cfg.c 100.4 KB
Newer Older
1 2 3
/*
 * mac80211 configuration hooks for cfg80211
 *
4
 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
5
 * Copyright 2013-2014  Intel Mobile Communications GmbH
6 7 8 9
 *
 * This file is GPLv2 as found in COPYING.
 */

10
#include <linux/ieee80211.h>
11 12
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
13
#include <linux/slab.h>
14
#include <net/net_namespace.h>
15
#include <linux/rcupdate.h>
16
#include <linux/if_ether.h>
17 18
#include <net/cfg80211.h>
#include "ieee80211_i.h"
19
#include "driver-ops.h"
20
#include "cfg.h"
J
Johannes Berg 已提交
21
#include "rate.h"
22
#include "mesh.h"
23
#include "wme.h"
24

25 26
static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
						const char *name,
27 28 29
						enum nl80211_iftype type,
						u32 *flags,
						struct vif_params *params)
30 31
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
32
	struct wireless_dev *wdev;
33 34
	struct ieee80211_sub_if_data *sdata;
	int err;
35

36
	err = ieee80211_if_add(local, name, &wdev, type, params);
37 38
	if (err)
		return ERR_PTR(err);
39

40
	if (type == NL80211_IFTYPE_MONITOR && flags) {
41
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 43 44
		sdata->u.mntr_flags = *flags;
	}

45
	return wdev;
46 47
}

48
static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49
{
50
	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51

52
	return 0;
53 54
}

55 56
static int ieee80211_change_iface(struct wiphy *wiphy,
				  struct net_device *dev,
57 58
				  enum nl80211_iftype type, u32 *flags,
				  struct vif_params *params)
59
{
60
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61
	int ret;
62

63
	ret = ieee80211_if_change_type(sdata, type);
64 65
	if (ret)
		return ret;
66

67 68
	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
69
		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 71 72 73
	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

74 75 76 77
	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
		struct ieee80211_local *local = sdata->local;

		if (ieee80211_sdata_running(sdata)) {
78 79 80
			u32 mask = MONITOR_FLAG_COOK_FRAMES |
				   MONITOR_FLAG_ACTIVE;

81
			/*
82 83 84
			 * Prohibit MONITOR_FLAG_COOK_FRAMES and
			 * MONITOR_FLAG_ACTIVE to be changed while the
			 * interface is up.
85 86 87 88 89
			 * Else we would need to add a lot of cruft
			 * to update everything:
			 *	cooked_mntrs, monitor and all fif_* counters
			 *	reconfigure hardware
			 */
90
			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
				return -EBUSY;

			ieee80211_adjust_monitor_flags(sdata, -1);
			sdata->u.mntr_flags = *flags;
			ieee80211_adjust_monitor_flags(sdata, 1);

			ieee80211_configure_filter(local);
		} else {
			/*
			 * Because the interface is down, ieee80211_do_stop
			 * and ieee80211_do_open take care of "everything"
			 * mentioned in the comment above.
			 */
			sdata->u.mntr_flags = *flags;
		}
	}
107

108 109 110
	return 0;
}

111 112 113
static int ieee80211_start_p2p_device(struct wiphy *wiphy,
				      struct wireless_dev *wdev)
{
114 115 116 117 118 119 120 121 122
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
	int ret;

	mutex_lock(&sdata->local->chanctx_mtx);
	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
	mutex_unlock(&sdata->local->chanctx_mtx);
	if (ret < 0)
		return ret;

123 124 125 126 127 128 129 130 131
	return ieee80211_do_open(wdev, true);
}

static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
				      struct wireless_dev *wdev)
{
	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
}

132 133 134 135 136 137 138 139 140 141
static int ieee80211_set_noack_map(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	sdata->noack_map = noack_map;
	return 0;
}

142
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
143
			     u8 key_idx, bool pairwise, const u8 *mac_addr,
144 145
			     struct key_params *params)
{
146
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
147
	struct ieee80211_local *local = sdata->local;
148
	struct sta_info *sta = NULL;
149
	const struct ieee80211_cipher_scheme *cs = NULL;
150
	struct ieee80211_key *key;
151
	int err;
152

153
	if (!ieee80211_sdata_running(sdata))
J
Johannes Berg 已提交
154 155
		return -ENETDOWN;

156
	/* reject WEP and TKIP keys if WEP failed to initialize */
157 158 159
	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_TKIP:
160
	case WLAN_CIPHER_SUITE_WEP104:
161
		if (IS_ERR(local->wep_tx_tfm))
162
			return -EINVAL;
163
		break;
164
	case WLAN_CIPHER_SUITE_CCMP:
J
Jouni Malinen 已提交
165
	case WLAN_CIPHER_SUITE_CCMP_256:
166
	case WLAN_CIPHER_SUITE_AES_CMAC:
167
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
168 169
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
170
	case WLAN_CIPHER_SUITE_GCMP:
171
	case WLAN_CIPHER_SUITE_GCMP_256:
172
		break;
173
	default:
174
		cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
175
		break;
176 177
	}

178
	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
179 180
				  params->key, params->seq_len, params->seq,
				  cs);
181 182
	if (IS_ERR(key))
		return PTR_ERR(key);
183

184 185 186
	if (pairwise)
		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;

187
	mutex_lock(&local->sta_mtx);
188

189
	if (mac_addr) {
190 191 192 193
		if (ieee80211_vif_is_mesh(&sdata->vif))
			sta = sta_info_get(sdata, mac_addr);
		else
			sta = sta_info_get_bss(sdata, mac_addr);
J
Johannes Berg 已提交
194 195 196 197 198
		/*
		 * The ASSOC test makes sure the driver is ready to
		 * receive the key. When wpa_supplicant has roamed
		 * using FT, it attempts to set the key before
		 * association has completed, this rejects that attempt
S
Stephen Hemminger 已提交
199
		 * so it will set the key again after association.
J
Johannes Berg 已提交
200 201 202 203 204
		 *
		 * TODO: accept the key if we have a station entry and
		 *       add it to the device after the station.
		 */
		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
205
			ieee80211_key_free_unused(key);
206 207
			err = -ENOENT;
			goto out_unlock;
208
		}
209 210
	}

211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_STATION:
		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
		/* Keys without a station are used for TX only */
		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_ADHOC:
		/* no MFP (yet) */
		break;
	case NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
#endif
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_UNSPECIFIED:
	case NUM_NL80211_IFTYPES:
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
238
	case NL80211_IFTYPE_OCB:
239 240 241 242 243
		/* shouldn't happen */
		WARN_ON_ONCE(1);
		break;
	}

244 245 246
	if (sta)
		sta->cipher_scheme = cs;

247
	err = ieee80211_key_link(key, sdata, sta);
248

249
 out_unlock:
250
	mutex_unlock(&local->sta_mtx);
251 252

	return err;
253 254 255
}

static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
256
			     u8 key_idx, bool pairwise, const u8 *mac_addr)
257
{
258 259
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
260
	struct sta_info *sta;
261
	struct ieee80211_key *key = NULL;
262 263
	int ret;

264 265
	mutex_lock(&local->sta_mtx);
	mutex_lock(&local->key_mtx);
266

267
	if (mac_addr) {
268 269
		ret = -ENOENT;

270
		sta = sta_info_get_bss(sdata, mac_addr);
271
		if (!sta)
272
			goto out_unlock;
273

274
		if (pairwise)
275
			key = key_mtx_dereference(local, sta->ptk[key_idx]);
276
		else
J
Johannes Berg 已提交
277
			key = key_mtx_dereference(local, sta->gtk[key_idx]);
278
	} else
J
Johannes Berg 已提交
279
		key = key_mtx_dereference(local, sdata->keys[key_idx]);
280

281
	if (!key) {
282 283 284
		ret = -ENOENT;
		goto out_unlock;
	}
285

286
	ieee80211_key_free(key, true);
287

288 289
	ret = 0;
 out_unlock:
290 291
	mutex_unlock(&local->key_mtx);
	mutex_unlock(&local->sta_mtx);
292 293

	return ret;
294 295
}

296
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
297 298
			     u8 key_idx, bool pairwise, const u8 *mac_addr,
			     void *cookie,
299 300 301
			     void (*callback)(void *cookie,
					      struct key_params *params))
{
302
	struct ieee80211_sub_if_data *sdata;
303 304 305
	struct sta_info *sta = NULL;
	u8 seq[6] = {0};
	struct key_params params;
306
	struct ieee80211_key *key = NULL;
J
Johannes Berg 已提交
307
	u64 pn64;
308 309 310 311
	u32 iv32;
	u16 iv16;
	int err = -ENOENT;

312 313
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

314 315
	rcu_read_lock();

316
	if (mac_addr) {
317
		sta = sta_info_get_bss(sdata, mac_addr);
318 319 320
		if (!sta)
			goto out;

321
		if (pairwise && key_idx < NUM_DEFAULT_KEYS)
322
			key = rcu_dereference(sta->ptk[key_idx]);
323 324
		else if (!pairwise &&
			 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
J
Johannes Berg 已提交
325
			key = rcu_dereference(sta->gtk[key_idx]);
326
	} else
J
Johannes Berg 已提交
327
		key = rcu_dereference(sdata->keys[key_idx]);
328 329 330 331 332 333

	if (!key)
		goto out;

	memset(&params, 0, sizeof(params));

334
	params.cipher = key->conf.cipher;
335

336 337
	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
338 339
		iv32 = key->u.tkip.tx.iv32;
		iv16 = key->u.tkip.tx.iv16;
340

341 342 343 344
		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
			drv_get_tkip_seq(sdata->local,
					 key->conf.hw_key_idx,
					 &iv32, &iv16);
345 346 347 348 349 350 351 352 353 354

		seq[0] = iv16 & 0xff;
		seq[1] = (iv16 >> 8) & 0xff;
		seq[2] = iv32 & 0xff;
		seq[3] = (iv32 >> 8) & 0xff;
		seq[4] = (iv32 >> 16) & 0xff;
		seq[5] = (iv32 >> 24) & 0xff;
		params.seq = seq;
		params.seq_len = 6;
		break;
355
	case WLAN_CIPHER_SUITE_CCMP:
J
Jouni Malinen 已提交
356
	case WLAN_CIPHER_SUITE_CCMP_256:
J
Johannes Berg 已提交
357 358 359 360 361 362 363
		pn64 = atomic64_read(&key->u.ccmp.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
364 365 366
		params.seq = seq;
		params.seq_len = 6;
		break;
367
	case WLAN_CIPHER_SUITE_AES_CMAC:
368
	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
J
Johannes Berg 已提交
369 370 371 372 373 374 375
		pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
376 377 378
		params.seq = seq;
		params.seq_len = 6;
		break;
379 380 381 382 383 384 385 386 387 388 389 390
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
		pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
		params.seq = seq;
		params.seq_len = 6;
		break;
391 392 393 394 395 396 397 398 399 400 401 402
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
		pn64 = atomic64_read(&key->u.gcmp.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
		params.seq = seq;
		params.seq_len = 6;
		break;
403 404 405 406 407 408 409 410 411
	}

	params.key = key->conf.key;
	params.key_len = key->conf.keylen;

	callback(cookie, &params);
	err = 0;

 out:
412
	rcu_read_unlock();
413 414 415
	return err;
}

416 417
static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
418 419
					u8 key_idx, bool uni,
					bool multi)
420
{
J
Johannes Berg 已提交
421
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
422

423
	ieee80211_set_default_key(sdata, key_idx, uni, multi);
424 425 426 427

	return 0;
}

428 429 430 431
static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
					     struct net_device *dev,
					     u8 key_idx)
{
432
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
433 434 435 436 437 438

	ieee80211_set_default_mgmt_key(sdata, key_idx);

	return 0;
}

439 440 441 442 443
void sta_set_rate_info_tx(struct sta_info *sta,
			  const struct ieee80211_tx_rate *rate,
			  struct rate_info *rinfo)
{
	rinfo->flags = 0;
444
	if (rate->flags & IEEE80211_TX_RC_MCS) {
445
		rinfo->flags |= RATE_INFO_FLAGS_MCS;
446 447 448 449 450 451 452
		rinfo->mcs = rate->idx;
	} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
		rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
		rinfo->nss = ieee80211_rate_get_vht_nss(rate);
	} else {
		struct ieee80211_supported_band *sband;
453 454 455
		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
		u16 brate;

456 457
		sband = sta->local->hw.wiphy->bands[
				ieee80211_get_sdata_band(sta->sdata)];
458 459
		brate = sband->bitrates[rate->idx].bitrate;
		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
460
	}
461
	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
462 463 464 465 466 467 468
		rinfo->bw = RATE_INFO_BW_40;
	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_80;
	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
469 470 471 472
	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
}

473 474 475 476 477 478 479 480 481 482 483 484 485
void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
{
	rinfo->flags = 0;

	if (sta->last_rx_rate_flag & RX_FLAG_HT) {
		rinfo->flags |= RATE_INFO_FLAGS_MCS;
		rinfo->mcs = sta->last_rx_rate_idx;
	} else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
		rinfo->nss = sta->last_rx_rate_vht_nss;
		rinfo->mcs = sta->last_rx_rate_idx;
	} else {
		struct ieee80211_supported_band *sband;
486 487
		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
		u16 brate;
488 489 490

		sband = sta->local->hw.wiphy->bands[
				ieee80211_get_sdata_band(sta->sdata)];
491 492
		brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
493 494 495 496
	}

	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
497 498 499 500 501 502 503 504 505 506 507 508 509

	if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
		rinfo->bw = RATE_INFO_BW_5;
	else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
		rinfo->bw = RATE_INFO_BW_10;
	else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
		rinfo->bw = RATE_INFO_BW_40;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
		rinfo->bw = RATE_INFO_BW_80;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
510 511
}

512
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
513
				  int idx, u8 *mac, struct station_info *sinfo)
514
{
515
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
516
	struct ieee80211_local *local = sdata->local;
517
	struct sta_info *sta;
518 519
	int ret = -ENOENT;

520
	mutex_lock(&local->sta_mtx);
521

522
	sta = sta_info_get_by_idx(sdata, idx);
523 524
	if (sta) {
		ret = 0;
525
		memcpy(mac, sta->sta.addr, ETH_ALEN);
526 527
		sta_set_sinfo(sta, sinfo);
	}
528

529
	mutex_unlock(&local->sta_mtx);
530

531
	return ret;
532 533
}

534 535 536 537 538 539 540 541
static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
				 int idx, struct survey_info *survey)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	return drv_get_survey(local, idx, survey);
}

542
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
543
				 const u8 *mac, struct station_info *sinfo)
544
{
545
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
546
	struct ieee80211_local *local = sdata->local;
547
	struct sta_info *sta;
548
	int ret = -ENOENT;
549

550
	mutex_lock(&local->sta_mtx);
551

552
	sta = sta_info_get_bss(sdata, mac);
553 554 555 556 557
	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

558
	mutex_unlock(&local->sta_mtx);
559 560

	return ret;
561 562
}

J
Johannes Berg 已提交
563
static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
564
					 struct cfg80211_chan_def *chandef)
565 566
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
567 568
	struct ieee80211_sub_if_data *sdata;
	int ret = 0;
569

570
	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
J
Johannes Berg 已提交
571
		return 0;
572

573
	mutex_lock(&local->mtx);
J
Johannes Berg 已提交
574 575 576 577 578 579 580
	mutex_lock(&local->iflist_mtx);
	if (local->use_chanctx) {
		sdata = rcu_dereference_protected(
				local->monitor_sdata,
				lockdep_is_held(&local->iflist_mtx));
		if (sdata) {
			ieee80211_vif_release_channel(sdata);
581
			ret = ieee80211_vif_use_channel(sdata, chandef,
J
Johannes Berg 已提交
582 583 584
					IEEE80211_CHANCTX_EXCLUSIVE);
		}
	} else if (local->open_count == local->monitors) {
585
		local->_oper_chandef = *chandef;
J
Johannes Berg 已提交
586 587
		ieee80211_hw_config(local, 0);
	}
588

589 590
	if (ret == 0)
		local->monitor_chandef = *chandef;
J
Johannes Berg 已提交
591
	mutex_unlock(&local->iflist_mtx);
592
	mutex_unlock(&local->mtx);
593

J
Johannes Berg 已提交
594
	return ret;
595 596
}

597
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
598 599
				    const u8 *resp, size_t resp_len,
				    const struct ieee80211_csa_settings *csa)
600
{
601
	struct probe_resp *new, *old;
602 603

	if (!resp || !resp_len)
604
		return 1;
605

606
	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
607

608
	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
609 610 611
	if (!new)
		return -ENOMEM;

612 613
	new->len = resp_len;
	memcpy(new->data, resp, resp_len);
614

615 616 617 618 619
	if (csa)
		memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
		       csa->n_counter_offsets_presp *
		       sizeof(new->csa_counter_offsets[0]));

620
	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
621 622
	if (old)
		kfree_rcu(old, rcu_head);
623 624 625 626

	return 0;
}

627
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
628 629
				   struct cfg80211_beacon_data *params,
				   const struct ieee80211_csa_settings *csa)
630 631 632
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
633 634
	int size, err;
	u32 changed = BSS_CHANGED_BEACON;
635

636 637
	old = sdata_dereference(sdata->u.ap.beacon, sdata);

638 639 640

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
641
		return -EINVAL;
642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672

	/* new or old head? */
	if (params->head)
		new_head_len = params->head_len;
	else
		new_head_len = old->head_len;

	/* new or old tail? */
	if (params->tail || !old)
		/* params->tail_len will be zero for !params->tail */
		new_tail_len = params->tail_len;
	else
		new_tail_len = old->tail_len;

	size = sizeof(*new) + new_head_len + new_tail_len;

	new = kzalloc(size, GFP_KERNEL);
	if (!new)
		return -ENOMEM;

	/* start filling the new info now */

	/*
	 * pointers go into the block we allocated,
	 * memory is | beacon_data | head | tail |
	 */
	new->head = ((u8 *) new) + sizeof(*new);
	new->tail = new->head + new_head_len;
	new->head_len = new_head_len;
	new->tail_len = new_tail_len;

673 674 675 676 677 678 679
	if (csa) {
		new->csa_current_counter = csa->count;
		memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
		       csa->n_counter_offsets_beacon *
		       sizeof(new->csa_counter_offsets[0]));
	}

680 681 682 683 684 685 686 687 688 689 690 691 692
	/* copy in head */
	if (params->head)
		memcpy(new->head, params->head, new_head_len);
	else
		memcpy(new->head, old->head, new_head_len);

	/* copy in optional tail */
	if (params->tail)
		memcpy(new->tail, params->tail, new_tail_len);
	else
		if (old)
			memcpy(new->tail, old->tail, new_tail_len);

693
	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
694
				       params->probe_resp_len, csa);
695 696 697
	if (err < 0)
		return err;
	if (err == 0)
698 699
		changed |= BSS_CHANGED_AP_PROBE_RESP;

700 701 702 703
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	if (old)
		kfree_rcu(old, rcu_head);
704

705
	return changed;
706 707
}

708 709
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
			      struct cfg80211_ap_settings *params)
710
{
711
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
712
	struct ieee80211_local *local = sdata->local;
713
	struct beacon_data *old;
714
	struct ieee80211_sub_if_data *vlan;
715 716 717
	u32 changed = BSS_CHANGED_BEACON_INT |
		      BSS_CHANGED_BEACON_ENABLED |
		      BSS_CHANGED_BEACON |
718
		      BSS_CHANGED_SSID |
719 720
		      BSS_CHANGED_P2P_PS |
		      BSS_CHANGED_TXPOWER;
721
	int err;
722

723
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
724 725 726
	if (old)
		return -EALREADY;

727 728 729 730 731 732 733 734 735 736 737 738 739
	switch (params->smps_mode) {
	case NL80211_SMPS_OFF:
		sdata->smps_mode = IEEE80211_SMPS_OFF;
		break;
	case NL80211_SMPS_STATIC:
		sdata->smps_mode = IEEE80211_SMPS_STATIC;
		break;
	case NL80211_SMPS_DYNAMIC:
		sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
		break;
	default:
		return -EINVAL;
	}
740 741
	sdata->needed_rx_chains = sdata->local->rx_chains;

742
	mutex_lock(&local->mtx);
743
	err = ieee80211_vif_use_channel(sdata, &params->chandef,
J
Johannes Berg 已提交
744
					IEEE80211_CHANCTX_SHARED);
745 746
	if (!err)
		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
747
	mutex_unlock(&local->mtx);
748 749 750
	if (err)
		return err;

751 752 753 754 755 756
	/*
	 * Apply control port protocol, this allows us to
	 * not encrypt dynamic WEP control frames.
	 */
	sdata->control_port_protocol = params->crypto.control_port_ethertype;
	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
757 758 759 760
	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
							&params->crypto,
							sdata->vif.type);

761 762 763 764 765
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
		vlan->control_port_protocol =
			params->crypto.control_port_ethertype;
		vlan->control_port_no_encrypt =
			params->crypto.control_port_no_encrypt;
766 767 768 769
		vlan->encrypt_headroom =
			ieee80211_cs_headroom(sdata->local,
					      &params->crypto,
					      vlan->vif.type);
770 771
	}

772 773
	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
	sdata->vif.bss_conf.dtim_period = params->dtim_period;
774
	sdata->vif.bss_conf.enable_beacon = true;
775 776 777 778 779 780 781 782

	sdata->vif.bss_conf.ssid_len = params->ssid_len;
	if (params->ssid_len)
		memcpy(sdata->vif.bss_conf.ssid, params->ssid,
		       params->ssid_len);
	sdata->vif.bss_conf.hidden_ssid =
		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);

J
Janusz Dziedzic 已提交
783 784 785 786 787 788 789
	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
	sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
	if (params->p2p_opp_ps)
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
					IEEE80211_P2P_OPPPS_ENABLE_BIT;
790

791
	err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
792 793
	if (err < 0) {
		ieee80211_vif_release_channel(sdata);
794
		return err;
795
	}
796 797
	changed |= err;

798 799
	err = drv_start_ap(sdata->local, sdata);
	if (err) {
800 801
		old = sdata_dereference(sdata->u.ap.beacon, sdata);

802 803 804
		if (old)
			kfree_rcu(old, rcu_head);
		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
805
		ieee80211_vif_release_channel(sdata);
806 807 808
		return err;
	}

809
	ieee80211_recalc_dtim(local, sdata);
810 811
	ieee80211_bss_info_change_notify(sdata, changed);

812 813 814 815
	netif_carrier_on(dev);
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_on(vlan->dev);

816
	return 0;
817 818
}

819 820
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
				   struct cfg80211_beacon_data *params)
821
{
822
	struct ieee80211_sub_if_data *sdata;
823
	struct beacon_data *old;
824
	int err;
825

826
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
827
	sdata_assert_lock(sdata);
828

829 830 831 832 833 834
	/* don't allow changing the beacon while CSA is in place - offset
	 * of channel switch counter may change
	 */
	if (sdata->vif.csa_active)
		return -EBUSY;

835
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
836 837 838
	if (!old)
		return -ENOENT;

839
	err = ieee80211_assign_beacon(sdata, params, NULL);
840 841 842 843
	if (err < 0)
		return err;
	ieee80211_bss_info_change_notify(sdata, err);
	return 0;
844 845
}

846
static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
847
{
848 849 850 851 852
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_sub_if_data *vlan;
	struct ieee80211_local *local = sdata->local;
	struct beacon_data *old_beacon;
	struct probe_resp *old_probe_resp;
853
	struct cfg80211_chan_def chandef;
854

855 856
	sdata_assert_lock(sdata);

857
	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
858
	if (!old_beacon)
859
		return -ENOENT;
860
	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
861

862
	/* abort any running channel switch */
863
	mutex_lock(&local->mtx);
864
	sdata->vif.csa_active = false;
865 866 867 868 869 870
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}

871 872
	mutex_unlock(&local->mtx);

873 874 875
	kfree(sdata->u.ap.next_beacon);
	sdata->u.ap.next_beacon = NULL;

876
	/* turn off carrier for this interface and dependent VLANs */
877 878 879 880
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_off(vlan->dev);
	netif_carrier_off(dev);

881
	/* remove beacon and probe response */
882
	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
883 884 885 886
	RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
	kfree_rcu(old_beacon, rcu_head);
	if (old_probe_resp)
		kfree_rcu(old_probe_resp, rcu_head);
887
	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
888

889
	__sta_info_flush(sdata, true);
890
	ieee80211_free_keys(sdata, true);
891

892
	sdata->vif.bss_conf.enable_beacon = false;
893
	sdata->vif.bss_conf.ssid_len = 0;
894
	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
895
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
896

897
	if (sdata->wdev.cac_started) {
898
		chandef = sdata->vif.bss_conf.chandef;
899
		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
900 901
		cfg80211_cac_event(sdata->dev, &chandef,
				   NL80211_RADAR_CAC_ABORTED,
902 903 904
				   GFP_KERNEL);
	}

905 906
	drv_stop_ap(sdata->local, sdata);

907 908 909 910
	/* free all potentially still buffered bcast frames */
	local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
	skb_queue_purge(&sdata->u.ap.ps.bc_buf);

911
	mutex_lock(&local->mtx);
912
	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
J
Johannes Berg 已提交
913
	ieee80211_vif_release_channel(sdata);
914
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
915

916
	return 0;
917 918
}

919 920 921 922 923 924 925 926 927
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
	u8 da[ETH_ALEN];	/* broadcast */
	u8 sa[ETH_ALEN];	/* STA addr */
	__be16 len;		/* 6 */
	u8 dsap;		/* 0 */
	u8 ssap;		/* 0 */
	u8 control;
	u8 xid_info[3];
E
Eric Dumazet 已提交
928
} __packed;
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945

static void ieee80211_send_layer2_update(struct sta_info *sta)
{
	struct iapp_layer2_update *msg;
	struct sk_buff *skb;

	/* Send Level 2 Update Frame to update forwarding tables in layer 2
	 * bridge devices */

	skb = dev_alloc_skb(sizeof(*msg));
	if (!skb)
		return;
	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));

	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */

J
Johannes Berg 已提交
946
	eth_broadcast_addr(msg->da);
947
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
948 949 950 951 952 953 954 955 956
	msg->len = htons(6);
	msg->dsap = 0;
	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
	msg->control = 0xaf;	/* XID response lsb.1111F101.
				 * F=0 (no poll command; unsolicited frame) */
	msg->xid_info[0] = 0x81;	/* XID format identifier */
	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */

957 958
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
959
	memset(skb->cb, 0, sizeof(skb->cb));
960
	netif_rx_ni(skb);
961 962
}

963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
static int sta_apply_auth_flags(struct ieee80211_local *local,
				struct sta_info *sta,
				u32 mask, u32 set)
{
	int ret;

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
		else
			ret = 0;
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
	    test_sta_flag(sta, WLAN_STA_AUTH)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
		if (ret)
			return ret;
	}

	return 0;
}

1015 1016 1017
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1018
{
1019
	int ret = 0;
1020
	struct ieee80211_supported_band *sband;
1021
	struct ieee80211_sub_if_data *sdata = sta->sdata;
J
Johannes Berg 已提交
1022
	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1023
	u32 mask, set;
1024

J
Johannes Berg 已提交
1025
	sband = local->hw.wiphy->bands[band];
J
Johannes Berg 已提交
1026

1027 1028
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
J
Johannes Berg 已提交
1029

1030 1031 1032 1033 1034 1035 1036 1037 1038
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
		/*
		 * In mesh mode, ASSOCIATED isn't part of the nl80211
		 * API but must follow AUTHENTICATED for driver state.
		 */
		if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
	} else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		/*
		 * TDLS -- everything follows authorized, but
		 * only becoming authorized is possible, not
		 * going back
		 */
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
			set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
			       BIT(NL80211_STA_FLAG_ASSOCIATED);
			mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
				BIT(NL80211_STA_FLAG_ASSOCIATED);
		}
1051
	}
1052

1053 1054 1055 1056 1057 1058
	/* auth flags will be set later for TDLS stations */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		ret = sta_apply_auth_flags(local, sta, mask, set);
		if (ret)
			return ret;
	}
1059

1060 1061
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1062 1063 1064
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1065
	}
1066

1067 1068
	if (mask & BIT(NL80211_STA_FLAG_WME))
		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1069

1070 1071
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1072 1073 1074
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1075
	}
1076

1077 1078
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1079 1080 1081
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1082
	}
1083

1084 1085 1086 1087 1088 1089 1090
	/* mark TDLS channel switch support, if the AP allows it */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
	    !sdata->u.mgd.tdls_chan_switch_prohibited &&
	    params->ext_capab_len >= 4 &&
	    params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
		set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);

1091 1092 1093 1094
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1095

1096 1097 1098 1099 1100 1101 1102
	/*
	 * cfg80211 validates this (1-2007) and allows setting the AID
	 * only when creating a new station entry
	 */
	if (params->aid)
		sta->sta.aid = params->aid;

J
Johannes Berg 已提交
1103
	/*
1104 1105 1106 1107 1108
	 * Some of the following updates would be racy if called on an
	 * existing station, via ieee80211_change_station(). However,
	 * all such changes are rejected by cfg80211 except for updates
	 * changing the supported rates on an existing but not yet used
	 * TDLS peer.
J
Johannes Berg 已提交
1109 1110
	 */

1111 1112 1113 1114
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1115 1116 1117 1118
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1119
	}
1120

J
Johannes Berg 已提交
1121
	if (params->ht_capa)
B
Ben Greear 已提交
1122
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1123
						  params->ht_capa, sta);
1124

M
Mahesh Palivela 已提交
1125 1126
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1127
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1128

1129 1130 1131 1132 1133 1134 1135 1136 1137
	if (params->opmode_notif_used) {
		/* returned value is only needed for rc update, but the
		 * rc isn't initialized here yet, so ignore it
		 */
		__ieee80211_vht_handle_opmode(sdata, sta,
					      params->opmode_notif,
					      band, false);
	}

1138
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1139
#ifdef CONFIG_MAC80211_MESH
1140
		u32 changed = 0;
1141 1142

		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1143
			switch (params->plink_state) {
1144
			case NL80211_PLINK_ESTAB:
1145 1146 1147 1148
				if (sta->plink_state != NL80211_PLINK_ESTAB)
					changed = mesh_plink_inc_estab_count(
							sdata);
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1149 1150

				ieee80211_mps_sta_status_update(sta);
1151 1152
				changed |= ieee80211_mps_set_sta_local_pm(sta,
					      sdata->u.mesh.mshcfg.power_mode);
1153 1154
				break;
			case NL80211_PLINK_LISTEN:
1155
			case NL80211_PLINK_BLOCKED:
1156 1157 1158 1159 1160 1161 1162
			case NL80211_PLINK_OPN_SNT:
			case NL80211_PLINK_OPN_RCVD:
			case NL80211_PLINK_CNF_RCVD:
			case NL80211_PLINK_HOLDING:
				if (sta->plink_state == NL80211_PLINK_ESTAB)
					changed = mesh_plink_dec_estab_count(
							sdata);
1163
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1164 1165

				ieee80211_mps_sta_status_update(sta);
1166 1167
				changed |= ieee80211_mps_set_sta_local_pm(sta,
						NL80211_MESH_POWER_UNKNOWN);
1168 1169 1170 1171 1172
				break;
			default:
				/*  nothing  */
				break;
			}
1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184
		}

		switch (params->plink_action) {
		case NL80211_PLINK_ACTION_NO_ACTION:
			/* nothing */
			break;
		case NL80211_PLINK_ACTION_OPEN:
			changed |= mesh_plink_open(sta);
			break;
		case NL80211_PLINK_ACTION_BLOCK:
			changed |= mesh_plink_block(sta);
			break;
1185
		}
M
Marco Porsch 已提交
1186 1187

		if (params->local_pm)
1188 1189 1190
			changed |=
			      ieee80211_mps_set_sta_local_pm(sta,
							     params->local_pm);
1191
		ieee80211_mbss_info_change_notify(sdata, changed);
1192
#endif
J
Johannes Berg 已提交
1193
	}
1194

1195 1196 1197 1198 1199 1200 1201
	/* set the STA state after all sta info from usermode has been set */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		ret = sta_apply_auth_flags(local, sta, mask, set);
		if (ret)
			return ret;
	}

1202
	return 0;
1203 1204 1205
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1206 1207
				 const u8 *mac,
				 struct station_parameters *params)
1208
{
1209
	struct ieee80211_local *local = wiphy_priv(wiphy);
1210 1211
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1212
	int err;
1213
	int layer2_update;
1214 1215 1216 1217

	if (params->vlan) {
		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1218 1219
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1220 1221 1222 1223
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1224
	if (ether_addr_equal(mac, sdata->vif.addr))
1225 1226 1227 1228 1229 1230
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1231 1232
	if (!sta)
		return -ENOMEM;
1233

1234 1235 1236 1237
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1238 1239 1240
	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1241 1242
	} else {
		sta->sta.tdls = true;
1243
	}
1244

1245 1246 1247 1248 1249
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1250

1251
	/*
1252 1253
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1254 1255 1256
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1257

1258 1259 1260
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1261
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1262 1263 1264 1265 1266
	if (err) {
		rcu_read_unlock();
		return err;
	}

1267
	if (layer2_update)
J
Johannes Berg 已提交
1268 1269 1270 1271
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1272 1273 1274 1275
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1276
				 struct station_del_parameters *params)
1277
{
1278
	struct ieee80211_sub_if_data *sdata;
1279

1280 1281
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1282 1283
	if (params->mac)
		return sta_info_destroy_addr_bss(sdata, params->mac);
1284

1285
	sta_info_flush(sdata);
1286 1287 1288 1289
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1290
				    struct net_device *dev, const u8 *mac,
1291 1292
				    struct station_parameters *params)
{
1293
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1294
	struct ieee80211_local *local = wiphy_priv(wiphy);
1295 1296
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1297
	enum cfg80211_station_type statype;
1298
	int err;
1299

1300
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1301

1302
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1303
	if (!sta) {
1304 1305
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1306
	}
1307

1308 1309
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1310
		if (sdata->u.mesh.user_mpm)
1311
			statype = CFG80211_STA_MESH_PEER_USER;
1312
		else
1313
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334
		break;
	case NL80211_IFTYPE_ADHOC:
		statype = CFG80211_STA_IBSS;
		break;
	case NL80211_IFTYPE_STATION:
		if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
			statype = CFG80211_STA_AP_STA;
			break;
		}
		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
			statype = CFG80211_STA_TDLS_PEER_ACTIVE;
		else
			statype = CFG80211_STA_TDLS_PEER_SETUP;
		break;
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
		statype = CFG80211_STA_AP_CLIENT;
		break;
	default:
		err = -EOPNOTSUPP;
		goto out_err;
1335 1336
	}

1337 1338 1339 1340
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1341
	if (params->vlan && params->vlan != sta->sdata->dev) {
1342 1343 1344
		bool prev_4addr = false;
		bool new_4addr = false;

1345 1346
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1347
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1348
			if (vlansdata->u.vlan.sta) {
1349 1350
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1351
			}
1352

1353
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1354 1355 1356 1357 1358
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1359
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1360
			prev_4addr = true;
1361 1362
		}

1363
		sta->sdata = vlansdata;
1364 1365 1366 1367 1368 1369 1370 1371 1372

		if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
		    prev_4addr != new_4addr) {
			if (new_4addr)
				atomic_dec(&sta->sdata->bss->num_mcast_sta);
			else
				atomic_inc(&sta->sdata->bss->num_mcast_sta);
		}

1373 1374 1375
		ieee80211_send_layer2_update(sta);
	}

1376
	err = sta_apply_parameters(local, sta, params);
1377 1378
	if (err)
		goto out_err;
1379

1380 1381 1382
	/* When peer becomes authorized, init rate control as well */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
	    test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1383 1384
		rate_control_rate_init(sta);

1385
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1386

1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400
	if ((sdata->vif.type == NL80211_IFTYPE_AP ||
	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
	    sta->known_smps_mode != sta->sdata->bss->req_smps &&
	    test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
	    sta_info_tx_streams(sta) != 1) {
		ht_dbg(sta->sdata,
		       "%pM just authorized and MIMO capable - update SMPS\n",
		       sta->sta.addr);
		ieee80211_send_smps_action(sta->sdata,
			sta->sdata->bss->req_smps,
			sta->sta.addr,
			sta->sdata->vif.bss_conf.bssid);
	}

1401
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1402
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1403
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1404 1405
		ieee80211_recalc_ps_vif(sdata);
	}
1406

1407
	return 0;
1408 1409 1410
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1411 1412
}

1413 1414
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1415
			       const u8 *dst, const u8 *next_hop)
1416
{
1417
	struct ieee80211_sub_if_data *sdata;
1418 1419 1420
	struct mesh_path *mpath;
	struct sta_info *sta;

1421 1422
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1423
	rcu_read_lock();
1424
	sta = sta_info_get(sdata, next_hop);
1425 1426
	if (!sta) {
		rcu_read_unlock();
1427
		return -ENOENT;
1428
	}
1429

1430 1431
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1432
		rcu_read_unlock();
1433
		return PTR_ERR(mpath);
1434
	}
1435 1436

	mesh_path_fix_nexthop(mpath, sta);
1437

1438 1439 1440 1441 1442
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1443
			       const u8 *dst)
1444
{
1445 1446
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1447
	if (dst)
J
Johannes Berg 已提交
1448
		return mesh_path_del(sdata, dst);
1449

1450
	mesh_path_flush_by_iface(sdata);
1451 1452 1453
	return 0;
}

1454 1455
static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *dst, const u8 *next_hop)
1456
{
1457
	struct ieee80211_sub_if_data *sdata;
1458 1459 1460
	struct mesh_path *mpath;
	struct sta_info *sta;

1461 1462
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1463 1464
	rcu_read_lock();

1465
	sta = sta_info_get(sdata, next_hop);
1466 1467
	if (!sta) {
		rcu_read_unlock();
1468
		return -ENOENT;
1469
	}
1470

J
Johannes Berg 已提交
1471
	mpath = mesh_path_lookup(sdata, dst);
1472 1473 1474 1475 1476 1477
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1478

1479 1480 1481 1482 1483 1484 1485
	rcu_read_unlock();
	return 0;
}

static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
			    struct mpath_info *pinfo)
{
J
Johannes Berg 已提交
1486 1487 1488 1489
	struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);

	if (next_hop_sta)
		memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1490 1491 1492
	else
		memset(next_hop, 0, ETH_ALEN);

1493 1494
	memset(pinfo, 0, sizeof(*pinfo));

1495 1496
	pinfo->generation = mesh_paths_generation;

1497
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1498
			MPATH_INFO_SN |
1499 1500 1501 1502 1503 1504 1505
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1506
	pinfo->sn = mpath->sn;
1507 1508 1509 1510 1511 1512 1513 1514 1515 1516
	pinfo->metric = mpath->metric;
	if (time_before(jiffies, mpath->exp_time))
		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
	pinfo->discovery_timeout =
			jiffies_to_msecs(mpath->discovery_timeout);
	pinfo->discovery_retries = mpath->discovery_retries;
	if (mpath->flags & MESH_PATH_ACTIVE)
		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1517 1518
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1519 1520
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1521 1522
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1523 1524 1525 1526 1527 1528
}

static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)

{
1529
	struct ieee80211_sub_if_data *sdata;
1530 1531
	struct mesh_path *mpath;

1532 1533
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1534
	rcu_read_lock();
J
Johannes Berg 已提交
1535
	mpath = mesh_path_lookup(sdata, dst);
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1547 1548
				int idx, u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
1549
{
1550
	struct ieee80211_sub_if_data *sdata;
1551 1552
	struct mesh_path *mpath;

1553 1554
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1555
	rcu_read_lock();
J
Johannes Berg 已提交
1556
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1557 1558 1559 1560 1561 1562 1563 1564 1565
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}
1566

1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
			  struct mpath_info *pinfo)
{
	memset(pinfo, 0, sizeof(*pinfo));
	memcpy(mpp, mpath->mpp, ETH_ALEN);

	pinfo->generation = mpp_paths_generation;
}

static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
			     u8 *dst, u8 *mpp, struct mpath_info *pinfo)

{
	struct ieee80211_sub_if_data *sdata;
	struct mesh_path *mpath;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	rcu_read_lock();
	mpath = mpp_path_lookup(sdata, dst);
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpp_set_pinfo(mpath, mpp, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
			      int idx, u8 *dst, u8 *mpp,
			      struct mpath_info *pinfo)
{
	struct ieee80211_sub_if_data *sdata;
	struct mesh_path *mpath;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	rcu_read_lock();
	mpath = mpp_path_lookup_by_idx(sdata, idx);
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpp_set_pinfo(mpath, mpp, pinfo);
	rcu_read_unlock();
	return 0;
}

1618
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633
				struct net_device *dev,
				struct mesh_config *conf)
{
	struct ieee80211_sub_if_data *sdata;
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
	return 0;
}

static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
{
	return (mask >> (parm-1)) & 0x1;
}

1634 1635 1636 1637 1638
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1639 1640
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1641

1642
	/* allocate information elements */
1643
	new_ie = NULL;
1644
	old_ie = ifmsh->ie;
1645

1646 1647
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1648 1649 1650 1651
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1652 1653 1654
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1655 1656 1657 1658

	/* now copy the rest of the setup parameters */
	ifmsh->mesh_id_len = setup->mesh_id_len;
	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1659
	ifmsh->mesh_sp_id = setup->sync_method;
1660 1661
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1662
	ifmsh->user_mpm = setup->user_mpm;
1663
	ifmsh->mesh_auth_id = setup->auth_id;
1664 1665 1666 1667 1668
	ifmsh->security = IEEE80211_MESH_SEC_NONE;
	if (setup->is_authenticated)
		ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
	if (setup->is_secure)
		ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1669

1670 1671 1672
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1673
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1674

1675 1676 1677
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1678 1679 1680
	return 0;
}

1681
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1682 1683
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1684 1685 1686
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1687 1688
	struct ieee80211_if_mesh *ifmsh;

1689
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1690
	ifmsh = &sdata->u.mesh;
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705

	/* Set the config options which we are interested in setting */
	conf = &(sdata->u.mesh.mshcfg);
	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
		conf->dot11MeshTTL = nconf->dot11MeshTTL;
1706
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1707
		conf->element_ttl = nconf->element_ttl;
1708 1709 1710
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1711
		conf->auto_open_plinks = nconf->auto_open_plinks;
1712
	}
1713 1714 1715
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
		conf->dot11MeshHWMPmaxPREQretries =
			nconf->dot11MeshHWMPmaxPREQretries;
	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
		conf->path_refresh_time = nconf->path_refresh_time;
	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
		conf->min_discovery_timeout = nconf->min_discovery_timeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathTimeout =
			nconf->dot11MeshHWMPactivePathTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPpreqMinInterval =
			nconf->dot11MeshHWMPpreqMinInterval;
1729 1730 1731
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1732 1733 1734 1735
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1736 1737 1738 1739
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1740
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1741 1742 1743 1744
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1745 1746
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1747 1748
			ieee80211_mesh_root_setup(ifmsh);
		}
1749 1750 1751
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1752
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1753 1754
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1755 1756
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1757 1758 1759 1760 1761 1762 1763 1764
	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
		/* our RSSI threshold implementation is supported only for
		 * devices that report signal in dBm.
		 */
		if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
			return -ENOTSUPP;
		conf->rssi_threshold = nconf->rssi_threshold;
	}
1765 1766 1767 1768 1769
	if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
		conf->ht_opmode = nconf->ht_opmode;
		sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
	}
1770 1771 1772 1773 1774 1775
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathToRootTimeout =
			nconf->dot11MeshHWMPactivePathToRootTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
		conf->dot11MeshHWMProotInterval =
			nconf->dot11MeshHWMProotInterval;
1776 1777 1778
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1779 1780 1781 1782
	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
		conf->power_mode = nconf->power_mode;
		ieee80211_mps_local_status_update(sdata);
	}
T
Thomas Pedersen 已提交
1783
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1784 1785
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1786 1787
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1788
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1789 1790 1791
	return 0;
}

1792 1793 1794 1795 1796 1797
static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
			       const struct mesh_config *conf,
			       const struct mesh_setup *setup)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1798
	int err;
1799

1800 1801 1802 1803
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1804

1805 1806 1807 1808
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

1809
	mutex_lock(&sdata->local->mtx);
1810
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
1811
					IEEE80211_CHANCTX_SHARED);
1812
	mutex_unlock(&sdata->local->mtx);
1813 1814 1815
	if (err)
		return err;

T
Thomas Pedersen 已提交
1816
	return ieee80211_start_mesh(sdata);
1817 1818 1819 1820 1821 1822 1823
}

static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	ieee80211_stop_mesh(sdata);
1824
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
1825
	ieee80211_vif_release_channel(sdata);
1826
	mutex_unlock(&sdata->local->mtx);
1827 1828 1829

	return 0;
}
1830 1831
#endif

1832 1833 1834 1835
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
1836 1837
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
1838 1839
	u32 changed = 0;

1840
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
1841 1842 1843
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
1844 1845

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
1846
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1847 1848 1849
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1850
		sdata->vif.bss_conf.use_short_preamble =
1851 1852 1853
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1854 1855

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
1856
	    band == IEEE80211_BAND_5GHZ) {
1857 1858 1859 1860
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1861
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1862
		sdata->vif.bss_conf.use_short_slot =
1863 1864 1865 1866
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1867
	if (params->basic_rates) {
1868 1869 1870 1871 1872
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
1873 1874 1875
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1876 1877 1878 1879 1880 1881 1882
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1883 1884 1885 1886 1887 1888
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1889
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
1890 1891 1892 1893
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1894 1895 1896
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
1897 1898 1899 1900 1901 1902 1903
	if (params->p2p_opp_ps > 0) {
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
					IEEE80211_P2P_OPPPS_ENABLE_BIT;
		changed |= BSS_CHANGED_P2P_PS;
	} else if (params->p2p_opp_ps == 0) {
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1904 1905 1906
		changed |= BSS_CHANGED_P2P_PS;
	}

1907 1908 1909 1910 1911
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1912
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1913
				    struct net_device *dev,
1914 1915 1916
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1917
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1918 1919 1920 1921 1922
	struct ieee80211_tx_queue_params p;

	if (!local->ops->conf_tx)
		return -EOPNOTSUPP;

1923 1924 1925
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1926 1927 1928 1929 1930
	memset(&p, 0, sizeof(p));
	p.aifs = params->aifs;
	p.cw_max = params->cwmax;
	p.cw_min = params->cwmin;
	p.txop = params->txop;
K
Kalle Valo 已提交
1931 1932 1933 1934 1935 1936 1937

	/*
	 * Setting tx queue params disables u-apsd because it's only
	 * called in master mode.
	 */
	p.uapsd = false;

1938 1939
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1940
		wiphy_debug(local->hw.wiphy,
1941 1942
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1943 1944 1945
		return -EINVAL;
	}

1946 1947
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1948 1949 1950
	return 0;
}

1951
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1952 1953
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1954
{
1955
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
}

static int ieee80211_resume(struct wiphy *wiphy)
{
	return __ieee80211_resume(wiphy_priv(wiphy));
}
#else
#define ieee80211_suspend NULL
#define ieee80211_resume NULL
#endif

1967 1968 1969
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
1970 1971 1972
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1973

1974 1975 1976 1977 1978
	switch (ieee80211_vif_type_p2p(&sdata->vif)) {
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_MESH_POINT:
	case NL80211_IFTYPE_P2P_CLIENT:
1979
	case NL80211_IFTYPE_P2P_DEVICE:
1980 1981 1982 1983
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1984 1985 1986 1987 1988
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1989
	case NL80211_IFTYPE_AP:
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
		/*
		 * If the scan has been forced (and the driver supports
		 * forcing), don't care about being beaconing already.
		 * This will create problems to the attached stations (e.g. all
		 * the  frames sent while scanning on other channel will be
		 * lost)
		 */
		if (sdata->u.ap.beacon &&
		    (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
		     !(req->flags & NL80211_SCAN_FLAG_AP)))
2000 2001 2002 2003 2004
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2005 2006 2007 2008

	return ieee80211_request_scan(sdata, req);
}

2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
static int
ieee80211_sched_scan_start(struct wiphy *wiphy,
			   struct net_device *dev,
			   struct cfg80211_sched_scan_request *req)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!sdata->local->ops->sched_scan_start)
		return -EOPNOTSUPP;

	return ieee80211_request_sched_scan_start(sdata, req);
}

static int
2023
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2024 2025 2026 2027 2028 2029
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!sdata->local->ops->sched_scan_stop)
		return -EOPNOTSUPP;

2030
	return ieee80211_request_sched_scan_stop(sdata);
2031 2032
}

2033 2034 2035
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2036
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2037 2038 2039 2040 2041
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2042
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2043 2044 2045
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2046
			    struct cfg80211_deauth_request *req)
2047
{
2048
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2049 2050 2051
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2052
			      struct cfg80211_disassoc_request *req)
2053
{
2054
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2055 2056
}

2057 2058 2059
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2060
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2061 2062 2063 2064
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2065
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2066 2067
}

2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078
static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
			      struct ocb_setup *setup)
{
	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
}

static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
{
	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
}

2079 2080 2081 2082 2083
static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
				    int rate[IEEE80211_NUM_BANDS])
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

2084 2085
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2086 2087 2088 2089

	return 0;
}

2090 2091 2092
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2093
	int err;
2094

2095 2096 2097 2098 2099 2100 2101
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

		if (err)
			return err;
	}

2102 2103 2104 2105 2106 2107 2108
	if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
	    (changed & WIPHY_PARAM_DYN_ACK)) {
		s16 coverage_class;

		coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
					wiphy->coverage_class : -1;
		err = drv_set_coverage_class(local, coverage_class);
2109 2110 2111 2112 2113

		if (err)
			return err;
	}

2114
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2115
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2116

2117 2118
		if (err)
			return err;
2119 2120
	}

2121 2122 2123
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2124
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2125 2126 2127 2128
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2129
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2130
	}
2131 2132 2133 2134 2135 2136 2137
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2138
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2139
				  struct wireless_dev *wdev,
2140
				  enum nl80211_tx_power_setting type, int mbm)
2141 2142
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2143
	struct ieee80211_sub_if_data *sdata;
2144 2145
	enum nl80211_tx_power_setting txp_type = type;
	bool update_txp_type = false;
2146

2147 2148 2149 2150 2151 2152
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

		switch (type) {
		case NL80211_TX_POWER_AUTOMATIC:
			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2153
			txp_type = NL80211_TX_POWER_LIMITED;
2154 2155 2156 2157 2158 2159 2160 2161 2162
			break;
		case NL80211_TX_POWER_LIMITED:
		case NL80211_TX_POWER_FIXED:
			if (mbm < 0 || (mbm % 100))
				return -EOPNOTSUPP;
			sdata->user_power_level = MBM_TO_DBM(mbm);
			break;
		}

2163 2164 2165 2166 2167 2168
		if (txp_type != sdata->vif.bss_conf.txpower_type) {
			update_txp_type = true;
			sdata->vif.bss_conf.txpower_type = txp_type;
		}

		ieee80211_recalc_txpower(sdata, update_txp_type);
2169 2170 2171

		return 0;
	}
J
Johannes Berg 已提交
2172

2173
	switch (type) {
2174
	case NL80211_TX_POWER_AUTOMATIC:
2175
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2176
		txp_type = NL80211_TX_POWER_LIMITED;
2177
		break;
2178 2179 2180 2181 2182
	case NL80211_TX_POWER_LIMITED:
	case NL80211_TX_POWER_FIXED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
		local->user_power_level = MBM_TO_DBM(mbm);
2183 2184 2185
		break;
	}

2186
	mutex_lock(&local->iflist_mtx);
2187
	list_for_each_entry(sdata, &local->interfaces, list) {
2188
		sdata->user_power_level = local->user_power_level;
2189 2190 2191 2192
		if (txp_type != sdata->vif.bss_conf.txpower_type)
			update_txp_type = true;
		sdata->vif.bss_conf.txpower_type = txp_type;
	}
2193
	list_for_each_entry(sdata, &local->interfaces, list)
2194
		ieee80211_recalc_txpower(sdata, update_txp_type);
2195
	mutex_unlock(&local->iflist_mtx);
2196 2197 2198 2199

	return 0;
}

2200 2201 2202
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2203 2204
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2205
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2206

2207 2208 2209
	if (local->ops->get_txpower)
		return drv_get_txpower(local, sdata, dbm);

2210 2211 2212 2213
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2214 2215 2216 2217

	return 0;
}

J
Johannes Berg 已提交
2218
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2219
				  const u8 *addr)
J
Johannes Berg 已提交
2220 2221 2222 2223 2224 2225 2226 2227
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);

	return 0;
}

J
Johannes Berg 已提交
2228 2229 2230 2231 2232 2233 2234
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2235
#ifdef CONFIG_NL80211_TESTMODE
2236 2237 2238
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2239 2240
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2241
	struct ieee80211_vif *vif = NULL;
2242 2243 2244 2245

	if (!local->ops->testmode_cmd)
		return -EOPNOTSUPP;

2246 2247 2248 2249 2250 2251 2252 2253 2254
	if (wdev) {
		struct ieee80211_sub_if_data *sdata;

		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
		if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
			vif = &sdata->vif;
	}

	return local->ops->testmode_cmd(&local->hw, vif, data, len);
2255
}
W
Wey-Yi Guy 已提交
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268

static int ieee80211_testmode_dump(struct wiphy *wiphy,
				   struct sk_buff *skb,
				   struct netlink_callback *cb,
				   void *data, int len)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (!local->ops->testmode_dump)
		return -EOPNOTSUPP;

	return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
}
2269 2270
#endif

2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356
int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
				enum ieee80211_smps_mode smps_mode)
{
	struct sta_info *sta;
	enum ieee80211_smps_mode old_req;
	int i;

	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
		return -EINVAL;

	if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
		return 0;

	old_req = sdata->u.ap.req_smps;
	sdata->u.ap.req_smps = smps_mode;

	/* AUTOMATIC doesn't mean much for AP - don't allow it */
	if (old_req == smps_mode ||
	    smps_mode == IEEE80211_SMPS_AUTOMATIC)
		return 0;

	 /* If no associated stations, there's no need to do anything */
	if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
		sdata->smps_mode = smps_mode;
		ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
		return 0;
	}

	ht_dbg(sdata,
	       "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
	for (i = 0; i < STA_HASH_SIZE; i++) {
		for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
				lockdep_is_held(&sdata->local->sta_mtx));
		     sta;
		     sta = rcu_dereference_protected(sta->hnext,
				lockdep_is_held(&sdata->local->sta_mtx))) {
			/*
			 * Only stations associated to our AP and
			 * associated VLANs
			 */
			if (sta->sdata->bss != &sdata->u.ap)
				continue;

			/* This station doesn't support MIMO - skip it */
			if (sta_info_tx_streams(sta) == 1)
				continue;

			/*
			 * Don't wake up a STA just to send the action frame
			 * unless we are getting more restrictive.
			 */
			if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
			    !ieee80211_smps_is_restrictive(sta->known_smps_mode,
							   smps_mode)) {
				ht_dbg(sdata,
				       "Won't send SMPS to sleeping STA %pM\n",
				       sta->sta.addr);
				continue;
			}

			/*
			 * If the STA is not authorized, wait until it gets
			 * authorized and the action frame will be sent then.
			 */
			if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
				continue;

			ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
			ieee80211_send_smps_action(sdata, smps_mode,
						   sta->sta.addr,
						   sdata->vif.bss_conf.bssid);
		}
	}
	mutex_unlock(&sdata->local->sta_mtx);

	sdata->smps_mode = smps_mode;
	ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);

	return 0;
}

int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
				 enum ieee80211_smps_mode smps_mode)
2357 2358 2359 2360 2361
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

2362
	lockdep_assert_held(&sdata->wdev.mtx);
2363

2364 2365 2366
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2367 2368 2369 2370 2371 2372 2373 2374 2375
	old_req = sdata->u.mgd.req_smps;
	sdata->u.mgd.req_smps = smps_mode;

	if (old_req == smps_mode &&
	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
		return 0;

	/*
	 * If not associated, or current association is not an HT
2376 2377
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2378 2379
	 */
	if (!sdata->u.mgd.associated ||
2380
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381 2382
		return 0;

2383
	ap = sdata->u.mgd.associated->bssid;
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400

	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
		if (sdata->u.mgd.powersave)
			smps_mode = IEEE80211_SMPS_DYNAMIC;
		else
			smps_mode = IEEE80211_SMPS_OFF;
	}

	/* send SM PS frame to AP */
	err = ieee80211_send_smps_action(sdata, smps_mode,
					 ap, ap);
	if (err)
		sdata->u.mgd.req_smps = old_req;

	return err;
}

J
Johannes Berg 已提交
2401 2402 2403 2404 2405 2406
static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
				    bool enabled, int timeout)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

2407
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408 2409
		return -EOPNOTSUPP;

J
Johannes Berg 已提交
2410 2411 2412 2413
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2414
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2415 2416 2417
		return 0;

	sdata->u.mgd.powersave = enabled;
2418
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2419

2420
	/* no change, but if automatic follow powersave */
2421
	sdata_lock(sdata);
2422
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423
	sdata_unlock(sdata);
2424

J
Johannes Berg 已提交
2425 2426 2427 2428
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
2429
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2430 2431 2432 2433

	return 0;
}

2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449
static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
					 struct net_device *dev,
					 s32 rssi_thold, u32 rssi_hyst)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_vif *vif = &sdata->vif;
	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;

	if (rssi_thold == bss_conf->cqm_rssi_thold &&
	    rssi_hyst == bss_conf->cqm_rssi_hyst)
		return 0;

	bss_conf->cqm_rssi_thold = rssi_thold;
	bss_conf->cqm_rssi_hyst = rssi_hyst;

	/* tell the driver upon association, unless already associated */
2450 2451
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452 2453 2454 2455 2456
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2457 2458 2459 2460 2461 2462 2463
static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
				      struct net_device *dev,
				      const u8 *addr,
				      const struct cfg80211_bitrate_mask *mask)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2464
	int i, ret;
2465

2466 2467 2468
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2469 2470 2471 2472 2473
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
J
Johannes Berg 已提交
2474

2475
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476 2477 2478
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2479
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480 2481
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2482 2483 2484 2485 2486 2487 2488 2489 2490 2491

		sdata->rc_has_mcs_mask[i] = false;
		if (!sband)
			continue;

		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
				sdata->rc_has_mcs_mask[i] = true;
				break;
			}
2492
	}
J
Johannes Berg 已提交
2493

2494
	return 0;
J
Johannes Berg 已提交
2495 2496
}

2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548
static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
					   struct ieee80211_roc_work *new_roc,
					   struct ieee80211_roc_work *cur_roc)
{
	unsigned long j = jiffies;
	unsigned long cur_roc_end = cur_roc->hw_start_time +
				    msecs_to_jiffies(cur_roc->duration);
	struct ieee80211_roc_work *next_roc;
	int new_dur;

	if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
		return false;

	if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
		return false;

	ieee80211_handle_roc_started(new_roc);

	new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);

	/* cur_roc is long enough - add new_roc to the dependents list. */
	if (new_dur <= 0) {
		list_add_tail(&new_roc->list, &cur_roc->dependents);
		return true;
	}

	new_roc->duration = new_dur;

	/*
	 * if cur_roc was already coalesced before, we might
	 * want to extend the next roc instead of adding
	 * a new one.
	 */
	next_roc = list_entry(cur_roc->list.next,
			      struct ieee80211_roc_work, list);
	if (&next_roc->list != &local->roc_list &&
	    next_roc->chan == new_roc->chan &&
	    next_roc->sdata == new_roc->sdata &&
	    !WARN_ON(next_roc->started)) {
		list_add_tail(&new_roc->list, &next_roc->dependents);
		next_roc->duration = max(next_roc->duration,
					 new_roc->duration);
		next_roc->type = max(next_roc->type, new_roc->type);
		return true;
	}

	/* add right after cur_roc */
	list_add(&new_roc->list, &cur_roc->list);

	return true;
}

2549 2550 2551 2552
static int ieee80211_start_roc_work(struct ieee80211_local *local,
				    struct ieee80211_sub_if_data *sdata,
				    struct ieee80211_channel *channel,
				    unsigned int duration, u64 *cookie,
2553 2554
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2555 2556 2557
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2558 2559 2560 2561
	int ret;

	lockdep_assert_held(&local->mtx);

2562 2563 2564
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2565 2566 2567 2568
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580
	/*
	 * If the duration is zero, then the driver
	 * wouldn't actually do anything. Set it to
	 * 10 for now.
	 *
	 * TODO: cancel the off-channel operation
	 *       when we get the SKB's TX status and
	 *       the wait time was zero before.
	 */
	if (!duration)
		duration = 10;

2581 2582 2583 2584
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2585
	roc->type = type;
2586 2587 2588 2589 2590
	roc->mgmt_tx_cookie = (unsigned long)txskb;
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
		/* local->mtx protects this */
		local->roc_cookie_counter++;
		roc->cookie = local->roc_cookie_counter;
		/* wow, you wrapped 64 bits ... more likely a bug */
		if (WARN_ON(roc->cookie == 0)) {
			roc->cookie = 1;
			local->roc_cookie_counter++;
		}
		*cookie = roc->cookie;
	} else {
		*cookie = (unsigned long)txskb;
	}

2609
	/* if there's one pending or we're scanning, queue this one */
2610
	if (!list_empty(&local->roc_list) ||
2611
	    local->scanning || ieee80211_is_radar_required(local))
2612 2613 2614 2615 2616 2617 2618 2619 2620 2621
		goto out_check_combine;

	/* if not HW assist, just queue & schedule work */
	if (!local->ops->remain_on_channel) {
		ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
		goto out_queue;
	}

	/* otherwise actually kick it off here (for error handling) */

2622
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2623
	if (ret) {
2624 2625
		kfree(roc);
		return ret;
2626 2627
	}

2628 2629 2630 2631 2632
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2633
		if (tmp->chan != channel || tmp->sdata != sdata)
2634 2635 2636 2637 2638 2639 2640
			continue;

		/*
		 * Extend this ROC if possible:
		 *
		 * If it hasn't started yet, just increase the duration
		 * and add the new one to the list of dependents.
2641 2642
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2643 2644 2645 2646
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2647
			tmp->type = max(tmp->type, roc->type);
2648 2649 2650 2651 2652 2653 2654 2655 2656
			queued = true;
			break;
		}

		/* If it has already started, it's more difficult ... */
		if (local->ops->remain_on_channel) {
			/*
			 * In the offloaded ROC case, if it hasn't begun, add
			 * this new one to the dependent list to be handled
2657
			 * when the master one begins. If it has begun,
2658 2659
			 * check that there's still a minimum time left and
			 * if so, start this one, transmitting the frame, but
2660
			 * add it to the list directly after this one with
2661 2662 2663 2664 2665 2666
			 * a reduced time so we'll ask the driver to execute
			 * it right after finishing the previous one, in the
			 * hope that it'll also be executed right afterwards,
			 * effectively extending the old one.
			 * If there's no minimum time left, just add it to the
			 * normal list.
2667 2668
			 * TODO: the ROC type is ignored here, assuming that it
			 * is better to immediately use the current ROC.
2669 2670 2671 2672 2673 2674 2675
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

2676
			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709
				queued = true;
		} else if (del_timer_sync(&tmp->work.timer)) {
			unsigned long new_end;

			/*
			 * In the software ROC case, cancel the timer, if
			 * that fails then the finish work is already
			 * queued/pending and thus we queue the new ROC
			 * normally, if that succeeds then we can extend
			 * the timer duration and TX the frame (if any.)
			 */

			list_add_tail(&roc->list, &tmp->dependents);
			queued = true;

			new_end = jiffies + msecs_to_jiffies(roc->duration);

			/* ok, it was started & we canceled timer */
			if (time_after(new_end, tmp->work.timer.expires))
				mod_timer(&tmp->work.timer, new_end);
			else
				add_timer(&tmp->work.timer);

			ieee80211_handle_roc_started(roc);
		}
		break;
	}

 out_queue:
	if (!queued)
		list_add_tail(&roc->list, &local->roc_list);

	return 0;
2710 2711
}

2712
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2713
				       struct wireless_dev *wdev,
2714 2715 2716 2717
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2718
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2719
	struct ieee80211_local *local = sdata->local;
2720
	int ret;
2721

2722
	mutex_lock(&local->mtx);
2723
	ret = ieee80211_start_roc_work(local, sdata, chan,
2724 2725
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2726
	mutex_unlock(&local->mtx);
2727

2728
	return ret;
2729 2730
}

2731 2732
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2733
{
2734
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2735 2736
	int ret;

2737 2738
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2739 2740 2741
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2742
			if (!mgmt_tx && dep->cookie != cookie)
2743 2744 2745 2746 2747 2748 2749
				continue;
			else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
				continue;
			/* found dependent item -- just remove it */
			list_del(&dep->list);
			mutex_unlock(&local->mtx);

2750
			ieee80211_roc_notify_destroy(dep, true);
2751 2752 2753
			return 0;
		}

2754
		if (!mgmt_tx && roc->cookie != cookie)
2755 2756 2757
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2758

2759 2760 2761
		found = roc;
		break;
	}
2762

2763 2764 2765 2766
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2767

2768 2769 2770 2771 2772 2773 2774
	/*
	 * We found the item to cancel, so do that. Note that it
	 * may have dependents, which we also cancel (and send
	 * the expired signal for.) Not doing so would be quite
	 * tricky here, but we may need to fix it later.
	 */

2775 2776 2777 2778 2779 2780 2781 2782
	if (local->ops->remain_on_channel) {
		if (found->started) {
			ret = drv_cancel_remain_on_channel(local);
			if (WARN_ON_ONCE(ret)) {
				mutex_unlock(&local->mtx);
				return ret;
			}
		}
2783

2784
		list_del(&found->list);
2785

2786 2787
		if (found->started)
			ieee80211_start_next_roc(local);
2788
		mutex_unlock(&local->mtx);
2789

2790
		ieee80211_roc_notify_destroy(found, true);
2791 2792 2793 2794
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2795 2796 2797

		mutex_unlock(&local->mtx);

2798 2799
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2800 2801
		WARN_ON(!found->to_be_freed);
		kfree(found);
2802
	}
2803

2804
	return 0;
2805 2806
}

2807
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2808
					      struct wireless_dev *wdev,
2809
					      u64 cookie)
2810
{
2811
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2812
	struct ieee80211_local *local = sdata->local;
2813

2814
	return ieee80211_cancel_roc(local, cookie, false);
2815 2816
}

2817 2818
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2819 2820
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2821 2822 2823 2824 2825
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2826 2827 2828 2829 2830
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2831 2832 2833 2834 2835 2836 2837 2838

	/* whatever, but channel contexts should not complain about that one */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = local->rx_chains;

	err = ieee80211_vif_use_channel(sdata, chandef,
					IEEE80211_CHANCTX_SHARED);
	if (err)
2839
		goto out_unlock;
2840 2841

	ieee80211_queue_delayed_work(&sdata->local->hw,
2842 2843
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2844

2845 2846 2847
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2848 2849
}

2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905
static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
{
	struct cfg80211_beacon_data *new_beacon;
	u8 *pos;
	int len;

	len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
	      beacon->proberesp_ies_len + beacon->assocresp_ies_len +
	      beacon->probe_resp_len;

	new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
	if (!new_beacon)
		return NULL;

	pos = (u8 *)(new_beacon + 1);
	if (beacon->head_len) {
		new_beacon->head_len = beacon->head_len;
		new_beacon->head = pos;
		memcpy(pos, beacon->head, beacon->head_len);
		pos += beacon->head_len;
	}
	if (beacon->tail_len) {
		new_beacon->tail_len = beacon->tail_len;
		new_beacon->tail = pos;
		memcpy(pos, beacon->tail, beacon->tail_len);
		pos += beacon->tail_len;
	}
	if (beacon->beacon_ies_len) {
		new_beacon->beacon_ies_len = beacon->beacon_ies_len;
		new_beacon->beacon_ies = pos;
		memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
		pos += beacon->beacon_ies_len;
	}
	if (beacon->proberesp_ies_len) {
		new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
		new_beacon->proberesp_ies = pos;
		memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
		pos += beacon->proberesp_ies_len;
	}
	if (beacon->assocresp_ies_len) {
		new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
		new_beacon->assocresp_ies = pos;
		memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
		pos += beacon->assocresp_ies_len;
	}
	if (beacon->probe_resp_len) {
		new_beacon->probe_resp_len = beacon->probe_resp_len;
		beacon->probe_resp = pos;
		memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
		pos += beacon->probe_resp_len;
	}

	return new_beacon;
}

2906
void ieee80211_csa_finish(struct ieee80211_vif *vif)
2907
{
2908
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2909

2910 2911 2912 2913
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
2914

2915 2916
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
2917
{
2918
	int err;
2919

2920 2921
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
2922 2923
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
					      NULL);
2924 2925 2926
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

2927
		if (err < 0)
2928 2929
			return err;
		*changed |= err;
2930 2931
		break;
	case NL80211_IFTYPE_ADHOC:
2932 2933
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
2934 2935
			return err;
		*changed |= err;
2936
		break;
2937 2938 2939 2940
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
2941 2942
			return err;
		*changed |= err;
2943 2944
		break;
#endif
2945 2946
	default:
		WARN_ON(1);
2947 2948 2949 2950 2951 2952
		return -EINVAL;
	}

	return 0;
}

2953
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2954 2955 2956 2957 2958 2959 2960
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);
2961
	lockdep_assert_held(&local->chanctx_mtx);
2962

2963 2964 2965 2966 2967 2968
	/*
	 * using reservation isn't immediate as it may be deferred until later
	 * with multi-vif. once reservation is complete it will re-schedule the
	 * work with no reserved_chanctx so verify chandef to check if it
	 * completed successfully
	 */
2969

2970 2971 2972 2973 2974 2975 2976 2977 2978
	if (sdata->reserved_chanctx) {
		/*
		 * with multi-vif csa driver may call ieee80211_csa_finish()
		 * many times while waiting for other interfaces to use their
		 * reservations
		 */
		if (sdata->reserved_ready)
			return 0;

2979
		return ieee80211_vif_use_reserved_context(sdata);
2980
	}
2981

2982 2983 2984 2985
	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
					&sdata->csa_chandef))
		return -EINVAL;

2986 2987 2988 2989
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
2990
		return err;
2991

2992
	ieee80211_bss_info_change_notify(sdata, changed);
2993

2994 2995 2996 2997 2998
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}
2999

3000 3001 3002 3003 3004 3005
	err = drv_post_channel_switch(sdata);
	if (err)
		return err;

	cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);

3006 3007 3008 3009 3010 3011 3012 3013 3014 3015
	return 0;
}

static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
{
	if (__ieee80211_csa_finalize(sdata)) {
		sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
		cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
				    GFP_KERNEL);
	}
3016 3017 3018 3019 3020 3021 3022
}

void ieee80211_csa_finalize_work(struct work_struct *work)
{
	struct ieee80211_sub_if_data *sdata =
		container_of(work, struct ieee80211_sub_if_data,
			     csa_finalize_work);
3023
	struct ieee80211_local *local = sdata->local;
3024 3025

	sdata_lock(sdata);
3026
	mutex_lock(&local->mtx);
3027
	mutex_lock(&local->chanctx_mtx);
3028

3029 3030 3031 3032 3033 3034 3035 3036
	/* AP might have been stopped while waiting for the lock. */
	if (!sdata->vif.csa_active)
		goto unlock;

	if (!ieee80211_sdata_running(sdata))
		goto unlock;

	ieee80211_csa_finalize(sdata);
3037 3038

unlock:
3039
	mutex_unlock(&local->chanctx_mtx);
3040
	mutex_unlock(&local->mtx);
3041
	sdata_unlock(sdata);
3042 3043
}

3044 3045 3046
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3047
{
3048
	struct ieee80211_csa_settings csa = {};
3049
	int err;
3050 3051 3052

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3053 3054 3055 3056 3057
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076
		/*
		 * With a count of 0, we don't have to wait for any
		 * TBTT before switching, so complete the CSA
		 * immediately.  In theory, with a count == 1 we
		 * should delay the switch until just before the next
		 * TBTT, but that would complicate things so we switch
		 * immediately too.  If we would delay the switch
		 * until the next TBTT, we would have to set the probe
		 * response here.
		 *
		 * TODO: A channel switch with count <= 1 without
		 * sending a CSA action frame is kind of useless,
		 * because the clients won't know we're changing
		 * channels.  The action frame must be implemented
		 * either here or in the userspace.
		 */
		if (params->count <= 1)
			break;

3077 3078 3079 3080 3081
		if ((params->n_counter_offsets_beacon >
		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
		    (params->n_counter_offsets_presp >
		     IEEE80211_MAX_CSA_COUNTERS_NUM))
			return -EINVAL;
3082

3083 3084 3085 3086 3087
		csa.counter_offsets_beacon = params->counter_offsets_beacon;
		csa.counter_offsets_presp = params->counter_offsets_presp;
		csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
		csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
		csa.count = params->count;
3088

3089
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3090 3091 3092 3093
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3094
		*changed |= err;
3095

3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122
		break;
	case NL80211_IFTYPE_ADHOC:
		if (!sdata->vif.bss_conf.ibss_joined)
			return -EINVAL;

		if (params->chandef.width != sdata->u.ibss.chandef.width)
			return -EINVAL;

		switch (params->chandef.width) {
		case NL80211_CHAN_WIDTH_40:
			if (cfg80211_get_chandef_type(&params->chandef) !=
			    cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
				return -EINVAL;
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
		case NL80211_CHAN_WIDTH_20_NOHT:
		case NL80211_CHAN_WIDTH_20:
			break;
		default:
			return -EINVAL;
		}

		/* changes into another band are not supported */
		if (sdata->u.ibss.chandef.chan->band !=
		    params->chandef.chan->band)
			return -EINVAL;

3123 3124 3125 3126 3127
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3128
			*changed |= err;
3129 3130 3131 3132
		}

		ieee80211_send_action_csa(sdata, params);

3133
		break;
3134
#ifdef CONFIG_MAC80211_MESH
3135 3136
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3137 3138 3139 3140 3141 3142 3143 3144 3145

		if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
			return -EINVAL;

		/* changes into another band are not supported */
		if (sdata->vif.bss_conf.chandef.chan->band !=
		    params->chandef.chan->band)
			return -EINVAL;

3146
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3147
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3148 3149 3150 3151 3152
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3153

3154 3155 3156 3157 3158 3159 3160
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_mesh_csa_beacon(sdata, params);
			if (err < 0) {
				ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
				return err;
			}
3161
			*changed |= err;
3162
		}
3163 3164 3165 3166

		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
			ieee80211_send_action_csa(sdata, params);

3167
		break;
3168
		}
3169
#endif
3170 3171 3172 3173
	default:
		return -EOPNOTSUPP;
	}

3174 3175 3176
	return 0;
}

3177 3178 3179
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3180 3181 3182
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3183
	struct ieee80211_channel_switch ch_switch;
3184
	struct ieee80211_chanctx_conf *conf;
3185
	struct ieee80211_chanctx *chanctx;
3186 3187
	u32 changed = 0;
	int err;
3188 3189

	sdata_assert_lock(sdata);
3190
	lockdep_assert_held(&local->mtx);
3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201

	if (!list_empty(&local->roc_list) || local->scanning)
		return -EBUSY;

	if (sdata->wdev.cac_started)
		return -EBUSY;

	if (cfg80211_chandef_identical(&params->chandef,
				       &sdata->vif.bss_conf.chandef))
		return -EINVAL;

3202 3203 3204 3205
	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

3206 3207 3208 3209
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
3210 3211
		err = -EBUSY;
		goto out;
3212 3213
	}

3214
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3215 3216 3217
	if (!chanctx) {
		err = -EBUSY;
		goto out;
3218 3219
	}

3220 3221 3222 3223 3224 3225
	ch_switch.timestamp = 0;
	ch_switch.device_timestamp = 0;
	ch_switch.block_tx = params->block_tx;
	ch_switch.chandef = params->chandef;
	ch_switch.count = params->count;

3226 3227 3228 3229
	err = drv_pre_channel_switch(sdata, &ch_switch);
	if (err)
		goto out;

3230 3231 3232 3233 3234
	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
					    chanctx->mode,
					    params->radar_required);
	if (err)
		goto out;
3235

3236 3237 3238 3239 3240 3241
	/* if reservation is invalid then this will fail */
	err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3242 3243

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3244 3245 3246 3247
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3248

3249
	sdata->csa_chandef = params->chandef;
3250
	sdata->csa_block_tx = params->block_tx;
3251 3252
	sdata->vif.csa_active = true;

3253
	if (sdata->csa_block_tx)
3254 3255
		ieee80211_stop_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
3256

3257 3258 3259
	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
					  params->count);

3260 3261 3262 3263 3264 3265 3266
	if (changed) {
		ieee80211_bss_info_change_notify(sdata, changed);
		drv_channel_switch_beacon(sdata, &params->chandef);
	} else {
		/* if the beacon didn't change, we can finalize immediately */
		ieee80211_csa_finalize(sdata);
	}
3267

3268 3269 3270
out:
	mutex_unlock(&local->chanctx_mtx);
	return err;
3271 3272
}

3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286
int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			     struct cfg80211_csa_settings *params)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

	mutex_lock(&local->mtx);
	err = __ieee80211_channel_switch(wiphy, dev, params);
	mutex_unlock(&local->mtx);

	return err;
}

3287
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3288 3289
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3290
{
3291
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3292 3293 3294
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct sta_info *sta;
3295
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3296
	bool need_offchan = false;
3297
	u32 flags;
3298
	int ret;
3299
	u8 *data;
3300

3301
	if (params->dont_wait_for_ack)
3302 3303 3304 3305 3306
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3307
	if (params->no_cck)
3308 3309
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3310 3311
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3312 3313 3314 3315 3316 3317 3318 3319 3320 3321
		if (!sdata->vif.bss_conf.ibss_joined)
			need_offchan = true;
		/* fall through */
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		if (ieee80211_vif_is_mesh(&sdata->vif) &&
		    !sdata->u.mesh.mesh_id_len)
			need_offchan = true;
		/* fall through */
#endif
3322 3323 3324
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3325 3326 3327 3328
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3329
		if (!ieee80211_is_action(mgmt->frame_control) ||
3330
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3331 3332
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3333 3334 3335 3336 3337 3338 3339 3340
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3341
	case NL80211_IFTYPE_P2P_CLIENT:
3342 3343
		if (!sdata->u.mgd.associated)
			need_offchan = true;
3344
		break;
3345 3346 3347
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3348 3349 3350 3351
	default:
		return -EOPNOTSUPP;
	}

3352 3353 3354
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3355
	if (need_offchan && !params->chan)
3356 3357
		return -EINVAL;

3358 3359 3360 3361
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3362 3363 3364 3365 3366
		struct ieee80211_chanctx_conf *chanctx_conf;

		rcu_read_lock();
		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);

3367
		if (chanctx_conf) {
3368 3369 3370 3371
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3372 3373 3374 3375
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3376
			need_offchan = true;
3377
		}
J
Johannes Berg 已提交
3378
		rcu_read_unlock();
3379 3380
	}

3381
	if (need_offchan && !params->offchan) {
3382 3383 3384 3385
		ret = -EBUSY;
		goto out_unlock;
	}

3386
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3387 3388 3389 3390
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3391 3392
	skb_reserve(skb, local->hw.extra_tx_headroom);

3393 3394 3395 3396 3397 3398 3399 3400 3401
	data = skb_put(skb, params->len);
	memcpy(data, params->buf, params->len);

	/* Update CSA counters */
	if (sdata->vif.csa_active &&
	    (sdata->vif.type == NL80211_IFTYPE_AP ||
	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
	    params->n_csa_offsets) {
		int i;
3402
		struct beacon_data *beacon = NULL;
3403

3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418
		rcu_read_lock();

		if (sdata->vif.type == NL80211_IFTYPE_AP)
			beacon = rcu_dereference(sdata->u.ap.beacon);
		else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
			beacon = rcu_dereference(sdata->u.ibss.presp);
		else if (ieee80211_vif_is_mesh(&sdata->vif))
			beacon = rcu_dereference(sdata->u.mesh.beacon);

		if (beacon)
			for (i = 0; i < params->n_csa_offsets; i++)
				data[params->csa_offsets[i]] =
					beacon->csa_current_counter;

		rcu_read_unlock();
3419
	}
3420 3421 3422 3423 3424

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3425
	if (!need_offchan) {
3426
		*cookie = (unsigned long) skb;
3427
		ieee80211_tx_skb(sdata, skb);
3428 3429
		ret = 0;
		goto out_unlock;
3430 3431
	}

3432 3433
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3434 3435 3436
	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
3437

3438
	/* This will handle all kinds of coalescing and immediate TX */
3439 3440
	ret = ieee80211_start_roc_work(local, sdata, params->chan,
				       params->wait, cookie, skb,
3441
				       IEEE80211_ROC_TYPE_MGMT_TX);
3442 3443 3444 3445 3446
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
3447 3448
}

3449
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3450
					 struct wireless_dev *wdev,
3451 3452
					 u64 cookie)
{
3453
	struct ieee80211_local *local = wiphy_priv(wiphy);
3454

3455
	return ieee80211_cancel_roc(local, cookie, true);
3456 3457
}

3458
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3459
					  struct wireless_dev *wdev,
3460 3461 3462 3463
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

3464 3465 3466 3467 3468 3469
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
3470

3471 3472 3473
		if (!local->open_count)
			break;

3474 3475 3476 3477 3478
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
3479 3480
}

3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497
static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (local->started)
		return -EOPNOTSUPP;

	return drv_set_antenna(local, tx_ant, rx_ant);
}

static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	return drv_get_antenna(local, tx_ant, rx_ant);
}

3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512
static int ieee80211_set_rekey_data(struct wiphy *wiphy,
				    struct net_device *dev,
				    struct cfg80211_gtk_rekey_data *data)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!local->ops->set_rekey_data)
		return -EOPNOTSUPP;

	drv_set_rekey_data(local, sdata, data);

	return 0;
}

J
Johannes Berg 已提交
3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524
static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *peer, u64 *cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_qos_hdr *nullfunc;
	struct sk_buff *skb;
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;
J
Johannes Berg 已提交
3525 3526
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
J
Johannes Berg 已提交
3527 3528

	rcu_read_lock();
J
Johannes Berg 已提交
3529 3530 3531 3532 3533
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
3534
	band = chanctx_conf->def.chan->band;
3535
	sta = sta_info_get_bss(sdata, peer);
3536
	if (sta) {
3537
		qos = sta->sta.wme;
3538 3539
	} else {
		rcu_read_unlock();
J
Johannes Berg 已提交
3540
		return -ENOLINK;
3541
	}
J
Johannes Berg 已提交
3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554

	if (qos) {
		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
				 IEEE80211_STYPE_QOS_NULLFUNC |
				 IEEE80211_FCTL_FROMDS);
	} else {
		size -= 2;
		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
				 IEEE80211_STYPE_NULLFUNC |
				 IEEE80211_FCTL_FROMDS);
	}

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
J
Johannes Berg 已提交
3555 3556
	if (!skb) {
		rcu_read_unlock();
J
Johannes Berg 已提交
3557
		return -ENOMEM;
J
Johannes Berg 已提交
3558
	}
J
Johannes Berg 已提交
3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575

	skb->dev = dev;

	skb_reserve(skb, local->hw.extra_tx_headroom);

	nullfunc = (void *) skb_put(skb, size);
	nullfunc->frame_control = fc;
	nullfunc->duration_id = 0;
	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
	nullfunc->seq_ctrl = 0;

	info = IEEE80211_SKB_CB(skb);

	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3576
	info->band = band;
J
Johannes Berg 已提交
3577 3578 3579 3580 3581 3582 3583

	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
	skb->priority = 7;
	if (qos)
		nullfunc->qos_ctrl = cpu_to_le16(7);

	local_bh_disable();
3584
	ieee80211_xmit(sdata, skb);
J
Johannes Berg 已提交
3585
	local_bh_enable();
J
Johannes Berg 已提交
3586
	rcu_read_unlock();
J
Johannes Berg 已提交
3587 3588 3589 3590 3591

	*cookie = (unsigned long) skb;
	return 0;
}

3592 3593 3594
static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     struct cfg80211_chan_def *chandef)
3595
{
J
Johannes Berg 已提交
3596
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3597
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
3598
	struct ieee80211_chanctx_conf *chanctx_conf;
3599
	int ret = -ENODATA;
J
Johannes Berg 已提交
3600 3601

	rcu_read_lock();
3602 3603
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
3604
		*chandef = sdata->vif.bss_conf.chandef;
3605 3606 3607 3608 3609 3610 3611
		ret = 0;
	} else if (local->open_count > 0 &&
		   local->open_count == local->monitors &&
		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
		if (local->use_chanctx)
			*chandef = local->monitor_chandef;
		else
3612
			*chandef = local->_oper_chandef;
3613
		ret = 0;
J
Johannes Berg 已提交
3614 3615
	}
	rcu_read_unlock();
3616

3617
	return ret;
3618 3619
}

3620 3621 3622 3623 3624 3625 3626
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643
static int ieee80211_set_qos_map(struct wiphy *wiphy,
				 struct net_device *dev,
				 struct cfg80211_qos_map *qos_map)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct mac80211_qos_map *new_qos_map, *old_qos_map;

	if (qos_map) {
		new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
		if (!new_qos_map)
			return -ENOMEM;
		memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
	} else {
		/* A NULL qos_map was passed to disable QoS mapping */
		new_qos_map = NULL;
	}

3644
	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3645 3646 3647 3648 3649 3650 3651
	rcu_assign_pointer(sdata->qos_map, new_qos_map);
	if (old_qos_map)
		kfree_rcu(old_qos_map, rcu_head);

	return 0;
}

3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666
static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
				      struct net_device *dev,
				      struct cfg80211_chan_def *chandef)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int ret;
	u32 changed = 0;

	ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
	if (ret == 0)
		ieee80211_bss_info_change_notify(sdata, changed);

	return ret;
}

3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718
static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
			       u8 tsid, const u8 *peer, u8 up,
			       u16 admitted_time)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
	int ac = ieee802_1d_to_ac[up];

	if (sdata->vif.type != NL80211_IFTYPE_STATION)
		return -EOPNOTSUPP;

	if (!(sdata->wmm_acm & BIT(up)))
		return -EINVAL;

	if (ifmgd->tx_tspec[ac].admitted_time)
		return -EBUSY;

	if (admitted_time) {
		ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
		ifmgd->tx_tspec[ac].tsid = tsid;
		ifmgd->tx_tspec[ac].up = up;
	}

	return 0;
}

static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
			       u8 tsid, const u8 *peer)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
	struct ieee80211_local *local = wiphy_priv(wiphy);
	int ac;

	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
		struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];

		/* skip unused entries */
		if (!tx_tspec->admitted_time)
			continue;

		if (tx_tspec->tsid != tsid)
			continue;

		/* due to this new packets will be reassigned to non-ACM ACs */
		tx_tspec->up = -1;

		/* Make sure that all packets have been sent to avoid to
		 * restore the QoS params on packets that are still on the
		 * queues.
		 */
		synchronize_net();
3719
		ieee80211_flush_queues(local, sdata, false);
3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736

		/* restore the normal QoS parameters
		 * (unconditionally to avoid races)
		 */
		tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
		tx_tspec->downgraded = false;
		ieee80211_sta_handle_tspec_ac_params(sdata);

		/* finally clear all the data */
		memset(tx_tspec, 0, sizeof(*tx_tspec));

		return 0;
	}

	return -ENOENT;
}

3737
const struct cfg80211_ops mac80211_config_ops = {
3738 3739
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3740
	.change_virtual_intf = ieee80211_change_iface,
3741 3742
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3743 3744
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3745
	.get_key = ieee80211_get_key,
3746
	.set_default_key = ieee80211_config_default_key,
3747
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3748 3749 3750
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3751 3752 3753
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3754
	.get_station = ieee80211_get_station,
3755
	.dump_station = ieee80211_dump_station,
3756
	.dump_survey = ieee80211_dump_survey,
3757 3758 3759 3760 3761 3762
#ifdef CONFIG_MAC80211_MESH
	.add_mpath = ieee80211_add_mpath,
	.del_mpath = ieee80211_del_mpath,
	.change_mpath = ieee80211_change_mpath,
	.get_mpath = ieee80211_get_mpath,
	.dump_mpath = ieee80211_dump_mpath,
3763 3764
	.get_mpp = ieee80211_get_mpp,
	.dump_mpp = ieee80211_dump_mpp,
3765 3766
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3767 3768
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3769
#endif
3770 3771
	.join_ocb = ieee80211_join_ocb,
	.leave_ocb = ieee80211_leave_ocb,
3772
	.change_bss = ieee80211_change_bss,
3773
	.set_txq_params = ieee80211_set_txq_params,
3774
	.set_monitor_channel = ieee80211_set_monitor_channel,
3775 3776
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3777
	.scan = ieee80211_scan,
3778 3779
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3780 3781 3782 3783
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3784 3785
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3786
	.set_mcast_rate = ieee80211_set_mcast_rate,
3787
	.set_wiphy_params = ieee80211_set_wiphy_params,
3788 3789
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
3790
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
3791
	.rfkill_poll = ieee80211_rfkill_poll,
3792
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3793
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3794
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
3795
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3796 3797
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3798
	.mgmt_tx = ieee80211_mgmt_tx,
3799
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3800
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3801
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3802 3803
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3804
	.set_rekey_data = ieee80211_set_rekey_data,
3805 3806
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
3807 3808
	.tdls_channel_switch = ieee80211_tdls_channel_switch,
	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
J
Johannes Berg 已提交
3809
	.probe_client = ieee80211_probe_client,
3810
	.set_noack_map = ieee80211_set_noack_map,
3811 3812 3813
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3814
	.get_channel = ieee80211_cfg_get_channel,
3815
	.start_radar_detection = ieee80211_start_radar_detection,
3816
	.channel_switch = ieee80211_channel_switch,
3817
	.set_qos_map = ieee80211_set_qos_map,
3818
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3819 3820
	.add_tx_ts = ieee80211_add_tx_ts,
	.del_tx_ts = ieee80211_del_tx_ts,
3821
};