aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwmc3200wifi/cfg80211.c
blob: a1d45cce0ebcab1f7b92568cafacf0dea4537014 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
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
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
/*
 * Intel Wireless Multicomm 3200 WiFi driver
 *
 * Copyright (C) 2009 Intel Corporation <ilw@linux.intel.com>
 * Samuel Ortiz <samuel.ortiz@intel.com>
 * Zhu Yi <yi.zhu@intel.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/etherdevice.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>
#include <linux/slab.h>
#include <net/cfg80211.h>

#include "iwm.h"
#include "commands.h"
#include "cfg80211.h"
#include "debug.h"

#define RATETAB_ENT(_rate, _rateid, _flags) \
	{								\
		.bitrate	= (_rate),				\
		.hw_value	= (_rateid),				\
		.flags		= (_flags),				\
	}

#define CHAN2G(_channel, _freq, _flags) {			\
	.band			= IEEE80211_BAND_2GHZ,		\
	.center_freq		= (_freq),			\
	.hw_value		= (_channel),			\
	.flags			= (_flags),			\
	.max_antenna_gain	= 0,				\
	.max_power		= 30,				\
}

#define CHAN5G(_channel, _flags) {				\
	.band			= IEEE80211_BAND_5GHZ,		\
	.center_freq		= 5000 + (5 * (_channel)),	\
	.hw_value		= (_channel),			\
	.flags			= (_flags),			\
	.max_antenna_gain	= 0,				\
	.max_power		= 30,				\
}

static struct ieee80211_rate iwm_rates[] = {
	RATETAB_ENT(10,  0x1,   0),
	RATETAB_ENT(20,  0x2,   0),
	RATETAB_ENT(55,  0x4,   0),
	RATETAB_ENT(110, 0x8,   0),
	RATETAB_ENT(60,  0x10,  0),
	RATETAB_ENT(90,  0x20,  0),
	RATETAB_ENT(120, 0x40,  0),
	RATETAB_ENT(180, 0x80,  0),
	RATETAB_ENT(240, 0x100, 0),
	RATETAB_ENT(360, 0x200, 0),
	RATETAB_ENT(480, 0x400, 0),
	RATETAB_ENT(540, 0x800, 0),
};

#define iwm_a_rates		(iwm_rates + 4)
#define iwm_a_rates_size	8
#define iwm_g_rates		(iwm_rates + 0)
#define iwm_g_rates_size	12

static struct ieee80211_channel iwm_2ghz_channels[] = {
	CHAN2G(1, 2412, 0),
	CHAN2G(2, 2417, 0),
	CHAN2G(3, 2422, 0),
	CHAN2G(4, 2427, 0),
	CHAN2G(5, 2432, 0),
	CHAN2G(6, 2437, 0),
	CHAN2G(7, 2442, 0),
	CHAN2G(8, 2447, 0),
	CHAN2G(9, 2452, 0),
	CHAN2G(10, 2457, 0),
	CHAN2G(11, 2462, 0),
	CHAN2G(12, 2467, 0),
	CHAN2G(13, 2472, 0),
	CHAN2G(14, 2484, 0),
};

static struct ieee80211_channel iwm_5ghz_a_channels[] = {
	CHAN5G(34, 0),		CHAN5G(36, 0),
	CHAN5G(38, 0),		CHAN5G(40, 0),
	CHAN5G(42, 0),		CHAN5G(44, 0),
	CHAN5G(46, 0),		CHAN5G(48, 0),
	CHAN5G(52, 0),		CHAN5G(56, 0),
	CHAN5G(60, 0),		CHAN5G(64, 0),
	CHAN5G(100, 0),		CHAN5G(104, 0),
	CHAN5G(108, 0),		CHAN5G(112, 0),
	CHAN5G(116, 0),		CHAN5G(120, 0),
	CHAN5G(124, 0),		CHAN5G(128, 0),
	CHAN5G(132, 0),		CHAN5G(136, 0),
	CHAN5G(140, 0),		CHAN5G(149, 0),
	CHAN5G(153, 0),		CHAN5G(157, 0),
	CHAN5G(161, 0),		CHAN5G(165, 0),
	CHAN5G(184, 0),		CHAN5G(188, 0),
	CHAN5G(192, 0),		CHAN5G(196, 0),
	CHAN5G(200, 0),		CHAN5G(204, 0),
	CHAN5G(208, 0),		CHAN5G(212, 0),
	CHAN5G(216, 0),
};

static struct ieee80211_supported_band iwm_band_2ghz = {
	.channels = iwm_2ghz_channels,
	.n_channels = ARRAY_SIZE(iwm_2ghz_channels),
	.bitrates = iwm_g_rates,
	.n_bitrates = iwm_g_rates_size,
};

static struct ieee80211_supported_band iwm_band_5ghz = {
	.channels = iwm_5ghz_a_channels,
	.n_channels = ARRAY_SIZE(iwm_5ghz_a_channels),
	.bitrates = iwm_a_rates,
	.n_bitrates = iwm_a_rates_size,
};

static int iwm_key_init(struct iwm_key *key, u8 key_index,
			const u8 *mac_addr, struct key_params *params)
{
	key->hdr.key_idx = key_index;
	if (!mac_addr || is_broadcast_ether_addr(mac_addr)) {
		key->hdr.multicast = 1;
		memset(key->hdr.mac, 0xff, ETH_ALEN);
	} else {
		key->hdr.multicast = 0;
		memcpy(key->hdr.mac, mac_addr, ETH_ALEN);
	}

	if (params) {
		if (params->key_len > WLAN_MAX_KEY_LEN ||
		    params->seq_len > IW_ENCODE_SEQ_MAX_SIZE)
			return -EINVAL;

		key->cipher = params->cipher;
		key->key_len = params->key_len;
		key->seq_len = params->seq_len;
		memcpy(key->key, params->key, key->key_len);
		memcpy(key->seq, params->seq, key->seq_len);
	}

	return 0;
}

static int iwm_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
				u8 key_index, const u8 *mac_addr,
				struct key_params *params)
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);
	struct iwm_key *key = &iwm->keys[key_index];
	int ret;

	IWM_DBG_WEXT(iwm, DBG, "Adding key for %pM\n", mac_addr);

	memset(key, 0, sizeof(struct iwm_key));
	ret = iwm_key_init(key, key_index, mac_addr, params);
	if (ret < 0) {
		IWM_ERR(iwm, "Invalid key_params\n");
		return ret;
	}

	return iwm_set_key(iwm, 0, key);
}

static int iwm_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
				u8 key_index, const u8 *mac_addr, void *cookie,
				void (*callback)(void *cookie,
						 struct key_params*))
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);
	struct iwm_key *key = &iwm->keys[key_index];
	struct key_params params;

	IWM_DBG_WEXT(iwm, DBG, "Getting key %d\n", key_index);

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

	params.cipher = key->cipher;
	params.key_len = key->key_len;
	params.seq_len = key->seq_len;
	params.seq = key->seq;
	params.key = key->key;

	callback(cookie, &params);

	return key->key_len ? 0 : -ENOENT;
}


static int iwm_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
				u8 key_index, const u8 *mac_addr)
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);
	struct iwm_key *key = &iwm->keys[key_index];

	if (!iwm->keys[key_index].key_len) {
		IWM_DBG_WEXT(iwm, DBG, "Key %d not used\n", key_index);
		return 0;
	}

	if (key_index == iwm->default_key)
		iwm->default_key = -1;

	return iwm_set_key(iwm, 1, key);
}

static int iwm_cfg80211_set_default_key(struct wiphy *wiphy,
					struct net_device *ndev,
					u8 key_index)
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);

	IWM_DBG_WEXT(iwm, DBG, "Default key index is: %d\n", key_index);

	if (!iwm->keys[key_index].key_len) {
		IWM_ERR(iwm, "Key %d not used\n", key_index);
		return -EINVAL;
	}

	iwm->default_key = key_index;

	return iwm_set_tx_key(iwm, key_index);
}

static int iwm_cfg80211_get_station(struct wiphy *wiphy,
				    struct net_device *ndev,
				    u8 *mac, struct station_info *sinfo)
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);

	if (memcmp(mac, iwm->bssid, ETH_ALEN))
		return -ENOENT;

	sinfo->filled |= STATION_INFO_TX_BITRATE;
	sinfo->txrate.legacy = iwm->rate * 10;

	if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
		sinfo->filled |= STATION_INFO_SIGNAL;
		sinfo->signal = iwm->wstats.qual.level;
	}

	return 0;
}


int iwm_cfg80211_inform_bss(struct iwm_priv *iwm)
{
	struct wiphy *wiphy = iwm_to_wiphy(iwm);
	struct iwm_bss_info *bss, *next;
	struct iwm_umac_notif_bss_info *umac_bss;
	struct ieee80211_mgmt *mgmt;
	struct ieee80211_channel *channel;
	struct ieee80211_supported_band *band;
	s32 signal;
	int freq;

	list_for_each_entry_safe(bss, next, &iwm->bss_list, node) {
		umac_bss = bss->bss;
		mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);

		if (umac_bss->band == UMAC_BAND_2GHZ)
			band = wiphy->bands[IEEE80211_BAND_2GHZ];
		else if (umac_bss->band == UMAC_BAND_5GHZ)
			band = wiphy->bands[IEEE80211_BAND_5GHZ];
		else {
			IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
			return -EINVAL;
		}

		freq = ieee80211_channel_to_frequency(umac_bss->channel);
		channel = ieee80211_get_channel(wiphy, freq);
		signal = umac_bss->rssi * 100;

		if (!cfg80211_inform_bss_frame(wiphy, channel, mgmt,
					       le16_to_cpu(umac_bss->frame_len),
					       signal, GFP_KERNEL))
			return -EINVAL;
	}

	return 0;
}

static int iwm_cfg80211_change_iface(struct wiphy *wiphy,
				     struct net_device *ndev,
				     enum nl80211_iftype type, u32 *flags,
				     struct vif_params *params)
{
	struct wireless_dev *wdev;
	struct iwm_priv *iwm;
	u32 old_mode;

	wdev = ndev->ieee80211_ptr;
	iwm = ndev_to_iwm(ndev);
	old_mode = iwm->conf.mode;

	switch (type) {
	case NL80211_IFTYPE_STATION:
		iwm->conf.mode = UMAC_MODE_BSS;
		break;
	case NL80211_IFTYPE_ADHOC:
		iwm->conf.mode = UMAC_MODE_IBSS;
		break;
	default:
		return -EOPNOTSUPP;
	}

	wdev->iftype = type;

	if ((old_mode == iwm->conf.mode) || !iwm->umac_profile)
		return 0;

	iwm->umac_profile->mode = cpu_to_le32(iwm->conf.mode);

	if (iwm->umac_profile_active)
		iwm_invalidate_mlme_profile(iwm);

	return 0;
}

static int iwm_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
			     struct cfg80211_scan_request *request)
{
	struct iwm_priv *iwm = ndev_to_iwm(ndev);
	int ret;

	if (!test_bit(IWM_STATUS_READY, &iwm->status)) {
		IWM_ERR(iwm, "Scan while device is not ready\n");
		return -EIO;
	}

	if (test_bit(IWM_STATUS_SCANNING, &iwm->status)) {
		IWM_ERR(iwm, "Scanning already\n");
		return -EAGAIN;
	}

	if (test_bit(IWM_STATUS_SCAN_ABORTING, &iwm->status)) {
		IWM_ERR(iwm, "Scanning being aborted\n");
		return -EAGAIN;
	}

	set_bit(IWM_STATUS_SCANNING, &iwm->status);

	ret = iwm_scan_ssids(iwm, request->ssids, request->n_ssids);
	if (ret) {
		clear_bit(IWM_STATUS_SCANNING, &iwm->status);
		return ret;
	}

	iwm->scan_request = request;
	return 0;
}

static int iwm_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	if (changed & WIPHY_PARAM_RTS_THRESHOLD &&
	    (iwm->conf.rts_threshold != wiphy->rts_threshold)) {
		int ret;

		iwm->conf.rts_threshold = wiphy->rts_threshold;

		ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
					     CFG_RTS_THRESHOLD,
					     iwm->conf.rts_threshold);
		if (ret < 0)
			return ret;
	}

	if (changed & WIPHY_PARAM_FRAG_THRESHOLD &&
	    (iwm->conf.frag_threshold != wiphy->frag_threshold)) {
		int ret;

		iwm->conf.frag_threshold = wiphy->frag_threshold;

		ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_FA_CFG_FIX,
					     CFG_FRAG_THRESHOLD,
					     iwm->conf.frag_threshold);
		if (ret < 0)
			return ret;
	}

	return 0;
}

static int iwm_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
				  struct cfg80211_ibss_params *params)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
	struct ieee80211_channel *chan = params->channel;

	if (!test_bit(IWM_STATUS_READY, &iwm->status))
		return -EIO;

	/* UMAC doesn't support creating or joining an IBSS network
	 * with specified bssid. */
	if (params->bssid)
		return -EOPNOTSUPP;

	iwm->channel = ieee80211_frequency_to_channel(chan->center_freq);
	iwm->umac_profile->ibss.band = chan->band;
	iwm->umac_profile->ibss.channel = iwm->channel;
	iwm->umac_profile->ssid.ssid_len = params->ssid_len;
	memcpy(iwm->umac_profile->ssid.ssid, params->ssid, params->ssid_len);

	return iwm_send_mlme_profile(iwm);
}

static int iwm_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	if (iwm->umac_profile_active)
		return iwm_invalidate_mlme_profile(iwm);

	return 0;
}

static int iwm_set_auth_type(struct iwm_priv *iwm,
			     enum nl80211_auth_type sme_auth_type)
{
	u8 *auth_type = &iwm->umac_profile->sec.auth_type;

	switch (sme_auth_type) {
	case NL80211_AUTHTYPE_AUTOMATIC:
	case NL80211_AUTHTYPE_OPEN_SYSTEM:
		IWM_DBG_WEXT(iwm, DBG, "OPEN auth\n");
		*auth_type = UMAC_AUTH_TYPE_OPEN;
		break;
	case NL80211_AUTHTYPE_SHARED_KEY:
		if (iwm->umac_profile->sec.flags &
		    (UMAC_SEC_FLG_WPA_ON_MSK | UMAC_SEC_FLG_RSNA_ON_MSK)) {
			IWM_DBG_WEXT(iwm, DBG, "WPA auth alg\n");
			*auth_type = UMAC_AUTH_TYPE_RSNA_PSK;
		} else {
			IWM_DBG_WEXT(iwm, DBG, "WEP shared key auth alg\n");
			*auth_type = UMAC_AUTH_TYPE_LEGACY_PSK;
		}

		break;
	default:
		IWM_ERR(iwm, "Unsupported auth alg: 0x%x\n", sme_auth_type);
		return -ENOTSUPP;
	}

	return 0;
}

static int iwm_set_wpa_version(struct iwm_priv *iwm, u32 wpa_version)
{
	IWM_DBG_WEXT(iwm, DBG, "wpa_version: %d\n", wpa_version);

	if (!wpa_version) {
		iwm->umac_profile->sec.flags = UMAC_SEC_FLG_LEGACY_PROFILE;
		return 0;
	}

	if (wpa_version & NL80211_WPA_VERSION_1)
		iwm->umac_profile->sec.flags = UMAC_SEC_FLG_WPA_ON_MSK;

	if (wpa_version & NL80211_WPA_VERSION_2)
		iwm->umac_profile->sec.flags = UMAC_SEC_FLG_RSNA_ON_MSK;

	return 0;
}

static int iwm_set_cipher(struct iwm_priv *iwm, u32 cipher, bool ucast)
{
	u8 *profile_cipher = ucast ? &iwm->umac_profile->sec.ucast_cipher :
		&iwm->umac_profile->sec.mcast_cipher;

	if (!cipher) {
		*profile_cipher = UMAC_CIPHER_TYPE_NONE;
		return 0;
	}

	IWM_DBG_WEXT(iwm, DBG, "%ccast cipher is 0x%x\n", ucast ? 'u' : 'm',
		     cipher);

	switch (cipher) {
	case IW_AUTH_CIPHER_NONE:
		*profile_cipher = UMAC_CIPHER_TYPE_NONE;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
		*profile_cipher = UMAC_CIPHER_TYPE_WEP_40;
		break;
	case WLAN_CIPHER_SUITE_WEP104:
		*profile_cipher = UMAC_CIPHER_TYPE_WEP_104;
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		*profile_cipher = UMAC_CIPHER_TYPE_TKIP;
		break;
	case WLAN_CIPHER_SUITE_CCMP:
		*profile_cipher = UMAC_CIPHER_TYPE_CCMP;
		break;
	default:
		IWM_ERR(iwm, "Unsupported cipher: 0x%x\n", cipher);
		return -ENOTSUPP;
	}

	return 0;
}

static int iwm_set_key_mgt(struct iwm_priv *iwm, u32 key_mgt)
{
	u8 *auth_type = &iwm->umac_profile->sec.auth_type;

	IWM_DBG_WEXT(iwm, DBG, "key_mgt: 0x%x\n", key_mgt);

	if (key_mgt == WLAN_AKM_SUITE_8021X)
		*auth_type = UMAC_AUTH_TYPE_8021X;
	else if (key_mgt == WLAN_AKM_SUITE_PSK) {
		if (iwm->umac_profile->sec.flags &
		    (UMAC_SEC_FLG_WPA_ON_MSK | UMAC_SEC_FLG_RSNA_ON_MSK))
			*auth_type = UMAC_AUTH_TYPE_RSNA_PSK;
		else
			*auth_type = UMAC_AUTH_TYPE_LEGACY_PSK;
	} else {
		IWM_ERR(iwm, "Invalid key mgt: 0x%x\n", key_mgt);
		return -EINVAL;
	}

	return 0;
}


static int iwm_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
				 struct cfg80211_connect_params *sme)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
	struct ieee80211_channel *chan = sme->channel;
	struct key_params key_param;
	int ret;

	if (!test_bit(IWM_STATUS_READY, &iwm->status))
		return -EIO;

	if (!sme->ssid)
		return -EINVAL;

	if (iwm->umac_profile_active) {
		ret = iwm_invalidate_mlme_profile(iwm);
		if (ret) {
			IWM_ERR(iwm, "Couldn't invalidate profile\n");
			return ret;
		}
	}

	if (chan)
		iwm->channel =
			ieee80211_frequency_to_channel(chan->center_freq);

	iwm->umac_profile->ssid.ssid_len = sme->ssid_len;
	memcpy(iwm->umac_profile->ssid.ssid, sme->ssid, sme->ssid_len);

	if (sme->bssid) {
		IWM_DBG_WEXT(iwm, DBG, "BSSID: %pM\n", sme->bssid);
		memcpy(&iwm->umac_profile->bssid[0], sme->bssid, ETH_ALEN);
		iwm->umac_profile->bss_num = 1;
	} else {
		memset(&iwm->umac_profile->bssid[0], 0, ETH_ALEN);
		iwm->umac_profile->bss_num = 0;
	}

	ret = iwm_set_wpa_version(iwm, sme->crypto.wpa_versions);
	if (ret < 0)
		return ret;

	ret = iwm_set_auth_type(iwm, sme->auth_type);
	if (ret < 0)
		return ret;

	if (sme->crypto.n_ciphers_pairwise) {
		ret = iwm_set_cipher(iwm, sme->crypto.ciphers_pairwise[0],
				     true);
		if (ret < 0)
			return ret;
	}

	ret = iwm_set_cipher(iwm, sme->crypto.cipher_group, false);
	if (ret < 0)
		return ret;

	if (sme->crypto.n_akm_suites) {
		ret = iwm_set_key_mgt(iwm, sme->crypto.akm_suites[0]);
		if (ret < 0)
			return ret;
	}

	/*
	 * We save the WEP key in case we want to do shared authentication.
	 * We have to do it so because UMAC will assert whenever it gets a
	 * key before a profile.
	 */
	if (sme->key) {
		key_param.key = kmemdup(sme->key, sme->key_len, GFP_KERNEL);
		if (key_param.key == NULL)
			return -ENOMEM;
		key_param.key_len = sme->key_len;
		key_param.seq_len = 0;
		key_param.cipher = sme->crypto.ciphers_pairwise[0];

		ret = iwm_key_init(&iwm->keys[sme->key_idx], sme->key_idx,
				   NULL, &key_param);
		kfree(key_param.key);
		if (ret < 0) {
			IWM_ERR(iwm, "Invalid key_params\n");
			return ret;
		}

		iwm->default_key = sme->key_idx;
	}

	/* WPA and open AUTH type from wpa_s means WPS (a.k.a. WSC) */
	if ((iwm->umac_profile->sec.flags &
	     (UMAC_SEC_FLG_WPA_ON_MSK | UMAC_SEC_FLG_RSNA_ON_MSK)) &&
	    iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN) {
			iwm->umac_profile->sec.flags = UMAC_SEC_FLG_WSC_ON_MSK;
	}

	ret = iwm_send_mlme_profile(iwm);

	if (iwm->umac_profile->sec.auth_type != UMAC_AUTH_TYPE_LEGACY_PSK ||
	    sme->key == NULL)
		return ret;

	/*
	 * We want to do shared auth.
	 * We need to actually set the key we previously cached,
	 * and then tell the UMAC it's the default one.
	 * That will trigger the auth+assoc UMAC machinery, and again,
	 * this must be done after setting the profile.
	 */
	ret = iwm_set_key(iwm, 0, &iwm->keys[sme->key_idx]);
	if (ret < 0)
		return ret;

	return iwm_set_tx_key(iwm, iwm->default_key);
}

static int iwm_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
				   u16 reason_code)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	IWM_DBG_WEXT(iwm, DBG, "Active: %d\n", iwm->umac_profile_active);

	if (iwm->umac_profile_active)
		iwm_invalidate_mlme_profile(iwm);

	return 0;
}

static int iwm_cfg80211_set_txpower(struct wiphy *wiphy,
				    enum tx_power_setting type, int dbm)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
	int ret;

	switch (type) {
	case TX_POWER_AUTOMATIC:
		return 0;
	case TX_POWER_FIXED:
		if (!test_bit(IWM_STATUS_READY, &iwm->status))
			return 0;

		ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
					      CFG_TX_PWR_LIMIT_USR, dbm * 2);
		if (ret < 0)
			return ret;

		return iwm_tx_power_trigger(iwm);
	default:
		IWM_ERR(iwm, "Unsupported power type: %d\n", type);
		return -EOPNOTSUPP;
	}

	return 0;
}

static int iwm_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	*dbm = iwm->txpower >> 1;

	return 0;
}

static int iwm_cfg80211_set_power_mgmt(struct wiphy *wiphy,
				       struct net_device *dev,
				       bool enabled, int timeout)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
	u32 power_index;

	if (enabled)
		power_index = IWM_POWER_INDEX_DEFAULT;
	else
		power_index = IWM_POWER_INDEX_MIN;

	if (power_index == iwm->conf.power_index)
		return 0;

	iwm->conf.power_index = power_index;

	return iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
				       CFG_POWER_INDEX, iwm->conf.power_index);
}

int iwm_cfg80211_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
			   struct cfg80211_pmksa *pmksa)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	return iwm_send_pmkid_update(iwm, pmksa, IWM_CMD_PMKID_ADD);
}

int iwm_cfg80211_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
			   struct cfg80211_pmksa *pmksa)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);

	return iwm_send_pmkid_update(iwm, pmksa, IWM_CMD_PMKID_DEL);
}

int iwm_cfg80211_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
{
	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
	struct cfg80211_pmksa pmksa;

	memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));

	return iwm_send_pmkid_update(iwm, &pmksa, IWM_CMD_PMKID_FLUSH);
}


static struct cfg80211_ops iwm_cfg80211_ops = {
	.change_virtual_intf = iwm_cfg80211_change_iface,
	.add_key = iwm_cfg80211_add_key,
	.get_key = iwm_cfg80211_get_key,
	.del_key = iwm_cfg80211_del_key,
	.set_default_key = iwm_cfg80211_set_default_key,
	.get_station = iwm_cfg80211_get_station,
	.scan = iwm_cfg80211_scan,
	.set_wiphy_params = iwm_cfg80211_set_wiphy_params,
	.connect = iwm_cfg80211_connect,
	.disconnect = iwm_cfg80211_disconnect,
	.join_ibss = iwm_cfg80211_join_ibss,
	.leave_ibss = iwm_cfg80211_leave_ibss,
	.set_tx_power = iwm_cfg80211_set_txpower,
	.get_tx_power = iwm_cfg80211_get_txpower,
	.set_power_mgmt = iwm_cfg80211_set_power_mgmt,
	.set_pmksa = iwm_cfg80211_set_pmksa,
	.del_pmksa = iwm_cfg80211_del_pmksa,
	.flush_pmksa = iwm_cfg80211_flush_pmksa,
};

static const u32 cipher_suites[] = {
	WLAN_CIPHER_SUITE_WEP40,
	WLAN_CIPHER_SUITE_WEP104,
	WLAN_CIPHER_SUITE_TKIP,
	WLAN_CIPHER_SUITE_CCMP,
};

struct wireless_dev *iwm_wdev_alloc(int sizeof_bus, struct device *dev)
{
	int ret = 0;
	struct wireless_dev *wdev;

	/*
	 * We're trying to have the following memory
	 * layout:
	 *
	 * +-------------------------+
	 * | struct wiphy	     |
	 * +-------------------------+
	 * | struct iwm_priv         |
	 * +-------------------------+
	 * | bus private data        |
	 * | (e.g. iwm_priv_sdio)    |
	 * +-------------------------+
	 *
	 */

	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
	if (!wdev) {
		dev_err(dev, "Couldn't allocate wireless device\n");
		return ERR_PTR(-ENOMEM);
	}

	wdev->wiphy = wiphy_new(&iwm_cfg80211_ops,
				sizeof(struct iwm_priv) + sizeof_bus);
	if (!wdev->wiphy) {
		dev_err(dev, "Couldn't allocate wiphy device\n");
		ret = -ENOMEM;
		goto out_err_new;
	}

	set_wiphy_dev(wdev->wiphy, dev);
	wdev->wiphy->max_scan_ssids = UMAC_WIFI_IF_PROBE_OPTION_MAX;
	wdev->wiphy->max_num_pmkids = UMAC_MAX_NUM_PMKIDS;
	wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
				       BIT(NL80211_IFTYPE_ADHOC);
	wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &iwm_band_2ghz;
	wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &iwm_band_5ghz;
	wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;

	wdev->wiphy->cipher_suites = cipher_suites;
	wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

	ret = wiphy_register(wdev->wiphy);
	if (ret < 0) {
		dev_err(dev, "Couldn't register wiphy device\n");
		goto out_err_register;
	}

	return wdev;

 out_err_register:
	wiphy_free(wdev->wiphy);

 out_err_new:
	kfree(wdev);

	return ERR_PTR(ret);
}

void iwm_wdev_free(struct iwm_priv *iwm)
{
	struct wireless_dev *wdev = iwm_to_wdev(iwm);

	if (!wdev)
		return;

	wiphy_unregister(wdev->wiphy);
	wiphy_free(wdev->wiphy);
	kfree(wdev);
}