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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / marvell / libertas / cfg.c
blob4e3de684928bf90aaab8eefedd028bf9b209d32c
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 */
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 */
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
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
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 */
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 *
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 */
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
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
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
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
417 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
418 {
419 size_t tlv_len;
420
421 /*
422 * We need just convert an IE to an TLV. IEs use u8 for the header,
423 * u8 type
424 * u8 len
425 * u8[] data
426 * but TLVs use __le16 instead:
427 * __le16 type
428 * __le16 len
429 * u8[] data
430 */
431 *tlv++ = *ie++;
432 *tlv++ = 0;
433 tlv_len = *tlv++ = *ie++;
434 *tlv++ = 0;
435 while (tlv_len--)
436 *tlv++ = *ie++;
437 /* the TLV is two bytes larger than the IE */
438 return ie_len + 2;
439 }
440
441 /*
442 * Set Channel
443 */
444
445 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
446 struct cfg80211_chan_def *chandef)
447 {
448 struct lbs_private *priv = wiphy_priv(wiphy);
449 int ret = -ENOTSUPP;
450
451 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
452 goto out;
453
454 ret = lbs_set_channel(priv, chandef->chan->hw_value);
455
456 out:
457 return ret;
458 }
459
460 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
461 struct net_device *netdev,
462 struct ieee80211_channel *channel)
463 {
464 struct lbs_private *priv = wiphy_priv(wiphy);
465 int ret = -ENOTSUPP;
466
467 if (netdev != priv->mesh_dev)
468 goto out;
469
470 ret = lbs_mesh_set_channel(priv, channel->hw_value);
471
472 out:
473 return ret;
474 }
475
476
477
478 /*
479 * Scanning
480 */
481
482 /*
483 * When scanning, the firmware doesn't send a nul packet with the power-safe
484 * bit to the AP. So we cannot stay away from our current channel too long,
485 * otherwise we loose data. So take a "nap" while scanning every other
486 * while.
487 */
488 #define LBS_SCAN_BEFORE_NAP 4
489
490
491 /*
492 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
493 * which isn't really an RSSI, as it becomes larger when moving away from
494 * the AP. Anyway, we need to convert that into mBm.
495 */
496 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
497 ((-(int)rssi + 3)*100)
498
499 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
500 struct cmd_header *resp)
501 {
502 struct cfg80211_bss *bss;
503 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
504 int bsssize;
505 const u8 *pos;
506 const u8 *tsfdesc;
507 int tsfsize;
508 int i;
509 int ret = -EILSEQ;
510
511 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
512
513 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
514 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
515
516 if (scanresp->nr_sets == 0) {
517 ret = 0;
518 goto done;
519 }
520
521 /*
522 * The general layout of the scan response is described in chapter
523 * 5.7.1. Basically we have a common part, then any number of BSS
524 * descriptor sections. Finally we have section with the same number
525 * of TSFs.
526 *
527 * cmd_ds_802_11_scan_rsp
528 * cmd_header
529 * pos_size
530 * nr_sets
531 * bssdesc 1
532 * bssid
533 * rssi
534 * timestamp
535 * intvl
536 * capa
537 * IEs
538 * bssdesc 2
539 * bssdesc n
540 * MrvlIEtypes_TsfFimestamp_t
541 * TSF for BSS 1
542 * TSF for BSS 2
543 * TSF for BSS n
544 */
545
546 pos = scanresp->bssdesc_and_tlvbuffer;
547
548 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
549 scanresp->bssdescriptsize);
550
551 tsfdesc = pos + bsssize;
552 tsfsize = 4 + 8 * scanresp->nr_sets;
553 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
554
555 /* Validity check: we expect a Marvell-Local TLV */
556 i = get_unaligned_le16(tsfdesc);
557 tsfdesc += 2;
558 if (i != TLV_TYPE_TSFTIMESTAMP) {
559 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
560 goto done;
561 }
562
563 /*
564 * Validity check: the TLV holds TSF values with 8 bytes each, so
565 * the size in the TLV must match the nr_sets value
566 */
567 i = get_unaligned_le16(tsfdesc);
568 tsfdesc += 2;
569 if (i / 8 != scanresp->nr_sets) {
570 lbs_deb_scan("scan response: invalid number of TSF timestamp "
571 "sets (expected %d got %d)\n", scanresp->nr_sets,
572 i / 8);
573 goto done;
574 }
575
576 for (i = 0; i < scanresp->nr_sets; i++) {
577 const u8 *bssid;
578 const u8 *ie;
579 int left;
580 int ielen;
581 int rssi;
582 u16 intvl;
583 u16 capa;
584 int chan_no = -1;
585 const u8 *ssid = NULL;
586 u8 ssid_len = 0;
587
588 int len = get_unaligned_le16(pos);
589 pos += 2;
590
591 /* BSSID */
592 bssid = pos;
593 pos += ETH_ALEN;
594 /* RSSI */
595 rssi = *pos++;
596 /* Packet time stamp */
597 pos += 8;
598 /* Beacon interval */
599 intvl = get_unaligned_le16(pos);
600 pos += 2;
601 /* Capabilities */
602 capa = get_unaligned_le16(pos);
603 pos += 2;
604
605 /* To find out the channel, we must parse the IEs */
606 ie = pos;
607 /*
608 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
609 * interval, capabilities
610 */
611 ielen = left = len - (6 + 1 + 8 + 2 + 2);
612 while (left >= 2) {
613 u8 id, elen;
614 id = *pos++;
615 elen = *pos++;
616 left -= 2;
617 if (elen > left) {
618 lbs_deb_scan("scan response: invalid IE fmt\n");
619 goto done;
620 }
621
622 if (id == WLAN_EID_DS_PARAMS)
623 chan_no = *pos;
624 if (id == WLAN_EID_SSID) {
625 ssid = pos;
626 ssid_len = elen;
627 }
628 left -= elen;
629 pos += elen;
630 }
631
632 /* No channel, no luck */
633 if (chan_no != -1) {
634 struct wiphy *wiphy = priv->wdev->wiphy;
635 int freq = ieee80211_channel_to_frequency(chan_no,
636 NL80211_BAND_2GHZ);
637 struct ieee80211_channel *channel =
638 ieee80211_get_channel(wiphy, freq);
639
640 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
641 bssid, capa, chan_no, ssid_len, ssid,
642 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
643
644 if (channel &&
645 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
646 bss = cfg80211_inform_bss(wiphy, channel,
647 CFG80211_BSS_FTYPE_UNKNOWN,
648 bssid, get_unaligned_le64(tsfdesc),
649 capa, intvl, ie, ielen,
650 LBS_SCAN_RSSI_TO_MBM(rssi),
651 GFP_KERNEL);
652 cfg80211_put_bss(wiphy, bss);
653 }
654 } else
655 lbs_deb_scan("scan response: missing BSS channel IE\n");
656
657 tsfdesc += 8;
658 }
659 ret = 0;
660
661 done:
662 return ret;
663 }
664
665
666 /*
667 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
668 * TLV and a rates TLV. Determine the maximum size of them:
669 */
670 #define LBS_SCAN_MAX_CMD_SIZE \
671 (sizeof(struct cmd_ds_802_11_scan) \
672 + LBS_MAX_SSID_TLV_SIZE \
673 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
674 + LBS_MAX_RATES_TLV_SIZE)
675
676 /*
677 * Assumes priv->scan_req is initialized and valid
678 * Assumes priv->scan_channel is initialized
679 */
680 static void lbs_scan_worker(struct work_struct *work)
681 {
682 struct lbs_private *priv =
683 container_of(work, struct lbs_private, scan_work.work);
684 struct cmd_ds_802_11_scan *scan_cmd;
685 u8 *tlv; /* pointer into our current, growing TLV storage area */
686 int last_channel;
687 int running, carrier;
688
689 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
690 if (scan_cmd == NULL)
691 return;
692
693 /* prepare fixed part of scan command */
694 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
695
696 /* stop network while we're away from our main channel */
697 running = !netif_queue_stopped(priv->dev);
698 carrier = netif_carrier_ok(priv->dev);
699 if (running)
700 netif_stop_queue(priv->dev);
701 if (carrier)
702 netif_carrier_off(priv->dev);
703
704 /* prepare fixed part of scan command */
705 tlv = scan_cmd->tlvbuffer;
706
707 /* add SSID TLV */
708 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
709 tlv += lbs_add_ssid_tlv(tlv,
710 priv->scan_req->ssids[0].ssid,
711 priv->scan_req->ssids[0].ssid_len);
712
713 /* add channel TLVs */
714 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
715 if (last_channel > priv->scan_req->n_channels)
716 last_channel = priv->scan_req->n_channels;
717 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
718 priv->scan_req->n_ssids);
719
720 /* add rates TLV */
721 tlv += lbs_add_supported_rates_tlv(tlv);
722
723 if (priv->scan_channel < priv->scan_req->n_channels) {
724 cancel_delayed_work(&priv->scan_work);
725 if (netif_running(priv->dev))
726 queue_delayed_work(priv->work_thread, &priv->scan_work,
727 msecs_to_jiffies(300));
728 }
729
730 /* This is the final data we are about to send */
731 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
732 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
733 sizeof(*scan_cmd));
734 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
735 tlv - scan_cmd->tlvbuffer);
736
737 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
738 le16_to_cpu(scan_cmd->hdr.size),
739 lbs_ret_scan, 0);
740
741 if (priv->scan_channel >= priv->scan_req->n_channels) {
742 /* Mark scan done */
743 cancel_delayed_work(&priv->scan_work);
744 lbs_scan_done(priv);
745 }
746
747 /* Restart network */
748 if (carrier)
749 netif_carrier_on(priv->dev);
750 if (running && !priv->tx_pending_len)
751 netif_wake_queue(priv->dev);
752
753 kfree(scan_cmd);
754
755 /* Wake up anything waiting on scan completion */
756 if (priv->scan_req == NULL) {
757 lbs_deb_scan("scan: waking up waiters\n");
758 wake_up_all(&priv->scan_q);
759 }
760 }
761
762 static void _internal_start_scan(struct lbs_private *priv, bool internal,
763 struct cfg80211_scan_request *request)
764 {
765 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
766 request->n_ssids, request->n_channels, request->ie_len);
767
768 priv->scan_channel = 0;
769 priv->scan_req = request;
770 priv->internal_scan = internal;
771
772 queue_delayed_work(priv->work_thread, &priv->scan_work,
773 msecs_to_jiffies(50));
774 }
775
776 /*
777 * Clean up priv->scan_req. Should be used to handle the allocation details.
778 */
779 void lbs_scan_done(struct lbs_private *priv)
780 {
781 WARN_ON(!priv->scan_req);
782
783 if (priv->internal_scan) {
784 kfree(priv->scan_req);
785 } else {
786 struct cfg80211_scan_info info = {
787 .aborted = false,
788 };
789
790 cfg80211_scan_done(priv->scan_req, &info);
791 }
792
793 priv->scan_req = NULL;
794 }
795
796 static int lbs_cfg_scan(struct wiphy *wiphy,
797 struct cfg80211_scan_request *request)
798 {
799 struct lbs_private *priv = wiphy_priv(wiphy);
800 int ret = 0;
801
802 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
803 /* old scan request not yet processed */
804 ret = -EAGAIN;
805 goto out;
806 }
807
808 _internal_start_scan(priv, false, request);
809
810 if (priv->surpriseremoved)
811 ret = -EIO;
812
813 out:
814 return ret;
815 }
816
817
818
819
820 /*
821 * Events
822 */
823
824 void lbs_send_disconnect_notification(struct lbs_private *priv,
825 bool locally_generated)
826 {
827 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
828 GFP_KERNEL);
829 }
830
831 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
832 {
833 cfg80211_michael_mic_failure(priv->dev,
834 priv->assoc_bss,
835 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
836 NL80211_KEYTYPE_GROUP :
837 NL80211_KEYTYPE_PAIRWISE,
838 -1,
839 NULL,
840 GFP_KERNEL);
841 }
842
843
844
845
846 /*
847 * Connect/disconnect
848 */
849
850
851 /*
852 * This removes all WEP keys
853 */
854 static int lbs_remove_wep_keys(struct lbs_private *priv)
855 {
856 struct cmd_ds_802_11_set_wep cmd;
857 int ret;
858
859 memset(&cmd, 0, sizeof(cmd));
860 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
861 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
862 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
863
864 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
865
866 return ret;
867 }
868
869 /*
870 * Set WEP keys
871 */
872 static int lbs_set_wep_keys(struct lbs_private *priv)
873 {
874 struct cmd_ds_802_11_set_wep cmd;
875 int i;
876 int ret;
877
878 /*
879 * command 13 00
880 * size 50 00
881 * sequence xx xx
882 * result 00 00
883 * action 02 00 ACT_ADD
884 * transmit key 00 00
885 * type for key 1 01 WEP40
886 * type for key 2 00
887 * type for key 3 00
888 * type for key 4 00
889 * key 1 39 39 39 39 39 00 00 00
890 * 00 00 00 00 00 00 00 00
891 * key 2 00 00 00 00 00 00 00 00
892 * 00 00 00 00 00 00 00 00
893 * key 3 00 00 00 00 00 00 00 00
894 * 00 00 00 00 00 00 00 00
895 * key 4 00 00 00 00 00 00 00 00
896 */
897 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
898 priv->wep_key_len[2] || priv->wep_key_len[3]) {
899 /* Only set wep keys if we have at least one of them */
900 memset(&cmd, 0, sizeof(cmd));
901 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
902 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
903 cmd.action = cpu_to_le16(CMD_ACT_ADD);
904
905 for (i = 0; i < 4; i++) {
906 switch (priv->wep_key_len[i]) {
907 case WLAN_KEY_LEN_WEP40:
908 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
909 break;
910 case WLAN_KEY_LEN_WEP104:
911 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
912 break;
913 default:
914 cmd.keytype[i] = 0;
915 break;
916 }
917 memcpy(cmd.keymaterial[i], priv->wep_key[i],
918 priv->wep_key_len[i]);
919 }
920
921 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
922 } else {
923 /* Otherwise remove all wep keys */
924 ret = lbs_remove_wep_keys(priv);
925 }
926
927 return ret;
928 }
929
930
931 /*
932 * Enable/Disable RSN status
933 */
934 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
935 {
936 struct cmd_ds_802_11_enable_rsn cmd;
937 int ret;
938
939 /*
940 * cmd 2f 00
941 * size 0c 00
942 * sequence xx xx
943 * result 00 00
944 * action 01 00 ACT_SET
945 * enable 01 00
946 */
947 memset(&cmd, 0, sizeof(cmd));
948 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
949 cmd.action = cpu_to_le16(CMD_ACT_SET);
950 cmd.enable = cpu_to_le16(enable);
951
952 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
953
954 return ret;
955 }
956
957
958 /*
959 * Set WPA/WPA key material
960 */
961
962 /*
963 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
964 * get rid of WEXT, this should go into host.h
965 */
966
967 struct cmd_key_material {
968 struct cmd_header hdr;
969
970 __le16 action;
971 struct MrvlIEtype_keyParamSet param;
972 } __packed;
973
974 static int lbs_set_key_material(struct lbs_private *priv,
975 int key_type, int key_info,
976 const u8 *key, u16 key_len)
977 {
978 struct cmd_key_material cmd;
979 int ret;
980
981 /*
982 * Example for WPA (TKIP):
983 *
984 * cmd 5e 00
985 * size 34 00
986 * sequence xx xx
987 * result 00 00
988 * action 01 00
989 * TLV type 00 01 key param
990 * length 00 26
991 * key type 01 00 TKIP
992 * key info 06 00 UNICAST | ENABLED
993 * key len 20 00
994 * key 32 bytes
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.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1000 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1001 cmd.param.keytypeid = cpu_to_le16(key_type);
1002 cmd.param.keyinfo = cpu_to_le16(key_info);
1003 cmd.param.keylen = cpu_to_le16(key_len);
1004 if (key && key_len)
1005 memcpy(cmd.param.key, key, key_len);
1006
1007 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1008
1009 return ret;
1010 }
1011
1012
1013 /*
1014 * Sets the auth type (open, shared, etc) in the firmware. That
1015 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1016 * command doesn't send an authentication frame at all, it just
1017 * stores the auth_type.
1018 */
1019 static int lbs_set_authtype(struct lbs_private *priv,
1020 struct cfg80211_connect_params *sme)
1021 {
1022 struct cmd_ds_802_11_authenticate cmd;
1023 int ret;
1024
1025 /*
1026 * cmd 11 00
1027 * size 19 00
1028 * sequence xx xx
1029 * result 00 00
1030 * BSS id 00 13 19 80 da 30
1031 * auth type 00
1032 * reserved 00 00 00 00 00 00 00 00 00 00
1033 */
1034 memset(&cmd, 0, sizeof(cmd));
1035 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1036 if (sme->bssid)
1037 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1038 /* convert auth_type */
1039 ret = lbs_auth_to_authtype(sme->auth_type);
1040 if (ret < 0)
1041 goto done;
1042
1043 cmd.authtype = ret;
1044 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1045
1046 done:
1047 return ret;
1048 }
1049
1050
1051 /*
1052 * Create association request
1053 */
1054 #define LBS_ASSOC_MAX_CMD_SIZE \
1055 (sizeof(struct cmd_ds_802_11_associate) \
1056 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1057 + LBS_MAX_SSID_TLV_SIZE \
1058 + LBS_MAX_CHANNEL_TLV_SIZE \
1059 + LBS_MAX_CF_PARAM_TLV_SIZE \
1060 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1061 + LBS_MAX_WPA_TLV_SIZE)
1062
1063 static int lbs_associate(struct lbs_private *priv,
1064 struct cfg80211_bss *bss,
1065 struct cfg80211_connect_params *sme)
1066 {
1067 struct cmd_ds_802_11_associate_response *resp;
1068 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1069 GFP_KERNEL);
1070 const u8 *ssid_eid;
1071 size_t len, resp_ie_len;
1072 int status;
1073 int ret;
1074 u8 *pos;
1075 u8 *tmp;
1076
1077 if (!cmd) {
1078 ret = -ENOMEM;
1079 goto done;
1080 }
1081 pos = &cmd->iebuf[0];
1082
1083 /*
1084 * cmd 50 00
1085 * length 34 00
1086 * sequence xx xx
1087 * result 00 00
1088 * BSS id 00 13 19 80 da 30
1089 * capabilities 11 00
1090 * listen interval 0a 00
1091 * beacon interval 00 00
1092 * DTIM period 00
1093 * TLVs xx (up to 512 bytes)
1094 */
1095 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1096
1097 /* Fill in static fields */
1098 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1099 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1100 cmd->capability = cpu_to_le16(bss->capability);
1101
1102 /* add SSID TLV */
1103 rcu_read_lock();
1104 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1105 if (ssid_eid)
1106 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1107 else
1108 lbs_deb_assoc("no SSID\n");
1109 rcu_read_unlock();
1110
1111 /* add DS param TLV */
1112 if (bss->channel)
1113 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1114 else
1115 lbs_deb_assoc("no channel\n");
1116
1117 /* add (empty) CF param TLV */
1118 pos += lbs_add_cf_param_tlv(pos);
1119
1120 /* add rates TLV */
1121 tmp = pos + 4; /* skip Marvell IE header */
1122 pos += lbs_add_common_rates_tlv(pos, bss);
1123 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1124
1125 /* add auth type TLV */
1126 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1127 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1128
1129 /* add WPA/WPA2 TLV */
1130 if (sme->ie && sme->ie_len)
1131 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1132
1133 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1134 (u16)(pos - (u8 *) &cmd->iebuf);
1135 cmd->hdr.size = cpu_to_le16(len);
1136
1137 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1138 le16_to_cpu(cmd->hdr.size));
1139
1140 /* store for later use */
1141 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1142
1143 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1144 if (ret)
1145 goto done;
1146
1147 /* generate connect message to cfg80211 */
1148
1149 resp = (void *) cmd; /* recast for easier field access */
1150 status = le16_to_cpu(resp->statuscode);
1151
1152 /* Older FW versions map the IEEE 802.11 Status Code in the association
1153 * response to the following values returned in resp->statuscode:
1154 *
1155 * IEEE Status Code Marvell Status Code
1156 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1157 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1158 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1159 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1160 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1161 * others -> 0x0003 ASSOC_RESULT_REFUSED
1162 *
1163 * Other response codes:
1164 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1165 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1166 * association response from the AP)
1167 */
1168 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1169 switch (status) {
1170 case 0:
1171 break;
1172 case 1:
1173 lbs_deb_assoc("invalid association parameters\n");
1174 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1175 break;
1176 case 2:
1177 lbs_deb_assoc("timer expired while waiting for AP\n");
1178 status = WLAN_STATUS_AUTH_TIMEOUT;
1179 break;
1180 case 3:
1181 lbs_deb_assoc("association refused by AP\n");
1182 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1183 break;
1184 case 4:
1185 lbs_deb_assoc("authentication refused by AP\n");
1186 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1187 break;
1188 default:
1189 lbs_deb_assoc("association failure %d\n", status);
1190 /* v5 OLPC firmware does return the AP status code if
1191 * it's not one of the values above. Let that through.
1192 */
1193 break;
1194 }
1195 }
1196
1197 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1198 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1199 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1200
1201 resp_ie_len = le16_to_cpu(resp->hdr.size)
1202 - sizeof(resp->hdr)
1203 - 6;
1204 cfg80211_connect_result(priv->dev,
1205 priv->assoc_bss,
1206 sme->ie, sme->ie_len,
1207 resp->iebuf, resp_ie_len,
1208 status,
1209 GFP_KERNEL);
1210
1211 if (status == 0) {
1212 /* TODO: get rid of priv->connect_status */
1213 priv->connect_status = LBS_CONNECTED;
1214 netif_carrier_on(priv->dev);
1215 if (!priv->tx_pending_len)
1216 netif_tx_wake_all_queues(priv->dev);
1217 }
1218
1219 kfree(cmd);
1220 done:
1221 return ret;
1222 }
1223
1224 static struct cfg80211_scan_request *
1225 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1226 {
1227 struct cfg80211_scan_request *creq = NULL;
1228 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1229 enum nl80211_band band;
1230
1231 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1232 n_channels * sizeof(void *),
1233 GFP_ATOMIC);
1234 if (!creq)
1235 return NULL;
1236
1237 /* SSIDs come after channels */
1238 creq->ssids = (void *)&creq->channels[n_channels];
1239 creq->n_channels = n_channels;
1240 creq->n_ssids = 1;
1241
1242 /* Scan all available channels */
1243 i = 0;
1244 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1245 int j;
1246
1247 if (!wiphy->bands[band])
1248 continue;
1249
1250 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1251 /* ignore disabled channels */
1252 if (wiphy->bands[band]->channels[j].flags &
1253 IEEE80211_CHAN_DISABLED)
1254 continue;
1255
1256 creq->channels[i] = &wiphy->bands[band]->channels[j];
1257 i++;
1258 }
1259 }
1260 if (i) {
1261 /* Set real number of channels specified in creq->channels[] */
1262 creq->n_channels = i;
1263
1264 /* Scan for the SSID we're going to connect to */
1265 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1266 creq->ssids[0].ssid_len = sme->ssid_len;
1267 } else {
1268 /* No channels found... */
1269 kfree(creq);
1270 creq = NULL;
1271 }
1272
1273 return creq;
1274 }
1275
1276 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1277 struct cfg80211_connect_params *sme)
1278 {
1279 struct lbs_private *priv = wiphy_priv(wiphy);
1280 struct cfg80211_bss *bss = NULL;
1281 int ret = 0;
1282 u8 preamble = RADIO_PREAMBLE_SHORT;
1283
1284 if (dev == priv->mesh_dev)
1285 return -EOPNOTSUPP;
1286
1287 if (!sme->bssid) {
1288 struct cfg80211_scan_request *creq;
1289
1290 /*
1291 * Scan for the requested network after waiting for existing
1292 * scans to finish.
1293 */
1294 lbs_deb_assoc("assoc: waiting for existing scans\n");
1295 wait_event_interruptible_timeout(priv->scan_q,
1296 (priv->scan_req == NULL),
1297 (15 * HZ));
1298
1299 creq = _new_connect_scan_req(wiphy, sme);
1300 if (!creq) {
1301 ret = -EINVAL;
1302 goto done;
1303 }
1304
1305 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1306 _internal_start_scan(priv, true, creq);
1307
1308 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1309 wait_event_interruptible_timeout(priv->scan_q,
1310 (priv->scan_req == NULL),
1311 (15 * HZ));
1312 lbs_deb_assoc("assoc: scanning completed\n");
1313 }
1314
1315 /* Find the BSS we want using available scan results */
1316 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1317 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1318 IEEE80211_PRIVACY_ANY);
1319 if (!bss) {
1320 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1321 sme->bssid);
1322 ret = -ENOENT;
1323 goto done;
1324 }
1325 lbs_deb_assoc("trying %pM\n", bss->bssid);
1326 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1327 sme->crypto.cipher_group,
1328 sme->key_idx, sme->key_len);
1329
1330 /* As this is a new connection, clear locally stored WEP keys */
1331 priv->wep_tx_key = 0;
1332 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1333 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1334
1335 /* set/remove WEP keys */
1336 switch (sme->crypto.cipher_group) {
1337 case WLAN_CIPHER_SUITE_WEP40:
1338 case WLAN_CIPHER_SUITE_WEP104:
1339 /* Store provided WEP keys in priv-> */
1340 priv->wep_tx_key = sme->key_idx;
1341 priv->wep_key_len[sme->key_idx] = sme->key_len;
1342 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1343 /* Set WEP keys and WEP mode */
1344 lbs_set_wep_keys(priv);
1345 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1346 lbs_set_mac_control(priv);
1347 /* No RSN mode for WEP */
1348 lbs_enable_rsn(priv, 0);
1349 break;
1350 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1351 /*
1352 * If we don't have no WEP, no WPA and no WPA2,
1353 * we remove all keys like in the WPA/WPA2 setup,
1354 * we just don't set RSN.
1355 *
1356 * Therefore: fall-through
1357 */
1358 case WLAN_CIPHER_SUITE_TKIP:
1359 case WLAN_CIPHER_SUITE_CCMP:
1360 /* Remove WEP keys and WEP mode */
1361 lbs_remove_wep_keys(priv);
1362 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1363 lbs_set_mac_control(priv);
1364
1365 /* clear the WPA/WPA2 keys */
1366 lbs_set_key_material(priv,
1367 KEY_TYPE_ID_WEP, /* doesn't matter */
1368 KEY_INFO_WPA_UNICAST,
1369 NULL, 0);
1370 lbs_set_key_material(priv,
1371 KEY_TYPE_ID_WEP, /* doesn't matter */
1372 KEY_INFO_WPA_MCAST,
1373 NULL, 0);
1374 /* RSN mode for WPA/WPA2 */
1375 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1376 break;
1377 default:
1378 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1379 sme->crypto.cipher_group);
1380 ret = -ENOTSUPP;
1381 goto done;
1382 }
1383
1384 ret = lbs_set_authtype(priv, sme);
1385 if (ret == -ENOTSUPP) {
1386 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1387 goto done;
1388 }
1389
1390 lbs_set_radio(priv, preamble, 1);
1391
1392 /* Do the actual association */
1393 ret = lbs_associate(priv, bss, sme);
1394
1395 done:
1396 if (bss)
1397 cfg80211_put_bss(wiphy, bss);
1398 return ret;
1399 }
1400
1401 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1402 {
1403 struct cmd_ds_802_11_deauthenticate cmd;
1404 int ret;
1405
1406 memset(&cmd, 0, sizeof(cmd));
1407 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1408 /* Mildly ugly to use a locally store my own BSSID ... */
1409 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1410 cmd.reasoncode = cpu_to_le16(reason);
1411
1412 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1413 if (ret)
1414 return ret;
1415
1416 cfg80211_disconnected(priv->dev,
1417 reason,
1418 NULL, 0, true,
1419 GFP_KERNEL);
1420 priv->connect_status = LBS_DISCONNECTED;
1421
1422 return 0;
1423 }
1424
1425 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1426 u16 reason_code)
1427 {
1428 struct lbs_private *priv = wiphy_priv(wiphy);
1429
1430 if (dev == priv->mesh_dev)
1431 return -EOPNOTSUPP;
1432
1433 /* store for lbs_cfg_ret_disconnect() */
1434 priv->disassoc_reason = reason_code;
1435
1436 return lbs_disconnect(priv, reason_code);
1437 }
1438
1439 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1440 struct net_device *netdev,
1441 u8 key_index, bool unicast,
1442 bool multicast)
1443 {
1444 struct lbs_private *priv = wiphy_priv(wiphy);
1445
1446 if (netdev == priv->mesh_dev)
1447 return -EOPNOTSUPP;
1448
1449 if (key_index != priv->wep_tx_key) {
1450 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1451 priv->wep_tx_key = key_index;
1452 lbs_set_wep_keys(priv);
1453 }
1454
1455 return 0;
1456 }
1457
1458
1459 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1460 u8 idx, bool pairwise, const u8 *mac_addr,
1461 struct key_params *params)
1462 {
1463 struct lbs_private *priv = wiphy_priv(wiphy);
1464 u16 key_info;
1465 u16 key_type;
1466 int ret = 0;
1467
1468 if (netdev == priv->mesh_dev)
1469 return -EOPNOTSUPP;
1470
1471 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1472 params->cipher, mac_addr);
1473 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1474 idx, params->key_len);
1475 if (params->key_len)
1476 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1477 params->key, params->key_len);
1478
1479 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1480 if (params->seq_len)
1481 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1482 params->seq, params->seq_len);
1483
1484 switch (params->cipher) {
1485 case WLAN_CIPHER_SUITE_WEP40:
1486 case WLAN_CIPHER_SUITE_WEP104:
1487 /* actually compare if something has changed ... */
1488 if ((priv->wep_key_len[idx] != params->key_len) ||
1489 memcmp(priv->wep_key[idx],
1490 params->key, params->key_len) != 0) {
1491 priv->wep_key_len[idx] = params->key_len;
1492 memcpy(priv->wep_key[idx],
1493 params->key, params->key_len);
1494 lbs_set_wep_keys(priv);
1495 }
1496 break;
1497 case WLAN_CIPHER_SUITE_TKIP:
1498 case WLAN_CIPHER_SUITE_CCMP:
1499 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1500 ? KEY_INFO_WPA_UNICAST
1501 : KEY_INFO_WPA_MCAST);
1502 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1503 ? KEY_TYPE_ID_TKIP
1504 : KEY_TYPE_ID_AES;
1505 lbs_set_key_material(priv,
1506 key_type,
1507 key_info,
1508 params->key, params->key_len);
1509 break;
1510 default:
1511 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1512 ret = -ENOTSUPP;
1513 break;
1514 }
1515
1516 return ret;
1517 }
1518
1519
1520 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1521 u8 key_index, bool pairwise, const u8 *mac_addr)
1522 {
1523
1524 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1525 key_index, mac_addr);
1526
1527 #ifdef TODO
1528 struct lbs_private *priv = wiphy_priv(wiphy);
1529 /*
1530 * I think can keep this a NO-OP, because:
1531
1532 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1533 * - neither "iw" nor "wpa_supplicant" won't call this during
1534 * an ongoing connection
1535 * - TODO: but I have to check if this is still true when
1536 * I set the AP to periodic re-keying
1537 * - we've not kzallec() something when we've added a key at
1538 * lbs_cfg_connect() or lbs_cfg_add_key().
1539 *
1540 * This causes lbs_cfg_del_key() only called at disconnect time,
1541 * where we'd just waste time deleting a key that is not going
1542 * to be used anyway.
1543 */
1544 if (key_index < 3 && priv->wep_key_len[key_index]) {
1545 priv->wep_key_len[key_index] = 0;
1546 lbs_set_wep_keys(priv);
1547 }
1548 #endif
1549
1550 return 0;
1551 }
1552
1553
1554 /*
1555 * Get station
1556 */
1557
1558 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1559 const u8 *mac, struct station_info *sinfo)
1560 {
1561 struct lbs_private *priv = wiphy_priv(wiphy);
1562 s8 signal, noise;
1563 int ret;
1564 size_t i;
1565
1566 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1567 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1568 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1569 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1570 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1571 sinfo->tx_packets = priv->dev->stats.tx_packets;
1572 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1573 sinfo->rx_packets = priv->dev->stats.rx_packets;
1574
1575 /* Get current RSSI */
1576 ret = lbs_get_rssi(priv, &signal, &noise);
1577 if (ret == 0) {
1578 sinfo->signal = signal;
1579 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1580 }
1581
1582 /* Convert priv->cur_rate from hw_value to NL80211 value */
1583 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1584 if (priv->cur_rate == lbs_rates[i].hw_value) {
1585 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1586 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1587 break;
1588 }
1589 }
1590
1591 return 0;
1592 }
1593
1594
1595
1596
1597 /*
1598 * Change interface
1599 */
1600
1601 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1602 enum nl80211_iftype type,
1603 struct vif_params *params)
1604 {
1605 struct lbs_private *priv = wiphy_priv(wiphy);
1606 int ret = 0;
1607
1608 if (dev == priv->mesh_dev)
1609 return -EOPNOTSUPP;
1610
1611 switch (type) {
1612 case NL80211_IFTYPE_MONITOR:
1613 case NL80211_IFTYPE_STATION:
1614 case NL80211_IFTYPE_ADHOC:
1615 break;
1616 default:
1617 return -EOPNOTSUPP;
1618 }
1619
1620 if (priv->iface_running)
1621 ret = lbs_set_iface_type(priv, type);
1622
1623 if (!ret)
1624 priv->wdev->iftype = type;
1625
1626 return ret;
1627 }
1628
1629
1630
1631 /*
1632 * IBSS (Ad-Hoc)
1633 */
1634
1635 /*
1636 * The firmware needs the following bits masked out of the beacon-derived
1637 * capability field when associating/joining to a BSS:
1638 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1639 */
1640 #define CAPINFO_MASK (~(0xda00))
1641
1642
1643 static void lbs_join_post(struct lbs_private *priv,
1644 struct cfg80211_ibss_params *params,
1645 u8 *bssid, u16 capability)
1646 {
1647 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1648 2 + 4 + /* basic rates */
1649 2 + 1 + /* DS parameter */
1650 2 + 2 + /* atim */
1651 2 + 8]; /* extended rates */
1652 u8 *fake = fake_ie;
1653 struct cfg80211_bss *bss;
1654
1655 /*
1656 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1657 * the real IE from the firmware. So we fabricate a fake IE based on
1658 * what the firmware actually sends (sniffed with wireshark).
1659 */
1660 /* Fake SSID IE */
1661 *fake++ = WLAN_EID_SSID;
1662 *fake++ = params->ssid_len;
1663 memcpy(fake, params->ssid, params->ssid_len);
1664 fake += params->ssid_len;
1665 /* Fake supported basic rates IE */
1666 *fake++ = WLAN_EID_SUPP_RATES;
1667 *fake++ = 4;
1668 *fake++ = 0x82;
1669 *fake++ = 0x84;
1670 *fake++ = 0x8b;
1671 *fake++ = 0x96;
1672 /* Fake DS channel IE */
1673 *fake++ = WLAN_EID_DS_PARAMS;
1674 *fake++ = 1;
1675 *fake++ = params->chandef.chan->hw_value;
1676 /* Fake IBSS params IE */
1677 *fake++ = WLAN_EID_IBSS_PARAMS;
1678 *fake++ = 2;
1679 *fake++ = 0; /* ATIM=0 */
1680 *fake++ = 0;
1681 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1682 * but I don't know how this could be checked */
1683 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1684 *fake++ = 8;
1685 *fake++ = 0x0c;
1686 *fake++ = 0x12;
1687 *fake++ = 0x18;
1688 *fake++ = 0x24;
1689 *fake++ = 0x30;
1690 *fake++ = 0x48;
1691 *fake++ = 0x60;
1692 *fake++ = 0x6c;
1693 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1694
1695 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1696 params->chandef.chan,
1697 CFG80211_BSS_FTYPE_UNKNOWN,
1698 bssid,
1699 0,
1700 capability,
1701 params->beacon_interval,
1702 fake_ie, fake - fake_ie,
1703 0, GFP_KERNEL);
1704 cfg80211_put_bss(priv->wdev->wiphy, bss);
1705
1706 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1707 GFP_KERNEL);
1708
1709 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1710 priv->connect_status = LBS_CONNECTED;
1711 netif_carrier_on(priv->dev);
1712 if (!priv->tx_pending_len)
1713 netif_wake_queue(priv->dev);
1714 }
1715
1716 static int lbs_ibss_join_existing(struct lbs_private *priv,
1717 struct cfg80211_ibss_params *params,
1718 struct cfg80211_bss *bss)
1719 {
1720 const u8 *rates_eid;
1721 struct cmd_ds_802_11_ad_hoc_join cmd;
1722 u8 preamble = RADIO_PREAMBLE_SHORT;
1723 int ret = 0;
1724 int hw, i;
1725 u8 rates_max;
1726 u8 *rates;
1727
1728 /* TODO: set preamble based on scan result */
1729 ret = lbs_set_radio(priv, preamble, 1);
1730 if (ret)
1731 goto out;
1732
1733 /*
1734 * Example CMD_802_11_AD_HOC_JOIN command:
1735 *
1736 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1737 * size 65 00
1738 * sequence xx xx
1739 * result 00 00
1740 * bssid 02 27 27 97 2f 96
1741 * ssid 49 42 53 53 00 00 00 00
1742 * 00 00 00 00 00 00 00 00
1743 * 00 00 00 00 00 00 00 00
1744 * 00 00 00 00 00 00 00 00
1745 * type 02 CMD_BSS_TYPE_IBSS
1746 * beacon period 64 00
1747 * dtim period 00
1748 * timestamp 00 00 00 00 00 00 00 00
1749 * localtime 00 00 00 00 00 00 00 00
1750 * IE DS 03
1751 * IE DS len 01
1752 * IE DS channel 01
1753 * reserveed 00 00 00 00
1754 * IE IBSS 06
1755 * IE IBSS len 02
1756 * IE IBSS atim 00 00
1757 * reserved 00 00 00 00
1758 * capability 02 00
1759 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1760 * fail timeout ff 00
1761 * probe delay 00 00
1762 */
1763 memset(&cmd, 0, sizeof(cmd));
1764 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1765
1766 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1767 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1768 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1769 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1770 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1771 cmd.bss.ds.header.len = 1;
1772 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1773 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1774 cmd.bss.ibss.header.len = 2;
1775 cmd.bss.ibss.atimwindow = 0;
1776 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1777
1778 /* set rates to the intersection of our rates and the rates in the
1779 bss */
1780 rcu_read_lock();
1781 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1782 if (!rates_eid) {
1783 lbs_add_rates(cmd.bss.rates);
1784 } else {
1785 rates_max = rates_eid[1];
1786 if (rates_max > MAX_RATES) {
1787 lbs_deb_join("invalid rates");
1788 rcu_read_unlock();
1789 ret = -EINVAL;
1790 goto out;
1791 }
1792 rates = cmd.bss.rates;
1793 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1794 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1795 for (i = 0; i < rates_max; i++) {
1796 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1797 u8 rate = rates_eid[i+2];
1798 if (rate == 0x02 || rate == 0x04 ||
1799 rate == 0x0b || rate == 0x16)
1800 rate |= 0x80;
1801 *rates++ = rate;
1802 }
1803 }
1804 }
1805 }
1806 rcu_read_unlock();
1807
1808 /* Only v8 and below support setting this */
1809 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1810 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1811 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1812 }
1813 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1814 if (ret)
1815 goto out;
1816
1817 /*
1818 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1819 *
1820 * response 2c 80
1821 * size 09 00
1822 * sequence xx xx
1823 * result 00 00
1824 * reserved 00
1825 */
1826 lbs_join_post(priv, params, bss->bssid, bss->capability);
1827
1828 out:
1829 return ret;
1830 }
1831
1832
1833
1834 static int lbs_ibss_start_new(struct lbs_private *priv,
1835 struct cfg80211_ibss_params *params)
1836 {
1837 struct cmd_ds_802_11_ad_hoc_start cmd;
1838 struct cmd_ds_802_11_ad_hoc_result *resp =
1839 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1840 u8 preamble = RADIO_PREAMBLE_SHORT;
1841 int ret = 0;
1842 u16 capability;
1843
1844 ret = lbs_set_radio(priv, preamble, 1);
1845 if (ret)
1846 goto out;
1847
1848 /*
1849 * Example CMD_802_11_AD_HOC_START command:
1850 *
1851 * command 2b 00 CMD_802_11_AD_HOC_START
1852 * size b1 00
1853 * sequence xx xx
1854 * result 00 00
1855 * ssid 54 45 53 54 00 00 00 00
1856 * 00 00 00 00 00 00 00 00
1857 * 00 00 00 00 00 00 00 00
1858 * 00 00 00 00 00 00 00 00
1859 * bss type 02
1860 * beacon period 64 00
1861 * dtim period 00
1862 * IE IBSS 06
1863 * IE IBSS len 02
1864 * IE IBSS atim 00 00
1865 * reserved 00 00 00 00
1866 * IE DS 03
1867 * IE DS len 01
1868 * IE DS channel 01
1869 * reserved 00 00 00 00
1870 * probe delay 00 00
1871 * capability 02 00
1872 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1873 * 0c 12 18 24 30 48 60 6c
1874 * padding 100 bytes
1875 */
1876 memset(&cmd, 0, sizeof(cmd));
1877 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1878 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1879 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1880 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1881 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1882 cmd.ibss.header.len = 2;
1883 cmd.ibss.atimwindow = 0;
1884 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1885 cmd.ds.header.len = 1;
1886 cmd.ds.channel = params->chandef.chan->hw_value;
1887 /* Only v8 and below support setting probe delay */
1888 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1889 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1890 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1891 capability = WLAN_CAPABILITY_IBSS;
1892 cmd.capability = cpu_to_le16(capability);
1893 lbs_add_rates(cmd.rates);
1894
1895
1896 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1897 if (ret)
1898 goto out;
1899
1900 /*
1901 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1902 *
1903 * response 2b 80
1904 * size 14 00
1905 * sequence xx xx
1906 * result 00 00
1907 * reserved 00
1908 * bssid 02 2b 7b 0f 86 0e
1909 */
1910 lbs_join_post(priv, params, resp->bssid, capability);
1911
1912 out:
1913 return ret;
1914 }
1915
1916
1917 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1918 struct cfg80211_ibss_params *params)
1919 {
1920 struct lbs_private *priv = wiphy_priv(wiphy);
1921 int ret = 0;
1922 struct cfg80211_bss *bss;
1923
1924 if (dev == priv->mesh_dev)
1925 return -EOPNOTSUPP;
1926
1927 if (!params->chandef.chan) {
1928 ret = -ENOTSUPP;
1929 goto out;
1930 }
1931
1932 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1933 if (ret)
1934 goto out;
1935
1936 /* Search if someone is beaconing. This assumes that the
1937 * bss list is populated already */
1938 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1939 params->ssid, params->ssid_len,
1940 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1941
1942 if (bss) {
1943 ret = lbs_ibss_join_existing(priv, params, bss);
1944 cfg80211_put_bss(wiphy, bss);
1945 } else
1946 ret = lbs_ibss_start_new(priv, params);
1947
1948
1949 out:
1950 return ret;
1951 }
1952
1953
1954 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1955 {
1956 struct lbs_private *priv = wiphy_priv(wiphy);
1957 struct cmd_ds_802_11_ad_hoc_stop cmd;
1958 int ret = 0;
1959
1960 if (dev == priv->mesh_dev)
1961 return -EOPNOTSUPP;
1962
1963 memset(&cmd, 0, sizeof(cmd));
1964 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1965 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1966
1967 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1968 lbs_mac_event_disconnected(priv, true);
1969
1970 return ret;
1971 }
1972
1973
1974
1975 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1976 bool enabled, int timeout)
1977 {
1978 struct lbs_private *priv = wiphy_priv(wiphy);
1979
1980 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
1981 if (!enabled)
1982 return 0;
1983 else
1984 return -EINVAL;
1985 }
1986 /* firmware does not work well with too long latency with power saving
1987 * enabled, so do not enable it if there is only polling, no
1988 * interrupts (like in some sdio hosts which can only
1989 * poll for sdio irqs)
1990 */
1991 if (priv->is_polling) {
1992 if (!enabled)
1993 return 0;
1994 else
1995 return -EINVAL;
1996 }
1997 if (!enabled) {
1998 priv->psmode = LBS802_11POWERMODECAM;
1999 if (priv->psstate != PS_STATE_FULL_POWER)
2000 lbs_set_ps_mode(priv,
2001 PS_MODE_ACTION_EXIT_PS,
2002 true);
2003 return 0;
2004 }
2005 if (priv->psmode != LBS802_11POWERMODECAM)
2006 return 0;
2007 priv->psmode = LBS802_11POWERMODEMAX_PSP;
2008 if (priv->connect_status == LBS_CONNECTED)
2009 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2010 return 0;
2011 }
2012
2013 /*
2014 * Initialization
2015 */
2016
2017 static const struct cfg80211_ops lbs_cfg80211_ops = {
2018 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2019 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2020 .scan = lbs_cfg_scan,
2021 .connect = lbs_cfg_connect,
2022 .disconnect = lbs_cfg_disconnect,
2023 .add_key = lbs_cfg_add_key,
2024 .del_key = lbs_cfg_del_key,
2025 .set_default_key = lbs_cfg_set_default_key,
2026 .get_station = lbs_cfg_get_station,
2027 .change_virtual_intf = lbs_change_intf,
2028 .join_ibss = lbs_join_ibss,
2029 .leave_ibss = lbs_leave_ibss,
2030 .set_power_mgmt = lbs_set_power_mgmt,
2031 };
2032
2033
2034 /*
2035 * At this time lbs_private *priv doesn't even exist, so we just allocate
2036 * memory and don't initialize the wiphy further. This is postponed until we
2037 * can talk to the firmware and happens at registration time in
2038 * lbs_cfg_wiphy_register().
2039 */
2040 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2041 {
2042 int ret = 0;
2043 struct wireless_dev *wdev;
2044
2045 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2046 if (!wdev)
2047 return ERR_PTR(-ENOMEM);
2048
2049 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2050 if (!wdev->wiphy) {
2051 dev_err(dev, "cannot allocate wiphy\n");
2052 ret = -ENOMEM;
2053 goto err_wiphy_new;
2054 }
2055
2056 return wdev;
2057
2058 err_wiphy_new:
2059 kfree(wdev);
2060 return ERR_PTR(ret);
2061 }
2062
2063
2064 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2065 {
2066 struct region_code_mapping {
2067 const char *cn;
2068 int code;
2069 };
2070
2071 /* Section 5.17.2 */
2072 static const struct region_code_mapping regmap[] = {
2073 {"US ", 0x10}, /* US FCC */
2074 {"CA ", 0x20}, /* Canada */
2075 {"EU ", 0x30}, /* ETSI */
2076 {"ES ", 0x31}, /* Spain */
2077 {"FR ", 0x32}, /* France */
2078 {"JP ", 0x40}, /* Japan */
2079 };
2080 size_t i;
2081
2082 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2083 if (regmap[i].code == priv->regioncode) {
2084 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2085 break;
2086 }
2087 }
2088
2089 static void lbs_reg_notifier(struct wiphy *wiphy,
2090 struct regulatory_request *request)
2091 {
2092 struct lbs_private *priv = wiphy_priv(wiphy);
2093
2094 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2095 if (lbs_iface_active(priv))
2096 lbs_set_11d_domain_info(priv);
2097 }
2098
2099 /*
2100 * This function get's called after lbs_setup_firmware() determined the
2101 * firmware capabities. So we can setup the wiphy according to our
2102 * hardware/firmware.
2103 */
2104 int lbs_cfg_register(struct lbs_private *priv)
2105 {
2106 struct wireless_dev *wdev = priv->wdev;
2107 int ret;
2108
2109 wdev->wiphy->max_scan_ssids = 1;
2110 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2111
2112 wdev->wiphy->interface_modes =
2113 BIT(NL80211_IFTYPE_STATION) |
2114 BIT(NL80211_IFTYPE_ADHOC);
2115 if (lbs_rtap_supported(priv))
2116 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2117 if (lbs_mesh_activated(priv))
2118 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2119
2120 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2121
2122 /*
2123 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2124 * never seen a firmware without WPA
2125 */
2126 wdev->wiphy->cipher_suites = cipher_suites;
2127 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2128 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2129
2130 ret = wiphy_register(wdev->wiphy);
2131 if (ret < 0)
2132 pr_err("cannot register wiphy device\n");
2133
2134 priv->wiphy_registered = true;
2135
2136 ret = register_netdev(priv->dev);
2137 if (ret)
2138 pr_err("cannot register network device\n");
2139
2140 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2141
2142 lbs_cfg_set_regulatory_hint(priv);
2143
2144 return ret;
2145 }
2146
2147 void lbs_scan_deinit(struct lbs_private *priv)
2148 {
2149 cancel_delayed_work_sync(&priv->scan_work);
2150 }
2151
2152
2153 void lbs_cfg_free(struct lbs_private *priv)
2154 {
2155 struct wireless_dev *wdev = priv->wdev;
2156
2157 if (!wdev)
2158 return;
2159
2160 if (priv->wiphy_registered)
2161 wiphy_unregister(wdev->wiphy);
2162
2163 if (wdev->wiphy)
2164 wiphy_free(wdev->wiphy);
2165
2166 kfree(wdev);
2167 }
Linux with added FPC-III support