projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
nl80211: move scan API to wdev
[deliverable/linux.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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #include <linux/hardirq.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/slab.h>
15 #include <linux/ieee80211.h>
16 #include <net/cfg80211.h>
17 #include <asm/unaligned.h>
18
19 #include "decl.h"
20 #include "cfg.h"
21 #include "cmd.h"
22 #include "mesh.h"
23
24
25 #define CHAN2G(_channel, _freq, _flags) { \
26 .band = IEEE80211_BAND_2GHZ, \
27 .center_freq = (_freq), \
28 .hw_value = (_channel), \
29 .flags = (_flags), \
30 .max_antenna_gain = 0, \
31 .max_power = 30, \
32 }
33
34 static struct ieee80211_channel lbs_2ghz_channels[] = {
35 CHAN2G(1, 2412, 0),
36 CHAN2G(2, 2417, 0),
37 CHAN2G(3, 2422, 0),
38 CHAN2G(4, 2427, 0),
39 CHAN2G(5, 2432, 0),
40 CHAN2G(6, 2437, 0),
41 CHAN2G(7, 2442, 0),
42 CHAN2G(8, 2447, 0),
43 CHAN2G(9, 2452, 0),
44 CHAN2G(10, 2457, 0),
45 CHAN2G(11, 2462, 0),
46 CHAN2G(12, 2467, 0),
47 CHAN2G(13, 2472, 0),
48 CHAN2G(14, 2484, 0),
49 };
50
51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
52 .bitrate = (_rate), \
53 .hw_value = (_hw_value), \
54 .flags = (_flags), \
55 }
56
57
58 /* Table 6 in section 3.2.1.1 */
59 static struct ieee80211_rate lbs_rates[] = {
60 RATETAB_ENT(10, 0, 0),
61 RATETAB_ENT(20, 1, 0),
62 RATETAB_ENT(55, 2, 0),
63 RATETAB_ENT(110, 3, 0),
64 RATETAB_ENT(60, 9, 0),
65 RATETAB_ENT(90, 6, 0),
66 RATETAB_ENT(120, 7, 0),
67 RATETAB_ENT(180, 8, 0),
68 RATETAB_ENT(240, 9, 0),
69 RATETAB_ENT(360, 10, 0),
70 RATETAB_ENT(480, 11, 0),
71 RATETAB_ENT(540, 12, 0),
72 };
73
74 static struct ieee80211_supported_band lbs_band_2ghz = {
75 .channels = lbs_2ghz_channels,
76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
77 .bitrates = lbs_rates,
78 .n_bitrates = ARRAY_SIZE(lbs_rates),
79 };
80
81
82 static const u32 cipher_suites[] = {
83 WLAN_CIPHER_SUITE_WEP40,
84 WLAN_CIPHER_SUITE_WEP104,
85 WLAN_CIPHER_SUITE_TKIP,
86 WLAN_CIPHER_SUITE_CCMP,
87 };
88
89 /* Time to stay on the channel */
90 #define LBS_DWELL_PASSIVE 100
91 #define LBS_DWELL_ACTIVE 40
92
93
94 /***************************************************************************
95 * Misc utility functions
96 *
97 * TLVs are Marvell specific. They are very similar to IEs, they have the
98 * same structure: type, length, data*. The only difference: for IEs, the
99 * type and length are u8, but for TLVs they're __le16.
100 */
101
102 /*
103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
104 * in the firmware spec
105 */
106 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
107 {
108 int ret = -ENOTSUPP;
109
110 switch (auth_type) {
111 case NL80211_AUTHTYPE_OPEN_SYSTEM:
112 case NL80211_AUTHTYPE_SHARED_KEY:
113 ret = auth_type;
114 break;
115 case NL80211_AUTHTYPE_AUTOMATIC:
116 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
117 break;
118 case NL80211_AUTHTYPE_NETWORK_EAP:
119 ret = 0x80;
120 break;
121 default:
122 /* silence compiler */
123 break;
124 }
125 return ret;
126 }
127
128
129 /*
130 * Various firmware commands need the list of supported rates, but with
131 * the hight-bit set for basic rates
132 */
133 static int lbs_add_rates(u8 *rates)
134 {
135 size_t i;
136
137 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
138 u8 rate = lbs_rates[i].bitrate / 5;
139 if (rate == 0x02 || rate == 0x04 ||
140 rate == 0x0b || rate == 0x16)
141 rate |= 0x80;
142 rates[i] = rate;
143 }
144 return ARRAY_SIZE(lbs_rates);
145 }
146
147
148 /***************************************************************************
149 * TLV utility functions
150 *
151 * TLVs are Marvell specific. They are very similar to IEs, they have the
152 * same structure: type, length, data*. The only difference: for IEs, the
153 * type and length are u8, but for TLVs they're __le16.
154 */
155
156
157 /*
158 * Add ssid TLV
159 */
160 #define LBS_MAX_SSID_TLV_SIZE \
161 (sizeof(struct mrvl_ie_header) \
162 + IEEE80211_MAX_SSID_LEN)
163
164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
165 {
166 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
167
168 /*
169 * TLV-ID SSID 00 00
170 * length 06 00
171 * ssid 4d 4e 54 45 53 54
172 */
173 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
174 ssid_tlv->header.len = cpu_to_le16(ssid_len);
175 memcpy(ssid_tlv->ssid, ssid, ssid_len);
176 return sizeof(ssid_tlv->header) + ssid_len;
177 }
178
179
180 /*
181 * Add channel list TLV (section 8.4.2)
182 *
183 * Actual channel data comes from priv->wdev->wiphy->channels.
184 */
185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
186 (sizeof(struct mrvl_ie_header) \
187 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
188
189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
190 int last_channel, int active_scan)
191 {
192 int chanscanparamsize = sizeof(struct chanscanparamset) *
193 (last_channel - priv->scan_channel);
194
195 struct mrvl_ie_header *header = (void *) tlv;
196
197 /*
198 * TLV-ID CHANLIST 01 01
199 * length 0e 00
200 * channel 00 01 00 00 00 64 00
201 * radio type 00
202 * channel 01
203 * scan type 00
204 * min scan time 00 00
205 * max scan time 64 00
206 * channel 2 00 02 00 00 00 64 00
207 *
208 */
209
210 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
211 header->len = cpu_to_le16(chanscanparamsize);
212 tlv += sizeof(struct mrvl_ie_header);
213
214 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
215 last_channel); */
216 memset(tlv, 0, chanscanparamsize);
217
218 while (priv->scan_channel < last_channel) {
219 struct chanscanparamset *param = (void *) tlv;
220
221 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
222 param->channumber =
223 priv->scan_req->channels[priv->scan_channel]->hw_value;
224 if (active_scan) {
225 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
226 } else {
227 param->chanscanmode.passivescan = 1;
228 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
229 }
230 tlv += sizeof(struct chanscanparamset);
231 priv->scan_channel++;
232 }
233 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
234 }
235
236
237 /*
238 * Add rates TLV
239 *
240 * The rates are in lbs_bg_rates[], but for the 802.11b
241 * rates the high bit is set. We add this TLV only because
242 * there's a firmware which otherwise doesn't report all
243 * APs in range.
244 */
245 #define LBS_MAX_RATES_TLV_SIZE \
246 (sizeof(struct mrvl_ie_header) \
247 + (ARRAY_SIZE(lbs_rates)))
248
249 /* Adds a TLV with all rates the hardware supports */
250 static int lbs_add_supported_rates_tlv(u8 *tlv)
251 {
252 size_t i;
253 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
254
255 /*
256 * TLV-ID RATES 01 00
257 * length 0e 00
258 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
259 */
260 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
261 tlv += sizeof(rate_tlv->header);
262 i = lbs_add_rates(tlv);
263 tlv += i;
264 rate_tlv->header.len = cpu_to_le16(i);
265 return sizeof(rate_tlv->header) + i;
266 }
267
268 /* Add common rates from a TLV and return the new end of the TLV */
269 static u8 *
270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
271 {
272 int hw, ap, ap_max = ie[1];
273 u8 hw_rate;
274
275 /* Advance past IE header */
276 ie += 2;
277
278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
279
280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
281 hw_rate = lbs_rates[hw].bitrate / 5;
282 for (ap = 0; ap < ap_max; ap++) {
283 if (hw_rate == (ie[ap] & 0x7f)) {
284 *tlv++ = ie[ap];
285 *nrates = *nrates + 1;
286 }
287 }
288 }
289 return tlv;
290 }
291
292 /*
293 * Adds a TLV with all rates the hardware *and* BSS supports.
294 */
295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
296 {
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
299 int n = 0;
300
301 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
302 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
303
304 /*
305 * 01 00 TLV_TYPE_RATES
306 * 04 00 len
307 * 82 84 8b 96 rates
308 */
309 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
310 tlv += sizeof(rate_tlv->header);
311
312 /* Add basic rates */
313 if (rates_eid) {
314 tlv = add_ie_rates(tlv, rates_eid, &n);
315
316 /* Add extended rates, if any */
317 if (ext_rates_eid)
318 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
319 } else {
320 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
321 /* Fallback: add basic 802.11b rates */
322 *tlv++ = 0x82;
323 *tlv++ = 0x84;
324 *tlv++ = 0x8b;
325 *tlv++ = 0x96;
326 n = 4;
327 }
328
329 rate_tlv->header.len = cpu_to_le16(n);
330 return sizeof(rate_tlv->header) + n;
331 }
332
333
334 /*
335 * Add auth type TLV.
336 *
337 * This is only needed for newer firmware (V9 and up).
338 */
339 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
340 sizeof(struct mrvl_ie_auth_type)
341
342 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
343 {
344 struct mrvl_ie_auth_type *auth = (void *) tlv;
345
346 /*
347 * 1f 01 TLV_TYPE_AUTH_TYPE
348 * 01 00 len
349 * 01 auth type
350 */
351 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
352 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
353 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
354 return sizeof(*auth);
355 }
356
357
358 /*
359 * Add channel (phy ds) TLV
360 */
361 #define LBS_MAX_CHANNEL_TLV_SIZE \
362 sizeof(struct mrvl_ie_header)
363
364 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
365 {
366 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
367
368 /*
369 * 03 00 TLV_TYPE_PHY_DS
370 * 01 00 len
371 * 06 channel
372 */
373 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
374 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
375 ds->channel = channel;
376 return sizeof(*ds);
377 }
378
379
380 /*
381 * Add (empty) CF param TLV of the form:
382 */
383 #define LBS_MAX_CF_PARAM_TLV_SIZE \
384 sizeof(struct mrvl_ie_header)
385
386 static int lbs_add_cf_param_tlv(u8 *tlv)
387 {
388 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
389
390 /*
391 * 04 00 TLV_TYPE_CF
392 * 06 00 len
393 * 00 cfpcnt
394 * 00 cfpperiod
395 * 00 00 cfpmaxduration
396 * 00 00 cfpdurationremaining
397 */
398 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
399 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
400 return sizeof(*cf);
401 }
402
403 /*
404 * Add WPA TLV
405 */
406 #define LBS_MAX_WPA_TLV_SIZE \
407 (sizeof(struct mrvl_ie_header) \
408 + 128 /* TODO: I guessed the size */)
409
410 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
411 {
412 size_t tlv_len;
413
414 /*
415 * We need just convert an IE to an TLV. IEs use u8 for the header,
416 * u8 type
417 * u8 len
418 * u8[] data
419 * but TLVs use __le16 instead:
420 * __le16 type
421 * __le16 len
422 * u8[] data
423 */
424 *tlv++ = *ie++;
425 *tlv++ = 0;
426 tlv_len = *tlv++ = *ie++;
427 *tlv++ = 0;
428 while (tlv_len--)
429 *tlv++ = *ie++;
430 /* the TLV is two bytes larger than the IE */
431 return ie_len + 2;
432 }
433
434 /*
435 * Set Channel
436 */
437
438 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
439 struct ieee80211_channel *channel,
440 enum nl80211_channel_type channel_type)
441 {
442 struct lbs_private *priv = wiphy_priv(wiphy);
443 int ret = -ENOTSUPP;
444
445 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
446 channel->center_freq, channel_type);
447
448 if (channel_type != NL80211_CHAN_NO_HT)
449 goto out;
450
451 ret = lbs_set_channel(priv, channel->hw_value);
452
453 out:
454 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
455 return ret;
456 }
457
458 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
459 struct net_device *netdev,
460 struct ieee80211_channel *channel)
461 {
462 struct lbs_private *priv = wiphy_priv(wiphy);
463 int ret = -ENOTSUPP;
464
465 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
466 netdev_name(netdev), channel->center_freq);
467
468 if (netdev != priv->mesh_dev)
469 goto out;
470
471 ret = lbs_mesh_set_channel(priv, channel->hw_value);
472
473 out:
474 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
475 return ret;
476 }
477
478
479
480 /*
481 * Scanning
482 */
483
484 /*
485 * When scanning, the firmware doesn't send a nul packet with the power-safe
486 * bit to the AP. So we cannot stay away from our current channel too long,
487 * otherwise we loose data. So take a "nap" while scanning every other
488 * while.
489 */
490 #define LBS_SCAN_BEFORE_NAP 4
491
492
493 /*
494 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
495 * which isn't really an RSSI, as it becomes larger when moving away from
496 * the AP. Anyway, we need to convert that into mBm.
497 */
498 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
499 ((-(int)rssi + 3)*100)
500
501 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
502 struct cmd_header *resp)
503 {
504 struct cfg80211_bss *bss;
505 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
506 int bsssize;
507 const u8 *pos;
508 const u8 *tsfdesc;
509 int tsfsize;
510 int i;
511 int ret = -EILSEQ;
512
513 lbs_deb_enter(LBS_DEB_CFG80211);
514
515 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
516
517 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
518 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
519
520 if (scanresp->nr_sets == 0) {
521 ret = 0;
522 goto done;
523 }
524
525 /*
526 * The general layout of the scan response is described in chapter
527 * 5.7.1. Basically we have a common part, then any number of BSS
528 * descriptor sections. Finally we have section with the same number
529 * of TSFs.
530 *
531 * cmd_ds_802_11_scan_rsp
532 * cmd_header
533 * pos_size
534 * nr_sets
535 * bssdesc 1
536 * bssid
537 * rssi
538 * timestamp
539 * intvl
540 * capa
541 * IEs
542 * bssdesc 2
543 * bssdesc n
544 * MrvlIEtypes_TsfFimestamp_t
545 * TSF for BSS 1
546 * TSF for BSS 2
547 * TSF for BSS n
548 */
549
550 pos = scanresp->bssdesc_and_tlvbuffer;
551
552 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
553 scanresp->bssdescriptsize);
554
555 tsfdesc = pos + bsssize;
556 tsfsize = 4 + 8 * scanresp->nr_sets;
557 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
558
559 /* Validity check: we expect a Marvell-Local TLV */
560 i = get_unaligned_le16(tsfdesc);
561 tsfdesc += 2;
562 if (i != TLV_TYPE_TSFTIMESTAMP) {
563 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
564 goto done;
565 }
566
567 /*
568 * Validity check: the TLV holds TSF values with 8 bytes each, so
569 * the size in the TLV must match the nr_sets value
570 */
571 i = get_unaligned_le16(tsfdesc);
572 tsfdesc += 2;
573 if (i / 8 != scanresp->nr_sets) {
574 lbs_deb_scan("scan response: invalid number of TSF timestamp "
575 "sets (expected %d got %d)\n", scanresp->nr_sets,
576 i / 8);
577 goto done;
578 }
579
580 for (i = 0; i < scanresp->nr_sets; i++) {
581 const u8 *bssid;
582 const u8 *ie;
583 int left;
584 int ielen;
585 int rssi;
586 u16 intvl;
587 u16 capa;
588 int chan_no = -1;
589 const u8 *ssid = NULL;
590 u8 ssid_len = 0;
591 DECLARE_SSID_BUF(ssid_buf);
592
593 int len = get_unaligned_le16(pos);
594 pos += 2;
595
596 /* BSSID */
597 bssid = pos;
598 pos += ETH_ALEN;
599 /* RSSI */
600 rssi = *pos++;
601 /* Packet time stamp */
602 pos += 8;
603 /* Beacon interval */
604 intvl = get_unaligned_le16(pos);
605 pos += 2;
606 /* Capabilities */
607 capa = get_unaligned_le16(pos);
608 pos += 2;
609
610 /* To find out the channel, we must parse the IEs */
611 ie = pos;
612 /*
613 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
614 * interval, capabilities
615 */
616 ielen = left = len - (6 + 1 + 8 + 2 + 2);
617 while (left >= 2) {
618 u8 id, elen;
619 id = *pos++;
620 elen = *pos++;
621 left -= 2;
622 if (elen > left || elen == 0) {
623 lbs_deb_scan("scan response: invalid IE fmt\n");
624 goto done;
625 }
626
627 if (id == WLAN_EID_DS_PARAMS)
628 chan_no = *pos;
629 if (id == WLAN_EID_SSID) {
630 ssid = pos;
631 ssid_len = elen;
632 }
633 left -= elen;
634 pos += elen;
635 }
636
637 /* No channel, no luck */
638 if (chan_no != -1) {
639 struct wiphy *wiphy = priv->wdev->wiphy;
640 int freq = ieee80211_channel_to_frequency(chan_no,
641 IEEE80211_BAND_2GHZ);
642 struct ieee80211_channel *channel =
643 ieee80211_get_channel(wiphy, freq);
644
645 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
646 "%d dBm\n",
647 bssid, capa, chan_no,
648 print_ssid(ssid_buf, ssid, ssid_len),
649 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
650
651 if (channel &&
652 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
653 bss = cfg80211_inform_bss(wiphy, channel,
654 bssid, get_unaligned_le64(tsfdesc),
655 capa, intvl, ie, ielen,
656 LBS_SCAN_RSSI_TO_MBM(rssi),
657 GFP_KERNEL);
658 cfg80211_put_bss(bss);
659 }
660 } else
661 lbs_deb_scan("scan response: missing BSS channel IE\n");
662
663 tsfdesc += 8;
664 }
665 ret = 0;
666
667 done:
668 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
669 return ret;
670 }
671
672
673 /*
674 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
675 * TLV and a rates TLV. Determine the maximum size of them:
676 */
677 #define LBS_SCAN_MAX_CMD_SIZE \
678 (sizeof(struct cmd_ds_802_11_scan) \
679 + LBS_MAX_SSID_TLV_SIZE \
680 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
681 + LBS_MAX_RATES_TLV_SIZE)
682
683 /*
684 * Assumes priv->scan_req is initialized and valid
685 * Assumes priv->scan_channel is initialized
686 */
687 static void lbs_scan_worker(struct work_struct *work)
688 {
689 struct lbs_private *priv =
690 container_of(work, struct lbs_private, scan_work.work);
691 struct cmd_ds_802_11_scan *scan_cmd;
692 u8 *tlv; /* pointer into our current, growing TLV storage area */
693 int last_channel;
694 int running, carrier;
695
696 lbs_deb_enter(LBS_DEB_SCAN);
697
698 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
699 if (scan_cmd == NULL)
700 goto out_no_scan_cmd;
701
702 /* prepare fixed part of scan command */
703 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
704
705 /* stop network while we're away from our main channel */
706 running = !netif_queue_stopped(priv->dev);
707 carrier = netif_carrier_ok(priv->dev);
708 if (running)
709 netif_stop_queue(priv->dev);
710 if (carrier)
711 netif_carrier_off(priv->dev);
712
713 /* prepare fixed part of scan command */
714 tlv = scan_cmd->tlvbuffer;
715
716 /* add SSID TLV */
717 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
718 tlv += lbs_add_ssid_tlv(tlv,
719 priv->scan_req->ssids[0].ssid,
720 priv->scan_req->ssids[0].ssid_len);
721
722 /* add channel TLVs */
723 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
724 if (last_channel > priv->scan_req->n_channels)
725 last_channel = priv->scan_req->n_channels;
726 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
727 priv->scan_req->n_ssids);
728
729 /* add rates TLV */
730 tlv += lbs_add_supported_rates_tlv(tlv);
731
732 if (priv->scan_channel < priv->scan_req->n_channels) {
733 cancel_delayed_work(&priv->scan_work);
734 if (netif_running(priv->dev))
735 queue_delayed_work(priv->work_thread, &priv->scan_work,
736 msecs_to_jiffies(300));
737 }
738
739 /* This is the final data we are about to send */
740 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
741 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
742 sizeof(*scan_cmd));
743 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
744 tlv - scan_cmd->tlvbuffer);
745
746 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
747 le16_to_cpu(scan_cmd->hdr.size),
748 lbs_ret_scan, 0);
749
750 if (priv->scan_channel >= priv->scan_req->n_channels) {
751 /* Mark scan done */
752 cancel_delayed_work(&priv->scan_work);
753 lbs_scan_done(priv);
754 }
755
756 /* Restart network */
757 if (carrier)
758 netif_carrier_on(priv->dev);
759 if (running && !priv->tx_pending_len)
760 netif_wake_queue(priv->dev);
761
762 kfree(scan_cmd);
763
764 /* Wake up anything waiting on scan completion */
765 if (priv->scan_req == NULL) {
766 lbs_deb_scan("scan: waking up waiters\n");
767 wake_up_all(&priv->scan_q);
768 }
769
770 out_no_scan_cmd:
771 lbs_deb_leave(LBS_DEB_SCAN);
772 }
773
774 static void _internal_start_scan(struct lbs_private *priv, bool internal,
775 struct cfg80211_scan_request *request)
776 {
777 lbs_deb_enter(LBS_DEB_CFG80211);
778
779 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
780 request->n_ssids, request->n_channels, request->ie_len);
781
782 priv->scan_channel = 0;
783 priv->scan_req = request;
784 priv->internal_scan = internal;
785
786 queue_delayed_work(priv->work_thread, &priv->scan_work,
787 msecs_to_jiffies(50));
788
789 lbs_deb_leave(LBS_DEB_CFG80211);
790 }
791
792 /*
793 * Clean up priv->scan_req. Should be used to handle the allocation details.
794 */
795 void lbs_scan_done(struct lbs_private *priv)
796 {
797 WARN_ON(!priv->scan_req);
798
799 if (priv->internal_scan)
800 kfree(priv->scan_req);
801 else
802 cfg80211_scan_done(priv->scan_req, false);
803
804 priv->scan_req = NULL;
805 }
806
807 static int lbs_cfg_scan(struct wiphy *wiphy,
808 struct cfg80211_scan_request *request)
809 {
810 struct lbs_private *priv = wiphy_priv(wiphy);
811 int ret = 0;
812
813 lbs_deb_enter(LBS_DEB_CFG80211);
814
815 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
816 /* old scan request not yet processed */
817 ret = -EAGAIN;
818 goto out;
819 }
820
821 _internal_start_scan(priv, false, request);
822
823 if (priv->surpriseremoved)
824 ret = -EIO;
825
826 out:
827 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
828 return ret;
829 }
830
831
832
833
834 /*
835 * Events
836 */
837
838 void lbs_send_disconnect_notification(struct lbs_private *priv)
839 {
840 lbs_deb_enter(LBS_DEB_CFG80211);
841
842 cfg80211_disconnected(priv->dev,
843 0,
844 NULL, 0,
845 GFP_KERNEL);
846
847 lbs_deb_leave(LBS_DEB_CFG80211);
848 }
849
850 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
851 {
852 lbs_deb_enter(LBS_DEB_CFG80211);
853
854 cfg80211_michael_mic_failure(priv->dev,
855 priv->assoc_bss,
856 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
857 NL80211_KEYTYPE_GROUP :
858 NL80211_KEYTYPE_PAIRWISE,
859 -1,
860 NULL,
861 GFP_KERNEL);
862
863 lbs_deb_leave(LBS_DEB_CFG80211);
864 }
865
866
867
868
869 /*
870 * Connect/disconnect
871 */
872
873
874 /*
875 * This removes all WEP keys
876 */
877 static int lbs_remove_wep_keys(struct lbs_private *priv)
878 {
879 struct cmd_ds_802_11_set_wep cmd;
880 int ret;
881
882 lbs_deb_enter(LBS_DEB_CFG80211);
883
884 memset(&cmd, 0, sizeof(cmd));
885 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
886 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
887 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
888
889 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
890
891 lbs_deb_leave(LBS_DEB_CFG80211);
892 return ret;
893 }
894
895 /*
896 * Set WEP keys
897 */
898 static int lbs_set_wep_keys(struct lbs_private *priv)
899 {
900 struct cmd_ds_802_11_set_wep cmd;
901 int i;
902 int ret;
903
904 lbs_deb_enter(LBS_DEB_CFG80211);
905
906 /*
907 * command 13 00
908 * size 50 00
909 * sequence xx xx
910 * result 00 00
911 * action 02 00 ACT_ADD
912 * transmit key 00 00
913 * type for key 1 01 WEP40
914 * type for key 2 00
915 * type for key 3 00
916 * type for key 4 00
917 * key 1 39 39 39 39 39 00 00 00
918 * 00 00 00 00 00 00 00 00
919 * key 2 00 00 00 00 00 00 00 00
920 * 00 00 00 00 00 00 00 00
921 * key 3 00 00 00 00 00 00 00 00
922 * 00 00 00 00 00 00 00 00
923 * key 4 00 00 00 00 00 00 00 00
924 */
925 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
926 priv->wep_key_len[2] || priv->wep_key_len[3]) {
927 /* Only set wep keys if we have at least one of them */
928 memset(&cmd, 0, sizeof(cmd));
929 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
930 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
931 cmd.action = cpu_to_le16(CMD_ACT_ADD);
932
933 for (i = 0; i < 4; i++) {
934 switch (priv->wep_key_len[i]) {
935 case WLAN_KEY_LEN_WEP40:
936 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
937 break;
938 case WLAN_KEY_LEN_WEP104:
939 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
940 break;
941 default:
942 cmd.keytype[i] = 0;
943 break;
944 }
945 memcpy(cmd.keymaterial[i], priv->wep_key[i],
946 priv->wep_key_len[i]);
947 }
948
949 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
950 } else {
951 /* Otherwise remove all wep keys */
952 ret = lbs_remove_wep_keys(priv);
953 }
954
955 lbs_deb_leave(LBS_DEB_CFG80211);
956 return ret;
957 }
958
959
960 /*
961 * Enable/Disable RSN status
962 */
963 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
964 {
965 struct cmd_ds_802_11_enable_rsn cmd;
966 int ret;
967
968 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
969
970 /*
971 * cmd 2f 00
972 * size 0c 00
973 * sequence xx xx
974 * result 00 00
975 * action 01 00 ACT_SET
976 * enable 01 00
977 */
978 memset(&cmd, 0, sizeof(cmd));
979 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
980 cmd.action = cpu_to_le16(CMD_ACT_SET);
981 cmd.enable = cpu_to_le16(enable);
982
983 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
984
985 lbs_deb_leave(LBS_DEB_CFG80211);
986 return ret;
987 }
988
989
990 /*
991 * Set WPA/WPA key material
992 */
993
994 /*
995 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
996 * get rid of WEXT, this should go into host.h
997 */
998
999 struct cmd_key_material {
1000 struct cmd_header hdr;
1001
1002 __le16 action;
1003 struct MrvlIEtype_keyParamSet param;
1004 } __packed;
1005
1006 static int lbs_set_key_material(struct lbs_private *priv,
1007 int key_type,
1008 int key_info,
1009 u8 *key, u16 key_len)
1010 {
1011 struct cmd_key_material cmd;
1012 int ret;
1013
1014 lbs_deb_enter(LBS_DEB_CFG80211);
1015
1016 /*
1017 * Example for WPA (TKIP):
1018 *
1019 * cmd 5e 00
1020 * size 34 00
1021 * sequence xx xx
1022 * result 00 00
1023 * action 01 00
1024 * TLV type 00 01 key param
1025 * length 00 26
1026 * key type 01 00 TKIP
1027 * key info 06 00 UNICAST | ENABLED
1028 * key len 20 00
1029 * key 32 bytes
1030 */
1031 memset(&cmd, 0, sizeof(cmd));
1032 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1033 cmd.action = cpu_to_le16(CMD_ACT_SET);
1034 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1035 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1036 cmd.param.keytypeid = cpu_to_le16(key_type);
1037 cmd.param.keyinfo = cpu_to_le16(key_info);
1038 cmd.param.keylen = cpu_to_le16(key_len);
1039 if (key && key_len)
1040 memcpy(cmd.param.key, key, key_len);
1041
1042 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1043
1044 lbs_deb_leave(LBS_DEB_CFG80211);
1045 return ret;
1046 }
1047
1048
1049 /*
1050 * Sets the auth type (open, shared, etc) in the firmware. That
1051 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1052 * command doesn't send an authentication frame at all, it just
1053 * stores the auth_type.
1054 */
1055 static int lbs_set_authtype(struct lbs_private *priv,
1056 struct cfg80211_connect_params *sme)
1057 {
1058 struct cmd_ds_802_11_authenticate cmd;
1059 int ret;
1060
1061 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1062
1063 /*
1064 * cmd 11 00
1065 * size 19 00
1066 * sequence xx xx
1067 * result 00 00
1068 * BSS id 00 13 19 80 da 30
1069 * auth type 00
1070 * reserved 00 00 00 00 00 00 00 00 00 00
1071 */
1072 memset(&cmd, 0, sizeof(cmd));
1073 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1074 if (sme->bssid)
1075 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1076 /* convert auth_type */
1077 ret = lbs_auth_to_authtype(sme->auth_type);
1078 if (ret < 0)
1079 goto done;
1080
1081 cmd.authtype = ret;
1082 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1083
1084 done:
1085 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1086 return ret;
1087 }
1088
1089
1090 /*
1091 * Create association request
1092 */
1093 #define LBS_ASSOC_MAX_CMD_SIZE \
1094 (sizeof(struct cmd_ds_802_11_associate) \
1095 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1096 + LBS_MAX_SSID_TLV_SIZE \
1097 + LBS_MAX_CHANNEL_TLV_SIZE \
1098 + LBS_MAX_CF_PARAM_TLV_SIZE \
1099 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1100 + LBS_MAX_WPA_TLV_SIZE)
1101
1102 static int lbs_associate(struct lbs_private *priv,
1103 struct cfg80211_bss *bss,
1104 struct cfg80211_connect_params *sme)
1105 {
1106 struct cmd_ds_802_11_associate_response *resp;
1107 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1108 GFP_KERNEL);
1109 const u8 *ssid_eid;
1110 size_t len, resp_ie_len;
1111 int status;
1112 int ret;
1113 u8 *pos = &(cmd->iebuf[0]);
1114 u8 *tmp;
1115
1116 lbs_deb_enter(LBS_DEB_CFG80211);
1117
1118 if (!cmd) {
1119 ret = -ENOMEM;
1120 goto done;
1121 }
1122
1123 /*
1124 * cmd 50 00
1125 * length 34 00
1126 * sequence xx xx
1127 * result 00 00
1128 * BSS id 00 13 19 80 da 30
1129 * capabilities 11 00
1130 * listen interval 0a 00
1131 * beacon interval 00 00
1132 * DTIM period 00
1133 * TLVs xx (up to 512 bytes)
1134 */
1135 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1136
1137 /* Fill in static fields */
1138 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1139 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1140 cmd->capability = cpu_to_le16(bss->capability);
1141
1142 /* add SSID TLV */
1143 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1144 if (ssid_eid)
1145 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1146 else
1147 lbs_deb_assoc("no SSID\n");
1148
1149 /* add DS param TLV */
1150 if (bss->channel)
1151 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1152 else
1153 lbs_deb_assoc("no channel\n");
1154
1155 /* add (empty) CF param TLV */
1156 pos += lbs_add_cf_param_tlv(pos);
1157
1158 /* add rates TLV */
1159 tmp = pos + 4; /* skip Marvell IE header */
1160 pos += lbs_add_common_rates_tlv(pos, bss);
1161 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1162
1163 /* add auth type TLV */
1164 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1165 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1166
1167 /* add WPA/WPA2 TLV */
1168 if (sme->ie && sme->ie_len)
1169 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1170
1171 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1172 (u16)(pos - (u8 *) &cmd->iebuf);
1173 cmd->hdr.size = cpu_to_le16(len);
1174
1175 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1176 le16_to_cpu(cmd->hdr.size));
1177
1178 /* store for later use */
1179 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1180
1181 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1182 if (ret)
1183 goto done;
1184
1185 /* generate connect message to cfg80211 */
1186
1187 resp = (void *) cmd; /* recast for easier field access */
1188 status = le16_to_cpu(resp->statuscode);
1189
1190 /* Older FW versions map the IEEE 802.11 Status Code in the association
1191 * response to the following values returned in resp->statuscode:
1192 *
1193 * IEEE Status Code Marvell Status Code
1194 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1195 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1196 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1197 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1198 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1199 * others -> 0x0003 ASSOC_RESULT_REFUSED
1200 *
1201 * Other response codes:
1202 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1203 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1204 * association response from the AP)
1205 */
1206 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1207 switch (status) {
1208 case 0:
1209 break;
1210 case 1:
1211 lbs_deb_assoc("invalid association parameters\n");
1212 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1213 break;
1214 case 2:
1215 lbs_deb_assoc("timer expired while waiting for AP\n");
1216 status = WLAN_STATUS_AUTH_TIMEOUT;
1217 break;
1218 case 3:
1219 lbs_deb_assoc("association refused by AP\n");
1220 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1221 break;
1222 case 4:
1223 lbs_deb_assoc("authentication refused by AP\n");
1224 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1225 break;
1226 default:
1227 lbs_deb_assoc("association failure %d\n", status);
1228 /* v5 OLPC firmware does return the AP status code if
1229 * it's not one of the values above. Let that through.
1230 */
1231 break;
1232 }
1233 }
1234
1235 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1236 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1237 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1238
1239 resp_ie_len = le16_to_cpu(resp->hdr.size)
1240 - sizeof(resp->hdr)
1241 - 6;
1242 cfg80211_connect_result(priv->dev,
1243 priv->assoc_bss,
1244 sme->ie, sme->ie_len,
1245 resp->iebuf, resp_ie_len,
1246 status,
1247 GFP_KERNEL);
1248
1249 if (status == 0) {
1250 /* TODO: get rid of priv->connect_status */
1251 priv->connect_status = LBS_CONNECTED;
1252 netif_carrier_on(priv->dev);
1253 if (!priv->tx_pending_len)
1254 netif_tx_wake_all_queues(priv->dev);
1255 }
1256
1257 done:
1258 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1259 return ret;
1260 }
1261
1262 static struct cfg80211_scan_request *
1263 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1264 {
1265 struct cfg80211_scan_request *creq = NULL;
1266 int i, n_channels = 0;
1267 enum ieee80211_band band;
1268
1269 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1270 if (wiphy->bands[band])
1271 n_channels += wiphy->bands[band]->n_channels;
1272 }
1273
1274 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1275 n_channels * sizeof(void *),
1276 GFP_ATOMIC);
1277 if (!creq)
1278 return NULL;
1279
1280 /* SSIDs come after channels */
1281 creq->ssids = (void *)&creq->channels[n_channels];
1282 creq->n_channels = n_channels;
1283 creq->n_ssids = 1;
1284
1285 /* Scan all available channels */
1286 i = 0;
1287 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1288 int j;
1289
1290 if (!wiphy->bands[band])
1291 continue;
1292
1293 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1294 /* ignore disabled channels */
1295 if (wiphy->bands[band]->channels[j].flags &
1296 IEEE80211_CHAN_DISABLED)
1297 continue;
1298
1299 creq->channels[i] = &wiphy->bands[band]->channels[j];
1300 i++;
1301 }
1302 }
1303 if (i) {
1304 /* Set real number of channels specified in creq->channels[] */
1305 creq->n_channels = i;
1306
1307 /* Scan for the SSID we're going to connect to */
1308 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1309 creq->ssids[0].ssid_len = sme->ssid_len;
1310 } else {
1311 /* No channels found... */
1312 kfree(creq);
1313 creq = NULL;
1314 }
1315
1316 return creq;
1317 }
1318
1319 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1320 struct cfg80211_connect_params *sme)
1321 {
1322 struct lbs_private *priv = wiphy_priv(wiphy);
1323 struct cfg80211_bss *bss = NULL;
1324 int ret = 0;
1325 u8 preamble = RADIO_PREAMBLE_SHORT;
1326
1327 if (dev == priv->mesh_dev)
1328 return -EOPNOTSUPP;
1329
1330 lbs_deb_enter(LBS_DEB_CFG80211);
1331
1332 if (!sme->bssid) {
1333 struct cfg80211_scan_request *creq;
1334
1335 /*
1336 * Scan for the requested network after waiting for existing
1337 * scans to finish.
1338 */
1339 lbs_deb_assoc("assoc: waiting for existing scans\n");
1340 wait_event_interruptible_timeout(priv->scan_q,
1341 (priv->scan_req == NULL),
1342 (15 * HZ));
1343
1344 creq = _new_connect_scan_req(wiphy, sme);
1345 if (!creq) {
1346 ret = -EINVAL;
1347 goto done;
1348 }
1349
1350 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1351 _internal_start_scan(priv, true, creq);
1352
1353 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1354 wait_event_interruptible_timeout(priv->scan_q,
1355 (priv->scan_req == NULL),
1356 (15 * HZ));
1357 lbs_deb_assoc("assoc: scanning competed\n");
1358 }
1359
1360 /* Find the BSS we want using available scan results */
1361 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1362 sme->ssid, sme->ssid_len,
1363 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1364 if (!bss) {
1365 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1366 sme->bssid);
1367 ret = -ENOENT;
1368 goto done;
1369 }
1370 lbs_deb_assoc("trying %pM\n", bss->bssid);
1371 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1372 sme->crypto.cipher_group,
1373 sme->key_idx, sme->key_len);
1374
1375 /* As this is a new connection, clear locally stored WEP keys */
1376 priv->wep_tx_key = 0;
1377 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1378 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1379
1380 /* set/remove WEP keys */
1381 switch (sme->crypto.cipher_group) {
1382 case WLAN_CIPHER_SUITE_WEP40:
1383 case WLAN_CIPHER_SUITE_WEP104:
1384 /* Store provided WEP keys in priv-> */
1385 priv->wep_tx_key = sme->key_idx;
1386 priv->wep_key_len[sme->key_idx] = sme->key_len;
1387 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1388 /* Set WEP keys and WEP mode */
1389 lbs_set_wep_keys(priv);
1390 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1391 lbs_set_mac_control(priv);
1392 /* No RSN mode for WEP */
1393 lbs_enable_rsn(priv, 0);
1394 break;
1395 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1396 /*
1397 * If we don't have no WEP, no WPA and no WPA2,
1398 * we remove all keys like in the WPA/WPA2 setup,
1399 * we just don't set RSN.
1400 *
1401 * Therefore: fall-through
1402 */
1403 case WLAN_CIPHER_SUITE_TKIP:
1404 case WLAN_CIPHER_SUITE_CCMP:
1405 /* Remove WEP keys and WEP mode */
1406 lbs_remove_wep_keys(priv);
1407 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1408 lbs_set_mac_control(priv);
1409
1410 /* clear the WPA/WPA2 keys */
1411 lbs_set_key_material(priv,
1412 KEY_TYPE_ID_WEP, /* doesn't matter */
1413 KEY_INFO_WPA_UNICAST,
1414 NULL, 0);
1415 lbs_set_key_material(priv,
1416 KEY_TYPE_ID_WEP, /* doesn't matter */
1417 KEY_INFO_WPA_MCAST,
1418 NULL, 0);
1419 /* RSN mode for WPA/WPA2 */
1420 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1421 break;
1422 default:
1423 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1424 sme->crypto.cipher_group);
1425 ret = -ENOTSUPP;
1426 goto done;
1427 }
1428
1429 ret = lbs_set_authtype(priv, sme);
1430 if (ret == -ENOTSUPP) {
1431 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1432 goto done;
1433 }
1434
1435 lbs_set_radio(priv, preamble, 1);
1436
1437 /* Do the actual association */
1438 ret = lbs_associate(priv, bss, sme);
1439
1440 done:
1441 if (bss)
1442 cfg80211_put_bss(bss);
1443 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1444 return ret;
1445 }
1446
1447 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1448 {
1449 struct cmd_ds_802_11_deauthenticate cmd;
1450 int ret;
1451
1452 memset(&cmd, 0, sizeof(cmd));
1453 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1454 /* Mildly ugly to use a locally store my own BSSID ... */
1455 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1456 cmd.reasoncode = cpu_to_le16(reason);
1457
1458 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1459 if (ret)
1460 return ret;
1461
1462 cfg80211_disconnected(priv->dev,
1463 reason,
1464 NULL, 0,
1465 GFP_KERNEL);
1466 priv->connect_status = LBS_DISCONNECTED;
1467
1468 return 0;
1469 }
1470
1471 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1472 u16 reason_code)
1473 {
1474 struct lbs_private *priv = wiphy_priv(wiphy);
1475
1476 if (dev == priv->mesh_dev)
1477 return -EOPNOTSUPP;
1478
1479 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1480
1481 /* store for lbs_cfg_ret_disconnect() */
1482 priv->disassoc_reason = reason_code;
1483
1484 return lbs_disconnect(priv, reason_code);
1485 }
1486
1487 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1488 struct net_device *netdev,
1489 u8 key_index, bool unicast,
1490 bool multicast)
1491 {
1492 struct lbs_private *priv = wiphy_priv(wiphy);
1493
1494 if (netdev == priv->mesh_dev)
1495 return -EOPNOTSUPP;
1496
1497 lbs_deb_enter(LBS_DEB_CFG80211);
1498
1499 if (key_index != priv->wep_tx_key) {
1500 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1501 priv->wep_tx_key = key_index;
1502 lbs_set_wep_keys(priv);
1503 }
1504
1505 return 0;
1506 }
1507
1508
1509 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1510 u8 idx, bool pairwise, const u8 *mac_addr,
1511 struct key_params *params)
1512 {
1513 struct lbs_private *priv = wiphy_priv(wiphy);
1514 u16 key_info;
1515 u16 key_type;
1516 int ret = 0;
1517
1518 if (netdev == priv->mesh_dev)
1519 return -EOPNOTSUPP;
1520
1521 lbs_deb_enter(LBS_DEB_CFG80211);
1522
1523 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1524 params->cipher, mac_addr);
1525 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1526 idx, params->key_len);
1527 if (params->key_len)
1528 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1529 params->key, params->key_len);
1530
1531 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1532 if (params->seq_len)
1533 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1534 params->seq, params->seq_len);
1535
1536 switch (params->cipher) {
1537 case WLAN_CIPHER_SUITE_WEP40:
1538 case WLAN_CIPHER_SUITE_WEP104:
1539 /* actually compare if something has changed ... */
1540 if ((priv->wep_key_len[idx] != params->key_len) ||
1541 memcmp(priv->wep_key[idx],
1542 params->key, params->key_len) != 0) {
1543 priv->wep_key_len[idx] = params->key_len;
1544 memcpy(priv->wep_key[idx],
1545 params->key, params->key_len);
1546 lbs_set_wep_keys(priv);
1547 }
1548 break;
1549 case WLAN_CIPHER_SUITE_TKIP:
1550 case WLAN_CIPHER_SUITE_CCMP:
1551 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1552 ? KEY_INFO_WPA_UNICAST
1553 : KEY_INFO_WPA_MCAST);
1554 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1555 ? KEY_TYPE_ID_TKIP
1556 : KEY_TYPE_ID_AES;
1557 lbs_set_key_material(priv,
1558 key_type,
1559 key_info,
1560 params->key, params->key_len);
1561 break;
1562 default:
1563 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1564 ret = -ENOTSUPP;
1565 break;
1566 }
1567
1568 return ret;
1569 }
1570
1571
1572 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1573 u8 key_index, bool pairwise, const u8 *mac_addr)
1574 {
1575
1576 lbs_deb_enter(LBS_DEB_CFG80211);
1577
1578 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1579 key_index, mac_addr);
1580
1581 #ifdef TODO
1582 struct lbs_private *priv = wiphy_priv(wiphy);
1583 /*
1584 * I think can keep this a NO-OP, because:
1585
1586 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1587 * - neither "iw" nor "wpa_supplicant" won't call this during
1588 * an ongoing connection
1589 * - TODO: but I have to check if this is still true when
1590 * I set the AP to periodic re-keying
1591 * - we've not kzallec() something when we've added a key at
1592 * lbs_cfg_connect() or lbs_cfg_add_key().
1593 *
1594 * This causes lbs_cfg_del_key() only called at disconnect time,
1595 * where we'd just waste time deleting a key that is not going
1596 * to be used anyway.
1597 */
1598 if (key_index < 3 && priv->wep_key_len[key_index]) {
1599 priv->wep_key_len[key_index] = 0;
1600 lbs_set_wep_keys(priv);
1601 }
1602 #endif
1603
1604 return 0;
1605 }
1606
1607
1608 /*
1609 * Get station
1610 */
1611
1612 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1613 u8 *mac, struct station_info *sinfo)
1614 {
1615 struct lbs_private *priv = wiphy_priv(wiphy);
1616 s8 signal, noise;
1617 int ret;
1618 size_t i;
1619
1620 lbs_deb_enter(LBS_DEB_CFG80211);
1621
1622 sinfo->filled |= STATION_INFO_TX_BYTES |
1623 STATION_INFO_TX_PACKETS |
1624 STATION_INFO_RX_BYTES |
1625 STATION_INFO_RX_PACKETS;
1626 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1627 sinfo->tx_packets = priv->dev->stats.tx_packets;
1628 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1629 sinfo->rx_packets = priv->dev->stats.rx_packets;
1630
1631 /* Get current RSSI */
1632 ret = lbs_get_rssi(priv, &signal, &noise);
1633 if (ret == 0) {
1634 sinfo->signal = signal;
1635 sinfo->filled |= STATION_INFO_SIGNAL;
1636 }
1637
1638 /* Convert priv->cur_rate from hw_value to NL80211 value */
1639 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1640 if (priv->cur_rate == lbs_rates[i].hw_value) {
1641 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1642 sinfo->filled |= STATION_INFO_TX_BITRATE;
1643 break;
1644 }
1645 }
1646
1647 return 0;
1648 }
1649
1650
1651
1652
1653 /*
1654 * Change interface
1655 */
1656
1657 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1658 enum nl80211_iftype type, u32 *flags,
1659 struct vif_params *params)
1660 {
1661 struct lbs_private *priv = wiphy_priv(wiphy);
1662 int ret = 0;
1663
1664 if (dev == priv->mesh_dev)
1665 return -EOPNOTSUPP;
1666
1667 switch (type) {
1668 case NL80211_IFTYPE_MONITOR:
1669 case NL80211_IFTYPE_STATION:
1670 case NL80211_IFTYPE_ADHOC:
1671 break;
1672 default:
1673 return -EOPNOTSUPP;
1674 }
1675
1676 lbs_deb_enter(LBS_DEB_CFG80211);
1677
1678 if (priv->iface_running)
1679 ret = lbs_set_iface_type(priv, type);
1680
1681 if (!ret)
1682 priv->wdev->iftype = type;
1683
1684 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1685 return ret;
1686 }
1687
1688
1689
1690 /*
1691 * IBSS (Ad-Hoc)
1692 */
1693
1694 /*
1695 * The firmware needs the following bits masked out of the beacon-derived
1696 * capability field when associating/joining to a BSS:
1697 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1698 */
1699 #define CAPINFO_MASK (~(0xda00))
1700
1701
1702 static void lbs_join_post(struct lbs_private *priv,
1703 struct cfg80211_ibss_params *params,
1704 u8 *bssid, u16 capability)
1705 {
1706 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1707 2 + 4 + /* basic rates */
1708 2 + 1 + /* DS parameter */
1709 2 + 2 + /* atim */
1710 2 + 8]; /* extended rates */
1711 u8 *fake = fake_ie;
1712 struct cfg80211_bss *bss;
1713
1714 lbs_deb_enter(LBS_DEB_CFG80211);
1715
1716 /*
1717 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1718 * the real IE from the firmware. So we fabricate a fake IE based on
1719 * what the firmware actually sends (sniffed with wireshark).
1720 */
1721 /* Fake SSID IE */
1722 *fake++ = WLAN_EID_SSID;
1723 *fake++ = params->ssid_len;
1724 memcpy(fake, params->ssid, params->ssid_len);
1725 fake += params->ssid_len;
1726 /* Fake supported basic rates IE */
1727 *fake++ = WLAN_EID_SUPP_RATES;
1728 *fake++ = 4;
1729 *fake++ = 0x82;
1730 *fake++ = 0x84;
1731 *fake++ = 0x8b;
1732 *fake++ = 0x96;
1733 /* Fake DS channel IE */
1734 *fake++ = WLAN_EID_DS_PARAMS;
1735 *fake++ = 1;
1736 *fake++ = params->channel->hw_value;
1737 /* Fake IBSS params IE */
1738 *fake++ = WLAN_EID_IBSS_PARAMS;
1739 *fake++ = 2;
1740 *fake++ = 0; /* ATIM=0 */
1741 *fake++ = 0;
1742 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1743 * but I don't know how this could be checked */
1744 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1745 *fake++ = 8;
1746 *fake++ = 0x0c;
1747 *fake++ = 0x12;
1748 *fake++ = 0x18;
1749 *fake++ = 0x24;
1750 *fake++ = 0x30;
1751 *fake++ = 0x48;
1752 *fake++ = 0x60;
1753 *fake++ = 0x6c;
1754 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1755
1756 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1757 params->channel,
1758 bssid,
1759 0,
1760 capability,
1761 params->beacon_interval,
1762 fake_ie, fake - fake_ie,
1763 0, GFP_KERNEL);
1764 cfg80211_put_bss(bss);
1765
1766 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1767 priv->wdev->ssid_len = params->ssid_len;
1768
1769 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1770
1771 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1772 priv->connect_status = LBS_CONNECTED;
1773 netif_carrier_on(priv->dev);
1774 if (!priv->tx_pending_len)
1775 netif_wake_queue(priv->dev);
1776
1777 lbs_deb_leave(LBS_DEB_CFG80211);
1778 }
1779
1780 static int lbs_ibss_join_existing(struct lbs_private *priv,
1781 struct cfg80211_ibss_params *params,
1782 struct cfg80211_bss *bss)
1783 {
1784 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1785 struct cmd_ds_802_11_ad_hoc_join cmd;
1786 u8 preamble = RADIO_PREAMBLE_SHORT;
1787 int ret = 0;
1788
1789 lbs_deb_enter(LBS_DEB_CFG80211);
1790
1791 /* TODO: set preamble based on scan result */
1792 ret = lbs_set_radio(priv, preamble, 1);
1793 if (ret)
1794 goto out;
1795
1796 /*
1797 * Example CMD_802_11_AD_HOC_JOIN command:
1798 *
1799 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1800 * size 65 00
1801 * sequence xx xx
1802 * result 00 00
1803 * bssid 02 27 27 97 2f 96
1804 * ssid 49 42 53 53 00 00 00 00
1805 * 00 00 00 00 00 00 00 00
1806 * 00 00 00 00 00 00 00 00
1807 * 00 00 00 00 00 00 00 00
1808 * type 02 CMD_BSS_TYPE_IBSS
1809 * beacon period 64 00
1810 * dtim period 00
1811 * timestamp 00 00 00 00 00 00 00 00
1812 * localtime 00 00 00 00 00 00 00 00
1813 * IE DS 03
1814 * IE DS len 01
1815 * IE DS channel 01
1816 * reserveed 00 00 00 00
1817 * IE IBSS 06
1818 * IE IBSS len 02
1819 * IE IBSS atim 00 00
1820 * reserved 00 00 00 00
1821 * capability 02 00
1822 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1823 * fail timeout ff 00
1824 * probe delay 00 00
1825 */
1826 memset(&cmd, 0, sizeof(cmd));
1827 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1828
1829 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1830 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1831 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1832 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1833 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1834 cmd.bss.ds.header.len = 1;
1835 cmd.bss.ds.channel = params->channel->hw_value;
1836 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1837 cmd.bss.ibss.header.len = 2;
1838 cmd.bss.ibss.atimwindow = 0;
1839 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1840
1841 /* set rates to the intersection of our rates and the rates in the
1842 bss */
1843 if (!rates_eid) {
1844 lbs_add_rates(cmd.bss.rates);
1845 } else {
1846 int hw, i;
1847 u8 rates_max = rates_eid[1];
1848 u8 *rates = cmd.bss.rates;
1849 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1850 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1851 for (i = 0; i < rates_max; i++) {
1852 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1853 u8 rate = rates_eid[i+2];
1854 if (rate == 0x02 || rate == 0x04 ||
1855 rate == 0x0b || rate == 0x16)
1856 rate |= 0x80;
1857 *rates++ = rate;
1858 }
1859 }
1860 }
1861 }
1862
1863 /* Only v8 and below support setting this */
1864 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1865 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1866 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1867 }
1868 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1869 if (ret)
1870 goto out;
1871
1872 /*
1873 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1874 *
1875 * response 2c 80
1876 * size 09 00
1877 * sequence xx xx
1878 * result 00 00
1879 * reserved 00
1880 */
1881 lbs_join_post(priv, params, bss->bssid, bss->capability);
1882
1883 out:
1884 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1885 return ret;
1886 }
1887
1888
1889
1890 static int lbs_ibss_start_new(struct lbs_private *priv,
1891 struct cfg80211_ibss_params *params)
1892 {
1893 struct cmd_ds_802_11_ad_hoc_start cmd;
1894 struct cmd_ds_802_11_ad_hoc_result *resp =
1895 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1896 u8 preamble = RADIO_PREAMBLE_SHORT;
1897 int ret = 0;
1898 u16 capability;
1899
1900 lbs_deb_enter(LBS_DEB_CFG80211);
1901
1902 ret = lbs_set_radio(priv, preamble, 1);
1903 if (ret)
1904 goto out;
1905
1906 /*
1907 * Example CMD_802_11_AD_HOC_START command:
1908 *
1909 * command 2b 00 CMD_802_11_AD_HOC_START
1910 * size b1 00
1911 * sequence xx xx
1912 * result 00 00
1913 * ssid 54 45 53 54 00 00 00 00
1914 * 00 00 00 00 00 00 00 00
1915 * 00 00 00 00 00 00 00 00
1916 * 00 00 00 00 00 00 00 00
1917 * bss type 02
1918 * beacon period 64 00
1919 * dtim period 00
1920 * IE IBSS 06
1921 * IE IBSS len 02
1922 * IE IBSS atim 00 00
1923 * reserved 00 00 00 00
1924 * IE DS 03
1925 * IE DS len 01
1926 * IE DS channel 01
1927 * reserved 00 00 00 00
1928 * probe delay 00 00
1929 * capability 02 00
1930 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1931 * 0c 12 18 24 30 48 60 6c
1932 * padding 100 bytes
1933 */
1934 memset(&cmd, 0, sizeof(cmd));
1935 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1936 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1937 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1938 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1939 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1940 cmd.ibss.header.len = 2;
1941 cmd.ibss.atimwindow = 0;
1942 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1943 cmd.ds.header.len = 1;
1944 cmd.ds.channel = params->channel->hw_value;
1945 /* Only v8 and below support setting probe delay */
1946 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1947 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1948 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1949 capability = WLAN_CAPABILITY_IBSS;
1950 cmd.capability = cpu_to_le16(capability);
1951 lbs_add_rates(cmd.rates);
1952
1953
1954 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1955 if (ret)
1956 goto out;
1957
1958 /*
1959 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1960 *
1961 * response 2b 80
1962 * size 14 00
1963 * sequence xx xx
1964 * result 00 00
1965 * reserved 00
1966 * bssid 02 2b 7b 0f 86 0e
1967 */
1968 lbs_join_post(priv, params, resp->bssid, capability);
1969
1970 out:
1971 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1972 return ret;
1973 }
1974
1975
1976 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1977 struct cfg80211_ibss_params *params)
1978 {
1979 struct lbs_private *priv = wiphy_priv(wiphy);
1980 int ret = 0;
1981 struct cfg80211_bss *bss;
1982 DECLARE_SSID_BUF(ssid_buf);
1983
1984 if (dev == priv->mesh_dev)
1985 return -EOPNOTSUPP;
1986
1987 lbs_deb_enter(LBS_DEB_CFG80211);
1988
1989 if (!params->channel) {
1990 ret = -ENOTSUPP;
1991 goto out;
1992 }
1993
1994 ret = lbs_set_channel(priv, params->channel->hw_value);
1995 if (ret)
1996 goto out;
1997
1998 /* Search if someone is beaconing. This assumes that the
1999 * bss list is populated already */
2000 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2001 params->ssid, params->ssid_len,
2002 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2003
2004 if (bss) {
2005 ret = lbs_ibss_join_existing(priv, params, bss);
2006 cfg80211_put_bss(bss);
2007 } else
2008 ret = lbs_ibss_start_new(priv, params);
2009
2010
2011 out:
2012 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2013 return ret;
2014 }
2015
2016
2017 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2018 {
2019 struct lbs_private *priv = wiphy_priv(wiphy);
2020 struct cmd_ds_802_11_ad_hoc_stop cmd;
2021 int ret = 0;
2022
2023 if (dev == priv->mesh_dev)
2024 return -EOPNOTSUPP;
2025
2026 lbs_deb_enter(LBS_DEB_CFG80211);
2027
2028 memset(&cmd, 0, sizeof(cmd));
2029 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2030 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2031
2032 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2033 lbs_mac_event_disconnected(priv);
2034
2035 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2036 return ret;
2037 }
2038
2039
2040
2041
2042 /*
2043 * Initialization
2044 */
2045
2046 static struct cfg80211_ops lbs_cfg80211_ops = {
2047 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2048 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2049 .scan = lbs_cfg_scan,
2050 .connect = lbs_cfg_connect,
2051 .disconnect = lbs_cfg_disconnect,
2052 .add_key = lbs_cfg_add_key,
2053 .del_key = lbs_cfg_del_key,
2054 .set_default_key = lbs_cfg_set_default_key,
2055 .get_station = lbs_cfg_get_station,
2056 .change_virtual_intf = lbs_change_intf,
2057 .join_ibss = lbs_join_ibss,
2058 .leave_ibss = lbs_leave_ibss,
2059 };
2060
2061
2062 /*
2063 * At this time lbs_private *priv doesn't even exist, so we just allocate
2064 * memory and don't initialize the wiphy further. This is postponed until we
2065 * can talk to the firmware and happens at registration time in
2066 * lbs_cfg_wiphy_register().
2067 */
2068 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2069 {
2070 int ret = 0;
2071 struct wireless_dev *wdev;
2072
2073 lbs_deb_enter(LBS_DEB_CFG80211);
2074
2075 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2076 if (!wdev) {
2077 dev_err(dev, "cannot allocate wireless device\n");
2078 return ERR_PTR(-ENOMEM);
2079 }
2080
2081 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2082 if (!wdev->wiphy) {
2083 dev_err(dev, "cannot allocate wiphy\n");
2084 ret = -ENOMEM;
2085 goto err_wiphy_new;
2086 }
2087
2088 lbs_deb_leave(LBS_DEB_CFG80211);
2089 return wdev;
2090
2091 err_wiphy_new:
2092 kfree(wdev);
2093 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2094 return ERR_PTR(ret);
2095 }
2096
2097
2098 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2099 {
2100 struct region_code_mapping {
2101 const char *cn;
2102 int code;
2103 };
2104
2105 /* Section 5.17.2 */
2106 static const struct region_code_mapping regmap[] = {
2107 {"US ", 0x10}, /* US FCC */
2108 {"CA ", 0x20}, /* Canada */
2109 {"EU ", 0x30}, /* ETSI */
2110 {"ES ", 0x31}, /* Spain */
2111 {"FR ", 0x32}, /* France */
2112 {"JP ", 0x40}, /* Japan */
2113 };
2114 size_t i;
2115
2116 lbs_deb_enter(LBS_DEB_CFG80211);
2117
2118 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2119 if (regmap[i].code == priv->regioncode) {
2120 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2121 break;
2122 }
2123
2124 lbs_deb_leave(LBS_DEB_CFG80211);
2125 }
2126
2127
2128 /*
2129 * This function get's called after lbs_setup_firmware() determined the
2130 * firmware capabities. So we can setup the wiphy according to our
2131 * hardware/firmware.
2132 */
2133 int lbs_cfg_register(struct lbs_private *priv)
2134 {
2135 struct wireless_dev *wdev = priv->wdev;
2136 int ret;
2137
2138 lbs_deb_enter(LBS_DEB_CFG80211);
2139
2140 wdev->wiphy->max_scan_ssids = 1;
2141 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2142
2143 wdev->wiphy->interface_modes =
2144 BIT(NL80211_IFTYPE_STATION) |
2145 BIT(NL80211_IFTYPE_ADHOC);
2146 if (lbs_rtap_supported(priv))
2147 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2148 if (lbs_mesh_activated(priv))
2149 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2150
2151 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2152
2153 /*
2154 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2155 * never seen a firmware without WPA
2156 */
2157 wdev->wiphy->cipher_suites = cipher_suites;
2158 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2159 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2160
2161 ret = wiphy_register(wdev->wiphy);
2162 if (ret < 0)
2163 pr_err("cannot register wiphy device\n");
2164
2165 priv->wiphy_registered = true;
2166
2167 ret = register_netdev(priv->dev);
2168 if (ret)
2169 pr_err("cannot register network device\n");
2170
2171 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2172
2173 lbs_cfg_set_regulatory_hint(priv);
2174
2175 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2176 return ret;
2177 }
2178
2179 int lbs_reg_notifier(struct wiphy *wiphy,
2180 struct regulatory_request *request)
2181 {
2182 struct lbs_private *priv = wiphy_priv(wiphy);
2183 int ret;
2184
2185 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2186 "callback for domain %c%c\n", request->alpha2[0],
2187 request->alpha2[1]);
2188
2189 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2190
2191 lbs_deb_leave(LBS_DEB_CFG80211);
2192 return ret;
2193 }
2194
2195 void lbs_scan_deinit(struct lbs_private *priv)
2196 {
2197 lbs_deb_enter(LBS_DEB_CFG80211);
2198 cancel_delayed_work_sync(&priv->scan_work);
2199 }
2200
2201
2202 void lbs_cfg_free(struct lbs_private *priv)
2203 {
2204 struct wireless_dev *wdev = priv->wdev;
2205
2206 lbs_deb_enter(LBS_DEB_CFG80211);
2207
2208 if (!wdev)
2209 return;
2210
2211 if (priv->wiphy_registered)
2212 wiphy_unregister(wdev->wiphy);
2213
2214 if (wdev->wiphy)
2215 wiphy_free(wdev->wiphy);
2216
2217 kfree(wdev);
2218 }
Linux kernel - Deliverables
This page took 0.085254 seconds and 5 git commands to generate.