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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / net / wireless / libertas / cfg.c
blob85b3169c40d70148593a81e4f98f242d04e01d21
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 cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
489 int bsssize;
490 const u8 *pos;
491 const u8 *tsfdesc;
492 int tsfsize;
493 int i;
494 int ret = -EILSEQ;
495
496 lbs_deb_enter(LBS_DEB_CFG80211);
497
498 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
499
500 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
501 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
502
503 if (scanresp->nr_sets == 0) {
504 ret = 0;
505 goto done;
506 }
507
508 /*
509 * The general layout of the scan response is described in chapter
510 * 5.7.1. Basically we have a common part, then any number of BSS
511 * descriptor sections. Finally we have section with the same number
512 * of TSFs.
513 *
514 * cmd_ds_802_11_scan_rsp
515 * cmd_header
516 * pos_size
517 * nr_sets
518 * bssdesc 1
519 * bssid
520 * rssi
521 * timestamp
522 * intvl
523 * capa
524 * IEs
525 * bssdesc 2
526 * bssdesc n
527 * MrvlIEtypes_TsfFimestamp_t
528 * TSF for BSS 1
529 * TSF for BSS 2
530 * TSF for BSS n
531 */
532
533 pos = scanresp->bssdesc_and_tlvbuffer;
534
535 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
536 scanresp->bssdescriptsize);
537
538 tsfdesc = pos + bsssize;
539 tsfsize = 4 + 8 * scanresp->nr_sets;
540 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
541
542 /* Validity check: we expect a Marvell-Local TLV */
543 i = get_unaligned_le16(tsfdesc);
544 tsfdesc += 2;
545 if (i != TLV_TYPE_TSFTIMESTAMP) {
546 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
547 goto done;
548 }
549
550 /*
551 * Validity check: the TLV holds TSF values with 8 bytes each, so
552 * the size in the TLV must match the nr_sets value
553 */
554 i = get_unaligned_le16(tsfdesc);
555 tsfdesc += 2;
556 if (i / 8 != scanresp->nr_sets) {
557 lbs_deb_scan("scan response: invalid number of TSF timestamp "
558 "sets (expected %d got %d)\n", scanresp->nr_sets,
559 i / 8);
560 goto done;
561 }
562
563 for (i = 0; i < scanresp->nr_sets; i++) {
564 const u8 *bssid;
565 const u8 *ie;
566 int left;
567 int ielen;
568 int rssi;
569 u16 intvl;
570 u16 capa;
571 int chan_no = -1;
572 const u8 *ssid = NULL;
573 u8 ssid_len = 0;
574 DECLARE_SSID_BUF(ssid_buf);
575
576 int len = get_unaligned_le16(pos);
577 pos += 2;
578
579 /* BSSID */
580 bssid = pos;
581 pos += ETH_ALEN;
582 /* RSSI */
583 rssi = *pos++;
584 /* Packet time stamp */
585 pos += 8;
586 /* Beacon interval */
587 intvl = get_unaligned_le16(pos);
588 pos += 2;
589 /* Capabilities */
590 capa = get_unaligned_le16(pos);
591 pos += 2;
592
593 /* To find out the channel, we must parse the IEs */
594 ie = pos;
595 /*
596 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
597 * interval, capabilities
598 */
599 ielen = left = len - (6 + 1 + 8 + 2 + 2);
600 while (left >= 2) {
601 u8 id, elen;
602 id = *pos++;
603 elen = *pos++;
604 left -= 2;
605 if (elen > left || elen == 0) {
606 lbs_deb_scan("scan response: invalid IE fmt\n");
607 goto done;
608 }
609
610 if (id == WLAN_EID_DS_PARAMS)
611 chan_no = *pos;
612 if (id == WLAN_EID_SSID) {
613 ssid = pos;
614 ssid_len = elen;
615 }
616 left -= elen;
617 pos += elen;
618 }
619
620 /* No channel, no luck */
621 if (chan_no != -1) {
622 struct wiphy *wiphy = priv->wdev->wiphy;
623 int freq = ieee80211_channel_to_frequency(chan_no,
624 IEEE80211_BAND_2GHZ);
625 struct ieee80211_channel *channel =
626 ieee80211_get_channel(wiphy, freq);
627
628 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
629 "%d dBm\n",
630 bssid, capa, chan_no,
631 print_ssid(ssid_buf, ssid, ssid_len),
632 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
633
634 if (channel &&
635 !(channel->flags & IEEE80211_CHAN_DISABLED))
636 cfg80211_inform_bss(wiphy, channel,
637 bssid, le64_to_cpu(*(__le64 *)tsfdesc),
638 capa, intvl, ie, ielen,
639 LBS_SCAN_RSSI_TO_MBM(rssi),
640 GFP_KERNEL);
641 } else
642 lbs_deb_scan("scan response: missing BSS channel IE\n");
643
644 tsfdesc += 8;
645 }
646 ret = 0;
647
648 done:
649 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
650 return ret;
651 }
652
653
654 /*
655 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
656 * TLV and a rates TLV. Determine the maximum size of them:
657 */
658 #define LBS_SCAN_MAX_CMD_SIZE \
659 (sizeof(struct cmd_ds_802_11_scan) \
660 + LBS_MAX_SSID_TLV_SIZE \
661 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
662 + LBS_MAX_RATES_TLV_SIZE)
663
664 /*
665 * Assumes priv->scan_req is initialized and valid
666 * Assumes priv->scan_channel is initialized
667 */
668 static void lbs_scan_worker(struct work_struct *work)
669 {
670 struct lbs_private *priv =
671 container_of(work, struct lbs_private, scan_work.work);
672 struct cmd_ds_802_11_scan *scan_cmd;
673 u8 *tlv; /* pointer into our current, growing TLV storage area */
674 int last_channel;
675 int running, carrier;
676
677 lbs_deb_enter(LBS_DEB_SCAN);
678
679 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
680 if (scan_cmd == NULL)
681 goto out_no_scan_cmd;
682
683 /* prepare fixed part of scan command */
684 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
685
686 /* stop network while we're away from our main channel */
687 running = !netif_queue_stopped(priv->dev);
688 carrier = netif_carrier_ok(priv->dev);
689 if (running)
690 netif_stop_queue(priv->dev);
691 if (carrier)
692 netif_carrier_off(priv->dev);
693
694 /* prepare fixed part of scan command */
695 tlv = scan_cmd->tlvbuffer;
696
697 /* add SSID TLV */
698 if (priv->scan_req->n_ssids)
699 tlv += lbs_add_ssid_tlv(tlv,
700 priv->scan_req->ssids[0].ssid,
701 priv->scan_req->ssids[0].ssid_len);
702
703 /* add channel TLVs */
704 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
705 if (last_channel > priv->scan_req->n_channels)
706 last_channel = priv->scan_req->n_channels;
707 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
708 priv->scan_req->n_ssids);
709
710 /* add rates TLV */
711 tlv += lbs_add_supported_rates_tlv(tlv);
712
713 if (priv->scan_channel < priv->scan_req->n_channels) {
714 cancel_delayed_work(&priv->scan_work);
715 if (netif_running(priv->dev))
716 queue_delayed_work(priv->work_thread, &priv->scan_work,
717 msecs_to_jiffies(300));
718 }
719
720 /* This is the final data we are about to send */
721 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
722 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
723 sizeof(*scan_cmd));
724 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
725 tlv - scan_cmd->tlvbuffer);
726
727 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
728 le16_to_cpu(scan_cmd->hdr.size),
729 lbs_ret_scan, 0);
730
731 if (priv->scan_channel >= priv->scan_req->n_channels) {
732 /* Mark scan done */
733 if (priv->internal_scan)
734 kfree(priv->scan_req);
735 else
736 cfg80211_scan_done(priv->scan_req, false);
737
738 priv->scan_req = NULL;
739 priv->last_scan = jiffies;
740 }
741
742 /* Restart network */
743 if (carrier)
744 netif_carrier_on(priv->dev);
745 if (running && !priv->tx_pending_len)
746 netif_wake_queue(priv->dev);
747
748 kfree(scan_cmd);
749
750 /* Wake up anything waiting on scan completion */
751 if (priv->scan_req == NULL) {
752 lbs_deb_scan("scan: waking up waiters\n");
753 wake_up_all(&priv->scan_q);
754 }
755
756 out_no_scan_cmd:
757 lbs_deb_leave(LBS_DEB_SCAN);
758 }
759
760 static void _internal_start_scan(struct lbs_private *priv, bool internal,
761 struct cfg80211_scan_request *request)
762 {
763 lbs_deb_enter(LBS_DEB_CFG80211);
764
765 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
766 request->n_ssids, request->n_channels, request->ie_len);
767
768 priv->scan_channel = 0;
769 queue_delayed_work(priv->work_thread, &priv->scan_work,
770 msecs_to_jiffies(50));
771
772 priv->scan_req = request;
773 priv->internal_scan = internal;
774
775 lbs_deb_leave(LBS_DEB_CFG80211);
776 }
777
778 static int lbs_cfg_scan(struct wiphy *wiphy,
779 struct net_device *dev,
780 struct cfg80211_scan_request *request)
781 {
782 struct lbs_private *priv = wiphy_priv(wiphy);
783 int ret = 0;
784
785 lbs_deb_enter(LBS_DEB_CFG80211);
786
787 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
788 /* old scan request not yet processed */
789 ret = -EAGAIN;
790 goto out;
791 }
792
793 _internal_start_scan(priv, false, request);
794
795 if (priv->surpriseremoved)
796 ret = -EIO;
797
798 out:
799 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
800 return ret;
801 }
802
803
804
805
806 /*
807 * Events
808 */
809
810 void lbs_send_disconnect_notification(struct lbs_private *priv)
811 {
812 lbs_deb_enter(LBS_DEB_CFG80211);
813
814 cfg80211_disconnected(priv->dev,
815 0,
816 NULL, 0,
817 GFP_KERNEL);
818
819 lbs_deb_leave(LBS_DEB_CFG80211);
820 }
821
822 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
823 {
824 lbs_deb_enter(LBS_DEB_CFG80211);
825
826 cfg80211_michael_mic_failure(priv->dev,
827 priv->assoc_bss,
828 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
829 NL80211_KEYTYPE_GROUP :
830 NL80211_KEYTYPE_PAIRWISE,
831 -1,
832 NULL,
833 GFP_KERNEL);
834
835 lbs_deb_leave(LBS_DEB_CFG80211);
836 }
837
838
839
840
841 /*
842 * Connect/disconnect
843 */
844
845
846 /*
847 * This removes all WEP keys
848 */
849 static int lbs_remove_wep_keys(struct lbs_private *priv)
850 {
851 struct cmd_ds_802_11_set_wep cmd;
852 int ret;
853
854 lbs_deb_enter(LBS_DEB_CFG80211);
855
856 memset(&cmd, 0, sizeof(cmd));
857 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
858 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
859 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
860
861 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
862
863 lbs_deb_leave(LBS_DEB_CFG80211);
864 return ret;
865 }
866
867 /*
868 * Set WEP keys
869 */
870 static int lbs_set_wep_keys(struct lbs_private *priv)
871 {
872 struct cmd_ds_802_11_set_wep cmd;
873 int i;
874 int ret;
875
876 lbs_deb_enter(LBS_DEB_CFG80211);
877
878 /*
879 * command 13 00
880 * size 50 00
881 * sequence xx xx
882 * result 00 00
883 * action 02 00 ACT_ADD
884 * transmit key 00 00
885 * type for key 1 01 WEP40
886 * type for key 2 00
887 * type for key 3 00
888 * type for key 4 00
889 * key 1 39 39 39 39 39 00 00 00
890 * 00 00 00 00 00 00 00 00
891 * key 2 00 00 00 00 00 00 00 00
892 * 00 00 00 00 00 00 00 00
893 * key 3 00 00 00 00 00 00 00 00
894 * 00 00 00 00 00 00 00 00
895 * key 4 00 00 00 00 00 00 00 00
896 */
897 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
898 priv->wep_key_len[2] || priv->wep_key_len[3]) {
899 /* Only set wep keys if we have at least one of them */
900 memset(&cmd, 0, sizeof(cmd));
901 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
902 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
903 cmd.action = cpu_to_le16(CMD_ACT_ADD);
904
905 for (i = 0; i < 4; i++) {
906 switch (priv->wep_key_len[i]) {
907 case WLAN_KEY_LEN_WEP40:
908 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
909 break;
910 case WLAN_KEY_LEN_WEP104:
911 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
912 break;
913 default:
914 cmd.keytype[i] = 0;
915 break;
916 }
917 memcpy(cmd.keymaterial[i], priv->wep_key[i],
918 priv->wep_key_len[i]);
919 }
920
921 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
922 } else {
923 /* Otherwise remove all wep keys */
924 ret = lbs_remove_wep_keys(priv);
925 }
926
927 lbs_deb_leave(LBS_DEB_CFG80211);
928 return ret;
929 }
930
931
932 /*
933 * Enable/Disable RSN status
934 */
935 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
936 {
937 struct cmd_ds_802_11_enable_rsn cmd;
938 int ret;
939
940 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
941
942 /*
943 * cmd 2f 00
944 * size 0c 00
945 * sequence xx xx
946 * result 00 00
947 * action 01 00 ACT_SET
948 * enable 01 00
949 */
950 memset(&cmd, 0, sizeof(cmd));
951 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
952 cmd.action = cpu_to_le16(CMD_ACT_SET);
953 cmd.enable = cpu_to_le16(enable);
954
955 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
956
957 lbs_deb_leave(LBS_DEB_CFG80211);
958 return ret;
959 }
960
961
962 /*
963 * Set WPA/WPA key material
964 */
965
966 /*
967 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
968 * get rid of WEXT, this should go into host.h
969 */
970
971 struct cmd_key_material {
972 struct cmd_header hdr;
973
974 __le16 action;
975 struct MrvlIEtype_keyParamSet param;
976 } __packed;
977
978 static int lbs_set_key_material(struct lbs_private *priv,
979 int key_type,
980 int key_info,
981 u8 *key, u16 key_len)
982 {
983 struct cmd_key_material cmd;
984 int ret;
985
986 lbs_deb_enter(LBS_DEB_CFG80211);
987
988 /*
989 * Example for WPA (TKIP):
990 *
991 * cmd 5e 00
992 * size 34 00
993 * sequence xx xx
994 * result 00 00
995 * action 01 00
996 * TLV type 00 01 key param
997 * length 00 26
998 * key type 01 00 TKIP
999 * key info 06 00 UNICAST | ENABLED
1000 * key len 20 00
1001 * key 32 bytes
1002 */
1003 memset(&cmd, 0, sizeof(cmd));
1004 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1005 cmd.action = cpu_to_le16(CMD_ACT_SET);
1006 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1007 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1008 cmd.param.keytypeid = cpu_to_le16(key_type);
1009 cmd.param.keyinfo = cpu_to_le16(key_info);
1010 cmd.param.keylen = cpu_to_le16(key_len);
1011 if (key && key_len)
1012 memcpy(cmd.param.key, key, key_len);
1013
1014 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1015
1016 lbs_deb_leave(LBS_DEB_CFG80211);
1017 return ret;
1018 }
1019
1020
1021 /*
1022 * Sets the auth type (open, shared, etc) in the firmware. That
1023 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1024 * command doesn't send an authentication frame at all, it just
1025 * stores the auth_type.
1026 */
1027 static int lbs_set_authtype(struct lbs_private *priv,
1028 struct cfg80211_connect_params *sme)
1029 {
1030 struct cmd_ds_802_11_authenticate cmd;
1031 int ret;
1032
1033 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1034
1035 /*
1036 * cmd 11 00
1037 * size 19 00
1038 * sequence xx xx
1039 * result 00 00
1040 * BSS id 00 13 19 80 da 30
1041 * auth type 00
1042 * reserved 00 00 00 00 00 00 00 00 00 00
1043 */
1044 memset(&cmd, 0, sizeof(cmd));
1045 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1046 if (sme->bssid)
1047 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1048 /* convert auth_type */
1049 ret = lbs_auth_to_authtype(sme->auth_type);
1050 if (ret < 0)
1051 goto done;
1052
1053 cmd.authtype = ret;
1054 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1055
1056 done:
1057 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1058 return ret;
1059 }
1060
1061
1062 /*
1063 * Create association request
1064 */
1065 #define LBS_ASSOC_MAX_CMD_SIZE \
1066 (sizeof(struct cmd_ds_802_11_associate) \
1067 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1068 + LBS_MAX_SSID_TLV_SIZE \
1069 + LBS_MAX_CHANNEL_TLV_SIZE \
1070 + LBS_MAX_CF_PARAM_TLV_SIZE \
1071 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1072 + LBS_MAX_WPA_TLV_SIZE)
1073
1074 static int lbs_associate(struct lbs_private *priv,
1075 struct cfg80211_bss *bss,
1076 struct cfg80211_connect_params *sme)
1077 {
1078 struct cmd_ds_802_11_associate_response *resp;
1079 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1080 GFP_KERNEL);
1081 const u8 *ssid_eid;
1082 size_t len, resp_ie_len;
1083 int status;
1084 int ret;
1085 u8 *pos = &(cmd->iebuf[0]);
1086 u8 *tmp;
1087
1088 lbs_deb_enter(LBS_DEB_CFG80211);
1089
1090 if (!cmd) {
1091 ret = -ENOMEM;
1092 goto done;
1093 }
1094
1095 /*
1096 * cmd 50 00
1097 * length 34 00
1098 * sequence xx xx
1099 * result 00 00
1100 * BSS id 00 13 19 80 da 30
1101 * capabilities 11 00
1102 * listen interval 0a 00
1103 * beacon interval 00 00
1104 * DTIM period 00
1105 * TLVs xx (up to 512 bytes)
1106 */
1107 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1108
1109 /* Fill in static fields */
1110 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1111 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1112 cmd->capability = cpu_to_le16(bss->capability);
1113
1114 /* add SSID TLV */
1115 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1116 if (ssid_eid)
1117 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1118 else
1119 lbs_deb_assoc("no SSID\n");
1120
1121 /* add DS param TLV */
1122 if (bss->channel)
1123 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1124 else
1125 lbs_deb_assoc("no channel\n");
1126
1127 /* add (empty) CF param TLV */
1128 pos += lbs_add_cf_param_tlv(pos);
1129
1130 /* add rates TLV */
1131 tmp = pos + 4; /* skip Marvell IE header */
1132 pos += lbs_add_common_rates_tlv(pos, bss);
1133 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1134
1135 /* add auth type TLV */
1136 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1137 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1138
1139 /* add WPA/WPA2 TLV */
1140 if (sme->ie && sme->ie_len)
1141 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1142
1143 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1144 (u16)(pos - (u8 *) &cmd->iebuf);
1145 cmd->hdr.size = cpu_to_le16(len);
1146
1147 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1148 le16_to_cpu(cmd->hdr.size));
1149
1150 /* store for later use */
1151 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1152
1153 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1154 if (ret)
1155 goto done;
1156
1157 /* generate connect message to cfg80211 */
1158
1159 resp = (void *) cmd; /* recast for easier field access */
1160 status = le16_to_cpu(resp->statuscode);
1161
1162 /* Older FW versions map the IEEE 802.11 Status Code in the association
1163 * response to the following values returned in resp->statuscode:
1164 *
1165 * IEEE Status Code Marvell Status Code
1166 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1167 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1168 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1169 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1170 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1171 * others -> 0x0003 ASSOC_RESULT_REFUSED
1172 *
1173 * Other response codes:
1174 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1175 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1176 * association response from the AP)
1177 */
1178 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1179 switch (status) {
1180 case 0:
1181 break;
1182 case 1:
1183 lbs_deb_assoc("invalid association parameters\n");
1184 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1185 break;
1186 case 2:
1187 lbs_deb_assoc("timer expired while waiting for AP\n");
1188 status = WLAN_STATUS_AUTH_TIMEOUT;
1189 break;
1190 case 3:
1191 lbs_deb_assoc("association refused by AP\n");
1192 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1193 break;
1194 case 4:
1195 lbs_deb_assoc("authentication refused by AP\n");
1196 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1197 break;
1198 default:
1199 lbs_deb_assoc("association failure %d\n", status);
1200 /* v5 OLPC firmware does return the AP status code if
1201 * it's not one of the values above. Let that through.
1202 */
1203 break;
1204 }
1205 }
1206
1207 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1208 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1209 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1210
1211 resp_ie_len = le16_to_cpu(resp->hdr.size)
1212 - sizeof(resp->hdr)
1213 - 6;
1214 cfg80211_connect_result(priv->dev,
1215 priv->assoc_bss,
1216 sme->ie, sme->ie_len,
1217 resp->iebuf, resp_ie_len,
1218 status,
1219 GFP_KERNEL);
1220
1221 if (status == 0) {
1222 /* TODO: get rid of priv->connect_status */
1223 priv->connect_status = LBS_CONNECTED;
1224 netif_carrier_on(priv->dev);
1225 if (!priv->tx_pending_len)
1226 netif_tx_wake_all_queues(priv->dev);
1227 }
1228
1229 done:
1230 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1231 return ret;
1232 }
1233
1234 static struct cfg80211_scan_request *
1235 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1236 {
1237 struct cfg80211_scan_request *creq = NULL;
1238 int i, n_channels = 0;
1239 enum ieee80211_band band;
1240
1241 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1242 if (wiphy->bands[band])
1243 n_channels += wiphy->bands[band]->n_channels;
1244 }
1245
1246 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1247 n_channels * sizeof(void *),
1248 GFP_ATOMIC);
1249 if (!creq)
1250 return NULL;
1251
1252 /* SSIDs come after channels */
1253 creq->ssids = (void *)&creq->channels[n_channels];
1254 creq->n_channels = n_channels;
1255 creq->n_ssids = 1;
1256
1257 /* Scan all available channels */
1258 i = 0;
1259 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1260 int j;
1261
1262 if (!wiphy->bands[band])
1263 continue;
1264
1265 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1266 /* ignore disabled channels */
1267 if (wiphy->bands[band]->channels[j].flags &
1268 IEEE80211_CHAN_DISABLED)
1269 continue;
1270
1271 creq->channels[i] = &wiphy->bands[band]->channels[j];
1272 i++;
1273 }
1274 }
1275 if (i) {
1276 /* Set real number of channels specified in creq->channels[] */
1277 creq->n_channels = i;
1278
1279 /* Scan for the SSID we're going to connect to */
1280 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1281 creq->ssids[0].ssid_len = sme->ssid_len;
1282 } else {
1283 /* No channels found... */
1284 kfree(creq);
1285 creq = NULL;
1286 }
1287
1288 return creq;
1289 }
1290
1291 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1292 struct cfg80211_connect_params *sme)
1293 {
1294 struct lbs_private *priv = wiphy_priv(wiphy);
1295 struct cfg80211_bss *bss = NULL;
1296 int ret = 0;
1297 u8 preamble = RADIO_PREAMBLE_SHORT;
1298
1299 if (dev == priv->mesh_dev)
1300 return -EOPNOTSUPP;
1301
1302 lbs_deb_enter(LBS_DEB_CFG80211);
1303
1304 if (!sme->bssid) {
1305 /* Run a scan if one isn't in-progress already and if the last
1306 * scan was done more than 2 seconds ago.
1307 */
1308 if (priv->scan_req == NULL &&
1309 time_after(jiffies, priv->last_scan + (2 * HZ))) {
1310 struct cfg80211_scan_request *creq;
1311
1312 creq = _new_connect_scan_req(wiphy, sme);
1313 if (!creq) {
1314 ret = -EINVAL;
1315 goto done;
1316 }
1317
1318 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1319 _internal_start_scan(priv, true, creq);
1320 }
1321
1322 /* Wait for any in-progress scan to complete */
1323 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1324 wait_event_interruptible_timeout(priv->scan_q,
1325 (priv->scan_req == NULL),
1326 (15 * HZ));
1327 lbs_deb_assoc("assoc: scanning competed\n");
1328 }
1329
1330 /* Find the BSS we want using available scan results */
1331 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1332 sme->ssid, sme->ssid_len,
1333 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1334 if (!bss) {
1335 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1336 sme->bssid);
1337 ret = -ENOENT;
1338 goto done;
1339 }
1340 lbs_deb_assoc("trying %pM\n", bss->bssid);
1341 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1342 sme->crypto.cipher_group,
1343 sme->key_idx, sme->key_len);
1344
1345 /* As this is a new connection, clear locally stored WEP keys */
1346 priv->wep_tx_key = 0;
1347 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1348 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1349
1350 /* set/remove WEP keys */
1351 switch (sme->crypto.cipher_group) {
1352 case WLAN_CIPHER_SUITE_WEP40:
1353 case WLAN_CIPHER_SUITE_WEP104:
1354 /* Store provided WEP keys in priv-> */
1355 priv->wep_tx_key = sme->key_idx;
1356 priv->wep_key_len[sme->key_idx] = sme->key_len;
1357 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1358 /* Set WEP keys and WEP mode */
1359 lbs_set_wep_keys(priv);
1360 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1361 lbs_set_mac_control(priv);
1362 /* No RSN mode for WEP */
1363 lbs_enable_rsn(priv, 0);
1364 break;
1365 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1366 /*
1367 * If we don't have no WEP, no WPA and no WPA2,
1368 * we remove all keys like in the WPA/WPA2 setup,
1369 * we just don't set RSN.
1370 *
1371 * Therefore: fall-through
1372 */
1373 case WLAN_CIPHER_SUITE_TKIP:
1374 case WLAN_CIPHER_SUITE_CCMP:
1375 /* Remove WEP keys and WEP mode */
1376 lbs_remove_wep_keys(priv);
1377 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1378 lbs_set_mac_control(priv);
1379
1380 /* clear the WPA/WPA2 keys */
1381 lbs_set_key_material(priv,
1382 KEY_TYPE_ID_WEP, /* doesn't matter */
1383 KEY_INFO_WPA_UNICAST,
1384 NULL, 0);
1385 lbs_set_key_material(priv,
1386 KEY_TYPE_ID_WEP, /* doesn't matter */
1387 KEY_INFO_WPA_MCAST,
1388 NULL, 0);
1389 /* RSN mode for WPA/WPA2 */
1390 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1391 break;
1392 default:
1393 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1394 sme->crypto.cipher_group);
1395 ret = -ENOTSUPP;
1396 goto done;
1397 }
1398
1399 lbs_set_authtype(priv, sme);
1400 lbs_set_radio(priv, preamble, 1);
1401
1402 /* Do the actual association */
1403 ret = lbs_associate(priv, bss, sme);
1404
1405 done:
1406 if (bss)
1407 cfg80211_put_bss(bss);
1408 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1409 return ret;
1410 }
1411
1412 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1413 {
1414 struct cmd_ds_802_11_deauthenticate cmd;
1415 int ret;
1416
1417 memset(&cmd, 0, sizeof(cmd));
1418 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1419 /* Mildly ugly to use a locally store my own BSSID ... */
1420 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1421 cmd.reasoncode = cpu_to_le16(reason);
1422
1423 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1424 if (ret)
1425 return ret;
1426
1427 cfg80211_disconnected(priv->dev,
1428 reason,
1429 NULL, 0,
1430 GFP_KERNEL);
1431 priv->connect_status = LBS_DISCONNECTED;
1432
1433 return 0;
1434 }
1435
1436 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1437 u16 reason_code)
1438 {
1439 struct lbs_private *priv = wiphy_priv(wiphy);
1440
1441 if (dev == priv->mesh_dev)
1442 return -EOPNOTSUPP;
1443
1444 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1445
1446 /* store for lbs_cfg_ret_disconnect() */
1447 priv->disassoc_reason = reason_code;
1448
1449 return lbs_disconnect(priv, reason_code);
1450 }
1451
1452 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1453 struct net_device *netdev,
1454 u8 key_index, bool unicast,
1455 bool multicast)
1456 {
1457 struct lbs_private *priv = wiphy_priv(wiphy);
1458
1459 if (netdev == priv->mesh_dev)
1460 return -EOPNOTSUPP;
1461
1462 lbs_deb_enter(LBS_DEB_CFG80211);
1463
1464 if (key_index != priv->wep_tx_key) {
1465 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1466 priv->wep_tx_key = key_index;
1467 lbs_set_wep_keys(priv);
1468 }
1469
1470 return 0;
1471 }
1472
1473
1474 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1475 u8 idx, bool pairwise, const u8 *mac_addr,
1476 struct key_params *params)
1477 {
1478 struct lbs_private *priv = wiphy_priv(wiphy);
1479 u16 key_info;
1480 u16 key_type;
1481 int ret = 0;
1482
1483 if (netdev == priv->mesh_dev)
1484 return -EOPNOTSUPP;
1485
1486 lbs_deb_enter(LBS_DEB_CFG80211);
1487
1488 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1489 params->cipher, mac_addr);
1490 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1491 idx, params->key_len);
1492 if (params->key_len)
1493 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1494 params->key, params->key_len);
1495
1496 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1497 if (params->seq_len)
1498 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1499 params->seq, params->seq_len);
1500
1501 switch (params->cipher) {
1502 case WLAN_CIPHER_SUITE_WEP40:
1503 case WLAN_CIPHER_SUITE_WEP104:
1504 /* actually compare if something has changed ... */
1505 if ((priv->wep_key_len[idx] != params->key_len) ||
1506 memcmp(priv->wep_key[idx],
1507 params->key, params->key_len) != 0) {
1508 priv->wep_key_len[idx] = params->key_len;
1509 memcpy(priv->wep_key[idx],
1510 params->key, params->key_len);
1511 lbs_set_wep_keys(priv);
1512 }
1513 break;
1514 case WLAN_CIPHER_SUITE_TKIP:
1515 case WLAN_CIPHER_SUITE_CCMP:
1516 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1517 ? KEY_INFO_WPA_UNICAST
1518 : KEY_INFO_WPA_MCAST);
1519 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1520 ? KEY_TYPE_ID_TKIP
1521 : KEY_TYPE_ID_AES;
1522 lbs_set_key_material(priv,
1523 key_type,
1524 key_info,
1525 params->key, params->key_len);
1526 break;
1527 default:
1528 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1529 ret = -ENOTSUPP;
1530 break;
1531 }
1532
1533 return ret;
1534 }
1535
1536
1537 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1538 u8 key_index, bool pairwise, const u8 *mac_addr)
1539 {
1540
1541 lbs_deb_enter(LBS_DEB_CFG80211);
1542
1543 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1544 key_index, mac_addr);
1545
1546 #ifdef TODO
1547 struct lbs_private *priv = wiphy_priv(wiphy);
1548 /*
1549 * I think can keep this a NO-OP, because:
1550
1551 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1552 * - neither "iw" nor "wpa_supplicant" won't call this during
1553 * an ongoing connection
1554 * - TODO: but I have to check if this is still true when
1555 * I set the AP to periodic re-keying
1556 * - we've not kzallec() something when we've added a key at
1557 * lbs_cfg_connect() or lbs_cfg_add_key().
1558 *
1559 * This causes lbs_cfg_del_key() only called at disconnect time,
1560 * where we'd just waste time deleting a key that is not going
1561 * to be used anyway.
1562 */
1563 if (key_index < 3 && priv->wep_key_len[key_index]) {
1564 priv->wep_key_len[key_index] = 0;
1565 lbs_set_wep_keys(priv);
1566 }
1567 #endif
1568
1569 return 0;
1570 }
1571
1572
1573 /*
1574 * Get station
1575 */
1576
1577 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1578 u8 *mac, struct station_info *sinfo)
1579 {
1580 struct lbs_private *priv = wiphy_priv(wiphy);
1581 s8 signal, noise;
1582 int ret;
1583 size_t i;
1584
1585 lbs_deb_enter(LBS_DEB_CFG80211);
1586
1587 sinfo->filled |= STATION_INFO_TX_BYTES |
1588 STATION_INFO_TX_PACKETS |
1589 STATION_INFO_RX_BYTES |
1590 STATION_INFO_RX_PACKETS;
1591 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1592 sinfo->tx_packets = priv->dev->stats.tx_packets;
1593 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1594 sinfo->rx_packets = priv->dev->stats.rx_packets;
1595
1596 /* Get current RSSI */
1597 ret = lbs_get_rssi(priv, &signal, &noise);
1598 if (ret == 0) {
1599 sinfo->signal = signal;
1600 sinfo->filled |= STATION_INFO_SIGNAL;
1601 }
1602
1603 /* Convert priv->cur_rate from hw_value to NL80211 value */
1604 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1605 if (priv->cur_rate == lbs_rates[i].hw_value) {
1606 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1607 sinfo->filled |= STATION_INFO_TX_BITRATE;
1608 break;
1609 }
1610 }
1611
1612 return 0;
1613 }
1614
1615
1616
1617
1618 /*
1619 * "Site survey", here just current channel and noise level
1620 */
1621
1622 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1623 int idx, struct survey_info *survey)
1624 {
1625 struct lbs_private *priv = wiphy_priv(wiphy);
1626 s8 signal, noise;
1627 int ret;
1628
1629 if (dev == priv->mesh_dev)
1630 return -EOPNOTSUPP;
1631
1632 if (idx != 0)
1633 ret = -ENOENT;
1634
1635 lbs_deb_enter(LBS_DEB_CFG80211);
1636
1637 survey->channel = ieee80211_get_channel(wiphy,
1638 ieee80211_channel_to_frequency(priv->channel,
1639 IEEE80211_BAND_2GHZ));
1640
1641 ret = lbs_get_rssi(priv, &signal, &noise);
1642 if (ret == 0) {
1643 survey->filled = SURVEY_INFO_NOISE_DBM;
1644 survey->noise = noise;
1645 }
1646
1647 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1648 return ret;
1649 }
1650
1651
1652
1653
1654 /*
1655 * Change interface
1656 */
1657
1658 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1659 enum nl80211_iftype type, u32 *flags,
1660 struct vif_params *params)
1661 {
1662 struct lbs_private *priv = wiphy_priv(wiphy);
1663 int ret = 0;
1664
1665 if (dev == priv->mesh_dev)
1666 return -EOPNOTSUPP;
1667
1668 lbs_deb_enter(LBS_DEB_CFG80211);
1669
1670 switch (type) {
1671 case NL80211_IFTYPE_MONITOR:
1672 ret = lbs_set_monitor_mode(priv, 1);
1673 break;
1674 case NL80211_IFTYPE_STATION:
1675 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1676 ret = lbs_set_monitor_mode(priv, 0);
1677 if (!ret)
1678 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1679 break;
1680 case NL80211_IFTYPE_ADHOC:
1681 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1682 ret = lbs_set_monitor_mode(priv, 0);
1683 if (!ret)
1684 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1685 break;
1686 default:
1687 ret = -ENOTSUPP;
1688 }
1689
1690 if (!ret)
1691 priv->wdev->iftype = type;
1692
1693 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1694 return ret;
1695 }
1696
1697
1698
1699 /*
1700 * IBSS (Ad-Hoc)
1701 */
1702
1703 /*
1704 * The firmware needs the following bits masked out of the beacon-derived
1705 * capability field when associating/joining to a BSS:
1706 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1707 */
1708 #define CAPINFO_MASK (~(0xda00))
1709
1710
1711 static void lbs_join_post(struct lbs_private *priv,
1712 struct cfg80211_ibss_params *params,
1713 u8 *bssid, u16 capability)
1714 {
1715 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1716 2 + 4 + /* basic rates */
1717 2 + 1 + /* DS parameter */
1718 2 + 2 + /* atim */
1719 2 + 8]; /* extended rates */
1720 u8 *fake = fake_ie;
1721
1722 lbs_deb_enter(LBS_DEB_CFG80211);
1723
1724 /*
1725 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1726 * the real IE from the firmware. So we fabricate a fake IE based on
1727 * what the firmware actually sends (sniffed with wireshark).
1728 */
1729 /* Fake SSID IE */
1730 *fake++ = WLAN_EID_SSID;
1731 *fake++ = params->ssid_len;
1732 memcpy(fake, params->ssid, params->ssid_len);
1733 fake += params->ssid_len;
1734 /* Fake supported basic rates IE */
1735 *fake++ = WLAN_EID_SUPP_RATES;
1736 *fake++ = 4;
1737 *fake++ = 0x82;
1738 *fake++ = 0x84;
1739 *fake++ = 0x8b;
1740 *fake++ = 0x96;
1741 /* Fake DS channel IE */
1742 *fake++ = WLAN_EID_DS_PARAMS;
1743 *fake++ = 1;
1744 *fake++ = params->channel->hw_value;
1745 /* Fake IBSS params IE */
1746 *fake++ = WLAN_EID_IBSS_PARAMS;
1747 *fake++ = 2;
1748 *fake++ = 0; /* ATIM=0 */
1749 *fake++ = 0;
1750 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1751 * but I don't know how this could be checked */
1752 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1753 *fake++ = 8;
1754 *fake++ = 0x0c;
1755 *fake++ = 0x12;
1756 *fake++ = 0x18;
1757 *fake++ = 0x24;
1758 *fake++ = 0x30;
1759 *fake++ = 0x48;
1760 *fake++ = 0x60;
1761 *fake++ = 0x6c;
1762 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1763
1764 cfg80211_inform_bss(priv->wdev->wiphy,
1765 params->channel,
1766 bssid,
1767 0,
1768 capability,
1769 params->beacon_interval,
1770 fake_ie, fake - fake_ie,
1771 0, GFP_KERNEL);
1772
1773 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1774 priv->wdev->ssid_len = params->ssid_len;
1775
1776 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1777
1778 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1779 priv->connect_status = LBS_CONNECTED;
1780 netif_carrier_on(priv->dev);
1781 if (!priv->tx_pending_len)
1782 netif_wake_queue(priv->dev);
1783
1784 lbs_deb_leave(LBS_DEB_CFG80211);
1785 }
1786
1787 static int lbs_ibss_join_existing(struct lbs_private *priv,
1788 struct cfg80211_ibss_params *params,
1789 struct cfg80211_bss *bss)
1790 {
1791 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1792 struct cmd_ds_802_11_ad_hoc_join cmd;
1793 u8 preamble = RADIO_PREAMBLE_SHORT;
1794 int ret = 0;
1795
1796 lbs_deb_enter(LBS_DEB_CFG80211);
1797
1798 /* TODO: set preamble based on scan result */
1799 ret = lbs_set_radio(priv, preamble, 1);
1800 if (ret)
1801 goto out;
1802
1803 /*
1804 * Example CMD_802_11_AD_HOC_JOIN command:
1805 *
1806 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1807 * size 65 00
1808 * sequence xx xx
1809 * result 00 00
1810 * bssid 02 27 27 97 2f 96
1811 * ssid 49 42 53 53 00 00 00 00
1812 * 00 00 00 00 00 00 00 00
1813 * 00 00 00 00 00 00 00 00
1814 * 00 00 00 00 00 00 00 00
1815 * type 02 CMD_BSS_TYPE_IBSS
1816 * beacon period 64 00
1817 * dtim period 00
1818 * timestamp 00 00 00 00 00 00 00 00
1819 * localtime 00 00 00 00 00 00 00 00
1820 * IE DS 03
1821 * IE DS len 01
1822 * IE DS channel 01
1823 * reserveed 00 00 00 00
1824 * IE IBSS 06
1825 * IE IBSS len 02
1826 * IE IBSS atim 00 00
1827 * reserved 00 00 00 00
1828 * capability 02 00
1829 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1830 * fail timeout ff 00
1831 * probe delay 00 00
1832 */
1833 memset(&cmd, 0, sizeof(cmd));
1834 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1835
1836 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1837 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1838 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1839 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1840 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1841 cmd.bss.ds.header.len = 1;
1842 cmd.bss.ds.channel = params->channel->hw_value;
1843 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1844 cmd.bss.ibss.header.len = 2;
1845 cmd.bss.ibss.atimwindow = 0;
1846 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1847
1848 /* set rates to the intersection of our rates and the rates in the
1849 bss */
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
1870 /* Only v8 and below support setting this */
1871 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1872 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1873 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1874 }
1875 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1876 if (ret)
1877 goto out;
1878
1879 /*
1880 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1881 *
1882 * response 2c 80
1883 * size 09 00
1884 * sequence xx xx
1885 * result 00 00
1886 * reserved 00
1887 */
1888 lbs_join_post(priv, params, bss->bssid, bss->capability);
1889
1890 out:
1891 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1892 return ret;
1893 }
1894
1895
1896
1897 static int lbs_ibss_start_new(struct lbs_private *priv,
1898 struct cfg80211_ibss_params *params)
1899 {
1900 struct cmd_ds_802_11_ad_hoc_start cmd;
1901 struct cmd_ds_802_11_ad_hoc_result *resp =
1902 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1903 u8 preamble = RADIO_PREAMBLE_SHORT;
1904 int ret = 0;
1905 u16 capability;
1906
1907 lbs_deb_enter(LBS_DEB_CFG80211);
1908
1909 ret = lbs_set_radio(priv, preamble, 1);
1910 if (ret)
1911 goto out;
1912
1913 /*
1914 * Example CMD_802_11_AD_HOC_START command:
1915 *
1916 * command 2b 00 CMD_802_11_AD_HOC_START
1917 * size b1 00
1918 * sequence xx xx
1919 * result 00 00
1920 * ssid 54 45 53 54 00 00 00 00
1921 * 00 00 00 00 00 00 00 00
1922 * 00 00 00 00 00 00 00 00
1923 * 00 00 00 00 00 00 00 00
1924 * bss type 02
1925 * beacon period 64 00
1926 * dtim period 00
1927 * IE IBSS 06
1928 * IE IBSS len 02
1929 * IE IBSS atim 00 00
1930 * reserved 00 00 00 00
1931 * IE DS 03
1932 * IE DS len 01
1933 * IE DS channel 01
1934 * reserved 00 00 00 00
1935 * probe delay 00 00
1936 * capability 02 00
1937 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1938 * 0c 12 18 24 30 48 60 6c
1939 * padding 100 bytes
1940 */
1941 memset(&cmd, 0, sizeof(cmd));
1942 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1943 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1944 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1945 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1946 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1947 cmd.ibss.header.len = 2;
1948 cmd.ibss.atimwindow = 0;
1949 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1950 cmd.ds.header.len = 1;
1951 cmd.ds.channel = params->channel->hw_value;
1952 /* Only v8 and below support setting probe delay */
1953 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1954 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1955 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1956 capability = WLAN_CAPABILITY_IBSS;
1957 cmd.capability = cpu_to_le16(capability);
1958 lbs_add_rates(cmd.rates);
1959
1960
1961 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1962 if (ret)
1963 goto out;
1964
1965 /*
1966 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1967 *
1968 * response 2b 80
1969 * size 14 00
1970 * sequence xx xx
1971 * result 00 00
1972 * reserved 00
1973 * bssid 02 2b 7b 0f 86 0e
1974 */
1975 lbs_join_post(priv, params, resp->bssid, capability);
1976
1977 out:
1978 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1979 return ret;
1980 }
1981
1982
1983 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1984 struct cfg80211_ibss_params *params)
1985 {
1986 struct lbs_private *priv = wiphy_priv(wiphy);
1987 int ret = 0;
1988 struct cfg80211_bss *bss;
1989 DECLARE_SSID_BUF(ssid_buf);
1990
1991 if (dev == priv->mesh_dev)
1992 return -EOPNOTSUPP;
1993
1994 lbs_deb_enter(LBS_DEB_CFG80211);
1995
1996 if (!params->channel) {
1997 ret = -ENOTSUPP;
1998 goto out;
1999 }
2000
2001 ret = lbs_set_channel(priv, params->channel->hw_value);
2002 if (ret)
2003 goto out;
2004
2005 /* Search if someone is beaconing. This assumes that the
2006 * bss list is populated already */
2007 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2008 params->ssid, params->ssid_len,
2009 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2010
2011 if (bss) {
2012 ret = lbs_ibss_join_existing(priv, params, bss);
2013 cfg80211_put_bss(bss);
2014 } else
2015 ret = lbs_ibss_start_new(priv, params);
2016
2017
2018 out:
2019 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2020 return ret;
2021 }
2022
2023
2024 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2025 {
2026 struct lbs_private *priv = wiphy_priv(wiphy);
2027 struct cmd_ds_802_11_ad_hoc_stop cmd;
2028 int ret = 0;
2029
2030 if (dev == priv->mesh_dev)
2031 return -EOPNOTSUPP;
2032
2033 lbs_deb_enter(LBS_DEB_CFG80211);
2034
2035 memset(&cmd, 0, sizeof(cmd));
2036 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2037 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2038
2039 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2040 lbs_mac_event_disconnected(priv);
2041
2042 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2043 return ret;
2044 }
2045
2046
2047
2048
2049 /*
2050 * Initialization
2051 */
2052
2053 static struct cfg80211_ops lbs_cfg80211_ops = {
2054 .set_channel = lbs_cfg_set_channel,
2055 .scan = lbs_cfg_scan,
2056 .connect = lbs_cfg_connect,
2057 .disconnect = lbs_cfg_disconnect,
2058 .add_key = lbs_cfg_add_key,
2059 .del_key = lbs_cfg_del_key,
2060 .set_default_key = lbs_cfg_set_default_key,
2061 .get_station = lbs_cfg_get_station,
2062 .dump_survey = lbs_get_survey,
2063 .change_virtual_intf = lbs_change_intf,
2064 .join_ibss = lbs_join_ibss,
2065 .leave_ibss = lbs_leave_ibss,
2066 };
2067
2068
2069 /*
2070 * At this time lbs_private *priv doesn't even exist, so we just allocate
2071 * memory and don't initialize the wiphy further. This is postponed until we
2072 * can talk to the firmware and happens at registration time in
2073 * lbs_cfg_wiphy_register().
2074 */
2075 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2076 {
2077 int ret = 0;
2078 struct wireless_dev *wdev;
2079
2080 lbs_deb_enter(LBS_DEB_CFG80211);
2081
2082 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2083 if (!wdev) {
2084 dev_err(dev, "cannot allocate wireless device\n");
2085 return ERR_PTR(-ENOMEM);
2086 }
2087
2088 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2089 if (!wdev->wiphy) {
2090 dev_err(dev, "cannot allocate wiphy\n");
2091 ret = -ENOMEM;
2092 goto err_wiphy_new;
2093 }
2094
2095 lbs_deb_leave(LBS_DEB_CFG80211);
2096 return wdev;
2097
2098 err_wiphy_new:
2099 kfree(wdev);
2100 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2101 return ERR_PTR(ret);
2102 }
2103
2104
2105 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2106 {
2107 struct region_code_mapping {
2108 const char *cn;
2109 int code;
2110 };
2111
2112 /* Section 5.17.2 */
2113 static const struct region_code_mapping regmap[] = {
2114 {"US ", 0x10}, /* US FCC */
2115 {"CA ", 0x20}, /* Canada */
2116 {"EU ", 0x30}, /* ETSI */
2117 {"ES ", 0x31}, /* Spain */
2118 {"FR ", 0x32}, /* France */
2119 {"JP ", 0x40}, /* Japan */
2120 };
2121 size_t i;
2122
2123 lbs_deb_enter(LBS_DEB_CFG80211);
2124
2125 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2126 if (regmap[i].code == priv->regioncode) {
2127 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2128 break;
2129 }
2130
2131 lbs_deb_leave(LBS_DEB_CFG80211);
2132 }
2133
2134
2135 /*
2136 * This function get's called after lbs_setup_firmware() determined the
2137 * firmware capabities. So we can setup the wiphy according to our
2138 * hardware/firmware.
2139 */
2140 int lbs_cfg_register(struct lbs_private *priv)
2141 {
2142 struct wireless_dev *wdev = priv->wdev;
2143 int ret;
2144
2145 lbs_deb_enter(LBS_DEB_CFG80211);
2146
2147 wdev->wiphy->max_scan_ssids = 1;
2148 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2149
2150 wdev->wiphy->interface_modes =
2151 BIT(NL80211_IFTYPE_STATION) |
2152 BIT(NL80211_IFTYPE_ADHOC);
2153 if (lbs_rtap_supported(priv))
2154 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2155 if (lbs_mesh_activated(priv))
2156 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2157
2158 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2159
2160 /*
2161 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2162 * never seen a firmware without WPA
2163 */
2164 wdev->wiphy->cipher_suites = cipher_suites;
2165 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2166 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2167
2168 ret = wiphy_register(wdev->wiphy);
2169 if (ret < 0)
2170 pr_err("cannot register wiphy device\n");
2171
2172 priv->wiphy_registered = true;
2173
2174 ret = register_netdev(priv->dev);
2175 if (ret)
2176 pr_err("cannot register network device\n");
2177
2178 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2179
2180 lbs_cfg_set_regulatory_hint(priv);
2181
2182 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2183 return ret;
2184 }
2185
2186 int lbs_reg_notifier(struct wiphy *wiphy,
2187 struct regulatory_request *request)
2188 {
2189 struct lbs_private *priv = wiphy_priv(wiphy);
2190 int ret;
2191
2192 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2193 "callback for domain %c%c\n", request->alpha2[0],
2194 request->alpha2[1]);
2195
2196 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2197
2198 lbs_deb_leave(LBS_DEB_CFG80211);
2199 return ret;
2200 }
2201
2202 void lbs_scan_deinit(struct lbs_private *priv)
2203 {
2204 lbs_deb_enter(LBS_DEB_CFG80211);
2205 cancel_delayed_work_sync(&priv->scan_work);
2206 }
2207
2208
2209 void lbs_cfg_free(struct lbs_private *priv)
2210 {
2211 struct wireless_dev *wdev = priv->wdev;
2212
2213 lbs_deb_enter(LBS_DEB_CFG80211);
2214
2215 if (!wdev)
2216 return;
2217
2218 if (priv->wiphy_registered)
2219 wiphy_unregister(wdev->wiphy);
2220
2221 if (wdev->wiphy)
2222 wiphy_free(wdev->wiphy);
2223
2224 kfree(wdev);
2225 }
linux-next