summaryrefslogtreecommitdiff
path: root/drivers/staging/wlan-ng/cfg80211.c
blob: b7b56d8406d1c60c8b6a617f81dc8ac0362f421e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
// SPDX-License-Identifier: GPL-2.0
/* cfg80211 Interface for prism2_usb module */
#include "hfa384x.h"
#include "prism2mgmt.h"

/* Prism2 channel/frequency/bitrate declarations */
static const struct ieee80211_channel prism2_channels[] = {
	{ .center_freq = 2412 },
	{ .center_freq = 2417 },
	{ .center_freq = 2422 },
	{ .center_freq = 2427 },
	{ .center_freq = 2432 },
	{ .center_freq = 2437 },
	{ .center_freq = 2442 },
	{ .center_freq = 2447 },
	{ .center_freq = 2452 },
	{ .center_freq = 2457 },
	{ .center_freq = 2462 },
	{ .center_freq = 2467 },
	{ .center_freq = 2472 },
	{ .center_freq = 2484 },
};

static const struct ieee80211_rate prism2_rates[] = {
	{ .bitrate = 10 },
	{ .bitrate = 20 },
	{ .bitrate = 55 },
	{ .bitrate = 110 }
};

#define PRISM2_NUM_CIPHER_SUITES 2
static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
	WLAN_CIPHER_SUITE_WEP40,
	WLAN_CIPHER_SUITE_WEP104
};

/* prism2 device private data */
struct prism2_wiphy_private {
	struct wlandevice *wlandev;

	struct ieee80211_supported_band band;
	struct ieee80211_channel channels[ARRAY_SIZE(prism2_channels)];
	struct ieee80211_rate rates[ARRAY_SIZE(prism2_rates)];

	struct cfg80211_scan_request *scan_request;
};

static const void * const prism2_wiphy_privid = &prism2_wiphy_privid;

/* Helper Functions */
static int prism2_result2err(int prism2_result)
{
	int err = 0;

	switch (prism2_result) {
	case P80211ENUM_resultcode_invalid_parameters:
		err = -EINVAL;
		break;
	case P80211ENUM_resultcode_implementation_failure:
		err = -EIO;
		break;
	case P80211ENUM_resultcode_not_supported:
		err = -EOPNOTSUPP;
		break;
	default:
		err = 0;
		break;
	}

	return err;
}

static int prism2_domibset_uint32(struct wlandevice *wlandev,
				  u32 did, u32 data)
{
	struct p80211msg_dot11req_mibset msg;
	struct p80211item_uint32 *mibitem =
			(struct p80211item_uint32 *)&msg.mibattribute.data;

	msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
	mibitem->did = did;
	mibitem->data = data;

	return p80211req_dorequest(wlandev, (u8 *)&msg);
}

static int prism2_domibset_pstr32(struct wlandevice *wlandev,
				  u32 did, u8 len, const u8 *data)
{
	struct p80211msg_dot11req_mibset msg;
	struct p80211item_pstr32 *mibitem =
			(struct p80211item_pstr32 *)&msg.mibattribute.data;

	msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
	mibitem->did = did;
	mibitem->data.len = len;
	memcpy(mibitem->data.data, data, len);

	return p80211req_dorequest(wlandev, (u8 *)&msg);
}

/* The interface functions, called by the cfg80211 layer */
static int prism2_change_virtual_intf(struct wiphy *wiphy,
				      struct net_device *dev,
				      enum nl80211_iftype type,
				      struct vif_params *params)
{
	struct wlandevice *wlandev = dev->ml_priv;
	u32 data;
	int result;
	int err = 0;

	switch (type) {
	case NL80211_IFTYPE_ADHOC:
		if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
			goto exit;
		wlandev->macmode = WLAN_MACMODE_IBSS_STA;
		data = 0;
		break;
	case NL80211_IFTYPE_STATION:
		if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
			goto exit;
		wlandev->macmode = WLAN_MACMODE_ESS_STA;
		data = 1;
		break;
	default:
		netdev_warn(dev, "Operation mode: %d not support\n", type);
		return -EOPNOTSUPP;
	}

	/* Set Operation mode to the PORT TYPE RID */
	result = prism2_domibset_uint32(wlandev,
					DIDMIB_P2_STATIC_CNFPORTTYPE,
					data);

	if (result)
		err = -EFAULT;

	dev->ieee80211_ptr->iftype = type;

exit:
	return err;
}

static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
			  u8 key_index, bool pairwise, const u8 *mac_addr,
			  struct key_params *params)
{
	struct wlandevice *wlandev = dev->ml_priv;
	u32 did;

	if (key_index >= NUM_WEPKEYS)
		return -EINVAL;

	if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
	    params->cipher != WLAN_CIPHER_SUITE_WEP104) {
		pr_debug("Unsupported cipher suite\n");
		return -EFAULT;
	}

	if (prism2_domibset_uint32(wlandev,
				   DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
				   key_index))
		return -EFAULT;

	/* send key to driver */
	did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);

	if (prism2_domibset_pstr32(wlandev, did, params->key_len, params->key))
		return -EFAULT;
	return 0;
}

static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
			  u8 key_index, bool pairwise,
			  const u8 *mac_addr, void *cookie,
			  void (*callback)(void *cookie, struct key_params*))
{
	struct wlandevice *wlandev = dev->ml_priv;
	struct key_params params;
	int len;

	if (key_index >= NUM_WEPKEYS)
		return -EINVAL;

	len = wlandev->wep_keylens[key_index];
	memset(&params, 0, sizeof(params));

	if (len == 13)
		params.cipher = WLAN_CIPHER_SUITE_WEP104;
	else if (len == 5)
		params.cipher = WLAN_CIPHER_SUITE_WEP104;
	else
		return -ENOENT;
	params.key_len = len;
	params.key = wlandev->wep_keys[key_index];
	params.seq_len = 0;

	callback(cookie, &params);

	return 0;
}

static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
			  u8 key_index, bool pairwise, const u8 *mac_addr)
{
	struct wlandevice *wlandev = dev->ml_priv;
	u32 did;
	int err = 0;
	int result = 0;

	/* There is no direct way in the hardware (AFAIK) of removing
	 * a key, so we will cheat by setting the key to a bogus value
	 */

	if (key_index >= NUM_WEPKEYS)
		return -EINVAL;

	/* send key to driver */
	did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);
	result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");

	if (result)
		err = -EFAULT;

	return err;
}

static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
				  u8 key_index, bool unicast, bool multicast)
{
	struct wlandevice *wlandev = dev->ml_priv;

	return  prism2_domibset_uint32(wlandev,
				       DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
				       key_index);
}

static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
			      const u8 *mac, struct station_info *sinfo)
{
	struct wlandevice *wlandev = dev->ml_priv;
	struct p80211msg_lnxreq_commsquality quality;
	int result;

	memset(sinfo, 0, sizeof(*sinfo));

	if (!wlandev || (wlandev->msdstate != WLAN_MSD_RUNNING))
		return -EOPNOTSUPP;

	/* build request message */
	quality.msgcode = DIDMSG_LNXREQ_COMMSQUALITY;
	quality.dbm.data = P80211ENUM_truth_true;
	quality.dbm.status = P80211ENUM_msgitem_status_data_ok;

	/* send message to nsd */
	if (!wlandev->mlmerequest)
		return -EOPNOTSUPP;

	result = wlandev->mlmerequest(wlandev, (struct p80211msg *)&quality);

	if (result == 0) {
		sinfo->txrate.legacy = quality.txrate.data;
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
		sinfo->signal = quality.level.data;
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
	}

	return result;
}

static int prism2_scan(struct wiphy *wiphy,
		       struct cfg80211_scan_request *request)
{
	struct net_device *dev;
	struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
	struct wlandevice *wlandev;
	struct p80211msg_dot11req_scan msg1;
	struct p80211msg_dot11req_scan_results *msg2;
	struct cfg80211_bss *bss;
	struct cfg80211_scan_info info = {};

	int result;
	int err = 0;
	int numbss = 0;
	int i = 0;
	u8 ie_buf[46];
	int ie_len;

	if (!request)
		return -EINVAL;

	dev = request->wdev->netdev;
	wlandev = dev->ml_priv;

	if (priv->scan_request && priv->scan_request != request)
		return -EBUSY;

	if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
		netdev_err(dev, "Can't scan in AP mode\n");
		return -EOPNOTSUPP;
	}

	msg2 = kzalloc(sizeof(*msg2), GFP_KERNEL);
	if (!msg2)
		return -ENOMEM;

	priv->scan_request = request;

	memset(&msg1, 0x00, sizeof(msg1));
	msg1.msgcode = DIDMSG_DOT11REQ_SCAN;
	msg1.bsstype.data = P80211ENUM_bsstype_any;

	memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
	msg1.bssid.data.len = 6;

	if (request->n_ssids > 0) {
		msg1.scantype.data = P80211ENUM_scantype_active;
		msg1.ssid.data.len = request->ssids->ssid_len;
		memcpy(msg1.ssid.data.data,
		       request->ssids->ssid, request->ssids->ssid_len);
	} else {
		msg1.scantype.data = 0;
	}
	msg1.probedelay.data = 0;

	for (i = 0;
		(i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
		i++)
		msg1.channellist.data.data[i] =
			ieee80211_frequency_to_channel(request->channels[i]->center_freq);
	msg1.channellist.data.len = request->n_channels;

	msg1.maxchanneltime.data = 250;
	msg1.minchanneltime.data = 200;

	result = p80211req_dorequest(wlandev, (u8 *)&msg1);
	if (result) {
		err = prism2_result2err(msg1.resultcode.data);
		goto exit;
	}
	/* Now retrieve scan results */
	numbss = msg1.numbss.data;

	for (i = 0; i < numbss; i++) {
		int freq;

		msg2->msgcode = DIDMSG_DOT11REQ_SCAN_RESULTS;
		msg2->bssindex.data = i;

		result = p80211req_dorequest(wlandev, (u8 *)&msg2);
		if ((result != 0) ||
		    (msg2->resultcode.data != P80211ENUM_resultcode_success)) {
			break;
		}

		ie_buf[0] = WLAN_EID_SSID;
		ie_buf[1] = msg2->ssid.data.len;
		ie_len = ie_buf[1] + 2;
		memcpy(&ie_buf[2], &msg2->ssid.data.data, msg2->ssid.data.len);
		freq = ieee80211_channel_to_frequency(msg2->dschannel.data,
						      NL80211_BAND_2GHZ);
		bss = cfg80211_inform_bss(wiphy,
					  ieee80211_get_channel(wiphy, freq),
					  CFG80211_BSS_FTYPE_UNKNOWN,
					  (const u8 *)&msg2->bssid.data.data,
					  msg2->timestamp.data, msg2->capinfo.data,
					  msg2->beaconperiod.data,
					  ie_buf,
					  ie_len,
					  (msg2->signal.data - 65536) * 100, /* Conversion to signed type */
					  GFP_KERNEL);

		if (!bss) {
			err = -ENOMEM;
			goto exit;
		}

		cfg80211_put_bss(wiphy, bss);
	}

	if (result)
		err = prism2_result2err(msg2->resultcode.data);

exit:
	info.aborted = !!(err);
	cfg80211_scan_done(request, &info);
	priv->scan_request = NULL;
	kfree(msg2);
	return err;
}

static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
	struct wlandevice *wlandev = priv->wlandev;
	u32 data;
	int result;
	int err = 0;

	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
		if (wiphy->rts_threshold == -1)
			data = 2347;
		else
			data = wiphy->rts_threshold;

		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11MAC_OPERATIONTABLE_RTSTHRESHOLD,
						data);
		if (result) {
			err = -EFAULT;
			goto exit;
		}
	}

	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		if (wiphy->frag_threshold == -1)
			data = 2346;
		else
			data = wiphy->frag_threshold;

		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11MAC_OPERATIONTABLE_FRAGMENTATIONTHRESHOLD,
						data);
		if (result) {
			err = -EFAULT;
			goto exit;
		}
	}

exit:
	return err;
}

static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_connect_params *sme)
{
	struct wlandevice *wlandev = dev->ml_priv;
	struct ieee80211_channel *channel = sme->channel;
	struct p80211msg_lnxreq_autojoin msg_join;
	u32 did;
	int length = sme->ssid_len;
	int chan = -1;
	int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
	    (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
	int result;
	int err = 0;

	/* Set the channel */
	if (channel) {
		chan = ieee80211_frequency_to_channel(channel->center_freq);
		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11PHY_DSSSTABLE_CURRENTCHANNEL,
						chan);
		if (result)
			goto exit;
	}

	/* Set the authorization */
	if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
	    ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
		msg_join.authtype.data = P80211ENUM_authalg_opensystem;
	else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
		 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
		msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
	else
		netdev_warn(dev,
			    "Unhandled authorisation type for connect (%d)\n",
			    sme->auth_type);

	/* Set the encryption - we only support wep */
	if (is_wep) {
		if (sme->key) {
			if (sme->key_idx >= NUM_WEPKEYS)
				return -EINVAL;

			result = prism2_domibset_uint32(wlandev,
							DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
				sme->key_idx);
			if (result)
				goto exit;

			/* send key to driver */
			did = didmib_dot11smt_wepdefaultkeystable_key(sme->key_idx + 1);
			result = prism2_domibset_pstr32(wlandev,
							did, sme->key_len,
							(u8 *)sme->key);
			if (result)
				goto exit;
		}

		/* Assume we should set privacy invoked and exclude unencrypted
		 * We could possible use sme->privacy here, but the assumption
		 * seems reasonable anyways
		 */
		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
						P80211ENUM_truth_true);
		if (result)
			goto exit;

		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
						P80211ENUM_truth_true);
		if (result)
			goto exit;

	} else {
		/* Assume we should unset privacy invoked
		 * and exclude unencrypted
		 */
		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
						P80211ENUM_truth_false);
		if (result)
			goto exit;

		result = prism2_domibset_uint32(wlandev,
						DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
						P80211ENUM_truth_false);
		if (result)
			goto exit;
	}

	/* Now do the actual join. Note there is no way that I can
	 * see to request a specific bssid
	 */
	msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;

	memcpy(msg_join.ssid.data.data, sme->ssid, length);
	msg_join.ssid.data.len = length;

	result = p80211req_dorequest(wlandev, (u8 *)&msg_join);

exit:
	if (result)
		err = -EFAULT;

	return err;
}

static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
			     u16 reason_code)
{
	struct wlandevice *wlandev = dev->ml_priv;
	struct p80211msg_lnxreq_autojoin msg_join;
	int result;
	int err = 0;

	/* Do a join, with a bogus ssid. Thats the only way I can think of */
	msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;

	memcpy(msg_join.ssid.data.data, "---", 3);
	msg_join.ssid.data.len = 3;

	result = p80211req_dorequest(wlandev, (u8 *)&msg_join);

	if (result)
		err = -EFAULT;

	return err;
}

static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			    struct cfg80211_ibss_params *params)
{
	return -EOPNOTSUPP;
}

static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
	return -EOPNOTSUPP;
}

static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
			       enum nl80211_tx_power_setting type, int mbm)
{
	struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
	struct wlandevice *wlandev = priv->wlandev;
	u32 data;
	int result;
	int err = 0;

	if (type == NL80211_TX_POWER_AUTOMATIC)
		data = 30;
	else
		data = MBM_TO_DBM(mbm);

	result = prism2_domibset_uint32(wlandev,
					DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL,
		data);

	if (result) {
		err = -EFAULT;
		goto exit;
	}

exit:
	return err;
}

static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
			       int *dbm)
{
	struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
	struct wlandevice *wlandev = priv->wlandev;
	struct p80211msg_dot11req_mibget msg;
	struct p80211item_uint32 *mibitem;
	int result;
	int err = 0;

	mibitem = (struct p80211item_uint32 *)&msg.mibattribute.data;
	msg.msgcode = DIDMSG_DOT11REQ_MIBGET;
	mibitem->did = DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL;

	result = p80211req_dorequest(wlandev, (u8 *)&msg);

	if (result) {
		err = -EFAULT;
		goto exit;
	}

	*dbm = mibitem->data;

exit:
	return err;
}

/* Interface callback functions, passing data back up to the cfg80211 layer */
void prism2_connect_result(struct wlandevice *wlandev, u8 failed)
{
	u16 status = failed ?
		     WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;

	cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
				NULL, 0, NULL, 0, status, GFP_KERNEL);
}

void prism2_disconnected(struct wlandevice *wlandev)
{
	cfg80211_disconnected(wlandev->netdev, 0, NULL,
			      0, false, GFP_KERNEL);
}

void prism2_roamed(struct wlandevice *wlandev)
{
	struct cfg80211_roam_info roam_info = {
		.links[0].bssid = wlandev->bssid,
	};

	cfg80211_roamed(wlandev->netdev, &roam_info, GFP_KERNEL);
}

/* Structures for declaring wiphy interface */
static const struct cfg80211_ops prism2_usb_cfg_ops = {
	.change_virtual_intf = prism2_change_virtual_intf,
	.add_key = prism2_add_key,
	.get_key = prism2_get_key,
	.del_key = prism2_del_key,
	.set_default_key = prism2_set_default_key,
	.get_station = prism2_get_station,
	.scan = prism2_scan,
	.set_wiphy_params = prism2_set_wiphy_params,
	.connect = prism2_connect,
	.disconnect = prism2_disconnect,
	.join_ibss = prism2_join_ibss,
	.leave_ibss = prism2_leave_ibss,
	.set_tx_power = prism2_set_tx_power,
	.get_tx_power = prism2_get_tx_power,
};

/* Functions to create/free wiphy interface */
static struct wiphy *wlan_create_wiphy(struct device *dev,
				       struct wlandevice *wlandev)
{
	struct wiphy *wiphy;
	struct prism2_wiphy_private *priv;

	wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
	if (!wiphy)
		return NULL;

	priv = wiphy_priv(wiphy);
	priv->wlandev = wlandev;
	memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
	memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
	priv->band.channels = priv->channels;
	priv->band.n_channels = ARRAY_SIZE(prism2_channels);
	priv->band.bitrates = priv->rates;
	priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
	priv->band.band = NL80211_BAND_2GHZ;
	priv->band.ht_cap.ht_supported = false;
	wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;

	set_wiphy_dev(wiphy, dev);
	wiphy->privid = prism2_wiphy_privid;
	wiphy->max_scan_ssids = 1;
	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
				 | BIT(NL80211_IFTYPE_ADHOC);
	wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
	wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
	wiphy->cipher_suites = prism2_cipher_suites;

	if (wiphy_register(wiphy) < 0) {
		wiphy_free(wiphy);
		return NULL;
	}

	return wiphy;
}

static void wlan_free_wiphy(struct wiphy *wiphy)
{
	wiphy_unregister(wiphy);
	wiphy_free(wiphy);
}