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libertas: Use static const
[linux-2.6.git] / drivers / net / wireless / libertas / cfg.c
bloba90953678b997b3d99b710c1ae267f3202f5b8d3
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 queue_delayed_work(priv->work_thread, &priv->scan_work,
702 msecs_to_jiffies(300));
703 }
704
705 /* This is the final data we are about to send */
706 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
707 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
708 sizeof(*scan_cmd));
709 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
710 tlv - scan_cmd->tlvbuffer);
711
712 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
713 le16_to_cpu(scan_cmd->hdr.size),
714 lbs_ret_scan, 0);
715
716 if (priv->scan_channel >= priv->scan_req->n_channels) {
717 /* Mark scan done */
718 if (priv->internal_scan)
719 kfree(priv->scan_req);
720 else
721 cfg80211_scan_done(priv->scan_req, false);
722
723 priv->scan_req = NULL;
724 priv->last_scan = jiffies;
725 }
726
727 /* Restart network */
728 if (carrier)
729 netif_carrier_on(priv->dev);
730 if (running && !priv->tx_pending_len)
731 netif_wake_queue(priv->dev);
732
733 kfree(scan_cmd);
734
735 /* Wake up anything waiting on scan completion */
736 if (priv->scan_req == NULL) {
737 lbs_deb_scan("scan: waking up waiters\n");
738 wake_up_all(&priv->scan_q);
739 }
740
741 out_no_scan_cmd:
742 lbs_deb_leave(LBS_DEB_SCAN);
743 }
744
745 static void _internal_start_scan(struct lbs_private *priv, bool internal,
746 struct cfg80211_scan_request *request)
747 {
748 lbs_deb_enter(LBS_DEB_CFG80211);
749
750 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
751 request->n_ssids, request->n_channels, request->ie_len);
752
753 priv->scan_channel = 0;
754 queue_delayed_work(priv->work_thread, &priv->scan_work,
755 msecs_to_jiffies(50));
756
757 priv->scan_req = request;
758 priv->internal_scan = internal;
759
760 lbs_deb_leave(LBS_DEB_CFG80211);
761 }
762
763 static int lbs_cfg_scan(struct wiphy *wiphy,
764 struct net_device *dev,
765 struct cfg80211_scan_request *request)
766 {
767 struct lbs_private *priv = wiphy_priv(wiphy);
768 int ret = 0;
769
770 lbs_deb_enter(LBS_DEB_CFG80211);
771
772 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
773 /* old scan request not yet processed */
774 ret = -EAGAIN;
775 goto out;
776 }
777
778 _internal_start_scan(priv, false, request);
779
780 if (priv->surpriseremoved)
781 ret = -EIO;
782
783 out:
784 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
785 return ret;
786 }
787
788
789
790
791 /***************************************************************************
792 * Events
793 */
794
795 void lbs_send_disconnect_notification(struct lbs_private *priv)
796 {
797 lbs_deb_enter(LBS_DEB_CFG80211);
798
799 cfg80211_disconnected(priv->dev,
800 0,
801 NULL, 0,
802 GFP_KERNEL);
803
804 lbs_deb_leave(LBS_DEB_CFG80211);
805 }
806
807 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
808 {
809 lbs_deb_enter(LBS_DEB_CFG80211);
810
811 cfg80211_michael_mic_failure(priv->dev,
812 priv->assoc_bss,
813 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
814 NL80211_KEYTYPE_GROUP :
815 NL80211_KEYTYPE_PAIRWISE,
816 -1,
817 NULL,
818 GFP_KERNEL);
819
820 lbs_deb_leave(LBS_DEB_CFG80211);
821 }
822
823
824
825
826 /***************************************************************************
827 * Connect/disconnect
828 */
829
830
831 /*
832 * This removes all WEP keys
833 */
834 static int lbs_remove_wep_keys(struct lbs_private *priv)
835 {
836 struct cmd_ds_802_11_set_wep cmd;
837 int ret;
838
839 lbs_deb_enter(LBS_DEB_CFG80211);
840
841 memset(&cmd, 0, sizeof(cmd));
842 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
843 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
844 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
845
846 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
847
848 lbs_deb_leave(LBS_DEB_CFG80211);
849 return ret;
850 }
851
852 /*
853 * Set WEP keys
854 */
855 static int lbs_set_wep_keys(struct lbs_private *priv)
856 {
857 struct cmd_ds_802_11_set_wep cmd;
858 int i;
859 int ret;
860
861 lbs_deb_enter(LBS_DEB_CFG80211);
862
863 /*
864 * command 13 00
865 * size 50 00
866 * sequence xx xx
867 * result 00 00
868 * action 02 00 ACT_ADD
869 * transmit key 00 00
870 * type for key 1 01 WEP40
871 * type for key 2 00
872 * type for key 3 00
873 * type for key 4 00
874 * key 1 39 39 39 39 39 00 00 00
875 * 00 00 00 00 00 00 00 00
876 * key 2 00 00 00 00 00 00 00 00
877 * 00 00 00 00 00 00 00 00
878 * key 3 00 00 00 00 00 00 00 00
879 * 00 00 00 00 00 00 00 00
880 * key 4 00 00 00 00 00 00 00 00
881 */
882 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
883 priv->wep_key_len[2] || priv->wep_key_len[3]) {
884 /* Only set wep keys if we have at least one of them */
885 memset(&cmd, 0, sizeof(cmd));
886 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
887 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
888 cmd.action = cpu_to_le16(CMD_ACT_ADD);
889
890 for (i = 0; i < 4; i++) {
891 switch (priv->wep_key_len[i]) {
892 case WLAN_KEY_LEN_WEP40:
893 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
894 break;
895 case WLAN_KEY_LEN_WEP104:
896 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
897 break;
898 default:
899 cmd.keytype[i] = 0;
900 break;
901 }
902 memcpy(cmd.keymaterial[i], priv->wep_key[i],
903 priv->wep_key_len[i]);
904 }
905
906 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
907 } else {
908 /* Otherwise remove all wep keys */
909 ret = lbs_remove_wep_keys(priv);
910 }
911
912 lbs_deb_leave(LBS_DEB_CFG80211);
913 return ret;
914 }
915
916
917 /*
918 * Enable/Disable RSN status
919 */
920 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
921 {
922 struct cmd_ds_802_11_enable_rsn cmd;
923 int ret;
924
925 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
926
927 /*
928 * cmd 2f 00
929 * size 0c 00
930 * sequence xx xx
931 * result 00 00
932 * action 01 00 ACT_SET
933 * enable 01 00
934 */
935 memset(&cmd, 0, sizeof(cmd));
936 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
937 cmd.action = cpu_to_le16(CMD_ACT_SET);
938 cmd.enable = cpu_to_le16(enable);
939
940 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
941
942 lbs_deb_leave(LBS_DEB_CFG80211);
943 return ret;
944 }
945
946
947 /*
948 * Set WPA/WPA key material
949 */
950
951 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
952 * get rid of WEXT, this should go into host.h */
953
954 struct cmd_key_material {
955 struct cmd_header hdr;
956
957 __le16 action;
958 struct MrvlIEtype_keyParamSet param;
959 } __packed;
960
961 static int lbs_set_key_material(struct lbs_private *priv,
962 int key_type,
963 int key_info,
964 u8 *key, u16 key_len)
965 {
966 struct cmd_key_material cmd;
967 int ret;
968
969 lbs_deb_enter(LBS_DEB_CFG80211);
970
971 /*
972 * Example for WPA (TKIP):
973 *
974 * cmd 5e 00
975 * size 34 00
976 * sequence xx xx
977 * result 00 00
978 * action 01 00
979 * TLV type 00 01 key param
980 * length 00 26
981 * key type 01 00 TKIP
982 * key info 06 00 UNICAST | ENABLED
983 * key len 20 00
984 * key 32 bytes
985 */
986 memset(&cmd, 0, sizeof(cmd));
987 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
988 cmd.action = cpu_to_le16(CMD_ACT_SET);
989 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
990 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
991 cmd.param.keytypeid = cpu_to_le16(key_type);
992 cmd.param.keyinfo = cpu_to_le16(key_info);
993 cmd.param.keylen = cpu_to_le16(key_len);
994 if (key && key_len)
995 memcpy(cmd.param.key, key, key_len);
996
997 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
998
999 lbs_deb_leave(LBS_DEB_CFG80211);
1000 return ret;
1001 }
1002
1003
1004 /*
1005 * Sets the auth type (open, shared, etc) in the firmware. That
1006 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1007 * command doesn't send an authentication frame at all, it just
1008 * stores the auth_type.
1009 */
1010 static int lbs_set_authtype(struct lbs_private *priv,
1011 struct cfg80211_connect_params *sme)
1012 {
1013 struct cmd_ds_802_11_authenticate cmd;
1014 int ret;
1015
1016 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1017
1018 /*
1019 * cmd 11 00
1020 * size 19 00
1021 * sequence xx xx
1022 * result 00 00
1023 * BSS id 00 13 19 80 da 30
1024 * auth type 00
1025 * reserved 00 00 00 00 00 00 00 00 00 00
1026 */
1027 memset(&cmd, 0, sizeof(cmd));
1028 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1029 if (sme->bssid)
1030 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1031 /* convert auth_type */
1032 ret = lbs_auth_to_authtype(sme->auth_type);
1033 if (ret < 0)
1034 goto done;
1035
1036 cmd.authtype = ret;
1037 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1038
1039 done:
1040 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1041 return ret;
1042 }
1043
1044
1045 /*
1046 * Create association request
1047 */
1048 #define LBS_ASSOC_MAX_CMD_SIZE \
1049 (sizeof(struct cmd_ds_802_11_associate) \
1050 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1051 + LBS_MAX_SSID_TLV_SIZE \
1052 + LBS_MAX_CHANNEL_TLV_SIZE \
1053 + LBS_MAX_CF_PARAM_TLV_SIZE \
1054 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1055 + LBS_MAX_WPA_TLV_SIZE)
1056
1057 static int lbs_associate(struct lbs_private *priv,
1058 struct cfg80211_bss *bss,
1059 struct cfg80211_connect_params *sme)
1060 {
1061 struct cmd_ds_802_11_associate_response *resp;
1062 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1063 GFP_KERNEL);
1064 const u8 *ssid_eid;
1065 size_t len, resp_ie_len;
1066 int status;
1067 int ret;
1068 u8 *pos = &(cmd->iebuf[0]);
1069 u8 *tmp;
1070
1071 lbs_deb_enter(LBS_DEB_CFG80211);
1072
1073 if (!cmd) {
1074 ret = -ENOMEM;
1075 goto done;
1076 }
1077
1078 /*
1079 * cmd 50 00
1080 * length 34 00
1081 * sequence xx xx
1082 * result 00 00
1083 * BSS id 00 13 19 80 da 30
1084 * capabilities 11 00
1085 * listen interval 0a 00
1086 * beacon interval 00 00
1087 * DTIM period 00
1088 * TLVs xx (up to 512 bytes)
1089 */
1090 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1091
1092 /* Fill in static fields */
1093 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1094 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1095 cmd->capability = cpu_to_le16(bss->capability);
1096
1097 /* add SSID TLV */
1098 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1099 if (ssid_eid)
1100 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1101 else
1102 lbs_deb_assoc("no SSID\n");
1103
1104 /* add DS param TLV */
1105 if (bss->channel)
1106 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1107 else
1108 lbs_deb_assoc("no channel\n");
1109
1110 /* add (empty) CF param TLV */
1111 pos += lbs_add_cf_param_tlv(pos);
1112
1113 /* add rates TLV */
1114 tmp = pos + 4; /* skip Marvell IE header */
1115 pos += lbs_add_common_rates_tlv(pos, bss);
1116 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1117
1118 /* add auth type TLV */
1119 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1120 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1121
1122 /* add WPA/WPA2 TLV */
1123 if (sme->ie && sme->ie_len)
1124 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1125
1126 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1127 (u16)(pos - (u8 *) &cmd->iebuf);
1128 cmd->hdr.size = cpu_to_le16(len);
1129
1130 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1131 le16_to_cpu(cmd->hdr.size));
1132
1133 /* store for later use */
1134 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1135
1136 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1137 if (ret)
1138 goto done;
1139
1140 /* generate connect message to cfg80211 */
1141
1142 resp = (void *) cmd; /* recast for easier field access */
1143 status = le16_to_cpu(resp->statuscode);
1144
1145 /* Older FW versions map the IEEE 802.11 Status Code in the association
1146 * response to the following values returned in resp->statuscode:
1147 *
1148 * IEEE Status Code Marvell Status Code
1149 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1150 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1151 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1152 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1153 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1154 * others -> 0x0003 ASSOC_RESULT_REFUSED
1155 *
1156 * Other response codes:
1157 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1158 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1159 * association response from the AP)
1160 */
1161 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1162 switch (status) {
1163 case 0:
1164 break;
1165 case 1:
1166 lbs_deb_assoc("invalid association parameters\n");
1167 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1168 break;
1169 case 2:
1170 lbs_deb_assoc("timer expired while waiting for AP\n");
1171 status = WLAN_STATUS_AUTH_TIMEOUT;
1172 break;
1173 case 3:
1174 lbs_deb_assoc("association refused by AP\n");
1175 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1176 break;
1177 case 4:
1178 lbs_deb_assoc("authentication refused by AP\n");
1179 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1180 break;
1181 default:
1182 lbs_deb_assoc("association failure %d\n", status);
1183 /* v5 OLPC firmware does return the AP status code if
1184 * it's not one of the values above. Let that through.
1185 */
1186 break;
1187 }
1188 }
1189
1190 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1191 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1192 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1193
1194 resp_ie_len = le16_to_cpu(resp->hdr.size)
1195 - sizeof(resp->hdr)
1196 - 6;
1197 cfg80211_connect_result(priv->dev,
1198 priv->assoc_bss,
1199 sme->ie, sme->ie_len,
1200 resp->iebuf, resp_ie_len,
1201 status,
1202 GFP_KERNEL);
1203
1204 if (status == 0) {
1205 /* TODO: get rid of priv->connect_status */
1206 priv->connect_status = LBS_CONNECTED;
1207 netif_carrier_on(priv->dev);
1208 if (!priv->tx_pending_len)
1209 netif_tx_wake_all_queues(priv->dev);
1210 }
1211
1212 done:
1213 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1214 return ret;
1215 }
1216
1217 static struct cfg80211_scan_request *
1218 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1219 {
1220 struct cfg80211_scan_request *creq = NULL;
1221 int i, n_channels = 0;
1222 enum ieee80211_band band;
1223
1224 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1225 if (wiphy->bands[band])
1226 n_channels += wiphy->bands[band]->n_channels;
1227 }
1228
1229 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1230 n_channels * sizeof(void *),
1231 GFP_ATOMIC);
1232 if (!creq)
1233 return NULL;
1234
1235 /* SSIDs come after channels */
1236 creq->ssids = (void *)&creq->channels[n_channels];
1237 creq->n_channels = n_channels;
1238 creq->n_ssids = 1;
1239
1240 /* Scan all available channels */
1241 i = 0;
1242 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1243 int j;
1244
1245 if (!wiphy->bands[band])
1246 continue;
1247
1248 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1249 /* ignore disabled channels */
1250 if (wiphy->bands[band]->channels[j].flags &
1251 IEEE80211_CHAN_DISABLED)
1252 continue;
1253
1254 creq->channels[i] = &wiphy->bands[band]->channels[j];
1255 i++;
1256 }
1257 }
1258 if (i) {
1259 /* Set real number of channels specified in creq->channels[] */
1260 creq->n_channels = i;
1261
1262 /* Scan for the SSID we're going to connect to */
1263 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1264 creq->ssids[0].ssid_len = sme->ssid_len;
1265 } else {
1266 /* No channels found... */
1267 kfree(creq);
1268 creq = NULL;
1269 }
1270
1271 return creq;
1272 }
1273
1274 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1275 struct cfg80211_connect_params *sme)
1276 {
1277 struct lbs_private *priv = wiphy_priv(wiphy);
1278 struct cfg80211_bss *bss = NULL;
1279 int ret = 0;
1280 u8 preamble = RADIO_PREAMBLE_SHORT;
1281
1282 lbs_deb_enter(LBS_DEB_CFG80211);
1283
1284 if (!sme->bssid) {
1285 /* Run a scan if one isn't in-progress already and if the last
1286 * scan was done more than 2 seconds ago.
1287 */
1288 if (priv->scan_req == NULL &&
1289 time_after(jiffies, priv->last_scan + (2 * HZ))) {
1290 struct cfg80211_scan_request *creq;
1291
1292 creq = _new_connect_scan_req(wiphy, sme);
1293 if (!creq) {
1294 ret = -EINVAL;
1295 goto done;
1296 }
1297
1298 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1299 _internal_start_scan(priv, true, creq);
1300 }
1301
1302 /* Wait for any in-progress scan to complete */
1303 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1304 wait_event_interruptible_timeout(priv->scan_q,
1305 (priv->scan_req == NULL),
1306 (15 * HZ));
1307 lbs_deb_assoc("assoc: scanning competed\n");
1308 }
1309
1310 /* Find the BSS we want using available scan results */
1311 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1312 sme->ssid, sme->ssid_len,
1313 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1314 if (!bss) {
1315 lbs_pr_err("assoc: bss %pM not in scan results\n",
1316 sme->bssid);
1317 ret = -ENOENT;
1318 goto done;
1319 }
1320 lbs_deb_assoc("trying %pM\n", bss->bssid);
1321 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1322 sme->crypto.cipher_group,
1323 sme->key_idx, sme->key_len);
1324
1325 /* As this is a new connection, clear locally stored WEP keys */
1326 priv->wep_tx_key = 0;
1327 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1328 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1329
1330 /* set/remove WEP keys */
1331 switch (sme->crypto.cipher_group) {
1332 case WLAN_CIPHER_SUITE_WEP40:
1333 case WLAN_CIPHER_SUITE_WEP104:
1334 /* Store provided WEP keys in priv-> */
1335 priv->wep_tx_key = sme->key_idx;
1336 priv->wep_key_len[sme->key_idx] = sme->key_len;
1337 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1338 /* Set WEP keys and WEP mode */
1339 lbs_set_wep_keys(priv);
1340 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1341 lbs_set_mac_control(priv);
1342 /* No RSN mode for WEP */
1343 lbs_enable_rsn(priv, 0);
1344 break;
1345 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1346 /*
1347 * If we don't have no WEP, no WPA and no WPA2,
1348 * we remove all keys like in the WPA/WPA2 setup,
1349 * we just don't set RSN.
1350 *
1351 * Therefore: fall-throught
1352 */
1353 case WLAN_CIPHER_SUITE_TKIP:
1354 case WLAN_CIPHER_SUITE_CCMP:
1355 /* Remove WEP keys and WEP mode */
1356 lbs_remove_wep_keys(priv);
1357 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1358 lbs_set_mac_control(priv);
1359
1360 /* clear the WPA/WPA2 keys */
1361 lbs_set_key_material(priv,
1362 KEY_TYPE_ID_WEP, /* doesn't matter */
1363 KEY_INFO_WPA_UNICAST,
1364 NULL, 0);
1365 lbs_set_key_material(priv,
1366 KEY_TYPE_ID_WEP, /* doesn't matter */
1367 KEY_INFO_WPA_MCAST,
1368 NULL, 0);
1369 /* RSN mode for WPA/WPA2 */
1370 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1371 break;
1372 default:
1373 lbs_pr_err("unsupported cipher group 0x%x\n",
1374 sme->crypto.cipher_group);
1375 ret = -ENOTSUPP;
1376 goto done;
1377 }
1378
1379 lbs_set_authtype(priv, sme);
1380 lbs_set_radio(priv, preamble, 1);
1381
1382 /* Do the actual association */
1383 ret = lbs_associate(priv, bss, sme);
1384
1385 done:
1386 if (bss)
1387 cfg80211_put_bss(bss);
1388 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1389 return ret;
1390 }
1391
1392 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1393 u16 reason_code)
1394 {
1395 struct lbs_private *priv = wiphy_priv(wiphy);
1396 struct cmd_ds_802_11_deauthenticate cmd;
1397
1398 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1399
1400 /* store for lbs_cfg_ret_disconnect() */
1401 priv->disassoc_reason = reason_code;
1402
1403 memset(&cmd, 0, sizeof(cmd));
1404 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1405 /* Mildly ugly to use a locally store my own BSSID ... */
1406 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1407 cmd.reasoncode = cpu_to_le16(reason_code);
1408
1409 if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1410 return -EFAULT;
1411
1412 cfg80211_disconnected(priv->dev,
1413 priv->disassoc_reason,
1414 NULL, 0,
1415 GFP_KERNEL);
1416 priv->connect_status = LBS_DISCONNECTED;
1417
1418 return 0;
1419 }
1420
1421
1422 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1423 struct net_device *netdev,
1424 u8 key_index)
1425 {
1426 struct lbs_private *priv = wiphy_priv(wiphy);
1427
1428 lbs_deb_enter(LBS_DEB_CFG80211);
1429
1430 if (key_index != priv->wep_tx_key) {
1431 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1432 priv->wep_tx_key = key_index;
1433 lbs_set_wep_keys(priv);
1434 }
1435
1436 return 0;
1437 }
1438
1439
1440 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1441 u8 idx, bool pairwise, const u8 *mac_addr,
1442 struct key_params *params)
1443 {
1444 struct lbs_private *priv = wiphy_priv(wiphy);
1445 u16 key_info;
1446 u16 key_type;
1447 int ret = 0;
1448
1449 lbs_deb_enter(LBS_DEB_CFG80211);
1450
1451 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1452 params->cipher, mac_addr);
1453 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1454 idx, params->key_len);
1455 if (params->key_len)
1456 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1457 params->key, params->key_len);
1458
1459 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1460 if (params->seq_len)
1461 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1462 params->seq, params->seq_len);
1463
1464 switch (params->cipher) {
1465 case WLAN_CIPHER_SUITE_WEP40:
1466 case WLAN_CIPHER_SUITE_WEP104:
1467 /* actually compare if something has changed ... */
1468 if ((priv->wep_key_len[idx] != params->key_len) ||
1469 memcmp(priv->wep_key[idx],
1470 params->key, params->key_len) != 0) {
1471 priv->wep_key_len[idx] = params->key_len;
1472 memcpy(priv->wep_key[idx],
1473 params->key, params->key_len);
1474 lbs_set_wep_keys(priv);
1475 }
1476 break;
1477 case WLAN_CIPHER_SUITE_TKIP:
1478 case WLAN_CIPHER_SUITE_CCMP:
1479 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1480 ? KEY_INFO_WPA_UNICAST
1481 : KEY_INFO_WPA_MCAST);
1482 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1483 ? KEY_TYPE_ID_TKIP
1484 : KEY_TYPE_ID_AES;
1485 lbs_set_key_material(priv,
1486 key_type,
1487 key_info,
1488 params->key, params->key_len);
1489 break;
1490 default:
1491 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1492 ret = -ENOTSUPP;
1493 break;
1494 }
1495
1496 return ret;
1497 }
1498
1499
1500 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1501 u8 key_index, bool pairwise, const u8 *mac_addr)
1502 {
1503
1504 lbs_deb_enter(LBS_DEB_CFG80211);
1505
1506 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1507 key_index, mac_addr);
1508
1509 #ifdef TODO
1510 struct lbs_private *priv = wiphy_priv(wiphy);
1511 /*
1512 * I think can keep this a NO-OP, because:
1513
1514 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1515 * - neither "iw" nor "wpa_supplicant" won't call this during
1516 * an ongoing connection
1517 * - TODO: but I have to check if this is still true when
1518 * I set the AP to periodic re-keying
1519 * - we've not kzallec() something when we've added a key at
1520 * lbs_cfg_connect() or lbs_cfg_add_key().
1521 *
1522 * This causes lbs_cfg_del_key() only called at disconnect time,
1523 * where we'd just waste time deleting a key that is not going
1524 * to be used anyway.
1525 */
1526 if (key_index < 3 && priv->wep_key_len[key_index]) {
1527 priv->wep_key_len[key_index] = 0;
1528 lbs_set_wep_keys(priv);
1529 }
1530 #endif
1531
1532 return 0;
1533 }
1534
1535
1536 /***************************************************************************
1537 * Get station
1538 */
1539
1540 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1541 u8 *mac, struct station_info *sinfo)
1542 {
1543 struct lbs_private *priv = wiphy_priv(wiphy);
1544 s8 signal, noise;
1545 int ret;
1546 size_t i;
1547
1548 lbs_deb_enter(LBS_DEB_CFG80211);
1549
1550 sinfo->filled |= STATION_INFO_TX_BYTES |
1551 STATION_INFO_TX_PACKETS |
1552 STATION_INFO_RX_BYTES |
1553 STATION_INFO_RX_PACKETS;
1554 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1555 sinfo->tx_packets = priv->dev->stats.tx_packets;
1556 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1557 sinfo->rx_packets = priv->dev->stats.rx_packets;
1558
1559 /* Get current RSSI */
1560 ret = lbs_get_rssi(priv, &signal, &noise);
1561 if (ret == 0) {
1562 sinfo->signal = signal;
1563 sinfo->filled |= STATION_INFO_SIGNAL;
1564 }
1565
1566 /* Convert priv->cur_rate from hw_value to NL80211 value */
1567 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1568 if (priv->cur_rate == lbs_rates[i].hw_value) {
1569 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1570 sinfo->filled |= STATION_INFO_TX_BITRATE;
1571 break;
1572 }
1573 }
1574
1575 return 0;
1576 }
1577
1578
1579
1580
1581 /***************************************************************************
1582 * "Site survey", here just current channel and noise level
1583 */
1584
1585 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1586 int idx, struct survey_info *survey)
1587 {
1588 struct lbs_private *priv = wiphy_priv(wiphy);
1589 s8 signal, noise;
1590 int ret;
1591
1592 if (idx != 0)
1593 ret = -ENOENT;
1594
1595 lbs_deb_enter(LBS_DEB_CFG80211);
1596
1597 survey->channel = ieee80211_get_channel(wiphy,
1598 ieee80211_channel_to_frequency(priv->channel));
1599
1600 ret = lbs_get_rssi(priv, &signal, &noise);
1601 if (ret == 0) {
1602 survey->filled = SURVEY_INFO_NOISE_DBM;
1603 survey->noise = noise;
1604 }
1605
1606 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1607 return ret;
1608 }
1609
1610
1611
1612
1613 /***************************************************************************
1614 * Change interface
1615 */
1616
1617 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1618 enum nl80211_iftype type, u32 *flags,
1619 struct vif_params *params)
1620 {
1621 struct lbs_private *priv = wiphy_priv(wiphy);
1622 int ret = 0;
1623
1624 lbs_deb_enter(LBS_DEB_CFG80211);
1625
1626 switch (type) {
1627 case NL80211_IFTYPE_MONITOR:
1628 ret = lbs_set_monitor_mode(priv, 1);
1629 break;
1630 case NL80211_IFTYPE_STATION:
1631 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1632 ret = lbs_set_monitor_mode(priv, 0);
1633 if (!ret)
1634 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1635 break;
1636 case NL80211_IFTYPE_ADHOC:
1637 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1638 ret = lbs_set_monitor_mode(priv, 0);
1639 if (!ret)
1640 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1641 break;
1642 default:
1643 ret = -ENOTSUPP;
1644 }
1645
1646 if (!ret)
1647 priv->wdev->iftype = type;
1648
1649 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1650 return ret;
1651 }
1652
1653
1654
1655 /***************************************************************************
1656 * IBSS (Ad-Hoc)
1657 */
1658
1659 /* The firmware needs the following bits masked out of the beacon-derived
1660 * capability field when associating/joining to a BSS:
1661 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1662 */
1663 #define CAPINFO_MASK (~(0xda00))
1664
1665
1666 static void lbs_join_post(struct lbs_private *priv,
1667 struct cfg80211_ibss_params *params,
1668 u8 *bssid, u16 capability)
1669 {
1670 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1671 2 + 4 + /* basic rates */
1672 2 + 1 + /* DS parameter */
1673 2 + 2 + /* atim */
1674 2 + 8]; /* extended rates */
1675 u8 *fake = fake_ie;
1676
1677 lbs_deb_enter(LBS_DEB_CFG80211);
1678
1679 /*
1680 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1681 * the real IE from the firmware. So we fabricate a fake IE based on
1682 * what the firmware actually sends (sniffed with wireshark).
1683 */
1684 /* Fake SSID IE */
1685 *fake++ = WLAN_EID_SSID;
1686 *fake++ = params->ssid_len;
1687 memcpy(fake, params->ssid, params->ssid_len);
1688 fake += params->ssid_len;
1689 /* Fake supported basic rates IE */
1690 *fake++ = WLAN_EID_SUPP_RATES;
1691 *fake++ = 4;
1692 *fake++ = 0x82;
1693 *fake++ = 0x84;
1694 *fake++ = 0x8b;
1695 *fake++ = 0x96;
1696 /* Fake DS channel IE */
1697 *fake++ = WLAN_EID_DS_PARAMS;
1698 *fake++ = 1;
1699 *fake++ = params->channel->hw_value;
1700 /* Fake IBSS params IE */
1701 *fake++ = WLAN_EID_IBSS_PARAMS;
1702 *fake++ = 2;
1703 *fake++ = 0; /* ATIM=0 */
1704 *fake++ = 0;
1705 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1706 * but I don't know how this could be checked */
1707 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1708 *fake++ = 8;
1709 *fake++ = 0x0c;
1710 *fake++ = 0x12;
1711 *fake++ = 0x18;
1712 *fake++ = 0x24;
1713 *fake++ = 0x30;
1714 *fake++ = 0x48;
1715 *fake++ = 0x60;
1716 *fake++ = 0x6c;
1717 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1718
1719 cfg80211_inform_bss(priv->wdev->wiphy,
1720 params->channel,
1721 bssid,
1722 0,
1723 capability,
1724 params->beacon_interval,
1725 fake_ie, fake - fake_ie,
1726 0, GFP_KERNEL);
1727
1728 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1729 priv->wdev->ssid_len = params->ssid_len;
1730
1731 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1732
1733 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1734 priv->connect_status = LBS_CONNECTED;
1735 netif_carrier_on(priv->dev);
1736 if (!priv->tx_pending_len)
1737 netif_wake_queue(priv->dev);
1738
1739 lbs_deb_leave(LBS_DEB_CFG80211);
1740 }
1741
1742 static int lbs_ibss_join_existing(struct lbs_private *priv,
1743 struct cfg80211_ibss_params *params,
1744 struct cfg80211_bss *bss)
1745 {
1746 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1747 struct cmd_ds_802_11_ad_hoc_join cmd;
1748 u8 preamble = RADIO_PREAMBLE_SHORT;
1749 int ret = 0;
1750
1751 lbs_deb_enter(LBS_DEB_CFG80211);
1752
1753 /* TODO: set preamble based on scan result */
1754 ret = lbs_set_radio(priv, preamble, 1);
1755 if (ret)
1756 goto out;
1757
1758 /*
1759 * Example CMD_802_11_AD_HOC_JOIN command:
1760 *
1761 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1762 * size 65 00
1763 * sequence xx xx
1764 * result 00 00
1765 * bssid 02 27 27 97 2f 96
1766 * ssid 49 42 53 53 00 00 00 00
1767 * 00 00 00 00 00 00 00 00
1768 * 00 00 00 00 00 00 00 00
1769 * 00 00 00 00 00 00 00 00
1770 * type 02 CMD_BSS_TYPE_IBSS
1771 * beacon period 64 00
1772 * dtim period 00
1773 * timestamp 00 00 00 00 00 00 00 00
1774 * localtime 00 00 00 00 00 00 00 00
1775 * IE DS 03
1776 * IE DS len 01
1777 * IE DS channel 01
1778 * reserveed 00 00 00 00
1779 * IE IBSS 06
1780 * IE IBSS len 02
1781 * IE IBSS atim 00 00
1782 * reserved 00 00 00 00
1783 * capability 02 00
1784 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1785 * fail timeout ff 00
1786 * probe delay 00 00
1787 */
1788 memset(&cmd, 0, sizeof(cmd));
1789 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1790
1791 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1792 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1793 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1794 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1795 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1796 cmd.bss.ds.header.len = 1;
1797 cmd.bss.ds.channel = params->channel->hw_value;
1798 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1799 cmd.bss.ibss.header.len = 2;
1800 cmd.bss.ibss.atimwindow = 0;
1801 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1802
1803 /* set rates to the intersection of our rates and the rates in the
1804 bss */
1805 if (!rates_eid) {
1806 lbs_add_rates(cmd.bss.rates);
1807 } else {
1808 int hw, i;
1809 u8 rates_max = rates_eid[1];
1810 u8 *rates = cmd.bss.rates;
1811 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1812 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1813 for (i = 0; i < rates_max; i++) {
1814 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1815 u8 rate = rates_eid[i+2];
1816 if (rate == 0x02 || rate == 0x04 ||
1817 rate == 0x0b || rate == 0x16)
1818 rate |= 0x80;
1819 *rates++ = rate;
1820 }
1821 }
1822 }
1823 }
1824
1825 /* Only v8 and below support setting this */
1826 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1827 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1828 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1829 }
1830 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1831 if (ret)
1832 goto out;
1833
1834 /*
1835 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1836 *
1837 * response 2c 80
1838 * size 09 00
1839 * sequence xx xx
1840 * result 00 00
1841 * reserved 00
1842 */
1843 lbs_join_post(priv, params, bss->bssid, bss->capability);
1844
1845 out:
1846 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1847 return ret;
1848 }
1849
1850
1851
1852 static int lbs_ibss_start_new(struct lbs_private *priv,
1853 struct cfg80211_ibss_params *params)
1854 {
1855 struct cmd_ds_802_11_ad_hoc_start cmd;
1856 struct cmd_ds_802_11_ad_hoc_result *resp =
1857 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1858 u8 preamble = RADIO_PREAMBLE_SHORT;
1859 int ret = 0;
1860 u16 capability;
1861
1862 lbs_deb_enter(LBS_DEB_CFG80211);
1863
1864 ret = lbs_set_radio(priv, preamble, 1);
1865 if (ret)
1866 goto out;
1867
1868 /*
1869 * Example CMD_802_11_AD_HOC_START command:
1870 *
1871 * command 2b 00 CMD_802_11_AD_HOC_START
1872 * size b1 00
1873 * sequence xx xx
1874 * result 00 00
1875 * ssid 54 45 53 54 00 00 00 00
1876 * 00 00 00 00 00 00 00 00
1877 * 00 00 00 00 00 00 00 00
1878 * 00 00 00 00 00 00 00 00
1879 * bss type 02
1880 * beacon period 64 00
1881 * dtim period 00
1882 * IE IBSS 06
1883 * IE IBSS len 02
1884 * IE IBSS atim 00 00
1885 * reserved 00 00 00 00
1886 * IE DS 03
1887 * IE DS len 01
1888 * IE DS channel 01
1889 * reserved 00 00 00 00
1890 * probe delay 00 00
1891 * capability 02 00
1892 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1893 * 0c 12 18 24 30 48 60 6c
1894 * padding 100 bytes
1895 */
1896 memset(&cmd, 0, sizeof(cmd));
1897 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1898 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1899 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1900 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1901 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1902 cmd.ibss.header.len = 2;
1903 cmd.ibss.atimwindow = 0;
1904 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1905 cmd.ds.header.len = 1;
1906 cmd.ds.channel = params->channel->hw_value;
1907 /* Only v8 and below support setting probe delay */
1908 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1909 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1910 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1911 capability = WLAN_CAPABILITY_IBSS;
1912 cmd.capability = cpu_to_le16(capability);
1913 lbs_add_rates(cmd.rates);
1914
1915
1916 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1917 if (ret)
1918 goto out;
1919
1920 /*
1921 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1922 *
1923 * response 2b 80
1924 * size 14 00
1925 * sequence xx xx
1926 * result 00 00
1927 * reserved 00
1928 * bssid 02 2b 7b 0f 86 0e
1929 */
1930 lbs_join_post(priv, params, resp->bssid, capability);
1931
1932 out:
1933 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1934 return ret;
1935 }
1936
1937
1938 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1939 struct cfg80211_ibss_params *params)
1940 {
1941 struct lbs_private *priv = wiphy_priv(wiphy);
1942 int ret = 0;
1943 struct cfg80211_bss *bss;
1944 DECLARE_SSID_BUF(ssid_buf);
1945
1946 lbs_deb_enter(LBS_DEB_CFG80211);
1947
1948 if (!params->channel) {
1949 ret = -ENOTSUPP;
1950 goto out;
1951 }
1952
1953 ret = lbs_set_channel(priv, params->channel->hw_value);
1954 if (ret)
1955 goto out;
1956
1957 /* Search if someone is beaconing. This assumes that the
1958 * bss list is populated already */
1959 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1960 params->ssid, params->ssid_len,
1961 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1962
1963 if (bss) {
1964 ret = lbs_ibss_join_existing(priv, params, bss);
1965 cfg80211_put_bss(bss);
1966 } else
1967 ret = lbs_ibss_start_new(priv, params);
1968
1969
1970 out:
1971 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1972 return ret;
1973 }
1974
1975
1976 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1977 {
1978 struct lbs_private *priv = wiphy_priv(wiphy);
1979 struct cmd_ds_802_11_ad_hoc_stop cmd;
1980 int ret = 0;
1981
1982 lbs_deb_enter(LBS_DEB_CFG80211);
1983
1984 memset(&cmd, 0, sizeof(cmd));
1985 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1986 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1987
1988 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1989 lbs_mac_event_disconnected(priv);
1990
1991 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1992 return ret;
1993 }
1994
1995
1996
1997
1998 /***************************************************************************
1999 * Initialization
2000 */
2001
2002 static struct cfg80211_ops lbs_cfg80211_ops = {
2003 .set_channel = lbs_cfg_set_channel,
2004 .scan = lbs_cfg_scan,
2005 .connect = lbs_cfg_connect,
2006 .disconnect = lbs_cfg_disconnect,
2007 .add_key = lbs_cfg_add_key,
2008 .del_key = lbs_cfg_del_key,
2009 .set_default_key = lbs_cfg_set_default_key,
2010 .get_station = lbs_cfg_get_station,
2011 .dump_survey = lbs_get_survey,
2012 .change_virtual_intf = lbs_change_intf,
2013 .join_ibss = lbs_join_ibss,
2014 .leave_ibss = lbs_leave_ibss,
2015 };
2016
2017
2018 /*
2019 * At this time lbs_private *priv doesn't even exist, so we just allocate
2020 * memory and don't initialize the wiphy further. This is postponed until we
2021 * can talk to the firmware and happens at registration time in
2022 * lbs_cfg_wiphy_register().
2023 */
2024 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2025 {
2026 int ret = 0;
2027 struct wireless_dev *wdev;
2028
2029 lbs_deb_enter(LBS_DEB_CFG80211);
2030
2031 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2032 if (!wdev) {
2033 dev_err(dev, "cannot allocate wireless device\n");
2034 return ERR_PTR(-ENOMEM);
2035 }
2036
2037 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2038 if (!wdev->wiphy) {
2039 dev_err(dev, "cannot allocate wiphy\n");
2040 ret = -ENOMEM;
2041 goto err_wiphy_new;
2042 }
2043
2044 lbs_deb_leave(LBS_DEB_CFG80211);
2045 return wdev;
2046
2047 err_wiphy_new:
2048 kfree(wdev);
2049 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2050 return ERR_PTR(ret);
2051 }
2052
2053
2054 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2055 {
2056 struct region_code_mapping {
2057 const char *cn;
2058 int code;
2059 };
2060
2061 /* Section 5.17.2 */
2062 static const struct region_code_mapping regmap[] = {
2063 {"US ", 0x10}, /* US FCC */
2064 {"CA ", 0x20}, /* Canada */
2065 {"EU ", 0x30}, /* ETSI */
2066 {"ES ", 0x31}, /* Spain */
2067 {"FR ", 0x32}, /* France */
2068 {"JP ", 0x40}, /* Japan */
2069 };
2070 size_t i;
2071
2072 lbs_deb_enter(LBS_DEB_CFG80211);
2073
2074 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2075 if (regmap[i].code == priv->regioncode) {
2076 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2077 break;
2078 }
2079
2080 lbs_deb_leave(LBS_DEB_CFG80211);
2081 }
2082
2083
2084 /*
2085 * This function get's called after lbs_setup_firmware() determined the
2086 * firmware capabities. So we can setup the wiphy according to our
2087 * hardware/firmware.
2088 */
2089 int lbs_cfg_register(struct lbs_private *priv)
2090 {
2091 struct wireless_dev *wdev = priv->wdev;
2092 int ret;
2093
2094 lbs_deb_enter(LBS_DEB_CFG80211);
2095
2096 wdev->wiphy->max_scan_ssids = 1;
2097 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2098
2099 wdev->wiphy->interface_modes =
2100 BIT(NL80211_IFTYPE_STATION) |
2101 BIT(NL80211_IFTYPE_ADHOC);
2102 if (lbs_rtap_supported(priv))
2103 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2104
2105 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2106
2107 /*
2108 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2109 * never seen a firmware without WPA
2110 */
2111 wdev->wiphy->cipher_suites = cipher_suites;
2112 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2113 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2114
2115 ret = wiphy_register(wdev->wiphy);
2116 if (ret < 0)
2117 lbs_pr_err("cannot register wiphy device\n");
2118
2119 priv->wiphy_registered = true;
2120
2121 ret = register_netdev(priv->dev);
2122 if (ret)
2123 lbs_pr_err("cannot register network device\n");
2124
2125 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2126
2127 lbs_cfg_set_regulatory_hint(priv);
2128
2129 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2130 return ret;
2131 }
2132
2133 int lbs_reg_notifier(struct wiphy *wiphy,
2134 struct regulatory_request *request)
2135 {
2136 struct lbs_private *priv = wiphy_priv(wiphy);
2137 int ret;
2138
2139 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2140 "callback for domain %c%c\n", request->alpha2[0],
2141 request->alpha2[1]);
2142
2143 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2144
2145 lbs_deb_leave(LBS_DEB_CFG80211);
2146 return ret;
2147 }
2148
2149 void lbs_scan_deinit(struct lbs_private *priv)
2150 {
2151 lbs_deb_enter(LBS_DEB_CFG80211);
2152 cancel_delayed_work_sync(&priv->scan_work);
2153 }
2154
2155
2156 void lbs_cfg_free(struct lbs_private *priv)
2157 {
2158 struct wireless_dev *wdev = priv->wdev;
2159
2160 lbs_deb_enter(LBS_DEB_CFG80211);
2161
2162 if (!wdev)
2163 return;
2164
2165 if (priv->wiphy_registered)
2166 wiphy_unregister(wdev->wiphy);
2167
2168 if (wdev->wiphy)
2169 wiphy_free(wdev->wiphy);
2170
2171 kfree(wdev);
2172 }
Linus' kernel tree