cfg80211.c 170 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* Toplevel file. Relies on dhd_linux.c to send commands to the dongle. */

#include <linux/kernel.h>
#include <linux/etherdevice.h>
21
#include <linux/module.h>
22
#include <linux/vmalloc.h>
23
#include <net/cfg80211.h>
24
#include <net/netlink.h>
25
26
27
28

#include <brcmu_utils.h>
#include <defs.h>
#include <brcmu_wifi.h>
29
#include "core.h"
30
#include "debug.h"
31
#include "tracepoint.h"
32
#include "fwil_types.h"
33
#include "p2p.h"
34
#include "btcoex.h"
35
#include "cfg80211.h"
36
#include "feature.h"
37
#include "fwil.h"
38
#include "proto.h"
39
#include "vendor.h"
40
#include "bus.h"
41
#include "common.h"
42

43
44
45
46
47
48
49
50
51
52
53
54
#define BRCMF_SCAN_IE_LEN_MAX		2048
#define BRCMF_PNO_VERSION		2
#define BRCMF_PNO_TIME			30
#define BRCMF_PNO_REPEAT		4
#define BRCMF_PNO_FREQ_EXPO_MAX		3
#define BRCMF_PNO_MAX_PFN_COUNT		16
#define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT	6
#define BRCMF_PNO_HIDDEN_BIT		2
#define BRCMF_PNO_WPA_AUTH_ANY		0xFFFFFFFF
#define BRCMF_PNO_SCAN_COMPLETE		1
#define BRCMF_PNO_SCAN_INCOMPLETE	0

Hante Meuleman's avatar
Hante Meuleman committed
55
56
57
58
#define WPA_OUI				"\x00\x50\xF2"	/* WPA OUI */
#define WPA_OUI_TYPE			1
#define RSN_OUI				"\x00\x0F\xAC"	/* RSN OUI */
#define	WME_OUI_TYPE			2
59
#define WPS_OUI_TYPE			4
Hante Meuleman's avatar
Hante Meuleman committed
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

#define VS_IE_FIXED_HDR_LEN		6
#define WPA_IE_VERSION_LEN		2
#define WPA_IE_MIN_OUI_LEN		4
#define WPA_IE_SUITE_COUNT_LEN		2

#define WPA_CIPHER_NONE			0	/* None */
#define WPA_CIPHER_WEP_40		1	/* WEP (40-bit) */
#define WPA_CIPHER_TKIP			2	/* TKIP: default for WPA */
#define WPA_CIPHER_AES_CCM		4	/* AES (CCM) */
#define WPA_CIPHER_WEP_104		5	/* WEP (104-bit) */

#define RSN_AKM_NONE			0	/* None (IBSS) */
#define RSN_AKM_UNSPECIFIED		1	/* Over 802.1x */
#define RSN_AKM_PSK			2	/* Pre-shared Key */
#define RSN_CAP_LEN			2	/* Length of RSN capabilities */
#define RSN_CAP_PTK_REPLAY_CNTR_MASK	0x000C

#define VNDR_IE_CMD_LEN			4	/* length of the set command
						 * string :"add", "del" (+ NUL)
						 */
#define VNDR_IE_COUNT_OFFSET		4
#define VNDR_IE_PKTFLAG_OFFSET		8
#define VNDR_IE_VSIE_OFFSET		12
#define VNDR_IE_HDR_SIZE		12
85
#define VNDR_IE_PARSE_LIMIT		5
Hante Meuleman's avatar
Hante Meuleman committed
86
87
88

#define	DOT11_MGMT_HDR_LEN		24	/* d11 management header len */
#define	DOT11_BCN_PRB_FIXED_LEN		12	/* beacon/probe fixed length */
89

90
91
92
93
#define BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS	320
#define BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS	400
#define BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS	20

94
95
96
#define BRCMF_ASSOC_PARAMS_FIXED_SIZE \
	(sizeof(struct brcmf_assoc_params_le) - sizeof(u16))

97
static bool check_vif_up(struct brcmf_cfg80211_vif *vif)
98
{
99
	if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state)) {
100
101
		brcmf_dbg(INFO, "device is not ready : status (%lu)\n",
			  vif->sme_state);
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
		return false;
	}
	return true;
}

#define RATE_TO_BASE100KBPS(rate)   (((rate) * 10) / 2)
#define RATETAB_ENT(_rateid, _flags) \
	{                                                               \
		.bitrate        = RATE_TO_BASE100KBPS(_rateid),     \
		.hw_value       = (_rateid),                            \
		.flags          = (_flags),                             \
	}

static struct ieee80211_rate __wl_rates[] = {
	RATETAB_ENT(BRCM_RATE_1M, 0),
	RATETAB_ENT(BRCM_RATE_2M, IEEE80211_RATE_SHORT_PREAMBLE),
	RATETAB_ENT(BRCM_RATE_5M5, IEEE80211_RATE_SHORT_PREAMBLE),
	RATETAB_ENT(BRCM_RATE_11M, IEEE80211_RATE_SHORT_PREAMBLE),
	RATETAB_ENT(BRCM_RATE_6M, 0),
	RATETAB_ENT(BRCM_RATE_9M, 0),
	RATETAB_ENT(BRCM_RATE_12M, 0),
	RATETAB_ENT(BRCM_RATE_18M, 0),
	RATETAB_ENT(BRCM_RATE_24M, 0),
	RATETAB_ENT(BRCM_RATE_36M, 0),
	RATETAB_ENT(BRCM_RATE_48M, 0),
	RATETAB_ENT(BRCM_RATE_54M, 0),
};

#define wl_g_rates		(__wl_rates + 0)
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
#define wl_g_rates_size		ARRAY_SIZE(__wl_rates)
#define wl_a_rates		(__wl_rates + 4)
#define wl_a_rates_size		(wl_g_rates_size - 4)

#define CHAN2G(_channel, _freq) {				\
	.band			= IEEE80211_BAND_2GHZ,		\
	.center_freq		= (_freq),			\
	.hw_value		= (_channel),			\
	.flags			= IEEE80211_CHAN_DISABLED,	\
	.max_antenna_gain	= 0,				\
	.max_power		= 30,				\
}

#define CHAN5G(_channel) {					\
	.band			= IEEE80211_BAND_5GHZ,		\
	.center_freq		= 5000 + (5 * (_channel)),	\
	.hw_value		= (_channel),			\
	.flags			= IEEE80211_CHAN_DISABLED,	\
	.max_antenna_gain	= 0,				\
	.max_power		= 30,				\
}

static struct ieee80211_channel __wl_2ghz_channels[] = {
	CHAN2G(1, 2412), CHAN2G(2, 2417), CHAN2G(3, 2422), CHAN2G(4, 2427),
	CHAN2G(5, 2432), CHAN2G(6, 2437), CHAN2G(7, 2442), CHAN2G(8, 2447),
	CHAN2G(9, 2452), CHAN2G(10, 2457), CHAN2G(11, 2462), CHAN2G(12, 2467),
	CHAN2G(13, 2472), CHAN2G(14, 2484)
};

static struct ieee80211_channel __wl_5ghz_channels[] = {
	CHAN5G(34), CHAN5G(36), CHAN5G(38), CHAN5G(40), CHAN5G(42),
	CHAN5G(44), CHAN5G(46), CHAN5G(48), CHAN5G(52), CHAN5G(56),
	CHAN5G(60), CHAN5G(64), CHAN5G(100), CHAN5G(104), CHAN5G(108),
	CHAN5G(112), CHAN5G(116), CHAN5G(120), CHAN5G(124), CHAN5G(128),
	CHAN5G(132), CHAN5G(136), CHAN5G(140), CHAN5G(144), CHAN5G(149),
	CHAN5G(153), CHAN5G(157), CHAN5G(161), CHAN5G(165)
};
168

169
/* Band templates duplicated per wiphy. The channel info
170
 * above is added to the band during setup.
171
172
 */
static const struct ieee80211_supported_band __wl_band_2ghz = {
173
174
175
176
177
	.band = IEEE80211_BAND_2GHZ,
	.bitrates = wl_g_rates,
	.n_bitrates = wl_g_rates_size,
};

178
static const struct ieee80211_supported_band __wl_band_5ghz = {
179
180
181
182
183
	.band = IEEE80211_BAND_5GHZ,
	.bitrates = wl_a_rates,
	.n_bitrates = wl_a_rates_size,
};

184
185
/* This is to override regulatory domains defined in cfg80211 module (reg.c)
 * By default world regulatory domain defined in reg.c puts the flags
186
187
188
 * NL80211_RRF_NO_IR for 5GHz channels (for * 36..48 and 149..165).
 * With respect to these flags, wpa_supplicant doesn't * start p2p
 * operations on 5GHz channels. All the changes in world regulatory
189
190
191
192
193
194
195
196
197
198
199
200
201
202
 * domain are to be done here.
 */
static const struct ieee80211_regdomain brcmf_regdom = {
	.n_reg_rules = 4,
	.alpha2 =  "99",
	.reg_rules = {
		/* IEEE 802.11b/g, channels 1..11 */
		REG_RULE(2412-10, 2472+10, 40, 6, 20, 0),
		/* If any */
		/* IEEE 802.11 channel 14 - Only JP enables
		 * this and for 802.11b only
		 */
		REG_RULE(2484-10, 2484+10, 20, 6, 20, 0),
		/* IEEE 802.11a, channel 36..64 */
203
		REG_RULE(5150-10, 5350+10, 80, 6, 20, 0),
204
		/* IEEE 802.11a, channel 100..165 */
205
		REG_RULE(5470-10, 5850+10, 80, 6, 20, 0), }
206
207
208
209
210
211
212
213
214
215
};

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

Hante Meuleman's avatar
Hante Meuleman committed
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/* Vendor specific ie. id = 221, oui and type defines exact ie */
struct brcmf_vs_tlv {
	u8 id;
	u8 len;
	u8 oui[3];
	u8 oui_type;
};

struct parsed_vndr_ie_info {
	u8 *ie_ptr;
	u32 ie_len;	/* total length including id & length field */
	struct brcmf_vs_tlv vndrie;
};

struct parsed_vndr_ies {
	u32 count;
232
	struct parsed_vndr_ie_info ie_info[VNDR_IE_PARSE_LIMIT];
Hante Meuleman's avatar
Hante Meuleman committed
233
234
};

235
236
237
238
static int brcmf_roamoff;
module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
MODULE_PARM_DESC(roamoff, "do not use internal roaming engine");

239

240
241
static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
			       struct cfg80211_chan_def *ch)
242
243
244
245
246
247
248
249
250
251
{
	struct brcmu_chan ch_inf;
	s32 primary_offset;

	brcmf_dbg(TRACE, "chandef: control %d center %d width %d\n",
		  ch->chan->center_freq, ch->center_freq1, ch->width);
	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq1);
	primary_offset = ch->center_freq1 - ch->chan->center_freq;
	switch (ch->width) {
	case NL80211_CHAN_WIDTH_20:
252
	case NL80211_CHAN_WIDTH_20_NOHT:
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
		ch_inf.bw = BRCMU_CHAN_BW_20;
		WARN_ON(primary_offset != 0);
		break;
	case NL80211_CHAN_WIDTH_40:
		ch_inf.bw = BRCMU_CHAN_BW_40;
		if (primary_offset < 0)
			ch_inf.sb = BRCMU_CHAN_SB_U;
		else
			ch_inf.sb = BRCMU_CHAN_SB_L;
		break;
	case NL80211_CHAN_WIDTH_80:
		ch_inf.bw = BRCMU_CHAN_BW_80;
		if (primary_offset < 0) {
			if (primary_offset < -CH_10MHZ_APART)
				ch_inf.sb = BRCMU_CHAN_SB_UU;
			else
				ch_inf.sb = BRCMU_CHAN_SB_UL;
		} else {
			if (primary_offset > CH_10MHZ_APART)
				ch_inf.sb = BRCMU_CHAN_SB_LL;
			else
				ch_inf.sb = BRCMU_CHAN_SB_LU;
		}
		break;
277
278
279
280
	case NL80211_CHAN_WIDTH_80P80:
	case NL80211_CHAN_WIDTH_160:
	case NL80211_CHAN_WIDTH_5:
	case NL80211_CHAN_WIDTH_10:
281
282
283
284
285
286
287
288
289
290
	default:
		WARN_ON_ONCE(1);
	}
	switch (ch->chan->band) {
	case IEEE80211_BAND_2GHZ:
		ch_inf.band = BRCMU_CHAN_BAND_2G;
		break;
	case IEEE80211_BAND_5GHZ:
		ch_inf.band = BRCMU_CHAN_BAND_5G;
		break;
291
	case IEEE80211_BAND_60GHZ:
292
293
294
295
296
297
298
299
	default:
		WARN_ON_ONCE(1);
	}
	d11inf->encchspec(&ch_inf);

	return ch_inf.chspec;
}

Franky Lin's avatar
Franky Lin committed
300
301
u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
			struct ieee80211_channel *ch)
302
{
Franky Lin's avatar
Franky Lin committed
303
	struct brcmu_chan ch_inf;
304

Franky Lin's avatar
Franky Lin committed
305
306
307
	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq);
	ch_inf.bw = BRCMU_CHAN_BW_20;
	d11inf->encchspec(&ch_inf);
308

Franky Lin's avatar
Franky Lin committed
309
	return ch_inf.chspec;
310
311
}

312
313
314
315
/* Traverse a string of 1-byte tag/1-byte length/variable-length value
 * triples, returning a pointer to the substring whose first element
 * matches tag
 */
316
317
const struct brcmf_tlv *
brcmf_parse_tlvs(const void *buf, int buflen, uint key)
318
{
319
320
	const struct brcmf_tlv *elt = buf;
	int totlen = buflen;
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340

	/* find tagged parameter */
	while (totlen >= TLV_HDR_LEN) {
		int len = elt->len;

		/* validate remaining totlen */
		if ((elt->id == key) && (totlen >= (len + TLV_HDR_LEN)))
			return elt;

		elt = (struct brcmf_tlv *)((u8 *)elt + (len + TLV_HDR_LEN));
		totlen -= (len + TLV_HDR_LEN);
	}

	return NULL;
}

/* Is any of the tlvs the expected entry? If
 * not update the tlvs buffer pointer/length.
 */
static bool
341
342
brcmf_tlv_has_ie(const u8 *ie, const u8 **tlvs, u32 *tlvs_len,
		 const u8 *oui, u32 oui_len, u8 type)
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
{
	/* If the contents match the OUI and the type */
	if (ie[TLV_LEN_OFF] >= oui_len + 1 &&
	    !memcmp(&ie[TLV_BODY_OFF], oui, oui_len) &&
	    type == ie[TLV_BODY_OFF + oui_len]) {
		return true;
	}

	if (tlvs == NULL)
		return false;
	/* point to the next ie */
	ie += ie[TLV_LEN_OFF] + TLV_HDR_LEN;
	/* calculate the length of the rest of the buffer */
	*tlvs_len -= (int)(ie - *tlvs);
	/* update the pointer to the start of the buffer */
	*tlvs = ie;

	return false;
}

static struct brcmf_vs_tlv *
364
brcmf_find_wpaie(const u8 *parse, u32 len)
365
{
366
	const struct brcmf_tlv *ie;
367
368

	while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) {
369
		if (brcmf_tlv_has_ie((const u8 *)ie, &parse, &len,
370
371
372
373
374
375
376
				     WPA_OUI, TLV_OUI_LEN, WPA_OUI_TYPE))
			return (struct brcmf_vs_tlv *)ie;
	}
	return NULL;
}

static struct brcmf_vs_tlv *
377
brcmf_find_wpsie(const u8 *parse, u32 len)
378
{
379
	const struct brcmf_tlv *ie;
380
381
382
383
384
385
386
387
388

	while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) {
		if (brcmf_tlv_has_ie((u8 *)ie, &parse, &len,
				     WPA_OUI, TLV_OUI_LEN, WPS_OUI_TYPE))
			return (struct brcmf_vs_tlv *)ie;
	}
	return NULL;
}

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
static int brcmf_vif_change_validate(struct brcmf_cfg80211_info *cfg,
				     struct brcmf_cfg80211_vif *vif,
				     enum nl80211_iftype new_type)
{
	int iftype_num[NUM_NL80211_IFTYPES];
	struct brcmf_cfg80211_vif *pos;

	memset(&iftype_num[0], 0, sizeof(iftype_num));
	list_for_each_entry(pos, &cfg->vif_list, list)
		if (pos == vif)
			iftype_num[new_type]++;
		else
			iftype_num[pos->wdev.iftype]++;

	return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
}

static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,
				  enum nl80211_iftype new_type)
{
	int iftype_num[NUM_NL80211_IFTYPES];
	struct brcmf_cfg80211_vif *pos;

	memset(&iftype_num[0], 0, sizeof(iftype_num));
	list_for_each_entry(pos, &cfg->vif_list, list)
		iftype_num[pos->wdev.iftype]++;

	iftype_num[new_type]++;
	return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
}
419

420
421
422
423
424
425
426
427
428
429
430
431
432
433
static void convert_key_from_CPU(struct brcmf_wsec_key *key,
				 struct brcmf_wsec_key_le *key_le)
{
	key_le->index = cpu_to_le32(key->index);
	key_le->len = cpu_to_le32(key->len);
	key_le->algo = cpu_to_le32(key->algo);
	key_le->flags = cpu_to_le32(key->flags);
	key_le->rxiv.hi = cpu_to_le32(key->rxiv.hi);
	key_le->rxiv.lo = cpu_to_le16(key->rxiv.lo);
	key_le->iv_initialized = cpu_to_le32(key->iv_initialized);
	memcpy(key_le->data, key->data, sizeof(key->data));
	memcpy(key_le->ea, key->ea, sizeof(key->ea));
}

434
static int
435
send_key_to_dongle(struct brcmf_if *ifp, struct brcmf_wsec_key *key)
436
437
438
439
440
{
	int err;
	struct brcmf_wsec_key_le key_le;

	convert_key_from_CPU(key, &key_le);
441

442
	brcmf_netdev_wait_pend8021x(ifp);
443

444
	err = brcmf_fil_bsscfg_data_set(ifp, "wsec_key", &key_le,
445
					sizeof(key_le));
446

447
	if (err)
448
		brcmf_err("wsec_key error (%d)\n", err);
449
450
451
	return err;
}

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
static s32
brcmf_configure_arp_offload(struct brcmf_if *ifp, bool enable)
{
	s32 err;
	u32 mode;

	if (enable)
		mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
	else
		mode = 0;

	/* Try to set and enable ARP offload feature, this may fail, then it  */
	/* is simply not supported and err 0 will be returned                 */
	err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
	if (err) {
		brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
			  mode, err);
		err = 0;
	} else {
		err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
		if (err) {
			brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
				  enable, err);
			err = 0;
		} else
			brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
				  enable, mode);
	}

	return err;
}

484
485
486
static void
brcmf_cfg80211_update_proto_addr_mode(struct wireless_dev *wdev)
{
487
488
489
490
491
	struct brcmf_cfg80211_vif *vif;
	struct brcmf_if *ifp;

	vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
	ifp = vif->ifp;
492
493
494
495
496
497
498
499
500
501
502

	if ((wdev->iftype == NL80211_IFTYPE_ADHOC) ||
	    (wdev->iftype == NL80211_IFTYPE_AP) ||
	    (wdev->iftype == NL80211_IFTYPE_P2P_GO))
		brcmf_proto_configure_addr_mode(ifp->drvr, ifp->ifidx,
						ADDR_DIRECT);
	else
		brcmf_proto_configure_addr_mode(ifp->drvr, ifp->ifidx,
						ADDR_INDIRECT);
}

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
static int brcmf_cfg80211_request_ap_if(struct brcmf_if *ifp)
{
	struct brcmf_mbss_ssid_le mbss_ssid_le;
	int bsscfgidx;
	int err;

	memset(&mbss_ssid_le, 0, sizeof(mbss_ssid_le));
	bsscfgidx = brcmf_get_next_free_bsscfgidx(ifp->drvr);
	if (bsscfgidx < 0)
		return bsscfgidx;

	mbss_ssid_le.bsscfgidx = cpu_to_le32(bsscfgidx);
	mbss_ssid_le.SSID_len = cpu_to_le32(5);
	sprintf(mbss_ssid_le.SSID, "ssid%d" , bsscfgidx);

	err = brcmf_fil_bsscfg_data_set(ifp, "bsscfg:ssid", &mbss_ssid_le,
					sizeof(mbss_ssid_le));
	if (err < 0)
		brcmf_err("setting ssid failed %d\n", err);

	return err;
}

/**
 * brcmf_ap_add_vif() - create a new AP virtual interface for multiple BSS
 *
 * @wiphy: wiphy device of new interface.
 * @name: name of the new interface.
 * @flags: not used.
 * @params: contains mac address for AP device.
 */
static
struct wireless_dev *brcmf_ap_add_vif(struct wiphy *wiphy, const char *name,
				      u32 *flags, struct vif_params *params)
{
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
	struct brcmf_cfg80211_vif *vif;
	int err;

	if (brcmf_cfg80211_vif_event_armed(cfg))
		return ERR_PTR(-EBUSY);

	brcmf_dbg(INFO, "Adding vif \"%s\"\n", name);

	vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_AP, false);
	if (IS_ERR(vif))
		return (struct wireless_dev *)vif;

	brcmf_cfg80211_arm_vif_event(cfg, vif);

	err = brcmf_cfg80211_request_ap_if(ifp);
	if (err) {
		brcmf_cfg80211_arm_vif_event(cfg, NULL);
		goto fail;
	}

	/* wait for firmware event */
	err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_ADD,
						    msecs_to_jiffies(1500));
	brcmf_cfg80211_arm_vif_event(cfg, NULL);
	if (!err) {
		brcmf_err("timeout occurred\n");
		err = -EIO;
		goto fail;
	}

	/* interface created in firmware */
	ifp = vif->ifp;
	if (!ifp) {
		brcmf_err("no if pointer provided\n");
		err = -ENOENT;
		goto fail;
	}

	strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
	err = brcmf_net_attach(ifp, true);
	if (err) {
		brcmf_err("Registering netdevice failed\n");
		goto fail;
	}

	return &ifp->vif->wdev;

fail:
	brcmf_free_vif(vif);
	return ERR_PTR(err);
}

592
593
594
595
596
597
598
599
600
601
602
603
604
static bool brcmf_is_apmode(struct brcmf_cfg80211_vif *vif)
{
	enum nl80211_iftype iftype;

	iftype = vif->wdev.iftype;
	return iftype == NL80211_IFTYPE_AP || iftype == NL80211_IFTYPE_P2P_GO;
}

static bool brcmf_is_ibssmode(struct brcmf_cfg80211_vif *vif)
{
	return vif->wdev.iftype == NL80211_IFTYPE_ADHOC;
}

605
606
static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
						     const char *name,
607
						     unsigned char name_assign_type,
608
609
610
611
						     enum nl80211_iftype type,
						     u32 *flags,
						     struct vif_params *params)
{
612
	struct wireless_dev *wdev;
613
	int err;
614

615
	brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
616
617
618
619
620
	err = brcmf_vif_add_validate(wiphy_to_cfg(wiphy), type);
	if (err) {
		brcmf_err("iface validation failed: err=%d\n", err);
		return ERR_PTR(err);
	}
621
622
623
624
625
626
627
628
	switch (type) {
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_MESH_POINT:
		return ERR_PTR(-EOPNOTSUPP);
629
630
631
632
633
	case NL80211_IFTYPE_AP:
		wdev = brcmf_ap_add_vif(wiphy, name, flags, params);
		if (!IS_ERR(wdev))
			brcmf_cfg80211_update_proto_addr_mode(wdev);
		return wdev;
634
635
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
636
	case NL80211_IFTYPE_P2P_DEVICE:
637
		wdev = brcmf_p2p_add_vif(wiphy, name, name_assign_type, type, flags, params);
638
639
640
		if (!IS_ERR(wdev))
			brcmf_cfg80211_update_proto_addr_mode(wdev);
		return wdev;
641
642
643
644
645
646
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return ERR_PTR(-EINVAL);
	}
}

647
648
static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
{
649
	if (brcmf_feat_is_quirk_enabled(ifp, BRCMF_FEAT_QUIRK_NEED_MPC))
650
651
652
		brcmf_set_mpc(ifp, mpc);
}

653
void brcmf_set_mpc(struct brcmf_if *ifp, int mpc)
654
655
656
657
658
659
660
661
662
663
664
665
666
{
	s32 err = 0;

	if (check_vif_up(ifp->vif)) {
		err = brcmf_fil_iovar_int_set(ifp, "mpc", mpc);
		if (err) {
			brcmf_err("fail to set mpc\n");
			return;
		}
		brcmf_dbg(INFO, "MPC : %d\n", mpc);
	}
}

667
668
669
s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
				struct brcmf_if *ifp, bool aborted,
				bool fw_abort)
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
{
	struct brcmf_scan_params_le params_le;
	struct cfg80211_scan_request *scan_request;
	s32 err = 0;

	brcmf_dbg(SCAN, "Enter\n");

	/* clear scan request, because the FW abort can cause a second call */
	/* to this functon and might cause a double cfg80211_scan_done      */
	scan_request = cfg->scan_request;
	cfg->scan_request = NULL;

	if (timer_pending(&cfg->escan_timeout))
		del_timer_sync(&cfg->escan_timeout);

	if (fw_abort) {
		/* Do a scan abort to stop the driver's scan engine */
		brcmf_dbg(SCAN, "ABORT scan in firmware\n");
		memset(&params_le, 0, sizeof(params_le));
689
		eth_broadcast_addr(params_le.bssid);
690
691
692
693
694
695
696
697
698
699
		params_le.bss_type = DOT11_BSSTYPE_ANY;
		params_le.scan_type = 0;
		params_le.channel_num = cpu_to_le32(1);
		params_le.nprobes = cpu_to_le32(1);
		params_le.active_time = cpu_to_le32(-1);
		params_le.passive_time = cpu_to_le32(-1);
		params_le.home_time = cpu_to_le32(-1);
		/* Scan is aborted by setting channel_list[0] to -1 */
		params_le.channel_list[0] = cpu_to_le16(-1);
		/* E-Scan (or anyother type) can be aborted by SCAN */
700
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
701
702
703
704
					     &params_le, sizeof(params_le));
		if (err)
			brcmf_err("Scan abort  failed\n");
	}
705

706
	brcmf_scan_config_mpc(ifp, 1);
707

708
709
710
711
712
713
714
715
716
717
718
719
720
721
	/*
	 * e-scan can be initiated by scheduled scan
	 * which takes precedence.
	 */
	if (cfg->sched_escan) {
		brcmf_dbg(SCAN, "scheduled scan completed\n");
		cfg->sched_escan = false;
		if (!aborted)
			cfg80211_sched_scan_results(cfg_to_wiphy(cfg));
	} else if (scan_request) {
		brcmf_dbg(SCAN, "ESCAN Completed scan: %s\n",
			  aborted ? "Aborted" : "Done");
		cfg80211_scan_done(scan_request, aborted);
	}
722
723
	if (!test_and_clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
		brcmf_dbg(SCAN, "Scan complete, probably P2P scan\n");
724
725
726
727

	return err;
}

728
729
730
static
int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
731
732
733
734
735
736
737
738
739
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
	struct net_device *ndev = wdev->netdev;

	/* vif event pending in firmware */
	if (brcmf_cfg80211_vif_event_armed(cfg))
		return -EBUSY;

	if (ndev) {
		if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status) &&
740
741
742
		    cfg->escan_info.ifp == netdev_priv(ndev))
			brcmf_notify_escan_complete(cfg, netdev_priv(ndev),
						    true, true);
743
744
745
746

		brcmf_fil_iovar_int_set(netdev_priv(ndev), "mpc", 1);
	}

747
748
749
750
751
752
753
754
755
756
757
	switch (wdev->iftype) {
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_MESH_POINT:
		return -EOPNOTSUPP;
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
758
	case NL80211_IFTYPE_P2P_DEVICE:
759
760
761
762
763
764
765
766
		return brcmf_p2p_del_vif(wiphy, wdev);
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return -EINVAL;
	}
	return -EOPNOTSUPP;
}

767
768
769
770
771
static s32
brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
			 enum nl80211_iftype type, u32 *flags,
			 struct vif_params *params)
{
772
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
773
	struct brcmf_if *ifp = netdev_priv(ndev);
774
	struct brcmf_cfg80211_vif *vif = ifp->vif;
775
	s32 infra = 0;
Hante Meuleman's avatar
Hante Meuleman committed
776
	s32 ap = 0;
777
778
	s32 err = 0;

779
	brcmf_dbg(TRACE, "Enter, idx=%d, type=%d\n", ifp->bssidx, type);
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

	/* WAR: There are a number of p2p interface related problems which
	 * need to be handled initially (before doing the validate).
	 * wpa_supplicant tends to do iface changes on p2p device/client/go
	 * which are not always possible/allowed. However we need to return
	 * OK otherwise the wpa_supplicant wont start. The situation differs
	 * on configuration and setup (p2pon=1 module param). The first check
	 * is to see if the request is a change to station for p2p iface.
	 */
	if ((type == NL80211_IFTYPE_STATION) &&
	    ((vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) ||
	     (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) ||
	     (vif->wdev.iftype == NL80211_IFTYPE_P2P_DEVICE))) {
		brcmf_dbg(TRACE, "Ignoring cmd for p2p if\n");
		/* Now depending on whether module param p2pon=1 was used the
		 * response needs to be either 0 or EOPNOTSUPP. The reason is
		 * that if p2pon=1 is used, but a newer supplicant is used then
		 * we should return an error, as this combination wont work.
		 * In other situations 0 is returned and supplicant will start
		 * normally. It will give a trace in cfg80211, but it is the
		 * only way to get it working. Unfortunately this will result
		 * in situation where we wont support new supplicant in
		 * combination with module param p2pon=1, but that is the way
		 * it is. If the user tries this then unloading of driver might
		 * fail/lock.
		 */
		if (cfg->p2p.p2pdev_dynamically)
			return -EOPNOTSUPP;
		else
			return 0;
	}
811
812
813
814
815
	err = brcmf_vif_change_validate(wiphy_to_cfg(wiphy), vif, type);
	if (err) {
		brcmf_err("iface validation failed: err=%d\n", err);
		return err;
	}
816
817
818
	switch (type) {
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_WDS:
819
820
		brcmf_err("type (%d) : currently we do not support this type\n",
			  type);
821
822
823
824
825
826
827
		return -EOPNOTSUPP;
	case NL80211_IFTYPE_ADHOC:
		infra = 0;
		break;
	case NL80211_IFTYPE_STATION:
		infra = 1;
		break;
Hante Meuleman's avatar
Hante Meuleman committed
828
	case NL80211_IFTYPE_AP:
829
	case NL80211_IFTYPE_P2P_GO:
Hante Meuleman's avatar
Hante Meuleman committed
830
831
		ap = 1;
		break;
832
833
834
835
836
	default:
		err = -EINVAL;
		goto done;
	}

Hante Meuleman's avatar
Hante Meuleman committed
837
	if (ap) {
838
839
840
841
842
843
844
		if (type == NL80211_IFTYPE_P2P_GO) {
			brcmf_dbg(INFO, "IF Type = P2P GO\n");
			err = brcmf_p2p_ifchange(cfg, BRCMF_FIL_P2P_IF_GO);
		}
		if (!err) {
			brcmf_dbg(INFO, "IF Type = AP\n");
		}
845
	} else {
846
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, infra);
Hante Meuleman's avatar
Hante Meuleman committed
847
		if (err) {
848
			brcmf_err("WLC_SET_INFRA error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
849
850
851
			err = -EAGAIN;
			goto done;
		}
852
		brcmf_dbg(INFO, "IF Type = %s\n", brcmf_is_ibssmode(vif) ?
853
			  "Adhoc" : "Infra");
854
	}
Hante Meuleman's avatar
Hante Meuleman committed
855
	ndev->ieee80211_ptr->iftype = type;
856

857
858
	brcmf_cfg80211_update_proto_addr_mode(&vif->wdev);

859
done:
860
	brcmf_dbg(TRACE, "Exit\n");
861
862
863
864

	return err;
}

Franky Lin's avatar
Franky Lin committed
865
866
static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
			     struct brcmf_scan_params_le *params_le,
Hante Meuleman's avatar
Hante Meuleman committed
867
868
869
870
871
872
			     struct cfg80211_scan_request *request)
{
	u32 n_ssids;
	u32 n_channels;
	s32 i;
	s32 offset;
873
	u16 chanspec;
Hante Meuleman's avatar
Hante Meuleman committed
874
	char *ptr;
875
	struct brcmf_ssid_le ssid_le;
Hante Meuleman's avatar
Hante Meuleman committed
876

877
	eth_broadcast_addr(params_le->bssid);
Hante Meuleman's avatar
Hante Meuleman committed
878
	params_le->bss_type = DOT11_BSSTYPE_ANY;
879
	params_le->scan_type = BRCMF_SCANTYPE_ACTIVE;
Hante Meuleman's avatar
Hante Meuleman committed
880
881
882
883
884
885
886
887
888
	params_le->channel_num = 0;
	params_le->nprobes = cpu_to_le32(-1);
	params_le->active_time = cpu_to_le32(-1);
	params_le->passive_time = cpu_to_le32(-1);
	params_le->home_time = cpu_to_le32(-1);
	memset(&params_le->ssid_le, 0, sizeof(params_le->ssid_le));

	n_ssids = request->n_ssids;
	n_channels = request->n_channels;
889

Hante Meuleman's avatar
Hante Meuleman committed
890
	/* Copy channel array if applicable */
891
892
	brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
		  n_channels);
Hante Meuleman's avatar
Hante Meuleman committed
893
894
	if (n_channels > 0) {
		for (i = 0; i < n_channels; i++) {
Franky Lin's avatar
Franky Lin committed
895
896
			chanspec = channel_to_chanspec(&cfg->d11inf,
						       request->channels[i]);
897
898
			brcmf_dbg(SCAN, "Chan : %d, Channel spec: %x\n",
				  request->channels[i]->hw_value, chanspec);
899
			params_le->channel_list[i] = cpu_to_le16(chanspec);
Hante Meuleman's avatar
Hante Meuleman committed
900
901
		}
	} else {
902
		brcmf_dbg(SCAN, "Scanning all channels\n");
Hante Meuleman's avatar
Hante Meuleman committed
903
904
	}
	/* Copy ssid array if applicable */
905
	brcmf_dbg(SCAN, "### List of SSIDs to scan ### %d\n", n_ssids);
Hante Meuleman's avatar
Hante Meuleman committed
906
907
908
909
910
911
	if (n_ssids > 0) {
		offset = offsetof(struct brcmf_scan_params_le, channel_list) +
				n_channels * sizeof(u16);
		offset = roundup(offset, sizeof(u32));
		ptr = (char *)params_le + offset;
		for (i = 0; i < n_ssids; i++) {
912
913
914
915
916
917
			memset(&ssid_le, 0, sizeof(ssid_le));
			ssid_le.SSID_len =
					cpu_to_le32(request->ssids[i].ssid_len);
			memcpy(ssid_le.SSID, request->ssids[i].ssid,
			       request->ssids[i].ssid_len);
			if (!ssid_le.SSID_len)
918
				brcmf_dbg(SCAN, "%d: Broadcast scan\n", i);
Hante Meuleman's avatar
Hante Meuleman committed
919
			else
920
921
				brcmf_dbg(SCAN, "%d: scan for  %s size =%d\n",
					  i, ssid_le.SSID, ssid_le.SSID_len);
922
923
			memcpy(ptr, &ssid_le, sizeof(ssid_le));
			ptr += sizeof(ssid_le);
Hante Meuleman's avatar
Hante Meuleman committed
924
925
		}
	} else {
926
927
		brcmf_dbg(SCAN, "Performing passive scan\n");
		params_le->scan_type = BRCMF_SCANTYPE_PASSIVE;
Hante Meuleman's avatar
Hante Meuleman committed
928
929
930
931
932
933
934
935
	}
	/* Adding mask to channel numbers */
	params_le->channel_num =
		cpu_to_le32((n_ssids << BRCMF_SCAN_PARAMS_NSSID_SHIFT) |
			(n_channels & BRCMF_SCAN_PARAMS_COUNT_MASK));
}

static s32
936
brcmf_run_escan(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp,
Hante Meuleman's avatar
Hante Meuleman committed
937
938
939
940
941
942
943
		struct cfg80211_scan_request *request, u16 action)
{
	s32 params_size = BRCMF_SCAN_PARAMS_FIXED_SIZE +
			  offsetof(struct brcmf_escan_params_le, params_le);
	struct brcmf_escan_params_le *params;
	s32 err = 0;

944
	brcmf_dbg(SCAN, "E-SCAN START\n");
Hante Meuleman's avatar
Hante Meuleman committed
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959

	if (request != NULL) {
		/* Allocate space for populating ssids in struct */
		params_size += sizeof(u32) * ((request->n_channels + 1) / 2);

		/* Allocate space for populating ssids in struct */
		params_size += sizeof(struct brcmf_ssid) * request->n_ssids;
	}

	params = kzalloc(params_size, GFP_KERNEL);
	if (!params) {
		err = -ENOMEM;
		goto exit;
	}
	BUG_ON(params_size + sizeof("escan") >= BRCMF_DCMD_MEDLEN);
Franky Lin's avatar
Franky Lin committed
960
	brcmf_escan_prep(cfg, &params->params_le, request);
Hante Meuleman's avatar
Hante Meuleman committed
961
962
963
964
	params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
	params->action = cpu_to_le16(action);
	params->sync_id = cpu_to_le16(0x1234);

965
	err = brcmf_fil_iovar_data_set(ifp, "escan", params, params_size);
Hante Meuleman's avatar
Hante Meuleman committed
966
967
	if (err) {
		if (err == -EBUSY)
968
			brcmf_dbg(INFO, "system busy : escan canceled\n");
Hante Meuleman's avatar
Hante Meuleman committed
969
		else
970
			brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
971
972
973
974
975
976
977
978
	}

	kfree(params);
exit:
	return err;
}

static s32
979
brcmf_do_escan(struct brcmf_cfg80211_info *cfg, struct wiphy *wiphy,
980
	       struct brcmf_if *ifp, struct cfg80211_scan_request *request)
Hante Meuleman's avatar
Hante Meuleman committed
981
982
{
	s32 err;
983
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
984
	struct brcmf_scan_results *results;
985
	struct escan_info *escan = &cfg->escan_info;
Hante Meuleman's avatar
Hante Meuleman committed
986

987
	brcmf_dbg(SCAN, "Enter\n");
988
	escan->ifp = ifp;
989
990
	escan->wiphy = wiphy;
	escan->escan_state = WL_ESCAN_STATE_SCANNING;
991
	passive_scan = cfg->active_scan ? 0 : 1;
992
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN,
993
				    passive_scan);
Hante Meuleman's avatar
Hante Meuleman committed
994
	if (err) {
995
		brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
996
997
		return err;
	}
998
	brcmf_scan_config_mpc(ifp, 0);
999
	results = (struct brcmf_scan_results *)cfg->escan_info.escan_buf;
Hante Meuleman's avatar
Hante Meuleman committed
1000
1001
1002
1003
	results->version = 0;
	results->count = 0;
	results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE;

1004
	err = escan->run(cfg, ifp, request, WL_ESCAN_ACTION_START);
Hante Meuleman's avatar
Hante Meuleman committed
1005
	if (err)
1006
		brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
1007
1008
1009
1010
	return err;
}

static s32
1011
brcmf_cfg80211_escan(struct wiphy *wiphy, struct brcmf_cfg80211_vif *vif,
Hante Meuleman's avatar
Hante Meuleman committed
1012
1013
1014
		     struct cfg80211_scan_request *request,
		     struct cfg80211_ssid *this_ssid)
{
1015
1016
	struct brcmf_if *ifp = vif->ifp;
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
Hante Meuleman's avatar
Hante Meuleman committed
1017
	struct cfg80211_ssid *ssids;
1018
	struct brcmf_cfg80211_scan_req *sr = &cfg->scan_req_int;
1019
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
1020
1021
1022
1023
1024
	bool escan_req;
	bool spec_scan;
	s32 err;
	u32 SSID_len;

1025
	brcmf_dbg(SCAN, "START ESCAN\n");
Hante Meuleman's avatar
Hante Meuleman committed
1026

1027
	if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
1028
		brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1029
1030
		return -EAGAIN;
	}
1031
	if (test_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status)) {
1032
1033
		brcmf_err("Scanning being aborted: status (%lu)\n",
			  cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1034
1035
		return -EAGAIN;
	}
1036
1037
1038
1039
1040
	if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) {
		brcmf_err("Scanning suppressed: status (%lu)\n",
			  cfg->scan_status);
		return -EAGAIN;
	}
1041
	if (test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) {
1042
		brcmf_err("Connecting: status (%lu)\n", ifp->vif->sme_state);
Hante Meuleman's avatar
Hante Meuleman committed
1043
1044
1045
		return -EAGAIN;
	}

1046
	/* If scan req comes for p2p0, send it over primary I/F */
1047
1048
	if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
		vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1049

Hante Meuleman's avatar
Hante Meuleman committed
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
	escan_req = false;
	if (request) {
		/* scan bss */
		ssids = request->ssids;
		escan_req = true;
	} else {
		/* scan in ibss */
		/* we don't do escan in ibss */
		ssids = this_ssid;
	}

1061
	cfg->scan_request = request;
1062
	set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1063
	if (escan_req) {
1064
		cfg->escan_info.run = brcmf_run_escan;
1065
		err = brcmf_p2p_scan_prep(wiphy, request, vif);
1066
1067
1068
		if (err)
			goto scan_out;

1069
		err = brcmf_do_escan(cfg, wiphy, vif->ifp, request);
1070
		if (err)
Hante Meuleman's avatar
Hante Meuleman committed
1071
1072
			goto scan_out;
	} else {
1073
1074
		brcmf_dbg(SCAN, "ssid \"%s\", ssid_len (%d)\n",
			  ssids->ssid, ssids->ssid_len);
Hante Meuleman's avatar
Hante Meuleman committed
1075
1076
1077
1078
1079
1080
1081
1082
1083
		memset(&sr->ssid_le, 0, sizeof(sr->ssid_le));
		SSID_len = min_t(u8, sizeof(sr->ssid_le.SSID), ssids->ssid_len);
		sr->ssid_le.SSID_len = cpu_to_le32(0);
		spec_scan = false;
		if (SSID_len) {
			memcpy(sr->ssid_le.SSID, ssids->ssid, SSID_len);
			sr->ssid_le.SSID_len = cpu_to_le32(SSID_len);
			spec_scan = true;
		} else
1084
			brcmf_dbg(SCAN, "Broadcast scan\n");
Hante Meuleman's avatar
Hante Meuleman committed
1085

1086
		passive_scan = cfg->active_scan ? 0 : 1;
1087
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN,
1088
					    passive_scan);
Hante Meuleman's avatar
Hante Meuleman committed
1089
		if (err) {
1090
			brcmf_err("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
1091
1092
			goto scan_out;
		}
1093
		brcmf_scan_config_mpc(ifp, 0);
1094
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
1095
					     &sr->ssid_le, sizeof(sr->ssid_le));
Hante Meuleman's avatar
Hante Meuleman committed
1096
1097
		if (err) {
			if (err == -EBUSY)
1098
1099
				brcmf_dbg(INFO, "BUSY: scan for \"%s\" canceled\n",
					  sr->ssid_le.SSID);
Hante Meuleman's avatar
Hante Meuleman committed
1100
			else
1101
				brcmf_err("WLC_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
1102

1103
			brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
1104
1105
1106
1107
			goto scan_out;
		}
	}

1108
1109
1110
1111
	/* Arm scan timeout timer */
	mod_timer(&cfg->escan_timeout, jiffies +
			WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000);

Hante Meuleman's avatar
Hante Meuleman committed
1112
1113
1114
	return 0;

scan_out:
1115
	clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
1116
	cfg->scan_request = NULL;
Hante Meuleman's avatar
Hante Meuleman committed
1117
1118
1119
	return err;
}

1120
static s32
1121
brcmf_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
1122
{
1123
	struct brcmf_cfg80211_vif *vif;
1124
1125
	s32 err = 0;

1126
	brcmf_dbg(TRACE, "Enter\n");
1127
1128
	vif = container_of(request->wdev, struct brcmf_cfg80211_vif, wdev);
	if (!check_vif_up(vif))
1129
1130
		return -EIO;

1131
	err = brcmf_cfg80211_escan(wiphy, vif, request, NULL);
Hante Meuleman's avatar
Hante Meuleman committed
1132

1133
	if (err)
1134
		brcmf_err("scan error (%d)\n", err);
1135

1136
	brcmf_dbg(TRACE, "Exit\n");
1137
1138
1139
1140
1141
1142
1143
	return err;
}

static s32 brcmf_set_rts(struct net_device *ndev, u32 rts_threshold)
{
	s32 err = 0;

1144
1145
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "rtsthresh",
				      rts_threshold);
1146
	if (err)
1147
		brcmf_err("Error (%d)\n", err);
1148
1149
1150
1151
1152
1153
1154
1155

	return err;
}

static s32 brcmf_set_frag(struct net_device *ndev, u32 frag_threshold)
{
	s32 err = 0;

1156
1157
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "fragthresh",
				      frag_threshold);
1158
	if (err)
1159
		brcmf_err("Error (%d)\n", err);
1160
1161
1162
1163
1164
1165
1166

	return err;
}

static s32 brcmf_set_retry(struct net_device *ndev, u32 retry, bool l)
{
	s32 err = 0;
Hante Meuleman's avatar
Hante Meuleman committed
1167
	u32 cmd = (l ? BRCMF_C_SET_LRL : BRCMF_C_SET_SRL);
1168

1169
	err = brcmf_fil_cmd_int_set(netdev_priv(ndev), cmd, retry);
1170
	if (err) {
1171
		brcmf_err("cmd (%d) , error (%d)\n", cmd, err);
1172
1173
1174
1175
1176
1177
1178
		return err;
	}
	return err;
}

static s32 brcmf_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
1179
1180
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct net_device *ndev = cfg_to_ndev(cfg);
1181
	struct brcmf_if *ifp = netdev_priv(ndev);
1182
1183
	s32 err = 0;

1184
	brcmf_dbg(TRACE, "Enter\n");
1185
	if (!check_vif_up(ifp->vif))
1186
1187
1188
		return -EIO;

	if (changed & WIPHY_PARAM_RTS_THRESHOLD &&
1189
1190
1191
	    (cfg->conf->rts_threshold != wiphy->rts_threshold)) {
		cfg->conf->rts_threshold = wiphy->rts_threshold;
		err = brcmf_set_rts(ndev, cfg->conf->rts_threshold);
1192
1193
1194
1195
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD &&
1196
1197
1198
	    (cfg->conf->frag_threshold != wiphy->frag_threshold)) {
		cfg->conf->frag_threshold = wiphy->frag_threshold;
		err = brcmf_set_frag(ndev, cfg->conf->frag_threshold);
1199
1200
1201
1202
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_LONG
1203
1204
1205
	    && (cfg->conf->retry_long != wiphy->retry_long)) {
		cfg->conf->retry_long = wiphy->retry_long;
		err = brcmf_set_retry(ndev, cfg->conf->retry_long, true);
1206
1207
1208
1209
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_SHORT
1210
1211
1212
	    && (cfg->conf->retry_short != wiphy->retry_short)) {
		cfg->conf->retry_short = wiphy->retry_short;
		err = brcmf_set_retry(ndev, cfg->conf->retry_short, false);
1213
1214
1215
1216
1217
		if (!err)
			goto done;
	}

done:
1218
	brcmf_dbg(TRACE, "Exit\n");
1219
1220
1221
1222
1223
1224
1225
1226
	return err;
}

static void brcmf_init_prof(struct brcmf_cfg80211_profile *prof)
{
	memset(prof, 0, sizeof(*prof));
}

1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
static u16 brcmf_map_fw_linkdown_reason(const struct brcmf_event_msg *e)
{
	u16 reason;

	switch (e->event_code) {
	case BRCMF_E_DEAUTH:
	case BRCMF_E_DEAUTH_IND:
	case BRCMF_E_DISASSOC_IND:
		reason = e->reason;
		break;
	case BRCMF_E_LINK:
	default:
		reason = 0;
		break;
	}
	return reason;
}

static void brcmf_link_down(struct brcmf_cfg80211_vif *vif, u16 reason)
1246
{
1247
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
1248
1249
	s32 err = 0;

1250
	brcmf_dbg(TRACE, "Enter\n");
1251

1252
	if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
1253
		brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n ");
1254
		err = brcmf_fil_cmd_data_set(vif->ifp,
1255
					     BRCMF_C_DISASSOC, NULL, 0);
1256
		if (err) {
1257
			brcmf_err("WLC_DISASSOC failed (%d)\n", err);
1258
		}
1259
		clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state);
1260
		cfg80211_disconnected(vif->wdev.netdev, reason, NULL, 0,
1261
				      true, GFP_KERNEL);
1262

1263
	}
1264
	clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
1265
1266
	clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
	brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
1267
	brcmf_dbg(TRACE, "Exit\n");
1268
1269
1270
1271
1272
1273
}

static s32
brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev,
		      struct cfg80211_ibss_params *params)
{
1274
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
1275
1276
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
1277
1278
1279
1280
1281
	struct brcmf_join_params join_params;
	size_t join_params_size = 0;
	s32 err = 0;
	s32 wsec = 0;
	s32 bcnprd;
1282
	u16 chanspec;
1283

1284
	brcmf_dbg(TRACE, "Enter\n");
1285
	if (!check_vif_up(ifp->vif))
1286
1287
1288
		return -EIO;

	if (params->ssid)
1289
		brcmf_dbg(CONN, "SSID: %s\n", params->ssid);