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: ignoring the timeout value"
 131                         " for IEEE power save\n");
 132
 133         ps_mode = enabled;
 134
 135         return mwifiex_drv_set_power(priv, &ps_mode);
 136 }
 137
 138 /*
 139  * CFG802.11 operation handler to set the default network key.
 140  */
 141 static int
 142 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 143                                  u8 key_index, bool unicast,
 144                                  bool multicast)
 145 {
 146         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 147
 148         /* Return if WEP key not configured */
 149         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 150                 return 0;
 151
 152         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 153                 wiphy_err(wiphy, "set default Tx key index\n");
 154                 return -EFAULT;
 155         }
 156
 157         return 0;
 158 }
 159
 160 /*
 161  * CFG802.11 operation handler to add a network key.
 162  */
 163 static int
 164 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 165                          u8 key_index, bool pairwise, const u8 *mac_addr,
 166                          struct key_params *params)
 167 {
 168         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 169
 170         if (mwifiex_set_encode(priv, params->key, params->key_len,
 171                                                         key_index, 0)) {
 172                 wiphy_err(wiphy, "crypto keys added\n");
 173                 return -EFAULT;
 174         }
 175
 176         return 0;
 177 }
 178
 179 /*
 180  * This function sends domain information to the firmware.
 181  *
 182  * The following information are passed to the firmware -
 183  *      - Country codes
 184  *      - Sub bands (first channel, number of channels, maximum Tx power)
 185  */
 186 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 187 {
 188         u8 no_of_triplet = 0;
 189         struct ieee80211_country_ie_triplet *t;
 190         u8 no_of_parsed_chan = 0;
 191         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 192         u8 i, flag = 0;
 193         enum ieee80211_band band;
 194         struct ieee80211_supported_band *sband;
 195         struct ieee80211_channel *ch;
 196         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 197         struct mwifiex_adapter *adapter = priv->adapter;
 198         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 199
 200         /* Set country code */
 201         domain_info->country_code[0] = priv->country_code[0];
 202         domain_info->country_code[1] = priv->country_code[1];
 203         domain_info->country_code[2] = ' ';
 204
 205         band = mwifiex_band_to_radio_type(adapter->config_bands);
 206         if (!wiphy->bands[band]) {
 207                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 208                 return -1;
 209         }
 210
 211         sband = wiphy->bands[band];
 212
 213         for (i = 0; i < sband->n_channels ; i++) {
 214                 ch = &sband->channels[i];
 215                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 216                         continue;
 217
 218                 if (!flag) {
 219                         flag = 1;
 220                         first_chan = (u32) ch->hw_value;
 221                         next_chan = first_chan;
 222                         max_pwr = ch->max_power;
 223                         no_of_parsed_chan = 1;
 224                         continue;
 225                 }
 226
 227                 if (ch->hw_value == next_chan + 1 &&
 228                                 ch->max_power == max_pwr) {
 229                         next_chan++;
 230                         no_of_parsed_chan++;
 231                 } else {
 232                         t = &domain_info->triplet[no_of_triplet];
 233                         t->chans.first_channel = first_chan;
 234                         t->chans.num_channels = no_of_parsed_chan;
 235                         t->chans.max_power = max_pwr;
 236                         no_of_triplet++;
 237                         first_chan = (u32) ch->hw_value;
 238                         next_chan = first_chan;
 239                         max_pwr = ch->max_power;
 240                         no_of_parsed_chan = 1;
 241                 }
 242         }
 243
 244         if (flag) {
 245                 t = &domain_info->triplet[no_of_triplet];
 246                 t->chans.first_channel = first_chan;
 247                 t->chans.num_channels = no_of_parsed_chan;
 248                 t->chans.max_power = max_pwr;
 249                 no_of_triplet++;
 250         }
 251
 252         domain_info->no_of_triplet = no_of_triplet;
 253
 254         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 255                                      HostCmd_ACT_GEN_SET, 0, NULL)) {
 256                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 257                 return -1;
 258         }
 259
 260         return 0;
 261 }
 262
 263 /*
 264  * CFG802.11 regulatory domain callback function.
 265  *
 266  * This function is called when the regulatory domain is changed due to the
 267  * following reasons -
 268  *      - Set by driver
 269  *      - Set by system core
 270  *      - Set by user
 271  *      - Set bt Country IE
 272  */
 273 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 274                 struct regulatory_request *request)
 275 {
 276         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 277
 278         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 279                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 280
 281         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 282
 283         switch (request->initiator) {
 284         case NL80211_REGDOM_SET_BY_DRIVER:
 285         case NL80211_REGDOM_SET_BY_CORE:
 286         case NL80211_REGDOM_SET_BY_USER:
 287                 break;
 288                 /* Todo: apply driver specific changes in channel flags based
 289                    on the request initiator if necessary. */
 290         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 291                 break;
 292         }
 293         mwifiex_send_domain_info_cmd_fw(wiphy);
 294
 295         return 0;
 296 }
 297
 298 /*
 299  * This function sets the RF channel.
 300  *
 301  * This function creates multiple IOCTL requests, populates them accordingly
 302  * and issues them to set the band/channel and frequency.
 303  */
 304 static int
 305 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 306                        struct ieee80211_channel *chan,
 307                        enum nl80211_channel_type channel_type)
 308 {
 309         struct mwifiex_chan_freq_power cfp;
 310         u32 config_bands = 0;
 311         struct wiphy *wiphy = priv->wdev->wiphy;
 312         struct mwifiex_adapter *adapter = priv->adapter;
 313
 314         if (chan) {
 315                 /* Set appropriate bands */
 316                 if (chan->band == IEEE80211_BAND_2GHZ) {
 317                         if (channel_type == NL80211_CHAN_NO_HT)
 318                                 if (priv->adapter->config_bands == BAND_B ||
 319                                           priv->adapter->config_bands == BAND_G)
 320                                         config_bands =
 321                                                 priv->adapter->config_bands;
 322                                 else
 323                                         config_bands = BAND_B | BAND_G;
 324                         else
 325                                 config_bands = BAND_B | BAND_G | BAND_GN;
 326                 } else {
 327                         if (channel_type == NL80211_CHAN_NO_HT)
 328                                 config_bands = BAND_A;
 329                         else
 330                                 config_bands = BAND_AN | BAND_A;
 331                 }
 332
 333                 if (!((config_bands | adapter->fw_bands) &
 334                                                 ~adapter->fw_bands)) {
 335                         adapter->config_bands = config_bands;
 336                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 337                                 adapter->adhoc_start_band = config_bands;
 338                                 if ((config_bands & BAND_GN) ||
 339                                                 (config_bands & BAND_AN))
 340                                         adapter->adhoc_11n_enabled = true;
 341                                 else
 342                                         adapter->adhoc_11n_enabled = false;
 343                         }
 344                 }
 345                 adapter->sec_chan_offset =
 346                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 347                         (channel_type);
 348                 adapter->channel_type = channel_type;
 349
 350                 mwifiex_send_domain_info_cmd_fw(wiphy);
 351         }
 352
 353         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 354                 "mode %d\n", config_bands, adapter->sec_chan_offset,
 355                 priv->bss_mode);
 356         if (!chan)
 357                 return 0;
 358
 359         memset(&cfp, 0, sizeof(cfp));
 360         cfp.freq = chan->center_freq;
 361         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 362
 363         if (mwifiex_bss_set_channel(priv, &cfp))
 364                 return -EFAULT;
 365
 366         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 367 }
 368
 369 /*
 370  * CFG802.11 operation handler to set channel.
 371  *
 372  * This function can only be used when station is not connected.
 373  */
 374 static int
 375 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 376                              struct ieee80211_channel *chan,
 377                              enum nl80211_channel_type channel_type)
 378 {
 379         struct mwifiex_private *priv;
 380
 381         if (dev)
 382                 priv = mwifiex_netdev_get_priv(dev);
 383         else
 384                 priv = mwifiex_cfg80211_get_priv(wiphy);
 385
 386         if (priv->media_connected) {
 387                 wiphy_err(wiphy, "This setting is valid only when station "
 388                                 "is not connected\n");
 389                 return -EINVAL;
 390         }
 391
 392         return mwifiex_set_rf_channel(priv, chan, channel_type);
 393 }
 394
 395 /*
 396  * This function sets the fragmentation threshold.
 397  *
 398  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 399  * and MWIFIEX_FRAG_MAX_VALUE.
 400  */
 401 static int
 402 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 403 {
 404         int ret;
 405
 406         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 407             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 408                 return -EINVAL;
 409
 410         /* Send request to firmware */
 411         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 412                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 413                                     &frag_thr);
 414
 415         return ret;
 416 }
 417
 418 /*
 419  * This function sets the RTS threshold.
 420
 421  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 422  * and MWIFIEX_RTS_MAX_VALUE.
 423  */
 424 static int
 425 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 426 {
 427         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 428                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 429
 430         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 431                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 432                                     &rts_thr);
 433 }
 434
 435 /*
 436  * CFG802.11 operation handler to set wiphy parameters.
 437  *
 438  * This function can be used to set the RTS threshold and the
 439  * Fragmentation threshold of the driver.
 440  */
 441 static int
 442 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 443 {
 444         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 445         int ret = 0;
 446
 447         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 448                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 449                 if (ret)
 450                         return ret;
 451         }
 452
 453         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 454                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 455
 456         return ret;
 457 }
 458
 459 /*
 460  * CFG802.11 operation handler to change interface type.
 461  */
 462 static int
 463 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 464                                      struct net_device *dev,
 465                                      enum nl80211_iftype type, u32 *flags,
 466                                      struct vif_params *params)
 467 {
 468         int ret;
 469         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 470
 471         if (priv->bss_mode == type) {
 472                 wiphy_warn(wiphy, "already set to required type\n");
 473                 return 0;
 474         }
 475
 476         priv->bss_mode = type;
 477
 478         switch (type) {
 479         case NL80211_IFTYPE_ADHOC:
 480                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 481                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 482                 break;
 483         case NL80211_IFTYPE_STATION:
 484                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 485                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 486                 break;
 487         case NL80211_IFTYPE_UNSPECIFIED:
 488                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 489                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 490                 return 0;
 491         default:
 492                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 493                 return -EINVAL;
 494         }
 495
 496         mwifiex_deauthenticate(priv, NULL);
 497
 498         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 499
 500         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 501                                     HostCmd_ACT_GEN_SET, 0, NULL);
 502
 503         return ret;
 504 }
 505
 506 /*
 507  * This function dumps the station information on a buffer.
 508  *
 509  * The following information are shown -
 510  *      - Total bytes transmitted
 511  *      - Total bytes received
 512  *      - Total packets transmitted
 513  *      - Total packets received
 514  *      - Signal quality level
 515  *      - Transmission rate
 516  */
 517 static int
 518 mwifiex_dump_station_info(struct mwifiex_private *priv,
 519                           struct station_info *sinfo)
 520 {
 521         struct mwifiex_ds_get_signal signal;
 522         struct mwifiex_rate_cfg rate;
 523         int ret = 0;
 524
 525         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 526                 STATION_INFO_RX_PACKETS |
 527                 STATION_INFO_TX_PACKETS
 528                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 529
 530         /* Get signal information from the firmware */
 531         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 532         if (mwifiex_get_signal_info(priv, &signal)) {
 533                 dev_err(priv->adapter->dev, "getting signal information\n");
 534                 ret = -EFAULT;
 535         }
 536
 537         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 538                 dev_err(priv->adapter->dev, "getting data rate\n");
 539                 ret = -EFAULT;
 540         }
 541
 542         /* Get DTIM period information from firmware */
 543         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 544                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 545                               &priv->dtim_period);
 546
 547         /*
 548          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 549          * MCS index values for us are 0 to 7.
 550          */
 551         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
 552                 sinfo->txrate.mcs = priv->tx_rate;
 553                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 554                 /* 40MHz rate */
 555                 if (priv->tx_htinfo & BIT(1))
 556                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 557                 /* SGI enabled */
 558                 if (priv->tx_htinfo & BIT(2))
 559                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 560         }
 561
 562         sinfo->rx_bytes = priv->stats.rx_bytes;
 563         sinfo->tx_bytes = priv->stats.tx_bytes;
 564         sinfo->rx_packets = priv->stats.rx_packets;
 565         sinfo->tx_packets = priv->stats.tx_packets;
 566         sinfo->signal = priv->qual_level;
 567         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 568         sinfo->txrate.legacy = rate.rate * 5;
 569
 570         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 571                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 572                 sinfo->bss_param.flags = 0;
 573                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 574                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 575                         sinfo->bss_param.flags |=
 576                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 577                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 578                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 579                         sinfo->bss_param.flags |=
 580                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 581                 sinfo->bss_param.dtim_period = priv->dtim_period;
 582                 sinfo->bss_param.beacon_interval =
 583                         priv->curr_bss_params.bss_descriptor.beacon_period;
 584         }
 585
 586         return ret;
 587 }
 588
 589 /*
 590  * CFG802.11 operation handler to get station information.
 591  *
 592  * This function only works in connected mode, and dumps the
 593  * requested station information, if available.
 594  */
 595 static int
 596 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 597                              u8 *mac, struct station_info *sinfo)
 598 {
 599         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 600
 601         if (!priv->media_connected)
 602                 return -ENOENT;
 603         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 604                 return -ENOENT;
 605
 606         return mwifiex_dump_station_info(priv, sinfo);
 607 }
 608
 609 /* Supported rates to be advertised to the cfg80211 */
 610
 611 static struct ieee80211_rate mwifiex_rates[] = {
 612         {.bitrate = 10, .hw_value = 2, },
 613         {.bitrate = 20, .hw_value = 4, },
 614         {.bitrate = 55, .hw_value = 11, },
 615         {.bitrate = 110, .hw_value = 22, },
 616         {.bitrate = 220, .hw_value = 44, },
 617         {.bitrate = 60, .hw_value = 12, },
 618         {.bitrate = 90, .hw_value = 18, },
 619         {.bitrate = 120, .hw_value = 24, },
 620         {.bitrate = 180, .hw_value = 36, },
 621         {.bitrate = 240, .hw_value = 48, },
 622         {.bitrate = 360, .hw_value = 72, },
 623         {.bitrate = 480, .hw_value = 96, },
 624         {.bitrate = 540, .hw_value = 108, },
 625         {.bitrate = 720, .hw_value = 144, },
 626 };
 627
 628 /* Channel definitions to be advertised to cfg80211 */
 629
 630 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 631         {.center_freq = 2412, .hw_value = 1, },
 632         {.center_freq = 2417, .hw_value = 2, },
 633         {.center_freq = 2422, .hw_value = 3, },
 634         {.center_freq = 2427, .hw_value = 4, },
 635         {.center_freq = 2432, .hw_value = 5, },
 636         {.center_freq = 2437, .hw_value = 6, },
 637         {.center_freq = 2442, .hw_value = 7, },
 638         {.center_freq = 2447, .hw_value = 8, },
 639         {.center_freq = 2452, .hw_value = 9, },
 640         {.center_freq = 2457, .hw_value = 10, },
 641         {.center_freq = 2462, .hw_value = 11, },
 642         {.center_freq = 2467, .hw_value = 12, },
 643         {.center_freq = 2472, .hw_value = 13, },
 644         {.center_freq = 2484, .hw_value = 14, },
 645 };
 646
 647 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 648         .channels = mwifiex_channels_2ghz,
 649         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 650         .bitrates = mwifiex_rates,
 651         .n_bitrates = 14,
 652 };
 653
 654 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 655         {.center_freq = 5040, .hw_value = 8, },
 656         {.center_freq = 5060, .hw_value = 12, },
 657         {.center_freq = 5080, .hw_value = 16, },
 658         {.center_freq = 5170, .hw_value = 34, },
 659         {.center_freq = 5190, .hw_value = 38, },
 660         {.center_freq = 5210, .hw_value = 42, },
 661         {.center_freq = 5230, .hw_value = 46, },
 662         {.center_freq = 5180, .hw_value = 36, },
 663         {.center_freq = 5200, .hw_value = 40, },
 664         {.center_freq = 5220, .hw_value = 44, },
 665         {.center_freq = 5240, .hw_value = 48, },
 666         {.center_freq = 5260, .hw_value = 52, },
 667         {.center_freq = 5280, .hw_value = 56, },
 668         {.center_freq = 5300, .hw_value = 60, },
 669         {.center_freq = 5320, .hw_value = 64, },
 670         {.center_freq = 5500, .hw_value = 100, },
 671         {.center_freq = 5520, .hw_value = 104, },
 672         {.center_freq = 5540, .hw_value = 108, },
 673         {.center_freq = 5560, .hw_value = 112, },
 674         {.center_freq = 5580, .hw_value = 116, },
 675         {.center_freq = 5600, .hw_value = 120, },
 676         {.center_freq = 5620, .hw_value = 124, },
 677         {.center_freq = 5640, .hw_value = 128, },
 678         {.center_freq = 5660, .hw_value = 132, },
 679         {.center_freq = 5680, .hw_value = 136, },
 680         {.center_freq = 5700, .hw_value = 140, },
 681         {.center_freq = 5745, .hw_value = 149, },
 682         {.center_freq = 5765, .hw_value = 153, },
 683         {.center_freq = 5785, .hw_value = 157, },
 684         {.center_freq = 5805, .hw_value = 161, },
 685         {.center_freq = 5825, .hw_value = 165, },
 686 };
 687
 688 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 689         .channels = mwifiex_channels_5ghz,
 690         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 691         .bitrates = mwifiex_rates - 4,
 692         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 693 };
 694
 695
 696 /* Supported crypto cipher suits to be advertised to cfg80211 */
 697
 698 static const u32 mwifiex_cipher_suites[] = {
 699         WLAN_CIPHER_SUITE_WEP40,
 700         WLAN_CIPHER_SUITE_WEP104,
 701         WLAN_CIPHER_SUITE_TKIP,
 702         WLAN_CIPHER_SUITE_CCMP,
 703 };
 704
 705 /*
 706  * CFG802.11 operation handler for setting bit rates.
 707  *
 708  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 709  * Currently only 2.4GHz band is supported.
 710  */
 711 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 712                                 struct net_device *dev,
 713                                 const u8 *peer,
 714                                 const struct cfg80211_bitrate_mask *mask)
 715 {
 716         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 717         int index = 0, mode = 0, i;
 718         struct mwifiex_adapter *adapter = priv->adapter;
 719
 720         /* Currently only 2.4GHz is supported */
 721         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 722                 /*
 723                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 724                  * and from 6 they are OFDM; 802.11G
 725                  */
 726                 if (mwifiex_rates[i].bitrate == 60) {
 727                         index = 1 << i;
 728                         break;
 729                 }
 730         }
 731
 732         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 733                 mode = BAND_B;
 734         } else {
 735                 mode = BAND_G;
 736                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 737                         mode |=  BAND_B;
 738         }
 739
 740         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 741                 adapter->config_bands = mode;
 742                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 743                         adapter->adhoc_start_band = mode;
 744                         adapter->adhoc_11n_enabled = false;
 745                 }
 746         }
 747         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 748         adapter->channel_type = NL80211_CHAN_NO_HT;
 749
 750         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 751                                 (mode & BAND_B) ? "b" : "",
 752                                 (mode & BAND_G) ? "g" : "");
 753
 754         return 0;
 755 }
 756
 757 /*
 758  * CFG802.11 operation handler for disconnection request.
 759  *
 760  * This function does not work when there is already a disconnection
 761  * procedure going on.
 762  */
 763 static int
 764 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 765                             u16 reason_code)
 766 {
 767         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 768
 769         if (mwifiex_deauthenticate(priv, NULL))
 770                 return -EFAULT;
 771
 772         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 773                 " reason code %d\n", priv->cfg_bssid, reason_code);
 774
 775         memset(priv->cfg_bssid, 0, ETH_ALEN);
 776
 777         return 0;
 778 }
 779
 780 /*
 781  * This function informs the CFG802.11 subsystem of a new IBSS.
 782  *
 783  * The following information are sent to the CFG802.11 subsystem
 784  * to register the new IBSS. If we do not register the new IBSS,
 785  * a kernel panic will result.
 786  *      - SSID
 787  *      - SSID length
 788  *      - BSSID
 789  *      - Channel
 790  */
 791 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 792 {
 793         struct ieee80211_channel *chan;
 794         struct mwifiex_bss_info bss_info;
 795         struct cfg80211_bss *bss;
 796         int ie_len;
 797         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 798         enum ieee80211_band band;
 799
 800         if (mwifiex_get_bss_info(priv, &bss_info))
 801                 return -1;
 802
 803         ie_buf[0] = WLAN_EID_SSID;
 804         ie_buf[1] = bss_info.ssid.ssid_len;
 805
 806         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 807                         &bss_info.ssid.ssid,
 808                         bss_info.ssid.ssid_len);
 809         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 810
 811         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 812         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 813                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 814                                                        band));
 815
 816         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 817                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 818                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 819         cfg80211_put_bss(bss);
 820         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 821
 822         return 0;
 823 }
 824
 825 /*
 826  * This function connects with a BSS.
 827  *
 828  * This function handles both Infra and Ad-Hoc modes. It also performs
 829  * validity checking on the provided parameters, disconnects from the
 830  * current BSS (if any), sets up the association/scan parameters,
 831  * including security settings, and performs specific SSID scan before
 832  * trying to connect.
 833  *
 834  * For Infra mode, the function returns failure if the specified SSID
 835  * is not found in scan table. However, for Ad-Hoc mode, it can create
 836  * the IBSS if it does not exist. On successful completion in either case,
 837  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 838  */
 839 static int
 840 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 841                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 842                        struct cfg80211_connect_params *sme, bool privacy)
 843 {
 844         struct mwifiex_802_11_ssid req_ssid;
 845         int ret, auth_type = 0;
 846         struct cfg80211_bss *bss = NULL;
 847         u8 is_scanning_required = 0;
 848
 849         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 850
 851         req_ssid.ssid_len = ssid_len;
 852         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 853                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 854                 return -EINVAL;
 855         }
 856
 857         memcpy(req_ssid.ssid, ssid, ssid_len);
 858         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 859                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 860                 return -EINVAL;
 861         }
 862
 863         /* disconnect before try to associate */
 864         mwifiex_deauthenticate(priv, NULL);
 865
 866         if (channel)
 867                 ret = mwifiex_set_rf_channel(priv, channel,
 868                                                 priv->adapter->channel_type);
 869
 870         /* As this is new association, clear locally stored
 871          * keys and security related flags */
 872         priv->sec_info.wpa_enabled = false;
 873         priv->sec_info.wpa2_enabled = false;
 874         priv->wep_key_curr_index = 0;
 875         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
 876
 877         if (mode == NL80211_IFTYPE_ADHOC) {
 878                 /* "privacy" is set only for ad-hoc mode */
 879                 if (privacy) {
 880                         /*
 881                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 882                          * the firmware can find a matching network from the
 883                          * scan. The cfg80211 does not give us the encryption
 884                          * mode at this stage so just setting it to WEP here.
 885                          */
 886                         priv->sec_info.encryption_mode =
 887                                         WLAN_CIPHER_SUITE_WEP104;
 888                         priv->sec_info.authentication_mode =
 889                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 890                 }
 891
 892                 goto done;
 893         }
 894
 895         /* Now handle infra mode. "sme" is valid for infra mode only */
 896         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 897                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 898                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 899         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 900                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 901
 902         if (sme->crypto.n_ciphers_pairwise) {
 903                 priv->sec_info.encryption_mode =
 904                                                 sme->crypto.ciphers_pairwise[0];
 905                 priv->sec_info.authentication_mode = auth_type;
 906         }
 907
 908         if (sme->crypto.cipher_group) {
 909                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 910                 priv->sec_info.authentication_mode = auth_type;
 911         }
 912         if (sme->ie)
 913                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 914
 915         if (sme->key) {
 916                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 917                         dev_dbg(priv->adapter->dev,
 918                                 "info: setting wep encryption"
 919                                 " with key len %d\n", sme->key_len);
 920                         priv->wep_key_curr_index = sme->key_idx;
 921                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 922                                                         sme->key_idx, 0);
 923                 }
 924         }
 925 done:
 926         /*
 927          * Scan entries are valid for some time (15 sec). So we can save one
 928          * active scan time if we just try cfg80211_get_bss first. If it fails
 929          * then request scan and cfg80211_get_bss() again for final output.
 930          */
 931         while (1) {
 932                 if (is_scanning_required) {
 933                         /* Do specific SSID scanning */
 934                         if (mwifiex_request_scan(priv, &req_ssid)) {
 935                                 dev_err(priv->adapter->dev, "scan error\n");
 936                                 return -EFAULT;
 937                         }
 938                 }
 939
 940                 /* Find the BSS we want using available scan results */
 941                 if (mode == NL80211_IFTYPE_ADHOC)
 942                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 943                                                bssid, ssid, ssid_len,
 944                                                WLAN_CAPABILITY_IBSS,
 945                                                WLAN_CAPABILITY_IBSS);
 946                 else
 947                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 948                                                bssid, ssid, ssid_len,
 949                                                WLAN_CAPABILITY_ESS,
 950                                                WLAN_CAPABILITY_ESS);
 951
 952                 if (!bss) {
 953                         if (is_scanning_required) {
 954                                 dev_warn(priv->adapter->dev, "assoc: requested "
 955                                          "bss not found in scan results\n");
 956                                 break;
 957                         }
 958                         is_scanning_required = 1;
 959                 } else {
 960                         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
 961                                         (char *) req_ssid.ssid, bss->bssid);
 962                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
 963                         break;
 964                 }
 965         }
 966
 967         if (mwifiex_bss_start(priv, bss, &req_ssid))
 968                 return -EFAULT;
 969
 970         if (mode == NL80211_IFTYPE_ADHOC) {
 971                 /* Inform the BSS information to kernel, otherwise
 972                  * kernel will give a panic after successful assoc */
 973                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
 974                         return -EFAULT;
 975         }
 976
 977         return ret;
 978 }
 979
 980 /*
 981  * CFG802.11 operation handler for association request.
 982  *
 983  * This function does not work when the current mode is set to Ad-Hoc, or
 984  * when there is already an association procedure going on. The given BSS
 985  * information is used to associate.
 986  */
 987 static int
 988 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 989                          struct cfg80211_connect_params *sme)
 990 {
 991         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 992         int ret = 0;
 993
 994         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 995                 wiphy_err(wiphy, "received infra assoc request "
 996                                 "when station is in ibss mode\n");
 997                 goto done;
 998         }
 999
1000         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1001                (char *) sme->ssid, sme->bssid);
1002
1003         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1004                                      priv->bss_mode, sme->channel, sme, 0);
1005 done:
1006         if (!ret) {
1007                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1008                                         NULL, 0, WLAN_STATUS_SUCCESS,
1009                                         GFP_KERNEL);
1010                 dev_dbg(priv->adapter->dev,
1011                         "info: associated to bssid %pM successfully\n",
1012                         priv->cfg_bssid);
1013         } else {
1014                 dev_dbg(priv->adapter->dev,
1015                         "info: association to bssid %pM failed\n",
1016                         priv->cfg_bssid);
1017                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1018         }
1019
1020         return ret;
1021 }
1022
1023 /*
1024  * CFG802.11 operation handler to join an IBSS.
1025  *
1026  * This function does not work in any mode other than Ad-Hoc, or if
1027  * a join operation is already in progress.
1028  */
1029 static int
1030 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1031                            struct cfg80211_ibss_params *params)
1032 {
1033         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1034         int ret = 0;
1035
1036         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1037                 wiphy_err(wiphy, "request to join ibss received "
1038                                 "when station is not in ibss mode\n");
1039                 goto done;
1040         }
1041
1042         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1043                (char *) params->ssid, params->bssid);
1044
1045         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1046                                 params->bssid, priv->bss_mode,
1047                                 params->channel, NULL, params->privacy);
1048 done:
1049         if (!ret) {
1050                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1051                 dev_dbg(priv->adapter->dev,
1052                         "info: joined/created adhoc network with bssid"
1053                         " %pM successfully\n", priv->cfg_bssid);
1054         } else {
1055                 dev_dbg(priv->adapter->dev,
1056                         "info: failed creating/joining adhoc network\n");
1057         }
1058
1059         return ret;
1060 }
1061
1062 /*
1063  * CFG802.11 operation handler to leave an IBSS.
1064  *
1065  * This function does not work if a leave operation is
1066  * already in progress.
1067  */
1068 static int
1069 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1070 {
1071         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1072
1073         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1074                         priv->cfg_bssid);
1075         if (mwifiex_deauthenticate(priv, NULL))
1076                 return -EFAULT;
1077
1078         memset(priv->cfg_bssid, 0, ETH_ALEN);
1079
1080         return 0;
1081 }
1082
1083 /*
1084  * CFG802.11 operation handler for scan request.
1085  *
1086  * This function issues a scan request to the firmware based upon
1087  * the user specified scan configuration. On successfull completion,
1088  * it also informs the results.
1089  */
1090 static int
1091 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1092                       struct cfg80211_scan_request *request)
1093 {
1094         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1095         int i;
1096         struct ieee80211_channel *chan;
1097
1098         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1099
1100         priv->scan_request = request;
1101
1102         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1103                                         GFP_KERNEL);
1104         if (!priv->user_scan_cfg) {
1105                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1106                 return -ENOMEM;
1107         }
1108         for (i = 0; i < request->n_ssids; i++) {
1109                 memcpy(priv->user_scan_cfg->ssid_list[i].ssid,
1110                         request->ssids[i].ssid, request->ssids[i].ssid_len);
1111                 priv->user_scan_cfg->ssid_list[i].max_len =
1112                         request->ssids[i].ssid_len;
1113         }
1114         for (i = 0; i < request->n_channels; i++) {
1115                 chan = request->channels[i];
1116                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1117                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1118
1119                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1120                         priv->user_scan_cfg->chan_list[i].scan_type =
1121                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1122                 else
1123                         priv->user_scan_cfg->chan_list[i].scan_type =
1124                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1125
1126                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1127         }
1128         if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1129                 return -EFAULT;
1130
1131         return 0;
1132 }
1133
1134 /*
1135  * This function sets up the CFG802.11 specific HT capability fields
1136  * with default values.
1137  *
1138  * The following default values are set -
1139  *      - HT Supported = True
1140  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1141  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1142  *      - HT Capabilities supported by firmware
1143  *      - MCS information, Rx mask = 0xff
1144  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1145  */
1146 static void
1147 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1148                       struct mwifiex_private *priv)
1149 {
1150         int rx_mcs_supp;
1151         struct ieee80211_mcs_info mcs_set;
1152         u8 *mcs = (u8 *)&mcs_set;
1153         struct mwifiex_adapter *adapter = priv->adapter;
1154
1155         ht_info->ht_supported = true;
1156         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1157         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1158
1159         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1160
1161         /* Fill HT capability information */
1162         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1163                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1164         else
1165                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1166
1167         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1168                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1169         else
1170                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1171
1172         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1173                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1174         else
1175                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1176
1177         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1178                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1179         else
1180                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1181
1182         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1183                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1184         else
1185                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1186
1187         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1188         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1189
1190         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1191         /* Set MCS for 1x1 */
1192         memset(mcs, 0xff, rx_mcs_supp);
1193         /* Clear all the other values */
1194         memset(&mcs[rx_mcs_supp], 0,
1195                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1196         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1197                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1198                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1199                 SETHT_MCS32(mcs_set.rx_mask);
1200
1201         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1202
1203         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1204 }
1205
1206 /*
1207  *  create a new virtual interface with the given name
1208  */
1209 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1210                                                 char *name,
1211                                                 enum nl80211_iftype type,
1212                                                 u32 *flags,
1213                                                 struct vif_params *params)
1214 {
1215         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1216         struct mwifiex_adapter *adapter;
1217         struct net_device *dev;
1218         void *mdev_priv;
1219
1220         if (!priv)
1221                 return NULL;
1222
1223         adapter = priv->adapter;
1224         if (!adapter)
1225                 return NULL;
1226
1227         switch (type) {
1228         case NL80211_IFTYPE_UNSPECIFIED:
1229         case NL80211_IFTYPE_STATION:
1230         case NL80211_IFTYPE_ADHOC:
1231                 if (priv->bss_mode) {
1232                         wiphy_err(wiphy, "cannot create multiple"
1233                                         " station/adhoc interfaces\n");
1234                         return NULL;
1235                 }
1236
1237                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1238                         priv->bss_mode = NL80211_IFTYPE_STATION;
1239                 else
1240                         priv->bss_mode = type;
1241
1242                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1243                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1244                 priv->bss_priority = 0;
1245                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1246                 priv->bss_num = 0;
1247
1248                 break;
1249         default:
1250                 wiphy_err(wiphy, "type not supported\n");
1251                 return NULL;
1252         }
1253
1254         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1255                               ether_setup, 1);
1256         if (!dev) {
1257                 wiphy_err(wiphy, "no memory available for netdevice\n");
1258                 goto error;
1259         }
1260
1261         dev_net_set(dev, wiphy_net(wiphy));
1262         dev->ieee80211_ptr = priv->wdev;
1263         dev->ieee80211_ptr->iftype = priv->bss_mode;
1264         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1265         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1266         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1267
1268         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1269         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1270         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1271
1272         mdev_priv = netdev_priv(dev);
1273         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1274
1275         priv->netdev = dev;
1276         mwifiex_init_priv_params(priv, dev);
1277
1278         SET_NETDEV_DEV(dev, adapter->dev);
1279
1280         /* Register network device */
1281         if (register_netdevice(dev)) {
1282                 wiphy_err(wiphy, "cannot register virtual network device\n");
1283                 goto error;
1284         }
1285
1286         sema_init(&priv->async_sem, 1);
1287         priv->scan_pending_on_block = false;
1288
1289         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1290
1291 #ifdef CONFIG_DEBUG_FS
1292         mwifiex_dev_debugfs_init(priv);
1293 #endif
1294         return dev;
1295 error:
1296         if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1297                 free_netdev(dev);
1298         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1299
1300         return NULL;
1301 }
1302 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1303
1304 /*
1305  * del_virtual_intf: remove the virtual interface determined by dev
1306  */
1307 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1308 {
1309         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1310
1311 #ifdef CONFIG_DEBUG_FS
1312         mwifiex_dev_debugfs_remove(priv);
1313 #endif
1314
1315         if (!netif_queue_stopped(priv->netdev))
1316                 netif_stop_queue(priv->netdev);
1317
1318         if (netif_carrier_ok(priv->netdev))
1319                 netif_carrier_off(priv->netdev);
1320
1321         if (dev->reg_state == NETREG_REGISTERED)
1322                 unregister_netdevice(dev);
1323
1324         if (dev->reg_state == NETREG_UNREGISTERED)
1325                 free_netdev(dev);
1326
1327         /* Clear the priv in adapter */
1328         priv->netdev = NULL;
1329
1330         priv->media_connected = false;
1331
1332         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1333
1334         return 0;
1335 }
1336 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1337
1338 /* station cfg80211 operations */
1339 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1340         .add_virtual_intf = mwifiex_add_virtual_intf,
1341         .del_virtual_intf = mwifiex_del_virtual_intf,
1342         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1343         .scan = mwifiex_cfg80211_scan,
1344         .connect = mwifiex_cfg80211_connect,
1345         .disconnect = mwifiex_cfg80211_disconnect,
1346         .get_station = mwifiex_cfg80211_get_station,
1347         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1348         .set_channel = mwifiex_cfg80211_set_channel,
1349         .join_ibss = mwifiex_cfg80211_join_ibss,
1350         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1351         .add_key = mwifiex_cfg80211_add_key,
1352         .del_key = mwifiex_cfg80211_del_key,
1353         .set_default_key = mwifiex_cfg80211_set_default_key,
1354         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1355         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1356         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1357 };
1358
1359 /*
1360  * This function registers the device with CFG802.11 subsystem.
1361  *
1362  * The function creates the wireless device/wiphy, populates it with
1363  * default parameters and handler function pointers, and finally
1364  * registers the device.
1365  */
1366 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1367 {
1368         int ret;
1369         void *wdev_priv;
1370         struct wireless_dev *wdev;
1371
1372         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1373         if (!wdev) {
1374                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1375                                                 __func__);
1376                 return -ENOMEM;
1377         }
1378         wdev->wiphy =
1379                 wiphy_new(&mwifiex_cfg80211_ops,
1380                           sizeof(struct mwifiex_private *));
1381         if (!wdev->wiphy) {
1382                 kfree(wdev);
1383                 return -ENOMEM;
1384         }
1385         wdev->iftype = NL80211_IFTYPE_STATION;
1386         wdev->wiphy->max_scan_ssids = 10;
1387         wdev->wiphy->interface_modes =
1388                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1389
1390         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1391         mwifiex_setup_ht_caps(
1392                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1393
1394         if (priv->adapter->config_bands & BAND_A) {
1395                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1396                 mwifiex_setup_ht_caps(
1397                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1398         } else {
1399                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1400         }
1401
1402         /* Initialize cipher suits */
1403         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1404         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1405
1406         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1407         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1408
1409         /* Reserve space for bss band information */
1410         wdev->wiphy->bss_priv_size = sizeof(u8);
1411
1412         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1413
1414         /* Set struct mwifiex_private pointer in wiphy_priv */
1415         wdev_priv = wiphy_priv(wdev->wiphy);
1416
1417         *(unsigned long *) wdev_priv = (unsigned long) priv;
1418
1419         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1420
1421         ret = wiphy_register(wdev->wiphy);
1422         if (ret < 0) {
1423                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1424                                                 __func__);
1425                 wiphy_free(wdev->wiphy);
1426                 kfree(wdev);
1427                 return ret;
1428         } else {
1429                 dev_dbg(priv->adapter->dev,
1430                                 "info: successfully registered wiphy device\n");
1431         }
1432
1433         priv->wdev = wdev;
1434
1435         return ret;
1436 }