drivers/net/wireless/mwifiex/cfg80211.c

   1 /*
   2  * Marvell Wireless LAN device driver: CFG80211
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "cfg80211.h"
  21 #include "main.h"
  22
  23 /*
  24  * This function maps the nl802.11 channel type into driver channel type.
  25  *
  26  * The mapping is as follows -
  27  *      NL80211_CHAN_NO_HT     -> NO_SEC_CHANNEL
  28  *      NL80211_CHAN_HT20      -> NO_SEC_CHANNEL
  29  *      NL80211_CHAN_HT40PLUS  -> SEC_CHANNEL_ABOVE
  30  *      NL80211_CHAN_HT40MINUS -> SEC_CHANNEL_BELOW
  31  *      Others                 -> NO_SEC_CHANNEL
  32  */
  33 static int
  34 mwifiex_cfg80211_channel_type_to_mwifiex_channels(enum nl80211_channel_type
  35                                                   channel_type)
  36 {
  37         switch (channel_type) {
  38         case NL80211_CHAN_NO_HT:
  39         case NL80211_CHAN_HT20:
  40                 return NO_SEC_CHANNEL;
  41         case NL80211_CHAN_HT40PLUS:
  42                 return SEC_CHANNEL_ABOVE;
  43         case NL80211_CHAN_HT40MINUS:
  44                 return SEC_CHANNEL_BELOW;
  45         default:
  46                 return NO_SEC_CHANNEL;
  47         }
  48 }
  49
  50 /*
  51  * This function maps the driver channel type into nl802.11 channel type.
  52  *
  53  * The mapping is as follows -
  54  *      NO_SEC_CHANNEL      -> NL80211_CHAN_HT20
  55  *      SEC_CHANNEL_ABOVE   -> NL80211_CHAN_HT40PLUS
  56  *      SEC_CHANNEL_BELOW   -> NL80211_CHAN_HT40MINUS
  57  *      Others              -> NL80211_CHAN_HT20
  58  */
  59 static enum nl80211_channel_type
  60 mwifiex_channels_to_cfg80211_channel_type(int channel_type)
  61 {
  62         switch (channel_type) {
  63         case NO_SEC_CHANNEL:
  64                 return NL80211_CHAN_HT20;
  65         case SEC_CHANNEL_ABOVE:
  66                 return NL80211_CHAN_HT40PLUS;
  67         case SEC_CHANNEL_BELOW:
  68                 return NL80211_CHAN_HT40MINUS;
  69         default:
  70                 return NL80211_CHAN_HT20;
  71         }
  72 }
  73
  74 /*
  75  * This function checks whether WEP is set.
  76  */
  77 static int
  78 mwifiex_is_alg_wep(u32 cipher)
  79 {
  80         switch (cipher) {
  81         case WLAN_CIPHER_SUITE_WEP40:
  82         case WLAN_CIPHER_SUITE_WEP104:
  83                 return 1;
  84         default:
  85                 break;
  86         }
  87
  88         return 0;
  89 }
  90
  91 /*
  92  * This function retrieves the private structure from kernel wiphy structure.
  93  */
  94 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
  95 {
  96         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
  97 }
  98
  99 /*
 100  * CFG802.11 operation handler to delete a network key.
 101  */
 102 static int
 103 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 104                          u8 key_index, bool pairwise, const u8 *mac_addr)
 105 {
 106         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 107
 108         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
 109                 wiphy_err(wiphy, "deleting the crypto keys\n");
 110                 return -EFAULT;
 111         }
 112
 113         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 114         return 0;
 115 }
 116
 117 /*
 118  * CFG802.11 operation handler to set Tx power.
 119  */
 120 static int
 121 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 122                               enum nl80211_tx_power_setting type,
 123                               int mbm)
 124 {
 125         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 126         struct mwifiex_power_cfg power_cfg;
 127         int dbm = MBM_TO_DBM(mbm);
 128
 129         if (type == NL80211_TX_POWER_FIXED) {
 130                 power_cfg.is_power_auto = 0;
 131                 power_cfg.power_level = dbm;
 132         } else {
 133                 power_cfg.is_power_auto = 1;
 134         }
 135
 136         return mwifiex_set_tx_power(priv, &power_cfg);
 137 }
 138
 139 /*
 140  * CFG802.11 operation handler to set Power Save option.
 141  *
 142  * The timeout value, if provided, is currently ignored.
 143  */
 144 static int
 145 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 146                                 struct net_device *dev,
 147                                 bool enabled, int timeout)
 148 {
 149         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 150         u32 ps_mode;
 151
 152         if (timeout)
 153                 wiphy_dbg(wiphy,
 154                         "info: ignoring the timeout value"
 155                         " for IEEE power save\n");
 156
 157         ps_mode = enabled;
 158
 159         return mwifiex_drv_set_power(priv, &ps_mode);
 160 }
 161
 162 /*
 163  * CFG802.11 operation handler to set the default network key.
 164  */
 165 static int
 166 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 167                                  u8 key_index, bool unicast,
 168                                  bool multicast)
 169 {
 170         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 171
 172         /* Return if WEP key not configured */
 173         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 174                 return 0;
 175
 176         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 177                 wiphy_err(wiphy, "set default Tx key index\n");
 178                 return -EFAULT;
 179         }
 180
 181         return 0;
 182 }
 183
 184 /*
 185  * CFG802.11 operation handler to add a network key.
 186  */
 187 static int
 188 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 189                          u8 key_index, bool pairwise, const u8 *mac_addr,
 190                          struct key_params *params)
 191 {
 192         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 193
 194         if (mwifiex_set_encode(priv, params->key, params->key_len,
 195                                                         key_index, 0)) {
 196                 wiphy_err(wiphy, "crypto keys added\n");
 197                 return -EFAULT;
 198         }
 199
 200         return 0;
 201 }
 202
 203 /*
 204  * This function sends domain information to the firmware.
 205  *
 206  * The following information are passed to the firmware -
 207  *      - Country codes
 208  *      - Sub bands (first channel, number of channels, maximum Tx power)
 209  */
 210 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 211 {
 212         u8 no_of_triplet = 0;
 213         struct ieee80211_country_ie_triplet *t;
 214         u8 no_of_parsed_chan = 0;
 215         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 216         u8 i, flag = 0;
 217         enum ieee80211_band band;
 218         struct ieee80211_supported_band *sband;
 219         struct ieee80211_channel *ch;
 220         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 221         struct mwifiex_adapter *adapter = priv->adapter;
 222         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 223
 224         /* Set country code */
 225         domain_info->country_code[0] = priv->country_code[0];
 226         domain_info->country_code[1] = priv->country_code[1];
 227         domain_info->country_code[2] = ' ';
 228
 229         band = mwifiex_band_to_radio_type(adapter->config_bands);
 230         if (!wiphy->bands[band]) {
 231                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 232                 return -1;
 233         }
 234
 235         sband = wiphy->bands[band];
 236
 237         for (i = 0; i < sband->n_channels ; i++) {
 238                 ch = &sband->channels[i];
 239                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 240                         continue;
 241
 242                 if (!flag) {
 243                         flag = 1;
 244                         first_chan = (u32) ch->hw_value;
 245                         next_chan = first_chan;
 246                         max_pwr = ch->max_power;
 247                         no_of_parsed_chan = 1;
 248                         continue;
 249                 }
 250
 251                 if (ch->hw_value == next_chan + 1 &&
 252                                 ch->max_power == max_pwr) {
 253                         next_chan++;
 254                         no_of_parsed_chan++;
 255                 } else {
 256                         t = &domain_info->triplet[no_of_triplet];
 257                         t->chans.first_channel = first_chan;
 258                         t->chans.num_channels = no_of_parsed_chan;
 259                         t->chans.max_power = max_pwr;
 260                         no_of_triplet++;
 261                         first_chan = (u32) ch->hw_value;
 262                         next_chan = first_chan;
 263                         max_pwr = ch->max_power;
 264                         no_of_parsed_chan = 1;
 265                 }
 266         }
 267
 268         if (flag) {
 269                 t = &domain_info->triplet[no_of_triplet];
 270                 t->chans.first_channel = first_chan;
 271                 t->chans.num_channels = no_of_parsed_chan;
 272                 t->chans.max_power = max_pwr;
 273                 no_of_triplet++;
 274         }
 275
 276         domain_info->no_of_triplet = no_of_triplet;
 277
 278         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 279                                      HostCmd_ACT_GEN_SET, 0, NULL)) {
 280                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 281                 return -1;
 282         }
 283
 284         return 0;
 285 }
 286
 287 /*
 288  * CFG802.11 regulatory domain callback function.
 289  *
 290  * This function is called when the regulatory domain is changed due to the
 291  * following reasons -
 292  *      - Set by driver
 293  *      - Set by system core
 294  *      - Set by user
 295  *      - Set bt Country IE
 296  */
 297 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 298                 struct regulatory_request *request)
 299 {
 300         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 301
 302         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 303                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 304
 305         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 306
 307         switch (request->initiator) {
 308         case NL80211_REGDOM_SET_BY_DRIVER:
 309         case NL80211_REGDOM_SET_BY_CORE:
 310         case NL80211_REGDOM_SET_BY_USER:
 311                 break;
 312                 /* Todo: apply driver specific changes in channel flags based
 313                    on the request initiator if necessary. */
 314         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 315                 break;
 316         }
 317         mwifiex_send_domain_info_cmd_fw(wiphy);
 318
 319         return 0;
 320 }
 321
 322 /*
 323  * This function sets the RF channel.
 324  *
 325  * This function creates multiple IOCTL requests, populates them accordingly
 326  * and issues them to set the band/channel and frequency.
 327  */
 328 static int
 329 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 330                        struct ieee80211_channel *chan,
 331                        enum nl80211_channel_type channel_type)
 332 {
 333         struct mwifiex_chan_freq_power cfp;
 334         struct mwifiex_ds_band_cfg band_cfg;
 335         u32 config_bands = 0;
 336         struct wiphy *wiphy = priv->wdev->wiphy;
 337
 338         if (chan) {
 339                 memset(&band_cfg, 0, sizeof(band_cfg));
 340                 /* Set appropriate bands */
 341                 if (chan->band == IEEE80211_BAND_2GHZ)
 342                         config_bands = BAND_B | BAND_G | BAND_GN;
 343                 else
 344                         config_bands = BAND_AN | BAND_A;
 345                 if (priv->bss_mode == NL80211_IFTYPE_STATION
 346                     || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
 347                         band_cfg.config_bands = config_bands;
 348                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 349                         band_cfg.config_bands = config_bands;
 350                         band_cfg.adhoc_start_band = config_bands;
 351                 }
 352
 353                 band_cfg.sec_chan_offset =
 354                         mwifiex_cfg80211_channel_type_to_mwifiex_channels
 355                         (channel_type);
 356
 357                 if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
 358                         return -EFAULT;
 359
 360                 mwifiex_send_domain_info_cmd_fw(wiphy);
 361         }
 362
 363         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 364                 "mode %d\n", config_bands, band_cfg.sec_chan_offset,
 365                 priv->bss_mode);
 366         if (!chan)
 367                 return 0;
 368
 369         memset(&cfp, 0, sizeof(cfp));
 370         cfp.freq = chan->center_freq;
 371         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 372
 373         if (mwifiex_bss_set_channel(priv, &cfp))
 374                 return -EFAULT;
 375
 376         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 377 }
 378
 379 /*
 380  * CFG802.11 operation handler to set channel.
 381  *
 382  * This function can only be used when station is not connected.
 383  */
 384 static int
 385 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 386                              struct ieee80211_channel *chan,
 387                              enum nl80211_channel_type channel_type)
 388 {
 389         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 390
 391         if (priv->media_connected) {
 392                 wiphy_err(wiphy, "This setting is valid only when station "
 393                                 "is not connected\n");
 394                 return -EINVAL;
 395         }
 396
 397         return mwifiex_set_rf_channel(priv, chan, channel_type);
 398 }
 399
 400 /*
 401  * This function sets the fragmentation threshold.
 402  *
 403  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 404  * and MWIFIEX_FRAG_MAX_VALUE.
 405  */
 406 static int
 407 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 408 {
 409         int ret;
 410
 411         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 412             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 413                 return -EINVAL;
 414
 415         /* Send request to firmware */
 416         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 417                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 418                                     &frag_thr);
 419
 420         return ret;
 421 }
 422
 423 /*
 424  * This function sets the RTS threshold.
 425
 426  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 427  * and MWIFIEX_RTS_MAX_VALUE.
 428  */
 429 static int
 430 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 431 {
 432         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 433                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 434
 435         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 436                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 437                                     &rts_thr);
 438 }
 439
 440 /*
 441  * CFG802.11 operation handler to set wiphy parameters.
 442  *
 443  * This function can be used to set the RTS threshold and the
 444  * Fragmentation threshold of the driver.
 445  */
 446 static int
 447 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 448 {
 449         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 450         int ret = 0;
 451
 452         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 453                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 454                 if (ret)
 455                         return ret;
 456         }
 457
 458         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 459                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 460
 461         return ret;
 462 }
 463
 464 /*
 465  * CFG802.11 operation handler to change interface type.
 466  */
 467 static int
 468 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 469                                      struct net_device *dev,
 470                                      enum nl80211_iftype type, u32 *flags,
 471                                      struct vif_params *params)
 472 {
 473         int ret;
 474         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 475
 476         if (priv->bss_mode == type) {
 477                 wiphy_warn(wiphy, "already set to required type\n");
 478                 return 0;
 479         }
 480
 481         priv->bss_mode = type;
 482
 483         switch (type) {
 484         case NL80211_IFTYPE_ADHOC:
 485                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 486                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 487                 break;
 488         case NL80211_IFTYPE_STATION:
 489                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 490                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 491                 break;
 492         case NL80211_IFTYPE_UNSPECIFIED:
 493                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 494                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 495                 return 0;
 496         default:
 497                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 498                 return -EINVAL;
 499         }
 500
 501         mwifiex_deauthenticate(priv, NULL);
 502
 503         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 504
 505         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 506                                     HostCmd_ACT_GEN_SET, 0, NULL);
 507
 508         return ret;
 509 }
 510
 511 /*
 512  * This function dumps the station information on a buffer.
 513  *
 514  * The following information are shown -
 515  *      - Total bytes transmitted
 516  *      - Total bytes received
 517  *      - Total packets transmitted
 518  *      - Total packets received
 519  *      - Signal quality level
 520  *      - Transmission rate
 521  */
 522 static int
 523 mwifiex_dump_station_info(struct mwifiex_private *priv,
 524                           struct station_info *sinfo)
 525 {
 526         struct mwifiex_ds_get_signal signal;
 527         struct mwifiex_rate_cfg rate;
 528         int ret = 0;
 529
 530         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 531                 STATION_INFO_RX_PACKETS |
 532                 STATION_INFO_TX_PACKETS
 533                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 534
 535         /* Get signal information from the firmware */
 536         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 537         if (mwifiex_get_signal_info(priv, &signal)) {
 538                 dev_err(priv->adapter->dev, "getting signal information\n");
 539                 ret = -EFAULT;
 540         }
 541
 542         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 543                 dev_err(priv->adapter->dev, "getting data rate\n");
 544                 ret = -EFAULT;
 545         }
 546
 547         /*
 548          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 549          * MCS index values for us are 0 to 7.
 550          */
 551         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
 552                 sinfo->txrate.mcs = priv->tx_rate;
 553                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 554                 /* 40MHz rate */
 555                 if (priv->tx_htinfo & BIT(1))
 556                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 557                 /* SGI enabled */
 558                 if (priv->tx_htinfo & BIT(2))
 559                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 560         }
 561
 562         sinfo->rx_bytes = priv->stats.rx_bytes;
 563         sinfo->tx_bytes = priv->stats.tx_bytes;
 564         sinfo->rx_packets = priv->stats.rx_packets;
 565         sinfo->tx_packets = priv->stats.tx_packets;
 566         sinfo->signal = priv->qual_level;
 567         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 568         sinfo->txrate.legacy = rate.rate * 5;
 569
 570         return ret;
 571 }
 572
 573 /*
 574  * CFG802.11 operation handler to get station information.
 575  *
 576  * This function only works in connected mode, and dumps the
 577  * requested station information, if available.
 578  */
 579 static int
 580 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 581                              u8 *mac, struct station_info *sinfo)
 582 {
 583         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 584
 585         if (!priv->media_connected)
 586                 return -ENOENT;
 587         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 588                 return -ENOENT;
 589
 590         return mwifiex_dump_station_info(priv, sinfo);
 591 }
 592
 593 /* Supported rates to be advertised to the cfg80211 */
 594
 595 static struct ieee80211_rate mwifiex_rates[] = {
 596         {.bitrate = 10, .hw_value = 2, },
 597         {.bitrate = 20, .hw_value = 4, },
 598         {.bitrate = 55, .hw_value = 11, },
 599         {.bitrate = 110, .hw_value = 22, },
 600         {.bitrate = 220, .hw_value = 44, },
 601         {.bitrate = 60, .hw_value = 12, },
 602         {.bitrate = 90, .hw_value = 18, },
 603         {.bitrate = 120, .hw_value = 24, },
 604         {.bitrate = 180, .hw_value = 36, },
 605         {.bitrate = 240, .hw_value = 48, },
 606         {.bitrate = 360, .hw_value = 72, },
 607         {.bitrate = 480, .hw_value = 96, },
 608         {.bitrate = 540, .hw_value = 108, },
 609         {.bitrate = 720, .hw_value = 144, },
 610 };
 611
 612 /* Channel definitions to be advertised to cfg80211 */
 613
 614 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 615         {.center_freq = 2412, .hw_value = 1, },
 616         {.center_freq = 2417, .hw_value = 2, },
 617         {.center_freq = 2422, .hw_value = 3, },
 618         {.center_freq = 2427, .hw_value = 4, },
 619         {.center_freq = 2432, .hw_value = 5, },
 620         {.center_freq = 2437, .hw_value = 6, },
 621         {.center_freq = 2442, .hw_value = 7, },
 622         {.center_freq = 2447, .hw_value = 8, },
 623         {.center_freq = 2452, .hw_value = 9, },
 624         {.center_freq = 2457, .hw_value = 10, },
 625         {.center_freq = 2462, .hw_value = 11, },
 626         {.center_freq = 2467, .hw_value = 12, },
 627         {.center_freq = 2472, .hw_value = 13, },
 628         {.center_freq = 2484, .hw_value = 14, },
 629 };
 630
 631 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 632         .channels = mwifiex_channels_2ghz,
 633         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 634         .bitrates = mwifiex_rates,
 635         .n_bitrates = 14,
 636 };
 637
 638 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 639         {.center_freq = 5040, .hw_value = 8, },
 640         {.center_freq = 5060, .hw_value = 12, },
 641         {.center_freq = 5080, .hw_value = 16, },
 642         {.center_freq = 5170, .hw_value = 34, },
 643         {.center_freq = 5190, .hw_value = 38, },
 644         {.center_freq = 5210, .hw_value = 42, },
 645         {.center_freq = 5230, .hw_value = 46, },
 646         {.center_freq = 5180, .hw_value = 36, },
 647         {.center_freq = 5200, .hw_value = 40, },
 648         {.center_freq = 5220, .hw_value = 44, },
 649         {.center_freq = 5240, .hw_value = 48, },
 650         {.center_freq = 5260, .hw_value = 52, },
 651         {.center_freq = 5280, .hw_value = 56, },
 652         {.center_freq = 5300, .hw_value = 60, },
 653         {.center_freq = 5320, .hw_value = 64, },
 654         {.center_freq = 5500, .hw_value = 100, },
 655         {.center_freq = 5520, .hw_value = 104, },
 656         {.center_freq = 5540, .hw_value = 108, },
 657         {.center_freq = 5560, .hw_value = 112, },
 658         {.center_freq = 5580, .hw_value = 116, },
 659         {.center_freq = 5600, .hw_value = 120, },
 660         {.center_freq = 5620, .hw_value = 124, },
 661         {.center_freq = 5640, .hw_value = 128, },
 662         {.center_freq = 5660, .hw_value = 132, },
 663         {.center_freq = 5680, .hw_value = 136, },
 664         {.center_freq = 5700, .hw_value = 140, },
 665         {.center_freq = 5745, .hw_value = 149, },
 666         {.center_freq = 5765, .hw_value = 153, },
 667         {.center_freq = 5785, .hw_value = 157, },
 668         {.center_freq = 5805, .hw_value = 161, },
 669         {.center_freq = 5825, .hw_value = 165, },
 670 };
 671
 672 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 673         .channels = mwifiex_channels_5ghz,
 674         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 675         .bitrates = mwifiex_rates - 4,
 676         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 677 };
 678
 679
 680 /* Supported crypto cipher suits to be advertised to cfg80211 */
 681
 682 static const u32 mwifiex_cipher_suites[] = {
 683         WLAN_CIPHER_SUITE_WEP40,
 684         WLAN_CIPHER_SUITE_WEP104,
 685         WLAN_CIPHER_SUITE_TKIP,
 686         WLAN_CIPHER_SUITE_CCMP,
 687 };
 688
 689 /*
 690  * CFG802.11 operation handler for setting bit rates.
 691  *
 692  * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 693  * Currently only 2.4GHz band is supported.
 694  */
 695 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 696                                 struct net_device *dev,
 697                                 const u8 *peer,
 698                                 const struct cfg80211_bitrate_mask *mask)
 699 {
 700         struct mwifiex_ds_band_cfg band_cfg;
 701         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 702         int index = 0, mode = 0, i;
 703
 704         /* Currently only 2.4GHz is supported */
 705         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
 706                 /*
 707                  * Rates below 6 Mbps in the table are CCK rates; 802.11b
 708                  * and from 6 they are OFDM; 802.11G
 709                  */
 710                 if (mwifiex_rates[i].bitrate == 60) {
 711                         index = 1 << i;
 712                         break;
 713                 }
 714         }
 715
 716         if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
 717                 mode = BAND_B;
 718         } else {
 719                 mode = BAND_G;
 720                 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
 721                         mode |=  BAND_B;
 722         }
 723
 724         memset(&band_cfg, 0, sizeof(band_cfg));
 725         band_cfg.config_bands = mode;
 726
 727         if (priv->bss_mode == NL80211_IFTYPE_ADHOC)
 728                 band_cfg.adhoc_start_band = mode;
 729
 730         band_cfg.sec_chan_offset = NO_SEC_CHANNEL;
 731
 732         if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
 733                 return -EFAULT;
 734
 735         wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
 736                                 (mode & BAND_B) ? "b" : "",
 737                                 (mode & BAND_G) ? "g" : "");
 738
 739         return 0;
 740 }
 741
 742 /*
 743  * CFG802.11 operation handler for disconnection request.
 744  *
 745  * This function does not work when there is already a disconnection
 746  * procedure going on.
 747  */
 748 static int
 749 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 750                             u16 reason_code)
 751 {
 752         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 753
 754         if (priv->disconnect)
 755                 return -EBUSY;
 756
 757         priv->disconnect = 1;
 758         if (mwifiex_deauthenticate(priv, NULL))
 759                 return -EFAULT;
 760
 761         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 762                 " reason code %d\n", priv->cfg_bssid, reason_code);
 763
 764         queue_work(priv->workqueue, &priv->cfg_workqueue);
 765
 766         return 0;
 767 }
 768
 769 /*
 770  * This function informs the CFG802.11 subsystem of a new IBSS.
 771  *
 772  * The following information are sent to the CFG802.11 subsystem
 773  * to register the new IBSS. If we do not register the new IBSS,
 774  * a kernel panic will result.
 775  *      - SSID
 776  *      - SSID length
 777  *      - BSSID
 778  *      - Channel
 779  */
 780 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 781 {
 782         struct ieee80211_channel *chan;
 783         struct mwifiex_bss_info bss_info;
 784         struct cfg80211_bss *bss;
 785         int ie_len;
 786         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 787         enum ieee80211_band band;
 788
 789         if (mwifiex_get_bss_info(priv, &bss_info))
 790                 return -1;
 791
 792         ie_buf[0] = WLAN_EID_SSID;
 793         ie_buf[1] = bss_info.ssid.ssid_len;
 794
 795         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 796                         &bss_info.ssid.ssid,
 797                         bss_info.ssid.ssid_len);
 798         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 799
 800         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 801         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 802                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 803                                                        band));
 804
 805         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
 806                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 807                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 808         cfg80211_put_bss(bss);
 809         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 810
 811         return 0;
 812 }
 813
 814 /*
 815  * This function connects with a BSS.
 816  *
 817  * This function handles both Infra and Ad-Hoc modes. It also performs
 818  * validity checking on the provided parameters, disconnects from the
 819  * current BSS (if any), sets up the association/scan parameters,
 820  * including security settings, and performs specific SSID scan before
 821  * trying to connect.
 822  *
 823  * For Infra mode, the function returns failure if the specified SSID
 824  * is not found in scan table. However, for Ad-Hoc mode, it can create
 825  * the IBSS if it does not exist. On successful completion in either case,
 826  * the function notifies the CFG802.11 subsystem of the new BSS connection.
 827  */
 828 static int
 829 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 830                        u8 *bssid, int mode, struct ieee80211_channel *channel,
 831                        struct cfg80211_connect_params *sme, bool privacy)
 832 {
 833         struct mwifiex_802_11_ssid req_ssid;
 834         int ret, auth_type = 0;
 835         struct cfg80211_bss *bss = NULL;
 836         u8 is_scanning_required = 0;
 837
 838         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
 839
 840         req_ssid.ssid_len = ssid_len;
 841         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
 842                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 843                 return -EINVAL;
 844         }
 845
 846         memcpy(req_ssid.ssid, ssid, ssid_len);
 847         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
 848                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
 849                 return -EINVAL;
 850         }
 851
 852         /* disconnect before try to associate */
 853         mwifiex_deauthenticate(priv, NULL);
 854
 855         if (channel)
 856                 ret = mwifiex_set_rf_channel(priv, channel,
 857                                 mwifiex_channels_to_cfg80211_channel_type
 858                                 (priv->adapter->chan_offset));
 859
 860         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
 861
 862         if (mode == NL80211_IFTYPE_ADHOC) {
 863                 /* "privacy" is set only for ad-hoc mode */
 864                 if (privacy) {
 865                         /*
 866                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
 867                          * the firmware can find a matching network from the
 868                          * scan. The cfg80211 does not give us the encryption
 869                          * mode at this stage so just setting it to WEP here.
 870                          */
 871                         priv->sec_info.encryption_mode =
 872                                         WLAN_CIPHER_SUITE_WEP104;
 873                         priv->sec_info.authentication_mode =
 874                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
 875                 }
 876
 877                 goto done;
 878         }
 879
 880         /* Now handle infra mode. "sme" is valid for infra mode only */
 881         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
 882                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
 883                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 884         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 885                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 886
 887         if (sme->crypto.n_ciphers_pairwise) {
 888                 priv->sec_info.encryption_mode =
 889                                                 sme->crypto.ciphers_pairwise[0];
 890                 priv->sec_info.authentication_mode = auth_type;
 891         }
 892
 893         if (sme->crypto.cipher_group) {
 894                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
 895                 priv->sec_info.authentication_mode = auth_type;
 896         }
 897         if (sme->ie)
 898                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
 899
 900         if (sme->key) {
 901                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
 902                         dev_dbg(priv->adapter->dev,
 903                                 "info: setting wep encryption"
 904                                 " with key len %d\n", sme->key_len);
 905                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 906                                                         sme->key_idx, 0);
 907                 }
 908         }
 909 done:
 910         /* Do specific SSID scanning */
 911         if (mwifiex_request_scan(priv, &req_ssid)) {
 912                 dev_err(priv->adapter->dev, "scan error\n");
 913                 return -EFAULT;
 914         }
 915
 916         /*
 917          * Scan entries are valid for some time (15 sec). So we can save one
 918          * active scan time if we just try cfg80211_get_bss first. If it fails
 919          * then request scan and cfg80211_get_bss() again for final output.
 920          */
 921         while (1) {
 922                 if (is_scanning_required) {
 923                         /* Do specific SSID scanning */
 924                         if (mwifiex_request_scan(priv, &req_ssid)) {
 925                                 dev_err(priv->adapter->dev, "scan error\n");
 926                                 return -EFAULT;
 927                         }
 928                 }
 929
 930                 /* Find the BSS we want using available scan results */
 931                 if (mode == NL80211_IFTYPE_ADHOC)
 932                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 933                                                bssid, ssid, ssid_len,
 934                                                WLAN_CAPABILITY_IBSS,
 935                                                WLAN_CAPABILITY_IBSS);
 936                 else
 937                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
 938                                                bssid, ssid, ssid_len,
 939                                                WLAN_CAPABILITY_ESS,
 940                                                WLAN_CAPABILITY_ESS);
 941
 942                 if (!bss) {
 943                         if (is_scanning_required) {
 944                                 dev_warn(priv->adapter->dev, "assoc: requested "
 945                                          "bss not found in scan results\n");
 946                                 break;
 947                         }
 948                         is_scanning_required = 1;
 949                 } else {
 950                         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
 951                                         (char *) req_ssid.ssid, bss->bssid);
 952                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
 953                         break;
 954                 }
 955         }
 956
 957         if (mwifiex_bss_start(priv, bss, &req_ssid))
 958                 return -EFAULT;
 959
 960         if (mode == NL80211_IFTYPE_ADHOC) {
 961                 /* Inform the BSS information to kernel, otherwise
 962                  * kernel will give a panic after successful assoc */
 963                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
 964                         return -EFAULT;
 965         }
 966
 967         return ret;
 968 }
 969
 970 /*
 971  * CFG802.11 operation handler for association request.
 972  *
 973  * This function does not work when the current mode is set to Ad-Hoc, or
 974  * when there is already an association procedure going on. The given BSS
 975  * information is used to associate.
 976  */
 977 static int
 978 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 979                          struct cfg80211_connect_params *sme)
 980 {
 981         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 982         int ret = 0;
 983
 984         if (priv->assoc_request)
 985                 return -EBUSY;
 986
 987         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 988                 wiphy_err(wiphy, "received infra assoc request "
 989                                 "when station is in ibss mode\n");
 990                 goto done;
 991         }
 992
 993         priv->assoc_request = -EINPROGRESS;
 994
 995         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
 996                (char *) sme->ssid, sme->bssid);
 997
 998         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
 999                                      priv->bss_mode, sme->channel, sme, 0);
1000
1001         priv->assoc_request = 1;
1002 done:
1003         priv->assoc_result = ret;
1004         queue_work(priv->workqueue, &priv->cfg_workqueue);
1005         return ret;
1006 }
1007
1008 /*
1009  * CFG802.11 operation handler to join an IBSS.
1010  *
1011  * This function does not work in any mode other than Ad-Hoc, or if
1012  * a join operation is already in progress.
1013  */
1014 static int
1015 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1016                            struct cfg80211_ibss_params *params)
1017 {
1018         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1019         int ret = 0;
1020
1021         if (priv->ibss_join_request)
1022                 return -EBUSY;
1023
1024         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1025                 wiphy_err(wiphy, "request to join ibss received "
1026                                 "when station is not in ibss mode\n");
1027                 goto done;
1028         }
1029
1030         priv->ibss_join_request = -EINPROGRESS;
1031
1032         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1033                (char *) params->ssid, params->bssid);
1034
1035         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1036                                 params->bssid, priv->bss_mode,
1037                                 params->channel, NULL, params->privacy);
1038
1039         priv->ibss_join_request = 1;
1040 done:
1041         priv->ibss_join_result = ret;
1042         queue_work(priv->workqueue, &priv->cfg_workqueue);
1043         return ret;
1044 }
1045
1046 /*
1047  * CFG802.11 operation handler to leave an IBSS.
1048  *
1049  * This function does not work if a leave operation is
1050  * already in progress.
1051  */
1052 static int
1053 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1054 {
1055         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1056
1057         if (priv->disconnect)
1058                 return -EBUSY;
1059
1060         priv->disconnect = 1;
1061
1062         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1063                         priv->cfg_bssid);
1064         if (mwifiex_deauthenticate(priv, NULL))
1065                 return -EFAULT;
1066
1067         queue_work(priv->workqueue, &priv->cfg_workqueue);
1068
1069         return 0;
1070 }
1071
1072 /*
1073  * CFG802.11 operation handler for scan request.
1074  *
1075  * This function issues a scan request to the firmware based upon
1076  * the user specified scan configuration. On successfull completion,
1077  * it also informs the results.
1078  */
1079 static int
1080 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1081                       struct cfg80211_scan_request *request)
1082 {
1083         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1084
1085         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1086
1087         if (priv->scan_request && priv->scan_request != request)
1088                 return -EBUSY;
1089
1090         priv->scan_request = request;
1091
1092         queue_work(priv->workqueue, &priv->cfg_workqueue);
1093         return 0;
1094 }
1095
1096 /*
1097  * This function sets up the CFG802.11 specific HT capability fields
1098  * with default values.
1099  *
1100  * The following default values are set -
1101  *      - HT Supported = True
1102  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1103  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1104  *      - HT Capabilities supported by firmware
1105  *      - MCS information, Rx mask = 0xff
1106  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1107  */
1108 static void
1109 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1110                       struct mwifiex_private *priv)
1111 {
1112         int rx_mcs_supp;
1113         struct ieee80211_mcs_info mcs_set;
1114         u8 *mcs = (u8 *)&mcs_set;
1115         struct mwifiex_adapter *adapter = priv->adapter;
1116
1117         ht_info->ht_supported = true;
1118         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1119         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1120
1121         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1122
1123         /* Fill HT capability information */
1124         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1125                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1126         else
1127                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1128
1129         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1130                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1131         else
1132                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1133
1134         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1135                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1136         else
1137                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1138
1139         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1140                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1141         else
1142                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1143
1144         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1145                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1146         else
1147                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1148
1149         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1150         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1151
1152         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1153         /* Set MCS for 1x1 */
1154         memset(mcs, 0xff, rx_mcs_supp);
1155         /* Clear all the other values */
1156         memset(&mcs[rx_mcs_supp], 0,
1157                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1158         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1159                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1160                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1161                 SETHT_MCS32(mcs_set.rx_mask);
1162
1163         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1164
1165         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1166 }
1167
1168 /*
1169  *  create a new virtual interface with the given name
1170  */
1171 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1172                                                 char *name,
1173                                                 enum nl80211_iftype type,
1174                                                 u32 *flags,
1175                                                 struct vif_params *params)
1176 {
1177         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1178         struct mwifiex_adapter *adapter;
1179         struct net_device *dev;
1180         void *mdev_priv;
1181
1182         if (!priv)
1183                 return NULL;
1184
1185         adapter = priv->adapter;
1186         if (!adapter)
1187                 return NULL;
1188
1189         switch (type) {
1190         case NL80211_IFTYPE_UNSPECIFIED:
1191         case NL80211_IFTYPE_STATION:
1192         case NL80211_IFTYPE_ADHOC:
1193                 if (priv->bss_mode) {
1194                         wiphy_err(wiphy, "cannot create multiple"
1195                                         " station/adhoc interfaces\n");
1196                         return NULL;
1197                 }
1198
1199                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1200                         priv->bss_mode = NL80211_IFTYPE_STATION;
1201                 else
1202                         priv->bss_mode = type;
1203
1204                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1205                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1206                 priv->bss_priority = 0;
1207                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1208                 priv->bss_index = 0;
1209                 priv->bss_num = 0;
1210
1211                 break;
1212         default:
1213                 wiphy_err(wiphy, "type not supported\n");
1214                 return NULL;
1215         }
1216
1217         dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1218                               ether_setup, 1);
1219         if (!dev) {
1220                 wiphy_err(wiphy, "no memory available for netdevice\n");
1221                 goto error;
1222         }
1223
1224         dev_net_set(dev, wiphy_net(wiphy));
1225         dev->ieee80211_ptr = priv->wdev;
1226         dev->ieee80211_ptr->iftype = priv->bss_mode;
1227         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1228         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1229         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1230
1231         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1232         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1233         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1234
1235         mdev_priv = netdev_priv(dev);
1236         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1237
1238         priv->netdev = dev;
1239         mwifiex_init_priv_params(priv, dev);
1240
1241         SET_NETDEV_DEV(dev, adapter->dev);
1242
1243         /* Register network device */
1244         if (register_netdevice(dev)) {
1245                 wiphy_err(wiphy, "cannot register virtual network device\n");
1246                 goto error;
1247         }
1248
1249         sema_init(&priv->async_sem, 1);
1250         priv->scan_pending_on_block = false;
1251
1252         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1253
1254 #ifdef CONFIG_DEBUG_FS
1255         mwifiex_dev_debugfs_init(priv);
1256 #endif
1257         return dev;
1258 error:
1259         if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1260                 free_netdev(dev);
1261         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1262
1263         return NULL;
1264 }
1265 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1266
1267 /*
1268  * del_virtual_intf: remove the virtual interface determined by dev
1269  */
1270 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1271 {
1272         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1273
1274         if (!priv || !dev)
1275                 return 0;
1276
1277 #ifdef CONFIG_DEBUG_FS
1278         mwifiex_dev_debugfs_remove(priv);
1279 #endif
1280
1281         if (!netif_queue_stopped(priv->netdev))
1282                 netif_stop_queue(priv->netdev);
1283
1284         if (netif_carrier_ok(priv->netdev))
1285                 netif_carrier_off(priv->netdev);
1286
1287         if (dev->reg_state == NETREG_REGISTERED)
1288                 unregister_netdevice(dev);
1289
1290         if (dev->reg_state == NETREG_UNREGISTERED)
1291                 free_netdev(dev);
1292
1293         /* Clear the priv in adapter */
1294         priv->netdev = NULL;
1295
1296         priv->media_connected = false;
1297
1298         cancel_work_sync(&priv->cfg_workqueue);
1299         flush_workqueue(priv->workqueue);
1300         destroy_workqueue(priv->workqueue);
1301
1302         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1303
1304         return 0;
1305 }
1306 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1307
1308 /* station cfg80211 operations */
1309 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1310         .add_virtual_intf = mwifiex_add_virtual_intf,
1311         .del_virtual_intf = mwifiex_del_virtual_intf,
1312         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1313         .scan = mwifiex_cfg80211_scan,
1314         .connect = mwifiex_cfg80211_connect,
1315         .disconnect = mwifiex_cfg80211_disconnect,
1316         .get_station = mwifiex_cfg80211_get_station,
1317         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1318         .set_channel = mwifiex_cfg80211_set_channel,
1319         .join_ibss = mwifiex_cfg80211_join_ibss,
1320         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1321         .add_key = mwifiex_cfg80211_add_key,
1322         .del_key = mwifiex_cfg80211_del_key,
1323         .set_default_key = mwifiex_cfg80211_set_default_key,
1324         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1325         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1326         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1327 };
1328
1329 /*
1330  * This function registers the device with CFG802.11 subsystem.
1331  *
1332  * The function creates the wireless device/wiphy, populates it with
1333  * default parameters and handler function pointers, and finally
1334  * registers the device.
1335  */
1336 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1337 {
1338         int ret;
1339         void *wdev_priv;
1340         struct wireless_dev *wdev;
1341
1342         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1343         if (!wdev) {
1344                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1345                                                 __func__);
1346                 return -ENOMEM;
1347         }
1348         wdev->wiphy =
1349                 wiphy_new(&mwifiex_cfg80211_ops,
1350                           sizeof(struct mwifiex_private *));
1351         if (!wdev->wiphy) {
1352                 kfree(wdev);
1353                 return -ENOMEM;
1354         }
1355         wdev->iftype = NL80211_IFTYPE_STATION;
1356         wdev->wiphy->max_scan_ssids = 10;
1357         wdev->wiphy->interface_modes =
1358                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1359
1360         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1361         mwifiex_setup_ht_caps(
1362                 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1363
1364         if (priv->adapter->config_bands & BAND_A) {
1365                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1366                 mwifiex_setup_ht_caps(
1367                         &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1368         } else {
1369                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1370         }
1371
1372         /* Initialize cipher suits */
1373         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1374         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1375
1376         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1377         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1378
1379         /* We are using custom domains */
1380         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1381
1382         /* Reserve space for bss band information */
1383         wdev->wiphy->bss_priv_size = sizeof(u8);
1384
1385         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1386
1387         /* Set struct mwifiex_private pointer in wiphy_priv */
1388         wdev_priv = wiphy_priv(wdev->wiphy);
1389
1390         *(unsigned long *) wdev_priv = (unsigned long) priv;
1391
1392         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1393
1394         ret = wiphy_register(wdev->wiphy);
1395         if (ret < 0) {
1396                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1397                                                 __func__);
1398                 wiphy_free(wdev->wiphy);
1399                 kfree(wdev);
1400                 return ret;
1401         } else {
1402                 dev_dbg(priv->adapter->dev,
1403                                 "info: successfully registered wiphy device\n");
1404         }
1405
1406         priv->wdev = wdev;
1407
1408         return ret;
1409 }
1410
1411 /*
1412  * This function handles the result of different pending network operations.
1413  *
1414  * The following operations are handled and CFG802.11 subsystem is
1415  * notified accordingly -
1416  *      - Scan request completion
1417  *      - Association request completion
1418  *      - IBSS join request completion
1419  *      - Disconnect request completion
1420  */
1421 void
1422 mwifiex_cfg80211_results(struct work_struct *work)
1423 {
1424         struct mwifiex_private *priv =
1425                 container_of(work, struct mwifiex_private, cfg_workqueue);
1426         struct mwifiex_user_scan_cfg *scan_req;
1427         int ret = 0, i;
1428         struct ieee80211_channel *chan;
1429
1430         if (priv->scan_request) {
1431                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1432                                    GFP_KERNEL);
1433                 if (!scan_req) {
1434                         dev_err(priv->adapter->dev, "failed to alloc "
1435                                                     "scan_req\n");
1436                         return;
1437                 }
1438                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1439                         memcpy(scan_req->ssid_list[i].ssid,
1440                                         priv->scan_request->ssids[i].ssid,
1441                                         priv->scan_request->ssids[i].ssid_len);
1442                         scan_req->ssid_list[i].max_len =
1443                                         priv->scan_request->ssids[i].ssid_len;
1444                 }
1445                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1446                         chan = priv->scan_request->channels[i];
1447                         scan_req->chan_list[i].chan_number = chan->hw_value;
1448                         scan_req->chan_list[i].radio_type = chan->band;
1449                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1450                                 scan_req->chan_list[i].scan_type =
1451                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1452                         else
1453                                 scan_req->chan_list[i].scan_type =
1454                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1455                         scan_req->chan_list[i].scan_time = 0;
1456                 }
1457                 if (mwifiex_set_user_scan_ioctl(priv, scan_req))
1458                         ret = -EFAULT;
1459                 priv->scan_result_status = ret;
1460                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1461                                                         __func__);
1462                 cfg80211_scan_done(priv->scan_request,
1463                                 (priv->scan_result_status < 0));
1464                 priv->scan_request = NULL;
1465                 kfree(scan_req);
1466         }
1467
1468         if (priv->assoc_request == 1) {
1469                 if (!priv->assoc_result) {
1470                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1471                                                 NULL, 0, NULL, 0,
1472                                                 WLAN_STATUS_SUCCESS,
1473                                                 GFP_KERNEL);
1474                         dev_dbg(priv->adapter->dev,
1475                                 "info: associated to bssid %pM successfully\n",
1476                                priv->cfg_bssid);
1477                 } else {
1478                         dev_dbg(priv->adapter->dev,
1479                                 "info: association to bssid %pM failed\n",
1480                                priv->cfg_bssid);
1481                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1482                 }
1483                 priv->assoc_request = 0;
1484                 priv->assoc_result = 0;
1485         }
1486
1487         if (priv->ibss_join_request == 1) {
1488                 if (!priv->ibss_join_result) {
1489                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1490                                              GFP_KERNEL);
1491                         dev_dbg(priv->adapter->dev,
1492                                 "info: joined/created adhoc network with bssid"
1493                                         " %pM successfully\n", priv->cfg_bssid);
1494                 } else {
1495                         dev_dbg(priv->adapter->dev,
1496                                 "info: failed creating/joining adhoc network\n");
1497                 }
1498                 priv->ibss_join_request = 0;
1499                 priv->ibss_join_result = 0;
1500         }
1501
1502         if (priv->disconnect) {
1503                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1504                 priv->disconnect = 0;
1505         }
1506 }