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> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
f0706e82 JB |
15 | #include <linux/if_ether.h> |
16 | #include <linux/skbuff.h> | |
f0706e82 | 17 | #include <linux/if_arp.h> |
f0706e82 | 18 | #include <linux/etherdevice.h> |
d9b93842 | 19 | #include <linux/moduleparam.h> |
d0709a65 | 20 | #include <linux/rtnetlink.h> |
e8db0be1 | 21 | #include <linux/pm_qos.h> |
d91f36db | 22 | #include <linux/crc32.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
bc3b2d7f | 24 | #include <linux/export.h> |
f0706e82 | 25 | #include <net/mac80211.h> |
472dbc45 | 26 | #include <asm/unaligned.h> |
60f8b39c | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 JB |
30 | #include "rate.h" |
31 | #include "led.h" | |
f0706e82 | 32 | |
1672c0e3 JB |
33 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
34 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) | |
35 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
36 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
37 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) | |
39 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 40 | |
180205bd BG |
41 | static int max_nullfunc_tries = 2; |
42 | module_param(max_nullfunc_tries, int, 0644); | |
43 | MODULE_PARM_DESC(max_nullfunc_tries, | |
44 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
45 | ||
46 | static int max_probe_tries = 5; | |
47 | module_param(max_probe_tries, int, 0644); | |
48 | MODULE_PARM_DESC(max_probe_tries, | |
49 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
50 | |
51 | /* | |
7ccc8bd7 FF |
52 | * Beacon loss timeout is calculated as N frames times the |
53 | * advertised beacon interval. This may need to be somewhat | |
54 | * higher than what hardware might detect to account for | |
55 | * delays in the host processing frames. But since we also | |
56 | * probe on beacon miss before declaring the connection lost | |
57 | * default to what we want. | |
b291ba11 | 58 | */ |
59c1ec2b BG |
59 | static int beacon_loss_count = 7; |
60 | module_param(beacon_loss_count, int, 0644); | |
61 | MODULE_PARM_DESC(beacon_loss_count, | |
62 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 63 | |
b291ba11 JB |
64 | /* |
65 | * Time the connection can be idle before we probe | |
66 | * it to see if we can still talk to the AP. | |
67 | */ | |
d1c5091f | 68 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
69 | /* |
70 | * Time we wait for a probe response after sending | |
71 | * a probe request because of beacon loss or for | |
72 | * checking the connection still works. | |
73 | */ | |
180205bd BG |
74 | static int probe_wait_ms = 500; |
75 | module_param(probe_wait_ms, int, 0644); | |
76 | MODULE_PARM_DESC(probe_wait_ms, | |
77 | "Maximum time(ms) to wait for probe response" | |
78 | " before disconnecting (reason 4)."); | |
f0706e82 | 79 | |
17e4ec14 JM |
80 | /* |
81 | * Weight given to the latest Beacon frame when calculating average signal | |
82 | * strength for Beacon frames received in the current BSS. This must be | |
83 | * between 1 and 15. | |
84 | */ | |
85 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
86 | ||
391a200a JM |
87 | /* |
88 | * How many Beacon frames need to have been used in average signal strength | |
89 | * before starting to indicate signal change events. | |
90 | */ | |
91 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
92 | ||
ca386f31 JB |
93 | /* |
94 | * We can have multiple work items (and connection probing) | |
95 | * scheduling this timer, but we need to take care to only | |
96 | * reschedule it when it should fire _earlier_ than it was | |
97 | * asked for before, or if it's not pending right now. This | |
98 | * function ensures that. Note that it then is required to | |
99 | * run this function for all timeouts after the first one | |
100 | * has happened -- the work that runs from this timer will | |
101 | * do that. | |
102 | */ | |
8d61ffa5 JB |
103 | static void run_again(struct ieee80211_sub_if_data *sdata, |
104 | unsigned long timeout) | |
ca386f31 | 105 | { |
8d61ffa5 | 106 | sdata_assert_lock(sdata); |
ca386f31 | 107 | |
8d61ffa5 JB |
108 | if (!timer_pending(&sdata->u.mgd.timer) || |
109 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
110 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
111 | } |
112 | ||
d3a910a8 | 113 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 114 | { |
c1288b12 | 115 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
116 | return; |
117 | ||
7eeff74c JB |
118 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
119 | return; | |
120 | ||
b291ba11 | 121 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 122 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
123 | } |
124 | ||
be099e82 LR |
125 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
126 | { | |
0c699c3a LR |
127 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
128 | ||
8628172f SG |
129 | if (unlikely(!sdata->u.mgd.associated)) |
130 | return; | |
131 | ||
be099e82 LR |
132 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
133 | return; | |
134 | ||
135 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
136 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
0c699c3a LR |
137 | |
138 | ifmgd->probe_send_count = 0; | |
be099e82 LR |
139 | } |
140 | ||
5484e237 | 141 | static int ecw2cw(int ecw) |
60f8b39c | 142 | { |
5484e237 | 143 | return (1 << ecw) - 1; |
60f8b39c JB |
144 | } |
145 | ||
6565ec9b JB |
146 | static u32 chandef_downgrade(struct cfg80211_chan_def *c) |
147 | { | |
148 | u32 ret; | |
149 | int tmp; | |
150 | ||
151 | switch (c->width) { | |
152 | case NL80211_CHAN_WIDTH_20: | |
153 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
154 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
155 | break; | |
156 | case NL80211_CHAN_WIDTH_40: | |
157 | c->width = NL80211_CHAN_WIDTH_20; | |
158 | c->center_freq1 = c->chan->center_freq; | |
159 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
160 | IEEE80211_STA_DISABLE_VHT; | |
161 | break; | |
162 | case NL80211_CHAN_WIDTH_80: | |
163 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
164 | /* n_P40 */ | |
165 | tmp /= 2; | |
166 | /* freq_P40 */ | |
167 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
168 | c->width = NL80211_CHAN_WIDTH_40; | |
169 | ret = IEEE80211_STA_DISABLE_VHT; | |
170 | break; | |
171 | case NL80211_CHAN_WIDTH_80P80: | |
172 | c->center_freq2 = 0; | |
173 | c->width = NL80211_CHAN_WIDTH_80; | |
174 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
175 | IEEE80211_STA_DISABLE_160MHZ; | |
176 | break; | |
177 | case NL80211_CHAN_WIDTH_160: | |
178 | /* n_P20 */ | |
179 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
180 | /* n_P80 */ | |
181 | tmp /= 4; | |
182 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
183 | c->width = NL80211_CHAN_WIDTH_80; | |
184 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
185 | IEEE80211_STA_DISABLE_160MHZ; | |
186 | break; | |
187 | default: | |
188 | case NL80211_CHAN_WIDTH_20_NOHT: | |
189 | WARN_ON_ONCE(1); | |
190 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
191 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
192 | break; | |
0418a445 SW |
193 | case NL80211_CHAN_WIDTH_5: |
194 | case NL80211_CHAN_WIDTH_10: | |
195 | WARN_ON_ONCE(1); | |
196 | /* keep c->width */ | |
197 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
198 | break; | |
6565ec9b JB |
199 | } |
200 | ||
201 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
202 | ||
203 | return ret; | |
204 | } | |
205 | ||
206 | static u32 | |
207 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
208 | struct ieee80211_supported_band *sband, | |
209 | struct ieee80211_channel *channel, | |
210 | const struct ieee80211_ht_operation *ht_oper, | |
211 | const struct ieee80211_vht_operation *vht_oper, | |
30eb1dc2 | 212 | struct cfg80211_chan_def *chandef, bool verbose) |
6565ec9b JB |
213 | { |
214 | struct cfg80211_chan_def vht_chandef; | |
215 | u32 ht_cfreq, ret; | |
216 | ||
217 | chandef->chan = channel; | |
218 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
219 | chandef->center_freq1 = channel->center_freq; | |
220 | chandef->center_freq2 = 0; | |
221 | ||
222 | if (!ht_oper || !sband->ht_cap.ht_supported) { | |
223 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
224 | goto out; | |
225 | } | |
226 | ||
227 | chandef->width = NL80211_CHAN_WIDTH_20; | |
228 | ||
229 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
230 | channel->band); | |
231 | /* check that channel matches the right operating channel */ | |
232 | if (channel->center_freq != ht_cfreq) { | |
233 | /* | |
234 | * It's possible that some APs are confused here; | |
235 | * Netgear WNDR3700 sometimes reports 4 higher than | |
236 | * the actual channel in association responses, but | |
237 | * since we look at probe response/beacon data here | |
238 | * it should be OK. | |
239 | */ | |
30eb1dc2 JB |
240 | if (verbose) |
241 | sdata_info(sdata, | |
242 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
243 | channel->center_freq, ht_cfreq, | |
244 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
245 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
246 | goto out; | |
247 | } | |
248 | ||
249 | /* check 40 MHz support, if we have it */ | |
250 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
251 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
252 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
253 | chandef->width = NL80211_CHAN_WIDTH_40; | |
254 | chandef->center_freq1 += 10; | |
255 | break; | |
256 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
257 | chandef->width = NL80211_CHAN_WIDTH_40; | |
258 | chandef->center_freq1 -= 10; | |
259 | break; | |
260 | } | |
261 | } else { | |
262 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
263 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
264 | /* also mark 40 MHz disabled */ |
265 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
266 | goto out; |
267 | } | |
268 | ||
269 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
270 | ret = IEEE80211_STA_DISABLE_VHT; | |
271 | goto out; | |
272 | } | |
273 | ||
274 | vht_chandef.chan = channel; | |
275 | vht_chandef.center_freq1 = | |
276 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
277 | channel->band); | |
278 | vht_chandef.center_freq2 = 0; | |
279 | ||
6565ec9b JB |
280 | switch (vht_oper->chan_width) { |
281 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
282 | vht_chandef.width = chandef->width; | |
283 | break; | |
284 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
285 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
286 | break; | |
287 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
288 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
289 | break; | |
290 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
291 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
292 | vht_chandef.center_freq2 = |
293 | ieee80211_channel_to_frequency( | |
294 | vht_oper->center_freq_seg2_idx, | |
295 | channel->band); | |
6565ec9b JB |
296 | break; |
297 | default: | |
30eb1dc2 JB |
298 | if (verbose) |
299 | sdata_info(sdata, | |
300 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
301 | vht_oper->chan_width); | |
6565ec9b JB |
302 | ret = IEEE80211_STA_DISABLE_VHT; |
303 | goto out; | |
304 | } | |
305 | ||
306 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
30eb1dc2 JB |
307 | if (verbose) |
308 | sdata_info(sdata, | |
309 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
310 | ret = IEEE80211_STA_DISABLE_VHT; |
311 | goto out; | |
312 | } | |
313 | ||
314 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
315 | ret = 0; | |
316 | goto out; | |
317 | } | |
318 | ||
319 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
30eb1dc2 JB |
320 | if (verbose) |
321 | sdata_info(sdata, | |
322 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
323 | ret = IEEE80211_STA_DISABLE_VHT; |
324 | goto out; | |
325 | } | |
326 | ||
327 | *chandef = vht_chandef; | |
328 | ||
329 | ret = 0; | |
330 | ||
331 | out: | |
586e01ed JB |
332 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
333 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
334 | vht_chandef = *chandef; | |
335 | ||
6565ec9b JB |
336 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
337 | IEEE80211_CHAN_DISABLED)) { | |
338 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { | |
339 | ret = IEEE80211_STA_DISABLE_HT | | |
340 | IEEE80211_STA_DISABLE_VHT; | |
341 | goto out; | |
342 | } | |
343 | ||
344 | ret |= chandef_downgrade(chandef); | |
345 | } | |
346 | ||
30eb1dc2 | 347 | if (chandef->width != vht_chandef.width && verbose) |
6565ec9b JB |
348 | sdata_info(sdata, |
349 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
350 | ||
351 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
352 | return ret; | |
353 | } | |
354 | ||
30eb1dc2 JB |
355 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
356 | struct sta_info *sta, | |
357 | const struct ieee80211_ht_operation *ht_oper, | |
358 | const struct ieee80211_vht_operation *vht_oper, | |
359 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
360 | { |
361 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 362 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 363 | struct ieee80211_supported_band *sband; |
55de908a | 364 | struct ieee80211_channel *chan; |
30eb1dc2 | 365 | struct cfg80211_chan_def chandef; |
9ed6bcce | 366 | u16 ht_opmode; |
30eb1dc2 JB |
367 | u32 flags; |
368 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
369 | int ret; | |
d5522e03 | 370 | |
30eb1dc2 JB |
371 | /* if HT was/is disabled, don't track any bandwidth changes */ |
372 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
373 | return 0; |
374 | ||
30eb1dc2 JB |
375 | /* don't check VHT if we associated as non-VHT station */ |
376 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
377 | vht_oper = NULL; | |
378 | ||
379 | if (WARN_ON_ONCE(!sta)) | |
380 | return -EINVAL; | |
381 | ||
f2d9330e | 382 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 383 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 384 | |
30eb1dc2 JB |
385 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
386 | flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper, | |
387 | vht_oper, &chandef, false); | |
388 | ||
389 | /* | |
390 | * Downgrade the new channel if we associated with restricted | |
391 | * capabilities. For example, if we associated as a 20 MHz STA | |
392 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
393 | * reasons) then switching to a 40 MHz channel now won't do us | |
394 | * any good -- we couldn't use it with the AP. | |
395 | */ | |
396 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
397 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
398 | flags |= chandef_downgrade(&chandef); | |
399 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && | |
400 | chandef.width == NL80211_CHAN_WIDTH_160) | |
401 | flags |= chandef_downgrade(&chandef); | |
402 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && | |
403 | chandef.width > NL80211_CHAN_WIDTH_20) | |
404 | flags |= chandef_downgrade(&chandef); | |
405 | ||
406 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
407 | return 0; | |
408 | ||
409 | sdata_info(sdata, | |
410 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
411 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
412 | chandef.center_freq1, chandef.center_freq2); | |
413 | ||
414 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
415 | IEEE80211_STA_DISABLE_VHT | | |
416 | IEEE80211_STA_DISABLE_40MHZ | | |
417 | IEEE80211_STA_DISABLE_80P80MHZ | | |
418 | IEEE80211_STA_DISABLE_160MHZ)) || | |
419 | !cfg80211_chandef_valid(&chandef)) { | |
420 | sdata_info(sdata, | |
421 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
422 | ifmgd->bssid); | |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | switch (chandef.width) { | |
427 | case NL80211_CHAN_WIDTH_20_NOHT: | |
428 | case NL80211_CHAN_WIDTH_20: | |
429 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
430 | break; | |
4bf88530 | 431 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 432 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 433 | break; |
30eb1dc2 JB |
434 | case NL80211_CHAN_WIDTH_80: |
435 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
436 | break; | |
437 | case NL80211_CHAN_WIDTH_80P80: | |
438 | case NL80211_CHAN_WIDTH_160: | |
439 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 440 | break; |
30eb1dc2 JB |
441 | default: |
442 | return -EINVAL; | |
64f68e5d | 443 | } |
d5522e03 | 444 | |
30eb1dc2 JB |
445 | if (new_sta_bw > sta->cur_max_bandwidth) |
446 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 447 | |
30eb1dc2 JB |
448 | if (new_sta_bw < sta->sta.bandwidth) { |
449 | sta->sta.bandwidth = new_sta_bw; | |
450 | rate_control_rate_update(local, sband, sta, | |
451 | IEEE80211_RC_BW_CHANGED); | |
452 | } | |
64f68e5d | 453 | |
30eb1dc2 JB |
454 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
455 | if (ret) { | |
456 | sdata_info(sdata, | |
457 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
458 | ifmgd->bssid); | |
459 | return ret; | |
460 | } | |
7cc44ed4 | 461 | |
30eb1dc2 JB |
462 | if (new_sta_bw > sta->sta.bandwidth) { |
463 | sta->sta.bandwidth = new_sta_bw; | |
464 | rate_control_rate_update(local, sband, sta, | |
465 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 466 | } |
d5522e03 | 467 | |
074d46d1 | 468 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); |
d5522e03 JB |
469 | |
470 | /* if bss configuration changed store the new one */ | |
30eb1dc2 JB |
471 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { |
472 | *changed |= BSS_CHANGED_HT; | |
9ed6bcce | 473 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
d5522e03 JB |
474 | } |
475 | ||
30eb1dc2 | 476 | return 0; |
d5522e03 JB |
477 | } |
478 | ||
9c6bd790 JB |
479 | /* frame sending functions */ |
480 | ||
66e67e41 JB |
481 | static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, |
482 | struct ieee80211_supported_band *sband, | |
483 | u32 *rates) | |
484 | { | |
485 | int i, j, count; | |
486 | *rates = 0; | |
487 | count = 0; | |
488 | for (i = 0; i < supp_rates_len; i++) { | |
489 | int rate = (supp_rates[i] & 0x7F) * 5; | |
490 | ||
491 | for (j = 0; j < sband->n_bitrates; j++) | |
492 | if (sband->bitrates[j].bitrate == rate) { | |
493 | *rates |= BIT(j); | |
494 | count++; | |
495 | break; | |
496 | } | |
497 | } | |
498 | ||
499 | return count; | |
500 | } | |
501 | ||
502 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, | |
9dde6423 | 503 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
504 | struct ieee80211_supported_band *sband, |
505 | struct ieee80211_channel *channel, | |
506 | enum ieee80211_smps_mode smps) | |
507 | { | |
66e67e41 JB |
508 | u8 *pos; |
509 | u32 flags = channel->flags; | |
510 | u16 cap; | |
511 | struct ieee80211_sta_ht_cap ht_cap; | |
512 | ||
513 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
514 | ||
66e67e41 JB |
515 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
516 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
517 | ||
66e67e41 JB |
518 | /* determine capability flags */ |
519 | cap = ht_cap.cap; | |
520 | ||
9dde6423 | 521 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
522 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
523 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
524 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
525 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
526 | } | |
527 | break; | |
528 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
529 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
530 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
531 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
532 | } | |
533 | break; | |
534 | } | |
535 | ||
24398e39 JB |
536 | /* |
537 | * If 40 MHz was disabled associate as though we weren't | |
538 | * capable of 40 MHz -- some broken APs will never fall | |
539 | * back to trying to transmit in 20 MHz. | |
540 | */ | |
541 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
542 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
543 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
544 | } | |
545 | ||
66e67e41 JB |
546 | /* set SM PS mode properly */ |
547 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
548 | switch (smps) { | |
549 | case IEEE80211_SMPS_AUTOMATIC: | |
550 | case IEEE80211_SMPS_NUM_MODES: | |
551 | WARN_ON(1); | |
552 | case IEEE80211_SMPS_OFF: | |
553 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
554 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
555 | break; | |
556 | case IEEE80211_SMPS_STATIC: | |
557 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
558 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
559 | break; | |
560 | case IEEE80211_SMPS_DYNAMIC: | |
561 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
562 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
563 | break; | |
564 | } | |
565 | ||
566 | /* reserve and fill IE */ | |
567 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
568 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
569 | } | |
570 | ||
d545daba MP |
571 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
572 | struct sk_buff *skb, | |
b08fbbd8 JB |
573 | struct ieee80211_supported_band *sband, |
574 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
575 | { |
576 | u8 *pos; | |
577 | u32 cap; | |
578 | struct ieee80211_sta_vht_cap vht_cap; | |
579 | ||
580 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
581 | ||
582 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 583 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
584 | |
585 | /* determine capability flags */ | |
586 | cap = vht_cap.cap; | |
587 | ||
f2d9d270 JB |
588 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
589 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
590 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
591 | } | |
592 | ||
593 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
594 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
595 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
596 | } | |
597 | ||
b08fbbd8 JB |
598 | /* |
599 | * Some APs apparently get confused if our capabilities are better | |
600 | * than theirs, so restrict what we advertise in the assoc request. | |
601 | */ | |
602 | if (!(ap_vht_cap->vht_cap_info & | |
603 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
604 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
605 | ||
d545daba | 606 | /* reserve and fill IE */ |
d4950281 | 607 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
608 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
609 | } | |
610 | ||
66e67e41 JB |
611 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
612 | { | |
613 | struct ieee80211_local *local = sdata->local; | |
614 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
615 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
616 | struct sk_buff *skb; | |
617 | struct ieee80211_mgmt *mgmt; | |
618 | u8 *pos, qos_info; | |
619 | size_t offset = 0, noffset; | |
620 | int i, count, rates_len, supp_rates_len; | |
621 | u16 capab; | |
622 | struct ieee80211_supported_band *sband; | |
55de908a JB |
623 | struct ieee80211_chanctx_conf *chanctx_conf; |
624 | struct ieee80211_channel *chan; | |
66e67e41 | 625 | u32 rates = 0; |
66e67e41 | 626 | |
8d61ffa5 | 627 | sdata_assert_lock(sdata); |
66e67e41 | 628 | |
55de908a JB |
629 | rcu_read_lock(); |
630 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
631 | if (WARN_ON(!chanctx_conf)) { | |
632 | rcu_read_unlock(); | |
633 | return; | |
634 | } | |
4bf88530 | 635 | chan = chanctx_conf->def.chan; |
55de908a JB |
636 | rcu_read_unlock(); |
637 | sband = local->hw.wiphy->bands[chan->band]; | |
66e67e41 JB |
638 | |
639 | if (assoc_data->supp_rates_len) { | |
640 | /* | |
641 | * Get all rates supported by the device and the AP as | |
642 | * some APs don't like getting a superset of their rates | |
643 | * in the association request (e.g. D-Link DAP 1353 in | |
644 | * b-only mode)... | |
645 | */ | |
646 | rates_len = ieee80211_compatible_rates(assoc_data->supp_rates, | |
647 | assoc_data->supp_rates_len, | |
648 | sband, &rates); | |
649 | } else { | |
650 | /* | |
651 | * In case AP not provide any supported rates information | |
652 | * before association, we send information element(s) with | |
653 | * all rates that we support. | |
654 | */ | |
655 | rates = ~0; | |
656 | rates_len = sband->n_bitrates; | |
657 | } | |
658 | ||
659 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
660 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
661 | 2 + assoc_data->ssid_len + /* SSID */ | |
662 | 4 + rates_len + /* (extended) rates */ | |
663 | 4 + /* power capability */ | |
664 | 2 + 2 * sband->n_channels + /* supported channels */ | |
665 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 666 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
667 | assoc_data->ie_len + /* extra IEs */ |
668 | 9, /* WMM */ | |
669 | GFP_KERNEL); | |
670 | if (!skb) | |
671 | return; | |
672 | ||
673 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
674 | ||
675 | capab = WLAN_CAPABILITY_ESS; | |
676 | ||
677 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
678 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
679 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
680 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
681 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
682 | } | |
683 | ||
684 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
685 | capab |= WLAN_CAPABILITY_PRIVACY; | |
686 | ||
687 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
688 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
689 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
690 | ||
691 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
692 | memset(mgmt, 0, 24); | |
693 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
694 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
695 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
696 | ||
697 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
698 | skb_put(skb, 10); | |
699 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
700 | IEEE80211_STYPE_REASSOC_REQ); | |
701 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
702 | mgmt->u.reassoc_req.listen_interval = | |
703 | cpu_to_le16(local->hw.conf.listen_interval); | |
704 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
705 | ETH_ALEN); | |
706 | } else { | |
707 | skb_put(skb, 4); | |
708 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
709 | IEEE80211_STYPE_ASSOC_REQ); | |
710 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
711 | mgmt->u.assoc_req.listen_interval = | |
712 | cpu_to_le16(local->hw.conf.listen_interval); | |
713 | } | |
714 | ||
715 | /* SSID */ | |
716 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
717 | *pos++ = WLAN_EID_SSID; | |
718 | *pos++ = assoc_data->ssid_len; | |
719 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
720 | ||
721 | /* add all rates which were marked to be used above */ | |
722 | supp_rates_len = rates_len; | |
723 | if (supp_rates_len > 8) | |
724 | supp_rates_len = 8; | |
725 | ||
726 | pos = skb_put(skb, supp_rates_len + 2); | |
727 | *pos++ = WLAN_EID_SUPP_RATES; | |
728 | *pos++ = supp_rates_len; | |
729 | ||
730 | count = 0; | |
731 | for (i = 0; i < sband->n_bitrates; i++) { | |
732 | if (BIT(i) & rates) { | |
733 | int rate = sband->bitrates[i].bitrate; | |
734 | *pos++ = (u8) (rate / 5); | |
735 | if (++count == 8) | |
736 | break; | |
737 | } | |
738 | } | |
739 | ||
740 | if (rates_len > count) { | |
741 | pos = skb_put(skb, rates_len - count + 2); | |
742 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
743 | *pos++ = rates_len - count; | |
744 | ||
745 | for (i++; i < sband->n_bitrates; i++) { | |
746 | if (BIT(i) & rates) { | |
747 | int rate = sband->bitrates[i].bitrate; | |
748 | *pos++ = (u8) (rate / 5); | |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
754 | /* 1. power capabilities */ | |
755 | pos = skb_put(skb, 4); | |
756 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
757 | *pos++ = 2; | |
758 | *pos++ = 0; /* min tx power */ | |
55de908a | 759 | *pos++ = chan->max_power; /* max tx power */ |
66e67e41 JB |
760 | |
761 | /* 2. supported channels */ | |
762 | /* TODO: get this in reg domain format */ | |
763 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
764 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
765 | *pos++ = 2 * sband->n_channels; | |
766 | for (i = 0; i < sband->n_channels; i++) { | |
767 | *pos++ = ieee80211_frequency_to_channel( | |
768 | sband->channels[i].center_freq); | |
769 | *pos++ = 1; /* one channel in the subband*/ | |
770 | } | |
771 | } | |
772 | ||
773 | /* if present, add any custom IEs that go before HT */ | |
774 | if (assoc_data->ie_len && assoc_data->ie) { | |
775 | static const u8 before_ht[] = { | |
776 | WLAN_EID_SSID, | |
777 | WLAN_EID_SUPP_RATES, | |
778 | WLAN_EID_EXT_SUPP_RATES, | |
779 | WLAN_EID_PWR_CAPABILITY, | |
780 | WLAN_EID_SUPPORTED_CHANNELS, | |
781 | WLAN_EID_RSN, | |
782 | WLAN_EID_QOS_CAPA, | |
783 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
784 | WLAN_EID_MOBILITY_DOMAIN, | |
785 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
786 | }; | |
787 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
788 | before_ht, ARRAY_SIZE(before_ht), | |
789 | offset); | |
790 | pos = skb_put(skb, noffset - offset); | |
791 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
792 | offset = noffset; | |
793 | } | |
794 | ||
f2d9d270 JB |
795 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
796 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
797 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
798 | ||
a8243b72 | 799 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 800 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 801 | sband, chan, sdata->smps_mode); |
66e67e41 | 802 | |
d545daba | 803 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
804 | ieee80211_add_vht_ie(sdata, skb, sband, |
805 | &assoc_data->ap_vht_cap); | |
d545daba | 806 | |
66e67e41 JB |
807 | /* if present, add any custom non-vendor IEs that go after HT */ |
808 | if (assoc_data->ie_len && assoc_data->ie) { | |
809 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, | |
810 | assoc_data->ie_len, | |
811 | offset); | |
812 | pos = skb_put(skb, noffset - offset); | |
813 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
814 | offset = noffset; | |
815 | } | |
816 | ||
76f0303d JB |
817 | if (assoc_data->wmm) { |
818 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
819 | qos_info = ifmgd->uapsd_queues; |
820 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
821 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
822 | } else { | |
823 | qos_info = 0; | |
824 | } | |
825 | ||
826 | pos = skb_put(skb, 9); | |
827 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
828 | *pos++ = 7; /* len */ | |
829 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
830 | *pos++ = 0x50; | |
831 | *pos++ = 0xf2; | |
832 | *pos++ = 2; /* WME */ | |
833 | *pos++ = 0; /* WME info */ | |
834 | *pos++ = 1; /* WME ver */ | |
835 | *pos++ = qos_info; | |
836 | } | |
837 | ||
838 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
839 | if (assoc_data->ie_len && assoc_data->ie) { | |
840 | noffset = assoc_data->ie_len; | |
841 | pos = skb_put(skb, noffset - offset); | |
842 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
843 | } | |
844 | ||
a1845fc7 JB |
845 | drv_mgd_prepare_tx(local, sdata); |
846 | ||
66e67e41 | 847 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
848 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
849 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
850 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
851 | ieee80211_tx_skb(sdata, skb); |
852 | } | |
853 | ||
572e0012 KV |
854 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
855 | struct ieee80211_sub_if_data *sdata) | |
856 | { | |
572e0012 KV |
857 | struct ieee80211_pspoll *pspoll; |
858 | struct sk_buff *skb; | |
572e0012 | 859 | |
d8cd189e KV |
860 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
861 | if (!skb) | |
572e0012 | 862 | return; |
572e0012 | 863 | |
d8cd189e KV |
864 | pspoll = (struct ieee80211_pspoll *) skb->data; |
865 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 866 | |
62ae67be JB |
867 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
868 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
869 | } |
870 | ||
965bedad JB |
871 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
872 | struct ieee80211_sub_if_data *sdata, | |
873 | int powersave) | |
874 | { | |
875 | struct sk_buff *skb; | |
d8cd189e | 876 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 877 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 878 | |
d8cd189e KV |
879 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
880 | if (!skb) | |
965bedad | 881 | return; |
965bedad | 882 | |
d8cd189e | 883 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 884 | if (powersave) |
d8cd189e | 885 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 886 | |
6c17b77b SF |
887 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
888 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 PF |
889 | |
890 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) | |
891 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
892 | ||
b6f35301 RM |
893 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
894 | IEEE80211_STA_CONNECTION_POLL)) | |
895 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; | |
896 | ||
62ae67be | 897 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
898 | } |
899 | ||
d524215f FF |
900 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
901 | struct ieee80211_sub_if_data *sdata) | |
902 | { | |
903 | struct sk_buff *skb; | |
904 | struct ieee80211_hdr *nullfunc; | |
905 | __le16 fc; | |
906 | ||
907 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
908 | return; | |
909 | ||
910 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 911 | if (!skb) |
d524215f | 912 | return; |
d15b8459 | 913 | |
d524215f FF |
914 | skb_reserve(skb, local->hw.extra_tx_headroom); |
915 | ||
916 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
917 | memset(nullfunc, 0, 30); | |
918 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
919 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
920 | nullfunc->frame_control = fc; | |
921 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
922 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
923 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
924 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
925 | ||
926 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
927 | ieee80211_tx_skb(sdata, skb); | |
928 | } | |
929 | ||
cc32abd4 JB |
930 | /* spectrum management related things */ |
931 | static void ieee80211_chswitch_work(struct work_struct *work) | |
932 | { | |
933 | struct ieee80211_sub_if_data *sdata = | |
934 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 935 | struct ieee80211_local *local = sdata->local; |
cc32abd4 JB |
936 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
937 | ||
9607e6b6 | 938 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
939 | return; |
940 | ||
8d61ffa5 | 941 | sdata_lock(sdata); |
77fdaa12 JB |
942 | if (!ifmgd->associated) |
943 | goto out; | |
cc32abd4 | 944 | |
85220d71 | 945 | local->_oper_chandef = local->csa_chandef; |
675a0b04 KB |
946 | |
947 | if (!local->ops->channel_switch) { | |
5ce6e438 | 948 | /* call "hw_config" only if doing sw channel switch */ |
675a0b04 | 949 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); |
1ea57b1f SL |
950 | } else { |
951 | /* update the device channel directly */ | |
675a0b04 | 952 | local->hw.conf.chandef = local->_oper_chandef; |
5ce6e438 | 953 | } |
77fdaa12 | 954 | |
cc32abd4 | 955 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
675a0b04 | 956 | ifmgd->associated->channel = local->_oper_chandef.chan; |
cc32abd4 | 957 | |
57eebdf3 | 958 | /* XXX: wait for a beacon first? */ |
675a0b04 | 959 | ieee80211_wake_queues_by_reason(&local->hw, |
445ea4e8 | 960 | IEEE80211_MAX_QUEUE_MAP, |
cc32abd4 | 961 | IEEE80211_QUEUE_STOP_REASON_CSA); |
77fdaa12 JB |
962 | out: |
963 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
8d61ffa5 | 964 | sdata_unlock(sdata); |
cc32abd4 JB |
965 | } |
966 | ||
5ce6e438 JB |
967 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
968 | { | |
55de908a JB |
969 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
970 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
971 | |
972 | trace_api_chswitch_done(sdata, success); | |
973 | if (!success) { | |
882a7c69 JB |
974 | sdata_info(sdata, |
975 | "driver channel switch failed, disconnecting\n"); | |
976 | ieee80211_queue_work(&sdata->local->hw, | |
977 | &ifmgd->csa_connection_drop_work); | |
978 | } else { | |
979 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 980 | } |
5ce6e438 JB |
981 | } |
982 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
983 | ||
cc32abd4 JB |
984 | static void ieee80211_chswitch_timer(unsigned long data) |
985 | { | |
986 | struct ieee80211_sub_if_data *sdata = | |
987 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 988 | |
9b7d72c1 | 989 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
990 | } |
991 | ||
37799e52 | 992 | static void |
4a3cb702 | 993 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
04a161f4 JB |
994 | u64 timestamp, struct ieee802_11_elems *elems, |
995 | bool beacon) | |
cc32abd4 | 996 | { |
b4f286a1 | 997 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 998 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 JB |
999 | struct cfg80211_bss *cbss = ifmgd->associated; |
1000 | struct ieee80211_bss *bss; | |
55de908a | 1001 | struct ieee80211_chanctx *chanctx; |
b4f286a1 JB |
1002 | enum ieee80211_band new_band; |
1003 | int new_freq; | |
1004 | u8 new_chan_no; | |
1005 | u8 count; | |
1006 | u8 mode; | |
cd64f2a9 | 1007 | struct ieee80211_channel *new_chan; |
85220d71 | 1008 | struct cfg80211_chan_def new_chandef = {}; |
cd64f2a9 JB |
1009 | struct cfg80211_chan_def new_vht_chandef = {}; |
1010 | const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; | |
1011 | const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; | |
04a161f4 | 1012 | const struct ieee80211_ht_operation *ht_oper; |
85220d71 | 1013 | int secondary_channel_offset = -1; |
cc32abd4 | 1014 | |
8d61ffa5 | 1015 | sdata_assert_lock(sdata); |
77fdaa12 | 1016 | |
37799e52 | 1017 | if (!cbss) |
cc32abd4 JB |
1018 | return; |
1019 | ||
b4f286a1 | 1020 | if (local->scanning) |
cc32abd4 JB |
1021 | return; |
1022 | ||
37799e52 | 1023 | /* disregard subsequent announcements if we are already processing */ |
cc32abd4 JB |
1024 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) |
1025 | return; | |
1026 | ||
cd64f2a9 JB |
1027 | sec_chan_offs = elems->sec_chan_offs; |
1028 | wide_bw_chansw_ie = elems->wide_bw_chansw_ie; | |
04a161f4 | 1029 | ht_oper = elems->ht_operation; |
cd64f2a9 JB |
1030 | |
1031 | if (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
1032 | IEEE80211_STA_DISABLE_40MHZ)) { | |
1033 | sec_chan_offs = NULL; | |
1034 | wide_bw_chansw_ie = NULL; | |
04a161f4 JB |
1035 | /* only used for bandwidth here */ |
1036 | ht_oper = NULL; | |
85220d71 JB |
1037 | } |
1038 | ||
cd64f2a9 JB |
1039 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) |
1040 | wide_bw_chansw_ie = NULL; | |
85220d71 | 1041 | |
b4f286a1 JB |
1042 | if (elems->ext_chansw_ie) { |
1043 | if (!ieee80211_operating_class_to_band( | |
1044 | elems->ext_chansw_ie->new_operating_class, | |
1045 | &new_band)) { | |
1046 | sdata_info(sdata, | |
1047 | "cannot understand ECSA IE operating class %d, disconnecting\n", | |
1048 | elems->ext_chansw_ie->new_operating_class); | |
1049 | ieee80211_queue_work(&local->hw, | |
1050 | &ifmgd->csa_connection_drop_work); | |
1051 | } | |
1052 | new_chan_no = elems->ext_chansw_ie->new_ch_num; | |
1053 | count = elems->ext_chansw_ie->count; | |
1054 | mode = elems->ext_chansw_ie->mode; | |
1055 | } else if (elems->ch_switch_ie) { | |
1056 | new_band = cbss->channel->band; | |
1057 | new_chan_no = elems->ch_switch_ie->new_ch_num; | |
1058 | count = elems->ch_switch_ie->count; | |
1059 | mode = elems->ch_switch_ie->mode; | |
1060 | } else { | |
1061 | /* nothing here we understand */ | |
37799e52 | 1062 | return; |
b4f286a1 | 1063 | } |
37799e52 JB |
1064 | |
1065 | bss = (void *)cbss->priv; | |
1066 | ||
b4f286a1 | 1067 | new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band); |
cd64f2a9 JB |
1068 | new_chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); |
1069 | if (!new_chan || new_chan->flags & IEEE80211_CHAN_DISABLED) { | |
882a7c69 JB |
1070 | sdata_info(sdata, |
1071 | "AP %pM switches to unsupported channel (%d MHz), disconnecting\n", | |
1072 | ifmgd->associated->bssid, new_freq); | |
b4f286a1 | 1073 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1074 | &ifmgd->csa_connection_drop_work); |
cc32abd4 | 1075 | return; |
882a7c69 | 1076 | } |
cc32abd4 | 1077 | |
04a161f4 | 1078 | if (!beacon && sec_chan_offs) { |
cd64f2a9 | 1079 | secondary_channel_offset = sec_chan_offs->sec_chan_offs; |
04a161f4 JB |
1080 | } else if (beacon && ht_oper) { |
1081 | secondary_channel_offset = | |
1082 | ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET; | |
cd64f2a9 | 1083 | } else if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { |
04a161f4 JB |
1084 | /* |
1085 | * If it's not a beacon, HT is enabled and the IE not present, | |
1086 | * it's 20 MHz, 802.11-2012 8.5.2.6: | |
1087 | * This element [the Secondary Channel Offset Element] is | |
1088 | * present when switching to a 40 MHz channel. It may be | |
1089 | * present when switching to a 20 MHz channel (in which | |
1090 | * case the secondary channel offset is set to SCN). | |
1091 | */ | |
cd64f2a9 JB |
1092 | secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
1093 | } | |
1094 | ||
85220d71 JB |
1095 | switch (secondary_channel_offset) { |
1096 | default: | |
1097 | /* secondary_channel_offset was present but is invalid */ | |
1098 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
cd64f2a9 | 1099 | cfg80211_chandef_create(&new_chandef, new_chan, |
85220d71 JB |
1100 | NL80211_CHAN_HT20); |
1101 | break; | |
1102 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
cd64f2a9 | 1103 | cfg80211_chandef_create(&new_chandef, new_chan, |
85220d71 JB |
1104 | NL80211_CHAN_HT40PLUS); |
1105 | break; | |
1106 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
cd64f2a9 | 1107 | cfg80211_chandef_create(&new_chandef, new_chan, |
85220d71 JB |
1108 | NL80211_CHAN_HT40MINUS); |
1109 | break; | |
1110 | case -1: | |
cd64f2a9 | 1111 | cfg80211_chandef_create(&new_chandef, new_chan, |
85220d71 JB |
1112 | NL80211_CHAN_NO_HT); |
1113 | break; | |
1114 | } | |
1115 | ||
cd64f2a9 JB |
1116 | if (wide_bw_chansw_ie) { |
1117 | new_vht_chandef.chan = new_chan; | |
1118 | new_vht_chandef.center_freq1 = | |
1119 | ieee80211_channel_to_frequency( | |
1120 | wide_bw_chansw_ie->new_center_freq_seg0, | |
1121 | new_band); | |
1122 | ||
1123 | switch (wide_bw_chansw_ie->new_channel_width) { | |
1124 | default: | |
1125 | /* hmmm, ignore VHT and use HT if present */ | |
1126 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
1127 | new_vht_chandef.chan = NULL; | |
1128 | break; | |
1129 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
1130 | new_vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
1131 | break; | |
1132 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
1133 | new_vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
1134 | break; | |
1135 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
1136 | /* field is otherwise reserved */ | |
1137 | new_vht_chandef.center_freq2 = | |
1138 | ieee80211_channel_to_frequency( | |
1139 | wide_bw_chansw_ie->new_center_freq_seg1, | |
1140 | new_band); | |
1141 | new_vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
1142 | break; | |
1143 | } | |
1144 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
1145 | new_vht_chandef.width == NL80211_CHAN_WIDTH_80P80) | |
1146 | chandef_downgrade(&new_vht_chandef); | |
1147 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && | |
1148 | new_vht_chandef.width == NL80211_CHAN_WIDTH_160) | |
1149 | chandef_downgrade(&new_vht_chandef); | |
1150 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && | |
1151 | new_vht_chandef.width > NL80211_CHAN_WIDTH_20) | |
1152 | chandef_downgrade(&new_vht_chandef); | |
1153 | } | |
1154 | ||
1155 | /* if VHT data is there validate & use it */ | |
1156 | if (new_vht_chandef.chan) { | |
1157 | if (!cfg80211_chandef_compatible(&new_vht_chandef, | |
1158 | &new_chandef)) { | |
1159 | sdata_info(sdata, | |
1160 | "AP %pM CSA has inconsistent channel data, disconnecting\n", | |
1161 | ifmgd->associated->bssid); | |
1162 | ieee80211_queue_work(&local->hw, | |
1163 | &ifmgd->csa_connection_drop_work); | |
1164 | return; | |
1165 | } | |
1166 | new_chandef = new_vht_chandef; | |
1167 | } | |
1168 | ||
85220d71 JB |
1169 | if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef, |
1170 | IEEE80211_CHAN_DISABLED)) { | |
1171 | sdata_info(sdata, | |
1172 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
1173 | ifmgd->associated->bssid, new_freq, | |
1174 | new_chandef.width, new_chandef.center_freq1, | |
1175 | new_chandef.center_freq2); | |
1176 | ieee80211_queue_work(&local->hw, | |
1177 | &ifmgd->csa_connection_drop_work); | |
1178 | return; | |
1179 | } | |
1180 | ||
57eebdf3 JB |
1181 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; |
1182 | ||
b4f286a1 | 1183 | if (local->use_chanctx) { |
55de908a JB |
1184 | sdata_info(sdata, |
1185 | "not handling channel switch with channel contexts\n"); | |
b4f286a1 | 1186 | ieee80211_queue_work(&local->hw, |
55de908a | 1187 | &ifmgd->csa_connection_drop_work); |
246dc3fd | 1188 | return; |
55de908a JB |
1189 | } |
1190 | ||
b4f286a1 | 1191 | mutex_lock(&local->chanctx_mtx); |
55de908a | 1192 | if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { |
b4f286a1 | 1193 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1194 | return; |
1195 | } | |
1196 | chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), | |
1197 | struct ieee80211_chanctx, conf); | |
1198 | if (chanctx->refcount > 1) { | |
1199 | sdata_info(sdata, | |
1200 | "channel switch with multiple interfaces on the same channel, disconnecting\n"); | |
b4f286a1 | 1201 | ieee80211_queue_work(&local->hw, |
55de908a | 1202 | &ifmgd->csa_connection_drop_work); |
b4f286a1 | 1203 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1204 | return; |
1205 | } | |
b4f286a1 | 1206 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1207 | |
85220d71 | 1208 | local->csa_chandef = new_chandef; |
55de908a | 1209 | |
b4f286a1 JB |
1210 | if (mode) |
1211 | ieee80211_stop_queues_by_reason(&local->hw, | |
445ea4e8 | 1212 | IEEE80211_MAX_QUEUE_MAP, |
57eebdf3 JB |
1213 | IEEE80211_QUEUE_STOP_REASON_CSA); |
1214 | ||
b4f286a1 | 1215 | if (local->ops->channel_switch) { |
5ce6e438 | 1216 | /* use driver's channel switch callback */ |
57eebdf3 JB |
1217 | struct ieee80211_channel_switch ch_switch = { |
1218 | .timestamp = timestamp, | |
b4f286a1 | 1219 | .block_tx = mode, |
85220d71 | 1220 | .chandef = new_chandef, |
b4f286a1 | 1221 | .count = count, |
57eebdf3 JB |
1222 | }; |
1223 | ||
b4f286a1 | 1224 | drv_channel_switch(local, &ch_switch); |
5ce6e438 JB |
1225 | return; |
1226 | } | |
1227 | ||
1228 | /* channel switch handled in software */ | |
b4f286a1 JB |
1229 | if (count <= 1) |
1230 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); | |
57eebdf3 | 1231 | else |
cc32abd4 | 1232 | mod_timer(&ifmgd->chswitch_timer, |
b4f286a1 | 1233 | TU_TO_EXP_TIME(count * cbss->beacon_interval)); |
cc32abd4 JB |
1234 | } |
1235 | ||
1ea6f9c0 JB |
1236 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1237 | struct ieee80211_channel *channel, | |
1238 | const u8 *country_ie, u8 country_ie_len, | |
1239 | const u8 *pwr_constr_elem) | |
cc32abd4 | 1240 | { |
04b7b2ff JB |
1241 | struct ieee80211_country_ie_triplet *triplet; |
1242 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
1243 | int i, chan_pwr, chan_increment, new_ap_level; | |
1244 | bool have_chan_pwr = false; | |
cc32abd4 | 1245 | |
04b7b2ff JB |
1246 | /* Invalid IE */ |
1247 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 1248 | return 0; |
cc32abd4 | 1249 | |
04b7b2ff JB |
1250 | triplet = (void *)(country_ie + 3); |
1251 | country_ie_len -= 3; | |
1252 | ||
1253 | switch (channel->band) { | |
1254 | default: | |
1255 | WARN_ON_ONCE(1); | |
1256 | /* fall through */ | |
1257 | case IEEE80211_BAND_2GHZ: | |
1258 | case IEEE80211_BAND_60GHZ: | |
1259 | chan_increment = 1; | |
1260 | break; | |
1261 | case IEEE80211_BAND_5GHZ: | |
1262 | chan_increment = 4; | |
1263 | break; | |
cc32abd4 | 1264 | } |
04b7b2ff JB |
1265 | |
1266 | /* find channel */ | |
1267 | while (country_ie_len >= 3) { | |
1268 | u8 first_channel = triplet->chans.first_channel; | |
1269 | ||
1270 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1271 | goto next; | |
1272 | ||
1273 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1274 | if (first_channel + i * chan_increment == chan) { | |
1275 | have_chan_pwr = true; | |
1276 | chan_pwr = triplet->chans.max_power; | |
1277 | break; | |
1278 | } | |
1279 | } | |
1280 | if (have_chan_pwr) | |
1281 | break; | |
1282 | ||
1283 | next: | |
1284 | triplet++; | |
1285 | country_ie_len -= 3; | |
1286 | } | |
1287 | ||
1288 | if (!have_chan_pwr) | |
1ea6f9c0 | 1289 | return 0; |
04b7b2ff JB |
1290 | |
1291 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
1292 | ||
1ea6f9c0 JB |
1293 | if (sdata->ap_power_level == new_ap_level) |
1294 | return 0; | |
04b7b2ff JB |
1295 | |
1296 | sdata_info(sdata, | |
1297 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1298 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
1299 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
1300 | sdata->ap_power_level = new_ap_level; |
1301 | if (__ieee80211_recalc_txpower(sdata)) | |
1302 | return BSS_CHANGED_TXPOWER; | |
1303 | return 0; | |
cc32abd4 JB |
1304 | } |
1305 | ||
965bedad JB |
1306 | /* powersave */ |
1307 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1308 | struct ieee80211_sub_if_data *sdata) | |
1309 | { | |
1310 | struct ieee80211_conf *conf = &local->hw.conf; | |
1311 | ||
d5edaedc JB |
1312 | /* |
1313 | * If we are scanning right now then the parameters will | |
1314 | * take effect when scan finishes. | |
1315 | */ | |
fbe9c429 | 1316 | if (local->scanning) |
d5edaedc JB |
1317 | return; |
1318 | ||
965bedad JB |
1319 | if (conf->dynamic_ps_timeout > 0 && |
1320 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1321 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1322 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1323 | } else { | |
1324 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1325 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1326 | |
2a13052f JO |
1327 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1328 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1329 | return; | |
1330 | ||
1331 | conf->flags |= IEEE80211_CONF_PS; | |
1332 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1333 | } |
1334 | } | |
1335 | ||
1336 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1337 | { | |
1338 | struct ieee80211_conf *conf = &local->hw.conf; | |
1339 | ||
1340 | if (local->ps_sdata) { | |
965bedad JB |
1341 | ieee80211_enable_ps(local, local->ps_sdata); |
1342 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1343 | conf->flags &= ~IEEE80211_CONF_PS; | |
1344 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1345 | del_timer_sync(&local->dynamic_ps_timer); | |
1346 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1347 | } | |
1348 | } | |
1349 | ||
808118cb JY |
1350 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1351 | { | |
1352 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1353 | struct sta_info *sta = NULL; | |
c2c98fde | 1354 | bool authorized = false; |
808118cb JY |
1355 | |
1356 | if (!mgd->powersave) | |
1357 | return false; | |
1358 | ||
05cb9108 JB |
1359 | if (mgd->broken_ap) |
1360 | return false; | |
1361 | ||
808118cb JY |
1362 | if (!mgd->associated) |
1363 | return false; | |
1364 | ||
808118cb JY |
1365 | if (mgd->flags & (IEEE80211_STA_BEACON_POLL | |
1366 | IEEE80211_STA_CONNECTION_POLL)) | |
1367 | return false; | |
1368 | ||
989c6505 | 1369 | if (!mgd->have_beacon) |
ce857888 AB |
1370 | return false; |
1371 | ||
808118cb JY |
1372 | rcu_read_lock(); |
1373 | sta = sta_info_get(sdata, mgd->bssid); | |
1374 | if (sta) | |
c2c98fde | 1375 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1376 | rcu_read_unlock(); |
1377 | ||
c2c98fde | 1378 | return authorized; |
808118cb JY |
1379 | } |
1380 | ||
965bedad | 1381 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1382 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1383 | { |
1384 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1385 | int count = 0; | |
195e294d | 1386 | int timeout; |
965bedad JB |
1387 | |
1388 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1389 | local->ps_sdata = NULL; | |
1390 | return; | |
1391 | } | |
1392 | ||
1393 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1394 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1395 | continue; |
8c7914de RM |
1396 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1397 | /* If an AP vif is found, then disable PS | |
1398 | * by setting the count to zero thereby setting | |
1399 | * ps_sdata to NULL. | |
1400 | */ | |
1401 | count = 0; | |
1402 | break; | |
1403 | } | |
965bedad JB |
1404 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1405 | continue; | |
1406 | found = sdata; | |
1407 | count++; | |
1408 | } | |
1409 | ||
808118cb | 1410 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1411 | s32 beaconint_us; |
1412 | ||
1413 | if (latency < 0) | |
ed77134b | 1414 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1415 | |
1416 | beaconint_us = ieee80211_tu_to_usec( | |
1417 | found->vif.bss_conf.beacon_int); | |
1418 | ||
ff616381 | 1419 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1420 | if (timeout < 0) { |
1421 | /* | |
ff616381 JO |
1422 | * Go to full PSM if the user configures a very low |
1423 | * latency requirement. | |
0ab82b04 EP |
1424 | * The 2000 second value is there for compatibility |
1425 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1426 | * with real values. | |
195e294d | 1427 | */ |
0ab82b04 EP |
1428 | if (latency > (1900 * USEC_PER_MSEC) && |
1429 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1430 | timeout = 0; |
ff616381 JO |
1431 | else |
1432 | timeout = 100; | |
195e294d | 1433 | } |
09b85568 | 1434 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1435 | |
04fe2037 | 1436 | if (beaconint_us > latency) { |
10f644a4 | 1437 | local->ps_sdata = NULL; |
04fe2037 | 1438 | } else { |
04fe2037 | 1439 | int maxslp = 1; |
826262c3 | 1440 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1441 | |
1442 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1443 | if (!dtimper) | |
1444 | dtimper = 1; | |
1445 | else if (dtimper > 1) | |
04fe2037 JB |
1446 | maxslp = min_t(int, dtimper, |
1447 | latency / beaconint_us); | |
1448 | ||
9ccebe61 | 1449 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1450 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1451 | local->ps_sdata = found; |
04fe2037 | 1452 | } |
10f644a4 | 1453 | } else { |
965bedad | 1454 | local->ps_sdata = NULL; |
10f644a4 | 1455 | } |
965bedad JB |
1456 | |
1457 | ieee80211_change_ps(local); | |
1458 | } | |
1459 | ||
ab095877 EP |
1460 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1461 | { | |
1462 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1463 | ||
1464 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1465 | sdata->vif.bss_conf.ps = ps_allowed; | |
1466 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1467 | } | |
1468 | } | |
1469 | ||
965bedad JB |
1470 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1471 | { | |
1472 | struct ieee80211_local *local = | |
1473 | container_of(work, struct ieee80211_local, | |
1474 | dynamic_ps_disable_work); | |
1475 | ||
1476 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1477 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1478 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1479 | } | |
1480 | ||
1481 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1482 | IEEE80211_MAX_QUEUE_MAP, |
965bedad JB |
1483 | IEEE80211_QUEUE_STOP_REASON_PS); |
1484 | } | |
1485 | ||
1486 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1487 | { | |
1488 | struct ieee80211_local *local = | |
1489 | container_of(work, struct ieee80211_local, | |
1490 | dynamic_ps_enable_work); | |
1491 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1492 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1493 | unsigned long flags; |
1494 | int q; | |
965bedad JB |
1495 | |
1496 | /* can only happen when PS was just disabled anyway */ | |
1497 | if (!sdata) | |
1498 | return; | |
1499 | ||
5e34069c CL |
1500 | ifmgd = &sdata->u.mgd; |
1501 | ||
965bedad JB |
1502 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1503 | return; | |
1504 | ||
09b85568 | 1505 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1506 | /* don't enter PS if TX frames are pending */ |
1507 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1508 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1509 | msecs_to_jiffies( | |
1510 | local->hw.conf.dynamic_ps_timeout)); | |
1511 | return; | |
1512 | } | |
77b7023a AN |
1513 | |
1514 | /* | |
1515 | * transmission can be stopped by others which leads to | |
1516 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1517 | * is not the actual idle state. | |
1518 | */ | |
1519 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1520 | for (q = 0; q < local->hw.queues; q++) { | |
1521 | if (local->queue_stop_reasons[q]) { | |
1522 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1523 | flags); | |
1524 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1525 | msecs_to_jiffies( | |
1526 | local->hw.conf.dynamic_ps_timeout)); | |
1527 | return; | |
1528 | } | |
1529 | } | |
1530 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1531 | } |
1ddc2867 | 1532 | |
375177bf | 1533 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1534 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1535 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1536 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1537 | msecs_to_jiffies( | |
1538 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1539 | } else { |
e8306f98 VN |
1540 | ieee80211_send_nullfunc(local, sdata, 1); |
1541 | /* Flush to get the tx status of nullfunc frame */ | |
39ecc01d | 1542 | ieee80211_flush_queues(local, sdata); |
e8306f98 | 1543 | } |
f3e85b9e VN |
1544 | } |
1545 | ||
2a13052f JO |
1546 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1547 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1548 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1549 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1550 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1551 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1552 | } | |
965bedad JB |
1553 | } |
1554 | ||
1555 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1556 | { | |
1557 | struct ieee80211_local *local = (void *) data; | |
1558 | ||
78f1a8b7 | 1559 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1560 | return; |
1561 | ||
42935eca | 1562 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1563 | } |
1564 | ||
164eb02d SW |
1565 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1566 | { | |
1567 | struct delayed_work *delayed_work = | |
1568 | container_of(work, struct delayed_work, work); | |
1569 | struct ieee80211_sub_if_data *sdata = | |
1570 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1571 | dfs_cac_timer_work); | |
1572 | ||
1573 | ieee80211_vif_release_channel(sdata); | |
1574 | ||
1575 | cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL); | |
1576 | } | |
1577 | ||
60f8b39c | 1578 | /* MLME */ |
7d25745d | 1579 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1580 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1581 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1582 | { |
f0706e82 | 1583 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1584 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1585 | size_t left; |
1586 | int count; | |
4a3cb702 JB |
1587 | const u8 *pos; |
1588 | u8 uapsd_queues = 0; | |
f0706e82 | 1589 | |
e1b3ec1a | 1590 | if (!local->ops->conf_tx) |
7d25745d | 1591 | return false; |
e1b3ec1a | 1592 | |
32c5057b | 1593 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1594 | return false; |
3434fbd3 JB |
1595 | |
1596 | if (!wmm_param) | |
7d25745d | 1597 | return false; |
3434fbd3 | 1598 | |
f0706e82 | 1599 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1600 | return false; |
ab13315a KV |
1601 | |
1602 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1603 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1604 | |
f0706e82 | 1605 | count = wmm_param[6] & 0x0f; |
46900298 | 1606 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1607 | return false; |
46900298 | 1608 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1609 | |
1610 | pos = wmm_param + 8; | |
1611 | left = wmm_param_len - 8; | |
1612 | ||
1613 | memset(¶ms, 0, sizeof(params)); | |
1614 | ||
00e96dec | 1615 | sdata->wmm_acm = 0; |
f0706e82 JB |
1616 | for (; left >= 4; left -= 4, pos += 4) { |
1617 | int aci = (pos[0] >> 5) & 0x03; | |
1618 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1619 | bool uapsd = false; |
f0706e82 JB |
1620 | int queue; |
1621 | ||
1622 | switch (aci) { | |
0eeb59fe | 1623 | case 1: /* AC_BK */ |
e100bb64 | 1624 | queue = 3; |
988c0f72 | 1625 | if (acm) |
00e96dec | 1626 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1627 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1628 | uapsd = true; | |
f0706e82 | 1629 | break; |
0eeb59fe | 1630 | case 2: /* AC_VI */ |
e100bb64 | 1631 | queue = 1; |
988c0f72 | 1632 | if (acm) |
00e96dec | 1633 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1634 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1635 | uapsd = true; | |
f0706e82 | 1636 | break; |
0eeb59fe | 1637 | case 3: /* AC_VO */ |
e100bb64 | 1638 | queue = 0; |
988c0f72 | 1639 | if (acm) |
00e96dec | 1640 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1641 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1642 | uapsd = true; | |
f0706e82 | 1643 | break; |
0eeb59fe | 1644 | case 0: /* AC_BE */ |
f0706e82 | 1645 | default: |
e100bb64 | 1646 | queue = 2; |
988c0f72 | 1647 | if (acm) |
00e96dec | 1648 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1649 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1650 | uapsd = true; | |
f0706e82 JB |
1651 | break; |
1652 | } | |
1653 | ||
1654 | params.aifs = pos[0] & 0x0f; | |
1655 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1656 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1657 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1658 | params.acm = acm; |
ab13315a KV |
1659 | params.uapsd = uapsd; |
1660 | ||
bdcbd8e0 JB |
1661 | mlme_dbg(sdata, |
1662 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1663 | queue, aci, acm, | |
1664 | params.aifs, params.cw_min, params.cw_max, | |
1665 | params.txop, params.uapsd); | |
f6f3def3 EP |
1666 | sdata->tx_conf[queue] = params; |
1667 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1668 | sdata_err(sdata, |
1669 | "failed to set TX queue parameters for queue %d\n", | |
1670 | queue); | |
f0706e82 | 1671 | } |
e1b3ec1a SG |
1672 | |
1673 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1674 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1675 | return true; |
f0706e82 JB |
1676 | } |
1677 | ||
925e64c3 SG |
1678 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1679 | { | |
1680 | lockdep_assert_held(&sdata->local->mtx); | |
1681 | ||
1682 | sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
1683 | IEEE80211_STA_BEACON_POLL); | |
1684 | ieee80211_run_deferred_scan(sdata->local); | |
1685 | } | |
1686 | ||
1687 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1688 | { | |
1689 | mutex_lock(&sdata->local->mtx); | |
1690 | __ieee80211_stop_poll(sdata); | |
1691 | mutex_unlock(&sdata->local->mtx); | |
1692 | } | |
1693 | ||
7a5158ef JB |
1694 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1695 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1696 | { |
bda3933a | 1697 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1698 | u32 changed = 0; |
7a5158ef JB |
1699 | bool use_protection; |
1700 | bool use_short_preamble; | |
1701 | bool use_short_slot; | |
1702 | ||
1703 | if (erp_valid) { | |
1704 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1705 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1706 | } else { | |
1707 | use_protection = false; | |
1708 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1709 | } | |
1710 | ||
1711 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1712 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1713 | use_short_slot = true; |
5628221c | 1714 | |
471b3efd | 1715 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1716 | bss_conf->use_cts_prot = use_protection; |
1717 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1718 | } |
7e9ed188 | 1719 | |
d43c7b37 | 1720 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1721 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1722 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1723 | } |
d9430a32 | 1724 | |
7a5158ef | 1725 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1726 | bss_conf->use_short_slot = use_short_slot; |
1727 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1728 | } |
1729 | ||
1730 | return changed; | |
1731 | } | |
1732 | ||
f698d856 | 1733 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1734 | struct cfg80211_bss *cbss, |
ae5eb026 | 1735 | u32 bss_info_changed) |
f0706e82 | 1736 | { |
0c1ad2ca | 1737 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1738 | struct ieee80211_local *local = sdata->local; |
68542962 | 1739 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1740 | |
ae5eb026 | 1741 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1742 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1743 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1744 | |
7ccc8bd7 | 1745 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1746 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1747 | |
0c1ad2ca JB |
1748 | sdata->u.mgd.associated = cbss; |
1749 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1750 | |
17e4ec14 JM |
1751 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1752 | ||
488dd7b5 | 1753 | if (sdata->vif.p2p) { |
9caf0364 | 1754 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1755 | |
9caf0364 JB |
1756 | rcu_read_lock(); |
1757 | ies = rcu_dereference(cbss->ies); | |
1758 | if (ies) { | |
9caf0364 JB |
1759 | int ret; |
1760 | ||
1761 | ret = cfg80211_get_p2p_attr( | |
1762 | ies->data, ies->len, | |
1763 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1764 | (u8 *) &bss_conf->p2p_noa_attr, |
1765 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1766 | if (ret >= 2) { |
67baf663 JD |
1767 | sdata->u.mgd.p2p_noa_index = |
1768 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1769 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1770 | } |
488dd7b5 | 1771 | } |
9caf0364 | 1772 | rcu_read_unlock(); |
488dd7b5 JB |
1773 | } |
1774 | ||
b291ba11 | 1775 | /* just to be sure */ |
925e64c3 | 1776 | ieee80211_stop_poll(sdata); |
b291ba11 | 1777 | |
9ac19a90 | 1778 | ieee80211_led_assoc(local, 1); |
9306102e | 1779 | |
989c6505 | 1780 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1781 | /* |
1782 | * If the AP is buggy we may get here with no DTIM period | |
1783 | * known, so assume it's 1 which is the only safe assumption | |
1784 | * in that case, although if the TIM IE is broken powersave | |
1785 | * probably just won't work at all. | |
1786 | */ | |
1787 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1788 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1789 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1790 | } else { |
817cee76 | 1791 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1792 | bss_conf->dtim_period = 0; |
826262c3 | 1793 | } |
e5b900d2 | 1794 | |
68542962 | 1795 | bss_conf->assoc = 1; |
9cef8737 | 1796 | |
a97c13c3 | 1797 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1798 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1799 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1800 | bss_info_changed |= BSS_CHANGED_CQM; |
1801 | ||
68542962 | 1802 | /* Enable ARP filtering */ |
0f19b41e | 1803 | if (bss_conf->arp_addr_cnt) |
68542962 | 1804 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1805 | |
ae5eb026 | 1806 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1807 | |
056508dc JB |
1808 | mutex_lock(&local->iflist_mtx); |
1809 | ieee80211_recalc_ps(local, -1); | |
1810 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1811 | |
04ecd257 | 1812 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1813 | ieee80211_recalc_ps_vif(sdata); |
1814 | ||
9ac19a90 | 1815 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1816 | } |
1817 | ||
e69e95db | 1818 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1819 | u16 stype, u16 reason, bool tx, |
1820 | u8 *frame_buf) | |
aa458d17 | 1821 | { |
46900298 | 1822 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1823 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1824 | u32 changed = 0; |
aa458d17 | 1825 | |
8d61ffa5 | 1826 | sdata_assert_lock(sdata); |
77fdaa12 | 1827 | |
37ad3888 JB |
1828 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1829 | return; | |
1830 | ||
b291ba11 JB |
1831 | if (WARN_ON(!ifmgd->associated)) |
1832 | return; | |
1833 | ||
79543d8e DS |
1834 | ieee80211_stop_poll(sdata); |
1835 | ||
77fdaa12 | 1836 | ifmgd->associated = NULL; |
aa458d17 TW |
1837 | netif_carrier_off(sdata->dev); |
1838 | ||
88bc40e8 EP |
1839 | /* |
1840 | * if we want to get out of ps before disassoc (why?) we have | |
1841 | * to do it before sending disassoc, as otherwise the null-packet | |
1842 | * won't be valid. | |
1843 | */ | |
1844 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1845 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1846 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1847 | } | |
1848 | local->ps_sdata = NULL; | |
1849 | ||
ab095877 EP |
1850 | /* disable per-vif ps */ |
1851 | ieee80211_recalc_ps_vif(sdata); | |
1852 | ||
f823981e EP |
1853 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1854 | if (tx) | |
39ecc01d | 1855 | ieee80211_flush_queues(local, sdata); |
f823981e | 1856 | |
37ad3888 JB |
1857 | /* deauthenticate/disassociate now */ |
1858 | if (tx || frame_buf) | |
88a9e31c EP |
1859 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1860 | reason, tx, frame_buf); | |
37ad3888 JB |
1861 | |
1862 | /* flush out frame */ | |
1863 | if (tx) | |
39ecc01d | 1864 | ieee80211_flush_queues(local, sdata); |
37ad3888 | 1865 | |
88a9e31c EP |
1866 | /* clear bssid only after building the needed mgmt frames */ |
1867 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1868 | ||
37ad3888 | 1869 | /* remove AP and TDLS peers */ |
051007d9 | 1870 | sta_info_flush_defer(sdata); |
37ad3888 JB |
1871 | |
1872 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1873 | changed |= ieee80211_reset_erp_info(sdata); |
1874 | ||
f5e5bf25 | 1875 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1876 | changed |= BSS_CHANGED_ASSOC; |
1877 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1878 | |
67baf663 JD |
1879 | ifmgd->p2p_noa_index = -1; |
1880 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
1881 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 1882 | |
dd5ecfea | 1883 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
1884 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1885 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
1886 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
1887 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 1888 | |
1ea6f9c0 | 1889 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1890 | |
520eb820 KV |
1891 | del_timer_sync(&local->dynamic_ps_timer); |
1892 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1893 | ||
68542962 | 1894 | /* Disable ARP filtering */ |
0f19b41e | 1895 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1896 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1897 | |
3abead59 JB |
1898 | sdata->vif.bss_conf.qos = false; |
1899 | changed |= BSS_CHANGED_QOS; | |
1900 | ||
0aaffa9b JB |
1901 | /* The BSSID (not really interesting) and HT changed */ |
1902 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1903 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1904 | |
3abead59 JB |
1905 | /* disassociated - set to defaults now */ |
1906 | ieee80211_set_wmm_default(sdata, false); | |
1907 | ||
b9dcf712 JB |
1908 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1909 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1910 | del_timer_sync(&sdata->u.mgd.timer); | |
1911 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 1912 | |
826262c3 | 1913 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
1914 | sdata->vif.bss_conf.beacon_rate = NULL; |
1915 | ||
989c6505 | 1916 | ifmgd->have_beacon = false; |
826262c3 | 1917 | |
028e8da0 JB |
1918 | ifmgd->flags = 0; |
1919 | ieee80211_vif_release_channel(sdata); | |
aa458d17 | 1920 | } |
f0706e82 | 1921 | |
3cf335d5 KV |
1922 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1923 | struct ieee80211_hdr *hdr) | |
1924 | { | |
1925 | /* | |
1926 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1927 | * from AP because we know that the connection is working both ways | |
1928 | * at that time. But multicast frames (and hence also beacons) must | |
1929 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1930 | * data idle periods for sending the periodic probe request to the |
1931 | * AP we're connected to. | |
3cf335d5 | 1932 | */ |
b291ba11 JB |
1933 | if (is_multicast_ether_addr(hdr->addr1)) |
1934 | return; | |
1935 | ||
be099e82 | 1936 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1937 | } |
f0706e82 | 1938 | |
4e5ff376 FF |
1939 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1940 | { | |
1941 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1942 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1943 | |
133d40f9 | 1944 | mutex_lock(&local->mtx); |
4e5ff376 | 1945 | if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
133d40f9 SG |
1946 | IEEE80211_STA_CONNECTION_POLL))) { |
1947 | mutex_unlock(&local->mtx); | |
1948 | return; | |
1949 | } | |
4e5ff376 | 1950 | |
925e64c3 | 1951 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1952 | |
1953 | mutex_lock(&local->iflist_mtx); | |
1954 | ieee80211_recalc_ps(local, -1); | |
1955 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1956 | |
1957 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1958 | goto out; |
4e5ff376 FF |
1959 | |
1960 | /* | |
1961 | * We've received a probe response, but are not sure whether | |
1962 | * we have or will be receiving any beacons or data, so let's | |
1963 | * schedule the timers again, just in case. | |
1964 | */ | |
1965 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1966 | ||
1967 | mod_timer(&ifmgd->conn_mon_timer, | |
1968 | round_jiffies_up(jiffies + | |
1969 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1970 | out: |
133d40f9 | 1971 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1972 | } |
1973 | ||
1974 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1975 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1976 | { |
75706d0e | 1977 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1978 | return; |
1979 | ||
4e5ff376 FF |
1980 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
1981 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 1982 | if (ack) |
cab1c7fd | 1983 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
1984 | else |
1985 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 1986 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 1987 | return; |
4e5ff376 | 1988 | } |
cab1c7fd WD |
1989 | |
1990 | if (ack) | |
1991 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1992 | } |
1993 | ||
a43abf29 ML |
1994 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1995 | { | |
1996 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1997 | const u8 *ssid; | |
f01a067d | 1998 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1999 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
2000 | |
2001 | /* | |
2002 | * Try sending broadcast probe requests for the last three | |
2003 | * probe requests after the first ones failed since some | |
2004 | * buggy APs only support broadcast probe requests. | |
2005 | */ | |
2006 | if (ifmgd->probe_send_count >= unicast_limit) | |
2007 | dst = NULL; | |
a43abf29 | 2008 | |
4e5ff376 FF |
2009 | /* |
2010 | * When the hardware reports an accurate Tx ACK status, it's | |
2011 | * better to send a nullfunc frame instead of a probe request, | |
2012 | * as it will kick us off the AP quickly if we aren't associated | |
2013 | * anymore. The timeout will be reset if the frame is ACKed by | |
2014 | * the AP. | |
2015 | */ | |
992e68bf SD |
2016 | ifmgd->probe_send_count++; |
2017 | ||
04ac3c0e FF |
2018 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
2019 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 2020 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 2021 | } else { |
88c868c4 SG |
2022 | int ssid_len; |
2023 | ||
9caf0364 | 2024 | rcu_read_lock(); |
4e5ff376 | 2025 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2026 | if (WARN_ON_ONCE(ssid == NULL)) |
2027 | ssid_len = 0; | |
2028 | else | |
2029 | ssid_len = ssid[1]; | |
2030 | ||
2031 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 2032 | 0, (u32) -1, true, 0, |
55de908a | 2033 | ifmgd->associated->channel, false); |
9caf0364 | 2034 | rcu_read_unlock(); |
4e5ff376 | 2035 | } |
a43abf29 | 2036 | |
180205bd | 2037 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2038 | run_again(sdata, ifmgd->probe_timeout); |
f69b9c79 | 2039 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
39ecc01d | 2040 | ieee80211_flush_queues(sdata->local, sdata); |
a43abf29 ML |
2041 | } |
2042 | ||
b291ba11 JB |
2043 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2044 | bool beacon) | |
04de8381 | 2045 | { |
04de8381 | 2046 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2047 | bool already = false; |
34bfc411 | 2048 | |
9607e6b6 | 2049 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2050 | return; |
2051 | ||
8d61ffa5 | 2052 | sdata_lock(sdata); |
77fdaa12 JB |
2053 | |
2054 | if (!ifmgd->associated) | |
2055 | goto out; | |
2056 | ||
133d40f9 SG |
2057 | mutex_lock(&sdata->local->mtx); |
2058 | ||
2059 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2060 | mutex_unlock(&sdata->local->mtx); | |
2061 | goto out; | |
2062 | } | |
2063 | ||
a13fbe54 | 2064 | if (beacon) { |
bdcbd8e0 | 2065 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2066 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2067 | beacon_loss_count); | |
bdcbd8e0 | 2068 | |
a13fbe54 BG |
2069 | ieee80211_cqm_rssi_notify(&sdata->vif, |
2070 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, | |
2071 | GFP_KERNEL); | |
2072 | } | |
04de8381 | 2073 | |
b291ba11 JB |
2074 | /* |
2075 | * The driver/our work has already reported this event or the | |
2076 | * connection monitoring has kicked in and we have already sent | |
2077 | * a probe request. Or maybe the AP died and the driver keeps | |
2078 | * reporting until we disassociate... | |
2079 | * | |
2080 | * In either case we have to ignore the current call to this | |
2081 | * function (except for setting the correct probe reason bit) | |
2082 | * because otherwise we would reset the timer every time and | |
2083 | * never check whether we received a probe response! | |
2084 | */ | |
2085 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | | |
2086 | IEEE80211_STA_CONNECTION_POLL)) | |
2087 | already = true; | |
2088 | ||
2089 | if (beacon) | |
2090 | ifmgd->flags |= IEEE80211_STA_BEACON_POLL; | |
2091 | else | |
2092 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; | |
2093 | ||
133d40f9 SG |
2094 | mutex_unlock(&sdata->local->mtx); |
2095 | ||
b291ba11 JB |
2096 | if (already) |
2097 | goto out; | |
2098 | ||
4e751843 JB |
2099 | mutex_lock(&sdata->local->iflist_mtx); |
2100 | ieee80211_recalc_ps(sdata->local, -1); | |
2101 | mutex_unlock(&sdata->local->iflist_mtx); | |
2102 | ||
a43abf29 ML |
2103 | ifmgd->probe_send_count = 0; |
2104 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2105 | out: |
8d61ffa5 | 2106 | sdata_unlock(sdata); |
04de8381 KV |
2107 | } |
2108 | ||
a619a4c0 JO |
2109 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2110 | struct ieee80211_vif *vif) | |
2111 | { | |
2112 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2113 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2114 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2115 | struct sk_buff *skb; |
2116 | const u8 *ssid; | |
88c868c4 | 2117 | int ssid_len; |
a619a4c0 JO |
2118 | |
2119 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2120 | return NULL; | |
2121 | ||
8d61ffa5 | 2122 | sdata_assert_lock(sdata); |
a619a4c0 | 2123 | |
d9b3b28b EP |
2124 | if (ifmgd->associated) |
2125 | cbss = ifmgd->associated; | |
2126 | else if (ifmgd->auth_data) | |
2127 | cbss = ifmgd->auth_data->bss; | |
2128 | else if (ifmgd->assoc_data) | |
2129 | cbss = ifmgd->assoc_data->bss; | |
2130 | else | |
a619a4c0 JO |
2131 | return NULL; |
2132 | ||
9caf0364 | 2133 | rcu_read_lock(); |
d9b3b28b | 2134 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2135 | if (WARN_ON_ONCE(ssid == NULL)) |
2136 | ssid_len = 0; | |
2137 | else | |
2138 | ssid_len = ssid[1]; | |
2139 | ||
d9b3b28b | 2140 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 2141 | (u32) -1, cbss->channel, |
6b77863b | 2142 | ssid + 2, ssid_len, |
85a237fe | 2143 | NULL, 0, true); |
9caf0364 | 2144 | rcu_read_unlock(); |
a619a4c0 JO |
2145 | |
2146 | return skb; | |
2147 | } | |
2148 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2149 | ||
eef9e54c | 2150 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 JO |
2151 | { |
2152 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
6ae16775 | 2153 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2154 | |
8d61ffa5 | 2155 | sdata_lock(sdata); |
1e4dcd01 | 2156 | if (!ifmgd->associated) { |
8d61ffa5 | 2157 | sdata_unlock(sdata); |
1e4dcd01 JO |
2158 | return; |
2159 | } | |
2160 | ||
37ad3888 JB |
2161 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2162 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2163 | true, frame_buf); |
882a7c69 | 2164 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
5b36ebd8 | 2165 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
445ea4e8 | 2166 | IEEE80211_MAX_QUEUE_MAP, |
5b36ebd8 | 2167 | IEEE80211_QUEUE_STOP_REASON_CSA); |
7da7cc1d | 2168 | |
6ff57cf8 JB |
2169 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
2170 | IEEE80211_DEAUTH_FRAME_LEN); | |
8d61ffa5 | 2171 | sdata_unlock(sdata); |
1e4dcd01 JO |
2172 | } |
2173 | ||
cc74c0c7 | 2174 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2175 | { |
2176 | struct ieee80211_sub_if_data *sdata = | |
2177 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2178 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2179 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2180 | struct sta_info *sta; | |
2181 | ||
2182 | if (ifmgd->associated) { | |
30fa9047 | 2183 | rcu_read_lock(); |
a85e1d55 PS |
2184 | sta = sta_info_get(sdata, ifmgd->bssid); |
2185 | if (sta) | |
2186 | sta->beacon_loss_count++; | |
30fa9047 | 2187 | rcu_read_unlock(); |
a85e1d55 | 2188 | } |
b291ba11 | 2189 | |
682bd38b | 2190 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2191 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2192 | ifmgd->bssid); | |
eef9e54c | 2193 | __ieee80211_disconnect(sdata); |
882a7c69 | 2194 | } else { |
1e4dcd01 | 2195 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2196 | } |
2197 | } | |
2198 | ||
2199 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2200 | { | |
2201 | struct ieee80211_sub_if_data *sdata = | |
2202 | container_of(work, struct ieee80211_sub_if_data, | |
2203 | u.mgd.csa_connection_drop_work); | |
2204 | ||
eef9e54c | 2205 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2206 | } |
2207 | ||
04de8381 KV |
2208 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2209 | { | |
2210 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2211 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2212 | |
b5878a2d JB |
2213 | trace_api_beacon_loss(sdata); |
2214 | ||
682bd38b | 2215 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2216 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2217 | } |
2218 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2219 | ||
1e4dcd01 JO |
2220 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2221 | { | |
2222 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2223 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2224 | ||
b5878a2d JB |
2225 | trace_api_connection_loss(sdata); |
2226 | ||
682bd38b | 2227 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2228 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2229 | } | |
2230 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2231 | ||
2232 | ||
66e67e41 JB |
2233 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2234 | bool assoc) | |
2235 | { | |
2236 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2237 | ||
8d61ffa5 | 2238 | sdata_assert_lock(sdata); |
66e67e41 | 2239 | |
66e67e41 JB |
2240 | if (!assoc) { |
2241 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
2242 | ||
2243 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2244 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2245 | sdata->u.mgd.flags = 0; |
55de908a | 2246 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
2247 | } |
2248 | ||
5b112d3d | 2249 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2250 | kfree(auth_data); |
2251 | sdata->u.mgd.auth_data = NULL; | |
2252 | } | |
2253 | ||
2254 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2255 | struct ieee80211_mgmt *mgmt, size_t len) | |
2256 | { | |
1672c0e3 | 2257 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2258 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2259 | u8 *pos; | |
2260 | struct ieee802_11_elems elems; | |
1672c0e3 | 2261 | u32 tx_flags = 0; |
66e67e41 JB |
2262 | |
2263 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2264 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2265 | if (!elems.challenge) |
2266 | return; | |
2267 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2268 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2269 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2270 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2271 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2272 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2273 | elems.challenge - 2, elems.challenge_len + 2, |
2274 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2275 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2276 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2277 | } |
2278 | ||
8d61ffa5 JB |
2279 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2280 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2281 | { |
2282 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2283 | u8 bssid[ETH_ALEN]; | |
2284 | u16 auth_alg, auth_transaction, status_code; | |
2285 | struct sta_info *sta; | |
2286 | ||
8d61ffa5 | 2287 | sdata_assert_lock(sdata); |
66e67e41 JB |
2288 | |
2289 | if (len < 24 + 6) | |
8d61ffa5 | 2290 | return; |
66e67e41 JB |
2291 | |
2292 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2293 | return; |
66e67e41 JB |
2294 | |
2295 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2296 | ||
b203ca39 | 2297 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2298 | return; |
66e67e41 JB |
2299 | |
2300 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2301 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2302 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2303 | ||
2304 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2305 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2306 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2307 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2308 | auth_transaction, | |
2309 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2310 | return; |
0f4126e8 | 2311 | } |
66e67e41 JB |
2312 | |
2313 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2314 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2315 | mgmt->sa, status_code); | |
dac211ec | 2316 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2317 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2318 | return; |
66e67e41 JB |
2319 | } |
2320 | ||
2321 | switch (ifmgd->auth_data->algorithm) { | |
2322 | case WLAN_AUTH_OPEN: | |
2323 | case WLAN_AUTH_LEAP: | |
2324 | case WLAN_AUTH_FT: | |
6b8ece3a | 2325 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2326 | break; |
2327 | case WLAN_AUTH_SHARED_KEY: | |
2328 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2329 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2330 | /* need another frame */ | |
8d61ffa5 | 2331 | return; |
66e67e41 JB |
2332 | } |
2333 | break; | |
2334 | default: | |
2335 | WARN_ONCE(1, "invalid auth alg %d", | |
2336 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2337 | return; |
66e67e41 JB |
2338 | } |
2339 | ||
bdcbd8e0 | 2340 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2341 | ifmgd->auth_data->done = true; |
2342 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2343 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2344 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2345 | |
6b8ece3a JM |
2346 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2347 | ifmgd->auth_data->expected_transaction != 2) { | |
2348 | /* | |
2349 | * Report auth frame to user space for processing since another | |
2350 | * round of Authentication frames is still needed. | |
2351 | */ | |
6ff57cf8 | 2352 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2353 | return; |
6b8ece3a JM |
2354 | } |
2355 | ||
66e67e41 JB |
2356 | /* move station state to auth */ |
2357 | mutex_lock(&sdata->local->sta_mtx); | |
2358 | sta = sta_info_get(sdata, bssid); | |
2359 | if (!sta) { | |
2360 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2361 | goto out_err; | |
2362 | } | |
2363 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2364 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2365 | goto out_err; |
2366 | } | |
2367 | mutex_unlock(&sdata->local->sta_mtx); | |
2368 | ||
6ff57cf8 | 2369 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2370 | return; |
66e67e41 JB |
2371 | out_err: |
2372 | mutex_unlock(&sdata->local->sta_mtx); | |
2373 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2374 | } |
2375 | ||
2376 | ||
8d61ffa5 JB |
2377 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2378 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2379 | { |
46900298 | 2380 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2381 | const u8 *bssid = NULL; |
f0706e82 JB |
2382 | u16 reason_code; |
2383 | ||
8d61ffa5 | 2384 | sdata_assert_lock(sdata); |
66e67e41 | 2385 | |
f4ea83dd | 2386 | if (len < 24 + 2) |
8d61ffa5 | 2387 | return; |
f0706e82 | 2388 | |
66e67e41 | 2389 | if (!ifmgd->associated || |
b203ca39 | 2390 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2391 | return; |
77fdaa12 | 2392 | |
0c1ad2ca | 2393 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2394 | |
2395 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2396 | ||
bdcbd8e0 JB |
2397 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n", |
2398 | bssid, reason_code); | |
77fdaa12 | 2399 | |
37ad3888 JB |
2400 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2401 | ||
6ff57cf8 | 2402 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2403 | } |
2404 | ||
2405 | ||
8d61ffa5 JB |
2406 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2407 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2408 | { |
46900298 | 2409 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2410 | u16 reason_code; |
2411 | ||
8d61ffa5 | 2412 | sdata_assert_lock(sdata); |
77fdaa12 | 2413 | |
66e67e41 | 2414 | if (len < 24 + 2) |
8d61ffa5 | 2415 | return; |
77fdaa12 | 2416 | |
66e67e41 | 2417 | if (!ifmgd->associated || |
b203ca39 | 2418 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2419 | return; |
f0706e82 JB |
2420 | |
2421 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2422 | ||
bdcbd8e0 JB |
2423 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2424 | mgmt->sa, reason_code); | |
f0706e82 | 2425 | |
37ad3888 JB |
2426 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2427 | ||
6ff57cf8 | 2428 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2429 | } |
2430 | ||
c74d084f CL |
2431 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2432 | u8 *supp_rates, unsigned int supp_rates_len, | |
2433 | u32 *rates, u32 *basic_rates, | |
2434 | bool *have_higher_than_11mbit, | |
2435 | int *min_rate, int *min_rate_index) | |
2436 | { | |
2437 | int i, j; | |
2438 | ||
2439 | for (i = 0; i < supp_rates_len; i++) { | |
2440 | int rate = (supp_rates[i] & 0x7f) * 5; | |
2441 | bool is_basic = !!(supp_rates[i] & 0x80); | |
2442 | ||
2443 | if (rate > 110) | |
2444 | *have_higher_than_11mbit = true; | |
2445 | ||
2446 | /* | |
2447 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2448 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2449 | * | |
2450 | * Note: Even through the membership selector and the basic | |
2451 | * rate flag share the same bit, they are not exactly | |
2452 | * the same. | |
2453 | */ | |
2454 | if (!!(supp_rates[i] & 0x80) && | |
2455 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2456 | continue; | |
2457 | ||
2458 | for (j = 0; j < sband->n_bitrates; j++) { | |
2459 | if (sband->bitrates[j].bitrate == rate) { | |
2460 | *rates |= BIT(j); | |
2461 | if (is_basic) | |
2462 | *basic_rates |= BIT(j); | |
2463 | if (rate < *min_rate) { | |
2464 | *min_rate = rate; | |
2465 | *min_rate_index = j; | |
2466 | } | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | } | |
2471 | } | |
f0706e82 | 2472 | |
66e67e41 JB |
2473 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2474 | bool assoc) | |
2475 | { | |
2476 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2477 | ||
8d61ffa5 | 2478 | sdata_assert_lock(sdata); |
66e67e41 | 2479 | |
66e67e41 JB |
2480 | if (!assoc) { |
2481 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2482 | ||
2483 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2484 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2485 | sdata->u.mgd.flags = 0; |
55de908a | 2486 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
2487 | } |
2488 | ||
2489 | kfree(assoc_data); | |
2490 | sdata->u.mgd.assoc_data = NULL; | |
2491 | } | |
2492 | ||
2493 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2494 | struct cfg80211_bss *cbss, | |
af6b6374 | 2495 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2496 | { |
46900298 | 2497 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2498 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2499 | struct ieee80211_supported_band *sband; |
f0706e82 | 2500 | struct sta_info *sta; |
af6b6374 | 2501 | u8 *pos; |
af6b6374 | 2502 | u16 capab_info, aid; |
f0706e82 | 2503 | struct ieee802_11_elems elems; |
bda3933a | 2504 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2505 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2506 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2507 | u32 changed = 0; |
c74d084f | 2508 | int err; |
35d865af | 2509 | bool ret; |
f0706e82 | 2510 | |
af6b6374 | 2511 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2512 | |
f0706e82 | 2513 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2514 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2515 | |
1dd84aa2 | 2516 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2517 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2518 | aid); | |
1dd84aa2 JB |
2519 | aid &= ~(BIT(15) | BIT(14)); |
2520 | ||
05cb9108 JB |
2521 | ifmgd->broken_ap = false; |
2522 | ||
2523 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2524 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2525 | aid); | |
05cb9108 JB |
2526 | aid = 0; |
2527 | ifmgd->broken_ap = true; | |
2528 | } | |
2529 | ||
af6b6374 | 2530 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2531 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2532 | |
f0706e82 | 2533 | if (!elems.supp_rates) { |
bdcbd8e0 | 2534 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2535 | return false; |
f0706e82 JB |
2536 | } |
2537 | ||
46900298 | 2538 | ifmgd->aid = aid; |
f0706e82 | 2539 | |
35d865af JB |
2540 | /* |
2541 | * Some APs are erroneously not including some information in their | |
2542 | * (re)association response frames. Try to recover by using the data | |
2543 | * from the beacon or probe response. This seems to afflict mobile | |
2544 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2545 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2546 | */ | |
2547 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2548 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2549 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2550 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2551 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2552 | const struct cfg80211_bss_ies *ies; | |
2553 | struct ieee802_11_elems bss_elems; | |
2554 | ||
2555 | rcu_read_lock(); | |
2556 | ies = rcu_dereference(cbss->ies); | |
2557 | if (ies) | |
2558 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2559 | GFP_ATOMIC); | |
2560 | rcu_read_unlock(); | |
2561 | if (!bss_ies) | |
2562 | return false; | |
2563 | ||
2564 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2565 | false, &bss_elems); | |
2566 | if (assoc_data->wmm && | |
2567 | !elems.wmm_param && bss_elems.wmm_param) { | |
2568 | elems.wmm_param = bss_elems.wmm_param; | |
2569 | sdata_info(sdata, | |
2570 | "AP bug: WMM param missing from AssocResp\n"); | |
2571 | } | |
2572 | ||
2573 | /* | |
2574 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2575 | * have to include the IEs in the (re)association response. | |
2576 | */ | |
2577 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2578 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2579 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2580 | sdata_info(sdata, | |
2581 | "AP bug: HT capability missing from AssocResp\n"); | |
2582 | } | |
2583 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2584 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2585 | elems.ht_operation = bss_elems.ht_operation; | |
2586 | sdata_info(sdata, | |
2587 | "AP bug: HT operation missing from AssocResp\n"); | |
2588 | } | |
2589 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2590 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2591 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2592 | sdata_info(sdata, | |
2593 | "AP bug: VHT capa missing from AssocResp\n"); | |
2594 | } | |
2595 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2596 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2597 | elems.vht_operation = bss_elems.vht_operation; | |
2598 | sdata_info(sdata, | |
2599 | "AP bug: VHT operation missing from AssocResp\n"); | |
2600 | } | |
2601 | } | |
2602 | ||
30eb1dc2 JB |
2603 | /* |
2604 | * We previously checked these in the beacon/probe response, so | |
2605 | * they should be present here. This is just a safety net. | |
2606 | */ | |
2607 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2608 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2609 | sdata_info(sdata, | |
35d865af JB |
2610 | "HT AP is missing WMM params or HT capability/operation\n"); |
2611 | ret = false; | |
2612 | goto out; | |
30eb1dc2 JB |
2613 | } |
2614 | ||
2615 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2616 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2617 | sdata_info(sdata, | |
35d865af JB |
2618 | "VHT AP is missing VHT capability/operation\n"); |
2619 | ret = false; | |
2620 | goto out; | |
30eb1dc2 JB |
2621 | } |
2622 | ||
2a33bee2 GE |
2623 | mutex_lock(&sdata->local->sta_mtx); |
2624 | /* | |
2625 | * station info was already allocated and inserted before | |
2626 | * the association and should be available to us | |
2627 | */ | |
7852e361 | 2628 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2629 | if (WARN_ON(!sta)) { |
2630 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2631 | ret = false; |
2632 | goto out; | |
77fdaa12 | 2633 | } |
05e5e883 | 2634 | |
55de908a | 2635 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2636 | |
30eb1dc2 | 2637 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2638 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2639 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2640 | elems.ht_cap_elem, sta); |
64f68e5d | 2641 | |
818255ea MP |
2642 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2643 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2644 | elems.vht_cap_elem, sta); |
818255ea | 2645 | |
30eb1dc2 JB |
2646 | /* |
2647 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2648 | * in their association response, so ignore that data for our own | |
2649 | * configuration. If it changed since the last beacon, we'll get the | |
2650 | * next beacon and update then. | |
2651 | */ | |
1128958d | 2652 | |
bee7f586 JB |
2653 | /* |
2654 | * If an operating mode notification IE is present, override the | |
2655 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2656 | * and use the # of streams from that element. | |
2657 | */ | |
2658 | if (elems.opmode_notif && | |
2659 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2660 | u8 nss; | |
2661 | ||
2662 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2663 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2664 | nss += 1; | |
2665 | sta->sta.rx_nss = nss; | |
2666 | } | |
2667 | ||
4b7679a5 | 2668 | rate_control_rate_init(sta); |
f0706e82 | 2669 | |
46900298 | 2670 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2671 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2672 | |
ddf4ac53 | 2673 | if (elems.wmm_param) |
c2c98fde | 2674 | set_sta_flag(sta, WLAN_STA_WME); |
ddf4ac53 | 2675 | |
3e4d40fa | 2676 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2677 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2678 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2679 | if (err) { | |
bdcbd8e0 JB |
2680 | sdata_info(sdata, |
2681 | "failed to move station %pM to desired state\n", | |
2682 | sta->sta.addr); | |
c8987876 JB |
2683 | WARN_ON(__sta_info_destroy(sta)); |
2684 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2685 | ret = false; |
2686 | goto out; | |
c8987876 JB |
2687 | } |
2688 | ||
7852e361 | 2689 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2690 | |
f2176d72 JO |
2691 | /* |
2692 | * Always handle WMM once after association regardless | |
2693 | * of the first value the AP uses. Setting -1 here has | |
2694 | * that effect because the AP values is an unsigned | |
2695 | * 4-bit value. | |
2696 | */ | |
2697 | ifmgd->wmm_last_param_set = -1; | |
2698 | ||
ddf4ac53 | 2699 | if (elems.wmm_param) |
4ced3f74 | 2700 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2701 | elems.wmm_param_len); |
aa837e1d | 2702 | else |
3abead59 JB |
2703 | ieee80211_set_wmm_default(sdata, false); |
2704 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2705 | |
60f8b39c JB |
2706 | /* set AID and assoc capability, |
2707 | * ieee80211_set_associated() will tell the driver */ | |
2708 | bss_conf->aid = aid; | |
2709 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2710 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2711 | |
d524215f FF |
2712 | /* |
2713 | * If we're using 4-addr mode, let the AP know that we're | |
2714 | * doing so, so that it can create the STA VLAN on its side | |
2715 | */ | |
2716 | if (ifmgd->use_4addr) | |
2717 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2718 | ||
15b7b062 | 2719 | /* |
b291ba11 JB |
2720 | * Start timer to probe the connection to the AP now. |
2721 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2722 | */ |
b291ba11 | 2723 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2724 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2725 | |
35d865af JB |
2726 | ret = true; |
2727 | out: | |
2728 | kfree(bss_ies); | |
2729 | return ret; | |
f0706e82 JB |
2730 | } |
2731 | ||
8d61ffa5 JB |
2732 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
2733 | struct ieee80211_mgmt *mgmt, | |
2734 | size_t len) | |
66e67e41 JB |
2735 | { |
2736 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2737 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2738 | u16 capab_info, status_code, aid; | |
2739 | struct ieee802_11_elems elems; | |
2740 | u8 *pos; | |
2741 | bool reassoc; | |
8d61ffa5 | 2742 | struct cfg80211_bss *bss; |
66e67e41 | 2743 | |
8d61ffa5 | 2744 | sdata_assert_lock(sdata); |
66e67e41 JB |
2745 | |
2746 | if (!assoc_data) | |
8d61ffa5 | 2747 | return; |
b203ca39 | 2748 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 2749 | return; |
66e67e41 JB |
2750 | |
2751 | /* | |
2752 | * AssocResp and ReassocResp have identical structure, so process both | |
2753 | * of them in this function. | |
2754 | */ | |
2755 | ||
2756 | if (len < 24 + 6) | |
8d61ffa5 | 2757 | return; |
66e67e41 JB |
2758 | |
2759 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2760 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2761 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2762 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2763 | ||
bdcbd8e0 JB |
2764 | sdata_info(sdata, |
2765 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2766 | reassoc ? "Rea" : "A", mgmt->sa, | |
2767 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2768 | |
2769 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 2770 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2771 | |
2772 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
2773 | elems.timeout_int && |
2774 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 2775 | u32 tu, ms; |
79ba1d89 | 2776 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 2777 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
2778 | sdata_info(sdata, |
2779 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2780 | mgmt->sa, tu, ms); | |
66e67e41 | 2781 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 2782 | assoc_data->timeout_started = true; |
66e67e41 | 2783 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
2784 | run_again(sdata, assoc_data->timeout); |
2785 | return; | |
66e67e41 JB |
2786 | } |
2787 | ||
8d61ffa5 | 2788 | bss = assoc_data->bss; |
66e67e41 JB |
2789 | |
2790 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2791 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2792 | mgmt->sa, status_code); | |
66e67e41 JB |
2793 | ieee80211_destroy_assoc_data(sdata, false); |
2794 | } else { | |
8d61ffa5 | 2795 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 2796 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 2797 | ieee80211_destroy_assoc_data(sdata, false); |
8d61ffa5 | 2798 | cfg80211_put_bss(sdata->local->hw.wiphy, bss); |
6ff57cf8 | 2799 | cfg80211_assoc_timeout(sdata->dev, mgmt->bssid); |
8d61ffa5 | 2800 | return; |
66e67e41 | 2801 | } |
635d999f | 2802 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2803 | |
2804 | /* | |
2805 | * destroy assoc_data afterwards, as otherwise an idle | |
2806 | * recalc after assoc_data is NULL but before associated | |
2807 | * is set can cause the interface to go idle | |
2808 | */ | |
2809 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2810 | } |
2811 | ||
6ff57cf8 | 2812 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); |
66e67e41 | 2813 | } |
8e3c1b77 | 2814 | |
98c8fccf | 2815 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2816 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2817 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2818 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2819 | { |
2820 | struct ieee80211_local *local = sdata->local; | |
2821 | int freq; | |
c2b13452 | 2822 | struct ieee80211_bss *bss; |
98c8fccf | 2823 | struct ieee80211_channel *channel; |
56007a02 | 2824 | |
8d61ffa5 | 2825 | sdata_assert_lock(sdata); |
b4f286a1 | 2826 | |
1cd8e88e | 2827 | if (elems->ds_params) |
59eb21a6 BR |
2828 | freq = ieee80211_channel_to_frequency(elems->ds_params[0], |
2829 | rx_status->band); | |
98c8fccf JB |
2830 | else |
2831 | freq = rx_status->freq; | |
2832 | ||
2833 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
2834 | ||
2835 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2836 | return; | |
2837 | ||
98c8fccf | 2838 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2839 | channel); |
817cee76 | 2840 | if (bss) { |
77fdaa12 | 2841 | ieee80211_rx_bss_put(local, bss); |
817cee76 AB |
2842 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
2843 | } | |
77fdaa12 | 2844 | |
37799e52 JB |
2845 | if (!sdata->u.mgd.associated || |
2846 | !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) | |
98c8fccf JB |
2847 | return; |
2848 | ||
04a161f4 JB |
2849 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2850 | elems, true); | |
b4f286a1 | 2851 | |
f0706e82 JB |
2852 | } |
2853 | ||
2854 | ||
f698d856 | 2855 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2856 | struct sk_buff *skb) |
f0706e82 | 2857 | { |
af6b6374 | 2858 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2859 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2860 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2861 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2862 | struct ieee802_11_elems elems; |
2863 | ||
15b7b062 KV |
2864 | ifmgd = &sdata->u.mgd; |
2865 | ||
8d61ffa5 | 2866 | sdata_assert_lock(sdata); |
77fdaa12 | 2867 | |
b203ca39 | 2868 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2869 | return; /* ignore ProbeResp to foreign address */ |
2870 | ||
ae6a44e3 EK |
2871 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2872 | if (baselen > len) | |
2873 | return; | |
2874 | ||
2875 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 2876 | false, &elems); |
ae6a44e3 | 2877 | |
d45c4172 | 2878 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2879 | |
77fdaa12 | 2880 | if (ifmgd->associated && |
b203ca39 | 2881 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2882 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2883 | |
2884 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2885 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2886 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2887 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2888 | ifmgd->auth_data->tries = 0; |
2889 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 2890 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2891 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2892 | } |
f0706e82 JB |
2893 | } |
2894 | ||
d91f36db JB |
2895 | /* |
2896 | * This is the canonical list of information elements we care about, | |
2897 | * the filter code also gives us all changes to the Microsoft OUI | |
2898 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2899 | * | |
2900 | * We implement beacon filtering in software since that means we can | |
2901 | * avoid processing the frame here and in cfg80211, and userspace | |
2902 | * will not be able to tell whether the hardware supports it or not. | |
2903 | * | |
2904 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2905 | * add items it requires. It also needs to be able to tell us to | |
2906 | * look out for other vendor IEs. | |
2907 | */ | |
2908 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2909 | (1ULL << WLAN_EID_COUNTRY) | |
2910 | (1ULL << WLAN_EID_ERP_INFO) | | |
2911 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2912 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2913 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2914 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2915 | |
8d61ffa5 JB |
2916 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
2917 | struct ieee80211_mgmt *mgmt, size_t len, | |
2918 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2919 | { |
d91f36db | 2920 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2921 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2922 | size_t baselen; |
2923 | struct ieee802_11_elems elems; | |
f698d856 | 2924 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2925 | struct ieee80211_chanctx_conf *chanctx_conf; |
2926 | struct ieee80211_channel *chan; | |
bee7f586 | 2927 | struct sta_info *sta; |
471b3efd | 2928 | u32 changed = 0; |
f87ad637 | 2929 | bool erp_valid; |
7a5158ef | 2930 | u8 erp_value = 0; |
d91f36db | 2931 | u32 ncrc; |
77fdaa12 | 2932 | u8 *bssid; |
8d61ffa5 | 2933 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 2934 | |
8d61ffa5 | 2935 | sdata_assert_lock(sdata); |
f0706e82 | 2936 | |
ae6a44e3 EK |
2937 | /* Process beacon from the current BSS */ |
2938 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2939 | if (baselen > len) | |
8d61ffa5 | 2940 | return; |
ae6a44e3 | 2941 | |
55de908a JB |
2942 | rcu_read_lock(); |
2943 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2944 | if (!chanctx_conf) { | |
2945 | rcu_read_unlock(); | |
8d61ffa5 | 2946 | return; |
55de908a JB |
2947 | } |
2948 | ||
4bf88530 | 2949 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 2950 | rcu_read_unlock(); |
8d61ffa5 | 2951 | return; |
55de908a | 2952 | } |
4bf88530 | 2953 | chan = chanctx_conf->def.chan; |
55de908a | 2954 | rcu_read_unlock(); |
f0706e82 | 2955 | |
c65dd147 | 2956 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2957 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 2958 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 2959 | len - baselen, false, &elems); |
77fdaa12 | 2960 | |
d45c4172 | 2961 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
2962 | if (elems.tim && !elems.parse_error) { |
2963 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
2964 | ifmgd->dtim_period = tim_ie->dtim_period; | |
2965 | } | |
989c6505 | 2966 | ifmgd->have_beacon = true; |
c65dd147 | 2967 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
2968 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
2969 | sdata->vif.bss_conf.sync_tsf = | |
2970 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2971 | sdata->vif.bss_conf.sync_device_ts = | |
2972 | rx_status->device_timestamp; | |
2973 | if (elems.tim) | |
2974 | sdata->vif.bss_conf.sync_dtim_count = | |
2975 | elems.tim->dtim_count; | |
2976 | else | |
2977 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
2978 | } | |
66e67e41 JB |
2979 | /* continue assoc process */ |
2980 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 2981 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
2982 | run_again(sdata, ifmgd->assoc_data->timeout); |
2983 | return; | |
66e67e41 | 2984 | } |
77fdaa12 | 2985 | |
66e67e41 | 2986 | if (!ifmgd->associated || |
b203ca39 | 2987 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2988 | return; |
66e67e41 | 2989 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2990 | |
17e4ec14 JM |
2991 | /* Track average RSSI from the Beacon frames of the current AP */ |
2992 | ifmgd->last_beacon_signal = rx_status->signal; | |
2993 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2994 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2995 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2996 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 2997 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 2998 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
2999 | } else { |
3000 | ifmgd->ave_beacon_signal = | |
3001 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
3002 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
3003 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 3004 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3005 | } |
615f7b9b MV |
3006 | |
3007 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
3008 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
3009 | int sig = ifmgd->ave_beacon_signal; | |
3010 | int last_sig = ifmgd->last_ave_beacon_signal; | |
3011 | ||
3012 | /* | |
3013 | * if signal crosses either of the boundaries, invoke callback | |
3014 | * with appropriate parameters | |
3015 | */ | |
3016 | if (sig > ifmgd->rssi_max_thold && | |
3017 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3018 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 3019 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
3020 | } else if (sig < ifmgd->rssi_min_thold && |
3021 | (last_sig >= ifmgd->rssi_max_thold || | |
3022 | last_sig == 0)) { | |
3023 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 3024 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
3025 | } |
3026 | } | |
3027 | ||
17e4ec14 | 3028 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3029 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3030 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
3031 | int sig = ifmgd->ave_beacon_signal / 16; |
3032 | int last_event = ifmgd->last_cqm_event_signal; | |
3033 | int thold = bss_conf->cqm_rssi_thold; | |
3034 | int hyst = bss_conf->cqm_rssi_hyst; | |
3035 | if (sig < thold && | |
3036 | (last_event == 0 || sig < last_event - hyst)) { | |
3037 | ifmgd->last_cqm_event_signal = sig; | |
3038 | ieee80211_cqm_rssi_notify( | |
3039 | &sdata->vif, | |
3040 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3041 | GFP_KERNEL); | |
3042 | } else if (sig > thold && | |
3043 | (last_event == 0 || sig > last_event + hyst)) { | |
3044 | ifmgd->last_cqm_event_signal = sig; | |
3045 | ieee80211_cqm_rssi_notify( | |
3046 | &sdata->vif, | |
3047 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3048 | GFP_KERNEL); | |
3049 | } | |
3050 | } | |
3051 | ||
b291ba11 | 3052 | if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) { |
bdcbd8e0 | 3053 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3054 | "cancelling AP probe due to a received beacon\n"); |
925e64c3 | 3055 | mutex_lock(&local->mtx); |
b291ba11 | 3056 | ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL; |
925e64c3 SG |
3057 | ieee80211_run_deferred_scan(local); |
3058 | mutex_unlock(&local->mtx); | |
3059 | ||
4e751843 JB |
3060 | mutex_lock(&local->iflist_mtx); |
3061 | ieee80211_recalc_ps(local, -1); | |
3062 | mutex_unlock(&local->iflist_mtx); | |
92778180 JM |
3063 | } |
3064 | ||
b291ba11 JB |
3065 | /* |
3066 | * Push the beacon loss detection into the future since | |
3067 | * we are processing a beacon from the AP just now. | |
3068 | */ | |
d3a910a8 | 3069 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3070 | |
d91f36db JB |
3071 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3072 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3073 | len - baselen, false, &elems, |
d91f36db JB |
3074 | care_about_ies, ncrc); |
3075 | ||
25c9c875 | 3076 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
3077 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3078 | elems.tim_len, | |
3079 | ifmgd->aid); | |
1fb3606b | 3080 | if (directed_tim) { |
572e0012 | 3081 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3082 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3083 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3084 | ieee80211_hw_config(local, | |
3085 | IEEE80211_CONF_CHANGE_PS); | |
3086 | } | |
572e0012 | 3087 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3088 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3089 | local->pspolling = true; |
3090 | ||
3091 | /* | |
3092 | * Here is assumed that the driver will be | |
3093 | * able to send ps-poll frame and receive a | |
3094 | * response even though power save mode is | |
3095 | * enabled, but some drivers might require | |
3096 | * to disable power save here. This needs | |
3097 | * to be investigated. | |
3098 | */ | |
3099 | ieee80211_send_pspoll(local, sdata); | |
3100 | } | |
a97b77b9 VN |
3101 | } |
3102 | } | |
7a5158ef | 3103 | |
488dd7b5 | 3104 | if (sdata->vif.p2p) { |
67baf663 | 3105 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3106 | int ret; |
3107 | ||
3108 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3109 | len - baselen, | |
3110 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3111 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3112 | if (ret >= 2) { |
3113 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3114 | /* valid noa_attr and index changed */ | |
3115 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3116 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3117 | changed |= BSS_CHANGED_P2P_PS; | |
3118 | /* | |
3119 | * make sure we update all information, the CRC | |
3120 | * mechanism doesn't look at P2P attributes. | |
3121 | */ | |
3122 | ifmgd->beacon_crc_valid = false; | |
3123 | } | |
3124 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3125 | /* noa_attr not found and we had valid noa_attr before */ | |
3126 | sdata->u.mgd.p2p_noa_index = -1; | |
3127 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3128 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3129 | ifmgd->beacon_crc_valid = false; |
3130 | } | |
3131 | } | |
3132 | ||
d8ec4433 | 3133 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3134 | return; |
30196673 | 3135 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3136 | ifmgd->beacon_crc_valid = true; |
30196673 | 3137 | |
d45c4172 | 3138 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d JB |
3139 | |
3140 | if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
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 | ||
30eb1dc2 JB |
3190 | if (ieee80211_config_bw(sdata, sta, elems.ht_operation, |
3191 | elems.vht_operation, bssid, &changed)) { | |
3192 | mutex_unlock(&local->sta_mtx); | |
3193 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3194 | WLAN_REASON_DEAUTH_LEAVING, | |
3195 | true, deauth_buf); | |
6ff57cf8 JB |
3196 | cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, |
3197 | sizeof(deauth_buf)); | |
8d61ffa5 | 3198 | return; |
30eb1dc2 | 3199 | } |
bee7f586 JB |
3200 | |
3201 | if (sta && elems.opmode_notif) | |
3202 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3203 | rx_status->band, true); | |
1128958d | 3204 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3205 | |
04b7b2ff JB |
3206 | if (elems.country_elem && elems.pwr_constr_elem && |
3207 | mgmt->u.probe_resp.capab_info & | |
3208 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
3209 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
3210 | elems.country_elem, | |
3211 | elems.country_elem_len, | |
3212 | elems.pwr_constr_elem); | |
3f2355cb | 3213 | |
471b3efd | 3214 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3215 | } |
3216 | ||
1fa57d01 JB |
3217 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3218 | struct sk_buff *skb) | |
f0706e82 JB |
3219 | { |
3220 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3221 | struct ieee80211_mgmt *mgmt; |
3222 | u16 fc; | |
1b3a2e49 JB |
3223 | struct ieee802_11_elems elems; |
3224 | int ies_len; | |
f0706e82 | 3225 | |
f0706e82 JB |
3226 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3227 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3228 | fc = le16_to_cpu(mgmt->frame_control); | |
3229 | ||
8d61ffa5 | 3230 | sdata_lock(sdata); |
77fdaa12 | 3231 | |
66e67e41 JB |
3232 | switch (fc & IEEE80211_FCTL_STYPE) { |
3233 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3234 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3235 | break; |
3236 | case IEEE80211_STYPE_PROBE_RESP: | |
3237 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3238 | break; | |
3239 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3240 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3241 | break; |
3242 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3243 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3244 | break; |
3245 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3246 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3247 | break; |
3248 | case IEEE80211_STYPE_ASSOC_RESP: | |
3249 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3250 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3251 | break; |
3252 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3253 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3254 | ies_len = skb->len - |
3255 | offsetof(struct ieee80211_mgmt, | |
3256 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3257 | |
3258 | if (ies_len < 0) | |
3259 | break; | |
3260 | ||
3261 | ieee802_11_parse_elems( | |
3262 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3263 | ies_len, true, &elems); |
37799e52 JB |
3264 | |
3265 | if (elems.parse_error) | |
3266 | break; | |
3267 | ||
1b3a2e49 JB |
3268 | ieee80211_sta_process_chanswitch(sdata, |
3269 | rx_status->mactime, | |
04a161f4 | 3270 | &elems, false); |
1b3a2e49 JB |
3271 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3272 | ies_len = skb->len - | |
3273 | offsetof(struct ieee80211_mgmt, | |
3274 | u.action.u.ext_chan_switch.variable); | |
3275 | ||
3276 | if (ies_len < 0) | |
3277 | break; | |
3278 | ||
3279 | ieee802_11_parse_elems( | |
3280 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3281 | ies_len, true, &elems); |
1b3a2e49 JB |
3282 | |
3283 | if (elems.parse_error) | |
3284 | break; | |
3285 | ||
3286 | /* for the handling code pretend this was also an IE */ | |
3287 | elems.ext_chansw_ie = | |
3288 | &mgmt->u.action.u.ext_chan_switch.data; | |
3289 | ||
66e67e41 | 3290 | ieee80211_sta_process_chanswitch(sdata, |
37799e52 | 3291 | rx_status->mactime, |
04a161f4 | 3292 | &elems, false); |
77fdaa12 | 3293 | } |
37799e52 | 3294 | break; |
77fdaa12 | 3295 | } |
8d61ffa5 | 3296 | sdata_unlock(sdata); |
f0706e82 JB |
3297 | } |
3298 | ||
9c6bd790 | 3299 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3300 | { |
60f8b39c JB |
3301 | struct ieee80211_sub_if_data *sdata = |
3302 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3303 | |
9b7d72c1 | 3304 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3305 | } |
3306 | ||
04ac3c0e | 3307 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3308 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3309 | { |
6ae16775 | 3310 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3311 | |
37ad3888 | 3312 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3313 | tx, frame_buf); |
37ad3888 | 3314 | |
6ff57cf8 JB |
3315 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3316 | IEEE80211_DEAUTH_FRAME_LEN); | |
04ac3c0e FF |
3317 | } |
3318 | ||
66e67e41 JB |
3319 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3320 | { | |
3321 | struct ieee80211_local *local = sdata->local; | |
3322 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3323 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3324 | u32 tx_flags = 0; |
66e67e41 | 3325 | |
8d61ffa5 | 3326 | sdata_assert_lock(sdata); |
66e67e41 JB |
3327 | |
3328 | if (WARN_ON_ONCE(!auth_data)) | |
3329 | return -EINVAL; | |
3330 | ||
66e67e41 JB |
3331 | auth_data->tries++; |
3332 | ||
3333 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3334 | sdata_info(sdata, "authentication with %pM timed out\n", |
3335 | auth_data->bss->bssid); | |
66e67e41 JB |
3336 | |
3337 | /* | |
3338 | * Most likely AP is not in the range so remove the | |
3339 | * bss struct for that AP. | |
3340 | */ | |
3341 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3342 | ||
3343 | return -ETIMEDOUT; | |
3344 | } | |
3345 | ||
a1845fc7 JB |
3346 | drv_mgd_prepare_tx(local, sdata); |
3347 | ||
66e67e41 | 3348 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3349 | u16 trans = 1; |
3350 | u16 status = 0; | |
3351 | ||
bdcbd8e0 JB |
3352 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3353 | auth_data->bss->bssid, auth_data->tries, | |
3354 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3355 | |
3356 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3357 | |
3358 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3359 | trans = auth_data->sae_trans; | |
3360 | status = auth_data->sae_status; | |
3361 | auth_data->expected_transaction = trans; | |
3362 | } | |
3363 | ||
6211dd12 SG |
3364 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3365 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3366 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3367 | ||
6b8ece3a JM |
3368 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3369 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3370 | auth_data->bss->bssid, |
1672c0e3 JB |
3371 | auth_data->bss->bssid, NULL, 0, 0, |
3372 | tx_flags); | |
66e67e41 JB |
3373 | } else { |
3374 | const u8 *ssidie; | |
3375 | ||
bdcbd8e0 JB |
3376 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3377 | auth_data->bss->bssid, auth_data->tries, | |
3378 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3379 | |
9caf0364 | 3380 | rcu_read_lock(); |
66e67e41 | 3381 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3382 | if (!ssidie) { |
3383 | rcu_read_unlock(); | |
66e67e41 | 3384 | return -EINVAL; |
9caf0364 | 3385 | } |
66e67e41 JB |
3386 | /* |
3387 | * Direct probe is sent to broadcast address as some APs | |
3388 | * will not answer to direct packet in unassociated state. | |
3389 | */ | |
3390 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
6211dd12 | 3391 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3392 | auth_data->bss->channel, false); |
9caf0364 | 3393 | rcu_read_unlock(); |
66e67e41 JB |
3394 | } |
3395 | ||
6211dd12 | 3396 | if (tx_flags == 0) { |
1672c0e3 | 3397 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
89afe614 | 3398 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 3399 | run_again(sdata, auth_data->timeout); |
89afe614 JB |
3400 | } else { |
3401 | auth_data->timeout_started = false; | |
1672c0e3 | 3402 | } |
66e67e41 JB |
3403 | |
3404 | return 0; | |
3405 | } | |
3406 | ||
3407 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3408 | { | |
3409 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3410 | struct ieee80211_local *local = sdata->local; | |
3411 | ||
8d61ffa5 | 3412 | sdata_assert_lock(sdata); |
66e67e41 | 3413 | |
66e67e41 JB |
3414 | assoc_data->tries++; |
3415 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3416 | sdata_info(sdata, "association with %pM timed out\n", |
3417 | assoc_data->bss->bssid); | |
66e67e41 JB |
3418 | |
3419 | /* | |
3420 | * Most likely AP is not in the range so remove the | |
3421 | * bss struct for that AP. | |
3422 | */ | |
3423 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3424 | ||
3425 | return -ETIMEDOUT; | |
3426 | } | |
3427 | ||
bdcbd8e0 JB |
3428 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3429 | assoc_data->bss->bssid, assoc_data->tries, | |
3430 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3431 | ieee80211_send_assoc(sdata); |
3432 | ||
1672c0e3 JB |
3433 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3434 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3435 | assoc_data->timeout_started = true; |
8d61ffa5 | 3436 | run_again(sdata, assoc_data->timeout); |
89afe614 JB |
3437 | } else { |
3438 | assoc_data->timeout_started = false; | |
1672c0e3 | 3439 | } |
66e67e41 JB |
3440 | |
3441 | return 0; | |
3442 | } | |
3443 | ||
1672c0e3 JB |
3444 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3445 | __le16 fc, bool acked) | |
3446 | { | |
3447 | struct ieee80211_local *local = sdata->local; | |
3448 | ||
3449 | sdata->u.mgd.status_fc = fc; | |
3450 | sdata->u.mgd.status_acked = acked; | |
3451 | sdata->u.mgd.status_received = true; | |
3452 | ||
3453 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3454 | } | |
3455 | ||
1fa57d01 | 3456 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3457 | { |
9c6bd790 | 3458 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3459 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3460 | |
8d61ffa5 | 3461 | sdata_lock(sdata); |
77fdaa12 | 3462 | |
1672c0e3 JB |
3463 | if (ifmgd->status_received) { |
3464 | __le16 fc = ifmgd->status_fc; | |
3465 | bool status_acked = ifmgd->status_acked; | |
3466 | ||
3467 | ifmgd->status_received = false; | |
3468 | if (ifmgd->auth_data && | |
3469 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3470 | if (status_acked) { | |
3471 | ifmgd->auth_data->timeout = | |
3472 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3473 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3474 | } else { |
3475 | ifmgd->auth_data->timeout = jiffies - 1; | |
3476 | } | |
89afe614 | 3477 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3478 | } else if (ifmgd->assoc_data && |
3479 | (ieee80211_is_assoc_req(fc) || | |
3480 | ieee80211_is_reassoc_req(fc))) { | |
3481 | if (status_acked) { | |
3482 | ifmgd->assoc_data->timeout = | |
3483 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3484 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3485 | } else { |
3486 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3487 | } | |
89afe614 | 3488 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3489 | } |
3490 | } | |
3491 | ||
89afe614 | 3492 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3493 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3494 | if (ifmgd->auth_data->done) { | |
3495 | /* | |
3496 | * ok ... we waited for assoc but userspace didn't, | |
3497 | * so let's just kill the auth data | |
3498 | */ | |
3499 | ieee80211_destroy_auth_data(sdata, false); | |
3500 | } else if (ieee80211_probe_auth(sdata)) { | |
3501 | u8 bssid[ETH_ALEN]; | |
3502 | ||
3503 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3504 | ||
3505 | ieee80211_destroy_auth_data(sdata, false); | |
3506 | ||
6ff57cf8 | 3507 | cfg80211_auth_timeout(sdata->dev, bssid); |
66e67e41 | 3508 | } |
89afe614 | 3509 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3510 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3511 | |
89afe614 | 3512 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3513 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3514 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 JB |
3515 | ieee80211_do_assoc(sdata)) { |
3516 | u8 bssid[ETH_ALEN]; | |
3517 | ||
3518 | memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN); | |
3519 | ||
3520 | ieee80211_destroy_assoc_data(sdata, false); | |
3521 | ||
6ff57cf8 | 3522 | cfg80211_assoc_timeout(sdata->dev, bssid); |
66e67e41 | 3523 | } |
89afe614 | 3524 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3525 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3526 | |
b291ba11 JB |
3527 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
3528 | IEEE80211_STA_CONNECTION_POLL) && | |
3529 | ifmgd->associated) { | |
a43abf29 | 3530 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3531 | int max_tries; |
a43abf29 | 3532 | |
0c1ad2ca | 3533 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3534 | |
72a8a3ed | 3535 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3536 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3537 | else |
180205bd | 3538 | max_tries = max_probe_tries; |
72a8a3ed | 3539 | |
4e5ff376 FF |
3540 | /* ACK received for nullfunc probing frame */ |
3541 | if (!ifmgd->probe_send_count) | |
3542 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3543 | else if (ifmgd->nullfunc_failed) { |
3544 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3545 | mlme_dbg(sdata, |
3546 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3547 | bssid, ifmgd->probe_send_count, | |
3548 | max_tries); | |
04ac3c0e FF |
3549 | ieee80211_mgd_probe_ap_send(sdata); |
3550 | } else { | |
bdcbd8e0 JB |
3551 | mlme_dbg(sdata, |
3552 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3553 | bssid); | |
95acac61 | 3554 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3555 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3556 | false); | |
04ac3c0e FF |
3557 | } |
3558 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3559 | run_again(sdata, ifmgd->probe_timeout); |
04ac3c0e | 3560 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3561 | mlme_dbg(sdata, |
3562 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3563 | bssid, probe_wait_ms); | |
95acac61 | 3564 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3565 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3566 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3567 | mlme_dbg(sdata, |
3568 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3569 | bssid, probe_wait_ms, | |
3570 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3571 | ieee80211_mgd_probe_ap_send(sdata); |
3572 | } else { | |
b291ba11 JB |
3573 | /* |
3574 | * We actually lost the connection ... or did we? | |
3575 | * Let's make sure! | |
3576 | */ | |
b38afa87 BG |
3577 | wiphy_debug(local->hw.wiphy, |
3578 | "%s: No probe response from AP %pM" | |
3579 | " after %dms, disconnecting.\n", | |
3580 | sdata->name, | |
180205bd | 3581 | bssid, probe_wait_ms); |
04ac3c0e | 3582 | |
95acac61 | 3583 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3584 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3585 | } |
3586 | } | |
3587 | ||
8d61ffa5 | 3588 | sdata_unlock(sdata); |
f0706e82 JB |
3589 | } |
3590 | ||
b291ba11 JB |
3591 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3592 | { | |
3593 | struct ieee80211_sub_if_data *sdata = | |
3594 | (struct ieee80211_sub_if_data *) data; | |
3595 | struct ieee80211_local *local = sdata->local; | |
3596 | ||
3597 | if (local->quiescing) | |
3598 | return; | |
3599 | ||
682bd38b | 3600 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3601 | ieee80211_queue_work(&sdata->local->hw, |
3602 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3603 | } |
3604 | ||
3605 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3606 | { | |
3607 | struct ieee80211_sub_if_data *sdata = | |
3608 | (struct ieee80211_sub_if_data *) data; | |
3609 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3610 | struct ieee80211_local *local = sdata->local; | |
3611 | ||
3612 | if (local->quiescing) | |
3613 | return; | |
3614 | ||
42935eca | 3615 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3616 | } |
3617 | ||
3618 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3619 | { | |
3620 | struct ieee80211_sub_if_data *sdata = | |
3621 | container_of(work, struct ieee80211_sub_if_data, | |
3622 | u.mgd.monitor_work); | |
3623 | ||
3624 | ieee80211_mgd_probe_ap(sdata, false); | |
3625 | } | |
3626 | ||
9c6bd790 JB |
3627 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3628 | { | |
494f1fe5 EP |
3629 | u32 flags; |
3630 | ||
ad935687 | 3631 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3632 | __ieee80211_stop_poll(sdata); |
ad935687 | 3633 | |
b291ba11 | 3634 | /* let's probe the connection once */ |
494f1fe5 EP |
3635 | flags = sdata->local->hw.flags; |
3636 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3637 | ieee80211_queue_work(&sdata->local->hw, | |
3638 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3639 | /* and do all the other regular work too */ |
64592c8f | 3640 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3641 | } |
9c6bd790 | 3642 | } |
f0706e82 | 3643 | |
b8360ab8 JB |
3644 | #ifdef CONFIG_PM |
3645 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
3646 | { | |
3647 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3648 | ||
8d61ffa5 | 3649 | sdata_lock(sdata); |
b8360ab8 | 3650 | if (!ifmgd->associated) { |
8d61ffa5 | 3651 | sdata_unlock(sdata); |
b8360ab8 JB |
3652 | return; |
3653 | } | |
3654 | ||
3655 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
3656 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
3657 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
3658 | ieee80211_sta_connection_lost(sdata, | |
3659 | ifmgd->associated->bssid, | |
3660 | WLAN_REASON_UNSPECIFIED, | |
3661 | true); | |
8d61ffa5 | 3662 | sdata_unlock(sdata); |
b8360ab8 JB |
3663 | return; |
3664 | } | |
8d61ffa5 | 3665 | sdata_unlock(sdata); |
b8360ab8 JB |
3666 | } |
3667 | #endif | |
3668 | ||
9c6bd790 JB |
3669 | /* interface setup */ |
3670 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3671 | { |
46900298 | 3672 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3673 | |
46900298 | 3674 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3675 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3676 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3677 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3678 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3679 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3680 | ieee80211_csa_connection_drop_work); | |
d1f5b7a3 | 3681 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work); |
46900298 | 3682 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3683 | (unsigned long) sdata); |
b291ba11 JB |
3684 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3685 | (unsigned long) sdata); | |
3686 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3687 | (unsigned long) sdata); | |
46900298 | 3688 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3689 | (unsigned long) sdata); |
9c6bd790 | 3690 | |
ab1faead | 3691 | ifmgd->flags = 0; |
1478acb3 | 3692 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
3693 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
3694 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 3695 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 3696 | |
0f78231b JB |
3697 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) |
3698 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3699 | else | |
3700 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3701 | } |
3702 | ||
77fdaa12 JB |
3703 | /* scan finished notification */ |
3704 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3705 | { |
31ee67a1 | 3706 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3707 | |
77fdaa12 JB |
3708 | /* Restart STA timers */ |
3709 | rcu_read_lock(); | |
370bd005 BG |
3710 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
3711 | if (ieee80211_sdata_running(sdata)) | |
3712 | ieee80211_restart_sta_timer(sdata); | |
3713 | } | |
77fdaa12 JB |
3714 | rcu_read_unlock(); |
3715 | } | |
60f8b39c | 3716 | |
77fdaa12 JB |
3717 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3718 | unsigned long data, void *dummy) | |
3719 | { | |
3720 | s32 latency_usec = (s32) data; | |
3721 | struct ieee80211_local *local = | |
3722 | container_of(nb, struct ieee80211_local, | |
3723 | network_latency_notifier); | |
1fa6f4af | 3724 | |
77fdaa12 JB |
3725 | mutex_lock(&local->iflist_mtx); |
3726 | ieee80211_recalc_ps(local, latency_usec); | |
3727 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3728 | |
77fdaa12 | 3729 | return 0; |
9c6bd790 JB |
3730 | } |
3731 | ||
f2d9d270 JB |
3732 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
3733 | struct cfg80211_bss *cbss) | |
3734 | { | |
3735 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3736 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3737 | const struct ieee80211_ht_cap *ht_cap; | |
3738 | const struct ieee80211_vht_cap *vht_cap; | |
3739 | u8 chains = 1; | |
3740 | ||
3741 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3742 | return chains; | |
3743 | ||
9caf0364 | 3744 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3745 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3746 | ht_cap = (void *)(ht_cap_ie + 2); | |
3747 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3748 | /* | |
3749 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3750 | * "Tx Unequal Modulation Supported" fields. | |
3751 | */ | |
3752 | } | |
3753 | ||
3754 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3755 | return chains; | |
3756 | ||
9caf0364 | 3757 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3758 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3759 | u8 nss; | |
3760 | u16 tx_mcs_map; | |
3761 | ||
3762 | vht_cap = (void *)(vht_cap_ie + 2); | |
3763 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3764 | for (nss = 8; nss > 0; nss--) { | |
3765 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3766 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3767 | break; | |
3768 | } | |
3769 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3770 | chains = max(chains, nss); | |
3771 | } | |
3772 | ||
3773 | return chains; | |
3774 | } | |
3775 | ||
b17166a7 JB |
3776 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3777 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3778 | { |
3779 | struct ieee80211_local *local = sdata->local; | |
3780 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
24398e39 | 3781 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3782 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3783 | struct ieee80211_supported_band *sband; |
4bf88530 | 3784 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3785 | int ret; |
a1cf775d | 3786 | |
24398e39 JB |
3787 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3788 | ||
f2d9d270 JB |
3789 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3790 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3791 | IEEE80211_STA_DISABLE_160MHZ); | |
3792 | ||
9caf0364 JB |
3793 | rcu_read_lock(); |
3794 | ||
f2d9d270 JB |
3795 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3796 | sband->ht_cap.ht_supported) { | |
08e6effa | 3797 | const u8 *ht_oper_ie, *ht_cap; |
24398e39 | 3798 | |
9caf0364 | 3799 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3800 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3801 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa JB |
3802 | |
3803 | ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); | |
3804 | if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) { | |
3805 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
3806 | ht_oper = NULL; | |
3807 | } | |
24398e39 JB |
3808 | } |
3809 | ||
f2d9d270 JB |
3810 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3811 | sband->vht_cap.vht_supported) { | |
08e6effa | 3812 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 3813 | |
9caf0364 JB |
3814 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3815 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3816 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3817 | vht_oper = (void *)(vht_oper_ie + 2); | |
3818 | if (vht_oper && !ht_oper) { | |
3819 | vht_oper = NULL; | |
bdcbd8e0 | 3820 | sdata_info(sdata, |
f2d9d270 | 3821 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
3822 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3823 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 3824 | } |
08e6effa JB |
3825 | |
3826 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
3827 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
3828 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
3829 | vht_oper = NULL; | |
3830 | } | |
24398e39 JB |
3831 | } |
3832 | ||
f2d9d270 JB |
3833 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3834 | cbss->channel, | |
3835 | ht_oper, vht_oper, | |
30eb1dc2 | 3836 | &chandef, true); |
04ecd257 | 3837 | |
f2d9d270 JB |
3838 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3839 | local->rx_chains); | |
24398e39 | 3840 | |
9caf0364 JB |
3841 | rcu_read_unlock(); |
3842 | ||
04ecd257 JB |
3843 | /* will change later if needed */ |
3844 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3845 | ||
f2d9d270 JB |
3846 | /* |
3847 | * If this fails (possibly due to channel context sharing | |
3848 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3849 | * same control channel) try to use a smaller bandwidth. | |
3850 | */ | |
3851 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3852 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
3853 | |
3854 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
3855 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
3856 | chandef.width == NL80211_CHAN_WIDTH_10) | |
3857 | return ret; | |
3858 | ||
d601cd8d | 3859 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
f2d9d270 | 3860 | ifmgd->flags |= chandef_downgrade(&chandef); |
d601cd8d JB |
3861 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
3862 | IEEE80211_CHANCTX_SHARED); | |
3863 | } | |
f2d9d270 | 3864 | return ret; |
b17166a7 JB |
3865 | } |
3866 | ||
3867 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3868 | struct cfg80211_bss *cbss, bool assoc) | |
3869 | { | |
3870 | struct ieee80211_local *local = sdata->local; | |
3871 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3872 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3873 | struct sta_info *new_sta = NULL; | |
3874 | bool have_sta = false; | |
3875 | int err; | |
3876 | ||
3877 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3878 | return -EINVAL; | |
3879 | ||
3880 | if (assoc) { | |
3881 | rcu_read_lock(); | |
3882 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3883 | rcu_read_unlock(); | |
3884 | } | |
3885 | ||
3886 | if (!have_sta) { | |
3887 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3888 | if (!new_sta) | |
3889 | return -ENOMEM; | |
3890 | } | |
3891 | ||
13e0c8e3 | 3892 | if (new_sta) { |
5d6a1b06 JB |
3893 | u32 rates = 0, basic_rates = 0; |
3894 | bool have_higher_than_11mbit; | |
3895 | int min_rate = INT_MAX, min_rate_index = -1; | |
b17166a7 | 3896 | struct ieee80211_supported_band *sband; |
8cef2c9d | 3897 | const struct cfg80211_bss_ies *ies; |
b17166a7 JB |
3898 | |
3899 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3900 | ||
3901 | err = ieee80211_prep_channel(sdata, cbss); | |
3902 | if (err) { | |
3903 | sta_info_free(local, new_sta); | |
3904 | return err; | |
3905 | } | |
5d6a1b06 | 3906 | |
5d6a1b06 JB |
3907 | ieee80211_get_rates(sband, bss->supp_rates, |
3908 | bss->supp_rates_len, | |
3909 | &rates, &basic_rates, | |
3910 | &have_higher_than_11mbit, | |
3911 | &min_rate, &min_rate_index); | |
3912 | ||
3913 | /* | |
3914 | * This used to be a workaround for basic rates missing | |
3915 | * in the association response frame. Now that we no | |
3916 | * longer use the basic rates from there, it probably | |
3917 | * doesn't happen any more, but keep the workaround so | |
3918 | * in case some *other* APs are buggy in different ways | |
3919 | * we can connect -- with a warning. | |
3920 | */ | |
3921 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3922 | sdata_info(sdata, |
3923 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3924 | basic_rates = BIT(min_rate_index); |
3925 | } | |
3926 | ||
13e0c8e3 | 3927 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3928 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3929 | ||
3930 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3931 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3932 | have_higher_than_11mbit) |
3933 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3934 | else | |
3935 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
3936 | ||
3937 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
3938 | ||
8c358bcd JB |
3939 | /* set timing information */ |
3940 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 3941 | rcu_read_lock(); |
ef429dad JB |
3942 | ies = rcu_dereference(cbss->beacon_ies); |
3943 | if (ies) { | |
3944 | const u8 *tim_ie; | |
3945 | ||
3946 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3947 | sdata->vif.bss_conf.sync_device_ts = | |
3948 | bss->device_ts_beacon; | |
3949 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
3950 | ies->data, ies->len); | |
3951 | if (tim_ie && tim_ie[1] >= 2) | |
3952 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
3953 | else | |
3954 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3955 | } else if (!(local->hw.flags & | |
3956 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
3957 | ies = rcu_dereference(cbss->proberesp_ies); | |
3958 | /* must be non-NULL since beacon IEs were NULL */ | |
3959 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3960 | sdata->vif.bss_conf.sync_device_ts = | |
3961 | bss->device_ts_presp; | |
3962 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3963 | } else { | |
3964 | sdata->vif.bss_conf.sync_tsf = 0; | |
3965 | sdata->vif.bss_conf.sync_device_ts = 0; | |
3966 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3967 | } | |
8cef2c9d | 3968 | rcu_read_unlock(); |
8c358bcd JB |
3969 | |
3970 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 3971 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
3972 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
3973 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
3974 | |
3975 | if (assoc) | |
13e0c8e3 | 3976 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 3977 | |
13e0c8e3 JB |
3978 | err = sta_info_insert(new_sta); |
3979 | new_sta = NULL; | |
a1cf775d | 3980 | if (err) { |
bdcbd8e0 JB |
3981 | sdata_info(sdata, |
3982 | "failed to insert STA entry for the AP (error %d)\n", | |
3983 | err); | |
a1cf775d JB |
3984 | return err; |
3985 | } | |
3986 | } else | |
b203ca39 | 3987 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
3988 | |
3989 | return 0; | |
3990 | } | |
3991 | ||
77fdaa12 JB |
3992 | /* config hooks */ |
3993 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
3994 | struct cfg80211_auth_request *req) | |
9c6bd790 | 3995 | { |
66e67e41 JB |
3996 | struct ieee80211_local *local = sdata->local; |
3997 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3998 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 3999 | u16 auth_alg; |
66e67e41 JB |
4000 | int err; |
4001 | ||
4002 | /* prepare auth data structure */ | |
9c6bd790 | 4003 | |
77fdaa12 JB |
4004 | switch (req->auth_type) { |
4005 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4006 | auth_alg = WLAN_AUTH_OPEN; | |
4007 | break; | |
4008 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4009 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4010 | return -EOPNOTSUPP; |
77fdaa12 JB |
4011 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4012 | break; | |
4013 | case NL80211_AUTHTYPE_FT: | |
4014 | auth_alg = WLAN_AUTH_FT; | |
4015 | break; | |
4016 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4017 | auth_alg = WLAN_AUTH_LEAP; | |
4018 | break; | |
6b8ece3a JM |
4019 | case NL80211_AUTHTYPE_SAE: |
4020 | auth_alg = WLAN_AUTH_SAE; | |
4021 | break; | |
77fdaa12 JB |
4022 | default: |
4023 | return -EOPNOTSUPP; | |
60f8b39c | 4024 | } |
77fdaa12 | 4025 | |
6b8ece3a JM |
4026 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4027 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4028 | if (!auth_data) |
9c6bd790 | 4029 | return -ENOMEM; |
77fdaa12 | 4030 | |
66e67e41 | 4031 | auth_data->bss = req->bss; |
77fdaa12 | 4032 | |
6b8ece3a JM |
4033 | if (req->sae_data_len >= 4) { |
4034 | __le16 *pos = (__le16 *) req->sae_data; | |
4035 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4036 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4037 | memcpy(auth_data->data, req->sae_data + 4, | |
4038 | req->sae_data_len - 4); | |
4039 | auth_data->data_len += req->sae_data_len - 4; | |
4040 | } | |
4041 | ||
77fdaa12 | 4042 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4043 | memcpy(&auth_data->data[auth_data->data_len], |
4044 | req->ie, req->ie_len); | |
4045 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4046 | } |
77fdaa12 | 4047 | |
fffd0934 | 4048 | if (req->key && req->key_len) { |
66e67e41 JB |
4049 | auth_data->key_len = req->key_len; |
4050 | auth_data->key_idx = req->key_idx; | |
4051 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4052 | } |
4053 | ||
66e67e41 | 4054 | auth_data->algorithm = auth_alg; |
60f8b39c | 4055 | |
66e67e41 | 4056 | /* try to authenticate/probe */ |
2a33bee2 | 4057 | |
66e67e41 JB |
4058 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4059 | ifmgd->assoc_data) { | |
4060 | err = -EBUSY; | |
4061 | goto err_free; | |
2a33bee2 GE |
4062 | } |
4063 | ||
66e67e41 JB |
4064 | if (ifmgd->auth_data) |
4065 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4066 | |
66e67e41 JB |
4067 | /* prep auth_data so we don't go into idle on disassoc */ |
4068 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4069 | |
7b119dc0 JB |
4070 | if (ifmgd->associated) { |
4071 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4072 | ||
4073 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4074 | WLAN_REASON_UNSPECIFIED, | |
4075 | false, frame_buf); | |
4076 | ||
6ff57cf8 JB |
4077 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4078 | sizeof(frame_buf)); | |
7b119dc0 | 4079 | } |
af6b6374 | 4080 | |
bdcbd8e0 | 4081 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4082 | |
a1cf775d JB |
4083 | err = ieee80211_prep_connection(sdata, req->bss, false); |
4084 | if (err) | |
66e67e41 | 4085 | goto err_clear; |
af6b6374 | 4086 | |
66e67e41 JB |
4087 | err = ieee80211_probe_auth(sdata); |
4088 | if (err) { | |
66e67e41 JB |
4089 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4090 | goto err_clear; | |
4091 | } | |
4092 | ||
4093 | /* hold our own reference */ | |
5b112d3d | 4094 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4095 | return 0; |
66e67e41 JB |
4096 | |
4097 | err_clear: | |
3d2abdfd EP |
4098 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4099 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4100 | ifmgd->auth_data = NULL; |
4101 | err_free: | |
4102 | kfree(auth_data); | |
66e67e41 | 4103 | return err; |
af6b6374 JB |
4104 | } |
4105 | ||
77fdaa12 JB |
4106 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4107 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4108 | { |
66e67e41 | 4109 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4110 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4111 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4112 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4113 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4114 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4115 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4116 | int i, err; |
f0706e82 | 4117 | |
66e67e41 JB |
4118 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4119 | if (!assoc_data) | |
4120 | return -ENOMEM; | |
4121 | ||
9caf0364 JB |
4122 | rcu_read_lock(); |
4123 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4124 | if (!ssidie) { | |
4125 | rcu_read_unlock(); | |
4126 | kfree(assoc_data); | |
4127 | return -EINVAL; | |
4128 | } | |
4129 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4130 | assoc_data->ssid_len = ssidie[1]; | |
4131 | rcu_read_unlock(); | |
4132 | ||
7b119dc0 JB |
4133 | if (ifmgd->associated) { |
4134 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4135 | ||
4136 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4137 | WLAN_REASON_UNSPECIFIED, | |
4138 | false, frame_buf); | |
4139 | ||
6ff57cf8 JB |
4140 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4141 | sizeof(frame_buf)); | |
7b119dc0 | 4142 | } |
66e67e41 JB |
4143 | |
4144 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4145 | err = -EBUSY; | |
4146 | goto err_free; | |
af6b6374 | 4147 | } |
77fdaa12 | 4148 | |
66e67e41 JB |
4149 | if (ifmgd->assoc_data) { |
4150 | err = -EBUSY; | |
4151 | goto err_free; | |
4152 | } | |
77fdaa12 | 4153 | |
66e67e41 JB |
4154 | if (ifmgd->auth_data) { |
4155 | bool match; | |
4156 | ||
4157 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4158 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4159 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4160 | } |
4161 | ||
66e67e41 | 4162 | /* prepare assoc data */ |
19c3b830 | 4163 | |
d8ec4433 JO |
4164 | ifmgd->beacon_crc_valid = false; |
4165 | ||
de5036aa JB |
4166 | /* |
4167 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4168 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4169 | * ciphers is configured as pairwise. | |
4170 | * We can set this to true for non-11n hardware, that'll be checked | |
4171 | * separately along with the peer capabilities. | |
4172 | */ | |
1c4cb928 | 4173 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4174 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4175 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4176 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4177 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4178 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4179 | netdev_info(sdata->dev, |
d545daba | 4180 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4181 | } |
4182 | } | |
77fdaa12 | 4183 | |
d545daba | 4184 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4185 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4186 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4187 | } | |
ef96a842 | 4188 | |
dd5ecfea JB |
4189 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4190 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4191 | ||
4e74bfdb JB |
4192 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4193 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4194 | if (!sband->ht_cap.ht_supported || | |
1c4cb928 | 4195 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { |
a8243b72 | 4196 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
1b49de26 JB |
4197 | if (!bss->wmm_used) |
4198 | netdev_info(sdata->dev, | |
4199 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4200 | } |
4e74bfdb | 4201 | |
d545daba MP |
4202 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4203 | if (!sband->vht_cap.vht_supported || | |
4204 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { | |
4205 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
1b49de26 JB |
4206 | if (!bss->wmm_used) |
4207 | netdev_info(sdata->dev, | |
4208 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4209 | } |
4210 | ||
ef96a842 BG |
4211 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4212 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4213 | sizeof(ifmgd->ht_capa_mask)); | |
4214 | ||
dd5ecfea JB |
4215 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4216 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4217 | sizeof(ifmgd->vht_capa_mask)); | |
4218 | ||
77fdaa12 | 4219 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4220 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4221 | assoc_data->ie_len = req->ie_len; | |
4222 | } | |
f679f65d | 4223 | |
66e67e41 | 4224 | assoc_data->bss = req->bss; |
f679f65d | 4225 | |
af6b6374 JB |
4226 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4227 | if (ifmgd->powersave) | |
04ecd257 | 4228 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4229 | else |
04ecd257 | 4230 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4231 | } else |
04ecd257 | 4232 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4233 | |
66e67e41 | 4234 | assoc_data->capability = req->bss->capability; |
32c5057b JB |
4235 | assoc_data->wmm = bss->wmm_used && |
4236 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
66e67e41 JB |
4237 | assoc_data->supp_rates = bss->supp_rates; |
4238 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4239 | |
9caf0364 | 4240 | rcu_read_lock(); |
9dde6423 JB |
4241 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4242 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4243 | assoc_data->ap_ht_param = | |
4244 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4245 | else | |
a8243b72 | 4246 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4247 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4248 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4249 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4250 | sizeof(struct ieee80211_vht_cap)); | |
4251 | else | |
4252 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4253 | rcu_read_unlock(); |
63f170e0 | 4254 | |
ab13315a | 4255 | if (bss->wmm_used && bss->uapsd_supported && |
24aa11ab AB |
4256 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) && |
4257 | sdata->wmm_acm != 0xff) { | |
76f0303d | 4258 | assoc_data->uapsd = true; |
ab13315a KV |
4259 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4260 | } else { | |
76f0303d | 4261 | assoc_data->uapsd = false; |
ab13315a KV |
4262 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4263 | } | |
4264 | ||
77fdaa12 | 4265 | if (req->prev_bssid) |
66e67e41 | 4266 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4267 | |
4268 | if (req->use_mfp) { | |
4269 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4270 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4271 | } else { | |
4272 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4273 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4274 | } | |
4275 | ||
4276 | if (req->crypto.control_port) | |
4277 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4278 | else | |
4279 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4280 | ||
a621fa4d JB |
4281 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4282 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
4283 | ||
66e67e41 JB |
4284 | /* kick off associate process */ |
4285 | ||
4286 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4287 | ifmgd->dtim_period = 0; |
989c6505 | 4288 | ifmgd->have_beacon = false; |
66e67e41 | 4289 | |
a1cf775d JB |
4290 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4291 | if (err) | |
4292 | goto err_clear; | |
66e67e41 | 4293 | |
c65dd147 EG |
4294 | rcu_read_lock(); |
4295 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4296 | |
c65dd147 EG |
4297 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4298 | !beacon_ies) { | |
4299 | /* | |
4300 | * Wait up to one beacon interval ... | |
4301 | * should this be more if we miss one? | |
4302 | */ | |
4303 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4304 | ifmgd->bssid); | |
4305 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4306 | assoc_data->timeout_started = true; |
c65dd147 EG |
4307 | assoc_data->need_beacon = true; |
4308 | } else if (beacon_ies) { | |
4309 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4310 | beacon_ies->data, | |
4311 | beacon_ies->len); | |
ef429dad JB |
4312 | u8 dtim_count = 0; |
4313 | ||
c65dd147 EG |
4314 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4315 | const struct ieee80211_tim_ie *tim; | |
4316 | tim = (void *)(tim_ie + 2); | |
4317 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4318 | dtim_count = tim->dtim_count; |
826262c3 | 4319 | } |
989c6505 | 4320 | ifmgd->have_beacon = true; |
66e67e41 | 4321 | assoc_data->timeout = jiffies; |
89afe614 | 4322 | assoc_data->timeout_started = true; |
ef429dad JB |
4323 | |
4324 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4325 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4326 | sdata->vif.bss_conf.sync_device_ts = | |
4327 | bss->device_ts_beacon; | |
4328 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4329 | } | |
c65dd147 EG |
4330 | } else { |
4331 | assoc_data->timeout = jiffies; | |
89afe614 | 4332 | assoc_data->timeout_started = true; |
66e67e41 | 4333 | } |
c65dd147 EG |
4334 | rcu_read_unlock(); |
4335 | ||
8d61ffa5 | 4336 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4337 | |
fcff4f10 PS |
4338 | if (bss->corrupt_data) { |
4339 | char *corrupt_type = "data"; | |
4340 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4341 | if (bss->corrupt_data & | |
4342 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4343 | corrupt_type = "beacon and probe response"; | |
4344 | else | |
4345 | corrupt_type = "beacon"; | |
4346 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4347 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4348 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4349 | corrupt_type); | |
fcff4f10 PS |
4350 | } |
4351 | ||
8d61ffa5 | 4352 | return 0; |
66e67e41 | 4353 | err_clear: |
3d2abdfd EP |
4354 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4355 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4356 | ifmgd->assoc_data = NULL; |
4357 | err_free: | |
4358 | kfree(assoc_data); | |
66e67e41 | 4359 | return err; |
f0706e82 JB |
4360 | } |
4361 | ||
77fdaa12 | 4362 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4363 | struct cfg80211_deauth_request *req) |
f0706e82 | 4364 | { |
46900298 | 4365 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4366 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4367 | bool tx = !req->local_state_change; |
de3d43a3 | 4368 | bool report_frame = false; |
f0706e82 | 4369 | |
bdcbd8e0 JB |
4370 | sdata_info(sdata, |
4371 | "deauthenticating from %pM by local choice (reason=%d)\n", | |
4372 | req->bssid, req->reason_code); | |
0ff71613 | 4373 | |
86552017 | 4374 | if (ifmgd->auth_data) { |
8c7d857c | 4375 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4376 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4377 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4378 | req->reason_code, tx, |
37ad3888 | 4379 | frame_buf); |
86552017 | 4380 | ieee80211_destroy_auth_data(sdata, false); |
86552017 | 4381 | |
de3d43a3 | 4382 | report_frame = true; |
86552017 | 4383 | goto out; |
8c7d857c EG |
4384 | } |
4385 | ||
86552017 JB |
4386 | if (ifmgd->associated && |
4387 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
4388 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4389 | req->reason_code, tx, frame_buf); | |
de3d43a3 | 4390 | report_frame = true; |
86552017 | 4391 | } |
37ad3888 | 4392 | |
86552017 | 4393 | out: |
de3d43a3 | 4394 | if (report_frame) |
6ff57cf8 JB |
4395 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4396 | IEEE80211_DEAUTH_FRAME_LEN); | |
86552017 | 4397 | |
f0706e82 JB |
4398 | return 0; |
4399 | } | |
84363e6e | 4400 | |
77fdaa12 | 4401 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4402 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4403 | { |
77fdaa12 | 4404 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4405 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4406 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4407 | |
8d8b261a JB |
4408 | /* |
4409 | * cfg80211 should catch this ... but it's racy since | |
4410 | * we can receive a disassoc frame, process it, hand it | |
4411 | * to cfg80211 while that's in a locked section already | |
4412 | * trying to tell us that the user wants to disconnect. | |
4413 | */ | |
8d61ffa5 | 4414 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4415 | return -ENOLINK; |
77fdaa12 | 4416 | |
bdcbd8e0 JB |
4417 | sdata_info(sdata, |
4418 | "disassociating from %pM by local choice (reason=%d)\n", | |
4419 | req->bss->bssid, req->reason_code); | |
0ff71613 | 4420 | |
e69e95db | 4421 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4422 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4423 | req->reason_code, !req->local_state_change, | |
4424 | frame_buf); | |
10f644a4 | 4425 | |
6ff57cf8 JB |
4426 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4427 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4428 | |
10f644a4 JB |
4429 | return 0; |
4430 | } | |
026331c4 | 4431 | |
afa762f6 | 4432 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4433 | { |
4434 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4435 | ||
49921859 BG |
4436 | /* |
4437 | * Make sure some work items will not run after this, | |
4438 | * they will not do anything but might not have been | |
4439 | * cancelled when disconnecting. | |
4440 | */ | |
4441 | cancel_work_sync(&ifmgd->monitor_work); | |
4442 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4443 | cancel_work_sync(&ifmgd->request_smps_work); | |
4444 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4445 | cancel_work_sync(&ifmgd->chswitch_work); | |
4446 | ||
8d61ffa5 | 4447 | sdata_lock(sdata); |
54e4ffb2 JB |
4448 | if (ifmgd->assoc_data) |
4449 | ieee80211_destroy_assoc_data(sdata, false); | |
4450 | if (ifmgd->auth_data) | |
4451 | ieee80211_destroy_auth_data(sdata, false); | |
4452 | del_timer_sync(&ifmgd->timer); | |
8d61ffa5 | 4453 | sdata_unlock(sdata); |
54e4ffb2 JB |
4454 | } |
4455 | ||
a97c13c3 JO |
4456 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4457 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4458 | gfp_t gfp) | |
4459 | { | |
4460 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4461 | ||
b5878a2d JB |
4462 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4463 | ||
a97c13c3 JO |
4464 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4465 | } | |
4466 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |