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 if (ap_max > MAX_RATES) {
277 lbs_deb_assoc("invalid rates\n");
278 return tlv;
279 }
280 /* Advance past IE header */
281 ie += 2;
282
283 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
284
285 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
286 hw_rate = lbs_rates[hw].bitrate / 5;
287 for (ap = 0; ap < ap_max; ap++) {
288 if (hw_rate == (ie[ap] & 0x7f)) {
289 *tlv++ = ie[ap];
290 *nrates = *nrates + 1;
291 }
292 }
293 }
294 return tlv;
295 }
296
297 /*
298 * Adds a TLV with all rates the hardware *and* BSS supports.
299 */
lbs_add_common_rates_tlv(u8 * tlv,struct cfg80211_bss * bss)300 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
301 {
302 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
303 const u8 *rates_eid, *ext_rates_eid;
304 int n = 0;
305
306 rcu_read_lock();
307 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
308 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
309
310 /*
311 * 01 00 TLV_TYPE_RATES
312 * 04 00 len
313 * 82 84 8b 96 rates
314 */
315 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
316 tlv += sizeof(rate_tlv->header);
317
318 /* Add basic rates */
319 if (rates_eid) {
320 tlv = add_ie_rates(tlv, rates_eid, &n);
321
322 /* Add extended rates, if any */
323 if (ext_rates_eid)
324 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
325 } else {
326 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
327 /* Fallback: add basic 802.11b rates */
328 *tlv++ = 0x82;
329 *tlv++ = 0x84;
330 *tlv++ = 0x8b;
331 *tlv++ = 0x96;
332 n = 4;
333 }
334 rcu_read_unlock();
335
336 rate_tlv->header.len = cpu_to_le16(n);
337 return sizeof(rate_tlv->header) + n;
338 }
339
340
341 /*
342 * Add auth type TLV.
343 *
344 * This is only needed for newer firmware (V9 and up).
345 */
346 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
347 sizeof(struct mrvl_ie_auth_type)
348
lbs_add_auth_type_tlv(u8 * tlv,enum nl80211_auth_type auth_type)349 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
350 {
351 struct mrvl_ie_auth_type *auth = (void *) tlv;
352
353 /*
354 * 1f 01 TLV_TYPE_AUTH_TYPE
355 * 01 00 len
356 * 01 auth type
357 */
358 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
359 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
360 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
361 return sizeof(*auth);
362 }
363
364
365 /*
366 * Add channel (phy ds) TLV
367 */
368 #define LBS_MAX_CHANNEL_TLV_SIZE \
369 sizeof(struct mrvl_ie_header)
370
lbs_add_channel_tlv(u8 * tlv,u8 channel)371 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
372 {
373 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
374
375 /*
376 * 03 00 TLV_TYPE_PHY_DS
377 * 01 00 len
378 * 06 channel
379 */
380 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
381 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
382 ds->channel = channel;
383 return sizeof(*ds);
384 }
385
386
387 /*
388 * Add (empty) CF param TLV of the form:
389 */
390 #define LBS_MAX_CF_PARAM_TLV_SIZE \
391 sizeof(struct mrvl_ie_header)
392
lbs_add_cf_param_tlv(u8 * tlv)393 static int lbs_add_cf_param_tlv(u8 *tlv)
394 {
395 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
396
397 /*
398 * 04 00 TLV_TYPE_CF
399 * 06 00 len
400 * 00 cfpcnt
401 * 00 cfpperiod
402 * 00 00 cfpmaxduration
403 * 00 00 cfpdurationremaining
404 */
405 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
406 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
407 return sizeof(*cf);
408 }
409
410 /*
411 * Add WPA TLV
412 */
413 #define LBS_MAX_WPA_TLV_SIZE \
414 (sizeof(struct mrvl_ie_header) \
415 + 128 /* TODO: I guessed the size */)
416
lbs_add_wpa_tlv(u8 * tlv,const u8 * ie,u8 ie_len)417 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
418 {
419 struct mrvl_ie_data *wpatlv = (struct mrvl_ie_data *)tlv;
420 const struct element *wpaie;
421
422 /* Find the first RSN or WPA IE to use */
423 wpaie = cfg80211_find_elem(WLAN_EID_RSN, ie, ie_len);
424 if (!wpaie)
425 wpaie = cfg80211_find_vendor_elem(WLAN_OUI_MICROSOFT,
426 WLAN_OUI_TYPE_MICROSOFT_WPA,
427 ie, ie_len);
428 if (!wpaie || wpaie->datalen > 128)
429 return 0;
430
431 /*
432 * Convert the found IE to a TLV. IEs use u8 for the header,
433 * u8 type
434 * u8 len
435 * u8[] data
436 * but TLVs use __le16 instead:
437 * __le16 type
438 * __le16 len
439 * u8[] data
440 */
441 wpatlv->header.type = cpu_to_le16(wpaie->id);
442 wpatlv->header.len = cpu_to_le16(wpaie->datalen);
443 memcpy(wpatlv->data, wpaie->data, wpaie->datalen);
444
445 /* Return the total number of bytes added to the TLV buffer */
446 return sizeof(struct mrvl_ie_header) + wpaie->datalen;
447 }
448
449 /* Add WPS enrollee TLV
450 */
451 #define LBS_MAX_WPS_ENROLLEE_TLV_SIZE \
452 (sizeof(struct mrvl_ie_header) \
453 + 256)
454
lbs_add_wps_enrollee_tlv(u8 * tlv,const u8 * ie,size_t ie_len)455 static int lbs_add_wps_enrollee_tlv(u8 *tlv, const u8 *ie, size_t ie_len)
456 {
457 struct mrvl_ie_data *wpstlv = (struct mrvl_ie_data *)tlv;
458 const struct element *wpsie;
459
460 /* Look for a WPS IE and add it to the probe request */
461 wpsie = cfg80211_find_vendor_elem(WLAN_OUI_MICROSOFT,
462 WLAN_OUI_TYPE_MICROSOFT_WPS,
463 ie, ie_len);
464 if (!wpsie)
465 return 0;
466
467 /* Convert the WPS IE to a TLV. The IE looks like this:
468 * u8 type (WLAN_EID_VENDOR_SPECIFIC)
469 * u8 len
470 * u8[] data
471 * but the TLV will look like this instead:
472 * __le16 type (TLV_TYPE_WPS_ENROLLEE)
473 * __le16 len
474 * u8[] data
475 */
476 wpstlv->header.type = cpu_to_le16(TLV_TYPE_WPS_ENROLLEE);
477 wpstlv->header.len = cpu_to_le16(wpsie->datalen);
478 memcpy(wpstlv->data, wpsie->data, wpsie->datalen);
479
480 /* Return the total number of bytes added to the TLV buffer */
481 return sizeof(struct mrvl_ie_header) + wpsie->datalen;
482 }
483
484 /*
485 * Set Channel
486 */
487
lbs_cfg_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)488 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
489 struct cfg80211_chan_def *chandef)
490 {
491 struct lbs_private *priv = wiphy_priv(wiphy);
492 int ret = -ENOTSUPP;
493
494 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
495 goto out;
496
497 ret = lbs_set_channel(priv, chandef->chan->hw_value);
498
499 out:
500 return ret;
501 }
502
lbs_cfg_set_mesh_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * channel)503 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
504 struct net_device *netdev,
505 struct ieee80211_channel *channel)
506 {
507 struct lbs_private *priv = wiphy_priv(wiphy);
508 int ret = -ENOTSUPP;
509
510 if (netdev != priv->mesh_dev)
511 goto out;
512
513 ret = lbs_mesh_set_channel(priv, channel->hw_value);
514
515 out:
516 return ret;
517 }
518
519
520
521 /*
522 * Scanning
523 */
524
525 /*
526 * When scanning, the firmware doesn't send a nul packet with the power-safe
527 * bit to the AP. So we cannot stay away from our current channel too long,
528 * otherwise we loose data. So take a "nap" while scanning every other
529 * while.
530 */
531 #define LBS_SCAN_BEFORE_NAP 4
532
533
534 /*
535 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
536 * which isn't really an RSSI, as it becomes larger when moving away from
537 * the AP. Anyway, we need to convert that into mBm.
538 */
539 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
540 ((-(int)rssi + 3)*100)
541
lbs_ret_scan(struct lbs_private * priv,unsigned long dummy,struct cmd_header * resp)542 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
543 struct cmd_header *resp)
544 {
545 struct cfg80211_bss *bss;
546 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
547 int bsssize;
548 const u8 *pos;
549 const u8 *tsfdesc;
550 int tsfsize;
551 int i;
552 int ret = -EILSEQ;
553
554 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
555
556 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
557 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
558
559 if (scanresp->nr_sets == 0) {
560 ret = 0;
561 goto done;
562 }
563
564 /*
565 * The general layout of the scan response is described in chapter
566 * 5.7.1. Basically we have a common part, then any number of BSS
567 * descriptor sections. Finally we have section with the same number
568 * of TSFs.
569 *
570 * cmd_ds_802_11_scan_rsp
571 * cmd_header
572 * pos_size
573 * nr_sets
574 * bssdesc 1
575 * bssid
576 * rssi
577 * timestamp
578 * intvl
579 * capa
580 * IEs
581 * bssdesc 2
582 * bssdesc n
583 * MrvlIEtypes_TsfFimestamp_t
584 * TSF for BSS 1
585 * TSF for BSS 2
586 * TSF for BSS n
587 */
588
589 pos = scanresp->bssdesc_and_tlvbuffer;
590
591 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
592 bsssize);
593
594 tsfdesc = pos + bsssize;
595 tsfsize = 4 + 8 * scanresp->nr_sets;
596 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
597
598 /* Validity check: we expect a Marvell-Local TLV */
599 i = get_unaligned_le16(tsfdesc);
600 tsfdesc += 2;
601 if (i != TLV_TYPE_TSFTIMESTAMP) {
602 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
603 goto done;
604 }
605
606 /*
607 * Validity check: the TLV holds TSF values with 8 bytes each, so
608 * the size in the TLV must match the nr_sets value
609 */
610 i = get_unaligned_le16(tsfdesc);
611 tsfdesc += 2;
612 if (i / 8 != scanresp->nr_sets) {
613 lbs_deb_scan("scan response: invalid number of TSF timestamp "
614 "sets (expected %d got %d)\n", scanresp->nr_sets,
615 i / 8);
616 goto done;
617 }
618
619 for (i = 0; i < scanresp->nr_sets; i++) {
620 const u8 *bssid;
621 const u8 *ie;
622 int left;
623 int ielen;
624 int rssi;
625 u16 intvl;
626 u16 capa;
627 int chan_no = -1;
628 const u8 *ssid = NULL;
629 u8 ssid_len = 0;
630
631 int len = get_unaligned_le16(pos);
632 pos += 2;
633
634 /* BSSID */
635 bssid = pos;
636 pos += ETH_ALEN;
637 /* RSSI */
638 rssi = *pos++;
639 /* Packet time stamp */
640 pos += 8;
641 /* Beacon interval */
642 intvl = get_unaligned_le16(pos);
643 pos += 2;
644 /* Capabilities */
645 capa = get_unaligned_le16(pos);
646 pos += 2;
647
648 /* To find out the channel, we must parse the IEs */
649 ie = pos;
650 /*
651 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
652 * interval, capabilities
653 */
654 ielen = left = len - (6 + 1 + 8 + 2 + 2);
655 while (left >= 2) {
656 u8 id, elen;
657 id = *pos++;
658 elen = *pos++;
659 left -= 2;
660 if (elen > left) {
661 lbs_deb_scan("scan response: invalid IE fmt\n");
662 goto done;
663 }
664
665 if (id == WLAN_EID_DS_PARAMS)
666 chan_no = *pos;
667 if (id == WLAN_EID_SSID) {
668 ssid = pos;
669 ssid_len = elen;
670 }
671 left -= elen;
672 pos += elen;
673 }
674
675 /* No channel, no luck */
676 if (chan_no != -1) {
677 struct wiphy *wiphy = priv->wdev->wiphy;
678 int freq = ieee80211_channel_to_frequency(chan_no,
679 NL80211_BAND_2GHZ);
680 struct ieee80211_channel *channel =
681 ieee80211_get_channel(wiphy, freq);
682
683 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
684 bssid, capa, chan_no, ssid_len, ssid,
685 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
686
687 if (channel &&
688 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
689 bss = cfg80211_inform_bss(wiphy, channel,
690 CFG80211_BSS_FTYPE_UNKNOWN,
691 bssid, get_unaligned_le64(tsfdesc),
692 capa, intvl, ie, ielen,
693 LBS_SCAN_RSSI_TO_MBM(rssi),
694 GFP_KERNEL);
695 cfg80211_put_bss(wiphy, bss);
696 }
697 } else
698 lbs_deb_scan("scan response: missing BSS channel IE\n");
699
700 tsfdesc += 8;
701 }
702 ret = 0;
703
704 done:
705 return ret;
706 }
707
708
709 /*
710 * Our scan command contains a TLV, consisting of a SSID TLV, a channel list
711 * TLV, a rates TLV, and an optional WPS IE. Determine the maximum size of them:
712 */
713 #define LBS_SCAN_MAX_CMD_SIZE \
714 (sizeof(struct cmd_ds_802_11_scan) \
715 + LBS_MAX_SSID_TLV_SIZE \
716 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
717 + LBS_MAX_RATES_TLV_SIZE \
718 + LBS_MAX_WPS_ENROLLEE_TLV_SIZE)
719
720 /*
721 * Assumes priv->scan_req is initialized and valid
722 * Assumes priv->scan_channel is initialized
723 */
lbs_scan_worker(struct work_struct * work)724 static void lbs_scan_worker(struct work_struct *work)
725 {
726 struct lbs_private *priv =
727 container_of(work, struct lbs_private, scan_work.work);
728 struct cmd_ds_802_11_scan *scan_cmd;
729 u8 *tlv; /* pointer into our current, growing TLV storage area */
730 int last_channel;
731 int running, carrier;
732
733 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
734 if (scan_cmd == NULL)
735 return;
736
737 /* prepare fixed part of scan command */
738 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
739
740 /* stop network while we're away from our main channel */
741 running = !netif_queue_stopped(priv->dev);
742 carrier = netif_carrier_ok(priv->dev);
743 if (running)
744 netif_stop_queue(priv->dev);
745 if (carrier)
746 netif_carrier_off(priv->dev);
747
748 /* prepare fixed part of scan command */
749 tlv = scan_cmd->tlvbuffer;
750
751 /* add SSID TLV */
752 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
753 tlv += lbs_add_ssid_tlv(tlv,
754 priv->scan_req->ssids[0].ssid,
755 priv->scan_req->ssids[0].ssid_len);
756
757 /* add channel TLVs */
758 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
759 if (last_channel > priv->scan_req->n_channels)
760 last_channel = priv->scan_req->n_channels;
761 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
762 priv->scan_req->n_ssids);
763
764 /* add rates TLV */
765 tlv += lbs_add_supported_rates_tlv(tlv);
766
767 /* add optional WPS enrollee TLV */
768 if (priv->scan_req->ie && priv->scan_req->ie_len)
769 tlv += lbs_add_wps_enrollee_tlv(tlv, priv->scan_req->ie,
770 priv->scan_req->ie_len);
771
772 if (priv->scan_channel < priv->scan_req->n_channels) {
773 cancel_delayed_work(&priv->scan_work);
774 if (netif_running(priv->dev))
775 queue_delayed_work(priv->work_thread, &priv->scan_work,
776 msecs_to_jiffies(300));
777 }
778
779 /* This is the final data we are about to send */
780 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
781 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
782 sizeof(*scan_cmd));
783 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
784 tlv - scan_cmd->tlvbuffer);
785
786 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
787 le16_to_cpu(scan_cmd->hdr.size),
788 lbs_ret_scan, 0);
789
790 if (priv->scan_channel >= priv->scan_req->n_channels) {
791 /* Mark scan done */
792 cancel_delayed_work(&priv->scan_work);
793 lbs_scan_done(priv);
794 }
795
796 /* Restart network */
797 if (carrier)
798 netif_carrier_on(priv->dev);
799 if (running && !priv->tx_pending_len)
800 netif_wake_queue(priv->dev);
801
802 kfree(scan_cmd);
803
804 /* Wake up anything waiting on scan completion */
805 if (priv->scan_req == NULL) {
806 lbs_deb_scan("scan: waking up waiters\n");
807 wake_up_all(&priv->scan_q);
808 }
809 }
810
_internal_start_scan(struct lbs_private * priv,bool internal,struct cfg80211_scan_request * request)811 static void _internal_start_scan(struct lbs_private *priv, bool internal,
812 struct cfg80211_scan_request *request)
813 {
814 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
815 request->n_ssids, request->n_channels, request->ie_len);
816
817 priv->scan_channel = 0;
818 priv->scan_req = request;
819 priv->internal_scan = internal;
820
821 queue_delayed_work(priv->work_thread, &priv->scan_work,
822 msecs_to_jiffies(50));
823 }
824
825 /*
826 * Clean up priv->scan_req. Should be used to handle the allocation details.
827 */
lbs_scan_done(struct lbs_private * priv)828 void lbs_scan_done(struct lbs_private *priv)
829 {
830 WARN_ON(!priv->scan_req);
831
832 if (priv->internal_scan) {
833 kfree(priv->scan_req);
834 } else {
835 struct cfg80211_scan_info info = {
836 .aborted = false,
837 };
838
839 cfg80211_scan_done(priv->scan_req, &info);
840 }
841
842 priv->scan_req = NULL;
843 }
844
lbs_cfg_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)845 static int lbs_cfg_scan(struct wiphy *wiphy,
846 struct cfg80211_scan_request *request)
847 {
848 struct lbs_private *priv = wiphy_priv(wiphy);
849 int ret = 0;
850
851 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
852 /* old scan request not yet processed */
853 ret = -EAGAIN;
854 goto out;
855 }
856
857 _internal_start_scan(priv, false, request);
858
859 if (priv->surpriseremoved)
860 ret = -EIO;
861
862 out:
863 return ret;
864 }
865
866
867
868
869 /*
870 * Events
871 */
872
lbs_send_disconnect_notification(struct lbs_private * priv,bool locally_generated)873 void lbs_send_disconnect_notification(struct lbs_private *priv,
874 bool locally_generated)
875 {
876 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
877 GFP_KERNEL);
878 }
879
lbs_send_mic_failureevent(struct lbs_private * priv,u32 event)880 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
881 {
882 cfg80211_michael_mic_failure(priv->dev,
883 priv->assoc_bss,
884 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
885 NL80211_KEYTYPE_GROUP :
886 NL80211_KEYTYPE_PAIRWISE,
887 -1,
888 NULL,
889 GFP_KERNEL);
890 }
891
892
893
894
895 /*
896 * Connect/disconnect
897 */
898
899
900 /*
901 * This removes all WEP keys
902 */
lbs_remove_wep_keys(struct lbs_private * priv)903 static int lbs_remove_wep_keys(struct lbs_private *priv)
904 {
905 struct cmd_ds_802_11_set_wep cmd;
906 int ret;
907
908 memset(&cmd, 0, sizeof(cmd));
909 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
910 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
911 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
912
913 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
914
915 return ret;
916 }
917
918 /*
919 * Set WEP keys
920 */
lbs_set_wep_keys(struct lbs_private * priv)921 static int lbs_set_wep_keys(struct lbs_private *priv)
922 {
923 struct cmd_ds_802_11_set_wep cmd;
924 int i;
925 int ret;
926
927 /*
928 * command 13 00
929 * size 50 00
930 * sequence xx xx
931 * result 00 00
932 * action 02 00 ACT_ADD
933 * transmit key 00 00
934 * type for key 1 01 WEP40
935 * type for key 2 00
936 * type for key 3 00
937 * type for key 4 00
938 * key 1 39 39 39 39 39 00 00 00
939 * 00 00 00 00 00 00 00 00
940 * key 2 00 00 00 00 00 00 00 00
941 * 00 00 00 00 00 00 00 00
942 * key 3 00 00 00 00 00 00 00 00
943 * 00 00 00 00 00 00 00 00
944 * key 4 00 00 00 00 00 00 00 00
945 */
946 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
947 priv->wep_key_len[2] || priv->wep_key_len[3]) {
948 /* Only set wep keys if we have at least one of them */
949 memset(&cmd, 0, sizeof(cmd));
950 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
951 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
952 cmd.action = cpu_to_le16(CMD_ACT_ADD);
953
954 for (i = 0; i < 4; i++) {
955 switch (priv->wep_key_len[i]) {
956 case WLAN_KEY_LEN_WEP40:
957 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
958 break;
959 case WLAN_KEY_LEN_WEP104:
960 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
961 break;
962 default:
963 cmd.keytype[i] = 0;
964 break;
965 }
966 memcpy(cmd.keymaterial[i], priv->wep_key[i],
967 priv->wep_key_len[i]);
968 }
969
970 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
971 } else {
972 /* Otherwise remove all wep keys */
973 ret = lbs_remove_wep_keys(priv);
974 }
975
976 return ret;
977 }
978
979
980 /*
981 * Enable/Disable RSN status
982 */
lbs_enable_rsn(struct lbs_private * priv,int enable)983 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
984 {
985 struct cmd_ds_802_11_enable_rsn cmd;
986 int ret;
987
988 /*
989 * cmd 2f 00
990 * size 0c 00
991 * sequence xx xx
992 * result 00 00
993 * action 01 00 ACT_SET
994 * enable 01 00
995 */
996 memset(&cmd, 0, sizeof(cmd));
997 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
998 cmd.action = cpu_to_le16(CMD_ACT_SET);
999 cmd.enable = cpu_to_le16(enable);
1000
1001 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
1002
1003 return ret;
1004 }
1005
1006
1007 /*
1008 * Set WPA/WPA key material
1009 */
1010
1011 /*
1012 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
1013 * get rid of WEXT, this should go into host.h
1014 */
1015
1016 struct cmd_key_material {
1017 struct cmd_header hdr;
1018
1019 __le16 action;
1020 struct MrvlIEtype_keyParamSet param;
1021 } __packed;
1022
lbs_set_key_material(struct lbs_private * priv,int key_type,int key_info,const u8 * key,u16 key_len)1023 static int lbs_set_key_material(struct lbs_private *priv,
1024 int key_type, int key_info,
1025 const u8 *key, u16 key_len)
1026 {
1027 struct cmd_key_material cmd;
1028 int ret;
1029
1030 /*
1031 * Example for WPA (TKIP):
1032 *
1033 * cmd 5e 00
1034 * size 34 00
1035 * sequence xx xx
1036 * result 00 00
1037 * action 01 00
1038 * TLV type 00 01 key param
1039 * length 00 26
1040 * key type 01 00 TKIP
1041 * key info 06 00 UNICAST | ENABLED
1042 * key len 20 00
1043 * key 32 bytes
1044 */
1045 memset(&cmd, 0, sizeof(cmd));
1046 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1047 cmd.action = cpu_to_le16(CMD_ACT_SET);
1048 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1049 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1050 cmd.param.keytypeid = cpu_to_le16(key_type);
1051 cmd.param.keyinfo = cpu_to_le16(key_info);
1052 cmd.param.keylen = cpu_to_le16(key_len);
1053 if (key && key_len)
1054 memcpy(cmd.param.key, key, key_len);
1055
1056 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1057
1058 return ret;
1059 }
1060
1061
1062 /*
1063 * Sets the auth type (open, shared, etc) in the firmware. That
1064 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1065 * command doesn't send an authentication frame at all, it just
1066 * stores the auth_type.
1067 */
lbs_set_authtype(struct lbs_private * priv,struct cfg80211_connect_params * sme)1068 static int lbs_set_authtype(struct lbs_private *priv,
1069 struct cfg80211_connect_params *sme)
1070 {
1071 struct cmd_ds_802_11_authenticate cmd;
1072 int ret;
1073
1074 /*
1075 * cmd 11 00
1076 * size 19 00
1077 * sequence xx xx
1078 * result 00 00
1079 * BSS id 00 13 19 80 da 30
1080 * auth type 00
1081 * reserved 00 00 00 00 00 00 00 00 00 00
1082 */
1083 memset(&cmd, 0, sizeof(cmd));
1084 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1085 if (sme->bssid)
1086 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1087 /* convert auth_type */
1088 ret = lbs_auth_to_authtype(sme->auth_type);
1089 if (ret < 0)
1090 goto done;
1091
1092 cmd.authtype = ret;
1093 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1094
1095 done:
1096 return ret;
1097 }
1098
1099
1100 /*
1101 * Create association request
1102 */
1103 #define LBS_ASSOC_MAX_CMD_SIZE \
1104 (sizeof(struct cmd_ds_802_11_associate) \
1105 + LBS_MAX_SSID_TLV_SIZE \
1106 + LBS_MAX_CHANNEL_TLV_SIZE \
1107 + LBS_MAX_CF_PARAM_TLV_SIZE \
1108 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1109 + LBS_MAX_WPA_TLV_SIZE)
1110
lbs_associate(struct lbs_private * priv,struct cfg80211_bss * bss,struct cfg80211_connect_params * sme)1111 static int lbs_associate(struct lbs_private *priv,
1112 struct cfg80211_bss *bss,
1113 struct cfg80211_connect_params *sme)
1114 {
1115 struct cmd_ds_802_11_associate_response *resp;
1116 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1117 GFP_KERNEL);
1118 const u8 *ssid_eid;
1119 size_t len, resp_ie_len;
1120 int status;
1121 int ret;
1122 u8 *pos;
1123 u8 *tmp;
1124
1125 if (!cmd) {
1126 ret = -ENOMEM;
1127 goto done;
1128 }
1129 pos = &cmd->iebuf[0];
1130
1131 /*
1132 * cmd 50 00
1133 * length 34 00
1134 * sequence xx xx
1135 * result 00 00
1136 * BSS id 00 13 19 80 da 30
1137 * capabilities 11 00
1138 * listen interval 0a 00
1139 * beacon interval 00 00
1140 * DTIM period 00
1141 * TLVs xx (up to 512 bytes)
1142 */
1143 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1144
1145 /* Fill in static fields */
1146 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1147 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1148 cmd->capability = cpu_to_le16(bss->capability);
1149
1150 /* add SSID TLV */
1151 rcu_read_lock();
1152 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1153 if (ssid_eid)
1154 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1155 else
1156 lbs_deb_assoc("no SSID\n");
1157 rcu_read_unlock();
1158
1159 /* add DS param TLV */
1160 if (bss->channel)
1161 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1162 else
1163 lbs_deb_assoc("no channel\n");
1164
1165 /* add (empty) CF param TLV */
1166 pos += lbs_add_cf_param_tlv(pos);
1167
1168 /* add rates TLV */
1169 tmp = pos + 4; /* skip Marvell IE header */
1170 pos += lbs_add_common_rates_tlv(pos, bss);
1171 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1172
1173 /* add auth type TLV */
1174 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1175 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1176
1177 /* add WPA/WPA2 TLV */
1178 if (sme->ie && sme->ie_len)
1179 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1180
1181 len = sizeof(*cmd) + (u16)(pos - (u8 *) &cmd->iebuf);
1182 cmd->hdr.size = cpu_to_le16(len);
1183
1184 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1185 le16_to_cpu(cmd->hdr.size));
1186
1187 /* store for later use */
1188 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1189
1190 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1191 if (ret)
1192 goto done;
1193
1194 /* generate connect message to cfg80211 */
1195
1196 resp = (void *) cmd; /* recast for easier field access */
1197 status = le16_to_cpu(resp->statuscode);
1198
1199 /* Older FW versions map the IEEE 802.11 Status Code in the association
1200 * response to the following values returned in resp->statuscode:
1201 *
1202 * IEEE Status Code Marvell Status Code
1203 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1204 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1205 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1206 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1207 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1208 * others -> 0x0003 ASSOC_RESULT_REFUSED
1209 *
1210 * Other response codes:
1211 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1212 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1213 * association response from the AP)
1214 */
1215 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1216 switch (status) {
1217 case 0:
1218 break;
1219 case 1:
1220 lbs_deb_assoc("invalid association parameters\n");
1221 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1222 break;
1223 case 2:
1224 lbs_deb_assoc("timer expired while waiting for AP\n");
1225 status = WLAN_STATUS_AUTH_TIMEOUT;
1226 break;
1227 case 3:
1228 lbs_deb_assoc("association refused by AP\n");
1229 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1230 break;
1231 case 4:
1232 lbs_deb_assoc("authentication refused by AP\n");
1233 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1234 break;
1235 default:
1236 lbs_deb_assoc("association failure %d\n", status);
1237 /* v5 OLPC firmware does return the AP status code if
1238 * it's not one of the values above. Let that through.
1239 */
1240 break;
1241 }
1242 }
1243
1244 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1245 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1246 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1247
1248 resp_ie_len = le16_to_cpu(resp->hdr.size)
1249 - sizeof(resp->hdr)
1250 - 6;
1251 cfg80211_connect_result(priv->dev,
1252 priv->assoc_bss,
1253 sme->ie, sme->ie_len,
1254 resp->iebuf, resp_ie_len,
1255 status,
1256 GFP_KERNEL);
1257
1258 if (status == 0) {
1259 /* TODO: get rid of priv->connect_status */
1260 priv->connect_status = LBS_CONNECTED;
1261 netif_carrier_on(priv->dev);
1262 if (!priv->tx_pending_len)
1263 netif_tx_wake_all_queues(priv->dev);
1264 }
1265
1266 kfree(cmd);
1267 done:
1268 return ret;
1269 }
1270
1271 static struct cfg80211_scan_request *
_new_connect_scan_req(struct wiphy * wiphy,struct cfg80211_connect_params * sme)1272 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1273 {
1274 struct cfg80211_scan_request *creq = NULL;
1275 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1276 enum nl80211_band band;
1277
1278 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1279 n_channels * sizeof(void *),
1280 GFP_ATOMIC);
1281 if (!creq)
1282 return NULL;
1283
1284 /* SSIDs come after channels */
1285 creq->ssids = (void *)&creq->channels[n_channels];
1286 creq->n_channels = n_channels;
1287 creq->n_ssids = 1;
1288
1289 /* Scan all available channels */
1290 i = 0;
1291 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1292 int j;
1293
1294 if (!wiphy->bands[band])
1295 continue;
1296
1297 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1298 /* ignore disabled channels */
1299 if (wiphy->bands[band]->channels[j].flags &
1300 IEEE80211_CHAN_DISABLED)
1301 continue;
1302
1303 creq->channels[i] = &wiphy->bands[band]->channels[j];
1304 i++;
1305 }
1306 }
1307 if (i) {
1308 /* Set real number of channels specified in creq->channels[] */
1309 creq->n_channels = i;
1310
1311 /* Scan for the SSID we're going to connect to */
1312 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1313 creq->ssids[0].ssid_len = sme->ssid_len;
1314 } else {
1315 /* No channels found... */
1316 kfree(creq);
1317 creq = NULL;
1318 }
1319
1320 return creq;
1321 }
1322
lbs_cfg_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)1323 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1324 struct cfg80211_connect_params *sme)
1325 {
1326 struct lbs_private *priv = wiphy_priv(wiphy);
1327 struct cfg80211_bss *bss = NULL;
1328 int ret = 0;
1329 u8 preamble = RADIO_PREAMBLE_SHORT;
1330
1331 if (dev == priv->mesh_dev)
1332 return -EOPNOTSUPP;
1333
1334 if (!sme->bssid) {
1335 struct cfg80211_scan_request *creq;
1336
1337 /*
1338 * Scan for the requested network after waiting for existing
1339 * scans to finish.
1340 */
1341 lbs_deb_assoc("assoc: waiting for existing scans\n");
1342 wait_event_interruptible_timeout(priv->scan_q,
1343 (priv->scan_req == NULL),
1344 (15 * HZ));
1345
1346 creq = _new_connect_scan_req(wiphy, sme);
1347 if (!creq) {
1348 ret = -EINVAL;
1349 goto done;
1350 }
1351
1352 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1353 _internal_start_scan(priv, true, creq);
1354
1355 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1356 wait_event_interruptible_timeout(priv->scan_q,
1357 (priv->scan_req == NULL),
1358 (15 * HZ));
1359 lbs_deb_assoc("assoc: scanning completed\n");
1360 }
1361
1362 /* Find the BSS we want using available scan results */
1363 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1364 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1365 IEEE80211_PRIVACY_ANY);
1366 if (!bss) {
1367 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1368 sme->bssid);
1369 ret = -ENOENT;
1370 goto done;
1371 }
1372 lbs_deb_assoc("trying %pM\n", bss->bssid);
1373 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1374 sme->crypto.cipher_group,
1375 sme->key_idx, sme->key_len);
1376
1377 /* As this is a new connection, clear locally stored WEP keys */
1378 priv->wep_tx_key = 0;
1379 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1380 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1381
1382 /* set/remove WEP keys */
1383 switch (sme->crypto.cipher_group) {
1384 case WLAN_CIPHER_SUITE_WEP40:
1385 case WLAN_CIPHER_SUITE_WEP104:
1386 /* Store provided WEP keys in priv-> */
1387 priv->wep_tx_key = sme->key_idx;
1388 priv->wep_key_len[sme->key_idx] = sme->key_len;
1389 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1390 /* Set WEP keys and WEP mode */
1391 lbs_set_wep_keys(priv);
1392 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1393 lbs_set_mac_control(priv);
1394 /* No RSN mode for WEP */
1395 lbs_enable_rsn(priv, 0);
1396 break;
1397 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1398 /*
1399 * If we don't have no WEP, no WPA and no WPA2,
1400 * we remove all keys like in the WPA/WPA2 setup,
1401 * we just don't set RSN.
1402 *
1403 * Therefore: fall-through
1404 */
1405 case WLAN_CIPHER_SUITE_TKIP:
1406 case WLAN_CIPHER_SUITE_CCMP:
1407 /* Remove WEP keys and WEP mode */
1408 lbs_remove_wep_keys(priv);
1409 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1410 lbs_set_mac_control(priv);
1411
1412 /* clear the WPA/WPA2 keys */
1413 lbs_set_key_material(priv,
1414 KEY_TYPE_ID_WEP, /* doesn't matter */
1415 KEY_INFO_WPA_UNICAST,
1416 NULL, 0);
1417 lbs_set_key_material(priv,
1418 KEY_TYPE_ID_WEP, /* doesn't matter */
1419 KEY_INFO_WPA_MCAST,
1420 NULL, 0);
1421 /* RSN mode for WPA/WPA2 */
1422 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1423 break;
1424 default:
1425 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1426 sme->crypto.cipher_group);
1427 ret = -ENOTSUPP;
1428 goto done;
1429 }
1430
1431 ret = lbs_set_authtype(priv, sme);
1432 if (ret == -ENOTSUPP) {
1433 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1434 goto done;
1435 }
1436
1437 lbs_set_radio(priv, preamble, 1);
1438
1439 /* Do the actual association */
1440 ret = lbs_associate(priv, bss, sme);
1441
1442 done:
1443 if (bss)
1444 cfg80211_put_bss(wiphy, bss);
1445 return ret;
1446 }
1447
lbs_disconnect(struct lbs_private * priv,u16 reason)1448 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1449 {
1450 struct cmd_ds_802_11_deauthenticate cmd;
1451 int ret;
1452
1453 memset(&cmd, 0, sizeof(cmd));
1454 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1455 /* Mildly ugly to use a locally store my own BSSID ... */
1456 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1457 cmd.reasoncode = cpu_to_le16(reason);
1458
1459 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1460 if (ret)
1461 return ret;
1462
1463 cfg80211_disconnected(priv->dev,
1464 reason,
1465 NULL, 0, true,
1466 GFP_KERNEL);
1467 priv->connect_status = LBS_DISCONNECTED;
1468
1469 return 0;
1470 }
1471
lbs_cfg_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)1472 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1473 u16 reason_code)
1474 {
1475 struct lbs_private *priv = wiphy_priv(wiphy);
1476
1477 if (dev == priv->mesh_dev)
1478 return -EOPNOTSUPP;
1479
1480 /* store for lbs_cfg_ret_disconnect() */
1481 priv->disassoc_reason = reason_code;
1482
1483 return lbs_disconnect(priv, reason_code);
1484 }
1485
lbs_cfg_set_default_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool unicast,bool multicast)1486 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1487 struct net_device *netdev, int link_id,
1488 u8 key_index, bool unicast,
1489 bool multicast)
1490 {
1491 struct lbs_private *priv = wiphy_priv(wiphy);
1492
1493 if (netdev == priv->mesh_dev)
1494 return -EOPNOTSUPP;
1495
1496 if (key_index != priv->wep_tx_key) {
1497 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1498 priv->wep_tx_key = key_index;
1499 lbs_set_wep_keys(priv);
1500 }
1501
1502 return 0;
1503 }
1504
1505
lbs_cfg_add_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 idx,bool pairwise,const u8 * mac_addr,struct key_params * params)1506 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1507 int link_id, u8 idx, bool pairwise,
1508 const u8 *mac_addr, struct key_params *params)
1509 {
1510 struct lbs_private *priv = wiphy_priv(wiphy);
1511 u16 key_info;
1512 u16 key_type;
1513 int ret = 0;
1514
1515 if (netdev == priv->mesh_dev)
1516 return -EOPNOTSUPP;
1517
1518 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1519 params->cipher, mac_addr);
1520 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1521 idx, params->key_len);
1522 if (params->key_len)
1523 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1524 params->key, params->key_len);
1525
1526 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1527 if (params->seq_len)
1528 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1529 params->seq, params->seq_len);
1530
1531 switch (params->cipher) {
1532 case WLAN_CIPHER_SUITE_WEP40:
1533 case WLAN_CIPHER_SUITE_WEP104:
1534 /* actually compare if something has changed ... */
1535 if ((priv->wep_key_len[idx] != params->key_len) ||
1536 memcmp(priv->wep_key[idx],
1537 params->key, params->key_len) != 0) {
1538 priv->wep_key_len[idx] = params->key_len;
1539 memcpy(priv->wep_key[idx],
1540 params->key, params->key_len);
1541 lbs_set_wep_keys(priv);
1542 }
1543 break;
1544 case WLAN_CIPHER_SUITE_TKIP:
1545 case WLAN_CIPHER_SUITE_CCMP:
1546 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1547 ? KEY_INFO_WPA_UNICAST
1548 : KEY_INFO_WPA_MCAST);
1549 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1550 ? KEY_TYPE_ID_TKIP
1551 : KEY_TYPE_ID_AES;
1552 lbs_set_key_material(priv,
1553 key_type,
1554 key_info,
1555 params->key, params->key_len);
1556 break;
1557 default:
1558 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1559 ret = -ENOTSUPP;
1560 break;
1561 }
1562
1563 return ret;
1564 }
1565
1566
lbs_cfg_del_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool pairwise,const u8 * mac_addr)1567 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1568 int link_id, u8 key_index, bool pairwise,
1569 const u8 *mac_addr)
1570 {
1571
1572 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1573 key_index, mac_addr);
1574
1575 #ifdef TODO
1576 struct lbs_private *priv = wiphy_priv(wiphy);
1577 /*
1578 * I think can keep this a NO-OP, because:
1579
1580 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1581 * - neither "iw" nor "wpa_supplicant" won't call this during
1582 * an ongoing connection
1583 * - TODO: but I have to check if this is still true when
1584 * I set the AP to periodic re-keying
1585 * - we've not kzallec() something when we've added a key at
1586 * lbs_cfg_connect() or lbs_cfg_add_key().
1587 *
1588 * This causes lbs_cfg_del_key() only called at disconnect time,
1589 * where we'd just waste time deleting a key that is not going
1590 * to be used anyway.
1591 */
1592 if (key_index < 3 && priv->wep_key_len[key_index]) {
1593 priv->wep_key_len[key_index] = 0;
1594 lbs_set_wep_keys(priv);
1595 }
1596 #endif
1597
1598 return 0;
1599 }
1600
1601
1602 /*
1603 * Get station
1604 */
1605
lbs_cfg_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)1606 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1607 const u8 *mac, struct station_info *sinfo)
1608 {
1609 struct lbs_private *priv = wiphy_priv(wiphy);
1610 s8 signal, noise;
1611 int ret;
1612 size_t i;
1613
1614 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1615 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1616 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1617 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1618 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1619 sinfo->tx_packets = priv->dev->stats.tx_packets;
1620 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1621 sinfo->rx_packets = priv->dev->stats.rx_packets;
1622
1623 /* Get current RSSI */
1624 ret = lbs_get_rssi(priv, &signal, &noise);
1625 if (ret == 0) {
1626 sinfo->signal = signal;
1627 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1628 }
1629
1630 /* Convert priv->cur_rate from hw_value to NL80211 value */
1631 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1632 if (priv->cur_rate == lbs_rates[i].hw_value) {
1633 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1634 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1635 break;
1636 }
1637 }
1638
1639 return 0;
1640 }
1641
1642
1643
1644
1645 /*
1646 * Change interface
1647 */
1648
lbs_change_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)1649 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1650 enum nl80211_iftype type,
1651 struct vif_params *params)
1652 {
1653 struct lbs_private *priv = wiphy_priv(wiphy);
1654 int ret = 0;
1655
1656 if (dev == priv->mesh_dev)
1657 return -EOPNOTSUPP;
1658
1659 switch (type) {
1660 case NL80211_IFTYPE_MONITOR:
1661 case NL80211_IFTYPE_STATION:
1662 case NL80211_IFTYPE_ADHOC:
1663 break;
1664 default:
1665 return -EOPNOTSUPP;
1666 }
1667
1668 if (priv->iface_running)
1669 ret = lbs_set_iface_type(priv, type);
1670
1671 if (!ret)
1672 priv->wdev->iftype = type;
1673
1674 return ret;
1675 }
1676
1677
1678
1679 /*
1680 * IBSS (Ad-Hoc)
1681 */
1682
1683 /*
1684 * The firmware needs the following bits masked out of the beacon-derived
1685 * capability field when associating/joining to a BSS:
1686 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1687 */
1688 #define CAPINFO_MASK (~(0xda00))
1689
1690
lbs_join_post(struct lbs_private * priv,struct cfg80211_ibss_params * params,u8 * bssid,u16 capability)1691 static void lbs_join_post(struct lbs_private *priv,
1692 struct cfg80211_ibss_params *params,
1693 u8 *bssid, u16 capability)
1694 {
1695 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1696 2 + 4 + /* basic rates */
1697 2 + 1 + /* DS parameter */
1698 2 + 2 + /* atim */
1699 2 + 8]; /* extended rates */
1700 u8 *fake = fake_ie;
1701 struct cfg80211_bss *bss;
1702
1703 /*
1704 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1705 * the real IE from the firmware. So we fabricate a fake IE based on
1706 * what the firmware actually sends (sniffed with wireshark).
1707 */
1708 /* Fake SSID IE */
1709 *fake++ = WLAN_EID_SSID;
1710 *fake++ = params->ssid_len;
1711 memcpy(fake, params->ssid, params->ssid_len);
1712 fake += params->ssid_len;
1713 /* Fake supported basic rates IE */
1714 *fake++ = WLAN_EID_SUPP_RATES;
1715 *fake++ = 4;
1716 *fake++ = 0x82;
1717 *fake++ = 0x84;
1718 *fake++ = 0x8b;
1719 *fake++ = 0x96;
1720 /* Fake DS channel IE */
1721 *fake++ = WLAN_EID_DS_PARAMS;
1722 *fake++ = 1;
1723 *fake++ = params->chandef.chan->hw_value;
1724 /* Fake IBSS params IE */
1725 *fake++ = WLAN_EID_IBSS_PARAMS;
1726 *fake++ = 2;
1727 *fake++ = 0; /* ATIM=0 */
1728 *fake++ = 0;
1729 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1730 * but I don't know how this could be checked */
1731 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1732 *fake++ = 8;
1733 *fake++ = 0x0c;
1734 *fake++ = 0x12;
1735 *fake++ = 0x18;
1736 *fake++ = 0x24;
1737 *fake++ = 0x30;
1738 *fake++ = 0x48;
1739 *fake++ = 0x60;
1740 *fake++ = 0x6c;
1741 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1742
1743 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1744 params->chandef.chan,
1745 CFG80211_BSS_FTYPE_UNKNOWN,
1746 bssid,
1747 0,
1748 capability,
1749 params->beacon_interval,
1750 fake_ie, fake - fake_ie,
1751 0, GFP_KERNEL);
1752 cfg80211_put_bss(priv->wdev->wiphy, bss);
1753
1754 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1755 GFP_KERNEL);
1756
1757 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1758 priv->connect_status = LBS_CONNECTED;
1759 netif_carrier_on(priv->dev);
1760 if (!priv->tx_pending_len)
1761 netif_wake_queue(priv->dev);
1762 }
1763
lbs_ibss_join_existing(struct lbs_private * priv,struct cfg80211_ibss_params * params,struct cfg80211_bss * bss)1764 static int lbs_ibss_join_existing(struct lbs_private *priv,
1765 struct cfg80211_ibss_params *params,
1766 struct cfg80211_bss *bss)
1767 {
1768 const u8 *rates_eid;
1769 struct cmd_ds_802_11_ad_hoc_join cmd;
1770 u8 preamble = RADIO_PREAMBLE_SHORT;
1771 int ret = 0;
1772 int hw, i;
1773 u8 rates_max;
1774 u8 *rates;
1775
1776 /* TODO: set preamble based on scan result */
1777 ret = lbs_set_radio(priv, preamble, 1);
1778 if (ret)
1779 goto out;
1780
1781 /*
1782 * Example CMD_802_11_AD_HOC_JOIN command:
1783 *
1784 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1785 * size 65 00
1786 * sequence xx xx
1787 * result 00 00
1788 * bssid 02 27 27 97 2f 96
1789 * ssid 49 42 53 53 00 00 00 00
1790 * 00 00 00 00 00 00 00 00
1791 * 00 00 00 00 00 00 00 00
1792 * 00 00 00 00 00 00 00 00
1793 * type 02 CMD_BSS_TYPE_IBSS
1794 * beacon period 64 00
1795 * dtim period 00
1796 * timestamp 00 00 00 00 00 00 00 00
1797 * localtime 00 00 00 00 00 00 00 00
1798 * IE DS 03
1799 * IE DS len 01
1800 * IE DS channel 01
1801 * reserveed 00 00 00 00
1802 * IE IBSS 06
1803 * IE IBSS len 02
1804 * IE IBSS atim 00 00
1805 * reserved 00 00 00 00
1806 * capability 02 00
1807 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1808 * fail timeout ff 00
1809 * probe delay 00 00
1810 */
1811 memset(&cmd, 0, sizeof(cmd));
1812 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1813
1814 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1815 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1816 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1817 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1818 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1819 cmd.bss.ds.header.len = 1;
1820 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1821 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1822 cmd.bss.ibss.header.len = 2;
1823 cmd.bss.ibss.atimwindow = 0;
1824 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1825
1826 /* set rates to the intersection of our rates and the rates in the
1827 bss */
1828 rcu_read_lock();
1829 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1830 if (!rates_eid) {
1831 lbs_add_rates(cmd.bss.rates);
1832 } else {
1833 rates_max = rates_eid[1];
1834 if (rates_max > MAX_RATES) {
1835 lbs_deb_join("invalid rates");
1836 rcu_read_unlock();
1837 ret = -EINVAL;
1838 goto out;
1839 }
1840 rates = cmd.bss.rates;
1841 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1842 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1843 for (i = 0; i < rates_max; i++) {
1844 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1845 u8 rate = rates_eid[i+2];
1846 if (rate == 0x02 || rate == 0x04 ||
1847 rate == 0x0b || rate == 0x16)
1848 rate |= 0x80;
1849 *rates++ = rate;
1850 }
1851 }
1852 }
1853 }
1854 rcu_read_unlock();
1855
1856 /* Only v8 and below support setting this */
1857 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1858 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1859 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1860 }
1861 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1862 if (ret)
1863 goto out;
1864
1865 /*
1866 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1867 *
1868 * response 2c 80
1869 * size 09 00
1870 * sequence xx xx
1871 * result 00 00
1872 * reserved 00
1873 */
1874 lbs_join_post(priv, params, bss->bssid, bss->capability);
1875
1876 out:
1877 return ret;
1878 }
1879
1880
1881
lbs_ibss_start_new(struct lbs_private * priv,struct cfg80211_ibss_params * params)1882 static int lbs_ibss_start_new(struct lbs_private *priv,
1883 struct cfg80211_ibss_params *params)
1884 {
1885 struct cmd_ds_802_11_ad_hoc_start cmd;
1886 struct cmd_ds_802_11_ad_hoc_result *resp =
1887 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1888 u8 preamble = RADIO_PREAMBLE_SHORT;
1889 int ret = 0;
1890 u16 capability;
1891
1892 ret = lbs_set_radio(priv, preamble, 1);
1893 if (ret)
1894 goto out;
1895
1896 /*
1897 * Example CMD_802_11_AD_HOC_START command:
1898 *
1899 * command 2b 00 CMD_802_11_AD_HOC_START
1900 * size b1 00
1901 * sequence xx xx
1902 * result 00 00
1903 * ssid 54 45 53 54 00 00 00 00
1904 * 00 00 00 00 00 00 00 00
1905 * 00 00 00 00 00 00 00 00
1906 * 00 00 00 00 00 00 00 00
1907 * bss type 02
1908 * beacon period 64 00
1909 * dtim period 00
1910 * IE IBSS 06
1911 * IE IBSS len 02
1912 * IE IBSS atim 00 00
1913 * reserved 00 00 00 00
1914 * IE DS 03
1915 * IE DS len 01
1916 * IE DS channel 01
1917 * reserved 00 00 00 00
1918 * probe delay 00 00
1919 * capability 02 00
1920 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1921 * 0c 12 18 24 30 48 60 6c
1922 * padding 100 bytes
1923 */
1924 memset(&cmd, 0, sizeof(cmd));
1925 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1926 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1927 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1928 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1929 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1930 cmd.ibss.header.len = 2;
1931 cmd.ibss.atimwindow = 0;
1932 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1933 cmd.ds.header.len = 1;
1934 cmd.ds.channel = params->chandef.chan->hw_value;
1935 /* Only v8 and below support setting probe delay */
1936 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1937 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1938 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1939 capability = WLAN_CAPABILITY_IBSS;
1940 cmd.capability = cpu_to_le16(capability);
1941 lbs_add_rates(cmd.rates);
1942
1943
1944 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1945 if (ret)
1946 goto out;
1947
1948 /*
1949 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1950 *
1951 * response 2b 80
1952 * size 14 00
1953 * sequence xx xx
1954 * result 00 00
1955 * reserved 00
1956 * bssid 02 2b 7b 0f 86 0e
1957 */
1958 lbs_join_post(priv, params, resp->bssid, capability);
1959
1960 out:
1961 return ret;
1962 }
1963
1964
lbs_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1965 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1966 struct cfg80211_ibss_params *params)
1967 {
1968 struct lbs_private *priv = wiphy_priv(wiphy);
1969 int ret = 0;
1970 struct cfg80211_bss *bss;
1971
1972 if (dev == priv->mesh_dev)
1973 return -EOPNOTSUPP;
1974
1975 if (!params->chandef.chan) {
1976 ret = -ENOTSUPP;
1977 goto out;
1978 }
1979
1980 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1981 if (ret)
1982 goto out;
1983
1984 /* Search if someone is beaconing. This assumes that the
1985 * bss list is populated already */
1986 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1987 params->ssid, params->ssid_len,
1988 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1989
1990 if (bss) {
1991 ret = lbs_ibss_join_existing(priv, params, bss);
1992 cfg80211_put_bss(wiphy, bss);
1993 } else
1994 ret = lbs_ibss_start_new(priv, params);
1995
1996
1997 out:
1998 return ret;
1999 }
2000
2001
lbs_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2002 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2003 {
2004 struct lbs_private *priv = wiphy_priv(wiphy);
2005 struct cmd_ds_802_11_ad_hoc_stop cmd;
2006 int ret = 0;
2007
2008 if (dev == priv->mesh_dev)
2009 return -EOPNOTSUPP;
2010
2011 memset(&cmd, 0, sizeof(cmd));
2012 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2013 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2014
2015 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2016 lbs_mac_event_disconnected(priv, true);
2017
2018 return ret;
2019 }
2020
2021
2022
lbs_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2023 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2024 bool enabled, int timeout)
2025 {
2026 struct lbs_private *priv = wiphy_priv(wiphy);
2027
2028 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
2029 if (!enabled)
2030 return 0;
2031 else
2032 return -EINVAL;
2033 }
2034 /* firmware does not work well with too long latency with power saving
2035 * enabled, so do not enable it if there is only polling, no
2036 * interrupts (like in some sdio hosts which can only
2037 * poll for sdio irqs)
2038 */
2039 if (priv->is_polling) {
2040 if (!enabled)
2041 return 0;
2042 else
2043 return -EINVAL;
2044 }
2045 if (!enabled) {
2046 priv->psmode = LBS802_11POWERMODECAM;
2047 if (priv->psstate != PS_STATE_FULL_POWER)
2048 lbs_set_ps_mode(priv,
2049 PS_MODE_ACTION_EXIT_PS,
2050 true);
2051 return 0;
2052 }
2053 if (priv->psmode != LBS802_11POWERMODECAM)
2054 return 0;
2055 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2056 if (priv->connect_status == LBS_CONNECTED)
2057 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2058 return 0;
2059 }
2060
2061 /*
2062 * Initialization
2063 */
2064
2065 static const struct cfg80211_ops lbs_cfg80211_ops = {
2066 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2067 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2068 .scan = lbs_cfg_scan,
2069 .connect = lbs_cfg_connect,
2070 .disconnect = lbs_cfg_disconnect,
2071 .add_key = lbs_cfg_add_key,
2072 .del_key = lbs_cfg_del_key,
2073 .set_default_key = lbs_cfg_set_default_key,
2074 .get_station = lbs_cfg_get_station,
2075 .change_virtual_intf = lbs_change_intf,
2076 .join_ibss = lbs_join_ibss,
2077 .leave_ibss = lbs_leave_ibss,
2078 .set_power_mgmt = lbs_set_power_mgmt,
2079 };
2080
2081
2082 /*
2083 * At this time lbs_private *priv doesn't even exist, so we just allocate
2084 * memory and don't initialize the wiphy further. This is postponed until we
2085 * can talk to the firmware and happens at registration time in
2086 * lbs_cfg_wiphy_register().
2087 */
lbs_cfg_alloc(struct device * dev)2088 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2089 {
2090 int ret = 0;
2091 struct wireless_dev *wdev;
2092
2093 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2094 if (!wdev)
2095 return ERR_PTR(-ENOMEM);
2096
2097 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2098 if (!wdev->wiphy) {
2099 dev_err(dev, "cannot allocate wiphy\n");
2100 ret = -ENOMEM;
2101 goto err_wiphy_new;
2102 }
2103
2104 return wdev;
2105
2106 err_wiphy_new:
2107 kfree(wdev);
2108 return ERR_PTR(ret);
2109 }
2110
2111
lbs_cfg_set_regulatory_hint(struct lbs_private * priv)2112 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2113 {
2114 struct region_code_mapping {
2115 const char *cn;
2116 int code;
2117 };
2118
2119 /* Section 5.17.2 */
2120 static const struct region_code_mapping regmap[] = {
2121 {"US ", 0x10}, /* US FCC */
2122 {"CA ", 0x20}, /* Canada */
2123 {"EU ", 0x30}, /* ETSI */
2124 {"ES ", 0x31}, /* Spain */
2125 {"FR ", 0x32}, /* France */
2126 {"JP ", 0x40}, /* Japan */
2127 };
2128 size_t i;
2129
2130 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2131 if (regmap[i].code == priv->regioncode) {
2132 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2133 break;
2134 }
2135 }
2136
lbs_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)2137 static void lbs_reg_notifier(struct wiphy *wiphy,
2138 struct regulatory_request *request)
2139 {
2140 struct lbs_private *priv = wiphy_priv(wiphy);
2141
2142 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2143 if (lbs_iface_active(priv))
2144 lbs_set_11d_domain_info(priv);
2145 }
2146
2147 /*
2148 * This function get's called after lbs_setup_firmware() determined the
2149 * firmware capabities. So we can setup the wiphy according to our
2150 * hardware/firmware.
2151 */
lbs_cfg_register(struct lbs_private * priv)2152 int lbs_cfg_register(struct lbs_private *priv)
2153 {
2154 struct wireless_dev *wdev = priv->wdev;
2155 int ret;
2156
2157 wdev->wiphy->max_scan_ssids = 1;
2158 wdev->wiphy->max_scan_ie_len = 256;
2159 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2160
2161 wdev->wiphy->interface_modes =
2162 BIT(NL80211_IFTYPE_STATION) |
2163 BIT(NL80211_IFTYPE_ADHOC);
2164 if (lbs_rtap_supported(priv))
2165 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2166 if (lbs_mesh_activated(priv))
2167 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2168
2169 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2170
2171 /*
2172 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2173 * never seen a firmware without WPA
2174 */
2175 wdev->wiphy->cipher_suites = cipher_suites;
2176 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2177 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2178
2179 ret = wiphy_register(wdev->wiphy);
2180 if (ret < 0)
2181 pr_err("cannot register wiphy device\n");
2182
2183 priv->wiphy_registered = true;
2184
2185 ret = register_netdev(priv->dev);
2186 if (ret)
2187 pr_err("cannot register network device\n");
2188
2189 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2190
2191 lbs_cfg_set_regulatory_hint(priv);
2192
2193 return ret;
2194 }
2195
lbs_scan_deinit(struct lbs_private * priv)2196 void lbs_scan_deinit(struct lbs_private *priv)
2197 {
2198 cancel_delayed_work_sync(&priv->scan_work);
2199 }
2200
2201
lbs_cfg_free(struct lbs_private * priv)2202 void lbs_cfg_free(struct lbs_private *priv)
2203 {
2204 struct wireless_dev *wdev = priv->wdev;
2205
2206 if (!wdev)
2207 return;
2208
2209 if (priv->wiphy_registered)
2210 wiphy_unregister(wdev->wiphy);
2211
2212 if (wdev->wiphy)
2213 wiphy_free(wdev->wiphy);
2214
2215 kfree(wdev);
2216 }
2217