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 cfg80211_bss *bss;
 489         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 490         int bsssize;
 491         const u8 *pos;
 492         const u8 *tsfdesc;
 493         int tsfsize;
 494         int i;
 495         int ret = -EILSEQ;
 496
 497         lbs_deb_enter(LBS_DEB_CFG80211);
 498
 499         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 500
 501         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 502                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 503
 504         if (scanresp->nr_sets == 0) {
 505                 ret = 0;
 506                 goto done;
 507         }
 508
 509         /*
 510          * The general layout of the scan response is described in chapter
 511          * 5.7.1. Basically we have a common part, then any number of BSS
 512          * descriptor sections. Finally we have section with the same number
 513          * of TSFs.
 514          *
 515          * cmd_ds_802_11_scan_rsp
 516          *   cmd_header
 517          *   pos_size
 518          *   nr_sets
 519          *   bssdesc 1
 520          *     bssid
 521          *     rssi
 522          *     timestamp
 523          *     intvl
 524          *     capa
 525          *     IEs
 526          *   bssdesc 2
 527          *   bssdesc n
 528          *   MrvlIEtypes_TsfFimestamp_t
 529          *     TSF for BSS 1
 530          *     TSF for BSS 2
 531          *     TSF for BSS n
 532          */
 533
 534         pos = scanresp->bssdesc_and_tlvbuffer;
 535
 536         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 537                         scanresp->bssdescriptsize);
 538
 539         tsfdesc = pos + bsssize;
 540         tsfsize = 4 + 8 * scanresp->nr_sets;
 541         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 542
 543         /* Validity check: we expect a Marvell-Local TLV */
 544         i = get_unaligned_le16(tsfdesc);
 545         tsfdesc += 2;
 546         if (i != TLV_TYPE_TSFTIMESTAMP) {
 547                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 548                 goto done;
 549         }
 550
 551         /*
 552          * Validity check: the TLV holds TSF values with 8 bytes each, so
 553          * the size in the TLV must match the nr_sets value
 554          */
 555         i = get_unaligned_le16(tsfdesc);
 556         tsfdesc += 2;
 557         if (i / 8 != scanresp->nr_sets) {
 558                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 559                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 560                              i / 8);
 561                 goto done;
 562         }
 563
 564         for (i = 0; i < scanresp->nr_sets; i++) {
 565                 const u8 *bssid;
 566                 const u8 *ie;
 567                 int left;
 568                 int ielen;
 569                 int rssi;
 570                 u16 intvl;
 571                 u16 capa;
 572                 int chan_no = -1;
 573                 const u8 *ssid = NULL;
 574                 u8 ssid_len = 0;
 575                 DECLARE_SSID_BUF(ssid_buf);
 576
 577                 int len = get_unaligned_le16(pos);
 578                 pos += 2;
 579
 580                 /* BSSID */
 581                 bssid = pos;
 582                 pos += ETH_ALEN;
 583                 /* RSSI */
 584                 rssi = *pos++;
 585                 /* Packet time stamp */
 586                 pos += 8;
 587                 /* Beacon interval */
 588                 intvl = get_unaligned_le16(pos);
 589                 pos += 2;
 590                 /* Capabilities */
 591                 capa = get_unaligned_le16(pos);
 592                 pos += 2;
 593
 594                 /* To find out the channel, we must parse the IEs */
 595                 ie = pos;
 596                 /*
 597                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 598                  * interval, capabilities
 599                  */
 600                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 601                 while (left >= 2) {
 602                         u8 id, elen;
 603                         id = *pos++;
 604                         elen = *pos++;
 605                         left -= 2;
 606                         if (elen > left || elen == 0) {
 607                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 608                                 goto done;
 609                         }
 610
 611                         if (id == WLAN_EID_DS_PARAMS)
 612                                 chan_no = *pos;
 613                         if (id == WLAN_EID_SSID) {
 614                                 ssid = pos;
 615                                 ssid_len = elen;
 616                         }
 617                         left -= elen;
 618                         pos += elen;
 619                 }
 620
 621                 /* No channel, no luck */
 622                 if (chan_no != -1) {
 623                         struct wiphy *wiphy = priv->wdev->wiphy;
 624                         int freq = ieee80211_channel_to_frequency(chan_no,
 625                                                         IEEE80211_BAND_2GHZ);
 626                         struct ieee80211_channel *channel =
 627                                 ieee80211_get_channel(wiphy, freq);
 628
 629                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 630                                      "%d dBm\n",
 631                                      bssid, capa, chan_no,
 632                                      print_ssid(ssid_buf, ssid, ssid_len),
 633                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 634
 635                         if (channel &&
 636                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 637                                 bss = cfg80211_inform_bss(wiphy, channel,
 638                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 639                                         capa, intvl, ie, ielen,
 640                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 641                                         GFP_KERNEL);
 642                                 cfg80211_put_bss(bss);
 643                         }
 644                 } else
 645                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 646
 647                 tsfdesc += 8;
 648         }
 649         ret = 0;
 650
 651  done:
 652         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 653         return ret;
 654 }
 655
 656
 657 /*
 658  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 659  * TLV and a rates TLV. Determine the maximum size of them:
 660  */
 661 #define LBS_SCAN_MAX_CMD_SIZE                   \
 662         (sizeof(struct cmd_ds_802_11_scan)      \
 663          + LBS_MAX_SSID_TLV_SIZE                \
 664          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 665          + LBS_MAX_RATES_TLV_SIZE)
 666
 667 /*
 668  * Assumes priv->scan_req is initialized and valid
 669  * Assumes priv->scan_channel is initialized
 670  */
 671 static void lbs_scan_worker(struct work_struct *work)
 672 {
 673         struct lbs_private *priv =
 674                 container_of(work, struct lbs_private, scan_work.work);
 675         struct cmd_ds_802_11_scan *scan_cmd;
 676         u8 *tlv; /* pointer into our current, growing TLV storage area */
 677         int last_channel;
 678         int running, carrier;
 679
 680         lbs_deb_enter(LBS_DEB_SCAN);
 681
 682         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 683         if (scan_cmd == NULL)
 684                 goto out_no_scan_cmd;
 685
 686         /* prepare fixed part of scan command */
 687         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 688
 689         /* stop network while we're away from our main channel */
 690         running = !netif_queue_stopped(priv->dev);
 691         carrier = netif_carrier_ok(priv->dev);
 692         if (running)
 693                 netif_stop_queue(priv->dev);
 694         if (carrier)
 695                 netif_carrier_off(priv->dev);
 696
 697         /* prepare fixed part of scan command */
 698         tlv = scan_cmd->tlvbuffer;
 699
 700         /* add SSID TLV */
 701         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 702                 tlv += lbs_add_ssid_tlv(tlv,
 703                                         priv->scan_req->ssids[0].ssid,
 704                                         priv->scan_req->ssids[0].ssid_len);
 705
 706         /* add channel TLVs */
 707         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 708         if (last_channel > priv->scan_req->n_channels)
 709                 last_channel = priv->scan_req->n_channels;
 710         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 711                 priv->scan_req->n_ssids);
 712
 713         /* add rates TLV */
 714         tlv += lbs_add_supported_rates_tlv(tlv);
 715
 716         if (priv->scan_channel < priv->scan_req->n_channels) {
 717                 cancel_delayed_work(&priv->scan_work);
 718                 if (netif_running(priv->dev))
 719                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 720                                 msecs_to_jiffies(300));
 721         }
 722
 723         /* This is the final data we are about to send */
 724         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 725         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 726                     sizeof(*scan_cmd));
 727         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 728                     tlv - scan_cmd->tlvbuffer);
 729
 730         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 731                 le16_to_cpu(scan_cmd->hdr.size),
 732                 lbs_ret_scan, 0);
 733
 734         if (priv->scan_channel >= priv->scan_req->n_channels)
 735                 /* Mark scan done */
 736                 lbs_scan_done(priv);
 737
 738         /* Restart network */
 739         if (carrier)
 740                 netif_carrier_on(priv->dev);
 741         if (running && !priv->tx_pending_len)
 742                 netif_wake_queue(priv->dev);
 743
 744         kfree(scan_cmd);
 745
 746         /* Wake up anything waiting on scan completion */
 747         if (priv->scan_req == NULL) {
 748                 lbs_deb_scan("scan: waking up waiters\n");
 749                 wake_up_all(&priv->scan_q);
 750         }
 751
 752  out_no_scan_cmd:
 753         lbs_deb_leave(LBS_DEB_SCAN);
 754 }
 755
 756 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 757         struct cfg80211_scan_request *request)
 758 {
 759         lbs_deb_enter(LBS_DEB_CFG80211);
 760
 761         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 762                 request->n_ssids, request->n_channels, request->ie_len);
 763
 764         priv->scan_channel = 0;
 765         queue_delayed_work(priv->work_thread, &priv->scan_work,
 766                 msecs_to_jiffies(50));
 767
 768         priv->scan_req = request;
 769         priv->internal_scan = internal;
 770
 771         lbs_deb_leave(LBS_DEB_CFG80211);
 772 }
 773
 774 /*
 775  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 776  */
 777 void lbs_scan_done(struct lbs_private *priv)
 778 {
 779         WARN_ON(!priv->scan_req);
 780
 781         if (priv->internal_scan)
 782                 kfree(priv->scan_req);
 783         else
 784                 cfg80211_scan_done(priv->scan_req, false);
 785
 786         priv->scan_req = NULL;
 787 }
 788
 789 static int lbs_cfg_scan(struct wiphy *wiphy,
 790         struct net_device *dev,
 791         struct cfg80211_scan_request *request)
 792 {
 793         struct lbs_private *priv = wiphy_priv(wiphy);
 794         int ret = 0;
 795
 796         lbs_deb_enter(LBS_DEB_CFG80211);
 797
 798         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 799                 /* old scan request not yet processed */
 800                 ret = -EAGAIN;
 801                 goto out;
 802         }
 803
 804         _internal_start_scan(priv, false, request);
 805
 806         if (priv->surpriseremoved)
 807                 ret = -EIO;
 808
 809  out:
 810         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 811         return ret;
 812 }
 813
 814
 815
 816
 817 /*
 818  * Events
 819  */
 820
 821 void lbs_send_disconnect_notification(struct lbs_private *priv)
 822 {
 823         lbs_deb_enter(LBS_DEB_CFG80211);
 824
 825         cfg80211_disconnected(priv->dev,
 826                 0,
 827                 NULL, 0,
 828                 GFP_KERNEL);
 829
 830         lbs_deb_leave(LBS_DEB_CFG80211);
 831 }
 832
 833 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 834 {
 835         lbs_deb_enter(LBS_DEB_CFG80211);
 836
 837         cfg80211_michael_mic_failure(priv->dev,
 838                 priv->assoc_bss,
 839                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 840                         NL80211_KEYTYPE_GROUP :
 841                         NL80211_KEYTYPE_PAIRWISE,
 842                 -1,
 843                 NULL,
 844                 GFP_KERNEL);
 845
 846         lbs_deb_leave(LBS_DEB_CFG80211);
 847 }
 848
 849
 850
 851
 852 /*
 853  * Connect/disconnect
 854  */
 855
 856
 857 /*
 858  * This removes all WEP keys
 859  */
 860 static int lbs_remove_wep_keys(struct lbs_private *priv)
 861 {
 862         struct cmd_ds_802_11_set_wep cmd;
 863         int ret;
 864
 865         lbs_deb_enter(LBS_DEB_CFG80211);
 866
 867         memset(&cmd, 0, sizeof(cmd));
 868         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 869         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 870         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 871
 872         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 873
 874         lbs_deb_leave(LBS_DEB_CFG80211);
 875         return ret;
 876 }
 877
 878 /*
 879  * Set WEP keys
 880  */
 881 static int lbs_set_wep_keys(struct lbs_private *priv)
 882 {
 883         struct cmd_ds_802_11_set_wep cmd;
 884         int i;
 885         int ret;
 886
 887         lbs_deb_enter(LBS_DEB_CFG80211);
 888
 889         /*
 890          * command         13 00
 891          * size            50 00
 892          * sequence        xx xx
 893          * result          00 00
 894          * action          02 00     ACT_ADD
 895          * transmit key    00 00
 896          * type for key 1  01        WEP40
 897          * type for key 2  00
 898          * type for key 3  00
 899          * type for key 4  00
 900          * key 1           39 39 39 39 39 00 00 00
 901          *                 00 00 00 00 00 00 00 00
 902          * key 2           00 00 00 00 00 00 00 00
 903          *                 00 00 00 00 00 00 00 00
 904          * key 3           00 00 00 00 00 00 00 00
 905          *                 00 00 00 00 00 00 00 00
 906          * key 4           00 00 00 00 00 00 00 00
 907          */
 908         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 909             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 910                 /* Only set wep keys if we have at least one of them */
 911                 memset(&cmd, 0, sizeof(cmd));
 912                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 913                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 914                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 915
 916                 for (i = 0; i < 4; i++) {
 917                         switch (priv->wep_key_len[i]) {
 918                         case WLAN_KEY_LEN_WEP40:
 919                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 920                                 break;
 921                         case WLAN_KEY_LEN_WEP104:
 922                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 923                                 break;
 924                         default:
 925                                 cmd.keytype[i] = 0;
 926                                 break;
 927                         }
 928                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 929                                priv->wep_key_len[i]);
 930                 }
 931
 932                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 933         } else {
 934                 /* Otherwise remove all wep keys */
 935                 ret = lbs_remove_wep_keys(priv);
 936         }
 937
 938         lbs_deb_leave(LBS_DEB_CFG80211);
 939         return ret;
 940 }
 941
 942
 943 /*
 944  * Enable/Disable RSN status
 945  */
 946 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 947 {
 948         struct cmd_ds_802_11_enable_rsn cmd;
 949         int ret;
 950
 951         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 952
 953         /*
 954          * cmd       2f 00
 955          * size      0c 00
 956          * sequence  xx xx
 957          * result    00 00
 958          * action    01 00    ACT_SET
 959          * enable    01 00
 960          */
 961         memset(&cmd, 0, sizeof(cmd));
 962         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 963         cmd.action = cpu_to_le16(CMD_ACT_SET);
 964         cmd.enable = cpu_to_le16(enable);
 965
 966         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 967
 968         lbs_deb_leave(LBS_DEB_CFG80211);
 969         return ret;
 970 }
 971
 972
 973 /*
 974  * Set WPA/WPA key material
 975  */
 976
 977 /*
 978  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 979  * get rid of WEXT, this should go into host.h
 980  */
 981
 982 struct cmd_key_material {
 983         struct cmd_header hdr;
 984
 985         __le16 action;
 986         struct MrvlIEtype_keyParamSet param;
 987 } __packed;
 988
 989 static int lbs_set_key_material(struct lbs_private *priv,
 990                                 int key_type,
 991                                 int key_info,
 992                                 u8 *key, u16 key_len)
 993 {
 994         struct cmd_key_material cmd;
 995         int ret;
 996
 997         lbs_deb_enter(LBS_DEB_CFG80211);
 998
 999         /*
1000          * Example for WPA (TKIP):
1001          *
1002          * cmd       5e 00
1003          * size      34 00
1004          * sequence  xx xx
1005          * result    00 00
1006          * action    01 00
1007          * TLV type  00 01    key param
1008          * length    00 26
1009          * key type  01 00    TKIP
1010          * key info  06 00    UNICAST | ENABLED
1011          * key len   20 00
1012          * key       32 bytes
1013          */
1014         memset(&cmd, 0, sizeof(cmd));
1015         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1016         cmd.action = cpu_to_le16(CMD_ACT_SET);
1017         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1018         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1019         cmd.param.keytypeid = cpu_to_le16(key_type);
1020         cmd.param.keyinfo = cpu_to_le16(key_info);
1021         cmd.param.keylen = cpu_to_le16(key_len);
1022         if (key && key_len)
1023                 memcpy(cmd.param.key, key, key_len);
1024
1025         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1026
1027         lbs_deb_leave(LBS_DEB_CFG80211);
1028         return ret;
1029 }
1030
1031
1032 /*
1033  * Sets the auth type (open, shared, etc) in the firmware. That
1034  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1035  * command doesn't send an authentication frame at all, it just
1036  * stores the auth_type.
1037  */
1038 static int lbs_set_authtype(struct lbs_private *priv,
1039                             struct cfg80211_connect_params *sme)
1040 {
1041         struct cmd_ds_802_11_authenticate cmd;
1042         int ret;
1043
1044         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1045
1046         /*
1047          * cmd        11 00
1048          * size       19 00
1049          * sequence   xx xx
1050          * result     00 00
1051          * BSS id     00 13 19 80 da 30
1052          * auth type  00
1053          * reserved   00 00 00 00 00 00 00 00 00 00
1054          */
1055         memset(&cmd, 0, sizeof(cmd));
1056         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1057         if (sme->bssid)
1058                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1059         /* convert auth_type */
1060         ret = lbs_auth_to_authtype(sme->auth_type);
1061         if (ret < 0)
1062                 goto done;
1063
1064         cmd.authtype = ret;
1065         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1066
1067  done:
1068         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1069         return ret;
1070 }
1071
1072
1073 /*
1074  * Create association request
1075  */
1076 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1077         (sizeof(struct cmd_ds_802_11_associate)    \
1078          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1079          + LBS_MAX_SSID_TLV_SIZE                   \
1080          + LBS_MAX_CHANNEL_TLV_SIZE                \
1081          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1082          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1083          + LBS_MAX_WPA_TLV_SIZE)
1084
1085 static int lbs_associate(struct lbs_private *priv,
1086                 struct cfg80211_bss *bss,
1087                 struct cfg80211_connect_params *sme)
1088 {
1089         struct cmd_ds_802_11_associate_response *resp;
1090         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1091                                                       GFP_KERNEL);
1092         const u8 *ssid_eid;
1093         size_t len, resp_ie_len;
1094         int status;
1095         int ret;
1096         u8 *pos = &(cmd->iebuf[0]);
1097         u8 *tmp;
1098
1099         lbs_deb_enter(LBS_DEB_CFG80211);
1100
1101         if (!cmd) {
1102                 ret = -ENOMEM;
1103                 goto done;
1104         }
1105
1106         /*
1107          * cmd              50 00
1108          * length           34 00
1109          * sequence         xx xx
1110          * result           00 00
1111          * BSS id           00 13 19 80 da 30
1112          * capabilities     11 00
1113          * listen interval  0a 00
1114          * beacon interval  00 00
1115          * DTIM period      00
1116          * TLVs             xx   (up to 512 bytes)
1117          */
1118         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1119
1120         /* Fill in static fields */
1121         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1122         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1123         cmd->capability = cpu_to_le16(bss->capability);
1124
1125         /* add SSID TLV */
1126         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1127         if (ssid_eid)
1128                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1129         else
1130                 lbs_deb_assoc("no SSID\n");
1131
1132         /* add DS param TLV */
1133         if (bss->channel)
1134                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1135         else
1136                 lbs_deb_assoc("no channel\n");
1137
1138         /* add (empty) CF param TLV */
1139         pos += lbs_add_cf_param_tlv(pos);
1140
1141         /* add rates TLV */
1142         tmp = pos + 4; /* skip Marvell IE header */
1143         pos += lbs_add_common_rates_tlv(pos, bss);
1144         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1145
1146         /* add auth type TLV */
1147         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1148                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1149
1150         /* add WPA/WPA2 TLV */
1151         if (sme->ie && sme->ie_len)
1152                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1153
1154         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1155                 (u16)(pos - (u8 *) &cmd->iebuf);
1156         cmd->hdr.size = cpu_to_le16(len);
1157
1158         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1159                         le16_to_cpu(cmd->hdr.size));
1160
1161         /* store for later use */
1162         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1163
1164         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1165         if (ret)
1166                 goto done;
1167
1168         /* generate connect message to cfg80211 */
1169
1170         resp = (void *) cmd; /* recast for easier field access */
1171         status = le16_to_cpu(resp->statuscode);
1172
1173         /* Older FW versions map the IEEE 802.11 Status Code in the association
1174          * response to the following values returned in resp->statuscode:
1175          *
1176          *    IEEE Status Code                Marvell Status Code
1177          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1178          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1179          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1180          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1181          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1182          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1183          *
1184          * Other response codes:
1185          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1186          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1187          *                                    association response from the AP)
1188          */
1189         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1190                 switch (status) {
1191                 case 0:
1192                         break;
1193                 case 1:
1194                         lbs_deb_assoc("invalid association parameters\n");
1195                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1196                         break;
1197                 case 2:
1198                         lbs_deb_assoc("timer expired while waiting for AP\n");
1199                         status = WLAN_STATUS_AUTH_TIMEOUT;
1200                         break;
1201                 case 3:
1202                         lbs_deb_assoc("association refused by AP\n");
1203                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1204                         break;
1205                 case 4:
1206                         lbs_deb_assoc("authentication refused by AP\n");
1207                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1208                         break;
1209                 default:
1210                         lbs_deb_assoc("association failure %d\n", status);
1211                         /* v5 OLPC firmware does return the AP status code if
1212                          * it's not one of the values above.  Let that through.
1213                          */
1214                         break;
1215                 }
1216         }
1217
1218         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1219                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1220                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1221
1222         resp_ie_len = le16_to_cpu(resp->hdr.size)
1223                 - sizeof(resp->hdr)
1224                 - 6;
1225         cfg80211_connect_result(priv->dev,
1226                                 priv->assoc_bss,
1227                                 sme->ie, sme->ie_len,
1228                                 resp->iebuf, resp_ie_len,
1229                                 status,
1230                                 GFP_KERNEL);
1231
1232         if (status == 0) {
1233                 /* TODO: get rid of priv->connect_status */
1234                 priv->connect_status = LBS_CONNECTED;
1235                 netif_carrier_on(priv->dev);
1236                 if (!priv->tx_pending_len)
1237                         netif_tx_wake_all_queues(priv->dev);
1238         }
1239
1240 done:
1241         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1242         return ret;
1243 }
1244
1245 static struct cfg80211_scan_request *
1246 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1247 {
1248         struct cfg80211_scan_request *creq = NULL;
1249         int i, n_channels = 0;
1250         enum ieee80211_band band;
1251
1252         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1253                 if (wiphy->bands[band])
1254                         n_channels += wiphy->bands[band]->n_channels;
1255         }
1256
1257         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1258                        n_channels * sizeof(void *),
1259                        GFP_ATOMIC);
1260         if (!creq)
1261                 return NULL;
1262
1263         /* SSIDs come after channels */
1264         creq->ssids = (void *)&creq->channels[n_channels];
1265         creq->n_channels = n_channels;
1266         creq->n_ssids = 1;
1267
1268         /* Scan all available channels */
1269         i = 0;
1270         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1271                 int j;
1272
1273                 if (!wiphy->bands[band])
1274                         continue;
1275
1276                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1277                         /* ignore disabled channels */
1278                         if (wiphy->bands[band]->channels[j].flags &
1279                                                 IEEE80211_CHAN_DISABLED)
1280                                 continue;
1281
1282                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1283                         i++;
1284                 }
1285         }
1286         if (i) {
1287                 /* Set real number of channels specified in creq->channels[] */
1288                 creq->n_channels = i;
1289
1290                 /* Scan for the SSID we're going to connect to */
1291                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1292                 creq->ssids[0].ssid_len = sme->ssid_len;
1293         } else {
1294                 /* No channels found... */
1295                 kfree(creq);
1296                 creq = NULL;
1297         }
1298
1299         return creq;
1300 }
1301
1302 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1303                            struct cfg80211_connect_params *sme)
1304 {
1305         struct lbs_private *priv = wiphy_priv(wiphy);
1306         struct cfg80211_bss *bss = NULL;
1307         int ret = 0;
1308         u8 preamble = RADIO_PREAMBLE_SHORT;
1309
1310         if (dev == priv->mesh_dev)
1311                 return -EOPNOTSUPP;
1312
1313         lbs_deb_enter(LBS_DEB_CFG80211);
1314
1315         if (!sme->bssid) {
1316                 struct cfg80211_scan_request *creq;
1317
1318                 /*
1319                  * Scan for the requested network after waiting for existing
1320                  * scans to finish.
1321                  */
1322                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1323                 wait_event_interruptible_timeout(priv->scan_q,
1324                                                  (priv->scan_req == NULL),
1325                                                  (15 * HZ));
1326
1327                 creq = _new_connect_scan_req(wiphy, sme);
1328                 if (!creq) {
1329                         ret = -EINVAL;
1330                         goto done;
1331                 }
1332
1333                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1334                 _internal_start_scan(priv, true, creq);
1335
1336                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1337                 wait_event_interruptible_timeout(priv->scan_q,
1338                                                  (priv->scan_req == NULL),
1339                                                  (15 * HZ));
1340                 lbs_deb_assoc("assoc: scanning competed\n");
1341         }
1342
1343         /* Find the BSS we want using available scan results */
1344         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1345                 sme->ssid, sme->ssid_len,
1346                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1347         if (!bss) {
1348                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1349                           sme->bssid);
1350                 ret = -ENOENT;
1351                 goto done;
1352         }
1353         lbs_deb_assoc("trying %pM\n", bss->bssid);
1354         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1355                       sme->crypto.cipher_group,
1356                       sme->key_idx, sme->key_len);
1357
1358         /* As this is a new connection, clear locally stored WEP keys */
1359         priv->wep_tx_key = 0;
1360         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1361         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1362
1363         /* set/remove WEP keys */
1364         switch (sme->crypto.cipher_group) {
1365         case WLAN_CIPHER_SUITE_WEP40:
1366         case WLAN_CIPHER_SUITE_WEP104:
1367                 /* Store provided WEP keys in priv-> */
1368                 priv->wep_tx_key = sme->key_idx;
1369                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1370                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1371                 /* Set WEP keys and WEP mode */
1372                 lbs_set_wep_keys(priv);
1373                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1374                 lbs_set_mac_control(priv);
1375                 /* No RSN mode for WEP */
1376                 lbs_enable_rsn(priv, 0);
1377                 break;
1378         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1379                 /*
1380                  * If we don't have no WEP, no WPA and no WPA2,
1381                  * we remove all keys like in the WPA/WPA2 setup,
1382                  * we just don't set RSN.
1383                  *
1384                  * Therefore: fall-through
1385                  */
1386         case WLAN_CIPHER_SUITE_TKIP:
1387         case WLAN_CIPHER_SUITE_CCMP:
1388                 /* Remove WEP keys and WEP mode */
1389                 lbs_remove_wep_keys(priv);
1390                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1391                 lbs_set_mac_control(priv);
1392
1393                 /* clear the WPA/WPA2 keys */
1394                 lbs_set_key_material(priv,
1395                         KEY_TYPE_ID_WEP, /* doesn't matter */
1396                         KEY_INFO_WPA_UNICAST,
1397                         NULL, 0);
1398                 lbs_set_key_material(priv,
1399                         KEY_TYPE_ID_WEP, /* doesn't matter */
1400                         KEY_INFO_WPA_MCAST,
1401                         NULL, 0);
1402                 /* RSN mode for WPA/WPA2 */
1403                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1404                 break;
1405         default:
1406                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1407                           sme->crypto.cipher_group);
1408                 ret = -ENOTSUPP;
1409                 goto done;
1410         }
1411
1412         lbs_set_authtype(priv, sme);
1413         lbs_set_radio(priv, preamble, 1);
1414
1415         /* Do the actual association */
1416         ret = lbs_associate(priv, bss, sme);
1417
1418  done:
1419         if (bss)
1420                 cfg80211_put_bss(bss);
1421         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1422         return ret;
1423 }
1424
1425 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1426 {
1427         struct cmd_ds_802_11_deauthenticate cmd;
1428         int ret;
1429
1430         memset(&cmd, 0, sizeof(cmd));
1431         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1432         /* Mildly ugly to use a locally store my own BSSID ... */
1433         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1434         cmd.reasoncode = cpu_to_le16(reason);
1435
1436         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1437         if (ret)
1438                 return ret;
1439
1440         cfg80211_disconnected(priv->dev,
1441                         reason,
1442                         NULL, 0,
1443                         GFP_KERNEL);
1444         priv->connect_status = LBS_DISCONNECTED;
1445
1446         return 0;
1447 }
1448
1449 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1450         u16 reason_code)
1451 {
1452         struct lbs_private *priv = wiphy_priv(wiphy);
1453
1454         if (dev == priv->mesh_dev)
1455                 return -EOPNOTSUPP;
1456
1457         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1458
1459         /* store for lbs_cfg_ret_disconnect() */
1460         priv->disassoc_reason = reason_code;
1461
1462         return lbs_disconnect(priv, reason_code);
1463 }
1464
1465 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1466                                    struct net_device *netdev,
1467                                    u8 key_index, bool unicast,
1468                                    bool multicast)
1469 {
1470         struct lbs_private *priv = wiphy_priv(wiphy);
1471
1472         if (netdev == priv->mesh_dev)
1473                 return -EOPNOTSUPP;
1474
1475         lbs_deb_enter(LBS_DEB_CFG80211);
1476
1477         if (key_index != priv->wep_tx_key) {
1478                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1479                 priv->wep_tx_key = key_index;
1480                 lbs_set_wep_keys(priv);
1481         }
1482
1483         return 0;
1484 }
1485
1486
1487 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1488                            u8 idx, bool pairwise, const u8 *mac_addr,
1489                            struct key_params *params)
1490 {
1491         struct lbs_private *priv = wiphy_priv(wiphy);
1492         u16 key_info;
1493         u16 key_type;
1494         int ret = 0;
1495
1496         if (netdev == priv->mesh_dev)
1497                 return -EOPNOTSUPP;
1498
1499         lbs_deb_enter(LBS_DEB_CFG80211);
1500
1501         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1502                       params->cipher, mac_addr);
1503         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1504                       idx, params->key_len);
1505         if (params->key_len)
1506                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1507                             params->key, params->key_len);
1508
1509         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1510         if (params->seq_len)
1511                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1512                             params->seq, params->seq_len);
1513
1514         switch (params->cipher) {
1515         case WLAN_CIPHER_SUITE_WEP40:
1516         case WLAN_CIPHER_SUITE_WEP104:
1517                 /* actually compare if something has changed ... */
1518                 if ((priv->wep_key_len[idx] != params->key_len) ||
1519                         memcmp(priv->wep_key[idx],
1520                                params->key, params->key_len) != 0) {
1521                         priv->wep_key_len[idx] = params->key_len;
1522                         memcpy(priv->wep_key[idx],
1523                                params->key, params->key_len);
1524                         lbs_set_wep_keys(priv);
1525                 }
1526                 break;
1527         case WLAN_CIPHER_SUITE_TKIP:
1528         case WLAN_CIPHER_SUITE_CCMP:
1529                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1530                                                    ? KEY_INFO_WPA_UNICAST
1531                                                    : KEY_INFO_WPA_MCAST);
1532                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1533                         ? KEY_TYPE_ID_TKIP
1534                         : KEY_TYPE_ID_AES;
1535                 lbs_set_key_material(priv,
1536                                      key_type,
1537                                      key_info,
1538                                      params->key, params->key_len);
1539                 break;
1540         default:
1541                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1542                 ret = -ENOTSUPP;
1543                 break;
1544         }
1545
1546         return ret;
1547 }
1548
1549
1550 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1551                            u8 key_index, bool pairwise, const u8 *mac_addr)
1552 {
1553
1554         lbs_deb_enter(LBS_DEB_CFG80211);
1555
1556         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1557                       key_index, mac_addr);
1558
1559 #ifdef TODO
1560         struct lbs_private *priv = wiphy_priv(wiphy);
1561         /*
1562          * I think can keep this a NO-OP, because:
1563
1564          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1565          * - neither "iw" nor "wpa_supplicant" won't call this during
1566          *   an ongoing connection
1567          * - TODO: but I have to check if this is still true when
1568          *   I set the AP to periodic re-keying
1569          * - we've not kzallec() something when we've added a key at
1570          *   lbs_cfg_connect() or lbs_cfg_add_key().
1571          *
1572          * This causes lbs_cfg_del_key() only called at disconnect time,
1573          * where we'd just waste time deleting a key that is not going
1574          * to be used anyway.
1575          */
1576         if (key_index < 3 && priv->wep_key_len[key_index]) {
1577                 priv->wep_key_len[key_index] = 0;
1578                 lbs_set_wep_keys(priv);
1579         }
1580 #endif
1581
1582         return 0;
1583 }
1584
1585
1586 /*
1587  * Get station
1588  */
1589
1590 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1591                               u8 *mac, struct station_info *sinfo)
1592 {
1593         struct lbs_private *priv = wiphy_priv(wiphy);
1594         s8 signal, noise;
1595         int ret;
1596         size_t i;
1597
1598         lbs_deb_enter(LBS_DEB_CFG80211);
1599
1600         sinfo->filled |= STATION_INFO_TX_BYTES |
1601                          STATION_INFO_TX_PACKETS |
1602                          STATION_INFO_RX_BYTES |
1603                          STATION_INFO_RX_PACKETS;
1604         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1605         sinfo->tx_packets = priv->dev->stats.tx_packets;
1606         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1607         sinfo->rx_packets = priv->dev->stats.rx_packets;
1608
1609         /* Get current RSSI */
1610         ret = lbs_get_rssi(priv, &signal, &noise);
1611         if (ret == 0) {
1612                 sinfo->signal = signal;
1613                 sinfo->filled |= STATION_INFO_SIGNAL;
1614         }
1615
1616         /* Convert priv->cur_rate from hw_value to NL80211 value */
1617         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1618                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1619                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1620                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1621                         break;
1622                 }
1623         }
1624
1625         return 0;
1626 }
1627
1628
1629
1630
1631 /*
1632  * "Site survey", here just current channel and noise level
1633  */
1634
1635 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1636         int idx, struct survey_info *survey)
1637 {
1638         struct lbs_private *priv = wiphy_priv(wiphy);
1639         s8 signal, noise;
1640         int ret;
1641
1642         if (dev == priv->mesh_dev)
1643                 return -EOPNOTSUPP;
1644
1645         if (idx != 0)
1646                 ret = -ENOENT;
1647
1648         lbs_deb_enter(LBS_DEB_CFG80211);
1649
1650         survey->channel = ieee80211_get_channel(wiphy,
1651                 ieee80211_channel_to_frequency(priv->channel,
1652                                                IEEE80211_BAND_2GHZ));
1653
1654         ret = lbs_get_rssi(priv, &signal, &noise);
1655         if (ret == 0) {
1656                 survey->filled = SURVEY_INFO_NOISE_DBM;
1657                 survey->noise = noise;
1658         }
1659
1660         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1661         return ret;
1662 }
1663
1664
1665
1666
1667 /*
1668  * Change interface
1669  */
1670
1671 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1672         enum nl80211_iftype type, u32 *flags,
1673                struct vif_params *params)
1674 {
1675         struct lbs_private *priv = wiphy_priv(wiphy);
1676         int ret = 0;
1677
1678         if (dev == priv->mesh_dev)
1679                 return -EOPNOTSUPP;
1680
1681         switch (type) {
1682         case NL80211_IFTYPE_MONITOR:
1683         case NL80211_IFTYPE_STATION:
1684         case NL80211_IFTYPE_ADHOC:
1685                 break;
1686         default:
1687                 return -EOPNOTSUPP;
1688         }
1689
1690         lbs_deb_enter(LBS_DEB_CFG80211);
1691
1692         if (priv->iface_running)
1693                 ret = lbs_set_iface_type(priv, type);
1694
1695         if (!ret)
1696                 priv->wdev->iftype = type;
1697
1698         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1699         return ret;
1700 }
1701
1702
1703
1704 /*
1705  * IBSS (Ad-Hoc)
1706  */
1707
1708 /*
1709  * The firmware needs the following bits masked out of the beacon-derived
1710  * capability field when associating/joining to a BSS:
1711  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1712  */
1713 #define CAPINFO_MASK (~(0xda00))
1714
1715
1716 static void lbs_join_post(struct lbs_private *priv,
1717                           struct cfg80211_ibss_params *params,
1718                           u8 *bssid, u16 capability)
1719 {
1720         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1721                    2 + 4 +                      /* basic rates */
1722                    2 + 1 +                      /* DS parameter */
1723                    2 + 2 +                      /* atim */
1724                    2 + 8];                      /* extended rates */
1725         u8 *fake = fake_ie;
1726         struct cfg80211_bss *bss;
1727
1728         lbs_deb_enter(LBS_DEB_CFG80211);
1729
1730         /*
1731          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1732          * the real IE from the firmware. So we fabricate a fake IE based on
1733          * what the firmware actually sends (sniffed with wireshark).
1734          */
1735         /* Fake SSID IE */
1736         *fake++ = WLAN_EID_SSID;
1737         *fake++ = params->ssid_len;
1738         memcpy(fake, params->ssid, params->ssid_len);
1739         fake += params->ssid_len;
1740         /* Fake supported basic rates IE */
1741         *fake++ = WLAN_EID_SUPP_RATES;
1742         *fake++ = 4;
1743         *fake++ = 0x82;
1744         *fake++ = 0x84;
1745         *fake++ = 0x8b;
1746         *fake++ = 0x96;
1747         /* Fake DS channel IE */
1748         *fake++ = WLAN_EID_DS_PARAMS;
1749         *fake++ = 1;
1750         *fake++ = params->channel->hw_value;
1751         /* Fake IBSS params IE */
1752         *fake++ = WLAN_EID_IBSS_PARAMS;
1753         *fake++ = 2;
1754         *fake++ = 0; /* ATIM=0 */
1755         *fake++ = 0;
1756         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1757          * but I don't know how this could be checked */
1758         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1759         *fake++ = 8;
1760         *fake++ = 0x0c;
1761         *fake++ = 0x12;
1762         *fake++ = 0x18;
1763         *fake++ = 0x24;
1764         *fake++ = 0x30;
1765         *fake++ = 0x48;
1766         *fake++ = 0x60;
1767         *fake++ = 0x6c;
1768         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1769
1770         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1771                                   params->channel,
1772                                   bssid,
1773                                   0,
1774                                   capability,
1775                                   params->beacon_interval,
1776                                   fake_ie, fake - fake_ie,
1777                                   0, GFP_KERNEL);
1778         cfg80211_put_bss(bss);
1779
1780         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1781         priv->wdev->ssid_len = params->ssid_len;
1782
1783         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1784
1785         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1786         priv->connect_status = LBS_CONNECTED;
1787         netif_carrier_on(priv->dev);
1788         if (!priv->tx_pending_len)
1789                 netif_wake_queue(priv->dev);
1790
1791         lbs_deb_leave(LBS_DEB_CFG80211);
1792 }
1793
1794 static int lbs_ibss_join_existing(struct lbs_private *priv,
1795         struct cfg80211_ibss_params *params,
1796         struct cfg80211_bss *bss)
1797 {
1798         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1799         struct cmd_ds_802_11_ad_hoc_join cmd;
1800         u8 preamble = RADIO_PREAMBLE_SHORT;
1801         int ret = 0;
1802
1803         lbs_deb_enter(LBS_DEB_CFG80211);
1804
1805         /* TODO: set preamble based on scan result */
1806         ret = lbs_set_radio(priv, preamble, 1);
1807         if (ret)
1808                 goto out;
1809
1810         /*
1811          * Example CMD_802_11_AD_HOC_JOIN command:
1812          *
1813          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1814          * size            65 00
1815          * sequence        xx xx
1816          * result          00 00
1817          * bssid           02 27 27 97 2f 96
1818          * ssid            49 42 53 53 00 00 00 00
1819          *                 00 00 00 00 00 00 00 00
1820          *                 00 00 00 00 00 00 00 00
1821          *                 00 00 00 00 00 00 00 00
1822          * type            02            CMD_BSS_TYPE_IBSS
1823          * beacon period   64 00
1824          * dtim period     00
1825          * timestamp       00 00 00 00 00 00 00 00
1826          * localtime       00 00 00 00 00 00 00 00
1827          * IE DS           03
1828          * IE DS len       01
1829          * IE DS channel   01
1830          * reserveed       00 00 00 00
1831          * IE IBSS         06
1832          * IE IBSS len     02
1833          * IE IBSS atim    00 00
1834          * reserved        00 00 00 00
1835          * capability      02 00
1836          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1837          * fail timeout    ff 00
1838          * probe delay     00 00
1839          */
1840         memset(&cmd, 0, sizeof(cmd));
1841         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1842
1843         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1844         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1845         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1846         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1847         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1848         cmd.bss.ds.header.len = 1;
1849         cmd.bss.ds.channel = params->channel->hw_value;
1850         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1851         cmd.bss.ibss.header.len = 2;
1852         cmd.bss.ibss.atimwindow = 0;
1853         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1854
1855         /* set rates to the intersection of our rates and the rates in the
1856            bss */
1857         if (!rates_eid) {
1858                 lbs_add_rates(cmd.bss.rates);
1859         } else {
1860                 int hw, i;
1861                 u8 rates_max = rates_eid[1];
1862                 u8 *rates = cmd.bss.rates;
1863                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1864                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1865                         for (i = 0; i < rates_max; i++) {
1866                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1867                                         u8 rate = rates_eid[i+2];
1868                                         if (rate == 0x02 || rate == 0x04 ||
1869                                             rate == 0x0b || rate == 0x16)
1870                                                 rate |= 0x80;
1871                                         *rates++ = rate;
1872                                 }
1873                         }
1874                 }
1875         }
1876
1877         /* Only v8 and below support setting this */
1878         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1879                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1880                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1881         }
1882         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1883         if (ret)
1884                 goto out;
1885
1886         /*
1887          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1888          *
1889          * response        2c 80
1890          * size            09 00
1891          * sequence        xx xx
1892          * result          00 00
1893          * reserved        00
1894          */
1895         lbs_join_post(priv, params, bss->bssid, bss->capability);
1896
1897  out:
1898         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1899         return ret;
1900 }
1901
1902
1903
1904 static int lbs_ibss_start_new(struct lbs_private *priv,
1905         struct cfg80211_ibss_params *params)
1906 {
1907         struct cmd_ds_802_11_ad_hoc_start cmd;
1908         struct cmd_ds_802_11_ad_hoc_result *resp =
1909                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1910         u8 preamble = RADIO_PREAMBLE_SHORT;
1911         int ret = 0;
1912         u16 capability;
1913
1914         lbs_deb_enter(LBS_DEB_CFG80211);
1915
1916         ret = lbs_set_radio(priv, preamble, 1);
1917         if (ret)
1918                 goto out;
1919
1920         /*
1921          * Example CMD_802_11_AD_HOC_START command:
1922          *
1923          * command         2b 00         CMD_802_11_AD_HOC_START
1924          * size            b1 00
1925          * sequence        xx xx
1926          * result          00 00
1927          * ssid            54 45 53 54 00 00 00 00
1928          *                 00 00 00 00 00 00 00 00
1929          *                 00 00 00 00 00 00 00 00
1930          *                 00 00 00 00 00 00 00 00
1931          * bss type        02
1932          * beacon period   64 00
1933          * dtim period     00
1934          * IE IBSS         06
1935          * IE IBSS len     02
1936          * IE IBSS atim    00 00
1937          * reserved        00 00 00 00
1938          * IE DS           03
1939          * IE DS len       01
1940          * IE DS channel   01
1941          * reserved        00 00 00 00
1942          * probe delay     00 00
1943          * capability      02 00
1944          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1945          *                 0c 12 18 24 30 48 60 6c
1946          * padding         100 bytes
1947          */
1948         memset(&cmd, 0, sizeof(cmd));
1949         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1950         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1951         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1952         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1953         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1954         cmd.ibss.header.len = 2;
1955         cmd.ibss.atimwindow = 0;
1956         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1957         cmd.ds.header.len = 1;
1958         cmd.ds.channel = params->channel->hw_value;
1959         /* Only v8 and below support setting probe delay */
1960         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1961                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1962         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1963         capability = WLAN_CAPABILITY_IBSS;
1964         cmd.capability = cpu_to_le16(capability);
1965         lbs_add_rates(cmd.rates);
1966
1967
1968         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1969         if (ret)
1970                 goto out;
1971
1972         /*
1973          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1974          *
1975          * response        2b 80
1976          * size            14 00
1977          * sequence        xx xx
1978          * result          00 00
1979          * reserved        00
1980          * bssid           02 2b 7b 0f 86 0e
1981          */
1982         lbs_join_post(priv, params, resp->bssid, capability);
1983
1984  out:
1985         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1986         return ret;
1987 }
1988
1989
1990 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1991                 struct cfg80211_ibss_params *params)
1992 {
1993         struct lbs_private *priv = wiphy_priv(wiphy);
1994         int ret = 0;
1995         struct cfg80211_bss *bss;
1996         DECLARE_SSID_BUF(ssid_buf);
1997
1998         if (dev == priv->mesh_dev)
1999                 return -EOPNOTSUPP;
2000
2001         lbs_deb_enter(LBS_DEB_CFG80211);
2002
2003         if (!params->channel) {
2004                 ret = -ENOTSUPP;
2005                 goto out;
2006         }
2007
2008         ret = lbs_set_channel(priv, params->channel->hw_value);
2009         if (ret)
2010                 goto out;
2011
2012         /* Search if someone is beaconing. This assumes that the
2013          * bss list is populated already */
2014         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2015                 params->ssid, params->ssid_len,
2016                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2017
2018         if (bss) {
2019                 ret = lbs_ibss_join_existing(priv, params, bss);
2020                 cfg80211_put_bss(bss);
2021         } else
2022                 ret = lbs_ibss_start_new(priv, params);
2023
2024
2025  out:
2026         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2027         return ret;
2028 }
2029
2030
2031 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2032 {
2033         struct lbs_private *priv = wiphy_priv(wiphy);
2034         struct cmd_ds_802_11_ad_hoc_stop cmd;
2035         int ret = 0;
2036
2037         if (dev == priv->mesh_dev)
2038                 return -EOPNOTSUPP;
2039
2040         lbs_deb_enter(LBS_DEB_CFG80211);
2041
2042         memset(&cmd, 0, sizeof(cmd));
2043         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2044         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2045
2046         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2047         lbs_mac_event_disconnected(priv);
2048
2049         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2050         return ret;
2051 }
2052
2053
2054
2055
2056 /*
2057  * Initialization
2058  */
2059
2060 static struct cfg80211_ops lbs_cfg80211_ops = {
2061         .set_channel = lbs_cfg_set_channel,
2062         .scan = lbs_cfg_scan,
2063         .connect = lbs_cfg_connect,
2064         .disconnect = lbs_cfg_disconnect,
2065         .add_key = lbs_cfg_add_key,
2066         .del_key = lbs_cfg_del_key,
2067         .set_default_key = lbs_cfg_set_default_key,
2068         .get_station = lbs_cfg_get_station,
2069         .dump_survey = lbs_get_survey,
2070         .change_virtual_intf = lbs_change_intf,
2071         .join_ibss = lbs_join_ibss,
2072         .leave_ibss = lbs_leave_ibss,
2073 };
2074
2075
2076 /*
2077  * At this time lbs_private *priv doesn't even exist, so we just allocate
2078  * memory and don't initialize the wiphy further. This is postponed until we
2079  * can talk to the firmware and happens at registration time in
2080  * lbs_cfg_wiphy_register().
2081  */
2082 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2083 {
2084         int ret = 0;
2085         struct wireless_dev *wdev;
2086
2087         lbs_deb_enter(LBS_DEB_CFG80211);
2088
2089         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2090         if (!wdev) {
2091                 dev_err(dev, "cannot allocate wireless device\n");
2092                 return ERR_PTR(-ENOMEM);
2093         }
2094
2095         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2096         if (!wdev->wiphy) {
2097                 dev_err(dev, "cannot allocate wiphy\n");
2098                 ret = -ENOMEM;
2099                 goto err_wiphy_new;
2100         }
2101
2102         lbs_deb_leave(LBS_DEB_CFG80211);
2103         return wdev;
2104
2105  err_wiphy_new:
2106         kfree(wdev);
2107         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2108         return ERR_PTR(ret);
2109 }
2110
2111
2112 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2113 {
2114         struct region_code_mapping {
2115                 const char *cn;
2116                 int code;
2117         };
2118
2119         /* Section 5.17.2 */
2120         static const struct region_code_mapping regmap[] = {
2121                 {"US ", 0x10}, /* US FCC */
2122                 {"CA ", 0x20}, /* Canada */
2123                 {"EU ", 0x30}, /* ETSI   */
2124                 {"ES ", 0x31}, /* Spain  */
2125                 {"FR ", 0x32}, /* France */
2126                 {"JP ", 0x40}, /* Japan  */
2127         };
2128         size_t i;
2129
2130         lbs_deb_enter(LBS_DEB_CFG80211);
2131
2132         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2133                 if (regmap[i].code == priv->regioncode) {
2134                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2135                         break;
2136                 }
2137
2138         lbs_deb_leave(LBS_DEB_CFG80211);
2139 }
2140
2141
2142 /*
2143  * This function get's called after lbs_setup_firmware() determined the
2144  * firmware capabities. So we can setup the wiphy according to our
2145  * hardware/firmware.
2146  */
2147 int lbs_cfg_register(struct lbs_private *priv)
2148 {
2149         struct wireless_dev *wdev = priv->wdev;
2150         int ret;
2151
2152         lbs_deb_enter(LBS_DEB_CFG80211);
2153
2154         wdev->wiphy->max_scan_ssids = 1;
2155         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2156
2157         wdev->wiphy->interface_modes =
2158                         BIT(NL80211_IFTYPE_STATION) |
2159                         BIT(NL80211_IFTYPE_ADHOC);
2160         if (lbs_rtap_supported(priv))
2161                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2162         if (lbs_mesh_activated(priv))
2163                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2164
2165         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2166
2167         /*
2168          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2169          * never seen a firmware without WPA
2170          */
2171         wdev->wiphy->cipher_suites = cipher_suites;
2172         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2173         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2174
2175         ret = wiphy_register(wdev->wiphy);
2176         if (ret < 0)
2177                 pr_err("cannot register wiphy device\n");
2178
2179         priv->wiphy_registered = true;
2180
2181         ret = register_netdev(priv->dev);
2182         if (ret)
2183                 pr_err("cannot register network device\n");
2184
2185         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2186
2187         lbs_cfg_set_regulatory_hint(priv);
2188
2189         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2190         return ret;
2191 }
2192
2193 int lbs_reg_notifier(struct wiphy *wiphy,
2194                 struct regulatory_request *request)
2195 {
2196         struct lbs_private *priv = wiphy_priv(wiphy);
2197         int ret;
2198
2199         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2200                         "callback for domain %c%c\n", request->alpha2[0],
2201                         request->alpha2[1]);
2202
2203         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2204
2205         lbs_deb_leave(LBS_DEB_CFG80211);
2206         return ret;
2207 }
2208
2209 void lbs_scan_deinit(struct lbs_private *priv)
2210 {
2211         lbs_deb_enter(LBS_DEB_CFG80211);
2212         cancel_delayed_work_sync(&priv->scan_work);
2213 }
2214
2215
2216 void lbs_cfg_free(struct lbs_private *priv)
2217 {
2218         struct wireless_dev *wdev = priv->wdev;
2219
2220         lbs_deb_enter(LBS_DEB_CFG80211);
2221
2222         if (!wdev)
2223                 return;
2224
2225         if (priv->wiphy_registered)
2226                 wiphy_unregister(wdev->wiphy);
2227
2228         if (wdev->wiphy)
2229                 wiphy_free(wdev->wiphy);
2230
2231         kfree(wdev);
2232 }