cfg80211.c 155 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
29

#include <brcmu_utils.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include "dhd.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
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
{
	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:
		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;
	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;
	default:
		WARN_ON_ONCE(1);
	}
	d11inf->encchspec(&ch_inf);

	return ch_inf.chspec;
}

Franky Lin's avatar
Franky Lin committed
344
345
u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
			struct ieee80211_channel *ch)
346
{
Franky Lin's avatar
Franky Lin committed
347
	struct brcmu_chan ch_inf;
348

Franky Lin's avatar
Franky Lin committed
349
350
351
	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq);
	ch_inf.bw = BRCMU_CHAN_BW_20;
	d11inf->encchspec(&ch_inf);
352

Franky Lin's avatar
Franky Lin committed
353
	return ch_inf.chspec;
354
355
}

356
357
358
359
/* 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
 */
360
361
const struct brcmf_tlv *
brcmf_parse_tlvs(const void *buf, int buflen, uint key)
362
{
363
364
	const struct brcmf_tlv *elt = buf;
	int totlen = buflen;
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384

	/* 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
385
386
brcmf_tlv_has_ie(const u8 *ie, const u8 **tlvs, u32 *tlvs_len,
		 const u8 *oui, u32 oui_len, u8 type)
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
{
	/* 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 *
408
brcmf_find_wpaie(const u8 *parse, u32 len)
409
{
410
	const struct brcmf_tlv *ie;
411
412

	while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) {
413
		if (brcmf_tlv_has_ie((const u8 *)ie, &parse, &len,
414
415
416
417
418
419
420
				     WPA_OUI, TLV_OUI_LEN, WPA_OUI_TYPE))
			return (struct brcmf_vs_tlv *)ie;
	}
	return NULL;
}

static struct brcmf_vs_tlv *
421
brcmf_find_wpsie(const u8 *parse, u32 len)
422
{
423
	const struct brcmf_tlv *ie;
424
425
426
427
428
429
430
431
432
433

	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;
}


434
435
436
437
438
439
440
441
442
443
444
445
446
447
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));
}

448
static int
449
send_key_to_dongle(struct net_device *ndev, struct brcmf_wsec_key *key)
450
451
452
453
454
{
	int err;
	struct brcmf_wsec_key_le key_le;

	convert_key_from_CPU(key, &key_le);
455

456
457
	brcmf_netdev_wait_pend8021x(ndev);

458
	err = brcmf_fil_bsscfg_data_set(netdev_priv(ndev), "wsec_key", &key_le,
459
					sizeof(key_le));
460

461
	if (err)
462
		brcmf_err("wsec_key error (%d)\n", err);
463
464
465
	return err;
}

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
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;
}

498
499
500
static void
brcmf_cfg80211_update_proto_addr_mode(struct wireless_dev *wdev)
{
501
502
503
504
505
	struct brcmf_cfg80211_vif *vif;
	struct brcmf_if *ifp;

	vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
	ifp = vif->ifp;
506
507
508
509
510
511
512
513
514
515
516

	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);
}

517
518
519
520
521
522
523
524
525
526
527
528
529
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;
}

530
531
532
533
534
535
static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
						     const char *name,
						     enum nl80211_iftype type,
						     u32 *flags,
						     struct vif_params *params)
{
536
537
	struct wireless_dev *wdev;

538
539
540
541
542
543
544
545
546
547
548
549
	brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
	switch (type) {
	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 ERR_PTR(-EOPNOTSUPP);
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
550
	case NL80211_IFTYPE_P2P_DEVICE:
551
552
553
554
		wdev = brcmf_p2p_add_vif(wiphy, name, type, flags, params);
		if (!IS_ERR(wdev))
			brcmf_cfg80211_update_proto_addr_mode(wdev);
		return wdev;
555
556
557
558
559
560
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return ERR_PTR(-EINVAL);
	}
}

561
562
static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
{
563
	if (brcmf_feat_is_quirk_enabled(ifp, BRCMF_FEAT_QUIRK_NEED_MPC))
564
565
566
		brcmf_set_mpc(ifp, mpc);
}

567
void brcmf_set_mpc(struct brcmf_if *ifp, int mpc)
568
569
570
571
572
573
574
575
576
577
578
579
580
{
	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);
	}
}

581
582
583
s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
				struct brcmf_if *ifp, bool aborted,
				bool fw_abort)
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
{
	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 */
614
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
615
616
617
618
					     &params_le, sizeof(params_le));
		if (err)
			brcmf_err("Scan abort  failed\n");
	}
619

620
	brcmf_scan_config_mpc(ifp, 1);
621

622
623
624
625
626
627
628
629
630
631
632
633
634
635
	/*
	 * 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);
	}
636
637
	if (!test_and_clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
		brcmf_dbg(SCAN, "Scan complete, probably P2P scan\n");
638
639
640
641

	return err;
}

642
643
644
static
int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
645
646
647
648
649
650
651
652
653
	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) &&
654
655
656
		    cfg->escan_info.ifp == netdev_priv(ndev))
			brcmf_notify_escan_complete(cfg, netdev_priv(ndev),
						    true, true);
657
658
659
660

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

661
662
663
664
665
666
667
668
669
670
671
	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:
672
	case NL80211_IFTYPE_P2P_DEVICE:
673
674
675
676
677
678
679
680
		return brcmf_p2p_del_vif(wiphy, wdev);
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return -EINVAL;
	}
	return -EOPNOTSUPP;
}

681
682
683
684
685
static s32
brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
			 enum nl80211_iftype type, u32 *flags,
			 struct vif_params *params)
{
686
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
687
	struct brcmf_if *ifp = netdev_priv(ndev);
688
	struct brcmf_cfg80211_vif *vif = ifp->vif;
689
	s32 infra = 0;
Hante Meuleman's avatar
Hante Meuleman committed
690
	s32 ap = 0;
691
692
	s32 err = 0;

693
	brcmf_dbg(TRACE, "Enter, ndev=%p, type=%d\n", ndev, type);
694
695
696
697

	switch (type) {
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_WDS:
698
699
		brcmf_err("type (%d) : currently we do not support this type\n",
			  type);
700
701
702
703
704
		return -EOPNOTSUPP;
	case NL80211_IFTYPE_ADHOC:
		infra = 0;
		break;
	case NL80211_IFTYPE_STATION:
705
706
707
708
709
710
711
712
713
714
715
716
		/* 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;
		}
717
718
		infra = 1;
		break;
Hante Meuleman's avatar
Hante Meuleman committed
719
	case NL80211_IFTYPE_AP:
720
	case NL80211_IFTYPE_P2P_GO:
Hante Meuleman's avatar
Hante Meuleman committed
721
722
		ap = 1;
		break;
723
724
725
726
727
	default:
		err = -EINVAL;
		goto done;
	}

Hante Meuleman's avatar
Hante Meuleman committed
728
	if (ap) {
729
730
731
732
733
734
735
736
		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");
		}
737
	} else {
738
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, infra);
Hante Meuleman's avatar
Hante Meuleman committed
739
		if (err) {
740
			brcmf_err("WLC_SET_INFRA error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
741
742
743
			err = -EAGAIN;
			goto done;
		}
744
		brcmf_dbg(INFO, "IF Type = %s\n", brcmf_is_ibssmode(vif) ?
745
			  "Adhoc" : "Infra");
746
	}
Hante Meuleman's avatar
Hante Meuleman committed
747
	ndev->ieee80211_ptr->iftype = type;
748

749
750
	brcmf_cfg80211_update_proto_addr_mode(&vif->wdev);

751
done:
752
	brcmf_dbg(TRACE, "Exit\n");
753
754
755
756

	return err;
}

Franky Lin's avatar
Franky Lin committed
757
758
static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
			     struct brcmf_scan_params_le *params_le,
Hante Meuleman's avatar
Hante Meuleman committed
759
760
761
762
763
764
			     struct cfg80211_scan_request *request)
{
	u32 n_ssids;
	u32 n_channels;
	s32 i;
	s32 offset;
765
	u16 chanspec;
Hante Meuleman's avatar
Hante Meuleman committed
766
	char *ptr;
767
	struct brcmf_ssid_le ssid_le;
Hante Meuleman's avatar
Hante Meuleman committed
768

769
	memset(params_le->bssid, 0xFF, ETH_ALEN);
Hante Meuleman's avatar
Hante Meuleman committed
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
	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 */
786
787
	brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
		  n_channels);
Hante Meuleman's avatar
Hante Meuleman committed
788
789
	if (n_channels > 0) {
		for (i = 0; i < n_channels; i++) {
Franky Lin's avatar
Franky Lin committed
790
791
			chanspec = channel_to_chanspec(&cfg->d11inf,
						       request->channels[i]);
792
793
			brcmf_dbg(SCAN, "Chan : %d, Channel spec: %x\n",
				  request->channels[i]->hw_value, chanspec);
794
			params_le->channel_list[i] = cpu_to_le16(chanspec);
Hante Meuleman's avatar
Hante Meuleman committed
795
796
		}
	} else {
797
		brcmf_dbg(SCAN, "Scanning all channels\n");
Hante Meuleman's avatar
Hante Meuleman committed
798
799
	}
	/* Copy ssid array if applicable */
800
	brcmf_dbg(SCAN, "### List of SSIDs to scan ### %d\n", n_ssids);
Hante Meuleman's avatar
Hante Meuleman committed
801
802
803
804
805
806
	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++) {
807
808
809
810
811
812
			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)
813
				brcmf_dbg(SCAN, "%d: Broadcast scan\n", i);
Hante Meuleman's avatar
Hante Meuleman committed
814
			else
815
816
				brcmf_dbg(SCAN, "%d: scan for  %s size =%d\n",
					  i, ssid_le.SSID, ssid_le.SSID_len);
817
818
			memcpy(ptr, &ssid_le, sizeof(ssid_le));
			ptr += sizeof(ssid_le);
Hante Meuleman's avatar
Hante Meuleman committed
819
820
		}
	} else {
821
		brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids);
Hante Meuleman's avatar
Hante Meuleman committed
822
		if ((request->ssids) && request->ssids->ssid_len) {
823
824
825
			brcmf_dbg(SCAN, "SSID %s len=%d\n",
				  params_le->ssid_le.SSID,
				  request->ssids->ssid_len);
Hante Meuleman's avatar
Hante Meuleman committed
826
827
828
829
830
831
832
833
834
835
836
837
838
			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
839
brcmf_run_escan(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp,
Hante Meuleman's avatar
Hante Meuleman committed
840
841
842
843
844
845
846
		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;

847
	brcmf_dbg(SCAN, "E-SCAN START\n");
Hante Meuleman's avatar
Hante Meuleman committed
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862

	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
863
	brcmf_escan_prep(cfg, &params->params_le, request);
Hante Meuleman's avatar
Hante Meuleman committed
864
865
866
867
	params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
	params->action = cpu_to_le16(action);
	params->sync_id = cpu_to_le16(0x1234);

868
	err = brcmf_fil_iovar_data_set(ifp, "escan", params, params_size);
Hante Meuleman's avatar
Hante Meuleman committed
869
870
	if (err) {
		if (err == -EBUSY)
871
			brcmf_dbg(INFO, "system busy : escan canceled\n");
Hante Meuleman's avatar
Hante Meuleman committed
872
		else
873
			brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
874
875
876
877
878
879
880
881
	}

	kfree(params);
exit:
	return err;
}

static s32
882
brcmf_do_escan(struct brcmf_cfg80211_info *cfg, struct wiphy *wiphy,
883
	       struct brcmf_if *ifp, struct cfg80211_scan_request *request)
Hante Meuleman's avatar
Hante Meuleman committed
884
885
{
	s32 err;
886
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
887
	struct brcmf_scan_results *results;
888
	struct escan_info *escan = &cfg->escan_info;
Hante Meuleman's avatar
Hante Meuleman committed
889

890
	brcmf_dbg(SCAN, "Enter\n");
891
	escan->ifp = ifp;
892
893
	escan->wiphy = wiphy;
	escan->escan_state = WL_ESCAN_STATE_SCANNING;
894
	passive_scan = cfg->active_scan ? 0 : 1;
895
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN,
896
				    passive_scan);
Hante Meuleman's avatar
Hante Meuleman committed
897
	if (err) {
898
		brcmf_err("error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
899
900
		return err;
	}
901
	brcmf_scan_config_mpc(ifp, 0);
902
	results = (struct brcmf_scan_results *)cfg->escan_info.escan_buf;
Hante Meuleman's avatar
Hante Meuleman committed
903
904
905
906
	results->version = 0;
	results->count = 0;
	results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE;

907
	err = escan->run(cfg, ifp, request, WL_ESCAN_ACTION_START);
Hante Meuleman's avatar
Hante Meuleman committed
908
	if (err)
909
		brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
910
911
912
913
	return err;
}

static s32
914
brcmf_cfg80211_escan(struct wiphy *wiphy, struct brcmf_cfg80211_vif *vif,
Hante Meuleman's avatar
Hante Meuleman committed
915
916
917
		     struct cfg80211_scan_request *request,
		     struct cfg80211_ssid *this_ssid)
{
918
919
	struct brcmf_if *ifp = vif->ifp;
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
Hante Meuleman's avatar
Hante Meuleman committed
920
	struct cfg80211_ssid *ssids;
921
	struct brcmf_cfg80211_scan_req *sr = &cfg->scan_req_int;
922
	u32 passive_scan;
Hante Meuleman's avatar
Hante Meuleman committed
923
924
925
926
927
	bool escan_req;
	bool spec_scan;
	s32 err;
	u32 SSID_len;

928
	brcmf_dbg(SCAN, "START ESCAN\n");
Hante Meuleman's avatar
Hante Meuleman committed
929

930
	if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
931
		brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
932
933
		return -EAGAIN;
	}
934
	if (test_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status)) {
935
936
		brcmf_err("Scanning being aborted: status (%lu)\n",
			  cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
937
938
		return -EAGAIN;
	}
939
940
941
942
943
	if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) {
		brcmf_err("Scanning suppressed: status (%lu)\n",
			  cfg->scan_status);
		return -EAGAIN;
	}
944
	if (test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) {
945
		brcmf_err("Connecting: status (%lu)\n", ifp->vif->sme_state);
Hante Meuleman's avatar
Hante Meuleman committed
946
947
948
		return -EAGAIN;
	}

949
	/* If scan req comes for p2p0, send it over primary I/F */
950
951
	if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
		vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
952

Hante Meuleman's avatar
Hante Meuleman committed
953
	/* Arm scan timeout timer */
954
	mod_timer(&cfg->escan_timeout, jiffies +
Hante Meuleman's avatar
Hante Meuleman committed
955
956
957
958
959
960
961
962
963
964
965
966
967
			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;
	}

968
	cfg->scan_request = request;
969
	set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
Hante Meuleman's avatar
Hante Meuleman committed
970
	if (escan_req) {
971
		cfg->escan_info.run = brcmf_run_escan;
972
		err = brcmf_p2p_scan_prep(wiphy, request, vif);
973
974
975
		if (err)
			goto scan_out;

976
		err = brcmf_do_escan(cfg, wiphy, vif->ifp, request);
977
		if (err)
Hante Meuleman's avatar
Hante Meuleman committed
978
979
			goto scan_out;
	} else {
980
981
		brcmf_dbg(SCAN, "ssid \"%s\", ssid_len (%d)\n",
			  ssids->ssid, ssids->ssid_len);
Hante Meuleman's avatar
Hante Meuleman committed
982
983
984
985
986
987
988
989
990
		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
991
			brcmf_dbg(SCAN, "Broadcast scan\n");
Hante Meuleman's avatar
Hante Meuleman committed
992

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("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
998
999
			goto scan_out;
		}
1000
		brcmf_scan_config_mpc(ifp, 0);
1001
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN,
1002
					     &sr->ssid_le, sizeof(sr->ssid_le));
Hante Meuleman's avatar
Hante Meuleman committed
1003
1004
		if (err) {
			if (err == -EBUSY)
1005
1006
				brcmf_dbg(INFO, "BUSY: scan for \"%s\" canceled\n",
					  sr->ssid_le.SSID);
Hante Meuleman's avatar
Hante Meuleman committed
1007
			else
1008
				brcmf_err("WLC_SCAN error (%d)\n", err);
Hante Meuleman's avatar
Hante Meuleman committed
1009

1010
			brcmf_scan_config_mpc(ifp, 1);
Hante Meuleman's avatar
Hante Meuleman committed
1011
1012
1013
1014
1015
1016
1017
			goto scan_out;
		}
	}

	return 0;

scan_out:
1018
	clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
1019
1020
1021
	if (timer_pending(&cfg->escan_timeout))
		del_timer_sync(&cfg->escan_timeout);
	cfg->scan_request = NULL;
Hante Meuleman's avatar
Hante Meuleman committed
1022
1023
1024
	return err;
}

1025
static s32
1026
brcmf_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
1027
{
1028
	struct brcmf_cfg80211_vif *vif;
1029
1030
	s32 err = 0;

1031
	brcmf_dbg(TRACE, "Enter\n");
1032
1033
	vif = container_of(request->wdev, struct brcmf_cfg80211_vif, wdev);
	if (!check_vif_up(vif))
1034
1035
		return -EIO;

1036
	err = brcmf_cfg80211_escan(wiphy, vif, request, NULL);
Hante Meuleman's avatar
Hante Meuleman committed
1037

1038
	if (err)
1039
		brcmf_err("scan error (%d)\n", err);
1040

1041
	brcmf_dbg(TRACE, "Exit\n");
1042
1043
1044
1045
1046
1047
1048
	return err;
}

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

1049
1050
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "rtsthresh",
				      rts_threshold);
1051
	if (err)
1052
		brcmf_err("Error (%d)\n", err);
1053
1054
1055
1056
1057
1058
1059
1060

	return err;
}

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

1061
1062
	err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "fragthresh",
				      frag_threshold);
1063
	if (err)
1064
		brcmf_err("Error (%d)\n", err);
1065
1066
1067
1068
1069
1070
1071

	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
1072
	u32 cmd = (l ? BRCMF_C_SET_LRL : BRCMF_C_SET_SRL);
1073

1074
	err = brcmf_fil_cmd_int_set(netdev_priv(ndev), cmd, retry);
1075
	if (err) {
1076
		brcmf_err("cmd (%d) , error (%d)\n", cmd, err);
1077
1078
1079
1080
1081
1082
1083
		return err;
	}
	return err;
}

static s32 brcmf_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
1084
1085
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct net_device *ndev = cfg_to_ndev(cfg);
1086
	struct brcmf_if *ifp = netdev_priv(ndev);
1087
1088
	s32 err = 0;

1089
	brcmf_dbg(TRACE, "Enter\n");
1090
	if (!check_vif_up(ifp->vif))
1091
1092
1093
		return -EIO;

	if (changed & WIPHY_PARAM_RTS_THRESHOLD &&
1094
1095
1096
	    (cfg->conf->rts_threshold != wiphy->rts_threshold)) {
		cfg->conf->rts_threshold = wiphy->rts_threshold;
		err = brcmf_set_rts(ndev, cfg->conf->rts_threshold);
1097
1098
1099
1100
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD &&
1101
1102
1103
	    (cfg->conf->frag_threshold != wiphy->frag_threshold)) {
		cfg->conf->frag_threshold = wiphy->frag_threshold;
		err = brcmf_set_frag(ndev, cfg->conf->frag_threshold);
1104
1105
1106
1107
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_LONG
1108
1109
1110
	    && (cfg->conf->retry_long != wiphy->retry_long)) {
		cfg->conf->retry_long = wiphy->retry_long;
		err = brcmf_set_retry(ndev, cfg->conf->retry_long, true);
1111
1112
1113
1114
		if (!err)
			goto done;
	}
	if (changed & WIPHY_PARAM_RETRY_SHORT
1115
1116
1117
	    && (cfg->conf->retry_short != wiphy->retry_short)) {
		cfg->conf->retry_short = wiphy->retry_short;
		err = brcmf_set_retry(ndev, cfg->conf->retry_short, false);
1118
1119
1120
1121
1122
		if (!err)
			goto done;
	}

done:
1123
	brcmf_dbg(TRACE, "Exit\n");
1124
1125
1126
1127
1128
1129
1130
1131
	return err;
}

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

1132
static void brcmf_link_down(struct brcmf_cfg80211_vif *vif)
1133
{
1134
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
1135
1136
	s32 err = 0;

1137
	brcmf_dbg(TRACE, "Enter\n");
1138

1139
	if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
1140
		brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n ");
1141
		err = brcmf_fil_cmd_data_set(vif->ifp,
1142
					     BRCMF_C_DISASSOC, NULL, 0);
1143
		if (err) {
1144
			brcmf_err("WLC_DISASSOC failed (%d)\n", err);
1145
		}
1146
		clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state);
1147
1148
		cfg80211_disconnected(vif->wdev.netdev, 0, NULL, 0, GFP_KERNEL);

1149
	}
1150
	clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
1151
1152
	clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
	brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
1153
	brcmf_dbg(TRACE, "Exit\n");
1154
1155
1156
1157
1158
1159
}

static s32
brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev,
		      struct cfg80211_ibss_params *params)
{
1160
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
1161
1162
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
1163
1164
1165
1166
1167
	struct brcmf_join_params join_params;
	size_t join_params_size = 0;
	s32 err = 0;
	s32 wsec = 0;
	s32 bcnprd;
1168
	u16 chanspec;
1169

1170
	brcmf_dbg(TRACE, "Enter\n");
1171
	if (!check_vif_up(ifp->vif))
1172
1173
1174
		return -EIO;

	if (params->ssid)
1175
		brcmf_dbg(CONN, "SSID: %s\n", params->ssid);
1176
	else {
1177
		brcmf_dbg(CONN, "SSID: NULL, Not supported\n");
1178
1179
1180
		return -EOPNOTSUPP;
	}

1181
	set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
1182
1183

	if (params->bssid)
1184
		brcmf_dbg(CONN, "BSSID: %pM\n", params->bssid);
1185
	else
1186
		brcmf_dbg(CONN, "No BSSID specified\n");
1187

1188
	if (params->chandef.chan)
1189
1190
		brcmf_dbg(CONN, "channel: %d\n",
			  params->chandef.chan->center_freq);
1191
	else
1192
		brcmf_dbg(CONN, "no channel specified\n");
1193
1194

	if (params->channel_fixed)
1195
		brcmf_dbg(CONN, "fixed channel required\n");
1196
	else
1197
		brcmf_dbg(CONN, "no fixed channel required\n");
1198
1199

	if (params->ie && params->ie_len)
1200
		brcmf_dbg(CONN, "ie len: %d\n", params->ie_len);
1201
	else
1202
		brcmf_dbg(CONN, "no ie specified\n");
1203
1204

	if (params->beacon_interval)
1205
1206
		brcmf_dbg(CONN, "beacon interval: %d\n",
			  params->beacon_interval);
1207
	else
1208
		brcmf_dbg(CONN, "no beacon interval specified\n");
1209
1210

	if (params->basic_rates)
1211
		brcmf_dbg(CONN, "basic rates: %08X\n", params->basic_rates);
1212
	else
1213
		brcmf_dbg(CONN, "no basic rates specified\n");
1214
1215

	if (params->privacy)
1216
		brcmf_dbg(CONN, "privacy required\n");
1217
	else
1218
		brcmf_dbg(CONN, "no privacy required\n");
1219
1220
1221
1222
1223

	/* Configure Privacy for starter */
	if (params->privacy)
		wsec |= WEP_ENABLED;

1224
	err = brcmf_fil_iovar_int_set(ifp, "wsec", wsec);
1225
	if (err) {
1226
		brcmf_err("wsec failed (%d)\n", err);
1227
1228
1229
1230
1231
1232
1233
1234
1235
		goto done;
	}

	/* Configure Beacon Interval for starter */
	if (params->beacon_interval)
		bcnprd = params->beacon_interval;
	else
		bcnprd = 100;

Hante Meuleman's avatar
Hante Meuleman committed
1236
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, bcnprd);
1237
	if (err) {
1238
		brcmf_err("WLC_SET_BCNPRD failed (%d)\n", err);