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Linux 4.4.145
[linux/fpc-iii.git] / drivers / net / wireless / libertas / cfg.c
blob8317afd065b498fd8001a0e83ec82c9b9a5284aa
1 /*
2 * Implement cfg80211 ("iw") support.
3 *
4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
5 * Holger Schurig <hs4233@mail.mn-solutions.de>
6 *
7 */
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #include <linux/hardirq.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/slab.h>
15 #include <linux/ieee80211.h>
16 #include <net/cfg80211.h>
17 #include <asm/unaligned.h>
18
19 #include "decl.h"
20 #include "cfg.h"
21 #include "cmd.h"
22 #include "mesh.h"
23
24
25 #define CHAN2G(_channel, _freq, _flags) { \
26 .band = IEEE80211_BAND_2GHZ, \
27 .center_freq = (_freq), \
28 .hw_value = (_channel), \
29 .flags = (_flags), \
30 .max_antenna_gain = 0, \
31 .max_power = 30, \
32 }
33
34 static struct ieee80211_channel lbs_2ghz_channels[] = {
35 CHAN2G(1, 2412, 0),
36 CHAN2G(2, 2417, 0),
37 CHAN2G(3, 2422, 0),
38 CHAN2G(4, 2427, 0),
39 CHAN2G(5, 2432, 0),
40 CHAN2G(6, 2437, 0),
41 CHAN2G(7, 2442, 0),
42 CHAN2G(8, 2447, 0),
43 CHAN2G(9, 2452, 0),
44 CHAN2G(10, 2457, 0),
45 CHAN2G(11, 2462, 0),
46 CHAN2G(12, 2467, 0),
47 CHAN2G(13, 2472, 0),
48 CHAN2G(14, 2484, 0),
49 };
50
51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
52 .bitrate = (_rate), \
53 .hw_value = (_hw_value), \
54 .flags = (_flags), \
55 }
56
57
58 /* Table 6 in section 3.2.1.1 */
59 static struct ieee80211_rate lbs_rates[] = {
60 RATETAB_ENT(10, 0, 0),
61 RATETAB_ENT(20, 1, 0),
62 RATETAB_ENT(55, 2, 0),
63 RATETAB_ENT(110, 3, 0),
64 RATETAB_ENT(60, 9, 0),
65 RATETAB_ENT(90, 6, 0),
66 RATETAB_ENT(120, 7, 0),
67 RATETAB_ENT(180, 8, 0),
68 RATETAB_ENT(240, 9, 0),
69 RATETAB_ENT(360, 10, 0),
70 RATETAB_ENT(480, 11, 0),
71 RATETAB_ENT(540, 12, 0),
72 };
73
74 static struct ieee80211_supported_band lbs_band_2ghz = {
75 .channels = lbs_2ghz_channels,
76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
77 .bitrates = lbs_rates,
78 .n_bitrates = ARRAY_SIZE(lbs_rates),
79 };
80
81
82 static const u32 cipher_suites[] = {
83 WLAN_CIPHER_SUITE_WEP40,
84 WLAN_CIPHER_SUITE_WEP104,
85 WLAN_CIPHER_SUITE_TKIP,
86 WLAN_CIPHER_SUITE_CCMP,
87 };
88
89 /* Time to stay on the channel */
90 #define LBS_DWELL_PASSIVE 100
91 #define LBS_DWELL_ACTIVE 40
92
93
94 /***************************************************************************
95 * Misc utility functions
96 *
97 * TLVs are Marvell specific. They are very similar to IEs, they have the
98 * same structure: type, length, data*. The only difference: for IEs, the
99 * type and length are u8, but for TLVs they're __le16.
100 */
101
102 /*
103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
104 * in the firmware spec
105 */
106 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
107 {
108 int ret = -ENOTSUPP;
109
110 switch (auth_type) {
111 case NL80211_AUTHTYPE_OPEN_SYSTEM:
112 case NL80211_AUTHTYPE_SHARED_KEY:
113 ret = auth_type;
114 break;
115 case NL80211_AUTHTYPE_AUTOMATIC:
116 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
117 break;
118 case NL80211_AUTHTYPE_NETWORK_EAP:
119 ret = 0x80;
120 break;
121 default:
122 /* silence compiler */
123 break;
124 }
125 return ret;
126 }
127
128
129 /*
130 * Various firmware commands need the list of supported rates, but with
131 * the hight-bit set for basic rates
132 */
133 static int lbs_add_rates(u8 *rates)
134 {
135 size_t i;
136
137 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
138 u8 rate = lbs_rates[i].bitrate / 5;
139 if (rate == 0x02 || rate == 0x04 ||
140 rate == 0x0b || rate == 0x16)
141 rate |= 0x80;
142 rates[i] = rate;
143 }
144 return ARRAY_SIZE(lbs_rates);
145 }
146
147
148 /***************************************************************************
149 * TLV utility functions
150 *
151 * TLVs are Marvell specific. They are very similar to IEs, they have the
152 * same structure: type, length, data*. The only difference: for IEs, the
153 * type and length are u8, but for TLVs they're __le16.
154 */
155
156
157 /*
158 * Add ssid TLV
159 */
160 #define LBS_MAX_SSID_TLV_SIZE \
161 (sizeof(struct mrvl_ie_header) \
162 + IEEE80211_MAX_SSID_LEN)
163
164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
165 {
166 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
167
168 /*
169 * TLV-ID SSID 00 00
170 * length 06 00
171 * ssid 4d 4e 54 45 53 54
172 */
173 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
174 ssid_tlv->header.len = cpu_to_le16(ssid_len);
175 memcpy(ssid_tlv->ssid, ssid, ssid_len);
176 return sizeof(ssid_tlv->header) + ssid_len;
177 }
178
179
180 /*
181 * Add channel list TLV (section 8.4.2)
182 *
183 * Actual channel data comes from priv->wdev->wiphy->channels.
184 */
185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
186 (sizeof(struct mrvl_ie_header) \
187 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
188
189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
190 int last_channel, int active_scan)
191 {
192 int chanscanparamsize = sizeof(struct chanscanparamset) *
193 (last_channel - priv->scan_channel);
194
195 struct mrvl_ie_header *header = (void *) tlv;
196
197 /*
198 * TLV-ID CHANLIST 01 01
199 * length 0e 00
200 * channel 00 01 00 00 00 64 00
201 * radio type 00
202 * channel 01
203 * scan type 00
204 * min scan time 00 00
205 * max scan time 64 00
206 * channel 2 00 02 00 00 00 64 00
207 *
208 */
209
210 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
211 header->len = cpu_to_le16(chanscanparamsize);
212 tlv += sizeof(struct mrvl_ie_header);
213
214 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
215 last_channel); */
216 memset(tlv, 0, chanscanparamsize);
217
218 while (priv->scan_channel < last_channel) {
219 struct chanscanparamset *param = (void *) tlv;
220
221 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
222 param->channumber =
223 priv->scan_req->channels[priv->scan_channel]->hw_value;
224 if (active_scan) {
225 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
226 } else {
227 param->chanscanmode.passivescan = 1;
228 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
229 }
230 tlv += sizeof(struct chanscanparamset);
231 priv->scan_channel++;
232 }
233 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
234 }
235
236
237 /*
238 * Add rates TLV
239 *
240 * The rates are in lbs_bg_rates[], but for the 802.11b
241 * rates the high bit is set. We add this TLV only because
242 * there's a firmware which otherwise doesn't report all
243 * APs in range.
244 */
245 #define LBS_MAX_RATES_TLV_SIZE \
246 (sizeof(struct mrvl_ie_header) \
247 + (ARRAY_SIZE(lbs_rates)))
248
249 /* Adds a TLV with all rates the hardware supports */
250 static int lbs_add_supported_rates_tlv(u8 *tlv)
251 {
252 size_t i;
253 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
254
255 /*
256 * TLV-ID RATES 01 00
257 * length 0e 00
258 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
259 */
260 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
261 tlv += sizeof(rate_tlv->header);
262 i = lbs_add_rates(tlv);
263 tlv += i;
264 rate_tlv->header.len = cpu_to_le16(i);
265 return sizeof(rate_tlv->header) + i;
266 }
267
268 /* Add common rates from a TLV and return the new end of the TLV */
269 static u8 *
270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
271 {
272 int hw, ap, ap_max = ie[1];
273 u8 hw_rate;
274
275 /* Advance past IE header */
276 ie += 2;
277
278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
279
280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
281 hw_rate = lbs_rates[hw].bitrate / 5;
282 for (ap = 0; ap < ap_max; ap++) {
283 if (hw_rate == (ie[ap] & 0x7f)) {
284 *tlv++ = ie[ap];
285 *nrates = *nrates + 1;
286 }
287 }
288 }
289 return tlv;
290 }
291
292 /*
293 * Adds a TLV with all rates the hardware *and* BSS supports.
294 */
295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
296 {
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
299 int n = 0;
300
301 rcu_read_lock();
302 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
303 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
304
305 /*
306 * 01 00 TLV_TYPE_RATES
307 * 04 00 len
308 * 82 84 8b 96 rates
309 */
310 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
311 tlv += sizeof(rate_tlv->header);
312
313 /* Add basic rates */
314 if (rates_eid) {
315 tlv = add_ie_rates(tlv, rates_eid, &n);
316
317 /* Add extended rates, if any */
318 if (ext_rates_eid)
319 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
320 } else {
321 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
322 /* Fallback: add basic 802.11b rates */
323 *tlv++ = 0x82;
324 *tlv++ = 0x84;
325 *tlv++ = 0x8b;
326 *tlv++ = 0x96;
327 n = 4;
328 }
329 rcu_read_unlock();
330
331 rate_tlv->header.len = cpu_to_le16(n);
332 return sizeof(rate_tlv->header) + n;
333 }
334
335
336 /*
337 * Add auth type TLV.
338 *
339 * This is only needed for newer firmware (V9 and up).
340 */
341 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
342 sizeof(struct mrvl_ie_auth_type)
343
344 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
345 {
346 struct mrvl_ie_auth_type *auth = (void *) tlv;
347
348 /*
349 * 1f 01 TLV_TYPE_AUTH_TYPE
350 * 01 00 len
351 * 01 auth type
352 */
353 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
354 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
355 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
356 return sizeof(*auth);
357 }
358
359
360 /*
361 * Add channel (phy ds) TLV
362 */
363 #define LBS_MAX_CHANNEL_TLV_SIZE \
364 sizeof(struct mrvl_ie_header)
365
366 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
367 {
368 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
369
370 /*
371 * 03 00 TLV_TYPE_PHY_DS
372 * 01 00 len
373 * 06 channel
374 */
375 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
376 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
377 ds->channel = channel;
378 return sizeof(*ds);
379 }
380
381
382 /*
383 * Add (empty) CF param TLV of the form:
384 */
385 #define LBS_MAX_CF_PARAM_TLV_SIZE \
386 sizeof(struct mrvl_ie_header)
387
388 static int lbs_add_cf_param_tlv(u8 *tlv)
389 {
390 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
391
392 /*
393 * 04 00 TLV_TYPE_CF
394 * 06 00 len
395 * 00 cfpcnt
396 * 00 cfpperiod
397 * 00 00 cfpmaxduration
398 * 00 00 cfpdurationremaining
399 */
400 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
401 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
402 return sizeof(*cf);
403 }
404
405 /*
406 * Add WPA TLV
407 */
408 #define LBS_MAX_WPA_TLV_SIZE \
409 (sizeof(struct mrvl_ie_header) \
410 + 128 /* TODO: I guessed the size */)
411
412 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
413 {
414 size_t tlv_len;
415
416 /*
417 * We need just convert an IE to an TLV. IEs use u8 for the header,
418 * u8 type
419 * u8 len
420 * u8[] data
421 * but TLVs use __le16 instead:
422 * __le16 type
423 * __le16 len
424 * u8[] data
425 */
426 *tlv++ = *ie++;
427 *tlv++ = 0;
428 tlv_len = *tlv++ = *ie++;
429 *tlv++ = 0;
430 while (tlv_len--)
431 *tlv++ = *ie++;
432 /* the TLV is two bytes larger than the IE */
433 return ie_len + 2;
434 }
435
436 /*
437 * Set Channel
438 */
439
440 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
441 struct cfg80211_chan_def *chandef)
442 {
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
447 chandef->chan->center_freq,
448 cfg80211_get_chandef_type(chandef));
449
450 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
451 goto out;
452
453 ret = lbs_set_channel(priv, chandef->chan->hw_value);
454
455 out:
456 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
457 return ret;
458 }
459
460 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
461 struct net_device *netdev,
462 struct ieee80211_channel *channel)
463 {
464 struct lbs_private *priv = wiphy_priv(wiphy);
465 int ret = -ENOTSUPP;
466
467 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
468 netdev_name(netdev), channel->center_freq);
469
470 if (netdev != priv->mesh_dev)
471 goto out;
472
473 ret = lbs_mesh_set_channel(priv, channel->hw_value);
474
475 out:
476 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
477 return ret;
478 }
479
480
481
482 /*
483 * Scanning
484 */
485
486 /*
487 * When scanning, the firmware doesn't send a nul packet with the power-safe
488 * bit to the AP. So we cannot stay away from our current channel too long,
489 * otherwise we loose data. So take a "nap" while scanning every other
490 * while.
491 */
492 #define LBS_SCAN_BEFORE_NAP 4
493
494
495 /*
496 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
497 * which isn't really an RSSI, as it becomes larger when moving away from
498 * the AP. Anyway, we need to convert that into mBm.
499 */
500 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
501 ((-(int)rssi + 3)*100)
502
503 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
504 struct cmd_header *resp)
505 {
506 struct cfg80211_bss *bss;
507 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
508 int bsssize;
509 const u8 *pos;
510 const u8 *tsfdesc;
511 int tsfsize;
512 int i;
513 int ret = -EILSEQ;
514
515 lbs_deb_enter(LBS_DEB_CFG80211);
516
517 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
518
519 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
520 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
521
522 if (scanresp->nr_sets == 0) {
523 ret = 0;
524 goto done;
525 }
526
527 /*
528 * The general layout of the scan response is described in chapter
529 * 5.7.1. Basically we have a common part, then any number of BSS
530 * descriptor sections. Finally we have section with the same number
531 * of TSFs.
532 *
533 * cmd_ds_802_11_scan_rsp
534 * cmd_header
535 * pos_size
536 * nr_sets
537 * bssdesc 1
538 * bssid
539 * rssi
540 * timestamp
541 * intvl
542 * capa
543 * IEs
544 * bssdesc 2
545 * bssdesc n
546 * MrvlIEtypes_TsfFimestamp_t
547 * TSF for BSS 1
548 * TSF for BSS 2
549 * TSF for BSS n
550 */
551
552 pos = scanresp->bssdesc_and_tlvbuffer;
553
554 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
555 scanresp->bssdescriptsize);
556
557 tsfdesc = pos + bsssize;
558 tsfsize = 4 + 8 * scanresp->nr_sets;
559 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
560
561 /* Validity check: we expect a Marvell-Local TLV */
562 i = get_unaligned_le16(tsfdesc);
563 tsfdesc += 2;
564 if (i != TLV_TYPE_TSFTIMESTAMP) {
565 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
566 goto done;
567 }
568
569 /*
570 * Validity check: the TLV holds TSF values with 8 bytes each, so
571 * the size in the TLV must match the nr_sets value
572 */
573 i = get_unaligned_le16(tsfdesc);
574 tsfdesc += 2;
575 if (i / 8 != scanresp->nr_sets) {
576 lbs_deb_scan("scan response: invalid number of TSF timestamp "
577 "sets (expected %d got %d)\n", scanresp->nr_sets,
578 i / 8);
579 goto done;
580 }
581
582 for (i = 0; i < scanresp->nr_sets; i++) {
583 const u8 *bssid;
584 const u8 *ie;
585 int left;
586 int ielen;
587 int rssi;
588 u16 intvl;
589 u16 capa;
590 int chan_no = -1;
591 const u8 *ssid = NULL;
592 u8 ssid_len = 0;
593
594 int len = get_unaligned_le16(pos);
595 pos += 2;
596
597 /* BSSID */
598 bssid = pos;
599 pos += ETH_ALEN;
600 /* RSSI */
601 rssi = *pos++;
602 /* Packet time stamp */
603 pos += 8;
604 /* Beacon interval */
605 intvl = get_unaligned_le16(pos);
606 pos += 2;
607 /* Capabilities */
608 capa = get_unaligned_le16(pos);
609 pos += 2;
610
611 /* To find out the channel, we must parse the IEs */
612 ie = pos;
613 /*
614 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
615 * interval, capabilities
616 */
617 ielen = left = len - (6 + 1 + 8 + 2 + 2);
618 while (left >= 2) {
619 u8 id, elen;
620 id = *pos++;
621 elen = *pos++;
622 left -= 2;
623 if (elen > left) {
624 lbs_deb_scan("scan response: invalid IE fmt\n");
625 goto done;
626 }
627
628 if (id == WLAN_EID_DS_PARAMS)
629 chan_no = *pos;
630 if (id == WLAN_EID_SSID) {
631 ssid = pos;
632 ssid_len = elen;
633 }
634 left -= elen;
635 pos += elen;
636 }
637
638 /* No channel, no luck */
639 if (chan_no != -1) {
640 struct wiphy *wiphy = priv->wdev->wiphy;
641 int freq = ieee80211_channel_to_frequency(chan_no,
642 IEEE80211_BAND_2GHZ);
643 struct ieee80211_channel *channel =
644 ieee80211_get_channel(wiphy, freq);
645
646 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
647 bssid, capa, chan_no, ssid_len, ssid,
648 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
649
650 if (channel &&
651 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
652 bss = cfg80211_inform_bss(wiphy, channel,
653 CFG80211_BSS_FTYPE_UNKNOWN,
654 bssid, get_unaligned_le64(tsfdesc),
655 capa, intvl, ie, ielen,
656 LBS_SCAN_RSSI_TO_MBM(rssi),
657 GFP_KERNEL);
658 cfg80211_put_bss(wiphy, bss);
659 }
660 } else
661 lbs_deb_scan("scan response: missing BSS channel IE\n");
662
663 tsfdesc += 8;
664 }
665 ret = 0;
666
667 done:
668 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
669 return ret;
670 }
671
672
673 /*
674 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
675 * TLV and a rates TLV. Determine the maximum size of them:
676 */
677 #define LBS_SCAN_MAX_CMD_SIZE \
678 (sizeof(struct cmd_ds_802_11_scan) \
679 + LBS_MAX_SSID_TLV_SIZE \
680 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
681 + LBS_MAX_RATES_TLV_SIZE)
682
683 /*
684 * Assumes priv->scan_req is initialized and valid
685 * Assumes priv->scan_channel is initialized
686 */
687 static void lbs_scan_worker(struct work_struct *work)
688 {
689 struct lbs_private *priv =
690 container_of(work, struct lbs_private, scan_work.work);
691 struct cmd_ds_802_11_scan *scan_cmd;
692 u8 *tlv; /* pointer into our current, growing TLV storage area */
693 int last_channel;
694 int running, carrier;
695
696 lbs_deb_enter(LBS_DEB_SCAN);
697
698 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
699 if (scan_cmd == NULL)
700 goto out_no_scan_cmd;
701
702 /* prepare fixed part of scan command */
703 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
704
705 /* stop network while we're away from our main channel */
706 running = !netif_queue_stopped(priv->dev);
707 carrier = netif_carrier_ok(priv->dev);
708 if (running)
709 netif_stop_queue(priv->dev);
710 if (carrier)
711 netif_carrier_off(priv->dev);
712
713 /* prepare fixed part of scan command */
714 tlv = scan_cmd->tlvbuffer;
715
716 /* add SSID TLV */
717 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
718 tlv += lbs_add_ssid_tlv(tlv,
719 priv->scan_req->ssids[0].ssid,
720 priv->scan_req->ssids[0].ssid_len);
721
722 /* add channel TLVs */
723 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
724 if (last_channel > priv->scan_req->n_channels)
725 last_channel = priv->scan_req->n_channels;
726 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
727 priv->scan_req->n_ssids);
728
729 /* add rates TLV */
730 tlv += lbs_add_supported_rates_tlv(tlv);
731
732 if (priv->scan_channel < priv->scan_req->n_channels) {
733 cancel_delayed_work(&priv->scan_work);
734 if (netif_running(priv->dev))
735 queue_delayed_work(priv->work_thread, &priv->scan_work,
736 msecs_to_jiffies(300));
737 }
738
739 /* This is the final data we are about to send */
740 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
741 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
742 sizeof(*scan_cmd));
743 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
744 tlv - scan_cmd->tlvbuffer);
745
746 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
747 le16_to_cpu(scan_cmd->hdr.size),
748 lbs_ret_scan, 0);
749
750 if (priv->scan_channel >= priv->scan_req->n_channels) {
751 /* Mark scan done */
752 cancel_delayed_work(&priv->scan_work);
753 lbs_scan_done(priv);
754 }
755
756 /* Restart network */
757 if (carrier)
758 netif_carrier_on(priv->dev);
759 if (running && !priv->tx_pending_len)
760 netif_wake_queue(priv->dev);
761
762 kfree(scan_cmd);
763
764 /* Wake up anything waiting on scan completion */
765 if (priv->scan_req == NULL) {
766 lbs_deb_scan("scan: waking up waiters\n");
767 wake_up_all(&priv->scan_q);
768 }
769
770 out_no_scan_cmd:
771 lbs_deb_leave(LBS_DEB_SCAN);
772 }
773
774 static void _internal_start_scan(struct lbs_private *priv, bool internal,
775 struct cfg80211_scan_request *request)
776 {
777 lbs_deb_enter(LBS_DEB_CFG80211);
778
779 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
780 request->n_ssids, request->n_channels, request->ie_len);
781
782 priv->scan_channel = 0;
783 priv->scan_req = request;
784 priv->internal_scan = internal;
785
786 queue_delayed_work(priv->work_thread, &priv->scan_work,
787 msecs_to_jiffies(50));
788
789 lbs_deb_leave(LBS_DEB_CFG80211);
790 }
791
792 /*
793 * Clean up priv->scan_req. Should be used to handle the allocation details.
794 */
795 void lbs_scan_done(struct lbs_private *priv)
796 {
797 WARN_ON(!priv->scan_req);
798
799 if (priv->internal_scan)
800 kfree(priv->scan_req);
801 else
802 cfg80211_scan_done(priv->scan_req, false);
803
804 priv->scan_req = NULL;
805 }
806
807 static int lbs_cfg_scan(struct wiphy *wiphy,
808 struct cfg80211_scan_request *request)
809 {
810 struct lbs_private *priv = wiphy_priv(wiphy);
811 int ret = 0;
812
813 lbs_deb_enter(LBS_DEB_CFG80211);
814
815 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
816 /* old scan request not yet processed */
817 ret = -EAGAIN;
818 goto out;
819 }
820
821 _internal_start_scan(priv, false, request);
822
823 if (priv->surpriseremoved)
824 ret = -EIO;
825
826 out:
827 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
828 return ret;
829 }
830
831
832
833
834 /*
835 * Events
836 */
837
838 void lbs_send_disconnect_notification(struct lbs_private *priv,
839 bool locally_generated)
840 {
841 lbs_deb_enter(LBS_DEB_CFG80211);
842
843 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
844 GFP_KERNEL);
845
846 lbs_deb_leave(LBS_DEB_CFG80211);
847 }
848
849 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
850 {
851 lbs_deb_enter(LBS_DEB_CFG80211);
852
853 cfg80211_michael_mic_failure(priv->dev,
854 priv->assoc_bss,
855 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
856 NL80211_KEYTYPE_GROUP :
857 NL80211_KEYTYPE_PAIRWISE,
858 -1,
859 NULL,
860 GFP_KERNEL);
861
862 lbs_deb_leave(LBS_DEB_CFG80211);
863 }
864
865
866
867
868 /*
869 * Connect/disconnect
870 */
871
872
873 /*
874 * This removes all WEP keys
875 */
876 static int lbs_remove_wep_keys(struct lbs_private *priv)
877 {
878 struct cmd_ds_802_11_set_wep cmd;
879 int ret;
880
881 lbs_deb_enter(LBS_DEB_CFG80211);
882
883 memset(&cmd, 0, sizeof(cmd));
884 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
885 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
886 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
887
888 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
889
890 lbs_deb_leave(LBS_DEB_CFG80211);
891 return ret;
892 }
893
894 /*
895 * Set WEP keys
896 */
897 static int lbs_set_wep_keys(struct lbs_private *priv)
898 {
899 struct cmd_ds_802_11_set_wep cmd;
900 int i;
901 int ret;
902
903 lbs_deb_enter(LBS_DEB_CFG80211);
904
905 /*
906 * command 13 00
907 * size 50 00
908 * sequence xx xx
909 * result 00 00
910 * action 02 00 ACT_ADD
911 * transmit key 00 00
912 * type for key 1 01 WEP40
913 * type for key 2 00
914 * type for key 3 00
915 * type for key 4 00
916 * key 1 39 39 39 39 39 00 00 00
917 * 00 00 00 00 00 00 00 00
918 * key 2 00 00 00 00 00 00 00 00
919 * 00 00 00 00 00 00 00 00
920 * key 3 00 00 00 00 00 00 00 00
921 * 00 00 00 00 00 00 00 00
922 * key 4 00 00 00 00 00 00 00 00
923 */
924 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
925 priv->wep_key_len[2] || priv->wep_key_len[3]) {
926 /* Only set wep keys if we have at least one of them */
927 memset(&cmd, 0, sizeof(cmd));
928 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
929 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
930 cmd.action = cpu_to_le16(CMD_ACT_ADD);
931
932 for (i = 0; i < 4; i++) {
933 switch (priv->wep_key_len[i]) {
934 case WLAN_KEY_LEN_WEP40:
935 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
936 break;
937 case WLAN_KEY_LEN_WEP104:
938 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
939 break;
940 default:
941 cmd.keytype[i] = 0;
942 break;
943 }
944 memcpy(cmd.keymaterial[i], priv->wep_key[i],
945 priv->wep_key_len[i]);
946 }
947
948 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
949 } else {
950 /* Otherwise remove all wep keys */
951 ret = lbs_remove_wep_keys(priv);
952 }
953
954 lbs_deb_leave(LBS_DEB_CFG80211);
955 return ret;
956 }
957
958
959 /*
960 * Enable/Disable RSN status
961 */
962 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
963 {
964 struct cmd_ds_802_11_enable_rsn cmd;
965 int ret;
966
967 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
968
969 /*
970 * cmd 2f 00
971 * size 0c 00
972 * sequence xx xx
973 * result 00 00
974 * action 01 00 ACT_SET
975 * enable 01 00
976 */
977 memset(&cmd, 0, sizeof(cmd));
978 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
979 cmd.action = cpu_to_le16(CMD_ACT_SET);
980 cmd.enable = cpu_to_le16(enable);
981
982 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
983
984 lbs_deb_leave(LBS_DEB_CFG80211);
985 return ret;
986 }
987
988
989 /*
990 * Set WPA/WPA key material
991 */
992
993 /*
994 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
995 * get rid of WEXT, this should go into host.h
996 */
997
998 struct cmd_key_material {
999 struct cmd_header hdr;
1000
1001 __le16 action;
1002 struct MrvlIEtype_keyParamSet param;
1003 } __packed;
1004
1005 static int lbs_set_key_material(struct lbs_private *priv,
1006 int key_type, int key_info,
1007 const u8 *key, u16 key_len)
1008 {
1009 struct cmd_key_material cmd;
1010 int ret;
1011
1012 lbs_deb_enter(LBS_DEB_CFG80211);
1013
1014 /*
1015 * Example for WPA (TKIP):
1016 *
1017 * cmd 5e 00
1018 * size 34 00
1019 * sequence xx xx
1020 * result 00 00
1021 * action 01 00
1022 * TLV type 00 01 key param
1023 * length 00 26
1024 * key type 01 00 TKIP
1025 * key info 06 00 UNICAST | ENABLED
1026 * key len 20 00
1027 * key 32 bytes
1028 */
1029 memset(&cmd, 0, sizeof(cmd));
1030 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1031 cmd.action = cpu_to_le16(CMD_ACT_SET);
1032 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1033 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1034 cmd.param.keytypeid = cpu_to_le16(key_type);
1035 cmd.param.keyinfo = cpu_to_le16(key_info);
1036 cmd.param.keylen = cpu_to_le16(key_len);
1037 if (key && key_len)
1038 memcpy(cmd.param.key, key, key_len);
1039
1040 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1041
1042 lbs_deb_leave(LBS_DEB_CFG80211);
1043 return ret;
1044 }
1045
1046
1047 /*
1048 * Sets the auth type (open, shared, etc) in the firmware. That
1049 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1050 * command doesn't send an authentication frame at all, it just
1051 * stores the auth_type.
1052 */
1053 static int lbs_set_authtype(struct lbs_private *priv,
1054 struct cfg80211_connect_params *sme)
1055 {
1056 struct cmd_ds_802_11_authenticate cmd;
1057 int ret;
1058
1059 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1060
1061 /*
1062 * cmd 11 00
1063 * size 19 00
1064 * sequence xx xx
1065 * result 00 00
1066 * BSS id 00 13 19 80 da 30
1067 * auth type 00
1068 * reserved 00 00 00 00 00 00 00 00 00 00
1069 */
1070 memset(&cmd, 0, sizeof(cmd));
1071 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1072 if (sme->bssid)
1073 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1074 /* convert auth_type */
1075 ret = lbs_auth_to_authtype(sme->auth_type);
1076 if (ret < 0)
1077 goto done;
1078
1079 cmd.authtype = ret;
1080 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1081
1082 done:
1083 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1084 return ret;
1085 }
1086
1087
1088 /*
1089 * Create association request
1090 */
1091 #define LBS_ASSOC_MAX_CMD_SIZE \
1092 (sizeof(struct cmd_ds_802_11_associate) \
1093 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1094 + LBS_MAX_SSID_TLV_SIZE \
1095 + LBS_MAX_CHANNEL_TLV_SIZE \
1096 + LBS_MAX_CF_PARAM_TLV_SIZE \
1097 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1098 + LBS_MAX_WPA_TLV_SIZE)
1099
1100 static int lbs_associate(struct lbs_private *priv,
1101 struct cfg80211_bss *bss,
1102 struct cfg80211_connect_params *sme)
1103 {
1104 struct cmd_ds_802_11_associate_response *resp;
1105 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1106 GFP_KERNEL);
1107 const u8 *ssid_eid;
1108 size_t len, resp_ie_len;
1109 int status;
1110 int ret;
1111 u8 *pos = &(cmd->iebuf[0]);
1112 u8 *tmp;
1113
1114 lbs_deb_enter(LBS_DEB_CFG80211);
1115
1116 if (!cmd) {
1117 ret = -ENOMEM;
1118 goto done;
1119 }
1120
1121 /*
1122 * cmd 50 00
1123 * length 34 00
1124 * sequence xx xx
1125 * result 00 00
1126 * BSS id 00 13 19 80 da 30
1127 * capabilities 11 00
1128 * listen interval 0a 00
1129 * beacon interval 00 00
1130 * DTIM period 00
1131 * TLVs xx (up to 512 bytes)
1132 */
1133 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1134
1135 /* Fill in static fields */
1136 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1137 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1138 cmd->capability = cpu_to_le16(bss->capability);
1139
1140 /* add SSID TLV */
1141 rcu_read_lock();
1142 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1143 if (ssid_eid)
1144 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1145 else
1146 lbs_deb_assoc("no SSID\n");
1147 rcu_read_unlock();
1148
1149 /* add DS param TLV */
1150 if (bss->channel)
1151 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1152 else
1153 lbs_deb_assoc("no channel\n");
1154
1155 /* add (empty) CF param TLV */
1156 pos += lbs_add_cf_param_tlv(pos);
1157
1158 /* add rates TLV */
1159 tmp = pos + 4; /* skip Marvell IE header */
1160 pos += lbs_add_common_rates_tlv(pos, bss);
1161 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1162
1163 /* add auth type TLV */
1164 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1165 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1166
1167 /* add WPA/WPA2 TLV */
1168 if (sme->ie && sme->ie_len)
1169 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1170
1171 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1172 (u16)(pos - (u8 *) &cmd->iebuf);
1173 cmd->hdr.size = cpu_to_le16(len);
1174
1175 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1176 le16_to_cpu(cmd->hdr.size));
1177
1178 /* store for later use */
1179 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1180
1181 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1182 if (ret)
1183 goto done;
1184
1185 /* generate connect message to cfg80211 */
1186
1187 resp = (void *) cmd; /* recast for easier field access */
1188 status = le16_to_cpu(resp->statuscode);
1189
1190 /* Older FW versions map the IEEE 802.11 Status Code in the association
1191 * response to the following values returned in resp->statuscode:
1192 *
1193 * IEEE Status Code Marvell Status Code
1194 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1195 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1196 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1197 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1198 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1199 * others -> 0x0003 ASSOC_RESULT_REFUSED
1200 *
1201 * Other response codes:
1202 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1203 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1204 * association response from the AP)
1205 */
1206 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1207 switch (status) {
1208 case 0:
1209 break;
1210 case 1:
1211 lbs_deb_assoc("invalid association parameters\n");
1212 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1213 break;
1214 case 2:
1215 lbs_deb_assoc("timer expired while waiting for AP\n");
1216 status = WLAN_STATUS_AUTH_TIMEOUT;
1217 break;
1218 case 3:
1219 lbs_deb_assoc("association refused by AP\n");
1220 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1221 break;
1222 case 4:
1223 lbs_deb_assoc("authentication refused by AP\n");
1224 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1225 break;
1226 default:
1227 lbs_deb_assoc("association failure %d\n", status);
1228 /* v5 OLPC firmware does return the AP status code if
1229 * it's not one of the values above. Let that through.
1230 */
1231 break;
1232 }
1233 }
1234
1235 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1236 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1237 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1238
1239 resp_ie_len = le16_to_cpu(resp->hdr.size)
1240 - sizeof(resp->hdr)
1241 - 6;
1242 cfg80211_connect_result(priv->dev,
1243 priv->assoc_bss,
1244 sme->ie, sme->ie_len,
1245 resp->iebuf, resp_ie_len,
1246 status,
1247 GFP_KERNEL);
1248
1249 if (status == 0) {
1250 /* TODO: get rid of priv->connect_status */
1251 priv->connect_status = LBS_CONNECTED;
1252 netif_carrier_on(priv->dev);
1253 if (!priv->tx_pending_len)
1254 netif_tx_wake_all_queues(priv->dev);
1255 }
1256
1257 kfree(cmd);
1258 done:
1259 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1260 return ret;
1261 }
1262
1263 static struct cfg80211_scan_request *
1264 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1265 {
1266 struct cfg80211_scan_request *creq = NULL;
1267 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1268 enum ieee80211_band band;
1269
1270 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1271 n_channels * sizeof(void *),
1272 GFP_ATOMIC);
1273 if (!creq)
1274 return NULL;
1275
1276 /* SSIDs come after channels */
1277 creq->ssids = (void *)&creq->channels[n_channels];
1278 creq->n_channels = n_channels;
1279 creq->n_ssids = 1;
1280
1281 /* Scan all available channels */
1282 i = 0;
1283 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1284 int j;
1285
1286 if (!wiphy->bands[band])
1287 continue;
1288
1289 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1290 /* ignore disabled channels */
1291 if (wiphy->bands[band]->channels[j].flags &
1292 IEEE80211_CHAN_DISABLED)
1293 continue;
1294
1295 creq->channels[i] = &wiphy->bands[band]->channels[j];
1296 i++;
1297 }
1298 }
1299 if (i) {
1300 /* Set real number of channels specified in creq->channels[] */
1301 creq->n_channels = i;
1302
1303 /* Scan for the SSID we're going to connect to */
1304 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1305 creq->ssids[0].ssid_len = sme->ssid_len;
1306 } else {
1307 /* No channels found... */
1308 kfree(creq);
1309 creq = NULL;
1310 }
1311
1312 return creq;
1313 }
1314
1315 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1316 struct cfg80211_connect_params *sme)
1317 {
1318 struct lbs_private *priv = wiphy_priv(wiphy);
1319 struct cfg80211_bss *bss = NULL;
1320 int ret = 0;
1321 u8 preamble = RADIO_PREAMBLE_SHORT;
1322
1323 if (dev == priv->mesh_dev)
1324 return -EOPNOTSUPP;
1325
1326 lbs_deb_enter(LBS_DEB_CFG80211);
1327
1328 if (!sme->bssid) {
1329 struct cfg80211_scan_request *creq;
1330
1331 /*
1332 * Scan for the requested network after waiting for existing
1333 * scans to finish.
1334 */
1335 lbs_deb_assoc("assoc: waiting for existing scans\n");
1336 wait_event_interruptible_timeout(priv->scan_q,
1337 (priv->scan_req == NULL),
1338 (15 * HZ));
1339
1340 creq = _new_connect_scan_req(wiphy, sme);
1341 if (!creq) {
1342 ret = -EINVAL;
1343 goto done;
1344 }
1345
1346 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1347 _internal_start_scan(priv, true, creq);
1348
1349 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1350 wait_event_interruptible_timeout(priv->scan_q,
1351 (priv->scan_req == NULL),
1352 (15 * HZ));
1353 lbs_deb_assoc("assoc: scanning completed\n");
1354 }
1355
1356 /* Find the BSS we want using available scan results */
1357 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1358 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1359 IEEE80211_PRIVACY_ANY);
1360 if (!bss) {
1361 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1362 sme->bssid);
1363 ret = -ENOENT;
1364 goto done;
1365 }
1366 lbs_deb_assoc("trying %pM\n", bss->bssid);
1367 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1368 sme->crypto.cipher_group,
1369 sme->key_idx, sme->key_len);
1370
1371 /* As this is a new connection, clear locally stored WEP keys */
1372 priv->wep_tx_key = 0;
1373 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1374 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1375
1376 /* set/remove WEP keys */
1377 switch (sme->crypto.cipher_group) {
1378 case WLAN_CIPHER_SUITE_WEP40:
1379 case WLAN_CIPHER_SUITE_WEP104:
1380 /* Store provided WEP keys in priv-> */
1381 priv->wep_tx_key = sme->key_idx;
1382 priv->wep_key_len[sme->key_idx] = sme->key_len;
1383 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1384 /* Set WEP keys and WEP mode */
1385 lbs_set_wep_keys(priv);
1386 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1387 lbs_set_mac_control(priv);
1388 /* No RSN mode for WEP */
1389 lbs_enable_rsn(priv, 0);
1390 break;
1391 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1392 /*
1393 * If we don't have no WEP, no WPA and no WPA2,
1394 * we remove all keys like in the WPA/WPA2 setup,
1395 * we just don't set RSN.
1396 *
1397 * Therefore: fall-through
1398 */
1399 case WLAN_CIPHER_SUITE_TKIP:
1400 case WLAN_CIPHER_SUITE_CCMP:
1401 /* Remove WEP keys and WEP mode */
1402 lbs_remove_wep_keys(priv);
1403 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1404 lbs_set_mac_control(priv);
1405
1406 /* clear the WPA/WPA2 keys */
1407 lbs_set_key_material(priv,
1408 KEY_TYPE_ID_WEP, /* doesn't matter */
1409 KEY_INFO_WPA_UNICAST,
1410 NULL, 0);
1411 lbs_set_key_material(priv,
1412 KEY_TYPE_ID_WEP, /* doesn't matter */
1413 KEY_INFO_WPA_MCAST,
1414 NULL, 0);
1415 /* RSN mode for WPA/WPA2 */
1416 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1417 break;
1418 default:
1419 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1420 sme->crypto.cipher_group);
1421 ret = -ENOTSUPP;
1422 goto done;
1423 }
1424
1425 ret = lbs_set_authtype(priv, sme);
1426 if (ret == -ENOTSUPP) {
1427 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1428 goto done;
1429 }
1430
1431 lbs_set_radio(priv, preamble, 1);
1432
1433 /* Do the actual association */
1434 ret = lbs_associate(priv, bss, sme);
1435
1436 done:
1437 if (bss)
1438 cfg80211_put_bss(wiphy, bss);
1439 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1440 return ret;
1441 }
1442
1443 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1444 {
1445 struct cmd_ds_802_11_deauthenticate cmd;
1446 int ret;
1447
1448 memset(&cmd, 0, sizeof(cmd));
1449 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1450 /* Mildly ugly to use a locally store my own BSSID ... */
1451 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1452 cmd.reasoncode = cpu_to_le16(reason);
1453
1454 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1455 if (ret)
1456 return ret;
1457
1458 cfg80211_disconnected(priv->dev,
1459 reason,
1460 NULL, 0, true,
1461 GFP_KERNEL);
1462 priv->connect_status = LBS_DISCONNECTED;
1463
1464 return 0;
1465 }
1466
1467 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1468 u16 reason_code)
1469 {
1470 struct lbs_private *priv = wiphy_priv(wiphy);
1471
1472 if (dev == priv->mesh_dev)
1473 return -EOPNOTSUPP;
1474
1475 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1476
1477 /* store for lbs_cfg_ret_disconnect() */
1478 priv->disassoc_reason = reason_code;
1479
1480 return lbs_disconnect(priv, reason_code);
1481 }
1482
1483 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1484 struct net_device *netdev,
1485 u8 key_index, bool unicast,
1486 bool multicast)
1487 {
1488 struct lbs_private *priv = wiphy_priv(wiphy);
1489
1490 if (netdev == priv->mesh_dev)
1491 return -EOPNOTSUPP;
1492
1493 lbs_deb_enter(LBS_DEB_CFG80211);
1494
1495 if (key_index != priv->wep_tx_key) {
1496 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1497 priv->wep_tx_key = key_index;
1498 lbs_set_wep_keys(priv);
1499 }
1500
1501 return 0;
1502 }
1503
1504
1505 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1506 u8 idx, bool pairwise, const u8 *mac_addr,
1507 struct key_params *params)
1508 {
1509 struct lbs_private *priv = wiphy_priv(wiphy);
1510 u16 key_info;
1511 u16 key_type;
1512 int ret = 0;
1513
1514 if (netdev == priv->mesh_dev)
1515 return -EOPNOTSUPP;
1516
1517 lbs_deb_enter(LBS_DEB_CFG80211);
1518
1519 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1520 params->cipher, mac_addr);
1521 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1522 idx, params->key_len);
1523 if (params->key_len)
1524 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1525 params->key, params->key_len);
1526
1527 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1528 if (params->seq_len)
1529 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1530 params->seq, params->seq_len);
1531
1532 switch (params->cipher) {
1533 case WLAN_CIPHER_SUITE_WEP40:
1534 case WLAN_CIPHER_SUITE_WEP104:
1535 /* actually compare if something has changed ... */
1536 if ((priv->wep_key_len[idx] != params->key_len) ||
1537 memcmp(priv->wep_key[idx],
1538 params->key, params->key_len) != 0) {
1539 priv->wep_key_len[idx] = params->key_len;
1540 memcpy(priv->wep_key[idx],
1541 params->key, params->key_len);
1542 lbs_set_wep_keys(priv);
1543 }
1544 break;
1545 case WLAN_CIPHER_SUITE_TKIP:
1546 case WLAN_CIPHER_SUITE_CCMP:
1547 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1548 ? KEY_INFO_WPA_UNICAST
1549 : KEY_INFO_WPA_MCAST);
1550 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1551 ? KEY_TYPE_ID_TKIP
1552 : KEY_TYPE_ID_AES;
1553 lbs_set_key_material(priv,
1554 key_type,
1555 key_info,
1556 params->key, params->key_len);
1557 break;
1558 default:
1559 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1560 ret = -ENOTSUPP;
1561 break;
1562 }
1563
1564 return ret;
1565 }
1566
1567
1568 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1569 u8 key_index, bool pairwise, const u8 *mac_addr)
1570 {
1571
1572 lbs_deb_enter(LBS_DEB_CFG80211);
1573
1574 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1575 key_index, mac_addr);
1576
1577 #ifdef TODO
1578 struct lbs_private *priv = wiphy_priv(wiphy);
1579 /*
1580 * I think can keep this a NO-OP, because:
1581
1582 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1583 * - neither "iw" nor "wpa_supplicant" won't call this during
1584 * an ongoing connection
1585 * - TODO: but I have to check if this is still true when
1586 * I set the AP to periodic re-keying
1587 * - we've not kzallec() something when we've added a key at
1588 * lbs_cfg_connect() or lbs_cfg_add_key().
1589 *
1590 * This causes lbs_cfg_del_key() only called at disconnect time,
1591 * where we'd just waste time deleting a key that is not going
1592 * to be used anyway.
1593 */
1594 if (key_index < 3 && priv->wep_key_len[key_index]) {
1595 priv->wep_key_len[key_index] = 0;
1596 lbs_set_wep_keys(priv);
1597 }
1598 #endif
1599
1600 return 0;
1601 }
1602
1603
1604 /*
1605 * Get station
1606 */
1607
1608 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1609 const u8 *mac, struct station_info *sinfo)
1610 {
1611 struct lbs_private *priv = wiphy_priv(wiphy);
1612 s8 signal, noise;
1613 int ret;
1614 size_t i;
1615
1616 lbs_deb_enter(LBS_DEB_CFG80211);
1617
1618 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1619 BIT(NL80211_STA_INFO_TX_PACKETS) |
1620 BIT(NL80211_STA_INFO_RX_BYTES) |
1621 BIT(NL80211_STA_INFO_RX_PACKETS);
1622 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1623 sinfo->tx_packets = priv->dev->stats.tx_packets;
1624 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1625 sinfo->rx_packets = priv->dev->stats.rx_packets;
1626
1627 /* Get current RSSI */
1628 ret = lbs_get_rssi(priv, &signal, &noise);
1629 if (ret == 0) {
1630 sinfo->signal = signal;
1631 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1632 }
1633
1634 /* Convert priv->cur_rate from hw_value to NL80211 value */
1635 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1636 if (priv->cur_rate == lbs_rates[i].hw_value) {
1637 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1638 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1639 break;
1640 }
1641 }
1642
1643 return 0;
1644 }
1645
1646
1647
1648
1649 /*
1650 * Change interface
1651 */
1652
1653 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1654 enum nl80211_iftype type, u32 *flags,
1655 struct vif_params *params)
1656 {
1657 struct lbs_private *priv = wiphy_priv(wiphy);
1658 int ret = 0;
1659
1660 if (dev == priv->mesh_dev)
1661 return -EOPNOTSUPP;
1662
1663 switch (type) {
1664 case NL80211_IFTYPE_MONITOR:
1665 case NL80211_IFTYPE_STATION:
1666 case NL80211_IFTYPE_ADHOC:
1667 break;
1668 default:
1669 return -EOPNOTSUPP;
1670 }
1671
1672 lbs_deb_enter(LBS_DEB_CFG80211);
1673
1674 if (priv->iface_running)
1675 ret = lbs_set_iface_type(priv, type);
1676
1677 if (!ret)
1678 priv->wdev->iftype = type;
1679
1680 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1681 return ret;
1682 }
1683
1684
1685
1686 /*
1687 * IBSS (Ad-Hoc)
1688 */
1689
1690 /*
1691 * The firmware needs the following bits masked out of the beacon-derived
1692 * capability field when associating/joining to a BSS:
1693 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1694 */
1695 #define CAPINFO_MASK (~(0xda00))
1696
1697
1698 static void lbs_join_post(struct lbs_private *priv,
1699 struct cfg80211_ibss_params *params,
1700 u8 *bssid, u16 capability)
1701 {
1702 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1703 2 + 4 + /* basic rates */
1704 2 + 1 + /* DS parameter */
1705 2 + 2 + /* atim */
1706 2 + 8]; /* extended rates */
1707 u8 *fake = fake_ie;
1708 struct cfg80211_bss *bss;
1709
1710 lbs_deb_enter(LBS_DEB_CFG80211);
1711
1712 /*
1713 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1714 * the real IE from the firmware. So we fabricate a fake IE based on
1715 * what the firmware actually sends (sniffed with wireshark).
1716 */
1717 /* Fake SSID IE */
1718 *fake++ = WLAN_EID_SSID;
1719 *fake++ = params->ssid_len;
1720 memcpy(fake, params->ssid, params->ssid_len);
1721 fake += params->ssid_len;
1722 /* Fake supported basic rates IE */
1723 *fake++ = WLAN_EID_SUPP_RATES;
1724 *fake++ = 4;
1725 *fake++ = 0x82;
1726 *fake++ = 0x84;
1727 *fake++ = 0x8b;
1728 *fake++ = 0x96;
1729 /* Fake DS channel IE */
1730 *fake++ = WLAN_EID_DS_PARAMS;
1731 *fake++ = 1;
1732 *fake++ = params->chandef.chan->hw_value;
1733 /* Fake IBSS params IE */
1734 *fake++ = WLAN_EID_IBSS_PARAMS;
1735 *fake++ = 2;
1736 *fake++ = 0; /* ATIM=0 */
1737 *fake++ = 0;
1738 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1739 * but I don't know how this could be checked */
1740 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1741 *fake++ = 8;
1742 *fake++ = 0x0c;
1743 *fake++ = 0x12;
1744 *fake++ = 0x18;
1745 *fake++ = 0x24;
1746 *fake++ = 0x30;
1747 *fake++ = 0x48;
1748 *fake++ = 0x60;
1749 *fake++ = 0x6c;
1750 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1751
1752 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1753 params->chandef.chan,
1754 CFG80211_BSS_FTYPE_UNKNOWN,
1755 bssid,
1756 0,
1757 capability,
1758 params->beacon_interval,
1759 fake_ie, fake - fake_ie,
1760 0, GFP_KERNEL);
1761 cfg80211_put_bss(priv->wdev->wiphy, bss);
1762
1763 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1764 priv->wdev->ssid_len = params->ssid_len;
1765
1766 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1767 GFP_KERNEL);
1768
1769 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1770 priv->connect_status = LBS_CONNECTED;
1771 netif_carrier_on(priv->dev);
1772 if (!priv->tx_pending_len)
1773 netif_wake_queue(priv->dev);
1774
1775 lbs_deb_leave(LBS_DEB_CFG80211);
1776 }
1777
1778 static int lbs_ibss_join_existing(struct lbs_private *priv,
1779 struct cfg80211_ibss_params *params,
1780 struct cfg80211_bss *bss)
1781 {
1782 const u8 *rates_eid;
1783 struct cmd_ds_802_11_ad_hoc_join cmd;
1784 u8 preamble = RADIO_PREAMBLE_SHORT;
1785 int ret = 0;
1786
1787 lbs_deb_enter(LBS_DEB_CFG80211);
1788
1789 /* TODO: set preamble based on scan result */
1790 ret = lbs_set_radio(priv, preamble, 1);
1791 if (ret)
1792 goto out;
1793
1794 /*
1795 * Example CMD_802_11_AD_HOC_JOIN command:
1796 *
1797 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1798 * size 65 00
1799 * sequence xx xx
1800 * result 00 00
1801 * bssid 02 27 27 97 2f 96
1802 * ssid 49 42 53 53 00 00 00 00
1803 * 00 00 00 00 00 00 00 00
1804 * 00 00 00 00 00 00 00 00
1805 * 00 00 00 00 00 00 00 00
1806 * type 02 CMD_BSS_TYPE_IBSS
1807 * beacon period 64 00
1808 * dtim period 00
1809 * timestamp 00 00 00 00 00 00 00 00
1810 * localtime 00 00 00 00 00 00 00 00
1811 * IE DS 03
1812 * IE DS len 01
1813 * IE DS channel 01
1814 * reserveed 00 00 00 00
1815 * IE IBSS 06
1816 * IE IBSS len 02
1817 * IE IBSS atim 00 00
1818 * reserved 00 00 00 00
1819 * capability 02 00
1820 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1821 * fail timeout ff 00
1822 * probe delay 00 00
1823 */
1824 memset(&cmd, 0, sizeof(cmd));
1825 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1826
1827 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1828 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1829 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1830 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1831 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1832 cmd.bss.ds.header.len = 1;
1833 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1834 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1835 cmd.bss.ibss.header.len = 2;
1836 cmd.bss.ibss.atimwindow = 0;
1837 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1838
1839 /* set rates to the intersection of our rates and the rates in the
1840 bss */
1841 rcu_read_lock();
1842 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1843 if (!rates_eid) {
1844 lbs_add_rates(cmd.bss.rates);
1845 } else {
1846 int hw, i;
1847 u8 rates_max = rates_eid[1];
1848 u8 *rates = cmd.bss.rates;
1849 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1850 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1851 for (i = 0; i < rates_max; i++) {
1852 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1853 u8 rate = rates_eid[i+2];
1854 if (rate == 0x02 || rate == 0x04 ||
1855 rate == 0x0b || rate == 0x16)
1856 rate |= 0x80;
1857 *rates++ = rate;
1858 }
1859 }
1860 }
1861 }
1862 rcu_read_unlock();
1863
1864 /* Only v8 and below support setting this */
1865 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1866 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1867 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1868 }
1869 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1870 if (ret)
1871 goto out;
1872
1873 /*
1874 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1875 *
1876 * response 2c 80
1877 * size 09 00
1878 * sequence xx xx
1879 * result 00 00
1880 * reserved 00
1881 */
1882 lbs_join_post(priv, params, bss->bssid, bss->capability);
1883
1884 out:
1885 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1886 return ret;
1887 }
1888
1889
1890
1891 static int lbs_ibss_start_new(struct lbs_private *priv,
1892 struct cfg80211_ibss_params *params)
1893 {
1894 struct cmd_ds_802_11_ad_hoc_start cmd;
1895 struct cmd_ds_802_11_ad_hoc_result *resp =
1896 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1897 u8 preamble = RADIO_PREAMBLE_SHORT;
1898 int ret = 0;
1899 u16 capability;
1900
1901 lbs_deb_enter(LBS_DEB_CFG80211);
1902
1903 ret = lbs_set_radio(priv, preamble, 1);
1904 if (ret)
1905 goto out;
1906
1907 /*
1908 * Example CMD_802_11_AD_HOC_START command:
1909 *
1910 * command 2b 00 CMD_802_11_AD_HOC_START
1911 * size b1 00
1912 * sequence xx xx
1913 * result 00 00
1914 * ssid 54 45 53 54 00 00 00 00
1915 * 00 00 00 00 00 00 00 00
1916 * 00 00 00 00 00 00 00 00
1917 * 00 00 00 00 00 00 00 00
1918 * bss type 02
1919 * beacon period 64 00
1920 * dtim period 00
1921 * IE IBSS 06
1922 * IE IBSS len 02
1923 * IE IBSS atim 00 00
1924 * reserved 00 00 00 00
1925 * IE DS 03
1926 * IE DS len 01
1927 * IE DS channel 01
1928 * reserved 00 00 00 00
1929 * probe delay 00 00
1930 * capability 02 00
1931 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1932 * 0c 12 18 24 30 48 60 6c
1933 * padding 100 bytes
1934 */
1935 memset(&cmd, 0, sizeof(cmd));
1936 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1937 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1938 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1939 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1940 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1941 cmd.ibss.header.len = 2;
1942 cmd.ibss.atimwindow = 0;
1943 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1944 cmd.ds.header.len = 1;
1945 cmd.ds.channel = params->chandef.chan->hw_value;
1946 /* Only v8 and below support setting probe delay */
1947 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1948 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1949 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1950 capability = WLAN_CAPABILITY_IBSS;
1951 cmd.capability = cpu_to_le16(capability);
1952 lbs_add_rates(cmd.rates);
1953
1954
1955 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1956 if (ret)
1957 goto out;
1958
1959 /*
1960 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1961 *
1962 * response 2b 80
1963 * size 14 00
1964 * sequence xx xx
1965 * result 00 00
1966 * reserved 00
1967 * bssid 02 2b 7b 0f 86 0e
1968 */
1969 lbs_join_post(priv, params, resp->bssid, capability);
1970
1971 out:
1972 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1973 return ret;
1974 }
1975
1976
1977 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1978 struct cfg80211_ibss_params *params)
1979 {
1980 struct lbs_private *priv = wiphy_priv(wiphy);
1981 int ret = 0;
1982 struct cfg80211_bss *bss;
1983
1984 if (dev == priv->mesh_dev)
1985 return -EOPNOTSUPP;
1986
1987 lbs_deb_enter(LBS_DEB_CFG80211);
1988
1989 if (!params->chandef.chan) {
1990 ret = -ENOTSUPP;
1991 goto out;
1992 }
1993
1994 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1995 if (ret)
1996 goto out;
1997
1998 /* Search if someone is beaconing. This assumes that the
1999 * bss list is populated already */
2000 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2001 params->ssid, params->ssid_len,
2002 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
2003
2004 if (bss) {
2005 ret = lbs_ibss_join_existing(priv, params, bss);
2006 cfg80211_put_bss(wiphy, bss);
2007 } else
2008 ret = lbs_ibss_start_new(priv, params);
2009
2010
2011 out:
2012 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2013 return ret;
2014 }
2015
2016
2017 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2018 {
2019 struct lbs_private *priv = wiphy_priv(wiphy);
2020 struct cmd_ds_802_11_ad_hoc_stop cmd;
2021 int ret = 0;
2022
2023 if (dev == priv->mesh_dev)
2024 return -EOPNOTSUPP;
2025
2026 lbs_deb_enter(LBS_DEB_CFG80211);
2027
2028 memset(&cmd, 0, sizeof(cmd));
2029 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2030 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2031
2032 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2033 lbs_mac_event_disconnected(priv, true);
2034
2035 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2036 return ret;
2037 }
2038
2039
2040
2041
2042 /*
2043 * Initialization
2044 */
2045
2046 static struct cfg80211_ops lbs_cfg80211_ops = {
2047 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2048 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2049 .scan = lbs_cfg_scan,
2050 .connect = lbs_cfg_connect,
2051 .disconnect = lbs_cfg_disconnect,
2052 .add_key = lbs_cfg_add_key,
2053 .del_key = lbs_cfg_del_key,
2054 .set_default_key = lbs_cfg_set_default_key,
2055 .get_station = lbs_cfg_get_station,
2056 .change_virtual_intf = lbs_change_intf,
2057 .join_ibss = lbs_join_ibss,
2058 .leave_ibss = lbs_leave_ibss,
2059 };
2060
2061
2062 /*
2063 * At this time lbs_private *priv doesn't even exist, so we just allocate
2064 * memory and don't initialize the wiphy further. This is postponed until we
2065 * can talk to the firmware and happens at registration time in
2066 * lbs_cfg_wiphy_register().
2067 */
2068 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2069 {
2070 int ret = 0;
2071 struct wireless_dev *wdev;
2072
2073 lbs_deb_enter(LBS_DEB_CFG80211);
2074
2075 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2076 if (!wdev)
2077 return ERR_PTR(-ENOMEM);
2078
2079 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2080 if (!wdev->wiphy) {
2081 dev_err(dev, "cannot allocate wiphy\n");
2082 ret = -ENOMEM;
2083 goto err_wiphy_new;
2084 }
2085
2086 lbs_deb_leave(LBS_DEB_CFG80211);
2087 return wdev;
2088
2089 err_wiphy_new:
2090 kfree(wdev);
2091 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2092 return ERR_PTR(ret);
2093 }
2094
2095
2096 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2097 {
2098 struct region_code_mapping {
2099 const char *cn;
2100 int code;
2101 };
2102
2103 /* Section 5.17.2 */
2104 static const struct region_code_mapping regmap[] = {
2105 {"US ", 0x10}, /* US FCC */
2106 {"CA ", 0x20}, /* Canada */
2107 {"EU ", 0x30}, /* ETSI */
2108 {"ES ", 0x31}, /* Spain */
2109 {"FR ", 0x32}, /* France */
2110 {"JP ", 0x40}, /* Japan */
2111 };
2112 size_t i;
2113
2114 lbs_deb_enter(LBS_DEB_CFG80211);
2115
2116 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2117 if (regmap[i].code == priv->regioncode) {
2118 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2119 break;
2120 }
2121
2122 lbs_deb_leave(LBS_DEB_CFG80211);
2123 }
2124
2125 static void lbs_reg_notifier(struct wiphy *wiphy,
2126 struct regulatory_request *request)
2127 {
2128 struct lbs_private *priv = wiphy_priv(wiphy);
2129
2130 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2131 "callback for domain %c%c\n", request->alpha2[0],
2132 request->alpha2[1]);
2133
2134 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2135 if (lbs_iface_active(priv))
2136 lbs_set_11d_domain_info(priv);
2137
2138 lbs_deb_leave(LBS_DEB_CFG80211);
2139 }
2140
2141 /*
2142 * This function get's called after lbs_setup_firmware() determined the
2143 * firmware capabities. So we can setup the wiphy according to our
2144 * hardware/firmware.
2145 */
2146 int lbs_cfg_register(struct lbs_private *priv)
2147 {
2148 struct wireless_dev *wdev = priv->wdev;
2149 int ret;
2150
2151 lbs_deb_enter(LBS_DEB_CFG80211);
2152
2153 wdev->wiphy->max_scan_ssids = 1;
2154 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2155
2156 wdev->wiphy->interface_modes =
2157 BIT(NL80211_IFTYPE_STATION) |
2158 BIT(NL80211_IFTYPE_ADHOC);
2159 if (lbs_rtap_supported(priv))
2160 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2161 if (lbs_mesh_activated(priv))
2162 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2163
2164 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2165
2166 /*
2167 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2168 * never seen a firmware without WPA
2169 */
2170 wdev->wiphy->cipher_suites = cipher_suites;
2171 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2172 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2173
2174 ret = wiphy_register(wdev->wiphy);
2175 if (ret < 0)
2176 pr_err("cannot register wiphy device\n");
2177
2178 priv->wiphy_registered = true;
2179
2180 ret = register_netdev(priv->dev);
2181 if (ret)
2182 pr_err("cannot register network device\n");
2183
2184 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2185
2186 lbs_cfg_set_regulatory_hint(priv);
2187
2188 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2189 return ret;
2190 }
2191
2192 void lbs_scan_deinit(struct lbs_private *priv)
2193 {
2194 lbs_deb_enter(LBS_DEB_CFG80211);
2195 cancel_delayed_work_sync(&priv->scan_work);
2196 }
2197
2198
2199 void lbs_cfg_free(struct lbs_private *priv)
2200 {
2201 struct wireless_dev *wdev = priv->wdev;
2202
2203 lbs_deb_enter(LBS_DEB_CFG80211);
2204
2205 if (!wdev)
2206 return;
2207
2208 if (priv->wiphy_registered)
2209 wiphy_unregister(wdev->wiphy);
2210
2211 if (wdev->wiphy)
2212 wiphy_free(wdev->wiphy);
2213
2214 kfree(wdev);
2215 }
Linux with added FPC-III support