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 <linux/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 u32 ssid_len = min(ssid_eid[1], IEEE80211_MAX_SSID_LEN);
1155
1156 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_len);
1157 } else {
1158 lbs_deb_assoc("no SSID\n");
1159 }
1160 rcu_read_unlock();
1161
1162 /* add DS param TLV */
1163 if (bss->channel)
1164 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1165 else
1166 lbs_deb_assoc("no channel\n");
1167
1168 /* add (empty) CF param TLV */
1169 pos += lbs_add_cf_param_tlv(pos);
1170
1171 /* add rates TLV */
1172 tmp = pos + 4; /* skip Marvell IE header */
1173 pos += lbs_add_common_rates_tlv(pos, bss);
1174 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1175
1176 /* add auth type TLV */
1177 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1178 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1179
1180 /* add WPA/WPA2 TLV */
1181 if (sme->ie && sme->ie_len)
1182 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1183
1184 len = sizeof(*cmd) + (u16)(pos - (u8 *) &cmd->iebuf);
1185 cmd->hdr.size = cpu_to_le16(len);
1186
1187 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1188 le16_to_cpu(cmd->hdr.size));
1189
1190 /* store for later use */
1191 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1192
1193 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1194 if (ret)
1195 goto done;
1196
1197 /* generate connect message to cfg80211 */
1198
1199 resp = (void *) cmd; /* recast for easier field access */
1200 status = le16_to_cpu(resp->statuscode);
1201
1202 /* Older FW versions map the IEEE 802.11 Status Code in the association
1203 * response to the following values returned in resp->statuscode:
1204 *
1205 * IEEE Status Code Marvell Status Code
1206 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1207 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1208 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1209 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1210 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1211 * others -> 0x0003 ASSOC_RESULT_REFUSED
1212 *
1213 * Other response codes:
1214 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1215 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1216 * association response from the AP)
1217 */
1218 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1219 switch (status) {
1220 case 0:
1221 break;
1222 case 1:
1223 lbs_deb_assoc("invalid association parameters\n");
1224 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1225 break;
1226 case 2:
1227 lbs_deb_assoc("timer expired while waiting for AP\n");
1228 status = WLAN_STATUS_AUTH_TIMEOUT;
1229 break;
1230 case 3:
1231 lbs_deb_assoc("association refused by AP\n");
1232 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1233 break;
1234 case 4:
1235 lbs_deb_assoc("authentication refused by AP\n");
1236 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1237 break;
1238 default:
1239 lbs_deb_assoc("association failure %d\n", status);
1240 /* v5 OLPC firmware does return the AP status code if
1241 * it's not one of the values above. Let that through.
1242 */
1243 break;
1244 }
1245 }
1246
1247 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1248 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1249 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1250
1251 resp_ie_len = le16_to_cpu(resp->hdr.size)
1252 - sizeof(resp->hdr)
1253 - 6;
1254 cfg80211_connect_result(priv->dev,
1255 priv->assoc_bss,
1256 sme->ie, sme->ie_len,
1257 resp->iebuf, resp_ie_len,
1258 status,
1259 GFP_KERNEL);
1260
1261 if (status == 0) {
1262 /* TODO: get rid of priv->connect_status */
1263 priv->connect_status = LBS_CONNECTED;
1264 netif_carrier_on(priv->dev);
1265 if (!priv->tx_pending_len)
1266 netif_tx_wake_all_queues(priv->dev);
1267 }
1268
1269 kfree(cmd);
1270 done:
1271 return ret;
1272 }
1273
1274 static struct cfg80211_scan_request *
_new_connect_scan_req(struct wiphy * wiphy,struct cfg80211_connect_params * sme)1275 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1276 {
1277 struct cfg80211_scan_request *creq = NULL;
1278 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1279 enum nl80211_band band;
1280
1281 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1282 n_channels * sizeof(void *),
1283 GFP_ATOMIC);
1284 if (!creq)
1285 return NULL;
1286
1287 /* SSIDs come after channels */
1288 creq->ssids = (void *)&creq->channels[n_channels];
1289 creq->n_channels = n_channels;
1290 creq->n_ssids = 1;
1291
1292 /* Scan all available channels */
1293 i = 0;
1294 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1295 int j;
1296
1297 if (!wiphy->bands[band])
1298 continue;
1299
1300 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1301 /* ignore disabled channels */
1302 if (wiphy->bands[band]->channels[j].flags &
1303 IEEE80211_CHAN_DISABLED)
1304 continue;
1305
1306 creq->channels[i] = &wiphy->bands[band]->channels[j];
1307 i++;
1308 }
1309 }
1310 if (i) {
1311 /* Set real number of channels specified in creq->channels[] */
1312 creq->n_channels = i;
1313
1314 /* Scan for the SSID we're going to connect to */
1315 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1316 creq->ssids[0].ssid_len = sme->ssid_len;
1317 } else {
1318 /* No channels found... */
1319 kfree(creq);
1320 creq = NULL;
1321 }
1322
1323 return creq;
1324 }
1325
lbs_cfg_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)1326 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1327 struct cfg80211_connect_params *sme)
1328 {
1329 struct lbs_private *priv = wiphy_priv(wiphy);
1330 struct cfg80211_bss *bss = NULL;
1331 int ret = 0;
1332 u8 preamble = RADIO_PREAMBLE_SHORT;
1333
1334 if (dev == priv->mesh_dev)
1335 return -EOPNOTSUPP;
1336
1337 if (!sme->bssid) {
1338 struct cfg80211_scan_request *creq;
1339
1340 /*
1341 * Scan for the requested network after waiting for existing
1342 * scans to finish.
1343 */
1344 lbs_deb_assoc("assoc: waiting for existing scans\n");
1345 wait_event_interruptible_timeout(priv->scan_q,
1346 (priv->scan_req == NULL),
1347 (15 * HZ));
1348
1349 creq = _new_connect_scan_req(wiphy, sme);
1350 if (!creq) {
1351 ret = -EINVAL;
1352 goto done;
1353 }
1354
1355 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1356 _internal_start_scan(priv, true, creq);
1357
1358 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1359 wait_event_interruptible_timeout(priv->scan_q,
1360 (priv->scan_req == NULL),
1361 (15 * HZ));
1362 lbs_deb_assoc("assoc: scanning completed\n");
1363 }
1364
1365 /* Find the BSS we want using available scan results */
1366 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1367 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1368 IEEE80211_PRIVACY_ANY);
1369 if (!bss) {
1370 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1371 sme->bssid);
1372 ret = -ENOENT;
1373 goto done;
1374 }
1375 lbs_deb_assoc("trying %pM\n", bss->bssid);
1376 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1377 sme->crypto.cipher_group,
1378 sme->key_idx, sme->key_len);
1379
1380 /* As this is a new connection, clear locally stored WEP keys */
1381 priv->wep_tx_key = 0;
1382 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1383 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1384
1385 /* set/remove WEP keys */
1386 switch (sme->crypto.cipher_group) {
1387 case WLAN_CIPHER_SUITE_WEP40:
1388 case WLAN_CIPHER_SUITE_WEP104:
1389 /* Store provided WEP keys in priv-> */
1390 priv->wep_tx_key = sme->key_idx;
1391 priv->wep_key_len[sme->key_idx] = sme->key_len;
1392 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1393 /* Set WEP keys and WEP mode */
1394 lbs_set_wep_keys(priv);
1395 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1396 lbs_set_mac_control(priv);
1397 /* No RSN mode for WEP */
1398 lbs_enable_rsn(priv, 0);
1399 break;
1400 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1401 /*
1402 * If we don't have no WEP, no WPA and no WPA2,
1403 * we remove all keys like in the WPA/WPA2 setup,
1404 * we just don't set RSN.
1405 *
1406 * Therefore: fall-through
1407 */
1408 case WLAN_CIPHER_SUITE_TKIP:
1409 case WLAN_CIPHER_SUITE_CCMP:
1410 /* Remove WEP keys and WEP mode */
1411 lbs_remove_wep_keys(priv);
1412 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1413 lbs_set_mac_control(priv);
1414
1415 /* clear the WPA/WPA2 keys */
1416 lbs_set_key_material(priv,
1417 KEY_TYPE_ID_WEP, /* doesn't matter */
1418 KEY_INFO_WPA_UNICAST,
1419 NULL, 0);
1420 lbs_set_key_material(priv,
1421 KEY_TYPE_ID_WEP, /* doesn't matter */
1422 KEY_INFO_WPA_MCAST,
1423 NULL, 0);
1424 /* RSN mode for WPA/WPA2 */
1425 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1426 break;
1427 default:
1428 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1429 sme->crypto.cipher_group);
1430 ret = -ENOTSUPP;
1431 goto done;
1432 }
1433
1434 ret = lbs_set_authtype(priv, sme);
1435 if (ret == -ENOTSUPP) {
1436 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1437 goto done;
1438 }
1439
1440 lbs_set_radio(priv, preamble, 1);
1441
1442 /* Do the actual association */
1443 ret = lbs_associate(priv, bss, sme);
1444
1445 done:
1446 if (bss)
1447 cfg80211_put_bss(wiphy, bss);
1448 return ret;
1449 }
1450
lbs_disconnect(struct lbs_private * priv,u16 reason)1451 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1452 {
1453 struct cmd_ds_802_11_deauthenticate cmd;
1454 int ret;
1455
1456 memset(&cmd, 0, sizeof(cmd));
1457 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1458 /* Mildly ugly to use a locally store my own BSSID ... */
1459 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1460 cmd.reasoncode = cpu_to_le16(reason);
1461
1462 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1463 if (ret)
1464 return ret;
1465
1466 cfg80211_disconnected(priv->dev,
1467 reason,
1468 NULL, 0, true,
1469 GFP_KERNEL);
1470 priv->connect_status = LBS_DISCONNECTED;
1471
1472 return 0;
1473 }
1474
lbs_cfg_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)1475 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1476 u16 reason_code)
1477 {
1478 struct lbs_private *priv = wiphy_priv(wiphy);
1479
1480 if (dev == priv->mesh_dev)
1481 return -EOPNOTSUPP;
1482
1483 /* store for lbs_cfg_ret_disconnect() */
1484 priv->disassoc_reason = reason_code;
1485
1486 return lbs_disconnect(priv, reason_code);
1487 }
1488
lbs_cfg_set_default_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool unicast,bool multicast)1489 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1490 struct net_device *netdev, int link_id,
1491 u8 key_index, bool unicast,
1492 bool multicast)
1493 {
1494 struct lbs_private *priv = wiphy_priv(wiphy);
1495
1496 if (netdev == priv->mesh_dev)
1497 return -EOPNOTSUPP;
1498
1499 if (key_index != priv->wep_tx_key) {
1500 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1501 priv->wep_tx_key = key_index;
1502 lbs_set_wep_keys(priv);
1503 }
1504
1505 return 0;
1506 }
1507
1508
lbs_cfg_add_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 idx,bool pairwise,const u8 * mac_addr,struct key_params * params)1509 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1510 int link_id, u8 idx, bool pairwise,
1511 const u8 *mac_addr, 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_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1522 params->cipher, mac_addr);
1523 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1524 idx, params->key_len);
1525 if (params->key_len)
1526 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1527 params->key, params->key_len);
1528
1529 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1530 if (params->seq_len)
1531 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1532 params->seq, params->seq_len);
1533
1534 switch (params->cipher) {
1535 case WLAN_CIPHER_SUITE_WEP40:
1536 case WLAN_CIPHER_SUITE_WEP104:
1537 /* actually compare if something has changed ... */
1538 if ((priv->wep_key_len[idx] != params->key_len) ||
1539 memcmp(priv->wep_key[idx],
1540 params->key, params->key_len) != 0) {
1541 priv->wep_key_len[idx] = params->key_len;
1542 memcpy(priv->wep_key[idx],
1543 params->key, params->key_len);
1544 lbs_set_wep_keys(priv);
1545 }
1546 break;
1547 case WLAN_CIPHER_SUITE_TKIP:
1548 case WLAN_CIPHER_SUITE_CCMP:
1549 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1550 ? KEY_INFO_WPA_UNICAST
1551 : KEY_INFO_WPA_MCAST);
1552 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1553 ? KEY_TYPE_ID_TKIP
1554 : KEY_TYPE_ID_AES;
1555 lbs_set_key_material(priv,
1556 key_type,
1557 key_info,
1558 params->key, params->key_len);
1559 break;
1560 default:
1561 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1562 ret = -ENOTSUPP;
1563 break;
1564 }
1565
1566 return ret;
1567 }
1568
1569
lbs_cfg_del_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool pairwise,const u8 * mac_addr)1570 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1571 int link_id, u8 key_index, bool pairwise,
1572 const u8 *mac_addr)
1573 {
1574
1575 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1576 key_index, mac_addr);
1577
1578 #ifdef TODO
1579 struct lbs_private *priv = wiphy_priv(wiphy);
1580 /*
1581 * I think can keep this a NO-OP, because:
1582
1583 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1584 * - neither "iw" nor "wpa_supplicant" won't call this during
1585 * an ongoing connection
1586 * - TODO: but I have to check if this is still true when
1587 * I set the AP to periodic re-keying
1588 * - we've not kzallec() something when we've added a key at
1589 * lbs_cfg_connect() or lbs_cfg_add_key().
1590 *
1591 * This causes lbs_cfg_del_key() only called at disconnect time,
1592 * where we'd just waste time deleting a key that is not going
1593 * to be used anyway.
1594 */
1595 if (key_index < 3 && priv->wep_key_len[key_index]) {
1596 priv->wep_key_len[key_index] = 0;
1597 lbs_set_wep_keys(priv);
1598 }
1599 #endif
1600
1601 return 0;
1602 }
1603
1604
1605 /*
1606 * Get station
1607 */
1608
lbs_cfg_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)1609 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1610 const u8 *mac, struct station_info *sinfo)
1611 {
1612 struct lbs_private *priv = wiphy_priv(wiphy);
1613 s8 signal, noise;
1614 int ret;
1615 size_t i;
1616
1617 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1618 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1619 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1620 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1621 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1622 sinfo->tx_packets = priv->dev->stats.tx_packets;
1623 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1624 sinfo->rx_packets = priv->dev->stats.rx_packets;
1625
1626 /* Get current RSSI */
1627 ret = lbs_get_rssi(priv, &signal, &noise);
1628 if (ret == 0) {
1629 sinfo->signal = signal;
1630 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1631 }
1632
1633 /* Convert priv->cur_rate from hw_value to NL80211 value */
1634 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1635 if (priv->cur_rate == lbs_rates[i].hw_value) {
1636 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1637 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1638 break;
1639 }
1640 }
1641
1642 return 0;
1643 }
1644
1645
1646
1647
1648 /*
1649 * Change interface
1650 */
1651
lbs_change_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)1652 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1653 enum nl80211_iftype type,
1654 struct vif_params *params)
1655 {
1656 struct lbs_private *priv = wiphy_priv(wiphy);
1657 int ret = 0;
1658
1659 if (dev == priv->mesh_dev)
1660 return -EOPNOTSUPP;
1661
1662 switch (type) {
1663 case NL80211_IFTYPE_MONITOR:
1664 case NL80211_IFTYPE_STATION:
1665 case NL80211_IFTYPE_ADHOC:
1666 break;
1667 default:
1668 return -EOPNOTSUPP;
1669 }
1670
1671 if (priv->iface_running)
1672 ret = lbs_set_iface_type(priv, type);
1673
1674 if (!ret)
1675 priv->wdev->iftype = type;
1676
1677 return ret;
1678 }
1679
1680
1681
1682 /*
1683 * IBSS (Ad-Hoc)
1684 */
1685
1686 /*
1687 * The firmware needs the following bits masked out of the beacon-derived
1688 * capability field when associating/joining to a BSS:
1689 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1690 */
1691 #define CAPINFO_MASK (~(0xda00))
1692
1693
lbs_join_post(struct lbs_private * priv,struct cfg80211_ibss_params * params,u8 * bssid,u16 capability)1694 static void lbs_join_post(struct lbs_private *priv,
1695 struct cfg80211_ibss_params *params,
1696 u8 *bssid, u16 capability)
1697 {
1698 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1699 2 + 4 + /* basic rates */
1700 2 + 1 + /* DS parameter */
1701 2 + 2 + /* atim */
1702 2 + 8]; /* extended rates */
1703 u8 *fake = fake_ie;
1704 struct cfg80211_bss *bss;
1705
1706 /*
1707 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1708 * the real IE from the firmware. So we fabricate a fake IE based on
1709 * what the firmware actually sends (sniffed with wireshark).
1710 */
1711 /* Fake SSID IE */
1712 *fake++ = WLAN_EID_SSID;
1713 *fake++ = params->ssid_len;
1714 memcpy(fake, params->ssid, params->ssid_len);
1715 fake += params->ssid_len;
1716 /* Fake supported basic rates IE */
1717 *fake++ = WLAN_EID_SUPP_RATES;
1718 *fake++ = 4;
1719 *fake++ = 0x82;
1720 *fake++ = 0x84;
1721 *fake++ = 0x8b;
1722 *fake++ = 0x96;
1723 /* Fake DS channel IE */
1724 *fake++ = WLAN_EID_DS_PARAMS;
1725 *fake++ = 1;
1726 *fake++ = params->chandef.chan->hw_value;
1727 /* Fake IBSS params IE */
1728 *fake++ = WLAN_EID_IBSS_PARAMS;
1729 *fake++ = 2;
1730 *fake++ = 0; /* ATIM=0 */
1731 *fake++ = 0;
1732 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1733 * but I don't know how this could be checked */
1734 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1735 *fake++ = 8;
1736 *fake++ = 0x0c;
1737 *fake++ = 0x12;
1738 *fake++ = 0x18;
1739 *fake++ = 0x24;
1740 *fake++ = 0x30;
1741 *fake++ = 0x48;
1742 *fake++ = 0x60;
1743 *fake++ = 0x6c;
1744 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1745
1746 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1747 params->chandef.chan,
1748 CFG80211_BSS_FTYPE_UNKNOWN,
1749 bssid,
1750 0,
1751 capability,
1752 params->beacon_interval,
1753 fake_ie, fake - fake_ie,
1754 0, GFP_KERNEL);
1755 cfg80211_put_bss(priv->wdev->wiphy, bss);
1756
1757 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1758 GFP_KERNEL);
1759
1760 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1761 priv->connect_status = LBS_CONNECTED;
1762 netif_carrier_on(priv->dev);
1763 if (!priv->tx_pending_len)
1764 netif_wake_queue(priv->dev);
1765 }
1766
lbs_ibss_join_existing(struct lbs_private * priv,struct cfg80211_ibss_params * params,struct cfg80211_bss * bss)1767 static int lbs_ibss_join_existing(struct lbs_private *priv,
1768 struct cfg80211_ibss_params *params,
1769 struct cfg80211_bss *bss)
1770 {
1771 const u8 *rates_eid;
1772 struct cmd_ds_802_11_ad_hoc_join cmd;
1773 u8 preamble = RADIO_PREAMBLE_SHORT;
1774 int ret = 0;
1775 int hw, i;
1776 u8 rates_max;
1777 u8 *rates;
1778
1779 /* TODO: set preamble based on scan result */
1780 ret = lbs_set_radio(priv, preamble, 1);
1781 if (ret)
1782 goto out;
1783
1784 /*
1785 * Example CMD_802_11_AD_HOC_JOIN command:
1786 *
1787 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1788 * size 65 00
1789 * sequence xx xx
1790 * result 00 00
1791 * bssid 02 27 27 97 2f 96
1792 * ssid 49 42 53 53 00 00 00 00
1793 * 00 00 00 00 00 00 00 00
1794 * 00 00 00 00 00 00 00 00
1795 * 00 00 00 00 00 00 00 00
1796 * type 02 CMD_BSS_TYPE_IBSS
1797 * beacon period 64 00
1798 * dtim period 00
1799 * timestamp 00 00 00 00 00 00 00 00
1800 * localtime 00 00 00 00 00 00 00 00
1801 * IE DS 03
1802 * IE DS len 01
1803 * IE DS channel 01
1804 * reserveed 00 00 00 00
1805 * IE IBSS 06
1806 * IE IBSS len 02
1807 * IE IBSS atim 00 00
1808 * reserved 00 00 00 00
1809 * capability 02 00
1810 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1811 * fail timeout ff 00
1812 * probe delay 00 00
1813 */
1814 memset(&cmd, 0, sizeof(cmd));
1815 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1816
1817 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1818 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1819 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1820 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1821 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1822 cmd.bss.ds.header.len = 1;
1823 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1824 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1825 cmd.bss.ibss.header.len = 2;
1826 cmd.bss.ibss.atimwindow = 0;
1827 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1828
1829 /* set rates to the intersection of our rates and the rates in the
1830 bss */
1831 rcu_read_lock();
1832 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1833 if (!rates_eid) {
1834 lbs_add_rates(cmd.bss.rates);
1835 } else {
1836 rates_max = rates_eid[1];
1837 if (rates_max > MAX_RATES) {
1838 lbs_deb_join("invalid rates");
1839 rcu_read_unlock();
1840 ret = -EINVAL;
1841 goto out;
1842 }
1843 rates = cmd.bss.rates;
1844 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1845 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1846 for (i = 0; i < rates_max; i++) {
1847 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1848 u8 rate = rates_eid[i+2];
1849 if (rate == 0x02 || rate == 0x04 ||
1850 rate == 0x0b || rate == 0x16)
1851 rate |= 0x80;
1852 *rates++ = rate;
1853 }
1854 }
1855 }
1856 }
1857 rcu_read_unlock();
1858
1859 /* Only v8 and below support setting this */
1860 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1861 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1862 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1863 }
1864 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1865 if (ret)
1866 goto out;
1867
1868 /*
1869 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1870 *
1871 * response 2c 80
1872 * size 09 00
1873 * sequence xx xx
1874 * result 00 00
1875 * reserved 00
1876 */
1877 lbs_join_post(priv, params, bss->bssid, bss->capability);
1878
1879 out:
1880 return ret;
1881 }
1882
1883
1884
lbs_ibss_start_new(struct lbs_private * priv,struct cfg80211_ibss_params * params)1885 static int lbs_ibss_start_new(struct lbs_private *priv,
1886 struct cfg80211_ibss_params *params)
1887 {
1888 struct cmd_ds_802_11_ad_hoc_start cmd;
1889 struct cmd_ds_802_11_ad_hoc_result *resp =
1890 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1891 u8 preamble = RADIO_PREAMBLE_SHORT;
1892 int ret = 0;
1893 u16 capability;
1894
1895 ret = lbs_set_radio(priv, preamble, 1);
1896 if (ret)
1897 goto out;
1898
1899 /*
1900 * Example CMD_802_11_AD_HOC_START command:
1901 *
1902 * command 2b 00 CMD_802_11_AD_HOC_START
1903 * size b1 00
1904 * sequence xx xx
1905 * result 00 00
1906 * ssid 54 45 53 54 00 00 00 00
1907 * 00 00 00 00 00 00 00 00
1908 * 00 00 00 00 00 00 00 00
1909 * 00 00 00 00 00 00 00 00
1910 * bss type 02
1911 * beacon period 64 00
1912 * dtim period 00
1913 * IE IBSS 06
1914 * IE IBSS len 02
1915 * IE IBSS atim 00 00
1916 * reserved 00 00 00 00
1917 * IE DS 03
1918 * IE DS len 01
1919 * IE DS channel 01
1920 * reserved 00 00 00 00
1921 * probe delay 00 00
1922 * capability 02 00
1923 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1924 * 0c 12 18 24 30 48 60 6c
1925 * padding 100 bytes
1926 */
1927 memset(&cmd, 0, sizeof(cmd));
1928 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1929 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1930 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1931 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1932 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1933 cmd.ibss.header.len = 2;
1934 cmd.ibss.atimwindow = 0;
1935 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1936 cmd.ds.header.len = 1;
1937 cmd.ds.channel = params->chandef.chan->hw_value;
1938 /* Only v8 and below support setting probe delay */
1939 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1940 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1941 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1942 capability = WLAN_CAPABILITY_IBSS;
1943 cmd.capability = cpu_to_le16(capability);
1944 lbs_add_rates(cmd.rates);
1945
1946
1947 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1948 if (ret)
1949 goto out;
1950
1951 /*
1952 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1953 *
1954 * response 2b 80
1955 * size 14 00
1956 * sequence xx xx
1957 * result 00 00
1958 * reserved 00
1959 * bssid 02 2b 7b 0f 86 0e
1960 */
1961 lbs_join_post(priv, params, resp->bssid, capability);
1962
1963 out:
1964 return ret;
1965 }
1966
1967
lbs_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1968 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1969 struct cfg80211_ibss_params *params)
1970 {
1971 struct lbs_private *priv = wiphy_priv(wiphy);
1972 int ret = 0;
1973 struct cfg80211_bss *bss;
1974
1975 if (dev == priv->mesh_dev)
1976 return -EOPNOTSUPP;
1977
1978 if (!params->chandef.chan) {
1979 ret = -ENOTSUPP;
1980 goto out;
1981 }
1982
1983 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1984 if (ret)
1985 goto out;
1986
1987 /* Search if someone is beaconing. This assumes that the
1988 * bss list is populated already */
1989 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1990 params->ssid, params->ssid_len,
1991 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1992
1993 if (bss) {
1994 ret = lbs_ibss_join_existing(priv, params, bss);
1995 cfg80211_put_bss(wiphy, bss);
1996 } else
1997 ret = lbs_ibss_start_new(priv, params);
1998
1999
2000 out:
2001 return ret;
2002 }
2003
2004
lbs_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2005 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2006 {
2007 struct lbs_private *priv = wiphy_priv(wiphy);
2008 struct cmd_ds_802_11_ad_hoc_stop cmd;
2009 int ret = 0;
2010
2011 if (dev == priv->mesh_dev)
2012 return -EOPNOTSUPP;
2013
2014 memset(&cmd, 0, sizeof(cmd));
2015 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2016 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2017
2018 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2019 lbs_mac_event_disconnected(priv, true);
2020
2021 return ret;
2022 }
2023
2024
2025
lbs_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2026 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2027 bool enabled, int timeout)
2028 {
2029 struct lbs_private *priv = wiphy_priv(wiphy);
2030
2031 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
2032 if (!enabled)
2033 return 0;
2034 else
2035 return -EINVAL;
2036 }
2037 /* firmware does not work well with too long latency with power saving
2038 * enabled, so do not enable it if there is only polling, no
2039 * interrupts (like in some sdio hosts which can only
2040 * poll for sdio irqs)
2041 */
2042 if (priv->is_polling) {
2043 if (!enabled)
2044 return 0;
2045 else
2046 return -EINVAL;
2047 }
2048 if (!enabled) {
2049 priv->psmode = LBS802_11POWERMODECAM;
2050 if (priv->psstate != PS_STATE_FULL_POWER)
2051 lbs_set_ps_mode(priv,
2052 PS_MODE_ACTION_EXIT_PS,
2053 true);
2054 return 0;
2055 }
2056 if (priv->psmode != LBS802_11POWERMODECAM)
2057 return 0;
2058 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2059 if (priv->connect_status == LBS_CONNECTED)
2060 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2061 return 0;
2062 }
2063
2064 /*
2065 * Initialization
2066 */
2067
2068 static const struct cfg80211_ops lbs_cfg80211_ops = {
2069 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2070 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2071 .scan = lbs_cfg_scan,
2072 .connect = lbs_cfg_connect,
2073 .disconnect = lbs_cfg_disconnect,
2074 .add_key = lbs_cfg_add_key,
2075 .del_key = lbs_cfg_del_key,
2076 .set_default_key = lbs_cfg_set_default_key,
2077 .get_station = lbs_cfg_get_station,
2078 .change_virtual_intf = lbs_change_intf,
2079 .join_ibss = lbs_join_ibss,
2080 .leave_ibss = lbs_leave_ibss,
2081 .set_power_mgmt = lbs_set_power_mgmt,
2082 };
2083
2084
2085 /*
2086 * At this time lbs_private *priv doesn't even exist, so we just allocate
2087 * memory and don't initialize the wiphy further. This is postponed until we
2088 * can talk to the firmware and happens at registration time in
2089 * lbs_cfg_wiphy_register().
2090 */
lbs_cfg_alloc(struct device * dev)2091 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2092 {
2093 int ret = 0;
2094 struct wireless_dev *wdev;
2095
2096 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2097 if (!wdev)
2098 return ERR_PTR(-ENOMEM);
2099
2100 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2101 if (!wdev->wiphy) {
2102 dev_err(dev, "cannot allocate wiphy\n");
2103 ret = -ENOMEM;
2104 goto err_wiphy_new;
2105 }
2106
2107 return wdev;
2108
2109 err_wiphy_new:
2110 kfree(wdev);
2111 return ERR_PTR(ret);
2112 }
2113
2114
lbs_cfg_set_regulatory_hint(struct lbs_private * priv)2115 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2116 {
2117 struct region_code_mapping {
2118 const char *cn;
2119 int code;
2120 };
2121
2122 /* Section 5.17.2 */
2123 static const struct region_code_mapping regmap[] = {
2124 {"US ", 0x10}, /* US FCC */
2125 {"CA ", 0x20}, /* Canada */
2126 {"EU ", 0x30}, /* ETSI */
2127 {"ES ", 0x31}, /* Spain */
2128 {"FR ", 0x32}, /* France */
2129 {"JP ", 0x40}, /* Japan */
2130 };
2131 size_t i;
2132
2133 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2134 if (regmap[i].code == priv->regioncode) {
2135 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2136 break;
2137 }
2138 }
2139
lbs_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)2140 static void lbs_reg_notifier(struct wiphy *wiphy,
2141 struct regulatory_request *request)
2142 {
2143 struct lbs_private *priv = wiphy_priv(wiphy);
2144
2145 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2146 if (lbs_iface_active(priv))
2147 lbs_set_11d_domain_info(priv);
2148 }
2149
2150 /*
2151 * This function get's called after lbs_setup_firmware() determined the
2152 * firmware capabities. So we can setup the wiphy according to our
2153 * hardware/firmware.
2154 */
lbs_cfg_register(struct lbs_private * priv)2155 int lbs_cfg_register(struct lbs_private *priv)
2156 {
2157 struct wireless_dev *wdev = priv->wdev;
2158 int ret;
2159
2160 wdev->wiphy->max_scan_ssids = 1;
2161 wdev->wiphy->max_scan_ie_len = 256;
2162 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2163
2164 wdev->wiphy->interface_modes =
2165 BIT(NL80211_IFTYPE_STATION) |
2166 BIT(NL80211_IFTYPE_ADHOC);
2167 if (lbs_rtap_supported(priv))
2168 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2169 if (lbs_mesh_activated(priv))
2170 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2171
2172 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2173
2174 /*
2175 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2176 * never seen a firmware without WPA
2177 */
2178 wdev->wiphy->cipher_suites = cipher_suites;
2179 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2180 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2181
2182 ret = wiphy_register(wdev->wiphy);
2183 if (ret < 0)
2184 pr_err("cannot register wiphy device\n");
2185
2186 priv->wiphy_registered = true;
2187
2188 ret = register_netdev(priv->dev);
2189 if (ret)
2190 pr_err("cannot register network device\n");
2191
2192 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2193
2194 lbs_cfg_set_regulatory_hint(priv);
2195
2196 return ret;
2197 }
2198
lbs_scan_deinit(struct lbs_private * priv)2199 void lbs_scan_deinit(struct lbs_private *priv)
2200 {
2201 cancel_delayed_work_sync(&priv->scan_work);
2202 }
2203
2204
lbs_cfg_free(struct lbs_private * priv)2205 void lbs_cfg_free(struct lbs_private *priv)
2206 {
2207 struct wireless_dev *wdev = priv->wdev;
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 }
2220