nl80211.c 308 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
static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
34
			    struct genl_info *info);
35
static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 37
			      struct genl_info *info);

38 39
/* the netlink family */
static struct genl_family nl80211_fam = {
40 41 42 43
	.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 */
44
	.maxattr = NL80211_ATTR_MAX,
45
	.netnsok = true,
46 47
	.pre_doit = nl80211_pre_doit,
	.post_doit = nl80211_post_doit,
48 49
};

50 51 52 53 54 55
/* multicast groups */
enum nl80211_multicast_groups {
	NL80211_MCGRP_CONFIG,
	NL80211_MCGRP_SCAN,
	NL80211_MCGRP_REGULATORY,
	NL80211_MCGRP_MLME,
56
	NL80211_MCGRP_VENDOR,
57 58 59 60 61 62 63 64
	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", },
65
	[NL80211_MCGRP_VENDOR] = { .name = "vendor", },
66 67 68 69 70
#ifdef CONFIG_NL80211_TESTMODE
	[NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
#endif
};

71 72 73
/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
74
{
75 76 77 78 79 80 81
	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;
82

83
	ASSERT_RTNL();
84

85 86
	if (!have_ifidx && !have_wdev_id)
		return ERR_PTR(-EINVAL);
87

88 89 90 91 92
	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;
93 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
	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);
123 124
}

125
static struct cfg80211_registered_device *
126
__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
127
{
128 129
	struct cfg80211_registered_device *rdev = NULL, *tmp;
	struct net_device *netdev;
130

131
	ASSERT_RTNL();
132

133
	if (!attrs[NL80211_ATTR_WIPHY] &&
134 135
	    !attrs[NL80211_ATTR_IFINDEX] &&
	    !attrs[NL80211_ATTR_WDEV])
136 137
		return ERR_PTR(-EINVAL);

138
	if (attrs[NL80211_ATTR_WIPHY])
139
		rdev = cfg80211_rdev_by_wiphy_idx(
140
				nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
141

142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165
	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;
		}
	}

166 167
	if (attrs[NL80211_ATTR_IFINDEX]) {
		int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
168
		netdev = __dev_get_by_index(netns, ifindex);
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
		if (netdev) {
			if (netdev->ieee80211_ptr)
				tmp = wiphy_to_dev(
						netdev->ieee80211_ptr->wiphy);
			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;
185 186 187
		}
	}

Johannes Berg's avatar
Johannes Berg committed
188 189
	if (!rdev)
		return ERR_PTR(-ENODEV);
190

Johannes Berg's avatar
Johannes Berg committed
191 192 193 194
	if (netns != wiphy_net(&rdev->wiphy))
		return ERR_PTR(-ENODEV);

	return rdev;
195 196 197 198 199 200 201 202 203 204
}

/*
 * 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
205
cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
206
{
207
	return __cfg80211_rdev_from_attrs(netns, info->attrs);
208 209
}

210
/* policy for the attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
211
static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
212 213
	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
214
				      .len = 20-1 },
215
	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
216

217
	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
Sujith's avatar
Sujith committed
218
	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
219 220 221 222
	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },

223 224 225 226
	[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 },
227
	[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
228 229 230 231

	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
232

233 234
	[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
	[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
235

236
	[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
237 238 239 240 241
	[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 },
242
	[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
243
	[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
244 245 246 247 248 249 250

	[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 },
251 252 253 254 255
	[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 },
256
	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
257
	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg's avatar
Johannes Berg committed
258
	[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
259
	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
260
				   .len = IEEE80211_MAX_MESH_ID_LEN },
261
	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
262

263 264 265
	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },

266 267 268
	[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 },
269 270
	[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
					   .len = NL80211_MAX_SUPP_RATES },
271
	[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
272

273
	[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
274
	[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
275

276
	[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
277 278 279 280

	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
			      .len = IEEE80211_MAX_DATA_LEN },
281 282
	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
283 284 285 286 287

	[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
288
	[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
289
	[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
290
	[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
291 292 293
	[NL80211_ATTR_STA_FLAGS2] = {
		.len = sizeof(struct nl80211_sta_flag_update),
	},
294
	[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
295 296
	[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
	[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
297 298 299
	[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
	[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
	[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
300
	[NL80211_ATTR_PID] = { .type = NLA_U32 },
301
	[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
Samuel Ortiz's avatar
Samuel Ortiz committed
302 303
	[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
				 .len = WLAN_PMKID_LEN },
304 305
	[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
	[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
306
	[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
307 308 309
	[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
310
	[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
311
	[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
312
	[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
313
	[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
314 315
	[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
316
	[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
317 318
	[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
	[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
319
	[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
320
	[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
321
	[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
322
	[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
323
	[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
324
	[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
325
	[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
326
	[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
327
	[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
328 329 330 331
	[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 },
332
	[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
333
	[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
334
	[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
335 336 337 338 339
	[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 },
340
	[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
341 342
	[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
				      .len = IEEE80211_MAX_DATA_LEN },
343
	[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
344 345 346 347
	[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
	[NL80211_ATTR_HT_CAPABILITY_MASK] = {
		.len = NL80211_HT_CAPABILITY_LEN
	},
348
	[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
349
	[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
350
	[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
351
	[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
352
	[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
353
	[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
354
	[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
355
	[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
356 357
	[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
	[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
358 359
	[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
	[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
360 361
	[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
	[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
362
	[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
363 364 365 366
	[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
	[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
		.len = NL80211_VHT_CAPABILITY_LEN,
	},
367 368 369
	[NL80211_ATTR_MDID] = { .type = NLA_U16 },
	[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
				  .len = IEEE80211_MAX_DATA_LEN },
370
	[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
371 372 373 374 375
	[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
	[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
	[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
	[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
	[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
376 377
	[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
	[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
378
	[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
379
	[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
380 381 382
	[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
	[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
383 384
	[NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
				   .len = IEEE80211_QOS_MAP_LEN_MAX },
385 386
	[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
	[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
387 388
};

389
/* policy for the key attributes */
Alexey Dobriyan's avatar
Alexey Dobriyan committed
390
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
Johannes Berg's avatar
Johannes Berg committed
391
	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
392 393
	[NL80211_KEY_IDX] = { .type = NLA_U8 },
	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
394
	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
395 396
	[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
	[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
397
	[NL80211_KEY_TYPE] = { .type = NLA_U32 },
398 399 400 401 402 403 404 405
	[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 },
406 407
};

408 409 410 411 412 413 414
/* 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 },
415 416 417 418
	[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 },
419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
	[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 },
439 440
};

441 442 443 444 445 446 447 448
/* 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 },
};

449 450 451 452 453 454 455 456
/* 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 },
};

457 458
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
459
	[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
460
						 .len = IEEE80211_MAX_SSID_LEN },
461
	[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
462 463
};

464 465 466 467
static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
				     struct netlink_callback *cb,
				     struct cfg80211_registered_device **rdev,
				     struct wireless_dev **wdev)
468
{
469
	int err;
470

471
	rtnl_lock();
472

473 474 475 476 477 478
	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;
479

480 481 482 483 484 485 486
		*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
						   nl80211_fam.attrbuf);
		if (IS_ERR(*wdev)) {
			err = PTR_ERR(*wdev);
			goto out_unlock;
		}
		*rdev = wiphy_to_dev((*wdev)->wiphy);
487 488
		/* 0 is the first index - add 1 to parse only once */
		cb->args[0] = (*rdev)->wiphy_idx + 1;
489 490
		cb->args[1] = (*wdev)->identifier;
	} else {
491 492
		/* subtract the 1 again here */
		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
493
		struct wireless_dev *tmp;
494

495 496 497 498 499 500
		if (!wiphy) {
			err = -ENODEV;
			goto out_unlock;
		}
		*rdev = wiphy_to_dev(wiphy);
		*wdev = NULL;
501

502 503 504 505 506 507
		list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
			if (tmp->identifier == cb->args[1]) {
				*wdev = tmp;
				break;
			}
		}
508

509 510 511 512
		if (!*wdev) {
			err = -ENODEV;
			goto out_unlock;
		}
513 514 515
	}

	return 0;
516
 out_unlock:
517 518 519 520
	rtnl_unlock();
	return err;
}

521
static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
522 523 524 525
{
	rtnl_unlock();
}

526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
/* 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;
}

556
/* message building helper */
557
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
558 559 560
				   int flags, u8 cmd)
{
	/* since there is no private header just add the generic one */
561
	return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
562 563
}

564
static int nl80211_msg_put_channel(struct sk_buff *msg,
565 566
				   struct ieee80211_channel *chan,
				   bool large)
567
{
568 569 570
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
			chan->center_freq))
		goto nla_put_failure;
571

572 573 574
	if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
	    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
		goto nla_put_failure;
575 576 577 578 579 580
	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;
	}
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596
	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;
		}
	}
597

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

613 614 615
	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
			DBM_TO_MBM(chan->max_power)))
		goto nla_put_failure;
616 617 618 619 620 621 622

	return 0;

 nla_put_failure:
	return -ENOBUFS;
}

623 624
/* netlink command implementations */

625 626 627
struct key_parse {
	struct key_params p;
	int idx;
628
	int type;
629
	bool def, defmgmt;
630
	bool def_uni, def_multi;
631 632 633 634 635 636 637 638 639 640 641 642 643
};

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];

644 645 646 647 648 649 650
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
	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]);

667 668 669 670 671 672
	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;
	}

673 674
	if (tb[NL80211_KEY_DEFAULT_TYPES]) {
		struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
675 676 677
		err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
				       tb[NL80211_KEY_DEFAULT_TYPES],
				       nl80211_key_default_policy);
678 679 680 681 682 683 684
		if (err)
			return err;

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

685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708
	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];

709 710 711 712 713 714 715
	if (k->def) {
		k->def_uni = true;
		k->def_multi = true;
	}
	if (k->defmgmt)
		k->def_multi = true;

716 717 718 719 720 721
	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;
	}

722 723 724 725 726 727 728 729 730 731 732 733 734
	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];
	}

735 736 737 738 739 740 741 742 743
	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;
744
	k->type = -1;
745 746 747 748 749 750 751 752 753 754 755 756

	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;

757 758 759 760 761
	if (k->defmgmt) {
		if (k->def_uni || !k->def_multi)
			return -EINVAL;
	}

762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
	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
778 779
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
780
		       struct nlattr *keys, bool *no_ht)
Johannes Berg's avatar
Johannes Berg committed
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810
{
	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;
811 812
			if (!parse.def_uni || !parse.def_multi)
				goto error;
Johannes Berg's avatar
Johannes Berg committed
813 814 815
		} else if (parse.defmgmt)
			goto error;
		err = cfg80211_validate_key_settings(rdev, &parse.p,
816
						     parse.idx, false, NULL);
Johannes Berg's avatar
Johannes Berg committed
817 818 819 820 821 822
		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);
823 824 825 826 827 828

		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
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843
	}

	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:
844
	case NL80211_IFTYPE_P2P_GO:
845
	case NL80211_IFTYPE_MESH_POINT:
Johannes Berg's avatar
Johannes Berg committed
846 847 848
		break;
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
849
	case NL80211_IFTYPE_P2P_CLIENT:
850
		if (!wdev->current_bss)
Johannes Berg's avatar
Johannes Berg committed
851 852 853 854 855 856 857 858 859
			return -ENOLINK;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

860 861 862 863 864 865 866 867 868 869
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) {
870 871
		if ((ifmodes & 1) && nla_put_flag(msg, i))
			goto nla_put_failure;
872 873 874 875 876 877 878 879 880 881 882 883
		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,
884 885
					  struct sk_buff *msg,
					  bool large)
886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
{
	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;
915 916 917
			if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
					c->limits[j].max))
				goto nla_put_failure;
918 919 920 921 922 923 924 925
			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);

926 927 928 929 930 931 932 933
		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;
934 935 936 937
		if (large &&
		    nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
				c->radar_detect_widths))
			goto nla_put_failure;
938 939 940 941 942 943 944 945 946 947 948

		nla_nest_end(msg, nl_combi);
	}

	nla_nest_end(msg, nl_combis);

	return 0;
nla_put_failure:
	return -ENOBUFS;
}

949
#ifdef CONFIG_PM
950 951 952
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
					struct sk_buff *msg)
{
953
	const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
	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;
}

990
static int nl80211_send_wowlan(struct sk_buff *msg,
991 992
			       struct cfg80211_registered_device *dev,
			       bool large)
993
{
994
	struct nlattr *nl_wowlan;
995

996
	if (!dev->wiphy.wowlan)
997
		return 0;
998

999 1000 1001
	nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
	if (!nl_wowlan)
		return -ENOBUFS;
1002

1003
	if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1004
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1005
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1006
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1007
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1008
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1009
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1010
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1011
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1012
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1013
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1014
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1015
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1016
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1017
	    ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1018 1019
	     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
		return -ENOBUFS;
1020

1021
	if (dev->wiphy.wowlan->n_patterns) {
1022
		struct nl80211_pattern_support pat = {
1023 1024 1025 1026
			.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,
			.max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1027
		};
1028