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wireless: Remove unnecessary alloc/OOM messages, alloc cleanups
[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 rcu_read_lock();
302 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
303 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
304
305 /*
306 * 01 00 TLV_TYPE_RATES
307 * 04 00 len
308 * 82 84 8b 96 rates
309 */
310 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
311 tlv += sizeof(rate_tlv->header);
312
313 /* Add basic rates */
314 if (rates_eid) {
315 tlv = add_ie_rates(tlv, rates_eid, &n);
316
317 /* Add extended rates, if any */
318 if (ext_rates_eid)
319 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
320 } else {
321 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
322 /* Fallback: add basic 802.11b rates */
323 *tlv++ = 0x82;
324 *tlv++ = 0x84;
325 *tlv++ = 0x8b;
326 *tlv++ = 0x96;
327 n = 4;
328 }
329 rcu_read_unlock();
330
331 rate_tlv->header.len = cpu_to_le16(n);
332 return sizeof(rate_tlv->header) + n;
333 }
334
335
336 /*
337 * Add auth type TLV.
338 *
339 * This is only needed for newer firmware (V9 and up).
340 */
341 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
342 sizeof(struct mrvl_ie_auth_type)
343
344 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
345 {
346 struct mrvl_ie_auth_type *auth = (void *) tlv;
347
348 /*
349 * 1f 01 TLV_TYPE_AUTH_TYPE
350 * 01 00 len
351 * 01 auth type
352 */
353 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
354 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
355 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
356 return sizeof(*auth);
357 }
358
359
360 /*
361 * Add channel (phy ds) TLV
362 */
363 #define LBS_MAX_CHANNEL_TLV_SIZE \
364 sizeof(struct mrvl_ie_header)
365
366 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
367 {
368 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
369
370 /*
371 * 03 00 TLV_TYPE_PHY_DS
372 * 01 00 len
373 * 06 channel
374 */
375 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
376 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
377 ds->channel = channel;
378 return sizeof(*ds);
379 }
380
381
382 /*
383 * Add (empty) CF param TLV of the form:
384 */
385 #define LBS_MAX_CF_PARAM_TLV_SIZE \
386 sizeof(struct mrvl_ie_header)
387
388 static int lbs_add_cf_param_tlv(u8 *tlv)
389 {
390 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
391
392 /*
393 * 04 00 TLV_TYPE_CF
394 * 06 00 len
395 * 00 cfpcnt
396 * 00 cfpperiod
397 * 00 00 cfpmaxduration
398 * 00 00 cfpdurationremaining
399 */
400 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
401 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
402 return sizeof(*cf);
403 }
404
405 /*
406 * Add WPA TLV
407 */
408 #define LBS_MAX_WPA_TLV_SIZE \
409 (sizeof(struct mrvl_ie_header) \
410 + 128 /* TODO: I guessed the size */)
411
412 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
413 {
414 size_t tlv_len;
415
416 /*
417 * We need just convert an IE to an TLV. IEs use u8 for the header,
418 * u8 type
419 * u8 len
420 * u8[] data
421 * but TLVs use __le16 instead:
422 * __le16 type
423 * __le16 len
424 * u8[] data
425 */
426 *tlv++ = *ie++;
427 *tlv++ = 0;
428 tlv_len = *tlv++ = *ie++;
429 *tlv++ = 0;
430 while (tlv_len--)
431 *tlv++ = *ie++;
432 /* the TLV is two bytes larger than the IE */
433 return ie_len + 2;
434 }
435
436 /*
437 * Set Channel
438 */
439
440 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
441 struct cfg80211_chan_def *chandef)
442 {
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
447 chandef->chan->center_freq,
448 cfg80211_get_chandef_type(chandef));
449
450 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
451 goto out;
452
453 ret = lbs_set_channel(priv, chandef->chan->hw_value);
454
455 out:
456 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
457 return ret;
458 }
459
460 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
461 struct net_device *netdev,
462 struct ieee80211_channel *channel)
463 {
464 struct lbs_private *priv = wiphy_priv(wiphy);
465 int ret = -ENOTSUPP;
466
467 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
468 netdev_name(netdev), channel->center_freq);
469
470 if (netdev != priv->mesh_dev)
471 goto out;
472
473 ret = lbs_mesh_set_channel(priv, channel->hw_value);
474
475 out:
476 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
477 return ret;
478 }
479
480
481
482 /*
483 * Scanning
484 */
485
486 /*
487 * When scanning, the firmware doesn't send a nul packet with the power-safe
488 * bit to the AP. So we cannot stay away from our current channel too long,
489 * otherwise we loose data. So take a "nap" while scanning every other
490 * while.
491 */
492 #define LBS_SCAN_BEFORE_NAP 4
493
494
495 /*
496 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
497 * which isn't really an RSSI, as it becomes larger when moving away from
498 * the AP. Anyway, we need to convert that into mBm.
499 */
500 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
501 ((-(int)rssi + 3)*100)
502
503 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
504 struct cmd_header *resp)
505 {
506 struct cfg80211_bss *bss;
507 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
508 int bsssize;
509 const u8 *pos;
510 const u8 *tsfdesc;
511 int tsfsize;
512 int i;
513 int ret = -EILSEQ;
514
515 lbs_deb_enter(LBS_DEB_CFG80211);
516
517 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
518
519 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
520 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
521
522 if (scanresp->nr_sets == 0) {
523 ret = 0;
524 goto done;
525 }
526
527 /*
528 * The general layout of the scan response is described in chapter
529 * 5.7.1. Basically we have a common part, then any number of BSS
530 * descriptor sections. Finally we have section with the same number
531 * of TSFs.
532 *
533 * cmd_ds_802_11_scan_rsp
534 * cmd_header
535 * pos_size
536 * nr_sets
537 * bssdesc 1
538 * bssid
539 * rssi
540 * timestamp
541 * intvl
542 * capa
543 * IEs
544 * bssdesc 2
545 * bssdesc n
546 * MrvlIEtypes_TsfFimestamp_t
547 * TSF for BSS 1
548 * TSF for BSS 2
549 * TSF for BSS n
550 */
551
552 pos = scanresp->bssdesc_and_tlvbuffer;
553
554 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
555 scanresp->bssdescriptsize);
556
557 tsfdesc = pos + bsssize;
558 tsfsize = 4 + 8 * scanresp->nr_sets;
559 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
560
561 /* Validity check: we expect a Marvell-Local TLV */
562 i = get_unaligned_le16(tsfdesc);
563 tsfdesc += 2;
564 if (i != TLV_TYPE_TSFTIMESTAMP) {
565 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
566 goto done;
567 }
568
569 /*
570 * Validity check: the TLV holds TSF values with 8 bytes each, so
571 * the size in the TLV must match the nr_sets value
572 */
573 i = get_unaligned_le16(tsfdesc);
574 tsfdesc += 2;
575 if (i / 8 != scanresp->nr_sets) {
576 lbs_deb_scan("scan response: invalid number of TSF timestamp "
577 "sets (expected %d got %d)\n", scanresp->nr_sets,
578 i / 8);
579 goto done;
580 }
581
582 for (i = 0; i < scanresp->nr_sets; i++) {
583 const u8 *bssid;
584 const u8 *ie;
585 int left;
586 int ielen;
587 int rssi;
588 u16 intvl;
589 u16 capa;
590 int chan_no = -1;
591 const u8 *ssid = NULL;
592 u8 ssid_len = 0;
593 DECLARE_SSID_BUF(ssid_buf);
594
595 int len = get_unaligned_le16(pos);
596 pos += 2;
597
598 /* BSSID */
599 bssid = pos;
600 pos += ETH_ALEN;
601 /* RSSI */
602 rssi = *pos++;
603 /* Packet time stamp */
604 pos += 8;
605 /* Beacon interval */
606 intvl = get_unaligned_le16(pos);
607 pos += 2;
608 /* Capabilities */
609 capa = get_unaligned_le16(pos);
610 pos += 2;
611
612 /* To find out the channel, we must parse the IEs */
613 ie = pos;
614 /*
615 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
616 * interval, capabilities
617 */
618 ielen = left = len - (6 + 1 + 8 + 2 + 2);
619 while (left >= 2) {
620 u8 id, elen;
621 id = *pos++;
622 elen = *pos++;
623 left -= 2;
624 if (elen > left || elen == 0) {
625 lbs_deb_scan("scan response: invalid IE fmt\n");
626 goto done;
627 }
628
629 if (id == WLAN_EID_DS_PARAMS)
630 chan_no = *pos;
631 if (id == WLAN_EID_SSID) {
632 ssid = pos;
633 ssid_len = elen;
634 }
635 left -= elen;
636 pos += elen;
637 }
638
639 /* No channel, no luck */
640 if (chan_no != -1) {
641 struct wiphy *wiphy = priv->wdev->wiphy;
642 int freq = ieee80211_channel_to_frequency(chan_no,
643 IEEE80211_BAND_2GHZ);
644 struct ieee80211_channel *channel =
645 ieee80211_get_channel(wiphy, freq);
646
647 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
648 "%d dBm\n",
649 bssid, capa, chan_no,
650 print_ssid(ssid_buf, ssid, ssid_len),
651 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
652
653 if (channel &&
654 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
655 bss = cfg80211_inform_bss(wiphy, channel,
656 bssid, get_unaligned_le64(tsfdesc),
657 capa, intvl, ie, ielen,
658 LBS_SCAN_RSSI_TO_MBM(rssi),
659 GFP_KERNEL);
660 cfg80211_put_bss(bss);
661 }
662 } else
663 lbs_deb_scan("scan response: missing BSS channel IE\n");
664
665 tsfdesc += 8;
666 }
667 ret = 0;
668
669 done:
670 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
671 return ret;
672 }
673
674
675 /*
676 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
677 * TLV and a rates TLV. Determine the maximum size of them:
678 */
679 #define LBS_SCAN_MAX_CMD_SIZE \
680 (sizeof(struct cmd_ds_802_11_scan) \
681 + LBS_MAX_SSID_TLV_SIZE \
682 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
683 + LBS_MAX_RATES_TLV_SIZE)
684
685 /*
686 * Assumes priv->scan_req is initialized and valid
687 * Assumes priv->scan_channel is initialized
688 */
689 static void lbs_scan_worker(struct work_struct *work)
690 {
691 struct lbs_private *priv =
692 container_of(work, struct lbs_private, scan_work.work);
693 struct cmd_ds_802_11_scan *scan_cmd;
694 u8 *tlv; /* pointer into our current, growing TLV storage area */
695 int last_channel;
696 int running, carrier;
697
698 lbs_deb_enter(LBS_DEB_SCAN);
699
700 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
701 if (scan_cmd == NULL)
702 goto out_no_scan_cmd;
703
704 /* prepare fixed part of scan command */
705 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
706
707 /* stop network while we're away from our main channel */
708 running = !netif_queue_stopped(priv->dev);
709 carrier = netif_carrier_ok(priv->dev);
710 if (running)
711 netif_stop_queue(priv->dev);
712 if (carrier)
713 netif_carrier_off(priv->dev);
714
715 /* prepare fixed part of scan command */
716 tlv = scan_cmd->tlvbuffer;
717
718 /* add SSID TLV */
719 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
720 tlv += lbs_add_ssid_tlv(tlv,
721 priv->scan_req->ssids[0].ssid,
722 priv->scan_req->ssids[0].ssid_len);
723
724 /* add channel TLVs */
725 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
726 if (last_channel > priv->scan_req->n_channels)
727 last_channel = priv->scan_req->n_channels;
728 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
729 priv->scan_req->n_ssids);
730
731 /* add rates TLV */
732 tlv += lbs_add_supported_rates_tlv(tlv);
733
734 if (priv->scan_channel < priv->scan_req->n_channels) {
735 cancel_delayed_work(&priv->scan_work);
736 if (netif_running(priv->dev))
737 queue_delayed_work(priv->work_thread, &priv->scan_work,
738 msecs_to_jiffies(300));
739 }
740
741 /* This is the final data we are about to send */
742 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
743 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
744 sizeof(*scan_cmd));
745 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
746 tlv - scan_cmd->tlvbuffer);
747
748 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
749 le16_to_cpu(scan_cmd->hdr.size),
750 lbs_ret_scan, 0);
751
752 if (priv->scan_channel >= priv->scan_req->n_channels) {
753 /* Mark scan done */
754 cancel_delayed_work(&priv->scan_work);
755 lbs_scan_done(priv);
756 }
757
758 /* Restart network */
759 if (carrier)
760 netif_carrier_on(priv->dev);
761 if (running && !priv->tx_pending_len)
762 netif_wake_queue(priv->dev);
763
764 kfree(scan_cmd);
765
766 /* Wake up anything waiting on scan completion */
767 if (priv->scan_req == NULL) {
768 lbs_deb_scan("scan: waking up waiters\n");
769 wake_up_all(&priv->scan_q);
770 }
771
772 out_no_scan_cmd:
773 lbs_deb_leave(LBS_DEB_SCAN);
774 }
775
776 static void _internal_start_scan(struct lbs_private *priv, bool internal,
777 struct cfg80211_scan_request *request)
778 {
779 lbs_deb_enter(LBS_DEB_CFG80211);
780
781 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
782 request->n_ssids, request->n_channels, request->ie_len);
783
784 priv->scan_channel = 0;
785 priv->scan_req = request;
786 priv->internal_scan = internal;
787
788 queue_delayed_work(priv->work_thread, &priv->scan_work,
789 msecs_to_jiffies(50));
790
791 lbs_deb_leave(LBS_DEB_CFG80211);
792 }
793
794 /*
795 * Clean up priv->scan_req. Should be used to handle the allocation details.
796 */
797 void lbs_scan_done(struct lbs_private *priv)
798 {
799 WARN_ON(!priv->scan_req);
800
801 if (priv->internal_scan)
802 kfree(priv->scan_req);
803 else
804 cfg80211_scan_done(priv->scan_req, false);
805
806 priv->scan_req = NULL;
807 }
808
809 static int lbs_cfg_scan(struct wiphy *wiphy,
810 struct cfg80211_scan_request *request)
811 {
812 struct lbs_private *priv = wiphy_priv(wiphy);
813 int ret = 0;
814
815 lbs_deb_enter(LBS_DEB_CFG80211);
816
817 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
818 /* old scan request not yet processed */
819 ret = -EAGAIN;
820 goto out;
821 }
822
823 _internal_start_scan(priv, false, request);
824
825 if (priv->surpriseremoved)
826 ret = -EIO;
827
828 out:
829 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
830 return ret;
831 }
832
833
834
835
836 /*
837 * Events
838 */
839
840 void lbs_send_disconnect_notification(struct lbs_private *priv)
841 {
842 lbs_deb_enter(LBS_DEB_CFG80211);
843
844 cfg80211_disconnected(priv->dev,
845 0,
846 NULL, 0,
847 GFP_KERNEL);
848
849 lbs_deb_leave(LBS_DEB_CFG80211);
850 }
851
852 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
853 {
854 lbs_deb_enter(LBS_DEB_CFG80211);
855
856 cfg80211_michael_mic_failure(priv->dev,
857 priv->assoc_bss,
858 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
859 NL80211_KEYTYPE_GROUP :
860 NL80211_KEYTYPE_PAIRWISE,
861 -1,
862 NULL,
863 GFP_KERNEL);
864
865 lbs_deb_leave(LBS_DEB_CFG80211);
866 }
867
868
869
870
871 /*
872 * Connect/disconnect
873 */
874
875
876 /*
877 * This removes all WEP keys
878 */
879 static int lbs_remove_wep_keys(struct lbs_private *priv)
880 {
881 struct cmd_ds_802_11_set_wep cmd;
882 int ret;
883
884 lbs_deb_enter(LBS_DEB_CFG80211);
885
886 memset(&cmd, 0, sizeof(cmd));
887 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
888 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
889 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
890
891 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
892
893 lbs_deb_leave(LBS_DEB_CFG80211);
894 return ret;
895 }
896
897 /*
898 * Set WEP keys
899 */
900 static int lbs_set_wep_keys(struct lbs_private *priv)
901 {
902 struct cmd_ds_802_11_set_wep cmd;
903 int i;
904 int ret;
905
906 lbs_deb_enter(LBS_DEB_CFG80211);
907
908 /*
909 * command 13 00
910 * size 50 00
911 * sequence xx xx
912 * result 00 00
913 * action 02 00 ACT_ADD
914 * transmit key 00 00
915 * type for key 1 01 WEP40
916 * type for key 2 00
917 * type for key 3 00
918 * type for key 4 00
919 * key 1 39 39 39 39 39 00 00 00
920 * 00 00 00 00 00 00 00 00
921 * key 2 00 00 00 00 00 00 00 00
922 * 00 00 00 00 00 00 00 00
923 * key 3 00 00 00 00 00 00 00 00
924 * 00 00 00 00 00 00 00 00
925 * key 4 00 00 00 00 00 00 00 00
926 */
927 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
928 priv->wep_key_len[2] || priv->wep_key_len[3]) {
929 /* Only set wep keys if we have at least one of them */
930 memset(&cmd, 0, sizeof(cmd));
931 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
932 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
933 cmd.action = cpu_to_le16(CMD_ACT_ADD);
934
935 for (i = 0; i < 4; i++) {
936 switch (priv->wep_key_len[i]) {
937 case WLAN_KEY_LEN_WEP40:
938 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
939 break;
940 case WLAN_KEY_LEN_WEP104:
941 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
942 break;
943 default:
944 cmd.keytype[i] = 0;
945 break;
946 }
947 memcpy(cmd.keymaterial[i], priv->wep_key[i],
948 priv->wep_key_len[i]);
949 }
950
951 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
952 } else {
953 /* Otherwise remove all wep keys */
954 ret = lbs_remove_wep_keys(priv);
955 }
956
957 lbs_deb_leave(LBS_DEB_CFG80211);
958 return ret;
959 }
960
961
962 /*
963 * Enable/Disable RSN status
964 */
965 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
966 {
967 struct cmd_ds_802_11_enable_rsn cmd;
968 int ret;
969
970 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
971
972 /*
973 * cmd 2f 00
974 * size 0c 00
975 * sequence xx xx
976 * result 00 00
977 * action 01 00 ACT_SET
978 * enable 01 00
979 */
980 memset(&cmd, 0, sizeof(cmd));
981 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
982 cmd.action = cpu_to_le16(CMD_ACT_SET);
983 cmd.enable = cpu_to_le16(enable);
984
985 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
986
987 lbs_deb_leave(LBS_DEB_CFG80211);
988 return ret;
989 }
990
991
992 /*
993 * Set WPA/WPA key material
994 */
995
996 /*
997 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
998 * get rid of WEXT, this should go into host.h
999 */
1000
1001 struct cmd_key_material {
1002 struct cmd_header hdr;
1003
1004 __le16 action;
1005 struct MrvlIEtype_keyParamSet param;
1006 } __packed;
1007
1008 static int lbs_set_key_material(struct lbs_private *priv,
1009 int key_type,
1010 int key_info,
1011 u8 *key, u16 key_len)
1012 {
1013 struct cmd_key_material cmd;
1014 int ret;
1015
1016 lbs_deb_enter(LBS_DEB_CFG80211);
1017
1018 /*
1019 * Example for WPA (TKIP):
1020 *
1021 * cmd 5e 00
1022 * size 34 00
1023 * sequence xx xx
1024 * result 00 00
1025 * action 01 00
1026 * TLV type 00 01 key param
1027 * length 00 26
1028 * key type 01 00 TKIP
1029 * key info 06 00 UNICAST | ENABLED
1030 * key len 20 00
1031 * key 32 bytes
1032 */
1033 memset(&cmd, 0, sizeof(cmd));
1034 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1035 cmd.action = cpu_to_le16(CMD_ACT_SET);
1036 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1037 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1038 cmd.param.keytypeid = cpu_to_le16(key_type);
1039 cmd.param.keyinfo = cpu_to_le16(key_info);
1040 cmd.param.keylen = cpu_to_le16(key_len);
1041 if (key && key_len)
1042 memcpy(cmd.param.key, key, key_len);
1043
1044 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1045
1046 lbs_deb_leave(LBS_DEB_CFG80211);
1047 return ret;
1048 }
1049
1050
1051 /*
1052 * Sets the auth type (open, shared, etc) in the firmware. That
1053 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1054 * command doesn't send an authentication frame at all, it just
1055 * stores the auth_type.
1056 */
1057 static int lbs_set_authtype(struct lbs_private *priv,
1058 struct cfg80211_connect_params *sme)
1059 {
1060 struct cmd_ds_802_11_authenticate cmd;
1061 int ret;
1062
1063 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1064
1065 /*
1066 * cmd 11 00
1067 * size 19 00
1068 * sequence xx xx
1069 * result 00 00
1070 * BSS id 00 13 19 80 da 30
1071 * auth type 00
1072 * reserved 00 00 00 00 00 00 00 00 00 00
1073 */
1074 memset(&cmd, 0, sizeof(cmd));
1075 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1076 if (sme->bssid)
1077 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1078 /* convert auth_type */
1079 ret = lbs_auth_to_authtype(sme->auth_type);
1080 if (ret < 0)
1081 goto done;
1082
1083 cmd.authtype = ret;
1084 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1085
1086 done:
1087 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1088 return ret;
1089 }
1090
1091
1092 /*
1093 * Create association request
1094 */
1095 #define LBS_ASSOC_MAX_CMD_SIZE \
1096 (sizeof(struct cmd_ds_802_11_associate) \
1097 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1098 + LBS_MAX_SSID_TLV_SIZE \
1099 + LBS_MAX_CHANNEL_TLV_SIZE \
1100 + LBS_MAX_CF_PARAM_TLV_SIZE \
1101 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1102 + LBS_MAX_WPA_TLV_SIZE)
1103
1104 static int lbs_associate(struct lbs_private *priv,
1105 struct cfg80211_bss *bss,
1106 struct cfg80211_connect_params *sme)
1107 {
1108 struct cmd_ds_802_11_associate_response *resp;
1109 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1110 GFP_KERNEL);
1111 const u8 *ssid_eid;
1112 size_t len, resp_ie_len;
1113 int status;
1114 int ret;
1115 u8 *pos = &(cmd->iebuf[0]);
1116 u8 *tmp;
1117
1118 lbs_deb_enter(LBS_DEB_CFG80211);
1119
1120 if (!cmd) {
1121 ret = -ENOMEM;
1122 goto done;
1123 }
1124
1125 /*
1126 * cmd 50 00
1127 * length 34 00
1128 * sequence xx xx
1129 * result 00 00
1130 * BSS id 00 13 19 80 da 30
1131 * capabilities 11 00
1132 * listen interval 0a 00
1133 * beacon interval 00 00
1134 * DTIM period 00
1135 * TLVs xx (up to 512 bytes)
1136 */
1137 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1138
1139 /* Fill in static fields */
1140 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1141 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1142 cmd->capability = cpu_to_le16(bss->capability);
1143
1144 /* add SSID TLV */
1145 rcu_read_lock();
1146 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1147 if (ssid_eid)
1148 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1149 else
1150 lbs_deb_assoc("no SSID\n");
1151 rcu_read_unlock();
1152
1153 /* add DS param TLV */
1154 if (bss->channel)
1155 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1156 else
1157 lbs_deb_assoc("no channel\n");
1158
1159 /* add (empty) CF param TLV */
1160 pos += lbs_add_cf_param_tlv(pos);
1161
1162 /* add rates TLV */
1163 tmp = pos + 4; /* skip Marvell IE header */
1164 pos += lbs_add_common_rates_tlv(pos, bss);
1165 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1166
1167 /* add auth type TLV */
1168 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1169 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1170
1171 /* add WPA/WPA2 TLV */
1172 if (sme->ie && sme->ie_len)
1173 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1174
1175 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1176 (u16)(pos - (u8 *) &cmd->iebuf);
1177 cmd->hdr.size = cpu_to_le16(len);
1178
1179 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1180 le16_to_cpu(cmd->hdr.size));
1181
1182 /* store for later use */
1183 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1184
1185 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1186 if (ret)
1187 goto done;
1188
1189 /* generate connect message to cfg80211 */
1190
1191 resp = (void *) cmd; /* recast for easier field access */
1192 status = le16_to_cpu(resp->statuscode);
1193
1194 /* Older FW versions map the IEEE 802.11 Status Code in the association
1195 * response to the following values returned in resp->statuscode:
1196 *
1197 * IEEE Status Code Marvell Status Code
1198 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1199 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1200 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1201 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1202 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1203 * others -> 0x0003 ASSOC_RESULT_REFUSED
1204 *
1205 * Other response codes:
1206 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1207 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1208 * association response from the AP)
1209 */
1210 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1211 switch (status) {
1212 case 0:
1213 break;
1214 case 1:
1215 lbs_deb_assoc("invalid association parameters\n");
1216 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1217 break;
1218 case 2:
1219 lbs_deb_assoc("timer expired while waiting for AP\n");
1220 status = WLAN_STATUS_AUTH_TIMEOUT;
1221 break;
1222 case 3:
1223 lbs_deb_assoc("association refused by AP\n");
1224 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1225 break;
1226 case 4:
1227 lbs_deb_assoc("authentication refused by AP\n");
1228 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1229 break;
1230 default:
1231 lbs_deb_assoc("association failure %d\n", status);
1232 /* v5 OLPC firmware does return the AP status code if
1233 * it's not one of the values above. Let that through.
1234 */
1235 break;
1236 }
1237 }
1238
1239 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1240 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1241 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1242
1243 resp_ie_len = le16_to_cpu(resp->hdr.size)
1244 - sizeof(resp->hdr)
1245 - 6;
1246 cfg80211_connect_result(priv->dev,
1247 priv->assoc_bss,
1248 sme->ie, sme->ie_len,
1249 resp->iebuf, resp_ie_len,
1250 status,
1251 GFP_KERNEL);
1252
1253 if (status == 0) {
1254 /* TODO: get rid of priv->connect_status */
1255 priv->connect_status = LBS_CONNECTED;
1256 netif_carrier_on(priv->dev);
1257 if (!priv->tx_pending_len)
1258 netif_tx_wake_all_queues(priv->dev);
1259 }
1260
1261 kfree(cmd);
1262 done:
1263 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1264 return ret;
1265 }
1266
1267 static struct cfg80211_scan_request *
1268 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1269 {
1270 struct cfg80211_scan_request *creq = NULL;
1271 int i, n_channels = 0;
1272 enum ieee80211_band band;
1273
1274 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1275 if (wiphy->bands[band])
1276 n_channels += wiphy->bands[band]->n_channels;
1277 }
1278
1279 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1280 n_channels * sizeof(void *),
1281 GFP_ATOMIC);
1282 if (!creq)
1283 return NULL;
1284
1285 /* SSIDs come after channels */
1286 creq->ssids = (void *)&creq->channels[n_channels];
1287 creq->n_channels = n_channels;
1288 creq->n_ssids = 1;
1289
1290 /* Scan all available channels */
1291 i = 0;
1292 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1293 int j;
1294
1295 if (!wiphy->bands[band])
1296 continue;
1297
1298 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1299 /* ignore disabled channels */
1300 if (wiphy->bands[band]->channels[j].flags &
1301 IEEE80211_CHAN_DISABLED)
1302 continue;
1303
1304 creq->channels[i] = &wiphy->bands[band]->channels[j];
1305 i++;
1306 }
1307 }
1308 if (i) {
1309 /* Set real number of channels specified in creq->channels[] */
1310 creq->n_channels = i;
1311
1312 /* Scan for the SSID we're going to connect to */
1313 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1314 creq->ssids[0].ssid_len = sme->ssid_len;
1315 } else {
1316 /* No channels found... */
1317 kfree(creq);
1318 creq = NULL;
1319 }
1320
1321 return creq;
1322 }
1323
1324 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1325 struct cfg80211_connect_params *sme)
1326 {
1327 struct lbs_private *priv = wiphy_priv(wiphy);
1328 struct cfg80211_bss *bss = NULL;
1329 int ret = 0;
1330 u8 preamble = RADIO_PREAMBLE_SHORT;
1331
1332 if (dev == priv->mesh_dev)
1333 return -EOPNOTSUPP;
1334
1335 lbs_deb_enter(LBS_DEB_CFG80211);
1336
1337 if (!sme->bssid) {
1338 struct cfg80211_scan_request *creq;
1339
1340 /*
1341 * Scan for the requested network after waiting for existing
1342 * scans to finish.
1343 */
1344 lbs_deb_assoc("assoc: waiting for existing scans\n");
1345 wait_event_interruptible_timeout(priv->scan_q,
1346 (priv->scan_req == NULL),
1347 (15 * HZ));
1348
1349 creq = _new_connect_scan_req(wiphy, sme);
1350 if (!creq) {
1351 ret = -EINVAL;
1352 goto done;
1353 }
1354
1355 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1356 _internal_start_scan(priv, true, creq);
1357
1358 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1359 wait_event_interruptible_timeout(priv->scan_q,
1360 (priv->scan_req == NULL),
1361 (15 * HZ));
1362 lbs_deb_assoc("assoc: scanning competed\n");
1363 }
1364
1365 /* Find the BSS we want using available scan results */
1366 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1367 sme->ssid, sme->ssid_len,
1368 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1369 if (!bss) {
1370 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1371 sme->bssid);
1372 ret = -ENOENT;
1373 goto done;
1374 }
1375 lbs_deb_assoc("trying %pM\n", bss->bssid);
1376 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1377 sme->crypto.cipher_group,
1378 sme->key_idx, sme->key_len);
1379
1380 /* As this is a new connection, clear locally stored WEP keys */
1381 priv->wep_tx_key = 0;
1382 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1383 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1384
1385 /* set/remove WEP keys */
1386 switch (sme->crypto.cipher_group) {
1387 case WLAN_CIPHER_SUITE_WEP40:
1388 case WLAN_CIPHER_SUITE_WEP104:
1389 /* Store provided WEP keys in priv-> */
1390 priv->wep_tx_key = sme->key_idx;
1391 priv->wep_key_len[sme->key_idx] = sme->key_len;
1392 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1393 /* Set WEP keys and WEP mode */
1394 lbs_set_wep_keys(priv);
1395 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1396 lbs_set_mac_control(priv);
1397 /* No RSN mode for WEP */
1398 lbs_enable_rsn(priv, 0);
1399 break;
1400 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1401 /*
1402 * If we don't have no WEP, no WPA and no WPA2,
1403 * we remove all keys like in the WPA/WPA2 setup,
1404 * we just don't set RSN.
1405 *
1406 * Therefore: fall-through
1407 */
1408 case WLAN_CIPHER_SUITE_TKIP:
1409 case WLAN_CIPHER_SUITE_CCMP:
1410 /* Remove WEP keys and WEP mode */
1411 lbs_remove_wep_keys(priv);
1412 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1413 lbs_set_mac_control(priv);
1414
1415 /* clear the WPA/WPA2 keys */
1416 lbs_set_key_material(priv,
1417 KEY_TYPE_ID_WEP, /* doesn't matter */
1418 KEY_INFO_WPA_UNICAST,
1419 NULL, 0);
1420 lbs_set_key_material(priv,
1421 KEY_TYPE_ID_WEP, /* doesn't matter */
1422 KEY_INFO_WPA_MCAST,
1423 NULL, 0);
1424 /* RSN mode for WPA/WPA2 */
1425 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1426 break;
1427 default:
1428 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1429 sme->crypto.cipher_group);
1430 ret = -ENOTSUPP;
1431 goto done;
1432 }
1433
1434 ret = lbs_set_authtype(priv, sme);
1435 if (ret == -ENOTSUPP) {
1436 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1437 goto done;
1438 }
1439
1440 lbs_set_radio(priv, preamble, 1);
1441
1442 /* Do the actual association */
1443 ret = lbs_associate(priv, bss, sme);
1444
1445 done:
1446 if (bss)
1447 cfg80211_put_bss(bss);
1448 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1449 return ret;
1450 }
1451
1452 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1453 {
1454 struct cmd_ds_802_11_deauthenticate cmd;
1455 int ret;
1456
1457 memset(&cmd, 0, sizeof(cmd));
1458 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1459 /* Mildly ugly to use a locally store my own BSSID ... */
1460 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1461 cmd.reasoncode = cpu_to_le16(reason);
1462
1463 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1464 if (ret)
1465 return ret;
1466
1467 cfg80211_disconnected(priv->dev,
1468 reason,
1469 NULL, 0,
1470 GFP_KERNEL);
1471 priv->connect_status = LBS_DISCONNECTED;
1472
1473 return 0;
1474 }
1475
1476 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1477 u16 reason_code)
1478 {
1479 struct lbs_private *priv = wiphy_priv(wiphy);
1480
1481 if (dev == priv->mesh_dev)
1482 return -EOPNOTSUPP;
1483
1484 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1485
1486 /* store for lbs_cfg_ret_disconnect() */
1487 priv->disassoc_reason = reason_code;
1488
1489 return lbs_disconnect(priv, reason_code);
1490 }
1491
1492 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1493 struct net_device *netdev,
1494 u8 key_index, bool unicast,
1495 bool multicast)
1496 {
1497 struct lbs_private *priv = wiphy_priv(wiphy);
1498
1499 if (netdev == priv->mesh_dev)
1500 return -EOPNOTSUPP;
1501
1502 lbs_deb_enter(LBS_DEB_CFG80211);
1503
1504 if (key_index != priv->wep_tx_key) {
1505 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1506 priv->wep_tx_key = key_index;
1507 lbs_set_wep_keys(priv);
1508 }
1509
1510 return 0;
1511 }
1512
1513
1514 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1515 u8 idx, bool pairwise, const u8 *mac_addr,
1516 struct key_params *params)
1517 {
1518 struct lbs_private *priv = wiphy_priv(wiphy);
1519 u16 key_info;
1520 u16 key_type;
1521 int ret = 0;
1522
1523 if (netdev == priv->mesh_dev)
1524 return -EOPNOTSUPP;
1525
1526 lbs_deb_enter(LBS_DEB_CFG80211);
1527
1528 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1529 params->cipher, mac_addr);
1530 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1531 idx, params->key_len);
1532 if (params->key_len)
1533 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1534 params->key, params->key_len);
1535
1536 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1537 if (params->seq_len)
1538 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1539 params->seq, params->seq_len);
1540
1541 switch (params->cipher) {
1542 case WLAN_CIPHER_SUITE_WEP40:
1543 case WLAN_CIPHER_SUITE_WEP104:
1544 /* actually compare if something has changed ... */
1545 if ((priv->wep_key_len[idx] != params->key_len) ||
1546 memcmp(priv->wep_key[idx],
1547 params->key, params->key_len) != 0) {
1548 priv->wep_key_len[idx] = params->key_len;
1549 memcpy(priv->wep_key[idx],
1550 params->key, params->key_len);
1551 lbs_set_wep_keys(priv);
1552 }
1553 break;
1554 case WLAN_CIPHER_SUITE_TKIP:
1555 case WLAN_CIPHER_SUITE_CCMP:
1556 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1557 ? KEY_INFO_WPA_UNICAST
1558 : KEY_INFO_WPA_MCAST);
1559 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1560 ? KEY_TYPE_ID_TKIP
1561 : KEY_TYPE_ID_AES;
1562 lbs_set_key_material(priv,
1563 key_type,
1564 key_info,
1565 params->key, params->key_len);
1566 break;
1567 default:
1568 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1569 ret = -ENOTSUPP;
1570 break;
1571 }
1572
1573 return ret;
1574 }
1575
1576
1577 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1578 u8 key_index, bool pairwise, const u8 *mac_addr)
1579 {
1580
1581 lbs_deb_enter(LBS_DEB_CFG80211);
1582
1583 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1584 key_index, mac_addr);
1585
1586 #ifdef TODO
1587 struct lbs_private *priv = wiphy_priv(wiphy);
1588 /*
1589 * I think can keep this a NO-OP, because:
1590
1591 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1592 * - neither "iw" nor "wpa_supplicant" won't call this during
1593 * an ongoing connection
1594 * - TODO: but I have to check if this is still true when
1595 * I set the AP to periodic re-keying
1596 * - we've not kzallec() something when we've added a key at
1597 * lbs_cfg_connect() or lbs_cfg_add_key().
1598 *
1599 * This causes lbs_cfg_del_key() only called at disconnect time,
1600 * where we'd just waste time deleting a key that is not going
1601 * to be used anyway.
1602 */
1603 if (key_index < 3 && priv->wep_key_len[key_index]) {
1604 priv->wep_key_len[key_index] = 0;
1605 lbs_set_wep_keys(priv);
1606 }
1607 #endif
1608
1609 return 0;
1610 }
1611
1612
1613 /*
1614 * Get station
1615 */
1616
1617 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1618 u8 *mac, struct station_info *sinfo)
1619 {
1620 struct lbs_private *priv = wiphy_priv(wiphy);
1621 s8 signal, noise;
1622 int ret;
1623 size_t i;
1624
1625 lbs_deb_enter(LBS_DEB_CFG80211);
1626
1627 sinfo->filled |= STATION_INFO_TX_BYTES |
1628 STATION_INFO_TX_PACKETS |
1629 STATION_INFO_RX_BYTES |
1630 STATION_INFO_RX_PACKETS;
1631 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1632 sinfo->tx_packets = priv->dev->stats.tx_packets;
1633 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1634 sinfo->rx_packets = priv->dev->stats.rx_packets;
1635
1636 /* Get current RSSI */
1637 ret = lbs_get_rssi(priv, &signal, &noise);
1638 if (ret == 0) {
1639 sinfo->signal = signal;
1640 sinfo->filled |= STATION_INFO_SIGNAL;
1641 }
1642
1643 /* Convert priv->cur_rate from hw_value to NL80211 value */
1644 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1645 if (priv->cur_rate == lbs_rates[i].hw_value) {
1646 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1647 sinfo->filled |= STATION_INFO_TX_BITRATE;
1648 break;
1649 }
1650 }
1651
1652 return 0;
1653 }
1654
1655
1656
1657
1658 /*
1659 * Change interface
1660 */
1661
1662 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1663 enum nl80211_iftype type, u32 *flags,
1664 struct vif_params *params)
1665 {
1666 struct lbs_private *priv = wiphy_priv(wiphy);
1667 int ret = 0;
1668
1669 if (dev == priv->mesh_dev)
1670 return -EOPNOTSUPP;
1671
1672 switch (type) {
1673 case NL80211_IFTYPE_MONITOR:
1674 case NL80211_IFTYPE_STATION:
1675 case NL80211_IFTYPE_ADHOC:
1676 break;
1677 default:
1678 return -EOPNOTSUPP;
1679 }
1680
1681 lbs_deb_enter(LBS_DEB_CFG80211);
1682
1683 if (priv->iface_running)
1684 ret = lbs_set_iface_type(priv, type);
1685
1686 if (!ret)
1687 priv->wdev->iftype = type;
1688
1689 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1690 return ret;
1691 }
1692
1693
1694
1695 /*
1696 * IBSS (Ad-Hoc)
1697 */
1698
1699 /*
1700 * The firmware needs the following bits masked out of the beacon-derived
1701 * capability field when associating/joining to a BSS:
1702 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1703 */
1704 #define CAPINFO_MASK (~(0xda00))
1705
1706
1707 static void lbs_join_post(struct lbs_private *priv,
1708 struct cfg80211_ibss_params *params,
1709 u8 *bssid, u16 capability)
1710 {
1711 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1712 2 + 4 + /* basic rates */
1713 2 + 1 + /* DS parameter */
1714 2 + 2 + /* atim */
1715 2 + 8]; /* extended rates */
1716 u8 *fake = fake_ie;
1717 struct cfg80211_bss *bss;
1718
1719 lbs_deb_enter(LBS_DEB_CFG80211);
1720
1721 /*
1722 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1723 * the real IE from the firmware. So we fabricate a fake IE based on
1724 * what the firmware actually sends (sniffed with wireshark).
1725 */
1726 /* Fake SSID IE */
1727 *fake++ = WLAN_EID_SSID;
1728 *fake++ = params->ssid_len;
1729 memcpy(fake, params->ssid, params->ssid_len);
1730 fake += params->ssid_len;
1731 /* Fake supported basic rates IE */
1732 *fake++ = WLAN_EID_SUPP_RATES;
1733 *fake++ = 4;
1734 *fake++ = 0x82;
1735 *fake++ = 0x84;
1736 *fake++ = 0x8b;
1737 *fake++ = 0x96;
1738 /* Fake DS channel IE */
1739 *fake++ = WLAN_EID_DS_PARAMS;
1740 *fake++ = 1;
1741 *fake++ = params->chandef.chan->hw_value;
1742 /* Fake IBSS params IE */
1743 *fake++ = WLAN_EID_IBSS_PARAMS;
1744 *fake++ = 2;
1745 *fake++ = 0; /* ATIM=0 */
1746 *fake++ = 0;
1747 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1748 * but I don't know how this could be checked */
1749 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1750 *fake++ = 8;
1751 *fake++ = 0x0c;
1752 *fake++ = 0x12;
1753 *fake++ = 0x18;
1754 *fake++ = 0x24;
1755 *fake++ = 0x30;
1756 *fake++ = 0x48;
1757 *fake++ = 0x60;
1758 *fake++ = 0x6c;
1759 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1760
1761 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1762 params->chandef.chan,
1763 bssid,
1764 0,
1765 capability,
1766 params->beacon_interval,
1767 fake_ie, fake - fake_ie,
1768 0, GFP_KERNEL);
1769 cfg80211_put_bss(bss);
1770
1771 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1772 priv->wdev->ssid_len = params->ssid_len;
1773
1774 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1775
1776 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1777 priv->connect_status = LBS_CONNECTED;
1778 netif_carrier_on(priv->dev);
1779 if (!priv->tx_pending_len)
1780 netif_wake_queue(priv->dev);
1781
1782 lbs_deb_leave(LBS_DEB_CFG80211);
1783 }
1784
1785 static int lbs_ibss_join_existing(struct lbs_private *priv,
1786 struct cfg80211_ibss_params *params,
1787 struct cfg80211_bss *bss)
1788 {
1789 const u8 *rates_eid;
1790 struct cmd_ds_802_11_ad_hoc_join cmd;
1791 u8 preamble = RADIO_PREAMBLE_SHORT;
1792 int ret = 0;
1793
1794 lbs_deb_enter(LBS_DEB_CFG80211);
1795
1796 /* TODO: set preamble based on scan result */
1797 ret = lbs_set_radio(priv, preamble, 1);
1798 if (ret)
1799 goto out;
1800
1801 /*
1802 * Example CMD_802_11_AD_HOC_JOIN command:
1803 *
1804 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1805 * size 65 00
1806 * sequence xx xx
1807 * result 00 00
1808 * bssid 02 27 27 97 2f 96
1809 * ssid 49 42 53 53 00 00 00 00
1810 * 00 00 00 00 00 00 00 00
1811 * 00 00 00 00 00 00 00 00
1812 * 00 00 00 00 00 00 00 00
1813 * type 02 CMD_BSS_TYPE_IBSS
1814 * beacon period 64 00
1815 * dtim period 00
1816 * timestamp 00 00 00 00 00 00 00 00
1817 * localtime 00 00 00 00 00 00 00 00
1818 * IE DS 03
1819 * IE DS len 01
1820 * IE DS channel 01
1821 * reserveed 00 00 00 00
1822 * IE IBSS 06
1823 * IE IBSS len 02
1824 * IE IBSS atim 00 00
1825 * reserved 00 00 00 00
1826 * capability 02 00
1827 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1828 * fail timeout ff 00
1829 * probe delay 00 00
1830 */
1831 memset(&cmd, 0, sizeof(cmd));
1832 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1833
1834 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1835 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1836 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1837 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1838 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1839 cmd.bss.ds.header.len = 1;
1840 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1841 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1842 cmd.bss.ibss.header.len = 2;
1843 cmd.bss.ibss.atimwindow = 0;
1844 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1845
1846 /* set rates to the intersection of our rates and the rates in the
1847 bss */
1848 rcu_read_lock();
1849 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1850 if (!rates_eid) {
1851 lbs_add_rates(cmd.bss.rates);
1852 } else {
1853 int hw, i;
1854 u8 rates_max = rates_eid[1];
1855 u8 *rates = cmd.bss.rates;
1856 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1857 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1858 for (i = 0; i < rates_max; i++) {
1859 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1860 u8 rate = rates_eid[i+2];
1861 if (rate == 0x02 || rate == 0x04 ||
1862 rate == 0x0b || rate == 0x16)
1863 rate |= 0x80;
1864 *rates++ = rate;
1865 }
1866 }
1867 }
1868 }
1869 rcu_read_unlock();
1870
1871 /* Only v8 and below support setting this */
1872 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1873 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1874 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1875 }
1876 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1877 if (ret)
1878 goto out;
1879
1880 /*
1881 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1882 *
1883 * response 2c 80
1884 * size 09 00
1885 * sequence xx xx
1886 * result 00 00
1887 * reserved 00
1888 */
1889 lbs_join_post(priv, params, bss->bssid, bss->capability);
1890
1891 out:
1892 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1893 return ret;
1894 }
1895
1896
1897
1898 static int lbs_ibss_start_new(struct lbs_private *priv,
1899 struct cfg80211_ibss_params *params)
1900 {
1901 struct cmd_ds_802_11_ad_hoc_start cmd;
1902 struct cmd_ds_802_11_ad_hoc_result *resp =
1903 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1904 u8 preamble = RADIO_PREAMBLE_SHORT;
1905 int ret = 0;
1906 u16 capability;
1907
1908 lbs_deb_enter(LBS_DEB_CFG80211);
1909
1910 ret = lbs_set_radio(priv, preamble, 1);
1911 if (ret)
1912 goto out;
1913
1914 /*
1915 * Example CMD_802_11_AD_HOC_START command:
1916 *
1917 * command 2b 00 CMD_802_11_AD_HOC_START
1918 * size b1 00
1919 * sequence xx xx
1920 * result 00 00
1921 * ssid 54 45 53 54 00 00 00 00
1922 * 00 00 00 00 00 00 00 00
1923 * 00 00 00 00 00 00 00 00
1924 * 00 00 00 00 00 00 00 00
1925 * bss type 02
1926 * beacon period 64 00
1927 * dtim period 00
1928 * IE IBSS 06
1929 * IE IBSS len 02
1930 * IE IBSS atim 00 00
1931 * reserved 00 00 00 00
1932 * IE DS 03
1933 * IE DS len 01
1934 * IE DS channel 01
1935 * reserved 00 00 00 00
1936 * probe delay 00 00
1937 * capability 02 00
1938 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1939 * 0c 12 18 24 30 48 60 6c
1940 * padding 100 bytes
1941 */
1942 memset(&cmd, 0, sizeof(cmd));
1943 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1944 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1945 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1946 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1947 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1948 cmd.ibss.header.len = 2;
1949 cmd.ibss.atimwindow = 0;
1950 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1951 cmd.ds.header.len = 1;
1952 cmd.ds.channel = params->chandef.chan->hw_value;
1953 /* Only v8 and below support setting probe delay */
1954 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1955 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1956 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1957 capability = WLAN_CAPABILITY_IBSS;
1958 cmd.capability = cpu_to_le16(capability);
1959 lbs_add_rates(cmd.rates);
1960
1961
1962 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1963 if (ret)
1964 goto out;
1965
1966 /*
1967 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1968 *
1969 * response 2b 80
1970 * size 14 00
1971 * sequence xx xx
1972 * result 00 00
1973 * reserved 00
1974 * bssid 02 2b 7b 0f 86 0e
1975 */
1976 lbs_join_post(priv, params, resp->bssid, capability);
1977
1978 out:
1979 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1980 return ret;
1981 }
1982
1983
1984 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1985 struct cfg80211_ibss_params *params)
1986 {
1987 struct lbs_private *priv = wiphy_priv(wiphy);
1988 int ret = 0;
1989 struct cfg80211_bss *bss;
1990 DECLARE_SSID_BUF(ssid_buf);
1991
1992 if (dev == priv->mesh_dev)
1993 return -EOPNOTSUPP;
1994
1995 lbs_deb_enter(LBS_DEB_CFG80211);
1996
1997 if (!params->chandef.chan) {
1998 ret = -ENOTSUPP;
1999 goto out;
2000 }
2001
2002 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
2003 if (ret)
2004 goto out;
2005
2006 /* Search if someone is beaconing. This assumes that the
2007 * bss list is populated already */
2008 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2009 params->ssid, params->ssid_len,
2010 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2011
2012 if (bss) {
2013 ret = lbs_ibss_join_existing(priv, params, bss);
2014 cfg80211_put_bss(bss);
2015 } else
2016 ret = lbs_ibss_start_new(priv, params);
2017
2018
2019 out:
2020 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2021 return ret;
2022 }
2023
2024
2025 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2026 {
2027 struct lbs_private *priv = wiphy_priv(wiphy);
2028 struct cmd_ds_802_11_ad_hoc_stop cmd;
2029 int ret = 0;
2030
2031 if (dev == priv->mesh_dev)
2032 return -EOPNOTSUPP;
2033
2034 lbs_deb_enter(LBS_DEB_CFG80211);
2035
2036 memset(&cmd, 0, sizeof(cmd));
2037 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2038 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2039
2040 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2041 lbs_mac_event_disconnected(priv);
2042
2043 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2044 return ret;
2045 }
2046
2047
2048
2049
2050 /*
2051 * Initialization
2052 */
2053
2054 static struct cfg80211_ops lbs_cfg80211_ops = {
2055 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2056 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2057 .scan = lbs_cfg_scan,
2058 .connect = lbs_cfg_connect,
2059 .disconnect = lbs_cfg_disconnect,
2060 .add_key = lbs_cfg_add_key,
2061 .del_key = lbs_cfg_del_key,
2062 .set_default_key = lbs_cfg_set_default_key,
2063 .get_station = lbs_cfg_get_station,
2064 .change_virtual_intf = lbs_change_intf,
2065 .join_ibss = lbs_join_ibss,
2066 .leave_ibss = lbs_leave_ibss,
2067 };
2068
2069
2070 /*
2071 * At this time lbs_private *priv doesn't even exist, so we just allocate
2072 * memory and don't initialize the wiphy further. This is postponed until we
2073 * can talk to the firmware and happens at registration time in
2074 * lbs_cfg_wiphy_register().
2075 */
2076 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2077 {
2078 int ret = 0;
2079 struct wireless_dev *wdev;
2080
2081 lbs_deb_enter(LBS_DEB_CFG80211);
2082
2083 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2084 if (!wdev)
2085 return ERR_PTR(-ENOMEM);
2086
2087 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2088 if (!wdev->wiphy) {
2089 dev_err(dev, "cannot allocate wiphy\n");
2090 ret = -ENOMEM;
2091 goto err_wiphy_new;
2092 }
2093
2094 lbs_deb_leave(LBS_DEB_CFG80211);
2095 return wdev;
2096
2097 err_wiphy_new:
2098 kfree(wdev);
2099 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2100 return ERR_PTR(ret);
2101 }
2102
2103
2104 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2105 {
2106 struct region_code_mapping {
2107 const char *cn;
2108 int code;
2109 };
2110
2111 /* Section 5.17.2 */
2112 static const struct region_code_mapping regmap[] = {
2113 {"US ", 0x10}, /* US FCC */
2114 {"CA ", 0x20}, /* Canada */
2115 {"EU ", 0x30}, /* ETSI */
2116 {"ES ", 0x31}, /* Spain */
2117 {"FR ", 0x32}, /* France */
2118 {"JP ", 0x40}, /* Japan */
2119 };
2120 size_t i;
2121
2122 lbs_deb_enter(LBS_DEB_CFG80211);
2123
2124 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2125 if (regmap[i].code == priv->regioncode) {
2126 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2127 break;
2128 }
2129
2130 lbs_deb_leave(LBS_DEB_CFG80211);
2131 }
2132
2133 static void lbs_reg_notifier(struct wiphy *wiphy,
2134 struct regulatory_request *request)
2135 {
2136 struct lbs_private *priv = wiphy_priv(wiphy);
2137
2138 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2139 "callback for domain %c%c\n", request->alpha2[0],
2140 request->alpha2[1]);
2141
2142 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2143 if (lbs_iface_active(priv))
2144 lbs_set_11d_domain_info(priv);
2145
2146 lbs_deb_leave(LBS_DEB_CFG80211);
2147 }
2148
2149 /*
2150 * This function get's called after lbs_setup_firmware() determined the
2151 * firmware capabities. So we can setup the wiphy according to our
2152 * hardware/firmware.
2153 */
2154 int lbs_cfg_register(struct lbs_private *priv)
2155 {
2156 struct wireless_dev *wdev = priv->wdev;
2157 int ret;
2158
2159 lbs_deb_enter(LBS_DEB_CFG80211);
2160
2161 wdev->wiphy->max_scan_ssids = 1;
2162 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2163
2164 wdev->wiphy->interface_modes =
2165 BIT(NL80211_IFTYPE_STATION) |
2166 BIT(NL80211_IFTYPE_ADHOC);
2167 if (lbs_rtap_supported(priv))
2168 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2169 if (lbs_mesh_activated(priv))
2170 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2171
2172 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2173
2174 /*
2175 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2176 * never seen a firmware without WPA
2177 */
2178 wdev->wiphy->cipher_suites = cipher_suites;
2179 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2180 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2181
2182 ret = wiphy_register(wdev->wiphy);
2183 if (ret < 0)
2184 pr_err("cannot register wiphy device\n");
2185
2186 priv->wiphy_registered = true;
2187
2188 ret = register_netdev(priv->dev);
2189 if (ret)
2190 pr_err("cannot register network device\n");
2191
2192 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2193
2194 lbs_cfg_set_regulatory_hint(priv);
2195
2196 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2197 return ret;
2198 }
2199
2200 void lbs_scan_deinit(struct lbs_private *priv)
2201 {
2202 lbs_deb_enter(LBS_DEB_CFG80211);
2203 cancel_delayed_work_sync(&priv->scan_work);
2204 }
2205
2206
2207 void lbs_cfg_free(struct lbs_private *priv)
2208 {
2209 struct wireless_dev *wdev = priv->wdev;
2210
2211 lbs_deb_enter(LBS_DEB_CFG80211);
2212
2213 if (!wdev)
2214 return;
2215
2216 if (priv->wiphy_registered)
2217 wiphy_unregister(wdev->wiphy);
2218
2219 if (wdev->wiphy)
2220 wiphy_free(wdev->wiphy);
2221
2222 kfree(wdev);
2223 }
Linux kernel - Deliverables
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