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 maps the driver channel type into nl802.11 channel type.
  52  *
  53  * The mapping is as follows -
  54  *      IEEE80211_HT_PARAM_CHA_SEC_NONE    -> NL80211_CHAN_HT20
  55  *      IEEE80211_HT_PARAM_CHA_SEC_ABOVE   -> NL80211_CHAN_HT40PLUS
  56  *      IEEE80211_HT_PARAM_CHA_SEC_BELOW   -> NL80211_CHAN_HT40MINUS
  57  *      Others                             -> NL80211_CHAN_HT20
  58  */
  59 static enum nl80211_channel_type
  60 mwifiex_channels_to_cfg80211_channel_type(int channel_type)
  61 {
  62         switch (channel_type) {
  63         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
  64                 return NL80211_CHAN_HT20;
  65         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
  66                 return NL80211_CHAN_HT40PLUS;
  67         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
  68                 return NL80211_CHAN_HT40MINUS;
  69         default:
  70                 return NL80211_CHAN_HT20;
  71         }
  72 }
  73
  74 /*
  75  * This function checks whether WEP is set.
  76  */
  77 static int
  78 mwifiex_is_alg_wep(u32 cipher)
  79 {
  80         switch (cipher) {
  81         case WLAN_CIPHER_SUITE_WEP40:
  82         case WLAN_CIPHER_SUITE_WEP104:
  83                 return 1;
  84         default:
  85                 break;
  86         }
  87
  88         return 0;
  89 }
  90
  91 /*
  92  * This function retrieves the private structure from kernel wiphy structure.
  93  */
  94 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
  95 {
  96         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
  97 }
  98
  99 /*
 100  * CFG802.11 operation handler to delete a network key.
 101  */
 102 static int
 103 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 104                          u8 key_index, bool pairwise, const u8 *mac_addr)
 105 {
 106         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 107
 108         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
 109                 wiphy_err(wiphy, "deleting the crypto keys\n");
 110                 return -EFAULT;
 111         }
 112
 113         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 114         return 0;
 115 }
 116
 117 /*
 118  * CFG802.11 operation handler to set Tx power.
 119  */
 120 static int
 121 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 122                               enum nl80211_tx_power_setting type,
 123                               int mbm)
 124 {
 125         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 126         struct mwifiex_power_cfg power_cfg;
 127         int dbm = MBM_TO_DBM(mbm);
 128
 129         if (type == NL80211_TX_POWER_FIXED) {
 130                 power_cfg.is_power_auto = 0;
 131                 power_cfg.power_level = dbm;
 132         } else {
 133                 power_cfg.is_power_auto = 1;
 134         }
 135
 136         return mwifiex_set_tx_power(priv, &power_cfg);
 137 }
 138
 139 /*
 140  * CFG802.11 operation handler to set Power Save option.
 141  *
 142  * The timeout value, if provided, is currently ignored.
 143  */
 144 static int
 145 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 146                                 struct net_device *dev,
 147                                 bool enabled, int timeout)
 148 {
 149         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 150         u32 ps_mode;
 151
 152         if (timeout)
 153                 wiphy_dbg(wiphy,
 154                         "info: ignoring the timeout value"
 155                         " for IEEE power save\n");
 156
 157         ps_mode = enabled;
 158
 159         return mwifiex_drv_set_power(priv, &ps_mode);
 160 }
 161
 162 /*
 163  * CFG802.11 operation handler to set the default network key.
 164  */
 165 static int
 166 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 167                                  u8 key_index, bool unicast,
 168                                  bool multicast)
 169 {
 170         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 171
 172         /* Return if WEP key not configured */
 173         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 174                 return 0;
 175
 176         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 177                 wiphy_err(wiphy, "set default Tx key index\n");
 178                 return -EFAULT;
 179         }
 180
 181         return 0;
 182 }
 183
 184 /*
 185  * CFG802.11 operation handler to add a network key.
 186  */
 187 static int
 188 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 189                          u8 key_index, bool pairwise, const u8 *mac_addr,
 190                          struct key_params *params)
 191 {
 192         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 193
 194         if (mwifiex_set_encode(priv, params->key, params->key_len,
 195                                                         key_index, 0)) {
 196                 wiphy_err(wiphy, "crypto keys added\n");
 197                 return -EFAULT;
 198         }
 199
 200         return 0;
 201 }
 202
 203 /*
 204  * This function sends domain information to the firmware.
 205  *
 206  * The following information are passed to the firmware -
 207  *      - Country codes
 208  *      - Sub bands (first channel, number of channels, maximum Tx power)
 209  */
 210 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 211 {
 212         u8 no_of_triplet = 0;
 213         struct ieee80211_country_ie_triplet *t;
 214         u8 no_of_parsed_chan = 0;
 215         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 216         u8 i, flag = 0;
 217         enum ieee80211_band band;
 218         struct ieee80211_supported_band *sband;
 219         struct ieee80211_channel *ch;
 220         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 221         struct mwifiex_adapter *adapter = priv->adapter;
 222         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 223
 224         /* Set country code */
 225         domain_info->country_code[0] = priv->country_code[0];
 226         domain_info->country_code[1] = priv->country_code[1];
 227         domain_info->country_code[2] = ' ';
 228
 229         band = mwifiex_band_to_radio_type(adapter->config_bands);
 230         if (!wiphy->bands[band]) {
 231                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 232                 return -1;
 233         }
 234
 235         sband = wiphy->bands[band];
 236
 237         for (i = 0; i < sband->n_channels ; i++) {
 238                 ch = &sband->channels[i];
 239                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 240                         continue;
 241
 242                 if (!flag) {
 243                         flag = 1;
 244                         first_chan = (u32) ch->hw_value;
 245                         next_chan = first_chan;
 246                         max_pwr = ch->max_power;
 247                         no_of_parsed_chan = 1;
 248                         continue;
 249                 }
 250
 251                 if (ch->hw_value == next_chan + 1 &&
 252                                 ch->max_power == max_pwr) {
 253                         next_chan++;
 254                         no_of_parsed_chan++;
 255                 } else {
 256                         t = &domain_info->triplet[no_of_triplet];
 257                         t->chans.first_channel = first_chan;
 258                         t->chans.num_channels = no_of_parsed_chan;
 259                         t->chans.max_power = max_pwr;
 260                         no_of_triplet++;
 261                         first_chan = (u32) ch->hw_value;
 262                         next_chan = first_chan;
 263                         max_pwr = ch->max_power;
 264                         no_of_parsed_chan = 1;
 265                 }
 266         }
 267
 268         if (flag) {
 269                 t = &domain_info->triplet[no_of_triplet];
 270                 t->chans.first_channel = first_chan;
 271                 t->chans.num_channels = no_of_parsed_chan;
 272                 t->chans.max_power = max_pwr;
 273                 no_of_triplet++;
 274         }
 275
 276         domain_info->no_of_triplet = no_of_triplet;
 277
 278         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 279                                      HostCmd_ACT_GEN_SET, 0, NULL)) {
 280                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 281                 return -1;
 282         }
 283
 284         return 0;
 285 }
 286
 287 /*
 288  * CFG802.11 regulatory domain callback function.
 289  *
 290  * This function is called when the regulatory domain is changed due to the
 291  * following reasons -
 292  *      - Set by driver
 293  *      - Set by system core
 294  *      - Set by user
 295  *      - Set bt Country IE
 296  */
 297 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 298                 struct regulatory_request *request)
 299 {
 300         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 301
 302         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 303                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 304
 305         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 306
 307         switch (request->initiator) {
 308         case NL80211_REGDOM_SET_BY_DRIVER:
 309         case NL80211_REGDOM_SET_BY_CORE:
 310         case NL80211_REGDOM_SET_BY_USER:
 311                 break;
 312                 /* Todo: apply driver specific changes in channel flags based
 313                    on the request initiator if necessary. */
 314         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 315                 break;
 316         }
 317         mwifiex_send_domain_info_cmd_fw(wiphy);
 318
 319         return 0;
 320 }
 321
 322 /*
 323  * This function sets the RF channel.
 324  *
 325  * This function creates multiple IOCTL requests, populates them accordingly
 326  * and issues them to set the band/channel and frequency.
 327  */
 328 static int
 329 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 330                        struct ieee80211_channel *chan,
 331                        enum nl80211_channel_type channel_type)
 332 {
 333         struct mwifiex_chan_freq_power cfp;
 334         u32 config_bands = 0;
 335         struct wiphy *wiphy = priv->wdev->wiphy;
 336         struct mwifiex_adapter *adapter = priv->adapter;
 337
 338         if (chan) {
 339                 /* Set appropriate bands */
 340                 if (chan->band == IEEE80211_BAND_2GHZ)
 341                         config_bands = BAND_B | BAND_G | BAND_GN;
 342                 else
 343                         config_bands = BAND_AN | BAND_A;
 344
 345                 if (!((config_bands | adapter->fw_bands) &
 346                                                 ~adapter->fw_bands)) {
 347                         adapter->config_bands = config_bands;
 348                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 349                                 adapter->adhoc_start_band = config_bands;
 350                                 if ((config_bands & BAND_GN) ||
 351                                                 (config_bands & BAND_AN))
 352                                         adapter->adhoc_11n_enabled = true;
 353                                 else
 354                                         adapter->adhoc_11n_enabled = false;
 355                         }
 356                 }
 357                 adapter->sec_chan_offset =
 358                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 359                         (channel_type);
 360
 361                 mwifiex_send_domain_info_cmd_fw(wiphy);
 362         }
 363
 364         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 365                 "mode %d\n", config_bands, adapter->sec_chan_offset,
 366                 priv->bss_mode);
 367         if (!chan)
 368                 return 0;
 369
 370         memset(&cfp, 0, sizeof(cfp));
 371         cfp.freq = chan->center_freq;
 372         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 373
 374         if (mwifiex_bss_set_channel(priv, &cfp))
 375                 return -EFAULT;
 376
 377         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 378 }
 379
 380 /*
 381  * CFG802.11 operation handler to set channel.
 382  *
 383  * This function can only be used when station is not connected.
 384  */
 385 static int
 386 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 387                              struct ieee80211_channel *chan,
 388                              enum nl80211_channel_type channel_type)
 389 {
 390         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 391
 392         if (priv->media_connected) {
 393                 wiphy_err(wiphy, "This setting is valid only when station "
 394                                 "is not connected\n");
 395                 return -EINVAL;
 396         }
 397
 398         return mwifiex_set_rf_channel(priv, chan, channel_type);
 399 }
 400
 401 /*
 402  * This function sets the fragmentation threshold.
 403  *
 404  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 405  * and MWIFIEX_FRAG_MAX_VALUE.
 406  */
 407 static int
 408 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 409 {
 410         int ret;
 411
 412         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 413             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 414                 return -EINVAL;
 415
 416         /* Send request to firmware */
 417         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 418                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 419                                     &frag_thr);
 420
 421         return ret;
 422 }
 423
 424 /*
 425  * This function sets the RTS threshold.
 426
 427  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 428  * and MWIFIEX_RTS_MAX_VALUE.
 429  */
 430 static int
 431 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 432 {
 433         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 434                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 435
 436         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 437                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 438                                     &rts_thr);
 439 }
 440
 441 /*
 442  * CFG802.11 operation handler to set wiphy parameters.
 443  *
 444  * This function can be used to set the RTS threshold and the
 445  * Fragmentation threshold of the driver.
 446  */
 447 static int
 448 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 449 {
 450         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 451         int ret = 0;
 452
 453         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 454                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 455                 if (ret)
 456                         return ret;
 457         }
 458
 459         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 460                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 461
 462         return ret;
 463 }
 464
 465 /*
 466  * CFG802.11 operation handler to change interface type.
 467  */
 468 static int
 469 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 470                                      struct net_device *dev,
 471                                      enum nl80211_iftype type, u32 *flags,
 472                                      struct vif_params *params)
 473 {
 474         int ret;
 475         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 476
 477         if (priv->bss_mode == type) {
 478                 wiphy_warn(wiphy, "already set to required type\n");
 479                 return 0;
 480         }
 481
 482         priv->bss_mode = type;
 483
 484         switch (type) {
 485         case NL80211_IFTYPE_ADHOC:
 486                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 487                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 488                 break;
 489         case NL80211_IFTYPE_STATION:
 490                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 491                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 492                 break;
 493         case NL80211_IFTYPE_UNSPECIFIED:
 494                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 495                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 496                 return 0;
 497         default:
 498                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 499                 return -EINVAL;
 500         }
 501
 502         mwifiex_deauthenticate(priv, NULL);
 503
 504         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 505
 506         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 507                                     HostCmd_ACT_GEN_SET, 0, NULL);
 508
 509         return ret;
 510 }
 511
 512 /*
 513  * This function dumps the station information on a buffer.
 514  *
 515  * The following information are shown -
 516  *      - Total bytes transmitted
 517  *      - Total bytes received
 518  *      - Total packets transmitted
 519  *      - Total packets received
 520  *      - Signal quality level
 521  *      - Transmission rate
 522  */
 523 static int
 524 mwifiex_dump_station_info(struct mwifiex_private *priv,
 525                           struct station_info *sinfo)
 526 {
 527         struct mwifiex_ds_get_signal signal;
 528         struct mwifiex_rate_cfg rate;
 529         int ret = 0;
 530
 531         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 532                 STATION_INFO_RX_PACKETS |
 533                 STATION_INFO_TX_PACKETS
 534                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 535
 536         /* Get signal information from the firmware */
 537         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 538         if (mwifiex_get_signal_info(priv, &signal)) {
 539                 dev_err(priv->adapter->dev, "getting signal information\n");
 540                 ret = -EFAULT;
 541         }
 542
 543         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 544                 dev_err(priv->adapter->dev, "getting data rate\n");
 545                 ret = -EFAULT;
 546         }
 547
 548         /*
 549          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 550          * MCS index values for us are 0 to 7.
 551          */
 552         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
 553                 sinfo->txrate.mcs = priv->tx_rate;
 554                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 555                 /* 40MHz rate */
 556                 if (priv->tx_htinfo & BIT(1))
 557                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 558                 /* SGI enabled */
 559                 if (priv->tx_htinfo & BIT(2))
 560                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 561         }
 562
 563         sinfo->rx_bytes = priv->stats.rx_bytes;
 564         sinfo->tx_bytes = priv->stats.tx_bytes;
 565         sinfo->rx_packets = priv->stats.rx_packets;
 566         sinfo->tx_packets = priv->stats.tx_packets;
 567         sinfo->signal = priv->qual_level;
 568         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 569         sinfo->txrate.legacy = rate.rate * 5;
 570
 571         return ret;
 572 }
 573
 574 /*
 575  * CFG802.11 operation handler to get station information.
 576  *
 577  * This function only works in connected mode, and dumps the
 578  * requested station information, if available.
 579  */
 580 static int
 581 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 582                              u8 *mac, struct station_info *sinfo)
 583 {
 584         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 585
 586         if (!priv->media_connected)
 587                 return -ENOENT;
 588         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 589                 return -ENOENT;
 590
 591         return mwifiex_dump_station_info(priv, sinfo);
 592 }
 593
 594 /* Supported rates to be advertised to the cfg80211 */
 595
 596 static struct ieee80211_rate mwifiex_rates[] = {
 597         {.bitrate = 10, .hw_value = 2, },
 598         {.bitrate = 20, .hw_value = 4, },
 599         {.bitrate = 55, .hw_value = 11, },
 600         {.bitrate = 110, .hw_value = 22, },
 601         {.bitrate = 220, .hw_value = 44, },
 602         {.bitrate = 60, .hw_value = 12, },
 603         {.bitrate = 90, .hw_value = 18, },
 604         {.bitrate = 120, .hw_value = 24, },
 605         {.bitrate = 180, .hw_value = 36, },
 606         {.bitrate = 240, .hw_value = 48, },
 607         {.bitrate = 360, .hw_value = 72, },
 608         {.bitrate = 480, .hw_value = 96, },
 609         {.bitrate = 540, .hw_value = 108, },
 610         {.bitrate = 720, .hw_value = 144, },
 611 };
 612
 613 /* Channel definitions to be advertised to cfg80211 */
 614
 615 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 616         {.center_freq = 2412, .hw_value = 1, },
 617         {.center_freq = 2417, .hw_value = 2, },
 618         {.center_freq = 2422, .hw_value = 3, },
 619         {.center_freq = 2427, .hw_value = 4, },
 620         {.center_freq = 2432, .hw_value = 5, },
 621         {.center_freq = 2437, .hw_value = 6, },
 622         {.center_freq = 2442, .hw_value = 7, },
 623         {.center_freq = 2447, .hw_value = 8, },
 624         {.center_freq = 2452, .hw_value = 9, },
 625         {.center_freq = 2457, .hw_value = 10, },
 626         {.center_freq = 2462, .hw_value = 11, },
 627         {.center_freq = 2467, .hw_value = 12, },
 628         {.center_freq = 2472, .hw_value = 13, },
 629         {.center_freq = 2484, .hw_value = 14, },
 630 };
 631
 632 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 633         .channels = mwifiex_channels_2ghz,
 634         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 635         .bitrates = mwifiex_rates,
 636         .n_bitrates = 14,
 637 };
 638
 639 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 640         {.center_freq = 5040, .hw_value = 8, },
 641         {.center_freq = 5060, .hw_value = 12, },
 642         {.center_freq = 5080, .hw_value = 16, },
 643         {.center_freq = 5170, .hw_value = 34, },
 644         {.center_freq = 5190, .hw_value = 38, },
 645         {.center_freq = 5210, .hw_value = 42, },
 646         {.center_freq = 5230, .hw_value = 46, },
 647         {.center_freq = 5180, .hw_value = 36, },
 648         {.center_freq = 5200, .hw_value = 40, },
 649         {.center_freq = 5220, .hw_value = 44, },
 650         {.center_freq = 5240, .hw_value = 48, },
 651         {.center_freq = 5260, .hw_value = 52, },
 652         {.center_freq = 5280, .hw_value = 56, },
 653         {.center_freq = 5300, .hw_value = 60, },
 654         {.center_freq = 5320, .hw_value = 64, },
 655         {.center_freq = 5500, .hw_value = 100, },
 656         {.center_freq = 5520, .hw_value = 104, },
 657         {.center_freq = 5540, .hw_value = 108, },
 658         {.center_freq = 5560, .hw_value = 112, },
 659         {.center_freq = 5580, .hw_value = 116, },
 660         {.center_freq = 5600, .hw_value = 120, },
 661         {.center_freq = 5620, .hw_value = 124, },
 662         {.center_freq = 5640, .hw_value = 128, },
 663         {.center_freq = 5660, .hw_value = 132, },
 664         {.center_freq = 5680, .hw_value = 136, },
 665         {.center_freq = 5700, .hw_value = 140, },
 666         {.center_freq = 5745, .hw_value = 149, },
 667         {.center_freq = 5765, .hw_value = 153, },
 668         {.center_freq = 5785, .hw_value = 157, },
 669         {.center_freq = 5805, .hw_value = 161, },
 670         {.center_freq = 5825, .hw_value = 165, },
 671 };
 672
 673 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 674         .channels = mwifiex_channels_5ghz,
 675         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 676         .bitrates = mwifiex_rates - 4,
 677         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 678 };
 679
 680
 681 /* Supported crypto cipher suits to be advertised to cfg80211 */
 682
 683 static const u32 mwifiex_cipher_suites[] = {
 684         WLAN_CIPHER_SUITE_WEP40,
 685         WLAN_CIPHER_SUITE_WEP104,
 686         WLAN_CIPHER_SUITE_TKIP,
 687         WLAN_CIPHER_SUITE_CCMP,
 688 };
 689
 690 /*
 691  * CFG802.11 operation handler for setting bit rates.
 692  *
 693  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 694  * Currently only 2.4GHz band is supported.
 695  */
 696 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 697                                 struct net_device *dev,
 698                                 const u8 *peer,
 699                                 const struct cfg80211_bitrate_mask *mask)
 700 {
 701         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 702         int index = 0, mode = 0, i;
 703         struct mwifiex_adapter *adapter = priv->adapter;
 704
 705         /* Currently only 2.4GHz is supported */
 706         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 707                 /*
 708                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 709                  * and from 6 they are OFDM; 802.11G
 710                  */
 711                 if (mwifiex_rates[i].bitrate == 60) {
 712                         index = 1 << i;
 713                         break;
 714                 }
 715         }
 716
 717         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 718                 mode = BAND_B;
 719         } else {
 720                 mode = BAND_G;
 721                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 722                         mode |=  BAND_B;
 723         }
 724
 725         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 726                 adapter->config_bands = mode;
 727                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 728                         adapter->adhoc_start_band = mode;
 729                         adapter->adhoc_11n_enabled = false;
 730                 }
 731         }
 732         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 733
 734         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 735                                 (mode & BAND_B) ? "b" : "",
 736                                 (mode & BAND_G) ? "g" : "");
 737
 738         return 0;
 739 }
 740
 741 /*
 742  * CFG802.11 operation handler for disconnection request.
 743  *
 744  * This function does not work when there is already a disconnection
 745  * procedure going on.
 746  */
 747 static int
 748 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 749                             u16 reason_code)
 750 {
 751         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 752
 753         if (mwifiex_deauthenticate(priv, NULL))
 754                 return -EFAULT;
 755
 756         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 757                 " reason code %d\n", priv->cfg_bssid, reason_code);
 758
 759         memset(priv->cfg_bssid, 0, ETH_ALEN);
 760
 761         return 0;
 762 }
 763
 764 /*
 765  * This function informs the CFG802.11 subsystem of a new IBSS.
 766  *
 767  * The following information are sent to the CFG802.11 subsystem
 768  * to register the new IBSS. If we do not register the new IBSS,
 769  * a kernel panic will result.
 770  *      - SSID
 771  *      - SSID length
 772  *      - BSSID
 773  *      - Channel
 774  */
 775 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 776 {
 777         struct ieee80211_channel *chan;
 778         struct mwifiex_bss_info bss_info;
 779         struct cfg80211_bss *bss;
 780         int ie_len;
 781         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 782         enum ieee80211_band band;
 783
 784         if (mwifiex_get_bss_info(priv, &bss_info))
 785                 return -1;
 786
 787         ie_buf[0] = WLAN_EID_SSID;
 788         ie_buf[1] = bss_info.ssid.ssid_len;
 789
 790         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 791                         &bss_info.ssid.ssid,
 792                         bss_info.ssid.ssid_len);
 793         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 794
 795         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 796         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 797                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 798                                                        band));
 799
 800         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 801                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 802                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 803         cfg80211_put_bss(bss);
 804         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 805
 806         return 0;
 807 }
 808
 809 /*
 810  * This function connects with a BSS.
 811  *
 812  * This function handles both Infra and Ad-Hoc modes. It also performs
 813  * validity checking on the provided parameters, disconnects from the
 814  * current BSS (if any), sets up the association/scan parameters,
 815  * including security settings, and performs specific SSID scan before
 816  * trying to connect.
 817  *
 818  * For Infra mode, the function returns failure if the specified SSID
 819  * is not found in scan table. However, for Ad-Hoc mode, it can create
 820  * the IBSS if it does not exist. On successful completion in either case,
 821  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 822  */
 823 static int
 824 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 825                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 826                        struct cfg80211_connect_params *sme, bool privacy)
 827 {
 828         struct mwifiex_802_11_ssid req_ssid;
 829         int ret, auth_type = 0;
 830         struct cfg80211_bss *bss = NULL;
 831         u8 is_scanning_required = 0;
 832
 833         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 834
 835         req_ssid.ssid_len = ssid_len;
 836         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 837                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 838                 return -EINVAL;
 839         }
 840
 841         memcpy(req_ssid.ssid, ssid, ssid_len);
 842         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 843                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 844                 return -EINVAL;
 845         }
 846
 847         /* disconnect before try to associate */
 848         mwifiex_deauthenticate(priv, NULL);
 849
 850         if (channel)
 851                 ret = mwifiex_set_rf_channel(priv, channel,
 852                                 mwifiex_channels_to_cfg80211_channel_type
 853                                 (priv->adapter->sec_chan_offset));
 854
 855         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 856
 857         if (mode == NL80211_IFTYPE_ADHOC) {
 858                 /* "privacy" is set only for ad-hoc mode */
 859                 if (privacy) {
 860                         /*
 861                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 862                          * the firmware can find a matching network from the
 863                          * scan. The cfg80211 does not give us the encryption
 864                          * mode at this stage so just setting it to WEP here.
 865                          */
 866                         priv->sec_info.encryption_mode =
 867                                         WLAN_CIPHER_SUITE_WEP104;
 868                         priv->sec_info.authentication_mode =
 869                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 870                 }
 871
 872                 goto done;
 873         }
 874
 875         /* Now handle infra mode. "sme" is valid for infra mode only */
 876         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 877                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 878                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 879         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 880                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 881
 882         if (sme->crypto.n_ciphers_pairwise) {
 883                 priv->sec_info.encryption_mode =
 884                                                 sme->crypto.ciphers_pairwise[0];
 885                 priv->sec_info.authentication_mode = auth_type;
 886         }
 887
 888         if (sme->crypto.cipher_group) {
 889                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 890                 priv->sec_info.authentication_mode = auth_type;
 891         }
 892         if (sme->ie)
 893                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 894
 895         if (sme->key) {
 896                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 897                         dev_dbg(priv->adapter->dev,
 898                                 "info: setting wep encryption"
 899                                 " with key len %d\n", sme->key_len);
 900                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 901                                                         sme->key_idx, 0);
 902                 }
 903         }
 904 done:
 905         /* Do specific SSID scanning */
 906         if (mwifiex_request_scan(priv, &req_ssid)) {
 907                 dev_err(priv->adapter->dev, "scan error\n");
 908                 return -EFAULT;
 909         }
 910
 911         /*
 912          * Scan entries are valid for some time (15 sec). So we can save one
 913          * active scan time if we just try cfg80211_get_bss first. If it fails
 914          * then request scan and cfg80211_get_bss() again for final output.
 915          */
 916         while (1) {
 917                 if (is_scanning_required) {
 918                         /* Do specific SSID scanning */
 919                         if (mwifiex_request_scan(priv, &req_ssid)) {
 920                                 dev_err(priv->adapter->dev, "scan error\n");
 921                                 return -EFAULT;
 922                         }
 923                 }
 924
 925                 /* Find the BSS we want using available scan results */
 926                 if (mode == NL80211_IFTYPE_ADHOC)
 927                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 928                                                bssid, ssid, ssid_len,
 929                                                WLAN_CAPABILITY_IBSS,
 930                                                WLAN_CAPABILITY_IBSS);
 931                 else
 932                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 933                                                bssid, ssid, ssid_len,
 934                                                WLAN_CAPABILITY_ESS,
 935                                                WLAN_CAPABILITY_ESS);
 936
 937                 if (!bss) {
 938                         if (is_scanning_required) {
 939                                 dev_warn(priv->adapter->dev, "assoc: requested "
 940                                          "bss not found in scan results\n");
 941                                 break;
 942                         }
 943                         is_scanning_required = 1;
 944                 } else {
 945                         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
 946                                         (char *) req_ssid.ssid, bss->bssid);
 947                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
 948                         break;
 949                 }
 950         }
 951
 952         if (mwifiex_bss_start(priv, bss, &req_ssid))
 953                 return -EFAULT;
 954
 955         if (mode == NL80211_IFTYPE_ADHOC) {
 956                 /* Inform the BSS information to kernel, otherwise
 957                  * kernel will give a panic after successful assoc */
 958                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
 959                         return -EFAULT;
 960         }
 961
 962         return ret;
 963 }
 964
 965 /*
 966  * CFG802.11 operation handler for association request.
 967  *
 968  * This function does not work when the current mode is set to Ad-Hoc, or
 969  * when there is already an association procedure going on. The given BSS
 970  * information is used to associate.
 971  */
 972 static int
 973 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 974                          struct cfg80211_connect_params *sme)
 975 {
 976         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 977         int ret = 0;
 978
 979         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 980                 wiphy_err(wiphy, "received infra assoc request "
 981                                 "when station is in ibss mode\n");
 982                 goto done;
 983         }
 984
 985         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
 986                (char *) sme->ssid, sme->bssid);
 987
 988         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
 989                                      priv->bss_mode, sme->channel, sme, 0);
 990 done:
 991         if (!ret) {
 992                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
 993                                         NULL, 0, WLAN_STATUS_SUCCESS,
 994                                         GFP_KERNEL);
 995                 dev_dbg(priv->adapter->dev,
 996                         "info: associated to bssid %pM successfully\n",
 997                         priv->cfg_bssid);
 998         } else {
 999                 dev_dbg(priv->adapter->dev,
1000                         "info: association to bssid %pM failed\n",
1001                         priv->cfg_bssid);
1002                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1003         }
1004
1005         return ret;
1006 }
1007
1008 /*
1009  * CFG802.11 operation handler to join an IBSS.
1010  *
1011  * This function does not work in any mode other than Ad-Hoc, or if
1012  * a join operation is already in progress.
1013  */
1014 static int
1015 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1016                            struct cfg80211_ibss_params *params)
1017 {
1018         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1019         int ret = 0;
1020
1021         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1022                 wiphy_err(wiphy, "request to join ibss received "
1023                                 "when station is not in ibss mode\n");
1024                 goto done;
1025         }
1026
1027         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1028                (char *) params->ssid, params->bssid);
1029
1030         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1031                                 params->bssid, priv->bss_mode,
1032                                 params->channel, NULL, params->privacy);
1033 done:
1034         if (!ret) {
1035                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1036                 dev_dbg(priv->adapter->dev,
1037                         "info: joined/created adhoc network with bssid"
1038                         " %pM successfully\n", priv->cfg_bssid);
1039         } else {
1040                 dev_dbg(priv->adapter->dev,
1041                         "info: failed creating/joining adhoc network\n");
1042         }
1043
1044         return ret;
1045 }
1046
1047 /*
1048  * CFG802.11 operation handler to leave an IBSS.
1049  *
1050  * This function does not work if a leave operation is
1051  * already in progress.
1052  */
1053 static int
1054 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1055 {
1056         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1057
1058         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1059                         priv->cfg_bssid);
1060         if (mwifiex_deauthenticate(priv, NULL))
1061                 return -EFAULT;
1062
1063         memset(priv->cfg_bssid, 0, ETH_ALEN);
1064
1065         return 0;
1066 }
1067
1068 /*
1069  * CFG802.11 operation handler for scan request.
1070  *
1071  * This function issues a scan request to the firmware based upon
1072  * the user specified scan configuration. On successfull completion,
1073  * it also informs the results.
1074  */
1075 static int
1076 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1077                       struct cfg80211_scan_request *request)
1078 {
1079         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1080         int i;
1081         struct ieee80211_channel *chan;
1082
1083         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1084
1085         priv->scan_request = request;
1086
1087         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1088                                         GFP_KERNEL);
1089         if (!priv->user_scan_cfg) {
1090                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1091                 return -ENOMEM;
1092         }
1093         for (i = 0; i < request->n_ssids; i++) {
1094                 memcpy(priv->user_scan_cfg->ssid_list[i].ssid,
1095                         request->ssids[i].ssid, request->ssids[i].ssid_len);
1096                 priv->user_scan_cfg->ssid_list[i].max_len =
1097                         request->ssids[i].ssid_len;
1098         }
1099         for (i = 0; i < request->n_channels; i++) {
1100                 chan = request->channels[i];
1101                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1102                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1103
1104                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1105                         priv->user_scan_cfg->chan_list[i].scan_type =
1106                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1107                 else
1108                         priv->user_scan_cfg->chan_list[i].scan_type =
1109                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1110
1111                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1112         }
1113         if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1114                 return -EFAULT;
1115
1116         return 0;
1117 }
1118
1119 /*
1120  * This function sets up the CFG802.11 specific HT capability fields
1121  * with default values.
1122  *
1123  * The following default values are set -
1124  *      - HT Supported = True
1125  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1126  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1127  *      - HT Capabilities supported by firmware
1128  *      - MCS information, Rx mask = 0xff
1129  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1130  */
1131 static void
1132 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1133                       struct mwifiex_private *priv)
1134 {
1135         int rx_mcs_supp;
1136         struct ieee80211_mcs_info mcs_set;
1137         u8 *mcs = (u8 *)&mcs_set;
1138         struct mwifiex_adapter *adapter = priv->adapter;
1139
1140         ht_info->ht_supported = true;
1141         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1142         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1143
1144         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1145
1146         /* Fill HT capability information */
1147         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1148                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1149         else
1150                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1151
1152         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1153                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1154         else
1155                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1156
1157         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1158                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1159         else
1160                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1161
1162         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1163                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1164         else
1165                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1166
1167         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1168                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1169         else
1170                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1171
1172         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1173         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1174
1175         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1176         /* Set MCS for 1x1 */
1177         memset(mcs, 0xff, rx_mcs_supp);
1178         /* Clear all the other values */
1179         memset(&mcs[rx_mcs_supp], 0,
1180                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1181         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1182                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1183                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1184                 SETHT_MCS32(mcs_set.rx_mask);
1185
1186         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1187
1188         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1189 }
1190
1191 /*
1192  *  create a new virtual interface with the given name
1193  */
1194 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1195                                                 char *name,
1196                                                 enum nl80211_iftype type,
1197                                                 u32 *flags,
1198                                                 struct vif_params *params)
1199 {
1200         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1201         struct mwifiex_adapter *adapter;
1202         struct net_device *dev;
1203         void *mdev_priv;
1204
1205         if (!priv)
1206                 return NULL;
1207
1208         adapter = priv->adapter;
1209         if (!adapter)
1210                 return NULL;
1211
1212         switch (type) {
1213         case NL80211_IFTYPE_UNSPECIFIED:
1214         case NL80211_IFTYPE_STATION:
1215         case NL80211_IFTYPE_ADHOC:
1216                 if (priv->bss_mode) {
1217                         wiphy_err(wiphy, "cannot create multiple"
1218                                         " station/adhoc interfaces\n");
1219                         return NULL;
1220                 }
1221
1222                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1223                         priv->bss_mode = NL80211_IFTYPE_STATION;
1224                 else
1225                         priv->bss_mode = type;
1226
1227                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1228                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1229                 priv->bss_priority = 0;
1230                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1231                 priv->bss_index = 0;
1232                 priv->bss_num = 0;
1233
1234                 break;
1235         default:
1236                 wiphy_err(wiphy, "type not supported\n");
1237                 return NULL;
1238         }
1239
1240         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1241                               ether_setup, 1);
1242         if (!dev) {
1243                 wiphy_err(wiphy, "no memory available for netdevice\n");
1244                 goto error;
1245         }
1246
1247         dev_net_set(dev, wiphy_net(wiphy));
1248         dev->ieee80211_ptr = priv->wdev;
1249         dev->ieee80211_ptr->iftype = priv->bss_mode;
1250         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1251         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1252         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1253
1254         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1255         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1256         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1257
1258         mdev_priv = netdev_priv(dev);
1259         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1260
1261         priv->netdev = dev;
1262         mwifiex_init_priv_params(priv, dev);
1263
1264         SET_NETDEV_DEV(dev, adapter->dev);
1265
1266         /* Register network device */
1267         if (register_netdevice(dev)) {
1268                 wiphy_err(wiphy, "cannot register virtual network device\n");
1269                 goto error;
1270         }
1271
1272         sema_init(&priv->async_sem, 1);
1273         priv->scan_pending_on_block = false;
1274
1275         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1276
1277 #ifdef CONFIG_DEBUG_FS
1278         mwifiex_dev_debugfs_init(priv);
1279 #endif
1280         return dev;
1281 error:
1282         if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1283                 free_netdev(dev);
1284         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1285
1286         return NULL;
1287 }
1288 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1289
1290 /*
1291  * del_virtual_intf: remove the virtual interface determined by dev
1292  */
1293 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1294 {
1295         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1296
1297         if (!priv || !dev)
1298                 return 0;
1299
1300 #ifdef CONFIG_DEBUG_FS
1301         mwifiex_dev_debugfs_remove(priv);
1302 #endif
1303
1304         if (!netif_queue_stopped(priv->netdev))
1305                 netif_stop_queue(priv->netdev);
1306
1307         if (netif_carrier_ok(priv->netdev))
1308                 netif_carrier_off(priv->netdev);
1309
1310         if (dev->reg_state == NETREG_REGISTERED)
1311                 unregister_netdevice(dev);
1312
1313         if (dev->reg_state == NETREG_UNREGISTERED)
1314                 free_netdev(dev);
1315
1316         /* Clear the priv in adapter */
1317         priv->netdev = NULL;
1318
1319         priv->media_connected = false;
1320
1321         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1322
1323         return 0;
1324 }
1325 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1326
1327 /* station cfg80211 operations */
1328 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1329         .add_virtual_intf = mwifiex_add_virtual_intf,
1330         .del_virtual_intf = mwifiex_del_virtual_intf,
1331         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1332         .scan = mwifiex_cfg80211_scan,
1333         .connect = mwifiex_cfg80211_connect,
1334         .disconnect = mwifiex_cfg80211_disconnect,
1335         .get_station = mwifiex_cfg80211_get_station,
1336         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1337         .set_channel = mwifiex_cfg80211_set_channel,
1338         .join_ibss = mwifiex_cfg80211_join_ibss,
1339         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1340         .add_key = mwifiex_cfg80211_add_key,
1341         .del_key = mwifiex_cfg80211_del_key,
1342         .set_default_key = mwifiex_cfg80211_set_default_key,
1343         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1344         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1345         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1346 };
1347
1348 /*
1349  * This function registers the device with CFG802.11 subsystem.
1350  *
1351  * The function creates the wireless device/wiphy, populates it with
1352  * default parameters and handler function pointers, and finally
1353  * registers the device.
1354  */
1355 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1356 {
1357         int ret;
1358         void *wdev_priv;
1359         struct wireless_dev *wdev;
1360
1361         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1362         if (!wdev) {
1363                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1364                                                 __func__);
1365                 return -ENOMEM;
1366         }
1367         wdev->wiphy =
1368                 wiphy_new(&mwifiex_cfg80211_ops,
1369                           sizeof(struct mwifiex_private *));
1370         if (!wdev->wiphy) {
1371                 kfree(wdev);
1372                 return -ENOMEM;
1373         }
1374         wdev->iftype = NL80211_IFTYPE_STATION;
1375         wdev->wiphy->max_scan_ssids = 10;
1376         wdev->wiphy->interface_modes =
1377                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1378
1379         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1380         mwifiex_setup_ht_caps(
1381                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1382
1383         if (priv->adapter->config_bands & BAND_A) {
1384                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1385                 mwifiex_setup_ht_caps(
1386                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1387         } else {
1388                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1389         }
1390
1391         /* Initialize cipher suits */
1392         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1393         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1394
1395         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1396         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1397
1398         /* Reserve space for bss band information */
1399         wdev->wiphy->bss_priv_size = sizeof(u8);
1400
1401         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1402
1403         /* Set struct mwifiex_private pointer in wiphy_priv */
1404         wdev_priv = wiphy_priv(wdev->wiphy);
1405
1406         *(unsigned long *) wdev_priv = (unsigned long) priv;
1407
1408         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1409
1410         ret = wiphy_register(wdev->wiphy);
1411         if (ret < 0) {
1412                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1413                                                 __func__);
1414                 wiphy_free(wdev->wiphy);
1415                 kfree(wdev);
1416                 return ret;
1417         } else {
1418                 dev_dbg(priv->adapter->dev,
1419                                 "info: successfully registered wiphy device\n");
1420         }
1421
1422         priv->wdev = wdev;
1423
1424         return ret;
1425 }