?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / wireless / marvell / libertas / cfg.c
blob2e2c193716d96a9fd2a12ac18e3bd07e33206b79
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Implement cfg80211 ("iw") support.
4 *
5 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
6 * Holger Schurig <hs4233@mail.mn-solutions.de>
7 *
8 */
9
10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12 #include <linux/hardirq.h>
13 #include <linux/sched.h>
14 #include <linux/wait.h>
15 #include <linux/slab.h>
16 #include <linux/ieee80211.h>
17 #include <net/cfg80211.h>
18 #include <linux/unaligned.h>
19
20 #include "decl.h"
21 #include "cfg.h"
22 #include "cmd.h"
23 #include "mesh.h"
24
25
26 #define CHAN2G(_channel, _freq, _flags) { \
27 .band = NL80211_BAND_2GHZ, \
28 .center_freq = (_freq), \
29 .hw_value = (_channel), \
30 .flags = (_flags), \
31 .max_antenna_gain = 0, \
32 .max_power = 30, \
33 }
34
35 static struct ieee80211_channel lbs_2ghz_channels[] = {
36 CHAN2G(1, 2412, 0),
37 CHAN2G(2, 2417, 0),
38 CHAN2G(3, 2422, 0),
39 CHAN2G(4, 2427, 0),
40 CHAN2G(5, 2432, 0),
41 CHAN2G(6, 2437, 0),
42 CHAN2G(7, 2442, 0),
43 CHAN2G(8, 2447, 0),
44 CHAN2G(9, 2452, 0),
45 CHAN2G(10, 2457, 0),
46 CHAN2G(11, 2462, 0),
47 CHAN2G(12, 2467, 0),
48 CHAN2G(13, 2472, 0),
49 CHAN2G(14, 2484, 0),
50 };
51
52 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
53 .bitrate = (_rate), \
54 .hw_value = (_hw_value), \
55 .flags = (_flags), \
56 }
57
58
59 /* Table 6 in section 3.2.1.1 */
60 static struct ieee80211_rate lbs_rates[] = {
61 RATETAB_ENT(10, 0, 0),
62 RATETAB_ENT(20, 1, 0),
63 RATETAB_ENT(55, 2, 0),
64 RATETAB_ENT(110, 3, 0),
65 RATETAB_ENT(60, 9, 0),
66 RATETAB_ENT(90, 6, 0),
67 RATETAB_ENT(120, 7, 0),
68 RATETAB_ENT(180, 8, 0),
69 RATETAB_ENT(240, 9, 0),
70 RATETAB_ENT(360, 10, 0),
71 RATETAB_ENT(480, 11, 0),
72 RATETAB_ENT(540, 12, 0),
73 };
74
75 static struct ieee80211_supported_band lbs_band_2ghz = {
76 .channels = lbs_2ghz_channels,
77 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
78 .bitrates = lbs_rates,
79 .n_bitrates = ARRAY_SIZE(lbs_rates),
80 };
81
82
83 static const u32 cipher_suites[] = {
84 WLAN_CIPHER_SUITE_WEP40,
85 WLAN_CIPHER_SUITE_WEP104,
86 WLAN_CIPHER_SUITE_TKIP,
87 WLAN_CIPHER_SUITE_CCMP,
88 };
89
90 /* Time to stay on the channel */
91 #define LBS_DWELL_PASSIVE 100
92 #define LBS_DWELL_ACTIVE 40
93
94
95 /***************************************************************************
96 * Misc utility functions
97 *
98 * TLVs are Marvell specific. They are very similar to IEs, they have the
99 * same structure: type, length, data*. The only difference: for IEs, the
100 * type and length are u8, but for TLVs they're __le16.
101 */
102
103 /*
104 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
105 * in the firmware spec
106 */
107 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
108 {
109 int ret = -ENOTSUPP;
110
111 switch (auth_type) {
112 case NL80211_AUTHTYPE_OPEN_SYSTEM:
113 case NL80211_AUTHTYPE_SHARED_KEY:
114 ret = auth_type;
115 break;
116 case NL80211_AUTHTYPE_AUTOMATIC:
117 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
118 break;
119 case NL80211_AUTHTYPE_NETWORK_EAP:
120 ret = 0x80;
121 break;
122 default:
123 /* silence compiler */
124 break;
125 }
126 return ret;
127 }
128
129
130 /*
131 * Various firmware commands need the list of supported rates, but with
132 * the hight-bit set for basic rates
133 */
134 static int lbs_add_rates(u8 *rates)
135 {
136 size_t i;
137
138 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
139 u8 rate = lbs_rates[i].bitrate / 5;
140 if (rate == 0x02 || rate == 0x04 ||
141 rate == 0x0b || rate == 0x16)
142 rate |= 0x80;
143 rates[i] = rate;
144 }
145 return ARRAY_SIZE(lbs_rates);
146 }
147
148
149 /***************************************************************************
150 * TLV utility functions
151 *
152 * TLVs are Marvell specific. They are very similar to IEs, they have the
153 * same structure: type, length, data*. The only difference: for IEs, the
154 * type and length are u8, but for TLVs they're __le16.
155 */
156
157
158 /*
159 * Add ssid TLV
160 */
161 #define LBS_MAX_SSID_TLV_SIZE \
162 (sizeof(struct mrvl_ie_header) \
163 + IEEE80211_MAX_SSID_LEN)
164
165 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
166 {
167 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
168
169 /*
170 * TLV-ID SSID 00 00
171 * length 06 00
172 * ssid 4d 4e 54 45 53 54
173 */
174 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
175 ssid_tlv->header.len = cpu_to_le16(ssid_len);
176 memcpy(ssid_tlv->ssid, ssid, ssid_len);
177 return sizeof(ssid_tlv->header) + ssid_len;
178 }
179
180
181 /*
182 * Add channel list TLV (section 8.4.2)
183 *
184 * Actual channel data comes from priv->wdev->wiphy->channels.
185 */
186 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
187 (sizeof(struct mrvl_ie_header) \
188 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
189
190 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
191 int last_channel, int active_scan)
192 {
193 int chanscanparamsize = sizeof(struct chanscanparamset) *
194 (last_channel - priv->scan_channel);
195
196 struct mrvl_ie_header *header = (void *) tlv;
197
198 /*
199 * TLV-ID CHANLIST 01 01
200 * length 0e 00
201 * channel 00 01 00 00 00 64 00
202 * radio type 00
203 * channel 01
204 * scan type 00
205 * min scan time 00 00
206 * max scan time 64 00
207 * channel 2 00 02 00 00 00 64 00
208 *
209 */
210
211 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
212 header->len = cpu_to_le16(chanscanparamsize);
213 tlv += sizeof(struct mrvl_ie_header);
214
215 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
216 last_channel); */
217 memset(tlv, 0, chanscanparamsize);
218
219 while (priv->scan_channel < last_channel) {
220 struct chanscanparamset *param = (void *) tlv;
221
222 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
223 param->channumber =
224 priv->scan_req->channels[priv->scan_channel]->hw_value;
225 if (active_scan) {
226 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
227 } else {
228 param->chanscanmode.passivescan = 1;
229 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
230 }
231 tlv += sizeof(struct chanscanparamset);
232 priv->scan_channel++;
233 }
234 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
235 }
236
237
238 /*
239 * Add rates TLV
240 *
241 * The rates are in lbs_bg_rates[], but for the 802.11b
242 * rates the high bit is set. We add this TLV only because
243 * there's a firmware which otherwise doesn't report all
244 * APs in range.
245 */
246 #define LBS_MAX_RATES_TLV_SIZE \
247 (sizeof(struct mrvl_ie_header) \
248 + (ARRAY_SIZE(lbs_rates)))
249
250 /* Adds a TLV with all rates the hardware supports */
251 static int lbs_add_supported_rates_tlv(u8 *tlv)
252 {
253 size_t i;
254 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
255
256 /*
257 * TLV-ID RATES 01 00
258 * length 0e 00
259 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
260 */
261 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
262 tlv += sizeof(rate_tlv->header);
263 i = lbs_add_rates(tlv);
264 tlv += i;
265 rate_tlv->header.len = cpu_to_le16(i);
266 return sizeof(rate_tlv->header) + i;
267 }
268
269 /* Add common rates from a TLV and return the new end of the TLV */
270 static u8 *
271 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
272 {
273 int hw, ap, ap_max = ie[1];
274 u8 hw_rate;
275
276 if (ap_max > MAX_RATES) {
277 lbs_deb_assoc("invalid rates\n");
278 return tlv;
279 }
280 /* Advance past IE header */
281 ie += 2;
282
283 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
284
285 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
286 hw_rate = lbs_rates[hw].bitrate / 5;
287 for (ap = 0; ap < ap_max; ap++) {
288 if (hw_rate == (ie[ap] & 0x7f)) {
289 *tlv++ = ie[ap];
290 *nrates = *nrates + 1;
291 }
292 }
293 }
294 return tlv;
295 }
296
297 /*
298 * Adds a TLV with all rates the hardware *and* BSS supports.
299 */
300 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
301 {
302 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
303 const u8 *rates_eid, *ext_rates_eid;
304 int n = 0;
305
306 rcu_read_lock();
307 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
308 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
309
310 /*
311 * 01 00 TLV_TYPE_RATES
312 * 04 00 len
313 * 82 84 8b 96 rates
314 */
315 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
316 tlv += sizeof(rate_tlv->header);
317
318 /* Add basic rates */
319 if (rates_eid) {
320 tlv = add_ie_rates(tlv, rates_eid, &n);
321
322 /* Add extended rates, if any */
323 if (ext_rates_eid)
324 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
325 } else {
326 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
327 /* Fallback: add basic 802.11b rates */
328 *tlv++ = 0x82;
329 *tlv++ = 0x84;
330 *tlv++ = 0x8b;
331 *tlv++ = 0x96;
332 n = 4;
333 }
334 rcu_read_unlock();
335
336 rate_tlv->header.len = cpu_to_le16(n);
337 return sizeof(rate_tlv->header) + n;
338 }
339
340
341 /*
342 * Add auth type TLV.
343 *
344 * This is only needed for newer firmware (V9 and up).
345 */
346 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
347 sizeof(struct mrvl_ie_auth_type)
348
349 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
350 {
351 struct mrvl_ie_auth_type *auth = (void *) tlv;
352
353 /*
354 * 1f 01 TLV_TYPE_AUTH_TYPE
355 * 01 00 len
356 * 01 auth type
357 */
358 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
359 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
360 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
361 return sizeof(*auth);
362 }
363
364
365 /*
366 * Add channel (phy ds) TLV
367 */
368 #define LBS_MAX_CHANNEL_TLV_SIZE \
369 sizeof(struct mrvl_ie_header)
370
371 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
372 {
373 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
374
375 /*
376 * 03 00 TLV_TYPE_PHY_DS
377 * 01 00 len
378 * 06 channel
379 */
380 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
381 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
382 ds->channel = channel;
383 return sizeof(*ds);
384 }
385
386
387 /*
388 * Add (empty) CF param TLV of the form:
389 */
390 #define LBS_MAX_CF_PARAM_TLV_SIZE \
391 sizeof(struct mrvl_ie_header)
392
393 static int lbs_add_cf_param_tlv(u8 *tlv)
394 {
395 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
396
397 /*
398 * 04 00 TLV_TYPE_CF
399 * 06 00 len
400 * 00 cfpcnt
401 * 00 cfpperiod
402 * 00 00 cfpmaxduration
403 * 00 00 cfpdurationremaining
404 */
405 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
406 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
407 return sizeof(*cf);
408 }
409
410 /*
411 * Add WPA TLV
412 */
413 #define LBS_MAX_WPA_TLV_SIZE \
414 (sizeof(struct mrvl_ie_header) \
415 + 128 /* TODO: I guessed the size */)
416
417 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
418 {
419 struct mrvl_ie_data *wpatlv = (struct mrvl_ie_data *)tlv;
420 const struct element *wpaie;
421
422 /* Find the first RSN or WPA IE to use */
423 wpaie = cfg80211_find_elem(WLAN_EID_RSN, ie, ie_len);
424 if (!wpaie)
425 wpaie = cfg80211_find_vendor_elem(WLAN_OUI_MICROSOFT,
426 WLAN_OUI_TYPE_MICROSOFT_WPA,
427 ie, ie_len);
428 if (!wpaie || wpaie->datalen > 128)
429 return 0;
430
431 /*
432 * Convert the found IE to a TLV. IEs use u8 for the header,
433 * u8 type
434 * u8 len
435 * u8[] data
436 * but TLVs use __le16 instead:
437 * __le16 type
438 * __le16 len
439 * u8[] data
440 */
441 wpatlv->header.type = cpu_to_le16(wpaie->id);
442 wpatlv->header.len = cpu_to_le16(wpaie->datalen);
443 memcpy(wpatlv->data, wpaie->data, wpaie->datalen);
444
445 /* Return the total number of bytes added to the TLV buffer */
446 return sizeof(struct mrvl_ie_header) + wpaie->datalen;
447 }
448
449 /* Add WPS enrollee TLV
450 */
451 #define LBS_MAX_WPS_ENROLLEE_TLV_SIZE \
452 (sizeof(struct mrvl_ie_header) \
453 + 256)
454
455 static int lbs_add_wps_enrollee_tlv(u8 *tlv, const u8 *ie, size_t ie_len)
456 {
457 struct mrvl_ie_data *wpstlv = (struct mrvl_ie_data *)tlv;
458 const struct element *wpsie;
459
460 /* Look for a WPS IE and add it to the probe request */
461 wpsie = cfg80211_find_vendor_elem(WLAN_OUI_MICROSOFT,
462 WLAN_OUI_TYPE_MICROSOFT_WPS,
463 ie, ie_len);
464 if (!wpsie)
465 return 0;
466
467 /* Convert the WPS IE to a TLV. The IE looks like this:
468 * u8 type (WLAN_EID_VENDOR_SPECIFIC)
469 * u8 len
470 * u8[] data
471 * but the TLV will look like this instead:
472 * __le16 type (TLV_TYPE_WPS_ENROLLEE)
473 * __le16 len
474 * u8[] data
475 */
476 wpstlv->header.type = cpu_to_le16(TLV_TYPE_WPS_ENROLLEE);
477 wpstlv->header.len = cpu_to_le16(wpsie->datalen);
478 memcpy(wpstlv->data, wpsie->data, wpsie->datalen);
479
480 /* Return the total number of bytes added to the TLV buffer */
481 return sizeof(struct mrvl_ie_header) + wpsie->datalen;
482 }
483
484 /*
485 * Set Channel
486 */
487
488 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
489 struct net_device *dev,
490 struct cfg80211_chan_def *chandef)
491 {
492 struct lbs_private *priv = wiphy_priv(wiphy);
493 int ret = -ENOTSUPP;
494
495 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
496 goto out;
497
498 ret = lbs_set_channel(priv, chandef->chan->hw_value);
499
500 out:
501 return ret;
502 }
503
504 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
505 struct net_device *netdev,
506 struct ieee80211_channel *channel)
507 {
508 struct lbs_private *priv = wiphy_priv(wiphy);
509 int ret = -ENOTSUPP;
510
511 if (netdev != priv->mesh_dev)
512 goto out;
513
514 ret = lbs_mesh_set_channel(priv, channel->hw_value);
515
516 out:
517 return ret;
518 }
519
520
521
522 /*
523 * Scanning
524 */
525
526 /*
527 * When scanning, the firmware doesn't send a nul packet with the power-safe
528 * bit to the AP. So we cannot stay away from our current channel too long,
529 * otherwise we loose data. So take a "nap" while scanning every other
530 * while.
531 */
532 #define LBS_SCAN_BEFORE_NAP 4
533
534
535 /*
536 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
537 * which isn't really an RSSI, as it becomes larger when moving away from
538 * the AP. Anyway, we need to convert that into mBm.
539 */
540 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
541 ((-(int)rssi + 3)*100)
542
543 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
544 struct cmd_header *resp)
545 {
546 struct cfg80211_bss *bss;
547 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
548 int bsssize;
549 const u8 *pos;
550 const u8 *tsfdesc;
551 int tsfsize;
552 int i;
553 int ret = -EILSEQ;
554
555 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
556
557 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
558 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
559
560 if (scanresp->nr_sets == 0) {
561 ret = 0;
562 goto done;
563 }
564
565 /*
566 * The general layout of the scan response is described in chapter
567 * 5.7.1. Basically we have a common part, then any number of BSS
568 * descriptor sections. Finally we have section with the same number
569 * of TSFs.
570 *
571 * cmd_ds_802_11_scan_rsp
572 * cmd_header
573 * pos_size
574 * nr_sets
575 * bssdesc 1
576 * bssid
577 * rssi
578 * timestamp
579 * intvl
580 * capa
581 * IEs
582 * bssdesc 2
583 * bssdesc n
584 * MrvlIEtypes_TsfFimestamp_t
585 * TSF for BSS 1
586 * TSF for BSS 2
587 * TSF for BSS n
588 */
589
590 pos = scanresp->bssdesc_and_tlvbuffer;
591
592 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
593 bsssize);
594
595 tsfdesc = pos + bsssize;
596 tsfsize = 4 + 8 * scanresp->nr_sets;
597 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
598
599 /* Validity check: we expect a Marvell-Local TLV */
600 i = get_unaligned_le16(tsfdesc);
601 tsfdesc += 2;
602 if (i != TLV_TYPE_TSFTIMESTAMP) {
603 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
604 goto done;
605 }
606
607 /*
608 * Validity check: the TLV holds TSF values with 8 bytes each, so
609 * the size in the TLV must match the nr_sets value
610 */
611 i = get_unaligned_le16(tsfdesc);
612 tsfdesc += 2;
613 if (i / 8 != scanresp->nr_sets) {
614 lbs_deb_scan("scan response: invalid number of TSF timestamp "
615 "sets (expected %d got %d)\n", scanresp->nr_sets,
616 i / 8);
617 goto done;
618 }
619
620 for (i = 0; i < scanresp->nr_sets; i++) {
621 const u8 *bssid;
622 const u8 *ie;
623 int left;
624 int ielen;
625 int rssi;
626 u16 intvl;
627 u16 capa;
628 int chan_no = -1;
629 const u8 *ssid = NULL;
630 u8 ssid_len = 0;
631
632 int len = get_unaligned_le16(pos);
633 pos += 2;
634
635 /* BSSID */
636 bssid = pos;
637 pos += ETH_ALEN;
638 /* RSSI */
639 rssi = *pos++;
640 /* Packet time stamp */
641 pos += 8;
642 /* Beacon interval */
643 intvl = get_unaligned_le16(pos);
644 pos += 2;
645 /* Capabilities */
646 capa = get_unaligned_le16(pos);
647 pos += 2;
648
649 /* To find out the channel, we must parse the IEs */
650 ie = pos;
651 /*
652 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
653 * interval, capabilities
654 */
655 ielen = left = len - (6 + 1 + 8 + 2 + 2);
656 while (left >= 2) {
657 u8 id, elen;
658 id = *pos++;
659 elen = *pos++;
660 left -= 2;
661 if (elen > left) {
662 lbs_deb_scan("scan response: invalid IE fmt\n");
663 goto done;
664 }
665
666 if (id == WLAN_EID_DS_PARAMS)
667 chan_no = *pos;
668 if (id == WLAN_EID_SSID) {
669 ssid = pos;
670 ssid_len = elen;
671 }
672 left -= elen;
673 pos += elen;
674 }
675
676 /* No channel, no luck */
677 if (chan_no != -1) {
678 struct wiphy *wiphy = priv->wdev->wiphy;
679 int freq = ieee80211_channel_to_frequency(chan_no,
680 NL80211_BAND_2GHZ);
681 struct ieee80211_channel *channel =
682 ieee80211_get_channel(wiphy, freq);
683
684 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
685 bssid, capa, chan_no, ssid_len, ssid,
686 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
687
688 if (channel &&
689 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
690 bss = cfg80211_inform_bss(wiphy, channel,
691 CFG80211_BSS_FTYPE_UNKNOWN,
692 bssid, get_unaligned_le64(tsfdesc),
693 capa, intvl, ie, ielen,
694 LBS_SCAN_RSSI_TO_MBM(rssi),
695 GFP_KERNEL);
696 cfg80211_put_bss(wiphy, bss);
697 }
698 } else
699 lbs_deb_scan("scan response: missing BSS channel IE\n");
700
701 tsfdesc += 8;
702 }
703 ret = 0;
704
705 done:
706 return ret;
707 }
708
709
710 /*
711 * Our scan command contains a TLV, consisting of a SSID TLV, a channel list
712 * TLV, a rates TLV, and an optional WPS IE. Determine the maximum size of them:
713 */
714 #define LBS_SCAN_MAX_CMD_SIZE \
715 (sizeof(struct cmd_ds_802_11_scan) \
716 + LBS_MAX_SSID_TLV_SIZE \
717 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
718 + LBS_MAX_RATES_TLV_SIZE \
719 + LBS_MAX_WPS_ENROLLEE_TLV_SIZE)
720
721 /*
722 * Assumes priv->scan_req is initialized and valid
723 * Assumes priv->scan_channel is initialized
724 */
725 static void lbs_scan_worker(struct work_struct *work)
726 {
727 struct lbs_private *priv =
728 container_of(work, struct lbs_private, scan_work.work);
729 struct cmd_ds_802_11_scan *scan_cmd;
730 u8 *tlv; /* pointer into our current, growing TLV storage area */
731 int last_channel;
732 int running, carrier;
733
734 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
735 if (scan_cmd == NULL)
736 return;
737
738 /* prepare fixed part of scan command */
739 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
740
741 /* stop network while we're away from our main channel */
742 running = !netif_queue_stopped(priv->dev);
743 carrier = netif_carrier_ok(priv->dev);
744 if (running)
745 netif_stop_queue(priv->dev);
746 if (carrier)
747 netif_carrier_off(priv->dev);
748
749 /* prepare fixed part of scan command */
750 tlv = scan_cmd->tlvbuffer;
751
752 /* add SSID TLV */
753 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
754 tlv += lbs_add_ssid_tlv(tlv,
755 priv->scan_req->ssids[0].ssid,
756 priv->scan_req->ssids[0].ssid_len);
757
758 /* add channel TLVs */
759 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
760 if (last_channel > priv->scan_req->n_channels)
761 last_channel = priv->scan_req->n_channels;
762 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
763 priv->scan_req->n_ssids);
764
765 /* add rates TLV */
766 tlv += lbs_add_supported_rates_tlv(tlv);
767
768 /* add optional WPS enrollee TLV */
769 if (priv->scan_req->ie && priv->scan_req->ie_len)
770 tlv += lbs_add_wps_enrollee_tlv(tlv, priv->scan_req->ie,
771 priv->scan_req->ie_len);
772
773 if (priv->scan_channel < priv->scan_req->n_channels) {
774 cancel_delayed_work(&priv->scan_work);
775 if (netif_running(priv->dev))
776 queue_delayed_work(priv->work_thread, &priv->scan_work,
777 msecs_to_jiffies(300));
778 }
779
780 /* This is the final data we are about to send */
781 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
782 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
783 sizeof(*scan_cmd));
784 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
785 tlv - scan_cmd->tlvbuffer);
786
787 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
788 le16_to_cpu(scan_cmd->hdr.size),
789 lbs_ret_scan, 0);
790
791 if (priv->scan_channel >= priv->scan_req->n_channels) {
792 /* Mark scan done */
793 cancel_delayed_work(&priv->scan_work);
794 lbs_scan_done(priv);
795 }
796
797 /* Restart network */
798 if (carrier)
799 netif_carrier_on(priv->dev);
800 if (running && !priv->tx_pending_len)
801 netif_wake_queue(priv->dev);
802
803 kfree(scan_cmd);
804
805 /* Wake up anything waiting on scan completion */
806 if (priv->scan_req == NULL) {
807 lbs_deb_scan("scan: waking up waiters\n");
808 wake_up_all(&priv->scan_q);
809 }
810 }
811
812 static void _internal_start_scan(struct lbs_private *priv, bool internal,
813 struct cfg80211_scan_request *request)
814 {
815 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
816 request->n_ssids, request->n_channels, request->ie_len);
817
818 priv->scan_channel = 0;
819 priv->scan_req = request;
820 priv->internal_scan = internal;
821
822 queue_delayed_work(priv->work_thread, &priv->scan_work,
823 msecs_to_jiffies(50));
824 }
825
826 /*
827 * Clean up priv->scan_req. Should be used to handle the allocation details.
828 */
829 void lbs_scan_done(struct lbs_private *priv)
830 {
831 WARN_ON(!priv->scan_req);
832
833 if (priv->internal_scan) {
834 kfree(priv->scan_req);
835 } else {
836 struct cfg80211_scan_info info = {
837 .aborted = false,
838 };
839
840 cfg80211_scan_done(priv->scan_req, &info);
841 }
842
843 priv->scan_req = NULL;
844 }
845
846 static int lbs_cfg_scan(struct wiphy *wiphy,
847 struct cfg80211_scan_request *request)
848 {
849 struct lbs_private *priv = wiphy_priv(wiphy);
850 int ret = 0;
851
852 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
853 /* old scan request not yet processed */
854 ret = -EAGAIN;
855 goto out;
856 }
857
858 _internal_start_scan(priv, false, request);
859
860 if (priv->surpriseremoved)
861 ret = -EIO;
862
863 out:
864 return ret;
865 }
866
867
868
869
870 /*
871 * Events
872 */
873
874 void lbs_send_disconnect_notification(struct lbs_private *priv,
875 bool locally_generated)
876 {
877 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
878 GFP_KERNEL);
879 }
880
881 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
882 {
883 cfg80211_michael_mic_failure(priv->dev,
884 priv->assoc_bss,
885 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
886 NL80211_KEYTYPE_GROUP :
887 NL80211_KEYTYPE_PAIRWISE,
888 -1,
889 NULL,
890 GFP_KERNEL);
891 }
892
893
894
895
896 /*
897 * Connect/disconnect
898 */
899
900
901 /*
902 * This removes all WEP keys
903 */
904 static int lbs_remove_wep_keys(struct lbs_private *priv)
905 {
906 struct cmd_ds_802_11_set_wep cmd;
907 int ret;
908
909 memset(&cmd, 0, sizeof(cmd));
910 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
911 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
912 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
913
914 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
915
916 return ret;
917 }
918
919 /*
920 * Set WEP keys
921 */
922 static int lbs_set_wep_keys(struct lbs_private *priv)
923 {
924 struct cmd_ds_802_11_set_wep cmd;
925 int i;
926 int ret;
927
928 /*
929 * command 13 00
930 * size 50 00
931 * sequence xx xx
932 * result 00 00
933 * action 02 00 ACT_ADD
934 * transmit key 00 00
935 * type for key 1 01 WEP40
936 * type for key 2 00
937 * type for key 3 00
938 * type for key 4 00
939 * key 1 39 39 39 39 39 00 00 00
940 * 00 00 00 00 00 00 00 00
941 * key 2 00 00 00 00 00 00 00 00
942 * 00 00 00 00 00 00 00 00
943 * key 3 00 00 00 00 00 00 00 00
944 * 00 00 00 00 00 00 00 00
945 * key 4 00 00 00 00 00 00 00 00
946 */
947 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
948 priv->wep_key_len[2] || priv->wep_key_len[3]) {
949 /* Only set wep keys if we have at least one of them */
950 memset(&cmd, 0, sizeof(cmd));
951 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
952 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
953 cmd.action = cpu_to_le16(CMD_ACT_ADD);
954
955 for (i = 0; i < 4; i++) {
956 switch (priv->wep_key_len[i]) {
957 case WLAN_KEY_LEN_WEP40:
958 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
959 break;
960 case WLAN_KEY_LEN_WEP104:
961 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
962 break;
963 default:
964 cmd.keytype[i] = 0;
965 break;
966 }
967 memcpy(cmd.keymaterial[i], priv->wep_key[i],
968 priv->wep_key_len[i]);
969 }
970
971 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
972 } else {
973 /* Otherwise remove all wep keys */
974 ret = lbs_remove_wep_keys(priv);
975 }
976
977 return ret;
978 }
979
980
981 /*
982 * Enable/Disable RSN status
983 */
984 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
985 {
986 struct cmd_ds_802_11_enable_rsn cmd;
987 int ret;
988
989 /*
990 * cmd 2f 00
991 * size 0c 00
992 * sequence xx xx
993 * result 00 00
994 * action 01 00 ACT_SET
995 * enable 01 00
996 */
997 memset(&cmd, 0, sizeof(cmd));
998 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
999 cmd.action = cpu_to_le16(CMD_ACT_SET);
1000 cmd.enable = cpu_to_le16(enable);
1001
1002 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
1003
1004 return ret;
1005 }
1006
1007
1008 /*
1009 * Set WPA/WPA key material
1010 */
1011
1012 /*
1013 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
1014 * get rid of WEXT, this should go into host.h
1015 */
1016
1017 struct cmd_key_material {
1018 struct cmd_header hdr;
1019
1020 __le16 action;
1021 struct MrvlIEtype_keyParamSet param;
1022 } __packed;
1023
1024 static int lbs_set_key_material(struct lbs_private *priv,
1025 int key_type, int key_info,
1026 const u8 *key, u16 key_len)
1027 {
1028 struct cmd_key_material cmd;
1029 int ret;
1030
1031 /*
1032 * Example for WPA (TKIP):
1033 *
1034 * cmd 5e 00
1035 * size 34 00
1036 * sequence xx xx
1037 * result 00 00
1038 * action 01 00
1039 * TLV type 00 01 key param
1040 * length 00 26
1041 * key type 01 00 TKIP
1042 * key info 06 00 UNICAST | ENABLED
1043 * key len 20 00
1044 * key 32 bytes
1045 */
1046 memset(&cmd, 0, sizeof(cmd));
1047 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1048 cmd.action = cpu_to_le16(CMD_ACT_SET);
1049 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1050 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1051 cmd.param.keytypeid = cpu_to_le16(key_type);
1052 cmd.param.keyinfo = cpu_to_le16(key_info);
1053 cmd.param.keylen = cpu_to_le16(key_len);
1054 if (key && key_len)
1055 memcpy(cmd.param.key, key, key_len);
1056
1057 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1058
1059 return ret;
1060 }
1061
1062
1063 /*
1064 * Sets the auth type (open, shared, etc) in the firmware. That
1065 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1066 * command doesn't send an authentication frame at all, it just
1067 * stores the auth_type.
1068 */
1069 static int lbs_set_authtype(struct lbs_private *priv,
1070 struct cfg80211_connect_params *sme)
1071 {
1072 struct cmd_ds_802_11_authenticate cmd;
1073 int ret;
1074
1075 /*
1076 * cmd 11 00
1077 * size 19 00
1078 * sequence xx xx
1079 * result 00 00
1080 * BSS id 00 13 19 80 da 30
1081 * auth type 00
1082 * reserved 00 00 00 00 00 00 00 00 00 00
1083 */
1084 memset(&cmd, 0, sizeof(cmd));
1085 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1086 if (sme->bssid)
1087 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1088 /* convert auth_type */
1089 ret = lbs_auth_to_authtype(sme->auth_type);
1090 if (ret < 0)
1091 goto done;
1092
1093 cmd.authtype = ret;
1094 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1095
1096 done:
1097 return ret;
1098 }
1099
1100
1101 /*
1102 * Create association request
1103 */
1104 #define LBS_ASSOC_MAX_CMD_SIZE \
1105 (sizeof(struct cmd_ds_802_11_associate) \
1106 + LBS_MAX_SSID_TLV_SIZE \
1107 + LBS_MAX_CHANNEL_TLV_SIZE \
1108 + LBS_MAX_CF_PARAM_TLV_SIZE \
1109 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1110 + LBS_MAX_WPA_TLV_SIZE)
1111
1112 static int lbs_associate(struct lbs_private *priv,
1113 struct cfg80211_bss *bss,
1114 struct cfg80211_connect_params *sme)
1115 {
1116 struct cmd_ds_802_11_associate_response *resp;
1117 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1118 GFP_KERNEL);
1119 const u8 *ssid_eid;
1120 size_t len, resp_ie_len;
1121 int status;
1122 int ret;
1123 u8 *pos;
1124 u8 *tmp;
1125
1126 if (!cmd) {
1127 ret = -ENOMEM;
1128 goto done;
1129 }
1130 pos = &cmd->iebuf[0];
1131
1132 /*
1133 * cmd 50 00
1134 * length 34 00
1135 * sequence xx xx
1136 * result 00 00
1137 * BSS id 00 13 19 80 da 30
1138 * capabilities 11 00
1139 * listen interval 0a 00
1140 * beacon interval 00 00
1141 * DTIM period 00
1142 * TLVs xx (up to 512 bytes)
1143 */
1144 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1145
1146 /* Fill in static fields */
1147 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1148 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1149 cmd->capability = cpu_to_le16(bss->capability);
1150
1151 /* add SSID TLV */
1152 rcu_read_lock();
1153 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1154 if (ssid_eid)
1155 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1156 else
1157 lbs_deb_assoc("no SSID\n");
1158 rcu_read_unlock();
1159
1160 /* add DS param TLV */
1161 if (bss->channel)
1162 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1163 else
1164 lbs_deb_assoc("no channel\n");
1165
1166 /* add (empty) CF param TLV */
1167 pos += lbs_add_cf_param_tlv(pos);
1168
1169 /* add rates TLV */
1170 tmp = pos + 4; /* skip Marvell IE header */
1171 pos += lbs_add_common_rates_tlv(pos, bss);
1172 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1173
1174 /* add auth type TLV */
1175 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1176 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1177
1178 /* add WPA/WPA2 TLV */
1179 if (sme->ie && sme->ie_len)
1180 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1181
1182 len = sizeof(*cmd) + (u16)(pos - (u8 *) &cmd->iebuf);
1183 cmd->hdr.size = cpu_to_le16(len);
1184
1185 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1186 le16_to_cpu(cmd->hdr.size));
1187
1188 /* store for later use */
1189 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1190
1191 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1192 if (ret)
1193 goto done;
1194
1195 /* generate connect message to cfg80211 */
1196
1197 resp = (void *) cmd; /* recast for easier field access */
1198 status = le16_to_cpu(resp->statuscode);
1199
1200 /* Older FW versions map the IEEE 802.11 Status Code in the association
1201 * response to the following values returned in resp->statuscode:
1202 *
1203 * IEEE Status Code Marvell Status Code
1204 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1205 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1206 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1207 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1208 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1209 * others -> 0x0003 ASSOC_RESULT_REFUSED
1210 *
1211 * Other response codes:
1212 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1213 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1214 * association response from the AP)
1215 */
1216 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1217 switch (status) {
1218 case 0:
1219 break;
1220 case 1:
1221 lbs_deb_assoc("invalid association parameters\n");
1222 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1223 break;
1224 case 2:
1225 lbs_deb_assoc("timer expired while waiting for AP\n");
1226 status = WLAN_STATUS_AUTH_TIMEOUT;
1227 break;
1228 case 3:
1229 lbs_deb_assoc("association refused by AP\n");
1230 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1231 break;
1232 case 4:
1233 lbs_deb_assoc("authentication refused by AP\n");
1234 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1235 break;
1236 default:
1237 lbs_deb_assoc("association failure %d\n", status);
1238 /* v5 OLPC firmware does return the AP status code if
1239 * it's not one of the values above. Let that through.
1240 */
1241 break;
1242 }
1243 }
1244
1245 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1246 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1247 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1248
1249 resp_ie_len = le16_to_cpu(resp->hdr.size)
1250 - sizeof(resp->hdr)
1251 - 6;
1252 cfg80211_connect_result(priv->dev,
1253 priv->assoc_bss,
1254 sme->ie, sme->ie_len,
1255 resp->iebuf, resp_ie_len,
1256 status,
1257 GFP_KERNEL);
1258
1259 if (status == 0) {
1260 /* TODO: get rid of priv->connect_status */
1261 priv->connect_status = LBS_CONNECTED;
1262 netif_carrier_on(priv->dev);
1263 if (!priv->tx_pending_len)
1264 netif_tx_wake_all_queues(priv->dev);
1265 }
1266
1267 kfree(cmd);
1268 done:
1269 return ret;
1270 }
1271
1272 static struct cfg80211_scan_request *
1273 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1274 {
1275 struct cfg80211_scan_request *creq = NULL;
1276 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1277 enum nl80211_band band;
1278
1279 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1280 n_channels * sizeof(void *),
1281 GFP_ATOMIC);
1282 if (!creq)
1283 return NULL;
1284
1285 /* SSIDs come after channels */
1286 creq->ssids = (void *)&creq->channels[n_channels];
1287 creq->n_channels = n_channels;
1288 creq->n_ssids = 1;
1289
1290 /* Scan all available channels */
1291 i = 0;
1292 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1293 int j;
1294
1295 if (!wiphy->bands[band])
1296 continue;
1297
1298 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1299 /* ignore disabled channels */
1300 if (wiphy->bands[band]->channels[j].flags &
1301 IEEE80211_CHAN_DISABLED)
1302 continue;
1303
1304 creq->channels[i] = &wiphy->bands[band]->channels[j];
1305 i++;
1306 }
1307 }
1308 if (i) {
1309 /* Set real number of channels specified in creq->channels[] */
1310 creq->n_channels = i;
1311
1312 /* Scan for the SSID we're going to connect to */
1313 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1314 creq->ssids[0].ssid_len = sme->ssid_len;
1315 } else {
1316 /* No channels found... */
1317 kfree(creq);
1318 creq = NULL;
1319 }
1320
1321 return creq;
1322 }
1323
1324 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1325 struct cfg80211_connect_params *sme)
1326 {
1327 struct lbs_private *priv = wiphy_priv(wiphy);
1328 struct cfg80211_bss *bss = NULL;
1329 int ret = 0;
1330 u8 preamble = RADIO_PREAMBLE_SHORT;
1331
1332 if (dev == priv->mesh_dev)
1333 return -EOPNOTSUPP;
1334
1335 if (!sme->bssid) {
1336 struct cfg80211_scan_request *creq;
1337
1338 /*
1339 * Scan for the requested network after waiting for existing
1340 * scans to finish.
1341 */
1342 lbs_deb_assoc("assoc: waiting for existing scans\n");
1343 wait_event_interruptible_timeout(priv->scan_q,
1344 (priv->scan_req == NULL),
1345 (15 * HZ));
1346
1347 creq = _new_connect_scan_req(wiphy, sme);
1348 if (!creq) {
1349 ret = -EINVAL;
1350 goto done;
1351 }
1352
1353 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1354 _internal_start_scan(priv, true, creq);
1355
1356 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1357 wait_event_interruptible_timeout(priv->scan_q,
1358 (priv->scan_req == NULL),
1359 (15 * HZ));
1360 lbs_deb_assoc("assoc: scanning completed\n");
1361 }
1362
1363 /* Find the BSS we want using available scan results */
1364 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1365 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1366 IEEE80211_PRIVACY_ANY);
1367 if (!bss) {
1368 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1369 sme->bssid);
1370 ret = -ENOENT;
1371 goto done;
1372 }
1373 lbs_deb_assoc("trying %pM\n", bss->bssid);
1374 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1375 sme->crypto.cipher_group,
1376 sme->key_idx, sme->key_len);
1377
1378 /* As this is a new connection, clear locally stored WEP keys */
1379 priv->wep_tx_key = 0;
1380 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1381 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1382
1383 /* set/remove WEP keys */
1384 switch (sme->crypto.cipher_group) {
1385 case WLAN_CIPHER_SUITE_WEP40:
1386 case WLAN_CIPHER_SUITE_WEP104:
1387 /* Store provided WEP keys in priv-> */
1388 priv->wep_tx_key = sme->key_idx;
1389 priv->wep_key_len[sme->key_idx] = sme->key_len;
1390 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1391 /* Set WEP keys and WEP mode */
1392 lbs_set_wep_keys(priv);
1393 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1394 lbs_set_mac_control(priv);
1395 /* No RSN mode for WEP */
1396 lbs_enable_rsn(priv, 0);
1397 break;
1398 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1399 /*
1400 * If we don't have no WEP, no WPA and no WPA2,
1401 * we remove all keys like in the WPA/WPA2 setup,
1402 * we just don't set RSN.
1403 *
1404 * Therefore: fall-through
1405 */
1406 case WLAN_CIPHER_SUITE_TKIP:
1407 case WLAN_CIPHER_SUITE_CCMP:
1408 /* Remove WEP keys and WEP mode */
1409 lbs_remove_wep_keys(priv);
1410 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1411 lbs_set_mac_control(priv);
1412
1413 /* clear the WPA/WPA2 keys */
1414 lbs_set_key_material(priv,
1415 KEY_TYPE_ID_WEP, /* doesn't matter */
1416 KEY_INFO_WPA_UNICAST,
1417 NULL, 0);
1418 lbs_set_key_material(priv,
1419 KEY_TYPE_ID_WEP, /* doesn't matter */
1420 KEY_INFO_WPA_MCAST,
1421 NULL, 0);
1422 /* RSN mode for WPA/WPA2 */
1423 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1424 break;
1425 default:
1426 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1427 sme->crypto.cipher_group);
1428 ret = -ENOTSUPP;
1429 goto done;
1430 }
1431
1432 ret = lbs_set_authtype(priv, sme);
1433 if (ret == -ENOTSUPP) {
1434 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1435 goto done;
1436 }
1437
1438 lbs_set_radio(priv, preamble, 1);
1439
1440 /* Do the actual association */
1441 ret = lbs_associate(priv, bss, sme);
1442
1443 done:
1444 if (bss)
1445 cfg80211_put_bss(wiphy, bss);
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 /* store for lbs_cfg_ret_disconnect() */
1482 priv->disassoc_reason = reason_code;
1483
1484 return lbs_disconnect(priv, reason_code);
1485 }
1486
1487 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1488 struct net_device *netdev, int link_id,
1489 u8 key_index, bool unicast,
1490 bool multicast)
1491 {
1492 struct lbs_private *priv = wiphy_priv(wiphy);
1493
1494 if (netdev == priv->mesh_dev)
1495 return -EOPNOTSUPP;
1496
1497 if (key_index != priv->wep_tx_key) {
1498 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1499 priv->wep_tx_key = key_index;
1500 lbs_set_wep_keys(priv);
1501 }
1502
1503 return 0;
1504 }
1505
1506
1507 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1508 int link_id, u8 idx, bool pairwise,
1509 const u8 *mac_addr, struct key_params *params)
1510 {
1511 struct lbs_private *priv = wiphy_priv(wiphy);
1512 u16 key_info;
1513 u16 key_type;
1514 int ret = 0;
1515
1516 if (netdev == priv->mesh_dev)
1517 return -EOPNOTSUPP;
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 int link_id, u8 key_index, bool pairwise,
1570 const u8 *mac_addr)
1571 {
1572
1573 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1574 key_index, mac_addr);
1575
1576 #ifdef TODO
1577 struct lbs_private *priv = wiphy_priv(wiphy);
1578 /*
1579 * I think can keep this a NO-OP, because:
1580
1581 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1582 * - neither "iw" nor "wpa_supplicant" won't call this during
1583 * an ongoing connection
1584 * - TODO: but I have to check if this is still true when
1585 * I set the AP to periodic re-keying
1586 * - we've not kzallec() something when we've added a key at
1587 * lbs_cfg_connect() or lbs_cfg_add_key().
1588 *
1589 * This causes lbs_cfg_del_key() only called at disconnect time,
1590 * where we'd just waste time deleting a key that is not going
1591 * to be used anyway.
1592 */
1593 if (key_index < 3 && priv->wep_key_len[key_index]) {
1594 priv->wep_key_len[key_index] = 0;
1595 lbs_set_wep_keys(priv);
1596 }
1597 #endif
1598
1599 return 0;
1600 }
1601
1602
1603 /*
1604 * Get station
1605 */
1606
1607 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1608 const u8 *mac, struct station_info *sinfo)
1609 {
1610 struct lbs_private *priv = wiphy_priv(wiphy);
1611 s8 signal, noise;
1612 int ret;
1613 size_t i;
1614
1615 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1616 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1617 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1618 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1619 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1620 sinfo->tx_packets = priv->dev->stats.tx_packets;
1621 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1622 sinfo->rx_packets = priv->dev->stats.rx_packets;
1623
1624 /* Get current RSSI */
1625 ret = lbs_get_rssi(priv, &signal, &noise);
1626 if (ret == 0) {
1627 sinfo->signal = signal;
1628 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1629 }
1630
1631 /* Convert priv->cur_rate from hw_value to NL80211 value */
1632 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1633 if (priv->cur_rate == lbs_rates[i].hw_value) {
1634 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1635 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1636 break;
1637 }
1638 }
1639
1640 return 0;
1641 }
1642
1643
1644
1645
1646 /*
1647 * Change interface
1648 */
1649
1650 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1651 enum nl80211_iftype type,
1652 struct vif_params *params)
1653 {
1654 struct lbs_private *priv = wiphy_priv(wiphy);
1655 int ret = 0;
1656
1657 if (dev == priv->mesh_dev)
1658 return -EOPNOTSUPP;
1659
1660 switch (type) {
1661 case NL80211_IFTYPE_MONITOR:
1662 case NL80211_IFTYPE_STATION:
1663 case NL80211_IFTYPE_ADHOC:
1664 break;
1665 default:
1666 return -EOPNOTSUPP;
1667 }
1668
1669 if (priv->iface_running)
1670 ret = lbs_set_iface_type(priv, type);
1671
1672 if (!ret)
1673 priv->wdev->iftype = type;
1674
1675 return ret;
1676 }
1677
1678
1679
1680 /*
1681 * IBSS (Ad-Hoc)
1682 */
1683
1684 /*
1685 * The firmware needs the following bits masked out of the beacon-derived
1686 * capability field when associating/joining to a BSS:
1687 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1688 */
1689 #define CAPINFO_MASK (~(0xda00))
1690
1691
1692 static void lbs_join_post(struct lbs_private *priv,
1693 struct cfg80211_ibss_params *params,
1694 u8 *bssid, u16 capability)
1695 {
1696 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1697 2 + 4 + /* basic rates */
1698 2 + 1 + /* DS parameter */
1699 2 + 2 + /* atim */
1700 2 + 8]; /* extended rates */
1701 u8 *fake = fake_ie;
1702 struct cfg80211_bss *bss;
1703
1704 /*
1705 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1706 * the real IE from the firmware. So we fabricate a fake IE based on
1707 * what the firmware actually sends (sniffed with wireshark).
1708 */
1709 /* Fake SSID IE */
1710 *fake++ = WLAN_EID_SSID;
1711 *fake++ = params->ssid_len;
1712 memcpy(fake, params->ssid, params->ssid_len);
1713 fake += params->ssid_len;
1714 /* Fake supported basic rates IE */
1715 *fake++ = WLAN_EID_SUPP_RATES;
1716 *fake++ = 4;
1717 *fake++ = 0x82;
1718 *fake++ = 0x84;
1719 *fake++ = 0x8b;
1720 *fake++ = 0x96;
1721 /* Fake DS channel IE */
1722 *fake++ = WLAN_EID_DS_PARAMS;
1723 *fake++ = 1;
1724 *fake++ = params->chandef.chan->hw_value;
1725 /* Fake IBSS params IE */
1726 *fake++ = WLAN_EID_IBSS_PARAMS;
1727 *fake++ = 2;
1728 *fake++ = 0; /* ATIM=0 */
1729 *fake++ = 0;
1730 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1731 * but I don't know how this could be checked */
1732 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1733 *fake++ = 8;
1734 *fake++ = 0x0c;
1735 *fake++ = 0x12;
1736 *fake++ = 0x18;
1737 *fake++ = 0x24;
1738 *fake++ = 0x30;
1739 *fake++ = 0x48;
1740 *fake++ = 0x60;
1741 *fake++ = 0x6c;
1742 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1743
1744 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1745 params->chandef.chan,
1746 CFG80211_BSS_FTYPE_UNKNOWN,
1747 bssid,
1748 0,
1749 capability,
1750 params->beacon_interval,
1751 fake_ie, fake - fake_ie,
1752 0, GFP_KERNEL);
1753 cfg80211_put_bss(priv->wdev->wiphy, bss);
1754
1755 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1756 GFP_KERNEL);
1757
1758 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1759 priv->connect_status = LBS_CONNECTED;
1760 netif_carrier_on(priv->dev);
1761 if (!priv->tx_pending_len)
1762 netif_wake_queue(priv->dev);
1763 }
1764
1765 static int lbs_ibss_join_existing(struct lbs_private *priv,
1766 struct cfg80211_ibss_params *params,
1767 struct cfg80211_bss *bss)
1768 {
1769 const u8 *rates_eid;
1770 struct cmd_ds_802_11_ad_hoc_join cmd;
1771 u8 preamble = RADIO_PREAMBLE_SHORT;
1772 int ret = 0;
1773 int hw, i;
1774 u8 rates_max;
1775 u8 *rates;
1776
1777 /* TODO: set preamble based on scan result */
1778 ret = lbs_set_radio(priv, preamble, 1);
1779 if (ret)
1780 goto out;
1781
1782 /*
1783 * Example CMD_802_11_AD_HOC_JOIN command:
1784 *
1785 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1786 * size 65 00
1787 * sequence xx xx
1788 * result 00 00
1789 * bssid 02 27 27 97 2f 96
1790 * ssid 49 42 53 53 00 00 00 00
1791 * 00 00 00 00 00 00 00 00
1792 * 00 00 00 00 00 00 00 00
1793 * 00 00 00 00 00 00 00 00
1794 * type 02 CMD_BSS_TYPE_IBSS
1795 * beacon period 64 00
1796 * dtim period 00
1797 * timestamp 00 00 00 00 00 00 00 00
1798 * localtime 00 00 00 00 00 00 00 00
1799 * IE DS 03
1800 * IE DS len 01
1801 * IE DS channel 01
1802 * reserveed 00 00 00 00
1803 * IE IBSS 06
1804 * IE IBSS len 02
1805 * IE IBSS atim 00 00
1806 * reserved 00 00 00 00
1807 * capability 02 00
1808 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1809 * fail timeout ff 00
1810 * probe delay 00 00
1811 */
1812 memset(&cmd, 0, sizeof(cmd));
1813 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1814
1815 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1816 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1817 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1818 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1819 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1820 cmd.bss.ds.header.len = 1;
1821 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1822 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1823 cmd.bss.ibss.header.len = 2;
1824 cmd.bss.ibss.atimwindow = 0;
1825 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1826
1827 /* set rates to the intersection of our rates and the rates in the
1828 bss */
1829 rcu_read_lock();
1830 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1831 if (!rates_eid) {
1832 lbs_add_rates(cmd.bss.rates);
1833 } else {
1834 rates_max = rates_eid[1];
1835 if (rates_max > MAX_RATES) {
1836 lbs_deb_join("invalid rates");
1837 rcu_read_unlock();
1838 ret = -EINVAL;
1839 goto out;
1840 }
1841 rates = cmd.bss.rates;
1842 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1843 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1844 for (i = 0; i < rates_max; i++) {
1845 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1846 u8 rate = rates_eid[i+2];
1847 if (rate == 0x02 || rate == 0x04 ||
1848 rate == 0x0b || rate == 0x16)
1849 rate |= 0x80;
1850 *rates++ = rate;
1851 }
1852 }
1853 }
1854 }
1855 rcu_read_unlock();
1856
1857 /* Only v8 and below support setting this */
1858 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1859 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1860 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1861 }
1862 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1863 if (ret)
1864 goto out;
1865
1866 /*
1867 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1868 *
1869 * response 2c 80
1870 * size 09 00
1871 * sequence xx xx
1872 * result 00 00
1873 * reserved 00
1874 */
1875 lbs_join_post(priv, params, bss->bssid, bss->capability);
1876
1877 out:
1878 return ret;
1879 }
1880
1881
1882
1883 static int lbs_ibss_start_new(struct lbs_private *priv,
1884 struct cfg80211_ibss_params *params)
1885 {
1886 struct cmd_ds_802_11_ad_hoc_start cmd;
1887 struct cmd_ds_802_11_ad_hoc_result *resp =
1888 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1889 u8 preamble = RADIO_PREAMBLE_SHORT;
1890 int ret = 0;
1891 u16 capability;
1892
1893 ret = lbs_set_radio(priv, preamble, 1);
1894 if (ret)
1895 goto out;
1896
1897 /*
1898 * Example CMD_802_11_AD_HOC_START command:
1899 *
1900 * command 2b 00 CMD_802_11_AD_HOC_START
1901 * size b1 00
1902 * sequence xx xx
1903 * result 00 00
1904 * ssid 54 45 53 54 00 00 00 00
1905 * 00 00 00 00 00 00 00 00
1906 * 00 00 00 00 00 00 00 00
1907 * 00 00 00 00 00 00 00 00
1908 * bss type 02
1909 * beacon period 64 00
1910 * dtim period 00
1911 * IE IBSS 06
1912 * IE IBSS len 02
1913 * IE IBSS atim 00 00
1914 * reserved 00 00 00 00
1915 * IE DS 03
1916 * IE DS len 01
1917 * IE DS channel 01
1918 * reserved 00 00 00 00
1919 * probe delay 00 00
1920 * capability 02 00
1921 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1922 * 0c 12 18 24 30 48 60 6c
1923 * padding 100 bytes
1924 */
1925 memset(&cmd, 0, sizeof(cmd));
1926 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1927 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1928 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1929 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1930 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1931 cmd.ibss.header.len = 2;
1932 cmd.ibss.atimwindow = 0;
1933 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1934 cmd.ds.header.len = 1;
1935 cmd.ds.channel = params->chandef.chan->hw_value;
1936 /* Only v8 and below support setting probe delay */
1937 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1938 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1939 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1940 capability = WLAN_CAPABILITY_IBSS;
1941 cmd.capability = cpu_to_le16(capability);
1942 lbs_add_rates(cmd.rates);
1943
1944
1945 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1946 if (ret)
1947 goto out;
1948
1949 /*
1950 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1951 *
1952 * response 2b 80
1953 * size 14 00
1954 * sequence xx xx
1955 * result 00 00
1956 * reserved 00
1957 * bssid 02 2b 7b 0f 86 0e
1958 */
1959 lbs_join_post(priv, params, resp->bssid, capability);
1960
1961 out:
1962 return ret;
1963 }
1964
1965
1966 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1967 struct cfg80211_ibss_params *params)
1968 {
1969 struct lbs_private *priv = wiphy_priv(wiphy);
1970 int ret = 0;
1971 struct cfg80211_bss *bss;
1972
1973 if (dev == priv->mesh_dev)
1974 return -EOPNOTSUPP;
1975
1976 if (!params->chandef.chan) {
1977 ret = -ENOTSUPP;
1978 goto out;
1979 }
1980
1981 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1982 if (ret)
1983 goto out;
1984
1985 /* Search if someone is beaconing. This assumes that the
1986 * bss list is populated already */
1987 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1988 params->ssid, params->ssid_len,
1989 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1990
1991 if (bss) {
1992 ret = lbs_ibss_join_existing(priv, params, bss);
1993 cfg80211_put_bss(wiphy, bss);
1994 } else
1995 ret = lbs_ibss_start_new(priv, params);
1996
1997
1998 out:
1999 return ret;
2000 }
2001
2002
2003 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2004 {
2005 struct lbs_private *priv = wiphy_priv(wiphy);
2006 struct cmd_ds_802_11_ad_hoc_stop cmd;
2007 int ret = 0;
2008
2009 if (dev == priv->mesh_dev)
2010 return -EOPNOTSUPP;
2011
2012 memset(&cmd, 0, sizeof(cmd));
2013 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2014 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2015
2016 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2017 lbs_mac_event_disconnected(priv, true);
2018
2019 return ret;
2020 }
2021
2022
2023
2024 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2025 bool enabled, int timeout)
2026 {
2027 struct lbs_private *priv = wiphy_priv(wiphy);
2028
2029 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
2030 if (!enabled)
2031 return 0;
2032 else
2033 return -EINVAL;
2034 }
2035 /* firmware does not work well with too long latency with power saving
2036 * enabled, so do not enable it if there is only polling, no
2037 * interrupts (like in some sdio hosts which can only
2038 * poll for sdio irqs)
2039 */
2040 if (priv->is_polling) {
2041 if (!enabled)
2042 return 0;
2043 else
2044 return -EINVAL;
2045 }
2046 if (!enabled) {
2047 priv->psmode = LBS802_11POWERMODECAM;
2048 if (priv->psstate != PS_STATE_FULL_POWER)
2049 lbs_set_ps_mode(priv,
2050 PS_MODE_ACTION_EXIT_PS,
2051 true);
2052 return 0;
2053 }
2054 if (priv->psmode != LBS802_11POWERMODECAM)
2055 return 0;
2056 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2057 if (priv->connect_status == LBS_CONNECTED)
2058 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2059 return 0;
2060 }
2061
2062 /*
2063 * Initialization
2064 */
2065
2066 static const struct cfg80211_ops lbs_cfg80211_ops = {
2067 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2068 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2069 .scan = lbs_cfg_scan,
2070 .connect = lbs_cfg_connect,
2071 .disconnect = lbs_cfg_disconnect,
2072 .add_key = lbs_cfg_add_key,
2073 .del_key = lbs_cfg_del_key,
2074 .set_default_key = lbs_cfg_set_default_key,
2075 .get_station = lbs_cfg_get_station,
2076 .change_virtual_intf = lbs_change_intf,
2077 .join_ibss = lbs_join_ibss,
2078 .leave_ibss = lbs_leave_ibss,
2079 .set_power_mgmt = lbs_set_power_mgmt,
2080 };
2081
2082
2083 /*
2084 * At this time lbs_private *priv doesn't even exist, so we just allocate
2085 * memory and don't initialize the wiphy further. This is postponed until we
2086 * can talk to the firmware and happens at registration time in
2087 * lbs_cfg_wiphy_register().
2088 */
2089 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2090 {
2091 int ret = 0;
2092 struct wireless_dev *wdev;
2093
2094 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2095 if (!wdev)
2096 return ERR_PTR(-ENOMEM);
2097
2098 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2099 if (!wdev->wiphy) {
2100 dev_err(dev, "cannot allocate wiphy\n");
2101 ret = -ENOMEM;
2102 goto err_wiphy_new;
2103 }
2104
2105 return wdev;
2106
2107 err_wiphy_new:
2108 kfree(wdev);
2109 return ERR_PTR(ret);
2110 }
2111
2112
2113 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2114 {
2115 struct region_code_mapping {
2116 const char *cn;
2117 int code;
2118 };
2119
2120 /* Section 5.17.2 */
2121 static const struct region_code_mapping regmap[] = {
2122 {"US ", 0x10}, /* US FCC */
2123 {"CA ", 0x20}, /* Canada */
2124 {"EU ", 0x30}, /* ETSI */
2125 {"ES ", 0x31}, /* Spain */
2126 {"FR ", 0x32}, /* France */
2127 {"JP ", 0x40}, /* Japan */
2128 };
2129 size_t i;
2130
2131 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2132 if (regmap[i].code == priv->regioncode) {
2133 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2134 break;
2135 }
2136 }
2137
2138 static void lbs_reg_notifier(struct wiphy *wiphy,
2139 struct regulatory_request *request)
2140 {
2141 struct lbs_private *priv = wiphy_priv(wiphy);
2142
2143 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2144 if (lbs_iface_active(priv))
2145 lbs_set_11d_domain_info(priv);
2146 }
2147
2148 /*
2149 * This function get's called after lbs_setup_firmware() determined the
2150 * firmware capabities. So we can setup the wiphy according to our
2151 * hardware/firmware.
2152 */
2153 int lbs_cfg_register(struct lbs_private *priv)
2154 {
2155 struct wireless_dev *wdev = priv->wdev;
2156 int ret;
2157
2158 wdev->wiphy->max_scan_ssids = 1;
2159 wdev->wiphy->max_scan_ie_len = 256;
2160 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2161
2162 wdev->wiphy->interface_modes =
2163 BIT(NL80211_IFTYPE_STATION) |
2164 BIT(NL80211_IFTYPE_ADHOC);
2165 if (lbs_rtap_supported(priv))
2166 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2167 if (lbs_mesh_activated(priv))
2168 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2169
2170 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2171
2172 /*
2173 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2174 * never seen a firmware without WPA
2175 */
2176 wdev->wiphy->cipher_suites = cipher_suites;
2177 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2178 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2179
2180 ret = wiphy_register(wdev->wiphy);
2181 if (ret < 0)
2182 pr_err("cannot register wiphy device\n");
2183
2184 priv->wiphy_registered = true;
2185
2186 ret = register_netdev(priv->dev);
2187 if (ret)
2188 pr_err("cannot register network device\n");
2189
2190 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2191
2192 lbs_cfg_set_regulatory_hint(priv);
2193
2194 return ret;
2195 }
2196
2197 void lbs_scan_deinit(struct lbs_private *priv)
2198 {
2199 cancel_delayed_work_sync(&priv->scan_work);
2200 }
2201
2202
2203 void lbs_cfg_free(struct lbs_private *priv)
2204 {
2205 struct wireless_dev *wdev = priv->wdev;
2206
2207 if (!wdev)
2208 return;
2209
2210 if (priv->wiphy_registered)
2211 wiphy_unregister(wdev->wiphy);
2212
2213 if (wdev->wiphy)
2214 wiphy_free(wdev->wiphy);
2215
2216 kfree(wdev);
2217 }
Kernel DRM miscellaneous fixes and cross-tree changes