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Merge tag 'regmap-fix-v4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / net / wireless / marvell / libertas / cfg.c
blob7ff2efadcecadc2001f9aad585be526635cdcaaa
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 = NL80211_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 NL80211_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 struct cfg80211_scan_info info = {
803 .aborted = false,
804 };
805
806 cfg80211_scan_done(priv->scan_req, &info);
807 }
808
809 priv->scan_req = NULL;
810 }
811
812 static int lbs_cfg_scan(struct wiphy *wiphy,
813 struct cfg80211_scan_request *request)
814 {
815 struct lbs_private *priv = wiphy_priv(wiphy);
816 int ret = 0;
817
818 lbs_deb_enter(LBS_DEB_CFG80211);
819
820 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
821 /* old scan request not yet processed */
822 ret = -EAGAIN;
823 goto out;
824 }
825
826 _internal_start_scan(priv, false, request);
827
828 if (priv->surpriseremoved)
829 ret = -EIO;
830
831 out:
832 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
833 return ret;
834 }
835
836
837
838
839 /*
840 * Events
841 */
842
843 void lbs_send_disconnect_notification(struct lbs_private *priv,
844 bool locally_generated)
845 {
846 lbs_deb_enter(LBS_DEB_CFG80211);
847
848 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
849 GFP_KERNEL);
850
851 lbs_deb_leave(LBS_DEB_CFG80211);
852 }
853
854 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
855 {
856 lbs_deb_enter(LBS_DEB_CFG80211);
857
858 cfg80211_michael_mic_failure(priv->dev,
859 priv->assoc_bss,
860 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
861 NL80211_KEYTYPE_GROUP :
862 NL80211_KEYTYPE_PAIRWISE,
863 -1,
864 NULL,
865 GFP_KERNEL);
866
867 lbs_deb_leave(LBS_DEB_CFG80211);
868 }
869
870
871
872
873 /*
874 * Connect/disconnect
875 */
876
877
878 /*
879 * This removes all WEP keys
880 */
881 static int lbs_remove_wep_keys(struct lbs_private *priv)
882 {
883 struct cmd_ds_802_11_set_wep cmd;
884 int ret;
885
886 lbs_deb_enter(LBS_DEB_CFG80211);
887
888 memset(&cmd, 0, sizeof(cmd));
889 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
890 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
891 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
892
893 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
894
895 lbs_deb_leave(LBS_DEB_CFG80211);
896 return ret;
897 }
898
899 /*
900 * Set WEP keys
901 */
902 static int lbs_set_wep_keys(struct lbs_private *priv)
903 {
904 struct cmd_ds_802_11_set_wep cmd;
905 int i;
906 int ret;
907
908 lbs_deb_enter(LBS_DEB_CFG80211);
909
910 /*
911 * command 13 00
912 * size 50 00
913 * sequence xx xx
914 * result 00 00
915 * action 02 00 ACT_ADD
916 * transmit key 00 00
917 * type for key 1 01 WEP40
918 * type for key 2 00
919 * type for key 3 00
920 * type for key 4 00
921 * key 1 39 39 39 39 39 00 00 00
922 * 00 00 00 00 00 00 00 00
923 * key 2 00 00 00 00 00 00 00 00
924 * 00 00 00 00 00 00 00 00
925 * key 3 00 00 00 00 00 00 00 00
926 * 00 00 00 00 00 00 00 00
927 * key 4 00 00 00 00 00 00 00 00
928 */
929 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
930 priv->wep_key_len[2] || priv->wep_key_len[3]) {
931 /* Only set wep keys if we have at least one of them */
932 memset(&cmd, 0, sizeof(cmd));
933 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
934 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
935 cmd.action = cpu_to_le16(CMD_ACT_ADD);
936
937 for (i = 0; i < 4; i++) {
938 switch (priv->wep_key_len[i]) {
939 case WLAN_KEY_LEN_WEP40:
940 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
941 break;
942 case WLAN_KEY_LEN_WEP104:
943 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
944 break;
945 default:
946 cmd.keytype[i] = 0;
947 break;
948 }
949 memcpy(cmd.keymaterial[i], priv->wep_key[i],
950 priv->wep_key_len[i]);
951 }
952
953 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
954 } else {
955 /* Otherwise remove all wep keys */
956 ret = lbs_remove_wep_keys(priv);
957 }
958
959 lbs_deb_leave(LBS_DEB_CFG80211);
960 return ret;
961 }
962
963
964 /*
965 * Enable/Disable RSN status
966 */
967 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
968 {
969 struct cmd_ds_802_11_enable_rsn cmd;
970 int ret;
971
972 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
973
974 /*
975 * cmd 2f 00
976 * size 0c 00
977 * sequence xx xx
978 * result 00 00
979 * action 01 00 ACT_SET
980 * enable 01 00
981 */
982 memset(&cmd, 0, sizeof(cmd));
983 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
984 cmd.action = cpu_to_le16(CMD_ACT_SET);
985 cmd.enable = cpu_to_le16(enable);
986
987 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
988
989 lbs_deb_leave(LBS_DEB_CFG80211);
990 return ret;
991 }
992
993
994 /*
995 * Set WPA/WPA key material
996 */
997
998 /*
999 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
1000 * get rid of WEXT, this should go into host.h
1001 */
1002
1003 struct cmd_key_material {
1004 struct cmd_header hdr;
1005
1006 __le16 action;
1007 struct MrvlIEtype_keyParamSet param;
1008 } __packed;
1009
1010 static int lbs_set_key_material(struct lbs_private *priv,
1011 int key_type, int key_info,
1012 const u8 *key, u16 key_len)
1013 {
1014 struct cmd_key_material cmd;
1015 int ret;
1016
1017 lbs_deb_enter(LBS_DEB_CFG80211);
1018
1019 /*
1020 * Example for WPA (TKIP):
1021 *
1022 * cmd 5e 00
1023 * size 34 00
1024 * sequence xx xx
1025 * result 00 00
1026 * action 01 00
1027 * TLV type 00 01 key param
1028 * length 00 26
1029 * key type 01 00 TKIP
1030 * key info 06 00 UNICAST | ENABLED
1031 * key len 20 00
1032 * key 32 bytes
1033 */
1034 memset(&cmd, 0, sizeof(cmd));
1035 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1036 cmd.action = cpu_to_le16(CMD_ACT_SET);
1037 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1038 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1039 cmd.param.keytypeid = cpu_to_le16(key_type);
1040 cmd.param.keyinfo = cpu_to_le16(key_info);
1041 cmd.param.keylen = cpu_to_le16(key_len);
1042 if (key && key_len)
1043 memcpy(cmd.param.key, key, key_len);
1044
1045 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1046
1047 lbs_deb_leave(LBS_DEB_CFG80211);
1048 return ret;
1049 }
1050
1051
1052 /*
1053 * Sets the auth type (open, shared, etc) in the firmware. That
1054 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1055 * command doesn't send an authentication frame at all, it just
1056 * stores the auth_type.
1057 */
1058 static int lbs_set_authtype(struct lbs_private *priv,
1059 struct cfg80211_connect_params *sme)
1060 {
1061 struct cmd_ds_802_11_authenticate cmd;
1062 int ret;
1063
1064 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1065
1066 /*
1067 * cmd 11 00
1068 * size 19 00
1069 * sequence xx xx
1070 * result 00 00
1071 * BSS id 00 13 19 80 da 30
1072 * auth type 00
1073 * reserved 00 00 00 00 00 00 00 00 00 00
1074 */
1075 memset(&cmd, 0, sizeof(cmd));
1076 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1077 if (sme->bssid)
1078 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1079 /* convert auth_type */
1080 ret = lbs_auth_to_authtype(sme->auth_type);
1081 if (ret < 0)
1082 goto done;
1083
1084 cmd.authtype = ret;
1085 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1086
1087 done:
1088 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1089 return ret;
1090 }
1091
1092
1093 /*
1094 * Create association request
1095 */
1096 #define LBS_ASSOC_MAX_CMD_SIZE \
1097 (sizeof(struct cmd_ds_802_11_associate) \
1098 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1099 + LBS_MAX_SSID_TLV_SIZE \
1100 + LBS_MAX_CHANNEL_TLV_SIZE \
1101 + LBS_MAX_CF_PARAM_TLV_SIZE \
1102 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1103 + LBS_MAX_WPA_TLV_SIZE)
1104
1105 static int lbs_associate(struct lbs_private *priv,
1106 struct cfg80211_bss *bss,
1107 struct cfg80211_connect_params *sme)
1108 {
1109 struct cmd_ds_802_11_associate_response *resp;
1110 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1111 GFP_KERNEL);
1112 const u8 *ssid_eid;
1113 size_t len, resp_ie_len;
1114 int status;
1115 int ret;
1116 u8 *pos;
1117 u8 *tmp;
1118
1119 lbs_deb_enter(LBS_DEB_CFG80211);
1120
1121 if (!cmd) {
1122 ret = -ENOMEM;
1123 goto done;
1124 }
1125 pos = &cmd->iebuf[0];
1126
1127 /*
1128 * cmd 50 00
1129 * length 34 00
1130 * sequence xx xx
1131 * result 00 00
1132 * BSS id 00 13 19 80 da 30
1133 * capabilities 11 00
1134 * listen interval 0a 00
1135 * beacon interval 00 00
1136 * DTIM period 00
1137 * TLVs xx (up to 512 bytes)
1138 */
1139 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1140
1141 /* Fill in static fields */
1142 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1143 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1144 cmd->capability = cpu_to_le16(bss->capability);
1145
1146 /* add SSID TLV */
1147 rcu_read_lock();
1148 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1149 if (ssid_eid)
1150 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1151 else
1152 lbs_deb_assoc("no SSID\n");
1153 rcu_read_unlock();
1154
1155 /* add DS param TLV */
1156 if (bss->channel)
1157 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1158 else
1159 lbs_deb_assoc("no channel\n");
1160
1161 /* add (empty) CF param TLV */
1162 pos += lbs_add_cf_param_tlv(pos);
1163
1164 /* add rates TLV */
1165 tmp = pos + 4; /* skip Marvell IE header */
1166 pos += lbs_add_common_rates_tlv(pos, bss);
1167 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1168
1169 /* add auth type TLV */
1170 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1171 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1172
1173 /* add WPA/WPA2 TLV */
1174 if (sme->ie && sme->ie_len)
1175 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1176
1177 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1178 (u16)(pos - (u8 *) &cmd->iebuf);
1179 cmd->hdr.size = cpu_to_le16(len);
1180
1181 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1182 le16_to_cpu(cmd->hdr.size));
1183
1184 /* store for later use */
1185 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1186
1187 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1188 if (ret)
1189 goto done;
1190
1191 /* generate connect message to cfg80211 */
1192
1193 resp = (void *) cmd; /* recast for easier field access */
1194 status = le16_to_cpu(resp->statuscode);
1195
1196 /* Older FW versions map the IEEE 802.11 Status Code in the association
1197 * response to the following values returned in resp->statuscode:
1198 *
1199 * IEEE Status Code Marvell Status Code
1200 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1201 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1202 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1203 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1204 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1205 * others -> 0x0003 ASSOC_RESULT_REFUSED
1206 *
1207 * Other response codes:
1208 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1209 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1210 * association response from the AP)
1211 */
1212 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1213 switch (status) {
1214 case 0:
1215 break;
1216 case 1:
1217 lbs_deb_assoc("invalid association parameters\n");
1218 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1219 break;
1220 case 2:
1221 lbs_deb_assoc("timer expired while waiting for AP\n");
1222 status = WLAN_STATUS_AUTH_TIMEOUT;
1223 break;
1224 case 3:
1225 lbs_deb_assoc("association refused by AP\n");
1226 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1227 break;
1228 case 4:
1229 lbs_deb_assoc("authentication refused by AP\n");
1230 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1231 break;
1232 default:
1233 lbs_deb_assoc("association failure %d\n", status);
1234 /* v5 OLPC firmware does return the AP status code if
1235 * it's not one of the values above. Let that through.
1236 */
1237 break;
1238 }
1239 }
1240
1241 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1242 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1243 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1244
1245 resp_ie_len = le16_to_cpu(resp->hdr.size)
1246 - sizeof(resp->hdr)
1247 - 6;
1248 cfg80211_connect_result(priv->dev,
1249 priv->assoc_bss,
1250 sme->ie, sme->ie_len,
1251 resp->iebuf, resp_ie_len,
1252 status,
1253 GFP_KERNEL);
1254
1255 if (status == 0) {
1256 /* TODO: get rid of priv->connect_status */
1257 priv->connect_status = LBS_CONNECTED;
1258 netif_carrier_on(priv->dev);
1259 if (!priv->tx_pending_len)
1260 netif_tx_wake_all_queues(priv->dev);
1261 }
1262
1263 kfree(cmd);
1264 done:
1265 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1266 return ret;
1267 }
1268
1269 static struct cfg80211_scan_request *
1270 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1271 {
1272 struct cfg80211_scan_request *creq = NULL;
1273 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1274 enum nl80211_band band;
1275
1276 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1277 n_channels * sizeof(void *),
1278 GFP_ATOMIC);
1279 if (!creq)
1280 return NULL;
1281
1282 /* SSIDs come after channels */
1283 creq->ssids = (void *)&creq->channels[n_channels];
1284 creq->n_channels = n_channels;
1285 creq->n_ssids = 1;
1286
1287 /* Scan all available channels */
1288 i = 0;
1289 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1290 int j;
1291
1292 if (!wiphy->bands[band])
1293 continue;
1294
1295 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1296 /* ignore disabled channels */
1297 if (wiphy->bands[band]->channels[j].flags &
1298 IEEE80211_CHAN_DISABLED)
1299 continue;
1300
1301 creq->channels[i] = &wiphy->bands[band]->channels[j];
1302 i++;
1303 }
1304 }
1305 if (i) {
1306 /* Set real number of channels specified in creq->channels[] */
1307 creq->n_channels = i;
1308
1309 /* Scan for the SSID we're going to connect to */
1310 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1311 creq->ssids[0].ssid_len = sme->ssid_len;
1312 } else {
1313 /* No channels found... */
1314 kfree(creq);
1315 creq = NULL;
1316 }
1317
1318 return creq;
1319 }
1320
1321 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1322 struct cfg80211_connect_params *sme)
1323 {
1324 struct lbs_private *priv = wiphy_priv(wiphy);
1325 struct cfg80211_bss *bss = NULL;
1326 int ret = 0;
1327 u8 preamble = RADIO_PREAMBLE_SHORT;
1328
1329 if (dev == priv->mesh_dev)
1330 return -EOPNOTSUPP;
1331
1332 lbs_deb_enter(LBS_DEB_CFG80211);
1333
1334 if (!sme->bssid) {
1335 struct cfg80211_scan_request *creq;
1336
1337 /*
1338 * Scan for the requested network after waiting for existing
1339 * scans to finish.
1340 */
1341 lbs_deb_assoc("assoc: waiting for existing scans\n");
1342 wait_event_interruptible_timeout(priv->scan_q,
1343 (priv->scan_req == NULL),
1344 (15 * HZ));
1345
1346 creq = _new_connect_scan_req(wiphy, sme);
1347 if (!creq) {
1348 ret = -EINVAL;
1349 goto done;
1350 }
1351
1352 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1353 _internal_start_scan(priv, true, creq);
1354
1355 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1356 wait_event_interruptible_timeout(priv->scan_q,
1357 (priv->scan_req == NULL),
1358 (15 * HZ));
1359 lbs_deb_assoc("assoc: scanning completed\n");
1360 }
1361
1362 /* Find the BSS we want using available scan results */
1363 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1364 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1365 IEEE80211_PRIVACY_ANY);
1366 if (!bss) {
1367 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1368 sme->bssid);
1369 ret = -ENOENT;
1370 goto done;
1371 }
1372 lbs_deb_assoc("trying %pM\n", bss->bssid);
1373 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1374 sme->crypto.cipher_group,
1375 sme->key_idx, sme->key_len);
1376
1377 /* As this is a new connection, clear locally stored WEP keys */
1378 priv->wep_tx_key = 0;
1379 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1380 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1381
1382 /* set/remove WEP keys */
1383 switch (sme->crypto.cipher_group) {
1384 case WLAN_CIPHER_SUITE_WEP40:
1385 case WLAN_CIPHER_SUITE_WEP104:
1386 /* Store provided WEP keys in priv-> */
1387 priv->wep_tx_key = sme->key_idx;
1388 priv->wep_key_len[sme->key_idx] = sme->key_len;
1389 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1390 /* Set WEP keys and WEP mode */
1391 lbs_set_wep_keys(priv);
1392 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1393 lbs_set_mac_control(priv);
1394 /* No RSN mode for WEP */
1395 lbs_enable_rsn(priv, 0);
1396 break;
1397 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1398 /*
1399 * If we don't have no WEP, no WPA and no WPA2,
1400 * we remove all keys like in the WPA/WPA2 setup,
1401 * we just don't set RSN.
1402 *
1403 * Therefore: fall-through
1404 */
1405 case WLAN_CIPHER_SUITE_TKIP:
1406 case WLAN_CIPHER_SUITE_CCMP:
1407 /* Remove WEP keys and WEP mode */
1408 lbs_remove_wep_keys(priv);
1409 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1410 lbs_set_mac_control(priv);
1411
1412 /* clear the WPA/WPA2 keys */
1413 lbs_set_key_material(priv,
1414 KEY_TYPE_ID_WEP, /* doesn't matter */
1415 KEY_INFO_WPA_UNICAST,
1416 NULL, 0);
1417 lbs_set_key_material(priv,
1418 KEY_TYPE_ID_WEP, /* doesn't matter */
1419 KEY_INFO_WPA_MCAST,
1420 NULL, 0);
1421 /* RSN mode for WPA/WPA2 */
1422 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1423 break;
1424 default:
1425 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1426 sme->crypto.cipher_group);
1427 ret = -ENOTSUPP;
1428 goto done;
1429 }
1430
1431 ret = lbs_set_authtype(priv, sme);
1432 if (ret == -ENOTSUPP) {
1433 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1434 goto done;
1435 }
1436
1437 lbs_set_radio(priv, preamble, 1);
1438
1439 /* Do the actual association */
1440 ret = lbs_associate(priv, bss, sme);
1441
1442 done:
1443 if (bss)
1444 cfg80211_put_bss(wiphy, bss);
1445 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1446 return ret;
1447 }
1448
1449 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1450 {
1451 struct cmd_ds_802_11_deauthenticate cmd;
1452 int ret;
1453
1454 memset(&cmd, 0, sizeof(cmd));
1455 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1456 /* Mildly ugly to use a locally store my own BSSID ... */
1457 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1458 cmd.reasoncode = cpu_to_le16(reason);
1459
1460 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1461 if (ret)
1462 return ret;
1463
1464 cfg80211_disconnected(priv->dev,
1465 reason,
1466 NULL, 0, true,
1467 GFP_KERNEL);
1468 priv->connect_status = LBS_DISCONNECTED;
1469
1470 return 0;
1471 }
1472
1473 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1474 u16 reason_code)
1475 {
1476 struct lbs_private *priv = wiphy_priv(wiphy);
1477
1478 if (dev == priv->mesh_dev)
1479 return -EOPNOTSUPP;
1480
1481 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1482
1483 /* store for lbs_cfg_ret_disconnect() */
1484 priv->disassoc_reason = reason_code;
1485
1486 return lbs_disconnect(priv, reason_code);
1487 }
1488
1489 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1490 struct net_device *netdev,
1491 u8 key_index, bool unicast,
1492 bool multicast)
1493 {
1494 struct lbs_private *priv = wiphy_priv(wiphy);
1495
1496 if (netdev == priv->mesh_dev)
1497 return -EOPNOTSUPP;
1498
1499 lbs_deb_enter(LBS_DEB_CFG80211);
1500
1501 if (key_index != priv->wep_tx_key) {
1502 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1503 priv->wep_tx_key = key_index;
1504 lbs_set_wep_keys(priv);
1505 }
1506
1507 return 0;
1508 }
1509
1510
1511 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1512 u8 idx, bool pairwise, const u8 *mac_addr,
1513 struct key_params *params)
1514 {
1515 struct lbs_private *priv = wiphy_priv(wiphy);
1516 u16 key_info;
1517 u16 key_type;
1518 int ret = 0;
1519
1520 if (netdev == priv->mesh_dev)
1521 return -EOPNOTSUPP;
1522
1523 lbs_deb_enter(LBS_DEB_CFG80211);
1524
1525 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1526 params->cipher, mac_addr);
1527 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1528 idx, params->key_len);
1529 if (params->key_len)
1530 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1531 params->key, params->key_len);
1532
1533 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1534 if (params->seq_len)
1535 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1536 params->seq, params->seq_len);
1537
1538 switch (params->cipher) {
1539 case WLAN_CIPHER_SUITE_WEP40:
1540 case WLAN_CIPHER_SUITE_WEP104:
1541 /* actually compare if something has changed ... */
1542 if ((priv->wep_key_len[idx] != params->key_len) ||
1543 memcmp(priv->wep_key[idx],
1544 params->key, params->key_len) != 0) {
1545 priv->wep_key_len[idx] = params->key_len;
1546 memcpy(priv->wep_key[idx],
1547 params->key, params->key_len);
1548 lbs_set_wep_keys(priv);
1549 }
1550 break;
1551 case WLAN_CIPHER_SUITE_TKIP:
1552 case WLAN_CIPHER_SUITE_CCMP:
1553 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1554 ? KEY_INFO_WPA_UNICAST
1555 : KEY_INFO_WPA_MCAST);
1556 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1557 ? KEY_TYPE_ID_TKIP
1558 : KEY_TYPE_ID_AES;
1559 lbs_set_key_material(priv,
1560 key_type,
1561 key_info,
1562 params->key, params->key_len);
1563 break;
1564 default:
1565 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1566 ret = -ENOTSUPP;
1567 break;
1568 }
1569
1570 return ret;
1571 }
1572
1573
1574 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1575 u8 key_index, bool pairwise, const u8 *mac_addr)
1576 {
1577
1578 lbs_deb_enter(LBS_DEB_CFG80211);
1579
1580 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1581 key_index, mac_addr);
1582
1583 #ifdef TODO
1584 struct lbs_private *priv = wiphy_priv(wiphy);
1585 /*
1586 * I think can keep this a NO-OP, because:
1587
1588 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1589 * - neither "iw" nor "wpa_supplicant" won't call this during
1590 * an ongoing connection
1591 * - TODO: but I have to check if this is still true when
1592 * I set the AP to periodic re-keying
1593 * - we've not kzallec() something when we've added a key at
1594 * lbs_cfg_connect() or lbs_cfg_add_key().
1595 *
1596 * This causes lbs_cfg_del_key() only called at disconnect time,
1597 * where we'd just waste time deleting a key that is not going
1598 * to be used anyway.
1599 */
1600 if (key_index < 3 && priv->wep_key_len[key_index]) {
1601 priv->wep_key_len[key_index] = 0;
1602 lbs_set_wep_keys(priv);
1603 }
1604 #endif
1605
1606 return 0;
1607 }
1608
1609
1610 /*
1611 * Get station
1612 */
1613
1614 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1615 const u8 *mac, struct station_info *sinfo)
1616 {
1617 struct lbs_private *priv = wiphy_priv(wiphy);
1618 s8 signal, noise;
1619 int ret;
1620 size_t i;
1621
1622 lbs_deb_enter(LBS_DEB_CFG80211);
1623
1624 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1625 BIT(NL80211_STA_INFO_TX_PACKETS) |
1626 BIT(NL80211_STA_INFO_RX_BYTES) |
1627 BIT(NL80211_STA_INFO_RX_PACKETS);
1628 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1629 sinfo->tx_packets = priv->dev->stats.tx_packets;
1630 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1631 sinfo->rx_packets = priv->dev->stats.rx_packets;
1632
1633 /* Get current RSSI */
1634 ret = lbs_get_rssi(priv, &signal, &noise);
1635 if (ret == 0) {
1636 sinfo->signal = signal;
1637 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1638 }
1639
1640 /* Convert priv->cur_rate from hw_value to NL80211 value */
1641 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1642 if (priv->cur_rate == lbs_rates[i].hw_value) {
1643 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1644 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1645 break;
1646 }
1647 }
1648
1649 return 0;
1650 }
1651
1652
1653
1654
1655 /*
1656 * Change interface
1657 */
1658
1659 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1660 enum nl80211_iftype type, u32 *flags,
1661 struct vif_params *params)
1662 {
1663 struct lbs_private *priv = wiphy_priv(wiphy);
1664 int ret = 0;
1665
1666 if (dev == priv->mesh_dev)
1667 return -EOPNOTSUPP;
1668
1669 switch (type) {
1670 case NL80211_IFTYPE_MONITOR:
1671 case NL80211_IFTYPE_STATION:
1672 case NL80211_IFTYPE_ADHOC:
1673 break;
1674 default:
1675 return -EOPNOTSUPP;
1676 }
1677
1678 lbs_deb_enter(LBS_DEB_CFG80211);
1679
1680 if (priv->iface_running)
1681 ret = lbs_set_iface_type(priv, type);
1682
1683 if (!ret)
1684 priv->wdev->iftype = type;
1685
1686 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1687 return ret;
1688 }
1689
1690
1691
1692 /*
1693 * IBSS (Ad-Hoc)
1694 */
1695
1696 /*
1697 * The firmware needs the following bits masked out of the beacon-derived
1698 * capability field when associating/joining to a BSS:
1699 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1700 */
1701 #define CAPINFO_MASK (~(0xda00))
1702
1703
1704 static void lbs_join_post(struct lbs_private *priv,
1705 struct cfg80211_ibss_params *params,
1706 u8 *bssid, u16 capability)
1707 {
1708 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1709 2 + 4 + /* basic rates */
1710 2 + 1 + /* DS parameter */
1711 2 + 2 + /* atim */
1712 2 + 8]; /* extended rates */
1713 u8 *fake = fake_ie;
1714 struct cfg80211_bss *bss;
1715
1716 lbs_deb_enter(LBS_DEB_CFG80211);
1717
1718 /*
1719 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1720 * the real IE from the firmware. So we fabricate a fake IE based on
1721 * what the firmware actually sends (sniffed with wireshark).
1722 */
1723 /* Fake SSID IE */
1724 *fake++ = WLAN_EID_SSID;
1725 *fake++ = params->ssid_len;
1726 memcpy(fake, params->ssid, params->ssid_len);
1727 fake += params->ssid_len;
1728 /* Fake supported basic rates IE */
1729 *fake++ = WLAN_EID_SUPP_RATES;
1730 *fake++ = 4;
1731 *fake++ = 0x82;
1732 *fake++ = 0x84;
1733 *fake++ = 0x8b;
1734 *fake++ = 0x96;
1735 /* Fake DS channel IE */
1736 *fake++ = WLAN_EID_DS_PARAMS;
1737 *fake++ = 1;
1738 *fake++ = params->chandef.chan->hw_value;
1739 /* Fake IBSS params IE */
1740 *fake++ = WLAN_EID_IBSS_PARAMS;
1741 *fake++ = 2;
1742 *fake++ = 0; /* ATIM=0 */
1743 *fake++ = 0;
1744 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1745 * but I don't know how this could be checked */
1746 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1747 *fake++ = 8;
1748 *fake++ = 0x0c;
1749 *fake++ = 0x12;
1750 *fake++ = 0x18;
1751 *fake++ = 0x24;
1752 *fake++ = 0x30;
1753 *fake++ = 0x48;
1754 *fake++ = 0x60;
1755 *fake++ = 0x6c;
1756 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1757
1758 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1759 params->chandef.chan,
1760 CFG80211_BSS_FTYPE_UNKNOWN,
1761 bssid,
1762 0,
1763 capability,
1764 params->beacon_interval,
1765 fake_ie, fake - fake_ie,
1766 0, GFP_KERNEL);
1767 cfg80211_put_bss(priv->wdev->wiphy, bss);
1768
1769 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1770 priv->wdev->ssid_len = params->ssid_len;
1771
1772 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1773 GFP_KERNEL);
1774
1775 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1776 priv->connect_status = LBS_CONNECTED;
1777 netif_carrier_on(priv->dev);
1778 if (!priv->tx_pending_len)
1779 netif_wake_queue(priv->dev);
1780
1781 lbs_deb_leave(LBS_DEB_CFG80211);
1782 }
1783
1784 static int lbs_ibss_join_existing(struct lbs_private *priv,
1785 struct cfg80211_ibss_params *params,
1786 struct cfg80211_bss *bss)
1787 {
1788 const u8 *rates_eid;
1789 struct cmd_ds_802_11_ad_hoc_join cmd;
1790 u8 preamble = RADIO_PREAMBLE_SHORT;
1791 int ret = 0;
1792
1793 lbs_deb_enter(LBS_DEB_CFG80211);
1794
1795 /* TODO: set preamble based on scan result */
1796 ret = lbs_set_radio(priv, preamble, 1);
1797 if (ret)
1798 goto out;
1799
1800 /*
1801 * Example CMD_802_11_AD_HOC_JOIN command:
1802 *
1803 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1804 * size 65 00
1805 * sequence xx xx
1806 * result 00 00
1807 * bssid 02 27 27 97 2f 96
1808 * ssid 49 42 53 53 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 * type 02 CMD_BSS_TYPE_IBSS
1813 * beacon period 64 00
1814 * dtim period 00
1815 * timestamp 00 00 00 00 00 00 00 00
1816 * localtime 00 00 00 00 00 00 00 00
1817 * IE DS 03
1818 * IE DS len 01
1819 * IE DS channel 01
1820 * reserveed 00 00 00 00
1821 * IE IBSS 06
1822 * IE IBSS len 02
1823 * IE IBSS atim 00 00
1824 * reserved 00 00 00 00
1825 * capability 02 00
1826 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1827 * fail timeout ff 00
1828 * probe delay 00 00
1829 */
1830 memset(&cmd, 0, sizeof(cmd));
1831 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1832
1833 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1834 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1835 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1836 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1837 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1838 cmd.bss.ds.header.len = 1;
1839 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1840 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1841 cmd.bss.ibss.header.len = 2;
1842 cmd.bss.ibss.atimwindow = 0;
1843 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1844
1845 /* set rates to the intersection of our rates and the rates in the
1846 bss */
1847 rcu_read_lock();
1848 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1849 if (!rates_eid) {
1850 lbs_add_rates(cmd.bss.rates);
1851 } else {
1852 int hw, i;
1853 u8 rates_max = rates_eid[1];
1854 u8 *rates = cmd.bss.rates;
1855 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1856 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1857 for (i = 0; i < rates_max; i++) {
1858 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1859 u8 rate = rates_eid[i+2];
1860 if (rate == 0x02 || rate == 0x04 ||
1861 rate == 0x0b || rate == 0x16)
1862 rate |= 0x80;
1863 *rates++ = rate;
1864 }
1865 }
1866 }
1867 }
1868 rcu_read_unlock();
1869
1870 /* Only v8 and below support setting this */
1871 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1872 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1873 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1874 }
1875 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1876 if (ret)
1877 goto out;
1878
1879 /*
1880 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1881 *
1882 * response 2c 80
1883 * size 09 00
1884 * sequence xx xx
1885 * result 00 00
1886 * reserved 00
1887 */
1888 lbs_join_post(priv, params, bss->bssid, bss->capability);
1889
1890 out:
1891 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1892 return ret;
1893 }
1894
1895
1896
1897 static int lbs_ibss_start_new(struct lbs_private *priv,
1898 struct cfg80211_ibss_params *params)
1899 {
1900 struct cmd_ds_802_11_ad_hoc_start cmd;
1901 struct cmd_ds_802_11_ad_hoc_result *resp =
1902 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1903 u8 preamble = RADIO_PREAMBLE_SHORT;
1904 int ret = 0;
1905 u16 capability;
1906
1907 lbs_deb_enter(LBS_DEB_CFG80211);
1908
1909 ret = lbs_set_radio(priv, preamble, 1);
1910 if (ret)
1911 goto out;
1912
1913 /*
1914 * Example CMD_802_11_AD_HOC_START command:
1915 *
1916 * command 2b 00 CMD_802_11_AD_HOC_START
1917 * size b1 00
1918 * sequence xx xx
1919 * result 00 00
1920 * ssid 54 45 53 54 00 00 00 00
1921 * 00 00 00 00 00 00 00 00
1922 * 00 00 00 00 00 00 00 00
1923 * 00 00 00 00 00 00 00 00
1924 * bss type 02
1925 * beacon period 64 00
1926 * dtim period 00
1927 * IE IBSS 06
1928 * IE IBSS len 02
1929 * IE IBSS atim 00 00
1930 * reserved 00 00 00 00
1931 * IE DS 03
1932 * IE DS len 01
1933 * IE DS channel 01
1934 * reserved 00 00 00 00
1935 * probe delay 00 00
1936 * capability 02 00
1937 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1938 * 0c 12 18 24 30 48 60 6c
1939 * padding 100 bytes
1940 */
1941 memset(&cmd, 0, sizeof(cmd));
1942 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1943 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1944 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1945 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1946 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1947 cmd.ibss.header.len = 2;
1948 cmd.ibss.atimwindow = 0;
1949 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1950 cmd.ds.header.len = 1;
1951 cmd.ds.channel = params->chandef.chan->hw_value;
1952 /* Only v8 and below support setting probe delay */
1953 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1954 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1955 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1956 capability = WLAN_CAPABILITY_IBSS;
1957 cmd.capability = cpu_to_le16(capability);
1958 lbs_add_rates(cmd.rates);
1959
1960
1961 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1962 if (ret)
1963 goto out;
1964
1965 /*
1966 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1967 *
1968 * response 2b 80
1969 * size 14 00
1970 * sequence xx xx
1971 * result 00 00
1972 * reserved 00
1973 * bssid 02 2b 7b 0f 86 0e
1974 */
1975 lbs_join_post(priv, params, resp->bssid, capability);
1976
1977 out:
1978 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1979 return ret;
1980 }
1981
1982
1983 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1984 struct cfg80211_ibss_params *params)
1985 {
1986 struct lbs_private *priv = wiphy_priv(wiphy);
1987 int ret = 0;
1988 struct cfg80211_bss *bss;
1989
1990 if (dev == priv->mesh_dev)
1991 return -EOPNOTSUPP;
1992
1993 lbs_deb_enter(LBS_DEB_CFG80211);
1994
1995 if (!params->chandef.chan) {
1996 ret = -ENOTSUPP;
1997 goto out;
1998 }
1999
2000 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
2001 if (ret)
2002 goto out;
2003
2004 /* Search if someone is beaconing. This assumes that the
2005 * bss list is populated already */
2006 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2007 params->ssid, params->ssid_len,
2008 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
2009
2010 if (bss) {
2011 ret = lbs_ibss_join_existing(priv, params, bss);
2012 cfg80211_put_bss(wiphy, bss);
2013 } else
2014 ret = lbs_ibss_start_new(priv, params);
2015
2016
2017 out:
2018 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2019 return ret;
2020 }
2021
2022
2023 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2024 {
2025 struct lbs_private *priv = wiphy_priv(wiphy);
2026 struct cmd_ds_802_11_ad_hoc_stop cmd;
2027 int ret = 0;
2028
2029 if (dev == priv->mesh_dev)
2030 return -EOPNOTSUPP;
2031
2032 lbs_deb_enter(LBS_DEB_CFG80211);
2033
2034 memset(&cmd, 0, sizeof(cmd));
2035 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2036 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2037
2038 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2039 lbs_mac_event_disconnected(priv, true);
2040
2041 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2042 return ret;
2043 }
2044
2045
2046
2047 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2048 bool enabled, int timeout)
2049 {
2050 struct lbs_private *priv = wiphy_priv(wiphy);
2051
2052 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
2053 if (!enabled)
2054 return 0;
2055 else
2056 return -EINVAL;
2057 }
2058 /* firmware does not work well with too long latency with power saving
2059 * enabled, so do not enable it if there is only polling, no
2060 * interrupts (like in some sdio hosts which can only
2061 * poll for sdio irqs)
2062 */
2063 if (priv->is_polling) {
2064 if (!enabled)
2065 return 0;
2066 else
2067 return -EINVAL;
2068 }
2069 if (!enabled) {
2070 priv->psmode = LBS802_11POWERMODECAM;
2071 if (priv->psstate != PS_STATE_FULL_POWER)
2072 lbs_set_ps_mode(priv,
2073 PS_MODE_ACTION_EXIT_PS,
2074 true);
2075 return 0;
2076 }
2077 if (priv->psmode != LBS802_11POWERMODECAM)
2078 return 0;
2079 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2080 if (priv->connect_status == LBS_CONNECTED)
2081 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2082 return 0;
2083 }
2084
2085 /*
2086 * Initialization
2087 */
2088
2089 static struct cfg80211_ops lbs_cfg80211_ops = {
2090 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2091 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2092 .scan = lbs_cfg_scan,
2093 .connect = lbs_cfg_connect,
2094 .disconnect = lbs_cfg_disconnect,
2095 .add_key = lbs_cfg_add_key,
2096 .del_key = lbs_cfg_del_key,
2097 .set_default_key = lbs_cfg_set_default_key,
2098 .get_station = lbs_cfg_get_station,
2099 .change_virtual_intf = lbs_change_intf,
2100 .join_ibss = lbs_join_ibss,
2101 .leave_ibss = lbs_leave_ibss,
2102 .set_power_mgmt = lbs_set_power_mgmt,
2103 };
2104
2105
2106 /*
2107 * At this time lbs_private *priv doesn't even exist, so we just allocate
2108 * memory and don't initialize the wiphy further. This is postponed until we
2109 * can talk to the firmware and happens at registration time in
2110 * lbs_cfg_wiphy_register().
2111 */
2112 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2113 {
2114 int ret = 0;
2115 struct wireless_dev *wdev;
2116
2117 lbs_deb_enter(LBS_DEB_CFG80211);
2118
2119 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2120 if (!wdev)
2121 return ERR_PTR(-ENOMEM);
2122
2123 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2124 if (!wdev->wiphy) {
2125 dev_err(dev, "cannot allocate wiphy\n");
2126 ret = -ENOMEM;
2127 goto err_wiphy_new;
2128 }
2129
2130 lbs_deb_leave(LBS_DEB_CFG80211);
2131 return wdev;
2132
2133 err_wiphy_new:
2134 kfree(wdev);
2135 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2136 return ERR_PTR(ret);
2137 }
2138
2139
2140 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2141 {
2142 struct region_code_mapping {
2143 const char *cn;
2144 int code;
2145 };
2146
2147 /* Section 5.17.2 */
2148 static const struct region_code_mapping regmap[] = {
2149 {"US ", 0x10}, /* US FCC */
2150 {"CA ", 0x20}, /* Canada */
2151 {"EU ", 0x30}, /* ETSI */
2152 {"ES ", 0x31}, /* Spain */
2153 {"FR ", 0x32}, /* France */
2154 {"JP ", 0x40}, /* Japan */
2155 };
2156 size_t i;
2157
2158 lbs_deb_enter(LBS_DEB_CFG80211);
2159
2160 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2161 if (regmap[i].code == priv->regioncode) {
2162 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2163 break;
2164 }
2165
2166 lbs_deb_leave(LBS_DEB_CFG80211);
2167 }
2168
2169 static void lbs_reg_notifier(struct wiphy *wiphy,
2170 struct regulatory_request *request)
2171 {
2172 struct lbs_private *priv = wiphy_priv(wiphy);
2173
2174 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2175 "callback for domain %c%c\n", request->alpha2[0],
2176 request->alpha2[1]);
2177
2178 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2179 if (lbs_iface_active(priv))
2180 lbs_set_11d_domain_info(priv);
2181
2182 lbs_deb_leave(LBS_DEB_CFG80211);
2183 }
2184
2185 /*
2186 * This function get's called after lbs_setup_firmware() determined the
2187 * firmware capabities. So we can setup the wiphy according to our
2188 * hardware/firmware.
2189 */
2190 int lbs_cfg_register(struct lbs_private *priv)
2191 {
2192 struct wireless_dev *wdev = priv->wdev;
2193 int ret;
2194
2195 lbs_deb_enter(LBS_DEB_CFG80211);
2196
2197 wdev->wiphy->max_scan_ssids = 1;
2198 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2199
2200 wdev->wiphy->interface_modes =
2201 BIT(NL80211_IFTYPE_STATION) |
2202 BIT(NL80211_IFTYPE_ADHOC);
2203 if (lbs_rtap_supported(priv))
2204 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2205 if (lbs_mesh_activated(priv))
2206 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2207
2208 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2209
2210 /*
2211 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2212 * never seen a firmware without WPA
2213 */
2214 wdev->wiphy->cipher_suites = cipher_suites;
2215 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2216 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2217
2218 ret = wiphy_register(wdev->wiphy);
2219 if (ret < 0)
2220 pr_err("cannot register wiphy device\n");
2221
2222 priv->wiphy_registered = true;
2223
2224 ret = register_netdev(priv->dev);
2225 if (ret)
2226 pr_err("cannot register network device\n");
2227
2228 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2229
2230 lbs_cfg_set_regulatory_hint(priv);
2231
2232 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2233 return ret;
2234 }
2235
2236 void lbs_scan_deinit(struct lbs_private *priv)
2237 {
2238 lbs_deb_enter(LBS_DEB_CFG80211);
2239 cancel_delayed_work_sync(&priv->scan_work);
2240 }
2241
2242
2243 void lbs_cfg_free(struct lbs_private *priv)
2244 {
2245 struct wireless_dev *wdev = priv->wdev;
2246
2247 lbs_deb_enter(LBS_DEB_CFG80211);
2248
2249 if (!wdev)
2250 return;
2251
2252 if (priv->wiphy_registered)
2253 wiphy_unregister(wdev->wiphy);
2254
2255 if (wdev->wiphy)
2256 wiphy_free(wdev->wiphy);
2257
2258 kfree(wdev);
2259 }
Linux with added FPC-III support