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 int 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         rcu_read_lock();
 302         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 303         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 304
 305         /*
 306          * 01 00                   TLV_TYPE_RATES
 307          * 04 00                   len
 308          * 82 84 8b 96             rates
 309          */
 310         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 311         tlv += sizeof(rate_tlv->header);
 312
 313         /* Add basic rates */
 314         if (rates_eid) {
 315                 tlv = add_ie_rates(tlv, rates_eid, &n);
 316
 317                 /* Add extended rates, if any */
 318                 if (ext_rates_eid)
 319                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 320         } else {
 321                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 322                 /* Fallback: add basic 802.11b rates */
 323                 *tlv++ = 0x82;
 324                 *tlv++ = 0x84;
 325                 *tlv++ = 0x8b;
 326                 *tlv++ = 0x96;
 327                 n = 4;
 328         }
 329         rcu_read_unlock();
 330
 331         rate_tlv->header.len = cpu_to_le16(n);
 332         return sizeof(rate_tlv->header) + n;
 333 }
 334
 335
 336 /*
 337  * Add auth type TLV.
 338  *
 339  * This is only needed for newer firmware (V9 and up).
 340  */
 341 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 342         sizeof(struct mrvl_ie_auth_type)
 343
 344 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 345 {
 346         struct mrvl_ie_auth_type *auth = (void *) tlv;
 347
 348         /*
 349          * 1f 01  TLV_TYPE_AUTH_TYPE
 350          * 01 00  len
 351          * 01     auth type
 352          */
 353         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 354         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 355         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 356         return sizeof(*auth);
 357 }
 358
 359
 360 /*
 361  * Add channel (phy ds) TLV
 362  */
 363 #define LBS_MAX_CHANNEL_TLV_SIZE \
 364         sizeof(struct mrvl_ie_header)
 365
 366 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 367 {
 368         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 369
 370         /*
 371          * 03 00  TLV_TYPE_PHY_DS
 372          * 01 00  len
 373          * 06     channel
 374          */
 375         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 376         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 377         ds->channel = channel;
 378         return sizeof(*ds);
 379 }
 380
 381
 382 /*
 383  * Add (empty) CF param TLV of the form:
 384  */
 385 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 386         sizeof(struct mrvl_ie_header)
 387
 388 static int lbs_add_cf_param_tlv(u8 *tlv)
 389 {
 390         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 391
 392         /*
 393          * 04 00  TLV_TYPE_CF
 394          * 06 00  len
 395          * 00     cfpcnt
 396          * 00     cfpperiod
 397          * 00 00  cfpmaxduration
 398          * 00 00  cfpdurationremaining
 399          */
 400         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 401         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 402         return sizeof(*cf);
 403 }
 404
 405 /*
 406  * Add WPA TLV
 407  */
 408 #define LBS_MAX_WPA_TLV_SIZE                    \
 409         (sizeof(struct mrvl_ie_header)          \
 410          + 128 /* TODO: I guessed the size */)
 411
 412 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 413 {
 414         size_t tlv_len;
 415
 416         /*
 417          * We need just convert an IE to an TLV. IEs use u8 for the header,
 418          *   u8      type
 419          *   u8      len
 420          *   u8[]    data
 421          * but TLVs use __le16 instead:
 422          *   __le16  type
 423          *   __le16  len
 424          *   u8[]    data
 425          */
 426         *tlv++ = *ie++;
 427         *tlv++ = 0;
 428         tlv_len = *tlv++ = *ie++;
 429         *tlv++ = 0;
 430         while (tlv_len--)
 431                 *tlv++ = *ie++;
 432         /* the TLV is two bytes larger than the IE */
 433         return ie_len + 2;
 434 }
 435
 436 /*
 437  * Set Channel
 438  */
 439
 440 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
 441                                        struct cfg80211_chan_def *chandef)
 442 {
 443         struct lbs_private *priv = wiphy_priv(wiphy);
 444         int ret = -ENOTSUPP;
 445
 446         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 447                            chandef->chan->center_freq,
 448                            cfg80211_get_chandef_type(chandef));
 449
 450         if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
 451                 goto out;
 452
 453         ret = lbs_set_channel(priv, chandef->chan->hw_value);
 454
 455  out:
 456         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 457         return ret;
 458 }
 459
 460 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
 461                                     struct net_device *netdev,
 462                                     struct ieee80211_channel *channel)
 463 {
 464         struct lbs_private *priv = wiphy_priv(wiphy);
 465         int ret = -ENOTSUPP;
 466
 467         lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
 468                            netdev_name(netdev), channel->center_freq);
 469
 470         if (netdev != priv->mesh_dev)
 471                 goto out;
 472
 473         ret = lbs_mesh_set_channel(priv, channel->hw_value);
 474
 475  out:
 476         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 477         return ret;
 478 }
 479
 480
 481
 482 /*
 483  * Scanning
 484  */
 485
 486 /*
 487  * When scanning, the firmware doesn't send a nul packet with the power-safe
 488  * bit to the AP. So we cannot stay away from our current channel too long,
 489  * otherwise we loose data. So take a "nap" while scanning every other
 490  * while.
 491  */
 492 #define LBS_SCAN_BEFORE_NAP 4
 493
 494
 495 /*
 496  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 497  * which isn't really an RSSI, as it becomes larger when moving away from
 498  * the AP. Anyway, we need to convert that into mBm.
 499  */
 500 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 501         ((-(int)rssi + 3)*100)
 502
 503 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 504         struct cmd_header *resp)
 505 {
 506         struct cfg80211_bss *bss;
 507         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 508         int bsssize;
 509         const u8 *pos;
 510         const u8 *tsfdesc;
 511         int tsfsize;
 512         int i;
 513         int ret = -EILSEQ;
 514
 515         lbs_deb_enter(LBS_DEB_CFG80211);
 516
 517         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 518
 519         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 520                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 521
 522         if (scanresp->nr_sets == 0) {
 523                 ret = 0;
 524                 goto done;
 525         }
 526
 527         /*
 528          * The general layout of the scan response is described in chapter
 529          * 5.7.1. Basically we have a common part, then any number of BSS
 530          * descriptor sections. Finally we have section with the same number
 531          * of TSFs.
 532          *
 533          * cmd_ds_802_11_scan_rsp
 534          *   cmd_header
 535          *   pos_size
 536          *   nr_sets
 537          *   bssdesc 1
 538          *     bssid
 539          *     rssi
 540          *     timestamp
 541          *     intvl
 542          *     capa
 543          *     IEs
 544          *   bssdesc 2
 545          *   bssdesc n
 546          *   MrvlIEtypes_TsfFimestamp_t
 547          *     TSF for BSS 1
 548          *     TSF for BSS 2
 549          *     TSF for BSS n
 550          */
 551
 552         pos = scanresp->bssdesc_and_tlvbuffer;
 553
 554         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 555                         scanresp->bssdescriptsize);
 556
 557         tsfdesc = pos + bsssize;
 558         tsfsize = 4 + 8 * scanresp->nr_sets;
 559         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 560
 561         /* Validity check: we expect a Marvell-Local TLV */
 562         i = get_unaligned_le16(tsfdesc);
 563         tsfdesc += 2;
 564         if (i != TLV_TYPE_TSFTIMESTAMP) {
 565                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 566                 goto done;
 567         }
 568
 569         /*
 570          * Validity check: the TLV holds TSF values with 8 bytes each, so
 571          * the size in the TLV must match the nr_sets value
 572          */
 573         i = get_unaligned_le16(tsfdesc);
 574         tsfdesc += 2;
 575         if (i / 8 != scanresp->nr_sets) {
 576                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 577                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 578                              i / 8);
 579                 goto done;
 580         }
 581
 582         for (i = 0; i < scanresp->nr_sets; i++) {
 583                 const u8 *bssid;
 584                 const u8 *ie;
 585                 int left;
 586                 int ielen;
 587                 int rssi;
 588                 u16 intvl;
 589                 u16 capa;
 590                 int chan_no = -1;
 591                 const u8 *ssid = NULL;
 592                 u8 ssid_len = 0;
 593
 594                 int len = get_unaligned_le16(pos);
 595                 pos += 2;
 596
 597                 /* BSSID */
 598                 bssid = pos;
 599                 pos += ETH_ALEN;
 600                 /* RSSI */
 601                 rssi = *pos++;
 602                 /* Packet time stamp */
 603                 pos += 8;
 604                 /* Beacon interval */
 605                 intvl = get_unaligned_le16(pos);
 606                 pos += 2;
 607                 /* Capabilities */
 608                 capa = get_unaligned_le16(pos);
 609                 pos += 2;
 610
 611                 /* To find out the channel, we must parse the IEs */
 612                 ie = pos;
 613                 /*
 614                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 615                  * interval, capabilities
 616                  */
 617                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 618                 while (left >= 2) {
 619                         u8 id, elen;
 620                         id = *pos++;
 621                         elen = *pos++;
 622                         left -= 2;
 623                         if (elen > left) {
 624                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 625                                 goto done;
 626                         }
 627
 628                         if (id == WLAN_EID_DS_PARAMS)
 629                                 chan_no = *pos;
 630                         if (id == WLAN_EID_SSID) {
 631                                 ssid = pos;
 632                                 ssid_len = elen;
 633                         }
 634                         left -= elen;
 635                         pos += elen;
 636                 }
 637
 638                 /* No channel, no luck */
 639                 if (chan_no != -1) {
 640                         struct wiphy *wiphy = priv->wdev->wiphy;
 641                         int freq = ieee80211_channel_to_frequency(chan_no,
 642                                                         IEEE80211_BAND_2GHZ);
 643                         struct ieee80211_channel *channel =
 644                                 ieee80211_get_channel(wiphy, freq);
 645
 646                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
 647                                      bssid, capa, chan_no, ssid_len, ssid,
 648                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 649
 650                         if (channel &&
 651                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 652                                 bss = cfg80211_inform_bss(wiphy, channel,
 653                                         CFG80211_BSS_FTYPE_UNKNOWN,
 654                                         bssid, get_unaligned_le64(tsfdesc),
 655                                         capa, intvl, ie, ielen,
 656                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 657                                         GFP_KERNEL);
 658                                 cfg80211_put_bss(wiphy, bss);
 659                         }
 660                 } else
 661                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 662
 663                 tsfdesc += 8;
 664         }
 665         ret = 0;
 666
 667  done:
 668         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 669         return ret;
 670 }
 671
 672
 673 /*
 674  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 675  * TLV and a rates TLV. Determine the maximum size of them:
 676  */
 677 #define LBS_SCAN_MAX_CMD_SIZE                   \
 678         (sizeof(struct cmd_ds_802_11_scan)      \
 679          + LBS_MAX_SSID_TLV_SIZE                \
 680          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 681          + LBS_MAX_RATES_TLV_SIZE)
 682
 683 /*
 684  * Assumes priv->scan_req is initialized and valid
 685  * Assumes priv->scan_channel is initialized
 686  */
 687 static void lbs_scan_worker(struct work_struct *work)
 688 {
 689         struct lbs_private *priv =
 690                 container_of(work, struct lbs_private, scan_work.work);
 691         struct cmd_ds_802_11_scan *scan_cmd;
 692         u8 *tlv; /* pointer into our current, growing TLV storage area */
 693         int last_channel;
 694         int running, carrier;
 695
 696         lbs_deb_enter(LBS_DEB_SCAN);
 697
 698         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 699         if (scan_cmd == NULL)
 700                 goto out_no_scan_cmd;
 701
 702         /* prepare fixed part of scan command */
 703         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 704
 705         /* stop network while we're away from our main channel */
 706         running = !netif_queue_stopped(priv->dev);
 707         carrier = netif_carrier_ok(priv->dev);
 708         if (running)
 709                 netif_stop_queue(priv->dev);
 710         if (carrier)
 711                 netif_carrier_off(priv->dev);
 712
 713         /* prepare fixed part of scan command */
 714         tlv = scan_cmd->tlvbuffer;
 715
 716         /* add SSID TLV */
 717         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 718                 tlv += lbs_add_ssid_tlv(tlv,
 719                                         priv->scan_req->ssids[0].ssid,
 720                                         priv->scan_req->ssids[0].ssid_len);
 721
 722         /* add channel TLVs */
 723         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 724         if (last_channel > priv->scan_req->n_channels)
 725                 last_channel = priv->scan_req->n_channels;
 726         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 727                 priv->scan_req->n_ssids);
 728
 729         /* add rates TLV */
 730         tlv += lbs_add_supported_rates_tlv(tlv);
 731
 732         if (priv->scan_channel < priv->scan_req->n_channels) {
 733                 cancel_delayed_work(&priv->scan_work);
 734                 if (netif_running(priv->dev))
 735                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 736                                 msecs_to_jiffies(300));
 737         }
 738
 739         /* This is the final data we are about to send */
 740         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 741         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 742                     sizeof(*scan_cmd));
 743         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 744                     tlv - scan_cmd->tlvbuffer);
 745
 746         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 747                 le16_to_cpu(scan_cmd->hdr.size),
 748                 lbs_ret_scan, 0);
 749
 750         if (priv->scan_channel >= priv->scan_req->n_channels) {
 751                 /* Mark scan done */
 752                 cancel_delayed_work(&priv->scan_work);
 753                 lbs_scan_done(priv);
 754         }
 755
 756         /* Restart network */
 757         if (carrier)
 758                 netif_carrier_on(priv->dev);
 759         if (running && !priv->tx_pending_len)
 760                 netif_wake_queue(priv->dev);
 761
 762         kfree(scan_cmd);
 763
 764         /* Wake up anything waiting on scan completion */
 765         if (priv->scan_req == NULL) {
 766                 lbs_deb_scan("scan: waking up waiters\n");
 767                 wake_up_all(&priv->scan_q);
 768         }
 769
 770  out_no_scan_cmd:
 771         lbs_deb_leave(LBS_DEB_SCAN);
 772 }
 773
 774 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 775         struct cfg80211_scan_request *request)
 776 {
 777         lbs_deb_enter(LBS_DEB_CFG80211);
 778
 779         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 780                 request->n_ssids, request->n_channels, request->ie_len);
 781
 782         priv->scan_channel = 0;
 783         priv->scan_req = request;
 784         priv->internal_scan = internal;
 785
 786         queue_delayed_work(priv->work_thread, &priv->scan_work,
 787                 msecs_to_jiffies(50));
 788
 789         lbs_deb_leave(LBS_DEB_CFG80211);
 790 }
 791
 792 /*
 793  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 794  */
 795 void lbs_scan_done(struct lbs_private *priv)
 796 {
 797         WARN_ON(!priv->scan_req);
 798
 799         if (priv->internal_scan)
 800                 kfree(priv->scan_req);
 801         else
 802                 cfg80211_scan_done(priv->scan_req, false);
 803
 804         priv->scan_req = NULL;
 805 }
 806
 807 static int lbs_cfg_scan(struct wiphy *wiphy,
 808         struct cfg80211_scan_request *request)
 809 {
 810         struct lbs_private *priv = wiphy_priv(wiphy);
 811         int ret = 0;
 812
 813         lbs_deb_enter(LBS_DEB_CFG80211);
 814
 815         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 816                 /* old scan request not yet processed */
 817                 ret = -EAGAIN;
 818                 goto out;
 819         }
 820
 821         _internal_start_scan(priv, false, request);
 822
 823         if (priv->surpriseremoved)
 824                 ret = -EIO;
 825
 826  out:
 827         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 828         return ret;
 829 }
 830
 831
 832
 833
 834 /*
 835  * Events
 836  */
 837
 838 void lbs_send_disconnect_notification(struct lbs_private *priv)
 839 {
 840         lbs_deb_enter(LBS_DEB_CFG80211);
 841
 842         cfg80211_disconnected(priv->dev,
 843                 0,
 844                 NULL, 0,
 845                 GFP_KERNEL);
 846
 847         lbs_deb_leave(LBS_DEB_CFG80211);
 848 }
 849
 850 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 851 {
 852         lbs_deb_enter(LBS_DEB_CFG80211);
 853
 854         cfg80211_michael_mic_failure(priv->dev,
 855                 priv->assoc_bss,
 856                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 857                         NL80211_KEYTYPE_GROUP :
 858                         NL80211_KEYTYPE_PAIRWISE,
 859                 -1,
 860                 NULL,
 861                 GFP_KERNEL);
 862
 863         lbs_deb_leave(LBS_DEB_CFG80211);
 864 }
 865
 866
 867
 868
 869 /*
 870  * Connect/disconnect
 871  */
 872
 873
 874 /*
 875  * This removes all WEP keys
 876  */
 877 static int lbs_remove_wep_keys(struct lbs_private *priv)
 878 {
 879         struct cmd_ds_802_11_set_wep cmd;
 880         int ret;
 881
 882         lbs_deb_enter(LBS_DEB_CFG80211);
 883
 884         memset(&cmd, 0, sizeof(cmd));
 885         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 886         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 887         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 888
 889         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 890
 891         lbs_deb_leave(LBS_DEB_CFG80211);
 892         return ret;
 893 }
 894
 895 /*
 896  * Set WEP keys
 897  */
 898 static int lbs_set_wep_keys(struct lbs_private *priv)
 899 {
 900         struct cmd_ds_802_11_set_wep cmd;
 901         int i;
 902         int ret;
 903
 904         lbs_deb_enter(LBS_DEB_CFG80211);
 905
 906         /*
 907          * command         13 00
 908          * size            50 00
 909          * sequence        xx xx
 910          * result          00 00
 911          * action          02 00     ACT_ADD
 912          * transmit key    00 00
 913          * type for key 1  01        WEP40
 914          * type for key 2  00
 915          * type for key 3  00
 916          * type for key 4  00
 917          * key 1           39 39 39 39 39 00 00 00
 918          *                 00 00 00 00 00 00 00 00
 919          * key 2           00 00 00 00 00 00 00 00
 920          *                 00 00 00 00 00 00 00 00
 921          * key 3           00 00 00 00 00 00 00 00
 922          *                 00 00 00 00 00 00 00 00
 923          * key 4           00 00 00 00 00 00 00 00
 924          */
 925         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 926             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 927                 /* Only set wep keys if we have at least one of them */
 928                 memset(&cmd, 0, sizeof(cmd));
 929                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 930                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 931                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 932
 933                 for (i = 0; i < 4; i++) {
 934                         switch (priv->wep_key_len[i]) {
 935                         case WLAN_KEY_LEN_WEP40:
 936                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 937                                 break;
 938                         case WLAN_KEY_LEN_WEP104:
 939                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 940                                 break;
 941                         default:
 942                                 cmd.keytype[i] = 0;
 943                                 break;
 944                         }
 945                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 946                                priv->wep_key_len[i]);
 947                 }
 948
 949                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 950         } else {
 951                 /* Otherwise remove all wep keys */
 952                 ret = lbs_remove_wep_keys(priv);
 953         }
 954
 955         lbs_deb_leave(LBS_DEB_CFG80211);
 956         return ret;
 957 }
 958
 959
 960 /*
 961  * Enable/Disable RSN status
 962  */
 963 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 964 {
 965         struct cmd_ds_802_11_enable_rsn cmd;
 966         int ret;
 967
 968         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 969
 970         /*
 971          * cmd       2f 00
 972          * size      0c 00
 973          * sequence  xx xx
 974          * result    00 00
 975          * action    01 00    ACT_SET
 976          * enable    01 00
 977          */
 978         memset(&cmd, 0, sizeof(cmd));
 979         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 980         cmd.action = cpu_to_le16(CMD_ACT_SET);
 981         cmd.enable = cpu_to_le16(enable);
 982
 983         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 984
 985         lbs_deb_leave(LBS_DEB_CFG80211);
 986         return ret;
 987 }
 988
 989
 990 /*
 991  * Set WPA/WPA key material
 992  */
 993
 994 /*
 995  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 996  * get rid of WEXT, this should go into host.h
 997  */
 998
 999 struct cmd_key_material {
1000         struct cmd_header hdr;
1001
1002         __le16 action;
1003         struct MrvlIEtype_keyParamSet param;
1004 } __packed;
1005
1006 static int lbs_set_key_material(struct lbs_private *priv,
1007                                 int key_type, int key_info,
1008                                 const u8 *key, u16 key_len)
1009 {
1010         struct cmd_key_material cmd;
1011         int ret;
1012
1013         lbs_deb_enter(LBS_DEB_CFG80211);
1014
1015         /*
1016          * Example for WPA (TKIP):
1017          *
1018          * cmd       5e 00
1019          * size      34 00
1020          * sequence  xx xx
1021          * result    00 00
1022          * action    01 00
1023          * TLV type  00 01    key param
1024          * length    00 26
1025          * key type  01 00    TKIP
1026          * key info  06 00    UNICAST | ENABLED
1027          * key len   20 00
1028          * key       32 bytes
1029          */
1030         memset(&cmd, 0, sizeof(cmd));
1031         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1032         cmd.action = cpu_to_le16(CMD_ACT_SET);
1033         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1034         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1035         cmd.param.keytypeid = cpu_to_le16(key_type);
1036         cmd.param.keyinfo = cpu_to_le16(key_info);
1037         cmd.param.keylen = cpu_to_le16(key_len);
1038         if (key && key_len)
1039                 memcpy(cmd.param.key, key, key_len);
1040
1041         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1042
1043         lbs_deb_leave(LBS_DEB_CFG80211);
1044         return ret;
1045 }
1046
1047
1048 /*
1049  * Sets the auth type (open, shared, etc) in the firmware. That
1050  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1051  * command doesn't send an authentication frame at all, it just
1052  * stores the auth_type.
1053  */
1054 static int lbs_set_authtype(struct lbs_private *priv,
1055                             struct cfg80211_connect_params *sme)
1056 {
1057         struct cmd_ds_802_11_authenticate cmd;
1058         int ret;
1059
1060         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1061
1062         /*
1063          * cmd        11 00
1064          * size       19 00
1065          * sequence   xx xx
1066          * result     00 00
1067          * BSS id     00 13 19 80 da 30
1068          * auth type  00
1069          * reserved   00 00 00 00 00 00 00 00 00 00
1070          */
1071         memset(&cmd, 0, sizeof(cmd));
1072         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1073         if (sme->bssid)
1074                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1075         /* convert auth_type */
1076         ret = lbs_auth_to_authtype(sme->auth_type);
1077         if (ret < 0)
1078                 goto done;
1079
1080         cmd.authtype = ret;
1081         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1082
1083  done:
1084         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1085         return ret;
1086 }
1087
1088
1089 /*
1090  * Create association request
1091  */
1092 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1093         (sizeof(struct cmd_ds_802_11_associate)    \
1094          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1095          + LBS_MAX_SSID_TLV_SIZE                   \
1096          + LBS_MAX_CHANNEL_TLV_SIZE                \
1097          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1098          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1099          + LBS_MAX_WPA_TLV_SIZE)
1100
1101 static int lbs_associate(struct lbs_private *priv,
1102                 struct cfg80211_bss *bss,
1103                 struct cfg80211_connect_params *sme)
1104 {
1105         struct cmd_ds_802_11_associate_response *resp;
1106         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1107                                                       GFP_KERNEL);
1108         const u8 *ssid_eid;
1109         size_t len, resp_ie_len;
1110         int status;
1111         int ret;
1112         u8 *pos = &(cmd->iebuf[0]);
1113         u8 *tmp;
1114
1115         lbs_deb_enter(LBS_DEB_CFG80211);
1116
1117         if (!cmd) {
1118                 ret = -ENOMEM;
1119                 goto done;
1120         }
1121
1122         /*
1123          * cmd              50 00
1124          * length           34 00
1125          * sequence         xx xx
1126          * result           00 00
1127          * BSS id           00 13 19 80 da 30
1128          * capabilities     11 00
1129          * listen interval  0a 00
1130          * beacon interval  00 00
1131          * DTIM period      00
1132          * TLVs             xx   (up to 512 bytes)
1133          */
1134         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1135
1136         /* Fill in static fields */
1137         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1138         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1139         cmd->capability = cpu_to_le16(bss->capability);
1140
1141         /* add SSID TLV */
1142         rcu_read_lock();
1143         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1144         if (ssid_eid)
1145                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1146         else
1147                 lbs_deb_assoc("no SSID\n");
1148         rcu_read_unlock();
1149
1150         /* add DS param TLV */
1151         if (bss->channel)
1152                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1153         else
1154                 lbs_deb_assoc("no channel\n");
1155
1156         /* add (empty) CF param TLV */
1157         pos += lbs_add_cf_param_tlv(pos);
1158
1159         /* add rates TLV */
1160         tmp = pos + 4; /* skip Marvell IE header */
1161         pos += lbs_add_common_rates_tlv(pos, bss);
1162         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1163
1164         /* add auth type TLV */
1165         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1166                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1167
1168         /* add WPA/WPA2 TLV */
1169         if (sme->ie && sme->ie_len)
1170                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1171
1172         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1173                 (u16)(pos - (u8 *) &cmd->iebuf);
1174         cmd->hdr.size = cpu_to_le16(len);
1175
1176         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1177                         le16_to_cpu(cmd->hdr.size));
1178
1179         /* store for later use */
1180         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1181
1182         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1183         if (ret)
1184                 goto done;
1185
1186         /* generate connect message to cfg80211 */
1187
1188         resp = (void *) cmd; /* recast for easier field access */
1189         status = le16_to_cpu(resp->statuscode);
1190
1191         /* Older FW versions map the IEEE 802.11 Status Code in the association
1192          * response to the following values returned in resp->statuscode:
1193          *
1194          *    IEEE Status Code                Marvell Status Code
1195          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1196          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1197          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1198          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1199          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1200          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1201          *
1202          * Other response codes:
1203          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1204          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1205          *                                    association response from the AP)
1206          */
1207         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1208                 switch (status) {
1209                 case 0:
1210                         break;
1211                 case 1:
1212                         lbs_deb_assoc("invalid association parameters\n");
1213                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1214                         break;
1215                 case 2:
1216                         lbs_deb_assoc("timer expired while waiting for AP\n");
1217                         status = WLAN_STATUS_AUTH_TIMEOUT;
1218                         break;
1219                 case 3:
1220                         lbs_deb_assoc("association refused by AP\n");
1221                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1222                         break;
1223                 case 4:
1224                         lbs_deb_assoc("authentication refused by AP\n");
1225                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1226                         break;
1227                 default:
1228                         lbs_deb_assoc("association failure %d\n", status);
1229                         /* v5 OLPC firmware does return the AP status code if
1230                          * it's not one of the values above.  Let that through.
1231                          */
1232                         break;
1233                 }
1234         }
1235
1236         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1237                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1238                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1239
1240         resp_ie_len = le16_to_cpu(resp->hdr.size)
1241                 - sizeof(resp->hdr)
1242                 - 6;
1243         cfg80211_connect_result(priv->dev,
1244                                 priv->assoc_bss,
1245                                 sme->ie, sme->ie_len,
1246                                 resp->iebuf, resp_ie_len,
1247                                 status,
1248                                 GFP_KERNEL);
1249
1250         if (status == 0) {
1251                 /* TODO: get rid of priv->connect_status */
1252                 priv->connect_status = LBS_CONNECTED;
1253                 netif_carrier_on(priv->dev);
1254                 if (!priv->tx_pending_len)
1255                         netif_tx_wake_all_queues(priv->dev);
1256         }
1257
1258         kfree(cmd);
1259 done:
1260         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1261         return ret;
1262 }
1263
1264 static struct cfg80211_scan_request *
1265 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1266 {
1267         struct cfg80211_scan_request *creq = NULL;
1268         int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1269         enum ieee80211_band band;
1270
1271         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1272                        n_channels * sizeof(void *),
1273                        GFP_ATOMIC);
1274         if (!creq)
1275                 return NULL;
1276
1277         /* SSIDs come after channels */
1278         creq->ssids = (void *)&creq->channels[n_channels];
1279         creq->n_channels = n_channels;
1280         creq->n_ssids = 1;
1281
1282         /* Scan all available channels */
1283         i = 0;
1284         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1285                 int j;
1286
1287                 if (!wiphy->bands[band])
1288                         continue;
1289
1290                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1291                         /* ignore disabled channels */
1292                         if (wiphy->bands[band]->channels[j].flags &
1293                                                 IEEE80211_CHAN_DISABLED)
1294                                 continue;
1295
1296                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1297                         i++;
1298                 }
1299         }
1300         if (i) {
1301                 /* Set real number of channels specified in creq->channels[] */
1302                 creq->n_channels = i;
1303
1304                 /* Scan for the SSID we're going to connect to */
1305                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1306                 creq->ssids[0].ssid_len = sme->ssid_len;
1307         } else {
1308                 /* No channels found... */
1309                 kfree(creq);
1310                 creq = NULL;
1311         }
1312
1313         return creq;
1314 }
1315
1316 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1317                            struct cfg80211_connect_params *sme)
1318 {
1319         struct lbs_private *priv = wiphy_priv(wiphy);
1320         struct cfg80211_bss *bss = NULL;
1321         int ret = 0;
1322         u8 preamble = RADIO_PREAMBLE_SHORT;
1323
1324         if (dev == priv->mesh_dev)
1325                 return -EOPNOTSUPP;
1326
1327         lbs_deb_enter(LBS_DEB_CFG80211);
1328
1329         if (!sme->bssid) {
1330                 struct cfg80211_scan_request *creq;
1331
1332                 /*
1333                  * Scan for the requested network after waiting for existing
1334                  * scans to finish.
1335                  */
1336                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1337                 wait_event_interruptible_timeout(priv->scan_q,
1338                                                  (priv->scan_req == NULL),
1339                                                  (15 * HZ));
1340
1341                 creq = _new_connect_scan_req(wiphy, sme);
1342                 if (!creq) {
1343                         ret = -EINVAL;
1344                         goto done;
1345                 }
1346
1347                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1348                 _internal_start_scan(priv, true, creq);
1349
1350                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1351                 wait_event_interruptible_timeout(priv->scan_q,
1352                                                  (priv->scan_req == NULL),
1353                                                  (15 * HZ));
1354                 lbs_deb_assoc("assoc: scanning completed\n");
1355         }
1356
1357         /* Find the BSS we want using available scan results */
1358         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1359                 sme->ssid, sme->ssid_len,
1360                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1361         if (!bss) {
1362                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1363                           sme->bssid);
1364                 ret = -ENOENT;
1365                 goto done;
1366         }
1367         lbs_deb_assoc("trying %pM\n", bss->bssid);
1368         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1369                       sme->crypto.cipher_group,
1370                       sme->key_idx, sme->key_len);
1371
1372         /* As this is a new connection, clear locally stored WEP keys */
1373         priv->wep_tx_key = 0;
1374         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1375         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1376
1377         /* set/remove WEP keys */
1378         switch (sme->crypto.cipher_group) {
1379         case WLAN_CIPHER_SUITE_WEP40:
1380         case WLAN_CIPHER_SUITE_WEP104:
1381                 /* Store provided WEP keys in priv-> */
1382                 priv->wep_tx_key = sme->key_idx;
1383                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1384                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1385                 /* Set WEP keys and WEP mode */
1386                 lbs_set_wep_keys(priv);
1387                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1388                 lbs_set_mac_control(priv);
1389                 /* No RSN mode for WEP */
1390                 lbs_enable_rsn(priv, 0);
1391                 break;
1392         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1393                 /*
1394                  * If we don't have no WEP, no WPA and no WPA2,
1395                  * we remove all keys like in the WPA/WPA2 setup,
1396                  * we just don't set RSN.
1397                  *
1398                  * Therefore: fall-through
1399                  */
1400         case WLAN_CIPHER_SUITE_TKIP:
1401         case WLAN_CIPHER_SUITE_CCMP:
1402                 /* Remove WEP keys and WEP mode */
1403                 lbs_remove_wep_keys(priv);
1404                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1405                 lbs_set_mac_control(priv);
1406
1407                 /* clear the WPA/WPA2 keys */
1408                 lbs_set_key_material(priv,
1409                         KEY_TYPE_ID_WEP, /* doesn't matter */
1410                         KEY_INFO_WPA_UNICAST,
1411                         NULL, 0);
1412                 lbs_set_key_material(priv,
1413                         KEY_TYPE_ID_WEP, /* doesn't matter */
1414                         KEY_INFO_WPA_MCAST,
1415                         NULL, 0);
1416                 /* RSN mode for WPA/WPA2 */
1417                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1418                 break;
1419         default:
1420                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1421                           sme->crypto.cipher_group);
1422                 ret = -ENOTSUPP;
1423                 goto done;
1424         }
1425
1426         ret = lbs_set_authtype(priv, sme);
1427         if (ret == -ENOTSUPP) {
1428                 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1429                 goto done;
1430         }
1431
1432         lbs_set_radio(priv, preamble, 1);
1433
1434         /* Do the actual association */
1435         ret = lbs_associate(priv, bss, sme);
1436
1437  done:
1438         if (bss)
1439                 cfg80211_put_bss(wiphy, bss);
1440         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1441         return ret;
1442 }
1443
1444 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1445 {
1446         struct cmd_ds_802_11_deauthenticate cmd;
1447         int ret;
1448
1449         memset(&cmd, 0, sizeof(cmd));
1450         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1451         /* Mildly ugly to use a locally store my own BSSID ... */
1452         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1453         cmd.reasoncode = cpu_to_le16(reason);
1454
1455         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1456         if (ret)
1457                 return ret;
1458
1459         cfg80211_disconnected(priv->dev,
1460                         reason,
1461                         NULL, 0,
1462                         GFP_KERNEL);
1463         priv->connect_status = LBS_DISCONNECTED;
1464
1465         return 0;
1466 }
1467
1468 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1469         u16 reason_code)
1470 {
1471         struct lbs_private *priv = wiphy_priv(wiphy);
1472
1473         if (dev == priv->mesh_dev)
1474                 return -EOPNOTSUPP;
1475
1476         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1477
1478         /* store for lbs_cfg_ret_disconnect() */
1479         priv->disassoc_reason = reason_code;
1480
1481         return lbs_disconnect(priv, reason_code);
1482 }
1483
1484 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1485                                    struct net_device *netdev,
1486                                    u8 key_index, bool unicast,
1487                                    bool multicast)
1488 {
1489         struct lbs_private *priv = wiphy_priv(wiphy);
1490
1491         if (netdev == priv->mesh_dev)
1492                 return -EOPNOTSUPP;
1493
1494         lbs_deb_enter(LBS_DEB_CFG80211);
1495
1496         if (key_index != priv->wep_tx_key) {
1497                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1498                 priv->wep_tx_key = key_index;
1499                 lbs_set_wep_keys(priv);
1500         }
1501
1502         return 0;
1503 }
1504
1505
1506 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1507                            u8 idx, bool pairwise, const u8 *mac_addr,
1508                            struct key_params *params)
1509 {
1510         struct lbs_private *priv = wiphy_priv(wiphy);
1511         u16 key_info;
1512         u16 key_type;
1513         int ret = 0;
1514
1515         if (netdev == priv->mesh_dev)
1516                 return -EOPNOTSUPP;
1517
1518         lbs_deb_enter(LBS_DEB_CFG80211);
1519
1520         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1521                       params->cipher, mac_addr);
1522         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1523                       idx, params->key_len);
1524         if (params->key_len)
1525                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1526                             params->key, params->key_len);
1527
1528         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1529         if (params->seq_len)
1530                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1531                             params->seq, params->seq_len);
1532
1533         switch (params->cipher) {
1534         case WLAN_CIPHER_SUITE_WEP40:
1535         case WLAN_CIPHER_SUITE_WEP104:
1536                 /* actually compare if something has changed ... */
1537                 if ((priv->wep_key_len[idx] != params->key_len) ||
1538                         memcmp(priv->wep_key[idx],
1539                                params->key, params->key_len) != 0) {
1540                         priv->wep_key_len[idx] = params->key_len;
1541                         memcpy(priv->wep_key[idx],
1542                                params->key, params->key_len);
1543                         lbs_set_wep_keys(priv);
1544                 }
1545                 break;
1546         case WLAN_CIPHER_SUITE_TKIP:
1547         case WLAN_CIPHER_SUITE_CCMP:
1548                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1549                                                    ? KEY_INFO_WPA_UNICAST
1550                                                    : KEY_INFO_WPA_MCAST);
1551                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1552                         ? KEY_TYPE_ID_TKIP
1553                         : KEY_TYPE_ID_AES;
1554                 lbs_set_key_material(priv,
1555                                      key_type,
1556                                      key_info,
1557                                      params->key, params->key_len);
1558                 break;
1559         default:
1560                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1561                 ret = -ENOTSUPP;
1562                 break;
1563         }
1564
1565         return ret;
1566 }
1567
1568
1569 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1570                            u8 key_index, bool pairwise, const u8 *mac_addr)
1571 {
1572
1573         lbs_deb_enter(LBS_DEB_CFG80211);
1574
1575         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1576                       key_index, mac_addr);
1577
1578 #ifdef TODO
1579         struct lbs_private *priv = wiphy_priv(wiphy);
1580         /*
1581          * I think can keep this a NO-OP, because:
1582
1583          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1584          * - neither "iw" nor "wpa_supplicant" won't call this during
1585          *   an ongoing connection
1586          * - TODO: but I have to check if this is still true when
1587          *   I set the AP to periodic re-keying
1588          * - we've not kzallec() something when we've added a key at
1589          *   lbs_cfg_connect() or lbs_cfg_add_key().
1590          *
1591          * This causes lbs_cfg_del_key() only called at disconnect time,
1592          * where we'd just waste time deleting a key that is not going
1593          * to be used anyway.
1594          */
1595         if (key_index < 3 && priv->wep_key_len[key_index]) {
1596                 priv->wep_key_len[key_index] = 0;
1597                 lbs_set_wep_keys(priv);
1598         }
1599 #endif
1600
1601         return 0;
1602 }
1603
1604
1605 /*
1606  * Get station
1607  */
1608
1609 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1610                                const u8 *mac, struct station_info *sinfo)
1611 {
1612         struct lbs_private *priv = wiphy_priv(wiphy);
1613         s8 signal, noise;
1614         int ret;
1615         size_t i;
1616
1617         lbs_deb_enter(LBS_DEB_CFG80211);
1618
1619         sinfo->filled |= STATION_INFO_TX_BYTES |
1620                          STATION_INFO_TX_PACKETS |
1621                          STATION_INFO_RX_BYTES |
1622                          STATION_INFO_RX_PACKETS;
1623         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1624         sinfo->tx_packets = priv->dev->stats.tx_packets;
1625         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1626         sinfo->rx_packets = priv->dev->stats.rx_packets;
1627
1628         /* Get current RSSI */
1629         ret = lbs_get_rssi(priv, &signal, &noise);
1630         if (ret == 0) {
1631                 sinfo->signal = signal;
1632                 sinfo->filled |= STATION_INFO_SIGNAL;
1633         }
1634
1635         /* Convert priv->cur_rate from hw_value to NL80211 value */
1636         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1637                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1638                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1639                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1640                         break;
1641                 }
1642         }
1643
1644         return 0;
1645 }
1646
1647
1648
1649
1650 /*
1651  * Change interface
1652  */
1653
1654 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1655         enum nl80211_iftype type, u32 *flags,
1656                struct vif_params *params)
1657 {
1658         struct lbs_private *priv = wiphy_priv(wiphy);
1659         int ret = 0;
1660
1661         if (dev == priv->mesh_dev)
1662                 return -EOPNOTSUPP;
1663
1664         switch (type) {
1665         case NL80211_IFTYPE_MONITOR:
1666         case NL80211_IFTYPE_STATION:
1667         case NL80211_IFTYPE_ADHOC:
1668                 break;
1669         default:
1670                 return -EOPNOTSUPP;
1671         }
1672
1673         lbs_deb_enter(LBS_DEB_CFG80211);
1674
1675         if (priv->iface_running)
1676                 ret = lbs_set_iface_type(priv, type);
1677
1678         if (!ret)
1679                 priv->wdev->iftype = type;
1680
1681         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1682         return ret;
1683 }
1684
1685
1686
1687 /*
1688  * IBSS (Ad-Hoc)
1689  */
1690
1691 /*
1692  * The firmware needs the following bits masked out of the beacon-derived
1693  * capability field when associating/joining to a BSS:
1694  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1695  */
1696 #define CAPINFO_MASK (~(0xda00))
1697
1698
1699 static void lbs_join_post(struct lbs_private *priv,
1700                           struct cfg80211_ibss_params *params,
1701                           u8 *bssid, u16 capability)
1702 {
1703         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1704                    2 + 4 +                      /* basic rates */
1705                    2 + 1 +                      /* DS parameter */
1706                    2 + 2 +                      /* atim */
1707                    2 + 8];                      /* extended rates */
1708         u8 *fake = fake_ie;
1709         struct cfg80211_bss *bss;
1710
1711         lbs_deb_enter(LBS_DEB_CFG80211);
1712
1713         /*
1714          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1715          * the real IE from the firmware. So we fabricate a fake IE based on
1716          * what the firmware actually sends (sniffed with wireshark).
1717          */
1718         /* Fake SSID IE */
1719         *fake++ = WLAN_EID_SSID;
1720         *fake++ = params->ssid_len;
1721         memcpy(fake, params->ssid, params->ssid_len);
1722         fake += params->ssid_len;
1723         /* Fake supported basic rates IE */
1724         *fake++ = WLAN_EID_SUPP_RATES;
1725         *fake++ = 4;
1726         *fake++ = 0x82;
1727         *fake++ = 0x84;
1728         *fake++ = 0x8b;
1729         *fake++ = 0x96;
1730         /* Fake DS channel IE */
1731         *fake++ = WLAN_EID_DS_PARAMS;
1732         *fake++ = 1;
1733         *fake++ = params->chandef.chan->hw_value;
1734         /* Fake IBSS params IE */
1735         *fake++ = WLAN_EID_IBSS_PARAMS;
1736         *fake++ = 2;
1737         *fake++ = 0; /* ATIM=0 */
1738         *fake++ = 0;
1739         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1740          * but I don't know how this could be checked */
1741         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1742         *fake++ = 8;
1743         *fake++ = 0x0c;
1744         *fake++ = 0x12;
1745         *fake++ = 0x18;
1746         *fake++ = 0x24;
1747         *fake++ = 0x30;
1748         *fake++ = 0x48;
1749         *fake++ = 0x60;
1750         *fake++ = 0x6c;
1751         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1752
1753         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1754                                   params->chandef.chan,
1755                                   CFG80211_BSS_FTYPE_UNKNOWN,
1756                                   bssid,
1757                                   0,
1758                                   capability,
1759                                   params->beacon_interval,
1760                                   fake_ie, fake - fake_ie,
1761                                   0, GFP_KERNEL);
1762         cfg80211_put_bss(priv->wdev->wiphy, bss);
1763
1764         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1765         priv->wdev->ssid_len = params->ssid_len;
1766
1767         cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1768                              GFP_KERNEL);
1769
1770         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1771         priv->connect_status = LBS_CONNECTED;
1772         netif_carrier_on(priv->dev);
1773         if (!priv->tx_pending_len)
1774                 netif_wake_queue(priv->dev);
1775
1776         lbs_deb_leave(LBS_DEB_CFG80211);
1777 }
1778
1779 static int lbs_ibss_join_existing(struct lbs_private *priv,
1780         struct cfg80211_ibss_params *params,
1781         struct cfg80211_bss *bss)
1782 {
1783         const u8 *rates_eid;
1784         struct cmd_ds_802_11_ad_hoc_join cmd;
1785         u8 preamble = RADIO_PREAMBLE_SHORT;
1786         int ret = 0;
1787
1788         lbs_deb_enter(LBS_DEB_CFG80211);
1789
1790         /* TODO: set preamble based on scan result */
1791         ret = lbs_set_radio(priv, preamble, 1);
1792         if (ret)
1793                 goto out;
1794
1795         /*
1796          * Example CMD_802_11_AD_HOC_JOIN command:
1797          *
1798          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1799          * size            65 00
1800          * sequence        xx xx
1801          * result          00 00
1802          * bssid           02 27 27 97 2f 96
1803          * ssid            49 42 53 53 00 00 00 00
1804          *                 00 00 00 00 00 00 00 00
1805          *                 00 00 00 00 00 00 00 00
1806          *                 00 00 00 00 00 00 00 00
1807          * type            02            CMD_BSS_TYPE_IBSS
1808          * beacon period   64 00
1809          * dtim period     00
1810          * timestamp       00 00 00 00 00 00 00 00
1811          * localtime       00 00 00 00 00 00 00 00
1812          * IE DS           03
1813          * IE DS len       01
1814          * IE DS channel   01
1815          * reserveed       00 00 00 00
1816          * IE IBSS         06
1817          * IE IBSS len     02
1818          * IE IBSS atim    00 00
1819          * reserved        00 00 00 00
1820          * capability      02 00
1821          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1822          * fail timeout    ff 00
1823          * probe delay     00 00
1824          */
1825         memset(&cmd, 0, sizeof(cmd));
1826         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1827
1828         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1829         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1830         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1831         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1832         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1833         cmd.bss.ds.header.len = 1;
1834         cmd.bss.ds.channel = params->chandef.chan->hw_value;
1835         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1836         cmd.bss.ibss.header.len = 2;
1837         cmd.bss.ibss.atimwindow = 0;
1838         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1839
1840         /* set rates to the intersection of our rates and the rates in the
1841            bss */
1842         rcu_read_lock();
1843         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1844         if (!rates_eid) {
1845                 lbs_add_rates(cmd.bss.rates);
1846         } else {
1847                 int hw, i;
1848                 u8 rates_max = rates_eid[1];
1849                 u8 *rates = cmd.bss.rates;
1850                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1851                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1852                         for (i = 0; i < rates_max; i++) {
1853                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1854                                         u8 rate = rates_eid[i+2];
1855                                         if (rate == 0x02 || rate == 0x04 ||
1856                                             rate == 0x0b || rate == 0x16)
1857                                                 rate |= 0x80;
1858                                         *rates++ = rate;
1859                                 }
1860                         }
1861                 }
1862         }
1863         rcu_read_unlock();
1864
1865         /* Only v8 and below support setting this */
1866         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1867                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1868                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1869         }
1870         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1871         if (ret)
1872                 goto out;
1873
1874         /*
1875          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1876          *
1877          * response        2c 80
1878          * size            09 00
1879          * sequence        xx xx
1880          * result          00 00
1881          * reserved        00
1882          */
1883         lbs_join_post(priv, params, bss->bssid, bss->capability);
1884
1885  out:
1886         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1887         return ret;
1888 }
1889
1890
1891
1892 static int lbs_ibss_start_new(struct lbs_private *priv,
1893         struct cfg80211_ibss_params *params)
1894 {
1895         struct cmd_ds_802_11_ad_hoc_start cmd;
1896         struct cmd_ds_802_11_ad_hoc_result *resp =
1897                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1898         u8 preamble = RADIO_PREAMBLE_SHORT;
1899         int ret = 0;
1900         u16 capability;
1901
1902         lbs_deb_enter(LBS_DEB_CFG80211);
1903
1904         ret = lbs_set_radio(priv, preamble, 1);
1905         if (ret)
1906                 goto out;
1907
1908         /*
1909          * Example CMD_802_11_AD_HOC_START command:
1910          *
1911          * command         2b 00         CMD_802_11_AD_HOC_START
1912          * size            b1 00
1913          * sequence        xx xx
1914          * result          00 00
1915          * ssid            54 45 53 54 00 00 00 00
1916          *                 00 00 00 00 00 00 00 00
1917          *                 00 00 00 00 00 00 00 00
1918          *                 00 00 00 00 00 00 00 00
1919          * bss type        02
1920          * beacon period   64 00
1921          * dtim period     00
1922          * IE IBSS         06
1923          * IE IBSS len     02
1924          * IE IBSS atim    00 00
1925          * reserved        00 00 00 00
1926          * IE DS           03
1927          * IE DS len       01
1928          * IE DS channel   01
1929          * reserved        00 00 00 00
1930          * probe delay     00 00
1931          * capability      02 00
1932          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1933          *                 0c 12 18 24 30 48 60 6c
1934          * padding         100 bytes
1935          */
1936         memset(&cmd, 0, sizeof(cmd));
1937         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1938         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1939         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1940         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1941         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1942         cmd.ibss.header.len = 2;
1943         cmd.ibss.atimwindow = 0;
1944         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1945         cmd.ds.header.len = 1;
1946         cmd.ds.channel = params->chandef.chan->hw_value;
1947         /* Only v8 and below support setting probe delay */
1948         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1949                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1950         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1951         capability = WLAN_CAPABILITY_IBSS;
1952         cmd.capability = cpu_to_le16(capability);
1953         lbs_add_rates(cmd.rates);
1954
1955
1956         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1957         if (ret)
1958                 goto out;
1959
1960         /*
1961          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1962          *
1963          * response        2b 80
1964          * size            14 00
1965          * sequence        xx xx
1966          * result          00 00
1967          * reserved        00
1968          * bssid           02 2b 7b 0f 86 0e
1969          */
1970         lbs_join_post(priv, params, resp->bssid, capability);
1971
1972  out:
1973         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1974         return ret;
1975 }
1976
1977
1978 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1979                 struct cfg80211_ibss_params *params)
1980 {
1981         struct lbs_private *priv = wiphy_priv(wiphy);
1982         int ret = 0;
1983         struct cfg80211_bss *bss;
1984
1985         if (dev == priv->mesh_dev)
1986                 return -EOPNOTSUPP;
1987
1988         lbs_deb_enter(LBS_DEB_CFG80211);
1989
1990         if (!params->chandef.chan) {
1991                 ret = -ENOTSUPP;
1992                 goto out;
1993         }
1994
1995         ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1996         if (ret)
1997                 goto out;
1998
1999         /* Search if someone is beaconing. This assumes that the
2000          * bss list is populated already */
2001         bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2002                 params->ssid, params->ssid_len,
2003                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2004
2005         if (bss) {
2006                 ret = lbs_ibss_join_existing(priv, params, bss);
2007                 cfg80211_put_bss(wiphy, bss);
2008         } else
2009                 ret = lbs_ibss_start_new(priv, params);
2010
2011
2012  out:
2013         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2014         return ret;
2015 }
2016
2017
2018 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2019 {
2020         struct lbs_private *priv = wiphy_priv(wiphy);
2021         struct cmd_ds_802_11_ad_hoc_stop cmd;
2022         int ret = 0;
2023
2024         if (dev == priv->mesh_dev)
2025                 return -EOPNOTSUPP;
2026
2027         lbs_deb_enter(LBS_DEB_CFG80211);
2028
2029         memset(&cmd, 0, sizeof(cmd));
2030         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2031         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2032
2033         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2034         lbs_mac_event_disconnected(priv);
2035
2036         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2037         return ret;
2038 }
2039
2040
2041
2042
2043 /*
2044  * Initialization
2045  */
2046
2047 static struct cfg80211_ops lbs_cfg80211_ops = {
2048         .set_monitor_channel = lbs_cfg_set_monitor_channel,
2049         .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2050         .scan = lbs_cfg_scan,
2051         .connect = lbs_cfg_connect,
2052         .disconnect = lbs_cfg_disconnect,
2053         .add_key = lbs_cfg_add_key,
2054         .del_key = lbs_cfg_del_key,
2055         .set_default_key = lbs_cfg_set_default_key,
2056         .get_station = lbs_cfg_get_station,
2057         .change_virtual_intf = lbs_change_intf,
2058         .join_ibss = lbs_join_ibss,
2059         .leave_ibss = lbs_leave_ibss,
2060 };
2061
2062
2063 /*
2064  * At this time lbs_private *priv doesn't even exist, so we just allocate
2065  * memory and don't initialize the wiphy further. This is postponed until we
2066  * can talk to the firmware and happens at registration time in
2067  * lbs_cfg_wiphy_register().
2068  */
2069 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2070 {
2071         int ret = 0;
2072         struct wireless_dev *wdev;
2073
2074         lbs_deb_enter(LBS_DEB_CFG80211);
2075
2076         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2077         if (!wdev)
2078                 return ERR_PTR(-ENOMEM);
2079
2080         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2081         if (!wdev->wiphy) {
2082                 dev_err(dev, "cannot allocate wiphy\n");
2083                 ret = -ENOMEM;
2084                 goto err_wiphy_new;
2085         }
2086
2087         lbs_deb_leave(LBS_DEB_CFG80211);
2088         return wdev;
2089
2090  err_wiphy_new:
2091         kfree(wdev);
2092         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2093         return ERR_PTR(ret);
2094 }
2095
2096
2097 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2098 {
2099         struct region_code_mapping {
2100                 const char *cn;
2101                 int code;
2102         };
2103
2104         /* Section 5.17.2 */
2105         static const struct region_code_mapping regmap[] = {
2106                 {"US ", 0x10}, /* US FCC */
2107                 {"CA ", 0x20}, /* Canada */
2108                 {"EU ", 0x30}, /* ETSI   */
2109                 {"ES ", 0x31}, /* Spain  */
2110                 {"FR ", 0x32}, /* France */
2111                 {"JP ", 0x40}, /* Japan  */
2112         };
2113         size_t i;
2114
2115         lbs_deb_enter(LBS_DEB_CFG80211);
2116
2117         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2118                 if (regmap[i].code == priv->regioncode) {
2119                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2120                         break;
2121                 }
2122
2123         lbs_deb_leave(LBS_DEB_CFG80211);
2124 }
2125
2126 static void lbs_reg_notifier(struct wiphy *wiphy,
2127                              struct regulatory_request *request)
2128 {
2129         struct lbs_private *priv = wiphy_priv(wiphy);
2130
2131         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2132                         "callback for domain %c%c\n", request->alpha2[0],
2133                         request->alpha2[1]);
2134
2135         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2136         if (lbs_iface_active(priv))
2137                 lbs_set_11d_domain_info(priv);
2138
2139         lbs_deb_leave(LBS_DEB_CFG80211);
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 void lbs_scan_deinit(struct lbs_private *priv)
2194 {
2195         lbs_deb_enter(LBS_DEB_CFG80211);
2196         cancel_delayed_work_sync(&priv->scan_work);
2197 }
2198
2199
2200 void lbs_cfg_free(struct lbs_private *priv)
2201 {
2202         struct wireless_dev *wdev = priv->wdev;
2203
2204         lbs_deb_enter(LBS_DEB_CFG80211);
2205
2206         if (!wdev)
2207                 return;
2208
2209         if (priv->wiphy_registered)
2210                 wiphy_unregister(wdev->wiphy);
2211
2212         if (wdev->wiphy)
2213                 wiphy_free(wdev->wiphy);
2214
2215         kfree(wdev);
2216 }