cfg80211.c 161 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

42
43
44
45
46
47
48
49
50
51
52
53
#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

54
#define BRCMF_IFACE_MAX_CNT		3
55

Hante Meuleman's avatar
Hante Meuleman committed
56
57
58
59
#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
60
#define WPS_OUI_TYPE			4
Hante Meuleman's avatar
Hante Meuleman committed
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

#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
86
#define VNDR_IE_PARSE_LIMIT		5
Hante Meuleman's avatar
Hante Meuleman committed
87
88
89

#define	DOT11_MGMT_HDR_LEN		24	/* d11 management header len */
#define	DOT11_BCN_PRB_FIXED_LEN		12	/* beacon/probe fixed length */
90

91
92
93
94
#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

95
96
97
#define BRCMF_ASSOC_PARAMS_FIXED_SIZE \
	(sizeof(struct brcmf_assoc_params_le) - sizeof(u16))

98
static bool check_vif_up(struct brcmf_cfg80211_vif *vif)
99
{
100
	if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state)) {
101
102
		brcmf_dbg(INFO, "device is not ready : status (%lu)\n",
			  vif->sme_state);
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
		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_a_rates		(__wl_rates + 4)
#define wl_a_rates_size	8
#define wl_g_rates		(__wl_rates + 0)
#define wl_g_rates_size	12

136
137
138
139
/* Band templates duplicated per wiphy. The channel info
 * is filled in after querying the device.
 */
static const struct ieee80211_supported_band __wl_band_2ghz = {
140
141
142
143
144
	.band = IEEE80211_BAND_2GHZ,
	.bitrates = wl_g_rates,
	.n_bitrates = wl_g_rates_size,
};

145
static const struct ieee80211_supported_band __wl_band_5ghz_a = {
146
147
148
149
150
	.band = IEEE80211_BAND_5GHZ,
	.bitrates = wl_a_rates,
	.n_bitrates = wl_a_rates_size,
};

151
152
/* This is to override regulatory domains defined in cfg80211 module (reg.c)
 * By default world regulatory domain defined in reg.c puts the flags
153
154
155
 * 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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
 * 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 */
170
		REG_RULE(5150-10, 5350+10, 80, 6, 20, 0),
171
		/* IEEE 802.11a, channel 100..165 */
172
		REG_RULE(5470-10, 5850+10, 80, 6, 20, 0), }
173
174
175
176
177
178
179
180
181
182
};

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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/* 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;
199
	struct parsed_vndr_ie_info ie_info[VNDR_IE_PARSE_LIMIT];
Hante Meuleman's avatar
Hante Meuleman committed
200
201
};

202
203
204
205
static int brcmf_roamoff;
module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
MODULE_PARM_DESC(roamoff, "do not use internal roaming engine");

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
/* Quarter dBm units to mW
 * Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153
 * Table is offset so the last entry is largest mW value that fits in
 * a u16.
 */

#define QDBM_OFFSET 153		/* Offset for first entry */
#define QDBM_TABLE_LEN 40	/* Table size */

/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET.
 * Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2
 */
#define QDBM_TABLE_LOW_BOUND 6493	/* Low bound */

/* Largest mW value that will round down to the last table entry,
 * QDBM_OFFSET + QDBM_TABLE_LEN-1.
 * Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) +
 * mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2.
 */
#define QDBM_TABLE_HIGH_BOUND 64938	/* High bound */

static const u16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = {
/* qdBm:	+0	+1	+2	+3	+4	+5	+6	+7 */
/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000,
/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849,
/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119,
/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811,
/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096
};

static u16 brcmf_qdbm_to_mw(u8 qdbm)
{
	uint factor = 1;
	int idx = qdbm - QDBM_OFFSET;

	if (idx >= QDBM_TABLE_LEN)
		/* clamp to max u16 mW value */
		return 0xFFFF;

	/* scale the qdBm index up to the range of the table 0-40
	 * where an offset of 40 qdBm equals a factor of 10 mW.
	 */
	while (idx < 0) {
		idx += 40;
		factor *= 10;
	}

	/* return the mW value scaled down to the correct factor of 10,
	 * adding in factor/2 to get proper rounding.
	 */
	return (nqdBm_to_mW_map[idx] + factor / 2) / factor;
}

static u8 brcmf_mw_to_qdbm(u16 mw)
{
	u8 qdbm;
	int offset;
	uint mw_uint = mw;
	uint boundary;

	/* handle boundary case */
	if (mw_uint <= 1)
		return 0;

	offset = QDBM_OFFSET;

	/* move mw into the range of the table */
	while (mw_uint < QDBM_TABLE_LOW_BOUND) {
		mw_uint *= 10;
		offset -= 40;
	}

	for (qdbm = 0; qdbm < QDBM_TABLE_LEN - 1; qdbm++) {
		boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm + 1] -
						    nqdBm_to_mW_map[qdbm]) / 2;
		if (mw_uint < boundary)
			break;
	}

	qdbm += (u8) offset;

	return qdbm;
}

290
291
static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
			       struct cfg80211_chan_def *ch)
292
293
294
295
296
297
298
299
300
301
{
	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:
302
	case NL80211_CHAN_WIDTH_20_NOHT:
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
		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;
327
328
329
330
	case NL80211_CHAN_WIDTH_80P80:
	case NL80211_CHAN_WIDTH_160:
	case NL80211_CHAN_WIDTH_5:
	case NL80211_CHAN_WIDTH_10:
331
332
333
334
335
336
337
338
339
340
	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;
341
	case IEEE80211_BAND_60GHZ:
342
343
344
345
346
347
348
349
	default:
		WARN_ON_ONCE(1);
	}
	d11inf->encchspec(&ch_inf);

	return ch_inf.chspec;
}

Franky Lin's avatar
Franky Lin committed
350
351
u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
			struct ieee80211_channel *ch)
352
{
Franky Lin's avatar
Franky Lin committed
353
	struct brcmu_chan ch_inf;
354

Franky Lin's avatar
Franky Lin committed
355
356
357
	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq);
	ch_inf.bw = BRCMU_CHAN_BW_20;
	d11inf->encchspec(&ch_inf);
358

Franky Lin's avatar
Franky Lin committed
359
	return ch_inf.chspec;
360
361
}

362
363
364
365
/* 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
 */
366
367
const struct brcmf_tlv *
brcmf_parse_tlvs(const void *buf, int buflen, uint key)
368
{
369
370
	const struct brcmf_tlv *elt = buf;
	int totlen = buflen;
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390

	/* 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
391
392
brcmf_tlv_has_ie(const u8 *ie, const u8 **tlvs, u32 *tlvs_len,
		 const u8 *oui, u32 oui_len, u8 type)
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
{
	/* 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 *
414
brcmf_find_wpaie(const u8 *parse, u32 len)
415
{
416
	const struct brcmf_tlv *ie;
417
418

	while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) {
419
		if (brcmf_tlv_has_ie((const u8 *)ie, &parse, &len,
420
421
422
423
424
425
426
				     WPA_OUI, TLV_OUI_LEN, WPA_OUI_TYPE))
			return (struct brcmf_vs_tlv *)ie;
	}
	return NULL;
}

static struct brcmf_vs_tlv *
427
brcmf_find_wpsie(const u8 *parse, u32 len)
428
{
429
	const struct brcmf_tlv *ie;
430
431
432
433
434
435
436
437
438
439

	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;
}


440
441
442
443
444
445
446
447
448
449
450
451
452
453
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));
}

454
static int
455
send_key_to_dongle(struct brcmf_if *ifp, struct brcmf_wsec_key *key)
456
457
458
459
460
{
	int err;
	struct brcmf_wsec_key_le key_le;

	convert_key_from_CPU(key, &key_le);
461

462
	brcmf_netdev_wait_pend8021x(ifp);
463

464
	err = brcmf_fil_bsscfg_data_set(ifp, "wsec_key", &key_le,
465
					sizeof(key_le));
466

467
	if (err)
468
		brcmf_err("wsec_key error (%d)\n", err);
469
470
471
	return err;
}

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
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;
}

504
505
506
static void
brcmf_cfg80211_update_proto_addr_mode(struct wireless_dev *wdev)
{
507
508
509
510
511
	struct brcmf_cfg80211_vif *vif;
	struct brcmf_if *ifp;

	vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
	ifp = vif->ifp;
512
513
514
515
516
517
518
519
520
521
522

	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);
}

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
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);
}

612
613
614
615
616
617
618
619
620
621
622
623
624
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;
}

625
626
627
628
629
630
static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
						     const char *name,
						     enum nl80211_iftype type,
						     u32 *flags,
						     struct vif_params *params)
{
631
632
	struct wireless_dev *wdev;

633
634
635
636
637
638
639
640
641
	brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
	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);
642
643
644
645
646
	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;
647
648
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
649
	case NL80211_IFTYPE_P2P_DEVICE:
650
651
652
653
		wdev = brcmf_p2p_add_vif(wiphy, name, type, flags, params);
		if (!IS_ERR(wdev))
			brcmf_cfg80211_update_proto_addr_mode(wdev);
		return wdev;
654
655
656
657
658
659
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return ERR_PTR(-EINVAL);
	}
}

660
661
static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
{
662
	if (brcmf_feat_is_quirk_enabled(ifp, BRCMF_FEAT_QUIRK_NEED_MPC))
663
664
665
		brcmf_set_mpc(ifp, mpc);
}

666
void brcmf_set_mpc(struct brcmf_if *ifp, int mpc)
667
668
669
670
671
672
673
674
675
676
677
678
679
{
	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);
	}
}

680
681
682
s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
				struct brcmf_if *ifp, bool aborted,
				bool fw_abort)
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
{
	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));
		memset(params_le.bssid, 0xFF, ETH_ALEN);
		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 */
713
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
714
715
716
717
					     &params_le, sizeof(params_le));
		if (err)
			brcmf_err("Scan abort  failed\n");
	}
718

719
	brcmf_scan_config_mpc(ifp, 1);
720

721
722
723
724
725
726
727
728
729
730
731
732
733
734
	/*
	 * 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);
	}
735
736
	if (!test_and_clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
		brcmf_dbg(SCAN, "Scan complete, probably P2P scan\n");
737
738
739
740

	return err;
}

741
742
743
static
int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
744
745
746
747
748
749
750
751
752
	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) &&
753
754
755
		    cfg->escan_info.ifp == netdev_priv(ndev))
			brcmf_notify_escan_complete(cfg, netdev_priv(ndev),
						    true, true);
756
757
758
759

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

760
761
762
763
764
765
766
767
768
769
770
	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:
771
	case NL80211_IFTYPE_P2P_DEVICE:
772
773
774
775
776
777
778
779
		return brcmf_p2p_del_vif(wiphy, wdev);
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return -EINVAL;
	}
	return -EOPNOTSUPP;
}

780
781
782
783
784
static s32
brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
			 enum nl80211_iftype type, u32 *flags,
			 struct vif_params *params)
{
785
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
786
	struct brcmf_if *ifp = netdev_priv(ndev);
787
	struct brcmf_cfg80211_vif *vif = ifp->vif;
788
	s32 infra = 0;
Hante Meuleman's avatar
Hante Meuleman committed
789
	s32 ap = 0;
790
791
	s32 err = 0;

792
	brcmf_dbg(TRACE, "Enter, ndev=%p, type=%d\n", ndev, type);
793
794
795
796

	switch (type) {
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_WDS:
797
798
		brcmf_err("type (%d) : currently we do not support this type\n",
			  type);
799
800
801
802
803
		return -EOPNOTSUPP;
	case NL80211_IFTYPE_ADHOC:
		infra = 0;
		break;
	case NL80211_IFTYPE_STATION:
804
805
806
807
808
809
810
811
812
813
814
815
		/* Ignore change for p2p IF. Unclear why supplicant does this */
		if ((vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) ||
		    (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO)) {
			brcmf_dbg(TRACE, "Ignoring cmd for p2p if\n");
			/* WAR: It is unexpected to get a change of VIF for P2P
			 * IF, but it happens. The request can not be handled
			 * but returning EPERM causes a crash. Returning 0
			 * without setting ieee80211_ptr->iftype causes trace
			 * (WARN_ON) but it works with wpa_supplicant
			 */
			return 0;
		}
816
817
		infra = 1;
		break;
Hante Meuleman's avatar
Hante Meuleman committed
818
	case NL80211_IFTYPE_AP:
819
	case NL80211_IFTYPE_P2P_GO:
Hante Meuleman's avatar
Hante Meuleman committed
820
821
		ap = 1;
		break;
822
823
824
825
826
	default:
		err = -EINVAL;
		goto done;
	}

Hante Meuleman's avatar
Hante Meuleman committed
827
	if (ap) {
828
829
830
831
832
833
834
835
		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) {
			set_bit(BRCMF_VIF_STATUS_AP_CREATING, &vif->sme_state);
			brcmf_dbg(INFO, "IF Type = AP\n");
		}
836
	} else {
837
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, infra);
Hante Meuleman's avatar
Hante Meuleman committed
838
		if (err) {
839
			brcmf_err("WLC_SET_INFRA error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
840
841
842
			err = -EAGAIN;
			goto done;
		}
843
		brcmf_dbg(INFO, "IF Type = %s\n", brcmf_is_ibssmode(vif) ?
844
			  "Adhoc" : "Infra");
845
	}
Hante Meuleman's avatar
Hante Meuleman committed
846
	ndev->ieee80211_ptr->iftype = type;
847

848
849
	brcmf_cfg80211_update_proto_addr_mode(&vif->wdev);

850
done:
851
	brcmf_dbg(TRACE, "Exit\n");
852
853
854
855

	return err;
}

Franky Lin's avatar
Franky Lin committed
856
857
static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
			     struct brcmf_scan_params_le *params_le,
Hante Meuleman's avatar
Hante Meuleman committed
858
859
860
861
862
863
			     struct cfg80211_scan_request *request)
{
	u32 n_ssids;
	u32 n_channels;
	s32 i;
	s32 offset;
864
	u16 chanspec;
Hante Meuleman's avatar
Hante Meuleman committed
865
	char *ptr;
866
	struct brcmf_ssid_le ssid_le;
Hante Meuleman's avatar
Hante Meuleman committed
867

868
	memset(params_le->bssid, 0xFF, ETH_ALEN);
Hante Meuleman's avatar
Hante Meuleman committed
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
	params_le->bss_type = DOT11_BSSTYPE_ANY;
	params_le->scan_type = 0;
	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));

	/* if request is null exit so it will be all channel broadcast scan */
	if (!request)
		return;

	n_ssids = request->n_ssids;
	n_channels = request->n_channels;
	/* Copy channel array if applicable */
885
886
	brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
		  n_channels);
Hante Meuleman's avatar
Hante Meuleman committed
887
888
	if (n_channels > 0) {
		for (i = 0; i < n_channels; i++) {
Franky Lin's avatar
Franky Lin committed
889
890
			chanspec = channel_to_chanspec(&cfg->d11inf,
						       request->channels[i]);
891
892
			brcmf_dbg(SCAN, "Chan : %d, Channel spec: %x\n",
				  request->channels[i]->hw_value, chanspec);
893
			params_le->channel_list[i] = cpu_to_le16(chanspec);
Hante Meuleman's avatar
Hante Meuleman committed
894
895
		}
	} else {
896
		brcmf_dbg(SCAN, "Scanning all channels\n");
Hante Meuleman's avatar
Hante Meuleman committed
897
898
	}
	/* Copy ssid array if applicable */
899
	brcmf_dbg(SCAN, "### List of SSIDs to scan ### %d\n", n_ssids);
Hante Meuleman's avatar
Hante Meuleman committed
900
901
902
903
904
905
	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++) {
906
907
908
909
910
911
			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)
912
				brcmf_dbg(SCAN, "%d: Broadcast scan\n", i);
Hante Meuleman's avatar
Hante Meuleman committed
913
			else
914
915
				brcmf_dbg(SCAN, "%d: scan for  %s size =%d\n",
					  i, ssid_le.SSID, ssid_le.SSID_len);
916
917
			memcpy(ptr, &ssid_le, sizeof(ssid_le));
			ptr += sizeof(ssid_le);
Hante Meuleman's avatar
Hante Meuleman committed
918
919
		}
	} else {
920
		brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids);
Hante Meuleman's avatar
Hante Meuleman committed
921
		if ((request->ssids) && request->ssids->ssid_len) {
922
923
924
			brcmf_dbg(SCAN, "SSID %s len=%d\n",
				  params_le->ssid_le.SSID,
				  request->ssids->ssid_len);
Hante Meuleman's avatar
Hante Meuleman committed
925
926
927
928
929
930
931
932
933
934
935
936
937
			params_le->ssid_le.SSID_len =
				cpu_to_le32(request->ssids->ssid_len);
			memcpy(&params_le->ssid_le.SSID, request->ssids->ssid,
				request->ssids->ssid_len);
		}
	}
	/* 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
938
brcmf_run_escan(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp,
Hante Meuleman's avatar
Hante Meuleman committed
939
940
941
942
943
944
945
		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;

946
	brcmf_dbg(SCAN, "E-SCAN START\n");
Hante Meuleman's avatar
Hante Meuleman committed
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961

	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
962
	brcmf_escan_prep(cfg, &params->params_le, request);
Hante Meuleman's avatar
Hante Meuleman committed
963
964
965
966
	params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
	params->action = cpu_to_le16(action);
	params->sync_id = cpu_to_le16(0x1234);

967
	err = brcmf_fil_iovar_data_set(ifp, "escan", params, params_size);
Hante Meuleman's avatar
Hante Meuleman committed
968
969
	if (err) {
		if (err == -EBUSY)
970
			brcmf_dbg(INFO, "system busy : escan canceled\n");
Hante Meuleman's avatar
Hante Meuleman committed
971
		else
972
			brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
973
974
975
976
977
978
979
980
	}

	kfree(params);
exit:
	return err;
}

static s32
981
brcmf_do_escan(struct brcmf_cfg80211_info *cfg, struct wiphy *wiphy,
982
	       struct brcmf_if *ifp, struct cfg80211_scan_request *request)
Hante Meuleman's avatar
Hante Meuleman committed
983
984
{
	s32 err;
985
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
986
	struct brcmf_scan_results *results;
987
	struct escan_info *escan = &cfg->escan_info;
Hante Meuleman's avatar
Hante Meuleman committed
988

989
	brcmf_dbg(SCAN, "Enter\n");
990
	escan->ifp = ifp;
991
992
	escan->wiphy = wiphy;
	escan->escan_state = WL_ESCAN_STATE_SCANNING;
993
	passive_scan = cfg->active_scan ? 0 : 1;
994
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN,
995
				    passive_scan);
Hante Meuleman's avatar
Hante Meuleman committed
996
	if (err) {
997
		brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
998
999
		return err;
	}
1000
	brcmf_scan_config_mpc(ifp, 0);
1001
	results = (struct brcmf_scan_results *)cfg->escan_info.escan_buf;
Hante Meuleman's avatar
Hante Meuleman committed
1002
1003
1004
1005
	results->version = 0;
	results->count = 0;
	results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE;

1006
	err = escan->run(cfg, ifp, request, WL_ESCAN_ACTION_START);
Hante Meuleman's avatar
Hante Meuleman committed
1007
	if (err)
1008
		brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
1009
1010
1011
1012
	return err;
}

static s32
1013
brcmf_cfg80211_escan(struct wiphy *wiphy, struct brcmf_cfg80211_vif *vif,
Hante Meuleman's avatar
Hante Meuleman committed
1014
1015
1016
		     struct cfg80211_scan_request *request,
		     struct cfg80211_ssid *this_ssid)
{
1017
1018
	struct brcmf_if *ifp = vif->ifp;
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
Hante Meuleman's avatar
Hante Meuleman committed
1019
	struct cfg80211_ssid *ssids;
1020
	struct brcmf_cfg80211_scan_req *sr = &cfg->scan_req_int;
1021
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
1022
1023
1024
1025
1026
	bool escan_req;
	bool spec_scan;
	s32 err;
	u32 SSID_len;

1027
	brcmf_dbg(SCAN, "START ESCAN\n");
Hante Meuleman's avatar
Hante Meuleman committed
1028

1029
	if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
1030
		brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1031
1032
		return -EAGAIN;
	}
1033
	if (test_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status)) {
1034
1035
		brcmf_err("Scanning being aborted: status (%lu)\n",
			  cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1036
1037
		return -EAGAIN;
	}
1038
1039
1040
1041
1042
	if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) {
		brcmf_err("Scanning suppressed: status (%lu)\n",
			  cfg->scan_status);
		return -EAGAIN;
	}
1043
	if (test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) {
1044
		brcmf_err("Connecting: status (%lu)\n", ifp->vif->sme_state);
Hante Meuleman's avatar
Hante Meuleman committed
1045
1046
1047
		return -EAGAIN;
	}

1048
	/* If scan req comes for p2p0, send it over primary I/F */
1049
1050
	if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
		vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1051

Hante Meuleman's avatar
Hante Meuleman committed
1052
	/* Arm scan timeout timer */
1053
	mod_timer(&cfg->escan_timeout, jiffies +
Hante Meuleman's avatar
Hante Meuleman committed
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
			WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000);

	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;
	}

1067
	cfg->scan_request = request;
1068
	set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
1069
	if (escan_req) {
1070
		cfg->escan_info.run = brcmf_run_escan;
1071
		err = brcmf_p2p_scan_prep(wiphy, request, vif);
1072
1073
1074
		if (err)
			goto scan_out;

1075
		err = brcmf_do_escan(cfg, wiphy, vif->ifp, request);
1076
		if (err)
Hante Meuleman's avatar
Hante Meuleman committed
1077
1078
			goto scan_out;
	} else {
1079
1080
		brcmf_dbg(SCAN, "ssid \"%s\", ssid_len (%d)\n",
			  ssids->ssid, ssids->ssid_len);
Hante Meuleman's avatar
Hante Meuleman committed
1081
1082
1083
1084
1085
1086
1087
1088
1089
		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
1090
			brcmf_dbg(SCAN, "Broadcast scan\n");
Hante Meuleman's avatar
Hante Meuleman committed
1091

1092
		passive_scan = cfg->active_scan ? 0 : 1;
1093
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN,
1094
					    passive_scan);
Hante Meuleman's avatar
Hante Meuleman committed
1095
		if (err) {
1096
			brcmf_err("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
1097
1098
			goto scan_out;
		}
1099
		brcmf_scan_config_mpc(ifp, 0);
1100
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
1101
					     &sr->ssid_le, sizeof(sr->ssid_le));
Hante Meuleman's avatar
Hante Meuleman committed
1102
1103
		if (err) {
			if (err == -EBUSY)
1104
1105
				brcmf_dbg(INFO, "BUSY: scan for \"%s\" canceled\n",
					  sr->ssid_le.SSID);
Hante Meuleman's avatar
Hante Meuleman committed
1106
			else
1107
				brcmf_err("WLC_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
1108

1109
			brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
1110
1111
1112
1113
1114
1115
1116
			goto scan_out;
		}
	}

	return 0;

scan_out:
1117
	clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
1118
1119
1120
	if (timer_pending(&cfg->escan_timeout))
		del_timer_sync(&cfg->escan_timeout);
	cfg->scan_request = NULL;
Hante Meuleman's avatar
Hante Meuleman committed
1121
1122
1123
	return err;
}

1124
static s32
1125
brcmf_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
1126
{
1127
	struct brcmf_cfg80211_vif *vif;
1128
1129
	s32 err = 0;

1130
	brcmf_dbg(TRACE, "Enter\n");
1131
1132
	vif = container_of(request->wdev, struct brcmf_cfg80211_vif, wdev);
	if (!check_vif_up(vif))
1133
1134
		return -EIO;

1135
	err = brcmf_cfg80211_escan(wiphy, vif, request, NULL);
Hante Meuleman's avatar
Hante Meuleman committed
1136

1137
	if (err)
1138
		brcmf_err("scan error (%d)\n", err);
1139

1140
	brcmf_dbg(TRACE, "Exit\n");
1141
1142
1143
1144
1145
1146
1147
	return err;
}

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

1148
1149
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "rtsthresh",
				      rts_threshold);
1150
	if (err)
1151
		brcmf_err("Error (%d)\n", err);
1152
1153
1154
1155
1156
1157
1158
1159

	return err;
}

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

1160
1161
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "fragthresh",
				      frag_threshold);
1162
	if (err)
1163
		brcmf_err("Error (%d)\n", err);
1164
1165
1166
1167
1168
1169
1170

	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
1171
	u32 cmd = (l ? BRCMF_C_SET_LRL : BRCMF_C_SET_SRL);
1172

1173
	err = brcmf_fil_cmd_int_set(netdev_priv(ndev), cmd, retry);
1174
	if (err) {
1175
		brcmf_err("cmd (%d) , error (%d)\n", cmd, err);
1176
1177
1178
1179
1180
1181
1182
		return err;
	}
	return err;
}

static s32 brcmf_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
1183
1184
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct net_device *ndev = cfg_to_ndev(cfg);
1185
	struct brcmf_if *ifp = netdev_priv(ndev);
1186
1187
	s32 err = 0;

1188
	brcmf_dbg(TRACE, "Enter\n");
1189
	if (!check_vif_up(ifp->vif))
1190
1191
1192
		return -EIO;

	if (changed & WIPHY_PARAM_RTS_THRESHOLD &&
1193
1194
1195
	    (cfg->conf->rts_threshold != wiphy->rts_threshold)) {
		cfg->conf->rts_threshold = wiphy->rts_threshold;
		err = brcmf_set_rts(ndev, cfg->conf->rts_threshold);
1196
1197
1198
1199
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD &&
1200
1201
1202
	    (cfg->conf->frag_threshold != wiphy->frag_threshold)) {
		cfg->conf->frag_threshold = wiphy->frag_threshold;
		err = brcmf_set_frag(ndev, cfg->conf->frag_threshold);
1203
1204
1205
1206
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_LONG
1207
1208
1209
	    && (cfg->conf->retry_long != wiphy->retry_long)) {
		cfg->conf->retry_long = wiphy->retry_long;
		err = brcmf_set_retry(ndev, cfg->conf->retry_long, true);
1210
1211
1212
1213
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_SHORT
1214
1215
1216
	    && (cfg->conf->retry_short != wiphy->retry_short)) {
		cfg->conf->retry_short = wiphy->retry_short;
		err = brcmf_set_retry(ndev, cfg->conf->retry_short, false);
1217
1218
1219
1220
1221
		if (!err)
			goto done;
	}

done:
1222
	brcmf_dbg(TRACE, "Exit\n");
1223
1224
1225
1226
1227
1228
1229
1230
	return err;
}

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

1231
static void brcmf_link_down(struct brcmf_cfg80211_vif *vif)
1232
{
1233
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
1234
1235
	s32 err = 0;

1236
	brcmf_dbg(TRACE, "Enter\n");
1237

1238
	if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
1239
		brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n ");
1240
		err = brcmf_fil_cmd_data_set(vif->ifp,
1241
					     BRCMF_C_DISASSOC, NULL, 0);
1242
		if (err) {
1243
			brcmf_err("WLC_DISASSOC failed (%d)\n", err);
1244
		}
1245
		clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state);
1246
1247
		cfg80211_disconnected(vif->wdev.netdev, 0, NULL, 0, GFP_KERNEL);

1248
	}
1249
	clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
1250
1251
	clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
	brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
1252
	brcmf_dbg(TRACE, "Exit\n");
1253
1254
1255
1256
1257
1258
}

static s32
brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev,
		      struct cfg80211_ibss_params *params)
{
1259
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
1260
1261
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
1262
1263
1264
1265
1266
	struct brcmf_join_params join_params;
	size_t join_params_size = 0;
	s32 err = 0;
	s32 wsec = 0;
	s32 bcnprd;
1267
	u16 chanspec;
1268

1269
	brcmf_dbg(TRACE, "Enter\n");
1270
	if (!check_vif_up(ifp->vif))
1271
1272
1273
		return -EIO;

	if (params->ssid)
1274
		brcmf_dbg(CONN, "SSID: %s\n", params->ssid);
1275
	else {
1276
		brcmf_dbg(CONN, "SSID: NULL, Not supported\n");
1277
1278
1279
		return -EOPNOTSUPP;
	}

1280
	set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
1281
1282

	if (params->bssid)
1283
		brcmf_dbg(CONN, "BSSID: %pM\n", params->bssid);
1284
	else
1285
		brcmf_dbg(CONN, "No BSSID specified\n");
1286

1287
	if (params->chandef.chan)
1288
1289
		brcmf_dbg(CONN, "channel: %d\n",
			  params->chandef.chan->center_freq);
1290
	else
1291
		brcmf_dbg(CONN, "no channel specified\n");
1292
1293

	if (params->channel_fixed)
1294
		brcmf_dbg(CONN, "fixed channel required\n");
1295
	else
1296
		brcmf_dbg(CONN, "no fixed channel required\n");