nl80211.c 259 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
#include <net/inet_connection_sock.h>
23 24
#include "core.h"
#include "nl80211.h"
25
#include "reg.h"
26
#include "rdev-ops.h"
27

28 29 30 31 32
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
				   struct genl_info *info,
				   struct cfg80211_crypto_settings *settings,
				   int cipher_limit);

33 34 35 36 37
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);

38 39 40 41 42 43 44
/* 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,
45
	.netnsok = true,
46 47
	.pre_doit = nl80211_pre_doit,
	.post_doit = nl80211_post_doit,
48 49
};

50 51 52
/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53
{
54 55 56 57 58 59 60
	struct cfg80211_registered_device *rdev;
	struct wireless_dev *result = NULL;
	bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
	bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
	u64 wdev_id;
	int wiphy_idx = -1;
	int ifidx = -1;
61

62
	assert_cfg80211_lock();
63

64 65
	if (!have_ifidx && !have_wdev_id)
		return ERR_PTR(-EINVAL);
66

67 68 69 70 71
	if (have_ifidx)
		ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
	if (have_wdev_id) {
		wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
		wiphy_idx = wdev_id >> 32;
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 99 100 101 102 103
	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
		struct wireless_dev *wdev;

		if (wiphy_net(&rdev->wiphy) != netns)
			continue;

		if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
			continue;

		mutex_lock(&rdev->devlist_mtx);
		list_for_each_entry(wdev, &rdev->wdev_list, list) {
			if (have_ifidx && wdev->netdev &&
			    wdev->netdev->ifindex == ifidx) {
				result = wdev;
				break;
			}
			if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
				result = wdev;
				break;
			}
		}
		mutex_unlock(&rdev->devlist_mtx);

		if (result)
			break;
	}

	if (result)
		return result;
	return ERR_PTR(-ENODEV);
104 105
}

106
static struct cfg80211_registered_device *
107
__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
108
{
109 110
	struct cfg80211_registered_device *rdev = NULL, *tmp;
	struct net_device *netdev;
111 112 113

	assert_cfg80211_lock();

114
	if (!attrs[NL80211_ATTR_WIPHY] &&
115 116
	    !attrs[NL80211_ATTR_IFINDEX] &&
	    !attrs[NL80211_ATTR_WDEV])
117 118
		return ERR_PTR(-EINVAL);

119
	if (attrs[NL80211_ATTR_WIPHY])
120
		rdev = cfg80211_rdev_by_wiphy_idx(
121
				nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
122

123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
	if (attrs[NL80211_ATTR_WDEV]) {
		u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
		struct wireless_dev *wdev;
		bool found = false;

		tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
		if (tmp) {
			/* make sure wdev exists */
			mutex_lock(&tmp->devlist_mtx);
			list_for_each_entry(wdev, &tmp->wdev_list, list) {
				if (wdev->identifier != (u32)wdev_id)
					continue;
				found = true;
				break;
			}
			mutex_unlock(&tmp->devlist_mtx);

			if (!found)
				tmp = NULL;

			if (rdev && tmp != rdev)
				return ERR_PTR(-EINVAL);
			rdev = tmp;
		}
	}

149 150
	if (attrs[NL80211_ATTR_IFINDEX]) {
		int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
Johannes Berg's avatar
Johannes Berg committed
151
		netdev = dev_get_by_index(netns, ifindex);
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169
		if (netdev) {
			if (netdev->ieee80211_ptr)
				tmp = wiphy_to_dev(
						netdev->ieee80211_ptr->wiphy);
			else
				tmp = NULL;

			dev_put(netdev);

			/* not wireless device -- return error */
			if (!tmp)
				return ERR_PTR(-EINVAL);

			/* mismatch -- return error */
			if (rdev && tmp != rdev)
				return ERR_PTR(-EINVAL);

			rdev = tmp;
170 171 172
		}
	}

Johannes Berg's avatar
Johannes Berg committed
173 174
	if (!rdev)
		return ERR_PTR(-ENODEV);
175

Johannes Berg's avatar
Johannes Berg committed
176 177 178 179
	if (netns != wiphy_net(&rdev->wiphy))
		return ERR_PTR(-ENODEV);

	return rdev;
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
}

/*
 * This function returns a pointer to the driver
 * that the genl_info item that is passed refers to.
 * If successful, it returns non-NULL and also locks
 * the driver's mutex!
 *
 * This means that you need to call cfg80211_unlock_rdev()
 * before being allowed to acquire &cfg80211_mutex!
 *
 * This is necessary because we need to lock the global
 * mutex to get an item off the list safely, and then
 * we lock the rdev mutex so it doesn't go away under us.
 *
 * We don't want to keep cfg80211_mutex locked
 * for all the time in order to allow requests on
 * other interfaces to go through at the same time.
 *
 * The result of this can be a PTR_ERR and hence must
 * be checked with IS_ERR() for errors.
 */
static struct cfg80211_registered_device *
Johannes Berg's avatar
Johannes Berg committed
203
cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
204 205 206 207
{
	struct cfg80211_registered_device *rdev;

	mutex_lock(&cfg80211_mutex);
208
	rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
209 210 211 212 213 214 215 216 217 218 219 220

	/* if it is not an error we grab the lock on
	 * it to assure it won't be going away while
	 * we operate on it */
	if (!IS_ERR(rdev))
		mutex_lock(&rdev->mtx);

	mutex_unlock(&cfg80211_mutex);

	return rdev;
}

221
/* policy for the attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
222
static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
223 224
	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
225
				      .len = 20-1 },
226
	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
227

228
	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
Sujith's avatar
Sujith committed
229
	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
230 231 232 233
	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },

234 235 236 237
	[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 },
238
	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
239 240 241 242

	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
243

244 245
	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
246

247
	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
248 249 250 251 252
	[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 },
253
	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
254
	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
255 256 257 258 259 260 261

	[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 },
262 263 264 265 266
	[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 },
267
	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
268
	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg's avatar
Johannes Berg committed
269
	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
270
	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
271
				   .len = IEEE80211_MAX_MESH_ID_LEN },
272
	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
273

274 275 276
	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

277 278 279
	[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 },
280 281
	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
					   .len = NL80211_MAX_SUPP_RATES },
282
	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
283

284
	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
285
	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
286

287
	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
288 289 290 291

	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
			      .len = IEEE80211_MAX_DATA_LEN },
292 293
	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
294 295 296 297 298

	[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
299
	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
300
	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
301
	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
302 303 304
	[NL80211_ATTR_STA_FLAGS2] = {
		.len = sizeof(struct nl80211_sta_flag_update),
	},
305
	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
306 307
	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
308 309 310
	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
311
	[NL80211_ATTR_PID] = { .type = NLA_U32 },
312
	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
Samuel Ortiz's avatar
Samuel Ortiz committed
313 314
	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
				 .len = WLAN_PMKID_LEN },
315 316
	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
317
	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
318 319 320
	[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
321
	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
322
	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
323
	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
324
	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
325 326
	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
327
	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
328 329
	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
330
	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
331
	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
332
	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
333
	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
334
	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
335
	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
336
	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
337
	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
338
	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
339 340 341 342
	[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 },
343
	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
344
	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
345
	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
346 347 348 349 350
	[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 },
351
	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
352 353
	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
				      .len = IEEE80211_MAX_DATA_LEN },
354
	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
355 356 357 358
	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
		.len = NL80211_HT_CAPABILITY_LEN
	},
359
	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
360
	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
361
	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
362
	[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
363
	[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
364
	[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
365
	[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
366
	[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
367 368
	[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
	[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
369 370
	[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
	[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
371 372
};

373
/* policy for the key attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
374
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
Johannes Berg's avatar
Johannes Berg committed
375
	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
376 377
	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
378
	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
379 380
	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
381
	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
382 383 384 385 386 387 388 389
	[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 },
390 391
};

392 393 394 395 396 397 398
/* 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 },
399 400 401 402
	[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 },
403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422
	[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
};

static const struct nla_policy
nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
	[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
	[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
	[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
		.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
	},
	[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
		.len = sizeof(struct nl80211_wowlan_tcp_data_token)
	},
	[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
	[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
	[NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
423 424
};

425 426 427 428 429 430 431 432
/* 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 },
};

433 434
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
435
	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
436
						 .len = IEEE80211_MAX_SSID_LEN },
437
	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
438 439
};

440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
/* 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;
}

460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483
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);
484 485
	if (IS_ERR(*rdev)) {
		err = PTR_ERR(*rdev);
486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
		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();
}

501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530
/* 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;
}

531
/* message building helper */
532
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
533 534 535
				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
536
	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
537 538
}

539 540 541
static int nl80211_msg_put_channel(struct sk_buff *msg,
				   struct ieee80211_channel *chan)
{
542 543 544
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
545

546 547 548 549 550 551 552 553 554 555 556 557
	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;
558

559 560 561
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
562 563 564 565 566 567 568

	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

569 570
/* netlink command implementations */

571 572 573
struct key_parse {
	struct key_params p;
	int idx;
574
	int type;
575
	bool def, defmgmt;
576
	bool def_uni, def_multi;
577 578 579 580 581 582 583 584 585 586 587 588 589
};

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];

590 591 592 593 594 595 596
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612
	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]);

613 614 615 616 617 618
	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;
	}

619 620
	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
621 622 623
		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
624 625 626 627 628 629 630
		if (err)
			return err;

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

631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654
	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];

655 656 657 658 659 660 661
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

662 663 664 665 666 667
	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;
	}

668 669 670 671 672 673 674 675 676 677 678 679 680
	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];
	}

681 682 683 684 685 686 687 688 689
	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;
690
	k->type = -1;
691 692 693 694 695 696 697 698 699 700 701 702

	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;

703 704 705 706 707
	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723
	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
724 725
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
726
		       struct nlattr *keys, bool *no_ht)
Johannes Berg's avatar
Johannes Berg committed
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
{
	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;
757 758
			if (!parse.def_uni || !parse.def_multi)
				goto error;
Johannes Berg's avatar
Johannes Berg committed
759 760 761
		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
762
						     parse.idx, false, NULL);
Johannes Berg's avatar
Johannes Berg committed
763 764 765 766 767 768
		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);
769 770 771 772 773 774

		if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
		    parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
			if (no_ht)
				*no_ht = true;
		}
Johannes Berg's avatar
Johannes Berg committed
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
	}

	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:
790
	case NL80211_IFTYPE_P2P_GO:
791
	case NL80211_IFTYPE_MESH_POINT:
Johannes Berg's avatar
Johannes Berg committed
792 793 794 795 796 797
		break;
	case NL80211_IFTYPE_ADHOC:
		if (!wdev->current_bss)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
798
	case NL80211_IFTYPE_P2P_CLIENT:
Johannes Berg's avatar
Johannes Berg committed
799 800 801 802 803 804 805 806 807 808
		if (wdev->sme_state != CFG80211_SME_CONNECTED)
			return -ENOLINK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

809 810 811 812 813 814 815 816 817 818
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) {
819 820
		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
		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;
863 864 865
			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
866 867 868 869 870 871 872 873
			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);

874 875 876 877 878 879 880 881
		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;
882 883 884
		if (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
				c->radar_detect_widths))
			goto nla_put_failure;
885 886 887 888 889 890 891 892 893 894 895

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
#ifdef CONFIG_PM
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
	struct nlattr *nl_tcp;

	if (!tcp)
		return 0;

	nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
	if (!nl_tcp)
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
			tcp->data_payload_max))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
			tcp->data_payload_max))
		return -ENOBUFS;

	if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
		return -ENOBUFS;

	if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
				sizeof(*tcp->tok), tcp->tok))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
			tcp->data_interval_max))
		return -ENOBUFS;

	if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
			tcp->wake_payload_max))
		return -ENOBUFS;

	nla_nest_end(msg, nl_tcp);
	return 0;
}
#endif

938
static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
939 940 941
			      struct cfg80211_registered_device *dev)
{
	void *hdr;
942 943 944
	struct nlattr *nl_bands, *nl_band;
	struct nlattr *nl_freqs, *nl_freq;
	struct nlattr *nl_rates, *nl_rate;
945
	struct nlattr *nl_cmds;
946 947 948 949
	enum ieee80211_band band;
	struct ieee80211_channel *chan;
	struct ieee80211_rate *rate;
	int i;
950 951
	const struct ieee80211_txrx_stypes *mgmt_stypes =
				dev->wiphy.mgmt_stypes;
952

953
	hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
954 955 956
	if (!hdr)
		return -1;

957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024
	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;
1025

1026 1027
	if ((dev->wiphy.available_antennas_tx ||
	     dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
1028 1029
		u32 tx_ant = 0, rx_ant = 0;
		int res;
1030
		res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1031
		if (!res) {
1032 1033 1034 1035 1036
			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;
1037 1038 1039
		}
	}

1040 1041
	if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
				dev->wiphy.interface_modes))
1042 1043
		goto nla_put_failure;

1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
	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;

1056
		/* add HT info */
1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
		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;
1068

1069 1070 1071 1072 1073 1074 1075 1076 1077
		/* add VHT info */
		if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
		    (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
			     sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
			     &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
		     nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
				 dev->wiphy.bands[band]->vht_cap.cap)))
			goto nla_put_failure;

1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
		/* 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];
1089 1090 1091

			if (nl80211_msg_put_channel(msg, chan))
				goto nla_put_failure;
1092

1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
			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];
1109 1110 1111 1112 1113 1114 1115
			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;
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125

			nla_nest_end(msg, nl_rate);
		}

		nla_nest_end(msg, nl_rates);

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

1126 1127 1128 1129 1130 1131 1132 1133 1134
	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++;					\
1135 1136
			if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
				goto nla_put_failure;		\
1137 1138 1139 1140 1141 1142
		}						\
	} while (0)

	CMD(add_virtual_intf, NEW_INTERFACE);
	CMD(change_virtual_intf, SET_INTERFACE);
	CMD(add_key, NEW_KEY);
1143
	CMD(start_ap, START_AP);
1144 1145
	CMD(add_station, NEW_STATION);
	CMD(add_mpath, NEW_MPATH);
1146
	CMD(update_mesh_config, SET_MESH_CONFIG);
1147
	CMD(change_bss, SET_BSS);
1148 1149 1150 1151
	CMD(auth, AUTHENTICATE);
	CMD(assoc, ASSOCIATE);
	CMD(deauth, DEAUTHENTICATE);
	CMD(disassoc, DISASSOCIATE);
Johannes Berg's avatar
Johannes Berg committed
1152
	CMD(join_ibss, JOIN_IBSS);
1153
	CMD(join_mesh, JOIN_MESH);
Samuel Ortiz's avatar
Samuel Ortiz committed
1154 1155 1156
	CMD(set_pmksa, SET_PMKSA);
	CMD(del_pmksa, DEL_PMKSA);
	CMD(flush_pmksa, FLUSH_PMKSA);
1157 1158
	if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
		CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1159
	CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1160
	CMD(mgmt_tx, FRAME);
1161
	CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1162
	if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1163
		i++;
1164 1165
		if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
			goto nla_put_failure;
1166
	}
1167
	if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1168
	    dev->ops->join_mesh) {
1169 1170 1171 1172
		i++;
		if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
			goto nla_put_failure;
	}
1173
	CMD(set_wds_peer, SET_WDS_PEER);
1174 1175 1176 1177
	if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
		CMD(tdls_mgmt, TDLS_MGMT);
		CMD(tdls_oper, TDLS_OPER);
	}
1178 1179
	if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
		CMD(sched_scan_start, START_SCHED_SCAN);
1180
	CMD(probe_client, PROBE_CLIENT);
1181
	CMD(set_noack_map, SET_NOACK_MAP);
1182 1183
	if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
		i++;
1184 1185
		if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
			goto nla_put_failure;
1186
	}
1187
	CMD(start_p2p_device, START_P2P_DEVICE);
1188
	CMD(set_mcast_rate, SET_MCAST_RATE);
1189

1190 1191 1192 1193
#ifdef CONFIG_NL80211_TESTMODE
	CMD(testmode_cmd, TESTMODE);
#endif

1194
#undef CMD
1195

1196
	if (dev->ops->connect || dev->ops->auth) {
1197
		i++;
1198 1199
		if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
			goto nla_put_failure;
1200 1201
	}

1202
	if (dev->ops->disconnect || dev->ops->deauth) {
1203
		i++;
1204 1205
		if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
			goto nla_put_failure;
1206 1207
	}

1208 1209
	nla_nest_end(msg, nl_cmds);

1210
	if (dev->ops->remain_on_channel &&
1211 1212 1213 1214
	    (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;
1215

1216 1217 1218
	if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
	    nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
		goto nla_put_failure;
1219

1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235
	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) {
1236 1237 1238 1239
				if ((stypes & 1) &&
				    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
						(i << 4) | IEEE80211_FTYPE_MGMT))
					goto nla_put_failure;
1240 1241 1242 1243 1244 1245
				stypes >>= 1;
				i++;
			}
			nla_nest_end(msg, nl_ftypes);
		}

Johannes Berg's avatar
Johannes Berg committed
1246 1247
		nla_nest_end(msg, nl_ifs);

1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
		nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_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].rx;
			while (stypes) {
1259 1260 1261 1262
				if ((stypes & 1) &&
				    nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
						(i << 4) | IEEE80211_FTYPE_MGMT))
					goto nla_put_failure;
1263 1264 1265 1266 1267 1268 1269 1270
				stypes >>= 1;
				i++;
			}
			nla_nest_end(msg, nl_ftypes);
		}
		nla_nest_end(msg, nl_ifs);
	}

1271
#ifdef CONFIG_PM
1272 1273 1274 1275 1276 1277 1278 1279
	if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
		struct nlattr *nl_wowlan;

		nl_wowlan = nla_nest_start(msg,
				NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
		if (!nl_wowlan)
			goto nla_put_failure;

1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296
		if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
		    ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
		     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
		    goto nla_put_failure;
1297 1298 1299 1300 1301 1302 1303
		if (dev->wiphy.wowlan.n_patterns) {
			struct nl80211_wowlan_pattern_support pat = {
				.max_patterns = dev->wiphy.wowlan.n_patterns,
				.min_pattern_len =
					dev->wiphy.wowlan.pattern_min_len,
				.max_pattern_len =
					dev->wiphy.wowlan.pattern_max_len,
1304 1305
				.max_pkt_offset =
					dev->wiphy.wowlan.max_pkt_offset,
1306
			};
1307 1308 1309
			if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
				    sizeof(pat), &pat))
				goto nla_put_failure;
1310 1311
		}

1312 1313 1314
		if (nl80211_send_wowlan_tcp_caps(dev, msg))
			goto nla_put_failure;

1315 1316
		nla_nest_end(msg, nl_wowlan);
	}
1317
#endif
1318

1319 1320 1321 1322 1323 1324 1325
	if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
				dev->wiphy.software_iftypes))
		goto nla_put_failure;

	if (nl80211_put_iface_combinations(&dev->wiphy, msg))
		goto nla_put_failure;

1326 1327 1328 1329
	if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
	    nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
			dev->wiphy.ap_sme_capa))
		goto nla_put_failure;
1330