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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
34static 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 */
59static 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
74static 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
82static 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 */
106static 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 */
133static 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
164static 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
189static 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 */
250static 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 */
269static u8 *
270add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
271{
272 int hw, ap, ap_max = ie[1];
273 u8 hw_rate;
274
275 /* Advance past IE header */
276 ie += 2;
277
278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
279
280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
281 hw_rate = lbs_rates[hw].bitrate / 5;
282 for (ap = 0; ap < ap_max; ap++) {
283 if (hw_rate == (ie[ap] & 0x7f)) {
284 *tlv++ = ie[ap];
285 *nrates = *nrates + 1;
286 }
287 }
288 }
289 return tlv;
290}
291
292/*
293 * Adds a TLV with all rates the hardware *and* BSS supports.
294 */
295static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
296{
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
299 int n = 0;
300
301 rcu_read_lock();
302 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
303 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
304
305 /*
306 * 01 00 TLV_TYPE_RATES
307 * 04 00 len
308 * 82 84 8b 96 rates
309 */
310 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
311 tlv += sizeof(rate_tlv->header);
312
313 /* Add basic rates */
314 if (rates_eid) {
315 tlv = add_ie_rates(tlv, rates_eid, &n);
316
317 /* Add extended rates, if any */
318 if (ext_rates_eid)
319 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
320 } else {
321 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
322 /* Fallback: add basic 802.11b rates */
323 *tlv++ = 0x82;
324 *tlv++ = 0x84;
325 *tlv++ = 0x8b;
326 *tlv++ = 0x96;
327 n = 4;
328 }
329 rcu_read_unlock();
330
331 rate_tlv->header.len = cpu_to_le16(n);
332 return sizeof(rate_tlv->header) + n;
333}
334
335
336/*
337 * Add auth type TLV.
338 *
339 * This is only needed for newer firmware (V9 and up).
340 */
341#define LBS_MAX_AUTH_TYPE_TLV_SIZE \
342 sizeof(struct mrvl_ie_auth_type)
343
344static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
345{
346 struct mrvl_ie_auth_type *auth = (void *) tlv;
347
348 /*
349 * 1f 01 TLV_TYPE_AUTH_TYPE
350 * 01 00 len
351 * 01 auth type
352 */
353 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
354 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
355 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
356 return sizeof(*auth);
357}
358
359
360/*
361 * Add channel (phy ds) TLV
362 */
363#define LBS_MAX_CHANNEL_TLV_SIZE \
364 sizeof(struct mrvl_ie_header)
365
366static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
367{
368 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
369
370 /*
371 * 03 00 TLV_TYPE_PHY_DS
372 * 01 00 len
373 * 06 channel
374 */
375 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
376 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
377 ds->channel = channel;
378 return sizeof(*ds);
379}
380
381
382/*
383 * Add (empty) CF param TLV of the form:
384 */
385#define LBS_MAX_CF_PARAM_TLV_SIZE \
386 sizeof(struct mrvl_ie_header)
387
388static int lbs_add_cf_param_tlv(u8 *tlv)
389{
390 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
391
392 /*
393 * 04 00 TLV_TYPE_CF
394 * 06 00 len
395 * 00 cfpcnt
396 * 00 cfpperiod
397 * 00 00 cfpmaxduration
398 * 00 00 cfpdurationremaining
399 */
400 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
401 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
402 return sizeof(*cf);
403}
404
405/*
406 * Add WPA TLV
407 */
408#define LBS_MAX_WPA_TLV_SIZE \
409 (sizeof(struct mrvl_ie_header) \
410 + 128 /* TODO: I guessed the size */)
411
412static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
413{
414 size_t tlv_len;
415
416 /*
417 * We need just convert an IE to an TLV. IEs use u8 for the header,
418 * u8 type
419 * u8 len
420 * u8[] data
421 * but TLVs use __le16 instead:
422 * __le16 type
423 * __le16 len
424 * u8[] data
425 */
426 *tlv++ = *ie++;
427 *tlv++ = 0;
428 tlv_len = *tlv++ = *ie++;
429 *tlv++ = 0;
430 while (tlv_len--)
431 *tlv++ = *ie++;
432 /* the TLV is two bytes larger than the IE */
433 return ie_len + 2;
434}
435
436/*
437 * Set Channel
438 */
439
440static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
441 struct cfg80211_chan_def *chandef)
442{
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
447 chandef->chan->center_freq,
448 cfg80211_get_chandef_type(chandef));
449
450 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
451 goto out;
452
453 ret = lbs_set_channel(priv, chandef->chan->hw_value);
454
455 out:
456 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
457 return ret;
458}
459
460static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
461 struct net_device *netdev,
462 struct ieee80211_channel *channel)
463{
464 struct lbs_private *priv = wiphy_priv(wiphy);
465 int ret = -ENOTSUPP;
466
467 lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
468 netdev_name(netdev), channel->center_freq);
469
470 if (netdev != priv->mesh_dev)
471 goto out;
472
473 ret = lbs_mesh_set_channel(priv, channel->hw_value);
474
475 out:
476 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
477 return ret;
478}
479
480
481
482/*
483 * Scanning
484 */
485
486/*
487 * When scanning, the firmware doesn't send a nul packet with the power-safe
488 * bit to the AP. So we cannot stay away from our current channel too long,
489 * otherwise we loose data. So take a "nap" while scanning every other
490 * while.
491 */
492#define LBS_SCAN_BEFORE_NAP 4
493
494
495/*
496 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
497 * which isn't really an RSSI, as it becomes larger when moving away from
498 * the AP. Anyway, we need to convert that into mBm.
499 */
500#define LBS_SCAN_RSSI_TO_MBM(rssi) \
501 ((-(int)rssi + 3)*100)
502
503static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
504 struct cmd_header *resp)
505{
506 struct cfg80211_bss *bss;
507 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
508 int bsssize;
509 const u8 *pos;
510 const u8 *tsfdesc;
511 int tsfsize;
512 int i;
513 int ret = -EILSEQ;
514
515 lbs_deb_enter(LBS_DEB_CFG80211);
516
517 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
518
519 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
520 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
521
522 if (scanresp->nr_sets == 0) {
523 ret = 0;
524 goto done;
525 }
526
527 /*
528 * The general layout of the scan response is described in chapter
529 * 5.7.1. Basically we have a common part, then any number of BSS
530 * descriptor sections. Finally we have section with the same number
531 * of TSFs.
532 *
533 * cmd_ds_802_11_scan_rsp
534 * cmd_header
535 * pos_size
536 * nr_sets
537 * bssdesc 1
538 * bssid
539 * rssi
540 * timestamp
541 * intvl
542 * capa
543 * IEs
544 * bssdesc 2
545 * bssdesc n
546 * MrvlIEtypes_TsfFimestamp_t
547 * TSF for BSS 1
548 * TSF for BSS 2
549 * TSF for BSS n
550 */
551
552 pos = scanresp->bssdesc_and_tlvbuffer;
553
554 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
555 scanresp->bssdescriptsize);
556
557 tsfdesc = pos + bsssize;
558 tsfsize = 4 + 8 * scanresp->nr_sets;
559 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
560
561 /* Validity check: we expect a Marvell-Local TLV */
562 i = get_unaligned_le16(tsfdesc);
563 tsfdesc += 2;
564 if (i != TLV_TYPE_TSFTIMESTAMP) {
565 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
566 goto done;
567 }
568
569 /*
570 * Validity check: the TLV holds TSF values with 8 bytes each, so
571 * the size in the TLV must match the nr_sets value
572 */
573 i = get_unaligned_le16(tsfdesc);
574 tsfdesc += 2;
575 if (i / 8 != scanresp->nr_sets) {
576 lbs_deb_scan("scan response: invalid number of TSF timestamp "
577 "sets (expected %d got %d)\n", scanresp->nr_sets,
578 i / 8);
579 goto done;
580 }
581
582 for (i = 0; i < scanresp->nr_sets; i++) {
583 const u8 *bssid;
584 const u8 *ie;
585 int left;
586 int ielen;
587 int rssi;
588 u16 intvl;
589 u16 capa;
590 int chan_no = -1;
591 const u8 *ssid = NULL;
592 u8 ssid_len = 0;
593 DECLARE_SSID_BUF(ssid_buf);
594
595 int len = get_unaligned_le16(pos);
596 pos += 2;
597
598 /* BSSID */
599 bssid = pos;
600 pos += ETH_ALEN;
601 /* RSSI */
602 rssi = *pos++;
603 /* Packet time stamp */
604 pos += 8;
605 /* Beacon interval */
606 intvl = get_unaligned_le16(pos);
607 pos += 2;
608 /* Capabilities */
609 capa = get_unaligned_le16(pos);
610 pos += 2;
611
612 /* To find out the channel, we must parse the IEs */
613 ie = pos;
614 /*
615 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
616 * interval, capabilities
617 */
618 ielen = left = len - (6 + 1 + 8 + 2 + 2);
619 while (left >= 2) {
620 u8 id, elen;
621 id = *pos++;
622 elen = *pos++;
623 left -= 2;
624 if (elen > left) {
625 lbs_deb_scan("scan response: invalid IE fmt\n");
626 goto done;
627 }
628
629 if (id == WLAN_EID_DS_PARAMS)
630 chan_no = *pos;
631 if (id == WLAN_EID_SSID) {
632 ssid = pos;
633 ssid_len = elen;
634 }
635 left -= elen;
636 pos += elen;
637 }
638
639 /* No channel, no luck */
640 if (chan_no != -1) {
641 struct wiphy *wiphy = priv->wdev->wiphy;
642 int freq = ieee80211_channel_to_frequency(chan_no,
643 IEEE80211_BAND_2GHZ);
644 struct ieee80211_channel *channel =
645 ieee80211_get_channel(wiphy, freq);
646
647 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
648 "%d dBm\n",
649 bssid, capa, chan_no,
650 print_ssid(ssid_buf, ssid, ssid_len),
651 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
652
653 if (channel &&
654 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
655 bss = cfg80211_inform_bss(wiphy, channel,
656 bssid, get_unaligned_le64(tsfdesc),
657 capa, intvl, ie, ielen,
658 LBS_SCAN_RSSI_TO_MBM(rssi),
659 GFP_KERNEL);
660 cfg80211_put_bss(wiphy, bss);
661 }
662 } else
663 lbs_deb_scan("scan response: missing BSS channel IE\n");
664
665 tsfdesc += 8;
666 }
667 ret = 0;
668
669 done:
670 lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
671 return ret;
672}
673
674
675/*
676 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
677 * TLV and a rates TLV. Determine the maximum size of them:
678 */
679#define LBS_SCAN_MAX_CMD_SIZE \
680 (sizeof(struct cmd_ds_802_11_scan) \
681 + LBS_MAX_SSID_TLV_SIZE \
682 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
683 + LBS_MAX_RATES_TLV_SIZE)
684
685/*
686 * Assumes priv->scan_req is initialized and valid
687 * Assumes priv->scan_channel is initialized
688 */
689static void lbs_scan_worker(struct work_struct *work)
690{
691 struct lbs_private *priv =
692 container_of(work, struct lbs_private, scan_work.work);
693 struct cmd_ds_802_11_scan *scan_cmd;
694 u8 *tlv; /* pointer into our current, growing TLV storage area */
695 int last_channel;
696 int running, carrier;
697
698 lbs_deb_enter(LBS_DEB_SCAN);
699
700 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
701 if (scan_cmd == NULL)
702 goto out_no_scan_cmd;
703
704 /* prepare fixed part of scan command */
705 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
706
707 /* stop network while we're away from our main channel */
708 running = !netif_queue_stopped(priv->dev);
709 carrier = netif_carrier_ok(priv->dev);
710 if (running)
711 netif_stop_queue(priv->dev);
712 if (carrier)
713 netif_carrier_off(priv->dev);
714
715 /* prepare fixed part of scan command */
716 tlv = scan_cmd->tlvbuffer;
717
718 /* add SSID TLV */
719 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
720 tlv += lbs_add_ssid_tlv(tlv,
721 priv->scan_req->ssids[0].ssid,
722 priv->scan_req->ssids[0].ssid_len);
723
724 /* add channel TLVs */
725 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
726 if (last_channel > priv->scan_req->n_channels)
727 last_channel = priv->scan_req->n_channels;
728 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
729 priv->scan_req->n_ssids);
730
731 /* add rates TLV */
732 tlv += lbs_add_supported_rates_tlv(tlv);
733
734 if (priv->scan_channel < priv->scan_req->n_channels) {
735 cancel_delayed_work(&priv->scan_work);
736 if (netif_running(priv->dev))
737 queue_delayed_work(priv->work_thread, &priv->scan_work,
738 msecs_to_jiffies(300));
739 }
740
741 /* This is the final data we are about to send */
742 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
743 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
744 sizeof(*scan_cmd));
745 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
746 tlv - scan_cmd->tlvbuffer);
747
748 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
749 le16_to_cpu(scan_cmd->hdr.size),
750 lbs_ret_scan, 0);
751
752 if (priv->scan_channel >= priv->scan_req->n_channels) {
753 /* Mark scan done */
754 cancel_delayed_work(&priv->scan_work);
755 lbs_scan_done(priv);
756 }
757
758 /* Restart network */
759 if (carrier)
760 netif_carrier_on(priv->dev);
761 if (running && !priv->tx_pending_len)
762 netif_wake_queue(priv->dev);
763
764 kfree(scan_cmd);
765
766 /* Wake up anything waiting on scan completion */
767 if (priv->scan_req == NULL) {
768 lbs_deb_scan("scan: waking up waiters\n");
769 wake_up_all(&priv->scan_q);
770 }
771
772 out_no_scan_cmd:
773 lbs_deb_leave(LBS_DEB_SCAN);
774}
775
776static void _internal_start_scan(struct lbs_private *priv, bool internal,
777 struct cfg80211_scan_request *request)
778{
779 lbs_deb_enter(LBS_DEB_CFG80211);
780
781 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
782 request->n_ssids, request->n_channels, request->ie_len);
783
784 priv->scan_channel = 0;
785 priv->scan_req = request;
786 priv->internal_scan = internal;
787
788 queue_delayed_work(priv->work_thread, &priv->scan_work,
789 msecs_to_jiffies(50));
790
791 lbs_deb_leave(LBS_DEB_CFG80211);
792}
793
794/*
795 * Clean up priv->scan_req. Should be used to handle the allocation details.
796 */
797void lbs_scan_done(struct lbs_private *priv)
798{
799 WARN_ON(!priv->scan_req);
800
801 if (priv->internal_scan)
802 kfree(priv->scan_req);
803 else
804 cfg80211_scan_done(priv->scan_req, false);
805
806 priv->scan_req = NULL;
807}
808
809static int lbs_cfg_scan(struct wiphy *wiphy,
810 struct cfg80211_scan_request *request)
811{
812 struct lbs_private *priv = wiphy_priv(wiphy);
813 int ret = 0;
814
815 lbs_deb_enter(LBS_DEB_CFG80211);
816
817 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
818 /* old scan request not yet processed */
819 ret = -EAGAIN;
820 goto out;
821 }
822
823 _internal_start_scan(priv, false, request);
824
825 if (priv->surpriseremoved)
826 ret = -EIO;
827
828 out:
829 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
830 return ret;
831}
832
833
834
835
836/*
837 * Events
838 */
839
840void lbs_send_disconnect_notification(struct lbs_private *priv)
841{
842 lbs_deb_enter(LBS_DEB_CFG80211);
843
844 cfg80211_disconnected(priv->dev,
845 0,
846 NULL, 0,
847 GFP_KERNEL);
848
849 lbs_deb_leave(LBS_DEB_CFG80211);
850}
851
852void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
853{
854 lbs_deb_enter(LBS_DEB_CFG80211);
855
856 cfg80211_michael_mic_failure(priv->dev,
857 priv->assoc_bss,
858 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
859 NL80211_KEYTYPE_GROUP :
860 NL80211_KEYTYPE_PAIRWISE,
861 -1,
862 NULL,
863 GFP_KERNEL);
864
865 lbs_deb_leave(LBS_DEB_CFG80211);
866}
867
868
869
870
871/*
872 * Connect/disconnect
873 */
874
875
876/*
877 * This removes all WEP keys
878 */
879static int lbs_remove_wep_keys(struct lbs_private *priv)
880{
881 struct cmd_ds_802_11_set_wep cmd;
882 int ret;
883
884 lbs_deb_enter(LBS_DEB_CFG80211);
885
886 memset(&cmd, 0, sizeof(cmd));
887 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
888 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
889 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
890
891 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
892
893 lbs_deb_leave(LBS_DEB_CFG80211);
894 return ret;
895}
896
897/*
898 * Set WEP keys
899 */
900static int lbs_set_wep_keys(struct lbs_private *priv)
901{
902 struct cmd_ds_802_11_set_wep cmd;
903 int i;
904 int ret;
905
906 lbs_deb_enter(LBS_DEB_CFG80211);
907
908 /*
909 * command 13 00
910 * size 50 00
911 * sequence xx xx
912 * result 00 00
913 * action 02 00 ACT_ADD
914 * transmit key 00 00
915 * type for key 1 01 WEP40
916 * type for key 2 00
917 * type for key 3 00
918 * type for key 4 00
919 * key 1 39 39 39 39 39 00 00 00
920 * 00 00 00 00 00 00 00 00
921 * key 2 00 00 00 00 00 00 00 00
922 * 00 00 00 00 00 00 00 00
923 * key 3 00 00 00 00 00 00 00 00
924 * 00 00 00 00 00 00 00 00
925 * key 4 00 00 00 00 00 00 00 00
926 */
927 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
928 priv->wep_key_len[2] || priv->wep_key_len[3]) {
929 /* Only set wep keys if we have at least one of them */
930 memset(&cmd, 0, sizeof(cmd));
931 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
932 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
933 cmd.action = cpu_to_le16(CMD_ACT_ADD);
934
935 for (i = 0; i < 4; i++) {
936 switch (priv->wep_key_len[i]) {
937 case WLAN_KEY_LEN_WEP40:
938 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
939 break;
940 case WLAN_KEY_LEN_WEP104:
941 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
942 break;
943 default:
944 cmd.keytype[i] = 0;
945 break;
946 }
947 memcpy(cmd.keymaterial[i], priv->wep_key[i],
948 priv->wep_key_len[i]);
949 }
950
951 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
952 } else {
953 /* Otherwise remove all wep keys */
954 ret = lbs_remove_wep_keys(priv);
955 }
956
957 lbs_deb_leave(LBS_DEB_CFG80211);
958 return ret;
959}
960
961
962/*
963 * Enable/Disable RSN status
964 */
965static int lbs_enable_rsn(struct lbs_private *priv, int enable)
966{
967 struct cmd_ds_802_11_enable_rsn cmd;
968 int ret;
969
970 lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
971
972 /*
973 * cmd 2f 00
974 * size 0c 00
975 * sequence xx xx
976 * result 00 00
977 * action 01 00 ACT_SET
978 * enable 01 00
979 */
980 memset(&cmd, 0, sizeof(cmd));
981 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
982 cmd.action = cpu_to_le16(CMD_ACT_SET);
983 cmd.enable = cpu_to_le16(enable);
984
985 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
986
987 lbs_deb_leave(LBS_DEB_CFG80211);
988 return ret;
989}
990
991
992/*
993 * Set WPA/WPA key material
994 */
995
996/*
997 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
998 * get rid of WEXT, this should go into host.h
999 */
1000
1001struct cmd_key_material {
1002 struct cmd_header hdr;
1003
1004 __le16 action;
1005 struct MrvlIEtype_keyParamSet param;
1006} __packed;
1007
1008static int lbs_set_key_material(struct lbs_private *priv,
1009 int key_type,
1010 int key_info,
1011 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 */
1057static 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
1104static 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);
1262done:
1263 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1264 return ret;
1265}
1266
1267static struct cfg80211_scan_request *
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
1319static 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 competed\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,
1363 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
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
1447int 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,
1465 GFP_KERNEL);
1466 priv->connect_status = LBS_DISCONNECTED;
1467
1468 return 0;
1469}
1470
1471static 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
1487static 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
1509static 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
1572static 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
1612static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1613 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 |= STATION_INFO_TX_BYTES |
1623 STATION_INFO_TX_PACKETS |
1624 STATION_INFO_RX_BYTES |
1625 STATION_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 |= STATION_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 |= STATION_INFO_TX_BITRATE;
1643 break;
1644 }
1645 }
1646
1647 return 0;
1648}
1649
1650
1651
1652
1653/*
1654 * Change interface
1655 */
1656
1657static 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
1702static 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 bssid,
1759 0,
1760 capability,
1761 params->beacon_interval,
1762 fake_ie, fake - fake_ie,
1763 0, GFP_KERNEL);
1764 cfg80211_put_bss(priv->wdev->wiphy, bss);
1765
1766 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1767 priv->wdev->ssid_len = params->ssid_len;
1768
1769 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1770 GFP_KERNEL);
1771
1772 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1773 priv->connect_status = LBS_CONNECTED;
1774 netif_carrier_on(priv->dev);
1775 if (!priv->tx_pending_len)
1776 netif_wake_queue(priv->dev);
1777
1778 lbs_deb_leave(LBS_DEB_CFG80211);
1779}
1780
1781static int lbs_ibss_join_existing(struct lbs_private *priv,
1782 struct cfg80211_ibss_params *params,
1783 struct cfg80211_bss *bss)
1784{
1785 const u8 *rates_eid;
1786 struct cmd_ds_802_11_ad_hoc_join cmd;
1787 u8 preamble = RADIO_PREAMBLE_SHORT;
1788 int ret = 0;
1789
1790 lbs_deb_enter(LBS_DEB_CFG80211);
1791
1792 /* TODO: set preamble based on scan result */
1793 ret = lbs_set_radio(priv, preamble, 1);
1794 if (ret)
1795 goto out;
1796
1797 /*
1798 * Example CMD_802_11_AD_HOC_JOIN command:
1799 *
1800 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1801 * size 65 00
1802 * sequence xx xx
1803 * result 00 00
1804 * bssid 02 27 27 97 2f 96
1805 * ssid 49 42 53 53 00 00 00 00
1806 * 00 00 00 00 00 00 00 00
1807 * 00 00 00 00 00 00 00 00
1808 * 00 00 00 00 00 00 00 00
1809 * type 02 CMD_BSS_TYPE_IBSS
1810 * beacon period 64 00
1811 * dtim period 00
1812 * timestamp 00 00 00 00 00 00 00 00
1813 * localtime 00 00 00 00 00 00 00 00
1814 * IE DS 03
1815 * IE DS len 01
1816 * IE DS channel 01
1817 * reserveed 00 00 00 00
1818 * IE IBSS 06
1819 * IE IBSS len 02
1820 * IE IBSS atim 00 00
1821 * reserved 00 00 00 00
1822 * capability 02 00
1823 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1824 * fail timeout ff 00
1825 * probe delay 00 00
1826 */
1827 memset(&cmd, 0, sizeof(cmd));
1828 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1829
1830 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1831 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1832 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1833 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1834 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1835 cmd.bss.ds.header.len = 1;
1836 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1837 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1838 cmd.bss.ibss.header.len = 2;
1839 cmd.bss.ibss.atimwindow = 0;
1840 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1841
1842 /* set rates to the intersection of our rates and the rates in the
1843 bss */
1844 rcu_read_lock();
1845 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1846 if (!rates_eid) {
1847 lbs_add_rates(cmd.bss.rates);
1848 } else {
1849 int hw, i;
1850 u8 rates_max = rates_eid[1];
1851 u8 *rates = cmd.bss.rates;
1852 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1853 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1854 for (i = 0; i < rates_max; i++) {
1855 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1856 u8 rate = rates_eid[i+2];
1857 if (rate == 0x02 || rate == 0x04 ||
1858 rate == 0x0b || rate == 0x16)
1859 rate |= 0x80;
1860 *rates++ = rate;
1861 }
1862 }
1863 }
1864 }
1865 rcu_read_unlock();
1866
1867 /* Only v8 and below support setting this */
1868 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1869 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1870 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1871 }
1872 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1873 if (ret)
1874 goto out;
1875
1876 /*
1877 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1878 *
1879 * response 2c 80
1880 * size 09 00
1881 * sequence xx xx
1882 * result 00 00
1883 * reserved 00
1884 */
1885 lbs_join_post(priv, params, bss->bssid, bss->capability);
1886
1887 out:
1888 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1889 return ret;
1890}
1891
1892
1893
1894static int lbs_ibss_start_new(struct lbs_private *priv,
1895 struct cfg80211_ibss_params *params)
1896{
1897 struct cmd_ds_802_11_ad_hoc_start cmd;
1898 struct cmd_ds_802_11_ad_hoc_result *resp =
1899 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1900 u8 preamble = RADIO_PREAMBLE_SHORT;
1901 int ret = 0;
1902 u16 capability;
1903
1904 lbs_deb_enter(LBS_DEB_CFG80211);
1905
1906 ret = lbs_set_radio(priv, preamble, 1);
1907 if (ret)
1908 goto out;
1909
1910 /*
1911 * Example CMD_802_11_AD_HOC_START command:
1912 *
1913 * command 2b 00 CMD_802_11_AD_HOC_START
1914 * size b1 00
1915 * sequence xx xx
1916 * result 00 00
1917 * ssid 54 45 53 54 00 00 00 00
1918 * 00 00 00 00 00 00 00 00
1919 * 00 00 00 00 00 00 00 00
1920 * 00 00 00 00 00 00 00 00
1921 * bss type 02
1922 * beacon period 64 00
1923 * dtim period 00
1924 * IE IBSS 06
1925 * IE IBSS len 02
1926 * IE IBSS atim 00 00
1927 * reserved 00 00 00 00
1928 * IE DS 03
1929 * IE DS len 01
1930 * IE DS channel 01
1931 * reserved 00 00 00 00
1932 * probe delay 00 00
1933 * capability 02 00
1934 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1935 * 0c 12 18 24 30 48 60 6c
1936 * padding 100 bytes
1937 */
1938 memset(&cmd, 0, sizeof(cmd));
1939 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1940 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1941 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1942 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1943 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1944 cmd.ibss.header.len = 2;
1945 cmd.ibss.atimwindow = 0;
1946 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1947 cmd.ds.header.len = 1;
1948 cmd.ds.channel = params->chandef.chan->hw_value;
1949 /* Only v8 and below support setting probe delay */
1950 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1951 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1952 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1953 capability = WLAN_CAPABILITY_IBSS;
1954 cmd.capability = cpu_to_le16(capability);
1955 lbs_add_rates(cmd.rates);
1956
1957
1958 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1959 if (ret)
1960 goto out;
1961
1962 /*
1963 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1964 *
1965 * response 2b 80
1966 * size 14 00
1967 * sequence xx xx
1968 * result 00 00
1969 * reserved 00
1970 * bssid 02 2b 7b 0f 86 0e
1971 */
1972 lbs_join_post(priv, params, resp->bssid, capability);
1973
1974 out:
1975 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1976 return ret;
1977}
1978
1979
1980static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1981 struct cfg80211_ibss_params *params)
1982{
1983 struct lbs_private *priv = wiphy_priv(wiphy);
1984 int ret = 0;
1985 struct cfg80211_bss *bss;
1986 DECLARE_SSID_BUF(ssid_buf);
1987
1988 if (dev == priv->mesh_dev)
1989 return -EOPNOTSUPP;
1990
1991 lbs_deb_enter(LBS_DEB_CFG80211);
1992
1993 if (!params->chandef.chan) {
1994 ret = -ENOTSUPP;
1995 goto out;
1996 }
1997
1998 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1999 if (ret)
2000 goto out;
2001
2002 /* Search if someone is beaconing. This assumes that the
2003 * bss list is populated already */
2004 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2005 params->ssid, params->ssid_len,
2006 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2007
2008 if (bss) {
2009 ret = lbs_ibss_join_existing(priv, params, bss);
2010 cfg80211_put_bss(wiphy, bss);
2011 } else
2012 ret = lbs_ibss_start_new(priv, params);
2013
2014
2015 out:
2016 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2017 return ret;
2018}
2019
2020
2021static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2022{
2023 struct lbs_private *priv = wiphy_priv(wiphy);
2024 struct cmd_ds_802_11_ad_hoc_stop cmd;
2025 int ret = 0;
2026
2027 if (dev == priv->mesh_dev)
2028 return -EOPNOTSUPP;
2029
2030 lbs_deb_enter(LBS_DEB_CFG80211);
2031
2032 memset(&cmd, 0, sizeof(cmd));
2033 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2034 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2035
2036 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2037 lbs_mac_event_disconnected(priv);
2038
2039 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2040 return ret;
2041}
2042
2043
2044
2045
2046/*
2047 * Initialization
2048 */
2049
2050static struct cfg80211_ops lbs_cfg80211_ops = {
2051 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2052 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2053 .scan = lbs_cfg_scan,
2054 .connect = lbs_cfg_connect,
2055 .disconnect = lbs_cfg_disconnect,
2056 .add_key = lbs_cfg_add_key,
2057 .del_key = lbs_cfg_del_key,
2058 .set_default_key = lbs_cfg_set_default_key,
2059 .get_station = lbs_cfg_get_station,
2060 .change_virtual_intf = lbs_change_intf,
2061 .join_ibss = lbs_join_ibss,
2062 .leave_ibss = lbs_leave_ibss,
2063};
2064
2065
2066/*
2067 * At this time lbs_private *priv doesn't even exist, so we just allocate
2068 * memory and don't initialize the wiphy further. This is postponed until we
2069 * can talk to the firmware and happens at registration time in
2070 * lbs_cfg_wiphy_register().
2071 */
2072struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2073{
2074 int ret = 0;
2075 struct wireless_dev *wdev;
2076
2077 lbs_deb_enter(LBS_DEB_CFG80211);
2078
2079 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2080 if (!wdev)
2081 return ERR_PTR(-ENOMEM);
2082
2083 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2084 if (!wdev->wiphy) {
2085 dev_err(dev, "cannot allocate wiphy\n");
2086 ret = -ENOMEM;
2087 goto err_wiphy_new;
2088 }
2089
2090 lbs_deb_leave(LBS_DEB_CFG80211);
2091 return wdev;
2092
2093 err_wiphy_new:
2094 kfree(wdev);
2095 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2096 return ERR_PTR(ret);
2097}
2098
2099
2100static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2101{
2102 struct region_code_mapping {
2103 const char *cn;
2104 int code;
2105 };
2106
2107 /* Section 5.17.2 */
2108 static const struct region_code_mapping regmap[] = {
2109 {"US ", 0x10}, /* US FCC */
2110 {"CA ", 0x20}, /* Canada */
2111 {"EU ", 0x30}, /* ETSI */
2112 {"ES ", 0x31}, /* Spain */
2113 {"FR ", 0x32}, /* France */
2114 {"JP ", 0x40}, /* Japan */
2115 };
2116 size_t i;
2117
2118 lbs_deb_enter(LBS_DEB_CFG80211);
2119
2120 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2121 if (regmap[i].code == priv->regioncode) {
2122 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2123 break;
2124 }
2125
2126 lbs_deb_leave(LBS_DEB_CFG80211);
2127}
2128
2129static void lbs_reg_notifier(struct wiphy *wiphy,
2130 struct regulatory_request *request)
2131{
2132 struct lbs_private *priv = wiphy_priv(wiphy);
2133
2134 lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2135 "callback for domain %c%c\n", request->alpha2[0],
2136 request->alpha2[1]);
2137
2138 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2139 if (lbs_iface_active(priv))
2140 lbs_set_11d_domain_info(priv);
2141
2142 lbs_deb_leave(LBS_DEB_CFG80211);
2143}
2144
2145/*
2146 * This function get's called after lbs_setup_firmware() determined the
2147 * firmware capabities. So we can setup the wiphy according to our
2148 * hardware/firmware.
2149 */
2150int lbs_cfg_register(struct lbs_private *priv)
2151{
2152 struct wireless_dev *wdev = priv->wdev;
2153 int ret;
2154
2155 lbs_deb_enter(LBS_DEB_CFG80211);
2156
2157 wdev->wiphy->max_scan_ssids = 1;
2158 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2159
2160 wdev->wiphy->interface_modes =
2161 BIT(NL80211_IFTYPE_STATION) |
2162 BIT(NL80211_IFTYPE_ADHOC);
2163 if (lbs_rtap_supported(priv))
2164 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2165 if (lbs_mesh_activated(priv))
2166 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2167
2168 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2169
2170 /*
2171 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2172 * never seen a firmware without WPA
2173 */
2174 wdev->wiphy->cipher_suites = cipher_suites;
2175 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2176 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2177
2178 ret = wiphy_register(wdev->wiphy);
2179 if (ret < 0)
2180 pr_err("cannot register wiphy device\n");
2181
2182 priv->wiphy_registered = true;
2183
2184 ret = register_netdev(priv->dev);
2185 if (ret)
2186 pr_err("cannot register network device\n");
2187
2188 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2189
2190 lbs_cfg_set_regulatory_hint(priv);
2191
2192 lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2193 return ret;
2194}
2195
2196void lbs_scan_deinit(struct lbs_private *priv)
2197{
2198 lbs_deb_enter(LBS_DEB_CFG80211);
2199 cancel_delayed_work_sync(&priv->scan_work);
2200}
2201
2202
2203void lbs_cfg_free(struct lbs_private *priv)
2204{
2205 struct wireless_dev *wdev = priv->wdev;
2206
2207 lbs_deb_enter(LBS_DEB_CFG80211);
2208
2209 if (!wdev)
2210 return;
2211
2212 if (priv->wiphy_registered)
2213 wiphy_unregister(wdev->wiphy);
2214
2215 if (wdev->wiphy)
2216 wiphy_free(wdev->wiphy);
2217
2218 kfree(wdev);
2219}