mlme.c 72.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13
/*
 * BSS client mode implementation
 * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
 * Copyright 2004, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

14
#include <linux/delay.h>
15 16 17 18 19 20 21
#include <linux/if_ether.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <linux/random.h>
#include <linux/etherdevice.h>
22
#include <linux/rtnetlink.h>
23 24
#include <net/iw_handler.h>
#include <net/mac80211.h>
Johannes Berg's avatar
Johannes Berg committed
25

26
#include "ieee80211_i.h"
Johannes Berg's avatar
Johannes Berg committed
27 28
#include "rate.h"
#include "led.h"
29
#include "mesh.h"
30

31
#define IEEE80211_ASSOC_SCANS_MAX_TRIES 2
32 33 34 35 36
#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
#define IEEE80211_AUTH_MAX_TRIES 3
#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
#define IEEE80211_ASSOC_MAX_TRIES 3
#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
37
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
38 39 40 41
#define IEEE80211_PROBE_INTERVAL (60 * HZ)
#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
#define IEEE80211_SCAN_INTERVAL (2 * HZ)
#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
42
#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
43 44 45

#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
46
#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
47 48 49 50

#define IEEE80211_IBSS_MAX_STA_ENTRIES 128


51 52
/* utils */
static int ecw2cw(int ecw)
Johannes Berg's avatar
Johannes Berg committed
53
{
54
	return (1 << ecw) - 1;
Johannes Berg's avatar
Johannes Berg committed
55 56 57
}

static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie)
58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
{
	u8 *end, *pos;

	pos = bss->ies;
	if (pos == NULL)
		return NULL;
	end = pos + bss->ies_len;

	while (pos + 1 < end) {
		if (pos + 2 + pos[1] > end)
			break;
		if (pos[0] == ie)
			return pos;
		pos += 2 + pos[1];
	}

	return NULL;
}

77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
				      struct ieee80211_supported_band *sband,
				      u64 *rates)
{
	int i, j, count;
	*rates = 0;
	count = 0;
	for (i = 0; i < bss->supp_rates_len; i++) {
		int rate = (bss->supp_rates[i] & 0x7F) * 5;

		for (j = 0; j < sband->n_bitrates; j++)
			if (sband->bitrates[j].bitrate == rate) {
				*rates |= BIT(j);
				count++;
				break;
			}
	}

	return count;
}

Johannes Berg's avatar
Johannes Berg committed
98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
/* frame sending functions */
static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
				struct ieee80211_if_sta *ifsta,
				int transaction, u8 *extra, size_t extra_len,
				int encrypt)
{
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct ieee80211_mgmt *mgmt;

	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
			    sizeof(*mgmt) + 6 + extra_len);
	if (!skb) {
		printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
		       "frame\n", sdata->dev->name);
		return;
	}
	skb_reserve(skb, local->hw.extra_tx_headroom);

	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
	memset(mgmt, 0, 24 + 6);
	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
					  IEEE80211_STYPE_AUTH);
	if (encrypt)
		mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
	mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
	mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
	ifsta->auth_transaction = transaction + 1;
	mgmt->u.auth.status_code = cpu_to_le16(0);
	if (extra)
		memcpy(skb_put(skb, extra_len), extra, extra_len);

133
	ieee80211_tx_skb(sdata, skb, encrypt);
Johannes Berg's avatar
Johannes Berg committed
134 135
}

136 137
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
			      u8 *ssid, size_t ssid_len)
Johannes Berg's avatar
Johannes Berg committed
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192
{
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_supported_band *sband;
	struct sk_buff *skb;
	struct ieee80211_mgmt *mgmt;
	u8 *pos, *supp_rates, *esupp_rates = NULL;
	int i;

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
	if (!skb) {
		printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
		       "request\n", sdata->dev->name);
		return;
	}
	skb_reserve(skb, local->hw.extra_tx_headroom);

	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
	memset(mgmt, 0, 24);
	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
					  IEEE80211_STYPE_PROBE_REQ);
	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
	if (dst) {
		memcpy(mgmt->da, dst, ETH_ALEN);
		memcpy(mgmt->bssid, dst, ETH_ALEN);
	} else {
		memset(mgmt->da, 0xff, ETH_ALEN);
		memset(mgmt->bssid, 0xff, ETH_ALEN);
	}
	pos = skb_put(skb, 2 + ssid_len);
	*pos++ = WLAN_EID_SSID;
	*pos++ = ssid_len;
	memcpy(pos, ssid, ssid_len);

	supp_rates = skb_put(skb, 2);
	supp_rates[0] = WLAN_EID_SUPP_RATES;
	supp_rates[1] = 0;
	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];

	for (i = 0; i < sband->n_bitrates; i++) {
		struct ieee80211_rate *rate = &sband->bitrates[i];
		if (esupp_rates) {
			pos = skb_put(skb, 1);
			esupp_rates[1]++;
		} else if (supp_rates[1] == 8) {
			esupp_rates = skb_put(skb, 3);
			esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
			esupp_rates[1] = 1;
			pos = &esupp_rates[2];
		} else {
			pos = skb_put(skb, 1);
			supp_rates[1]++;
		}
		*pos = rate->bitrate / 5;
	}

193
	ieee80211_tx_skb(sdata, skb, 0);
Johannes Berg's avatar
Johannes Berg committed
194 195
}

196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
				 struct ieee80211_if_sta *ifsta)
{
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct ieee80211_mgmt *mgmt;
	u8 *pos, *ies, *ht_add_ie;
	int i, len, count, rates_len, supp_rates_len;
	u16 capab;
	struct ieee80211_sta_bss *bss;
	int wmm = 0;
	struct ieee80211_supported_band *sband;
	u64 rates = 0;

	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
			    sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
			    ifsta->ssid_len);
	if (!skb) {
		printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
		       "frame\n", sdata->dev->name);
		return;
	}
	skb_reserve(skb, local->hw.extra_tx_headroom);

	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];

	capab = ifsta->capab;

	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
			capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
			capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
	}

	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
				   local->hw.conf.channel->center_freq,
				   ifsta->ssid, ifsta->ssid_len);
	if (bss) {
		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
			capab |= WLAN_CAPABILITY_PRIVACY;
		if (bss->wmm_used)
			wmm = 1;

		/* get all rates supported by the device and the AP as
		 * some APs don't like getting a superset of their rates
		 * in the association request (e.g. D-Link DAP 1353 in
		 * b-only mode) */
		rates_len = ieee80211_compatible_rates(bss, sband, &rates);

		if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
		    (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
			capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;

		ieee80211_rx_bss_put(local, bss);
	} else {
		rates = ~0;
		rates_len = sband->n_bitrates;
	}

	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
	memset(mgmt, 0, 24);
	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);

	if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
		skb_put(skb, 10);
		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
						  IEEE80211_STYPE_REASSOC_REQ);
		mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
		mgmt->u.reassoc_req.listen_interval =
				cpu_to_le16(local->hw.conf.listen_interval);
		memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
		       ETH_ALEN);
	} else {
		skb_put(skb, 4);
		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
						  IEEE80211_STYPE_ASSOC_REQ);
		mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
		mgmt->u.reassoc_req.listen_interval =
				cpu_to_le16(local->hw.conf.listen_interval);
	}

	/* SSID */
	ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
	*pos++ = WLAN_EID_SSID;
	*pos++ = ifsta->ssid_len;
	memcpy(pos, ifsta->ssid, ifsta->ssid_len);

	/* add all rates which were marked to be used above */
	supp_rates_len = rates_len;
	if (supp_rates_len > 8)
		supp_rates_len = 8;

	len = sband->n_bitrates;
	pos = skb_put(skb, supp_rates_len + 2);
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos++ = supp_rates_len;

	count = 0;
	for (i = 0; i < sband->n_bitrates; i++) {
		if (BIT(i) & rates) {
			int rate = sband->bitrates[i].bitrate;
			*pos++ = (u8) (rate / 5);
			if (++count == 8)
				break;
		}
	}

	if (rates_len > count) {
		pos = skb_put(skb, rates_len - count + 2);
		*pos++ = WLAN_EID_EXT_SUPP_RATES;
		*pos++ = rates_len - count;

		for (i++; i < sband->n_bitrates; i++) {
			if (BIT(i) & rates) {
				int rate = sband->bitrates[i].bitrate;
				*pos++ = (u8) (rate / 5);
			}
		}
	}

	if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
		/* 1. power capabilities */
		pos = skb_put(skb, 4);
		*pos++ = WLAN_EID_PWR_CAPABILITY;
		*pos++ = 2;
		*pos++ = 0; /* min tx power */
		*pos++ = local->hw.conf.channel->max_power; /* max tx power */

		/* 2. supported channels */
		/* TODO: get this in reg domain format */
		pos = skb_put(skb, 2 * sband->n_channels + 2);
		*pos++ = WLAN_EID_SUPPORTED_CHANNELS;
		*pos++ = 2 * sband->n_channels;
		for (i = 0; i < sband->n_channels; i++) {
			*pos++ = ieee80211_frequency_to_channel(
					sband->channels[i].center_freq);
			*pos++ = 1; /* one channel in the subband*/
		}
	}

	if (ifsta->extra_ie) {
		pos = skb_put(skb, ifsta->extra_ie_len);
		memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
	}

	if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
		pos = skb_put(skb, 9);
		*pos++ = WLAN_EID_VENDOR_SPECIFIC;
		*pos++ = 7; /* len */
		*pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
		*pos++ = 0x50;
		*pos++ = 0xf2;
		*pos++ = 2; /* WME */
		*pos++ = 0; /* WME info */
		*pos++ = 1; /* WME ver */
		*pos++ = 0;
	}

	/* wmm support is a must to HT */
	if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
	    sband->ht_info.ht_supported &&
	    (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) {
		struct ieee80211_ht_addt_info *ht_add_info =
			(struct ieee80211_ht_addt_info *)ht_add_ie;
		u16 cap = sband->ht_info.cap;
		__le16 tmp;
		u32 flags = local->hw.conf.channel->flags;

		switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) {
		case IEEE80211_HT_IE_CHA_SEC_ABOVE:
			if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
				cap &= ~IEEE80211_HT_CAP_SGI_40;
			}
			break;
		case IEEE80211_HT_IE_CHA_SEC_BELOW:
			if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
				cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
				cap &= ~IEEE80211_HT_CAP_SGI_40;
			}
			break;
		}

		tmp = cpu_to_le16(cap);
		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
		*pos++ = WLAN_EID_HT_CAPABILITY;
		*pos++ = sizeof(struct ieee80211_ht_cap);
		memset(pos, 0, sizeof(struct ieee80211_ht_cap));
		memcpy(pos, &tmp, sizeof(u16));
		pos += sizeof(u16);
		/* TODO: needs a define here for << 2 */
		*pos++ = sband->ht_info.ampdu_factor |
			 (sband->ht_info.ampdu_density << 2);
		memcpy(pos, sband->ht_info.supp_mcs_set, 16);
	}

	kfree(ifsta->assocreq_ies);
	ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
	ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
	if (ifsta->assocreq_ies)
		memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);

401
	ieee80211_tx_skb(sdata, skb, 0);
402 403 404
}


405 406
static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
					   u16 stype, u16 reason)
407 408
{
	struct ieee80211_local *local = sdata->local;
409
	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
410 411 412 413 414
	struct sk_buff *skb;
	struct ieee80211_mgmt *mgmt;

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
	if (!skb) {
415 416
		printk(KERN_DEBUG "%s: failed to allocate buffer for "
		       "deauth/disassoc frame\n", sdata->dev->name);
417 418 419 420 421 422 423 424 425
		return;
	}
	skb_reserve(skb, local->hw.extra_tx_headroom);

	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
	memset(mgmt, 0, 24);
	memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
	memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
426
	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
427
	skb_put(skb, 2);
428
	/* u.deauth.reason_code == u.disassoc.reason_code */
429 430
	mgmt->u.deauth.reason_code = cpu_to_le16(reason);

431
	ieee80211_tx_skb(sdata, skb, 0);
432 433
}

Johannes Berg's avatar
Johannes Berg committed
434
/* MLME */
435
static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
436
					 struct ieee80211_sta_bss *bss)
437 438 439 440 441 442 443 444 445 446 447 448 449 450 451
{
	struct ieee80211_local *local = sdata->local;
	int i, have_higher_than_11mbit = 0;

	/* cf. IEEE 802.11 9.2.12 */
	for (i = 0; i < bss->supp_rates_len; i++)
		if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
			have_higher_than_11mbit = 1;

	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
	    have_higher_than_11mbit)
		sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
	else
		sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;

452
	ieee80211_set_wmm_default(sdata);
453 454
}

455
static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
456 457 458 459 460 461 462 463
				     struct ieee80211_if_sta *ifsta,
				     u8 *wmm_param, size_t wmm_param_len)
{
	struct ieee80211_tx_queue_params params;
	size_t left;
	int count;
	u8 *pos;

464 465 466 467 468 469
	if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED))
		return;

	if (!wmm_param)
		return;

470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492
	if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
		return;
	count = wmm_param[6] & 0x0f;
	if (count == ifsta->wmm_last_param_set)
		return;
	ifsta->wmm_last_param_set = count;

	pos = wmm_param + 8;
	left = wmm_param_len - 8;

	memset(&params, 0, sizeof(params));

	if (!local->ops->conf_tx)
		return;

	local->wmm_acm = 0;
	for (; left >= 4; left -= 4, pos += 4) {
		int aci = (pos[0] >> 5) & 0x03;
		int acm = (pos[0] >> 4) & 0x01;
		int queue;

		switch (aci) {
		case 1:
Johannes Berg's avatar
Johannes Berg committed
493
			queue = 3;
Johannes Berg's avatar
Johannes Berg committed
494
			if (acm)
495 496 497
				local->wmm_acm |= BIT(0) | BIT(3);
			break;
		case 2:
Johannes Berg's avatar
Johannes Berg committed
498
			queue = 1;
Johannes Berg's avatar
Johannes Berg committed
499
			if (acm)
500 501 502
				local->wmm_acm |= BIT(4) | BIT(5);
			break;
		case 3:
Johannes Berg's avatar
Johannes Berg committed
503
			queue = 0;
Johannes Berg's avatar
Johannes Berg committed
504
			if (acm)
505 506 507 508
				local->wmm_acm |= BIT(6) | BIT(7);
			break;
		case 0:
		default:
Johannes Berg's avatar
Johannes Berg committed
509
			queue = 2;
Johannes Berg's avatar
Johannes Berg committed
510
			if (acm)
511 512 513 514 515 516 517
				local->wmm_acm |= BIT(1) | BIT(2);
			break;
		}

		params.aifs = pos[0] & 0x0f;
		params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
		params.cw_min = ecw2cw(pos[1] & 0x0f);
518
		params.txop = get_unaligned_le16(pos + 2);
519
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
520
		printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
521
		       "cWmin=%d cWmax=%d txop=%d\n",
522
		       local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
523 524
		       params.cw_max, params.txop);
#endif
525 526 527 528
		/* TODO: handle ACM (block TX, fallback to next lowest allowed
		 * AC for now) */
		if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
			printk(KERN_DEBUG "%s: failed to set TX queue "
529
			       "parameters for queue %d\n", local->mdev->name, queue);
530 531 532 533
		}
	}
}

534 535 536
static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
					   bool use_protection,
					   bool use_short_preamble)
537
{
538
	struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
539
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
540
	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
541
	DECLARE_MAC_BUF(mac);
542
#endif
543
	u32 changed = 0;
544

545
	if (use_protection != bss_conf->use_cts_prot) {
546
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
547 548
		if (net_ratelimit()) {
			printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
549
			       "%s)\n",
550
			       sdata->dev->name,
551
			       use_protection ? "enabled" : "disabled",
552
			       print_mac(mac, ifsta->bssid));
553
		}
554
#endif
555 556
		bss_conf->use_cts_prot = use_protection;
		changed |= BSS_CHANGED_ERP_CTS_PROT;
557
	}
558

559
	if (use_short_preamble != bss_conf->use_short_preamble) {
560
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
561 562
		if (net_ratelimit()) {
			printk(KERN_DEBUG "%s: switched to %s barker preamble"
563
			       " (BSSID=%s)\n",
564
			       sdata->dev->name,
565
			       use_short_preamble ? "short" : "long",
566
			       print_mac(mac, ifsta->bssid));
567
		}
568
#endif
569
		bss_conf->use_short_preamble = use_short_preamble;
570
		changed |= BSS_CHANGED_ERP_PREAMBLE;
571
	}
572

573
	return changed;
574 575
}

576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601
static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
				   u8 erp_value)
{
	bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
	bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;

	return ieee80211_handle_protect_preamb(sdata,
			use_protection, use_short_preamble);
}

static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
					   struct ieee80211_sta_bss *bss)
{
	u32 changed = 0;

	if (bss->has_erp_value)
		changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value);
	else {
		u16 capab = bss->capability;
		changed |= ieee80211_handle_protect_preamb(sdata, false,
				(capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
	}

	return changed;
}

602 603 604 605 606 607 608 609 610 611 612
static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata,
					struct ieee80211_if_sta *ifsta)
{
	union iwreq_data wrqu;
	memset(&wrqu, 0, sizeof(wrqu));
	if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
		memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
	wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
}

613
static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata,
614 615 616 617 618
					 struct ieee80211_if_sta *ifsta)
{
	union iwreq_data wrqu;

	if (ifsta->assocreq_ies) {
619 620
		memset(&wrqu, 0, sizeof(wrqu));
		wrqu.data.length = ifsta->assocreq_ies_len;
621
		wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu,
622
				    ifsta->assocreq_ies);
623
	}
624 625 626
	if (ifsta->assocresp_ies) {
		memset(&wrqu, 0, sizeof(wrqu));
		wrqu.data.length = ifsta->assocresp_ies_len;
627
		wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu,
628
				    ifsta->assocresp_ies);
629 630 631 632
	}
}


633
static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
634
				     struct ieee80211_if_sta *ifsta)
635
{
636
	struct ieee80211_local *local = sdata->local;
Tomas Winkler's avatar
Tomas Winkler committed
637
	struct ieee80211_conf *conf = &local_to_hw(local)->conf;
638
	u32 changed = BSS_CHANGED_ASSOC;
639

640
	struct ieee80211_sta_bss *bss;
641

642
	ifsta->flags |= IEEE80211_STA_ASSOCIATED;
643

644 645
	if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
		return;
646

647 648 649 650 651 652 653 654
	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
				   conf->channel->center_freq,
				   ifsta->ssid, ifsta->ssid_len);
	if (bss) {
		/* set timing information */
		sdata->bss_conf.beacon_int = bss->beacon_int;
		sdata->bss_conf.timestamp = bss->timestamp;
		sdata->bss_conf.dtim_period = bss->dtim_period;
655

656
		changed |= ieee80211_handle_bss_capability(sdata, bss);
657 658

		ieee80211_rx_bss_put(local, bss);
659 660
	}

661 662 663 664 665
	if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
		changed |= BSS_CHANGED_HT;
		sdata->bss_conf.assoc_ht = 1;
		sdata->bss_conf.ht_conf = &conf->ht_conf;
		sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
666
	}
667

668 669 670
	ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
	memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
	ieee80211_sta_send_associnfo(sdata, ifsta);
671

672 673
	ifsta->last_probe = jiffies;
	ieee80211_led_assoc(local, 1);
674

675 676
	sdata->bss_conf.assoc = 1;
	ieee80211_bss_info_change_notify(sdata, changed);
677

678 679
	netif_tx_start_all_queues(sdata->dev);
	netif_carrier_on(sdata->dev);
680

681
	ieee80211_sta_send_apinfo(sdata, ifsta);
682 683
}

684 685
static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata,
				   struct ieee80211_if_sta *ifsta)
686
{
687
	DECLARE_MAC_BUF(mac);
688

689 690 691 692 693
	ifsta->direct_probe_tries++;
	if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) {
		printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n",
		       sdata->dev->name, print_mac(mac, ifsta->bssid));
		ifsta->state = IEEE80211_STA_MLME_DISABLED;
694 695 696
		return;
	}

697 698 699
	printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n",
			sdata->dev->name, print_mac(mac, ifsta->bssid),
			ifsta->direct_probe_tries);
700

701
	ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
702

703 704 705 706 707 708 709 710 711
	set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request);

	/* Direct probe is sent to broadcast address as some APs
	 * will not answer to direct packet in unassociated state.
	 */
	ieee80211_send_probe_req(sdata, NULL,
				 ifsta->ssid, ifsta->ssid_len);

	mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
Johannes Berg's avatar
Johannes Berg committed
712
}
713

714 715 716

static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata,
				   struct ieee80211_if_sta *ifsta)
717
{
718
	DECLARE_MAC_BUF(mac);
719

720 721 722 723 724 725
	ifsta->auth_tries++;
	if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
		printk(KERN_DEBUG "%s: authentication with AP %s"
		       " timed out\n",
		       sdata->dev->name, print_mac(mac, ifsta->bssid));
		ifsta->state = IEEE80211_STA_MLME_DISABLED;
726 727 728
		return;
	}

729 730 731
	ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
	printk(KERN_DEBUG "%s: authenticate with AP %s\n",
	       sdata->dev->name, print_mac(mac, ifsta->bssid));
732

733 734 735
	ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0);

	mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
736 737
}

738 739 740 741 742 743
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
				   struct ieee80211_if_sta *ifsta, bool deauth,
				   bool self_disconnected, u16 reason)
{
	struct ieee80211_local *local = sdata->local;
	struct sta_info *sta;
744
	u32 changed = BSS_CHANGED_ASSOC;
745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760

	rcu_read_lock();

	sta = sta_info_get(local, ifsta->bssid);
	if (!sta) {
		rcu_read_unlock();
		return;
	}

	if (deauth) {
		ifsta->direct_probe_tries = 0;
		ifsta->auth_tries = 0;
	}
	ifsta->assoc_scan_tries = 0;
	ifsta->assoc_tries = 0;

761
	netif_tx_stop_all_queues(sdata->dev);
762 763 764 765 766 767
	netif_carrier_off(sdata->dev);

	ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr);

	if (self_disconnected) {
		if (deauth)
768 769
			ieee80211_send_deauth_disassoc(sdata,
				IEEE80211_STYPE_DEAUTH, reason);
770
		else
771 772
			ieee80211_send_deauth_disassoc(sdata,
				IEEE80211_STYPE_DISASSOC, reason);
773 774
	}

775 776 777 778 779 780 781 782 783 784 785 786 787 788
	ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
	changed |= ieee80211_reset_erp_info(sdata);

	if (sdata->bss_conf.assoc_ht)
		changed |= BSS_CHANGED_HT;

	sdata->bss_conf.assoc_ht = 0;
	sdata->bss_conf.ht_conf = NULL;
	sdata->bss_conf.ht_bss_conf = NULL;

	ieee80211_led_assoc(local, 0);
	sdata->bss_conf.assoc = 0;

	ieee80211_sta_send_apinfo(sdata, ifsta);
789 790 791 792 793 794 795 796 797 798

	if (self_disconnected)
		ifsta->state = IEEE80211_STA_MLME_DISABLED;

	sta_info_unlink(&sta);

	rcu_read_unlock();

	sta_info_destroy(sta);
}
799

800 801 802 803 804 805 806 807
static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
{
	if (!sdata || !sdata->default_key ||
	    sdata->default_key->conf.alg != ALG_WEP)
		return 0;
	return 1;
}

808
static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata,
809 810
				      struct ieee80211_if_sta *ifsta)
{
811
	struct ieee80211_local *local = sdata->local;
812
	struct ieee80211_sta_bss *bss;
813 814 815
	int bss_privacy;
	int wep_privacy;
	int privacy_invoked;
816

817
	if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
818 819
		return 0;

820
	bss = ieee80211_rx_bss_get(local, ifsta->bssid,
821
				   local->hw.conf.channel->center_freq,
822
				   ifsta->ssid, ifsta->ssid_len);
823 824 825
	if (!bss)
		return 0;

826
	bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
827
	wep_privacy = !!ieee80211_sta_wep_configured(sdata);
828
	privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
829

830
	ieee80211_rx_bss_put(local, bss);
831

832 833 834 835
	if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
		return 0;

	return 1;
836 837
}

838
static void ieee80211_associate(struct ieee80211_sub_if_data *sdata,
839 840
				struct ieee80211_if_sta *ifsta)
{
841 842
	DECLARE_MAC_BUF(mac);

843 844
	ifsta->assoc_tries++;
	if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
845
		printk(KERN_DEBUG "%s: association with AP %s"
846
		       " timed out\n",
847
		       sdata->dev->name, print_mac(mac, ifsta->bssid));
848
		ifsta->state = IEEE80211_STA_MLME_DISABLED;
849 850 851
		return;
	}

852
	ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
853
	printk(KERN_DEBUG "%s: associate with AP %s\n",
854 855
	       sdata->dev->name, print_mac(mac, ifsta->bssid));
	if (ieee80211_privacy_mismatch(sdata, ifsta)) {
856
		printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
857
		       "mixed-cell disabled - abort association\n", sdata->dev->name);
858
		ifsta->state = IEEE80211_STA_MLME_DISABLED;
859 860 861
		return;
	}

862
	ieee80211_send_assoc(sdata, ifsta);
863 864 865 866 867

	mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
}


868
static void ieee80211_associated(struct ieee80211_sub_if_data *sdata,
869 870
				 struct ieee80211_if_sta *ifsta)
{
871
	struct ieee80211_local *local = sdata->local;
872 873
	struct sta_info *sta;
	int disassoc;
874
	DECLARE_MAC_BUF(mac);
875 876 877 878 879 880

	/* TODO: start monitoring current AP signal quality and number of
	 * missed beacons. Scan other channels every now and then and search
	 * for better APs. */
	/* TODO: remove expired BSSes */

881
	ifsta->state = IEEE80211_STA_MLME_ASSOCIATED;
882

883 884
	rcu_read_lock();

885 886
	sta = sta_info_get(local, ifsta->bssid);
	if (!sta) {
887
		printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
888
		       sdata->dev->name, print_mac(mac, ifsta->bssid));
889 890 891 892 893
		disassoc = 1;
	} else {
		disassoc = 0;
		if (time_after(jiffies,
			       sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
894
			if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
895
				printk(KERN_DEBUG "%s: No ProbeResp from "
896
				       "current AP %s - assume out of "
897
				       "range\n",
898
				       sdata->dev->name, print_mac(mac, ifsta->bssid));
899
				disassoc = 1;
900
			} else
901
				ieee80211_send_probe_req(sdata, ifsta->bssid,
902 903
							 local->scan_ssid,
							 local->scan_ssid_len);
904
			ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
905
		} else {
906
			ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
907 908 909
			if (time_after(jiffies, ifsta->last_probe +
				       IEEE80211_PROBE_INTERVAL)) {
				ifsta->last_probe = jiffies;
910
				ieee80211_send_probe_req(sdata, ifsta->bssid,
911 912 913 914 915
							 ifsta->ssid,
							 ifsta->ssid_len);
			}
		}
	}
916 917 918

	rcu_read_unlock();

Johannes Berg's avatar
Johannes Berg committed
919 920 921 922 923 924
	if (disassoc)
		ieee80211_set_disassoc(sdata, ifsta, true, true,
					WLAN_REASON_PREV_AUTH_NOT_VALID);
	else
		mod_timer(&ifsta->timer, jiffies +
				      IEEE80211_MONITORING_INTERVAL);
925 926 927
}


928
static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata,
929 930
				     struct ieee80211_if_sta *ifsta)
{
931
	printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name);
932
	ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
933
	ieee80211_associate(sdata, ifsta);
934 935 936
}


937
static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
938 939 940 941 942 943 944 945
				     struct ieee80211_if_sta *ifsta,
				     struct ieee80211_mgmt *mgmt,
				     size_t len)
{
	u8 *pos;
	struct ieee802_11_elems elems;

	pos = mgmt->u.auth.variable;
946
	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
947
	if (!elems.challenge)
948
		return;
949
	ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2,
950 951 952
			    elems.challenge_len + 2, 1);
}

953
static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
954 955 956 957 958
				   struct ieee80211_if_sta *ifsta,
				   struct ieee80211_mgmt *mgmt,
				   size_t len)
{
	u16 auth_alg, auth_transaction, status_code;
959
	DECLARE_MAC_BUF(mac);
960

961
	if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
962
	    sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
963 964
		return;

965
	if (len < 24 + 6)
966 967
		return;

968
	if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
969
	    memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
970 971
		return;

972
	if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
973
	    memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
974 975 976 977 978 979
		return;

	auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
	auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
	status_code = le16_to_cpu(mgmt->u.auth.status_code);

980
	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
981 982
		/*
		 * IEEE 802.11 standard does not require authentication in IBSS
983 984 985
		 * networks and most implementations do not seem to use it.
		 * However, try to reply to authentication attempts if someone
		 * has actually implemented this.
986
		 */
987
		if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
988
			return;
989
		ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0);
990 991 992
	}

	if (auth_alg != ifsta->auth_alg ||
993
	    auth_transaction != ifsta->auth_transaction)
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
		return;

	if (status_code != WLAN_STATUS_SUCCESS) {
		if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
			u8 algs[3];
			const int num_algs = ARRAY_SIZE(algs);
			int i, pos;
			algs[0] = algs[1] = algs[2] = 0xff;
			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
				algs[0] = WLAN_AUTH_OPEN;
			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
				algs[1] = WLAN_AUTH_SHARED_KEY;
			if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
				algs[2] = WLAN_AUTH_LEAP;
			if (ifsta->auth_alg == WLAN_AUTH_OPEN)
				pos = 0;
			else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
				pos = 1;
			else
				pos = 2;
			for (i = 0; i < num_algs; i++) {
				pos++;
				if (pos >= num_algs)
					pos = 0;
				if (algs[pos] == ifsta->auth_alg ||
				    algs[pos] == 0xff)
					continue;
				if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
1022
				    !ieee80211_sta_wep_configured(sdata))
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
					continue;
				ifsta->auth_alg = algs[pos];
				break;
			}
		}
		return;
	}

	switch (ifsta->auth_alg) {
	case WLAN_AUTH_OPEN:
	case WLAN_AUTH_LEAP:
1034
		ieee80211_auth_completed(sdata, ifsta);
1035 1036 1037
		break;
	case WLAN_AUTH_SHARED_KEY:
		if (ifsta->auth_transaction == 4)
1038
			ieee80211_auth_completed(sdata, ifsta);
1039
		else
1040
			ieee80211_auth_challenge(sdata, ifsta, mgmt, len);
1041 1042 1043 1044 1045
		break;
	}
}


1046
static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
1047 1048 1049 1050 1051
				     struct ieee80211_if_sta *ifsta,
				     struct ieee80211_mgmt *mgmt,
				     size_t len)
{
	u16 reason_code;
1052
	DECLARE_MAC_BUF(mac);
1053

1054
	if (len < 24 + 2)
1055 1056
		return;

1057
	if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
1058 1059 1060 1061
		return;

	reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);

Johannes Berg's avatar
Johannes Berg committed
1062
	if (ifsta->flags & IEEE80211_STA_AUTHENTICATED)
1063
		printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name);
1064

1065 1066 1067
	if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE ||
	    ifsta->state == IEEE80211_STA_MLME_ASSOCIATE ||
	    ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
1068
		ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
1069 1070 1071 1072
		mod_timer(&ifsta->timer, jiffies +
				      IEEE80211_RETRY_AUTH_INTERVAL);
	}

1073
	ieee80211_set_disassoc(sdata, ifsta, true, false, 0);
1074
	ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
1075 1076 1077
}


1078
static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
1079 1080 1081 1082 1083
				       struct ieee80211_if_sta *ifsta,
				       struct ieee80211_mgmt *mgmt,
				       size_t len)
{
	u16 reason_code;
1084
	DECLARE_MAC_BUF(mac);
1085

1086
	if (len < 24 + 2)
1087 1088
		return;

1089
	if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
1090 1091 1092 1093
		return;

	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);

1094
	if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
1095
		printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name);
1096

1097 1098
	if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
		ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
1099 1100 1101 1102
		mod_timer(&ifsta->timer, jiffies +
				      IEEE80211_RETRY_AUTH_INTERVAL);
	}

1103
	ieee80211_set_disassoc(sdata, ifsta, false, false, 0);
1104 1105 1106
}


1107
static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
1108 1109 1110 1111 1112
					 struct ieee80211_if_sta *ifsta,
					 struct ieee80211_mgmt *mgmt,
					 size_t len,
					 int reassoc)
{
1113
	struct ieee80211_local *local = sdata->local;
1114
	struct ieee80211_supported_band *sband;
1115
	struct sta_info *sta;
1116
	u64 rates, basic_rates;
1117 1118
	u16 capab_info, status_code, aid;
	struct ieee802_11_elems elems;
1119
	struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
1120 1121
	u8 *pos;
	int i, j;
1122
	DECLARE_MAC_BUF(mac);