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         int alg = 0;
  81
  82         switch (cipher) {
  83         case WLAN_CIPHER_SUITE_WEP40:
  84         case WLAN_CIPHER_SUITE_WEP104:
  85                 alg = 1;
  86                 break;
  87         default:
  88                 alg = 0;
  89                 break;
  90         }
  91         return alg;
  92 }
  93
  94 /*
  95  * This function retrieves the private structure from kernel wiphy structure.
  96  */
  97 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
  98 {
  99         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 100 }
 101
 102 /*
 103  * CFG802.11 operation handler to delete a network key.
 104  */
 105 static int
 106 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 107                          u8 key_index, bool pairwise, const u8 *mac_addr)
 108 {
 109         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 110
 111         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
 112                 wiphy_err(wiphy, "deleting the crypto keys\n");
 113                 return -EFAULT;
 114         }
 115
 116         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 117         return 0;
 118 }
 119
 120 /*
 121  * CFG802.11 operation handler to set Tx power.
 122  */
 123 static int
 124 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 125                               enum nl80211_tx_power_setting type,
 126                               int dbm)
 127 {
 128         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 129         struct mwifiex_power_cfg power_cfg;
 130
 131         if (type == NL80211_TX_POWER_FIXED) {
 132                 power_cfg.is_power_auto = 0;
 133                 power_cfg.power_level = dbm;
 134         } else {
 135                 power_cfg.is_power_auto = 1;
 136         }
 137
 138         return mwifiex_set_tx_power(priv, &power_cfg);
 139 }
 140
 141 /*
 142  * CFG802.11 operation handler to set Power Save option.
 143  *
 144  * The timeout value, if provided, is currently ignored.
 145  */
 146 static int
 147 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 148                                 struct net_device *dev,
 149                                 bool enabled, int timeout)
 150 {
 151         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 152         u32 ps_mode;
 153
 154         if (timeout)
 155                 wiphy_dbg(wiphy,
 156                         "info: ignoring the timeout value"
 157                         " for IEEE power save\n");
 158
 159         ps_mode = enabled;
 160
 161         return mwifiex_drv_set_power(priv, &ps_mode);
 162 }
 163
 164 /*
 165  * CFG802.11 operation handler to set the default network key.
 166  */
 167 static int
 168 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 169                                  u8 key_index, bool unicast,
 170                                  bool multicast)
 171 {
 172         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 173
 174         /* Return if WEP key not configured */
 175         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 176                 return 0;
 177
 178         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 179                 wiphy_err(wiphy, "set default Tx key index\n");
 180                 return -EFAULT;
 181         }
 182
 183         return 0;
 184 }
 185
 186 /*
 187  * CFG802.11 operation handler to add a network key.
 188  */
 189 static int
 190 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 191                          u8 key_index, bool pairwise, const u8 *mac_addr,
 192                          struct key_params *params)
 193 {
 194         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 195
 196         if (mwifiex_set_encode(priv, params->key, params->key_len,
 197                                                         key_index, 0)) {
 198                 wiphy_err(wiphy, "crypto keys added\n");
 199                 return -EFAULT;
 200         }
 201
 202         return 0;
 203 }
 204
 205 /*
 206  * This function sends domain information to the firmware.
 207  *
 208  * The following information are passed to the firmware -
 209  *      - Country codes
 210  *      - Sub bands (first channel, number of channels, maximum Tx power)
 211  */
 212 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 213 {
 214         u8 no_of_triplet = 0;
 215         struct ieee80211_country_ie_triplet *t;
 216         u8 no_of_parsed_chan = 0;
 217         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 218         u8 i, flag = 0;
 219         enum ieee80211_band band;
 220         struct ieee80211_supported_band *sband;
 221         struct ieee80211_channel *ch;
 222         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 223         struct mwifiex_adapter *adapter = priv->adapter;
 224         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 225
 226         /* Set country code */
 227         domain_info->country_code[0] = priv->country_code[0];
 228         domain_info->country_code[1] = priv->country_code[1];
 229         domain_info->country_code[2] = ' ';
 230
 231         band = mwifiex_band_to_radio_type(adapter->config_bands);
 232         if (!wiphy->bands[band]) {
 233                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 234                 return -1;
 235         }
 236
 237         sband = wiphy->bands[band];
 238
 239         for (i = 0; i < sband->n_channels ; i++) {
 240                 ch = &sband->channels[i];
 241                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 242                         continue;
 243
 244                 if (!flag) {
 245                         flag = 1;
 246                         first_chan = (u32) ch->hw_value;
 247                         next_chan = first_chan;
 248                         max_pwr = ch->max_power;
 249                         no_of_parsed_chan = 1;
 250                         continue;
 251                 }
 252
 253                 if (ch->hw_value == next_chan + 1 &&
 254                                 ch->max_power == max_pwr) {
 255                         next_chan++;
 256                         no_of_parsed_chan++;
 257                 } else {
 258                         t = &domain_info->triplet[no_of_triplet];
 259                         t->chans.first_channel = first_chan;
 260                         t->chans.num_channels = no_of_parsed_chan;
 261                         t->chans.max_power = max_pwr;
 262                         no_of_triplet++;
 263                         first_chan = (u32) ch->hw_value;
 264                         next_chan = first_chan;
 265                         max_pwr = ch->max_power;
 266                         no_of_parsed_chan = 1;
 267                 }
 268         }
 269
 270         if (flag) {
 271                 t = &domain_info->triplet[no_of_triplet];
 272                 t->chans.first_channel = first_chan;
 273                 t->chans.num_channels = no_of_parsed_chan;
 274                 t->chans.max_power = max_pwr;
 275                 no_of_triplet++;
 276         }
 277
 278         domain_info->no_of_triplet = no_of_triplet;
 279
 280         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 281                                      HostCmd_ACT_GEN_SET, 0, NULL)) {
 282                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 283                 return -1;
 284         }
 285
 286         return 0;
 287 }
 288
 289 /*
 290  * CFG802.11 regulatory domain callback function.
 291  *
 292  * This function is called when the regulatory domain is changed due to the
 293  * following reasons -
 294  *      - Set by driver
 295  *      - Set by system core
 296  *      - Set by user
 297  *      - Set bt Country IE
 298  */
 299 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 300                 struct regulatory_request *request)
 301 {
 302         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 303
 304         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 305                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 306
 307         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 308
 309         switch (request->initiator) {
 310         case NL80211_REGDOM_SET_BY_DRIVER:
 311         case NL80211_REGDOM_SET_BY_CORE:
 312         case NL80211_REGDOM_SET_BY_USER:
 313                 break;
 314                 /* Todo: apply driver specific changes in channel flags based
 315                    on the request initiator if necessary. */
 316         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 317                 break;
 318         }
 319         mwifiex_send_domain_info_cmd_fw(wiphy);
 320
 321         return 0;
 322 }
 323
 324 /*
 325  * This function sets the RF channel.
 326  *
 327  * This function creates multiple IOCTL requests, populates them accordingly
 328  * and issues them to set the band/channel and frequency.
 329  */
 330 static int
 331 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 332                        struct ieee80211_channel *chan,
 333                        enum nl80211_channel_type channel_type)
 334 {
 335         struct mwifiex_chan_freq_power cfp;
 336         struct mwifiex_ds_band_cfg band_cfg;
 337         u32 config_bands = 0;
 338         struct wiphy *wiphy = priv->wdev->wiphy;
 339
 340         if (chan) {
 341                 memset(&band_cfg, 0, sizeof(band_cfg));
 342                 /* Set appropriate bands */
 343                 if (chan->band == IEEE80211_BAND_2GHZ)
 344                         config_bands = BAND_B | BAND_G | BAND_GN;
 345                 else
 346                         config_bands = BAND_AN | BAND_A;
 347                 if (priv->bss_mode == NL80211_IFTYPE_STATION
 348                     || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
 349                         band_cfg.config_bands = config_bands;
 350                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 351                         band_cfg.config_bands = config_bands;
 352                         band_cfg.adhoc_start_band = config_bands;
 353                 }
 354
 355                 band_cfg.sec_chan_offset =
 356                         mwifiex_cfg80211_channel_type_to_mwifiex_channels
 357                         (channel_type);
 358
 359                 if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
 360                         return -EFAULT;
 361
 362                 mwifiex_send_domain_info_cmd_fw(wiphy);
 363         }
 364
 365         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 366                 "mode %d\n", config_bands, band_cfg.sec_chan_offset,
 367                 priv->bss_mode);
 368         if (!chan)
 369                 return 0;
 370
 371         memset(&cfp, 0, sizeof(cfp));
 372         cfp.freq = chan->center_freq;
 373         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 374
 375         if (mwifiex_bss_set_channel(priv, &cfp))
 376                 return -EFAULT;
 377
 378         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 379 }
 380
 381 /*
 382  * CFG802.11 operation handler to set channel.
 383  *
 384  * This function can only be used when station is not connected.
 385  */
 386 static int
 387 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 388                              struct ieee80211_channel *chan,
 389                              enum nl80211_channel_type channel_type)
 390 {
 391         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 392
 393         if (priv->media_connected) {
 394                 wiphy_err(wiphy, "This setting is valid only when station "
 395                                 "is not connected\n");
 396                 return -EINVAL;
 397         }
 398
 399         return mwifiex_set_rf_channel(priv, chan, channel_type);
 400 }
 401
 402 /*
 403  * This function sets the fragmentation threshold.
 404  *
 405  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 406  * and MWIFIEX_FRAG_MAX_VALUE.
 407  */
 408 static int
 409 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 410 {
 411         int ret = 0;
 412
 413         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 414             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 415                 return -EINVAL;
 416
 417         /* Send request to firmware */
 418         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 419                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 420                                     &frag_thr);
 421
 422         return ret;
 423 }
 424
 425 /*
 426  * This function sets the RTS threshold.
 427
 428  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 429  * and MWIFIEX_RTS_MAX_VALUE.
 430  */
 431 static int
 432 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 433 {
 434         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 435                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 436
 437         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 438                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 439                                     &rts_thr);
 440 }
 441
 442 /*
 443  * CFG802.11 operation handler to set wiphy parameters.
 444  *
 445  * This function can be used to set the RTS threshold and the
 446  * Fragmentation threshold of the driver.
 447  */
 448 static int
 449 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 450 {
 451         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 452
 453         int ret = 0;
 454
 455         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 456                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 457                 if (ret)
 458                         return ret;
 459         }
 460
 461         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 462                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 463
 464         return ret;
 465 }
 466
 467 /*
 468  * CFG802.11 operation handler to change interface type.
 469  */
 470 static int
 471 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 472                                      struct net_device *dev,
 473                                      enum nl80211_iftype type, u32 *flags,
 474                                      struct vif_params *params)
 475 {
 476         int ret = 0;
 477         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 478
 479         if (priv->bss_mode == type) {
 480                 wiphy_warn(wiphy, "already set to required type\n");
 481                 return 0;
 482         }
 483
 484         priv->bss_mode = type;
 485
 486         switch (type) {
 487         case NL80211_IFTYPE_ADHOC:
 488                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 489                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 490                 break;
 491         case NL80211_IFTYPE_STATION:
 492                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 493                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 494                 break;
 495         case NL80211_IFTYPE_UNSPECIFIED:
 496                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 497                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 498                 return 0;
 499         default:
 500                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 501                 return -EINVAL;
 502         }
 503
 504         mwifiex_deauthenticate(priv, NULL);
 505
 506         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 507
 508         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 509                                     HostCmd_ACT_GEN_SET, 0, NULL);
 510
 511         return ret;
 512 }
 513
 514 /*
 515  * This function dumps the station information on a buffer.
 516  *
 517  * The following information are shown -
 518  *      - Total bytes transmitted
 519  *      - Total bytes received
 520  *      - Total packets transmitted
 521  *      - Total packets received
 522  *      - Signal quality level
 523  *      - Transmission rate
 524  */
 525 static int
 526 mwifiex_dump_station_info(struct mwifiex_private *priv,
 527                           struct station_info *sinfo)
 528 {
 529         struct mwifiex_ds_get_signal signal;
 530         struct mwifiex_rate_cfg rate;
 531         int ret = 0;
 532
 533         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 534                 STATION_INFO_RX_PACKETS |
 535                 STATION_INFO_TX_PACKETS
 536                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 537
 538         /* Get signal information from the firmware */
 539         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 540         if (mwifiex_get_signal_info(priv, &signal)) {
 541                 dev_err(priv->adapter->dev, "getting signal information\n");
 542                 ret = -EFAULT;
 543         }
 544
 545         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 546                 dev_err(priv->adapter->dev, "getting data rate\n");
 547                 ret = -EFAULT;
 548         }
 549
 550         sinfo->rx_bytes = priv->stats.rx_bytes;
 551         sinfo->tx_bytes = priv->stats.tx_bytes;
 552         sinfo->rx_packets = priv->stats.rx_packets;
 553         sinfo->tx_packets = priv->stats.tx_packets;
 554         sinfo->signal = priv->w_stats.qual.level;
 555         sinfo->txrate.legacy = rate.rate;
 556
 557         return ret;
 558 }
 559
 560 /*
 561  * CFG802.11 operation handler to get station information.
 562  *
 563  * This function only works in connected mode, and dumps the
 564  * requested station information, if available.
 565  */
 566 static int
 567 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 568                              u8 *mac, struct station_info *sinfo)
 569 {
 570         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 571
 572         mwifiex_dump_station_info(priv, sinfo);
 573
 574         if (!priv->media_connected)
 575                 return -ENOENT;
 576         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 577                 return -ENOENT;
 578
 579         return mwifiex_dump_station_info(priv, sinfo);
 580 }
 581
 582 /* Supported rates to be advertised to the cfg80211 */
 583
 584 static struct ieee80211_rate mwifiex_rates[] = {
 585         {.bitrate = 10, .hw_value = 2, },
 586         {.bitrate = 20, .hw_value = 4, },
 587         {.bitrate = 55, .hw_value = 11, },
 588         {.bitrate = 110, .hw_value = 22, },
 589         {.bitrate = 220, .hw_value = 44, },
 590         {.bitrate = 60, .hw_value = 12, },
 591         {.bitrate = 90, .hw_value = 18, },
 592         {.bitrate = 120, .hw_value = 24, },
 593         {.bitrate = 180, .hw_value = 36, },
 594         {.bitrate = 240, .hw_value = 48, },
 595         {.bitrate = 360, .hw_value = 72, },
 596         {.bitrate = 480, .hw_value = 96, },
 597         {.bitrate = 540, .hw_value = 108, },
 598         {.bitrate = 720, .hw_value = 144, },
 599 };
 600
 601 /* Channel definitions to be advertised to cfg80211 */
 602
 603 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 604         {.center_freq = 2412, .hw_value = 1, },
 605         {.center_freq = 2417, .hw_value = 2, },
 606         {.center_freq = 2422, .hw_value = 3, },
 607         {.center_freq = 2427, .hw_value = 4, },
 608         {.center_freq = 2432, .hw_value = 5, },
 609         {.center_freq = 2437, .hw_value = 6, },
 610         {.center_freq = 2442, .hw_value = 7, },
 611         {.center_freq = 2447, .hw_value = 8, },
 612         {.center_freq = 2452, .hw_value = 9, },
 613         {.center_freq = 2457, .hw_value = 10, },
 614         {.center_freq = 2462, .hw_value = 11, },
 615         {.center_freq = 2467, .hw_value = 12, },
 616         {.center_freq = 2472, .hw_value = 13, },
 617         {.center_freq = 2484, .hw_value = 14, },
 618 };
 619
 620 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 621         .channels = mwifiex_channels_2ghz,
 622         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 623         .bitrates = mwifiex_rates,
 624         .n_bitrates = 14,
 625 };
 626
 627 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 628         {.center_freq = 5040, .hw_value = 8, },
 629         {.center_freq = 5060, .hw_value = 12, },
 630         {.center_freq = 5080, .hw_value = 16, },
 631         {.center_freq = 5170, .hw_value = 34, },
 632         {.center_freq = 5190, .hw_value = 38, },
 633         {.center_freq = 5210, .hw_value = 42, },
 634         {.center_freq = 5230, .hw_value = 46, },
 635         {.center_freq = 5180, .hw_value = 36, },
 636         {.center_freq = 5200, .hw_value = 40, },
 637         {.center_freq = 5220, .hw_value = 44, },
 638         {.center_freq = 5240, .hw_value = 48, },
 639         {.center_freq = 5260, .hw_value = 52, },
 640         {.center_freq = 5280, .hw_value = 56, },
 641         {.center_freq = 5300, .hw_value = 60, },
 642         {.center_freq = 5320, .hw_value = 64, },
 643         {.center_freq = 5500, .hw_value = 100, },
 644         {.center_freq = 5520, .hw_value = 104, },
 645         {.center_freq = 5540, .hw_value = 108, },
 646         {.center_freq = 5560, .hw_value = 112, },
 647         {.center_freq = 5580, .hw_value = 116, },
 648         {.center_freq = 5600, .hw_value = 120, },
 649         {.center_freq = 5620, .hw_value = 124, },
 650         {.center_freq = 5640, .hw_value = 128, },
 651         {.center_freq = 5660, .hw_value = 132, },
 652         {.center_freq = 5680, .hw_value = 136, },
 653         {.center_freq = 5700, .hw_value = 140, },
 654         {.center_freq = 5745, .hw_value = 149, },
 655         {.center_freq = 5765, .hw_value = 153, },
 656         {.center_freq = 5785, .hw_value = 157, },
 657         {.center_freq = 5805, .hw_value = 161, },
 658         {.center_freq = 5825, .hw_value = 165, },
 659 };
 660
 661 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 662         .channels = mwifiex_channels_5ghz,
 663         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 664         .bitrates = mwifiex_rates - 4,
 665         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 666 };
 667
 668
 669 /* Supported crypto cipher suits to be advertised to cfg80211 */
 670
 671 static const u32 mwifiex_cipher_suites[] = {
 672         WLAN_CIPHER_SUITE_WEP40,
 673         WLAN_CIPHER_SUITE_WEP104,
 674         WLAN_CIPHER_SUITE_TKIP,
 675         WLAN_CIPHER_SUITE_CCMP,
 676 };
 677
 678 /*
 679  * CFG802.11 operation handler for disconnection request.
 680  *
 681  * This function does not work when there is already a disconnection
 682  * procedure going on.
 683  */
 684 static int
 685 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 686                             u16 reason_code)
 687 {
 688         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 689
 690         if (priv->disconnect)
 691                 return -EBUSY;
 692
 693         priv->disconnect = 1;
 694         if (mwifiex_deauthenticate(priv, NULL))
 695                 return -EFAULT;
 696
 697         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 698                 " reason code %d\n", priv->cfg_bssid, reason_code);
 699
 700         queue_work(priv->workqueue, &priv->cfg_workqueue);
 701
 702         return 0;
 703 }
 704
 705 /*
 706  * This function informs the CFG802.11 subsystem of a new IBSS.
 707  *
 708  * The following information are sent to the CFG802.11 subsystem
 709  * to register the new IBSS. If we do not register the new IBSS,
 710  * a kernel panic will result.
 711  *      - SSID
 712  *      - SSID length
 713  *      - BSSID
 714  *      - Channel
 715  */
 716 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 717 {
 718         struct ieee80211_channel *chan;
 719         struct mwifiex_bss_info bss_info;
 720         int ie_len = 0;
 721         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 722
 723         if (mwifiex_get_bss_info(priv, &bss_info))
 724                 return -1;
 725
 726         ie_buf[0] = WLAN_EID_SSID;
 727         ie_buf[1] = bss_info.ssid.ssid_len;
 728
 729         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 730                         &bss_info.ssid.ssid,
 731                         bss_info.ssid.ssid_len);
 732         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 733
 734         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 735                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 736                                                 priv->curr_bss_params.band));
 737
 738         cfg80211_inform_bss(priv->wdev->wiphy, chan,
 739                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 740                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 741         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 742
 743         return 0;
 744 }
 745
 746 /*
 747  * This function informs the CFG802.11 subsystem of a new BSS connection.
 748  *
 749  * The following information are sent to the CFG802.11 subsystem
 750  * to register the new BSS connection. If we do not register the new BSS,
 751  * a kernel panic will result.
 752  *      - MAC address
 753  *      - Capabilities
 754  *      - Beacon period
 755  *      - RSSI value
 756  *      - Channel
 757  *      - Supported rates IE
 758  *      - Extended capabilities IE
 759  *      - DS parameter set IE
 760  *      - HT Capability IE
 761  *      - Vendor Specific IE (221)
 762  *      - WPA IE
 763  *      - RSN IE
 764  */
 765 static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
 766                                                struct mwifiex_802_11_ssid *ssid)
 767 {
 768         struct mwifiex_scan_resp scan_resp;
 769         struct mwifiex_bssdescriptor *scan_table;
 770         int i, j;
 771         struct ieee80211_channel *chan;
 772         u8 *ie, *ie_buf;
 773         u32 ie_len;
 774         u8 *beacon;
 775         int beacon_size;
 776         u8 element_id, element_len;
 777
 778         memset(&scan_resp, 0, sizeof(scan_resp));
 779         scan_resp.scan_table = (u8 *) priv->adapter->scan_table;
 780         scan_resp.num_in_scan_table = priv->adapter->num_in_scan_table;
 781
 782 #define MAX_IE_BUF      2048
 783         ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
 784         if (!ie_buf) {
 785                 dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
 786                                                 __func__);
 787                 return -ENOMEM;
 788         }
 789
 790         scan_table = (struct mwifiex_bssdescriptor *) scan_resp.scan_table;
 791         for (i = 0; i < scan_resp.num_in_scan_table; i++) {
 792                 if (ssid) {
 793                         /* Inform specific BSS only */
 794                         if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
 795                                            ssid->ssid_len))
 796                                 continue;
 797                 }
 798                 memset(ie_buf, 0, MAX_IE_BUF);
 799                 ie_buf[0] = WLAN_EID_SSID;
 800                 ie_buf[1] = scan_table[i].ssid.ssid_len;
 801                 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 802                        scan_table[i].ssid.ssid, ie_buf[1]);
 803
 804                 ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
 805                 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 806
 807                 ie[0] = WLAN_EID_SUPP_RATES;
 808
 809                 for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
 810                         if (!scan_table[i].supported_rates[j])
 811                                 break;
 812                         else
 813                                 ie[j + sizeof(struct ieee_types_header)] =
 814                                         scan_table[i].supported_rates[j];
 815                 }
 816
 817                 ie[1] = j;
 818                 ie_len += ie[1] + sizeof(struct ieee_types_header);
 819
 820                 beacon = scan_table[i].beacon_buf;
 821                 beacon_size = scan_table[i].beacon_buf_size;
 822
 823                 /* Skip time stamp, beacon interval and capability */
 824
 825                 if (beacon) {
 826                         beacon += sizeof(scan_table[i].beacon_period)
 827                                 + sizeof(scan_table[i].time_stamp) +
 828                                 +sizeof(scan_table[i].cap_info_bitmap);
 829
 830                         beacon_size -= sizeof(scan_table[i].beacon_period)
 831                                 + sizeof(scan_table[i].time_stamp)
 832                                 + sizeof(scan_table[i].cap_info_bitmap);
 833                 }
 834
 835                 while (beacon_size >= sizeof(struct ieee_types_header)) {
 836                         ie = ie_buf + ie_len;
 837                         element_id = *beacon;
 838                         element_len = *(beacon + 1);
 839                         if (beacon_size < (int) element_len +
 840                             sizeof(struct ieee_types_header)) {
 841                                 dev_err(priv->adapter->dev, "%s: in processing"
 842                                         " IE, bytes left < IE length\n",
 843                                         __func__);
 844                                 break;
 845                         }
 846                         switch (element_id) {
 847                         case WLAN_EID_EXT_CAPABILITY:
 848                         case WLAN_EID_DS_PARAMS:
 849                         case WLAN_EID_HT_CAPABILITY:
 850                         case WLAN_EID_VENDOR_SPECIFIC:
 851                         case WLAN_EID_RSN:
 852                         case WLAN_EID_BSS_AC_ACCESS_DELAY:
 853                                 ie[0] = element_id;
 854                                 ie[1] = element_len;
 855                                 memcpy(&ie[sizeof(struct ieee_types_header)],
 856                                        (u8 *) beacon
 857                                        + sizeof(struct ieee_types_header),
 858                                        element_len);
 859                                 ie_len += ie[1] +
 860                                         sizeof(struct ieee_types_header);
 861                                 break;
 862                         default:
 863                                 break;
 864                         }
 865                         beacon += element_len +
 866                                         sizeof(struct ieee_types_header);
 867                         beacon_size -= element_len +
 868                                         sizeof(struct ieee_types_header);
 869                 }
 870                 chan = ieee80211_get_channel(priv->wdev->wiphy,
 871                                                 scan_table[i].freq);
 872                 cfg80211_inform_bss(priv->wdev->wiphy, chan,
 873                                         scan_table[i].mac_address,
 874                                         0, scan_table[i].cap_info_bitmap,
 875                                         scan_table[i].beacon_period,
 876                                         ie_buf, ie_len,
 877                                         scan_table[i].rssi, GFP_KERNEL);
 878         }
 879
 880         kfree(ie_buf);
 881         return 0;
 882 }
 883
 884 /*
 885  * This function connects with a BSS.
 886  *
 887  * This function handles both Infra and Ad-Hoc modes. It also performs
 888  * validity checking on the provided parameters, disconnects from the
 889  * current BSS (if any), sets up the association/scan parameters,
 890  * including security settings, and performs specific SSID scan before
 891  * trying to connect.
 892  *
 893  * For Infra mode, the function returns failure if the specified SSID
 894  * is not found in scan table. However, for Ad-Hoc mode, it can create
 895  * the IBSS if it does not exist. On successful completion in either case,
 896  * the function notifies the CFG802.11 subsystem of the new BSS connection,
 897  * otherwise the kernel will panic.
 898  */
 899 static int
 900 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 901                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 902                        struct cfg80211_connect_params *sme, bool privacy)
 903 {
 904         struct mwifiex_802_11_ssid req_ssid;
 905         struct mwifiex_ssid_bssid ssid_bssid;
 906         int ret = 0;
 907         int auth_type = 0;
 908
 909         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 910         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 911
 912         req_ssid.ssid_len = ssid_len;
 913         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 914                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 915                 return -EINVAL;
 916         }
 917
 918         memcpy(req_ssid.ssid, ssid, ssid_len);
 919         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 920                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 921                 return -EINVAL;
 922         }
 923
 924         /* disconnect before try to associate */
 925         mwifiex_deauthenticate(priv, NULL);
 926
 927         if (channel)
 928                 ret = mwifiex_set_rf_channel(priv, channel,
 929                                 mwifiex_channels_to_cfg80211_channel_type
 930                                 (priv->adapter->chan_offset));
 931
 932         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 933
 934         if (mode == NL80211_IFTYPE_ADHOC) {
 935                 /* "privacy" is set only for ad-hoc mode */
 936                 if (privacy) {
 937                         /*
 938                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 939                          * the firmware can find a matching network from the
 940                          * scan. The cfg80211 does not give us the encryption
 941                          * mode at this stage so just setting it to WEP here.
 942                          */
 943                         priv->sec_info.encryption_mode =
 944                                         WLAN_CIPHER_SUITE_WEP104;
 945                         priv->sec_info.authentication_mode =
 946                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 947                 }
 948
 949                 goto done;
 950         }
 951
 952         /* Now handle infra mode. "sme" is valid for infra mode only */
 953         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 954                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 955                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 956         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 957                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 958
 959         if (sme->crypto.n_ciphers_pairwise) {
 960                 priv->sec_info.encryption_mode =
 961                                                 sme->crypto.ciphers_pairwise[0];
 962                 priv->sec_info.authentication_mode = auth_type;
 963         }
 964
 965         if (sme->crypto.cipher_group) {
 966                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 967                 priv->sec_info.authentication_mode = auth_type;
 968         }
 969         if (sme->ie)
 970                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 971
 972         if (sme->key) {
 973                 if (mwifiex_is_alg_wep(0) | mwifiex_is_alg_wep(0)) {
 974                         dev_dbg(priv->adapter->dev,
 975                                 "info: setting wep encryption"
 976                                 " with key len %d\n", sme->key_len);
 977                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 978                                                         sme->key_idx, 0);
 979                 }
 980         }
 981 done:
 982         /* Do specific SSID scanning */
 983         if (mwifiex_request_scan(priv, &req_ssid)) {
 984                 dev_err(priv->adapter->dev, "scan error\n");
 985                 return -EFAULT;
 986         }
 987
 988
 989         memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
 990
 991         if (mode != NL80211_IFTYPE_ADHOC) {
 992                 if (mwifiex_find_best_bss(priv, &ssid_bssid))
 993                         return -EFAULT;
 994                 /* Inform the BSS information to kernel, otherwise
 995                  * kernel will give a panic after successful assoc */
 996                 if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
 997                         return -EFAULT;
 998         }
 999
1000         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
1001                (char *) req_ssid.ssid, ssid_bssid.bssid);
1002
1003         memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
1004
1005         /* Connect to BSS by ESSID */
1006         memset(&ssid_bssid.bssid, 0, ETH_ALEN);
1007
1008         if (!netif_queue_stopped(priv->netdev))
1009                 netif_stop_queue(priv->netdev);
1010
1011         if (mwifiex_bss_start(priv, &ssid_bssid))
1012                 return -EFAULT;
1013
1014         if (mode == NL80211_IFTYPE_ADHOC) {
1015                 /* Inform the BSS information to kernel, otherwise
1016                  * kernel will give a panic after successful assoc */
1017                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1018                         return -EFAULT;
1019         }
1020
1021         return ret;
1022 }
1023
1024 /*
1025  * CFG802.11 operation handler for association request.
1026  *
1027  * This function does not work when the current mode is set to Ad-Hoc, or
1028  * when there is already an association procedure going on. The given BSS
1029  * information is used to associate.
1030  */
1031 static int
1032 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1033                          struct cfg80211_connect_params *sme)
1034 {
1035         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1036         int ret = 0;
1037
1038         if (priv->assoc_request)
1039                 return -EBUSY;
1040
1041         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1042                 wiphy_err(wiphy, "received infra assoc request "
1043                                 "when station is in ibss mode\n");
1044                 goto done;
1045         }
1046
1047         priv->assoc_request = 1;
1048
1049         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1050                (char *) sme->ssid, sme->bssid);
1051
1052         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1053                                      priv->bss_mode, sme->channel, sme, 0);
1054
1055 done:
1056         priv->assoc_result = ret;
1057         queue_work(priv->workqueue, &priv->cfg_workqueue);
1058         return ret;
1059 }
1060
1061 /*
1062  * CFG802.11 operation handler to join an IBSS.
1063  *
1064  * This function does not work in any mode other than Ad-Hoc, or if
1065  * a join operation is already in progress.
1066  */
1067 static int
1068 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1069                            struct cfg80211_ibss_params *params)
1070 {
1071         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1072         int ret = 0;
1073
1074         if (priv->ibss_join_request)
1075                 return -EBUSY;
1076
1077         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1078                 wiphy_err(wiphy, "request to join ibss received "
1079                                 "when station is not in ibss mode\n");
1080                 goto done;
1081         }
1082
1083         priv->ibss_join_request = 1;
1084
1085         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1086                (char *) params->ssid, params->bssid);
1087
1088         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1089                                 params->bssid, priv->bss_mode,
1090                                 params->channel, NULL, params->privacy);
1091 done:
1092         priv->ibss_join_result = ret;
1093         queue_work(priv->workqueue, &priv->cfg_workqueue);
1094         return ret;
1095 }
1096
1097 /*
1098  * CFG802.11 operation handler to leave an IBSS.
1099  *
1100  * This function does not work if a leave operation is
1101  * already in progress.
1102  */
1103 static int
1104 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1105 {
1106         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1107
1108         if (priv->disconnect)
1109                 return -EBUSY;
1110
1111         priv->disconnect = 1;
1112
1113         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1114                         priv->cfg_bssid);
1115         if (mwifiex_deauthenticate(priv, NULL))
1116                 return -EFAULT;
1117
1118         queue_work(priv->workqueue, &priv->cfg_workqueue);
1119
1120         return 0;
1121 }
1122
1123 /*
1124  * CFG802.11 operation handler for scan request.
1125  *
1126  * This function issues a scan request to the firmware based upon
1127  * the user specified scan configuration. On successfull completion,
1128  * it also informs the results.
1129  */
1130 static int
1131 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1132                       struct cfg80211_scan_request *request)
1133 {
1134         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1135
1136         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1137
1138         if (priv->scan_request && priv->scan_request != request)
1139                 return -EBUSY;
1140
1141         priv->scan_request = request;
1142
1143         queue_work(priv->workqueue, &priv->cfg_workqueue);
1144         return 0;
1145 }
1146
1147 /*
1148  * This function sets up the CFG802.11 specific HT capability fields
1149  * with default values.
1150  *
1151  * The following default values are set -
1152  *      - HT Supported = True
1153  *      - Maximum AMPDU length factor = 0x3
1154  *      - Minimum AMPDU spacing = 0x6
1155  *      - HT Capabilities map = IEEE80211_HT_CAP_SUP_WIDTH_20_40 (0x0002)
1156  *      - MCS information, Rx mask = 0xff
1157  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1158  */
1159 static void
1160 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1161                       struct mwifiex_private *priv)
1162 {
1163         int rx_mcs_supp;
1164         struct ieee80211_mcs_info mcs_set;
1165         u8 *mcs = (u8 *)&mcs_set;
1166         struct mwifiex_adapter *adapter = priv->adapter;
1167
1168         ht_info->ht_supported = true;
1169         ht_info->ampdu_factor = 0x3;
1170         ht_info->ampdu_density = 0x6;
1171
1172         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1173         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1174
1175         rx_mcs_supp = GET_RXMCSSUPP(priv->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 /* station cfg80211 operations */
1192 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1193         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1194         .scan = mwifiex_cfg80211_scan,
1195         .connect = mwifiex_cfg80211_connect,
1196         .disconnect = mwifiex_cfg80211_disconnect,
1197         .get_station = mwifiex_cfg80211_get_station,
1198         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1199         .set_channel = mwifiex_cfg80211_set_channel,
1200         .join_ibss = mwifiex_cfg80211_join_ibss,
1201         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1202         .add_key = mwifiex_cfg80211_add_key,
1203         .del_key = mwifiex_cfg80211_del_key,
1204         .set_default_key = mwifiex_cfg80211_set_default_key,
1205         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1206         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1207 };
1208
1209 /*
1210  * This function registers the device with CFG802.11 subsystem.
1211  *
1212  * The function creates the wireless device/wiphy, populates it with
1213  * default parameters and handler function pointers, and finally
1214  * registers the device.
1215  */
1216 int mwifiex_register_cfg80211(struct net_device *dev, u8 *mac,
1217                               struct mwifiex_private *priv)
1218 {
1219         int ret = 0;
1220         void *wdev_priv = NULL;
1221         struct wireless_dev *wdev;
1222
1223         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1224         if (!wdev) {
1225                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1226                                                 __func__);
1227                 return -ENOMEM;
1228         }
1229         wdev->wiphy =
1230                 wiphy_new(&mwifiex_cfg80211_ops,
1231                           sizeof(struct mwifiex_private *));
1232         if (!wdev->wiphy)
1233                 return -ENOMEM;
1234         wdev->iftype = NL80211_IFTYPE_STATION;
1235         wdev->wiphy->max_scan_ssids = 10;
1236         wdev->wiphy->interface_modes =
1237                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1238
1239         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1240         mwifiex_setup_ht_caps(
1241                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1242
1243         if (priv->adapter->config_bands & BAND_A) {
1244                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1245                 mwifiex_setup_ht_caps(
1246                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1247         } else {
1248                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1249         }
1250
1251         /* Initialize cipher suits */
1252         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1253         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1254
1255         memcpy(wdev->wiphy->perm_addr, mac, 6);
1256         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1257
1258         /* We are using custom domains */
1259         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1260
1261         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1262
1263         /* Set struct mwifiex_private pointer in wiphy_priv */
1264         wdev_priv = wiphy_priv(wdev->wiphy);
1265
1266         *(unsigned long *) wdev_priv = (unsigned long) priv;
1267
1268         ret = wiphy_register(wdev->wiphy);
1269         if (ret < 0) {
1270                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1271                                                 __func__);
1272                 wiphy_free(wdev->wiphy);
1273                 return ret;
1274         } else {
1275                 dev_dbg(priv->adapter->dev,
1276                                 "info: successfully registered wiphy device\n");
1277         }
1278
1279         dev_net_set(dev, wiphy_net(wdev->wiphy));
1280         dev->ieee80211_ptr = wdev;
1281         memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
1282         memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
1283         SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
1284         priv->wdev = wdev;
1285
1286         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1287         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1288         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1289
1290         return ret;
1291 }
1292
1293 /*
1294  * This function handles the result of different pending network operations.
1295  *
1296  * The following operations are handled and CFG802.11 subsystem is
1297  * notified accordingly -
1298  *      - Scan request completion
1299  *      - Association request completion
1300  *      - IBSS join request completion
1301  *      - Disconnect request completion
1302  */
1303 void
1304 mwifiex_cfg80211_results(struct work_struct *work)
1305 {
1306         struct mwifiex_private *priv =
1307                 container_of(work, struct mwifiex_private, cfg_workqueue);
1308         struct mwifiex_user_scan_cfg *scan_req;
1309         int ret = 0, i;
1310         struct ieee80211_channel *chan;
1311
1312         if (priv->scan_request) {
1313                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1314                                    GFP_KERNEL);
1315                 if (!scan_req) {
1316                         dev_err(priv->adapter->dev, "failed to alloc "
1317                                                     "scan_req\n");
1318                         return;
1319                 }
1320                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1321                         memcpy(scan_req->ssid_list[i].ssid,
1322                                         priv->scan_request->ssids[i].ssid,
1323                                         priv->scan_request->ssids[i].ssid_len);
1324                         scan_req->ssid_list[i].max_len =
1325                                         priv->scan_request->ssids[i].ssid_len;
1326                 }
1327                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1328                         chan = priv->scan_request->channels[i];
1329                         scan_req->chan_list[i].chan_number = chan->hw_value;
1330                         scan_req->chan_list[i].radio_type = chan->band;
1331                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1332                                 scan_req->chan_list[i].scan_type =
1333                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1334                         else
1335                                 scan_req->chan_list[i].scan_type =
1336                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1337                         scan_req->chan_list[i].scan_time = 0;
1338                 }
1339                 if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
1340                         ret = -EFAULT;
1341                         goto done;
1342                 }
1343                 if (mwifiex_inform_bss_from_scan_result(priv, NULL))
1344                         ret = -EFAULT;
1345 done:
1346                 priv->scan_result_status = ret;
1347                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1348                                                         __func__);
1349                 cfg80211_scan_done(priv->scan_request,
1350                                 (priv->scan_result_status < 0));
1351                 priv->scan_request = NULL;
1352                 kfree(scan_req);
1353         }
1354
1355         if (priv->assoc_request) {
1356                 if (!priv->assoc_result) {
1357                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1358                                                 NULL, 0, NULL, 0,
1359                                                 WLAN_STATUS_SUCCESS,
1360                                                 GFP_KERNEL);
1361                         dev_dbg(priv->adapter->dev,
1362                                 "info: associated to bssid %pM successfully\n",
1363                                priv->cfg_bssid);
1364                 } else {
1365                         dev_dbg(priv->adapter->dev,
1366                                 "info: association to bssid %pM failed\n",
1367                                priv->cfg_bssid);
1368                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1369                 }
1370                 priv->assoc_request = 0;
1371                 priv->assoc_result = 0;
1372         }
1373
1374         if (priv->ibss_join_request) {
1375                 if (!priv->ibss_join_result) {
1376                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1377                                              GFP_KERNEL);
1378                         dev_dbg(priv->adapter->dev,
1379                                 "info: joined/created adhoc network with bssid"
1380                                         " %pM successfully\n", priv->cfg_bssid);
1381                 } else {
1382                         dev_dbg(priv->adapter->dev,
1383                                 "info: failed creating/joining adhoc network\n");
1384                 }
1385                 priv->ibss_join_request = 0;
1386                 priv->ibss_join_result = 0;
1387         }
1388
1389         if (priv->disconnect) {
1390                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1391                 priv->disconnect = 0;
1392         }
1393 }