drivers/net/wireless/mwifiex/cfg80211.c

   1 /*
   2  * Marvell Wireless LAN device driver: CFG80211
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "cfg80211.h"
  21 #include "main.h"
  22
  23 static const struct ieee80211_regdomain mwifiex_world_regdom_custom = {
  24         .n_reg_rules = 7,
  25         .alpha2 =  "99",
  26         .reg_rules = {
  27                 /* Channel 1 - 11 */
  28                 REG_RULE(2412-10, 2462+10, 40, 3, 20, 0),
  29                 /* Channel 12 - 13 */
  30                 REG_RULE(2467-10, 2472+10, 20, 3, 20,
  31                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  32                 /* Channel 14 */
  33                 REG_RULE(2484-10, 2484+10, 20, 3, 20,
  34                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  35                          NL80211_RRF_NO_OFDM),
  36                 /* Channel 36 - 48 */
  37                 REG_RULE(5180-10, 5240+10, 40, 3, 20,
  38                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  39                 /* Channel 149 - 165 */
  40                 REG_RULE(5745-10, 5825+10, 40, 3, 20,
  41                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  42                 /* Channel 52 - 64 */
  43                 REG_RULE(5260-10, 5320+10, 40, 3, 30,
  44                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  45                          NL80211_RRF_DFS),
  46                 /* Channel 100 - 140 */
  47                 REG_RULE(5500-10, 5700+10, 40, 3, 30,
  48                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  49                          NL80211_RRF_DFS),
  50         }
  51 };
  52
  53 /*
  54  * This function maps the nl802.11 channel type into driver channel type.
  55  *
  56  * The mapping is as follows -
  57  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  58  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  59  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  60  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  61  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  62  */
  63 static u8
  64 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
  65                                                  channel_type)
  66 {
  67         switch (channel_type) {
  68         case NL80211_CHAN_NO_HT:
  69         case NL80211_CHAN_HT20:
  70                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  71         case NL80211_CHAN_HT40PLUS:
  72                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  73         case NL80211_CHAN_HT40MINUS:
  74                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  75         default:
  76                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  77         }
  78 }
  79
  80 /*
  81  * This function checks whether WEP is set.
  82  */
  83 static int
  84 mwifiex_is_alg_wep(u32 cipher)
  85 {
  86         switch (cipher) {
  87         case WLAN_CIPHER_SUITE_WEP40:
  88         case WLAN_CIPHER_SUITE_WEP104:
  89                 return 1;
  90         default:
  91                 break;
  92         }
  93
  94         return 0;
  95 }
  96
  97 /*
  98  * This function retrieves the private structure from kernel wiphy structure.
  99  */
 100 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
 101 {
 102         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 103 }
 104
 105 /*
 106  * CFG802.11 operation handler to delete a network key.
 107  */
 108 static int
 109 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 110                          u8 key_index, bool pairwise, const u8 *mac_addr)
 111 {
 112         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 113
 114         if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
 115                 wiphy_err(wiphy, "deleting the crypto keys\n");
 116                 return -EFAULT;
 117         }
 118
 119         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 120         return 0;
 121 }
 122
 123 /*
 124  * This function forms an skb for management frame.
 125  */
 126 static int
 127 mwifiex_form_mgmt_frame(struct sk_buff *skb, const u8 *buf, size_t len)
 128 {
 129         u8 addr[ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 130         u16 pkt_len;
 131         u32 tx_control = 0, pkt_type = PKT_TYPE_MGMT;
 132         struct timeval tv;
 133
 134         pkt_len = len + ETH_ALEN;
 135
 136         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN +
 137                     MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
 138         memcpy(skb_push(skb, sizeof(pkt_len)), &pkt_len, sizeof(pkt_len));
 139
 140         memcpy(skb_push(skb, sizeof(tx_control)),
 141                &tx_control, sizeof(tx_control));
 142
 143         memcpy(skb_push(skb, sizeof(pkt_type)), &pkt_type, sizeof(pkt_type));
 144
 145         /* Add packet data and address4 */
 146         memcpy(skb_put(skb, sizeof(struct ieee80211_hdr_3addr)), buf,
 147                sizeof(struct ieee80211_hdr_3addr));
 148         memcpy(skb_put(skb, ETH_ALEN), addr, ETH_ALEN);
 149         memcpy(skb_put(skb, len - sizeof(struct ieee80211_hdr_3addr)),
 150                buf + sizeof(struct ieee80211_hdr_3addr),
 151                len - sizeof(struct ieee80211_hdr_3addr));
 152
 153         skb->priority = LOW_PRIO_TID;
 154         do_gettimeofday(&tv);
 155         skb->tstamp = timeval_to_ktime(tv);
 156
 157         return 0;
 158 }
 159
 160 /*
 161  * CFG802.11 operation handler to transmit a management frame.
 162  */
 163 static int
 164 mwifiex_cfg80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
 165                          struct ieee80211_channel *chan, bool offchan,
 166                          enum nl80211_channel_type channel_type,
 167                          bool channel_type_valid, unsigned int wait,
 168                          const u8 *buf, size_t len, bool no_cck,
 169                          bool dont_wait_for_ack, u64 *cookie)
 170 {
 171         struct sk_buff *skb;
 172         u16 pkt_len;
 173         const struct ieee80211_mgmt *mgmt;
 174         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 175
 176         if (!buf || !len) {
 177                 wiphy_err(wiphy, "invalid buffer and length\n");
 178                 return -EFAULT;
 179         }
 180
 181         mgmt = (const struct ieee80211_mgmt *)buf;
 182         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA &&
 183             ieee80211_is_probe_resp(mgmt->frame_control)) {
 184                 /* Since we support offload probe resp, we need to skip probe
 185                  * resp in AP or GO mode */
 186                 wiphy_dbg(wiphy,
 187                           "info: skip to send probe resp in AP or GO mode\n");
 188                 return 0;
 189         }
 190
 191         pkt_len = len + ETH_ALEN;
 192         skb = dev_alloc_skb(MWIFIEX_MIN_DATA_HEADER_LEN +
 193                             MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 194                             pkt_len + sizeof(pkt_len));
 195
 196         if (!skb) {
 197                 wiphy_err(wiphy, "allocate skb failed for management frame\n");
 198                 return -ENOMEM;
 199         }
 200
 201         mwifiex_form_mgmt_frame(skb, buf, len);
 202         mwifiex_queue_tx_pkt(priv, skb);
 203
 204         *cookie = random32() | 1;
 205         cfg80211_mgmt_tx_status(dev, *cookie, buf, len, true, GFP_ATOMIC);
 206
 207         wiphy_dbg(wiphy, "info: management frame transmitted\n");
 208         return 0;
 209 }
 210
 211 /*
 212  * CFG802.11 operation handler to register a mgmt frame.
 213  */
 214 static void
 215 mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
 216                                      struct net_device *dev,
 217                                      u16 frame_type, bool reg)
 218 {
 219         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 220
 221         if (reg)
 222                 priv->mgmt_frame_mask |= BIT(frame_type >> 4);
 223         else
 224                 priv->mgmt_frame_mask &= ~BIT(frame_type >> 4);
 225
 226         mwifiex_send_cmd_async(priv, HostCmd_CMD_MGMT_FRAME_REG,
 227                                HostCmd_ACT_GEN_SET, 0, &priv->mgmt_frame_mask);
 228
 229         wiphy_dbg(wiphy, "info: mgmt frame registered\n");
 230 }
 231
 232 /*
 233  * CFG802.11 operation handler to set Tx power.
 234  */
 235 static int
 236 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 237                               enum nl80211_tx_power_setting type,
 238                               int mbm)
 239 {
 240         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 241         struct mwifiex_power_cfg power_cfg;
 242         int dbm = MBM_TO_DBM(mbm);
 243
 244         if (type == NL80211_TX_POWER_FIXED) {
 245                 power_cfg.is_power_auto = 0;
 246                 power_cfg.power_level = dbm;
 247         } else {
 248                 power_cfg.is_power_auto = 1;
 249         }
 250
 251         return mwifiex_set_tx_power(priv, &power_cfg);
 252 }
 253
 254 /*
 255  * CFG802.11 operation handler to set Power Save option.
 256  *
 257  * The timeout value, if provided, is currently ignored.
 258  */
 259 static int
 260 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 261                                 struct net_device *dev,
 262                                 bool enabled, int timeout)
 263 {
 264         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 265         u32 ps_mode;
 266
 267         if (timeout)
 268                 wiphy_dbg(wiphy,
 269                           "info: ignore timeout value for IEEE Power Save\n");
 270
 271         ps_mode = enabled;
 272
 273         return mwifiex_drv_set_power(priv, &ps_mode);
 274 }
 275
 276 /*
 277  * CFG802.11 operation handler to set the default network key.
 278  */
 279 static int
 280 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 281                                  u8 key_index, bool unicast,
 282                                  bool multicast)
 283 {
 284         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 285
 286         /* Return if WEP key not configured */
 287         if (!priv->sec_info.wep_enabled)
 288                 return 0;
 289
 290         if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
 291                 wiphy_err(wiphy, "set default Tx key index\n");
 292                 return -EFAULT;
 293         }
 294
 295         return 0;
 296 }
 297
 298 /*
 299  * CFG802.11 operation handler to add a network key.
 300  */
 301 static int
 302 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 303                          u8 key_index, bool pairwise, const u8 *mac_addr,
 304                          struct key_params *params)
 305 {
 306         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 307
 308         if (mwifiex_set_encode(priv, params->key, params->key_len,
 309                                key_index, 0)) {
 310                 wiphy_err(wiphy, "crypto keys added\n");
 311                 return -EFAULT;
 312         }
 313
 314         return 0;
 315 }
 316
 317 /*
 318  * This function sends domain information to the firmware.
 319  *
 320  * The following information are passed to the firmware -
 321  *      - Country codes
 322  *      - Sub bands (first channel, number of channels, maximum Tx power)
 323  */
 324 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 325 {
 326         u8 no_of_triplet = 0;
 327         struct ieee80211_country_ie_triplet *t;
 328         u8 no_of_parsed_chan = 0;
 329         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 330         u8 i, flag = 0;
 331         enum ieee80211_band band;
 332         struct ieee80211_supported_band *sband;
 333         struct ieee80211_channel *ch;
 334         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 335         struct mwifiex_adapter *adapter = priv->adapter;
 336         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 337
 338         /* Set country code */
 339         domain_info->country_code[0] = priv->country_code[0];
 340         domain_info->country_code[1] = priv->country_code[1];
 341         domain_info->country_code[2] = ' ';
 342
 343         band = mwifiex_band_to_radio_type(adapter->config_bands);
 344         if (!wiphy->bands[band]) {
 345                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 346                 return -1;
 347         }
 348
 349         sband = wiphy->bands[band];
 350
 351         for (i = 0; i < sband->n_channels ; i++) {
 352                 ch = &sband->channels[i];
 353                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 354                         continue;
 355
 356                 if (!flag) {
 357                         flag = 1;
 358                         first_chan = (u32) ch->hw_value;
 359                         next_chan = first_chan;
 360                         max_pwr = ch->max_power;
 361                         no_of_parsed_chan = 1;
 362                         continue;
 363                 }
 364
 365                 if (ch->hw_value == next_chan + 1 &&
 366                     ch->max_power == max_pwr) {
 367                         next_chan++;
 368                         no_of_parsed_chan++;
 369                 } else {
 370                         t = &domain_info->triplet[no_of_triplet];
 371                         t->chans.first_channel = first_chan;
 372                         t->chans.num_channels = no_of_parsed_chan;
 373                         t->chans.max_power = max_pwr;
 374                         no_of_triplet++;
 375                         first_chan = (u32) ch->hw_value;
 376                         next_chan = first_chan;
 377                         max_pwr = ch->max_power;
 378                         no_of_parsed_chan = 1;
 379                 }
 380         }
 381
 382         if (flag) {
 383                 t = &domain_info->triplet[no_of_triplet];
 384                 t->chans.first_channel = first_chan;
 385                 t->chans.num_channels = no_of_parsed_chan;
 386                 t->chans.max_power = max_pwr;
 387                 no_of_triplet++;
 388         }
 389
 390         domain_info->no_of_triplet = no_of_triplet;
 391
 392         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 393                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 394                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 395                 return -1;
 396         }
 397
 398         return 0;
 399 }
 400
 401 /*
 402  * CFG802.11 regulatory domain callback function.
 403  *
 404  * This function is called when the regulatory domain is changed due to the
 405  * following reasons -
 406  *      - Set by driver
 407  *      - Set by system core
 408  *      - Set by user
 409  *      - Set bt Country IE
 410  */
 411 static int mwifiex_reg_notifier(struct wiphy *wiphy,
 412                                 struct regulatory_request *request)
 413 {
 414         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 415
 416         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
 417                         " %c%c\n", request->alpha2[0], request->alpha2[1]);
 418
 419         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
 420
 421         switch (request->initiator) {
 422         case NL80211_REGDOM_SET_BY_DRIVER:
 423         case NL80211_REGDOM_SET_BY_CORE:
 424         case NL80211_REGDOM_SET_BY_USER:
 425                 break;
 426                 /* Todo: apply driver specific changes in channel flags based
 427                    on the request initiator if necessary. */
 428         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 429                 break;
 430         }
 431         mwifiex_send_domain_info_cmd_fw(wiphy);
 432
 433         return 0;
 434 }
 435
 436 /*
 437  * This function sets the RF channel.
 438  *
 439  * This function creates multiple IOCTL requests, populates them accordingly
 440  * and issues them to set the band/channel and frequency.
 441  */
 442 static int
 443 mwifiex_set_rf_channel(struct mwifiex_private *priv,
 444                        struct ieee80211_channel *chan,
 445                        enum nl80211_channel_type channel_type)
 446 {
 447         struct mwifiex_chan_freq_power cfp;
 448         u32 config_bands = 0;
 449         struct wiphy *wiphy = priv->wdev->wiphy;
 450         struct mwifiex_adapter *adapter = priv->adapter;
 451
 452         if (chan) {
 453                 /* Set appropriate bands */
 454                 if (chan->band == IEEE80211_BAND_2GHZ) {
 455                         if (channel_type == NL80211_CHAN_NO_HT)
 456                                 if (priv->adapter->config_bands == BAND_B ||
 457                                     priv->adapter->config_bands == BAND_G)
 458                                         config_bands =
 459                                                 priv->adapter->config_bands;
 460                                 else
 461                                         config_bands = BAND_B | BAND_G;
 462                         else
 463                                 config_bands = BAND_B | BAND_G | BAND_GN;
 464                 } else {
 465                         if (channel_type == NL80211_CHAN_NO_HT)
 466                                 config_bands = BAND_A;
 467                         else
 468                                 config_bands = BAND_AN | BAND_A;
 469                 }
 470
 471                 if (!((config_bands | adapter->fw_bands) &
 472                                                 ~adapter->fw_bands)) {
 473                         adapter->config_bands = config_bands;
 474                         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 475                                 adapter->adhoc_start_band = config_bands;
 476                                 if ((config_bands & BAND_GN) ||
 477                                     (config_bands & BAND_AN))
 478                                         adapter->adhoc_11n_enabled = true;
 479                                 else
 480                                         adapter->adhoc_11n_enabled = false;
 481                         }
 482                 }
 483                 adapter->sec_chan_offset =
 484                         mwifiex_cfg80211_channel_type_to_sec_chan_offset
 485                         (channel_type);
 486                 adapter->channel_type = channel_type;
 487         }
 488
 489         wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
 490                   config_bands, adapter->sec_chan_offset, priv->bss_mode);
 491         if (!chan)
 492                 return 0;
 493
 494         memset(&cfp, 0, sizeof(cfp));
 495         cfp.freq = chan->center_freq;
 496         cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
 497
 498         if (mwifiex_bss_set_channel(priv, &cfp))
 499                 return -EFAULT;
 500
 501         return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
 502 }
 503
 504 /*
 505  * CFG802.11 operation handler to set channel.
 506  *
 507  * This function can only be used when station is not connected.
 508  */
 509 static int
 510 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
 511                              struct ieee80211_channel *chan,
 512                              enum nl80211_channel_type channel_type)
 513 {
 514         struct mwifiex_private *priv;
 515
 516         if (dev)
 517                 priv = mwifiex_netdev_get_priv(dev);
 518         else
 519                 priv = mwifiex_cfg80211_get_priv(wiphy);
 520
 521         if (priv->media_connected) {
 522                 wiphy_err(wiphy, "This setting is valid only when station "
 523                                 "is not connected\n");
 524                 return -EINVAL;
 525         }
 526
 527         return mwifiex_set_rf_channel(priv, chan, channel_type);
 528 }
 529
 530 static int
 531 mwifiex_cfg80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
 532 {
 533         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 534         struct mwifiex_adapter *adapter = priv->adapter;
 535         struct mwifiex_ds_ant_cfg ant_cfg;
 536
 537         if (!tx_ant || !rx_ant)
 538                 return -EOPNOTSUPP;
 539
 540         if (adapter->hw_dev_mcs_support != HT_STREAM_2X2) {
 541                 /* Not a MIMO chip. User should provide specific antenna number
 542                  * for Tx/Rx path or enable all antennas for diversity
 543                  */
 544                 if (tx_ant != rx_ant)
 545                         return -EOPNOTSUPP;
 546
 547                 if ((tx_ant & (tx_ant - 1)) &&
 548                     (tx_ant != BIT(adapter->number_of_antenna) - 1))
 549                         return -EOPNOTSUPP;
 550
 551                 if ((tx_ant == BIT(adapter->number_of_antenna) - 1) &&
 552                     (priv->adapter->number_of_antenna > 1)) {
 553                         tx_ant = RF_ANTENNA_AUTO;
 554                         rx_ant = RF_ANTENNA_AUTO;
 555                 }
 556         }
 557
 558         ant_cfg.tx_ant = tx_ant;
 559         ant_cfg.rx_ant = rx_ant;
 560
 561         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_RF_ANTENNA,
 562                                      HostCmd_ACT_GEN_SET, 0, &ant_cfg);
 563 }
 564
 565 /*
 566  * This function sets the fragmentation threshold.
 567  *
 568  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 569  * and MWIFIEX_FRAG_MAX_VALUE.
 570  */
 571 static int
 572 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 573 {
 574         int ret;
 575
 576         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 577             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 578                 return -EINVAL;
 579
 580         /* Send request to firmware */
 581         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 582                                     HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 583                                     &frag_thr);
 584
 585         return ret;
 586 }
 587
 588 /*
 589  * This function sets the RTS threshold.
 590
 591  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 592  * and MWIFIEX_RTS_MAX_VALUE.
 593  */
 594 static int
 595 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 596 {
 597         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 598                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 599
 600         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 601                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 602                                     &rts_thr);
 603 }
 604
 605 /*
 606  * CFG802.11 operation handler to set wiphy parameters.
 607  *
 608  * This function can be used to set the RTS threshold and the
 609  * Fragmentation threshold of the driver.
 610  */
 611 static int
 612 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 613 {
 614         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
 615         int ret = 0;
 616
 617         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 618                 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
 619                 if (ret)
 620                         return ret;
 621         }
 622
 623         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 624                 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
 625
 626         return ret;
 627 }
 628
 629 /*
 630  * CFG802.11 operation handler to change interface type.
 631  */
 632 static int
 633 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 634                                      struct net_device *dev,
 635                                      enum nl80211_iftype type, u32 *flags,
 636                                      struct vif_params *params)
 637 {
 638         int ret;
 639         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 640
 641         if (priv->bss_mode == type) {
 642                 wiphy_warn(wiphy, "already set to required type\n");
 643                 return 0;
 644         }
 645
 646         priv->bss_mode = type;
 647
 648         switch (type) {
 649         case NL80211_IFTYPE_ADHOC:
 650                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
 651                 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
 652                 break;
 653         case NL80211_IFTYPE_STATION:
 654                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 655                 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
 656                 break;
 657         case NL80211_IFTYPE_UNSPECIFIED:
 658                 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
 659                 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
 660                 return 0;
 661         default:
 662                 wiphy_err(wiphy, "unknown interface type: %d\n", type);
 663                 return -EINVAL;
 664         }
 665
 666         mwifiex_deauthenticate(priv, NULL);
 667
 668         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 669
 670         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 671                                     HostCmd_ACT_GEN_SET, 0, NULL);
 672
 673         return ret;
 674 }
 675
 676 /*
 677  * This function dumps the station information on a buffer.
 678  *
 679  * The following information are shown -
 680  *      - Total bytes transmitted
 681  *      - Total bytes received
 682  *      - Total packets transmitted
 683  *      - Total packets received
 684  *      - Signal quality level
 685  *      - Transmission rate
 686  */
 687 static int
 688 mwifiex_dump_station_info(struct mwifiex_private *priv,
 689                           struct station_info *sinfo)
 690 {
 691         struct mwifiex_rate_cfg rate;
 692
 693         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 694                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 695                         STATION_INFO_TX_BITRATE |
 696                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 697
 698         /* Get signal information from the firmware */
 699         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 700                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 701                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 702                 return -EFAULT;
 703         }
 704
 705         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 706                 dev_err(priv->adapter->dev, "getting data rate\n");
 707                 return -EFAULT;
 708         }
 709
 710         /* Get DTIM period information from firmware */
 711         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 712                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 713                               &priv->dtim_period);
 714
 715         /*
 716          * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
 717          * MCS index values for us are 0 to 15.
 718          */
 719         if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 720                 sinfo->txrate.mcs = priv->tx_rate;
 721                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 722                 /* 40MHz rate */
 723                 if (priv->tx_htinfo & BIT(1))
 724                         sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 725                 /* SGI enabled */
 726                 if (priv->tx_htinfo & BIT(2))
 727                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 728         }
 729
 730         sinfo->signal_avg = priv->bcn_rssi_avg;
 731         sinfo->rx_bytes = priv->stats.rx_bytes;
 732         sinfo->tx_bytes = priv->stats.tx_bytes;
 733         sinfo->rx_packets = priv->stats.rx_packets;
 734         sinfo->tx_packets = priv->stats.tx_packets;
 735         sinfo->signal = priv->bcn_rssi_avg;
 736         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 737         sinfo->txrate.legacy = rate.rate * 5;
 738
 739         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 740                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 741                 sinfo->bss_param.flags = 0;
 742                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 743                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 744                         sinfo->bss_param.flags |=
 745                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 746                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 747                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 748                         sinfo->bss_param.flags |=
 749                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 750                 sinfo->bss_param.dtim_period = priv->dtim_period;
 751                 sinfo->bss_param.beacon_interval =
 752                         priv->curr_bss_params.bss_descriptor.beacon_period;
 753         }
 754
 755         return 0;
 756 }
 757
 758 /*
 759  * CFG802.11 operation handler to get station information.
 760  *
 761  * This function only works in connected mode, and dumps the
 762  * requested station information, if available.
 763  */
 764 static int
 765 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 766                              u8 *mac, struct station_info *sinfo)
 767 {
 768         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 769
 770         if (!priv->media_connected)
 771                 return -ENOENT;
 772         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 773                 return -ENOENT;
 774
 775         return mwifiex_dump_station_info(priv, sinfo);
 776 }
 777
 778 /*
 779  * CFG802.11 operation handler to dump station information.
 780  */
 781 static int
 782 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 783                               int idx, u8 *mac, struct station_info *sinfo)
 784 {
 785         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 786
 787         if (!priv->media_connected || idx)
 788                 return -ENOENT;
 789
 790         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
 791
 792         return mwifiex_dump_station_info(priv, sinfo);
 793 }
 794
 795 /* Supported rates to be advertised to the cfg80211 */
 796
 797 static struct ieee80211_rate mwifiex_rates[] = {
 798         {.bitrate = 10, .hw_value = 2, },
 799         {.bitrate = 20, .hw_value = 4, },
 800         {.bitrate = 55, .hw_value = 11, },
 801         {.bitrate = 110, .hw_value = 22, },
 802         {.bitrate = 60, .hw_value = 12, },
 803         {.bitrate = 90, .hw_value = 18, },
 804         {.bitrate = 120, .hw_value = 24, },
 805         {.bitrate = 180, .hw_value = 36, },
 806         {.bitrate = 240, .hw_value = 48, },
 807         {.bitrate = 360, .hw_value = 72, },
 808         {.bitrate = 480, .hw_value = 96, },
 809         {.bitrate = 540, .hw_value = 108, },
 810 };
 811
 812 /* Channel definitions to be advertised to cfg80211 */
 813
 814 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
 815         {.center_freq = 2412, .hw_value = 1, },
 816         {.center_freq = 2417, .hw_value = 2, },
 817         {.center_freq = 2422, .hw_value = 3, },
 818         {.center_freq = 2427, .hw_value = 4, },
 819         {.center_freq = 2432, .hw_value = 5, },
 820         {.center_freq = 2437, .hw_value = 6, },
 821         {.center_freq = 2442, .hw_value = 7, },
 822         {.center_freq = 2447, .hw_value = 8, },
 823         {.center_freq = 2452, .hw_value = 9, },
 824         {.center_freq = 2457, .hw_value = 10, },
 825         {.center_freq = 2462, .hw_value = 11, },
 826         {.center_freq = 2467, .hw_value = 12, },
 827         {.center_freq = 2472, .hw_value = 13, },
 828         {.center_freq = 2484, .hw_value = 14, },
 829 };
 830
 831 static struct ieee80211_supported_band mwifiex_band_2ghz = {
 832         .channels = mwifiex_channels_2ghz,
 833         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
 834         .bitrates = mwifiex_rates,
 835         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
 836 };
 837
 838 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
 839         {.center_freq = 5040, .hw_value = 8, },
 840         {.center_freq = 5060, .hw_value = 12, },
 841         {.center_freq = 5080, .hw_value = 16, },
 842         {.center_freq = 5170, .hw_value = 34, },
 843         {.center_freq = 5190, .hw_value = 38, },
 844         {.center_freq = 5210, .hw_value = 42, },
 845         {.center_freq = 5230, .hw_value = 46, },
 846         {.center_freq = 5180, .hw_value = 36, },
 847         {.center_freq = 5200, .hw_value = 40, },
 848         {.center_freq = 5220, .hw_value = 44, },
 849         {.center_freq = 5240, .hw_value = 48, },
 850         {.center_freq = 5260, .hw_value = 52, },
 851         {.center_freq = 5280, .hw_value = 56, },
 852         {.center_freq = 5300, .hw_value = 60, },
 853         {.center_freq = 5320, .hw_value = 64, },
 854         {.center_freq = 5500, .hw_value = 100, },
 855         {.center_freq = 5520, .hw_value = 104, },
 856         {.center_freq = 5540, .hw_value = 108, },
 857         {.center_freq = 5560, .hw_value = 112, },
 858         {.center_freq = 5580, .hw_value = 116, },
 859         {.center_freq = 5600, .hw_value = 120, },
 860         {.center_freq = 5620, .hw_value = 124, },
 861         {.center_freq = 5640, .hw_value = 128, },
 862         {.center_freq = 5660, .hw_value = 132, },
 863         {.center_freq = 5680, .hw_value = 136, },
 864         {.center_freq = 5700, .hw_value = 140, },
 865         {.center_freq = 5745, .hw_value = 149, },
 866         {.center_freq = 5765, .hw_value = 153, },
 867         {.center_freq = 5785, .hw_value = 157, },
 868         {.center_freq = 5805, .hw_value = 161, },
 869         {.center_freq = 5825, .hw_value = 165, },
 870 };
 871
 872 static struct ieee80211_supported_band mwifiex_band_5ghz = {
 873         .channels = mwifiex_channels_5ghz,
 874         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
 875         .bitrates = mwifiex_rates + 4,
 876         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
 877 };
 878
 879
 880 /* Supported crypto cipher suits to be advertised to cfg80211 */
 881
 882 static const u32 mwifiex_cipher_suites[] = {
 883         WLAN_CIPHER_SUITE_WEP40,
 884         WLAN_CIPHER_SUITE_WEP104,
 885         WLAN_CIPHER_SUITE_TKIP,
 886         WLAN_CIPHER_SUITE_CCMP,
 887 };
 888
 889 /* Supported mgmt frame types to be advertised to cfg80211 */
 890 static const struct ieee80211_txrx_stypes
 891 mwifiex_mgmt_stypes[NUM_NL80211_IFTYPES] = {
 892         [NL80211_IFTYPE_STATION] = {
 893                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 894                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
 895                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 896                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
 897         },
 898         [NL80211_IFTYPE_AP] = {
 899                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 900                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
 901                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 902                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
 903         },
 904         [NL80211_IFTYPE_P2P_CLIENT] = {
 905                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 906                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
 907                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 908                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
 909         },
 910         [NL80211_IFTYPE_P2P_GO] = {
 911                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 912                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
 913                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
 914                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
 915         },
 916 };
 917
 918 /*
 919  * CFG802.11 operation handler for setting bit rates.
 920  *
 921  * Function configures data rates to firmware using bitrate mask
 922  * provided by cfg80211.
 923  */
 924 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
 925                                 struct net_device *dev,
 926                                 const u8 *peer,
 927                                 const struct cfg80211_bitrate_mask *mask)
 928 {
 929         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 930         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 931         enum ieee80211_band band;
 932
 933         if (!priv->media_connected) {
 934                 dev_err(priv->adapter->dev,
 935                         "Can not set Tx data rate in disconnected state\n");
 936                 return -EINVAL;
 937         }
 938
 939         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 940
 941         memset(bitmap_rates, 0, sizeof(bitmap_rates));
 942
 943         /* Fill HR/DSSS rates. */
 944         if (band == IEEE80211_BAND_2GHZ)
 945                 bitmap_rates[0] = mask->control[band].legacy & 0x000f;
 946
 947         /* Fill OFDM rates */
 948         if (band == IEEE80211_BAND_2GHZ)
 949                 bitmap_rates[1] = (mask->control[band].legacy & 0x0ff0) >> 4;
 950         else
 951                 bitmap_rates[1] = mask->control[band].legacy;
 952
 953         /* Fill MCS rates */
 954         bitmap_rates[2] = mask->control[band].mcs[0];
 955         if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2)
 956                 bitmap_rates[2] |= mask->control[band].mcs[1] << 8;
 957
 958         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 959                                      HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 960 }
 961
 962 /*
 963  * CFG802.11 operation handler for connection quality monitoring.
 964  *
 965  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
 966  * events to FW.
 967  */
 968 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
 969                                                 struct net_device *dev,
 970                                                 s32 rssi_thold, u32 rssi_hyst)
 971 {
 972         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 973         struct mwifiex_ds_misc_subsc_evt subsc_evt;
 974
 975         priv->cqm_rssi_thold = rssi_thold;
 976         priv->cqm_rssi_hyst = rssi_hyst;
 977
 978         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
 979         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
 980
 981         /* Subscribe/unsubscribe low and high rssi events */
 982         if (rssi_thold && rssi_hyst) {
 983                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
 984                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
 985                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
 986                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
 987                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
 988                 return mwifiex_send_cmd_sync(priv,
 989                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 990                                              0, 0, &subsc_evt);
 991         } else {
 992                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
 993                 return mwifiex_send_cmd_sync(priv,
 994                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
 995                                              0, 0, &subsc_evt);
 996         }
 997
 998         return 0;
 999 }
1000
1001 /*
1002  * CFG802.11 operation handler for disconnection request.
1003  *
1004  * This function does not work when there is already a disconnection
1005  * procedure going on.
1006  */
1007 static int
1008 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1009                             u16 reason_code)
1010 {
1011         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1012
1013         if (mwifiex_deauthenticate(priv, NULL))
1014                 return -EFAULT;
1015
1016         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1017                 " reason code %d\n", priv->cfg_bssid, reason_code);
1018
1019         memset(priv->cfg_bssid, 0, ETH_ALEN);
1020
1021         return 0;
1022 }
1023
1024 /*
1025  * This function informs the CFG802.11 subsystem of a new IBSS.
1026  *
1027  * The following information are sent to the CFG802.11 subsystem
1028  * to register the new IBSS. If we do not register the new IBSS,
1029  * a kernel panic will result.
1030  *      - SSID
1031  *      - SSID length
1032  *      - BSSID
1033  *      - Channel
1034  */
1035 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1036 {
1037         struct ieee80211_channel *chan;
1038         struct mwifiex_bss_info bss_info;
1039         struct cfg80211_bss *bss;
1040         int ie_len;
1041         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1042         enum ieee80211_band band;
1043
1044         if (mwifiex_get_bss_info(priv, &bss_info))
1045                 return -1;
1046
1047         ie_buf[0] = WLAN_EID_SSID;
1048         ie_buf[1] = bss_info.ssid.ssid_len;
1049
1050         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1051                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1052         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1053
1054         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1055         chan = __ieee80211_get_channel(priv->wdev->wiphy,
1056                         ieee80211_channel_to_frequency(bss_info.bss_chan,
1057                                                        band));
1058
1059         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1060                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1061                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
1062         cfg80211_put_bss(bss);
1063         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1064
1065         return 0;
1066 }
1067
1068 /*
1069  * This function connects with a BSS.
1070  *
1071  * This function handles both Infra and Ad-Hoc modes. It also performs
1072  * validity checking on the provided parameters, disconnects from the
1073  * current BSS (if any), sets up the association/scan parameters,
1074  * including security settings, and performs specific SSID scan before
1075  * trying to connect.
1076  *
1077  * For Infra mode, the function returns failure if the specified SSID
1078  * is not found in scan table. However, for Ad-Hoc mode, it can create
1079  * the IBSS if it does not exist. On successful completion in either case,
1080  * the function notifies the CFG802.11 subsystem of the new BSS connection.
1081  */
1082 static int
1083 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1084                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1085                        struct cfg80211_connect_params *sme, bool privacy)
1086 {
1087         struct cfg80211_ssid req_ssid;
1088         int ret, auth_type = 0;
1089         struct cfg80211_bss *bss = NULL;
1090         u8 is_scanning_required = 0;
1091
1092         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1093
1094         req_ssid.ssid_len = ssid_len;
1095         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1096                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1097                 return -EINVAL;
1098         }
1099
1100         memcpy(req_ssid.ssid, ssid, ssid_len);
1101         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1102                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1103                 return -EINVAL;
1104         }
1105
1106         /* disconnect before try to associate */
1107         mwifiex_deauthenticate(priv, NULL);
1108
1109         if (channel)
1110                 ret = mwifiex_set_rf_channel(priv, channel,
1111                                                 priv->adapter->channel_type);
1112
1113         /* As this is new association, clear locally stored
1114          * keys and security related flags */
1115         priv->sec_info.wpa_enabled = false;
1116         priv->sec_info.wpa2_enabled = false;
1117         priv->wep_key_curr_index = 0;
1118         priv->sec_info.encryption_mode = 0;
1119         priv->sec_info.is_authtype_auto = 0;
1120         ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
1121
1122         if (mode == NL80211_IFTYPE_ADHOC) {
1123                 /* "privacy" is set only for ad-hoc mode */
1124                 if (privacy) {
1125                         /*
1126                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1127                          * the firmware can find a matching network from the
1128                          * scan. The cfg80211 does not give us the encryption
1129                          * mode at this stage so just setting it to WEP here.
1130                          */
1131                         priv->sec_info.encryption_mode =
1132                                         WLAN_CIPHER_SUITE_WEP104;
1133                         priv->sec_info.authentication_mode =
1134                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1135                 }
1136
1137                 goto done;
1138         }
1139
1140         /* Now handle infra mode. "sme" is valid for infra mode only */
1141         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1142                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1143                 priv->sec_info.is_authtype_auto = 1;
1144         } else {
1145                 auth_type = sme->auth_type;
1146         }
1147
1148         if (sme->crypto.n_ciphers_pairwise) {
1149                 priv->sec_info.encryption_mode =
1150                                                 sme->crypto.ciphers_pairwise[0];
1151                 priv->sec_info.authentication_mode = auth_type;
1152         }
1153
1154         if (sme->crypto.cipher_group) {
1155                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1156                 priv->sec_info.authentication_mode = auth_type;
1157         }
1158         if (sme->ie)
1159                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1160
1161         if (sme->key) {
1162                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1163                         dev_dbg(priv->adapter->dev,
1164                                 "info: setting wep encryption"
1165                                 " with key len %d\n", sme->key_len);
1166                         priv->wep_key_curr_index = sme->key_idx;
1167                         ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1168                                                         sme->key_idx, 0);
1169                 }
1170         }
1171 done:
1172         /*
1173          * Scan entries are valid for some time (15 sec). So we can save one
1174          * active scan time if we just try cfg80211_get_bss first. If it fails
1175          * then request scan and cfg80211_get_bss() again for final output.
1176          */
1177         while (1) {
1178                 if (is_scanning_required) {
1179                         /* Do specific SSID scanning */
1180                         if (mwifiex_request_scan(priv, &req_ssid)) {
1181                                 dev_err(priv->adapter->dev, "scan error\n");
1182                                 return -EFAULT;
1183                         }
1184                 }
1185
1186                 /* Find the BSS we want using available scan results */
1187                 if (mode == NL80211_IFTYPE_ADHOC)
1188                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1189                                                bssid, ssid, ssid_len,
1190                                                WLAN_CAPABILITY_IBSS,
1191                                                WLAN_CAPABILITY_IBSS);
1192                 else
1193                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1194                                                bssid, ssid, ssid_len,
1195                                                WLAN_CAPABILITY_ESS,
1196                                                WLAN_CAPABILITY_ESS);
1197
1198                 if (!bss) {
1199                         if (is_scanning_required) {
1200                                 dev_warn(priv->adapter->dev,
1201                                          "assoc: requested bss not found in scan results\n");
1202                                 break;
1203                         }
1204                         is_scanning_required = 1;
1205                 } else {
1206                         dev_dbg(priv->adapter->dev,
1207                                 "info: trying to associate to '%s' bssid %pM\n",
1208                                 (char *) req_ssid.ssid, bss->bssid);
1209                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1210                         break;
1211                 }
1212         }
1213
1214         ret = mwifiex_bss_start(priv, bss, &req_ssid);
1215         if (ret)
1216                 return ret;
1217
1218         if (mode == NL80211_IFTYPE_ADHOC) {
1219                 /* Inform the BSS information to kernel, otherwise
1220                  * kernel will give a panic after successful assoc */
1221                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1222                         return -EFAULT;
1223         }
1224
1225         return ret;
1226 }
1227
1228 /*
1229  * CFG802.11 operation handler for association request.
1230  *
1231  * This function does not work when the current mode is set to Ad-Hoc, or
1232  * when there is already an association procedure going on. The given BSS
1233  * information is used to associate.
1234  */
1235 static int
1236 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1237                          struct cfg80211_connect_params *sme)
1238 {
1239         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1240         int ret = 0;
1241
1242         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1243                 wiphy_err(wiphy, "received infra assoc request "
1244                                 "when station is in ibss mode\n");
1245                 goto done;
1246         }
1247
1248         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1249                   (char *) sme->ssid, sme->bssid);
1250
1251         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1252                                      priv->bss_mode, sme->channel, sme, 0);
1253 done:
1254         if (!ret) {
1255                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1256                                         NULL, 0, WLAN_STATUS_SUCCESS,
1257                                         GFP_KERNEL);
1258                 dev_dbg(priv->adapter->dev,
1259                         "info: associated to bssid %pM successfully\n",
1260                         priv->cfg_bssid);
1261         } else {
1262                 dev_dbg(priv->adapter->dev,
1263                         "info: association to bssid %pM failed\n",
1264                         priv->cfg_bssid);
1265                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1266
1267                 if (ret > 0)
1268                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1269                                                 NULL, 0, NULL, 0, ret,
1270                                                 GFP_KERNEL);
1271                 else
1272                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1273                                                 NULL, 0, NULL, 0,
1274                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1275                                                 GFP_KERNEL);
1276         }
1277
1278         return 0;
1279 }
1280
1281 /*
1282  * CFG802.11 operation handler to join an IBSS.
1283  *
1284  * This function does not work in any mode other than Ad-Hoc, or if
1285  * a join operation is already in progress.
1286  */
1287 static int
1288 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1289                            struct cfg80211_ibss_params *params)
1290 {
1291         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1292         int ret = 0;
1293
1294         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1295                 wiphy_err(wiphy, "request to join ibss received "
1296                                 "when station is not in ibss mode\n");
1297                 goto done;
1298         }
1299
1300         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1301                   (char *) params->ssid, params->bssid);
1302
1303         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1304                                      params->bssid, priv->bss_mode,
1305                                      params->channel, NULL, params->privacy);
1306 done:
1307         if (!ret) {
1308                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1309                 dev_dbg(priv->adapter->dev,
1310                         "info: joined/created adhoc network with bssid"
1311                         " %pM successfully\n", priv->cfg_bssid);
1312         } else {
1313                 dev_dbg(priv->adapter->dev,
1314                         "info: failed creating/joining adhoc network\n");
1315         }
1316
1317         return ret;
1318 }
1319
1320 /*
1321  * CFG802.11 operation handler to leave an IBSS.
1322  *
1323  * This function does not work if a leave operation is
1324  * already in progress.
1325  */
1326 static int
1327 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1328 {
1329         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1330
1331         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1332                   priv->cfg_bssid);
1333         if (mwifiex_deauthenticate(priv, NULL))
1334                 return -EFAULT;
1335
1336         memset(priv->cfg_bssid, 0, ETH_ALEN);
1337
1338         return 0;
1339 }
1340
1341 /*
1342  * CFG802.11 operation handler for scan request.
1343  *
1344  * This function issues a scan request to the firmware based upon
1345  * the user specified scan configuration. On successfull completion,
1346  * it also informs the results.
1347  */
1348 static int
1349 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1350                       struct cfg80211_scan_request *request)
1351 {
1352         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1353         int i, ret;
1354         struct ieee80211_channel *chan;
1355
1356         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1357
1358         if ((request->flags & CFG80211_SCAN_FLAG_TX_ABORT) &&
1359             atomic_read(&priv->wmm.tx_pkts_queued) >=
1360             MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
1361                 dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
1362                 return -EBUSY;
1363         }
1364
1365         if (priv->user_scan_cfg) {
1366                 dev_err(priv->adapter->dev, "cmd: Scan already in process..\n");
1367                 return -EBUSY;
1368         }
1369
1370         priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1371                                       GFP_KERNEL);
1372         if (!priv->user_scan_cfg) {
1373                 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1374                 return -ENOMEM;
1375         }
1376
1377         priv->scan_request = request;
1378
1379         priv->user_scan_cfg->num_ssids = request->n_ssids;
1380         priv->user_scan_cfg->ssid_list = request->ssids;
1381
1382         if (request->ie && request->ie_len) {
1383                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1384                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1385                                 continue;
1386                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1387                         memcpy(&priv->vs_ie[i].ie, request->ie,
1388                                request->ie_len);
1389                         break;
1390                 }
1391         }
1392
1393         for (i = 0; i < request->n_channels; i++) {
1394                 chan = request->channels[i];
1395                 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1396                 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1397
1398                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1399                         priv->user_scan_cfg->chan_list[i].scan_type =
1400                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1401                 else
1402                         priv->user_scan_cfg->chan_list[i].scan_type =
1403                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1404
1405                 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1406         }
1407
1408         ret = mwifiex_scan_networks(priv, priv->user_scan_cfg);
1409         if (ret) {
1410                 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1411                 priv->scan_request = NULL;
1412                 kfree(priv->user_scan_cfg);
1413                 priv->user_scan_cfg = NULL;
1414                 return ret;
1415         }
1416
1417         if (request->ie && request->ie_len) {
1418                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1419                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1420                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1421                                 memset(&priv->vs_ie[i].ie, 0,
1422                                        MWIFIEX_MAX_VSIE_LEN);
1423                         }
1424                 }
1425         }
1426         return 0;
1427 }
1428
1429 /*
1430  * This function sets up the CFG802.11 specific HT capability fields
1431  * with default values.
1432  *
1433  * The following default values are set -
1434  *      - HT Supported = True
1435  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1436  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1437  *      - HT Capabilities supported by firmware
1438  *      - MCS information, Rx mask = 0xff
1439  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1440  */
1441 static void
1442 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1443                       struct mwifiex_private *priv)
1444 {
1445         int rx_mcs_supp;
1446         struct ieee80211_mcs_info mcs_set;
1447         u8 *mcs = (u8 *)&mcs_set;
1448         struct mwifiex_adapter *adapter = priv->adapter;
1449
1450         ht_info->ht_supported = true;
1451         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1452         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1453
1454         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1455
1456         /* Fill HT capability information */
1457         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1458                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1459         else
1460                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1461
1462         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1463                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1464         else
1465                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1466
1467         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1468                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1469         else
1470                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1471
1472         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1473                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1474         else
1475                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1476
1477         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1478                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1479         else
1480                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1481
1482         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1483         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1484
1485         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1486         /* Set MCS for 1x1 */
1487         memset(mcs, 0xff, rx_mcs_supp);
1488         /* Clear all the other values */
1489         memset(&mcs[rx_mcs_supp], 0,
1490                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1491         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1492             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1493                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1494                 SETHT_MCS32(mcs_set.rx_mask);
1495
1496         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1497
1498         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1499 }
1500
1501 /*
1502  *  create a new virtual interface with the given name
1503  */
1504 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1505                                             char *name,
1506                                             enum nl80211_iftype type,
1507                                             u32 *flags,
1508                                             struct vif_params *params)
1509 {
1510         struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1511         struct mwifiex_adapter *adapter;
1512         struct net_device *dev;
1513         void *mdev_priv;
1514
1515         if (!priv)
1516                 return ERR_PTR(-EFAULT);
1517
1518         adapter = priv->adapter;
1519         if (!adapter)
1520                 return ERR_PTR(-EFAULT);
1521
1522         switch (type) {
1523         case NL80211_IFTYPE_UNSPECIFIED:
1524         case NL80211_IFTYPE_STATION:
1525         case NL80211_IFTYPE_ADHOC:
1526                 if (priv->bss_mode) {
1527                         wiphy_err(wiphy, "cannot create multiple"
1528                                         " station/adhoc interfaces\n");
1529                         return ERR_PTR(-EINVAL);
1530                 }
1531
1532                 if (type == NL80211_IFTYPE_UNSPECIFIED)
1533                         priv->bss_mode = NL80211_IFTYPE_STATION;
1534                 else
1535                         priv->bss_mode = type;
1536
1537                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1538                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1539                 priv->bss_priority = 0;
1540                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1541                 priv->bss_num = 0;
1542
1543                 break;
1544         default:
1545                 wiphy_err(wiphy, "type not supported\n");
1546                 return ERR_PTR(-EINVAL);
1547         }
1548
1549         dev = alloc_netdev_mqs(sizeof(struct mwifiex_private *), name,
1550                                ether_setup, IEEE80211_NUM_ACS, 1);
1551         if (!dev) {
1552                 wiphy_err(wiphy, "no memory available for netdevice\n");
1553                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1554                 return ERR_PTR(-ENOMEM);
1555         }
1556
1557         dev_net_set(dev, wiphy_net(wiphy));
1558         dev->ieee80211_ptr = priv->wdev;
1559         dev->ieee80211_ptr->iftype = priv->bss_mode;
1560         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1561         memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1562         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1563
1564         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1565         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1566         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1567
1568         mdev_priv = netdev_priv(dev);
1569         *((unsigned long *) mdev_priv) = (unsigned long) priv;
1570
1571         priv->netdev = dev;
1572         mwifiex_init_priv_params(priv, dev);
1573
1574         SET_NETDEV_DEV(dev, adapter->dev);
1575
1576         /* Register network device */
1577         if (register_netdevice(dev)) {
1578                 wiphy_err(wiphy, "cannot register virtual network device\n");
1579                 free_netdev(dev);
1580                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1581                 return ERR_PTR(-EFAULT);
1582         }
1583
1584         sema_init(&priv->async_sem, 1);
1585
1586         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1587
1588 #ifdef CONFIG_DEBUG_FS
1589         mwifiex_dev_debugfs_init(priv);
1590 #endif
1591         return dev;
1592 }
1593 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1594
1595 /*
1596  * del_virtual_intf: remove the virtual interface determined by dev
1597  */
1598 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1599 {
1600         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1601
1602 #ifdef CONFIG_DEBUG_FS
1603         mwifiex_dev_debugfs_remove(priv);
1604 #endif
1605
1606         mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
1607
1608         if (netif_carrier_ok(priv->netdev))
1609                 netif_carrier_off(priv->netdev);
1610
1611         if (dev->reg_state == NETREG_REGISTERED)
1612                 unregister_netdevice(dev);
1613
1614         /* Clear the priv in adapter */
1615         priv->netdev = NULL;
1616
1617         priv->media_connected = false;
1618
1619         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1620
1621         return 0;
1622 }
1623 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1624
1625 /* station cfg80211 operations */
1626 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1627         .add_virtual_intf = mwifiex_add_virtual_intf,
1628         .del_virtual_intf = mwifiex_del_virtual_intf,
1629         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1630         .scan = mwifiex_cfg80211_scan,
1631         .connect = mwifiex_cfg80211_connect,
1632         .disconnect = mwifiex_cfg80211_disconnect,
1633         .get_station = mwifiex_cfg80211_get_station,
1634         .dump_station = mwifiex_cfg80211_dump_station,
1635         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1636         .set_channel = mwifiex_cfg80211_set_channel,
1637         .join_ibss = mwifiex_cfg80211_join_ibss,
1638         .leave_ibss = mwifiex_cfg80211_leave_ibss,
1639         .add_key = mwifiex_cfg80211_add_key,
1640         .del_key = mwifiex_cfg80211_del_key,
1641         .mgmt_tx = mwifiex_cfg80211_mgmt_tx,
1642         .mgmt_frame_register = mwifiex_cfg80211_mgmt_frame_register,
1643         .set_default_key = mwifiex_cfg80211_set_default_key,
1644         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1645         .set_tx_power = mwifiex_cfg80211_set_tx_power,
1646         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1647         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1648         .set_antenna = mwifiex_cfg80211_set_antenna,
1649 };
1650
1651 /*
1652  * This function registers the device with CFG802.11 subsystem.
1653  *
1654  * The function creates the wireless device/wiphy, populates it with
1655  * default parameters and handler function pointers, and finally
1656  * registers the device.
1657  */
1658 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1659 {
1660         int ret;
1661         void *wdev_priv;
1662         struct wireless_dev *wdev;
1663         struct ieee80211_sta_ht_cap *ht_info;
1664         u8 *country_code;
1665
1666         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1667         if (!wdev) {
1668                 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1669                         __func__);
1670                 return -ENOMEM;
1671         }
1672         wdev->wiphy =
1673                 wiphy_new(&mwifiex_cfg80211_ops,
1674                           sizeof(struct mwifiex_private *));
1675         if (!wdev->wiphy) {
1676                 kfree(wdev);
1677                 return -ENOMEM;
1678         }
1679         wdev->iftype = NL80211_IFTYPE_STATION;
1680         wdev->wiphy->max_scan_ssids = 10;
1681         wdev->wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1682         wdev->wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
1683         wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1684                                        BIT(NL80211_IFTYPE_ADHOC);
1685
1686         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1687         ht_info = &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap;
1688         mwifiex_setup_ht_caps(ht_info, priv);
1689
1690         if (priv->adapter->config_bands & BAND_A) {
1691                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1692                 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap;
1693                 mwifiex_setup_ht_caps(ht_info, priv);
1694         } else {
1695                 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1696         }
1697
1698         /* Initialize cipher suits */
1699         wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1700         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1701
1702         memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1703         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1704
1705         wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1706
1707         wdev->wiphy->probe_resp_offload =
1708                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
1709                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
1710                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
1711
1712         wiphy_apply_custom_regulatory(wdev->wiphy,
1713                                       &mwifiex_world_regdom_custom);
1714
1715         wdev->wiphy->available_antennas_tx =
1716                 BIT(priv->adapter->number_of_antenna) - 1;
1717         wdev->wiphy->available_antennas_rx =
1718                 BIT(priv->adapter->number_of_antenna) - 1;
1719
1720         /* Reserve space for mwifiex specific private data for BSS */
1721         wdev->wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1722
1723         wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1724
1725         /* Set struct mwifiex_private pointer in wiphy_priv */
1726         wdev_priv = wiphy_priv(wdev->wiphy);
1727
1728         *(unsigned long *) wdev_priv = (unsigned long) priv;
1729
1730         set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1731
1732         ret = wiphy_register(wdev->wiphy);
1733         if (ret < 0) {
1734                 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1735                         __func__);
1736                 wiphy_free(wdev->wiphy);
1737                 kfree(wdev);
1738                 return ret;
1739         } else {
1740                 dev_dbg(priv->adapter->dev,
1741                         "info: successfully registered wiphy device\n");
1742         }
1743
1744         country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1745         if (country_code)
1746                 dev_info(priv->adapter->dev,
1747                          "ignoring F/W country code %2.2s\n", country_code);
1748
1749         priv->wdev = wdev;
1750
1751         return ret;
1752 }