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 static const struct ieee80211_regdomain mwifiex_world_regdom_custom = {
  24         .n_reg_rules = 7,
  25         .alpha2 =  "99",
  26         .reg_rules = {
  27                 /* Channel 1 - 11 */
  28                 REG_RULE(2412-10, 2462+10, 40, 3, 20, 0),
  29                 /* Channel 12 - 13 */
  30                 REG_RULE(2467-10, 2472+10, 20, 3, 20,
  31                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  32                 /* Channel 14 */
  33                 REG_RULE(2484-10, 2484+10, 20, 3, 20,
  34                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  35                          NL80211_RRF_NO_OFDM),
  36                 /* Channel 36 - 48 */
  37                 REG_RULE(5180-10, 5240+10, 40, 3, 20,
  38                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  39                 /* Channel 149 - 165 */
  40                 REG_RULE(5745-10, 5825+10, 40, 3, 20,
  41                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  42                 /* Channel 52 - 64 */
  43                 REG_RULE(5260-10, 5320+10, 40, 3, 30,
  44                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  45                          NL80211_RRF_DFS),
  46                 /* Channel 100 - 140 */
  47                 REG_RULE(5500-10, 5700+10, 40, 3, 30,
  48                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  49                          NL80211_RRF_DFS),
  50         }
  51 };
  52
  53 /*
  54  * This function maps the nl802.11 channel type into driver channel type.
  55  *
  56  * The mapping is as follows -
  57  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  58  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  59  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  60  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  61  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  62  */
  63 static u8
  64 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
  65                                                  channel_type)
  66 {
  67         switch (channel_type) {
  68         case NL80211_CHAN_NO_HT:
  69         case NL80211_CHAN_HT20:
  70                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  71         case NL80211_CHAN_HT40PLUS:
  72                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  73         case NL80211_CHAN_HT40MINUS:
  74                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  75         default:
  76                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  77         }
  78 }
  79
  80 /*
  81  * This function checks whether WEP is set.
  82  */
  83 static int
  84 mwifiex_is_alg_wep(u32 cipher)
  85 {
  86         switch (cipher) {
  87         case WLAN_CIPHER_SUITE_WEP40:
  88         case WLAN_CIPHER_SUITE_WEP104:
  89                 return 1;
  90         default:
  91                 break;
  92         }
  93
  94         return 0;
  95 }
  96
  97 /*
  98  * This function retrieves the private structure from kernel wiphy structure.
  99  */
 100 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
 101 {
 102         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 103 }
 104
 105 /*
 106  * CFG802.11 operation handler to delete a network key.
 107  */
 108 static int
 109 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 110                          u8 key_index, bool pairwise, const u8 *mac_addr)
 111 {
 112         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 113
 114         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
 115                 wiphy_err(wiphy, "deleting the crypto keys\n");
 116                 return -EFAULT;
 117         }
 118
 119         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 120         return 0;
 121 }
 122
 123 /*
 124  * CFG802.11 operation handler to set Tx power.
 125  */
 126 static int
 127 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 128                               enum nl80211_tx_power_setting type,
 129                               int mbm)
 130 {
 131         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 132         struct mwifiex_power_cfg power_cfg;
 133         int dbm = MBM_TO_DBM(mbm);
 134
 135         if (type == NL80211_TX_POWER_FIXED) {
 136                 power_cfg.is_power_auto = 0;
 137                 power_cfg.power_level = dbm;
 138         } else {
 139                 power_cfg.is_power_auto = 1;
 140         }
 141
 142         return mwifiex_set_tx_power(priv, &power_cfg);
 143 }
 144
 145 /*
 146  * CFG802.11 operation handler to set Power Save option.
 147  *
 148  * The timeout value, if provided, is currently ignored.
 149  */
 150 static int
 151 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 152                                 struct net_device *dev,
 153                                 bool enabled, int timeout)
 154 {
 155         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 156         u32 ps_mode;
 157
 158         if (timeout)
 159                 wiphy_dbg(wiphy,
 160                           "info: ignore timeout value for IEEE Power Save\n");
 161
 162         ps_mode = enabled;
 163
 164         return mwifiex_drv_set_power(priv, &ps_mode);
 165 }
 166
 167 /*
 168  * CFG802.11 operation handler to set the default network key.
 169  */
 170 static int
 171 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 172                                  u8 key_index, bool unicast,
 173                                  bool multicast)
 174 {
 175         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 176
 177         /* Return if WEP key not configured */
 178         if (!priv->sec_info.wep_enabled)
 179                 return 0;
 180
 181         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 182                 wiphy_err(wiphy, "set default Tx key index\n");
 183                 return -EFAULT;
 184         }
 185
 186         return 0;
 187 }
 188
 189 /*
 190  * CFG802.11 operation handler to add a network key.
 191  */
 192 static int
 193 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 194                          u8 key_index, bool pairwise, const u8 *mac_addr,
 195                          struct key_params *params)
 196 {
 197         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 198
 199         if (mwifiex_set_encode(priv, params->key, params->key_len,
 200                                key_index, 0)) {
 201                 wiphy_err(wiphy, "crypto keys added\n");
 202                 return -EFAULT;
 203         }
 204
 205         return 0;
 206 }
 207
 208 /*
 209  * This function sends domain information to the firmware.
 210  *
 211  * The following information are passed to the firmware -
 212  *      - Country codes
 213  *      - Sub bands (first channel, number of channels, maximum Tx power)
 214  */
 215 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 216 {
 217         u8 no_of_triplet = 0;
 218         struct ieee80211_country_ie_triplet *t;
 219         u8 no_of_parsed_chan = 0;
 220         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 221         u8 i, flag = 0;
 222         enum ieee80211_band band;
 223         struct ieee80211_supported_band *sband;
 224         struct ieee80211_channel *ch;
 225         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 226         struct mwifiex_adapter *adapter = priv->adapter;
 227         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 228
 229         /* Set country code */
 230         domain_info->country_code[0] = priv->country_code[0];
 231         domain_info->country_code[1] = priv->country_code[1];
 232         domain_info->country_code[2] = ' ';
 233
 234         band = mwifiex_band_to_radio_type(adapter->config_bands);
 235         if (!wiphy->bands[band]) {
 236                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 237                 return -1;
 238         }
 239
 240         sband = wiphy->bands[band];
 241
 242         for (i = 0; i < sband->n_channels ; i++) {
 243                 ch = &sband->channels[i];
 244                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 245                         continue;
 246
 247                 if (!flag) {
 248                         flag = 1;
 249                         first_chan = (u32) ch->hw_value;
 250                         next_chan = first_chan;
 251                         max_pwr = ch->max_power;
 252                         no_of_parsed_chan = 1;
 253                         continue;
 254                 }
 255
 256                 if (ch->hw_value == next_chan + 1 &&
 257                     ch->max_power == max_pwr) {
 258                         next_chan++;
 259                         no_of_parsed_chan++;
 260                 } else {
 261                         t = &domain_info->triplet[no_of_triplet];
 262                         t->chans.first_channel = first_chan;
 263                         t->chans.num_channels = no_of_parsed_chan;
 264                         t->chans.max_power = max_pwr;
 265                         no_of_triplet++;
 266                         first_chan = (u32) ch->hw_value;
 267                         next_chan = first_chan;
 268                         max_pwr = ch->max_power;
 269                         no_of_parsed_chan = 1;
 270                 }
 271         }
 272
 273         if (flag) {
 274                 t = &domain_info->triplet[no_of_triplet];
 275                 t->chans.first_channel = first_chan;
 276                 t->chans.num_channels = no_of_parsed_chan;
 277                 t->chans.max_power = max_pwr;
 278                 no_of_triplet++;
 279         }
 280
 281         domain_info->no_of_triplet = no_of_triplet;
 282
 283         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 284                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 285                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 286                 return -1;
 287         }
 288
 289         return 0;
 290 }
 291
 292 /*
 293  * CFG802.11 regulatory domain callback function.
 294  *
 295  * This function is called when the regulatory domain is changed due to the
 296  * following reasons -
 297  *      - Set by driver
 298  *      - Set by system core
 299  *      - Set by user
 300  *      - Set bt Country IE
 301  */
 302 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 303                                 struct regulatory_request *request)
 304 {
 305         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 306
 307         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 308                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 309
 310         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 311
 312         switch (request->initiator) {
 313         case NL80211_REGDOM_SET_BY_DRIVER:
 314         case NL80211_REGDOM_SET_BY_CORE:
 315         case NL80211_REGDOM_SET_BY_USER:
 316                 break;
 317                 /* Todo: apply driver specific changes in channel flags based
 318                    on the request initiator if necessary. */
 319         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 320                 break;
 321         }
 322         mwifiex_send_domain_info_cmd_fw(wiphy);
 323
 324         return 0;
 325 }
 326
 327 /*
 328  * This function sets the RF channel.
 329  *
 330  * This function creates multiple IOCTL requests, populates them accordingly
 331  * and issues them to set the band/channel and frequency.
 332  */
 333 static int
 334 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 335                        struct ieee80211_channel *chan,
 336                        enum nl80211_channel_type channel_type)
 337 {
 338         struct mwifiex_chan_freq_power cfp;
 339         u32 config_bands = 0;
 340         struct wiphy *wiphy = priv->wdev->wiphy;
 341         struct mwifiex_adapter *adapter = priv->adapter;
 342
 343         if (chan) {
 344                 /* Set appropriate bands */
 345                 if (chan->band == IEEE80211_BAND_2GHZ) {
 346                         if (channel_type == NL80211_CHAN_NO_HT)
 347                                 if (priv->adapter->config_bands == BAND_B ||
 348                                     priv->adapter->config_bands == BAND_G)
 349                                         config_bands =
 350                                                 priv->adapter->config_bands;
 351                                 else
 352                                         config_bands = BAND_B | BAND_G;
 353                         else
 354                                 config_bands = BAND_B | BAND_G | BAND_GN;
 355                 } else {
 356                         if (channel_type == NL80211_CHAN_NO_HT)
 357                                 config_bands = BAND_A;
 358                         else
 359                                 config_bands = BAND_AN | BAND_A;
 360                 }
 361
 362                 if (!((config_bands | adapter->fw_bands) &
 363                                                 ~adapter->fw_bands)) {
 364                         adapter->config_bands = config_bands;
 365                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 366                                 adapter->adhoc_start_band = config_bands;
 367                                 if ((config_bands & BAND_GN) ||
 368                                     (config_bands & BAND_AN))
 369                                         adapter->adhoc_11n_enabled = true;
 370                                 else
 371                                         adapter->adhoc_11n_enabled = false;
 372                         }
 373                 }
 374                 adapter->sec_chan_offset =
 375                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 376                         (channel_type);
 377                 adapter->channel_type = channel_type;
 378         }
 379
 380         wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
 381                   config_bands, adapter->sec_chan_offset, priv->bss_mode);
 382         if (!chan)
 383                 return 0;
 384
 385         memset(&cfp, 0, sizeof(cfp));
 386         cfp.freq = chan->center_freq;
 387         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 388
 389         if (mwifiex_bss_set_channel(priv, &cfp))
 390                 return -EFAULT;
 391
 392         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 393 }
 394
 395 /*
 396  * CFG802.11 operation handler to set channel.
 397  *
 398  * This function can only be used when station is not connected.
 399  */
 400 static int
 401 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 402                              struct ieee80211_channel *chan,
 403                              enum nl80211_channel_type channel_type)
 404 {
 405         struct mwifiex_private *priv;
 406
 407         if (dev)
 408                 priv = mwifiex_netdev_get_priv(dev);
 409         else
 410                 priv = mwifiex_cfg80211_get_priv(wiphy);
 411
 412         if (priv->media_connected) {
 413                 wiphy_err(wiphy, "This setting is valid only when station "
 414                                 "is not connected\n");
 415                 return -EINVAL;
 416         }
 417
 418         return mwifiex_set_rf_channel(priv, chan, channel_type);
 419 }
 420
 421 /*
 422  * This function sets the fragmentation threshold.
 423  *
 424  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 425  * and MWIFIEX_FRAG_MAX_VALUE.
 426  */
 427 static int
 428 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 429 {
 430         int ret;
 431
 432         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 433             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 434                 return -EINVAL;
 435
 436         /* Send request to firmware */
 437         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 438                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 439                                     &frag_thr);
 440
 441         return ret;
 442 }
 443
 444 /*
 445  * This function sets the RTS threshold.
 446
 447  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 448  * and MWIFIEX_RTS_MAX_VALUE.
 449  */
 450 static int
 451 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 452 {
 453         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 454                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 455
 456         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 457                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 458                                     &rts_thr);
 459 }
 460
 461 /*
 462  * CFG802.11 operation handler to set wiphy parameters.
 463  *
 464  * This function can be used to set the RTS threshold and the
 465  * Fragmentation threshold of the driver.
 466  */
 467 static int
 468 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 469 {
 470         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 471         int ret = 0;
 472
 473         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 474                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 475                 if (ret)
 476                         return ret;
 477         }
 478
 479         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 480                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 481
 482         return ret;
 483 }
 484
 485 /*
 486  * CFG802.11 operation handler to change interface type.
 487  */
 488 static int
 489 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 490                                      struct net_device *dev,
 491                                      enum nl80211_iftype type, u32 *flags,
 492                                      struct vif_params *params)
 493 {
 494         int ret;
 495         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 496
 497         if (priv->bss_mode == type) {
 498                 wiphy_warn(wiphy, "already set to required type\n");
 499                 return 0;
 500         }
 501
 502         priv->bss_mode = type;
 503
 504         switch (type) {
 505         case NL80211_IFTYPE_ADHOC:
 506                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 507                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 508                 break;
 509         case NL80211_IFTYPE_STATION:
 510                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 511                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 512                 break;
 513         case NL80211_IFTYPE_UNSPECIFIED:
 514                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 515                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 516                 return 0;
 517         default:
 518                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 519                 return -EINVAL;
 520         }
 521
 522         mwifiex_deauthenticate(priv, NULL);
 523
 524         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 525
 526         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 527                                     HostCmd_ACT_GEN_SET, 0, NULL);
 528
 529         return ret;
 530 }
 531
 532 /*
 533  * This function dumps the station information on a buffer.
 534  *
 535  * The following information are shown -
 536  *      - Total bytes transmitted
 537  *      - Total bytes received
 538  *      - Total packets transmitted
 539  *      - Total packets received
 540  *      - Signal quality level
 541  *      - Transmission rate
 542  */
 543 static int
 544 mwifiex_dump_station_info(struct mwifiex_private *priv,
 545                           struct station_info *sinfo)
 546 {
 547         struct mwifiex_rate_cfg rate;
 548
 549         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 550                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 551                         STATION_INFO_TX_BITRATE |
 552                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 553
 554         /* Get signal information from the firmware */
 555         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 556                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 557                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 558                 return -EFAULT;
 559         }
 560
 561         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 562                 dev_err(priv->adapter->dev, "getting data rate\n");
 563                 return -EFAULT;
 564         }
 565
 566         /* Get DTIM period information from firmware */
 567         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 568                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 569                               &priv->dtim_period);
 570
 571         /*
 572          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 573          * MCS index values for us are 0 to 15.
 574          */
 575         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 576                 sinfo->txrate.mcs = priv->tx_rate;
 577                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 578                 /* 40MHz rate */
 579                 if (priv->tx_htinfo & BIT(1))
 580                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 581                 /* SGI enabled */
 582                 if (priv->tx_htinfo & BIT(2))
 583                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 584         }
 585
 586         sinfo->signal_avg = priv->bcn_rssi_avg;
 587         sinfo->rx_bytes = priv->stats.rx_bytes;
 588         sinfo->tx_bytes = priv->stats.tx_bytes;
 589         sinfo->rx_packets = priv->stats.rx_packets;
 590         sinfo->tx_packets = priv->stats.tx_packets;
 591         sinfo->signal = priv->bcn_rssi_avg;
 592         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 593         sinfo->txrate.legacy = rate.rate * 5;
 594
 595         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 596                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 597                 sinfo->bss_param.flags = 0;
 598                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 599                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 600                         sinfo->bss_param.flags |=
 601                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 602                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 603                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 604                         sinfo->bss_param.flags |=
 605                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 606                 sinfo->bss_param.dtim_period = priv->dtim_period;
 607                 sinfo->bss_param.beacon_interval =
 608                         priv->curr_bss_params.bss_descriptor.beacon_period;
 609         }
 610
 611         return 0;
 612 }
 613
 614 /*
 615  * CFG802.11 operation handler to get station information.
 616  *
 617  * This function only works in connected mode, and dumps the
 618  * requested station information, if available.
 619  */
 620 static int
 621 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 622                              u8 *mac, struct station_info *sinfo)
 623 {
 624         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 625
 626         if (!priv->media_connected)
 627                 return -ENOENT;
 628         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 629                 return -ENOENT;
 630
 631         return mwifiex_dump_station_info(priv, sinfo);
 632 }
 633
 634 /*
 635  * CFG802.11 operation handler to dump station information.
 636  */
 637 static int
 638 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 639                               int idx, u8 *mac, struct station_info *sinfo)
 640 {
 641         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 642
 643         if (!priv->media_connected || idx)
 644                 return -ENOENT;
 645
 646         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
 647
 648         return mwifiex_dump_station_info(priv, sinfo);
 649 }
 650
 651 /* Supported rates to be advertised to the cfg80211 */
 652
 653 static struct ieee80211_rate mwifiex_rates[] = {
 654         {.bitrate = 10, .hw_value = 2, },
 655         {.bitrate = 20, .hw_value = 4, },
 656         {.bitrate = 55, .hw_value = 11, },
 657         {.bitrate = 110, .hw_value = 22, },
 658         {.bitrate = 60, .hw_value = 12, },
 659         {.bitrate = 90, .hw_value = 18, },
 660         {.bitrate = 120, .hw_value = 24, },
 661         {.bitrate = 180, .hw_value = 36, },
 662         {.bitrate = 240, .hw_value = 48, },
 663         {.bitrate = 360, .hw_value = 72, },
 664         {.bitrate = 480, .hw_value = 96, },
 665         {.bitrate = 540, .hw_value = 108, },
 666 };
 667
 668 /* Channel definitions to be advertised to cfg80211 */
 669
 670 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 671         {.center_freq = 2412, .hw_value = 1, },
 672         {.center_freq = 2417, .hw_value = 2, },
 673         {.center_freq = 2422, .hw_value = 3, },
 674         {.center_freq = 2427, .hw_value = 4, },
 675         {.center_freq = 2432, .hw_value = 5, },
 676         {.center_freq = 2437, .hw_value = 6, },
 677         {.center_freq = 2442, .hw_value = 7, },
 678         {.center_freq = 2447, .hw_value = 8, },
 679         {.center_freq = 2452, .hw_value = 9, },
 680         {.center_freq = 2457, .hw_value = 10, },
 681         {.center_freq = 2462, .hw_value = 11, },
 682         {.center_freq = 2467, .hw_value = 12, },
 683         {.center_freq = 2472, .hw_value = 13, },
 684         {.center_freq = 2484, .hw_value = 14, },
 685 };
 686
 687 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 688         .channels = mwifiex_channels_2ghz,
 689         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 690         .bitrates = mwifiex_rates,
 691         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
 692 };
 693
 694 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 695         {.center_freq = 5040, .hw_value = 8, },
 696         {.center_freq = 5060, .hw_value = 12, },
 697         {.center_freq = 5080, .hw_value = 16, },
 698         {.center_freq = 5170, .hw_value = 34, },
 699         {.center_freq = 5190, .hw_value = 38, },
 700         {.center_freq = 5210, .hw_value = 42, },
 701         {.center_freq = 5230, .hw_value = 46, },
 702         {.center_freq = 5180, .hw_value = 36, },
 703         {.center_freq = 5200, .hw_value = 40, },
 704         {.center_freq = 5220, .hw_value = 44, },
 705         {.center_freq = 5240, .hw_value = 48, },
 706         {.center_freq = 5260, .hw_value = 52, },
 707         {.center_freq = 5280, .hw_value = 56, },
 708         {.center_freq = 5300, .hw_value = 60, },
 709         {.center_freq = 5320, .hw_value = 64, },
 710         {.center_freq = 5500, .hw_value = 100, },
 711         {.center_freq = 5520, .hw_value = 104, },
 712         {.center_freq = 5540, .hw_value = 108, },
 713         {.center_freq = 5560, .hw_value = 112, },
 714         {.center_freq = 5580, .hw_value = 116, },
 715         {.center_freq = 5600, .hw_value = 120, },
 716         {.center_freq = 5620, .hw_value = 124, },
 717         {.center_freq = 5640, .hw_value = 128, },
 718         {.center_freq = 5660, .hw_value = 132, },
 719         {.center_freq = 5680, .hw_value = 136, },
 720         {.center_freq = 5700, .hw_value = 140, },
 721         {.center_freq = 5745, .hw_value = 149, },
 722         {.center_freq = 5765, .hw_value = 153, },
 723         {.center_freq = 5785, .hw_value = 157, },
 724         {.center_freq = 5805, .hw_value = 161, },
 725         {.center_freq = 5825, .hw_value = 165, },
 726 };
 727
 728 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 729         .channels = mwifiex_channels_5ghz,
 730         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 731         .bitrates = mwifiex_rates + 4,
 732         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
 733 };
 734
 735
 736 /* Supported crypto cipher suits to be advertised to cfg80211 */
 737
 738 static const u32 mwifiex_cipher_suites[] = {
 739         WLAN_CIPHER_SUITE_WEP40,
 740         WLAN_CIPHER_SUITE_WEP104,
 741         WLAN_CIPHER_SUITE_TKIP,
 742         WLAN_CIPHER_SUITE_CCMP,
 743 };
 744
 745 /*
 746  * CFG802.11 operation handler for setting bit rates.
 747  *
 748  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 749  * Currently only 2.4GHz band is supported.
 750  */
 751 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 752                                 struct net_device *dev,
 753                                 const u8 *peer,
 754                                 const struct cfg80211_bitrate_mask *mask)
 755 {
 756         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 757         int index = 0, mode = 0, i;
 758         struct mwifiex_adapter *adapter = priv->adapter;
 759
 760         /* Currently only 2.4GHz is supported */
 761         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 762                 /*
 763                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 764                  * and from 6 they are OFDM; 802.11G
 765                  */
 766                 if (mwifiex_rates[i].bitrate == 60) {
 767                         index = 1 << i;
 768                         break;
 769                 }
 770         }
 771
 772         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 773                 mode = BAND_B;
 774         } else {
 775                 mode = BAND_G;
 776                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 777                         mode |=  BAND_B;
 778         }
 779
 780         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 781                 adapter->config_bands = mode;
 782                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 783                         adapter->adhoc_start_band = mode;
 784                         adapter->adhoc_11n_enabled = false;
 785                 }
 786         }
 787         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 788         adapter->channel_type = NL80211_CHAN_NO_HT;
 789
 790         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 791                     (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
 792
 793         return 0;
 794 }
 795
 796 /*
 797  * CFG802.11 operation handler for connection quality monitoring.
 798  *
 799  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
 800  * events to FW.
 801  */
 802 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
 803                                                 struct net_device *dev,
 804                                                 s32 rssi_thold, u32 rssi_hyst)
 805 {
 806         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 807         struct mwifiex_ds_misc_subsc_evt subsc_evt;
 808
 809         priv->cqm_rssi_thold = rssi_thold;
 810         priv->cqm_rssi_hyst = rssi_hyst;
 811
 812         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
 813         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
 814
 815         /* Subscribe/unsubscribe low and high rssi events */
 816         if (rssi_thold && rssi_hyst) {
 817                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
 818                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
 819                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
 820                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
 821                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
 822                 return mwifiex_send_cmd_sync(priv,
 823                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 824                                              0, 0, &subsc_evt);
 825         } else {
 826                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
 827                 return mwifiex_send_cmd_sync(priv,
 828                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 829                                              0, 0, &subsc_evt);
 830         }
 831
 832         return 0;
 833 }
 834
 835 /*
 836  * CFG802.11 operation handler for disconnection request.
 837  *
 838  * This function does not work when there is already a disconnection
 839  * procedure going on.
 840  */
 841 static int
 842 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 843                             u16 reason_code)
 844 {
 845         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 846
 847         if (mwifiex_deauthenticate(priv, NULL))
 848                 return -EFAULT;
 849
 850         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 851                 " reason code %d\n", priv->cfg_bssid, reason_code);
 852
 853         memset(priv->cfg_bssid, 0, ETH_ALEN);
 854
 855         return 0;
 856 }
 857
 858 /*
 859  * This function informs the CFG802.11 subsystem of a new IBSS.
 860  *
 861  * The following information are sent to the CFG802.11 subsystem
 862  * to register the new IBSS. If we do not register the new IBSS,
 863  * a kernel panic will result.
 864  *      - SSID
 865  *      - SSID length
 866  *      - BSSID
 867  *      - Channel
 868  */
 869 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 870 {
 871         struct ieee80211_channel *chan;
 872         struct mwifiex_bss_info bss_info;
 873         struct cfg80211_bss *bss;
 874         int ie_len;
 875         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 876         enum ieee80211_band band;
 877
 878         if (mwifiex_get_bss_info(priv, &bss_info))
 879                 return -1;
 880
 881         ie_buf[0] = WLAN_EID_SSID;
 882         ie_buf[1] = bss_info.ssid.ssid_len;
 883
 884         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 885                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
 886         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 887
 888         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 889         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 890                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 891                                                        band));
 892
 893         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 894                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 895                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
 896         cfg80211_put_bss(bss);
 897         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 898
 899         return 0;
 900 }
 901
 902 /*
 903  * This function connects with a BSS.
 904  *
 905  * This function handles both Infra and Ad-Hoc modes. It also performs
 906  * validity checking on the provided parameters, disconnects from the
 907  * current BSS (if any), sets up the association/scan parameters,
 908  * including security settings, and performs specific SSID scan before
 909  * trying to connect.
 910  *
 911  * For Infra mode, the function returns failure if the specified SSID
 912  * is not found in scan table. However, for Ad-Hoc mode, it can create
 913  * the IBSS if it does not exist. On successful completion in either case,
 914  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 915  */
 916 static int
 917 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 918                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 919                        struct cfg80211_connect_params *sme, bool privacy)
 920 {
 921         struct cfg80211_ssid req_ssid;
 922         int ret, auth_type = 0;
 923         struct cfg80211_bss *bss = NULL;
 924         u8 is_scanning_required = 0;
 925
 926         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
 927
 928         req_ssid.ssid_len = ssid_len;
 929         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 930                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 931                 return -EINVAL;
 932         }
 933
 934         memcpy(req_ssid.ssid, ssid, ssid_len);
 935         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 936                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 937                 return -EINVAL;
 938         }
 939
 940         /* disconnect before try to associate */
 941         mwifiex_deauthenticate(priv, NULL);
 942
 943         if (channel)
 944                 ret = mwifiex_set_rf_channel(priv, channel,
 945                                                 priv->adapter->channel_type);
 946
 947         /* As this is new association, clear locally stored
 948          * keys and security related flags */
 949         priv->sec_info.wpa_enabled = false;
 950         priv->sec_info.wpa2_enabled = false;
 951         priv->wep_key_curr_index = 0;
 952         priv->sec_info.encryption_mode = 0;
 953         priv->sec_info.is_authtype_auto = 0;
 954         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
 955
 956         if (mode == NL80211_IFTYPE_ADHOC) {
 957                 /* "privacy" is set only for ad-hoc mode */
 958                 if (privacy) {
 959                         /*
 960                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 961                          * the firmware can find a matching network from the
 962                          * scan. The cfg80211 does not give us the encryption
 963                          * mode at this stage so just setting it to WEP here.
 964                          */
 965                         priv->sec_info.encryption_mode =
 966                                         WLAN_CIPHER_SUITE_WEP104;
 967                         priv->sec_info.authentication_mode =
 968                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 969                 }
 970
 971                 goto done;
 972         }
 973
 974         /* Now handle infra mode. "sme" is valid for infra mode only */
 975         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
 976                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 977                 priv->sec_info.is_authtype_auto = 1;
 978         } else {
 979                 auth_type = sme->auth_type;
 980         }
 981
 982         if (sme->crypto.n_ciphers_pairwise) {
 983                 priv->sec_info.encryption_mode =
 984                                                 sme->crypto.ciphers_pairwise[0];
 985                 priv->sec_info.authentication_mode = auth_type;
 986         }
 987
 988         if (sme->crypto.cipher_group) {
 989                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 990                 priv->sec_info.authentication_mode = auth_type;
 991         }
 992         if (sme->ie)
 993                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 994
 995         if (sme->key) {
 996                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 997                         dev_dbg(priv->adapter->dev,
 998                                 "info: setting wep encryption"
 999                                 " with key len %d\n", sme->key_len);
1000                         priv->wep_key_curr_index = sme->key_idx;
1001                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1002                                                         sme->key_idx, 0);
1003                 }
1004         }
1005 done:
1006         /*
1007          * Scan entries are valid for some time (15 sec). So we can save one
1008          * active scan time if we just try cfg80211_get_bss first. If it fails
1009          * then request scan and cfg80211_get_bss() again for final output.
1010          */
1011         while (1) {
1012                 if (is_scanning_required) {
1013                         /* Do specific SSID scanning */
1014                         if (mwifiex_request_scan(priv, &req_ssid)) {
1015                                 dev_err(priv->adapter->dev, "scan error\n");
1016                                 return -EFAULT;
1017                         }
1018                 }
1019
1020                 /* Find the BSS we want using available scan results */
1021                 if (mode == NL80211_IFTYPE_ADHOC)
1022                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1023                                                bssid, ssid, ssid_len,
1024                                                WLAN_CAPABILITY_IBSS,
1025                                                WLAN_CAPABILITY_IBSS);
1026                 else
1027                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1028                                                bssid, ssid, ssid_len,
1029                                                WLAN_CAPABILITY_ESS,
1030                                                WLAN_CAPABILITY_ESS);
1031
1032                 if (!bss) {
1033                         if (is_scanning_required) {
1034                                 dev_warn(priv->adapter->dev,
1035                                          "assoc: requested bss not found in scan results\n");
1036                                 break;
1037                         }
1038                         is_scanning_required = 1;
1039                 } else {
1040                         dev_dbg(priv->adapter->dev,
1041                                 "info: trying to associate to '%s' bssid %pM\n",
1042                                 (char *) req_ssid.ssid, bss->bssid);
1043                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1044                         break;
1045                 }
1046         }
1047
1048         ret = mwifiex_bss_start(priv, bss, &req_ssid);
1049         if (ret)
1050                 return ret;
1051
1052         if (mode == NL80211_IFTYPE_ADHOC) {
1053                 /* Inform the BSS information to kernel, otherwise
1054                  * kernel will give a panic after successful assoc */
1055                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1056                         return -EFAULT;
1057         }
1058
1059         return ret;
1060 }
1061
1062 /*
1063  * CFG802.11 operation handler for association request.
1064  *
1065  * This function does not work when the current mode is set to Ad-Hoc, or
1066  * when there is already an association procedure going on. The given BSS
1067  * information is used to associate.
1068  */
1069 static int
1070 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1071                          struct cfg80211_connect_params *sme)
1072 {
1073         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1074         int ret = 0;
1075
1076         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1077                 wiphy_err(wiphy, "received infra assoc request "
1078                                 "when station is in ibss mode\n");
1079                 goto done;
1080         }
1081
1082         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1083                   (char *) sme->ssid, sme->bssid);
1084
1085         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1086                                      priv->bss_mode, sme->channel, sme, 0);
1087 done:
1088         if (!ret) {
1089                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1090                                         NULL, 0, WLAN_STATUS_SUCCESS,
1091                                         GFP_KERNEL);
1092                 dev_dbg(priv->adapter->dev,
1093                         "info: associated to bssid %pM successfully\n",
1094                         priv->cfg_bssid);
1095         } else {
1096                 dev_dbg(priv->adapter->dev,
1097                         "info: association to bssid %pM failed\n",
1098                         priv->cfg_bssid);
1099                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1100
1101                 if (ret > 0)
1102                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1103                                                 NULL, 0, NULL, 0, ret,
1104                                                 GFP_KERNEL);
1105                 else
1106                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1107                                                 NULL, 0, NULL, 0,
1108                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1109                                                 GFP_KERNEL);
1110         }
1111
1112         return 0;
1113 }
1114
1115 /*
1116  * CFG802.11 operation handler to join an IBSS.
1117  *
1118  * This function does not work in any mode other than Ad-Hoc, or if
1119  * a join operation is already in progress.
1120  */
1121 static int
1122 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1123                            struct cfg80211_ibss_params *params)
1124 {
1125         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1126         int ret = 0;
1127
1128         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1129                 wiphy_err(wiphy, "request to join ibss received "
1130                                 "when station is not in ibss mode\n");
1131                 goto done;
1132         }
1133
1134         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1135                   (char *) params->ssid, params->bssid);
1136
1137         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1138                                      params->bssid, priv->bss_mode,
1139                                      params->channel, NULL, params->privacy);
1140 done:
1141         if (!ret) {
1142                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1143                 dev_dbg(priv->adapter->dev,
1144                         "info: joined/created adhoc network with bssid"
1145                         " %pM successfully\n", priv->cfg_bssid);
1146         } else {
1147                 dev_dbg(priv->adapter->dev,
1148                         "info: failed creating/joining adhoc network\n");
1149         }
1150
1151         return ret;
1152 }
1153
1154 /*
1155  * CFG802.11 operation handler to leave an IBSS.
1156  *
1157  * This function does not work if a leave operation is
1158  * already in progress.
1159  */
1160 static int
1161 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1162 {
1163         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1164
1165         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1166                   priv->cfg_bssid);
1167         if (mwifiex_deauthenticate(priv, NULL))
1168                 return -EFAULT;
1169
1170         memset(priv->cfg_bssid, 0, ETH_ALEN);
1171
1172         return 0;
1173 }
1174
1175 /*
1176  * CFG802.11 operation handler for scan request.
1177  *
1178  * This function issues a scan request to the firmware based upon
1179  * the user specified scan configuration. On successfull completion,
1180  * it also informs the results.
1181  */
1182 static int
1183 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1184                       struct cfg80211_scan_request *request)
1185 {
1186         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1187         int i, ret;
1188         struct ieee80211_channel *chan;
1189
1190         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1191
1192         if ((request->flags & CFG80211_SCAN_FLAG_TX_ABORT) &&
1193             atomic_read(&priv->wmm.tx_pkts_queued) >=
1194             MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
1195                 dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
1196                 return -EBUSY;
1197         }
1198
1199         priv->scan_request = request;
1200
1201         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1202                                       GFP_KERNEL);
1203         if (!priv->user_scan_cfg) {
1204                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1205                 return -ENOMEM;
1206         }
1207
1208         priv->user_scan_cfg->num_ssids = request->n_ssids;
1209         priv->user_scan_cfg->ssid_list = request->ssids;
1210
1211         if (request->ie && request->ie_len) {
1212                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1213                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1214                                 continue;
1215                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1216                         memcpy(&priv->vs_ie[i].ie, request->ie,
1217                                request->ie_len);
1218                         break;
1219                 }
1220         }
1221
1222         for (i = 0; i < request->n_channels; i++) {
1223                 chan = request->channels[i];
1224                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1225                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1226
1227                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1228                         priv->user_scan_cfg->chan_list[i].scan_type =
1229                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1230                 else
1231                         priv->user_scan_cfg->chan_list[i].scan_type =
1232                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1233
1234                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1235         }
1236
1237         ret = mwifiex_scan_networks(priv, priv->user_scan_cfg);
1238         if (ret) {
1239                 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1240                 return ret;
1241         }
1242
1243         if (request->ie && request->ie_len) {
1244                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1245                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1246                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1247                                 memset(&priv->vs_ie[i].ie, 0,
1248                                        MWIFIEX_MAX_VSIE_LEN);
1249                         }
1250                 }
1251         }
1252         return 0;
1253 }
1254
1255 /*
1256  * This function sets up the CFG802.11 specific HT capability fields
1257  * with default values.
1258  *
1259  * The following default values are set -
1260  *      - HT Supported = True
1261  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1262  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1263  *      - HT Capabilities supported by firmware
1264  *      - MCS information, Rx mask = 0xff
1265  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1266  */
1267 static void
1268 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1269                       struct mwifiex_private *priv)
1270 {
1271         int rx_mcs_supp;
1272         struct ieee80211_mcs_info mcs_set;
1273         u8 *mcs = (u8 *)&mcs_set;
1274         struct mwifiex_adapter *adapter = priv->adapter;
1275
1276         ht_info->ht_supported = true;
1277         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1278         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1279
1280         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1281
1282         /* Fill HT capability information */
1283         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1284                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1285         else
1286                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1287
1288         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1289                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1290         else
1291                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1292
1293         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1294                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1295         else
1296                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1297
1298         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1299                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1300         else
1301                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1302
1303         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1304                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1305         else
1306                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1307
1308         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1309         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1310
1311         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1312         /* Set MCS for 1x1 */
1313         memset(mcs, 0xff, rx_mcs_supp);
1314         /* Clear all the other values */
1315         memset(&mcs[rx_mcs_supp], 0,
1316                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1317         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1318             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1319                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1320                 SETHT_MCS32(mcs_set.rx_mask);
1321
1322         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1323
1324         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1325 }
1326
1327 /*
1328  *  create a new virtual interface with the given name
1329  */
1330 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1331                                             char *name,
1332                                             enum nl80211_iftype type,
1333                                             u32 *flags,
1334                                             struct vif_params *params)
1335 {
1336         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1337         struct mwifiex_adapter *adapter;
1338         struct net_device *dev;
1339         void *mdev_priv;
1340
1341         if (!priv)
1342                 return ERR_PTR(-EFAULT);
1343
1344         adapter = priv->adapter;
1345         if (!adapter)
1346                 return ERR_PTR(-EFAULT);
1347
1348         switch (type) {
1349         case NL80211_IFTYPE_UNSPECIFIED:
1350         case NL80211_IFTYPE_STATION:
1351         case NL80211_IFTYPE_ADHOC:
1352                 if (priv->bss_mode) {
1353                         wiphy_err(wiphy, "cannot create multiple"
1354                                         " station/adhoc interfaces\n");
1355                         return ERR_PTR(-EINVAL);
1356                 }
1357
1358                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1359                         priv->bss_mode = NL80211_IFTYPE_STATION;
1360                 else
1361                         priv->bss_mode = type;
1362
1363                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1364                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1365                 priv->bss_priority = 0;
1366                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1367                 priv->bss_num = 0;
1368
1369                 break;
1370         default:
1371                 wiphy_err(wiphy, "type not supported\n");
1372                 return ERR_PTR(-EINVAL);
1373         }
1374
1375         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1376                               ether_setup, 1);
1377         if (!dev) {
1378                 wiphy_err(wiphy, "no memory available for netdevice\n");
1379                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1380                 return ERR_PTR(-ENOMEM);
1381         }
1382
1383         dev_net_set(dev, wiphy_net(wiphy));
1384         dev->ieee80211_ptr = priv->wdev;
1385         dev->ieee80211_ptr->iftype = priv->bss_mode;
1386         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1387         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1388         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1389
1390         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1391         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1392         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1393
1394         mdev_priv = netdev_priv(dev);
1395         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1396
1397         priv->netdev = dev;
1398         mwifiex_init_priv_params(priv, dev);
1399
1400         SET_NETDEV_DEV(dev, adapter->dev);
1401
1402         /* Register network device */
1403         if (register_netdevice(dev)) {
1404                 wiphy_err(wiphy, "cannot register virtual network device\n");
1405                 free_netdev(dev);
1406                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1407                 return ERR_PTR(-EFAULT);
1408         }
1409
1410         sema_init(&priv->async_sem, 1);
1411         priv->scan_pending_on_block = false;
1412
1413         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1414
1415 #ifdef CONFIG_DEBUG_FS
1416         mwifiex_dev_debugfs_init(priv);
1417 #endif
1418         return dev;
1419 }
1420 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1421
1422 /*
1423  * del_virtual_intf: remove the virtual interface determined by dev
1424  */
1425 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1426 {
1427         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1428
1429 #ifdef CONFIG_DEBUG_FS
1430         mwifiex_dev_debugfs_remove(priv);
1431 #endif
1432
1433         if (!netif_queue_stopped(priv->netdev))
1434                 netif_stop_queue(priv->netdev);
1435
1436         if (netif_carrier_ok(priv->netdev))
1437                 netif_carrier_off(priv->netdev);
1438
1439         if (dev->reg_state == NETREG_REGISTERED)
1440                 unregister_netdevice(dev);
1441
1442         if (dev->reg_state == NETREG_UNREGISTERED)
1443                 free_netdev(dev);
1444
1445         /* Clear the priv in adapter */
1446         priv->netdev = NULL;
1447
1448         priv->media_connected = false;
1449
1450         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1451
1452         return 0;
1453 }
1454 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1455
1456 /* station cfg80211 operations */
1457 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1458         .add_virtual_intf = mwifiex_add_virtual_intf,
1459         .del_virtual_intf = mwifiex_del_virtual_intf,
1460         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1461         .scan = mwifiex_cfg80211_scan,
1462         .connect = mwifiex_cfg80211_connect,
1463         .disconnect = mwifiex_cfg80211_disconnect,
1464         .get_station = mwifiex_cfg80211_get_station,
1465         .dump_station = mwifiex_cfg80211_dump_station,
1466         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1467         .set_channel = mwifiex_cfg80211_set_channel,
1468         .join_ibss = mwifiex_cfg80211_join_ibss,
1469         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1470         .add_key = mwifiex_cfg80211_add_key,
1471         .del_key = mwifiex_cfg80211_del_key,
1472         .set_default_key = mwifiex_cfg80211_set_default_key,
1473         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1474         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1475         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1476         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1477 };
1478
1479 /*
1480  * This function registers the device with CFG802.11 subsystem.
1481  *
1482  * The function creates the wireless device/wiphy, populates it with
1483  * default parameters and handler function pointers, and finally
1484  * registers the device.
1485  */
1486 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1487 {
1488         int ret;
1489         void *wdev_priv;
1490         struct wireless_dev *wdev;
1491         struct ieee80211_sta_ht_cap *ht_info;
1492         u8 *country_code;
1493
1494         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1495         if (!wdev) {
1496                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1497                         __func__);
1498                 return -ENOMEM;
1499         }
1500         wdev->wiphy =
1501                 wiphy_new(&mwifiex_cfg80211_ops,
1502                           sizeof(struct mwifiex_private *));
1503         if (!wdev->wiphy) {
1504                 kfree(wdev);
1505                 return -ENOMEM;
1506         }
1507         wdev->iftype = NL80211_IFTYPE_STATION;
1508         wdev->wiphy->max_scan_ssids = 10;
1509         wdev->wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1510         wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1511                                        BIT(NL80211_IFTYPE_ADHOC);
1512
1513         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1514         ht_info = &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap;
1515         mwifiex_setup_ht_caps(ht_info, priv);
1516
1517         if (priv->adapter->config_bands & BAND_A) {
1518                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1519                 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap;
1520                 mwifiex_setup_ht_caps(ht_info, priv);
1521         } else {
1522                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1523         }
1524
1525         /* Initialize cipher suits */
1526         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1527         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1528
1529         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1530         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1531
1532         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1533         wiphy_apply_custom_regulatory(wdev->wiphy,
1534                                       &mwifiex_world_regdom_custom);
1535
1536         /* Reserve space for mwifiex specific private data for BSS */
1537         wdev->wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1538
1539         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1540
1541         /* Set struct mwifiex_private pointer in wiphy_priv */
1542         wdev_priv = wiphy_priv(wdev->wiphy);
1543
1544         *(unsigned long *) wdev_priv = (unsigned long) priv;
1545
1546         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1547
1548         ret = wiphy_register(wdev->wiphy);
1549         if (ret < 0) {
1550                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1551                         __func__);
1552                 wiphy_free(wdev->wiphy);
1553                 kfree(wdev);
1554                 return ret;
1555         } else {
1556                 dev_dbg(priv->adapter->dev,
1557                         "info: successfully registered wiphy device\n");
1558         }
1559
1560         country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1561         if (country_code)
1562                 dev_info(priv->adapter->dev,
1563                          "ignoring F/W country code %2.2s\n", country_code);
1564
1565         priv->wdev = wdev;
1566
1567         return ret;
1568 }