drivers/net/wireless/mwifiex/cfg80211.c

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