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f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
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> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/if_arp.h> | |
19 | #include <linux/wireless.h> | |
20 | #include <linux/random.h> | |
21 | #include <linux/etherdevice.h> | |
d0709a65 | 22 | #include <linux/rtnetlink.h> |
f0706e82 | 23 | #include <net/iw_handler.h> |
f0706e82 | 24 | #include <net/mac80211.h> |
60f8b39c | 25 | |
f0706e82 | 26 | #include "ieee80211_i.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f709fc69 | 29 | #include "mesh.h" |
f0706e82 | 30 | |
6042a3e3 | 31 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
32 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
33 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
34 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
35 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
36 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 37 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
38 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
39 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
40 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
41 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 42 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 | 43 | |
f0706e82 JB |
44 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
45 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 46 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
47 | |
48 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
49 | ||
50 | ||
5484e237 JB |
51 | /* utils */ |
52 | static int ecw2cw(int ecw) | |
60f8b39c | 53 | { |
5484e237 | 54 | return (1 << ecw) - 1; |
60f8b39c JB |
55 | } |
56 | ||
57 | static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie) | |
43ac2ca3 JM |
58 | { |
59 | u8 *end, *pos; | |
60 | ||
61 | pos = bss->ies; | |
62 | if (pos == NULL) | |
63 | return NULL; | |
64 | end = pos + bss->ies_len; | |
65 | ||
66 | while (pos + 1 < end) { | |
67 | if (pos + 2 + pos[1] > end) | |
68 | break; | |
69 | if (pos[0] == ie) | |
70 | return pos; | |
71 | pos += 2 + pos[1]; | |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
9ac19a90 JB |
77 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
78 | struct ieee80211_supported_band *sband, | |
79 | u64 *rates) | |
80 | { | |
81 | int i, j, count; | |
82 | *rates = 0; | |
83 | count = 0; | |
84 | for (i = 0; i < bss->supp_rates_len; i++) { | |
85 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
86 | ||
87 | for (j = 0; j < sband->n_bitrates; j++) | |
88 | if (sband->bitrates[j].bitrate == rate) { | |
89 | *rates |= BIT(j); | |
90 | count++; | |
91 | break; | |
92 | } | |
93 | } | |
94 | ||
95 | return count; | |
96 | } | |
97 | ||
60f8b39c JB |
98 | /* frame sending functions */ |
99 | void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, | |
100 | int encrypt) | |
101 | { | |
102 | skb->dev = sdata->local->mdev; | |
103 | skb_set_mac_header(skb, 0); | |
104 | skb_set_network_header(skb, 0); | |
105 | skb_set_transport_header(skb, 0); | |
e2839d8f | 106 | |
60f8b39c JB |
107 | skb->iif = sdata->dev->ifindex; |
108 | skb->do_not_encrypt = !encrypt; | |
109 | ||
110 | dev_queue_xmit(skb); | |
111 | } | |
112 | ||
113 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
114 | struct ieee80211_if_sta *ifsta, | |
115 | int transaction, u8 *extra, size_t extra_len, | |
116 | int encrypt) | |
117 | { | |
118 | struct ieee80211_local *local = sdata->local; | |
119 | struct sk_buff *skb; | |
120 | struct ieee80211_mgmt *mgmt; | |
121 | ||
122 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
123 | sizeof(*mgmt) + 6 + extra_len); | |
124 | if (!skb) { | |
125 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
126 | "frame\n", sdata->dev->name); | |
127 | return; | |
128 | } | |
129 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
130 | ||
131 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
132 | memset(mgmt, 0, 24 + 6); | |
133 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
134 | IEEE80211_STYPE_AUTH); | |
135 | if (encrypt) | |
136 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
137 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
138 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
139 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
140 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
141 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
142 | ifsta->auth_transaction = transaction + 1; | |
143 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
144 | if (extra) | |
145 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
146 | ||
147 | ieee80211_sta_tx(sdata, skb, encrypt); | |
148 | } | |
149 | ||
0a51b27e JB |
150 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
151 | u8 *ssid, size_t ssid_len) | |
60f8b39c JB |
152 | { |
153 | struct ieee80211_local *local = sdata->local; | |
154 | struct ieee80211_supported_band *sband; | |
155 | struct sk_buff *skb; | |
156 | struct ieee80211_mgmt *mgmt; | |
157 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
158 | int i; | |
159 | ||
160 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
161 | if (!skb) { | |
162 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
163 | "request\n", sdata->dev->name); | |
164 | return; | |
165 | } | |
166 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
167 | ||
168 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
169 | memset(mgmt, 0, 24); | |
170 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
171 | IEEE80211_STYPE_PROBE_REQ); | |
172 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
173 | if (dst) { | |
174 | memcpy(mgmt->da, dst, ETH_ALEN); | |
175 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
176 | } else { | |
177 | memset(mgmt->da, 0xff, ETH_ALEN); | |
178 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
179 | } | |
180 | pos = skb_put(skb, 2 + ssid_len); | |
181 | *pos++ = WLAN_EID_SSID; | |
182 | *pos++ = ssid_len; | |
183 | memcpy(pos, ssid, ssid_len); | |
184 | ||
185 | supp_rates = skb_put(skb, 2); | |
186 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
187 | supp_rates[1] = 0; | |
188 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
189 | ||
190 | for (i = 0; i < sband->n_bitrates; i++) { | |
191 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
192 | if (esupp_rates) { | |
193 | pos = skb_put(skb, 1); | |
194 | esupp_rates[1]++; | |
195 | } else if (supp_rates[1] == 8) { | |
196 | esupp_rates = skb_put(skb, 3); | |
197 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
198 | esupp_rates[1] = 1; | |
199 | pos = &esupp_rates[2]; | |
200 | } else { | |
201 | pos = skb_put(skb, 1); | |
202 | supp_rates[1]++; | |
203 | } | |
204 | *pos = rate->bitrate / 5; | |
205 | } | |
206 | ||
207 | ieee80211_sta_tx(sdata, skb, 0); | |
208 | } | |
209 | ||
9ac19a90 JB |
210 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
211 | struct ieee80211_if_sta *ifsta) | |
212 | { | |
213 | struct ieee80211_local *local = sdata->local; | |
214 | struct sk_buff *skb; | |
215 | struct ieee80211_mgmt *mgmt; | |
216 | u8 *pos, *ies, *ht_add_ie; | |
217 | int i, len, count, rates_len, supp_rates_len; | |
218 | u16 capab; | |
219 | struct ieee80211_sta_bss *bss; | |
220 | int wmm = 0; | |
221 | struct ieee80211_supported_band *sband; | |
222 | u64 rates = 0; | |
223 | ||
224 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
225 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
226 | ifsta->ssid_len); | |
227 | if (!skb) { | |
228 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
229 | "frame\n", sdata->dev->name); | |
230 | return; | |
231 | } | |
232 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
233 | ||
234 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
235 | ||
236 | capab = ifsta->capab; | |
237 | ||
238 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
239 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
240 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
241 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
242 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
243 | } | |
244 | ||
245 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, | |
246 | local->hw.conf.channel->center_freq, | |
247 | ifsta->ssid, ifsta->ssid_len); | |
248 | if (bss) { | |
249 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
250 | capab |= WLAN_CAPABILITY_PRIVACY; | |
251 | if (bss->wmm_used) | |
252 | wmm = 1; | |
253 | ||
254 | /* get all rates supported by the device and the AP as | |
255 | * some APs don't like getting a superset of their rates | |
256 | * in the association request (e.g. D-Link DAP 1353 in | |
257 | * b-only mode) */ | |
258 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
259 | ||
260 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
261 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
262 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
263 | ||
264 | ieee80211_rx_bss_put(local, bss); | |
265 | } else { | |
266 | rates = ~0; | |
267 | rates_len = sband->n_bitrates; | |
268 | } | |
269 | ||
270 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
271 | memset(mgmt, 0, 24); | |
272 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
273 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
274 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
275 | ||
276 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { | |
277 | skb_put(skb, 10); | |
278 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
279 | IEEE80211_STYPE_REASSOC_REQ); | |
280 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
281 | mgmt->u.reassoc_req.listen_interval = | |
282 | cpu_to_le16(local->hw.conf.listen_interval); | |
283 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
284 | ETH_ALEN); | |
285 | } else { | |
286 | skb_put(skb, 4); | |
287 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
288 | IEEE80211_STYPE_ASSOC_REQ); | |
289 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
290 | mgmt->u.reassoc_req.listen_interval = | |
291 | cpu_to_le16(local->hw.conf.listen_interval); | |
292 | } | |
293 | ||
294 | /* SSID */ | |
295 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
296 | *pos++ = WLAN_EID_SSID; | |
297 | *pos++ = ifsta->ssid_len; | |
298 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
299 | ||
300 | /* add all rates which were marked to be used above */ | |
301 | supp_rates_len = rates_len; | |
302 | if (supp_rates_len > 8) | |
303 | supp_rates_len = 8; | |
304 | ||
305 | len = sband->n_bitrates; | |
306 | pos = skb_put(skb, supp_rates_len + 2); | |
307 | *pos++ = WLAN_EID_SUPP_RATES; | |
308 | *pos++ = supp_rates_len; | |
309 | ||
310 | count = 0; | |
311 | for (i = 0; i < sband->n_bitrates; i++) { | |
312 | if (BIT(i) & rates) { | |
313 | int rate = sband->bitrates[i].bitrate; | |
314 | *pos++ = (u8) (rate / 5); | |
315 | if (++count == 8) | |
316 | break; | |
317 | } | |
318 | } | |
319 | ||
320 | if (rates_len > count) { | |
321 | pos = skb_put(skb, rates_len - count + 2); | |
322 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
323 | *pos++ = rates_len - count; | |
324 | ||
325 | for (i++; i < sband->n_bitrates; i++) { | |
326 | if (BIT(i) & rates) { | |
327 | int rate = sband->bitrates[i].bitrate; | |
328 | *pos++ = (u8) (rate / 5); | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
334 | /* 1. power capabilities */ | |
335 | pos = skb_put(skb, 4); | |
336 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
337 | *pos++ = 2; | |
338 | *pos++ = 0; /* min tx power */ | |
339 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
340 | ||
341 | /* 2. supported channels */ | |
342 | /* TODO: get this in reg domain format */ | |
343 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
344 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
345 | *pos++ = 2 * sband->n_channels; | |
346 | for (i = 0; i < sband->n_channels; i++) { | |
347 | *pos++ = ieee80211_frequency_to_channel( | |
348 | sband->channels[i].center_freq); | |
349 | *pos++ = 1; /* one channel in the subband*/ | |
350 | } | |
351 | } | |
352 | ||
353 | if (ifsta->extra_ie) { | |
354 | pos = skb_put(skb, ifsta->extra_ie_len); | |
355 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
356 | } | |
357 | ||
358 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
359 | pos = skb_put(skb, 9); | |
360 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
361 | *pos++ = 7; /* len */ | |
362 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
363 | *pos++ = 0x50; | |
364 | *pos++ = 0xf2; | |
365 | *pos++ = 2; /* WME */ | |
366 | *pos++ = 0; /* WME info */ | |
367 | *pos++ = 1; /* WME ver */ | |
368 | *pos++ = 0; | |
369 | } | |
370 | ||
371 | /* wmm support is a must to HT */ | |
372 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && | |
373 | sband->ht_info.ht_supported && | |
374 | (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) { | |
375 | struct ieee80211_ht_addt_info *ht_add_info = | |
376 | (struct ieee80211_ht_addt_info *)ht_add_ie; | |
377 | u16 cap = sband->ht_info.cap; | |
378 | __le16 tmp; | |
379 | u32 flags = local->hw.conf.channel->flags; | |
380 | ||
381 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
382 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
383 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
384 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
385 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
386 | } | |
387 | break; | |
388 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
389 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
390 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
391 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
392 | } | |
393 | break; | |
394 | } | |
395 | ||
396 | tmp = cpu_to_le16(cap); | |
397 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
398 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
399 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
400 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
401 | memcpy(pos, &tmp, sizeof(u16)); | |
402 | pos += sizeof(u16); | |
403 | /* TODO: needs a define here for << 2 */ | |
404 | *pos++ = sband->ht_info.ampdu_factor | | |
405 | (sband->ht_info.ampdu_density << 2); | |
406 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
407 | } | |
408 | ||
409 | kfree(ifsta->assocreq_ies); | |
410 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
411 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); | |
412 | if (ifsta->assocreq_ies) | |
413 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
414 | ||
415 | ieee80211_sta_tx(sdata, skb, 0); | |
416 | } | |
417 | ||
418 | ||
ef422bc0 JB |
419 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
420 | u16 stype, u16 reason) | |
9ac19a90 JB |
421 | { |
422 | struct ieee80211_local *local = sdata->local; | |
ef422bc0 | 423 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
9ac19a90 JB |
424 | struct sk_buff *skb; |
425 | struct ieee80211_mgmt *mgmt; | |
426 | ||
427 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
428 | if (!skb) { | |
ef422bc0 JB |
429 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
430 | "deauth/disassoc frame\n", sdata->dev->name); | |
9ac19a90 JB |
431 | return; |
432 | } | |
433 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
434 | ||
435 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
436 | memset(mgmt, 0, 24); | |
437 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
438 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
439 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
ef422bc0 | 440 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 441 | skb_put(skb, 2); |
ef422bc0 | 442 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
443 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
444 | ||
445 | ieee80211_sta_tx(sdata, skb, 0); | |
446 | } | |
447 | ||
9ac19a90 JB |
448 | static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata, |
449 | struct ieee80211_msrment_ie *request_ie, | |
450 | const u8 *da, const u8 *bssid, | |
451 | u8 dialog_token) | |
452 | { | |
453 | struct ieee80211_local *local = sdata->local; | |
454 | struct sk_buff *skb; | |
455 | struct ieee80211_mgmt *msr_report; | |
456 | ||
457 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | |
458 | sizeof(struct ieee80211_msrment_ie)); | |
459 | ||
460 | if (!skb) { | |
461 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
462 | "measurement report frame\n", sdata->dev->name); | |
463 | return; | |
464 | } | |
465 | ||
466 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
467 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | |
468 | memset(msr_report, 0, 24); | |
469 | memcpy(msr_report->da, da, ETH_ALEN); | |
470 | memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN); | |
471 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | |
472 | msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
473 | IEEE80211_STYPE_ACTION); | |
474 | ||
475 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | |
476 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
477 | msr_report->u.action.u.measurement.action_code = | |
478 | WLAN_ACTION_SPCT_MSR_RPRT; | |
479 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | |
480 | ||
481 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | |
482 | msr_report->u.action.u.measurement.length = | |
483 | sizeof(struct ieee80211_msrment_ie); | |
484 | ||
485 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | |
486 | sizeof(struct ieee80211_msrment_ie)); | |
487 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | |
488 | msr_report->u.action.u.measurement.msr_elem.mode |= | |
489 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | |
490 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | |
491 | ||
492 | ieee80211_sta_tx(sdata, skb, 0); | |
493 | } | |
494 | ||
60f8b39c | 495 | /* MLME */ |
f698d856 | 496 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
b079ada7 | 497 | struct ieee80211_sta_bss *bss) |
e2839d8f | 498 | { |
e2839d8f VK |
499 | struct ieee80211_local *local = sdata->local; |
500 | int i, have_higher_than_11mbit = 0; | |
501 | ||
e2839d8f VK |
502 | /* cf. IEEE 802.11 9.2.12 */ |
503 | for (i = 0; i < bss->supp_rates_len; i++) | |
504 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
505 | have_higher_than_11mbit = 1; | |
506 | ||
507 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
508 | have_higher_than_11mbit) | |
509 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
510 | else | |
511 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
512 | ||
3d35f7c6 | 513 | ieee80211_set_wmm_default(sdata); |
e2839d8f VK |
514 | } |
515 | ||
f698d856 | 516 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
f0706e82 JB |
517 | struct ieee80211_if_sta *ifsta, |
518 | u8 *wmm_param, size_t wmm_param_len) | |
519 | { | |
f0706e82 JB |
520 | struct ieee80211_tx_queue_params params; |
521 | size_t left; | |
522 | int count; | |
523 | u8 *pos; | |
524 | ||
3434fbd3 JB |
525 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
526 | return; | |
527 | ||
528 | if (!wmm_param) | |
529 | return; | |
530 | ||
f0706e82 JB |
531 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
532 | return; | |
533 | count = wmm_param[6] & 0x0f; | |
534 | if (count == ifsta->wmm_last_param_set) | |
535 | return; | |
536 | ifsta->wmm_last_param_set = count; | |
537 | ||
538 | pos = wmm_param + 8; | |
539 | left = wmm_param_len - 8; | |
540 | ||
541 | memset(¶ms, 0, sizeof(params)); | |
542 | ||
543 | if (!local->ops->conf_tx) | |
544 | return; | |
545 | ||
546 | local->wmm_acm = 0; | |
547 | for (; left >= 4; left -= 4, pos += 4) { | |
548 | int aci = (pos[0] >> 5) & 0x03; | |
549 | int acm = (pos[0] >> 4) & 0x01; | |
550 | int queue; | |
551 | ||
552 | switch (aci) { | |
553 | case 1: | |
e100bb64 | 554 | queue = 3; |
988c0f72 | 555 | if (acm) |
f0706e82 | 556 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
557 | break; |
558 | case 2: | |
e100bb64 | 559 | queue = 1; |
988c0f72 | 560 | if (acm) |
f0706e82 | 561 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
562 | break; |
563 | case 3: | |
e100bb64 | 564 | queue = 0; |
988c0f72 | 565 | if (acm) |
f0706e82 | 566 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
567 | break; |
568 | case 0: | |
569 | default: | |
e100bb64 | 570 | queue = 2; |
988c0f72 | 571 | if (acm) |
f0706e82 | 572 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
573 | break; |
574 | } | |
575 | ||
576 | params.aifs = pos[0] & 0x0f; | |
577 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
578 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 579 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 580 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 581 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 582 | "cWmin=%d cWmax=%d txop=%d\n", |
f698d856 | 583 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
584 | params.cw_max, params.txop); |
585 | #endif | |
f0706e82 JB |
586 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
587 | * AC for now) */ | |
588 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
589 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
f698d856 | 590 | "parameters for queue %d\n", local->mdev->name, queue); |
f0706e82 JB |
591 | } |
592 | } | |
593 | } | |
594 | ||
50c4afb9 JL |
595 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
596 | bool use_protection, | |
597 | bool use_short_preamble) | |
5628221c | 598 | { |
471b3efd | 599 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
ebd74487 | 600 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 601 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 602 | DECLARE_MAC_BUF(mac); |
ebd74487 | 603 | #endif |
471b3efd | 604 | u32 changed = 0; |
5628221c | 605 | |
471b3efd | 606 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 607 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c DD |
608 | if (net_ratelimit()) { |
609 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 610 | "%s)\n", |
471b3efd | 611 | sdata->dev->name, |
5628221c | 612 | use_protection ? "enabled" : "disabled", |
0795af57 | 613 | print_mac(mac, ifsta->bssid)); |
5628221c | 614 | } |
f4ea83dd | 615 | #endif |
471b3efd JB |
616 | bss_conf->use_cts_prot = use_protection; |
617 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 618 | } |
7e9ed188 | 619 | |
d43c7b37 | 620 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 621 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
622 | if (net_ratelimit()) { |
623 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 624 | " (BSSID=%s)\n", |
471b3efd | 625 | sdata->dev->name, |
d43c7b37 | 626 | use_short_preamble ? "short" : "long", |
0795af57 | 627 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 628 | } |
f4ea83dd | 629 | #endif |
d43c7b37 | 630 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 631 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 632 | } |
d9430a32 | 633 | |
471b3efd | 634 | return changed; |
5628221c DD |
635 | } |
636 | ||
50c4afb9 JL |
637 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
638 | u8 erp_value) | |
639 | { | |
640 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
641 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
642 | ||
643 | return ieee80211_handle_protect_preamb(sdata, | |
644 | use_protection, use_short_preamble); | |
645 | } | |
646 | ||
647 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
648 | struct ieee80211_sta_bss *bss) | |
649 | { | |
650 | u32 changed = 0; | |
651 | ||
652 | if (bss->has_erp_value) | |
653 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
654 | else { | |
655 | u16 capab = bss->capability; | |
656 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
657 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
658 | } | |
659 | ||
660 | return changed; | |
661 | } | |
662 | ||
f5e5bf25 TW |
663 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
664 | struct ieee80211_if_sta *ifsta) | |
665 | { | |
666 | union iwreq_data wrqu; | |
667 | memset(&wrqu, 0, sizeof(wrqu)); | |
668 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) | |
669 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
670 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
671 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
672 | } | |
673 | ||
f698d856 | 674 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
675 | struct ieee80211_if_sta *ifsta) |
676 | { | |
f0706e82 JB |
677 | union iwreq_data wrqu; |
678 | ||
f0706e82 | 679 | if (ifsta->assocreq_ies) { |
087d833e JM |
680 | memset(&wrqu, 0, sizeof(wrqu)); |
681 | wrqu.data.length = ifsta->assocreq_ies_len; | |
b171e19e | 682 | wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu, |
087d833e | 683 | ifsta->assocreq_ies); |
f0706e82 | 684 | } |
087d833e JM |
685 | if (ifsta->assocresp_ies) { |
686 | memset(&wrqu, 0, sizeof(wrqu)); | |
687 | wrqu.data.length = ifsta->assocresp_ies_len; | |
b171e19e | 688 | wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu, |
087d833e | 689 | ifsta->assocresp_ies); |
f0706e82 | 690 | } |
f0706e82 JB |
691 | } |
692 | ||
693 | ||
f698d856 | 694 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
f5e5bf25 | 695 | struct ieee80211_if_sta *ifsta) |
f0706e82 | 696 | { |
471b3efd | 697 | struct ieee80211_local *local = sdata->local; |
38668c05 | 698 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
471b3efd | 699 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 700 | |
f5e5bf25 | 701 | struct ieee80211_sta_bss *bss; |
d6f2da5b | 702 | |
f5e5bf25 | 703 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 704 | |
f5e5bf25 TW |
705 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
706 | return; | |
21c0cbe7 | 707 | |
f5e5bf25 TW |
708 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
709 | conf->channel->center_freq, | |
710 | ifsta->ssid, ifsta->ssid_len); | |
711 | if (bss) { | |
712 | /* set timing information */ | |
713 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
714 | sdata->bss_conf.timestamp = bss->timestamp; | |
715 | sdata->bss_conf.dtim_period = bss->dtim_period; | |
21c0cbe7 | 716 | |
f5e5bf25 | 717 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
9ac19a90 JB |
718 | |
719 | ieee80211_rx_bss_put(local, bss); | |
f0706e82 JB |
720 | } |
721 | ||
9ac19a90 JB |
722 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
723 | changed |= BSS_CHANGED_HT; | |
724 | sdata->bss_conf.assoc_ht = 1; | |
725 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
726 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
f0706e82 | 727 | } |
3434fbd3 | 728 | |
9ac19a90 JB |
729 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
730 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); | |
731 | ieee80211_sta_send_associnfo(sdata, ifsta); | |
9306102e | 732 | |
9ac19a90 JB |
733 | ifsta->last_probe = jiffies; |
734 | ieee80211_led_assoc(local, 1); | |
9306102e | 735 | |
9ac19a90 JB |
736 | sdata->bss_conf.assoc = 1; |
737 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 | 738 | |
9ac19a90 JB |
739 | netif_tx_start_all_queues(sdata->dev); |
740 | netif_carrier_on(sdata->dev); | |
f0706e82 | 741 | |
9ac19a90 | 742 | ieee80211_sta_send_apinfo(sdata, ifsta); |
f0706e82 JB |
743 | } |
744 | ||
9ac19a90 JB |
745 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
746 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 747 | { |
9ac19a90 | 748 | DECLARE_MAC_BUF(mac); |
f0706e82 | 749 | |
9ac19a90 JB |
750 | ifsta->direct_probe_tries++; |
751 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
752 | printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n", | |
753 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
754 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
755 | return; |
756 | } | |
f0706e82 | 757 | |
9ac19a90 JB |
758 | printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n", |
759 | sdata->dev->name, print_mac(mac, ifsta->bssid), | |
760 | ifsta->direct_probe_tries); | |
f0706e82 | 761 | |
9ac19a90 | 762 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 763 | |
9ac19a90 JB |
764 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
765 | ||
766 | /* Direct probe is sent to broadcast address as some APs | |
767 | * will not answer to direct packet in unassociated state. | |
768 | */ | |
769 | ieee80211_send_probe_req(sdata, NULL, | |
770 | ifsta->ssid, ifsta->ssid_len); | |
771 | ||
772 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
60f8b39c | 773 | } |
f0706e82 | 774 | |
9ac19a90 JB |
775 | |
776 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, | |
777 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 778 | { |
9ac19a90 | 779 | DECLARE_MAC_BUF(mac); |
f0706e82 | 780 | |
9ac19a90 JB |
781 | ifsta->auth_tries++; |
782 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
783 | printk(KERN_DEBUG "%s: authentication with AP %s" | |
784 | " timed out\n", | |
785 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
786 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
787 | return; |
788 | } | |
f0706e82 | 789 | |
9ac19a90 JB |
790 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
791 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", | |
792 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 | 793 | |
9ac19a90 JB |
794 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
795 | ||
796 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
f0706e82 JB |
797 | } |
798 | ||
aa458d17 TW |
799 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
800 | struct ieee80211_if_sta *ifsta, bool deauth, | |
801 | bool self_disconnected, u16 reason) | |
802 | { | |
803 | struct ieee80211_local *local = sdata->local; | |
804 | struct sta_info *sta; | |
f5e5bf25 | 805 | u32 changed = BSS_CHANGED_ASSOC; |
aa458d17 TW |
806 | |
807 | rcu_read_lock(); | |
808 | ||
809 | sta = sta_info_get(local, ifsta->bssid); | |
810 | if (!sta) { | |
811 | rcu_read_unlock(); | |
812 | return; | |
813 | } | |
814 | ||
815 | if (deauth) { | |
816 | ifsta->direct_probe_tries = 0; | |
817 | ifsta->auth_tries = 0; | |
818 | } | |
819 | ifsta->assoc_scan_tries = 0; | |
820 | ifsta->assoc_tries = 0; | |
821 | ||
24e64622 | 822 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
823 | netif_carrier_off(sdata->dev); |
824 | ||
825 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); | |
826 | ||
827 | if (self_disconnected) { | |
828 | if (deauth) | |
ef422bc0 JB |
829 | ieee80211_send_deauth_disassoc(sdata, |
830 | IEEE80211_STYPE_DEAUTH, reason); | |
aa458d17 | 831 | else |
ef422bc0 JB |
832 | ieee80211_send_deauth_disassoc(sdata, |
833 | IEEE80211_STYPE_DISASSOC, reason); | |
aa458d17 TW |
834 | } |
835 | ||
f5e5bf25 TW |
836 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
837 | changed |= ieee80211_reset_erp_info(sdata); | |
838 | ||
839 | if (sdata->bss_conf.assoc_ht) | |
840 | changed |= BSS_CHANGED_HT; | |
841 | ||
842 | sdata->bss_conf.assoc_ht = 0; | |
843 | sdata->bss_conf.ht_conf = NULL; | |
844 | sdata->bss_conf.ht_bss_conf = NULL; | |
845 | ||
846 | ieee80211_led_assoc(local, 0); | |
847 | sdata->bss_conf.assoc = 0; | |
848 | ||
849 | ieee80211_sta_send_apinfo(sdata, ifsta); | |
aa458d17 TW |
850 | |
851 | if (self_disconnected) | |
852 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
853 | ||
854 | sta_info_unlink(&sta); | |
855 | ||
856 | rcu_read_unlock(); | |
857 | ||
858 | sta_info_destroy(sta); | |
859 | } | |
f0706e82 | 860 | |
9ac19a90 JB |
861 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
862 | { | |
863 | if (!sdata || !sdata->default_key || | |
864 | sdata->default_key->conf.alg != ALG_WEP) | |
865 | return 0; | |
866 | return 1; | |
867 | } | |
868 | ||
f698d856 | 869 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
870 | struct ieee80211_if_sta *ifsta) |
871 | { | |
f698d856 | 872 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 873 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
874 | int bss_privacy; |
875 | int wep_privacy; | |
876 | int privacy_invoked; | |
f0706e82 | 877 | |
5b98b1f7 | 878 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
879 | return 0; |
880 | ||
f698d856 | 881 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
8318d78a | 882 | local->hw.conf.channel->center_freq, |
cffdd30d | 883 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
884 | if (!bss) |
885 | return 0; | |
886 | ||
5b98b1f7 | 887 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 888 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
5b98b1f7 | 889 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 890 | |
3e122be0 | 891 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 892 | |
5b98b1f7 JB |
893 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
894 | return 0; | |
895 | ||
896 | return 1; | |
f0706e82 JB |
897 | } |
898 | ||
f698d856 | 899 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
900 | struct ieee80211_if_sta *ifsta) |
901 | { | |
0795af57 JP |
902 | DECLARE_MAC_BUF(mac); |
903 | ||
f0706e82 JB |
904 | ifsta->assoc_tries++; |
905 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 906 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 907 | " timed out\n", |
f698d856 | 908 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
48c2fc59 | 909 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
910 | return; |
911 | } | |
912 | ||
48c2fc59 | 913 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
0795af57 | 914 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
f698d856 JBG |
915 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
916 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
f0706e82 | 917 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 918 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
48c2fc59 | 919 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
920 | return; |
921 | } | |
922 | ||
f698d856 | 923 | ieee80211_send_assoc(sdata, ifsta); |
f0706e82 JB |
924 | |
925 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
926 | } | |
927 | ||
928 | ||
f698d856 | 929 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
930 | struct ieee80211_if_sta *ifsta) |
931 | { | |
f698d856 | 932 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
933 | struct sta_info *sta; |
934 | int disassoc; | |
0795af57 | 935 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
936 | |
937 | /* TODO: start monitoring current AP signal quality and number of | |
938 | * missed beacons. Scan other channels every now and then and search | |
939 | * for better APs. */ | |
940 | /* TODO: remove expired BSSes */ | |
941 | ||
48c2fc59 | 942 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 943 | |
d0709a65 JB |
944 | rcu_read_lock(); |
945 | ||
f0706e82 JB |
946 | sta = sta_info_get(local, ifsta->bssid); |
947 | if (!sta) { | |
0795af57 | 948 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
f698d856 | 949 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
950 | disassoc = 1; |
951 | } else { | |
952 | disassoc = 0; | |
953 | if (time_after(jiffies, | |
954 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 955 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 956 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 957 | "current AP %s - assume out of " |
f0706e82 | 958 | "range\n", |
f698d856 | 959 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 960 | disassoc = 1; |
d6f2da5b | 961 | } else |
f698d856 | 962 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
963 | local->scan_ssid, |
964 | local->scan_ssid_len); | |
d6f2da5b | 965 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 966 | } else { |
d6f2da5b | 967 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
968 | if (time_after(jiffies, ifsta->last_probe + |
969 | IEEE80211_PROBE_INTERVAL)) { | |
970 | ifsta->last_probe = jiffies; | |
f698d856 | 971 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
972 | ifsta->ssid, |
973 | ifsta->ssid_len); | |
974 | } | |
975 | } | |
f0706e82 | 976 | } |
d0709a65 JB |
977 | |
978 | rcu_read_unlock(); | |
979 | ||
60f8b39c JB |
980 | if (disassoc) |
981 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
982 | WLAN_REASON_PREV_AUTH_NOT_VALID); | |
983 | else | |
984 | mod_timer(&ifsta->timer, jiffies + | |
985 | IEEE80211_MONITORING_INTERVAL); | |
f0706e82 JB |
986 | } |
987 | ||
988 | ||
f698d856 | 989 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
990 | struct ieee80211_if_sta *ifsta) |
991 | { | |
f698d856 | 992 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
d6f2da5b | 993 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f698d856 | 994 | ieee80211_associate(sdata, ifsta); |
f0706e82 JB |
995 | } |
996 | ||
997 | ||
f698d856 | 998 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
999 | struct ieee80211_if_sta *ifsta, |
1000 | struct ieee80211_mgmt *mgmt, | |
1001 | size_t len) | |
1002 | { | |
1003 | u8 *pos; | |
1004 | struct ieee802_11_elems elems; | |
1005 | ||
f0706e82 | 1006 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1007 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1008 | if (!elems.challenge) |
f0706e82 | 1009 | return; |
f698d856 | 1010 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
f0706e82 JB |
1011 | elems.challenge_len + 2, 1); |
1012 | } | |
1013 | ||
f698d856 | 1014 | static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata, |
b6623486 AK |
1015 | struct ieee80211_mgmt *mgmt, |
1016 | size_t len) | |
1017 | { | |
1018 | /* | |
1019 | * Ignoring measurement request is spec violation. | |
1020 | * Mandatory measurements must be reported optional | |
1021 | * measurements might be refused or reported incapable | |
1022 | * For now just refuse | |
1023 | * TODO: Answer basic measurement as unmeasured | |
1024 | */ | |
f698d856 | 1025 | ieee80211_send_refuse_measurement_request(sdata, |
b6623486 AK |
1026 | &mgmt->u.action.u.measurement.msr_elem, |
1027 | mgmt->sa, mgmt->bssid, | |
1028 | mgmt->u.action.u.measurement.dialog_token); | |
1029 | } | |
1030 | ||
1031 | ||
f698d856 | 1032 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1033 | struct ieee80211_if_sta *ifsta, |
1034 | struct ieee80211_mgmt *mgmt, | |
1035 | size_t len) | |
1036 | { | |
f0706e82 | 1037 | u16 auth_alg, auth_transaction, status_code; |
0795af57 | 1038 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1039 | |
48c2fc59 | 1040 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
f4ea83dd | 1041 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
f0706e82 | 1042 | return; |
f0706e82 | 1043 | |
f4ea83dd | 1044 | if (len < 24 + 6) |
f0706e82 | 1045 | return; |
f0706e82 | 1046 | |
51fb61e7 | 1047 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1048 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1049 | return; |
f0706e82 | 1050 | |
51fb61e7 | 1051 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1052 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1053 | return; |
f0706e82 JB |
1054 | |
1055 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1056 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1057 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1058 | ||
51fb61e7 | 1059 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
1060 | /* |
1061 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
1062 | * networks and most implementations do not seem to use it. |
1063 | * However, try to reply to authentication attempts if someone | |
1064 | * has actually implemented this. | |
135a2110 | 1065 | */ |
f4ea83dd | 1066 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
f0706e82 | 1067 | return; |
f698d856 | 1068 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
f0706e82 JB |
1069 | } |
1070 | ||
1071 | if (auth_alg != ifsta->auth_alg || | |
f4ea83dd | 1072 | auth_transaction != ifsta->auth_transaction) |
f0706e82 | 1073 | return; |
f0706e82 JB |
1074 | |
1075 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1076 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1077 | u8 algs[3]; | |
1078 | const int num_algs = ARRAY_SIZE(algs); | |
1079 | int i, pos; | |
1080 | algs[0] = algs[1] = algs[2] = 0xff; | |
1081 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1082 | algs[0] = WLAN_AUTH_OPEN; | |
1083 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1084 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1085 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1086 | algs[2] = WLAN_AUTH_LEAP; | |
1087 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1088 | pos = 0; | |
1089 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1090 | pos = 1; | |
1091 | else | |
1092 | pos = 2; | |
1093 | for (i = 0; i < num_algs; i++) { | |
1094 | pos++; | |
1095 | if (pos >= num_algs) | |
1096 | pos = 0; | |
1097 | if (algs[pos] == ifsta->auth_alg || | |
1098 | algs[pos] == 0xff) | |
1099 | continue; | |
1100 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1101 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 JB |
1102 | continue; |
1103 | ifsta->auth_alg = algs[pos]; | |
f0706e82 JB |
1104 | break; |
1105 | } | |
1106 | } | |
1107 | return; | |
1108 | } | |
1109 | ||
1110 | switch (ifsta->auth_alg) { | |
1111 | case WLAN_AUTH_OPEN: | |
1112 | case WLAN_AUTH_LEAP: | |
f698d856 | 1113 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 JB |
1114 | break; |
1115 | case WLAN_AUTH_SHARED_KEY: | |
1116 | if (ifsta->auth_transaction == 4) | |
f698d856 | 1117 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 | 1118 | else |
f698d856 | 1119 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
f0706e82 JB |
1120 | break; |
1121 | } | |
1122 | } | |
1123 | ||
1124 | ||
f698d856 | 1125 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1126 | struct ieee80211_if_sta *ifsta, |
1127 | struct ieee80211_mgmt *mgmt, | |
1128 | size_t len) | |
1129 | { | |
1130 | u16 reason_code; | |
0795af57 | 1131 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1132 | |
f4ea83dd | 1133 | if (len < 24 + 2) |
f0706e82 | 1134 | return; |
f0706e82 | 1135 | |
f4ea83dd | 1136 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1137 | return; |
f0706e82 JB |
1138 | |
1139 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1140 | ||
988c0f72 | 1141 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f698d856 | 1142 | printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name); |
f0706e82 | 1143 | |
48c2fc59 TW |
1144 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
1145 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1146 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
9859b81e | 1147 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 JB |
1148 | mod_timer(&ifsta->timer, jiffies + |
1149 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1150 | } | |
1151 | ||
aa458d17 | 1152 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
d6f2da5b | 1153 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1154 | } |
1155 | ||
1156 | ||
f698d856 | 1157 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1158 | struct ieee80211_if_sta *ifsta, |
1159 | struct ieee80211_mgmt *mgmt, | |
1160 | size_t len) | |
1161 | { | |
1162 | u16 reason_code; | |
0795af57 | 1163 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1164 | |
f4ea83dd | 1165 | if (len < 24 + 2) |
f0706e82 | 1166 | return; |
f0706e82 | 1167 | |
f4ea83dd | 1168 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1169 | return; |
f0706e82 JB |
1170 | |
1171 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1172 | ||
d6f2da5b | 1173 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f698d856 | 1174 | printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name); |
f0706e82 | 1175 | |
48c2fc59 TW |
1176 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
1177 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; | |
f0706e82 JB |
1178 | mod_timer(&ifsta->timer, jiffies + |
1179 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1180 | } | |
1181 | ||
aa458d17 | 1182 | ieee80211_set_disassoc(sdata, ifsta, false, false, 0); |
f0706e82 JB |
1183 | } |
1184 | ||
1185 | ||
471b3efd | 1186 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1187 | struct ieee80211_if_sta *ifsta, |
1188 | struct ieee80211_mgmt *mgmt, | |
1189 | size_t len, | |
1190 | int reassoc) | |
1191 | { | |
471b3efd | 1192 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1193 | struct ieee80211_supported_band *sband; |
f0706e82 | 1194 | struct sta_info *sta; |
8318d78a | 1195 | u64 rates, basic_rates; |
f0706e82 JB |
1196 | u16 capab_info, status_code, aid; |
1197 | struct ieee802_11_elems elems; | |
471b3efd | 1198 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1199 | u8 *pos; |
1200 | int i, j; | |
0795af57 | 1201 | DECLARE_MAC_BUF(mac); |
8318d78a | 1202 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1203 | |
1204 | /* AssocResp and ReassocResp have identical structure, so process both | |
1205 | * of them in this function. */ | |
1206 | ||
48c2fc59 | 1207 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1208 | return; |
f0706e82 | 1209 | |
f4ea83dd | 1210 | if (len < 24 + 6) |
f0706e82 | 1211 | return; |
f0706e82 | 1212 | |
f4ea83dd | 1213 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1214 | return; |
f0706e82 JB |
1215 | |
1216 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1217 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1218 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1219 | |
0795af57 | 1220 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1221 | "status=%d aid=%d)\n", |
f698d856 | 1222 | sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1223 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1224 | |
1225 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1226 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1227 | sdata->dev->name, status_code); |
8a69aa93 DD |
1228 | /* if this was a reassociation, ensure we try a "full" |
1229 | * association next time. This works around some broken APs | |
1230 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1231 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1232 | return; |
1233 | } | |
1234 | ||
1dd84aa2 JB |
1235 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1236 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1237 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1238 | aid &= ~(BIT(15) | BIT(14)); |
1239 | ||
f0706e82 | 1240 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1241 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1242 | |
1243 | if (!elems.supp_rates) { | |
1244 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1245 | sdata->dev->name); |
f0706e82 JB |
1246 | return; |
1247 | } | |
1248 | ||
f698d856 | 1249 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
f0706e82 JB |
1250 | ifsta->aid = aid; |
1251 | ifsta->ap_capab = capab_info; | |
1252 | ||
1253 | kfree(ifsta->assocresp_ies); | |
1254 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 1255 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
1256 | if (ifsta->assocresp_ies) |
1257 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
1258 | ||
d0709a65 JB |
1259 | rcu_read_lock(); |
1260 | ||
f0706e82 JB |
1261 | /* Add STA entry for the AP */ |
1262 | sta = sta_info_get(local, ifsta->bssid); | |
1263 | if (!sta) { | |
1264 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 1265 | int err; |
d0709a65 | 1266 | |
73651ee6 JB |
1267 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
1268 | if (!sta) { | |
1269 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1270 | " the AP\n", sdata->dev->name); |
d0709a65 | 1271 | rcu_read_unlock(); |
f0706e82 JB |
1272 | return; |
1273 | } | |
60f8b39c JB |
1274 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
1275 | local->hw.conf.channel->center_freq, | |
1276 | ifsta->ssid, ifsta->ssid_len); | |
1277 | if (bss) { | |
1278 | sta->last_signal = bss->signal; | |
1279 | sta->last_qual = bss->qual; | |
1280 | sta->last_noise = bss->noise; | |
1281 | ieee80211_rx_bss_put(local, bss); | |
1282 | } | |
f709fc69 | 1283 | |
60f8b39c JB |
1284 | err = sta_info_insert(sta); |
1285 | if (err) { | |
1286 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1287 | " the AP (error %d)\n", sdata->dev->name, err); | |
1288 | rcu_read_unlock(); | |
1289 | return; | |
f709fc69 | 1290 | } |
60f8b39c JB |
1291 | /* update new sta with its last rx activity */ |
1292 | sta->last_rx = jiffies; | |
f709fc69 | 1293 | } |
f709fc69 | 1294 | |
60f8b39c JB |
1295 | /* |
1296 | * FIXME: Do we really need to update the sta_info's information here? | |
1297 | * We already know about the AP (we found it in our list) so it | |
1298 | * should already be filled with the right info, no? | |
1299 | * As is stands, all this is racy because typically we assume | |
1300 | * the information that is filled in here (except flags) doesn't | |
1301 | * change while a STA structure is alive. As such, it should move | |
1302 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1303 | */ | |
f709fc69 | 1304 | |
60f8b39c JB |
1305 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
1306 | WLAN_STA_AUTHORIZED); | |
05e5e883 | 1307 | |
60f8b39c JB |
1308 | rates = 0; |
1309 | basic_rates = 0; | |
1310 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1311 | |
60f8b39c JB |
1312 | for (i = 0; i < elems.supp_rates_len; i++) { |
1313 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
f709fc69 | 1314 | |
60f8b39c JB |
1315 | if (rate > 110) |
1316 | have_higher_than_11mbit = true; | |
1317 | ||
1318 | for (j = 0; j < sband->n_bitrates; j++) { | |
1319 | if (sband->bitrates[j].bitrate == rate) | |
1320 | rates |= BIT(j); | |
1321 | if (elems.supp_rates[i] & 0x80) | |
1322 | basic_rates |= BIT(j); | |
f709fc69 | 1323 | } |
f709fc69 LCC |
1324 | } |
1325 | ||
60f8b39c JB |
1326 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1327 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
f0706e82 | 1328 | |
60f8b39c JB |
1329 | if (rate > 110) |
1330 | have_higher_than_11mbit = true; | |
f0706e82 | 1331 | |
60f8b39c JB |
1332 | for (j = 0; j < sband->n_bitrates; j++) { |
1333 | if (sband->bitrates[j].bitrate == rate) | |
1334 | rates |= BIT(j); | |
1335 | if (elems.ext_supp_rates[i] & 0x80) | |
1336 | basic_rates |= BIT(j); | |
1337 | } | |
1ebebea8 | 1338 | } |
f0706e82 | 1339 | |
60f8b39c JB |
1340 | sta->supp_rates[local->hw.conf.channel->band] = rates; |
1341 | sdata->basic_rates = basic_rates; | |
1342 | ||
1343 | /* cf. IEEE 802.11 9.2.12 */ | |
1344 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1345 | have_higher_than_11mbit) | |
1346 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1347 | else | |
1348 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1349 | |
60f8b39c JB |
1350 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
1351 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
1352 | struct ieee80211_ht_bss_info bss_info; | |
1353 | ieee80211_ht_cap_ie_to_ht_info( | |
1354 | (struct ieee80211_ht_cap *) | |
1355 | elems.ht_cap_elem, &sta->ht_info); | |
1356 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1357 | (struct ieee80211_ht_addt_info *) | |
1358 | elems.ht_info_elem, &bss_info); | |
1359 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); | |
1360 | } | |
f0706e82 | 1361 | |
60f8b39c | 1362 | rate_control_rate_init(sta, local); |
f0706e82 | 1363 | |
60f8b39c JB |
1364 | if (elems.wmm_param) { |
1365 | set_sta_flags(sta, WLAN_STA_WME); | |
1366 | rcu_read_unlock(); | |
1367 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, | |
1368 | elems.wmm_param_len); | |
1369 | } else | |
1370 | rcu_read_unlock(); | |
f0706e82 | 1371 | |
60f8b39c JB |
1372 | /* set AID and assoc capability, |
1373 | * ieee80211_set_associated() will tell the driver */ | |
1374 | bss_conf->aid = aid; | |
1375 | bss_conf->assoc_capability = capab_info; | |
1376 | ieee80211_set_associated(sdata, ifsta); | |
f0706e82 | 1377 | |
60f8b39c | 1378 | ieee80211_associated(sdata, ifsta); |
f0706e82 JB |
1379 | } |
1380 | ||
1381 | ||
f698d856 | 1382 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
a607268a BR |
1383 | struct ieee80211_if_sta *ifsta, |
1384 | struct ieee80211_sta_bss *bss) | |
1385 | { | |
f698d856 | 1386 | struct ieee80211_local *local = sdata->local; |
a607268a BR |
1387 | int res, rates, i, j; |
1388 | struct sk_buff *skb; | |
1389 | struct ieee80211_mgmt *mgmt; | |
a607268a | 1390 | u8 *pos; |
a607268a | 1391 | struct ieee80211_supported_band *sband; |
507b06d0 | 1392 | union iwreq_data wrqu; |
a607268a BR |
1393 | |
1394 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1395 | ||
1396 | /* Remove possible STA entries from other IBSS networks. */ | |
dc6676b7 | 1397 | sta_info_flush_delayed(sdata); |
a607268a BR |
1398 | |
1399 | if (local->ops->reset_tsf) { | |
1400 | /* Reset own TSF to allow time synchronization work. */ | |
1401 | local->ops->reset_tsf(local_to_hw(local)); | |
1402 | } | |
1403 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
9d139c81 | 1404 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
a607268a BR |
1405 | if (res) |
1406 | return res; | |
1407 | ||
1408 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
1409 | ||
a607268a BR |
1410 | sdata->drop_unencrypted = bss->capability & |
1411 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
1412 | ||
f698d856 | 1413 | res = ieee80211_set_freq(sdata, bss->freq); |
a607268a | 1414 | |
be038b37 AK |
1415 | if (res) |
1416 | return res; | |
a607268a | 1417 | |
9d139c81 | 1418 | /* Build IBSS probe response */ |
a607268a | 1419 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
9d139c81 | 1420 | if (skb) { |
a607268a BR |
1421 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1422 | ||
1423 | mgmt = (struct ieee80211_mgmt *) | |
1424 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
1425 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
e7827a70 HH |
1426 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
1427 | IEEE80211_STYPE_PROBE_RESP); | |
a607268a | 1428 | memset(mgmt->da, 0xff, ETH_ALEN); |
f698d856 | 1429 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
a607268a BR |
1430 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
1431 | mgmt->u.beacon.beacon_int = | |
1432 | cpu_to_le16(local->hw.conf.beacon_int); | |
4faeb860 | 1433 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
a607268a BR |
1434 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
1435 | ||
1436 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
1437 | *pos++ = WLAN_EID_SSID; | |
1438 | *pos++ = ifsta->ssid_len; | |
1439 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
1440 | ||
1441 | rates = bss->supp_rates_len; | |
1442 | if (rates > 8) | |
1443 | rates = 8; | |
1444 | pos = skb_put(skb, 2 + rates); | |
1445 | *pos++ = WLAN_EID_SUPP_RATES; | |
1446 | *pos++ = rates; | |
1447 | memcpy(pos, bss->supp_rates, rates); | |
1448 | ||
1449 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
1450 | pos = skb_put(skb, 2 + 1); | |
1451 | *pos++ = WLAN_EID_DS_PARAMS; | |
1452 | *pos++ = 1; | |
1453 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
1454 | } | |
1455 | ||
1456 | pos = skb_put(skb, 2 + 2); | |
1457 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
1458 | *pos++ = 2; | |
1459 | /* FIX: set ATIM window based on scan results */ | |
1460 | *pos++ = 0; | |
1461 | *pos++ = 0; | |
1462 | ||
1463 | if (bss->supp_rates_len > 8) { | |
1464 | rates = bss->supp_rates_len - 8; | |
1465 | pos = skb_put(skb, 2 + rates); | |
1466 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1467 | *pos++ = rates; | |
1468 | memcpy(pos, &bss->supp_rates[8], rates); | |
1469 | } | |
1470 | ||
9d139c81 | 1471 | ifsta->probe_resp = skb; |
e039fa4a | 1472 | |
9d139c81 JB |
1473 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
1474 | } | |
a607268a | 1475 | |
9d139c81 JB |
1476 | rates = 0; |
1477 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1478 | for (i = 0; i < bss->supp_rates_len; i++) { | |
1479 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
1480 | for (j = 0; j < sband->n_bitrates; j++) | |
1481 | if (sband->bitrates[j].bitrate == bitrate) | |
1482 | rates |= BIT(j); | |
a607268a | 1483 | } |
9d139c81 JB |
1484 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
1485 | ||
b079ada7 | 1486 | ieee80211_sta_def_wmm_params(sdata, bss); |
a607268a | 1487 | |
48c2fc59 | 1488 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
a607268a BR |
1489 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
1490 | ||
507b06d0 DW |
1491 | memset(&wrqu, 0, sizeof(wrqu)); |
1492 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
f698d856 | 1493 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
a607268a BR |
1494 | |
1495 | return res; | |
1496 | } | |
1497 | ||
f709fc69 LCC |
1498 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
1499 | struct ieee802_11_elems *elems, | |
1500 | enum ieee80211_band band) | |
1501 | { | |
1502 | struct ieee80211_supported_band *sband; | |
1503 | struct ieee80211_rate *bitrates; | |
1504 | size_t num_rates; | |
1505 | u64 supp_rates; | |
1506 | int i, j; | |
1507 | sband = local->hw.wiphy->bands[band]; | |
1508 | ||
1509 | if (!sband) { | |
1510 | WARN_ON(1); | |
1511 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1512 | } | |
1513 | ||
1514 | bitrates = sband->bitrates; | |
1515 | num_rates = sband->n_bitrates; | |
1516 | supp_rates = 0; | |
1517 | for (i = 0; i < elems->supp_rates_len + | |
1518 | elems->ext_supp_rates_len; i++) { | |
1519 | u8 rate = 0; | |
1520 | int own_rate; | |
1521 | if (i < elems->supp_rates_len) | |
1522 | rate = elems->supp_rates[i]; | |
1523 | else if (elems->ext_supp_rates) | |
1524 | rate = elems->ext_supp_rates | |
1525 | [i - elems->supp_rates_len]; | |
1526 | own_rate = 5 * (rate & 0x7f); | |
1527 | for (j = 0; j < num_rates; j++) | |
1528 | if (bitrates[j].bitrate == own_rate) | |
1529 | supp_rates |= BIT(j); | |
1530 | } | |
1531 | return supp_rates; | |
1532 | } | |
1533 | ||
8e1535d5 EG |
1534 | static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local, |
1535 | enum ieee80211_band band) | |
1536 | { | |
1537 | struct ieee80211_supported_band *sband; | |
1538 | struct ieee80211_rate *bitrates; | |
1539 | u64 mandatory_rates; | |
1540 | enum ieee80211_rate_flags mandatory_flag; | |
1541 | int i; | |
1542 | ||
1543 | sband = local->hw.wiphy->bands[band]; | |
1544 | if (!sband) { | |
1545 | WARN_ON(1); | |
1546 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1547 | } | |
1548 | ||
1549 | if (band == IEEE80211_BAND_2GHZ) | |
1550 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
1551 | else | |
1552 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
1553 | ||
1554 | bitrates = sband->bitrates; | |
1555 | mandatory_rates = 0; | |
1556 | for (i = 0; i < sband->n_bitrates; i++) | |
1557 | if (bitrates[i].flags & mandatory_flag) | |
1558 | mandatory_rates |= BIT(i); | |
1559 | return mandatory_rates; | |
1560 | } | |
a607268a | 1561 | |
98c8fccf JB |
1562 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1563 | struct ieee80211_mgmt *mgmt, | |
1564 | size_t len, | |
1565 | struct ieee80211_rx_status *rx_status, | |
1566 | struct ieee802_11_elems *elems, | |
1567 | bool beacon) | |
1568 | { | |
1569 | struct ieee80211_local *local = sdata->local; | |
1570 | int freq; | |
1571 | struct ieee80211_sta_bss *bss; | |
1572 | struct sta_info *sta; | |
1573 | struct ieee80211_channel *channel; | |
1574 | u64 beacon_timestamp, rx_timestamp; | |
1575 | u64 supp_rates = 0; | |
1576 | enum ieee80211_band band = rx_status->band; | |
1577 | DECLARE_MAC_BUF(mac); | |
1578 | DECLARE_MAC_BUF(mac2); | |
1579 | ||
1580 | if (elems->ds_params && elems->ds_params_len == 1) | |
1581 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1582 | else | |
1583 | freq = rx_status->freq; | |
1584 | ||
1585 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1586 | ||
1587 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1588 | return; | |
1589 | ||
1590 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && | |
1591 | elems->mesh_config && mesh_matches_local(elems, sdata)) { | |
1592 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1593 | ||
1594 | mesh_neighbour_update(mgmt->sa, supp_rates, sdata, | |
1595 | mesh_peer_accepts_plinks(elems)); | |
1596 | } | |
1597 | ||
1598 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && | |
1599 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { | |
1600 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1601 | ||
1602 | rcu_read_lock(); | |
1603 | ||
1604 | sta = sta_info_get(local, mgmt->sa); | |
1605 | if (sta) { | |
1606 | u64 prev_rates; | |
1607 | ||
1608 | prev_rates = sta->supp_rates[band]; | |
1609 | /* make sure mandatory rates are always added */ | |
1610 | sta->supp_rates[band] = supp_rates | | |
1611 | ieee80211_sta_get_mandatory_rates(local, band); | |
1612 | ||
1613 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1614 | if (sta->supp_rates[band] != prev_rates) | |
1615 | printk(KERN_DEBUG "%s: updated supp_rates set " | |
1616 | "for %s based on beacon info (0x%llx | " | |
1617 | "0x%llx -> 0x%llx)\n", | |
1618 | sdata->dev->name, print_mac(mac, sta->addr), | |
1619 | (unsigned long long) prev_rates, | |
1620 | (unsigned long long) supp_rates, | |
1621 | (unsigned long long) sta->supp_rates[band]); | |
1622 | #endif | |
1623 | } else { | |
1624 | ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid, | |
1625 | mgmt->sa, supp_rates); | |
1626 | } | |
1627 | ||
1628 | rcu_read_unlock(); | |
1629 | } | |
1630 | ||
1631 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, | |
1632 | freq, beacon); | |
1633 | if (!bss) | |
1634 | return; | |
1635 | ||
1636 | /* was just updated in ieee80211_bss_info_update */ | |
1637 | beacon_timestamp = bss->timestamp; | |
1638 | ||
30b89b0f JB |
1639 | /* |
1640 | * In STA mode, the remaining parameters should not be overridden | |
1641 | * by beacons because they're not necessarily accurate there. | |
1642 | */ | |
1643 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
9859b81e | 1644 | bss->last_probe_resp && beacon) { |
3e122be0 | 1645 | ieee80211_rx_bss_put(local, bss); |
30b89b0f JB |
1646 | return; |
1647 | } | |
1648 | ||
9d9bf77d BR |
1649 | /* check if we need to merge IBSS */ |
1650 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
fba4a1e6 | 1651 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d | 1652 | bss->freq == local->oper_channel->center_freq && |
ae6a44e3 EK |
1653 | elems->ssid_len == sdata->u.sta.ssid_len && |
1654 | memcmp(elems->ssid, sdata->u.sta.ssid, | |
1655 | sdata->u.sta.ssid_len) == 0) { | |
9d9bf77d BR |
1656 | if (rx_status->flag & RX_FLAG_TSFT) { |
1657 | /* in order for correct IBSS merging we need mactime | |
1658 | * | |
1659 | * since mactime is defined as the time the first data | |
1660 | * symbol of the frame hits the PHY, and the timestamp | |
1661 | * of the beacon is defined as "the time that the data | |
1662 | * symbol containing the first bit of the timestamp is | |
1663 | * transmitted to the PHY plus the transmitting STA’s | |
1664 | * delays through its local PHY from the MAC-PHY | |
1665 | * interface to its interface with the WM" | |
1666 | * (802.11 11.1.2) - equals the time this bit arrives at | |
1667 | * the receiver - we have to take into account the | |
1668 | * offset between the two. | |
1669 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
1670 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
1671 | */ | |
8e1535d5 | 1672 | int rate = local->hw.wiphy->bands[band]-> |
9d9bf77d BR |
1673 | bitrates[rx_status->rate_idx].bitrate; |
1674 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
1675 | } else if (local && local->ops && local->ops->get_tsf) | |
1676 | /* second best option: get current TSF */ | |
1677 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
1678 | else | |
1679 | /* can't merge without knowing the TSF */ | |
1680 | rx_timestamp = -1LLU; | |
1681 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1682 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
1683 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
1684 | print_mac(mac, mgmt->sa), | |
1685 | print_mac(mac2, mgmt->bssid), | |
1686 | (unsigned long long)rx_timestamp, | |
1687 | (unsigned long long)beacon_timestamp, | |
1688 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
1689 | jiffies); | |
1690 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
1691 | if (beacon_timestamp > rx_timestamp) { | |
576fdeae | 1692 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
f4ea83dd JB |
1693 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
1694 | "local TSF - IBSS merge with BSSID %s\n", | |
f698d856 | 1695 | sdata->dev->name, print_mac(mac, mgmt->bssid)); |
fba4a1e6 | 1696 | #endif |
f698d856 JBG |
1697 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
1698 | ieee80211_ibss_add_sta(sdata, NULL, | |
87291c02 | 1699 | mgmt->bssid, mgmt->sa, |
8e1535d5 | 1700 | supp_rates); |
9d9bf77d BR |
1701 | } |
1702 | } | |
1703 | ||
3e122be0 | 1704 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
1705 | } |
1706 | ||
1707 | ||
f698d856 | 1708 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1709 | struct ieee80211_mgmt *mgmt, |
1710 | size_t len, | |
1711 | struct ieee80211_rx_status *rx_status) | |
1712 | { | |
ae6a44e3 EK |
1713 | size_t baselen; |
1714 | struct ieee802_11_elems elems; | |
9859b81e | 1715 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
ae6a44e3 | 1716 | |
8e7cdbb6 TW |
1717 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
1718 | return; /* ignore ProbeResp to foreign address */ | |
1719 | ||
ae6a44e3 EK |
1720 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1721 | if (baselen > len) | |
1722 | return; | |
1723 | ||
1724 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1725 | &elems); | |
1726 | ||
98c8fccf | 1727 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
1728 | |
1729 | /* direct probe may be part of the association flow */ | |
1730 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, | |
1731 | &ifsta->request)) { | |
1732 | printk(KERN_DEBUG "%s direct probe responded\n", | |
1733 | sdata->dev->name); | |
1734 | ieee80211_authenticate(sdata, ifsta); | |
1735 | } | |
f0706e82 JB |
1736 | } |
1737 | ||
1738 | ||
f698d856 | 1739 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1740 | struct ieee80211_mgmt *mgmt, |
1741 | size_t len, | |
1742 | struct ieee80211_rx_status *rx_status) | |
1743 | { | |
f0706e82 | 1744 | struct ieee80211_if_sta *ifsta; |
f0706e82 JB |
1745 | size_t baselen; |
1746 | struct ieee802_11_elems elems; | |
f698d856 | 1747 | struct ieee80211_local *local = sdata->local; |
d3c990fb | 1748 | struct ieee80211_conf *conf = &local->hw.conf; |
471b3efd | 1749 | u32 changed = 0; |
f0706e82 | 1750 | |
ae6a44e3 EK |
1751 | /* Process beacon from the current BSS */ |
1752 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1753 | if (baselen > len) | |
1754 | return; | |
1755 | ||
1756 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
1757 | ||
98c8fccf | 1758 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
f0706e82 | 1759 | |
51fb61e7 | 1760 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
1761 | return; |
1762 | ifsta = &sdata->u.sta; | |
1763 | ||
d6f2da5b | 1764 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
1765 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
1766 | return; | |
1767 | ||
fe3fa827 JB |
1768 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
1769 | elems.wmm_param_len); | |
1770 | ||
5628221c | 1771 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 1772 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
1773 | else { |
1774 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
1775 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
1776 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
1777 | } | |
f0706e82 | 1778 | |
d3c990fb | 1779 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 1780 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
1781 | struct ieee80211_ht_bss_info bss_info; |
1782 | ||
1783 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1784 | (struct ieee80211_ht_addt_info *) | |
1785 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
1786 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
1787 | &bss_info); | |
d3c990fb RR |
1788 | } |
1789 | ||
471b3efd | 1790 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
1791 | } |
1792 | ||
1793 | ||
f698d856 | 1794 | static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1795 | struct ieee80211_if_sta *ifsta, |
1796 | struct ieee80211_mgmt *mgmt, | |
1797 | size_t len, | |
1798 | struct ieee80211_rx_status *rx_status) | |
1799 | { | |
f698d856 | 1800 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1801 | int tx_last_beacon; |
1802 | struct sk_buff *skb; | |
1803 | struct ieee80211_mgmt *resp; | |
1804 | u8 *pos, *end; | |
0795af57 JP |
1805 | DECLARE_MAC_BUF(mac); |
1806 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1807 | DECLARE_MAC_BUF(mac2); | |
1808 | DECLARE_MAC_BUF(mac3); | |
1809 | #endif | |
f0706e82 | 1810 | |
51fb61e7 | 1811 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
48c2fc59 | 1812 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
f0706e82 JB |
1813 | len < 24 + 2 || !ifsta->probe_resp) |
1814 | return; | |
1815 | ||
1816 | if (local->ops->tx_last_beacon) | |
1817 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
1818 | else | |
1819 | tx_last_beacon = 1; | |
1820 | ||
1821 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
1822 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
1823 | "%s (tx_last_beacon=%d)\n", | |
f698d856 | 1824 | sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), |
0795af57 | 1825 | print_mac(mac3, mgmt->bssid), tx_last_beacon); |
f0706e82 JB |
1826 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
1827 | ||
1828 | if (!tx_last_beacon) | |
1829 | return; | |
1830 | ||
1831 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
1832 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
1833 | return; | |
1834 | ||
1835 | end = ((u8 *) mgmt) + len; | |
1836 | pos = mgmt->u.probe_req.variable; | |
1837 | if (pos[0] != WLAN_EID_SSID || | |
1838 | pos + 2 + pos[1] > end) { | |
f4ea83dd JB |
1839 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
1840 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
1841 | "from %s\n", | |
f698d856 | 1842 | sdata->dev->name, print_mac(mac, mgmt->sa)); |
f4ea83dd | 1843 | #endif |
f0706e82 JB |
1844 | return; |
1845 | } | |
1846 | if (pos[1] != 0 && | |
1847 | (pos[1] != ifsta->ssid_len || | |
1848 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
1849 | /* Ignore ProbeReq for foreign SSID */ | |
1850 | return; | |
1851 | } | |
1852 | ||
1853 | /* Reply with ProbeResp */ | |
0ec0b7ac | 1854 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
1855 | if (!skb) |
1856 | return; | |
1857 | ||
1858 | resp = (struct ieee80211_mgmt *) skb->data; | |
1859 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
1860 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 | 1861 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
f698d856 | 1862 | sdata->dev->name, print_mac(mac, resp->da)); |
f0706e82 | 1863 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
f698d856 | 1864 | ieee80211_sta_tx(sdata, skb, 0); |
f0706e82 JB |
1865 | } |
1866 | ||
f698d856 | 1867 | static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, |
4e20cb29 JB |
1868 | struct ieee80211_if_sta *ifsta, |
1869 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
1870 | size_t len, |
1871 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 1872 | { |
f698d856 | 1873 | struct ieee80211_local *local = sdata->local; |
f709fc69 | 1874 | |
9c80d3dc JB |
1875 | /* all categories we currently handle have action_code */ |
1876 | if (len < IEEE80211_MIN_ACTION_SIZE + 1) | |
9f985b0e RR |
1877 | return; |
1878 | ||
1879 | switch (mgmt->u.action.category) { | |
b6623486 AK |
1880 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
1881 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) | |
1882 | break; | |
5fd12d4d | 1883 | switch (mgmt->u.action.u.measurement.action_code) { |
b6623486 AK |
1884 | case WLAN_ACTION_SPCT_MSR_REQ: |
1885 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
1886 | sizeof(mgmt->u.action.u.measurement))) | |
1887 | break; | |
f698d856 | 1888 | ieee80211_sta_process_measurement_req(sdata, mgmt, len); |
b6623486 AK |
1889 | break; |
1890 | } | |
1891 | break; | |
f709fc69 | 1892 | case PLINK_CATEGORY: |
902acc78 | 1893 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 | 1894 | mesh_rx_plink_frame(sdata, mgmt, len, rx_status); |
f709fc69 | 1895 | break; |
f709fc69 | 1896 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 1897 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 | 1898 | mesh_rx_path_sel_frame(sdata, mgmt, len); |
f709fc69 | 1899 | break; |
9f985b0e RR |
1900 | } |
1901 | } | |
f0706e82 | 1902 | |
f698d856 | 1903 | void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
f0706e82 JB |
1904 | struct ieee80211_rx_status *rx_status) |
1905 | { | |
f698d856 | 1906 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1907 | struct ieee80211_if_sta *ifsta; |
1908 | struct ieee80211_mgmt *mgmt; | |
1909 | u16 fc; | |
1910 | ||
1911 | if (skb->len < 24) | |
1912 | goto fail; | |
1913 | ||
f0706e82 JB |
1914 | ifsta = &sdata->u.sta; |
1915 | ||
1916 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1917 | fc = le16_to_cpu(mgmt->frame_control); | |
1918 | ||
1919 | switch (fc & IEEE80211_FCTL_STYPE) { | |
1920 | case IEEE80211_STYPE_PROBE_REQ: | |
1921 | case IEEE80211_STYPE_PROBE_RESP: | |
1922 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 1923 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
1924 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
1925 | case IEEE80211_STYPE_AUTH: | |
1926 | case IEEE80211_STYPE_ASSOC_RESP: | |
1927 | case IEEE80211_STYPE_REASSOC_RESP: | |
1928 | case IEEE80211_STYPE_DEAUTH: | |
1929 | case IEEE80211_STYPE_DISASSOC: | |
1930 | skb_queue_tail(&ifsta->skb_queue, skb); | |
1931 | queue_work(local->hw.workqueue, &ifsta->work); | |
1932 | return; | |
f0706e82 JB |
1933 | } |
1934 | ||
1935 | fail: | |
1936 | kfree_skb(skb); | |
1937 | } | |
1938 | ||
f698d856 | 1939 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1940 | struct sk_buff *skb) |
1941 | { | |
1942 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
1943 | struct ieee80211_if_sta *ifsta; |
1944 | struct ieee80211_mgmt *mgmt; | |
1945 | u16 fc; | |
1946 | ||
f0706e82 JB |
1947 | ifsta = &sdata->u.sta; |
1948 | ||
1949 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
1950 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1951 | fc = le16_to_cpu(mgmt->frame_control); | |
1952 | ||
1953 | switch (fc & IEEE80211_FCTL_STYPE) { | |
1954 | case IEEE80211_STYPE_PROBE_REQ: | |
f698d856 | 1955 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, |
f0706e82 JB |
1956 | rx_status); |
1957 | break; | |
1958 | case IEEE80211_STYPE_PROBE_RESP: | |
f698d856 | 1959 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
1960 | break; |
1961 | case IEEE80211_STYPE_BEACON: | |
f698d856 | 1962 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
1963 | break; |
1964 | case IEEE80211_STYPE_AUTH: | |
f698d856 | 1965 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
1966 | break; |
1967 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 1968 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
1969 | break; |
1970 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 1971 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
1972 | break; |
1973 | case IEEE80211_STYPE_DEAUTH: | |
f698d856 | 1974 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
1975 | break; |
1976 | case IEEE80211_STYPE_DISASSOC: | |
f698d856 | 1977 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
f0706e82 | 1978 | break; |
9f985b0e | 1979 | case IEEE80211_STYPE_ACTION: |
f698d856 | 1980 | ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 1981 | break; |
f0706e82 JB |
1982 | } |
1983 | ||
1984 | kfree_skb(skb); | |
1985 | } | |
1986 | ||
1987 | ||
f698d856 | 1988 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1989 | { |
f698d856 | 1990 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1991 | int active = 0; |
1992 | struct sta_info *sta; | |
1993 | ||
d0709a65 JB |
1994 | rcu_read_lock(); |
1995 | ||
1996 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
1997 | if (sta->sdata == sdata && | |
f0706e82 JB |
1998 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
1999 | jiffies)) { | |
2000 | active++; | |
2001 | break; | |
2002 | } | |
2003 | } | |
d0709a65 JB |
2004 | |
2005 | rcu_read_unlock(); | |
f0706e82 JB |
2006 | |
2007 | return active; | |
2008 | } | |
2009 | ||
2010 | ||
f698d856 | 2011 | static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time) |
f0706e82 | 2012 | { |
f698d856 | 2013 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2014 | struct sta_info *sta, *tmp; |
be8755e1 | 2015 | LIST_HEAD(tmp_list); |
0795af57 | 2016 | DECLARE_MAC_BUF(mac); |
d0709a65 | 2017 | unsigned long flags; |
f0706e82 | 2018 | |
d0709a65 | 2019 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 2020 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 2021 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
f4ea83dd | 2022 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
0795af57 | 2023 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
f698d856 | 2024 | sdata->dev->name, print_mac(mac, sta->addr)); |
f4ea83dd | 2025 | #endif |
cb585bcc | 2026 | __sta_info_unlink(&sta); |
d0709a65 JB |
2027 | if (sta) |
2028 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 2029 | } |
d0709a65 | 2030 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 2031 | |
d0709a65 JB |
2032 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
2033 | sta_info_destroy(sta); | |
f0706e82 JB |
2034 | } |
2035 | ||
2036 | ||
f698d856 | 2037 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2038 | struct ieee80211_if_sta *ifsta) |
2039 | { | |
2040 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2041 | ||
f698d856 JBG |
2042 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
2043 | if (ieee80211_sta_active_ibss(sdata)) | |
f0706e82 JB |
2044 | return; |
2045 | ||
2046 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
f698d856 JBG |
2047 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
2048 | ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
2049 | } |
2050 | ||
2051 | ||
f709fc69 | 2052 | #ifdef CONFIG_MAC80211_MESH |
f698d856 | 2053 | static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, |
f709fc69 LCC |
2054 | struct ieee80211_if_sta *ifsta) |
2055 | { | |
f709fc69 LCC |
2056 | bool free_plinks; |
2057 | ||
f698d856 JBG |
2058 | ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); |
2059 | mesh_path_expire(sdata); | |
f709fc69 LCC |
2060 | |
2061 | free_plinks = mesh_plink_availables(sdata); | |
2062 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
9d139c81 | 2063 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
2064 | |
2065 | mod_timer(&ifsta->timer, jiffies + | |
2066 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
2067 | } | |
2068 | ||
2069 | ||
f698d856 | 2070 | void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) |
f709fc69 LCC |
2071 | { |
2072 | struct ieee80211_if_sta *ifsta; | |
f709fc69 | 2073 | ifsta = &sdata->u.sta; |
48c2fc59 | 2074 | ifsta->state = IEEE80211_STA_MLME_MESH_UP; |
f709fc69 | 2075 | ieee80211_sta_timer((unsigned long)sdata); |
56a6d13d | 2076 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
2077 | } |
2078 | #endif | |
2079 | ||
2080 | ||
f0706e82 JB |
2081 | void ieee80211_sta_timer(unsigned long data) |
2082 | { | |
60f8b39c JB |
2083 | struct ieee80211_sub_if_data *sdata = |
2084 | (struct ieee80211_sub_if_data *) data; | |
2085 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
2086 | struct ieee80211_local *local = sdata->local; | |
f0706e82 | 2087 | |
60f8b39c JB |
2088 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
2089 | queue_work(local->hw.workqueue, &ifsta->work); | |
f0706e82 JB |
2090 | } |
2091 | ||
f698d856 | 2092 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2093 | struct ieee80211_if_sta *ifsta) |
2094 | { | |
f698d856 | 2095 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2096 | |
2097 | if (local->ops->reset_tsf) { | |
2098 | /* Reset own TSF to allow time synchronization work. */ | |
2099 | local->ops->reset_tsf(local_to_hw(local)); | |
2100 | } | |
2101 | ||
2102 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
2103 | ||
2104 | ||
2105 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
2106 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2107 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2108 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2109 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2110 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
2111 | else | |
2112 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
f0706e82 | 2113 | ifsta->auth_transaction = -1; |
d6f2da5b | 2114 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
6042a3e3 | 2115 | ifsta->assoc_scan_tries = 0; |
9859b81e | 2116 | ifsta->direct_probe_tries = 0; |
6042a3e3 RR |
2117 | ifsta->auth_tries = 0; |
2118 | ifsta->assoc_tries = 0; | |
24e64622 | 2119 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 2120 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
2121 | } |
2122 | ||
2123 | ||
f698d856 | 2124 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2125 | struct ieee80211_if_sta *ifsta) |
2126 | { | |
f698d856 | 2127 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2128 | |
51fb61e7 | 2129 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2130 | return; |
2131 | ||
d6f2da5b | 2132 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3b7ee69d | 2133 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
d6f2da5b | 2134 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
3b7ee69d TW |
2135 | IEEE80211_STA_AUTO_SSID_SEL))) { |
2136 | ||
2137 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) | |
2138 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
2139 | WLAN_REASON_DEAUTH_LEAVING); | |
2140 | ||
f0706e82 JB |
2141 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
2142 | queue_work(local->hw.workqueue, &ifsta->work); | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
2147 | const char *ssid, int ssid_len) | |
2148 | { | |
2149 | int tmp, hidden_ssid; | |
2150 | ||
48225709 MW |
2151 | if (ssid_len == ifsta->ssid_len && |
2152 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
2153 | return 1; |
2154 | ||
d6f2da5b | 2155 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
2156 | return 0; |
2157 | ||
2158 | hidden_ssid = 1; | |
2159 | tmp = ssid_len; | |
2160 | while (tmp--) { | |
2161 | if (ssid[tmp] != '\0') { | |
2162 | hidden_ssid = 0; | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
2168 | return 1; | |
2169 | ||
2170 | if (ssid_len == 1 && ssid[0] == ' ') | |
2171 | return 1; | |
2172 | ||
2173 | return 0; | |
2174 | } | |
2175 | ||
f698d856 | 2176 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2177 | struct ieee80211_if_sta *ifsta) |
2178 | { | |
f698d856 | 2179 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2180 | struct ieee80211_sta_bss *bss; |
8318d78a | 2181 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
2182 | u8 bssid[ETH_ALEN], *pos; |
2183 | int i; | |
167ad6f7 | 2184 | int ret; |
0795af57 | 2185 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
2186 | |
2187 | #if 0 | |
2188 | /* Easier testing, use fixed BSSID. */ | |
2189 | memset(bssid, 0xfe, ETH_ALEN); | |
2190 | #else | |
2191 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
2192 | * own MAC address to make sure that devices that do not have proper | |
2193 | * random number generator get different BSSID. */ | |
2194 | get_random_bytes(bssid, ETH_ALEN); | |
2195 | for (i = 0; i < ETH_ALEN; i++) | |
f698d856 | 2196 | bssid[i] ^= sdata->dev->dev_addr[i]; |
f0706e82 JB |
2197 | bssid[0] &= ~0x01; |
2198 | bssid[0] |= 0x02; | |
2199 | #endif | |
2200 | ||
0795af57 | 2201 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
f698d856 | 2202 | sdata->dev->name, print_mac(mac, bssid)); |
f0706e82 | 2203 | |
98c8fccf | 2204 | bss = ieee80211_rx_bss_add(local, bssid, |
8318d78a | 2205 | local->hw.conf.channel->center_freq, |
cffdd30d | 2206 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
2207 | if (!bss) |
2208 | return -ENOMEM; | |
2209 | ||
8318d78a JB |
2210 | bss->band = local->hw.conf.channel->band; |
2211 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
2212 | |
2213 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 2214 | local->hw.conf.beacon_int = 100; |
f0706e82 | 2215 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
2216 | bss->last_update = jiffies; |
2217 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
2218 | |
2219 | if (sdata->default_key) | |
f0706e82 | 2220 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 2221 | else |
f0706e82 | 2222 | sdata->drop_unencrypted = 0; |
988c0f72 | 2223 | |
8318d78a | 2224 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 2225 | pos = bss->supp_rates; |
8318d78a JB |
2226 | for (i = 0; i < sband->n_bitrates; i++) { |
2227 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
2228 | *pos++ = (u8) (rate / 5); |
2229 | } | |
2230 | ||
f698d856 | 2231 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
3e122be0 | 2232 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2233 | return ret; |
f0706e82 JB |
2234 | } |
2235 | ||
2236 | ||
f698d856 | 2237 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2238 | struct ieee80211_if_sta *ifsta) |
2239 | { | |
f698d856 | 2240 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2241 | struct ieee80211_sta_bss *bss; |
2242 | int found = 0; | |
2243 | u8 bssid[ETH_ALEN]; | |
2244 | int active_ibss; | |
0795af57 JP |
2245 | DECLARE_MAC_BUF(mac); |
2246 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2247 | |
2248 | if (ifsta->ssid_len == 0) | |
2249 | return -EINVAL; | |
2250 | ||
f698d856 | 2251 | active_ibss = ieee80211_sta_active_ibss(sdata); |
f0706e82 JB |
2252 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2253 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
f698d856 | 2254 | sdata->dev->name, active_ibss); |
f0706e82 JB |
2255 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2256 | spin_lock_bh(&local->sta_bss_lock); | |
2257 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2258 | if (ifsta->ssid_len != bss->ssid_len || | |
2259 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
2260 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
2261 | continue; | |
2262 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2263 | printk(KERN_DEBUG " bssid=%s found\n", |
2264 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
2265 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2266 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
2267 | found = 1; | |
2268 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
2269 | break; | |
2270 | } | |
2271 | spin_unlock_bh(&local->sta_bss_lock); | |
2272 | ||
2273 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
6e43829b VK |
2274 | if (found) |
2275 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " | |
2276 | "%s\n", print_mac(mac, bssid), | |
2277 | print_mac(mac2, ifsta->bssid)); | |
f0706e82 | 2278 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
80693ceb DD |
2279 | |
2280 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
167ad6f7 | 2281 | int ret; |
80693ceb DD |
2282 | int search_freq; |
2283 | ||
2284 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) | |
2285 | search_freq = bss->freq; | |
2286 | else | |
2287 | search_freq = local->hw.conf.channel->center_freq; | |
2288 | ||
f698d856 | 2289 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
80693ceb DD |
2290 | ifsta->ssid, ifsta->ssid_len); |
2291 | if (!bss) | |
2292 | goto dont_join; | |
2293 | ||
0795af57 | 2294 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 2295 | " based on configured SSID\n", |
f698d856 JBG |
2296 | sdata->dev->name, print_mac(mac, bssid)); |
2297 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); | |
3e122be0 | 2298 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2299 | return ret; |
f0706e82 | 2300 | } |
80693ceb DD |
2301 | |
2302 | dont_join: | |
f0706e82 JB |
2303 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2304 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
2305 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2306 | ||
2307 | /* Selected IBSS not found in current scan results - try to scan */ | |
48c2fc59 | 2308 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
f698d856 | 2309 | !ieee80211_sta_active_ibss(sdata)) { |
f0706e82 JB |
2310 | mod_timer(&ifsta->timer, jiffies + |
2311 | IEEE80211_IBSS_MERGE_INTERVAL); | |
2312 | } else if (time_after(jiffies, local->last_scan_completed + | |
2313 | IEEE80211_SCAN_INTERVAL)) { | |
2314 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
f698d856 JBG |
2315 | "join\n", sdata->dev->name); |
2316 | return ieee80211_sta_req_scan(sdata, ifsta->ssid, | |
f0706e82 | 2317 | ifsta->ssid_len); |
48c2fc59 | 2318 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
f0706e82 JB |
2319 | int interval = IEEE80211_SCAN_INTERVAL; |
2320 | ||
2321 | if (time_after(jiffies, ifsta->ibss_join_req + | |
2322 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 2323 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
2324 | (!(local->oper_channel->flags & |
2325 | IEEE80211_CHAN_NO_IBSS))) | |
f698d856 | 2326 | return ieee80211_sta_create_ibss(sdata, ifsta); |
d6f2da5b | 2327 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a | 2328 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
f698d856 | 2329 | " %d MHz\n", sdata->dev->name, |
8318d78a | 2330 | local->hw.conf.channel->center_freq); |
f0706e82 JB |
2331 | } |
2332 | ||
2333 | /* No IBSS found - decrease scan interval and continue | |
2334 | * scanning. */ | |
2335 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
2336 | } | |
2337 | ||
48c2fc59 | 2338 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f0706e82 JB |
2339 | mod_timer(&ifsta->timer, jiffies + interval); |
2340 | return 0; | |
2341 | } | |
2342 | ||
2343 | return 0; | |
2344 | } | |
2345 | ||
2346 | ||
f698d856 | 2347 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
f0706e82 | 2348 | { |
f0706e82 | 2349 | struct ieee80211_if_sta *ifsta; |
9d139c81 | 2350 | int res; |
f0706e82 JB |
2351 | |
2352 | if (len > IEEE80211_MAX_SSID_LEN) | |
2353 | return -EINVAL; | |
2354 | ||
f0706e82 JB |
2355 | ifsta = &sdata->u.sta; |
2356 | ||
9d139c81 JB |
2357 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
2358 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); | |
2359 | memcpy(ifsta->ssid, ssid, len); | |
2360 | ifsta->ssid_len = len; | |
d6f2da5b | 2361 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
9d139c81 JB |
2362 | |
2363 | res = 0; | |
2364 | /* | |
2365 | * Hack! MLME code needs to be cleaned up to have different | |
2366 | * entry points for configuration and internal selection change | |
2367 | */ | |
2368 | if (netif_running(sdata->dev)) | |
2369 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); | |
2370 | if (res) { | |
2371 | printk(KERN_DEBUG "%s: Failed to config new SSID to " | |
f698d856 | 2372 | "the low-level driver\n", sdata->dev->name); |
9d139c81 JB |
2373 | return res; |
2374 | } | |
2375 | } | |
f0706e82 | 2376 | |
d6f2da5b JS |
2377 | if (len) |
2378 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
2379 | else | |
2380 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
9d139c81 | 2381 | |
51fb61e7 | 2382 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 2383 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 | 2384 | ifsta->ibss_join_req = jiffies; |
48c2fc59 | 2385 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f698d856 | 2386 | return ieee80211_sta_find_ibss(sdata, ifsta); |
f0706e82 | 2387 | } |
9d139c81 | 2388 | |
f0706e82 JB |
2389 | return 0; |
2390 | } | |
2391 | ||
2392 | ||
f698d856 | 2393 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
f0706e82 | 2394 | { |
f0706e82 JB |
2395 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2396 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
2397 | *len = ifsta->ssid_len; | |
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | ||
f698d856 | 2402 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
f0706e82 | 2403 | { |
f0706e82 JB |
2404 | struct ieee80211_if_sta *ifsta; |
2405 | int res; | |
2406 | ||
f0706e82 JB |
2407 | ifsta = &sdata->u.sta; |
2408 | ||
2409 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
2410 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
9d139c81 JB |
2411 | res = 0; |
2412 | /* | |
2413 | * Hack! See also ieee80211_sta_set_ssid. | |
2414 | */ | |
2415 | if (netif_running(sdata->dev)) | |
2416 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); | |
f0706e82 JB |
2417 | if (res) { |
2418 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
f698d856 | 2419 | "the low-level driver\n", sdata->dev->name); |
f0706e82 JB |
2420 | return res; |
2421 | } | |
2422 | } | |
2423 | ||
d6f2da5b JS |
2424 | if (is_valid_ether_addr(bssid)) |
2425 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 2426 | else |
d6f2da5b JS |
2427 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
2428 | ||
f0706e82 JB |
2429 | return 0; |
2430 | } | |
2431 | ||
2432 | ||
f698d856 | 2433 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
f0706e82 | 2434 | { |
f0706e82 | 2435 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
988c0f72 | 2436 | |
f0706e82 JB |
2437 | kfree(ifsta->extra_ie); |
2438 | if (len == 0) { | |
2439 | ifsta->extra_ie = NULL; | |
2440 | ifsta->extra_ie_len = 0; | |
2441 | return 0; | |
2442 | } | |
2443 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
2444 | if (!ifsta->extra_ie) { | |
2445 | ifsta->extra_ie_len = 0; | |
2446 | return -ENOMEM; | |
2447 | } | |
2448 | memcpy(ifsta->extra_ie, ie, len); | |
2449 | ifsta->extra_ie_len = len; | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | ||
f698d856 | 2454 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
988c0f72 | 2455 | struct sk_buff *skb, u8 *bssid, |
87291c02 | 2456 | u8 *addr, u64 supp_rates) |
f0706e82 | 2457 | { |
f698d856 | 2458 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2459 | struct sta_info *sta; |
0795af57 | 2460 | DECLARE_MAC_BUF(mac); |
87291c02 | 2461 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
2462 | |
2463 | /* TODO: Could consider removing the least recently used entry and | |
2464 | * allow new one to be added. */ | |
2465 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
2466 | if (net_ratelimit()) { | |
2467 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
f698d856 | 2468 | "entry %s\n", sdata->dev->name, print_mac(mac, addr)); |
f0706e82 JB |
2469 | } |
2470 | return NULL; | |
2471 | } | |
2472 | ||
1e188637 | 2473 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
87291c02 VK |
2474 | return NULL; |
2475 | ||
f4ea83dd | 2476 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
0795af57 | 2477 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
f698d856 | 2478 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name); |
f4ea83dd | 2479 | #endif |
f0706e82 | 2480 | |
73651ee6 JB |
2481 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
2482 | if (!sta) | |
f0706e82 JB |
2483 | return NULL; |
2484 | ||
07346f81 | 2485 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 2486 | |
8e1535d5 EG |
2487 | /* make sure mandatory rates are always added */ |
2488 | sta->supp_rates[band] = supp_rates | | |
2489 | ieee80211_sta_get_mandatory_rates(local, band); | |
f0706e82 JB |
2490 | |
2491 | rate_control_rate_init(sta, local); | |
2492 | ||
93e5deb1 | 2493 | if (sta_info_insert(sta)) |
73651ee6 | 2494 | return NULL; |
73651ee6 | 2495 | |
d0709a65 | 2496 | return sta; |
f0706e82 JB |
2497 | } |
2498 | ||
2499 | ||
60f8b39c JB |
2500 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
2501 | struct ieee80211_if_sta *ifsta) | |
2502 | { | |
2503 | struct ieee80211_local *local = sdata->local; | |
2504 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
2505 | int top_rssi = 0, freq; | |
2506 | ||
2507 | spin_lock_bh(&local->sta_bss_lock); | |
2508 | freq = local->oper_channel->center_freq; | |
2509 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2510 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
2511 | continue; | |
2512 | ||
2513 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
2514 | IEEE80211_STA_AUTO_BSSID_SEL | | |
2515 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
2516 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
2517 | !!sdata->default_key)) | |
2518 | continue; | |
2519 | ||
2520 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && | |
2521 | bss->freq != freq) | |
2522 | continue; | |
2523 | ||
2524 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && | |
2525 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) | |
2526 | continue; | |
2527 | ||
2528 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && | |
2529 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) | |
2530 | continue; | |
2531 | ||
2532 | if (!selected || top_rssi < bss->signal) { | |
2533 | selected = bss; | |
2534 | top_rssi = bss->signal; | |
2535 | } | |
2536 | } | |
2537 | if (selected) | |
2538 | atomic_inc(&selected->users); | |
2539 | spin_unlock_bh(&local->sta_bss_lock); | |
2540 | ||
2541 | if (selected) { | |
2542 | ieee80211_set_freq(sdata, selected->freq); | |
2543 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) | |
2544 | ieee80211_sta_set_ssid(sdata, selected->ssid, | |
2545 | selected->ssid_len); | |
2546 | ieee80211_sta_set_bssid(sdata, selected->bssid); | |
b079ada7 | 2547 | ieee80211_sta_def_wmm_params(sdata, selected); |
60f8b39c JB |
2548 | |
2549 | /* Send out direct probe if no probe resp was received or | |
2550 | * the one we have is outdated | |
2551 | */ | |
2552 | if (!selected->last_probe_resp || | |
2553 | time_after(jiffies, selected->last_probe_resp | |
2554 | + IEEE80211_SCAN_RESULT_EXPIRE)) | |
2555 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; | |
2556 | else | |
2557 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2558 | ||
2559 | ieee80211_rx_bss_put(local, selected); | |
2560 | ieee80211_sta_reset_auth(sdata, ifsta); | |
2561 | return 0; | |
2562 | } else { | |
2563 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { | |
2564 | ifsta->assoc_scan_tries++; | |
2565 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) | |
2566 | ieee80211_sta_start_scan(sdata, NULL, 0); | |
2567 | else | |
2568 | ieee80211_sta_start_scan(sdata, ifsta->ssid, | |
2569 | ifsta->ssid_len); | |
2570 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2571 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
2572 | } else | |
2573 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
2574 | } | |
2575 | return -1; | |
2576 | } | |
2577 | ||
2578 | ||
f698d856 | 2579 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2580 | { |
f0706e82 JB |
2581 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2582 | ||
f4ea83dd | 2583 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 2584 | sdata->dev->name, reason); |
f0706e82 | 2585 | |
51fb61e7 JB |
2586 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
2587 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
2588 | return -EINVAL; |
2589 | ||
aa458d17 | 2590 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
f0706e82 JB |
2591 | return 0; |
2592 | } | |
2593 | ||
2594 | ||
f698d856 | 2595 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2596 | { |
f0706e82 JB |
2597 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2598 | ||
f4ea83dd | 2599 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 2600 | sdata->dev->name, reason); |
f0706e82 | 2601 | |
51fb61e7 | 2602 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2603 | return -EINVAL; |
2604 | ||
d6f2da5b | 2605 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
2606 | return -1; |
2607 | ||
aa458d17 | 2608 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
f0706e82 JB |
2609 | return 0; |
2610 | } | |
84363e6e MA |
2611 | |
2612 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
2613 | enum ieee80211_notification_types notif_type) | |
2614 | { | |
2615 | struct ieee80211_local *local = hw_to_local(hw); | |
2616 | struct ieee80211_sub_if_data *sdata; | |
2617 | ||
2618 | switch (notif_type) { | |
2619 | case IEEE80211_NOTIFY_RE_ASSOC: | |
2620 | rcu_read_lock(); | |
2621 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
3e122be0 JB |
2622 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
2623 | continue; | |
84363e6e | 2624 | |
f698d856 | 2625 | ieee80211_sta_req_auth(sdata, &sdata->u.sta); |
84363e6e MA |
2626 | } |
2627 | rcu_read_unlock(); | |
2628 | break; | |
2629 | } | |
2630 | } | |
2631 | EXPORT_SYMBOL(ieee80211_notify_mac); | |
60f8b39c JB |
2632 | |
2633 | void ieee80211_sta_work(struct work_struct *work) | |
2634 | { | |
2635 | struct ieee80211_sub_if_data *sdata = | |
2636 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
2637 | struct ieee80211_local *local = sdata->local; | |
2638 | struct ieee80211_if_sta *ifsta; | |
2639 | struct sk_buff *skb; | |
2640 | ||
2641 | if (!netif_running(sdata->dev)) | |
2642 | return; | |
2643 | ||
2644 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
2645 | return; | |
2646 | ||
2647 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && | |
2648 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2649 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) | |
2650 | return; | |
2651 | ifsta = &sdata->u.sta; | |
2652 | ||
2653 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
2654 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
2655 | ||
2656 | #ifdef CONFIG_MAC80211_MESH | |
2657 | if (ifsta->preq_queue_len && | |
2658 | time_after(jiffies, | |
2659 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
2660 | mesh_path_start_discovery(sdata); | |
2661 | #endif | |
2662 | ||
2663 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && | |
2664 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
2665 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && | |
2666 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0fe8b33 | 2667 | ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len); |
60f8b39c JB |
2668 | return; |
2669 | } | |
2670 | ||
2671 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
2672 | if (ieee80211_sta_config_auth(sdata, ifsta)) | |
2673 | return; | |
2674 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2675 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
2676 | return; | |
2677 | ||
2678 | switch (ifsta->state) { | |
2679 | case IEEE80211_STA_MLME_DISABLED: | |
2680 | break; | |
2681 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
2682 | ieee80211_direct_probe(sdata, ifsta); | |
2683 | break; | |
2684 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
2685 | ieee80211_authenticate(sdata, ifsta); | |
2686 | break; | |
2687 | case IEEE80211_STA_MLME_ASSOCIATE: | |
2688 | ieee80211_associate(sdata, ifsta); | |
2689 | break; | |
2690 | case IEEE80211_STA_MLME_ASSOCIATED: | |
2691 | ieee80211_associated(sdata, ifsta); | |
2692 | break; | |
2693 | case IEEE80211_STA_MLME_IBSS_SEARCH: | |
2694 | ieee80211_sta_find_ibss(sdata, ifsta); | |
2695 | break; | |
2696 | case IEEE80211_STA_MLME_IBSS_JOINED: | |
2697 | ieee80211_sta_merge_ibss(sdata, ifsta); | |
2698 | break; | |
2699 | #ifdef CONFIG_MAC80211_MESH | |
2700 | case IEEE80211_STA_MLME_MESH_UP: | |
2701 | ieee80211_mesh_housekeeping(sdata, ifsta); | |
2702 | break; | |
2703 | #endif | |
2704 | default: | |
2705 | WARN_ON(1); | |
2706 | break; | |
2707 | } | |
2708 | ||
2709 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
2710 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
2711 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
2712 | ||
2713 | ieee80211_set_disassoc(sdata, ifsta, false, true, | |
2714 | WLAN_REASON_UNSPECIFIED); | |
2715 | } | |
2716 | } | |
0a51b27e JB |
2717 | |
2718 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
2719 | { | |
2720 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
2721 | struct ieee80211_if_sta *ifsta; | |
2722 | ||
2723 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
2724 | ifsta = &sdata->u.sta; | |
2725 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || | |
2726 | (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && | |
2727 | !ieee80211_sta_active_ibss(sdata))) | |
2728 | ieee80211_sta_find_ibss(sdata, ifsta); | |
2729 | } | |
2730 | } |