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Merge tag 'iio-fixes-for-4.13a' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-focal-kernel.git] / drivers / net / wireless / marvell / libertas / cfg.c
1 /*
2 * Implement cfg80211 ("iw") support.
3 *
4 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
5 * Holger Schurig <hs4233@mail.mn-solutions.de>
6 *
7 */
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #include <linux/hardirq.h>
12 #include <linux/sched.h>
13 #include <linux/wait.h>
14 #include <linux/slab.h>
15 #include <linux/ieee80211.h>
16 #include <net/cfg80211.h>
17 #include <asm/unaligned.h>
18
19 #include "decl.h"
20 #include "cfg.h"
21 #include "cmd.h"
22 #include "mesh.h"
23
24
25 #define CHAN2G(_channel, _freq, _flags) { \
26 .band = NL80211_BAND_2GHZ, \
27 .center_freq = (_freq), \
28 .hw_value = (_channel), \
29 .flags = (_flags), \
30 .max_antenna_gain = 0, \
31 .max_power = 30, \
32 }
33
34 static struct ieee80211_channel lbs_2ghz_channels[] = {
35 CHAN2G(1, 2412, 0),
36 CHAN2G(2, 2417, 0),
37 CHAN2G(3, 2422, 0),
38 CHAN2G(4, 2427, 0),
39 CHAN2G(5, 2432, 0),
40 CHAN2G(6, 2437, 0),
41 CHAN2G(7, 2442, 0),
42 CHAN2G(8, 2447, 0),
43 CHAN2G(9, 2452, 0),
44 CHAN2G(10, 2457, 0),
45 CHAN2G(11, 2462, 0),
46 CHAN2G(12, 2467, 0),
47 CHAN2G(13, 2472, 0),
48 CHAN2G(14, 2484, 0),
49 };
50
51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
52 .bitrate = (_rate), \
53 .hw_value = (_hw_value), \
54 .flags = (_flags), \
55 }
56
57
58 /* Table 6 in section 3.2.1.1 */
59 static struct ieee80211_rate lbs_rates[] = {
60 RATETAB_ENT(10, 0, 0),
61 RATETAB_ENT(20, 1, 0),
62 RATETAB_ENT(55, 2, 0),
63 RATETAB_ENT(110, 3, 0),
64 RATETAB_ENT(60, 9, 0),
65 RATETAB_ENT(90, 6, 0),
66 RATETAB_ENT(120, 7, 0),
67 RATETAB_ENT(180, 8, 0),
68 RATETAB_ENT(240, 9, 0),
69 RATETAB_ENT(360, 10, 0),
70 RATETAB_ENT(480, 11, 0),
71 RATETAB_ENT(540, 12, 0),
72 };
73
74 static struct ieee80211_supported_band lbs_band_2ghz = {
75 .channels = lbs_2ghz_channels,
76 .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
77 .bitrates = lbs_rates,
78 .n_bitrates = ARRAY_SIZE(lbs_rates),
79 };
80
81
82 static const u32 cipher_suites[] = {
83 WLAN_CIPHER_SUITE_WEP40,
84 WLAN_CIPHER_SUITE_WEP104,
85 WLAN_CIPHER_SUITE_TKIP,
86 WLAN_CIPHER_SUITE_CCMP,
87 };
88
89 /* Time to stay on the channel */
90 #define LBS_DWELL_PASSIVE 100
91 #define LBS_DWELL_ACTIVE 40
92
93
94 /***************************************************************************
95 * Misc utility functions
96 *
97 * TLVs are Marvell specific. They are very similar to IEs, they have the
98 * same structure: type, length, data*. The only difference: for IEs, the
99 * type and length are u8, but for TLVs they're __le16.
100 */
101
102 /*
103 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
104 * in the firmware spec
105 */
106 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
107 {
108 int ret = -ENOTSUPP;
109
110 switch (auth_type) {
111 case NL80211_AUTHTYPE_OPEN_SYSTEM:
112 case NL80211_AUTHTYPE_SHARED_KEY:
113 ret = auth_type;
114 break;
115 case NL80211_AUTHTYPE_AUTOMATIC:
116 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
117 break;
118 case NL80211_AUTHTYPE_NETWORK_EAP:
119 ret = 0x80;
120 break;
121 default:
122 /* silence compiler */
123 break;
124 }
125 return ret;
126 }
127
128
129 /*
130 * Various firmware commands need the list of supported rates, but with
131 * the hight-bit set for basic rates
132 */
133 static int lbs_add_rates(u8 *rates)
134 {
135 size_t i;
136
137 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
138 u8 rate = lbs_rates[i].bitrate / 5;
139 if (rate == 0x02 || rate == 0x04 ||
140 rate == 0x0b || rate == 0x16)
141 rate |= 0x80;
142 rates[i] = rate;
143 }
144 return ARRAY_SIZE(lbs_rates);
145 }
146
147
148 /***************************************************************************
149 * TLV utility functions
150 *
151 * TLVs are Marvell specific. They are very similar to IEs, they have the
152 * same structure: type, length, data*. The only difference: for IEs, the
153 * type and length are u8, but for TLVs they're __le16.
154 */
155
156
157 /*
158 * Add ssid TLV
159 */
160 #define LBS_MAX_SSID_TLV_SIZE \
161 (sizeof(struct mrvl_ie_header) \
162 + IEEE80211_MAX_SSID_LEN)
163
164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
165 {
166 struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
167
168 /*
169 * TLV-ID SSID 00 00
170 * length 06 00
171 * ssid 4d 4e 54 45 53 54
172 */
173 ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
174 ssid_tlv->header.len = cpu_to_le16(ssid_len);
175 memcpy(ssid_tlv->ssid, ssid, ssid_len);
176 return sizeof(ssid_tlv->header) + ssid_len;
177 }
178
179
180 /*
181 * Add channel list TLV (section 8.4.2)
182 *
183 * Actual channel data comes from priv->wdev->wiphy->channels.
184 */
185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE \
186 (sizeof(struct mrvl_ie_header) \
187 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
188
189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
190 int last_channel, int active_scan)
191 {
192 int chanscanparamsize = sizeof(struct chanscanparamset) *
193 (last_channel - priv->scan_channel);
194
195 struct mrvl_ie_header *header = (void *) tlv;
196
197 /*
198 * TLV-ID CHANLIST 01 01
199 * length 0e 00
200 * channel 00 01 00 00 00 64 00
201 * radio type 00
202 * channel 01
203 * scan type 00
204 * min scan time 00 00
205 * max scan time 64 00
206 * channel 2 00 02 00 00 00 64 00
207 *
208 */
209
210 header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
211 header->len = cpu_to_le16(chanscanparamsize);
212 tlv += sizeof(struct mrvl_ie_header);
213
214 /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
215 last_channel); */
216 memset(tlv, 0, chanscanparamsize);
217
218 while (priv->scan_channel < last_channel) {
219 struct chanscanparamset *param = (void *) tlv;
220
221 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
222 param->channumber =
223 priv->scan_req->channels[priv->scan_channel]->hw_value;
224 if (active_scan) {
225 param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
226 } else {
227 param->chanscanmode.passivescan = 1;
228 param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
229 }
230 tlv += sizeof(struct chanscanparamset);
231 priv->scan_channel++;
232 }
233 return sizeof(struct mrvl_ie_header) + chanscanparamsize;
234 }
235
236
237 /*
238 * Add rates TLV
239 *
240 * The rates are in lbs_bg_rates[], but for the 802.11b
241 * rates the high bit is set. We add this TLV only because
242 * there's a firmware which otherwise doesn't report all
243 * APs in range.
244 */
245 #define LBS_MAX_RATES_TLV_SIZE \
246 (sizeof(struct mrvl_ie_header) \
247 + (ARRAY_SIZE(lbs_rates)))
248
249 /* Adds a TLV with all rates the hardware supports */
250 static int lbs_add_supported_rates_tlv(u8 *tlv)
251 {
252 size_t i;
253 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
254
255 /*
256 * TLV-ID RATES 01 00
257 * length 0e 00
258 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c
259 */
260 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
261 tlv += sizeof(rate_tlv->header);
262 i = lbs_add_rates(tlv);
263 tlv += i;
264 rate_tlv->header.len = cpu_to_le16(i);
265 return sizeof(rate_tlv->header) + i;
266 }
267
268 /* Add common rates from a TLV and return the new end of the TLV */
269 static u8 *
270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
271 {
272 int hw, ap, ap_max = ie[1];
273 u8 hw_rate;
274
275 /* Advance past IE header */
276 ie += 2;
277
278 lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
279
280 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
281 hw_rate = lbs_rates[hw].bitrate / 5;
282 for (ap = 0; ap < ap_max; ap++) {
283 if (hw_rate == (ie[ap] & 0x7f)) {
284 *tlv++ = ie[ap];
285 *nrates = *nrates + 1;
286 }
287 }
288 }
289 return tlv;
290 }
291
292 /*
293 * Adds a TLV with all rates the hardware *and* BSS supports.
294 */
295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
296 {
297 struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
298 const u8 *rates_eid, *ext_rates_eid;
299 int n = 0;
300
301 rcu_read_lock();
302 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
303 ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
304
305 /*
306 * 01 00 TLV_TYPE_RATES
307 * 04 00 len
308 * 82 84 8b 96 rates
309 */
310 rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
311 tlv += sizeof(rate_tlv->header);
312
313 /* Add basic rates */
314 if (rates_eid) {
315 tlv = add_ie_rates(tlv, rates_eid, &n);
316
317 /* Add extended rates, if any */
318 if (ext_rates_eid)
319 tlv = add_ie_rates(tlv, ext_rates_eid, &n);
320 } else {
321 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
322 /* Fallback: add basic 802.11b rates */
323 *tlv++ = 0x82;
324 *tlv++ = 0x84;
325 *tlv++ = 0x8b;
326 *tlv++ = 0x96;
327 n = 4;
328 }
329 rcu_read_unlock();
330
331 rate_tlv->header.len = cpu_to_le16(n);
332 return sizeof(rate_tlv->header) + n;
333 }
334
335
336 /*
337 * Add auth type TLV.
338 *
339 * This is only needed for newer firmware (V9 and up).
340 */
341 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
342 sizeof(struct mrvl_ie_auth_type)
343
344 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
345 {
346 struct mrvl_ie_auth_type *auth = (void *) tlv;
347
348 /*
349 * 1f 01 TLV_TYPE_AUTH_TYPE
350 * 01 00 len
351 * 01 auth type
352 */
353 auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
354 auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
355 auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
356 return sizeof(*auth);
357 }
358
359
360 /*
361 * Add channel (phy ds) TLV
362 */
363 #define LBS_MAX_CHANNEL_TLV_SIZE \
364 sizeof(struct mrvl_ie_header)
365
366 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
367 {
368 struct mrvl_ie_ds_param_set *ds = (void *) tlv;
369
370 /*
371 * 03 00 TLV_TYPE_PHY_DS
372 * 01 00 len
373 * 06 channel
374 */
375 ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
376 ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
377 ds->channel = channel;
378 return sizeof(*ds);
379 }
380
381
382 /*
383 * Add (empty) CF param TLV of the form:
384 */
385 #define LBS_MAX_CF_PARAM_TLV_SIZE \
386 sizeof(struct mrvl_ie_header)
387
388 static int lbs_add_cf_param_tlv(u8 *tlv)
389 {
390 struct mrvl_ie_cf_param_set *cf = (void *)tlv;
391
392 /*
393 * 04 00 TLV_TYPE_CF
394 * 06 00 len
395 * 00 cfpcnt
396 * 00 cfpperiod
397 * 00 00 cfpmaxduration
398 * 00 00 cfpdurationremaining
399 */
400 cf->header.type = cpu_to_le16(TLV_TYPE_CF);
401 cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
402 return sizeof(*cf);
403 }
404
405 /*
406 * Add WPA TLV
407 */
408 #define LBS_MAX_WPA_TLV_SIZE \
409 (sizeof(struct mrvl_ie_header) \
410 + 128 /* TODO: I guessed the size */)
411
412 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
413 {
414 size_t tlv_len;
415
416 /*
417 * We need just convert an IE to an TLV. IEs use u8 for the header,
418 * u8 type
419 * u8 len
420 * u8[] data
421 * but TLVs use __le16 instead:
422 * __le16 type
423 * __le16 len
424 * u8[] data
425 */
426 *tlv++ = *ie++;
427 *tlv++ = 0;
428 tlv_len = *tlv++ = *ie++;
429 *tlv++ = 0;
430 while (tlv_len--)
431 *tlv++ = *ie++;
432 /* the TLV is two bytes larger than the IE */
433 return ie_len + 2;
434 }
435
436 /*
437 * Set Channel
438 */
439
440 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
441 struct cfg80211_chan_def *chandef)
442 {
443 struct lbs_private *priv = wiphy_priv(wiphy);
444 int ret = -ENOTSUPP;
445
446 if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
447 goto out;
448
449 ret = lbs_set_channel(priv, chandef->chan->hw_value);
450
451 out:
452 return ret;
453 }
454
455 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
456 struct net_device *netdev,
457 struct ieee80211_channel *channel)
458 {
459 struct lbs_private *priv = wiphy_priv(wiphy);
460 int ret = -ENOTSUPP;
461
462 if (netdev != priv->mesh_dev)
463 goto out;
464
465 ret = lbs_mesh_set_channel(priv, channel->hw_value);
466
467 out:
468 return ret;
469 }
470
471
472
473 /*
474 * Scanning
475 */
476
477 /*
478 * When scanning, the firmware doesn't send a nul packet with the power-safe
479 * bit to the AP. So we cannot stay away from our current channel too long,
480 * otherwise we loose data. So take a "nap" while scanning every other
481 * while.
482 */
483 #define LBS_SCAN_BEFORE_NAP 4
484
485
486 /*
487 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
488 * which isn't really an RSSI, as it becomes larger when moving away from
489 * the AP. Anyway, we need to convert that into mBm.
490 */
491 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
492 ((-(int)rssi + 3)*100)
493
494 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
495 struct cmd_header *resp)
496 {
497 struct cfg80211_bss *bss;
498 struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
499 int bsssize;
500 const u8 *pos;
501 const u8 *tsfdesc;
502 int tsfsize;
503 int i;
504 int ret = -EILSEQ;
505
506 bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
507
508 lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
509 scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
510
511 if (scanresp->nr_sets == 0) {
512 ret = 0;
513 goto done;
514 }
515
516 /*
517 * The general layout of the scan response is described in chapter
518 * 5.7.1. Basically we have a common part, then any number of BSS
519 * descriptor sections. Finally we have section with the same number
520 * of TSFs.
521 *
522 * cmd_ds_802_11_scan_rsp
523 * cmd_header
524 * pos_size
525 * nr_sets
526 * bssdesc 1
527 * bssid
528 * rssi
529 * timestamp
530 * intvl
531 * capa
532 * IEs
533 * bssdesc 2
534 * bssdesc n
535 * MrvlIEtypes_TsfFimestamp_t
536 * TSF for BSS 1
537 * TSF for BSS 2
538 * TSF for BSS n
539 */
540
541 pos = scanresp->bssdesc_and_tlvbuffer;
542
543 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
544 scanresp->bssdescriptsize);
545
546 tsfdesc = pos + bsssize;
547 tsfsize = 4 + 8 * scanresp->nr_sets;
548 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
549
550 /* Validity check: we expect a Marvell-Local TLV */
551 i = get_unaligned_le16(tsfdesc);
552 tsfdesc += 2;
553 if (i != TLV_TYPE_TSFTIMESTAMP) {
554 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
555 goto done;
556 }
557
558 /*
559 * Validity check: the TLV holds TSF values with 8 bytes each, so
560 * the size in the TLV must match the nr_sets value
561 */
562 i = get_unaligned_le16(tsfdesc);
563 tsfdesc += 2;
564 if (i / 8 != scanresp->nr_sets) {
565 lbs_deb_scan("scan response: invalid number of TSF timestamp "
566 "sets (expected %d got %d)\n", scanresp->nr_sets,
567 i / 8);
568 goto done;
569 }
570
571 for (i = 0; i < scanresp->nr_sets; i++) {
572 const u8 *bssid;
573 const u8 *ie;
574 int left;
575 int ielen;
576 int rssi;
577 u16 intvl;
578 u16 capa;
579 int chan_no = -1;
580 const u8 *ssid = NULL;
581 u8 ssid_len = 0;
582
583 int len = get_unaligned_le16(pos);
584 pos += 2;
585
586 /* BSSID */
587 bssid = pos;
588 pos += ETH_ALEN;
589 /* RSSI */
590 rssi = *pos++;
591 /* Packet time stamp */
592 pos += 8;
593 /* Beacon interval */
594 intvl = get_unaligned_le16(pos);
595 pos += 2;
596 /* Capabilities */
597 capa = get_unaligned_le16(pos);
598 pos += 2;
599
600 /* To find out the channel, we must parse the IEs */
601 ie = pos;
602 /*
603 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
604 * interval, capabilities
605 */
606 ielen = left = len - (6 + 1 + 8 + 2 + 2);
607 while (left >= 2) {
608 u8 id, elen;
609 id = *pos++;
610 elen = *pos++;
611 left -= 2;
612 if (elen > left) {
613 lbs_deb_scan("scan response: invalid IE fmt\n");
614 goto done;
615 }
616
617 if (id == WLAN_EID_DS_PARAMS)
618 chan_no = *pos;
619 if (id == WLAN_EID_SSID) {
620 ssid = pos;
621 ssid_len = elen;
622 }
623 left -= elen;
624 pos += elen;
625 }
626
627 /* No channel, no luck */
628 if (chan_no != -1) {
629 struct wiphy *wiphy = priv->wdev->wiphy;
630 int freq = ieee80211_channel_to_frequency(chan_no,
631 NL80211_BAND_2GHZ);
632 struct ieee80211_channel *channel =
633 ieee80211_get_channel(wiphy, freq);
634
635 lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
636 bssid, capa, chan_no, ssid_len, ssid,
637 LBS_SCAN_RSSI_TO_MBM(rssi)/100);
638
639 if (channel &&
640 !(channel->flags & IEEE80211_CHAN_DISABLED)) {
641 bss = cfg80211_inform_bss(wiphy, channel,
642 CFG80211_BSS_FTYPE_UNKNOWN,
643 bssid, get_unaligned_le64(tsfdesc),
644 capa, intvl, ie, ielen,
645 LBS_SCAN_RSSI_TO_MBM(rssi),
646 GFP_KERNEL);
647 cfg80211_put_bss(wiphy, bss);
648 }
649 } else
650 lbs_deb_scan("scan response: missing BSS channel IE\n");
651
652 tsfdesc += 8;
653 }
654 ret = 0;
655
656 done:
657 return ret;
658 }
659
660
661 /*
662 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
663 * TLV and a rates TLV. Determine the maximum size of them:
664 */
665 #define LBS_SCAN_MAX_CMD_SIZE \
666 (sizeof(struct cmd_ds_802_11_scan) \
667 + LBS_MAX_SSID_TLV_SIZE \
668 + LBS_MAX_CHANNEL_LIST_TLV_SIZE \
669 + LBS_MAX_RATES_TLV_SIZE)
670
671 /*
672 * Assumes priv->scan_req is initialized and valid
673 * Assumes priv->scan_channel is initialized
674 */
675 static void lbs_scan_worker(struct work_struct *work)
676 {
677 struct lbs_private *priv =
678 container_of(work, struct lbs_private, scan_work.work);
679 struct cmd_ds_802_11_scan *scan_cmd;
680 u8 *tlv; /* pointer into our current, growing TLV storage area */
681 int last_channel;
682 int running, carrier;
683
684 scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
685 if (scan_cmd == NULL)
686 return;
687
688 /* prepare fixed part of scan command */
689 scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
690
691 /* stop network while we're away from our main channel */
692 running = !netif_queue_stopped(priv->dev);
693 carrier = netif_carrier_ok(priv->dev);
694 if (running)
695 netif_stop_queue(priv->dev);
696 if (carrier)
697 netif_carrier_off(priv->dev);
698
699 /* prepare fixed part of scan command */
700 tlv = scan_cmd->tlvbuffer;
701
702 /* add SSID TLV */
703 if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
704 tlv += lbs_add_ssid_tlv(tlv,
705 priv->scan_req->ssids[0].ssid,
706 priv->scan_req->ssids[0].ssid_len);
707
708 /* add channel TLVs */
709 last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
710 if (last_channel > priv->scan_req->n_channels)
711 last_channel = priv->scan_req->n_channels;
712 tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
713 priv->scan_req->n_ssids);
714
715 /* add rates TLV */
716 tlv += lbs_add_supported_rates_tlv(tlv);
717
718 if (priv->scan_channel < priv->scan_req->n_channels) {
719 cancel_delayed_work(&priv->scan_work);
720 if (netif_running(priv->dev))
721 queue_delayed_work(priv->work_thread, &priv->scan_work,
722 msecs_to_jiffies(300));
723 }
724
725 /* This is the final data we are about to send */
726 scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
727 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
728 sizeof(*scan_cmd));
729 lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
730 tlv - scan_cmd->tlvbuffer);
731
732 __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
733 le16_to_cpu(scan_cmd->hdr.size),
734 lbs_ret_scan, 0);
735
736 if (priv->scan_channel >= priv->scan_req->n_channels) {
737 /* Mark scan done */
738 cancel_delayed_work(&priv->scan_work);
739 lbs_scan_done(priv);
740 }
741
742 /* Restart network */
743 if (carrier)
744 netif_carrier_on(priv->dev);
745 if (running && !priv->tx_pending_len)
746 netif_wake_queue(priv->dev);
747
748 kfree(scan_cmd);
749
750 /* Wake up anything waiting on scan completion */
751 if (priv->scan_req == NULL) {
752 lbs_deb_scan("scan: waking up waiters\n");
753 wake_up_all(&priv->scan_q);
754 }
755 }
756
757 static void _internal_start_scan(struct lbs_private *priv, bool internal,
758 struct cfg80211_scan_request *request)
759 {
760 lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
761 request->n_ssids, request->n_channels, request->ie_len);
762
763 priv->scan_channel = 0;
764 priv->scan_req = request;
765 priv->internal_scan = internal;
766
767 queue_delayed_work(priv->work_thread, &priv->scan_work,
768 msecs_to_jiffies(50));
769 }
770
771 /*
772 * Clean up priv->scan_req. Should be used to handle the allocation details.
773 */
774 void lbs_scan_done(struct lbs_private *priv)
775 {
776 WARN_ON(!priv->scan_req);
777
778 if (priv->internal_scan) {
779 kfree(priv->scan_req);
780 } else {
781 struct cfg80211_scan_info info = {
782 .aborted = false,
783 };
784
785 cfg80211_scan_done(priv->scan_req, &info);
786 }
787
788 priv->scan_req = NULL;
789 }
790
791 static int lbs_cfg_scan(struct wiphy *wiphy,
792 struct cfg80211_scan_request *request)
793 {
794 struct lbs_private *priv = wiphy_priv(wiphy);
795 int ret = 0;
796
797 if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
798 /* old scan request not yet processed */
799 ret = -EAGAIN;
800 goto out;
801 }
802
803 _internal_start_scan(priv, false, request);
804
805 if (priv->surpriseremoved)
806 ret = -EIO;
807
808 out:
809 return ret;
810 }
811
812
813
814
815 /*
816 * Events
817 */
818
819 void lbs_send_disconnect_notification(struct lbs_private *priv,
820 bool locally_generated)
821 {
822 cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
823 GFP_KERNEL);
824 }
825
826 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
827 {
828 cfg80211_michael_mic_failure(priv->dev,
829 priv->assoc_bss,
830 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
831 NL80211_KEYTYPE_GROUP :
832 NL80211_KEYTYPE_PAIRWISE,
833 -1,
834 NULL,
835 GFP_KERNEL);
836 }
837
838
839
840
841 /*
842 * Connect/disconnect
843 */
844
845
846 /*
847 * This removes all WEP keys
848 */
849 static int lbs_remove_wep_keys(struct lbs_private *priv)
850 {
851 struct cmd_ds_802_11_set_wep cmd;
852 int ret;
853
854 memset(&cmd, 0, sizeof(cmd));
855 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
856 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
857 cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
858
859 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
860
861 return ret;
862 }
863
864 /*
865 * Set WEP keys
866 */
867 static int lbs_set_wep_keys(struct lbs_private *priv)
868 {
869 struct cmd_ds_802_11_set_wep cmd;
870 int i;
871 int ret;
872
873 /*
874 * command 13 00
875 * size 50 00
876 * sequence xx xx
877 * result 00 00
878 * action 02 00 ACT_ADD
879 * transmit key 00 00
880 * type for key 1 01 WEP40
881 * type for key 2 00
882 * type for key 3 00
883 * type for key 4 00
884 * key 1 39 39 39 39 39 00 00 00
885 * 00 00 00 00 00 00 00 00
886 * key 2 00 00 00 00 00 00 00 00
887 * 00 00 00 00 00 00 00 00
888 * key 3 00 00 00 00 00 00 00 00
889 * 00 00 00 00 00 00 00 00
890 * key 4 00 00 00 00 00 00 00 00
891 */
892 if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
893 priv->wep_key_len[2] || priv->wep_key_len[3]) {
894 /* Only set wep keys if we have at least one of them */
895 memset(&cmd, 0, sizeof(cmd));
896 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
897 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
898 cmd.action = cpu_to_le16(CMD_ACT_ADD);
899
900 for (i = 0; i < 4; i++) {
901 switch (priv->wep_key_len[i]) {
902 case WLAN_KEY_LEN_WEP40:
903 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
904 break;
905 case WLAN_KEY_LEN_WEP104:
906 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
907 break;
908 default:
909 cmd.keytype[i] = 0;
910 break;
911 }
912 memcpy(cmd.keymaterial[i], priv->wep_key[i],
913 priv->wep_key_len[i]);
914 }
915
916 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
917 } else {
918 /* Otherwise remove all wep keys */
919 ret = lbs_remove_wep_keys(priv);
920 }
921
922 return ret;
923 }
924
925
926 /*
927 * Enable/Disable RSN status
928 */
929 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
930 {
931 struct cmd_ds_802_11_enable_rsn cmd;
932 int ret;
933
934 /*
935 * cmd 2f 00
936 * size 0c 00
937 * sequence xx xx
938 * result 00 00
939 * action 01 00 ACT_SET
940 * enable 01 00
941 */
942 memset(&cmd, 0, sizeof(cmd));
943 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
944 cmd.action = cpu_to_le16(CMD_ACT_SET);
945 cmd.enable = cpu_to_le16(enable);
946
947 ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
948
949 return ret;
950 }
951
952
953 /*
954 * Set WPA/WPA key material
955 */
956
957 /*
958 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
959 * get rid of WEXT, this should go into host.h
960 */
961
962 struct cmd_key_material {
963 struct cmd_header hdr;
964
965 __le16 action;
966 struct MrvlIEtype_keyParamSet param;
967 } __packed;
968
969 static int lbs_set_key_material(struct lbs_private *priv,
970 int key_type, int key_info,
971 const u8 *key, u16 key_len)
972 {
973 struct cmd_key_material cmd;
974 int ret;
975
976 /*
977 * Example for WPA (TKIP):
978 *
979 * cmd 5e 00
980 * size 34 00
981 * sequence xx xx
982 * result 00 00
983 * action 01 00
984 * TLV type 00 01 key param
985 * length 00 26
986 * key type 01 00 TKIP
987 * key info 06 00 UNICAST | ENABLED
988 * key len 20 00
989 * key 32 bytes
990 */
991 memset(&cmd, 0, sizeof(cmd));
992 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
993 cmd.action = cpu_to_le16(CMD_ACT_SET);
994 cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
995 cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
996 cmd.param.keytypeid = cpu_to_le16(key_type);
997 cmd.param.keyinfo = cpu_to_le16(key_info);
998 cmd.param.keylen = cpu_to_le16(key_len);
999 if (key && key_len)
1000 memcpy(cmd.param.key, key, key_len);
1001
1002 ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1003
1004 return ret;
1005 }
1006
1007
1008 /*
1009 * Sets the auth type (open, shared, etc) in the firmware. That
1010 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1011 * command doesn't send an authentication frame at all, it just
1012 * stores the auth_type.
1013 */
1014 static int lbs_set_authtype(struct lbs_private *priv,
1015 struct cfg80211_connect_params *sme)
1016 {
1017 struct cmd_ds_802_11_authenticate cmd;
1018 int ret;
1019
1020 /*
1021 * cmd 11 00
1022 * size 19 00
1023 * sequence xx xx
1024 * result 00 00
1025 * BSS id 00 13 19 80 da 30
1026 * auth type 00
1027 * reserved 00 00 00 00 00 00 00 00 00 00
1028 */
1029 memset(&cmd, 0, sizeof(cmd));
1030 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1031 if (sme->bssid)
1032 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1033 /* convert auth_type */
1034 ret = lbs_auth_to_authtype(sme->auth_type);
1035 if (ret < 0)
1036 goto done;
1037
1038 cmd.authtype = ret;
1039 ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1040
1041 done:
1042 return ret;
1043 }
1044
1045
1046 /*
1047 * Create association request
1048 */
1049 #define LBS_ASSOC_MAX_CMD_SIZE \
1050 (sizeof(struct cmd_ds_802_11_associate) \
1051 - 512 /* cmd_ds_802_11_associate.iebuf */ \
1052 + LBS_MAX_SSID_TLV_SIZE \
1053 + LBS_MAX_CHANNEL_TLV_SIZE \
1054 + LBS_MAX_CF_PARAM_TLV_SIZE \
1055 + LBS_MAX_AUTH_TYPE_TLV_SIZE \
1056 + LBS_MAX_WPA_TLV_SIZE)
1057
1058 static int lbs_associate(struct lbs_private *priv,
1059 struct cfg80211_bss *bss,
1060 struct cfg80211_connect_params *sme)
1061 {
1062 struct cmd_ds_802_11_associate_response *resp;
1063 struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1064 GFP_KERNEL);
1065 const u8 *ssid_eid;
1066 size_t len, resp_ie_len;
1067 int status;
1068 int ret;
1069 u8 *pos;
1070 u8 *tmp;
1071
1072 if (!cmd) {
1073 ret = -ENOMEM;
1074 goto done;
1075 }
1076 pos = &cmd->iebuf[0];
1077
1078 /*
1079 * cmd 50 00
1080 * length 34 00
1081 * sequence xx xx
1082 * result 00 00
1083 * BSS id 00 13 19 80 da 30
1084 * capabilities 11 00
1085 * listen interval 0a 00
1086 * beacon interval 00 00
1087 * DTIM period 00
1088 * TLVs xx (up to 512 bytes)
1089 */
1090 cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1091
1092 /* Fill in static fields */
1093 memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1094 cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1095 cmd->capability = cpu_to_le16(bss->capability);
1096
1097 /* add SSID TLV */
1098 rcu_read_lock();
1099 ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1100 if (ssid_eid)
1101 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1102 else
1103 lbs_deb_assoc("no SSID\n");
1104 rcu_read_unlock();
1105
1106 /* add DS param TLV */
1107 if (bss->channel)
1108 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1109 else
1110 lbs_deb_assoc("no channel\n");
1111
1112 /* add (empty) CF param TLV */
1113 pos += lbs_add_cf_param_tlv(pos);
1114
1115 /* add rates TLV */
1116 tmp = pos + 4; /* skip Marvell IE header */
1117 pos += lbs_add_common_rates_tlv(pos, bss);
1118 lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1119
1120 /* add auth type TLV */
1121 if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1122 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1123
1124 /* add WPA/WPA2 TLV */
1125 if (sme->ie && sme->ie_len)
1126 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1127
1128 len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1129 (u16)(pos - (u8 *) &cmd->iebuf);
1130 cmd->hdr.size = cpu_to_le16(len);
1131
1132 lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1133 le16_to_cpu(cmd->hdr.size));
1134
1135 /* store for later use */
1136 memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1137
1138 ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1139 if (ret)
1140 goto done;
1141
1142 /* generate connect message to cfg80211 */
1143
1144 resp = (void *) cmd; /* recast for easier field access */
1145 status = le16_to_cpu(resp->statuscode);
1146
1147 /* Older FW versions map the IEEE 802.11 Status Code in the association
1148 * response to the following values returned in resp->statuscode:
1149 *
1150 * IEEE Status Code Marvell Status Code
1151 * 0 -> 0x0000 ASSOC_RESULT_SUCCESS
1152 * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1153 * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1154 * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1155 * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED
1156 * others -> 0x0003 ASSOC_RESULT_REFUSED
1157 *
1158 * Other response codes:
1159 * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1160 * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1161 * association response from the AP)
1162 */
1163 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1164 switch (status) {
1165 case 0:
1166 break;
1167 case 1:
1168 lbs_deb_assoc("invalid association parameters\n");
1169 status = WLAN_STATUS_CAPS_UNSUPPORTED;
1170 break;
1171 case 2:
1172 lbs_deb_assoc("timer expired while waiting for AP\n");
1173 status = WLAN_STATUS_AUTH_TIMEOUT;
1174 break;
1175 case 3:
1176 lbs_deb_assoc("association refused by AP\n");
1177 status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1178 break;
1179 case 4:
1180 lbs_deb_assoc("authentication refused by AP\n");
1181 status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1182 break;
1183 default:
1184 lbs_deb_assoc("association failure %d\n", status);
1185 /* v5 OLPC firmware does return the AP status code if
1186 * it's not one of the values above. Let that through.
1187 */
1188 break;
1189 }
1190 }
1191
1192 lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1193 "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1194 le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1195
1196 resp_ie_len = le16_to_cpu(resp->hdr.size)
1197 - sizeof(resp->hdr)
1198 - 6;
1199 cfg80211_connect_result(priv->dev,
1200 priv->assoc_bss,
1201 sme->ie, sme->ie_len,
1202 resp->iebuf, resp_ie_len,
1203 status,
1204 GFP_KERNEL);
1205
1206 if (status == 0) {
1207 /* TODO: get rid of priv->connect_status */
1208 priv->connect_status = LBS_CONNECTED;
1209 netif_carrier_on(priv->dev);
1210 if (!priv->tx_pending_len)
1211 netif_tx_wake_all_queues(priv->dev);
1212 }
1213
1214 kfree(cmd);
1215 done:
1216 return ret;
1217 }
1218
1219 static struct cfg80211_scan_request *
1220 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1221 {
1222 struct cfg80211_scan_request *creq = NULL;
1223 int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1224 enum nl80211_band band;
1225
1226 creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1227 n_channels * sizeof(void *),
1228 GFP_ATOMIC);
1229 if (!creq)
1230 return NULL;
1231
1232 /* SSIDs come after channels */
1233 creq->ssids = (void *)&creq->channels[n_channels];
1234 creq->n_channels = n_channels;
1235 creq->n_ssids = 1;
1236
1237 /* Scan all available channels */
1238 i = 0;
1239 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1240 int j;
1241
1242 if (!wiphy->bands[band])
1243 continue;
1244
1245 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1246 /* ignore disabled channels */
1247 if (wiphy->bands[band]->channels[j].flags &
1248 IEEE80211_CHAN_DISABLED)
1249 continue;
1250
1251 creq->channels[i] = &wiphy->bands[band]->channels[j];
1252 i++;
1253 }
1254 }
1255 if (i) {
1256 /* Set real number of channels specified in creq->channels[] */
1257 creq->n_channels = i;
1258
1259 /* Scan for the SSID we're going to connect to */
1260 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1261 creq->ssids[0].ssid_len = sme->ssid_len;
1262 } else {
1263 /* No channels found... */
1264 kfree(creq);
1265 creq = NULL;
1266 }
1267
1268 return creq;
1269 }
1270
1271 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1272 struct cfg80211_connect_params *sme)
1273 {
1274 struct lbs_private *priv = wiphy_priv(wiphy);
1275 struct cfg80211_bss *bss = NULL;
1276 int ret = 0;
1277 u8 preamble = RADIO_PREAMBLE_SHORT;
1278
1279 if (dev == priv->mesh_dev)
1280 return -EOPNOTSUPP;
1281
1282 if (!sme->bssid) {
1283 struct cfg80211_scan_request *creq;
1284
1285 /*
1286 * Scan for the requested network after waiting for existing
1287 * scans to finish.
1288 */
1289 lbs_deb_assoc("assoc: waiting for existing scans\n");
1290 wait_event_interruptible_timeout(priv->scan_q,
1291 (priv->scan_req == NULL),
1292 (15 * HZ));
1293
1294 creq = _new_connect_scan_req(wiphy, sme);
1295 if (!creq) {
1296 ret = -EINVAL;
1297 goto done;
1298 }
1299
1300 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1301 _internal_start_scan(priv, true, creq);
1302
1303 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1304 wait_event_interruptible_timeout(priv->scan_q,
1305 (priv->scan_req == NULL),
1306 (15 * HZ));
1307 lbs_deb_assoc("assoc: scanning completed\n");
1308 }
1309
1310 /* Find the BSS we want using available scan results */
1311 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1312 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1313 IEEE80211_PRIVACY_ANY);
1314 if (!bss) {
1315 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1316 sme->bssid);
1317 ret = -ENOENT;
1318 goto done;
1319 }
1320 lbs_deb_assoc("trying %pM\n", bss->bssid);
1321 lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1322 sme->crypto.cipher_group,
1323 sme->key_idx, sme->key_len);
1324
1325 /* As this is a new connection, clear locally stored WEP keys */
1326 priv->wep_tx_key = 0;
1327 memset(priv->wep_key, 0, sizeof(priv->wep_key));
1328 memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1329
1330 /* set/remove WEP keys */
1331 switch (sme->crypto.cipher_group) {
1332 case WLAN_CIPHER_SUITE_WEP40:
1333 case WLAN_CIPHER_SUITE_WEP104:
1334 /* Store provided WEP keys in priv-> */
1335 priv->wep_tx_key = sme->key_idx;
1336 priv->wep_key_len[sme->key_idx] = sme->key_len;
1337 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1338 /* Set WEP keys and WEP mode */
1339 lbs_set_wep_keys(priv);
1340 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1341 lbs_set_mac_control(priv);
1342 /* No RSN mode for WEP */
1343 lbs_enable_rsn(priv, 0);
1344 break;
1345 case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1346 /*
1347 * If we don't have no WEP, no WPA and no WPA2,
1348 * we remove all keys like in the WPA/WPA2 setup,
1349 * we just don't set RSN.
1350 *
1351 * Therefore: fall-through
1352 */
1353 case WLAN_CIPHER_SUITE_TKIP:
1354 case WLAN_CIPHER_SUITE_CCMP:
1355 /* Remove WEP keys and WEP mode */
1356 lbs_remove_wep_keys(priv);
1357 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1358 lbs_set_mac_control(priv);
1359
1360 /* clear the WPA/WPA2 keys */
1361 lbs_set_key_material(priv,
1362 KEY_TYPE_ID_WEP, /* doesn't matter */
1363 KEY_INFO_WPA_UNICAST,
1364 NULL, 0);
1365 lbs_set_key_material(priv,
1366 KEY_TYPE_ID_WEP, /* doesn't matter */
1367 KEY_INFO_WPA_MCAST,
1368 NULL, 0);
1369 /* RSN mode for WPA/WPA2 */
1370 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1371 break;
1372 default:
1373 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1374 sme->crypto.cipher_group);
1375 ret = -ENOTSUPP;
1376 goto done;
1377 }
1378
1379 ret = lbs_set_authtype(priv, sme);
1380 if (ret == -ENOTSUPP) {
1381 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1382 goto done;
1383 }
1384
1385 lbs_set_radio(priv, preamble, 1);
1386
1387 /* Do the actual association */
1388 ret = lbs_associate(priv, bss, sme);
1389
1390 done:
1391 if (bss)
1392 cfg80211_put_bss(wiphy, bss);
1393 return ret;
1394 }
1395
1396 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1397 {
1398 struct cmd_ds_802_11_deauthenticate cmd;
1399 int ret;
1400
1401 memset(&cmd, 0, sizeof(cmd));
1402 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1403 /* Mildly ugly to use a locally store my own BSSID ... */
1404 memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1405 cmd.reasoncode = cpu_to_le16(reason);
1406
1407 ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1408 if (ret)
1409 return ret;
1410
1411 cfg80211_disconnected(priv->dev,
1412 reason,
1413 NULL, 0, true,
1414 GFP_KERNEL);
1415 priv->connect_status = LBS_DISCONNECTED;
1416
1417 return 0;
1418 }
1419
1420 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1421 u16 reason_code)
1422 {
1423 struct lbs_private *priv = wiphy_priv(wiphy);
1424
1425 if (dev == priv->mesh_dev)
1426 return -EOPNOTSUPP;
1427
1428 /* store for lbs_cfg_ret_disconnect() */
1429 priv->disassoc_reason = reason_code;
1430
1431 return lbs_disconnect(priv, reason_code);
1432 }
1433
1434 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1435 struct net_device *netdev,
1436 u8 key_index, bool unicast,
1437 bool multicast)
1438 {
1439 struct lbs_private *priv = wiphy_priv(wiphy);
1440
1441 if (netdev == priv->mesh_dev)
1442 return -EOPNOTSUPP;
1443
1444 if (key_index != priv->wep_tx_key) {
1445 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1446 priv->wep_tx_key = key_index;
1447 lbs_set_wep_keys(priv);
1448 }
1449
1450 return 0;
1451 }
1452
1453
1454 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1455 u8 idx, bool pairwise, const u8 *mac_addr,
1456 struct key_params *params)
1457 {
1458 struct lbs_private *priv = wiphy_priv(wiphy);
1459 u16 key_info;
1460 u16 key_type;
1461 int ret = 0;
1462
1463 if (netdev == priv->mesh_dev)
1464 return -EOPNOTSUPP;
1465
1466 lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1467 params->cipher, mac_addr);
1468 lbs_deb_assoc("add_key: key index %d, key len %d\n",
1469 idx, params->key_len);
1470 if (params->key_len)
1471 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1472 params->key, params->key_len);
1473
1474 lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1475 if (params->seq_len)
1476 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1477 params->seq, params->seq_len);
1478
1479 switch (params->cipher) {
1480 case WLAN_CIPHER_SUITE_WEP40:
1481 case WLAN_CIPHER_SUITE_WEP104:
1482 /* actually compare if something has changed ... */
1483 if ((priv->wep_key_len[idx] != params->key_len) ||
1484 memcmp(priv->wep_key[idx],
1485 params->key, params->key_len) != 0) {
1486 priv->wep_key_len[idx] = params->key_len;
1487 memcpy(priv->wep_key[idx],
1488 params->key, params->key_len);
1489 lbs_set_wep_keys(priv);
1490 }
1491 break;
1492 case WLAN_CIPHER_SUITE_TKIP:
1493 case WLAN_CIPHER_SUITE_CCMP:
1494 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1495 ? KEY_INFO_WPA_UNICAST
1496 : KEY_INFO_WPA_MCAST);
1497 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1498 ? KEY_TYPE_ID_TKIP
1499 : KEY_TYPE_ID_AES;
1500 lbs_set_key_material(priv,
1501 key_type,
1502 key_info,
1503 params->key, params->key_len);
1504 break;
1505 default:
1506 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1507 ret = -ENOTSUPP;
1508 break;
1509 }
1510
1511 return ret;
1512 }
1513
1514
1515 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1516 u8 key_index, bool pairwise, const u8 *mac_addr)
1517 {
1518
1519 lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1520 key_index, mac_addr);
1521
1522 #ifdef TODO
1523 struct lbs_private *priv = wiphy_priv(wiphy);
1524 /*
1525 * I think can keep this a NO-OP, because:
1526
1527 * - we clear all keys whenever we do lbs_cfg_connect() anyway
1528 * - neither "iw" nor "wpa_supplicant" won't call this during
1529 * an ongoing connection
1530 * - TODO: but I have to check if this is still true when
1531 * I set the AP to periodic re-keying
1532 * - we've not kzallec() something when we've added a key at
1533 * lbs_cfg_connect() or lbs_cfg_add_key().
1534 *
1535 * This causes lbs_cfg_del_key() only called at disconnect time,
1536 * where we'd just waste time deleting a key that is not going
1537 * to be used anyway.
1538 */
1539 if (key_index < 3 && priv->wep_key_len[key_index]) {
1540 priv->wep_key_len[key_index] = 0;
1541 lbs_set_wep_keys(priv);
1542 }
1543 #endif
1544
1545 return 0;
1546 }
1547
1548
1549 /*
1550 * Get station
1551 */
1552
1553 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1554 const u8 *mac, struct station_info *sinfo)
1555 {
1556 struct lbs_private *priv = wiphy_priv(wiphy);
1557 s8 signal, noise;
1558 int ret;
1559 size_t i;
1560
1561 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1562 BIT(NL80211_STA_INFO_TX_PACKETS) |
1563 BIT(NL80211_STA_INFO_RX_BYTES) |
1564 BIT(NL80211_STA_INFO_RX_PACKETS);
1565 sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1566 sinfo->tx_packets = priv->dev->stats.tx_packets;
1567 sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1568 sinfo->rx_packets = priv->dev->stats.rx_packets;
1569
1570 /* Get current RSSI */
1571 ret = lbs_get_rssi(priv, &signal, &noise);
1572 if (ret == 0) {
1573 sinfo->signal = signal;
1574 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1575 }
1576
1577 /* Convert priv->cur_rate from hw_value to NL80211 value */
1578 for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1579 if (priv->cur_rate == lbs_rates[i].hw_value) {
1580 sinfo->txrate.legacy = lbs_rates[i].bitrate;
1581 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1582 break;
1583 }
1584 }
1585
1586 return 0;
1587 }
1588
1589
1590
1591
1592 /*
1593 * Change interface
1594 */
1595
1596 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1597 enum nl80211_iftype type,
1598 struct vif_params *params)
1599 {
1600 struct lbs_private *priv = wiphy_priv(wiphy);
1601 int ret = 0;
1602
1603 if (dev == priv->mesh_dev)
1604 return -EOPNOTSUPP;
1605
1606 switch (type) {
1607 case NL80211_IFTYPE_MONITOR:
1608 case NL80211_IFTYPE_STATION:
1609 case NL80211_IFTYPE_ADHOC:
1610 break;
1611 default:
1612 return -EOPNOTSUPP;
1613 }
1614
1615 if (priv->iface_running)
1616 ret = lbs_set_iface_type(priv, type);
1617
1618 if (!ret)
1619 priv->wdev->iftype = type;
1620
1621 return ret;
1622 }
1623
1624
1625
1626 /*
1627 * IBSS (Ad-Hoc)
1628 */
1629
1630 /*
1631 * The firmware needs the following bits masked out of the beacon-derived
1632 * capability field when associating/joining to a BSS:
1633 * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1634 */
1635 #define CAPINFO_MASK (~(0xda00))
1636
1637
1638 static void lbs_join_post(struct lbs_private *priv,
1639 struct cfg80211_ibss_params *params,
1640 u8 *bssid, u16 capability)
1641 {
1642 u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1643 2 + 4 + /* basic rates */
1644 2 + 1 + /* DS parameter */
1645 2 + 2 + /* atim */
1646 2 + 8]; /* extended rates */
1647 u8 *fake = fake_ie;
1648 struct cfg80211_bss *bss;
1649
1650 /*
1651 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1652 * the real IE from the firmware. So we fabricate a fake IE based on
1653 * what the firmware actually sends (sniffed with wireshark).
1654 */
1655 /* Fake SSID IE */
1656 *fake++ = WLAN_EID_SSID;
1657 *fake++ = params->ssid_len;
1658 memcpy(fake, params->ssid, params->ssid_len);
1659 fake += params->ssid_len;
1660 /* Fake supported basic rates IE */
1661 *fake++ = WLAN_EID_SUPP_RATES;
1662 *fake++ = 4;
1663 *fake++ = 0x82;
1664 *fake++ = 0x84;
1665 *fake++ = 0x8b;
1666 *fake++ = 0x96;
1667 /* Fake DS channel IE */
1668 *fake++ = WLAN_EID_DS_PARAMS;
1669 *fake++ = 1;
1670 *fake++ = params->chandef.chan->hw_value;
1671 /* Fake IBSS params IE */
1672 *fake++ = WLAN_EID_IBSS_PARAMS;
1673 *fake++ = 2;
1674 *fake++ = 0; /* ATIM=0 */
1675 *fake++ = 0;
1676 /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1677 * but I don't know how this could be checked */
1678 *fake++ = WLAN_EID_EXT_SUPP_RATES;
1679 *fake++ = 8;
1680 *fake++ = 0x0c;
1681 *fake++ = 0x12;
1682 *fake++ = 0x18;
1683 *fake++ = 0x24;
1684 *fake++ = 0x30;
1685 *fake++ = 0x48;
1686 *fake++ = 0x60;
1687 *fake++ = 0x6c;
1688 lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1689
1690 bss = cfg80211_inform_bss(priv->wdev->wiphy,
1691 params->chandef.chan,
1692 CFG80211_BSS_FTYPE_UNKNOWN,
1693 bssid,
1694 0,
1695 capability,
1696 params->beacon_interval,
1697 fake_ie, fake - fake_ie,
1698 0, GFP_KERNEL);
1699 cfg80211_put_bss(priv->wdev->wiphy, bss);
1700
1701 memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1702 priv->wdev->ssid_len = params->ssid_len;
1703
1704 cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1705 GFP_KERNEL);
1706
1707 /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1708 priv->connect_status = LBS_CONNECTED;
1709 netif_carrier_on(priv->dev);
1710 if (!priv->tx_pending_len)
1711 netif_wake_queue(priv->dev);
1712 }
1713
1714 static int lbs_ibss_join_existing(struct lbs_private *priv,
1715 struct cfg80211_ibss_params *params,
1716 struct cfg80211_bss *bss)
1717 {
1718 const u8 *rates_eid;
1719 struct cmd_ds_802_11_ad_hoc_join cmd;
1720 u8 preamble = RADIO_PREAMBLE_SHORT;
1721 int ret = 0;
1722
1723 /* TODO: set preamble based on scan result */
1724 ret = lbs_set_radio(priv, preamble, 1);
1725 if (ret)
1726 goto out;
1727
1728 /*
1729 * Example CMD_802_11_AD_HOC_JOIN command:
1730 *
1731 * command 2c 00 CMD_802_11_AD_HOC_JOIN
1732 * size 65 00
1733 * sequence xx xx
1734 * result 00 00
1735 * bssid 02 27 27 97 2f 96
1736 * ssid 49 42 53 53 00 00 00 00
1737 * 00 00 00 00 00 00 00 00
1738 * 00 00 00 00 00 00 00 00
1739 * 00 00 00 00 00 00 00 00
1740 * type 02 CMD_BSS_TYPE_IBSS
1741 * beacon period 64 00
1742 * dtim period 00
1743 * timestamp 00 00 00 00 00 00 00 00
1744 * localtime 00 00 00 00 00 00 00 00
1745 * IE DS 03
1746 * IE DS len 01
1747 * IE DS channel 01
1748 * reserveed 00 00 00 00
1749 * IE IBSS 06
1750 * IE IBSS len 02
1751 * IE IBSS atim 00 00
1752 * reserved 00 00 00 00
1753 * capability 02 00
1754 * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1755 * fail timeout ff 00
1756 * probe delay 00 00
1757 */
1758 memset(&cmd, 0, sizeof(cmd));
1759 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1760
1761 memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1762 memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1763 cmd.bss.type = CMD_BSS_TYPE_IBSS;
1764 cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1765 cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1766 cmd.bss.ds.header.len = 1;
1767 cmd.bss.ds.channel = params->chandef.chan->hw_value;
1768 cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1769 cmd.bss.ibss.header.len = 2;
1770 cmd.bss.ibss.atimwindow = 0;
1771 cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1772
1773 /* set rates to the intersection of our rates and the rates in the
1774 bss */
1775 rcu_read_lock();
1776 rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1777 if (!rates_eid) {
1778 lbs_add_rates(cmd.bss.rates);
1779 } else {
1780 int hw, i;
1781 u8 rates_max = rates_eid[1];
1782 u8 *rates = cmd.bss.rates;
1783 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1784 u8 hw_rate = lbs_rates[hw].bitrate / 5;
1785 for (i = 0; i < rates_max; i++) {
1786 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1787 u8 rate = rates_eid[i+2];
1788 if (rate == 0x02 || rate == 0x04 ||
1789 rate == 0x0b || rate == 0x16)
1790 rate |= 0x80;
1791 *rates++ = rate;
1792 }
1793 }
1794 }
1795 }
1796 rcu_read_unlock();
1797
1798 /* Only v8 and below support setting this */
1799 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1800 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1801 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1802 }
1803 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1804 if (ret)
1805 goto out;
1806
1807 /*
1808 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1809 *
1810 * response 2c 80
1811 * size 09 00
1812 * sequence xx xx
1813 * result 00 00
1814 * reserved 00
1815 */
1816 lbs_join_post(priv, params, bss->bssid, bss->capability);
1817
1818 out:
1819 return ret;
1820 }
1821
1822
1823
1824 static int lbs_ibss_start_new(struct lbs_private *priv,
1825 struct cfg80211_ibss_params *params)
1826 {
1827 struct cmd_ds_802_11_ad_hoc_start cmd;
1828 struct cmd_ds_802_11_ad_hoc_result *resp =
1829 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1830 u8 preamble = RADIO_PREAMBLE_SHORT;
1831 int ret = 0;
1832 u16 capability;
1833
1834 ret = lbs_set_radio(priv, preamble, 1);
1835 if (ret)
1836 goto out;
1837
1838 /*
1839 * Example CMD_802_11_AD_HOC_START command:
1840 *
1841 * command 2b 00 CMD_802_11_AD_HOC_START
1842 * size b1 00
1843 * sequence xx xx
1844 * result 00 00
1845 * ssid 54 45 53 54 00 00 00 00
1846 * 00 00 00 00 00 00 00 00
1847 * 00 00 00 00 00 00 00 00
1848 * 00 00 00 00 00 00 00 00
1849 * bss type 02
1850 * beacon period 64 00
1851 * dtim period 00
1852 * IE IBSS 06
1853 * IE IBSS len 02
1854 * IE IBSS atim 00 00
1855 * reserved 00 00 00 00
1856 * IE DS 03
1857 * IE DS len 01
1858 * IE DS channel 01
1859 * reserved 00 00 00 00
1860 * probe delay 00 00
1861 * capability 02 00
1862 * rates 82 84 8b 96 (basic rates with have bit 7 set)
1863 * 0c 12 18 24 30 48 60 6c
1864 * padding 100 bytes
1865 */
1866 memset(&cmd, 0, sizeof(cmd));
1867 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1868 memcpy(cmd.ssid, params->ssid, params->ssid_len);
1869 cmd.bsstype = CMD_BSS_TYPE_IBSS;
1870 cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1871 cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1872 cmd.ibss.header.len = 2;
1873 cmd.ibss.atimwindow = 0;
1874 cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1875 cmd.ds.header.len = 1;
1876 cmd.ds.channel = params->chandef.chan->hw_value;
1877 /* Only v8 and below support setting probe delay */
1878 if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1879 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1880 /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1881 capability = WLAN_CAPABILITY_IBSS;
1882 cmd.capability = cpu_to_le16(capability);
1883 lbs_add_rates(cmd.rates);
1884
1885
1886 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1887 if (ret)
1888 goto out;
1889
1890 /*
1891 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1892 *
1893 * response 2b 80
1894 * size 14 00
1895 * sequence xx xx
1896 * result 00 00
1897 * reserved 00
1898 * bssid 02 2b 7b 0f 86 0e
1899 */
1900 lbs_join_post(priv, params, resp->bssid, capability);
1901
1902 out:
1903 return ret;
1904 }
1905
1906
1907 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1908 struct cfg80211_ibss_params *params)
1909 {
1910 struct lbs_private *priv = wiphy_priv(wiphy);
1911 int ret = 0;
1912 struct cfg80211_bss *bss;
1913
1914 if (dev == priv->mesh_dev)
1915 return -EOPNOTSUPP;
1916
1917 if (!params->chandef.chan) {
1918 ret = -ENOTSUPP;
1919 goto out;
1920 }
1921
1922 ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1923 if (ret)
1924 goto out;
1925
1926 /* Search if someone is beaconing. This assumes that the
1927 * bss list is populated already */
1928 bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1929 params->ssid, params->ssid_len,
1930 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1931
1932 if (bss) {
1933 ret = lbs_ibss_join_existing(priv, params, bss);
1934 cfg80211_put_bss(wiphy, bss);
1935 } else
1936 ret = lbs_ibss_start_new(priv, params);
1937
1938
1939 out:
1940 return ret;
1941 }
1942
1943
1944 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1945 {
1946 struct lbs_private *priv = wiphy_priv(wiphy);
1947 struct cmd_ds_802_11_ad_hoc_stop cmd;
1948 int ret = 0;
1949
1950 if (dev == priv->mesh_dev)
1951 return -EOPNOTSUPP;
1952
1953 memset(&cmd, 0, sizeof(cmd));
1954 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1955 ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1956
1957 /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1958 lbs_mac_event_disconnected(priv, true);
1959
1960 return ret;
1961 }
1962
1963
1964
1965 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1966 bool enabled, int timeout)
1967 {
1968 struct lbs_private *priv = wiphy_priv(wiphy);
1969
1970 if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
1971 if (!enabled)
1972 return 0;
1973 else
1974 return -EINVAL;
1975 }
1976 /* firmware does not work well with too long latency with power saving
1977 * enabled, so do not enable it if there is only polling, no
1978 * interrupts (like in some sdio hosts which can only
1979 * poll for sdio irqs)
1980 */
1981 if (priv->is_polling) {
1982 if (!enabled)
1983 return 0;
1984 else
1985 return -EINVAL;
1986 }
1987 if (!enabled) {
1988 priv->psmode = LBS802_11POWERMODECAM;
1989 if (priv->psstate != PS_STATE_FULL_POWER)
1990 lbs_set_ps_mode(priv,
1991 PS_MODE_ACTION_EXIT_PS,
1992 true);
1993 return 0;
1994 }
1995 if (priv->psmode != LBS802_11POWERMODECAM)
1996 return 0;
1997 priv->psmode = LBS802_11POWERMODEMAX_PSP;
1998 if (priv->connect_status == LBS_CONNECTED)
1999 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2000 return 0;
2001 }
2002
2003 /*
2004 * Initialization
2005 */
2006
2007 static const struct cfg80211_ops lbs_cfg80211_ops = {
2008 .set_monitor_channel = lbs_cfg_set_monitor_channel,
2009 .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2010 .scan = lbs_cfg_scan,
2011 .connect = lbs_cfg_connect,
2012 .disconnect = lbs_cfg_disconnect,
2013 .add_key = lbs_cfg_add_key,
2014 .del_key = lbs_cfg_del_key,
2015 .set_default_key = lbs_cfg_set_default_key,
2016 .get_station = lbs_cfg_get_station,
2017 .change_virtual_intf = lbs_change_intf,
2018 .join_ibss = lbs_join_ibss,
2019 .leave_ibss = lbs_leave_ibss,
2020 .set_power_mgmt = lbs_set_power_mgmt,
2021 };
2022
2023
2024 /*
2025 * At this time lbs_private *priv doesn't even exist, so we just allocate
2026 * memory and don't initialize the wiphy further. This is postponed until we
2027 * can talk to the firmware and happens at registration time in
2028 * lbs_cfg_wiphy_register().
2029 */
2030 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2031 {
2032 int ret = 0;
2033 struct wireless_dev *wdev;
2034
2035 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2036 if (!wdev)
2037 return ERR_PTR(-ENOMEM);
2038
2039 wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2040 if (!wdev->wiphy) {
2041 dev_err(dev, "cannot allocate wiphy\n");
2042 ret = -ENOMEM;
2043 goto err_wiphy_new;
2044 }
2045
2046 return wdev;
2047
2048 err_wiphy_new:
2049 kfree(wdev);
2050 return ERR_PTR(ret);
2051 }
2052
2053
2054 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2055 {
2056 struct region_code_mapping {
2057 const char *cn;
2058 int code;
2059 };
2060
2061 /* Section 5.17.2 */
2062 static const struct region_code_mapping regmap[] = {
2063 {"US ", 0x10}, /* US FCC */
2064 {"CA ", 0x20}, /* Canada */
2065 {"EU ", 0x30}, /* ETSI */
2066 {"ES ", 0x31}, /* Spain */
2067 {"FR ", 0x32}, /* France */
2068 {"JP ", 0x40}, /* Japan */
2069 };
2070 size_t i;
2071
2072 for (i = 0; i < ARRAY_SIZE(regmap); i++)
2073 if (regmap[i].code == priv->regioncode) {
2074 regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2075 break;
2076 }
2077 }
2078
2079 static void lbs_reg_notifier(struct wiphy *wiphy,
2080 struct regulatory_request *request)
2081 {
2082 struct lbs_private *priv = wiphy_priv(wiphy);
2083
2084 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2085 if (lbs_iface_active(priv))
2086 lbs_set_11d_domain_info(priv);
2087 }
2088
2089 /*
2090 * This function get's called after lbs_setup_firmware() determined the
2091 * firmware capabities. So we can setup the wiphy according to our
2092 * hardware/firmware.
2093 */
2094 int lbs_cfg_register(struct lbs_private *priv)
2095 {
2096 struct wireless_dev *wdev = priv->wdev;
2097 int ret;
2098
2099 wdev->wiphy->max_scan_ssids = 1;
2100 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2101
2102 wdev->wiphy->interface_modes =
2103 BIT(NL80211_IFTYPE_STATION) |
2104 BIT(NL80211_IFTYPE_ADHOC);
2105 if (lbs_rtap_supported(priv))
2106 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2107 if (lbs_mesh_activated(priv))
2108 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2109
2110 wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2111
2112 /*
2113 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2114 * never seen a firmware without WPA
2115 */
2116 wdev->wiphy->cipher_suites = cipher_suites;
2117 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2118 wdev->wiphy->reg_notifier = lbs_reg_notifier;
2119
2120 ret = wiphy_register(wdev->wiphy);
2121 if (ret < 0)
2122 pr_err("cannot register wiphy device\n");
2123
2124 priv->wiphy_registered = true;
2125
2126 ret = register_netdev(priv->dev);
2127 if (ret)
2128 pr_err("cannot register network device\n");
2129
2130 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2131
2132 lbs_cfg_set_regulatory_hint(priv);
2133
2134 return ret;
2135 }
2136
2137 void lbs_scan_deinit(struct lbs_private *priv)
2138 {
2139 cancel_delayed_work_sync(&priv->scan_work);
2140 }
2141
2142
2143 void lbs_cfg_free(struct lbs_private *priv)
2144 {
2145 struct wireless_dev *wdev = priv->wdev;
2146
2147 if (!wdev)
2148 return;
2149
2150 if (priv->wiphy_registered)
2151 wiphy_unregister(wdev->wiphy);
2152
2153 if (wdev->wiphy)
2154 wiphy_free(wdev->wiphy);
2155
2156 kfree(wdev);
2157 }
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