nl80211.c 217 KB
Newer Older
1
2
3
/*
 * This is the new netlink-based wireless configuration interface.
 *
4
 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
5
6
7
8
9
 */

#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
10
#include <linux/slab.h>
11
12
13
14
15
16
#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>
17
#include <linux/etherdevice.h>
18
#include <net/net_namespace.h>
19
20
#include <net/genetlink.h>
#include <net/cfg80211.h>
21
#include <net/sock.h>
22
23
#include "core.h"
#include "nl80211.h"
24
#include "reg.h"
25

26
27
28
29
30
31
static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
				   struct genl_info *info,
				   struct cfg80211_crypto_settings *settings,
				   int cipher_limit);

32
33
34
35
36
static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
			    struct genl_info *info);
static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
			      struct genl_info *info);

37
38
39
40
41
42
43
/* 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,
44
	.netnsok = true,
45
46
	.pre_doit = nl80211_pre_doit,
	.post_doit = nl80211_post_doit,
47
48
};

49
/* internal helper: get rdev and dev */
50
51
52
static int get_rdev_dev_by_ifindex(struct net *netns, struct nlattr **attrs,
				   struct cfg80211_registered_device **rdev,
				   struct net_device **dev)
53
54
55
{
	int ifindex;

Johannes Berg's avatar
Johannes Berg committed
56
	if (!attrs[NL80211_ATTR_IFINDEX])
57
58
		return -EINVAL;

Johannes Berg's avatar
Johannes Berg committed
59
	ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
60
	*dev = dev_get_by_index(netns, ifindex);
61
62
63
	if (!*dev)
		return -ENODEV;

64
	*rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
65
	if (IS_ERR(*rdev)) {
66
		dev_put(*dev);
67
		return PTR_ERR(*rdev);
68
69
70
71
72
73
	}

	return 0;
}

/* policy for the attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
74
static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
75
76
	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
77
				      .len = 20-1 },
78
	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
79
	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
Sujith's avatar
Sujith committed
80
	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
81
82
83
84
	[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
	[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
	[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
85
	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
86
87
88
89

	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
90

91
92
	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
93

94
	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
95
96
97
98
99
	[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 },
100
	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
101
	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
102
103
104
105
106
107
108

	[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 },
109
110
111
112
113
	[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 },
114
	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
115
	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg's avatar
Johannes Berg committed
116
	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
117
118
119
	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
				.len = IEEE80211_MAX_MESH_ID_LEN },
	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
120

121
122
123
	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

124
125
126
	[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 },
127
128
	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
					   .len = NL80211_MAX_SUPP_RATES },
129
	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
130

131
	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
132
	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
133

134
	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
135
136
137
138

	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
			      .len = IEEE80211_MAX_DATA_LEN },
139
140
	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
141
142
143
144
145

	[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
				.len = IEEE80211_MAX_SSID_LEN },
	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
Johannes Berg's avatar
Johannes Berg committed
146
	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
147
	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
148
	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
149
150
151
	[NL80211_ATTR_STA_FLAGS2] = {
		.len = sizeof(struct nl80211_sta_flag_update),
	},
152
	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
153
154
	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
155
156
157
	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
158
	[NL80211_ATTR_PID] = { .type = NLA_U32 },
159
	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
Samuel Ortiz's avatar
Samuel Ortiz committed
160
161
	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
				 .len = WLAN_PMKID_LEN },
162
163
	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
164
	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
165
166
167
	[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
				 .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
Kalle Valo's avatar
Kalle Valo committed
168
	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
169
	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
170
	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
171
	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
172
173
	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
174
	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
175
176
	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
177
	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
178
	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
179
	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
180
	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
181
	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
182
	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
183
	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
184
	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
185
	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
186
187
188
189
	[NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
					 .len = IEEE80211_MAX_DATA_LEN },
	[NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
					 .len = IEEE80211_MAX_DATA_LEN },
190
	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
191
	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
192
	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
193
194
195
196
197
	[NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
	[NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
	[NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
198
	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
199
200
	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
				      .len = IEEE80211_MAX_DATA_LEN },
201
	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
202
203
204
205
	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
		.len = NL80211_HT_CAPABILITY_LEN
	},
206
	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
207
	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
208
	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
209
210
};

211
/* policy for the key attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
212
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
Johannes Berg's avatar
Johannes Berg committed
213
	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
214
215
	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
216
	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
217
218
	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
219
	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
220
221
222
223
224
225
226
227
	[NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
};

/* policy for the key default flags */
static const struct nla_policy
nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
	[NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
228
229
};

230
231
232
233
234
235
236
/* policy for WoWLAN attributes */
static const struct nla_policy
nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
	[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
237
238
239
240
	[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
	[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
241
242
};

243
244
245
246
247
248
249
250
/* policy for GTK rekey offload attributes */
static const struct nla_policy
nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
	[NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
	[NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
	[NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
};

251
252
253
254
255
256
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
	[NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
						 .len = IEEE80211_MAX_SSID_LEN },
};

257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
/* ifidx get helper */
static int nl80211_get_ifidx(struct netlink_callback *cb)
{
	int res;

	res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
			  nl80211_fam.attrbuf, nl80211_fam.maxattr,
			  nl80211_policy);
	if (res)
		return res;

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

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

277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
				       struct netlink_callback *cb,
				       struct cfg80211_registered_device **rdev,
				       struct net_device **dev)
{
	int ifidx = cb->args[0];
	int err;

	if (!ifidx)
		ifidx = nl80211_get_ifidx(cb);
	if (ifidx < 0)
		return ifidx;

	cb->args[0] = ifidx;

	rtnl_lock();

	*dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
	if (!*dev) {
		err = -ENODEV;
		goto out_rtnl;
	}

	*rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
301
302
	if (IS_ERR(*rdev)) {
		err = PTR_ERR(*rdev);
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
		goto out_rtnl;
	}

	return 0;
 out_rtnl:
	rtnl_unlock();
	return err;
}

static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
{
	cfg80211_unlock_rdev(rdev);
	rtnl_unlock();
}

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
/* IE validation */
static bool is_valid_ie_attr(const struct nlattr *attr)
{
	const u8 *pos;
	int len;

	if (!attr)
		return true;

	pos = nla_data(attr);
	len = nla_len(attr);

	while (len) {
		u8 elemlen;

		if (len < 2)
			return false;
		len -= 2;

		elemlen = pos[1];
		if (elemlen > len)
			return false;

		len -= elemlen;
		pos += 2 + elemlen;
	}

	return true;
}

348
349
350
351
352
353
354
355
/* 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);
}

356
357
358
static int nl80211_msg_put_channel(struct sk_buff *msg,
				   struct ieee80211_channel *chan)
{
359
360
361
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
362

363
364
365
366
367
368
369
370
371
372
373
374
	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
		goto nla_put_failure;
	if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
		goto nla_put_failure;
	if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
		goto nla_put_failure;
	if ((chan->flags & IEEE80211_CHAN_RADAR) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
		goto nla_put_failure;
375

376
377
378
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
379
380
381
382
383
384
385

	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

386
387
/* netlink command implementations */

388
389
390
struct key_parse {
	struct key_params p;
	int idx;
391
	int type;
392
	bool def, defmgmt;
393
	bool def_uni, def_multi;
394
395
396
397
398
399
400
401
402
403
404
405
406
};

static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
{
	struct nlattr *tb[NL80211_KEY_MAX + 1];
	int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
				   nl80211_key_policy);
	if (err)
		return err;

	k->def = !!tb[NL80211_KEY_DEFAULT];
	k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];

407
408
409
410
411
412
413
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
	if (tb[NL80211_KEY_IDX])
		k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);

	if (tb[NL80211_KEY_DATA]) {
		k->p.key = nla_data(tb[NL80211_KEY_DATA]);
		k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
	}

	if (tb[NL80211_KEY_SEQ]) {
		k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
		k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
	}

	if (tb[NL80211_KEY_CIPHER])
		k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);

430
431
432
433
434
435
	if (tb[NL80211_KEY_TYPE]) {
		k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
			return -EINVAL;
	}

436
437
	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
438
439
440
		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
441
442
443
444
445
446
447
		if (err)
			return err;

		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
	}

448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
	return 0;
}

static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
{
	if (info->attrs[NL80211_ATTR_KEY_DATA]) {
		k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
		k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
	}

	if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
		k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
		k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
	}

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

	if (info->attrs[NL80211_ATTR_KEY_CIPHER])
		k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);

	k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
	k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];

472
473
474
475
476
477
478
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

479
480
481
482
483
484
	if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
		k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
		if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
			return -EINVAL;
	}

485
486
487
488
489
490
491
492
493
494
495
496
497
	if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
		int err = nla_parse_nested(
				kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
				nl80211_key_default_policy);
		if (err)
			return err;

		k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
		k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
	}

498
499
500
501
502
503
504
505
506
	return 0;
}

static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
{
	int err;

	memset(k, 0, sizeof(*k));
	k->idx = -1;
507
	k->type = -1;
508
509
510
511
512
513
514
515
516
517
518
519

	if (info->attrs[NL80211_ATTR_KEY])
		err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
	else
		err = nl80211_parse_key_old(info, k);

	if (err)
		return err;

	if (k->def && k->defmgmt)
		return -EINVAL;

520
521
522
523
524
	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
	if (k->idx != -1) {
		if (k->defmgmt) {
			if (k->idx < 4 || k->idx > 5)
				return -EINVAL;
		} else if (k->def) {
			if (k->idx < 0 || k->idx > 3)
				return -EINVAL;
		} else {
			if (k->idx < 0 || k->idx > 5)
				return -EINVAL;
		}
	}

	return 0;
}

Johannes Berg's avatar
Johannes Berg committed
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
		       struct nlattr *keys)
{
	struct key_parse parse;
	struct nlattr *key;
	struct cfg80211_cached_keys *result;
	int rem, err, def = 0;

	result = kzalloc(sizeof(*result), GFP_KERNEL);
	if (!result)
		return ERR_PTR(-ENOMEM);

	result->def = -1;
	result->defmgmt = -1;

	nla_for_each_nested(key, keys, rem) {
		memset(&parse, 0, sizeof(parse));
		parse.idx = -1;

		err = nl80211_parse_key_new(key, &parse);
		if (err)
			goto error;
		err = -EINVAL;
		if (!parse.p.key)
			goto error;
		if (parse.idx < 0 || parse.idx > 4)
			goto error;
		if (parse.def) {
			if (def)
				goto error;
			def = 1;
			result->def = parse.idx;
574
575
			if (!parse.def_uni || !parse.def_multi)
				goto error;
Johannes Berg's avatar
Johannes Berg committed
576
577
578
		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
579
						     parse.idx, false, NULL);
Johannes Berg's avatar
Johannes Berg committed
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
		if (err)
			goto error;
		result->params[parse.idx].cipher = parse.p.cipher;
		result->params[parse.idx].key_len = parse.p.key_len;
		result->params[parse.idx].key = result->data[parse.idx];
		memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
	}

	return result;
 error:
	kfree(result);
	return ERR_PTR(err);
}

static int nl80211_key_allowed(struct wireless_dev *wdev)
{
	ASSERT_WDEV_LOCK(wdev);

	switch (wdev->iftype) {
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
601
	case NL80211_IFTYPE_P2P_GO:
602
	case NL80211_IFTYPE_MESH_POINT:
Johannes Berg's avatar
Johannes Berg committed
603
604
605
606
607
608
		break;
	case NL80211_IFTYPE_ADHOC:
		if (!wdev->current_bss)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
609
	case NL80211_IFTYPE_P2P_CLIENT:
Johannes Berg's avatar
Johannes Berg committed
610
611
612
613
614
615
616
617
618
619
		if (wdev->sme_state != CFG80211_SME_CONNECTED)
			return -ENOLINK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

620
621
622
623
624
625
626
627
628
629
static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
{
	struct nlattr *nl_modes = nla_nest_start(msg, attr);
	int i;

	if (!nl_modes)
		goto nla_put_failure;

	i = 0;
	while (ifmodes) {
630
631
		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
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
		ifmodes >>= 1;
		i++;
	}

	nla_nest_end(msg, nl_modes);
	return 0;

nla_put_failure:
	return -ENOBUFS;
}

static int nl80211_put_iface_combinations(struct wiphy *wiphy,
					  struct sk_buff *msg)
{
	struct nlattr *nl_combis;
	int i, j;

	nl_combis = nla_nest_start(msg,
				NL80211_ATTR_INTERFACE_COMBINATIONS);
	if (!nl_combis)
		goto nla_put_failure;

	for (i = 0; i < wiphy->n_iface_combinations; i++) {
		const struct ieee80211_iface_combination *c;
		struct nlattr *nl_combi, *nl_limits;

		c = &wiphy->iface_combinations[i];

		nl_combi = nla_nest_start(msg, i + 1);
		if (!nl_combi)
			goto nla_put_failure;

		nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
		if (!nl_limits)
			goto nla_put_failure;

		for (j = 0; j < c->n_limits; j++) {
			struct nlattr *nl_limit;

			nl_limit = nla_nest_start(msg, j + 1);
			if (!nl_limit)
				goto nla_put_failure;
674
675
676
			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
677
678
679
680
681
682
683
684
			if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
						c->limits[j].types))
				goto nla_put_failure;
			nla_nest_end(msg, nl_limit);
		}

		nla_nest_end(msg, nl_limits);

685
686
687
688
689
690
691
692
		if (c->beacon_int_infra_match &&
		    nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
			goto nla_put_failure;
		if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
				c->num_different_channels) ||
		    nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
				c->max_interfaces))
			goto nla_put_failure;
693
694
695
696
697
698
699
700
701
702
703

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

704
705
706
707
static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
			      struct cfg80211_registered_device *dev)
{
	void *hdr;
708
709
710
	struct nlattr *nl_bands, *nl_band;
	struct nlattr *nl_freqs, *nl_freq;
	struct nlattr *nl_rates, *nl_rate;
711
	struct nlattr *nl_cmds;
712
713
714
715
	enum ieee80211_band band;
	struct ieee80211_channel *chan;
	struct ieee80211_rate *rate;
	int i;
716
717
	const struct ieee80211_txrx_stypes *mgmt_stypes =
				dev->wiphy.mgmt_stypes;
718
719
720
721
722

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

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
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
	if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
	    nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
	    nla_put_u32(msg, NL80211_ATTR_GENERATION,
			cfg80211_rdev_list_generation) ||
	    nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
		       dev->wiphy.retry_short) ||
	    nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
		       dev->wiphy.retry_long) ||
	    nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
			dev->wiphy.frag_threshold) ||
	    nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
			dev->wiphy.rts_threshold) ||
	    nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
		       dev->wiphy.coverage_class) ||
	    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
		       dev->wiphy.max_scan_ssids) ||
	    nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
		       dev->wiphy.max_sched_scan_ssids) ||
	    nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
			dev->wiphy.max_scan_ie_len) ||
	    nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
			dev->wiphy.max_sched_scan_ie_len) ||
	    nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
		       dev->wiphy.max_match_sets))
		goto nla_put_failure;

	if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
	    nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
		goto nla_put_failure;
	if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
	    nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
		goto nla_put_failure;
	if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
	    nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
		goto nla_put_failure;
	if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
	    nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
		goto nla_put_failure;
	if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
	    nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
		goto nla_put_failure;
	if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
	    nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
		goto nla_put_failure;

	if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
		    sizeof(u32) * dev->wiphy.n_cipher_suites,
		    dev->wiphy.cipher_suites))
		goto nla_put_failure;

	if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
		       dev->wiphy.max_num_pmkids))
		goto nla_put_failure;

	if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
	    nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
		goto nla_put_failure;

	if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
			dev->wiphy.available_antennas_tx) ||
	    nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
			dev->wiphy.available_antennas_rx))
		goto nla_put_failure;

	if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
	    nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
			dev->wiphy.probe_resp_offload))
		goto nla_put_failure;
791

792
793
	if ((dev->wiphy.available_antennas_tx ||
	     dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
794
795
796
797
		u32 tx_ant = 0, rx_ant = 0;
		int res;
		res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
		if (!res) {
798
799
800
801
802
			if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
					tx_ant) ||
			    nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
					rx_ant))
				goto nla_put_failure;
803
804
805
		}
	}

806
807
	if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
				dev->wiphy.interface_modes))
808
809
		goto nla_put_failure;

810
811
812
813
814
815
816
817
818
819
820
821
	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;

822
		/* add HT info */
823
824
825
826
827
828
829
830
831
832
833
		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)))
			goto nla_put_failure;
834

835
836
837
838
839
840
841
842
843
844
845
		/* 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];
846
847
848

			if (nl80211_msg_put_channel(msg, chan))
				goto nla_put_failure;
849

850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
			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];
866
867
868
869
870
871
872
			if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
					rate->bitrate))
				goto nla_put_failure;
			if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
			    nla_put_flag(msg,
					 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
				goto nla_put_failure;
873
874
875
876
877
878
879
880
881
882

			nla_nest_end(msg, nl_rate);
		}

		nla_nest_end(msg, nl_rates);

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

883
884
885
886
887
888
889
890
891
	nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
	if (!nl_cmds)
		goto nla_put_failure;

	i = 0;
#define CMD(op, n)						\
	 do {							\
		if (dev->ops->op) {				\
			i++;					\
892
893
			if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
				goto nla_put_failure;		\
894
895
896
897
898
899
		}						\
	} while (0)

	CMD(add_virtual_intf, NEW_INTERFACE);
	CMD(change_virtual_intf, SET_INTERFACE);
	CMD(add_key, NEW_KEY);
900
	CMD(start_ap, START_AP);
901
902
	CMD(add_station, NEW_STATION);
	CMD(add_mpath, NEW_MPATH);
903
	CMD(update_mesh_config, SET_MESH_CONFIG);
904
	CMD(change_bss, SET_BSS);
905
906
907
908
	CMD(auth, AUTHENTICATE);
	CMD(assoc, ASSOCIATE);
	CMD(deauth, DEAUTHENTICATE);
	CMD(disassoc, DISASSOCIATE);
Johannes Berg's avatar
Johannes Berg committed
909
	CMD(join_ibss, JOIN_IBSS);
910
	CMD(join_mesh, JOIN_MESH);
Samuel Ortiz's avatar
Samuel Ortiz committed
911
912
913
	CMD(set_pmksa, SET_PMKSA);
	CMD(del_pmksa, DEL_PMKSA);
	CMD(flush_pmksa, FLUSH_PMKSA);
914
915
	if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
		CMD(remain_on_channel, REMAIN_ON_CHANNEL);
916
	CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
917
	CMD(mgmt_tx, FRAME);
918
	CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
919
	if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
920
		i++;
921
922
		if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
			goto nla_put_failure;
923
	}
924
	CMD(set_channel, SET_CHANNEL);
925
	CMD(set_wds_peer, SET_WDS_PEER);
926
927
928
929
	if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
		CMD(tdls_mgmt, TDLS_MGMT);
		CMD(tdls_oper, TDLS_OPER);
	}
930
931
	if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
		CMD(sched_scan_start, START_SCHED_SCAN);
932
	CMD(probe_client, PROBE_CLIENT);
933
	CMD(set_noack_map, SET_NOACK_MAP);
934
935
	if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
		i++;
936
937
		if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
			goto nla_put_failure;
938
	}
939

940
941
942
943
#ifdef CONFIG_NL80211_TESTMODE
	CMD(testmode_cmd, TESTMODE);
#endif

944
#undef CMD
945

946
	if (dev->ops->connect || dev->ops->auth) {
947
		i++;
948
949
		if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
			goto nla_put_failure;
950
951
	}

952
	if (dev->ops->disconnect || dev->ops->deauth) {
953
		i++;
954
955
		if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
			goto nla_put_failure;
956
957
	}

958
959
	nla_nest_end(msg, nl_cmds);

960
	if (dev->ops->remain_on_channel &&
961
962
963
964
	    (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
	    nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
			dev->wiphy.max_remain_on_channel_duration))
		goto nla_put_failure;
965

966
967
968
	if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
	    nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
		goto nla_put_failure;
969

970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
	if (mgmt_stypes) {
		u16 stypes;
		struct nlattr *nl_ftypes, *nl_ifs;
		enum nl80211_iftype ift;

		nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
		if (!nl_ifs)
			goto nla_put_failure;

		for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
			nl_ftypes = nla_nest_start(msg, ift);
			if (!nl_ftypes)
				goto nla_put_failure;
			i = 0;
			stypes = mgmt_stypes[ift].tx;
			while (stypes) {
986
987
988
989
				if ((stypes & 1) &&
				    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
						(i << 4) | IEEE80211_FTYPE_MGMT))
					goto nla_put_failure;
990
991
992
993
994
995
				stypes >>= 1;
				i++;
			}
			nla_nest_end(msg, nl_ftypes);
		}

Johannes Berg's avatar
Johannes Berg committed
996
997
		nla_nest_end(msg, nl_ifs);

998
999
1000
		nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
		if (!nl_ifs)
			goto nla_put_failure;