Commit | Line | Data |
---|---|---|
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 | ||
14 | /* TODO: | |
f0706e82 JB |
15 | * order BSS list by RSSI(?) ("quality of AP") |
16 | * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, | |
17 | * SSID) | |
18 | */ | |
5b323edb | 19 | #include <linux/delay.h> |
f0706e82 JB |
20 | #include <linux/if_ether.h> |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/wireless.h> | |
25 | #include <linux/random.h> | |
26 | #include <linux/etherdevice.h> | |
f0706e82 JB |
27 | #include <net/iw_handler.h> |
28 | #include <asm/types.h> | |
f0706e82 JB |
29 | |
30 | #include <net/mac80211.h> | |
31 | #include "ieee80211_i.h" | |
32 | #include "ieee80211_rate.h" | |
47f0c502 | 33 | #include "ieee80211_led.h" |
f0706e82 JB |
34 | |
35 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) | |
36 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
37 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
39 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
40 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) | |
41 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
42 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
43 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
44 | #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ) | |
45 | ||
46 | #define IEEE80211_PROBE_DELAY (HZ / 33) | |
47 | #define IEEE80211_CHANNEL_TIME (HZ / 33) | |
48 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) | |
49 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
50 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) | |
51 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
52 | ||
53 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
54 | ||
55 | ||
56 | #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype) | |
57 | ||
58 | #define ERP_INFO_USE_PROTECTION BIT(1) | |
59 | ||
9f985b0e RR |
60 | /* mgmt header + 1 byte action code */ |
61 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) | |
62 | ||
63 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
64 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
65 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
688b88a4 RR |
66 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
67 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
9f985b0e | 68 | |
07db2183 RR |
69 | /* next values represent the buffer size for A-MPDU frame. |
70 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ | |
71 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
72 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
73 | ||
f0706e82 JB |
74 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, |
75 | u8 *ssid, size_t ssid_len); | |
76 | static struct ieee80211_sta_bss * | |
cffdd30d JL |
77 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, |
78 | u8 *ssid, u8 ssid_len); | |
f0706e82 JB |
79 | static void ieee80211_rx_bss_put(struct net_device *dev, |
80 | struct ieee80211_sta_bss *bss); | |
81 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
82 | struct ieee80211_if_sta *ifsta); | |
83 | static int ieee80211_sta_wep_configured(struct net_device *dev); | |
84 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
85 | u8 *ssid, size_t ssid_len); | |
86 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
87 | struct ieee80211_if_sta *ifsta); | |
88 | ||
89 | ||
90 | /* Parsed Information Elements */ | |
91 | struct ieee802_11_elems { | |
5558235c | 92 | /* pointers to IEs */ |
f0706e82 | 93 | u8 *ssid; |
f0706e82 | 94 | u8 *supp_rates; |
f0706e82 | 95 | u8 *fh_params; |
f0706e82 | 96 | u8 *ds_params; |
f0706e82 | 97 | u8 *cf_params; |
f0706e82 | 98 | u8 *tim; |
f0706e82 | 99 | u8 *ibss_params; |
f0706e82 | 100 | u8 *challenge; |
f0706e82 | 101 | u8 *wpa; |
f0706e82 | 102 | u8 *rsn; |
f0706e82 | 103 | u8 *erp_info; |
f0706e82 | 104 | u8 *ext_supp_rates; |
f0706e82 | 105 | u8 *wmm_info; |
f0706e82 | 106 | u8 *wmm_param; |
c7153508 RR |
107 | u8 *ht_cap_elem; |
108 | u8 *ht_info_elem; | |
5558235c JB |
109 | /* length of them, respectively */ |
110 | u8 ssid_len; | |
111 | u8 supp_rates_len; | |
112 | u8 fh_params_len; | |
113 | u8 ds_params_len; | |
114 | u8 cf_params_len; | |
115 | u8 tim_len; | |
116 | u8 ibss_params_len; | |
117 | u8 challenge_len; | |
118 | u8 wpa_len; | |
119 | u8 rsn_len; | |
120 | u8 erp_info_len; | |
121 | u8 ext_supp_rates_len; | |
122 | u8 wmm_info_len; | |
f0706e82 | 123 | u8 wmm_param_len; |
c7153508 RR |
124 | u8 ht_cap_elem_len; |
125 | u8 ht_info_elem_len; | |
f0706e82 JB |
126 | }; |
127 | ||
67a4cce4 JL |
128 | static void ieee802_11_parse_elems(u8 *start, size_t len, |
129 | struct ieee802_11_elems *elems) | |
f0706e82 JB |
130 | { |
131 | size_t left = len; | |
132 | u8 *pos = start; | |
f0706e82 JB |
133 | |
134 | memset(elems, 0, sizeof(*elems)); | |
135 | ||
136 | while (left >= 2) { | |
137 | u8 id, elen; | |
138 | ||
139 | id = *pos++; | |
140 | elen = *pos++; | |
141 | left -= 2; | |
142 | ||
67a4cce4 JL |
143 | if (elen > left) |
144 | return; | |
f0706e82 JB |
145 | |
146 | switch (id) { | |
147 | case WLAN_EID_SSID: | |
148 | elems->ssid = pos; | |
149 | elems->ssid_len = elen; | |
150 | break; | |
151 | case WLAN_EID_SUPP_RATES: | |
152 | elems->supp_rates = pos; | |
153 | elems->supp_rates_len = elen; | |
154 | break; | |
155 | case WLAN_EID_FH_PARAMS: | |
156 | elems->fh_params = pos; | |
157 | elems->fh_params_len = elen; | |
158 | break; | |
159 | case WLAN_EID_DS_PARAMS: | |
160 | elems->ds_params = pos; | |
161 | elems->ds_params_len = elen; | |
162 | break; | |
163 | case WLAN_EID_CF_PARAMS: | |
164 | elems->cf_params = pos; | |
165 | elems->cf_params_len = elen; | |
166 | break; | |
167 | case WLAN_EID_TIM: | |
168 | elems->tim = pos; | |
169 | elems->tim_len = elen; | |
170 | break; | |
171 | case WLAN_EID_IBSS_PARAMS: | |
172 | elems->ibss_params = pos; | |
173 | elems->ibss_params_len = elen; | |
174 | break; | |
175 | case WLAN_EID_CHALLENGE: | |
176 | elems->challenge = pos; | |
177 | elems->challenge_len = elen; | |
178 | break; | |
179 | case WLAN_EID_WPA: | |
180 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
181 | pos[2] == 0xf2) { | |
182 | /* Microsoft OUI (00:50:F2) */ | |
183 | if (pos[3] == 1) { | |
184 | /* OUI Type 1 - WPA IE */ | |
185 | elems->wpa = pos; | |
186 | elems->wpa_len = elen; | |
187 | } else if (elen >= 5 && pos[3] == 2) { | |
188 | if (pos[4] == 0) { | |
189 | elems->wmm_info = pos; | |
190 | elems->wmm_info_len = elen; | |
191 | } else if (pos[4] == 1) { | |
192 | elems->wmm_param = pos; | |
193 | elems->wmm_param_len = elen; | |
194 | } | |
195 | } | |
196 | } | |
197 | break; | |
198 | case WLAN_EID_RSN: | |
199 | elems->rsn = pos; | |
200 | elems->rsn_len = elen; | |
201 | break; | |
202 | case WLAN_EID_ERP_INFO: | |
203 | elems->erp_info = pos; | |
204 | elems->erp_info_len = elen; | |
205 | break; | |
206 | case WLAN_EID_EXT_SUPP_RATES: | |
207 | elems->ext_supp_rates = pos; | |
208 | elems->ext_supp_rates_len = elen; | |
209 | break; | |
c7153508 RR |
210 | case WLAN_EID_HT_CAPABILITY: |
211 | elems->ht_cap_elem = pos; | |
212 | elems->ht_cap_elem_len = elen; | |
213 | break; | |
214 | case WLAN_EID_HT_EXTRA_INFO: | |
215 | elems->ht_info_elem = pos; | |
216 | elems->ht_info_elem_len = elen; | |
217 | break; | |
f0706e82 | 218 | default: |
f0706e82 JB |
219 | break; |
220 | } | |
221 | ||
222 | left -= elen; | |
223 | pos += elen; | |
224 | } | |
f0706e82 JB |
225 | } |
226 | ||
227 | ||
f0706e82 JB |
228 | static int ecw2cw(int ecw) |
229 | { | |
230 | int cw = 1; | |
231 | while (ecw > 0) { | |
232 | cw <<= 1; | |
233 | ecw--; | |
234 | } | |
235 | return cw - 1; | |
236 | } | |
237 | ||
f0706e82 JB |
238 | static void ieee80211_sta_wmm_params(struct net_device *dev, |
239 | struct ieee80211_if_sta *ifsta, | |
240 | u8 *wmm_param, size_t wmm_param_len) | |
241 | { | |
242 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
243 | struct ieee80211_tx_queue_params params; | |
244 | size_t left; | |
245 | int count; | |
246 | u8 *pos; | |
247 | ||
248 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) | |
249 | return; | |
250 | count = wmm_param[6] & 0x0f; | |
251 | if (count == ifsta->wmm_last_param_set) | |
252 | return; | |
253 | ifsta->wmm_last_param_set = count; | |
254 | ||
255 | pos = wmm_param + 8; | |
256 | left = wmm_param_len - 8; | |
257 | ||
258 | memset(¶ms, 0, sizeof(params)); | |
259 | ||
260 | if (!local->ops->conf_tx) | |
261 | return; | |
262 | ||
263 | local->wmm_acm = 0; | |
264 | for (; left >= 4; left -= 4, pos += 4) { | |
265 | int aci = (pos[0] >> 5) & 0x03; | |
266 | int acm = (pos[0] >> 4) & 0x01; | |
267 | int queue; | |
268 | ||
269 | switch (aci) { | |
270 | case 1: | |
271 | queue = IEEE80211_TX_QUEUE_DATA3; | |
272 | if (acm) { | |
273 | local->wmm_acm |= BIT(0) | BIT(3); | |
274 | } | |
275 | break; | |
276 | case 2: | |
277 | queue = IEEE80211_TX_QUEUE_DATA1; | |
278 | if (acm) { | |
279 | local->wmm_acm |= BIT(4) | BIT(5); | |
280 | } | |
281 | break; | |
282 | case 3: | |
283 | queue = IEEE80211_TX_QUEUE_DATA0; | |
284 | if (acm) { | |
285 | local->wmm_acm |= BIT(6) | BIT(7); | |
286 | } | |
287 | break; | |
288 | case 0: | |
289 | default: | |
290 | queue = IEEE80211_TX_QUEUE_DATA2; | |
291 | if (acm) { | |
292 | local->wmm_acm |= BIT(1) | BIT(2); | |
293 | } | |
294 | break; | |
295 | } | |
296 | ||
297 | params.aifs = pos[0] & 0x0f; | |
298 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
299 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
300 | /* TXOP is in units of 32 usec; burst_time in 0.1 ms */ | |
301 | params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100; | |
302 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " | |
303 | "cWmin=%d cWmax=%d burst=%d\n", | |
304 | dev->name, queue, aci, acm, params.aifs, params.cw_min, | |
305 | params.cw_max, params.burst_time); | |
306 | /* TODO: handle ACM (block TX, fallback to next lowest allowed | |
307 | * AC for now) */ | |
308 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
309 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
310 | "parameters for queue %d\n", dev->name, queue); | |
311 | } | |
312 | } | |
313 | } | |
314 | ||
216bce90 VK |
315 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
316 | bool use_protection, | |
317 | bool use_short_preamble) | |
5628221c | 318 | { |
471b3efd | 319 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
5628221c | 320 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 321 | DECLARE_MAC_BUF(mac); |
471b3efd | 322 | u32 changed = 0; |
5628221c | 323 | |
471b3efd | 324 | if (use_protection != bss_conf->use_cts_prot) { |
5628221c DD |
325 | if (net_ratelimit()) { |
326 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 327 | "%s)\n", |
471b3efd | 328 | sdata->dev->name, |
5628221c | 329 | use_protection ? "enabled" : "disabled", |
0795af57 | 330 | print_mac(mac, ifsta->bssid)); |
5628221c | 331 | } |
471b3efd JB |
332 | bss_conf->use_cts_prot = use_protection; |
333 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 334 | } |
7e9ed188 | 335 | |
d43c7b37 | 336 | if (use_short_preamble != bss_conf->use_short_preamble) { |
7e9ed188 DD |
337 | if (net_ratelimit()) { |
338 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 339 | " (BSSID=%s)\n", |
471b3efd | 340 | sdata->dev->name, |
d43c7b37 | 341 | use_short_preamble ? "short" : "long", |
0795af57 | 342 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 343 | } |
d43c7b37 | 344 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 345 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 346 | } |
d9430a32 | 347 | |
471b3efd | 348 | return changed; |
5628221c DD |
349 | } |
350 | ||
216bce90 VK |
351 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
352 | u8 erp_value) | |
353 | { | |
354 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
355 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
356 | ||
357 | return ieee80211_handle_protect_preamb(sdata, | |
358 | use_protection, use_short_preamble); | |
359 | } | |
360 | ||
361 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
362 | struct ieee80211_sta_bss *bss) | |
363 | { | |
364 | u32 changed = 0; | |
365 | ||
366 | if (bss->has_erp_value) | |
367 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
368 | else { | |
369 | u16 capab = bss->capability; | |
370 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
371 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
372 | } | |
373 | ||
374 | return changed; | |
375 | } | |
376 | ||
c7153508 RR |
377 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
378 | struct ieee80211_ht_info *ht_info) | |
379 | { | |
380 | ||
381 | if (ht_info == NULL) | |
382 | return -EINVAL; | |
383 | ||
384 | memset(ht_info, 0, sizeof(*ht_info)); | |
385 | ||
386 | if (ht_cap_ie) { | |
387 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
388 | ||
389 | ht_info->ht_supported = 1; | |
390 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
391 | ht_info->ampdu_factor = | |
392 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
393 | ht_info->ampdu_density = | |
394 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
395 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
396 | } else | |
397 | ht_info->ht_supported = 0; | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
403 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
404 | struct ieee80211_ht_bss_info *bss_info) | |
405 | { | |
406 | if (bss_info == NULL) | |
407 | return -EINVAL; | |
408 | ||
409 | memset(bss_info, 0, sizeof(*bss_info)); | |
410 | ||
411 | if (ht_add_info_ie) { | |
412 | u16 op_mode; | |
413 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
414 | ||
415 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
416 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
417 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
5628221c | 422 | |
f0706e82 JB |
423 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
424 | struct ieee80211_if_sta *ifsta) | |
425 | { | |
426 | char *buf; | |
427 | size_t len; | |
428 | int i; | |
429 | union iwreq_data wrqu; | |
430 | ||
431 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) | |
432 | return; | |
433 | ||
434 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + | |
0ec0b7ac | 435 | ifsta->assocresp_ies_len), GFP_KERNEL); |
f0706e82 JB |
436 | if (!buf) |
437 | return; | |
438 | ||
439 | len = sprintf(buf, "ASSOCINFO("); | |
440 | if (ifsta->assocreq_ies) { | |
441 | len += sprintf(buf + len, "ReqIEs="); | |
442 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { | |
443 | len += sprintf(buf + len, "%02x", | |
444 | ifsta->assocreq_ies[i]); | |
445 | } | |
446 | } | |
447 | if (ifsta->assocresp_ies) { | |
448 | if (ifsta->assocreq_ies) | |
449 | len += sprintf(buf + len, " "); | |
450 | len += sprintf(buf + len, "RespIEs="); | |
451 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
452 | len += sprintf(buf + len, "%02x", | |
453 | ifsta->assocresp_ies[i]); | |
454 | } | |
455 | } | |
456 | len += sprintf(buf + len, ")"); | |
457 | ||
458 | if (len > IW_CUSTOM_MAX) { | |
459 | len = sprintf(buf, "ASSOCRESPIE="); | |
460 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
461 | len += sprintf(buf + len, "%02x", | |
462 | ifsta->assocresp_ies[i]); | |
463 | } | |
464 | } | |
465 | ||
466 | memset(&wrqu, 0, sizeof(wrqu)); | |
467 | wrqu.data.length = len; | |
468 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
469 | ||
470 | kfree(buf); | |
471 | } | |
472 | ||
473 | ||
474 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 475 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 476 | bool assoc) |
f0706e82 | 477 | { |
471b3efd JB |
478 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
479 | struct ieee80211_local *local = sdata->local; | |
f0706e82 | 480 | union iwreq_data wrqu; |
471b3efd | 481 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 482 | |
f0706e82 | 483 | if (assoc) { |
5628221c | 484 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
485 | |
486 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
487 | ||
51fb61e7 | 488 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 489 | return; |
5628221c | 490 | |
65c107ab | 491 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
cffdd30d JL |
492 | local->hw.conf.channel, |
493 | ifsta->ssid, ifsta->ssid_len); | |
5628221c | 494 | if (bss) { |
216bce90 | 495 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
5628221c DD |
496 | ieee80211_rx_bss_put(dev, bss); |
497 | } | |
498 | ||
f0706e82 | 499 | netif_carrier_on(dev); |
d6f2da5b | 500 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
501 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
502 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
503 | ieee80211_sta_send_associnfo(dev, ifsta); | |
504 | } else { | |
d6f2da5b JS |
505 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
506 | ||
f0706e82 | 507 | netif_carrier_off(dev); |
d9430a32 | 508 | ieee80211_reset_erp_info(dev); |
f0706e82 JB |
509 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
510 | } | |
511 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
512 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
513 | ifsta->last_probe = jiffies; | |
47f0c502 | 514 | ieee80211_led_assoc(local, assoc); |
471b3efd JB |
515 | |
516 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 JB |
517 | } |
518 | ||
519 | static void ieee80211_set_disassoc(struct net_device *dev, | |
520 | struct ieee80211_if_sta *ifsta, int deauth) | |
521 | { | |
522 | if (deauth) | |
523 | ifsta->auth_tries = 0; | |
524 | ifsta->assoc_tries = 0; | |
525 | ieee80211_set_associated(dev, ifsta, 0); | |
526 | } | |
527 | ||
528 | static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, | |
529 | int encrypt) | |
530 | { | |
531 | struct ieee80211_sub_if_data *sdata; | |
532 | struct ieee80211_tx_packet_data *pkt_data; | |
533 | ||
534 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
535 | skb->dev = sdata->local->mdev; | |
536 | skb_set_mac_header(skb, 0); | |
537 | skb_set_network_header(skb, 0); | |
538 | skb_set_transport_header(skb, 0); | |
539 | ||
540 | pkt_data = (struct ieee80211_tx_packet_data *) skb->cb; | |
541 | memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data)); | |
542 | pkt_data->ifindex = sdata->dev->ifindex; | |
e8bf9649 JS |
543 | if (!encrypt) |
544 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
f0706e82 JB |
545 | |
546 | dev_queue_xmit(skb); | |
547 | } | |
548 | ||
549 | ||
550 | static void ieee80211_send_auth(struct net_device *dev, | |
551 | struct ieee80211_if_sta *ifsta, | |
552 | int transaction, u8 *extra, size_t extra_len, | |
553 | int encrypt) | |
554 | { | |
555 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
556 | struct sk_buff *skb; | |
557 | struct ieee80211_mgmt *mgmt; | |
558 | ||
559 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
560 | sizeof(*mgmt) + 6 + extra_len); | |
561 | if (!skb) { | |
562 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
563 | "frame\n", dev->name); | |
564 | return; | |
565 | } | |
566 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
567 | ||
568 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
569 | memset(mgmt, 0, 24 + 6); | |
570 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
571 | IEEE80211_STYPE_AUTH); | |
572 | if (encrypt) | |
573 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
574 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
575 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
576 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
577 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
578 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
579 | ifsta->auth_transaction = transaction + 1; | |
580 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
581 | if (extra) | |
582 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
583 | ||
584 | ieee80211_sta_tx(dev, skb, encrypt); | |
585 | } | |
586 | ||
587 | ||
588 | static void ieee80211_authenticate(struct net_device *dev, | |
589 | struct ieee80211_if_sta *ifsta) | |
590 | { | |
0795af57 JP |
591 | DECLARE_MAC_BUF(mac); |
592 | ||
f0706e82 JB |
593 | ifsta->auth_tries++; |
594 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 595 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 596 | " timed out\n", |
0795af57 | 597 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
598 | ifsta->state = IEEE80211_DISABLED; |
599 | return; | |
600 | } | |
601 | ||
602 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
603 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
604 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
605 | |
606 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
607 | ||
608 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
609 | } | |
610 | ||
611 | ||
612 | static void ieee80211_send_assoc(struct net_device *dev, | |
613 | struct ieee80211_if_sta *ifsta) | |
614 | { | |
615 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
616 | struct ieee80211_hw_mode *mode; | |
617 | struct sk_buff *skb; | |
618 | struct ieee80211_mgmt *mgmt; | |
619 | u8 *pos, *ies; | |
620 | int i, len; | |
621 | u16 capab; | |
622 | struct ieee80211_sta_bss *bss; | |
623 | int wmm = 0; | |
624 | ||
625 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
626 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
627 | ifsta->ssid_len); | |
628 | if (!skb) { | |
629 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
630 | "frame\n", dev->name); | |
631 | return; | |
632 | } | |
633 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
634 | ||
635 | mode = local->oper_hw_mode; | |
636 | capab = ifsta->capab; | |
637 | if (mode->mode == MODE_IEEE80211G) { | |
638 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME | | |
639 | WLAN_CAPABILITY_SHORT_PREAMBLE; | |
640 | } | |
cffdd30d JL |
641 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel, |
642 | ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
643 | if (bss) { |
644 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
645 | capab |= WLAN_CAPABILITY_PRIVACY; | |
646 | if (bss->wmm_ie) { | |
647 | wmm = 1; | |
648 | } | |
649 | ieee80211_rx_bss_put(dev, bss); | |
650 | } | |
651 | ||
652 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
653 | memset(mgmt, 0, 24); | |
654 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
655 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
656 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
657 | ||
d6f2da5b | 658 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
659 | skb_put(skb, 10); |
660 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
661 | IEEE80211_STYPE_REASSOC_REQ); | |
662 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
663 | mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1); | |
664 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
665 | ETH_ALEN); | |
666 | } else { | |
667 | skb_put(skb, 4); | |
668 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
669 | IEEE80211_STYPE_ASSOC_REQ); | |
670 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
671 | mgmt->u.assoc_req.listen_interval = cpu_to_le16(1); | |
672 | } | |
673 | ||
674 | /* SSID */ | |
675 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
676 | *pos++ = WLAN_EID_SSID; | |
677 | *pos++ = ifsta->ssid_len; | |
678 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
679 | ||
680 | len = mode->num_rates; | |
681 | if (len > 8) | |
682 | len = 8; | |
683 | pos = skb_put(skb, len + 2); | |
684 | *pos++ = WLAN_EID_SUPP_RATES; | |
685 | *pos++ = len; | |
686 | for (i = 0; i < len; i++) { | |
687 | int rate = mode->rates[i].rate; | |
f0706e82 JB |
688 | *pos++ = (u8) (rate / 5); |
689 | } | |
690 | ||
691 | if (mode->num_rates > len) { | |
692 | pos = skb_put(skb, mode->num_rates - len + 2); | |
693 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
694 | *pos++ = mode->num_rates - len; | |
695 | for (i = len; i < mode->num_rates; i++) { | |
696 | int rate = mode->rates[i].rate; | |
f0706e82 JB |
697 | *pos++ = (u8) (rate / 5); |
698 | } | |
699 | } | |
700 | ||
701 | if (ifsta->extra_ie) { | |
702 | pos = skb_put(skb, ifsta->extra_ie_len); | |
703 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
704 | } | |
705 | ||
d6f2da5b | 706 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
707 | pos = skb_put(skb, 9); |
708 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
709 | *pos++ = 7; /* len */ | |
710 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
711 | *pos++ = 0x50; | |
712 | *pos++ = 0xf2; | |
713 | *pos++ = 2; /* WME */ | |
714 | *pos++ = 0; /* WME info */ | |
715 | *pos++ = 1; /* WME ver */ | |
716 | *pos++ = 0; | |
717 | } | |
c7153508 RR |
718 | /* wmm support is a must to HT */ |
719 | if (wmm && mode->ht_info.ht_supported) { | |
720 | __le16 tmp = cpu_to_le16(mode->ht_info.cap); | |
721 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
722 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
723 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
724 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
725 | memcpy(pos, &tmp, sizeof(u16)); | |
726 | pos += sizeof(u16); | |
727 | *pos++ = (mode->ht_info.ampdu_factor | | |
728 | (mode->ht_info.ampdu_density << 2)); | |
729 | memcpy(pos, mode->ht_info.supp_mcs_set, 16); | |
730 | } | |
f0706e82 JB |
731 | |
732 | kfree(ifsta->assocreq_ies); | |
733 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 734 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
735 | if (ifsta->assocreq_ies) |
736 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
737 | ||
738 | ieee80211_sta_tx(dev, skb, 0); | |
739 | } | |
740 | ||
741 | ||
742 | static void ieee80211_send_deauth(struct net_device *dev, | |
743 | struct ieee80211_if_sta *ifsta, u16 reason) | |
744 | { | |
745 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
746 | struct sk_buff *skb; | |
747 | struct ieee80211_mgmt *mgmt; | |
748 | ||
749 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
750 | if (!skb) { | |
751 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
752 | "frame\n", dev->name); | |
753 | return; | |
754 | } | |
755 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
756 | ||
757 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
758 | memset(mgmt, 0, 24); | |
759 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
760 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
761 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
762 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
763 | IEEE80211_STYPE_DEAUTH); | |
764 | skb_put(skb, 2); | |
765 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
766 | ||
767 | ieee80211_sta_tx(dev, skb, 0); | |
768 | } | |
769 | ||
770 | ||
771 | static void ieee80211_send_disassoc(struct net_device *dev, | |
772 | struct ieee80211_if_sta *ifsta, u16 reason) | |
773 | { | |
774 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
775 | struct sk_buff *skb; | |
776 | struct ieee80211_mgmt *mgmt; | |
777 | ||
778 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
779 | if (!skb) { | |
780 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
781 | "frame\n", dev->name); | |
782 | return; | |
783 | } | |
784 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
785 | ||
786 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
787 | memset(mgmt, 0, 24); | |
788 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
789 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
790 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
791 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
792 | IEEE80211_STYPE_DISASSOC); | |
793 | skb_put(skb, 2); | |
794 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
795 | ||
796 | ieee80211_sta_tx(dev, skb, 0); | |
797 | } | |
798 | ||
799 | ||
800 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
801 | struct ieee80211_if_sta *ifsta) | |
802 | { | |
65c107ab | 803 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 804 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
805 | int bss_privacy; |
806 | int wep_privacy; | |
807 | int privacy_invoked; | |
f0706e82 | 808 | |
5b98b1f7 | 809 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
810 | return 0; |
811 | ||
cffdd30d JL |
812 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel, |
813 | ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
814 | if (!bss) |
815 | return 0; | |
816 | ||
5b98b1f7 JB |
817 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
818 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
819 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 JB |
820 | |
821 | ieee80211_rx_bss_put(dev, bss); | |
822 | ||
5b98b1f7 JB |
823 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
824 | return 0; | |
825 | ||
826 | return 1; | |
f0706e82 JB |
827 | } |
828 | ||
829 | ||
830 | static void ieee80211_associate(struct net_device *dev, | |
831 | struct ieee80211_if_sta *ifsta) | |
832 | { | |
0795af57 JP |
833 | DECLARE_MAC_BUF(mac); |
834 | ||
f0706e82 JB |
835 | ifsta->assoc_tries++; |
836 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 837 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 838 | " timed out\n", |
0795af57 | 839 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
840 | ifsta->state = IEEE80211_DISABLED; |
841 | return; | |
842 | } | |
843 | ||
844 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
845 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
846 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
847 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
848 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
849 | "mixed-cell disabled - abort association\n", dev->name); | |
850 | ifsta->state = IEEE80211_DISABLED; | |
851 | return; | |
852 | } | |
853 | ||
854 | ieee80211_send_assoc(dev, ifsta); | |
855 | ||
856 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
857 | } | |
858 | ||
859 | ||
860 | static void ieee80211_associated(struct net_device *dev, | |
861 | struct ieee80211_if_sta *ifsta) | |
862 | { | |
863 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
864 | struct sta_info *sta; | |
865 | int disassoc; | |
0795af57 | 866 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
867 | |
868 | /* TODO: start monitoring current AP signal quality and number of | |
869 | * missed beacons. Scan other channels every now and then and search | |
870 | * for better APs. */ | |
871 | /* TODO: remove expired BSSes */ | |
872 | ||
873 | ifsta->state = IEEE80211_ASSOCIATED; | |
874 | ||
875 | sta = sta_info_get(local, ifsta->bssid); | |
876 | if (!sta) { | |
0795af57 JP |
877 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
878 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
879 | disassoc = 1; |
880 | } else { | |
881 | disassoc = 0; | |
882 | if (time_after(jiffies, | |
883 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 884 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 885 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 886 | "current AP %s - assume out of " |
f0706e82 | 887 | "range\n", |
0795af57 | 888 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 889 | disassoc = 1; |
be8755e1 | 890 | sta_info_free(sta); |
d6f2da5b | 891 | } else |
f0706e82 JB |
892 | ieee80211_send_probe_req(dev, ifsta->bssid, |
893 | local->scan_ssid, | |
894 | local->scan_ssid_len); | |
d6f2da5b | 895 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 896 | } else { |
d6f2da5b | 897 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
898 | if (time_after(jiffies, ifsta->last_probe + |
899 | IEEE80211_PROBE_INTERVAL)) { | |
900 | ifsta->last_probe = jiffies; | |
901 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
902 | ifsta->ssid, | |
903 | ifsta->ssid_len); | |
904 | } | |
905 | } | |
906 | sta_info_put(sta); | |
907 | } | |
908 | if (disassoc) { | |
2d192d95 MW |
909 | ifsta->state = IEEE80211_DISABLED; |
910 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
911 | } else { |
912 | mod_timer(&ifsta->timer, jiffies + | |
913 | IEEE80211_MONITORING_INTERVAL); | |
914 | } | |
915 | } | |
916 | ||
917 | ||
918 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
919 | u8 *ssid, size_t ssid_len) | |
920 | { | |
921 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
922 | struct ieee80211_hw_mode *mode; | |
923 | struct sk_buff *skb; | |
924 | struct ieee80211_mgmt *mgmt; | |
925 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
926 | int i; | |
927 | ||
928 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
929 | if (!skb) { | |
930 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
931 | "request\n", dev->name); | |
932 | return; | |
933 | } | |
934 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
935 | ||
936 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
937 | memset(mgmt, 0, 24); | |
938 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
939 | IEEE80211_STYPE_PROBE_REQ); | |
940 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
941 | if (dst) { | |
942 | memcpy(mgmt->da, dst, ETH_ALEN); | |
943 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
944 | } else { | |
945 | memset(mgmt->da, 0xff, ETH_ALEN); | |
946 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
947 | } | |
948 | pos = skb_put(skb, 2 + ssid_len); | |
949 | *pos++ = WLAN_EID_SSID; | |
950 | *pos++ = ssid_len; | |
951 | memcpy(pos, ssid, ssid_len); | |
952 | ||
953 | supp_rates = skb_put(skb, 2); | |
954 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
955 | supp_rates[1] = 0; | |
956 | mode = local->oper_hw_mode; | |
957 | for (i = 0; i < mode->num_rates; i++) { | |
958 | struct ieee80211_rate *rate = &mode->rates[i]; | |
959 | if (!(rate->flags & IEEE80211_RATE_SUPPORTED)) | |
960 | continue; | |
961 | if (esupp_rates) { | |
962 | pos = skb_put(skb, 1); | |
963 | esupp_rates[1]++; | |
964 | } else if (supp_rates[1] == 8) { | |
965 | esupp_rates = skb_put(skb, 3); | |
966 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
967 | esupp_rates[1] = 1; | |
968 | pos = &esupp_rates[2]; | |
969 | } else { | |
970 | pos = skb_put(skb, 1); | |
971 | supp_rates[1]++; | |
972 | } | |
b708e610 | 973 | *pos = rate->rate / 5; |
f0706e82 JB |
974 | } |
975 | ||
976 | ieee80211_sta_tx(dev, skb, 0); | |
977 | } | |
978 | ||
979 | ||
980 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
981 | { | |
982 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
983 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 984 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
985 | return 0; |
986 | return 1; | |
987 | } | |
988 | ||
989 | ||
990 | static void ieee80211_auth_completed(struct net_device *dev, | |
991 | struct ieee80211_if_sta *ifsta) | |
992 | { | |
993 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 994 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
995 | ieee80211_associate(dev, ifsta); |
996 | } | |
997 | ||
998 | ||
999 | static void ieee80211_auth_challenge(struct net_device *dev, | |
1000 | struct ieee80211_if_sta *ifsta, | |
1001 | struct ieee80211_mgmt *mgmt, | |
1002 | size_t len) | |
1003 | { | |
1004 | u8 *pos; | |
1005 | struct ieee802_11_elems elems; | |
1006 | ||
1007 | printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name); | |
1008 | pos = mgmt->u.auth.variable; | |
67a4cce4 | 1009 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1010 | if (!elems.challenge) { |
1011 | printk(KERN_DEBUG "%s: no challenge IE in shared key auth " | |
1012 | "frame\n", dev->name); | |
1013 | return; | |
1014 | } | |
1015 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, | |
1016 | elems.challenge_len + 2, 1); | |
1017 | } | |
1018 | ||
9f985b0e RR |
1019 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
1020 | u8 dialog_token, u16 status, u16 policy, | |
1021 | u16 buf_size, u16 timeout) | |
1022 | { | |
1023 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1024 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1025 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1026 | struct sk_buff *skb; | |
1027 | struct ieee80211_mgmt *mgmt; | |
1028 | u16 capab; | |
1029 | ||
07db2183 RR |
1030 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + |
1031 | sizeof(mgmt->u.action.u.addba_resp)); | |
9f985b0e RR |
1032 | if (!skb) { |
1033 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1034 | "for addba resp frame\n", dev->name); | |
1035 | return; | |
1036 | } | |
1037 | ||
1038 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1039 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1040 | memset(mgmt, 0, 24); | |
1041 | memcpy(mgmt->da, da, ETH_ALEN); | |
1042 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1043 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1044 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1045 | else | |
1046 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1047 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1048 | IEEE80211_STYPE_ACTION); | |
1049 | ||
1050 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1051 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1052 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1053 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1054 | ||
1055 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1056 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1057 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1058 | ||
1059 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1060 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1061 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1062 | ||
1063 | ieee80211_sta_tx(dev, skb, 0); | |
1064 | ||
1065 | return; | |
1066 | } | |
1067 | ||
1068 | static void ieee80211_sta_process_addba_request(struct net_device *dev, | |
1069 | struct ieee80211_mgmt *mgmt, | |
1070 | size_t len) | |
1071 | { | |
1072 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1073 | struct ieee80211_hw *hw = &local->hw; |
1074 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1075 | struct sta_info *sta; |
07db2183 RR |
1076 | struct tid_ampdu_rx *tid_agg_rx; |
1077 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1078 | u8 dialog_token; |
07db2183 RR |
1079 | int ret = -EOPNOTSUPP; |
1080 | DECLARE_MAC_BUF(mac); | |
9f985b0e RR |
1081 | |
1082 | sta = sta_info_get(local, mgmt->sa); | |
1083 | if (!sta) | |
1084 | return; | |
1085 | ||
1086 | /* extract session parameters from addba request frame */ | |
1087 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1088 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1089 | start_seq_num = |
1090 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1091 | |
1092 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1093 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1094 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1095 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1096 | ||
9f985b0e RR |
1097 | status = WLAN_STATUS_REQUEST_DECLINED; |
1098 | ||
07db2183 RR |
1099 | /* sanity check for incoming parameters: |
1100 | * check if configuration can support the BA policy | |
1101 | * and if buffer size does not exceeds max value */ | |
1102 | if (((ba_policy != 1) | |
1103 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1104 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1105 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1106 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1107 | if (net_ratelimit()) | |
1108 | printk(KERN_DEBUG "Block Ack Req with bad params from " | |
1109 | "%s on tid %u. policy %d, buffer size %d\n", | |
1110 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1111 | buf_size); | |
1112 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1113 | goto end_no_lock; | |
1114 | } | |
1115 | /* determine default buffer size */ | |
1116 | if (buf_size == 0) { | |
1117 | struct ieee80211_hw_mode *mode = conf->mode; | |
1118 | buf_size = IEEE80211_MIN_AMPDU_BUF; | |
1119 | buf_size = buf_size << mode->ht_info.ampdu_factor; | |
1120 | } | |
1121 | ||
1122 | tid_agg_rx = &sta->ampdu_mlme.tid_rx[tid]; | |
1123 | ||
1124 | /* examine state machine */ | |
1125 | spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1126 | ||
1127 | if (tid_agg_rx->state != HT_AGG_STATE_IDLE) { | |
1128 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1129 | if (net_ratelimit()) | |
1130 | printk(KERN_DEBUG "unexpected Block Ack Req from " | |
1131 | "%s on tid %u\n", | |
1132 | print_mac(mac, mgmt->sa), tid); | |
1133 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1134 | goto end; | |
1135 | } | |
1136 | ||
1137 | /* prepare reordering buffer */ | |
1138 | tid_agg_rx->reorder_buf = | |
1139 | kmalloc(buf_size * sizeof(struct sk_buf *), GFP_ATOMIC); | |
03147dfc JB |
1140 | if (!tid_agg_rx->reorder_buf) { |
1141 | if (net_ratelimit()) | |
1142 | printk(KERN_ERR "can not allocate reordering buffer " | |
1143 | "to tid %d\n", tid); | |
07db2183 RR |
1144 | goto end; |
1145 | } | |
1146 | memset(tid_agg_rx->reorder_buf, 0, | |
1147 | buf_size * sizeof(struct sk_buf *)); | |
1148 | ||
1149 | if (local->ops->ampdu_action) | |
1150 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
1151 | sta->addr, tid, start_seq_num); | |
1152 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1153 | printk(KERN_DEBUG "Rx A-MPDU on tid %d result %d", tid, ret); | |
1154 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1155 | ||
1156 | if (ret) { | |
1157 | kfree(tid_agg_rx->reorder_buf); | |
1158 | goto end; | |
1159 | } | |
1160 | ||
1161 | /* change state and send addba resp */ | |
1162 | tid_agg_rx->state = HT_AGG_STATE_OPERATIONAL; | |
1163 | tid_agg_rx->dialog_token = dialog_token; | |
1164 | tid_agg_rx->ssn = start_seq_num; | |
1165 | tid_agg_rx->head_seq_num = start_seq_num; | |
1166 | tid_agg_rx->buf_size = buf_size; | |
1167 | tid_agg_rx->timeout = timeout; | |
1168 | tid_agg_rx->stored_mpdu_num = 0; | |
1169 | status = WLAN_STATUS_SUCCESS; | |
1170 | end: | |
1171 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1172 | ||
1173 | end_no_lock: | |
9f985b0e RR |
1174 | ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token, |
1175 | status, 1, buf_size, timeout); | |
1176 | sta_info_put(sta); | |
1177 | } | |
f0706e82 | 1178 | |
71ebb4aa RR |
1179 | static void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, |
1180 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1181 | { |
1182 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1183 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1184 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1185 | struct sk_buff *skb; | |
1186 | struct ieee80211_mgmt *mgmt; | |
1187 | u16 params; | |
1188 | ||
1189 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + | |
1190 | sizeof(mgmt->u.action.u.delba)); | |
1191 | ||
1192 | if (!skb) { | |
1193 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1194 | "for delba frame\n", dev->name); | |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1199 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1200 | memset(mgmt, 0, 24); | |
1201 | memcpy(mgmt->da, da, ETH_ALEN); | |
1202 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1203 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1204 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1205 | else | |
1206 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1207 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1208 | IEEE80211_STYPE_ACTION); | |
1209 | ||
1210 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1211 | ||
1212 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1213 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1214 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1215 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1216 | ||
1217 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1218 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1219 | ||
1220 | ieee80211_sta_tx(dev, skb, 0); | |
1221 | } | |
1222 | ||
1223 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, | |
1224 | u16 initiator, u16 reason) | |
1225 | { | |
1226 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1227 | struct ieee80211_hw *hw = &local->hw; | |
1228 | struct sta_info *sta; | |
b580781e | 1229 | int ret, i; |
07db2183 RR |
1230 | |
1231 | sta = sta_info_get(local, ra); | |
1232 | if (!sta) | |
1233 | return; | |
1234 | ||
1235 | /* check if TID is in operational state */ | |
1236 | spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1237 | if (sta->ampdu_mlme.tid_rx[tid].state | |
1238 | != HT_AGG_STATE_OPERATIONAL) { | |
1239 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
07db2183 RR |
1240 | sta_info_put(sta); |
1241 | return; | |
1242 | } | |
1243 | sta->ampdu_mlme.tid_rx[tid].state = | |
1244 | HT_AGG_STATE_REQ_STOP_BA_MSK | | |
1245 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
1246 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1247 | ||
1248 | /* stop HW Rx aggregation. ampdu_action existence | |
1249 | * already verified in session init so we add the BUG_ON */ | |
1250 | BUG_ON(!local->ops->ampdu_action); | |
1251 | ||
1252 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, | |
1253 | ra, tid, EINVAL); | |
1254 | if (ret) | |
1255 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
1256 | "aggergation for tid %d\n", tid); | |
1257 | ||
1258 | /* shutdown timer has not expired */ | |
1259 | if (initiator != WLAN_BACK_TIMER) | |
1260 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]. | |
1261 | session_timer); | |
1262 | ||
1263 | /* check if this is a self generated aggregation halt */ | |
1264 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1265 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1266 | ||
1267 | /* free the reordering buffer */ | |
b580781e RR |
1268 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid].buf_size; i++) { |
1269 | if (sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]) { | |
1270 | /* release the reordered frames */ | |
1271 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]); | |
1272 | sta->ampdu_mlme.tid_rx[tid].stored_mpdu_num--; | |
1273 | sta->ampdu_mlme.tid_rx[tid].reorder_buf[i] = NULL; | |
1274 | } | |
1275 | } | |
07db2183 RR |
1276 | kfree(sta->ampdu_mlme.tid_rx[tid].reorder_buf); |
1277 | ||
1278 | sta->ampdu_mlme.tid_rx[tid].state = HT_AGG_STATE_IDLE; | |
1279 | sta_info_put(sta); | |
1280 | } | |
1281 | ||
688b88a4 RR |
1282 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1283 | struct ieee80211_mgmt *mgmt, size_t len) | |
1284 | { | |
1285 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1286 | struct sta_info *sta; | |
1287 | u16 tid, params; | |
1288 | u16 initiator; | |
1289 | DECLARE_MAC_BUF(mac); | |
1290 | ||
1291 | sta = sta_info_get(local, mgmt->sa); | |
1292 | if (!sta) | |
1293 | return; | |
1294 | ||
1295 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1296 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1297 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1298 | ||
1299 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1300 | if (net_ratelimit()) | |
1301 | printk(KERN_DEBUG "delba from %s on tid %d reason code %d\n", | |
1302 | print_mac(mac, mgmt->sa), tid, | |
1303 | mgmt->u.action.u.delba.reason_code); | |
1304 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1305 | ||
1306 | if (initiator == WLAN_BACK_INITIATOR) | |
1307 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1308 | WLAN_BACK_INITIATOR, 0); | |
1309 | sta_info_put(sta); | |
1310 | } | |
1311 | ||
07db2183 RR |
1312 | /* |
1313 | * After receiving Block Ack Request (BAR) we activated a | |
1314 | * timer after each frame arrives from the originator. | |
1315 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. | |
1316 | */ | |
1317 | void sta_rx_agg_session_timer_expired(unsigned long data) | |
1318 | { | |
1319 | /* not an elegant detour, but there is no choice as the timer passes | |
1320 | * only one argument, and verious sta_info are needed here, so init | |
1321 | * flow in sta_info_add gives the TID as data, while the timer_to_id | |
1322 | * array gives the sta through container_of */ | |
1323 | u8 *ptid = (u8 *)data; | |
1324 | u8 *timer_to_id = ptid - *ptid; | |
1325 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1326 | timer_to_tid[0]); | |
1327 | ||
1328 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); | |
1329 | ieee80211_sta_stop_rx_ba_session(sta->dev, sta->addr, (u16)*ptid, | |
1330 | WLAN_BACK_TIMER, | |
1331 | WLAN_REASON_QSTA_TIMEOUT); | |
1332 | } | |
1333 | ||
1334 | ||
f0706e82 JB |
1335 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1336 | struct ieee80211_if_sta *ifsta, | |
1337 | struct ieee80211_mgmt *mgmt, | |
1338 | size_t len) | |
1339 | { | |
1340 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1341 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1342 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1343 | |
1344 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
51fb61e7 | 1345 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 1346 | printk(KERN_DEBUG "%s: authentication frame received from " |
0795af57 JP |
1347 | "%s, but not in authenticate state - ignored\n", |
1348 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1349 | return; |
1350 | } | |
1351 | ||
1352 | if (len < 24 + 6) { | |
1353 | printk(KERN_DEBUG "%s: too short (%zd) authentication frame " | |
0795af57 JP |
1354 | "received from %s - ignored\n", |
1355 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1356 | return; |
1357 | } | |
1358 | ||
51fb61e7 | 1359 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1360 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { |
1361 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1362 | "unknown AP (SA=%s BSSID=%s) - " |
1363 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1364 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1365 | return; |
1366 | } | |
1367 | ||
51fb61e7 | 1368 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1369 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) { |
1370 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1371 | "unknown BSSID (SA=%s BSSID=%s) - " |
1372 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1373 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1374 | return; |
1375 | } | |
1376 | ||
1377 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1378 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1379 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1380 | ||
0795af57 | 1381 | printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d " |
f0706e82 | 1382 | "transaction=%d status=%d)\n", |
0795af57 | 1383 | dev->name, print_mac(mac, mgmt->sa), auth_alg, |
f0706e82 JB |
1384 | auth_transaction, status_code); |
1385 | ||
51fb61e7 | 1386 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 JB |
1387 | /* IEEE 802.11 standard does not require authentication in IBSS |
1388 | * networks and most implementations do not seem to use it. | |
1389 | * However, try to reply to authentication attempts if someone | |
1390 | * has actually implemented this. | |
1391 | * TODO: Could implement shared key authentication. */ | |
1392 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) { | |
1393 | printk(KERN_DEBUG "%s: unexpected IBSS authentication " | |
1394 | "frame (alg=%d transaction=%d)\n", | |
1395 | dev->name, auth_alg, auth_transaction); | |
1396 | return; | |
1397 | } | |
1398 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); | |
1399 | } | |
1400 | ||
1401 | if (auth_alg != ifsta->auth_alg || | |
1402 | auth_transaction != ifsta->auth_transaction) { | |
1403 | printk(KERN_DEBUG "%s: unexpected authentication frame " | |
1404 | "(alg=%d transaction=%d)\n", | |
1405 | dev->name, auth_alg, auth_transaction); | |
1406 | return; | |
1407 | } | |
1408 | ||
1409 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1410 | printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d " | |
1411 | "code=%d)\n", dev->name, ifsta->auth_alg, status_code); | |
1412 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { | |
1413 | u8 algs[3]; | |
1414 | const int num_algs = ARRAY_SIZE(algs); | |
1415 | int i, pos; | |
1416 | algs[0] = algs[1] = algs[2] = 0xff; | |
1417 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1418 | algs[0] = WLAN_AUTH_OPEN; | |
1419 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1420 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1421 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1422 | algs[2] = WLAN_AUTH_LEAP; | |
1423 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1424 | pos = 0; | |
1425 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1426 | pos = 1; | |
1427 | else | |
1428 | pos = 2; | |
1429 | for (i = 0; i < num_algs; i++) { | |
1430 | pos++; | |
1431 | if (pos >= num_algs) | |
1432 | pos = 0; | |
1433 | if (algs[pos] == ifsta->auth_alg || | |
1434 | algs[pos] == 0xff) | |
1435 | continue; | |
1436 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1437 | !ieee80211_sta_wep_configured(dev)) | |
1438 | continue; | |
1439 | ifsta->auth_alg = algs[pos]; | |
1440 | printk(KERN_DEBUG "%s: set auth_alg=%d for " | |
1441 | "next try\n", | |
1442 | dev->name, ifsta->auth_alg); | |
1443 | break; | |
1444 | } | |
1445 | } | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | switch (ifsta->auth_alg) { | |
1450 | case WLAN_AUTH_OPEN: | |
1451 | case WLAN_AUTH_LEAP: | |
1452 | ieee80211_auth_completed(dev, ifsta); | |
1453 | break; | |
1454 | case WLAN_AUTH_SHARED_KEY: | |
1455 | if (ifsta->auth_transaction == 4) | |
1456 | ieee80211_auth_completed(dev, ifsta); | |
1457 | else | |
1458 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1459 | break; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | ||
1464 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1465 | struct ieee80211_if_sta *ifsta, | |
1466 | struct ieee80211_mgmt *mgmt, | |
1467 | size_t len) | |
1468 | { | |
1469 | u16 reason_code; | |
0795af57 | 1470 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1471 | |
1472 | if (len < 24 + 2) { | |
1473 | printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame " | |
0795af57 JP |
1474 | "received from %s - ignored\n", |
1475 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1476 | return; |
1477 | } | |
1478 | ||
1479 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1480 | printk(KERN_DEBUG "%s: deauthentication frame received from " | |
0795af57 JP |
1481 | "unknown AP (SA=%s BSSID=%s) - " |
1482 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1483 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1484 | return; |
1485 | } | |
1486 | ||
1487 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1488 | ||
0795af57 | 1489 | printk(KERN_DEBUG "%s: RX deauthentication from %s" |
f0706e82 | 1490 | " (reason=%d)\n", |
0795af57 | 1491 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1492 | |
d6f2da5b | 1493 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) { |
f0706e82 JB |
1494 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
1495 | } | |
1496 | ||
1497 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1498 | ifsta->state == IEEE80211_ASSOCIATE || | |
1499 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1500 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1501 | mod_timer(&ifsta->timer, jiffies + | |
1502 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1503 | } | |
1504 | ||
1505 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1506 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1507 | } |
1508 | ||
1509 | ||
1510 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1511 | struct ieee80211_if_sta *ifsta, | |
1512 | struct ieee80211_mgmt *mgmt, | |
1513 | size_t len) | |
1514 | { | |
1515 | u16 reason_code; | |
0795af57 | 1516 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1517 | |
1518 | if (len < 24 + 2) { | |
1519 | printk(KERN_DEBUG "%s: too short (%zd) disassociation frame " | |
0795af57 JP |
1520 | "received from %s - ignored\n", |
1521 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1522 | return; |
1523 | } | |
1524 | ||
1525 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1526 | printk(KERN_DEBUG "%s: disassociation frame received from " | |
0795af57 JP |
1527 | "unknown AP (SA=%s BSSID=%s) - " |
1528 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1529 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1530 | return; |
1531 | } | |
1532 | ||
1533 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1534 | ||
0795af57 | 1535 | printk(KERN_DEBUG "%s: RX disassociation from %s" |
f0706e82 | 1536 | " (reason=%d)\n", |
0795af57 | 1537 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1538 | |
d6f2da5b | 1539 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
1540 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
1541 | ||
1542 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
1543 | ifsta->state = IEEE80211_ASSOCIATE; | |
1544 | mod_timer(&ifsta->timer, jiffies + | |
1545 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1546 | } | |
1547 | ||
1548 | ieee80211_set_disassoc(dev, ifsta, 0); | |
1549 | } | |
1550 | ||
1551 | ||
471b3efd | 1552 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1553 | struct ieee80211_if_sta *ifsta, |
1554 | struct ieee80211_mgmt *mgmt, | |
1555 | size_t len, | |
1556 | int reassoc) | |
1557 | { | |
471b3efd JB |
1558 | struct ieee80211_local *local = sdata->local; |
1559 | struct net_device *dev = sdata->dev; | |
f0706e82 JB |
1560 | struct ieee80211_hw_mode *mode; |
1561 | struct sta_info *sta; | |
1562 | u32 rates; | |
1563 | u16 capab_info, status_code, aid; | |
1564 | struct ieee802_11_elems elems; | |
471b3efd | 1565 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1566 | u8 *pos; |
1567 | int i, j; | |
0795af57 | 1568 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1569 | |
1570 | /* AssocResp and ReassocResp have identical structure, so process both | |
1571 | * of them in this function. */ | |
1572 | ||
1573 | if (ifsta->state != IEEE80211_ASSOCIATE) { | |
1574 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1575 | "%s, but not in associate state - ignored\n", |
1576 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1577 | return; |
1578 | } | |
1579 | ||
1580 | if (len < 24 + 6) { | |
1581 | printk(KERN_DEBUG "%s: too short (%zd) association frame " | |
0795af57 JP |
1582 | "received from %s - ignored\n", |
1583 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1584 | return; |
1585 | } | |
1586 | ||
1587 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1588 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1589 | "unknown AP (SA=%s BSSID=%s) - " |
1590 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1591 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1592 | return; |
1593 | } | |
1594 | ||
1595 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1596 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1597 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1598 | |
0795af57 | 1599 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1600 | "status=%d aid=%d)\n", |
0795af57 | 1601 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1602 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1603 | |
1604 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1605 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
1606 | dev->name, status_code); | |
8a69aa93 DD |
1607 | /* if this was a reassociation, ensure we try a "full" |
1608 | * association next time. This works around some broken APs | |
1609 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1610 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1611 | return; |
1612 | } | |
1613 | ||
1dd84aa2 JB |
1614 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1615 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
1616 | "set\n", dev->name, aid); | |
1617 | aid &= ~(BIT(15) | BIT(14)); | |
1618 | ||
f0706e82 | 1619 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1620 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1621 | |
1622 | if (!elems.supp_rates) { | |
1623 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
1624 | dev->name); | |
1625 | return; | |
1626 | } | |
1627 | ||
1628 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
1629 | ifsta->aid = aid; | |
1630 | ifsta->ap_capab = capab_info; | |
1631 | ||
1632 | kfree(ifsta->assocresp_ies); | |
1633 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 1634 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
1635 | if (ifsta->assocresp_ies) |
1636 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
1637 | ||
471b3efd JB |
1638 | /* set AID, ieee80211_set_associated() will tell the driver */ |
1639 | bss_conf->aid = aid; | |
f0706e82 JB |
1640 | ieee80211_set_associated(dev, ifsta, 1); |
1641 | ||
1642 | /* Add STA entry for the AP */ | |
1643 | sta = sta_info_get(local, ifsta->bssid); | |
1644 | if (!sta) { | |
1645 | struct ieee80211_sta_bss *bss; | |
0ec0b7ac | 1646 | sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL); |
f0706e82 JB |
1647 | if (!sta) { |
1648 | printk(KERN_DEBUG "%s: failed to add STA entry for the" | |
1649 | " AP\n", dev->name); | |
1650 | return; | |
1651 | } | |
65c107ab | 1652 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
cffdd30d JL |
1653 | local->hw.conf.channel, |
1654 | ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
1655 | if (bss) { |
1656 | sta->last_rssi = bss->rssi; | |
1657 | sta->last_signal = bss->signal; | |
1658 | sta->last_noise = bss->noise; | |
1659 | ieee80211_rx_bss_put(dev, bss); | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | sta->dev = dev; | |
c9ee23df | 1664 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP; |
f0706e82 JB |
1665 | |
1666 | rates = 0; | |
1667 | mode = local->oper_hw_mode; | |
1668 | for (i = 0; i < elems.supp_rates_len; i++) { | |
1669 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
f0706e82 JB |
1670 | for (j = 0; j < mode->num_rates; j++) |
1671 | if (mode->rates[j].rate == rate) | |
1672 | rates |= BIT(j); | |
1673 | } | |
1674 | for (i = 0; i < elems.ext_supp_rates_len; i++) { | |
1675 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
f0706e82 JB |
1676 | for (j = 0; j < mode->num_rates; j++) |
1677 | if (mode->rates[j].rate == rate) | |
1678 | rates |= BIT(j); | |
1679 | } | |
1680 | sta->supp_rates = rates; | |
1681 | ||
d3c990fb RR |
1682 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
1683 | local->ops->conf_ht) { | |
1684 | struct ieee80211_ht_bss_info bss_info; | |
1685 | ||
1686 | ieee80211_ht_cap_ie_to_ht_info( | |
1687 | (struct ieee80211_ht_cap *) | |
1688 | elems.ht_cap_elem, &sta->ht_info); | |
1689 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1690 | (struct ieee80211_ht_addt_info *) | |
1691 | elems.ht_info_elem, &bss_info); | |
1692 | ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info); | |
1693 | } | |
1694 | ||
f0706e82 JB |
1695 | rate_control_rate_init(sta, local); |
1696 | ||
d6f2da5b | 1697 | if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
1698 | sta->flags |= WLAN_STA_WME; |
1699 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, | |
1700 | elems.wmm_param_len); | |
1701 | } | |
1702 | ||
1703 | ||
1704 | sta_info_put(sta); | |
1705 | ||
1706 | ieee80211_associated(dev, ifsta); | |
1707 | } | |
1708 | ||
1709 | ||
1710 | /* Caller must hold local->sta_bss_lock */ | |
1711 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
1712 | struct ieee80211_sta_bss *bss) | |
1713 | { | |
1714 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1715 | bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
1716 | local->sta_bss_hash[STA_HASH(bss->bssid)] = bss; | |
1717 | } | |
1718 | ||
1719 | ||
1720 | /* Caller must hold local->sta_bss_lock */ | |
1721 | static void __ieee80211_rx_bss_hash_del(struct net_device *dev, | |
1722 | struct ieee80211_sta_bss *bss) | |
1723 | { | |
1724 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1725 | struct ieee80211_sta_bss *b, *prev = NULL; | |
1726 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
1727 | while (b) { | |
1728 | if (b == bss) { | |
1729 | if (!prev) | |
1730 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
1731 | bss->hnext; | |
1732 | else | |
1733 | prev->hnext = bss->hnext; | |
1734 | break; | |
1735 | } | |
1736 | prev = b; | |
1737 | b = b->hnext; | |
1738 | } | |
1739 | } | |
1740 | ||
1741 | ||
1742 | static struct ieee80211_sta_bss * | |
cffdd30d JL |
1743 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel, |
1744 | u8 *ssid, u8 ssid_len) | |
f0706e82 JB |
1745 | { |
1746 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1747 | struct ieee80211_sta_bss *bss; | |
1748 | ||
dd00cc48 | 1749 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
1750 | if (!bss) |
1751 | return NULL; | |
f0706e82 JB |
1752 | atomic_inc(&bss->users); |
1753 | atomic_inc(&bss->users); | |
1754 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
65c107ab | 1755 | bss->channel = channel; |
cffdd30d JL |
1756 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
1757 | memcpy(bss->ssid, ssid, ssid_len); | |
1758 | bss->ssid_len = ssid_len; | |
1759 | } | |
f0706e82 JB |
1760 | |
1761 | spin_lock_bh(&local->sta_bss_lock); | |
1762 | /* TODO: order by RSSI? */ | |
1763 | list_add_tail(&bss->list, &local->sta_bss_list); | |
1764 | __ieee80211_rx_bss_hash_add(dev, bss); | |
1765 | spin_unlock_bh(&local->sta_bss_lock); | |
1766 | return bss; | |
1767 | } | |
1768 | ||
1769 | ||
1770 | static struct ieee80211_sta_bss * | |
cffdd30d JL |
1771 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, |
1772 | u8 *ssid, u8 ssid_len) | |
f0706e82 JB |
1773 | { |
1774 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1775 | struct ieee80211_sta_bss *bss; | |
1776 | ||
1777 | spin_lock_bh(&local->sta_bss_lock); | |
1778 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
1779 | while (bss) { | |
cffdd30d JL |
1780 | if (!memcmp(bss->bssid, bssid, ETH_ALEN) && |
1781 | bss->channel == channel && | |
1782 | bss->ssid_len == ssid_len && | |
1783 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
1784 | atomic_inc(&bss->users); |
1785 | break; | |
1786 | } | |
1787 | bss = bss->hnext; | |
1788 | } | |
1789 | spin_unlock_bh(&local->sta_bss_lock); | |
1790 | return bss; | |
1791 | } | |
1792 | ||
1793 | ||
1794 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
1795 | { | |
1796 | kfree(bss->wpa_ie); | |
1797 | kfree(bss->rsn_ie); | |
1798 | kfree(bss->wmm_ie); | |
c7153508 | 1799 | kfree(bss->ht_ie); |
f0706e82 JB |
1800 | kfree(bss); |
1801 | } | |
1802 | ||
1803 | ||
1804 | static void ieee80211_rx_bss_put(struct net_device *dev, | |
1805 | struct ieee80211_sta_bss *bss) | |
1806 | { | |
1807 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1808 | if (!atomic_dec_and_test(&bss->users)) | |
1809 | return; | |
1810 | ||
1811 | spin_lock_bh(&local->sta_bss_lock); | |
1812 | __ieee80211_rx_bss_hash_del(dev, bss); | |
1813 | list_del(&bss->list); | |
1814 | spin_unlock_bh(&local->sta_bss_lock); | |
1815 | ieee80211_rx_bss_free(bss); | |
1816 | } | |
1817 | ||
1818 | ||
1819 | void ieee80211_rx_bss_list_init(struct net_device *dev) | |
1820 | { | |
1821 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1822 | spin_lock_init(&local->sta_bss_lock); | |
1823 | INIT_LIST_HEAD(&local->sta_bss_list); | |
1824 | } | |
1825 | ||
1826 | ||
1827 | void ieee80211_rx_bss_list_deinit(struct net_device *dev) | |
1828 | { | |
1829 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1830 | struct ieee80211_sta_bss *bss, *tmp; | |
1831 | ||
1832 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
1833 | ieee80211_rx_bss_put(dev, bss); | |
1834 | } | |
1835 | ||
1836 | ||
1837 | static void ieee80211_rx_bss_info(struct net_device *dev, | |
1838 | struct ieee80211_mgmt *mgmt, | |
1839 | size_t len, | |
1840 | struct ieee80211_rx_status *rx_status, | |
1841 | int beacon) | |
1842 | { | |
1843 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1844 | struct ieee802_11_elems elems; | |
1845 | size_t baselen; | |
67a4cce4 | 1846 | int channel, clen; |
f0706e82 JB |
1847 | struct ieee80211_sta_bss *bss; |
1848 | struct sta_info *sta; | |
1849 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1850 | u64 timestamp; | |
0795af57 JP |
1851 | DECLARE_MAC_BUF(mac); |
1852 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
1853 | |
1854 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
1855 | return; /* ignore ProbeResp to foreign address */ | |
1856 | ||
1857 | #if 0 | |
0795af57 | 1858 | printk(KERN_DEBUG "%s: RX %s from %s to %s\n", |
f0706e82 | 1859 | dev->name, beacon ? "Beacon" : "Probe Response", |
0795af57 | 1860 | print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da)); |
f0706e82 JB |
1861 | #endif |
1862 | ||
1863 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1864 | if (baselen > len) | |
1865 | return; | |
1866 | ||
1867 | timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); | |
1868 | ||
51fb61e7 | 1869 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && |
f0706e82 JB |
1870 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { |
1871 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1872 | static unsigned long last_tsf_debug = 0; | |
1873 | u64 tsf; | |
1874 | if (local->ops->get_tsf) | |
1875 | tsf = local->ops->get_tsf(local_to_hw(local)); | |
1876 | else | |
1877 | tsf = -1LLU; | |
1878 | if (time_after(jiffies, last_tsf_debug + 5 * HZ)) { | |
0795af57 JP |
1879 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" |
1880 | "%s TSF=0x%llx BCN=0x%llx diff=%lld " | |
f0706e82 | 1881 | "@%lu\n", |
0795af57 | 1882 | print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->bssid), |
f0706e82 JB |
1883 | (unsigned long long)tsf, |
1884 | (unsigned long long)timestamp, | |
1885 | (unsigned long long)(tsf - timestamp), | |
1886 | jiffies); | |
1887 | last_tsf_debug = jiffies; | |
1888 | } | |
1889 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
1890 | } | |
1891 | ||
67a4cce4 | 1892 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 1893 | |
51fb61e7 | 1894 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && |
f0706e82 JB |
1895 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
1896 | (sta = sta_info_get(local, mgmt->sa))) { | |
1897 | struct ieee80211_hw_mode *mode; | |
1898 | struct ieee80211_rate *rates; | |
1899 | size_t num_rates; | |
1900 | u32 supp_rates, prev_rates; | |
1901 | int i, j; | |
1902 | ||
ece8eddd | 1903 | mode = local->sta_sw_scanning ? |
f0706e82 | 1904 | local->scan_hw_mode : local->oper_hw_mode; |
ece8eddd ZY |
1905 | |
1906 | if (local->sta_hw_scanning) { | |
1907 | /* search for the correct mode matches the beacon */ | |
1908 | list_for_each_entry(mode, &local->modes_list, list) | |
1909 | if (mode->mode == rx_status->phymode) | |
1910 | break; | |
1911 | ||
1912 | if (mode == NULL) | |
1913 | mode = local->oper_hw_mode; | |
1914 | } | |
f0706e82 JB |
1915 | rates = mode->rates; |
1916 | num_rates = mode->num_rates; | |
1917 | ||
1918 | supp_rates = 0; | |
1919 | for (i = 0; i < elems.supp_rates_len + | |
1920 | elems.ext_supp_rates_len; i++) { | |
1921 | u8 rate = 0; | |
1922 | int own_rate; | |
1923 | if (i < elems.supp_rates_len) | |
1924 | rate = elems.supp_rates[i]; | |
1925 | else if (elems.ext_supp_rates) | |
1926 | rate = elems.ext_supp_rates | |
1927 | [i - elems.supp_rates_len]; | |
1928 | own_rate = 5 * (rate & 0x7f); | |
f0706e82 JB |
1929 | for (j = 0; j < num_rates; j++) |
1930 | if (rates[j].rate == own_rate) | |
1931 | supp_rates |= BIT(j); | |
1932 | } | |
1933 | ||
1934 | prev_rates = sta->supp_rates; | |
1935 | sta->supp_rates &= supp_rates; | |
1936 | if (sta->supp_rates == 0) { | |
1937 | /* No matching rates - this should not really happen. | |
1938 | * Make sure that at least one rate is marked | |
1939 | * supported to avoid issues with TX rate ctrl. */ | |
1940 | sta->supp_rates = sdata->u.sta.supp_rates_bits; | |
1941 | } | |
1942 | if (sta->supp_rates != prev_rates) { | |
1943 | printk(KERN_DEBUG "%s: updated supp_rates set for " | |
0795af57 | 1944 | "%s based on beacon info (0x%x & 0x%x -> " |
f0706e82 | 1945 | "0x%x)\n", |
0795af57 | 1946 | dev->name, print_mac(mac, sta->addr), prev_rates, |
f0706e82 JB |
1947 | supp_rates, sta->supp_rates); |
1948 | } | |
1949 | sta_info_put(sta); | |
1950 | } | |
1951 | ||
1952 | if (!elems.ssid) | |
1953 | return; | |
1954 | ||
1955 | if (elems.ds_params && elems.ds_params_len == 1) | |
1956 | channel = elems.ds_params[0]; | |
1957 | else | |
1958 | channel = rx_status->channel; | |
1959 | ||
cffdd30d JL |
1960 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel, |
1961 | elems.ssid, elems.ssid_len); | |
f0706e82 | 1962 | if (!bss) { |
cffdd30d JL |
1963 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel, |
1964 | elems.ssid, elems.ssid_len); | |
f0706e82 JB |
1965 | if (!bss) |
1966 | return; | |
1967 | } else { | |
1968 | #if 0 | |
1969 | /* TODO: order by RSSI? */ | |
1970 | spin_lock_bh(&local->sta_bss_lock); | |
1971 | list_move_tail(&bss->list, &local->sta_bss_list); | |
1972 | spin_unlock_bh(&local->sta_bss_lock); | |
1973 | #endif | |
1974 | } | |
1975 | ||
1976 | if (bss->probe_resp && beacon) { | |
1977 | /* Do not allow beacon to override data from Probe Response. */ | |
1978 | ieee80211_rx_bss_put(dev, bss); | |
1979 | return; | |
1980 | } | |
1981 | ||
5628221c DD |
1982 | /* save the ERP value so that it is available at association time */ |
1983 | if (elems.erp_info && elems.erp_info_len >= 1) { | |
1984 | bss->erp_value = elems.erp_info[0]; | |
1985 | bss->has_erp_value = 1; | |
1986 | } | |
1987 | ||
f0706e82 JB |
1988 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
1989 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 JB |
1990 | |
1991 | bss->supp_rates_len = 0; | |
1992 | if (elems.supp_rates) { | |
1993 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
1994 | if (clen > elems.supp_rates_len) | |
1995 | clen = elems.supp_rates_len; | |
1996 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates, | |
1997 | clen); | |
1998 | bss->supp_rates_len += clen; | |
1999 | } | |
2000 | if (elems.ext_supp_rates) { | |
2001 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2002 | if (clen > elems.ext_supp_rates_len) | |
2003 | clen = elems.ext_supp_rates_len; | |
2004 | memcpy(&bss->supp_rates[bss->supp_rates_len], | |
2005 | elems.ext_supp_rates, clen); | |
2006 | bss->supp_rates_len += clen; | |
2007 | } | |
2008 | ||
2009 | if (elems.wpa && | |
2010 | (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || | |
2011 | memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { | |
2012 | kfree(bss->wpa_ie); | |
2013 | bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC); | |
2014 | if (bss->wpa_ie) { | |
2015 | memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2); | |
2016 | bss->wpa_ie_len = elems.wpa_len + 2; | |
2017 | } else | |
2018 | bss->wpa_ie_len = 0; | |
2019 | } else if (!elems.wpa && bss->wpa_ie) { | |
2020 | kfree(bss->wpa_ie); | |
2021 | bss->wpa_ie = NULL; | |
2022 | bss->wpa_ie_len = 0; | |
2023 | } | |
2024 | ||
2025 | if (elems.rsn && | |
2026 | (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len || | |
2027 | memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) { | |
2028 | kfree(bss->rsn_ie); | |
2029 | bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC); | |
2030 | if (bss->rsn_ie) { | |
2031 | memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2); | |
2032 | bss->rsn_ie_len = elems.rsn_len + 2; | |
2033 | } else | |
2034 | bss->rsn_ie_len = 0; | |
2035 | } else if (!elems.rsn && bss->rsn_ie) { | |
2036 | kfree(bss->rsn_ie); | |
2037 | bss->rsn_ie = NULL; | |
2038 | bss->rsn_ie_len = 0; | |
2039 | } | |
2040 | ||
2041 | if (elems.wmm_param && | |
2042 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || | |
2043 | memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { | |
2044 | kfree(bss->wmm_ie); | |
2045 | bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC); | |
2046 | if (bss->wmm_ie) { | |
2047 | memcpy(bss->wmm_ie, elems.wmm_param - 2, | |
2048 | elems.wmm_param_len + 2); | |
2049 | bss->wmm_ie_len = elems.wmm_param_len + 2; | |
2050 | } else | |
2051 | bss->wmm_ie_len = 0; | |
2052 | } else if (!elems.wmm_param && bss->wmm_ie) { | |
2053 | kfree(bss->wmm_ie); | |
2054 | bss->wmm_ie = NULL; | |
2055 | bss->wmm_ie_len = 0; | |
2056 | } | |
c7153508 RR |
2057 | if (elems.ht_cap_elem && |
2058 | (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || | |
2059 | memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { | |
2060 | kfree(bss->ht_ie); | |
2061 | bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); | |
2062 | if (bss->ht_ie) { | |
2063 | memcpy(bss->ht_ie, elems.ht_cap_elem - 2, | |
2064 | elems.ht_cap_elem_len + 2); | |
2065 | bss->ht_ie_len = elems.ht_cap_elem_len + 2; | |
2066 | } else | |
2067 | bss->ht_ie_len = 0; | |
2068 | } else if (!elems.ht_cap_elem && bss->ht_ie) { | |
2069 | kfree(bss->ht_ie); | |
2070 | bss->ht_ie = NULL; | |
2071 | bss->ht_ie_len = 0; | |
2072 | } | |
f0706e82 JB |
2073 | |
2074 | bss->hw_mode = rx_status->phymode; | |
f0706e82 JB |
2075 | bss->freq = rx_status->freq; |
2076 | if (channel != rx_status->channel && | |
2077 | (bss->hw_mode == MODE_IEEE80211G || | |
2078 | bss->hw_mode == MODE_IEEE80211B) && | |
2079 | channel >= 1 && channel <= 14) { | |
2080 | static const int freq_list[] = { | |
2081 | 2412, 2417, 2422, 2427, 2432, 2437, 2442, | |
2082 | 2447, 2452, 2457, 2462, 2467, 2472, 2484 | |
2083 | }; | |
2084 | /* IEEE 802.11g/b mode can receive packets from neighboring | |
2085 | * channels, so map the channel into frequency. */ | |
2086 | bss->freq = freq_list[channel - 1]; | |
2087 | } | |
2088 | bss->timestamp = timestamp; | |
2089 | bss->last_update = jiffies; | |
2090 | bss->rssi = rx_status->ssi; | |
2091 | bss->signal = rx_status->signal; | |
2092 | bss->noise = rx_status->noise; | |
2093 | if (!beacon) | |
2094 | bss->probe_resp++; | |
2095 | ieee80211_rx_bss_put(dev, bss); | |
2096 | } | |
2097 | ||
2098 | ||
2099 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2100 | struct ieee80211_mgmt *mgmt, | |
2101 | size_t len, | |
2102 | struct ieee80211_rx_status *rx_status) | |
2103 | { | |
2104 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0); | |
2105 | } | |
2106 | ||
2107 | ||
2108 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2109 | struct ieee80211_mgmt *mgmt, | |
2110 | size_t len, | |
2111 | struct ieee80211_rx_status *rx_status) | |
2112 | { | |
f0706e82 JB |
2113 | struct ieee80211_sub_if_data *sdata; |
2114 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
2115 | size_t baselen; |
2116 | struct ieee802_11_elems elems; | |
d3c990fb RR |
2117 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
2118 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 2119 | u32 changed = 0; |
f0706e82 JB |
2120 | |
2121 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); | |
2122 | ||
2123 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
51fb61e7 | 2124 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2125 | return; |
2126 | ifsta = &sdata->u.sta; | |
2127 | ||
d6f2da5b | 2128 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
2129 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
2130 | return; | |
2131 | ||
2132 | /* Process beacon from the current BSS */ | |
2133 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2134 | if (baselen > len) | |
2135 | return; | |
2136 | ||
67a4cce4 | 2137 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2138 | |
5628221c | 2139 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2140 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
216bce90 VK |
2141 | else { |
2142 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
2143 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
2144 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
2145 | } | |
f0706e82 | 2146 | |
d3c990fb RR |
2147 | if (elems.ht_cap_elem && elems.ht_info_elem && |
2148 | elems.wmm_param && local->ops->conf_ht && | |
2149 | conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { | |
2150 | struct ieee80211_ht_bss_info bss_info; | |
2151 | ||
2152 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2153 | (struct ieee80211_ht_addt_info *) | |
2154 | elems.ht_info_elem, &bss_info); | |
2155 | /* check if AP changed bss inforamation */ | |
2156 | if ((conf->ht_bss_conf.primary_channel != | |
2157 | bss_info.primary_channel) || | |
2158 | (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) || | |
2159 | (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode)) | |
2160 | ieee80211_hw_config_ht(local, 1, &conf->ht_conf, | |
2161 | &bss_info); | |
2162 | } | |
2163 | ||
d6f2da5b | 2164 | if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
2165 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2166 | elems.wmm_param_len); | |
2167 | } | |
471b3efd JB |
2168 | |
2169 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 JB |
2170 | } |
2171 | ||
2172 | ||
2173 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
2174 | struct ieee80211_if_sta *ifsta, | |
2175 | struct ieee80211_mgmt *mgmt, | |
2176 | size_t len, | |
2177 | struct ieee80211_rx_status *rx_status) | |
2178 | { | |
2179 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2180 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2181 | int tx_last_beacon; | |
2182 | struct sk_buff *skb; | |
2183 | struct ieee80211_mgmt *resp; | |
2184 | u8 *pos, *end; | |
0795af57 JP |
2185 | DECLARE_MAC_BUF(mac); |
2186 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2187 | DECLARE_MAC_BUF(mac2); | |
2188 | DECLARE_MAC_BUF(mac3); | |
2189 | #endif | |
f0706e82 | 2190 | |
51fb61e7 | 2191 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
2192 | ifsta->state != IEEE80211_IBSS_JOINED || |
2193 | len < 24 + 2 || !ifsta->probe_resp) | |
2194 | return; | |
2195 | ||
2196 | if (local->ops->tx_last_beacon) | |
2197 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2198 | else | |
2199 | tx_last_beacon = 1; | |
2200 | ||
2201 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2202 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2203 | "%s (tx_last_beacon=%d)\n", | |
2204 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
2205 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
2206 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2207 | ||
2208 | if (!tx_last_beacon) | |
2209 | return; | |
2210 | ||
2211 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
2212 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
2213 | return; | |
2214 | ||
2215 | end = ((u8 *) mgmt) + len; | |
2216 | pos = mgmt->u.probe_req.variable; | |
2217 | if (pos[0] != WLAN_EID_SSID || | |
2218 | pos + 2 + pos[1] > end) { | |
2219 | if (net_ratelimit()) { | |
2220 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
0795af57 JP |
2221 | "from %s\n", |
2222 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
2223 | } |
2224 | return; | |
2225 | } | |
2226 | if (pos[1] != 0 && | |
2227 | (pos[1] != ifsta->ssid_len || | |
2228 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
2229 | /* Ignore ProbeReq for foreign SSID */ | |
2230 | return; | |
2231 | } | |
2232 | ||
2233 | /* Reply with ProbeResp */ | |
0ec0b7ac | 2234 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
2235 | if (!skb) |
2236 | return; | |
2237 | ||
2238 | resp = (struct ieee80211_mgmt *) skb->data; | |
2239 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
2240 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2241 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
2242 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
2243 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2244 | ieee80211_sta_tx(dev, skb, 0); | |
2245 | } | |
2246 | ||
4e20cb29 JB |
2247 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
2248 | struct ieee80211_if_sta *ifsta, | |
2249 | struct ieee80211_mgmt *mgmt, | |
2250 | size_t len) | |
9f985b0e RR |
2251 | { |
2252 | if (len < IEEE80211_MIN_ACTION_SIZE) | |
2253 | return; | |
2254 | ||
2255 | switch (mgmt->u.action.category) { | |
2256 | case WLAN_CATEGORY_BACK: | |
2257 | switch (mgmt->u.action.u.addba_req.action_code) { | |
2258 | case WLAN_ACTION_ADDBA_REQ: | |
2259 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2260 | sizeof(mgmt->u.action.u.addba_req))) | |
2261 | break; | |
2262 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
2263 | break; | |
688b88a4 RR |
2264 | case WLAN_ACTION_DELBA: |
2265 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2266 | sizeof(mgmt->u.action.u.delba))) | |
2267 | break; | |
2268 | ieee80211_sta_process_delba(dev, mgmt, len); | |
2269 | break; | |
9f985b0e RR |
2270 | default: |
2271 | if (net_ratelimit()) | |
688b88a4 | 2272 | printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n", |
9f985b0e RR |
2273 | dev->name); |
2274 | break; | |
2275 | } | |
2276 | break; | |
2277 | default: | |
2278 | break; | |
2279 | } | |
2280 | } | |
f0706e82 JB |
2281 | |
2282 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
2283 | struct ieee80211_rx_status *rx_status) | |
2284 | { | |
2285 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2286 | struct ieee80211_sub_if_data *sdata; | |
2287 | struct ieee80211_if_sta *ifsta; | |
2288 | struct ieee80211_mgmt *mgmt; | |
2289 | u16 fc; | |
2290 | ||
2291 | if (skb->len < 24) | |
2292 | goto fail; | |
2293 | ||
2294 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2295 | ifsta = &sdata->u.sta; | |
2296 | ||
2297 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2298 | fc = le16_to_cpu(mgmt->frame_control); | |
2299 | ||
2300 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2301 | case IEEE80211_STYPE_PROBE_REQ: | |
2302 | case IEEE80211_STYPE_PROBE_RESP: | |
2303 | case IEEE80211_STYPE_BEACON: | |
2304 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); | |
2305 | case IEEE80211_STYPE_AUTH: | |
2306 | case IEEE80211_STYPE_ASSOC_RESP: | |
2307 | case IEEE80211_STYPE_REASSOC_RESP: | |
2308 | case IEEE80211_STYPE_DEAUTH: | |
2309 | case IEEE80211_STYPE_DISASSOC: | |
9f985b0e | 2310 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
2311 | skb_queue_tail(&ifsta->skb_queue, skb); |
2312 | queue_work(local->hw.workqueue, &ifsta->work); | |
2313 | return; | |
2314 | default: | |
2315 | printk(KERN_DEBUG "%s: received unknown management frame - " | |
2316 | "stype=%d\n", dev->name, | |
2317 | (fc & IEEE80211_FCTL_STYPE) >> 4); | |
2318 | break; | |
2319 | } | |
2320 | ||
2321 | fail: | |
2322 | kfree_skb(skb); | |
2323 | } | |
2324 | ||
2325 | ||
2326 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
2327 | struct sk_buff *skb) | |
2328 | { | |
2329 | struct ieee80211_rx_status *rx_status; | |
2330 | struct ieee80211_sub_if_data *sdata; | |
2331 | struct ieee80211_if_sta *ifsta; | |
2332 | struct ieee80211_mgmt *mgmt; | |
2333 | u16 fc; | |
2334 | ||
2335 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2336 | ifsta = &sdata->u.sta; | |
2337 | ||
2338 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
2339 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2340 | fc = le16_to_cpu(mgmt->frame_control); | |
2341 | ||
2342 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2343 | case IEEE80211_STYPE_PROBE_REQ: | |
2344 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
2345 | rx_status); | |
2346 | break; | |
2347 | case IEEE80211_STYPE_PROBE_RESP: | |
2348 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
2349 | break; | |
2350 | case IEEE80211_STYPE_BEACON: | |
2351 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
2352 | break; | |
2353 | case IEEE80211_STYPE_AUTH: | |
2354 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
2355 | break; | |
2356 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 2357 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
2358 | break; |
2359 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 2360 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
2361 | break; |
2362 | case IEEE80211_STYPE_DEAUTH: | |
2363 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
2364 | break; | |
2365 | case IEEE80211_STYPE_DISASSOC: | |
2366 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
2367 | break; | |
9f985b0e RR |
2368 | case IEEE80211_STYPE_ACTION: |
2369 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len); | |
2370 | break; | |
f0706e82 JB |
2371 | } |
2372 | ||
2373 | kfree_skb(skb); | |
2374 | } | |
2375 | ||
2376 | ||
ece8eddd ZY |
2377 | ieee80211_txrx_result |
2378 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, | |
2379 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
2380 | { |
2381 | struct ieee80211_mgmt *mgmt; | |
2382 | u16 fc; | |
2383 | ||
ece8eddd ZY |
2384 | if (skb->len < 2) |
2385 | return TXRX_DROP; | |
f0706e82 JB |
2386 | |
2387 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2388 | fc = le16_to_cpu(mgmt->frame_control); | |
2389 | ||
ece8eddd ZY |
2390 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) |
2391 | return TXRX_CONTINUE; | |
2392 | ||
2393 | if (skb->len < 24) | |
2394 | return TXRX_DROP; | |
2395 | ||
f0706e82 JB |
2396 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { |
2397 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) { | |
2398 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, | |
2399 | skb->len, rx_status); | |
ece8eddd ZY |
2400 | dev_kfree_skb(skb); |
2401 | return TXRX_QUEUED; | |
f0706e82 JB |
2402 | } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { |
2403 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, | |
2404 | rx_status); | |
ece8eddd ZY |
2405 | dev_kfree_skb(skb); |
2406 | return TXRX_QUEUED; | |
f0706e82 JB |
2407 | } |
2408 | } | |
ece8eddd | 2409 | return TXRX_CONTINUE; |
f0706e82 JB |
2410 | } |
2411 | ||
2412 | ||
2413 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
2414 | { | |
2415 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2416 | int active = 0; | |
2417 | struct sta_info *sta; | |
2418 | ||
be8755e1 | 2419 | read_lock_bh(&local->sta_lock); |
f0706e82 JB |
2420 | list_for_each_entry(sta, &local->sta_list, list) { |
2421 | if (sta->dev == dev && | |
2422 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, | |
2423 | jiffies)) { | |
2424 | active++; | |
2425 | break; | |
2426 | } | |
2427 | } | |
be8755e1 | 2428 | read_unlock_bh(&local->sta_lock); |
f0706e82 JB |
2429 | |
2430 | return active; | |
2431 | } | |
2432 | ||
2433 | ||
2434 | static void ieee80211_sta_expire(struct net_device *dev) | |
2435 | { | |
2436 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2437 | struct sta_info *sta, *tmp; | |
be8755e1 | 2438 | LIST_HEAD(tmp_list); |
0795af57 | 2439 | DECLARE_MAC_BUF(mac); |
f0706e82 | 2440 | |
be8755e1 | 2441 | write_lock_bh(&local->sta_lock); |
f0706e82 JB |
2442 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
2443 | if (time_after(jiffies, sta->last_rx + | |
2444 | IEEE80211_IBSS_INACTIVITY_LIMIT)) { | |
0795af57 JP |
2445 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
2446 | dev->name, print_mac(mac, sta->addr)); | |
be8755e1 MW |
2447 | __sta_info_get(sta); |
2448 | sta_info_remove(sta); | |
2449 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 2450 | } |
be8755e1 MW |
2451 | write_unlock_bh(&local->sta_lock); |
2452 | ||
2453 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) { | |
2454 | sta_info_free(sta); | |
2455 | sta_info_put(sta); | |
2456 | } | |
f0706e82 JB |
2457 | } |
2458 | ||
2459 | ||
2460 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
2461 | struct ieee80211_if_sta *ifsta) | |
2462 | { | |
2463 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2464 | ||
2465 | ieee80211_sta_expire(dev); | |
2466 | if (ieee80211_sta_active_ibss(dev)) | |
2467 | return; | |
2468 | ||
2469 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
2470 | "IBSS networks with same SSID (merge)\n", dev->name); | |
2471 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
2472 | } | |
2473 | ||
2474 | ||
2475 | void ieee80211_sta_timer(unsigned long data) | |
2476 | { | |
2477 | struct ieee80211_sub_if_data *sdata = | |
2478 | (struct ieee80211_sub_if_data *) data; | |
2479 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
2480 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
2481 | ||
2482 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2483 | queue_work(local->hw.workqueue, &ifsta->work); | |
2484 | } | |
2485 | ||
2486 | ||
2487 | void ieee80211_sta_work(struct work_struct *work) | |
2488 | { | |
2489 | struct ieee80211_sub_if_data *sdata = | |
2490 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
2491 | struct net_device *dev = sdata->dev; | |
2492 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2493 | struct ieee80211_if_sta *ifsta; | |
2494 | struct sk_buff *skb; | |
2495 | ||
2496 | if (!netif_running(dev)) | |
2497 | return; | |
2498 | ||
ece8eddd | 2499 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
2500 | return; |
2501 | ||
51fb61e7 JB |
2502 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
2503 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { | |
f0706e82 | 2504 | printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " |
51fb61e7 | 2505 | "(type=%d)\n", dev->name, sdata->vif.type); |
f0706e82 JB |
2506 | return; |
2507 | } | |
2508 | ifsta = &sdata->u.sta; | |
2509 | ||
2510 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
2511 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
2512 | ||
2513 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
2514 | ifsta->state != IEEE80211_ASSOCIATE && | |
2515 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
2516 | if (ifsta->scan_ssid_len) |
2517 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
2518 | else | |
2519 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
2520 | return; |
2521 | } | |
2522 | ||
2523 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
2524 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
2525 | return; | |
2526 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2527 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
2528 | return; | |
2529 | ||
2530 | switch (ifsta->state) { | |
2531 | case IEEE80211_DISABLED: | |
2532 | break; | |
2533 | case IEEE80211_AUTHENTICATE: | |
2534 | ieee80211_authenticate(dev, ifsta); | |
2535 | break; | |
2536 | case IEEE80211_ASSOCIATE: | |
2537 | ieee80211_associate(dev, ifsta); | |
2538 | break; | |
2539 | case IEEE80211_ASSOCIATED: | |
2540 | ieee80211_associated(dev, ifsta); | |
2541 | break; | |
2542 | case IEEE80211_IBSS_SEARCH: | |
2543 | ieee80211_sta_find_ibss(dev, ifsta); | |
2544 | break; | |
2545 | case IEEE80211_IBSS_JOINED: | |
2546 | ieee80211_sta_merge_ibss(dev, ifsta); | |
2547 | break; | |
2548 | default: | |
2549 | printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", | |
2550 | ifsta->state); | |
2551 | break; | |
2552 | } | |
2553 | ||
2554 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
2555 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
2556 | "mixed-cell disabled - disassociate\n", dev->name); | |
2557 | ||
2558 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
2559 | ieee80211_set_disassoc(dev, ifsta, 0); | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | ||
2564 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
2565 | struct ieee80211_if_sta *ifsta) | |
2566 | { | |
2567 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2568 | ||
2569 | if (local->ops->reset_tsf) { | |
2570 | /* Reset own TSF to allow time synchronization work. */ | |
2571 | local->ops->reset_tsf(local_to_hw(local)); | |
2572 | } | |
2573 | ||
2574 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
2575 | ||
2576 | ||
2577 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
2578 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2579 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2580 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2581 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2582 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
2583 | else | |
2584 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2585 | printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name, | |
2586 | ifsta->auth_alg); | |
2587 | ifsta->auth_transaction = -1; | |
d6f2da5b JS |
2588 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
2589 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
2590 | netif_carrier_off(dev); |
2591 | } | |
2592 | ||
2593 | ||
2594 | void ieee80211_sta_req_auth(struct net_device *dev, | |
2595 | struct ieee80211_if_sta *ifsta) | |
2596 | { | |
2597 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2598 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2599 | ||
51fb61e7 | 2600 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2601 | return; |
2602 | ||
d6f2da5b JS |
2603 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
2604 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
2605 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
2606 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
2607 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
2608 | queue_work(local->hw.workqueue, &ifsta->work); | |
2609 | } | |
2610 | } | |
2611 | ||
2612 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
2613 | const char *ssid, int ssid_len) | |
2614 | { | |
2615 | int tmp, hidden_ssid; | |
2616 | ||
48225709 MW |
2617 | if (ssid_len == ifsta->ssid_len && |
2618 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
2619 | return 1; |
2620 | ||
d6f2da5b | 2621 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
2622 | return 0; |
2623 | ||
2624 | hidden_ssid = 1; | |
2625 | tmp = ssid_len; | |
2626 | while (tmp--) { | |
2627 | if (ssid[tmp] != '\0') { | |
2628 | hidden_ssid = 0; | |
2629 | break; | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
2634 | return 1; | |
2635 | ||
2636 | if (ssid_len == 1 && ssid[0] == ' ') | |
2637 | return 1; | |
2638 | ||
2639 | return 0; | |
2640 | } | |
2641 | ||
2642 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
2643 | struct ieee80211_if_sta *ifsta) | |
2644 | { | |
2645 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2646 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2647 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
2648 | int top_rssi = 0, freq; | |
2649 | ||
d6f2da5b JS |
2650 | if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
2651 | IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) { | |
f0706e82 | 2652 | ifsta->state = IEEE80211_AUTHENTICATE; |
f0706e82 JB |
2653 | ieee80211_sta_reset_auth(dev, ifsta); |
2654 | return 0; | |
2655 | } | |
2656 | ||
2657 | spin_lock_bh(&local->sta_bss_lock); | |
2658 | freq = local->oper_channel->freq; | |
2659 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2660 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
2661 | continue; | |
2662 | ||
2663 | if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
2664 | !!sdata->default_key) | |
2665 | continue; | |
2666 | ||
d6f2da5b JS |
2667 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
2668 | bss->freq != freq) | |
f0706e82 JB |
2669 | continue; |
2670 | ||
d6f2da5b | 2671 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
2672 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
2673 | continue; | |
2674 | ||
d6f2da5b | 2675 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
2676 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
2677 | continue; | |
2678 | ||
2679 | if (!selected || top_rssi < bss->rssi) { | |
2680 | selected = bss; | |
2681 | top_rssi = bss->rssi; | |
2682 | } | |
2683 | } | |
2684 | if (selected) | |
2685 | atomic_inc(&selected->users); | |
2686 | spin_unlock_bh(&local->sta_bss_lock); | |
2687 | ||
2688 | if (selected) { | |
2689 | ieee80211_set_channel(local, -1, selected->freq); | |
d6f2da5b | 2690 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
2691 | ieee80211_sta_set_ssid(dev, selected->ssid, |
2692 | selected->ssid_len); | |
2693 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
2694 | ieee80211_rx_bss_put(dev, selected); | |
2695 | ifsta->state = IEEE80211_AUTHENTICATE; | |
f0706e82 JB |
2696 | ieee80211_sta_reset_auth(dev, ifsta); |
2697 | return 0; | |
2698 | } else { | |
2699 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 2700 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
2701 | ieee80211_sta_start_scan(dev, NULL, 0); |
2702 | else | |
2703 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
2704 | ifsta->ssid_len); | |
f0706e82 JB |
2705 | ifsta->state = IEEE80211_AUTHENTICATE; |
2706 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
2707 | } else | |
2708 | ifsta->state = IEEE80211_DISABLED; | |
2709 | } | |
f0706e82 JB |
2710 | return -1; |
2711 | } | |
2712 | ||
2713 | static int ieee80211_sta_join_ibss(struct net_device *dev, | |
2714 | struct ieee80211_if_sta *ifsta, | |
2715 | struct ieee80211_sta_bss *bss) | |
2716 | { | |
2717 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2718 | int res, rates, i, j; | |
2719 | struct sk_buff *skb; | |
2720 | struct ieee80211_mgmt *mgmt; | |
2721 | struct ieee80211_tx_control control; | |
f0706e82 | 2722 | struct ieee80211_hw_mode *mode; |
1abbe498 | 2723 | struct rate_selection ratesel; |
f0706e82 JB |
2724 | u8 *pos; |
2725 | struct ieee80211_sub_if_data *sdata; | |
2726 | ||
2727 | /* Remove possible STA entries from other IBSS networks. */ | |
2728 | sta_info_flush(local, NULL); | |
2729 | ||
2730 | if (local->ops->reset_tsf) { | |
2731 | /* Reset own TSF to allow time synchronization work. */ | |
2732 | local->ops->reset_tsf(local_to_hw(local)); | |
2733 | } | |
2734 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
2735 | res = ieee80211_if_config(dev); | |
2736 | if (res) | |
2737 | return res; | |
2738 | ||
2739 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2740 | ||
2741 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2742 | sdata->drop_unencrypted = bss->capability & | |
2743 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2744 | ||
2745 | res = ieee80211_set_channel(local, -1, bss->freq); | |
2746 | ||
2747 | if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) { | |
2748 | printk(KERN_DEBUG "%s: IBSS not allowed on channel %d " | |
2749 | "(%d MHz)\n", dev->name, local->hw.conf.channel, | |
2750 | local->hw.conf.freq); | |
2751 | return -1; | |
2752 | } | |
2753 | ||
2754 | /* Set beacon template based on scan results */ | |
2755 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); | |
2756 | do { | |
2757 | if (!skb) | |
2758 | break; | |
2759 | ||
2760 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2761 | ||
2762 | mgmt = (struct ieee80211_mgmt *) | |
2763 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2764 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2765 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2766 | IEEE80211_STYPE_BEACON); | |
2767 | memset(mgmt->da, 0xff, ETH_ALEN); | |
2768 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2769 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2770 | mgmt->u.beacon.beacon_int = | |
2771 | cpu_to_le16(local->hw.conf.beacon_int); | |
2772 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); | |
2773 | ||
2774 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2775 | *pos++ = WLAN_EID_SSID; | |
2776 | *pos++ = ifsta->ssid_len; | |
2777 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2778 | ||
2779 | rates = bss->supp_rates_len; | |
2780 | if (rates > 8) | |
2781 | rates = 8; | |
2782 | pos = skb_put(skb, 2 + rates); | |
2783 | *pos++ = WLAN_EID_SUPP_RATES; | |
2784 | *pos++ = rates; | |
2785 | memcpy(pos, bss->supp_rates, rates); | |
2786 | ||
2787 | pos = skb_put(skb, 2 + 1); | |
2788 | *pos++ = WLAN_EID_DS_PARAMS; | |
2789 | *pos++ = 1; | |
2790 | *pos++ = bss->channel; | |
2791 | ||
2792 | pos = skb_put(skb, 2 + 2); | |
2793 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2794 | *pos++ = 2; | |
2795 | /* FIX: set ATIM window based on scan results */ | |
2796 | *pos++ = 0; | |
2797 | *pos++ = 0; | |
2798 | ||
2799 | if (bss->supp_rates_len > 8) { | |
2800 | rates = bss->supp_rates_len - 8; | |
2801 | pos = skb_put(skb, 2 + rates); | |
2802 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2803 | *pos++ = rates; | |
2804 | memcpy(pos, &bss->supp_rates[8], rates); | |
2805 | } | |
2806 | ||
2807 | memset(&control, 0, sizeof(control)); | |
1abbe498 MN |
2808 | rate_control_get_rate(dev, local->oper_hw_mode, skb, &ratesel); |
2809 | if (!ratesel.rate) { | |
f0706e82 JB |
2810 | printk(KERN_DEBUG "%s: Failed to determine TX rate " |
2811 | "for IBSS beacon\n", dev->name); | |
2812 | break; | |
2813 | } | |
0f7054e3 | 2814 | control.vif = &sdata->vif; |
13262ffd | 2815 | control.tx_rate = |
471b3efd | 2816 | (sdata->bss_conf.use_short_preamble && |
1abbe498 MN |
2817 | (ratesel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ? |
2818 | ratesel.rate->val2 : ratesel.rate->val; | |
f0706e82 JB |
2819 | control.antenna_sel_tx = local->hw.conf.antenna_sel_tx; |
2820 | control.power_level = local->hw.conf.power_level; | |
2821 | control.flags |= IEEE80211_TXCTL_NO_ACK; | |
2822 | control.retry_limit = 1; | |
2823 | ||
2824 | ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); | |
2825 | if (ifsta->probe_resp) { | |
2826 | mgmt = (struct ieee80211_mgmt *) | |
2827 | ifsta->probe_resp->data; | |
2828 | mgmt->frame_control = | |
2829 | IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2830 | IEEE80211_STYPE_PROBE_RESP); | |
2831 | } else { | |
2832 | printk(KERN_DEBUG "%s: Could not allocate ProbeResp " | |
2833 | "template for IBSS\n", dev->name); | |
2834 | } | |
2835 | ||
2836 | if (local->ops->beacon_update && | |
2837 | local->ops->beacon_update(local_to_hw(local), | |
2838 | skb, &control) == 0) { | |
2839 | printk(KERN_DEBUG "%s: Configured IBSS beacon " | |
2840 | "template based on scan results\n", dev->name); | |
2841 | skb = NULL; | |
2842 | } | |
2843 | ||
2844 | rates = 0; | |
2845 | mode = local->oper_hw_mode; | |
2846 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2847 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
f0706e82 JB |
2848 | for (j = 0; j < mode->num_rates; j++) |
2849 | if (mode->rates[j].rate == bitrate) | |
2850 | rates |= BIT(j); | |
2851 | } | |
2852 | ifsta->supp_rates_bits = rates; | |
2853 | } while (0); | |
2854 | ||
2855 | if (skb) { | |
2856 | printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " | |
2857 | "template\n", dev->name); | |
2858 | dev_kfree_skb(skb); | |
2859 | } | |
2860 | ||
2861 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2862 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2863 | ||
2864 | ieee80211_rx_bss_put(dev, bss); | |
2865 | ||
2866 | return res; | |
2867 | } | |
2868 | ||
2869 | ||
2870 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
2871 | struct ieee80211_if_sta *ifsta) | |
2872 | { | |
2873 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2874 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 2875 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 JB |
2876 | struct ieee80211_hw_mode *mode; |
2877 | u8 bssid[ETH_ALEN], *pos; | |
2878 | int i; | |
0795af57 | 2879 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
2880 | |
2881 | #if 0 | |
2882 | /* Easier testing, use fixed BSSID. */ | |
2883 | memset(bssid, 0xfe, ETH_ALEN); | |
2884 | #else | |
2885 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
2886 | * own MAC address to make sure that devices that do not have proper | |
2887 | * random number generator get different BSSID. */ | |
2888 | get_random_bytes(bssid, ETH_ALEN); | |
2889 | for (i = 0; i < ETH_ALEN; i++) | |
2890 | bssid[i] ^= dev->dev_addr[i]; | |
2891 | bssid[0] &= ~0x01; | |
2892 | bssid[0] |= 0x02; | |
2893 | #endif | |
2894 | ||
0795af57 JP |
2895 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
2896 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 2897 | |
cffdd30d JL |
2898 | bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel, |
2899 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); | |
f0706e82 JB |
2900 | if (!bss) |
2901 | return -ENOMEM; | |
2902 | ||
f0706e82 JB |
2903 | mode = local->oper_hw_mode; |
2904 | ||
2905 | if (local->hw.conf.beacon_int == 0) | |
2906 | local->hw.conf.beacon_int = 100; | |
2907 | bss->beacon_int = local->hw.conf.beacon_int; | |
2908 | bss->hw_mode = local->hw.conf.phymode; | |
f0706e82 JB |
2909 | bss->freq = local->hw.conf.freq; |
2910 | bss->last_update = jiffies; | |
2911 | bss->capability = WLAN_CAPABILITY_IBSS; | |
2912 | if (sdata->default_key) { | |
2913 | bss->capability |= WLAN_CAPABILITY_PRIVACY; | |
2914 | } else | |
2915 | sdata->drop_unencrypted = 0; | |
2916 | bss->supp_rates_len = mode->num_rates; | |
2917 | pos = bss->supp_rates; | |
2918 | for (i = 0; i < mode->num_rates; i++) { | |
2919 | int rate = mode->rates[i].rate; | |
f0706e82 JB |
2920 | *pos++ = (u8) (rate / 5); |
2921 | } | |
2922 | ||
2923 | return ieee80211_sta_join_ibss(dev, ifsta, bss); | |
2924 | } | |
2925 | ||
2926 | ||
2927 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
2928 | struct ieee80211_if_sta *ifsta) | |
2929 | { | |
2930 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2931 | struct ieee80211_sta_bss *bss; | |
2932 | int found = 0; | |
2933 | u8 bssid[ETH_ALEN]; | |
2934 | int active_ibss; | |
0795af57 JP |
2935 | DECLARE_MAC_BUF(mac); |
2936 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2937 | |
2938 | if (ifsta->ssid_len == 0) | |
2939 | return -EINVAL; | |
2940 | ||
2941 | active_ibss = ieee80211_sta_active_ibss(dev); | |
2942 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2943 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
2944 | dev->name, active_ibss); | |
2945 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2946 | spin_lock_bh(&local->sta_bss_lock); | |
2947 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2948 | if (ifsta->ssid_len != bss->ssid_len || | |
2949 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
2950 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
2951 | continue; | |
2952 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2953 | printk(KERN_DEBUG " bssid=%s found\n", |
2954 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
2955 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2956 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
2957 | found = 1; | |
2958 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
2959 | break; | |
2960 | } | |
2961 | spin_unlock_bh(&local->sta_bss_lock); | |
2962 | ||
2963 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2964 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " |
2965 | "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid)); | |
f0706e82 JB |
2966 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2967 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && | |
cffdd30d JL |
2968 | (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel, |
2969 | ifsta->ssid, ifsta->ssid_len))) { | |
0795af57 | 2970 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 2971 | " based on configured SSID\n", |
0795af57 | 2972 | dev->name, print_mac(mac, bssid)); |
f0706e82 JB |
2973 | return ieee80211_sta_join_ibss(dev, ifsta, bss); |
2974 | } | |
2975 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2976 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
2977 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2978 | ||
2979 | /* Selected IBSS not found in current scan results - try to scan */ | |
2980 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
2981 | !ieee80211_sta_active_ibss(dev)) { | |
2982 | mod_timer(&ifsta->timer, jiffies + | |
2983 | IEEE80211_IBSS_MERGE_INTERVAL); | |
2984 | } else if (time_after(jiffies, local->last_scan_completed + | |
2985 | IEEE80211_SCAN_INTERVAL)) { | |
2986 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
2987 | "join\n", dev->name); | |
2988 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
2989 | ifsta->ssid_len); | |
2990 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
2991 | int interval = IEEE80211_SCAN_INTERVAL; | |
2992 | ||
2993 | if (time_after(jiffies, ifsta->ibss_join_req + | |
2994 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 2995 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
f0706e82 JB |
2996 | local->oper_channel->flag & IEEE80211_CHAN_W_IBSS) |
2997 | return ieee80211_sta_create_ibss(dev, ifsta); | |
d6f2da5b | 2998 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
f0706e82 JB |
2999 | printk(KERN_DEBUG "%s: IBSS not allowed on the" |
3000 | " configured channel %d (%d MHz)\n", | |
3001 | dev->name, local->hw.conf.channel, | |
3002 | local->hw.conf.freq); | |
3003 | } | |
3004 | ||
3005 | /* No IBSS found - decrease scan interval and continue | |
3006 | * scanning. */ | |
3007 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3008 | } | |
3009 | ||
3010 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3011 | mod_timer(&ifsta->timer, jiffies + interval); | |
3012 | return 0; | |
3013 | } | |
3014 | ||
3015 | return 0; | |
3016 | } | |
3017 | ||
3018 | ||
3019 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3020 | { | |
3021 | struct ieee80211_sub_if_data *sdata; | |
3022 | struct ieee80211_if_sta *ifsta; | |
3023 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3024 | ||
3025 | if (len > IEEE80211_MAX_SSID_LEN) | |
3026 | return -EINVAL; | |
3027 | ||
3028 | /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is | |
3029 | * not defined. */ | |
3030 | if (local->ops->conf_tx) { | |
3031 | struct ieee80211_tx_queue_params qparam; | |
3032 | int i; | |
3033 | ||
3034 | memset(&qparam, 0, sizeof(qparam)); | |
3035 | /* TODO: are these ok defaults for all hw_modes? */ | |
3036 | qparam.aifs = 2; | |
3037 | qparam.cw_min = | |
3038 | local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15; | |
3039 | qparam.cw_max = 1023; | |
3040 | qparam.burst_time = 0; | |
3041 | for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++) | |
3042 | { | |
3043 | local->ops->conf_tx(local_to_hw(local), | |
3044 | i + IEEE80211_TX_QUEUE_DATA0, | |
3045 | &qparam); | |
3046 | } | |
3047 | /* IBSS uses different parameters for Beacon sending */ | |
3048 | qparam.cw_min++; | |
3049 | qparam.cw_min *= 2; | |
3050 | qparam.cw_min--; | |
3051 | local->ops->conf_tx(local_to_hw(local), | |
3052 | IEEE80211_TX_QUEUE_BEACON, &qparam); | |
3053 | } | |
3054 | ||
3055 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3056 | ifsta = &sdata->u.sta; | |
3057 | ||
3058 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) | |
d6f2da5b | 3059 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
3060 | memcpy(ifsta->ssid, ssid, len); |
3061 | memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len); | |
3062 | ifsta->ssid_len = len; | |
3063 | ||
d6f2da5b JS |
3064 | if (len) |
3065 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3066 | else | |
3067 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
51fb61e7 | 3068 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3069 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3070 | ifsta->ibss_join_req = jiffies; |
3071 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3072 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3073 | } | |
3074 | return 0; | |
3075 | } | |
3076 | ||
3077 | ||
3078 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3079 | { | |
3080 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3081 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3082 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3083 | *len = ifsta->ssid_len; | |
3084 | return 0; | |
3085 | } | |
3086 | ||
3087 | ||
3088 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3089 | { | |
3090 | struct ieee80211_sub_if_data *sdata; | |
3091 | struct ieee80211_if_sta *ifsta; | |
3092 | int res; | |
3093 | ||
3094 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3095 | ifsta = &sdata->u.sta; | |
3096 | ||
3097 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3098 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
3099 | res = ieee80211_if_config(dev); | |
3100 | if (res) { | |
3101 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3102 | "the low-level driver\n", dev->name); | |
3103 | return res; | |
3104 | } | |
3105 | } | |
3106 | ||
d6f2da5b JS |
3107 | if (is_valid_ether_addr(bssid)) |
3108 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3109 | else |
d6f2da5b JS |
3110 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3111 | ||
f0706e82 JB |
3112 | return 0; |
3113 | } | |
3114 | ||
3115 | ||
3116 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3117 | struct ieee80211_sub_if_data *sdata, | |
3118 | int powersave) | |
3119 | { | |
3120 | struct sk_buff *skb; | |
3121 | struct ieee80211_hdr *nullfunc; | |
3122 | u16 fc; | |
3123 | ||
3124 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3125 | if (!skb) { | |
3126 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3127 | "frame\n", sdata->dev->name); | |
3128 | return; | |
3129 | } | |
3130 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3131 | ||
3132 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3133 | memset(nullfunc, 0, 24); | |
3134 | fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
3135 | IEEE80211_FCTL_TODS; | |
3136 | if (powersave) | |
3137 | fc |= IEEE80211_FCTL_PM; | |
3138 | nullfunc->frame_control = cpu_to_le16(fc); | |
3139 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); | |
3140 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3141 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3142 | ||
3143 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3144 | } | |
3145 | ||
3146 | ||
3147 | void ieee80211_scan_completed(struct ieee80211_hw *hw) | |
3148 | { | |
3149 | struct ieee80211_local *local = hw_to_local(hw); | |
3150 | struct net_device *dev = local->scan_dev; | |
3151 | struct ieee80211_sub_if_data *sdata; | |
3152 | union iwreq_data wrqu; | |
3153 | ||
3154 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3155 | memset(&wrqu, 0, sizeof(wrqu)); |
3156 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3157 | |
ece8eddd ZY |
3158 | if (local->sta_hw_scanning) { |
3159 | local->sta_hw_scanning = 0; | |
3160 | goto done; | |
3161 | } | |
3162 | ||
3163 | local->sta_sw_scanning = 0; | |
f0706e82 | 3164 | if (ieee80211_hw_config(local)) |
4b50e388 | 3165 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3166 | "channel after scan\n", dev->name); |
3167 | ||
4150c572 JB |
3168 | |
3169 | netif_tx_lock_bh(local->mdev); | |
3170 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; | |
3171 | local->ops->configure_filter(local_to_hw(local), | |
3172 | FIF_BCN_PRBRESP_PROMISC, | |
3173 | &local->filter_flags, | |
3174 | local->mdev->mc_count, | |
3175 | local->mdev->mc_list); | |
3176 | ||
3177 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 | 3178 | |
79010420 JB |
3179 | rcu_read_lock(); |
3180 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3181 | |
3182 | /* No need to wake the master device. */ | |
3183 | if (sdata->dev == local->mdev) | |
3184 | continue; | |
3185 | ||
51fb61e7 | 3186 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { |
d6f2da5b | 3187 | if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
3188 | ieee80211_send_nullfunc(local, sdata, 0); |
3189 | ieee80211_sta_timer((unsigned long)sdata); | |
3190 | } | |
14042cbe | 3191 | |
f0706e82 JB |
3192 | netif_wake_queue(sdata->dev); |
3193 | } | |
79010420 | 3194 | rcu_read_unlock(); |
f0706e82 | 3195 | |
ece8eddd | 3196 | done: |
f0706e82 | 3197 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3198 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3199 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3200 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
f0706e82 JB |
3201 | (!ifsta->state == IEEE80211_IBSS_JOINED && |
3202 | !ieee80211_sta_active_ibss(dev))) | |
3203 | ieee80211_sta_find_ibss(dev, ifsta); | |
3204 | } | |
3205 | } | |
3206 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
3207 | ||
3208 | void ieee80211_sta_scan_work(struct work_struct *work) | |
3209 | { | |
3210 | struct ieee80211_local *local = | |
3211 | container_of(work, struct ieee80211_local, scan_work.work); | |
3212 | struct net_device *dev = local->scan_dev; | |
3213 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3214 | struct ieee80211_hw_mode *mode; | |
3215 | struct ieee80211_channel *chan; | |
3216 | int skip; | |
3217 | unsigned long next_delay = 0; | |
3218 | ||
ece8eddd | 3219 | if (!local->sta_sw_scanning) |
f0706e82 JB |
3220 | return; |
3221 | ||
3222 | switch (local->scan_state) { | |
3223 | case SCAN_SET_CHANNEL: | |
3224 | mode = local->scan_hw_mode; | |
3225 | if (local->scan_hw_mode->list.next == &local->modes_list && | |
3226 | local->scan_channel_idx >= mode->num_channels) { | |
3227 | ieee80211_scan_completed(local_to_hw(local)); | |
3228 | return; | |
3229 | } | |
3230 | skip = !(local->enabled_modes & (1 << mode->mode)); | |
3231 | chan = &mode->channels[local->scan_channel_idx]; | |
3232 | if (!(chan->flag & IEEE80211_CHAN_W_SCAN) || | |
51fb61e7 | 3233 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
3234 | !(chan->flag & IEEE80211_CHAN_W_IBSS)) || |
3235 | (local->hw_modes & local->enabled_modes & | |
3236 | (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B)) | |
3237 | skip = 1; | |
3238 | ||
3239 | if (!skip) { | |
3240 | #if 0 | |
3241 | printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n", | |
3242 | dev->name, chan->chan, chan->freq); | |
3243 | #endif | |
3244 | ||
3245 | local->scan_channel = chan; | |
3246 | if (ieee80211_hw_config(local)) { | |
3247 | printk(KERN_DEBUG "%s: failed to set channel " | |
3248 | "%d (%d MHz) for scan\n", dev->name, | |
3249 | chan->chan, chan->freq); | |
3250 | skip = 1; | |
3251 | } | |
3252 | } | |
3253 | ||
3254 | local->scan_channel_idx++; | |
3255 | if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) { | |
3256 | if (local->scan_hw_mode->list.next != &local->modes_list) { | |
3257 | local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next, | |
3258 | struct ieee80211_hw_mode, | |
3259 | list); | |
3260 | local->scan_channel_idx = 0; | |
3261 | } | |
3262 | } | |
3263 | ||
3264 | if (skip) | |
3265 | break; | |
3266 | ||
3267 | next_delay = IEEE80211_PROBE_DELAY + | |
3268 | usecs_to_jiffies(local->hw.channel_change_time); | |
3269 | local->scan_state = SCAN_SEND_PROBE; | |
3270 | break; | |
3271 | case SCAN_SEND_PROBE: | |
3272 | if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) { | |
3273 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
3274 | local->scan_ssid_len); | |
3275 | next_delay = IEEE80211_CHANNEL_TIME; | |
3276 | } else | |
3277 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; | |
3278 | local->scan_state = SCAN_SET_CHANNEL; | |
3279 | break; | |
3280 | } | |
3281 | ||
ece8eddd | 3282 | if (local->sta_sw_scanning) |
f0706e82 JB |
3283 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
3284 | next_delay); | |
3285 | } | |
3286 | ||
3287 | ||
3288 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
3289 | u8 *ssid, size_t ssid_len) | |
3290 | { | |
3291 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3292 | struct ieee80211_sub_if_data *sdata; | |
3293 | ||
3294 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
3295 | return -EINVAL; | |
3296 | ||
3297 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
3298 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
3299 | * BSSID: MACAddress | |
3300 | * SSID | |
3301 | * ScanType: ACTIVE, PASSIVE | |
3302 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
3303 | * a Probe frame during active scanning | |
3304 | * ChannelList | |
3305 | * MinChannelTime (>= ProbeDelay), in TU | |
3306 | * MaxChannelTime: (>= MinChannelTime), in TU | |
3307 | */ | |
3308 | ||
3309 | /* MLME-SCAN.confirm | |
3310 | * BSSDescriptionSet | |
3311 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
3312 | */ | |
3313 | ||
ece8eddd | 3314 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
3315 | if (local->scan_dev == dev) |
3316 | return 0; | |
3317 | return -EBUSY; | |
3318 | } | |
3319 | ||
3320 | if (local->ops->hw_scan) { | |
3321 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 3322 | ssid, ssid_len); |
f0706e82 | 3323 | if (!rc) { |
ece8eddd | 3324 | local->sta_hw_scanning = 1; |
f0706e82 JB |
3325 | local->scan_dev = dev; |
3326 | } | |
3327 | return rc; | |
3328 | } | |
3329 | ||
ece8eddd | 3330 | local->sta_sw_scanning = 1; |
f0706e82 | 3331 | |
79010420 JB |
3332 | rcu_read_lock(); |
3333 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3334 | |
3335 | /* Don't stop the master interface, otherwise we can't transmit | |
3336 | * probes! */ | |
3337 | if (sdata->dev == local->mdev) | |
3338 | continue; | |
3339 | ||
f0706e82 | 3340 | netif_stop_queue(sdata->dev); |
51fb61e7 | 3341 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 3342 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
3343 | ieee80211_send_nullfunc(local, sdata, 1); |
3344 | } | |
79010420 | 3345 | rcu_read_unlock(); |
f0706e82 JB |
3346 | |
3347 | if (ssid) { | |
3348 | local->scan_ssid_len = ssid_len; | |
3349 | memcpy(local->scan_ssid, ssid, ssid_len); | |
3350 | } else | |
3351 | local->scan_ssid_len = 0; | |
3352 | local->scan_state = SCAN_SET_CHANNEL; | |
3353 | local->scan_hw_mode = list_entry(local->modes_list.next, | |
3354 | struct ieee80211_hw_mode, | |
3355 | list); | |
3356 | local->scan_channel_idx = 0; | |
3357 | local->scan_dev = dev; | |
3358 | ||
4150c572 JB |
3359 | netif_tx_lock_bh(local->mdev); |
3360 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; | |
3361 | local->ops->configure_filter(local_to_hw(local), | |
3362 | FIF_BCN_PRBRESP_PROMISC, | |
3363 | &local->filter_flags, | |
3364 | local->mdev->mc_count, | |
3365 | local->mdev->mc_list); | |
3366 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 JB |
3367 | |
3368 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
3369 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
3370 | IEEE80211_CHANNEL_TIME); | |
3371 | ||
3372 | return 0; | |
3373 | } | |
3374 | ||
3375 | ||
3376 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
3377 | { | |
3378 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3379 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3380 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3381 | ||
51fb61e7 | 3382 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3383 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
3384 | ||
ece8eddd | 3385 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
3386 | if (local->scan_dev == dev) |
3387 | return 0; | |
3388 | return -EBUSY; | |
3389 | } | |
3390 | ||
a0af5f14 HS |
3391 | ifsta->scan_ssid_len = ssid_len; |
3392 | if (ssid_len) | |
3393 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
3394 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
3395 | queue_work(local->hw.workqueue, &ifsta->work); | |
3396 | return 0; | |
3397 | } | |
3398 | ||
3399 | static char * | |
3400 | ieee80211_sta_scan_result(struct net_device *dev, | |
3401 | struct ieee80211_sta_bss *bss, | |
3402 | char *current_ev, char *end_buf) | |
3403 | { | |
3404 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3405 | struct iw_event iwe; | |
3406 | ||
3407 | if (time_after(jiffies, | |
3408 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
3409 | return current_ev; | |
3410 | ||
3411 | if (!(local->enabled_modes & (1 << bss->hw_mode))) | |
3412 | return current_ev; | |
3413 | ||
f0706e82 JB |
3414 | memset(&iwe, 0, sizeof(iwe)); |
3415 | iwe.cmd = SIOCGIWAP; | |
3416 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
3417 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
3418 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3419 | IW_EV_ADDR_LEN); | |
3420 | ||
3421 | memset(&iwe, 0, sizeof(iwe)); | |
3422 | iwe.cmd = SIOCGIWESSID; | |
3423 | iwe.u.data.length = bss->ssid_len; | |
3424 | iwe.u.data.flags = 1; | |
3425 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3426 | bss->ssid); | |
3427 | ||
3428 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { | |
3429 | memset(&iwe, 0, sizeof(iwe)); | |
3430 | iwe.cmd = SIOCGIWMODE; | |
3431 | if (bss->capability & WLAN_CAPABILITY_ESS) | |
3432 | iwe.u.mode = IW_MODE_MASTER; | |
3433 | else | |
3434 | iwe.u.mode = IW_MODE_ADHOC; | |
3435 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3436 | IW_EV_UINT_LEN); | |
3437 | } | |
3438 | ||
3439 | memset(&iwe, 0, sizeof(iwe)); | |
3440 | iwe.cmd = SIOCGIWFREQ; | |
3441 | iwe.u.freq.m = bss->channel; | |
3442 | iwe.u.freq.e = 0; | |
3443 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3444 | IW_EV_FREQ_LEN); | |
3445 | iwe.u.freq.m = bss->freq * 100000; | |
3446 | iwe.u.freq.e = 1; | |
3447 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3448 | IW_EV_FREQ_LEN); | |
3449 | ||
3450 | memset(&iwe, 0, sizeof(iwe)); | |
3451 | iwe.cmd = IWEVQUAL; | |
3452 | iwe.u.qual.qual = bss->signal; | |
3453 | iwe.u.qual.level = bss->rssi; | |
3454 | iwe.u.qual.noise = bss->noise; | |
3455 | iwe.u.qual.updated = local->wstats_flags; | |
3456 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3457 | IW_EV_QUAL_LEN); | |
3458 | ||
3459 | memset(&iwe, 0, sizeof(iwe)); | |
3460 | iwe.cmd = SIOCGIWENCODE; | |
3461 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
3462 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
3463 | else | |
3464 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
3465 | iwe.u.data.length = 0; | |
3466 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, ""); | |
3467 | ||
3468 | if (bss && bss->wpa_ie) { | |
3469 | memset(&iwe, 0, sizeof(iwe)); | |
3470 | iwe.cmd = IWEVGENIE; | |
3471 | iwe.u.data.length = bss->wpa_ie_len; | |
3472 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3473 | bss->wpa_ie); | |
3474 | } | |
3475 | ||
3476 | if (bss && bss->rsn_ie) { | |
3477 | memset(&iwe, 0, sizeof(iwe)); | |
3478 | iwe.cmd = IWEVGENIE; | |
3479 | iwe.u.data.length = bss->rsn_ie_len; | |
3480 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3481 | bss->rsn_ie); | |
3482 | } | |
3483 | ||
3484 | if (bss && bss->supp_rates_len > 0) { | |
3485 | /* display all supported rates in readable format */ | |
3486 | char *p = current_ev + IW_EV_LCP_LEN; | |
3487 | int i; | |
3488 | ||
3489 | memset(&iwe, 0, sizeof(iwe)); | |
3490 | iwe.cmd = SIOCGIWRATE; | |
3491 | /* Those two flags are ignored... */ | |
3492 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
3493 | ||
3494 | for (i = 0; i < bss->supp_rates_len; i++) { | |
3495 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
3496 | 0x7f) * 500000); | |
3497 | p = iwe_stream_add_value(current_ev, p, | |
3498 | end_buf, &iwe, IW_EV_PARAM_LEN); | |
3499 | } | |
3500 | current_ev = p; | |
3501 | } | |
3502 | ||
3503 | if (bss) { | |
3504 | char *buf; | |
3505 | buf = kmalloc(30, GFP_ATOMIC); | |
3506 | if (buf) { | |
3507 | memset(&iwe, 0, sizeof(iwe)); | |
3508 | iwe.cmd = IWEVCUSTOM; | |
3509 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
3510 | iwe.u.data.length = strlen(buf); | |
3511 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
3512 | &iwe, buf); | |
3513 | kfree(buf); | |
3514 | } | |
3515 | } | |
3516 | ||
f0706e82 JB |
3517 | return current_ev; |
3518 | } | |
3519 | ||
3520 | ||
3521 | int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len) | |
3522 | { | |
3523 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3524 | char *current_ev = buf; | |
3525 | char *end_buf = buf + len; | |
3526 | struct ieee80211_sta_bss *bss; | |
3527 | ||
3528 | spin_lock_bh(&local->sta_bss_lock); | |
3529 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3530 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
3531 | spin_unlock_bh(&local->sta_bss_lock); | |
3532 | return -E2BIG; | |
3533 | } | |
3534 | current_ev = ieee80211_sta_scan_result(dev, bss, current_ev, | |
3535 | end_buf); | |
3536 | } | |
3537 | spin_unlock_bh(&local->sta_bss_lock); | |
3538 | return current_ev - buf; | |
3539 | } | |
3540 | ||
3541 | ||
3542 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
3543 | { | |
3544 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3545 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3546 | kfree(ifsta->extra_ie); | |
3547 | if (len == 0) { | |
3548 | ifsta->extra_ie = NULL; | |
3549 | ifsta->extra_ie_len = 0; | |
3550 | return 0; | |
3551 | } | |
3552 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
3553 | if (!ifsta->extra_ie) { | |
3554 | ifsta->extra_ie_len = 0; | |
3555 | return -ENOMEM; | |
3556 | } | |
3557 | memcpy(ifsta->extra_ie, ie, len); | |
3558 | ifsta->extra_ie_len = len; | |
3559 | return 0; | |
3560 | } | |
3561 | ||
3562 | ||
3563 | struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, | |
3564 | struct sk_buff *skb, u8 *bssid, | |
3565 | u8 *addr) | |
3566 | { | |
3567 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3568 | struct sta_info *sta; | |
91fa558b | 3569 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 3570 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3571 | |
3572 | /* TODO: Could consider removing the least recently used entry and | |
3573 | * allow new one to be added. */ | |
3574 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
3575 | if (net_ratelimit()) { | |
3576 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 3577 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
3578 | } |
3579 | return NULL; | |
3580 | } | |
3581 | ||
0795af57 | 3582 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 3583 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f0706e82 JB |
3584 | |
3585 | sta = sta_info_add(local, dev, addr, GFP_ATOMIC); | |
3586 | if (!sta) | |
3587 | return NULL; | |
3588 | ||
3589 | sta->supp_rates = sdata->u.sta.supp_rates_bits; | |
3590 | ||
3591 | rate_control_rate_init(sta, local); | |
3592 | ||
3593 | return sta; /* caller will call sta_info_put() */ | |
3594 | } | |
3595 | ||
3596 | ||
3597 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
3598 | { | |
3599 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3600 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3601 | ||
3602 | printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n", | |
3603 | dev->name, reason); | |
3604 | ||
51fb61e7 JB |
3605 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
3606 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
3607 | return -EINVAL; |
3608 | ||
3609 | ieee80211_send_deauth(dev, ifsta, reason); | |
3610 | ieee80211_set_disassoc(dev, ifsta, 1); | |
3611 | return 0; | |
3612 | } | |
3613 | ||
3614 | ||
3615 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
3616 | { | |
3617 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3618 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3619 | ||
3620 | printk(KERN_DEBUG "%s: disassociate(reason=%d)\n", | |
3621 | dev->name, reason); | |
3622 | ||
51fb61e7 | 3623 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3624 | return -EINVAL; |
3625 | ||
d6f2da5b | 3626 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
3627 | return -1; |
3628 | ||
3629 | ieee80211_send_disassoc(dev, ifsta, reason); | |
3630 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3631 | return 0; | |
3632 | } |