1 /*
2 * Implement cfg80211 ("iw") support.
3 *
4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
5 * Holger Schurig <hs4233@mail.mn-solutions.de>
6 *
7 */
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #include <linux/hardirq.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/slab.h>
15 #include <linux/ieee80211.h>
16 #include <net/cfg80211.h>
17 #include <asm/unaligned.h>
18
19 #include "decl.h"
20 #include "cfg.h"
21 #include "cmd.h"
22 #include "mesh.h"
23
24
25 #define CHAN2G(_channel, _freq, _flags) { \
26 .band = IEEE80211_BAND_2GHZ, \
27 .center_freq = (_freq), \
28 .hw_value = (_channel), \
29 .flags = (_flags), \
30 .max_antenna_gain = 0, \
31 .max_power = 30, \
32 }
33
34 static struct ieee80211_channel lbs_2ghz_channels[] = {
35 CHAN2G(1, 2412, 0),
36 CHAN2G(2, 2417, 0),
37 CHAN2G(3, 2422, 0),
38 CHAN2G(4, 2427, 0),
39 CHAN2G(5, 2432, 0),
40 CHAN2G(6, 2437, 0),
41 CHAN2G(7, 2442, 0),
42 CHAN2G(8, 2447, 0),
43 CHAN2G(9, 2452, 0),
44 CHAN2G(10, 2457, 0),
45 CHAN2G(11, 2462, 0),
46 CHAN2G(12, 2467, 0),
47 CHAN2G(13, 2472, 0),
48 CHAN2G(14, 2484, 0),
49 };
50
51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
52 .bitrate = (_rate), \
53 .hw_value = (_hw_value), \
54 .flags = (_flags), \
55 }
56
57
58 /* Table 6 in section 3.2.1.1 */
59 static struct ieee80211_rate lbs_rates[] = {
60 RATETAB_ENT(10, 0, 0),
61 RATETAB_ENT(20, 1, 0),
62 RATETAB_ENT(55, 2, 0),
63 RATETAB_ENT(110, 3, 0),
64 RATETAB_ENT(60, 9, 0),
65 RATETAB_ENT(90, 6, 0),
66 RATETAB_ENT(120, 7, 0),
67 RATETAB_ENT(180, 8, 0),
68 RATETAB_ENT(240, 9, 0),
69 RATETAB_ENT(360, 10, 0),
70 RATETAB_ENT(480, 11, 0),
71 RATETAB_ENT(540, 12, 0),
72 };
73
74 static struct ieee80211_supported_band lbs_band_2ghz = {
75 .channels = lbs_2ghz_channels,
76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
77 .bitrates = lbs_rates,
78 .n_bitrates = ARRAY_SIZE(lbs_rates),
79 };
80
81
82 static const u32 cipher_suites[] = {
83 WLAN_CIPHER_SUITE_WEP40,
84 WLAN_CIPHER_SUITE_WEP104,
85 WLAN_CIPHER_SUITE_TKIP,
86 WLAN_CIPHER_SUITE_CCMP,
87 };
88
89 /* Time to stay on the channel */
90 #define LBS_DWELL_PASSIVE 100
91 #define LBS_DWELL_ACTIVE 40
92
93
94 /***************************************************************************
95 * Misc utility functions
96 *
97 * TLVs are Marvell specific. They are very similar to IEs, they have the
98 * same structure: type, length, data*. The only difference: for IEs, the
99 * type and length are u8, but for TLVs they're __le16.
100 */
101
102 /*
103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
104 * in the firmware spec
105 */
lbs_auth_to_authtype(enum nl80211_auth_type auth_type)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 */
lbs_add_rates(u8 * rates)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
lbs_add_ssid_tlv(u8 * tlv,const u8 * ssid,int ssid_len)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
lbs_add_channel_list_tlv(struct lbs_private * priv,u8 * tlv,int last_channel,int active_scan)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 */
lbs_add_supported_rates_tlv(u8 * tlv)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 *
add_ie_rates(u8 * tlv,const u8 * ie,int * nrates)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 */
lbs_add_common_rates_tlv(u8 * tlv,struct cfg80211_bss * bss)295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
296 {
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
299 int n = 0;
300
301 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
302 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
303
304 /*
305 * 01 00 TLV_TYPE_RATES
306 * 04 00 len
307 * 82 84 8b 96 rates
308 */
309 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
310 tlv += sizeof(rate_tlv->header);
311
312 /* Add basic rates */
313 if (rates_eid) {
314 tlv = add_ie_rates(tlv, rates_eid, &n);
315
316 /* Add extended rates, if any */
317 if (ext_rates_eid)
318 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
319 } else {
320 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
321 /* Fallback: add basic 802.11b rates */
322 *tlv++ = 0x82;
323 *tlv++ = 0x84;
324 *tlv++ = 0x8b;
325 *tlv++ = 0x96;
326 n = 4;
327 }
328
329 rate_tlv->header.len = cpu_to_le16(n);
330 return sizeof(rate_tlv->header) + n;
331 }
332
333
334 /*
335 * Add auth type TLV.
336 *
337 * This is only needed for newer firmware (V9 and up).
338 */
339 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
340 sizeof(struct mrvl_ie_auth_type)
341
lbs_add_auth_type_tlv(u8 * tlv,enum nl80211_auth_type auth_type)342 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
343 {
344 struct mrvl_ie_auth_type *auth = (void *) tlv;
345
346 /*
347 * 1f 01 TLV_TYPE_AUTH_TYPE
348 * 01 00 len
349 * 01 auth type
350 */
351 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
352 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
353 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
354 return sizeof(*auth);
355 }
356
357
358 /*
359 * Add channel (phy ds) TLV
360 */
361 #define LBS_MAX_CHANNEL_TLV_SIZE \
362 sizeof(struct mrvl_ie_header)
363
lbs_add_channel_tlv(u8 * tlv,u8 channel)364 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
365 {
366 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
367
368 /*
369 * 03 00 TLV_TYPE_PHY_DS
370 * 01 00 len
371 * 06 channel
372 */
373 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
374 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
375 ds->channel = channel;
376 return sizeof(*ds);
377 }
378
379
380 /*
381 * Add (empty) CF param TLV of the form:
382 */
383 #define LBS_MAX_CF_PARAM_TLV_SIZE \
384 sizeof(struct mrvl_ie_header)
385
lbs_add_cf_param_tlv(u8 * tlv)386 static int lbs_add_cf_param_tlv(u8 *tlv)
387 {
388 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
389
390 /*
391 * 04 00 TLV_TYPE_CF
392 * 06 00 len
393 * 00 cfpcnt
394 * 00 cfpperiod
395 * 00 00 cfpmaxduration
396 * 00 00 cfpdurationremaining
397 */
398 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
399 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
400 return sizeof(*cf);
401 }
402
403 /*
404 * Add WPA TLV
405 */
406 #define LBS_MAX_WPA_TLV_SIZE \
407 (sizeof(struct mrvl_ie_header) \
408 + 128 /* TODO: I guessed the size */)
409
lbs_add_wpa_tlv(u8 * tlv,const u8 * ie,u8 ie_len)410 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
411 {
412 size_t tlv_len;
413
414 /*
415 * We need just convert an IE to an TLV. IEs use u8 for the header,
416 * u8 type
417 * u8 len
418 * u8[] data
419 * but TLVs use __le16 instead:
420 * __le16 type
421 * __le16 len
422 * u8[] data
423 */
424 *tlv++ = *ie++;
425 *tlv++ = 0;
426 tlv_len = *tlv++ = *ie++;
427 *tlv++ = 0;
428 while (tlv_len--)
429 *tlv++ = *ie++;
430 /* the TLV is two bytes larger than the IE */
431 return ie_len + 2;
432 }
433
434 /*
435 * Set Channel
436 */
437
lbs_cfg_set_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * channel,enum nl80211_channel_type channel_type)438 static int lbs_cfg_set_channel(struct wiphy *wiphy,
439 struct net_device *netdev,
440 struct ieee80211_channel *channel,
441 enum nl80211_channel_type channel_type)
442 {
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
447 netdev_name(netdev), channel->center_freq, channel_type);
448
449 if (channel_type != NL80211_CHAN_NO_HT)
450 goto out;
451
452 if (netdev == priv->mesh_dev)
453 ret = lbs_mesh_set_channel(priv, channel->hw_value);
454 else
455 ret = lbs_set_channel(priv, channel->hw_value);
456
457 out:
458 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
459 return ret;
460 }
461
462
463
464 /*
465 * Scanning
466 */
467
468 /*
469 * When scanning, the firmware doesn't send a nul packet with the power-safe
470 * bit to the AP. So we cannot stay away from our current channel too long,
471 * otherwise we loose data. So take a "nap" while scanning every other
472 * while.
473 */
474 #define LBS_SCAN_BEFORE_NAP 4
475
476
477 /*
478 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
479 * which isn't really an RSSI, as it becomes larger when moving away from
480 * the AP. Anyway, we need to convert that into mBm.
481 */
482 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
483 ((-(int)rssi + 3)*100)
484
lbs_ret_scan(struct lbs_private * priv,unsigned long dummy,struct cmd_header * resp)485 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
486 struct cmd_header *resp)
487 {
488 struct cfg80211_bss *bss;
489 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
490 int bsssize;
491 const u8 *pos;
492 const u8 *tsfdesc;
493 int tsfsize;
494 int i;
495 int ret = -EILSEQ;
496
497 lbs_deb_enter(LBS_DEB_CFG80211);
498
499 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
500
501 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
502 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
503
504 if (scanresp->nr_sets == 0) {
505 ret = 0;
506 goto done;
507 }
508
509 /*
510 * The general layout of the scan response is described in chapter
511 * 5.7.1. Basically we have a common part, then any number of BSS
512 * descriptor sections. Finally we have section with the same number
513 * of TSFs.
514 *
515 * cmd_ds_802_11_scan_rsp
516 * cmd_header
517 * pos_size
518 * nr_sets
519 * bssdesc 1
520 * bssid
521 * rssi
522 * timestamp
523 * intvl
524 * capa
525 * IEs
526 * bssdesc 2
527 * bssdesc n
528 * MrvlIEtypes_TsfFimestamp_t
529 * TSF for BSS 1
530 * TSF for BSS 2
531 * TSF for BSS n
532 */
533
534 pos = scanresp->bssdesc_and_tlvbuffer;
535
536 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
537 scanresp->bssdescriptsize);
538
539 tsfdesc = pos + bsssize;
540 tsfsize = 4 + 8 * scanresp->nr_sets;
541 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
542
543 /* Validity check: we expect a Marvell-Local TLV */
544 i = get_unaligned_le16(tsfdesc);
545 tsfdesc += 2;
546 if (i != TLV_TYPE_TSFTIMESTAMP) {
547 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
548 goto done;
549 }
550
551 /*
552 * Validity check: the TLV holds TSF values with 8 bytes each, so
553 * the size in the TLV must match the nr_sets value
554 */
555 i = get_unaligned_le16(tsfdesc);
556 tsfdesc += 2;
557 if (i / 8 != scanresp->nr_sets) {
558 lbs_deb_scan("scan response: invalid number of TSF timestamp "
559 "sets (expected %d got %d)\n", scanresp->nr_sets,
560 i / 8);
561 goto done;
562 }
563
564 for (i = 0; i < scanresp->nr_sets; i++) {
565 const u8 *bssid;
566 const u8 *ie;
567 int left;
568 int ielen;
569 int rssi;
570 u16 intvl;
571 u16 capa;
572 int chan_no = -1;
573 const u8 *ssid = NULL;
574 u8 ssid_len = 0;
575 DECLARE_SSID_BUF(ssid_buf);
576
577 int len = get_unaligned_le16(pos);
578 pos += 2;
579
580 /* BSSID */
581 bssid = pos;
582 pos += ETH_ALEN;
583 /* RSSI */
584 rssi = *pos++;
585 /* Packet time stamp */
586 pos += 8;
587 /* Beacon interval */
588 intvl = get_unaligned_le16(pos);
589 pos += 2;
590 /* Capabilities */
591 capa = get_unaligned_le16(pos);
592 pos += 2;
593
594 /* To find out the channel, we must parse the IEs */
595 ie = pos;
596 /*
597 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
598 * interval, capabilities
599 */
600 ielen = left = len - (6 + 1 + 8 + 2 + 2);
601 while (left >= 2) {
602 u8 id, elen;
603 id = *pos++;
604 elen = *pos++;
605 left -= 2;
606 if (elen > left || elen == 0) {
607 lbs_deb_scan("scan response: invalid IE fmt\n");
608 goto done;
609 }
610
611 if (id == WLAN_EID_DS_PARAMS)
612 chan_no = *pos;
613 if (id == WLAN_EID_SSID) {
614 ssid = pos;
615 ssid_len = elen;
616 }
617 left -= elen;
618 pos += elen;
619 }
620
621 /* No channel, no luck */
622 if (chan_no != -1) {
623 struct wiphy *wiphy = priv->wdev->wiphy;
624 int freq = ieee80211_channel_to_frequency(chan_no,
625 IEEE80211_BAND_2GHZ);
626 struct ieee80211_channel *channel =
627 ieee80211_get_channel(wiphy, freq);
628
629 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
630 "%d dBm\n",
631 bssid, capa, chan_no,
632 print_ssid(ssid_buf, ssid, ssid_len),
633 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
634
635 if (channel &&
636 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
637 bss = cfg80211_inform_bss(wiphy, channel,
638 bssid, get_unaligned_le64(tsfdesc),
639 capa, intvl, ie, ielen,
640 LBS_SCAN_RSSI_TO_MBM(rssi),
641 GFP_KERNEL);
642 cfg80211_put_bss(bss);
643 }
644 } else
645 lbs_deb_scan("scan response: missing BSS channel IE\n");
646
647 tsfdesc += 8;
648 }
649 ret = 0;
650
651 done:
652 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
653 return ret;
654 }
655
656
657 /*
658 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
659 * TLV and a rates TLV. Determine the maximum size of them:
660 */
661 #define LBS_SCAN_MAX_CMD_SIZE \
662 (sizeof(struct cmd_ds_802_11_scan) \
663 + LBS_MAX_SSID_TLV_SIZE \
664 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
665 + LBS_MAX_RATES_TLV_SIZE)
666
667 /*
668 * Assumes priv->scan_req is initialized and valid
669 * Assumes priv->scan_channel is initialized
670 */
lbs_scan_worker(struct work_struct * work)671 static void lbs_scan_worker(struct work_struct *work)
672 {
673 struct lbs_private *priv =
674 container_of(work, struct lbs_private, scan_work.work);
675 struct cmd_ds_802_11_scan *scan_cmd;
676 u8 *tlv; /* pointer into our current, growing TLV storage area */
677 int last_channel;
678 int running, carrier;
679
680 lbs_deb_enter(LBS_DEB_SCAN);
681
682 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
683 if (scan_cmd == NULL)
684 goto out_no_scan_cmd;
685
686 /* prepare fixed part of scan command */
687 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
688
689 /* stop network while we're away from our main channel */
690 running = !netif_queue_stopped(priv->dev);
691 carrier = netif_carrier_ok(priv->dev);
692 if (running)
693 netif_stop_queue(priv->dev);
694 if (carrier)
695 netif_carrier_off(priv->dev);
696
697 /* prepare fixed part of scan command */
698 tlv = scan_cmd->tlvbuffer;
699
700 /* add SSID TLV */
701 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
702 tlv += lbs_add_ssid_tlv(tlv,
703 priv->scan_req->ssids[0].ssid,
704 priv->scan_req->ssids[0].ssid_len);
705
706 /* add channel TLVs */
707 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
708 if (last_channel > priv->scan_req->n_channels)
709 last_channel = priv->scan_req->n_channels;
710 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
711 priv->scan_req->n_ssids);
712
713 /* add rates TLV */
714 tlv += lbs_add_supported_rates_tlv(tlv);
715
716 if (priv->scan_channel < priv->scan_req->n_channels) {
717 cancel_delayed_work(&priv->scan_work);
718 if (netif_running(priv->dev))
719 queue_delayed_work(priv->work_thread, &priv->scan_work,
720 msecs_to_jiffies(300));
721 }
722
723 /* This is the final data we are about to send */
724 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
725 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
726 sizeof(*scan_cmd));
727 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
728 tlv - scan_cmd->tlvbuffer);
729
730 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
731 le16_to_cpu(scan_cmd->hdr.size),
732 lbs_ret_scan, 0);
733
734 if (priv->scan_channel >= priv->scan_req->n_channels) {
735 /* Mark scan done */
736 cancel_delayed_work(&priv->scan_work);
737 lbs_scan_done(priv);
738 }
739
740 /* Restart network */
741 if (carrier)
742 netif_carrier_on(priv->dev);
743 if (running && !priv->tx_pending_len)
744 netif_wake_queue(priv->dev);
745
746 kfree(scan_cmd);
747
748 /* Wake up anything waiting on scan completion */
749 if (priv->scan_req == NULL) {
750 lbs_deb_scan("scan: waking up waiters\n");
751 wake_up_all(&priv->scan_q);
752 }
753
754 out_no_scan_cmd:
755 lbs_deb_leave(LBS_DEB_SCAN);
756 }
757
_internal_start_scan(struct lbs_private * priv,bool internal,struct cfg80211_scan_request * request)758 static void _internal_start_scan(struct lbs_private *priv, bool internal,
759 struct cfg80211_scan_request *request)
760 {
761 lbs_deb_enter(LBS_DEB_CFG80211);
762
763 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
764 request->n_ssids, request->n_channels, request->ie_len);
765
766 priv->scan_channel = 0;
767 priv->scan_req = request;
768 priv->internal_scan = internal;
769
770 queue_delayed_work(priv->work_thread, &priv->scan_work,
771 msecs_to_jiffies(50));
772
773 lbs_deb_leave(LBS_DEB_CFG80211);
774 }
775
776 /*
777 * Clean up priv->scan_req. Should be used to handle the allocation details.
778 */
lbs_scan_done(struct lbs_private * priv)779 void lbs_scan_done(struct lbs_private *priv)
780 {
781 WARN_ON(!priv->scan_req);
782
783 if (priv->internal_scan)
784 kfree(priv->scan_req);
785 else
786 cfg80211_scan_done(priv->scan_req, false);
787
788 priv->scan_req = NULL;
789 }
790
lbs_cfg_scan(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_scan_request * request)791 static int lbs_cfg_scan(struct wiphy *wiphy,
792 struct net_device *dev,
793 struct cfg80211_scan_request *request)
794 {
795 struct lbs_private *priv = wiphy_priv(wiphy);
796 int ret = 0;
797
798 lbs_deb_enter(LBS_DEB_CFG80211);
799
800 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
801 /* old scan request not yet processed */
802 ret = -EAGAIN;
803 goto out;
804 }
805
806 _internal_start_scan(priv, false, request);
807
808 if (priv->surpriseremoved)
809 ret = -EIO;
810
811 out:
812 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
813 return ret;
814 }
815
816
817
818
819 /*
820 * Events
821 */
822
lbs_send_disconnect_notification(struct lbs_private * priv)823 void lbs_send_disconnect_notification(struct lbs_private *priv)
824 {
825 lbs_deb_enter(LBS_DEB_CFG80211);
826
827 cfg80211_disconnected(priv->dev,
828 0,
829 NULL, 0,
830 GFP_KERNEL);
831
832 lbs_deb_leave(LBS_DEB_CFG80211);
833 }
834
lbs_send_mic_failureevent(struct lbs_private * priv,u32 event)835 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
836 {
837 lbs_deb_enter(LBS_DEB_CFG80211);
838
839 cfg80211_michael_mic_failure(priv->dev,
840 priv->assoc_bss,
841 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
842 NL80211_KEYTYPE_GROUP :
843 NL80211_KEYTYPE_PAIRWISE,
844 -1,
845 NULL,
846 GFP_KERNEL);
847
848 lbs_deb_leave(LBS_DEB_CFG80211);
849 }
850
851
852
853
854 /*
855 * Connect/disconnect
856 */
857
858
859 /*
860 * This removes all WEP keys
861 */
lbs_remove_wep_keys(struct lbs_private * priv)862 static int lbs_remove_wep_keys(struct lbs_private *priv)
863 {
864 struct cmd_ds_802_11_set_wep cmd;
865 int ret;
866
867 lbs_deb_enter(LBS_DEB_CFG80211);
868
869 memset(&cmd, 0, sizeof(cmd));
870 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
871 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
872 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
873
874 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
875
876 lbs_deb_leave(LBS_DEB_CFG80211);
877 return ret;
878 }
879
880 /*
881 * Set WEP keys
882 */
lbs_set_wep_keys(struct lbs_private * priv)883 static int lbs_set_wep_keys(struct lbs_private *priv)
884 {
885 struct cmd_ds_802_11_set_wep cmd;
886 int i;
887 int ret;
888
889 lbs_deb_enter(LBS_DEB_CFG80211);
890
891 /*
892 * command 13 00
893 * size 50 00
894 * sequence xx xx
895 * result 00 00
896 * action 02 00 ACT_ADD
897 * transmit key 00 00
898 * type for key 1 01 WEP40
899 * type for key 2 00
900 * type for key 3 00
901 * type for key 4 00
902 * key 1 39 39 39 39 39 00 00 00
903 * 00 00 00 00 00 00 00 00
904 * key 2 00 00 00 00 00 00 00 00
905 * 00 00 00 00 00 00 00 00
906 * key 3 00 00 00 00 00 00 00 00
907 * 00 00 00 00 00 00 00 00
908 * key 4 00 00 00 00 00 00 00 00
909 */
910 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
911 priv->wep_key_len[2] || priv->wep_key_len[3]) {
912 /* Only set wep keys if we have at least one of them */
913 memset(&cmd, 0, sizeof(cmd));
914 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
915 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
916 cmd.action = cpu_to_le16(CMD_ACT_ADD);
917
918 for (i = 0; i < 4; i++) {
919 switch (priv->wep_key_len[i]) {
920 case WLAN_KEY_LEN_WEP40:
921 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
922 break;
923 case WLAN_KEY_LEN_WEP104:
924 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
925 break;
926 default:
927 cmd.keytype[i] = 0;
928 break;
929 }
930 memcpy(cmd.keymaterial[i], priv->wep_key[i],
931 priv->wep_key_len[i]);
932 }
933
934 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
935 } else {
936 /* Otherwise remove all wep keys */
937 ret = lbs_remove_wep_keys(priv);
938 }
939
940 lbs_deb_leave(LBS_DEB_CFG80211);
941 return ret;
942 }
943
944
945 /*
946 * Enable/Disable RSN status
947 */
lbs_enable_rsn(struct lbs_private * priv,int enable)948 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
949 {
950 struct cmd_ds_802_11_enable_rsn cmd;
951 int ret;
952
953 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
954
955 /*
956 * cmd 2f 00
957 * size 0c 00
958 * sequence xx xx
959 * result 00 00
960 * action 01 00 ACT_SET
961 * enable 01 00
962 */
963 memset(&cmd, 0, sizeof(cmd));
964 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
965 cmd.action = cpu_to_le16(CMD_ACT_SET);
966 cmd.enable = cpu_to_le16(enable);
967
968 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
969
970 lbs_deb_leave(LBS_DEB_CFG80211);
971 return ret;
972 }
973
974
975 /*
976 * Set WPA/WPA key material
977 */
978
979 /*
980 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
981 * get rid of WEXT, this should go into host.h
982 */
983
984 struct cmd_key_material {
985 struct cmd_header hdr;
986
987 __le16 action;
988 struct MrvlIEtype_keyParamSet param;
989 } __packed;
990
lbs_set_key_material(struct lbs_private * priv,int key_type,int key_info,u8 * key,u16 key_len)991 static int lbs_set_key_material(struct lbs_private *priv,
992 int key_type,
993 int key_info,
994 u8 *key, u16 key_len)
995 {
996 struct cmd_key_material cmd;
997 int ret;
998
999 lbs_deb_enter(LBS_DEB_CFG80211);
1000
1001 /*
1002 * Example for WPA (TKIP):
1003 *
1004 * cmd 5e 00
1005 * size 34 00
1006 * sequence xx xx
1007 * result 00 00
1008 * action 01 00
1009 * TLV type 00 01 key param
1010 * length 00 26
1011 * key type 01 00 TKIP
1012 * key info 06 00 UNICAST | ENABLED
1013 * key len 20 00
1014 * key 32 bytes
1015 */
1016 memset(&cmd, 0, sizeof(cmd));
1017 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1018 cmd.action = cpu_to_le16(CMD_ACT_SET);
1019 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1020 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1021 cmd.param.keytypeid = cpu_to_le16(key_type);
1022 cmd.param.keyinfo = cpu_to_le16(key_info);
1023 cmd.param.keylen = cpu_to_le16(key_len);
1024 if (key && key_len)
1025 memcpy(cmd.param.key, key, key_len);
1026
1027 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1028
1029 lbs_deb_leave(LBS_DEB_CFG80211);
1030 return ret;
1031 }
1032
1033
1034 /*
1035 * Sets the auth type (open, shared, etc) in the firmware. That
1036 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1037 * command doesn't send an authentication frame at all, it just
1038 * stores the auth_type.
1039 */
lbs_set_authtype(struct lbs_private * priv,struct cfg80211_connect_params * sme)1040 static int lbs_set_authtype(struct lbs_private *priv,
1041 struct cfg80211_connect_params *sme)
1042 {
1043 struct cmd_ds_802_11_authenticate cmd;
1044 int ret;
1045
1046 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1047
1048 /*
1049 * cmd 11 00
1050 * size 19 00
1051 * sequence xx xx
1052 * result 00 00
1053 * BSS id 00 13 19 80 da 30
1054 * auth type 00
1055 * reserved 00 00 00 00 00 00 00 00 00 00
1056 */
1057 memset(&cmd, 0, sizeof(cmd));
1058 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1059 if (sme->bssid)
1060 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1061 /* convert auth_type */
1062 ret = lbs_auth_to_authtype(sme->auth_type);
1063 if (ret < 0)
1064 goto done;
1065
1066 cmd.authtype = ret;
1067 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1068
1069 done:
1070 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1071 return ret;
1072 }
1073
1074
1075 /*
1076 * Create association request
1077 */
1078 #define LBS_ASSOC_MAX_CMD_SIZE \
1079 (sizeof(struct cmd_ds_802_11_associate) \
1080 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1081 + LBS_MAX_SSID_TLV_SIZE \
1082 + LBS_MAX_CHANNEL_TLV_SIZE \
1083 + LBS_MAX_CF_PARAM_TLV_SIZE \
1084 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1085 + LBS_MAX_WPA_TLV_SIZE)
1086
lbs_associate(struct lbs_private * priv,struct cfg80211_bss * bss,struct cfg80211_connect_params * sme)1087 static int lbs_associate(struct lbs_private *priv,
1088 struct cfg80211_bss *bss,
1089 struct cfg80211_connect_params *sme)
1090 {
1091 struct cmd_ds_802_11_associate_response *resp;
1092 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1093 GFP_KERNEL);
1094 const u8 *ssid_eid;
1095 size_t len, resp_ie_len;
1096 int status;
1097 int ret;
1098 u8 *pos = &(cmd->iebuf[0]);
1099 u8 *tmp;
1100
1101 lbs_deb_enter(LBS_DEB_CFG80211);
1102
1103 if (!cmd) {
1104 ret = -ENOMEM;
1105 goto done;
1106 }
1107
1108 /*
1109 * cmd 50 00
1110 * length 34 00
1111 * sequence xx xx
1112 * result 00 00
1113 * BSS id 00 13 19 80 da 30
1114 * capabilities 11 00
1115 * listen interval 0a 00
1116 * beacon interval 00 00
1117 * DTIM period 00
1118 * TLVs xx (up to 512 bytes)
1119 */
1120 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1121
1122 /* Fill in static fields */
1123 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1124 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1125 cmd->capability = cpu_to_le16(bss->capability);
1126
1127 /* add SSID TLV */
1128 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1129 if (ssid_eid)
1130 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1131 else
1132 lbs_deb_assoc("no SSID\n");
1133
1134 /* add DS param TLV */
1135 if (bss->channel)
1136 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1137 else
1138 lbs_deb_assoc("no channel\n");
1139
1140 /* add (empty) CF param TLV */
1141 pos += lbs_add_cf_param_tlv(pos);
1142
1143 /* add rates TLV */
1144 tmp = pos + 4; /* skip Marvell IE header */
1145 pos += lbs_add_common_rates_tlv(pos, bss);
1146 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1147
1148 /* add auth type TLV */
1149 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1150 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1151
1152 /* add WPA/WPA2 TLV */
1153 if (sme->ie && sme->ie_len)
1154 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1155
1156 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1157 (u16)(pos - (u8 *) &cmd->iebuf);
1158 cmd->hdr.size = cpu_to_le16(len);
1159
1160 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1161 le16_to_cpu(cmd->hdr.size));
1162
1163 /* store for later use */
1164 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1165
1166 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1167 if (ret)
1168 goto done;
1169
1170 /* generate connect message to cfg80211 */
1171
1172 resp = (void *) cmd; /* recast for easier field access */
1173 status = le16_to_cpu(resp->statuscode);
1174
1175 /* Older FW versions map the IEEE 802.11 Status Code in the association
1176 * response to the following values returned in resp->statuscode:
1177 *
1178 * IEEE Status Code Marvell Status Code
1179 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1180 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1181 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1182 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1183 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1184 * others -> 0x0003 ASSOC_RESULT_REFUSED
1185 *
1186 * Other response codes:
1187 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1188 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1189 * association response from the AP)
1190 */
1191 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1192 switch (status) {
1193 case 0:
1194 break;
1195 case 1:
1196 lbs_deb_assoc("invalid association parameters\n");
1197 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1198 break;
1199 case 2:
1200 lbs_deb_assoc("timer expired while waiting for AP\n");
1201 status = WLAN_STATUS_AUTH_TIMEOUT;
1202 break;
1203 case 3:
1204 lbs_deb_assoc("association refused by AP\n");
1205 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1206 break;
1207 case 4:
1208 lbs_deb_assoc("authentication refused by AP\n");
1209 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1210 break;
1211 default:
1212 lbs_deb_assoc("association failure %d\n", status);
1213 /* v5 OLPC firmware does return the AP status code if
1214 * it's not one of the values above. Let that through.
1215 */
1216 break;
1217 }
1218 }
1219
1220 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1221 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1222 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1223
1224 resp_ie_len = le16_to_cpu(resp->hdr.size)
1225 - sizeof(resp->hdr)
1226 - 6;
1227 cfg80211_connect_result(priv->dev,
1228 priv->assoc_bss,
1229 sme->ie, sme->ie_len,
1230 resp->iebuf, resp_ie_len,
1231 status,
1232 GFP_KERNEL);
1233
1234 if (status == 0) {
1235 /* TODO: get rid of priv->connect_status */
1236 priv->connect_status = LBS_CONNECTED;
1237 netif_carrier_on(priv->dev);
1238 if (!priv->tx_pending_len)
1239 netif_tx_wake_all_queues(priv->dev);
1240 }
1241
1242 done:
1243 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1244 return ret;
1245 }
1246
1247 static struct cfg80211_scan_request *
_new_connect_scan_req(struct wiphy * wiphy,struct cfg80211_connect_params * sme)1248 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1249 {
1250 struct cfg80211_scan_request *creq = NULL;
1251 int i, n_channels = 0;
1252 enum ieee80211_band band;
1253
1254 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1255 if (wiphy->bands[band])
1256 n_channels += wiphy->bands[band]->n_channels;
1257 }
1258
1259 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1260 n_channels * sizeof(void *),
1261 GFP_ATOMIC);
1262 if (!creq)
1263 return NULL;
1264
1265 /* SSIDs come after channels */
1266 creq->ssids = (void *)&creq->channels[n_channels];
1267 creq->n_channels = n_channels;
1268 creq->n_ssids = 1;
1269
1270 /* Scan all available channels */
1271 i = 0;
1272 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1273 int j;
1274
1275 if (!wiphy->bands[band])
1276 continue;
1277
1278 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1279 /* ignore disabled channels */
1280 if (wiphy->bands[band]->channels[j].flags &
1281 IEEE80211_CHAN_DISABLED)
1282 continue;
1283
1284 creq->channels[i] = &wiphy->bands[band]->channels[j];
1285 i++;
1286 }
1287 }
1288 if (i) {
1289 /* Set real number of channels specified in creq->channels[] */
1290 creq->n_channels = i;
1291
1292 /* Scan for the SSID we're going to connect to */
1293 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1294 creq->ssids[0].ssid_len = sme->ssid_len;
1295 } else {
1296 /* No channels found... */
1297 kfree(creq);
1298 creq = NULL;
1299 }
1300
1301 return creq;
1302 }
1303
lbs_cfg_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)1304 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1305 struct cfg80211_connect_params *sme)
1306 {
1307 struct lbs_private *priv = wiphy_priv(wiphy);
1308 struct cfg80211_bss *bss = NULL;
1309 int ret = 0;
1310 u8 preamble = RADIO_PREAMBLE_SHORT;
1311
1312 if (dev == priv->mesh_dev)
1313 return -EOPNOTSUPP;
1314
1315 lbs_deb_enter(LBS_DEB_CFG80211);
1316
1317 if (!sme->bssid) {
1318 struct cfg80211_scan_request *creq;
1319
1320 /*
1321 * Scan for the requested network after waiting for existing
1322 * scans to finish.
1323 */
1324 lbs_deb_assoc("assoc: waiting for existing scans\n");
1325 wait_event_interruptible_timeout(priv->scan_q,
1326 (priv->scan_req == NULL),
1327 (15 * HZ));
1328
1329 creq = _new_connect_scan_req(wiphy, sme);
1330 if (!creq) {
1331 ret = -EINVAL;
1332 goto done;
1333 }
1334
1335 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1336 _internal_start_scan(priv, true, creq);
1337
1338 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1339 wait_event_interruptible_timeout(priv->scan_q,
1340 (priv->scan_req == NULL),
1341 (15 * HZ));
1342 lbs_deb_assoc("assoc: scanning competed\n");
1343 }
1344
1345 /* Find the BSS we want using available scan results */
1346 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1347 sme->ssid, sme->ssid_len,
1348 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1349 if (!bss) {
1350 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1351 sme->bssid);
1352 ret = -ENOENT;
1353 goto done;
1354 }
1355 lbs_deb_assoc("trying %pM\n", bss->bssid);
1356 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1357 sme->crypto.cipher_group,
1358 sme->key_idx, sme->key_len);
1359
1360 /* As this is a new connection, clear locally stored WEP keys */
1361 priv->wep_tx_key = 0;
1362 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1363 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1364
1365 /* set/remove WEP keys */
1366 switch (sme->crypto.cipher_group) {
1367 case WLAN_CIPHER_SUITE_WEP40:
1368 case WLAN_CIPHER_SUITE_WEP104:
1369 /* Store provided WEP keys in priv-> */
1370 priv->wep_tx_key = sme->key_idx;
1371 priv->wep_key_len[sme->key_idx] = sme->key_len;
1372 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1373 /* Set WEP keys and WEP mode */
1374 lbs_set_wep_keys(priv);
1375 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1376 lbs_set_mac_control(priv);
1377 /* No RSN mode for WEP */
1378 lbs_enable_rsn(priv, 0);
1379 break;
1380 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1381 /*
1382 * If we don't have no WEP, no WPA and no WPA2,
1383 * we remove all keys like in the WPA/WPA2 setup,
1384 * we just don't set RSN.
1385 *
1386 * Therefore: fall-through
1387 */
1388 case WLAN_CIPHER_SUITE_TKIP:
1389 case WLAN_CIPHER_SUITE_CCMP:
1390 /* Remove WEP keys and WEP mode */
1391 lbs_remove_wep_keys(priv);
1392 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1393 lbs_set_mac_control(priv);
1394
1395 /* clear the WPA/WPA2 keys */
1396 lbs_set_key_material(priv,
1397 KEY_TYPE_ID_WEP, /* doesn't matter */
1398 KEY_INFO_WPA_UNICAST,
1399 NULL, 0);
1400 lbs_set_key_material(priv,
1401 KEY_TYPE_ID_WEP, /* doesn't matter */
1402 KEY_INFO_WPA_MCAST,
1403 NULL, 0);
1404 /* RSN mode for WPA/WPA2 */
1405 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1406 break;
1407 default:
1408 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1409 sme->crypto.cipher_group);
1410 ret = -ENOTSUPP;
1411 goto done;
1412 }
1413
1414 ret = lbs_set_authtype(priv, sme);
1415 if (ret == -ENOTSUPP) {
1416 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1417 goto done;
1418 }
1419
1420 lbs_set_radio(priv, preamble, 1);
1421
1422 /* Do the actual association */
1423 ret = lbs_associate(priv, bss, sme);
1424
1425 done:
1426 if (bss)
1427 cfg80211_put_bss(bss);
1428 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1429 return ret;
1430 }
1431
lbs_disconnect(struct lbs_private * priv,u16 reason)1432 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1433 {
1434 struct cmd_ds_802_11_deauthenticate cmd;
1435 int ret;
1436
1437 memset(&cmd, 0, sizeof(cmd));
1438 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1439 /* Mildly ugly to use a locally store my own BSSID ... */
1440 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1441 cmd.reasoncode = cpu_to_le16(reason);
1442
1443 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1444 if (ret)
1445 return ret;
1446
1447 cfg80211_disconnected(priv->dev,
1448 reason,
1449 NULL, 0,
1450 GFP_KERNEL);
1451 priv->connect_status = LBS_DISCONNECTED;
1452
1453 return 0;
1454 }
1455
lbs_cfg_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)1456 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1457 u16 reason_code)
1458 {
1459 struct lbs_private *priv = wiphy_priv(wiphy);
1460
1461 if (dev == priv->mesh_dev)
1462 return -EOPNOTSUPP;
1463
1464 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1465
1466 /* store for lbs_cfg_ret_disconnect() */
1467 priv->disassoc_reason = reason_code;
1468
1469 return lbs_disconnect(priv, reason_code);
1470 }
1471
lbs_cfg_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)1472 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1473 struct net_device *netdev,
1474 u8 key_index, bool unicast,
1475 bool multicast)
1476 {
1477 struct lbs_private *priv = wiphy_priv(wiphy);
1478
1479 if (netdev == priv->mesh_dev)
1480 return -EOPNOTSUPP;
1481
1482 lbs_deb_enter(LBS_DEB_CFG80211);
1483
1484 if (key_index != priv->wep_tx_key) {
1485 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1486 priv->wep_tx_key = key_index;
1487 lbs_set_wep_keys(priv);
1488 }
1489
1490 return 0;
1491 }
1492
1493
lbs_cfg_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 idx,bool pairwise,const u8 * mac_addr,struct key_params * params)1494 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1495 u8 idx, bool pairwise, const u8 *mac_addr,
1496 struct key_params *params)
1497 {
1498 struct lbs_private *priv = wiphy_priv(wiphy);
1499 u16 key_info;
1500 u16 key_type;
1501 int ret = 0;
1502
1503 if (netdev == priv->mesh_dev)
1504 return -EOPNOTSUPP;
1505
1506 lbs_deb_enter(LBS_DEB_CFG80211);
1507
1508 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1509 params->cipher, mac_addr);
1510 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1511 idx, params->key_len);
1512 if (params->key_len)
1513 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1514 params->key, params->key_len);
1515
1516 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1517 if (params->seq_len)
1518 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1519 params->seq, params->seq_len);
1520
1521 switch (params->cipher) {
1522 case WLAN_CIPHER_SUITE_WEP40:
1523 case WLAN_CIPHER_SUITE_WEP104:
1524 /* actually compare if something has changed ... */
1525 if ((priv->wep_key_len[idx] != params->key_len) ||
1526 memcmp(priv->wep_key[idx],
1527 params->key, params->key_len) != 0) {
1528 priv->wep_key_len[idx] = params->key_len;
1529 memcpy(priv->wep_key[idx],
1530 params->key, params->key_len);
1531 lbs_set_wep_keys(priv);
1532 }
1533 break;
1534 case WLAN_CIPHER_SUITE_TKIP:
1535 case WLAN_CIPHER_SUITE_CCMP:
1536 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1537 ? KEY_INFO_WPA_UNICAST
1538 : KEY_INFO_WPA_MCAST);
1539 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1540 ? KEY_TYPE_ID_TKIP
1541 : KEY_TYPE_ID_AES;
1542 lbs_set_key_material(priv,
1543 key_type,
1544 key_info,
1545 params->key, params->key_len);
1546 break;
1547 default:
1548 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1549 ret = -ENOTSUPP;
1550 break;
1551 }
1552
1553 return ret;
1554 }
1555
1556
lbs_cfg_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)1557 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1558 u8 key_index, bool pairwise, const u8 *mac_addr)
1559 {
1560
1561 lbs_deb_enter(LBS_DEB_CFG80211);
1562
1563 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1564 key_index, mac_addr);
1565
1566 #ifdef TODO
1567 struct lbs_private *priv = wiphy_priv(wiphy);
1568 /*
1569 * I think can keep this a NO-OP, because:
1570
1571 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1572 * - neither "iw" nor "wpa_supplicant" won't call this during
1573 * an ongoing connection
1574 * - TODO: but I have to check if this is still true when
1575 * I set the AP to periodic re-keying
1576 * - we've not kzallec() something when we've added a key at
1577 * lbs_cfg_connect() or lbs_cfg_add_key().
1578 *
1579 * This causes lbs_cfg_del_key() only called at disconnect time,
1580 * where we'd just waste time deleting a key that is not going
1581 * to be used anyway.
1582 */
1583 if (key_index < 3 && priv->wep_key_len[key_index]) {
1584 priv->wep_key_len[key_index] = 0;
1585 lbs_set_wep_keys(priv);
1586 }
1587 #endif
1588
1589 return 0;
1590 }
1591
1592
1593 /*
1594 * Get station
1595 */
1596
lbs_cfg_get_station(struct wiphy * wiphy,struct net_device * dev,u8 * mac,struct station_info * sinfo)1597 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1598 u8 *mac, struct station_info *sinfo)
1599 {
1600 struct lbs_private *priv = wiphy_priv(wiphy);
1601 s8 signal, noise;
1602 int ret;
1603 size_t i;
1604
1605 lbs_deb_enter(LBS_DEB_CFG80211);
1606
1607 sinfo->filled |= STATION_INFO_TX_BYTES |
1608 STATION_INFO_TX_PACKETS |
1609 STATION_INFO_RX_BYTES |
1610 STATION_INFO_RX_PACKETS;
1611 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1612 sinfo->tx_packets = priv->dev->stats.tx_packets;
1613 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1614 sinfo->rx_packets = priv->dev->stats.rx_packets;
1615
1616 /* Get current RSSI */
1617 ret = lbs_get_rssi(priv, &signal, &noise);
1618 if (ret == 0) {
1619 sinfo->signal = signal;
1620 sinfo->filled |= STATION_INFO_SIGNAL;
1621 }
1622
1623 /* Convert priv->cur_rate from hw_value to NL80211 value */
1624 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1625 if (priv->cur_rate == lbs_rates[i].hw_value) {
1626 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1627 sinfo->filled |= STATION_INFO_TX_BITRATE;
1628 break;
1629 }
1630 }
1631
1632 return 0;
1633 }
1634
1635
1636
1637
1638 /*
1639 * Change interface
1640 */
1641
lbs_change_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1642 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1643 enum nl80211_iftype type, u32 *flags,
1644 struct vif_params *params)
1645 {
1646 struct lbs_private *priv = wiphy_priv(wiphy);
1647 int ret = 0;
1648
1649 if (dev == priv->mesh_dev)
1650 return -EOPNOTSUPP;
1651
1652 switch (type) {
1653 case NL80211_IFTYPE_MONITOR:
1654 case NL80211_IFTYPE_STATION:
1655 case NL80211_IFTYPE_ADHOC:
1656 break;
1657 default:
1658 return -EOPNOTSUPP;
1659 }
1660
1661 lbs_deb_enter(LBS_DEB_CFG80211);
1662
1663 if (priv->iface_running)
1664 ret = lbs_set_iface_type(priv, type);
1665
1666 if (!ret)
1667 priv->wdev->iftype = type;
1668
1669 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1670 return ret;
1671 }
1672
1673
1674
1675 /*
1676 * IBSS (Ad-Hoc)
1677 */
1678
1679 /*
1680 * The firmware needs the following bits masked out of the beacon-derived
1681 * capability field when associating/joining to a BSS:
1682 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1683 */
1684 #define CAPINFO_MASK (~(0xda00))
1685
1686
lbs_join_post(struct lbs_private * priv,struct cfg80211_ibss_params * params,u8 * bssid,u16 capability)1687 static void lbs_join_post(struct lbs_private *priv,
1688 struct cfg80211_ibss_params *params,
1689 u8 *bssid, u16 capability)
1690 {
1691 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1692 2 + 4 + /* basic rates */
1693 2 + 1 + /* DS parameter */
1694 2 + 2 + /* atim */
1695 2 + 8]; /* extended rates */
1696 u8 *fake = fake_ie;
1697 struct cfg80211_bss *bss;
1698
1699 lbs_deb_enter(LBS_DEB_CFG80211);
1700
1701 /*
1702 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1703 * the real IE from the firmware. So we fabricate a fake IE based on
1704 * what the firmware actually sends (sniffed with wireshark).
1705 */
1706 /* Fake SSID IE */
1707 *fake++ = WLAN_EID_SSID;
1708 *fake++ = params->ssid_len;
1709 memcpy(fake, params->ssid, params->ssid_len);
1710 fake += params->ssid_len;
1711 /* Fake supported basic rates IE */
1712 *fake++ = WLAN_EID_SUPP_RATES;
1713 *fake++ = 4;
1714 *fake++ = 0x82;
1715 *fake++ = 0x84;
1716 *fake++ = 0x8b;
1717 *fake++ = 0x96;
1718 /* Fake DS channel IE */
1719 *fake++ = WLAN_EID_DS_PARAMS;
1720 *fake++ = 1;
1721 *fake++ = params->channel->hw_value;
1722 /* Fake IBSS params IE */
1723 *fake++ = WLAN_EID_IBSS_PARAMS;
1724 *fake++ = 2;
1725 *fake++ = 0; /* ATIM=0 */
1726 *fake++ = 0;
1727 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1728 * but I don't know how this could be checked */
1729 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1730 *fake++ = 8;
1731 *fake++ = 0x0c;
1732 *fake++ = 0x12;
1733 *fake++ = 0x18;
1734 *fake++ = 0x24;
1735 *fake++ = 0x30;
1736 *fake++ = 0x48;
1737 *fake++ = 0x60;
1738 *fake++ = 0x6c;
1739 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1740
1741 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1742 params->channel,
1743 bssid,
1744 0,
1745 capability,
1746 params->beacon_interval,
1747 fake_ie, fake - fake_ie,
1748 0, GFP_KERNEL);
1749 cfg80211_put_bss(bss);
1750
1751 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1752 priv->wdev->ssid_len = params->ssid_len;
1753
1754 cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1755
1756 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1757 priv->connect_status = LBS_CONNECTED;
1758 netif_carrier_on(priv->dev);
1759 if (!priv->tx_pending_len)
1760 netif_wake_queue(priv->dev);
1761
1762 lbs_deb_leave(LBS_DEB_CFG80211);
1763 }
1764
lbs_ibss_join_existing(struct lbs_private * priv,struct cfg80211_ibss_params * params,struct cfg80211_bss * bss)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 = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1770 struct cmd_ds_802_11_ad_hoc_join cmd;
1771 u8 preamble = RADIO_PREAMBLE_SHORT;
1772 int ret = 0;
1773
1774 lbs_deb_enter(LBS_DEB_CFG80211);
1775
1776 /* TODO: set preamble based on scan result */
1777 ret = lbs_set_radio(priv, preamble, 1);
1778 if (ret)
1779 goto out;
1780
1781 /*
1782 * Example CMD_802_11_AD_HOC_JOIN command:
1783 *
1784 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1785 * size 65 00
1786 * sequence xx xx
1787 * result 00 00
1788 * bssid 02 27 27 97 2f 96
1789 * ssid 49 42 53 53 00 00 00 00
1790 * 00 00 00 00 00 00 00 00
1791 * 00 00 00 00 00 00 00 00
1792 * 00 00 00 00 00 00 00 00
1793 * type 02 CMD_BSS_TYPE_IBSS
1794 * beacon period 64 00
1795 * dtim period 00
1796 * timestamp 00 00 00 00 00 00 00 00
1797 * localtime 00 00 00 00 00 00 00 00
1798 * IE DS 03
1799 * IE DS len 01
1800 * IE DS channel 01
1801 * reserveed 00 00 00 00
1802 * IE IBSS 06
1803 * IE IBSS len 02
1804 * IE IBSS atim 00 00
1805 * reserved 00 00 00 00
1806 * capability 02 00
1807 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1808 * fail timeout ff 00
1809 * probe delay 00 00
1810 */
1811 memset(&cmd, 0, sizeof(cmd));
1812 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1813
1814 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1815 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1816 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1817 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1818 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1819 cmd.bss.ds.header.len = 1;
1820 cmd.bss.ds.channel = params->channel->hw_value;
1821 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1822 cmd.bss.ibss.header.len = 2;
1823 cmd.bss.ibss.atimwindow = 0;
1824 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1825
1826 /* set rates to the intersection of our rates and the rates in the
1827 bss */
1828 if (!rates_eid) {
1829 lbs_add_rates(cmd.bss.rates);
1830 } else {
1831 int hw, i;
1832 u8 rates_max = rates_eid[1];
1833 u8 *rates = cmd.bss.rates;
1834 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1835 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1836 for (i = 0; i < rates_max; i++) {
1837 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1838 u8 rate = rates_eid[i+2];
1839 if (rate == 0x02 || rate == 0x04 ||
1840 rate == 0x0b || rate == 0x16)
1841 rate |= 0x80;
1842 *rates++ = rate;
1843 }
1844 }
1845 }
1846 }
1847
1848 /* Only v8 and below support setting this */
1849 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1850 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1851 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1852 }
1853 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1854 if (ret)
1855 goto out;
1856
1857 /*
1858 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1859 *
1860 * response 2c 80
1861 * size 09 00
1862 * sequence xx xx
1863 * result 00 00
1864 * reserved 00
1865 */
1866 lbs_join_post(priv, params, bss->bssid, bss->capability);
1867
1868 out:
1869 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1870 return ret;
1871 }
1872
1873
1874
lbs_ibss_start_new(struct lbs_private * priv,struct cfg80211_ibss_params * params)1875 static int lbs_ibss_start_new(struct lbs_private *priv,
1876 struct cfg80211_ibss_params *params)
1877 {
1878 struct cmd_ds_802_11_ad_hoc_start cmd;
1879 struct cmd_ds_802_11_ad_hoc_result *resp =
1880 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1881 u8 preamble = RADIO_PREAMBLE_SHORT;
1882 int ret = 0;
1883 u16 capability;
1884
1885 lbs_deb_enter(LBS_DEB_CFG80211);
1886
1887 ret = lbs_set_radio(priv, preamble, 1);
1888 if (ret)
1889 goto out;
1890
1891 /*
1892 * Example CMD_802_11_AD_HOC_START command:
1893 *
1894 * command 2b 00 CMD_802_11_AD_HOC_START
1895 * size b1 00
1896 * sequence xx xx
1897 * result 00 00
1898 * ssid 54 45 53 54 00 00 00 00
1899 * 00 00 00 00 00 00 00 00
1900 * 00 00 00 00 00 00 00 00
1901 * 00 00 00 00 00 00 00 00
1902 * bss type 02
1903 * beacon period 64 00
1904 * dtim period 00
1905 * IE IBSS 06
1906 * IE IBSS len 02
1907 * IE IBSS atim 00 00
1908 * reserved 00 00 00 00
1909 * IE DS 03
1910 * IE DS len 01
1911 * IE DS channel 01
1912 * reserved 00 00 00 00
1913 * probe delay 00 00
1914 * capability 02 00
1915 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1916 * 0c 12 18 24 30 48 60 6c
1917 * padding 100 bytes
1918 */
1919 memset(&cmd, 0, sizeof(cmd));
1920 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1921 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1922 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1923 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1924 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1925 cmd.ibss.header.len = 2;
1926 cmd.ibss.atimwindow = 0;
1927 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1928 cmd.ds.header.len = 1;
1929 cmd.ds.channel = params->channel->hw_value;
1930 /* Only v8 and below support setting probe delay */
1931 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1932 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1933 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1934 capability = WLAN_CAPABILITY_IBSS;
1935 cmd.capability = cpu_to_le16(capability);
1936 lbs_add_rates(cmd.rates);
1937
1938
1939 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1940 if (ret)
1941 goto out;
1942
1943 /*
1944 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1945 *
1946 * response 2b 80
1947 * size 14 00
1948 * sequence xx xx
1949 * result 00 00
1950 * reserved 00
1951 * bssid 02 2b 7b 0f 86 0e
1952 */
1953 lbs_join_post(priv, params, resp->bssid, capability);
1954
1955 out:
1956 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1957 return ret;
1958 }
1959
1960
lbs_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1961 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1962 struct cfg80211_ibss_params *params)
1963 {
1964 struct lbs_private *priv = wiphy_priv(wiphy);
1965 int ret = 0;
1966 struct cfg80211_bss *bss;
1967 DECLARE_SSID_BUF(ssid_buf);
1968
1969 if (dev == priv->mesh_dev)
1970 return -EOPNOTSUPP;
1971
1972 lbs_deb_enter(LBS_DEB_CFG80211);
1973
1974 if (!params->channel) {
1975 ret = -ENOTSUPP;
1976 goto out;
1977 }
1978
1979 ret = lbs_set_channel(priv, params->channel->hw_value);
1980 if (ret)
1981 goto out;
1982
1983 /* Search if someone is beaconing. This assumes that the
1984 * bss list is populated already */
1985 bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1986 params->ssid, params->ssid_len,
1987 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1988
1989 if (bss) {
1990 ret = lbs_ibss_join_existing(priv, params, bss);
1991 cfg80211_put_bss(bss);
1992 } else
1993 ret = lbs_ibss_start_new(priv, params);
1994
1995
1996 out:
1997 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1998 return ret;
1999 }
2000
2001
lbs_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2002 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2003 {
2004 struct lbs_private *priv = wiphy_priv(wiphy);
2005 struct cmd_ds_802_11_ad_hoc_stop cmd;
2006 int ret = 0;
2007
2008 if (dev == priv->mesh_dev)
2009 return -EOPNOTSUPP;
2010
2011 lbs_deb_enter(LBS_DEB_CFG80211);
2012
2013 memset(&cmd, 0, sizeof(cmd));
2014 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2015 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2016
2017 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2018 lbs_mac_event_disconnected(priv);
2019
2020 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2021 return ret;
2022 }
2023
2024
2025
2026
2027 /*
2028 * Initialization
2029 */
2030
2031 static struct cfg80211_ops lbs_cfg80211_ops = {
2032 .set_channel = lbs_cfg_set_channel,
2033 .scan = lbs_cfg_scan,
2034 .connect = lbs_cfg_connect,
2035 .disconnect = lbs_cfg_disconnect,
2036 .add_key = lbs_cfg_add_key,
2037 .del_key = lbs_cfg_del_key,
2038 .set_default_key = lbs_cfg_set_default_key,
2039 .get_station = lbs_cfg_get_station,
2040 .change_virtual_intf = lbs_change_intf,
2041 .join_ibss = lbs_join_ibss,
2042 .leave_ibss = lbs_leave_ibss,
2043 };
2044
2045
2046 /*
2047 * At this time lbs_private *priv doesn't even exist, so we just allocate
2048 * memory and don't initialize the wiphy further. This is postponed until we
2049 * can talk to the firmware and happens at registration time in
2050 * lbs_cfg_wiphy_register().
2051 */
lbs_cfg_alloc(struct device * dev)2052 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2053 {
2054 int ret = 0;
2055 struct wireless_dev *wdev;
2056
2057 lbs_deb_enter(LBS_DEB_CFG80211);
2058
2059 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2060 if (!wdev) {
2061 dev_err(dev, "cannot allocate wireless device\n");
2062 return ERR_PTR(-ENOMEM);
2063 }
2064
2065 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2066 if (!wdev->wiphy) {
2067 dev_err(dev, "cannot allocate wiphy\n");
2068 ret = -ENOMEM;
2069 goto err_wiphy_new;
2070 }
2071
2072 lbs_deb_leave(LBS_DEB_CFG80211);
2073 return wdev;
2074
2075 err_wiphy_new:
2076 kfree(wdev);
2077 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2078 return ERR_PTR(ret);
2079 }
2080
2081
lbs_cfg_set_regulatory_hint(struct lbs_private * priv)2082 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2083 {
2084 struct region_code_mapping {
2085 const char *cn;
2086 int code;
2087 };
2088
2089 /* Section 5.17.2 */
2090 static const struct region_code_mapping regmap[] = {
2091 {"US ", 0x10}, /* US FCC */
2092 {"CA ", 0x20}, /* Canada */
2093 {"EU ", 0x30}, /* ETSI */
2094 {"ES ", 0x31}, /* Spain */
2095 {"FR ", 0x32}, /* France */
2096 {"JP ", 0x40}, /* Japan */
2097 };
2098 size_t i;
2099
2100 lbs_deb_enter(LBS_DEB_CFG80211);
2101
2102 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2103 if (regmap[i].code == priv->regioncode) {
2104 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2105 break;
2106 }
2107
2108 lbs_deb_leave(LBS_DEB_CFG80211);
2109 }
2110
2111
2112 /*
2113 * This function get's called after lbs_setup_firmware() determined the
2114 * firmware capabities. So we can setup the wiphy according to our
2115 * hardware/firmware.
2116 */
lbs_cfg_register(struct lbs_private * priv)2117 int lbs_cfg_register(struct lbs_private *priv)
2118 {
2119 struct wireless_dev *wdev = priv->wdev;
2120 int ret;
2121
2122 lbs_deb_enter(LBS_DEB_CFG80211);
2123
2124 wdev->wiphy->max_scan_ssids = 1;
2125 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2126
2127 wdev->wiphy->interface_modes =
2128 BIT(NL80211_IFTYPE_STATION) |
2129 BIT(NL80211_IFTYPE_ADHOC);
2130 if (lbs_rtap_supported(priv))
2131 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2132 if (lbs_mesh_activated(priv))
2133 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2134
2135 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2136
2137 /*
2138 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2139 * never seen a firmware without WPA
2140 */
2141 wdev->wiphy->cipher_suites = cipher_suites;
2142 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2143 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2144
2145 ret = wiphy_register(wdev->wiphy);
2146 if (ret < 0)
2147 pr_err("cannot register wiphy device\n");
2148
2149 priv->wiphy_registered = true;
2150
2151 ret = register_netdev(priv->dev);
2152 if (ret)
2153 pr_err("cannot register network device\n");
2154
2155 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2156
2157 lbs_cfg_set_regulatory_hint(priv);
2158
2159 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2160 return ret;
2161 }
2162
lbs_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)2163 int lbs_reg_notifier(struct wiphy *wiphy,
2164 struct regulatory_request *request)
2165 {
2166 struct lbs_private *priv = wiphy_priv(wiphy);
2167 int ret;
2168
2169 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2170 "callback for domain %c%c\n", request->alpha2[0],
2171 request->alpha2[1]);
2172
2173 ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2174
2175 lbs_deb_leave(LBS_DEB_CFG80211);
2176 return ret;
2177 }
2178
lbs_scan_deinit(struct lbs_private * priv)2179 void lbs_scan_deinit(struct lbs_private *priv)
2180 {
2181 lbs_deb_enter(LBS_DEB_CFG80211);
2182 cancel_delayed_work_sync(&priv->scan_work);
2183 }
2184
2185
lbs_cfg_free(struct lbs_private * priv)2186 void lbs_cfg_free(struct lbs_private *priv)
2187 {
2188 struct wireless_dev *wdev = priv->wdev;
2189
2190 lbs_deb_enter(LBS_DEB_CFG80211);
2191
2192 if (!wdev)
2193 return;
2194
2195 if (priv->wiphy_registered)
2196 wiphy_unregister(wdev->wiphy);
2197
2198 if (wdev->wiphy)
2199 wiphy_free(wdev->wiphy);
2200
2201 kfree(wdev);
2202 }
2203