]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/net/wireless/libertas/cfg.c
projects / mirror_ubuntu-zesty-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[mirror_ubuntu-zesty-kernel.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 #include <linux/slab.h>
10 #include <linux/if_arp.h>
11 #include <linux/ieee80211.h>
12 #include <net/cfg80211.h>
13 #include <asm/unaligned.h>
14
15 #include "decl.h"
16 #include "cfg.h"
17 #include "cmd.h"
18
19
20 #define CHAN2G(_channel, _freq, _flags) { \
21 .band = IEEE80211_BAND_2GHZ, \
22 .center_freq = (_freq), \
23 .hw_value = (_channel), \
24 .flags = (_flags), \
25 .max_antenna_gain = 0, \
26 .max_power = 30, \
27 }
28
29 static struct ieee80211_channel lbs_2ghz_channels[] = {
30 CHAN2G(1, 2412, 0),
31 CHAN2G(2, 2417, 0),
32 CHAN2G(3, 2422, 0),
33 CHAN2G(4, 2427, 0),
34 CHAN2G(5, 2432, 0),
35 CHAN2G(6, 2437, 0),
36 CHAN2G(7, 2442, 0),
37 CHAN2G(8, 2447, 0),
38 CHAN2G(9, 2452, 0),
39 CHAN2G(10, 2457, 0),
40 CHAN2G(11, 2462, 0),
41 CHAN2G(12, 2467, 0),
42 CHAN2G(13, 2472, 0),
43 CHAN2G(14, 2484, 0),
44 };
45
46 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
47 .bitrate = (_rate), \
48 .hw_value = (_hw_value), \
49 .flags = (_flags), \
50 }
51
52
53 /* Table 6 in section 3.2.1.1 */
54 static struct ieee80211_rate lbs_rates[] = {
55 RATETAB_ENT(10, 0, 0),
56 RATETAB_ENT(20, 1, 0),
57 RATETAB_ENT(55, 2, 0),
58 RATETAB_ENT(110, 3, 0),
59 RATETAB_ENT(60, 9, 0),
60 RATETAB_ENT(90, 6, 0),
61 RATETAB_ENT(120, 7, 0),
62 RATETAB_ENT(180, 8, 0),
63 RATETAB_ENT(240, 9, 0),
64 RATETAB_ENT(360, 10, 0),
65 RATETAB_ENT(480, 11, 0),
66 RATETAB_ENT(540, 12, 0),
67 };
68
69 static struct ieee80211_supported_band lbs_band_2ghz = {
70 .channels = lbs_2ghz_channels,
71 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
72 .bitrates = lbs_rates,
73 .n_bitrates = ARRAY_SIZE(lbs_rates),
74 };
75
76
77 static const u32 cipher_suites[] = {
78 WLAN_CIPHER_SUITE_WEP40,
79 WLAN_CIPHER_SUITE_WEP104,
80 WLAN_CIPHER_SUITE_TKIP,
81 WLAN_CIPHER_SUITE_CCMP,
82 };
83
84 /* Time to stay on the channel */
85 #define LBS_DWELL_PASSIVE 100
86 #define LBS_DWELL_ACTIVE 40
87
88
89 /***************************************************************************
90 * Misc utility functions
91 *
92 * TLVs are Marvell specific. They are very similar to IEs, they have the
93 * same structure: type, length, data*. The only difference: for IEs, the
94 * type and length are u8, but for TLVs they're __le16.
95 */
96
97 /*
98 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
99 * in the firmware spec
100 */
101 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
102 {
103 int ret = -ENOTSUPP;
104
105 switch (auth_type) {
106 case NL80211_AUTHTYPE_OPEN_SYSTEM:
107 case NL80211_AUTHTYPE_SHARED_KEY:
108 ret = auth_type;
109 break;
110 case NL80211_AUTHTYPE_AUTOMATIC:
111 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
112 break;
113 case NL80211_AUTHTYPE_NETWORK_EAP:
114 ret = 0x80;
115 break;
116 default:
117 /* silence compiler */
118 break;
119 }
120 return ret;
121 }
122
123
124 /* Various firmware commands need the list of supported rates, but with
125 the hight-bit set for basic rates */
126 static int lbs_add_rates(u8 *rates)
127 {
128 size_t i;
129
130 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
131 u8 rate = lbs_rates[i].bitrate / 5;
132 if (rate == 0x02 || rate == 0x04 ||
133 rate == 0x0b || rate == 0x16)
134 rate |= 0x80;
135 rates[i] = rate;
136 }
137 return ARRAY_SIZE(lbs_rates);
138 }
139
140
141 /***************************************************************************
142 * TLV utility functions
143 *
144 * TLVs are Marvell specific. They are very similar to IEs, they have the
145 * same structure: type, length, data*. The only difference: for IEs, the
146 * type and length are u8, but for TLVs they're __le16.
147 */
148
149
150 /*
151 * Add ssid TLV
152 */
153 #define LBS_MAX_SSID_TLV_SIZE \
154 (sizeof(struct mrvl_ie_header) \
155 + IEEE80211_MAX_SSID_LEN)
156
157 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
158 {
159 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
160
161 /*
162 * TLV-ID SSID 00 00
163 * length 06 00
164 * ssid 4d 4e 54 45 53 54
165 */
166 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
167 ssid_tlv->header.len = cpu_to_le16(ssid_len);
168 memcpy(ssid_tlv->ssid, ssid, ssid_len);
169 return sizeof(ssid_tlv->header) + ssid_len;
170 }
171
172
173 /*
174 * Add channel list TLV (section 8.4.2)
175 *
176 * Actual channel data comes from priv->wdev->wiphy->channels.
177 */
178 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
179 (sizeof(struct mrvl_ie_header) \
180 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
181
182 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
183 int last_channel, int active_scan)
184 {
185 int chanscanparamsize = sizeof(struct chanscanparamset) *
186 (last_channel - priv->scan_channel);
187
188 struct mrvl_ie_header *header = (void *) tlv;
189
190 /*
191 * TLV-ID CHANLIST 01 01
192 * length 0e 00
193 * channel 00 01 00 00 00 64 00
194 * radio type 00
195 * channel 01
196 * scan type 00
197 * min scan time 00 00
198 * max scan time 64 00
199 * channel 2 00 02 00 00 00 64 00
200 *
201 */
202
203 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
204 header->len = cpu_to_le16(chanscanparamsize);
205 tlv += sizeof(struct mrvl_ie_header);
206
207 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
208 last_channel); */
209 memset(tlv, 0, chanscanparamsize);
210
211 while (priv->scan_channel < last_channel) {
212 struct chanscanparamset *param = (void *) tlv;
213
214 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
215 param->channumber =
216 priv->scan_req->channels[priv->scan_channel]->hw_value;
217 if (active_scan) {
218 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
219 } else {
220 param->chanscanmode.passivescan = 1;
221 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
222 }
223 tlv += sizeof(struct chanscanparamset);
224 priv->scan_channel++;
225 }
226 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
227 }
228
229
230 /*
231 * Add rates TLV
232 *
233 * The rates are in lbs_bg_rates[], but for the 802.11b
234 * rates the high bit is set. We add this TLV only because
235 * there's a firmware which otherwise doesn't report all
236 * APs in range.
237 */
238 #define LBS_MAX_RATES_TLV_SIZE \
239 (sizeof(struct mrvl_ie_header) \
240 + (ARRAY_SIZE(lbs_rates)))
241
242 /* Adds a TLV with all rates the hardware supports */
243 static int lbs_add_supported_rates_tlv(u8 *tlv)
244 {
245 size_t i;
246 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
247
248 /*
249 * TLV-ID RATES 01 00
250 * length 0e 00
251 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
252 */
253 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
254 tlv += sizeof(rate_tlv->header);
255 i = lbs_add_rates(tlv);
256 tlv += i;
257 rate_tlv->header.len = cpu_to_le16(i);
258 return sizeof(rate_tlv->header) + i;
259 }
260
261
262 /*
263 * Adds a TLV with all rates the hardware *and* BSS supports.
264 */
265 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
266 {
267 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
268 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
269 int n;
270
271 /*
272 * 01 00 TLV_TYPE_RATES
273 * 04 00 len
274 * 82 84 8b 96 rates
275 */
276 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
277 tlv += sizeof(rate_tlv->header);
278
279 if (!rates_eid) {
280 /* Fallback: add basic 802.11b rates */
281 *tlv++ = 0x82;
282 *tlv++ = 0x84;
283 *tlv++ = 0x8b;
284 *tlv++ = 0x96;
285 n = 4;
286 } else {
287 int hw, ap;
288 u8 ap_max = rates_eid[1];
289 n = 0;
290 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
291 u8 hw_rate = lbs_rates[hw].bitrate / 5;
292 for (ap = 0; ap < ap_max; ap++) {
293 if (hw_rate == (rates_eid[ap+2] & 0x7f)) {
294 *tlv++ = rates_eid[ap+2];
295 n++;
296 }
297 }
298 }
299 }
300
301 rate_tlv->header.len = cpu_to_le16(n);
302 return sizeof(rate_tlv->header) + n;
303 }
304
305
306 /*
307 * Add auth type TLV.
308 *
309 * This is only needed for newer firmware (V9 and up).
310 */
311 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
312 sizeof(struct mrvl_ie_auth_type)
313
314 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
315 {
316 struct mrvl_ie_auth_type *auth = (void *) tlv;
317
318 /*
319 * 1f 01 TLV_TYPE_AUTH_TYPE
320 * 01 00 len
321 * 01 auth type
322 */
323 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
324 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
325 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
326 return sizeof(*auth);
327 }
328
329
330 /*
331 * Add channel (phy ds) TLV
332 */
333 #define LBS_MAX_CHANNEL_TLV_SIZE \
334 sizeof(struct mrvl_ie_header)
335
336 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
337 {
338 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
339
340 /*
341 * 03 00 TLV_TYPE_PHY_DS
342 * 01 00 len
343 * 06 channel
344 */
345 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
346 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
347 ds->channel = channel;
348 return sizeof(*ds);
349 }
350
351
352 /*
353 * Add (empty) CF param TLV of the form:
354 */
355 #define LBS_MAX_CF_PARAM_TLV_SIZE \
356 sizeof(struct mrvl_ie_header)
357
358 static int lbs_add_cf_param_tlv(u8 *tlv)
359 {
360 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
361
362 /*
363 * 04 00 TLV_TYPE_CF
364 * 06 00 len
365 * 00 cfpcnt
366 * 00 cfpperiod
367 * 00 00 cfpmaxduration
368 * 00 00 cfpdurationremaining
369 */
370 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
371 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
372 return sizeof(*cf);
373 }
374
375 /*
376 * Add WPA TLV
377 */
378 #define LBS_MAX_WPA_TLV_SIZE \
379 (sizeof(struct mrvl_ie_header) \
380 + 128 /* TODO: I guessed the size */)
381
382 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
383 {
384 size_t tlv_len;
385
386 /*
387 * We need just convert an IE to an TLV. IEs use u8 for the header,
388 * u8 type
389 * u8 len
390 * u8[] data
391 * but TLVs use __le16 instead:
392 * __le16 type
393 * __le16 len
394 * u8[] data
395 */
396 *tlv++ = *ie++;
397 *tlv++ = 0;
398 tlv_len = *tlv++ = *ie++;
399 *tlv++ = 0;
400 while (tlv_len--)
401 *tlv++ = *ie++;
402 /* the TLV is two bytes larger than the IE */
403 return ie_len + 2;
404 }
405
406 /***************************************************************************
407 * Set Channel
408 */
409
410 static int lbs_cfg_set_channel(struct wiphy *wiphy,
411 struct net_device *netdev,
412 struct ieee80211_channel *channel,
413 enum nl80211_channel_type channel_type)
414 {
415 struct lbs_private *priv = wiphy_priv(wiphy);
416 int ret = -ENOTSUPP;
417
418 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
419 channel->center_freq, channel_type);
420
421 if (channel_type != NL80211_CHAN_NO_HT)
422 goto out;
423
424 ret = lbs_set_channel(priv, channel->hw_value);
425
426 out:
427 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
428 return ret;
429 }
430
431
432
433 /***************************************************************************
434 * Scanning
435 */
436
437 /*
438 * When scanning, the firmware doesn't send a nul packet with the power-safe
439 * bit to the AP. So we cannot stay away from our current channel too long,
440 * otherwise we loose data. So take a "nap" while scanning every other
441 * while.
442 */
443 #define LBS_SCAN_BEFORE_NAP 4
444
445
446 /*
447 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
448 * which isn't really an RSSI, as it becomes larger when moving away from
449 * the AP. Anyway, we need to convert that into mBm.
450 */
451 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
452 ((-(int)rssi + 3)*100)
453
454 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
455 struct cmd_header *resp)
456 {
457 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
458 int bsssize;
459 const u8 *pos;
460 u16 nr_sets;
461 const u8 *tsfdesc;
462 int tsfsize;
463 int i;
464 int ret = -EILSEQ;
465
466 lbs_deb_enter(LBS_DEB_CFG80211);
467
468 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
469 nr_sets = le16_to_cpu(resp->size);
470
471 /*
472 * The general layout of the scan response is described in chapter
473 * 5.7.1. Basically we have a common part, then any number of BSS
474 * descriptor sections. Finally we have section with the same number
475 * of TSFs.
476 *
477 * cmd_ds_802_11_scan_rsp
478 * cmd_header
479 * pos_size
480 * nr_sets
481 * bssdesc 1
482 * bssid
483 * rssi
484 * timestamp
485 * intvl
486 * capa
487 * IEs
488 * bssdesc 2
489 * bssdesc n
490 * MrvlIEtypes_TsfFimestamp_t
491 * TSF for BSS 1
492 * TSF for BSS 2
493 * TSF for BSS n
494 */
495
496 pos = scanresp->bssdesc_and_tlvbuffer;
497
498 tsfdesc = pos + bsssize;
499 tsfsize = 4 + 8 * scanresp->nr_sets;
500
501 /* Validity check: we expect a Marvell-Local TLV */
502 i = get_unaligned_le16(tsfdesc);
503 tsfdesc += 2;
504 if (i != TLV_TYPE_TSFTIMESTAMP)
505 goto done;
506 /* Validity check: the TLV holds TSF values with 8 bytes each, so
507 * the size in the TLV must match the nr_sets value */
508 i = get_unaligned_le16(tsfdesc);
509 tsfdesc += 2;
510 if (i / 8 != scanresp->nr_sets)
511 goto done;
512
513 for (i = 0; i < scanresp->nr_sets; i++) {
514 const u8 *bssid;
515 const u8 *ie;
516 int left;
517 int ielen;
518 int rssi;
519 u16 intvl;
520 u16 capa;
521 int chan_no = -1;
522 const u8 *ssid = NULL;
523 u8 ssid_len = 0;
524 DECLARE_SSID_BUF(ssid_buf);
525
526 int len = get_unaligned_le16(pos);
527 pos += 2;
528
529 /* BSSID */
530 bssid = pos;
531 pos += ETH_ALEN;
532 /* RSSI */
533 rssi = *pos++;
534 /* Packet time stamp */
535 pos += 8;
536 /* Beacon interval */
537 intvl = get_unaligned_le16(pos);
538 pos += 2;
539 /* Capabilities */
540 capa = get_unaligned_le16(pos);
541 pos += 2;
542
543 /* To find out the channel, we must parse the IEs */
544 ie = pos;
545 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
546 interval, capabilities */
547 ielen = left = len - (6 + 1 + 8 + 2 + 2);
548 while (left >= 2) {
549 u8 id, elen;
550 id = *pos++;
551 elen = *pos++;
552 left -= 2;
553 if (elen > left || elen == 0)
554 goto done;
555 if (id == WLAN_EID_DS_PARAMS)
556 chan_no = *pos;
557 if (id == WLAN_EID_SSID) {
558 ssid = pos;
559 ssid_len = elen;
560 }
561 left -= elen;
562 pos += elen;
563 }
564
565 /* No channel, no luck */
566 if (chan_no != -1) {
567 struct wiphy *wiphy = priv->wdev->wiphy;
568 int freq = ieee80211_channel_to_frequency(chan_no);
569 struct ieee80211_channel *channel =
570 ieee80211_get_channel(wiphy, freq);
571
572 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
573 "%d dBm\n",
574 bssid, capa, chan_no,
575 print_ssid(ssid_buf, ssid, ssid_len),
576 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
577
578 if (channel ||
579 !(channel->flags & IEEE80211_CHAN_DISABLED))
580 cfg80211_inform_bss(wiphy, channel,
581 bssid, le64_to_cpu(*(__le64 *)tsfdesc),
582 capa, intvl, ie, ielen,
583 LBS_SCAN_RSSI_TO_MBM(rssi),
584 GFP_KERNEL);
585 }
586 tsfdesc += 8;
587 }
588 ret = 0;
589
590 done:
591 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
592 return ret;
593 }
594
595
596 /*
597 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
598 * TLV and a rates TLV. Determine the maximum size of them:
599 */
600 #define LBS_SCAN_MAX_CMD_SIZE \
601 (sizeof(struct cmd_ds_802_11_scan) \
602 + LBS_MAX_SSID_TLV_SIZE \
603 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
604 + LBS_MAX_RATES_TLV_SIZE)
605
606 /*
607 * Assumes priv->scan_req is initialized and valid
608 * Assumes priv->scan_channel is initialized
609 */
610 static void lbs_scan_worker(struct work_struct *work)
611 {
612 struct lbs_private *priv =
613 container_of(work, struct lbs_private, scan_work.work);
614 struct cmd_ds_802_11_scan *scan_cmd;
615 u8 *tlv; /* pointer into our current, growing TLV storage area */
616 int last_channel;
617 int running, carrier;
618
619 lbs_deb_enter(LBS_DEB_SCAN);
620
621 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
622 if (scan_cmd == NULL)
623 goto out_no_scan_cmd;
624
625 /* prepare fixed part of scan command */
626 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
627
628 /* stop network while we're away from our main channel */
629 running = !netif_queue_stopped(priv->dev);
630 carrier = netif_carrier_ok(priv->dev);
631 if (running)
632 netif_stop_queue(priv->dev);
633 if (carrier)
634 netif_carrier_off(priv->dev);
635
636 /* prepare fixed part of scan command */
637 tlv = scan_cmd->tlvbuffer;
638
639 /* add SSID TLV */
640 if (priv->scan_req->n_ssids)
641 tlv += lbs_add_ssid_tlv(tlv,
642 priv->scan_req->ssids[0].ssid,
643 priv->scan_req->ssids[0].ssid_len);
644
645 /* add channel TLVs */
646 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
647 if (last_channel > priv->scan_req->n_channels)
648 last_channel = priv->scan_req->n_channels;
649 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
650 priv->scan_req->n_ssids);
651
652 /* add rates TLV */
653 tlv += lbs_add_supported_rates_tlv(tlv);
654
655 if (priv->scan_channel < priv->scan_req->n_channels) {
656 cancel_delayed_work(&priv->scan_work);
657 queue_delayed_work(priv->work_thread, &priv->scan_work,
658 msecs_to_jiffies(300));
659 }
660
661 /* This is the final data we are about to send */
662 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
663 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
664 sizeof(*scan_cmd));
665 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
666 tlv - scan_cmd->tlvbuffer);
667
668 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
669 le16_to_cpu(scan_cmd->hdr.size),
670 lbs_ret_scan, 0);
671
672 if (priv->scan_channel >= priv->scan_req->n_channels) {
673 /* Mark scan done */
674 cfg80211_scan_done(priv->scan_req, false);
675 priv->scan_req = NULL;
676 }
677
678 /* Restart network */
679 if (carrier)
680 netif_carrier_on(priv->dev);
681 if (running && !priv->tx_pending_len)
682 netif_wake_queue(priv->dev);
683
684 kfree(scan_cmd);
685
686 out_no_scan_cmd:
687 lbs_deb_leave(LBS_DEB_SCAN);
688 }
689
690
691 static int lbs_cfg_scan(struct wiphy *wiphy,
692 struct net_device *dev,
693 struct cfg80211_scan_request *request)
694 {
695 struct lbs_private *priv = wiphy_priv(wiphy);
696 int ret = 0;
697
698 lbs_deb_enter(LBS_DEB_CFG80211);
699
700 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
701 /* old scan request not yet processed */
702 ret = -EAGAIN;
703 goto out;
704 }
705
706 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
707 request->n_ssids, request->n_channels, request->ie_len);
708
709 priv->scan_channel = 0;
710 queue_delayed_work(priv->work_thread, &priv->scan_work,
711 msecs_to_jiffies(50));
712
713 if (priv->surpriseremoved)
714 ret = -EIO;
715
716 priv->scan_req = request;
717
718 out:
719 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
720 return ret;
721 }
722
723
724
725
726 /***************************************************************************
727 * Events
728 */
729
730 void lbs_send_disconnect_notification(struct lbs_private *priv)
731 {
732 lbs_deb_enter(LBS_DEB_CFG80211);
733
734 cfg80211_disconnected(priv->dev,
735 0,
736 NULL, 0,
737 GFP_KERNEL);
738
739 lbs_deb_leave(LBS_DEB_CFG80211);
740 }
741
742 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
743 {
744 lbs_deb_enter(LBS_DEB_CFG80211);
745
746 cfg80211_michael_mic_failure(priv->dev,
747 priv->assoc_bss,
748 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
749 NL80211_KEYTYPE_GROUP :
750 NL80211_KEYTYPE_PAIRWISE,
751 -1,
752 NULL,
753 GFP_KERNEL);
754
755 lbs_deb_leave(LBS_DEB_CFG80211);
756 }
757
758
759
760
761 /***************************************************************************
762 * Connect/disconnect
763 */
764
765
766 /*
767 * This removes all WEP keys
768 */
769 static int lbs_remove_wep_keys(struct lbs_private *priv)
770 {
771 struct cmd_ds_802_11_set_wep cmd;
772 int ret;
773
774 lbs_deb_enter(LBS_DEB_CFG80211);
775
776 memset(&cmd, 0, sizeof(cmd));
777 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
778 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
779 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
780
781 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
782
783 lbs_deb_leave(LBS_DEB_CFG80211);
784 return ret;
785 }
786
787 /*
788 * Set WEP keys
789 */
790 static int lbs_set_wep_keys(struct lbs_private *priv)
791 {
792 struct cmd_ds_802_11_set_wep cmd;
793 int i;
794 int ret;
795
796 lbs_deb_enter(LBS_DEB_CFG80211);
797
798 /*
799 * command 13 00
800 * size 50 00
801 * sequence xx xx
802 * result 00 00
803 * action 02 00 ACT_ADD
804 * transmit key 00 00
805 * type for key 1 01 WEP40
806 * type for key 2 00
807 * type for key 3 00
808 * type for key 4 00
809 * key 1 39 39 39 39 39 00 00 00
810 * 00 00 00 00 00 00 00 00
811 * key 2 00 00 00 00 00 00 00 00
812 * 00 00 00 00 00 00 00 00
813 * key 3 00 00 00 00 00 00 00 00
814 * 00 00 00 00 00 00 00 00
815 * key 4 00 00 00 00 00 00 00 00
816 */
817 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
818 priv->wep_key_len[2] || priv->wep_key_len[3]) {
819 /* Only set wep keys if we have at least one of them */
820 memset(&cmd, 0, sizeof(cmd));
821 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
822 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
823 cmd.action = cpu_to_le16(CMD_ACT_ADD);
824
825 for (i = 0; i < 4; i++) {
826 switch (priv->wep_key_len[i]) {
827 case WLAN_KEY_LEN_WEP40:
828 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
829 break;
830 case WLAN_KEY_LEN_WEP104:
831 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
832 break;
833 default:
834 cmd.keytype[i] = 0;
835 break;
836 }
837 memcpy(cmd.keymaterial[i], priv->wep_key[i],
838 priv->wep_key_len[i]);
839 }
840
841 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
842 } else {
843 /* Otherwise remove all wep keys */
844 ret = lbs_remove_wep_keys(priv);
845 }
846
847 lbs_deb_leave(LBS_DEB_CFG80211);
848 return ret;
849 }
850
851
852 /*
853 * Enable/Disable RSN status
854 */
855 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
856 {
857 struct cmd_ds_802_11_enable_rsn cmd;
858 int ret;
859
860 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
861
862 /*
863 * cmd 2f 00
864 * size 0c 00
865 * sequence xx xx
866 * result 00 00
867 * action 01 00 ACT_SET
868 * enable 01 00
869 */
870 memset(&cmd, 0, sizeof(cmd));
871 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
872 cmd.action = cpu_to_le16(CMD_ACT_SET);
873 cmd.enable = cpu_to_le16(enable);
874
875 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
876
877 lbs_deb_leave(LBS_DEB_CFG80211);
878 return ret;
879 }
880
881
882 /*
883 * Set WPA/WPA key material
884 */
885
886 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
887 * get rid of WEXT, this should go into host.h */
888
889 struct cmd_key_material {
890 struct cmd_header hdr;
891
892 __le16 action;
893 struct MrvlIEtype_keyParamSet param;
894 } __attribute__ ((packed));
895
896 static int lbs_set_key_material(struct lbs_private *priv,
897 int key_type,
898 int key_info,
899 u8 *key, u16 key_len)
900 {
901 struct cmd_key_material cmd;
902 int ret;
903
904 lbs_deb_enter(LBS_DEB_CFG80211);
905
906 /*
907 * Example for WPA (TKIP):
908 *
909 * cmd 5e 00
910 * size 34 00
911 * sequence xx xx
912 * result 00 00
913 * action 01 00
914 * TLV type 00 01 key param
915 * length 00 26
916 * key type 01 00 TKIP
917 * key info 06 00 UNICAST | ENABLED
918 * key len 20 00
919 * key 32 bytes
920 */
921 memset(&cmd, 0, sizeof(cmd));
922 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
923 cmd.action = cpu_to_le16(CMD_ACT_SET);
924 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
925 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
926 cmd.param.keytypeid = cpu_to_le16(key_type);
927 cmd.param.keyinfo = cpu_to_le16(key_info);
928 cmd.param.keylen = cpu_to_le16(key_len);
929 if (key && key_len)
930 memcpy(cmd.param.key, key, key_len);
931
932 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
933
934 lbs_deb_leave(LBS_DEB_CFG80211);
935 return ret;
936 }
937
938
939 /*
940 * Sets the auth type (open, shared, etc) in the firmware. That
941 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
942 * command doesn't send an authentication frame at all, it just
943 * stores the auth_type.
944 */
945 static int lbs_set_authtype(struct lbs_private *priv,
946 struct cfg80211_connect_params *sme)
947 {
948 struct cmd_ds_802_11_authenticate cmd;
949 int ret;
950
951 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
952
953 /*
954 * cmd 11 00
955 * size 19 00
956 * sequence xx xx
957 * result 00 00
958 * BSS id 00 13 19 80 da 30
959 * auth type 00
960 * reserved 00 00 00 00 00 00 00 00 00 00
961 */
962 memset(&cmd, 0, sizeof(cmd));
963 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
964 if (sme->bssid)
965 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
966 /* convert auth_type */
967 ret = lbs_auth_to_authtype(sme->auth_type);
968 if (ret < 0)
969 goto done;
970
971 cmd.authtype = ret;
972 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
973
974 done:
975 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
976 return ret;
977 }
978
979
980 /*
981 * Create association request
982 */
983 #define LBS_ASSOC_MAX_CMD_SIZE \
984 (sizeof(struct cmd_ds_802_11_associate) \
985 - 512 /* cmd_ds_802_11_associate.iebuf */ \
986 + LBS_MAX_SSID_TLV_SIZE \
987 + LBS_MAX_CHANNEL_TLV_SIZE \
988 + LBS_MAX_CF_PARAM_TLV_SIZE \
989 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
990 + LBS_MAX_WPA_TLV_SIZE)
991
992 static int lbs_associate(struct lbs_private *priv,
993 struct cfg80211_bss *bss,
994 struct cfg80211_connect_params *sme)
995 {
996 struct cmd_ds_802_11_associate_response *resp;
997 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
998 GFP_KERNEL);
999 const u8 *ssid_eid;
1000 size_t len, resp_ie_len;
1001 int status;
1002 int ret;
1003 u8 *pos = &(cmd->iebuf[0]);
1004
1005 lbs_deb_enter(LBS_DEB_CFG80211);
1006
1007 if (!cmd) {
1008 ret = -ENOMEM;
1009 goto done;
1010 }
1011
1012 /*
1013 * cmd 50 00
1014 * length 34 00
1015 * sequence xx xx
1016 * result 00 00
1017 * BSS id 00 13 19 80 da 30
1018 * capabilities 11 00
1019 * listen interval 0a 00
1020 * beacon interval 00 00
1021 * DTIM period 00
1022 * TLVs xx (up to 512 bytes)
1023 */
1024 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1025
1026 /* Fill in static fields */
1027 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1028 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1029 cmd->capability = cpu_to_le16(bss->capability);
1030
1031 /* add SSID TLV */
1032 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1033 if (ssid_eid)
1034 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1035 else
1036 lbs_deb_assoc("no SSID\n");
1037
1038 /* add DS param TLV */
1039 if (bss->channel)
1040 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1041 else
1042 lbs_deb_assoc("no channel\n");
1043
1044 /* add (empty) CF param TLV */
1045 pos += lbs_add_cf_param_tlv(pos);
1046
1047 /* add rates TLV */
1048 pos += lbs_add_common_rates_tlv(pos, bss);
1049
1050 /* add auth type TLV */
1051 if (priv->fwrelease >= 0x09000000)
1052 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1053
1054 /* add WPA/WPA2 TLV */
1055 if (sme->ie && sme->ie_len)
1056 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1057
1058 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1059 (u16)(pos - (u8 *) &cmd->iebuf);
1060 cmd->hdr.size = cpu_to_le16(len);
1061
1062 /* store for later use */
1063 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1064
1065 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1066 if (ret)
1067 goto done;
1068
1069
1070 /* generate connect message to cfg80211 */
1071
1072 resp = (void *) cmd; /* recast for easier field access */
1073 status = le16_to_cpu(resp->statuscode);
1074
1075 /* Convert statis code of old firmware */
1076 if (priv->fwrelease < 0x09000000)
1077 switch (status) {
1078 case 0:
1079 break;
1080 case 1:
1081 lbs_deb_assoc("invalid association parameters\n");
1082 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1083 break;
1084 case 2:
1085 lbs_deb_assoc("timer expired while waiting for AP\n");
1086 status = WLAN_STATUS_AUTH_TIMEOUT;
1087 break;
1088 case 3:
1089 lbs_deb_assoc("association refused by AP\n");
1090 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1091 break;
1092 case 4:
1093 lbs_deb_assoc("authentication refused by AP\n");
1094 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1095 break;
1096 default:
1097 lbs_deb_assoc("association failure %d\n", status);
1098 status = WLAN_STATUS_UNSPECIFIED_FAILURE;
1099 }
1100
1101 lbs_deb_assoc("status %d, capability 0x%04x\n", status,
1102 le16_to_cpu(resp->capability));
1103
1104 resp_ie_len = le16_to_cpu(resp->hdr.size)
1105 - sizeof(resp->hdr)
1106 - 6;
1107 cfg80211_connect_result(priv->dev,
1108 priv->assoc_bss,
1109 sme->ie, sme->ie_len,
1110 resp->iebuf, resp_ie_len,
1111 status,
1112 GFP_KERNEL);
1113
1114 if (status == 0) {
1115 /* TODO: get rid of priv->connect_status */
1116 priv->connect_status = LBS_CONNECTED;
1117 netif_carrier_on(priv->dev);
1118 if (!priv->tx_pending_len)
1119 netif_tx_wake_all_queues(priv->dev);
1120 }
1121
1122
1123 done:
1124 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1125 return ret;
1126 }
1127
1128
1129
1130 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1131 struct cfg80211_connect_params *sme)
1132 {
1133 struct lbs_private *priv = wiphy_priv(wiphy);
1134 struct cfg80211_bss *bss = NULL;
1135 int ret = 0;
1136 u8 preamble = RADIO_PREAMBLE_SHORT;
1137
1138 lbs_deb_enter(LBS_DEB_CFG80211);
1139
1140 if (sme->bssid) {
1141 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1142 sme->ssid, sme->ssid_len,
1143 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1144 } else {
1145 /*
1146 * Here we have an impedance mismatch. The firmware command
1147 * CMD_802_11_ASSOCIATE always needs a BSSID, it cannot
1148 * connect otherwise. However, for the connect-API of
1149 * cfg80211 the bssid is purely optional. We don't get one,
1150 * except the user specifies one on the "iw" command line.
1151 *
1152 * If we don't got one, we could initiate a scan and look
1153 * for the best matching cfg80211_bss entry.
1154 *
1155 * Or, better yet, net/wireless/sme.c get's rewritten into
1156 * something more generally useful.
1157 */
1158 lbs_pr_err("TODO: no BSS specified\n");
1159 ret = -ENOTSUPP;
1160 goto done;
1161 }
1162
1163
1164 if (!bss) {
1165 lbs_pr_err("assicate: bss %pM not in scan results\n",
1166 sme->bssid);
1167 ret = -ENOENT;
1168 goto done;
1169 }
1170 lbs_deb_assoc("trying %pM", sme->bssid);
1171 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1172 sme->crypto.cipher_group,
1173 sme->key_idx, sme->key_len);
1174
1175 /* As this is a new connection, clear locally stored WEP keys */
1176 priv->wep_tx_key = 0;
1177 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1178 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1179
1180 /* set/remove WEP keys */
1181 switch (sme->crypto.cipher_group) {
1182 case WLAN_CIPHER_SUITE_WEP40:
1183 case WLAN_CIPHER_SUITE_WEP104:
1184 /* Store provided WEP keys in priv-> */
1185 priv->wep_tx_key = sme->key_idx;
1186 priv->wep_key_len[sme->key_idx] = sme->key_len;
1187 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1188 /* Set WEP keys and WEP mode */
1189 lbs_set_wep_keys(priv);
1190 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1191 lbs_set_mac_control(priv);
1192 /* No RSN mode for WEP */
1193 lbs_enable_rsn(priv, 0);
1194 break;
1195 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1196 /*
1197 * If we don't have no WEP, no WPA and no WPA2,
1198 * we remove all keys like in the WPA/WPA2 setup,
1199 * we just don't set RSN.
1200 *
1201 * Therefore: fall-throught
1202 */
1203 case WLAN_CIPHER_SUITE_TKIP:
1204 case WLAN_CIPHER_SUITE_CCMP:
1205 /* Remove WEP keys and WEP mode */
1206 lbs_remove_wep_keys(priv);
1207 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1208 lbs_set_mac_control(priv);
1209
1210 /* clear the WPA/WPA2 keys */
1211 lbs_set_key_material(priv,
1212 KEY_TYPE_ID_WEP, /* doesn't matter */
1213 KEY_INFO_WPA_UNICAST,
1214 NULL, 0);
1215 lbs_set_key_material(priv,
1216 KEY_TYPE_ID_WEP, /* doesn't matter */
1217 KEY_INFO_WPA_MCAST,
1218 NULL, 0);
1219 /* RSN mode for WPA/WPA2 */
1220 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1221 break;
1222 default:
1223 lbs_pr_err("unsupported cipher group 0x%x\n",
1224 sme->crypto.cipher_group);
1225 ret = -ENOTSUPP;
1226 goto done;
1227 }
1228
1229 lbs_set_authtype(priv, sme);
1230 lbs_set_radio(priv, preamble, 1);
1231
1232 /* Do the actual association */
1233 lbs_associate(priv, bss, sme);
1234
1235 done:
1236 if (bss)
1237 cfg80211_put_bss(bss);
1238 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1239 return ret;
1240 }
1241
1242 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1243 u16 reason_code)
1244 {
1245 struct lbs_private *priv = wiphy_priv(wiphy);
1246 struct cmd_ds_802_11_deauthenticate cmd;
1247
1248 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1249
1250 /* store for lbs_cfg_ret_disconnect() */
1251 priv->disassoc_reason = reason_code;
1252
1253 memset(&cmd, 0, sizeof(cmd));
1254 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1255 /* Mildly ugly to use a locally store my own BSSID ... */
1256 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1257 cmd.reasoncode = cpu_to_le16(reason_code);
1258
1259 if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1260 return -EFAULT;
1261
1262 cfg80211_disconnected(priv->dev,
1263 priv->disassoc_reason,
1264 NULL, 0,
1265 GFP_KERNEL);
1266 priv->connect_status = LBS_DISCONNECTED;
1267
1268 return 0;
1269 }
1270
1271
1272 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1273 struct net_device *netdev,
1274 u8 key_index)
1275 {
1276 struct lbs_private *priv = wiphy_priv(wiphy);
1277
1278 lbs_deb_enter(LBS_DEB_CFG80211);
1279
1280 if (key_index != priv->wep_tx_key) {
1281 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1282 priv->wep_tx_key = key_index;
1283 lbs_set_wep_keys(priv);
1284 }
1285
1286 return 0;
1287 }
1288
1289
1290 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1291 u8 idx, const u8 *mac_addr,
1292 struct key_params *params)
1293 {
1294 struct lbs_private *priv = wiphy_priv(wiphy);
1295 u16 key_info;
1296 u16 key_type;
1297 int ret = 0;
1298
1299 lbs_deb_enter(LBS_DEB_CFG80211);
1300
1301 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1302 params->cipher, mac_addr);
1303 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1304 idx, params->key_len);
1305 if (params->key_len)
1306 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1307 params->key, params->key_len);
1308
1309 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1310 if (params->seq_len)
1311 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1312 params->seq, params->seq_len);
1313
1314 switch (params->cipher) {
1315 case WLAN_CIPHER_SUITE_WEP40:
1316 case WLAN_CIPHER_SUITE_WEP104:
1317 /* actually compare if something has changed ... */
1318 if ((priv->wep_key_len[idx] != params->key_len) ||
1319 memcmp(priv->wep_key[idx],
1320 params->key, params->key_len) != 0) {
1321 priv->wep_key_len[idx] = params->key_len;
1322 memcpy(priv->wep_key[idx],
1323 params->key, params->key_len);
1324 lbs_set_wep_keys(priv);
1325 }
1326 break;
1327 case WLAN_CIPHER_SUITE_TKIP:
1328 case WLAN_CIPHER_SUITE_CCMP:
1329 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1330 ? KEY_INFO_WPA_UNICAST
1331 : KEY_INFO_WPA_MCAST);
1332 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1333 ? KEY_TYPE_ID_TKIP
1334 : KEY_TYPE_ID_AES;
1335 lbs_set_key_material(priv,
1336 key_type,
1337 key_info,
1338 params->key, params->key_len);
1339 break;
1340 default:
1341 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1342 ret = -ENOTSUPP;
1343 break;
1344 }
1345
1346 return ret;
1347 }
1348
1349
1350 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1351 u8 key_index, const u8 *mac_addr)
1352 {
1353
1354 lbs_deb_enter(LBS_DEB_CFG80211);
1355
1356 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1357 key_index, mac_addr);
1358
1359 #ifdef TODO
1360 struct lbs_private *priv = wiphy_priv(wiphy);
1361 /*
1362 * I think can keep this a NO-OP, because:
1363
1364 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1365 * - neither "iw" nor "wpa_supplicant" won't call this during
1366 * an ongoing connection
1367 * - TODO: but I have to check if this is still true when
1368 * I set the AP to periodic re-keying
1369 * - we've not kzallec() something when we've added a key at
1370 * lbs_cfg_connect() or lbs_cfg_add_key().
1371 *
1372 * This causes lbs_cfg_del_key() only called at disconnect time,
1373 * where we'd just waste time deleting a key that is not going
1374 * to be used anyway.
1375 */
1376 if (key_index < 3 && priv->wep_key_len[key_index]) {
1377 priv->wep_key_len[key_index] = 0;
1378 lbs_set_wep_keys(priv);
1379 }
1380 #endif
1381
1382 return 0;
1383 }
1384
1385
1386
1387 /***************************************************************************
1388 * Monitor mode
1389 */
1390
1391 /* like "struct cmd_ds_802_11_monitor_mode", but with cmd_header. Once we
1392 * get rid of WEXT, this should go into host.h */
1393 struct cmd_monitor_mode {
1394 struct cmd_header hdr;
1395
1396 __le16 action;
1397 __le16 mode;
1398 } __attribute__ ((packed));
1399
1400 static int lbs_enable_monitor_mode(struct lbs_private *priv, int mode)
1401 {
1402 struct cmd_monitor_mode cmd;
1403 int ret;
1404
1405 lbs_deb_enter(LBS_DEB_CFG80211);
1406
1407 /*
1408 * cmd 98 00
1409 * size 0c 00
1410 * sequence xx xx
1411 * result 00 00
1412 * action 01 00 ACT_SET
1413 * enable 01 00
1414 */
1415 memset(&cmd, 0, sizeof(cmd));
1416 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1417 cmd.action = cpu_to_le16(CMD_ACT_SET);
1418 cmd.mode = cpu_to_le16(mode);
1419
1420 ret = lbs_cmd_with_response(priv, CMD_802_11_MONITOR_MODE, &cmd);
1421
1422 if (ret == 0)
1423 priv->dev->type = ARPHRD_IEEE80211_RADIOTAP;
1424 else
1425 priv->dev->type = ARPHRD_ETHER;
1426
1427 lbs_deb_leave(LBS_DEB_CFG80211);
1428 return ret;
1429 }
1430
1431
1432
1433
1434
1435
1436 /***************************************************************************
1437 * Get station
1438 */
1439
1440 /*
1441 * Returns the signal or 0 in case of an error.
1442 */
1443
1444 /* like "struct cmd_ds_802_11_rssi", but with cmd_header. Once we get rid
1445 * of WEXT, this should go into host.h */
1446 struct cmd_rssi {
1447 struct cmd_header hdr;
1448
1449 __le16 n_or_snr;
1450 __le16 nf;
1451 __le16 avg_snr;
1452 __le16 avg_nf;
1453 } __attribute__ ((packed));
1454
1455 static int lbs_get_signal(struct lbs_private *priv, s8 *signal, s8 *noise)
1456 {
1457 struct cmd_rssi cmd;
1458 int ret;
1459
1460 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1461 cmd.n_or_snr = cpu_to_le16(DEFAULT_BCN_AVG_FACTOR);
1462 ret = lbs_cmd_with_response(priv, CMD_802_11_RSSI, &cmd);
1463
1464 if (ret == 0) {
1465 *signal = CAL_RSSI(le16_to_cpu(cmd.n_or_snr),
1466 le16_to_cpu(cmd.nf));
1467 *noise = CAL_NF(le16_to_cpu(cmd.nf));
1468 }
1469 return ret;
1470 }
1471
1472
1473 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1474 u8 *mac, struct station_info *sinfo)
1475 {
1476 struct lbs_private *priv = wiphy_priv(wiphy);
1477 s8 signal, noise;
1478 int ret;
1479 size_t i;
1480
1481 lbs_deb_enter(LBS_DEB_CFG80211);
1482
1483 sinfo->filled |= STATION_INFO_TX_BYTES |
1484 STATION_INFO_TX_PACKETS |
1485 STATION_INFO_RX_BYTES |
1486 STATION_INFO_RX_PACKETS;
1487 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1488 sinfo->tx_packets = priv->dev->stats.tx_packets;
1489 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1490 sinfo->rx_packets = priv->dev->stats.rx_packets;
1491
1492 /* Get current RSSI */
1493 ret = lbs_get_signal(priv, &signal, &noise);
1494 if (ret == 0) {
1495 sinfo->signal = signal;
1496 sinfo->filled |= STATION_INFO_SIGNAL;
1497 }
1498
1499 /* Convert priv->cur_rate from hw_value to NL80211 value */
1500 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1501 if (priv->cur_rate == lbs_rates[i].hw_value) {
1502 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1503 sinfo->filled |= STATION_INFO_TX_BITRATE;
1504 break;
1505 }
1506 }
1507
1508 return 0;
1509 }
1510
1511
1512
1513
1514 /***************************************************************************
1515 * "Site survey", here just current channel and noise level
1516 */
1517
1518 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1519 int idx, struct survey_info *survey)
1520 {
1521 struct lbs_private *priv = wiphy_priv(wiphy);
1522 s8 signal, noise;
1523 int ret;
1524
1525 if (idx != 0)
1526 ret = -ENOENT;
1527
1528 lbs_deb_enter(LBS_DEB_CFG80211);
1529
1530 survey->channel = ieee80211_get_channel(wiphy,
1531 ieee80211_channel_to_frequency(priv->channel));
1532
1533 ret = lbs_get_signal(priv, &signal, &noise);
1534 if (ret == 0) {
1535 survey->filled = SURVEY_INFO_NOISE_DBM;
1536 survey->noise = noise;
1537 }
1538
1539 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1540 return ret;
1541 }
1542
1543
1544
1545
1546 /***************************************************************************
1547 * Change interface
1548 */
1549
1550 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1551 enum nl80211_iftype type, u32 *flags,
1552 struct vif_params *params)
1553 {
1554 struct lbs_private *priv = wiphy_priv(wiphy);
1555 int ret = 0;
1556
1557 lbs_deb_enter(LBS_DEB_CFG80211);
1558
1559 switch (type) {
1560 case NL80211_IFTYPE_MONITOR:
1561 ret = lbs_enable_monitor_mode(priv, 1);
1562 break;
1563 case NL80211_IFTYPE_STATION:
1564 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1565 ret = lbs_enable_monitor_mode(priv, 0);
1566 if (!ret)
1567 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1568 break;
1569 case NL80211_IFTYPE_ADHOC:
1570 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1571 ret = lbs_enable_monitor_mode(priv, 0);
1572 if (!ret)
1573 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1574 break;
1575 default:
1576 ret = -ENOTSUPP;
1577 }
1578
1579 if (!ret)
1580 priv->wdev->iftype = type;
1581
1582 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1583 return ret;
1584 }
1585
1586
1587
1588 /***************************************************************************
1589 * IBSS (Ad-Hoc)
1590 */
1591
1592 /* The firmware needs the following bits masked out of the beacon-derived
1593 * capability field when associating/joining to a BSS:
1594 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1595 */
1596 #define CAPINFO_MASK (~(0xda00))
1597
1598
1599 static void lbs_join_post(struct lbs_private *priv,
1600 struct cfg80211_ibss_params *params,
1601 u8 *bssid, u16 capability)
1602 {
1603 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1604 2 + 4 + /* basic rates */
1605 2 + 1 + /* DS parameter */
1606 2 + 2 + /* atim */
1607 2 + 8]; /* extended rates */
1608 u8 *fake = fake_ie;
1609
1610 lbs_deb_enter(LBS_DEB_CFG80211);
1611
1612 /*
1613 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1614 * the real IE from the firmware. So we fabricate a fake IE based on
1615 * what the firmware actually sends (sniffed with wireshark).
1616 */
1617 /* Fake SSID IE */
1618 *fake++ = WLAN_EID_SSID;
1619 *fake++ = params->ssid_len;
1620 memcpy(fake, params->ssid, params->ssid_len);
1621 fake += params->ssid_len;
1622 /* Fake supported basic rates IE */
1623 *fake++ = WLAN_EID_SUPP_RATES;
1624 *fake++ = 4;
1625 *fake++ = 0x82;
1626 *fake++ = 0x84;
1627 *fake++ = 0x8b;
1628 *fake++ = 0x96;
1629 /* Fake DS channel IE */
1630 *fake++ = WLAN_EID_DS_PARAMS;
1631 *fake++ = 1;
1632 *fake++ = params->channel->hw_value;
1633 /* Fake IBSS params IE */
1634 *fake++ = WLAN_EID_IBSS_PARAMS;
1635 *fake++ = 2;
1636 *fake++ = 0; /* ATIM=0 */
1637 *fake++ = 0;
1638 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1639 * but I don't know how this could be checked */
1640 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1641 *fake++ = 8;
1642 *fake++ = 0x0c;
1643 *fake++ = 0x12;
1644 *fake++ = 0x18;
1645 *fake++ = 0x24;
1646 *fake++ = 0x30;
1647 *fake++ = 0x48;
1648 *fake++ = 0x60;
1649 *fake++ = 0x6c;
1650 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1651
1652 cfg80211_inform_bss(priv->wdev->wiphy,
1653 params->channel,
1654 bssid,
1655 0,
1656 capability,
1657 params->beacon_interval,
1658 fake_ie, fake - fake_ie,
1659 0, GFP_KERNEL);
1660
1661 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1662 priv->wdev->ssid_len = params->ssid_len;
1663
1664 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1665
1666 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1667 priv->connect_status = LBS_CONNECTED;
1668 netif_carrier_on(priv->dev);
1669 if (!priv->tx_pending_len)
1670 netif_wake_queue(priv->dev);
1671
1672 lbs_deb_leave(LBS_DEB_CFG80211);
1673 }
1674
1675 static int lbs_ibss_join_existing(struct lbs_private *priv,
1676 struct cfg80211_ibss_params *params,
1677 struct cfg80211_bss *bss)
1678 {
1679 const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1680 struct cmd_ds_802_11_ad_hoc_join cmd;
1681 u8 preamble = RADIO_PREAMBLE_SHORT;
1682 int ret = 0;
1683
1684 lbs_deb_enter(LBS_DEB_CFG80211);
1685
1686 /* TODO: set preamble based on scan result */
1687 ret = lbs_set_radio(priv, preamble, 1);
1688 if (ret)
1689 goto out;
1690
1691 /*
1692 * Example CMD_802_11_AD_HOC_JOIN command:
1693 *
1694 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1695 * size 65 00
1696 * sequence xx xx
1697 * result 00 00
1698 * bssid 02 27 27 97 2f 96
1699 * ssid 49 42 53 53 00 00 00 00
1700 * 00 00 00 00 00 00 00 00
1701 * 00 00 00 00 00 00 00 00
1702 * 00 00 00 00 00 00 00 00
1703 * type 02 CMD_BSS_TYPE_IBSS
1704 * beacon period 64 00
1705 * dtim period 00
1706 * timestamp 00 00 00 00 00 00 00 00
1707 * localtime 00 00 00 00 00 00 00 00
1708 * IE DS 03
1709 * IE DS len 01
1710 * IE DS channel 01
1711 * reserveed 00 00 00 00
1712 * IE IBSS 06
1713 * IE IBSS len 02
1714 * IE IBSS atim 00 00
1715 * reserved 00 00 00 00
1716 * capability 02 00
1717 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1718 * fail timeout ff 00
1719 * probe delay 00 00
1720 */
1721 memset(&cmd, 0, sizeof(cmd));
1722 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1723
1724 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1725 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1726 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1727 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1728 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1729 cmd.bss.ds.header.len = 1;
1730 cmd.bss.ds.channel = params->channel->hw_value;
1731 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1732 cmd.bss.ibss.header.len = 2;
1733 cmd.bss.ibss.atimwindow = 0;
1734 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1735
1736 /* set rates to the intersection of our rates and the rates in the
1737 bss */
1738 if (!rates_eid) {
1739 lbs_add_rates(cmd.bss.rates);
1740 } else {
1741 int hw, i;
1742 u8 rates_max = rates_eid[1];
1743 u8 *rates = cmd.bss.rates;
1744 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1745 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1746 for (i = 0; i < rates_max; i++) {
1747 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1748 u8 rate = rates_eid[i+2];
1749 if (rate == 0x02 || rate == 0x04 ||
1750 rate == 0x0b || rate == 0x16)
1751 rate |= 0x80;
1752 *rates++ = rate;
1753 }
1754 }
1755 }
1756 }
1757
1758 /* Only v8 and below support setting this */
1759 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1760 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1761 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1762 }
1763 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1764 if (ret)
1765 goto out;
1766
1767 /*
1768 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1769 *
1770 * response 2c 80
1771 * size 09 00
1772 * sequence xx xx
1773 * result 00 00
1774 * reserved 00
1775 */
1776 lbs_join_post(priv, params, bss->bssid, bss->capability);
1777
1778 out:
1779 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1780 return ret;
1781 }
1782
1783
1784
1785 static int lbs_ibss_start_new(struct lbs_private *priv,
1786 struct cfg80211_ibss_params *params)
1787 {
1788 struct cmd_ds_802_11_ad_hoc_start cmd;
1789 struct cmd_ds_802_11_ad_hoc_result *resp =
1790 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1791 u8 preamble = RADIO_PREAMBLE_SHORT;
1792 int ret = 0;
1793 u16 capability;
1794
1795 lbs_deb_enter(LBS_DEB_CFG80211);
1796
1797 ret = lbs_set_radio(priv, preamble, 1);
1798 if (ret)
1799 goto out;
1800
1801 /*
1802 * Example CMD_802_11_AD_HOC_START command:
1803 *
1804 * command 2b 00 CMD_802_11_AD_HOC_START
1805 * size b1 00
1806 * sequence xx xx
1807 * result 00 00
1808 * ssid 54 45 53 54 00 00 00 00
1809 * 00 00 00 00 00 00 00 00
1810 * 00 00 00 00 00 00 00 00
1811 * 00 00 00 00 00 00 00 00
1812 * bss type 02
1813 * beacon period 64 00
1814 * dtim period 00
1815 * IE IBSS 06
1816 * IE IBSS len 02
1817 * IE IBSS atim 00 00
1818 * reserved 00 00 00 00
1819 * IE DS 03
1820 * IE DS len 01
1821 * IE DS channel 01
1822 * reserved 00 00 00 00
1823 * probe delay 00 00
1824 * capability 02 00
1825 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1826 * 0c 12 18 24 30 48 60 6c
1827 * padding 100 bytes
1828 */
1829 memset(&cmd, 0, sizeof(cmd));
1830 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1831 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1832 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1833 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1834 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1835 cmd.ibss.header.len = 2;
1836 cmd.ibss.atimwindow = 0;
1837 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1838 cmd.ds.header.len = 1;
1839 cmd.ds.channel = params->channel->hw_value;
1840 /* Only v8 and below support setting probe delay */
1841 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1842 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1843 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1844 capability = WLAN_CAPABILITY_IBSS;
1845 cmd.capability = cpu_to_le16(capability);
1846 lbs_add_rates(cmd.rates);
1847
1848
1849 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1850 if (ret)
1851 goto out;
1852
1853 /*
1854 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1855 *
1856 * response 2b 80
1857 * size 14 00
1858 * sequence xx xx
1859 * result 00 00
1860 * reserved 00
1861 * bssid 02 2b 7b 0f 86 0e
1862 */
1863 lbs_join_post(priv, params, resp->bssid, capability);
1864
1865 out:
1866 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1867 return ret;
1868 }
1869
1870
1871 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1872 struct cfg80211_ibss_params *params)
1873 {
1874 struct lbs_private *priv = wiphy_priv(wiphy);
1875 int ret = 0;
1876 struct cfg80211_bss *bss;
1877 DECLARE_SSID_BUF(ssid_buf);
1878
1879 lbs_deb_enter(LBS_DEB_CFG80211);
1880
1881 if (!params->channel) {
1882 ret = -ENOTSUPP;
1883 goto out;
1884 }
1885
1886 ret = lbs_set_channel(priv, params->channel->hw_value);
1887 if (ret)
1888 goto out;
1889
1890 /* Search if someone is beaconing. This assumes that the
1891 * bss list is populated already */
1892 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1893 params->ssid, params->ssid_len,
1894 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1895
1896 if (bss) {
1897 ret = lbs_ibss_join_existing(priv, params, bss);
1898 cfg80211_put_bss(bss);
1899 } else
1900 ret = lbs_ibss_start_new(priv, params);
1901
1902
1903 out:
1904 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1905 return ret;
1906 }
1907
1908
1909 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1910 {
1911 struct lbs_private *priv = wiphy_priv(wiphy);
1912 struct cmd_ds_802_11_ad_hoc_stop cmd;
1913 int ret = 0;
1914
1915 lbs_deb_enter(LBS_DEB_CFG80211);
1916
1917 memset(&cmd, 0, sizeof(cmd));
1918 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1919 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1920
1921 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1922 lbs_mac_event_disconnected(priv);
1923
1924 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1925 return ret;
1926 }
1927
1928
1929
1930
1931 /***************************************************************************
1932 * Initialization
1933 */
1934
1935 static struct cfg80211_ops lbs_cfg80211_ops = {
1936 .set_channel = lbs_cfg_set_channel,
1937 .scan = lbs_cfg_scan,
1938 .connect = lbs_cfg_connect,
1939 .disconnect = lbs_cfg_disconnect,
1940 .add_key = lbs_cfg_add_key,
1941 .del_key = lbs_cfg_del_key,
1942 .set_default_key = lbs_cfg_set_default_key,
1943 .get_station = lbs_cfg_get_station,
1944 .dump_survey = lbs_get_survey,
1945 .change_virtual_intf = lbs_change_intf,
1946 .join_ibss = lbs_join_ibss,
1947 .leave_ibss = lbs_leave_ibss,
1948 };
1949
1950
1951 /*
1952 * At this time lbs_private *priv doesn't even exist, so we just allocate
1953 * memory and don't initialize the wiphy further. This is postponed until we
1954 * can talk to the firmware and happens at registration time in
1955 * lbs_cfg_wiphy_register().
1956 */
1957 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
1958 {
1959 int ret = 0;
1960 struct wireless_dev *wdev;
1961
1962 lbs_deb_enter(LBS_DEB_CFG80211);
1963
1964 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1965 if (!wdev) {
1966 dev_err(dev, "cannot allocate wireless device\n");
1967 return ERR_PTR(-ENOMEM);
1968 }
1969
1970 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
1971 if (!wdev->wiphy) {
1972 dev_err(dev, "cannot allocate wiphy\n");
1973 ret = -ENOMEM;
1974 goto err_wiphy_new;
1975 }
1976
1977 lbs_deb_leave(LBS_DEB_CFG80211);
1978 return wdev;
1979
1980 err_wiphy_new:
1981 kfree(wdev);
1982 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1983 return ERR_PTR(ret);
1984 }
1985
1986
1987 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
1988 {
1989 struct region_code_mapping {
1990 const char *cn;
1991 int code;
1992 };
1993
1994 /* Section 5.17.2 */
1995 static struct region_code_mapping regmap[] = {
1996 {"US ", 0x10}, /* US FCC */
1997 {"CA ", 0x20}, /* Canada */
1998 {"EU ", 0x30}, /* ETSI */
1999 {"ES ", 0x31}, /* Spain */
2000 {"FR ", 0x32}, /* France */
2001 {"JP ", 0x40}, /* Japan */
2002 };
2003 size_t i;
2004
2005 lbs_deb_enter(LBS_DEB_CFG80211);
2006
2007 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2008 if (regmap[i].code == priv->regioncode) {
2009 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2010 break;
2011 }
2012
2013 lbs_deb_leave(LBS_DEB_CFG80211);
2014 }
2015
2016
2017 /*
2018 * This function get's called after lbs_setup_firmware() determined the
2019 * firmware capabities. So we can setup the wiphy according to our
2020 * hardware/firmware.
2021 */
2022 int lbs_cfg_register(struct lbs_private *priv)
2023 {
2024 struct wireless_dev *wdev = priv->wdev;
2025 int ret;
2026
2027 lbs_deb_enter(LBS_DEB_CFG80211);
2028
2029 wdev->wiphy->max_scan_ssids = 1;
2030 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2031
2032 wdev->wiphy->interface_modes =
2033 BIT(NL80211_IFTYPE_STATION) |
2034 BIT(NL80211_IFTYPE_ADHOC);
2035 if (lbs_rtap_supported(priv))
2036 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2037
2038 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2039
2040 /*
2041 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2042 * never seen a firmware without WPA
2043 */
2044 wdev->wiphy->cipher_suites = cipher_suites;
2045 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2046 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2047
2048 ret = wiphy_register(wdev->wiphy);
2049 if (ret < 0)
2050 lbs_pr_err("cannot register wiphy device\n");
2051
2052 priv->wiphy_registered = true;
2053
2054 ret = register_netdev(priv->dev);
2055 if (ret)
2056 lbs_pr_err("cannot register network device\n");
2057
2058 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2059
2060 lbs_cfg_set_regulatory_hint(priv);
2061
2062 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2063 return ret;
2064 }
2065
2066 /**
2067 * @brief This function sets DOMAIN INFO to FW
2068 * @param priv pointer to struct lbs_private
2069 * @return 0; -1
2070 */
2071 static int lbs_11d_set_domain_info(struct lbs_private *priv)
2072 {
2073 int ret;
2074
2075 ret = lbs_prepare_and_send_command(priv, CMD_802_11D_DOMAIN_INFO,
2076 CMD_ACT_SET,
2077 CMD_OPTION_WAITFORRSP, 0, NULL);
2078 if (ret)
2079 lbs_deb_11d("fail to dnld domain info\n");
2080
2081 return ret;
2082 }
2083
2084 static void lbs_send_domain_info_cmd_fw(struct wiphy *wiphy,
2085 struct regulatory_request *request)
2086 {
2087 u8 no_of_triplet = 0;
2088 u8 no_of_parsed_chan = 0;
2089 u8 first_channel = 0, next_chan = 0, max_pwr = 0;
2090 u8 i, flag = 0;
2091 enum ieee80211_band band;
2092 struct ieee80211_supported_band *sband;
2093 struct ieee80211_channel *ch;
2094 struct lbs_private *priv = wiphy_priv(wiphy);
2095 struct lbs_802_11d_domain_reg *domain_info = &priv->domain_reg;
2096 int ret = 0;
2097
2098 lbs_deb_enter(LBS_DEB_CFG80211);
2099
2100 /* Set country code */
2101 domain_info->country_code[0] = request->alpha2[0];
2102 domain_info->country_code[1] = request->alpha2[1];
2103 domain_info->country_code[2] = ' ';
2104
2105 for (band = 0; band < IEEE80211_NUM_BANDS ; band++) {
2106
2107 if (!wiphy->bands[band])
2108 continue;
2109
2110 sband = wiphy->bands[band];
2111
2112 for (i = 0; i < sband->n_channels ; i++) {
2113 ch = &sband->channels[i];
2114 if (ch->flags & IEEE80211_CHAN_DISABLED)
2115 continue;
2116
2117 if (!flag) {
2118 flag = 1;
2119 next_chan = first_channel = (u32) ch->hw_value;
2120 max_pwr = ch->max_power;
2121 no_of_parsed_chan = 1;
2122 continue;
2123 }
2124
2125 if (ch->hw_value == next_chan + 1 &&
2126 ch->max_power == max_pwr) {
2127 next_chan++;
2128 no_of_parsed_chan++;
2129 } else {
2130 domain_info->triplet[no_of_triplet]
2131 .chans.first_channel = first_channel;
2132 domain_info->triplet[no_of_triplet]
2133 .chans.num_channels = no_of_parsed_chan;
2134 domain_info->triplet[no_of_triplet]
2135 .chans.max_power = max_pwr;
2136 no_of_triplet++;
2137 flag = 0;
2138 }
2139 }
2140 if (flag) {
2141 domain_info->triplet[no_of_triplet]
2142 .chans.first_channel = first_channel;
2143 domain_info->triplet[no_of_triplet]
2144 .chans.num_channels = no_of_parsed_chan;
2145 domain_info->triplet[no_of_triplet]
2146 .chans.max_power = max_pwr;
2147 no_of_triplet++;
2148 }
2149 }
2150
2151 domain_info->no_triplet = no_of_triplet;
2152
2153 /* Set domain info */
2154 ret = lbs_11d_set_domain_info(priv);
2155 if (ret)
2156 lbs_pr_err("11D: error setting domain info in FW\n");
2157
2158 lbs_deb_leave(LBS_DEB_CFG80211);
2159 }
2160
2161 int lbs_reg_notifier(struct wiphy *wiphy,
2162 struct regulatory_request *request)
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 lbs_send_domain_info_cmd_fw(wiphy, request);
2169
2170 lbs_deb_leave(LBS_DEB_CFG80211);
2171
2172 return 0;
2173 }
2174
2175 void lbs_scan_deinit(struct lbs_private *priv)
2176 {
2177 lbs_deb_enter(LBS_DEB_CFG80211);
2178 cancel_delayed_work_sync(&priv->scan_work);
2179 }
2180
2181
2182 void lbs_cfg_free(struct lbs_private *priv)
2183 {
2184 struct wireless_dev *wdev = priv->wdev;
2185
2186 lbs_deb_enter(LBS_DEB_CFG80211);
2187
2188 if (!wdev)
2189 return;
2190
2191 if (priv->wiphy_registered)
2192 wiphy_unregister(wdev->wiphy);
2193
2194 if (wdev->wiphy)
2195 wiphy_free(wdev->wiphy);
2196
2197 kfree(wdev);
2198 }
ubuntu-zesty-kernel mirror