1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Implement cfg80211 ("iw") support.
4 *
5 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
6 * Holger Schurig <hs4233@mail.mn-solutions.de>
7 *
8 */
9
10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12 #include <linux/hardirq.h>
13 #include <linux/sched.h>
14 #include <linux/wait.h>
15 #include <linux/slab.h>
16 #include <linux/ieee80211.h>
17 #include <net/cfg80211.h>
18 #include <asm/unaligned.h>
19
20 #include "decl.h"
21 #include "cfg.h"
22 #include "cmd.h"
23 #include "mesh.h"
24
25
26 #define CHAN2G(_channel, _freq, _flags) { \
27 .band = NL80211_BAND_2GHZ, \
28 .center_freq = (_freq), \
29 .hw_value = (_channel), \
30 .flags = (_flags), \
31 .max_antenna_gain = 0, \
32 .max_power = 30, \
33 }
34
35 static struct ieee80211_channel lbs_2ghz_channels[] = {
36 CHAN2G(1, 2412, 0),
37 CHAN2G(2, 2417, 0),
38 CHAN2G(3, 2422, 0),
39 CHAN2G(4, 2427, 0),
40 CHAN2G(5, 2432, 0),
41 CHAN2G(6, 2437, 0),
42 CHAN2G(7, 2442, 0),
43 CHAN2G(8, 2447, 0),
44 CHAN2G(9, 2452, 0),
45 CHAN2G(10, 2457, 0),
46 CHAN2G(11, 2462, 0),
47 CHAN2G(12, 2467, 0),
48 CHAN2G(13, 2472, 0),
49 CHAN2G(14, 2484, 0),
50 };
51
52 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
53 .bitrate = (_rate), \
54 .hw_value = (_hw_value), \
55 .flags = (_flags), \
56 }
57
58
59 /* Table 6 in section 3.2.1.1 */
60 static struct ieee80211_rate lbs_rates[] = {
61 RATETAB_ENT(10, 0, 0),
62 RATETAB_ENT(20, 1, 0),
63 RATETAB_ENT(55, 2, 0),
64 RATETAB_ENT(110, 3, 0),
65 RATETAB_ENT(60, 9, 0),
66 RATETAB_ENT(90, 6, 0),
67 RATETAB_ENT(120, 7, 0),
68 RATETAB_ENT(180, 8, 0),
69 RATETAB_ENT(240, 9, 0),
70 RATETAB_ENT(360, 10, 0),
71 RATETAB_ENT(480, 11, 0),
72 RATETAB_ENT(540, 12, 0),
73 };
74
75 static struct ieee80211_supported_band lbs_band_2ghz = {
76 .channels = lbs_2ghz_channels,
77 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
78 .bitrates = lbs_rates,
79 .n_bitrates = ARRAY_SIZE(lbs_rates),
80 };
81
82
83 static const u32 cipher_suites[] = {
84 WLAN_CIPHER_SUITE_WEP40,
85 WLAN_CIPHER_SUITE_WEP104,
86 WLAN_CIPHER_SUITE_TKIP,
87 WLAN_CIPHER_SUITE_CCMP,
88 };
89
90 /* Time to stay on the channel */
91 #define LBS_DWELL_PASSIVE 100
92 #define LBS_DWELL_ACTIVE 40
93
94
95 /***************************************************************************
96 * Misc utility functions
97 *
98 * TLVs are Marvell specific. They are very similar to IEs, they have the
99 * same structure: type, length, data*. The only difference: for IEs, the
100 * type and length are u8, but for TLVs they're __le16.
101 */
102
103 /*
104 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
105 * in the firmware spec
106 */
lbs_auth_to_authtype(enum nl80211_auth_type auth_type)107 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
108 {
109 int ret = -ENOTSUPP;
110
111 switch (auth_type) {
112 case NL80211_AUTHTYPE_OPEN_SYSTEM:
113 case NL80211_AUTHTYPE_SHARED_KEY:
114 ret = auth_type;
115 break;
116 case NL80211_AUTHTYPE_AUTOMATIC:
117 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
118 break;
119 case NL80211_AUTHTYPE_NETWORK_EAP:
120 ret = 0x80;
121 break;
122 default:
123 /* silence compiler */
124 break;
125 }
126 return ret;
127 }
128
129
130 /*
131 * Various firmware commands need the list of supported rates, but with
132 * the hight-bit set for basic rates
133 */
lbs_add_rates(u8 * rates)134 static int lbs_add_rates(u8 *rates)
135 {
136 size_t i;
137
138 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
139 u8 rate = lbs_rates[i].bitrate / 5;
140 if (rate == 0x02 || rate == 0x04 ||
141 rate == 0x0b || rate == 0x16)
142 rate |= 0x80;
143 rates[i] = rate;
144 }
145 return ARRAY_SIZE(lbs_rates);
146 }
147
148
149 /***************************************************************************
150 * TLV utility functions
151 *
152 * TLVs are Marvell specific. They are very similar to IEs, they have the
153 * same structure: type, length, data*. The only difference: for IEs, the
154 * type and length are u8, but for TLVs they're __le16.
155 */
156
157
158 /*
159 * Add ssid TLV
160 */
161 #define LBS_MAX_SSID_TLV_SIZE \
162 (sizeof(struct mrvl_ie_header) \
163 + IEEE80211_MAX_SSID_LEN)
164
lbs_add_ssid_tlv(u8 * tlv,const u8 * ssid,int ssid_len)165 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
166 {
167 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
168
169 /*
170 * TLV-ID SSID 00 00
171 * length 06 00
172 * ssid 4d 4e 54 45 53 54
173 */
174 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
175 ssid_tlv->header.len = cpu_to_le16(ssid_len);
176 memcpy(ssid_tlv->ssid, ssid, ssid_len);
177 return sizeof(ssid_tlv->header) + ssid_len;
178 }
179
180
181 /*
182 * Add channel list TLV (section 8.4.2)
183 *
184 * Actual channel data comes from priv->wdev->wiphy->channels.
185 */
186 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
187 (sizeof(struct mrvl_ie_header) \
188 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
189
lbs_add_channel_list_tlv(struct lbs_private * priv,u8 * tlv,int last_channel,int active_scan)190 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
191 int last_channel, int active_scan)
192 {
193 int chanscanparamsize = sizeof(struct chanscanparamset) *
194 (last_channel - priv->scan_channel);
195
196 struct mrvl_ie_header *header = (void *) tlv;
197
198 /*
199 * TLV-ID CHANLIST 01 01
200 * length 0e 00
201 * channel 00 01 00 00 00 64 00
202 * radio type 00
203 * channel 01
204 * scan type 00
205 * min scan time 00 00
206 * max scan time 64 00
207 * channel 2 00 02 00 00 00 64 00
208 *
209 */
210
211 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
212 header->len = cpu_to_le16(chanscanparamsize);
213 tlv += sizeof(struct mrvl_ie_header);
214
215 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
216 last_channel); */
217 memset(tlv, 0, chanscanparamsize);
218
219 while (priv->scan_channel < last_channel) {
220 struct chanscanparamset *param = (void *) tlv;
221
222 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
223 param->channumber =
224 priv->scan_req->channels[priv->scan_channel]->hw_value;
225 if (active_scan) {
226 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
227 } else {
228 param->chanscanmode.passivescan = 1;
229 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
230 }
231 tlv += sizeof(struct chanscanparamset);
232 priv->scan_channel++;
233 }
234 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
235 }
236
237
238 /*
239 * Add rates TLV
240 *
241 * The rates are in lbs_bg_rates[], but for the 802.11b
242 * rates the high bit is set. We add this TLV only because
243 * there's a firmware which otherwise doesn't report all
244 * APs in range.
245 */
246 #define LBS_MAX_RATES_TLV_SIZE \
247 (sizeof(struct mrvl_ie_header) \
248 + (ARRAY_SIZE(lbs_rates)))
249
250 /* Adds a TLV with all rates the hardware supports */
lbs_add_supported_rates_tlv(u8 * tlv)251 static int lbs_add_supported_rates_tlv(u8 *tlv)
252 {
253 size_t i;
254 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
255
256 /*
257 * TLV-ID RATES 01 00
258 * length 0e 00
259 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
260 */
261 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
262 tlv += sizeof(rate_tlv->header);
263 i = lbs_add_rates(tlv);
264 tlv += i;
265 rate_tlv->header.len = cpu_to_le16(i);
266 return sizeof(rate_tlv->header) + i;
267 }
268
269 /* Add common rates from a TLV and return the new end of the TLV */
270 static u8 *
add_ie_rates(u8 * tlv,const u8 * ie,int * nrates)271 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
272 {
273 int hw, ap, ap_max = ie[1];
274 u8 hw_rate;
275
276 /* Advance past IE header */
277 ie += 2;
278
279 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
280
281 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
282 hw_rate = lbs_rates[hw].bitrate / 5;
283 for (ap = 0; ap < ap_max; ap++) {
284 if (hw_rate == (ie[ap] & 0x7f)) {
285 *tlv++ = ie[ap];
286 *nrates = *nrates + 1;
287 }
288 }
289 }
290 return tlv;
291 }
292
293 /*
294 * Adds a TLV with all rates the hardware *and* BSS supports.
295 */
lbs_add_common_rates_tlv(u8 * tlv,struct cfg80211_bss * bss)296 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
297 {
298 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
299 const u8 *rates_eid, *ext_rates_eid;
300 int n = 0;
301
302 rcu_read_lock();
303 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
304 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
305
306 /*
307 * 01 00 TLV_TYPE_RATES
308 * 04 00 len
309 * 82 84 8b 96 rates
310 */
311 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
312 tlv += sizeof(rate_tlv->header);
313
314 /* Add basic rates */
315 if (rates_eid) {
316 tlv = add_ie_rates(tlv, rates_eid, &n);
317
318 /* Add extended rates, if any */
319 if (ext_rates_eid)
320 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
321 } else {
322 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
323 /* Fallback: add basic 802.11b rates */
324 *tlv++ = 0x82;
325 *tlv++ = 0x84;
326 *tlv++ = 0x8b;
327 *tlv++ = 0x96;
328 n = 4;
329 }
330 rcu_read_unlock();
331
332 rate_tlv->header.len = cpu_to_le16(n);
333 return sizeof(rate_tlv->header) + n;
334 }
335
336
337 /*
338 * Add auth type TLV.
339 *
340 * This is only needed for newer firmware (V9 and up).
341 */
342 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
343 sizeof(struct mrvl_ie_auth_type)
344
lbs_add_auth_type_tlv(u8 * tlv,enum nl80211_auth_type auth_type)345 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
346 {
347 struct mrvl_ie_auth_type *auth = (void *) tlv;
348
349 /*
350 * 1f 01 TLV_TYPE_AUTH_TYPE
351 * 01 00 len
352 * 01 auth type
353 */
354 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
355 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
356 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
357 return sizeof(*auth);
358 }
359
360
361 /*
362 * Add channel (phy ds) TLV
363 */
364 #define LBS_MAX_CHANNEL_TLV_SIZE \
365 sizeof(struct mrvl_ie_header)
366
lbs_add_channel_tlv(u8 * tlv,u8 channel)367 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
368 {
369 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
370
371 /*
372 * 03 00 TLV_TYPE_PHY_DS
373 * 01 00 len
374 * 06 channel
375 */
376 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
377 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
378 ds->channel = channel;
379 return sizeof(*ds);
380 }
381
382
383 /*
384 * Add (empty) CF param TLV of the form:
385 */
386 #define LBS_MAX_CF_PARAM_TLV_SIZE \
387 sizeof(struct mrvl_ie_header)
388
lbs_add_cf_param_tlv(u8 * tlv)389 static int lbs_add_cf_param_tlv(u8 *tlv)
390 {
391 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
392
393 /*
394 * 04 00 TLV_TYPE_CF
395 * 06 00 len
396 * 00 cfpcnt
397 * 00 cfpperiod
398 * 00 00 cfpmaxduration
399 * 00 00 cfpdurationremaining
400 */
401 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
402 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
403 return sizeof(*cf);
404 }
405
406 /*
407 * Add WPA TLV
408 */
409 #define LBS_MAX_WPA_TLV_SIZE \
410 (sizeof(struct mrvl_ie_header) \
411 + 128 /* TODO: I guessed the size */)
412
lbs_add_wpa_tlv(u8 * tlv,const u8 * ie,u8 ie_len)413 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
414 {
415 size_t tlv_len;
416
417 /*
418 * We need just convert an IE to an TLV. IEs use u8 for the header,
419 * u8 type
420 * u8 len
421 * u8[] data
422 * but TLVs use __le16 instead:
423 * __le16 type
424 * __le16 len
425 * u8[] data
426 */
427 *tlv++ = *ie++;
428 *tlv++ = 0;
429 tlv_len = *tlv++ = *ie++;
430 *tlv++ = 0;
431 while (tlv_len--)
432 *tlv++ = *ie++;
433 /* the TLV is two bytes larger than the IE */
434 return ie_len + 2;
435 }
436
437 /*
438 * Set Channel
439 */
440
lbs_cfg_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)441 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
442 struct cfg80211_chan_def *chandef)
443 {
444 struct lbs_private *priv = wiphy_priv(wiphy);
445 int ret = -ENOTSUPP;
446
447 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
448 goto out;
449
450 ret = lbs_set_channel(priv, chandef->chan->hw_value);
451
452 out:
453 return ret;
454 }
455
lbs_cfg_set_mesh_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * channel)456 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
457 struct net_device *netdev,
458 struct ieee80211_channel *channel)
459 {
460 struct lbs_private *priv = wiphy_priv(wiphy);
461 int ret = -ENOTSUPP;
462
463 if (netdev != priv->mesh_dev)
464 goto out;
465
466 ret = lbs_mesh_set_channel(priv, channel->hw_value);
467
468 out:
469 return ret;
470 }
471
472
473
474 /*
475 * Scanning
476 */
477
478 /*
479 * When scanning, the firmware doesn't send a nul packet with the power-safe
480 * bit to the AP. So we cannot stay away from our current channel too long,
481 * otherwise we loose data. So take a "nap" while scanning every other
482 * while.
483 */
484 #define LBS_SCAN_BEFORE_NAP 4
485
486
487 /*
488 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
489 * which isn't really an RSSI, as it becomes larger when moving away from
490 * the AP. Anyway, we need to convert that into mBm.
491 */
492 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
493 ((-(int)rssi + 3)*100)
494
lbs_ret_scan(struct lbs_private * priv,unsigned long dummy,struct cmd_header * resp)495 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
496 struct cmd_header *resp)
497 {
498 struct cfg80211_bss *bss;
499 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
500 int bsssize;
501 const u8 *pos;
502 const u8 *tsfdesc;
503 int tsfsize;
504 int i;
505 int ret = -EILSEQ;
506
507 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
508
509 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
510 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
511
512 if (scanresp->nr_sets == 0) {
513 ret = 0;
514 goto done;
515 }
516
517 /*
518 * The general layout of the scan response is described in chapter
519 * 5.7.1. Basically we have a common part, then any number of BSS
520 * descriptor sections. Finally we have section with the same number
521 * of TSFs.
522 *
523 * cmd_ds_802_11_scan_rsp
524 * cmd_header
525 * pos_size
526 * nr_sets
527 * bssdesc 1
528 * bssid
529 * rssi
530 * timestamp
531 * intvl
532 * capa
533 * IEs
534 * bssdesc 2
535 * bssdesc n
536 * MrvlIEtypes_TsfFimestamp_t
537 * TSF for BSS 1
538 * TSF for BSS 2
539 * TSF for BSS n
540 */
541
542 pos = scanresp->bssdesc_and_tlvbuffer;
543
544 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
545 scanresp->bssdescriptsize);
546
547 tsfdesc = pos + bsssize;
548 tsfsize = 4 + 8 * scanresp->nr_sets;
549 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
550
551 /* Validity check: we expect a Marvell-Local TLV */
552 i = get_unaligned_le16(tsfdesc);
553 tsfdesc += 2;
554 if (i != TLV_TYPE_TSFTIMESTAMP) {
555 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
556 goto done;
557 }
558
559 /*
560 * Validity check: the TLV holds TSF values with 8 bytes each, so
561 * the size in the TLV must match the nr_sets value
562 */
563 i = get_unaligned_le16(tsfdesc);
564 tsfdesc += 2;
565 if (i / 8 != scanresp->nr_sets) {
566 lbs_deb_scan("scan response: invalid number of TSF timestamp "
567 "sets (expected %d got %d)\n", scanresp->nr_sets,
568 i / 8);
569 goto done;
570 }
571
572 for (i = 0; i < scanresp->nr_sets; i++) {
573 const u8 *bssid;
574 const u8 *ie;
575 int left;
576 int ielen;
577 int rssi;
578 u16 intvl;
579 u16 capa;
580 int chan_no = -1;
581 const u8 *ssid = NULL;
582 u8 ssid_len = 0;
583
584 int len = get_unaligned_le16(pos);
585 pos += 2;
586
587 /* BSSID */
588 bssid = pos;
589 pos += ETH_ALEN;
590 /* RSSI */
591 rssi = *pos++;
592 /* Packet time stamp */
593 pos += 8;
594 /* Beacon interval */
595 intvl = get_unaligned_le16(pos);
596 pos += 2;
597 /* Capabilities */
598 capa = get_unaligned_le16(pos);
599 pos += 2;
600
601 /* To find out the channel, we must parse the IEs */
602 ie = pos;
603 /*
604 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
605 * interval, capabilities
606 */
607 ielen = left = len - (6 + 1 + 8 + 2 + 2);
608 while (left >= 2) {
609 u8 id, elen;
610 id = *pos++;
611 elen = *pos++;
612 left -= 2;
613 if (elen > left) {
614 lbs_deb_scan("scan response: invalid IE fmt\n");
615 goto done;
616 }
617
618 if (id == WLAN_EID_DS_PARAMS)
619 chan_no = *pos;
620 if (id == WLAN_EID_SSID) {
621 ssid = pos;
622 ssid_len = elen;
623 }
624 left -= elen;
625 pos += elen;
626 }
627
628 /* No channel, no luck */
629 if (chan_no != -1) {
630 struct wiphy *wiphy = priv->wdev->wiphy;
631 int freq = ieee80211_channel_to_frequency(chan_no,
632 NL80211_BAND_2GHZ);
633 struct ieee80211_channel *channel =
634 ieee80211_get_channel(wiphy, freq);
635
636 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
637 bssid, capa, chan_no, ssid_len, ssid,
638 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
639
640 if (channel &&
641 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
642 bss = cfg80211_inform_bss(wiphy, channel,
643 CFG80211_BSS_FTYPE_UNKNOWN,
644 bssid, get_unaligned_le64(tsfdesc),
645 capa, intvl, ie, ielen,
646 LBS_SCAN_RSSI_TO_MBM(rssi),
647 GFP_KERNEL);
648 cfg80211_put_bss(wiphy, bss);
649 }
650 } else
651 lbs_deb_scan("scan response: missing BSS channel IE\n");
652
653 tsfdesc += 8;
654 }
655 ret = 0;
656
657 done:
658 return ret;
659 }
660
661
662 /*
663 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
664 * TLV and a rates TLV. Determine the maximum size of them:
665 */
666 #define LBS_SCAN_MAX_CMD_SIZE \
667 (sizeof(struct cmd_ds_802_11_scan) \
668 + LBS_MAX_SSID_TLV_SIZE \
669 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
670 + LBS_MAX_RATES_TLV_SIZE)
671
672 /*
673 * Assumes priv->scan_req is initialized and valid
674 * Assumes priv->scan_channel is initialized
675 */
lbs_scan_worker(struct work_struct * work)676 static void lbs_scan_worker(struct work_struct *work)
677 {
678 struct lbs_private *priv =
679 container_of(work, struct lbs_private, scan_work.work);
680 struct cmd_ds_802_11_scan *scan_cmd;
681 u8 *tlv; /* pointer into our current, growing TLV storage area */
682 int last_channel;
683 int running, carrier;
684
685 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
686 if (scan_cmd == NULL)
687 return;
688
689 /* prepare fixed part of scan command */
690 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
691
692 /* stop network while we're away from our main channel */
693 running = !netif_queue_stopped(priv->dev);
694 carrier = netif_carrier_ok(priv->dev);
695 if (running)
696 netif_stop_queue(priv->dev);
697 if (carrier)
698 netif_carrier_off(priv->dev);
699
700 /* prepare fixed part of scan command */
701 tlv = scan_cmd->tlvbuffer;
702
703 /* add SSID TLV */
704 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
705 tlv += lbs_add_ssid_tlv(tlv,
706 priv->scan_req->ssids[0].ssid,
707 priv->scan_req->ssids[0].ssid_len);
708
709 /* add channel TLVs */
710 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
711 if (last_channel > priv->scan_req->n_channels)
712 last_channel = priv->scan_req->n_channels;
713 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
714 priv->scan_req->n_ssids);
715
716 /* add rates TLV */
717 tlv += lbs_add_supported_rates_tlv(tlv);
718
719 if (priv->scan_channel < priv->scan_req->n_channels) {
720 cancel_delayed_work(&priv->scan_work);
721 if (netif_running(priv->dev))
722 queue_delayed_work(priv->work_thread, &priv->scan_work,
723 msecs_to_jiffies(300));
724 }
725
726 /* This is the final data we are about to send */
727 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
728 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
729 sizeof(*scan_cmd));
730 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
731 tlv - scan_cmd->tlvbuffer);
732
733 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
734 le16_to_cpu(scan_cmd->hdr.size),
735 lbs_ret_scan, 0);
736
737 if (priv->scan_channel >= priv->scan_req->n_channels) {
738 /* Mark scan done */
739 cancel_delayed_work(&priv->scan_work);
740 lbs_scan_done(priv);
741 }
742
743 /* Restart network */
744 if (carrier)
745 netif_carrier_on(priv->dev);
746 if (running && !priv->tx_pending_len)
747 netif_wake_queue(priv->dev);
748
749 kfree(scan_cmd);
750
751 /* Wake up anything waiting on scan completion */
752 if (priv->scan_req == NULL) {
753 lbs_deb_scan("scan: waking up waiters\n");
754 wake_up_all(&priv->scan_q);
755 }
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_scan("scan: ssids %d, channels %d, ie_len %zd\n",
762 request->n_ssids, request->n_channels, request->ie_len);
763
764 priv->scan_channel = 0;
765 priv->scan_req = request;
766 priv->internal_scan = internal;
767
768 queue_delayed_work(priv->work_thread, &priv->scan_work,
769 msecs_to_jiffies(50));
770 }
771
772 /*
773 * Clean up priv->scan_req. Should be used to handle the allocation details.
774 */
lbs_scan_done(struct lbs_private * priv)775 void lbs_scan_done(struct lbs_private *priv)
776 {
777 WARN_ON(!priv->scan_req);
778
779 if (priv->internal_scan) {
780 kfree(priv->scan_req);
781 } else {
782 struct cfg80211_scan_info info = {
783 .aborted = false,
784 };
785
786 cfg80211_scan_done(priv->scan_req, &info);
787 }
788
789 priv->scan_req = NULL;
790 }
791
lbs_cfg_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)792 static int lbs_cfg_scan(struct wiphy *wiphy,
793 struct cfg80211_scan_request *request)
794 {
795 struct lbs_private *priv = wiphy_priv(wiphy);
796 int ret = 0;
797
798 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
799 /* old scan request not yet processed */
800 ret = -EAGAIN;
801 goto out;
802 }
803
804 _internal_start_scan(priv, false, request);
805
806 if (priv->surpriseremoved)
807 ret = -EIO;
808
809 out:
810 return ret;
811 }
812
813
814
815
816 /*
817 * Events
818 */
819
lbs_send_disconnect_notification(struct lbs_private * priv,bool locally_generated)820 void lbs_send_disconnect_notification(struct lbs_private *priv,
821 bool locally_generated)
822 {
823 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
824 GFP_KERNEL);
825 }
826
lbs_send_mic_failureevent(struct lbs_private * priv,u32 event)827 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
828 {
829 cfg80211_michael_mic_failure(priv->dev,
830 priv->assoc_bss,
831 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
832 NL80211_KEYTYPE_GROUP :
833 NL80211_KEYTYPE_PAIRWISE,
834 -1,
835 NULL,
836 GFP_KERNEL);
837 }
838
839
840
841
842 /*
843 * Connect/disconnect
844 */
845
846
847 /*
848 * This removes all WEP keys
849 */
lbs_remove_wep_keys(struct lbs_private * priv)850 static int lbs_remove_wep_keys(struct lbs_private *priv)
851 {
852 struct cmd_ds_802_11_set_wep cmd;
853 int ret;
854
855 memset(&cmd, 0, sizeof(cmd));
856 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
857 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
858 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
859
860 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
861
862 return ret;
863 }
864
865 /*
866 * Set WEP keys
867 */
lbs_set_wep_keys(struct lbs_private * priv)868 static int lbs_set_wep_keys(struct lbs_private *priv)
869 {
870 struct cmd_ds_802_11_set_wep cmd;
871 int i;
872 int ret;
873
874 /*
875 * command 13 00
876 * size 50 00
877 * sequence xx xx
878 * result 00 00
879 * action 02 00 ACT_ADD
880 * transmit key 00 00
881 * type for key 1 01 WEP40
882 * type for key 2 00
883 * type for key 3 00
884 * type for key 4 00
885 * key 1 39 39 39 39 39 00 00 00
886 * 00 00 00 00 00 00 00 00
887 * key 2 00 00 00 00 00 00 00 00
888 * 00 00 00 00 00 00 00 00
889 * key 3 00 00 00 00 00 00 00 00
890 * 00 00 00 00 00 00 00 00
891 * key 4 00 00 00 00 00 00 00 00
892 */
893 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
894 priv->wep_key_len[2] || priv->wep_key_len[3]) {
895 /* Only set wep keys if we have at least one of them */
896 memset(&cmd, 0, sizeof(cmd));
897 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
898 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
899 cmd.action = cpu_to_le16(CMD_ACT_ADD);
900
901 for (i = 0; i < 4; i++) {
902 switch (priv->wep_key_len[i]) {
903 case WLAN_KEY_LEN_WEP40:
904 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
905 break;
906 case WLAN_KEY_LEN_WEP104:
907 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
908 break;
909 default:
910 cmd.keytype[i] = 0;
911 break;
912 }
913 memcpy(cmd.keymaterial[i], priv->wep_key[i],
914 priv->wep_key_len[i]);
915 }
916
917 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
918 } else {
919 /* Otherwise remove all wep keys */
920 ret = lbs_remove_wep_keys(priv);
921 }
922
923 return ret;
924 }
925
926
927 /*
928 * Enable/Disable RSN status
929 */
lbs_enable_rsn(struct lbs_private * priv,int enable)930 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
931 {
932 struct cmd_ds_802_11_enable_rsn cmd;
933 int ret;
934
935 /*
936 * cmd 2f 00
937 * size 0c 00
938 * sequence xx xx
939 * result 00 00
940 * action 01 00 ACT_SET
941 * enable 01 00
942 */
943 memset(&cmd, 0, sizeof(cmd));
944 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
945 cmd.action = cpu_to_le16(CMD_ACT_SET);
946 cmd.enable = cpu_to_le16(enable);
947
948 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
949
950 return ret;
951 }
952
953
954 /*
955 * Set WPA/WPA key material
956 */
957
958 /*
959 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
960 * get rid of WEXT, this should go into host.h
961 */
962
963 struct cmd_key_material {
964 struct cmd_header hdr;
965
966 __le16 action;
967 struct MrvlIEtype_keyParamSet param;
968 } __packed;
969
lbs_set_key_material(struct lbs_private * priv,int key_type,int key_info,const u8 * key,u16 key_len)970 static int lbs_set_key_material(struct lbs_private *priv,
971 int key_type, int key_info,
972 const u8 *key, u16 key_len)
973 {
974 struct cmd_key_material cmd;
975 int ret;
976
977 /*
978 * Example for WPA (TKIP):
979 *
980 * cmd 5e 00
981 * size 34 00
982 * sequence xx xx
983 * result 00 00
984 * action 01 00
985 * TLV type 00 01 key param
986 * length 00 26
987 * key type 01 00 TKIP
988 * key info 06 00 UNICAST | ENABLED
989 * key len 20 00
990 * key 32 bytes
991 */
992 memset(&cmd, 0, sizeof(cmd));
993 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
994 cmd.action = cpu_to_le16(CMD_ACT_SET);
995 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
996 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
997 cmd.param.keytypeid = cpu_to_le16(key_type);
998 cmd.param.keyinfo = cpu_to_le16(key_info);
999 cmd.param.keylen = cpu_to_le16(key_len);
1000 if (key && key_len)
1001 memcpy(cmd.param.key, key, key_len);
1002
1003 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1004
1005 return ret;
1006 }
1007
1008
1009 /*
1010 * Sets the auth type (open, shared, etc) in the firmware. That
1011 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1012 * command doesn't send an authentication frame at all, it just
1013 * stores the auth_type.
1014 */
lbs_set_authtype(struct lbs_private * priv,struct cfg80211_connect_params * sme)1015 static int lbs_set_authtype(struct lbs_private *priv,
1016 struct cfg80211_connect_params *sme)
1017 {
1018 struct cmd_ds_802_11_authenticate cmd;
1019 int ret;
1020
1021 /*
1022 * cmd 11 00
1023 * size 19 00
1024 * sequence xx xx
1025 * result 00 00
1026 * BSS id 00 13 19 80 da 30
1027 * auth type 00
1028 * reserved 00 00 00 00 00 00 00 00 00 00
1029 */
1030 memset(&cmd, 0, sizeof(cmd));
1031 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1032 if (sme->bssid)
1033 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1034 /* convert auth_type */
1035 ret = lbs_auth_to_authtype(sme->auth_type);
1036 if (ret < 0)
1037 goto done;
1038
1039 cmd.authtype = ret;
1040 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1041
1042 done:
1043 return ret;
1044 }
1045
1046
1047 /*
1048 * Create association request
1049 */
1050 #define LBS_ASSOC_MAX_CMD_SIZE \
1051 (sizeof(struct cmd_ds_802_11_associate) \
1052 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1053 + LBS_MAX_SSID_TLV_SIZE \
1054 + LBS_MAX_CHANNEL_TLV_SIZE \
1055 + LBS_MAX_CF_PARAM_TLV_SIZE \
1056 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1057 + LBS_MAX_WPA_TLV_SIZE)
1058
lbs_associate(struct lbs_private * priv,struct cfg80211_bss * bss,struct cfg80211_connect_params * sme)1059 static int lbs_associate(struct lbs_private *priv,
1060 struct cfg80211_bss *bss,
1061 struct cfg80211_connect_params *sme)
1062 {
1063 struct cmd_ds_802_11_associate_response *resp;
1064 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1065 GFP_KERNEL);
1066 const u8 *ssid_eid;
1067 size_t len, resp_ie_len;
1068 int status;
1069 int ret;
1070 u8 *pos;
1071 u8 *tmp;
1072
1073 if (!cmd) {
1074 ret = -ENOMEM;
1075 goto done;
1076 }
1077 pos = &cmd->iebuf[0];
1078
1079 /*
1080 * cmd 50 00
1081 * length 34 00
1082 * sequence xx xx
1083 * result 00 00
1084 * BSS id 00 13 19 80 da 30
1085 * capabilities 11 00
1086 * listen interval 0a 00
1087 * beacon interval 00 00
1088 * DTIM period 00
1089 * TLVs xx (up to 512 bytes)
1090 */
1091 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1092
1093 /* Fill in static fields */
1094 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1095 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1096 cmd->capability = cpu_to_le16(bss->capability);
1097
1098 /* add SSID TLV */
1099 rcu_read_lock();
1100 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1101 if (ssid_eid)
1102 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1103 else
1104 lbs_deb_assoc("no SSID\n");
1105 rcu_read_unlock();
1106
1107 /* add DS param TLV */
1108 if (bss->channel)
1109 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1110 else
1111 lbs_deb_assoc("no channel\n");
1112
1113 /* add (empty) CF param TLV */
1114 pos += lbs_add_cf_param_tlv(pos);
1115
1116 /* add rates TLV */
1117 tmp = pos + 4; /* skip Marvell IE header */
1118 pos += lbs_add_common_rates_tlv(pos, bss);
1119 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1120
1121 /* add auth type TLV */
1122 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1123 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1124
1125 /* add WPA/WPA2 TLV */
1126 if (sme->ie && sme->ie_len)
1127 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1128
1129 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1130 (u16)(pos - (u8 *) &cmd->iebuf);
1131 cmd->hdr.size = cpu_to_le16(len);
1132
1133 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1134 le16_to_cpu(cmd->hdr.size));
1135
1136 /* store for later use */
1137 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1138
1139 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1140 if (ret)
1141 goto done;
1142
1143 /* generate connect message to cfg80211 */
1144
1145 resp = (void *) cmd; /* recast for easier field access */
1146 status = le16_to_cpu(resp->statuscode);
1147
1148 /* Older FW versions map the IEEE 802.11 Status Code in the association
1149 * response to the following values returned in resp->statuscode:
1150 *
1151 * IEEE Status Code Marvell Status Code
1152 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1153 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1154 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1155 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1156 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1157 * others -> 0x0003 ASSOC_RESULT_REFUSED
1158 *
1159 * Other response codes:
1160 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1161 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1162 * association response from the AP)
1163 */
1164 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1165 switch (status) {
1166 case 0:
1167 break;
1168 case 1:
1169 lbs_deb_assoc("invalid association parameters\n");
1170 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1171 break;
1172 case 2:
1173 lbs_deb_assoc("timer expired while waiting for AP\n");
1174 status = WLAN_STATUS_AUTH_TIMEOUT;
1175 break;
1176 case 3:
1177 lbs_deb_assoc("association refused by AP\n");
1178 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1179 break;
1180 case 4:
1181 lbs_deb_assoc("authentication refused by AP\n");
1182 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1183 break;
1184 default:
1185 lbs_deb_assoc("association failure %d\n", status);
1186 /* v5 OLPC firmware does return the AP status code if
1187 * it's not one of the values above. Let that through.
1188 */
1189 break;
1190 }
1191 }
1192
1193 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1194 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1195 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1196
1197 resp_ie_len = le16_to_cpu(resp->hdr.size)
1198 - sizeof(resp->hdr)
1199 - 6;
1200 cfg80211_connect_result(priv->dev,
1201 priv->assoc_bss,
1202 sme->ie, sme->ie_len,
1203 resp->iebuf, resp_ie_len,
1204 status,
1205 GFP_KERNEL);
1206
1207 if (status == 0) {
1208 /* TODO: get rid of priv->connect_status */
1209 priv->connect_status = LBS_CONNECTED;
1210 netif_carrier_on(priv->dev);
1211 if (!priv->tx_pending_len)
1212 netif_tx_wake_all_queues(priv->dev);
1213 }
1214
1215 kfree(cmd);
1216 done:
1217 return ret;
1218 }
1219
1220 static struct cfg80211_scan_request *
_new_connect_scan_req(struct wiphy * wiphy,struct cfg80211_connect_params * sme)1221 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1222 {
1223 struct cfg80211_scan_request *creq = NULL;
1224 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1225 enum nl80211_band band;
1226
1227 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1228 n_channels * sizeof(void *),
1229 GFP_ATOMIC);
1230 if (!creq)
1231 return NULL;
1232
1233 /* SSIDs come after channels */
1234 creq->ssids = (void *)&creq->channels[n_channels];
1235 creq->n_channels = n_channels;
1236 creq->n_ssids = 1;
1237
1238 /* Scan all available channels */
1239 i = 0;
1240 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1241 int j;
1242
1243 if (!wiphy->bands[band])
1244 continue;
1245
1246 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1247 /* ignore disabled channels */
1248 if (wiphy->bands[band]->channels[j].flags &
1249 IEEE80211_CHAN_DISABLED)
1250 continue;
1251
1252 creq->channels[i] = &wiphy->bands[band]->channels[j];
1253 i++;
1254 }
1255 }
1256 if (i) {
1257 /* Set real number of channels specified in creq->channels[] */
1258 creq->n_channels = i;
1259
1260 /* Scan for the SSID we're going to connect to */
1261 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1262 creq->ssids[0].ssid_len = sme->ssid_len;
1263 } else {
1264 /* No channels found... */
1265 kfree(creq);
1266 creq = NULL;
1267 }
1268
1269 return creq;
1270 }
1271
lbs_cfg_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)1272 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1273 struct cfg80211_connect_params *sme)
1274 {
1275 struct lbs_private *priv = wiphy_priv(wiphy);
1276 struct cfg80211_bss *bss = NULL;
1277 int ret = 0;
1278 u8 preamble = RADIO_PREAMBLE_SHORT;
1279
1280 if (dev == priv->mesh_dev)
1281 return -EOPNOTSUPP;
1282
1283 if (!sme->bssid) {
1284 struct cfg80211_scan_request *creq;
1285
1286 /*
1287 * Scan for the requested network after waiting for existing
1288 * scans to finish.
1289 */
1290 lbs_deb_assoc("assoc: waiting for existing scans\n");
1291 wait_event_interruptible_timeout(priv->scan_q,
1292 (priv->scan_req == NULL),
1293 (15 * HZ));
1294
1295 creq = _new_connect_scan_req(wiphy, sme);
1296 if (!creq) {
1297 ret = -EINVAL;
1298 goto done;
1299 }
1300
1301 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1302 _internal_start_scan(priv, true, creq);
1303
1304 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1305 wait_event_interruptible_timeout(priv->scan_q,
1306 (priv->scan_req == NULL),
1307 (15 * HZ));
1308 lbs_deb_assoc("assoc: scanning completed\n");
1309 }
1310
1311 /* Find the BSS we want using available scan results */
1312 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1313 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1314 IEEE80211_PRIVACY_ANY);
1315 if (!bss) {
1316 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1317 sme->bssid);
1318 ret = -ENOENT;
1319 goto done;
1320 }
1321 lbs_deb_assoc("trying %pM\n", bss->bssid);
1322 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1323 sme->crypto.cipher_group,
1324 sme->key_idx, sme->key_len);
1325
1326 /* As this is a new connection, clear locally stored WEP keys */
1327 priv->wep_tx_key = 0;
1328 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1329 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1330
1331 /* set/remove WEP keys */
1332 switch (sme->crypto.cipher_group) {
1333 case WLAN_CIPHER_SUITE_WEP40:
1334 case WLAN_CIPHER_SUITE_WEP104:
1335 /* Store provided WEP keys in priv-> */
1336 priv->wep_tx_key = sme->key_idx;
1337 priv->wep_key_len[sme->key_idx] = sme->key_len;
1338 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1339 /* Set WEP keys and WEP mode */
1340 lbs_set_wep_keys(priv);
1341 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1342 lbs_set_mac_control(priv);
1343 /* No RSN mode for WEP */
1344 lbs_enable_rsn(priv, 0);
1345 break;
1346 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1347 /*
1348 * If we don't have no WEP, no WPA and no WPA2,
1349 * we remove all keys like in the WPA/WPA2 setup,
1350 * we just don't set RSN.
1351 *
1352 * Therefore: fall-through
1353 */
1354 case WLAN_CIPHER_SUITE_TKIP:
1355 case WLAN_CIPHER_SUITE_CCMP:
1356 /* Remove WEP keys and WEP mode */
1357 lbs_remove_wep_keys(priv);
1358 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1359 lbs_set_mac_control(priv);
1360
1361 /* clear the WPA/WPA2 keys */
1362 lbs_set_key_material(priv,
1363 KEY_TYPE_ID_WEP, /* doesn't matter */
1364 KEY_INFO_WPA_UNICAST,
1365 NULL, 0);
1366 lbs_set_key_material(priv,
1367 KEY_TYPE_ID_WEP, /* doesn't matter */
1368 KEY_INFO_WPA_MCAST,
1369 NULL, 0);
1370 /* RSN mode for WPA/WPA2 */
1371 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1372 break;
1373 default:
1374 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1375 sme->crypto.cipher_group);
1376 ret = -ENOTSUPP;
1377 goto done;
1378 }
1379
1380 ret = lbs_set_authtype(priv, sme);
1381 if (ret == -ENOTSUPP) {
1382 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1383 goto done;
1384 }
1385
1386 lbs_set_radio(priv, preamble, 1);
1387
1388 /* Do the actual association */
1389 ret = lbs_associate(priv, bss, sme);
1390
1391 done:
1392 if (bss)
1393 cfg80211_put_bss(wiphy, bss);
1394 return ret;
1395 }
1396
lbs_disconnect(struct lbs_private * priv,u16 reason)1397 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1398 {
1399 struct cmd_ds_802_11_deauthenticate cmd;
1400 int ret;
1401
1402 memset(&cmd, 0, sizeof(cmd));
1403 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1404 /* Mildly ugly to use a locally store my own BSSID ... */
1405 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1406 cmd.reasoncode = cpu_to_le16(reason);
1407
1408 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1409 if (ret)
1410 return ret;
1411
1412 cfg80211_disconnected(priv->dev,
1413 reason,
1414 NULL, 0, true,
1415 GFP_KERNEL);
1416 priv->connect_status = LBS_DISCONNECTED;
1417
1418 return 0;
1419 }
1420
lbs_cfg_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)1421 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1422 u16 reason_code)
1423 {
1424 struct lbs_private *priv = wiphy_priv(wiphy);
1425
1426 if (dev == priv->mesh_dev)
1427 return -EOPNOTSUPP;
1428
1429 /* store for lbs_cfg_ret_disconnect() */
1430 priv->disassoc_reason = reason_code;
1431
1432 return lbs_disconnect(priv, reason_code);
1433 }
1434
lbs_cfg_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)1435 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1436 struct net_device *netdev,
1437 u8 key_index, bool unicast,
1438 bool multicast)
1439 {
1440 struct lbs_private *priv = wiphy_priv(wiphy);
1441
1442 if (netdev == priv->mesh_dev)
1443 return -EOPNOTSUPP;
1444
1445 if (key_index != priv->wep_tx_key) {
1446 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1447 priv->wep_tx_key = key_index;
1448 lbs_set_wep_keys(priv);
1449 }
1450
1451 return 0;
1452 }
1453
1454
lbs_cfg_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 idx,bool pairwise,const u8 * mac_addr,struct key_params * params)1455 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1456 u8 idx, bool pairwise, const u8 *mac_addr,
1457 struct key_params *params)
1458 {
1459 struct lbs_private *priv = wiphy_priv(wiphy);
1460 u16 key_info;
1461 u16 key_type;
1462 int ret = 0;
1463
1464 if (netdev == priv->mesh_dev)
1465 return -EOPNOTSUPP;
1466
1467 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1468 params->cipher, mac_addr);
1469 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1470 idx, params->key_len);
1471 if (params->key_len)
1472 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1473 params->key, params->key_len);
1474
1475 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1476 if (params->seq_len)
1477 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1478 params->seq, params->seq_len);
1479
1480 switch (params->cipher) {
1481 case WLAN_CIPHER_SUITE_WEP40:
1482 case WLAN_CIPHER_SUITE_WEP104:
1483 /* actually compare if something has changed ... */
1484 if ((priv->wep_key_len[idx] != params->key_len) ||
1485 memcmp(priv->wep_key[idx],
1486 params->key, params->key_len) != 0) {
1487 priv->wep_key_len[idx] = params->key_len;
1488 memcpy(priv->wep_key[idx],
1489 params->key, params->key_len);
1490 lbs_set_wep_keys(priv);
1491 }
1492 break;
1493 case WLAN_CIPHER_SUITE_TKIP:
1494 case WLAN_CIPHER_SUITE_CCMP:
1495 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1496 ? KEY_INFO_WPA_UNICAST
1497 : KEY_INFO_WPA_MCAST);
1498 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1499 ? KEY_TYPE_ID_TKIP
1500 : KEY_TYPE_ID_AES;
1501 lbs_set_key_material(priv,
1502 key_type,
1503 key_info,
1504 params->key, params->key_len);
1505 break;
1506 default:
1507 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1508 ret = -ENOTSUPP;
1509 break;
1510 }
1511
1512 return ret;
1513 }
1514
1515
lbs_cfg_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)1516 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1517 u8 key_index, bool pairwise, const u8 *mac_addr)
1518 {
1519
1520 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1521 key_index, mac_addr);
1522
1523 #ifdef TODO
1524 struct lbs_private *priv = wiphy_priv(wiphy);
1525 /*
1526 * I think can keep this a NO-OP, because:
1527
1528 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1529 * - neither "iw" nor "wpa_supplicant" won't call this during
1530 * an ongoing connection
1531 * - TODO: but I have to check if this is still true when
1532 * I set the AP to periodic re-keying
1533 * - we've not kzallec() something when we've added a key at
1534 * lbs_cfg_connect() or lbs_cfg_add_key().
1535 *
1536 * This causes lbs_cfg_del_key() only called at disconnect time,
1537 * where we'd just waste time deleting a key that is not going
1538 * to be used anyway.
1539 */
1540 if (key_index < 3 && priv->wep_key_len[key_index]) {
1541 priv->wep_key_len[key_index] = 0;
1542 lbs_set_wep_keys(priv);
1543 }
1544 #endif
1545
1546 return 0;
1547 }
1548
1549
1550 /*
1551 * Get station
1552 */
1553
lbs_cfg_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)1554 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1555 const u8 *mac, struct station_info *sinfo)
1556 {
1557 struct lbs_private *priv = wiphy_priv(wiphy);
1558 s8 signal, noise;
1559 int ret;
1560 size_t i;
1561
1562 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1563 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1564 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1565 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1566 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1567 sinfo->tx_packets = priv->dev->stats.tx_packets;
1568 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1569 sinfo->rx_packets = priv->dev->stats.rx_packets;
1570
1571 /* Get current RSSI */
1572 ret = lbs_get_rssi(priv, &signal, &noise);
1573 if (ret == 0) {
1574 sinfo->signal = signal;
1575 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1576 }
1577
1578 /* Convert priv->cur_rate from hw_value to NL80211 value */
1579 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1580 if (priv->cur_rate == lbs_rates[i].hw_value) {
1581 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1582 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1583 break;
1584 }
1585 }
1586
1587 return 0;
1588 }
1589
1590
1591
1592
1593 /*
1594 * Change interface
1595 */
1596
lbs_change_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)1597 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1598 enum nl80211_iftype type,
1599 struct vif_params *params)
1600 {
1601 struct lbs_private *priv = wiphy_priv(wiphy);
1602 int ret = 0;
1603
1604 if (dev == priv->mesh_dev)
1605 return -EOPNOTSUPP;
1606
1607 switch (type) {
1608 case NL80211_IFTYPE_MONITOR:
1609 case NL80211_IFTYPE_STATION:
1610 case NL80211_IFTYPE_ADHOC:
1611 break;
1612 default:
1613 return -EOPNOTSUPP;
1614 }
1615
1616 if (priv->iface_running)
1617 ret = lbs_set_iface_type(priv, type);
1618
1619 if (!ret)
1620 priv->wdev->iftype = type;
1621
1622 return ret;
1623 }
1624
1625
1626
1627 /*
1628 * IBSS (Ad-Hoc)
1629 */
1630
1631 /*
1632 * The firmware needs the following bits masked out of the beacon-derived
1633 * capability field when associating/joining to a BSS:
1634 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1635 */
1636 #define CAPINFO_MASK (~(0xda00))
1637
1638
lbs_join_post(struct lbs_private * priv,struct cfg80211_ibss_params * params,u8 * bssid,u16 capability)1639 static void lbs_join_post(struct lbs_private *priv,
1640 struct cfg80211_ibss_params *params,
1641 u8 *bssid, u16 capability)
1642 {
1643 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1644 2 + 4 + /* basic rates */
1645 2 + 1 + /* DS parameter */
1646 2 + 2 + /* atim */
1647 2 + 8]; /* extended rates */
1648 u8 *fake = fake_ie;
1649 struct cfg80211_bss *bss;
1650
1651 /*
1652 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1653 * the real IE from the firmware. So we fabricate a fake IE based on
1654 * what the firmware actually sends (sniffed with wireshark).
1655 */
1656 /* Fake SSID IE */
1657 *fake++ = WLAN_EID_SSID;
1658 *fake++ = params->ssid_len;
1659 memcpy(fake, params->ssid, params->ssid_len);
1660 fake += params->ssid_len;
1661 /* Fake supported basic rates IE */
1662 *fake++ = WLAN_EID_SUPP_RATES;
1663 *fake++ = 4;
1664 *fake++ = 0x82;
1665 *fake++ = 0x84;
1666 *fake++ = 0x8b;
1667 *fake++ = 0x96;
1668 /* Fake DS channel IE */
1669 *fake++ = WLAN_EID_DS_PARAMS;
1670 *fake++ = 1;
1671 *fake++ = params->chandef.chan->hw_value;
1672 /* Fake IBSS params IE */
1673 *fake++ = WLAN_EID_IBSS_PARAMS;
1674 *fake++ = 2;
1675 *fake++ = 0; /* ATIM=0 */
1676 *fake++ = 0;
1677 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1678 * but I don't know how this could be checked */
1679 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1680 *fake++ = 8;
1681 *fake++ = 0x0c;
1682 *fake++ = 0x12;
1683 *fake++ = 0x18;
1684 *fake++ = 0x24;
1685 *fake++ = 0x30;
1686 *fake++ = 0x48;
1687 *fake++ = 0x60;
1688 *fake++ = 0x6c;
1689 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1690
1691 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1692 params->chandef.chan,
1693 CFG80211_BSS_FTYPE_UNKNOWN,
1694 bssid,
1695 0,
1696 capability,
1697 params->beacon_interval,
1698 fake_ie, fake - fake_ie,
1699 0, GFP_KERNEL);
1700 cfg80211_put_bss(priv->wdev->wiphy, bss);
1701
1702 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1703 GFP_KERNEL);
1704
1705 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1706 priv->connect_status = LBS_CONNECTED;
1707 netif_carrier_on(priv->dev);
1708 if (!priv->tx_pending_len)
1709 netif_wake_queue(priv->dev);
1710 }
1711
lbs_ibss_join_existing(struct lbs_private * priv,struct cfg80211_ibss_params * params,struct cfg80211_bss * bss)1712 static int lbs_ibss_join_existing(struct lbs_private *priv,
1713 struct cfg80211_ibss_params *params,
1714 struct cfg80211_bss *bss)
1715 {
1716 const u8 *rates_eid;
1717 struct cmd_ds_802_11_ad_hoc_join cmd;
1718 u8 preamble = RADIO_PREAMBLE_SHORT;
1719 int ret = 0;
1720
1721 /* TODO: set preamble based on scan result */
1722 ret = lbs_set_radio(priv, preamble, 1);
1723 if (ret)
1724 goto out;
1725
1726 /*
1727 * Example CMD_802_11_AD_HOC_JOIN command:
1728 *
1729 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1730 * size 65 00
1731 * sequence xx xx
1732 * result 00 00
1733 * bssid 02 27 27 97 2f 96
1734 * ssid 49 42 53 53 00 00 00 00
1735 * 00 00 00 00 00 00 00 00
1736 * 00 00 00 00 00 00 00 00
1737 * 00 00 00 00 00 00 00 00
1738 * type 02 CMD_BSS_TYPE_IBSS
1739 * beacon period 64 00
1740 * dtim period 00
1741 * timestamp 00 00 00 00 00 00 00 00
1742 * localtime 00 00 00 00 00 00 00 00
1743 * IE DS 03
1744 * IE DS len 01
1745 * IE DS channel 01
1746 * reserveed 00 00 00 00
1747 * IE IBSS 06
1748 * IE IBSS len 02
1749 * IE IBSS atim 00 00
1750 * reserved 00 00 00 00
1751 * capability 02 00
1752 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1753 * fail timeout ff 00
1754 * probe delay 00 00
1755 */
1756 memset(&cmd, 0, sizeof(cmd));
1757 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1758
1759 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1760 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1761 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1762 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1763 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1764 cmd.bss.ds.header.len = 1;
1765 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1766 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1767 cmd.bss.ibss.header.len = 2;
1768 cmd.bss.ibss.atimwindow = 0;
1769 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1770
1771 /* set rates to the intersection of our rates and the rates in the
1772 bss */
1773 rcu_read_lock();
1774 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1775 if (!rates_eid) {
1776 lbs_add_rates(cmd.bss.rates);
1777 } else {
1778 int hw, i;
1779 u8 rates_max = rates_eid[1];
1780 u8 *rates = cmd.bss.rates;
1781 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1782 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1783 for (i = 0; i < rates_max; i++) {
1784 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1785 u8 rate = rates_eid[i+2];
1786 if (rate == 0x02 || rate == 0x04 ||
1787 rate == 0x0b || rate == 0x16)
1788 rate |= 0x80;
1789 *rates++ = rate;
1790 }
1791 }
1792 }
1793 }
1794 rcu_read_unlock();
1795
1796 /* Only v8 and below support setting this */
1797 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1798 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1799 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1800 }
1801 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1802 if (ret)
1803 goto out;
1804
1805 /*
1806 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1807 *
1808 * response 2c 80
1809 * size 09 00
1810 * sequence xx xx
1811 * result 00 00
1812 * reserved 00
1813 */
1814 lbs_join_post(priv, params, bss->bssid, bss->capability);
1815
1816 out:
1817 return ret;
1818 }
1819
1820
1821
lbs_ibss_start_new(struct lbs_private * priv,struct cfg80211_ibss_params * params)1822 static int lbs_ibss_start_new(struct lbs_private *priv,
1823 struct cfg80211_ibss_params *params)
1824 {
1825 struct cmd_ds_802_11_ad_hoc_start cmd;
1826 struct cmd_ds_802_11_ad_hoc_result *resp =
1827 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1828 u8 preamble = RADIO_PREAMBLE_SHORT;
1829 int ret = 0;
1830 u16 capability;
1831
1832 ret = lbs_set_radio(priv, preamble, 1);
1833 if (ret)
1834 goto out;
1835
1836 /*
1837 * Example CMD_802_11_AD_HOC_START command:
1838 *
1839 * command 2b 00 CMD_802_11_AD_HOC_START
1840 * size b1 00
1841 * sequence xx xx
1842 * result 00 00
1843 * ssid 54 45 53 54 00 00 00 00
1844 * 00 00 00 00 00 00 00 00
1845 * 00 00 00 00 00 00 00 00
1846 * 00 00 00 00 00 00 00 00
1847 * bss type 02
1848 * beacon period 64 00
1849 * dtim period 00
1850 * IE IBSS 06
1851 * IE IBSS len 02
1852 * IE IBSS atim 00 00
1853 * reserved 00 00 00 00
1854 * IE DS 03
1855 * IE DS len 01
1856 * IE DS channel 01
1857 * reserved 00 00 00 00
1858 * probe delay 00 00
1859 * capability 02 00
1860 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1861 * 0c 12 18 24 30 48 60 6c
1862 * padding 100 bytes
1863 */
1864 memset(&cmd, 0, sizeof(cmd));
1865 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1866 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1867 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1868 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1869 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1870 cmd.ibss.header.len = 2;
1871 cmd.ibss.atimwindow = 0;
1872 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1873 cmd.ds.header.len = 1;
1874 cmd.ds.channel = params->chandef.chan->hw_value;
1875 /* Only v8 and below support setting probe delay */
1876 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1877 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1878 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1879 capability = WLAN_CAPABILITY_IBSS;
1880 cmd.capability = cpu_to_le16(capability);
1881 lbs_add_rates(cmd.rates);
1882
1883
1884 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1885 if (ret)
1886 goto out;
1887
1888 /*
1889 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1890 *
1891 * response 2b 80
1892 * size 14 00
1893 * sequence xx xx
1894 * result 00 00
1895 * reserved 00
1896 * bssid 02 2b 7b 0f 86 0e
1897 */
1898 lbs_join_post(priv, params, resp->bssid, capability);
1899
1900 out:
1901 return ret;
1902 }
1903
1904
lbs_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1905 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1906 struct cfg80211_ibss_params *params)
1907 {
1908 struct lbs_private *priv = wiphy_priv(wiphy);
1909 int ret = 0;
1910 struct cfg80211_bss *bss;
1911
1912 if (dev == priv->mesh_dev)
1913 return -EOPNOTSUPP;
1914
1915 if (!params->chandef.chan) {
1916 ret = -ENOTSUPP;
1917 goto out;
1918 }
1919
1920 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1921 if (ret)
1922 goto out;
1923
1924 /* Search if someone is beaconing. This assumes that the
1925 * bss list is populated already */
1926 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1927 params->ssid, params->ssid_len,
1928 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1929
1930 if (bss) {
1931 ret = lbs_ibss_join_existing(priv, params, bss);
1932 cfg80211_put_bss(wiphy, bss);
1933 } else
1934 ret = lbs_ibss_start_new(priv, params);
1935
1936
1937 out:
1938 return ret;
1939 }
1940
1941
lbs_leave_ibss(struct wiphy * wiphy,struct net_device * dev)1942 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1943 {
1944 struct lbs_private *priv = wiphy_priv(wiphy);
1945 struct cmd_ds_802_11_ad_hoc_stop cmd;
1946 int ret = 0;
1947
1948 if (dev == priv->mesh_dev)
1949 return -EOPNOTSUPP;
1950
1951 memset(&cmd, 0, sizeof(cmd));
1952 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1953 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1954
1955 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1956 lbs_mac_event_disconnected(priv, true);
1957
1958 return ret;
1959 }
1960
1961
1962
lbs_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)1963 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1964 bool enabled, int timeout)
1965 {
1966 struct lbs_private *priv = wiphy_priv(wiphy);
1967
1968 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
1969 if (!enabled)
1970 return 0;
1971 else
1972 return -EINVAL;
1973 }
1974 /* firmware does not work well with too long latency with power saving
1975 * enabled, so do not enable it if there is only polling, no
1976 * interrupts (like in some sdio hosts which can only
1977 * poll for sdio irqs)
1978 */
1979 if (priv->is_polling) {
1980 if (!enabled)
1981 return 0;
1982 else
1983 return -EINVAL;
1984 }
1985 if (!enabled) {
1986 priv->psmode = LBS802_11POWERMODECAM;
1987 if (priv->psstate != PS_STATE_FULL_POWER)
1988 lbs_set_ps_mode(priv,
1989 PS_MODE_ACTION_EXIT_PS,
1990 true);
1991 return 0;
1992 }
1993 if (priv->psmode != LBS802_11POWERMODECAM)
1994 return 0;
1995 priv->psmode = LBS802_11POWERMODEMAX_PSP;
1996 if (priv->connect_status == LBS_CONNECTED)
1997 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
1998 return 0;
1999 }
2000
2001 /*
2002 * Initialization
2003 */
2004
2005 static const struct cfg80211_ops lbs_cfg80211_ops = {
2006 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2007 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2008 .scan = lbs_cfg_scan,
2009 .connect = lbs_cfg_connect,
2010 .disconnect = lbs_cfg_disconnect,
2011 .add_key = lbs_cfg_add_key,
2012 .del_key = lbs_cfg_del_key,
2013 .set_default_key = lbs_cfg_set_default_key,
2014 .get_station = lbs_cfg_get_station,
2015 .change_virtual_intf = lbs_change_intf,
2016 .join_ibss = lbs_join_ibss,
2017 .leave_ibss = lbs_leave_ibss,
2018 .set_power_mgmt = lbs_set_power_mgmt,
2019 };
2020
2021
2022 /*
2023 * At this time lbs_private *priv doesn't even exist, so we just allocate
2024 * memory and don't initialize the wiphy further. This is postponed until we
2025 * can talk to the firmware and happens at registration time in
2026 * lbs_cfg_wiphy_register().
2027 */
lbs_cfg_alloc(struct device * dev)2028 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2029 {
2030 int ret = 0;
2031 struct wireless_dev *wdev;
2032
2033 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2034 if (!wdev)
2035 return ERR_PTR(-ENOMEM);
2036
2037 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2038 if (!wdev->wiphy) {
2039 dev_err(dev, "cannot allocate wiphy\n");
2040 ret = -ENOMEM;
2041 goto err_wiphy_new;
2042 }
2043
2044 return wdev;
2045
2046 err_wiphy_new:
2047 kfree(wdev);
2048 return ERR_PTR(ret);
2049 }
2050
2051
lbs_cfg_set_regulatory_hint(struct lbs_private * priv)2052 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2053 {
2054 struct region_code_mapping {
2055 const char *cn;
2056 int code;
2057 };
2058
2059 /* Section 5.17.2 */
2060 static const struct region_code_mapping regmap[] = {
2061 {"US ", 0x10}, /* US FCC */
2062 {"CA ", 0x20}, /* Canada */
2063 {"EU ", 0x30}, /* ETSI */
2064 {"ES ", 0x31}, /* Spain */
2065 {"FR ", 0x32}, /* France */
2066 {"JP ", 0x40}, /* Japan */
2067 };
2068 size_t i;
2069
2070 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2071 if (regmap[i].code == priv->regioncode) {
2072 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2073 break;
2074 }
2075 }
2076
lbs_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)2077 static void lbs_reg_notifier(struct wiphy *wiphy,
2078 struct regulatory_request *request)
2079 {
2080 struct lbs_private *priv = wiphy_priv(wiphy);
2081
2082 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2083 if (lbs_iface_active(priv))
2084 lbs_set_11d_domain_info(priv);
2085 }
2086
2087 /*
2088 * This function get's called after lbs_setup_firmware() determined the
2089 * firmware capabities. So we can setup the wiphy according to our
2090 * hardware/firmware.
2091 */
lbs_cfg_register(struct lbs_private * priv)2092 int lbs_cfg_register(struct lbs_private *priv)
2093 {
2094 struct wireless_dev *wdev = priv->wdev;
2095 int ret;
2096
2097 wdev->wiphy->max_scan_ssids = 1;
2098 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2099
2100 wdev->wiphy->interface_modes =
2101 BIT(NL80211_IFTYPE_STATION) |
2102 BIT(NL80211_IFTYPE_ADHOC);
2103 if (lbs_rtap_supported(priv))
2104 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2105 if (lbs_mesh_activated(priv))
2106 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2107
2108 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2109
2110 /*
2111 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2112 * never seen a firmware without WPA
2113 */
2114 wdev->wiphy->cipher_suites = cipher_suites;
2115 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2116 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2117
2118 ret = wiphy_register(wdev->wiphy);
2119 if (ret < 0)
2120 pr_err("cannot register wiphy device\n");
2121
2122 priv->wiphy_registered = true;
2123
2124 ret = register_netdev(priv->dev);
2125 if (ret)
2126 pr_err("cannot register network device\n");
2127
2128 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2129
2130 lbs_cfg_set_regulatory_hint(priv);
2131
2132 return ret;
2133 }
2134
lbs_scan_deinit(struct lbs_private * priv)2135 void lbs_scan_deinit(struct lbs_private *priv)
2136 {
2137 cancel_delayed_work_sync(&priv->scan_work);
2138 }
2139
2140
lbs_cfg_free(struct lbs_private * priv)2141 void lbs_cfg_free(struct lbs_private *priv)
2142 {
2143 struct wireless_dev *wdev = priv->wdev;
2144
2145 if (!wdev)
2146 return;
2147
2148 if (priv->wiphy_registered)
2149 wiphy_unregister(wdev->wiphy);
2150
2151 if (wdev->wiphy)
2152 wiphy_free(wdev->wiphy);
2153
2154 kfree(wdev);
2155 }
2156
