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cfg80211/nl80211: separate unicast/multicast default TX keys
[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / drivers / net / wireless / libertas / cfg.c
1 /*
2 * Implement cfg80211 ("iw") support.
3 *
4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
5 * Holger Schurig <hs4233@mail.mn-solutions.de>
6 *
7 */
8
9 #include <linux/sched.h>
10 #include <linux/wait.h>
11 #include <linux/slab.h>
12 #include <linux/ieee80211.h>
13 #include <net/cfg80211.h>
14 #include <asm/unaligned.h>
15
16 #include "decl.h"
17 #include "cfg.h"
18 #include "cmd.h"
19
20
21 #define CHAN2G(_channel, _freq, _flags) { \
22 .band = IEEE80211_BAND_2GHZ, \
23 .center_freq = (_freq), \
24 .hw_value = (_channel), \
25 .flags = (_flags), \
26 .max_antenna_gain = 0, \
27 .max_power = 30, \
28 }
29
30 static struct ieee80211_channel lbs_2ghz_channels[] = {
31 CHAN2G(1, 2412, 0),
32 CHAN2G(2, 2417, 0),
33 CHAN2G(3, 2422, 0),
34 CHAN2G(4, 2427, 0),
35 CHAN2G(5, 2432, 0),
36 CHAN2G(6, 2437, 0),
37 CHAN2G(7, 2442, 0),
38 CHAN2G(8, 2447, 0),
39 CHAN2G(9, 2452, 0),
40 CHAN2G(10, 2457, 0),
41 CHAN2G(11, 2462, 0),
42 CHAN2G(12, 2467, 0),
43 CHAN2G(13, 2472, 0),
44 CHAN2G(14, 2484, 0),
45 };
46
47 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
48 .bitrate = (_rate), \
49 .hw_value = (_hw_value), \
50 .flags = (_flags), \
51 }
52
53
54 /* Table 6 in section 3.2.1.1 */
55 static struct ieee80211_rate lbs_rates[] = {
56 RATETAB_ENT(10, 0, 0),
57 RATETAB_ENT(20, 1, 0),
58 RATETAB_ENT(55, 2, 0),
59 RATETAB_ENT(110, 3, 0),
60 RATETAB_ENT(60, 9, 0),
61 RATETAB_ENT(90, 6, 0),
62 RATETAB_ENT(120, 7, 0),
63 RATETAB_ENT(180, 8, 0),
64 RATETAB_ENT(240, 9, 0),
65 RATETAB_ENT(360, 10, 0),
66 RATETAB_ENT(480, 11, 0),
67 RATETAB_ENT(540, 12, 0),
68 };
69
70 static struct ieee80211_supported_band lbs_band_2ghz = {
71 .channels = lbs_2ghz_channels,
72 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
73 .bitrates = lbs_rates,
74 .n_bitrates = ARRAY_SIZE(lbs_rates),
75 };
76
77
78 static const u32 cipher_suites[] = {
79 WLAN_CIPHER_SUITE_WEP40,
80 WLAN_CIPHER_SUITE_WEP104,
81 WLAN_CIPHER_SUITE_TKIP,
82 WLAN_CIPHER_SUITE_CCMP,
83 };
84
85 /* Time to stay on the channel */
86 #define LBS_DWELL_PASSIVE 100
87 #define LBS_DWELL_ACTIVE 40
88
89
90 /***************************************************************************
91 * Misc utility functions
92 *
93 * TLVs are Marvell specific. They are very similar to IEs, they have the
94 * same structure: type, length, data*. The only difference: for IEs, the
95 * type and length are u8, but for TLVs they're __le16.
96 */
97
98 /*
99 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
100 * in the firmware spec
101 */
102 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
103 {
104 int ret = -ENOTSUPP;
105
106 switch (auth_type) {
107 case NL80211_AUTHTYPE_OPEN_SYSTEM:
108 case NL80211_AUTHTYPE_SHARED_KEY:
109 ret = auth_type;
110 break;
111 case NL80211_AUTHTYPE_AUTOMATIC:
112 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
113 break;
114 case NL80211_AUTHTYPE_NETWORK_EAP:
115 ret = 0x80;
116 break;
117 default:
118 /* silence compiler */
119 break;
120 }
121 return ret;
122 }
123
124
125 /* Various firmware commands need the list of supported rates, but with
126 the hight-bit set for basic rates */
127 static int lbs_add_rates(u8 *rates)
128 {
129 size_t i;
130
131 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
132 u8 rate = lbs_rates[i].bitrate / 5;
133 if (rate == 0x02 || rate == 0x04 ||
134 rate == 0x0b || rate == 0x16)
135 rate |= 0x80;
136 rates[i] = rate;
137 }
138 return ARRAY_SIZE(lbs_rates);
139 }
140
141
142 /***************************************************************************
143 * TLV utility functions
144 *
145 * TLVs are Marvell specific. They are very similar to IEs, they have the
146 * same structure: type, length, data*. The only difference: for IEs, the
147 * type and length are u8, but for TLVs they're __le16.
148 */
149
150
151 /*
152 * Add ssid TLV
153 */
154 #define LBS_MAX_SSID_TLV_SIZE \
155 (sizeof(struct mrvl_ie_header) \
156 + IEEE80211_MAX_SSID_LEN)
157
158 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
159 {
160 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
161
162 /*
163 * TLV-ID SSID 00 00
164 * length 06 00
165 * ssid 4d 4e 54 45 53 54
166 */
167 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
168 ssid_tlv->header.len = cpu_to_le16(ssid_len);
169 memcpy(ssid_tlv->ssid, ssid, ssid_len);
170 return sizeof(ssid_tlv->header) + ssid_len;
171 }
172
173
174 /*
175 * Add channel list TLV (section 8.4.2)
176 *
177 * Actual channel data comes from priv->wdev->wiphy->channels.
178 */
179 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
180 (sizeof(struct mrvl_ie_header) \
181 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
182
183 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
184 int last_channel, int active_scan)
185 {
186 int chanscanparamsize = sizeof(struct chanscanparamset) *
187 (last_channel - priv->scan_channel);
188
189 struct mrvl_ie_header *header = (void *) tlv;
190
191 /*
192 * TLV-ID CHANLIST 01 01
193 * length 0e 00
194 * channel 00 01 00 00 00 64 00
195 * radio type 00
196 * channel 01
197 * scan type 00
198 * min scan time 00 00
199 * max scan time 64 00
200 * channel 2 00 02 00 00 00 64 00
201 *
202 */
203
204 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
205 header->len = cpu_to_le16(chanscanparamsize);
206 tlv += sizeof(struct mrvl_ie_header);
207
208 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
209 last_channel); */
210 memset(tlv, 0, chanscanparamsize);
211
212 while (priv->scan_channel < last_channel) {
213 struct chanscanparamset *param = (void *) tlv;
214
215 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
216 param->channumber =
217 priv->scan_req->channels[priv->scan_channel]->hw_value;
218 if (active_scan) {
219 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
220 } else {
221 param->chanscanmode.passivescan = 1;
222 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
223 }
224 tlv += sizeof(struct chanscanparamset);
225 priv->scan_channel++;
226 }
227 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
228 }
229
230
231 /*
232 * Add rates TLV
233 *
234 * The rates are in lbs_bg_rates[], but for the 802.11b
235 * rates the high bit is set. We add this TLV only because
236 * there's a firmware which otherwise doesn't report all
237 * APs in range.
238 */
239 #define LBS_MAX_RATES_TLV_SIZE \
240 (sizeof(struct mrvl_ie_header) \
241 + (ARRAY_SIZE(lbs_rates)))
242
243 /* Adds a TLV with all rates the hardware supports */
244 static int lbs_add_supported_rates_tlv(u8 *tlv)
245 {
246 size_t i;
247 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
248
249 /*
250 * TLV-ID RATES 01 00
251 * length 0e 00
252 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
253 */
254 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
255 tlv += sizeof(rate_tlv->header);
256 i = lbs_add_rates(tlv);
257 tlv += i;
258 rate_tlv->header.len = cpu_to_le16(i);
259 return sizeof(rate_tlv->header) + i;
260 }
261
262 /* Add common rates from a TLV and return the new end of the TLV */
263 static u8 *
264 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
265 {
266 int hw, ap, ap_max = ie[1];
267 u8 hw_rate;
268
269 /* Advance past IE header */
270 ie += 2;
271
272 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
273
274 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
275 hw_rate = lbs_rates[hw].bitrate / 5;
276 for (ap = 0; ap < ap_max; ap++) {
277 if (hw_rate == (ie[ap] & 0x7f)) {
278 *tlv++ = ie[ap];
279 *nrates = *nrates + 1;
280 }
281 }
282 }
283 return tlv;
284 }
285
286 /*
287 * Adds a TLV with all rates the hardware *and* BSS supports.
288 */
289 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
290 {
291 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
292 const u8 *rates_eid, *ext_rates_eid;
293 int n = 0;
294
295 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
296 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
297
298 /*
299 * 01 00 TLV_TYPE_RATES
300 * 04 00 len
301 * 82 84 8b 96 rates
302 */
303 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
304 tlv += sizeof(rate_tlv->header);
305
306 /* Add basic rates */
307 if (rates_eid) {
308 tlv = add_ie_rates(tlv, rates_eid, &n);
309
310 /* Add extended rates, if any */
311 if (ext_rates_eid)
312 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
313 } else {
314 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
315 /* Fallback: add basic 802.11b rates */
316 *tlv++ = 0x82;
317 *tlv++ = 0x84;
318 *tlv++ = 0x8b;
319 *tlv++ = 0x96;
320 n = 4;
321 }
322
323 rate_tlv->header.len = cpu_to_le16(n);
324 return sizeof(rate_tlv->header) + n;
325 }
326
327
328 /*
329 * Add auth type TLV.
330 *
331 * This is only needed for newer firmware (V9 and up).
332 */
333 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
334 sizeof(struct mrvl_ie_auth_type)
335
336 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
337 {
338 struct mrvl_ie_auth_type *auth = (void *) tlv;
339
340 /*
341 * 1f 01 TLV_TYPE_AUTH_TYPE
342 * 01 00 len
343 * 01 auth type
344 */
345 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
346 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
347 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
348 return sizeof(*auth);
349 }
350
351
352 /*
353 * Add channel (phy ds) TLV
354 */
355 #define LBS_MAX_CHANNEL_TLV_SIZE \
356 sizeof(struct mrvl_ie_header)
357
358 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
359 {
360 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
361
362 /*
363 * 03 00 TLV_TYPE_PHY_DS
364 * 01 00 len
365 * 06 channel
366 */
367 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
368 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
369 ds->channel = channel;
370 return sizeof(*ds);
371 }
372
373
374 /*
375 * Add (empty) CF param TLV of the form:
376 */
377 #define LBS_MAX_CF_PARAM_TLV_SIZE \
378 sizeof(struct mrvl_ie_header)
379
380 static int lbs_add_cf_param_tlv(u8 *tlv)
381 {
382 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
383
384 /*
385 * 04 00 TLV_TYPE_CF
386 * 06 00 len
387 * 00 cfpcnt
388 * 00 cfpperiod
389 * 00 00 cfpmaxduration
390 * 00 00 cfpdurationremaining
391 */
392 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
393 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
394 return sizeof(*cf);
395 }
396
397 /*
398 * Add WPA TLV
399 */
400 #define LBS_MAX_WPA_TLV_SIZE \
401 (sizeof(struct mrvl_ie_header) \
402 + 128 /* TODO: I guessed the size */)
403
404 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
405 {
406 size_t tlv_len;
407
408 /*
409 * We need just convert an IE to an TLV. IEs use u8 for the header,
410 * u8 type
411 * u8 len
412 * u8[] data
413 * but TLVs use __le16 instead:
414 * __le16 type
415 * __le16 len
416 * u8[] data
417 */
418 *tlv++ = *ie++;
419 *tlv++ = 0;
420 tlv_len = *tlv++ = *ie++;
421 *tlv++ = 0;
422 while (tlv_len--)
423 *tlv++ = *ie++;
424 /* the TLV is two bytes larger than the IE */
425 return ie_len + 2;
426 }
427
428 /***************************************************************************
429 * Set Channel
430 */
431
432 static int lbs_cfg_set_channel(struct wiphy *wiphy,
433 struct net_device *netdev,
434 struct ieee80211_channel *channel,
435 enum nl80211_channel_type channel_type)
436 {
437 struct lbs_private *priv = wiphy_priv(wiphy);
438 int ret = -ENOTSUPP;
439
440 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
441 channel->center_freq, channel_type);
442
443 if (channel_type != NL80211_CHAN_NO_HT)
444 goto out;
445
446 ret = lbs_set_channel(priv, channel->hw_value);
447
448 out:
449 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
450 return ret;
451 }
452
453
454
455 /***************************************************************************
456 * Scanning
457 */
458
459 /*
460 * When scanning, the firmware doesn't send a nul packet with the power-safe
461 * bit to the AP. So we cannot stay away from our current channel too long,
462 * otherwise we loose data. So take a "nap" while scanning every other
463 * while.
464 */
465 #define LBS_SCAN_BEFORE_NAP 4
466
467
468 /*
469 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
470 * which isn't really an RSSI, as it becomes larger when moving away from
471 * the AP. Anyway, we need to convert that into mBm.
472 */
473 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
474 ((-(int)rssi + 3)*100)
475
476 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
477 struct cmd_header *resp)
478 {
479 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
480 int bsssize;
481 const u8 *pos;
482 const u8 *tsfdesc;
483 int tsfsize;
484 int i;
485 int ret = -EILSEQ;
486
487 lbs_deb_enter(LBS_DEB_CFG80211);
488
489 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
490
491 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
492 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
493
494 if (scanresp->nr_sets == 0) {
495 ret = 0;
496 goto done;
497 }
498
499 /*
500 * The general layout of the scan response is described in chapter
501 * 5.7.1. Basically we have a common part, then any number of BSS
502 * descriptor sections. Finally we have section with the same number
503 * of TSFs.
504 *
505 * cmd_ds_802_11_scan_rsp
506 * cmd_header
507 * pos_size
508 * nr_sets
509 * bssdesc 1
510 * bssid
511 * rssi
512 * timestamp
513 * intvl
514 * capa
515 * IEs
516 * bssdesc 2
517 * bssdesc n
518 * MrvlIEtypes_TsfFimestamp_t
519 * TSF for BSS 1
520 * TSF for BSS 2
521 * TSF for BSS n
522 */
523
524 pos = scanresp->bssdesc_and_tlvbuffer;
525
526 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
527 scanresp->bssdescriptsize);
528
529 tsfdesc = pos + bsssize;
530 tsfsize = 4 + 8 * scanresp->nr_sets;
531 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
532
533 /* Validity check: we expect a Marvell-Local TLV */
534 i = get_unaligned_le16(tsfdesc);
535 tsfdesc += 2;
536 if (i != TLV_TYPE_TSFTIMESTAMP) {
537 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
538 goto done;
539 }
540
541 /* Validity check: the TLV holds TSF values with 8 bytes each, so
542 * the size in the TLV must match the nr_sets value */
543 i = get_unaligned_le16(tsfdesc);
544 tsfdesc += 2;
545 if (i / 8 != scanresp->nr_sets) {
546 lbs_deb_scan("scan response: invalid number of TSF timestamp "
547 "sets (expected %d got %d)\n", scanresp->nr_sets,
548 i / 8);
549 goto done;
550 }
551
552 for (i = 0; i < scanresp->nr_sets; i++) {
553 const u8 *bssid;
554 const u8 *ie;
555 int left;
556 int ielen;
557 int rssi;
558 u16 intvl;
559 u16 capa;
560 int chan_no = -1;
561 const u8 *ssid = NULL;
562 u8 ssid_len = 0;
563 DECLARE_SSID_BUF(ssid_buf);
564
565 int len = get_unaligned_le16(pos);
566 pos += 2;
567
568 /* BSSID */
569 bssid = pos;
570 pos += ETH_ALEN;
571 /* RSSI */
572 rssi = *pos++;
573 /* Packet time stamp */
574 pos += 8;
575 /* Beacon interval */
576 intvl = get_unaligned_le16(pos);
577 pos += 2;
578 /* Capabilities */
579 capa = get_unaligned_le16(pos);
580 pos += 2;
581
582 /* To find out the channel, we must parse the IEs */
583 ie = pos;
584 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
585 interval, capabilities */
586 ielen = left = len - (6 + 1 + 8 + 2 + 2);
587 while (left >= 2) {
588 u8 id, elen;
589 id = *pos++;
590 elen = *pos++;
591 left -= 2;
592 if (elen > left || elen == 0) {
593 lbs_deb_scan("scan response: invalid IE fmt\n");
594 goto done;
595 }
596
597 if (id == WLAN_EID_DS_PARAMS)
598 chan_no = *pos;
599 if (id == WLAN_EID_SSID) {
600 ssid = pos;
601 ssid_len = elen;
602 }
603 left -= elen;
604 pos += elen;
605 }
606
607 /* No channel, no luck */
608 if (chan_no != -1) {
609 struct wiphy *wiphy = priv->wdev->wiphy;
610 int freq = ieee80211_channel_to_frequency(chan_no);
611 struct ieee80211_channel *channel =
612 ieee80211_get_channel(wiphy, freq);
613
614 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
615 "%d dBm\n",
616 bssid, capa, chan_no,
617 print_ssid(ssid_buf, ssid, ssid_len),
618 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
619
620 if (channel ||
621 !(channel->flags & IEEE80211_CHAN_DISABLED))
622 cfg80211_inform_bss(wiphy, channel,
623 bssid, le64_to_cpu(*(__le64 *)tsfdesc),
624 capa, intvl, ie, ielen,
625 LBS_SCAN_RSSI_TO_MBM(rssi),
626 GFP_KERNEL);
627 } else
628 lbs_deb_scan("scan response: missing BSS channel IE\n");
629
630 tsfdesc += 8;
631 }
632 ret = 0;
633
634 done:
635 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
636 return ret;
637 }
638
639
640 /*
641 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
642 * TLV and a rates TLV. Determine the maximum size of them:
643 */
644 #define LBS_SCAN_MAX_CMD_SIZE \
645 (sizeof(struct cmd_ds_802_11_scan) \
646 + LBS_MAX_SSID_TLV_SIZE \
647 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
648 + LBS_MAX_RATES_TLV_SIZE)
649
650 /*
651 * Assumes priv->scan_req is initialized and valid
652 * Assumes priv->scan_channel is initialized
653 */
654 static void lbs_scan_worker(struct work_struct *work)
655 {
656 struct lbs_private *priv =
657 container_of(work, struct lbs_private, scan_work.work);
658 struct cmd_ds_802_11_scan *scan_cmd;
659 u8 *tlv; /* pointer into our current, growing TLV storage area */
660 int last_channel;
661 int running, carrier;
662
663 lbs_deb_enter(LBS_DEB_SCAN);
664
665 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
666 if (scan_cmd == NULL)
667 goto out_no_scan_cmd;
668
669 /* prepare fixed part of scan command */
670 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
671
672 /* stop network while we're away from our main channel */
673 running = !netif_queue_stopped(priv->dev);
674 carrier = netif_carrier_ok(priv->dev);
675 if (running)
676 netif_stop_queue(priv->dev);
677 if (carrier)
678 netif_carrier_off(priv->dev);
679
680 /* prepare fixed part of scan command */
681 tlv = scan_cmd->tlvbuffer;
682
683 /* add SSID TLV */
684 if (priv->scan_req->n_ssids)
685 tlv += lbs_add_ssid_tlv(tlv,
686 priv->scan_req->ssids[0].ssid,
687 priv->scan_req->ssids[0].ssid_len);
688
689 /* add channel TLVs */
690 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
691 if (last_channel > priv->scan_req->n_channels)
692 last_channel = priv->scan_req->n_channels;
693 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
694 priv->scan_req->n_ssids);
695
696 /* add rates TLV */
697 tlv += lbs_add_supported_rates_tlv(tlv);
698
699 if (priv->scan_channel < priv->scan_req->n_channels) {
700 cancel_delayed_work(&priv->scan_work);
701 if (!priv->stopping)
702 queue_delayed_work(priv->work_thread, &priv->scan_work,
703 msecs_to_jiffies(300));
704 }
705
706 /* This is the final data we are about to send */
707 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
708 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
709 sizeof(*scan_cmd));
710 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
711 tlv - scan_cmd->tlvbuffer);
712
713 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
714 le16_to_cpu(scan_cmd->hdr.size),
715 lbs_ret_scan, 0);
716
717 if (priv->scan_channel >= priv->scan_req->n_channels) {
718 /* Mark scan done */
719 if (priv->internal_scan)
720 kfree(priv->scan_req);
721 else
722 cfg80211_scan_done(priv->scan_req, false);
723
724 priv->scan_req = NULL;
725 priv->last_scan = jiffies;
726 }
727
728 /* Restart network */
729 if (carrier)
730 netif_carrier_on(priv->dev);
731 if (running && !priv->tx_pending_len)
732 netif_wake_queue(priv->dev);
733
734 kfree(scan_cmd);
735
736 /* Wake up anything waiting on scan completion */
737 if (priv->scan_req == NULL) {
738 lbs_deb_scan("scan: waking up waiters\n");
739 wake_up_all(&priv->scan_q);
740 }
741
742 out_no_scan_cmd:
743 lbs_deb_leave(LBS_DEB_SCAN);
744 }
745
746 static void _internal_start_scan(struct lbs_private *priv, bool internal,
747 struct cfg80211_scan_request *request)
748 {
749 lbs_deb_enter(LBS_DEB_CFG80211);
750
751 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
752 request->n_ssids, request->n_channels, request->ie_len);
753
754 priv->scan_channel = 0;
755 queue_delayed_work(priv->work_thread, &priv->scan_work,
756 msecs_to_jiffies(50));
757
758 priv->scan_req = request;
759 priv->internal_scan = internal;
760
761 lbs_deb_leave(LBS_DEB_CFG80211);
762 }
763
764 static int lbs_cfg_scan(struct wiphy *wiphy,
765 struct net_device *dev,
766 struct cfg80211_scan_request *request)
767 {
768 struct lbs_private *priv = wiphy_priv(wiphy);
769 int ret = 0;
770
771 lbs_deb_enter(LBS_DEB_CFG80211);
772
773 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
774 /* old scan request not yet processed */
775 ret = -EAGAIN;
776 goto out;
777 }
778
779 _internal_start_scan(priv, false, request);
780
781 if (priv->surpriseremoved)
782 ret = -EIO;
783
784 out:
785 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
786 return ret;
787 }
788
789
790
791
792 /***************************************************************************
793 * Events
794 */
795
796 void lbs_send_disconnect_notification(struct lbs_private *priv)
797 {
798 lbs_deb_enter(LBS_DEB_CFG80211);
799
800 cfg80211_disconnected(priv->dev,
801 0,
802 NULL, 0,
803 GFP_KERNEL);
804
805 lbs_deb_leave(LBS_DEB_CFG80211);
806 }
807
808 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
809 {
810 lbs_deb_enter(LBS_DEB_CFG80211);
811
812 cfg80211_michael_mic_failure(priv->dev,
813 priv->assoc_bss,
814 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
815 NL80211_KEYTYPE_GROUP :
816 NL80211_KEYTYPE_PAIRWISE,
817 -1,
818 NULL,
819 GFP_KERNEL);
820
821 lbs_deb_leave(LBS_DEB_CFG80211);
822 }
823
824
825
826
827 /***************************************************************************
828 * Connect/disconnect
829 */
830
831
832 /*
833 * This removes all WEP keys
834 */
835 static int lbs_remove_wep_keys(struct lbs_private *priv)
836 {
837 struct cmd_ds_802_11_set_wep cmd;
838 int ret;
839
840 lbs_deb_enter(LBS_DEB_CFG80211);
841
842 memset(&cmd, 0, sizeof(cmd));
843 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
844 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
845 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
846
847 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
848
849 lbs_deb_leave(LBS_DEB_CFG80211);
850 return ret;
851 }
852
853 /*
854 * Set WEP keys
855 */
856 static int lbs_set_wep_keys(struct lbs_private *priv)
857 {
858 struct cmd_ds_802_11_set_wep cmd;
859 int i;
860 int ret;
861
862 lbs_deb_enter(LBS_DEB_CFG80211);
863
864 /*
865 * command 13 00
866 * size 50 00
867 * sequence xx xx
868 * result 00 00
869 * action 02 00 ACT_ADD
870 * transmit key 00 00
871 * type for key 1 01 WEP40
872 * type for key 2 00
873 * type for key 3 00
874 * type for key 4 00
875 * key 1 39 39 39 39 39 00 00 00
876 * 00 00 00 00 00 00 00 00
877 * key 2 00 00 00 00 00 00 00 00
878 * 00 00 00 00 00 00 00 00
879 * key 3 00 00 00 00 00 00 00 00
880 * 00 00 00 00 00 00 00 00
881 * key 4 00 00 00 00 00 00 00 00
882 */
883 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
884 priv->wep_key_len[2] || priv->wep_key_len[3]) {
885 /* Only set wep keys if we have at least one of them */
886 memset(&cmd, 0, sizeof(cmd));
887 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
888 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
889 cmd.action = cpu_to_le16(CMD_ACT_ADD);
890
891 for (i = 0; i < 4; i++) {
892 switch (priv->wep_key_len[i]) {
893 case WLAN_KEY_LEN_WEP40:
894 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
895 break;
896 case WLAN_KEY_LEN_WEP104:
897 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
898 break;
899 default:
900 cmd.keytype[i] = 0;
901 break;
902 }
903 memcpy(cmd.keymaterial[i], priv->wep_key[i],
904 priv->wep_key_len[i]);
905 }
906
907 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
908 } else {
909 /* Otherwise remove all wep keys */
910 ret = lbs_remove_wep_keys(priv);
911 }
912
913 lbs_deb_leave(LBS_DEB_CFG80211);
914 return ret;
915 }
916
917
918 /*
919 * Enable/Disable RSN status
920 */
921 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
922 {
923 struct cmd_ds_802_11_enable_rsn cmd;
924 int ret;
925
926 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
927
928 /*
929 * cmd 2f 00
930 * size 0c 00
931 * sequence xx xx
932 * result 00 00
933 * action 01 00 ACT_SET
934 * enable 01 00
935 */
936 memset(&cmd, 0, sizeof(cmd));
937 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
938 cmd.action = cpu_to_le16(CMD_ACT_SET);
939 cmd.enable = cpu_to_le16(enable);
940
941 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
942
943 lbs_deb_leave(LBS_DEB_CFG80211);
944 return ret;
945 }
946
947
948 /*
949 * Set WPA/WPA key material
950 */
951
952 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
953 * get rid of WEXT, this should go into host.h */
954
955 struct cmd_key_material {
956 struct cmd_header hdr;
957
958 __le16 action;
959 struct MrvlIEtype_keyParamSet param;
960 } __packed;
961
962 static int lbs_set_key_material(struct lbs_private *priv,
963 int key_type,
964 int key_info,
965 u8 *key, u16 key_len)
966 {
967 struct cmd_key_material cmd;
968 int ret;
969
970 lbs_deb_enter(LBS_DEB_CFG80211);
971
972 /*
973 * Example for WPA (TKIP):
974 *
975 * cmd 5e 00
976 * size 34 00
977 * sequence xx xx
978 * result 00 00
979 * action 01 00
980 * TLV type 00 01 key param
981 * length 00 26
982 * key type 01 00 TKIP
983 * key info 06 00 UNICAST | ENABLED
984 * key len 20 00
985 * key 32 bytes
986 */
987 memset(&cmd, 0, sizeof(cmd));
988 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
989 cmd.action = cpu_to_le16(CMD_ACT_SET);
990 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
991 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
992 cmd.param.keytypeid = cpu_to_le16(key_type);
993 cmd.param.keyinfo = cpu_to_le16(key_info);
994 cmd.param.keylen = cpu_to_le16(key_len);
995 if (key && key_len)
996 memcpy(cmd.param.key, key, key_len);
997
998 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
999
1000 lbs_deb_leave(LBS_DEB_CFG80211);
1001 return ret;
1002 }
1003
1004
1005 /*
1006 * Sets the auth type (open, shared, etc) in the firmware. That
1007 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1008 * command doesn't send an authentication frame at all, it just
1009 * stores the auth_type.
1010 */
1011 static int lbs_set_authtype(struct lbs_private *priv,
1012 struct cfg80211_connect_params *sme)
1013 {
1014 struct cmd_ds_802_11_authenticate cmd;
1015 int ret;
1016
1017 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1018
1019 /*
1020 * cmd 11 00
1021 * size 19 00
1022 * sequence xx xx
1023 * result 00 00
1024 * BSS id 00 13 19 80 da 30
1025 * auth type 00
1026 * reserved 00 00 00 00 00 00 00 00 00 00
1027 */
1028 memset(&cmd, 0, sizeof(cmd));
1029 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1030 if (sme->bssid)
1031 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1032 /* convert auth_type */
1033 ret = lbs_auth_to_authtype(sme->auth_type);
1034 if (ret < 0)
1035 goto done;
1036
1037 cmd.authtype = ret;
1038 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1039
1040 done:
1041 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1042 return ret;
1043 }
1044
1045
1046 /*
1047 * Create association request
1048 */
1049 #define LBS_ASSOC_MAX_CMD_SIZE \
1050 (sizeof(struct cmd_ds_802_11_associate) \
1051 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1052 + LBS_MAX_SSID_TLV_SIZE \
1053 + LBS_MAX_CHANNEL_TLV_SIZE \
1054 + LBS_MAX_CF_PARAM_TLV_SIZE \
1055 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1056 + LBS_MAX_WPA_TLV_SIZE)
1057
1058 static int lbs_associate(struct lbs_private *priv,
1059 struct cfg80211_bss *bss,
1060 struct cfg80211_connect_params *sme)
1061 {
1062 struct cmd_ds_802_11_associate_response *resp;
1063 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1064 GFP_KERNEL);
1065 const u8 *ssid_eid;
1066 size_t len, resp_ie_len;
1067 int status;
1068 int ret;
1069 u8 *pos = &(cmd->iebuf[0]);
1070 u8 *tmp;
1071
1072 lbs_deb_enter(LBS_DEB_CFG80211);
1073
1074 if (!cmd) {
1075 ret = -ENOMEM;
1076 goto done;
1077 }
1078
1079 /*
1080 * cmd 50 00
1081 * length 34 00
1082 * sequence xx xx
1083 * result 00 00
1084 * BSS id 00 13 19 80 da 30
1085 * capabilities 11 00
1086 * listen interval 0a 00
1087 * beacon interval 00 00
1088 * DTIM period 00
1089 * TLVs xx (up to 512 bytes)
1090 */
1091 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1092
1093 /* Fill in static fields */
1094 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1095 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1096 cmd->capability = cpu_to_le16(bss->capability);
1097
1098 /* add SSID TLV */
1099 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1100 if (ssid_eid)
1101 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1102 else
1103 lbs_deb_assoc("no SSID\n");
1104
1105 /* add DS param TLV */
1106 if (bss->channel)
1107 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1108 else
1109 lbs_deb_assoc("no channel\n");
1110
1111 /* add (empty) CF param TLV */
1112 pos += lbs_add_cf_param_tlv(pos);
1113
1114 /* add rates TLV */
1115 tmp = pos + 4; /* skip Marvell IE header */
1116 pos += lbs_add_common_rates_tlv(pos, bss);
1117 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1118
1119 /* add auth type TLV */
1120 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1121 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1122
1123 /* add WPA/WPA2 TLV */
1124 if (sme->ie && sme->ie_len)
1125 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1126
1127 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1128 (u16)(pos - (u8 *) &cmd->iebuf);
1129 cmd->hdr.size = cpu_to_le16(len);
1130
1131 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1132 le16_to_cpu(cmd->hdr.size));
1133
1134 /* store for later use */
1135 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1136
1137 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1138 if (ret)
1139 goto done;
1140
1141 /* generate connect message to cfg80211 */
1142
1143 resp = (void *) cmd; /* recast for easier field access */
1144 status = le16_to_cpu(resp->statuscode);
1145
1146 /* Older FW versions map the IEEE 802.11 Status Code in the association
1147 * response to the following values returned in resp->statuscode:
1148 *
1149 * IEEE Status Code Marvell Status Code
1150 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1151 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1152 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1153 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1154 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1155 * others -> 0x0003 ASSOC_RESULT_REFUSED
1156 *
1157 * Other response codes:
1158 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1159 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1160 * association response from the AP)
1161 */
1162 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1163 switch (status) {
1164 case 0:
1165 break;
1166 case 1:
1167 lbs_deb_assoc("invalid association parameters\n");
1168 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1169 break;
1170 case 2:
1171 lbs_deb_assoc("timer expired while waiting for AP\n");
1172 status = WLAN_STATUS_AUTH_TIMEOUT;
1173 break;
1174 case 3:
1175 lbs_deb_assoc("association refused by AP\n");
1176 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1177 break;
1178 case 4:
1179 lbs_deb_assoc("authentication refused by AP\n");
1180 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1181 break;
1182 default:
1183 lbs_deb_assoc("association failure %d\n", status);
1184 /* v5 OLPC firmware does return the AP status code if
1185 * it's not one of the values above. Let that through.
1186 */
1187 break;
1188 }
1189 }
1190
1191 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1192 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1193 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1194
1195 resp_ie_len = le16_to_cpu(resp->hdr.size)
1196 - sizeof(resp->hdr)
1197 - 6;
1198 cfg80211_connect_result(priv->dev,
1199 priv->assoc_bss,
1200 sme->ie, sme->ie_len,
1201 resp->iebuf, resp_ie_len,
1202 status,
1203 GFP_KERNEL);
1204
1205 if (status == 0) {
1206 /* TODO: get rid of priv->connect_status */
1207 priv->connect_status = LBS_CONNECTED;
1208 netif_carrier_on(priv->dev);
1209 if (!priv->tx_pending_len)
1210 netif_tx_wake_all_queues(priv->dev);
1211 }
1212
1213 done:
1214 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1215 return ret;
1216 }
1217
1218 static struct cfg80211_scan_request *
1219 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1220 {
1221 struct cfg80211_scan_request *creq = NULL;
1222 int i, n_channels = 0;
1223 enum ieee80211_band band;
1224
1225 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1226 if (wiphy->bands[band])
1227 n_channels += wiphy->bands[band]->n_channels;
1228 }
1229
1230 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1231 n_channels * sizeof(void *),
1232 GFP_ATOMIC);
1233 if (!creq)
1234 return NULL;
1235
1236 /* SSIDs come after channels */
1237 creq->ssids = (void *)&creq->channels[n_channels];
1238 creq->n_channels = n_channels;
1239 creq->n_ssids = 1;
1240
1241 /* Scan all available channels */
1242 i = 0;
1243 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1244 int j;
1245
1246 if (!wiphy->bands[band])
1247 continue;
1248
1249 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1250 /* ignore disabled channels */
1251 if (wiphy->bands[band]->channels[j].flags &
1252 IEEE80211_CHAN_DISABLED)
1253 continue;
1254
1255 creq->channels[i] = &wiphy->bands[band]->channels[j];
1256 i++;
1257 }
1258 }
1259 if (i) {
1260 /* Set real number of channels specified in creq->channels[] */
1261 creq->n_channels = i;
1262
1263 /* Scan for the SSID we're going to connect to */
1264 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1265 creq->ssids[0].ssid_len = sme->ssid_len;
1266 } else {
1267 /* No channels found... */
1268 kfree(creq);
1269 creq = NULL;
1270 }
1271
1272 return creq;
1273 }
1274
1275 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1276 struct cfg80211_connect_params *sme)
1277 {
1278 struct lbs_private *priv = wiphy_priv(wiphy);
1279 struct cfg80211_bss *bss = NULL;
1280 int ret = 0;
1281 u8 preamble = RADIO_PREAMBLE_SHORT;
1282
1283 lbs_deb_enter(LBS_DEB_CFG80211);
1284
1285 if (!sme->bssid) {
1286 /* Run a scan if one isn't in-progress already and if the last
1287 * scan was done more than 2 seconds ago.
1288 */
1289 if (priv->scan_req == NULL &&
1290 time_after(jiffies, priv->last_scan + (2 * HZ))) {
1291 struct cfg80211_scan_request *creq;
1292
1293 creq = _new_connect_scan_req(wiphy, sme);
1294 if (!creq) {
1295 ret = -EINVAL;
1296 goto done;
1297 }
1298
1299 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1300 _internal_start_scan(priv, true, creq);
1301 }
1302
1303 /* Wait for any in-progress scan to complete */
1304 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1305 wait_event_interruptible_timeout(priv->scan_q,
1306 (priv->scan_req == NULL),
1307 (15 * HZ));
1308 lbs_deb_assoc("assoc: scanning competed\n");
1309 }
1310
1311 /* Find the BSS we want using available scan results */
1312 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1313 sme->ssid, sme->ssid_len,
1314 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1315 if (!bss) {
1316 lbs_pr_err("assoc: bss %pM not in scan results\n",
1317 sme->bssid);
1318 ret = -ENOENT;
1319 goto done;
1320 }
1321 lbs_deb_assoc("trying %pM\n", bss->bssid);
1322 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1323 sme->crypto.cipher_group,
1324 sme->key_idx, sme->key_len);
1325
1326 /* As this is a new connection, clear locally stored WEP keys */
1327 priv->wep_tx_key = 0;
1328 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1329 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1330
1331 /* set/remove WEP keys */
1332 switch (sme->crypto.cipher_group) {
1333 case WLAN_CIPHER_SUITE_WEP40:
1334 case WLAN_CIPHER_SUITE_WEP104:
1335 /* Store provided WEP keys in priv-> */
1336 priv->wep_tx_key = sme->key_idx;
1337 priv->wep_key_len[sme->key_idx] = sme->key_len;
1338 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1339 /* Set WEP keys and WEP mode */
1340 lbs_set_wep_keys(priv);
1341 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1342 lbs_set_mac_control(priv);
1343 /* No RSN mode for WEP */
1344 lbs_enable_rsn(priv, 0);
1345 break;
1346 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1347 /*
1348 * If we don't have no WEP, no WPA and no WPA2,
1349 * we remove all keys like in the WPA/WPA2 setup,
1350 * we just don't set RSN.
1351 *
1352 * Therefore: fall-throught
1353 */
1354 case WLAN_CIPHER_SUITE_TKIP:
1355 case WLAN_CIPHER_SUITE_CCMP:
1356 /* Remove WEP keys and WEP mode */
1357 lbs_remove_wep_keys(priv);
1358 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1359 lbs_set_mac_control(priv);
1360
1361 /* clear the WPA/WPA2 keys */
1362 lbs_set_key_material(priv,
1363 KEY_TYPE_ID_WEP, /* doesn't matter */
1364 KEY_INFO_WPA_UNICAST,
1365 NULL, 0);
1366 lbs_set_key_material(priv,
1367 KEY_TYPE_ID_WEP, /* doesn't matter */
1368 KEY_INFO_WPA_MCAST,
1369 NULL, 0);
1370 /* RSN mode for WPA/WPA2 */
1371 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1372 break;
1373 default:
1374 lbs_pr_err("unsupported cipher group 0x%x\n",
1375 sme->crypto.cipher_group);
1376 ret = -ENOTSUPP;
1377 goto done;
1378 }
1379
1380 lbs_set_authtype(priv, sme);
1381 lbs_set_radio(priv, preamble, 1);
1382
1383 /* Do the actual association */
1384 ret = lbs_associate(priv, bss, sme);
1385
1386 done:
1387 if (bss)
1388 cfg80211_put_bss(bss);
1389 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1390 return ret;
1391 }
1392
1393 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1394 u16 reason_code)
1395 {
1396 struct lbs_private *priv = wiphy_priv(wiphy);
1397 struct cmd_ds_802_11_deauthenticate cmd;
1398
1399 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1400
1401 /* store for lbs_cfg_ret_disconnect() */
1402 priv->disassoc_reason = reason_code;
1403
1404 memset(&cmd, 0, sizeof(cmd));
1405 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1406 /* Mildly ugly to use a locally store my own BSSID ... */
1407 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1408 cmd.reasoncode = cpu_to_le16(reason_code);
1409
1410 if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1411 return -EFAULT;
1412
1413 cfg80211_disconnected(priv->dev,
1414 priv->disassoc_reason,
1415 NULL, 0,
1416 GFP_KERNEL);
1417 priv->connect_status = LBS_DISCONNECTED;
1418
1419 return 0;
1420 }
1421
1422
1423 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1424 struct net_device *netdev,
1425 u8 key_index, bool unicast,
1426 bool multicast)
1427 {
1428 struct lbs_private *priv = wiphy_priv(wiphy);
1429
1430 lbs_deb_enter(LBS_DEB_CFG80211);
1431
1432 if (key_index != priv->wep_tx_key) {
1433 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1434 priv->wep_tx_key = key_index;
1435 lbs_set_wep_keys(priv);
1436 }
1437
1438 return 0;
1439 }
1440
1441
1442 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1443 u8 idx, bool pairwise, const u8 *mac_addr,
1444 struct key_params *params)
1445 {
1446 struct lbs_private *priv = wiphy_priv(wiphy);
1447 u16 key_info;
1448 u16 key_type;
1449 int ret = 0;
1450
1451 lbs_deb_enter(LBS_DEB_CFG80211);
1452
1453 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1454 params->cipher, mac_addr);
1455 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1456 idx, params->key_len);
1457 if (params->key_len)
1458 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1459 params->key, params->key_len);
1460
1461 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1462 if (params->seq_len)
1463 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1464 params->seq, params->seq_len);
1465
1466 switch (params->cipher) {
1467 case WLAN_CIPHER_SUITE_WEP40:
1468 case WLAN_CIPHER_SUITE_WEP104:
1469 /* actually compare if something has changed ... */
1470 if ((priv->wep_key_len[idx] != params->key_len) ||
1471 memcmp(priv->wep_key[idx],
1472 params->key, params->key_len) != 0) {
1473 priv->wep_key_len[idx] = params->key_len;
1474 memcpy(priv->wep_key[idx],
1475 params->key, params->key_len);
1476 lbs_set_wep_keys(priv);
1477 }
1478 break;
1479 case WLAN_CIPHER_SUITE_TKIP:
1480 case WLAN_CIPHER_SUITE_CCMP:
1481 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1482 ? KEY_INFO_WPA_UNICAST
1483 : KEY_INFO_WPA_MCAST);
1484 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1485 ? KEY_TYPE_ID_TKIP
1486 : KEY_TYPE_ID_AES;
1487 lbs_set_key_material(priv,
1488 key_type,
1489 key_info,
1490 params->key, params->key_len);
1491 break;
1492 default:
1493 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1494 ret = -ENOTSUPP;
1495 break;
1496 }
1497
1498 return ret;
1499 }
1500
1501
1502 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1503 u8 key_index, bool pairwise, const u8 *mac_addr)
1504 {
1505
1506 lbs_deb_enter(LBS_DEB_CFG80211);
1507
1508 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1509 key_index, mac_addr);
1510
1511 #ifdef TODO
1512 struct lbs_private *priv = wiphy_priv(wiphy);
1513 /*
1514 * I think can keep this a NO-OP, because:
1515
1516 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1517 * - neither "iw" nor "wpa_supplicant" won't call this during
1518 * an ongoing connection
1519 * - TODO: but I have to check if this is still true when
1520 * I set the AP to periodic re-keying
1521 * - we've not kzallec() something when we've added a key at
1522 * lbs_cfg_connect() or lbs_cfg_add_key().
1523 *
1524 * This causes lbs_cfg_del_key() only called at disconnect time,
1525 * where we'd just waste time deleting a key that is not going
1526 * to be used anyway.
1527 */
1528 if (key_index < 3 && priv->wep_key_len[key_index]) {
1529 priv->wep_key_len[key_index] = 0;
1530 lbs_set_wep_keys(priv);
1531 }
1532 #endif
1533
1534 return 0;
1535 }
1536
1537
1538 /***************************************************************************
1539 * Get station
1540 */
1541
1542 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1543 u8 *mac, struct station_info *sinfo)
1544 {
1545 struct lbs_private *priv = wiphy_priv(wiphy);
1546 s8 signal, noise;
1547 int ret;
1548 size_t i;
1549
1550 lbs_deb_enter(LBS_DEB_CFG80211);
1551
1552 sinfo->filled |= STATION_INFO_TX_BYTES |
1553 STATION_INFO_TX_PACKETS |
1554 STATION_INFO_RX_BYTES |
1555 STATION_INFO_RX_PACKETS;
1556 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1557 sinfo->tx_packets = priv->dev->stats.tx_packets;
1558 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1559 sinfo->rx_packets = priv->dev->stats.rx_packets;
1560
1561 /* Get current RSSI */
1562 ret = lbs_get_rssi(priv, &signal, &noise);
1563 if (ret == 0) {
1564 sinfo->signal = signal;
1565 sinfo->filled |= STATION_INFO_SIGNAL;
1566 }
1567
1568 /* Convert priv->cur_rate from hw_value to NL80211 value */
1569 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1570 if (priv->cur_rate == lbs_rates[i].hw_value) {
1571 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1572 sinfo->filled |= STATION_INFO_TX_BITRATE;
1573 break;
1574 }
1575 }
1576
1577 return 0;
1578 }
1579
1580
1581
1582
1583 /***************************************************************************
1584 * "Site survey", here just current channel and noise level
1585 */
1586
1587 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1588 int idx, struct survey_info *survey)
1589 {
1590 struct lbs_private *priv = wiphy_priv(wiphy);
1591 s8 signal, noise;
1592 int ret;
1593
1594 if (idx != 0)
1595 ret = -ENOENT;
1596
1597 lbs_deb_enter(LBS_DEB_CFG80211);
1598
1599 survey->channel = ieee80211_get_channel(wiphy,
1600 ieee80211_channel_to_frequency(priv->channel));
1601
1602 ret = lbs_get_rssi(priv, &signal, &noise);
1603 if (ret == 0) {
1604 survey->filled = SURVEY_INFO_NOISE_DBM;
1605 survey->noise = noise;
1606 }
1607
1608 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1609 return ret;
1610 }
1611
1612
1613
1614
1615 /***************************************************************************
1616 * Change interface
1617 */
1618
1619 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1620 enum nl80211_iftype type, u32 *flags,
1621 struct vif_params *params)
1622 {
1623 struct lbs_private *priv = wiphy_priv(wiphy);
1624 int ret = 0;
1625
1626 lbs_deb_enter(LBS_DEB_CFG80211);
1627
1628 switch (type) {
1629 case NL80211_IFTYPE_MONITOR:
1630 ret = lbs_set_monitor_mode(priv, 1);
1631 break;
1632 case NL80211_IFTYPE_STATION:
1633 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1634 ret = lbs_set_monitor_mode(priv, 0);
1635 if (!ret)
1636 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1637 break;
1638 case NL80211_IFTYPE_ADHOC:
1639 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1640 ret = lbs_set_monitor_mode(priv, 0);
1641 if (!ret)
1642 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1643 break;
1644 default:
1645 ret = -ENOTSUPP;
1646 }
1647
1648 if (!ret)
1649 priv->wdev->iftype = type;
1650
1651 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1652 return ret;
1653 }
1654
1655
1656
1657 /***************************************************************************
1658 * IBSS (Ad-Hoc)
1659 */
1660
1661 /* The firmware needs the following bits masked out of the beacon-derived
1662 * capability field when associating/joining to a BSS:
1663 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1664 */
1665 #define CAPINFO_MASK (~(0xda00))
1666
1667
1668 static void lbs_join_post(struct lbs_private *priv,
1669 struct cfg80211_ibss_params *params,
1670 u8 *bssid, u16 capability)
1671 {
1672 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1673 2 + 4 + /* basic rates */
1674 2 + 1 + /* DS parameter */
1675 2 + 2 + /* atim */
1676 2 + 8]; /* extended rates */
1677 u8 *fake = fake_ie;
1678
1679 lbs_deb_enter(LBS_DEB_CFG80211);
1680
1681 /*
1682 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1683 * the real IE from the firmware. So we fabricate a fake IE based on
1684 * what the firmware actually sends (sniffed with wireshark).
1685 */
1686 /* Fake SSID IE */
1687 *fake++ = WLAN_EID_SSID;
1688 *fake++ = params->ssid_len;
1689 memcpy(fake, params->ssid, params->ssid_len);
1690 fake += params->ssid_len;
1691 /* Fake supported basic rates IE */
1692 *fake++ = WLAN_EID_SUPP_RATES;
1693 *fake++ = 4;
1694 *fake++ = 0x82;
1695 *fake++ = 0x84;
1696 *fake++ = 0x8b;
1697 *fake++ = 0x96;
1698 /* Fake DS channel IE */
1699 *fake++ = WLAN_EID_DS_PARAMS;
1700 *fake++ = 1;
1701 *fake++ = params->channel->hw_value;
1702 /* Fake IBSS params IE */
1703 *fake++ = WLAN_EID_IBSS_PARAMS;
1704 *fake++ = 2;
1705 *fake++ = 0; /* ATIM=0 */
1706 *fake++ = 0;
1707 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1708 * but I don't know how this could be checked */
1709 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1710 *fake++ = 8;
1711 *fake++ = 0x0c;
1712 *fake++ = 0x12;
1713 *fake++ = 0x18;
1714 *fake++ = 0x24;
1715 *fake++ = 0x30;
1716 *fake++ = 0x48;
1717 *fake++ = 0x60;
1718 *fake++ = 0x6c;
1719 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1720
1721 cfg80211_inform_bss(priv->wdev->wiphy,
1722 params->channel,
1723 bssid,
1724 0,
1725 capability,
1726 params->beacon_interval,
1727 fake_ie, fake - fake_ie,
1728 0, GFP_KERNEL);
1729
1730 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1731 priv->wdev->ssid_len = params->ssid_len;
1732
1733 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1734
1735 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1736 priv->connect_status = LBS_CONNECTED;
1737 netif_carrier_on(priv->dev);
1738 if (!priv->tx_pending_len)
1739 netif_wake_queue(priv->dev);
1740
1741 lbs_deb_leave(LBS_DEB_CFG80211);
1742 }
1743
1744 static int lbs_ibss_join_existing(struct lbs_private *priv,
1745 struct cfg80211_ibss_params *params,
1746 struct cfg80211_bss *bss)
1747 {
1748 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1749 struct cmd_ds_802_11_ad_hoc_join cmd;
1750 u8 preamble = RADIO_PREAMBLE_SHORT;
1751 int ret = 0;
1752
1753 lbs_deb_enter(LBS_DEB_CFG80211);
1754
1755 /* TODO: set preamble based on scan result */
1756 ret = lbs_set_radio(priv, preamble, 1);
1757 if (ret)
1758 goto out;
1759
1760 /*
1761 * Example CMD_802_11_AD_HOC_JOIN command:
1762 *
1763 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1764 * size 65 00
1765 * sequence xx xx
1766 * result 00 00
1767 * bssid 02 27 27 97 2f 96
1768 * ssid 49 42 53 53 00 00 00 00
1769 * 00 00 00 00 00 00 00 00
1770 * 00 00 00 00 00 00 00 00
1771 * 00 00 00 00 00 00 00 00
1772 * type 02 CMD_BSS_TYPE_IBSS
1773 * beacon period 64 00
1774 * dtim period 00
1775 * timestamp 00 00 00 00 00 00 00 00
1776 * localtime 00 00 00 00 00 00 00 00
1777 * IE DS 03
1778 * IE DS len 01
1779 * IE DS channel 01
1780 * reserveed 00 00 00 00
1781 * IE IBSS 06
1782 * IE IBSS len 02
1783 * IE IBSS atim 00 00
1784 * reserved 00 00 00 00
1785 * capability 02 00
1786 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1787 * fail timeout ff 00
1788 * probe delay 00 00
1789 */
1790 memset(&cmd, 0, sizeof(cmd));
1791 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1792
1793 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1794 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1795 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1796 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1797 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1798 cmd.bss.ds.header.len = 1;
1799 cmd.bss.ds.channel = params->channel->hw_value;
1800 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1801 cmd.bss.ibss.header.len = 2;
1802 cmd.bss.ibss.atimwindow = 0;
1803 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1804
1805 /* set rates to the intersection of our rates and the rates in the
1806 bss */
1807 if (!rates_eid) {
1808 lbs_add_rates(cmd.bss.rates);
1809 } else {
1810 int hw, i;
1811 u8 rates_max = rates_eid[1];
1812 u8 *rates = cmd.bss.rates;
1813 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1814 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1815 for (i = 0; i < rates_max; i++) {
1816 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1817 u8 rate = rates_eid[i+2];
1818 if (rate == 0x02 || rate == 0x04 ||
1819 rate == 0x0b || rate == 0x16)
1820 rate |= 0x80;
1821 *rates++ = rate;
1822 }
1823 }
1824 }
1825 }
1826
1827 /* Only v8 and below support setting this */
1828 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1829 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1830 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1831 }
1832 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1833 if (ret)
1834 goto out;
1835
1836 /*
1837 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1838 *
1839 * response 2c 80
1840 * size 09 00
1841 * sequence xx xx
1842 * result 00 00
1843 * reserved 00
1844 */
1845 lbs_join_post(priv, params, bss->bssid, bss->capability);
1846
1847 out:
1848 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1849 return ret;
1850 }
1851
1852
1853
1854 static int lbs_ibss_start_new(struct lbs_private *priv,
1855 struct cfg80211_ibss_params *params)
1856 {
1857 struct cmd_ds_802_11_ad_hoc_start cmd;
1858 struct cmd_ds_802_11_ad_hoc_result *resp =
1859 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1860 u8 preamble = RADIO_PREAMBLE_SHORT;
1861 int ret = 0;
1862 u16 capability;
1863
1864 lbs_deb_enter(LBS_DEB_CFG80211);
1865
1866 ret = lbs_set_radio(priv, preamble, 1);
1867 if (ret)
1868 goto out;
1869
1870 /*
1871 * Example CMD_802_11_AD_HOC_START command:
1872 *
1873 * command 2b 00 CMD_802_11_AD_HOC_START
1874 * size b1 00
1875 * sequence xx xx
1876 * result 00 00
1877 * ssid 54 45 53 54 00 00 00 00
1878 * 00 00 00 00 00 00 00 00
1879 * 00 00 00 00 00 00 00 00
1880 * 00 00 00 00 00 00 00 00
1881 * bss type 02
1882 * beacon period 64 00
1883 * dtim period 00
1884 * IE IBSS 06
1885 * IE IBSS len 02
1886 * IE IBSS atim 00 00
1887 * reserved 00 00 00 00
1888 * IE DS 03
1889 * IE DS len 01
1890 * IE DS channel 01
1891 * reserved 00 00 00 00
1892 * probe delay 00 00
1893 * capability 02 00
1894 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1895 * 0c 12 18 24 30 48 60 6c
1896 * padding 100 bytes
1897 */
1898 memset(&cmd, 0, sizeof(cmd));
1899 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1900 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1901 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1902 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1903 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1904 cmd.ibss.header.len = 2;
1905 cmd.ibss.atimwindow = 0;
1906 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1907 cmd.ds.header.len = 1;
1908 cmd.ds.channel = params->channel->hw_value;
1909 /* Only v8 and below support setting probe delay */
1910 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1911 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1912 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1913 capability = WLAN_CAPABILITY_IBSS;
1914 cmd.capability = cpu_to_le16(capability);
1915 lbs_add_rates(cmd.rates);
1916
1917
1918 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1919 if (ret)
1920 goto out;
1921
1922 /*
1923 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1924 *
1925 * response 2b 80
1926 * size 14 00
1927 * sequence xx xx
1928 * result 00 00
1929 * reserved 00
1930 * bssid 02 2b 7b 0f 86 0e
1931 */
1932 lbs_join_post(priv, params, resp->bssid, capability);
1933
1934 out:
1935 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1936 return ret;
1937 }
1938
1939
1940 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1941 struct cfg80211_ibss_params *params)
1942 {
1943 struct lbs_private *priv = wiphy_priv(wiphy);
1944 int ret = 0;
1945 struct cfg80211_bss *bss;
1946 DECLARE_SSID_BUF(ssid_buf);
1947
1948 lbs_deb_enter(LBS_DEB_CFG80211);
1949
1950 if (!params->channel) {
1951 ret = -ENOTSUPP;
1952 goto out;
1953 }
1954
1955 ret = lbs_set_channel(priv, params->channel->hw_value);
1956 if (ret)
1957 goto out;
1958
1959 /* Search if someone is beaconing. This assumes that the
1960 * bss list is populated already */
1961 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1962 params->ssid, params->ssid_len,
1963 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1964
1965 if (bss) {
1966 ret = lbs_ibss_join_existing(priv, params, bss);
1967 cfg80211_put_bss(bss);
1968 } else
1969 ret = lbs_ibss_start_new(priv, params);
1970
1971
1972 out:
1973 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1974 return ret;
1975 }
1976
1977
1978 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1979 {
1980 struct lbs_private *priv = wiphy_priv(wiphy);
1981 struct cmd_ds_802_11_ad_hoc_stop cmd;
1982 int ret = 0;
1983
1984 lbs_deb_enter(LBS_DEB_CFG80211);
1985
1986 memset(&cmd, 0, sizeof(cmd));
1987 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1988 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1989
1990 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1991 lbs_mac_event_disconnected(priv);
1992
1993 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1994 return ret;
1995 }
1996
1997
1998
1999
2000 /***************************************************************************
2001 * Initialization
2002 */
2003
2004 static struct cfg80211_ops lbs_cfg80211_ops = {
2005 .set_channel = lbs_cfg_set_channel,
2006 .scan = lbs_cfg_scan,
2007 .connect = lbs_cfg_connect,
2008 .disconnect = lbs_cfg_disconnect,
2009 .add_key = lbs_cfg_add_key,
2010 .del_key = lbs_cfg_del_key,
2011 .set_default_key = lbs_cfg_set_default_key,
2012 .get_station = lbs_cfg_get_station,
2013 .dump_survey = lbs_get_survey,
2014 .change_virtual_intf = lbs_change_intf,
2015 .join_ibss = lbs_join_ibss,
2016 .leave_ibss = lbs_leave_ibss,
2017 };
2018
2019
2020 /*
2021 * At this time lbs_private *priv doesn't even exist, so we just allocate
2022 * memory and don't initialize the wiphy further. This is postponed until we
2023 * can talk to the firmware and happens at registration time in
2024 * lbs_cfg_wiphy_register().
2025 */
2026 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2027 {
2028 int ret = 0;
2029 struct wireless_dev *wdev;
2030
2031 lbs_deb_enter(LBS_DEB_CFG80211);
2032
2033 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2034 if (!wdev) {
2035 dev_err(dev, "cannot allocate wireless device\n");
2036 return ERR_PTR(-ENOMEM);
2037 }
2038
2039 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2040 if (!wdev->wiphy) {
2041 dev_err(dev, "cannot allocate wiphy\n");
2042 ret = -ENOMEM;
2043 goto err_wiphy_new;
2044 }
2045
2046 lbs_deb_leave(LBS_DEB_CFG80211);
2047 return wdev;
2048
2049 err_wiphy_new:
2050 kfree(wdev);
2051 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2052 return ERR_PTR(ret);
2053 }
2054
2055
2056 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2057 {
2058 struct region_code_mapping {
2059 const char *cn;
2060 int code;
2061 };
2062
2063 /* Section 5.17.2 */
2064 static const struct region_code_mapping regmap[] = {
2065 {"US ", 0x10}, /* US FCC */
2066 {"CA ", 0x20}, /* Canada */
2067 {"EU ", 0x30}, /* ETSI */
2068 {"ES ", 0x31}, /* Spain */
2069 {"FR ", 0x32}, /* France */
2070 {"JP ", 0x40}, /* Japan */
2071 };
2072 size_t i;
2073
2074 lbs_deb_enter(LBS_DEB_CFG80211);
2075
2076 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2077 if (regmap[i].code == priv->regioncode) {
2078 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2079 break;
2080 }
2081
2082 lbs_deb_leave(LBS_DEB_CFG80211);
2083 }
2084
2085
2086 /*
2087 * This function get's called after lbs_setup_firmware() determined the
2088 * firmware capabities. So we can setup the wiphy according to our
2089 * hardware/firmware.
2090 */
2091 int lbs_cfg_register(struct lbs_private *priv)
2092 {
2093 struct wireless_dev *wdev = priv->wdev;
2094 int ret;
2095
2096 lbs_deb_enter(LBS_DEB_CFG80211);
2097
2098 wdev->wiphy->max_scan_ssids = 1;
2099 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2100
2101 wdev->wiphy->interface_modes =
2102 BIT(NL80211_IFTYPE_STATION) |
2103 BIT(NL80211_IFTYPE_ADHOC);
2104 if (lbs_rtap_supported(priv))
2105 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2106
2107 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2108
2109 /*
2110 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2111 * never seen a firmware without WPA
2112 */
2113 wdev->wiphy->cipher_suites = cipher_suites;
2114 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2115 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2116
2117 ret = wiphy_register(wdev->wiphy);
2118 if (ret < 0)
2119 lbs_pr_err("cannot register wiphy device\n");
2120
2121 priv->wiphy_registered = true;
2122
2123 ret = register_netdev(priv->dev);
2124 if (ret)
2125 lbs_pr_err("cannot register network device\n");
2126
2127 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2128
2129 lbs_cfg_set_regulatory_hint(priv);
2130
2131 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2132 return ret;
2133 }
2134
2135 int lbs_reg_notifier(struct wiphy *wiphy,
2136 struct regulatory_request *request)
2137 {
2138 struct lbs_private *priv = wiphy_priv(wiphy);
2139 int ret;
2140
2141 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2142 "callback for domain %c%c\n", request->alpha2[0],
2143 request->alpha2[1]);
2144
2145 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2146
2147 lbs_deb_leave(LBS_DEB_CFG80211);
2148 return ret;
2149 }
2150
2151 void lbs_scan_deinit(struct lbs_private *priv)
2152 {
2153 lbs_deb_enter(LBS_DEB_CFG80211);
2154 cancel_delayed_work_sync(&priv->scan_work);
2155 }
2156
2157
2158 void lbs_cfg_free(struct lbs_private *priv)
2159 {
2160 struct wireless_dev *wdev = priv->wdev;
2161
2162 lbs_deb_enter(LBS_DEB_CFG80211);
2163
2164 if (!wdev)
2165 return;
2166
2167 if (priv->wiphy_registered)
2168 wiphy_unregister(wdev->wiphy);
2169
2170 if (wdev->wiphy)
2171 wiphy_free(wdev->wiphy);
2172
2173 kfree(wdev);
2174 }