projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
p54: rename prism54xyz -> p54xyz
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / mac80211 / mlme.c
CommitLineData
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>
d0709a65 27#include <linux/rtnetlink.h>
f0706e82
JB		 28#include <net/iw_handler.h>
29#include <asm/types.h>
f0706e82
JB		 30
31#include <net/mac80211.h>
32#include "ieee80211_i.h"
2c8dccc7
JB		 33#include "rate.h"
34#include "led.h"
f709fc69 35#include "mesh.h"
f0706e82 36
6042a3e3 37#define IEEE80211_ASSOC_SCANS_MAX_TRIES 2
f0706e82
JB		 38#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
39#define IEEE80211_AUTH_MAX_TRIES 3
40#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
41#define IEEE80211_ASSOC_MAX_TRIES 3
42#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
f709fc69 43#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
f0706e82
JB		 44#define IEEE80211_PROBE_INTERVAL (60 * HZ)
45#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
46#define IEEE80211_SCAN_INTERVAL (2 * HZ)
47#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
872ba533 48#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
f0706e82
JB		 49
50#define IEEE80211_PROBE_DELAY (HZ / 33)
51#define IEEE80211_CHANNEL_TIME (HZ / 33)
52#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
53#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
54#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
55#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
f709fc69 56#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
f0706e82
JB		 57
58#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
59
60
f0706e82
JB		 61#define ERP_INFO_USE_PROTECTION BIT(1)
62
9f985b0e
RR		 63/* mgmt header + 1 byte action code */
64#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
65
66#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
67#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
68#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
688b88a4
RR		 69#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
70#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
9f985b0e 71
07db2183
RR		 72/* next values represent the buffer size for A-MPDU frame.
73 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
74#define IEEE80211_MIN_AMPDU_BUF 0x8
75#define IEEE80211_MAX_AMPDU_BUF 0x40
76
f698d856 77static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
f0706e82
JB		 78 u8 *ssid, size_t ssid_len);
79static struct ieee80211_sta_bss *
f698d856 80ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
cffdd30d 81 u8 *ssid, u8 ssid_len);
3e122be0 82static void ieee80211_rx_bss_put(struct ieee80211_local *local,
f0706e82 83 struct ieee80211_sta_bss *bss);
f698d856 84static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata,
f0706e82 85 struct ieee80211_if_sta *ifsta);
f698d856
JBG		 86static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata);
87static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *sdata,
f0706e82 88 u8 *ssid, size_t ssid_len);
f698d856 89static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
f0706e82 90 struct ieee80211_if_sta *ifsta);
712590de 91static void sta_rx_agg_session_timer_expired(unsigned long data);
f0706e82
JB		 92
93
ee385855
LCC		 94void ieee802_11_parse_elems(u8 *start, size_t len,
95 struct ieee802_11_elems *elems)
f0706e82
JB		 96{
97 size_t left = len;
98 u8 *pos = start;
f0706e82
JB		 99
100 memset(elems, 0, sizeof(*elems));
101
102 while (left >= 2) {
103 u8 id, elen;
104
105 id = *pos++;
106 elen = *pos++;
107 left -= 2;
108
67a4cce4
JL		 109 if (elen > left)
110 return;
f0706e82
JB		 111
112 switch (id) {
113 case WLAN_EID_SSID:
114 elems->ssid = pos;
115 elems->ssid_len = elen;
116 break;
117 case WLAN_EID_SUPP_RATES:
118 elems->supp_rates = pos;
119 elems->supp_rates_len = elen;
120 break;
121 case WLAN_EID_FH_PARAMS:
122 elems->fh_params = pos;
123 elems->fh_params_len = elen;
124 break;
125 case WLAN_EID_DS_PARAMS:
126 elems->ds_params = pos;
127 elems->ds_params_len = elen;
128 break;
129 case WLAN_EID_CF_PARAMS:
130 elems->cf_params = pos;
131 elems->cf_params_len = elen;
132 break;
133 case WLAN_EID_TIM:
134 elems->tim = pos;
135 elems->tim_len = elen;
136 break;
137 case WLAN_EID_IBSS_PARAMS:
138 elems->ibss_params = pos;
139 elems->ibss_params_len = elen;
140 break;
141 case WLAN_EID_CHALLENGE:
142 elems->challenge = pos;
143 elems->challenge_len = elen;
144 break;
145 case WLAN_EID_WPA:
146 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
147 pos[2] == 0xf2) {
148 /* Microsoft OUI (00:50:F2) */
149 if (pos[3] == 1) {
150 /* OUI Type 1 - WPA IE */
151 elems->wpa = pos;
152 elems->wpa_len = elen;
153 } else if (elen >= 5 && pos[3] == 2) {
154 if (pos[4] == 0) {
155 elems->wmm_info = pos;
156 elems->wmm_info_len = elen;
157 } else if (pos[4] == 1) {
158 elems->wmm_param = pos;
159 elems->wmm_param_len = elen;
160 }
161 }
162 }
163 break;
164 case WLAN_EID_RSN:
165 elems->rsn = pos;
166 elems->rsn_len = elen;
167 break;
168 case WLAN_EID_ERP_INFO:
169 elems->erp_info = pos;
170 elems->erp_info_len = elen;
171 break;
172 case WLAN_EID_EXT_SUPP_RATES:
173 elems->ext_supp_rates = pos;
174 elems->ext_supp_rates_len = elen;
175 break;
c7153508
RR		 176 case WLAN_EID_HT_CAPABILITY:
177 elems->ht_cap_elem = pos;
178 elems->ht_cap_elem_len = elen;
179 break;
180 case WLAN_EID_HT_EXTRA_INFO:
181 elems->ht_info_elem = pos;
182 elems->ht_info_elem_len = elen;
183 break;
ee385855
LCC		 184 case WLAN_EID_MESH_ID:
185 elems->mesh_id = pos;
186 elems->mesh_id_len = elen;
187 break;
188 case WLAN_EID_MESH_CONFIG:
189 elems->mesh_config = pos;
190 elems->mesh_config_len = elen;
191 break;
192 case WLAN_EID_PEER_LINK:
193 elems->peer_link = pos;
194 elems->peer_link_len = elen;
195 break;
196 case WLAN_EID_PREQ:
197 elems->preq = pos;
198 elems->preq_len = elen;
199 break;
200 case WLAN_EID_PREP:
201 elems->prep = pos;
202 elems->prep_len = elen;
203 break;
204 case WLAN_EID_PERR:
205 elems->perr = pos;
206 elems->perr_len = elen;
207 break;
f2df3859
AK		 208 case WLAN_EID_CHANNEL_SWITCH:
209 elems->ch_switch_elem = pos;
210 elems->ch_switch_elem_len = elen;
211 break;
212 case WLAN_EID_QUIET:
213 if (!elems->quiet_elem) {
214 elems->quiet_elem = pos;
215 elems->quiet_elem_len = elen;
216 }
217 elems->num_of_quiet_elem++;
218 break;
219 case WLAN_EID_COUNTRY:
220 elems->country_elem = pos;
221 elems->country_elem_len = elen;
222 break;
223 case WLAN_EID_PWR_CONSTRAINT:
224 elems->pwr_constr_elem = pos;
225 elems->pwr_constr_elem_len = elen;
226 break;
f0706e82 227 default:
f0706e82
JB		 228 break;
229 }
230
231 left -= elen;
232 pos += elen;
233 }
f0706e82
JB		 234}
235
236
f0706e82
JB		 237static int ecw2cw(int ecw)
238{
ac2bf324 239 return (1 << ecw) - 1;
f0706e82
JB		 240}
241
e2839d8f 242
f698d856 243static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
e2839d8f
VK		 244 struct ieee80211_sta_bss *bss,
245 int ibss)
246{
e2839d8f
VK		 247 struct ieee80211_local *local = sdata->local;
248 int i, have_higher_than_11mbit = 0;
249
250
251 /* cf. IEEE 802.11 9.2.12 */
252 for (i = 0; i < bss->supp_rates_len; i++)
253 if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
254 have_higher_than_11mbit = 1;
255
256 if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
257 have_higher_than_11mbit)
258 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
259 else
260 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
261
262
263 if (local->ops->conf_tx) {
264 struct ieee80211_tx_queue_params qparam;
e2839d8f
VK		 265
266 memset(&qparam, 0, sizeof(qparam));
267
268 qparam.aifs = 2;
269
270 if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
271 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
272 qparam.cw_min = 31;
273 else
274 qparam.cw_min = 15;
275
276 qparam.cw_max = 1023;
277 qparam.txop = 0;
278
e100bb64
JB		 279 for (i = 0; i < local_to_hw(local)->queues; i++)
280 local->ops->conf_tx(local_to_hw(local), i, &qparam);
e2839d8f
VK		 281 }
282}
283
f698d856 284static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
f0706e82
JB		 285 struct ieee80211_if_sta *ifsta,
286 u8 *wmm_param, size_t wmm_param_len)
287{
f0706e82
JB		 288 struct ieee80211_tx_queue_params params;
289 size_t left;
290 int count;
291 u8 *pos;
292
3434fbd3
JB		 293 if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED))
294 return;
295
296 if (!wmm_param)
297 return;
298
f0706e82
JB		 299 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
300 return;
301 count = wmm_param[6] & 0x0f;
302 if (count == ifsta->wmm_last_param_set)
303 return;
304 ifsta->wmm_last_param_set = count;
305
306 pos = wmm_param + 8;
307 left = wmm_param_len - 8;
308
309 memset(&params, 0, sizeof(params));
310
311 if (!local->ops->conf_tx)
312 return;
313
314 local->wmm_acm = 0;
315 for (; left >= 4; left -= 4, pos += 4) {
316 int aci = (pos[0] >> 5) & 0x03;
317 int acm = (pos[0] >> 4) & 0x01;
318 int queue;
319
320 switch (aci) {
321 case 1:
e100bb64 322 queue = 3;
988c0f72 323 if (acm)
f0706e82 324 local->wmm_acm |= BIT(0) | BIT(3);
f0706e82
JB		 325 break;
326 case 2:
e100bb64 327 queue = 1;
988c0f72 328 if (acm)
f0706e82 329 local->wmm_acm |= BIT(4) | BIT(5);
f0706e82
JB		 330 break;
331 case 3:
e100bb64 332 queue = 0;
988c0f72 333 if (acm)
f0706e82 334 local->wmm_acm |= BIT(6) | BIT(7);
f0706e82
JB		 335 break;
336 case 0:
337 default:
e100bb64 338 queue = 2;
988c0f72 339 if (acm)
f0706e82 340 local->wmm_acm |= BIT(1) | BIT(2);
f0706e82
JB		 341 break;
342 }
343
344 params.aifs = pos[0] & 0x0f;
345 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
346 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 347 params.txop = get_unaligned_le16(pos + 2);
f4ea83dd 348#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
f0706e82 349 printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
3330d7be 350 "cWmin=%d cWmax=%d txop=%d\n",
f698d856 351 local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
3330d7be
JB		 352 params.cw_max, params.txop);
353#endif
f0706e82
JB		 354 /* TODO: handle ACM (block TX, fallback to next lowest allowed
355 * AC for now) */
356 if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
357 printk(KERN_DEBUG "%s: failed to set TX queue "
f698d856 358 "parameters for queue %d\n", local->mdev->name, queue);
f0706e82
JB		 359 }
360 }
361}
362
50c4afb9
JL		 363static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
364 bool use_protection,
365 bool use_short_preamble)
5628221c 366{
471b3efd 367 struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
ebd74487 368#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
5628221c 369 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
0795af57 370 DECLARE_MAC_BUF(mac);
ebd74487 371#endif
471b3efd 372 u32 changed = 0;
5628221c 373
471b3efd 374 if (use_protection != bss_conf->use_cts_prot) {
f4ea83dd 375#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
5628221c
DD		 376 if (net_ratelimit()) {
377 printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
0795af57 378 "%s)\n",
471b3efd 379 sdata->dev->name,
5628221c 380 use_protection ? "enabled" : "disabled",
0795af57 381 print_mac(mac, ifsta->bssid));
5628221c 382 }
f4ea83dd 383#endif
471b3efd
JB		 384 bss_conf->use_cts_prot = use_protection;
385 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 386 }
7e9ed188 387
d43c7b37 388 if (use_short_preamble != bss_conf->use_short_preamble) {
f4ea83dd 389#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
7e9ed188
DD		 390 if (net_ratelimit()) {
391 printk(KERN_DEBUG "%s: switched to %s barker preamble"
0795af57 392 " (BSSID=%s)\n",
471b3efd 393 sdata->dev->name,
d43c7b37 394 use_short_preamble ? "short" : "long",
0795af57 395 print_mac(mac, ifsta->bssid));
7e9ed188 396 }
f4ea83dd 397#endif
d43c7b37 398 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 399 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 400 }
d9430a32 401
471b3efd 402 return changed;
5628221c
DD		 403}
404
50c4afb9
JL		 405static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
406 u8 erp_value)
407{
408 bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
409 bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
410
411 return ieee80211_handle_protect_preamb(sdata,
412 use_protection, use_short_preamble);
413}
414
415static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
416 struct ieee80211_sta_bss *bss)
417{
418 u32 changed = 0;
419
420 if (bss->has_erp_value)
421 changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value);
422 else {
423 u16 capab = bss->capability;
424 changed |= ieee80211_handle_protect_preamb(sdata, false,
425 (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
426 }
427
428 return changed;
429}
430
c7153508
RR		 431int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
432 struct ieee80211_ht_info *ht_info)
433{
434
435 if (ht_info == NULL)
436 return -EINVAL;
437
438 memset(ht_info, 0, sizeof(*ht_info));
439
440 if (ht_cap_ie) {
441 u8 ampdu_info = ht_cap_ie->ampdu_params_info;
442
443 ht_info->ht_supported = 1;
444 ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
445 ht_info->ampdu_factor =
446 ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
447 ht_info->ampdu_density =
448 (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
449 memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
450 } else
451 ht_info->ht_supported = 0;
452
453 return 0;
454}
455
456int ieee80211_ht_addt_info_ie_to_ht_bss_info(
457 struct ieee80211_ht_addt_info *ht_add_info_ie,
458 struct ieee80211_ht_bss_info *bss_info)
459{
460 if (bss_info == NULL)
461 return -EINVAL;
462
463 memset(bss_info, 0, sizeof(*bss_info));
464
465 if (ht_add_info_ie) {
466 u16 op_mode;
467 op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
468
469 bss_info->primary_channel = ht_add_info_ie->control_chan;
470 bss_info->bss_cap = ht_add_info_ie->ht_param;
471 bss_info->bss_op_mode = (u8)(op_mode & 0xff);
472 }
473
474 return 0;
475}
5628221c 476
f698d856 477static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 478 struct ieee80211_if_sta *ifsta)
479{
480 char *buf;
481 size_t len;
482 int i;
483 union iwreq_data wrqu;
484
485 if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
486 return;
487
488 buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
0ec0b7ac 489 ifsta->assocresp_ies_len), GFP_KERNEL);
f0706e82
JB		 490 if (!buf)
491 return;
492
493 len = sprintf(buf, "ASSOCINFO(");
494 if (ifsta->assocreq_ies) {
495 len += sprintf(buf + len, "ReqIEs=");
496 for (i = 0; i < ifsta->assocreq_ies_len; i++) {
497 len += sprintf(buf + len, "%02x",
498 ifsta->assocreq_ies[i]);
499 }
500 }
501 if (ifsta->assocresp_ies) {
502 if (ifsta->assocreq_ies)
503 len += sprintf(buf + len, " ");
504 len += sprintf(buf + len, "RespIEs=");
505 for (i = 0; i < ifsta->assocresp_ies_len; i++) {
506 len += sprintf(buf + len, "%02x",
507 ifsta->assocresp_ies[i]);
508 }
509 }
510 len += sprintf(buf + len, ")");
511
512 if (len > IW_CUSTOM_MAX) {
513 len = sprintf(buf, "ASSOCRESPIE=");
514 for (i = 0; i < ifsta->assocresp_ies_len; i++) {
515 len += sprintf(buf + len, "%02x",
516 ifsta->assocresp_ies[i]);
517 }
518 }
519
520 memset(&wrqu, 0, sizeof(wrqu));
521 wrqu.data.length = len;
f698d856 522 wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf);
f0706e82
JB		 523
524 kfree(buf);
525}
526
527
f698d856 528static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
d6f2da5b 529 struct ieee80211_if_sta *ifsta,
47f0c502 530 bool assoc)
f0706e82 531{
471b3efd 532 struct ieee80211_local *local = sdata->local;
38668c05 533 struct ieee80211_conf *conf = &local_to_hw(local)->conf;
f0706e82 534 union iwreq_data wrqu;
471b3efd 535 u32 changed = BSS_CHANGED_ASSOC;
f0706e82 536
f0706e82 537 if (assoc) {
5628221c 538 struct ieee80211_sta_bss *bss;
d6f2da5b
JS		 539
540 ifsta->flags |= IEEE80211_STA_ASSOCIATED;
541
51fb61e7 542 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
f0706e82 543 return;
5628221c 544
f698d856 545 bss = ieee80211_rx_bss_get(local, ifsta->bssid,
38668c05 546 conf->channel->center_freq,
cffdd30d 547 ifsta->ssid, ifsta->ssid_len);
5628221c 548 if (bss) {
21c0cbe7
TW		 549 /* set timing information */
550 sdata->bss_conf.beacon_int = bss->beacon_int;
551 sdata->bss_conf.timestamp = bss->timestamp;
98f7dfd8 552 sdata->bss_conf.dtim_period = bss->dtim_period;
21c0cbe7 553
50c4afb9 554 changed |= ieee80211_handle_bss_capability(sdata, bss);
21c0cbe7 555
3e122be0 556 ieee80211_rx_bss_put(local, bss);
5628221c
DD		 557 }
558
38668c05
TW		 559 if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
560 changed |= BSS_CHANGED_HT;
561 sdata->bss_conf.assoc_ht = 1;
562 sdata->bss_conf.ht_conf = &conf->ht_conf;
563 sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
564 }
565
d6f2da5b 566 ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
f0706e82
JB		 567 memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
568 memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
f698d856 569 ieee80211_sta_send_associnfo(sdata, ifsta);
f0706e82 570 } else {
f698d856
JBG		 571 netif_carrier_off(sdata->dev);
572 ieee80211_sta_tear_down_BA_sessions(sdata, ifsta->bssid);
d6f2da5b 573 ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
f698d856 574 changed |= ieee80211_reset_erp_info(sdata);
38668c05
TW		 575
576 sdata->bss_conf.assoc_ht = 0;
577 sdata->bss_conf.ht_conf = NULL;
578 sdata->bss_conf.ht_bss_conf = NULL;
579
f0706e82
JB		 580 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
581 }
f0706e82 582 ifsta->last_probe = jiffies;
47f0c502 583 ieee80211_led_assoc(local, assoc);
471b3efd 584
b2205256 585 sdata->bss_conf.assoc = assoc;
471b3efd 586 ieee80211_bss_info_change_notify(sdata, changed);
8db9369f
GC		 587
588 if (assoc)
f698d856 589 netif_carrier_on(sdata->dev);
8db9369f 590
41a7be48 591 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
f698d856 592 wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
f0706e82
JB		 593}
594
f698d856 595static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 596 struct ieee80211_if_sta *ifsta, int deauth)
597{
598 if (deauth)
599 ifsta->auth_tries = 0;
6042a3e3 600 ifsta->assoc_scan_tries = 0;
f0706e82 601 ifsta->assoc_tries = 0;
f698d856 602 ieee80211_set_associated(sdata, ifsta, 0);
f0706e82
JB		 603}
604
f698d856 605void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
ee385855 606 int encrypt)
f0706e82 607{
f0706e82
JB		 608 skb->dev = sdata->local->mdev;
609 skb_set_mac_header(skb, 0);
610 skb_set_network_header(skb, 0);
611 skb_set_transport_header(skb, 0);
612
d0f09804
JB		 613 skb->iif = sdata->dev->ifindex;
614 skb->do_not_encrypt = !encrypt;
f0706e82
JB		 615
616 dev_queue_xmit(skb);
617}
618
619
f698d856 620static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 621 struct ieee80211_if_sta *ifsta,
622 int transaction, u8 *extra, size_t extra_len,
623 int encrypt)
624{
f698d856 625 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 626 struct sk_buff *skb;
627 struct ieee80211_mgmt *mgmt;
628
629 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
630 sizeof(*mgmt) + 6 + extra_len);
631 if (!skb) {
632 printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
f698d856 633 "frame\n", sdata->dev->name);
f0706e82
JB		 634 return;
635 }
636 skb_reserve(skb, local->hw.extra_tx_headroom);
637
638 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
639 memset(mgmt, 0, 24 + 6);
e7827a70
HH		 640 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
641 IEEE80211_STYPE_AUTH);
f0706e82
JB		 642 if (encrypt)
643 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
644 memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
f698d856 645 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
f0706e82
JB		 646 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
647 mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
648 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
649 ifsta->auth_transaction = transaction + 1;
650 mgmt->u.auth.status_code = cpu_to_le16(0);
651 if (extra)
652 memcpy(skb_put(skb, extra_len), extra, extra_len);
653
f698d856 654 ieee80211_sta_tx(sdata, skb, encrypt);
f0706e82
JB		 655}
656
657
f698d856 658static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 659 struct ieee80211_if_sta *ifsta)
660{
0795af57
JP		 661 DECLARE_MAC_BUF(mac);
662
f0706e82
JB		 663 ifsta->auth_tries++;
664 if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
0795af57 665 printk(KERN_DEBUG "%s: authentication with AP %s"
f0706e82 666 " timed out\n",
f698d856 667 sdata->dev->name, print_mac(mac, ifsta->bssid));
48c2fc59 668 ifsta->state = IEEE80211_STA_MLME_DISABLED;
f0706e82
JB		 669 return;
670 }
671
48c2fc59 672 ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
0795af57 673 printk(KERN_DEBUG "%s: authenticate with AP %s\n",
f698d856 674 sdata->dev->name, print_mac(mac, ifsta->bssid));
f0706e82 675
f698d856 676 ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0);
f0706e82
JB		 677
678 mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
679}
680
36d16ae7
HS		 681static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
682 struct ieee80211_supported_band *sband,
683 u64 *rates)
684{
685 int i, j, count;
686 *rates = 0;
687 count = 0;
688 for (i = 0; i < bss->supp_rates_len; i++) {
689 int rate = (bss->supp_rates[i] & 0x7F) * 5;
690
691 for (j = 0; j < sband->n_bitrates; j++)
692 if (sband->bitrates[j].bitrate == rate) {
693 *rates |= BIT(j);
694 count++;
695 break;
696 }
697 }
698
699 return count;
700}
f0706e82 701
f698d856 702static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 703 struct ieee80211_if_sta *ifsta)
704{
f698d856 705 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 706 struct sk_buff *skb;
707 struct ieee80211_mgmt *mgmt;
708 u8 *pos, *ies;
36d16ae7 709 int i, len, count, rates_len, supp_rates_len;
f0706e82
JB		 710 u16 capab;
711 struct ieee80211_sta_bss *bss;
712 int wmm = 0;
8318d78a 713 struct ieee80211_supported_band *sband;
36d16ae7 714 u64 rates = 0;
f0706e82
JB		 715
716 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
717 sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
718 ifsta->ssid_len);
719 if (!skb) {
720 printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
f698d856 721 "frame\n", sdata->dev->name);
f0706e82
JB		 722 return;
723 }
724 skb_reserve(skb, local->hw.extra_tx_headroom);
725
8318d78a
JB		 726 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
727
f0706e82 728 capab = ifsta->capab;
8318d78a
JB		 729
730 if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
731 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
732 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
733 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
734 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
f0706e82 735 }
8318d78a 736
f698d856 737 bss = ieee80211_rx_bss_get(local, ifsta->bssid,
8318d78a 738 local->hw.conf.channel->center_freq,
cffdd30d 739 ifsta->ssid, ifsta->ssid_len);
f0706e82
JB		 740 if (bss) {
741 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
742 capab |= WLAN_CAPABILITY_PRIVACY;
988c0f72 743 if (bss->wmm_ie)
f0706e82 744 wmm = 1;
0d580a77
HS		 745
746 /* get all rates supported by the device and the AP as
747 * some APs don't like getting a superset of their rates
748 * in the association request (e.g. D-Link DAP 1353 in
749 * b-only mode) */
750 rates_len = ieee80211_compatible_rates(bss, sband, &rates);
751
06ff47bc
TW		 752 if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
753 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
754 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
755
3e122be0 756 ieee80211_rx_bss_put(local, bss);
0d580a77
HS		 757 } else {
758 rates = ~0;
759 rates_len = sband->n_bitrates;
f0706e82
JB		 760 }
761
762 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
763 memset(mgmt, 0, 24);
764 memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
f698d856 765 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
f0706e82
JB		 766 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
767
d6f2da5b 768 if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
f0706e82 769 skb_put(skb, 10);
e7827a70
HH		 770 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
771 IEEE80211_STYPE_REASSOC_REQ);
f0706e82 772 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
ea95bba4
TW		 773 mgmt->u.reassoc_req.listen_interval =
774 cpu_to_le16(local->hw.conf.listen_interval);
f0706e82
JB		 775 memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
776 ETH_ALEN);
777 } else {
778 skb_put(skb, 4);
e7827a70
HH		 779 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
780 IEEE80211_STYPE_ASSOC_REQ);
f0706e82 781 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
ea95bba4
TW		 782 mgmt->u.reassoc_req.listen_interval =
783 cpu_to_le16(local->hw.conf.listen_interval);
f0706e82
JB		 784 }
785
786 /* SSID */
787 ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
788 *pos++ = WLAN_EID_SSID;
789 *pos++ = ifsta->ssid_len;
790 memcpy(pos, ifsta->ssid, ifsta->ssid_len);
791
0d580a77 792 /* add all rates which were marked to be used above */
36d16ae7
HS		 793 supp_rates_len = rates_len;
794 if (supp_rates_len > 8)
795 supp_rates_len = 8;
796
8318d78a 797 len = sband->n_bitrates;
36d16ae7 798 pos = skb_put(skb, supp_rates_len + 2);
f0706e82 799 *pos++ = WLAN_EID_SUPP_RATES;
36d16ae7 800 *pos++ = supp_rates_len;
f0706e82 801
36d16ae7
HS		 802 count = 0;
803 for (i = 0; i < sband->n_bitrates; i++) {
804 if (BIT(i) & rates) {
8318d78a 805 int rate = sband->bitrates[i].bitrate;
f0706e82 806 *pos++ = (u8) (rate / 5);
36d16ae7
HS		 807 if (++count == 8)
808 break;
809 }
810 }
811
812 if (count == 8) {
813 pos = skb_put(skb, rates_len - count + 2);
814 *pos++ = WLAN_EID_EXT_SUPP_RATES;
815 *pos++ = rates_len - count;
816
817 for (i++; i < sband->n_bitrates; i++) {
818 if (BIT(i) & rates) {
819 int rate = sband->bitrates[i].bitrate;
820 *pos++ = (u8) (rate / 5);
821 }
f0706e82
JB		 822 }
823 }
824
06ff47bc
TW		 825 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
826 /* 1. power capabilities */
827 pos = skb_put(skb, 4);
828 *pos++ = WLAN_EID_PWR_CAPABILITY;
829 *pos++ = 2;
830 *pos++ = 0; /* min tx power */
831 *pos++ = local->hw.conf.channel->max_power; /* max tx power */
832
833 /* 2. supported channels */
834 /* TODO: get this in reg domain format */
835 pos = skb_put(skb, 2 * sband->n_channels + 2);
836 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
837 *pos++ = 2 * sband->n_channels;
838 for (i = 0; i < sband->n_channels; i++) {
839 *pos++ = ieee80211_frequency_to_channel(
840 sband->channels[i].center_freq);
841 *pos++ = 1; /* one channel in the subband*/
842 }
843 }
844
f0706e82
JB		 845 if (ifsta->extra_ie) {
846 pos = skb_put(skb, ifsta->extra_ie_len);
847 memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
848 }
849
d6f2da5b 850 if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
f0706e82
JB		 851 pos = skb_put(skb, 9);
852 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
853 *pos++ = 7; /* len */
854 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
855 *pos++ = 0x50;
856 *pos++ = 0xf2;
857 *pos++ = 2; /* WME */
858 *pos++ = 0; /* WME info */
859 *pos++ = 1; /* WME ver */
860 *pos++ = 0;
861 }
3434fbd3 862
c7153508 863 /* wmm support is a must to HT */
3434fbd3 864 if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
9306102e
EG		 865 sband->ht_info.ht_supported && bss->ht_add_ie) {
866 struct ieee80211_ht_addt_info *ht_add_info =
867 (struct ieee80211_ht_addt_info *)bss->ht_add_ie;
868 u16 cap = sband->ht_info.cap;
869 __le16 tmp;
870 u32 flags = local->hw.conf.channel->flags;
871
872 switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) {
873 case IEEE80211_HT_IE_CHA_SEC_ABOVE:
874 if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
875 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
876 cap &= ~IEEE80211_HT_CAP_SGI_40;
877 }
878 break;
879 case IEEE80211_HT_IE_CHA_SEC_BELOW:
880 if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
881 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
882 cap &= ~IEEE80211_HT_CAP_SGI_40;
883 }
884 break;
885 }
886
887 tmp = cpu_to_le16(cap);
c7153508
RR		 888 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
889 *pos++ = WLAN_EID_HT_CAPABILITY;
890 *pos++ = sizeof(struct ieee80211_ht_cap);
891 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
892 memcpy(pos, &tmp, sizeof(u16));
893 pos += sizeof(u16);
8318d78a
JB		 894 /* TODO: needs a define here for << 2 */
895 *pos++ = sband->ht_info.ampdu_factor |
896 (sband->ht_info.ampdu_density << 2);
897 memcpy(pos, sband->ht_info.supp_mcs_set, 16);
c7153508 898 }
f0706e82
JB		 899
900 kfree(ifsta->assocreq_ies);
901 ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
0ec0b7ac 902 ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
f0706e82
JB		 903 if (ifsta->assocreq_ies)
904 memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
905
f698d856 906 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 907}
908
909
f698d856 910static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 911 struct ieee80211_if_sta *ifsta, u16 reason)
912{
f698d856 913 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 914 struct sk_buff *skb;
915 struct ieee80211_mgmt *mgmt;
916
917 skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
918 if (!skb) {
919 printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
f698d856 920 "frame\n", sdata->dev->name);
f0706e82
JB		 921 return;
922 }
923 skb_reserve(skb, local->hw.extra_tx_headroom);
924
925 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
926 memset(mgmt, 0, 24);
927 memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
f698d856 928 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
f0706e82 929 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
e7827a70
HH		 930 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
931 IEEE80211_STYPE_DEAUTH);
f0706e82
JB		 932 skb_put(skb, 2);
933 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
934
f698d856 935 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 936}
937
938
f698d856 939static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 940 struct ieee80211_if_sta *ifsta, u16 reason)
941{
f698d856 942 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 943 struct sk_buff *skb;
944 struct ieee80211_mgmt *mgmt;
945
946 skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
947 if (!skb) {
948 printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
f698d856 949 "frame\n", sdata->dev->name);
f0706e82
JB		 950 return;
951 }
952 skb_reserve(skb, local->hw.extra_tx_headroom);
953
954 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
955 memset(mgmt, 0, 24);
956 memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
f698d856 957 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
f0706e82 958 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
e7827a70
HH		 959 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
960 IEEE80211_STYPE_DISASSOC);
f0706e82
JB		 961 skb_put(skb, 2);
962 mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
963
f698d856 964 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 965}
966
967
f698d856 968static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 969 struct ieee80211_if_sta *ifsta)
970{
f698d856 971 struct ieee80211_local *local = sdata->local;
f0706e82 972 struct ieee80211_sta_bss *bss;
5b98b1f7
JB		 973 int bss_privacy;
974 int wep_privacy;
975 int privacy_invoked;
f0706e82 976
5b98b1f7 977 if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
f0706e82
JB		 978 return 0;
979
f698d856 980 bss = ieee80211_rx_bss_get(local, ifsta->bssid,
8318d78a 981 local->hw.conf.channel->center_freq,
cffdd30d 982 ifsta->ssid, ifsta->ssid_len);
f0706e82
JB		 983 if (!bss)
984 return 0;
985
5b98b1f7 986 bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
f698d856 987 wep_privacy = !!ieee80211_sta_wep_configured(sdata);
5b98b1f7 988 privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
f0706e82 989
3e122be0 990 ieee80211_rx_bss_put(local, bss);
f0706e82 991
5b98b1f7
JB		 992 if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
993 return 0;
994
995 return 1;
f0706e82
JB		 996}
997
998
f698d856 999static void ieee80211_associate(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1000 struct ieee80211_if_sta *ifsta)
1001{
0795af57
JP		 1002 DECLARE_MAC_BUF(mac);
1003
f0706e82
JB		 1004 ifsta->assoc_tries++;
1005 if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
0795af57 1006 printk(KERN_DEBUG "%s: association with AP %s"
f0706e82 1007 " timed out\n",
f698d856 1008 sdata->dev->name, print_mac(mac, ifsta->bssid));
48c2fc59 1009 ifsta->state = IEEE80211_STA_MLME_DISABLED;
f0706e82
JB		 1010 return;
1011 }
1012
48c2fc59 1013 ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
0795af57 1014 printk(KERN_DEBUG "%s: associate with AP %s\n",
f698d856
JBG		 1015 sdata->dev->name, print_mac(mac, ifsta->bssid));
1016 if (ieee80211_privacy_mismatch(sdata, ifsta)) {
f0706e82 1017 printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
f698d856 1018 "mixed-cell disabled - abort association\n", sdata->dev->name);
48c2fc59 1019 ifsta->state = IEEE80211_STA_MLME_DISABLED;
f0706e82
JB		 1020 return;
1021 }
1022
f698d856 1023 ieee80211_send_assoc(sdata, ifsta);
f0706e82
JB		 1024
1025 mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
1026}
1027
1028
f698d856 1029static void ieee80211_associated(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1030 struct ieee80211_if_sta *ifsta)
1031{
f698d856 1032 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 1033 struct sta_info *sta;
1034 int disassoc;
0795af57 1035 DECLARE_MAC_BUF(mac);
f0706e82
JB		 1036
1037 /* TODO: start monitoring current AP signal quality and number of
1038 * missed beacons. Scan other channels every now and then and search
1039 * for better APs. */
1040 /* TODO: remove expired BSSes */
1041
48c2fc59 1042 ifsta->state = IEEE80211_STA_MLME_ASSOCIATED;
f0706e82 1043
d0709a65
JB		 1044 rcu_read_lock();
1045
f0706e82
JB		 1046 sta = sta_info_get(local, ifsta->bssid);
1047 if (!sta) {
0795af57 1048 printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
f698d856 1049 sdata->dev->name, print_mac(mac, ifsta->bssid));
f0706e82
JB		 1050 disassoc = 1;
1051 } else {
1052 disassoc = 0;
1053 if (time_after(jiffies,
1054 sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
d6f2da5b 1055 if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
f0706e82 1056 printk(KERN_DEBUG "%s: No ProbeResp from "
0795af57 1057 "current AP %s - assume out of "
f0706e82 1058 "range\n",
f698d856 1059 sdata->dev->name, print_mac(mac, ifsta->bssid));
f0706e82 1060 disassoc = 1;
d0709a65 1061 sta_info_unlink(&sta);
d6f2da5b 1062 } else
f698d856 1063 ieee80211_send_probe_req(sdata, ifsta->bssid,
f0706e82
JB		 1064 local->scan_ssid,
1065 local->scan_ssid_len);
d6f2da5b 1066 ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
f0706e82 1067 } else {
d6f2da5b 1068 ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
f0706e82
JB		 1069 if (time_after(jiffies, ifsta->last_probe +
1070 IEEE80211_PROBE_INTERVAL)) {
1071 ifsta->last_probe = jiffies;
f698d856 1072 ieee80211_send_probe_req(sdata, ifsta->bssid,
f0706e82
JB		 1073 ifsta->ssid,
1074 ifsta->ssid_len);
1075 }
1076 }
f0706e82 1077 }
d0709a65
JB		 1078
1079 rcu_read_unlock();
1080
3b96766f 1081 if (disassoc && sta)
d0709a65 1082 sta_info_destroy(sta);
d0709a65 1083
f0706e82 1084 if (disassoc) {
48c2fc59 1085 ifsta->state = IEEE80211_STA_MLME_DISABLED;
f698d856 1086 ieee80211_set_associated(sdata, ifsta, 0);
f0706e82
JB		 1087 } else {
1088 mod_timer(&ifsta->timer, jiffies +
1089 IEEE80211_MONITORING_INTERVAL);
1090 }
1091}
1092
1093
f698d856 1094static void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
f0706e82
JB		 1095 u8 *ssid, size_t ssid_len)
1096{
f698d856 1097 struct ieee80211_local *local = sdata->local;
8318d78a 1098 struct ieee80211_supported_band *sband;
f0706e82
JB		 1099 struct sk_buff *skb;
1100 struct ieee80211_mgmt *mgmt;
1101 u8 *pos, *supp_rates, *esupp_rates = NULL;
1102 int i;
1103
1104 skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
1105 if (!skb) {
1106 printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
f698d856 1107 "request\n", sdata->dev->name);
f0706e82
JB		 1108 return;
1109 }
1110 skb_reserve(skb, local->hw.extra_tx_headroom);
1111
1112 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1113 memset(mgmt, 0, 24);
e7827a70
HH		 1114 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1115 IEEE80211_STYPE_PROBE_REQ);
f698d856 1116 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
f0706e82
JB		 1117 if (dst) {
1118 memcpy(mgmt->da, dst, ETH_ALEN);
1119 memcpy(mgmt->bssid, dst, ETH_ALEN);
1120 } else {
1121 memset(mgmt->da, 0xff, ETH_ALEN);
1122 memset(mgmt->bssid, 0xff, ETH_ALEN);
1123 }
1124 pos = skb_put(skb, 2 + ssid_len);
1125 *pos++ = WLAN_EID_SSID;
1126 *pos++ = ssid_len;
1127 memcpy(pos, ssid, ssid_len);
1128
1129 supp_rates = skb_put(skb, 2);
1130 supp_rates[0] = WLAN_EID_SUPP_RATES;
1131 supp_rates[1] = 0;
8318d78a
JB		 1132 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
1133
1134 for (i = 0; i < sband->n_bitrates; i++) {
1135 struct ieee80211_rate *rate = &sband->bitrates[i];
f0706e82
JB		 1136 if (esupp_rates) {
1137 pos = skb_put(skb, 1);
1138 esupp_rates[1]++;
1139 } else if (supp_rates[1] == 8) {
1140 esupp_rates = skb_put(skb, 3);
1141 esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
1142 esupp_rates[1] = 1;
1143 pos = &esupp_rates[2];
1144 } else {
1145 pos = skb_put(skb, 1);
1146 supp_rates[1]++;
1147 }
8318d78a 1148 *pos = rate->bitrate / 5;
f0706e82
JB		 1149 }
1150
f698d856 1151 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 1152}
1153
1154
f698d856 1155static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
f0706e82 1156{
f0706e82 1157 if (!sdata || !sdata->default_key ||
8f20fc24 1158 sdata->default_key->conf.alg != ALG_WEP)
f0706e82
JB		 1159 return 0;
1160 return 1;
1161}
1162
1163
f698d856 1164static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1165 struct ieee80211_if_sta *ifsta)
1166{
f698d856 1167 printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name);
d6f2da5b 1168 ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
f698d856 1169 ieee80211_associate(sdata, ifsta);
f0706e82
JB		 1170}
1171
1172
f698d856 1173static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1174 struct ieee80211_if_sta *ifsta,
1175 struct ieee80211_mgmt *mgmt,
1176 size_t len)
1177{
1178 u8 *pos;
1179 struct ieee802_11_elems elems;
1180
f0706e82 1181 pos = mgmt->u.auth.variable;
67a4cce4 1182 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
f4ea83dd 1183 if (!elems.challenge)
f0706e82 1184 return;
f698d856 1185 ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2,
f0706e82
JB		 1186 elems.challenge_len + 2, 1);
1187}
1188
f698d856 1189static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
9f985b0e
RR		 1190 u8 dialog_token, u16 status, u16 policy,
1191 u16 buf_size, u16 timeout)
1192{
9f985b0e 1193 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
f698d856 1194 struct ieee80211_local *local = sdata->local;
9f985b0e
RR		 1195 struct sk_buff *skb;
1196 struct ieee80211_mgmt *mgmt;
1197 u16 capab;
1198
3acea5b6
EK		 1199 skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
1200
9f985b0e
RR		 1201 if (!skb) {
1202 printk(KERN_DEBUG "%s: failed to allocate buffer "
f698d856 1203 "for addba resp frame\n", sdata->dev->name);
9f985b0e
RR		 1204 return;
1205 }
1206
1207 skb_reserve(skb, local->hw.extra_tx_headroom);
1208 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1209 memset(mgmt, 0, 24);
1210 memcpy(mgmt->da, da, ETH_ALEN);
f698d856 1211 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
51fb61e7 1212 if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
f698d856 1213 memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
9f985b0e
RR		 1214 else
1215 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
e7827a70
HH		 1216 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1217 IEEE80211_STYPE_ACTION);
9f985b0e
RR		 1218
1219 skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
1220 mgmt->u.action.category = WLAN_CATEGORY_BACK;
1221 mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
1222 mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
1223
1224 capab = (u16)(policy << 1); /* bit 1 aggregation policy */
1225 capab |= (u16)(tid << 2); /* bit 5:2 TID number */
1226 capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
1227
1228 mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
1229 mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
1230 mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
1231
f698d856 1232 ieee80211_sta_tx(sdata, skb, 0);
9f985b0e
RR		 1233
1234 return;
1235}
1236
f698d856 1237void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
eadc8d9e
RR		 1238 u16 tid, u8 dialog_token, u16 start_seq_num,
1239 u16 agg_size, u16 timeout)
1240{
f698d856 1241 struct ieee80211_local *local = sdata->local;
eadc8d9e
RR		 1242 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
1243 struct sk_buff *skb;
1244 struct ieee80211_mgmt *mgmt;
1245 u16 capab;
1246
3acea5b6 1247 skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
eadc8d9e
RR		 1248
1249 if (!skb) {
1250 printk(KERN_ERR "%s: failed to allocate buffer "
f698d856 1251 "for addba request frame\n", sdata->dev->name);
eadc8d9e
RR		 1252 return;
1253 }
1254 skb_reserve(skb, local->hw.extra_tx_headroom);
1255 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1256 memset(mgmt, 0, 24);
1257 memcpy(mgmt->da, da, ETH_ALEN);
f698d856 1258 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
eadc8d9e 1259 if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
f698d856 1260 memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
eadc8d9e
RR		 1261 else
1262 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
1263
e7827a70
HH		 1264 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1265 IEEE80211_STYPE_ACTION);
eadc8d9e
RR		 1266
1267 skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
1268
1269 mgmt->u.action.category = WLAN_CATEGORY_BACK;
1270 mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
1271
1272 mgmt->u.action.u.addba_req.dialog_token = dialog_token;
1273 capab = (u16)(1 << 1); /* bit 1 aggregation policy */
1274 capab |= (u16)(tid << 2); /* bit 5:2 TID number */
1275 capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */
1276
1277 mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
1278
1279 mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
1280 mgmt->u.action.u.addba_req.start_seq_num =
1281 cpu_to_le16(start_seq_num << 4);
1282
f698d856 1283 ieee80211_sta_tx(sdata, skb, 0);
eadc8d9e
RR		 1284}
1285
f698d856 1286static void ieee80211_sta_process_addba_request(struct ieee80211_local *local,
9f985b0e
RR		 1287 struct ieee80211_mgmt *mgmt,
1288 size_t len)
1289{
07db2183
RR		 1290 struct ieee80211_hw *hw = &local->hw;
1291 struct ieee80211_conf *conf = &hw->conf;
9f985b0e 1292 struct sta_info *sta;
07db2183
RR		 1293 struct tid_ampdu_rx *tid_agg_rx;
1294 u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
9f985b0e 1295 u8 dialog_token;
07db2183
RR		 1296 int ret = -EOPNOTSUPP;
1297 DECLARE_MAC_BUF(mac);
9f985b0e 1298
d0709a65
JB		 1299 rcu_read_lock();
1300
9f985b0e 1301 sta = sta_info_get(local, mgmt->sa);
d0709a65
JB		 1302 if (!sta) {
1303 rcu_read_unlock();
9f985b0e 1304 return;
d0709a65 1305 }
9f985b0e
RR		 1306
1307 /* extract session parameters from addba request frame */
1308 dialog_token = mgmt->u.action.u.addba_req.dialog_token;
1309 timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
07db2183
RR		 1310 start_seq_num =
1311 le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
9f985b0e
RR		 1312
1313 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1314 ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
1315 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1316 buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
1317
9f985b0e
RR		 1318 status = WLAN_STATUS_REQUEST_DECLINED;
1319
07db2183
RR		 1320 /* sanity check for incoming parameters:
1321 * check if configuration can support the BA policy
1322 * and if buffer size does not exceeds max value */
1323 if (((ba_policy != 1)
1324 && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
1325 || (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
1326 status = WLAN_STATUS_INVALID_QOS_PARAM;
1327#ifdef CONFIG_MAC80211_HT_DEBUG
1328 if (net_ratelimit())
7b9d44cd 1329 printk(KERN_DEBUG "AddBA Req with bad params from "
07db2183
RR		 1330 "%s on tid %u. policy %d, buffer size %d\n",
1331 print_mac(mac, mgmt->sa), tid, ba_policy,
1332 buf_size);
1333#endif /* CONFIG_MAC80211_HT_DEBUG */
1334 goto end_no_lock;
1335 }
1336 /* determine default buffer size */
1337 if (buf_size == 0) {
8318d78a
JB		 1338 struct ieee80211_supported_band *sband;
1339
1340 sband = local->hw.wiphy->bands[conf->channel->band];
07db2183 1341 buf_size = IEEE80211_MIN_AMPDU_BUF;
8318d78a 1342 buf_size = buf_size << sband->ht_info.ampdu_factor;
07db2183
RR		 1343 }
1344
07db2183
RR		 1345
1346 /* examine state machine */
07346f81 1347 spin_lock_bh(&sta->lock);
07db2183 1348
cee24a3e 1349 if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
07db2183
RR		 1350#ifdef CONFIG_MAC80211_HT_DEBUG
1351 if (net_ratelimit())
7b9d44cd 1352 printk(KERN_DEBUG "unexpected AddBA Req from "
07db2183
RR		 1353 "%s on tid %u\n",
1354 print_mac(mac, mgmt->sa), tid);
1355#endif /* CONFIG_MAC80211_HT_DEBUG */
1356 goto end;
1357 }
1358
cee24a3e
RR		 1359 /* prepare A-MPDU MLME for Rx aggregation */
1360 sta->ampdu_mlme.tid_rx[tid] =
1361 kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
1362 if (!sta->ampdu_mlme.tid_rx[tid]) {
f4ea83dd 1363#ifdef CONFIG_MAC80211_HT_DEBUG
cee24a3e
RR		 1364 if (net_ratelimit())
1365 printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
1366 tid);
f4ea83dd 1367#endif
cee24a3e
RR		 1368 goto end;
1369 }
1370 /* rx timer */
1371 sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
1372 sta_rx_agg_session_timer_expired;
1373 sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
1374 (unsigned long)&sta->timer_to_tid[tid];
1375 init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
1376
1377 tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
1378
07db2183
RR		 1379 /* prepare reordering buffer */
1380 tid_agg_rx->reorder_buf =
c97c23e3 1381 kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC);
03147dfc 1382 if (!tid_agg_rx->reorder_buf) {
f4ea83dd 1383#ifdef CONFIG_MAC80211_HT_DEBUG
03147dfc
JB		 1384 if (net_ratelimit())
1385 printk(KERN_ERR "can not allocate reordering buffer "
1386 "to tid %d\n", tid);
f4ea83dd 1387#endif
cee24a3e 1388 kfree(sta->ampdu_mlme.tid_rx[tid]);
07db2183
RR		 1389 goto end;
1390 }
1391 memset(tid_agg_rx->reorder_buf, 0,
c97c23e3 1392 buf_size * sizeof(struct sk_buff *));
07db2183
RR		 1393
1394 if (local->ops->ampdu_action)
1395 ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
0df3ef45 1396 sta->addr, tid, &start_seq_num);
07db2183 1397#ifdef CONFIG_MAC80211_HT_DEBUG
513a1025 1398 printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
07db2183
RR		 1399#endif /* CONFIG_MAC80211_HT_DEBUG */
1400
1401 if (ret) {
1402 kfree(tid_agg_rx->reorder_buf);
cee24a3e
RR		 1403 kfree(tid_agg_rx);
1404 sta->ampdu_mlme.tid_rx[tid] = NULL;
07db2183
RR		 1405 goto end;
1406 }
1407
1408 /* change state and send addba resp */
cee24a3e 1409 sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
07db2183
RR		 1410 tid_agg_rx->dialog_token = dialog_token;
1411 tid_agg_rx->ssn = start_seq_num;
1412 tid_agg_rx->head_seq_num = start_seq_num;
1413 tid_agg_rx->buf_size = buf_size;
1414 tid_agg_rx->timeout = timeout;
1415 tid_agg_rx->stored_mpdu_num = 0;
1416 status = WLAN_STATUS_SUCCESS;
1417end:
07346f81 1418 spin_unlock_bh(&sta->lock);
07db2183
RR		 1419
1420end_no_lock:
f698d856 1421 ieee80211_send_addba_resp(sta->sdata, sta->addr, tid,
d0709a65
JB		 1422 dialog_token, status, 1, buf_size, timeout);
1423 rcu_read_unlock();
9f985b0e 1424}
f0706e82 1425
f698d856 1426static void ieee80211_sta_process_addba_resp(struct ieee80211_local *local,
eadc8d9e
RR		 1427 struct ieee80211_mgmt *mgmt,
1428 size_t len)
1429{
eadc8d9e
RR		 1430 struct ieee80211_hw *hw = &local->hw;
1431 struct sta_info *sta;
1432 u16 capab;
1433 u16 tid;
1434 u8 *state;
1435
d0709a65
JB		 1436 rcu_read_lock();
1437
eadc8d9e 1438 sta = sta_info_get(local, mgmt->sa);
d0709a65
JB		 1439 if (!sta) {
1440 rcu_read_unlock();
eadc8d9e 1441 return;
d0709a65 1442 }
eadc8d9e
RR		 1443
1444 capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
1445 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1446
cee24a3e 1447 state = &sta->ampdu_mlme.tid_state_tx[tid];
eadc8d9e 1448
07346f81 1449 spin_lock_bh(&sta->lock);
eadc8d9e 1450
cee24a3e 1451 if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
07346f81 1452 spin_unlock_bh(&sta->lock);
cee24a3e
RR		 1453 goto addba_resp_exit;
1454 }
1455
eadc8d9e 1456 if (mgmt->u.action.u.addba_resp.dialog_token !=
cee24a3e 1457 sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
07346f81 1458 spin_unlock_bh(&sta->lock);
eadc8d9e
RR		 1459#ifdef CONFIG_MAC80211_HT_DEBUG
1460 printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
1461#endif /* CONFIG_MAC80211_HT_DEBUG */
cee24a3e 1462 goto addba_resp_exit;
eadc8d9e
RR		 1463 }
1464
cee24a3e 1465 del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
eadc8d9e
RR		 1466#ifdef CONFIG_MAC80211_HT_DEBUG
1467 printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
1468#endif /* CONFIG_MAC80211_HT_DEBUG */
1469 if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
1470 == WLAN_STATUS_SUCCESS) {
eadc8d9e 1471 *state |= HT_ADDBA_RECEIVED_MSK;
cee24a3e 1472 sta->ampdu_mlme.addba_req_num[tid] = 0;
eadc8d9e 1473
f4ea83dd 1474 if (*state == HT_AGG_STATE_OPERATIONAL)
eadc8d9e 1475 ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
eadc8d9e 1476
07346f81 1477 spin_unlock_bh(&sta->lock);
eadc8d9e 1478 } else {
cee24a3e 1479 sta->ampdu_mlme.addba_req_num[tid]++;
eadc8d9e
RR		 1480 /* this will allow the state check in stop_BA_session */
1481 *state = HT_AGG_STATE_OPERATIONAL;
07346f81 1482 spin_unlock_bh(&sta->lock);
eadc8d9e
RR		 1483 ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
1484 WLAN_BACK_INITIATOR);
1485 }
cee24a3e
RR		 1486
1487addba_resp_exit:
d0709a65 1488 rcu_read_unlock();
eadc8d9e
RR		 1489}
1490
f698d856 1491void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
eadc8d9e 1492 u16 initiator, u16 reason_code)
07db2183 1493{
f698d856 1494 struct ieee80211_local *local = sdata->local;
07db2183
RR		 1495 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
1496 struct sk_buff *skb;
1497 struct ieee80211_mgmt *mgmt;
1498 u16 params;
1499
3acea5b6 1500 skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
07db2183
RR		 1501
1502 if (!skb) {
1503 printk(KERN_ERR "%s: failed to allocate buffer "
f698d856 1504 "for delba frame\n", sdata->dev->name);
07db2183
RR		 1505 return;
1506 }
1507
1508 skb_reserve(skb, local->hw.extra_tx_headroom);
1509 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
1510 memset(mgmt, 0, 24);
1511 memcpy(mgmt->da, da, ETH_ALEN);
f698d856 1512 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
51fb61e7 1513 if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
f698d856 1514 memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
07db2183
RR		 1515 else
1516 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
e7827a70
HH		 1517 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1518 IEEE80211_STYPE_ACTION);
07db2183
RR		 1519
1520 skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
1521
1522 mgmt->u.action.category = WLAN_CATEGORY_BACK;
1523 mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
1524 params = (u16)(initiator << 11); /* bit 11 initiator */
1525 params |= (u16)(tid << 12); /* bit 15:12 TID number */
1526
1527 mgmt->u.action.u.delba.params = cpu_to_le16(params);
1528 mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
1529
f698d856 1530 ieee80211_sta_tx(sdata, skb, 0);
07db2183
RR		 1531}
1532
f698d856 1533void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn)
429a3805 1534{
f698d856 1535 struct ieee80211_local *local = sdata->local;
429a3805
RR		 1536 struct sk_buff *skb;
1537 struct ieee80211_bar *bar;
1538 u16 bar_control = 0;
1539
1540 skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom);
1541 if (!skb) {
1542 printk(KERN_ERR "%s: failed to allocate buffer for "
f698d856 1543 "bar frame\n", sdata->dev->name);
429a3805
RR		 1544 return;
1545 }
1546 skb_reserve(skb, local->hw.extra_tx_headroom);
1547 bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar));
1548 memset(bar, 0, sizeof(*bar));
e7827a70
HH		 1549 bar->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1550 IEEE80211_STYPE_BACK_REQ);
429a3805 1551 memcpy(bar->ra, ra, ETH_ALEN);
f698d856 1552 memcpy(bar->ta, sdata->dev->dev_addr, ETH_ALEN);
429a3805
RR		 1553 bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
1554 bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
1555 bar_control |= (u16)(tid << 12);
1556 bar->control = cpu_to_le16(bar_control);
1557 bar->start_seq_num = cpu_to_le16(ssn);
1558
f698d856 1559 ieee80211_sta_tx(sdata, skb, 0);
429a3805
RR		 1560}
1561
f698d856 1562void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid,
07db2183
RR		 1563 u16 initiator, u16 reason)
1564{
f698d856 1565 struct ieee80211_local *local = sdata->local;
07db2183
RR		 1566 struct ieee80211_hw *hw = &local->hw;
1567 struct sta_info *sta;
b580781e 1568 int ret, i;
513a1025 1569 DECLARE_MAC_BUF(mac);
07db2183 1570
d0709a65
JB		 1571 rcu_read_lock();
1572
07db2183 1573 sta = sta_info_get(local, ra);
d0709a65
JB		 1574 if (!sta) {
1575 rcu_read_unlock();
07db2183 1576 return;
d0709a65 1577 }
07db2183
RR		 1578
1579 /* check if TID is in operational state */
07346f81 1580 spin_lock_bh(&sta->lock);
cee24a3e 1581 if (sta->ampdu_mlme.tid_state_rx[tid]
07db2183 1582 != HT_AGG_STATE_OPERATIONAL) {
07346f81 1583 spin_unlock_bh(&sta->lock);
d0709a65 1584 rcu_read_unlock();
07db2183
RR		 1585 return;
1586 }
cee24a3e 1587 sta->ampdu_mlme.tid_state_rx[tid] =
07db2183
RR		 1588 HT_AGG_STATE_REQ_STOP_BA_MSK |
1589 (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
07346f81 1590 spin_unlock_bh(&sta->lock);
07db2183
RR		 1591
1592 /* stop HW Rx aggregation. ampdu_action existence
1593 * already verified in session init so we add the BUG_ON */
1594 BUG_ON(!local->ops->ampdu_action);
1595
513a1025
RR		 1596#ifdef CONFIG_MAC80211_HT_DEBUG
1597 printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
1598 print_mac(mac, ra), tid);
1599#endif /* CONFIG_MAC80211_HT_DEBUG */
1600
07db2183 1601 ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
0df3ef45 1602 ra, tid, NULL);
07db2183
RR		 1603 if (ret)
1604 printk(KERN_DEBUG "HW problem - can not stop rx "
f4ea83dd 1605 "aggregation for tid %d\n", tid);
07db2183
RR		 1606
1607 /* shutdown timer has not expired */
1608 if (initiator != WLAN_BACK_TIMER)
cee24a3e 1609 del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
07db2183
RR		 1610
1611 /* check if this is a self generated aggregation halt */
1612 if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
f698d856 1613 ieee80211_send_delba(sdata, ra, tid, 0, reason);
07db2183
RR		 1614
1615 /* free the reordering buffer */
cee24a3e
RR		 1616 for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
1617 if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
b580781e 1618 /* release the reordered frames */
cee24a3e
RR		 1619 dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
1620 sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
1621 sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
b580781e
RR		 1622 }
1623 }
cee24a3e
RR		 1624 /* free resources */
1625 kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
1626 kfree(sta->ampdu_mlme.tid_rx[tid]);
1627 sta->ampdu_mlme.tid_rx[tid] = NULL;
1628 sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
07db2183 1629
d0709a65 1630 rcu_read_unlock();
07db2183
RR		 1631}
1632
eadc8d9e 1633
f698d856 1634static void ieee80211_sta_process_delba(struct ieee80211_sub_if_data *sdata,
688b88a4
RR		 1635 struct ieee80211_mgmt *mgmt, size_t len)
1636{
f698d856 1637 struct ieee80211_local *local = sdata->local;
688b88a4
RR		 1638 struct sta_info *sta;
1639 u16 tid, params;
1640 u16 initiator;
1641 DECLARE_MAC_BUF(mac);
1642
d0709a65
JB		 1643 rcu_read_lock();
1644
688b88a4 1645 sta = sta_info_get(local, mgmt->sa);
d0709a65
JB		 1646 if (!sta) {
1647 rcu_read_unlock();
688b88a4 1648 return;
d0709a65 1649 }
688b88a4
RR		 1650
1651 params = le16_to_cpu(mgmt->u.action.u.delba.params);
1652 tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
1653 initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
1654
1655#ifdef CONFIG_MAC80211_HT_DEBUG
1656 if (net_ratelimit())
d92684e6
RR		 1657 printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
1658 print_mac(mac, mgmt->sa),
2e354ed7 1659 initiator ? "initiator" : "recipient", tid,
688b88a4
RR		 1660 mgmt->u.action.u.delba.reason_code);
1661#endif /* CONFIG_MAC80211_HT_DEBUG */
1662
1663 if (initiator == WLAN_BACK_INITIATOR)
f698d856 1664 ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid,
688b88a4 1665 WLAN_BACK_INITIATOR, 0);
d92684e6 1666 else { /* WLAN_BACK_RECIPIENT */
07346f81 1667 spin_lock_bh(&sta->lock);
cee24a3e 1668 sta->ampdu_mlme.tid_state_tx[tid] =
d92684e6 1669 HT_AGG_STATE_OPERATIONAL;
07346f81 1670 spin_unlock_bh(&sta->lock);
d92684e6
RR		 1671 ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
1672 WLAN_BACK_RECIPIENT);
1673 }
d0709a65 1674 rcu_read_unlock();
688b88a4
RR		 1675}
1676
eadc8d9e
RR		 1677/*
1678 * After sending add Block Ack request we activated a timer until
1679 * add Block Ack response will arrive from the recipient.
1680 * If this timer expires sta_addba_resp_timer_expired will be executed.
1681 */
1682void sta_addba_resp_timer_expired(unsigned long data)
1683{
1684 /* not an elegant detour, but there is no choice as the timer passes
1685 * only one argument, and both sta_info and TID are needed, so init
73651ee6 1686 * flow in sta_info_create gives the TID as data, while the timer_to_id
eadc8d9e 1687 * array gives the sta through container_of */
70d251b2 1688 u16 tid = *(u8 *)data;
eadc8d9e
RR		 1689 struct sta_info *temp_sta = container_of((void *)data,
1690 struct sta_info, timer_to_tid[tid]);
1691
1692 struct ieee80211_local *local = temp_sta->local;
1693 struct ieee80211_hw *hw = &local->hw;
1694 struct sta_info *sta;
1695 u8 *state;
1696
d0709a65
JB		 1697 rcu_read_lock();
1698
eadc8d9e 1699 sta = sta_info_get(local, temp_sta->addr);
d0709a65
JB		 1700 if (!sta) {
1701 rcu_read_unlock();
eadc8d9e 1702 return;
d0709a65 1703 }
eadc8d9e 1704
cee24a3e 1705 state = &sta->ampdu_mlme.tid_state_tx[tid];
eadc8d9e 1706 /* check if the TID waits for addBA response */
07346f81 1707 spin_lock_bh(&sta->lock);
eadc8d9e 1708 if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
07346f81 1709 spin_unlock_bh(&sta->lock);
eadc8d9e 1710 *state = HT_AGG_STATE_IDLE;
f4ea83dd 1711#ifdef CONFIG_MAC80211_HT_DEBUG
eadc8d9e
RR		 1712 printk(KERN_DEBUG "timer expired on tid %d but we are not "
1713 "expecting addBA response there", tid);
f4ea83dd 1714#endif
eadc8d9e
RR		 1715 goto timer_expired_exit;
1716 }
1717
f4ea83dd 1718#ifdef CONFIG_MAC80211_HT_DEBUG
eadc8d9e 1719 printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
f4ea83dd 1720#endif
eadc8d9e
RR		 1721
1722 /* go through the state check in stop_BA_session */
1723 *state = HT_AGG_STATE_OPERATIONAL;
07346f81 1724 spin_unlock_bh(&sta->lock);
eadc8d9e
RR		 1725 ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
1726 WLAN_BACK_INITIATOR);
1727
1728timer_expired_exit:
d0709a65 1729 rcu_read_unlock();
eadc8d9e
RR		 1730}
1731
07db2183 1732/*
7b9d44cd
RR		 1733 * After accepting the AddBA Request we activated a timer,
1734 * resetting it after each frame that arrives from the originator.
07db2183
RR		 1735 * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
1736 */
712590de 1737static void sta_rx_agg_session_timer_expired(unsigned long data)
07db2183
RR		 1738{
1739 /* not an elegant detour, but there is no choice as the timer passes
70d251b2 1740 * only one argument, and various sta_info are needed here, so init
73651ee6 1741 * flow in sta_info_create gives the TID as data, while the timer_to_id
07db2183
RR		 1742 * array gives the sta through container_of */
1743 u8 *ptid = (u8 *)data;
1744 u8 *timer_to_id = ptid - *ptid;
1745 struct sta_info *sta = container_of(timer_to_id, struct sta_info,
1746 timer_to_tid[0]);
1747
f4ea83dd 1748#ifdef CONFIG_MAC80211_HT_DEBUG
07db2183 1749 printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
f4ea83dd 1750#endif
f698d856 1751 ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr,
d0709a65 1752 (u16)*ptid, WLAN_BACK_TIMER,
07db2183
RR		 1753 WLAN_REASON_QSTA_TIMEOUT);
1754}
1755
f698d856 1756void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr)
85249e5f 1757{
f698d856 1758 struct ieee80211_local *local = sdata->local;
85249e5f
RR		 1759 int i;
1760
1761 for (i = 0; i < STA_TID_NUM; i++) {
1762 ieee80211_stop_tx_ba_session(&local->hw, addr, i,
1763 WLAN_BACK_INITIATOR);
f698d856 1764 ieee80211_sta_stop_rx_ba_session(sdata, addr, i,
85249e5f
RR		 1765 WLAN_BACK_RECIPIENT,
1766 WLAN_REASON_QSTA_LEAVE_QBSS);
1767 }
1768}
07db2183 1769
f698d856 1770static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
b6623486
AK		 1771 struct ieee80211_msrment_ie *request_ie,
1772 const u8 *da, const u8 *bssid,
1773 u8 dialog_token)
1774{
f698d856 1775 struct ieee80211_local *local = sdata->local;
b6623486
AK		 1776 struct sk_buff *skb;
1777 struct ieee80211_mgmt *msr_report;
1778
1779 skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
1780 sizeof(struct ieee80211_msrment_ie));
1781
1782 if (!skb) {
1783 printk(KERN_ERR "%s: failed to allocate buffer for "
f698d856 1784 "measurement report frame\n", sdata->dev->name);
b6623486
AK		 1785 return;
1786 }
1787
1788 skb_reserve(skb, local->hw.extra_tx_headroom);
1789 msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
1790 memset(msr_report, 0, 24);
1791 memcpy(msr_report->da, da, ETH_ALEN);
f698d856 1792 memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
b6623486 1793 memcpy(msr_report->bssid, bssid, ETH_ALEN);
e7827a70 1794 msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
b6623486
AK		 1795 IEEE80211_STYPE_ACTION);
1796
1797 skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
1798 msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
1799 msr_report->u.action.u.measurement.action_code =
1800 WLAN_ACTION_SPCT_MSR_RPRT;
1801 msr_report->u.action.u.measurement.dialog_token = dialog_token;
1802
1803 msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
1804 msr_report->u.action.u.measurement.length =
1805 sizeof(struct ieee80211_msrment_ie);
1806
1807 memset(&msr_report->u.action.u.measurement.msr_elem, 0,
1808 sizeof(struct ieee80211_msrment_ie));
1809 msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
1810 msr_report->u.action.u.measurement.msr_elem.mode |=
1811 IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
1812 msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
1813
f698d856 1814 ieee80211_sta_tx(sdata, skb, 0);
b6623486
AK		 1815}
1816
f698d856 1817static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata,
b6623486
AK		 1818 struct ieee80211_mgmt *mgmt,
1819 size_t len)
1820{
1821 /*
1822 * Ignoring measurement request is spec violation.
1823 * Mandatory measurements must be reported optional
1824 * measurements might be refused or reported incapable
1825 * For now just refuse
1826 * TODO: Answer basic measurement as unmeasured
1827 */
f698d856 1828 ieee80211_send_refuse_measurement_request(sdata,
b6623486
AK		 1829 &mgmt->u.action.u.measurement.msr_elem,
1830 mgmt->sa, mgmt->bssid,
1831 mgmt->u.action.u.measurement.dialog_token);
1832}
1833
1834
f698d856 1835static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1836 struct ieee80211_if_sta *ifsta,
1837 struct ieee80211_mgmt *mgmt,
1838 size_t len)
1839{
f0706e82 1840 u16 auth_alg, auth_transaction, status_code;
0795af57 1841 DECLARE_MAC_BUF(mac);
f0706e82 1842
48c2fc59 1843 if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
f4ea83dd 1844 sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
f0706e82 1845 return;
f0706e82 1846
f4ea83dd 1847 if (len < 24 + 6)
f0706e82 1848 return;
f0706e82 1849
51fb61e7 1850 if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
f4ea83dd 1851 memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
f0706e82 1852 return;
f0706e82 1853
51fb61e7 1854 if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
f4ea83dd 1855 memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
f0706e82 1856 return;
f0706e82
JB		 1857
1858 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
1859 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
1860 status_code = le16_to_cpu(mgmt->u.auth.status_code);
1861
51fb61e7 1862 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
135a2110
JB		 1863 /*
1864 * IEEE 802.11 standard does not require authentication in IBSS
f0706e82
JB		 1865 * networks and most implementations do not seem to use it.
1866 * However, try to reply to authentication attempts if someone
1867 * has actually implemented this.
135a2110 1868 */
f4ea83dd 1869 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
f0706e82 1870 return;
f698d856 1871 ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0);
f0706e82
JB		 1872 }
1873
1874 if (auth_alg != ifsta->auth_alg ||
f4ea83dd 1875 auth_transaction != ifsta->auth_transaction)
f0706e82 1876 return;
f0706e82
JB		 1877
1878 if (status_code != WLAN_STATUS_SUCCESS) {
f0706e82
JB		 1879 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
1880 u8 algs[3];
1881 const int num_algs = ARRAY_SIZE(algs);
1882 int i, pos;
1883 algs[0] = algs[1] = algs[2] = 0xff;
1884 if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
1885 algs[0] = WLAN_AUTH_OPEN;
1886 if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
1887 algs[1] = WLAN_AUTH_SHARED_KEY;
1888 if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
1889 algs[2] = WLAN_AUTH_LEAP;
1890 if (ifsta->auth_alg == WLAN_AUTH_OPEN)
1891 pos = 0;
1892 else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
1893 pos = 1;
1894 else
1895 pos = 2;
1896 for (i = 0; i < num_algs; i++) {
1897 pos++;
1898 if (pos >= num_algs)
1899 pos = 0;
1900 if (algs[pos] == ifsta->auth_alg ||
1901 algs[pos] == 0xff)
1902 continue;
1903 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
f698d856 1904 !ieee80211_sta_wep_configured(sdata))
f0706e82
JB		 1905 continue;
1906 ifsta->auth_alg = algs[pos];
f0706e82
JB		 1907 break;
1908 }
1909 }
1910 return;
1911 }
1912
1913 switch (ifsta->auth_alg) {
1914 case WLAN_AUTH_OPEN:
1915 case WLAN_AUTH_LEAP:
f698d856 1916 ieee80211_auth_completed(sdata, ifsta);
f0706e82
JB		 1917 break;
1918 case WLAN_AUTH_SHARED_KEY:
1919 if (ifsta->auth_transaction == 4)
f698d856 1920 ieee80211_auth_completed(sdata, ifsta);
f0706e82 1921 else
f698d856 1922 ieee80211_auth_challenge(sdata, ifsta, mgmt, len);
f0706e82
JB		 1923 break;
1924 }
1925}
1926
1927
f698d856 1928static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1929 struct ieee80211_if_sta *ifsta,
1930 struct ieee80211_mgmt *mgmt,
1931 size_t len)
1932{
1933 u16 reason_code;
0795af57 1934 DECLARE_MAC_BUF(mac);
f0706e82 1935
f4ea83dd 1936 if (len < 24 + 2)
f0706e82 1937 return;
f0706e82 1938
f4ea83dd 1939 if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
f0706e82 1940 return;
f0706e82
JB		 1941
1942 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
1943
988c0f72 1944 if (ifsta->flags & IEEE80211_STA_AUTHENTICATED)
f698d856 1945 printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name);
f0706e82 1946
48c2fc59
TW		 1947 if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE ||
1948 ifsta->state == IEEE80211_STA_MLME_ASSOCIATE ||
1949 ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
1950 ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
f0706e82
JB		 1951 mod_timer(&ifsta->timer, jiffies +
1952 IEEE80211_RETRY_AUTH_INTERVAL);
1953 }
1954
f698d856 1955 ieee80211_set_disassoc(sdata, ifsta, 1);
d6f2da5b 1956 ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
f0706e82
JB		 1957}
1958
1959
f698d856 1960static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1961 struct ieee80211_if_sta *ifsta,
1962 struct ieee80211_mgmt *mgmt,
1963 size_t len)
1964{
1965 u16 reason_code;
0795af57 1966 DECLARE_MAC_BUF(mac);
f0706e82 1967
f4ea83dd 1968 if (len < 24 + 2)
f0706e82 1969 return;
f0706e82 1970
f4ea83dd 1971 if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
f0706e82 1972 return;
f0706e82
JB		 1973
1974 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
1975
d6f2da5b 1976 if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
f698d856 1977 printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name);
f0706e82 1978
48c2fc59
TW		 1979 if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
1980 ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
f0706e82
JB		 1981 mod_timer(&ifsta->timer, jiffies +
1982 IEEE80211_RETRY_AUTH_INTERVAL);
1983 }
1984
f698d856 1985 ieee80211_set_disassoc(sdata, ifsta, 0);
f0706e82
JB		 1986}
1987
1988
471b3efd 1989static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 1990 struct ieee80211_if_sta *ifsta,
1991 struct ieee80211_mgmt *mgmt,
1992 size_t len,
1993 int reassoc)
1994{
471b3efd 1995 struct ieee80211_local *local = sdata->local;
8318d78a 1996 struct ieee80211_supported_band *sband;
f0706e82 1997 struct sta_info *sta;
8318d78a 1998 u64 rates, basic_rates;
f0706e82
JB		 1999 u16 capab_info, status_code, aid;
2000 struct ieee802_11_elems elems;
471b3efd 2001 struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
f0706e82
JB		 2002 u8 *pos;
2003 int i, j;
0795af57 2004 DECLARE_MAC_BUF(mac);
8318d78a 2005 bool have_higher_than_11mbit = false;
f0706e82
JB		 2006
2007 /* AssocResp and ReassocResp have identical structure, so process both
2008 * of them in this function. */
2009
48c2fc59 2010 if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE)
f0706e82 2011 return;
f0706e82 2012
f4ea83dd 2013 if (len < 24 + 6)
f0706e82 2014 return;
f0706e82 2015
f4ea83dd 2016 if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
f0706e82 2017 return;
f0706e82
JB		 2018
2019 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2020 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2021 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
f0706e82 2022
0795af57 2023 printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
f0706e82 2024 "status=%d aid=%d)\n",
f698d856 2025 sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
ddd68587 2026 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
f0706e82
JB		 2027
2028 if (status_code != WLAN_STATUS_SUCCESS) {
2029 printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
f698d856 2030 sdata->dev->name, status_code);
8a69aa93
DD		 2031 /* if this was a reassociation, ensure we try a "full"
2032 * association next time. This works around some broken APs
2033 * which do not correctly reject reassociation requests. */
d6f2da5b 2034 ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
f0706e82
JB		 2035 return;
2036 }
2037
1dd84aa2
JB		 2038 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
2039 printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
f698d856 2040 "set\n", sdata->dev->name, aid);
1dd84aa2
JB		 2041 aid &= ~(BIT(15) | BIT(14));
2042
f0706e82 2043 pos = mgmt->u.assoc_resp.variable;
67a4cce4 2044 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
f0706e82
JB		 2045
2046 if (!elems.supp_rates) {
2047 printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
f698d856 2048 sdata->dev->name);
f0706e82
JB		 2049 return;
2050 }
2051
f698d856 2052 printk(KERN_DEBUG "%s: associated\n", sdata->dev->name);
f0706e82
JB		 2053 ifsta->aid = aid;
2054 ifsta->ap_capab = capab_info;
2055
2056 kfree(ifsta->assocresp_ies);
2057 ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
0ec0b7ac 2058 ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
f0706e82
JB		 2059 if (ifsta->assocresp_ies)
2060 memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
2061
d0709a65
JB		 2062 rcu_read_lock();
2063
f0706e82
JB		 2064 /* Add STA entry for the AP */
2065 sta = sta_info_get(local, ifsta->bssid);
2066 if (!sta) {
2067 struct ieee80211_sta_bss *bss;
73651ee6 2068 int err;
d0709a65 2069
73651ee6
JB		 2070 sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
2071 if (!sta) {
2072 printk(KERN_DEBUG "%s: failed to alloc STA entry for"
f698d856 2073 " the AP\n", sdata->dev->name);
d0709a65 2074 rcu_read_unlock();
f0706e82
JB		 2075 return;
2076 }
f698d856 2077 bss = ieee80211_rx_bss_get(local, ifsta->bssid,
8318d78a 2078 local->hw.conf.channel->center_freq,
cffdd30d 2079 ifsta->ssid, ifsta->ssid_len);
f0706e82 2080 if (bss) {
f0706e82 2081 sta->last_signal = bss->signal;
566bfe5a 2082 sta->last_qual = bss->qual;
f0706e82 2083 sta->last_noise = bss->noise;
3e122be0 2084 ieee80211_rx_bss_put(local, bss);
f0706e82 2085 }
73651ee6
JB		 2086
2087 err = sta_info_insert(sta);
2088 if (err) {
2089 printk(KERN_DEBUG "%s: failed to insert STA entry for"
f698d856 2090 " the AP (error %d)\n", sdata->dev->name, err);
73651ee6
JB		 2091 rcu_read_unlock();
2092 return;
2093 }
a61dae1f
RR		 2094 /* update new sta with its last rx activity */
2095 sta->last_rx = jiffies;
f0706e82
JB		 2096 }
2097
73651ee6
JB		 2098 /*
2099 * FIXME: Do we really need to update the sta_info's information here?
2100 * We already know about the AP (we found it in our list) so it
2101 * should already be filled with the right info, no?
2102 * As is stands, all this is racy because typically we assume
2103 * the information that is filled in here (except flags) doesn't
2104 * change while a STA structure is alive. As such, it should move
2105 * to between the sta_info_alloc() and sta_info_insert() above.
2106 */
2107
07346f81
JB		 2108 set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP |
2109 WLAN_STA_AUTHORIZED);
f0706e82
JB		 2110
2111 rates = 0;
8318d78a
JB		 2112 basic_rates = 0;
2113 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
2114
f0706e82
JB		 2115 for (i = 0; i < elems.supp_rates_len; i++) {
2116 int rate = (elems.supp_rates[i] & 0x7f) * 5;
8318d78a
JB		 2117
2118 if (rate > 110)
2119 have_higher_than_11mbit = true;
2120
2121 for (j = 0; j < sband->n_bitrates; j++) {
2122 if (sband->bitrates[j].bitrate == rate)
f0706e82 2123 rates |= BIT(j);
8318d78a
JB		 2124 if (elems.supp_rates[i] & 0x80)
2125 basic_rates |= BIT(j);
2126 }
f0706e82 2127 }
8318d78a 2128
f0706e82
JB		 2129 for (i = 0; i < elems.ext_supp_rates_len; i++) {
2130 int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
8318d78a
JB		 2131
2132 if (rate > 110)
2133 have_higher_than_11mbit = true;
2134
2135 for (j = 0; j < sband->n_bitrates; j++) {
2136 if (sband->bitrates[j].bitrate == rate)
f0706e82 2137 rates |= BIT(j);
8318d78a
JB		 2138 if (elems.ext_supp_rates[i] & 0x80)
2139 basic_rates |= BIT(j);
2140 }
f0706e82 2141 }
8318d78a
JB		 2142
2143 sta->supp_rates[local->hw.conf.channel->band] = rates;
2144 sdata->basic_rates = basic_rates;
2145
2146 /* cf. IEEE 802.11 9.2.12 */
2147 if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
2148 have_higher_than_11mbit)
2149 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
2150 else
2151 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
f0706e82 2152
3434fbd3
JB		 2153 if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
2154 (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
d3c990fb 2155 struct ieee80211_ht_bss_info bss_info;
d3c990fb
RR		 2156 ieee80211_ht_cap_ie_to_ht_info(
2157 (struct ieee80211_ht_cap *)
2158 elems.ht_cap_elem, &sta->ht_info);
2159 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2160 (struct ieee80211_ht_addt_info *)
2161 elems.ht_info_elem, &bss_info);
38668c05 2162 ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
d3c990fb
RR		 2163 }
2164
f0706e82
JB		 2165 rate_control_rate_init(sta, local);
2166
3434fbd3 2167 if (elems.wmm_param) {
07346f81 2168 set_sta_flags(sta, WLAN_STA_WME);
e5f98f2d 2169 rcu_read_unlock();
f698d856 2170 ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
f0706e82 2171 elems.wmm_param_len);
e5f98f2d
JB		 2172 } else
2173 rcu_read_unlock();
f0706e82 2174
21c0cbe7
TW		 2175 /* set AID and assoc capability,
2176 * ieee80211_set_associated() will tell the driver */
8318d78a 2177 bss_conf->aid = aid;
21c0cbe7 2178 bss_conf->assoc_capability = capab_info;
f698d856 2179 ieee80211_set_associated(sdata, ifsta, 1);
f0706e82 2180
f698d856 2181 ieee80211_associated(sdata, ifsta);
f0706e82
JB		 2182}
2183
2184
2185/* Caller must hold local->sta_bss_lock */
f698d856 2186static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local,
f0706e82
JB		 2187 struct ieee80211_sta_bss *bss)
2188{
f709fc69 2189 u8 hash_idx;
902acc78
JB		 2190
2191 if (bss_mesh_cfg(bss))
2192 hash_idx = mesh_id_hash(bss_mesh_id(bss),
2193 bss_mesh_id_len(bss));
f709fc69 2194 else
f709fc69 2195 hash_idx = STA_HASH(bss->bssid);
902acc78 2196
f709fc69
LCC		 2197 bss->hnext = local->sta_bss_hash[hash_idx];
2198 local->sta_bss_hash[hash_idx] = bss;
f0706e82
JB		 2199}
2200
2201
2202/* Caller must hold local->sta_bss_lock */
3e122be0 2203static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local,
f0706e82
JB		 2204 struct ieee80211_sta_bss *bss)
2205{
f0706e82
JB		 2206 struct ieee80211_sta_bss *b, *prev = NULL;
2207 b = local->sta_bss_hash[STA_HASH(bss->bssid)];
2208 while (b) {
2209 if (b == bss) {
2210 if (!prev)
2211 local->sta_bss_hash[STA_HASH(bss->bssid)] =
2212 bss->hnext;
2213 else
2214 prev->hnext = bss->hnext;
2215 break;
2216 }
2217 prev = b;
2218 b = b->hnext;
2219 }
2220}
2221
2222
2223static struct ieee80211_sta_bss *
f698d856 2224ieee80211_rx_bss_add(struct ieee80211_sub_if_data *sdata, u8 *bssid, int freq,
cffdd30d 2225 u8 *ssid, u8 ssid_len)
f0706e82 2226{
f698d856 2227 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 2228 struct ieee80211_sta_bss *bss;
2229
dd00cc48 2230 bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
f0706e82
JB		 2231 if (!bss)
2232 return NULL;
f0706e82
JB		 2233 atomic_inc(&bss->users);
2234 atomic_inc(&bss->users);
2235 memcpy(bss->bssid, bssid, ETH_ALEN);
8318d78a 2236 bss->freq = freq;
cffdd30d
JL		 2237 if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
2238 memcpy(bss->ssid, ssid, ssid_len);
2239 bss->ssid_len = ssid_len;
2240 }
f0706e82
JB		 2241
2242 spin_lock_bh(&local->sta_bss_lock);
2243 /* TODO: order by RSSI? */
2244 list_add_tail(&bss->list, &local->sta_bss_list);
f698d856 2245 __ieee80211_rx_bss_hash_add(local, bss);
f0706e82
JB		 2246 spin_unlock_bh(&local->sta_bss_lock);
2247 return bss;
2248}
2249
f0706e82 2250static struct ieee80211_sta_bss *
f698d856 2251ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
cffdd30d 2252 u8 *ssid, u8 ssid_len)
f0706e82 2253{
f0706e82
JB		 2254 struct ieee80211_sta_bss *bss;
2255
2256 spin_lock_bh(&local->sta_bss_lock);
2257 bss = local->sta_bss_hash[STA_HASH(bssid)];
2258 while (bss) {
902acc78
JB		 2259 if (!bss_mesh_cfg(bss) &&
2260 !memcmp(bss->bssid, bssid, ETH_ALEN) &&
8318d78a 2261 bss->freq == freq &&
cffdd30d
JL		 2262 bss->ssid_len == ssid_len &&
2263 (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
f0706e82
JB		 2264 atomic_inc(&bss->users);
2265 break;
2266 }
2267 bss = bss->hnext;
2268 }
2269 spin_unlock_bh(&local->sta_bss_lock);
2270 return bss;
2271}
2272
f709fc69
LCC		 2273#ifdef CONFIG_MAC80211_MESH
2274static struct ieee80211_sta_bss *
f698d856 2275ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
f709fc69
LCC		 2276 u8 *mesh_cfg, int freq)
2277{
f709fc69
LCC		 2278 struct ieee80211_sta_bss *bss;
2279
2280 spin_lock_bh(&local->sta_bss_lock);
2281 bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
2282 while (bss) {
902acc78
JB		 2283 if (bss_mesh_cfg(bss) &&
2284 !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
f709fc69
LCC		 2285 bss->freq == freq &&
2286 mesh_id_len == bss->mesh_id_len &&
2287 (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
2288 mesh_id_len))) {
2289 atomic_inc(&bss->users);
2290 break;
2291 }
2292 bss = bss->hnext;
2293 }
2294 spin_unlock_bh(&local->sta_bss_lock);
2295 return bss;
2296}
2297
2298static struct ieee80211_sta_bss *
f698d856 2299ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
05e5e883 2300 u8 *mesh_cfg, int mesh_config_len, int freq)
f709fc69 2301{
f709fc69
LCC		 2302 struct ieee80211_sta_bss *bss;
2303
05e5e883
LCC		 2304 if (mesh_config_len != MESH_CFG_LEN)
2305 return NULL;
2306
f709fc69
LCC		 2307 bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
2308 if (!bss)
2309 return NULL;
2310
24736701 2311 bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
f709fc69
LCC		 2312 if (!bss->mesh_cfg) {
2313 kfree(bss);
2314 return NULL;
2315 }
2316
2317 if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
2318 bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
2319 if (!bss->mesh_id) {
2320 kfree(bss->mesh_cfg);
2321 kfree(bss);
2322 return NULL;
2323 }
2324 memcpy(bss->mesh_id, mesh_id, mesh_id_len);
2325 }
2326
2327 atomic_inc(&bss->users);
2328 atomic_inc(&bss->users);
24736701 2329 memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
f709fc69
LCC		 2330 bss->mesh_id_len = mesh_id_len;
2331 bss->freq = freq;
2332 spin_lock_bh(&local->sta_bss_lock);
2333 /* TODO: order by RSSI? */
2334 list_add_tail(&bss->list, &local->sta_bss_list);
f698d856 2335 __ieee80211_rx_bss_hash_add(local, bss);
f709fc69
LCC		 2336 spin_unlock_bh(&local->sta_bss_lock);
2337 return bss;
2338}
2339#endif
f0706e82
JB		 2340
2341static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
2342{
2343 kfree(bss->wpa_ie);
2344 kfree(bss->rsn_ie);
2345 kfree(bss->wmm_ie);
c7153508 2346 kfree(bss->ht_ie);
9306102e 2347 kfree(bss->ht_add_ie);
902acc78
JB		 2348 kfree(bss_mesh_id(bss));
2349 kfree(bss_mesh_cfg(bss));
f0706e82
JB		 2350 kfree(bss);
2351}
2352
2353
3e122be0 2354static void ieee80211_rx_bss_put(struct ieee80211_local *local,
f0706e82
JB		 2355 struct ieee80211_sta_bss *bss)
2356{
1ebebea8
PE		 2357 local_bh_disable();
2358 if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
2359 local_bh_enable();
f0706e82 2360 return;
1ebebea8 2361 }
f0706e82 2362
3e122be0 2363 __ieee80211_rx_bss_hash_del(local, bss);
f0706e82
JB		 2364 list_del(&bss->list);
2365 spin_unlock_bh(&local->sta_bss_lock);
2366 ieee80211_rx_bss_free(bss);
2367}
2368
2369
3e122be0 2370void ieee80211_rx_bss_list_init(struct ieee80211_local *local)
f0706e82 2371{
f0706e82
JB		 2372 spin_lock_init(&local->sta_bss_lock);
2373 INIT_LIST_HEAD(&local->sta_bss_list);
2374}
2375
2376
3e122be0 2377void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local)
f0706e82 2378{
f0706e82
JB		 2379 struct ieee80211_sta_bss *bss, *tmp;
2380
2381 list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
3e122be0 2382 ieee80211_rx_bss_put(local, bss);
f0706e82
JB		 2383}
2384
2385
f698d856 2386static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
a607268a
BR		 2387 struct ieee80211_if_sta *ifsta,
2388 struct ieee80211_sta_bss *bss)
2389{
f698d856 2390 struct ieee80211_local *local = sdata->local;
a607268a
BR		 2391 int res, rates, i, j;
2392 struct sk_buff *skb;
2393 struct ieee80211_mgmt *mgmt;
a607268a 2394 u8 *pos;
a607268a 2395 struct ieee80211_supported_band *sband;
507b06d0 2396 union iwreq_data wrqu;
a607268a
BR		 2397
2398 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
2399
2400 /* Remove possible STA entries from other IBSS networks. */
dc6676b7 2401 sta_info_flush_delayed(sdata);
a607268a
BR		 2402
2403 if (local->ops->reset_tsf) {
2404 /* Reset own TSF to allow time synchronization work. */
2405 local->ops->reset_tsf(local_to_hw(local));
2406 }
2407 memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
9d139c81 2408 res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
a607268a
BR		 2409 if (res)
2410 return res;
2411
2412 local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2413
a607268a
BR		 2414 sdata->drop_unencrypted = bss->capability &
2415 WLAN_CAPABILITY_PRIVACY ? 1 : 0;
2416
f698d856 2417 res = ieee80211_set_freq(sdata, bss->freq);
a607268a 2418
be038b37
AK		 2419 if (res)
2420 return res;
a607268a 2421
9d139c81 2422 /* Build IBSS probe response */
a607268a 2423 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
9d139c81 2424 if (skb) {
a607268a
BR		 2425 skb_reserve(skb, local->hw.extra_tx_headroom);
2426
2427 mgmt = (struct ieee80211_mgmt *)
2428 skb_put(skb, 24 + sizeof(mgmt->u.beacon));
2429 memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
e7827a70
HH		 2430 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2431 IEEE80211_STYPE_PROBE_RESP);
a607268a 2432 memset(mgmt->da, 0xff, ETH_ALEN);
f698d856 2433 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
a607268a
BR		 2434 memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
2435 mgmt->u.beacon.beacon_int =
2436 cpu_to_le16(local->hw.conf.beacon_int);
4faeb860 2437 mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp);
a607268a
BR		 2438 mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
2439
2440 pos = skb_put(skb, 2 + ifsta->ssid_len);
2441 *pos++ = WLAN_EID_SSID;
2442 *pos++ = ifsta->ssid_len;
2443 memcpy(pos, ifsta->ssid, ifsta->ssid_len);
2444
2445 rates = bss->supp_rates_len;
2446 if (rates > 8)
2447 rates = 8;
2448 pos = skb_put(skb, 2 + rates);
2449 *pos++ = WLAN_EID_SUPP_RATES;
2450 *pos++ = rates;
2451 memcpy(pos, bss->supp_rates, rates);
2452
2453 if (bss->band == IEEE80211_BAND_2GHZ) {
2454 pos = skb_put(skb, 2 + 1);
2455 *pos++ = WLAN_EID_DS_PARAMS;
2456 *pos++ = 1;
2457 *pos++ = ieee80211_frequency_to_channel(bss->freq);
2458 }
2459
2460 pos = skb_put(skb, 2 + 2);
2461 *pos++ = WLAN_EID_IBSS_PARAMS;
2462 *pos++ = 2;
2463 /* FIX: set ATIM window based on scan results */
2464 *pos++ = 0;
2465 *pos++ = 0;
2466
2467 if (bss->supp_rates_len > 8) {
2468 rates = bss->supp_rates_len - 8;
2469 pos = skb_put(skb, 2 + rates);
2470 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2471 *pos++ = rates;
2472 memcpy(pos, &bss->supp_rates[8], rates);
2473 }
2474
9d139c81 2475 ifsta->probe_resp = skb;
e039fa4a 2476
9d139c81
JB		 2477 ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
2478 }
a607268a 2479
9d139c81
JB		 2480 rates = 0;
2481 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
2482 for (i = 0; i < bss->supp_rates_len; i++) {
2483 int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
2484 for (j = 0; j < sband->n_bitrates; j++)
2485 if (sband->bitrates[j].bitrate == bitrate)
2486 rates |= BIT(j);
a607268a 2487 }
9d139c81
JB		 2488 ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
2489
f698d856 2490 ieee80211_sta_def_wmm_params(sdata, bss, 1);
a607268a 2491
48c2fc59 2492 ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED;
a607268a
BR		 2493 mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
2494
507b06d0
DW		 2495 memset(&wrqu, 0, sizeof(wrqu));
2496 memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
f698d856 2497 wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
a607268a
BR		 2498
2499 return res;
2500}
2501
f709fc69
LCC		 2502u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
2503 struct ieee802_11_elems *elems,
2504 enum ieee80211_band band)
2505{
2506 struct ieee80211_supported_band *sband;
2507 struct ieee80211_rate *bitrates;
2508 size_t num_rates;
2509 u64 supp_rates;
2510 int i, j;
2511 sband = local->hw.wiphy->bands[band];
2512
2513 if (!sband) {
2514 WARN_ON(1);
2515 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
2516 }
2517
2518 bitrates = sband->bitrates;
2519 num_rates = sband->n_bitrates;
2520 supp_rates = 0;
2521 for (i = 0; i < elems->supp_rates_len +
2522 elems->ext_supp_rates_len; i++) {
2523 u8 rate = 0;
2524 int own_rate;
2525 if (i < elems->supp_rates_len)
2526 rate = elems->supp_rates[i];
2527 else if (elems->ext_supp_rates)
2528 rate = elems->ext_supp_rates
2529 [i - elems->supp_rates_len];
2530 own_rate = 5 * (rate & 0x7f);
2531 for (j = 0; j < num_rates; j++)
2532 if (bitrates[j].bitrate == own_rate)
2533 supp_rates |= BIT(j);
2534 }
2535 return supp_rates;
2536}
2537
a607268a 2538
f698d856 2539static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 2540 struct ieee80211_mgmt *mgmt,
2541 size_t len,
2542 struct ieee80211_rx_status *rx_status,
ae6a44e3 2543 struct ieee802_11_elems *elems,
f0706e82
JB		 2544 int beacon)
2545{
f698d856 2546 struct ieee80211_local *local = sdata->local;
8318d78a 2547 int freq, clen;
f0706e82
JB		 2548 struct ieee80211_sta_bss *bss;
2549 struct sta_info *sta;
9d9bf77d 2550 u64 beacon_timestamp, rx_timestamp;
fab7d4a2 2551 struct ieee80211_channel *channel;
0795af57
JP		 2552 DECLARE_MAC_BUF(mac);
2553 DECLARE_MAC_BUF(mac2);
f0706e82 2554
9d9bf77d 2555 beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
f0706e82 2556
ae6a44e3 2557 if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
f698d856 2558 elems->mesh_config && mesh_matches_local(elems, sdata)) {
ae6a44e3 2559 u64 rates = ieee80211_sta_get_rates(local, elems,
902acc78
JB		 2560 rx_status->band);
2561
f698d856
JBG		 2562 mesh_neighbour_update(mgmt->sa, rates, sdata,
2563 mesh_peer_accepts_plinks(elems));
902acc78 2564 }
f709fc69 2565
d0709a65
JB		 2566 rcu_read_lock();
2567
ae6a44e3 2568 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates &&
f0706e82
JB		 2569 memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
2570 (sta = sta_info_get(local, mgmt->sa))) {
f709fc69 2571 u64 prev_rates;
ae6a44e3 2572 u64 supp_rates = ieee80211_sta_get_rates(local, elems,
f709fc69 2573 rx_status->band);
f0706e82 2574
8318d78a
JB		 2575 prev_rates = sta->supp_rates[rx_status->band];
2576 sta->supp_rates[rx_status->band] &= supp_rates;
2577 if (sta->supp_rates[rx_status->band] == 0) {
f0706e82
JB		 2578 /* No matching rates - this should not really happen.
2579 * Make sure that at least one rate is marked
2580 * supported to avoid issues with TX rate ctrl. */
8318d78a
JB		 2581 sta->supp_rates[rx_status->band] =
2582 sdata->u.sta.supp_rates_bits[rx_status->band];
f0706e82 2583 }
f0706e82
JB		 2584 }
2585
d0709a65
JB		 2586 rcu_read_unlock();
2587
ae6a44e3
EK		 2588 if (elems->ds_params && elems->ds_params_len == 1)
2589 freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
f0706e82 2590 else
8318d78a 2591 freq = rx_status->freq;
f0706e82 2592
fab7d4a2
JB		 2593 channel = ieee80211_get_channel(local->hw.wiphy, freq);
2594
2595 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
2596 return;
2597
f709fc69 2598#ifdef CONFIG_MAC80211_MESH
ae6a44e3 2599 if (elems->mesh_config)
f698d856 2600 bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
ae6a44e3 2601 elems->mesh_id_len, elems->mesh_config, freq);
f709fc69
LCC		 2602 else
2603#endif
f698d856 2604 bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq,
ae6a44e3 2605 elems->ssid, elems->ssid_len);
f709fc69
LCC		 2606 if (!bss) {
2607#ifdef CONFIG_MAC80211_MESH
ae6a44e3 2608 if (elems->mesh_config)
f698d856 2609 bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id,
ae6a44e3
EK		 2610 elems->mesh_id_len, elems->mesh_config,
2611 elems->mesh_config_len, freq);
f709fc69
LCC		 2612 else
2613#endif
f698d856 2614 bss = ieee80211_rx_bss_add(sdata, mgmt->bssid, freq,
ae6a44e3 2615 elems->ssid, elems->ssid_len);
f0706e82
JB		 2616 if (!bss)
2617 return;
2618 } else {
2619#if 0
2620 /* TODO: order by RSSI? */
2621 spin_lock_bh(&local->sta_bss_lock);
2622 list_move_tail(&bss->list, &local->sta_bss_list);
2623 spin_unlock_bh(&local->sta_bss_lock);
2624#endif
2625 }
2626
5628221c 2627 /* save the ERP value so that it is available at association time */
ae6a44e3
EK		 2628 if (elems->erp_info && elems->erp_info_len >= 1) {
2629 bss->erp_value = elems->erp_info[0];
5628221c
DD		 2630 bss->has_erp_value = 1;
2631 }
2632
ae6a44e3
EK		 2633 if (elems->ht_cap_elem &&
2634 (!bss->ht_ie || bss->ht_ie_len != elems->ht_cap_elem_len ||
2635 memcmp(bss->ht_ie, elems->ht_cap_elem, elems->ht_cap_elem_len))) {
30b89b0f 2636 kfree(bss->ht_ie);
ae6a44e3 2637 bss->ht_ie = kmalloc(elems->ht_cap_elem_len + 2, GFP_ATOMIC);
30b89b0f 2638 if (bss->ht_ie) {
ae6a44e3
EK		 2639 memcpy(bss->ht_ie, elems->ht_cap_elem - 2,
2640 elems->ht_cap_elem_len + 2);
2641 bss->ht_ie_len = elems->ht_cap_elem_len + 2;
30b89b0f
JB		 2642 } else
2643 bss->ht_ie_len = 0;
ae6a44e3 2644 } else if (!elems->ht_cap_elem && bss->ht_ie) {
30b89b0f
JB		 2645 kfree(bss->ht_ie);
2646 bss->ht_ie = NULL;
2647 bss->ht_ie_len = 0;
2648 }
2649
ae6a44e3 2650 if (elems->ht_info_elem &&
9306102e 2651 (!bss->ht_add_ie ||
ae6a44e3
EK		 2652 bss->ht_add_ie_len != elems->ht_info_elem_len ||
2653 memcmp(bss->ht_add_ie, elems->ht_info_elem,
2654 elems->ht_info_elem_len))) {
9306102e
EG		 2655 kfree(bss->ht_add_ie);
2656 bss->ht_add_ie =
ae6a44e3 2657 kmalloc(elems->ht_info_elem_len + 2, GFP_ATOMIC);
9306102e 2658 if (bss->ht_add_ie) {
ae6a44e3
EK		 2659 memcpy(bss->ht_add_ie, elems->ht_info_elem - 2,
2660 elems->ht_info_elem_len + 2);
2661 bss->ht_add_ie_len = elems->ht_info_elem_len + 2;
9306102e
EG		 2662 } else
2663 bss->ht_add_ie_len = 0;
ae6a44e3 2664 } else if (!elems->ht_info_elem && bss->ht_add_ie) {
9306102e
EG		 2665 kfree(bss->ht_add_ie);
2666 bss->ht_add_ie = NULL;
2667 bss->ht_add_ie_len = 0;
2668 }
2669
f0706e82
JB		 2670 bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
2671 bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
f0706e82 2672
98f7dfd8
EG		 2673 if (elems->tim) {
2674 struct ieee80211_tim_ie *tim_ie =
2675 (struct ieee80211_tim_ie *)elems->tim;
2676 bss->dtim_period = tim_ie->dtim_period;
2677 }
2678
2679 /* set default value for buggy APs */
2680 if (!elems->tim || bss->dtim_period == 0)
2681 bss->dtim_period = 1;
2682
f0706e82 2683 bss->supp_rates_len = 0;
ae6a44e3 2684 if (elems->supp_rates) {
f0706e82 2685 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
ae6a44e3
EK		 2686 if (clen > elems->supp_rates_len)
2687 clen = elems->supp_rates_len;
2688 memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates,
f0706e82
JB		 2689 clen);
2690 bss->supp_rates_len += clen;
2691 }
ae6a44e3 2692 if (elems->ext_supp_rates) {
f0706e82 2693 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
ae6a44e3
EK		 2694 if (clen > elems->ext_supp_rates_len)
2695 clen = elems->ext_supp_rates_len;
f0706e82 2696 memcpy(&bss->supp_rates[bss->supp_rates_len],
ae6a44e3 2697 elems->ext_supp_rates, clen);
f0706e82
JB		 2698 bss->supp_rates_len += clen;
2699 }
2700
30b89b0f
JB		 2701 bss->band = rx_status->band;
2702
2703 bss->timestamp = beacon_timestamp;
2704 bss->last_update = jiffies;
30b89b0f
JB		 2705 bss->signal = rx_status->signal;
2706 bss->noise = rx_status->noise;
566bfe5a 2707 bss->qual = rx_status->qual;
30b89b0f
JB		 2708 if (!beacon && !bss->probe_resp)
2709 bss->probe_resp = true;
2710
2711 /*
2712 * In STA mode, the remaining parameters should not be overridden
2713 * by beacons because they're not necessarily accurate there.
2714 */
2715 if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
2716 bss->probe_resp && beacon) {
3e122be0 2717 ieee80211_rx_bss_put(local, bss);
30b89b0f
JB		 2718 return;
2719 }
2720
ae6a44e3
EK		 2721 if (elems->wpa &&
2722 (!bss->wpa_ie || bss->wpa_ie_len != elems->wpa_len ||
2723 memcmp(bss->wpa_ie, elems->wpa, elems->wpa_len))) {
f0706e82 2724 kfree(bss->wpa_ie);
ae6a44e3 2725 bss->wpa_ie = kmalloc(elems->wpa_len + 2, GFP_ATOMIC);
f0706e82 2726 if (bss->wpa_ie) {
ae6a44e3
EK		 2727 memcpy(bss->wpa_ie, elems->wpa - 2, elems->wpa_len + 2);
2728 bss->wpa_ie_len = elems->wpa_len + 2;
f0706e82
JB		 2729 } else
2730 bss->wpa_ie_len = 0;
ae6a44e3 2731 } else if (!elems->wpa && bss->wpa_ie) {
f0706e82
JB		 2732 kfree(bss->wpa_ie);
2733 bss->wpa_ie = NULL;
2734 bss->wpa_ie_len = 0;
2735 }
2736
ae6a44e3
EK		 2737 if (elems->rsn &&
2738 (!bss->rsn_ie || bss->rsn_ie_len != elems->rsn_len ||
2739 memcmp(bss->rsn_ie, elems->rsn, elems->rsn_len))) {
f0706e82 2740 kfree(bss->rsn_ie);
ae6a44e3 2741 bss->rsn_ie = kmalloc(elems->rsn_len + 2, GFP_ATOMIC);
f0706e82 2742 if (bss->rsn_ie) {
ae6a44e3
EK		 2743 memcpy(bss->rsn_ie, elems->rsn - 2, elems->rsn_len + 2);
2744 bss->rsn_ie_len = elems->rsn_len + 2;
f0706e82
JB		 2745 } else
2746 bss->rsn_ie_len = 0;
ae6a44e3 2747 } else if (!elems->rsn && bss->rsn_ie) {
f0706e82
JB		 2748 kfree(bss->rsn_ie);
2749 bss->rsn_ie = NULL;
2750 bss->rsn_ie_len = 0;
2751 }
2752
30b89b0f
JB		 2753 /*
2754 * Cf.
2755 * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
2756 *
2757 * quoting:
2758 *
2759 * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
2760 * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
2761 * Alliance (September 1, 2004) is incorporated by reference herein.
2762 * The inclusion of the WMM Parameters in probe responses and
2763 * association responses is mandatory for WMM enabled networks. The
2764 * inclusion of the WMM Parameters in beacons, however, is optional.
2765 */
2766
ae6a44e3
EK		 2767 if (elems->wmm_param &&
2768 (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_param_len ||
2769 memcmp(bss->wmm_ie, elems->wmm_param, elems->wmm_param_len))) {
f0706e82 2770 kfree(bss->wmm_ie);
ae6a44e3 2771 bss->wmm_ie = kmalloc(elems->wmm_param_len + 2, GFP_ATOMIC);
f0706e82 2772 if (bss->wmm_ie) {
ae6a44e3
EK		 2773 memcpy(bss->wmm_ie, elems->wmm_param - 2,
2774 elems->wmm_param_len + 2);
2775 bss->wmm_ie_len = elems->wmm_param_len + 2;
f0706e82
JB		 2776 } else
2777 bss->wmm_ie_len = 0;
ae6a44e3
EK		 2778 } else if (elems->wmm_info &&
2779 (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_info_len ||
2780 memcmp(bss->wmm_ie, elems->wmm_info,
2781 elems->wmm_info_len))) {
a46f025d
AK		 2782 /* As for certain AP's Fifth bit is not set in WMM IE in
2783 * beacon frames.So while parsing the beacon frame the
2784 * wmm_info structure is used instead of wmm_param.
2785 * wmm_info structure was never used to set bss->wmm_ie.
2786 * This code fixes this problem by copying the WME
2787 * information from wmm_info to bss->wmm_ie and enabling
2788 * n-band association.
2789 */
2790 kfree(bss->wmm_ie);
ae6a44e3 2791 bss->wmm_ie = kmalloc(elems->wmm_info_len + 2, GFP_ATOMIC);
a46f025d 2792 if (bss->wmm_ie) {
ae6a44e3
EK		 2793 memcpy(bss->wmm_ie, elems->wmm_info - 2,
2794 elems->wmm_info_len + 2);
2795 bss->wmm_ie_len = elems->wmm_info_len + 2;
a46f025d
AK		 2796 } else
2797 bss->wmm_ie_len = 0;
ae6a44e3 2798 } else if (!elems->wmm_param && !elems->wmm_info && bss->wmm_ie) {
f0706e82
JB		 2799 kfree(bss->wmm_ie);
2800 bss->wmm_ie = NULL;
2801 bss->wmm_ie_len = 0;
2802 }
9d9bf77d
BR		 2803
2804 /* check if we need to merge IBSS */
2805 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
2806 !local->sta_sw_scanning && !local->sta_hw_scanning &&
fba4a1e6 2807 bss->capability & WLAN_CAPABILITY_IBSS &&
9d9bf77d 2808 bss->freq == local->oper_channel->center_freq &&
ae6a44e3
EK		 2809 elems->ssid_len == sdata->u.sta.ssid_len &&
2810 memcmp(elems->ssid, sdata->u.sta.ssid,
2811 sdata->u.sta.ssid_len) == 0) {
9d9bf77d
BR		 2812 if (rx_status->flag & RX_FLAG_TSFT) {
2813 /* in order for correct IBSS merging we need mactime
2814 *
2815 * since mactime is defined as the time the first data
2816 * symbol of the frame hits the PHY, and the timestamp
2817 * of the beacon is defined as "the time that the data
2818 * symbol containing the first bit of the timestamp is
2819 * transmitted to the PHY plus the transmitting STA’s
2820 * delays through its local PHY from the MAC-PHY
2821 * interface to its interface with the WM"
2822 * (802.11 11.1.2) - equals the time this bit arrives at
2823 * the receiver - we have to take into account the
2824 * offset between the two.
2825 * e.g: at 1 MBit that means mactime is 192 usec earlier
2826 * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
2827 */
2828 int rate = local->hw.wiphy->bands[rx_status->band]->
2829 bitrates[rx_status->rate_idx].bitrate;
2830 rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate);
2831 } else if (local && local->ops && local->ops->get_tsf)
2832 /* second best option: get current TSF */
2833 rx_timestamp = local->ops->get_tsf(local_to_hw(local));
2834 else
2835 /* can't merge without knowing the TSF */
2836 rx_timestamp = -1LLU;
2837#ifdef CONFIG_MAC80211_IBSS_DEBUG
2838 printk(KERN_DEBUG "RX beacon SA=%s BSSID="
2839 "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
2840 print_mac(mac, mgmt->sa),
2841 print_mac(mac2, mgmt->bssid),
2842 (unsigned long long)rx_timestamp,
2843 (unsigned long long)beacon_timestamp,
2844 (unsigned long long)(rx_timestamp - beacon_timestamp),
2845 jiffies);
2846#endif /* CONFIG_MAC80211_IBSS_DEBUG */
2847 if (beacon_timestamp > rx_timestamp) {
fba4a1e6 2848#ifndef CONFIG_MAC80211_IBSS_DEBUG
f4ea83dd
JB		 2849 printk(KERN_DEBUG "%s: beacon TSF higher than "
2850 "local TSF - IBSS merge with BSSID %s\n",
f698d856 2851 sdata->dev->name, print_mac(mac, mgmt->bssid));
fba4a1e6 2852#endif
f698d856
JBG		 2853 ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss);
2854 ieee80211_ibss_add_sta(sdata, NULL,
87291c02
VK		 2855 mgmt->bssid, mgmt->sa,
2856 BIT(rx_status->rate_idx));
9d9bf77d
BR		 2857 }
2858 }
2859
3e122be0 2860 ieee80211_rx_bss_put(local, bss);
f0706e82
JB		 2861}
2862
2863
f698d856 2864static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 2865 struct ieee80211_mgmt *mgmt,
2866 size_t len,
2867 struct ieee80211_rx_status *rx_status)
2868{
ae6a44e3
EK		 2869 size_t baselen;
2870 struct ieee802_11_elems elems;
2871
8e7cdbb6
TW		 2872 if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN))
2873 return; /* ignore ProbeResp to foreign address */
2874
ae6a44e3
EK		 2875 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2876 if (baselen > len)
2877 return;
2878
2879 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
2880 &elems);
2881
f698d856 2882 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, 0);
f0706e82
JB		 2883}
2884
2885
f698d856 2886static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 2887 struct ieee80211_mgmt *mgmt,
2888 size_t len,
2889 struct ieee80211_rx_status *rx_status)
2890{
f0706e82 2891 struct ieee80211_if_sta *ifsta;
f0706e82
JB		 2892 size_t baselen;
2893 struct ieee802_11_elems elems;
f698d856 2894 struct ieee80211_local *local = sdata->local;
d3c990fb 2895 struct ieee80211_conf *conf = &local->hw.conf;
471b3efd 2896 u32 changed = 0;
f0706e82 2897
ae6a44e3
EK		 2898 /* Process beacon from the current BSS */
2899 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2900 if (baselen > len)
2901 return;
2902
2903 ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
2904
f698d856 2905 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, 1);
f0706e82 2906
51fb61e7 2907 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
f0706e82
JB		 2908 return;
2909 ifsta = &sdata->u.sta;
2910
d6f2da5b 2911 if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
f0706e82
JB		 2912 memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
2913 return;
2914
f698d856 2915 ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
3434fbd3 2916 elems.wmm_param_len);
d18ef29f
RC		 2917
2918 /* Do not send changes to driver if we are scanning. This removes
2919 * requirement that driver's bss_info_changed function needs to be
2920 * atomic. */
2921 if (local->sta_sw_scanning || local->sta_hw_scanning)
2922 return;
2923
5628221c 2924 if (elems.erp_info && elems.erp_info_len >= 1)
471b3efd 2925 changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
50c4afb9
JL		 2926 else {
2927 u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info);
2928 changed |= ieee80211_handle_protect_preamb(sdata, false,
2929 (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
2930 }
f0706e82 2931
d3c990fb 2932 if (elems.ht_cap_elem && elems.ht_info_elem &&
38668c05 2933 elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
d3c990fb
RR		 2934 struct ieee80211_ht_bss_info bss_info;
2935
2936 ieee80211_ht_addt_info_ie_to_ht_bss_info(
2937 (struct ieee80211_ht_addt_info *)
2938 elems.ht_info_elem, &bss_info);
38668c05
TW		 2939 changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
2940 &bss_info);
d3c990fb
RR		 2941 }
2942
471b3efd 2943 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 2944}
2945
2946
f698d856 2947static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 2948 struct ieee80211_if_sta *ifsta,
2949 struct ieee80211_mgmt *mgmt,
2950 size_t len,
2951 struct ieee80211_rx_status *rx_status)
2952{
f698d856 2953 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 2954 int tx_last_beacon;
2955 struct sk_buff *skb;
2956 struct ieee80211_mgmt *resp;
2957 u8 *pos, *end;
0795af57
JP		 2958 DECLARE_MAC_BUF(mac);
2959#ifdef CONFIG_MAC80211_IBSS_DEBUG
2960 DECLARE_MAC_BUF(mac2);
2961 DECLARE_MAC_BUF(mac3);
2962#endif
f0706e82 2963
51fb61e7 2964 if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS ||
48c2fc59 2965 ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED ||
f0706e82
JB		 2966 len < 24 + 2 || !ifsta->probe_resp)
2967 return;
2968
2969 if (local->ops->tx_last_beacon)
2970 tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
2971 else
2972 tx_last_beacon = 1;
2973
2974#ifdef CONFIG_MAC80211_IBSS_DEBUG
0795af57
JP		 2975 printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
2976 "%s (tx_last_beacon=%d)\n",
f698d856 2977 sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
0795af57 2978 print_mac(mac3, mgmt->bssid), tx_last_beacon);
f0706e82
JB		 2979#endif /* CONFIG_MAC80211_IBSS_DEBUG */
2980
2981 if (!tx_last_beacon)
2982 return;
2983
2984 if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
2985 memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2986 return;
2987
2988 end = ((u8 *) mgmt) + len;
2989 pos = mgmt->u.probe_req.variable;
2990 if (pos[0] != WLAN_EID_SSID ||
2991 pos + 2 + pos[1] > end) {
f4ea83dd
JB		 2992#ifdef CONFIG_MAC80211_IBSS_DEBUG
2993 printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
2994 "from %s\n",
f698d856 2995 sdata->dev->name, print_mac(mac, mgmt->sa));
f4ea83dd 2996#endif
f0706e82
JB		 2997 return;
2998 }
2999 if (pos[1] != 0 &&
3000 (pos[1] != ifsta->ssid_len ||
3001 memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
3002 /* Ignore ProbeReq for foreign SSID */
3003 return;
3004 }
3005
3006 /* Reply with ProbeResp */
0ec0b7ac 3007 skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
f0706e82
JB		 3008 if (!skb)
3009 return;
3010
3011 resp = (struct ieee80211_mgmt *) skb->data;
3012 memcpy(resp->da, mgmt->sa, ETH_ALEN);
3013#ifdef CONFIG_MAC80211_IBSS_DEBUG
0795af57 3014 printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
f698d856 3015 sdata->dev->name, print_mac(mac, resp->da));
f0706e82 3016#endif /* CONFIG_MAC80211_IBSS_DEBUG */
f698d856 3017 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 3018}
3019
f698d856 3020static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
4e20cb29
JB		 3021 struct ieee80211_if_sta *ifsta,
3022 struct ieee80211_mgmt *mgmt,
f709fc69
LCC		 3023 size_t len,
3024 struct ieee80211_rx_status *rx_status)
9f985b0e 3025{
f698d856 3026 struct ieee80211_local *local = sdata->local;
f709fc69 3027
9f985b0e
RR		 3028 if (len < IEEE80211_MIN_ACTION_SIZE)
3029 return;
3030
3031 switch (mgmt->u.action.category) {
b6623486
AK		 3032 case WLAN_CATEGORY_SPECTRUM_MGMT:
3033 if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
3034 break;
3035 switch (mgmt->u.action.u.chan_switch.action_code) {
3036 case WLAN_ACTION_SPCT_MSR_REQ:
3037 if (len < (IEEE80211_MIN_ACTION_SIZE +
3038 sizeof(mgmt->u.action.u.measurement)))
3039 break;
f698d856 3040 ieee80211_sta_process_measurement_req(sdata, mgmt, len);
b6623486
AK		 3041 break;
3042 }
3043 break;
9f985b0e
RR		 3044 case WLAN_CATEGORY_BACK:
3045 switch (mgmt->u.action.u.addba_req.action_code) {
3046 case WLAN_ACTION_ADDBA_REQ:
3047 if (len < (IEEE80211_MIN_ACTION_SIZE +
3048 sizeof(mgmt->u.action.u.addba_req)))
3049 break;
f698d856 3050 ieee80211_sta_process_addba_request(local, mgmt, len);
9f985b0e 3051 break;
eadc8d9e
RR		 3052 case WLAN_ACTION_ADDBA_RESP:
3053 if (len < (IEEE80211_MIN_ACTION_SIZE +
3054 sizeof(mgmt->u.action.u.addba_resp)))
3055 break;
f698d856 3056 ieee80211_sta_process_addba_resp(local, mgmt, len);
eadc8d9e 3057 break;
688b88a4
RR		 3058 case WLAN_ACTION_DELBA:
3059 if (len < (IEEE80211_MIN_ACTION_SIZE +
3060 sizeof(mgmt->u.action.u.delba)))
3061 break;
f698d856 3062 ieee80211_sta_process_delba(sdata, mgmt, len);
688b88a4 3063 break;
9f985b0e
RR		 3064 }
3065 break;
f709fc69 3066 case PLINK_CATEGORY:
902acc78 3067 if (ieee80211_vif_is_mesh(&sdata->vif))
f698d856 3068 mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
f709fc69 3069 break;
f709fc69 3070 case MESH_PATH_SEL_CATEGORY:
902acc78 3071 if (ieee80211_vif_is_mesh(&sdata->vif))
f698d856 3072 mesh_rx_path_sel_frame(sdata, mgmt, len);
f709fc69 3073 break;
9f985b0e
RR		 3074 }
3075}
f0706e82 3076
f698d856 3077void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
f0706e82
JB		 3078 struct ieee80211_rx_status *rx_status)
3079{
f698d856 3080 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3081 struct ieee80211_if_sta *ifsta;
3082 struct ieee80211_mgmt *mgmt;
3083 u16 fc;
3084
3085 if (skb->len < 24)
3086 goto fail;
3087
f0706e82
JB		 3088 ifsta = &sdata->u.sta;
3089
3090 mgmt = (struct ieee80211_mgmt *) skb->data;
3091 fc = le16_to_cpu(mgmt->frame_control);
3092
3093 switch (fc & IEEE80211_FCTL_STYPE) {
3094 case IEEE80211_STYPE_PROBE_REQ:
3095 case IEEE80211_STYPE_PROBE_RESP:
3096 case IEEE80211_STYPE_BEACON:
f709fc69 3097 case IEEE80211_STYPE_ACTION:
f0706e82
JB		 3098 memcpy(skb->cb, rx_status, sizeof(*rx_status));
3099 case IEEE80211_STYPE_AUTH:
3100 case IEEE80211_STYPE_ASSOC_RESP:
3101 case IEEE80211_STYPE_REASSOC_RESP:
3102 case IEEE80211_STYPE_DEAUTH:
3103 case IEEE80211_STYPE_DISASSOC:
3104 skb_queue_tail(&ifsta->skb_queue, skb);
3105 queue_work(local->hw.workqueue, &ifsta->work);
3106 return;
f0706e82
JB		 3107 }
3108
3109 fail:
3110 kfree_skb(skb);
3111}
3112
3113
f698d856 3114static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3115 struct sk_buff *skb)
3116{
3117 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3118 struct ieee80211_if_sta *ifsta;
3119 struct ieee80211_mgmt *mgmt;
3120 u16 fc;
3121
f0706e82
JB		 3122 ifsta = &sdata->u.sta;
3123
3124 rx_status = (struct ieee80211_rx_status *) skb->cb;
3125 mgmt = (struct ieee80211_mgmt *) skb->data;
3126 fc = le16_to_cpu(mgmt->frame_control);
3127
3128 switch (fc & IEEE80211_FCTL_STYPE) {
3129 case IEEE80211_STYPE_PROBE_REQ:
f698d856 3130 ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len,
f0706e82
JB		 3131 rx_status);
3132 break;
3133 case IEEE80211_STYPE_PROBE_RESP:
f698d856 3134 ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status);
f0706e82
JB		 3135 break;
3136 case IEEE80211_STYPE_BEACON:
f698d856 3137 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
f0706e82
JB		 3138 break;
3139 case IEEE80211_STYPE_AUTH:
f698d856 3140 ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len);
f0706e82
JB		 3141 break;
3142 case IEEE80211_STYPE_ASSOC_RESP:
471b3efd 3143 ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0);
f0706e82
JB		 3144 break;
3145 case IEEE80211_STYPE_REASSOC_RESP:
471b3efd 3146 ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1);
f0706e82
JB		 3147 break;
3148 case IEEE80211_STYPE_DEAUTH:
f698d856 3149 ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len);
f0706e82
JB		 3150 break;
3151 case IEEE80211_STYPE_DISASSOC:
f698d856 3152 ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len);
f0706e82 3153 break;
9f985b0e 3154 case IEEE80211_STYPE_ACTION:
f698d856 3155 ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status);
9f985b0e 3156 break;
f0706e82
JB		 3157 }
3158
3159 kfree_skb(skb);
3160}
3161
3162
9ae54c84 3163ieee80211_rx_result
f698d856 3164ieee80211_sta_rx_scan(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
ece8eddd 3165 struct ieee80211_rx_status *rx_status)
f0706e82
JB		 3166{
3167 struct ieee80211_mgmt *mgmt;
4e3996fe 3168 __le16 fc;
f0706e82 3169
ece8eddd 3170 if (skb->len < 2)
e4c26add 3171 return RX_DROP_UNUSABLE;
f0706e82
JB		 3172
3173 mgmt = (struct ieee80211_mgmt *) skb->data;
4e3996fe 3174 fc = mgmt->frame_control;
f0706e82 3175
4e3996fe 3176 if (ieee80211_is_ctl(fc))
9ae54c84 3177 return RX_CONTINUE;
ece8eddd
ZY		 3178
3179 if (skb->len < 24)
e4c26add 3180 return RX_DROP_MONITOR;
ece8eddd 3181
4e3996fe 3182 if (ieee80211_is_probe_resp(fc)) {
f698d856 3183 ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status);
4e3996fe
HH		 3184 dev_kfree_skb(skb);
3185 return RX_QUEUED;
f0706e82 3186 }
4e3996fe
HH		 3187
3188 if (ieee80211_is_beacon(fc)) {
f698d856 3189 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
4e3996fe
HH		 3190 dev_kfree_skb(skb);
3191 return RX_QUEUED;
3192 }
3193
9ae54c84 3194 return RX_CONTINUE;
f0706e82
JB		 3195}
3196
3197
f698d856 3198static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
f0706e82 3199{
f698d856 3200 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3201 int active = 0;
3202 struct sta_info *sta;
3203
d0709a65
JB		 3204 rcu_read_lock();
3205
3206 list_for_each_entry_rcu(sta, &local->sta_list, list) {
3207 if (sta->sdata == sdata &&
f0706e82
JB		 3208 time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
3209 jiffies)) {
3210 active++;
3211 break;
3212 }
3213 }
d0709a65
JB		 3214
3215 rcu_read_unlock();
f0706e82
JB		 3216
3217 return active;
3218}
3219
3220
f698d856 3221static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time)
f0706e82 3222{
f698d856 3223 struct ieee80211_local *local = sdata->local;
f0706e82 3224 struct sta_info *sta, *tmp;
be8755e1 3225 LIST_HEAD(tmp_list);
0795af57 3226 DECLARE_MAC_BUF(mac);
d0709a65 3227 unsigned long flags;
f0706e82 3228
d0709a65 3229 spin_lock_irqsave(&local->sta_lock, flags);
f0706e82 3230 list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
f709fc69 3231 if (time_after(jiffies, sta->last_rx + exp_time)) {
f4ea83dd 3232#ifdef CONFIG_MAC80211_IBSS_DEBUG
0795af57 3233 printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
f698d856 3234 sdata->dev->name, print_mac(mac, sta->addr));
f4ea83dd 3235#endif
cb585bcc 3236 __sta_info_unlink(&sta);
d0709a65
JB		 3237 if (sta)
3238 list_add(&sta->list, &tmp_list);
f0706e82 3239 }
d0709a65 3240 spin_unlock_irqrestore(&local->sta_lock, flags);
be8755e1 3241
d0709a65
JB		 3242 list_for_each_entry_safe(sta, tmp, &tmp_list, list)
3243 sta_info_destroy(sta);
f0706e82
JB		 3244}
3245
3246
f698d856 3247static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3248 struct ieee80211_if_sta *ifsta)
3249{
3250 mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
3251
f698d856
JBG		 3252 ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT);
3253 if (ieee80211_sta_active_ibss(sdata))
f0706e82
JB		 3254 return;
3255
3256 printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
f698d856
JBG		 3257 "IBSS networks with same SSID (merge)\n", sdata->dev->name);
3258 ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len);
f0706e82
JB		 3259}
3260
3261
f709fc69 3262#ifdef CONFIG_MAC80211_MESH
f698d856 3263static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
f709fc69
LCC		 3264 struct ieee80211_if_sta *ifsta)
3265{
f709fc69
LCC		 3266 bool free_plinks;
3267
f698d856
JBG		 3268 ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
3269 mesh_path_expire(sdata);
f709fc69
LCC		 3270
3271 free_plinks = mesh_plink_availables(sdata);
3272 if (free_plinks != sdata->u.sta.accepting_plinks)
9d139c81 3273 ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
f709fc69
LCC		 3274
3275 mod_timer(&ifsta->timer, jiffies +
3276 IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
3277}
3278
3279
f698d856 3280void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
f709fc69
LCC		 3281{
3282 struct ieee80211_if_sta *ifsta;
f709fc69 3283 ifsta = &sdata->u.sta;
48c2fc59 3284 ifsta->state = IEEE80211_STA_MLME_MESH_UP;
f709fc69 3285 ieee80211_sta_timer((unsigned long)sdata);
56a6d13d 3286 ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
f709fc69
LCC		 3287}
3288#endif
3289
3290
f0706e82
JB		 3291void ieee80211_sta_timer(unsigned long data)
3292{
3293 struct ieee80211_sub_if_data *sdata =
3294 (struct ieee80211_sub_if_data *) data;
3295 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
f698d856 3296 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3297
3298 set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
3299 queue_work(local->hw.workqueue, &ifsta->work);
3300}
3301
f0706e82
JB		 3302void ieee80211_sta_work(struct work_struct *work)
3303{
3304 struct ieee80211_sub_if_data *sdata =
3305 container_of(work, struct ieee80211_sub_if_data, u.sta.work);
f698d856 3306 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3307 struct ieee80211_if_sta *ifsta;
3308 struct sk_buff *skb;
3309
f698d856 3310 if (!netif_running(sdata->dev))
f0706e82
JB		 3311 return;
3312
ece8eddd 3313 if (local->sta_sw_scanning || local->sta_hw_scanning)
f0706e82
JB		 3314 return;
3315
f4ea83dd
JB		 3316 if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
3317 sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
3318 sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
f0706e82 3319 return;
f0706e82
JB		 3320 ifsta = &sdata->u.sta;
3321
3322 while ((skb = skb_dequeue(&ifsta->skb_queue)))
f698d856 3323 ieee80211_sta_rx_queued_mgmt(sdata, skb);
f0706e82 3324
f709fc69 3325#ifdef CONFIG_MAC80211_MESH
902acc78
JB		 3326 if (ifsta->preq_queue_len &&
3327 time_after(jiffies,
3328 ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
f698d856 3329 mesh_path_start_discovery(sdata);
f709fc69
LCC		 3330#endif
3331
48c2fc59
TW		 3332 if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
3333 ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
f0706e82 3334 test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
a0af5f14 3335 if (ifsta->scan_ssid_len)
f698d856 3336 ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
a0af5f14 3337 else
f698d856 3338 ieee80211_sta_start_scan(sdata, NULL, 0);
f0706e82
JB		 3339 return;
3340 }
3341
3342 if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
f698d856 3343 if (ieee80211_sta_config_auth(sdata, ifsta))
f0706e82
JB		 3344 return;
3345 clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
3346 } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
3347 return;
3348
3349 switch (ifsta->state) {
48c2fc59 3350 case IEEE80211_STA_MLME_DISABLED:
f0706e82 3351 break;
48c2fc59 3352 case IEEE80211_STA_MLME_AUTHENTICATE:
f698d856 3353 ieee80211_authenticate(sdata, ifsta);
f0706e82 3354 break;
48c2fc59 3355 case IEEE80211_STA_MLME_ASSOCIATE:
f698d856 3356 ieee80211_associate(sdata, ifsta);
f0706e82 3357 break;
48c2fc59 3358 case IEEE80211_STA_MLME_ASSOCIATED:
f698d856 3359 ieee80211_associated(sdata, ifsta);
f0706e82 3360 break;
48c2fc59 3361 case IEEE80211_STA_MLME_IBSS_SEARCH:
f698d856 3362 ieee80211_sta_find_ibss(sdata, ifsta);
f0706e82 3363 break;
48c2fc59 3364 case IEEE80211_STA_MLME_IBSS_JOINED:
f698d856 3365 ieee80211_sta_merge_ibss(sdata, ifsta);
f0706e82 3366 break;
f709fc69 3367#ifdef CONFIG_MAC80211_MESH
48c2fc59 3368 case IEEE80211_STA_MLME_MESH_UP:
f698d856 3369 ieee80211_mesh_housekeeping(sdata, ifsta);
f709fc69
LCC		 3370 break;
3371#endif
f0706e82 3372 default:
f4ea83dd 3373 WARN_ON(1);
f0706e82
JB		 3374 break;
3375 }
3376
f698d856 3377 if (ieee80211_privacy_mismatch(sdata, ifsta)) {
f0706e82 3378 printk(KERN_DEBUG "%s: privacy configuration mismatch and "
f698d856 3379 "mixed-cell disabled - disassociate\n", sdata->dev->name);
f0706e82 3380
f698d856
JBG		 3381 ieee80211_send_disassoc(sdata, ifsta, WLAN_REASON_UNSPECIFIED);
3382 ieee80211_set_disassoc(sdata, ifsta, 0);
f0706e82
JB		 3383 }
3384}
3385
3386
f698d856 3387static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3388 struct ieee80211_if_sta *ifsta)
3389{
f698d856 3390 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3391
3392 if (local->ops->reset_tsf) {
3393 /* Reset own TSF to allow time synchronization work. */
3394 local->ops->reset_tsf(local_to_hw(local));
3395 }
3396
3397 ifsta->wmm_last_param_set = -1; /* allow any WMM update */
3398
3399
3400 if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
3401 ifsta->auth_alg = WLAN_AUTH_OPEN;
3402 else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
3403 ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
3404 else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
3405 ifsta->auth_alg = WLAN_AUTH_LEAP;
3406 else
3407 ifsta->auth_alg = WLAN_AUTH_OPEN;
f0706e82 3408 ifsta->auth_transaction = -1;
d6f2da5b 3409 ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
6042a3e3
RR		 3410 ifsta->assoc_scan_tries = 0;
3411 ifsta->auth_tries = 0;
3412 ifsta->assoc_tries = 0;
f698d856 3413 netif_carrier_off(sdata->dev);
f0706e82
JB		 3414}
3415
3416
f698d856 3417void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3418 struct ieee80211_if_sta *ifsta)
3419{
f698d856 3420 struct ieee80211_local *local = sdata->local;
f0706e82 3421
51fb61e7 3422 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
f0706e82
JB		 3423 return;
3424
d6f2da5b
JS		 3425 if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
3426 IEEE80211_STA_AUTO_BSSID_SEL)) &&
3427 (ifsta->flags & (IEEE80211_STA_SSID_SET |
3428 IEEE80211_STA_AUTO_SSID_SEL))) {
f0706e82
JB		 3429 set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
3430 queue_work(local->hw.workqueue, &ifsta->work);
3431 }
3432}
3433
3434static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
3435 const char *ssid, int ssid_len)
3436{
3437 int tmp, hidden_ssid;
3438
48225709
MW		 3439 if (ssid_len == ifsta->ssid_len &&
3440 !memcmp(ifsta->ssid, ssid, ssid_len))
f0706e82
JB		 3441 return 1;
3442
d6f2da5b 3443 if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
f0706e82
JB		 3444 return 0;
3445
3446 hidden_ssid = 1;
3447 tmp = ssid_len;
3448 while (tmp--) {
3449 if (ssid[tmp] != '\0') {
3450 hidden_ssid = 0;
3451 break;
3452 }
3453 }
3454
3455 if (hidden_ssid && ifsta->ssid_len == ssid_len)
3456 return 1;
3457
3458 if (ssid_len == 1 && ssid[0] == ' ')
3459 return 1;
3460
3461 return 0;
3462}
3463
f698d856 3464static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3465 struct ieee80211_if_sta *ifsta)
3466{
f698d856 3467 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3468 struct ieee80211_sta_bss *bss, *selected = NULL;
3469 int top_rssi = 0, freq;
3470
f0706e82 3471 spin_lock_bh(&local->sta_bss_lock);
8318d78a 3472 freq = local->oper_channel->center_freq;
f0706e82
JB		 3473 list_for_each_entry(bss, &local->sta_bss_list, list) {
3474 if (!(bss->capability & WLAN_CAPABILITY_ESS))
3475 continue;
3476
34a961f7
AK		 3477 if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
3478 IEEE80211_STA_AUTO_BSSID_SEL |
3479 IEEE80211_STA_AUTO_CHANNEL_SEL)) &&
3480 (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
3481 !!sdata->default_key))
f0706e82
JB		 3482 continue;
3483
d6f2da5b
JS		 3484 if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
3485 bss->freq != freq)
f0706e82
JB		 3486 continue;
3487
d6f2da5b 3488 if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
f0706e82
JB		 3489 memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
3490 continue;
3491
d6f2da5b 3492 if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
f0706e82
JB		 3493 !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
3494 continue;
3495
566bfe5a 3496 if (!selected || top_rssi < bss->signal) {
f0706e82 3497 selected = bss;
566bfe5a 3498 top_rssi = bss->signal;
f0706e82
JB		 3499 }
3500 }
3501 if (selected)
3502 atomic_inc(&selected->users);
3503 spin_unlock_bh(&local->sta_bss_lock);
3504
3505 if (selected) {
f698d856 3506 ieee80211_set_freq(sdata, selected->freq);
d6f2da5b 3507 if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
f698d856 3508 ieee80211_sta_set_ssid(sdata, selected->ssid,
f0706e82 3509 selected->ssid_len);
f698d856
JBG		 3510 ieee80211_sta_set_bssid(sdata, selected->bssid);
3511 ieee80211_sta_def_wmm_params(sdata, selected, 0);
3e122be0 3512 ieee80211_rx_bss_put(local, selected);
48c2fc59 3513 ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
f698d856 3514 ieee80211_sta_reset_auth(sdata, ifsta);
f0706e82
JB		 3515 return 0;
3516 } else {
6042a3e3
RR		 3517 if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
3518 ifsta->assoc_scan_tries++;
d6f2da5b 3519 if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
f698d856 3520 ieee80211_sta_start_scan(sdata, NULL, 0);
b9bf1e60 3521 else
f698d856 3522 ieee80211_sta_start_scan(sdata, ifsta->ssid,
b9bf1e60 3523 ifsta->ssid_len);
48c2fc59 3524 ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
f0706e82
JB		 3525 set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
3526 } else
48c2fc59 3527 ifsta->state = IEEE80211_STA_MLME_DISABLED;
f0706e82 3528 }
f0706e82
JB		 3529 return -1;
3530}
3531
f0706e82 3532
f698d856 3533static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3534 struct ieee80211_if_sta *ifsta)
3535{
f698d856 3536 struct ieee80211_local *local = sdata->local;
f0706e82 3537 struct ieee80211_sta_bss *bss;
8318d78a 3538 struct ieee80211_supported_band *sband;
f0706e82
JB		 3539 u8 bssid[ETH_ALEN], *pos;
3540 int i;
167ad6f7 3541 int ret;
0795af57 3542 DECLARE_MAC_BUF(mac);
f0706e82
JB		 3543
3544#if 0
3545 /* Easier testing, use fixed BSSID. */
3546 memset(bssid, 0xfe, ETH_ALEN);
3547#else
3548 /* Generate random, not broadcast, locally administered BSSID. Mix in
3549 * own MAC address to make sure that devices that do not have proper
3550 * random number generator get different BSSID. */
3551 get_random_bytes(bssid, ETH_ALEN);
3552 for (i = 0; i < ETH_ALEN; i++)
f698d856 3553 bssid[i] ^= sdata->dev->dev_addr[i];
f0706e82
JB		 3554 bssid[0] &= ~0x01;
3555 bssid[0] |= 0x02;
3556#endif
3557
0795af57 3558 printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
f698d856 3559 sdata->dev->name, print_mac(mac, bssid));
f0706e82 3560
f698d856 3561 bss = ieee80211_rx_bss_add(sdata, bssid,
8318d78a 3562 local->hw.conf.channel->center_freq,
cffdd30d 3563 sdata->u.sta.ssid, sdata->u.sta.ssid_len);
f0706e82
JB		 3564 if (!bss)
3565 return -ENOMEM;
3566
8318d78a
JB		 3567 bss->band = local->hw.conf.channel->band;
3568 sband = local->hw.wiphy->bands[bss->band];
f0706e82
JB		 3569
3570 if (local->hw.conf.beacon_int == 0)
dc0ae30c 3571 local->hw.conf.beacon_int = 100;
f0706e82 3572 bss->beacon_int = local->hw.conf.beacon_int;
f0706e82
JB		 3573 bss->last_update = jiffies;
3574 bss->capability = WLAN_CAPABILITY_IBSS;
988c0f72
JB		 3575
3576 if (sdata->default_key)
f0706e82 3577 bss->capability |= WLAN_CAPABILITY_PRIVACY;
988c0f72 3578 else
f0706e82 3579 sdata->drop_unencrypted = 0;
988c0f72 3580
8318d78a 3581 bss->supp_rates_len = sband->n_bitrates;
f0706e82 3582 pos = bss->supp_rates;
8318d78a
JB		 3583 for (i = 0; i < sband->n_bitrates; i++) {
3584 int rate = sband->bitrates[i].bitrate;
f0706e82
JB		 3585 *pos++ = (u8) (rate / 5);
3586 }
3587
f698d856 3588 ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
3e122be0 3589 ieee80211_rx_bss_put(local, bss);
167ad6f7 3590 return ret;
f0706e82
JB		 3591}
3592
3593
f698d856 3594static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata,
f0706e82
JB		 3595 struct ieee80211_if_sta *ifsta)
3596{
f698d856 3597 struct ieee80211_local *local = sdata->local;
f0706e82
JB		 3598 struct ieee80211_sta_bss *bss;
3599 int found = 0;
3600 u8 bssid[ETH_ALEN];
3601 int active_ibss;
0795af57
JP		 3602 DECLARE_MAC_BUF(mac);
3603 DECLARE_MAC_BUF(mac2);
f0706e82
JB		 3604
3605 if (ifsta->ssid_len == 0)
3606 return -EINVAL;
3607
f698d856 3608 active_ibss = ieee80211_sta_active_ibss(sdata);
f0706e82
JB		 3609#ifdef CONFIG_MAC80211_IBSS_DEBUG
3610 printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
f698d856 3611 sdata->dev->name, active_ibss);
f0706e82
JB		 3612#endif /* CONFIG_MAC80211_IBSS_DEBUG */
3613 spin_lock_bh(&local->sta_bss_lock);
3614 list_for_each_entry(bss, &local->sta_bss_list, list) {
3615 if (ifsta->ssid_len != bss->ssid_len ||
3616 memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
3617 || !(bss->capability & WLAN_CAPABILITY_IBSS))
3618 continue;
3619#ifdef CONFIG_MAC80211_IBSS_DEBUG
0795af57
JP		 3620 printk(KERN_DEBUG " bssid=%s found\n",
3621 print_mac(mac, bss->bssid));
f0706e82
JB		 3622#endif /* CONFIG_MAC80211_IBSS_DEBUG */
3623 memcpy(bssid, bss->bssid, ETH_ALEN);
3624 found = 1;
3625 if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
3626 break;
3627 }
3628 spin_unlock_bh(&local->sta_bss_lock);
3629
3630#ifdef CONFIG_MAC80211_IBSS_DEBUG
6e43829b
VK		 3631 if (found)
3632 printk(KERN_DEBUG " sta_find_ibss: selected %s current "
3633 "%s\n", print_mac(mac, bssid),
3634 print_mac(mac2, ifsta->bssid));
f0706e82 3635#endif /* CONFIG_MAC80211_IBSS_DEBUG */
80693ceb
DD		 3636
3637 if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
167ad6f7 3638 int ret;
80693ceb
DD		 3639 int search_freq;
3640
3641 if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL)
3642 search_freq = bss->freq;
3643 else
3644 search_freq = local->hw.conf.channel->center_freq;
3645
f698d856 3646 bss = ieee80211_rx_bss_get(local, bssid, search_freq,
80693ceb
DD		 3647 ifsta->ssid, ifsta->ssid_len);
3648 if (!bss)
3649 goto dont_join;
3650
0795af57 3651 printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
f0706e82 3652 " based on configured SSID\n",
f698d856
JBG		 3653 sdata->dev->name, print_mac(mac, bssid));
3654 ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
3e122be0 3655 ieee80211_rx_bss_put(local, bss);
167ad6f7 3656 return ret;
f0706e82 3657 }
80693ceb
DD		 3658
3659dont_join:
f0706e82
JB		 3660#ifdef CONFIG_MAC80211_IBSS_DEBUG
3661 printk(KERN_DEBUG " did not try to join ibss\n");
3662#endif /* CONFIG_MAC80211_IBSS_DEBUG */
3663
3664 /* Selected IBSS not found in current scan results - try to scan */
48c2fc59 3665 if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED &&
f698d856 3666 !ieee80211_sta_active_ibss(sdata)) {
f0706e82
JB		 3667 mod_timer(&ifsta->timer, jiffies +
3668 IEEE80211_IBSS_MERGE_INTERVAL);
3669 } else if (time_after(jiffies, local->last_scan_completed +
3670 IEEE80211_SCAN_INTERVAL)) {
3671 printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
f698d856
JBG		 3672 "join\n", sdata->dev->name);
3673 return ieee80211_sta_req_scan(sdata, ifsta->ssid,
f0706e82 3674 ifsta->ssid_len);
48c2fc59 3675 } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) {
f0706e82
JB		 3676 int interval = IEEE80211_SCAN_INTERVAL;
3677
3678 if (time_after(jiffies, ifsta->ibss_join_req +
3679 IEEE80211_IBSS_JOIN_TIMEOUT)) {
d6f2da5b 3680 if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
8318d78a
JB		 3681 (!(local->oper_channel->flags &
3682 IEEE80211_CHAN_NO_IBSS)))
f698d856 3683 return ieee80211_sta_create_ibss(sdata, ifsta);
d6f2da5b 3684 if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
8318d78a 3685 printk(KERN_DEBUG "%s: IBSS not allowed on"
f698d856 3686 " %d MHz\n", sdata->dev->name,
8318d78a 3687 local->hw.conf.channel->center_freq);
f0706e82
JB		 3688 }
3689
3690 /* No IBSS found - decrease scan interval and continue
3691 * scanning. */
3692 interval = IEEE80211_SCAN_INTERVAL_SLOW;
3693 }
3694
48c2fc59 3695 ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
f0706e82
JB		 3696 mod_timer(&ifsta->timer, jiffies + interval);
3697 return 0;
3698 }
3699
3700 return 0;
3701}
3702
3703
f698d856 3704int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
f0706e82 3705{
f0706e82 3706 struct ieee80211_if_sta *ifsta;
9d139c81 3707 int res;
f0706e82
JB		 3708
3709 if (len > IEEE80211_MAX_SSID_LEN)
3710 return -EINVAL;
3711
f0706e82
JB		 3712 ifsta = &sdata->u.sta;
3713
9d139c81
JB		 3714 if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) {
3715 memset(ifsta->ssid, 0, sizeof(ifsta->ssid));
3716 memcpy(ifsta->ssid, ssid, len);
3717 ifsta->ssid_len = len;
d6f2da5b 3718 ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
9d139c81
JB		 3719
3720 res = 0;
3721 /*
3722 * Hack! MLME code needs to be cleaned up to have different
3723 * entry points for configuration and internal selection change
3724 */
3725 if (netif_running(sdata->dev))
3726 res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
3727 if (res) {
3728 printk(KERN_DEBUG "%s: Failed to config new SSID to "
f698d856 3729 "the low-level driver\n", sdata->dev->name);
9d139c81
JB		 3730 return res;
3731 }
3732 }
f0706e82 3733
d6f2da5b
JS		 3734 if (len)
3735 ifsta->flags |= IEEE80211_STA_SSID_SET;
3736 else
3737 ifsta->flags &= ~IEEE80211_STA_SSID_SET;
9d139c81 3738
51fb61e7 3739 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
d6f2da5b 3740 !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
f0706e82 3741 ifsta->ibss_join_req = jiffies;
48c2fc59 3742 ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
f698d856 3743 return ieee80211_sta_find_ibss(sdata, ifsta);
f0706e82 3744 }
9d139c81 3745
f0706e82
JB		 3746 return 0;
3747}
3748
3749
f698d856 3750int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
f0706e82 3751{
f0706e82
JB		 3752 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
3753 memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
3754 *len = ifsta->ssid_len;
3755 return 0;
3756}
3757
3758
f698d856 3759int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
f0706e82 3760{
f0706e82
JB		 3761 struct ieee80211_if_sta *ifsta;
3762 int res;
3763
f0706e82
JB		 3764 ifsta = &sdata->u.sta;
3765
3766 if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
3767 memcpy(ifsta->bssid, bssid, ETH_ALEN);
9d139c81
JB		 3768 res = 0;
3769 /*
3770 * Hack! See also ieee80211_sta_set_ssid.
3771 */
3772 if (netif_running(sdata->dev))
3773 res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
f0706e82
JB		 3774 if (res) {
3775 printk(KERN_DEBUG "%s: Failed to config new BSSID to "
f698d856 3776 "the low-level driver\n", sdata->dev->name);
f0706e82
JB		 3777 return res;
3778 }
3779 }
3780
d6f2da5b
JS		 3781 if (is_valid_ether_addr(bssid))
3782 ifsta->flags |= IEEE80211_STA_BSSID_SET;
f0706e82 3783 else
d6f2da5b
JS		 3784 ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
3785
f0706e82
JB		 3786 return 0;
3787}
3788
3789
3790static void ieee80211_send_nullfunc(struct ieee80211_local *local,
3791 struct ieee80211_sub_if_data *sdata,
3792 int powersave)
3793{
3794 struct sk_buff *skb;
3795 struct ieee80211_hdr *nullfunc;
4e3996fe 3796 __le16 fc;
f0706e82
JB		 3797
3798 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
3799 if (!skb) {
3800 printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
3801 "frame\n", sdata->dev->name);
3802 return;
3803 }
3804 skb_reserve(skb, local->hw.extra_tx_headroom);
3805
3806 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
3807 memset(nullfunc, 0, 24);
4e3996fe
HH		 3808 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
3809 IEEE80211_FCTL_TODS);
f0706e82 3810 if (powersave)
4e3996fe
HH		 3811 fc |= cpu_to_le16(IEEE80211_FCTL_PM);
3812 nullfunc->frame_control = fc;
f0706e82
JB		 3813 memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
3814 memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
3815 memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
3816
f698d856 3817 ieee80211_sta_tx(sdata, skb, 0);
f0706e82
JB		 3818}
3819
3820
69d3b6f4
JB		 3821static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3822{
3823 if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
3824 ieee80211_vif_is_mesh(&sdata->vif))
3825 ieee80211_sta_timer((unsigned long)sdata);
3826}
3827
f0706e82
JB		 3828void ieee80211_scan_completed(struct ieee80211_hw *hw)
3829{
3830 struct ieee80211_local *local = hw_to_local(hw);
3831 struct net_device *dev = local->scan_dev;
3832 struct ieee80211_sub_if_data *sdata;
3833 union iwreq_data wrqu;
3834
3835 local->last_scan_completed = jiffies;
ece8eddd
ZY		 3836 memset(&wrqu, 0, sizeof(wrqu));
3837 wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
f0706e82 3838
ece8eddd
ZY		 3839 if (local->sta_hw_scanning) {
3840 local->sta_hw_scanning = 0;
675ef586
MA		 3841 if (ieee80211_hw_config(local))
3842 printk(KERN_DEBUG "%s: failed to restore operational "
3843 "channel after scan\n", dev->name);
69d3b6f4
JB		 3844 /* Restart STA timer for HW scan case */
3845 rcu_read_lock();
3846 list_for_each_entry_rcu(sdata, &local->interfaces, list)
3847 ieee80211_restart_sta_timer(sdata);
3848 rcu_read_unlock();
3849
ece8eddd
ZY		 3850 goto done;
3851 }
3852
3853 local->sta_sw_scanning = 0;
f0706e82 3854 if (ieee80211_hw_config(local))
4b50e388 3855 printk(KERN_DEBUG "%s: failed to restore operational "
f0706e82
JB		 3856 "channel after scan\n", dev->name);
3857
4150c572
JB		 3858
3859 netif_tx_lock_bh(local->mdev);
e308a5d8 3860 netif_addr_lock(local->mdev);
4150c572
JB		 3861 local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
3862 local->ops->configure_filter(local_to_hw(local),
3863 FIF_BCN_PRBRESP_PROMISC,
3864 &local->filter_flags,
3865 local->mdev->mc_count,
3866 local->mdev->mc_list);
3867
e308a5d8 3868 netif_addr_unlock(local->mdev);
4150c572 3869 netif_tx_unlock_bh(local->mdev);
f0706e82 3870
79010420
JB		 3871 rcu_read_lock();
3872 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
69d3b6f4
JB		 3873 /* Tell AP we're back */
3874 if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
3875 sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
3876 ieee80211_send_nullfunc(local, sdata, 0);
14042cbe 3877
69d3b6f4 3878 ieee80211_restart_sta_timer(sdata);
f709fc69 3879
f0706e82
JB		 3880 netif_wake_queue(sdata->dev);
3881 }
79010420 3882 rcu_read_unlock();
f0706e82 3883
ece8eddd 3884done:
f0706e82 3885 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
51fb61e7 3886 if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
f0706e82 3887 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
d6f2da5b 3888 if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
48c2fc59 3889 (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) &&
f698d856
JBG		 3890 !ieee80211_sta_active_ibss(sdata)))
3891 ieee80211_sta_find_ibss(sdata, ifsta);
f0706e82
JB		 3892 }
3893}
3894EXPORT_SYMBOL(ieee80211_scan_completed);
3895
3896void ieee80211_sta_scan_work(struct work_struct *work)
3897{
3898 struct ieee80211_local *local =
3899 container_of(work, struct ieee80211_local, scan_work.work);
3900 struct net_device *dev = local->scan_dev;
3901 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
8318d78a 3902 struct ieee80211_supported_band *sband;
f0706e82
JB		 3903 struct ieee80211_channel *chan;
3904 int skip;
3905 unsigned long next_delay = 0;
3906
ece8eddd 3907 if (!local->sta_sw_scanning)
f0706e82
JB		 3908 return;
3909
3910 switch (local->scan_state) {
3911 case SCAN_SET_CHANNEL:
69d464d5
JB		 3912 /*
3913 * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
3914 * after we successfully scanned the last channel of the last
3915 * band (and the last band is supported by the hw)
3916 */
8318d78a
JB		 3917 if (local->scan_band < IEEE80211_NUM_BANDS)
3918 sband = local->hw.wiphy->bands[local->scan_band];
3919 else
3920 sband = NULL;
3921
69d464d5
JB		 3922 /*
3923 * If we are at an unsupported band and have more bands
3924 * left to scan, advance to the next supported one.
3925 */
3926 while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
8318d78a
JB		 3927 local->scan_band++;
3928 sband = local->hw.wiphy->bands[local->scan_band];
3929 local->scan_channel_idx = 0;
3930 }
3931
69d464d5
JB		 3932 /* if no more bands/channels left, complete scan */
3933 if (!sband || local->scan_channel_idx >= sband->n_channels) {
f0706e82
JB		 3934 ieee80211_scan_completed(local_to_hw(local));
3935 return;
3936 }
8318d78a
JB		 3937 skip = 0;
3938 chan = &sband->channels[local->scan_channel_idx];
3939
3940 if (chan->flags & IEEE80211_CHAN_DISABLED ||
51fb61e7 3941 (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
8318d78a 3942 chan->flags & IEEE80211_CHAN_NO_IBSS))
f0706e82
JB		 3943 skip = 1;
3944
3945 if (!skip) {
f0706e82
JB		 3946 local->scan_channel = chan;
3947 if (ieee80211_hw_config(local)) {
8318d78a
JB		 3948 printk(KERN_DEBUG "%s: failed to set freq to "
3949 "%d MHz for scan\n", dev->name,
3950 chan->center_freq);
f0706e82
JB		 3951 skip = 1;
3952 }
3953 }
3954
69d464d5 3955 /* advance state machine to next channel/band */
f0706e82 3956 local->scan_channel_idx++;
8318d78a 3957 if (local->scan_channel_idx >= sband->n_channels) {
69d464d5
JB		 3958 /*
3959 * scan_band may end up == IEEE80211_NUM_BANDS, but
3960 * we'll catch that case above and complete the scan
3961 * if that is the case.
3962 */
8318d78a
JB		 3963 local->scan_band++;
3964 local->scan_channel_idx = 0;
f0706e82
JB		 3965 }
3966
3967 if (skip)
3968 break;
3969
3970 next_delay = IEEE80211_PROBE_DELAY +
3971 usecs_to_jiffies(local->hw.channel_change_time);
3972 local->scan_state = SCAN_SEND_PROBE;
3973 break;
3974 case SCAN_SEND_PROBE:
8318d78a 3975 next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
f0706e82 3976 local->scan_state = SCAN_SET_CHANNEL;
8318d78a
JB		 3977
3978 if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
3979 break;
f698d856 3980 ieee80211_send_probe_req(sdata, NULL, local->scan_ssid,
8318d78a
JB		 3981 local->scan_ssid_len);
3982 next_delay = IEEE80211_CHANNEL_TIME;
f0706e82
JB		 3983 break;
3984 }
3985
ece8eddd 3986 if (local->sta_sw_scanning)
f0706e82
JB		 3987 queue_delayed_work(local->hw.workqueue, &local->scan_work,
3988 next_delay);
3989}
3990
3991
f698d856 3992static int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
f0706e82
JB		 3993 u8 *ssid, size_t ssid_len)
3994{
f698d856 3995 struct ieee80211_local *local = scan_sdata->local;
f0706e82
JB		 3996 struct ieee80211_sub_if_data *sdata;
3997
3998 if (ssid_len > IEEE80211_MAX_SSID_LEN)
3999 return -EINVAL;
4000
4001 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
4002 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
4003 * BSSID: MACAddress
4004 * SSID
4005 * ScanType: ACTIVE, PASSIVE
4006 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
4007 * a Probe frame during active scanning
4008 * ChannelList
4009 * MinChannelTime (>= ProbeDelay), in TU
4010 * MaxChannelTime: (>= MinChannelTime), in TU
4011 */
4012
4013 /* MLME-SCAN.confirm
4014 * BSSDescriptionSet
4015 * ResultCode: SUCCESS, INVALID_PARAMETERS
4016 */
4017
ece8eddd 4018 if (local->sta_sw_scanning || local->sta_hw_scanning) {
f698d856 4019 if (local->scan_dev == scan_sdata->dev)
f0706e82
JB		 4020 return 0;
4021 return -EBUSY;
4022 }
4023
4024 if (local->ops->hw_scan) {
4025 int rc = local->ops->hw_scan(local_to_hw(local),
ece8eddd 4026 ssid, ssid_len);
f0706e82 4027 if (!rc) {
ece8eddd 4028 local->sta_hw_scanning = 1;
f698d856 4029 local->scan_dev = scan_sdata->dev;
f0706e82
JB		 4030 }
4031 return rc;
4032 }
4033
ece8eddd 4034 local->sta_sw_scanning = 1;
f0706e82 4035
79010420
JB		 4036 rcu_read_lock();
4037 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
f0706e82 4038 netif_stop_queue(sdata->dev);
51fb61e7 4039 if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
d6f2da5b 4040 (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
f0706e82
JB		 4041 ieee80211_send_nullfunc(local, sdata, 1);
4042 }
79010420 4043 rcu_read_unlock();
f0706e82
JB		 4044
4045 if (ssid) {
4046 local->scan_ssid_len = ssid_len;
4047 memcpy(local->scan_ssid, ssid, ssid_len);
4048 } else
4049 local->scan_ssid_len = 0;
4050 local->scan_state = SCAN_SET_CHANNEL;
f0706e82 4051 local->scan_channel_idx = 0;
8318d78a 4052 local->scan_band = IEEE80211_BAND_2GHZ;
f698d856 4053 local->scan_dev = scan_sdata->dev;
f0706e82 4054
b9e40857 4055 netif_addr_lock_bh(local->mdev);
4150c572
JB		 4056 local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
4057 local->ops->configure_filter(local_to_hw(local),
4058 FIF_BCN_PRBRESP_PROMISC,
4059 &local->filter_flags,
4060 local->mdev->mc_count,
4061 local->mdev->mc_list);
b9e40857 4062 netif_addr_unlock_bh(local->mdev);
f0706e82
JB		 4063
4064 /* TODO: start scan as soon as all nullfunc frames are ACKed */
4065 queue_delayed_work(local->hw.workqueue, &local->scan_work,
4066 IEEE80211_CHANNEL_TIME);
4067
4068 return 0;
4069}
4070
4071
f698d856 4072int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len)
f0706e82 4073{
f0706e82 4074 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
f698d856 4075 struct ieee80211_local *local = sdata->local;
f0706e82 4076
51fb61e7 4077 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
f698d856 4078 return ieee80211_sta_start_scan(sdata, ssid, ssid_len);
f0706e82 4079
ece8eddd 4080 if (local->sta_sw_scanning || local->sta_hw_scanning) {
f698d856 4081 if (local->scan_dev == sdata->dev)
f0706e82
JB		 4082 return 0;
4083 return -EBUSY;
4084 }
4085
a0af5f14
HS		 4086 ifsta->scan_ssid_len = ssid_len;
4087 if (ssid_len)
4088 memcpy(ifsta->scan_ssid, ssid, ssid_len);
f0706e82
JB		 4089 set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
4090 queue_work(local->hw.workqueue, &ifsta->work);
4091 return 0;
4092}
4093
4094static char *
f698d856 4095ieee80211_sta_scan_result(struct ieee80211_local *local,
ccc58057 4096 struct iw_request_info *info,
f0706e82
JB		 4097 struct ieee80211_sta_bss *bss,
4098 char *current_ev, char *end_buf)
4099{
f0706e82
JB		 4100 struct iw_event iwe;
4101
4102 if (time_after(jiffies,
4103 bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
4104 return current_ev;
4105
f0706e82
JB		 4106 memset(&iwe, 0, sizeof(iwe));
4107 iwe.cmd = SIOCGIWAP;
4108 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
4109 memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
ccc58057 4110 current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
f0706e82
JB		 4111 IW_EV_ADDR_LEN);
4112
4113 memset(&iwe, 0, sizeof(iwe));
4114 iwe.cmd = SIOCGIWESSID;
902acc78
JB		 4115 if (bss_mesh_cfg(bss)) {
4116 iwe.u.data.length = bss_mesh_id_len(bss);
f709fc69 4117 iwe.u.data.flags = 1;
ccc58057
DM		 4118 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4119 &iwe, bss_mesh_id(bss));
f709fc69
LCC		 4120 } else {
4121 iwe.u.data.length = bss->ssid_len;
4122 iwe.u.data.flags = 1;
ccc58057
DM		 4123 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4124 &iwe, bss->ssid);
f709fc69 4125 }
f0706e82 4126
1d1b5359
LCC		 4127 if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
4128 || bss_mesh_cfg(bss)) {
f0706e82
JB		 4129 memset(&iwe, 0, sizeof(iwe));
4130 iwe.cmd = SIOCGIWMODE;
902acc78 4131 if (bss_mesh_cfg(bss))
f709fc69
LCC		 4132 iwe.u.mode = IW_MODE_MESH;
4133 else if (bss->capability & WLAN_CAPABILITY_ESS)
f0706e82
JB		 4134 iwe.u.mode = IW_MODE_MASTER;
4135 else
4136 iwe.u.mode = IW_MODE_ADHOC;
ccc58057
DM		 4137 current_ev = iwe_stream_add_event(info, current_ev, end_buf,
4138 &iwe, IW_EV_UINT_LEN);
f0706e82
JB		 4139 }
4140
4141 memset(&iwe, 0, sizeof(iwe));
4142 iwe.cmd = SIOCGIWFREQ;
9381be05
TW		 4143 iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
4144 iwe.u.freq.e = 0;
ccc58057 4145 current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
f0706e82 4146 IW_EV_FREQ_LEN);
8318d78a
JB		 4147
4148 memset(&iwe, 0, sizeof(iwe));
4149 iwe.cmd = SIOCGIWFREQ;
9381be05
TW		 4150 iwe.u.freq.m = bss->freq;
4151 iwe.u.freq.e = 6;
ccc58057 4152 current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
f0706e82 4153 IW_EV_FREQ_LEN);
f0706e82
JB		 4154 memset(&iwe, 0, sizeof(iwe));
4155 iwe.cmd = IWEVQUAL;
566bfe5a
BR		 4156 iwe.u.qual.qual = bss->qual;
4157 iwe.u.qual.level = bss->signal;
f0706e82
JB		 4158 iwe.u.qual.noise = bss->noise;
4159 iwe.u.qual.updated = local->wstats_flags;
ccc58057 4160 current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
f0706e82
JB		 4161 IW_EV_QUAL_LEN);
4162
4163 memset(&iwe, 0, sizeof(iwe));
4164 iwe.cmd = SIOCGIWENCODE;
4165 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
4166 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
4167 else
4168 iwe.u.data.flags = IW_ENCODE_DISABLED;
4169 iwe.u.data.length = 0;
ccc58057
DM		 4170 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4171 &iwe, "");
f0706e82
JB		 4172
4173 if (bss && bss->wpa_ie) {
4174 memset(&iwe, 0, sizeof(iwe));
4175 iwe.cmd = IWEVGENIE;
4176 iwe.u.data.length = bss->wpa_ie_len;
ccc58057
DM		 4177 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4178 &iwe, bss->wpa_ie);
f0706e82
JB		 4179 }
4180
4181 if (bss && bss->rsn_ie) {
4182 memset(&iwe, 0, sizeof(iwe));
4183 iwe.cmd = IWEVGENIE;
4184 iwe.u.data.length = bss->rsn_ie_len;
ccc58057
DM		 4185 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4186 &iwe, bss->rsn_ie);
f0706e82
JB		 4187 }
4188
e623157b
EG		 4189 if (bss && bss->ht_ie) {
4190 memset(&iwe, 0, sizeof(iwe));
4191 iwe.cmd = IWEVGENIE;
4192 iwe.u.data.length = bss->ht_ie_len;
ccc58057
DM		 4193 current_ev = iwe_stream_add_point(info, current_ev, end_buf,
4194 &iwe, bss->ht_ie);
e623157b
EG		 4195 }
4196
f0706e82
JB		 4197 if (bss && bss->supp_rates_len > 0) {
4198 /* display all supported rates in readable format */
ccc58057 4199 char *p = current_ev + iwe_stream_lcp_len(info);
f0706e82
JB		 4200 int i;
4201
4202 memset(&iwe, 0, sizeof(iwe));
4203 iwe.cmd = SIOCGIWRATE;
4204 /* Those two flags are ignored... */
4205 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
4206
4207 for (i = 0; i < bss->supp_rates_len; i++) {
4208 iwe.u.bitrate.value = ((bss->supp_rates[i] &
4209 0x7f) * 500000);
ccc58057 4210 p = iwe_stream_add_value(info, current_ev, p,
f0706e82
JB		 4211 end_buf, &iwe, IW_EV_PARAM_LEN);
4212 }
4213 current_ev = p;
4214 }
4215
4216 if (bss) {
4217 char *buf;
4218 buf = kmalloc(30, GFP_ATOMIC);
4219 if (buf) {
4220 memset(&iwe, 0, sizeof(iwe));
4221 iwe.cmd = IWEVCUSTOM;
4222 sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
4223 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4224 current_ev = iwe_stream_add_point(info, current_ev,
4225 end_buf,
f0706e82 4226 &iwe, buf);
bf998f68
EG		 4227 memset(&iwe, 0, sizeof(iwe));
4228 iwe.cmd = IWEVCUSTOM;
4229 sprintf(buf, " Last beacon: %dms ago",
4230 jiffies_to_msecs(jiffies - bss->last_update));
4231 iwe.u.data.length = strlen(buf);
4232 current_ev = iwe_stream_add_point(info, current_ev,
4233 end_buf, &iwe, buf);
f0706e82
JB		 4234 kfree(buf);
4235 }
4236 }
4237
902acc78 4238 if (bss_mesh_cfg(bss)) {
f709fc69 4239 char *buf;
24736701 4240 u8 *cfg = bss_mesh_cfg(bss);
4f5d4c4d 4241 buf = kmalloc(50, GFP_ATOMIC);
f709fc69
LCC		 4242 if (buf) {
4243 memset(&iwe, 0, sizeof(iwe));
4244 iwe.cmd = IWEVCUSTOM;
24736701 4245 sprintf(buf, "Mesh network (version %d)", cfg[0]);
4f5d4c4d 4246 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4247 current_ev = iwe_stream_add_point(info, current_ev,
4248 end_buf,
4f5d4c4d
LCC		 4249 &iwe, buf);
4250 sprintf(buf, "Path Selection Protocol ID: "
24736701
JL		 4251 "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
4252 cfg[4]);
4f5d4c4d 4253 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4254 current_ev = iwe_stream_add_point(info, current_ev,
4255 end_buf,
4f5d4c4d
LCC		 4256 &iwe, buf);
4257 sprintf(buf, "Path Selection Metric ID: "
24736701
JL		 4258 "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
4259 cfg[8]);
4f5d4c4d 4260 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4261 current_ev = iwe_stream_add_point(info, current_ev,
4262 end_buf,
4f5d4c4d
LCC		 4263 &iwe, buf);
4264 sprintf(buf, "Congestion Control Mode ID: "
24736701
JL		 4265 "0x%02X%02X%02X%02X", cfg[9], cfg[10],
4266 cfg[11], cfg[12]);
4f5d4c4d 4267 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4268 current_ev = iwe_stream_add_point(info, current_ev,
4269 end_buf,
4f5d4c4d
LCC		 4270 &iwe, buf);
4271 sprintf(buf, "Channel Precedence: "
24736701
JL		 4272 "0x%02X%02X%02X%02X", cfg[13], cfg[14],
4273 cfg[15], cfg[16]);
f709fc69 4274 iwe.u.data.length = strlen(buf);
ccc58057
DM		 4275 current_ev = iwe_stream_add_point(info, current_ev,
4276 end_buf,
f709fc69
LCC		 4277 &iwe, buf);
4278 kfree(buf);
4279 }
4280 }
4281
f0706e82
JB		 4282 return current_ev;
4283}
4284
4285
f698d856 4286int ieee80211_sta_scan_results(struct ieee80211_local *local,
ccc58057
DM		 4287 struct iw_request_info *info,
4288 char *buf, size_t len)
f0706e82 4289{
f0706e82
JB		 4290 char *current_ev = buf;
4291 char *end_buf = buf + len;
4292 struct ieee80211_sta_bss *bss;
4293
4294 spin_lock_bh(&local->sta_bss_lock);
4295 list_for_each_entry(bss, &local->sta_bss_list, list) {
4296 if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
4297 spin_unlock_bh(&local->sta_bss_lock);
4298 return -E2BIG;
4299 }
f698d856 4300 current_ev = ieee80211_sta_scan_result(local, info, bss,
ccc58057 4301 current_ev, end_buf);
f0706e82
JB		 4302 }
4303 spin_unlock_bh(&local->sta_bss_lock);
4304 return current_ev - buf;
4305}
4306
4307
f698d856 4308int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
f0706e82 4309{
f0706e82 4310 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
988c0f72 4311
f0706e82
JB		 4312 kfree(ifsta->extra_ie);
4313 if (len == 0) {
4314 ifsta->extra_ie = NULL;
4315 ifsta->extra_ie_len = 0;
4316 return 0;
4317 }
4318 ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
4319 if (!ifsta->extra_ie) {
4320 ifsta->extra_ie_len = 0;
4321 return -ENOMEM;
4322 }
4323 memcpy(ifsta->extra_ie, ie, len);
4324 ifsta->extra_ie_len = len;
4325 return 0;
4326}
4327
4328
f698d856 4329struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
988c0f72 4330 struct sk_buff *skb, u8 *bssid,
87291c02 4331 u8 *addr, u64 supp_rates)
f0706e82 4332{
f698d856 4333 struct ieee80211_local *local = sdata->local;
f0706e82 4334 struct sta_info *sta;
0795af57 4335 DECLARE_MAC_BUF(mac);
87291c02 4336 int band = local->hw.conf.channel->band;
f0706e82
JB		 4337
4338 /* TODO: Could consider removing the least recently used entry and
4339 * allow new one to be added. */
4340 if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
4341 if (net_ratelimit()) {
4342 printk(KERN_DEBUG "%s: No room for a new IBSS STA "
f698d856 4343 "entry %s\n", sdata->dev->name, print_mac(mac, addr));
f0706e82
JB		 4344 }
4345 return NULL;
4346 }
4347
1e188637 4348 if (compare_ether_addr(bssid, sdata->u.sta.bssid))
87291c02
VK		 4349 return NULL;
4350
f4ea83dd 4351#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
0795af57 4352 printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
f698d856 4353 wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name);
f4ea83dd 4354#endif
f0706e82 4355
73651ee6
JB		 4356 sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
4357 if (!sta)
f0706e82
JB		 4358 return NULL;
4359
07346f81 4360 set_sta_flags(sta, WLAN_STA_AUTHORIZED);
238814fd 4361
87291c02
VK		 4362 if (supp_rates)
4363 sta->supp_rates[band] = supp_rates;
4364 else
4365 sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band];
f0706e82
JB		 4366
4367 rate_control_rate_init(sta, local);
4368
93e5deb1 4369 if (sta_info_insert(sta))
73651ee6 4370 return NULL;
73651ee6 4371
d0709a65 4372 return sta;
f0706e82
JB		 4373}
4374
4375
f698d856 4376int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
f0706e82 4377{
f0706e82
JB		 4378 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
4379
f4ea83dd 4380 printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
f698d856 4381 sdata->dev->name, reason);
f0706e82 4382
51fb61e7
JB		 4383 if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
4384 sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
f0706e82
JB		 4385 return -EINVAL;
4386
f698d856
JBG		 4387 ieee80211_send_deauth(sdata, ifsta, reason);
4388 ieee80211_set_disassoc(sdata, ifsta, 1);
f0706e82
JB		 4389 return 0;
4390}
4391
4392
f698d856 4393int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
f0706e82 4394{
f0706e82
JB		 4395 struct ieee80211_if_sta *ifsta = &sdata->u.sta;
4396
f4ea83dd 4397 printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
f698d856 4398 sdata->dev->name, reason);
f0706e82 4399
51fb61e7 4400 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
f0706e82
JB		 4401 return -EINVAL;
4402
d6f2da5b 4403 if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
f0706e82
JB		 4404 return -1;
4405
f698d856
JBG		 4406 ieee80211_send_disassoc(sdata, ifsta, reason);
4407 ieee80211_set_disassoc(sdata, ifsta, 0);
f0706e82
JB		 4408 return 0;
4409}
84363e6e
MA		 4410
4411void ieee80211_notify_mac(struct ieee80211_hw *hw,
4412 enum ieee80211_notification_types notif_type)
4413{
4414 struct ieee80211_local *local = hw_to_local(hw);
4415 struct ieee80211_sub_if_data *sdata;
4416
4417 switch (notif_type) {
4418 case IEEE80211_NOTIFY_RE_ASSOC:
4419 rcu_read_lock();
4420 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3e122be0
JB		 4421 if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
4422 continue;
84363e6e 4423
f698d856 4424 ieee80211_sta_req_auth(sdata, &sdata->u.sta);
84363e6e
MA		 4425 }
4426 rcu_read_unlock();
4427 break;
4428 }
4429}
4430EXPORT_SYMBOL(ieee80211_notify_mac);
kernel source for telekom puls (alcatel/mediatek)