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_cfg80211_get_priv(wiphy);
  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_cfg80211_get_priv(wiphy);
 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_cfg80211_get_priv(wiphy);
 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_cfg80211_get_priv(wiphy);
 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 = mwifiex_cfg80211_get_priv(wiphy);
 380
 381         if (priv->media_connected) {
 382                 wiphy_err(wiphy, "This setting is valid only when station "
 383                                 "is not connected\n");
 384                 return -EINVAL;
 385         }
 386
 387         return mwifiex_set_rf_channel(priv, chan, channel_type);
 388 }
 389
 390 /*
 391  * This function sets the fragmentation threshold.
 392  *
 393  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 394  * and MWIFIEX_FRAG_MAX_VALUE.
 395  */
 396 static int
 397 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 398 {
 399         int ret;
 400
 401         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 402             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 403                 return -EINVAL;
 404
 405         /* Send request to firmware */
 406         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 407                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 408                                     &frag_thr);
 409
 410         return ret;
 411 }
 412
 413 /*
 414  * This function sets the RTS threshold.
 415
 416  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 417  * and MWIFIEX_RTS_MAX_VALUE.
 418  */
 419 static int
 420 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 421 {
 422         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 423                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 424
 425         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 426                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 427                                     &rts_thr);
 428 }
 429
 430 /*
 431  * CFG802.11 operation handler to set wiphy parameters.
 432  *
 433  * This function can be used to set the RTS threshold and the
 434  * Fragmentation threshold of the driver.
 435  */
 436 static int
 437 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 438 {
 439         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 440         int ret = 0;
 441
 442         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 443                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 444                 if (ret)
 445                         return ret;
 446         }
 447
 448         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 449                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 450
 451         return ret;
 452 }
 453
 454 /*
 455  * CFG802.11 operation handler to change interface type.
 456  */
 457 static int
 458 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 459                                      struct net_device *dev,
 460                                      enum nl80211_iftype type, u32 *flags,
 461                                      struct vif_params *params)
 462 {
 463         int ret;
 464         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 465
 466         if (priv->bss_mode == type) {
 467                 wiphy_warn(wiphy, "already set to required type\n");
 468                 return 0;
 469         }
 470
 471         priv->bss_mode = type;
 472
 473         switch (type) {
 474         case NL80211_IFTYPE_ADHOC:
 475                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 476                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 477                 break;
 478         case NL80211_IFTYPE_STATION:
 479                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 480                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 481                 break;
 482         case NL80211_IFTYPE_UNSPECIFIED:
 483                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 484                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 485                 return 0;
 486         default:
 487                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 488                 return -EINVAL;
 489         }
 490
 491         mwifiex_deauthenticate(priv, NULL);
 492
 493         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 494
 495         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 496                                     HostCmd_ACT_GEN_SET, 0, NULL);
 497
 498         return ret;
 499 }
 500
 501 /*
 502  * This function dumps the station information on a buffer.
 503  *
 504  * The following information are shown -
 505  *      - Total bytes transmitted
 506  *      - Total bytes received
 507  *      - Total packets transmitted
 508  *      - Total packets received
 509  *      - Signal quality level
 510  *      - Transmission rate
 511  */
 512 static int
 513 mwifiex_dump_station_info(struct mwifiex_private *priv,
 514                           struct station_info *sinfo)
 515 {
 516         struct mwifiex_ds_get_signal signal;
 517         struct mwifiex_rate_cfg rate;
 518         int ret = 0;
 519
 520         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 521                 STATION_INFO_RX_PACKETS |
 522                 STATION_INFO_TX_PACKETS
 523                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 524
 525         /* Get signal information from the firmware */
 526         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 527         if (mwifiex_get_signal_info(priv, &signal)) {
 528                 dev_err(priv->adapter->dev, "getting signal information\n");
 529                 ret = -EFAULT;
 530         }
 531
 532         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 533                 dev_err(priv->adapter->dev, "getting data rate\n");
 534                 ret = -EFAULT;
 535         }
 536
 537         /*
 538          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 539          * MCS index values for us are 0 to 7.
 540          */
 541         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
 542                 sinfo->txrate.mcs = priv->tx_rate;
 543                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 544                 /* 40MHz rate */
 545                 if (priv->tx_htinfo & BIT(1))
 546                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 547                 /* SGI enabled */
 548                 if (priv->tx_htinfo & BIT(2))
 549                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 550         }
 551
 552         sinfo->rx_bytes = priv->stats.rx_bytes;
 553         sinfo->tx_bytes = priv->stats.tx_bytes;
 554         sinfo->rx_packets = priv->stats.rx_packets;
 555         sinfo->tx_packets = priv->stats.tx_packets;
 556         sinfo->signal = priv->qual_level;
 557         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 558         sinfo->txrate.legacy = rate.rate * 5;
 559
 560         return ret;
 561 }
 562
 563 /*
 564  * CFG802.11 operation handler to get station information.
 565  *
 566  * This function only works in connected mode, and dumps the
 567  * requested station information, if available.
 568  */
 569 static int
 570 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 571                              u8 *mac, struct station_info *sinfo)
 572 {
 573         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 574
 575         if (!priv->media_connected)
 576                 return -ENOENT;
 577         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 578                 return -ENOENT;
 579
 580         return mwifiex_dump_station_info(priv, sinfo);
 581 }
 582
 583 /* Supported rates to be advertised to the cfg80211 */
 584
 585 static struct ieee80211_rate mwifiex_rates[] = {
 586         {.bitrate = 10, .hw_value = 2, },
 587         {.bitrate = 20, .hw_value = 4, },
 588         {.bitrate = 55, .hw_value = 11, },
 589         {.bitrate = 110, .hw_value = 22, },
 590         {.bitrate = 220, .hw_value = 44, },
 591         {.bitrate = 60, .hw_value = 12, },
 592         {.bitrate = 90, .hw_value = 18, },
 593         {.bitrate = 120, .hw_value = 24, },
 594         {.bitrate = 180, .hw_value = 36, },
 595         {.bitrate = 240, .hw_value = 48, },
 596         {.bitrate = 360, .hw_value = 72, },
 597         {.bitrate = 480, .hw_value = 96, },
 598         {.bitrate = 540, .hw_value = 108, },
 599         {.bitrate = 720, .hw_value = 144, },
 600 };
 601
 602 /* Channel definitions to be advertised to cfg80211 */
 603
 604 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 605         {.center_freq = 2412, .hw_value = 1, },
 606         {.center_freq = 2417, .hw_value = 2, },
 607         {.center_freq = 2422, .hw_value = 3, },
 608         {.center_freq = 2427, .hw_value = 4, },
 609         {.center_freq = 2432, .hw_value = 5, },
 610         {.center_freq = 2437, .hw_value = 6, },
 611         {.center_freq = 2442, .hw_value = 7, },
 612         {.center_freq = 2447, .hw_value = 8, },
 613         {.center_freq = 2452, .hw_value = 9, },
 614         {.center_freq = 2457, .hw_value = 10, },
 615         {.center_freq = 2462, .hw_value = 11, },
 616         {.center_freq = 2467, .hw_value = 12, },
 617         {.center_freq = 2472, .hw_value = 13, },
 618         {.center_freq = 2484, .hw_value = 14, },
 619 };
 620
 621 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 622         .channels = mwifiex_channels_2ghz,
 623         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 624         .bitrates = mwifiex_rates,
 625         .n_bitrates = 14,
 626 };
 627
 628 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 629         {.center_freq = 5040, .hw_value = 8, },
 630         {.center_freq = 5060, .hw_value = 12, },
 631         {.center_freq = 5080, .hw_value = 16, },
 632         {.center_freq = 5170, .hw_value = 34, },
 633         {.center_freq = 5190, .hw_value = 38, },
 634         {.center_freq = 5210, .hw_value = 42, },
 635         {.center_freq = 5230, .hw_value = 46, },
 636         {.center_freq = 5180, .hw_value = 36, },
 637         {.center_freq = 5200, .hw_value = 40, },
 638         {.center_freq = 5220, .hw_value = 44, },
 639         {.center_freq = 5240, .hw_value = 48, },
 640         {.center_freq = 5260, .hw_value = 52, },
 641         {.center_freq = 5280, .hw_value = 56, },
 642         {.center_freq = 5300, .hw_value = 60, },
 643         {.center_freq = 5320, .hw_value = 64, },
 644         {.center_freq = 5500, .hw_value = 100, },
 645         {.center_freq = 5520, .hw_value = 104, },
 646         {.center_freq = 5540, .hw_value = 108, },
 647         {.center_freq = 5560, .hw_value = 112, },
 648         {.center_freq = 5580, .hw_value = 116, },
 649         {.center_freq = 5600, .hw_value = 120, },
 650         {.center_freq = 5620, .hw_value = 124, },
 651         {.center_freq = 5640, .hw_value = 128, },
 652         {.center_freq = 5660, .hw_value = 132, },
 653         {.center_freq = 5680, .hw_value = 136, },
 654         {.center_freq = 5700, .hw_value = 140, },
 655         {.center_freq = 5745, .hw_value = 149, },
 656         {.center_freq = 5765, .hw_value = 153, },
 657         {.center_freq = 5785, .hw_value = 157, },
 658         {.center_freq = 5805, .hw_value = 161, },
 659         {.center_freq = 5825, .hw_value = 165, },
 660 };
 661
 662 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 663         .channels = mwifiex_channels_5ghz,
 664         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 665         .bitrates = mwifiex_rates - 4,
 666         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 667 };
 668
 669
 670 /* Supported crypto cipher suits to be advertised to cfg80211 */
 671
 672 static const u32 mwifiex_cipher_suites[] = {
 673         WLAN_CIPHER_SUITE_WEP40,
 674         WLAN_CIPHER_SUITE_WEP104,
 675         WLAN_CIPHER_SUITE_TKIP,
 676         WLAN_CIPHER_SUITE_CCMP,
 677 };
 678
 679 /*
 680  * CFG802.11 operation handler for setting bit rates.
 681  *
 682  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 683  * Currently only 2.4GHz band is supported.
 684  */
 685 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 686                                 struct net_device *dev,
 687                                 const u8 *peer,
 688                                 const struct cfg80211_bitrate_mask *mask)
 689 {
 690         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 691         int index = 0, mode = 0, i;
 692         struct mwifiex_adapter *adapter = priv->adapter;
 693
 694         /* Currently only 2.4GHz is supported */
 695         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 696                 /*
 697                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 698                  * and from 6 they are OFDM; 802.11G
 699                  */
 700                 if (mwifiex_rates[i].bitrate == 60) {
 701                         index = 1 << i;
 702                         break;
 703                 }
 704         }
 705
 706         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 707                 mode = BAND_B;
 708         } else {
 709                 mode = BAND_G;
 710                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 711                         mode |=  BAND_B;
 712         }
 713
 714         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 715                 adapter->config_bands = mode;
 716                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 717                         adapter->adhoc_start_band = mode;
 718                         adapter->adhoc_11n_enabled = false;
 719                 }
 720         }
 721         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 722         adapter->channel_type = NL80211_CHAN_NO_HT;
 723
 724         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 725                                 (mode & BAND_B) ? "b" : "",
 726                                 (mode & BAND_G) ? "g" : "");
 727
 728         return 0;
 729 }
 730
 731 /*
 732  * CFG802.11 operation handler for disconnection request.
 733  *
 734  * This function does not work when there is already a disconnection
 735  * procedure going on.
 736  */
 737 static int
 738 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 739                             u16 reason_code)
 740 {
 741         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 742
 743         if (mwifiex_deauthenticate(priv, NULL))
 744                 return -EFAULT;
 745
 746         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 747                 " reason code %d\n", priv->cfg_bssid, reason_code);
 748
 749         memset(priv->cfg_bssid, 0, ETH_ALEN);
 750
 751         return 0;
 752 }
 753
 754 /*
 755  * This function informs the CFG802.11 subsystem of a new IBSS.
 756  *
 757  * The following information are sent to the CFG802.11 subsystem
 758  * to register the new IBSS. If we do not register the new IBSS,
 759  * a kernel panic will result.
 760  *      - SSID
 761  *      - SSID length
 762  *      - BSSID
 763  *      - Channel
 764  */
 765 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 766 {
 767         struct ieee80211_channel *chan;
 768         struct mwifiex_bss_info bss_info;
 769         struct cfg80211_bss *bss;
 770         int ie_len;
 771         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 772         enum ieee80211_band band;
 773
 774         if (mwifiex_get_bss_info(priv, &bss_info))
 775                 return -1;
 776
 777         ie_buf[0] = WLAN_EID_SSID;
 778         ie_buf[1] = bss_info.ssid.ssid_len;
 779
 780         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 781                         &bss_info.ssid.ssid,
 782                         bss_info.ssid.ssid_len);
 783         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 784
 785         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 786         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 787                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 788                                                        band));
 789
 790         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 791                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 792                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 793         cfg80211_put_bss(bss);
 794         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 795
 796         return 0;
 797 }
 798
 799 /*
 800  * This function connects with a BSS.
 801  *
 802  * This function handles both Infra and Ad-Hoc modes. It also performs
 803  * validity checking on the provided parameters, disconnects from the
 804  * current BSS (if any), sets up the association/scan parameters,
 805  * including security settings, and performs specific SSID scan before
 806  * trying to connect.
 807  *
 808  * For Infra mode, the function returns failure if the specified SSID
 809  * is not found in scan table. However, for Ad-Hoc mode, it can create
 810  * the IBSS if it does not exist. On successful completion in either case,
 811  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 812  */
 813 static int
 814 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 815                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 816                        struct cfg80211_connect_params *sme, bool privacy)
 817 {
 818         struct mwifiex_802_11_ssid req_ssid;
 819         int ret, auth_type = 0;
 820         struct cfg80211_bss *bss = NULL;
 821         u8 is_scanning_required = 0;
 822
 823         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 824
 825         req_ssid.ssid_len = ssid_len;
 826         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 827                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 828                 return -EINVAL;
 829         }
 830
 831         memcpy(req_ssid.ssid, ssid, ssid_len);
 832         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 833                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 834                 return -EINVAL;
 835         }
 836
 837         /* disconnect before try to associate */
 838         mwifiex_deauthenticate(priv, NULL);
 839
 840         if (channel)
 841                 ret = mwifiex_set_rf_channel(priv, channel,
 842                                                 priv->adapter->channel_type);
 843
 844         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 845
 846         if (mode == NL80211_IFTYPE_ADHOC) {
 847                 /* "privacy" is set only for ad-hoc mode */
 848                 if (privacy) {
 849                         /*
 850                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 851                          * the firmware can find a matching network from the
 852                          * scan. The cfg80211 does not give us the encryption
 853                          * mode at this stage so just setting it to WEP here.
 854                          */
 855                         priv->sec_info.encryption_mode =
 856                                         WLAN_CIPHER_SUITE_WEP104;
 857                         priv->sec_info.authentication_mode =
 858                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 859                 }
 860
 861                 goto done;
 862         }
 863
 864         /* Now handle infra mode. "sme" is valid for infra mode only */
 865         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 866                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 867                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 868         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 869                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 870
 871         if (sme->crypto.n_ciphers_pairwise) {
 872                 priv->sec_info.encryption_mode =
 873                                                 sme->crypto.ciphers_pairwise[0];
 874                 priv->sec_info.authentication_mode = auth_type;
 875         }
 876
 877         if (sme->crypto.cipher_group) {
 878                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 879                 priv->sec_info.authentication_mode = auth_type;
 880         }
 881         if (sme->ie)
 882                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 883
 884         if (sme->key) {
 885                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 886                         dev_dbg(priv->adapter->dev,
 887                                 "info: setting wep encryption"
 888                                 " with key len %d\n", sme->key_len);
 889                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 890                                                         sme->key_idx, 0);
 891                 }
 892         }
 893 done:
 894         /* Do specific SSID scanning */
 895         if (mwifiex_request_scan(priv, &req_ssid)) {
 896                 dev_err(priv->adapter->dev, "scan error\n");
 897                 return -EFAULT;
 898         }
 899
 900         /*
 901          * Scan entries are valid for some time (15 sec). So we can save one
 902          * active scan time if we just try cfg80211_get_bss first. If it fails
 903          * then request scan and cfg80211_get_bss() again for final output.
 904          */
 905         while (1) {
 906                 if (is_scanning_required) {
 907                         /* Do specific SSID scanning */
 908                         if (mwifiex_request_scan(priv, &req_ssid)) {
 909                                 dev_err(priv->adapter->dev, "scan error\n");
 910                                 return -EFAULT;
 911                         }
 912                 }
 913
 914                 /* Find the BSS we want using available scan results */
 915                 if (mode == NL80211_IFTYPE_ADHOC)
 916                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 917                                                bssid, ssid, ssid_len,
 918                                                WLAN_CAPABILITY_IBSS,
 919                                                WLAN_CAPABILITY_IBSS);
 920                 else
 921                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 922                                                bssid, ssid, ssid_len,
 923                                                WLAN_CAPABILITY_ESS,
 924                                                WLAN_CAPABILITY_ESS);
 925
 926                 if (!bss) {
 927                         if (is_scanning_required) {
 928                                 dev_warn(priv->adapter->dev, "assoc: requested "
 929                                          "bss not found in scan results\n");
 930                                 break;
 931                         }
 932                         is_scanning_required = 1;
 933                 } else {
 934                         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
 935                                         (char *) req_ssid.ssid, bss->bssid);
 936                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
 937                         break;
 938                 }
 939         }
 940
 941         if (mwifiex_bss_start(priv, bss, &req_ssid))
 942                 return -EFAULT;
 943
 944         if (mode == NL80211_IFTYPE_ADHOC) {
 945                 /* Inform the BSS information to kernel, otherwise
 946                  * kernel will give a panic after successful assoc */
 947                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
 948                         return -EFAULT;
 949         }
 950
 951         return ret;
 952 }
 953
 954 /*
 955  * CFG802.11 operation handler for association request.
 956  *
 957  * This function does not work when the current mode is set to Ad-Hoc, or
 958  * when there is already an association procedure going on. The given BSS
 959  * information is used to associate.
 960  */
 961 static int
 962 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 963                          struct cfg80211_connect_params *sme)
 964 {
 965         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 966         int ret = 0;
 967
 968         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 969                 wiphy_err(wiphy, "received infra assoc request "
 970                                 "when station is in ibss mode\n");
 971                 goto done;
 972         }
 973
 974         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
 975                (char *) sme->ssid, sme->bssid);
 976
 977         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
 978                                      priv->bss_mode, sme->channel, sme, 0);
 979 done:
 980         if (!ret) {
 981                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
 982                                         NULL, 0, WLAN_STATUS_SUCCESS,
 983                                         GFP_KERNEL);
 984                 dev_dbg(priv->adapter->dev,
 985                         "info: associated to bssid %pM successfully\n",
 986                         priv->cfg_bssid);
 987         } else {
 988                 dev_dbg(priv->adapter->dev,
 989                         "info: association to bssid %pM failed\n",
 990                         priv->cfg_bssid);
 991                 memset(priv->cfg_bssid, 0, ETH_ALEN);
 992         }
 993
 994         return ret;
 995 }
 996
 997 /*
 998  * CFG802.11 operation handler to join an IBSS.
 999  *
1000  * This function does not work in any mode other than Ad-Hoc, or if
1001  * a join operation is already in progress.
1002  */
1003 static int
1004 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1005                            struct cfg80211_ibss_params *params)
1006 {
1007         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1008         int ret = 0;
1009
1010         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1011                 wiphy_err(wiphy, "request to join ibss received "
1012                                 "when station is not in ibss mode\n");
1013                 goto done;
1014         }
1015
1016         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1017                (char *) params->ssid, params->bssid);
1018
1019         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1020                                 params->bssid, priv->bss_mode,
1021                                 params->channel, NULL, params->privacy);
1022 done:
1023         if (!ret) {
1024                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1025                 dev_dbg(priv->adapter->dev,
1026                         "info: joined/created adhoc network with bssid"
1027                         " %pM successfully\n", priv->cfg_bssid);
1028         } else {
1029                 dev_dbg(priv->adapter->dev,
1030                         "info: failed creating/joining adhoc network\n");
1031         }
1032
1033         return ret;
1034 }
1035
1036 /*
1037  * CFG802.11 operation handler to leave an IBSS.
1038  *
1039  * This function does not work if a leave operation is
1040  * already in progress.
1041  */
1042 static int
1043 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1044 {
1045         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1046
1047         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1048                         priv->cfg_bssid);
1049         if (mwifiex_deauthenticate(priv, NULL))
1050                 return -EFAULT;
1051
1052         memset(priv->cfg_bssid, 0, ETH_ALEN);
1053
1054         return 0;
1055 }
1056
1057 /*
1058  * CFG802.11 operation handler for scan request.
1059  *
1060  * This function issues a scan request to the firmware based upon
1061  * the user specified scan configuration. On successfull completion,
1062  * it also informs the results.
1063  */
1064 static int
1065 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1066                       struct cfg80211_scan_request *request)
1067 {
1068         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1069         int i;
1070         struct ieee80211_channel *chan;
1071
1072         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1073
1074         priv->scan_request = request;
1075
1076         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1077                                         GFP_KERNEL);
1078         if (!priv->user_scan_cfg) {
1079                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1080                 return -ENOMEM;
1081         }
1082         for (i = 0; i < request->n_ssids; i++) {
1083                 memcpy(priv->user_scan_cfg->ssid_list[i].ssid,
1084                         request->ssids[i].ssid, request->ssids[i].ssid_len);
1085                 priv->user_scan_cfg->ssid_list[i].max_len =
1086                         request->ssids[i].ssid_len;
1087         }
1088         for (i = 0; i < request->n_channels; i++) {
1089                 chan = request->channels[i];
1090                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1091                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1092
1093                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1094                         priv->user_scan_cfg->chan_list[i].scan_type =
1095                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1096                 else
1097                         priv->user_scan_cfg->chan_list[i].scan_type =
1098                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1099
1100                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1101         }
1102         if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1103                 return -EFAULT;
1104
1105         return 0;
1106 }
1107
1108 /*
1109  * This function sets up the CFG802.11 specific HT capability fields
1110  * with default values.
1111  *
1112  * The following default values are set -
1113  *      - HT Supported = True
1114  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1115  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1116  *      - HT Capabilities supported by firmware
1117  *      - MCS information, Rx mask = 0xff
1118  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1119  */
1120 static void
1121 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1122                       struct mwifiex_private *priv)
1123 {
1124         int rx_mcs_supp;
1125         struct ieee80211_mcs_info mcs_set;
1126         u8 *mcs = (u8 *)&mcs_set;
1127         struct mwifiex_adapter *adapter = priv->adapter;
1128
1129         ht_info->ht_supported = true;
1130         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1131         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1132
1133         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1134
1135         /* Fill HT capability information */
1136         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1137                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1138         else
1139                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1140
1141         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1142                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1143         else
1144                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1145
1146         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1147                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1148         else
1149                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1150
1151         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1152                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1153         else
1154                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1155
1156         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1157                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1158         else
1159                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1160
1161         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1162         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1163
1164         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1165         /* Set MCS for 1x1 */
1166         memset(mcs, 0xff, rx_mcs_supp);
1167         /* Clear all the other values */
1168         memset(&mcs[rx_mcs_supp], 0,
1169                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1170         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1171                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1172                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1173                 SETHT_MCS32(mcs_set.rx_mask);
1174
1175         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1176
1177         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1178 }
1179
1180 /*
1181  *  create a new virtual interface with the given name
1182  */
1183 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1184                                                 char *name,
1185                                                 enum nl80211_iftype type,
1186                                                 u32 *flags,
1187                                                 struct vif_params *params)
1188 {
1189         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1190         struct mwifiex_adapter *adapter;
1191         struct net_device *dev;
1192         void *mdev_priv;
1193
1194         if (!priv)
1195                 return NULL;
1196
1197         adapter = priv->adapter;
1198         if (!adapter)
1199                 return NULL;
1200
1201         switch (type) {
1202         case NL80211_IFTYPE_UNSPECIFIED:
1203         case NL80211_IFTYPE_STATION:
1204         case NL80211_IFTYPE_ADHOC:
1205                 if (priv->bss_mode) {
1206                         wiphy_err(wiphy, "cannot create multiple"
1207                                         " station/adhoc interfaces\n");
1208                         return NULL;
1209                 }
1210
1211                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1212                         priv->bss_mode = NL80211_IFTYPE_STATION;
1213                 else
1214                         priv->bss_mode = type;
1215
1216                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1217                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1218                 priv->bss_priority = 0;
1219                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1220                 priv->bss_index = 0;
1221                 priv->bss_num = 0;
1222
1223                 break;
1224         default:
1225                 wiphy_err(wiphy, "type not supported\n");
1226                 return NULL;
1227         }
1228
1229         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1230                               ether_setup, 1);
1231         if (!dev) {
1232                 wiphy_err(wiphy, "no memory available for netdevice\n");
1233                 goto error;
1234         }
1235
1236         dev_net_set(dev, wiphy_net(wiphy));
1237         dev->ieee80211_ptr = priv->wdev;
1238         dev->ieee80211_ptr->iftype = priv->bss_mode;
1239         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1240         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1241         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1242
1243         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1244         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1245         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1246
1247         mdev_priv = netdev_priv(dev);
1248         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1249
1250         priv->netdev = dev;
1251         mwifiex_init_priv_params(priv, dev);
1252
1253         SET_NETDEV_DEV(dev, adapter->dev);
1254
1255         /* Register network device */
1256         if (register_netdevice(dev)) {
1257                 wiphy_err(wiphy, "cannot register virtual network device\n");
1258                 goto error;
1259         }
1260
1261         sema_init(&priv->async_sem, 1);
1262         priv->scan_pending_on_block = false;
1263
1264         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1265
1266 #ifdef CONFIG_DEBUG_FS
1267         mwifiex_dev_debugfs_init(priv);
1268 #endif
1269         return dev;
1270 error:
1271         if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1272                 free_netdev(dev);
1273         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1274
1275         return NULL;
1276 }
1277 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1278
1279 /*
1280  * del_virtual_intf: remove the virtual interface determined by dev
1281  */
1282 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1283 {
1284         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1285
1286         if (!priv || !dev)
1287                 return 0;
1288
1289 #ifdef CONFIG_DEBUG_FS
1290         mwifiex_dev_debugfs_remove(priv);
1291 #endif
1292
1293         if (!netif_queue_stopped(priv->netdev))
1294                 netif_stop_queue(priv->netdev);
1295
1296         if (netif_carrier_ok(priv->netdev))
1297                 netif_carrier_off(priv->netdev);
1298
1299         if (dev->reg_state == NETREG_REGISTERED)
1300                 unregister_netdevice(dev);
1301
1302         if (dev->reg_state == NETREG_UNREGISTERED)
1303                 free_netdev(dev);
1304
1305         /* Clear the priv in adapter */
1306         priv->netdev = NULL;
1307
1308         priv->media_connected = false;
1309
1310         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1311
1312         return 0;
1313 }
1314 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1315
1316 /* station cfg80211 operations */
1317 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1318         .add_virtual_intf = mwifiex_add_virtual_intf,
1319         .del_virtual_intf = mwifiex_del_virtual_intf,
1320         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1321         .scan = mwifiex_cfg80211_scan,
1322         .connect = mwifiex_cfg80211_connect,
1323         .disconnect = mwifiex_cfg80211_disconnect,
1324         .get_station = mwifiex_cfg80211_get_station,
1325         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1326         .set_channel = mwifiex_cfg80211_set_channel,
1327         .join_ibss = mwifiex_cfg80211_join_ibss,
1328         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1329         .add_key = mwifiex_cfg80211_add_key,
1330         .del_key = mwifiex_cfg80211_del_key,
1331         .set_default_key = mwifiex_cfg80211_set_default_key,
1332         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1333         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1334         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1335 };
1336
1337 /*
1338  * This function registers the device with CFG802.11 subsystem.
1339  *
1340  * The function creates the wireless device/wiphy, populates it with
1341  * default parameters and handler function pointers, and finally
1342  * registers the device.
1343  */
1344 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1345 {
1346         int ret;
1347         void *wdev_priv;
1348         struct wireless_dev *wdev;
1349
1350         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1351         if (!wdev) {
1352                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1353                                                 __func__);
1354                 return -ENOMEM;
1355         }
1356         wdev->wiphy =
1357                 wiphy_new(&mwifiex_cfg80211_ops,
1358                           sizeof(struct mwifiex_private *));
1359         if (!wdev->wiphy) {
1360                 kfree(wdev);
1361                 return -ENOMEM;
1362         }
1363         wdev->iftype = NL80211_IFTYPE_STATION;
1364         wdev->wiphy->max_scan_ssids = 10;
1365         wdev->wiphy->interface_modes =
1366                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1367
1368         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1369         mwifiex_setup_ht_caps(
1370                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1371
1372         if (priv->adapter->config_bands & BAND_A) {
1373                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1374                 mwifiex_setup_ht_caps(
1375                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1376         } else {
1377                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1378         }
1379
1380         /* Initialize cipher suits */
1381         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1382         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1383
1384         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1385         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1386
1387         /* Reserve space for bss band information */
1388         wdev->wiphy->bss_priv_size = sizeof(u8);
1389
1390         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1391
1392         /* Set struct mwifiex_private pointer in wiphy_priv */
1393         wdev_priv = wiphy_priv(wdev->wiphy);
1394
1395         *(unsigned long *) wdev_priv = (unsigned long) priv;
1396
1397         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1398
1399         ret = wiphy_register(wdev->wiphy);
1400         if (ret < 0) {
1401                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1402                                                 __func__);
1403                 wiphy_free(wdev->wiphy);
1404                 kfree(wdev);
1405                 return ret;
1406         } else {
1407                 dev_dbg(priv->adapter->dev,
1408                                 "info: successfully registered wiphy device\n");
1409         }
1410
1411         priv->wdev = wdev;
1412
1413         return ret;
1414 }