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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  10
  11 #include <linux/hardirq.h>
  12 #include <linux/sched.h>
  13 #include <linux/wait.h>
  14 #include <linux/slab.h>
  15 #include <linux/ieee80211.h>
  16 #include <net/cfg80211.h>
  17 #include <asm/unaligned.h>
  18
  19 #include "decl.h"
  20 #include "cfg.h"
  21 #include "cmd.h"
  22 #include "mesh.h"
  23
  24
  25 #define CHAN2G(_channel, _freq, _flags) {        \
  26         .band             = IEEE80211_BAND_2GHZ, \
  27         .center_freq      = (_freq),             \
  28         .hw_value         = (_channel),          \
  29         .flags            = (_flags),            \
  30         .max_antenna_gain = 0,                   \
  31         .max_power        = 30,                  \
  32 }
  33
  34 static struct ieee80211_channel lbs_2ghz_channels[] = {
  35         CHAN2G(1,  2412, 0),
  36         CHAN2G(2,  2417, 0),
  37         CHAN2G(3,  2422, 0),
  38         CHAN2G(4,  2427, 0),
  39         CHAN2G(5,  2432, 0),
  40         CHAN2G(6,  2437, 0),
  41         CHAN2G(7,  2442, 0),
  42         CHAN2G(8,  2447, 0),
  43         CHAN2G(9,  2452, 0),
  44         CHAN2G(10, 2457, 0),
  45         CHAN2G(11, 2462, 0),
  46         CHAN2G(12, 2467, 0),
  47         CHAN2G(13, 2472, 0),
  48         CHAN2G(14, 2484, 0),
  49 };
  50
  51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  52         .bitrate  = (_rate),                    \
  53         .hw_value = (_hw_value),                \
  54         .flags    = (_flags),                   \
  55 }
  56
  57
  58 /* Table 6 in section 3.2.1.1 */
  59 static struct ieee80211_rate lbs_rates[] = {
  60         RATETAB_ENT(10,  0,  0),
  61         RATETAB_ENT(20,  1,  0),
  62         RATETAB_ENT(55,  2,  0),
  63         RATETAB_ENT(110, 3,  0),
  64         RATETAB_ENT(60,  9,  0),
  65         RATETAB_ENT(90,  6,  0),
  66         RATETAB_ENT(120, 7,  0),
  67         RATETAB_ENT(180, 8,  0),
  68         RATETAB_ENT(240, 9,  0),
  69         RATETAB_ENT(360, 10, 0),
  70         RATETAB_ENT(480, 11, 0),
  71         RATETAB_ENT(540, 12, 0),
  72 };
  73
  74 static struct ieee80211_supported_band lbs_band_2ghz = {
  75         .channels = lbs_2ghz_channels,
  76         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  77         .bitrates = lbs_rates,
  78         .n_bitrates = ARRAY_SIZE(lbs_rates),
  79 };
  80
  81
  82 static const u32 cipher_suites[] = {
  83         WLAN_CIPHER_SUITE_WEP40,
  84         WLAN_CIPHER_SUITE_WEP104,
  85         WLAN_CIPHER_SUITE_TKIP,
  86         WLAN_CIPHER_SUITE_CCMP,
  87 };
  88
  89 /* Time to stay on the channel */
  90 #define LBS_DWELL_PASSIVE 100
  91 #define LBS_DWELL_ACTIVE  40
  92
  93
  94 /***************************************************************************
  95  * Misc utility functions
  96  *
  97  * TLVs are Marvell specific. They are very similar to IEs, they have the
  98  * same structure: type, length, data*. The only difference: for IEs, the
  99  * type and length are u8, but for TLVs they're __le16.
 100  */
 101
 102 /*
 103  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 104  * in the firmware spec
 105  */
 106 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 107 {
 108         int ret = -ENOTSUPP;
 109
 110         switch (auth_type) {
 111         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 112         case NL80211_AUTHTYPE_SHARED_KEY:
 113                 ret = auth_type;
 114                 break;
 115         case NL80211_AUTHTYPE_AUTOMATIC:
 116                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 117                 break;
 118         case NL80211_AUTHTYPE_NETWORK_EAP:
 119                 ret = 0x80;
 120                 break;
 121         default:
 122                 /* silence compiler */
 123                 break;
 124         }
 125         return ret;
 126 }
 127
 128
 129 /*
 130  * Various firmware commands need the list of supported rates, but with
 131  * the hight-bit set for basic rates
 132  */
 133 static int lbs_add_rates(u8 *rates)
 134 {
 135         size_t i;
 136
 137         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 138                 u8 rate = lbs_rates[i].bitrate / 5;
 139                 if (rate == 0x02 || rate == 0x04 ||
 140                     rate == 0x0b || rate == 0x16)
 141                         rate |= 0x80;
 142                 rates[i] = rate;
 143         }
 144         return ARRAY_SIZE(lbs_rates);
 145 }
 146
 147
 148 /***************************************************************************
 149  * TLV utility functions
 150  *
 151  * TLVs are Marvell specific. They are very similar to IEs, they have the
 152  * same structure: type, length, data*. The only difference: for IEs, the
 153  * type and length are u8, but for TLVs they're __le16.
 154  */
 155
 156
 157 /*
 158  * Add ssid TLV
 159  */
 160 #define LBS_MAX_SSID_TLV_SIZE                   \
 161         (sizeof(struct mrvl_ie_header)          \
 162          + IEEE80211_MAX_SSID_LEN)
 163
 164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 165 {
 166         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 167
 168         /*
 169          * TLV-ID SSID  00 00
 170          * length       06 00
 171          * ssid         4d 4e 54 45 53 54
 172          */
 173         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 174         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 175         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 176         return sizeof(ssid_tlv->header) + ssid_len;
 177 }
 178
 179
 180 /*
 181  * Add channel list TLV (section 8.4.2)
 182  *
 183  * Actual channel data comes from priv->wdev->wiphy->channels.
 184  */
 185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 186         (sizeof(struct mrvl_ie_header)                                  \
 187          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 188
 189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 190                                     int last_channel, int active_scan)
 191 {
 192         int chanscanparamsize = sizeof(struct chanscanparamset) *
 193                 (last_channel - priv->scan_channel);
 194
 195         struct mrvl_ie_header *header = (void *) tlv;
 196
 197         /*
 198          * TLV-ID CHANLIST  01 01
 199          * length           0e 00
 200          * channel          00 01 00 00 00 64 00
 201          *   radio type     00
 202          *   channel           01
 203          *   scan type            00
 204          *   min scan time           00 00
 205          *   max scan time                 64 00
 206          * channel 2        00 02 00 00 00 64 00
 207          *
 208          */
 209
 210         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 211         header->len  = cpu_to_le16(chanscanparamsize);
 212         tlv += sizeof(struct mrvl_ie_header);
 213
 214         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 215                      last_channel); */
 216         memset(tlv, 0, chanscanparamsize);
 217
 218         while (priv->scan_channel < last_channel) {
 219                 struct chanscanparamset *param = (void *) tlv;
 220
 221                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 222                 param->channumber =
 223                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 224                 if (active_scan) {
 225                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 226                 } else {
 227                         param->chanscanmode.passivescan = 1;
 228                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 229                 }
 230                 tlv += sizeof(struct chanscanparamset);
 231                 priv->scan_channel++;
 232         }
 233         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 234 }
 235
 236
 237 /*
 238  * Add rates TLV
 239  *
 240  * The rates are in lbs_bg_rates[], but for the 802.11b
 241  * rates the high bit is set. We add this TLV only because
 242  * there's a firmware which otherwise doesn't report all
 243  * APs in range.
 244  */
 245 #define LBS_MAX_RATES_TLV_SIZE                  \
 246         (sizeof(struct mrvl_ie_header)          \
 247          + (ARRAY_SIZE(lbs_rates)))
 248
 249 /* Adds a TLV with all rates the hardware supports */
 250 static int lbs_add_supported_rates_tlv(u8 *tlv)
 251 {
 252         size_t i;
 253         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 254
 255         /*
 256          * TLV-ID RATES  01 00
 257          * length        0e 00
 258          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 259          */
 260         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 261         tlv += sizeof(rate_tlv->header);
 262         i = lbs_add_rates(tlv);
 263         tlv += i;
 264         rate_tlv->header.len = cpu_to_le16(i);
 265         return sizeof(rate_tlv->header) + i;
 266 }
 267
 268 /* Add common rates from a TLV and return the new end of the TLV */
 269 static u8 *
 270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 271 {
 272         int hw, ap, ap_max = ie[1];
 273         u8 hw_rate;
 274
 275         /* Advance past IE header */
 276         ie += 2;
 277
 278         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 279
 280         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 281                 hw_rate = lbs_rates[hw].bitrate / 5;
 282                 for (ap = 0; ap < ap_max; ap++) {
 283                         if (hw_rate == (ie[ap] & 0x7f)) {
 284                                 *tlv++ = ie[ap];
 285                                 *nrates = *nrates + 1;
 286                         }
 287                 }
 288         }
 289         return tlv;
 290 }
 291
 292 /*
 293  * Adds a TLV with all rates the hardware *and* BSS supports.
 294  */
 295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 296 {
 297         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 298         const u8 *rates_eid, *ext_rates_eid;
 299         int n = 0;
 300
 301         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 302         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 303
 304         /*
 305          * 01 00                   TLV_TYPE_RATES
 306          * 04 00                   len
 307          * 82 84 8b 96             rates
 308          */
 309         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 310         tlv += sizeof(rate_tlv->header);
 311
 312         /* Add basic rates */
 313         if (rates_eid) {
 314                 tlv = add_ie_rates(tlv, rates_eid, &n);
 315
 316                 /* Add extended rates, if any */
 317                 if (ext_rates_eid)
 318                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 319         } else {
 320                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 321                 /* Fallback: add basic 802.11b rates */
 322                 *tlv++ = 0x82;
 323                 *tlv++ = 0x84;
 324                 *tlv++ = 0x8b;
 325                 *tlv++ = 0x96;
 326                 n = 4;
 327         }
 328
 329         rate_tlv->header.len = cpu_to_le16(n);
 330         return sizeof(rate_tlv->header) + n;
 331 }
 332
 333
 334 /*
 335  * Add auth type TLV.
 336  *
 337  * This is only needed for newer firmware (V9 and up).
 338  */
 339 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 340         sizeof(struct mrvl_ie_auth_type)
 341
 342 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 343 {
 344         struct mrvl_ie_auth_type *auth = (void *) tlv;
 345
 346         /*
 347          * 1f 01  TLV_TYPE_AUTH_TYPE
 348          * 01 00  len
 349          * 01     auth type
 350          */
 351         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 352         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 353         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 354         return sizeof(*auth);
 355 }
 356
 357
 358 /*
 359  * Add channel (phy ds) TLV
 360  */
 361 #define LBS_MAX_CHANNEL_TLV_SIZE \
 362         sizeof(struct mrvl_ie_header)
 363
 364 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 365 {
 366         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 367
 368         /*
 369          * 03 00  TLV_TYPE_PHY_DS
 370          * 01 00  len
 371          * 06     channel
 372          */
 373         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 374         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 375         ds->channel = channel;
 376         return sizeof(*ds);
 377 }
 378
 379
 380 /*
 381  * Add (empty) CF param TLV of the form:
 382  */
 383 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 384         sizeof(struct mrvl_ie_header)
 385
 386 static int lbs_add_cf_param_tlv(u8 *tlv)
 387 {
 388         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 389
 390         /*
 391          * 04 00  TLV_TYPE_CF
 392          * 06 00  len
 393          * 00     cfpcnt
 394          * 00     cfpperiod
 395          * 00 00  cfpmaxduration
 396          * 00 00  cfpdurationremaining
 397          */
 398         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 399         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 400         return sizeof(*cf);
 401 }
 402
 403 /*
 404  * Add WPA TLV
 405  */
 406 #define LBS_MAX_WPA_TLV_SIZE                    \
 407         (sizeof(struct mrvl_ie_header)          \
 408          + 128 /* TODO: I guessed the size */)
 409
 410 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 411 {
 412         size_t tlv_len;
 413
 414         /*
 415          * We need just convert an IE to an TLV. IEs use u8 for the header,
 416          *   u8      type
 417          *   u8      len
 418          *   u8[]    data
 419          * but TLVs use __le16 instead:
 420          *   __le16  type
 421          *   __le16  len
 422          *   u8[]    data
 423          */
 424         *tlv++ = *ie++;
 425         *tlv++ = 0;
 426         tlv_len = *tlv++ = *ie++;
 427         *tlv++ = 0;
 428         while (tlv_len--)
 429                 *tlv++ = *ie++;
 430         /* the TLV is two bytes larger than the IE */
 431         return ie_len + 2;
 432 }
 433
 434 /*
 435  * Set Channel
 436  */
 437
 438 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 439         struct net_device *netdev,
 440         struct ieee80211_channel *channel,
 441         enum nl80211_channel_type channel_type)
 442 {
 443         struct lbs_private *priv = wiphy_priv(wiphy);
 444         int ret = -ENOTSUPP;
 445
 446         lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
 447                            netdev_name(netdev), channel->center_freq, channel_type);
 448
 449         if (channel_type != NL80211_CHAN_NO_HT)
 450                 goto out;
 451
 452         if (netdev == priv->mesh_dev)
 453                 ret = lbs_mesh_set_channel(priv, channel->hw_value);
 454         else
 455                 ret = lbs_set_channel(priv, channel->hw_value);
 456
 457  out:
 458         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 459         return ret;
 460 }
 461
 462
 463
 464 /*
 465  * Scanning
 466  */
 467
 468 /*
 469  * When scanning, the firmware doesn't send a nul packet with the power-safe
 470  * bit to the AP. So we cannot stay away from our current channel too long,
 471  * otherwise we loose data. So take a "nap" while scanning every other
 472  * while.
 473  */
 474 #define LBS_SCAN_BEFORE_NAP 4
 475
 476
 477 /*
 478  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 479  * which isn't really an RSSI, as it becomes larger when moving away from
 480  * the AP. Anyway, we need to convert that into mBm.
 481  */
 482 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 483         ((-(int)rssi + 3)*100)
 484
 485 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 486         struct cmd_header *resp)
 487 {
 488         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 489         int bsssize;
 490         const u8 *pos;
 491         const u8 *tsfdesc;
 492         int tsfsize;
 493         int i;
 494         int ret = -EILSEQ;
 495
 496         lbs_deb_enter(LBS_DEB_CFG80211);
 497
 498         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 499
 500         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 501                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 502
 503         if (scanresp->nr_sets == 0) {
 504                 ret = 0;
 505                 goto done;
 506         }
 507
 508         /*
 509          * The general layout of the scan response is described in chapter
 510          * 5.7.1. Basically we have a common part, then any number of BSS
 511          * descriptor sections. Finally we have section with the same number
 512          * of TSFs.
 513          *
 514          * cmd_ds_802_11_scan_rsp
 515          *   cmd_header
 516          *   pos_size
 517          *   nr_sets
 518          *   bssdesc 1
 519          *     bssid
 520          *     rssi
 521          *     timestamp
 522          *     intvl
 523          *     capa
 524          *     IEs
 525          *   bssdesc 2
 526          *   bssdesc n
 527          *   MrvlIEtypes_TsfFimestamp_t
 528          *     TSF for BSS 1
 529          *     TSF for BSS 2
 530          *     TSF for BSS n
 531          */
 532
 533         pos = scanresp->bssdesc_and_tlvbuffer;
 534
 535         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 536                         scanresp->bssdescriptsize);
 537
 538         tsfdesc = pos + bsssize;
 539         tsfsize = 4 + 8 * scanresp->nr_sets;
 540         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 541
 542         /* Validity check: we expect a Marvell-Local TLV */
 543         i = get_unaligned_le16(tsfdesc);
 544         tsfdesc += 2;
 545         if (i != TLV_TYPE_TSFTIMESTAMP) {
 546                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 547                 goto done;
 548         }
 549
 550         /*
 551          * Validity check: the TLV holds TSF values with 8 bytes each, so
 552          * the size in the TLV must match the nr_sets value
 553          */
 554         i = get_unaligned_le16(tsfdesc);
 555         tsfdesc += 2;
 556         if (i / 8 != scanresp->nr_sets) {
 557                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 558                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 559                              i / 8);
 560                 goto done;
 561         }
 562
 563         for (i = 0; i < scanresp->nr_sets; i++) {
 564                 const u8 *bssid;
 565                 const u8 *ie;
 566                 int left;
 567                 int ielen;
 568                 int rssi;
 569                 u16 intvl;
 570                 u16 capa;
 571                 int chan_no = -1;
 572                 const u8 *ssid = NULL;
 573                 u8 ssid_len = 0;
 574                 DECLARE_SSID_BUF(ssid_buf);
 575
 576                 int len = get_unaligned_le16(pos);
 577                 pos += 2;
 578
 579                 /* BSSID */
 580                 bssid = pos;
 581                 pos += ETH_ALEN;
 582                 /* RSSI */
 583                 rssi = *pos++;
 584                 /* Packet time stamp */
 585                 pos += 8;
 586                 /* Beacon interval */
 587                 intvl = get_unaligned_le16(pos);
 588                 pos += 2;
 589                 /* Capabilities */
 590                 capa = get_unaligned_le16(pos);
 591                 pos += 2;
 592
 593                 /* To find out the channel, we must parse the IEs */
 594                 ie = pos;
 595                 /*
 596                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 597                  * interval, capabilities
 598                  */
 599                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 600                 while (left >= 2) {
 601                         u8 id, elen;
 602                         id = *pos++;
 603                         elen = *pos++;
 604                         left -= 2;
 605                         if (elen > left || elen == 0) {
 606                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 607                                 goto done;
 608                         }
 609
 610                         if (id == WLAN_EID_DS_PARAMS)
 611                                 chan_no = *pos;
 612                         if (id == WLAN_EID_SSID) {
 613                                 ssid = pos;
 614                                 ssid_len = elen;
 615                         }
 616                         left -= elen;
 617                         pos += elen;
 618                 }
 619
 620                 /* No channel, no luck */
 621                 if (chan_no != -1) {
 622                         struct wiphy *wiphy = priv->wdev->wiphy;
 623                         int freq = ieee80211_channel_to_frequency(chan_no,
 624                                                         IEEE80211_BAND_2GHZ);
 625                         struct ieee80211_channel *channel =
 626                                 ieee80211_get_channel(wiphy, freq);
 627
 628                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 629                                      "%d dBm\n",
 630                                      bssid, capa, chan_no,
 631                                      print_ssid(ssid_buf, ssid, ssid_len),
 632                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 633
 634                         if (channel &&
 635                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 636                                 cfg80211_inform_bss(wiphy, channel,
 637                                         bssid, get_unaligned_le64(tsfdesc),
 638                                         capa, intvl, ie, ielen,
 639                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 640                                         GFP_KERNEL);
 641                 } else
 642                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 643
 644                 tsfdesc += 8;
 645         }
 646         ret = 0;
 647
 648  done:
 649         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 650         return ret;
 651 }
 652
 653
 654 /*
 655  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 656  * TLV and a rates TLV. Determine the maximum size of them:
 657  */
 658 #define LBS_SCAN_MAX_CMD_SIZE                   \
 659         (sizeof(struct cmd_ds_802_11_scan)      \
 660          + LBS_MAX_SSID_TLV_SIZE                \
 661          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 662          + LBS_MAX_RATES_TLV_SIZE)
 663
 664 /*
 665  * Assumes priv->scan_req is initialized and valid
 666  * Assumes priv->scan_channel is initialized
 667  */
 668 static void lbs_scan_worker(struct work_struct *work)
 669 {
 670         struct lbs_private *priv =
 671                 container_of(work, struct lbs_private, scan_work.work);
 672         struct cmd_ds_802_11_scan *scan_cmd;
 673         u8 *tlv; /* pointer into our current, growing TLV storage area */
 674         int last_channel;
 675         int running, carrier;
 676
 677         lbs_deb_enter(LBS_DEB_SCAN);
 678
 679         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 680         if (scan_cmd == NULL)
 681                 goto out_no_scan_cmd;
 682
 683         /* prepare fixed part of scan command */
 684         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 685
 686         /* stop network while we're away from our main channel */
 687         running = !netif_queue_stopped(priv->dev);
 688         carrier = netif_carrier_ok(priv->dev);
 689         if (running)
 690                 netif_stop_queue(priv->dev);
 691         if (carrier)
 692                 netif_carrier_off(priv->dev);
 693
 694         /* prepare fixed part of scan command */
 695         tlv = scan_cmd->tlvbuffer;
 696
 697         /* add SSID TLV */
 698         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 699                 tlv += lbs_add_ssid_tlv(tlv,
 700                                         priv->scan_req->ssids[0].ssid,
 701                                         priv->scan_req->ssids[0].ssid_len);
 702
 703         /* add channel TLVs */
 704         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 705         if (last_channel > priv->scan_req->n_channels)
 706                 last_channel = priv->scan_req->n_channels;
 707         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 708                 priv->scan_req->n_ssids);
 709
 710         /* add rates TLV */
 711         tlv += lbs_add_supported_rates_tlv(tlv);
 712
 713         if (priv->scan_channel < priv->scan_req->n_channels) {
 714                 cancel_delayed_work(&priv->scan_work);
 715                 if (netif_running(priv->dev))
 716                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 717                                 msecs_to_jiffies(300));
 718         }
 719
 720         /* This is the final data we are about to send */
 721         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 722         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 723                     sizeof(*scan_cmd));
 724         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 725                     tlv - scan_cmd->tlvbuffer);
 726
 727         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 728                 le16_to_cpu(scan_cmd->hdr.size),
 729                 lbs_ret_scan, 0);
 730
 731         if (priv->scan_channel >= priv->scan_req->n_channels)
 732                 /* Mark scan done */
 733                 lbs_scan_done(priv);
 734
 735         /* Restart network */
 736         if (carrier)
 737                 netif_carrier_on(priv->dev);
 738         if (running && !priv->tx_pending_len)
 739                 netif_wake_queue(priv->dev);
 740
 741         kfree(scan_cmd);
 742
 743         /* Wake up anything waiting on scan completion */
 744         if (priv->scan_req == NULL) {
 745                 lbs_deb_scan("scan: waking up waiters\n");
 746                 wake_up_all(&priv->scan_q);
 747         }
 748
 749  out_no_scan_cmd:
 750         lbs_deb_leave(LBS_DEB_SCAN);
 751 }
 752
 753 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 754         struct cfg80211_scan_request *request)
 755 {
 756         lbs_deb_enter(LBS_DEB_CFG80211);
 757
 758         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 759                 request->n_ssids, request->n_channels, request->ie_len);
 760
 761         priv->scan_channel = 0;
 762         queue_delayed_work(priv->work_thread, &priv->scan_work,
 763                 msecs_to_jiffies(50));
 764
 765         priv->scan_req = request;
 766         priv->internal_scan = internal;
 767
 768         lbs_deb_leave(LBS_DEB_CFG80211);
 769 }
 770
 771 /*
 772  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 773  */
 774 void lbs_scan_done(struct lbs_private *priv)
 775 {
 776         WARN_ON(!priv->scan_req);
 777
 778         if (priv->internal_scan)
 779                 kfree(priv->scan_req);
 780         else
 781                 cfg80211_scan_done(priv->scan_req, false);
 782
 783         priv->scan_req = NULL;
 784 }
 785
 786 static int lbs_cfg_scan(struct wiphy *wiphy,
 787         struct net_device *dev,
 788         struct cfg80211_scan_request *request)
 789 {
 790         struct lbs_private *priv = wiphy_priv(wiphy);
 791         int ret = 0;
 792
 793         lbs_deb_enter(LBS_DEB_CFG80211);
 794
 795         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 796                 /* old scan request not yet processed */
 797                 ret = -EAGAIN;
 798                 goto out;
 799         }
 800
 801         _internal_start_scan(priv, false, request);
 802
 803         if (priv->surpriseremoved)
 804                 ret = -EIO;
 805
 806  out:
 807         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 808         return ret;
 809 }
 810
 811
 812
 813
 814 /*
 815  * Events
 816  */
 817
 818 void lbs_send_disconnect_notification(struct lbs_private *priv)
 819 {
 820         lbs_deb_enter(LBS_DEB_CFG80211);
 821
 822         cfg80211_disconnected(priv->dev,
 823                 0,
 824                 NULL, 0,
 825                 GFP_KERNEL);
 826
 827         lbs_deb_leave(LBS_DEB_CFG80211);
 828 }
 829
 830 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 831 {
 832         lbs_deb_enter(LBS_DEB_CFG80211);
 833
 834         cfg80211_michael_mic_failure(priv->dev,
 835                 priv->assoc_bss,
 836                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 837                         NL80211_KEYTYPE_GROUP :
 838                         NL80211_KEYTYPE_PAIRWISE,
 839                 -1,
 840                 NULL,
 841                 GFP_KERNEL);
 842
 843         lbs_deb_leave(LBS_DEB_CFG80211);
 844 }
 845
 846
 847
 848
 849 /*
 850  * Connect/disconnect
 851  */
 852
 853
 854 /*
 855  * This removes all WEP keys
 856  */
 857 static int lbs_remove_wep_keys(struct lbs_private *priv)
 858 {
 859         struct cmd_ds_802_11_set_wep cmd;
 860         int ret;
 861
 862         lbs_deb_enter(LBS_DEB_CFG80211);
 863
 864         memset(&cmd, 0, sizeof(cmd));
 865         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 866         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 867         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 868
 869         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 870
 871         lbs_deb_leave(LBS_DEB_CFG80211);
 872         return ret;
 873 }
 874
 875 /*
 876  * Set WEP keys
 877  */
 878 static int lbs_set_wep_keys(struct lbs_private *priv)
 879 {
 880         struct cmd_ds_802_11_set_wep cmd;
 881         int i;
 882         int ret;
 883
 884         lbs_deb_enter(LBS_DEB_CFG80211);
 885
 886         /*
 887          * command         13 00
 888          * size            50 00
 889          * sequence        xx xx
 890          * result          00 00
 891          * action          02 00     ACT_ADD
 892          * transmit key    00 00
 893          * type for key 1  01        WEP40
 894          * type for key 2  00
 895          * type for key 3  00
 896          * type for key 4  00
 897          * key 1           39 39 39 39 39 00 00 00
 898          *                 00 00 00 00 00 00 00 00
 899          * key 2           00 00 00 00 00 00 00 00
 900          *                 00 00 00 00 00 00 00 00
 901          * key 3           00 00 00 00 00 00 00 00
 902          *                 00 00 00 00 00 00 00 00
 903          * key 4           00 00 00 00 00 00 00 00
 904          */
 905         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 906             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 907                 /* Only set wep keys if we have at least one of them */
 908                 memset(&cmd, 0, sizeof(cmd));
 909                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 910                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 911                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 912
 913                 for (i = 0; i < 4; i++) {
 914                         switch (priv->wep_key_len[i]) {
 915                         case WLAN_KEY_LEN_WEP40:
 916                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 917                                 break;
 918                         case WLAN_KEY_LEN_WEP104:
 919                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 920                                 break;
 921                         default:
 922                                 cmd.keytype[i] = 0;
 923                                 break;
 924                         }
 925                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 926                                priv->wep_key_len[i]);
 927                 }
 928
 929                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 930         } else {
 931                 /* Otherwise remove all wep keys */
 932                 ret = lbs_remove_wep_keys(priv);
 933         }
 934
 935         lbs_deb_leave(LBS_DEB_CFG80211);
 936         return ret;
 937 }
 938
 939
 940 /*
 941  * Enable/Disable RSN status
 942  */
 943 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 944 {
 945         struct cmd_ds_802_11_enable_rsn cmd;
 946         int ret;
 947
 948         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 949
 950         /*
 951          * cmd       2f 00
 952          * size      0c 00
 953          * sequence  xx xx
 954          * result    00 00
 955          * action    01 00    ACT_SET
 956          * enable    01 00
 957          */
 958         memset(&cmd, 0, sizeof(cmd));
 959         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 960         cmd.action = cpu_to_le16(CMD_ACT_SET);
 961         cmd.enable = cpu_to_le16(enable);
 962
 963         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 964
 965         lbs_deb_leave(LBS_DEB_CFG80211);
 966         return ret;
 967 }
 968
 969
 970 /*
 971  * Set WPA/WPA key material
 972  */
 973
 974 /*
 975  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 976  * get rid of WEXT, this should go into host.h
 977  */
 978
 979 struct cmd_key_material {
 980         struct cmd_header hdr;
 981
 982         __le16 action;
 983         struct MrvlIEtype_keyParamSet param;
 984 } __packed;
 985
 986 static int lbs_set_key_material(struct lbs_private *priv,
 987                                 int key_type,
 988                                 int key_info,
 989                                 u8 *key, u16 key_len)
 990 {
 991         struct cmd_key_material cmd;
 992         int ret;
 993
 994         lbs_deb_enter(LBS_DEB_CFG80211);
 995
 996         /*
 997          * Example for WPA (TKIP):
 998          *
 999          * cmd       5e 00
1000          * size      34 00
1001          * sequence  xx xx
1002          * result    00 00
1003          * action    01 00
1004          * TLV type  00 01    key param
1005          * length    00 26
1006          * key type  01 00    TKIP
1007          * key info  06 00    UNICAST | ENABLED
1008          * key len   20 00
1009          * key       32 bytes
1010          */
1011         memset(&cmd, 0, sizeof(cmd));
1012         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1013         cmd.action = cpu_to_le16(CMD_ACT_SET);
1014         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1015         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1016         cmd.param.keytypeid = cpu_to_le16(key_type);
1017         cmd.param.keyinfo = cpu_to_le16(key_info);
1018         cmd.param.keylen = cpu_to_le16(key_len);
1019         if (key && key_len)
1020                 memcpy(cmd.param.key, key, key_len);
1021
1022         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1023
1024         lbs_deb_leave(LBS_DEB_CFG80211);
1025         return ret;
1026 }
1027
1028
1029 /*
1030  * Sets the auth type (open, shared, etc) in the firmware. That
1031  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1032  * command doesn't send an authentication frame at all, it just
1033  * stores the auth_type.
1034  */
1035 static int lbs_set_authtype(struct lbs_private *priv,
1036                             struct cfg80211_connect_params *sme)
1037 {
1038         struct cmd_ds_802_11_authenticate cmd;
1039         int ret;
1040
1041         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1042
1043         /*
1044          * cmd        11 00
1045          * size       19 00
1046          * sequence   xx xx
1047          * result     00 00
1048          * BSS id     00 13 19 80 da 30
1049          * auth type  00
1050          * reserved   00 00 00 00 00 00 00 00 00 00
1051          */
1052         memset(&cmd, 0, sizeof(cmd));
1053         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1054         if (sme->bssid)
1055                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1056         /* convert auth_type */
1057         ret = lbs_auth_to_authtype(sme->auth_type);
1058         if (ret < 0)
1059                 goto done;
1060
1061         cmd.authtype = ret;
1062         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1063
1064  done:
1065         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1066         return ret;
1067 }
1068
1069
1070 /*
1071  * Create association request
1072  */
1073 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1074         (sizeof(struct cmd_ds_802_11_associate)    \
1075          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1076          + LBS_MAX_SSID_TLV_SIZE                   \
1077          + LBS_MAX_CHANNEL_TLV_SIZE                \
1078          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1079          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1080          + LBS_MAX_WPA_TLV_SIZE)
1081
1082 static int lbs_associate(struct lbs_private *priv,
1083                 struct cfg80211_bss *bss,
1084                 struct cfg80211_connect_params *sme)
1085 {
1086         struct cmd_ds_802_11_associate_response *resp;
1087         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1088                                                       GFP_KERNEL);
1089         const u8 *ssid_eid;
1090         size_t len, resp_ie_len;
1091         int status;
1092         int ret;
1093         u8 *pos = &(cmd->iebuf[0]);
1094         u8 *tmp;
1095
1096         lbs_deb_enter(LBS_DEB_CFG80211);
1097
1098         if (!cmd) {
1099                 ret = -ENOMEM;
1100                 goto done;
1101         }
1102
1103         /*
1104          * cmd              50 00
1105          * length           34 00
1106          * sequence         xx xx
1107          * result           00 00
1108          * BSS id           00 13 19 80 da 30
1109          * capabilities     11 00
1110          * listen interval  0a 00
1111          * beacon interval  00 00
1112          * DTIM period      00
1113          * TLVs             xx   (up to 512 bytes)
1114          */
1115         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1116
1117         /* Fill in static fields */
1118         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1119         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1120         cmd->capability = cpu_to_le16(bss->capability);
1121
1122         /* add SSID TLV */
1123         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1124         if (ssid_eid)
1125                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1126         else
1127                 lbs_deb_assoc("no SSID\n");
1128
1129         /* add DS param TLV */
1130         if (bss->channel)
1131                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1132         else
1133                 lbs_deb_assoc("no channel\n");
1134
1135         /* add (empty) CF param TLV */
1136         pos += lbs_add_cf_param_tlv(pos);
1137
1138         /* add rates TLV */
1139         tmp = pos + 4; /* skip Marvell IE header */
1140         pos += lbs_add_common_rates_tlv(pos, bss);
1141         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1142
1143         /* add auth type TLV */
1144         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1145                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1146
1147         /* add WPA/WPA2 TLV */
1148         if (sme->ie && sme->ie_len)
1149                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1150
1151         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1152                 (u16)(pos - (u8 *) &cmd->iebuf);
1153         cmd->hdr.size = cpu_to_le16(len);
1154
1155         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1156                         le16_to_cpu(cmd->hdr.size));
1157
1158         /* store for later use */
1159         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1160
1161         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1162         if (ret)
1163                 goto done;
1164
1165         /* generate connect message to cfg80211 */
1166
1167         resp = (void *) cmd; /* recast for easier field access */
1168         status = le16_to_cpu(resp->statuscode);
1169
1170         /* Older FW versions map the IEEE 802.11 Status Code in the association
1171          * response to the following values returned in resp->statuscode:
1172          *
1173          *    IEEE Status Code                Marvell Status Code
1174          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1175          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1176          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1177          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1178          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1179          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1180          *
1181          * Other response codes:
1182          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1183          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1184          *                                    association response from the AP)
1185          */
1186         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1187                 switch (status) {
1188                 case 0:
1189                         break;
1190                 case 1:
1191                         lbs_deb_assoc("invalid association parameters\n");
1192                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1193                         break;
1194                 case 2:
1195                         lbs_deb_assoc("timer expired while waiting for AP\n");
1196                         status = WLAN_STATUS_AUTH_TIMEOUT;
1197                         break;
1198                 case 3:
1199                         lbs_deb_assoc("association refused by AP\n");
1200                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1201                         break;
1202                 case 4:
1203                         lbs_deb_assoc("authentication refused by AP\n");
1204                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1205                         break;
1206                 default:
1207                         lbs_deb_assoc("association failure %d\n", status);
1208                         /* v5 OLPC firmware does return the AP status code if
1209                          * it's not one of the values above.  Let that through.
1210                          */
1211                         break;
1212                 }
1213         }
1214
1215         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1216                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1217                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1218
1219         resp_ie_len = le16_to_cpu(resp->hdr.size)
1220                 - sizeof(resp->hdr)
1221                 - 6;
1222         cfg80211_connect_result(priv->dev,
1223                                 priv->assoc_bss,
1224                                 sme->ie, sme->ie_len,
1225                                 resp->iebuf, resp_ie_len,
1226                                 status,
1227                                 GFP_KERNEL);
1228
1229         if (status == 0) {
1230                 /* TODO: get rid of priv->connect_status */
1231                 priv->connect_status = LBS_CONNECTED;
1232                 netif_carrier_on(priv->dev);
1233                 if (!priv->tx_pending_len)
1234                         netif_tx_wake_all_queues(priv->dev);
1235         }
1236
1237 done:
1238         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1239         return ret;
1240 }
1241
1242 static struct cfg80211_scan_request *
1243 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1244 {
1245         struct cfg80211_scan_request *creq = NULL;
1246         int i, n_channels = 0;
1247         enum ieee80211_band band;
1248
1249         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1250                 if (wiphy->bands[band])
1251                         n_channels += wiphy->bands[band]->n_channels;
1252         }
1253
1254         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1255                        n_channels * sizeof(void *),
1256                        GFP_ATOMIC);
1257         if (!creq)
1258                 return NULL;
1259
1260         /* SSIDs come after channels */
1261         creq->ssids = (void *)&creq->channels[n_channels];
1262         creq->n_channels = n_channels;
1263         creq->n_ssids = 1;
1264
1265         /* Scan all available channels */
1266         i = 0;
1267         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1268                 int j;
1269
1270                 if (!wiphy->bands[band])
1271                         continue;
1272
1273                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1274                         /* ignore disabled channels */
1275                         if (wiphy->bands[band]->channels[j].flags &
1276                                                 IEEE80211_CHAN_DISABLED)
1277                                 continue;
1278
1279                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1280                         i++;
1281                 }
1282         }
1283         if (i) {
1284                 /* Set real number of channels specified in creq->channels[] */
1285                 creq->n_channels = i;
1286
1287                 /* Scan for the SSID we're going to connect to */
1288                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1289                 creq->ssids[0].ssid_len = sme->ssid_len;
1290         } else {
1291                 /* No channels found... */
1292                 kfree(creq);
1293                 creq = NULL;
1294         }
1295
1296         return creq;
1297 }
1298
1299 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1300                            struct cfg80211_connect_params *sme)
1301 {
1302         struct lbs_private *priv = wiphy_priv(wiphy);
1303         struct cfg80211_bss *bss = NULL;
1304         int ret = 0;
1305         u8 preamble = RADIO_PREAMBLE_SHORT;
1306
1307         if (dev == priv->mesh_dev)
1308                 return -EOPNOTSUPP;
1309
1310         lbs_deb_enter(LBS_DEB_CFG80211);
1311
1312         if (!sme->bssid) {
1313                 struct cfg80211_scan_request *creq;
1314
1315                 /*
1316                  * Scan for the requested network after waiting for existing
1317                  * scans to finish.
1318                  */
1319                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1320                 wait_event_interruptible_timeout(priv->scan_q,
1321                                                  (priv->scan_req == NULL),
1322                                                  (15 * HZ));
1323
1324                 creq = _new_connect_scan_req(wiphy, sme);
1325                 if (!creq) {
1326                         ret = -EINVAL;
1327                         goto done;
1328                 }
1329
1330                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1331                 _internal_start_scan(priv, true, creq);
1332
1333                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1334                 wait_event_interruptible_timeout(priv->scan_q,
1335                                                  (priv->scan_req == NULL),
1336                                                  (15 * HZ));
1337                 lbs_deb_assoc("assoc: scanning competed\n");
1338         }
1339
1340         /* Find the BSS we want using available scan results */
1341         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1342                 sme->ssid, sme->ssid_len,
1343                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1344         if (!bss) {
1345                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1346                           sme->bssid);
1347                 ret = -ENOENT;
1348                 goto done;
1349         }
1350         lbs_deb_assoc("trying %pM\n", bss->bssid);
1351         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1352                       sme->crypto.cipher_group,
1353                       sme->key_idx, sme->key_len);
1354
1355         /* As this is a new connection, clear locally stored WEP keys */
1356         priv->wep_tx_key = 0;
1357         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1358         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1359
1360         /* set/remove WEP keys */
1361         switch (sme->crypto.cipher_group) {
1362         case WLAN_CIPHER_SUITE_WEP40:
1363         case WLAN_CIPHER_SUITE_WEP104:
1364                 /* Store provided WEP keys in priv-> */
1365                 priv->wep_tx_key = sme->key_idx;
1366                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1367                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1368                 /* Set WEP keys and WEP mode */
1369                 lbs_set_wep_keys(priv);
1370                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1371                 lbs_set_mac_control(priv);
1372                 /* No RSN mode for WEP */
1373                 lbs_enable_rsn(priv, 0);
1374                 break;
1375         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1376                 /*
1377                  * If we don't have no WEP, no WPA and no WPA2,
1378                  * we remove all keys like in the WPA/WPA2 setup,
1379                  * we just don't set RSN.
1380                  *
1381                  * Therefore: fall-through
1382                  */
1383         case WLAN_CIPHER_SUITE_TKIP:
1384         case WLAN_CIPHER_SUITE_CCMP:
1385                 /* Remove WEP keys and WEP mode */
1386                 lbs_remove_wep_keys(priv);
1387                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1388                 lbs_set_mac_control(priv);
1389
1390                 /* clear the WPA/WPA2 keys */
1391                 lbs_set_key_material(priv,
1392                         KEY_TYPE_ID_WEP, /* doesn't matter */
1393                         KEY_INFO_WPA_UNICAST,
1394                         NULL, 0);
1395                 lbs_set_key_material(priv,
1396                         KEY_TYPE_ID_WEP, /* doesn't matter */
1397                         KEY_INFO_WPA_MCAST,
1398                         NULL, 0);
1399                 /* RSN mode for WPA/WPA2 */
1400                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1401                 break;
1402         default:
1403                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1404                           sme->crypto.cipher_group);
1405                 ret = -ENOTSUPP;
1406                 goto done;
1407         }
1408
1409         lbs_set_authtype(priv, sme);
1410         lbs_set_radio(priv, preamble, 1);
1411
1412         /* Do the actual association */
1413         ret = lbs_associate(priv, bss, sme);
1414
1415  done:
1416         if (bss)
1417                 cfg80211_put_bss(bss);
1418         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1419         return ret;
1420 }
1421
1422 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1423 {
1424         struct cmd_ds_802_11_deauthenticate cmd;
1425         int ret;
1426
1427         memset(&cmd, 0, sizeof(cmd));
1428         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1429         /* Mildly ugly to use a locally store my own BSSID ... */
1430         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1431         cmd.reasoncode = cpu_to_le16(reason);
1432
1433         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1434         if (ret)
1435                 return ret;
1436
1437         cfg80211_disconnected(priv->dev,
1438                         reason,
1439                         NULL, 0,
1440                         GFP_KERNEL);
1441         priv->connect_status = LBS_DISCONNECTED;
1442
1443         return 0;
1444 }
1445
1446 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1447         u16 reason_code)
1448 {
1449         struct lbs_private *priv = wiphy_priv(wiphy);
1450
1451         if (dev == priv->mesh_dev)
1452                 return -EOPNOTSUPP;
1453
1454         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1455
1456         /* store for lbs_cfg_ret_disconnect() */
1457         priv->disassoc_reason = reason_code;
1458
1459         return lbs_disconnect(priv, reason_code);
1460 }
1461
1462 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1463                                    struct net_device *netdev,
1464                                    u8 key_index, bool unicast,
1465                                    bool multicast)
1466 {
1467         struct lbs_private *priv = wiphy_priv(wiphy);
1468
1469         if (netdev == priv->mesh_dev)
1470                 return -EOPNOTSUPP;
1471
1472         lbs_deb_enter(LBS_DEB_CFG80211);
1473
1474         if (key_index != priv->wep_tx_key) {
1475                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1476                 priv->wep_tx_key = key_index;
1477                 lbs_set_wep_keys(priv);
1478         }
1479
1480         return 0;
1481 }
1482
1483
1484 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1485                            u8 idx, bool pairwise, const u8 *mac_addr,
1486                            struct key_params *params)
1487 {
1488         struct lbs_private *priv = wiphy_priv(wiphy);
1489         u16 key_info;
1490         u16 key_type;
1491         int ret = 0;
1492
1493         if (netdev == priv->mesh_dev)
1494                 return -EOPNOTSUPP;
1495
1496         lbs_deb_enter(LBS_DEB_CFG80211);
1497
1498         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1499                       params->cipher, mac_addr);
1500         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1501                       idx, params->key_len);
1502         if (params->key_len)
1503                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1504                             params->key, params->key_len);
1505
1506         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1507         if (params->seq_len)
1508                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1509                             params->seq, params->seq_len);
1510
1511         switch (params->cipher) {
1512         case WLAN_CIPHER_SUITE_WEP40:
1513         case WLAN_CIPHER_SUITE_WEP104:
1514                 /* actually compare if something has changed ... */
1515                 if ((priv->wep_key_len[idx] != params->key_len) ||
1516                         memcmp(priv->wep_key[idx],
1517                                params->key, params->key_len) != 0) {
1518                         priv->wep_key_len[idx] = params->key_len;
1519                         memcpy(priv->wep_key[idx],
1520                                params->key, params->key_len);
1521                         lbs_set_wep_keys(priv);
1522                 }
1523                 break;
1524         case WLAN_CIPHER_SUITE_TKIP:
1525         case WLAN_CIPHER_SUITE_CCMP:
1526                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1527                                                    ? KEY_INFO_WPA_UNICAST
1528                                                    : KEY_INFO_WPA_MCAST);
1529                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1530                         ? KEY_TYPE_ID_TKIP
1531                         : KEY_TYPE_ID_AES;
1532                 lbs_set_key_material(priv,
1533                                      key_type,
1534                                      key_info,
1535                                      params->key, params->key_len);
1536                 break;
1537         default:
1538                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1539                 ret = -ENOTSUPP;
1540                 break;
1541         }
1542
1543         return ret;
1544 }
1545
1546
1547 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1548                            u8 key_index, bool pairwise, const u8 *mac_addr)
1549 {
1550
1551         lbs_deb_enter(LBS_DEB_CFG80211);
1552
1553         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1554                       key_index, mac_addr);
1555
1556 #ifdef TODO
1557         struct lbs_private *priv = wiphy_priv(wiphy);
1558         /*
1559          * I think can keep this a NO-OP, because:
1560
1561          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1562          * - neither "iw" nor "wpa_supplicant" won't call this during
1563          *   an ongoing connection
1564          * - TODO: but I have to check if this is still true when
1565          *   I set the AP to periodic re-keying
1566          * - we've not kzallec() something when we've added a key at
1567          *   lbs_cfg_connect() or lbs_cfg_add_key().
1568          *
1569          * This causes lbs_cfg_del_key() only called at disconnect time,
1570          * where we'd just waste time deleting a key that is not going
1571          * to be used anyway.
1572          */
1573         if (key_index < 3 && priv->wep_key_len[key_index]) {
1574                 priv->wep_key_len[key_index] = 0;
1575                 lbs_set_wep_keys(priv);
1576         }
1577 #endif
1578
1579         return 0;
1580 }
1581
1582
1583 /*
1584  * Get station
1585  */
1586
1587 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1588                               u8 *mac, struct station_info *sinfo)
1589 {
1590         struct lbs_private *priv = wiphy_priv(wiphy);
1591         s8 signal, noise;
1592         int ret;
1593         size_t i;
1594
1595         lbs_deb_enter(LBS_DEB_CFG80211);
1596
1597         sinfo->filled |= STATION_INFO_TX_BYTES |
1598                          STATION_INFO_TX_PACKETS |
1599                          STATION_INFO_RX_BYTES |
1600                          STATION_INFO_RX_PACKETS;
1601         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1602         sinfo->tx_packets = priv->dev->stats.tx_packets;
1603         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1604         sinfo->rx_packets = priv->dev->stats.rx_packets;
1605
1606         /* Get current RSSI */
1607         ret = lbs_get_rssi(priv, &signal, &noise);
1608         if (ret == 0) {
1609                 sinfo->signal = signal;
1610                 sinfo->filled |= STATION_INFO_SIGNAL;
1611         }
1612
1613         /* Convert priv->cur_rate from hw_value to NL80211 value */
1614         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1615                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1616                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1617                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1618                         break;
1619                 }
1620         }
1621
1622         return 0;
1623 }
1624
1625
1626
1627
1628 /*
1629  * "Site survey", here just current channel and noise level
1630  */
1631
1632 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1633         int idx, struct survey_info *survey)
1634 {
1635         struct lbs_private *priv = wiphy_priv(wiphy);
1636         s8 signal, noise;
1637         int ret;
1638
1639         if (dev == priv->mesh_dev)
1640                 return -EOPNOTSUPP;
1641
1642         if (idx != 0)
1643                 ret = -ENOENT;
1644
1645         lbs_deb_enter(LBS_DEB_CFG80211);
1646
1647         survey->channel = ieee80211_get_channel(wiphy,
1648                 ieee80211_channel_to_frequency(priv->channel,
1649                                                IEEE80211_BAND_2GHZ));
1650
1651         ret = lbs_get_rssi(priv, &signal, &noise);
1652         if (ret == 0) {
1653                 survey->filled = SURVEY_INFO_NOISE_DBM;
1654                 survey->noise = noise;
1655         }
1656
1657         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1658         return ret;
1659 }
1660
1661
1662
1663
1664 /*
1665  * Change interface
1666  */
1667
1668 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1669         enum nl80211_iftype type, u32 *flags,
1670                struct vif_params *params)
1671 {
1672         struct lbs_private *priv = wiphy_priv(wiphy);
1673         int ret = 0;
1674
1675         if (dev == priv->mesh_dev)
1676                 return -EOPNOTSUPP;
1677
1678         switch (type) {
1679         case NL80211_IFTYPE_MONITOR:
1680         case NL80211_IFTYPE_STATION:
1681         case NL80211_IFTYPE_ADHOC:
1682                 break;
1683         default:
1684                 return -EOPNOTSUPP;
1685         }
1686
1687         lbs_deb_enter(LBS_DEB_CFG80211);
1688
1689         if (priv->iface_running)
1690                 ret = lbs_set_iface_type(priv, type);
1691
1692         if (!ret)
1693                 priv->wdev->iftype = type;
1694
1695         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1696         return ret;
1697 }
1698
1699
1700
1701 /*
1702  * IBSS (Ad-Hoc)
1703  */
1704
1705 /*
1706  * The firmware needs the following bits masked out of the beacon-derived
1707  * capability field when associating/joining to a BSS:
1708  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1709  */
1710 #define CAPINFO_MASK (~(0xda00))
1711
1712
1713 static void lbs_join_post(struct lbs_private *priv,
1714                           struct cfg80211_ibss_params *params,
1715                           u8 *bssid, u16 capability)
1716 {
1717         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1718                    2 + 4 +                      /* basic rates */
1719                    2 + 1 +                      /* DS parameter */
1720                    2 + 2 +                      /* atim */
1721                    2 + 8];                      /* extended rates */
1722         u8 *fake = fake_ie;
1723
1724         lbs_deb_enter(LBS_DEB_CFG80211);
1725
1726         /*
1727          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1728          * the real IE from the firmware. So we fabricate a fake IE based on
1729          * what the firmware actually sends (sniffed with wireshark).
1730          */
1731         /* Fake SSID IE */
1732         *fake++ = WLAN_EID_SSID;
1733         *fake++ = params->ssid_len;
1734         memcpy(fake, params->ssid, params->ssid_len);
1735         fake += params->ssid_len;
1736         /* Fake supported basic rates IE */
1737         *fake++ = WLAN_EID_SUPP_RATES;
1738         *fake++ = 4;
1739         *fake++ = 0x82;
1740         *fake++ = 0x84;
1741         *fake++ = 0x8b;
1742         *fake++ = 0x96;
1743         /* Fake DS channel IE */
1744         *fake++ = WLAN_EID_DS_PARAMS;
1745         *fake++ = 1;
1746         *fake++ = params->channel->hw_value;
1747         /* Fake IBSS params IE */
1748         *fake++ = WLAN_EID_IBSS_PARAMS;
1749         *fake++ = 2;
1750         *fake++ = 0; /* ATIM=0 */
1751         *fake++ = 0;
1752         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1753          * but I don't know how this could be checked */
1754         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1755         *fake++ = 8;
1756         *fake++ = 0x0c;
1757         *fake++ = 0x12;
1758         *fake++ = 0x18;
1759         *fake++ = 0x24;
1760         *fake++ = 0x30;
1761         *fake++ = 0x48;
1762         *fake++ = 0x60;
1763         *fake++ = 0x6c;
1764         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1765
1766         cfg80211_inform_bss(priv->wdev->wiphy,
1767                             params->channel,
1768                             bssid,
1769                             0,
1770                             capability,
1771                             params->beacon_interval,
1772                             fake_ie, fake - fake_ie,
1773                             0, GFP_KERNEL);
1774
1775         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1776         priv->wdev->ssid_len = params->ssid_len;
1777
1778         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1779
1780         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1781         priv->connect_status = LBS_CONNECTED;
1782         netif_carrier_on(priv->dev);
1783         if (!priv->tx_pending_len)
1784                 netif_wake_queue(priv->dev);
1785
1786         lbs_deb_leave(LBS_DEB_CFG80211);
1787 }
1788
1789 static int lbs_ibss_join_existing(struct lbs_private *priv,
1790         struct cfg80211_ibss_params *params,
1791         struct cfg80211_bss *bss)
1792 {
1793         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1794         struct cmd_ds_802_11_ad_hoc_join cmd;
1795         u8 preamble = RADIO_PREAMBLE_SHORT;
1796         int ret = 0;
1797
1798         lbs_deb_enter(LBS_DEB_CFG80211);
1799
1800         /* TODO: set preamble based on scan result */
1801         ret = lbs_set_radio(priv, preamble, 1);
1802         if (ret)
1803                 goto out;
1804
1805         /*
1806          * Example CMD_802_11_AD_HOC_JOIN command:
1807          *
1808          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1809          * size            65 00
1810          * sequence        xx xx
1811          * result          00 00
1812          * bssid           02 27 27 97 2f 96
1813          * ssid            49 42 53 53 00 00 00 00
1814          *                 00 00 00 00 00 00 00 00
1815          *                 00 00 00 00 00 00 00 00
1816          *                 00 00 00 00 00 00 00 00
1817          * type            02            CMD_BSS_TYPE_IBSS
1818          * beacon period   64 00
1819          * dtim period     00
1820          * timestamp       00 00 00 00 00 00 00 00
1821          * localtime       00 00 00 00 00 00 00 00
1822          * IE DS           03
1823          * IE DS len       01
1824          * IE DS channel   01
1825          * reserveed       00 00 00 00
1826          * IE IBSS         06
1827          * IE IBSS len     02
1828          * IE IBSS atim    00 00
1829          * reserved        00 00 00 00
1830          * capability      02 00
1831          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1832          * fail timeout    ff 00
1833          * probe delay     00 00
1834          */
1835         memset(&cmd, 0, sizeof(cmd));
1836         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1837
1838         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1839         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1840         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1841         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1842         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1843         cmd.bss.ds.header.len = 1;
1844         cmd.bss.ds.channel = params->channel->hw_value;
1845         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1846         cmd.bss.ibss.header.len = 2;
1847         cmd.bss.ibss.atimwindow = 0;
1848         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1849
1850         /* set rates to the intersection of our rates and the rates in the
1851            bss */
1852         if (!rates_eid) {
1853                 lbs_add_rates(cmd.bss.rates);
1854         } else {
1855                 int hw, i;
1856                 u8 rates_max = rates_eid[1];
1857                 u8 *rates = cmd.bss.rates;
1858                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1859                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1860                         for (i = 0; i < rates_max; i++) {
1861                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1862                                         u8 rate = rates_eid[i+2];
1863                                         if (rate == 0x02 || rate == 0x04 ||
1864                                             rate == 0x0b || rate == 0x16)
1865                                                 rate |= 0x80;
1866                                         *rates++ = rate;
1867                                 }
1868                         }
1869                 }
1870         }
1871
1872         /* Only v8 and below support setting this */
1873         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1874                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1875                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1876         }
1877         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1878         if (ret)
1879                 goto out;
1880
1881         /*
1882          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1883          *
1884          * response        2c 80
1885          * size            09 00
1886          * sequence        xx xx
1887          * result          00 00
1888          * reserved        00
1889          */
1890         lbs_join_post(priv, params, bss->bssid, bss->capability);
1891
1892  out:
1893         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1894         return ret;
1895 }
1896
1897
1898
1899 static int lbs_ibss_start_new(struct lbs_private *priv,
1900         struct cfg80211_ibss_params *params)
1901 {
1902         struct cmd_ds_802_11_ad_hoc_start cmd;
1903         struct cmd_ds_802_11_ad_hoc_result *resp =
1904                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1905         u8 preamble = RADIO_PREAMBLE_SHORT;
1906         int ret = 0;
1907         u16 capability;
1908
1909         lbs_deb_enter(LBS_DEB_CFG80211);
1910
1911         ret = lbs_set_radio(priv, preamble, 1);
1912         if (ret)
1913                 goto out;
1914
1915         /*
1916          * Example CMD_802_11_AD_HOC_START command:
1917          *
1918          * command         2b 00         CMD_802_11_AD_HOC_START
1919          * size            b1 00
1920          * sequence        xx xx
1921          * result          00 00
1922          * ssid            54 45 53 54 00 00 00 00
1923          *                 00 00 00 00 00 00 00 00
1924          *                 00 00 00 00 00 00 00 00
1925          *                 00 00 00 00 00 00 00 00
1926          * bss type        02
1927          * beacon period   64 00
1928          * dtim period     00
1929          * IE IBSS         06
1930          * IE IBSS len     02
1931          * IE IBSS atim    00 00
1932          * reserved        00 00 00 00
1933          * IE DS           03
1934          * IE DS len       01
1935          * IE DS channel   01
1936          * reserved        00 00 00 00
1937          * probe delay     00 00
1938          * capability      02 00
1939          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1940          *                 0c 12 18 24 30 48 60 6c
1941          * padding         100 bytes
1942          */
1943         memset(&cmd, 0, sizeof(cmd));
1944         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1945         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1946         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1947         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1948         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1949         cmd.ibss.header.len = 2;
1950         cmd.ibss.atimwindow = 0;
1951         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1952         cmd.ds.header.len = 1;
1953         cmd.ds.channel = params->channel->hw_value;
1954         /* Only v8 and below support setting probe delay */
1955         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1956                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1957         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1958         capability = WLAN_CAPABILITY_IBSS;
1959         cmd.capability = cpu_to_le16(capability);
1960         lbs_add_rates(cmd.rates);
1961
1962
1963         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1964         if (ret)
1965                 goto out;
1966
1967         /*
1968          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1969          *
1970          * response        2b 80
1971          * size            14 00
1972          * sequence        xx xx
1973          * result          00 00
1974          * reserved        00
1975          * bssid           02 2b 7b 0f 86 0e
1976          */
1977         lbs_join_post(priv, params, resp->bssid, capability);
1978
1979  out:
1980         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1981         return ret;
1982 }
1983
1984
1985 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1986                 struct cfg80211_ibss_params *params)
1987 {
1988         struct lbs_private *priv = wiphy_priv(wiphy);
1989         int ret = 0;
1990         struct cfg80211_bss *bss;
1991         DECLARE_SSID_BUF(ssid_buf);
1992
1993         if (dev == priv->mesh_dev)
1994                 return -EOPNOTSUPP;
1995
1996         lbs_deb_enter(LBS_DEB_CFG80211);
1997
1998         if (!params->channel) {
1999                 ret = -ENOTSUPP;
2000                 goto out;
2001         }
2002
2003         ret = lbs_set_channel(priv, params->channel->hw_value);
2004         if (ret)
2005                 goto out;
2006
2007         /* Search if someone is beaconing. This assumes that the
2008          * bss list is populated already */
2009         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2010                 params->ssid, params->ssid_len,
2011                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2012
2013         if (bss) {
2014                 ret = lbs_ibss_join_existing(priv, params, bss);
2015                 cfg80211_put_bss(bss);
2016         } else
2017                 ret = lbs_ibss_start_new(priv, params);
2018
2019
2020  out:
2021         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2022         return ret;
2023 }
2024
2025
2026 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2027 {
2028         struct lbs_private *priv = wiphy_priv(wiphy);
2029         struct cmd_ds_802_11_ad_hoc_stop cmd;
2030         int ret = 0;
2031
2032         if (dev == priv->mesh_dev)
2033                 return -EOPNOTSUPP;
2034
2035         lbs_deb_enter(LBS_DEB_CFG80211);
2036
2037         memset(&cmd, 0, sizeof(cmd));
2038         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2039         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2040
2041         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2042         lbs_mac_event_disconnected(priv);
2043
2044         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2045         return ret;
2046 }
2047
2048
2049
2050
2051 /*
2052  * Initialization
2053  */
2054
2055 static struct cfg80211_ops lbs_cfg80211_ops = {
2056         .set_channel = lbs_cfg_set_channel,
2057         .scan = lbs_cfg_scan,
2058         .connect = lbs_cfg_connect,
2059         .disconnect = lbs_cfg_disconnect,
2060         .add_key = lbs_cfg_add_key,
2061         .del_key = lbs_cfg_del_key,
2062         .set_default_key = lbs_cfg_set_default_key,
2063         .get_station = lbs_cfg_get_station,
2064         .dump_survey = lbs_get_survey,
2065         .change_virtual_intf = lbs_change_intf,
2066         .join_ibss = lbs_join_ibss,
2067         .leave_ibss = lbs_leave_ibss,
2068 };
2069
2070
2071 /*
2072  * At this time lbs_private *priv doesn't even exist, so we just allocate
2073  * memory and don't initialize the wiphy further. This is postponed until we
2074  * can talk to the firmware and happens at registration time in
2075  * lbs_cfg_wiphy_register().
2076  */
2077 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2078 {
2079         int ret = 0;
2080         struct wireless_dev *wdev;
2081
2082         lbs_deb_enter(LBS_DEB_CFG80211);
2083
2084         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2085         if (!wdev) {
2086                 dev_err(dev, "cannot allocate wireless device\n");
2087                 return ERR_PTR(-ENOMEM);
2088         }
2089
2090         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2091         if (!wdev->wiphy) {
2092                 dev_err(dev, "cannot allocate wiphy\n");
2093                 ret = -ENOMEM;
2094                 goto err_wiphy_new;
2095         }
2096
2097         lbs_deb_leave(LBS_DEB_CFG80211);
2098         return wdev;
2099
2100  err_wiphy_new:
2101         kfree(wdev);
2102         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2103         return ERR_PTR(ret);
2104 }
2105
2106
2107 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2108 {
2109         struct region_code_mapping {
2110                 const char *cn;
2111                 int code;
2112         };
2113
2114         /* Section 5.17.2 */
2115         static const struct region_code_mapping regmap[] = {
2116                 {"US ", 0x10}, /* US FCC */
2117                 {"CA ", 0x20}, /* Canada */
2118                 {"EU ", 0x30}, /* ETSI   */
2119                 {"ES ", 0x31}, /* Spain  */
2120                 {"FR ", 0x32}, /* France */
2121                 {"JP ", 0x40}, /* Japan  */
2122         };
2123         size_t i;
2124
2125         lbs_deb_enter(LBS_DEB_CFG80211);
2126
2127         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2128                 if (regmap[i].code == priv->regioncode) {
2129                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2130                         break;
2131                 }
2132
2133         lbs_deb_leave(LBS_DEB_CFG80211);
2134 }
2135
2136
2137 /*
2138  * This function get's called after lbs_setup_firmware() determined the
2139  * firmware capabities. So we can setup the wiphy according to our
2140  * hardware/firmware.
2141  */
2142 int lbs_cfg_register(struct lbs_private *priv)
2143 {
2144         struct wireless_dev *wdev = priv->wdev;
2145         int ret;
2146
2147         lbs_deb_enter(LBS_DEB_CFG80211);
2148
2149         wdev->wiphy->max_scan_ssids = 1;
2150         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2151
2152         wdev->wiphy->interface_modes =
2153                         BIT(NL80211_IFTYPE_STATION) |
2154                         BIT(NL80211_IFTYPE_ADHOC);
2155         if (lbs_rtap_supported(priv))
2156                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2157         if (lbs_mesh_activated(priv))
2158                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2159
2160         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2161
2162         /*
2163          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2164          * never seen a firmware without WPA
2165          */
2166         wdev->wiphy->cipher_suites = cipher_suites;
2167         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2168         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2169
2170         ret = wiphy_register(wdev->wiphy);
2171         if (ret < 0)
2172                 pr_err("cannot register wiphy device\n");
2173
2174         priv->wiphy_registered = true;
2175
2176         ret = register_netdev(priv->dev);
2177         if (ret)
2178                 pr_err("cannot register network device\n");
2179
2180         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2181
2182         lbs_cfg_set_regulatory_hint(priv);
2183
2184         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2185         return ret;
2186 }
2187
2188 int lbs_reg_notifier(struct wiphy *wiphy,
2189                 struct regulatory_request *request)
2190 {
2191         struct lbs_private *priv = wiphy_priv(wiphy);
2192         int ret;
2193
2194         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2195                         "callback for domain %c%c\n", request->alpha2[0],
2196                         request->alpha2[1]);
2197
2198         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2199
2200         lbs_deb_leave(LBS_DEB_CFG80211);
2201         return ret;
2202 }
2203
2204 void lbs_scan_deinit(struct lbs_private *priv)
2205 {
2206         lbs_deb_enter(LBS_DEB_CFG80211);
2207         cancel_delayed_work_sync(&priv->scan_work);
2208 }
2209
2210
2211 void lbs_cfg_free(struct lbs_private *priv)
2212 {
2213         struct wireless_dev *wdev = priv->wdev;
2214
2215         lbs_deb_enter(LBS_DEB_CFG80211);
2216
2217         if (!wdev)
2218                 return;
2219
2220         if (priv->wiphy_registered)
2221                 wiphy_unregister(wdev->wiphy);
2222
2223         if (wdev->wiphy)
2224                 wiphy_free(wdev->wiphy);
2225
2226         kfree(wdev);
2227 }