Commit | Line | Data |
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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> |
d0709a65 | 19 | #include <linux/rtnetlink.h> |
10f644a4 | 20 | #include <linux/pm_qos_params.h> |
d91f36db | 21 | #include <linux/crc32.h> |
f0706e82 | 22 | #include <net/mac80211.h> |
472dbc45 | 23 | #include <asm/unaligned.h> |
60f8b39c | 24 | |
f0706e82 | 25 | #include "ieee80211_i.h" |
24487981 | 26 | #include "driver-ops.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f0706e82 | 29 | |
6042a3e3 | 30 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
31 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
32 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
33 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
34 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
35 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
a971be22 | 36 | #define IEEE80211_PROBE_WAIT (HZ / 5) |
15b7b062 | 37 | #define IEEE80211_PROBE_IDLE_TIME (60 * HZ) |
f0706e82 | 38 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) |
f0706e82 | 39 | |
5bb644a0 JB |
40 | #define TMR_RUNNING_TIMER 0 |
41 | #define TMR_RUNNING_CHANSW 1 | |
42 | ||
5484e237 JB |
43 | /* utils */ |
44 | static int ecw2cw(int ecw) | |
60f8b39c | 45 | { |
5484e237 | 46 | return (1 << ecw) - 1; |
60f8b39c JB |
47 | } |
48 | ||
c2b13452 | 49 | static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) |
43ac2ca3 JM |
50 | { |
51 | u8 *end, *pos; | |
52 | ||
00d3f14c | 53 | pos = bss->cbss.information_elements; |
43ac2ca3 JM |
54 | if (pos == NULL) |
55 | return NULL; | |
00d3f14c | 56 | end = pos + bss->cbss.len_information_elements; |
43ac2ca3 JM |
57 | |
58 | while (pos + 1 < end) { | |
59 | if (pos + 2 + pos[1] > end) | |
60 | break; | |
61 | if (pos[0] == ie) | |
62 | return pos; | |
63 | pos += 2 + pos[1]; | |
64 | } | |
65 | ||
66 | return NULL; | |
67 | } | |
68 | ||
c2b13452 | 69 | static int ieee80211_compatible_rates(struct ieee80211_bss *bss, |
9ac19a90 | 70 | struct ieee80211_supported_band *sband, |
881d948c | 71 | u32 *rates) |
9ac19a90 JB |
72 | { |
73 | int i, j, count; | |
74 | *rates = 0; | |
75 | count = 0; | |
76 | for (i = 0; i < bss->supp_rates_len; i++) { | |
77 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
78 | ||
79 | for (j = 0; j < sband->n_bitrates; j++) | |
80 | if (sband->bitrates[j].bitrate == rate) { | |
81 | *rates |= BIT(j); | |
82 | count++; | |
83 | break; | |
84 | } | |
85 | } | |
86 | ||
87 | return count; | |
88 | } | |
89 | ||
d5522e03 JB |
90 | /* |
91 | * ieee80211_enable_ht should be called only after the operating band | |
92 | * has been determined as ht configuration depends on the hw's | |
93 | * HT abilities for a specific band. | |
94 | */ | |
95 | static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, | |
96 | struct ieee80211_ht_info *hti, | |
97 | u16 ap_ht_cap_flags) | |
98 | { | |
99 | struct ieee80211_local *local = sdata->local; | |
100 | struct ieee80211_supported_band *sband; | |
101 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d5522e03 JB |
102 | struct sta_info *sta; |
103 | u32 changed = 0; | |
9ed6bcce | 104 | u16 ht_opmode; |
d5522e03 JB |
105 | bool enable_ht = true, ht_changed; |
106 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
107 | ||
108 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
109 | ||
d5522e03 JB |
110 | /* HT is not supported */ |
111 | if (!sband->ht_cap.ht_supported) | |
112 | enable_ht = false; | |
113 | ||
114 | /* check that channel matches the right operating channel */ | |
115 | if (local->hw.conf.channel->center_freq != | |
116 | ieee80211_channel_to_frequency(hti->control_chan)) | |
117 | enable_ht = false; | |
118 | ||
119 | if (enable_ht) { | |
120 | channel_type = NL80211_CHAN_HT20; | |
121 | ||
122 | if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && | |
123 | (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && | |
124 | (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
125 | switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
126 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
768777ea LR |
127 | if (!(local->hw.conf.channel->flags & |
128 | IEEE80211_CHAN_NO_HT40PLUS)) | |
129 | channel_type = NL80211_CHAN_HT40PLUS; | |
d5522e03 JB |
130 | break; |
131 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
768777ea LR |
132 | if (!(local->hw.conf.channel->flags & |
133 | IEEE80211_CHAN_NO_HT40MINUS)) | |
134 | channel_type = NL80211_CHAN_HT40MINUS; | |
d5522e03 JB |
135 | break; |
136 | } | |
137 | } | |
138 | } | |
139 | ||
140 | ht_changed = conf_is_ht(&local->hw.conf) != enable_ht || | |
141 | channel_type != local->hw.conf.channel_type; | |
142 | ||
143 | local->oper_channel_type = channel_type; | |
144 | ||
145 | if (ht_changed) { | |
146 | /* channel_type change automatically detected */ | |
147 | ieee80211_hw_config(local, 0); | |
148 | ||
149 | rcu_read_lock(); | |
150 | ||
151 | sta = sta_info_get(local, ifmgd->bssid); | |
152 | if (sta) | |
153 | rate_control_rate_update(local, sband, sta, | |
154 | IEEE80211_RC_HT_CHANGED); | |
155 | ||
156 | rcu_read_unlock(); | |
d5522e03 JB |
157 | } |
158 | ||
159 | /* disable HT */ | |
160 | if (!enable_ht) | |
161 | return 0; | |
162 | ||
9ed6bcce | 163 | ht_opmode = le16_to_cpu(hti->operation_mode); |
d5522e03 JB |
164 | |
165 | /* if bss configuration changed store the new one */ | |
413ad50a JB |
166 | if (!sdata->ht_opmode_valid || |
167 | sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
d5522e03 | 168 | changed |= BSS_CHANGED_HT; |
9ed6bcce | 169 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
413ad50a | 170 | sdata->ht_opmode_valid = true; |
d5522e03 JB |
171 | } |
172 | ||
173 | return changed; | |
174 | } | |
175 | ||
9c6bd790 JB |
176 | /* frame sending functions */ |
177 | ||
46900298 | 178 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
9ac19a90 | 179 | { |
46900298 | 180 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
181 | struct ieee80211_local *local = sdata->local; |
182 | struct sk_buff *skb; | |
183 | struct ieee80211_mgmt *mgmt; | |
65fc73ac | 184 | u8 *pos, *ies, *ht_ie; |
9ac19a90 JB |
185 | int i, len, count, rates_len, supp_rates_len; |
186 | u16 capab; | |
c2b13452 | 187 | struct ieee80211_bss *bss; |
9ac19a90 JB |
188 | int wmm = 0; |
189 | struct ieee80211_supported_band *sband; | |
881d948c | 190 | u32 rates = 0; |
9ac19a90 JB |
191 | |
192 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
46900298 | 193 | sizeof(*mgmt) + 200 + ifmgd->extra_ie_len + |
65fc73ac | 194 | ifmgd->ssid_len); |
9ac19a90 JB |
195 | if (!skb) { |
196 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
197 | "frame\n", sdata->dev->name); | |
198 | return; | |
199 | } | |
200 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
201 | ||
202 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
203 | ||
46900298 | 204 | capab = ifmgd->capab; |
9ac19a90 JB |
205 | |
206 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
207 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
208 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
209 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
210 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
211 | } | |
212 | ||
46900298 | 213 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
9ac19a90 | 214 | local->hw.conf.channel->center_freq, |
46900298 | 215 | ifmgd->ssid, ifmgd->ssid_len); |
9ac19a90 | 216 | if (bss) { |
00d3f14c | 217 | if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY) |
9ac19a90 JB |
218 | capab |= WLAN_CAPABILITY_PRIVACY; |
219 | if (bss->wmm_used) | |
220 | wmm = 1; | |
221 | ||
222 | /* get all rates supported by the device and the AP as | |
223 | * some APs don't like getting a superset of their rates | |
224 | * in the association request (e.g. D-Link DAP 1353 in | |
225 | * b-only mode) */ | |
226 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
227 | ||
00d3f14c | 228 | if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
9ac19a90 JB |
229 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
230 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
231 | ||
232 | ieee80211_rx_bss_put(local, bss); | |
233 | } else { | |
234 | rates = ~0; | |
235 | rates_len = sband->n_bitrates; | |
236 | } | |
237 | ||
238 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
239 | memset(mgmt, 0, 24); | |
46900298 | 240 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 241 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 242 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 243 | |
46900298 | 244 | if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) { |
9ac19a90 JB |
245 | skb_put(skb, 10); |
246 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
247 | IEEE80211_STYPE_REASSOC_REQ); | |
248 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
249 | mgmt->u.reassoc_req.listen_interval = | |
250 | cpu_to_le16(local->hw.conf.listen_interval); | |
46900298 | 251 | memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid, |
9ac19a90 JB |
252 | ETH_ALEN); |
253 | } else { | |
254 | skb_put(skb, 4); | |
255 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
256 | IEEE80211_STYPE_ASSOC_REQ); | |
257 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
13554121 | 258 | mgmt->u.assoc_req.listen_interval = |
9ac19a90 JB |
259 | cpu_to_le16(local->hw.conf.listen_interval); |
260 | } | |
261 | ||
262 | /* SSID */ | |
46900298 | 263 | ies = pos = skb_put(skb, 2 + ifmgd->ssid_len); |
9ac19a90 | 264 | *pos++ = WLAN_EID_SSID; |
46900298 JB |
265 | *pos++ = ifmgd->ssid_len; |
266 | memcpy(pos, ifmgd->ssid, ifmgd->ssid_len); | |
9ac19a90 JB |
267 | |
268 | /* add all rates which were marked to be used above */ | |
269 | supp_rates_len = rates_len; | |
270 | if (supp_rates_len > 8) | |
271 | supp_rates_len = 8; | |
272 | ||
273 | len = sband->n_bitrates; | |
274 | pos = skb_put(skb, supp_rates_len + 2); | |
275 | *pos++ = WLAN_EID_SUPP_RATES; | |
276 | *pos++ = supp_rates_len; | |
277 | ||
278 | count = 0; | |
279 | for (i = 0; i < sband->n_bitrates; i++) { | |
280 | if (BIT(i) & rates) { | |
281 | int rate = sband->bitrates[i].bitrate; | |
282 | *pos++ = (u8) (rate / 5); | |
283 | if (++count == 8) | |
284 | break; | |
285 | } | |
286 | } | |
287 | ||
288 | if (rates_len > count) { | |
289 | pos = skb_put(skb, rates_len - count + 2); | |
290 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
291 | *pos++ = rates_len - count; | |
292 | ||
293 | for (i++; i < sband->n_bitrates; i++) { | |
294 | if (BIT(i) & rates) { | |
295 | int rate = sband->bitrates[i].bitrate; | |
296 | *pos++ = (u8) (rate / 5); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
302 | /* 1. power capabilities */ | |
303 | pos = skb_put(skb, 4); | |
304 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
305 | *pos++ = 2; | |
306 | *pos++ = 0; /* min tx power */ | |
307 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
308 | ||
309 | /* 2. supported channels */ | |
310 | /* TODO: get this in reg domain format */ | |
311 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
312 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
313 | *pos++ = 2 * sband->n_channels; | |
314 | for (i = 0; i < sband->n_channels; i++) { | |
315 | *pos++ = ieee80211_frequency_to_channel( | |
316 | sband->channels[i].center_freq); | |
317 | *pos++ = 1; /* one channel in the subband*/ | |
318 | } | |
319 | } | |
320 | ||
46900298 JB |
321 | if (ifmgd->extra_ie) { |
322 | pos = skb_put(skb, ifmgd->extra_ie_len); | |
323 | memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len); | |
9ac19a90 JB |
324 | } |
325 | ||
46900298 | 326 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) { |
9ac19a90 JB |
327 | pos = skb_put(skb, 9); |
328 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
329 | *pos++ = 7; /* len */ | |
330 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
331 | *pos++ = 0x50; | |
332 | *pos++ = 0xf2; | |
333 | *pos++ = 2; /* WME */ | |
334 | *pos++ = 0; /* WME info */ | |
335 | *pos++ = 1; /* WME ver */ | |
336 | *pos++ = 0; | |
337 | } | |
338 | ||
339 | /* wmm support is a must to HT */ | |
eb46936b VT |
340 | /* |
341 | * IEEE802.11n does not allow TKIP/WEP as pairwise | |
342 | * ciphers in HT mode. We still associate in non-ht | |
343 | * mode (11a/b/g) if any one of these ciphers is | |
344 | * configured as pairwise. | |
345 | */ | |
46900298 | 346 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
d9fe60de JB |
347 | sband->ht_cap.ht_supported && |
348 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && | |
eb46936b | 349 | ht_ie[1] >= sizeof(struct ieee80211_ht_info) && |
46900298 | 350 | (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) { |
d9fe60de JB |
351 | struct ieee80211_ht_info *ht_info = |
352 | (struct ieee80211_ht_info *)(ht_ie + 2); | |
353 | u16 cap = sband->ht_cap.cap; | |
9ac19a90 JB |
354 | __le16 tmp; |
355 | u32 flags = local->hw.conf.channel->flags; | |
356 | ||
d9fe60de JB |
357 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
358 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
689da1b3 | 359 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { |
d9fe60de | 360 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
361 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
362 | } | |
363 | break; | |
d9fe60de | 364 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
689da1b3 | 365 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { |
d9fe60de | 366 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
367 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
368 | } | |
369 | break; | |
370 | } | |
371 | ||
372 | tmp = cpu_to_le16(cap); | |
373 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
374 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
375 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
376 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
377 | memcpy(pos, &tmp, sizeof(u16)); | |
378 | pos += sizeof(u16); | |
379 | /* TODO: needs a define here for << 2 */ | |
d9fe60de JB |
380 | *pos++ = sband->ht_cap.ampdu_factor | |
381 | (sband->ht_cap.ampdu_density << 2); | |
382 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
9ac19a90 JB |
383 | } |
384 | ||
46900298 JB |
385 | kfree(ifmgd->assocreq_ies); |
386 | ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies; | |
387 | ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL); | |
388 | if (ifmgd->assocreq_ies) | |
389 | memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len); | |
9ac19a90 | 390 | |
e50db65c | 391 | ieee80211_tx_skb(sdata, skb, 0); |
9ac19a90 JB |
392 | } |
393 | ||
394 | ||
ef422bc0 JB |
395 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
396 | u16 stype, u16 reason) | |
9ac19a90 JB |
397 | { |
398 | struct ieee80211_local *local = sdata->local; | |
46900298 | 399 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
400 | struct sk_buff *skb; |
401 | struct ieee80211_mgmt *mgmt; | |
9aed3cc1 | 402 | |
65fc73ac | 403 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
9ac19a90 | 404 | if (!skb) { |
ef422bc0 JB |
405 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
406 | "deauth/disassoc frame\n", sdata->dev->name); | |
9ac19a90 JB |
407 | return; |
408 | } | |
409 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
410 | ||
411 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
412 | memset(mgmt, 0, 24); | |
46900298 | 413 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 414 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 415 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
ef422bc0 | 416 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 417 | skb_put(skb, 2); |
ef422bc0 | 418 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
419 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
420 | ||
53b46b84 JM |
421 | if (stype == IEEE80211_STYPE_DEAUTH) |
422 | cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len); | |
423 | else | |
424 | cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len); | |
46900298 | 425 | ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED); |
9ac19a90 JB |
426 | } |
427 | ||
572e0012 KV |
428 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
429 | struct ieee80211_sub_if_data *sdata) | |
430 | { | |
46900298 | 431 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
572e0012 KV |
432 | struct ieee80211_pspoll *pspoll; |
433 | struct sk_buff *skb; | |
434 | u16 fc; | |
435 | ||
436 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); | |
437 | if (!skb) { | |
438 | printk(KERN_DEBUG "%s: failed to allocate buffer for " | |
439 | "pspoll frame\n", sdata->dev->name); | |
440 | return; | |
441 | } | |
442 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
443 | ||
444 | pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); | |
445 | memset(pspoll, 0, sizeof(*pspoll)); | |
446 | fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; | |
447 | pspoll->frame_control = cpu_to_le16(fc); | |
46900298 | 448 | pspoll->aid = cpu_to_le16(ifmgd->aid); |
572e0012 KV |
449 | |
450 | /* aid in PS-Poll has its two MSBs each set to 1 */ | |
451 | pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); | |
452 | ||
46900298 | 453 | memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); |
572e0012 KV |
454 | memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN); |
455 | ||
456 | ieee80211_tx_skb(sdata, skb, 0); | |
572e0012 KV |
457 | } |
458 | ||
965bedad JB |
459 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
460 | struct ieee80211_sub_if_data *sdata, | |
461 | int powersave) | |
462 | { | |
463 | struct sk_buff *skb; | |
464 | struct ieee80211_hdr *nullfunc; | |
465 | __le16 fc; | |
466 | ||
467 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
468 | return; | |
469 | ||
470 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
471 | if (!skb) { | |
472 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
473 | "frame\n", sdata->dev->name); | |
474 | return; | |
475 | } | |
476 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
477 | ||
478 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
479 | memset(nullfunc, 0, 24); | |
480 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
481 | IEEE80211_FCTL_TODS); | |
482 | if (powersave) | |
483 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); | |
484 | nullfunc->frame_control = fc; | |
485 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
486 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
487 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
488 | ||
489 | ieee80211_tx_skb(sdata, skb, 0); | |
490 | } | |
491 | ||
cc32abd4 JB |
492 | /* spectrum management related things */ |
493 | static void ieee80211_chswitch_work(struct work_struct *work) | |
494 | { | |
495 | struct ieee80211_sub_if_data *sdata = | |
496 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
497 | struct ieee80211_bss *bss; | |
498 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
499 | ||
500 | if (!netif_running(sdata->dev)) | |
501 | return; | |
502 | ||
503 | bss = ieee80211_rx_bss_get(sdata->local, ifmgd->bssid, | |
504 | sdata->local->hw.conf.channel->center_freq, | |
505 | ifmgd->ssid, ifmgd->ssid_len); | |
506 | if (!bss) | |
507 | goto exit; | |
508 | ||
509 | sdata->local->oper_channel = sdata->local->csa_channel; | |
510 | /* XXX: shouldn't really modify cfg80211-owned data! */ | |
511 | if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL)) | |
512 | bss->cbss.channel = sdata->local->oper_channel; | |
513 | ||
514 | ieee80211_rx_bss_put(sdata->local, bss); | |
515 | exit: | |
516 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
517 | ieee80211_wake_queues_by_reason(&sdata->local->hw, | |
518 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
519 | } | |
520 | ||
521 | static void ieee80211_chswitch_timer(unsigned long data) | |
522 | { | |
523 | struct ieee80211_sub_if_data *sdata = | |
524 | (struct ieee80211_sub_if_data *) data; | |
525 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
526 | ||
5bb644a0 JB |
527 | if (sdata->local->quiescing) { |
528 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
529 | return; | |
530 | } | |
531 | ||
cc32abd4 JB |
532 | queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); |
533 | } | |
534 | ||
535 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
536 | struct ieee80211_channel_sw_ie *sw_elem, | |
537 | struct ieee80211_bss *bss) | |
538 | { | |
539 | struct ieee80211_channel *new_ch; | |
540 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
541 | int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); | |
542 | ||
543 | if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATED) | |
544 | return; | |
545 | ||
546 | if (sdata->local->sw_scanning || sdata->local->hw_scanning) | |
547 | return; | |
548 | ||
549 | /* Disregard subsequent beacons if we are already running a timer | |
550 | processing a CSA */ | |
551 | ||
552 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) | |
553 | return; | |
554 | ||
555 | new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); | |
556 | if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) | |
557 | return; | |
558 | ||
559 | sdata->local->csa_channel = new_ch; | |
560 | ||
561 | if (sw_elem->count <= 1) { | |
562 | queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); | |
563 | } else { | |
564 | ieee80211_stop_queues_by_reason(&sdata->local->hw, | |
565 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
566 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; | |
567 | mod_timer(&ifmgd->chswitch_timer, | |
568 | jiffies + | |
569 | msecs_to_jiffies(sw_elem->count * | |
570 | bss->cbss.beacon_interval)); | |
571 | } | |
572 | } | |
573 | ||
574 | static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
575 | u16 capab_info, u8 *pwr_constr_elem, | |
576 | u8 pwr_constr_elem_len) | |
577 | { | |
578 | struct ieee80211_conf *conf = &sdata->local->hw.conf; | |
579 | ||
580 | if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
581 | return; | |
582 | ||
583 | /* Power constraint IE length should be 1 octet */ | |
584 | if (pwr_constr_elem_len != 1) | |
585 | return; | |
586 | ||
587 | if ((*pwr_constr_elem <= conf->channel->max_power) && | |
588 | (*pwr_constr_elem != sdata->local->power_constr_level)) { | |
589 | sdata->local->power_constr_level = *pwr_constr_elem; | |
590 | ieee80211_hw_config(sdata->local, 0); | |
591 | } | |
592 | } | |
593 | ||
965bedad JB |
594 | /* powersave */ |
595 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
596 | struct ieee80211_sub_if_data *sdata) | |
597 | { | |
598 | struct ieee80211_conf *conf = &local->hw.conf; | |
599 | ||
d5edaedc JB |
600 | /* |
601 | * If we are scanning right now then the parameters will | |
602 | * take effect when scan finishes. | |
603 | */ | |
604 | if (local->hw_scanning || local->sw_scanning) | |
605 | return; | |
606 | ||
965bedad JB |
607 | if (conf->dynamic_ps_timeout > 0 && |
608 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
609 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
610 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
611 | } else { | |
612 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
613 | ieee80211_send_nullfunc(local, sdata, 1); | |
614 | conf->flags |= IEEE80211_CONF_PS; | |
615 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
616 | } | |
617 | } | |
618 | ||
619 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
620 | { | |
621 | struct ieee80211_conf *conf = &local->hw.conf; | |
622 | ||
623 | if (local->ps_sdata) { | |
965bedad JB |
624 | ieee80211_enable_ps(local, local->ps_sdata); |
625 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
626 | conf->flags &= ~IEEE80211_CONF_PS; | |
627 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
628 | del_timer_sync(&local->dynamic_ps_timer); | |
629 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
630 | } | |
631 | } | |
632 | ||
633 | /* need to hold RTNL or interface lock */ | |
10f644a4 | 634 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
635 | { |
636 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
637 | int count = 0; | |
638 | ||
639 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
640 | local->ps_sdata = NULL; | |
641 | return; | |
642 | } | |
643 | ||
644 | list_for_each_entry(sdata, &local->interfaces, list) { | |
645 | if (!netif_running(sdata->dev)) | |
646 | continue; | |
647 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
648 | continue; | |
649 | found = sdata; | |
650 | count++; | |
651 | } | |
652 | ||
43f78531 | 653 | if (count == 1 && found->u.mgd.powersave && |
4e751843 JB |
654 | (found->u.mgd.flags & IEEE80211_STA_ASSOCIATED) && |
655 | !(found->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL)) { | |
10f644a4 JB |
656 | s32 beaconint_us; |
657 | ||
658 | if (latency < 0) | |
659 | latency = pm_qos_requirement(PM_QOS_NETWORK_LATENCY); | |
660 | ||
661 | beaconint_us = ieee80211_tu_to_usec( | |
662 | found->vif.bss_conf.beacon_int); | |
663 | ||
04fe2037 | 664 | if (beaconint_us > latency) { |
10f644a4 | 665 | local->ps_sdata = NULL; |
04fe2037 JB |
666 | } else { |
667 | u8 dtimper = found->vif.bss_conf.dtim_period; | |
668 | int maxslp = 1; | |
669 | ||
670 | if (dtimper > 1) | |
671 | maxslp = min_t(int, dtimper, | |
672 | latency / beaconint_us); | |
673 | ||
9ccebe61 | 674 | local->hw.conf.max_sleep_period = maxslp; |
10f644a4 | 675 | local->ps_sdata = found; |
04fe2037 | 676 | } |
10f644a4 | 677 | } else { |
965bedad | 678 | local->ps_sdata = NULL; |
10f644a4 | 679 | } |
965bedad JB |
680 | |
681 | ieee80211_change_ps(local); | |
682 | } | |
683 | ||
684 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) | |
685 | { | |
686 | struct ieee80211_local *local = | |
687 | container_of(work, struct ieee80211_local, | |
688 | dynamic_ps_disable_work); | |
689 | ||
690 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
691 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
692 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
693 | } | |
694 | ||
695 | ieee80211_wake_queues_by_reason(&local->hw, | |
696 | IEEE80211_QUEUE_STOP_REASON_PS); | |
697 | } | |
698 | ||
699 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
700 | { | |
701 | struct ieee80211_local *local = | |
702 | container_of(work, struct ieee80211_local, | |
703 | dynamic_ps_enable_work); | |
704 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
705 | ||
706 | /* can only happen when PS was just disabled anyway */ | |
707 | if (!sdata) | |
708 | return; | |
709 | ||
710 | if (local->hw.conf.flags & IEEE80211_CONF_PS) | |
711 | return; | |
712 | ||
713 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
714 | ieee80211_send_nullfunc(local, sdata, 1); | |
715 | ||
716 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
717 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
718 | } | |
719 | ||
720 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
721 | { | |
722 | struct ieee80211_local *local = (void *) data; | |
723 | ||
5bb644a0 JB |
724 | if (local->quiescing) |
725 | return; | |
726 | ||
965bedad JB |
727 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); |
728 | } | |
729 | ||
60f8b39c | 730 | /* MLME */ |
f698d856 | 731 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
46900298 | 732 | struct ieee80211_if_managed *ifmgd, |
f0706e82 JB |
733 | u8 *wmm_param, size_t wmm_param_len) |
734 | { | |
f0706e82 JB |
735 | struct ieee80211_tx_queue_params params; |
736 | size_t left; | |
737 | int count; | |
738 | u8 *pos; | |
739 | ||
46900298 | 740 | if (!(ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) |
3434fbd3 JB |
741 | return; |
742 | ||
743 | if (!wmm_param) | |
744 | return; | |
745 | ||
f0706e82 JB |
746 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
747 | return; | |
748 | count = wmm_param[6] & 0x0f; | |
46900298 | 749 | if (count == ifmgd->wmm_last_param_set) |
f0706e82 | 750 | return; |
46900298 | 751 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
752 | |
753 | pos = wmm_param + 8; | |
754 | left = wmm_param_len - 8; | |
755 | ||
756 | memset(¶ms, 0, sizeof(params)); | |
757 | ||
f0706e82 JB |
758 | local->wmm_acm = 0; |
759 | for (; left >= 4; left -= 4, pos += 4) { | |
760 | int aci = (pos[0] >> 5) & 0x03; | |
761 | int acm = (pos[0] >> 4) & 0x01; | |
762 | int queue; | |
763 | ||
764 | switch (aci) { | |
0eeb59fe | 765 | case 1: /* AC_BK */ |
e100bb64 | 766 | queue = 3; |
988c0f72 | 767 | if (acm) |
0eeb59fe | 768 | local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
f0706e82 | 769 | break; |
0eeb59fe | 770 | case 2: /* AC_VI */ |
e100bb64 | 771 | queue = 1; |
988c0f72 | 772 | if (acm) |
0eeb59fe | 773 | local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
f0706e82 | 774 | break; |
0eeb59fe | 775 | case 3: /* AC_VO */ |
e100bb64 | 776 | queue = 0; |
988c0f72 | 777 | if (acm) |
0eeb59fe | 778 | local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
f0706e82 | 779 | break; |
0eeb59fe | 780 | case 0: /* AC_BE */ |
f0706e82 | 781 | default: |
e100bb64 | 782 | queue = 2; |
988c0f72 | 783 | if (acm) |
0eeb59fe | 784 | local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
f0706e82 JB |
785 | break; |
786 | } | |
787 | ||
788 | params.aifs = pos[0] & 0x0f; | |
789 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
790 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 791 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 792 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 793 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 794 | "cWmin=%d cWmax=%d txop=%d\n", |
0bffe40f JB |
795 | wiphy_name(local->hw.wiphy), queue, aci, acm, |
796 | params.aifs, params.cw_min, params.cw_max, params.txop); | |
3330d7be | 797 | #endif |
24487981 | 798 | if (drv_conf_tx(local, queue, ¶ms) && local->ops->conf_tx) |
f0706e82 | 799 | printk(KERN_DEBUG "%s: failed to set TX queue " |
0bffe40f JB |
800 | "parameters for queue %d\n", |
801 | wiphy_name(local->hw.wiphy), queue); | |
f0706e82 JB |
802 | } |
803 | } | |
804 | ||
7a5158ef JB |
805 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
806 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 807 | { |
bda3933a | 808 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ebd74487 | 809 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
46900298 | 810 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
ebd74487 | 811 | #endif |
471b3efd | 812 | u32 changed = 0; |
7a5158ef JB |
813 | bool use_protection; |
814 | bool use_short_preamble; | |
815 | bool use_short_slot; | |
816 | ||
817 | if (erp_valid) { | |
818 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
819 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
820 | } else { | |
821 | use_protection = false; | |
822 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
823 | } | |
824 | ||
825 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
5628221c | 826 | |
471b3efd | 827 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 828 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 829 | if (net_ratelimit()) { |
0c68ae26 | 830 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
471b3efd | 831 | sdata->dev->name, |
5628221c | 832 | use_protection ? "enabled" : "disabled", |
46900298 | 833 | ifmgd->bssid); |
5628221c | 834 | } |
f4ea83dd | 835 | #endif |
471b3efd JB |
836 | bss_conf->use_cts_prot = use_protection; |
837 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 838 | } |
7e9ed188 | 839 | |
d43c7b37 | 840 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 841 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
842 | if (net_ratelimit()) { |
843 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0c68ae26 | 844 | " (BSSID=%pM)\n", |
471b3efd | 845 | sdata->dev->name, |
d43c7b37 | 846 | use_short_preamble ? "short" : "long", |
46900298 | 847 | ifmgd->bssid); |
7e9ed188 | 848 | } |
f4ea83dd | 849 | #endif |
d43c7b37 | 850 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 851 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 852 | } |
d9430a32 | 853 | |
7a5158ef JB |
854 | if (use_short_slot != bss_conf->use_short_slot) { |
855 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
856 | if (net_ratelimit()) { | |
391429c1 CL |
857 | printk(KERN_DEBUG "%s: switched to %s slot time" |
858 | " (BSSID=%pM)\n", | |
7a5158ef JB |
859 | sdata->dev->name, |
860 | use_short_slot ? "short" : "long", | |
46900298 | 861 | ifmgd->bssid); |
7a5158ef JB |
862 | } |
863 | #endif | |
864 | bss_conf->use_short_slot = use_short_slot; | |
865 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
866 | } |
867 | ||
868 | return changed; | |
869 | } | |
870 | ||
46900298 | 871 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata) |
f5e5bf25 TW |
872 | { |
873 | union iwreq_data wrqu; | |
46900298 | 874 | |
f5e5bf25 | 875 | memset(&wrqu, 0, sizeof(wrqu)); |
46900298 JB |
876 | if (sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED) |
877 | memcpy(wrqu.ap_addr.sa_data, sdata->u.mgd.bssid, ETH_ALEN); | |
f5e5bf25 TW |
878 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
879 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
880 | } | |
881 | ||
46900298 | 882 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 883 | { |
46900298 | 884 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
74af0250 LT |
885 | char *buf; |
886 | size_t len; | |
887 | int i; | |
f0706e82 JB |
888 | union iwreq_data wrqu; |
889 | ||
46900298 | 890 | if (!ifmgd->assocreq_ies && !ifmgd->assocresp_ies) |
74af0250 LT |
891 | return; |
892 | ||
46900298 JB |
893 | buf = kmalloc(50 + 2 * (ifmgd->assocreq_ies_len + |
894 | ifmgd->assocresp_ies_len), GFP_KERNEL); | |
74af0250 LT |
895 | if (!buf) |
896 | return; | |
897 | ||
898 | len = sprintf(buf, "ASSOCINFO("); | |
46900298 | 899 | if (ifmgd->assocreq_ies) { |
74af0250 | 900 | len += sprintf(buf + len, "ReqIEs="); |
46900298 | 901 | for (i = 0; i < ifmgd->assocreq_ies_len; i++) { |
74af0250 | 902 | len += sprintf(buf + len, "%02x", |
46900298 | 903 | ifmgd->assocreq_ies[i]); |
74af0250 | 904 | } |
f0706e82 | 905 | } |
46900298 JB |
906 | if (ifmgd->assocresp_ies) { |
907 | if (ifmgd->assocreq_ies) | |
74af0250 LT |
908 | len += sprintf(buf + len, " "); |
909 | len += sprintf(buf + len, "RespIEs="); | |
46900298 | 910 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 911 | len += sprintf(buf + len, "%02x", |
46900298 | 912 | ifmgd->assocresp_ies[i]); |
74af0250 | 913 | } |
f0706e82 | 914 | } |
74af0250 LT |
915 | len += sprintf(buf + len, ")"); |
916 | ||
917 | if (len > IW_CUSTOM_MAX) { | |
918 | len = sprintf(buf, "ASSOCRESPIE="); | |
46900298 | 919 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 920 | len += sprintf(buf + len, "%02x", |
46900298 | 921 | ifmgd->assocresp_ies[i]); |
74af0250 LT |
922 | } |
923 | } | |
924 | ||
ad788b5e JL |
925 | if (len <= IW_CUSTOM_MAX) { |
926 | memset(&wrqu, 0, sizeof(wrqu)); | |
927 | wrqu.data.length = len; | |
928 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); | |
929 | } | |
74af0250 LT |
930 | |
931 | kfree(buf); | |
f0706e82 JB |
932 | } |
933 | ||
934 | ||
f698d856 | 935 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
ae5eb026 | 936 | u32 bss_info_changed) |
f0706e82 | 937 | { |
46900298 | 938 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 939 | struct ieee80211_local *local = sdata->local; |
38668c05 | 940 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 941 | |
c2b13452 | 942 | struct ieee80211_bss *bss; |
d6f2da5b | 943 | |
ae5eb026 | 944 | bss_info_changed |= BSS_CHANGED_ASSOC; |
46900298 | 945 | ifmgd->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 946 | |
46900298 | 947 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
f5e5bf25 | 948 | conf->channel->center_freq, |
46900298 | 949 | ifmgd->ssid, ifmgd->ssid_len); |
f5e5bf25 TW |
950 | if (bss) { |
951 | /* set timing information */ | |
00d3f14c JB |
952 | sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; |
953 | sdata->vif.bss_conf.timestamp = bss->cbss.tsf; | |
bda3933a | 954 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
21c0cbe7 | 955 | |
57c4d7b4 | 956 | bss_info_changed |= BSS_CHANGED_BEACON_INT; |
ae5eb026 | 957 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
00d3f14c | 958 | bss->cbss.capability, bss->has_erp_value, bss->erp_value); |
9ac19a90 | 959 | |
04de8381 KV |
960 | cfg80211_hold_bss(&bss->cbss); |
961 | ||
9ac19a90 | 962 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
963 | } |
964 | ||
46900298 JB |
965 | ifmgd->flags |= IEEE80211_STA_PREV_BSSID_SET; |
966 | memcpy(ifmgd->prev_bssid, sdata->u.mgd.bssid, ETH_ALEN); | |
967 | ieee80211_sta_send_associnfo(sdata); | |
9306102e | 968 | |
46900298 | 969 | ifmgd->last_probe = jiffies; |
9ac19a90 | 970 | ieee80211_led_assoc(local, 1); |
9306102e | 971 | |
bda3933a | 972 | sdata->vif.bss_conf.assoc = 1; |
96dd22ac JB |
973 | /* |
974 | * For now just always ask the driver to update the basic rateset | |
975 | * when we have associated, we aren't checking whether it actually | |
976 | * changed or not. | |
977 | */ | |
ae5eb026 | 978 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
9cef8737 JB |
979 | |
980 | /* And the BSSID changed - we're associated now */ | |
981 | bss_info_changed |= BSS_CHANGED_BSSID; | |
982 | ||
ae5eb026 | 983 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 984 | |
965bedad | 985 | /* will be same as sdata */ |
04fe2037 JB |
986 | if (local->ps_sdata) { |
987 | mutex_lock(&local->iflist_mtx); | |
988 | ieee80211_recalc_ps(local, -1); | |
989 | mutex_unlock(&local->iflist_mtx); | |
990 | } | |
e0cb686f | 991 | |
9ac19a90 JB |
992 | netif_tx_start_all_queues(sdata->dev); |
993 | netif_carrier_on(sdata->dev); | |
f0706e82 | 994 | |
46900298 | 995 | ieee80211_sta_send_apinfo(sdata); |
f0706e82 JB |
996 | } |
997 | ||
46900298 | 998 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 999 | { |
46900298 | 1000 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1001 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
1002 | |
1003 | ifmgd->direct_probe_tries++; | |
1004 | if (ifmgd->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 1005 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
46900298 JB |
1006 | sdata->dev->name, ifmgd->bssid); |
1007 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1008 | ieee80211_recalc_idle(local); |
e61f2340 | 1009 | cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid); |
7a947080 VT |
1010 | |
1011 | /* | |
1012 | * Most likely AP is not in the range so remove the | |
1013 | * bss information associated to the AP | |
1014 | */ | |
46900298 | 1015 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1016 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1017 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1018 | |
1019 | /* | |
1020 | * We might have a pending scan which had no chance to run yet | |
1021 | * due to state == IEEE80211_STA_MLME_DIRECT_PROBE. | |
1022 | * Hence, queue the STAs work again | |
1023 | */ | |
1024 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1025 | return; |
1026 | } | |
f0706e82 | 1027 | |
0c68ae26 | 1028 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
46900298 JB |
1029 | sdata->dev->name, ifmgd->bssid, |
1030 | ifmgd->direct_probe_tries); | |
f0706e82 | 1031 | |
46900298 | 1032 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 1033 | |
9ac19a90 JB |
1034 | /* Direct probe is sent to broadcast address as some APs |
1035 | * will not answer to direct packet in unassociated state. | |
1036 | */ | |
1037 | ieee80211_send_probe_req(sdata, NULL, | |
70692ad2 | 1038 | ifmgd->ssid, ifmgd->ssid_len, NULL, 0); |
9ac19a90 | 1039 | |
46900298 | 1040 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
60f8b39c | 1041 | } |
f0706e82 | 1042 | |
9ac19a90 | 1043 | |
46900298 | 1044 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1045 | { |
46900298 | 1046 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1047 | struct ieee80211_local *local = sdata->local; |
636a5d36 JM |
1048 | u8 *ies; |
1049 | size_t ies_len; | |
46900298 JB |
1050 | |
1051 | ifmgd->auth_tries++; | |
1052 | if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 1053 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
9ac19a90 | 1054 | " timed out\n", |
46900298 JB |
1055 | sdata->dev->name, ifmgd->bssid); |
1056 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1057 | ieee80211_recalc_idle(local); |
1965c853 | 1058 | cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid); |
46900298 | 1059 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1060 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1061 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1062 | |
1063 | /* | |
1064 | * We might have a pending scan which had no chance to run yet | |
1065 | * due to state == IEEE80211_STA_MLME_AUTHENTICATE. | |
1066 | * Hence, queue the STAs work again | |
1067 | */ | |
1068 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1069 | return; |
1070 | } | |
f0706e82 | 1071 | |
46900298 | 1072 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
0c68ae26 | 1073 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
46900298 | 1074 | sdata->dev->name, ifmgd->bssid); |
f0706e82 | 1075 | |
636a5d36 JM |
1076 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
1077 | ies = ifmgd->sme_auth_ie; | |
1078 | ies_len = ifmgd->sme_auth_ie_len; | |
1079 | } else { | |
1080 | ies = NULL; | |
1081 | ies_len = 0; | |
1082 | } | |
1083 | ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, ies, ies_len, | |
46900298 JB |
1084 | ifmgd->bssid, 0); |
1085 | ifmgd->auth_transaction = 2; | |
9ac19a90 | 1086 | |
46900298 | 1087 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
f0706e82 JB |
1088 | } |
1089 | ||
5925d976 VN |
1090 | /* |
1091 | * The disassoc 'reason' argument can be either our own reason | |
1092 | * if self disconnected or a reason code from the AP. | |
1093 | */ | |
aa458d17 | 1094 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
46900298 JB |
1095 | bool deauth, bool self_disconnected, |
1096 | u16 reason) | |
aa458d17 | 1097 | { |
46900298 | 1098 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1099 | struct ieee80211_local *local = sdata->local; |
04de8381 KV |
1100 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
1101 | struct ieee80211_bss *bss; | |
aa458d17 | 1102 | struct sta_info *sta; |
e0cb686f | 1103 | u32 changed = 0, config_changed = 0; |
aa458d17 | 1104 | |
aa458d17 | 1105 | if (deauth) { |
46900298 JB |
1106 | ifmgd->direct_probe_tries = 0; |
1107 | ifmgd->auth_tries = 0; | |
aa458d17 | 1108 | } |
46900298 JB |
1109 | ifmgd->assoc_scan_tries = 0; |
1110 | ifmgd->assoc_tries = 0; | |
aa458d17 | 1111 | |
24e64622 | 1112 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
1113 | netif_carrier_off(sdata->dev); |
1114 | ||
1fa6f4af JB |
1115 | rcu_read_lock(); |
1116 | sta = sta_info_get(local, ifmgd->bssid); | |
1117 | if (sta) | |
1118 | ieee80211_sta_tear_down_BA_sessions(sta); | |
1119 | rcu_read_unlock(); | |
aa458d17 | 1120 | |
04de8381 KV |
1121 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
1122 | conf->channel->center_freq, | |
1123 | ifmgd->ssid, ifmgd->ssid_len); | |
1124 | ||
1125 | if (bss) { | |
1126 | cfg80211_unhold_bss(&bss->cbss); | |
1127 | ieee80211_rx_bss_put(local, bss); | |
1128 | } | |
1129 | ||
aa458d17 TW |
1130 | if (self_disconnected) { |
1131 | if (deauth) | |
ef422bc0 JB |
1132 | ieee80211_send_deauth_disassoc(sdata, |
1133 | IEEE80211_STYPE_DEAUTH, reason); | |
aa458d17 | 1134 | else |
ef422bc0 JB |
1135 | ieee80211_send_deauth_disassoc(sdata, |
1136 | IEEE80211_STYPE_DISASSOC, reason); | |
aa458d17 TW |
1137 | } |
1138 | ||
46900298 | 1139 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; |
f5e5bf25 TW |
1140 | changed |= ieee80211_reset_erp_info(sdata); |
1141 | ||
f5e5bf25 | 1142 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1143 | changed |= BSS_CHANGED_ASSOC; |
1144 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1145 | |
46900298 | 1146 | ieee80211_sta_send_apinfo(sdata); |
aa458d17 | 1147 | |
7a947080 | 1148 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) { |
46900298 JB |
1149 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
1150 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, | |
7a947080 | 1151 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1152 | ifmgd->ssid, ifmgd->ssid_len); |
7a947080 | 1153 | } |
aa458d17 | 1154 | |
aa837e1d JB |
1155 | ieee80211_set_wmm_default(sdata); |
1156 | ||
5cff20e6 JB |
1157 | ieee80211_recalc_idle(local); |
1158 | ||
4797938c | 1159 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
094d05dc | 1160 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
e0cb686f | 1161 | |
413ad50a JB |
1162 | /* on the next assoc, re-program HT parameters */ |
1163 | sdata->ht_opmode_valid = false; | |
1164 | ||
a8302de9 VT |
1165 | local->power_constr_level = 0; |
1166 | ||
520eb820 KV |
1167 | del_timer_sync(&local->dynamic_ps_timer); |
1168 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1169 | ||
e0cb686f KV |
1170 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
1171 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1172 | config_changed |= IEEE80211_CONF_CHANGE_PS; | |
1173 | } | |
ae5eb026 | 1174 | |
e0cb686f | 1175 | ieee80211_hw_config(local, config_changed); |
9cef8737 JB |
1176 | |
1177 | /* And the BSSID changed -- not very interesting here */ | |
1178 | changed |= BSS_CHANGED_BSSID; | |
ae5eb026 | 1179 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 TW |
1180 | |
1181 | rcu_read_lock(); | |
1182 | ||
46900298 | 1183 | sta = sta_info_get(local, ifmgd->bssid); |
8e268e47 TW |
1184 | if (!sta) { |
1185 | rcu_read_unlock(); | |
1186 | return; | |
1187 | } | |
1188 | ||
1189 | sta_info_unlink(&sta); | |
1190 | ||
1191 | rcu_read_unlock(); | |
1192 | ||
1193 | sta_info_destroy(sta); | |
aa458d17 | 1194 | } |
f0706e82 | 1195 | |
9ac19a90 JB |
1196 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
1197 | { | |
1198 | if (!sdata || !sdata->default_key || | |
1199 | sdata->default_key->conf.alg != ALG_WEP) | |
1200 | return 0; | |
1201 | return 1; | |
1202 | } | |
1203 | ||
46900298 | 1204 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1205 | { |
46900298 | 1206 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1207 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 1208 | struct ieee80211_bss *bss; |
5b98b1f7 JB |
1209 | int bss_privacy; |
1210 | int wep_privacy; | |
1211 | int privacy_invoked; | |
f0706e82 | 1212 | |
7986cf95 | 1213 | if (!ifmgd || (ifmgd->flags & IEEE80211_STA_EXT_SME)) |
f0706e82 JB |
1214 | return 0; |
1215 | ||
46900298 | 1216 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
8318d78a | 1217 | local->hw.conf.channel->center_freq, |
46900298 | 1218 | ifmgd->ssid, ifmgd->ssid_len); |
f0706e82 JB |
1219 | if (!bss) |
1220 | return 0; | |
1221 | ||
00d3f14c | 1222 | bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 1223 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
46900298 | 1224 | privacy_invoked = !!(ifmgd->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 1225 | |
3e122be0 | 1226 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 1227 | |
5b98b1f7 JB |
1228 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
1229 | return 0; | |
1230 | ||
1231 | return 1; | |
f0706e82 JB |
1232 | } |
1233 | ||
46900298 | 1234 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1235 | { |
46900298 | 1236 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1237 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
1238 | |
1239 | ifmgd->assoc_tries++; | |
1240 | if (ifmgd->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0c68ae26 | 1241 | printk(KERN_DEBUG "%s: association with AP %pM" |
f0706e82 | 1242 | " timed out\n", |
46900298 JB |
1243 | sdata->dev->name, ifmgd->bssid); |
1244 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1245 | ieee80211_recalc_idle(local); |
1965c853 | 1246 | cfg80211_send_assoc_timeout(sdata->dev, ifmgd->bssid); |
46900298 | 1247 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1248 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1249 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1250 | /* |
1251 | * We might have a pending scan which had no chance to run yet | |
1252 | * due to state == IEEE80211_STA_MLME_ASSOCIATE. | |
1253 | * Hence, queue the STAs work again | |
1254 | */ | |
1255 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1256 | return; |
1257 | } | |
1258 | ||
46900298 | 1259 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
0c68ae26 | 1260 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
46900298 JB |
1261 | sdata->dev->name, ifmgd->bssid); |
1262 | if (ieee80211_privacy_mismatch(sdata)) { | |
f0706e82 | 1263 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 1264 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
46900298 | 1265 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
5cff20e6 | 1266 | ieee80211_recalc_idle(local); |
f0706e82 JB |
1267 | return; |
1268 | } | |
1269 | ||
46900298 | 1270 | ieee80211_send_assoc(sdata); |
f0706e82 | 1271 | |
46900298 | 1272 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
f0706e82 JB |
1273 | } |
1274 | ||
3cf335d5 KV |
1275 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1276 | struct ieee80211_hdr *hdr) | |
1277 | { | |
1278 | /* | |
1279 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1280 | * from AP because we know that the connection is working both ways | |
1281 | * at that time. But multicast frames (and hence also beacons) must | |
1282 | * be ignored here, because we need to trigger the timer during | |
1283 | * data idle periods for sending the periodical probe request to | |
1284 | * the AP. | |
1285 | */ | |
1286 | if (!is_multicast_ether_addr(hdr->addr1)) | |
1287 | mod_timer(&sdata->u.mgd.timer, | |
1288 | jiffies + IEEE80211_MONITORING_INTERVAL); | |
1289 | } | |
f0706e82 | 1290 | |
04de8381 KV |
1291 | void ieee80211_beacon_loss_work(struct work_struct *work) |
1292 | { | |
1293 | struct ieee80211_sub_if_data *sdata = | |
1294 | container_of(work, struct ieee80211_sub_if_data, | |
1295 | u.mgd.beacon_loss_work); | |
1296 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1297 | ||
34bfc411 JB |
1298 | /* |
1299 | * The driver has already reported this event and we have | |
1300 | * already sent a probe request. Maybe the AP died and the | |
1301 | * driver keeps reporting until we disassociate... We have | |
1302 | * to ignore that because otherwise we would continually | |
1303 | * reset the timer and never check whether we received a | |
1304 | * probe response! | |
1305 | */ | |
1306 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) | |
1307 | return; | |
1308 | ||
a860402d MB |
1309 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
1310 | if (net_ratelimit()) { | |
1311 | printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM " | |
1312 | "- sending probe request\n", sdata->dev->name, | |
1313 | sdata->u.mgd.bssid); | |
1314 | } | |
1315 | #endif | |
04de8381 KV |
1316 | |
1317 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; | |
4e751843 JB |
1318 | |
1319 | mutex_lock(&sdata->local->iflist_mtx); | |
1320 | ieee80211_recalc_ps(sdata->local, -1); | |
1321 | mutex_unlock(&sdata->local->iflist_mtx); | |
1322 | ||
04de8381 KV |
1323 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, |
1324 | ifmgd->ssid_len, NULL, 0); | |
1325 | ||
e0502de6 | 1326 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT); |
04de8381 KV |
1327 | } |
1328 | ||
1329 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) | |
1330 | { | |
1331 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1332 | ||
1333 | queue_work(sdata->local->hw.workqueue, | |
1334 | &sdata->u.mgd.beacon_loss_work); | |
1335 | } | |
1336 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
1337 | ||
46900298 | 1338 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1339 | { |
46900298 | 1340 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1341 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1342 | struct sta_info *sta; |
4e751843 | 1343 | unsigned long last_rx; |
15b7b062 | 1344 | bool disassoc = false; |
f0706e82 JB |
1345 | |
1346 | /* TODO: start monitoring current AP signal quality and number of | |
1347 | * missed beacons. Scan other channels every now and then and search | |
1348 | * for better APs. */ | |
1349 | /* TODO: remove expired BSSes */ | |
1350 | ||
46900298 | 1351 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 1352 | |
d0709a65 JB |
1353 | rcu_read_lock(); |
1354 | ||
46900298 | 1355 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 1356 | if (!sta) { |
0c68ae26 | 1357 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
46900298 | 1358 | sdata->dev->name, ifmgd->bssid); |
15b7b062 | 1359 | disassoc = true; |
4e751843 JB |
1360 | rcu_read_unlock(); |
1361 | goto out; | |
15b7b062 KV |
1362 | } |
1363 | ||
4e751843 JB |
1364 | last_rx = sta->last_rx; |
1365 | rcu_read_unlock(); | |
1366 | ||
15b7b062 | 1367 | if ((ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) && |
4e751843 | 1368 | time_after(jiffies, last_rx + IEEE80211_PROBE_WAIT)) { |
15b7b062 KV |
1369 | printk(KERN_DEBUG "%s: no probe response from AP %pM " |
1370 | "- disassociating\n", | |
1371 | sdata->dev->name, ifmgd->bssid); | |
1372 | disassoc = true; | |
1373 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; | |
4e751843 | 1374 | goto out; |
15b7b062 KV |
1375 | } |
1376 | ||
04de8381 KV |
1377 | /* |
1378 | * Beacon filtering is only enabled with power save and then the | |
1379 | * stack should not check for beacon loss. | |
1380 | */ | |
1381 | if (!((local->hw.flags & IEEE80211_HW_BEACON_FILTER) && | |
1382 | (local->hw.conf.flags & IEEE80211_CONF_PS)) && | |
1383 | time_after(jiffies, | |
15b7b062 | 1384 | ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) { |
a860402d MB |
1385 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
1386 | if (net_ratelimit()) { | |
1387 | printk(KERN_DEBUG "%s: beacon loss from AP %pM " | |
1388 | "- sending probe request\n", | |
1389 | sdata->dev->name, ifmgd->bssid); | |
1390 | } | |
1391 | #endif | |
15b7b062 | 1392 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; |
4e751843 JB |
1393 | mutex_lock(&local->iflist_mtx); |
1394 | ieee80211_recalc_ps(local, -1); | |
1395 | mutex_unlock(&local->iflist_mtx); | |
15b7b062 KV |
1396 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, |
1397 | ifmgd->ssid_len, NULL, 0); | |
4ef699fb | 1398 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT); |
4e751843 | 1399 | goto out; |
15b7b062 KV |
1400 | } |
1401 | ||
4e751843 | 1402 | if (time_after(jiffies, last_rx + IEEE80211_PROBE_IDLE_TIME)) { |
15b7b062 | 1403 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; |
4e751843 JB |
1404 | mutex_lock(&local->iflist_mtx); |
1405 | ieee80211_recalc_ps(local, -1); | |
1406 | mutex_unlock(&local->iflist_mtx); | |
15b7b062 KV |
1407 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, |
1408 | ifmgd->ssid_len, NULL, 0); | |
f0706e82 | 1409 | } |
d0709a65 | 1410 | |
4e751843 | 1411 | out: |
4ef699fb JB |
1412 | if (!disassoc) |
1413 | mod_timer(&ifmgd->timer, | |
1414 | jiffies + IEEE80211_MONITORING_INTERVAL); | |
4e751843 | 1415 | else |
46900298 | 1416 | ieee80211_set_disassoc(sdata, true, true, |
60f8b39c | 1417 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
f0706e82 JB |
1418 | } |
1419 | ||
1420 | ||
46900298 | 1421 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1422 | { |
46900298 JB |
1423 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
1424 | ||
f698d856 | 1425 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
46900298 | 1426 | ifmgd->flags |= IEEE80211_STA_AUTHENTICATED; |
636a5d36 JM |
1427 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
1428 | /* Wait for SME to request association */ | |
1429 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1430 | ieee80211_recalc_idle(sdata->local); |
636a5d36 JM |
1431 | } else |
1432 | ieee80211_associate(sdata); | |
f0706e82 JB |
1433 | } |
1434 | ||
1435 | ||
f698d856 | 1436 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1437 | struct ieee80211_mgmt *mgmt, |
1438 | size_t len) | |
1439 | { | |
1440 | u8 *pos; | |
1441 | struct ieee802_11_elems elems; | |
1442 | ||
f0706e82 | 1443 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1444 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1445 | if (!elems.challenge) |
f0706e82 | 1446 | return; |
46900298 JB |
1447 | ieee80211_send_auth(sdata, 3, sdata->u.mgd.auth_alg, |
1448 | elems.challenge - 2, elems.challenge_len + 2, | |
1449 | sdata->u.mgd.bssid, 1); | |
1450 | sdata->u.mgd.auth_transaction = 4; | |
fe3d2c3f JB |
1451 | } |
1452 | ||
f698d856 | 1453 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1454 | struct ieee80211_mgmt *mgmt, |
1455 | size_t len) | |
1456 | { | |
46900298 | 1457 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1458 | u16 auth_alg, auth_transaction, status_code; |
1459 | ||
46900298 | 1460 | if (ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE) |
f0706e82 | 1461 | return; |
f0706e82 | 1462 | |
f4ea83dd | 1463 | if (len < 24 + 6) |
f0706e82 | 1464 | return; |
f0706e82 | 1465 | |
46900298 | 1466 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1467 | return; |
f0706e82 | 1468 | |
46900298 | 1469 | if (memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1470 | return; |
f0706e82 JB |
1471 | |
1472 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1473 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1474 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1475 | ||
46900298 JB |
1476 | if (auth_alg != ifmgd->auth_alg || |
1477 | auth_transaction != ifmgd->auth_transaction) | |
f0706e82 | 1478 | return; |
f0706e82 JB |
1479 | |
1480 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1481 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1482 | u8 algs[3]; | |
1483 | const int num_algs = ARRAY_SIZE(algs); | |
1484 | int i, pos; | |
1485 | algs[0] = algs[1] = algs[2] = 0xff; | |
46900298 | 1486 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
f0706e82 | 1487 | algs[0] = WLAN_AUTH_OPEN; |
46900298 | 1488 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
f0706e82 | 1489 | algs[1] = WLAN_AUTH_SHARED_KEY; |
46900298 | 1490 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
f0706e82 | 1491 | algs[2] = WLAN_AUTH_LEAP; |
46900298 | 1492 | if (ifmgd->auth_alg == WLAN_AUTH_OPEN) |
f0706e82 | 1493 | pos = 0; |
46900298 | 1494 | else if (ifmgd->auth_alg == WLAN_AUTH_SHARED_KEY) |
f0706e82 JB |
1495 | pos = 1; |
1496 | else | |
1497 | pos = 2; | |
1498 | for (i = 0; i < num_algs; i++) { | |
1499 | pos++; | |
1500 | if (pos >= num_algs) | |
1501 | pos = 0; | |
46900298 | 1502 | if (algs[pos] == ifmgd->auth_alg || |
f0706e82 JB |
1503 | algs[pos] == 0xff) |
1504 | continue; | |
1505 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1506 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 | 1507 | continue; |
46900298 | 1508 | ifmgd->auth_alg = algs[pos]; |
f0706e82 JB |
1509 | break; |
1510 | } | |
1511 | } | |
1512 | return; | |
1513 | } | |
1514 | ||
46900298 | 1515 | switch (ifmgd->auth_alg) { |
f0706e82 JB |
1516 | case WLAN_AUTH_OPEN: |
1517 | case WLAN_AUTH_LEAP: | |
636a5d36 | 1518 | case WLAN_AUTH_FT: |
46900298 | 1519 | ieee80211_auth_completed(sdata); |
6039f6d2 | 1520 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1521 | break; |
1522 | case WLAN_AUTH_SHARED_KEY: | |
6039f6d2 | 1523 | if (ifmgd->auth_transaction == 4) { |
46900298 | 1524 | ieee80211_auth_completed(sdata); |
6039f6d2 JM |
1525 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
1526 | } else | |
46900298 | 1527 | ieee80211_auth_challenge(sdata, mgmt, len); |
f0706e82 JB |
1528 | break; |
1529 | } | |
1530 | } | |
1531 | ||
1532 | ||
f698d856 | 1533 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1534 | struct ieee80211_mgmt *mgmt, |
1535 | size_t len) | |
1536 | { | |
46900298 | 1537 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1538 | u16 reason_code; |
1539 | ||
f4ea83dd | 1540 | if (len < 24 + 2) |
f0706e82 | 1541 | return; |
f0706e82 | 1542 | |
46900298 | 1543 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1544 | return; |
f0706e82 JB |
1545 | |
1546 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1547 | ||
46900298 | 1548 | if (ifmgd->flags & IEEE80211_STA_AUTHENTICATED) |
97c8b013 ZY |
1549 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
1550 | sdata->dev->name, reason_code); | |
f0706e82 | 1551 | |
636a5d36 JM |
1552 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1553 | (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || | |
1554 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1555 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)) { | |
46900298 JB |
1556 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
1557 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1558 | IEEE80211_RETRY_AUTH_INTERVAL); |
1559 | } | |
1560 | ||
46900298 JB |
1561 | ieee80211_set_disassoc(sdata, true, false, 0); |
1562 | ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED; | |
53b46b84 | 1563 | cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1564 | } |
1565 | ||
1566 | ||
f698d856 | 1567 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1568 | struct ieee80211_mgmt *mgmt, |
1569 | size_t len) | |
1570 | { | |
46900298 | 1571 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1572 | u16 reason_code; |
1573 | ||
f4ea83dd | 1574 | if (len < 24 + 2) |
f0706e82 | 1575 | return; |
f0706e82 | 1576 | |
46900298 | 1577 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1578 | return; |
f0706e82 JB |
1579 | |
1580 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1581 | ||
46900298 | 1582 | if (ifmgd->flags & IEEE80211_STA_ASSOCIATED) |
97c8b013 ZY |
1583 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
1584 | sdata->dev->name, reason_code); | |
f0706e82 | 1585 | |
636a5d36 JM |
1586 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1587 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
46900298 JB |
1588 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
1589 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1590 | IEEE80211_RETRY_AUTH_INTERVAL); |
1591 | } | |
1592 | ||
46900298 | 1593 | ieee80211_set_disassoc(sdata, false, false, reason_code); |
53b46b84 | 1594 | cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1595 | } |
1596 | ||
1597 | ||
471b3efd | 1598 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1599 | struct ieee80211_mgmt *mgmt, |
1600 | size_t len, | |
1601 | int reassoc) | |
1602 | { | |
46900298 | 1603 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 1604 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1605 | struct ieee80211_supported_band *sband; |
f0706e82 | 1606 | struct sta_info *sta; |
881d948c | 1607 | u32 rates, basic_rates; |
f0706e82 JB |
1608 | u16 capab_info, status_code, aid; |
1609 | struct ieee802_11_elems elems; | |
bda3933a | 1610 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 | 1611 | u8 *pos; |
ae5eb026 | 1612 | u32 changed = 0; |
f0706e82 | 1613 | int i, j; |
ddf4ac53 | 1614 | bool have_higher_than_11mbit = false, newsta = false; |
ae5eb026 | 1615 | u16 ap_ht_cap_flags; |
f0706e82 JB |
1616 | |
1617 | /* AssocResp and ReassocResp have identical structure, so process both | |
1618 | * of them in this function. */ | |
1619 | ||
46900298 | 1620 | if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1621 | return; |
f0706e82 | 1622 | |
f4ea83dd | 1623 | if (len < 24 + 6) |
f0706e82 | 1624 | return; |
f0706e82 | 1625 | |
46900298 | 1626 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1627 | return; |
f0706e82 JB |
1628 | |
1629 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1630 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1631 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1632 | |
0c68ae26 | 1633 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
f0706e82 | 1634 | "status=%d aid=%d)\n", |
0c68ae26 | 1635 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
ddd68587 | 1636 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 | 1637 | |
63a5ab82 JM |
1638 | pos = mgmt->u.assoc_resp.variable; |
1639 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
1640 | ||
1641 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
f797eb7e JM |
1642 | elems.timeout_int && elems.timeout_int_len == 5 && |
1643 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
63a5ab82 | 1644 | u32 tu, ms; |
f797eb7e | 1645 | tu = get_unaligned_le32(elems.timeout_int + 1); |
63a5ab82 JM |
1646 | ms = tu * 1024 / 1000; |
1647 | printk(KERN_DEBUG "%s: AP rejected association temporarily; " | |
1648 | "comeback duration %u TU (%u ms)\n", | |
1649 | sdata->dev->name, tu, ms); | |
1650 | if (ms > IEEE80211_ASSOC_TIMEOUT) | |
46900298 | 1651 | mod_timer(&ifmgd->timer, |
63a5ab82 JM |
1652 | jiffies + msecs_to_jiffies(ms)); |
1653 | return; | |
1654 | } | |
1655 | ||
f0706e82 JB |
1656 | if (status_code != WLAN_STATUS_SUCCESS) { |
1657 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1658 | sdata->dev->name, status_code); |
8a69aa93 DD |
1659 | /* if this was a reassociation, ensure we try a "full" |
1660 | * association next time. This works around some broken APs | |
1661 | * which do not correctly reject reassociation requests. */ | |
46900298 | 1662 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
66174bbe JM |
1663 | cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); |
1664 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { | |
1665 | /* Wait for SME to decide what to do next */ | |
1666 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1667 | ieee80211_recalc_idle(local); |
66174bbe | 1668 | } |
f0706e82 JB |
1669 | return; |
1670 | } | |
1671 | ||
1dd84aa2 JB |
1672 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1673 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1674 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1675 | aid &= ~(BIT(15) | BIT(14)); |
1676 | ||
f0706e82 JB |
1677 | if (!elems.supp_rates) { |
1678 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1679 | sdata->dev->name); |
f0706e82 JB |
1680 | return; |
1681 | } | |
1682 | ||
f698d856 | 1683 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
46900298 JB |
1684 | ifmgd->aid = aid; |
1685 | ifmgd->ap_capab = capab_info; | |
f0706e82 | 1686 | |
46900298 JB |
1687 | kfree(ifmgd->assocresp_ies); |
1688 | ifmgd->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
1689 | ifmgd->assocresp_ies = kmalloc(ifmgd->assocresp_ies_len, GFP_KERNEL); | |
1690 | if (ifmgd->assocresp_ies) | |
1691 | memcpy(ifmgd->assocresp_ies, pos, ifmgd->assocresp_ies_len); | |
f0706e82 | 1692 | |
d0709a65 JB |
1693 | rcu_read_lock(); |
1694 | ||
f0706e82 | 1695 | /* Add STA entry for the AP */ |
46900298 | 1696 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 1697 | if (!sta) { |
ddf4ac53 | 1698 | newsta = true; |
d0709a65 | 1699 | |
46900298 | 1700 | sta = sta_info_alloc(sdata, ifmgd->bssid, GFP_ATOMIC); |
73651ee6 JB |
1701 | if (!sta) { |
1702 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1703 | " the AP\n", sdata->dev->name); |
d0709a65 | 1704 | rcu_read_unlock(); |
f0706e82 JB |
1705 | return; |
1706 | } | |
f709fc69 | 1707 | |
60f8b39c JB |
1708 | /* update new sta with its last rx activity */ |
1709 | sta->last_rx = jiffies; | |
f709fc69 | 1710 | } |
f709fc69 | 1711 | |
60f8b39c JB |
1712 | /* |
1713 | * FIXME: Do we really need to update the sta_info's information here? | |
1714 | * We already know about the AP (we found it in our list) so it | |
1715 | * should already be filled with the right info, no? | |
1716 | * As is stands, all this is racy because typically we assume | |
1717 | * the information that is filled in here (except flags) doesn't | |
1718 | * change while a STA structure is alive. As such, it should move | |
1719 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1720 | */ | |
f709fc69 | 1721 | |
3f77316c JM |
1722 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP); |
1723 | if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) | |
1724 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); | |
05e5e883 | 1725 | |
60f8b39c JB |
1726 | rates = 0; |
1727 | basic_rates = 0; | |
1728 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1729 | |
60f8b39c JB |
1730 | for (i = 0; i < elems.supp_rates_len; i++) { |
1731 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
d61272cb | 1732 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
f709fc69 | 1733 | |
60f8b39c JB |
1734 | if (rate > 110) |
1735 | have_higher_than_11mbit = true; | |
1736 | ||
1737 | for (j = 0; j < sband->n_bitrates; j++) { | |
d61272cb | 1738 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1739 | rates |= BIT(j); |
d61272cb TW |
1740 | if (is_basic) |
1741 | basic_rates |= BIT(j); | |
1742 | break; | |
1743 | } | |
f709fc69 | 1744 | } |
f709fc69 LCC |
1745 | } |
1746 | ||
60f8b39c JB |
1747 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1748 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
7e0986c1 | 1749 | bool is_basic = !!(elems.ext_supp_rates[i] & 0x80); |
f0706e82 | 1750 | |
60f8b39c JB |
1751 | if (rate > 110) |
1752 | have_higher_than_11mbit = true; | |
f0706e82 | 1753 | |
60f8b39c | 1754 | for (j = 0; j < sband->n_bitrates; j++) { |
d61272cb | 1755 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1756 | rates |= BIT(j); |
d61272cb TW |
1757 | if (is_basic) |
1758 | basic_rates |= BIT(j); | |
1759 | break; | |
1760 | } | |
60f8b39c | 1761 | } |
1ebebea8 | 1762 | } |
f0706e82 | 1763 | |
323ce79a | 1764 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
bda3933a | 1765 | sdata->vif.bss_conf.basic_rates = basic_rates; |
60f8b39c JB |
1766 | |
1767 | /* cf. IEEE 802.11 9.2.12 */ | |
1768 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1769 | have_higher_than_11mbit) | |
1770 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1771 | else | |
1772 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1773 | |
e65c2263 S |
1774 | /* If TKIP/WEP is used, no need to parse AP's HT capabilities */ |
1775 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 | 1776 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
d9fe60de | 1777 | elems.ht_cap_elem, &sta->sta.ht_cap); |
ae5eb026 JB |
1778 | |
1779 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
f0706e82 | 1780 | |
4b7679a5 | 1781 | rate_control_rate_init(sta); |
f0706e82 | 1782 | |
46900298 | 1783 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
5394af4d JM |
1784 | set_sta_flags(sta, WLAN_STA_MFP); |
1785 | ||
ddf4ac53 | 1786 | if (elems.wmm_param) |
60f8b39c | 1787 | set_sta_flags(sta, WLAN_STA_WME); |
ddf4ac53 JB |
1788 | |
1789 | if (newsta) { | |
1790 | int err = sta_info_insert(sta); | |
1791 | if (err) { | |
1792 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1793 | " the AP (error %d)\n", sdata->dev->name, err); | |
1794 | rcu_read_unlock(); | |
1795 | return; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | rcu_read_unlock(); | |
1800 | ||
1801 | if (elems.wmm_param) | |
46900298 | 1802 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
60f8b39c | 1803 | elems.wmm_param_len); |
aa837e1d JB |
1804 | else |
1805 | ieee80211_set_wmm_default(sdata); | |
f0706e82 | 1806 | |
ae5eb026 | 1807 | if (elems.ht_info_elem && elems.wmm_param && |
46900298 JB |
1808 | (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
1809 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 JB |
1810 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
1811 | ap_ht_cap_flags); | |
1812 | ||
60f8b39c JB |
1813 | /* set AID and assoc capability, |
1814 | * ieee80211_set_associated() will tell the driver */ | |
1815 | bss_conf->aid = aid; | |
1816 | bss_conf->assoc_capability = capab_info; | |
46900298 | 1817 | ieee80211_set_associated(sdata, changed); |
f0706e82 | 1818 | |
15b7b062 KV |
1819 | /* |
1820 | * initialise the time of last beacon to be the association time, | |
1821 | * otherwise beacon loss check will trigger immediately | |
1822 | */ | |
1823 | ifmgd->last_beacon = jiffies; | |
1824 | ||
46900298 | 1825 | ieee80211_associated(sdata); |
6039f6d2 | 1826 | cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1827 | } |
1828 | ||
1829 | ||
98c8fccf JB |
1830 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1831 | struct ieee80211_mgmt *mgmt, | |
1832 | size_t len, | |
1833 | struct ieee80211_rx_status *rx_status, | |
1834 | struct ieee802_11_elems *elems, | |
1835 | bool beacon) | |
1836 | { | |
1837 | struct ieee80211_local *local = sdata->local; | |
1838 | int freq; | |
c2b13452 | 1839 | struct ieee80211_bss *bss; |
98c8fccf | 1840 | struct ieee80211_channel *channel; |
98c8fccf JB |
1841 | |
1842 | if (elems->ds_params && elems->ds_params_len == 1) | |
1843 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1844 | else | |
1845 | freq = rx_status->freq; | |
1846 | ||
1847 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1848 | ||
1849 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1850 | return; | |
1851 | ||
98c8fccf | 1852 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
2a519311 | 1853 | channel, beacon); |
98c8fccf JB |
1854 | if (!bss) |
1855 | return; | |
1856 | ||
c481ec97 | 1857 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
46900298 | 1858 | (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) { |
c481ec97 S |
1859 | struct ieee80211_channel_sw_ie *sw_elem = |
1860 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; | |
cc32abd4 | 1861 | ieee80211_sta_process_chanswitch(sdata, sw_elem, bss); |
c481ec97 S |
1862 | } |
1863 | ||
3e122be0 | 1864 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
1865 | } |
1866 | ||
1867 | ||
f698d856 | 1868 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1869 | struct ieee80211_mgmt *mgmt, |
1870 | size_t len, | |
1871 | struct ieee80211_rx_status *rx_status) | |
1872 | { | |
15b7b062 | 1873 | struct ieee80211_if_managed *ifmgd; |
ae6a44e3 EK |
1874 | size_t baselen; |
1875 | struct ieee802_11_elems elems; | |
1876 | ||
15b7b062 KV |
1877 | ifmgd = &sdata->u.mgd; |
1878 | ||
8e7cdbb6 TW |
1879 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
1880 | return; /* ignore ProbeResp to foreign address */ | |
1881 | ||
ae6a44e3 EK |
1882 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1883 | if (baselen > len) | |
1884 | return; | |
1885 | ||
1886 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1887 | &elems); | |
1888 | ||
98c8fccf | 1889 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
1890 | |
1891 | /* direct probe may be part of the association flow */ | |
16cf438a | 1892 | if (ifmgd->state == IEEE80211_STA_MLME_DIRECT_PROBE) { |
9859b81e RR |
1893 | printk(KERN_DEBUG "%s direct probe responded\n", |
1894 | sdata->dev->name); | |
46900298 | 1895 | ieee80211_authenticate(sdata); |
9859b81e | 1896 | } |
15b7b062 | 1897 | |
4e751843 | 1898 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { |
15b7b062 | 1899 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
4e751843 JB |
1900 | mutex_lock(&sdata->local->iflist_mtx); |
1901 | ieee80211_recalc_ps(sdata->local, -1); | |
1902 | mutex_unlock(&sdata->local->iflist_mtx); | |
1903 | } | |
f0706e82 JB |
1904 | } |
1905 | ||
d91f36db JB |
1906 | /* |
1907 | * This is the canonical list of information elements we care about, | |
1908 | * the filter code also gives us all changes to the Microsoft OUI | |
1909 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
1910 | * | |
1911 | * We implement beacon filtering in software since that means we can | |
1912 | * avoid processing the frame here and in cfg80211, and userspace | |
1913 | * will not be able to tell whether the hardware supports it or not. | |
1914 | * | |
1915 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
1916 | * add items it requires. It also needs to be able to tell us to | |
1917 | * look out for other vendor IEs. | |
1918 | */ | |
1919 | static const u64 care_about_ies = | |
1d4df3a5 JB |
1920 | (1ULL << WLAN_EID_COUNTRY) | |
1921 | (1ULL << WLAN_EID_ERP_INFO) | | |
1922 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
1923 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
1924 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
1925 | (1ULL << WLAN_EID_HT_INFORMATION); | |
d91f36db | 1926 | |
f698d856 | 1927 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1928 | struct ieee80211_mgmt *mgmt, |
1929 | size_t len, | |
1930 | struct ieee80211_rx_status *rx_status) | |
1931 | { | |
d91f36db | 1932 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1933 | size_t baselen; |
1934 | struct ieee802_11_elems elems; | |
f698d856 | 1935 | struct ieee80211_local *local = sdata->local; |
471b3efd | 1936 | u32 changed = 0; |
d91f36db | 1937 | bool erp_valid, directed_tim = false; |
7a5158ef | 1938 | u8 erp_value = 0; |
d91f36db | 1939 | u32 ncrc; |
f0706e82 | 1940 | |
ae6a44e3 EK |
1941 | /* Process beacon from the current BSS */ |
1942 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1943 | if (baselen > len) | |
1944 | return; | |
1945 | ||
d91f36db | 1946 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
f0706e82 | 1947 | return; |
f0706e82 | 1948 | |
46900298 JB |
1949 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) || |
1950 | memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) | |
f0706e82 JB |
1951 | return; |
1952 | ||
92778180 JM |
1953 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { |
1954 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
1955 | if (net_ratelimit()) { | |
1956 | printk(KERN_DEBUG "%s: cancelling probereq poll due " | |
1957 | "to a received beacon\n", sdata->dev->name); | |
1958 | } | |
1959 | #endif | |
1960 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; | |
4e751843 JB |
1961 | mutex_lock(&local->iflist_mtx); |
1962 | ieee80211_recalc_ps(local, -1); | |
1963 | mutex_unlock(&local->iflist_mtx); | |
92778180 JM |
1964 | } |
1965 | ||
d91f36db JB |
1966 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
1967 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
1968 | len - baselen, &elems, | |
1969 | care_about_ies, ncrc); | |
1970 | ||
1971 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
e7ec86f5 JB |
1972 | directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len, |
1973 | ifmgd->aid); | |
d91f36db | 1974 | |
30196673 JM |
1975 | if (ncrc != ifmgd->beacon_crc) { |
1976 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, | |
1977 | true); | |
d91f36db | 1978 | |
30196673 JM |
1979 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
1980 | elems.wmm_param_len); | |
1981 | } | |
fe3fa827 | 1982 | |
25c9c875 | 1983 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
1fb3606b | 1984 | if (directed_tim) { |
572e0012 KV |
1985 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
1986 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1987 | ieee80211_hw_config(local, | |
1988 | IEEE80211_CONF_CHANGE_PS); | |
1989 | ieee80211_send_nullfunc(local, sdata, 0); | |
1990 | } else { | |
1991 | local->pspolling = true; | |
1992 | ||
1993 | /* | |
1994 | * Here is assumed that the driver will be | |
1995 | * able to send ps-poll frame and receive a | |
1996 | * response even though power save mode is | |
1997 | * enabled, but some drivers might require | |
1998 | * to disable power save here. This needs | |
1999 | * to be investigated. | |
2000 | */ | |
2001 | ieee80211_send_pspoll(local, sdata); | |
2002 | } | |
a97b77b9 VN |
2003 | } |
2004 | } | |
7a5158ef | 2005 | |
30196673 JM |
2006 | if (ncrc == ifmgd->beacon_crc) |
2007 | return; | |
2008 | ifmgd->beacon_crc = ncrc; | |
2009 | ||
7a5158ef JB |
2010 | if (elems.erp_info && elems.erp_info_len >= 1) { |
2011 | erp_valid = true; | |
2012 | erp_value = elems.erp_info[0]; | |
2013 | } else { | |
2014 | erp_valid = false; | |
50c4afb9 | 2015 | } |
7a5158ef JB |
2016 | changed |= ieee80211_handle_bss_capability(sdata, |
2017 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
2018 | erp_valid, erp_value); | |
f0706e82 | 2019 | |
d3c990fb | 2020 | |
53d6f81c | 2021 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
46900298 | 2022 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) { |
ae5eb026 JB |
2023 | struct sta_info *sta; |
2024 | struct ieee80211_supported_band *sband; | |
2025 | u16 ap_ht_cap_flags; | |
2026 | ||
2027 | rcu_read_lock(); | |
2028 | ||
46900298 | 2029 | sta = sta_info_get(local, ifmgd->bssid); |
ae5eb026 JB |
2030 | if (!sta) { |
2031 | rcu_read_unlock(); | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2036 | ||
2037 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, | |
2038 | elems.ht_cap_elem, &sta->sta.ht_cap); | |
2039 | ||
2040 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
2041 | ||
2042 | rcu_read_unlock(); | |
2043 | ||
2044 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, | |
2045 | ap_ht_cap_flags); | |
d3c990fb RR |
2046 | } |
2047 | ||
3f2355cb LR |
2048 | if (elems.country_elem) { |
2049 | /* Note we are only reviewing this on beacons | |
2050 | * for the BSSID we are associated to */ | |
2051 | regulatory_hint_11d(local->hw.wiphy, | |
2052 | elems.country_elem, elems.country_elem_len); | |
a8302de9 VT |
2053 | |
2054 | /* TODO: IBSS also needs this */ | |
2055 | if (elems.pwr_constr_elem) | |
2056 | ieee80211_handle_pwr_constr(sdata, | |
2057 | le16_to_cpu(mgmt->u.probe_resp.capab_info), | |
2058 | elems.pwr_constr_elem, | |
2059 | elems.pwr_constr_elem_len); | |
3f2355cb LR |
2060 | } |
2061 | ||
471b3efd | 2062 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2063 | } |
2064 | ||
46900298 JB |
2065 | ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, |
2066 | struct sk_buff *skb, | |
2067 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2068 | { |
f698d856 | 2069 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2070 | struct ieee80211_mgmt *mgmt; |
2071 | u16 fc; | |
2072 | ||
2073 | if (skb->len < 24) | |
46900298 | 2074 | return RX_DROP_MONITOR; |
f0706e82 JB |
2075 | |
2076 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2077 | fc = le16_to_cpu(mgmt->frame_control); | |
2078 | ||
2079 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2080 | case IEEE80211_STYPE_PROBE_REQ: | |
2081 | case IEEE80211_STYPE_PROBE_RESP: | |
2082 | case IEEE80211_STYPE_BEACON: | |
2083 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); | |
2084 | case IEEE80211_STYPE_AUTH: | |
2085 | case IEEE80211_STYPE_ASSOC_RESP: | |
2086 | case IEEE80211_STYPE_REASSOC_RESP: | |
2087 | case IEEE80211_STYPE_DEAUTH: | |
2088 | case IEEE80211_STYPE_DISASSOC: | |
46900298 JB |
2089 | skb_queue_tail(&sdata->u.mgd.skb_queue, skb); |
2090 | queue_work(local->hw.workqueue, &sdata->u.mgd.work); | |
2091 | return RX_QUEUED; | |
f0706e82 JB |
2092 | } |
2093 | ||
46900298 | 2094 | return RX_DROP_MONITOR; |
f0706e82 JB |
2095 | } |
2096 | ||
f698d856 | 2097 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2098 | struct sk_buff *skb) |
2099 | { | |
2100 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
2101 | struct ieee80211_mgmt *mgmt; |
2102 | u16 fc; | |
2103 | ||
f0706e82 JB |
2104 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
2105 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2106 | fc = le16_to_cpu(mgmt->frame_control); | |
2107 | ||
46900298 JB |
2108 | switch (fc & IEEE80211_FCTL_STYPE) { |
2109 | case IEEE80211_STYPE_PROBE_RESP: | |
2110 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, | |
2111 | rx_status); | |
2112 | break; | |
2113 | case IEEE80211_STYPE_BEACON: | |
2114 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, | |
2115 | rx_status); | |
2116 | break; | |
2117 | case IEEE80211_STYPE_AUTH: | |
2118 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); | |
2119 | break; | |
2120 | case IEEE80211_STYPE_ASSOC_RESP: | |
2121 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 0); | |
2122 | break; | |
2123 | case IEEE80211_STYPE_REASSOC_RESP: | |
2124 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 1); | |
2125 | break; | |
2126 | case IEEE80211_STYPE_DEAUTH: | |
2127 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); | |
2128 | break; | |
2129 | case IEEE80211_STYPE_DISASSOC: | |
2130 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
2131 | break; | |
f0706e82 JB |
2132 | } |
2133 | ||
2134 | kfree_skb(skb); | |
2135 | } | |
2136 | ||
9c6bd790 | 2137 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 2138 | { |
60f8b39c JB |
2139 | struct ieee80211_sub_if_data *sdata = |
2140 | (struct ieee80211_sub_if_data *) data; | |
46900298 | 2141 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 2142 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2143 | |
5bb644a0 JB |
2144 | if (local->quiescing) { |
2145 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
2146 | return; | |
2147 | } | |
2148 | ||
46900298 JB |
2149 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
2150 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
2151 | } |
2152 | ||
46900298 | 2153 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2154 | { |
46900298 | 2155 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 2156 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2157 | |
24487981 JB |
2158 | /* Reset own TSF to allow time synchronization work. */ |
2159 | drv_reset_tsf(local); | |
f0706e82 | 2160 | |
46900298 | 2161 | ifmgd->wmm_last_param_set = -1; /* allow any WMM update */ |
f0706e82 JB |
2162 | |
2163 | ||
46900298 JB |
2164 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
2165 | ifmgd->auth_alg = WLAN_AUTH_OPEN; | |
2166 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2167 | ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2168 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2169 | ifmgd->auth_alg = WLAN_AUTH_LEAP; | |
636a5d36 JM |
2170 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_FT) |
2171 | ifmgd->auth_alg = WLAN_AUTH_FT; | |
f0706e82 | 2172 | else |
46900298 JB |
2173 | ifmgd->auth_alg = WLAN_AUTH_OPEN; |
2174 | ifmgd->auth_transaction = -1; | |
2175 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; | |
2176 | ifmgd->assoc_scan_tries = 0; | |
2177 | ifmgd->direct_probe_tries = 0; | |
2178 | ifmgd->auth_tries = 0; | |
2179 | ifmgd->assoc_tries = 0; | |
24e64622 | 2180 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 2181 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
2182 | } |
2183 | ||
46900298 | 2184 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2185 | { |
46900298 | 2186 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 2187 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 2188 | struct ieee80211_bss *bss; |
46900298 JB |
2189 | u8 *bssid = ifmgd->bssid, *ssid = ifmgd->ssid; |
2190 | u8 ssid_len = ifmgd->ssid_len; | |
00d3f14c JB |
2191 | u16 capa_mask = WLAN_CAPABILITY_ESS; |
2192 | u16 capa_val = WLAN_CAPABILITY_ESS; | |
2193 | struct ieee80211_channel *chan = local->oper_channel; | |
2194 | ||
636a5d36 JM |
2195 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
2196 | ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
00d3f14c JB |
2197 | IEEE80211_STA_AUTO_BSSID_SEL | |
2198 | IEEE80211_STA_AUTO_CHANNEL_SEL)) { | |
2199 | capa_mask |= WLAN_CAPABILITY_PRIVACY; | |
2200 | if (sdata->default_key) | |
2201 | capa_val |= WLAN_CAPABILITY_PRIVACY; | |
f0706e82 | 2202 | } |
9d139c81 | 2203 | |
46900298 | 2204 | if (ifmgd->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
00d3f14c JB |
2205 | chan = NULL; |
2206 | ||
46900298 | 2207 | if (ifmgd->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
00d3f14c JB |
2208 | bssid = NULL; |
2209 | ||
46900298 | 2210 | if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) { |
00d3f14c JB |
2211 | ssid = NULL; |
2212 | ssid_len = 0; | |
2213 | } | |
2214 | ||
2215 | bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, | |
2216 | bssid, ssid, ssid_len, | |
2217 | capa_mask, capa_val); | |
2218 | ||
2219 | if (bss) { | |
7e9debe9 JB |
2220 | local->oper_channel = bss->cbss.channel; |
2221 | local->oper_channel_type = NL80211_CHAN_NO_HT; | |
2222 | ieee80211_hw_config(local, 0); | |
2223 | ||
46900298 | 2224 | if (!(ifmgd->flags & IEEE80211_STA_SSID_SET)) |
00d3f14c JB |
2225 | ieee80211_sta_set_ssid(sdata, bss->ssid, |
2226 | bss->ssid_len); | |
2227 | ieee80211_sta_set_bssid(sdata, bss->cbss.bssid); | |
2228 | ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len, | |
2229 | bss->supp_rates); | |
46900298 JB |
2230 | if (sdata->u.mgd.mfp == IEEE80211_MFP_REQUIRED) |
2231 | sdata->u.mgd.flags |= IEEE80211_STA_MFP_ENABLED; | |
fdfacf0a | 2232 | else |
46900298 | 2233 | sdata->u.mgd.flags &= ~IEEE80211_STA_MFP_ENABLED; |
f0706e82 | 2234 | |
9c6bd790 JB |
2235 | /* Send out direct probe if no probe resp was received or |
2236 | * the one we have is outdated | |
2237 | */ | |
00d3f14c JB |
2238 | if (!bss->last_probe_resp || |
2239 | time_after(jiffies, bss->last_probe_resp | |
9c6bd790 | 2240 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
46900298 | 2241 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
9c6bd790 | 2242 | else |
46900298 | 2243 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
f0706e82 | 2244 | |
00d3f14c | 2245 | ieee80211_rx_bss_put(local, bss); |
46900298 | 2246 | ieee80211_sta_reset_auth(sdata); |
9c6bd790 JB |
2247 | return 0; |
2248 | } else { | |
46900298 | 2249 | if (ifmgd->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
f3b85252 | 2250 | |
46900298 | 2251 | ifmgd->assoc_scan_tries++; |
af88b907 | 2252 | |
f3b85252 JB |
2253 | ieee80211_request_internal_scan(sdata, ifmgd->ssid, |
2254 | ssid_len); | |
af88b907 | 2255 | |
46900298 JB |
2256 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
2257 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
e374055a | 2258 | } else { |
46900298 JB |
2259 | ifmgd->assoc_scan_tries = 0; |
2260 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 2261 | ieee80211_recalc_idle(local); |
e374055a | 2262 | } |
9c6bd790 JB |
2263 | } |
2264 | return -1; | |
2265 | } | |
2266 | ||
2267 | ||
2268 | static void ieee80211_sta_work(struct work_struct *work) | |
2269 | { | |
2270 | struct ieee80211_sub_if_data *sdata = | |
46900298 | 2271 | container_of(work, struct ieee80211_sub_if_data, u.mgd.work); |
9c6bd790 | 2272 | struct ieee80211_local *local = sdata->local; |
46900298 | 2273 | struct ieee80211_if_managed *ifmgd; |
9c6bd790 JB |
2274 | struct sk_buff *skb; |
2275 | ||
2276 | if (!netif_running(sdata->dev)) | |
2277 | return; | |
2278 | ||
c2b13452 | 2279 | if (local->sw_scanning || local->hw_scanning) |
9c6bd790 JB |
2280 | return; |
2281 | ||
46900298 | 2282 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 2283 | return; |
5bb644a0 JB |
2284 | |
2285 | /* | |
2286 | * Nothing should have been stuffed into the workqueue during | |
2287 | * the suspend->resume cycle. If this WARN is seen then there | |
2288 | * is a bug with either the driver suspend or something in | |
2289 | * mac80211 stuffing into the workqueue which we haven't yet | |
2290 | * cleared during mac80211's suspend cycle. | |
2291 | */ | |
2292 | if (WARN_ON(local->suspended)) | |
2293 | return; | |
2294 | ||
46900298 | 2295 | ifmgd = &sdata->u.mgd; |
f0706e82 | 2296 | |
46900298 | 2297 | while ((skb = skb_dequeue(&ifmgd->skb_queue))) |
9c6bd790 JB |
2298 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
2299 | ||
46900298 JB |
2300 | if (ifmgd->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
2301 | ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
2302 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE && | |
2303 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) { | |
f3b85252 JB |
2304 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
2305 | round_jiffies_relative(0)); | |
9c6bd790 | 2306 | return; |
f0706e82 JB |
2307 | } |
2308 | ||
46900298 JB |
2309 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request)) { |
2310 | if (ieee80211_sta_config_auth(sdata)) | |
9c6bd790 | 2311 | return; |
46900298 JB |
2312 | clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
2313 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request)) | |
9c6bd790 | 2314 | return; |
d6f2da5b | 2315 | |
5cff20e6 JB |
2316 | ieee80211_recalc_idle(local); |
2317 | ||
46900298 | 2318 | switch (ifmgd->state) { |
9c6bd790 JB |
2319 | case IEEE80211_STA_MLME_DISABLED: |
2320 | break; | |
2321 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
46900298 | 2322 | ieee80211_direct_probe(sdata); |
9c6bd790 JB |
2323 | break; |
2324 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
46900298 | 2325 | ieee80211_authenticate(sdata); |
9c6bd790 JB |
2326 | break; |
2327 | case IEEE80211_STA_MLME_ASSOCIATE: | |
46900298 | 2328 | ieee80211_associate(sdata); |
9c6bd790 JB |
2329 | break; |
2330 | case IEEE80211_STA_MLME_ASSOCIATED: | |
46900298 | 2331 | ieee80211_associated(sdata); |
9c6bd790 JB |
2332 | break; |
2333 | default: | |
2334 | WARN_ON(1); | |
2335 | break; | |
2336 | } | |
2337 | ||
46900298 | 2338 | if (ieee80211_privacy_mismatch(sdata)) { |
9c6bd790 JB |
2339 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
2340 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
2341 | ||
46900298 | 2342 | ieee80211_set_disassoc(sdata, false, true, |
9c6bd790 JB |
2343 | WLAN_REASON_UNSPECIFIED); |
2344 | } | |
f0706e82 JB |
2345 | } |
2346 | ||
9c6bd790 JB |
2347 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
2348 | { | |
ad935687 KV |
2349 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
2350 | /* | |
2351 | * Need to update last_beacon to avoid beacon loss | |
2352 | * test to trigger. | |
2353 | */ | |
2354 | sdata->u.mgd.last_beacon = jiffies; | |
2355 | ||
2356 | ||
9c6bd790 | 2357 | queue_work(sdata->local->hw.workqueue, |
46900298 | 2358 | &sdata->u.mgd.work); |
ad935687 | 2359 | } |
9c6bd790 | 2360 | } |
f0706e82 | 2361 | |
5bb644a0 JB |
2362 | #ifdef CONFIG_PM |
2363 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) | |
2364 | { | |
2365 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2366 | ||
2367 | /* | |
2368 | * we need to use atomic bitops for the running bits | |
2369 | * only because both timers might fire at the same | |
2370 | * time -- the code here is properly synchronised. | |
2371 | */ | |
2372 | ||
2373 | cancel_work_sync(&ifmgd->work); | |
2374 | cancel_work_sync(&ifmgd->beacon_loss_work); | |
2375 | if (del_timer_sync(&ifmgd->timer)) | |
2376 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
2377 | ||
2378 | cancel_work_sync(&ifmgd->chswitch_work); | |
2379 | if (del_timer_sync(&ifmgd->chswitch_timer)) | |
2380 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
2381 | } | |
2382 | ||
2383 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
2384 | { | |
2385 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2386 | ||
2387 | if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) | |
2388 | add_timer(&ifmgd->timer); | |
2389 | if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) | |
2390 | add_timer(&ifmgd->chswitch_timer); | |
2391 | } | |
2392 | #endif | |
2393 | ||
9c6bd790 JB |
2394 | /* interface setup */ |
2395 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 2396 | { |
46900298 | 2397 | struct ieee80211_if_managed *ifmgd; |
bbbdff9e | 2398 | u32 hw_flags; |
988c0f72 | 2399 | |
46900298 JB |
2400 | ifmgd = &sdata->u.mgd; |
2401 | INIT_WORK(&ifmgd->work, ieee80211_sta_work); | |
2402 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); | |
04de8381 | 2403 | INIT_WORK(&ifmgd->beacon_loss_work, ieee80211_beacon_loss_work); |
46900298 | 2404 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 2405 | (unsigned long) sdata); |
46900298 | 2406 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 2407 | (unsigned long) sdata); |
46900298 | 2408 | skb_queue_head_init(&ifmgd->skb_queue); |
9c6bd790 | 2409 | |
46900298 JB |
2410 | ifmgd->capab = WLAN_CAPABILITY_ESS; |
2411 | ifmgd->auth_algs = IEEE80211_AUTH_ALG_OPEN | | |
9c6bd790 | 2412 | IEEE80211_AUTH_ALG_SHARED_KEY; |
46900298 | 2413 | ifmgd->flags |= IEEE80211_STA_CREATE_IBSS | |
9c6bd790 JB |
2414 | IEEE80211_STA_AUTO_BSSID_SEL | |
2415 | IEEE80211_STA_AUTO_CHANNEL_SEL; | |
176be728 | 2416 | if (sdata->local->hw.queues >= 4) |
46900298 | 2417 | ifmgd->flags |= IEEE80211_STA_WMM_ENABLED; |
bbbdff9e JB |
2418 | |
2419 | hw_flags = sdata->local->hw.flags; | |
2420 | ||
2421 | if (hw_flags & IEEE80211_HW_SUPPORTS_PS) { | |
2422 | ifmgd->powersave = CONFIG_MAC80211_DEFAULT_PS_VALUE; | |
2423 | sdata->local->hw.conf.dynamic_ps_timeout = 500; | |
2424 | } | |
f0706e82 JB |
2425 | } |
2426 | ||
9c6bd790 | 2427 | /* configuration hooks */ |
46900298 | 2428 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) |
60f8b39c | 2429 | { |
46900298 | 2430 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 2431 | struct ieee80211_local *local = sdata->local; |
60f8b39c | 2432 | |
46900298 | 2433 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 2434 | return; |
60f8b39c | 2435 | |
46900298 | 2436 | if ((ifmgd->flags & (IEEE80211_STA_BSSID_SET | |
9c6bd790 | 2437 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
46900298 | 2438 | (ifmgd->flags & (IEEE80211_STA_SSID_SET | |
9c6bd790 | 2439 | IEEE80211_STA_AUTO_SSID_SEL))) { |
60f8b39c | 2440 | |
46900298 JB |
2441 | if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) |
2442 | ieee80211_set_disassoc(sdata, true, true, | |
9c6bd790 | 2443 | WLAN_REASON_DEAUTH_LEAVING); |
60f8b39c | 2444 | |
68f2d026 JM |
2445 | if (ifmgd->ssid_len == 0) { |
2446 | /* | |
2447 | * Only allow association to be started if a valid SSID | |
2448 | * is configured. | |
2449 | */ | |
2450 | return; | |
2451 | } | |
2452 | ||
636a5d36 JM |
2453 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) || |
2454 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) | |
2455 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
2456 | else if (ifmgd->flags & IEEE80211_STA_EXT_SME) | |
2457 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); | |
46900298 | 2458 | queue_work(local->hw.workqueue, &ifmgd->work); |
9c6bd790 JB |
2459 | } |
2460 | } | |
60f8b39c | 2461 | |
79f6440c AF |
2462 | int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata) |
2463 | { | |
2464 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2465 | ||
79f6440c AF |
2466 | if (ifmgd->ssid_len) |
2467 | ifmgd->flags |= IEEE80211_STA_SSID_SET; | |
2468 | else | |
2469 | ifmgd->flags &= ~IEEE80211_STA_SSID_SET; | |
2470 | ||
2471 | return 0; | |
2472 | } | |
2473 | ||
9c6bd790 JB |
2474 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
2475 | { | |
46900298 | 2476 | struct ieee80211_if_managed *ifmgd; |
60f8b39c | 2477 | |
9c6bd790 JB |
2478 | if (len > IEEE80211_MAX_SSID_LEN) |
2479 | return -EINVAL; | |
2480 | ||
46900298 | 2481 | ifmgd = &sdata->u.mgd; |
9c6bd790 | 2482 | |
46900298 | 2483 | if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) { |
1fa6f4af JB |
2484 | if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) |
2485 | ieee80211_set_disassoc(sdata, true, true, | |
2486 | WLAN_REASON_DEAUTH_LEAVING); | |
2487 | ||
a299542e JM |
2488 | /* |
2489 | * Do not use reassociation if SSID is changed (different ESS). | |
2490 | */ | |
2491 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
46900298 JB |
2492 | memset(ifmgd->ssid, 0, sizeof(ifmgd->ssid)); |
2493 | memcpy(ifmgd->ssid, ssid, len); | |
2494 | ifmgd->ssid_len = len; | |
60f8b39c | 2495 | } |
60f8b39c | 2496 | |
79f6440c | 2497 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
2498 | } |
2499 | ||
2500 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) | |
2501 | { | |
46900298 JB |
2502 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2503 | memcpy(ssid, ifmgd->ssid, ifmgd->ssid_len); | |
2504 | *len = ifmgd->ssid_len; | |
9c6bd790 JB |
2505 | return 0; |
2506 | } | |
2507 | ||
2508 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) | |
2509 | { | |
46900298 | 2510 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 2511 | |
1fa6f4af JB |
2512 | if (compare_ether_addr(bssid, ifmgd->bssid) != 0 && |
2513 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) | |
2514 | ieee80211_set_disassoc(sdata, true, true, | |
2515 | WLAN_REASON_DEAUTH_LEAVING); | |
2516 | ||
dfe67012 | 2517 | if (is_valid_ether_addr(bssid)) { |
46900298 JB |
2518 | memcpy(ifmgd->bssid, bssid, ETH_ALEN); |
2519 | ifmgd->flags |= IEEE80211_STA_BSSID_SET; | |
dfe67012 | 2520 | } else { |
46900298 JB |
2521 | memset(ifmgd->bssid, 0, ETH_ALEN); |
2522 | ifmgd->flags &= ~IEEE80211_STA_BSSID_SET; | |
dfe67012 AF |
2523 | } |
2524 | ||
79f6440c | 2525 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
2526 | } |
2527 | ||
636a5d36 JM |
2528 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, |
2529 | const char *ie, size_t len) | |
9c6bd790 | 2530 | { |
46900298 | 2531 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 2532 | |
175427ce JB |
2533 | if (len == 0 && ifmgd->extra_ie_len == 0) |
2534 | return -EALREADY; | |
2535 | ||
2536 | if (len == ifmgd->extra_ie_len && ifmgd->extra_ie && | |
2537 | memcmp(ifmgd->extra_ie, ie, len) == 0) | |
2538 | return -EALREADY; | |
2539 | ||
46900298 | 2540 | kfree(ifmgd->extra_ie); |
9c6bd790 | 2541 | if (len == 0) { |
46900298 JB |
2542 | ifmgd->extra_ie = NULL; |
2543 | ifmgd->extra_ie_len = 0; | |
60f8b39c | 2544 | return 0; |
60f8b39c | 2545 | } |
46900298 JB |
2546 | ifmgd->extra_ie = kmalloc(len, GFP_KERNEL); |
2547 | if (!ifmgd->extra_ie) { | |
2548 | ifmgd->extra_ie_len = 0; | |
9c6bd790 JB |
2549 | return -ENOMEM; |
2550 | } | |
46900298 JB |
2551 | memcpy(ifmgd->extra_ie, ie, len); |
2552 | ifmgd->extra_ie_len = len; | |
9c6bd790 | 2553 | return 0; |
60f8b39c JB |
2554 | } |
2555 | ||
f698d856 | 2556 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2557 | { |
f4ea83dd | 2558 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 2559 | sdata->dev->name, reason); |
f0706e82 | 2560 | |
46900298 | 2561 | ieee80211_set_disassoc(sdata, true, true, reason); |
f0706e82 JB |
2562 | return 0; |
2563 | } | |
2564 | ||
f698d856 | 2565 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2566 | { |
46900298 | 2567 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 2568 | |
f4ea83dd | 2569 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 2570 | sdata->dev->name, reason); |
f0706e82 | 2571 | |
46900298 JB |
2572 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED)) |
2573 | return -ENOLINK; | |
f0706e82 | 2574 | |
46900298 | 2575 | ieee80211_set_disassoc(sdata, false, true, reason); |
f0706e82 JB |
2576 | return 0; |
2577 | } | |
84363e6e | 2578 | |
9c6bd790 JB |
2579 | /* scan finished notification */ |
2580 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
2581 | { | |
2582 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
9c6bd790 JB |
2583 | |
2584 | /* Restart STA timers */ | |
2585 | rcu_read_lock(); | |
2586 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
2587 | ieee80211_restart_sta_timer(sdata); | |
2588 | rcu_read_unlock(); | |
2589 | } | |
10f644a4 JB |
2590 | |
2591 | int ieee80211_max_network_latency(struct notifier_block *nb, | |
2592 | unsigned long data, void *dummy) | |
2593 | { | |
2594 | s32 latency_usec = (s32) data; | |
2595 | struct ieee80211_local *local = | |
2596 | container_of(nb, struct ieee80211_local, | |
2597 | network_latency_notifier); | |
2598 | ||
2599 | mutex_lock(&local->iflist_mtx); | |
2600 | ieee80211_recalc_ps(local, latency_usec); | |
2601 | mutex_unlock(&local->iflist_mtx); | |
2602 | ||
2603 | return 0; | |
2604 | } |