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/sched.h>
  13 #include <linux/wait.h>
  14 #include <linux/ieee80211.h>
  15 #include <net/cfg80211.h>
  16 #include <asm/unaligned.h>
  17
  18 #include "decl.h"
  19 #include "cfg.h"
  20 #include "cmd.h"
  21
  22
  23 #define CHAN2G(_channel, _freq, _flags) {        \
  24         .band             = IEEE80211_BAND_2GHZ, \
  25         .center_freq      = (_freq),             \
  26         .hw_value         = (_channel),          \
  27         .flags            = (_flags),            \
  28         .max_antenna_gain = 0,                   \
  29         .max_power        = 30,                  \
  30 }
  31
  32 static struct ieee80211_channel lbs_2ghz_channels[] = {
  33         CHAN2G(1,  2412, 0),
  34         CHAN2G(2,  2417, 0),
  35         CHAN2G(3,  2422, 0),
  36         CHAN2G(4,  2427, 0),
  37         CHAN2G(5,  2432, 0),
  38         CHAN2G(6,  2437, 0),
  39         CHAN2G(7,  2442, 0),
  40         CHAN2G(8,  2447, 0),
  41         CHAN2G(9,  2452, 0),
  42         CHAN2G(10, 2457, 0),
  43         CHAN2G(11, 2462, 0),
  44         CHAN2G(12, 2467, 0),
  45         CHAN2G(13, 2472, 0),
  46         CHAN2G(14, 2484, 0),
  47 };
  48
  49 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  50         .bitrate  = (_rate),                    \
  51         .hw_value = (_hw_value),                \
  52         .flags    = (_flags),                   \
  53 }
  54
  55
  56 /* Table 6 in section 3.2.1.1 */
  57 static struct ieee80211_rate lbs_rates[] = {
  58         RATETAB_ENT(10,  0,  0),
  59         RATETAB_ENT(20,  1,  0),
  60         RATETAB_ENT(55,  2,  0),
  61         RATETAB_ENT(110, 3,  0),
  62         RATETAB_ENT(60,  9,  0),
  63         RATETAB_ENT(90,  6,  0),
  64         RATETAB_ENT(120, 7,  0),
  65         RATETAB_ENT(180, 8,  0),
  66         RATETAB_ENT(240, 9,  0),
  67         RATETAB_ENT(360, 10, 0),
  68         RATETAB_ENT(480, 11, 0),
  69         RATETAB_ENT(540, 12, 0),
  70 };
  71
  72 static struct ieee80211_supported_band lbs_band_2ghz = {
  73         .channels = lbs_2ghz_channels,
  74         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  75         .bitrates = lbs_rates,
  76         .n_bitrates = ARRAY_SIZE(lbs_rates),
  77 };
  78
  79
  80 static const u32 cipher_suites[] = {
  81         WLAN_CIPHER_SUITE_WEP40,
  82         WLAN_CIPHER_SUITE_WEP104,
  83         WLAN_CIPHER_SUITE_TKIP,
  84         WLAN_CIPHER_SUITE_CCMP,
  85 };
  86
  87 /* Time to stay on the channel */
  88 #define LBS_DWELL_PASSIVE 100
  89 #define LBS_DWELL_ACTIVE  40
  90
  91
  92 /***************************************************************************
  93  * Misc utility functions
  94  *
  95  * TLVs are Marvell specific. They are very similar to IEs, they have the
  96  * same structure: type, length, data*. The only difference: for IEs, the
  97  * type and length are u8, but for TLVs they're __le16.
  98  */
  99
 100 /*
 101  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 102  * in the firmware spec
 103  */
 104 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 105 {
 106         int ret = -ENOTSUPP;
 107
 108         switch (auth_type) {
 109         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 110         case NL80211_AUTHTYPE_SHARED_KEY:
 111                 ret = auth_type;
 112                 break;
 113         case NL80211_AUTHTYPE_AUTOMATIC:
 114                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 115                 break;
 116         case NL80211_AUTHTYPE_NETWORK_EAP:
 117                 ret = 0x80;
 118                 break;
 119         default:
 120                 /* silence compiler */
 121                 break;
 122         }
 123         return ret;
 124 }
 125
 126
 127 /* Various firmware commands need the list of supported rates, but with
 128    the hight-bit set for basic rates */
 129 static int lbs_add_rates(u8 *rates)
 130 {
 131         size_t i;
 132
 133         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 134                 u8 rate = lbs_rates[i].bitrate / 5;
 135                 if (rate == 0x02 || rate == 0x04 ||
 136                     rate == 0x0b || rate == 0x16)
 137                         rate |= 0x80;
 138                 rates[i] = rate;
 139         }
 140         return ARRAY_SIZE(lbs_rates);
 141 }
 142
 143
 144 /***************************************************************************
 145  * TLV utility functions
 146  *
 147  * TLVs are Marvell specific. They are very similar to IEs, they have the
 148  * same structure: type, length, data*. The only difference: for IEs, the
 149  * type and length are u8, but for TLVs they're __le16.
 150  */
 151
 152
 153 /*
 154  * Add ssid TLV
 155  */
 156 #define LBS_MAX_SSID_TLV_SIZE                   \
 157         (sizeof(struct mrvl_ie_header)          \
 158          + IEEE80211_MAX_SSID_LEN)
 159
 160 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 161 {
 162         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 163
 164         /*
 165          * TLV-ID SSID  00 00
 166          * length       06 00
 167          * ssid         4d 4e 54 45 53 54
 168          */
 169         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 170         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 171         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 172         return sizeof(ssid_tlv->header) + ssid_len;
 173 }
 174
 175
 176 /*
 177  * Add channel list TLV (section 8.4.2)
 178  *
 179  * Actual channel data comes from priv->wdev->wiphy->channels.
 180  */
 181 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 182         (sizeof(struct mrvl_ie_header)                                  \
 183          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 184
 185 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 186                                     int last_channel, int active_scan)
 187 {
 188         int chanscanparamsize = sizeof(struct chanscanparamset) *
 189                 (last_channel - priv->scan_channel);
 190
 191         struct mrvl_ie_header *header = (void *) tlv;
 192
 193         /*
 194          * TLV-ID CHANLIST  01 01
 195          * length           0e 00
 196          * channel          00 01 00 00 00 64 00
 197          *   radio type     00
 198          *   channel           01
 199          *   scan type            00
 200          *   min scan time           00 00
 201          *   max scan time                 64 00
 202          * channel 2        00 02 00 00 00 64 00
 203          *
 204          */
 205
 206         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 207         header->len  = cpu_to_le16(chanscanparamsize);
 208         tlv += sizeof(struct mrvl_ie_header);
 209
 210         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 211                      last_channel); */
 212         memset(tlv, 0, chanscanparamsize);
 213
 214         while (priv->scan_channel < last_channel) {
 215                 struct chanscanparamset *param = (void *) tlv;
 216
 217                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 218                 param->channumber =
 219                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 220                 if (active_scan) {
 221                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 222                 } else {
 223                         param->chanscanmode.passivescan = 1;
 224                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 225                 }
 226                 tlv += sizeof(struct chanscanparamset);
 227                 priv->scan_channel++;
 228         }
 229         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 230 }
 231
 232
 233 /*
 234  * Add rates TLV
 235  *
 236  * The rates are in lbs_bg_rates[], but for the 802.11b
 237  * rates the high bit is set. We add this TLV only because
 238  * there's a firmware which otherwise doesn't report all
 239  * APs in range.
 240  */
 241 #define LBS_MAX_RATES_TLV_SIZE                  \
 242         (sizeof(struct mrvl_ie_header)          \
 243          + (ARRAY_SIZE(lbs_rates)))
 244
 245 /* Adds a TLV with all rates the hardware supports */
 246 static int lbs_add_supported_rates_tlv(u8 *tlv)
 247 {
 248         size_t i;
 249         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 250
 251         /*
 252          * TLV-ID RATES  01 00
 253          * length        0e 00
 254          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 255          */
 256         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 257         tlv += sizeof(rate_tlv->header);
 258         i = lbs_add_rates(tlv);
 259         tlv += i;
 260         rate_tlv->header.len = cpu_to_le16(i);
 261         return sizeof(rate_tlv->header) + i;
 262 }
 263
 264 /* Add common rates from a TLV and return the new end of the TLV */
 265 static u8 *
 266 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 267 {
 268         int hw, ap, ap_max = ie[1];
 269         u8 hw_rate;
 270
 271         /* Advance past IE header */
 272         ie += 2;
 273
 274         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 275
 276         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 277                 hw_rate = lbs_rates[hw].bitrate / 5;
 278                 for (ap = 0; ap < ap_max; ap++) {
 279                         if (hw_rate == (ie[ap] & 0x7f)) {
 280                                 *tlv++ = ie[ap];
 281                                 *nrates = *nrates + 1;
 282                         }
 283                 }
 284         }
 285         return tlv;
 286 }
 287
 288 /*
 289  * Adds a TLV with all rates the hardware *and* BSS supports.
 290  */
 291 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 292 {
 293         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 294         const u8 *rates_eid, *ext_rates_eid;
 295         int n = 0;
 296
 297         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 298         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 299
 300         /*
 301          * 01 00                   TLV_TYPE_RATES
 302          * 04 00                   len
 303          * 82 84 8b 96             rates
 304          */
 305         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 306         tlv += sizeof(rate_tlv->header);
 307
 308         /* Add basic rates */
 309         if (rates_eid) {
 310                 tlv = add_ie_rates(tlv, rates_eid, &n);
 311
 312                 /* Add extended rates, if any */
 313                 if (ext_rates_eid)
 314                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 315         } else {
 316                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 317                 /* Fallback: add basic 802.11b rates */
 318                 *tlv++ = 0x82;
 319                 *tlv++ = 0x84;
 320                 *tlv++ = 0x8b;
 321                 *tlv++ = 0x96;
 322                 n = 4;
 323         }
 324
 325         rate_tlv->header.len = cpu_to_le16(n);
 326         return sizeof(rate_tlv->header) + n;
 327 }
 328
 329
 330 /*
 331  * Add auth type TLV.
 332  *
 333  * This is only needed for newer firmware (V9 and up).
 334  */
 335 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 336         sizeof(struct mrvl_ie_auth_type)
 337
 338 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 339 {
 340         struct mrvl_ie_auth_type *auth = (void *) tlv;
 341
 342         /*
 343          * 1f 01  TLV_TYPE_AUTH_TYPE
 344          * 01 00  len
 345          * 01     auth type
 346          */
 347         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 348         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 349         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 350         return sizeof(*auth);
 351 }
 352
 353
 354 /*
 355  * Add channel (phy ds) TLV
 356  */
 357 #define LBS_MAX_CHANNEL_TLV_SIZE \
 358         sizeof(struct mrvl_ie_header)
 359
 360 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 361 {
 362         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 363
 364         /*
 365          * 03 00  TLV_TYPE_PHY_DS
 366          * 01 00  len
 367          * 06     channel
 368          */
 369         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 370         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 371         ds->channel = channel;
 372         return sizeof(*ds);
 373 }
 374
 375
 376 /*
 377  * Add (empty) CF param TLV of the form:
 378  */
 379 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 380         sizeof(struct mrvl_ie_header)
 381
 382 static int lbs_add_cf_param_tlv(u8 *tlv)
 383 {
 384         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 385
 386         /*
 387          * 04 00  TLV_TYPE_CF
 388          * 06 00  len
 389          * 00     cfpcnt
 390          * 00     cfpperiod
 391          * 00 00  cfpmaxduration
 392          * 00 00  cfpdurationremaining
 393          */
 394         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 395         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 396         return sizeof(*cf);
 397 }
 398
 399 /*
 400  * Add WPA TLV
 401  */
 402 #define LBS_MAX_WPA_TLV_SIZE                    \
 403         (sizeof(struct mrvl_ie_header)          \
 404          + 128 /* TODO: I guessed the size */)
 405
 406 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 407 {
 408         size_t tlv_len;
 409
 410         /*
 411          * We need just convert an IE to an TLV. IEs use u8 for the header,
 412          *   u8      type
 413          *   u8      len
 414          *   u8[]    data
 415          * but TLVs use __le16 instead:
 416          *   __le16  type
 417          *   __le16  len
 418          *   u8[]    data
 419          */
 420         *tlv++ = *ie++;
 421         *tlv++ = 0;
 422         tlv_len = *tlv++ = *ie++;
 423         *tlv++ = 0;
 424         while (tlv_len--)
 425                 *tlv++ = *ie++;
 426         /* the TLV is two bytes larger than the IE */
 427         return ie_len + 2;
 428 }
 429
 430 /***************************************************************************
 431  * Set Channel
 432  */
 433
 434 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 435         struct net_device *netdev,
 436         struct ieee80211_channel *channel,
 437         enum nl80211_channel_type channel_type)
 438 {
 439         struct lbs_private *priv = wiphy_priv(wiphy);
 440         int ret = -ENOTSUPP;
 441
 442         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 443                            channel->center_freq, channel_type);
 444
 445         if (channel_type != NL80211_CHAN_NO_HT)
 446                 goto out;
 447
 448         ret = lbs_set_channel(priv, channel->hw_value);
 449
 450  out:
 451         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 452         return ret;
 453 }
 454
 455
 456
 457 /***************************************************************************
 458  * Scanning
 459  */
 460
 461 /*
 462  * When scanning, the firmware doesn't send a nul packet with the power-safe
 463  * bit to the AP. So we cannot stay away from our current channel too long,
 464  * otherwise we loose data. So take a "nap" while scanning every other
 465  * while.
 466  */
 467 #define LBS_SCAN_BEFORE_NAP 4
 468
 469
 470 /*
 471  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 472  * which isn't really an RSSI, as it becomes larger when moving away from
 473  * the AP. Anyway, we need to convert that into mBm.
 474  */
 475 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 476         ((-(int)rssi + 3)*100)
 477
 478 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 479         struct cmd_header *resp)
 480 {
 481         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 482         int bsssize;
 483         const u8 *pos;
 484         const u8 *tsfdesc;
 485         int tsfsize;
 486         int i;
 487         int ret = -EILSEQ;
 488
 489         lbs_deb_enter(LBS_DEB_CFG80211);
 490
 491         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 492
 493         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 494                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 495
 496         if (scanresp->nr_sets == 0) {
 497                 ret = 0;
 498                 goto done;
 499         }
 500
 501         /*
 502          * The general layout of the scan response is described in chapter
 503          * 5.7.1. Basically we have a common part, then any number of BSS
 504          * descriptor sections. Finally we have section with the same number
 505          * of TSFs.
 506          *
 507          * cmd_ds_802_11_scan_rsp
 508          *   cmd_header
 509          *   pos_size
 510          *   nr_sets
 511          *   bssdesc 1
 512          *     bssid
 513          *     rssi
 514          *     timestamp
 515          *     intvl
 516          *     capa
 517          *     IEs
 518          *   bssdesc 2
 519          *   bssdesc n
 520          *   MrvlIEtypes_TsfFimestamp_t
 521          *     TSF for BSS 1
 522          *     TSF for BSS 2
 523          *     TSF for BSS n
 524          */
 525
 526         pos = scanresp->bssdesc_and_tlvbuffer;
 527
 528         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 529                         scanresp->bssdescriptsize);
 530
 531         tsfdesc = pos + bsssize;
 532         tsfsize = 4 + 8 * scanresp->nr_sets;
 533         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 534
 535         /* Validity check: we expect a Marvell-Local TLV */
 536         i = get_unaligned_le16(tsfdesc);
 537         tsfdesc += 2;
 538         if (i != TLV_TYPE_TSFTIMESTAMP) {
 539                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 540                 goto done;
 541         }
 542
 543         /* Validity check: the TLV holds TSF values with 8 bytes each, so
 544          * the size in the TLV must match the nr_sets value */
 545         i = get_unaligned_le16(tsfdesc);
 546         tsfdesc += 2;
 547         if (i / 8 != scanresp->nr_sets) {
 548                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 549                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 550                              i / 8);
 551                 goto done;
 552         }
 553
 554         for (i = 0; i < scanresp->nr_sets; i++) {
 555                 const u8 *bssid;
 556                 const u8 *ie;
 557                 int left;
 558                 int ielen;
 559                 int rssi;
 560                 u16 intvl;
 561                 u16 capa;
 562                 int chan_no = -1;
 563                 const u8 *ssid = NULL;
 564                 u8 ssid_len = 0;
 565                 DECLARE_SSID_BUF(ssid_buf);
 566
 567                 int len = get_unaligned_le16(pos);
 568                 pos += 2;
 569
 570                 /* BSSID */
 571                 bssid = pos;
 572                 pos += ETH_ALEN;
 573                 /* RSSI */
 574                 rssi = *pos++;
 575                 /* Packet time stamp */
 576                 pos += 8;
 577                 /* Beacon interval */
 578                 intvl = get_unaligned_le16(pos);
 579                 pos += 2;
 580                 /* Capabilities */
 581                 capa = get_unaligned_le16(pos);
 582                 pos += 2;
 583
 584                 /* To find out the channel, we must parse the IEs */
 585                 ie = pos;
 586                 /* 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 587                    interval, capabilities */
 588                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 589                 while (left >= 2) {
 590                         u8 id, elen;
 591                         id = *pos++;
 592                         elen = *pos++;
 593                         left -= 2;
 594                         if (elen > left || elen == 0) {
 595                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 596                                 goto done;
 597                         }
 598
 599                         if (id == WLAN_EID_DS_PARAMS)
 600                                 chan_no = *pos;
 601                         if (id == WLAN_EID_SSID) {
 602                                 ssid = pos;
 603                                 ssid_len = elen;
 604                         }
 605                         left -= elen;
 606                         pos += elen;
 607                 }
 608
 609                 /* No channel, no luck */
 610                 if (chan_no != -1) {
 611                         struct wiphy *wiphy = priv->wdev->wiphy;
 612                         int freq = ieee80211_channel_to_frequency(chan_no);
 613                         struct ieee80211_channel *channel =
 614                                 ieee80211_get_channel(wiphy, freq);
 615
 616                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 617                                      "%d dBm\n",
 618                                      bssid, capa, chan_no,
 619                                      print_ssid(ssid_buf, ssid, ssid_len),
 620                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 621
 622                         if (channel ||
 623                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 624                                 cfg80211_inform_bss(wiphy, channel,
 625                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 626                                         capa, intvl, ie, ielen,
 627                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 628                                         GFP_KERNEL);
 629                 } else
 630                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 631
 632                 tsfdesc += 8;
 633         }
 634         ret = 0;
 635
 636  done:
 637         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 638         return ret;
 639 }
 640
 641
 642 /*
 643  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 644  * TLV and a rates TLV. Determine the maximum size of them:
 645  */
 646 #define LBS_SCAN_MAX_CMD_SIZE                   \
 647         (sizeof(struct cmd_ds_802_11_scan)      \
 648          + LBS_MAX_SSID_TLV_SIZE                \
 649          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 650          + LBS_MAX_RATES_TLV_SIZE)
 651
 652 /*
 653  * Assumes priv->scan_req is initialized and valid
 654  * Assumes priv->scan_channel is initialized
 655  */
 656 static void lbs_scan_worker(struct work_struct *work)
 657 {
 658         struct lbs_private *priv =
 659                 container_of(work, struct lbs_private, scan_work.work);
 660         struct cmd_ds_802_11_scan *scan_cmd;
 661         u8 *tlv; /* pointer into our current, growing TLV storage area */
 662         int last_channel;
 663         int running, carrier;
 664
 665         lbs_deb_enter(LBS_DEB_SCAN);
 666
 667         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 668         if (scan_cmd == NULL)
 669                 goto out_no_scan_cmd;
 670
 671         /* prepare fixed part of scan command */
 672         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 673
 674         /* stop network while we're away from our main channel */
 675         running = !netif_queue_stopped(priv->dev);
 676         carrier = netif_carrier_ok(priv->dev);
 677         if (running)
 678                 netif_stop_queue(priv->dev);
 679         if (carrier)
 680                 netif_carrier_off(priv->dev);
 681
 682         /* prepare fixed part of scan command */
 683         tlv = scan_cmd->tlvbuffer;
 684
 685         /* add SSID TLV */
 686         if (priv->scan_req->n_ssids)
 687                 tlv += lbs_add_ssid_tlv(tlv,
 688                                         priv->scan_req->ssids[0].ssid,
 689                                         priv->scan_req->ssids[0].ssid_len);
 690
 691         /* add channel TLVs */
 692         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 693         if (last_channel > priv->scan_req->n_channels)
 694                 last_channel = priv->scan_req->n_channels;
 695         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 696                 priv->scan_req->n_ssids);
 697
 698         /* add rates TLV */
 699         tlv += lbs_add_supported_rates_tlv(tlv);
 700
 701         if (priv->scan_channel < priv->scan_req->n_channels) {
 702                 cancel_delayed_work(&priv->scan_work);
 703                 if (!priv->stopping)
 704                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 705                                 msecs_to_jiffies(300));
 706         }
 707
 708         /* This is the final data we are about to send */
 709         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 710         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 711                     sizeof(*scan_cmd));
 712         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 713                     tlv - scan_cmd->tlvbuffer);
 714
 715         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 716                 le16_to_cpu(scan_cmd->hdr.size),
 717                 lbs_ret_scan, 0);
 718
 719         if (priv->scan_channel >= priv->scan_req->n_channels) {
 720                 /* Mark scan done */
 721                 if (priv->internal_scan)
 722                         kfree(priv->scan_req);
 723                 else
 724                         cfg80211_scan_done(priv->scan_req, false);
 725
 726                 priv->scan_req = NULL;
 727                 priv->last_scan = jiffies;
 728         }
 729
 730         /* Restart network */
 731         if (carrier)
 732                 netif_carrier_on(priv->dev);
 733         if (running && !priv->tx_pending_len)
 734                 netif_wake_queue(priv->dev);
 735
 736         kfree(scan_cmd);
 737
 738         /* Wake up anything waiting on scan completion */
 739         if (priv->scan_req == NULL) {
 740                 lbs_deb_scan("scan: waking up waiters\n");
 741                 wake_up_all(&priv->scan_q);
 742         }
 743
 744  out_no_scan_cmd:
 745         lbs_deb_leave(LBS_DEB_SCAN);
 746 }
 747
 748 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 749         struct cfg80211_scan_request *request)
 750 {
 751         lbs_deb_enter(LBS_DEB_CFG80211);
 752
 753         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 754                 request->n_ssids, request->n_channels, request->ie_len);
 755
 756         priv->scan_channel = 0;
 757         queue_delayed_work(priv->work_thread, &priv->scan_work,
 758                 msecs_to_jiffies(50));
 759
 760         priv->scan_req = request;
 761         priv->internal_scan = internal;
 762
 763         lbs_deb_leave(LBS_DEB_CFG80211);
 764 }
 765
 766 static int lbs_cfg_scan(struct wiphy *wiphy,
 767         struct net_device *dev,
 768         struct cfg80211_scan_request *request)
 769 {
 770         struct lbs_private *priv = wiphy_priv(wiphy);
 771         int ret = 0;
 772
 773         lbs_deb_enter(LBS_DEB_CFG80211);
 774
 775         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 776                 /* old scan request not yet processed */
 777                 ret = -EAGAIN;
 778                 goto out;
 779         }
 780
 781         _internal_start_scan(priv, false, request);
 782
 783         if (priv->surpriseremoved)
 784                 ret = -EIO;
 785
 786  out:
 787         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 788         return ret;
 789 }
 790
 791
 792
 793
 794 /***************************************************************************
 795  * Events
 796  */
 797
 798 void lbs_send_disconnect_notification(struct lbs_private *priv)
 799 {
 800         lbs_deb_enter(LBS_DEB_CFG80211);
 801
 802         cfg80211_disconnected(priv->dev,
 803                 0,
 804                 NULL, 0,
 805                 GFP_KERNEL);
 806
 807         lbs_deb_leave(LBS_DEB_CFG80211);
 808 }
 809
 810 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 811 {
 812         lbs_deb_enter(LBS_DEB_CFG80211);
 813
 814         cfg80211_michael_mic_failure(priv->dev,
 815                 priv->assoc_bss,
 816                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 817                         NL80211_KEYTYPE_GROUP :
 818                         NL80211_KEYTYPE_PAIRWISE,
 819                 -1,
 820                 NULL,
 821                 GFP_KERNEL);
 822
 823         lbs_deb_leave(LBS_DEB_CFG80211);
 824 }
 825
 826
 827
 828
 829 /***************************************************************************
 830  * Connect/disconnect
 831  */
 832
 833
 834 /*
 835  * This removes all WEP keys
 836  */
 837 static int lbs_remove_wep_keys(struct lbs_private *priv)
 838 {
 839         struct cmd_ds_802_11_set_wep cmd;
 840         int ret;
 841
 842         lbs_deb_enter(LBS_DEB_CFG80211);
 843
 844         memset(&cmd, 0, sizeof(cmd));
 845         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 846         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 847         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 848
 849         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 850
 851         lbs_deb_leave(LBS_DEB_CFG80211);
 852         return ret;
 853 }
 854
 855 /*
 856  * Set WEP keys
 857  */
 858 static int lbs_set_wep_keys(struct lbs_private *priv)
 859 {
 860         struct cmd_ds_802_11_set_wep cmd;
 861         int i;
 862         int ret;
 863
 864         lbs_deb_enter(LBS_DEB_CFG80211);
 865
 866         /*
 867          * command         13 00
 868          * size            50 00
 869          * sequence        xx xx
 870          * result          00 00
 871          * action          02 00     ACT_ADD
 872          * transmit key    00 00
 873          * type for key 1  01        WEP40
 874          * type for key 2  00
 875          * type for key 3  00
 876          * type for key 4  00
 877          * key 1           39 39 39 39 39 00 00 00
 878          *                 00 00 00 00 00 00 00 00
 879          * key 2           00 00 00 00 00 00 00 00
 880          *                 00 00 00 00 00 00 00 00
 881          * key 3           00 00 00 00 00 00 00 00
 882          *                 00 00 00 00 00 00 00 00
 883          * key 4           00 00 00 00 00 00 00 00
 884          */
 885         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 886             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 887                 /* Only set wep keys if we have at least one of them */
 888                 memset(&cmd, 0, sizeof(cmd));
 889                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 890                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 891                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 892
 893                 for (i = 0; i < 4; i++) {
 894                         switch (priv->wep_key_len[i]) {
 895                         case WLAN_KEY_LEN_WEP40:
 896                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 897                                 break;
 898                         case WLAN_KEY_LEN_WEP104:
 899                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 900                                 break;
 901                         default:
 902                                 cmd.keytype[i] = 0;
 903                                 break;
 904                         }
 905                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 906                                priv->wep_key_len[i]);
 907                 }
 908
 909                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 910         } else {
 911                 /* Otherwise remove all wep keys */
 912                 ret = lbs_remove_wep_keys(priv);
 913         }
 914
 915         lbs_deb_leave(LBS_DEB_CFG80211);
 916         return ret;
 917 }
 918
 919
 920 /*
 921  * Enable/Disable RSN status
 922  */
 923 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 924 {
 925         struct cmd_ds_802_11_enable_rsn cmd;
 926         int ret;
 927
 928         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 929
 930         /*
 931          * cmd       2f 00
 932          * size      0c 00
 933          * sequence  xx xx
 934          * result    00 00
 935          * action    01 00    ACT_SET
 936          * enable    01 00
 937          */
 938         memset(&cmd, 0, sizeof(cmd));
 939         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 940         cmd.action = cpu_to_le16(CMD_ACT_SET);
 941         cmd.enable = cpu_to_le16(enable);
 942
 943         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 944
 945         lbs_deb_leave(LBS_DEB_CFG80211);
 946         return ret;
 947 }
 948
 949
 950 /*
 951  * Set WPA/WPA key material
 952  */
 953
 954 /* like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 955  * get rid of WEXT, this should go into host.h */
 956
 957 struct cmd_key_material {
 958         struct cmd_header hdr;
 959
 960         __le16 action;
 961         struct MrvlIEtype_keyParamSet param;
 962 } __packed;
 963
 964 static int lbs_set_key_material(struct lbs_private *priv,
 965                                 int key_type,
 966                                 int key_info,
 967                                 u8 *key, u16 key_len)
 968 {
 969         struct cmd_key_material cmd;
 970         int ret;
 971
 972         lbs_deb_enter(LBS_DEB_CFG80211);
 973
 974         /*
 975          * Example for WPA (TKIP):
 976          *
 977          * cmd       5e 00
 978          * size      34 00
 979          * sequence  xx xx
 980          * result    00 00
 981          * action    01 00
 982          * TLV type  00 01    key param
 983          * length    00 26
 984          * key type  01 00    TKIP
 985          * key info  06 00    UNICAST | ENABLED
 986          * key len   20 00
 987          * key       32 bytes
 988          */
 989         memset(&cmd, 0, sizeof(cmd));
 990         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 991         cmd.action = cpu_to_le16(CMD_ACT_SET);
 992         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
 993         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
 994         cmd.param.keytypeid = cpu_to_le16(key_type);
 995         cmd.param.keyinfo = cpu_to_le16(key_info);
 996         cmd.param.keylen = cpu_to_le16(key_len);
 997         if (key && key_len)
 998                 memcpy(cmd.param.key, key, key_len);
 999
1000         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1001
1002         lbs_deb_leave(LBS_DEB_CFG80211);
1003         return ret;
1004 }
1005
1006
1007 /*
1008  * Sets the auth type (open, shared, etc) in the firmware. That
1009  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1010  * command doesn't send an authentication frame at all, it just
1011  * stores the auth_type.
1012  */
1013 static int lbs_set_authtype(struct lbs_private *priv,
1014                             struct cfg80211_connect_params *sme)
1015 {
1016         struct cmd_ds_802_11_authenticate cmd;
1017         int ret;
1018
1019         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1020
1021         /*
1022          * cmd        11 00
1023          * size       19 00
1024          * sequence   xx xx
1025          * result     00 00
1026          * BSS id     00 13 19 80 da 30
1027          * auth type  00
1028          * reserved   00 00 00 00 00 00 00 00 00 00
1029          */
1030         memset(&cmd, 0, sizeof(cmd));
1031         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1032         if (sme->bssid)
1033                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1034         /* convert auth_type */
1035         ret = lbs_auth_to_authtype(sme->auth_type);
1036         if (ret < 0)
1037                 goto done;
1038
1039         cmd.authtype = ret;
1040         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1041
1042  done:
1043         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1044         return ret;
1045 }
1046
1047
1048 /*
1049  * Create association request
1050  */
1051 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1052         (sizeof(struct cmd_ds_802_11_associate)    \
1053          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1054          + LBS_MAX_SSID_TLV_SIZE                   \
1055          + LBS_MAX_CHANNEL_TLV_SIZE                \
1056          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1057          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1058          + LBS_MAX_WPA_TLV_SIZE)
1059
1060 static int lbs_associate(struct lbs_private *priv,
1061                 struct cfg80211_bss *bss,
1062                 struct cfg80211_connect_params *sme)
1063 {
1064         struct cmd_ds_802_11_associate_response *resp;
1065         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1066                                                       GFP_KERNEL);
1067         const u8 *ssid_eid;
1068         size_t len, resp_ie_len;
1069         int status;
1070         int ret;
1071         u8 *pos = &(cmd->iebuf[0]);
1072         u8 *tmp;
1073
1074         lbs_deb_enter(LBS_DEB_CFG80211);
1075
1076         if (!cmd) {
1077                 ret = -ENOMEM;
1078                 goto done;
1079         }
1080
1081         /*
1082          * cmd              50 00
1083          * length           34 00
1084          * sequence         xx xx
1085          * result           00 00
1086          * BSS id           00 13 19 80 da 30
1087          * capabilities     11 00
1088          * listen interval  0a 00
1089          * beacon interval  00 00
1090          * DTIM period      00
1091          * TLVs             xx   (up to 512 bytes)
1092          */
1093         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1094
1095         /* Fill in static fields */
1096         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1097         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1098         cmd->capability = cpu_to_le16(bss->capability);
1099
1100         /* add SSID TLV */
1101         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1102         if (ssid_eid)
1103                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1104         else
1105                 lbs_deb_assoc("no SSID\n");
1106
1107         /* add DS param TLV */
1108         if (bss->channel)
1109                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1110         else
1111                 lbs_deb_assoc("no channel\n");
1112
1113         /* add (empty) CF param TLV */
1114         pos += lbs_add_cf_param_tlv(pos);
1115
1116         /* add rates TLV */
1117         tmp = pos + 4; /* skip Marvell IE header */
1118         pos += lbs_add_common_rates_tlv(pos, bss);
1119         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1120
1121         /* add auth type TLV */
1122         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1123                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1124
1125         /* add WPA/WPA2 TLV */
1126         if (sme->ie && sme->ie_len)
1127                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1128
1129         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1130                 (u16)(pos - (u8 *) &cmd->iebuf);
1131         cmd->hdr.size = cpu_to_le16(len);
1132
1133         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1134                         le16_to_cpu(cmd->hdr.size));
1135
1136         /* store for later use */
1137         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1138
1139         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1140         if (ret)
1141                 goto done;
1142
1143         /* generate connect message to cfg80211 */
1144
1145         resp = (void *) cmd; /* recast for easier field access */
1146         status = le16_to_cpu(resp->statuscode);
1147
1148         /* Older FW versions map the IEEE 802.11 Status Code in the association
1149          * response to the following values returned in resp->statuscode:
1150          *
1151          *    IEEE Status Code                Marvell Status Code
1152          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1153          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1154          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1155          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1156          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1157          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1158          *
1159          * Other response codes:
1160          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1161          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1162          *                                    association response from the AP)
1163          */
1164         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1165                 switch (status) {
1166                 case 0:
1167                         break;
1168                 case 1:
1169                         lbs_deb_assoc("invalid association parameters\n");
1170                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1171                         break;
1172                 case 2:
1173                         lbs_deb_assoc("timer expired while waiting for AP\n");
1174                         status = WLAN_STATUS_AUTH_TIMEOUT;
1175                         break;
1176                 case 3:
1177                         lbs_deb_assoc("association refused by AP\n");
1178                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1179                         break;
1180                 case 4:
1181                         lbs_deb_assoc("authentication refused by AP\n");
1182                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1183                         break;
1184                 default:
1185                         lbs_deb_assoc("association failure %d\n", status);
1186                         /* v5 OLPC firmware does return the AP status code if
1187                          * it's not one of the values above.  Let that through.
1188                          */
1189                         break;
1190                 }
1191         }
1192
1193         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1194                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1195                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1196
1197         resp_ie_len = le16_to_cpu(resp->hdr.size)
1198                 - sizeof(resp->hdr)
1199                 - 6;
1200         cfg80211_connect_result(priv->dev,
1201                                 priv->assoc_bss,
1202                                 sme->ie, sme->ie_len,
1203                                 resp->iebuf, resp_ie_len,
1204                                 status,
1205                                 GFP_KERNEL);
1206
1207         if (status == 0) {
1208                 /* TODO: get rid of priv->connect_status */
1209                 priv->connect_status = LBS_CONNECTED;
1210                 netif_carrier_on(priv->dev);
1211                 if (!priv->tx_pending_len)
1212                         netif_tx_wake_all_queues(priv->dev);
1213         }
1214
1215 done:
1216         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1217         return ret;
1218 }
1219
1220 static struct cfg80211_scan_request *
1221 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1222 {
1223         struct cfg80211_scan_request *creq = NULL;
1224         int i, n_channels = 0;
1225         enum ieee80211_band band;
1226
1227         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1228                 if (wiphy->bands[band])
1229                         n_channels += wiphy->bands[band]->n_channels;
1230         }
1231
1232         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1233                        n_channels * sizeof(void *),
1234                        GFP_ATOMIC);
1235         if (!creq)
1236                 return NULL;
1237
1238         /* SSIDs come after channels */
1239         creq->ssids = (void *)&creq->channels[n_channels];
1240         creq->n_channels = n_channels;
1241         creq->n_ssids = 1;
1242
1243         /* Scan all available channels */
1244         i = 0;
1245         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1246                 int j;
1247
1248                 if (!wiphy->bands[band])
1249                         continue;
1250
1251                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1252                         /* ignore disabled channels */
1253                         if (wiphy->bands[band]->channels[j].flags &
1254                                                 IEEE80211_CHAN_DISABLED)
1255                                 continue;
1256
1257                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1258                         i++;
1259                 }
1260         }
1261         if (i) {
1262                 /* Set real number of channels specified in creq->channels[] */
1263                 creq->n_channels = i;
1264
1265                 /* Scan for the SSID we're going to connect to */
1266                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1267                 creq->ssids[0].ssid_len = sme->ssid_len;
1268         } else {
1269                 /* No channels found... */
1270                 kfree(creq);
1271                 creq = NULL;
1272         }
1273
1274         return creq;
1275 }
1276
1277 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1278                            struct cfg80211_connect_params *sme)
1279 {
1280         struct lbs_private *priv = wiphy_priv(wiphy);
1281         struct cfg80211_bss *bss = NULL;
1282         int ret = 0;
1283         u8 preamble = RADIO_PREAMBLE_SHORT;
1284
1285         lbs_deb_enter(LBS_DEB_CFG80211);
1286
1287         if (!sme->bssid) {
1288                 /* Run a scan if one isn't in-progress already and if the last
1289                  * scan was done more than 2 seconds ago.
1290                  */
1291                 if (priv->scan_req == NULL &&
1292                     time_after(jiffies, priv->last_scan + (2 * HZ))) {
1293                         struct cfg80211_scan_request *creq;
1294
1295                         creq = _new_connect_scan_req(wiphy, sme);
1296                         if (!creq) {
1297                                 ret = -EINVAL;
1298                                 goto done;
1299                         }
1300
1301                         lbs_deb_assoc("assoc: scanning for compatible AP\n");
1302                         _internal_start_scan(priv, true, creq);
1303                 }
1304
1305                 /* Wait for any in-progress scan to complete */
1306                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1307                 wait_event_interruptible_timeout(priv->scan_q,
1308                                                  (priv->scan_req == NULL),
1309                                                  (15 * HZ));
1310                 lbs_deb_assoc("assoc: scanning competed\n");
1311         }
1312
1313         /* Find the BSS we want using available scan results */
1314         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1315                 sme->ssid, sme->ssid_len,
1316                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1317         if (!bss) {
1318                 lbs_pr_err("assoc: bss %pM not in scan results\n",
1319                            sme->bssid);
1320                 ret = -ENOENT;
1321                 goto done;
1322         }
1323         lbs_deb_assoc("trying %pM\n", bss->bssid);
1324         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1325                       sme->crypto.cipher_group,
1326                       sme->key_idx, sme->key_len);
1327
1328         /* As this is a new connection, clear locally stored WEP keys */
1329         priv->wep_tx_key = 0;
1330         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1331         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1332
1333         /* set/remove WEP keys */
1334         switch (sme->crypto.cipher_group) {
1335         case WLAN_CIPHER_SUITE_WEP40:
1336         case WLAN_CIPHER_SUITE_WEP104:
1337                 /* Store provided WEP keys in priv-> */
1338                 priv->wep_tx_key = sme->key_idx;
1339                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1340                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1341                 /* Set WEP keys and WEP mode */
1342                 lbs_set_wep_keys(priv);
1343                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1344                 lbs_set_mac_control(priv);
1345                 /* No RSN mode for WEP */
1346                 lbs_enable_rsn(priv, 0);
1347                 break;
1348         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1349                 /*
1350                  * If we don't have no WEP, no WPA and no WPA2,
1351                  * we remove all keys like in the WPA/WPA2 setup,
1352                  * we just don't set RSN.
1353                  *
1354                  * Therefore: fall-throught
1355                  */
1356         case WLAN_CIPHER_SUITE_TKIP:
1357         case WLAN_CIPHER_SUITE_CCMP:
1358                 /* Remove WEP keys and WEP mode */
1359                 lbs_remove_wep_keys(priv);
1360                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1361                 lbs_set_mac_control(priv);
1362
1363                 /* clear the WPA/WPA2 keys */
1364                 lbs_set_key_material(priv,
1365                         KEY_TYPE_ID_WEP, /* doesn't matter */
1366                         KEY_INFO_WPA_UNICAST,
1367                         NULL, 0);
1368                 lbs_set_key_material(priv,
1369                         KEY_TYPE_ID_WEP, /* doesn't matter */
1370                         KEY_INFO_WPA_MCAST,
1371                         NULL, 0);
1372                 /* RSN mode for WPA/WPA2 */
1373                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1374                 break;
1375         default:
1376                 lbs_pr_err("unsupported cipher group 0x%x\n",
1377                            sme->crypto.cipher_group);
1378                 ret = -ENOTSUPP;
1379                 goto done;
1380         }
1381
1382         lbs_set_authtype(priv, sme);
1383         lbs_set_radio(priv, preamble, 1);
1384
1385         /* Do the actual association */
1386         ret = lbs_associate(priv, bss, sme);
1387
1388  done:
1389         if (bss)
1390                 cfg80211_put_bss(bss);
1391         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1392         return ret;
1393 }
1394
1395 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1396         u16 reason_code)
1397 {
1398         struct lbs_private *priv = wiphy_priv(wiphy);
1399         struct cmd_ds_802_11_deauthenticate cmd;
1400
1401         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1402
1403         /* store for lbs_cfg_ret_disconnect() */
1404         priv->disassoc_reason = reason_code;
1405
1406         memset(&cmd, 0, sizeof(cmd));
1407         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1408         /* Mildly ugly to use a locally store my own BSSID ... */
1409         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1410         cmd.reasoncode = cpu_to_le16(reason_code);
1411
1412         if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1413                 return -EFAULT;
1414
1415         cfg80211_disconnected(priv->dev,
1416                         priv->disassoc_reason,
1417                         NULL, 0,
1418                         GFP_KERNEL);
1419         priv->connect_status = LBS_DISCONNECTED;
1420
1421         return 0;
1422 }
1423
1424
1425 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1426                                    struct net_device *netdev,
1427                                    u8 key_index)
1428 {
1429         struct lbs_private *priv = wiphy_priv(wiphy);
1430
1431         lbs_deb_enter(LBS_DEB_CFG80211);
1432
1433         if (key_index != priv->wep_tx_key) {
1434                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1435                 priv->wep_tx_key = key_index;
1436                 lbs_set_wep_keys(priv);
1437         }
1438
1439         return 0;
1440 }
1441
1442
1443 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1444                            u8 idx, bool pairwise, const u8 *mac_addr,
1445                            struct key_params *params)
1446 {
1447         struct lbs_private *priv = wiphy_priv(wiphy);
1448         u16 key_info;
1449         u16 key_type;
1450         int ret = 0;
1451
1452         lbs_deb_enter(LBS_DEB_CFG80211);
1453
1454         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1455                       params->cipher, mac_addr);
1456         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1457                       idx, params->key_len);
1458         if (params->key_len)
1459                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1460                             params->key, params->key_len);
1461
1462         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1463         if (params->seq_len)
1464                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1465                             params->seq, params->seq_len);
1466
1467         switch (params->cipher) {
1468         case WLAN_CIPHER_SUITE_WEP40:
1469         case WLAN_CIPHER_SUITE_WEP104:
1470                 /* actually compare if something has changed ... */
1471                 if ((priv->wep_key_len[idx] != params->key_len) ||
1472                         memcmp(priv->wep_key[idx],
1473                                params->key, params->key_len) != 0) {
1474                         priv->wep_key_len[idx] = params->key_len;
1475                         memcpy(priv->wep_key[idx],
1476                                params->key, params->key_len);
1477                         lbs_set_wep_keys(priv);
1478                 }
1479                 break;
1480         case WLAN_CIPHER_SUITE_TKIP:
1481         case WLAN_CIPHER_SUITE_CCMP:
1482                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1483                                                    ? KEY_INFO_WPA_UNICAST
1484                                                    : KEY_INFO_WPA_MCAST);
1485                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1486                         ? KEY_TYPE_ID_TKIP
1487                         : KEY_TYPE_ID_AES;
1488                 lbs_set_key_material(priv,
1489                                      key_type,
1490                                      key_info,
1491                                      params->key, params->key_len);
1492                 break;
1493         default:
1494                 lbs_pr_err("unhandled cipher 0x%x\n", params->cipher);
1495                 ret = -ENOTSUPP;
1496                 break;
1497         }
1498
1499         return ret;
1500 }
1501
1502
1503 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1504                            u8 key_index, bool pairwise, const u8 *mac_addr)
1505 {
1506
1507         lbs_deb_enter(LBS_DEB_CFG80211);
1508
1509         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1510                       key_index, mac_addr);
1511
1512 #ifdef TODO
1513         struct lbs_private *priv = wiphy_priv(wiphy);
1514         /*
1515          * I think can keep this a NO-OP, because:
1516
1517          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1518          * - neither "iw" nor "wpa_supplicant" won't call this during
1519          *   an ongoing connection
1520          * - TODO: but I have to check if this is still true when
1521          *   I set the AP to periodic re-keying
1522          * - we've not kzallec() something when we've added a key at
1523          *   lbs_cfg_connect() or lbs_cfg_add_key().
1524          *
1525          * This causes lbs_cfg_del_key() only called at disconnect time,
1526          * where we'd just waste time deleting a key that is not going
1527          * to be used anyway.
1528          */
1529         if (key_index < 3 && priv->wep_key_len[key_index]) {
1530                 priv->wep_key_len[key_index] = 0;
1531                 lbs_set_wep_keys(priv);
1532         }
1533 #endif
1534
1535         return 0;
1536 }
1537
1538
1539 /***************************************************************************
1540  * Get station
1541  */
1542
1543 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1544                               u8 *mac, struct station_info *sinfo)
1545 {
1546         struct lbs_private *priv = wiphy_priv(wiphy);
1547         s8 signal, noise;
1548         int ret;
1549         size_t i;
1550
1551         lbs_deb_enter(LBS_DEB_CFG80211);
1552
1553         sinfo->filled |= STATION_INFO_TX_BYTES |
1554                          STATION_INFO_TX_PACKETS |
1555                          STATION_INFO_RX_BYTES |
1556                          STATION_INFO_RX_PACKETS;
1557         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1558         sinfo->tx_packets = priv->dev->stats.tx_packets;
1559         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1560         sinfo->rx_packets = priv->dev->stats.rx_packets;
1561
1562         /* Get current RSSI */
1563         ret = lbs_get_rssi(priv, &signal, &noise);
1564         if (ret == 0) {
1565                 sinfo->signal = signal;
1566                 sinfo->filled |= STATION_INFO_SIGNAL;
1567         }
1568
1569         /* Convert priv->cur_rate from hw_value to NL80211 value */
1570         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1571                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1572                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1573                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1574                         break;
1575                 }
1576         }
1577
1578         return 0;
1579 }
1580
1581
1582
1583
1584 /***************************************************************************
1585  * "Site survey", here just current channel and noise level
1586  */
1587
1588 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1589         int idx, struct survey_info *survey)
1590 {
1591         struct lbs_private *priv = wiphy_priv(wiphy);
1592         s8 signal, noise;
1593         int ret;
1594
1595         if (idx != 0)
1596                 ret = -ENOENT;
1597
1598         lbs_deb_enter(LBS_DEB_CFG80211);
1599
1600         survey->channel = ieee80211_get_channel(wiphy,
1601                 ieee80211_channel_to_frequency(priv->channel));
1602
1603         ret = lbs_get_rssi(priv, &signal, &noise);
1604         if (ret == 0) {
1605                 survey->filled = SURVEY_INFO_NOISE_DBM;
1606                 survey->noise = noise;
1607         }
1608
1609         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1610         return ret;
1611 }
1612
1613
1614
1615
1616 /***************************************************************************
1617  * Change interface
1618  */
1619
1620 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1621         enum nl80211_iftype type, u32 *flags,
1622                struct vif_params *params)
1623 {
1624         struct lbs_private *priv = wiphy_priv(wiphy);
1625         int ret = 0;
1626
1627         lbs_deb_enter(LBS_DEB_CFG80211);
1628
1629         switch (type) {
1630         case NL80211_IFTYPE_MONITOR:
1631                 ret = lbs_set_monitor_mode(priv, 1);
1632                 break;
1633         case NL80211_IFTYPE_STATION:
1634                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1635                         ret = lbs_set_monitor_mode(priv, 0);
1636                 if (!ret)
1637                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1638                 break;
1639         case NL80211_IFTYPE_ADHOC:
1640                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1641                         ret = lbs_set_monitor_mode(priv, 0);
1642                 if (!ret)
1643                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1644                 break;
1645         default:
1646                 ret = -ENOTSUPP;
1647         }
1648
1649         if (!ret)
1650                 priv->wdev->iftype = type;
1651
1652         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1653         return ret;
1654 }
1655
1656
1657
1658 /***************************************************************************
1659  * IBSS (Ad-Hoc)
1660  */
1661
1662 /* The firmware needs the following bits masked out of the beacon-derived
1663  * capability field when associating/joining to a BSS:
1664  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1665  */
1666 #define CAPINFO_MASK (~(0xda00))
1667
1668
1669 static void lbs_join_post(struct lbs_private *priv,
1670                           struct cfg80211_ibss_params *params,
1671                           u8 *bssid, u16 capability)
1672 {
1673         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1674                    2 + 4 +                      /* basic rates */
1675                    2 + 1 +                      /* DS parameter */
1676                    2 + 2 +                      /* atim */
1677                    2 + 8];                      /* extended rates */
1678         u8 *fake = fake_ie;
1679
1680         lbs_deb_enter(LBS_DEB_CFG80211);
1681
1682         /*
1683          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1684          * the real IE from the firmware. So we fabricate a fake IE based on
1685          * what the firmware actually sends (sniffed with wireshark).
1686          */
1687         /* Fake SSID IE */
1688         *fake++ = WLAN_EID_SSID;
1689         *fake++ = params->ssid_len;
1690         memcpy(fake, params->ssid, params->ssid_len);
1691         fake += params->ssid_len;
1692         /* Fake supported basic rates IE */
1693         *fake++ = WLAN_EID_SUPP_RATES;
1694         *fake++ = 4;
1695         *fake++ = 0x82;
1696         *fake++ = 0x84;
1697         *fake++ = 0x8b;
1698         *fake++ = 0x96;
1699         /* Fake DS channel IE */
1700         *fake++ = WLAN_EID_DS_PARAMS;
1701         *fake++ = 1;
1702         *fake++ = params->channel->hw_value;
1703         /* Fake IBSS params IE */
1704         *fake++ = WLAN_EID_IBSS_PARAMS;
1705         *fake++ = 2;
1706         *fake++ = 0; /* ATIM=0 */
1707         *fake++ = 0;
1708         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1709          * but I don't know how this could be checked */
1710         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1711         *fake++ = 8;
1712         *fake++ = 0x0c;
1713         *fake++ = 0x12;
1714         *fake++ = 0x18;
1715         *fake++ = 0x24;
1716         *fake++ = 0x30;
1717         *fake++ = 0x48;
1718         *fake++ = 0x60;
1719         *fake++ = 0x6c;
1720         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1721
1722         cfg80211_inform_bss(priv->wdev->wiphy,
1723                             params->channel,
1724                             bssid,
1725                             0,
1726                             capability,
1727                             params->beacon_interval,
1728                             fake_ie, fake - fake_ie,
1729                             0, GFP_KERNEL);
1730
1731         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1732         priv->wdev->ssid_len = params->ssid_len;
1733
1734         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1735
1736         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1737         priv->connect_status = LBS_CONNECTED;
1738         netif_carrier_on(priv->dev);
1739         if (!priv->tx_pending_len)
1740                 netif_wake_queue(priv->dev);
1741
1742         lbs_deb_leave(LBS_DEB_CFG80211);
1743 }
1744
1745 static int lbs_ibss_join_existing(struct lbs_private *priv,
1746         struct cfg80211_ibss_params *params,
1747         struct cfg80211_bss *bss)
1748 {
1749         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1750         struct cmd_ds_802_11_ad_hoc_join cmd;
1751         u8 preamble = RADIO_PREAMBLE_SHORT;
1752         int ret = 0;
1753
1754         lbs_deb_enter(LBS_DEB_CFG80211);
1755
1756         /* TODO: set preamble based on scan result */
1757         ret = lbs_set_radio(priv, preamble, 1);
1758         if (ret)
1759                 goto out;
1760
1761         /*
1762          * Example CMD_802_11_AD_HOC_JOIN command:
1763          *
1764          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1765          * size            65 00
1766          * sequence        xx xx
1767          * result          00 00
1768          * bssid           02 27 27 97 2f 96
1769          * ssid            49 42 53 53 00 00 00 00
1770          *                 00 00 00 00 00 00 00 00
1771          *                 00 00 00 00 00 00 00 00
1772          *                 00 00 00 00 00 00 00 00
1773          * type            02            CMD_BSS_TYPE_IBSS
1774          * beacon period   64 00
1775          * dtim period     00
1776          * timestamp       00 00 00 00 00 00 00 00
1777          * localtime       00 00 00 00 00 00 00 00
1778          * IE DS           03
1779          * IE DS len       01
1780          * IE DS channel   01
1781          * reserveed       00 00 00 00
1782          * IE IBSS         06
1783          * IE IBSS len     02
1784          * IE IBSS atim    00 00
1785          * reserved        00 00 00 00
1786          * capability      02 00
1787          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1788          * fail timeout    ff 00
1789          * probe delay     00 00
1790          */
1791         memset(&cmd, 0, sizeof(cmd));
1792         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1793
1794         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1795         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1796         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1797         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1798         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1799         cmd.bss.ds.header.len = 1;
1800         cmd.bss.ds.channel = params->channel->hw_value;
1801         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1802         cmd.bss.ibss.header.len = 2;
1803         cmd.bss.ibss.atimwindow = 0;
1804         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1805
1806         /* set rates to the intersection of our rates and the rates in the
1807            bss */
1808         if (!rates_eid) {
1809                 lbs_add_rates(cmd.bss.rates);
1810         } else {
1811                 int hw, i;
1812                 u8 rates_max = rates_eid[1];
1813                 u8 *rates = cmd.bss.rates;
1814                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1815                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1816                         for (i = 0; i < rates_max; i++) {
1817                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1818                                         u8 rate = rates_eid[i+2];
1819                                         if (rate == 0x02 || rate == 0x04 ||
1820                                             rate == 0x0b || rate == 0x16)
1821                                                 rate |= 0x80;
1822                                         *rates++ = rate;
1823                                 }
1824                         }
1825                 }
1826         }
1827
1828         /* Only v8 and below support setting this */
1829         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1830                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1831                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1832         }
1833         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1834         if (ret)
1835                 goto out;
1836
1837         /*
1838          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1839          *
1840          * response        2c 80
1841          * size            09 00
1842          * sequence        xx xx
1843          * result          00 00
1844          * reserved        00
1845          */
1846         lbs_join_post(priv, params, bss->bssid, bss->capability);
1847
1848  out:
1849         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1850         return ret;
1851 }
1852
1853
1854
1855 static int lbs_ibss_start_new(struct lbs_private *priv,
1856         struct cfg80211_ibss_params *params)
1857 {
1858         struct cmd_ds_802_11_ad_hoc_start cmd;
1859         struct cmd_ds_802_11_ad_hoc_result *resp =
1860                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1861         u8 preamble = RADIO_PREAMBLE_SHORT;
1862         int ret = 0;
1863         u16 capability;
1864
1865         lbs_deb_enter(LBS_DEB_CFG80211);
1866
1867         ret = lbs_set_radio(priv, preamble, 1);
1868         if (ret)
1869                 goto out;
1870
1871         /*
1872          * Example CMD_802_11_AD_HOC_START command:
1873          *
1874          * command         2b 00         CMD_802_11_AD_HOC_START
1875          * size            b1 00
1876          * sequence        xx xx
1877          * result          00 00
1878          * ssid            54 45 53 54 00 00 00 00
1879          *                 00 00 00 00 00 00 00 00
1880          *                 00 00 00 00 00 00 00 00
1881          *                 00 00 00 00 00 00 00 00
1882          * bss type        02
1883          * beacon period   64 00
1884          * dtim period     00
1885          * IE IBSS         06
1886          * IE IBSS len     02
1887          * IE IBSS atim    00 00
1888          * reserved        00 00 00 00
1889          * IE DS           03
1890          * IE DS len       01
1891          * IE DS channel   01
1892          * reserved        00 00 00 00
1893          * probe delay     00 00
1894          * capability      02 00
1895          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1896          *                 0c 12 18 24 30 48 60 6c
1897          * padding         100 bytes
1898          */
1899         memset(&cmd, 0, sizeof(cmd));
1900         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1901         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1902         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1903         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1904         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1905         cmd.ibss.header.len = 2;
1906         cmd.ibss.atimwindow = 0;
1907         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1908         cmd.ds.header.len = 1;
1909         cmd.ds.channel = params->channel->hw_value;
1910         /* Only v8 and below support setting probe delay */
1911         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1912                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1913         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1914         capability = WLAN_CAPABILITY_IBSS;
1915         cmd.capability = cpu_to_le16(capability);
1916         lbs_add_rates(cmd.rates);
1917
1918
1919         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1920         if (ret)
1921                 goto out;
1922
1923         /*
1924          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1925          *
1926          * response        2b 80
1927          * size            14 00
1928          * sequence        xx xx
1929          * result          00 00
1930          * reserved        00
1931          * bssid           02 2b 7b 0f 86 0e
1932          */
1933         lbs_join_post(priv, params, resp->bssid, capability);
1934
1935  out:
1936         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1937         return ret;
1938 }
1939
1940
1941 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1942                 struct cfg80211_ibss_params *params)
1943 {
1944         struct lbs_private *priv = wiphy_priv(wiphy);
1945         int ret = 0;
1946         struct cfg80211_bss *bss;
1947         DECLARE_SSID_BUF(ssid_buf);
1948
1949         lbs_deb_enter(LBS_DEB_CFG80211);
1950
1951         if (!params->channel) {
1952                 ret = -ENOTSUPP;
1953                 goto out;
1954         }
1955
1956         ret = lbs_set_channel(priv, params->channel->hw_value);
1957         if (ret)
1958                 goto out;
1959
1960         /* Search if someone is beaconing. This assumes that the
1961          * bss list is populated already */
1962         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1963                 params->ssid, params->ssid_len,
1964                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1965
1966         if (bss) {
1967                 ret = lbs_ibss_join_existing(priv, params, bss);
1968                 cfg80211_put_bss(bss);
1969         } else
1970                 ret = lbs_ibss_start_new(priv, params);
1971
1972
1973  out:
1974         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1975         return ret;
1976 }
1977
1978
1979 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1980 {
1981         struct lbs_private *priv = wiphy_priv(wiphy);
1982         struct cmd_ds_802_11_ad_hoc_stop cmd;
1983         int ret = 0;
1984
1985         lbs_deb_enter(LBS_DEB_CFG80211);
1986
1987         memset(&cmd, 0, sizeof(cmd));
1988         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1989         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1990
1991         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1992         lbs_mac_event_disconnected(priv);
1993
1994         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1995         return ret;
1996 }
1997
1998
1999
2000
2001 /***************************************************************************
2002  * Initialization
2003  */
2004
2005 static struct cfg80211_ops lbs_cfg80211_ops = {
2006         .set_channel = lbs_cfg_set_channel,
2007         .scan = lbs_cfg_scan,
2008         .connect = lbs_cfg_connect,
2009         .disconnect = lbs_cfg_disconnect,
2010         .add_key = lbs_cfg_add_key,
2011         .del_key = lbs_cfg_del_key,
2012         .set_default_key = lbs_cfg_set_default_key,
2013         .get_station = lbs_cfg_get_station,
2014         .dump_survey = lbs_get_survey,
2015         .change_virtual_intf = lbs_change_intf,
2016         .join_ibss = lbs_join_ibss,
2017         .leave_ibss = lbs_leave_ibss,
2018 };
2019
2020
2021 /*
2022  * At this time lbs_private *priv doesn't even exist, so we just allocate
2023  * memory and don't initialize the wiphy further. This is postponed until we
2024  * can talk to the firmware and happens at registration time in
2025  * lbs_cfg_wiphy_register().
2026  */
2027 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2028 {
2029         int ret = 0;
2030         struct wireless_dev *wdev;
2031
2032         lbs_deb_enter(LBS_DEB_CFG80211);
2033
2034         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2035         if (!wdev) {
2036                 dev_err(dev, "cannot allocate wireless device\n");
2037                 return ERR_PTR(-ENOMEM);
2038         }
2039
2040         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2041         if (!wdev->wiphy) {
2042                 dev_err(dev, "cannot allocate wiphy\n");
2043                 ret = -ENOMEM;
2044                 goto err_wiphy_new;
2045         }
2046
2047         lbs_deb_leave(LBS_DEB_CFG80211);
2048         return wdev;
2049
2050  err_wiphy_new:
2051         kfree(wdev);
2052         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2053         return ERR_PTR(ret);
2054 }
2055
2056
2057 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2058 {
2059         struct region_code_mapping {
2060                 const char *cn;
2061                 int code;
2062         };
2063
2064         /* Section 5.17.2 */
2065         static struct region_code_mapping regmap[] = {
2066                 {"US ", 0x10}, /* US FCC */
2067                 {"CA ", 0x20}, /* Canada */
2068                 {"EU ", 0x30}, /* ETSI   */
2069                 {"ES ", 0x31}, /* Spain  */
2070                 {"FR ", 0x32}, /* France */
2071                 {"JP ", 0x40}, /* Japan  */
2072         };
2073         size_t i;
2074
2075         lbs_deb_enter(LBS_DEB_CFG80211);
2076
2077         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2078                 if (regmap[i].code == priv->regioncode) {
2079                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2080                         break;
2081                 }
2082
2083         lbs_deb_leave(LBS_DEB_CFG80211);
2084 }
2085
2086
2087 /*
2088  * This function get's called after lbs_setup_firmware() determined the
2089  * firmware capabities. So we can setup the wiphy according to our
2090  * hardware/firmware.
2091  */
2092 int lbs_cfg_register(struct lbs_private *priv)
2093 {
2094         struct wireless_dev *wdev = priv->wdev;
2095         int ret;
2096
2097         lbs_deb_enter(LBS_DEB_CFG80211);
2098
2099         wdev->wiphy->max_scan_ssids = 1;
2100         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2101
2102         wdev->wiphy->interface_modes =
2103                         BIT(NL80211_IFTYPE_STATION) |
2104                         BIT(NL80211_IFTYPE_ADHOC);
2105         if (lbs_rtap_supported(priv))
2106                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2107
2108         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2109
2110         /*
2111          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2112          * never seen a firmware without WPA
2113          */
2114         wdev->wiphy->cipher_suites = cipher_suites;
2115         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2116         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2117
2118         ret = wiphy_register(wdev->wiphy);
2119         if (ret < 0)
2120                 lbs_pr_err("cannot register wiphy device\n");
2121
2122         priv->wiphy_registered = true;
2123
2124         ret = register_netdev(priv->dev);
2125         if (ret)
2126                 lbs_pr_err("cannot register network device\n");
2127
2128         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2129
2130         lbs_cfg_set_regulatory_hint(priv);
2131
2132         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2133         return ret;
2134 }
2135
2136 int lbs_reg_notifier(struct wiphy *wiphy,
2137                 struct regulatory_request *request)
2138 {
2139         struct lbs_private *priv = wiphy_priv(wiphy);
2140         int ret;
2141
2142         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2143                         "callback for domain %c%c\n", request->alpha2[0],
2144                         request->alpha2[1]);
2145
2146         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2147
2148         lbs_deb_leave(LBS_DEB_CFG80211);
2149         return ret;
2150 }
2151
2152 void lbs_scan_deinit(struct lbs_private *priv)
2153 {
2154         lbs_deb_enter(LBS_DEB_CFG80211);
2155         cancel_delayed_work_sync(&priv->scan_work);
2156 }
2157
2158
2159 void lbs_cfg_free(struct lbs_private *priv)
2160 {
2161         struct wireless_dev *wdev = priv->wdev;
2162
2163         lbs_deb_enter(LBS_DEB_CFG80211);
2164
2165         if (!wdev)
2166                 return;
2167
2168         if (priv->wiphy_registered)
2169                 wiphy_unregister(wdev->wiphy);
2170
2171         if (wdev->wiphy)
2172                 wiphy_free(wdev->wiphy);
2173
2174         kfree(wdev);
2175 }