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/slab.h>
  10 #include <linux/ieee80211.h>
  11 #include <net/cfg80211.h>
  12 #include <asm/unaligned.h>
  13
  14 #include "decl.h"
  15 #include "cfg.h"
  16 #include "cmd.h"
  17
  18
  19 #define CHAN2G(_channel, _freq, _flags) {        \
  20         .band             = IEEE80211_BAND_2GHZ, \
  21         .center_freq      = (_freq),             \
  22         .hw_value         = (_channel),          \
  23         .flags            = (_flags),            \
  24         .max_antenna_gain = 0,                   \
  25         .max_power        = 30,                  \
  26 }
  27
  28 static struct ieee80211_channel lbs_2ghz_channels[] = {
  29         CHAN2G(1,  2412, 0),
  30         CHAN2G(2,  2417, 0),
  31         CHAN2G(3,  2422, 0),
  32         CHAN2G(4,  2427, 0),
  33         CHAN2G(5,  2432, 0),
  34         CHAN2G(6,  2437, 0),
  35         CHAN2G(7,  2442, 0),
  36         CHAN2G(8,  2447, 0),
  37         CHAN2G(9,  2452, 0),
  38         CHAN2G(10, 2457, 0),
  39         CHAN2G(11, 2462, 0),
  40         CHAN2G(12, 2467, 0),
  41         CHAN2G(13, 2472, 0),
  42         CHAN2G(14, 2484, 0),
  43 };
  44
  45 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  46         .bitrate  = (_rate),                    \
  47         .hw_value = (_hw_value),                \
  48         .flags    = (_flags),                   \
  49 }
  50
  51
  52 /* Table 6 in section 3.2.1.1 */
  53 static struct ieee80211_rate lbs_rates[] = {
  54         RATETAB_ENT(10,  0,  0),
  55         RATETAB_ENT(20,  1,  0),
  56         RATETAB_ENT(55,  2,  0),
  57         RATETAB_ENT(110, 3,  0),
  58         RATETAB_ENT(60,  9,  0),
  59         RATETAB_ENT(90,  6,  0),
  60         RATETAB_ENT(120, 7,  0),
  61         RATETAB_ENT(180, 8,  0),
  62         RATETAB_ENT(240, 9,  0),
  63         RATETAB_ENT(360, 10, 0),
  64         RATETAB_ENT(480, 11, 0),
  65         RATETAB_ENT(540, 12, 0),
  66 };
  67
  68 static struct ieee80211_supported_band lbs_band_2ghz = {
  69         .channels = lbs_2ghz_channels,
  70         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  71         .bitrates = lbs_rates,
  72         .n_bitrates = ARRAY_SIZE(lbs_rates),
  73 };
  74
  75
  76 static const u32 cipher_suites[] = {
  77         WLAN_CIPHER_SUITE_WEP40,
  78         WLAN_CIPHER_SUITE_WEP104,
  79         WLAN_CIPHER_SUITE_TKIP,
  80         WLAN_CIPHER_SUITE_CCMP,
  81 };
  82
  83 /* Time to stay on the channel */
  84 #define LBS_DWELL_PASSIVE 100
  85 #define LBS_DWELL_ACTIVE  40
  86
  87
  88 /***************************************************************************
  89  * Misc utility functions
  90  *
  91  * TLVs are Marvell specific. They are very similar to IEs, they have the
  92  * same structure: type, length, data*. The only difference: for IEs, the
  93  * type and length are u8, but for TLVs they're __le16.
  94  */
  95
  96 /*
  97  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
  98  * in the firmware spec
  99  */
 100 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 101 {
 102         int ret = -ENOTSUPP;
 103
 104         switch (auth_type) {
 105         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 106         case NL80211_AUTHTYPE_SHARED_KEY:
 107                 ret = auth_type;
 108                 break;
 109         case NL80211_AUTHTYPE_AUTOMATIC:
 110                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 111                 break;
 112         case NL80211_AUTHTYPE_NETWORK_EAP:
 113                 ret = 0x80;
 114                 break;
 115         default:
 116                 /* silence compiler */
 117                 break;
 118         }
 119         return ret;
 120 }
 121
 122
 123 /* Various firmware commands need the list of supported rates, but with
 124    the hight-bit set for basic rates */
 125 static int lbs_add_rates(u8 *rates)
 126 {
 127         size_t i;
 128
 129         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 130                 u8 rate = lbs_rates[i].bitrate / 5;
 131                 if (rate == 0x02 || rate == 0x04 ||
 132                     rate == 0x0b || rate == 0x16)
 133                         rate |= 0x80;
 134                 rates[i] = rate;
 135         }
 136         return ARRAY_SIZE(lbs_rates);
 137 }
 138
 139
 140 /***************************************************************************
 141  * TLV utility functions
 142  *
 143  * TLVs are Marvell specific. They are very similar to IEs, they have the
 144  * same structure: type, length, data*. The only difference: for IEs, the
 145  * type and length are u8, but for TLVs they're __le16.
 146  */
 147
 148
 149 /*
 150  * Add ssid TLV
 151  */
 152 #define LBS_MAX_SSID_TLV_SIZE                   \
 153         (sizeof(struct mrvl_ie_header)          \
 154          + IEEE80211_MAX_SSID_LEN)
 155
 156 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 157 {
 158         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 159
 160         /*
 161          * TLV-ID SSID  00 00
 162          * length       06 00
 163          * ssid         4d 4e 54 45 53 54
 164          */
 165         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 166         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 167         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 168         return sizeof(ssid_tlv->header) + ssid_len;
 169 }
 170
 171
 172 /*
 173  * Add channel list TLV (section 8.4.2)
 174  *
 175  * Actual channel data comes from priv->wdev->wiphy->channels.
 176  */
 177 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 178         (sizeof(struct mrvl_ie_header)                                  \
 179          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 180
 181 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 182                                     int last_channel, int active_scan)
 183 {
 184         int chanscanparamsize = sizeof(struct chanscanparamset) *
 185                 (last_channel - priv->scan_channel);
 186
 187         struct mrvl_ie_header *header = (void *) tlv;
 188
 189         /*
 190          * TLV-ID CHANLIST  01 01
 191          * length           0e 00
 192          * channel          00 01 00 00 00 64 00
 193          *   radio type     00
 194          *   channel           01
 195          *   scan type            00
 196          *   min scan time           00 00
 197          *   max scan time                 64 00
 198          * channel 2        00 02 00 00 00 64 00
 199          *
 200          */
 201
 202         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 203         header->len  = cpu_to_le16(chanscanparamsize);
 204         tlv += sizeof(struct mrvl_ie_header);
 205
 206         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 207                      last_channel); */
 208         memset(tlv, 0, chanscanparamsize);
 209
 210         while (priv->scan_channel < last_channel) {
 211                 struct chanscanparamset *param = (void *) tlv;
 212
 213                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 214                 param->channumber =
 215                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 216                 if (active_scan) {
 217                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 218                 } else {
 219                         param->chanscanmode.passivescan = 1;
 220                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 221                 }
 222                 tlv += sizeof(struct chanscanparamset);
 223                 priv->scan_channel++;
 224         }
 225         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 226 }
 227
 228
 229 /*
 230  * Add rates TLV
 231  *
 232  * The rates are in lbs_bg_rates[], but for the 802.11b
 233  * rates the high bit is set. We add this TLV only because
 234  * there's a firmware which otherwise doesn't report all
 235  * APs in range.
 236  */
 237 #define LBS_MAX_RATES_TLV_SIZE                  \
 238         (sizeof(struct mrvl_ie_header)          \
 239          + (ARRAY_SIZE(lbs_rates)))
 240
 241 /* Adds a TLV with all rates the hardware supports */
 242 static int lbs_add_supported_rates_tlv(u8 *tlv)
 243 {
 244         size_t i;
 245         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 246
 247         /*
 248          * TLV-ID RATES  01 00
 249          * length        0e 00
 250          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 251          */
 252         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 253         tlv += sizeof(rate_tlv->header);
 254         i = lbs_add_rates(tlv);
 255         tlv += i;
 256         rate_tlv->header.len = cpu_to_le16(i);
 257         return sizeof(rate_tlv->header) + i;
 258 }
 259
 260 /* Add common rates from a TLV and return the new end of the TLV */
 261 static u8 *
 262 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 263 {
 264         int hw, ap, ap_max = ie[1];
 265         u8 hw_rate;
 266
 267         /* Advance past IE header */
 268         ie += 2;
 269
 270         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 271
 272         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 273                 hw_rate = lbs_rates[hw].bitrate / 5;
 274                 for (ap = 0; ap < ap_max; ap++) {
 275                         if (hw_rate == (ie[ap] & 0x7f)) {
 276                                 *tlv++ = ie[ap];
 277                                 *nrates = *nrates + 1;
 278                         }
 279                 }
 280         }
 281         return tlv;
 282 }
 283
 284 /*
 285  * Adds a TLV with all rates the hardware *and* BSS supports.
 286  */
 287 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 288 {
 289         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 290         const u8 *rates_eid, *ext_rates_eid;
 291         int n = 0;
 292
 293         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 294         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 295
 296         /*
 297          * 01 00                   TLV_TYPE_RATES
 298          * 04 00                   len
 299          * 82 84 8b 96             rates
 300          */
 301         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 302         tlv += sizeof(rate_tlv->header);
 303
 304         /* Add basic rates */
 305         if (rates_eid) {
 306                 tlv = add_ie_rates(tlv, rates_eid, &n);
 307
 308                 /* Add extended rates, if any */
 309                 if (ext_rates_eid)
 310                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 311         } else {
 312                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 313                 /* Fallback: add basic 802.11b rates */
 314                 *tlv++ = 0x82;
 315                 *tlv++ = 0x84;
 316                 *tlv++ = 0x8b;
 317                 *tlv++ = 0x96;
 318                 n = 4;
 319         }
 320
 321         rate_tlv->header.len = cpu_to_le16(n);
 322         return sizeof(rate_tlv->header) + n;
 323 }
 324
 325
 326 /*
 327  * Add auth type TLV.
 328  *
 329  * This is only needed for newer firmware (V9 and up).
 330  */
 331 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 332         sizeof(struct mrvl_ie_auth_type)
 333
 334 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 335 {
 336         struct mrvl_ie_auth_type *auth = (void *) tlv;
 337
 338         /*
 339          * 1f 01  TLV_TYPE_AUTH_TYPE
 340          * 01 00  len
 341          * 01     auth type
 342          */
 343         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 344         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 345         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 346         return sizeof(*auth);
 347 }
 348
 349
 350 /*
 351  * Add channel (phy ds) TLV
 352  */
 353 #define LBS_MAX_CHANNEL_TLV_SIZE \
 354         sizeof(struct mrvl_ie_header)
 355
 356 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 357 {
 358         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 359
 360         /*
 361          * 03 00  TLV_TYPE_PHY_DS
 362          * 01 00  len
 363          * 06     channel
 364          */
 365         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 366         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 367         ds->channel = channel;
 368         return sizeof(*ds);
 369 }
 370
 371
 372 /*
 373  * Add (empty) CF param TLV of the form:
 374  */
 375 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 376         sizeof(struct mrvl_ie_header)
 377
 378 static int lbs_add_cf_param_tlv(u8 *tlv)
 379 {
 380         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 381
 382         /*
 383          * 04 00  TLV_TYPE_CF
 384          * 06 00  len
 385          * 00     cfpcnt
 386          * 00     cfpperiod
 387          * 00 00  cfpmaxduration
 388          * 00 00  cfpdurationremaining
 389          */
 390         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 391         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 392         return sizeof(*cf);
 393 }
 394
 395 /*
 396  * Add WPA TLV
 397  */
 398 #define LBS_MAX_WPA_TLV_SIZE                    \
 399         (sizeof(struct mrvl_ie_header)          \
 400          + 128 /* TODO: I guessed the size */)
 401
 402 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 403 {
 404         size_t tlv_len;
 405
 406         /*
 407          * We need just convert an IE to an TLV. IEs use u8 for the header,
 408          *   u8      type
 409          *   u8      len
 410          *   u8[]    data
 411          * but TLVs use __le16 instead:
 412          *   __le16  type
 413          *   __le16  len
 414          *   u8[]    data
 415          */
 416         *tlv++ = *ie++;
 417         *tlv++ = 0;
 418         tlv_len = *tlv++ = *ie++;
 419         *tlv++ = 0;
 420         while (tlv_len--)
 421                 *tlv++ = *ie++;
 422         /* the TLV is two bytes larger than the IE */
 423         return ie_len + 2;
 424 }
 425
 426 /***************************************************************************
 427  * Set Channel
 428  */
 429
 430 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 431         struct net_device *netdev,
 432         struct ieee80211_channel *channel,
 433         enum nl80211_channel_type channel_type)
 434 {
 435         struct lbs_private *priv = wiphy_priv(wiphy);
 436         int ret = -ENOTSUPP;
 437
 438         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 439                            channel->center_freq, channel_type);
 440
 441         if (channel_type != NL80211_CHAN_NO_HT)
 442                 goto out;
 443
 444         ret = lbs_set_channel(priv, channel->hw_value);
 445
 446  out:
 447         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 448         return ret;
 449 }
 450
 451
 452
 453 /***************************************************************************
 454  * Scanning
 455  */
 456
 457 /*
 458  * When scanning, the firmware doesn't send a nul packet with the power-safe
 459  * bit to the AP. So we cannot stay away from our current channel too long,
 460  * otherwise we loose data. So take a "nap" while scanning every other
 461  * while.
 462  */
 463 #define LBS_SCAN_BEFORE_NAP 4
 464
 465
 466 /*
 467  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 468  * which isn't really an RSSI, as it becomes larger when moving away from
 469  * the AP. Anyway, we need to convert that into mBm.
 470  */
 471 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 472         ((-(int)rssi + 3)*100)
 473
 474 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 475         struct cmd_header *resp)
 476 {
 477         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 478         int bsssize;
 479         const u8 *pos;
 480         u16 nr_sets;
 481         const u8 *tsfdesc;
 482         int tsfsize;
 483         int i;
 484         int ret = -EILSEQ;
 485
 486         lbs_deb_enter(LBS_DEB_CFG80211);
 487
 488         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 489         nr_sets = le16_to_cpu(scanresp->nr_sets);
 490
 491         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 492                         nr_sets, bsssize, le16_to_cpu(resp->size));
 493
 494         if (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         tsfdesc = pos + bsssize;
 527         tsfsize = 4 + 8 * scanresp->nr_sets;
 528
 529         /* Validity check: we expect a Marvell-Local TLV */
 530         i = get_unaligned_le16(tsfdesc);
 531         tsfdesc += 2;
 532         if (i != TLV_TYPE_TSFTIMESTAMP)
 533                 goto done;
 534         /* Validity check: the TLV holds TSF values with 8 bytes each, so
 535          * the size in the TLV must match the nr_sets value */
 536         i = get_unaligned_le16(tsfdesc);
 537         tsfdesc += 2;
 538         if (i / 8 != scanresp->nr_sets)
 539                 goto done;
 540
 541         for (i = 0; i < scanresp->nr_sets; i++) {
 542                 const u8 *bssid;
 543                 const u8 *ie;
 544                 int left;
 545                 int ielen;
 546                 int rssi;
 547                 u16 intvl;
 548                 u16 capa;
 549                 int chan_no = -1;
 550                 const u8 *ssid = NULL;
 551                 u8 ssid_len = 0;
 552                 DECLARE_SSID_BUF(ssid_buf);
 553
 554                 int len = get_unaligned_le16(pos);
 555                 pos += 2;
 556
 557                 /* BSSID */
 558                 bssid = pos;
 559                 pos += ETH_ALEN;
 560                 /* RSSI */
 561                 rssi = *pos++;
 562                 /* Packet time stamp */
 563                 pos += 8;
 564                 /* Beacon interval */
 565                 intvl = get_unaligned_le16(pos);
 566                 pos += 2;
 567                 /* Capabilities */
 568                 capa = get_unaligned_le16(pos);
 569                 pos += 2;
 570
 571                 /* To find out the channel, we must parse the IEs */
 572                 ie = pos;
 573                 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 574                    interval, capabilities */
 575                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 576                 while (left >= 2) {
 577                         u8 id, elen;
 578                         id = *pos++;
 579                         elen = *pos++;
 580                         left -= 2;
 581                         if (elen > left || elen == 0)
 582                                 goto done;
 583                         if (id == WLAN_EID_DS_PARAMS)
 584                                 chan_no = *pos;
 585                         if (id == WLAN_EID_SSID) {
 586                                 ssid = pos;
 587                                 ssid_len = elen;
 588                         }
 589                         left -= elen;
 590                         pos += elen;
 591                 }
 592
 593                 /* No channel, no luck */
 594                 if (chan_no != -1) {
 595                         struct wiphy *wiphy = priv->wdev->wiphy;
 596                         int freq = ieee80211_channel_to_frequency(chan_no);
 597                         struct ieee80211_channel *channel =
 598                                 ieee80211_get_channel(wiphy, freq);
 599
 600                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 601                                      "%d dBm\n",
 602                                      bssid, capa, chan_no,
 603                                      print_ssid(ssid_buf, ssid, ssid_len),
 604                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 605
 606                         if (channel ||
 607                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 608                                 cfg80211_inform_bss(wiphy, channel,
 609                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 610                                         capa, intvl, ie, ielen,
 611                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 612                                         GFP_KERNEL);
 613                 }
 614                 tsfdesc += 8;
 615         }
 616         ret = 0;
 617
 618  done:
 619         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 620         return ret;
 621 }
 622
 623
 624 /*
 625  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 626  * TLV and a rates TLV. Determine the maximum size of them:
 627  */
 628 #define LBS_SCAN_MAX_CMD_SIZE                   \
 629         (sizeof(struct cmd_ds_802_11_scan)      \
 630          + LBS_MAX_SSID_TLV_SIZE                \
 631          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 632          + LBS_MAX_RATES_TLV_SIZE)
 633
 634 /*
 635  * Assumes priv->scan_req is initialized and valid
 636  * Assumes priv->scan_channel is initialized
 637  */
 638 static void lbs_scan_worker(struct work_struct *work)
 639 {
 640         struct lbs_private *priv =
 641                 container_of(work, struct lbs_private, scan_work.work);
 642         struct cmd_ds_802_11_scan *scan_cmd;
 643         u8 *tlv; /* pointer into our current, growing TLV storage area */
 644         int last_channel;
 645         int running, carrier;
 646
 647         lbs_deb_enter(LBS_DEB_SCAN);
 648
 649         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 650         if (scan_cmd == NULL)
 651                 goto out_no_scan_cmd;
 652
 653         /* prepare fixed part of scan command */
 654         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 655
 656         /* stop network while we're away from our main channel */
 657         running = !netif_queue_stopped(priv->dev);
 658         carrier = netif_carrier_ok(priv->dev);
 659         if (running)
 660                 netif_stop_queue(priv->dev);
 661         if (carrier)
 662                 netif_carrier_off(priv->dev);
 663
 664         /* prepare fixed part of scan command */
 665         tlv = scan_cmd->tlvbuffer;
 666
 667         /* add SSID TLV */
 668         if (priv->scan_req->n_ssids)
 669                 tlv += lbs_add_ssid_tlv(tlv,
 670                                         priv->scan_req->ssids[0].ssid,
 671                                         priv->scan_req->ssids[0].ssid_len);
 672
 673         /* add channel TLVs */
 674         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 675         if (last_channel > priv->scan_req->n_channels)
 676                 last_channel = priv->scan_req->n_channels;
 677         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 678                 priv->scan_req->n_ssids);
 679
 680         /* add rates TLV */
 681         tlv += lbs_add_supported_rates_tlv(tlv);
 682
 683         if (priv->scan_channel < priv->scan_req->n_channels) {
 684                 cancel_delayed_work(&priv->scan_work);
 685                 queue_delayed_work(priv->work_thread, &priv->scan_work,
 686                         msecs_to_jiffies(300));
 687         }
 688
 689         /* This is the final data we are about to send */
 690         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 691         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 692                     sizeof(*scan_cmd));
 693         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 694                     tlv - scan_cmd->tlvbuffer);
 695
 696         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 697                 le16_to_cpu(scan_cmd->hdr.size),
 698                 lbs_ret_scan, 0);
 699
 700         if (priv->scan_channel >= priv->scan_req->n_channels) {
 701                 /* Mark scan done */
 702                 cfg80211_scan_done(priv->scan_req, false);
 703                 priv->scan_req = NULL;
 704         }
 705
 706         /* Restart network */
 707         if (carrier)
 708                 netif_carrier_on(priv->dev);
 709         if (running && !priv->tx_pending_len)
 710                 netif_wake_queue(priv->dev);
 711
 712         kfree(scan_cmd);
 713
 714  out_no_scan_cmd:
 715         lbs_deb_leave(LBS_DEB_SCAN);
 716 }
 717
 718
 719 static int lbs_cfg_scan(struct wiphy *wiphy,
 720         struct net_device *dev,
 721         struct cfg80211_scan_request *request)
 722 {
 723         struct lbs_private *priv = wiphy_priv(wiphy);
 724         int ret = 0;
 725
 726         lbs_deb_enter(LBS_DEB_CFG80211);
 727
 728         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 729                 /* old scan request not yet processed */
 730                 ret = -EAGAIN;
 731                 goto out;
 732         }
 733
 734         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 735                 request->n_ssids, request->n_channels, request->ie_len);
 736
 737         priv->scan_channel = 0;
 738         queue_delayed_work(priv->work_thread, &priv->scan_work,
 739                 msecs_to_jiffies(50));
 740
 741         if (priv->surpriseremoved)
 742                 ret = -EIO;
 743
 744         priv->scan_req = request;
 745
 746  out:
 747         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 748         return ret;
 749 }
 750
 751
 752
 753
 754 /***************************************************************************
 755  * Events
 756  */
 757
 758 void lbs_send_disconnect_notification(struct lbs_private *priv)
 759 {
 760         lbs_deb_enter(LBS_DEB_CFG80211);
 761
 762         cfg80211_disconnected(priv->dev,
 763                 0,
 764                 NULL, 0,
 765                 GFP_KERNEL);
 766
 767         lbs_deb_leave(LBS_DEB_CFG80211);
 768 }
 769
 770 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 771 {
 772         lbs_deb_enter(LBS_DEB_CFG80211);
 773
 774         cfg80211_michael_mic_failure(priv->dev,
 775                 priv->assoc_bss,
 776                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 777                         NL80211_KEYTYPE_GROUP :
 778                         NL80211_KEYTYPE_PAIRWISE,
 779                 -1,
 780                 NULL,
 781                 GFP_KERNEL);
 782
 783         lbs_deb_leave(LBS_DEB_CFG80211);
 784 }
 785
 786
 787
 788
 789 /***************************************************************************
 790  * Connect/disconnect
 791  */
 792
 793
 794 /*
 795  * This removes all WEP keys
 796  */
 797 static int lbs_remove_wep_keys(struct lbs_private *priv)
 798 {
 799         struct cmd_ds_802_11_set_wep cmd;
 800         int ret;
 801
 802         lbs_deb_enter(LBS_DEB_CFG80211);
 803
 804         memset(&cmd, 0, sizeof(cmd));
 805         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 806         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 807         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 808
 809         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 810
 811         lbs_deb_leave(LBS_DEB_CFG80211);
 812         return ret;
 813 }
 814
 815 /*
 816  * Set WEP keys
 817  */
 818 static int lbs_set_wep_keys(struct lbs_private *priv)
 819 {
 820         struct cmd_ds_802_11_set_wep cmd;
 821         int i;
 822         int ret;
 823
 824         lbs_deb_enter(LBS_DEB_CFG80211);
 825
 826         /*
 827          * command         13 00
 828          * size            50 00
 829          * sequence        xx xx
 830          * result          00 00
 831          * action          02 00     ACT_ADD
 832          * transmit key    00 00
 833          * type for key 1  01        WEP40
 834          * type for key 2  00
 835          * type for key 3  00
 836          * type for key 4  00
 837          * key 1           39 39 39 39 39 00 00 00
 838          *                 00 00 00 00 00 00 00 00
 839          * key 2           00 00 00 00 00 00 00 00
 840          *                 00 00 00 00 00 00 00 00
 841          * key 3           00 00 00 00 00 00 00 00
 842          *                 00 00 00 00 00 00 00 00
 843          * key 4           00 00 00 00 00 00 00 00
 844          */
 845         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 846             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 847                 /* Only set wep keys if we have at least one of them */
 848                 memset(&cmd, 0, sizeof(cmd));
 849                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 850                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 851                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 852
 853                 for (i = 0; i < 4; i++) {
 854                         switch (priv->wep_key_len[i]) {
 855                         case WLAN_KEY_LEN_WEP40:
 856                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 857                                 break;
 858                         case WLAN_KEY_LEN_WEP104:
 859                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 860                                 break;
 861                         default:
 862                                 cmd.keytype[i] = 0;
 863                                 break;
 864                         }
 865                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 866                                priv->wep_key_len[i]);
 867                 }
 868
 869                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 870         } else {
 871                 /* Otherwise remove all wep keys */
 872                 ret = lbs_remove_wep_keys(priv);
 873         }
 874
 875         lbs_deb_leave(LBS_DEB_CFG80211);
 876         return ret;
 877 }
 878
 879
 880 /*
 881  * Enable/Disable RSN status
 882  */
 883 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 884 {
 885         struct cmd_ds_802_11_enable_rsn cmd;
 886         int ret;
 887
 888         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 889
 890         /*
 891          * cmd       2f 00
 892          * size      0c 00
 893          * sequence  xx xx
 894          * result    00 00
 895          * action    01 00    ACT_SET
 896          * enable    01 00
 897          */
 898         memset(&cmd, 0, sizeof(cmd));
 899         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 900         cmd.action = cpu_to_le16(CMD_ACT_SET);
 901         cmd.enable = cpu_to_le16(enable);
 902
 903         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 904
 905         lbs_deb_leave(LBS_DEB_CFG80211);
 906         return ret;
 907 }
 908
 909
 910 /*
 911  * Set WPA/WPA key material
 912  */
 913
 914 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 915  * get rid of WEXT, this should go into host.h */
 916
 917 struct cmd_key_material {
 918         struct cmd_header hdr;
 919
 920         __le16 action;
 921         struct MrvlIEtype_keyParamSet param;
 922 } __packed;
 923
 924 static int lbs_set_key_material(struct lbs_private *priv,
 925                                 int key_type,
 926                                 int key_info,
 927                                 u8 *key, u16 key_len)
 928 {
 929         struct cmd_key_material cmd;
 930         int ret;
 931
 932         lbs_deb_enter(LBS_DEB_CFG80211);
 933
 934         /*
 935          * Example for WPA (TKIP):
 936          *
 937          * cmd       5e 00
 938          * size      34 00
 939          * sequence  xx xx
 940          * result    00 00
 941          * action    01 00
 942          * TLV type  00 01    key param
 943          * length    00 26
 944          * key type  01 00    TKIP
 945          * key info  06 00    UNICAST | ENABLED
 946          * key len   20 00
 947          * key       32 bytes
 948          */
 949         memset(&cmd, 0, sizeof(cmd));
 950         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 951         cmd.action = cpu_to_le16(CMD_ACT_SET);
 952         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
 953         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
 954         cmd.param.keytypeid = cpu_to_le16(key_type);
 955         cmd.param.keyinfo = cpu_to_le16(key_info);
 956         cmd.param.keylen = cpu_to_le16(key_len);
 957         if (key && key_len)
 958                 memcpy(cmd.param.key, key, key_len);
 959
 960         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
 961
 962         lbs_deb_leave(LBS_DEB_CFG80211);
 963         return ret;
 964 }
 965
 966
 967 /*
 968  * Sets the auth type (open, shared, etc) in the firmware. That
 969  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
 970  * command doesn't send an authentication frame at all, it just
 971  * stores the auth_type.
 972  */
 973 static int lbs_set_authtype(struct lbs_private *priv,
 974                             struct cfg80211_connect_params *sme)
 975 {
 976         struct cmd_ds_802_11_authenticate cmd;
 977         int ret;
 978
 979         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
 980
 981         /*
 982          * cmd        11 00
 983          * size       19 00
 984          * sequence   xx xx
 985          * result     00 00
 986          * BSS id     00 13 19 80 da 30
 987          * auth type  00
 988          * reserved   00 00 00 00 00 00 00 00 00 00
 989          */
 990         memset(&cmd, 0, sizeof(cmd));
 991         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 992         if (sme->bssid)
 993                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
 994         /* convert auth_type */
 995         ret = lbs_auth_to_authtype(sme->auth_type);
 996         if (ret < 0)
 997                 goto done;
 998
 999         cmd.authtype = ret;
1000         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1001
1002  done:
1003         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1004         return ret;
1005 }
1006
1007
1008 /*
1009  * Create association request
1010  */
1011 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1012         (sizeof(struct cmd_ds_802_11_associate)    \
1013          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1014          + LBS_MAX_SSID_TLV_SIZE                   \
1015          + LBS_MAX_CHANNEL_TLV_SIZE                \
1016          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1017          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1018          + LBS_MAX_WPA_TLV_SIZE)
1019
1020 static int lbs_associate(struct lbs_private *priv,
1021                 struct cfg80211_bss *bss,
1022                 struct cfg80211_connect_params *sme)
1023 {
1024         struct cmd_ds_802_11_associate_response *resp;
1025         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1026                                                       GFP_KERNEL);
1027         const u8 *ssid_eid;
1028         size_t len, resp_ie_len;
1029         int status;
1030         int ret;
1031         u8 *pos = &(cmd->iebuf[0]);
1032         u8 *tmp;
1033
1034         lbs_deb_enter(LBS_DEB_CFG80211);
1035
1036         if (!cmd) {
1037                 ret = -ENOMEM;
1038                 goto done;
1039         }
1040
1041         /*
1042          * cmd              50 00
1043          * length           34 00
1044          * sequence         xx xx
1045          * result           00 00
1046          * BSS id           00 13 19 80 da 30
1047          * capabilities     11 00
1048          * listen interval  0a 00
1049          * beacon interval  00 00
1050          * DTIM period      00
1051          * TLVs             xx   (up to 512 bytes)
1052          */
1053         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1054
1055         /* Fill in static fields */
1056         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1057         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1058         cmd->capability = cpu_to_le16(bss->capability);
1059
1060         /* add SSID TLV */
1061         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1062         if (ssid_eid)
1063                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1064         else
1065                 lbs_deb_assoc("no SSID\n");
1066
1067         /* add DS param TLV */
1068         if (bss->channel)
1069                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1070         else
1071                 lbs_deb_assoc("no channel\n");
1072
1073         /* add (empty) CF param TLV */
1074         pos += lbs_add_cf_param_tlv(pos);
1075
1076         /* add rates TLV */
1077         tmp = pos + 4; /* skip Marvell IE header */
1078         pos += lbs_add_common_rates_tlv(pos, bss);
1079         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1080
1081         /* add auth type TLV */
1082         if (priv->fwrelease >= 0x09000000)
1083                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1084
1085         /* add WPA/WPA2 TLV */
1086         if (sme->ie && sme->ie_len)
1087                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1088
1089         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1090                 (u16)(pos - (u8 *) &cmd->iebuf);
1091         cmd->hdr.size = cpu_to_le16(len);
1092
1093         /* store for later use */
1094         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1095
1096         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1097         if (ret)
1098                 goto done;
1099
1100
1101         /* generate connect message to cfg80211 */
1102
1103         resp = (void *) cmd; /* recast for easier field access */
1104         status = le16_to_cpu(resp->statuscode);
1105
1106         /* Convert statis code of old firmware */
1107         if (priv->fwrelease < 0x09000000)
1108                 switch (status) {
1109                 case 0:
1110                         break;
1111                 case 1:
1112                         lbs_deb_assoc("invalid association parameters\n");
1113                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1114                         break;
1115                 case 2:
1116                         lbs_deb_assoc("timer expired while waiting for AP\n");
1117                         status = WLAN_STATUS_AUTH_TIMEOUT;
1118                         break;
1119                 case 3:
1120                         lbs_deb_assoc("association refused by AP\n");
1121                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1122                         break;
1123                 case 4:
1124                         lbs_deb_assoc("authentication refused by AP\n");
1125                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1126                         break;
1127                 default:
1128                         lbs_deb_assoc("association failure %d\n", status);
1129                         status = WLAN_STATUS_UNSPECIFIED_FAILURE;
1130         }
1131
1132         lbs_deb_assoc("status %d, capability 0x%04x\n", status,
1133                       le16_to_cpu(resp->capability));
1134
1135         resp_ie_len = le16_to_cpu(resp->hdr.size)
1136                 - sizeof(resp->hdr)
1137                 - 6;
1138         cfg80211_connect_result(priv->dev,
1139                                 priv->assoc_bss,
1140                                 sme->ie, sme->ie_len,
1141                                 resp->iebuf, resp_ie_len,
1142                                 status,
1143                                 GFP_KERNEL);
1144
1145         if (status == 0) {
1146                 /* TODO: get rid of priv->connect_status */
1147                 priv->connect_status = LBS_CONNECTED;
1148                 netif_carrier_on(priv->dev);
1149                 if (!priv->tx_pending_len)
1150                         netif_tx_wake_all_queues(priv->dev);
1151         }
1152
1153
1154 done:
1155         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1156         return ret;
1157 }
1158
1159
1160
1161 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1162                            struct cfg80211_connect_params *sme)
1163 {
1164         struct lbs_private *priv = wiphy_priv(wiphy);
1165         struct cfg80211_bss *bss = NULL;
1166         int ret = 0;
1167         u8 preamble = RADIO_PREAMBLE_SHORT;
1168
1169         lbs_deb_enter(LBS_DEB_CFG80211);
1170
1171         if (sme->bssid) {
1172                 bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1173                         sme->ssid, sme->ssid_len,
1174                         WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1175         } else {
1176                 /*
1177                  * Here we have an impedance mismatch. The firmware command
1178                  * CMD_802_11_ASSOCIATE always needs a BSSID, it cannot
1179                  * connect otherwise. However, for the connect-API of
1180                  * cfg80211 the bssid is purely optional. We don't get one,
1181                  * except the user specifies one on the "iw" command line.
1182                  *
1183                  * If we don't got one, we could initiate a scan and look
1184                  * for the best matching cfg80211_bss entry.
1185                  *
1186                  * Or, better yet, net/wireless/sme.c get's rewritten into
1187                  * something more generally useful.
1188                  */
1189                 lbs_pr_err("TODO: no BSS specified\n");
1190                 ret = -ENOTSUPP;
1191                 goto done;
1192         }
1193
1194
1195         if (!bss) {
1196                 lbs_pr_err("assicate: bss %pM not in scan results\n",
1197                            sme->bssid);
1198                 ret = -ENOENT;
1199                 goto done;
1200         }
1201         lbs_deb_assoc("trying %pM", sme->bssid);
1202         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1203                       sme->crypto.cipher_group,
1204                       sme->key_idx, sme->key_len);
1205
1206         /* As this is a new connection, clear locally stored WEP keys */
1207         priv->wep_tx_key = 0;
1208         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1209         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1210
1211         /* set/remove WEP keys */
1212         switch (sme->crypto.cipher_group) {
1213         case WLAN_CIPHER_SUITE_WEP40:
1214         case WLAN_CIPHER_SUITE_WEP104:
1215                 /* Store provided WEP keys in priv-> */
1216                 priv->wep_tx_key = sme->key_idx;
1217                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1218                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1219                 /* Set WEP keys and WEP mode */
1220                 lbs_set_wep_keys(priv);
1221                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1222                 lbs_set_mac_control(priv);
1223                 /* No RSN mode for WEP */
1224                 lbs_enable_rsn(priv, 0);
1225                 break;
1226         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1227                 /*
1228                  * If we don't have no WEP, no WPA and no WPA2,
1229                  * we remove all keys like in the WPA/WPA2 setup,
1230                  * we just don't set RSN.
1231                  *
1232                  * Therefore: fall-throught
1233                  */
1234         case WLAN_CIPHER_SUITE_TKIP:
1235         case WLAN_CIPHER_SUITE_CCMP:
1236                 /* Remove WEP keys and WEP mode */
1237                 lbs_remove_wep_keys(priv);
1238                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1239                 lbs_set_mac_control(priv);
1240
1241                 /* clear the WPA/WPA2 keys */
1242                 lbs_set_key_material(priv,
1243                         KEY_TYPE_ID_WEP, /* doesn't matter */
1244                         KEY_INFO_WPA_UNICAST,
1245                         NULL, 0);
1246                 lbs_set_key_material(priv,
1247                         KEY_TYPE_ID_WEP, /* doesn't matter */
1248                         KEY_INFO_WPA_MCAST,
1249                         NULL, 0);
1250                 /* RSN mode for WPA/WPA2 */
1251                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1252                 break;
1253         default:
1254                 lbs_pr_err("unsupported cipher group 0x%x\n",
1255                            sme->crypto.cipher_group);
1256                 ret = -ENOTSUPP;
1257                 goto done;
1258         }
1259
1260         lbs_set_authtype(priv, sme);
1261         lbs_set_radio(priv, preamble, 1);
1262
1263         /* Do the actual association */
1264         lbs_associate(priv, bss, sme);
1265
1266  done:
1267         if (bss)
1268                 cfg80211_put_bss(bss);
1269         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1270         return ret;
1271 }
1272
1273 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1274         u16 reason_code)
1275 {
1276         struct lbs_private *priv = wiphy_priv(wiphy);
1277         struct cmd_ds_802_11_deauthenticate cmd;
1278
1279         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1280
1281         /* store for lbs_cfg_ret_disconnect() */
1282         priv->disassoc_reason = reason_code;
1283
1284         memset(&cmd, 0, sizeof(cmd));
1285         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1286         /* Mildly ugly to use a locally store my own BSSID ... */
1287         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1288         cmd.reasoncode = cpu_to_le16(reason_code);
1289
1290         if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1291                 return -EFAULT;
1292
1293         cfg80211_disconnected(priv->dev,
1294                         priv->disassoc_reason,
1295                         NULL, 0,
1296                         GFP_KERNEL);
1297         priv->connect_status = LBS_DISCONNECTED;
1298
1299         return 0;
1300 }
1301
1302
1303 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1304                                    struct net_device *netdev,
1305                                    u8 key_index)
1306 {
1307         struct lbs_private *priv = wiphy_priv(wiphy);
1308
1309         lbs_deb_enter(LBS_DEB_CFG80211);
1310
1311         if (key_index != priv->wep_tx_key) {
1312                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1313                 priv->wep_tx_key = key_index;
1314                 lbs_set_wep_keys(priv);
1315         }
1316
1317         return 0;
1318 }
1319
1320
1321 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1322                            u8 idx, const u8 *mac_addr,
1323                            struct key_params *params)
1324 {
1325         struct lbs_private *priv = wiphy_priv(wiphy);
1326         u16 key_info;
1327         u16 key_type;
1328         int ret = 0;
1329
1330         lbs_deb_enter(LBS_DEB_CFG80211);
1331
1332         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1333                       params->cipher, mac_addr);
1334         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1335                       idx, params->key_len);
1336         if (params->key_len)
1337                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1338                             params->key, params->key_len);
1339
1340         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1341         if (params->seq_len)
1342                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1343                             params->seq, params->seq_len);
1344
1345         switch (params->cipher) {
1346         case WLAN_CIPHER_SUITE_WEP40:
1347         case WLAN_CIPHER_SUITE_WEP104:
1348                 /* actually compare if something has changed ... */
1349                 if ((priv->wep_key_len[idx] != params->key_len) ||
1350                         memcmp(priv->wep_key[idx],
1351                                params->key, params->key_len) != 0) {
1352                         priv->wep_key_len[idx] = params->key_len;
1353                         memcpy(priv->wep_key[idx],
1354                                params->key, params->key_len);
1355                         lbs_set_wep_keys(priv);
1356                 }
1357                 break;
1358         case WLAN_CIPHER_SUITE_TKIP:
1359         case WLAN_CIPHER_SUITE_CCMP:
1360                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1361                                                    ? KEY_INFO_WPA_UNICAST
1362                                                    : KEY_INFO_WPA_MCAST);
1363                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1364                         ? KEY_TYPE_ID_TKIP
1365                         : KEY_TYPE_ID_AES;
1366                 lbs_set_key_material(priv,
1367                                      key_type,
1368                                      key_info,
1369                                      params->key, params->key_len);
1370                 break;
1371         default:
1372                 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1373                 ret = -ENOTSUPP;
1374                 break;
1375         }
1376
1377         return ret;
1378 }
1379
1380
1381 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1382                            u8 key_index, const u8 *mac_addr)
1383 {
1384
1385         lbs_deb_enter(LBS_DEB_CFG80211);
1386
1387         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1388                       key_index, mac_addr);
1389
1390 #ifdef TODO
1391         struct lbs_private *priv = wiphy_priv(wiphy);
1392         /*
1393          * I think can keep this a NO-OP, because:
1394
1395          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1396          * - neither "iw" nor "wpa_supplicant" won't call this during
1397          *   an ongoing connection
1398          * - TODO: but I have to check if this is still true when
1399          *   I set the AP to periodic re-keying
1400          * - we've not kzallec() something when we've added a key at
1401          *   lbs_cfg_connect() or lbs_cfg_add_key().
1402          *
1403          * This causes lbs_cfg_del_key() only called at disconnect time,
1404          * where we'd just waste time deleting a key that is not going
1405          * to be used anyway.
1406          */
1407         if (key_index < 3 && priv->wep_key_len[key_index]) {
1408                 priv->wep_key_len[key_index] = 0;
1409                 lbs_set_wep_keys(priv);
1410         }
1411 #endif
1412
1413         return 0;
1414 }
1415
1416
1417 /***************************************************************************
1418  * Get station
1419  */
1420
1421 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1422                               u8 *mac, struct station_info *sinfo)
1423 {
1424         struct lbs_private *priv = wiphy_priv(wiphy);
1425         s8 signal, noise;
1426         int ret;
1427         size_t i;
1428
1429         lbs_deb_enter(LBS_DEB_CFG80211);
1430
1431         sinfo->filled |= STATION_INFO_TX_BYTES |
1432                          STATION_INFO_TX_PACKETS |
1433                          STATION_INFO_RX_BYTES |
1434                          STATION_INFO_RX_PACKETS;
1435         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1436         sinfo->tx_packets = priv->dev->stats.tx_packets;
1437         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1438         sinfo->rx_packets = priv->dev->stats.rx_packets;
1439
1440         /* Get current RSSI */
1441         ret = lbs_get_rssi(priv, &signal, &noise);
1442         if (ret == 0) {
1443                 sinfo->signal = signal;
1444                 sinfo->filled |= STATION_INFO_SIGNAL;
1445         }
1446
1447         /* Convert priv->cur_rate from hw_value to NL80211 value */
1448         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1449                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1450                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1451                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1452                         break;
1453                 }
1454         }
1455
1456         return 0;
1457 }
1458
1459
1460
1461
1462 /***************************************************************************
1463  * "Site survey", here just current channel and noise level
1464  */
1465
1466 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1467         int idx, struct survey_info *survey)
1468 {
1469         struct lbs_private *priv = wiphy_priv(wiphy);
1470         s8 signal, noise;
1471         int ret;
1472
1473         if (idx != 0)
1474                 ret = -ENOENT;
1475
1476         lbs_deb_enter(LBS_DEB_CFG80211);
1477
1478         survey->channel = ieee80211_get_channel(wiphy,
1479                 ieee80211_channel_to_frequency(priv->channel));
1480
1481         ret = lbs_get_rssi(priv, &signal, &noise);
1482         if (ret == 0) {
1483                 survey->filled = SURVEY_INFO_NOISE_DBM;
1484                 survey->noise = noise;
1485         }
1486
1487         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1488         return ret;
1489 }
1490
1491
1492
1493
1494 /***************************************************************************
1495  * Change interface
1496  */
1497
1498 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1499         enum nl80211_iftype type, u32 *flags,
1500                struct vif_params *params)
1501 {
1502         struct lbs_private *priv = wiphy_priv(wiphy);
1503         int ret = 0;
1504
1505         lbs_deb_enter(LBS_DEB_CFG80211);
1506
1507         switch (type) {
1508         case NL80211_IFTYPE_MONITOR:
1509                 ret = lbs_set_monitor_mode(priv, 1);
1510                 break;
1511         case NL80211_IFTYPE_STATION:
1512                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1513                         ret = lbs_set_monitor_mode(priv, 0);
1514                 if (!ret)
1515                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1516                 break;
1517         case NL80211_IFTYPE_ADHOC:
1518                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1519                         ret = lbs_set_monitor_mode(priv, 0);
1520                 if (!ret)
1521                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1522                 break;
1523         default:
1524                 ret = -ENOTSUPP;
1525         }
1526
1527         if (!ret)
1528                 priv->wdev->iftype = type;
1529
1530         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1531         return ret;
1532 }
1533
1534
1535
1536 /***************************************************************************
1537  * IBSS (Ad-Hoc)
1538  */
1539
1540 /* The firmware needs the following bits masked out of the beacon-derived
1541  * capability field when associating/joining to a BSS:
1542  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1543  */
1544 #define CAPINFO_MASK (~(0xda00))
1545
1546
1547 static void lbs_join_post(struct lbs_private *priv,
1548                           struct cfg80211_ibss_params *params,
1549                           u8 *bssid, u16 capability)
1550 {
1551         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1552                    2 + 4 +                      /* basic rates */
1553                    2 + 1 +                      /* DS parameter */
1554                    2 + 2 +                      /* atim */
1555                    2 + 8];                      /* extended rates */
1556         u8 *fake = fake_ie;
1557
1558         lbs_deb_enter(LBS_DEB_CFG80211);
1559
1560         /*
1561          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1562          * the real IE from the firmware. So we fabricate a fake IE based on
1563          * what the firmware actually sends (sniffed with wireshark).
1564          */
1565         /* Fake SSID IE */
1566         *fake++ = WLAN_EID_SSID;
1567         *fake++ = params->ssid_len;
1568         memcpy(fake, params->ssid, params->ssid_len);
1569         fake += params->ssid_len;
1570         /* Fake supported basic rates IE */
1571         *fake++ = WLAN_EID_SUPP_RATES;
1572         *fake++ = 4;
1573         *fake++ = 0x82;
1574         *fake++ = 0x84;
1575         *fake++ = 0x8b;
1576         *fake++ = 0x96;
1577         /* Fake DS channel IE */
1578         *fake++ = WLAN_EID_DS_PARAMS;
1579         *fake++ = 1;
1580         *fake++ = params->channel->hw_value;
1581         /* Fake IBSS params IE */
1582         *fake++ = WLAN_EID_IBSS_PARAMS;
1583         *fake++ = 2;
1584         *fake++ = 0; /* ATIM=0 */
1585         *fake++ = 0;
1586         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1587          * but I don't know how this could be checked */
1588         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1589         *fake++ = 8;
1590         *fake++ = 0x0c;
1591         *fake++ = 0x12;
1592         *fake++ = 0x18;
1593         *fake++ = 0x24;
1594         *fake++ = 0x30;
1595         *fake++ = 0x48;
1596         *fake++ = 0x60;
1597         *fake++ = 0x6c;
1598         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1599
1600         cfg80211_inform_bss(priv->wdev->wiphy,
1601                             params->channel,
1602                             bssid,
1603                             0,
1604                             capability,
1605                             params->beacon_interval,
1606                             fake_ie, fake - fake_ie,
1607                             0, GFP_KERNEL);
1608
1609         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1610         priv->wdev->ssid_len = params->ssid_len;
1611
1612         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1613
1614         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1615         priv->connect_status = LBS_CONNECTED;
1616         netif_carrier_on(priv->dev);
1617         if (!priv->tx_pending_len)
1618                 netif_wake_queue(priv->dev);
1619
1620         lbs_deb_leave(LBS_DEB_CFG80211);
1621 }
1622
1623 static int lbs_ibss_join_existing(struct lbs_private *priv,
1624         struct cfg80211_ibss_params *params,
1625         struct cfg80211_bss *bss)
1626 {
1627         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1628         struct cmd_ds_802_11_ad_hoc_join cmd;
1629         u8 preamble = RADIO_PREAMBLE_SHORT;
1630         int ret = 0;
1631
1632         lbs_deb_enter(LBS_DEB_CFG80211);
1633
1634         /* TODO: set preamble based on scan result */
1635         ret = lbs_set_radio(priv, preamble, 1);
1636         if (ret)
1637                 goto out;
1638
1639         /*
1640          * Example CMD_802_11_AD_HOC_JOIN command:
1641          *
1642          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1643          * size            65 00
1644          * sequence        xx xx
1645          * result          00 00
1646          * bssid           02 27 27 97 2f 96
1647          * ssid            49 42 53 53 00 00 00 00
1648          *                 00 00 00 00 00 00 00 00
1649          *                 00 00 00 00 00 00 00 00
1650          *                 00 00 00 00 00 00 00 00
1651          * type            02            CMD_BSS_TYPE_IBSS
1652          * beacon period   64 00
1653          * dtim period     00
1654          * timestamp       00 00 00 00 00 00 00 00
1655          * localtime       00 00 00 00 00 00 00 00
1656          * IE DS           03
1657          * IE DS len       01
1658          * IE DS channel   01
1659          * reserveed       00 00 00 00
1660          * IE IBSS         06
1661          * IE IBSS len     02
1662          * IE IBSS atim    00 00
1663          * reserved        00 00 00 00
1664          * capability      02 00
1665          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1666          * fail timeout    ff 00
1667          * probe delay     00 00
1668          */
1669         memset(&cmd, 0, sizeof(cmd));
1670         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1671
1672         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1673         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1674         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1675         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1676         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1677         cmd.bss.ds.header.len = 1;
1678         cmd.bss.ds.channel = params->channel->hw_value;
1679         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1680         cmd.bss.ibss.header.len = 2;
1681         cmd.bss.ibss.atimwindow = 0;
1682         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1683
1684         /* set rates to the intersection of our rates and the rates in the
1685            bss */
1686         if (!rates_eid) {
1687                 lbs_add_rates(cmd.bss.rates);
1688         } else {
1689                 int hw, i;
1690                 u8 rates_max = rates_eid[1];
1691                 u8 *rates = cmd.bss.rates;
1692                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1693                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1694                         for (i = 0; i < rates_max; i++) {
1695                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1696                                         u8 rate = rates_eid[i+2];
1697                                         if (rate == 0x02 || rate == 0x04 ||
1698                                             rate == 0x0b || rate == 0x16)
1699                                                 rate |= 0x80;
1700                                         *rates++ = rate;
1701                                 }
1702                         }
1703                 }
1704         }
1705
1706         /* Only v8 and below support setting this */
1707         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1708                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1709                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1710         }
1711         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1712         if (ret)
1713                 goto out;
1714
1715         /*
1716          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1717          *
1718          * response        2c 80
1719          * size            09 00
1720          * sequence        xx xx
1721          * result          00 00
1722          * reserved        00
1723          */
1724         lbs_join_post(priv, params, bss->bssid, bss->capability);
1725
1726  out:
1727         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1728         return ret;
1729 }
1730
1731
1732
1733 static int lbs_ibss_start_new(struct lbs_private *priv,
1734         struct cfg80211_ibss_params *params)
1735 {
1736         struct cmd_ds_802_11_ad_hoc_start cmd;
1737         struct cmd_ds_802_11_ad_hoc_result *resp =
1738                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1739         u8 preamble = RADIO_PREAMBLE_SHORT;
1740         int ret = 0;
1741         u16 capability;
1742
1743         lbs_deb_enter(LBS_DEB_CFG80211);
1744
1745         ret = lbs_set_radio(priv, preamble, 1);
1746         if (ret)
1747                 goto out;
1748
1749         /*
1750          * Example CMD_802_11_AD_HOC_START command:
1751          *
1752          * command         2b 00         CMD_802_11_AD_HOC_START
1753          * size            b1 00
1754          * sequence        xx xx
1755          * result          00 00
1756          * ssid            54 45 53 54 00 00 00 00
1757          *                 00 00 00 00 00 00 00 00
1758          *                 00 00 00 00 00 00 00 00
1759          *                 00 00 00 00 00 00 00 00
1760          * bss type        02
1761          * beacon period   64 00
1762          * dtim period     00
1763          * IE IBSS         06
1764          * IE IBSS len     02
1765          * IE IBSS atim    00 00
1766          * reserved        00 00 00 00
1767          * IE DS           03
1768          * IE DS len       01
1769          * IE DS channel   01
1770          * reserved        00 00 00 00
1771          * probe delay     00 00
1772          * capability      02 00
1773          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1774          *                 0c 12 18 24 30 48 60 6c
1775          * padding         100 bytes
1776          */
1777         memset(&cmd, 0, sizeof(cmd));
1778         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1779         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1780         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1781         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1782         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1783         cmd.ibss.header.len = 2;
1784         cmd.ibss.atimwindow = 0;
1785         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1786         cmd.ds.header.len = 1;
1787         cmd.ds.channel = params->channel->hw_value;
1788         /* Only v8 and below support setting probe delay */
1789         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1790                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1791         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1792         capability = WLAN_CAPABILITY_IBSS;
1793         cmd.capability = cpu_to_le16(capability);
1794         lbs_add_rates(cmd.rates);
1795
1796
1797         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1798         if (ret)
1799                 goto out;
1800
1801         /*
1802          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1803          *
1804          * response        2b 80
1805          * size            14 00
1806          * sequence        xx xx
1807          * result          00 00
1808          * reserved        00
1809          * bssid           02 2b 7b 0f 86 0e
1810          */
1811         lbs_join_post(priv, params, resp->bssid, capability);
1812
1813  out:
1814         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1815         return ret;
1816 }
1817
1818
1819 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1820                 struct cfg80211_ibss_params *params)
1821 {
1822         struct lbs_private *priv = wiphy_priv(wiphy);
1823         int ret = 0;
1824         struct cfg80211_bss *bss;
1825         DECLARE_SSID_BUF(ssid_buf);
1826
1827         lbs_deb_enter(LBS_DEB_CFG80211);
1828
1829         if (!params->channel) {
1830                 ret = -ENOTSUPP;
1831                 goto out;
1832         }
1833
1834         ret = lbs_set_channel(priv, params->channel->hw_value);
1835         if (ret)
1836                 goto out;
1837
1838         /* Search if someone is beaconing. This assumes that the
1839          * bss list is populated already */
1840         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1841                 params->ssid, params->ssid_len,
1842                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1843
1844         if (bss) {
1845                 ret = lbs_ibss_join_existing(priv, params, bss);
1846                 cfg80211_put_bss(bss);
1847         } else
1848                 ret = lbs_ibss_start_new(priv, params);
1849
1850
1851  out:
1852         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1853         return ret;
1854 }
1855
1856
1857 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1858 {
1859         struct lbs_private *priv = wiphy_priv(wiphy);
1860         struct cmd_ds_802_11_ad_hoc_stop cmd;
1861         int ret = 0;
1862
1863         lbs_deb_enter(LBS_DEB_CFG80211);
1864
1865         memset(&cmd, 0, sizeof(cmd));
1866         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1867         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1868
1869         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1870         lbs_mac_event_disconnected(priv);
1871
1872         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1873         return ret;
1874 }
1875
1876
1877
1878
1879 /***************************************************************************
1880  * Initialization
1881  */
1882
1883 static struct cfg80211_ops lbs_cfg80211_ops = {
1884         .set_channel = lbs_cfg_set_channel,
1885         .scan = lbs_cfg_scan,
1886         .connect = lbs_cfg_connect,
1887         .disconnect = lbs_cfg_disconnect,
1888         .add_key = lbs_cfg_add_key,
1889         .del_key = lbs_cfg_del_key,
1890         .set_default_key = lbs_cfg_set_default_key,
1891         .get_station = lbs_cfg_get_station,
1892         .dump_survey = lbs_get_survey,
1893         .change_virtual_intf = lbs_change_intf,
1894         .join_ibss = lbs_join_ibss,
1895         .leave_ibss = lbs_leave_ibss,
1896 };
1897
1898
1899 /*
1900  * At this time lbs_private *priv doesn't even exist, so we just allocate
1901  * memory and don't initialize the wiphy further. This is postponed until we
1902  * can talk to the firmware and happens at registration time in
1903  * lbs_cfg_wiphy_register().
1904  */
1905 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
1906 {
1907         int ret = 0;
1908         struct wireless_dev *wdev;
1909
1910         lbs_deb_enter(LBS_DEB_CFG80211);
1911
1912         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1913         if (!wdev) {
1914                 dev_err(dev, "cannot allocate wireless device\n");
1915                 return ERR_PTR(-ENOMEM);
1916         }
1917
1918         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
1919         if (!wdev->wiphy) {
1920                 dev_err(dev, "cannot allocate wiphy\n");
1921                 ret = -ENOMEM;
1922                 goto err_wiphy_new;
1923         }
1924
1925         lbs_deb_leave(LBS_DEB_CFG80211);
1926         return wdev;
1927
1928  err_wiphy_new:
1929         kfree(wdev);
1930         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1931         return ERR_PTR(ret);
1932 }
1933
1934
1935 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
1936 {
1937         struct region_code_mapping {
1938                 const char *cn;
1939                 int code;
1940         };
1941
1942         /* Section 5.17.2 */
1943         static struct region_code_mapping regmap[] = {
1944                 {"US ", 0x10}, /* US FCC */
1945                 {"CA ", 0x20}, /* Canada */
1946                 {"EU ", 0x30}, /* ETSI   */
1947                 {"ES ", 0x31}, /* Spain  */
1948                 {"FR ", 0x32}, /* France */
1949                 {"JP ", 0x40}, /* Japan  */
1950         };
1951         size_t i;
1952
1953         lbs_deb_enter(LBS_DEB_CFG80211);
1954
1955         for (i = 0; i < ARRAY_SIZE(regmap); i++)
1956                 if (regmap[i].code == priv->regioncode) {
1957                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
1958                         break;
1959                 }
1960
1961         lbs_deb_leave(LBS_DEB_CFG80211);
1962 }
1963
1964
1965 /*
1966  * This function get's called after lbs_setup_firmware() determined the
1967  * firmware capabities. So we can setup the wiphy according to our
1968  * hardware/firmware.
1969  */
1970 int lbs_cfg_register(struct lbs_private *priv)
1971 {
1972         struct wireless_dev *wdev = priv->wdev;
1973         int ret;
1974
1975         lbs_deb_enter(LBS_DEB_CFG80211);
1976
1977         wdev->wiphy->max_scan_ssids = 1;
1978         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1979
1980         wdev->wiphy->interface_modes =
1981                         BIT(NL80211_IFTYPE_STATION) |
1982                         BIT(NL80211_IFTYPE_ADHOC);
1983         if (lbs_rtap_supported(priv))
1984                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1985
1986         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
1987
1988         /*
1989          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
1990          * never seen a firmware without WPA
1991          */
1992         wdev->wiphy->cipher_suites = cipher_suites;
1993         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1994         wdev->wiphy->reg_notifier = lbs_reg_notifier;
1995
1996         ret = wiphy_register(wdev->wiphy);
1997         if (ret < 0)
1998                 lbs_pr_err("cannot register wiphy device\n");
1999
2000         priv->wiphy_registered = true;
2001
2002         ret = register_netdev(priv->dev);
2003         if (ret)
2004                 lbs_pr_err("cannot register network device\n");
2005
2006         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2007
2008         lbs_cfg_set_regulatory_hint(priv);
2009
2010         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2011         return ret;
2012 }
2013
2014 int lbs_reg_notifier(struct wiphy *wiphy,
2015                 struct regulatory_request *request)
2016 {
2017         struct lbs_private *priv = wiphy_priv(wiphy);
2018         int ret;
2019
2020         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2021                         "callback for domain %c%c\n", request->alpha2[0],
2022                         request->alpha2[1]);
2023
2024         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2025
2026         lbs_deb_leave(LBS_DEB_CFG80211);
2027         return ret;
2028 }
2029
2030 void lbs_scan_deinit(struct lbs_private *priv)
2031 {
2032         lbs_deb_enter(LBS_DEB_CFG80211);
2033         cancel_delayed_work_sync(&priv->scan_work);
2034 }
2035
2036
2037 void lbs_cfg_free(struct lbs_private *priv)
2038 {
2039         struct wireless_dev *wdev = priv->wdev;
2040
2041         lbs_deb_enter(LBS_DEB_CFG80211);
2042
2043         if (!wdev)
2044                 return;
2045
2046         if (priv->wiphy_registered)
2047                 wiphy_unregister(wdev->wiphy);
2048
2049         if (wdev->wiphy)
2050                 wiphy_free(wdev->wiphy);
2051
2052         kfree(wdev);
2053 }