JD |
1710 | sdata->u.mgd.p2p_noa_index = |
1711 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1712 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1713 | } |
488dd7b5 | 1714 | } |
9caf0364 | 1715 | rcu_read_unlock(); |
488dd7b5 JB |
1716 | } |
1717 | ||
b291ba11 | 1718 | /* just to be sure */ |
925e64c3 | 1719 | ieee80211_stop_poll(sdata); |
b291ba11 | 1720 | |
9ac19a90 | 1721 | ieee80211_led_assoc(local, 1); |
9306102e | 1722 | |
989c6505 | 1723 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1724 | /* |
1725 | * If the AP is buggy we may get here with no DTIM period | |
1726 | * known, so assume it's 1 which is the only safe assumption | |
1727 | * in that case, although if the TIM IE is broken powersave | |
1728 | * probably just won't work at all. | |
1729 | */ | |
1730 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1731 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1732 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1733 | } else { |
817cee76 | 1734 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1735 | bss_conf->dtim_period = 0; |
826262c3 | 1736 | } |
e5b900d2 | 1737 | |
68542962 | 1738 | bss_conf->assoc = 1; |
9cef8737 | 1739 | |
a97c13c3 | 1740 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1741 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1742 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1743 | bss_info_changed |= BSS_CHANGED_CQM; |
1744 | ||
68542962 | 1745 | /* Enable ARP filtering */ |
0f19b41e | 1746 | if (bss_conf->arp_addr_cnt) |
68542962 | 1747 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1748 | |
ae5eb026 | 1749 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1750 | |
056508dc JB |
1751 | mutex_lock(&local->iflist_mtx); |
1752 | ieee80211_recalc_ps(local, -1); | |
1753 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1754 | |
04ecd257 | 1755 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1756 | ieee80211_recalc_ps_vif(sdata); |
1757 | ||
9ac19a90 | 1758 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1759 | } |
1760 | ||
e69e95db | 1761 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1762 | u16 stype, u16 reason, bool tx, |
1763 | u8 *frame_buf) | |
aa458d17 | 1764 | { |
46900298 | 1765 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1766 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1767 | u32 changed = 0; |
aa458d17 | 1768 | |
8d61ffa5 | 1769 | sdata_assert_lock(sdata); |
77fdaa12 | 1770 | |
37ad3888 JB |
1771 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1772 | return; | |
1773 | ||
b291ba11 JB |
1774 | if (WARN_ON(!ifmgd->associated)) |
1775 | return; | |
1776 | ||
79543d8e DS |
1777 | ieee80211_stop_poll(sdata); |
1778 | ||
77fdaa12 | 1779 | ifmgd->associated = NULL; |
aa458d17 TW |
1780 | netif_carrier_off(sdata->dev); |
1781 | ||
88bc40e8 EP |
1782 | /* |
1783 | * if we want to get out of ps before disassoc (why?) we have | |
1784 | * to do it before sending disassoc, as otherwise the null-packet | |
1785 | * won't be valid. | |
1786 | */ | |
1787 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1788 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1789 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1790 | } | |
1791 | local->ps_sdata = NULL; | |
1792 | ||
ab095877 EP |
1793 | /* disable per-vif ps */ |
1794 | ieee80211_recalc_ps_vif(sdata); | |
1795 | ||
f823981e EP |
1796 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1797 | if (tx) | |
39ecc01d | 1798 | ieee80211_flush_queues(local, sdata); |
f823981e | 1799 | |
37ad3888 JB |
1800 | /* deauthenticate/disassociate now */ |
1801 | if (tx || frame_buf) | |
88a9e31c EP |
1802 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1803 | reason, tx, frame_buf); | |
37ad3888 JB |
1804 | |
1805 | /* flush out frame */ | |
1806 | if (tx) | |
39ecc01d | 1807 | ieee80211_flush_queues(local, sdata); |
37ad3888 | 1808 | |
88a9e31c EP |
1809 | /* clear bssid only after building the needed mgmt frames */ |
1810 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1811 | ||
37ad3888 | 1812 | /* remove AP and TDLS peers */ |
d34ba216 | 1813 | sta_info_flush(sdata); |
37ad3888 JB |
1814 | |
1815 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1816 | changed |= ieee80211_reset_erp_info(sdata); |
1817 | ||
f5e5bf25 | 1818 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1819 | changed |= BSS_CHANGED_ASSOC; |
1820 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1821 | |
67baf663 JD |
1822 | ifmgd->p2p_noa_index = -1; |
1823 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
1824 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 1825 | |
dd5ecfea | 1826 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
1827 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1828 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
1829 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
1830 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 1831 | |
1ea6f9c0 | 1832 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1833 | |
520eb820 KV |
1834 | del_timer_sync(&local->dynamic_ps_timer); |
1835 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1836 | ||
68542962 | 1837 | /* Disable ARP filtering */ |
0f19b41e | 1838 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1839 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1840 | |
3abead59 JB |
1841 | sdata->vif.bss_conf.qos = false; |
1842 | changed |= BSS_CHANGED_QOS; | |
1843 | ||
0aaffa9b JB |
1844 | /* The BSSID (not really interesting) and HT changed */ |
1845 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1846 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1847 | |
3abead59 JB |
1848 | /* disassociated - set to defaults now */ |
1849 | ieee80211_set_wmm_default(sdata, false); | |
1850 | ||
b9dcf712 JB |
1851 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1852 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1853 | del_timer_sync(&sdata->u.mgd.timer); | |
1854 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 1855 | |
826262c3 | 1856 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
1857 | sdata->vif.bss_conf.beacon_rate = NULL; |
1858 | ||
989c6505 | 1859 | ifmgd->have_beacon = false; |
826262c3 | 1860 | |
028e8da0 | 1861 | ifmgd->flags = 0; |
34a3740d | 1862 | mutex_lock(&local->mtx); |
028e8da0 | 1863 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
1864 | |
1865 | sdata->vif.csa_active = false; | |
a46992b4 LC |
1866 | if (sdata->csa_block_tx) { |
1867 | ieee80211_wake_vif_queues(local, sdata, | |
1868 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1869 | sdata->csa_block_tx = false; | |
1870 | } | |
34a3740d | 1871 | mutex_unlock(&local->mtx); |
2475b1cc MS |
1872 | |
1873 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; | |
aa458d17 | 1874 | } |
f0706e82 | 1875 | |
3cf335d5 KV |
1876 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1877 | struct ieee80211_hdr *hdr) | |
1878 | { | |
1879 | /* | |
1880 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1881 | * from AP because we know that the connection is working both ways | |
1882 | * at that time. But multicast frames (and hence also beacons) must | |
1883 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1884 | * data idle periods for sending the periodic probe request to the |
1885 | * AP we're connected to. | |
3cf335d5 | 1886 | */ |
b291ba11 JB |
1887 | if (is_multicast_ether_addr(hdr->addr1)) |
1888 | return; | |
1889 | ||
be099e82 | 1890 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1891 | } |
f0706e82 | 1892 | |
4e5ff376 FF |
1893 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1894 | { | |
1895 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1896 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1897 | |
133d40f9 | 1898 | mutex_lock(&local->mtx); |
392b9ffb SG |
1899 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
1900 | goto out; | |
4e5ff376 | 1901 | |
925e64c3 | 1902 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1903 | |
1904 | mutex_lock(&local->iflist_mtx); | |
1905 | ieee80211_recalc_ps(local, -1); | |
1906 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1907 | |
1908 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1909 | goto out; |
4e5ff376 FF |
1910 | |
1911 | /* | |
1912 | * We've received a probe response, but are not sure whether | |
1913 | * we have or will be receiving any beacons or data, so let's | |
1914 | * schedule the timers again, just in case. | |
1915 | */ | |
1916 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1917 | ||
1918 | mod_timer(&ifmgd->conn_mon_timer, | |
1919 | round_jiffies_up(jiffies + | |
1920 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1921 | out: |
133d40f9 | 1922 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1923 | } |
1924 | ||
1925 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1926 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1927 | { |
75706d0e | 1928 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1929 | return; |
1930 | ||
4e5ff376 FF |
1931 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
1932 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 1933 | if (ack) |
cab1c7fd | 1934 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
1935 | else |
1936 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 1937 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 1938 | return; |
4e5ff376 | 1939 | } |
cab1c7fd WD |
1940 | |
1941 | if (ack) | |
1942 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1943 | } |
1944 | ||
a43abf29 ML |
1945 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1946 | { | |
1947 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1948 | const u8 *ssid; | |
f01a067d | 1949 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1950 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
1951 | |
1952 | /* | |
1953 | * Try sending broadcast probe requests for the last three | |
1954 | * probe requests after the first ones failed since some | |
1955 | * buggy APs only support broadcast probe requests. | |
1956 | */ | |
1957 | if (ifmgd->probe_send_count >= unicast_limit) | |
1958 | dst = NULL; | |
a43abf29 | 1959 | |
4e5ff376 FF |
1960 | /* |
1961 | * When the hardware reports an accurate Tx ACK status, it's | |
1962 | * better to send a nullfunc frame instead of a probe request, | |
1963 | * as it will kick us off the AP quickly if we aren't associated | |
1964 | * anymore. The timeout will be reset if the frame is ACKed by | |
1965 | * the AP. | |
1966 | */ | |
992e68bf SD |
1967 | ifmgd->probe_send_count++; |
1968 | ||
04ac3c0e FF |
1969 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
1970 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 1971 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 1972 | } else { |
88c868c4 SG |
1973 | int ssid_len; |
1974 | ||
9caf0364 | 1975 | rcu_read_lock(); |
4e5ff376 | 1976 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
1977 | if (WARN_ON_ONCE(ssid == NULL)) |
1978 | ssid_len = 0; | |
1979 | else | |
1980 | ssid_len = ssid[1]; | |
1981 | ||
1982 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 1983 | 0, (u32) -1, true, 0, |
55de908a | 1984 | ifmgd->associated->channel, false); |
9caf0364 | 1985 | rcu_read_unlock(); |
4e5ff376 | 1986 | } |
a43abf29 | 1987 | |
180205bd | 1988 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 1989 | run_again(sdata, ifmgd->probe_timeout); |
f69b9c79 | 1990 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
39ecc01d | 1991 | ieee80211_flush_queues(sdata->local, sdata); |
a43abf29 ML |
1992 | } |
1993 | ||
b291ba11 JB |
1994 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
1995 | bool beacon) | |
04de8381 | 1996 | { |
04de8381 | 1997 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 1998 | bool already = false; |
34bfc411 | 1999 | |
9607e6b6 | 2000 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2001 | return; |
2002 | ||
8d61ffa5 | 2003 | sdata_lock(sdata); |
77fdaa12 JB |
2004 | |
2005 | if (!ifmgd->associated) | |
2006 | goto out; | |
2007 | ||
133d40f9 SG |
2008 | mutex_lock(&sdata->local->mtx); |
2009 | ||
2010 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2011 | mutex_unlock(&sdata->local->mtx); | |
2012 | goto out; | |
2013 | } | |
2014 | ||
a13fbe54 | 2015 | if (beacon) { |
bdcbd8e0 | 2016 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2017 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2018 | beacon_loss_count); | |
bdcbd8e0 | 2019 | |
a13fbe54 BG |
2020 | ieee80211_cqm_rssi_notify(&sdata->vif, |
2021 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, | |
2022 | GFP_KERNEL); | |
2023 | } | |
04de8381 | 2024 | |
b291ba11 JB |
2025 | /* |
2026 | * The driver/our work has already reported this event or the | |
2027 | * connection monitoring has kicked in and we have already sent | |
2028 | * a probe request. Or maybe the AP died and the driver keeps | |
2029 | * reporting until we disassociate... | |
2030 | * | |
2031 | * In either case we have to ignore the current call to this | |
2032 | * function (except for setting the correct probe reason bit) | |
2033 | * because otherwise we would reset the timer every time and | |
2034 | * never check whether we received a probe response! | |
2035 | */ | |
392b9ffb | 2036 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2037 | already = true; |
2038 | ||
12b5f34d EP |
2039 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2040 | ||
133d40f9 SG |
2041 | mutex_unlock(&sdata->local->mtx); |
2042 | ||
b291ba11 JB |
2043 | if (already) |
2044 | goto out; | |
2045 | ||
4e751843 JB |
2046 | mutex_lock(&sdata->local->iflist_mtx); |
2047 | ieee80211_recalc_ps(sdata->local, -1); | |
2048 | mutex_unlock(&sdata->local->iflist_mtx); | |
2049 | ||
a43abf29 ML |
2050 | ifmgd->probe_send_count = 0; |
2051 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2052 | out: |
8d61ffa5 | 2053 | sdata_unlock(sdata); |
04de8381 KV |
2054 | } |
2055 | ||
a619a4c0 JO |
2056 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2057 | struct ieee80211_vif *vif) | |
2058 | { | |
2059 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2060 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2061 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2062 | struct sk_buff *skb; |
2063 | const u8 *ssid; | |
88c868c4 | 2064 | int ssid_len; |
a619a4c0 JO |
2065 | |
2066 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2067 | return NULL; | |
2068 | ||
8d61ffa5 | 2069 | sdata_assert_lock(sdata); |
a619a4c0 | 2070 | |
d9b3b28b EP |
2071 | if (ifmgd->associated) |
2072 | cbss = ifmgd->associated; | |
2073 | else if (ifmgd->auth_data) | |
2074 | cbss = ifmgd->auth_data->bss; | |
2075 | else if (ifmgd->assoc_data) | |
2076 | cbss = ifmgd->assoc_data->bss; | |
2077 | else | |
a619a4c0 JO |
2078 | return NULL; |
2079 | ||
9caf0364 | 2080 | rcu_read_lock(); |
d9b3b28b | 2081 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2082 | if (WARN_ON_ONCE(ssid == NULL)) |
2083 | ssid_len = 0; | |
2084 | else | |
2085 | ssid_len = ssid[1]; | |
2086 | ||
d9b3b28b | 2087 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 2088 | (u32) -1, cbss->channel, |
6b77863b | 2089 | ssid + 2, ssid_len, |
85a237fe | 2090 | NULL, 0, true); |
9caf0364 | 2091 | rcu_read_unlock(); |
a619a4c0 JO |
2092 | |
2093 | return skb; | |
2094 | } | |
2095 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2096 | ||
eef9e54c | 2097 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2098 | { |
59af6928 | 2099 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2100 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2101 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2102 | |
8d61ffa5 | 2103 | sdata_lock(sdata); |
1e4dcd01 | 2104 | if (!ifmgd->associated) { |
8d61ffa5 | 2105 | sdata_unlock(sdata); |
1e4dcd01 JO |
2106 | return; |
2107 | } | |
2108 | ||
37ad3888 JB |
2109 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2110 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2111 | true, frame_buf); |
59af6928 | 2112 | mutex_lock(&local->mtx); |
7578d575 | 2113 | sdata->vif.csa_active = false; |
a46992b4 LC |
2114 | if (sdata->csa_block_tx) { |
2115 | ieee80211_wake_vif_queues(local, sdata, | |
2116 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2117 | sdata->csa_block_tx = false; | |
2118 | } | |
59af6928 | 2119 | mutex_unlock(&local->mtx); |
7da7cc1d | 2120 | |
6ff57cf8 JB |
2121 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
2122 | IEEE80211_DEAUTH_FRAME_LEN); | |
8d61ffa5 | 2123 | sdata_unlock(sdata); |
1e4dcd01 JO |
2124 | } |
2125 | ||
cc74c0c7 | 2126 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2127 | { |
2128 | struct ieee80211_sub_if_data *sdata = | |
2129 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2130 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2131 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2132 | struct sta_info *sta; | |
2133 | ||
2134 | if (ifmgd->associated) { | |
30fa9047 | 2135 | rcu_read_lock(); |
a85e1d55 PS |
2136 | sta = sta_info_get(sdata, ifmgd->bssid); |
2137 | if (sta) | |
2138 | sta->beacon_loss_count++; | |
30fa9047 | 2139 | rcu_read_unlock(); |
a85e1d55 | 2140 | } |
b291ba11 | 2141 | |
682bd38b | 2142 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2143 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2144 | ifmgd->bssid); | |
eef9e54c | 2145 | __ieee80211_disconnect(sdata); |
882a7c69 | 2146 | } else { |
1e4dcd01 | 2147 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2148 | } |
2149 | } | |
2150 | ||
2151 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2152 | { | |
2153 | struct ieee80211_sub_if_data *sdata = | |
2154 | container_of(work, struct ieee80211_sub_if_data, | |
2155 | u.mgd.csa_connection_drop_work); | |
2156 | ||
eef9e54c | 2157 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2158 | } |
2159 | ||
04de8381 KV |
2160 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2161 | { | |
2162 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2163 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2164 | |
b5878a2d JB |
2165 | trace_api_beacon_loss(sdata); |
2166 | ||
682bd38b | 2167 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2168 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2169 | } |
2170 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2171 | ||
1e4dcd01 JO |
2172 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2173 | { | |
2174 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2175 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2176 | ||
b5878a2d JB |
2177 | trace_api_connection_loss(sdata); |
2178 | ||
682bd38b | 2179 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2180 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2181 | } | |
2182 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2183 | ||
2184 | ||
66e67e41 JB |
2185 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2186 | bool assoc) | |
2187 | { | |
2188 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2189 | ||
8d61ffa5 | 2190 | sdata_assert_lock(sdata); |
66e67e41 | 2191 | |
66e67e41 JB |
2192 | if (!assoc) { |
2193 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
2194 | ||
2195 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2196 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2197 | sdata->u.mgd.flags = 0; |
34a3740d | 2198 | mutex_lock(&sdata->local->mtx); |
55de908a | 2199 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2200 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2201 | } |
2202 | ||
5b112d3d | 2203 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2204 | kfree(auth_data); |
2205 | sdata->u.mgd.auth_data = NULL; | |
2206 | } | |
2207 | ||
2208 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2209 | struct ieee80211_mgmt *mgmt, size_t len) | |
2210 | { | |
1672c0e3 | 2211 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2212 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2213 | u8 *pos; | |
2214 | struct ieee802_11_elems elems; | |
1672c0e3 | 2215 | u32 tx_flags = 0; |
66e67e41 JB |
2216 | |
2217 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2218 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2219 | if (!elems.challenge) |
2220 | return; | |
2221 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2222 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2223 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2224 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2225 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2226 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2227 | elems.challenge - 2, elems.challenge_len + 2, |
2228 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2229 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2230 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2231 | } |
2232 | ||
8d61ffa5 JB |
2233 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2234 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2235 | { |
2236 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2237 | u8 bssid[ETH_ALEN]; | |
2238 | u16 auth_alg, auth_transaction, status_code; | |
2239 | struct sta_info *sta; | |
2240 | ||
8d61ffa5 | 2241 | sdata_assert_lock(sdata); |
66e67e41 JB |
2242 | |
2243 | if (len < 24 + 6) | |
8d61ffa5 | 2244 | return; |
66e67e41 JB |
2245 | |
2246 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2247 | return; |
66e67e41 JB |
2248 | |
2249 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2250 | ||
b203ca39 | 2251 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2252 | return; |
66e67e41 JB |
2253 | |
2254 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2255 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2256 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2257 | ||
2258 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2259 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2260 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2261 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2262 | auth_transaction, | |
2263 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2264 | return; |
0f4126e8 | 2265 | } |
66e67e41 JB |
2266 | |
2267 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2268 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2269 | mgmt->sa, status_code); | |
dac211ec | 2270 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2271 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2272 | return; |
66e67e41 JB |
2273 | } |
2274 | ||
2275 | switch (ifmgd->auth_data->algorithm) { | |
2276 | case WLAN_AUTH_OPEN: | |
2277 | case WLAN_AUTH_LEAP: | |
2278 | case WLAN_AUTH_FT: | |
6b8ece3a | 2279 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2280 | break; |
2281 | case WLAN_AUTH_SHARED_KEY: | |
2282 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2283 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2284 | /* need another frame */ | |
8d61ffa5 | 2285 | return; |
66e67e41 JB |
2286 | } |
2287 | break; | |
2288 | default: | |
2289 | WARN_ONCE(1, "invalid auth alg %d", | |
2290 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2291 | return; |
66e67e41 JB |
2292 | } |
2293 | ||
bdcbd8e0 | 2294 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2295 | ifmgd->auth_data->done = true; |
2296 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2297 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2298 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2299 | |
6b8ece3a JM |
2300 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2301 | ifmgd->auth_data->expected_transaction != 2) { | |
2302 | /* | |
2303 | * Report auth frame to user space for processing since another | |
2304 | * round of Authentication frames is still needed. | |
2305 | */ | |
6ff57cf8 | 2306 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2307 | return; |
6b8ece3a JM |
2308 | } |
2309 | ||
66e67e41 JB |
2310 | /* move station state to auth */ |
2311 | mutex_lock(&sdata->local->sta_mtx); | |
2312 | sta = sta_info_get(sdata, bssid); | |
2313 | if (!sta) { | |
2314 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2315 | goto out_err; | |
2316 | } | |
2317 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2318 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2319 | goto out_err; |
2320 | } | |
2321 | mutex_unlock(&sdata->local->sta_mtx); | |
2322 | ||
6ff57cf8 | 2323 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2324 | return; |
66e67e41 JB |
2325 | out_err: |
2326 | mutex_unlock(&sdata->local->sta_mtx); | |
2327 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2328 | } |
2329 | ||
dfa1ad29 CO |
2330 | #define case_WLAN(type) \ |
2331 | case WLAN_REASON_##type: return #type | |
2332 | ||
2333 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2334 | { | |
2335 | switch (reason_code) { | |
2336 | case_WLAN(UNSPECIFIED); | |
2337 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2338 | case_WLAN(DEAUTH_LEAVING); | |
2339 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2340 | case_WLAN(DISASSOC_AP_BUSY); | |
2341 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2342 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2343 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2344 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2345 | case_WLAN(DISASSOC_BAD_POWER); | |
2346 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2347 | case_WLAN(INVALID_IE); | |
2348 | case_WLAN(MIC_FAILURE); | |
2349 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2350 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2351 | case_WLAN(IE_DIFFERENT); | |
2352 | case_WLAN(INVALID_GROUP_CIPHER); | |
2353 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2354 | case_WLAN(INVALID_AKMP); | |
2355 | case_WLAN(UNSUPP_RSN_VERSION); | |
2356 | case_WLAN(INVALID_RSN_IE_CAP); | |
2357 | case_WLAN(IEEE8021X_FAILED); | |
2358 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2359 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2360 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2361 | case_WLAN(DISASSOC_LOW_ACK); | |
2362 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2363 | case_WLAN(QSTA_LEAVE_QBSS); | |
2364 | case_WLAN(QSTA_NOT_USE); | |
2365 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2366 | case_WLAN(QSTA_TIMEOUT); | |
2367 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2368 | case_WLAN(MESH_PEER_CANCELED); | |
2369 | case_WLAN(MESH_MAX_PEERS); | |
2370 | case_WLAN(MESH_CONFIG); | |
2371 | case_WLAN(MESH_CLOSE); | |
2372 | case_WLAN(MESH_MAX_RETRIES); | |
2373 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2374 | case_WLAN(MESH_INVALID_GTK); | |
2375 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2376 | case_WLAN(MESH_INVALID_SECURITY); | |
2377 | case_WLAN(MESH_PATH_ERROR); | |
2378 | case_WLAN(MESH_PATH_NOFORWARD); | |
2379 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2380 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2381 | case_WLAN(MESH_CHAN_REGULATORY); | |
2382 | case_WLAN(MESH_CHAN); | |
2383 | default: return "<unknown>"; | |
2384 | } | |
2385 | } | |
66e67e41 | 2386 | |
8d61ffa5 JB |
2387 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2388 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2389 | { |
46900298 | 2390 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2391 | const u8 *bssid = NULL; |
f0706e82 JB |
2392 | u16 reason_code; |
2393 | ||
8d61ffa5 | 2394 | sdata_assert_lock(sdata); |
66e67e41 | 2395 | |
f4ea83dd | 2396 | if (len < 24 + 2) |
8d61ffa5 | 2397 | return; |
f0706e82 | 2398 | |
66e67e41 | 2399 | if (!ifmgd->associated || |
b203ca39 | 2400 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2401 | return; |
77fdaa12 | 2402 | |
0c1ad2ca | 2403 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2404 | |
2405 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2406 | ||
dfa1ad29 CO |
2407 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2408 | bssid, reason_code, ieee80211_get_reason_code_string(reason_code)); | |
77fdaa12 | 2409 | |
37ad3888 JB |
2410 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2411 | ||
6ff57cf8 | 2412 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2413 | } |
2414 | ||
2415 | ||
8d61ffa5 JB |
2416 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2417 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2418 | { |
46900298 | 2419 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2420 | u16 reason_code; |
2421 | ||
8d61ffa5 | 2422 | sdata_assert_lock(sdata); |
77fdaa12 | 2423 | |
66e67e41 | 2424 | if (len < 24 + 2) |
8d61ffa5 | 2425 | return; |
77fdaa12 | 2426 | |
66e67e41 | 2427 | if (!ifmgd->associated || |
b203ca39 | 2428 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2429 | return; |
f0706e82 JB |
2430 | |
2431 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2432 | ||
bdcbd8e0 JB |
2433 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2434 | mgmt->sa, reason_code); | |
f0706e82 | 2435 | |
37ad3888 JB |
2436 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2437 | ||
6ff57cf8 | 2438 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2439 | } |
2440 | ||
c74d084f CL |
2441 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2442 | u8 *supp_rates, unsigned int supp_rates_len, | |
2443 | u32 *rates, u32 *basic_rates, | |
2444 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2445 | int *min_rate, int *min_rate_index, |
2446 | int shift, u32 rate_flags) | |
c74d084f CL |
2447 | { |
2448 | int i, j; | |
2449 | ||
2450 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2451 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2452 | bool is_basic = !!(supp_rates[i] & 0x80); |
2453 | ||
2103dec1 | 2454 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2455 | *have_higher_than_11mbit = true; |
2456 | ||
2457 | /* | |
2458 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2459 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2460 | * | |
2461 | * Note: Even through the membership selector and the basic | |
2462 | * rate flag share the same bit, they are not exactly | |
2463 | * the same. | |
2464 | */ | |
2465 | if (!!(supp_rates[i] & 0x80) && | |
2466 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2467 | continue; | |
2468 | ||
2469 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2470 | struct ieee80211_rate *br; |
2471 | int brate; | |
2472 | ||
2473 | br = &sband->bitrates[j]; | |
2474 | if ((rate_flags & br->flags) != rate_flags) | |
2475 | continue; | |
2476 | ||
2477 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2478 | if (brate == rate) { | |
c74d084f CL |
2479 | *rates |= BIT(j); |
2480 | if (is_basic) | |
2481 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2482 | if ((rate * 5) < *min_rate) { |
2483 | *min_rate = rate * 5; | |
c74d084f CL |
2484 | *min_rate_index = j; |
2485 | } | |
2486 | break; | |
2487 | } | |
2488 | } | |
2489 | } | |
2490 | } | |
f0706e82 | 2491 | |
66e67e41 JB |
2492 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2493 | bool assoc) | |
2494 | { | |
2495 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2496 | ||
8d61ffa5 | 2497 | sdata_assert_lock(sdata); |
66e67e41 | 2498 | |
66e67e41 JB |
2499 | if (!assoc) { |
2500 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2501 | ||
2502 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2503 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2504 | sdata->u.mgd.flags = 0; |
34a3740d | 2505 | mutex_lock(&sdata->local->mtx); |
55de908a | 2506 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2507 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2508 | } |
2509 | ||
2510 | kfree(assoc_data); | |
2511 | sdata->u.mgd.assoc_data = NULL; | |
2512 | } | |
2513 | ||
2514 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2515 | struct cfg80211_bss *cbss, | |
af6b6374 | 2516 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2517 | { |
46900298 | 2518 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2519 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2520 | struct ieee80211_supported_band *sband; |
f0706e82 | 2521 | struct sta_info *sta; |
af6b6374 | 2522 | u8 *pos; |
af6b6374 | 2523 | u16 capab_info, aid; |
f0706e82 | 2524 | struct ieee802_11_elems elems; |
bda3933a | 2525 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2526 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2527 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2528 | u32 changed = 0; |
c74d084f | 2529 | int err; |
35d865af | 2530 | bool ret; |
f0706e82 | 2531 | |
af6b6374 | 2532 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2533 | |
f0706e82 | 2534 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2535 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2536 | |
1dd84aa2 | 2537 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2538 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2539 | aid); | |
1dd84aa2 JB |
2540 | aid &= ~(BIT(15) | BIT(14)); |
2541 | ||
05cb9108 JB |
2542 | ifmgd->broken_ap = false; |
2543 | ||
2544 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2545 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2546 | aid); | |
05cb9108 JB |
2547 | aid = 0; |
2548 | ifmgd->broken_ap = true; | |
2549 | } | |
2550 | ||
af6b6374 | 2551 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2552 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2553 | |
f0706e82 | 2554 | if (!elems.supp_rates) { |
bdcbd8e0 | 2555 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2556 | return false; |
f0706e82 JB |
2557 | } |
2558 | ||
46900298 | 2559 | ifmgd->aid = aid; |
f0706e82 | 2560 | |
35d865af JB |
2561 | /* |
2562 | * Some APs are erroneously not including some information in their | |
2563 | * (re)association response frames. Try to recover by using the data | |
2564 | * from the beacon or probe response. This seems to afflict mobile | |
2565 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2566 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2567 | */ | |
2568 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2569 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2570 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2571 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2572 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2573 | const struct cfg80211_bss_ies *ies; | |
2574 | struct ieee802_11_elems bss_elems; | |
2575 | ||
2576 | rcu_read_lock(); | |
2577 | ies = rcu_dereference(cbss->ies); | |
2578 | if (ies) | |
2579 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2580 | GFP_ATOMIC); | |
2581 | rcu_read_unlock(); | |
2582 | if (!bss_ies) | |
2583 | return false; | |
2584 | ||
2585 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2586 | false, &bss_elems); | |
2587 | if (assoc_data->wmm && | |
2588 | !elems.wmm_param && bss_elems.wmm_param) { | |
2589 | elems.wmm_param = bss_elems.wmm_param; | |
2590 | sdata_info(sdata, | |
2591 | "AP bug: WMM param missing from AssocResp\n"); | |
2592 | } | |
2593 | ||
2594 | /* | |
2595 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2596 | * have to include the IEs in the (re)association response. | |
2597 | */ | |
2598 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2599 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2600 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2601 | sdata_info(sdata, | |
2602 | "AP bug: HT capability missing from AssocResp\n"); | |
2603 | } | |
2604 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2605 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2606 | elems.ht_operation = bss_elems.ht_operation; | |
2607 | sdata_info(sdata, | |
2608 | "AP bug: HT operation missing from AssocResp\n"); | |
2609 | } | |
2610 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2611 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2612 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2613 | sdata_info(sdata, | |
2614 | "AP bug: VHT capa missing from AssocResp\n"); | |
2615 | } | |
2616 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2617 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2618 | elems.vht_operation = bss_elems.vht_operation; | |
2619 | sdata_info(sdata, | |
2620 | "AP bug: VHT operation missing from AssocResp\n"); | |
2621 | } | |
2622 | } | |
2623 | ||
30eb1dc2 JB |
2624 | /* |
2625 | * We previously checked these in the beacon/probe response, so | |
2626 | * they should be present here. This is just a safety net. | |
2627 | */ | |
2628 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2629 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2630 | sdata_info(sdata, | |
35d865af JB |
2631 | "HT AP is missing WMM params or HT capability/operation\n"); |
2632 | ret = false; | |
2633 | goto out; | |
30eb1dc2 JB |
2634 | } |
2635 | ||
2636 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2637 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2638 | sdata_info(sdata, | |
35d865af JB |
2639 | "VHT AP is missing VHT capability/operation\n"); |
2640 | ret = false; | |
2641 | goto out; | |
30eb1dc2 JB |
2642 | } |
2643 | ||
2a33bee2 GE |
2644 | mutex_lock(&sdata->local->sta_mtx); |
2645 | /* | |
2646 | * station info was already allocated and inserted before | |
2647 | * the association and should be available to us | |
2648 | */ | |
7852e361 | 2649 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2650 | if (WARN_ON(!sta)) { |
2651 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2652 | ret = false; |
2653 | goto out; | |
77fdaa12 | 2654 | } |
05e5e883 | 2655 | |
55de908a | 2656 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2657 | |
30eb1dc2 | 2658 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2659 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2660 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2661 | elems.ht_cap_elem, sta); |
64f68e5d | 2662 | |
818255ea MP |
2663 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2664 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2665 | elems.vht_cap_elem, sta); |
818255ea | 2666 | |
30eb1dc2 JB |
2667 | /* |
2668 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2669 | * in their association response, so ignore that data for our own | |
2670 | * configuration. If it changed since the last beacon, we'll get the | |
2671 | * next beacon and update then. | |
2672 | */ | |
1128958d | 2673 | |
bee7f586 JB |
2674 | /* |
2675 | * If an operating mode notification IE is present, override the | |
2676 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2677 | * and use the # of streams from that element. | |
2678 | */ | |
2679 | if (elems.opmode_notif && | |
2680 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2681 | u8 nss; | |
2682 | ||
2683 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2684 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2685 | nss += 1; | |
2686 | sta->sta.rx_nss = nss; | |
2687 | } | |
2688 | ||
4b7679a5 | 2689 | rate_control_rate_init(sta); |
f0706e82 | 2690 | |
46900298 | 2691 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2692 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2693 | |
a74a8c84 | 2694 | sta->sta.wme = elems.wmm_param; |
ddf4ac53 | 2695 | |
3e4d40fa | 2696 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2697 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2698 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2699 | if (err) { | |
bdcbd8e0 JB |
2700 | sdata_info(sdata, |
2701 | "failed to move station %pM to desired state\n", | |
2702 | sta->sta.addr); | |
c8987876 JB |
2703 | WARN_ON(__sta_info_destroy(sta)); |
2704 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2705 | ret = false; |
2706 | goto out; | |
c8987876 JB |
2707 | } |
2708 | ||
7852e361 | 2709 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2710 | |
f2176d72 JO |
2711 | /* |
2712 | * Always handle WMM once after association regardless | |
2713 | * of the first value the AP uses. Setting -1 here has | |
2714 | * that effect because the AP values is an unsigned | |
2715 | * 4-bit value. | |
2716 | */ | |
2717 | ifmgd->wmm_last_param_set = -1; | |
2718 | ||
095d81ce | 2719 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 2720 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2721 | elems.wmm_param_len); |
aa837e1d | 2722 | else |
3abead59 JB |
2723 | ieee80211_set_wmm_default(sdata, false); |
2724 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2725 | |
60f8b39c JB |
2726 | /* set AID and assoc capability, |
2727 | * ieee80211_set_associated() will tell the driver */ | |
2728 | bss_conf->aid = aid; | |
2729 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2730 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2731 | |
d524215f FF |
2732 | /* |
2733 | * If we're using 4-addr mode, let the AP know that we're | |
2734 | * doing so, so that it can create the STA VLAN on its side | |
2735 | */ | |
2736 | if (ifmgd->use_4addr) | |
2737 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2738 | ||
15b7b062 | 2739 | /* |
b291ba11 JB |
2740 | * Start timer to probe the connection to the AP now. |
2741 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2742 | */ |
b291ba11 | 2743 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2744 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2745 | |
35d865af JB |
2746 | ret = true; |
2747 | out: | |
2748 | kfree(bss_ies); | |
2749 | return ret; | |
f0706e82 JB |
2750 | } |
2751 | ||
8d61ffa5 JB |
2752 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
2753 | struct ieee80211_mgmt *mgmt, | |
2754 | size_t len) | |
66e67e41 JB |
2755 | { |
2756 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2757 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2758 | u16 capab_info, status_code, aid; | |
2759 | struct ieee802_11_elems elems; | |
2760 | u8 *pos; | |
2761 | bool reassoc; | |
8d61ffa5 | 2762 | struct cfg80211_bss *bss; |
66e67e41 | 2763 | |
8d61ffa5 | 2764 | sdata_assert_lock(sdata); |
66e67e41 JB |
2765 | |
2766 | if (!assoc_data) | |
8d61ffa5 | 2767 | return; |
b203ca39 | 2768 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 2769 | return; |
66e67e41 JB |
2770 | |
2771 | /* | |
2772 | * AssocResp and ReassocResp have identical structure, so process both | |
2773 | * of them in this function. | |
2774 | */ | |
2775 | ||
2776 | if (len < 24 + 6) | |
8d61ffa5 | 2777 | return; |
66e67e41 JB |
2778 | |
2779 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2780 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2781 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2782 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2783 | ||
bdcbd8e0 JB |
2784 | sdata_info(sdata, |
2785 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2786 | reassoc ? "Rea" : "A", mgmt->sa, | |
2787 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2788 | |
2789 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 2790 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2791 | |
2792 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
2793 | elems.timeout_int && |
2794 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 2795 | u32 tu, ms; |
79ba1d89 | 2796 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 2797 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
2798 | sdata_info(sdata, |
2799 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2800 | mgmt->sa, tu, ms); | |
66e67e41 | 2801 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 2802 | assoc_data->timeout_started = true; |
66e67e41 | 2803 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
2804 | run_again(sdata, assoc_data->timeout); |
2805 | return; | |
66e67e41 JB |
2806 | } |
2807 | ||
8d61ffa5 | 2808 | bss = assoc_data->bss; |
66e67e41 JB |
2809 | |
2810 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2811 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2812 | mgmt->sa, status_code); | |
66e67e41 JB |
2813 | ieee80211_destroy_assoc_data(sdata, false); |
2814 | } else { | |
8d61ffa5 | 2815 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 2816 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 2817 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 2818 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 2819 | return; |
66e67e41 | 2820 | } |
635d999f | 2821 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2822 | |
2823 | /* | |
2824 | * destroy assoc_data afterwards, as otherwise an idle | |
2825 | * recalc after assoc_data is NULL but before associated | |
2826 | * is set can cause the interface to go idle | |
2827 | */ | |
2828 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2829 | } |
2830 | ||
6ff57cf8 | 2831 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); |
66e67e41 | 2832 | } |
8e3c1b77 | 2833 | |
98c8fccf | 2834 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2835 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2836 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2837 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2838 | { |
2839 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 2840 | struct ieee80211_bss *bss; |
98c8fccf | 2841 | struct ieee80211_channel *channel; |
56007a02 | 2842 | |
8d61ffa5 | 2843 | sdata_assert_lock(sdata); |
b4f286a1 | 2844 | |
3afc2167 EG |
2845 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
2846 | if (!channel) | |
98c8fccf JB |
2847 | return; |
2848 | ||
98c8fccf | 2849 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2850 | channel); |
817cee76 | 2851 | if (bss) { |
817cee76 | 2852 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 2853 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 2854 | } |
f0706e82 JB |
2855 | } |
2856 | ||
2857 | ||
f698d856 | 2858 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2859 | struct sk_buff *skb) |
f0706e82 | 2860 | { |
af6b6374 | 2861 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2862 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2863 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2864 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2865 | struct ieee802_11_elems elems; |
2866 | ||
15b7b062 KV |
2867 | ifmgd = &sdata->u.mgd; |
2868 | ||
8d61ffa5 | 2869 | sdata_assert_lock(sdata); |
77fdaa12 | 2870 | |
b203ca39 | 2871 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2872 | return; /* ignore ProbeResp to foreign address */ |
2873 | ||
ae6a44e3 EK |
2874 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2875 | if (baselen > len) | |
2876 | return; | |
2877 | ||
2878 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 2879 | false, &elems); |
ae6a44e3 | 2880 | |
d45c4172 | 2881 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2882 | |
77fdaa12 | 2883 | if (ifmgd->associated && |
b203ca39 | 2884 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2885 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2886 | |
2887 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2888 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2889 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2890 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2891 | ifmgd->auth_data->tries = 0; |
2892 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 2893 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2894 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2895 | } |
f0706e82 JB |
2896 | } |
2897 | ||
d91f36db JB |
2898 | /* |
2899 | * This is the canonical list of information elements we care about, | |
2900 | * the filter code also gives us all changes to the Microsoft OUI | |
2901 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2902 | * | |
2903 | * We implement beacon filtering in software since that means we can | |
2904 | * avoid processing the frame here and in cfg80211, and userspace | |
2905 | * will not be able to tell whether the hardware supports it or not. | |
2906 | * | |
2907 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2908 | * add items it requires. It also needs to be able to tell us to | |
2909 | * look out for other vendor IEs. | |
2910 | */ | |
2911 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2912 | (1ULL << WLAN_EID_COUNTRY) | |
2913 | (1ULL << WLAN_EID_ERP_INFO) | | |
2914 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2915 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2916 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2917 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2918 | |
8d61ffa5 JB |
2919 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
2920 | struct ieee80211_mgmt *mgmt, size_t len, | |
2921 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2922 | { |
d91f36db | 2923 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2924 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2925 | size_t baselen; |
2926 | struct ieee802_11_elems elems; | |
f698d856 | 2927 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2928 | struct ieee80211_chanctx_conf *chanctx_conf; |
2929 | struct ieee80211_channel *chan; | |
bee7f586 | 2930 | struct sta_info *sta; |
471b3efd | 2931 | u32 changed = 0; |
f87ad637 | 2932 | bool erp_valid; |
7a5158ef | 2933 | u8 erp_value = 0; |
d91f36db | 2934 | u32 ncrc; |
77fdaa12 | 2935 | u8 *bssid; |
8d61ffa5 | 2936 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 2937 | |
8d61ffa5 | 2938 | sdata_assert_lock(sdata); |
f0706e82 | 2939 | |
ae6a44e3 EK |
2940 | /* Process beacon from the current BSS */ |
2941 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2942 | if (baselen > len) | |
8d61ffa5 | 2943 | return; |
ae6a44e3 | 2944 | |
55de908a JB |
2945 | rcu_read_lock(); |
2946 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2947 | if (!chanctx_conf) { | |
2948 | rcu_read_unlock(); | |
8d61ffa5 | 2949 | return; |
55de908a JB |
2950 | } |
2951 | ||
4bf88530 | 2952 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 2953 | rcu_read_unlock(); |
8d61ffa5 | 2954 | return; |
55de908a | 2955 | } |
4bf88530 | 2956 | chan = chanctx_conf->def.chan; |
55de908a | 2957 | rcu_read_unlock(); |
f0706e82 | 2958 | |
c65dd147 | 2959 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2960 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 2961 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 2962 | len - baselen, false, &elems); |
77fdaa12 | 2963 | |
d45c4172 | 2964 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
2965 | if (elems.tim && !elems.parse_error) { |
2966 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
2967 | ifmgd->dtim_period = tim_ie->dtim_period; | |
2968 | } | |
989c6505 | 2969 | ifmgd->have_beacon = true; |
c65dd147 | 2970 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
2971 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
2972 | sdata->vif.bss_conf.sync_tsf = | |
2973 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2974 | sdata->vif.bss_conf.sync_device_ts = | |
2975 | rx_status->device_timestamp; | |
2976 | if (elems.tim) | |
2977 | sdata->vif.bss_conf.sync_dtim_count = | |
2978 | elems.tim->dtim_count; | |
2979 | else | |
2980 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
2981 | } | |
66e67e41 JB |
2982 | /* continue assoc process */ |
2983 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 2984 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
2985 | run_again(sdata, ifmgd->assoc_data->timeout); |
2986 | return; | |
66e67e41 | 2987 | } |
77fdaa12 | 2988 | |
66e67e41 | 2989 | if (!ifmgd->associated || |
b203ca39 | 2990 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2991 | return; |
66e67e41 | 2992 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2993 | |
17e4ec14 JM |
2994 | /* Track average RSSI from the Beacon frames of the current AP */ |
2995 | ifmgd->last_beacon_signal = rx_status->signal; | |
2996 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2997 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2998 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2999 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3000 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3001 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
3002 | } else { |
3003 | ifmgd->ave_beacon_signal = | |
3004 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
3005 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
3006 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 3007 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3008 | } |
615f7b9b MV |
3009 | |
3010 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
3011 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
3012 | int sig = ifmgd->ave_beacon_signal; | |
3013 | int last_sig = ifmgd->last_ave_beacon_signal; | |
3014 | ||
3015 | /* | |
3016 | * if signal crosses either of the boundaries, invoke callback | |
3017 | * with appropriate parameters | |
3018 | */ | |
3019 | if (sig > ifmgd->rssi_max_thold && | |
3020 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3021 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 3022 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
3023 | } else if (sig < ifmgd->rssi_min_thold && |
3024 | (last_sig >= ifmgd->rssi_max_thold || | |
3025 | last_sig == 0)) { | |
3026 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 3027 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
3028 | } |
3029 | } | |
3030 | ||
17e4ec14 | 3031 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3032 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3033 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
3034 | int sig = ifmgd->ave_beacon_signal / 16; |
3035 | int last_event = ifmgd->last_cqm_event_signal; | |
3036 | int thold = bss_conf->cqm_rssi_thold; | |
3037 | int hyst = bss_conf->cqm_rssi_hyst; | |
3038 | if (sig < thold && | |
3039 | (last_event == 0 || sig < last_event - hyst)) { | |
3040 | ifmgd->last_cqm_event_signal = sig; | |
3041 | ieee80211_cqm_rssi_notify( | |
3042 | &sdata->vif, | |
3043 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3044 | GFP_KERNEL); | |
3045 | } else if (sig > thold && | |
3046 | (last_event == 0 || sig > last_event + hyst)) { | |
3047 | ifmgd->last_cqm_event_signal = sig; | |
3048 | ieee80211_cqm_rssi_notify( | |
3049 | &sdata->vif, | |
3050 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3051 | GFP_KERNEL); | |
3052 | } | |
3053 | } | |
3054 | ||
392b9ffb | 3055 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3056 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3057 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3058 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3059 | } |
3060 | ||
b291ba11 JB |
3061 | /* |
3062 | * Push the beacon loss detection into the future since | |
3063 | * we are processing a beacon from the AP just now. | |
3064 | */ | |
d3a910a8 | 3065 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3066 | |
d91f36db JB |
3067 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3068 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3069 | len - baselen, false, &elems, |
d91f36db JB |
3070 | care_about_ies, ncrc); |
3071 | ||
25c9c875 | 3072 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
3073 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3074 | elems.tim_len, | |
3075 | ifmgd->aid); | |
1fb3606b | 3076 | if (directed_tim) { |
572e0012 | 3077 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3078 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3079 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3080 | ieee80211_hw_config(local, | |
3081 | IEEE80211_CONF_CHANGE_PS); | |
3082 | } | |
572e0012 | 3083 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3084 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3085 | local->pspolling = true; |
3086 | ||
3087 | /* | |
3088 | * Here is assumed that the driver will be | |
3089 | * able to send ps-poll frame and receive a | |
3090 | * response even though power save mode is | |
3091 | * enabled, but some drivers might require | |
3092 | * to disable power save here. This needs | |
3093 | * to be investigated. | |
3094 | */ | |
3095 | ieee80211_send_pspoll(local, sdata); | |
3096 | } | |
a97b77b9 VN |
3097 | } |
3098 | } | |
7a5158ef | 3099 | |
488dd7b5 | 3100 | if (sdata->vif.p2p) { |
67baf663 | 3101 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3102 | int ret; |
3103 | ||
3104 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3105 | len - baselen, | |
3106 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3107 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3108 | if (ret >= 2) { |
3109 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3110 | /* valid noa_attr and index changed */ | |
3111 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3112 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3113 | changed |= BSS_CHANGED_P2P_PS; | |
3114 | /* | |
3115 | * make sure we update all information, the CRC | |
3116 | * mechanism doesn't look at P2P attributes. | |
3117 | */ | |
3118 | ifmgd->beacon_crc_valid = false; | |
3119 | } | |
3120 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3121 | /* noa_attr not found and we had valid noa_attr before */ | |
3122 | sdata->u.mgd.p2p_noa_index = -1; | |
3123 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3124 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3125 | ifmgd->beacon_crc_valid = false; |
3126 | } | |
3127 | } | |
3128 | ||
d8ec4433 | 3129 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3130 | return; |
30196673 | 3131 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3132 | ifmgd->beacon_crc_valid = true; |
30196673 | 3133 | |
d45c4172 | 3134 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3135 | |
d70b7616 JB |
3136 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
3137 | &elems, true); | |
3138 | ||
095d81ce JB |
3139 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3140 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3141 | elems.wmm_param_len)) |
3142 | changed |= BSS_CHANGED_QOS; | |
3143 | ||
c65dd147 EG |
3144 | /* |
3145 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3146 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3147 | */ |
989c6505 | 3148 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3149 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3150 | if (elems.tim) | |
3151 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3152 | else | |
3153 | bss_conf->dtim_period = 1; | |
ef429dad JB |
3154 | |
3155 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
3156 | sdata->vif.bss_conf.sync_tsf = | |
3157 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3158 | sdata->vif.bss_conf.sync_device_ts = | |
3159 | rx_status->device_timestamp; | |
3160 | if (elems.tim) | |
3161 | sdata->vif.bss_conf.sync_dtim_count = | |
3162 | elems.tim->dtim_count; | |
3163 | else | |
3164 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3165 | } | |
3166 | ||
989c6505 AB |
3167 | changed |= BSS_CHANGED_BEACON_INFO; |
3168 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3169 | |
3170 | mutex_lock(&local->iflist_mtx); | |
3171 | ieee80211_recalc_ps(local, -1); | |
3172 | mutex_unlock(&local->iflist_mtx); | |
3173 | ||
ce857888 | 3174 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3175 | } |
3176 | ||
1946bed9 | 3177 | if (elems.erp_info) { |
7a5158ef JB |
3178 | erp_valid = true; |
3179 | erp_value = elems.erp_info[0]; | |
3180 | } else { | |
3181 | erp_valid = false; | |
50c4afb9 | 3182 | } |
7a5158ef JB |
3183 | changed |= ieee80211_handle_bss_capability(sdata, |
3184 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3185 | erp_valid, erp_value); | |
f0706e82 | 3186 | |
1128958d | 3187 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3188 | sta = sta_info_get(sdata, bssid); |
3189 | ||
53b954ee EP |
3190 | if (ieee80211_config_bw(sdata, sta, |
3191 | elems.ht_cap_elem, elems.ht_operation, | |
30eb1dc2 JB |
3192 | elems.vht_operation, bssid, &changed)) { |
3193 | mutex_unlock(&local->sta_mtx); | |
3194 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3195 | WLAN_REASON_DEAUTH_LEAVING, | |
3196 | true, deauth_buf); | |
6ff57cf8 JB |
3197 | cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, |
3198 | sizeof(deauth_buf)); | |
8d61ffa5 | 3199 | return; |
30eb1dc2 | 3200 | } |
bee7f586 JB |
3201 | |
3202 | if (sta && elems.opmode_notif) | |
3203 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3204 | rx_status->band, true); | |
1128958d | 3205 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3206 | |
04b7b2ff JB |
3207 | if (elems.country_elem && elems.pwr_constr_elem && |
3208 | mgmt->u.probe_resp.capab_info & | |
3209 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
3210 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
3211 | elems.country_elem, | |
3212 | elems.country_elem_len, | |
3213 | elems.pwr_constr_elem); | |
3f2355cb | 3214 | |
471b3efd | 3215 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3216 | } |
3217 | ||
1fa57d01 JB |
3218 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3219 | struct sk_buff *skb) | |
f0706e82 JB |
3220 | { |
3221 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3222 | struct ieee80211_mgmt *mgmt; |
3223 | u16 fc; | |
1b3a2e49 JB |
3224 | struct ieee802_11_elems elems; |
3225 | int ies_len; | |
f0706e82 | 3226 | |
f0706e82 JB |
3227 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3228 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3229 | fc = le16_to_cpu(mgmt->frame_control); | |
3230 | ||
8d61ffa5 | 3231 | sdata_lock(sdata); |
77fdaa12 | 3232 | |
66e67e41 JB |
3233 | switch (fc & IEEE80211_FCTL_STYPE) { |
3234 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3235 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3236 | break; |
3237 | case IEEE80211_STYPE_PROBE_RESP: | |
3238 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3239 | break; | |
3240 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3241 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3242 | break; |
3243 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3244 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3245 | break; |
3246 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3247 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3248 | break; |
3249 | case IEEE80211_STYPE_ASSOC_RESP: | |
3250 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3251 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3252 | break; |
3253 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3254 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3255 | ies_len = skb->len - |
3256 | offsetof(struct ieee80211_mgmt, | |
3257 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3258 | |
3259 | if (ies_len < 0) | |
3260 | break; | |
3261 | ||
3262 | ieee802_11_parse_elems( | |
3263 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3264 | ies_len, true, &elems); |
37799e52 JB |
3265 | |
3266 | if (elems.parse_error) | |
3267 | break; | |
3268 | ||
1b3a2e49 JB |
3269 | ieee80211_sta_process_chanswitch(sdata, |
3270 | rx_status->mactime, | |
04a161f4 | 3271 | &elems, false); |
1b3a2e49 JB |
3272 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3273 | ies_len = skb->len - | |
3274 | offsetof(struct ieee80211_mgmt, | |
3275 | u.action.u.ext_chan_switch.variable); | |
3276 | ||
3277 | if (ies_len < 0) | |
3278 | break; | |
3279 | ||
3280 | ieee802_11_parse_elems( | |
3281 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3282 | ies_len, true, &elems); |
1b3a2e49 JB |
3283 | |
3284 | if (elems.parse_error) | |
3285 | break; | |
3286 | ||
3287 | /* for the handling code pretend this was also an IE */ | |
3288 | elems.ext_chansw_ie = | |
3289 | &mgmt->u.action.u.ext_chan_switch.data; | |
3290 | ||
66e67e41 | 3291 | ieee80211_sta_process_chanswitch(sdata, |
37799e52 | 3292 | rx_status->mactime, |
04a161f4 | 3293 | &elems, false); |
77fdaa12 | 3294 | } |
37799e52 | 3295 | break; |
77fdaa12 | 3296 | } |
8d61ffa5 | 3297 | sdata_unlock(sdata); |
f0706e82 JB |
3298 | } |
3299 | ||
9c6bd790 | 3300 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3301 | { |
60f8b39c JB |
3302 | struct ieee80211_sub_if_data *sdata = |
3303 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3304 | |
9b7d72c1 | 3305 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3306 | } |
3307 | ||
04ac3c0e | 3308 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3309 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3310 | { |
6ae16775 | 3311 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3312 | |
37ad3888 | 3313 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3314 | tx, frame_buf); |
37ad3888 | 3315 | |
6ff57cf8 JB |
3316 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3317 | IEEE80211_DEAUTH_FRAME_LEN); | |
04ac3c0e FF |
3318 | } |
3319 | ||
66e67e41 JB |
3320 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3321 | { | |
3322 | struct ieee80211_local *local = sdata->local; | |
3323 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3324 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3325 | u32 tx_flags = 0; |
66e67e41 | 3326 | |
8d61ffa5 | 3327 | sdata_assert_lock(sdata); |
66e67e41 JB |
3328 | |
3329 | if (WARN_ON_ONCE(!auth_data)) | |
3330 | return -EINVAL; | |
3331 | ||
66e67e41 JB |
3332 | auth_data->tries++; |
3333 | ||
3334 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3335 | sdata_info(sdata, "authentication with %pM timed out\n", |
3336 | auth_data->bss->bssid); | |
66e67e41 JB |
3337 | |
3338 | /* | |
3339 | * Most likely AP is not in the range so remove the | |
3340 | * bss struct for that AP. | |
3341 | */ | |
3342 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3343 | ||
3344 | return -ETIMEDOUT; | |
3345 | } | |
3346 | ||
a1845fc7 JB |
3347 | drv_mgd_prepare_tx(local, sdata); |
3348 | ||
66e67e41 | 3349 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3350 | u16 trans = 1; |
3351 | u16 status = 0; | |
3352 | ||
bdcbd8e0 JB |
3353 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3354 | auth_data->bss->bssid, auth_data->tries, | |
3355 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3356 | |
3357 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3358 | |
3359 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3360 | trans = auth_data->sae_trans; | |
3361 | status = auth_data->sae_status; | |
3362 | auth_data->expected_transaction = trans; | |
3363 | } | |
3364 | ||
6211dd12 SG |
3365 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3366 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3367 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3368 | ||
6b8ece3a JM |
3369 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3370 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3371 | auth_data->bss->bssid, |
1672c0e3 JB |
3372 | auth_data->bss->bssid, NULL, 0, 0, |
3373 | tx_flags); | |
66e67e41 JB |
3374 | } else { |
3375 | const u8 *ssidie; | |
3376 | ||
bdcbd8e0 JB |
3377 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3378 | auth_data->bss->bssid, auth_data->tries, | |
3379 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3380 | |
9caf0364 | 3381 | rcu_read_lock(); |
66e67e41 | 3382 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3383 | if (!ssidie) { |
3384 | rcu_read_unlock(); | |
66e67e41 | 3385 | return -EINVAL; |
9caf0364 | 3386 | } |
66e67e41 JB |
3387 | /* |
3388 | * Direct probe is sent to broadcast address as some APs | |
3389 | * will not answer to direct packet in unassociated state. | |
3390 | */ | |
3391 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
6211dd12 | 3392 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3393 | auth_data->bss->channel, false); |
9caf0364 | 3394 | rcu_read_unlock(); |
66e67e41 JB |
3395 | } |
3396 | ||
6211dd12 | 3397 | if (tx_flags == 0) { |
1672c0e3 | 3398 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3399 | auth_data->timeout_started = true; |
8d61ffa5 | 3400 | run_again(sdata, auth_data->timeout); |
89afe614 | 3401 | } else { |
cb236d2d JB |
3402 | auth_data->timeout = |
3403 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3404 | auth_data->timeout_started = true; | |
3405 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3406 | } |
66e67e41 JB |
3407 | |
3408 | return 0; | |
3409 | } | |
3410 | ||
3411 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3412 | { | |
3413 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3414 | struct ieee80211_local *local = sdata->local; | |
3415 | ||
8d61ffa5 | 3416 | sdata_assert_lock(sdata); |
66e67e41 | 3417 | |
66e67e41 JB |
3418 | assoc_data->tries++; |
3419 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3420 | sdata_info(sdata, "association with %pM timed out\n", |
3421 | assoc_data->bss->bssid); | |
66e67e41 JB |
3422 | |
3423 | /* | |
3424 | * Most likely AP is not in the range so remove the | |
3425 | * bss struct for that AP. | |
3426 | */ | |
3427 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3428 | ||
3429 | return -ETIMEDOUT; | |
3430 | } | |
3431 | ||
bdcbd8e0 JB |
3432 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3433 | assoc_data->bss->bssid, assoc_data->tries, | |
3434 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3435 | ieee80211_send_assoc(sdata); |
3436 | ||
1672c0e3 JB |
3437 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3438 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3439 | assoc_data->timeout_started = true; |
8d61ffa5 | 3440 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3441 | } else { |
cb236d2d JB |
3442 | assoc_data->timeout = |
3443 | round_jiffies_up(jiffies + | |
3444 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3445 | assoc_data->timeout_started = true; | |
3446 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3447 | } |
66e67e41 JB |
3448 | |
3449 | return 0; | |
3450 | } | |
3451 | ||
1672c0e3 JB |
3452 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3453 | __le16 fc, bool acked) | |
3454 | { | |
3455 | struct ieee80211_local *local = sdata->local; | |
3456 | ||
3457 | sdata->u.mgd.status_fc = fc; | |
3458 | sdata->u.mgd.status_acked = acked; | |
3459 | sdata->u.mgd.status_received = true; | |
3460 | ||
3461 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3462 | } | |
3463 | ||
1fa57d01 | 3464 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3465 | { |
9c6bd790 | 3466 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3467 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3468 | |
8d61ffa5 | 3469 | sdata_lock(sdata); |
77fdaa12 | 3470 | |
1672c0e3 JB |
3471 | if (ifmgd->status_received) { |
3472 | __le16 fc = ifmgd->status_fc; | |
3473 | bool status_acked = ifmgd->status_acked; | |
3474 | ||
3475 | ifmgd->status_received = false; | |
3476 | if (ifmgd->auth_data && | |
3477 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3478 | if (status_acked) { | |
3479 | ifmgd->auth_data->timeout = | |
3480 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3481 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3482 | } else { |
3483 | ifmgd->auth_data->timeout = jiffies - 1; | |
3484 | } | |
89afe614 | 3485 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3486 | } else if (ifmgd->assoc_data && |
3487 | (ieee80211_is_assoc_req(fc) || | |
3488 | ieee80211_is_reassoc_req(fc))) { | |
3489 | if (status_acked) { | |
3490 | ifmgd->assoc_data->timeout = | |
3491 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3492 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3493 | } else { |
3494 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3495 | } | |
89afe614 | 3496 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3497 | } |
3498 | } | |
3499 | ||
89afe614 | 3500 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3501 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3502 | if (ifmgd->auth_data->done) { | |
3503 | /* | |
3504 | * ok ... we waited for assoc but userspace didn't, | |
3505 | * so let's just kill the auth data | |
3506 | */ | |
3507 | ieee80211_destroy_auth_data(sdata, false); | |
3508 | } else if (ieee80211_probe_auth(sdata)) { | |
3509 | u8 bssid[ETH_ALEN]; | |
3510 | ||
3511 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3512 | ||
3513 | ieee80211_destroy_auth_data(sdata, false); | |
3514 | ||
6ff57cf8 | 3515 | cfg80211_auth_timeout(sdata->dev, bssid); |
66e67e41 | 3516 | } |
89afe614 | 3517 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3518 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3519 | |
89afe614 | 3520 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3521 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3522 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3523 | ieee80211_do_assoc(sdata)) { |
959867fa | 3524 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
66e67e41 JB |
3525 | |
3526 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3527 | cfg80211_assoc_timeout(sdata->dev, bss); |
66e67e41 | 3528 | } |
89afe614 | 3529 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3530 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3531 | |
392b9ffb | 3532 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3533 | ifmgd->associated) { |
a43abf29 | 3534 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3535 | int max_tries; |
a43abf29 | 3536 | |
0c1ad2ca | 3537 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3538 | |
72a8a3ed | 3539 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3540 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3541 | else |
180205bd | 3542 | max_tries = max_probe_tries; |
72a8a3ed | 3543 | |
4e5ff376 FF |
3544 | /* ACK received for nullfunc probing frame */ |
3545 | if (!ifmgd->probe_send_count) | |
3546 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3547 | else if (ifmgd->nullfunc_failed) { |
3548 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3549 | mlme_dbg(sdata, |
3550 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3551 | bssid, ifmgd->probe_send_count, | |
3552 | max_tries); | |
04ac3c0e FF |
3553 | ieee80211_mgd_probe_ap_send(sdata); |
3554 | } else { | |
bdcbd8e0 JB |
3555 | mlme_dbg(sdata, |
3556 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3557 | bssid); | |
95acac61 | 3558 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3559 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3560 | false); | |
04ac3c0e FF |
3561 | } |
3562 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3563 | run_again(sdata, ifmgd->probe_timeout); |
04ac3c0e | 3564 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3565 | mlme_dbg(sdata, |
3566 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3567 | bssid, probe_wait_ms); | |
95acac61 | 3568 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3569 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3570 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3571 | mlme_dbg(sdata, |
3572 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3573 | bssid, probe_wait_ms, | |
3574 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3575 | ieee80211_mgd_probe_ap_send(sdata); |
3576 | } else { | |
b291ba11 JB |
3577 | /* |
3578 | * We actually lost the connection ... or did we? | |
3579 | * Let's make sure! | |
3580 | */ | |
b38afa87 BG |
3581 | wiphy_debug(local->hw.wiphy, |
3582 | "%s: No probe response from AP %pM" | |
3583 | " after %dms, disconnecting.\n", | |
3584 | sdata->name, | |
180205bd | 3585 | bssid, probe_wait_ms); |
04ac3c0e | 3586 | |
95acac61 | 3587 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3588 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3589 | } |
3590 | } | |
3591 | ||
8d61ffa5 | 3592 | sdata_unlock(sdata); |
f0706e82 JB |
3593 | } |
3594 | ||
b291ba11 JB |
3595 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3596 | { | |
3597 | struct ieee80211_sub_if_data *sdata = | |
3598 | (struct ieee80211_sub_if_data *) data; | |
3599 | struct ieee80211_local *local = sdata->local; | |
3600 | ||
3601 | if (local->quiescing) | |
3602 | return; | |
3603 | ||
e5593f56 MK |
3604 | if (sdata->vif.csa_active) |
3605 | return; | |
3606 | ||
682bd38b | 3607 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3608 | ieee80211_queue_work(&sdata->local->hw, |
3609 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3610 | } |
3611 | ||
3612 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3613 | { | |
3614 | struct ieee80211_sub_if_data *sdata = | |
3615 | (struct ieee80211_sub_if_data *) data; | |
3616 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3617 | struct ieee80211_local *local = sdata->local; | |
3618 | ||
3619 | if (local->quiescing) | |
3620 | return; | |
3621 | ||
e5593f56 MK |
3622 | if (sdata->vif.csa_active) |
3623 | return; | |
3624 | ||
42935eca | 3625 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3626 | } |
3627 | ||
3628 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3629 | { | |
3630 | struct ieee80211_sub_if_data *sdata = | |
3631 | container_of(work, struct ieee80211_sub_if_data, | |
3632 | u.mgd.monitor_work); | |
3633 | ||
3634 | ieee80211_mgd_probe_ap(sdata, false); | |
3635 | } | |
3636 | ||
9c6bd790 JB |
3637 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3638 | { | |
494f1fe5 EP |
3639 | u32 flags; |
3640 | ||
ad935687 | 3641 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3642 | __ieee80211_stop_poll(sdata); |
ad935687 | 3643 | |
b291ba11 | 3644 | /* let's probe the connection once */ |
494f1fe5 EP |
3645 | flags = sdata->local->hw.flags; |
3646 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3647 | ieee80211_queue_work(&sdata->local->hw, | |
3648 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3649 | /* and do all the other regular work too */ |
64592c8f | 3650 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3651 | } |
9c6bd790 | 3652 | } |
f0706e82 | 3653 | |
b8360ab8 | 3654 | #ifdef CONFIG_PM |
1a1cb744 JB |
3655 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
3656 | { | |
3657 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3658 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
3659 | ||
3660 | sdata_lock(sdata); | |
3661 | ||
c52666ae EG |
3662 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
3663 | const u8 *bssid = ifmgd->auth_data ? | |
3664 | ifmgd->auth_data->bss->bssid : | |
3665 | ifmgd->assoc_data->bss->bssid; | |
3666 | ||
1a1cb744 | 3667 | /* |
c52666ae EG |
3668 | * If we are trying to authenticate / associate while suspending, |
3669 | * cfg80211 won't know and won't actually abort those attempts, | |
3670 | * thus we need to do that ourselves. | |
1a1cb744 | 3671 | */ |
c52666ae | 3672 | ieee80211_send_deauth_disassoc(sdata, bssid, |
1a1cb744 JB |
3673 | IEEE80211_STYPE_DEAUTH, |
3674 | WLAN_REASON_DEAUTH_LEAVING, | |
3675 | false, frame_buf); | |
c52666ae EG |
3676 | if (ifmgd->assoc_data) |
3677 | ieee80211_destroy_assoc_data(sdata, false); | |
3678 | if (ifmgd->auth_data) | |
3679 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
3680 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3681 | IEEE80211_DEAUTH_FRAME_LEN); | |
3682 | } | |
3683 | ||
3684 | sdata_unlock(sdata); | |
3685 | } | |
3686 | ||
b8360ab8 JB |
3687 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
3688 | { | |
3689 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3690 | ||
8d61ffa5 | 3691 | sdata_lock(sdata); |
b8360ab8 | 3692 | if (!ifmgd->associated) { |
8d61ffa5 | 3693 | sdata_unlock(sdata); |
b8360ab8 JB |
3694 | return; |
3695 | } | |
3696 | ||
3697 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
3698 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
3699 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
3700 | ieee80211_sta_connection_lost(sdata, | |
3701 | ifmgd->associated->bssid, | |
3702 | WLAN_REASON_UNSPECIFIED, | |
3703 | true); | |
8d61ffa5 | 3704 | sdata_unlock(sdata); |
b8360ab8 JB |
3705 | return; |
3706 | } | |
8d61ffa5 | 3707 | sdata_unlock(sdata); |
b8360ab8 JB |
3708 | } |
3709 | #endif | |
3710 | ||
9c6bd790 JB |
3711 | /* interface setup */ |
3712 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3713 | { |
46900298 | 3714 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3715 | |
46900298 | 3716 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3717 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3718 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3719 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3720 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3721 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3722 | ieee80211_csa_connection_drop_work); | |
687da132 | 3723 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
3724 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
3725 | ieee80211_tdls_peer_del_work); | |
46900298 | 3726 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3727 | (unsigned long) sdata); |
b291ba11 JB |
3728 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3729 | (unsigned long) sdata); | |
3730 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3731 | (unsigned long) sdata); | |
46900298 | 3732 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3733 | (unsigned long) sdata); |
9c6bd790 | 3734 | |
ab1faead | 3735 | ifmgd->flags = 0; |
1478acb3 | 3736 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
3737 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
3738 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 3739 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 3740 | |
0f78231b JB |
3741 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) |
3742 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3743 | else | |
3744 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3745 | } |
3746 | ||
77fdaa12 JB |
3747 | /* scan finished notification */ |
3748 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3749 | { |
31ee67a1 | 3750 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3751 | |
77fdaa12 JB |
3752 | /* Restart STA timers */ |
3753 | rcu_read_lock(); | |
370bd005 BG |
3754 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
3755 | if (ieee80211_sdata_running(sdata)) | |
3756 | ieee80211_restart_sta_timer(sdata); | |
3757 | } | |
77fdaa12 JB |
3758 | rcu_read_unlock(); |
3759 | } | |
60f8b39c | 3760 | |
77fdaa12 JB |
3761 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3762 | unsigned long data, void *dummy) | |
3763 | { | |
3764 | s32 latency_usec = (s32) data; | |
3765 | struct ieee80211_local *local = | |
3766 | container_of(nb, struct ieee80211_local, | |
3767 | network_latency_notifier); | |
1fa6f4af | 3768 | |
77fdaa12 JB |
3769 | mutex_lock(&local->iflist_mtx); |
3770 | ieee80211_recalc_ps(local, latency_usec); | |
3771 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3772 | |
8bd811aa | 3773 | return NOTIFY_OK; |
9c6bd790 JB |
3774 | } |
3775 | ||
f2d9d270 JB |
3776 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
3777 | struct cfg80211_bss *cbss) | |
3778 | { | |
3779 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3780 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3781 | const struct ieee80211_ht_cap *ht_cap; | |
3782 | const struct ieee80211_vht_cap *vht_cap; | |
3783 | u8 chains = 1; | |
3784 | ||
3785 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3786 | return chains; | |
3787 | ||
9caf0364 | 3788 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3789 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3790 | ht_cap = (void *)(ht_cap_ie + 2); | |
3791 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3792 | /* | |
3793 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3794 | * "Tx Unequal Modulation Supported" fields. | |
3795 | */ | |
3796 | } | |
3797 | ||
3798 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3799 | return chains; | |
3800 | ||
9caf0364 | 3801 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3802 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3803 | u8 nss; | |
3804 | u16 tx_mcs_map; | |
3805 | ||
3806 | vht_cap = (void *)(vht_cap_ie + 2); | |
3807 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3808 | for (nss = 8; nss > 0; nss--) { | |
3809 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3810 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3811 | break; | |
3812 | } | |
3813 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3814 | chains = max(chains, nss); | |
3815 | } | |
3816 | ||
3817 | return chains; | |
3818 | } | |
3819 | ||
b17166a7 JB |
3820 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3821 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3822 | { |
3823 | struct ieee80211_local *local = sdata->local; | |
3824 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 3825 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 3826 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3827 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3828 | struct ieee80211_supported_band *sband; |
4bf88530 | 3829 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3830 | int ret; |
a1cf775d | 3831 | |
24398e39 JB |
3832 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3833 | ||
f2d9d270 JB |
3834 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3835 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3836 | IEEE80211_STA_DISABLE_160MHZ); | |
3837 | ||
9caf0364 JB |
3838 | rcu_read_lock(); |
3839 | ||
f2d9d270 JB |
3840 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3841 | sband->ht_cap.ht_supported) { | |
53b954ee | 3842 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 3843 | |
9caf0364 | 3844 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3845 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3846 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 3847 | |
53b954ee EP |
3848 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
3849 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
3850 | ht_cap = (void *)(ht_cap_ie + 2); | |
3851 | ||
3852 | if (!ht_cap) { | |
08e6effa JB |
3853 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3854 | ht_oper = NULL; | |
3855 | } | |
24398e39 JB |
3856 | } |
3857 | ||
f2d9d270 JB |
3858 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3859 | sband->vht_cap.vht_supported) { | |
08e6effa | 3860 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 3861 | |
9caf0364 JB |
3862 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3863 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3864 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3865 | vht_oper = (void *)(vht_oper_ie + 2); | |
3866 | if (vht_oper && !ht_oper) { | |
3867 | vht_oper = NULL; | |
bdcbd8e0 | 3868 | sdata_info(sdata, |
f2d9d270 | 3869 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
3870 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3871 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 3872 | } |
08e6effa JB |
3873 | |
3874 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
3875 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
3876 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
3877 | vht_oper = NULL; | |
3878 | } | |
24398e39 JB |
3879 | } |
3880 | ||
f2d9d270 JB |
3881 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3882 | cbss->channel, | |
53b954ee | 3883 | ht_cap, ht_oper, vht_oper, |
5cdaed1e | 3884 | &chandef, false); |
04ecd257 | 3885 | |
f2d9d270 JB |
3886 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3887 | local->rx_chains); | |
24398e39 | 3888 | |
9caf0364 JB |
3889 | rcu_read_unlock(); |
3890 | ||
04ecd257 JB |
3891 | /* will change later if needed */ |
3892 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3893 | ||
34a3740d | 3894 | mutex_lock(&local->mtx); |
f2d9d270 JB |
3895 | /* |
3896 | * If this fails (possibly due to channel context sharing | |
3897 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3898 | * same control channel) try to use a smaller bandwidth. | |
3899 | */ | |
3900 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3901 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
3902 | |
3903 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
3904 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
3905 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 3906 | goto out; |
0418a445 | 3907 | |
d601cd8d | 3908 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 3909 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
3910 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
3911 | IEEE80211_CHANCTX_SHARED); | |
3912 | } | |
34a3740d JB |
3913 | out: |
3914 | mutex_unlock(&local->mtx); | |
f2d9d270 | 3915 | return ret; |
b17166a7 JB |
3916 | } |
3917 | ||
3918 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3919 | struct cfg80211_bss *cbss, bool assoc) | |
3920 | { | |
3921 | struct ieee80211_local *local = sdata->local; | |
3922 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3923 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3924 | struct sta_info *new_sta = NULL; | |
3925 | bool have_sta = false; | |
3926 | int err; | |
3927 | ||
3928 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3929 | return -EINVAL; | |
3930 | ||
3931 | if (assoc) { | |
3932 | rcu_read_lock(); | |
3933 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3934 | rcu_read_unlock(); | |
3935 | } | |
3936 | ||
3937 | if (!have_sta) { | |
3938 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3939 | if (!new_sta) | |
3940 | return -ENOMEM; | |
3941 | } | |
13e0c8e3 | 3942 | if (new_sta) { |
5d6a1b06 JB |
3943 | u32 rates = 0, basic_rates = 0; |
3944 | bool have_higher_than_11mbit; | |
3945 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 3946 | struct ieee80211_chanctx_conf *chanctx_conf; |
b17166a7 | 3947 | struct ieee80211_supported_band *sband; |
8cef2c9d | 3948 | const struct cfg80211_bss_ies *ies; |
2103dec1 SW |
3949 | int shift; |
3950 | u32 rate_flags; | |
b17166a7 JB |
3951 | |
3952 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3953 | ||
3954 | err = ieee80211_prep_channel(sdata, cbss); | |
3955 | if (err) { | |
3956 | sta_info_free(local, new_sta); | |
2103dec1 | 3957 | return -EINVAL; |
b17166a7 | 3958 | } |
2103dec1 SW |
3959 | shift = ieee80211_vif_get_shift(&sdata->vif); |
3960 | ||
3961 | rcu_read_lock(); | |
3962 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3963 | if (WARN_ON(!chanctx_conf)) { | |
3964 | rcu_read_unlock(); | |
c368ddaa | 3965 | sta_info_free(local, new_sta); |
2103dec1 SW |
3966 | return -EINVAL; |
3967 | } | |
3968 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
3969 | rcu_read_unlock(); | |
5d6a1b06 | 3970 | |
5d6a1b06 JB |
3971 | ieee80211_get_rates(sband, bss->supp_rates, |
3972 | bss->supp_rates_len, | |
3973 | &rates, &basic_rates, | |
3974 | &have_higher_than_11mbit, | |
2103dec1 SW |
3975 | &min_rate, &min_rate_index, |
3976 | shift, rate_flags); | |
5d6a1b06 JB |
3977 | |
3978 | /* | |
3979 | * This used to be a workaround for basic rates missing | |
3980 | * in the association response frame. Now that we no | |
3981 | * longer use the basic rates from there, it probably | |
3982 | * doesn't happen any more, but keep the workaround so | |
3983 | * in case some *other* APs are buggy in different ways | |
3984 | * we can connect -- with a warning. | |
3985 | */ | |
3986 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3987 | sdata_info(sdata, |
3988 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3989 | basic_rates = BIT(min_rate_index); |
3990 | } | |
3991 | ||
13e0c8e3 | 3992 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3993 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3994 | ||
3995 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3996 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3997 | have_higher_than_11mbit) |
3998 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3999 | else | |
4000 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
4001 | ||
4002 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
4003 | ||
8c358bcd JB |
4004 | /* set timing information */ |
4005 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 4006 | rcu_read_lock(); |
ef429dad JB |
4007 | ies = rcu_dereference(cbss->beacon_ies); |
4008 | if (ies) { | |
4009 | const u8 *tim_ie; | |
4010 | ||
4011 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4012 | sdata->vif.bss_conf.sync_device_ts = | |
4013 | bss->device_ts_beacon; | |
4014 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4015 | ies->data, ies->len); | |
4016 | if (tim_ie && tim_ie[1] >= 2) | |
4017 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
4018 | else | |
4019 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4020 | } else if (!(local->hw.flags & | |
4021 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
4022 | ies = rcu_dereference(cbss->proberesp_ies); | |
4023 | /* must be non-NULL since beacon IEs were NULL */ | |
4024 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4025 | sdata->vif.bss_conf.sync_device_ts = | |
4026 | bss->device_ts_presp; | |
4027 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4028 | } else { | |
4029 | sdata->vif.bss_conf.sync_tsf = 0; | |
4030 | sdata->vif.bss_conf.sync_device_ts = 0; | |
4031 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4032 | } | |
8cef2c9d | 4033 | rcu_read_unlock(); |
8c358bcd JB |
4034 | |
4035 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 4036 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
4037 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
4038 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
4039 | |
4040 | if (assoc) | |
13e0c8e3 | 4041 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 4042 | |
13e0c8e3 JB |
4043 | err = sta_info_insert(new_sta); |
4044 | new_sta = NULL; | |
a1cf775d | 4045 | if (err) { |
bdcbd8e0 JB |
4046 | sdata_info(sdata, |
4047 | "failed to insert STA entry for the AP (error %d)\n", | |
4048 | err); | |
a1cf775d JB |
4049 | return err; |
4050 | } | |
4051 | } else | |
b203ca39 | 4052 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
4053 | |
4054 | return 0; | |
4055 | } | |
4056 | ||
77fdaa12 JB |
4057 | /* config hooks */ |
4058 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
4059 | struct cfg80211_auth_request *req) | |
9c6bd790 | 4060 | { |
66e67e41 JB |
4061 | struct ieee80211_local *local = sdata->local; |
4062 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4063 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 4064 | u16 auth_alg; |
66e67e41 JB |
4065 | int err; |
4066 | ||
4067 | /* prepare auth data structure */ | |
9c6bd790 | 4068 | |
77fdaa12 JB |
4069 | switch (req->auth_type) { |
4070 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4071 | auth_alg = WLAN_AUTH_OPEN; | |
4072 | break; | |
4073 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4074 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4075 | return -EOPNOTSUPP; |
77fdaa12 JB |
4076 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4077 | break; | |
4078 | case NL80211_AUTHTYPE_FT: | |
4079 | auth_alg = WLAN_AUTH_FT; | |
4080 | break; | |
4081 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4082 | auth_alg = WLAN_AUTH_LEAP; | |
4083 | break; | |
6b8ece3a JM |
4084 | case NL80211_AUTHTYPE_SAE: |
4085 | auth_alg = WLAN_AUTH_SAE; | |
4086 | break; | |
77fdaa12 JB |
4087 | default: |
4088 | return -EOPNOTSUPP; | |
60f8b39c | 4089 | } |
77fdaa12 | 4090 | |
6b8ece3a JM |
4091 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4092 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4093 | if (!auth_data) |
9c6bd790 | 4094 | return -ENOMEM; |
77fdaa12 | 4095 | |
66e67e41 | 4096 | auth_data->bss = req->bss; |
77fdaa12 | 4097 | |
6b8ece3a JM |
4098 | if (req->sae_data_len >= 4) { |
4099 | __le16 *pos = (__le16 *) req->sae_data; | |
4100 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4101 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4102 | memcpy(auth_data->data, req->sae_data + 4, | |
4103 | req->sae_data_len - 4); | |
4104 | auth_data->data_len += req->sae_data_len - 4; | |
4105 | } | |
4106 | ||
77fdaa12 | 4107 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4108 | memcpy(&auth_data->data[auth_data->data_len], |
4109 | req->ie, req->ie_len); | |
4110 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4111 | } |
77fdaa12 | 4112 | |
fffd0934 | 4113 | if (req->key && req->key_len) { |
66e67e41 JB |
4114 | auth_data->key_len = req->key_len; |
4115 | auth_data->key_idx = req->key_idx; | |
4116 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4117 | } |
4118 | ||
66e67e41 | 4119 | auth_data->algorithm = auth_alg; |
60f8b39c | 4120 | |
66e67e41 | 4121 | /* try to authenticate/probe */ |
2a33bee2 | 4122 | |
66e67e41 JB |
4123 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4124 | ifmgd->assoc_data) { | |
4125 | err = -EBUSY; | |
4126 | goto err_free; | |
2a33bee2 GE |
4127 | } |
4128 | ||
66e67e41 JB |
4129 | if (ifmgd->auth_data) |
4130 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4131 | |
66e67e41 JB |
4132 | /* prep auth_data so we don't go into idle on disassoc */ |
4133 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4134 | |
7b119dc0 JB |
4135 | if (ifmgd->associated) { |
4136 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4137 | ||
4138 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4139 | WLAN_REASON_UNSPECIFIED, | |
4140 | false, frame_buf); | |
4141 | ||
6ff57cf8 JB |
4142 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4143 | sizeof(frame_buf)); | |
7b119dc0 | 4144 | } |
af6b6374 | 4145 | |
bdcbd8e0 | 4146 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4147 | |
a1cf775d JB |
4148 | err = ieee80211_prep_connection(sdata, req->bss, false); |
4149 | if (err) | |
66e67e41 | 4150 | goto err_clear; |
af6b6374 | 4151 | |
66e67e41 JB |
4152 | err = ieee80211_probe_auth(sdata); |
4153 | if (err) { | |
66e67e41 JB |
4154 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4155 | goto err_clear; | |
4156 | } | |
4157 | ||
4158 | /* hold our own reference */ | |
5b112d3d | 4159 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4160 | return 0; |
66e67e41 JB |
4161 | |
4162 | err_clear: | |
3d2abdfd EP |
4163 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4164 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4165 | ifmgd->auth_data = NULL; |
4166 | err_free: | |
4167 | kfree(auth_data); | |
66e67e41 | 4168 | return err; |
af6b6374 JB |
4169 | } |
4170 | ||
095d81ce JB |
4171 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
4172 | const u8 *wmm_param, int len) | |
4173 | { | |
4174 | const u8 *pos; | |
4175 | size_t left; | |
4176 | ||
4177 | if (len < 8) | |
4178 | return false; | |
4179 | ||
4180 | if (wmm_param[5] != 1 /* version */) | |
4181 | return false; | |
4182 | ||
4183 | pos = wmm_param + 8; | |
4184 | left = len - 8; | |
4185 | ||
4186 | for (; left >= 4; left -= 4, pos += 4) { | |
4187 | u8 aifsn = pos[0] & 0x0f; | |
4188 | u8 ecwmin = pos[1] & 0x0f; | |
4189 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
4190 | int aci = (pos[0] >> 5) & 0x03; | |
4191 | ||
4192 | if (aifsn < 2) { | |
4193 | sdata_info(sdata, | |
4194 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
4195 | aifsn, aci); | |
4196 | return false; | |
4197 | } | |
4198 | if (ecwmin > ecwmax) { | |
4199 | sdata_info(sdata, | |
4200 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
4201 | ecwmin, ecwmax, aci); | |
4202 | return false; | |
4203 | } | |
4204 | } | |
4205 | ||
4206 | return true; | |
4207 | } | |
4208 | ||
77fdaa12 JB |
4209 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4210 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4211 | { |
66e67e41 | 4212 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4213 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4214 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4215 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4216 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4217 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4218 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4219 | int i, err; |
f0706e82 | 4220 | |
66e67e41 JB |
4221 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4222 | if (!assoc_data) | |
4223 | return -ENOMEM; | |
4224 | ||
9caf0364 JB |
4225 | rcu_read_lock(); |
4226 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4227 | if (!ssidie) { | |
4228 | rcu_read_unlock(); | |
4229 | kfree(assoc_data); | |
4230 | return -EINVAL; | |
4231 | } | |
4232 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4233 | assoc_data->ssid_len = ssidie[1]; | |
4234 | rcu_read_unlock(); | |
4235 | ||
7b119dc0 JB |
4236 | if (ifmgd->associated) { |
4237 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4238 | ||
4239 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4240 | WLAN_REASON_UNSPECIFIED, | |
4241 | false, frame_buf); | |
4242 | ||
6ff57cf8 JB |
4243 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4244 | sizeof(frame_buf)); | |
7b119dc0 | 4245 | } |
66e67e41 JB |
4246 | |
4247 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4248 | err = -EBUSY; | |
4249 | goto err_free; | |
af6b6374 | 4250 | } |
77fdaa12 | 4251 | |
66e67e41 JB |
4252 | if (ifmgd->assoc_data) { |
4253 | err = -EBUSY; | |
4254 | goto err_free; | |
4255 | } | |
77fdaa12 | 4256 | |
66e67e41 JB |
4257 | if (ifmgd->auth_data) { |
4258 | bool match; | |
4259 | ||
4260 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4261 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4262 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4263 | } |
4264 | ||
66e67e41 | 4265 | /* prepare assoc data */ |
095d81ce | 4266 | |
d8ec4433 JO |
4267 | ifmgd->beacon_crc_valid = false; |
4268 | ||
095d81ce JB |
4269 | assoc_data->wmm = bss->wmm_used && |
4270 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4271 | if (assoc_data->wmm) { | |
4272 | /* try to check validity of WMM params IE */ | |
4273 | const struct cfg80211_bss_ies *ies; | |
4274 | const u8 *wp, *start, *end; | |
4275 | ||
4276 | rcu_read_lock(); | |
4277 | ies = rcu_dereference(req->bss->ies); | |
4278 | start = ies->data; | |
4279 | end = start + ies->len; | |
4280 | ||
4281 | while (true) { | |
4282 | wp = cfg80211_find_vendor_ie( | |
4283 | WLAN_OUI_MICROSOFT, | |
4284 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4285 | start, end - start); | |
4286 | if (!wp) | |
4287 | break; | |
4288 | start = wp + wp[1] + 2; | |
4289 | /* if this IE is too short, try the next */ | |
4290 | if (wp[1] <= 4) | |
4291 | continue; | |
4292 | /* if this IE is WMM params, we found what we wanted */ | |
4293 | if (wp[6] == 1) | |
4294 | break; | |
4295 | } | |
4296 | ||
4297 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4298 | wp[1] - 2)) { | |
4299 | assoc_data->wmm = false; | |
4300 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4301 | } | |
4302 | rcu_read_unlock(); | |
4303 | } | |
4304 | ||
de5036aa JB |
4305 | /* |
4306 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4307 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4308 | * ciphers is configured as pairwise. | |
4309 | * We can set this to true for non-11n hardware, that'll be checked | |
4310 | * separately along with the peer capabilities. | |
4311 | */ | |
1c4cb928 | 4312 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4313 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4314 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4315 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4316 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4317 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4318 | netdev_info(sdata->dev, |
d545daba | 4319 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4320 | } |
4321 | } | |
77fdaa12 | 4322 | |
d545daba | 4323 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4324 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4325 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4326 | } | |
ef96a842 | 4327 | |
dd5ecfea JB |
4328 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4329 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4330 | ||
4e74bfdb JB |
4331 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4332 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4333 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4334 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4335 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4336 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4337 | if (!bss->wmm_used && |
4338 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4339 | netdev_info(sdata->dev, |
4340 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4341 | } |
4e74bfdb | 4342 | |
d545daba MP |
4343 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4344 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4345 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4346 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4347 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4348 | if (!bss->wmm_used && |
4349 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4350 | netdev_info(sdata->dev, |
4351 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4352 | } |
4353 | ||
ef96a842 BG |
4354 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4355 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4356 | sizeof(ifmgd->ht_capa_mask)); | |
4357 | ||
dd5ecfea JB |
4358 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4359 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4360 | sizeof(ifmgd->vht_capa_mask)); | |
4361 | ||
77fdaa12 | 4362 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4363 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4364 | assoc_data->ie_len = req->ie_len; | |
4365 | } | |
f679f65d | 4366 | |
66e67e41 | 4367 | assoc_data->bss = req->bss; |
f679f65d | 4368 | |
af6b6374 JB |
4369 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4370 | if (ifmgd->powersave) | |
04ecd257 | 4371 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4372 | else |
04ecd257 | 4373 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4374 | } else |
04ecd257 | 4375 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4376 | |
66e67e41 | 4377 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4378 | assoc_data->supp_rates = bss->supp_rates; |
4379 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4380 | |
9caf0364 | 4381 | rcu_read_lock(); |
9dde6423 JB |
4382 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4383 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4384 | assoc_data->ap_ht_param = | |
4385 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4386 | else | |
a8243b72 | 4387 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4388 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4389 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4390 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4391 | sizeof(struct ieee80211_vht_cap)); | |
4392 | else | |
4393 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4394 | rcu_read_unlock(); |
63f170e0 | 4395 | |
ab13315a | 4396 | if (bss->wmm_used && bss->uapsd_supported && |
24aa11ab AB |
4397 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) && |
4398 | sdata->wmm_acm != 0xff) { | |
76f0303d | 4399 | assoc_data->uapsd = true; |
ab13315a KV |
4400 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4401 | } else { | |
76f0303d | 4402 | assoc_data->uapsd = false; |
ab13315a KV |
4403 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4404 | } | |
4405 | ||
77fdaa12 | 4406 | if (req->prev_bssid) |
66e67e41 | 4407 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4408 | |
4409 | if (req->use_mfp) { | |
4410 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4411 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4412 | } else { | |
4413 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4414 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4415 | } | |
4416 | ||
cd2f5dd7 AK |
4417 | if (req->flags & ASSOC_REQ_USE_RRM) |
4418 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
4419 | else | |
4420 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
4421 | ||
77fdaa12 JB |
4422 | if (req->crypto.control_port) |
4423 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4424 | else | |
4425 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4426 | ||
a621fa4d JB |
4427 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4428 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4429 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4430 | sdata->vif.type); | |
a621fa4d | 4431 | |
66e67e41 JB |
4432 | /* kick off associate process */ |
4433 | ||
4434 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4435 | ifmgd->dtim_period = 0; |
989c6505 | 4436 | ifmgd->have_beacon = false; |
66e67e41 | 4437 | |
a1cf775d JB |
4438 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4439 | if (err) | |
4440 | goto err_clear; | |
66e67e41 | 4441 | |
c65dd147 EG |
4442 | rcu_read_lock(); |
4443 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4444 | |
c65dd147 EG |
4445 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4446 | !beacon_ies) { | |
4447 | /* | |
4448 | * Wait up to one beacon interval ... | |
4449 | * should this be more if we miss one? | |
4450 | */ | |
4451 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4452 | ifmgd->bssid); | |
4453 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4454 | assoc_data->timeout_started = true; |
c65dd147 EG |
4455 | assoc_data->need_beacon = true; |
4456 | } else if (beacon_ies) { | |
4457 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4458 | beacon_ies->data, | |
4459 | beacon_ies->len); | |
ef429dad JB |
4460 | u8 dtim_count = 0; |
4461 | ||
c65dd147 EG |
4462 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4463 | const struct ieee80211_tim_ie *tim; | |
4464 | tim = (void *)(tim_ie + 2); | |
4465 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4466 | dtim_count = tim->dtim_count; |
826262c3 | 4467 | } |
989c6505 | 4468 | ifmgd->have_beacon = true; |
66e67e41 | 4469 | assoc_data->timeout = jiffies; |
89afe614 | 4470 | assoc_data->timeout_started = true; |
ef429dad JB |
4471 | |
4472 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4473 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4474 | sdata->vif.bss_conf.sync_device_ts = | |
4475 | bss->device_ts_beacon; | |
4476 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4477 | } | |
c65dd147 EG |
4478 | } else { |
4479 | assoc_data->timeout = jiffies; | |
89afe614 | 4480 | assoc_data->timeout_started = true; |
66e67e41 | 4481 | } |
c65dd147 EG |
4482 | rcu_read_unlock(); |
4483 | ||
8d61ffa5 | 4484 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4485 | |
fcff4f10 PS |
4486 | if (bss->corrupt_data) { |
4487 | char *corrupt_type = "data"; | |
4488 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4489 | if (bss->corrupt_data & | |
4490 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4491 | corrupt_type = "beacon and probe response"; | |
4492 | else | |
4493 | corrupt_type = "beacon"; | |
4494 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4495 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4496 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4497 | corrupt_type); | |
fcff4f10 PS |
4498 | } |
4499 | ||
8d61ffa5 | 4500 | return 0; |
66e67e41 | 4501 | err_clear: |
3d2abdfd EP |
4502 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4503 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4504 | ifmgd->assoc_data = NULL; |
4505 | err_free: | |
4506 | kfree(assoc_data); | |
66e67e41 | 4507 | return err; |
f0706e82 JB |
4508 | } |
4509 | ||
77fdaa12 | 4510 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4511 | struct cfg80211_deauth_request *req) |
f0706e82 | 4512 | { |
46900298 | 4513 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4514 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4515 | bool tx = !req->local_state_change; |
f0706e82 | 4516 | |
c9c3a060 JB |
4517 | if (ifmgd->auth_data && |
4518 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4519 | sdata_info(sdata, | |
4520 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4521 | req->bssid, req->reason_code, | |
4522 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4523 | |
8c7d857c | 4524 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4525 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4526 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4527 | req->reason_code, tx, |
37ad3888 | 4528 | frame_buf); |
86552017 | 4529 | ieee80211_destroy_auth_data(sdata, false); |
c9c3a060 JB |
4530 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4531 | IEEE80211_DEAUTH_FRAME_LEN); | |
86552017 | 4532 | |
c9c3a060 | 4533 | return 0; |
8c7d857c EG |
4534 | } |
4535 | ||
86552017 JB |
4536 | if (ifmgd->associated && |
4537 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
4538 | sdata_info(sdata, |
4539 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
4540 | req->bssid, req->reason_code, | |
4541 | ieee80211_get_reason_code_string(req->reason_code)); | |
4542 | ||
86552017 JB |
4543 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4544 | req->reason_code, tx, frame_buf); | |
6ff57cf8 JB |
4545 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4546 | IEEE80211_DEAUTH_FRAME_LEN); | |
c9c3a060 JB |
4547 | return 0; |
4548 | } | |
86552017 | 4549 | |
c9c3a060 | 4550 | return -ENOTCONN; |
f0706e82 | 4551 | } |
84363e6e | 4552 | |
77fdaa12 | 4553 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4554 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4555 | { |
77fdaa12 | 4556 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4557 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4558 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4559 | |
8d8b261a JB |
4560 | /* |
4561 | * cfg80211 should catch this ... but it's racy since | |
4562 | * we can receive a disassoc frame, process it, hand it | |
4563 | * to cfg80211 while that's in a locked section already | |
4564 | * trying to tell us that the user wants to disconnect. | |
4565 | */ | |
8d61ffa5 | 4566 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4567 | return -ENOLINK; |
77fdaa12 | 4568 | |
bdcbd8e0 | 4569 | sdata_info(sdata, |
dfa1ad29 CO |
4570 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
4571 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4572 | |
e69e95db | 4573 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4574 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4575 | req->reason_code, !req->local_state_change, | |
4576 | frame_buf); | |
10f644a4 | 4577 | |
6ff57cf8 JB |
4578 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4579 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4580 | |
10f644a4 JB |
4581 | return 0; |
4582 | } | |
026331c4 | 4583 | |
afa762f6 | 4584 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4585 | { |
4586 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4587 | ||
49921859 BG |
4588 | /* |
4589 | * Make sure some work items will not run after this, | |
4590 | * they will not do anything but might not have been | |
4591 | * cancelled when disconnecting. | |
4592 | */ | |
4593 | cancel_work_sync(&ifmgd->monitor_work); | |
4594 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4595 | cancel_work_sync(&ifmgd->request_smps_work); | |
4596 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4597 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 4598 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 4599 | |
8d61ffa5 | 4600 | sdata_lock(sdata); |
959867fa JB |
4601 | if (ifmgd->assoc_data) { |
4602 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 4603 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
4604 | cfg80211_assoc_timeout(sdata->dev, bss); |
4605 | } | |
54e4ffb2 JB |
4606 | if (ifmgd->auth_data) |
4607 | ieee80211_destroy_auth_data(sdata, false); | |
4608 | del_timer_sync(&ifmgd->timer); | |
8d61ffa5 | 4609 | sdata_unlock(sdata); |
54e4ffb2 JB |
4610 | } |
4611 | ||
a97c13c3 JO |
4612 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4613 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4614 | gfp_t gfp) | |
4615 | { | |
4616 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4617 | ||
b5878a2d JB |
4618 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4619 | ||
a97c13c3 JO |
4620 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4621 | } | |
4622 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |