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 if (ap_max > MAX_RATES) {
276 lbs_deb_assoc("invalid rates\n");
277 return tlv;
278 }
279 /* Advance past IE header */
280 ie += 2;
281
282 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
283
284 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
285 hw_rate = lbs_rates[hw].bitrate / 5;
286 for (ap = 0; ap < ap_max; ap++) {
287 if (hw_rate == (ie[ap] & 0x7f)) {
288 *tlv++ = ie[ap];
289 *nrates = *nrates + 1;
290 }
291 }
292 }
293 return tlv;
294 }
295
296 /*
297 * Adds a TLV with all rates the hardware *and* BSS supports.
298 */
lbs_add_common_rates_tlv(u8 * tlv,struct cfg80211_bss * bss)299 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
300 {
301 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
302 const u8 *rates_eid, *ext_rates_eid;
303 int n = 0;
304
305 rcu_read_lock();
306 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
307 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
308
309 /*
310 * 01 00 TLV_TYPE_RATES
311 * 04 00 len
312 * 82 84 8b 96 rates
313 */
314 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
315 tlv += sizeof(rate_tlv->header);
316
317 /* Add basic rates */
318 if (rates_eid) {
319 tlv = add_ie_rates(tlv, rates_eid, &n);
320
321 /* Add extended rates, if any */
322 if (ext_rates_eid)
323 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
324 } else {
325 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
326 /* Fallback: add basic 802.11b rates */
327 *tlv++ = 0x82;
328 *tlv++ = 0x84;
329 *tlv++ = 0x8b;
330 *tlv++ = 0x96;
331 n = 4;
332 }
333 rcu_read_unlock();
334
335 rate_tlv->header.len = cpu_to_le16(n);
336 return sizeof(rate_tlv->header) + n;
337 }
338
339
340 /*
341 * Add auth type TLV.
342 *
343 * This is only needed for newer firmware (V9 and up).
344 */
345 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
346 sizeof(struct mrvl_ie_auth_type)
347
lbs_add_auth_type_tlv(u8 * tlv,enum nl80211_auth_type auth_type)348 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
349 {
350 struct mrvl_ie_auth_type *auth = (void *) tlv;
351
352 /*
353 * 1f 01 TLV_TYPE_AUTH_TYPE
354 * 01 00 len
355 * 01 auth type
356 */
357 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
358 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
359 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
360 return sizeof(*auth);
361 }
362
363
364 /*
365 * Add channel (phy ds) TLV
366 */
367 #define LBS_MAX_CHANNEL_TLV_SIZE \
368 sizeof(struct mrvl_ie_header)
369
lbs_add_channel_tlv(u8 * tlv,u8 channel)370 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
371 {
372 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
373
374 /*
375 * 03 00 TLV_TYPE_PHY_DS
376 * 01 00 len
377 * 06 channel
378 */
379 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
380 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
381 ds->channel = channel;
382 return sizeof(*ds);
383 }
384
385
386 /*
387 * Add (empty) CF param TLV of the form:
388 */
389 #define LBS_MAX_CF_PARAM_TLV_SIZE \
390 sizeof(struct mrvl_ie_header)
391
lbs_add_cf_param_tlv(u8 * tlv)392 static int lbs_add_cf_param_tlv(u8 *tlv)
393 {
394 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
395
396 /*
397 * 04 00 TLV_TYPE_CF
398 * 06 00 len
399 * 00 cfpcnt
400 * 00 cfpperiod
401 * 00 00 cfpmaxduration
402 * 00 00 cfpdurationremaining
403 */
404 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
405 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
406 return sizeof(*cf);
407 }
408
409 /*
410 * Add WPA TLV
411 */
412 #define LBS_MAX_WPA_TLV_SIZE \
413 (sizeof(struct mrvl_ie_header) \
414 + 128 /* TODO: I guessed the size */)
415
lbs_add_wpa_tlv(u8 * tlv,const u8 * ie,u8 ie_len)416 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
417 {
418 size_t tlv_len;
419
420 /*
421 * We need just convert an IE to an TLV. IEs use u8 for the header,
422 * u8 type
423 * u8 len
424 * u8[] data
425 * but TLVs use __le16 instead:
426 * __le16 type
427 * __le16 len
428 * u8[] data
429 */
430 *tlv++ = *ie++;
431 *tlv++ = 0;
432 tlv_len = *tlv++ = *ie++;
433 *tlv++ = 0;
434 while (tlv_len--)
435 *tlv++ = *ie++;
436 /* the TLV is two bytes larger than the IE */
437 return ie_len + 2;
438 }
439
440 /*
441 * Set Channel
442 */
443
lbs_cfg_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)444 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
445 struct cfg80211_chan_def *chandef)
446 {
447 struct lbs_private *priv = wiphy_priv(wiphy);
448 int ret = -ENOTSUPP;
449
450 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
451 chandef->chan->center_freq,
452 cfg80211_get_chandef_type(chandef));
453
454 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
455 goto out;
456
457 ret = lbs_set_channel(priv, chandef->chan->hw_value);
458
459 out:
460 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
461 return ret;
462 }
463
lbs_cfg_set_mesh_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * channel)464 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
465 struct net_device *netdev,
466 struct ieee80211_channel *channel)
467 {
468 struct lbs_private *priv = wiphy_priv(wiphy);
469 int ret = -ENOTSUPP;
470
471 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
472 netdev_name(netdev), channel->center_freq);
473
474 if (netdev != priv->mesh_dev)
475 goto out;
476
477 ret = lbs_mesh_set_channel(priv, channel->hw_value);
478
479 out:
480 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
481 return ret;
482 }
483
484
485
486 /*
487 * Scanning
488 */
489
490 /*
491 * When scanning, the firmware doesn't send a nul packet with the power-safe
492 * bit to the AP. So we cannot stay away from our current channel too long,
493 * otherwise we loose data. So take a "nap" while scanning every other
494 * while.
495 */
496 #define LBS_SCAN_BEFORE_NAP 4
497
498
499 /*
500 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
501 * which isn't really an RSSI, as it becomes larger when moving away from
502 * the AP. Anyway, we need to convert that into mBm.
503 */
504 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
505 ((-(int)rssi + 3)*100)
506
lbs_ret_scan(struct lbs_private * priv,unsigned long dummy,struct cmd_header * resp)507 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
508 struct cmd_header *resp)
509 {
510 struct cfg80211_bss *bss;
511 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
512 int bsssize;
513 const u8 *pos;
514 const u8 *tsfdesc;
515 int tsfsize;
516 int i;
517 int ret = -EILSEQ;
518
519 lbs_deb_enter(LBS_DEB_CFG80211);
520
521 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
522
523 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
524 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
525
526 if (scanresp->nr_sets == 0) {
527 ret = 0;
528 goto done;
529 }
530
531 /*
532 * The general layout of the scan response is described in chapter
533 * 5.7.1. Basically we have a common part, then any number of BSS
534 * descriptor sections. Finally we have section with the same number
535 * of TSFs.
536 *
537 * cmd_ds_802_11_scan_rsp
538 * cmd_header
539 * pos_size
540 * nr_sets
541 * bssdesc 1
542 * bssid
543 * rssi
544 * timestamp
545 * intvl
546 * capa
547 * IEs
548 * bssdesc 2
549 * bssdesc n
550 * MrvlIEtypes_TsfFimestamp_t
551 * TSF for BSS 1
552 * TSF for BSS 2
553 * TSF for BSS n
554 */
555
556 pos = scanresp->bssdesc_and_tlvbuffer;
557
558 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
559 scanresp->bssdescriptsize);
560
561 tsfdesc = pos + bsssize;
562 tsfsize = 4 + 8 * scanresp->nr_sets;
563 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
564
565 /* Validity check: we expect a Marvell-Local TLV */
566 i = get_unaligned_le16(tsfdesc);
567 tsfdesc += 2;
568 if (i != TLV_TYPE_TSFTIMESTAMP) {
569 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
570 goto done;
571 }
572
573 /*
574 * Validity check: the TLV holds TSF values with 8 bytes each, so
575 * the size in the TLV must match the nr_sets value
576 */
577 i = get_unaligned_le16(tsfdesc);
578 tsfdesc += 2;
579 if (i / 8 != scanresp->nr_sets) {
580 lbs_deb_scan("scan response: invalid number of TSF timestamp "
581 "sets (expected %d got %d)\n", scanresp->nr_sets,
582 i / 8);
583 goto done;
584 }
585
586 for (i = 0; i < scanresp->nr_sets; i++) {
587 const u8 *bssid;
588 const u8 *ie;
589 int left;
590 int ielen;
591 int rssi;
592 u16 intvl;
593 u16 capa;
594 int chan_no = -1;
595 const u8 *ssid = NULL;
596 u8 ssid_len = 0;
597
598 int len = get_unaligned_le16(pos);
599 pos += 2;
600
601 /* BSSID */
602 bssid = pos;
603 pos += ETH_ALEN;
604 /* RSSI */
605 rssi = *pos++;
606 /* Packet time stamp */
607 pos += 8;
608 /* Beacon interval */
609 intvl = get_unaligned_le16(pos);
610 pos += 2;
611 /* Capabilities */
612 capa = get_unaligned_le16(pos);
613 pos += 2;
614
615 /* To find out the channel, we must parse the IEs */
616 ie = pos;
617 /*
618 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
619 * interval, capabilities
620 */
621 ielen = left = len - (6 + 1 + 8 + 2 + 2);
622 while (left >= 2) {
623 u8 id, elen;
624 id = *pos++;
625 elen = *pos++;
626 left -= 2;
627 if (elen > left) {
628 lbs_deb_scan("scan response: invalid IE fmt\n");
629 goto done;
630 }
631
632 if (id == WLAN_EID_DS_PARAMS)
633 chan_no = *pos;
634 if (id == WLAN_EID_SSID) {
635 ssid = pos;
636 ssid_len = elen;
637 }
638 left -= elen;
639 pos += elen;
640 }
641
642 /* No channel, no luck */
643 if (chan_no != -1) {
644 struct wiphy *wiphy = priv->wdev->wiphy;
645 int freq = ieee80211_channel_to_frequency(chan_no,
646 IEEE80211_BAND_2GHZ);
647 struct ieee80211_channel *channel =
648 ieee80211_get_channel(wiphy, freq);
649
650 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
651 bssid, capa, chan_no, ssid_len, ssid,
652 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
653
654 if (channel &&
655 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
656 bss = cfg80211_inform_bss(wiphy, channel,
657 CFG80211_BSS_FTYPE_UNKNOWN,
658 bssid, get_unaligned_le64(tsfdesc),
659 capa, intvl, ie, ielen,
660 LBS_SCAN_RSSI_TO_MBM(rssi),
661 GFP_KERNEL);
662 cfg80211_put_bss(wiphy, bss);
663 }
664 } else
665 lbs_deb_scan("scan response: missing BSS channel IE\n");
666
667 tsfdesc += 8;
668 }
669 ret = 0;
670
671 done:
672 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
673 return ret;
674 }
675
676
677 /*
678 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
679 * TLV and a rates TLV. Determine the maximum size of them:
680 */
681 #define LBS_SCAN_MAX_CMD_SIZE \
682 (sizeof(struct cmd_ds_802_11_scan) \
683 + LBS_MAX_SSID_TLV_SIZE \
684 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
685 + LBS_MAX_RATES_TLV_SIZE)
686
687 /*
688 * Assumes priv->scan_req is initialized and valid
689 * Assumes priv->scan_channel is initialized
690 */
lbs_scan_worker(struct work_struct * work)691 static void lbs_scan_worker(struct work_struct *work)
692 {
693 struct lbs_private *priv =
694 container_of(work, struct lbs_private, scan_work.work);
695 struct cmd_ds_802_11_scan *scan_cmd;
696 u8 *tlv; /* pointer into our current, growing TLV storage area */
697 int last_channel;
698 int running, carrier;
699
700 lbs_deb_enter(LBS_DEB_SCAN);
701
702 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
703 if (scan_cmd == NULL)
704 goto out_no_scan_cmd;
705
706 /* prepare fixed part of scan command */
707 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
708
709 /* stop network while we're away from our main channel */
710 running = !netif_queue_stopped(priv->dev);
711 carrier = netif_carrier_ok(priv->dev);
712 if (running)
713 netif_stop_queue(priv->dev);
714 if (carrier)
715 netif_carrier_off(priv->dev);
716
717 /* prepare fixed part of scan command */
718 tlv = scan_cmd->tlvbuffer;
719
720 /* add SSID TLV */
721 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
722 tlv += lbs_add_ssid_tlv(tlv,
723 priv->scan_req->ssids[0].ssid,
724 priv->scan_req->ssids[0].ssid_len);
725
726 /* add channel TLVs */
727 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
728 if (last_channel > priv->scan_req->n_channels)
729 last_channel = priv->scan_req->n_channels;
730 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
731 priv->scan_req->n_ssids);
732
733 /* add rates TLV */
734 tlv += lbs_add_supported_rates_tlv(tlv);
735
736 if (priv->scan_channel < priv->scan_req->n_channels) {
737 cancel_delayed_work(&priv->scan_work);
738 if (netif_running(priv->dev))
739 queue_delayed_work(priv->work_thread, &priv->scan_work,
740 msecs_to_jiffies(300));
741 }
742
743 /* This is the final data we are about to send */
744 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
745 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
746 sizeof(*scan_cmd));
747 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
748 tlv - scan_cmd->tlvbuffer);
749
750 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
751 le16_to_cpu(scan_cmd->hdr.size),
752 lbs_ret_scan, 0);
753
754 if (priv->scan_channel >= priv->scan_req->n_channels) {
755 /* Mark scan done */
756 cancel_delayed_work(&priv->scan_work);
757 lbs_scan_done(priv);
758 }
759
760 /* Restart network */
761 if (carrier)
762 netif_carrier_on(priv->dev);
763 if (running && !priv->tx_pending_len)
764 netif_wake_queue(priv->dev);
765
766 kfree(scan_cmd);
767
768 /* Wake up anything waiting on scan completion */
769 if (priv->scan_req == NULL) {
770 lbs_deb_scan("scan: waking up waiters\n");
771 wake_up_all(&priv->scan_q);
772 }
773
774 out_no_scan_cmd:
775 lbs_deb_leave(LBS_DEB_SCAN);
776 }
777
_internal_start_scan(struct lbs_private * priv,bool internal,struct cfg80211_scan_request * request)778 static void _internal_start_scan(struct lbs_private *priv, bool internal,
779 struct cfg80211_scan_request *request)
780 {
781 lbs_deb_enter(LBS_DEB_CFG80211);
782
783 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
784 request->n_ssids, request->n_channels, request->ie_len);
785
786 priv->scan_channel = 0;
787 priv->scan_req = request;
788 priv->internal_scan = internal;
789
790 queue_delayed_work(priv->work_thread, &priv->scan_work,
791 msecs_to_jiffies(50));
792
793 lbs_deb_leave(LBS_DEB_CFG80211);
794 }
795
796 /*
797 * Clean up priv->scan_req. Should be used to handle the allocation details.
798 */
lbs_scan_done(struct lbs_private * priv)799 void lbs_scan_done(struct lbs_private *priv)
800 {
801 WARN_ON(!priv->scan_req);
802
803 if (priv->internal_scan)
804 kfree(priv->scan_req);
805 else
806 cfg80211_scan_done(priv->scan_req, false);
807
808 priv->scan_req = NULL;
809 }
810
lbs_cfg_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)811 static int lbs_cfg_scan(struct wiphy *wiphy,
812 struct cfg80211_scan_request *request)
813 {
814 struct lbs_private *priv = wiphy_priv(wiphy);
815 int ret = 0;
816
817 lbs_deb_enter(LBS_DEB_CFG80211);
818
819 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
820 /* old scan request not yet processed */
821 ret = -EAGAIN;
822 goto out;
823 }
824
825 _internal_start_scan(priv, false, request);
826
827 if (priv->surpriseremoved)
828 ret = -EIO;
829
830 out:
831 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
832 return ret;
833 }
834
835
836
837
838 /*
839 * Events
840 */
841
lbs_send_disconnect_notification(struct lbs_private * priv,bool locally_generated)842 void lbs_send_disconnect_notification(struct lbs_private *priv,
843 bool locally_generated)
844 {
845 lbs_deb_enter(LBS_DEB_CFG80211);
846
847 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
848 GFP_KERNEL);
849
850 lbs_deb_leave(LBS_DEB_CFG80211);
851 }
852
lbs_send_mic_failureevent(struct lbs_private * priv,u32 event)853 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
854 {
855 lbs_deb_enter(LBS_DEB_CFG80211);
856
857 cfg80211_michael_mic_failure(priv->dev,
858 priv->assoc_bss,
859 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
860 NL80211_KEYTYPE_GROUP :
861 NL80211_KEYTYPE_PAIRWISE,
862 -1,
863 NULL,
864 GFP_KERNEL);
865
866 lbs_deb_leave(LBS_DEB_CFG80211);
867 }
868
869
870
871
872 /*
873 * Connect/disconnect
874 */
875
876
877 /*
878 * This removes all WEP keys
879 */
lbs_remove_wep_keys(struct lbs_private * priv)880 static int lbs_remove_wep_keys(struct lbs_private *priv)
881 {
882 struct cmd_ds_802_11_set_wep cmd;
883 int ret;
884
885 lbs_deb_enter(LBS_DEB_CFG80211);
886
887 memset(&cmd, 0, sizeof(cmd));
888 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
889 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
890 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
891
892 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
893
894 lbs_deb_leave(LBS_DEB_CFG80211);
895 return ret;
896 }
897
898 /*
899 * Set WEP keys
900 */
lbs_set_wep_keys(struct lbs_private * priv)901 static int lbs_set_wep_keys(struct lbs_private *priv)
902 {
903 struct cmd_ds_802_11_set_wep cmd;
904 int i;
905 int ret;
906
907 lbs_deb_enter(LBS_DEB_CFG80211);
908
909 /*
910 * command 13 00
911 * size 50 00
912 * sequence xx xx
913 * result 00 00
914 * action 02 00 ACT_ADD
915 * transmit key 00 00
916 * type for key 1 01 WEP40
917 * type for key 2 00
918 * type for key 3 00
919 * type for key 4 00
920 * key 1 39 39 39 39 39 00 00 00
921 * 00 00 00 00 00 00 00 00
922 * key 2 00 00 00 00 00 00 00 00
923 * 00 00 00 00 00 00 00 00
924 * key 3 00 00 00 00 00 00 00 00
925 * 00 00 00 00 00 00 00 00
926 * key 4 00 00 00 00 00 00 00 00
927 */
928 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
929 priv->wep_key_len[2] || priv->wep_key_len[3]) {
930 /* Only set wep keys if we have at least one of them */
931 memset(&cmd, 0, sizeof(cmd));
932 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
933 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
934 cmd.action = cpu_to_le16(CMD_ACT_ADD);
935
936 for (i = 0; i < 4; i++) {
937 switch (priv->wep_key_len[i]) {
938 case WLAN_KEY_LEN_WEP40:
939 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
940 break;
941 case WLAN_KEY_LEN_WEP104:
942 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
943 break;
944 default:
945 cmd.keytype[i] = 0;
946 break;
947 }
948 memcpy(cmd.keymaterial[i], priv->wep_key[i],
949 priv->wep_key_len[i]);
950 }
951
952 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
953 } else {
954 /* Otherwise remove all wep keys */
955 ret = lbs_remove_wep_keys(priv);
956 }
957
958 lbs_deb_leave(LBS_DEB_CFG80211);
959 return ret;
960 }
961
962
963 /*
964 * Enable/Disable RSN status
965 */
lbs_enable_rsn(struct lbs_private * priv,int enable)966 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
967 {
968 struct cmd_ds_802_11_enable_rsn cmd;
969 int ret;
970
971 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
972
973 /*
974 * cmd 2f 00
975 * size 0c 00
976 * sequence xx xx
977 * result 00 00
978 * action 01 00 ACT_SET
979 * enable 01 00
980 */
981 memset(&cmd, 0, sizeof(cmd));
982 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
983 cmd.action = cpu_to_le16(CMD_ACT_SET);
984 cmd.enable = cpu_to_le16(enable);
985
986 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
987
988 lbs_deb_leave(LBS_DEB_CFG80211);
989 return ret;
990 }
991
992
993 /*
994 * Set WPA/WPA key material
995 */
996
997 /*
998 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
999 * get rid of WEXT, this should go into host.h
1000 */
1001
1002 struct cmd_key_material {
1003 struct cmd_header hdr;
1004
1005 __le16 action;
1006 struct MrvlIEtype_keyParamSet param;
1007 } __packed;
1008
lbs_set_key_material(struct lbs_private * priv,int key_type,int key_info,const u8 * key,u16 key_len)1009 static int lbs_set_key_material(struct lbs_private *priv,
1010 int key_type, int key_info,
1011 const u8 *key, u16 key_len)
1012 {
1013 struct cmd_key_material cmd;
1014 int ret;
1015
1016 lbs_deb_enter(LBS_DEB_CFG80211);
1017
1018 /*
1019 * Example for WPA (TKIP):
1020 *
1021 * cmd 5e 00
1022 * size 34 00
1023 * sequence xx xx
1024 * result 00 00
1025 * action 01 00
1026 * TLV type 00 01 key param
1027 * length 00 26
1028 * key type 01 00 TKIP
1029 * key info 06 00 UNICAST | ENABLED
1030 * key len 20 00
1031 * key 32 bytes
1032 */
1033 memset(&cmd, 0, sizeof(cmd));
1034 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1035 cmd.action = cpu_to_le16(CMD_ACT_SET);
1036 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1037 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1038 cmd.param.keytypeid = cpu_to_le16(key_type);
1039 cmd.param.keyinfo = cpu_to_le16(key_info);
1040 cmd.param.keylen = cpu_to_le16(key_len);
1041 if (key && key_len)
1042 memcpy(cmd.param.key, key, key_len);
1043
1044 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1045
1046 lbs_deb_leave(LBS_DEB_CFG80211);
1047 return ret;
1048 }
1049
1050
1051 /*
1052 * Sets the auth type (open, shared, etc) in the firmware. That
1053 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1054 * command doesn't send an authentication frame at all, it just
1055 * stores the auth_type.
1056 */
lbs_set_authtype(struct lbs_private * priv,struct cfg80211_connect_params * sme)1057 static int lbs_set_authtype(struct lbs_private *priv,
1058 struct cfg80211_connect_params *sme)
1059 {
1060 struct cmd_ds_802_11_authenticate cmd;
1061 int ret;
1062
1063 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1064
1065 /*
1066 * cmd 11 00
1067 * size 19 00
1068 * sequence xx xx
1069 * result 00 00
1070 * BSS id 00 13 19 80 da 30
1071 * auth type 00
1072 * reserved 00 00 00 00 00 00 00 00 00 00
1073 */
1074 memset(&cmd, 0, sizeof(cmd));
1075 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1076 if (sme->bssid)
1077 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1078 /* convert auth_type */
1079 ret = lbs_auth_to_authtype(sme->auth_type);
1080 if (ret < 0)
1081 goto done;
1082
1083 cmd.authtype = ret;
1084 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1085
1086 done:
1087 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1088 return ret;
1089 }
1090
1091
1092 /*
1093 * Create association request
1094 */
1095 #define LBS_ASSOC_MAX_CMD_SIZE \
1096 (sizeof(struct cmd_ds_802_11_associate) \
1097 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1098 + LBS_MAX_SSID_TLV_SIZE \
1099 + LBS_MAX_CHANNEL_TLV_SIZE \
1100 + LBS_MAX_CF_PARAM_TLV_SIZE \
1101 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1102 + LBS_MAX_WPA_TLV_SIZE)
1103
lbs_associate(struct lbs_private * priv,struct cfg80211_bss * bss,struct cfg80211_connect_params * sme)1104 static int lbs_associate(struct lbs_private *priv,
1105 struct cfg80211_bss *bss,
1106 struct cfg80211_connect_params *sme)
1107 {
1108 struct cmd_ds_802_11_associate_response *resp;
1109 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1110 GFP_KERNEL);
1111 const u8 *ssid_eid;
1112 size_t len, resp_ie_len;
1113 int status;
1114 int ret;
1115 u8 *pos = &(cmd->iebuf[0]);
1116 u8 *tmp;
1117
1118 lbs_deb_enter(LBS_DEB_CFG80211);
1119
1120 if (!cmd) {
1121 ret = -ENOMEM;
1122 goto done;
1123 }
1124
1125 /*
1126 * cmd 50 00
1127 * length 34 00
1128 * sequence xx xx
1129 * result 00 00
1130 * BSS id 00 13 19 80 da 30
1131 * capabilities 11 00
1132 * listen interval 0a 00
1133 * beacon interval 00 00
1134 * DTIM period 00
1135 * TLVs xx (up to 512 bytes)
1136 */
1137 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1138
1139 /* Fill in static fields */
1140 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1141 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1142 cmd->capability = cpu_to_le16(bss->capability);
1143
1144 /* add SSID TLV */
1145 rcu_read_lock();
1146 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1147 if (ssid_eid)
1148 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1149 else
1150 lbs_deb_assoc("no SSID\n");
1151 rcu_read_unlock();
1152
1153 /* add DS param TLV */
1154 if (bss->channel)
1155 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1156 else
1157 lbs_deb_assoc("no channel\n");
1158
1159 /* add (empty) CF param TLV */
1160 pos += lbs_add_cf_param_tlv(pos);
1161
1162 /* add rates TLV */
1163 tmp = pos + 4; /* skip Marvell IE header */
1164 pos += lbs_add_common_rates_tlv(pos, bss);
1165 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1166
1167 /* add auth type TLV */
1168 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1169 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1170
1171 /* add WPA/WPA2 TLV */
1172 if (sme->ie && sme->ie_len)
1173 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1174
1175 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1176 (u16)(pos - (u8 *) &cmd->iebuf);
1177 cmd->hdr.size = cpu_to_le16(len);
1178
1179 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1180 le16_to_cpu(cmd->hdr.size));
1181
1182 /* store for later use */
1183 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1184
1185 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1186 if (ret)
1187 goto done;
1188
1189 /* generate connect message to cfg80211 */
1190
1191 resp = (void *) cmd; /* recast for easier field access */
1192 status = le16_to_cpu(resp->statuscode);
1193
1194 /* Older FW versions map the IEEE 802.11 Status Code in the association
1195 * response to the following values returned in resp->statuscode:
1196 *
1197 * IEEE Status Code Marvell Status Code
1198 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1199 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1200 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1201 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1202 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1203 * others -> 0x0003 ASSOC_RESULT_REFUSED
1204 *
1205 * Other response codes:
1206 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1207 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1208 * association response from the AP)
1209 */
1210 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1211 switch (status) {
1212 case 0:
1213 break;
1214 case 1:
1215 lbs_deb_assoc("invalid association parameters\n");
1216 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1217 break;
1218 case 2:
1219 lbs_deb_assoc("timer expired while waiting for AP\n");
1220 status = WLAN_STATUS_AUTH_TIMEOUT;
1221 break;
1222 case 3:
1223 lbs_deb_assoc("association refused by AP\n");
1224 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1225 break;
1226 case 4:
1227 lbs_deb_assoc("authentication refused by AP\n");
1228 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1229 break;
1230 default:
1231 lbs_deb_assoc("association failure %d\n", status);
1232 /* v5 OLPC firmware does return the AP status code if
1233 * it's not one of the values above. Let that through.
1234 */
1235 break;
1236 }
1237 }
1238
1239 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1240 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1241 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1242
1243 resp_ie_len = le16_to_cpu(resp->hdr.size)
1244 - sizeof(resp->hdr)
1245 - 6;
1246 cfg80211_connect_result(priv->dev,
1247 priv->assoc_bss,
1248 sme->ie, sme->ie_len,
1249 resp->iebuf, resp_ie_len,
1250 status,
1251 GFP_KERNEL);
1252
1253 if (status == 0) {
1254 /* TODO: get rid of priv->connect_status */
1255 priv->connect_status = LBS_CONNECTED;
1256 netif_carrier_on(priv->dev);
1257 if (!priv->tx_pending_len)
1258 netif_tx_wake_all_queues(priv->dev);
1259 }
1260
1261 kfree(cmd);
1262 done:
1263 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1264 return ret;
1265 }
1266
1267 static struct cfg80211_scan_request *
_new_connect_scan_req(struct wiphy * wiphy,struct cfg80211_connect_params * sme)1268 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1269 {
1270 struct cfg80211_scan_request *creq = NULL;
1271 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1272 enum ieee80211_band band;
1273
1274 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1275 n_channels * sizeof(void *),
1276 GFP_ATOMIC);
1277 if (!creq)
1278 return NULL;
1279
1280 /* SSIDs come after channels */
1281 creq->ssids = (void *)&creq->channels[n_channels];
1282 creq->n_channels = n_channels;
1283 creq->n_ssids = 1;
1284
1285 /* Scan all available channels */
1286 i = 0;
1287 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1288 int j;
1289
1290 if (!wiphy->bands[band])
1291 continue;
1292
1293 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1294 /* ignore disabled channels */
1295 if (wiphy->bands[band]->channels[j].flags &
1296 IEEE80211_CHAN_DISABLED)
1297 continue;
1298
1299 creq->channels[i] = &wiphy->bands[band]->channels[j];
1300 i++;
1301 }
1302 }
1303 if (i) {
1304 /* Set real number of channels specified in creq->channels[] */
1305 creq->n_channels = i;
1306
1307 /* Scan for the SSID we're going to connect to */
1308 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1309 creq->ssids[0].ssid_len = sme->ssid_len;
1310 } else {
1311 /* No channels found... */
1312 kfree(creq);
1313 creq = NULL;
1314 }
1315
1316 return creq;
1317 }
1318
lbs_cfg_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)1319 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1320 struct cfg80211_connect_params *sme)
1321 {
1322 struct lbs_private *priv = wiphy_priv(wiphy);
1323 struct cfg80211_bss *bss = NULL;
1324 int ret = 0;
1325 u8 preamble = RADIO_PREAMBLE_SHORT;
1326
1327 if (dev == priv->mesh_dev)
1328 return -EOPNOTSUPP;
1329
1330 lbs_deb_enter(LBS_DEB_CFG80211);
1331
1332 if (!sme->bssid) {
1333 struct cfg80211_scan_request *creq;
1334
1335 /*
1336 * Scan for the requested network after waiting for existing
1337 * scans to finish.
1338 */
1339 lbs_deb_assoc("assoc: waiting for existing scans\n");
1340 wait_event_interruptible_timeout(priv->scan_q,
1341 (priv->scan_req == NULL),
1342 (15 * HZ));
1343
1344 creq = _new_connect_scan_req(wiphy, sme);
1345 if (!creq) {
1346 ret = -EINVAL;
1347 goto done;
1348 }
1349
1350 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1351 _internal_start_scan(priv, true, creq);
1352
1353 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1354 wait_event_interruptible_timeout(priv->scan_q,
1355 (priv->scan_req == NULL),
1356 (15 * HZ));
1357 lbs_deb_assoc("assoc: scanning completed\n");
1358 }
1359
1360 /* Find the BSS we want using available scan results */
1361 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1362 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1363 IEEE80211_PRIVACY_ANY);
1364 if (!bss) {
1365 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1366 sme->bssid);
1367 ret = -ENOENT;
1368 goto done;
1369 }
1370 lbs_deb_assoc("trying %pM\n", bss->bssid);
1371 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1372 sme->crypto.cipher_group,
1373 sme->key_idx, sme->key_len);
1374
1375 /* As this is a new connection, clear locally stored WEP keys */
1376 priv->wep_tx_key = 0;
1377 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1378 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1379
1380 /* set/remove WEP keys */
1381 switch (sme->crypto.cipher_group) {
1382 case WLAN_CIPHER_SUITE_WEP40:
1383 case WLAN_CIPHER_SUITE_WEP104:
1384 /* Store provided WEP keys in priv-> */
1385 priv->wep_tx_key = sme->key_idx;
1386 priv->wep_key_len[sme->key_idx] = sme->key_len;
1387 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1388 /* Set WEP keys and WEP mode */
1389 lbs_set_wep_keys(priv);
1390 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1391 lbs_set_mac_control(priv);
1392 /* No RSN mode for WEP */
1393 lbs_enable_rsn(priv, 0);
1394 break;
1395 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1396 /*
1397 * If we don't have no WEP, no WPA and no WPA2,
1398 * we remove all keys like in the WPA/WPA2 setup,
1399 * we just don't set RSN.
1400 *
1401 * Therefore: fall-through
1402 */
1403 case WLAN_CIPHER_SUITE_TKIP:
1404 case WLAN_CIPHER_SUITE_CCMP:
1405 /* Remove WEP keys and WEP mode */
1406 lbs_remove_wep_keys(priv);
1407 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1408 lbs_set_mac_control(priv);
1409
1410 /* clear the WPA/WPA2 keys */
1411 lbs_set_key_material(priv,
1412 KEY_TYPE_ID_WEP, /* doesn't matter */
1413 KEY_INFO_WPA_UNICAST,
1414 NULL, 0);
1415 lbs_set_key_material(priv,
1416 KEY_TYPE_ID_WEP, /* doesn't matter */
1417 KEY_INFO_WPA_MCAST,
1418 NULL, 0);
1419 /* RSN mode for WPA/WPA2 */
1420 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1421 break;
1422 default:
1423 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1424 sme->crypto.cipher_group);
1425 ret = -ENOTSUPP;
1426 goto done;
1427 }
1428
1429 ret = lbs_set_authtype(priv, sme);
1430 if (ret == -ENOTSUPP) {
1431 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1432 goto done;
1433 }
1434
1435 lbs_set_radio(priv, preamble, 1);
1436
1437 /* Do the actual association */
1438 ret = lbs_associate(priv, bss, sme);
1439
1440 done:
1441 if (bss)
1442 cfg80211_put_bss(wiphy, bss);
1443 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1444 return ret;
1445 }
1446
lbs_disconnect(struct lbs_private * priv,u16 reason)1447 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1448 {
1449 struct cmd_ds_802_11_deauthenticate cmd;
1450 int ret;
1451
1452 memset(&cmd, 0, sizeof(cmd));
1453 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1454 /* Mildly ugly to use a locally store my own BSSID ... */
1455 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1456 cmd.reasoncode = cpu_to_le16(reason);
1457
1458 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1459 if (ret)
1460 return ret;
1461
1462 cfg80211_disconnected(priv->dev,
1463 reason,
1464 NULL, 0, true,
1465 GFP_KERNEL);
1466 priv->connect_status = LBS_DISCONNECTED;
1467
1468 return 0;
1469 }
1470
lbs_cfg_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)1471 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1472 u16 reason_code)
1473 {
1474 struct lbs_private *priv = wiphy_priv(wiphy);
1475
1476 if (dev == priv->mesh_dev)
1477 return -EOPNOTSUPP;
1478
1479 lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1480
1481 /* store for lbs_cfg_ret_disconnect() */
1482 priv->disassoc_reason = reason_code;
1483
1484 return lbs_disconnect(priv, reason_code);
1485 }
1486
lbs_cfg_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)1487 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1488 struct net_device *netdev,
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 lbs_deb_enter(LBS_DEB_CFG80211);
1498
1499 if (key_index != priv->wep_tx_key) {
1500 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1501 priv->wep_tx_key = key_index;
1502 lbs_set_wep_keys(priv);
1503 }
1504
1505 return 0;
1506 }
1507
1508
lbs_cfg_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 idx,bool pairwise,const u8 * mac_addr,struct key_params * params)1509 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1510 u8 idx, bool pairwise, const u8 *mac_addr,
1511 struct key_params *params)
1512 {
1513 struct lbs_private *priv = wiphy_priv(wiphy);
1514 u16 key_info;
1515 u16 key_type;
1516 int ret = 0;
1517
1518 if (netdev == priv->mesh_dev)
1519 return -EOPNOTSUPP;
1520
1521 lbs_deb_enter(LBS_DEB_CFG80211);
1522
1523 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1524 params->cipher, mac_addr);
1525 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1526 idx, params->key_len);
1527 if (params->key_len)
1528 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1529 params->key, params->key_len);
1530
1531 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1532 if (params->seq_len)
1533 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1534 params->seq, params->seq_len);
1535
1536 switch (params->cipher) {
1537 case WLAN_CIPHER_SUITE_WEP40:
1538 case WLAN_CIPHER_SUITE_WEP104:
1539 /* actually compare if something has changed ... */
1540 if ((priv->wep_key_len[idx] != params->key_len) ||
1541 memcmp(priv->wep_key[idx],
1542 params->key, params->key_len) != 0) {
1543 priv->wep_key_len[idx] = params->key_len;
1544 memcpy(priv->wep_key[idx],
1545 params->key, params->key_len);
1546 lbs_set_wep_keys(priv);
1547 }
1548 break;
1549 case WLAN_CIPHER_SUITE_TKIP:
1550 case WLAN_CIPHER_SUITE_CCMP:
1551 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1552 ? KEY_INFO_WPA_UNICAST
1553 : KEY_INFO_WPA_MCAST);
1554 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1555 ? KEY_TYPE_ID_TKIP
1556 : KEY_TYPE_ID_AES;
1557 lbs_set_key_material(priv,
1558 key_type,
1559 key_info,
1560 params->key, params->key_len);
1561 break;
1562 default:
1563 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1564 ret = -ENOTSUPP;
1565 break;
1566 }
1567
1568 return ret;
1569 }
1570
1571
lbs_cfg_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)1572 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1573 u8 key_index, bool pairwise, const u8 *mac_addr)
1574 {
1575
1576 lbs_deb_enter(LBS_DEB_CFG80211);
1577
1578 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1579 key_index, mac_addr);
1580
1581 #ifdef TODO
1582 struct lbs_private *priv = wiphy_priv(wiphy);
1583 /*
1584 * I think can keep this a NO-OP, because:
1585
1586 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1587 * - neither "iw" nor "wpa_supplicant" won't call this during
1588 * an ongoing connection
1589 * - TODO: but I have to check if this is still true when
1590 * I set the AP to periodic re-keying
1591 * - we've not kzallec() something when we've added a key at
1592 * lbs_cfg_connect() or lbs_cfg_add_key().
1593 *
1594 * This causes lbs_cfg_del_key() only called at disconnect time,
1595 * where we'd just waste time deleting a key that is not going
1596 * to be used anyway.
1597 */
1598 if (key_index < 3 && priv->wep_key_len[key_index]) {
1599 priv->wep_key_len[key_index] = 0;
1600 lbs_set_wep_keys(priv);
1601 }
1602 #endif
1603
1604 return 0;
1605 }
1606
1607
1608 /*
1609 * Get station
1610 */
1611
lbs_cfg_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)1612 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1613 const u8 *mac, struct station_info *sinfo)
1614 {
1615 struct lbs_private *priv = wiphy_priv(wiphy);
1616 s8 signal, noise;
1617 int ret;
1618 size_t i;
1619
1620 lbs_deb_enter(LBS_DEB_CFG80211);
1621
1622 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1623 BIT(NL80211_STA_INFO_TX_PACKETS) |
1624 BIT(NL80211_STA_INFO_RX_BYTES) |
1625 BIT(NL80211_STA_INFO_RX_PACKETS);
1626 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1627 sinfo->tx_packets = priv->dev->stats.tx_packets;
1628 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1629 sinfo->rx_packets = priv->dev->stats.rx_packets;
1630
1631 /* Get current RSSI */
1632 ret = lbs_get_rssi(priv, &signal, &noise);
1633 if (ret == 0) {
1634 sinfo->signal = signal;
1635 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1636 }
1637
1638 /* Convert priv->cur_rate from hw_value to NL80211 value */
1639 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1640 if (priv->cur_rate == lbs_rates[i].hw_value) {
1641 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1642 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1643 break;
1644 }
1645 }
1646
1647 return 0;
1648 }
1649
1650
1651
1652
1653 /*
1654 * Change interface
1655 */
1656
lbs_change_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1657 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1658 enum nl80211_iftype type, u32 *flags,
1659 struct vif_params *params)
1660 {
1661 struct lbs_private *priv = wiphy_priv(wiphy);
1662 int ret = 0;
1663
1664 if (dev == priv->mesh_dev)
1665 return -EOPNOTSUPP;
1666
1667 switch (type) {
1668 case NL80211_IFTYPE_MONITOR:
1669 case NL80211_IFTYPE_STATION:
1670 case NL80211_IFTYPE_ADHOC:
1671 break;
1672 default:
1673 return -EOPNOTSUPP;
1674 }
1675
1676 lbs_deb_enter(LBS_DEB_CFG80211);
1677
1678 if (priv->iface_running)
1679 ret = lbs_set_iface_type(priv, type);
1680
1681 if (!ret)
1682 priv->wdev->iftype = type;
1683
1684 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1685 return ret;
1686 }
1687
1688
1689
1690 /*
1691 * IBSS (Ad-Hoc)
1692 */
1693
1694 /*
1695 * The firmware needs the following bits masked out of the beacon-derived
1696 * capability field when associating/joining to a BSS:
1697 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1698 */
1699 #define CAPINFO_MASK (~(0xda00))
1700
1701
lbs_join_post(struct lbs_private * priv,struct cfg80211_ibss_params * params,u8 * bssid,u16 capability)1702 static void lbs_join_post(struct lbs_private *priv,
1703 struct cfg80211_ibss_params *params,
1704 u8 *bssid, u16 capability)
1705 {
1706 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1707 2 + 4 + /* basic rates */
1708 2 + 1 + /* DS parameter */
1709 2 + 2 + /* atim */
1710 2 + 8]; /* extended rates */
1711 u8 *fake = fake_ie;
1712 struct cfg80211_bss *bss;
1713
1714 lbs_deb_enter(LBS_DEB_CFG80211);
1715
1716 /*
1717 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1718 * the real IE from the firmware. So we fabricate a fake IE based on
1719 * what the firmware actually sends (sniffed with wireshark).
1720 */
1721 /* Fake SSID IE */
1722 *fake++ = WLAN_EID_SSID;
1723 *fake++ = params->ssid_len;
1724 memcpy(fake, params->ssid, params->ssid_len);
1725 fake += params->ssid_len;
1726 /* Fake supported basic rates IE */
1727 *fake++ = WLAN_EID_SUPP_RATES;
1728 *fake++ = 4;
1729 *fake++ = 0x82;
1730 *fake++ = 0x84;
1731 *fake++ = 0x8b;
1732 *fake++ = 0x96;
1733 /* Fake DS channel IE */
1734 *fake++ = WLAN_EID_DS_PARAMS;
1735 *fake++ = 1;
1736 *fake++ = params->chandef.chan->hw_value;
1737 /* Fake IBSS params IE */
1738 *fake++ = WLAN_EID_IBSS_PARAMS;
1739 *fake++ = 2;
1740 *fake++ = 0; /* ATIM=0 */
1741 *fake++ = 0;
1742 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1743 * but I don't know how this could be checked */
1744 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1745 *fake++ = 8;
1746 *fake++ = 0x0c;
1747 *fake++ = 0x12;
1748 *fake++ = 0x18;
1749 *fake++ = 0x24;
1750 *fake++ = 0x30;
1751 *fake++ = 0x48;
1752 *fake++ = 0x60;
1753 *fake++ = 0x6c;
1754 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1755
1756 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1757 params->chandef.chan,
1758 CFG80211_BSS_FTYPE_UNKNOWN,
1759 bssid,
1760 0,
1761 capability,
1762 params->beacon_interval,
1763 fake_ie, fake - fake_ie,
1764 0, GFP_KERNEL);
1765 cfg80211_put_bss(priv->wdev->wiphy, bss);
1766
1767 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1768 priv->wdev->ssid_len = params->ssid_len;
1769
1770 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1771 GFP_KERNEL);
1772
1773 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1774 priv->connect_status = LBS_CONNECTED;
1775 netif_carrier_on(priv->dev);
1776 if (!priv->tx_pending_len)
1777 netif_wake_queue(priv->dev);
1778
1779 lbs_deb_leave(LBS_DEB_CFG80211);
1780 }
1781
lbs_ibss_join_existing(struct lbs_private * priv,struct cfg80211_ibss_params * params,struct cfg80211_bss * bss)1782 static int lbs_ibss_join_existing(struct lbs_private *priv,
1783 struct cfg80211_ibss_params *params,
1784 struct cfg80211_bss *bss)
1785 {
1786 const u8 *rates_eid;
1787 struct cmd_ds_802_11_ad_hoc_join cmd;
1788 u8 preamble = RADIO_PREAMBLE_SHORT;
1789 int ret = 0;
1790 int hw, i;
1791 u8 rates_max;
1792 u8 *rates;
1793
1794 lbs_deb_enter(LBS_DEB_CFG80211);
1795
1796 /* TODO: set preamble based on scan result */
1797 ret = lbs_set_radio(priv, preamble, 1);
1798 if (ret)
1799 goto out;
1800
1801 /*
1802 * Example CMD_802_11_AD_HOC_JOIN command:
1803 *
1804 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1805 * size 65 00
1806 * sequence xx xx
1807 * result 00 00
1808 * bssid 02 27 27 97 2f 96
1809 * ssid 49 42 53 53 00 00 00 00
1810 * 00 00 00 00 00 00 00 00
1811 * 00 00 00 00 00 00 00 00
1812 * 00 00 00 00 00 00 00 00
1813 * type 02 CMD_BSS_TYPE_IBSS
1814 * beacon period 64 00
1815 * dtim period 00
1816 * timestamp 00 00 00 00 00 00 00 00
1817 * localtime 00 00 00 00 00 00 00 00
1818 * IE DS 03
1819 * IE DS len 01
1820 * IE DS channel 01
1821 * reserveed 00 00 00 00
1822 * IE IBSS 06
1823 * IE IBSS len 02
1824 * IE IBSS atim 00 00
1825 * reserved 00 00 00 00
1826 * capability 02 00
1827 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1828 * fail timeout ff 00
1829 * probe delay 00 00
1830 */
1831 memset(&cmd, 0, sizeof(cmd));
1832 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1833
1834 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1835 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1836 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1837 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1838 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1839 cmd.bss.ds.header.len = 1;
1840 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1841 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1842 cmd.bss.ibss.header.len = 2;
1843 cmd.bss.ibss.atimwindow = 0;
1844 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1845
1846 /* set rates to the intersection of our rates and the rates in the
1847 bss */
1848 rcu_read_lock();
1849 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1850 if (!rates_eid) {
1851 lbs_add_rates(cmd.bss.rates);
1852 } else {
1853 rates_max = rates_eid[1];
1854 if (rates_max > MAX_RATES) {
1855 lbs_deb_join("invalid rates");
1856 rcu_read_unlock();
1857 ret = -EINVAL;
1858 goto out;
1859 }
1860 rates = cmd.bss.rates;
1861 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1862 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1863 for (i = 0; i < rates_max; i++) {
1864 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1865 u8 rate = rates_eid[i+2];
1866 if (rate == 0x02 || rate == 0x04 ||
1867 rate == 0x0b || rate == 0x16)
1868 rate |= 0x80;
1869 *rates++ = rate;
1870 }
1871 }
1872 }
1873 }
1874 rcu_read_unlock();
1875
1876 /* Only v8 and below support setting this */
1877 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1878 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1879 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1880 }
1881 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1882 if (ret)
1883 goto out;
1884
1885 /*
1886 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1887 *
1888 * response 2c 80
1889 * size 09 00
1890 * sequence xx xx
1891 * result 00 00
1892 * reserved 00
1893 */
1894 lbs_join_post(priv, params, bss->bssid, bss->capability);
1895
1896 out:
1897 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1898 return ret;
1899 }
1900
1901
1902
lbs_ibss_start_new(struct lbs_private * priv,struct cfg80211_ibss_params * params)1903 static int lbs_ibss_start_new(struct lbs_private *priv,
1904 struct cfg80211_ibss_params *params)
1905 {
1906 struct cmd_ds_802_11_ad_hoc_start cmd;
1907 struct cmd_ds_802_11_ad_hoc_result *resp =
1908 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1909 u8 preamble = RADIO_PREAMBLE_SHORT;
1910 int ret = 0;
1911 u16 capability;
1912
1913 lbs_deb_enter(LBS_DEB_CFG80211);
1914
1915 ret = lbs_set_radio(priv, preamble, 1);
1916 if (ret)
1917 goto out;
1918
1919 /*
1920 * Example CMD_802_11_AD_HOC_START command:
1921 *
1922 * command 2b 00 CMD_802_11_AD_HOC_START
1923 * size b1 00
1924 * sequence xx xx
1925 * result 00 00
1926 * ssid 54 45 53 54 00 00 00 00
1927 * 00 00 00 00 00 00 00 00
1928 * 00 00 00 00 00 00 00 00
1929 * 00 00 00 00 00 00 00 00
1930 * bss type 02
1931 * beacon period 64 00
1932 * dtim period 00
1933 * IE IBSS 06
1934 * IE IBSS len 02
1935 * IE IBSS atim 00 00
1936 * reserved 00 00 00 00
1937 * IE DS 03
1938 * IE DS len 01
1939 * IE DS channel 01
1940 * reserved 00 00 00 00
1941 * probe delay 00 00
1942 * capability 02 00
1943 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1944 * 0c 12 18 24 30 48 60 6c
1945 * padding 100 bytes
1946 */
1947 memset(&cmd, 0, sizeof(cmd));
1948 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1949 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1950 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1951 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1952 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1953 cmd.ibss.header.len = 2;
1954 cmd.ibss.atimwindow = 0;
1955 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1956 cmd.ds.header.len = 1;
1957 cmd.ds.channel = params->chandef.chan->hw_value;
1958 /* Only v8 and below support setting probe delay */
1959 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1960 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1961 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1962 capability = WLAN_CAPABILITY_IBSS;
1963 cmd.capability = cpu_to_le16(capability);
1964 lbs_add_rates(cmd.rates);
1965
1966
1967 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1968 if (ret)
1969 goto out;
1970
1971 /*
1972 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1973 *
1974 * response 2b 80
1975 * size 14 00
1976 * sequence xx xx
1977 * result 00 00
1978 * reserved 00
1979 * bssid 02 2b 7b 0f 86 0e
1980 */
1981 lbs_join_post(priv, params, resp->bssid, capability);
1982
1983 out:
1984 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1985 return ret;
1986 }
1987
1988
lbs_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1989 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1990 struct cfg80211_ibss_params *params)
1991 {
1992 struct lbs_private *priv = wiphy_priv(wiphy);
1993 int ret = 0;
1994 struct cfg80211_bss *bss;
1995
1996 if (dev == priv->mesh_dev)
1997 return -EOPNOTSUPP;
1998
1999 lbs_deb_enter(LBS_DEB_CFG80211);
2000
2001 if (!params->chandef.chan) {
2002 ret = -ENOTSUPP;
2003 goto out;
2004 }
2005
2006 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
2007 if (ret)
2008 goto out;
2009
2010 /* Search if someone is beaconing. This assumes that the
2011 * bss list is populated already */
2012 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2013 params->ssid, params->ssid_len,
2014 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
2015
2016 if (bss) {
2017 ret = lbs_ibss_join_existing(priv, params, bss);
2018 cfg80211_put_bss(wiphy, bss);
2019 } else
2020 ret = lbs_ibss_start_new(priv, params);
2021
2022
2023 out:
2024 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2025 return ret;
2026 }
2027
2028
lbs_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2029 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2030 {
2031 struct lbs_private *priv = wiphy_priv(wiphy);
2032 struct cmd_ds_802_11_ad_hoc_stop cmd;
2033 int ret = 0;
2034
2035 if (dev == priv->mesh_dev)
2036 return -EOPNOTSUPP;
2037
2038 lbs_deb_enter(LBS_DEB_CFG80211);
2039
2040 memset(&cmd, 0, sizeof(cmd));
2041 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2042 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2043
2044 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2045 lbs_mac_event_disconnected(priv, true);
2046
2047 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2048 return ret;
2049 }
2050
2051
2052
2053
2054 /*
2055 * Initialization
2056 */
2057
2058 static struct cfg80211_ops lbs_cfg80211_ops = {
2059 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2060 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2061 .scan = lbs_cfg_scan,
2062 .connect = lbs_cfg_connect,
2063 .disconnect = lbs_cfg_disconnect,
2064 .add_key = lbs_cfg_add_key,
2065 .del_key = lbs_cfg_del_key,
2066 .set_default_key = lbs_cfg_set_default_key,
2067 .get_station = lbs_cfg_get_station,
2068 .change_virtual_intf = lbs_change_intf,
2069 .join_ibss = lbs_join_ibss,
2070 .leave_ibss = lbs_leave_ibss,
2071 };
2072
2073
2074 /*
2075 * At this time lbs_private *priv doesn't even exist, so we just allocate
2076 * memory and don't initialize the wiphy further. This is postponed until we
2077 * can talk to the firmware and happens at registration time in
2078 * lbs_cfg_wiphy_register().
2079 */
lbs_cfg_alloc(struct device * dev)2080 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2081 {
2082 int ret = 0;
2083 struct wireless_dev *wdev;
2084
2085 lbs_deb_enter(LBS_DEB_CFG80211);
2086
2087 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2088 if (!wdev)
2089 return ERR_PTR(-ENOMEM);
2090
2091 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2092 if (!wdev->wiphy) {
2093 dev_err(dev, "cannot allocate wiphy\n");
2094 ret = -ENOMEM;
2095 goto err_wiphy_new;
2096 }
2097
2098 lbs_deb_leave(LBS_DEB_CFG80211);
2099 return wdev;
2100
2101 err_wiphy_new:
2102 kfree(wdev);
2103 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2104 return ERR_PTR(ret);
2105 }
2106
2107
lbs_cfg_set_regulatory_hint(struct lbs_private * priv)2108 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2109 {
2110 struct region_code_mapping {
2111 const char *cn;
2112 int code;
2113 };
2114
2115 /* Section 5.17.2 */
2116 static const struct region_code_mapping regmap[] = {
2117 {"US ", 0x10}, /* US FCC */
2118 {"CA ", 0x20}, /* Canada */
2119 {"EU ", 0x30}, /* ETSI */
2120 {"ES ", 0x31}, /* Spain */
2121 {"FR ", 0x32}, /* France */
2122 {"JP ", 0x40}, /* Japan */
2123 };
2124 size_t i;
2125
2126 lbs_deb_enter(LBS_DEB_CFG80211);
2127
2128 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2129 if (regmap[i].code == priv->regioncode) {
2130 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2131 break;
2132 }
2133
2134 lbs_deb_leave(LBS_DEB_CFG80211);
2135 }
2136
lbs_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)2137 static void lbs_reg_notifier(struct wiphy *wiphy,
2138 struct regulatory_request *request)
2139 {
2140 struct lbs_private *priv = wiphy_priv(wiphy);
2141
2142 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2143 "callback for domain %c%c\n", request->alpha2[0],
2144 request->alpha2[1]);
2145
2146 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2147 if (lbs_iface_active(priv))
2148 lbs_set_11d_domain_info(priv);
2149
2150 lbs_deb_leave(LBS_DEB_CFG80211);
2151 }
2152
2153 /*
2154 * This function get's called after lbs_setup_firmware() determined the
2155 * firmware capabities. So we can setup the wiphy according to our
2156 * hardware/firmware.
2157 */
lbs_cfg_register(struct lbs_private * priv)2158 int lbs_cfg_register(struct lbs_private *priv)
2159 {
2160 struct wireless_dev *wdev = priv->wdev;
2161 int ret;
2162
2163 lbs_deb_enter(LBS_DEB_CFG80211);
2164
2165 wdev->wiphy->max_scan_ssids = 1;
2166 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2167
2168 wdev->wiphy->interface_modes =
2169 BIT(NL80211_IFTYPE_STATION) |
2170 BIT(NL80211_IFTYPE_ADHOC);
2171 if (lbs_rtap_supported(priv))
2172 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2173 if (lbs_mesh_activated(priv))
2174 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2175
2176 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2177
2178 /*
2179 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2180 * never seen a firmware without WPA
2181 */
2182 wdev->wiphy->cipher_suites = cipher_suites;
2183 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2184 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2185
2186 ret = wiphy_register(wdev->wiphy);
2187 if (ret < 0)
2188 pr_err("cannot register wiphy device\n");
2189
2190 priv->wiphy_registered = true;
2191
2192 ret = register_netdev(priv->dev);
2193 if (ret)
2194 pr_err("cannot register network device\n");
2195
2196 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2197
2198 lbs_cfg_set_regulatory_hint(priv);
2199
2200 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2201 return ret;
2202 }
2203
lbs_scan_deinit(struct lbs_private * priv)2204 void lbs_scan_deinit(struct lbs_private *priv)
2205 {
2206 lbs_deb_enter(LBS_DEB_CFG80211);
2207 cancel_delayed_work_sync(&priv->scan_work);
2208 }
2209
2210
lbs_cfg_free(struct lbs_private * priv)2211 void lbs_cfg_free(struct lbs_private *priv)
2212 {
2213 struct wireless_dev *wdev = priv->wdev;
2214
2215 lbs_deb_enter(LBS_DEB_CFG80211);
2216
2217 if (!wdev)
2218 return;
2219
2220 if (priv->wiphy_registered)
2221 wiphy_unregister(wdev->wiphy);
2222
2223 if (wdev->wiphy)
2224 wiphy_free(wdev->wiphy);
2225
2226 kfree(wdev);
2227 }
2228