projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'next' into for-linus
[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 u8 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_channel(struct wiphy *wiphy,
439 struct net_device *netdev,
440 struct ieee80211_channel *channel,
441 enum nl80211_channel_type channel_type)
442 {
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
447 netdev_name(netdev), channel->center_freq, channel_type);
448
449 if (channel_type != NL80211_CHAN_NO_HT)
450 goto out;
451
452 if (netdev == priv->mesh_dev)
453 ret = lbs_mesh_set_channel(priv, channel->hw_value);
454 else
455 ret = lbs_set_channel(priv, channel->hw_value);
456
457 out:
458 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
459 return ret;
460 }
461
462
463
464 /*
465 * Scanning
466 */
467
468 /*
469 * When scanning, the firmware doesn't send a nul packet with the power-safe
470 * bit to the AP. So we cannot stay away from our current channel too long,
471 * otherwise we loose data. So take a "nap" while scanning every other
472 * while.
473 */
474 #define LBS_SCAN_BEFORE_NAP 4
475
476
477 /*
478 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
479 * which isn't really an RSSI, as it becomes larger when moving away from
480 * the AP. Anyway, we need to convert that into mBm.
481 */
482 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
483 ((-(int)rssi + 3)*100)
484
485 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
486 struct cmd_header *resp)
487 {
488 struct cfg80211_bss *bss;
489 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
490 int bsssize;
491 const u8 *pos;
492 const u8 *tsfdesc;
493 int tsfsize;
494 int i;
495 int ret = -EILSEQ;
496
497 lbs_deb_enter(LBS_DEB_CFG80211);
498
499 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
500
501 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
502 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
503
504 if (scanresp->nr_sets == 0) {
505 ret = 0;
506 goto done;
507 }
508
509 /*
510 * The general layout of the scan response is described in chapter
511 * 5.7.1. Basically we have a common part, then any number of BSS
512 * descriptor sections. Finally we have section with the same number
513 * of TSFs.
514 *
515 * cmd_ds_802_11_scan_rsp
516 * cmd_header
517 * pos_size
518 * nr_sets
519 * bssdesc 1
520 * bssid
521 * rssi
522 * timestamp
523 * intvl
524 * capa
525 * IEs
526 * bssdesc 2
527 * bssdesc n
528 * MrvlIEtypes_TsfFimestamp_t
529 * TSF for BSS 1
530 * TSF for BSS 2
531 * TSF for BSS n
532 */
533
534 pos = scanresp->bssdesc_and_tlvbuffer;
535
536 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
537 scanresp->bssdescriptsize);
538
539 tsfdesc = pos + bsssize;
540 tsfsize = 4 + 8 * scanresp->nr_sets;
541 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
542
543 /* Validity check: we expect a Marvell-Local TLV */
544 i = get_unaligned_le16(tsfdesc);
545 tsfdesc += 2;
546 if (i != TLV_TYPE_TSFTIMESTAMP) {
547 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
548 goto done;
549 }
550
551 /*
552 * Validity check: the TLV holds TSF values with 8 bytes each, so
553 * the size in the TLV must match the nr_sets value
554 */
555 i = get_unaligned_le16(tsfdesc);
556 tsfdesc += 2;
557 if (i / 8 != scanresp->nr_sets) {
558 lbs_deb_scan("scan response: invalid number of TSF timestamp "
559 "sets (expected %d got %d)\n", scanresp->nr_sets,
560 i / 8);
561 goto done;
562 }
563
564 for (i = 0; i < scanresp->nr_sets; i++) {
565 const u8 *bssid;
566 const u8 *ie;
567 int left;
568 int ielen;
569 int rssi;
570 u16 intvl;
571 u16 capa;
572 int chan_no = -1;
573 const u8 *ssid = NULL;
574 u8 ssid_len = 0;
575 DECLARE_SSID_BUF(ssid_buf);
576
577 int len = get_unaligned_le16(pos);
578 pos += 2;
579
580 /* BSSID */
581 bssid = pos;
582 pos += ETH_ALEN;
583 /* RSSI */
584 rssi = *pos++;
585 /* Packet time stamp */
586 pos += 8;
587 /* Beacon interval */
588 intvl = get_unaligned_le16(pos);
589 pos += 2;
590 /* Capabilities */
591 capa = get_unaligned_le16(pos);
592 pos += 2;
593
594 /* To find out the channel, we must parse the IEs */
595 ie = pos;
596 /*
597 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
598 * interval, capabilities
599 */
600 ielen = left = len - (6 + 1 + 8 + 2 + 2);
601 while (left >= 2) {
602 u8 id, elen;
603 id = *pos++;
604 elen = *pos++;
605 left -= 2;
606 if (elen > left || elen == 0) {
607 lbs_deb_scan("scan response: invalid IE fmt\n");
608 goto done;
609 }
610
611 if (id == WLAN_EID_DS_PARAMS)
612 chan_no = *pos;
613 if (id == WLAN_EID_SSID) {
614 ssid = pos;
615 ssid_len = elen;
616 }
617 left -= elen;
618 pos += elen;
619 }
620
621 /* No channel, no luck */
622 if (chan_no != -1) {
623 struct wiphy *wiphy = priv->wdev->wiphy;
624 int freq = ieee80211_channel_to_frequency(chan_no,
625 IEEE80211_BAND_2GHZ);
626 struct ieee80211_channel *channel =
627 ieee80211_get_channel(wiphy, freq);
628
629 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
630 "%d dBm\n",
631 bssid, capa, chan_no,
632 print_ssid(ssid_buf, ssid, ssid_len),
633 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
634
635 if (channel &&
636 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
637 bss = cfg80211_inform_bss(wiphy, channel,
638 bssid, get_unaligned_le64(tsfdesc),
639 capa, intvl, ie, ielen,
640 LBS_SCAN_RSSI_TO_MBM(rssi),
641 GFP_KERNEL);
642 cfg80211_put_bss(bss);
643 }
644 } else
645 lbs_deb_scan("scan response: missing BSS channel IE\n");
646
647 tsfdesc += 8;
648 }
649 ret = 0;
650
651 done:
652 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
653 return ret;
654 }
655
656
657 /*
658 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
659 * TLV and a rates TLV. Determine the maximum size of them:
660 */
661 #define LBS_SCAN_MAX_CMD_SIZE \
662 (sizeof(struct cmd_ds_802_11_scan) \
663 + LBS_MAX_SSID_TLV_SIZE \
664 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
665 + LBS_MAX_RATES_TLV_SIZE)
666
667 /*
668 * Assumes priv->scan_req is initialized and valid
669 * Assumes priv->scan_channel is initialized
670 */
671 static void lbs_scan_worker(struct work_struct *work)
672 {
673 struct lbs_private *priv =
674 container_of(work, struct lbs_private, scan_work.work);
675 struct cmd_ds_802_11_scan *scan_cmd;
676 u8 *tlv; /* pointer into our current, growing TLV storage area */
677 int last_channel;
678 int running, carrier;
679
680 lbs_deb_enter(LBS_DEB_SCAN);
681
682 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
683 if (scan_cmd == NULL)
684 goto out_no_scan_cmd;
685
686 /* prepare fixed part of scan command */
687 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
688
689 /* stop network while we're away from our main channel */
690 running = !netif_queue_stopped(priv->dev);
691 carrier = netif_carrier_ok(priv->dev);
692 if (running)
693 netif_stop_queue(priv->dev);
694 if (carrier)
695 netif_carrier_off(priv->dev);
696
697 /* prepare fixed part of scan command */
698 tlv = scan_cmd->tlvbuffer;
699
700 /* add SSID TLV */
701 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
702 tlv += lbs_add_ssid_tlv(tlv,
703 priv->scan_req->ssids[0].ssid,
704 priv->scan_req->ssids[0].ssid_len);
705
706 /* add channel TLVs */
707 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
708 if (last_channel > priv->scan_req->n_channels)
709 last_channel = priv->scan_req->n_channels;
710 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
711 priv->scan_req->n_ssids);
712
713 /* add rates TLV */
714 tlv += lbs_add_supported_rates_tlv(tlv);
715
716 if (priv->scan_channel < priv->scan_req->n_channels) {
717 cancel_delayed_work(&priv->scan_work);
718 if (netif_running(priv->dev))
719 queue_delayed_work(priv->work_thread, &priv->scan_work,
720 msecs_to_jiffies(300));
721 }
722
723 /* This is the final data we are about to send */
724 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
725 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
726 sizeof(*scan_cmd));
727 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
728 tlv - scan_cmd->tlvbuffer);
729
730 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
731 le16_to_cpu(scan_cmd->hdr.size),
732 lbs_ret_scan, 0);
733
734 if (priv->scan_channel >= priv->scan_req->n_channels) {
735 /* Mark scan done */
736 cancel_delayed_work(&priv->scan_work);
737 lbs_scan_done(priv);
738 }
739
740 /* Restart network */
741 if (carrier)
742 netif_carrier_on(priv->dev);
743 if (running && !priv->tx_pending_len)
744 netif_wake_queue(priv->dev);
745
746 kfree(scan_cmd);
747
748 /* Wake up anything waiting on scan completion */
749 if (priv->scan_req == NULL) {
750 lbs_deb_scan("scan: waking up waiters\n");
751 wake_up_all(&priv->scan_q);
752 }
753
754 out_no_scan_cmd:
755 lbs_deb_leave(LBS_DEB_SCAN);
756 }
757
758 static void _internal_start_scan(struct lbs_private *priv, bool internal,
759 struct cfg80211_scan_request *request)
760 {
761 lbs_deb_enter(LBS_DEB_CFG80211);
762
763 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
764 request->n_ssids, request->n_channels, request->ie_len);
765
766 priv->scan_channel = 0;
767 priv->scan_req = request;
768 priv->internal_scan = internal;
769
770 queue_delayed_work(priv->work_thread, &priv->scan_work,
771 msecs_to_jiffies(50));
772
773 lbs_deb_leave(LBS_DEB_CFG80211);
774 }
775
776 /*
777 * Clean up priv->scan_req. Should be used to handle the allocation details.
778 */
779 void lbs_scan_done(struct lbs_private *priv)
780 {
781 WARN_ON(!priv->scan_req);
782
783 if (priv->internal_scan)
784 kfree(priv->scan_req);
785 else
786 cfg80211_scan_done(priv->scan_req, false);
787
788 priv->scan_req = NULL;
789 }
790
791 static int lbs_cfg_scan(struct wiphy *wiphy,
792 struct net_device *dev,
793 struct cfg80211_scan_request *request)
794 {
795 struct lbs_private *priv = wiphy_priv(wiphy);
796 int ret = 0;
797
798 lbs_deb_enter(LBS_DEB_CFG80211);
799
800 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
801 /* old scan request not yet processed */
802 ret = -EAGAIN;
803 goto out;
804 }
805
806 _internal_start_scan(priv, false, request);
807
808 if (priv->surpriseremoved)
809 ret = -EIO;
810
811 out:
812 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
813 return ret;
814 }
815
816
817
818
819 /*
820 * Events
821 */
822
823 void lbs_send_disconnect_notification(struct lbs_private *priv)
824 {
825 lbs_deb_enter(LBS_DEB_CFG80211);
826
827 cfg80211_disconnected(priv->dev,
828 0,
829 NULL, 0,
830 GFP_KERNEL);
831
832 lbs_deb_leave(LBS_DEB_CFG80211);
833 }
834
835 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
836 {
837 lbs_deb_enter(LBS_DEB_CFG80211);
838
839 cfg80211_michael_mic_failure(priv->dev,
840 priv->assoc_bss,
841 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
842 NL80211_KEYTYPE_GROUP :
843 NL80211_KEYTYPE_PAIRWISE,
844 -1,
845 NULL,
846 GFP_KERNEL);
847
848 lbs_deb_leave(LBS_DEB_CFG80211);
849 }
850
851
852
853
854 /*
855 * Connect/disconnect
856 */
857
858
859 /*
860 * This removes all WEP keys
861 */
862 static int lbs_remove_wep_keys(struct lbs_private *priv)
863 {
864 struct cmd_ds_802_11_set_wep cmd;
865 int ret;
866
867 lbs_deb_enter(LBS_DEB_CFG80211);
868
869 memset(&cmd, 0, sizeof(cmd));
870 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
871 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
872 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
873
874 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
875
876 lbs_deb_leave(LBS_DEB_CFG80211);
877 return ret;
878 }
879
880 /*
881 * Set WEP keys
882 */
883 static int lbs_set_wep_keys(struct lbs_private *priv)
884 {
885 struct cmd_ds_802_11_set_wep cmd;
886 int i;
887 int ret;
888
889 lbs_deb_enter(LBS_DEB_CFG80211);
890
891 /*
892 * command 13 00
893 * size 50 00
894 * sequence xx xx
895 * result 00 00
896 * action 02 00 ACT_ADD
897 * transmit key 00 00
898 * type for key 1 01 WEP40
899 * type for key 2 00
900 * type for key 3 00
901 * type for key 4 00
902 * key 1 39 39 39 39 39 00 00 00
903 * 00 00 00 00 00 00 00 00
904 * key 2 00 00 00 00 00 00 00 00
905 * 00 00 00 00 00 00 00 00
906 * key 3 00 00 00 00 00 00 00 00
907 * 00 00 00 00 00 00 00 00
908 * key 4 00 00 00 00 00 00 00 00
909 */
910 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
911 priv->wep_key_len[2] || priv->wep_key_len[3]) {
912 /* Only set wep keys if we have at least one of them */
913 memset(&cmd, 0, sizeof(cmd));
914 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
915 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
916 cmd.action = cpu_to_le16(CMD_ACT_ADD);
917
918 for (i = 0; i < 4; i++) {
919 switch (priv->wep_key_len[i]) {
920 case WLAN_KEY_LEN_WEP40:
921 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
922 break;
923 case WLAN_KEY_LEN_WEP104:
924 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
925 break;
926 default:
927 cmd.keytype[i] = 0;
928 break;
929 }
930 memcpy(cmd.keymaterial[i], priv->wep_key[i],
931 priv->wep_key_len[i]);
932 }
933
934 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
935 } else {
936 /* Otherwise remove all wep keys */
937 ret = lbs_remove_wep_keys(priv);
938 }
939
940 lbs_deb_leave(LBS_DEB_CFG80211);
941 return ret;
942 }
943
944
945 /*
946 * Enable/Disable RSN status
947 */
948 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
949 {
950 struct cmd_ds_802_11_enable_rsn cmd;
951 int ret;
952
953 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
954
955 /*
956 * cmd 2f 00
957 * size 0c 00
958 * sequence xx xx
959 * result 00 00
960 * action 01 00 ACT_SET
961 * enable 01 00
962 */
963 memset(&cmd, 0, sizeof(cmd));
964 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
965 cmd.action = cpu_to_le16(CMD_ACT_SET);
966 cmd.enable = cpu_to_le16(enable);
967
968 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
969
970 lbs_deb_leave(LBS_DEB_CFG80211);
971 return ret;
972 }
973
974
975 /*
976 * Set WPA/WPA key material
977 */
978
979 /*
980 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
981 * get rid of WEXT, this should go into host.h
982 */
983
984 struct cmd_key_material {
985 struct cmd_header hdr;
986
987 __le16 action;
988 struct MrvlIEtype_keyParamSet param;
989 } __packed;
990
991 static int lbs_set_key_material(struct lbs_private *priv,
992 int key_type,
993 int key_info,
994 u8 *key, u16 key_len)
995 {
996 struct cmd_key_material cmd;
997 int ret;
998
999 lbs_deb_enter(LBS_DEB_CFG80211);
1000
1001 /*
1002 * Example for WPA (TKIP):
1003 *
1004 * cmd 5e 00
1005 * size 34 00
1006 * sequence xx xx
1007 * result 00 00
1008 * action 01 00
1009 * TLV type 00 01 key param
1010 * length 00 26
1011 * key type 01 00 TKIP
1012 * key info 06 00 UNICAST | ENABLED
1013 * key len 20 00
1014 * key 32 bytes
1015 */
1016 memset(&cmd, 0, sizeof(cmd));
1017 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1018 cmd.action = cpu_to_le16(CMD_ACT_SET);
1019 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1020 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1021 cmd.param.keytypeid = cpu_to_le16(key_type);
1022 cmd.param.keyinfo = cpu_to_le16(key_info);
1023 cmd.param.keylen = cpu_to_le16(key_len);
1024 if (key && key_len)
1025 memcpy(cmd.param.key, key, key_len);
1026
1027 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1028
1029 lbs_deb_leave(LBS_DEB_CFG80211);
1030 return ret;
1031 }
1032
1033
1034 /*
1035 * Sets the auth type (open, shared, etc) in the firmware. That
1036 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1037 * command doesn't send an authentication frame at all, it just
1038 * stores the auth_type.
1039 */
1040 static int lbs_set_authtype(struct lbs_private *priv,
1041 struct cfg80211_connect_params *sme)
1042 {
1043 struct cmd_ds_802_11_authenticate cmd;
1044 int ret;
1045
1046 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1047
1048 /*
1049 * cmd 11 00
1050 * size 19 00
1051 * sequence xx xx
1052 * result 00 00
1053 * BSS id 00 13 19 80 da 30
1054 * auth type 00
1055 * reserved 00 00 00 00 00 00 00 00 00 00
1056 */
1057 memset(&cmd, 0, sizeof(cmd));
1058 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1059 if (sme->bssid)
1060 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1061 /* convert auth_type */
1062 ret = lbs_auth_to_authtype(sme->auth_type);
1063 if (ret < 0)
1064 goto done;
1065
1066 cmd.authtype = ret;
1067 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1068
1069 done:
1070 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1071 return ret;
1072 }
1073
1074
1075 /*
1076 * Create association request
1077 */
1078 #define LBS_ASSOC_MAX_CMD_SIZE \
1079 (sizeof(struct cmd_ds_802_11_associate) \
1080 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1081 + LBS_MAX_SSID_TLV_SIZE \
1082 + LBS_MAX_CHANNEL_TLV_SIZE \
1083 + LBS_MAX_CF_PARAM_TLV_SIZE \
1084 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1085 + LBS_MAX_WPA_TLV_SIZE)
1086
1087 static int lbs_associate(struct lbs_private *priv,
1088 struct cfg80211_bss *bss,
1089 struct cfg80211_connect_params *sme)
1090 {
1091 struct cmd_ds_802_11_associate_response *resp;
1092 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1093 GFP_KERNEL);
1094 const u8 *ssid_eid;
1095 size_t len, resp_ie_len;
1096 int status;
1097 int ret;
1098 u8 *pos = &(cmd->iebuf[0]);
1099 u8 *tmp;
1100
1101 lbs_deb_enter(LBS_DEB_CFG80211);
1102
1103 if (!cmd) {
1104 ret = -ENOMEM;
1105 goto done;
1106 }
1107
1108 /*
1109 * cmd 50 00
1110 * length 34 00
1111 * sequence xx xx
1112 * result 00 00
1113 * BSS id 00 13 19 80 da 30
1114 * capabilities 11 00
1115 * listen interval 0a 00
1116 * beacon interval 00 00
1117 * DTIM period 00
1118 * TLVs xx (up to 512 bytes)
1119 */
1120 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1121
1122 /* Fill in static fields */
1123 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1124 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1125 cmd->capability = cpu_to_le16(bss->capability);
1126
1127 /* add SSID TLV */
1128 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1129 if (ssid_eid)
1130 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1131 else
1132 lbs_deb_assoc("no SSID\n");
1133
1134 /* add DS param TLV */
1135 if (bss->channel)
1136 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1137 else
1138 lbs_deb_assoc("no channel\n");
1139
1140 /* add (empty) CF param TLV */
1141 pos += lbs_add_cf_param_tlv(pos);
1142
1143 /* add rates TLV */
1144 tmp = pos + 4; /* skip Marvell IE header */
1145 pos += lbs_add_common_rates_tlv(pos, bss);
1146 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1147
1148 /* add auth type TLV */
1149 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1150 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1151
1152 /* add WPA/WPA2 TLV */
1153 if (sme->ie && sme->ie_len)
1154 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1155
1156 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1157 (u16)(pos - (u8 *) &cmd->iebuf);
1158 cmd->hdr.size = cpu_to_le16(len);
1159
1160 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1161 le16_to_cpu(cmd->hdr.size));
1162
1163 /* store for later use */
1164 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1165
1166 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1167 if (ret)
1168 goto done;
1169
1170 /* generate connect message to cfg80211 */
1171
1172 resp = (void *) cmd; /* recast for easier field access */
1173 status = le16_to_cpu(resp->statuscode);
1174
1175 /* Older FW versions map the IEEE 802.11 Status Code in the association
1176 * response to the following values returned in resp->statuscode:
1177 *
1178 * IEEE Status Code Marvell Status Code
1179 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1180 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1181 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1182 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1183 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1184 * others -> 0x0003 ASSOC_RESULT_REFUSED
1185 *
1186 * Other response codes:
1187 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1188 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1189 * association response from the AP)
1190 */
1191 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1192 switch (status) {
1193 case 0:
1194 break;
1195 case 1:
1196 lbs_deb_assoc("invalid association parameters\n");
1197 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1198 break;
1199 case 2:
1200 lbs_deb_assoc("timer expired while waiting for AP\n");
1201 status = WLAN_STATUS_AUTH_TIMEOUT;
1202 break;
1203 case 3:
1204 lbs_deb_assoc("association refused by AP\n");
1205 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1206 break;
1207 case 4:
1208 lbs_deb_assoc("authentication refused by AP\n");
1209 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1210 break;
1211 default:
1212 lbs_deb_assoc("association failure %d\n", status);
1213 /* v5 OLPC firmware does return the AP status code if
1214 * it's not one of the values above. Let that through.
1215 */
1216 break;
1217 }
1218 }
1219
1220 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1221 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1222 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1223
1224 resp_ie_len = le16_to_cpu(resp->hdr.size)
1225 - sizeof(resp->hdr)
1226 - 6;
1227 cfg80211_connect_result(priv->dev,
1228 priv->assoc_bss,
1229 sme->ie, sme->ie_len,
1230 resp->iebuf, resp_ie_len,
1231 status,
1232 GFP_KERNEL);
1233
1234 if (status == 0) {
1235 /* TODO: get rid of priv->connect_status */
1236 priv->connect_status = LBS_CONNECTED;
1237 netif_carrier_on(priv->dev);
1238 if (!priv->tx_pending_len)
1239 netif_tx_wake_all_queues(priv->dev);
1240 }
1241
1242 done:
1243 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1244 return ret;
1245 }
1246
1247 static struct cfg80211_scan_request *
1248 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1249 {
1250 struct cfg80211_scan_request *creq = NULL;
1251 int i, n_channels = 0;
1252 enum ieee80211_band band;
1253
1254 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1255 if (wiphy->bands[band])
1256 n_channels += wiphy->bands[band]->n_channels;
1257 }
1258
1259 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1260 n_channels * sizeof(void *),
1261 GFP_ATOMIC);
1262 if (!creq)
1263 return NULL;
1264
1265 /* SSIDs come after channels */
1266 creq->ssids = (void *)&creq->channels[n_channels];
1267 creq->n_channels = n_channels;
1268 creq->n_ssids = 1;
1269
1270 /* Scan all available channels */
1271 i = 0;
1272 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1273 int j;
1274
1275 if (!wiphy->bands[band])
1276 continue;
1277
1278 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1279 /* ignore disabled channels */
1280 if (wiphy->bands[band]->channels[j].flags &
1281 IEEE80211_CHAN_DISABLED)
1282 continue;
1283
1284 creq->channels[i] = &wiphy->bands[band]->channels[j];
1285 i++;
1286 }
1287 }
1288 if (i) {
1289 /* Set real number of channels specified in creq->channels[] */
1290 creq->n_channels = i;
1291
1292 /* Scan for the SSID we're going to connect to */
1293 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1294 creq->ssids[0].ssid_len = sme->ssid_len;
1295 } else {
1296 /* No channels found... */
1297 kfree(creq);
1298 creq = NULL;
1299 }
1300
1301 return creq;
1302 }
1303
1304 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1305 struct cfg80211_connect_params *sme)
1306 {
1307 struct lbs_private *priv = wiphy_priv(wiphy);
1308 struct cfg80211_bss *bss = NULL;
1309 int ret = 0;
1310 u8 preamble = RADIO_PREAMBLE_SHORT;
1311
1312 if (dev == priv->mesh_dev)
1313 return -EOPNOTSUPP;
1314
1315 lbs_deb_enter(LBS_DEB_CFG80211);
1316
1317 if (!sme->bssid) {
1318 struct cfg80211_scan_request *creq;
1319
1320 /*
1321 * Scan for the requested network after waiting for existing
1322 * scans to finish.
1323 */
1324 lbs_deb_assoc("assoc: waiting for existing scans\n");
1325 wait_event_interruptible_timeout(priv->scan_q,
1326 (priv->scan_req == NULL),
1327 (15 * HZ));
1328
1329 creq = _new_connect_scan_req(wiphy, sme);
1330 if (!creq) {
1331 ret = -EINVAL;
1332 goto done;
1333 }
1334
1335 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1336 _internal_start_scan(priv, true, creq);
1337
1338 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1339 wait_event_interruptible_timeout(priv->scan_q,
1340 (priv->scan_req == NULL),
1341 (15 * HZ));
1342 lbs_deb_assoc("assoc: scanning competed\n");
1343 }
1344
1345 /* Find the BSS we want using available scan results */
1346 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1347 sme->ssid, sme->ssid_len,
1348 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1349 if (!bss) {
1350 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1351 sme->bssid);
1352 ret = -ENOENT;
1353 goto done;
1354 }
1355 lbs_deb_assoc("trying %pM\n", bss->bssid);
1356 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1357 sme->crypto.cipher_group,
1358 sme->key_idx, sme->key_len);
1359
1360 /* As this is a new connection, clear locally stored WEP keys */
1361 priv->wep_tx_key = 0;
1362 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1363 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1364
1365 /* set/remove WEP keys */
1366 switch (sme->crypto.cipher_group) {
1367 case WLAN_CIPHER_SUITE_WEP40:
1368 case WLAN_CIPHER_SUITE_WEP104:
1369 /* Store provided WEP keys in priv-> */
1370 priv->wep_tx_key = sme->key_idx;
1371 priv->wep_key_len[sme->key_idx] = sme->key_len;
1372 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1373 /* Set WEP keys and WEP mode */
1374 lbs_set_wep_keys(priv);
1375 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1376 lbs_set_mac_control(priv);
1377 /* No RSN mode for WEP */
1378 lbs_enable_rsn(priv, 0);
1379 break;
1380 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1381 /*
1382 * If we don't have no WEP, no WPA and no WPA2,
1383 * we remove all keys like in the WPA/WPA2 setup,
1384 * we just don't set RSN.
1385 *
1386 * Therefore: fall-through
1387 */
1388 case WLAN_CIPHER_SUITE_TKIP:
1389 case WLAN_CIPHER_SUITE_CCMP:
1390 /* Remove WEP keys and WEP mode */
1391 lbs_remove_wep_keys(priv);
1392 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1393 lbs_set_mac_control(priv);
1394
1395 /* clear the WPA/WPA2 keys */
1396 lbs_set_key_material(priv,
1397 KEY_TYPE_ID_WEP, /* doesn't matter */
1398 KEY_INFO_WPA_UNICAST,
1399 NULL, 0);
1400 lbs_set_key_material(priv,
1401 KEY_TYPE_ID_WEP, /* doesn't matter */
1402 KEY_INFO_WPA_MCAST,
1403 NULL, 0);
1404 /* RSN mode for WPA/WPA2 */
1405 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1406 break;
1407 default:
1408 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1409 sme->crypto.cipher_group);
1410 ret = -ENOTSUPP;
1411 goto done;
1412 }
1413
1414 lbs_set_authtype(priv, sme);
1415 lbs_set_radio(priv, preamble, 1);
1416
1417 /* Do the actual association */
1418 ret = lbs_associate(priv, bss, sme);
1419
1420 done:
1421 if (bss)
1422 cfg80211_put_bss(bss);
1423 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1424 return ret;
1425 }
1426
1427 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1428 {
1429 struct cmd_ds_802_11_deauthenticate cmd;
1430 int ret;
1431
1432 memset(&cmd, 0, sizeof(cmd));
1433 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1434 /* Mildly ugly to use a locally store my own BSSID ... */
1435 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1436 cmd.reasoncode = cpu_to_le16(reason);
1437
1438 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1439 if (ret)
1440 return ret;
1441
1442 cfg80211_disconnected(priv->dev,
1443 reason,
1444 NULL, 0,
1445 GFP_KERNEL);
1446 priv->connect_status = LBS_DISCONNECTED;
1447
1448 return 0;
1449 }
1450
1451 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1452 u16 reason_code)
1453 {
1454 struct lbs_private *priv = wiphy_priv(wiphy);
1455
1456 if (dev == priv->mesh_dev)
1457 return -EOPNOTSUPP;
1458
1459 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1460
1461 /* store for lbs_cfg_ret_disconnect() */
1462 priv->disassoc_reason = reason_code;
1463
1464 return lbs_disconnect(priv, reason_code);
1465 }
1466
1467 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1468 struct net_device *netdev,
1469 u8 key_index, bool unicast,
1470 bool multicast)
1471 {
1472 struct lbs_private *priv = wiphy_priv(wiphy);
1473
1474 if (netdev == priv->mesh_dev)
1475 return -EOPNOTSUPP;
1476
1477 lbs_deb_enter(LBS_DEB_CFG80211);
1478
1479 if (key_index != priv->wep_tx_key) {
1480 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1481 priv->wep_tx_key = key_index;
1482 lbs_set_wep_keys(priv);
1483 }
1484
1485 return 0;
1486 }
1487
1488
1489 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1490 u8 idx, bool pairwise, const u8 *mac_addr,
1491 struct key_params *params)
1492 {
1493 struct lbs_private *priv = wiphy_priv(wiphy);
1494 u16 key_info;
1495 u16 key_type;
1496 int ret = 0;
1497
1498 if (netdev == priv->mesh_dev)
1499 return -EOPNOTSUPP;
1500
1501 lbs_deb_enter(LBS_DEB_CFG80211);
1502
1503 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1504 params->cipher, mac_addr);
1505 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1506 idx, params->key_len);
1507 if (params->key_len)
1508 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1509 params->key, params->key_len);
1510
1511 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1512 if (params->seq_len)
1513 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1514 params->seq, params->seq_len);
1515
1516 switch (params->cipher) {
1517 case WLAN_CIPHER_SUITE_WEP40:
1518 case WLAN_CIPHER_SUITE_WEP104:
1519 /* actually compare if something has changed ... */
1520 if ((priv->wep_key_len[idx] != params->key_len) ||
1521 memcmp(priv->wep_key[idx],
1522 params->key, params->key_len) != 0) {
1523 priv->wep_key_len[idx] = params->key_len;
1524 memcpy(priv->wep_key[idx],
1525 params->key, params->key_len);
1526 lbs_set_wep_keys(priv);
1527 }
1528 break;
1529 case WLAN_CIPHER_SUITE_TKIP:
1530 case WLAN_CIPHER_SUITE_CCMP:
1531 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1532 ? KEY_INFO_WPA_UNICAST
1533 : KEY_INFO_WPA_MCAST);
1534 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1535 ? KEY_TYPE_ID_TKIP
1536 : KEY_TYPE_ID_AES;
1537 lbs_set_key_material(priv,
1538 key_type,
1539 key_info,
1540 params->key, params->key_len);
1541 break;
1542 default:
1543 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1544 ret = -ENOTSUPP;
1545 break;
1546 }
1547
1548 return ret;
1549 }
1550
1551
1552 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1553 u8 key_index, bool pairwise, const u8 *mac_addr)
1554 {
1555
1556 lbs_deb_enter(LBS_DEB_CFG80211);
1557
1558 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1559 key_index, mac_addr);
1560
1561 #ifdef TODO
1562 struct lbs_private *priv = wiphy_priv(wiphy);
1563 /*
1564 * I think can keep this a NO-OP, because:
1565
1566 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1567 * - neither "iw" nor "wpa_supplicant" won't call this during
1568 * an ongoing connection
1569 * - TODO: but I have to check if this is still true when
1570 * I set the AP to periodic re-keying
1571 * - we've not kzallec() something when we've added a key at
1572 * lbs_cfg_connect() or lbs_cfg_add_key().
1573 *
1574 * This causes lbs_cfg_del_key() only called at disconnect time,
1575 * where we'd just waste time deleting a key that is not going
1576 * to be used anyway.
1577 */
1578 if (key_index < 3 && priv->wep_key_len[key_index]) {
1579 priv->wep_key_len[key_index] = 0;
1580 lbs_set_wep_keys(priv);
1581 }
1582 #endif
1583
1584 return 0;
1585 }
1586
1587
1588 /*
1589 * Get station
1590 */
1591
1592 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1593 u8 *mac, struct station_info *sinfo)
1594 {
1595 struct lbs_private *priv = wiphy_priv(wiphy);
1596 s8 signal, noise;
1597 int ret;
1598 size_t i;
1599
1600 lbs_deb_enter(LBS_DEB_CFG80211);
1601
1602 sinfo->filled |= STATION_INFO_TX_BYTES |
1603 STATION_INFO_TX_PACKETS |
1604 STATION_INFO_RX_BYTES |
1605 STATION_INFO_RX_PACKETS;
1606 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1607 sinfo->tx_packets = priv->dev->stats.tx_packets;
1608 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1609 sinfo->rx_packets = priv->dev->stats.rx_packets;
1610
1611 /* Get current RSSI */
1612 ret = lbs_get_rssi(priv, &signal, &noise);
1613 if (ret == 0) {
1614 sinfo->signal = signal;
1615 sinfo->filled |= STATION_INFO_SIGNAL;
1616 }
1617
1618 /* Convert priv->cur_rate from hw_value to NL80211 value */
1619 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1620 if (priv->cur_rate == lbs_rates[i].hw_value) {
1621 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1622 sinfo->filled |= STATION_INFO_TX_BITRATE;
1623 break;
1624 }
1625 }
1626
1627 return 0;
1628 }
1629
1630
1631
1632
1633 /*
1634 * Change interface
1635 */
1636
1637 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1638 enum nl80211_iftype type, u32 *flags,
1639 struct vif_params *params)
1640 {
1641 struct lbs_private *priv = wiphy_priv(wiphy);
1642 int ret = 0;
1643
1644 if (dev == priv->mesh_dev)
1645 return -EOPNOTSUPP;
1646
1647 switch (type) {
1648 case NL80211_IFTYPE_MONITOR:
1649 case NL80211_IFTYPE_STATION:
1650 case NL80211_IFTYPE_ADHOC:
1651 break;
1652 default:
1653 return -EOPNOTSUPP;
1654 }
1655
1656 lbs_deb_enter(LBS_DEB_CFG80211);
1657
1658 if (priv->iface_running)
1659 ret = lbs_set_iface_type(priv, type);
1660
1661 if (!ret)
1662 priv->wdev->iftype = type;
1663
1664 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1665 return ret;
1666 }
1667
1668
1669
1670 /*
1671 * IBSS (Ad-Hoc)
1672 */
1673
1674 /*
1675 * The firmware needs the following bits masked out of the beacon-derived
1676 * capability field when associating/joining to a BSS:
1677 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1678 */
1679 #define CAPINFO_MASK (~(0xda00))
1680
1681
1682 static void lbs_join_post(struct lbs_private *priv,
1683 struct cfg80211_ibss_params *params,
1684 u8 *bssid, u16 capability)
1685 {
1686 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1687 2 + 4 + /* basic rates */
1688 2 + 1 + /* DS parameter */
1689 2 + 2 + /* atim */
1690 2 + 8]; /* extended rates */
1691 u8 *fake = fake_ie;
1692 struct cfg80211_bss *bss;
1693
1694 lbs_deb_enter(LBS_DEB_CFG80211);
1695
1696 /*
1697 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1698 * the real IE from the firmware. So we fabricate a fake IE based on
1699 * what the firmware actually sends (sniffed with wireshark).
1700 */
1701 /* Fake SSID IE */
1702 *fake++ = WLAN_EID_SSID;
1703 *fake++ = params->ssid_len;
1704 memcpy(fake, params->ssid, params->ssid_len);
1705 fake += params->ssid_len;
1706 /* Fake supported basic rates IE */
1707 *fake++ = WLAN_EID_SUPP_RATES;
1708 *fake++ = 4;
1709 *fake++ = 0x82;
1710 *fake++ = 0x84;
1711 *fake++ = 0x8b;
1712 *fake++ = 0x96;
1713 /* Fake DS channel IE */
1714 *fake++ = WLAN_EID_DS_PARAMS;
1715 *fake++ = 1;
1716 *fake++ = params->channel->hw_value;
1717 /* Fake IBSS params IE */
1718 *fake++ = WLAN_EID_IBSS_PARAMS;
1719 *fake++ = 2;
1720 *fake++ = 0; /* ATIM=0 */
1721 *fake++ = 0;
1722 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1723 * but I don't know how this could be checked */
1724 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1725 *fake++ = 8;
1726 *fake++ = 0x0c;
1727 *fake++ = 0x12;
1728 *fake++ = 0x18;
1729 *fake++ = 0x24;
1730 *fake++ = 0x30;
1731 *fake++ = 0x48;
1732 *fake++ = 0x60;
1733 *fake++ = 0x6c;
1734 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1735
1736 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1737 params->channel,
1738 bssid,
1739 0,
1740 capability,
1741 params->beacon_interval,
1742 fake_ie, fake - fake_ie,
1743 0, GFP_KERNEL);
1744 cfg80211_put_bss(bss);
1745
1746 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1747 priv->wdev->ssid_len = params->ssid_len;
1748
1749 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1750
1751 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1752 priv->connect_status = LBS_CONNECTED;
1753 netif_carrier_on(priv->dev);
1754 if (!priv->tx_pending_len)
1755 netif_wake_queue(priv->dev);
1756
1757 lbs_deb_leave(LBS_DEB_CFG80211);
1758 }
1759
1760 static int lbs_ibss_join_existing(struct lbs_private *priv,
1761 struct cfg80211_ibss_params *params,
1762 struct cfg80211_bss *bss)
1763 {
1764 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1765 struct cmd_ds_802_11_ad_hoc_join cmd;
1766 u8 preamble = RADIO_PREAMBLE_SHORT;
1767 int ret = 0;
1768
1769 lbs_deb_enter(LBS_DEB_CFG80211);
1770
1771 /* TODO: set preamble based on scan result */
1772 ret = lbs_set_radio(priv, preamble, 1);
1773 if (ret)
1774 goto out;
1775
1776 /*
1777 * Example CMD_802_11_AD_HOC_JOIN command:
1778 *
1779 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1780 * size 65 00
1781 * sequence xx xx
1782 * result 00 00
1783 * bssid 02 27 27 97 2f 96
1784 * ssid 49 42 53 53 00 00 00 00
1785 * 00 00 00 00 00 00 00 00
1786 * 00 00 00 00 00 00 00 00
1787 * 00 00 00 00 00 00 00 00
1788 * type 02 CMD_BSS_TYPE_IBSS
1789 * beacon period 64 00
1790 * dtim period 00
1791 * timestamp 00 00 00 00 00 00 00 00
1792 * localtime 00 00 00 00 00 00 00 00
1793 * IE DS 03
1794 * IE DS len 01
1795 * IE DS channel 01
1796 * reserveed 00 00 00 00
1797 * IE IBSS 06
1798 * IE IBSS len 02
1799 * IE IBSS atim 00 00
1800 * reserved 00 00 00 00
1801 * capability 02 00
1802 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1803 * fail timeout ff 00
1804 * probe delay 00 00
1805 */
1806 memset(&cmd, 0, sizeof(cmd));
1807 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1808
1809 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1810 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1811 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1812 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1813 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1814 cmd.bss.ds.header.len = 1;
1815 cmd.bss.ds.channel = params->channel->hw_value;
1816 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1817 cmd.bss.ibss.header.len = 2;
1818 cmd.bss.ibss.atimwindow = 0;
1819 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1820
1821 /* set rates to the intersection of our rates and the rates in the
1822 bss */
1823 if (!rates_eid) {
1824 lbs_add_rates(cmd.bss.rates);
1825 } else {
1826 int hw, i;
1827 u8 rates_max = rates_eid[1];
1828 u8 *rates = cmd.bss.rates;
1829 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1830 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1831 for (i = 0; i < rates_max; i++) {
1832 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1833 u8 rate = rates_eid[i+2];
1834 if (rate == 0x02 || rate == 0x04 ||
1835 rate == 0x0b || rate == 0x16)
1836 rate |= 0x80;
1837 *rates++ = rate;
1838 }
1839 }
1840 }
1841 }
1842
1843 /* Only v8 and below support setting this */
1844 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1845 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1846 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1847 }
1848 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1849 if (ret)
1850 goto out;
1851
1852 /*
1853 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1854 *
1855 * response 2c 80
1856 * size 09 00
1857 * sequence xx xx
1858 * result 00 00
1859 * reserved 00
1860 */
1861 lbs_join_post(priv, params, bss->bssid, bss->capability);
1862
1863 out:
1864 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1865 return ret;
1866 }
1867
1868
1869
1870 static int lbs_ibss_start_new(struct lbs_private *priv,
1871 struct cfg80211_ibss_params *params)
1872 {
1873 struct cmd_ds_802_11_ad_hoc_start cmd;
1874 struct cmd_ds_802_11_ad_hoc_result *resp =
1875 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1876 u8 preamble = RADIO_PREAMBLE_SHORT;
1877 int ret = 0;
1878 u16 capability;
1879
1880 lbs_deb_enter(LBS_DEB_CFG80211);
1881
1882 ret = lbs_set_radio(priv, preamble, 1);
1883 if (ret)
1884 goto out;
1885
1886 /*
1887 * Example CMD_802_11_AD_HOC_START command:
1888 *
1889 * command 2b 00 CMD_802_11_AD_HOC_START
1890 * size b1 00
1891 * sequence xx xx
1892 * result 00 00
1893 * ssid 54 45 53 54 00 00 00 00
1894 * 00 00 00 00 00 00 00 00
1895 * 00 00 00 00 00 00 00 00
1896 * 00 00 00 00 00 00 00 00
1897 * bss type 02
1898 * beacon period 64 00
1899 * dtim period 00
1900 * IE IBSS 06
1901 * IE IBSS len 02
1902 * IE IBSS atim 00 00
1903 * reserved 00 00 00 00
1904 * IE DS 03
1905 * IE DS len 01
1906 * IE DS channel 01
1907 * reserved 00 00 00 00
1908 * probe delay 00 00
1909 * capability 02 00
1910 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1911 * 0c 12 18 24 30 48 60 6c
1912 * padding 100 bytes
1913 */
1914 memset(&cmd, 0, sizeof(cmd));
1915 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1916 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1917 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1918 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1919 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1920 cmd.ibss.header.len = 2;
1921 cmd.ibss.atimwindow = 0;
1922 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1923 cmd.ds.header.len = 1;
1924 cmd.ds.channel = params->channel->hw_value;
1925 /* Only v8 and below support setting probe delay */
1926 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1927 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1928 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1929 capability = WLAN_CAPABILITY_IBSS;
1930 cmd.capability = cpu_to_le16(capability);
1931 lbs_add_rates(cmd.rates);
1932
1933
1934 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1935 if (ret)
1936 goto out;
1937
1938 /*
1939 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1940 *
1941 * response 2b 80
1942 * size 14 00
1943 * sequence xx xx
1944 * result 00 00
1945 * reserved 00
1946 * bssid 02 2b 7b 0f 86 0e
1947 */
1948 lbs_join_post(priv, params, resp->bssid, capability);
1949
1950 out:
1951 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1952 return ret;
1953 }
1954
1955
1956 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1957 struct cfg80211_ibss_params *params)
1958 {
1959 struct lbs_private *priv = wiphy_priv(wiphy);
1960 int ret = 0;
1961 struct cfg80211_bss *bss;
1962 DECLARE_SSID_BUF(ssid_buf);
1963
1964 if (dev == priv->mesh_dev)
1965 return -EOPNOTSUPP;
1966
1967 lbs_deb_enter(LBS_DEB_CFG80211);
1968
1969 if (!params->channel) {
1970 ret = -ENOTSUPP;
1971 goto out;
1972 }
1973
1974 ret = lbs_set_channel(priv, params->channel->hw_value);
1975 if (ret)
1976 goto out;
1977
1978 /* Search if someone is beaconing. This assumes that the
1979 * bss list is populated already */
1980 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1981 params->ssid, params->ssid_len,
1982 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1983
1984 if (bss) {
1985 ret = lbs_ibss_join_existing(priv, params, bss);
1986 cfg80211_put_bss(bss);
1987 } else
1988 ret = lbs_ibss_start_new(priv, params);
1989
1990
1991 out:
1992 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1993 return ret;
1994 }
1995
1996
1997 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1998 {
1999 struct lbs_private *priv = wiphy_priv(wiphy);
2000 struct cmd_ds_802_11_ad_hoc_stop cmd;
2001 int ret = 0;
2002
2003 if (dev == priv->mesh_dev)
2004 return -EOPNOTSUPP;
2005
2006 lbs_deb_enter(LBS_DEB_CFG80211);
2007
2008 memset(&cmd, 0, sizeof(cmd));
2009 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2010 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2011
2012 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2013 lbs_mac_event_disconnected(priv);
2014
2015 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2016 return ret;
2017 }
2018
2019
2020
2021
2022 /*
2023 * Initialization
2024 */
2025
2026 static struct cfg80211_ops lbs_cfg80211_ops = {
2027 .set_channel = lbs_cfg_set_channel,
2028 .scan = lbs_cfg_scan,
2029 .connect = lbs_cfg_connect,
2030 .disconnect = lbs_cfg_disconnect,
2031 .add_key = lbs_cfg_add_key,
2032 .del_key = lbs_cfg_del_key,
2033 .set_default_key = lbs_cfg_set_default_key,
2034 .get_station = lbs_cfg_get_station,
2035 .change_virtual_intf = lbs_change_intf,
2036 .join_ibss = lbs_join_ibss,
2037 .leave_ibss = lbs_leave_ibss,
2038 };
2039
2040
2041 /*
2042 * At this time lbs_private *priv doesn't even exist, so we just allocate
2043 * memory and don't initialize the wiphy further. This is postponed until we
2044 * can talk to the firmware and happens at registration time in
2045 * lbs_cfg_wiphy_register().
2046 */
2047 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2048 {
2049 int ret = 0;
2050 struct wireless_dev *wdev;
2051
2052 lbs_deb_enter(LBS_DEB_CFG80211);
2053
2054 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2055 if (!wdev) {
2056 dev_err(dev, "cannot allocate wireless device\n");
2057 return ERR_PTR(-ENOMEM);
2058 }
2059
2060 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2061 if (!wdev->wiphy) {
2062 dev_err(dev, "cannot allocate wiphy\n");
2063 ret = -ENOMEM;
2064 goto err_wiphy_new;
2065 }
2066
2067 lbs_deb_leave(LBS_DEB_CFG80211);
2068 return wdev;
2069
2070 err_wiphy_new:
2071 kfree(wdev);
2072 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2073 return ERR_PTR(ret);
2074 }
2075
2076
2077 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2078 {
2079 struct region_code_mapping {
2080 const char *cn;
2081 int code;
2082 };
2083
2084 /* Section 5.17.2 */
2085 static const struct region_code_mapping regmap[] = {
2086 {"US ", 0x10}, /* US FCC */
2087 {"CA ", 0x20}, /* Canada */
2088 {"EU ", 0x30}, /* ETSI */
2089 {"ES ", 0x31}, /* Spain */
2090 {"FR ", 0x32}, /* France */
2091 {"JP ", 0x40}, /* Japan */
2092 };
2093 size_t i;
2094
2095 lbs_deb_enter(LBS_DEB_CFG80211);
2096
2097 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2098 if (regmap[i].code == priv->regioncode) {
2099 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2100 break;
2101 }
2102
2103 lbs_deb_leave(LBS_DEB_CFG80211);
2104 }
2105
2106
2107 /*
2108 * This function get's called after lbs_setup_firmware() determined the
2109 * firmware capabities. So we can setup the wiphy according to our
2110 * hardware/firmware.
2111 */
2112 int lbs_cfg_register(struct lbs_private *priv)
2113 {
2114 struct wireless_dev *wdev = priv->wdev;
2115 int ret;
2116
2117 lbs_deb_enter(LBS_DEB_CFG80211);
2118
2119 wdev->wiphy->max_scan_ssids = 1;
2120 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2121
2122 wdev->wiphy->interface_modes =
2123 BIT(NL80211_IFTYPE_STATION) |
2124 BIT(NL80211_IFTYPE_ADHOC);
2125 if (lbs_rtap_supported(priv))
2126 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2127 if (lbs_mesh_activated(priv))
2128 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2129
2130 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2131
2132 /*
2133 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2134 * never seen a firmware without WPA
2135 */
2136 wdev->wiphy->cipher_suites = cipher_suites;
2137 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2138 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2139
2140 ret = wiphy_register(wdev->wiphy);
2141 if (ret < 0)
2142 pr_err("cannot register wiphy device\n");
2143
2144 priv->wiphy_registered = true;
2145
2146 ret = register_netdev(priv->dev);
2147 if (ret)
2148 pr_err("cannot register network device\n");
2149
2150 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2151
2152 lbs_cfg_set_regulatory_hint(priv);
2153
2154 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2155 return ret;
2156 }
2157
2158 int lbs_reg_notifier(struct wiphy *wiphy,
2159 struct regulatory_request *request)
2160 {
2161 struct lbs_private *priv = wiphy_priv(wiphy);
2162 int ret;
2163
2164 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2165 "callback for domain %c%c\n", request->alpha2[0],
2166 request->alpha2[1]);
2167
2168 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2169
2170 lbs_deb_leave(LBS_DEB_CFG80211);
2171 return ret;
2172 }
2173
2174 void lbs_scan_deinit(struct lbs_private *priv)
2175 {
2176 lbs_deb_enter(LBS_DEB_CFG80211);
2177 cancel_delayed_work_sync(&priv->scan_work);
2178 }
2179
2180
2181 void lbs_cfg_free(struct lbs_private *priv)
2182 {
2183 struct wireless_dev *wdev = priv->wdev;
2184
2185 lbs_deb_enter(LBS_DEB_CFG80211);
2186
2187 if (!wdev)
2188 return;
2189
2190 if (priv->wiphy_registered)
2191 wiphy_unregister(wdev->wiphy);
2192
2193 if (wdev->wiphy)
2194 wiphy_free(wdev->wiphy);
2195
2196 kfree(wdev);
2197 }
Linux kernel - Deliverables
This page took 0.0791190000000001 seconds and 5 git commands to generate.