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         int channel;
  38         switch (channel_type) {
  39         case NL80211_CHAN_NO_HT:
  40         case NL80211_CHAN_HT20:
  41                 channel = NO_SEC_CHANNEL;
  42                 break;
  43         case NL80211_CHAN_HT40PLUS:
  44                 channel = SEC_CHANNEL_ABOVE;
  45                 break;
  46         case NL80211_CHAN_HT40MINUS:
  47                 channel = SEC_CHANNEL_BELOW;
  48                 break;
  49         default:
  50                 channel = NO_SEC_CHANNEL;
  51         }
  52         return channel;
  53 }
  54
  55 /*
  56  * This function maps the driver channel type into nl802.11 channel type.
  57  *
  58  * The mapping is as follows -
  59  *      NO_SEC_CHANNEL      -> NL80211_CHAN_HT20
  60  *      SEC_CHANNEL_ABOVE   -> NL80211_CHAN_HT40PLUS
  61  *      SEC_CHANNEL_BELOW   -> NL80211_CHAN_HT40MINUS
  62  *      Others              -> NL80211_CHAN_HT20
  63  */
  64 static enum nl80211_channel_type
  65 mwifiex_channels_to_cfg80211_channel_type(int channel_type)
  66 {
  67         int channel;
  68         switch (channel_type) {
  69         case NO_SEC_CHANNEL:
  70                 channel = NL80211_CHAN_HT20;
  71                 break;
  72         case SEC_CHANNEL_ABOVE:
  73                 channel = NL80211_CHAN_HT40PLUS;
  74                 break;
  75         case SEC_CHANNEL_BELOW:
  76                 channel = NL80211_CHAN_HT40MINUS;
  77                 break;
  78         default:
  79                 channel = NL80211_CHAN_HT20;
  80         }
  81         return channel;
  82 }
  83
  84 /*
  85  * This function checks whether WEP is set.
  86  */
  87 static int
  88 mwifiex_is_alg_wep(u32 cipher)
  89 {
  90         int alg = 0;
  91
  92         switch (cipher) {
  93         case MWIFIEX_ENCRYPTION_MODE_WEP40:
  94         case MWIFIEX_ENCRYPTION_MODE_WEP104:
  95                 alg = 1;
  96                 break;
  97         default:
  98                 alg = 0;
  99                 break;
 100         }
 101         return alg;
 102 }
 103
 104 /*
 105  * This function maps the given cipher type into driver specific type.
 106  *
 107  * It also sets a flag to indicate whether WPA is enabled or not.
 108  *
 109  * The mapping table is -
 110  *      Input cipher                Driver cipher type              WPA enabled?
 111  *      ------------                ------------------              ------------
 112  *      IW_AUTH_CIPHER_NONE         MWIFIEX_ENCRYPTION_MODE_NONE    No
 113  *      WLAN_CIPHER_SUITE_WEP40     MWIFIEX_ENCRYPTION_MODE_WEP40   No
 114  *      WLAN_CIPHER_SUITE_WEP104    MWIFIEX_ENCRYPTION_MODE_WEP104  No
 115  *      WLAN_CIPHER_SUITE_TKIP      MWIFIEX_ENCRYPTION_MODE_TKIP    Yes
 116  *      WLAN_CIPHER_SUITE_CCMP      MWIFIEX_ENCRYPTION_MODE_CCMP    Yes
 117  *      Others                      -1                              No
 118  */
 119 static int
 120 mwifiex_get_mwifiex_cipher(u32 cipher, int *wpa_enabled)
 121 {
 122         int encrypt_mode;
 123
 124         if (wpa_enabled)
 125                 *wpa_enabled = 0;
 126         switch (cipher) {
 127         case IW_AUTH_CIPHER_NONE:
 128                 encrypt_mode = MWIFIEX_ENCRYPTION_MODE_NONE;
 129                 break;
 130         case WLAN_CIPHER_SUITE_WEP40:
 131                 encrypt_mode = MWIFIEX_ENCRYPTION_MODE_WEP40;
 132                 break;
 133         case WLAN_CIPHER_SUITE_WEP104:
 134                 encrypt_mode = MWIFIEX_ENCRYPTION_MODE_WEP104;
 135                 break;
 136         case WLAN_CIPHER_SUITE_TKIP:
 137                 encrypt_mode = MWIFIEX_ENCRYPTION_MODE_TKIP;
 138                 if (wpa_enabled)
 139                         *wpa_enabled = 1;
 140                 break;
 141         case WLAN_CIPHER_SUITE_CCMP:
 142                 encrypt_mode = MWIFIEX_ENCRYPTION_MODE_CCMP;
 143                 if (wpa_enabled)
 144                         *wpa_enabled = 1;
 145                 break;
 146         default:
 147                 encrypt_mode = -1;
 148         }
 149
 150         return encrypt_mode;
 151 }
 152
 153 /*
 154  * This function retrieves the private structure from kernel wiphy structure.
 155  */
 156 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
 157 {
 158         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 159 }
 160
 161 /*
 162  * CFG802.11 operation handler to delete a network key.
 163  */
 164 static int
 165 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 166                          u8 key_index, bool pairwise, const u8 *mac_addr)
 167 {
 168         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 169         int ret = 0;
 170
 171         ret = mwifiex_set_encode(priv, NULL, 0, key_index, 1);
 172         if (ret) {
 173                 wiphy_err(wiphy, "deleting the crypto keys\n");
 174                 return -EFAULT;
 175         }
 176
 177         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 178         return 0;
 179 }
 180
 181 /*
 182  * CFG802.11 operation handler to set Tx power.
 183  */
 184 static int
 185 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 186                               enum nl80211_tx_power_setting type,
 187                               int dbm)
 188 {
 189         int ret = 0;
 190         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 191
 192         ret = mwifiex_set_tx_power(priv, type, dbm);
 193
 194         return ret;
 195 }
 196
 197 /*
 198  * CFG802.11 operation handler to set Power Save option.
 199  *
 200  * The timeout value, if provided, is currently ignored.
 201  */
 202 static int
 203 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 204                                 struct net_device *dev,
 205                                 bool enabled, int timeout)
 206 {
 207         int ret = 0;
 208         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 209
 210         if (timeout)
 211                 wiphy_dbg(wiphy,
 212                         "info: ignoring the timeout value"
 213                         " for IEEE power save\n");
 214
 215         ret = mwifiex_drv_set_power(priv, enabled);
 216
 217         return ret;
 218 }
 219
 220 /*
 221  * CFG802.11 operation handler to set the default network key.
 222  */
 223 static int
 224 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 225                                  u8 key_index, bool unicast,
 226                                  bool multicast)
 227 {
 228         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 229         int ret;
 230
 231         /* Return if WEP key not configured */
 232         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
 233                 return 0;
 234
 235         ret = mwifiex_set_encode(priv, NULL, 0, key_index, 0);
 236
 237         wiphy_dbg(wiphy, "info: set default Tx key index\n");
 238
 239         if (ret)
 240                 return -EFAULT;
 241
 242         return 0;
 243 }
 244
 245 /*
 246  * CFG802.11 operation handler to add a network key.
 247  */
 248 static int
 249 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 250                          u8 key_index, bool pairwise, const u8 *mac_addr,
 251                          struct key_params *params)
 252 {
 253         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 254         int ret = 0;
 255         int encrypt_mode;
 256
 257         encrypt_mode = mwifiex_get_mwifiex_cipher(params->cipher, NULL);
 258
 259         if (encrypt_mode != -1)
 260                 ret = mwifiex_set_encode(priv, params->key, params->key_len,
 261                                                 key_index, 0);
 262
 263         wiphy_dbg(wiphy, "info: crypto keys added\n");
 264
 265         if (ret)
 266                 return -EFAULT;
 267
 268         return 0;
 269 }
 270
 271 /*
 272  * This function sends domain information to the firmware.
 273  *
 274  * The following information are passed to the firmware -
 275  *      - Country codes
 276  *      - Sub bands (first channel, number of channels, maximum Tx power)
 277  */
 278 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 279 {
 280         u8 no_of_triplet = 0;
 281         struct ieee80211_country_ie_triplet *t;
 282         u8 no_of_parsed_chan = 0;
 283         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 284         u8 i, flag = 0;
 285         enum ieee80211_band band;
 286         struct ieee80211_supported_band *sband;
 287         struct ieee80211_channel *ch;
 288         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 289         struct mwifiex_adapter *adapter = priv->adapter;
 290         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 291         int ret = 0;
 292
 293         /* Set country code */
 294         domain_info->country_code[0] = priv->country_code[0];
 295         domain_info->country_code[1] = priv->country_code[1];
 296         domain_info->country_code[2] = ' ';
 297
 298         band = mwifiex_band_to_radio_type(adapter->config_bands);
 299         if (!wiphy->bands[band]) {
 300                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 301                 return -1;
 302         }
 303
 304         sband = wiphy->bands[band];
 305
 306         for (i = 0; i < sband->n_channels ; i++) {
 307                 ch = &sband->channels[i];
 308                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 309                         continue;
 310
 311                 if (!flag) {
 312                         flag = 1;
 313                         first_chan = (u32) ch->hw_value;
 314                         next_chan = first_chan;
 315                         max_pwr = ch->max_power;
 316                         no_of_parsed_chan = 1;
 317                         continue;
 318                 }
 319
 320                 if (ch->hw_value == next_chan + 1 &&
 321                                 ch->max_power == max_pwr) {
 322                         next_chan++;
 323                         no_of_parsed_chan++;
 324                 } else {
 325                         t = &domain_info->triplet[no_of_triplet];
 326                         t->chans.first_channel = first_chan;
 327                         t->chans.num_channels = no_of_parsed_chan;
 328                         t->chans.max_power = max_pwr;
 329                         no_of_triplet++;
 330                         first_chan = (u32) ch->hw_value;
 331                         next_chan = first_chan;
 332                         max_pwr = ch->max_power;
 333                         no_of_parsed_chan = 1;
 334                 }
 335         }
 336
 337         if (flag) {
 338                 t = &domain_info->triplet[no_of_triplet];
 339                 t->chans.first_channel = first_chan;
 340                 t->chans.num_channels = no_of_parsed_chan;
 341                 t->chans.max_power = max_pwr;
 342                 no_of_triplet++;
 343         }
 344
 345         domain_info->no_of_triplet = no_of_triplet;
 346         /* Send cmd to FW to set domain info */
 347         ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 348                                   HostCmd_ACT_GEN_SET, 0, NULL, NULL);
 349         if (ret)
 350                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 351
 352         return ret;
 353 }
 354
 355 /*
 356  * CFG802.11 regulatory domain callback function.
 357  *
 358  * This function is called when the regulatory domain is changed due to the
 359  * following reasons -
 360  *      - Set by driver
 361  *      - Set by system core
 362  *      - Set by user
 363  *      - Set bt Country IE
 364  */
 365 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 366                 struct regulatory_request *request)
 367 {
 368         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 369
 370         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 371                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 372
 373         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 374
 375         switch (request->initiator) {
 376         case NL80211_REGDOM_SET_BY_DRIVER:
 377         case NL80211_REGDOM_SET_BY_CORE:
 378         case NL80211_REGDOM_SET_BY_USER:
 379                 break;
 380                 /* Todo: apply driver specific changes in channel flags based
 381                    on the request initiator if necessary. */
 382         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 383                 break;
 384         }
 385         mwifiex_send_domain_info_cmd_fw(wiphy);
 386
 387         return 0;
 388 }
 389
 390 /*
 391  * This function sets the RF channel.
 392  *
 393  * This function creates multiple IOCTL requests, populates them accordingly
 394  * and issues them to set the band/channel and frequency.
 395  */
 396 static int
 397 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 398                        struct ieee80211_channel *chan,
 399                        enum nl80211_channel_type channel_type)
 400 {
 401         struct mwifiex_chan_freq_power cfp;
 402         int ret = 0;
 403         int status = 0;
 404         struct mwifiex_ds_band_cfg band_cfg;
 405         u32 config_bands = 0;
 406         struct wiphy *wiphy = priv->wdev->wiphy;
 407
 408         if (chan) {
 409                 memset(&band_cfg, 0, sizeof(band_cfg));
 410                 /* Set appropriate bands */
 411                 if (chan->band == IEEE80211_BAND_2GHZ)
 412                         config_bands = BAND_B | BAND_G | BAND_GN;
 413                 else
 414                         config_bands = BAND_AN | BAND_A;
 415                 if (priv->bss_mode == NL80211_IFTYPE_STATION
 416                     || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
 417                         band_cfg.config_bands = config_bands;
 418                 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 419                         band_cfg.config_bands = config_bands;
 420                         band_cfg.adhoc_start_band = config_bands;
 421                 }
 422                 /* Set channel offset */
 423                 band_cfg.sec_chan_offset =
 424                         mwifiex_cfg80211_channel_type_to_mwifiex_channels
 425                         (channel_type);
 426                 status = mwifiex_radio_ioctl_band_cfg(priv, HostCmd_ACT_GEN_SET,
 427                                                       &band_cfg);
 428
 429                 if (status)
 430                         return -EFAULT;
 431                 mwifiex_send_domain_info_cmd_fw(wiphy);
 432         }
 433
 434         wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
 435                 "mode %d\n", config_bands, band_cfg.sec_chan_offset,
 436                 priv->bss_mode);
 437         if (!chan)
 438                 return ret;
 439
 440         memset(&cfp, 0, sizeof(cfp));
 441         cfp.freq = chan->center_freq;
 442         /* Convert frequency to channel */
 443         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 444
 445         status = mwifiex_bss_ioctl_channel(priv, HostCmd_ACT_GEN_SET, &cfp);
 446         if (status)
 447                 return -EFAULT;
 448
 449         ret = mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 450
 451         return ret;
 452 }
 453
 454 /*
 455  * CFG802.11 operation handler to set channel.
 456  *
 457  * This function can only be used when station is not connected.
 458  */
 459 static int
 460 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 461                              struct ieee80211_channel *chan,
 462                              enum nl80211_channel_type channel_type)
 463 {
 464         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 465
 466         if (priv->media_connected) {
 467                 wiphy_err(wiphy, "This setting is valid only when station "
 468                                 "is not connected\n");
 469                 return -EINVAL;
 470         }
 471
 472         return mwifiex_set_rf_channel(priv, chan, channel_type);
 473 }
 474
 475 /*
 476  * This function sets the fragmentation threshold.
 477  *
 478  * This function creates an IOCTL request, populates it accordingly
 479  * and issues an IOCTL.
 480  *
 481  * The fragmentation threshold value must lies between MWIFIEX_FRAG_MIN_VALUE
 482  * and MWIFIEX_FRAG_MAX_VALUE.
 483  */
 484 static int
 485 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 486 {
 487         int ret = 0;
 488         int status = 0;
 489         struct mwifiex_wait_queue *wait = NULL;
 490         u8 wait_option = MWIFIEX_IOCTL_WAIT;
 491
 492         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 493             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 494                 return -EINVAL;
 495
 496         wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
 497         if (!wait)
 498                 return -ENOMEM;
 499
 500         status = mwifiex_snmp_mib_ioctl(priv, wait, FRAG_THRESH_I,
 501                                         HostCmd_ACT_GEN_SET, &frag_thr);
 502
 503         if (mwifiex_request_ioctl(priv, wait, status, wait_option))
 504                 ret = -EFAULT;
 505
 506         kfree(wait);
 507         return ret;
 508 }
 509
 510 /*
 511  * This function sets the RTS threshold.
 512  *
 513  * This function creates an IOCTL request, populates it accordingly
 514  * and issues an IOCTL.
 515  */
 516 static int
 517 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 518 {
 519         int ret = 0;
 520         struct mwifiex_wait_queue *wait = NULL;
 521         int status = 0;
 522         u8 wait_option = MWIFIEX_IOCTL_WAIT;
 523
 524         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 525                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 526
 527         wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
 528         if (!wait)
 529                 return -ENOMEM;
 530
 531         status = mwifiex_snmp_mib_ioctl(priv, wait, RTS_THRESH_I,
 532                                         HostCmd_ACT_GEN_SET, &rts_thr);
 533
 534         if (mwifiex_request_ioctl(priv, wait, status, wait_option))
 535                 ret = -EFAULT;
 536
 537         kfree(wait);
 538         return ret;
 539 }
 540
 541 /*
 542  * CFG802.11 operation handler to set wiphy parameters.
 543  *
 544  * This function can be used to set the RTS threshold and the
 545  * Fragmentation threshold of the driver.
 546  */
 547 static int
 548 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 549 {
 550         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 551
 552         int ret = 0;
 553
 554         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 555                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 556
 557         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 558                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 559
 560         return ret;
 561 }
 562
 563 /*
 564  * CFG802.11 operation handler to change interface type.
 565  */
 566 static int
 567 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 568                                      struct net_device *dev,
 569                                      enum nl80211_iftype type, u32 *flags,
 570                                      struct vif_params *params)
 571 {
 572         int ret = 0;
 573         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 574         struct mwifiex_wait_queue *wait = NULL;
 575
 576         if (priv->bss_mode == type) {
 577                 wiphy_warn(wiphy, "already set to required type\n");
 578                 return 0;
 579         }
 580
 581         priv->bss_mode = type;
 582
 583         switch (type) {
 584         case NL80211_IFTYPE_ADHOC:
 585                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 586                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 587                 break;
 588         case NL80211_IFTYPE_STATION:
 589                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 590                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 591                 break;
 592         case NL80211_IFTYPE_UNSPECIFIED:
 593                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 594                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 595                 return 0;
 596         default:
 597                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 598                 return -EINVAL;
 599         }
 600
 601         wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
 602         if (!wait)
 603                 return -ENOMEM;
 604
 605         mwifiex_deauthenticate(priv, wait, NULL);
 606
 607         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 608
 609         ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
 610                                   HostCmd_ACT_GEN_SET, 0, wait, NULL);
 611         if (!ret)
 612                 ret = -EINPROGRESS;
 613
 614         ret = mwifiex_request_ioctl(priv, wait, ret, MWIFIEX_IOCTL_WAIT);
 615         if (ret)
 616                 ret = -EFAULT;
 617
 618         kfree(wait);
 619         return ret;
 620 }
 621
 622 /*
 623  * This function dumps the station information on a buffer.
 624  *
 625  * The following information are shown -
 626  *      - Total bytes transmitted
 627  *      - Total bytes received
 628  *      - Total packets transmitted
 629  *      - Total packets received
 630  *      - Signal quality level
 631  *      - Transmission rate
 632  */
 633 static int
 634 mwifiex_dump_station_info(struct mwifiex_private *priv,
 635                           struct station_info *sinfo)
 636 {
 637         struct mwifiex_ds_get_signal signal;
 638         struct mwifiex_rate_cfg rate;
 639         int ret = 0;
 640
 641         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 642                 STATION_INFO_RX_PACKETS |
 643                 STATION_INFO_TX_PACKETS
 644                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 645
 646         /* Get signal information from the firmware */
 647         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 648         if (mwifiex_get_signal_info(priv, MWIFIEX_IOCTL_WAIT, &signal)) {
 649                 dev_err(priv->adapter->dev, "getting signal information\n");
 650                 ret = -EFAULT;
 651         }
 652
 653         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 654                 dev_err(priv->adapter->dev, "getting data rate\n");
 655                 ret = -EFAULT;
 656         }
 657
 658         sinfo->rx_bytes = priv->stats.rx_bytes;
 659         sinfo->tx_bytes = priv->stats.tx_bytes;
 660         sinfo->rx_packets = priv->stats.rx_packets;
 661         sinfo->tx_packets = priv->stats.tx_packets;
 662         sinfo->signal = priv->w_stats.qual.level;
 663         sinfo->txrate.legacy = rate.rate;
 664
 665         return ret;
 666 }
 667
 668 /*
 669  * CFG802.11 operation handler to get station information.
 670  *
 671  * This function only works in connected mode, and dumps the
 672  * requested station information, if available.
 673  */
 674 static int
 675 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 676                              u8 *mac, struct station_info *sinfo)
 677 {
 678         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 679         int ret = 0;
 680
 681         mwifiex_dump_station_info(priv, sinfo);
 682
 683         if (!priv->media_connected)
 684                 return -ENOENT;
 685         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 686                 return -ENOENT;
 687
 688
 689         ret = mwifiex_dump_station_info(priv, sinfo);
 690
 691         return ret;
 692 }
 693
 694 /* Supported rates to be advertised to the cfg80211 */
 695
 696 static struct ieee80211_rate mwifiex_rates[] = {
 697         {.bitrate = 10, .hw_value = 2, },
 698         {.bitrate = 20, .hw_value = 4, },
 699         {.bitrate = 55, .hw_value = 11, },
 700         {.bitrate = 110, .hw_value = 22, },
 701         {.bitrate = 220, .hw_value = 44, },
 702         {.bitrate = 60, .hw_value = 12, },
 703         {.bitrate = 90, .hw_value = 18, },
 704         {.bitrate = 120, .hw_value = 24, },
 705         {.bitrate = 180, .hw_value = 36, },
 706         {.bitrate = 240, .hw_value = 48, },
 707         {.bitrate = 360, .hw_value = 72, },
 708         {.bitrate = 480, .hw_value = 96, },
 709         {.bitrate = 540, .hw_value = 108, },
 710         {.bitrate = 720, .hw_value = 144, },
 711 };
 712
 713 /* Channel definitions to be advertised to cfg80211 */
 714
 715 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 716         {.center_freq = 2412, .hw_value = 1, },
 717         {.center_freq = 2417, .hw_value = 2, },
 718         {.center_freq = 2422, .hw_value = 3, },
 719         {.center_freq = 2427, .hw_value = 4, },
 720         {.center_freq = 2432, .hw_value = 5, },
 721         {.center_freq = 2437, .hw_value = 6, },
 722         {.center_freq = 2442, .hw_value = 7, },
 723         {.center_freq = 2447, .hw_value = 8, },
 724         {.center_freq = 2452, .hw_value = 9, },
 725         {.center_freq = 2457, .hw_value = 10, },
 726         {.center_freq = 2462, .hw_value = 11, },
 727         {.center_freq = 2467, .hw_value = 12, },
 728         {.center_freq = 2472, .hw_value = 13, },
 729         {.center_freq = 2484, .hw_value = 14, },
 730 };
 731
 732 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 733         .channels = mwifiex_channels_2ghz,
 734         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 735         .bitrates = mwifiex_rates,
 736         .n_bitrates = 14,
 737 };
 738
 739 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 740         {.center_freq = 5040, .hw_value = 8, },
 741         {.center_freq = 5060, .hw_value = 12, },
 742         {.center_freq = 5080, .hw_value = 16, },
 743         {.center_freq = 5170, .hw_value = 34, },
 744         {.center_freq = 5190, .hw_value = 38, },
 745         {.center_freq = 5210, .hw_value = 42, },
 746         {.center_freq = 5230, .hw_value = 46, },
 747         {.center_freq = 5180, .hw_value = 36, },
 748         {.center_freq = 5200, .hw_value = 40, },
 749         {.center_freq = 5220, .hw_value = 44, },
 750         {.center_freq = 5240, .hw_value = 48, },
 751         {.center_freq = 5260, .hw_value = 52, },
 752         {.center_freq = 5280, .hw_value = 56, },
 753         {.center_freq = 5300, .hw_value = 60, },
 754         {.center_freq = 5320, .hw_value = 64, },
 755         {.center_freq = 5500, .hw_value = 100, },
 756         {.center_freq = 5520, .hw_value = 104, },
 757         {.center_freq = 5540, .hw_value = 108, },
 758         {.center_freq = 5560, .hw_value = 112, },
 759         {.center_freq = 5580, .hw_value = 116, },
 760         {.center_freq = 5600, .hw_value = 120, },
 761         {.center_freq = 5620, .hw_value = 124, },
 762         {.center_freq = 5640, .hw_value = 128, },
 763         {.center_freq = 5660, .hw_value = 132, },
 764         {.center_freq = 5680, .hw_value = 136, },
 765         {.center_freq = 5700, .hw_value = 140, },
 766         {.center_freq = 5745, .hw_value = 149, },
 767         {.center_freq = 5765, .hw_value = 153, },
 768         {.center_freq = 5785, .hw_value = 157, },
 769         {.center_freq = 5805, .hw_value = 161, },
 770         {.center_freq = 5825, .hw_value = 165, },
 771 };
 772
 773 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 774         .channels = mwifiex_channels_5ghz,
 775         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 776         .bitrates = mwifiex_rates - 4,
 777         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 778 };
 779
 780
 781 /* Supported crypto cipher suits to be advertised to cfg80211 */
 782
 783 static const u32 mwifiex_cipher_suites[] = {
 784         WLAN_CIPHER_SUITE_WEP40,
 785         WLAN_CIPHER_SUITE_WEP104,
 786         WLAN_CIPHER_SUITE_TKIP,
 787         WLAN_CIPHER_SUITE_CCMP,
 788 };
 789
 790 /*
 791  * CFG802.11 operation handler for disconnection request.
 792  *
 793  * This function does not work when there is already a disconnection
 794  * procedure going on.
 795  */
 796 static int
 797 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 798                             u16 reason_code)
 799 {
 800         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 801
 802         if (priv->disconnect)
 803                 return -EBUSY;
 804
 805         priv->disconnect = 1;
 806         if (mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL))
 807                 return -EFAULT;
 808
 809         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 810                 " reason code %d\n", priv->cfg_bssid, reason_code);
 811
 812         queue_work(priv->workqueue, &priv->cfg_workqueue);
 813
 814         return 0;
 815 }
 816
 817 /*
 818  * This function informs the CFG802.11 subsystem of a new IBSS.
 819  *
 820  * The following information are sent to the CFG802.11 subsystem
 821  * to register the new IBSS. If we do not register the new IBSS,
 822  * a kernel panic will result.
 823  *      - SSID
 824  *      - SSID length
 825  *      - BSSID
 826  *      - Channel
 827  */
 828 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 829 {
 830         int ret = 0;
 831         struct ieee80211_channel *chan;
 832         struct mwifiex_bss_info bss_info;
 833         int ie_len = 0;
 834         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 835
 836         ret = mwifiex_get_bss_info(priv, &bss_info);
 837         if (ret)
 838                 return ret;
 839
 840         ie_buf[0] = WLAN_EID_SSID;
 841         ie_buf[1] = bss_info.ssid.ssid_len;
 842
 843         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 844                         &bss_info.ssid.ssid,
 845                         bss_info.ssid.ssid_len);
 846         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 847
 848         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 849                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 850                                                 priv->curr_bss_params.band));
 851
 852         cfg80211_inform_bss(priv->wdev->wiphy, chan,
 853                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 854                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 855         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 856
 857         return ret;
 858 }
 859
 860 /*
 861  * This function informs the CFG802.11 subsystem of a new BSS connection.
 862  *
 863  * The following information are sent to the CFG802.11 subsystem
 864  * to register the new BSS connection. If we do not register the new BSS,
 865  * a kernel panic will result.
 866  *      - MAC address
 867  *      - Capabilities
 868  *      - Beacon period
 869  *      - RSSI value
 870  *      - Channel
 871  *      - Supported rates IE
 872  *      - Extended capabilities IE
 873  *      - DS parameter set IE
 874  *      - HT Capability IE
 875  *      - Vendor Specific IE (221)
 876  *      - WPA IE
 877  *      - RSN IE
 878  */
 879 static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
 880                                                struct mwifiex_802_11_ssid *ssid)
 881 {
 882         struct mwifiex_scan_resp scan_resp;
 883         struct mwifiex_bssdescriptor *scan_table;
 884         int i, j;
 885         struct ieee80211_channel *chan;
 886         u8 *ie, *tmp, *ie_buf;
 887         u32 ie_len;
 888         u64 ts = 0;
 889         u8 *beacon;
 890         int beacon_size;
 891         u8 element_id, element_len;
 892
 893         memset(&scan_resp, 0, sizeof(scan_resp));
 894         if (mwifiex_get_scan_table(priv, MWIFIEX_IOCTL_WAIT, &scan_resp))
 895                 return -EFAULT;
 896
 897 #define MAX_IE_BUF      2048
 898         ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
 899         if (!ie_buf) {
 900                 dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
 901                                                 __func__);
 902                 return -ENOMEM;
 903         }
 904
 905         scan_table = (struct mwifiex_bssdescriptor *) scan_resp.scan_table;
 906         for (i = 0; i < scan_resp.num_in_scan_table; i++) {
 907                 if (ssid) {
 908                         /* Inform specific BSS only */
 909                         if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
 910                                            ssid->ssid_len))
 911                                 continue;
 912                 }
 913                 memset(ie_buf, 0, MAX_IE_BUF);
 914                 ie_buf[0] = WLAN_EID_SSID;
 915                 ie_buf[1] = scan_table[i].ssid.ssid_len;
 916                 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 917                        scan_table[i].ssid.ssid, ie_buf[1]);
 918
 919                 ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
 920                 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 921
 922                 ie[0] = WLAN_EID_SUPP_RATES;
 923
 924                 for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
 925                         if (!scan_table[i].supported_rates[j])
 926                                 break;
 927                         else
 928                                 ie[j + sizeof(struct ieee_types_header)] =
 929                                         scan_table[i].supported_rates[j];
 930                 }
 931
 932                 ie[1] = j;
 933                 ie_len += ie[1] + sizeof(struct ieee_types_header);
 934
 935                 beacon = scan_table[i].beacon_buf;
 936                 beacon_size = scan_table[i].beacon_buf_size;
 937
 938                 /* Skip time stamp, beacon interval and capability */
 939
 940                 if (beacon) {
 941                         beacon += sizeof(scan_table[i].beacon_period)
 942                                 + sizeof(scan_table[i].time_stamp) +
 943                                 +sizeof(scan_table[i].cap_info_bitmap);
 944
 945                         beacon_size -= sizeof(scan_table[i].beacon_period)
 946                                 + sizeof(scan_table[i].time_stamp)
 947                                 + sizeof(scan_table[i].cap_info_bitmap);
 948                 }
 949
 950                 while (beacon_size >= sizeof(struct ieee_types_header)) {
 951                         ie = ie_buf + ie_len;
 952                         element_id = *beacon;
 953                         element_len = *(beacon + 1);
 954                         if (beacon_size < (int) element_len +
 955                             sizeof(struct ieee_types_header)) {
 956                                 dev_err(priv->adapter->dev, "%s: in processing"
 957                                         " IE, bytes left < IE length\n",
 958                                         __func__);
 959                                 break;
 960                         }
 961                         switch (element_id) {
 962                         case WLAN_EID_EXT_CAPABILITY:
 963                         case WLAN_EID_DS_PARAMS:
 964                         case WLAN_EID_HT_CAPABILITY:
 965                         case WLAN_EID_VENDOR_SPECIFIC:
 966                         case WLAN_EID_RSN:
 967                         case WLAN_EID_BSS_AC_ACCESS_DELAY:
 968                                 ie[0] = element_id;
 969                                 ie[1] = element_len;
 970                                 tmp = (u8 *) beacon;
 971                                 memcpy(&ie[sizeof(struct ieee_types_header)],
 972                                        tmp + sizeof(struct ieee_types_header),
 973                                        element_len);
 974                                 ie_len += ie[1] +
 975                                         sizeof(struct ieee_types_header);
 976                                 break;
 977                         default:
 978                                 break;
 979                         }
 980                         beacon += element_len +
 981                                         sizeof(struct ieee_types_header);
 982                         beacon_size -= element_len +
 983                                         sizeof(struct ieee_types_header);
 984                 }
 985                 chan = ieee80211_get_channel(priv->wdev->wiphy,
 986                                                 scan_table[i].freq);
 987                 cfg80211_inform_bss(priv->wdev->wiphy, chan,
 988                                         scan_table[i].mac_address,
 989                                         ts, scan_table[i].cap_info_bitmap,
 990                                         scan_table[i].beacon_period,
 991                                         ie_buf, ie_len,
 992                                         scan_table[i].rssi, GFP_KERNEL);
 993         }
 994
 995         kfree(ie_buf);
 996         return 0;
 997 }
 998
 999 /*
1000  * This function connects with a BSS.
1001  *
1002  * This function handles both Infra and Ad-Hoc modes. It also performs
1003  * validity checking on the provided parameters, disconnects from the
1004  * current BSS (if any), sets up the association/scan parameters,
1005  * including security settings, and performs specific SSID scan before
1006  * trying to connect.
1007  *
1008  * For Infra mode, the function returns failure if the specified SSID
1009  * is not found in scan table. However, for Ad-Hoc mode, it can create
1010  * the IBSS if it does not exist. On successful completion in either case,
1011  * the function notifies the CFG802.11 subsystem of the new BSS connection,
1012  * otherwise the kernel will panic.
1013  */
1014 static int
1015 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1016                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1017                        struct cfg80211_connect_params *sme, bool privacy)
1018 {
1019         struct mwifiex_802_11_ssid req_ssid;
1020         struct mwifiex_ssid_bssid ssid_bssid;
1021         int ret = 0;
1022         int auth_type = 0, pairwise_encrypt_mode = 0, wpa_enabled = 0;
1023         int group_encrypt_mode = 0;
1024         int alg_is_wep = 0;
1025
1026         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
1027         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
1028
1029         req_ssid.ssid_len = ssid_len;
1030         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1031                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1032                 return -EINVAL;
1033         }
1034
1035         memcpy(req_ssid.ssid, ssid, ssid_len);
1036         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1037                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1038                 return -EINVAL;
1039         }
1040
1041         /* disconnect before try to associate */
1042         mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL);
1043
1044         if (channel)
1045                 ret = mwifiex_set_rf_channel(priv, channel,
1046                                 mwifiex_channels_to_cfg80211_channel_type
1047                                 (priv->adapter->chan_offset));
1048
1049         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
1050
1051         if (mode == NL80211_IFTYPE_ADHOC) {
1052                 /* "privacy" is set only for ad-hoc mode */
1053                 if (privacy) {
1054                         /*
1055                          * Keep MWIFIEX_ENCRYPTION_MODE_WEP104 for now so that
1056                          * the firmware can find a matching network from the
1057                          * scan. The cfg80211 does not give us the encryption
1058                          * mode at this stage so just setting it to WEP here.
1059                          */
1060                         priv->sec_info.encryption_mode =
1061                                         MWIFIEX_ENCRYPTION_MODE_WEP104;
1062                         priv->sec_info.authentication_mode =
1063                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1064                 }
1065
1066                 goto done;
1067         }
1068
1069         /* Now handle infra mode. "sme" is valid for infra mode only */
1070         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
1071                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1072                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1073         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1074                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1075
1076         if (sme->crypto.n_ciphers_pairwise) {
1077                 pairwise_encrypt_mode = mwifiex_get_mwifiex_cipher(sme->crypto.
1078                                         ciphers_pairwise[0], &wpa_enabled);
1079                 priv->sec_info.encryption_mode = pairwise_encrypt_mode;
1080                 priv->sec_info.authentication_mode = auth_type;
1081         }
1082
1083         if (sme->crypto.cipher_group) {
1084                 group_encrypt_mode = mwifiex_get_mwifiex_cipher(sme->crypto.
1085                                                    cipher_group, &wpa_enabled);
1086                 priv->sec_info.encryption_mode = group_encrypt_mode;
1087                 priv->sec_info.authentication_mode = auth_type;
1088         }
1089         if (sme->ie)
1090                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1091
1092         if (sme->key) {
1093                 alg_is_wep = mwifiex_is_alg_wep(pairwise_encrypt_mode)
1094                         | mwifiex_is_alg_wep(group_encrypt_mode);
1095                 if (alg_is_wep) {
1096                         dev_dbg(priv->adapter->dev,
1097                                 "info: setting wep encryption"
1098                                 " with key len %d\n", sme->key_len);
1099                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1100                                                         sme->key_idx, 0);
1101                 }
1102         }
1103 done:
1104         /* Do specific SSID scanning */
1105         if (mwifiex_request_scan(priv, MWIFIEX_IOCTL_WAIT, &req_ssid)) {
1106                 dev_err(priv->adapter->dev, "scan error\n");
1107                 return -EFAULT;
1108         }
1109
1110
1111         memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
1112
1113         if (mode != NL80211_IFTYPE_ADHOC) {
1114                 if (mwifiex_find_best_bss(priv, MWIFIEX_IOCTL_WAIT,
1115                                           &ssid_bssid))
1116                         return -EFAULT;
1117                 /* Inform the BSS information to kernel, otherwise
1118                  * kernel will give a panic after successful assoc */
1119                 if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
1120                         return -EFAULT;
1121         }
1122
1123         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
1124                (char *) req_ssid.ssid, ssid_bssid.bssid);
1125
1126         memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
1127
1128         /* Connect to BSS by ESSID */
1129         memset(&ssid_bssid.bssid, 0, ETH_ALEN);
1130
1131         if (mwifiex_bss_start(priv, MWIFIEX_IOCTL_WAIT, &ssid_bssid))
1132                 return -EFAULT;
1133
1134         if (mode == NL80211_IFTYPE_ADHOC) {
1135                 /* Inform the BSS information to kernel, otherwise
1136                  * kernel will give a panic after successful assoc */
1137                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1138                         return -EFAULT;
1139         }
1140
1141         return ret;
1142 }
1143
1144 /*
1145  * CFG802.11 operation handler for association request.
1146  *
1147  * This function does not work when the current mode is set to Ad-Hoc, or
1148  * when there is already an association procedure going on. The given BSS
1149  * information is used to associate.
1150  */
1151 static int
1152 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1153                          struct cfg80211_connect_params *sme)
1154 {
1155         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1156         int ret = 0;
1157
1158         if (priv->assoc_request)
1159                 return -EBUSY;
1160
1161         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1162                 wiphy_err(wiphy, "received infra assoc request "
1163                                 "when station is in ibss mode\n");
1164                 goto done;
1165         }
1166
1167         priv->assoc_request = 1;
1168
1169         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1170                (char *) sme->ssid, sme->bssid);
1171
1172         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1173                                      priv->bss_mode, sme->channel, sme, 0);
1174
1175 done:
1176         priv->assoc_result = ret;
1177         queue_work(priv->workqueue, &priv->cfg_workqueue);
1178         return ret;
1179 }
1180
1181 /*
1182  * CFG802.11 operation handler to join an IBSS.
1183  *
1184  * This function does not work in any mode other than Ad-Hoc, or if
1185  * a join operation is already in progress.
1186  */
1187 static int
1188 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1189                            struct cfg80211_ibss_params *params)
1190 {
1191         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1192         int ret = 0;
1193
1194         if (priv->ibss_join_request)
1195                 return -EBUSY;
1196
1197         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1198                 wiphy_err(wiphy, "request to join ibss received "
1199                                 "when station is not in ibss mode\n");
1200                 goto done;
1201         }
1202
1203         priv->ibss_join_request = 1;
1204
1205         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1206                (char *) params->ssid, params->bssid);
1207
1208         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1209                                 params->bssid, priv->bss_mode,
1210                                 params->channel, NULL, params->privacy);
1211 done:
1212         priv->ibss_join_result = ret;
1213         queue_work(priv->workqueue, &priv->cfg_workqueue);
1214         return ret;
1215 }
1216
1217 /*
1218  * CFG802.11 operation handler to leave an IBSS.
1219  *
1220  * This function does not work if a leave operation is
1221  * already in progress.
1222  */
1223 static int
1224 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1225 {
1226         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1227
1228         if (priv->disconnect)
1229                 return -EBUSY;
1230
1231         priv->disconnect = 1;
1232
1233         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1234                         priv->cfg_bssid);
1235         if (mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL))
1236                 return -EFAULT;
1237
1238         queue_work(priv->workqueue, &priv->cfg_workqueue);
1239
1240         return 0;
1241 }
1242
1243 /*
1244  * CFG802.11 operation handler for scan request.
1245  *
1246  * This function issues a scan request to the firmware based upon
1247  * the user specified scan configuration. On successfull completion,
1248  * it also informs the results.
1249  */
1250 static int
1251 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1252                       struct cfg80211_scan_request *request)
1253 {
1254         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1255
1256         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1257
1258         if (priv->scan_request && priv->scan_request != request)
1259                 return -EBUSY;
1260
1261         priv->scan_request = request;
1262
1263         queue_work(priv->workqueue, &priv->cfg_workqueue);
1264         return 0;
1265 }
1266
1267 /*
1268  * This function sets up the CFG802.11 specific HT capability fields
1269  * with default values.
1270  *
1271  * The following default values are set -
1272  *      - HT Supported = True
1273  *      - Maximum AMPDU length factor = 0x3
1274  *      - Minimum AMPDU spacing = 0x6
1275  *      - HT Capabilities map = IEEE80211_HT_CAP_SUP_WIDTH_20_40 (0x0002)
1276  *      - MCS information, Rx mask = 0xff
1277  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1278  */
1279 static void
1280 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1281                       struct mwifiex_private *priv)
1282 {
1283         int rx_mcs_supp;
1284         struct ieee80211_mcs_info mcs_set;
1285         u8 *mcs = (u8 *)&mcs_set;
1286         struct mwifiex_adapter *adapter = priv->adapter;
1287
1288         ht_info->ht_supported = true;
1289         ht_info->ampdu_factor = 0x3;
1290         ht_info->ampdu_density = 0x6;
1291
1292         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1293         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1294
1295         rx_mcs_supp = GET_RXMCSSUPP(priv->adapter->hw_dev_mcs_support);
1296         /* Set MCS for 1x1 */
1297         memset(mcs, 0xff, rx_mcs_supp);
1298         /* Clear all the other values */
1299         memset(&mcs[rx_mcs_supp], 0,
1300                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1301         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1302                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1303                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1304                 SETHT_MCS32(mcs_set.rx_mask);
1305
1306         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1307
1308         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1309 }
1310
1311 /* station cfg80211 operations */
1312 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1313         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1314         .scan = mwifiex_cfg80211_scan,
1315         .connect = mwifiex_cfg80211_connect,
1316         .disconnect = mwifiex_cfg80211_disconnect,
1317         .get_station = mwifiex_cfg80211_get_station,
1318         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1319         .set_channel = mwifiex_cfg80211_set_channel,
1320         .join_ibss = mwifiex_cfg80211_join_ibss,
1321         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1322         .add_key = mwifiex_cfg80211_add_key,
1323         .del_key = mwifiex_cfg80211_del_key,
1324         .set_default_key = mwifiex_cfg80211_set_default_key,
1325         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1326         .set_tx_power = mwifiex_cfg80211_set_tx_power,
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 net_device *dev, u8 *mac,
1337                               struct mwifiex_private *priv)
1338 {
1339         int ret = 0;
1340         void *wdev_priv = NULL;
1341         struct wireless_dev *wdev;
1342
1343         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1344         if (!wdev) {
1345                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1346                                                 __func__);
1347                 return -ENOMEM;
1348         }
1349         wdev->wiphy =
1350                 wiphy_new(&mwifiex_cfg80211_ops,
1351                           sizeof(struct mwifiex_private *));
1352         if (!wdev->wiphy)
1353                 return -ENOMEM;
1354         wdev->iftype = NL80211_IFTYPE_STATION;
1355         wdev->wiphy->max_scan_ssids = 10;
1356         wdev->wiphy->interface_modes =
1357                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1358         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1359         wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1360
1361         /* Initialize cipher suits */
1362         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1363         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1364
1365         /* Initialize parameters for 2GHz band */
1366
1367         mwifiex_setup_ht_caps(&wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap,
1368                                                                         priv);
1369         mwifiex_setup_ht_caps(&wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap,
1370                                                                         priv);
1371
1372         memcpy(wdev->wiphy->perm_addr, mac, 6);
1373         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1374
1375         /* We are using custom domains */
1376         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1377
1378         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1379
1380         /* Set struct mwifiex_private pointer in wiphy_priv */
1381         wdev_priv = wiphy_priv(wdev->wiphy);
1382
1383         *(unsigned long *) wdev_priv = (unsigned long) priv;
1384
1385         ret = wiphy_register(wdev->wiphy);
1386         if (ret < 0) {
1387                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1388                                                 __func__);
1389                 wiphy_free(wdev->wiphy);
1390                 return ret;
1391         } else {
1392                 dev_dbg(priv->adapter->dev,
1393                                 "info: successfully registered wiphy device\n");
1394         }
1395
1396         dev_net_set(dev, wiphy_net(wdev->wiphy));
1397         dev->ieee80211_ptr = wdev;
1398         memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
1399         memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
1400         SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
1401         priv->wdev = wdev;
1402
1403         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1404         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1405         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1406
1407         return ret;
1408 }
1409
1410 /*
1411  * This function handles the result of different pending network operations.
1412  *
1413  * The following operations are handled and CFG802.11 subsystem is
1414  * notified accordingly -
1415  *      - Scan request completion
1416  *      - Association request completion
1417  *      - IBSS join request completion
1418  *      - Disconnect request completion
1419  */
1420 void
1421 mwifiex_cfg80211_results(struct work_struct *work)
1422 {
1423         struct mwifiex_private *priv =
1424                 container_of(work, struct mwifiex_private, cfg_workqueue);
1425         struct mwifiex_user_scan_cfg *scan_req;
1426         int ret = 0, i;
1427         struct ieee80211_channel *chan;
1428
1429         if (priv->scan_request) {
1430                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1431                                    GFP_KERNEL);
1432                 if (!scan_req) {
1433                         dev_err(priv->adapter->dev, "failed to alloc "
1434                                                     "scan_req\n");
1435                         return;
1436                 }
1437                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1438                         memcpy(scan_req->ssid_list[i].ssid,
1439                                         priv->scan_request->ssids[i].ssid,
1440                                         priv->scan_request->ssids[i].ssid_len);
1441                         scan_req->ssid_list[i].max_len =
1442                                         priv->scan_request->ssids[i].ssid_len;
1443                 }
1444                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1445                         chan = priv->scan_request->channels[i];
1446                         scan_req->chan_list[i].chan_number = chan->hw_value;
1447                         scan_req->chan_list[i].radio_type = chan->band;
1448                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1449                                 scan_req->chan_list[i].scan_type =
1450                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1451                         else
1452                                 scan_req->chan_list[i].scan_type =
1453                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1454                         scan_req->chan_list[i].scan_time = 0;
1455                 }
1456                 if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
1457                         ret = -EFAULT;
1458                         goto done;
1459                 }
1460                 if (mwifiex_inform_bss_from_scan_result(priv, NULL))
1461                         ret = -EFAULT;
1462 done:
1463                 priv->scan_result_status = ret;
1464                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1465                                                         __func__);
1466                 cfg80211_scan_done(priv->scan_request,
1467                                 (priv->scan_result_status < 0));
1468                 priv->scan_request = NULL;
1469                 kfree(scan_req);
1470         }
1471
1472         if (priv->assoc_request) {
1473                 if (!priv->assoc_result) {
1474                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1475                                                 NULL, 0, NULL, 0,
1476                                                 WLAN_STATUS_SUCCESS,
1477                                                 GFP_KERNEL);
1478                         dev_dbg(priv->adapter->dev,
1479                                 "info: associated to bssid %pM successfully\n",
1480                                priv->cfg_bssid);
1481                 } else {
1482                         dev_dbg(priv->adapter->dev,
1483                                 "info: association to bssid %pM failed\n",
1484                                priv->cfg_bssid);
1485                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1486                 }
1487                 priv->assoc_request = 0;
1488                 priv->assoc_result = 0;
1489         }
1490
1491         if (priv->ibss_join_request) {
1492                 if (!priv->ibss_join_result) {
1493                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1494                                              GFP_KERNEL);
1495                         dev_dbg(priv->adapter->dev,
1496                                 "info: joined/created adhoc network with bssid"
1497                                         " %pM successfully\n", priv->cfg_bssid);
1498                 } else {
1499                         dev_dbg(priv->adapter->dev,
1500                                 "info: failed creating/joining adhoc network\n");
1501                 }
1502                 priv->ibss_join_request = 0;
1503                 priv->ibss_join_result = 0;
1504         }
1505
1506         if (priv->disconnect) {
1507                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1508                 priv->disconnect = 0;
1509         }
1510
1511         return;
1512 }