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 setting bit rates.
 676  *
 677  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 678  * Currently only 2.4GHz band is supported.
 679  */
 680 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 681                                 struct net_device *dev,
 682                                 const u8 *peer,
 683                                 const struct cfg80211_bitrate_mask *mask)
 684 {
 685         struct mwifiex_ds_band_cfg band_cfg;
 686         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 687         int index = 0, mode = 0, i;
 688
 689         /* Currently only 2.4GHz is supported */
 690         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 691                 /*
 692                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 693                  * and from 6 they are OFDM; 802.11G
 694                  */
 695                 if (mwifiex_rates[i].bitrate == 60) {
 696                         index = 1 << i;
 697                         break;
 698                 }
 699         }
 700
 701         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 702                 mode = BAND_B;
 703         } else {
 704                 mode = BAND_G;
 705                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 706                         mode |=  BAND_B;
 707         }
 708
 709         memset(&band_cfg, 0, sizeof(band_cfg));
 710         band_cfg.config_bands = mode;
 711
 712         if (priv->bss_mode == NL80211_IFTYPE_ADHOC)
 713                 band_cfg.adhoc_start_band = mode;
 714
 715         band_cfg.sec_chan_offset = NO_SEC_CHANNEL;
 716
 717         if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
 718                 return -EFAULT;
 719
 720         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 721                                 (mode & BAND_B) ? "b" : "",
 722                                 (mode & BAND_G) ? "g" : "");
 723
 724         return 0;
 725 }
 726
 727 /*
 728  * CFG802.11 operation handler for disconnection request.
 729  *
 730  * This function does not work when there is already a disconnection
 731  * procedure going on.
 732  */
 733 static int
 734 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 735                             u16 reason_code)
 736 {
 737         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 738
 739         if (priv->disconnect)
 740                 return -EBUSY;
 741
 742         priv->disconnect = 1;
 743         if (mwifiex_deauthenticate(priv, NULL))
 744                 return -EFAULT;
 745
 746         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 747                 " reason code %d\n", priv->cfg_bssid, reason_code);
 748
 749         queue_work(priv->workqueue, &priv->cfg_workqueue);
 750
 751         return 0;
 752 }
 753
 754 /*
 755  * This function informs the CFG802.11 subsystem of a new IBSS.
 756  *
 757  * The following information are sent to the CFG802.11 subsystem
 758  * to register the new IBSS. If we do not register the new IBSS,
 759  * a kernel panic will result.
 760  *      - SSID
 761  *      - SSID length
 762  *      - BSSID
 763  *      - Channel
 764  */
 765 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 766 {
 767         struct ieee80211_channel *chan;
 768         struct mwifiex_bss_info bss_info;
 769         int ie_len;
 770         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 771
 772         if (mwifiex_get_bss_info(priv, &bss_info))
 773                 return -1;
 774
 775         ie_buf[0] = WLAN_EID_SSID;
 776         ie_buf[1] = bss_info.ssid.ssid_len;
 777
 778         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 779                         &bss_info.ssid.ssid,
 780                         bss_info.ssid.ssid_len);
 781         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 782
 783         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 784                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 785                                                 priv->curr_bss_params.band));
 786
 787         cfg80211_inform_bss(priv->wdev->wiphy, chan,
 788                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 789                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 790         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 791
 792         return 0;
 793 }
 794
 795 /*
 796  * This function informs the CFG802.11 subsystem of a new BSS connection.
 797  *
 798  * The following information are sent to the CFG802.11 subsystem
 799  * to register the new BSS connection. If we do not register the new BSS,
 800  * a kernel panic will result.
 801  *      - MAC address
 802  *      - Capabilities
 803  *      - Beacon period
 804  *      - RSSI value
 805  *      - Channel
 806  *      - Supported rates IE
 807  *      - Extended capabilities IE
 808  *      - DS parameter set IE
 809  *      - HT Capability IE
 810  *      - Vendor Specific IE (221)
 811  *      - WPA IE
 812  *      - RSN IE
 813  */
 814 static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
 815                                                struct mwifiex_802_11_ssid *ssid)
 816 {
 817         struct mwifiex_bssdescriptor *scan_table;
 818         int i, j;
 819         struct ieee80211_channel *chan;
 820         u8 *ie, *ie_buf;
 821         u32 ie_len;
 822         u8 *beacon;
 823         int beacon_size;
 824         u8 element_id, element_len;
 825
 826 #define MAX_IE_BUF      2048
 827         ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
 828         if (!ie_buf) {
 829                 dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
 830                                                 __func__);
 831                 return -ENOMEM;
 832         }
 833
 834         scan_table = priv->adapter->scan_table;
 835         for (i = 0; i < priv->adapter->num_in_scan_table; i++) {
 836                 if (ssid) {
 837                         /* Inform specific BSS only */
 838                         if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
 839                                            ssid->ssid_len))
 840                                 continue;
 841                 }
 842                 memset(ie_buf, 0, MAX_IE_BUF);
 843                 ie_buf[0] = WLAN_EID_SSID;
 844                 ie_buf[1] = scan_table[i].ssid.ssid_len;
 845                 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 846                        scan_table[i].ssid.ssid, ie_buf[1]);
 847
 848                 ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
 849                 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 850
 851                 ie[0] = WLAN_EID_SUPP_RATES;
 852
 853                 for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
 854                         if (!scan_table[i].supported_rates[j])
 855                                 break;
 856                         else
 857                                 ie[j + sizeof(struct ieee_types_header)] =
 858                                         scan_table[i].supported_rates[j];
 859                 }
 860
 861                 ie[1] = j;
 862                 ie_len += ie[1] + sizeof(struct ieee_types_header);
 863
 864                 beacon = scan_table[i].beacon_buf;
 865                 beacon_size = scan_table[i].beacon_buf_size;
 866
 867                 /* Skip time stamp, beacon interval and capability */
 868
 869                 if (beacon) {
 870                         beacon += sizeof(scan_table[i].beacon_period)
 871                                 + sizeof(scan_table[i].time_stamp) +
 872                                 +sizeof(scan_table[i].cap_info_bitmap);
 873
 874                         beacon_size -= sizeof(scan_table[i].beacon_period)
 875                                 + sizeof(scan_table[i].time_stamp)
 876                                 + sizeof(scan_table[i].cap_info_bitmap);
 877                 }
 878
 879                 while (beacon_size >= sizeof(struct ieee_types_header)) {
 880                         ie = ie_buf + ie_len;
 881                         element_id = *beacon;
 882                         element_len = *(beacon + 1);
 883                         if (beacon_size < (int) element_len +
 884                             sizeof(struct ieee_types_header)) {
 885                                 dev_err(priv->adapter->dev, "%s: in processing"
 886                                         " IE, bytes left < IE length\n",
 887                                         __func__);
 888                                 break;
 889                         }
 890                         switch (element_id) {
 891                         case WLAN_EID_EXT_CAPABILITY:
 892                         case WLAN_EID_DS_PARAMS:
 893                         case WLAN_EID_HT_CAPABILITY:
 894                         case WLAN_EID_VENDOR_SPECIFIC:
 895                         case WLAN_EID_RSN:
 896                         case WLAN_EID_BSS_AC_ACCESS_DELAY:
 897                                 ie[0] = element_id;
 898                                 ie[1] = element_len;
 899                                 memcpy(&ie[sizeof(struct ieee_types_header)],
 900                                        (u8 *) beacon
 901                                        + sizeof(struct ieee_types_header),
 902                                        element_len);
 903                                 ie_len += ie[1] +
 904                                         sizeof(struct ieee_types_header);
 905                                 break;
 906                         default:
 907                                 break;
 908                         }
 909                         beacon += element_len +
 910                                         sizeof(struct ieee_types_header);
 911                         beacon_size -= element_len +
 912                                         sizeof(struct ieee_types_header);
 913                 }
 914                 chan = ieee80211_get_channel(priv->wdev->wiphy,
 915                                                 scan_table[i].freq);
 916                 cfg80211_inform_bss(priv->wdev->wiphy, chan,
 917                                         scan_table[i].mac_address,
 918                                         0, scan_table[i].cap_info_bitmap,
 919                                         scan_table[i].beacon_period,
 920                                         ie_buf, ie_len,
 921                                         scan_table[i].rssi, GFP_KERNEL);
 922         }
 923
 924         kfree(ie_buf);
 925         return 0;
 926 }
 927
 928 /*
 929  * This function connects with a BSS.
 930  *
 931  * This function handles both Infra and Ad-Hoc modes. It also performs
 932  * validity checking on the provided parameters, disconnects from the
 933  * current BSS (if any), sets up the association/scan parameters,
 934  * including security settings, and performs specific SSID scan before
 935  * trying to connect.
 936  *
 937  * For Infra mode, the function returns failure if the specified SSID
 938  * is not found in scan table. However, for Ad-Hoc mode, it can create
 939  * the IBSS if it does not exist. On successful completion in either case,
 940  * the function notifies the CFG802.11 subsystem of the new BSS connection,
 941  * otherwise the kernel will panic.
 942  */
 943 static int
 944 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 945                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 946                        struct cfg80211_connect_params *sme, bool privacy)
 947 {
 948         struct mwifiex_802_11_ssid req_ssid;
 949         struct mwifiex_ssid_bssid ssid_bssid;
 950         int ret, auth_type = 0;
 951
 952         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 953         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 954
 955         req_ssid.ssid_len = ssid_len;
 956         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 957                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 958                 return -EINVAL;
 959         }
 960
 961         memcpy(req_ssid.ssid, ssid, ssid_len);
 962         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 963                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 964                 return -EINVAL;
 965         }
 966
 967         /* disconnect before try to associate */
 968         mwifiex_deauthenticate(priv, NULL);
 969
 970         if (channel)
 971                 ret = mwifiex_set_rf_channel(priv, channel,
 972                                 mwifiex_channels_to_cfg80211_channel_type
 973                                 (priv->adapter->chan_offset));
 974
 975         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 976
 977         if (mode == NL80211_IFTYPE_ADHOC) {
 978                 /* "privacy" is set only for ad-hoc mode */
 979                 if (privacy) {
 980                         /*
 981                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 982                          * the firmware can find a matching network from the
 983                          * scan. The cfg80211 does not give us the encryption
 984                          * mode at this stage so just setting it to WEP here.
 985                          */
 986                         priv->sec_info.encryption_mode =
 987                                         WLAN_CIPHER_SUITE_WEP104;
 988                         priv->sec_info.authentication_mode =
 989                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 990                 }
 991
 992                 goto done;
 993         }
 994
 995         /* Now handle infra mode. "sme" is valid for infra mode only */
 996         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 997                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 998                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 999         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1000                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1001
1002         if (sme->crypto.n_ciphers_pairwise) {
1003                 priv->sec_info.encryption_mode =
1004                                                 sme->crypto.ciphers_pairwise[0];
1005                 priv->sec_info.authentication_mode = auth_type;
1006         }
1007
1008         if (sme->crypto.cipher_group) {
1009                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1010                 priv->sec_info.authentication_mode = auth_type;
1011         }
1012         if (sme->ie)
1013                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1014
1015         if (sme->key) {
1016                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1017                         dev_dbg(priv->adapter->dev,
1018                                 "info: setting wep encryption"
1019                                 " with key len %d\n", sme->key_len);
1020                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1021                                                         sme->key_idx, 0);
1022                 }
1023         }
1024 done:
1025         /* Do specific SSID scanning */
1026         if (mwifiex_request_scan(priv, &req_ssid)) {
1027                 dev_err(priv->adapter->dev, "scan error\n");
1028                 return -EFAULT;
1029         }
1030
1031
1032         memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
1033
1034         if (mode != NL80211_IFTYPE_ADHOC) {
1035                 if (mwifiex_find_best_bss(priv, &ssid_bssid))
1036                         return -EFAULT;
1037                 /* Inform the BSS information to kernel, otherwise
1038                  * kernel will give a panic after successful assoc */
1039                 if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
1040                         return -EFAULT;
1041         }
1042
1043         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
1044                (char *) req_ssid.ssid, ssid_bssid.bssid);
1045
1046         memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
1047
1048         /* Connect to BSS by ESSID */
1049         memset(&ssid_bssid.bssid, 0, ETH_ALEN);
1050
1051         if (!netif_queue_stopped(priv->netdev))
1052                 netif_stop_queue(priv->netdev);
1053
1054         if (mwifiex_bss_start(priv, &ssid_bssid))
1055                 return -EFAULT;
1056
1057         if (mode == NL80211_IFTYPE_ADHOC) {
1058                 /* Inform the BSS information to kernel, otherwise
1059                  * kernel will give a panic after successful assoc */
1060                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1061                         return -EFAULT;
1062         }
1063
1064         return ret;
1065 }
1066
1067 /*
1068  * CFG802.11 operation handler for association request.
1069  *
1070  * This function does not work when the current mode is set to Ad-Hoc, or
1071  * when there is already an association procedure going on. The given BSS
1072  * information is used to associate.
1073  */
1074 static int
1075 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1076                          struct cfg80211_connect_params *sme)
1077 {
1078         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1079         int ret = 0;
1080
1081         if (priv->assoc_request)
1082                 return -EBUSY;
1083
1084         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1085                 wiphy_err(wiphy, "received infra assoc request "
1086                                 "when station is in ibss mode\n");
1087                 goto done;
1088         }
1089
1090         priv->assoc_request = -EINPROGRESS;
1091
1092         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1093                (char *) sme->ssid, sme->bssid);
1094
1095         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1096                                      priv->bss_mode, sme->channel, sme, 0);
1097
1098         priv->assoc_request = 1;
1099 done:
1100         priv->assoc_result = ret;
1101         queue_work(priv->workqueue, &priv->cfg_workqueue);
1102         return ret;
1103 }
1104
1105 /*
1106  * CFG802.11 operation handler to join an IBSS.
1107  *
1108  * This function does not work in any mode other than Ad-Hoc, or if
1109  * a join operation is already in progress.
1110  */
1111 static int
1112 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1113                            struct cfg80211_ibss_params *params)
1114 {
1115         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1116         int ret = 0;
1117
1118         if (priv->ibss_join_request)
1119                 return -EBUSY;
1120
1121         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1122                 wiphy_err(wiphy, "request to join ibss received "
1123                                 "when station is not in ibss mode\n");
1124                 goto done;
1125         }
1126
1127         priv->ibss_join_request = -EINPROGRESS;
1128
1129         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1130                (char *) params->ssid, params->bssid);
1131
1132         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1133                                 params->bssid, priv->bss_mode,
1134                                 params->channel, NULL, params->privacy);
1135
1136         priv->ibss_join_request = 1;
1137 done:
1138         priv->ibss_join_result = ret;
1139         queue_work(priv->workqueue, &priv->cfg_workqueue);
1140         return ret;
1141 }
1142
1143 /*
1144  * CFG802.11 operation handler to leave an IBSS.
1145  *
1146  * This function does not work if a leave operation is
1147  * already in progress.
1148  */
1149 static int
1150 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1151 {
1152         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1153
1154         if (priv->disconnect)
1155                 return -EBUSY;
1156
1157         priv->disconnect = 1;
1158
1159         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1160                         priv->cfg_bssid);
1161         if (mwifiex_deauthenticate(priv, NULL))
1162                 return -EFAULT;
1163
1164         queue_work(priv->workqueue, &priv->cfg_workqueue);
1165
1166         return 0;
1167 }
1168
1169 /*
1170  * CFG802.11 operation handler for scan request.
1171  *
1172  * This function issues a scan request to the firmware based upon
1173  * the user specified scan configuration. On successfull completion,
1174  * it also informs the results.
1175  */
1176 static int
1177 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1178                       struct cfg80211_scan_request *request)
1179 {
1180         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1181
1182         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1183
1184         if (priv->scan_request && priv->scan_request != request)
1185                 return -EBUSY;
1186
1187         priv->scan_request = request;
1188
1189         queue_work(priv->workqueue, &priv->cfg_workqueue);
1190         return 0;
1191 }
1192
1193 /*
1194  * This function sets up the CFG802.11 specific HT capability fields
1195  * with default values.
1196  *
1197  * The following default values are set -
1198  *      - HT Supported = True
1199  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1200  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1201  *      - HT Capabilities supported by firmware
1202  *      - MCS information, Rx mask = 0xff
1203  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1204  */
1205 static void
1206 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1207                       struct mwifiex_private *priv)
1208 {
1209         int rx_mcs_supp;
1210         struct ieee80211_mcs_info mcs_set;
1211         u8 *mcs = (u8 *)&mcs_set;
1212         struct mwifiex_adapter *adapter = priv->adapter;
1213
1214         ht_info->ht_supported = true;
1215         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1216         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1217
1218         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1219
1220         /* Fill HT capability information */
1221         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1222                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1223         else
1224                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1225
1226         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1227                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1228         else
1229                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1230
1231         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1232                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1233         else
1234                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1235
1236         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1237                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1238         else
1239                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1240
1241         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1242                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1243         else
1244                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1245
1246         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1247         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1248
1249         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1250         /* Set MCS for 1x1 */
1251         memset(mcs, 0xff, rx_mcs_supp);
1252         /* Clear all the other values */
1253         memset(&mcs[rx_mcs_supp], 0,
1254                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1255         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1256                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1257                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1258                 SETHT_MCS32(mcs_set.rx_mask);
1259
1260         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1261
1262         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1263 }
1264
1265 /* station cfg80211 operations */
1266 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1267         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1268         .scan = mwifiex_cfg80211_scan,
1269         .connect = mwifiex_cfg80211_connect,
1270         .disconnect = mwifiex_cfg80211_disconnect,
1271         .get_station = mwifiex_cfg80211_get_station,
1272         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1273         .set_channel = mwifiex_cfg80211_set_channel,
1274         .join_ibss = mwifiex_cfg80211_join_ibss,
1275         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1276         .add_key = mwifiex_cfg80211_add_key,
1277         .del_key = mwifiex_cfg80211_del_key,
1278         .set_default_key = mwifiex_cfg80211_set_default_key,
1279         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1280         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1281         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1282 };
1283
1284 /*
1285  * This function registers the device with CFG802.11 subsystem.
1286  *
1287  * The function creates the wireless device/wiphy, populates it with
1288  * default parameters and handler function pointers, and finally
1289  * registers the device.
1290  */
1291 int mwifiex_register_cfg80211(struct net_device *dev, u8 *mac,
1292                               struct mwifiex_private *priv)
1293 {
1294         int ret;
1295         void *wdev_priv;
1296         struct wireless_dev *wdev;
1297
1298         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1299         if (!wdev) {
1300                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1301                                                 __func__);
1302                 return -ENOMEM;
1303         }
1304         wdev->wiphy =
1305                 wiphy_new(&mwifiex_cfg80211_ops,
1306                           sizeof(struct mwifiex_private *));
1307         if (!wdev->wiphy) {
1308                 kfree(wdev);
1309                 return -ENOMEM;
1310         }
1311         wdev->iftype = NL80211_IFTYPE_STATION;
1312         wdev->wiphy->max_scan_ssids = 10;
1313         wdev->wiphy->interface_modes =
1314                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1315
1316         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1317         mwifiex_setup_ht_caps(
1318                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1319
1320         if (priv->adapter->config_bands & BAND_A) {
1321                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1322                 mwifiex_setup_ht_caps(
1323                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1324         } else {
1325                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1326         }
1327
1328         /* Initialize cipher suits */
1329         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1330         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1331
1332         memcpy(wdev->wiphy->perm_addr, mac, 6);
1333         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1334
1335         /* We are using custom domains */
1336         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1337
1338         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1339
1340         /* Set struct mwifiex_private pointer in wiphy_priv */
1341         wdev_priv = wiphy_priv(wdev->wiphy);
1342
1343         *(unsigned long *) wdev_priv = (unsigned long) priv;
1344
1345         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1346
1347         ret = wiphy_register(wdev->wiphy);
1348         if (ret < 0) {
1349                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1350                                                 __func__);
1351                 wiphy_free(wdev->wiphy);
1352                 kfree(wdev);
1353                 return ret;
1354         } else {
1355                 dev_dbg(priv->adapter->dev,
1356                                 "info: successfully registered wiphy device\n");
1357         }
1358
1359         dev_net_set(dev, wiphy_net(wdev->wiphy));
1360         dev->ieee80211_ptr = wdev;
1361         memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
1362         memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
1363         SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
1364         priv->wdev = wdev;
1365
1366         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1367         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1368         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1369
1370         return ret;
1371 }
1372
1373 /*
1374  * This function handles the result of different pending network operations.
1375  *
1376  * The following operations are handled and CFG802.11 subsystem is
1377  * notified accordingly -
1378  *      - Scan request completion
1379  *      - Association request completion
1380  *      - IBSS join request completion
1381  *      - Disconnect request completion
1382  */
1383 void
1384 mwifiex_cfg80211_results(struct work_struct *work)
1385 {
1386         struct mwifiex_private *priv =
1387                 container_of(work, struct mwifiex_private, cfg_workqueue);
1388         struct mwifiex_user_scan_cfg *scan_req;
1389         int ret = 0, i;
1390         struct ieee80211_channel *chan;
1391
1392         if (priv->scan_request) {
1393                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1394                                    GFP_KERNEL);
1395                 if (!scan_req) {
1396                         dev_err(priv->adapter->dev, "failed to alloc "
1397                                                     "scan_req\n");
1398                         return;
1399                 }
1400                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1401                         memcpy(scan_req->ssid_list[i].ssid,
1402                                         priv->scan_request->ssids[i].ssid,
1403                                         priv->scan_request->ssids[i].ssid_len);
1404                         scan_req->ssid_list[i].max_len =
1405                                         priv->scan_request->ssids[i].ssid_len;
1406                 }
1407                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1408                         chan = priv->scan_request->channels[i];
1409                         scan_req->chan_list[i].chan_number = chan->hw_value;
1410                         scan_req->chan_list[i].radio_type = chan->band;
1411                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1412                                 scan_req->chan_list[i].scan_type =
1413                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1414                         else
1415                                 scan_req->chan_list[i].scan_type =
1416                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1417                         scan_req->chan_list[i].scan_time = 0;
1418                 }
1419                 if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
1420                         ret = -EFAULT;
1421                         goto done;
1422                 }
1423                 if (mwifiex_inform_bss_from_scan_result(priv, NULL))
1424                         ret = -EFAULT;
1425 done:
1426                 priv->scan_result_status = ret;
1427                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1428                                                         __func__);
1429                 cfg80211_scan_done(priv->scan_request,
1430                                 (priv->scan_result_status < 0));
1431                 priv->scan_request = NULL;
1432                 kfree(scan_req);
1433         }
1434
1435         if (priv->assoc_request == 1) {
1436                 if (!priv->assoc_result) {
1437                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1438                                                 NULL, 0, NULL, 0,
1439                                                 WLAN_STATUS_SUCCESS,
1440                                                 GFP_KERNEL);
1441                         dev_dbg(priv->adapter->dev,
1442                                 "info: associated to bssid %pM successfully\n",
1443                                priv->cfg_bssid);
1444                 } else {
1445                         dev_dbg(priv->adapter->dev,
1446                                 "info: association to bssid %pM failed\n",
1447                                priv->cfg_bssid);
1448                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1449                 }
1450                 priv->assoc_request = 0;
1451                 priv->assoc_result = 0;
1452         }
1453
1454         if (priv->ibss_join_request == 1) {
1455                 if (!priv->ibss_join_result) {
1456                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1457                                              GFP_KERNEL);
1458                         dev_dbg(priv->adapter->dev,
1459                                 "info: joined/created adhoc network with bssid"
1460                                         " %pM successfully\n", priv->cfg_bssid);
1461                 } else {
1462                         dev_dbg(priv->adapter->dev,
1463                                 "info: failed creating/joining adhoc network\n");
1464                 }
1465                 priv->ibss_join_request = 0;
1466                 priv->ibss_join_result = 0;
1467         }
1468
1469         if (priv->disconnect) {
1470                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1471                 priv->disconnect = 0;
1472         }
1473 }