cfg.c 45.8 KB
Newer Older
1
2
3
/*
 * mac80211 configuration hooks for cfg80211
 *
4
 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
5
6
7
8
 *
 * This file is GPLv2 as found in COPYING.
 */

9
#include <linux/ieee80211.h>
10
11
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
12
#include <linux/slab.h>
13
#include <net/net_namespace.h>
14
#include <linux/rcupdate.h>
15
16
#include <net/cfg80211.h>
#include "ieee80211_i.h"
17
#include "driver-ops.h"
18
#include "cfg.h"
Johannes Berg's avatar
Johannes Berg committed
19
#include "rate.h"
20
21
#include "mesh.h"

22
23
24
25
static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
					      enum nl80211_iftype type,
					      u32 *flags,
					      struct vif_params *params)
26
27
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
28
29
30
	struct net_device *dev;
	struct ieee80211_sub_if_data *sdata;
	int err;
31

32
	err = ieee80211_if_add(local, name, &dev, type, params);
33
34
	if (err)
		return ERR_PTR(err);
35

36
37
38
39
40
41
	if (type == NL80211_IFTYPE_MONITOR && flags) {
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
		sdata->u.mntr_flags = *flags;
	}

	return dev;
42
43
}

44
static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
45
{
46
	ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
47

48
	return 0;
49
50
}

51
52
static int ieee80211_change_iface(struct wiphy *wiphy,
				  struct net_device *dev,
53
54
				  enum nl80211_iftype type, u32 *flags,
				  struct vif_params *params)
55
{
56
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
57
	int ret;
58

59
	ret = ieee80211_if_change_type(sdata, type);
60
61
	if (ret)
		return ret;
62

63
64
65
66
67
68
69
	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
		rcu_assign_pointer(sdata->u.vlan.sta, NULL);
	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
		struct ieee80211_local *local = sdata->local;

		if (ieee80211_sdata_running(sdata)) {
			/*
			 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
			 * changed while the interface is up.
			 * Else we would need to add a lot of cruft
			 * to update everything:
			 *	cooked_mntrs, monitor and all fif_* counters
			 *	reconfigure hardware
			 */
			if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
			    (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
				return -EBUSY;

			ieee80211_adjust_monitor_flags(sdata, -1);
			sdata->u.mntr_flags = *flags;
			ieee80211_adjust_monitor_flags(sdata, 1);

			ieee80211_configure_filter(local);
		} else {
			/*
			 * Because the interface is down, ieee80211_do_stop
			 * and ieee80211_do_open take care of "everything"
			 * mentioned in the comment above.
			 */
			sdata->u.mntr_flags = *flags;
		}
	}
100

101
102
103
	return 0;
}

104
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
105
			     u8 key_idx, bool pairwise, const u8 *mac_addr,
106
107
			     struct key_params *params)
{
108
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
109
	struct sta_info *sta = NULL;
110
	struct ieee80211_key *key;
111
	int err;
112

113
	if (!ieee80211_sdata_running(sdata))
Johannes Berg's avatar
Johannes Berg committed
114
115
		return -ENETDOWN;

116
	/* reject WEP and TKIP keys if WEP failed to initialize */
117
118
119
	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_TKIP:
120
121
122
	case WLAN_CIPHER_SUITE_WEP104:
		if (IS_ERR(sdata->local->wep_tx_tfm))
			return -EINVAL;
123
		break;
124
	default:
125
		break;
126
127
	}

128
129
	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
				  params->key, params->seq_len, params->seq);
130
131
	if (IS_ERR(key))
		return PTR_ERR(key);
132

133
134
135
	if (pairwise)
		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;

Johannes Berg's avatar
Johannes Berg committed
136
	mutex_lock(&sdata->local->sta_mtx);
137

138
	if (mac_addr) {
139
		sta = sta_info_get_bss(sdata, mac_addr);
140
		if (!sta) {
141
			ieee80211_key_free(sdata->local, key);
142
143
			err = -ENOENT;
			goto out_unlock;
144
		}
145
146
	}

147
148
149
	err = ieee80211_key_link(key, sdata, sta);
	if (err)
		ieee80211_key_free(sdata->local, key);
150

151
 out_unlock:
Johannes Berg's avatar
Johannes Berg committed
152
	mutex_unlock(&sdata->local->sta_mtx);
153
154

	return err;
155
156
157
}

static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
158
			     u8 key_idx, bool pairwise, const u8 *mac_addr)
159
160
161
162
163
164
165
{
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	int ret;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

Johannes Berg's avatar
Johannes Berg committed
166
	mutex_lock(&sdata->local->sta_mtx);
167

168
	if (mac_addr) {
169
170
		ret = -ENOENT;

171
		sta = sta_info_get_bss(sdata, mac_addr);
172
		if (!sta)
173
			goto out_unlock;
174

175
176
177
178
179
180
181
182
183
184
185
		if (pairwise) {
			if (sta->ptk) {
				ieee80211_key_free(sdata->local, sta->ptk);
				ret = 0;
			}
		} else {
			if (sta->gtk[key_idx]) {
				ieee80211_key_free(sdata->local,
						   sta->gtk[key_idx]);
				ret = 0;
			}
186
		}
187

188
		goto out_unlock;
189
190
	}

191
192
193
194
	if (!sdata->keys[key_idx]) {
		ret = -ENOENT;
		goto out_unlock;
	}
195

196
	ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
197
	WARN_ON(sdata->keys[key_idx]);
198

199
200
	ret = 0;
 out_unlock:
Johannes Berg's avatar
Johannes Berg committed
201
	mutex_unlock(&sdata->local->sta_mtx);
202
203

	return ret;
204
205
}

206
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
207
208
			     u8 key_idx, bool pairwise, const u8 *mac_addr,
			     void *cookie,
209
210
211
			     void (*callback)(void *cookie,
					      struct key_params *params))
{
212
	struct ieee80211_sub_if_data *sdata;
213
214
215
	struct sta_info *sta = NULL;
	u8 seq[6] = {0};
	struct key_params params;
216
	struct ieee80211_key *key = NULL;
217
218
219
220
	u32 iv32;
	u16 iv16;
	int err = -ENOENT;

221
222
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

223
224
	rcu_read_lock();

225
	if (mac_addr) {
226
		sta = sta_info_get_bss(sdata, mac_addr);
227
228
229
		if (!sta)
			goto out;

230
231
232
233
		if (pairwise)
			key = sta->ptk;
		else if (key_idx < NUM_DEFAULT_KEYS)
			key = sta->gtk[key_idx];
234
235
236
237
238
239
240
241
	} else
		key = sdata->keys[key_idx];

	if (!key)
		goto out;

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

242
	params.cipher = key->conf.cipher;
243

244
245
	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
246
247
		iv32 = key->u.tkip.tx.iv32;
		iv16 = key->u.tkip.tx.iv16;
248

249
250
251
252
		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
			drv_get_tkip_seq(sdata->local,
					 key->conf.hw_key_idx,
					 &iv32, &iv16);
253
254
255
256
257
258
259
260
261
262

		seq[0] = iv16 & 0xff;
		seq[1] = (iv16 >> 8) & 0xff;
		seq[2] = iv32 & 0xff;
		seq[3] = (iv32 >> 8) & 0xff;
		seq[4] = (iv32 >> 16) & 0xff;
		seq[5] = (iv32 >> 24) & 0xff;
		params.seq = seq;
		params.seq_len = 6;
		break;
263
	case WLAN_CIPHER_SUITE_CCMP:
264
265
266
267
268
269
270
271
272
		seq[0] = key->u.ccmp.tx_pn[5];
		seq[1] = key->u.ccmp.tx_pn[4];
		seq[2] = key->u.ccmp.tx_pn[3];
		seq[3] = key->u.ccmp.tx_pn[2];
		seq[4] = key->u.ccmp.tx_pn[1];
		seq[5] = key->u.ccmp.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
273
	case WLAN_CIPHER_SUITE_AES_CMAC:
274
275
276
277
278
279
280
281
282
		seq[0] = key->u.aes_cmac.tx_pn[5];
		seq[1] = key->u.aes_cmac.tx_pn[4];
		seq[2] = key->u.aes_cmac.tx_pn[3];
		seq[3] = key->u.aes_cmac.tx_pn[2];
		seq[4] = key->u.aes_cmac.tx_pn[1];
		seq[5] = key->u.aes_cmac.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
283
284
285
286
287
288
289
290
291
	}

	params.key = key->conf.key;
	params.key_len = key->conf.keylen;

	callback(cookie, &params);
	err = 0;

 out:
292
	rcu_read_unlock();
293
294
295
	return err;
}

296
297
static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
298
299
					u8 key_idx, bool uni,
					bool multi)
300
{
Johannes Berg's avatar
Johannes Berg committed
301
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
302

303
304
305
306
307
	ieee80211_set_default_key(sdata, key_idx);

	return 0;
}

308
309
310
311
static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
					     struct net_device *dev,
					     u8 key_idx)
{
312
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
313
314
315
316
317
318

	ieee80211_set_default_mgmt_key(sdata, key_idx);

	return 0;
}

319
320
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
321
	struct ieee80211_sub_if_data *sdata = sta->sdata;
322

323
324
	sinfo->generation = sdata->local->sta_generation;

325
326
	sinfo->filled = STATION_INFO_INACTIVE_TIME |
			STATION_INFO_RX_BYTES |
327
			STATION_INFO_TX_BYTES |
328
329
			STATION_INFO_RX_PACKETS |
			STATION_INFO_TX_PACKETS |
330
331
			STATION_INFO_TX_RETRIES |
			STATION_INFO_TX_FAILED |
332
333
			STATION_INFO_TX_BITRATE |
			STATION_INFO_RX_DROP_MISC;
334
335
336
337

	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
	sinfo->rx_bytes = sta->rx_bytes;
	sinfo->tx_bytes = sta->tx_bytes;
338
339
	sinfo->rx_packets = sta->rx_packets;
	sinfo->tx_packets = sta->tx_packets;
340
341
	sinfo->tx_retries = sta->tx_retry_count;
	sinfo->tx_failed = sta->tx_retry_failed;
342
	sinfo->rx_dropped_misc = sta->rx_dropped;
343

344
345
	if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
	    (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
346
		sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
347
		sinfo->signal = (s8)sta->last_signal;
348
		sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
	}

	sinfo->txrate.flags = 0;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;

	if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
		struct ieee80211_supported_band *sband;
		sband = sta->local->hw.wiphy->bands[
				sta->local->hw.conf.channel->band];
		sinfo->txrate.legacy =
			sband->bitrates[sta->last_tx_rate.idx].bitrate;
	} else
		sinfo->txrate.mcs = sta->last_tx_rate.idx;

Johannes Berg's avatar
Johannes Berg committed
368
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
369
370
371
372
373
374
375
376
377
#ifdef CONFIG_MAC80211_MESH
		sinfo->filled |= STATION_INFO_LLID |
				 STATION_INFO_PLID |
				 STATION_INFO_PLINK_STATE;

		sinfo->llid = le16_to_cpu(sta->llid);
		sinfo->plid = le16_to_cpu(sta->plid);
		sinfo->plink_state = sta->plink_state;
#endif
Johannes Berg's avatar
Johannes Berg committed
378
	}
379
380
381
382
383
384
}


static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *mac, struct station_info *sinfo)
{
385
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
386
	struct sta_info *sta;
387
388
389
	int ret = -ENOENT;

	rcu_read_lock();
390

391
	sta = sta_info_get_by_idx(sdata, idx);
392
393
	if (sta) {
		ret = 0;
394
		memcpy(mac, sta->sta.addr, ETH_ALEN);
395
396
		sta_set_sinfo(sta, sinfo);
	}
397

398
	rcu_read_unlock();
399

400
	return ret;
401
402
}

403
404
405
406
407
408
409
410
static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
				 int idx, struct survey_info *survey)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	return drv_get_survey(local, idx, survey);
}

411
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
412
				 u8 *mac, struct station_info *sinfo)
413
{
414
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
415
	struct sta_info *sta;
416
	int ret = -ENOENT;
417

418
	rcu_read_lock();
419

420
	sta = sta_info_get_bss(sdata, mac);
421
422
423
424
425
426
427
428
	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

	rcu_read_unlock();

	return ret;
429
430
}

431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
/*
 * This handles both adding a beacon and setting new beacon info
 */
static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
				   struct beacon_parameters *params)
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
	int size;
	int err = -EINVAL;

	old = sdata->u.ap.beacon;

	/* head must not be zero-length */
	if (params->head && !params->head_len)
		return -EINVAL;

	/*
	 * This is a kludge. beacon interval should really be part
	 * of the beacon information.
	 */
452
453
454
455
456
	if (params->interval &&
	    (sdata->vif.bss_conf.beacon_int != params->interval)) {
		sdata->vif.bss_conf.beacon_int = params->interval;
		ieee80211_bss_info_change_notify(sdata,
						 BSS_CHANGED_BEACON_INT);
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
	}

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
		return err;

	/* sorry, no way to start beaconing without dtim period */
	if (!params->dtim_period && !old)
		return err;

	/* new or old head? */
	if (params->head)
		new_head_len = params->head_len;
	else
		new_head_len = old->head_len;

	/* new or old tail? */
	if (params->tail || !old)
		/* params->tail_len will be zero for !params->tail */
		new_tail_len = params->tail_len;
	else
		new_tail_len = old->tail_len;

	size = sizeof(*new) + new_head_len + new_tail_len;

	new = kzalloc(size, GFP_KERNEL);
	if (!new)
		return -ENOMEM;

	/* start filling the new info now */

	/* new or old dtim period? */
	if (params->dtim_period)
		new->dtim_period = params->dtim_period;
	else
		new->dtim_period = old->dtim_period;

	/*
	 * pointers go into the block we allocated,
	 * memory is | beacon_data | head | tail |
	 */
	new->head = ((u8 *) new) + sizeof(*new);
	new->tail = new->head + new_head_len;
	new->head_len = new_head_len;
	new->tail_len = new_tail_len;

	/* copy in head */
	if (params->head)
		memcpy(new->head, params->head, new_head_len);
	else
		memcpy(new->head, old->head, new_head_len);

	/* copy in optional tail */
	if (params->tail)
		memcpy(new->tail, params->tail, new_tail_len);
	else
		if (old)
			memcpy(new->tail, old->tail, new_tail_len);

516
517
	sdata->vif.bss_conf.dtim_period = new->dtim_period;

518
519
520
521
522
523
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	synchronize_rcu();

	kfree(old);

524
525
526
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
						BSS_CHANGED_BEACON);
	return 0;
527
528
529
530
531
}

static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
532
	struct ieee80211_sub_if_data *sdata;
533
534
	struct beacon_data *old;

535
536
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

537
538
539
540
541
542
543
544
545
546
547
	old = sdata->u.ap.beacon;

	if (old)
		return -EALREADY;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
548
	struct ieee80211_sub_if_data *sdata;
549
550
	struct beacon_data *old;

551
552
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

553
554
555
556
557
558
559
560
561
562
	old = sdata->u.ap.beacon;

	if (!old)
		return -ENOENT;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
{
563
	struct ieee80211_sub_if_data *sdata;
564
565
	struct beacon_data *old;

566
567
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

568
569
570
571
572
573
574
575
576
	old = sdata->u.ap.beacon;

	if (!old)
		return -ENOENT;

	rcu_assign_pointer(sdata->u.ap.beacon, NULL);
	synchronize_rcu();
	kfree(old);

577
578
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
	return 0;
579
580
}

581
582
583
584
585
586
587
588
589
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
	u8 da[ETH_ALEN];	/* broadcast */
	u8 sa[ETH_ALEN];	/* STA addr */
	__be16 len;		/* 6 */
	u8 dsap;		/* 0 */
	u8 ssap;		/* 0 */
	u8 control;
	u8 xid_info[3];
Eric Dumazet's avatar
Eric Dumazet committed
590
} __packed;
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608

static void ieee80211_send_layer2_update(struct sta_info *sta)
{
	struct iapp_layer2_update *msg;
	struct sk_buff *skb;

	/* Send Level 2 Update Frame to update forwarding tables in layer 2
	 * bridge devices */

	skb = dev_alloc_skb(sizeof(*msg));
	if (!skb)
		return;
	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));

	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */

	memset(msg->da, 0xff, ETH_ALEN);
609
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
610
611
612
613
614
615
616
617
618
	msg->len = htons(6);
	msg->dsap = 0;
	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
	msg->control = 0xaf;	/* XID response lsb.1111F101.
				 * F=0 (no poll command; unsolicited frame) */
	msg->xid_info[0] = 0x81;	/* XID format identifier */
	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */

619
620
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
621
	memset(skb->cb, 0, sizeof(skb->cb));
622
	netif_rx_ni(skb);
623
624
625
626
627
628
}

static void sta_apply_parameters(struct ieee80211_local *local,
				 struct sta_info *sta,
				 struct station_parameters *params)
{
629
	unsigned long flags;
630
631
	u32 rates;
	int i, j;
632
	struct ieee80211_supported_band *sband;
633
	struct ieee80211_sub_if_data *sdata = sta->sdata;
634
	u32 mask, set;
635

Johannes Berg's avatar
Johannes Berg committed
636
637
	sband = local->hw.wiphy->bands[local->oper_channel->band];

638
	spin_lock_irqsave(&sta->flaglock, flags);
639
640
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
Johannes Berg's avatar
Johannes Berg committed
641

642
	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
643
		sta->flags &= ~WLAN_STA_AUTHORIZED;
644
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
645
			sta->flags |= WLAN_STA_AUTHORIZED;
646
	}
647

648
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
649
		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
650
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
651
			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
652
	}
653

654
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
655
		sta->flags &= ~WLAN_STA_WME;
656
		if (set & BIT(NL80211_STA_FLAG_WME))
657
			sta->flags |= WLAN_STA_WME;
658
	}
659

660
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
661
		sta->flags &= ~WLAN_STA_MFP;
662
		if (set & BIT(NL80211_STA_FLAG_MFP))
663
			sta->flags |= WLAN_STA_MFP;
664
	}
665
	spin_unlock_irqrestore(&sta->flaglock, flags);
666

667
668
669
670
671
672
673
	/*
	 * cfg80211 validates this (1-2007) and allows setting the AID
	 * only when creating a new station entry
	 */
	if (params->aid)
		sta->sta.aid = params->aid;

Johannes Berg's avatar
Johannes Berg committed
674
675
676
677
678
679
680
	/*
	 * FIXME: updating the following information is racy when this
	 *	  function is called from ieee80211_change_station().
	 *	  However, all this information should be static so
	 *	  maybe we should just reject attemps to change it.
	 */

681
682
683
684
685
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
686

687
688
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
689
690
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
691
692
693
					rates |= BIT(j);
			}
		}
694
		sta->sta.supp_rates[local->oper_channel->band] = rates;
695
	}
696

697
	if (params->ht_capa)
Johannes Berg's avatar
Johannes Berg committed
698
699
		ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
						  params->ht_capa,
700
						  &sta->sta.ht_cap);
701

Johannes Berg's avatar
Johannes Berg committed
702
	if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
703
704
705
706
707
708
709
710
		switch (params->plink_action) {
		case PLINK_ACTION_OPEN:
			mesh_plink_open(sta);
			break;
		case PLINK_ACTION_BLOCK:
			mesh_plink_block(sta);
			break;
		}
Johannes Berg's avatar
Johannes Berg committed
711
	}
712
713
714
715
716
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
717
	struct ieee80211_local *local = wiphy_priv(wiphy);
718
719
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
Johannes Berg's avatar
Johannes Berg committed
720
	int err;
721
	int layer2_update;
722
723
724
725

	if (params->vlan) {
		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

726
727
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
728
729
730
731
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

732
	if (compare_ether_addr(mac, sdata->vif.addr) == 0)
733
734
735
736
737
738
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
Johannes Berg's avatar
Johannes Berg committed
739
740
	if (!sta)
		return -ENOMEM;
741
742
743
744
745

	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;

	sta_apply_parameters(local, sta, params);

746
	rate_control_rate_init(sta);
747

748
749
750
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

751
	err = sta_info_insert_rcu(sta);
Johannes Berg's avatar
Johannes Berg committed
752
753
754
755
756
	if (err) {
		rcu_read_unlock();
		return err;
	}

757
	if (layer2_update)
Johannes Berg's avatar
Johannes Berg committed
758
759
760
761
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

762
763
764
765
766
767
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
768
769
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
770

771
772
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

773
774
	if (mac)
		return sta_info_destroy_addr_bss(sdata, mac);
775

776
	sta_info_flush(local, sdata);
777
778
779
780
781
782
783
784
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
785
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786
	struct ieee80211_local *local = wiphy_priv(wiphy);
787
788
789
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;

Johannes Berg's avatar
Johannes Berg committed
790
791
	rcu_read_lock();

792
	sta = sta_info_get_bss(sdata, mac);
Johannes Berg's avatar
Johannes Berg committed
793
794
	if (!sta) {
		rcu_read_unlock();
795
		return -ENOENT;
Johannes Berg's avatar
Johannes Berg committed
796
	}
797

798
	if (params->vlan && params->vlan != sta->sdata->dev) {
799
800
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

801
802
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
Johannes Berg's avatar
Johannes Berg committed
803
			rcu_read_unlock();
804
			return -EINVAL;
Johannes Berg's avatar
Johannes Berg committed
805
		}
806

807
		if (params->vlan->ieee80211_ptr->use_4addr) {
Johannes Berg's avatar
Johannes Berg committed
808
809
			if (vlansdata->u.vlan.sta) {
				rcu_read_unlock();
810
				return -EBUSY;
Johannes Berg's avatar
Johannes Berg committed
811
			}
812
813
814
815

			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
		}

816
		sta->sdata = vlansdata;
817
818
819
820
821
		ieee80211_send_layer2_update(sta);
	}

	sta_apply_parameters(local, sta, params);

Johannes Berg's avatar
Johannes Berg committed
822
823
	rcu_read_unlock();

824
825
826
	return 0;
}

827
828
829
830
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
831
	struct ieee80211_sub_if_data *sdata;
832
833
834
835
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

836
837
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

838
	rcu_read_lock();
839
	sta = sta_info_get(sdata, next_hop);
840
841
	if (!sta) {
		rcu_read_unlock();
842
		return -ENOENT;
843
	}
844

845
	err = mesh_path_add(dst, sdata);
846
847
	if (err) {
		rcu_read_unlock();
848
		return err;
849
	}
850

851
	mpath = mesh_path_lookup(dst, sdata);
852
853
854
855
856
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
857

858
859
860
861
862
863
864
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
865
866
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

867
	if (dst)
868
		return mesh_path_del(dst, sdata);
869

870
	mesh_path_flush(sdata);
871
872
873
874
875
876
877
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
878
	struct ieee80211_sub_if_data *sdata;
879
880
881
	struct mesh_path *mpath;
	struct sta_info *sta;

882
883
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

884
885
	rcu_read_lock();

886
	sta = sta_info_get(sdata, next_hop);
887
888
	if (!sta) {
		rcu_read_unlock();
889
		return -ENOENT;
890
	}
891

892
	mpath = mesh_path_lookup(dst, sdata);
893
894
895
896
897
898
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
899

900
901
902
903
904
905
906
907
	rcu_read_unlock();
	return 0;
}

static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
			    struct mpath_info *pinfo)
{
	if (mpath->next_hop)
908
		memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
909
910
911
	else
		memset(next_hop, 0, ETH_ALEN);

912
913
	pinfo->generation = mesh_paths_generation;

914
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
915
			MPATH_INFO_SN |
916
917
918
919
920
921
922
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
923
	pinfo->sn = mpath->sn;
924
925
926
927
928
929
930
931
932
933
934
	pinfo->metric = mpath->metric;
	if (time_before(jiffies, mpath->exp_time))
		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
	pinfo->discovery_timeout =
			jiffies_to_msecs(mpath->discovery_timeout);
	pinfo->discovery_retries = mpath->discovery_retries;
	pinfo->flags = 0;
	if (mpath->flags & MESH_PATH_ACTIVE)
		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
935
936
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
937
938
939
940
941
942
943
944
945
946
947
948
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;

	pinfo->flags = mpath->flags;
}

static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)

{
949
	struct ieee80211_sub_if_data *sdata;
950
951
	struct mesh_path *mpath;

952
953
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

954
	rcu_read_lock();
955
	mpath = mesh_path_lookup(dst, sdata);
956
957
958
959
960
961
962
963
964
965
966
967
968
969
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *dst, u8 *next_hop,
				 struct mpath_info *pinfo)
{
970
	struct ieee80211_sub_if_data *sdata;
971
972
	struct mesh_path *mpath;

973
974
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

975
	rcu_read_lock();
976
	mpath = mesh_path_lookup_by_idx(idx, sdata);
977
978
979
980
981
982
983
984
985
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002

static int ieee80211_get_mesh_params(struct wiphy *wiphy,
				struct net_device *dev,
				struct mesh_config *conf)
{
	struct ieee80211_sub_if_data *sdata;
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
	return 0;
}

static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
{
	return (mask >> (parm-1)) & 0x1;
}

1003
1004
1005
static int ieee80211_update_mesh_params(struct wiphy *wiphy,
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1006
1007
1008
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1009
1010
	struct ieee80211_if_mesh *ifmsh;

1011
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1012
	ifmsh = &sdata->u.mesh;
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027

	/* Set the config options which we are interested in setting */
	conf = &(sdata->u.mesh.mshcfg);
	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
		conf->dot11MeshTTL = nconf->dot11MeshTTL;
1028
1029
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
		conf->dot11MeshTTL = nconf->element_ttl;
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
		conf->auto_open_plinks = nconf->auto_open_plinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
		conf->dot11MeshHWMPmaxPREQretries =
			nconf->dot11MeshHWMPmaxPREQretries;
	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
		conf->path_refresh_time = nconf->path_refresh_time;
	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
		conf->min_discovery_timeout = nconf->min_discovery_timeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathTimeout =
			nconf->dot11MeshHWMPactivePathTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPpreqMinInterval =
			nconf->dot11MeshHWMPpreqMinInterval;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1049
1050
1051
1052
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1053
1054
1055
	return 0;
}

1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
			       const struct mesh_config *conf,
			       const struct mesh_setup *setup)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;

	memcpy(&sdata->u.mesh.mshcfg, conf, sizeof(struct mesh_config));
	ifmsh->mesh_id_len = setup->mesh_id_len;
	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);

	ieee80211_start_mesh(sdata);

	return 0;
}

static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	ieee80211_stop_mesh(sdata);

	return 0;
}
1080
1081
#endif

1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
	struct ieee80211_sub_if_data *sdata;
	u32 changed = 0;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (params->use_cts_prot >= 0) {
1092
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1093
1094
1095
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
1096
		sdata->vif.bss_conf.use_short_preamble =
1097
1098
1099
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1100
1101
1102
1103
1104
1105
1106

	if (!sdata->vif.bss_conf.use_short_slot &&
	    sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1107
	if (params->use_short_slot_time >= 0) {
1108
		sdata->vif.bss_conf.use_short_slot =
1109
1110
1111
1112
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
	if (params->basic_rates) {
		int i, j;
		u32 rates = 0;
		struct ieee80211_local *local = wiphy_priv(wiphy);
		struct ieee80211_supported_band *sband =
			wiphy->bands[local->oper_channel->band];

		for (i = 0; i < params->basic_rates_len; i++) {
			int rate = (params->basic_rates[i] & 0x7f) * 5;
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
					rates |= BIT(j);
			}
		}
		sdata->vif.bss_conf.basic_rates = rates;
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1131
1132
1133
1134
1135
1136
1137
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1138
1139
1140
1141
1142
1143
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1144
1145
1146
1147
1148
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
static int ieee80211_set_txq_params(struct wiphy *wiphy,
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_tx_queue_params p;

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

	memset(&p, 0, sizeof(p));
	p.aifs = params->aifs;
	p.cw_max = params->cwmax;
	p.cw_min = params->cwmin;
	p.txop = params->txop;
1163
1164
1165
1166
1167
1168
1169

	/*
	 * Setting tx queue params disables u-apsd because it's only
	 * called in master mode.
	 */
	p.uapsd = false;

1170
	if (drv_conf_tx(local, params->queue, &p)) {
Joe Perches's avatar
Joe Perches committed
1171
1172
1173
		wiphy_debug(local->hw.wiphy,
			    "failed to set TX queue parameters for queue %d\n",
			    params->queue);
Jouni Malinen's avatar