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_iface_limit mwifiex_ap_sta_limits[] = {
  24         {
  25                 .max = 1, .types = BIT(NL80211_IFTYPE_STATION),
  26         },
  27         {
  28                 .max = 1, .types = BIT(NL80211_IFTYPE_AP),
  29         },
  30 };
  31
  32 static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
  33         .limits = mwifiex_ap_sta_limits,
  34         .num_different_channels = 1,
  35         .n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
  36         .max_interfaces = MWIFIEX_MAX_BSS_NUM,
  37         .beacon_int_infra_match = true,
  38 };
  39
  40 /*
  41  * This function maps the nl802.11 channel type into driver channel type.
  42  *
  43  * The mapping is as follows -
  44  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  45  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  46  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  47  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  48  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  49  */
  50 static u8
  51 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
  52                                                  channel_type)
  53 {
  54         switch (channel_type) {
  55         case NL80211_CHAN_NO_HT:
  56         case NL80211_CHAN_HT20:
  57                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  58         case NL80211_CHAN_HT40PLUS:
  59                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  60         case NL80211_CHAN_HT40MINUS:
  61                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  62         default:
  63                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  64         }
  65 }
  66
  67 /*
  68  * This function checks whether WEP is set.
  69  */
  70 static int
  71 mwifiex_is_alg_wep(u32 cipher)
  72 {
  73         switch (cipher) {
  74         case WLAN_CIPHER_SUITE_WEP40:
  75         case WLAN_CIPHER_SUITE_WEP104:
  76                 return 1;
  77         default:
  78                 break;
  79         }
  80
  81         return 0;
  82 }
  83
  84 /*
  85  * This function retrieves the private structure from kernel wiphy structure.
  86  */
  87 static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
  88 {
  89         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
  90 }
  91
  92 /*
  93  * CFG802.11 operation handler to delete a network key.
  94  */
  95 static int
  96 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
  97                          u8 key_index, bool pairwise, const u8 *mac_addr)
  98 {
  99         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 100         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 101         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 102
 103         if (mwifiex_set_encode(priv, NULL, 0, key_index, peer_mac, 1)) {
 104                 wiphy_err(wiphy, "deleting the crypto keys\n");
 105                 return -EFAULT;
 106         }
 107
 108         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 109         return 0;
 110 }
 111
 112 /*
 113  * CFG802.11 operation handler to set Tx power.
 114  */
 115 static int
 116 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 117                               enum nl80211_tx_power_setting type,
 118                               int mbm)
 119 {
 120         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 121         struct mwifiex_private *priv;
 122         struct mwifiex_power_cfg power_cfg;
 123         int dbm = MBM_TO_DBM(mbm);
 124
 125         if (type == NL80211_TX_POWER_FIXED) {
 126                 power_cfg.is_power_auto = 0;
 127                 power_cfg.power_level = dbm;
 128         } else {
 129                 power_cfg.is_power_auto = 1;
 130         }
 131
 132         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 133
 134         return mwifiex_set_tx_power(priv, &power_cfg);
 135 }
 136
 137 /*
 138  * CFG802.11 operation handler to set Power Save option.
 139  *
 140  * The timeout value, if provided, is currently ignored.
 141  */
 142 static int
 143 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 144                                 struct net_device *dev,
 145                                 bool enabled, int timeout)
 146 {
 147         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 148         u32 ps_mode;
 149
 150         if (timeout)
 151                 wiphy_dbg(wiphy,
 152                           "info: ignore timeout value for IEEE Power Save\n");
 153
 154         ps_mode = enabled;
 155
 156         return mwifiex_drv_set_power(priv, &ps_mode);
 157 }
 158
 159 /*
 160  * CFG802.11 operation handler to set the default network key.
 161  */
 162 static int
 163 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 164                                  u8 key_index, bool unicast,
 165                                  bool multicast)
 166 {
 167         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 168
 169         /* Return if WEP key not configured */
 170         if (!priv->sec_info.wep_enabled)
 171                 return 0;
 172
 173         if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
 174                 priv->wep_key_curr_index = key_index;
 175         } else if (mwifiex_set_encode(priv, NULL, 0, key_index, NULL, 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_netdev_get_priv(netdev);
 192         struct mwifiex_wep_key *wep_key;
 193         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 194         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 195
 196         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP &&
 197             (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 198              params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 199                 if (params->key && params->key_len) {
 200                         wep_key = &priv->wep_key[key_index];
 201                         memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 202                         memcpy(wep_key->key_material, params->key,
 203                                params->key_len);
 204                         wep_key->key_index = key_index;
 205                         wep_key->key_length = params->key_len;
 206                         priv->sec_info.wep_enabled = 1;
 207                 }
 208                 return 0;
 209         }
 210
 211         if (mwifiex_set_encode(priv, params->key, params->key_len,
 212                                key_index, peer_mac, 0)) {
 213                 wiphy_err(wiphy, "crypto keys added\n");
 214                 return -EFAULT;
 215         }
 216
 217         return 0;
 218 }
 219
 220 /*
 221  * This function sends domain information to the firmware.
 222  *
 223  * The following information are passed to the firmware -
 224  *      - Country codes
 225  *      - Sub bands (first channel, number of channels, maximum Tx power)
 226  */
 227 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 228 {
 229         u8 no_of_triplet = 0;
 230         struct ieee80211_country_ie_triplet *t;
 231         u8 no_of_parsed_chan = 0;
 232         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 233         u8 i, flag = 0;
 234         enum ieee80211_band band;
 235         struct ieee80211_supported_band *sband;
 236         struct ieee80211_channel *ch;
 237         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 238         struct mwifiex_private *priv;
 239         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 240
 241         /* Set country code */
 242         domain_info->country_code[0] = adapter->country_code[0];
 243         domain_info->country_code[1] = adapter->country_code[1];
 244         domain_info->country_code[2] = ' ';
 245
 246         band = mwifiex_band_to_radio_type(adapter->config_bands);
 247         if (!wiphy->bands[band]) {
 248                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 249                 return -1;
 250         }
 251
 252         sband = wiphy->bands[band];
 253
 254         for (i = 0; i < sband->n_channels ; i++) {
 255                 ch = &sband->channels[i];
 256                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 257                         continue;
 258
 259                 if (!flag) {
 260                         flag = 1;
 261                         first_chan = (u32) ch->hw_value;
 262                         next_chan = first_chan;
 263                         max_pwr = ch->max_reg_power;
 264                         no_of_parsed_chan = 1;
 265                         continue;
 266                 }
 267
 268                 if (ch->hw_value == next_chan + 1 &&
 269                     ch->max_reg_power == max_pwr) {
 270                         next_chan++;
 271                         no_of_parsed_chan++;
 272                 } else {
 273                         t = &domain_info->triplet[no_of_triplet];
 274                         t->chans.first_channel = first_chan;
 275                         t->chans.num_channels = no_of_parsed_chan;
 276                         t->chans.max_power = max_pwr;
 277                         no_of_triplet++;
 278                         first_chan = (u32) ch->hw_value;
 279                         next_chan = first_chan;
 280                         max_pwr = ch->max_reg_power;
 281                         no_of_parsed_chan = 1;
 282                 }
 283         }
 284
 285         if (flag) {
 286                 t = &domain_info->triplet[no_of_triplet];
 287                 t->chans.first_channel = first_chan;
 288                 t->chans.num_channels = no_of_parsed_chan;
 289                 t->chans.max_power = max_pwr;
 290                 no_of_triplet++;
 291         }
 292
 293         domain_info->no_of_triplet = no_of_triplet;
 294
 295         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 296
 297         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 298                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 299                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 300                 return -1;
 301         }
 302
 303         return 0;
 304 }
 305
 306 /*
 307  * CFG802.11 regulatory domain callback function.
 308  *
 309  * This function is called when the regulatory domain is changed due to the
 310  * following reasons -
 311  *      - Set by driver
 312  *      - Set by system core
 313  *      - Set by user
 314  *      - Set bt Country IE
 315  */
 316 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 317                                 struct regulatory_request *request)
 318 {
 319         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 320
 321         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
 322                   request->alpha2[0], request->alpha2[1]);
 323
 324         memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
 325
 326         switch (request->initiator) {
 327         case NL80211_REGDOM_SET_BY_DRIVER:
 328         case NL80211_REGDOM_SET_BY_CORE:
 329         case NL80211_REGDOM_SET_BY_USER:
 330                 break;
 331                 /* Todo: apply driver specific changes in channel flags based
 332                    on the request initiator if necessary. */
 333         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 334                 break;
 335         }
 336         mwifiex_send_domain_info_cmd_fw(wiphy);
 337
 338         return 0;
 339 }
 340
 341 /*
 342  * This function sets the RF channel.
 343  *
 344  * This function creates multiple IOCTL requests, populates them accordingly
 345  * and issues them to set the band/channel and frequency.
 346  */
 347 static int
 348 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 349                        struct ieee80211_channel *chan,
 350                        enum nl80211_channel_type channel_type)
 351 {
 352         struct mwifiex_chan_freq_power cfp;
 353         u32 config_bands = 0;
 354         struct wiphy *wiphy = priv->wdev->wiphy;
 355         struct mwifiex_adapter *adapter = priv->adapter;
 356
 357         if (chan) {
 358                 /* Set appropriate bands */
 359                 if (chan->band == IEEE80211_BAND_2GHZ) {
 360                         if (channel_type == NL80211_CHAN_NO_HT)
 361                                 if (priv->adapter->config_bands == BAND_B ||
 362                                     priv->adapter->config_bands == BAND_G)
 363                                         config_bands =
 364                                                 priv->adapter->config_bands;
 365                                 else
 366                                         config_bands = BAND_B | BAND_G;
 367                         else
 368                                 config_bands = BAND_B | BAND_G | BAND_GN;
 369                 } else {
 370                         if (channel_type == NL80211_CHAN_NO_HT)
 371                                 config_bands = BAND_A;
 372                         else
 373                                 config_bands = BAND_AN | BAND_A;
 374                 }
 375
 376                 if (!((config_bands | adapter->fw_bands) &
 377                                                 ~adapter->fw_bands)) {
 378                         adapter->config_bands = config_bands;
 379                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 380                                 adapter->adhoc_start_band = config_bands;
 381                                 if ((config_bands & BAND_GN) ||
 382                                     (config_bands & BAND_AN))
 383                                         adapter->adhoc_11n_enabled = true;
 384                                 else
 385                                         adapter->adhoc_11n_enabled = false;
 386                         }
 387                 }
 388                 adapter->sec_chan_offset =
 389                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 390                         (channel_type);
 391                 adapter->channel_type = channel_type;
 392
 393                 mwifiex_send_domain_info_cmd_fw(wiphy);
 394         }
 395
 396         wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
 397                   config_bands, adapter->sec_chan_offset, priv->bss_mode);
 398         if (!chan)
 399                 return 0;
 400
 401         memset(&cfp, 0, sizeof(cfp));
 402         cfp.freq = chan->center_freq;
 403         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 404
 405         if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
 406                 if (mwifiex_bss_set_channel(priv, &cfp))
 407                         return -EFAULT;
 408                 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 409         }
 410
 411         return 0;
 412 }
 413
 414 /*
 415  * This function sets the fragmentation threshold.
 416  *
 417  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 418  * and MWIFIEX_FRAG_MAX_VALUE.
 419  */
 420 static int
 421 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 422 {
 423         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 424             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 425                 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
 426
 427         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 428                                      HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 429                                      &frag_thr);
 430 }
 431
 432 /*
 433  * This function sets the RTS threshold.
 434
 435  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 436  * and MWIFIEX_RTS_MAX_VALUE.
 437  */
 438 static int
 439 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 440 {
 441         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 442                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 443
 444         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 445                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 446                                     &rts_thr);
 447 }
 448
 449 /*
 450  * CFG802.11 operation handler to set wiphy parameters.
 451  *
 452  * This function can be used to set the RTS threshold and the
 453  * Fragmentation threshold of the driver.
 454  */
 455 static int
 456 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 457 {
 458         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 459         struct mwifiex_private *priv;
 460         struct mwifiex_uap_bss_param *bss_cfg;
 461         int ret, bss_started, i;
 462
 463         for (i = 0; i < adapter->priv_num; i++) {
 464                 priv = adapter->priv[i];
 465
 466                 switch (priv->bss_role) {
 467                 case MWIFIEX_BSS_ROLE_UAP:
 468                         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
 469                                           GFP_KERNEL);
 470                         if (!bss_cfg)
 471                                 return -ENOMEM;
 472
 473                         mwifiex_set_sys_config_invalid_data(bss_cfg);
 474
 475                         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 476                                 bss_cfg->rts_threshold = wiphy->rts_threshold;
 477                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 478                                 bss_cfg->frag_threshold = wiphy->frag_threshold;
 479                         if (changed & WIPHY_PARAM_RETRY_LONG)
 480                                 bss_cfg->retry_limit = wiphy->retry_long;
 481
 482                         bss_started = priv->bss_started;
 483
 484                         ret = mwifiex_send_cmd_sync(priv,
 485                                                     HostCmd_CMD_UAP_BSS_STOP,
 486                                                     HostCmd_ACT_GEN_SET, 0,
 487                                                     NULL);
 488                         if (ret) {
 489                                 wiphy_err(wiphy, "Failed to stop the BSS\n");
 490                                 kfree(bss_cfg);
 491                                 return ret;
 492                         }
 493
 494                         ret = mwifiex_send_cmd_async(priv,
 495                                                      HostCmd_CMD_UAP_SYS_CONFIG,
 496                                                      HostCmd_ACT_GEN_SET,
 497                                                      UAP_BSS_PARAMS_I, bss_cfg);
 498
 499                         kfree(bss_cfg);
 500
 501                         if (ret) {
 502                                 wiphy_err(wiphy, "Failed to set bss config\n");
 503                                 return ret;
 504                         }
 505
 506                         if (!bss_started)
 507                                 break;
 508
 509                         ret = mwifiex_send_cmd_async(priv,
 510                                                      HostCmd_CMD_UAP_BSS_START,
 511                                                      HostCmd_ACT_GEN_SET, 0,
 512                                                      NULL);
 513                         if (ret) {
 514                                 wiphy_err(wiphy, "Failed to start BSS\n");
 515                                 return ret;
 516                         }
 517
 518                         break;
 519                 case MWIFIEX_BSS_ROLE_STA:
 520                         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 521                                 ret = mwifiex_set_rts(priv,
 522                                                       wiphy->rts_threshold);
 523                                 if (ret)
 524                                         return ret;
 525                         }
 526                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 527                                 ret = mwifiex_set_frag(priv,
 528                                                        wiphy->frag_threshold);
 529                                 if (ret)
 530                                         return ret;
 531                         }
 532                         break;
 533                 }
 534         }
 535
 536         return 0;
 537 }
 538
 539 /*
 540  * CFG802.11 operation handler to change interface type.
 541  */
 542 static int
 543 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 544                                      struct net_device *dev,
 545                                      enum nl80211_iftype type, u32 *flags,
 546                                      struct vif_params *params)
 547 {
 548         int ret;
 549         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 550
 551         switch (dev->ieee80211_ptr->iftype) {
 552         case NL80211_IFTYPE_ADHOC:
 553                 switch (type) {
 554                 case NL80211_IFTYPE_STATION:
 555                         break;
 556                 case NL80211_IFTYPE_UNSPECIFIED:
 557                         wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
 558                 case NL80211_IFTYPE_ADHOC:      /* This shouldn't happen */
 559                         return 0;
 560                 case NL80211_IFTYPE_AP:
 561                 default:
 562                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 563                                   dev->name, type);
 564                         return -EOPNOTSUPP;
 565                 }
 566                 break;
 567         case NL80211_IFTYPE_STATION:
 568                 switch (type) {
 569                 case NL80211_IFTYPE_ADHOC:
 570                         break;
 571                 case NL80211_IFTYPE_UNSPECIFIED:
 572                         wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
 573                 case NL80211_IFTYPE_STATION:    /* This shouldn't happen */
 574                         return 0;
 575                 case NL80211_IFTYPE_AP:
 576                 default:
 577                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 578                                   dev->name, type);
 579                         return -EOPNOTSUPP;
 580                 }
 581                 break;
 582         case NL80211_IFTYPE_AP:
 583                 switch (type) {
 584                 case NL80211_IFTYPE_UNSPECIFIED:
 585                         wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
 586                 case NL80211_IFTYPE_AP:         /* This shouldn't happen */
 587                         return 0;
 588                 case NL80211_IFTYPE_ADHOC:
 589                 case NL80211_IFTYPE_STATION:
 590                 default:
 591                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 592                                   dev->name, type);
 593                         return -EOPNOTSUPP;
 594                 }
 595                 break;
 596         default:
 597                 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
 598                           dev->name, dev->ieee80211_ptr->iftype);
 599                 return -EOPNOTSUPP;
 600         }
 601
 602         dev->ieee80211_ptr->iftype = type;
 603         priv->bss_mode = type;
 604         mwifiex_deauthenticate(priv, NULL);
 605
 606         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 607
 608         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 609                                     HostCmd_ACT_GEN_SET, 0, NULL);
 610
 611         return ret;
 612 }
 613
 614 /*
 615  * This function dumps the station information on a buffer.
 616  *
 617  * The following information are shown -
 618  *      - Total bytes transmitted
 619  *      - Total bytes received
 620  *      - Total packets transmitted
 621  *      - Total packets received
 622  *      - Signal quality level
 623  *      - Transmission rate
 624  */
 625 static int
 626 mwifiex_dump_station_info(struct mwifiex_private *priv,
 627                           struct station_info *sinfo)
 628 {
 629         struct mwifiex_rate_cfg rate;
 630
 631         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 632                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 633                         STATION_INFO_TX_BITRATE |
 634                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 635
 636         /* Get signal information from the firmware */
 637         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 638                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 639                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 640                 return -EFAULT;
 641         }
 642
 643         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 644                 dev_err(priv->adapter->dev, "getting data rate\n");
 645                 return -EFAULT;
 646         }
 647
 648         /* Get DTIM period information from firmware */
 649         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 650                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 651                               &priv->dtim_period);
 652
 653         /*
 654          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 655          * MCS index values for us are 0 to 7.
 656          */
 657         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
 658                 sinfo->txrate.mcs = priv->tx_rate;
 659                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 660                 /* 40MHz rate */
 661                 if (priv->tx_htinfo & BIT(1))
 662                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 663                 /* SGI enabled */
 664                 if (priv->tx_htinfo & BIT(2))
 665                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 666         }
 667
 668         sinfo->signal_avg = priv->bcn_rssi_avg;
 669         sinfo->rx_bytes = priv->stats.rx_bytes;
 670         sinfo->tx_bytes = priv->stats.tx_bytes;
 671         sinfo->rx_packets = priv->stats.rx_packets;
 672         sinfo->tx_packets = priv->stats.tx_packets;
 673         sinfo->signal = priv->bcn_rssi_avg;
 674         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 675         sinfo->txrate.legacy = rate.rate * 5;
 676
 677         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 678                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 679                 sinfo->bss_param.flags = 0;
 680                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 681                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 682                         sinfo->bss_param.flags |=
 683                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 684                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 685                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 686                         sinfo->bss_param.flags |=
 687                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 688                 sinfo->bss_param.dtim_period = priv->dtim_period;
 689                 sinfo->bss_param.beacon_interval =
 690                         priv->curr_bss_params.bss_descriptor.beacon_period;
 691         }
 692
 693         return 0;
 694 }
 695
 696 /*
 697  * CFG802.11 operation handler to get station information.
 698  *
 699  * This function only works in connected mode, and dumps the
 700  * requested station information, if available.
 701  */
 702 static int
 703 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 704                              u8 *mac, struct station_info *sinfo)
 705 {
 706         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 707
 708         if (!priv->media_connected)
 709                 return -ENOENT;
 710         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 711                 return -ENOENT;
 712
 713         return mwifiex_dump_station_info(priv, sinfo);
 714 }
 715
 716 /*
 717  * CFG802.11 operation handler to dump station information.
 718  */
 719 static int
 720 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 721                               int idx, u8 *mac, struct station_info *sinfo)
 722 {
 723         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 724
 725         if (!priv->media_connected || idx)
 726                 return -ENOENT;
 727
 728         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
 729
 730         return mwifiex_dump_station_info(priv, sinfo);
 731 }
 732
 733 /* Supported rates to be advertised to the cfg80211 */
 734
 735 static struct ieee80211_rate mwifiex_rates[] = {
 736         {.bitrate = 10, .hw_value = 2, },
 737         {.bitrate = 20, .hw_value = 4, },
 738         {.bitrate = 55, .hw_value = 11, },
 739         {.bitrate = 110, .hw_value = 22, },
 740         {.bitrate = 60, .hw_value = 12, },
 741         {.bitrate = 90, .hw_value = 18, },
 742         {.bitrate = 120, .hw_value = 24, },
 743         {.bitrate = 180, .hw_value = 36, },
 744         {.bitrate = 240, .hw_value = 48, },
 745         {.bitrate = 360, .hw_value = 72, },
 746         {.bitrate = 480, .hw_value = 96, },
 747         {.bitrate = 540, .hw_value = 108, },
 748 };
 749
 750 /* Channel definitions to be advertised to cfg80211 */
 751
 752 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 753         {.center_freq = 2412, .hw_value = 1, },
 754         {.center_freq = 2417, .hw_value = 2, },
 755         {.center_freq = 2422, .hw_value = 3, },
 756         {.center_freq = 2427, .hw_value = 4, },
 757         {.center_freq = 2432, .hw_value = 5, },
 758         {.center_freq = 2437, .hw_value = 6, },
 759         {.center_freq = 2442, .hw_value = 7, },
 760         {.center_freq = 2447, .hw_value = 8, },
 761         {.center_freq = 2452, .hw_value = 9, },
 762         {.center_freq = 2457, .hw_value = 10, },
 763         {.center_freq = 2462, .hw_value = 11, },
 764         {.center_freq = 2467, .hw_value = 12, },
 765         {.center_freq = 2472, .hw_value = 13, },
 766         {.center_freq = 2484, .hw_value = 14, },
 767 };
 768
 769 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 770         .channels = mwifiex_channels_2ghz,
 771         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 772         .bitrates = mwifiex_rates,
 773         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
 774 };
 775
 776 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 777         {.center_freq = 5040, .hw_value = 8, },
 778         {.center_freq = 5060, .hw_value = 12, },
 779         {.center_freq = 5080, .hw_value = 16, },
 780         {.center_freq = 5170, .hw_value = 34, },
 781         {.center_freq = 5190, .hw_value = 38, },
 782         {.center_freq = 5210, .hw_value = 42, },
 783         {.center_freq = 5230, .hw_value = 46, },
 784         {.center_freq = 5180, .hw_value = 36, },
 785         {.center_freq = 5200, .hw_value = 40, },
 786         {.center_freq = 5220, .hw_value = 44, },
 787         {.center_freq = 5240, .hw_value = 48, },
 788         {.center_freq = 5260, .hw_value = 52, },
 789         {.center_freq = 5280, .hw_value = 56, },
 790         {.center_freq = 5300, .hw_value = 60, },
 791         {.center_freq = 5320, .hw_value = 64, },
 792         {.center_freq = 5500, .hw_value = 100, },
 793         {.center_freq = 5520, .hw_value = 104, },
 794         {.center_freq = 5540, .hw_value = 108, },
 795         {.center_freq = 5560, .hw_value = 112, },
 796         {.center_freq = 5580, .hw_value = 116, },
 797         {.center_freq = 5600, .hw_value = 120, },
 798         {.center_freq = 5620, .hw_value = 124, },
 799         {.center_freq = 5640, .hw_value = 128, },
 800         {.center_freq = 5660, .hw_value = 132, },
 801         {.center_freq = 5680, .hw_value = 136, },
 802         {.center_freq = 5700, .hw_value = 140, },
 803         {.center_freq = 5745, .hw_value = 149, },
 804         {.center_freq = 5765, .hw_value = 153, },
 805         {.center_freq = 5785, .hw_value = 157, },
 806         {.center_freq = 5805, .hw_value = 161, },
 807         {.center_freq = 5825, .hw_value = 165, },
 808 };
 809
 810 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 811         .channels = mwifiex_channels_5ghz,
 812         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 813         .bitrates = mwifiex_rates + 4,
 814         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
 815 };
 816
 817
 818 /* Supported crypto cipher suits to be advertised to cfg80211 */
 819
 820 static const u32 mwifiex_cipher_suites[] = {
 821         WLAN_CIPHER_SUITE_WEP40,
 822         WLAN_CIPHER_SUITE_WEP104,
 823         WLAN_CIPHER_SUITE_TKIP,
 824         WLAN_CIPHER_SUITE_CCMP,
 825 };
 826
 827 /*
 828  * CFG802.11 operation handler for setting bit rates.
 829  *
 830  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 831  * Currently only 2.4GHz band is supported.
 832  */
 833 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 834                                 struct net_device *dev,
 835                                 const u8 *peer,
 836                                 const struct cfg80211_bitrate_mask *mask)
 837 {
 838         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 839         int index = 0, mode = 0, i;
 840         struct mwifiex_adapter *adapter = priv->adapter;
 841
 842         /* Currently only 2.4GHz is supported */
 843         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 844                 /*
 845                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 846                  * and from 6 they are OFDM; 802.11G
 847                  */
 848                 if (mwifiex_rates[i].bitrate == 60) {
 849                         index = 1 << i;
 850                         break;
 851                 }
 852         }
 853
 854         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 855                 mode = BAND_B;
 856         } else {
 857                 mode = BAND_G;
 858                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 859                         mode |=  BAND_B;
 860         }
 861
 862         if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
 863                 adapter->config_bands = mode;
 864                 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 865                         adapter->adhoc_start_band = mode;
 866                         adapter->adhoc_11n_enabled = false;
 867                 }
 868         }
 869         adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 870         adapter->channel_type = NL80211_CHAN_NO_HT;
 871
 872         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 873                     (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
 874
 875         return 0;
 876 }
 877
 878 /*
 879  * CFG802.11 operation handler for connection quality monitoring.
 880  *
 881  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
 882  * events to FW.
 883  */
 884 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
 885                                                 struct net_device *dev,
 886                                                 s32 rssi_thold, u32 rssi_hyst)
 887 {
 888         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 889         struct mwifiex_ds_misc_subsc_evt subsc_evt;
 890
 891         priv->cqm_rssi_thold = rssi_thold;
 892         priv->cqm_rssi_hyst = rssi_hyst;
 893
 894         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
 895         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
 896
 897         /* Subscribe/unsubscribe low and high rssi events */
 898         if (rssi_thold && rssi_hyst) {
 899                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
 900                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
 901                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
 902                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
 903                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
 904                 return mwifiex_send_cmd_sync(priv,
 905                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 906                                              0, 0, &subsc_evt);
 907         } else {
 908                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
 909                 return mwifiex_send_cmd_sync(priv,
 910                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 911                                              0, 0, &subsc_evt);
 912         }
 913
 914         return 0;
 915 }
 916
 917 /* cfg80211 operation handler for change_beacon.
 918  * Function retrieves and sets modified management IEs to FW.
 919  */
 920 static int mwifiex_cfg80211_change_beacon(struct wiphy *wiphy,
 921                                           struct net_device *dev,
 922                                           struct cfg80211_beacon_data *data)
 923 {
 924         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 925
 926         if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP) {
 927                 wiphy_err(wiphy, "%s: bss_type mismatched\n", __func__);
 928                 return -EINVAL;
 929         }
 930
 931         if (!priv->bss_started) {
 932                 wiphy_err(wiphy, "%s: bss not started\n", __func__);
 933                 return -EINVAL;
 934         }
 935
 936         if (mwifiex_set_mgmt_ies(priv, data)) {
 937                 wiphy_err(wiphy, "%s: setting mgmt ies failed\n", __func__);
 938                 return -EFAULT;
 939         }
 940
 941         return 0;
 942 }
 943
 944 static int
 945 mwifiex_cfg80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
 946 {
 947         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 948         struct mwifiex_private *priv = mwifiex_get_priv(adapter,
 949                                                         MWIFIEX_BSS_ROLE_ANY);
 950         struct mwifiex_ds_ant_cfg ant_cfg;
 951
 952         if (!tx_ant || !rx_ant)
 953                 return -EOPNOTSUPP;
 954
 955         if (adapter->hw_dev_mcs_support != HT_STREAM_2X2) {
 956                 /* Not a MIMO chip. User should provide specific antenna number
 957                  * for Tx/Rx path or enable all antennas for diversity
 958                  */
 959                 if (tx_ant != rx_ant)
 960                         return -EOPNOTSUPP;
 961
 962                 if ((tx_ant & (tx_ant - 1)) &&
 963                     (tx_ant != BIT(adapter->number_of_antenna) - 1))
 964                         return -EOPNOTSUPP;
 965
 966                 if ((tx_ant == BIT(adapter->number_of_antenna) - 1) &&
 967                     (priv->adapter->number_of_antenna > 1)) {
 968                         tx_ant = RF_ANTENNA_AUTO;
 969                         rx_ant = RF_ANTENNA_AUTO;
 970                 }
 971         }
 972
 973         ant_cfg.tx_ant = tx_ant;
 974         ant_cfg.rx_ant = rx_ant;
 975
 976         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_RF_ANTENNA,
 977                                      HostCmd_ACT_GEN_SET, 0, &ant_cfg);
 978 }
 979
 980 /* cfg80211 operation handler for stop ap.
 981  * Function stops BSS running at uAP interface.
 982  */
 983 static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 984 {
 985         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 986
 987         if (mwifiex_del_mgmt_ies(priv))
 988                 wiphy_err(wiphy, "Failed to delete mgmt IEs!\n");
 989
 990         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
 991                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
 992                 wiphy_err(wiphy, "Failed to stop the BSS\n");
 993                 return -1;
 994         }
 995
 996         return 0;
 997 }
 998
 999 /* cfg80211 operation handler for start_ap.
1000  * Function sets beacon period, DTIM period, SSID and security into
1001  * AP config structure.
1002  * AP is configured with these settings and BSS is started.
1003  */
1004 static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
1005                                      struct net_device *dev,
1006                                      struct cfg80211_ap_settings *params)
1007 {
1008         struct mwifiex_uap_bss_param *bss_cfg;
1009         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1010
1011         if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP)
1012                 return -1;
1013         if (mwifiex_set_mgmt_ies(priv, &params->beacon))
1014                 return -1;
1015
1016         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
1017         if (!bss_cfg)
1018                 return -ENOMEM;
1019
1020         mwifiex_set_sys_config_invalid_data(bss_cfg);
1021
1022         if (params->beacon_interval)
1023                 bss_cfg->beacon_period = params->beacon_interval;
1024         if (params->dtim_period)
1025                 bss_cfg->dtim_period = params->dtim_period;
1026
1027         if (params->ssid && params->ssid_len) {
1028                 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
1029                 bss_cfg->ssid.ssid_len = params->ssid_len;
1030         }
1031
1032         switch (params->hidden_ssid) {
1033         case NL80211_HIDDEN_SSID_NOT_IN_USE:
1034                 bss_cfg->bcast_ssid_ctl = 1;
1035                 break;
1036         case NL80211_HIDDEN_SSID_ZERO_LEN:
1037                 bss_cfg->bcast_ssid_ctl = 0;
1038                 break;
1039         case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
1040                 /* firmware doesn't support this type of hidden SSID */
1041         default:
1042                 kfree(bss_cfg);
1043                 return -EINVAL;
1044         }
1045
1046         bss_cfg->channel =
1047             (u8)ieee80211_frequency_to_channel(params->channel->center_freq);
1048         bss_cfg->band_cfg = BAND_CONFIG_MANUAL;
1049
1050         if (mwifiex_set_rf_channel(priv, params->channel,
1051                                    params->channel_type)) {
1052                 kfree(bss_cfg);
1053                 wiphy_err(wiphy, "Failed to set band config information!\n");
1054                 return -1;
1055         }
1056
1057         if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
1058                 kfree(bss_cfg);
1059                 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
1060                 return -1;
1061         }
1062
1063         mwifiex_set_ht_params(priv, bss_cfg, params);
1064
1065         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1066                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1067                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1068                 kfree(bss_cfg);
1069                 return -1;
1070         }
1071
1072         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
1073                                    HostCmd_ACT_GEN_SET,
1074                                    UAP_BSS_PARAMS_I, bss_cfg)) {
1075                 wiphy_err(wiphy, "Failed to set the SSID\n");
1076                 kfree(bss_cfg);
1077                 return -1;
1078         }
1079
1080         kfree(bss_cfg);
1081
1082         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
1083                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
1084                 wiphy_err(wiphy, "Failed to start the BSS\n");
1085                 return -1;
1086         }
1087
1088         if (priv->sec_info.wep_enabled)
1089                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1090         else
1091                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1092
1093         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1094                                   HostCmd_ACT_GEN_SET, 0,
1095                                   &priv->curr_pkt_filter))
1096                 return -1;
1097
1098         return 0;
1099 }
1100
1101 /*
1102  * CFG802.11 operation handler for disconnection request.
1103  *
1104  * This function does not work when there is already a disconnection
1105  * procedure going on.
1106  */
1107 static int
1108 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1109                             u16 reason_code)
1110 {
1111         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1112
1113         if (mwifiex_deauthenticate(priv, NULL))
1114                 return -EFAULT;
1115
1116         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1117                 " reason code %d\n", priv->cfg_bssid, reason_code);
1118
1119         memset(priv->cfg_bssid, 0, ETH_ALEN);
1120
1121         return 0;
1122 }
1123
1124 /*
1125  * This function informs the CFG802.11 subsystem of a new IBSS.
1126  *
1127  * The following information are sent to the CFG802.11 subsystem
1128  * to register the new IBSS. If we do not register the new IBSS,
1129  * a kernel panic will result.
1130  *      - SSID
1131  *      - SSID length
1132  *      - BSSID
1133  *      - Channel
1134  */
1135 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1136 {
1137         struct ieee80211_channel *chan;
1138         struct mwifiex_bss_info bss_info;
1139         struct cfg80211_bss *bss;
1140         int ie_len;
1141         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1142         enum ieee80211_band band;
1143
1144         if (mwifiex_get_bss_info(priv, &bss_info))
1145                 return -1;
1146
1147         ie_buf[0] = WLAN_EID_SSID;
1148         ie_buf[1] = bss_info.ssid.ssid_len;
1149
1150         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1151                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1152         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1153
1154         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1155         chan = __ieee80211_get_channel(priv->wdev->wiphy,
1156                         ieee80211_channel_to_frequency(bss_info.bss_chan,
1157                                                        band));
1158
1159         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1160                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1161                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
1162         cfg80211_put_bss(bss);
1163         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1164
1165         return 0;
1166 }
1167
1168 /*
1169  * This function connects with a BSS.
1170  *
1171  * This function handles both Infra and Ad-Hoc modes. It also performs
1172  * validity checking on the provided parameters, disconnects from the
1173  * current BSS (if any), sets up the association/scan parameters,
1174  * including security settings, and performs specific SSID scan before
1175  * trying to connect.
1176  *
1177  * For Infra mode, the function returns failure if the specified SSID
1178  * is not found in scan table. However, for Ad-Hoc mode, it can create
1179  * the IBSS if it does not exist. On successful completion in either case,
1180  * the function notifies the CFG802.11 subsystem of the new BSS connection.
1181  */
1182 static int
1183 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1184                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1185                        struct cfg80211_connect_params *sme, bool privacy)
1186 {
1187         struct cfg80211_ssid req_ssid;
1188         int ret, auth_type = 0;
1189         struct cfg80211_bss *bss = NULL;
1190         u8 is_scanning_required = 0;
1191
1192         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1193
1194         req_ssid.ssid_len = ssid_len;
1195         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1196                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1197                 return -EINVAL;
1198         }
1199
1200         memcpy(req_ssid.ssid, ssid, ssid_len);
1201         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1202                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1203                 return -EINVAL;
1204         }
1205
1206         /* disconnect before try to associate */
1207         mwifiex_deauthenticate(priv, NULL);
1208
1209         if (channel)
1210                 ret = mwifiex_set_rf_channel(priv, channel,
1211                                                 priv->adapter->channel_type);
1212
1213         /* As this is new association, clear locally stored
1214          * keys and security related flags */
1215         priv->sec_info.wpa_enabled = false;
1216         priv->sec_info.wpa2_enabled = false;
1217         priv->wep_key_curr_index = 0;
1218         priv->sec_info.encryption_mode = 0;
1219         priv->sec_info.is_authtype_auto = 0;
1220         ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
1221
1222         if (mode == NL80211_IFTYPE_ADHOC) {
1223                 /* "privacy" is set only for ad-hoc mode */
1224                 if (privacy) {
1225                         /*
1226                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1227                          * the firmware can find a matching network from the
1228                          * scan. The cfg80211 does not give us the encryption
1229                          * mode at this stage so just setting it to WEP here.
1230                          */
1231                         priv->sec_info.encryption_mode =
1232                                         WLAN_CIPHER_SUITE_WEP104;
1233                         priv->sec_info.authentication_mode =
1234                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1235                 }
1236
1237                 goto done;
1238         }
1239
1240         /* Now handle infra mode. "sme" is valid for infra mode only */
1241         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1242                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1243                 priv->sec_info.is_authtype_auto = 1;
1244         } else {
1245                 auth_type = sme->auth_type;
1246         }
1247
1248         if (sme->crypto.n_ciphers_pairwise) {
1249                 priv->sec_info.encryption_mode =
1250                                                 sme->crypto.ciphers_pairwise[0];
1251                 priv->sec_info.authentication_mode = auth_type;
1252         }
1253
1254         if (sme->crypto.cipher_group) {
1255                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1256                 priv->sec_info.authentication_mode = auth_type;
1257         }
1258         if (sme->ie)
1259                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1260
1261         if (sme->key) {
1262                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1263                         dev_dbg(priv->adapter->dev,
1264                                 "info: setting wep encryption"
1265                                 " with key len %d\n", sme->key_len);
1266                         priv->wep_key_curr_index = sme->key_idx;
1267                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1268                                                  sme->key_idx, NULL, 0);
1269                 }
1270         }
1271 done:
1272         /*
1273          * Scan entries are valid for some time (15 sec). So we can save one
1274          * active scan time if we just try cfg80211_get_bss first. If it fails
1275          * then request scan and cfg80211_get_bss() again for final output.
1276          */
1277         while (1) {
1278                 if (is_scanning_required) {
1279                         /* Do specific SSID scanning */
1280                         if (mwifiex_request_scan(priv, &req_ssid)) {
1281                                 dev_err(priv->adapter->dev, "scan error\n");
1282                                 return -EFAULT;
1283                         }
1284                 }
1285
1286                 /* Find the BSS we want using available scan results */
1287                 if (mode == NL80211_IFTYPE_ADHOC)
1288                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1289                                                bssid, ssid, ssid_len,
1290                                                WLAN_CAPABILITY_IBSS,
1291                                                WLAN_CAPABILITY_IBSS);
1292                 else
1293                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1294                                                bssid, ssid, ssid_len,
1295                                                WLAN_CAPABILITY_ESS,
1296                                                WLAN_CAPABILITY_ESS);
1297
1298                 if (!bss) {
1299                         if (is_scanning_required) {
1300                                 dev_warn(priv->adapter->dev,
1301                                          "assoc: requested bss not found in scan results\n");
1302                                 break;
1303                         }
1304                         is_scanning_required = 1;
1305                 } else {
1306                         dev_dbg(priv->adapter->dev,
1307                                 "info: trying to associate to '%s' bssid %pM\n",
1308                                 (char *) req_ssid.ssid, bss->bssid);
1309                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1310                         break;
1311                 }
1312         }
1313
1314         if (mwifiex_bss_start(priv, bss, &req_ssid))
1315                 return -EFAULT;
1316
1317         if (mode == NL80211_IFTYPE_ADHOC) {
1318                 /* Inform the BSS information to kernel, otherwise
1319                  * kernel will give a panic after successful assoc */
1320                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1321                         return -EFAULT;
1322         }
1323
1324         return ret;
1325 }
1326
1327 /*
1328  * CFG802.11 operation handler for association request.
1329  *
1330  * This function does not work when the current mode is set to Ad-Hoc, or
1331  * when there is already an association procedure going on. The given BSS
1332  * information is used to associate.
1333  */
1334 static int
1335 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1336                          struct cfg80211_connect_params *sme)
1337 {
1338         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1339         int ret = 0;
1340
1341         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1342                 wiphy_err(wiphy, "received infra assoc request "
1343                                 "when station is in ibss mode\n");
1344                 goto done;
1345         }
1346
1347         if (priv->bss_mode == NL80211_IFTYPE_AP) {
1348                 wiphy_err(wiphy, "skip association request for AP interface\n");
1349                 goto done;
1350         }
1351
1352         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1353                   (char *) sme->ssid, sme->bssid);
1354
1355         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1356                                      priv->bss_mode, sme->channel, sme, 0);
1357 done:
1358         if (!ret) {
1359                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1360                                         NULL, 0, WLAN_STATUS_SUCCESS,
1361                                         GFP_KERNEL);
1362                 dev_dbg(priv->adapter->dev,
1363                         "info: associated to bssid %pM successfully\n",
1364                         priv->cfg_bssid);
1365         } else {
1366                 dev_dbg(priv->adapter->dev,
1367                         "info: association to bssid %pM failed\n",
1368                         priv->cfg_bssid);
1369                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1370         }
1371
1372         return ret;
1373 }
1374
1375 /*
1376  * CFG802.11 operation handler to join an IBSS.
1377  *
1378  * This function does not work in any mode other than Ad-Hoc, or if
1379  * a join operation is already in progress.
1380  */
1381 static int
1382 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1383                            struct cfg80211_ibss_params *params)
1384 {
1385         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1386         int ret = 0;
1387
1388         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1389                 wiphy_err(wiphy, "request to join ibss received "
1390                                 "when station is not in ibss mode\n");
1391                 goto done;
1392         }
1393
1394         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1395                   (char *) params->ssid, params->bssid);
1396
1397         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1398                                      params->bssid, priv->bss_mode,
1399                                      params->channel, NULL, params->privacy);
1400 done:
1401         if (!ret) {
1402                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1403                 dev_dbg(priv->adapter->dev,
1404                         "info: joined/created adhoc network with bssid"
1405                         " %pM successfully\n", priv->cfg_bssid);
1406         } else {
1407                 dev_dbg(priv->adapter->dev,
1408                         "info: failed creating/joining adhoc network\n");
1409         }
1410
1411         return ret;
1412 }
1413
1414 /*
1415  * CFG802.11 operation handler to leave an IBSS.
1416  *
1417  * This function does not work if a leave operation is
1418  * already in progress.
1419  */
1420 static int
1421 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1422 {
1423         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1424
1425         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1426                   priv->cfg_bssid);
1427         if (mwifiex_deauthenticate(priv, NULL))
1428                 return -EFAULT;
1429
1430         memset(priv->cfg_bssid, 0, ETH_ALEN);
1431
1432         return 0;
1433 }
1434
1435 /*
1436  * CFG802.11 operation handler for scan request.
1437  *
1438  * This function issues a scan request to the firmware based upon
1439  * the user specified scan configuration. On successfull completion,
1440  * it also informs the results.
1441  */
1442 static int
1443 mwifiex_cfg80211_scan(struct wiphy *wiphy,
1444                       struct cfg80211_scan_request *request)
1445 {
1446         struct net_device *dev = request->wdev->netdev;
1447         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1448         int i;
1449         struct ieee80211_channel *chan;
1450
1451         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1452
1453         priv->scan_request = request;
1454
1455         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1456                                       GFP_KERNEL);
1457         if (!priv->user_scan_cfg) {
1458                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1459                 return -ENOMEM;
1460         }
1461
1462         priv->user_scan_cfg->num_ssids = request->n_ssids;
1463         priv->user_scan_cfg->ssid_list = request->ssids;
1464
1465         if (request->ie && request->ie_len) {
1466                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1467                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1468                                 continue;
1469                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1470                         memcpy(&priv->vs_ie[i].ie, request->ie,
1471                                request->ie_len);
1472                         break;
1473                 }
1474         }
1475
1476         for (i = 0; i < request->n_channels; i++) {
1477                 chan = request->channels[i];
1478                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1479                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1480
1481                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1482                         priv->user_scan_cfg->chan_list[i].scan_type =
1483                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1484                 else
1485                         priv->user_scan_cfg->chan_list[i].scan_type =
1486                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1487
1488                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1489         }
1490         if (mwifiex_scan_networks(priv, priv->user_scan_cfg))
1491                 return -EFAULT;
1492
1493         if (request->ie && request->ie_len) {
1494                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1495                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1496                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1497                                 memset(&priv->vs_ie[i].ie, 0,
1498                                        MWIFIEX_MAX_VSIE_LEN);
1499                         }
1500                 }
1501         }
1502         return 0;
1503 }
1504
1505 /*
1506  * This function sets up the CFG802.11 specific HT capability fields
1507  * with default values.
1508  *
1509  * The following default values are set -
1510  *      - HT Supported = True
1511  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1512  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1513  *      - HT Capabilities supported by firmware
1514  *      - MCS information, Rx mask = 0xff
1515  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1516  */
1517 static void
1518 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1519                       struct mwifiex_private *priv)
1520 {
1521         int rx_mcs_supp;
1522         struct ieee80211_mcs_info mcs_set;
1523         u8 *mcs = (u8 *)&mcs_set;
1524         struct mwifiex_adapter *adapter = priv->adapter;
1525
1526         ht_info->ht_supported = true;
1527         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1528         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1529
1530         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1531
1532         /* Fill HT capability information */
1533         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1534                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1535         else
1536                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1537
1538         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1539                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1540         else
1541                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1542
1543         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1544                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1545         else
1546                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1547
1548         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1549                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1550         else
1551                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1552
1553         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1554                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1555         else
1556                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1557
1558         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1559         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1560
1561         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1562         /* Set MCS for 1x1 */
1563         memset(mcs, 0xff, rx_mcs_supp);
1564         /* Clear all the other values */
1565         memset(&mcs[rx_mcs_supp], 0,
1566                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1567         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1568             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1569                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1570                 SETHT_MCS32(mcs_set.rx_mask);
1571
1572         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1573
1574         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1575 }
1576
1577 /*
1578  *  create a new virtual interface with the given name
1579  */
1580 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1581                                               char *name,
1582                                               enum nl80211_iftype type,
1583                                               u32 *flags,
1584                                               struct vif_params *params)
1585 {
1586         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1587         struct mwifiex_private *priv;
1588         struct net_device *dev;
1589         void *mdev_priv;
1590         struct wireless_dev *wdev;
1591
1592         if (!adapter)
1593                 return ERR_PTR(-EFAULT);
1594
1595         switch (type) {
1596         case NL80211_IFTYPE_UNSPECIFIED:
1597         case NL80211_IFTYPE_STATION:
1598         case NL80211_IFTYPE_ADHOC:
1599                 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1600                 if (priv->bss_mode) {
1601                         wiphy_err(wiphy,
1602                                   "cannot create multiple sta/adhoc ifaces\n");
1603                         return ERR_PTR(-EINVAL);
1604                 }
1605
1606                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1607                 if (!wdev)
1608                         return ERR_PTR(-ENOMEM);
1609
1610                 wdev->wiphy = wiphy;
1611                 priv->wdev = wdev;
1612                 wdev->iftype = NL80211_IFTYPE_STATION;
1613
1614                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1615                         priv->bss_mode = NL80211_IFTYPE_STATION;
1616                 else
1617                         priv->bss_mode = type;
1618
1619                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1620                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1621                 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1622                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1623                 priv->bss_num = 0;
1624
1625                 break;
1626         case NL80211_IFTYPE_AP:
1627                 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1628
1629                 if (priv->bss_mode) {
1630                         wiphy_err(wiphy, "Can't create multiple AP interfaces");
1631                         return ERR_PTR(-EINVAL);
1632                 }
1633
1634                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1635                 if (!wdev)
1636                         return ERR_PTR(-ENOMEM);
1637
1638                 priv->wdev = wdev;
1639                 wdev->wiphy = wiphy;
1640                 wdev->iftype = NL80211_IFTYPE_AP;
1641
1642                 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1643                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1644                 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1645                 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1646                 priv->bss_started = 0;
1647                 priv->bss_num = 0;
1648                 priv->bss_mode = type;
1649
1650                 break;
1651         default:
1652                 wiphy_err(wiphy, "type not supported\n");
1653                 return ERR_PTR(-EINVAL);
1654         }
1655
1656         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1657                               ether_setup, 1);
1658         if (!dev) {
1659                 wiphy_err(wiphy, "no memory available for netdevice\n");
1660                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1661                 return ERR_PTR(-ENOMEM);
1662         }
1663
1664         mwifiex_init_priv_params(priv, dev);
1665         priv->netdev = dev;
1666
1667         mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1668
1669         if (adapter->config_bands & BAND_A)
1670                 mwifiex_setup_ht_caps(
1671                         &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1672
1673         dev_net_set(dev, wiphy_net(wiphy));
1674         dev->ieee80211_ptr = priv->wdev;
1675         dev->ieee80211_ptr->iftype = priv->bss_mode;
1676         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1677         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1678         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1679
1680         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1681         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1682         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1683
1684         mdev_priv = netdev_priv(dev);
1685         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1686
1687         SET_NETDEV_DEV(dev, adapter->dev);
1688
1689         /* Register network device */
1690         if (register_netdevice(dev)) {
1691                 wiphy_err(wiphy, "cannot register virtual network device\n");
1692                 free_netdev(dev);
1693                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1694                 return ERR_PTR(-EFAULT);
1695         }
1696
1697         sema_init(&priv->async_sem, 1);
1698         priv->scan_pending_on_block = false;
1699
1700         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1701
1702 #ifdef CONFIG_DEBUG_FS
1703         mwifiex_dev_debugfs_init(priv);
1704 #endif
1705         return wdev;
1706 }
1707 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1708
1709 /*
1710  * del_virtual_intf: remove the virtual interface determined by dev
1711  */
1712 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
1713 {
1714         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
1715
1716 #ifdef CONFIG_DEBUG_FS
1717         mwifiex_dev_debugfs_remove(priv);
1718 #endif
1719
1720         if (!netif_queue_stopped(priv->netdev))
1721                 netif_stop_queue(priv->netdev);
1722
1723         if (netif_carrier_ok(priv->netdev))
1724                 netif_carrier_off(priv->netdev);
1725
1726         if (wdev->netdev->reg_state == NETREG_REGISTERED)
1727                 unregister_netdevice(wdev->netdev);
1728
1729         if (wdev->netdev->reg_state == NETREG_UNREGISTERED)
1730                 free_netdev(wdev->netdev);
1731
1732         /* Clear the priv in adapter */
1733         priv->netdev = NULL;
1734
1735         priv->media_connected = false;
1736
1737         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1738
1739         return 0;
1740 }
1741 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1742
1743 /* station cfg80211 operations */
1744 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1745         .add_virtual_intf = mwifiex_add_virtual_intf,
1746         .del_virtual_intf = mwifiex_del_virtual_intf,
1747         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1748         .scan = mwifiex_cfg80211_scan,
1749         .connect = mwifiex_cfg80211_connect,
1750         .disconnect = mwifiex_cfg80211_disconnect,
1751         .get_station = mwifiex_cfg80211_get_station,
1752         .dump_station = mwifiex_cfg80211_dump_station,
1753         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1754         .join_ibss = mwifiex_cfg80211_join_ibss,
1755         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1756         .add_key = mwifiex_cfg80211_add_key,
1757         .del_key = mwifiex_cfg80211_del_key,
1758         .set_default_key = mwifiex_cfg80211_set_default_key,
1759         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1760         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1761         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1762         .start_ap = mwifiex_cfg80211_start_ap,
1763         .stop_ap = mwifiex_cfg80211_stop_ap,
1764         .change_beacon = mwifiex_cfg80211_change_beacon,
1765         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1766         .set_antenna = mwifiex_cfg80211_set_antenna,
1767 };
1768
1769 /*
1770  * This function registers the device with CFG802.11 subsystem.
1771  *
1772  * The function creates the wireless device/wiphy, populates it with
1773  * default parameters and handler function pointers, and finally
1774  * registers the device.
1775  */
1776
1777 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1778 {
1779         int ret;
1780         void *wdev_priv;
1781         struct wiphy *wiphy;
1782         struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1783         u8 *country_code;
1784
1785         /* create a new wiphy for use with cfg80211 */
1786         wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1787                           sizeof(struct mwifiex_adapter *));
1788         if (!wiphy) {
1789                 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1790                 return -ENOMEM;
1791         }
1792         wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1793         wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1794         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1795                                  BIT(NL80211_IFTYPE_ADHOC) |
1796                                  BIT(NL80211_IFTYPE_AP);
1797
1798         wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1799         if (adapter->config_bands & BAND_A)
1800                 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1801         else
1802                 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1803
1804         wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1805         wiphy->n_iface_combinations = 1;
1806
1807         /* Initialize cipher suits */
1808         wiphy->cipher_suites = mwifiex_cipher_suites;
1809         wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1810
1811         memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1812         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1813         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
1814                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
1815
1816         wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
1817                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2;
1818
1819         wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
1820         wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
1821
1822         /* Reserve space for mwifiex specific private data for BSS */
1823         wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1824
1825         wiphy->reg_notifier = mwifiex_reg_notifier;
1826
1827         /* Set struct mwifiex_adapter pointer in wiphy_priv */
1828         wdev_priv = wiphy_priv(wiphy);
1829         *(unsigned long *)wdev_priv = (unsigned long)adapter;
1830
1831         set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1832
1833         ret = wiphy_register(wiphy);
1834         if (ret < 0) {
1835                 dev_err(adapter->dev,
1836                         "%s: wiphy_register failed: %d\n", __func__, ret);
1837                 wiphy_free(wiphy);
1838                 return ret;
1839         }
1840         country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1841         if (country_code && regulatory_hint(wiphy, country_code))
1842                 dev_err(adapter->dev, "regulatory_hint() failed\n");
1843
1844         adapter->wiphy = wiphy;
1845         return ret;
1846 }