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     -> NO_SEC_CHANNEL
  28  *      NL80211_CHAN_HT20      -> NO_SEC_CHANNEL
  29  *      NL80211_CHAN_HT40PLUS  -> SEC_CHANNEL_ABOVE
  30  *      NL80211_CHAN_HT40MINUS -> SEC_CHANNEL_BELOW
  31  *      Others                 -> NO_SEC_CHANNEL
  32  */
  33 static int
  34 mwifiex_cfg80211_channel_type_to_mwifiex_channels(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 NO_SEC_CHANNEL;
  41         case NL80211_CHAN_HT40PLUS:
  42                 return SEC_CHANNEL_ABOVE;
  43         case NL80211_CHAN_HT40MINUS:
  44                 return SEC_CHANNEL_BELOW;
  45         default:
  46                 return NO_SEC_CHANNEL;
  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  *      NO_SEC_CHANNEL      -> NL80211_CHAN_HT20
  55  *      SEC_CHANNEL_ABOVE   -> NL80211_CHAN_HT40PLUS
  56  *      SEC_CHANNEL_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 NO_SEC_CHANNEL:
  64                 return NL80211_CHAN_HT20;
  65         case SEC_CHANNEL_ABOVE:
  66                 return NL80211_CHAN_HT40PLUS;
  67         case SEC_CHANNEL_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 dbm)
 124 {
 125         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 126         struct mwifiex_power_cfg power_cfg;
 127
 128         if (type == NL80211_TX_POWER_FIXED) {
 129                 power_cfg.is_power_auto = 0;
 130                 power_cfg.power_level = dbm;
 131         } else {
 132                 power_cfg.is_power_auto = 1;
 133         }
 134
 135         return mwifiex_set_tx_power(priv, &power_cfg);
 136 }
 137
 138 /*
 139  * CFG802.11 operation handler to set Power Save option.
 140  *
 141  * The timeout value, if provided, is currently ignored.
 142  */
 143 static int
 144 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 145                                 struct net_device *dev,
 146                                 bool enabled, int timeout)
 147 {
 148         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 149         u32 ps_mode;
 150
 151         if (timeout)
 152                 wiphy_dbg(wiphy,
 153                         "info: ignoring the timeout value"
 154                         " for IEEE power save\n");
 155
 156         ps_mode = enabled;
 157
 158         return mwifiex_drv_set_power(priv, &ps_mode);
 159 }
 160
 161 /*
 162  * CFG802.11 operation handler to set the default network key.
 163  */
 164 static int
 165 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 166                                  u8 key_index, bool unicast,
 167                                  bool multicast)
 168 {
 169         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 170
 171         /* Return if WEP key not configured */
 172         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 173                 return 0;
 174
 175         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 176                 wiphy_err(wiphy, "set default Tx key index\n");
 177                 return -EFAULT;
 178         }
 179
 180         return 0;
 181 }
 182
 183 /*
 184  * CFG802.11 operation handler to add a network key.
 185  */
 186 static int
 187 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 188                          u8 key_index, bool pairwise, const u8 *mac_addr,
 189                          struct key_params *params)
 190 {
 191         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 192
 193         if (mwifiex_set_encode(priv, params->key, params->key_len,
 194                                                         key_index, 0)) {
 195                 wiphy_err(wiphy, "crypto keys added\n");
 196                 return -EFAULT;
 197         }
 198
 199         return 0;
 200 }
 201
 202 /*
 203  * This function sends domain information to the firmware.
 204  *
 205  * The following information are passed to the firmware -
 206  *      - Country codes
 207  *      - Sub bands (first channel, number of channels, maximum Tx power)
 208  */
 209 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 210 {
 211         u8 no_of_triplet = 0;
 212         struct ieee80211_country_ie_triplet *t;
 213         u8 no_of_parsed_chan = 0;
 214         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 215         u8 i, flag = 0;
 216         enum ieee80211_band band;
 217         struct ieee80211_supported_band *sband;
 218         struct ieee80211_channel *ch;
 219         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 220         struct mwifiex_adapter *adapter = priv->adapter;
 221         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 222
 223         /* Set country code */
 224         domain_info->country_code[0] = priv->country_code[0];
 225         domain_info->country_code[1] = priv->country_code[1];
 226         domain_info->country_code[2] = ' ';
 227
 228         band = mwifiex_band_to_radio_type(adapter->config_bands);
 229         if (!wiphy->bands[band]) {
 230                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 231                 return -1;
 232         }
 233
 234         sband = wiphy->bands[band];
 235
 236         for (i = 0; i < sband->n_channels ; i++) {
 237                 ch = &sband->channels[i];
 238                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 239                         continue;
 240
 241                 if (!flag) {
 242                         flag = 1;
 243                         first_chan = (u32) ch->hw_value;
 244                         next_chan = first_chan;
 245                         max_pwr = ch->max_power;
 246                         no_of_parsed_chan = 1;
 247                         continue;
 248                 }
 249
 250                 if (ch->hw_value == next_chan + 1 &&
 251                                 ch->max_power == max_pwr) {
 252                         next_chan++;
 253                         no_of_parsed_chan++;
 254                 } else {
 255                         t = &domain_info->triplet[no_of_triplet];
 256                         t->chans.first_channel = first_chan;
 257                         t->chans.num_channels = no_of_parsed_chan;
 258                         t->chans.max_power = max_pwr;
 259                         no_of_triplet++;
 260                         first_chan = (u32) ch->hw_value;
 261                         next_chan = first_chan;
 262                         max_pwr = ch->max_power;
 263                         no_of_parsed_chan = 1;
 264                 }
 265         }
 266
 267         if (flag) {
 268                 t = &domain_info->triplet[no_of_triplet];
 269                 t->chans.first_channel = first_chan;
 270                 t->chans.num_channels = no_of_parsed_chan;
 271                 t->chans.max_power = max_pwr;
 272                 no_of_triplet++;
 273         }
 274
 275         domain_info->no_of_triplet = no_of_triplet;
 276
 277         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 278                                      HostCmd_ACT_GEN_SET, 0, NULL)) {
 279                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 280                 return -1;
 281         }
 282
 283         return 0;
 284 }
 285
 286 /*
 287  * CFG802.11 regulatory domain callback function.
 288  *
 289  * This function is called when the regulatory domain is changed due to the
 290  * following reasons -
 291  *      - Set by driver
 292  *      - Set by system core
 293  *      - Set by user
 294  *      - Set bt Country IE
 295  */
 296 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 297                 struct regulatory_request *request)
 298 {
 299         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 300
 301         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 302                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 303
 304         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 305
 306         switch (request->initiator) {
 307         case NL80211_REGDOM_SET_BY_DRIVER:
 308         case NL80211_REGDOM_SET_BY_CORE:
 309         case NL80211_REGDOM_SET_BY_USER:
 310                 break;
 311                 /* Todo: apply driver specific changes in channel flags based
 312                    on the request initiator if necessary. */
 313         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 314                 break;
 315         }
 316         mwifiex_send_domain_info_cmd_fw(wiphy);
 317
 318         return 0;
 319 }
 320
 321 /*
 322  * This function sets the RF channel.
 323  *
 324  * This function creates multiple IOCTL requests, populates them accordingly
 325  * and issues them to set the band/channel and frequency.
 326  */
 327 static int
 328 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 329                        struct ieee80211_channel *chan,
 330                        enum nl80211_channel_type channel_type)
 331 {
 332         struct mwifiex_chan_freq_power cfp;
 333         struct mwifiex_ds_band_cfg band_cfg;
 334         u32 config_bands = 0;
 335         struct wiphy *wiphy = priv->wdev->wiphy;
 336
 337         if (chan) {
 338                 memset(&band_cfg, 0, sizeof(band_cfg));
 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                 if (priv->bss_mode == NL80211_IFTYPE_STATION
 345                     || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
 346                         band_cfg.config_bands = config_bands;
 347                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 348                         band_cfg.config_bands = config_bands;
 349                         band_cfg.adhoc_start_band = config_bands;
 350                 }
 351
 352                 band_cfg.sec_chan_offset =
 353                         mwifiex_cfg80211_channel_type_to_mwifiex_channels
 354                         (channel_type);
 355
 356                 if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
 357                         return -EFAULT;
 358
 359                 mwifiex_send_domain_info_cmd_fw(wiphy);
 360         }
 361
 362         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 363                 "mode %d\n", config_bands, band_cfg.sec_chan_offset,
 364                 priv->bss_mode);
 365         if (!chan)
 366                 return 0;
 367
 368         memset(&cfp, 0, sizeof(cfp));
 369         cfp.freq = chan->center_freq;
 370         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 371
 372         if (mwifiex_bss_set_channel(priv, &cfp))
 373                 return -EFAULT;
 374
 375         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 376 }
 377
 378 /*
 379  * CFG802.11 operation handler to set channel.
 380  *
 381  * This function can only be used when station is not connected.
 382  */
 383 static int
 384 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 385                              struct ieee80211_channel *chan,
 386                              enum nl80211_channel_type channel_type)
 387 {
 388         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 389
 390         if (priv->media_connected) {
 391                 wiphy_err(wiphy, "This setting is valid only when station "
 392                                 "is not connected\n");
 393                 return -EINVAL;
 394         }
 395
 396         return mwifiex_set_rf_channel(priv, chan, channel_type);
 397 }
 398
 399 /*
 400  * This function sets the fragmentation threshold.
 401  *
 402  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 403  * and MWIFIEX_FRAG_MAX_VALUE.
 404  */
 405 static int
 406 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 407 {
 408         int ret;
 409
 410         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 411             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 412                 return -EINVAL;
 413
 414         /* Send request to firmware */
 415         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 416                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 417                                     &frag_thr);
 418
 419         return ret;
 420 }
 421
 422 /*
 423  * This function sets the RTS threshold.
 424
 425  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 426  * and MWIFIEX_RTS_MAX_VALUE.
 427  */
 428 static int
 429 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 430 {
 431         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 432                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 433
 434         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 435                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 436                                     &rts_thr);
 437 }
 438
 439 /*
 440  * CFG802.11 operation handler to set wiphy parameters.
 441  *
 442  * This function can be used to set the RTS threshold and the
 443  * Fragmentation threshold of the driver.
 444  */
 445 static int
 446 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 447 {
 448         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 449         int ret = 0;
 450
 451         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 452                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 453                 if (ret)
 454                         return ret;
 455         }
 456
 457         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 458                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 459
 460         return ret;
 461 }
 462
 463 /*
 464  * CFG802.11 operation handler to change interface type.
 465  */
 466 static int
 467 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 468                                      struct net_device *dev,
 469                                      enum nl80211_iftype type, u32 *flags,
 470                                      struct vif_params *params)
 471 {
 472         int ret;
 473         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 474
 475         if (priv->bss_mode == type) {
 476                 wiphy_warn(wiphy, "already set to required type\n");
 477                 return 0;
 478         }
 479
 480         priv->bss_mode = type;
 481
 482         switch (type) {
 483         case NL80211_IFTYPE_ADHOC:
 484                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 485                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 486                 break;
 487         case NL80211_IFTYPE_STATION:
 488                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 489                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 490                 break;
 491         case NL80211_IFTYPE_UNSPECIFIED:
 492                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 493                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 494                 return 0;
 495         default:
 496                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 497                 return -EINVAL;
 498         }
 499
 500         mwifiex_deauthenticate(priv, NULL);
 501
 502         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 503
 504         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 505                                     HostCmd_ACT_GEN_SET, 0, NULL);
 506
 507         return ret;
 508 }
 509
 510 /*
 511  * This function dumps the station information on a buffer.
 512  *
 513  * The following information are shown -
 514  *      - Total bytes transmitted
 515  *      - Total bytes received
 516  *      - Total packets transmitted
 517  *      - Total packets received
 518  *      - Signal quality level
 519  *      - Transmission rate
 520  */
 521 static int
 522 mwifiex_dump_station_info(struct mwifiex_private *priv,
 523                           struct station_info *sinfo)
 524 {
 525         struct mwifiex_ds_get_signal signal;
 526         struct mwifiex_rate_cfg rate;
 527         int ret = 0;
 528
 529         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 530                 STATION_INFO_RX_PACKETS |
 531                 STATION_INFO_TX_PACKETS
 532                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 533
 534         /* Get signal information from the firmware */
 535         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 536         if (mwifiex_get_signal_info(priv, &signal)) {
 537                 dev_err(priv->adapter->dev, "getting signal information\n");
 538                 ret = -EFAULT;
 539         }
 540
 541         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 542                 dev_err(priv->adapter->dev, "getting data rate\n");
 543                 ret = -EFAULT;
 544         }
 545
 546         sinfo->rx_bytes = priv->stats.rx_bytes;
 547         sinfo->tx_bytes = priv->stats.tx_bytes;
 548         sinfo->rx_packets = priv->stats.rx_packets;
 549         sinfo->tx_packets = priv->stats.tx_packets;
 550         sinfo->signal = priv->w_stats.qual.level;
 551         sinfo->txrate.legacy = rate.rate;
 552
 553         return ret;
 554 }
 555
 556 /*
 557  * CFG802.11 operation handler to get station information.
 558  *
 559  * This function only works in connected mode, and dumps the
 560  * requested station information, if available.
 561  */
 562 static int
 563 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 564                              u8 *mac, struct station_info *sinfo)
 565 {
 566         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 567
 568         mwifiex_dump_station_info(priv, sinfo);
 569
 570         if (!priv->media_connected)
 571                 return -ENOENT;
 572         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 573                 return -ENOENT;
 574
 575         return mwifiex_dump_station_info(priv, sinfo);
 576 }
 577
 578 /* Supported rates to be advertised to the cfg80211 */
 579
 580 static struct ieee80211_rate mwifiex_rates[] = {
 581         {.bitrate = 10, .hw_value = 2, },
 582         {.bitrate = 20, .hw_value = 4, },
 583         {.bitrate = 55, .hw_value = 11, },
 584         {.bitrate = 110, .hw_value = 22, },
 585         {.bitrate = 220, .hw_value = 44, },
 586         {.bitrate = 60, .hw_value = 12, },
 587         {.bitrate = 90, .hw_value = 18, },
 588         {.bitrate = 120, .hw_value = 24, },
 589         {.bitrate = 180, .hw_value = 36, },
 590         {.bitrate = 240, .hw_value = 48, },
 591         {.bitrate = 360, .hw_value = 72, },
 592         {.bitrate = 480, .hw_value = 96, },
 593         {.bitrate = 540, .hw_value = 108, },
 594         {.bitrate = 720, .hw_value = 144, },
 595 };
 596
 597 /* Channel definitions to be advertised to cfg80211 */
 598
 599 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 600         {.center_freq = 2412, .hw_value = 1, },
 601         {.center_freq = 2417, .hw_value = 2, },
 602         {.center_freq = 2422, .hw_value = 3, },
 603         {.center_freq = 2427, .hw_value = 4, },
 604         {.center_freq = 2432, .hw_value = 5, },
 605         {.center_freq = 2437, .hw_value = 6, },
 606         {.center_freq = 2442, .hw_value = 7, },
 607         {.center_freq = 2447, .hw_value = 8, },
 608         {.center_freq = 2452, .hw_value = 9, },
 609         {.center_freq = 2457, .hw_value = 10, },
 610         {.center_freq = 2462, .hw_value = 11, },
 611         {.center_freq = 2467, .hw_value = 12, },
 612         {.center_freq = 2472, .hw_value = 13, },
 613         {.center_freq = 2484, .hw_value = 14, },
 614 };
 615
 616 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 617         .channels = mwifiex_channels_2ghz,
 618         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 619         .bitrates = mwifiex_rates,
 620         .n_bitrates = 14,
 621 };
 622
 623 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 624         {.center_freq = 5040, .hw_value = 8, },
 625         {.center_freq = 5060, .hw_value = 12, },
 626         {.center_freq = 5080, .hw_value = 16, },
 627         {.center_freq = 5170, .hw_value = 34, },
 628         {.center_freq = 5190, .hw_value = 38, },
 629         {.center_freq = 5210, .hw_value = 42, },
 630         {.center_freq = 5230, .hw_value = 46, },
 631         {.center_freq = 5180, .hw_value = 36, },
 632         {.center_freq = 5200, .hw_value = 40, },
 633         {.center_freq = 5220, .hw_value = 44, },
 634         {.center_freq = 5240, .hw_value = 48, },
 635         {.center_freq = 5260, .hw_value = 52, },
 636         {.center_freq = 5280, .hw_value = 56, },
 637         {.center_freq = 5300, .hw_value = 60, },
 638         {.center_freq = 5320, .hw_value = 64, },
 639         {.center_freq = 5500, .hw_value = 100, },
 640         {.center_freq = 5520, .hw_value = 104, },
 641         {.center_freq = 5540, .hw_value = 108, },
 642         {.center_freq = 5560, .hw_value = 112, },
 643         {.center_freq = 5580, .hw_value = 116, },
 644         {.center_freq = 5600, .hw_value = 120, },
 645         {.center_freq = 5620, .hw_value = 124, },
 646         {.center_freq = 5640, .hw_value = 128, },
 647         {.center_freq = 5660, .hw_value = 132, },
 648         {.center_freq = 5680, .hw_value = 136, },
 649         {.center_freq = 5700, .hw_value = 140, },
 650         {.center_freq = 5745, .hw_value = 149, },
 651         {.center_freq = 5765, .hw_value = 153, },
 652         {.center_freq = 5785, .hw_value = 157, },
 653         {.center_freq = 5805, .hw_value = 161, },
 654         {.center_freq = 5825, .hw_value = 165, },
 655 };
 656
 657 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 658         .channels = mwifiex_channels_5ghz,
 659         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 660         .bitrates = mwifiex_rates - 4,
 661         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 662 };
 663
 664
 665 /* Supported crypto cipher suits to be advertised to cfg80211 */
 666
 667 static const u32 mwifiex_cipher_suites[] = {
 668         WLAN_CIPHER_SUITE_WEP40,
 669         WLAN_CIPHER_SUITE_WEP104,
 670         WLAN_CIPHER_SUITE_TKIP,
 671         WLAN_CIPHER_SUITE_CCMP,
 672 };
 673
 674 /*
 675  * CFG802.11 operation handler for disconnection request.
 676  *
 677  * This function does not work when there is already a disconnection
 678  * procedure going on.
 679  */
 680 static int
 681 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 682                             u16 reason_code)
 683 {
 684         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 685
 686         if (priv->disconnect)
 687                 return -EBUSY;
 688
 689         priv->disconnect = 1;
 690         if (mwifiex_deauthenticate(priv, NULL))
 691                 return -EFAULT;
 692
 693         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 694                 " reason code %d\n", priv->cfg_bssid, reason_code);
 695
 696         queue_work(priv->workqueue, &priv->cfg_workqueue);
 697
 698         return 0;
 699 }
 700
 701 /*
 702  * This function informs the CFG802.11 subsystem of a new IBSS.
 703  *
 704  * The following information are sent to the CFG802.11 subsystem
 705  * to register the new IBSS. If we do not register the new IBSS,
 706  * a kernel panic will result.
 707  *      - SSID
 708  *      - SSID length
 709  *      - BSSID
 710  *      - Channel
 711  */
 712 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 713 {
 714         struct ieee80211_channel *chan;
 715         struct mwifiex_bss_info bss_info;
 716         int ie_len;
 717         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 718
 719         if (mwifiex_get_bss_info(priv, &bss_info))
 720                 return -1;
 721
 722         ie_buf[0] = WLAN_EID_SSID;
 723         ie_buf[1] = bss_info.ssid.ssid_len;
 724
 725         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 726                         &bss_info.ssid.ssid,
 727                         bss_info.ssid.ssid_len);
 728         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 729
 730         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 731                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 732                                                 priv->curr_bss_params.band));
 733
 734         cfg80211_inform_bss(priv->wdev->wiphy, chan,
 735                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 736                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 737         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 738
 739         return 0;
 740 }
 741
 742 /*
 743  * This function informs the CFG802.11 subsystem of a new BSS connection.
 744  *
 745  * The following information are sent to the CFG802.11 subsystem
 746  * to register the new BSS connection. If we do not register the new BSS,
 747  * a kernel panic will result.
 748  *      - MAC address
 749  *      - Capabilities
 750  *      - Beacon period
 751  *      - RSSI value
 752  *      - Channel
 753  *      - Supported rates IE
 754  *      - Extended capabilities IE
 755  *      - DS parameter set IE
 756  *      - HT Capability IE
 757  *      - Vendor Specific IE (221)
 758  *      - WPA IE
 759  *      - RSN IE
 760  */
 761 static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
 762                                                struct mwifiex_802_11_ssid *ssid)
 763 {
 764         struct mwifiex_scan_resp scan_resp;
 765         struct mwifiex_bssdescriptor *scan_table;
 766         int i, j;
 767         struct ieee80211_channel *chan;
 768         u8 *ie, *ie_buf;
 769         u32 ie_len;
 770         u8 *beacon;
 771         int beacon_size;
 772         u8 element_id, element_len;
 773
 774         memset(&scan_resp, 0, sizeof(scan_resp));
 775         scan_resp.scan_table = (u8 *) priv->adapter->scan_table;
 776         scan_resp.num_in_scan_table = priv->adapter->num_in_scan_table;
 777
 778 #define MAX_IE_BUF      2048
 779         ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
 780         if (!ie_buf) {
 781                 dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
 782                                                 __func__);
 783                 return -ENOMEM;
 784         }
 785
 786         scan_table = (struct mwifiex_bssdescriptor *) scan_resp.scan_table;
 787         for (i = 0; i < scan_resp.num_in_scan_table; i++) {
 788                 if (ssid) {
 789                         /* Inform specific BSS only */
 790                         if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
 791                                            ssid->ssid_len))
 792                                 continue;
 793                 }
 794                 memset(ie_buf, 0, MAX_IE_BUF);
 795                 ie_buf[0] = WLAN_EID_SSID;
 796                 ie_buf[1] = scan_table[i].ssid.ssid_len;
 797                 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 798                        scan_table[i].ssid.ssid, ie_buf[1]);
 799
 800                 ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
 801                 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 802
 803                 ie[0] = WLAN_EID_SUPP_RATES;
 804
 805                 for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
 806                         if (!scan_table[i].supported_rates[j])
 807                                 break;
 808                         else
 809                                 ie[j + sizeof(struct ieee_types_header)] =
 810                                         scan_table[i].supported_rates[j];
 811                 }
 812
 813                 ie[1] = j;
 814                 ie_len += ie[1] + sizeof(struct ieee_types_header);
 815
 816                 beacon = scan_table[i].beacon_buf;
 817                 beacon_size = scan_table[i].beacon_buf_size;
 818
 819                 /* Skip time stamp, beacon interval and capability */
 820
 821                 if (beacon) {
 822                         beacon += sizeof(scan_table[i].beacon_period)
 823                                 + sizeof(scan_table[i].time_stamp) +
 824                                 +sizeof(scan_table[i].cap_info_bitmap);
 825
 826                         beacon_size -= sizeof(scan_table[i].beacon_period)
 827                                 + sizeof(scan_table[i].time_stamp)
 828                                 + sizeof(scan_table[i].cap_info_bitmap);
 829                 }
 830
 831                 while (beacon_size >= sizeof(struct ieee_types_header)) {
 832                         ie = ie_buf + ie_len;
 833                         element_id = *beacon;
 834                         element_len = *(beacon + 1);
 835                         if (beacon_size < (int) element_len +
 836                             sizeof(struct ieee_types_header)) {
 837                                 dev_err(priv->adapter->dev, "%s: in processing"
 838                                         " IE, bytes left < IE length\n",
 839                                         __func__);
 840                                 break;
 841                         }
 842                         switch (element_id) {
 843                         case WLAN_EID_EXT_CAPABILITY:
 844                         case WLAN_EID_DS_PARAMS:
 845                         case WLAN_EID_HT_CAPABILITY:
 846                         case WLAN_EID_VENDOR_SPECIFIC:
 847                         case WLAN_EID_RSN:
 848                         case WLAN_EID_BSS_AC_ACCESS_DELAY:
 849                                 ie[0] = element_id;
 850                                 ie[1] = element_len;
 851                                 memcpy(&ie[sizeof(struct ieee_types_header)],
 852                                        (u8 *) beacon
 853                                        + sizeof(struct ieee_types_header),
 854                                        element_len);
 855                                 ie_len += ie[1] +
 856                                         sizeof(struct ieee_types_header);
 857                                 break;
 858                         default:
 859                                 break;
 860                         }
 861                         beacon += element_len +
 862                                         sizeof(struct ieee_types_header);
 863                         beacon_size -= element_len +
 864                                         sizeof(struct ieee_types_header);
 865                 }
 866                 chan = ieee80211_get_channel(priv->wdev->wiphy,
 867                                                 scan_table[i].freq);
 868                 cfg80211_inform_bss(priv->wdev->wiphy, chan,
 869                                         scan_table[i].mac_address,
 870                                         0, scan_table[i].cap_info_bitmap,
 871                                         scan_table[i].beacon_period,
 872                                         ie_buf, ie_len,
 873                                         scan_table[i].rssi, GFP_KERNEL);
 874         }
 875
 876         kfree(ie_buf);
 877         return 0;
 878 }
 879
 880 /*
 881  * This function connects with a BSS.
 882  *
 883  * This function handles both Infra and Ad-Hoc modes. It also performs
 884  * validity checking on the provided parameters, disconnects from the
 885  * current BSS (if any), sets up the association/scan parameters,
 886  * including security settings, and performs specific SSID scan before
 887  * trying to connect.
 888  *
 889  * For Infra mode, the function returns failure if the specified SSID
 890  * is not found in scan table. However, for Ad-Hoc mode, it can create
 891  * the IBSS if it does not exist. On successful completion in either case,
 892  * the function notifies the CFG802.11 subsystem of the new BSS connection,
 893  * otherwise the kernel will panic.
 894  */
 895 static int
 896 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 897                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 898                        struct cfg80211_connect_params *sme, bool privacy)
 899 {
 900         struct mwifiex_802_11_ssid req_ssid;
 901         struct mwifiex_ssid_bssid ssid_bssid;
 902         int ret, auth_type = 0;
 903
 904         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 905         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 906
 907         req_ssid.ssid_len = ssid_len;
 908         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 909                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 910                 return -EINVAL;
 911         }
 912
 913         memcpy(req_ssid.ssid, ssid, ssid_len);
 914         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 915                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 916                 return -EINVAL;
 917         }
 918
 919         /* disconnect before try to associate */
 920         mwifiex_deauthenticate(priv, NULL);
 921
 922         if (channel)
 923                 ret = mwifiex_set_rf_channel(priv, channel,
 924                                 mwifiex_channels_to_cfg80211_channel_type
 925                                 (priv->adapter->chan_offset));
 926
 927         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 928
 929         if (mode == NL80211_IFTYPE_ADHOC) {
 930                 /* "privacy" is set only for ad-hoc mode */
 931                 if (privacy) {
 932                         /*
 933                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 934                          * the firmware can find a matching network from the
 935                          * scan. The cfg80211 does not give us the encryption
 936                          * mode at this stage so just setting it to WEP here.
 937                          */
 938                         priv->sec_info.encryption_mode =
 939                                         WLAN_CIPHER_SUITE_WEP104;
 940                         priv->sec_info.authentication_mode =
 941                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 942                 }
 943
 944                 goto done;
 945         }
 946
 947         /* Now handle infra mode. "sme" is valid for infra mode only */
 948         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 949                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 950                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 951         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 952                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 953
 954         if (sme->crypto.n_ciphers_pairwise) {
 955                 priv->sec_info.encryption_mode =
 956                                                 sme->crypto.ciphers_pairwise[0];
 957                 priv->sec_info.authentication_mode = auth_type;
 958         }
 959
 960         if (sme->crypto.cipher_group) {
 961                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 962                 priv->sec_info.authentication_mode = auth_type;
 963         }
 964         if (sme->ie)
 965                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 966
 967         if (sme->key) {
 968                 if (mwifiex_is_alg_wep(0) | mwifiex_is_alg_wep(0)) {
 969                         dev_dbg(priv->adapter->dev,
 970                                 "info: setting wep encryption"
 971                                 " with key len %d\n", sme->key_len);
 972                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 973                                                         sme->key_idx, 0);
 974                 }
 975         }
 976 done:
 977         /* Do specific SSID scanning */
 978         if (mwifiex_request_scan(priv, &req_ssid)) {
 979                 dev_err(priv->adapter->dev, "scan error\n");
 980                 return -EFAULT;
 981         }
 982
 983
 984         memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
 985
 986         if (mode != NL80211_IFTYPE_ADHOC) {
 987                 if (mwifiex_find_best_bss(priv, &ssid_bssid))
 988                         return -EFAULT;
 989                 /* Inform the BSS information to kernel, otherwise
 990                  * kernel will give a panic after successful assoc */
 991                 if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
 992                         return -EFAULT;
 993         }
 994
 995         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
 996                (char *) req_ssid.ssid, ssid_bssid.bssid);
 997
 998         memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
 999
1000         /* Connect to BSS by ESSID */
1001         memset(&ssid_bssid.bssid, 0, ETH_ALEN);
1002
1003         if (!netif_queue_stopped(priv->netdev))
1004                 netif_stop_queue(priv->netdev);
1005
1006         if (mwifiex_bss_start(priv, &ssid_bssid))
1007                 return -EFAULT;
1008
1009         if (mode == NL80211_IFTYPE_ADHOC) {
1010                 /* Inform the BSS information to kernel, otherwise
1011                  * kernel will give a panic after successful assoc */
1012                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1013                         return -EFAULT;
1014         }
1015
1016         return ret;
1017 }
1018
1019 /*
1020  * CFG802.11 operation handler for association request.
1021  *
1022  * This function does not work when the current mode is set to Ad-Hoc, or
1023  * when there is already an association procedure going on. The given BSS
1024  * information is used to associate.
1025  */
1026 static int
1027 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1028                          struct cfg80211_connect_params *sme)
1029 {
1030         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1031         int ret = 0;
1032
1033         if (priv->assoc_request)
1034                 return -EBUSY;
1035
1036         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1037                 wiphy_err(wiphy, "received infra assoc request "
1038                                 "when station is in ibss mode\n");
1039                 goto done;
1040         }
1041
1042         priv->assoc_request = -EINPROGRESS;
1043
1044         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1045                (char *) sme->ssid, sme->bssid);
1046
1047         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1048                                      priv->bss_mode, sme->channel, sme, 0);
1049
1050         priv->assoc_request = 1;
1051 done:
1052         priv->assoc_result = ret;
1053         queue_work(priv->workqueue, &priv->cfg_workqueue);
1054         return ret;
1055 }
1056
1057 /*
1058  * CFG802.11 operation handler to join an IBSS.
1059  *
1060  * This function does not work in any mode other than Ad-Hoc, or if
1061  * a join operation is already in progress.
1062  */
1063 static int
1064 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1065                            struct cfg80211_ibss_params *params)
1066 {
1067         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1068         int ret = 0;
1069
1070         if (priv->ibss_join_request)
1071                 return -EBUSY;
1072
1073         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1074                 wiphy_err(wiphy, "request to join ibss received "
1075                                 "when station is not in ibss mode\n");
1076                 goto done;
1077         }
1078
1079         priv->ibss_join_request = -EINPROGRESS;
1080
1081         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1082                (char *) params->ssid, params->bssid);
1083
1084         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1085                                 params->bssid, priv->bss_mode,
1086                                 params->channel, NULL, params->privacy);
1087
1088         priv->ibss_join_request = 1;
1089 done:
1090         priv->ibss_join_result = ret;
1091         queue_work(priv->workqueue, &priv->cfg_workqueue);
1092         return ret;
1093 }
1094
1095 /*
1096  * CFG802.11 operation handler to leave an IBSS.
1097  *
1098  * This function does not work if a leave operation is
1099  * already in progress.
1100  */
1101 static int
1102 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1103 {
1104         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1105
1106         if (priv->disconnect)
1107                 return -EBUSY;
1108
1109         priv->disconnect = 1;
1110
1111         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1112                         priv->cfg_bssid);
1113         if (mwifiex_deauthenticate(priv, NULL))
1114                 return -EFAULT;
1115
1116         queue_work(priv->workqueue, &priv->cfg_workqueue);
1117
1118         return 0;
1119 }
1120
1121 /*
1122  * CFG802.11 operation handler for scan request.
1123  *
1124  * This function issues a scan request to the firmware based upon
1125  * the user specified scan configuration. On successfull completion,
1126  * it also informs the results.
1127  */
1128 static int
1129 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1130                       struct cfg80211_scan_request *request)
1131 {
1132         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1133
1134         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1135
1136         if (priv->scan_request && priv->scan_request != request)
1137                 return -EBUSY;
1138
1139         priv->scan_request = request;
1140
1141         queue_work(priv->workqueue, &priv->cfg_workqueue);
1142         return 0;
1143 }
1144
1145 /*
1146  * This function sets up the CFG802.11 specific HT capability fields
1147  * with default values.
1148  *
1149  * The following default values are set -
1150  *      - HT Supported = True
1151  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1152  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1153  *      - HT Capabilities supported by firmware
1154  *      - MCS information, Rx mask = 0xff
1155  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1156  */
1157 static void
1158 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1159                       struct mwifiex_private *priv)
1160 {
1161         int rx_mcs_supp;
1162         struct ieee80211_mcs_info mcs_set;
1163         u8 *mcs = (u8 *)&mcs_set;
1164         struct mwifiex_adapter *adapter = priv->adapter;
1165
1166         ht_info->ht_supported = true;
1167         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1168         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1169
1170         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1171
1172         /* Fill HT capability information */
1173         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1174                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1175         else
1176                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1177
1178         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1179                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1180         else
1181                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1182
1183         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1184                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1185         else
1186                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1187
1188         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1189                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1190         else
1191                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1192
1193         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1194                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1195         else
1196                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1197
1198         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1199         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1200
1201         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1202         /* Set MCS for 1x1 */
1203         memset(mcs, 0xff, rx_mcs_supp);
1204         /* Clear all the other values */
1205         memset(&mcs[rx_mcs_supp], 0,
1206                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1207         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1208                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1209                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1210                 SETHT_MCS32(mcs_set.rx_mask);
1211
1212         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1213
1214         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1215 }
1216
1217 /* station cfg80211 operations */
1218 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1219         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1220         .scan = mwifiex_cfg80211_scan,
1221         .connect = mwifiex_cfg80211_connect,
1222         .disconnect = mwifiex_cfg80211_disconnect,
1223         .get_station = mwifiex_cfg80211_get_station,
1224         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1225         .set_channel = mwifiex_cfg80211_set_channel,
1226         .join_ibss = mwifiex_cfg80211_join_ibss,
1227         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1228         .add_key = mwifiex_cfg80211_add_key,
1229         .del_key = mwifiex_cfg80211_del_key,
1230         .set_default_key = mwifiex_cfg80211_set_default_key,
1231         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1232         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1233 };
1234
1235 /*
1236  * This function registers the device with CFG802.11 subsystem.
1237  *
1238  * The function creates the wireless device/wiphy, populates it with
1239  * default parameters and handler function pointers, and finally
1240  * registers the device.
1241  */
1242 int mwifiex_register_cfg80211(struct net_device *dev, u8 *mac,
1243                               struct mwifiex_private *priv)
1244 {
1245         int ret;
1246         void *wdev_priv;
1247         struct wireless_dev *wdev;
1248
1249         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1250         if (!wdev) {
1251                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1252                                                 __func__);
1253                 return -ENOMEM;
1254         }
1255         wdev->wiphy =
1256                 wiphy_new(&mwifiex_cfg80211_ops,
1257                           sizeof(struct mwifiex_private *));
1258         if (!wdev->wiphy) {
1259                 kfree(wdev);
1260                 return -ENOMEM;
1261         }
1262         wdev->iftype = NL80211_IFTYPE_STATION;
1263         wdev->wiphy->max_scan_ssids = 10;
1264         wdev->wiphy->interface_modes =
1265                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1266
1267         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1268         mwifiex_setup_ht_caps(
1269                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1270
1271         if (priv->adapter->config_bands & BAND_A) {
1272                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1273                 mwifiex_setup_ht_caps(
1274                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1275         } else {
1276                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1277         }
1278
1279         /* Initialize cipher suits */
1280         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1281         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1282
1283         memcpy(wdev->wiphy->perm_addr, mac, 6);
1284         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1285
1286         /* We are using custom domains */
1287         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1288
1289         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1290
1291         /* Set struct mwifiex_private pointer in wiphy_priv */
1292         wdev_priv = wiphy_priv(wdev->wiphy);
1293
1294         *(unsigned long *) wdev_priv = (unsigned long) priv;
1295
1296         ret = wiphy_register(wdev->wiphy);
1297         if (ret < 0) {
1298                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1299                                                 __func__);
1300                 wiphy_free(wdev->wiphy);
1301                 kfree(wdev);
1302                 return ret;
1303         } else {
1304                 dev_dbg(priv->adapter->dev,
1305                                 "info: successfully registered wiphy device\n");
1306         }
1307
1308         dev_net_set(dev, wiphy_net(wdev->wiphy));
1309         dev->ieee80211_ptr = wdev;
1310         memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
1311         memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
1312         SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
1313         priv->wdev = wdev;
1314
1315         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1316         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1317         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1318
1319         return ret;
1320 }
1321
1322 /*
1323  * This function handles the result of different pending network operations.
1324  *
1325  * The following operations are handled and CFG802.11 subsystem is
1326  * notified accordingly -
1327  *      - Scan request completion
1328  *      - Association request completion
1329  *      - IBSS join request completion
1330  *      - Disconnect request completion
1331  */
1332 void
1333 mwifiex_cfg80211_results(struct work_struct *work)
1334 {
1335         struct mwifiex_private *priv =
1336                 container_of(work, struct mwifiex_private, cfg_workqueue);
1337         struct mwifiex_user_scan_cfg *scan_req;
1338         int ret = 0, i;
1339         struct ieee80211_channel *chan;
1340
1341         if (priv->scan_request) {
1342                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1343                                    GFP_KERNEL);
1344                 if (!scan_req) {
1345                         dev_err(priv->adapter->dev, "failed to alloc "
1346                                                     "scan_req\n");
1347                         return;
1348                 }
1349                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1350                         memcpy(scan_req->ssid_list[i].ssid,
1351                                         priv->scan_request->ssids[i].ssid,
1352                                         priv->scan_request->ssids[i].ssid_len);
1353                         scan_req->ssid_list[i].max_len =
1354                                         priv->scan_request->ssids[i].ssid_len;
1355                 }
1356                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1357                         chan = priv->scan_request->channels[i];
1358                         scan_req->chan_list[i].chan_number = chan->hw_value;
1359                         scan_req->chan_list[i].radio_type = chan->band;
1360                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1361                                 scan_req->chan_list[i].scan_type =
1362                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1363                         else
1364                                 scan_req->chan_list[i].scan_type =
1365                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1366                         scan_req->chan_list[i].scan_time = 0;
1367                 }
1368                 if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
1369                         ret = -EFAULT;
1370                         goto done;
1371                 }
1372                 if (mwifiex_inform_bss_from_scan_result(priv, NULL))
1373                         ret = -EFAULT;
1374 done:
1375                 priv->scan_result_status = ret;
1376                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1377                                                         __func__);
1378                 cfg80211_scan_done(priv->scan_request,
1379                                 (priv->scan_result_status < 0));
1380                 priv->scan_request = NULL;
1381                 kfree(scan_req);
1382         }
1383
1384         if (priv->assoc_request == 1) {
1385                 if (!priv->assoc_result) {
1386                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1387                                                 NULL, 0, NULL, 0,
1388                                                 WLAN_STATUS_SUCCESS,
1389                                                 GFP_KERNEL);
1390                         dev_dbg(priv->adapter->dev,
1391                                 "info: associated to bssid %pM successfully\n",
1392                                priv->cfg_bssid);
1393                 } else {
1394                         dev_dbg(priv->adapter->dev,
1395                                 "info: association to bssid %pM failed\n",
1396                                priv->cfg_bssid);
1397                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1398                 }
1399                 priv->assoc_request = 0;
1400                 priv->assoc_result = 0;
1401         }
1402
1403         if (priv->ibss_join_request == 1) {
1404                 if (!priv->ibss_join_result) {
1405                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1406                                              GFP_KERNEL);
1407                         dev_dbg(priv->adapter->dev,
1408                                 "info: joined/created adhoc network with bssid"
1409                                         " %pM successfully\n", priv->cfg_bssid);
1410                 } else {
1411                         dev_dbg(priv->adapter->dev,
1412                                 "info: failed creating/joining adhoc network\n");
1413                 }
1414                 priv->ibss_join_request = 0;
1415                 priv->ibss_join_result = 0;
1416         }
1417
1418         if (priv->disconnect) {
1419                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1420                 priv->disconnect = 0;
1421         }
1422 }