nl80211.c 328 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 62 63 64 65
	NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
};

static const struct genl_multicast_group nl80211_mcgrps[] = {
	[NL80211_MCGRP_CONFIG] = { .name = "config", },
	[NL80211_MCGRP_SCAN] = { .name = "scan", },
	[NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
	[NL80211_MCGRP_MLME] = { .name = "mlme", },
66
	[NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 68 69 70 71
#ifdef CONFIG_NL80211_TESTMODE
	[NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
#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 */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
212
static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
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_IFACE_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 },
398 399
};

400
/* policy for the key attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
401
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
Johannes Berg's avatar
Johannes Berg committed
402
	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 404
	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405
	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 407
	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408
	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 410 411 412 413 414 415 416
	[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 },
417 418
};

419 420 421 422 423 424 425
/* 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 },
426 427 428 429
	[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 },
430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
	[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 },
450 451
};

452 453 454 455 456 457 458 459
/* 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 },
};

460 461 462 463 464 465 466 467
/* 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 },
};

468 469
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470
	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471
						 .len = IEEE80211_MAX_SSID_LEN },
472
	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 474
};

475 476 477 478
static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
				     struct netlink_callback *cb,
				     struct cfg80211_registered_device **rdev,
				     struct wireless_dev **wdev)
479
{
480
	int err;
481

482
	rtnl_lock();
483

484 485 486 487 488 489
	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;
490

491 492 493 494 495 496
		*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
						   nl80211_fam.attrbuf);
		if (IS_ERR(*wdev)) {
			err = PTR_ERR(*wdev);
			goto out_unlock;
		}
497
		*rdev = wiphy_to_rdev((*wdev)->wiphy);
498 499
		/* 0 is the first index - add 1 to parse only once */
		cb->args[0] = (*rdev)->wiphy_idx + 1;
500 501
		cb->args[1] = (*wdev)->identifier;
	} else {
502 503
		/* subtract the 1 again here */
		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504
		struct wireless_dev *tmp;
505

506 507 508 509
		if (!wiphy) {
			err = -ENODEV;
			goto out_unlock;
		}
510
		*rdev = wiphy_to_rdev(wiphy);
511
		*wdev = NULL;
512

513 514 515 516 517 518
		list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
			if (tmp->identifier == cb->args[1]) {
				*wdev = tmp;
				break;
			}
		}
519

520 521 522 523
		if (!*wdev) {
			err = -ENODEV;
			goto out_unlock;
		}
524 525 526
	}

	return 0;
527
 out_unlock:
528 529 530 531
	rtnl_unlock();
	return err;
}

532
static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 534 535 536
{
	rtnl_unlock();
}

537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566
/* 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;
}

567
/* message building helper */
568
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 570 571
				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
572
	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 574
}

575
static int nl80211_msg_put_channel(struct sk_buff *msg,
576 577
				   struct ieee80211_channel *chan,
				   bool large)
578
{
579 580 581 582 583 584 585
	/* 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;

586 587 588
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
589

590 591 592
	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
		goto nla_put_failure;
593 594 595 596 597 598
	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;
	}
599 600 601 602 603 604 605 606 607 608 609 610 611 612
	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;
613 614 615 616
			if (nla_put_u32(msg,
					NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
					chan->dfs_cac_ms))
				goto nla_put_failure;
617 618
		}
	}
619

620 621 622 623 624 625 626 627 628 629 630 631 632
	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;
633 634 635 636 637 638
		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;
639 640 641 642 643 644
		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;
645 646
	}

647 648 649
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
650 651 652 653 654 655 656

	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

657 658
/* netlink command implementations */

659 660 661
struct key_parse {
	struct key_params p;
	int idx;
662
	int type;
663
	bool def, defmgmt;
664
	bool def_uni, def_multi;
665 666 667 668 669 670 671 672 673 674 675 676 677
};

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];

678 679 680 681 682 683 684
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700
	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]);

701 702 703 704 705 706
	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;
	}

707 708
	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 710 711
		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
712 713 714 715 716 717 718
		if (err)
			return err;

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

719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
	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];

743 744 745 746 747 748 749
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

750 751 752 753 754 755
	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;
	}

756 757 758 759 760 761 762 763 764 765 766 767 768
	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];
	}

769 770 771 772 773 774 775 776 777
	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;
778
	k->type = -1;
779 780 781 782 783 784 785 786 787 788 789 790

	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;

791 792 793 794 795
	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811
	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
812 813
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814
		       struct nlattr *keys, bool *no_ht)
Johannes Berg's avatar
Johannes Berg committed
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844
{
	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;
845 846
			if (!parse.def_uni || !parse.def_multi)
				goto error;
Johannes Berg's avatar
Johannes Berg committed
847 848 849
		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
850
						     parse.idx, false, NULL);
Johannes Berg's avatar
Johannes Berg committed
851 852 853 854 855 856
		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);
857 858 859 860 861 862

		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
863 864 865 866 867 868 869 870 871 872 873 874 875 876 877
	}

	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:
878
	case NL80211_IFTYPE_P2P_GO:
879
	case NL80211_IFTYPE_MESH_POINT:
Johannes Berg's avatar
Johannes Berg committed
880 881 882
		break;
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
883
	case NL80211_IFTYPE_P2P_CLIENT:
884
		if (!wdev->current_bss)
Johannes Berg's avatar
Johannes Berg committed
885 886
			return -ENOLINK;
		break;
887
	case NL80211_IFTYPE_UNSPECIFIED:
888
	case NL80211_IFTYPE_OCB:
889 890 891 892
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_WDS:
	case NUM_NL80211_IFTYPES:
Johannes Berg's avatar
Johannes Berg committed
893 894 895 896 897 898
		return -EINVAL;
	}

	return 0;
}

899 900 901 902 903 904 905 906 907 908 909 910 911
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;
}

912 913 914 915 916 917 918 919 920 921
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) {
922 923
		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
924 925 926 927 928 929 930 931 932 933 934 935
		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,
936 937
					  struct sk_buff *msg,
					  bool large)
938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966
{
	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;
967 968 969
			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
970 971 972 973 974 975 976 977
			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);

978 979 980 981 982 983 984 985
		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;
986
		if (large &&
987 988 989 990
		    (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)))
991
			goto nla_put_failure;
992 993 994 995 996 997 998 999 1000 1001 1002

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

1003
#ifdef CONFIG_PM
1004 1005 1006
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
1007
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1008 1009 1010 1011 1012 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
	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;
}

1044
static int nl80211_send_wowlan(struct sk_buff *msg,
1045
			       struct cfg80211_registered_device *rdev,
1046
			       bool large)
1047
{
1048
	struct nlattr *nl_wowlan;
1049

1050
	if (!rdev->wiphy.