drivers/net/wireless/mwifiex/cfg80211.c

   1 /*
   2  * Marvell Wireless LAN device driver: CFG80211
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "cfg80211.h"
  21 #include "main.h"
  22
  23 /*
  24  * This function maps the nl802.11 channel type into driver channel type.
  25  *
  26  * The mapping is as follows -
  27  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  28  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  29  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  30  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  31  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  32  */
  33 static u8
  34 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
  35                                                  channel_type)
  36 {
  37         switch (channel_type) {
  38         case NL80211_CHAN_NO_HT:
  39         case NL80211_CHAN_HT20:
  40                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  41         case NL80211_CHAN_HT40PLUS:
  42                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  43         case NL80211_CHAN_HT40MINUS:
  44                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  45         default:
  46                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  47         }
  48 }
  49
  50 /*
  51  * This function checks whether WEP is set.
  52  */
  53 static int
  54 mwifiex_is_alg_wep(u32 cipher)
  55 {
  56         switch (cipher) {
  57         case WLAN_CIPHER_SUITE_WEP40:
  58         case WLAN_CIPHER_SUITE_WEP104:
  59                 return 1;
  60         default:
  61                 break;
  62         }
  63
  64         return 0;
  65 }
  66
  67 /*
  68  * This function retrieves the private structure from kernel wiphy structure.
  69  */
  70 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
  71 {
  72         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
  73 }
  74
  75 /*
  76  * CFG802.11 operation handler to delete a network key.
  77  */
  78 static int
  79 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
  80                          u8 key_index, bool pairwise, const u8 *mac_addr)
  81 {
  82         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
  83
  84         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
  85                 wiphy_err(wiphy, "deleting the crypto keys\n");
  86                 return -EFAULT;
  87         }
  88
  89         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
  90         return 0;
  91 }
  92
  93 /*
  94  * CFG802.11 operation handler to set Tx power.
  95  */
  96 static int
  97 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
  98                               enum nl80211_tx_power_setting type,
  99                               int mbm)
 100 {
 101         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 102         struct mwifiex_power_cfg power_cfg;
 103         int dbm = MBM_TO_DBM(mbm);
 104
 105         if (type == NL80211_TX_POWER_FIXED) {
 106                 power_cfg.is_power_auto = 0;
 107                 power_cfg.power_level = dbm;
 108         } else {
 109                 power_cfg.is_power_auto = 1;
 110         }
 111
 112         return mwifiex_set_tx_power(priv, &power_cfg);
 113 }
 114
 115 /*
 116  * CFG802.11 operation handler to set Power Save option.
 117  *
 118  * The timeout value, if provided, is currently ignored.
 119  */
 120 static int
 121 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 122                                 struct net_device *dev,
 123                                 bool enabled, int timeout)
 124 {
 125         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 126         u32 ps_mode;
 127
 128         if (timeout)
 129                 wiphy_dbg(wiphy,
 130                           "info: ignore timeout value for IEEE Power Save\n");
 131
 132         ps_mode = enabled;
 133
 134         return mwifiex_drv_set_power(priv, &ps_mode);
 135 }
 136
 137 /*
 138  * CFG802.11 operation handler to set the default network key.
 139  */
 140 static int
 141 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 142                                  u8 key_index, bool unicast,
 143                                  bool multicast)
 144 {
 145         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 146
 147         /* Return if WEP key not configured */
 148         if (!priv->sec_info.wep_enabled)
 149                 return 0;
 150
 151         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 152                 wiphy_err(wiphy, "set default Tx key index\n");
 153                 return -EFAULT;
 154         }
 155
 156         return 0;
 157 }
 158
 159 /*
 160  * CFG802.11 operation handler to add a network key.
 161  */
 162 static int
 163 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 164                          u8 key_index, bool pairwise, const u8 *mac_addr,
 165                          struct key_params *params)
 166 {
 167         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 168
 169         if (mwifiex_set_encode(priv, params->key, params->key_len,
 170                                key_index, 0)) {
 171                 wiphy_err(wiphy, "crypto keys added\n");
 172                 return -EFAULT;
 173         }
 174
 175         return 0;
 176 }
 177
 178 /*
 179  * This function sends domain information to the firmware.
 180  *
 181  * The following information are passed to the firmware -
 182  *      - Country codes
 183  *      - Sub bands (first channel, number of channels, maximum Tx power)
 184  */
 185 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 186 {
 187         u8 no_of_triplet = 0;
 188         struct ieee80211_country_ie_triplet *t;
 189         u8 no_of_parsed_chan = 0;
 190         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 191         u8 i, flag = 0;
 192         enum ieee80211_band band;
 193         struct ieee80211_supported_band *sband;
 194         struct ieee80211_channel *ch;
 195         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 196         struct mwifiex_adapter *adapter = priv->adapter;
 197         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 198
 199         /* Set country code */
 200         domain_info->country_code[0] = priv->country_code[0];
 201         domain_info->country_code[1] = priv->country_code[1];
 202         domain_info->country_code[2] = ' ';
 203
 204         band = mwifiex_band_to_radio_type(adapter->config_bands);
 205         if (!wiphy->bands[band]) {
 206                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 207                 return -1;
 208         }
 209
 210         sband = wiphy->bands[band];
 211
 212         for (i = 0; i < sband->n_channels ; i++) {
 213                 ch = &sband->channels[i];
 214                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 215                         continue;
 216
 217                 if (!flag) {
 218                         flag = 1;
 219                         first_chan = (u32) ch->hw_value;
 220                         next_chan = first_chan;
 221                         max_pwr = ch->max_power;
 222                         no_of_parsed_chan = 1;
 223                         continue;
 224                 }
 225
 226                 if (ch->hw_value == next_chan + 1 &&
 227                     ch->max_power == max_pwr) {
 228                         next_chan++;
 229                         no_of_parsed_chan++;
 230                 } else {
 231                         t = &domain_info->triplet[no_of_triplet];
 232                         t->chans.first_channel = first_chan;
 233                         t->chans.num_channels = no_of_parsed_chan;
 234                         t->chans.max_power = max_pwr;
 235                         no_of_triplet++;
 236                         first_chan = (u32) ch->hw_value;
 237                         next_chan = first_chan;
 238                         max_pwr = ch->max_power;
 239                         no_of_parsed_chan = 1;
 240                 }
 241         }
 242
 243         if (flag) {
 244                 t = &domain_info->triplet[no_of_triplet];
 245                 t->chans.first_channel = first_chan;
 246                 t->chans.num_channels = no_of_parsed_chan;
 247                 t->chans.max_power = max_pwr;
 248                 no_of_triplet++;
 249         }
 250
 251         domain_info->no_of_triplet = no_of_triplet;
 252
 253         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 254                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 255                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 256                 return -1;
 257         }
 258
 259         return 0;
 260 }
 261
 262 /*
 263  * CFG802.11 regulatory domain callback function.
 264  *
 265  * This function is called when the regulatory domain is changed due to the
 266  * following reasons -
 267  *      - Set by driver
 268  *      - Set by system core
 269  *      - Set by user
 270  *      - Set bt Country IE
 271  */
 272 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 273                                 struct regulatory_request *request)
 274 {
 275         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 276
 277         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 278                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 279
 280         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 281
 282         switch (request->initiator) {
 283         case NL80211_REGDOM_SET_BY_DRIVER:
 284         case NL80211_REGDOM_SET_BY_CORE:
 285         case NL80211_REGDOM_SET_BY_USER:
 286                 break;
 287                 /* Todo: apply driver specific changes in channel flags based
 288                    on the request initiator if necessary. */
 289         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 290                 break;
 291         }
 292         mwifiex_send_domain_info_cmd_fw(wiphy);
 293
 294         return 0;
 295 }
 296
 297 /*
 298  * This function sets the RF channel.
 299  *
 300  * This function creates multiple IOCTL requests, populates them accordingly
 301  * and issues them to set the band/channel and frequency.
 302  */
 303 static int
 304 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 305                        struct ieee80211_channel *chan,
 306                        enum nl80211_channel_type channel_type)
 307 {
 308         struct mwifiex_chan_freq_power cfp;
 309         u32 config_bands = 0;
 310         struct wiphy *wiphy = priv->wdev->wiphy;
 311         struct mwifiex_adapter *adapter = priv->adapter;
 312
 313         if (chan) {
 314                 /* Set appropriate bands */
 315                 if (chan->band == IEEE80211_BAND_2GHZ) {
 316                         if (channel_type == NL80211_CHAN_NO_HT)
 317                                 if (priv->adapter->config_bands == BAND_B ||
 318                                     priv->adapter->config_bands == BAND_G)
 319                                         config_bands =
 320                                                 priv->adapter->config_bands;
 321                                 else
 322                                         config_bands = BAND_B | BAND_G;
 323                         else
 324                                 config_bands = BAND_B | BAND_G | BAND_GN;
 325                 } else {
 326                         if (channel_type == NL80211_CHAN_NO_HT)
 327                                 config_bands = BAND_A;
 328                         else
 329                                 config_bands = BAND_AN | BAND_A;
 330                 }
 331
 332                 if (!((config_bands | adapter->fw_bands) &
 333                                                 ~adapter->fw_bands)) {
 334                         adapter->config_bands = config_bands;
 335                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 336                                 adapter->adhoc_start_band = config_bands;
 337                                 if ((config_bands & BAND_GN) ||
 338                                     (config_bands & BAND_AN))
 339                                         adapter->adhoc_11n_enabled = true;
 340                                 else
 341                                         adapter->adhoc_11n_enabled = false;
 342                         }
 343                 }
 344                 adapter->sec_chan_offset =
 345                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 346                         (channel_type);
 347                 adapter->channel_type = channel_type;
 348         }
 349
 350         wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
 351                   config_bands, adapter->sec_chan_offset, priv->bss_mode);
 352         if (!chan)
 353                 return 0;
 354
 355         memset(&cfp, 0, sizeof(cfp));
 356         cfp.freq = chan->center_freq;
 357         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 358
 359         if (mwifiex_bss_set_channel(priv, &cfp))
 360                 return -EFAULT;
 361
 362         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 363 }
 364
 365 /*
 366  * CFG802.11 operation handler to set channel.
 367  *
 368  * This function can only be used when station is not connected.
 369  */
 370 static int
 371 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 372                              struct ieee80211_channel *chan,
 373                              enum nl80211_channel_type channel_type)
 374 {
 375         struct mwifiex_private *priv;
 376
 377         if (dev)
 378                 priv = mwifiex_netdev_get_priv(dev);
 379         else
 380                 priv = mwifiex_cfg80211_get_priv(wiphy);
 381
 382         if (priv->media_connected) {
 383                 wiphy_err(wiphy, "This setting is valid only when station "
 384                                 "is not connected\n");
 385                 return -EINVAL;
 386         }
 387
 388         return mwifiex_set_rf_channel(priv, chan, channel_type);
 389 }
 390
 391 /*
 392  * This function sets the fragmentation threshold.
 393  *
 394  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 395  * and MWIFIEX_FRAG_MAX_VALUE.
 396  */
 397 static int
 398 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 399 {
 400         int ret;
 401
 402         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 403             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 404                 return -EINVAL;
 405
 406         /* Send request to firmware */
 407         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 408                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 409                                     &frag_thr);
 410
 411         return ret;
 412 }
 413
 414 /*
 415  * This function sets the RTS threshold.
 416
 417  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 418  * and MWIFIEX_RTS_MAX_VALUE.
 419  */
 420 static int
 421 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 422 {
 423         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 424                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 425
 426         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 427                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 428                                     &rts_thr);
 429 }
 430
 431 /*
 432  * CFG802.11 operation handler to set wiphy parameters.
 433  *
 434  * This function can be used to set the RTS threshold and the
 435  * Fragmentation threshold of the driver.
 436  */
 437 static int
 438 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 439 {
 440         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 441         int ret = 0;
 442
 443         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 444                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 445                 if (ret)
 446                         return ret;
 447         }
 448
 449         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 450                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 451
 452         return ret;
 453 }
 454
 455 /*
 456  * CFG802.11 operation handler to change interface type.
 457  */
 458 static int
 459 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 460                                      struct net_device *dev,
 461                                      enum nl80211_iftype type, u32 *flags,
 462                                      struct vif_params *params)
 463 {
 464         int ret;
 465         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 466
 467         if (priv->bss_mode == type) {
 468                 wiphy_warn(wiphy, "already set to required type\n");
 469                 return 0;
 470         }
 471
 472         priv->bss_mode = type;
 473
 474         switch (type) {
 475         case NL80211_IFTYPE_ADHOC:
 476                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 477                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 478                 break;
 479         case NL80211_IFTYPE_STATION:
 480                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 481                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 482                 break;
 483         case NL80211_IFTYPE_UNSPECIFIED:
 484                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 485                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 486                 return 0;
 487         default:
 488                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 489                 return -EINVAL;
 490         }
 491
 492         mwifiex_deauthenticate(priv, NULL);
 493
 494         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 495
 496         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 497                                     HostCmd_ACT_GEN_SET, 0, NULL);
 498
 499         return ret;
 500 }
 501
 502 /*
 503  * This function dumps the station information on a buffer.
 504  *
 505  * The following information are shown -
 506  *      - Total bytes transmitted
 507  *      - Total bytes received
 508  *      - Total packets transmitted
 509  *      - Total packets received
 510  *      - Signal quality level
 511  *      - Transmission rate
 512  */
 513 static int
 514 mwifiex_dump_station_info(struct mwifiex_private *priv,
 515                           struct station_info *sinfo)
 516 {
 517         struct mwifiex_rate_cfg rate;
 518
 519         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 520                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 521                         STATION_INFO_TX_BITRATE |
 522                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 523
 524         /* Get signal information from the firmware */
 525         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 526                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 527                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 528                 return -EFAULT;
 529         }
 530
 531         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 532                 dev_err(priv->adapter->dev, "getting data rate\n");
 533                 return -EFAULT;
 534         }
 535
 536         /* Get DTIM period information from firmware */
 537         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 538                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 539                               &priv->dtim_period);
 540
 541         /*
 542          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 543          * MCS index values for us are 0 to 15.
 544          */
 545         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 546                 sinfo->txrate.mcs = priv->tx_rate;
 547                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 548                 /* 40MHz rate */
 549                 if (priv->tx_htinfo & BIT(1))
 550                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 551                 /* SGI enabled */
 552                 if (priv->tx_htinfo & BIT(2))
 553                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 554         }
 555
 556         sinfo->signal_avg = priv->bcn_rssi_avg;
 557         sinfo->rx_bytes = priv->stats.rx_bytes;
 558         sinfo->tx_bytes = priv->stats.tx_bytes;
 559         sinfo->rx_packets = priv->stats.rx_packets;
 560         sinfo->tx_packets = priv->stats.tx_packets;
 561         sinfo->signal = priv->bcn_rssi_avg;
 562         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 563         sinfo->txrate.legacy = rate.rate * 5;
 564
 565         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 566                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 567                 sinfo->bss_param.flags = 0;
 568                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 569                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 570                         sinfo->bss_param.flags |=
 571                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 572                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 573                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 574                         sinfo->bss_param.flags |=
 575                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 576                 sinfo->bss_param.dtim_period = priv->dtim_period;
 577                 sinfo->bss_param.beacon_interval =
 578                         priv->curr_bss_params.bss_descriptor.beacon_period;
 579         }
 580
 581         return 0;
 582 }
 583
 584 /*
 585  * CFG802.11 operation handler to get station information.
 586  *
 587  * This function only works in connected mode, and dumps the
 588  * requested station information, if available.
 589  */
 590 static int
 591 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 592                              u8 *mac, struct station_info *sinfo)
 593 {
 594         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 595
 596         if (!priv->media_connected)
 597                 return -ENOENT;
 598         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 599                 return -ENOENT;
 600
 601         return mwifiex_dump_station_info(priv, sinfo);
 602 }
 603
 604 /*
 605  * CFG802.11 operation handler to dump station information.
 606  */
 607 static int
 608 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 609                               int idx, u8 *mac, struct station_info *sinfo)
 610 {
 611         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 612
 613         if (!priv->media_connected || idx)
 614                 return -ENOENT;
 615
 616         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
 617
 618         return mwifiex_dump_station_info(priv, sinfo);
 619 }
 620
 621 /* Supported rates to be advertised to the cfg80211 */
 622
 623 static struct ieee80211_rate mwifiex_rates[] = {
 624         {.bitrate = 10, .hw_value = 2, },
 625         {.bitrate = 20, .hw_value = 4, },
 626         {.bitrate = 55, .hw_value = 11, },
 627         {.bitrate = 110, .hw_value = 22, },
 628         {.bitrate = 60, .hw_value = 12, },
 629         {.bitrate = 90, .hw_value = 18, },
 630         {.bitrate = 120, .hw_value = 24, },
 631         {.bitrate = 180, .hw_value = 36, },
 632         {.bitrate = 240, .hw_value = 48, },
 633         {.bitrate = 360, .hw_value = 72, },
 634         {.bitrate = 480, .hw_value = 96, },
 635         {.bitrate = 540, .hw_value = 108, },
 636 };
 637
 638 /* Channel definitions to be advertised to cfg80211 */
 639
 640 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 641         {.center_freq = 2412, .hw_value = 1, },
 642         {.center_freq = 2417, .hw_value = 2, },
 643         {.center_freq = 2422, .hw_value = 3, },
 644         {.center_freq = 2427, .hw_value = 4, },
 645         {.center_freq = 2432, .hw_value = 5, },
 646         {.center_freq = 2437, .hw_value = 6, },
 647         {.center_freq = 2442, .hw_value = 7, },
 648         {.center_freq = 2447, .hw_value = 8, },
 649         {.center_freq = 2452, .hw_value = 9, },
 650         {.center_freq = 2457, .hw_value = 10, },
 651         {.center_freq = 2462, .hw_value = 11, },
 652         {.center_freq = 2467, .hw_value = 12, },
 653         {.center_freq = 2472, .hw_value = 13, },
 654         {.center_freq = 2484, .hw_value = 14, },
 655 };
 656
 657 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 658         .channels = mwifiex_channels_2ghz,
 659         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 660         .bitrates = mwifiex_rates,
 661         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
 662 };
 663
 664 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 665         {.center_freq = 5040, .hw_value = 8, },
 666         {.center_freq = 5060, .hw_value = 12, },
 667         {.center_freq = 5080, .hw_value = 16, },
 668         {.center_freq = 5170, .hw_value = 34, },
 669         {.center_freq = 5190, .hw_value = 38, },
 670         {.center_freq = 5210, .hw_value = 42, },
 671         {.center_freq = 5230, .hw_value = 46, },
 672         {.center_freq = 5180, .hw_value = 36, },
 673         {.center_freq = 5200, .hw_value = 40, },
 674         {.center_freq = 5220, .hw_value = 44, },
 675         {.center_freq = 5240, .hw_value = 48, },
 676         {.center_freq = 5260, .hw_value = 52, },
 677         {.center_freq = 5280, .hw_value = 56, },
 678         {.center_freq = 5300, .hw_value = 60, },
 679         {.center_freq = 5320, .hw_value = 64, },
 680         {.center_freq = 5500, .hw_value = 100, },
 681         {.center_freq = 5520, .hw_value = 104, },
 682         {.center_freq = 5540, .hw_value = 108, },
 683         {.center_freq = 5560, .hw_value = 112, },
 684         {.center_freq = 5580, .hw_value = 116, },
 685         {.center_freq = 5600, .hw_value = 120, },
 686         {.center_freq = 5620, .hw_value = 124, },
 687         {.center_freq = 5640, .hw_value = 128, },
 688         {.center_freq = 5660, .hw_value = 132, },
 689         {.center_freq = 5680, .hw_value = 136, },
 690         {.center_freq = 5700, .hw_value = 140, },
 691         {.center_freq = 5745, .hw_value = 149, },
 692         {.center_freq = 5765, .hw_value = 153, },
 693         {.center_freq = 5785, .hw_value = 157, },
 694         {.center_freq = 5805, .hw_value = 161, },
 695         {.center_freq = 5825, .hw_value = 165, },
 696 };
 697
 698 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 699         .channels = mwifiex_channels_5ghz,
 700         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 701         .bitrates = mwifiex_rates + 4,
 702         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
 703 };
 704
 705
 706 /* Supported crypto cipher suits to be advertised to cfg80211 */
 707
 708 static const u32 mwifiex_cipher_suites[] = {
 709         WLAN_CIPHER_SUITE_WEP40,
 710         WLAN_CIPHER_SUITE_WEP104,
 711         WLAN_CIPHER_SUITE_TKIP,
 712         WLAN_CIPHER_SUITE_CCMP,
 713 };
 714
 715 /*
 716  * CFG802.11 operation handler for setting bit rates.
 717  *
 718  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 719  * Currently only 2.4GHz band is supported.
 720  */
 721 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 722                                 struct net_device *dev,
 723                                 const u8 *peer,
 724                                 const struct cfg80211_bitrate_mask *mask)
 725 {
 726         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 727         int index = 0, mode = 0, i;
 728         struct mwifiex_adapter *adapter = priv->adapter;
 729
 730         /* Currently only 2.4GHz is supported */
 731         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 732                 /*
 733                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 734                  * and from 6 they are OFDM; 802.11G
 735                  */
 736                 if (mwifiex_rates[i].bitrate == 60) {
 737                         index = 1 << i;
 738                         break;
 739                 }
 740         }
 741
 742         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 743                 mode = BAND_B;
 744         } else {
 745                 mode = BAND_G;
 746                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 747                         mode |=  BAND_B;
 748         }
 749
 750         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 751                 adapter->config_bands = mode;
 752                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 753                         adapter->adhoc_start_band = mode;
 754                         adapter->adhoc_11n_enabled = false;
 755                 }
 756         }
 757         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 758         adapter->channel_type = NL80211_CHAN_NO_HT;
 759
 760         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 761                     (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
 762
 763         return 0;
 764 }
 765
 766 /*
 767  * CFG802.11 operation handler for connection quality monitoring.
 768  *
 769  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
 770  * events to FW.
 771  */
 772 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
 773                                                 struct net_device *dev,
 774                                                 s32 rssi_thold, u32 rssi_hyst)
 775 {
 776         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 777         struct mwifiex_ds_misc_subsc_evt subsc_evt;
 778
 779         priv->cqm_rssi_thold = rssi_thold;
 780         priv->cqm_rssi_hyst = rssi_hyst;
 781
 782         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
 783         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
 784
 785         /* Subscribe/unsubscribe low and high rssi events */
 786         if (rssi_thold && rssi_hyst) {
 787                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
 788                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
 789                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
 790                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
 791                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
 792                 return mwifiex_send_cmd_sync(priv,
 793                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 794                                              0, 0, &subsc_evt);
 795         } else {
 796                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
 797                 return mwifiex_send_cmd_sync(priv,
 798                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 799                                              0, 0, &subsc_evt);
 800         }
 801
 802         return 0;
 803 }
 804
 805 /*
 806  * CFG802.11 operation handler for disconnection request.
 807  *
 808  * This function does not work when there is already a disconnection
 809  * procedure going on.
 810  */
 811 static int
 812 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 813                             u16 reason_code)
 814 {
 815         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 816
 817         if (mwifiex_deauthenticate(priv, NULL))
 818                 return -EFAULT;
 819
 820         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 821                 " reason code %d\n", priv->cfg_bssid, reason_code);
 822
 823         memset(priv->cfg_bssid, 0, ETH_ALEN);
 824
 825         return 0;
 826 }
 827
 828 /*
 829  * This function informs the CFG802.11 subsystem of a new IBSS.
 830  *
 831  * The following information are sent to the CFG802.11 subsystem
 832  * to register the new IBSS. If we do not register the new IBSS,
 833  * a kernel panic will result.
 834  *      - SSID
 835  *      - SSID length
 836  *      - BSSID
 837  *      - Channel
 838  */
 839 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 840 {
 841         struct ieee80211_channel *chan;
 842         struct mwifiex_bss_info bss_info;
 843         struct cfg80211_bss *bss;
 844         int ie_len;
 845         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 846         enum ieee80211_band band;
 847
 848         if (mwifiex_get_bss_info(priv, &bss_info))
 849                 return -1;
 850
 851         ie_buf[0] = WLAN_EID_SSID;
 852         ie_buf[1] = bss_info.ssid.ssid_len;
 853
 854         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 855                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
 856         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 857
 858         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 859         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 860                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 861                                                        band));
 862
 863         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 864                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 865                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
 866         cfg80211_put_bss(bss);
 867         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 868
 869         return 0;
 870 }
 871
 872 /*
 873  * This function connects with a BSS.
 874  *
 875  * This function handles both Infra and Ad-Hoc modes. It also performs
 876  * validity checking on the provided parameters, disconnects from the
 877  * current BSS (if any), sets up the association/scan parameters,
 878  * including security settings, and performs specific SSID scan before
 879  * trying to connect.
 880  *
 881  * For Infra mode, the function returns failure if the specified SSID
 882  * is not found in scan table. However, for Ad-Hoc mode, it can create
 883  * the IBSS if it does not exist. On successful completion in either case,
 884  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 885  */
 886 static int
 887 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 888                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 889                        struct cfg80211_connect_params *sme, bool privacy)
 890 {
 891         struct cfg80211_ssid req_ssid;
 892         int ret, auth_type = 0;
 893         struct cfg80211_bss *bss = NULL;
 894         u8 is_scanning_required = 0;
 895
 896         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
 897
 898         req_ssid.ssid_len = ssid_len;
 899         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 900                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 901                 return -EINVAL;
 902         }
 903
 904         memcpy(req_ssid.ssid, ssid, ssid_len);
 905         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 906                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 907                 return -EINVAL;
 908         }
 909
 910         /* disconnect before try to associate */
 911         mwifiex_deauthenticate(priv, NULL);
 912
 913         if (channel)
 914                 ret = mwifiex_set_rf_channel(priv, channel,
 915                                                 priv->adapter->channel_type);
 916
 917         /* As this is new association, clear locally stored
 918          * keys and security related flags */
 919         priv->sec_info.wpa_enabled = false;
 920         priv->sec_info.wpa2_enabled = false;
 921         priv->wep_key_curr_index = 0;
 922         priv->sec_info.encryption_mode = 0;
 923         priv->sec_info.is_authtype_auto = 0;
 924         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
 925
 926         if (mode == NL80211_IFTYPE_ADHOC) {
 927                 /* "privacy" is set only for ad-hoc mode */
 928                 if (privacy) {
 929                         /*
 930                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 931                          * the firmware can find a matching network from the
 932                          * scan. The cfg80211 does not give us the encryption
 933                          * mode at this stage so just setting it to WEP here.
 934                          */
 935                         priv->sec_info.encryption_mode =
 936                                         WLAN_CIPHER_SUITE_WEP104;
 937                         priv->sec_info.authentication_mode =
 938                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 939                 }
 940
 941                 goto done;
 942         }
 943
 944         /* Now handle infra mode. "sme" is valid for infra mode only */
 945         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
 946                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 947                 priv->sec_info.is_authtype_auto = 1;
 948         } else {
 949                 auth_type = sme->auth_type;
 950         }
 951
 952         if (sme->crypto.n_ciphers_pairwise) {
 953                 priv->sec_info.encryption_mode =
 954                                                 sme->crypto.ciphers_pairwise[0];
 955                 priv->sec_info.authentication_mode = auth_type;
 956         }
 957
 958         if (sme->crypto.cipher_group) {
 959                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 960                 priv->sec_info.authentication_mode = auth_type;
 961         }
 962         if (sme->ie)
 963                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 964
 965         if (sme->key) {
 966                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 967                         dev_dbg(priv->adapter->dev,
 968                                 "info: setting wep encryption"
 969                                 " with key len %d\n", sme->key_len);
 970                         priv->wep_key_curr_index = sme->key_idx;
 971                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 972                                                         sme->key_idx, 0);
 973                 }
 974         }
 975 done:
 976         /*
 977          * Scan entries are valid for some time (15 sec). So we can save one
 978          * active scan time if we just try cfg80211_get_bss first. If it fails
 979          * then request scan and cfg80211_get_bss() again for final output.
 980          */
 981         while (1) {
 982                 if (is_scanning_required) {
 983                         /* Do specific SSID scanning */
 984                         if (mwifiex_request_scan(priv, &req_ssid)) {
 985                                 dev_err(priv->adapter->dev, "scan error\n");
 986                                 return -EFAULT;
 987                         }
 988                 }
 989
 990                 /* Find the BSS we want using available scan results */
 991                 if (mode == NL80211_IFTYPE_ADHOC)
 992                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 993                                                bssid, ssid, ssid_len,
 994                                                WLAN_CAPABILITY_IBSS,
 995                                                WLAN_CAPABILITY_IBSS);
 996                 else
 997                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 998                                                bssid, ssid, ssid_len,
 999                                                WLAN_CAPABILITY_ESS,
1000                                                WLAN_CAPABILITY_ESS);
1001
1002                 if (!bss) {
1003                         if (is_scanning_required) {
1004                                 dev_warn(priv->adapter->dev,
1005                                          "assoc: requested bss not found in scan results\n");
1006                                 break;
1007                         }
1008                         is_scanning_required = 1;
1009                 } else {
1010                         dev_dbg(priv->adapter->dev,
1011                                 "info: trying to associate to '%s' bssid %pM\n",
1012                                 (char *) req_ssid.ssid, bss->bssid);
1013                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1014                         break;
1015                 }
1016         }
1017
1018         if (mwifiex_bss_start(priv, bss, &req_ssid))
1019                 return -EFAULT;
1020
1021         if (mode == NL80211_IFTYPE_ADHOC) {
1022                 /* Inform the BSS information to kernel, otherwise
1023                  * kernel will give a panic after successful assoc */
1024                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1025                         return -EFAULT;
1026         }
1027
1028         return ret;
1029 }
1030
1031 /*
1032  * CFG802.11 operation handler for association request.
1033  *
1034  * This function does not work when the current mode is set to Ad-Hoc, or
1035  * when there is already an association procedure going on. The given BSS
1036  * information is used to associate.
1037  */
1038 static int
1039 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1040                          struct cfg80211_connect_params *sme)
1041 {
1042         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1043         int ret = 0;
1044
1045         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1046                 wiphy_err(wiphy, "received infra assoc request "
1047                                 "when station is in ibss mode\n");
1048                 goto done;
1049         }
1050
1051         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1052                   (char *) sme->ssid, sme->bssid);
1053
1054         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1055                                      priv->bss_mode, sme->channel, sme, 0);
1056 done:
1057         if (!ret) {
1058                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1059                                         NULL, 0, WLAN_STATUS_SUCCESS,
1060                                         GFP_KERNEL);
1061                 dev_dbg(priv->adapter->dev,
1062                         "info: associated to bssid %pM successfully\n",
1063                         priv->cfg_bssid);
1064         } else {
1065                 dev_dbg(priv->adapter->dev,
1066                         "info: association to bssid %pM failed\n",
1067                         priv->cfg_bssid);
1068                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1069         }
1070
1071         return ret;
1072 }
1073
1074 /*
1075  * CFG802.11 operation handler to join an IBSS.
1076  *
1077  * This function does not work in any mode other than Ad-Hoc, or if
1078  * a join operation is already in progress.
1079  */
1080 static int
1081 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1082                            struct cfg80211_ibss_params *params)
1083 {
1084         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1085         int ret = 0;
1086
1087         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1088                 wiphy_err(wiphy, "request to join ibss received "
1089                                 "when station is not in ibss mode\n");
1090                 goto done;
1091         }
1092
1093         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1094                   (char *) params->ssid, params->bssid);
1095
1096         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1097                                      params->bssid, priv->bss_mode,
1098                                      params->channel, NULL, params->privacy);
1099 done:
1100         if (!ret) {
1101                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1102                 dev_dbg(priv->adapter->dev,
1103                         "info: joined/created adhoc network with bssid"
1104                         " %pM successfully\n", priv->cfg_bssid);
1105         } else {
1106                 dev_dbg(priv->adapter->dev,
1107                         "info: failed creating/joining adhoc network\n");
1108         }
1109
1110         return ret;
1111 }
1112
1113 /*
1114  * CFG802.11 operation handler to leave an IBSS.
1115  *
1116  * This function does not work if a leave operation is
1117  * already in progress.
1118  */
1119 static int
1120 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1121 {
1122         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1123
1124         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1125                   priv->cfg_bssid);
1126         if (mwifiex_deauthenticate(priv, NULL))
1127                 return -EFAULT;
1128
1129         memset(priv->cfg_bssid, 0, ETH_ALEN);
1130
1131         return 0;
1132 }
1133
1134 /*
1135  * CFG802.11 operation handler for scan request.
1136  *
1137  * This function issues a scan request to the firmware based upon
1138  * the user specified scan configuration. On successfull completion,
1139  * it also informs the results.
1140  */
1141 static int
1142 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1143                       struct cfg80211_scan_request *request)
1144 {
1145         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1146         int i;
1147         struct ieee80211_channel *chan;
1148
1149         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1150
1151         priv->scan_request = request;
1152
1153         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1154                                       GFP_KERNEL);
1155         if (!priv->user_scan_cfg) {
1156                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1157                 return -ENOMEM;
1158         }
1159
1160         priv->user_scan_cfg->num_ssids = request->n_ssids;
1161         priv->user_scan_cfg->ssid_list = request->ssids;
1162
1163         if (request->ie && request->ie_len) {
1164                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1165                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1166                                 continue;
1167                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1168                         memcpy(&priv->vs_ie[i].ie, request->ie,
1169                                request->ie_len);
1170                         break;
1171                 }
1172         }
1173
1174         for (i = 0; i < request->n_channels; i++) {
1175                 chan = request->channels[i];
1176                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1177                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1178
1179                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1180                         priv->user_scan_cfg->chan_list[i].scan_type =
1181                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1182                 else
1183                         priv->user_scan_cfg->chan_list[i].scan_type =
1184                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1185
1186                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1187         }
1188         if (mwifiex_scan_networks(priv, priv->user_scan_cfg))
1189                 return -EFAULT;
1190
1191         if (request->ie && request->ie_len) {
1192                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1193                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1194                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1195                                 memset(&priv->vs_ie[i].ie, 0,
1196                                        MWIFIEX_MAX_VSIE_LEN);
1197                         }
1198                 }
1199         }
1200         return 0;
1201 }
1202
1203 /*
1204  * This function sets up the CFG802.11 specific HT capability fields
1205  * with default values.
1206  *
1207  * The following default values are set -
1208  *      - HT Supported = True
1209  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1210  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1211  *      - HT Capabilities supported by firmware
1212  *      - MCS information, Rx mask = 0xff
1213  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1214  */
1215 static void
1216 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1217                       struct mwifiex_private *priv)
1218 {
1219         int rx_mcs_supp;
1220         struct ieee80211_mcs_info mcs_set;
1221         u8 *mcs = (u8 *)&mcs_set;
1222         struct mwifiex_adapter *adapter = priv->adapter;
1223
1224         ht_info->ht_supported = true;
1225         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1226         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1227
1228         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1229
1230         /* Fill HT capability information */
1231         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1232                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1233         else
1234                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1235
1236         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1237                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1238         else
1239                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1240
1241         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1242                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1243         else
1244                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1245
1246         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1247                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1248         else
1249                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1250
1251         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1252                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1253         else
1254                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1255
1256         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1257         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1258
1259         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1260         /* Set MCS for 1x1 */
1261         memset(mcs, 0xff, rx_mcs_supp);
1262         /* Clear all the other values */
1263         memset(&mcs[rx_mcs_supp], 0,
1264                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1265         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1266             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1267                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1268                 SETHT_MCS32(mcs_set.rx_mask);
1269
1270         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1271
1272         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1273 }
1274
1275 /*
1276  *  create a new virtual interface with the given name
1277  */
1278 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1279                                             char *name,
1280                                             enum nl80211_iftype type,
1281                                             u32 *flags,
1282                                             struct vif_params *params)
1283 {
1284         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1285         struct mwifiex_adapter *adapter;
1286         struct net_device *dev;
1287         void *mdev_priv;
1288
1289         if (!priv)
1290                 return ERR_PTR(-EFAULT);
1291
1292         adapter = priv->adapter;
1293         if (!adapter)
1294                 return ERR_PTR(-EFAULT);
1295
1296         switch (type) {
1297         case NL80211_IFTYPE_UNSPECIFIED:
1298         case NL80211_IFTYPE_STATION:
1299         case NL80211_IFTYPE_ADHOC:
1300                 if (priv->bss_mode) {
1301                         wiphy_err(wiphy, "cannot create multiple"
1302                                         " station/adhoc interfaces\n");
1303                         return ERR_PTR(-EINVAL);
1304                 }
1305
1306                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1307                         priv->bss_mode = NL80211_IFTYPE_STATION;
1308                 else
1309                         priv->bss_mode = type;
1310
1311                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1312                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1313                 priv->bss_priority = 0;
1314                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1315                 priv->bss_num = 0;
1316
1317                 break;
1318         default:
1319                 wiphy_err(wiphy, "type not supported\n");
1320                 return ERR_PTR(-EINVAL);
1321         }
1322
1323         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1324                               ether_setup, 1);
1325         if (!dev) {
1326                 wiphy_err(wiphy, "no memory available for netdevice\n");
1327                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1328                 return ERR_PTR(-ENOMEM);
1329         }
1330
1331         dev_net_set(dev, wiphy_net(wiphy));
1332         dev->ieee80211_ptr = priv->wdev;
1333         dev->ieee80211_ptr->iftype = priv->bss_mode;
1334         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1335         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1336         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1337
1338         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1339         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1340         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1341
1342         mdev_priv = netdev_priv(dev);
1343         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1344
1345         priv->netdev = dev;
1346         mwifiex_init_priv_params(priv, dev);
1347
1348         SET_NETDEV_DEV(dev, adapter->dev);
1349
1350         /* Register network device */
1351         if (register_netdevice(dev)) {
1352                 wiphy_err(wiphy, "cannot register virtual network device\n");
1353                 free_netdev(dev);
1354                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1355                 return ERR_PTR(-EFAULT);
1356         }
1357
1358         sema_init(&priv->async_sem, 1);
1359         priv->scan_pending_on_block = false;
1360
1361         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1362
1363 #ifdef CONFIG_DEBUG_FS
1364         mwifiex_dev_debugfs_init(priv);
1365 #endif
1366         return dev;
1367 }
1368 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1369
1370 /*
1371  * del_virtual_intf: remove the virtual interface determined by dev
1372  */
1373 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1374 {
1375         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1376
1377 #ifdef CONFIG_DEBUG_FS
1378         mwifiex_dev_debugfs_remove(priv);
1379 #endif
1380
1381         if (!netif_queue_stopped(priv->netdev))
1382                 netif_stop_queue(priv->netdev);
1383
1384         if (netif_carrier_ok(priv->netdev))
1385                 netif_carrier_off(priv->netdev);
1386
1387         if (dev->reg_state == NETREG_REGISTERED)
1388                 unregister_netdevice(dev);
1389
1390         if (dev->reg_state == NETREG_UNREGISTERED)
1391                 free_netdev(dev);
1392
1393         /* Clear the priv in adapter */
1394         priv->netdev = NULL;
1395
1396         priv->media_connected = false;
1397
1398         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1399
1400         return 0;
1401 }
1402 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1403
1404 /* station cfg80211 operations */
1405 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1406         .add_virtual_intf = mwifiex_add_virtual_intf,
1407         .del_virtual_intf = mwifiex_del_virtual_intf,
1408         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1409         .scan = mwifiex_cfg80211_scan,
1410         .connect = mwifiex_cfg80211_connect,
1411         .disconnect = mwifiex_cfg80211_disconnect,
1412         .get_station = mwifiex_cfg80211_get_station,
1413         .dump_station = mwifiex_cfg80211_dump_station,
1414         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1415         .set_channel = mwifiex_cfg80211_set_channel,
1416         .join_ibss = mwifiex_cfg80211_join_ibss,
1417         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1418         .add_key = mwifiex_cfg80211_add_key,
1419         .del_key = mwifiex_cfg80211_del_key,
1420         .set_default_key = mwifiex_cfg80211_set_default_key,
1421         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1422         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1423         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1424         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1425 };
1426
1427 /*
1428  * This function registers the device with CFG802.11 subsystem.
1429  *
1430  * The function creates the wireless device/wiphy, populates it with
1431  * default parameters and handler function pointers, and finally
1432  * registers the device.
1433  */
1434 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1435 {
1436         int ret;
1437         void *wdev_priv;
1438         struct wireless_dev *wdev;
1439         struct ieee80211_sta_ht_cap *ht_info;
1440         u8 *country_code;
1441
1442         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1443         if (!wdev) {
1444                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1445                         __func__);
1446                 return -ENOMEM;
1447         }
1448         wdev->wiphy =
1449                 wiphy_new(&mwifiex_cfg80211_ops,
1450                           sizeof(struct mwifiex_private *));
1451         if (!wdev->wiphy) {
1452                 kfree(wdev);
1453                 return -ENOMEM;
1454         }
1455         wdev->iftype = NL80211_IFTYPE_STATION;
1456         wdev->wiphy->max_scan_ssids = 10;
1457         wdev->wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1458         wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1459                                        BIT(NL80211_IFTYPE_ADHOC);
1460
1461         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1462         ht_info = &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap;
1463         mwifiex_setup_ht_caps(ht_info, priv);
1464
1465         if (priv->adapter->config_bands & BAND_A) {
1466                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1467                 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap;
1468                 mwifiex_setup_ht_caps(ht_info, priv);
1469         } else {
1470                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1471         }
1472
1473         /* Initialize cipher suits */
1474         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1475         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1476
1477         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1478         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1479
1480         /* Reserve space for mwifiex specific private data for BSS */
1481         wdev->wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1482
1483         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1484
1485         /* Set struct mwifiex_private pointer in wiphy_priv */
1486         wdev_priv = wiphy_priv(wdev->wiphy);
1487
1488         *(unsigned long *) wdev_priv = (unsigned long) priv;
1489
1490         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1491
1492         ret = wiphy_register(wdev->wiphy);
1493         if (ret < 0) {
1494                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1495                         __func__);
1496                 wiphy_free(wdev->wiphy);
1497                 kfree(wdev);
1498                 return ret;
1499         } else {
1500                 dev_dbg(priv->adapter->dev,
1501                         "info: successfully registered wiphy device\n");
1502         }
1503
1504         country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1505         if (country_code && regulatory_hint(wdev->wiphy, country_code))
1506                 dev_err(priv->adapter->dev,
1507                         "%s: regulatory_hint failed\n", __func__);
1508
1509         priv->wdev = wdev;
1510
1511         return ret;
1512 }