nl80211.c 44.5 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
/*
 * This is the new netlink-based wireless configuration interface.
 *
 * Copyright 2006, 2007	Johannes Berg <johannes@sipsolutions.net>
 */

#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <linux/netlink.h>
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include "core.h"
#include "nl80211.h"
21
#include "reg.h"
22
23
24
25
26
27
28
29
30
31
32

/* the netlink family */
static struct genl_family nl80211_fam = {
	.id = GENL_ID_GENERATE,	/* don't bother with a hardcoded ID */
	.name = "nl80211",	/* have users key off the name instead */
	.hdrsize = 0,		/* no private header */
	.version = 1,		/* no particular meaning now */
	.maxattr = NL80211_ATTR_MAX,
};

/* internal helper: get drv and dev */
Johannes Berg's avatar
Johannes Berg committed
33
static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
34
35
36
37
38
				       struct cfg80211_registered_device **drv,
				       struct net_device **dev)
{
	int ifindex;

Johannes Berg's avatar
Johannes Berg committed
39
	if (!attrs[NL80211_ATTR_IFINDEX])
40
41
		return -EINVAL;

Johannes Berg's avatar
Johannes Berg committed
42
	ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
	*dev = dev_get_by_index(&init_net, ifindex);
	if (!*dev)
		return -ENODEV;

	*drv = cfg80211_get_dev_from_ifindex(ifindex);
	if (IS_ERR(*drv)) {
		dev_put(*dev);
		return PTR_ERR(*drv);
	}

	return 0;
}

/* policy for the attributes */
static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
				      .len = BUS_ID_SIZE-1 },

	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
65
66
67
68
69
70
71
72

	[NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },

	[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
				    .len = WLAN_MAX_KEY_LEN },
	[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
	[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
73
74
75
76
77
78
79

	[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
	[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
	[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
				       .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
				       .len = IEEE80211_MAX_DATA_LEN },
80
81
82
83
84
	[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
	[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
					       .len = NL80211_MAX_SUPP_RATES },
85
	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
86
	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg's avatar
Johannes Berg committed
87
	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
88
89
90
	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
				.len = IEEE80211_MAX_MESH_ID_LEN },
	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
91

92
93
94
	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

95
96
97
	[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
	[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
	[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
98
99
100

	[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
					 .len = NL80211_HT_CAPABILITY_LEN },
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
};

/* message building helper */
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
	return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
}

/* netlink command implementations */

static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
			      struct cfg80211_registered_device *dev)
{
	void *hdr;
117
118
119
	struct nlattr *nl_bands, *nl_band;
	struct nlattr *nl_freqs, *nl_freq;
	struct nlattr *nl_rates, *nl_rate;
120
	struct nlattr *nl_modes;
121
122
123
124
	enum ieee80211_band band;
	struct ieee80211_channel *chan;
	struct ieee80211_rate *rate;
	int i;
125
	u16 ifmodes = dev->wiphy.interface_modes;
126
127
128
129
130
131
132

	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
	if (!hdr)
		return -1;

	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
	NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
133

134
135
136
137
138
139
140
141
142
143
144
145
146
147
	nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
	if (!nl_modes)
		goto nla_put_failure;

	i = 0;
	while (ifmodes) {
		if (ifmodes & 1)
			NLA_PUT_FLAG(msg, i);
		ifmodes >>= 1;
		i++;
	}

	nla_nest_end(msg, nl_modes);

148
149
150
151
152
153
154
155
156
157
158
159
	nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
	if (!nl_bands)
		goto nla_put_failure;

	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!dev->wiphy.bands[band])
			continue;

		nl_band = nla_nest_start(msg, band);
		if (!nl_band)
			goto nla_put_failure;

160
161
162
163
164
165
166
167
168
169
170
171
172
		/* add HT info */
		if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
			NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
				sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
				&dev->wiphy.bands[band]->ht_cap.mcs);
			NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
				dev->wiphy.bands[band]->ht_cap.cap);
			NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
				dev->wiphy.bands[band]->ht_cap.ampdu_factor);
			NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
				dev->wiphy.bands[band]->ht_cap.ampdu_density);
		}

173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
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
		/* add frequencies */
		nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
		if (!nl_freqs)
			goto nla_put_failure;

		for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
			nl_freq = nla_nest_start(msg, i);
			if (!nl_freq)
				goto nla_put_failure;

			chan = &dev->wiphy.bands[band]->channels[i];
			NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
				    chan->center_freq);

			if (chan->flags & IEEE80211_CHAN_DISABLED)
				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
			if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
			if (chan->flags & IEEE80211_CHAN_NO_IBSS)
				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
			if (chan->flags & IEEE80211_CHAN_RADAR)
				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);

			nla_nest_end(msg, nl_freq);
		}

		nla_nest_end(msg, nl_freqs);

		/* add bitrates */
		nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
		if (!nl_rates)
			goto nla_put_failure;

		for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
			nl_rate = nla_nest_start(msg, i);
			if (!nl_rate)
				goto nla_put_failure;

			rate = &dev->wiphy.bands[band]->bitrates[i];
			NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
				    rate->bitrate);
			if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
				NLA_PUT_FLAG(msg,
					NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);

			nla_nest_end(msg, nl_rate);
		}

		nla_nest_end(msg, nl_rates);

		nla_nest_end(msg, nl_band);
	}
	nla_nest_end(msg, nl_bands);

227
228
229
	return genlmsg_end(msg, hdr);

 nla_put_failure:
230
231
	genlmsg_cancel(msg, hdr);
	return -EMSGSIZE;
232
233
234
235
236
237
238
239
240
241
}

static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
{
	int idx = 0;
	int start = cb->args[0];
	struct cfg80211_registered_device *dev;

	mutex_lock(&cfg80211_drv_mutex);
	list_for_each_entry(dev, &cfg80211_drv_list, list) {
242
		if (++idx <= start)
243
244
245
			continue;
		if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
246
247
				       dev) < 0) {
			idx--;
248
			break;
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
	}
	mutex_unlock(&cfg80211_drv_mutex);

	cb->args[0] = idx;

	return skb->len;
}

static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
	struct sk_buff *msg;
	struct cfg80211_registered_device *dev;

	dev = cfg80211_get_dev_from_info(info);
	if (IS_ERR(dev))
		return PTR_ERR(dev);

	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg)
		goto out_err;

	if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
		goto out_free;

	cfg80211_put_dev(dev);

	return genlmsg_unicast(msg, info->snd_pid);

 out_free:
	nlmsg_free(msg);
 out_err:
	cfg80211_put_dev(dev);
	return -ENOBUFS;
}

static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *rdev;
	int result;

	if (!info->attrs[NL80211_ATTR_WIPHY_NAME])
		return -EINVAL;

	rdev = cfg80211_get_dev_from_info(info);
	if (IS_ERR(rdev))
		return PTR_ERR(rdev);

	result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));

	cfg80211_put_dev(rdev);
	return result;
}


static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
			      struct net_device *dev)
{
	void *hdr;

	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
	if (!hdr)
		return -1;

	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
Johannes Berg's avatar
Johannes Berg committed
315
	NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
316
317
318
	return genlmsg_end(msg, hdr);

 nla_put_failure:
319
320
	genlmsg_cancel(msg, hdr);
	return -EMSGSIZE;
321
322
323
324
325
326
327
328
329
330
331
332
333
}

static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
{
	int wp_idx = 0;
	int if_idx = 0;
	int wp_start = cb->args[0];
	int if_start = cb->args[1];
	struct cfg80211_registered_device *dev;
	struct wireless_dev *wdev;

	mutex_lock(&cfg80211_drv_mutex);
	list_for_each_entry(dev, &cfg80211_drv_list, list) {
Johannes Berg's avatar
Johannes Berg committed
334
335
		if (wp_idx < wp_start) {
			wp_idx++;
336
			continue;
Johannes Berg's avatar
Johannes Berg committed
337
		}
338
339
340
341
		if_idx = 0;

		mutex_lock(&dev->devlist_mtx);
		list_for_each_entry(wdev, &dev->netdev_list, list) {
Johannes Berg's avatar
Johannes Berg committed
342
343
			if (if_idx < if_start) {
				if_idx++;
344
				continue;
Johannes Berg's avatar
Johannes Berg committed
345
			}
346
347
			if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
					       cb->nlh->nlmsg_seq, NLM_F_MULTI,
Johannes Berg's avatar
Johannes Berg committed
348
349
350
351
352
					       wdev->netdev) < 0) {
				mutex_unlock(&dev->devlist_mtx);
				goto out;
			}
			if_idx++;
353
354
		}
		mutex_unlock(&dev->devlist_mtx);
Johannes Berg's avatar
Johannes Berg committed
355
356

		wp_idx++;
357
	}
Johannes Berg's avatar
Johannes Berg committed
358
 out:
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
	mutex_unlock(&cfg80211_drv_mutex);

	cb->args[0] = wp_idx;
	cb->args[1] = if_idx;

	return skb->len;
}

static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
{
	struct sk_buff *msg;
	struct cfg80211_registered_device *dev;
	struct net_device *netdev;
	int err;

Johannes Berg's avatar
Johannes Berg committed
374
	err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
	if (err)
		return err;

	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg)
		goto out_err;

	if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0)
		goto out_free;

	dev_put(netdev);
	cfg80211_put_dev(dev);

	return genlmsg_unicast(msg, info->snd_pid);

 out_free:
	nlmsg_free(msg);
 out_err:
	dev_put(netdev);
	cfg80211_put_dev(dev);
	return -ENOBUFS;
}

398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
	[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
	[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
	[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
	[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
	[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
};

static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
{
	struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
	int flag;

	*mntrflags = 0;

	if (!nla)
		return -EINVAL;

	if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
			     nla, mntr_flags_policy))
		return -EINVAL;

	for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
		if (flags[flag])
			*mntrflags |= (1<<flag);

	return 0;
}

427
428
429
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
430
	struct vif_params params;
431
432
433
	int err, ifindex;
	enum nl80211_iftype type;
	struct net_device *dev;
434
	u32 _flags, *flags = NULL;
435

436
437
	memset(&params, 0, sizeof(params));

Johannes Berg's avatar
Johannes Berg committed
438
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
439
440
441
	if (err)
		return err;
	ifindex = dev->ifindex;
442
	type = dev->ieee80211_ptr->iftype;
443
444
	dev_put(dev);

445
446
447
448
449
450
451
	err = -EINVAL;
	if (info->attrs[NL80211_ATTR_IFTYPE]) {
		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
		if (type > NL80211_IFTYPE_MAX)
			goto unlock;
	}

452
453
	if (!drv->ops->change_virtual_intf ||
	    !(drv->wiphy.interface_modes & (1 << type))) {
454
455
456
457
		err = -EOPNOTSUPP;
		goto unlock;
	}

458
459
460
461
462
	if (info->attrs[NL80211_ATTR_MESH_ID]) {
		if (type != NL80211_IFTYPE_MESH_POINT) {
			err = -EINVAL;
			goto unlock;
		}
463
464
465
466
		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
	}

467
468
469
470
471
472
473
474
475
476
	if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
		if (type != NL80211_IFTYPE_MONITOR) {
			err = -EINVAL;
			goto unlock;
		}
		err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
					  &_flags);
		if (!err)
			flags = &_flags;
	}
477
	rtnl_lock();
478
	err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
479
					    type, flags, &params);
Johannes Berg's avatar
Johannes Berg committed
480
481
482
483

	dev = __dev_get_by_index(&init_net, ifindex);
	WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));

484
485
486
487
488
489
490
491
492
493
	rtnl_unlock();

 unlock:
	cfg80211_put_dev(drv);
	return err;
}

static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
494
	struct vif_params params;
495
496
	int err;
	enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
497
	u32 flags;
498

499
500
	memset(&params, 0, sizeof(params));

501
502
503
504
505
506
507
508
509
510
511
512
513
	if (!info->attrs[NL80211_ATTR_IFNAME])
		return -EINVAL;

	if (info->attrs[NL80211_ATTR_IFTYPE]) {
		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
		if (type > NL80211_IFTYPE_MAX)
			return -EINVAL;
	}

	drv = cfg80211_get_dev_from_info(info);
	if (IS_ERR(drv))
		return PTR_ERR(drv);

514
515
	if (!drv->ops->add_virtual_intf ||
	    !(drv->wiphy.interface_modes & (1 << type))) {
516
517
518
519
		err = -EOPNOTSUPP;
		goto unlock;
	}

520
521
522
523
524
525
	if (type == NL80211_IFTYPE_MESH_POINT &&
	    info->attrs[NL80211_ATTR_MESH_ID]) {
		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
	}

526
	rtnl_lock();
527
528
529
	err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
				  info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
				  &flags);
530
	err = drv->ops->add_virtual_intf(&drv->wiphy,
531
		nla_data(info->attrs[NL80211_ATTR_IFNAME]),
532
		type, err ? NULL : &flags, &params);
533
534
	rtnl_unlock();

535

536
537
538
539
540
541
542
543
544
545
546
 unlock:
	cfg80211_put_dev(drv);
	return err;
}

static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int ifindex, err;
	struct net_device *dev;

Johannes Berg's avatar
Johannes Berg committed
547
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
	if (err)
		return err;
	ifindex = dev->ifindex;
	dev_put(dev);

	if (!drv->ops->del_virtual_intf) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	return err;
}

567
568
569
570
571
572
573
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
602
603
604
605
606
607
608
609
610
611
612
613
614
struct get_key_cookie {
	struct sk_buff *msg;
	int error;
};

static void get_key_callback(void *c, struct key_params *params)
{
	struct get_key_cookie *cookie = c;

	if (params->key)
		NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
			params->key_len, params->key);

	if (params->seq)
		NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
			params->seq_len, params->seq);

	if (params->cipher)
		NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
			    params->cipher);

	return;
 nla_put_failure:
	cookie->error = 1;
}

static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 key_idx = 0;
	u8 *mac_addr = NULL;
	struct get_key_cookie cookie = {
		.error = 0,
	};
	void *hdr;
	struct sk_buff *msg;

	if (info->attrs[NL80211_ATTR_KEY_IDX])
		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);

	if (key_idx > 3)
		return -EINVAL;

	if (info->attrs[NL80211_ATTR_MAC])
		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
615
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
	if (err)
		return err;

	if (!drv->ops->get_key) {
		err = -EOPNOTSUPP;
		goto out;
	}

	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg) {
		err = -ENOMEM;
		goto out;
	}

	hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
			     NL80211_CMD_NEW_KEY);

	if (IS_ERR(hdr)) {
		err = PTR_ERR(hdr);
		goto out;
	}

	cookie.msg = msg;

	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
	NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
	if (mac_addr)
		NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);

	rtnl_lock();
	err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
				&cookie, get_key_callback);
	rtnl_unlock();

	if (err)
		goto out;

	if (cookie.error)
		goto nla_put_failure;

	genlmsg_end(msg, hdr);
	err = genlmsg_unicast(msg, info->snd_pid);
	goto out;

 nla_put_failure:
	err = -ENOBUFS;
	nlmsg_free(msg);
 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 key_idx;

	if (!info->attrs[NL80211_ATTR_KEY_IDX])
		return -EINVAL;

	key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);

	if (key_idx > 3)
		return -EINVAL;

	/* currently only support setting default key */
	if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
		return -EINVAL;

Johannes Berg's avatar
Johannes Berg committed
688
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
	if (err)
		return err;

	if (!drv->ops->set_default_key) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct key_params params;
	u8 key_idx = 0;
	u8 *mac_addr = NULL;

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

	if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
		return -EINVAL;

	if (info->attrs[NL80211_ATTR_KEY_DATA]) {
		params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
		params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
	}

	if (info->attrs[NL80211_ATTR_KEY_IDX])
		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);

	params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);

	if (info->attrs[NL80211_ATTR_MAC])
		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

	if (key_idx > 3)
		return -EINVAL;

	/*
	 * Disallow pairwise keys with non-zero index unless it's WEP
	 * (because current deployments use pairwise WEP keys with
	 * non-zero indizes but 802.11i clearly specifies to use zero)
	 */
	if (mac_addr && key_idx &&
	    params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
	    params.cipher != WLAN_CIPHER_SUITE_WEP104)
		return -EINVAL;

	/* TODO: add definitions for the lengths to linux/ieee80211.h */
	switch (params.cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
		if (params.key_len != 5)
			return -EINVAL;
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		if (params.key_len != 32)
			return -EINVAL;
		break;
	case WLAN_CIPHER_SUITE_CCMP:
		if (params.key_len != 16)
			return -EINVAL;
		break;
	case WLAN_CIPHER_SUITE_WEP104:
		if (params.key_len != 13)
			return -EINVAL;
		break;
	default:
		return -EINVAL;
	}

Johannes Berg's avatar
Johannes Berg committed
769
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
	if (err)
		return err;

	if (!drv->ops->add_key) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 key_idx = 0;
	u8 *mac_addr = NULL;

	if (info->attrs[NL80211_ATTR_KEY_IDX])
		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);

	if (key_idx > 3)
		return -EINVAL;

	if (info->attrs[NL80211_ATTR_MAC])
		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
805
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
	if (err)
		return err;

	if (!drv->ops->del_key) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

824
825
826
827
828
829
830
831
832
833
static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
{
        int (*call)(struct wiphy *wiphy, struct net_device *dev,
		    struct beacon_parameters *info);
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct beacon_parameters params;
	int haveinfo = 0;

Johannes Berg's avatar
Johannes Berg committed
834
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
	if (err)
		return err;

	switch (info->genlhdr->cmd) {
	case NL80211_CMD_NEW_BEACON:
		/* these are required for NEW_BEACON */
		if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
		    !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
		    !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
			err = -EINVAL;
			goto out;
		}

		call = drv->ops->add_beacon;
		break;
	case NL80211_CMD_SET_BEACON:
		call = drv->ops->set_beacon;
		break;
	default:
		WARN_ON(1);
		err = -EOPNOTSUPP;
		goto out;
	}

	if (!call) {
		err = -EOPNOTSUPP;
		goto out;
	}

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

	if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
		params.interval =
		    nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
		haveinfo = 1;
	}

	if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
		params.dtim_period =
		    nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
		haveinfo = 1;
	}

	if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
		params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
		params.head_len =
		    nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
		haveinfo = 1;
	}

	if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
		params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
		params.tail_len =
		    nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
		haveinfo = 1;
	}

	if (!haveinfo) {
		err = -EINVAL;
		goto out;
	}

	rtnl_lock();
	err = call(&drv->wiphy, dev, &params);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;

Johannes Berg's avatar
Johannes Berg committed
913
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
	if (err)
		return err;

	if (!drv->ops->del_beacon) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->del_beacon(&drv->wiphy, dev);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
	[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
	[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
	[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
};

static int parse_station_flags(struct nlattr *nla, u32 *staflags)
{
	struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
	int flag;

	*staflags = 0;

	if (!nla)
		return 0;

	if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
			     nla, sta_flags_policy))
		return -EINVAL;

	*staflags = STATION_FLAG_CHANGED;

	for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
		if (flags[flag])
			*staflags |= (1<<flag);

	return 0;
}

961
962
static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
				int flags, struct net_device *dev,
963
				u8 *mac_addr, struct station_info *sinfo)
964
965
{
	void *hdr;
966
	struct nlattr *sinfoattr;
967
968
969
970
971
972
973
974

	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
	if (!hdr)
		return -1;

	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);

975
976
	sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
	if (!sinfoattr)
977
		goto nla_put_failure;
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
	if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
		NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
			    sinfo->inactive_time);
	if (sinfo->filled & STATION_INFO_RX_BYTES)
		NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
			    sinfo->rx_bytes);
	if (sinfo->filled & STATION_INFO_TX_BYTES)
		NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
			    sinfo->tx_bytes);
	if (sinfo->filled & STATION_INFO_LLID)
		NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
			    sinfo->llid);
	if (sinfo->filled & STATION_INFO_PLID)
		NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
			    sinfo->plid);
	if (sinfo->filled & STATION_INFO_PLINK_STATE)
		NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
			    sinfo->plink_state);

	nla_nest_end(msg, sinfoattr);
998
999
1000
1001

	return genlmsg_end(msg, hdr);

 nla_put_failure:
1002
1003
	genlmsg_cancel(msg, hdr);
	return -EMSGSIZE;
1004
1005
}

1006
static int nl80211_dump_station(struct sk_buff *skb,
Johannes Berg's avatar
Johannes Berg committed
1007
				struct netlink_callback *cb)
1008
1009
1010
{
	struct station_info sinfo;
	struct cfg80211_registered_device *dev;
Johannes Berg's avatar
Johannes Berg committed
1011
	struct net_device *netdev;
1012
	u8 mac_addr[ETH_ALEN];
Johannes Berg's avatar
Johannes Berg committed
1013
1014
	int ifidx = cb->args[0];
	int sta_idx = cb->args[1];
1015
1016
	int err;

Johannes Berg's avatar
Johannes Berg committed
1017
1018
1019
1020
1021
1022
	if (!ifidx) {
		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
				  nl80211_policy);
		if (err)
			return err;
1023

Johannes Berg's avatar
Johannes Berg committed
1024
1025
		if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
			return -EINVAL;
1026

Johannes Berg's avatar
Johannes Berg committed
1027
1028
1029
		ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
		if (!ifidx)
			return -EINVAL;
1030
1031
	}

Johannes Berg's avatar
Johannes Berg committed
1032
1033
1034
	netdev = dev_get_by_index(&init_net, ifidx);
	if (!netdev)
		return -ENODEV;
1035

Johannes Berg's avatar
Johannes Berg committed
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
	dev = cfg80211_get_dev_from_ifindex(ifidx);
	if (IS_ERR(dev)) {
		err = PTR_ERR(dev);
		goto out_put_netdev;
	}

	if (!dev->ops->dump_station) {
		err = -ENOSYS;
		goto out_err;
	}

	rtnl_lock();

	while (1) {
		err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
					     mac_addr, &sinfo);
		if (err == -ENOENT)
			break;
		if (err)
			goto out_err_rtnl;

		if (nl80211_send_station(skb,
				NETLINK_CB(cb->skb).pid,
				cb->nlh->nlmsg_seq, NLM_F_MULTI,
				netdev, mac_addr,
				&sinfo) < 0)
			goto out;

		sta_idx++;
	}


 out:
	cb->args[1] = sta_idx;
	err = skb->len;
 out_err_rtnl:
	rtnl_unlock();
 out_err:
	cfg80211_put_dev(dev);
 out_put_netdev:
	dev_put(netdev);

	return err;
1079
}
1080

1081
1082
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
{
1083
1084
1085
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
1086
	struct station_info sinfo;
1087
1088
1089
	struct sk_buff *msg;
	u8 *mac_addr = NULL;

1090
	memset(&sinfo, 0, sizeof(sinfo));
1091
1092
1093
1094
1095
1096

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
1097
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1098
1099
1100
1101
1102
1103
1104
1105
1106
	if (err)
		return err;

	if (!drv->ops->get_station) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
1107
	err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1108
1109
	rtnl_unlock();

1110
1111
1112
	if (err)
		goto out;

1113
1114
1115
1116
1117
	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg)
		goto out;

	if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1118
				 dev, mac_addr, &sinfo) < 0)
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
		goto out_free;

	err = genlmsg_unicast(msg, info->snd_pid);
	goto out;

 out_free:
	nlmsg_free(msg);

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
}

/*
 * Get vlan interface making sure it is on the right wiphy.
 */
static int get_vlan(struct nlattr *vlanattr,
		    struct cfg80211_registered_device *rdev,
		    struct net_device **vlan)
{
	*vlan = NULL;

	if (vlanattr) {
		*vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
		if (!*vlan)
			return -ENODEV;
		if (!(*vlan)->ieee80211_ptr)
			return -EINVAL;
		if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
			return -EINVAL;
	}
	return 0;
}

static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct station_parameters params;
	u8 *mac_addr = NULL;

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

	params.listen_interval = -1;

	if (info->attrs[NL80211_ATTR_STA_AID])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

	if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
		params.supported_rates =
			nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
		params.supported_rates_len =
			nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
	}

	if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
		params.listen_interval =
		    nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);

1185
1186
1187
1188
	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
		params.ht_capa =
			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);

1189
1190
1191
1192
	if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
				&params.station_flags))
		return -EINVAL;

1193
1194
1195
1196
	if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
		params.plink_action =
		    nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);

Johannes Berg's avatar
Johannes Berg committed
1197
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
	if (err)
		return err;

	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
	if (err)
		goto out;

	if (!drv->ops->change_station) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
	rtnl_unlock();

 out:
	if (params.vlan)
		dev_put(params.vlan);
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct station_parameters params;
	u8 *mac_addr = NULL;

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

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_STA_AID])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
		return -EINVAL;

	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
	params.supported_rates =
		nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
	params.supported_rates_len =
		nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
	params.listen_interval =
		nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
Johannes Berg's avatar
Johannes Berg committed
1251
	params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1252
1253
1254
	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
		params.ht_capa =
			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1255
1256
1257
1258
1259

	if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
				&params.station_flags))
		return -EINVAL;

Johannes Berg's avatar
Johannes Berg committed
1260
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
	if (err)
		return err;

	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
	if (err)
		goto out;

	if (!drv->ops->add_station) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
	rtnl_unlock();

 out:
	if (params.vlan)
		dev_put(params.vlan);
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 *mac_addr = NULL;

	if (info->attrs[NL80211_ATTR_MAC])
		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
1295
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
	if (err)
		return err;

	if (!drv->ops->del_station) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
				int flags, struct net_device *dev,
				u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
{
	void *hdr;
	struct nlattr *pinfoattr;

	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
	if (!hdr)
		return -1;

	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
	NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);

	pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
	if (!pinfoattr)
		goto nla_put_failure;
	if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
		NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
			    pinfo->frame_qlen);
	if (pinfo->filled & MPATH_INFO_DSN)
		NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
			    pinfo->dsn);
	if (pinfo->filled & MPATH_INFO_METRIC)
		NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
			    pinfo->metric);
	if (pinfo->filled & MPATH_INFO_EXPTIME)
		NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
			    pinfo->exptime);
	if (pinfo->filled & MPATH_INFO_FLAGS)
		NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
			    pinfo->flags);
	if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
		NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
			    pinfo->discovery_timeout);
	if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
		NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
			    pinfo->discovery_retries);

	nla_nest_end(msg, pinfoattr);

	return genlmsg_end(msg, hdr);

 nla_put_failure:
1360
1361
	genlmsg_cancel(msg, hdr);
	return -EMSGSIZE;
1362
1363
1364
}

static int nl80211_dump_mpath(struct sk_buff *skb,
Johannes Berg's avatar
Johannes Berg committed
1365
			      struct netlink_callback *cb)
1366
1367
1368
{
	struct mpath_info pinfo;
	struct cfg80211_registered_device *dev;
Johannes Berg's avatar
Johannes Berg committed
1369
	struct net_device *netdev;
1370
1371
	u8 dst[ETH_ALEN];
	u8 next_hop[ETH_ALEN];
Johannes Berg's avatar
Johannes Berg committed
1372
1373
	int ifidx = cb->args[0];
	int path_idx = cb->args[1];
1374
1375
	int err;

Johannes Berg's avatar
Johannes Berg committed
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
	if (!ifidx) {
		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
				  nl80211_policy);
		if (err)
			return err;

		if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
			return -EINVAL;

		ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
		if (!ifidx)
			return -EINVAL;
	}

	netdev = dev_get_by_index(&init_net, ifidx);
	if (!netdev)
		return -ENODEV;

	dev = cfg80211_get_dev_from_ifindex(ifidx);
	if (IS_ERR(dev)) {
		err = PTR_ERR(dev);
		goto out_put_netdev;
	}

	if (!dev->ops->dump_mpath) {
		err = -ENOSYS;
		goto out_err;
	}

	rtnl_lock();

	while (1) {
		err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
					   dst, next_hop, &pinfo);
		if (err == -ENOENT)
1412
			break;
Johannes Berg's avatar
Johannes Berg committed
1413
1414
		if (err)
			goto out_err_rtnl;
1415

Johannes Berg's avatar
Johannes Berg committed
1416
1417
1418
1419
1420
		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
				       netdev, dst, next_hop,
				       &pinfo) < 0)
			goto out;
1421

Johannes Berg's avatar
Johannes Berg committed
1422
		path_idx++;
1423
1424
1425
	}


Johannes Berg's avatar
Johannes Berg committed
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
 out:
	cb->args[1] = path_idx;
	err = skb->len;
 out_err_rtnl:
	rtnl_unlock();
 out_err:
	cfg80211_put_dev(dev);
 out_put_netdev:
	dev_put(netdev);

	return err;
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
}

static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct mpath_info pinfo;
	struct sk_buff *msg;
	u8 *dst = NULL;
	u8 next_hop[ETH_ALEN];

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

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
1456
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
	if (err)
		return err;

	if (!drv->ops->get_mpath) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
	rtnl_unlock();

	if (err)
		goto out;

	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg)
		goto out;

	if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
				 dev, dst, next_hop, &pinfo) < 0)
		goto out_free;

	err = genlmsg_unicast(msg, info->snd_pid);
	goto out;

 out_free:
	nlmsg_free(msg);

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 *dst = NULL;
	u8 *next_hop = NULL;

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
		return -EINVAL;

	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);

Johannes Berg's avatar
Johannes Berg committed
1509
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
	if (err)
		return err;

	if (!drv->ops->change_mpath) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 *dst = NULL;
	u8 *next_hop = NULL;

	if (!info->attrs[NL80211_ATTR_MAC])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
		return -EINVAL;

	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);

Johannes Berg's avatar
Johannes Berg committed
1544
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
	if (err)
		return err;

	if (!drv->ops->add_mpath) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	u8 *dst = NULL;

	if (info->attrs[NL80211_ATTR_MAC])
		dst = nla_data(info->attrs[NL80211_ATTR_MAC]);

Johannes Berg's avatar
Johannes Berg committed
1573
	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
	if (err)
		return err;

	if (!drv->ops->del_mpath) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
	struct cfg80211_registered_device *drv;
	int err;
	struct net_device *dev;
	struct bss_parameters params;

	memset(&params, 0, sizeof(params));
	/* default to not changing parameters */
	params.use_cts_prot = -1;
	params.use_short_preamble = -1;
	params.use_short_slot_time = -1;

	if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
		params.use_cts_prot =
		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
	if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
		params.use_short_preamble =
		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
	if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
		params.use_short_slot_time =
		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);

	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
	if (err)
		return err;

	if (!drv->ops->change_bss) {
		err = -EOPNOTSUPP;
		goto out;
	}

	rtnl_lock();
	err = drv->ops->change_bss(&drv->wiphy, dev, &params);
	rtnl_unlock();

 out:
	cfg80211_put_dev(drv);
	dev_put(dev);
	return err;
}

1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
static const struct nla_policy
	reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
	[NL80211_ATTR_REG_RULE_FLAGS]		= { .type = NLA_U32 },
	[NL80211_ATTR_FREQ_RANGE_START]		= { .type = NLA_U32 },
	[NL80211_ATTR_FREQ_RANGE_END]		= { .type = NLA_U32 },
	[NL80211_ATTR_FREQ_RANGE_MAX_BW]	= { .type = NLA_U32 },
	[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]	= { .type = NLA_U32 },
	[NL80211_ATTR_POWER_RULE_MAX_EIRP]	= { .type = NLA_U32 },
};

static int parse_reg_rule(struct nlattr *tb[],
	struct ieee80211_reg_rule *reg_rule)
{
	struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
	struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;

	if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
		return -EINVAL;
	if (!tb[NL80211_ATTR_FREQ_RANGE_START])
		return -EINVAL;
	if (!tb[NL80211_ATTR_FREQ_RANGE_END])
		return -EINVAL;
	if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
		return -EINVAL;
	if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
		return -EINVAL;

	reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);

	freq_range->start_freq_khz =
		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
	freq_range->end_freq_khz =
		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
	freq_range->max_bandwidth_khz =
		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);

	power_rule->max_eirp =
		nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);

	if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
		power_rule->max_antenna_gain =
			nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);

	return 0;
}

static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
{
	int r;
	char *data = NULL;

	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
		return -EINVAL;

	data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);

#ifdef CONFIG_WIRELESS_OLD_REGULATORY
	/* We ignore world regdom requests with the old regdom setup */
	if (is_world_regdom(data))
		return -EINVAL;
#endif
	mutex_lock(&cfg80211_drv_mutex);
	r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, NULL);
	mutex_unlock(&cfg80211_drv_mutex);
	return r;
}

static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
{
	struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
	struct nlattr *nl_reg_rule;
	char *alpha2 = NULL;
	int rem_reg_rules = 0, r = 0;
	u32 num_rules = 0, rule_idx = 0, size_of_regd;
	struct ieee80211_regdomain *rd = NULL;

	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
		return -EINVAL;

	if (!info->attrs[NL80211_ATTR_REG_RULES])
		return -EINVAL;

	alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);

	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
			rem_reg_rules) {
		num_rules++;
		if (num_rules > NL80211_MAX_SUPP_REG_RULES)
			goto bad_reg;
	}

	if (!reg_is_valid_request(alpha2))
		return -EINVAL;

	size_of_regd = sizeof(struct ieee80211_regdomain) +
		(num_rules * sizeof(struct ieee80211_reg_rule));

	rd = kzalloc(size_of_regd, GFP_KERNEL);
	if (!rd)
		return -ENOMEM;

	rd->n_reg_rules = num_rules;
	rd->alpha2[0] = alpha2[0];
	rd->alpha2[1] = alpha2[1];

	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
			rem_reg_rules) {
		nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
			nla_data(nl_reg_rule), nla_len(nl_reg_rule),
			reg_rule_policy);
		r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
		if (r)
			goto bad_reg;

		rule_idx++;

		if (rule_idx > NL80211_MAX_SUPP_REG_RULES)
			goto bad_reg;
	}

	BUG_ON(rule_idx != num_rules);

	mutex_lock(&cfg80211_drv_mutex);
	r = set_regdom(rd);
	mutex_unlock(&cfg80211_drv_mutex);
	if (r)
		goto bad_reg;

	return r;

bad_reg:
	kfree(rd);
	return -EINVAL;
}

1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
static struct genl_ops nl80211_ops[] = {
	{
		.cmd = NL80211_CMD_GET_WIPHY,
		.doit = nl80211_get_wiphy,
		.dumpit = nl80211_dump_wiphy,
		.policy = nl80211_policy,
		/* can be retrieved by unprivileged users */
	},
	{
		.cmd = NL80211_CMD_SET_WIPHY,
		.doit = nl80211_set_wiphy,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_GET_INTERFACE,
		.doit = nl80211_get_interface,
		.dumpit = nl80211_dump_interface,
		.policy = nl80211_policy,
		/* can be retrieved by unprivileged users */
	},
	{
		.cmd = NL80211_CMD_SET_INTERFACE,
		.doit = nl80211_set_interface,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_NEW_INTERFACE,
		.doit = nl80211_new_interface,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_DEL_INTERFACE,
		.doit = nl80211_del_interface,
		.policy = nl80211_policy,
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_GET_KEY,
		.doit = nl80211_get_key,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_SET_KEY,
		.doit = nl80211_set_key,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_NEW_KEY,
		.doit = nl80211_new_key,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_DEL_KEY,
		.doit = nl80211_del_key,
		.policy = nl80211_policy,
1830
1831
		.flags = GENL_ADMIN_PERM,
	},
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
	{
		.cmd = NL80211_CMD_SET_BEACON,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
		.doit = nl80211_addset_beacon,
	},
	{
		.cmd = NL80211_CMD_NEW_BEACON,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
		.doit = nl80211_addset_beacon,
	},
	{
		.cmd = NL80211_CMD_DEL_BEACON,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
		.doit = nl80211_del_beacon,
	},
1850
1851
1852
	{
		.cmd = NL80211_CMD_GET_STATION,
		.doit = nl80211_get_station,
1853
		.dumpit = nl80211_dump_station,
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_SET_STATION,
		.doit = nl80211_set_station,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_NEW_STATION,
		.doit = nl80211_new_station,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_DEL_STATION,
		.doit = nl80211_del_station,
		.policy = nl80211_policy,
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_GET_MPATH,
		.doit = nl80211_get_mpath,
		.dumpit = nl80211_dump_mpath,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_SET_MPATH,
		.doit = nl80211_set_mpath,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_NEW_MPATH,
		.doit = nl80211_new_mpath,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_DEL_MPATH,
		.doit = nl80211_del_mpath,
		.policy = nl80211_policy,
1898
1899
1900
1901
1902
1903
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_SET_BSS,
		.doit = nl80211_set_bss,
		.policy = nl80211_policy,
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_SET_REG,
		.doit = nl80211_set_reg,
		.policy = nl80211_policy,
		.flags = GENL_ADMIN_PERM,
	},
	{
		.cmd = NL80211_CMD_REQ_SET_REG,
		.doit = nl80211_req_set_reg,
		.policy = nl80211_policy,
1916
1917
		.flags = GENL_ADMIN_PERM,
	},
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
};

/* multicast groups */
static struct genl_multicast_group nl80211_config_mcgrp = {
	.name = "config",
};

/* notification functions */

void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
{
	struct sk_buff *msg;

	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!msg)
		return;

	if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
		nlmsg_free(msg);
		return;
	}

	genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
}

/* initialisation/exit functions */

int nl80211_init(void)
{
	int err, i;

	err = genl_register_family(&nl80211_fam);
	if (err)
		return err;

	for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) {
		err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]);
		if (err)
			goto err_out;
	}

	err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
	if (err)
		goto err_out;

	return 0;
 err_out:
	genl_unregister_family(&nl80211_fam);
	return err;
}

void nl80211_exit(void)
{
	genl_unregister_family(&nl80211_fam);
}