nl80211.c 339 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
 * Copyright 2013-2014  Intel Mobile Communications GmbH
6 7 8 9 10
 */

#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
11
#include <linux/slab.h>
12 13 14 15 16 17
#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>
18
#include <linux/etherdevice.h>
19
#include <net/net_namespace.h>
20 21
#include <net/genetlink.h>
#include <net/cfg80211.h>
22
#include <net/sock.h>
23
#include <net/inet_connection_sock.h>
24 25
#include "core.h"
#include "nl80211.h"
26
#include "reg.h"
27
#include "rdev-ops.h"
28

29 30 31 32 33
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
				   struct genl_info *info,
				   struct cfg80211_crypto_settings *settings,
				   int cipher_limit);

34
static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35
			    struct genl_info *info);
36
static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 38
			      struct genl_info *info);

39 40
/* the netlink family */
static struct genl_family nl80211_fam = {
41 42 43 44
	.id = GENL_ID_GENERATE,		/* don't bother with a hardcoded ID */
	.name = NL80211_GENL_NAME,	/* have users key off the name instead */
	.hdrsize = 0,			/* no private header */
	.version = 1,			/* no particular meaning now */
45
	.maxattr = NL80211_ATTR_MAX,
46
	.netnsok = true,
47 48
	.pre_doit = nl80211_pre_doit,
	.post_doit = nl80211_post_doit,
49 50
};

51 52 53 54 55 56
/* multicast groups */
enum nl80211_multicast_groups {
	NL80211_MCGRP_CONFIG,
	NL80211_MCGRP_SCAN,
	NL80211_MCGRP_REGULATORY,
	NL80211_MCGRP_MLME,
57
	NL80211_MCGRP_VENDOR,
58 59 60 61
	NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
};

static const struct genl_multicast_group nl80211_mcgrps[] = {
62 63 64 65 66
	[NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
	[NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
	[NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
	[NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
	[NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67
#ifdef CONFIG_NL80211_TESTMODE
68
	[NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69 70 71
#endif
};

72 73 74
/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75
{
76 77 78 79 80 81 82
	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;
83

84
	ASSERT_RTNL();
85

86 87
	if (!have_ifidx && !have_wdev_id)
		return ERR_PTR(-EINVAL);
88

89 90 91 92 93
	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;
94 95
	}

96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123
	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;

		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;
			}
		}

		if (result)
			break;
	}

	if (result)
		return result;
	return ERR_PTR(-ENODEV);
124 125
}

126
static struct cfg80211_registered_device *
127
__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128
{
129 130
	struct cfg80211_registered_device *rdev = NULL, *tmp;
	struct net_device *netdev;
131

132
	ASSERT_RTNL();
133

134
	if (!attrs[NL80211_ATTR_WIPHY] &&
135 136
	    !attrs[NL80211_ATTR_IFINDEX] &&
	    !attrs[NL80211_ATTR_WDEV])
137 138
		return ERR_PTR(-EINVAL);

139
	if (attrs[NL80211_ATTR_WIPHY])
140
		rdev = cfg80211_rdev_by_wiphy_idx(
141
				nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142

143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
	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 */
			list_for_each_entry(wdev, &tmp->wdev_list, list) {
				if (wdev->identifier != (u32)wdev_id)
					continue;
				found = true;
				break;
			}

			if (!found)
				tmp = NULL;

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

167 168
	if (attrs[NL80211_ATTR_IFINDEX]) {
		int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169
		netdev = __dev_get_by_index(netns, ifindex);
170 171
		if (netdev) {
			if (netdev->ieee80211_ptr)
172 173
				tmp = wiphy_to_rdev(
					netdev->ieee80211_ptr->wiphy);
174 175 176 177 178 179 180 181 182 183 184 185
			else
				tmp = NULL;

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

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

			rdev = tmp;
186 187 188
		}
	}

Johannes Berg's avatar
Johannes Berg committed
189 190
	if (!rdev)
		return ERR_PTR(-ENODEV);
191

Johannes Berg's avatar
Johannes Berg committed
192 193 194 195
	if (netns != wiphy_net(&rdev->wiphy))
		return ERR_PTR(-ENODEV);

	return rdev;
196 197 198 199 200 201 202 203 204 205
}

/*
 * This function returns a pointer to the driver
 * that the genl_info item that is passed refers to.
 *
 * 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
206
cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207
{
208
	return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 210
}

211
/* policy for the attributes */
212
static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 214
	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215
				      .len = 20-1 },
216
	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217

218
	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
Sujith's avatar
Sujith committed
219
	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 221 222 223
	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },

224 225 226 227
	[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 },
228
	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229
	[NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230 231 232 233

	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234

235 236
	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237

238
	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 240 241 242 243
	[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 },
244
	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245
	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246 247 248 249 250 251 252

	[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 },
253 254 255 256 257
	[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 },
258
	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259
	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg's avatar
Johannes Berg committed
260
	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261
	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262
				   .len = IEEE80211_MAX_MESH_ID_LEN },
263
	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264

265 266 267
	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

268 269 270
	[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 },
271 272
	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
					   .len = NL80211_MAX_SUPP_RATES },
273
	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274

275
	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276
	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277

278
	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279 280 281 282

	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
			      .len = IEEE80211_MAX_DATA_LEN },
283 284
	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285 286 287 288 289

	[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
290
	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291
	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292
	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 294 295
	[NL80211_ATTR_STA_FLAGS2] = {
		.len = sizeof(struct nl80211_sta_flag_update),
	},
296
	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 298
	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 300 301
	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302
	[NL80211_ATTR_PID] = { .type = NLA_U32 },
303
	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
Samuel Ortiz's avatar
Samuel Ortiz committed
304 305
	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
				 .len = WLAN_PMKID_LEN },
306 307
	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308
	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 310 311
	[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
312
	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313
	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314
	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315
	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 317
	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318
	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 320
	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321
	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322
	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323
	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324
	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325
	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326
	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327
	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328
	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329
	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 331 332 333
	[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 },
334
	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335
	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336
	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 338 339 340 341
	[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 },
342
	[NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343
	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 345
	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
				      .len = IEEE80211_MAX_DATA_LEN },
346
	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 348 349 350
	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
		.len = NL80211_HT_CAPABILITY_LEN
	},
351
	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352
	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353
	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354
	[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355
	[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356
	[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357
	[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358
	[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 360
	[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
	[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 362
	[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
	[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 364
	[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365
	[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 367 368 369
	[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
	[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
		.len = NL80211_VHT_CAPABILITY_LEN,
	},
370 371 372
	[NL80211_ATTR_MDID] = { .type = NLA_U16 },
	[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
				  .len = IEEE80211_MAX_DATA_LEN },
373
	[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 375 376
	[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
	[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
	[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 378
	[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
	[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 380
	[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
	[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381
	[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382
	[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 384 385
	[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 387
	[NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
				   .len = IEEE80211_QOS_MAP_LEN_MAX },
388 389
	[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
	[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390
	[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391
	[NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392
	[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393
	[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 395 396
	[NL80211_ATTR_TSID] = { .type = NLA_U8 },
	[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
	[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397
	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398
	[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399
	[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400
	[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
401
	[NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
402 403
};

404
/* policy for the key attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
405
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
Johannes Berg's avatar
Johannes Berg committed
406
	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
407 408
	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
409
	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
410 411
	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
412
	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
413 414 415 416 417 418 419 420
	[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 },
421 422
};

423 424 425 426 427 428 429
/* 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 },
430 431 432 433
	[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 },
434
	[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
435
	[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454
};

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 },
455 456
};

457 458 459 460 461 462 463 464
/* policy for coalesce rule attributes */
static const struct nla_policy
nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
	[NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
	[NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
	[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
};

465 466 467 468 469 470 471 472
/* 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 },
};

473 474
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
475
	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
476
						 .len = IEEE80211_MAX_SSID_LEN },
477
	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
478 479
};

480 481 482 483
static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
				     struct netlink_callback *cb,
				     struct cfg80211_registered_device **rdev,
				     struct wireless_dev **wdev)
484
{
485
	int err;
486

487
	rtnl_lock();
488

489 490 491 492 493 494
	if (!cb->args[0]) {
		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
				  nl80211_policy);
		if (err)
			goto out_unlock;
495

496 497 498 499 500 501
		*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
						   nl80211_fam.attrbuf);
		if (IS_ERR(*wdev)) {
			err = PTR_ERR(*wdev);
			goto out_unlock;
		}
502
		*rdev = wiphy_to_rdev((*wdev)->wiphy);
503 504
		/* 0 is the first index - add 1 to parse only once */
		cb->args[0] = (*rdev)->wiphy_idx + 1;
505 506
		cb->args[1] = (*wdev)->identifier;
	} else {
507 508
		/* subtract the 1 again here */
		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
509
		struct wireless_dev *tmp;
510

511 512 513 514
		if (!wiphy) {
			err = -ENODEV;
			goto out_unlock;
		}
515
		*rdev = wiphy_to_rdev(wiphy);
516
		*wdev = NULL;
517

518 519 520 521 522 523
		list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
			if (tmp->identifier == cb->args[1]) {
				*wdev = tmp;
				break;
			}
		}
524

525 526 527 528
		if (!*wdev) {
			err = -ENODEV;
			goto out_unlock;
		}
529 530 531
	}

	return 0;
532
 out_unlock:
533 534 535 536
	rtnl_unlock();
	return err;
}

537
static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
538 539 540 541
{
	rtnl_unlock();
}

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
/* 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;
}

572
/* message building helper */
573
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
574 575 576
				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
577
	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
578 579
}

580
static int nl80211_msg_put_channel(struct sk_buff *msg,
581 582
				   struct ieee80211_channel *chan,
				   bool large)
583
{
584 585 586 587 588 589 590
	/* Some channels must be completely excluded from the
	 * list to protect old user-space tools from breaking
	 */
	if (!large && chan->flags &
	    (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
		return 0;

591 592 593
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
594

595 596 597
	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
		goto nla_put_failure;
598 599 600 601 602 603
	if (chan->flags & IEEE80211_CHAN_NO_IR) {
		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
			goto nla_put_failure;
		if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
			goto nla_put_failure;
	}
604 605 606 607 608 609 610 611 612 613 614 615 616 617
	if (chan->flags & IEEE80211_CHAN_RADAR) {
		if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
			goto nla_put_failure;
		if (large) {
			u32 time;

			time = elapsed_jiffies_msecs(chan->dfs_state_entered);

			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
					chan->dfs_state))
				goto nla_put_failure;
			if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
					time))
				goto nla_put_failure;
618 619 620 621
			if (nla_put_u32(msg,
					NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
					chan->dfs_cac_ms))
				goto nla_put_failure;
622 623
		}
	}
624

625 626 627 628 629 630 631 632 633 634 635 636 637
	if (large) {
		if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
			goto nla_put_failure;
638 639 640 641 642 643
		if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
			goto nla_put_failure;
644 645 646 647 648 649
		if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
			goto nla_put_failure;
		if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
			goto nla_put_failure;
650 651
	}

652 653 654
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
655 656 657 658 659 660 661

	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

662 663
/* netlink command implementations */

664 665 666
struct key_parse {
	struct key_params p;
	int idx;
667
	int type;
668
	bool def, defmgmt;
669
	bool def_uni, def_multi;
670 671 672 673 674 675 676 677 678 679 680 681 682
};

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];

683 684 685 686 687 688 689
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
	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]);

706 707 708 709 710 711
	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;
	}

712 713
	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
714 715 716
		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
717 718 719 720 721 722 723
		if (err)
			return err;

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

724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
	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];

748 749 750 751 752 753 754
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

755 756 757 758 759 760
	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;
	}

761 762 763 764 765 766 767 768 769 770 771 772 773
	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];
	}

774 775 776 777 778 779 780 781 782
	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;
783
	k->type = -1;
784 785 786 787 788 789 790 791 792 793 794 795

	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;

796 797 798 799 800
	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816
	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
817 818
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
819
		       struct nlattr *keys, bool *no_ht)
Johannes Berg's avatar
Johannes Berg committed
820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849
{
	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;
850 851
			if (!parse.def_uni || !parse.def_multi)
				goto error;
Johannes Berg's avatar
Johannes Berg committed
852 853 854
		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
855
						     parse.idx, false, NULL);
Johannes Berg's avatar
Johannes Berg committed
856 857 858 859 860 861
		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);
862 863 864 865 866 867

		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
868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
	}

	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:
883
	case NL80211_IFTYPE_P2P_GO:
884
	case NL80211_IFTYPE_MESH_POINT:
Johannes Berg's avatar
Johannes Berg committed
885 886 887
		break;
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
888
	case NL80211_IFTYPE_P2P_CLIENT:
889
		if (!wdev->current_bss)
Johannes Berg's avatar
Johannes Berg committed
890 891
			return -ENOLINK;
		break;
892
	case NL80211_IFTYPE_UNSPECIFIED:
893
	case NL80211_IFTYPE_OCB:
894 895 896 897
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_WDS:
	case NUM_NL80211_IFTYPES:
Johannes Berg's avatar
Johannes Berg committed
898 899 900 901 902 903
		return -EINVAL;
	}

	return 0;
}

904 905 906 907 908 909 910 911 912 913 914 915 916
static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
							struct nlattr *tb)
{
	struct ieee80211_channel *chan;

	if (tb == NULL)
		return NULL;
	chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
	if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
		return NULL;
	return chan;
}

917 918 919 920 921 922 923 924 925 926
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) {
927 928
		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
929 930 931 932 933 934 935 936 937 938 939 940
		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,
941 942
					  struct sk_buff *msg,
					  bool large)
943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971
{
	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;
972 973 974
			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
975 976 977 978 979 980 981 982
			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);

983 984 985 986 987 988 989 990
		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;
991
		if (large &&
992 993 994 995
		    (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
				c->radar_detect_widths) ||
		     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
				c->radar_detect_regions)))
996
			goto nla_put_failure;
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

1008
#ifdef CONFIG_PM
1009 1010 1011
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
1012
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
	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,