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, bool unicast,
1426                                    bool multicast)
1427 {
1428         struct lbs_private *priv = wiphy_priv(wiphy);
1429
1430         lbs_deb_enter(LBS_DEB_CFG80211);
1431
1432         if (key_index != priv->wep_tx_key) {
1433                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1434                 priv->wep_tx_key = key_index;
1435                 lbs_set_wep_keys(priv);
1436         }
1437
1438         return 0;
1439 }
1440
1441
1442 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1443                            u8 idx, bool pairwise, const u8 *mac_addr,
1444                            struct key_params *params)
1445 {
1446         struct lbs_private *priv = wiphy_priv(wiphy);
1447         u16 key_info;
1448         u16 key_type;
1449         int ret = 0;
1450
1451         lbs_deb_enter(LBS_DEB_CFG80211);
1452
1453         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1454                       params->cipher, mac_addr);
1455         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1456                       idx, params->key_len);
1457         if (params->key_len)
1458                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1459                             params->key, params->key_len);
1460
1461         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1462         if (params->seq_len)
1463                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1464                             params->seq, params->seq_len);
1465
1466         switch (params->cipher) {
1467         case WLAN_CIPHER_SUITE_WEP40:
1468         case WLAN_CIPHER_SUITE_WEP104:
1469                 /* actually compare if something has changed ... */
1470                 if ((priv->wep_key_len[idx] != params->key_len) ||
1471                         memcmp(priv->wep_key[idx],
1472                                params->key, params->key_len) != 0) {
1473                         priv->wep_key_len[idx] = params->key_len;
1474                         memcpy(priv->wep_key[idx],
1475                                params->key, params->key_len);
1476                         lbs_set_wep_keys(priv);
1477                 }
1478                 break;
1479         case WLAN_CIPHER_SUITE_TKIP:
1480         case WLAN_CIPHER_SUITE_CCMP:
1481                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1482                                                    ? KEY_INFO_WPA_UNICAST
1483                                                    : KEY_INFO_WPA_MCAST);
1484                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1485                         ? KEY_TYPE_ID_TKIP
1486                         : KEY_TYPE_ID_AES;
1487                 lbs_set_key_material(priv,
1488                                      key_type,
1489                                      key_info,
1490                                      params->key, params->key_len);
1491                 break;
1492         default:
1493                 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1494                 ret = -ENOTSUPP;
1495                 break;
1496         }
1497
1498         return ret;
1499 }
1500
1501
1502 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1503                            u8 key_index, bool pairwise, const u8 *mac_addr)
1504 {
1505
1506         lbs_deb_enter(LBS_DEB_CFG80211);
1507
1508         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1509                       key_index, mac_addr);
1510
1511 #ifdef TODO
1512         struct lbs_private *priv = wiphy_priv(wiphy);
1513         /*
1514          * I think can keep this a NO-OP, because:
1515
1516          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1517          * - neither "iw" nor "wpa_supplicant" won't call this during
1518          *   an ongoing connection
1519          * - TODO: but I have to check if this is still true when
1520          *   I set the AP to periodic re-keying
1521          * - we've not kzallec() something when we've added a key at
1522          *   lbs_cfg_connect() or lbs_cfg_add_key().
1523          *
1524          * This causes lbs_cfg_del_key() only called at disconnect time,
1525          * where we'd just waste time deleting a key that is not going
1526          * to be used anyway.
1527          */
1528         if (key_index < 3 && priv->wep_key_len[key_index]) {
1529                 priv->wep_key_len[key_index] = 0;
1530                 lbs_set_wep_keys(priv);
1531         }
1532 #endif
1533
1534         return 0;
1535 }
1536
1537
1538 /***************************************************************************
1539  * Get station
1540  */
1541
1542 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1543                               u8 *mac, struct station_info *sinfo)
1544 {
1545         struct lbs_private *priv = wiphy_priv(wiphy);
1546         s8 signal, noise;
1547         int ret;
1548         size_t i;
1549
1550         lbs_deb_enter(LBS_DEB_CFG80211);
1551
1552         sinfo->filled |= STATION_INFO_TX_BYTES |
1553                          STATION_INFO_TX_PACKETS |
1554                          STATION_INFO_RX_BYTES |
1555                          STATION_INFO_RX_PACKETS;
1556         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1557         sinfo->tx_packets = priv->dev->stats.tx_packets;
1558         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1559         sinfo->rx_packets = priv->dev->stats.rx_packets;
1560
1561         /* Get current RSSI */
1562         ret = lbs_get_rssi(priv, &signal, &noise);
1563         if (ret == 0) {
1564                 sinfo->signal = signal;
1565                 sinfo->filled |= STATION_INFO_SIGNAL;
1566         }
1567
1568         /* Convert priv->cur_rate from hw_value to NL80211 value */
1569         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1570                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1571                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1572                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1573                         break;
1574                 }
1575         }
1576
1577         return 0;
1578 }
1579
1580
1581
1582
1583 /***************************************************************************
1584  * "Site survey", here just current channel and noise level
1585  */
1586
1587 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1588         int idx, struct survey_info *survey)
1589 {
1590         struct lbs_private *priv = wiphy_priv(wiphy);
1591         s8 signal, noise;
1592         int ret;
1593
1594         if (idx != 0)
1595                 ret = -ENOENT;
1596
1597         lbs_deb_enter(LBS_DEB_CFG80211);
1598
1599         survey->channel = ieee80211_get_channel(wiphy,
1600                 ieee80211_channel_to_frequency(priv->channel));
1601
1602         ret = lbs_get_rssi(priv, &signal, &noise);
1603         if (ret == 0) {
1604                 survey->filled = SURVEY_INFO_NOISE_DBM;
1605                 survey->noise = noise;
1606         }
1607
1608         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1609         return ret;
1610 }
1611
1612
1613
1614
1615 /***************************************************************************
1616  * Change interface
1617  */
1618
1619 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1620         enum nl80211_iftype type, u32 *flags,
1621                struct vif_params *params)
1622 {
1623         struct lbs_private *priv = wiphy_priv(wiphy);
1624         int ret = 0;
1625
1626         lbs_deb_enter(LBS_DEB_CFG80211);
1627
1628         switch (type) {
1629         case NL80211_IFTYPE_MONITOR:
1630                 ret = lbs_set_monitor_mode(priv, 1);
1631                 break;
1632         case NL80211_IFTYPE_STATION:
1633                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1634                         ret = lbs_set_monitor_mode(priv, 0);
1635                 if (!ret)
1636                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1637                 break;
1638         case NL80211_IFTYPE_ADHOC:
1639                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1640                         ret = lbs_set_monitor_mode(priv, 0);
1641                 if (!ret)
1642                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1643                 break;
1644         default:
1645                 ret = -ENOTSUPP;
1646         }
1647
1648         if (!ret)
1649                 priv->wdev->iftype = type;
1650
1651         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1652         return ret;
1653 }
1654
1655
1656
1657 /***************************************************************************
1658  * IBSS (Ad-Hoc)
1659  */
1660
1661 /* The firmware needs the following bits masked out of the beacon-derived
1662  * capability field when associating/joining to a BSS:
1663  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1664  */
1665 #define CAPINFO_MASK (~(0xda00))
1666
1667
1668 static void lbs_join_post(struct lbs_private *priv,
1669                           struct cfg80211_ibss_params *params,
1670                           u8 *bssid, u16 capability)
1671 {
1672         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1673                    2 + 4 +                      /* basic rates */
1674                    2 + 1 +                      /* DS parameter */
1675                    2 + 2 +                      /* atim */
1676                    2 + 8];                      /* extended rates */
1677         u8 *fake = fake_ie;
1678
1679         lbs_deb_enter(LBS_DEB_CFG80211);
1680
1681         /*
1682          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1683          * the real IE from the firmware. So we fabricate a fake IE based on
1684          * what the firmware actually sends (sniffed with wireshark).
1685          */
1686         /* Fake SSID IE */
1687         *fake++ = WLAN_EID_SSID;
1688         *fake++ = params->ssid_len;
1689         memcpy(fake, params->ssid, params->ssid_len);
1690         fake += params->ssid_len;
1691         /* Fake supported basic rates IE */
1692         *fake++ = WLAN_EID_SUPP_RATES;
1693         *fake++ = 4;
1694         *fake++ = 0x82;
1695         *fake++ = 0x84;
1696         *fake++ = 0x8b;
1697         *fake++ = 0x96;
1698         /* Fake DS channel IE */
1699         *fake++ = WLAN_EID_DS_PARAMS;
1700         *fake++ = 1;
1701         *fake++ = params->channel->hw_value;
1702         /* Fake IBSS params IE */
1703         *fake++ = WLAN_EID_IBSS_PARAMS;
1704         *fake++ = 2;
1705         *fake++ = 0; /* ATIM=0 */
1706         *fake++ = 0;
1707         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1708          * but I don't know how this could be checked */
1709         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1710         *fake++ = 8;
1711         *fake++ = 0x0c;
1712         *fake++ = 0x12;
1713         *fake++ = 0x18;
1714         *fake++ = 0x24;
1715         *fake++ = 0x30;
1716         *fake++ = 0x48;
1717         *fake++ = 0x60;
1718         *fake++ = 0x6c;
1719         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1720
1721         cfg80211_inform_bss(priv->wdev->wiphy,
1722                             params->channel,
1723                             bssid,
1724                             0,
1725                             capability,
1726                             params->beacon_interval,
1727                             fake_ie, fake - fake_ie,
1728                             0, GFP_KERNEL);
1729
1730         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1731         priv->wdev->ssid_len = params->ssid_len;
1732
1733         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1734
1735         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1736         priv->connect_status = LBS_CONNECTED;
1737         netif_carrier_on(priv->dev);
1738         if (!priv->tx_pending_len)
1739                 netif_wake_queue(priv->dev);
1740
1741         lbs_deb_leave(LBS_DEB_CFG80211);
1742 }
1743
1744 static int lbs_ibss_join_existing(struct lbs_private *priv,
1745         struct cfg80211_ibss_params *params,
1746         struct cfg80211_bss *bss)
1747 {
1748         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1749         struct cmd_ds_802_11_ad_hoc_join cmd;
1750         u8 preamble = RADIO_PREAMBLE_SHORT;
1751         int ret = 0;
1752
1753         lbs_deb_enter(LBS_DEB_CFG80211);
1754
1755         /* TODO: set preamble based on scan result */
1756         ret = lbs_set_radio(priv, preamble, 1);
1757         if (ret)
1758                 goto out;
1759
1760         /*
1761          * Example CMD_802_11_AD_HOC_JOIN command:
1762          *
1763          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1764          * size            65 00
1765          * sequence        xx xx
1766          * result          00 00
1767          * bssid           02 27 27 97 2f 96
1768          * ssid            49 42 53 53 00 00 00 00
1769          *                 00 00 00 00 00 00 00 00
1770          *                 00 00 00 00 00 00 00 00
1771          *                 00 00 00 00 00 00 00 00
1772          * type            02            CMD_BSS_TYPE_IBSS
1773          * beacon period   64 00
1774          * dtim period     00
1775          * timestamp       00 00 00 00 00 00 00 00
1776          * localtime       00 00 00 00 00 00 00 00
1777          * IE DS           03
1778          * IE DS len       01
1779          * IE DS channel   01
1780          * reserveed       00 00 00 00
1781          * IE IBSS         06
1782          * IE IBSS len     02
1783          * IE IBSS atim    00 00
1784          * reserved        00 00 00 00
1785          * capability      02 00
1786          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1787          * fail timeout    ff 00
1788          * probe delay     00 00
1789          */
1790         memset(&cmd, 0, sizeof(cmd));
1791         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1792
1793         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1794         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1795         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1796         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1797         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1798         cmd.bss.ds.header.len = 1;
1799         cmd.bss.ds.channel = params->channel->hw_value;
1800         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1801         cmd.bss.ibss.header.len = 2;
1802         cmd.bss.ibss.atimwindow = 0;
1803         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1804
1805         /* set rates to the intersection of our rates and the rates in the
1806            bss */
1807         if (!rates_eid) {
1808                 lbs_add_rates(cmd.bss.rates);
1809         } else {
1810                 int hw, i;
1811                 u8 rates_max = rates_eid[1];
1812                 u8 *rates = cmd.bss.rates;
1813                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1814                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1815                         for (i = 0; i < rates_max; i++) {
1816                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1817                                         u8 rate = rates_eid[i+2];
1818                                         if (rate == 0x02 || rate == 0x04 ||
1819                                             rate == 0x0b || rate == 0x16)
1820                                                 rate |= 0x80;
1821                                         *rates++ = rate;
1822                                 }
1823                         }
1824                 }
1825         }
1826
1827         /* Only v8 and below support setting this */
1828         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1829                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1830                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1831         }
1832         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1833         if (ret)
1834                 goto out;
1835
1836         /*
1837          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1838          *
1839          * response        2c 80
1840          * size            09 00
1841          * sequence        xx xx
1842          * result          00 00
1843          * reserved        00
1844          */
1845         lbs_join_post(priv, params, bss->bssid, bss->capability);
1846
1847  out:
1848         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1849         return ret;
1850 }
1851
1852
1853
1854 static int lbs_ibss_start_new(struct lbs_private *priv,
1855         struct cfg80211_ibss_params *params)
1856 {
1857         struct cmd_ds_802_11_ad_hoc_start cmd;
1858         struct cmd_ds_802_11_ad_hoc_result *resp =
1859                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1860         u8 preamble = RADIO_PREAMBLE_SHORT;
1861         int ret = 0;
1862         u16 capability;
1863
1864         lbs_deb_enter(LBS_DEB_CFG80211);
1865
1866         ret = lbs_set_radio(priv, preamble, 1);
1867         if (ret)
1868                 goto out;
1869
1870         /*
1871          * Example CMD_802_11_AD_HOC_START command:
1872          *
1873          * command         2b 00         CMD_802_11_AD_HOC_START
1874          * size            b1 00
1875          * sequence        xx xx
1876          * result          00 00
1877          * ssid            54 45 53 54 00 00 00 00
1878          *                 00 00 00 00 00 00 00 00
1879          *                 00 00 00 00 00 00 00 00
1880          *                 00 00 00 00 00 00 00 00
1881          * bss type        02
1882          * beacon period   64 00
1883          * dtim period     00
1884          * IE IBSS         06
1885          * IE IBSS len     02
1886          * IE IBSS atim    00 00
1887          * reserved        00 00 00 00
1888          * IE DS           03
1889          * IE DS len       01
1890          * IE DS channel   01
1891          * reserved        00 00 00 00
1892          * probe delay     00 00
1893          * capability      02 00
1894          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1895          *                 0c 12 18 24 30 48 60 6c
1896          * padding         100 bytes
1897          */
1898         memset(&cmd, 0, sizeof(cmd));
1899         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1900         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1901         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1902         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1903         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1904         cmd.ibss.header.len = 2;
1905         cmd.ibss.atimwindow = 0;
1906         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1907         cmd.ds.header.len = 1;
1908         cmd.ds.channel = params->channel->hw_value;
1909         /* Only v8 and below support setting probe delay */
1910         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1911                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1912         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1913         capability = WLAN_CAPABILITY_IBSS;
1914         cmd.capability = cpu_to_le16(capability);
1915         lbs_add_rates(cmd.rates);
1916
1917
1918         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1919         if (ret)
1920                 goto out;
1921
1922         /*
1923          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1924          *
1925          * response        2b 80
1926          * size            14 00
1927          * sequence        xx xx
1928          * result          00 00
1929          * reserved        00
1930          * bssid           02 2b 7b 0f 86 0e
1931          */
1932         lbs_join_post(priv, params, resp->bssid, capability);
1933
1934  out:
1935         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1936         return ret;
1937 }
1938
1939
1940 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1941                 struct cfg80211_ibss_params *params)
1942 {
1943         struct lbs_private *priv = wiphy_priv(wiphy);
1944         int ret = 0;
1945         struct cfg80211_bss *bss;
1946         DECLARE_SSID_BUF(ssid_buf);
1947
1948         lbs_deb_enter(LBS_DEB_CFG80211);
1949
1950         if (!params->channel) {
1951                 ret = -ENOTSUPP;
1952                 goto out;
1953         }
1954
1955         ret = lbs_set_channel(priv, params->channel->hw_value);
1956         if (ret)
1957                 goto out;
1958
1959         /* Search if someone is beaconing. This assumes that the
1960          * bss list is populated already */
1961         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1962                 params->ssid, params->ssid_len,
1963                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1964
1965         if (bss) {
1966                 ret = lbs_ibss_join_existing(priv, params, bss);
1967                 cfg80211_put_bss(bss);
1968         } else
1969                 ret = lbs_ibss_start_new(priv, params);
1970
1971
1972  out:
1973         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1974         return ret;
1975 }
1976
1977
1978 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1979 {
1980         struct lbs_private *priv = wiphy_priv(wiphy);
1981         struct cmd_ds_802_11_ad_hoc_stop cmd;
1982         int ret = 0;
1983
1984         lbs_deb_enter(LBS_DEB_CFG80211);
1985
1986         memset(&cmd, 0, sizeof(cmd));
1987         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1988         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1989
1990         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1991         lbs_mac_event_disconnected(priv);
1992
1993         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1994         return ret;
1995 }
1996
1997
1998
1999
2000 /***************************************************************************
2001  * Initialization
2002  */
2003
2004 static struct cfg80211_ops lbs_cfg80211_ops = {
2005         .set_channel = lbs_cfg_set_channel,
2006         .scan = lbs_cfg_scan,
2007         .connect = lbs_cfg_connect,
2008         .disconnect = lbs_cfg_disconnect,
2009         .add_key = lbs_cfg_add_key,
2010         .del_key = lbs_cfg_del_key,
2011         .set_default_key = lbs_cfg_set_default_key,
2012         .get_station = lbs_cfg_get_station,
2013         .dump_survey = lbs_get_survey,
2014         .change_virtual_intf = lbs_change_intf,
2015         .join_ibss = lbs_join_ibss,
2016         .leave_ibss = lbs_leave_ibss,
2017 };
2018
2019
2020 /*
2021  * At this time lbs_private *priv doesn't even exist, so we just allocate
2022  * memory and don't initialize the wiphy further. This is postponed until we
2023  * can talk to the firmware and happens at registration time in
2024  * lbs_cfg_wiphy_register().
2025  */
2026 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2027 {
2028         int ret = 0;
2029         struct wireless_dev *wdev;
2030
2031         lbs_deb_enter(LBS_DEB_CFG80211);
2032
2033         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2034         if (!wdev) {
2035                 dev_err(dev, "cannot allocate wireless device\n");
2036                 return ERR_PTR(-ENOMEM);
2037         }
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         lbs_deb_leave(LBS_DEB_CFG80211);
2047         return wdev;
2048
2049  err_wiphy_new:
2050         kfree(wdev);
2051         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2052         return ERR_PTR(ret);
2053 }
2054
2055
2056 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2057 {
2058         struct region_code_mapping {
2059                 const char *cn;
2060                 int code;
2061         };
2062
2063         /* Section 5.17.2 */
2064         static const struct region_code_mapping regmap[] = {
2065                 {"US ", 0x10}, /* US FCC */
2066                 {"CA ", 0x20}, /* Canada */
2067                 {"EU ", 0x30}, /* ETSI   */
2068                 {"ES ", 0x31}, /* Spain  */
2069                 {"FR ", 0x32}, /* France */
2070                 {"JP ", 0x40}, /* Japan  */
2071         };
2072         size_t i;
2073
2074         lbs_deb_enter(LBS_DEB_CFG80211);
2075
2076         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2077                 if (regmap[i].code == priv->regioncode) {
2078                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2079                         break;
2080                 }
2081
2082         lbs_deb_leave(LBS_DEB_CFG80211);
2083 }
2084
2085
2086 /*
2087  * This function get's called after lbs_setup_firmware() determined the
2088  * firmware capabities. So we can setup the wiphy according to our
2089  * hardware/firmware.
2090  */
2091 int lbs_cfg_register(struct lbs_private *priv)
2092 {
2093         struct wireless_dev *wdev = priv->wdev;
2094         int ret;
2095
2096         lbs_deb_enter(LBS_DEB_CFG80211);
2097
2098         wdev->wiphy->max_scan_ssids = 1;
2099         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2100
2101         wdev->wiphy->interface_modes =
2102                         BIT(NL80211_IFTYPE_STATION) |
2103                         BIT(NL80211_IFTYPE_ADHOC);
2104         if (lbs_rtap_supported(priv))
2105                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2106
2107         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2108
2109         /*
2110          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2111          * never seen a firmware without WPA
2112          */
2113         wdev->wiphy->cipher_suites = cipher_suites;
2114         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2115         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2116
2117         ret = wiphy_register(wdev->wiphy);
2118         if (ret < 0)
2119                 lbs_pr_err("cannot register wiphy device\n");
2120
2121         priv->wiphy_registered = true;
2122
2123         ret = register_netdev(priv->dev);
2124         if (ret)
2125                 lbs_pr_err("cannot register network device\n");
2126
2127         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2128
2129         lbs_cfg_set_regulatory_hint(priv);
2130
2131         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2132         return ret;
2133 }
2134
2135 int lbs_reg_notifier(struct wiphy *wiphy,
2136                 struct regulatory_request *request)
2137 {
2138         struct lbs_private *priv = wiphy_priv(wiphy);
2139         int ret;
2140
2141         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2142                         "callback for domain %c%c\n", request->alpha2[0],
2143                         request->alpha2[1]);
2144
2145         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2146
2147         lbs_deb_leave(LBS_DEB_CFG80211);
2148         return ret;
2149 }
2150
2151 void lbs_scan_deinit(struct lbs_private *priv)
2152 {
2153         lbs_deb_enter(LBS_DEB_CFG80211);
2154         cancel_delayed_work_sync(&priv->scan_work);
2155 }
2156
2157
2158 void lbs_cfg_free(struct lbs_private *priv)
2159 {
2160         struct wireless_dev *wdev = priv->wdev;
2161
2162         lbs_deb_enter(LBS_DEB_CFG80211);
2163
2164         if (!wdev)
2165                 return;
2166
2167         if (priv->wiphy_registered)
2168                 wiphy_unregister(wdev->wiphy);
2169
2170         if (wdev->wiphy)
2171                 wiphy_free(wdev->wiphy);
2172
2173         kfree(wdev);
2174 }