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         ret = mwifiex_set_encode(priv, NULL, 0, key_index, 0);
 232
 233         wiphy_dbg(wiphy, "info: set default Tx key index\n");
 234
 235         if (ret)
 236                 return -EFAULT;
 237
 238         return 0;
 239 }
 240
 241 /*
 242  * CFG802.11 operation handler to add a network key.
 243  */
 244 static int
 245 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 246                          u8 key_index, bool pairwise, const u8 *mac_addr,
 247                          struct key_params *params)
 248 {
 249         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 250         int ret = 0;
 251         int encrypt_mode;
 252
 253         encrypt_mode = mwifiex_get_mwifiex_cipher(params->cipher, NULL);
 254
 255         if (encrypt_mode != -1)
 256                 ret = mwifiex_set_encode(priv, params->key, params->key_len,
 257                                                 key_index, 0);
 258
 259         wiphy_dbg(wiphy, "info: crypto keys added\n");
 260
 261         if (ret)
 262                 return -EFAULT;
 263
 264         return 0;
 265 }
 266
 267 /*
 268  * This function sends domain information to the firmware.
 269  *
 270  * The following information are passed to the firmware -
 271  *      - Country codes
 272  *      - Sub bands (first channel, number of channels, maximum Tx power)
 273  */
 274 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 275 {
 276         u8 no_of_triplet = 0;
 277         struct ieee80211_country_ie_triplet *t;
 278         u8 no_of_parsed_chan = 0;
 279         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 280         u8 i, flag = 0;
 281         enum ieee80211_band band;
 282         struct ieee80211_supported_band *sband;
 283         struct ieee80211_channel *ch;
 284         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 285         struct mwifiex_adapter *adapter = priv->adapter;
 286         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 287         int ret = 0;
 288
 289         /* Set country code */
 290         domain_info->country_code[0] = priv->country_code[0];
 291         domain_info->country_code[1] = priv->country_code[1];
 292         domain_info->country_code[2] = ' ';
 293
 294         band = mwifiex_band_to_radio_type(adapter->config_bands);
 295         if (!wiphy->bands[band]) {
 296                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 297                 return -1;
 298         }
 299
 300         sband = wiphy->bands[band];
 301
 302         for (i = 0; i < sband->n_channels ; i++) {
 303                 ch = &sband->channels[i];
 304                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 305                         continue;
 306
 307                 if (!flag) {
 308                         flag = 1;
 309                         first_chan = (u32) ch->hw_value;
 310                         next_chan = first_chan;
 311                         max_pwr = ch->max_power;
 312                         no_of_parsed_chan = 1;
 313                         continue;
 314                 }
 315
 316                 if (ch->hw_value == next_chan + 1 &&
 317                                 ch->max_power == max_pwr) {
 318                         next_chan++;
 319                         no_of_parsed_chan++;
 320                 } else {
 321                         t = &domain_info->triplet[no_of_triplet];
 322                         t->chans.first_channel = first_chan;
 323                         t->chans.num_channels = no_of_parsed_chan;
 324                         t->chans.max_power = max_pwr;
 325                         no_of_triplet++;
 326                         first_chan = (u32) ch->hw_value;
 327                         next_chan = first_chan;
 328                         max_pwr = ch->max_power;
 329                         no_of_parsed_chan = 1;
 330                 }
 331         }
 332
 333         if (flag) {
 334                 t = &domain_info->triplet[no_of_triplet];
 335                 t->chans.first_channel = first_chan;
 336                 t->chans.num_channels = no_of_parsed_chan;
 337                 t->chans.max_power = max_pwr;
 338                 no_of_triplet++;
 339         }
 340
 341         domain_info->no_of_triplet = no_of_triplet;
 342         /* Send cmd to FW to set domain info */
 343         ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 344                                   HostCmd_ACT_GEN_SET, 0, NULL, NULL);
 345         if (ret)
 346                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 347
 348         return ret;
 349 }
 350
 351 /*
 352  * CFG802.11 regulatory domain callback function.
 353  *
 354  * This function is called when the regulatory domain is changed due to the
 355  * following reasons -
 356  *      - Set by driver
 357  *      - Set by system core
 358  *      - Set by user
 359  *      - Set bt Country IE
 360  */
 361 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 362                 struct regulatory_request *request)
 363 {
 364         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 365
 366         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 367                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 368
 369         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 370
 371         switch (request->initiator) {
 372         case NL80211_REGDOM_SET_BY_DRIVER:
 373         case NL80211_REGDOM_SET_BY_CORE:
 374         case NL80211_REGDOM_SET_BY_USER:
 375                 break;
 376                 /* Todo: apply driver specific changes in channel flags based
 377                    on the request initiator if necessary. */
 378         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 379                 break;
 380         }
 381         mwifiex_send_domain_info_cmd_fw(wiphy);
 382
 383         return 0;
 384 }
 385
 386 /*
 387  * This function sets the RF channel.
 388  *
 389  * This function creates multiple IOCTL requests, populates them accordingly
 390  * and issues them to set the band/channel and frequency.
 391  */
 392 static int
 393 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 394                        struct ieee80211_channel *chan,
 395                        enum nl80211_channel_type channel_type)
 396 {
 397         struct mwifiex_chan_freq_power cfp;
 398         int ret = 0;
 399         int status = 0;
 400         struct mwifiex_ds_band_cfg band_cfg;
 401         int mode;
 402         u8 wait_option = MWIFIEX_IOCTL_WAIT;
 403         u32 config_bands = 0;
 404         struct wiphy *wiphy = priv->wdev->wiphy;
 405
 406         mode = mwifiex_drv_get_mode(priv, wait_option);
 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 (mode == MWIFIEX_BSS_MODE_INFRA
 416                     || mode == MWIFIEX_BSS_MODE_AUTO) {
 417                         band_cfg.config_bands = config_bands;
 418                 } else if (mode == MWIFIEX_BSS_MODE_IBSS) {
 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, mode);
 436         if (!chan)
 437                 return ret;
 438
 439         memset(&cfp, 0, sizeof(cfp));
 440         cfp.freq = chan->center_freq;
 441         /* Convert frequency to channel */
 442         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 443
 444         status = mwifiex_bss_ioctl_channel(priv, HostCmd_ACT_GEN_SET, &cfp);
 445         if (status)
 446                 return -EFAULT;
 447
 448         ret = mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 449
 450         return ret;
 451 }
 452
 453 /*
 454  * CFG802.11 operation handler to set channel.
 455  *
 456  * This function can only be used when station is not connected.
 457  */
 458 static int
 459 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 460                              struct ieee80211_channel *chan,
 461                              enum nl80211_channel_type channel_type)
 462 {
 463         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 464
 465         if (priv->media_connected) {
 466                 wiphy_err(wiphy, "This setting is valid only when station "
 467                                 "is not connected\n");
 468                 return -EINVAL;
 469         }
 470
 471         return mwifiex_set_rf_channel(priv, chan, channel_type);
 472 }
 473
 474 /*
 475  * This function sets the fragmentation threshold.
 476  *
 477  * This function creates an IOCTL request, populates it accordingly
 478  * and issues an IOCTL.
 479  *
 480  * The fragmentation threshold value must lies between MWIFIEX_FRAG_MIN_VALUE
 481  * and MWIFIEX_FRAG_MAX_VALUE.
 482  */
 483 static int
 484 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 485 {
 486         int ret = 0;
 487         int status = 0;
 488         struct mwifiex_wait_queue *wait = NULL;
 489         u8 wait_option = MWIFIEX_IOCTL_WAIT;
 490
 491         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
 492             || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 493                 return -EINVAL;
 494
 495         wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
 496         if (!wait)
 497                 return -ENOMEM;
 498
 499         status = mwifiex_snmp_mib_ioctl(priv, wait, FRAG_THRESH_I,
 500                                         HostCmd_ACT_GEN_SET, &frag_thr);
 501
 502         if (mwifiex_request_ioctl(priv, wait, status, wait_option))
 503                 ret = -EFAULT;
 504
 505         kfree(wait);
 506         return ret;
 507 }
 508
 509 /*
 510  * This function sets the RTS threshold.
 511  *
 512  * This function creates an IOCTL request, populates it accordingly
 513  * and issues an IOCTL.
 514  */
 515 static int
 516 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 517 {
 518         int ret = 0;
 519         struct mwifiex_wait_queue *wait = NULL;
 520         int status = 0;
 521         u8 wait_option = MWIFIEX_IOCTL_WAIT;
 522
 523         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 524                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 525
 526         wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
 527         if (!wait)
 528                 return -ENOMEM;
 529
 530         status = mwifiex_snmp_mib_ioctl(priv, wait, RTS_THRESH_I,
 531                                         HostCmd_ACT_GEN_SET, &rts_thr);
 532
 533         if (mwifiex_request_ioctl(priv, wait, status, wait_option))
 534                 ret = -EFAULT;
 535
 536         kfree(wait);
 537         return ret;
 538 }
 539
 540 /*
 541  * CFG802.11 operation handler to set wiphy parameters.
 542  *
 543  * This function can be used to set the RTS threshold and the
 544  * Fragmentation threshold of the driver.
 545  */
 546 static int
 547 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 548 {
 549         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 550
 551         int ret = 0;
 552
 553         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 554                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 555
 556         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 557                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 558
 559         return ret;
 560 }
 561
 562 /*
 563  * CFG802.11 operation handler to change interface type.
 564  *
 565  * This function creates an IOCTL request, populates it accordingly
 566  * and issues an IOCTL.
 567  *
 568  * The function also maps the CFG802.11 mode type into driver mode type.
 569  *      NL80211_IFTYPE_ADHOC        -> MWIFIEX_BSS_MODE_IBSS
 570  *      NL80211_IFTYPE_STATION      -> MWIFIEX_BSS_MODE_INFRA
 571  *      NL80211_IFTYPE_UNSPECIFIED  -> MWIFIEX_BSS_MODE_AUTO
 572  */
 573 static int
 574 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 575                                      struct net_device *dev,
 576                                      enum nl80211_iftype type, u32 *flags,
 577                                      struct vif_params *params)
 578 {
 579         int ret = 0;
 580         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 581         int mode = -1;
 582         struct mwifiex_wait_queue *wait = NULL;
 583         int status = 0;
 584
 585         wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
 586         if (!wait)
 587                 return -ENOMEM;
 588
 589         switch (type) {
 590         case NL80211_IFTYPE_ADHOC:
 591                 mode = MWIFIEX_BSS_MODE_IBSS;
 592                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 593                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 594                 break;
 595         case NL80211_IFTYPE_STATION:
 596                 mode = MWIFIEX_BSS_MODE_INFRA;
 597                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 598                 wiphy_dbg(wiphy, "info: Setting interface type to managed\n");
 599                 break;
 600         case NL80211_IFTYPE_UNSPECIFIED:
 601                 mode = MWIFIEX_BSS_MODE_AUTO;
 602                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 603                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 604                 break;
 605         default:
 606                 ret = -EINVAL;
 607         }
 608         if (ret)
 609                 goto done;
 610         status = mwifiex_bss_ioctl_mode(priv, wait, HostCmd_ACT_GEN_SET, &mode);
 611
 612         if (mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT))
 613                 ret = -EFAULT;
 614
 615 done:
 616         kfree(wait);
 617         return ret;
 618 }
 619
 620 /*
 621  * This function dumps the station information on a buffer.
 622  *
 623  * The following information are shown -
 624  *      - Total bytes transmitted
 625  *      - Total bytes received
 626  *      - Total packets transmitted
 627  *      - Total packets received
 628  *      - Signal quality level
 629  *      - Transmission rate
 630  */
 631 static int
 632 mwifiex_dump_station_info(struct mwifiex_private *priv,
 633                           struct station_info *sinfo)
 634 {
 635         struct mwifiex_ds_get_signal signal;
 636         struct mwifiex_rate_cfg rate;
 637         int ret = 0;
 638
 639         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 640                 STATION_INFO_RX_PACKETS |
 641                 STATION_INFO_TX_PACKETS
 642                 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
 643
 644         /* Get signal information from the firmware */
 645         memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
 646         if (mwifiex_get_signal_info(priv, MWIFIEX_IOCTL_WAIT, &signal)) {
 647                 dev_err(priv->adapter->dev, "getting signal information\n");
 648                 ret = -EFAULT;
 649         }
 650
 651         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 652                 dev_err(priv->adapter->dev, "getting data rate\n");
 653                 ret = -EFAULT;
 654         }
 655
 656         sinfo->rx_bytes = priv->stats.rx_bytes;
 657         sinfo->tx_bytes = priv->stats.tx_bytes;
 658         sinfo->rx_packets = priv->stats.rx_packets;
 659         sinfo->tx_packets = priv->stats.tx_packets;
 660         sinfo->signal = priv->w_stats.qual.level;
 661         sinfo->txrate.legacy = rate.rate;
 662
 663         return ret;
 664 }
 665
 666 /*
 667  * CFG802.11 operation handler to get station information.
 668  *
 669  * This function only works in connected mode, and dumps the
 670  * requested station information, if available.
 671  */
 672 static int
 673 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 674                              u8 *mac, struct station_info *sinfo)
 675 {
 676         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 677         int ret = 0;
 678
 679         mwifiex_dump_station_info(priv, sinfo);
 680
 681         if (!priv->media_connected)
 682                 return -ENOENT;
 683         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 684                 return -ENOENT;
 685
 686
 687         ret = mwifiex_dump_station_info(priv, sinfo);
 688
 689         return ret;
 690 }
 691
 692 /* Supported rates to be advertised to the cfg80211 */
 693
 694 static struct ieee80211_rate mwifiex_rates[] = {
 695         {.bitrate = 10, .hw_value = 2, },
 696         {.bitrate = 20, .hw_value = 4, },
 697         {.bitrate = 55, .hw_value = 11, },
 698         {.bitrate = 110, .hw_value = 22, },
 699         {.bitrate = 220, .hw_value = 44, },
 700         {.bitrate = 60, .hw_value = 12, },
 701         {.bitrate = 90, .hw_value = 18, },
 702         {.bitrate = 120, .hw_value = 24, },
 703         {.bitrate = 180, .hw_value = 36, },
 704         {.bitrate = 240, .hw_value = 48, },
 705         {.bitrate = 360, .hw_value = 72, },
 706         {.bitrate = 480, .hw_value = 96, },
 707         {.bitrate = 540, .hw_value = 108, },
 708         {.bitrate = 720, .hw_value = 144, },
 709 };
 710
 711 /* Channel definitions to be advertised to cfg80211 */
 712
 713 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 714         {.center_freq = 2412, .hw_value = 1, },
 715         {.center_freq = 2417, .hw_value = 2, },
 716         {.center_freq = 2422, .hw_value = 3, },
 717         {.center_freq = 2427, .hw_value = 4, },
 718         {.center_freq = 2432, .hw_value = 5, },
 719         {.center_freq = 2437, .hw_value = 6, },
 720         {.center_freq = 2442, .hw_value = 7, },
 721         {.center_freq = 2447, .hw_value = 8, },
 722         {.center_freq = 2452, .hw_value = 9, },
 723         {.center_freq = 2457, .hw_value = 10, },
 724         {.center_freq = 2462, .hw_value = 11, },
 725         {.center_freq = 2467, .hw_value = 12, },
 726         {.center_freq = 2472, .hw_value = 13, },
 727         {.center_freq = 2484, .hw_value = 14, },
 728 };
 729
 730 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 731         .channels = mwifiex_channels_2ghz,
 732         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 733         .bitrates = mwifiex_rates,
 734         .n_bitrates = 14,
 735 };
 736
 737 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 738         {.center_freq = 5040, .hw_value = 8, },
 739         {.center_freq = 5060, .hw_value = 12, },
 740         {.center_freq = 5080, .hw_value = 16, },
 741         {.center_freq = 5170, .hw_value = 34, },
 742         {.center_freq = 5190, .hw_value = 38, },
 743         {.center_freq = 5210, .hw_value = 42, },
 744         {.center_freq = 5230, .hw_value = 46, },
 745         {.center_freq = 5180, .hw_value = 36, },
 746         {.center_freq = 5200, .hw_value = 40, },
 747         {.center_freq = 5220, .hw_value = 44, },
 748         {.center_freq = 5240, .hw_value = 48, },
 749         {.center_freq = 5260, .hw_value = 52, },
 750         {.center_freq = 5280, .hw_value = 56, },
 751         {.center_freq = 5300, .hw_value = 60, },
 752         {.center_freq = 5320, .hw_value = 64, },
 753         {.center_freq = 5500, .hw_value = 100, },
 754         {.center_freq = 5520, .hw_value = 104, },
 755         {.center_freq = 5540, .hw_value = 108, },
 756         {.center_freq = 5560, .hw_value = 112, },
 757         {.center_freq = 5580, .hw_value = 116, },
 758         {.center_freq = 5600, .hw_value = 120, },
 759         {.center_freq = 5620, .hw_value = 124, },
 760         {.center_freq = 5640, .hw_value = 128, },
 761         {.center_freq = 5660, .hw_value = 132, },
 762         {.center_freq = 5680, .hw_value = 136, },
 763         {.center_freq = 5700, .hw_value = 140, },
 764         {.center_freq = 5745, .hw_value = 149, },
 765         {.center_freq = 5765, .hw_value = 153, },
 766         {.center_freq = 5785, .hw_value = 157, },
 767         {.center_freq = 5805, .hw_value = 161, },
 768         {.center_freq = 5825, .hw_value = 165, },
 769 };
 770
 771 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 772         .channels = mwifiex_channels_5ghz,
 773         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 774         .bitrates = mwifiex_rates - 4,
 775         .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
 776 };
 777
 778
 779 /* Supported crypto cipher suits to be advertised to cfg80211 */
 780
 781 static const u32 mwifiex_cipher_suites[] = {
 782         WLAN_CIPHER_SUITE_WEP40,
 783         WLAN_CIPHER_SUITE_WEP104,
 784         WLAN_CIPHER_SUITE_TKIP,
 785         WLAN_CIPHER_SUITE_CCMP,
 786 };
 787
 788 /*
 789  * CFG802.11 operation handler for disconnection request.
 790  *
 791  * This function does not work when there is already a disconnection
 792  * procedure going on.
 793  */
 794 static int
 795 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
 796                             u16 reason_code)
 797 {
 798         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 799
 800         if (priv->disconnect)
 801                 return -EBUSY;
 802
 803         priv->disconnect = 1;
 804         if (mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL))
 805                 return -EFAULT;
 806
 807         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
 808                 " reason code %d\n", priv->cfg_bssid, reason_code);
 809
 810         queue_work(priv->workqueue, &priv->cfg_workqueue);
 811
 812         return 0;
 813 }
 814
 815 /*
 816  * This function informs the CFG802.11 subsystem of a new IBSS.
 817  *
 818  * The following information are sent to the CFG802.11 subsystem
 819  * to register the new IBSS. If we do not register the new IBSS,
 820  * a kernel panic will result.
 821  *      - SSID
 822  *      - SSID length
 823  *      - BSSID
 824  *      - Channel
 825  */
 826 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
 827 {
 828         int ret = 0;
 829         struct ieee80211_channel *chan;
 830         struct mwifiex_bss_info bss_info;
 831         int ie_len = 0;
 832         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
 833
 834         ret = mwifiex_get_bss_info(priv, &bss_info);
 835         if (ret)
 836                 return ret;
 837
 838         ie_buf[0] = WLAN_EID_SSID;
 839         ie_buf[1] = bss_info.ssid.ssid_len;
 840
 841         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 842                         &bss_info.ssid.ssid,
 843                         bss_info.ssid.ssid_len);
 844         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 845
 846         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 847                         ieee80211_channel_to_frequency(bss_info.bss_chan,
 848                                                 priv->curr_bss_params.band));
 849
 850         cfg80211_inform_bss(priv->wdev->wiphy, chan,
 851                 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
 852                 0, ie_buf, ie_len, 0, GFP_KERNEL);
 853         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
 854
 855         return ret;
 856 }
 857
 858 /*
 859  * This function informs the CFG802.11 subsystem of a new BSS connection.
 860  *
 861  * The following information are sent to the CFG802.11 subsystem
 862  * to register the new BSS connection. If we do not register the new BSS,
 863  * a kernel panic will result.
 864  *      - MAC address
 865  *      - Capabilities
 866  *      - Beacon period
 867  *      - RSSI value
 868  *      - Channel
 869  *      - Supported rates IE
 870  *      - Extended capabilities IE
 871  *      - DS parameter set IE
 872  *      - HT Capability IE
 873  *      - Vendor Specific IE (221)
 874  *      - WPA IE
 875  *      - RSN IE
 876  */
 877 static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
 878                                                struct mwifiex_802_11_ssid *ssid)
 879 {
 880         struct mwifiex_scan_resp scan_resp;
 881         struct mwifiex_bssdescriptor *scan_table;
 882         int i, j;
 883         struct ieee80211_channel *chan;
 884         u8 *ie, *tmp, *ie_buf;
 885         u32 ie_len;
 886         u64 ts = 0;
 887         u8 *beacon;
 888         int beacon_size;
 889         u8 element_id, element_len;
 890
 891         memset(&scan_resp, 0, sizeof(scan_resp));
 892         if (mwifiex_get_scan_table(priv, MWIFIEX_IOCTL_WAIT, &scan_resp))
 893                 return -EFAULT;
 894
 895 #define MAX_IE_BUF      2048
 896         ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
 897         if (!ie_buf) {
 898                 dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
 899                                                 __func__);
 900                 return -ENOMEM;
 901         }
 902
 903         scan_table = (struct mwifiex_bssdescriptor *) scan_resp.scan_table;
 904         for (i = 0; i < scan_resp.num_in_scan_table; i++) {
 905                 if (ssid) {
 906                         /* Inform specific BSS only */
 907                         if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
 908                                            ssid->ssid_len))
 909                                 continue;
 910                 }
 911                 memset(ie_buf, 0, MAX_IE_BUF);
 912                 ie_buf[0] = WLAN_EID_SSID;
 913                 ie_buf[1] = scan_table[i].ssid.ssid_len;
 914                 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
 915                        scan_table[i].ssid.ssid, ie_buf[1]);
 916
 917                 ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
 918                 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
 919
 920                 ie[0] = WLAN_EID_SUPP_RATES;
 921
 922                 for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
 923                         if (!scan_table[i].supported_rates[j])
 924                                 break;
 925                         else
 926                                 ie[j + sizeof(struct ieee_types_header)] =
 927                                         scan_table[i].supported_rates[j];
 928                 }
 929
 930                 ie[1] = j;
 931                 ie_len += ie[1] + sizeof(struct ieee_types_header);
 932
 933                 beacon = scan_table[i].beacon_buf;
 934                 beacon_size = scan_table[i].beacon_buf_size;
 935
 936                 /* Skip time stamp, beacon interval and capability */
 937
 938                 if (beacon) {
 939                         beacon += sizeof(scan_table[i].beacon_period)
 940                                 + sizeof(scan_table[i].time_stamp) +
 941                                 +sizeof(scan_table[i].cap_info_bitmap);
 942
 943                         beacon_size -= sizeof(scan_table[i].beacon_period)
 944                                 + sizeof(scan_table[i].time_stamp)
 945                                 + sizeof(scan_table[i].cap_info_bitmap);
 946                 }
 947
 948                 while (beacon_size >= sizeof(struct ieee_types_header)) {
 949                         ie = ie_buf + ie_len;
 950                         element_id = *beacon;
 951                         element_len = *(beacon + 1);
 952                         if (beacon_size < (int) element_len +
 953                             sizeof(struct ieee_types_header)) {
 954                                 dev_err(priv->adapter->dev, "%s: in processing"
 955                                         " IE, bytes left < IE length\n",
 956                                         __func__);
 957                                 break;
 958                         }
 959                         switch (element_id) {
 960                         case WLAN_EID_EXT_CAPABILITY:
 961                         case WLAN_EID_DS_PARAMS:
 962                         case WLAN_EID_HT_CAPABILITY:
 963                         case WLAN_EID_VENDOR_SPECIFIC:
 964                         case WLAN_EID_RSN:
 965                         case WLAN_EID_BSS_AC_ACCESS_DELAY:
 966                                 ie[0] = element_id;
 967                                 ie[1] = element_len;
 968                                 tmp = (u8 *) beacon;
 969                                 memcpy(&ie[sizeof(struct ieee_types_header)],
 970                                        tmp + sizeof(struct ieee_types_header),
 971                                        element_len);
 972                                 ie_len += ie[1] +
 973                                         sizeof(struct ieee_types_header);
 974                                 break;
 975                         default:
 976                                 break;
 977                         }
 978                         beacon += element_len +
 979                                         sizeof(struct ieee_types_header);
 980                         beacon_size -= element_len +
 981                                         sizeof(struct ieee_types_header);
 982                 }
 983                 chan = ieee80211_get_channel(priv->wdev->wiphy,
 984                                                 scan_table[i].freq);
 985                 cfg80211_inform_bss(priv->wdev->wiphy, chan,
 986                                         scan_table[i].mac_address,
 987                                         ts, scan_table[i].cap_info_bitmap,
 988                                         scan_table[i].beacon_period,
 989                                         ie_buf, ie_len,
 990                                         scan_table[i].rssi, GFP_KERNEL);
 991         }
 992
 993         kfree(ie_buf);
 994         return 0;
 995 }
 996
 997 /*
 998  * This function connects with a BSS.
 999  *
1000  * This function handles both Infra and Ad-Hoc modes. It also performs
1001  * validity checking on the provided parameters, disconnects from the
1002  * current BSS (if any), sets up the association/scan parameters,
1003  * including security settings, and performs specific SSID scan before
1004  * trying to connect.
1005  *
1006  * For Infra mode, the function returns failure if the specified SSID
1007  * is not found in scan table. However, for Ad-Hoc mode, it can create
1008  * the IBSS if it does not exist. On successful completion in either case,
1009  * the function notifies the CFG802.11 subsystem of the new BSS connection,
1010  * otherwise the kernel will panic.
1011  */
1012 static int
1013 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1014                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1015                        struct cfg80211_connect_params *sme, bool privacy)
1016 {
1017         struct mwifiex_802_11_ssid req_ssid;
1018         struct mwifiex_ssid_bssid ssid_bssid;
1019         int ret = 0;
1020         int auth_type = 0, pairwise_encrypt_mode = 0, wpa_enabled = 0;
1021         int group_encrypt_mode = 0;
1022         int alg_is_wep = 0;
1023
1024         memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
1025         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
1026
1027         req_ssid.ssid_len = ssid_len;
1028         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1029                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1030                 return -EINVAL;
1031         }
1032
1033         memcpy(req_ssid.ssid, ssid, ssid_len);
1034         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1035                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1036                 return -EINVAL;
1037         }
1038
1039         /* disconnect before try to associate */
1040         mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL);
1041
1042         if (channel)
1043                 ret = mwifiex_set_rf_channel(priv, channel,
1044                                 mwifiex_channels_to_cfg80211_channel_type
1045                                 (priv->adapter->chan_offset));
1046
1047         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);  /* Disable keys */
1048
1049         if (mode == MWIFIEX_BSS_MODE_IBSS) {
1050                 /* "privacy" is set only for ad-hoc mode */
1051                 if (privacy) {
1052                         /*
1053                          * Keep MWIFIEX_ENCRYPTION_MODE_WEP104 for now so that
1054                          * the firmware can find a matching network from the
1055                          * scan. The cfg80211 does not give us the encryption
1056                          * mode at this stage so just setting it to WEP here.
1057                          */
1058                         priv->sec_info.encryption_mode =
1059                                         MWIFIEX_ENCRYPTION_MODE_WEP104;
1060                         priv->sec_info.authentication_mode =
1061                                         MWIFIEX_AUTH_MODE_OPEN;
1062                 }
1063
1064                 goto done;
1065         }
1066
1067         /* Now handle infra mode. "sme" is valid for infra mode only */
1068         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
1069                         || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1070                 auth_type = MWIFIEX_AUTH_MODE_OPEN;
1071         else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1072                 auth_type = MWIFIEX_AUTH_MODE_SHARED;
1073
1074         if (sme->crypto.n_ciphers_pairwise) {
1075                 pairwise_encrypt_mode = mwifiex_get_mwifiex_cipher(sme->crypto.
1076                                         ciphers_pairwise[0], &wpa_enabled);
1077                 priv->sec_info.encryption_mode = pairwise_encrypt_mode;
1078                 priv->sec_info.authentication_mode = auth_type;
1079         }
1080
1081         if (sme->crypto.cipher_group) {
1082                 group_encrypt_mode = mwifiex_get_mwifiex_cipher(sme->crypto.
1083                                                    cipher_group, &wpa_enabled);
1084                 priv->sec_info.encryption_mode = group_encrypt_mode;
1085                 priv->sec_info.authentication_mode = auth_type;
1086         }
1087         if (sme->ie)
1088                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1089
1090         if (sme->key) {
1091                 alg_is_wep = mwifiex_is_alg_wep(pairwise_encrypt_mode)
1092                         | mwifiex_is_alg_wep(group_encrypt_mode);
1093                 if (alg_is_wep) {
1094                         dev_dbg(priv->adapter->dev,
1095                                 "info: setting wep encryption"
1096                                 " with key len %d\n", sme->key_len);
1097                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1098                                                         sme->key_idx, 0);
1099                 }
1100         }
1101 done:
1102         /* Do specific SSID scanning */
1103         if (mwifiex_request_scan(priv, MWIFIEX_IOCTL_WAIT, &req_ssid)) {
1104                 dev_err(priv->adapter->dev, "scan error\n");
1105                 return -EFAULT;
1106         }
1107
1108
1109         memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));
1110
1111         if (mode != MWIFIEX_BSS_MODE_IBSS) {
1112                 if (mwifiex_find_best_bss(priv, MWIFIEX_IOCTL_WAIT,
1113                                           &ssid_bssid))
1114                         return -EFAULT;
1115                 /* Inform the BSS information to kernel, otherwise
1116                  * kernel will give a panic after successful assoc */
1117                 if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
1118                         return -EFAULT;
1119         }
1120
1121         dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
1122                (char *) req_ssid.ssid, ssid_bssid.bssid);
1123
1124         memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);
1125
1126         /* Connect to BSS by ESSID */
1127         memset(&ssid_bssid.bssid, 0, ETH_ALEN);
1128
1129         if (mwifiex_bss_start(priv, MWIFIEX_IOCTL_WAIT, &ssid_bssid))
1130                 return -EFAULT;
1131
1132         if (mode == MWIFIEX_BSS_MODE_IBSS) {
1133                 /* Inform the BSS information to kernel, otherwise
1134                  * kernel will give a panic after successful assoc */
1135                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1136                         return -EFAULT;
1137         }
1138
1139         return ret;
1140 }
1141
1142 /*
1143  * CFG802.11 operation handler for association request.
1144  *
1145  * This function does not work when the current mode is set to Ad-Hoc, or
1146  * when there is already an association procedure going on. The given BSS
1147  * information is used to associate.
1148  */
1149 static int
1150 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1151                          struct cfg80211_connect_params *sme)
1152 {
1153         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1154         int ret = 0;
1155         int mode = 0;
1156
1157         if (priv->assoc_request)
1158                 return -EBUSY;
1159
1160         mode = mwifiex_drv_get_mode(priv, MWIFIEX_IOCTL_WAIT);
1161
1162         if (mode == MWIFIEX_BSS_MODE_IBSS) {
1163                 wiphy_err(wiphy, "received infra assoc request "
1164                                 "when station is in ibss mode\n");
1165                 goto done;
1166         }
1167
1168         priv->assoc_request = 1;
1169
1170         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1171                (char *) sme->ssid, sme->bssid);
1172
1173         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1174                                      mode, sme->channel, sme, 0);
1175
1176 done:
1177         priv->assoc_result = ret;
1178         queue_work(priv->workqueue, &priv->cfg_workqueue);
1179         return ret;
1180 }
1181
1182 /*
1183  * CFG802.11 operation handler to join an IBSS.
1184  *
1185  * This function does not work in any mode other than Ad-Hoc, or if
1186  * a join operation is already in progress.
1187  */
1188 static int
1189 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1190                            struct cfg80211_ibss_params *params)
1191 {
1192         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1193         int ret = 0;
1194         int mode = 0;
1195
1196         if (priv->ibss_join_request)
1197                 return -EBUSY;
1198
1199         mode = mwifiex_drv_get_mode(priv, MWIFIEX_IOCTL_WAIT);
1200         if (mode != MWIFIEX_BSS_MODE_IBSS) {
1201                 wiphy_err(wiphy, "request to join ibss received "
1202                                 "when station is not in ibss mode\n");
1203                 goto done;
1204         }
1205
1206         priv->ibss_join_request = 1;
1207
1208         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1209                (char *) params->ssid, params->bssid);
1210
1211         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1212                                      params->bssid, mode, params->channel, NULL,
1213                                      params->privacy);
1214 done:
1215         priv->ibss_join_result = ret;
1216         queue_work(priv->workqueue, &priv->cfg_workqueue);
1217         return ret;
1218 }
1219
1220 /*
1221  * CFG802.11 operation handler to leave an IBSS.
1222  *
1223  * This function does not work if a leave operation is
1224  * already in progress.
1225  */
1226 static int
1227 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1228 {
1229         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1230
1231         if (priv->disconnect)
1232                 return -EBUSY;
1233
1234         priv->disconnect = 1;
1235
1236         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1237                         priv->cfg_bssid);
1238         if (mwifiex_disconnect(priv, MWIFIEX_IOCTL_WAIT, NULL))
1239                 return -EFAULT;
1240
1241         queue_work(priv->workqueue, &priv->cfg_workqueue);
1242
1243         return 0;
1244 }
1245
1246 /*
1247  * CFG802.11 operation handler for scan request.
1248  *
1249  * This function issues a scan request to the firmware based upon
1250  * the user specified scan configuration. On successfull completion,
1251  * it also informs the results.
1252  */
1253 static int
1254 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1255                       struct cfg80211_scan_request *request)
1256 {
1257         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1258
1259         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1260
1261         if (priv->scan_request && priv->scan_request != request)
1262                 return -EBUSY;
1263
1264         priv->scan_request = request;
1265
1266         queue_work(priv->workqueue, &priv->cfg_workqueue);
1267         return 0;
1268 }
1269
1270 /*
1271  * This function sets up the CFG802.11 specific HT capability fields
1272  * with default values.
1273  *
1274  * The following default values are set -
1275  *      - HT Supported = True
1276  *      - Maximum AMPDU length factor = 0x3
1277  *      - Minimum AMPDU spacing = 0x6
1278  *      - HT Capabilities map = IEEE80211_HT_CAP_SUP_WIDTH_20_40 (0x0002)
1279  *      - MCS information, Rx mask = 0xff
1280  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1281  */
1282 static void
1283 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1284                       struct mwifiex_private *priv)
1285 {
1286         int rx_mcs_supp;
1287         struct ieee80211_mcs_info mcs_set;
1288         u8 *mcs = (u8 *)&mcs_set;
1289         struct mwifiex_adapter *adapter = priv->adapter;
1290
1291         ht_info->ht_supported = true;
1292         ht_info->ampdu_factor = 0x3;
1293         ht_info->ampdu_density = 0x6;
1294
1295         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1296         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1297
1298         rx_mcs_supp = GET_RXMCSSUPP(priv->adapter->hw_dev_mcs_support);
1299         /* Set MCS for 1x1 */
1300         memset(mcs, 0xff, rx_mcs_supp);
1301         /* Clear all the other values */
1302         memset(&mcs[rx_mcs_supp], 0,
1303                         sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1304         if (priv->bss_mode == MWIFIEX_BSS_MODE_INFRA ||
1305                         ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1306                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1307                 SETHT_MCS32(mcs_set.rx_mask);
1308
1309         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1310
1311         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1312 }
1313
1314 /* station cfg80211 operations */
1315 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1316         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1317         .scan = mwifiex_cfg80211_scan,
1318         .connect = mwifiex_cfg80211_connect,
1319         .disconnect = mwifiex_cfg80211_disconnect,
1320         .get_station = mwifiex_cfg80211_get_station,
1321         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1322         .set_channel = mwifiex_cfg80211_set_channel,
1323         .join_ibss = mwifiex_cfg80211_join_ibss,
1324         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1325         .add_key = mwifiex_cfg80211_add_key,
1326         .del_key = mwifiex_cfg80211_del_key,
1327         .set_default_key = mwifiex_cfg80211_set_default_key,
1328         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1329         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1330 };
1331
1332 /*
1333  * This function registers the device with CFG802.11 subsystem.
1334  *
1335  * The function creates the wireless device/wiphy, populates it with
1336  * default parameters and handler function pointers, and finally
1337  * registers the device.
1338  */
1339 int mwifiex_register_cfg80211(struct net_device *dev, u8 *mac,
1340                               struct mwifiex_private *priv)
1341 {
1342         int ret = 0;
1343         void *wdev_priv = NULL;
1344         struct wireless_dev *wdev;
1345
1346         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1347         if (!wdev) {
1348                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1349                                                 __func__);
1350                 return -ENOMEM;
1351         }
1352         wdev->wiphy =
1353                 wiphy_new(&mwifiex_cfg80211_ops,
1354                           sizeof(struct mwifiex_private *));
1355         if (!wdev->wiphy)
1356                 return -ENOMEM;
1357         wdev->iftype = NL80211_IFTYPE_STATION;
1358         wdev->wiphy->max_scan_ssids = 10;
1359         wdev->wiphy->interface_modes =
1360                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1361         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1362         wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1363
1364         /* Initialize cipher suits */
1365         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1366         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1367
1368         /* Initialize parameters for 2GHz band */
1369
1370         mwifiex_setup_ht_caps(&wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap,
1371                                                                         priv);
1372         mwifiex_setup_ht_caps(&wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap,
1373                                                                         priv);
1374
1375         memcpy(wdev->wiphy->perm_addr, mac, 6);
1376         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1377
1378         /* We are using custom domains */
1379         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1380
1381         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1382
1383         /* Set struct mwifiex_private pointer in wiphy_priv */
1384         wdev_priv = wiphy_priv(wdev->wiphy);
1385
1386         *(unsigned long *) wdev_priv = (unsigned long) priv;
1387
1388         ret = wiphy_register(wdev->wiphy);
1389         if (ret < 0) {
1390                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1391                                                 __func__);
1392                 wiphy_free(wdev->wiphy);
1393                 return ret;
1394         } else {
1395                 dev_dbg(priv->adapter->dev,
1396                                 "info: successfully registered wiphy device\n");
1397         }
1398
1399         dev_net_set(dev, wiphy_net(wdev->wiphy));
1400         dev->ieee80211_ptr = wdev;
1401         memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
1402         memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
1403         SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
1404         priv->wdev = wdev;
1405
1406         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1407         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1408         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1409
1410         return ret;
1411 }
1412
1413 /*
1414  * This function handles the result of different pending network operations.
1415  *
1416  * The following operations are handled and CFG802.11 subsystem is
1417  * notified accordingly -
1418  *      - Scan request completion
1419  *      - Association request completion
1420  *      - IBSS join request completion
1421  *      - Disconnect request completion
1422  */
1423 void
1424 mwifiex_cfg80211_results(struct work_struct *work)
1425 {
1426         struct mwifiex_private *priv =
1427                 container_of(work, struct mwifiex_private, cfg_workqueue);
1428         struct mwifiex_user_scan_cfg *scan_req;
1429         int ret = 0, i;
1430         struct ieee80211_channel *chan;
1431
1432         if (priv->scan_request) {
1433                 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1434                                    GFP_KERNEL);
1435                 if (!scan_req) {
1436                         dev_err(priv->adapter->dev, "failed to alloc "
1437                                                     "scan_req\n");
1438                         return;
1439                 }
1440                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1441                         memcpy(scan_req->ssid_list[i].ssid,
1442                                         priv->scan_request->ssids[i].ssid,
1443                                         priv->scan_request->ssids[i].ssid_len);
1444                         scan_req->ssid_list[i].max_len =
1445                                         priv->scan_request->ssids[i].ssid_len;
1446                 }
1447                 for (i = 0; i < priv->scan_request->n_channels; i++) {
1448                         chan = priv->scan_request->channels[i];
1449                         scan_req->chan_list[i].chan_number = chan->hw_value;
1450                         scan_req->chan_list[i].radio_type = chan->band;
1451                         if (chan->flags & IEEE80211_CHAN_DISABLED)
1452                                 scan_req->chan_list[i].scan_type =
1453                                         MWIFIEX_SCAN_TYPE_PASSIVE;
1454                         else
1455                                 scan_req->chan_list[i].scan_type =
1456                                         MWIFIEX_SCAN_TYPE_ACTIVE;
1457                         scan_req->chan_list[i].scan_time = 0;
1458                 }
1459                 if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
1460                         ret = -EFAULT;
1461                         goto done;
1462                 }
1463                 if (mwifiex_inform_bss_from_scan_result(priv, NULL))
1464                         ret = -EFAULT;
1465 done:
1466                 priv->scan_result_status = ret;
1467                 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1468                                                         __func__);
1469                 cfg80211_scan_done(priv->scan_request,
1470                                 (priv->scan_result_status < 0));
1471                 priv->scan_request = NULL;
1472                 kfree(scan_req);
1473         }
1474
1475         if (priv->assoc_request) {
1476                 if (!priv->assoc_result) {
1477                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1478                                                 NULL, 0, NULL, 0,
1479                                                 WLAN_STATUS_SUCCESS,
1480                                                 GFP_KERNEL);
1481                         dev_dbg(priv->adapter->dev,
1482                                 "info: associated to bssid %pM successfully\n",
1483                                priv->cfg_bssid);
1484                 } else {
1485                         dev_dbg(priv->adapter->dev,
1486                                 "info: association to bssid %pM failed\n",
1487                                priv->cfg_bssid);
1488                         memset(priv->cfg_bssid, 0, ETH_ALEN);
1489                 }
1490                 priv->assoc_request = 0;
1491                 priv->assoc_result = 0;
1492         }
1493
1494         if (priv->ibss_join_request) {
1495                 if (!priv->ibss_join_result) {
1496                         cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1497                                              GFP_KERNEL);
1498                         dev_dbg(priv->adapter->dev,
1499                                 "info: joined/created adhoc network with bssid"
1500                                         " %pM successfully\n", priv->cfg_bssid);
1501                 } else {
1502                         dev_dbg(priv->adapter->dev,
1503                                 "info: failed creating/joining adhoc network\n");
1504                 }
1505                 priv->ibss_join_request = 0;
1506                 priv->ibss_join_result = 0;
1507         }
1508
1509         if (priv->disconnect) {
1510                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1511                 priv->disconnect = 0;
1512         }
1513
1514         return;
1515 }