Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / drivers / net / wireless / 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 #include <linux/sched.h>
10 #include <linux/wait.h>
11 #include <linux/slab.h>
12 #include <linux/ieee80211.h>
13 #include <net/cfg80211.h>
14 #include <asm/unaligned.h>
15
16 #include "decl.h"
17 #include "cfg.h"
18 #include "cmd.h"
19
20
21 #define CHAN2G(_channel, _freq, _flags) {        \
22         .band             = IEEE80211_BAND_2GHZ, \
23         .center_freq      = (_freq),             \
24         .hw_value         = (_channel),          \
25         .flags            = (_flags),            \
26         .max_antenna_gain = 0,                   \
27         .max_power        = 30,                  \
28 }
29
30 static struct ieee80211_channel lbs_2ghz_channels[] = {
31         CHAN2G(1,  2412, 0),
32         CHAN2G(2,  2417, 0),
33         CHAN2G(3,  2422, 0),
34         CHAN2G(4,  2427, 0),
35         CHAN2G(5,  2432, 0),
36         CHAN2G(6,  2437, 0),
37         CHAN2G(7,  2442, 0),
38         CHAN2G(8,  2447, 0),
39         CHAN2G(9,  2452, 0),
40         CHAN2G(10, 2457, 0),
41         CHAN2G(11, 2462, 0),
42         CHAN2G(12, 2467, 0),
43         CHAN2G(13, 2472, 0),
44         CHAN2G(14, 2484, 0),
45 };
46
47 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
48         .bitrate  = (_rate),                    \
49         .hw_value = (_hw_value),                \
50         .flags    = (_flags),                   \
51 }
52
53
54 /* Table 6 in section 3.2.1.1 */
55 static struct ieee80211_rate lbs_rates[] = {
56         RATETAB_ENT(10,  0,  0),
57         RATETAB_ENT(20,  1,  0),
58         RATETAB_ENT(55,  2,  0),
59         RATETAB_ENT(110, 3,  0),
60         RATETAB_ENT(60,  9,  0),
61         RATETAB_ENT(90,  6,  0),
62         RATETAB_ENT(120, 7,  0),
63         RATETAB_ENT(180, 8,  0),
64         RATETAB_ENT(240, 9,  0),
65         RATETAB_ENT(360, 10, 0),
66         RATETAB_ENT(480, 11, 0),
67         RATETAB_ENT(540, 12, 0),
68 };
69
70 static struct ieee80211_supported_band lbs_band_2ghz = {
71         .channels = lbs_2ghz_channels,
72         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
73         .bitrates = lbs_rates,
74         .n_bitrates = ARRAY_SIZE(lbs_rates),
75 };
76
77
78 static const u32 cipher_suites[] = {
79         WLAN_CIPHER_SUITE_WEP40,
80         WLAN_CIPHER_SUITE_WEP104,
81         WLAN_CIPHER_SUITE_TKIP,
82         WLAN_CIPHER_SUITE_CCMP,
83 };
84
85 /* Time to stay on the channel */
86 #define LBS_DWELL_PASSIVE 100
87 #define LBS_DWELL_ACTIVE  40
88
89
90 /***************************************************************************
91  * Misc utility functions
92  *
93  * TLVs are Marvell specific. They are very similar to IEs, they have the
94  * same structure: type, length, data*. The only difference: for IEs, the
95  * type and length are u8, but for TLVs they're __le16.
96  */
97
98 /*
99  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
100  * in the firmware spec
101  */
102 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
103 {
104         int ret = -ENOTSUPP;
105
106         switch (auth_type) {
107         case NL80211_AUTHTYPE_OPEN_SYSTEM:
108         case NL80211_AUTHTYPE_SHARED_KEY:
109                 ret = auth_type;
110                 break;
111         case NL80211_AUTHTYPE_AUTOMATIC:
112                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
113                 break;
114         case NL80211_AUTHTYPE_NETWORK_EAP:
115                 ret = 0x80;
116                 break;
117         default:
118                 /* silence compiler */
119                 break;
120         }
121         return ret;
122 }
123
124
125 /* Various firmware commands need the list of supported rates, but with
126    the hight-bit set for basic rates */
127 static int lbs_add_rates(u8 *rates)
128 {
129         size_t i;
130
131         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
132                 u8 rate = lbs_rates[i].bitrate / 5;
133                 if (rate == 0x02 || rate == 0x04 ||
134                     rate == 0x0b || rate == 0x16)
135                         rate |= 0x80;
136                 rates[i] = rate;
137         }
138         return ARRAY_SIZE(lbs_rates);
139 }
140
141
142 /***************************************************************************
143  * TLV utility functions
144  *
145  * TLVs are Marvell specific. They are very similar to IEs, they have the
146  * same structure: type, length, data*. The only difference: for IEs, the
147  * type and length are u8, but for TLVs they're __le16.
148  */
149
150
151 /*
152  * Add ssid TLV
153  */
154 #define LBS_MAX_SSID_TLV_SIZE                   \
155         (sizeof(struct mrvl_ie_header)          \
156          + IEEE80211_MAX_SSID_LEN)
157
158 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
159 {
160         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
161
162         /*
163          * TLV-ID SSID  00 00
164          * length       06 00
165          * ssid         4d 4e 54 45 53 54
166          */
167         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
168         ssid_tlv->header.len = cpu_to_le16(ssid_len);
169         memcpy(ssid_tlv->ssid, ssid, ssid_len);
170         return sizeof(ssid_tlv->header) + ssid_len;
171 }
172
173
174 /*
175  * Add channel list TLV (section 8.4.2)
176  *
177  * Actual channel data comes from priv->wdev->wiphy->channels.
178  */
179 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
180         (sizeof(struct mrvl_ie_header)                                  \
181          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
182
183 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
184                                     int last_channel, int active_scan)
185 {
186         int chanscanparamsize = sizeof(struct chanscanparamset) *
187                 (last_channel - priv->scan_channel);
188
189         struct mrvl_ie_header *header = (void *) tlv;
190
191         /*
192          * TLV-ID CHANLIST  01 01
193          * length           0e 00
194          * channel          00 01 00 00 00 64 00
195          *   radio type     00
196          *   channel           01
197          *   scan type            00
198          *   min scan time           00 00
199          *   max scan time                 64 00
200          * channel 2        00 02 00 00 00 64 00
201          *
202          */
203
204         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
205         header->len  = cpu_to_le16(chanscanparamsize);
206         tlv += sizeof(struct mrvl_ie_header);
207
208         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
209                      last_channel); */
210         memset(tlv, 0, chanscanparamsize);
211
212         while (priv->scan_channel < last_channel) {
213                 struct chanscanparamset *param = (void *) tlv;
214
215                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
216                 param->channumber =
217                         priv->scan_req->channels[priv->scan_channel]->hw_value;
218                 if (active_scan) {
219                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
220                 } else {
221                         param->chanscanmode.passivescan = 1;
222                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
223                 }
224                 tlv += sizeof(struct chanscanparamset);
225                 priv->scan_channel++;
226         }
227         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
228 }
229
230
231 /*
232  * Add rates TLV
233  *
234  * The rates are in lbs_bg_rates[], but for the 802.11b
235  * rates the high bit is set. We add this TLV only because
236  * there's a firmware which otherwise doesn't report all
237  * APs in range.
238  */
239 #define LBS_MAX_RATES_TLV_SIZE                  \
240         (sizeof(struct mrvl_ie_header)          \
241          + (ARRAY_SIZE(lbs_rates)))
242
243 /* Adds a TLV with all rates the hardware supports */
244 static int lbs_add_supported_rates_tlv(u8 *tlv)
245 {
246         size_t i;
247         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
248
249         /*
250          * TLV-ID RATES  01 00
251          * length        0e 00
252          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
253          */
254         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
255         tlv += sizeof(rate_tlv->header);
256         i = lbs_add_rates(tlv);
257         tlv += i;
258         rate_tlv->header.len = cpu_to_le16(i);
259         return sizeof(rate_tlv->header) + i;
260 }
261
262 /* Add common rates from a TLV and return the new end of the TLV */
263 static u8 *
264 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
265 {
266         int hw, ap, ap_max = ie[1];
267         u8 hw_rate;
268
269         /* Advance past IE header */
270         ie += 2;
271
272         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
273
274         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
275                 hw_rate = lbs_rates[hw].bitrate / 5;
276                 for (ap = 0; ap < ap_max; ap++) {
277                         if (hw_rate == (ie[ap] & 0x7f)) {
278                                 *tlv++ = ie[ap];
279                                 *nrates = *nrates + 1;
280                         }
281                 }
282         }
283         return tlv;
284 }
285
286 /*
287  * Adds a TLV with all rates the hardware *and* BSS supports.
288  */
289 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
290 {
291         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
292         const u8 *rates_eid, *ext_rates_eid;
293         int n = 0;
294
295         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
296         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
297
298         /*
299          * 01 00                   TLV_TYPE_RATES
300          * 04 00                   len
301          * 82 84 8b 96             rates
302          */
303         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
304         tlv += sizeof(rate_tlv->header);
305
306         /* Add basic rates */
307         if (rates_eid) {
308                 tlv = add_ie_rates(tlv, rates_eid, &n);
309
310                 /* Add extended rates, if any */
311                 if (ext_rates_eid)
312                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
313         } else {
314                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
315                 /* Fallback: add basic 802.11b rates */
316                 *tlv++ = 0x82;
317                 *tlv++ = 0x84;
318                 *tlv++ = 0x8b;
319                 *tlv++ = 0x96;
320                 n = 4;
321         }
322
323         rate_tlv->header.len = cpu_to_le16(n);
324         return sizeof(rate_tlv->header) + n;
325 }
326
327
328 /*
329  * Add auth type TLV.
330  *
331  * This is only needed for newer firmware (V9 and up).
332  */
333 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
334         sizeof(struct mrvl_ie_auth_type)
335
336 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
337 {
338         struct mrvl_ie_auth_type *auth = (void *) tlv;
339
340         /*
341          * 1f 01  TLV_TYPE_AUTH_TYPE
342          * 01 00  len
343          * 01     auth type
344          */
345         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
346         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
347         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
348         return sizeof(*auth);
349 }
350
351
352 /*
353  * Add channel (phy ds) TLV
354  */
355 #define LBS_MAX_CHANNEL_TLV_SIZE \
356         sizeof(struct mrvl_ie_header)
357
358 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
359 {
360         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
361
362         /*
363          * 03 00  TLV_TYPE_PHY_DS
364          * 01 00  len
365          * 06     channel
366          */
367         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
368         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
369         ds->channel = channel;
370         return sizeof(*ds);
371 }
372
373
374 /*
375  * Add (empty) CF param TLV of the form:
376  */
377 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
378         sizeof(struct mrvl_ie_header)
379
380 static int lbs_add_cf_param_tlv(u8 *tlv)
381 {
382         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
383
384         /*
385          * 04 00  TLV_TYPE_CF
386          * 06 00  len
387          * 00     cfpcnt
388          * 00     cfpperiod
389          * 00 00  cfpmaxduration
390          * 00 00  cfpdurationremaining
391          */
392         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
393         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
394         return sizeof(*cf);
395 }
396
397 /*
398  * Add WPA TLV
399  */
400 #define LBS_MAX_WPA_TLV_SIZE                    \
401         (sizeof(struct mrvl_ie_header)          \
402          + 128 /* TODO: I guessed the size */)
403
404 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
405 {
406         size_t tlv_len;
407
408         /*
409          * We need just convert an IE to an TLV. IEs use u8 for the header,
410          *   u8      type
411          *   u8      len
412          *   u8[]    data
413          * but TLVs use __le16 instead:
414          *   __le16  type
415          *   __le16  len
416          *   u8[]    data
417          */
418         *tlv++ = *ie++;
419         *tlv++ = 0;
420         tlv_len = *tlv++ = *ie++;
421         *tlv++ = 0;
422         while (tlv_len--)
423                 *tlv++ = *ie++;
424         /* the TLV is two bytes larger than the IE */
425         return ie_len + 2;
426 }
427
428 /***************************************************************************
429  * Set Channel
430  */
431
432 static int lbs_cfg_set_channel(struct wiphy *wiphy,
433         struct net_device *netdev,
434         struct ieee80211_channel *channel,
435         enum nl80211_channel_type channel_type)
436 {
437         struct lbs_private *priv = wiphy_priv(wiphy);
438         int ret = -ENOTSUPP;
439
440         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
441                            channel->center_freq, channel_type);
442
443         if (channel_type != NL80211_CHAN_NO_HT)
444                 goto out;
445
446         ret = lbs_set_channel(priv, channel->hw_value);
447
448  out:
449         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
450         return ret;
451 }
452
453
454
455 /***************************************************************************
456  * Scanning
457  */
458
459 /*
460  * When scanning, the firmware doesn't send a nul packet with the power-safe
461  * bit to the AP. So we cannot stay away from our current channel too long,
462  * otherwise we loose data. So take a "nap" while scanning every other
463  * while.
464  */
465 #define LBS_SCAN_BEFORE_NAP 4
466
467
468 /*
469  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
470  * which isn't really an RSSI, as it becomes larger when moving away from
471  * the AP. Anyway, we need to convert that into mBm.
472  */
473 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
474         ((-(int)rssi + 3)*100)
475
476 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
477         struct cmd_header *resp)
478 {
479         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
480         int bsssize;
481         const u8 *pos;
482         const u8 *tsfdesc;
483         int tsfsize;
484         int i;
485         int ret = -EILSEQ;
486
487         lbs_deb_enter(LBS_DEB_CFG80211);
488
489         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
490
491         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
492                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
493
494         if (scanresp->nr_sets == 0) {
495                 ret = 0;
496                 goto done;
497         }
498
499         /*
500          * The general layout of the scan response is described in chapter
501          * 5.7.1. Basically we have a common part, then any number of BSS
502          * descriptor sections. Finally we have section with the same number
503          * of TSFs.
504          *
505          * cmd_ds_802_11_scan_rsp
506          *   cmd_header
507          *   pos_size
508          *   nr_sets
509          *   bssdesc 1
510          *     bssid
511          *     rssi
512          *     timestamp
513          *     intvl
514          *     capa
515          *     IEs
516          *   bssdesc 2
517          *   bssdesc n
518          *   MrvlIEtypes_TsfFimestamp_t
519          *     TSF for BSS 1
520          *     TSF for BSS 2
521          *     TSF for BSS n
522          */
523
524         pos = scanresp->bssdesc_and_tlvbuffer;
525
526         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
527                         scanresp->bssdescriptsize);
528
529         tsfdesc = pos + bsssize;
530         tsfsize = 4 + 8 * scanresp->nr_sets;
531         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
532
533         /* Validity check: we expect a Marvell-Local TLV */
534         i = get_unaligned_le16(tsfdesc);
535         tsfdesc += 2;
536         if (i != TLV_TYPE_TSFTIMESTAMP) {
537                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
538                 goto done;
539         }
540
541         /* Validity check: the TLV holds TSF values with 8 bytes each, so
542          * the size in the TLV must match the nr_sets value */
543         i = get_unaligned_le16(tsfdesc);
544         tsfdesc += 2;
545         if (i / 8 != scanresp->nr_sets) {
546                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
547                              "sets (expected %d got %d)\n", scanresp->nr_sets,
548                              i / 8);
549                 goto done;
550         }
551
552         for (i = 0; i < scanresp->nr_sets; i++) {
553                 const u8 *bssid;
554                 const u8 *ie;
555                 int left;
556                 int ielen;
557                 int rssi;
558                 u16 intvl;
559                 u16 capa;
560                 int chan_no = -1;
561                 const u8 *ssid = NULL;
562                 u8 ssid_len = 0;
563                 DECLARE_SSID_BUF(ssid_buf);
564
565                 int len = get_unaligned_le16(pos);
566                 pos += 2;
567
568                 /* BSSID */
569                 bssid = pos;
570                 pos += ETH_ALEN;
571                 /* RSSI */
572                 rssi = *pos++;
573                 /* Packet time stamp */
574                 pos += 8;
575                 /* Beacon interval */
576                 intvl = get_unaligned_le16(pos);
577                 pos += 2;
578                 /* Capabilities */
579                 capa = get_unaligned_le16(pos);
580                 pos += 2;
581
582                 /* To find out the channel, we must parse the IEs */
583                 ie = pos;
584                 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
585                    interval, capabilities */
586                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
587                 while (left >= 2) {
588                         u8 id, elen;
589                         id = *pos++;
590                         elen = *pos++;
591                         left -= 2;
592                         if (elen > left || elen == 0) {
593                                 lbs_deb_scan("scan response: invalid IE fmt\n");
594                                 goto done;
595                         }
596
597                         if (id == WLAN_EID_DS_PARAMS)
598                                 chan_no = *pos;
599                         if (id == WLAN_EID_SSID) {
600                                 ssid = pos;
601                                 ssid_len = elen;
602                         }
603                         left -= elen;
604                         pos += elen;
605                 }
606
607                 /* No channel, no luck */
608                 if (chan_no != -1) {
609                         struct wiphy *wiphy = priv->wdev->wiphy;
610                         int freq = ieee80211_channel_to_frequency(chan_no);
611                         struct ieee80211_channel *channel =
612                                 ieee80211_get_channel(wiphy, freq);
613
614                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
615                                      "%d dBm\n",
616                                      bssid, capa, chan_no,
617                                      print_ssid(ssid_buf, ssid, ssid_len),
618                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
619
620                         if (channel ||
621                             !(channel->flags & IEEE80211_CHAN_DISABLED))
622                                 cfg80211_inform_bss(wiphy, channel,
623                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
624                                         capa, intvl, ie, ielen,
625                                         LBS_SCAN_RSSI_TO_MBM(rssi),
626                                         GFP_KERNEL);
627                 } else
628                         lbs_deb_scan("scan response: missing BSS channel IE\n");
629
630                 tsfdesc += 8;
631         }
632         ret = 0;
633
634  done:
635         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
636         return ret;
637 }
638
639
640 /*
641  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
642  * TLV and a rates TLV. Determine the maximum size of them:
643  */
644 #define LBS_SCAN_MAX_CMD_SIZE                   \
645         (sizeof(struct cmd_ds_802_11_scan)      \
646          + LBS_MAX_SSID_TLV_SIZE                \
647          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
648          + LBS_MAX_RATES_TLV_SIZE)
649
650 /*
651  * Assumes priv->scan_req is initialized and valid
652  * Assumes priv->scan_channel is initialized
653  */
654 static void lbs_scan_worker(struct work_struct *work)
655 {
656         struct lbs_private *priv =
657                 container_of(work, struct lbs_private, scan_work.work);
658         struct cmd_ds_802_11_scan *scan_cmd;
659         u8 *tlv; /* pointer into our current, growing TLV storage area */
660         int last_channel;
661         int running, carrier;
662
663         lbs_deb_enter(LBS_DEB_SCAN);
664
665         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
666         if (scan_cmd == NULL)
667                 goto out_no_scan_cmd;
668
669         /* prepare fixed part of scan command */
670         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
671
672         /* stop network while we're away from our main channel */
673         running = !netif_queue_stopped(priv->dev);
674         carrier = netif_carrier_ok(priv->dev);
675         if (running)
676                 netif_stop_queue(priv->dev);
677         if (carrier)
678                 netif_carrier_off(priv->dev);
679
680         /* prepare fixed part of scan command */
681         tlv = scan_cmd->tlvbuffer;
682
683         /* add SSID TLV */
684         if (priv->scan_req->n_ssids)
685                 tlv += lbs_add_ssid_tlv(tlv,
686                                         priv->scan_req->ssids[0].ssid,
687                                         priv->scan_req->ssids[0].ssid_len);
688
689         /* add channel TLVs */
690         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
691         if (last_channel > priv->scan_req->n_channels)
692                 last_channel = priv->scan_req->n_channels;
693         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
694                 priv->scan_req->n_ssids);
695
696         /* add rates TLV */
697         tlv += lbs_add_supported_rates_tlv(tlv);
698
699         if (priv->scan_channel < priv->scan_req->n_channels) {
700                 cancel_delayed_work(&priv->scan_work);
701                 if (!priv->stopping)
702                         queue_delayed_work(priv->work_thread, &priv->scan_work,
703                                 msecs_to_jiffies(300));
704         }
705
706         /* This is the final data we are about to send */
707         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
708         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
709                     sizeof(*scan_cmd));
710         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
711                     tlv - scan_cmd->tlvbuffer);
712
713         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
714                 le16_to_cpu(scan_cmd->hdr.size),
715                 lbs_ret_scan, 0);
716
717         if (priv->scan_channel >= priv->scan_req->n_channels) {
718                 /* Mark scan done */
719                 if (priv->internal_scan)
720                         kfree(priv->scan_req);
721                 else
722                         cfg80211_scan_done(priv->scan_req, false);
723
724                 priv->scan_req = NULL;
725                 priv->last_scan = jiffies;
726         }
727
728         /* Restart network */
729         if (carrier)
730                 netif_carrier_on(priv->dev);
731         if (running && !priv->tx_pending_len)
732                 netif_wake_queue(priv->dev);
733
734         kfree(scan_cmd);
735
736         /* Wake up anything waiting on scan completion */
737         if (priv->scan_req == NULL) {
738                 lbs_deb_scan("scan: waking up waiters\n");
739                 wake_up_all(&priv->scan_q);
740         }
741
742  out_no_scan_cmd:
743         lbs_deb_leave(LBS_DEB_SCAN);
744 }
745
746 static void _internal_start_scan(struct lbs_private *priv, bool internal,
747         struct cfg80211_scan_request *request)
748 {
749         lbs_deb_enter(LBS_DEB_CFG80211);
750
751         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
752                 request->n_ssids, request->n_channels, request->ie_len);
753
754         priv->scan_channel = 0;
755         queue_delayed_work(priv->work_thread, &priv->scan_work,
756                 msecs_to_jiffies(50));
757
758         priv->scan_req = request;
759         priv->internal_scan = internal;
760
761         lbs_deb_leave(LBS_DEB_CFG80211);
762 }
763
764 static int lbs_cfg_scan(struct wiphy *wiphy,
765         struct net_device *dev,
766         struct cfg80211_scan_request *request)
767 {
768         struct lbs_private *priv = wiphy_priv(wiphy);
769         int ret = 0;
770
771         lbs_deb_enter(LBS_DEB_CFG80211);
772
773         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
774                 /* old scan request not yet processed */
775                 ret = -EAGAIN;
776                 goto out;
777         }
778
779         _internal_start_scan(priv, false, request);
780
781         if (priv->surpriseremoved)
782                 ret = -EIO;
783
784  out:
785         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
786         return ret;
787 }
788
789
790
791
792 /***************************************************************************
793  * Events
794  */
795
796 void lbs_send_disconnect_notification(struct lbs_private *priv)
797 {
798         lbs_deb_enter(LBS_DEB_CFG80211);
799
800         cfg80211_disconnected(priv->dev,
801                 0,
802                 NULL, 0,
803                 GFP_KERNEL);
804
805         lbs_deb_leave(LBS_DEB_CFG80211);
806 }
807
808 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
809 {
810         lbs_deb_enter(LBS_DEB_CFG80211);
811
812         cfg80211_michael_mic_failure(priv->dev,
813                 priv->assoc_bss,
814                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
815                         NL80211_KEYTYPE_GROUP :
816                         NL80211_KEYTYPE_PAIRWISE,
817                 -1,
818                 NULL,
819                 GFP_KERNEL);
820
821         lbs_deb_leave(LBS_DEB_CFG80211);
822 }
823
824
825
826
827 /***************************************************************************
828  * Connect/disconnect
829  */
830
831
832 /*
833  * This removes all WEP keys
834  */
835 static int lbs_remove_wep_keys(struct lbs_private *priv)
836 {
837         struct cmd_ds_802_11_set_wep cmd;
838         int ret;
839
840         lbs_deb_enter(LBS_DEB_CFG80211);
841
842         memset(&cmd, 0, sizeof(cmd));
843         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
844         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
845         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
846
847         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
848
849         lbs_deb_leave(LBS_DEB_CFG80211);
850         return ret;
851 }
852
853 /*
854  * Set WEP keys
855  */
856 static int lbs_set_wep_keys(struct lbs_private *priv)
857 {
858         struct cmd_ds_802_11_set_wep cmd;
859         int i;
860         int ret;
861
862         lbs_deb_enter(LBS_DEB_CFG80211);
863
864         /*
865          * command         13 00
866          * size            50 00
867          * sequence        xx xx
868          * result          00 00
869          * action          02 00     ACT_ADD
870          * transmit key    00 00
871          * type for key 1  01        WEP40
872          * type for key 2  00
873          * type for key 3  00
874          * type for key 4  00
875          * key 1           39 39 39 39 39 00 00 00
876          *                 00 00 00 00 00 00 00 00
877          * key 2           00 00 00 00 00 00 00 00
878          *                 00 00 00 00 00 00 00 00
879          * key 3           00 00 00 00 00 00 00 00
880          *                 00 00 00 00 00 00 00 00
881          * key 4           00 00 00 00 00 00 00 00
882          */
883         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
884             priv->wep_key_len[2] || priv->wep_key_len[3]) {
885                 /* Only set wep keys if we have at least one of them */
886                 memset(&cmd, 0, sizeof(cmd));
887                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
888                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
889                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
890
891                 for (i = 0; i < 4; i++) {
892                         switch (priv->wep_key_len[i]) {
893                         case WLAN_KEY_LEN_WEP40:
894                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
895                                 break;
896                         case WLAN_KEY_LEN_WEP104:
897                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
898                                 break;
899                         default:
900                                 cmd.keytype[i] = 0;
901                                 break;
902                         }
903                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
904                                priv->wep_key_len[i]);
905                 }
906
907                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
908         } else {
909                 /* Otherwise remove all wep keys */
910                 ret = lbs_remove_wep_keys(priv);
911         }
912
913         lbs_deb_leave(LBS_DEB_CFG80211);
914         return ret;
915 }
916
917
918 /*
919  * Enable/Disable RSN status
920  */
921 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
922 {
923         struct cmd_ds_802_11_enable_rsn cmd;
924         int ret;
925
926         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
927
928         /*
929          * cmd       2f 00
930          * size      0c 00
931          * sequence  xx xx
932          * result    00 00
933          * action    01 00    ACT_SET
934          * enable    01 00
935          */
936         memset(&cmd, 0, sizeof(cmd));
937         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
938         cmd.action = cpu_to_le16(CMD_ACT_SET);
939         cmd.enable = cpu_to_le16(enable);
940
941         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
942
943         lbs_deb_leave(LBS_DEB_CFG80211);
944         return ret;
945 }
946
947
948 /*
949  * Set WPA/WPA key material
950  */
951
952 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
953  * get rid of WEXT, this should go into host.h */
954
955 struct cmd_key_material {
956         struct cmd_header hdr;
957
958         __le16 action;
959         struct MrvlIEtype_keyParamSet param;
960 } __packed;
961
962 static int lbs_set_key_material(struct lbs_private *priv,
963                                 int key_type,
964                                 int key_info,
965                                 u8 *key, u16 key_len)
966 {
967         struct cmd_key_material cmd;
968         int ret;
969
970         lbs_deb_enter(LBS_DEB_CFG80211);
971
972         /*
973          * Example for WPA (TKIP):
974          *
975          * cmd       5e 00
976          * size      34 00
977          * sequence  xx xx
978          * result    00 00
979          * action    01 00
980          * TLV type  00 01    key param
981          * length    00 26
982          * key type  01 00    TKIP
983          * key info  06 00    UNICAST | ENABLED
984          * key len   20 00
985          * key       32 bytes
986          */
987         memset(&cmd, 0, sizeof(cmd));
988         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
989         cmd.action = cpu_to_le16(CMD_ACT_SET);
990         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
991         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
992         cmd.param.keytypeid = cpu_to_le16(key_type);
993         cmd.param.keyinfo = cpu_to_le16(key_info);
994         cmd.param.keylen = cpu_to_le16(key_len);
995         if (key && key_len)
996                 memcpy(cmd.param.key, key, key_len);
997
998         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
999
1000         lbs_deb_leave(LBS_DEB_CFG80211);
1001         return ret;
1002 }
1003
1004
1005 /*
1006  * Sets the auth type (open, shared, etc) in the firmware. That
1007  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1008  * command doesn't send an authentication frame at all, it just
1009  * stores the auth_type.
1010  */
1011 static int lbs_set_authtype(struct lbs_private *priv,
1012                             struct cfg80211_connect_params *sme)
1013 {
1014         struct cmd_ds_802_11_authenticate cmd;
1015         int ret;
1016
1017         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1018
1019         /*
1020          * cmd        11 00
1021          * size       19 00
1022          * sequence   xx xx
1023          * result     00 00
1024          * BSS id     00 13 19 80 da 30
1025          * auth type  00
1026          * reserved   00 00 00 00 00 00 00 00 00 00
1027          */
1028         memset(&cmd, 0, sizeof(cmd));
1029         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1030         if (sme->bssid)
1031                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1032         /* convert auth_type */
1033         ret = lbs_auth_to_authtype(sme->auth_type);
1034         if (ret < 0)
1035                 goto done;
1036
1037         cmd.authtype = ret;
1038         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1039
1040  done:
1041         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
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 = &(cmd->iebuf[0]);
1070         u8 *tmp;
1071
1072         lbs_deb_enter(LBS_DEB_CFG80211);
1073
1074         if (!cmd) {
1075                 ret = -ENOMEM;
1076                 goto done;
1077         }
1078
1079         /*
1080          * cmd              50 00
1081          * length           34 00
1082          * sequence         xx xx
1083          * result           00 00
1084          * BSS id           00 13 19 80 da 30
1085          * capabilities     11 00
1086          * listen interval  0a 00
1087          * beacon interval  00 00
1088          * DTIM period      00
1089          * TLVs             xx   (up to 512 bytes)
1090          */
1091         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1092
1093         /* Fill in static fields */
1094         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1095         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1096         cmd->capability = cpu_to_le16(bss->capability);
1097
1098         /* add SSID TLV */
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
1105         /* add DS param TLV */
1106         if (bss->channel)
1107                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1108         else
1109                 lbs_deb_assoc("no channel\n");
1110
1111         /* add (empty) CF param TLV */
1112         pos += lbs_add_cf_param_tlv(pos);
1113
1114         /* add rates TLV */
1115         tmp = pos + 4; /* skip Marvell IE header */
1116         pos += lbs_add_common_rates_tlv(pos, bss);
1117         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1118
1119         /* add auth type TLV */
1120         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1121                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1122
1123         /* add WPA/WPA2 TLV */
1124         if (sme->ie && sme->ie_len)
1125                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1126
1127         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1128                 (u16)(pos - (u8 *) &cmd->iebuf);
1129         cmd->hdr.size = cpu_to_le16(len);
1130
1131         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1132                         le16_to_cpu(cmd->hdr.size));
1133
1134         /* store for later use */
1135         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1136
1137         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1138         if (ret)
1139                 goto done;
1140
1141         /* generate connect message to cfg80211 */
1142
1143         resp = (void *) cmd; /* recast for easier field access */
1144         status = le16_to_cpu(resp->statuscode);
1145
1146         /* Older FW versions map the IEEE 802.11 Status Code in the association
1147          * response to the following values returned in resp->statuscode:
1148          *
1149          *    IEEE Status Code                Marvell Status Code
1150          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1151          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1152          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1153          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1154          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1155          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1156          *
1157          * Other response codes:
1158          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1159          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1160          *                                    association response from the AP)
1161          */
1162         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1163                 switch (status) {
1164                 case 0:
1165                         break;
1166                 case 1:
1167                         lbs_deb_assoc("invalid association parameters\n");
1168                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1169                         break;
1170                 case 2:
1171                         lbs_deb_assoc("timer expired while waiting for AP\n");
1172                         status = WLAN_STATUS_AUTH_TIMEOUT;
1173                         break;
1174                 case 3:
1175                         lbs_deb_assoc("association refused by AP\n");
1176                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1177                         break;
1178                 case 4:
1179                         lbs_deb_assoc("authentication refused by AP\n");
1180                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1181                         break;
1182                 default:
1183                         lbs_deb_assoc("association failure %d\n", status);
1184                         /* v5 OLPC firmware does return the AP status code if
1185                          * it's not one of the values above.  Let that through.
1186                          */
1187                         break;
1188                 }
1189         }
1190
1191         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1192                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1193                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1194
1195         resp_ie_len = le16_to_cpu(resp->hdr.size)
1196                 - sizeof(resp->hdr)
1197                 - 6;
1198         cfg80211_connect_result(priv->dev,
1199                                 priv->assoc_bss,
1200                                 sme->ie, sme->ie_len,
1201                                 resp->iebuf, resp_ie_len,
1202                                 status,
1203                                 GFP_KERNEL);
1204
1205         if (status == 0) {
1206                 /* TODO: get rid of priv->connect_status */
1207                 priv->connect_status = LBS_CONNECTED;
1208                 netif_carrier_on(priv->dev);
1209                 if (!priv->tx_pending_len)
1210                         netif_tx_wake_all_queues(priv->dev);
1211         }
1212
1213 done:
1214         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1215         return ret;
1216 }
1217
1218 static struct cfg80211_scan_request *
1219 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1220 {
1221         struct cfg80211_scan_request *creq = NULL;
1222         int i, n_channels = 0;
1223         enum ieee80211_band band;
1224
1225         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1226                 if (wiphy->bands[band])
1227                         n_channels += wiphy->bands[band]->n_channels;
1228         }
1229
1230         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1231                        n_channels * sizeof(void *),
1232                        GFP_ATOMIC);
1233         if (!creq)
1234                 return NULL;
1235
1236         /* SSIDs come after channels */
1237         creq->ssids = (void *)&creq->channels[n_channels];
1238         creq->n_channels = n_channels;
1239         creq->n_ssids = 1;
1240
1241         /* Scan all available channels */
1242         i = 0;
1243         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1244                 int j;
1245
1246                 if (!wiphy->bands[band])
1247                         continue;
1248
1249                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1250                         /* ignore disabled channels */
1251                         if (wiphy->bands[band]->channels[j].flags &
1252                                                 IEEE80211_CHAN_DISABLED)
1253                                 continue;
1254
1255                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1256                         i++;
1257                 }
1258         }
1259         if (i) {
1260                 /* Set real number of channels specified in creq->channels[] */
1261                 creq->n_channels = i;
1262
1263                 /* Scan for the SSID we're going to connect to */
1264                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1265                 creq->ssids[0].ssid_len = sme->ssid_len;
1266         } else {
1267                 /* No channels found... */
1268                 kfree(creq);
1269                 creq = NULL;
1270         }
1271
1272         return creq;
1273 }
1274
1275 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1276                            struct cfg80211_connect_params *sme)
1277 {
1278         struct lbs_private *priv = wiphy_priv(wiphy);
1279         struct cfg80211_bss *bss = NULL;
1280         int ret = 0;
1281         u8 preamble = RADIO_PREAMBLE_SHORT;
1282
1283         lbs_deb_enter(LBS_DEB_CFG80211);
1284
1285         if (!sme->bssid) {
1286                 /* Run a scan if one isn't in-progress already and if the last
1287                  * scan was done more than 2 seconds ago.
1288                  */
1289                 if (priv->scan_req == NULL &&
1290                     time_after(jiffies, priv->last_scan + (2 * HZ))) {
1291                         struct cfg80211_scan_request *creq;
1292
1293                         creq = _new_connect_scan_req(wiphy, sme);
1294                         if (!creq) {
1295                                 ret = -EINVAL;
1296                                 goto done;
1297                         }
1298
1299                         lbs_deb_assoc("assoc: scanning for compatible AP\n");
1300                         _internal_start_scan(priv, true, creq);
1301                 }
1302
1303                 /* Wait for any in-progress scan to complete */
1304                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1305                 wait_event_interruptible_timeout(priv->scan_q,
1306                                                  (priv->scan_req == NULL),
1307                                                  (15 * HZ));
1308                 lbs_deb_assoc("assoc: scanning competed\n");
1309         }
1310
1311         /* Find the BSS we want using available scan results */
1312         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1313                 sme->ssid, sme->ssid_len,
1314                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1315         if (!bss) {
1316                 lbs_pr_err("assoc: bss %pM not in scan results\n",
1317                            sme->bssid);
1318                 ret = -ENOENT;
1319                 goto done;
1320         }
1321         lbs_deb_assoc("trying %pM\n", bss->bssid);
1322         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1323                       sme->crypto.cipher_group,
1324                       sme->key_idx, sme->key_len);
1325
1326         /* As this is a new connection, clear locally stored WEP keys */
1327         priv->wep_tx_key = 0;
1328         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1329         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1330
1331         /* set/remove WEP keys */
1332         switch (sme->crypto.cipher_group) {
1333         case WLAN_CIPHER_SUITE_WEP40:
1334         case WLAN_CIPHER_SUITE_WEP104:
1335                 /* Store provided WEP keys in priv-> */
1336                 priv->wep_tx_key = sme->key_idx;
1337                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1338                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1339                 /* Set WEP keys and WEP mode */
1340                 lbs_set_wep_keys(priv);
1341                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1342                 lbs_set_mac_control(priv);
1343                 /* No RSN mode for WEP */
1344                 lbs_enable_rsn(priv, 0);
1345                 break;
1346         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1347                 /*
1348                  * If we don't have no WEP, no WPA and no WPA2,
1349                  * we remove all keys like in the WPA/WPA2 setup,
1350                  * we just don't set RSN.
1351                  *
1352                  * Therefore: fall-throught
1353                  */
1354         case WLAN_CIPHER_SUITE_TKIP:
1355         case WLAN_CIPHER_SUITE_CCMP:
1356                 /* Remove WEP keys and WEP mode */
1357                 lbs_remove_wep_keys(priv);
1358                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1359                 lbs_set_mac_control(priv);
1360
1361                 /* clear the WPA/WPA2 keys */
1362                 lbs_set_key_material(priv,
1363                         KEY_TYPE_ID_WEP, /* doesn't matter */
1364                         KEY_INFO_WPA_UNICAST,
1365                         NULL, 0);
1366                 lbs_set_key_material(priv,
1367                         KEY_TYPE_ID_WEP, /* doesn't matter */
1368                         KEY_INFO_WPA_MCAST,
1369                         NULL, 0);
1370                 /* RSN mode for WPA/WPA2 */
1371                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1372                 break;
1373         default:
1374                 lbs_pr_err("unsupported cipher group 0x%x\n",
1375                            sme->crypto.cipher_group);
1376                 ret = -ENOTSUPP;
1377                 goto done;
1378         }
1379
1380         lbs_set_authtype(priv, sme);
1381         lbs_set_radio(priv, preamble, 1);
1382
1383         /* Do the actual association */
1384         ret = lbs_associate(priv, bss, sme);
1385
1386  done:
1387         if (bss)
1388                 cfg80211_put_bss(bss);
1389         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1390         return ret;
1391 }
1392
1393 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1394         u16 reason_code)
1395 {
1396         struct lbs_private *priv = wiphy_priv(wiphy);
1397         struct cmd_ds_802_11_deauthenticate cmd;
1398
1399         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1400
1401         /* store for lbs_cfg_ret_disconnect() */
1402         priv->disassoc_reason = reason_code;
1403
1404         memset(&cmd, 0, sizeof(cmd));
1405         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1406         /* Mildly ugly to use a locally store my own BSSID ... */
1407         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1408         cmd.reasoncode = cpu_to_le16(reason_code);
1409
1410         if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1411                 return -EFAULT;
1412
1413         cfg80211_disconnected(priv->dev,
1414                         priv->disassoc_reason,
1415                         NULL, 0,
1416                         GFP_KERNEL);
1417         priv->connect_status = LBS_DISCONNECTED;
1418
1419         return 0;
1420 }
1421
1422
1423 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1424                                    struct net_device *netdev,
1425                                    u8 key_index)
1426 {
1427         struct lbs_private *priv = wiphy_priv(wiphy);
1428
1429         lbs_deb_enter(LBS_DEB_CFG80211);
1430
1431         if (key_index != priv->wep_tx_key) {
1432                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1433                 priv->wep_tx_key = key_index;
1434                 lbs_set_wep_keys(priv);
1435         }
1436
1437         return 0;
1438 }
1439
1440
1441 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1442                            u8 idx, bool pairwise, const u8 *mac_addr,
1443                            struct key_params *params)
1444 {
1445         struct lbs_private *priv = wiphy_priv(wiphy);
1446         u16 key_info;
1447         u16 key_type;
1448         int ret = 0;
1449
1450         lbs_deb_enter(LBS_DEB_CFG80211);
1451
1452         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1453                       params->cipher, mac_addr);
1454         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1455                       idx, params->key_len);
1456         if (params->key_len)
1457                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1458                             params->key, params->key_len);
1459
1460         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1461         if (params->seq_len)
1462                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1463                             params->seq, params->seq_len);
1464
1465         switch (params->cipher) {
1466         case WLAN_CIPHER_SUITE_WEP40:
1467         case WLAN_CIPHER_SUITE_WEP104:
1468                 /* actually compare if something has changed ... */
1469                 if ((priv->wep_key_len[idx] != params->key_len) ||
1470                         memcmp(priv->wep_key[idx],
1471                                params->key, params->key_len) != 0) {
1472                         priv->wep_key_len[idx] = params->key_len;
1473                         memcpy(priv->wep_key[idx],
1474                                params->key, params->key_len);
1475                         lbs_set_wep_keys(priv);
1476                 }
1477                 break;
1478         case WLAN_CIPHER_SUITE_TKIP:
1479         case WLAN_CIPHER_SUITE_CCMP:
1480                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1481                                                    ? KEY_INFO_WPA_UNICAST
1482                                                    : KEY_INFO_WPA_MCAST);
1483                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1484                         ? KEY_TYPE_ID_TKIP
1485                         : KEY_TYPE_ID_AES;
1486                 lbs_set_key_material(priv,
1487                                      key_type,
1488                                      key_info,
1489                                      params->key, params->key_len);
1490                 break;
1491         default:
1492                 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1493                 ret = -ENOTSUPP;
1494                 break;
1495         }
1496
1497         return ret;
1498 }
1499
1500
1501 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1502                            u8 key_index, bool pairwise, const u8 *mac_addr)
1503 {
1504
1505         lbs_deb_enter(LBS_DEB_CFG80211);
1506
1507         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1508                       key_index, mac_addr);
1509
1510 #ifdef TODO
1511         struct lbs_private *priv = wiphy_priv(wiphy);
1512         /*
1513          * I think can keep this a NO-OP, because:
1514
1515          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1516          * - neither "iw" nor "wpa_supplicant" won't call this during
1517          *   an ongoing connection
1518          * - TODO: but I have to check if this is still true when
1519          *   I set the AP to periodic re-keying
1520          * - we've not kzallec() something when we've added a key at
1521          *   lbs_cfg_connect() or lbs_cfg_add_key().
1522          *
1523          * This causes lbs_cfg_del_key() only called at disconnect time,
1524          * where we'd just waste time deleting a key that is not going
1525          * to be used anyway.
1526          */
1527         if (key_index < 3 && priv->wep_key_len[key_index]) {
1528                 priv->wep_key_len[key_index] = 0;
1529                 lbs_set_wep_keys(priv);
1530         }
1531 #endif
1532
1533         return 0;
1534 }
1535
1536
1537 /***************************************************************************
1538  * Get station
1539  */
1540
1541 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1542                               u8 *mac, struct station_info *sinfo)
1543 {
1544         struct lbs_private *priv = wiphy_priv(wiphy);
1545         s8 signal, noise;
1546         int ret;
1547         size_t i;
1548
1549         lbs_deb_enter(LBS_DEB_CFG80211);
1550
1551         sinfo->filled |= STATION_INFO_TX_BYTES |
1552                          STATION_INFO_TX_PACKETS |
1553                          STATION_INFO_RX_BYTES |
1554                          STATION_INFO_RX_PACKETS;
1555         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1556         sinfo->tx_packets = priv->dev->stats.tx_packets;
1557         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1558         sinfo->rx_packets = priv->dev->stats.rx_packets;
1559
1560         /* Get current RSSI */
1561         ret = lbs_get_rssi(priv, &signal, &noise);
1562         if (ret == 0) {
1563                 sinfo->signal = signal;
1564                 sinfo->filled |= STATION_INFO_SIGNAL;
1565         }
1566
1567         /* Convert priv->cur_rate from hw_value to NL80211 value */
1568         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1569                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1570                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1571                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1572                         break;
1573                 }
1574         }
1575
1576         return 0;
1577 }
1578
1579
1580
1581
1582 /***************************************************************************
1583  * "Site survey", here just current channel and noise level
1584  */
1585
1586 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1587         int idx, struct survey_info *survey)
1588 {
1589         struct lbs_private *priv = wiphy_priv(wiphy);
1590         s8 signal, noise;
1591         int ret;
1592
1593         if (idx != 0)
1594                 ret = -ENOENT;
1595
1596         lbs_deb_enter(LBS_DEB_CFG80211);
1597
1598         survey->channel = ieee80211_get_channel(wiphy,
1599                 ieee80211_channel_to_frequency(priv->channel));
1600
1601         ret = lbs_get_rssi(priv, &signal, &noise);
1602         if (ret == 0) {
1603                 survey->filled = SURVEY_INFO_NOISE_DBM;
1604                 survey->noise = noise;
1605         }
1606
1607         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1608         return ret;
1609 }
1610
1611
1612
1613
1614 /***************************************************************************
1615  * Change interface
1616  */
1617
1618 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1619         enum nl80211_iftype type, u32 *flags,
1620                struct vif_params *params)
1621 {
1622         struct lbs_private *priv = wiphy_priv(wiphy);
1623         int ret = 0;
1624
1625         lbs_deb_enter(LBS_DEB_CFG80211);
1626
1627         switch (type) {
1628         case NL80211_IFTYPE_MONITOR:
1629                 ret = lbs_set_monitor_mode(priv, 1);
1630                 break;
1631         case NL80211_IFTYPE_STATION:
1632                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1633                         ret = lbs_set_monitor_mode(priv, 0);
1634                 if (!ret)
1635                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1636                 break;
1637         case NL80211_IFTYPE_ADHOC:
1638                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1639                         ret = lbs_set_monitor_mode(priv, 0);
1640                 if (!ret)
1641                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1642                 break;
1643         default:
1644                 ret = -ENOTSUPP;
1645         }
1646
1647         if (!ret)
1648                 priv->wdev->iftype = type;
1649
1650         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1651         return ret;
1652 }
1653
1654
1655
1656 /***************************************************************************
1657  * IBSS (Ad-Hoc)
1658  */
1659
1660 /* The firmware needs the following bits masked out of the beacon-derived
1661  * capability field when associating/joining to a BSS:
1662  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1663  */
1664 #define CAPINFO_MASK (~(0xda00))
1665
1666
1667 static void lbs_join_post(struct lbs_private *priv,
1668                           struct cfg80211_ibss_params *params,
1669                           u8 *bssid, u16 capability)
1670 {
1671         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1672                    2 + 4 +                      /* basic rates */
1673                    2 + 1 +                      /* DS parameter */
1674                    2 + 2 +                      /* atim */
1675                    2 + 8];                      /* extended rates */
1676         u8 *fake = fake_ie;
1677
1678         lbs_deb_enter(LBS_DEB_CFG80211);
1679
1680         /*
1681          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1682          * the real IE from the firmware. So we fabricate a fake IE based on
1683          * what the firmware actually sends (sniffed with wireshark).
1684          */
1685         /* Fake SSID IE */
1686         *fake++ = WLAN_EID_SSID;
1687         *fake++ = params->ssid_len;
1688         memcpy(fake, params->ssid, params->ssid_len);
1689         fake += params->ssid_len;
1690         /* Fake supported basic rates IE */
1691         *fake++ = WLAN_EID_SUPP_RATES;
1692         *fake++ = 4;
1693         *fake++ = 0x82;
1694         *fake++ = 0x84;
1695         *fake++ = 0x8b;
1696         *fake++ = 0x96;
1697         /* Fake DS channel IE */
1698         *fake++ = WLAN_EID_DS_PARAMS;
1699         *fake++ = 1;
1700         *fake++ = params->channel->hw_value;
1701         /* Fake IBSS params IE */
1702         *fake++ = WLAN_EID_IBSS_PARAMS;
1703         *fake++ = 2;
1704         *fake++ = 0; /* ATIM=0 */
1705         *fake++ = 0;
1706         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1707          * but I don't know how this could be checked */
1708         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1709         *fake++ = 8;
1710         *fake++ = 0x0c;
1711         *fake++ = 0x12;
1712         *fake++ = 0x18;
1713         *fake++ = 0x24;
1714         *fake++ = 0x30;
1715         *fake++ = 0x48;
1716         *fake++ = 0x60;
1717         *fake++ = 0x6c;
1718         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1719
1720         cfg80211_inform_bss(priv->wdev->wiphy,
1721                             params->channel,
1722                             bssid,
1723                             0,
1724                             capability,
1725                             params->beacon_interval,
1726                             fake_ie, fake - fake_ie,
1727                             0, GFP_KERNEL);
1728
1729         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1730         priv->wdev->ssid_len = params->ssid_len;
1731
1732         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1733
1734         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1735         priv->connect_status = LBS_CONNECTED;
1736         netif_carrier_on(priv->dev);
1737         if (!priv->tx_pending_len)
1738                 netif_wake_queue(priv->dev);
1739
1740         lbs_deb_leave(LBS_DEB_CFG80211);
1741 }
1742
1743 static int lbs_ibss_join_existing(struct lbs_private *priv,
1744         struct cfg80211_ibss_params *params,
1745         struct cfg80211_bss *bss)
1746 {
1747         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1748         struct cmd_ds_802_11_ad_hoc_join cmd;
1749         u8 preamble = RADIO_PREAMBLE_SHORT;
1750         int ret = 0;
1751
1752         lbs_deb_enter(LBS_DEB_CFG80211);
1753
1754         /* TODO: set preamble based on scan result */
1755         ret = lbs_set_radio(priv, preamble, 1);
1756         if (ret)
1757                 goto out;
1758
1759         /*
1760          * Example CMD_802_11_AD_HOC_JOIN command:
1761          *
1762          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1763          * size            65 00
1764          * sequence        xx xx
1765          * result          00 00
1766          * bssid           02 27 27 97 2f 96
1767          * ssid            49 42 53 53 00 00 00 00
1768          *                 00 00 00 00 00 00 00 00
1769          *                 00 00 00 00 00 00 00 00
1770          *                 00 00 00 00 00 00 00 00
1771          * type            02            CMD_BSS_TYPE_IBSS
1772          * beacon period   64 00
1773          * dtim period     00
1774          * timestamp       00 00 00 00 00 00 00 00
1775          * localtime       00 00 00 00 00 00 00 00
1776          * IE DS           03
1777          * IE DS len       01
1778          * IE DS channel   01
1779          * reserveed       00 00 00 00
1780          * IE IBSS         06
1781          * IE IBSS len     02
1782          * IE IBSS atim    00 00
1783          * reserved        00 00 00 00
1784          * capability      02 00
1785          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1786          * fail timeout    ff 00
1787          * probe delay     00 00
1788          */
1789         memset(&cmd, 0, sizeof(cmd));
1790         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1791
1792         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1793         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1794         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1795         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1796         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1797         cmd.bss.ds.header.len = 1;
1798         cmd.bss.ds.channel = params->channel->hw_value;
1799         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1800         cmd.bss.ibss.header.len = 2;
1801         cmd.bss.ibss.atimwindow = 0;
1802         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1803
1804         /* set rates to the intersection of our rates and the rates in the
1805            bss */
1806         if (!rates_eid) {
1807                 lbs_add_rates(cmd.bss.rates);
1808         } else {
1809                 int hw, i;
1810                 u8 rates_max = rates_eid[1];
1811                 u8 *rates = cmd.bss.rates;
1812                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1813                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1814                         for (i = 0; i < rates_max; i++) {
1815                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1816                                         u8 rate = rates_eid[i+2];
1817                                         if (rate == 0x02 || rate == 0x04 ||
1818                                             rate == 0x0b || rate == 0x16)
1819                                                 rate |= 0x80;
1820                                         *rates++ = rate;
1821                                 }
1822                         }
1823                 }
1824         }
1825
1826         /* Only v8 and below support setting this */
1827         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1828                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1829                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1830         }
1831         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1832         if (ret)
1833                 goto out;
1834
1835         /*
1836          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1837          *
1838          * response        2c 80
1839          * size            09 00
1840          * sequence        xx xx
1841          * result          00 00
1842          * reserved        00
1843          */
1844         lbs_join_post(priv, params, bss->bssid, bss->capability);
1845
1846  out:
1847         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1848         return ret;
1849 }
1850
1851
1852
1853 static int lbs_ibss_start_new(struct lbs_private *priv,
1854         struct cfg80211_ibss_params *params)
1855 {
1856         struct cmd_ds_802_11_ad_hoc_start cmd;
1857         struct cmd_ds_802_11_ad_hoc_result *resp =
1858                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1859         u8 preamble = RADIO_PREAMBLE_SHORT;
1860         int ret = 0;
1861         u16 capability;
1862
1863         lbs_deb_enter(LBS_DEB_CFG80211);
1864
1865         ret = lbs_set_radio(priv, preamble, 1);
1866         if (ret)
1867                 goto out;
1868
1869         /*
1870          * Example CMD_802_11_AD_HOC_START command:
1871          *
1872          * command         2b 00         CMD_802_11_AD_HOC_START
1873          * size            b1 00
1874          * sequence        xx xx
1875          * result          00 00
1876          * ssid            54 45 53 54 00 00 00 00
1877          *                 00 00 00 00 00 00 00 00
1878          *                 00 00 00 00 00 00 00 00
1879          *                 00 00 00 00 00 00 00 00
1880          * bss type        02
1881          * beacon period   64 00
1882          * dtim period     00
1883          * IE IBSS         06
1884          * IE IBSS len     02
1885          * IE IBSS atim    00 00
1886          * reserved        00 00 00 00
1887          * IE DS           03
1888          * IE DS len       01
1889          * IE DS channel   01
1890          * reserved        00 00 00 00
1891          * probe delay     00 00
1892          * capability      02 00
1893          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1894          *                 0c 12 18 24 30 48 60 6c
1895          * padding         100 bytes
1896          */
1897         memset(&cmd, 0, sizeof(cmd));
1898         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1899         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1900         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1901         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1902         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1903         cmd.ibss.header.len = 2;
1904         cmd.ibss.atimwindow = 0;
1905         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1906         cmd.ds.header.len = 1;
1907         cmd.ds.channel = params->channel->hw_value;
1908         /* Only v8 and below support setting probe delay */
1909         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1910                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1911         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1912         capability = WLAN_CAPABILITY_IBSS;
1913         cmd.capability = cpu_to_le16(capability);
1914         lbs_add_rates(cmd.rates);
1915
1916
1917         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1918         if (ret)
1919                 goto out;
1920
1921         /*
1922          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1923          *
1924          * response        2b 80
1925          * size            14 00
1926          * sequence        xx xx
1927          * result          00 00
1928          * reserved        00
1929          * bssid           02 2b 7b 0f 86 0e
1930          */
1931         lbs_join_post(priv, params, resp->bssid, capability);
1932
1933  out:
1934         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1935         return ret;
1936 }
1937
1938
1939 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1940                 struct cfg80211_ibss_params *params)
1941 {
1942         struct lbs_private *priv = wiphy_priv(wiphy);
1943         int ret = 0;
1944         struct cfg80211_bss *bss;
1945         DECLARE_SSID_BUF(ssid_buf);
1946
1947         lbs_deb_enter(LBS_DEB_CFG80211);
1948
1949         if (!params->channel) {
1950                 ret = -ENOTSUPP;
1951                 goto out;
1952         }
1953
1954         ret = lbs_set_channel(priv, params->channel->hw_value);
1955         if (ret)
1956                 goto out;
1957
1958         /* Search if someone is beaconing. This assumes that the
1959          * bss list is populated already */
1960         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1961                 params->ssid, params->ssid_len,
1962                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1963
1964         if (bss) {
1965                 ret = lbs_ibss_join_existing(priv, params, bss);
1966                 cfg80211_put_bss(bss);
1967         } else
1968                 ret = lbs_ibss_start_new(priv, params);
1969
1970
1971  out:
1972         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1973         return ret;
1974 }
1975
1976
1977 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1978 {
1979         struct lbs_private *priv = wiphy_priv(wiphy);
1980         struct cmd_ds_802_11_ad_hoc_stop cmd;
1981         int ret = 0;
1982
1983         lbs_deb_enter(LBS_DEB_CFG80211);
1984
1985         memset(&cmd, 0, sizeof(cmd));
1986         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1987         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1988
1989         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1990         lbs_mac_event_disconnected(priv);
1991
1992         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1993         return ret;
1994 }
1995
1996
1997
1998
1999 /***************************************************************************
2000  * Initialization
2001  */
2002
2003 static struct cfg80211_ops lbs_cfg80211_ops = {
2004         .set_channel = lbs_cfg_set_channel,
2005         .scan = lbs_cfg_scan,
2006         .connect = lbs_cfg_connect,
2007         .disconnect = lbs_cfg_disconnect,
2008         .add_key = lbs_cfg_add_key,
2009         .del_key = lbs_cfg_del_key,
2010         .set_default_key = lbs_cfg_set_default_key,
2011         .get_station = lbs_cfg_get_station,
2012         .dump_survey = lbs_get_survey,
2013         .change_virtual_intf = lbs_change_intf,
2014         .join_ibss = lbs_join_ibss,
2015         .leave_ibss = lbs_leave_ibss,
2016 };
2017
2018
2019 /*
2020  * At this time lbs_private *priv doesn't even exist, so we just allocate
2021  * memory and don't initialize the wiphy further. This is postponed until we
2022  * can talk to the firmware and happens at registration time in
2023  * lbs_cfg_wiphy_register().
2024  */
2025 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2026 {
2027         int ret = 0;
2028         struct wireless_dev *wdev;
2029
2030         lbs_deb_enter(LBS_DEB_CFG80211);
2031
2032         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2033         if (!wdev) {
2034                 dev_err(dev, "cannot allocate wireless device\n");
2035                 return ERR_PTR(-ENOMEM);
2036         }
2037
2038         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2039         if (!wdev->wiphy) {
2040                 dev_err(dev, "cannot allocate wiphy\n");
2041                 ret = -ENOMEM;
2042                 goto err_wiphy_new;
2043         }
2044
2045         lbs_deb_leave(LBS_DEB_CFG80211);
2046         return wdev;
2047
2048  err_wiphy_new:
2049         kfree(wdev);
2050         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2051         return ERR_PTR(ret);
2052 }
2053
2054
2055 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2056 {
2057         struct region_code_mapping {
2058                 const char *cn;
2059                 int code;
2060         };
2061
2062         /* Section 5.17.2 */
2063         static const struct region_code_mapping regmap[] = {
2064                 {"US ", 0x10}, /* US FCC */
2065                 {"CA ", 0x20}, /* Canada */
2066                 {"EU ", 0x30}, /* ETSI   */
2067                 {"ES ", 0x31}, /* Spain  */
2068                 {"FR ", 0x32}, /* France */
2069                 {"JP ", 0x40}, /* Japan  */
2070         };
2071         size_t i;
2072
2073         lbs_deb_enter(LBS_DEB_CFG80211);
2074
2075         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2076                 if (regmap[i].code == priv->regioncode) {
2077                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2078                         break;
2079                 }
2080
2081         lbs_deb_leave(LBS_DEB_CFG80211);
2082 }
2083
2084
2085 /*
2086  * This function get's called after lbs_setup_firmware() determined the
2087  * firmware capabities. So we can setup the wiphy according to our
2088  * hardware/firmware.
2089  */
2090 int lbs_cfg_register(struct lbs_private *priv)
2091 {
2092         struct wireless_dev *wdev = priv->wdev;
2093         int ret;
2094
2095         lbs_deb_enter(LBS_DEB_CFG80211);
2096
2097         wdev->wiphy->max_scan_ssids = 1;
2098         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2099
2100         wdev->wiphy->interface_modes =
2101                         BIT(NL80211_IFTYPE_STATION) |
2102                         BIT(NL80211_IFTYPE_ADHOC);
2103         if (lbs_rtap_supported(priv))
2104                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2105
2106         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2107
2108         /*
2109          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2110          * never seen a firmware without WPA
2111          */
2112         wdev->wiphy->cipher_suites = cipher_suites;
2113         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2114         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2115
2116         ret = wiphy_register(wdev->wiphy);
2117         if (ret < 0)
2118                 lbs_pr_err("cannot register wiphy device\n");
2119
2120         priv->wiphy_registered = true;
2121
2122         ret = register_netdev(priv->dev);
2123         if (ret)
2124                 lbs_pr_err("cannot register network device\n");
2125
2126         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2127
2128         lbs_cfg_set_regulatory_hint(priv);
2129
2130         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2131         return ret;
2132 }
2133
2134 int lbs_reg_notifier(struct wiphy *wiphy,
2135                 struct regulatory_request *request)
2136 {
2137         struct lbs_private *priv = wiphy_priv(wiphy);
2138         int ret;
2139
2140         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2141                         "callback for domain %c%c\n", request->alpha2[0],
2142                         request->alpha2[1]);
2143
2144         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2145
2146         lbs_deb_leave(LBS_DEB_CFG80211);
2147         return ret;
2148 }
2149
2150 void lbs_scan_deinit(struct lbs_private *priv)
2151 {
2152         lbs_deb_enter(LBS_DEB_CFG80211);
2153         cancel_delayed_work_sync(&priv->scan_work);
2154 }
2155
2156
2157 void lbs_cfg_free(struct lbs_private *priv)
2158 {
2159         struct wireless_dev *wdev = priv->wdev;
2160
2161         lbs_deb_enter(LBS_DEB_CFG80211);
2162
2163         if (!wdev)
2164                 return;
2165
2166         if (priv->wiphy_registered)
2167                 wiphy_unregister(wdev->wiphy);
2168
2169         if (wdev->wiphy)
2170                 wiphy_free(wdev->wiphy);
2171
2172         kfree(wdev);
2173 }