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 char *reg_alpha2;
  24 module_param(reg_alpha2, charp, 0);
  25
  26 static const struct ieee80211_iface_limit mwifiex_ap_sta_limits[] = {
  27         {
  28                 .max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
  29                                    BIT(NL80211_IFTYPE_P2P_GO) |
  30                                    BIT(NL80211_IFTYPE_P2P_CLIENT),
  31         },
  32         {
  33                 .max = 1, .types = BIT(NL80211_IFTYPE_AP),
  34         },
  35 };
  36
  37 static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
  38         .limits = mwifiex_ap_sta_limits,
  39         .num_different_channels = 1,
  40         .n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
  41         .max_interfaces = MWIFIEX_MAX_BSS_NUM,
  42         .beacon_int_infra_match = true,
  43 };
  44
  45 static const struct ieee80211_regdomain mwifiex_world_regdom_custom = {
  46         .n_reg_rules = 7,
  47         .alpha2 =  "99",
  48         .reg_rules = {
  49                 /* Channel 1 - 11 */
  50                 REG_RULE(2412-10, 2462+10, 40, 3, 20, 0),
  51                 /* Channel 12 - 13 */
  52                 REG_RULE(2467-10, 2472+10, 20, 3, 20,
  53                          NL80211_RRF_NO_IR),
  54                 /* Channel 14 */
  55                 REG_RULE(2484-10, 2484+10, 20, 3, 20,
  56                          NL80211_RRF_NO_IR |
  57                          NL80211_RRF_NO_OFDM),
  58                 /* Channel 36 - 48 */
  59                 REG_RULE(5180-10, 5240+10, 40, 3, 20,
  60                          NL80211_RRF_NO_IR),
  61                 /* Channel 149 - 165 */
  62                 REG_RULE(5745-10, 5825+10, 40, 3, 20,
  63                          NL80211_RRF_NO_IR),
  64                 /* Channel 52 - 64 */
  65                 REG_RULE(5260-10, 5320+10, 40, 3, 30,
  66                          NL80211_RRF_NO_IR |
  67                          NL80211_RRF_DFS),
  68                 /* Channel 100 - 140 */
  69                 REG_RULE(5500-10, 5700+10, 40, 3, 30,
  70                          NL80211_RRF_NO_IR |
  71                          NL80211_RRF_DFS),
  72         }
  73 };
  74
  75 /*
  76  * This function maps the nl802.11 channel type into driver channel type.
  77  *
  78  * The mapping is as follows -
  79  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  80  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  81  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  82  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  83  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  84  */
  85 u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type)
  86 {
  87         switch (chan_type) {
  88         case NL80211_CHAN_NO_HT:
  89         case NL80211_CHAN_HT20:
  90                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  91         case NL80211_CHAN_HT40PLUS:
  92                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  93         case NL80211_CHAN_HT40MINUS:
  94                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  95         default:
  96                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  97         }
  98 }
  99
 100 /*
 101  * This function checks whether WEP is set.
 102  */
 103 static int
 104 mwifiex_is_alg_wep(u32 cipher)
 105 {
 106         switch (cipher) {
 107         case WLAN_CIPHER_SUITE_WEP40:
 108         case WLAN_CIPHER_SUITE_WEP104:
 109                 return 1;
 110         default:
 111                 break;
 112         }
 113
 114         return 0;
 115 }
 116
 117 /*
 118  * This function retrieves the private structure from kernel wiphy structure.
 119  */
 120 static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
 121 {
 122         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 123 }
 124
 125 /*
 126  * CFG802.11 operation handler to delete a network key.
 127  */
 128 static int
 129 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 130                          u8 key_index, bool pairwise, const u8 *mac_addr)
 131 {
 132         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 133         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 134         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 135
 136         if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index, peer_mac, 1)) {
 137                 wiphy_err(wiphy, "deleting the crypto keys\n");
 138                 return -EFAULT;
 139         }
 140
 141         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 142         return 0;
 143 }
 144
 145 /*
 146  * This function forms an skb for management frame.
 147  */
 148 static int
 149 mwifiex_form_mgmt_frame(struct sk_buff *skb, const u8 *buf, size_t len)
 150 {
 151         u8 addr[ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 152         u16 pkt_len;
 153         u32 tx_control = 0, pkt_type = PKT_TYPE_MGMT;
 154         struct timeval tv;
 155
 156         pkt_len = len + ETH_ALEN;
 157
 158         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN +
 159                     MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
 160         memcpy(skb_push(skb, sizeof(pkt_len)), &pkt_len, sizeof(pkt_len));
 161
 162         memcpy(skb_push(skb, sizeof(tx_control)),
 163                &tx_control, sizeof(tx_control));
 164
 165         memcpy(skb_push(skb, sizeof(pkt_type)), &pkt_type, sizeof(pkt_type));
 166
 167         /* Add packet data and address4 */
 168         memcpy(skb_put(skb, sizeof(struct ieee80211_hdr_3addr)), buf,
 169                sizeof(struct ieee80211_hdr_3addr));
 170         memcpy(skb_put(skb, ETH_ALEN), addr, ETH_ALEN);
 171         memcpy(skb_put(skb, len - sizeof(struct ieee80211_hdr_3addr)),
 172                buf + sizeof(struct ieee80211_hdr_3addr),
 173                len - sizeof(struct ieee80211_hdr_3addr));
 174
 175         skb->priority = LOW_PRIO_TID;
 176         do_gettimeofday(&tv);
 177         skb->tstamp = timeval_to_ktime(tv);
 178
 179         return 0;
 180 }
 181
 182 /*
 183  * CFG802.11 operation handler to transmit a management frame.
 184  */
 185 static int
 186 mwifiex_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 187                          struct cfg80211_mgmt_tx_params *params, u64 *cookie)
 188 {
 189         const u8 *buf = params->buf;
 190         size_t len = params->len;
 191         struct sk_buff *skb;
 192         u16 pkt_len;
 193         const struct ieee80211_mgmt *mgmt;
 194         struct mwifiex_txinfo *tx_info;
 195         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 196
 197         if (!buf || !len) {
 198                 wiphy_err(wiphy, "invalid buffer and length\n");
 199                 return -EFAULT;
 200         }
 201
 202         mgmt = (const struct ieee80211_mgmt *)buf;
 203         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA &&
 204             ieee80211_is_probe_resp(mgmt->frame_control)) {
 205                 /* Since we support offload probe resp, we need to skip probe
 206                  * resp in AP or GO mode */
 207                 wiphy_dbg(wiphy,
 208                           "info: skip to send probe resp in AP or GO mode\n");
 209                 return 0;
 210         }
 211
 212         pkt_len = len + ETH_ALEN;
 213         skb = dev_alloc_skb(MWIFIEX_MIN_DATA_HEADER_LEN +
 214                             MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 215                             pkt_len + sizeof(pkt_len));
 216
 217         if (!skb) {
 218                 wiphy_err(wiphy, "allocate skb failed for management frame\n");
 219                 return -ENOMEM;
 220         }
 221
 222         tx_info = MWIFIEX_SKB_TXCB(skb);
 223         tx_info->bss_num = priv->bss_num;
 224         tx_info->bss_type = priv->bss_type;
 225         tx_info->pkt_len = pkt_len;
 226
 227         mwifiex_form_mgmt_frame(skb, buf, len);
 228         mwifiex_queue_tx_pkt(priv, skb);
 229
 230         *cookie = prandom_u32() | 1;
 231         cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true, GFP_ATOMIC);
 232
 233         wiphy_dbg(wiphy, "info: management frame transmitted\n");
 234         return 0;
 235 }
 236
 237 /*
 238  * CFG802.11 operation handler to register a mgmt frame.
 239  */
 240 static void
 241 mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
 242                                      struct wireless_dev *wdev,
 243                                      u16 frame_type, bool reg)
 244 {
 245         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 246         u32 mask;
 247
 248         if (reg)
 249                 mask = priv->mgmt_frame_mask | BIT(frame_type >> 4);
 250         else
 251                 mask = priv->mgmt_frame_mask & ~BIT(frame_type >> 4);
 252
 253         if (mask != priv->mgmt_frame_mask) {
 254                 priv->mgmt_frame_mask = mask;
 255                 mwifiex_send_cmd_async(priv, HostCmd_CMD_MGMT_FRAME_REG,
 256                                        HostCmd_ACT_GEN_SET, 0,
 257                                        &priv->mgmt_frame_mask);
 258                 wiphy_dbg(wiphy, "info: mgmt frame registered\n");
 259         }
 260 }
 261
 262 /*
 263  * CFG802.11 operation handler to remain on channel.
 264  */
 265 static int
 266 mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
 267                                    struct wireless_dev *wdev,
 268                                    struct ieee80211_channel *chan,
 269                                    unsigned int duration, u64 *cookie)
 270 {
 271         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 272         int ret;
 273
 274         if (!chan || !cookie) {
 275                 wiphy_err(wiphy, "Invalid parameter for ROC\n");
 276                 return -EINVAL;
 277         }
 278
 279         if (priv->roc_cfg.cookie) {
 280                 wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llu\n",
 281                           priv->roc_cfg.cookie);
 282                 return -EBUSY;
 283         }
 284
 285         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_SET, chan,
 286                                          duration);
 287
 288         if (!ret) {
 289                 *cookie = prandom_u32() | 1;
 290                 priv->roc_cfg.cookie = *cookie;
 291                 priv->roc_cfg.chan = *chan;
 292
 293                 cfg80211_ready_on_channel(wdev, *cookie, chan,
 294                                           duration, GFP_ATOMIC);
 295
 296                 wiphy_dbg(wiphy, "info: ROC, cookie = 0x%llx\n", *cookie);
 297         }
 298
 299         return ret;
 300 }
 301
 302 /*
 303  * CFG802.11 operation handler to cancel remain on channel.
 304  */
 305 static int
 306 mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
 307                                           struct wireless_dev *wdev, u64 cookie)
 308 {
 309         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 310         int ret;
 311
 312         if (cookie != priv->roc_cfg.cookie)
 313                 return -ENOENT;
 314
 315         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_REMOVE,
 316                                          &priv->roc_cfg.chan, 0);
 317
 318         if (!ret) {
 319                 cfg80211_remain_on_channel_expired(wdev, cookie,
 320                                                    &priv->roc_cfg.chan,
 321                                                    GFP_ATOMIC);
 322
 323                 memset(&priv->roc_cfg, 0, sizeof(struct mwifiex_roc_cfg));
 324
 325                 wiphy_dbg(wiphy, "info: cancel ROC, cookie = 0x%llx\n", cookie);
 326         }
 327
 328         return ret;
 329 }
 330
 331 /*
 332  * CFG802.11 operation handler to set Tx power.
 333  */
 334 static int
 335 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 336                               struct wireless_dev *wdev,
 337                               enum nl80211_tx_power_setting type,
 338                               int mbm)
 339 {
 340         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 341         struct mwifiex_private *priv;
 342         struct mwifiex_power_cfg power_cfg;
 343         int dbm = MBM_TO_DBM(mbm);
 344
 345         if (type == NL80211_TX_POWER_FIXED) {
 346                 power_cfg.is_power_auto = 0;
 347                 power_cfg.power_level = dbm;
 348         } else {
 349                 power_cfg.is_power_auto = 1;
 350         }
 351
 352         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 353
 354         return mwifiex_set_tx_power(priv, &power_cfg);
 355 }
 356
 357 /*
 358  * CFG802.11 operation handler to set Power Save option.
 359  *
 360  * The timeout value, if provided, is currently ignored.
 361  */
 362 static int
 363 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 364                                 struct net_device *dev,
 365                                 bool enabled, int timeout)
 366 {
 367         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 368         u32 ps_mode;
 369
 370         if (timeout)
 371                 wiphy_dbg(wiphy,
 372                           "info: ignore timeout value for IEEE Power Save\n");
 373
 374         ps_mode = enabled;
 375
 376         return mwifiex_drv_set_power(priv, &ps_mode);
 377 }
 378
 379 /*
 380  * CFG802.11 operation handler to set the default network key.
 381  */
 382 static int
 383 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 384                                  u8 key_index, bool unicast,
 385                                  bool multicast)
 386 {
 387         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 388
 389         /* Return if WEP key not configured */
 390         if (!priv->sec_info.wep_enabled)
 391                 return 0;
 392
 393         if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
 394                 priv->wep_key_curr_index = key_index;
 395         } else if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index,
 396                                       NULL, 0)) {
 397                 wiphy_err(wiphy, "set default Tx key index\n");
 398                 return -EFAULT;
 399         }
 400
 401         return 0;
 402 }
 403
 404 /*
 405  * CFG802.11 operation handler to add a network key.
 406  */
 407 static int
 408 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 409                          u8 key_index, bool pairwise, const u8 *mac_addr,
 410                          struct key_params *params)
 411 {
 412         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 413         struct mwifiex_wep_key *wep_key;
 414         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 415         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 416
 417         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP &&
 418             (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 419              params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 420                 if (params->key && params->key_len) {
 421                         wep_key = &priv->wep_key[key_index];
 422                         memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 423                         memcpy(wep_key->key_material, params->key,
 424                                params->key_len);
 425                         wep_key->key_index = key_index;
 426                         wep_key->key_length = params->key_len;
 427                         priv->sec_info.wep_enabled = 1;
 428                 }
 429                 return 0;
 430         }
 431
 432         if (mwifiex_set_encode(priv, params, params->key, params->key_len,
 433                                key_index, peer_mac, 0)) {
 434                 wiphy_err(wiphy, "crypto keys added\n");
 435                 return -EFAULT;
 436         }
 437
 438         return 0;
 439 }
 440
 441 /*
 442  * This function sends domain information to the firmware.
 443  *
 444  * The following information are passed to the firmware -
 445  *      - Country codes
 446  *      - Sub bands (first channel, number of channels, maximum Tx power)
 447  */
 448 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 449 {
 450         u8 no_of_triplet = 0;
 451         struct ieee80211_country_ie_triplet *t;
 452         u8 no_of_parsed_chan = 0;
 453         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 454         u8 i, flag = 0;
 455         enum ieee80211_band band;
 456         struct ieee80211_supported_band *sband;
 457         struct ieee80211_channel *ch;
 458         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 459         struct mwifiex_private *priv;
 460         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 461
 462         /* Set country code */
 463         domain_info->country_code[0] = adapter->country_code[0];
 464         domain_info->country_code[1] = adapter->country_code[1];
 465         domain_info->country_code[2] = ' ';
 466
 467         band = mwifiex_band_to_radio_type(adapter->config_bands);
 468         if (!wiphy->bands[band]) {
 469                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 470                 return -1;
 471         }
 472
 473         sband = wiphy->bands[band];
 474
 475         for (i = 0; i < sband->n_channels ; i++) {
 476                 ch = &sband->channels[i];
 477                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 478                         continue;
 479
 480                 if (!flag) {
 481                         flag = 1;
 482                         first_chan = (u32) ch->hw_value;
 483                         next_chan = first_chan;
 484                         max_pwr = ch->max_power;
 485                         no_of_parsed_chan = 1;
 486                         continue;
 487                 }
 488
 489                 if (ch->hw_value == next_chan + 1 &&
 490                     ch->max_power == max_pwr) {
 491                         next_chan++;
 492                         no_of_parsed_chan++;
 493                 } else {
 494                         t = &domain_info->triplet[no_of_triplet];
 495                         t->chans.first_channel = first_chan;
 496                         t->chans.num_channels = no_of_parsed_chan;
 497                         t->chans.max_power = max_pwr;
 498                         no_of_triplet++;
 499                         first_chan = (u32) ch->hw_value;
 500                         next_chan = first_chan;
 501                         max_pwr = ch->max_power;
 502                         no_of_parsed_chan = 1;
 503                 }
 504         }
 505
 506         if (flag) {
 507                 t = &domain_info->triplet[no_of_triplet];
 508                 t->chans.first_channel = first_chan;
 509                 t->chans.num_channels = no_of_parsed_chan;
 510                 t->chans.max_power = max_pwr;
 511                 no_of_triplet++;
 512         }
 513
 514         domain_info->no_of_triplet = no_of_triplet;
 515
 516         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 517
 518         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 519                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 520                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 521                 return -1;
 522         }
 523
 524         return 0;
 525 }
 526
 527 /*
 528  * CFG802.11 regulatory domain callback function.
 529  *
 530  * This function is called when the regulatory domain is changed due to the
 531  * following reasons -
 532  *      - Set by driver
 533  *      - Set by system core
 534  *      - Set by user
 535  *      - Set bt Country IE
 536  */
 537 static void mwifiex_reg_notifier(struct wiphy *wiphy,
 538                                  struct regulatory_request *request)
 539 {
 540         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 541
 542         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
 543                   request->alpha2[0], request->alpha2[1]);
 544
 545         switch (request->initiator) {
 546         case NL80211_REGDOM_SET_BY_DRIVER:
 547         case NL80211_REGDOM_SET_BY_CORE:
 548         case NL80211_REGDOM_SET_BY_USER:
 549         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 550                 break;
 551         default:
 552                 wiphy_err(wiphy, "unknown regdom initiator: %d\n",
 553                           request->initiator);
 554                 return;
 555         }
 556
 557         /* Don't send world or same regdom info to firmware */
 558         if (strncmp(request->alpha2, "00", 2) &&
 559             strncmp(request->alpha2, adapter->country_code,
 560                     sizeof(request->alpha2))) {
 561                 memcpy(adapter->country_code, request->alpha2,
 562                        sizeof(request->alpha2));
 563                 mwifiex_send_domain_info_cmd_fw(wiphy);
 564         }
 565 }
 566
 567 /*
 568  * This function sets the fragmentation threshold.
 569  *
 570  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 571  * and MWIFIEX_FRAG_MAX_VALUE.
 572  */
 573 static int
 574 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 575 {
 576         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 577             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 578                 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
 579
 580         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 581                                      HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 582                                      &frag_thr);
 583 }
 584
 585 /*
 586  * This function sets the RTS threshold.
 587
 588  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 589  * and MWIFIEX_RTS_MAX_VALUE.
 590  */
 591 static int
 592 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 593 {
 594         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 595                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 596
 597         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 598                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 599                                     &rts_thr);
 600 }
 601
 602 /*
 603  * CFG802.11 operation handler to set wiphy parameters.
 604  *
 605  * This function can be used to set the RTS threshold and the
 606  * Fragmentation threshold of the driver.
 607  */
 608 static int
 609 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 610 {
 611         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 612         struct mwifiex_private *priv;
 613         struct mwifiex_uap_bss_param *bss_cfg;
 614         int ret, bss_started, i;
 615
 616         for (i = 0; i < adapter->priv_num; i++) {
 617                 priv = adapter->priv[i];
 618
 619                 switch (priv->bss_role) {
 620                 case MWIFIEX_BSS_ROLE_UAP:
 621                         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
 622                                           GFP_KERNEL);
 623                         if (!bss_cfg)
 624                                 return -ENOMEM;
 625
 626                         mwifiex_set_sys_config_invalid_data(bss_cfg);
 627
 628                         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 629                                 bss_cfg->rts_threshold = wiphy->rts_threshold;
 630                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 631                                 bss_cfg->frag_threshold = wiphy->frag_threshold;
 632                         if (changed & WIPHY_PARAM_RETRY_LONG)
 633                                 bss_cfg->retry_limit = wiphy->retry_long;
 634
 635                         bss_started = priv->bss_started;
 636
 637                         ret = mwifiex_send_cmd_sync(priv,
 638                                                     HostCmd_CMD_UAP_BSS_STOP,
 639                                                     HostCmd_ACT_GEN_SET, 0,
 640                                                     NULL);
 641                         if (ret) {
 642                                 wiphy_err(wiphy, "Failed to stop the BSS\n");
 643                                 kfree(bss_cfg);
 644                                 return ret;
 645                         }
 646
 647                         ret = mwifiex_send_cmd_async(priv,
 648                                                      HostCmd_CMD_UAP_SYS_CONFIG,
 649                                                      HostCmd_ACT_GEN_SET,
 650                                                      UAP_BSS_PARAMS_I, bss_cfg);
 651
 652                         kfree(bss_cfg);
 653
 654                         if (ret) {
 655                                 wiphy_err(wiphy, "Failed to set bss config\n");
 656                                 return ret;
 657                         }
 658
 659                         if (!bss_started)
 660                                 break;
 661
 662                         ret = mwifiex_send_cmd_async(priv,
 663                                                      HostCmd_CMD_UAP_BSS_START,
 664                                                      HostCmd_ACT_GEN_SET, 0,
 665                                                      NULL);
 666                         if (ret) {
 667                                 wiphy_err(wiphy, "Failed to start BSS\n");
 668                                 return ret;
 669                         }
 670
 671                         break;
 672                 case MWIFIEX_BSS_ROLE_STA:
 673                         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 674                                 ret = mwifiex_set_rts(priv,
 675                                                       wiphy->rts_threshold);
 676                                 if (ret)
 677                                         return ret;
 678                         }
 679                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 680                                 ret = mwifiex_set_frag(priv,
 681                                                        wiphy->frag_threshold);
 682                                 if (ret)
 683                                         return ret;
 684                         }
 685                         break;
 686                 }
 687         }
 688
 689         return 0;
 690 }
 691
 692 static int
 693 mwifiex_cfg80211_deinit_p2p(struct mwifiex_private *priv)
 694 {
 695         u16 mode = P2P_MODE_DISABLE;
 696
 697         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA)
 698                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_STA);
 699
 700         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 701                                   HostCmd_ACT_GEN_SET, 0, &mode))
 702                 return -1;
 703
 704         return 0;
 705 }
 706
 707 /*
 708  * This function initializes the functionalities for P2P client.
 709  * The P2P client initialization sequence is:
 710  * disable -> device -> client
 711  */
 712 static int
 713 mwifiex_cfg80211_init_p2p_client(struct mwifiex_private *priv)
 714 {
 715         u16 mode;
 716
 717         if (mwifiex_cfg80211_deinit_p2p(priv))
 718                 return -1;
 719
 720         mode = P2P_MODE_DEVICE;
 721         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 722                                   HostCmd_ACT_GEN_SET, 0, &mode))
 723                 return -1;
 724
 725         mode = P2P_MODE_CLIENT;
 726         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 727                                   HostCmd_ACT_GEN_SET, 0, &mode))
 728                 return -1;
 729
 730         return 0;
 731 }
 732
 733 /*
 734  * This function initializes the functionalities for P2P GO.
 735  * The P2P GO initialization sequence is:
 736  * disable -> device -> GO
 737  */
 738 static int
 739 mwifiex_cfg80211_init_p2p_go(struct mwifiex_private *priv)
 740 {
 741         u16 mode;
 742
 743         if (mwifiex_cfg80211_deinit_p2p(priv))
 744                 return -1;
 745
 746         mode = P2P_MODE_DEVICE;
 747         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 748                                   HostCmd_ACT_GEN_SET, 0, &mode))
 749                 return -1;
 750
 751         mode = P2P_MODE_GO;
 752         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 753                                   HostCmd_ACT_GEN_SET, 0, &mode))
 754                 return -1;
 755
 756         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
 757                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_UAP);
 758
 759         return 0;
 760 }
 761
 762 /*
 763  * CFG802.11 operation handler to change interface type.
 764  */
 765 static int
 766 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 767                                      struct net_device *dev,
 768                                      enum nl80211_iftype type, u32 *flags,
 769                                      struct vif_params *params)
 770 {
 771         int ret;
 772         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 773
 774         switch (dev->ieee80211_ptr->iftype) {
 775         case NL80211_IFTYPE_ADHOC:
 776                 switch (type) {
 777                 case NL80211_IFTYPE_STATION:
 778                         break;
 779                 case NL80211_IFTYPE_UNSPECIFIED:
 780                         wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
 781                 case NL80211_IFTYPE_ADHOC:      /* This shouldn't happen */
 782                         return 0;
 783                 case NL80211_IFTYPE_AP:
 784                 default:
 785                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 786                                   dev->name, type);
 787                         return -EOPNOTSUPP;
 788                 }
 789                 break;
 790         case NL80211_IFTYPE_STATION:
 791                 switch (type) {
 792                 case NL80211_IFTYPE_ADHOC:
 793                         break;
 794                 case NL80211_IFTYPE_P2P_CLIENT:
 795                         if (mwifiex_cfg80211_init_p2p_client(priv))
 796                                 return -EFAULT;
 797                         dev->ieee80211_ptr->iftype = type;
 798                         return 0;
 799                 case NL80211_IFTYPE_P2P_GO:
 800                         if (mwifiex_cfg80211_init_p2p_go(priv))
 801                                 return -EFAULT;
 802                         dev->ieee80211_ptr->iftype = type;
 803                         return 0;
 804                 case NL80211_IFTYPE_UNSPECIFIED:
 805                         wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
 806                 case NL80211_IFTYPE_STATION:    /* This shouldn't happen */
 807                         return 0;
 808                 case NL80211_IFTYPE_AP:
 809                 default:
 810                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 811                                   dev->name, type);
 812                         return -EOPNOTSUPP;
 813                 }
 814                 break;
 815         case NL80211_IFTYPE_AP:
 816                 switch (type) {
 817                 case NL80211_IFTYPE_UNSPECIFIED:
 818                         wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
 819                 case NL80211_IFTYPE_AP:         /* This shouldn't happen */
 820                         return 0;
 821                 case NL80211_IFTYPE_ADHOC:
 822                 case NL80211_IFTYPE_STATION:
 823                 default:
 824                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 825                                   dev->name, type);
 826                         return -EOPNOTSUPP;
 827                 }
 828                 break;
 829         case NL80211_IFTYPE_P2P_CLIENT:
 830         case NL80211_IFTYPE_P2P_GO:
 831                 switch (type) {
 832                 case NL80211_IFTYPE_STATION:
 833                         if (mwifiex_cfg80211_deinit_p2p(priv))
 834                                 return -EFAULT;
 835                         dev->ieee80211_ptr->iftype = type;
 836                         return 0;
 837                 default:
 838                         return -EOPNOTSUPP;
 839                 }
 840                 break;
 841         default:
 842                 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
 843                           dev->name, dev->ieee80211_ptr->iftype);
 844                 return -EOPNOTSUPP;
 845         }
 846
 847         dev->ieee80211_ptr->iftype = type;
 848         priv->bss_mode = type;
 849         mwifiex_deauthenticate(priv, NULL);
 850
 851         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 852
 853         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 854                                     HostCmd_ACT_GEN_SET, 0, NULL);
 855
 856         return ret;
 857 }
 858
 859 static void
 860 mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
 861                      struct rate_info *rate)
 862 {
 863         struct mwifiex_adapter *adapter = priv->adapter;
 864
 865         if (adapter->is_hw_11ac_capable) {
 866                 /* bit[1-0]: 00=LG 01=HT 10=VHT */
 867                 if (tx_htinfo & BIT(0)) {
 868                         /* HT */
 869                         rate->mcs = priv->tx_rate;
 870                         rate->flags |= RATE_INFO_FLAGS_MCS;
 871                 }
 872                 if (tx_htinfo & BIT(1)) {
 873                         /* VHT */
 874                         rate->mcs = priv->tx_rate & 0x0F;
 875                         rate->flags |= RATE_INFO_FLAGS_VHT_MCS;
 876                 }
 877
 878                 if (tx_htinfo & (BIT(1) | BIT(0))) {
 879                         /* HT or VHT */
 880                         switch (tx_htinfo & (BIT(3) | BIT(2))) {
 881                         case 0:
 882                                 /* This will be 20MHz */
 883                                 break;
 884                         case (BIT(2)):
 885                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 886                                 break;
 887                         case (BIT(3)):
 888                                 rate->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 889                                 break;
 890                         case (BIT(3) | BIT(2)):
 891                                 rate->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 892                                 break;
 893                         }
 894
 895                         if (tx_htinfo & BIT(4))
 896                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 897
 898                         if ((priv->tx_rate >> 4) == 1)
 899                                 rate->nss = 2;
 900                         else
 901                                 rate->nss = 1;
 902                 }
 903         } else {
 904                 /*
 905                  * Bit 0 in tx_htinfo indicates that current Tx rate
 906                  * is 11n rate. Valid MCS index values for us are 0 to 15.
 907                  */
 908                 if ((tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 909                         rate->mcs = priv->tx_rate;
 910                         rate->flags |= RATE_INFO_FLAGS_MCS;
 911                         if (tx_htinfo & BIT(1))
 912                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 913                         if (tx_htinfo & BIT(2))
 914                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 915                 }
 916         }
 917 }
 918
 919 /*
 920  * This function dumps the station information on a buffer.
 921  *
 922  * The following information are shown -
 923  *      - Total bytes transmitted
 924  *      - Total bytes received
 925  *      - Total packets transmitted
 926  *      - Total packets received
 927  *      - Signal quality level
 928  *      - Transmission rate
 929  */
 930 static int
 931 mwifiex_dump_station_info(struct mwifiex_private *priv,
 932                           struct station_info *sinfo)
 933 {
 934         u32 rate;
 935
 936         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 937                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 938                         STATION_INFO_TX_BITRATE |
 939                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 940
 941         /* Get signal information from the firmware */
 942         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 943                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 944                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 945                 return -EFAULT;
 946         }
 947
 948         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 949                 dev_err(priv->adapter->dev, "getting data rate\n");
 950                 return -EFAULT;
 951         }
 952
 953         /* Get DTIM period information from firmware */
 954         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 955                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 956                               &priv->dtim_period);
 957
 958         mwifiex_parse_htinfo(priv, priv->tx_htinfo, &sinfo->txrate);
 959
 960         sinfo->signal_avg = priv->bcn_rssi_avg;
 961         sinfo->rx_bytes = priv->stats.rx_bytes;
 962         sinfo->tx_bytes = priv->stats.tx_bytes;
 963         sinfo->rx_packets = priv->stats.rx_packets;
 964         sinfo->tx_packets = priv->stats.tx_packets;
 965         sinfo->signal = priv->bcn_rssi_avg;
 966         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 967         sinfo->txrate.legacy = rate * 5;
 968
 969         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 970                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 971                 sinfo->bss_param.flags = 0;
 972                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 973                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 974                         sinfo->bss_param.flags |=
 975                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 976                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 977                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 978                         sinfo->bss_param.flags |=
 979                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 980                 sinfo->bss_param.dtim_period = priv->dtim_period;
 981                 sinfo->bss_param.beacon_interval =
 982                         priv->curr_bss_params.bss_descriptor.beacon_period;
 983         }
 984
 985         return 0;
 986 }
 987
 988 /*
 989  * CFG802.11 operation handler to get station information.
 990  *
 991  * This function only works in connected mode, and dumps the
 992  * requested station information, if available.
 993  */
 994 static int
 995 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 996                              u8 *mac, struct station_info *sinfo)
 997 {
 998         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 999
1000         if (!priv->media_connected)
1001                 return -ENOENT;
1002         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
1003                 return -ENOENT;
1004
1005         return mwifiex_dump_station_info(priv, sinfo);
1006 }
1007
1008 /*
1009  * CFG802.11 operation handler to dump station information.
1010  */
1011 static int
1012 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
1013                               int idx, u8 *mac, struct station_info *sinfo)
1014 {
1015         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1016
1017         if (!priv->media_connected || idx)
1018                 return -ENOENT;
1019
1020         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
1021
1022         return mwifiex_dump_station_info(priv, sinfo);
1023 }
1024
1025 /* Supported rates to be advertised to the cfg80211 */
1026 static struct ieee80211_rate mwifiex_rates[] = {
1027         {.bitrate = 10, .hw_value = 2, },
1028         {.bitrate = 20, .hw_value = 4, },
1029         {.bitrate = 55, .hw_value = 11, },
1030         {.bitrate = 110, .hw_value = 22, },
1031         {.bitrate = 60, .hw_value = 12, },
1032         {.bitrate = 90, .hw_value = 18, },
1033         {.bitrate = 120, .hw_value = 24, },
1034         {.bitrate = 180, .hw_value = 36, },
1035         {.bitrate = 240, .hw_value = 48, },
1036         {.bitrate = 360, .hw_value = 72, },
1037         {.bitrate = 480, .hw_value = 96, },
1038         {.bitrate = 540, .hw_value = 108, },
1039 };
1040
1041 /* Channel definitions to be advertised to cfg80211 */
1042 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
1043         {.center_freq = 2412, .hw_value = 1, },
1044         {.center_freq = 2417, .hw_value = 2, },
1045         {.center_freq = 2422, .hw_value = 3, },
1046         {.center_freq = 2427, .hw_value = 4, },
1047         {.center_freq = 2432, .hw_value = 5, },
1048         {.center_freq = 2437, .hw_value = 6, },
1049         {.center_freq = 2442, .hw_value = 7, },
1050         {.center_freq = 2447, .hw_value = 8, },
1051         {.center_freq = 2452, .hw_value = 9, },
1052         {.center_freq = 2457, .hw_value = 10, },
1053         {.center_freq = 2462, .hw_value = 11, },
1054         {.center_freq = 2467, .hw_value = 12, },
1055         {.center_freq = 2472, .hw_value = 13, },
1056         {.center_freq = 2484, .hw_value = 14, },
1057 };
1058
1059 static struct ieee80211_supported_band mwifiex_band_2ghz = {
1060         .channels = mwifiex_channels_2ghz,
1061         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
1062         .bitrates = mwifiex_rates,
1063         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
1064 };
1065
1066 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
1067         {.center_freq = 5040, .hw_value = 8, },
1068         {.center_freq = 5060, .hw_value = 12, },
1069         {.center_freq = 5080, .hw_value = 16, },
1070         {.center_freq = 5170, .hw_value = 34, },
1071         {.center_freq = 5190, .hw_value = 38, },
1072         {.center_freq = 5210, .hw_value = 42, },
1073         {.center_freq = 5230, .hw_value = 46, },
1074         {.center_freq = 5180, .hw_value = 36, },
1075         {.center_freq = 5200, .hw_value = 40, },
1076         {.center_freq = 5220, .hw_value = 44, },
1077         {.center_freq = 5240, .hw_value = 48, },
1078         {.center_freq = 5260, .hw_value = 52, },
1079         {.center_freq = 5280, .hw_value = 56, },
1080         {.center_freq = 5300, .hw_value = 60, },
1081         {.center_freq = 5320, .hw_value = 64, },
1082         {.center_freq = 5500, .hw_value = 100, },
1083         {.center_freq = 5520, .hw_value = 104, },
1084         {.center_freq = 5540, .hw_value = 108, },
1085         {.center_freq = 5560, .hw_value = 112, },
1086         {.center_freq = 5580, .hw_value = 116, },
1087         {.center_freq = 5600, .hw_value = 120, },
1088         {.center_freq = 5620, .hw_value = 124, },
1089         {.center_freq = 5640, .hw_value = 128, },
1090         {.center_freq = 5660, .hw_value = 132, },
1091         {.center_freq = 5680, .hw_value = 136, },
1092         {.center_freq = 5700, .hw_value = 140, },
1093         {.center_freq = 5745, .hw_value = 149, },
1094         {.center_freq = 5765, .hw_value = 153, },
1095         {.center_freq = 5785, .hw_value = 157, },
1096         {.center_freq = 5805, .hw_value = 161, },
1097         {.center_freq = 5825, .hw_value = 165, },
1098 };
1099
1100 static struct ieee80211_supported_band mwifiex_band_5ghz = {
1101         .channels = mwifiex_channels_5ghz,
1102         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
1103         .bitrates = mwifiex_rates + 4,
1104         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
1105 };
1106
1107
1108 /* Supported crypto cipher suits to be advertised to cfg80211 */
1109 static const u32 mwifiex_cipher_suites[] = {
1110         WLAN_CIPHER_SUITE_WEP40,
1111         WLAN_CIPHER_SUITE_WEP104,
1112         WLAN_CIPHER_SUITE_TKIP,
1113         WLAN_CIPHER_SUITE_CCMP,
1114         WLAN_CIPHER_SUITE_AES_CMAC,
1115 };
1116
1117 /* Supported mgmt frame types to be advertised to cfg80211 */
1118 static const struct ieee80211_txrx_stypes
1119 mwifiex_mgmt_stypes[NUM_NL80211_IFTYPES] = {
1120         [NL80211_IFTYPE_STATION] = {
1121                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1122                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1123                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1124                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1125         },
1126         [NL80211_IFTYPE_AP] = {
1127                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1128                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1129                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1130                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1131         },
1132         [NL80211_IFTYPE_P2P_CLIENT] = {
1133                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1134                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1135                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1136                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1137         },
1138         [NL80211_IFTYPE_P2P_GO] = {
1139                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1140                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1141                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1142                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1143         },
1144 };
1145
1146 /*
1147  * CFG802.11 operation handler for setting bit rates.
1148  *
1149  * Function configures data rates to firmware using bitrate mask
1150  * provided by cfg80211.
1151  */
1152 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
1153                                 struct net_device *dev,
1154                                 const u8 *peer,
1155                                 const struct cfg80211_bitrate_mask *mask)
1156 {
1157         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1158         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
1159         enum ieee80211_band band;
1160
1161         if (!priv->media_connected) {
1162                 dev_err(priv->adapter->dev,
1163                         "Can not set Tx data rate in disconnected state\n");
1164                 return -EINVAL;
1165         }
1166
1167         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1168
1169         memset(bitmap_rates, 0, sizeof(bitmap_rates));
1170
1171         /* Fill HR/DSSS rates. */
1172         if (band == IEEE80211_BAND_2GHZ)
1173                 bitmap_rates[0] = mask->control[band].legacy & 0x000f;
1174
1175         /* Fill OFDM rates */
1176         if (band == IEEE80211_BAND_2GHZ)
1177                 bitmap_rates[1] = (mask->control[band].legacy & 0x0ff0) >> 4;
1178         else
1179                 bitmap_rates[1] = mask->control[band].legacy;
1180
1181         /* Fill HT MCS rates */
1182         bitmap_rates[2] = mask->control[band].ht_mcs[0];
1183         if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2)
1184                 bitmap_rates[2] |= mask->control[band].ht_mcs[1] << 8;
1185
1186         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
1187                                      HostCmd_ACT_GEN_SET, 0, bitmap_rates);
1188 }
1189
1190 /*
1191  * CFG802.11 operation handler for connection quality monitoring.
1192  *
1193  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
1194  * events to FW.
1195  */
1196 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
1197                                                 struct net_device *dev,
1198                                                 s32 rssi_thold, u32 rssi_hyst)
1199 {
1200         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1201         struct mwifiex_ds_misc_subsc_evt subsc_evt;
1202
1203         priv->cqm_rssi_thold = rssi_thold;
1204         priv->cqm_rssi_hyst = rssi_hyst;
1205
1206         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
1207         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
1208
1209         /* Subscribe/unsubscribe low and high rssi events */
1210         if (rssi_thold && rssi_hyst) {
1211                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
1212                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
1213                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
1214                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
1215                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
1216                 return mwifiex_send_cmd_sync(priv,
1217                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1218                                              0, 0, &subsc_evt);
1219         } else {
1220                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
1221                 return mwifiex_send_cmd_sync(priv,
1222                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1223                                              0, 0, &subsc_evt);
1224         }
1225
1226         return 0;
1227 }
1228
1229 /* cfg80211 operation handler for change_beacon.
1230  * Function retrieves and sets modified management IEs to FW.
1231  */
1232 static int mwifiex_cfg80211_change_beacon(struct wiphy *wiphy,
1233                                           struct net_device *dev,
1234                                           struct cfg80211_beacon_data *data)
1235 {
1236         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1237
1238         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) {
1239                 wiphy_err(wiphy, "%s: bss_type mismatched\n", __func__);
1240                 return -EINVAL;
1241         }
1242
1243         if (!priv->bss_started) {
1244                 wiphy_err(wiphy, "%s: bss not started\n", __func__);
1245                 return -EINVAL;
1246         }
1247
1248         if (mwifiex_set_mgmt_ies(priv, data)) {
1249                 wiphy_err(wiphy, "%s: setting mgmt ies failed\n", __func__);
1250                 return -EFAULT;
1251         }
1252
1253         return 0;
1254 }
1255
1256 /* cfg80211 operation handler for del_station.
1257  * Function deauthenticates station which value is provided in mac parameter.
1258  * If mac is NULL/broadcast, all stations in associated station list are
1259  * deauthenticated. If bss is not started or there are no stations in
1260  * associated stations list, no action is taken.
1261  */
1262 static int
1263 mwifiex_cfg80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1264                              u8 *mac)
1265 {
1266         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1267         struct mwifiex_sta_node *sta_node;
1268         unsigned long flags;
1269
1270         if (list_empty(&priv->sta_list) || !priv->bss_started)
1271                 return 0;
1272
1273         if (!mac || is_broadcast_ether_addr(mac)) {
1274                 wiphy_dbg(wiphy, "%s: NULL/broadcast mac address\n", __func__);
1275                 list_for_each_entry(sta_node, &priv->sta_list, list) {
1276                         if (mwifiex_send_cmd_sync(priv,
1277                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1278                                                   HostCmd_ACT_GEN_SET, 0,
1279                                                   sta_node->mac_addr))
1280                                 return -1;
1281                         mwifiex_uap_del_sta_data(priv, sta_node);
1282                 }
1283         } else {
1284                 wiphy_dbg(wiphy, "%s: mac address %pM\n", __func__, mac);
1285                 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1286                 sta_node = mwifiex_get_sta_entry(priv, mac);
1287                 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1288                 if (sta_node) {
1289                         if (mwifiex_send_cmd_sync(priv,
1290                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1291                                                   HostCmd_ACT_GEN_SET, 0,
1292                                                   sta_node->mac_addr))
1293                                 return -1;
1294                         mwifiex_uap_del_sta_data(priv, sta_node);
1295                 }
1296         }
1297
1298         return 0;
1299 }
1300
1301 static int
1302 mwifiex_cfg80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1303 {
1304         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1305         struct mwifiex_private *priv = mwifiex_get_priv(adapter,
1306                                                         MWIFIEX_BSS_ROLE_ANY);
1307         struct mwifiex_ds_ant_cfg ant_cfg;
1308
1309         if (!tx_ant || !rx_ant)
1310                 return -EOPNOTSUPP;
1311
1312         if (adapter->hw_dev_mcs_support != HT_STREAM_2X2) {
1313                 /* Not a MIMO chip. User should provide specific antenna number
1314                  * for Tx/Rx path or enable all antennas for diversity
1315                  */
1316                 if (tx_ant != rx_ant)
1317                         return -EOPNOTSUPP;
1318
1319                 if ((tx_ant & (tx_ant - 1)) &&
1320                     (tx_ant != BIT(adapter->number_of_antenna) - 1))
1321                         return -EOPNOTSUPP;
1322
1323                 if ((tx_ant == BIT(adapter->number_of_antenna) - 1) &&
1324                     (priv->adapter->number_of_antenna > 1)) {
1325                         tx_ant = RF_ANTENNA_AUTO;
1326                         rx_ant = RF_ANTENNA_AUTO;
1327                 }
1328         }
1329
1330         ant_cfg.tx_ant = tx_ant;
1331         ant_cfg.rx_ant = rx_ant;
1332
1333         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_RF_ANTENNA,
1334                                      HostCmd_ACT_GEN_SET, 0, &ant_cfg);
1335 }
1336
1337 /* cfg80211 operation handler for stop ap.
1338  * Function stops BSS running at uAP interface.
1339  */
1340 static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1341 {
1342         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1343
1344         if (mwifiex_del_mgmt_ies(priv))
1345                 wiphy_err(wiphy, "Failed to delete mgmt IEs!\n");
1346
1347         priv->ap_11n_enabled = 0;
1348
1349         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1350                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1351                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1352                 return -1;
1353         }
1354
1355         return 0;
1356 }
1357
1358 /* cfg80211 operation handler for start_ap.
1359  * Function sets beacon period, DTIM period, SSID and security into
1360  * AP config structure.
1361  * AP is configured with these settings and BSS is started.
1362  */
1363 static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
1364                                      struct net_device *dev,
1365                                      struct cfg80211_ap_settings *params)
1366 {
1367         struct mwifiex_uap_bss_param *bss_cfg;
1368         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1369         u8 config_bands = 0;
1370
1371         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
1372                 return -1;
1373         if (mwifiex_set_mgmt_ies(priv, &params->beacon))
1374                 return -1;
1375
1376         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
1377         if (!bss_cfg)
1378                 return -ENOMEM;
1379
1380         mwifiex_set_sys_config_invalid_data(bss_cfg);
1381
1382         if (params->beacon_interval)
1383                 bss_cfg->beacon_period = params->beacon_interval;
1384         if (params->dtim_period)
1385                 bss_cfg->dtim_period = params->dtim_period;
1386
1387         if (params->ssid && params->ssid_len) {
1388                 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
1389                 bss_cfg->ssid.ssid_len = params->ssid_len;
1390         }
1391
1392         switch (params->hidden_ssid) {
1393         case NL80211_HIDDEN_SSID_NOT_IN_USE:
1394                 bss_cfg->bcast_ssid_ctl = 1;
1395                 break;
1396         case NL80211_HIDDEN_SSID_ZERO_LEN:
1397                 bss_cfg->bcast_ssid_ctl = 0;
1398                 break;
1399         case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
1400                 /* firmware doesn't support this type of hidden SSID */
1401         default:
1402                 kfree(bss_cfg);
1403                 return -EINVAL;
1404         }
1405
1406         bss_cfg->channel = ieee80211_frequency_to_channel(
1407                                 params->chandef.chan->center_freq);
1408
1409         /* Set appropriate bands */
1410         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1411                 bss_cfg->band_cfg = BAND_CONFIG_BG;
1412                 config_bands = BAND_B | BAND_G;
1413
1414                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1415                         config_bands |= BAND_GN;
1416
1417                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1418                         config_bands |= BAND_GAC;
1419         } else {
1420                 bss_cfg->band_cfg = BAND_CONFIG_A;
1421                 config_bands = BAND_A;
1422
1423                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1424                         config_bands |= BAND_AN;
1425
1426                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1427                         config_bands |= BAND_AAC;
1428         }
1429
1430         if (!((config_bands | priv->adapter->fw_bands) &
1431               ~priv->adapter->fw_bands))
1432                 priv->adapter->config_bands = config_bands;
1433
1434         mwifiex_set_uap_rates(bss_cfg, params);
1435         mwifiex_send_domain_info_cmd_fw(wiphy);
1436
1437         if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
1438                 kfree(bss_cfg);
1439                 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
1440                 return -1;
1441         }
1442
1443         mwifiex_set_ht_params(priv, bss_cfg, params);
1444
1445         if (priv->adapter->is_hw_11ac_capable) {
1446                 mwifiex_set_vht_params(priv, bss_cfg, params);
1447                 mwifiex_set_vht_width(priv, params->chandef.width,
1448                                       priv->ap_11ac_enabled);
1449         }
1450
1451         if (priv->ap_11ac_enabled)
1452                 mwifiex_set_11ac_ba_params(priv);
1453         else
1454                 mwifiex_set_ba_params(priv);
1455
1456         mwifiex_set_wmm_params(priv, bss_cfg, params);
1457
1458         if (params->inactivity_timeout > 0) {
1459                 /* sta_ao_timer/ps_sta_ao_timer is in unit of 100ms */
1460                 bss_cfg->sta_ao_timer = 10 * params->inactivity_timeout;
1461                 bss_cfg->ps_sta_ao_timer = 10 * params->inactivity_timeout;
1462         }
1463
1464         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1465                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1466                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1467                 kfree(bss_cfg);
1468                 return -1;
1469         }
1470
1471         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
1472                                    HostCmd_ACT_GEN_SET,
1473                                    UAP_BSS_PARAMS_I, bss_cfg)) {
1474                 wiphy_err(wiphy, "Failed to set the SSID\n");
1475                 kfree(bss_cfg);
1476                 return -1;
1477         }
1478
1479         kfree(bss_cfg);
1480
1481         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
1482                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
1483                 wiphy_err(wiphy, "Failed to start the BSS\n");
1484                 return -1;
1485         }
1486
1487         if (priv->sec_info.wep_enabled)
1488                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1489         else
1490                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1491
1492         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1493                                   HostCmd_ACT_GEN_SET, 0,
1494                                   &priv->curr_pkt_filter))
1495                 return -1;
1496
1497         return 0;
1498 }
1499
1500 /*
1501  * CFG802.11 operation handler for disconnection request.
1502  *
1503  * This function does not work when there is already a disconnection
1504  * procedure going on.
1505  */
1506 static int
1507 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1508                             u16 reason_code)
1509 {
1510         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1511
1512         if (mwifiex_deauthenticate(priv, NULL))
1513                 return -EFAULT;
1514
1515         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1516                 " reason code %d\n", priv->cfg_bssid, reason_code);
1517
1518         memset(priv->cfg_bssid, 0, ETH_ALEN);
1519         priv->hs2_enabled = false;
1520
1521         return 0;
1522 }
1523
1524 /*
1525  * This function informs the CFG802.11 subsystem of a new IBSS.
1526  *
1527  * The following information are sent to the CFG802.11 subsystem
1528  * to register the new IBSS. If we do not register the new IBSS,
1529  * a kernel panic will result.
1530  *      - SSID
1531  *      - SSID length
1532  *      - BSSID
1533  *      - Channel
1534  */
1535 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1536 {
1537         struct ieee80211_channel *chan;
1538         struct mwifiex_bss_info bss_info;
1539         struct cfg80211_bss *bss;
1540         int ie_len;
1541         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1542         enum ieee80211_band band;
1543
1544         if (mwifiex_get_bss_info(priv, &bss_info))
1545                 return -1;
1546
1547         ie_buf[0] = WLAN_EID_SSID;
1548         ie_buf[1] = bss_info.ssid.ssid_len;
1549
1550         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1551                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1552         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1553
1554         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1555         chan = __ieee80211_get_channel(priv->wdev->wiphy,
1556                         ieee80211_channel_to_frequency(bss_info.bss_chan,
1557                                                        band));
1558
1559         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1560                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1561                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
1562         cfg80211_put_bss(priv->wdev->wiphy, bss);
1563         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1564
1565         return 0;
1566 }
1567
1568 /*
1569  * This function connects with a BSS.
1570  *
1571  * This function handles both Infra and Ad-Hoc modes. It also performs
1572  * validity checking on the provided parameters, disconnects from the
1573  * current BSS (if any), sets up the association/scan parameters,
1574  * including security settings, and performs specific SSID scan before
1575  * trying to connect.
1576  *
1577  * For Infra mode, the function returns failure if the specified SSID
1578  * is not found in scan table. However, for Ad-Hoc mode, it can create
1579  * the IBSS if it does not exist. On successful completion in either case,
1580  * the function notifies the CFG802.11 subsystem of the new BSS connection.
1581  */
1582 static int
1583 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1584                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1585                        struct cfg80211_connect_params *sme, bool privacy)
1586 {
1587         struct cfg80211_ssid req_ssid;
1588         int ret, auth_type = 0;
1589         struct cfg80211_bss *bss = NULL;
1590         u8 is_scanning_required = 0;
1591
1592         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1593
1594         req_ssid.ssid_len = ssid_len;
1595         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1596                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1597                 return -EINVAL;
1598         }
1599
1600         memcpy(req_ssid.ssid, ssid, ssid_len);
1601         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1602                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1603                 return -EINVAL;
1604         }
1605
1606         /* disconnect before try to associate */
1607         mwifiex_deauthenticate(priv, NULL);
1608
1609         /* As this is new association, clear locally stored
1610          * keys and security related flags */
1611         priv->sec_info.wpa_enabled = false;
1612         priv->sec_info.wpa2_enabled = false;
1613         priv->wep_key_curr_index = 0;
1614         priv->sec_info.encryption_mode = 0;
1615         priv->sec_info.is_authtype_auto = 0;
1616         ret = mwifiex_set_encode(priv, NULL, NULL, 0, 0, NULL, 1);
1617
1618         if (mode == NL80211_IFTYPE_ADHOC) {
1619                 /* "privacy" is set only for ad-hoc mode */
1620                 if (privacy) {
1621                         /*
1622                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1623                          * the firmware can find a matching network from the
1624                          * scan. The cfg80211 does not give us the encryption
1625                          * mode at this stage so just setting it to WEP here.
1626                          */
1627                         priv->sec_info.encryption_mode =
1628                                         WLAN_CIPHER_SUITE_WEP104;
1629                         priv->sec_info.authentication_mode =
1630                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1631                 }
1632
1633                 goto done;
1634         }
1635
1636         /* Now handle infra mode. "sme" is valid for infra mode only */
1637         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1638                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1639                 priv->sec_info.is_authtype_auto = 1;
1640         } else {
1641                 auth_type = sme->auth_type;
1642         }
1643
1644         if (sme->crypto.n_ciphers_pairwise) {
1645                 priv->sec_info.encryption_mode =
1646                                                 sme->crypto.ciphers_pairwise[0];
1647                 priv->sec_info.authentication_mode = auth_type;
1648         }
1649
1650         if (sme->crypto.cipher_group) {
1651                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1652                 priv->sec_info.authentication_mode = auth_type;
1653         }
1654         if (sme->ie)
1655                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1656
1657         if (sme->key) {
1658                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1659                         dev_dbg(priv->adapter->dev,
1660                                 "info: setting wep encryption"
1661                                 " with key len %d\n", sme->key_len);
1662                         priv->wep_key_curr_index = sme->key_idx;
1663                         ret = mwifiex_set_encode(priv, NULL, sme->key,
1664                                                  sme->key_len, sme->key_idx,
1665                                                  NULL, 0);
1666                 }
1667         }
1668 done:
1669         /*
1670          * Scan entries are valid for some time (15 sec). So we can save one
1671          * active scan time if we just try cfg80211_get_bss first. If it fails
1672          * then request scan and cfg80211_get_bss() again for final output.
1673          */
1674         while (1) {
1675                 if (is_scanning_required) {
1676                         /* Do specific SSID scanning */
1677                         if (mwifiex_request_scan(priv, &req_ssid)) {
1678                                 dev_err(priv->adapter->dev, "scan error\n");
1679                                 return -EFAULT;
1680                         }
1681                 }
1682
1683                 /* Find the BSS we want using available scan results */
1684                 if (mode == NL80211_IFTYPE_ADHOC)
1685                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1686                                                bssid, ssid, ssid_len,
1687                                                WLAN_CAPABILITY_IBSS,
1688                                                WLAN_CAPABILITY_IBSS);
1689                 else
1690                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1691                                                bssid, ssid, ssid_len,
1692                                                WLAN_CAPABILITY_ESS,
1693                                                WLAN_CAPABILITY_ESS);
1694
1695                 if (!bss) {
1696                         if (is_scanning_required) {
1697                                 dev_warn(priv->adapter->dev,
1698                                          "assoc: requested bss not found in scan results\n");
1699                                 break;
1700                         }
1701                         is_scanning_required = 1;
1702                 } else {
1703                         dev_dbg(priv->adapter->dev,
1704                                 "info: trying to associate to '%s' bssid %pM\n",
1705                                 (char *) req_ssid.ssid, bss->bssid);
1706                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1707                         break;
1708                 }
1709         }
1710
1711         ret = mwifiex_bss_start(priv, bss, &req_ssid);
1712         if (ret)
1713                 return ret;
1714
1715         if (mode == NL80211_IFTYPE_ADHOC) {
1716                 /* Inform the BSS information to kernel, otherwise
1717                  * kernel will give a panic after successful assoc */
1718                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1719                         return -EFAULT;
1720         }
1721
1722         return ret;
1723 }
1724
1725 /*
1726  * CFG802.11 operation handler for association request.
1727  *
1728  * This function does not work when the current mode is set to Ad-Hoc, or
1729  * when there is already an association procedure going on. The given BSS
1730  * information is used to associate.
1731  */
1732 static int
1733 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1734                          struct cfg80211_connect_params *sme)
1735 {
1736         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1737         int ret;
1738
1739         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA) {
1740                 wiphy_err(wiphy,
1741                           "%s: reject infra assoc request in non-STA role\n",
1742                           dev->name);
1743                 return -EINVAL;
1744         }
1745
1746         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1747                   (char *) sme->ssid, sme->bssid);
1748
1749         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1750                                      priv->bss_mode, sme->channel, sme, 0);
1751         if (!ret) {
1752                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1753                                         NULL, 0, WLAN_STATUS_SUCCESS,
1754                                         GFP_KERNEL);
1755                 dev_dbg(priv->adapter->dev,
1756                         "info: associated to bssid %pM successfully\n",
1757                         priv->cfg_bssid);
1758         } else {
1759                 dev_dbg(priv->adapter->dev,
1760                         "info: association to bssid %pM failed\n",
1761                         priv->cfg_bssid);
1762                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1763
1764                 if (ret > 0)
1765                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1766                                                 NULL, 0, NULL, 0, ret,
1767                                                 GFP_KERNEL);
1768                 else
1769                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1770                                                 NULL, 0, NULL, 0,
1771                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1772                                                 GFP_KERNEL);
1773         }
1774
1775         return 0;
1776 }
1777
1778 /*
1779  * This function sets following parameters for ibss network.
1780  *  -  channel
1781  *  -  start band
1782  *  -  11n flag
1783  *  -  secondary channel offset
1784  */
1785 static int mwifiex_set_ibss_params(struct mwifiex_private *priv,
1786                                    struct cfg80211_ibss_params *params)
1787 {
1788         struct wiphy *wiphy = priv->wdev->wiphy;
1789         struct mwifiex_adapter *adapter = priv->adapter;
1790         int index = 0, i;
1791         u8 config_bands = 0;
1792
1793         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1794                 if (!params->basic_rates) {
1795                         config_bands = BAND_B | BAND_G;
1796                 } else {
1797                         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
1798                                 /*
1799                                  * Rates below 6 Mbps in the table are CCK
1800                                  * rates; 802.11b and from 6 they are OFDM;
1801                                  * 802.11G
1802                                  */
1803                                 if (mwifiex_rates[i].bitrate == 60) {
1804                                         index = 1 << i;
1805                                         break;
1806                                 }
1807                         }
1808
1809                         if (params->basic_rates < index) {
1810                                 config_bands = BAND_B;
1811                         } else {
1812                                 config_bands = BAND_G;
1813                                 if (params->basic_rates % index)
1814                                         config_bands |= BAND_B;
1815                         }
1816                 }
1817
1818                 if (cfg80211_get_chandef_type(&params->chandef) !=
1819                                                 NL80211_CHAN_NO_HT)
1820                         config_bands |= BAND_G | BAND_GN;
1821         } else {
1822                 if (cfg80211_get_chandef_type(&params->chandef) ==
1823                                                 NL80211_CHAN_NO_HT)
1824                         config_bands = BAND_A;
1825                 else
1826                         config_bands = BAND_AN | BAND_A;
1827         }
1828
1829         if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands)) {
1830                 adapter->config_bands = config_bands;
1831                 adapter->adhoc_start_band = config_bands;
1832
1833                 if ((config_bands & BAND_GN) || (config_bands & BAND_AN))
1834                         adapter->adhoc_11n_enabled = true;
1835                 else
1836                         adapter->adhoc_11n_enabled = false;
1837         }
1838
1839         adapter->sec_chan_offset =
1840                 mwifiex_chan_type_to_sec_chan_offset(
1841                         cfg80211_get_chandef_type(&params->chandef));
1842         priv->adhoc_channel = ieee80211_frequency_to_channel(
1843                                 params->chandef.chan->center_freq);
1844
1845         wiphy_dbg(wiphy, "info: set ibss band %d, chan %d, chan offset %d\n",
1846                   config_bands, priv->adhoc_channel, adapter->sec_chan_offset);
1847
1848         return 0;
1849 }
1850
1851 /*
1852  * CFG802.11 operation handler to join an IBSS.
1853  *
1854  * This function does not work in any mode other than Ad-Hoc, or if
1855  * a join operation is already in progress.
1856  */
1857 static int
1858 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1859                            struct cfg80211_ibss_params *params)
1860 {
1861         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1862         int ret = 0;
1863
1864         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1865                 wiphy_err(wiphy, "request to join ibss received "
1866                                 "when station is not in ibss mode\n");
1867                 goto done;
1868         }
1869
1870         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1871                   (char *) params->ssid, params->bssid);
1872
1873         mwifiex_set_ibss_params(priv, params);
1874
1875         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1876                                      params->bssid, priv->bss_mode,
1877                                      params->chandef.chan, NULL,
1878                                      params->privacy);
1879 done:
1880         if (!ret) {
1881                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1882                 dev_dbg(priv->adapter->dev,
1883                         "info: joined/created adhoc network with bssid"
1884                         " %pM successfully\n", priv->cfg_bssid);
1885         } else {
1886                 dev_dbg(priv->adapter->dev,
1887                         "info: failed creating/joining adhoc network\n");
1888         }
1889
1890         return ret;
1891 }
1892
1893 /*
1894  * CFG802.11 operation handler to leave an IBSS.
1895  *
1896  * This function does not work if a leave operation is
1897  * already in progress.
1898  */
1899 static int
1900 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1901 {
1902         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1903
1904         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1905                   priv->cfg_bssid);
1906         if (mwifiex_deauthenticate(priv, NULL))
1907                 return -EFAULT;
1908
1909         memset(priv->cfg_bssid, 0, ETH_ALEN);
1910
1911         return 0;
1912 }
1913
1914 /*
1915  * CFG802.11 operation handler for scan request.
1916  *
1917  * This function issues a scan request to the firmware based upon
1918  * the user specified scan configuration. On successfull completion,
1919  * it also informs the results.
1920  */
1921 static int
1922 mwifiex_cfg80211_scan(struct wiphy *wiphy,
1923                       struct cfg80211_scan_request *request)
1924 {
1925         struct net_device *dev = request->wdev->netdev;
1926         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1927         int i, offset, ret;
1928         struct ieee80211_channel *chan;
1929         struct ieee_types_header *ie;
1930         struct mwifiex_user_scan_cfg *user_scan_cfg;
1931
1932         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1933
1934         if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
1935             atomic_read(&priv->wmm.tx_pkts_queued) >=
1936             MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
1937                 dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
1938                 return -EBUSY;
1939         }
1940
1941         /* Block scan request if scan operation or scan cleanup when interface
1942          * is disabled is in process
1943          */
1944         if (priv->scan_request || priv->scan_aborting) {
1945                 dev_err(priv->adapter->dev, "cmd: Scan already in process..\n");
1946                 return -EBUSY;
1947         }
1948
1949         user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
1950         if (!user_scan_cfg)
1951                 return -ENOMEM;
1952
1953         priv->scan_request = request;
1954
1955         user_scan_cfg->num_ssids = request->n_ssids;
1956         user_scan_cfg->ssid_list = request->ssids;
1957
1958         if (request->ie && request->ie_len) {
1959                 offset = 0;
1960                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1961                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1962                                 continue;
1963                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1964                         ie = (struct ieee_types_header *)(request->ie + offset);
1965                         memcpy(&priv->vs_ie[i].ie, ie, sizeof(*ie) + ie->len);
1966                         offset += sizeof(*ie) + ie->len;
1967
1968                         if (offset >= request->ie_len)
1969                                 break;
1970                 }
1971         }
1972
1973         for (i = 0; i < min_t(u32, request->n_channels,
1974                               MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
1975                 chan = request->channels[i];
1976                 user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1977                 user_scan_cfg->chan_list[i].radio_type = chan->band;
1978
1979                 if (chan->flags & IEEE80211_CHAN_NO_IR)
1980                         user_scan_cfg->chan_list[i].scan_type =
1981                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1982                 else
1983                         user_scan_cfg->chan_list[i].scan_type =
1984                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1985
1986                 user_scan_cfg->chan_list[i].scan_time = 0;
1987         }
1988
1989         ret = mwifiex_scan_networks(priv, user_scan_cfg);
1990         kfree(user_scan_cfg);
1991         if (ret) {
1992                 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1993                 priv->scan_aborting = false;
1994                 priv->scan_request = NULL;
1995                 return ret;
1996         }
1997
1998         if (request->ie && request->ie_len) {
1999                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
2000                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
2001                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
2002                                 memset(&priv->vs_ie[i].ie, 0,
2003                                        MWIFIEX_MAX_VSIE_LEN);
2004                         }
2005                 }
2006         }
2007         return 0;
2008 }
2009
2010 static void mwifiex_setup_vht_caps(struct ieee80211_sta_vht_cap *vht_info,
2011                                    struct mwifiex_private *priv)
2012 {
2013         struct mwifiex_adapter *adapter = priv->adapter;
2014
2015         vht_info->vht_supported = true;
2016
2017         vht_info->cap = adapter->hw_dot_11ac_dev_cap;
2018         /* Update MCS support for VHT */
2019         vht_info->vht_mcs.rx_mcs_map = cpu_to_le16(
2020                                 adapter->hw_dot_11ac_mcs_support & 0xFFFF);
2021         vht_info->vht_mcs.rx_highest = 0;
2022         vht_info->vht_mcs.tx_mcs_map = cpu_to_le16(
2023                                 adapter->hw_dot_11ac_mcs_support >> 16);
2024         vht_info->vht_mcs.tx_highest = 0;
2025 }
2026
2027 /*
2028  * This function sets up the CFG802.11 specific HT capability fields
2029  * with default values.
2030  *
2031  * The following default values are set -
2032  *      - HT Supported = True
2033  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
2034  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
2035  *      - HT Capabilities supported by firmware
2036  *      - MCS information, Rx mask = 0xff
2037  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
2038  */
2039 static void
2040 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
2041                       struct mwifiex_private *priv)
2042 {
2043         int rx_mcs_supp;
2044         struct ieee80211_mcs_info mcs_set;
2045         u8 *mcs = (u8 *)&mcs_set;
2046         struct mwifiex_adapter *adapter = priv->adapter;
2047
2048         ht_info->ht_supported = true;
2049         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2050         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2051
2052         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
2053
2054         /* Fill HT capability information */
2055         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2056                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2057         else
2058                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2059
2060         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
2061                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
2062         else
2063                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
2064
2065         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
2066                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
2067         else
2068                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
2069
2070         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
2071                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
2072         else
2073                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
2074
2075         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
2076                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
2077         else
2078                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
2079
2080         if (ISSUPP_GREENFIELD(adapter->hw_dot_11n_dev_cap))
2081                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
2082         else
2083                 ht_info->cap &= ~IEEE80211_HT_CAP_GRN_FLD;
2084
2085         if (ISENABLED_40MHZ_INTOLERANT(adapter->hw_dot_11n_dev_cap))
2086                 ht_info->cap |= IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2087         else
2088                 ht_info->cap &= ~IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2089
2090         if (ISSUPP_RXLDPC(adapter->hw_dot_11n_dev_cap))
2091                 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
2092         else
2093                 ht_info->cap &= ~IEEE80211_HT_CAP_LDPC_CODING;
2094
2095         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
2096         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
2097
2098         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
2099         /* Set MCS for 1x1 */
2100         memset(mcs, 0xff, rx_mcs_supp);
2101         /* Clear all the other values */
2102         memset(&mcs[rx_mcs_supp], 0,
2103                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
2104         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
2105             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2106                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
2107                 SETHT_MCS32(mcs_set.rx_mask);
2108
2109         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
2110
2111         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2112 }
2113
2114 /*
2115  *  create a new virtual interface with the given name
2116  */
2117 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
2118                                               const char *name,
2119                                               enum nl80211_iftype type,
2120                                               u32 *flags,
2121                                               struct vif_params *params)
2122 {
2123         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2124         struct mwifiex_private *priv;
2125         struct net_device *dev;
2126         void *mdev_priv;
2127         struct wireless_dev *wdev;
2128
2129         if (!adapter)
2130                 return ERR_PTR(-EFAULT);
2131
2132         switch (type) {
2133         case NL80211_IFTYPE_UNSPECIFIED:
2134         case NL80211_IFTYPE_STATION:
2135         case NL80211_IFTYPE_ADHOC:
2136                 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2137                 if (priv->bss_mode) {
2138                         wiphy_err(wiphy,
2139                                   "cannot create multiple sta/adhoc ifaces\n");
2140                         return ERR_PTR(-EINVAL);
2141                 }
2142
2143                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2144                 if (!wdev)
2145                         return ERR_PTR(-ENOMEM);
2146
2147                 wdev->wiphy = wiphy;
2148                 priv->wdev = wdev;
2149                 wdev->iftype = NL80211_IFTYPE_STATION;
2150
2151                 if (type == NL80211_IFTYPE_UNSPECIFIED)
2152                         priv->bss_mode = NL80211_IFTYPE_STATION;
2153                 else
2154                         priv->bss_mode = type;
2155
2156                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
2157                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2158                 priv->bss_priority = 0;
2159                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2160                 priv->bss_num = 0;
2161
2162                 break;
2163         case NL80211_IFTYPE_AP:
2164                 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
2165
2166                 if (priv->bss_mode) {
2167                         wiphy_err(wiphy, "Can't create multiple AP interfaces");
2168                         return ERR_PTR(-EINVAL);
2169                 }
2170
2171                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2172                 if (!wdev)
2173                         return ERR_PTR(-ENOMEM);
2174
2175                 priv->wdev = wdev;
2176                 wdev->wiphy = wiphy;
2177                 wdev->iftype = NL80211_IFTYPE_AP;
2178
2179                 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
2180                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2181                 priv->bss_priority = 0;
2182                 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
2183                 priv->bss_started = 0;
2184                 priv->bss_num = 0;
2185                 priv->bss_mode = type;
2186
2187                 break;
2188         case NL80211_IFTYPE_P2P_CLIENT:
2189                 priv = adapter->priv[MWIFIEX_BSS_TYPE_P2P];
2190
2191                 if (priv->bss_mode) {
2192                         wiphy_err(wiphy, "Can't create multiple P2P ifaces");
2193                         return ERR_PTR(-EINVAL);
2194                 }
2195
2196                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2197                 if (!wdev)
2198                         return ERR_PTR(-ENOMEM);
2199
2200                 priv->wdev = wdev;
2201                 wdev->wiphy = wiphy;
2202
2203                 /* At start-up, wpa_supplicant tries to change the interface
2204                  * to NL80211_IFTYPE_STATION if it is not managed mode.
2205                  */
2206                 wdev->iftype = NL80211_IFTYPE_P2P_CLIENT;
2207                 priv->bss_mode = NL80211_IFTYPE_P2P_CLIENT;
2208
2209                 /* Setting bss_type to P2P tells firmware that this interface
2210                  * is receiving P2P peers found during find phase and doing
2211                  * action frame handshake.
2212                  */
2213                 priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
2214
2215                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2216                 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
2217                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2218                 priv->bss_started = 0;
2219                 priv->bss_num = 0;
2220
2221                 if (mwifiex_cfg80211_init_p2p_client(priv)) {
2222                         wdev = ERR_PTR(-EFAULT);
2223                         goto done;
2224                 }
2225
2226                 break;
2227         default:
2228                 wiphy_err(wiphy, "type not supported\n");
2229                 return ERR_PTR(-EINVAL);
2230         }
2231
2232         dev = alloc_netdev_mqs(sizeof(struct mwifiex_private *), name,
2233                                ether_setup, IEEE80211_NUM_ACS, 1);
2234         if (!dev) {
2235                 wiphy_err(wiphy, "no memory available for netdevice\n");
2236                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2237                 wdev = ERR_PTR(-ENOMEM);
2238                 goto done;
2239         }
2240
2241         mwifiex_init_priv_params(priv, dev);
2242         priv->netdev = dev;
2243
2244         mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
2245         if (adapter->is_hw_11ac_capable)
2246                 mwifiex_setup_vht_caps(
2247                         &wiphy->bands[IEEE80211_BAND_2GHZ]->vht_cap, priv);
2248
2249         if (adapter->config_bands & BAND_A)
2250                 mwifiex_setup_ht_caps(
2251                         &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
2252
2253         if ((adapter->config_bands & BAND_A) && adapter->is_hw_11ac_capable)
2254                 mwifiex_setup_vht_caps(
2255                         &wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap, priv);
2256
2257         dev_net_set(dev, wiphy_net(wiphy));
2258         dev->ieee80211_ptr = priv->wdev;
2259         dev->ieee80211_ptr->iftype = priv->bss_mode;
2260         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
2261         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
2262
2263         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
2264         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
2265         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
2266         dev->ethtool_ops = &mwifiex_ethtool_ops;
2267
2268         mdev_priv = netdev_priv(dev);
2269         *((unsigned long *) mdev_priv) = (unsigned long) priv;
2270
2271         SET_NETDEV_DEV(dev, adapter->dev);
2272
2273         /* Register network device */
2274         if (register_netdevice(dev)) {
2275                 wiphy_err(wiphy, "cannot register virtual network device\n");
2276                 free_netdev(dev);
2277                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2278                 priv->netdev = NULL;
2279                 wdev = ERR_PTR(-EFAULT);
2280                 goto done;
2281         }
2282
2283         sema_init(&priv->async_sem, 1);
2284
2285         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
2286
2287 #ifdef CONFIG_DEBUG_FS
2288         mwifiex_dev_debugfs_init(priv);
2289 #endif
2290
2291 done:
2292         if (IS_ERR(wdev)) {
2293                 kfree(priv->wdev);
2294                 priv->wdev = NULL;
2295         }
2296
2297         return wdev;
2298 }
2299 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
2300
2301 /*
2302  * del_virtual_intf: remove the virtual interface determined by dev
2303  */
2304 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
2305 {
2306         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
2307
2308 #ifdef CONFIG_DEBUG_FS
2309         mwifiex_dev_debugfs_remove(priv);
2310 #endif
2311
2312         mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
2313
2314         if (netif_carrier_ok(priv->netdev))
2315                 netif_carrier_off(priv->netdev);
2316
2317         if (wdev->netdev->reg_state == NETREG_REGISTERED)
2318                 unregister_netdevice(wdev->netdev);
2319
2320         /* Clear the priv in adapter */
2321         priv->netdev->ieee80211_ptr = NULL;
2322         priv->netdev = NULL;
2323         kfree(wdev);
2324         priv->wdev = NULL;
2325
2326         priv->media_connected = false;
2327
2328         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2329
2330         return 0;
2331 }
2332 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
2333
2334 static bool
2335 mwifiex_is_pattern_supported(struct cfg80211_pkt_pattern *pat, s8 *byte_seq,
2336                              u8 max_byte_seq)
2337 {
2338         int j, k, valid_byte_cnt = 0;
2339         bool dont_care_byte = false;
2340
2341         for (j = 0; j < DIV_ROUND_UP(pat->pattern_len, 8); j++) {
2342                 for (k = 0; k < 8; k++) {
2343                         if (pat->mask[j] & 1 << k) {
2344                                 memcpy(byte_seq + valid_byte_cnt,
2345                                        &pat->pattern[j * 8 + k], 1);
2346                                 valid_byte_cnt++;
2347                                 if (dont_care_byte)
2348                                         return false;
2349                         } else {
2350                                 if (valid_byte_cnt)
2351                                         dont_care_byte = true;
2352                         }
2353
2354                         if (valid_byte_cnt > max_byte_seq)
2355                                 return false;
2356                 }
2357         }
2358
2359         byte_seq[max_byte_seq] = valid_byte_cnt;
2360
2361         return true;
2362 }
2363
2364 #ifdef CONFIG_PM
2365 static int mwifiex_cfg80211_suspend(struct wiphy *wiphy,
2366                                     struct cfg80211_wowlan *wowlan)
2367 {
2368         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2369         struct mwifiex_ds_mef_cfg mef_cfg;
2370         struct mwifiex_mef_entry *mef_entry;
2371         int i, filt_num = 0, ret;
2372         bool first_pat = true;
2373         u8 byte_seq[MWIFIEX_MEF_MAX_BYTESEQ + 1];
2374         const u8 ipv4_mc_mac[] = {0x33, 0x33};
2375         const u8 ipv6_mc_mac[] = {0x01, 0x00, 0x5e};
2376         struct mwifiex_private *priv =
2377                         mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
2378
2379         if (!wowlan) {
2380                 dev_warn(adapter->dev, "None of the WOWLAN triggers enabled\n");
2381                 return 0;
2382         }
2383
2384         if (!priv->media_connected) {
2385                 dev_warn(adapter->dev,
2386                          "Can not configure WOWLAN in disconnected state\n");
2387                 return 0;
2388         }
2389
2390         mef_entry = kzalloc(sizeof(*mef_entry), GFP_KERNEL);
2391         if (!mef_entry)
2392                 return -ENOMEM;
2393
2394         memset(&mef_cfg, 0, sizeof(mef_cfg));
2395         mef_cfg.num_entries = 1;
2396         mef_cfg.mef_entry = mef_entry;
2397         mef_entry->mode = MEF_MODE_HOST_SLEEP;
2398         mef_entry->action = MEF_ACTION_ALLOW_AND_WAKEUP_HOST;
2399
2400         for (i = 0; i < wowlan->n_patterns; i++) {
2401                 memset(byte_seq, 0, sizeof(byte_seq));
2402                 if (!mwifiex_is_pattern_supported(&wowlan->patterns[i],
2403                                                   byte_seq,
2404                                                   MWIFIEX_MEF_MAX_BYTESEQ)) {
2405                         wiphy_err(wiphy, "Pattern not supported\n");
2406                         kfree(mef_entry);
2407                         return -EOPNOTSUPP;
2408                 }
2409
2410                 if (!wowlan->patterns[i].pkt_offset) {
2411                         if (!(byte_seq[0] & 0x01) &&
2412                             (byte_seq[MWIFIEX_MEF_MAX_BYTESEQ] == 1)) {
2413                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2414                                 continue;
2415                         } else if (is_broadcast_ether_addr(byte_seq)) {
2416                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_BROADCAST;
2417                                 continue;
2418                         } else if ((!memcmp(byte_seq, ipv4_mc_mac, 2) &&
2419                                     (byte_seq[MWIFIEX_MEF_MAX_BYTESEQ] == 2)) ||
2420                                    (!memcmp(byte_seq, ipv6_mc_mac, 3) &&
2421                                     (byte_seq[MWIFIEX_MEF_MAX_BYTESEQ] == 3))) {
2422                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_MULTICAST;
2423                                 continue;
2424                         }
2425                 }
2426
2427                 mef_entry->filter[filt_num].repeat = 1;
2428                 mef_entry->filter[filt_num].offset =
2429                                                 wowlan->patterns[i].pkt_offset;
2430                 memcpy(mef_entry->filter[filt_num].byte_seq, byte_seq,
2431                        sizeof(byte_seq));
2432                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2433
2434                 if (first_pat)
2435                         first_pat = false;
2436                 else
2437                         mef_entry->filter[filt_num].filt_action = TYPE_AND;
2438
2439                 filt_num++;
2440         }
2441
2442         if (wowlan->magic_pkt) {
2443                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2444                 mef_entry->filter[filt_num].repeat = 16;
2445                 memcpy(mef_entry->filter[filt_num].byte_seq, priv->curr_addr,
2446                        ETH_ALEN);
2447                 mef_entry->filter[filt_num].byte_seq[MWIFIEX_MEF_MAX_BYTESEQ] =
2448                                                                 ETH_ALEN;
2449                 mef_entry->filter[filt_num].offset = 14;
2450                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2451                 if (filt_num)
2452                         mef_entry->filter[filt_num].filt_action = TYPE_OR;
2453         }
2454
2455         if (!mef_cfg.criteria)
2456                 mef_cfg.criteria = MWIFIEX_CRITERIA_BROADCAST |
2457                                    MWIFIEX_CRITERIA_UNICAST |
2458                                    MWIFIEX_CRITERIA_MULTICAST;
2459
2460         ret =  mwifiex_send_cmd_sync(priv, HostCmd_CMD_MEF_CFG,
2461                                      HostCmd_ACT_GEN_SET, 0,
2462                                      &mef_cfg);
2463
2464         kfree(mef_entry);
2465         return ret;
2466 }
2467
2468 static int mwifiex_cfg80211_resume(struct wiphy *wiphy)
2469 {
2470         return 0;
2471 }
2472
2473 static void mwifiex_cfg80211_set_wakeup(struct wiphy *wiphy,
2474                                        bool enabled)
2475 {
2476         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2477
2478         device_set_wakeup_enable(adapter->dev, enabled);
2479 }
2480 #endif
2481
2482 static int mwifiex_get_coalesce_pkt_type(u8 *byte_seq)
2483 {
2484         const u8 ipv4_mc_mac[] = {0x33, 0x33};
2485         const u8 ipv6_mc_mac[] = {0x01, 0x00, 0x5e};
2486         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff};
2487
2488         if ((byte_seq[0] & 0x01) &&
2489             (byte_seq[MWIFIEX_COALESCE_MAX_BYTESEQ] == 1))
2490                 return PACKET_TYPE_UNICAST;
2491         else if (!memcmp(byte_seq, bc_mac, 4))
2492                 return PACKET_TYPE_BROADCAST;
2493         else if ((!memcmp(byte_seq, ipv4_mc_mac, 2) &&
2494                   byte_seq[MWIFIEX_COALESCE_MAX_BYTESEQ] == 2) ||
2495                  (!memcmp(byte_seq, ipv6_mc_mac, 3) &&
2496                   byte_seq[MWIFIEX_COALESCE_MAX_BYTESEQ] == 3))
2497                 return PACKET_TYPE_MULTICAST;
2498
2499         return 0;
2500 }
2501
2502 static int
2503 mwifiex_fill_coalesce_rule_info(struct mwifiex_private *priv,
2504                                 struct cfg80211_coalesce_rules *crule,
2505                                 struct mwifiex_coalesce_rule *mrule)
2506 {
2507         u8 byte_seq[MWIFIEX_COALESCE_MAX_BYTESEQ + 1];
2508         struct filt_field_param *param;
2509         int i;
2510
2511         mrule->max_coalescing_delay = crule->delay;
2512
2513         param = mrule->params;
2514
2515         for (i = 0; i < crule->n_patterns; i++) {
2516                 memset(byte_seq, 0, sizeof(byte_seq));
2517                 if (!mwifiex_is_pattern_supported(&crule->patterns[i],
2518                                                   byte_seq,
2519                                                 MWIFIEX_COALESCE_MAX_BYTESEQ)) {
2520                         dev_err(priv->adapter->dev, "Pattern not supported\n");
2521                         return -EOPNOTSUPP;
2522                 }
2523
2524                 if (!crule->patterns[i].pkt_offset) {
2525                         u8 pkt_type;
2526
2527                         pkt_type = mwifiex_get_coalesce_pkt_type(byte_seq);
2528                         if (pkt_type && mrule->pkt_type) {
2529                                 dev_err(priv->adapter->dev,
2530                                         "Multiple packet types not allowed\n");
2531                                 return -EOPNOTSUPP;
2532                         } else if (pkt_type) {
2533                                 mrule->pkt_type = pkt_type;
2534                                 continue;
2535                         }
2536                 }
2537
2538                 if (crule->condition == NL80211_COALESCE_CONDITION_MATCH)
2539                         param->operation = RECV_FILTER_MATCH_TYPE_EQ;
2540                 else
2541                         param->operation = RECV_FILTER_MATCH_TYPE_NE;
2542
2543                 param->operand_len = byte_seq[MWIFIEX_COALESCE_MAX_BYTESEQ];
2544                 memcpy(param->operand_byte_stream, byte_seq,
2545                        param->operand_len);
2546                 param->offset = crule->patterns[i].pkt_offset;
2547                 param++;
2548
2549                 mrule->num_of_fields++;
2550         }
2551
2552         if (!mrule->pkt_type) {
2553                 dev_err(priv->adapter->dev,
2554                         "Packet type can not be determined\n");
2555                 return -EOPNOTSUPP;
2556         }
2557
2558         return 0;
2559 }
2560
2561 static int mwifiex_cfg80211_set_coalesce(struct wiphy *wiphy,
2562                                          struct cfg80211_coalesce *coalesce)
2563 {
2564         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2565         int i, ret;
2566         struct mwifiex_ds_coalesce_cfg coalesce_cfg;
2567         struct mwifiex_private *priv =
2568                         mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
2569
2570         memset(&coalesce_cfg, 0, sizeof(coalesce_cfg));
2571         if (!coalesce) {
2572                 dev_dbg(adapter->dev,
2573                         "Disable coalesce and reset all previous rules\n");
2574                 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_COALESCE_CFG,
2575                                              HostCmd_ACT_GEN_SET, 0,
2576                                              &coalesce_cfg);
2577         }
2578
2579         coalesce_cfg.num_of_rules = coalesce->n_rules;
2580         for (i = 0; i < coalesce->n_rules; i++) {
2581                 ret = mwifiex_fill_coalesce_rule_info(priv, &coalesce->rules[i],
2582                                                       &coalesce_cfg.rule[i]);
2583                 if (ret) {
2584                         dev_err(priv->adapter->dev,
2585                                 "Recheck the patterns provided for rule %d\n",
2586                                 i + 1);
2587                         return ret;
2588                 }
2589         }
2590
2591         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_COALESCE_CFG,
2592                                      HostCmd_ACT_GEN_SET, 0, &coalesce_cfg);
2593 }
2594
2595 /* station cfg80211 operations */
2596 static struct cfg80211_ops mwifiex_cfg80211_ops = {
2597         .add_virtual_intf = mwifiex_add_virtual_intf,
2598         .del_virtual_intf = mwifiex_del_virtual_intf,
2599         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
2600         .scan = mwifiex_cfg80211_scan,
2601         .connect = mwifiex_cfg80211_connect,
2602         .disconnect = mwifiex_cfg80211_disconnect,
2603         .get_station = mwifiex_cfg80211_get_station,
2604         .dump_station = mwifiex_cfg80211_dump_station,
2605         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
2606         .join_ibss = mwifiex_cfg80211_join_ibss,
2607         .leave_ibss = mwifiex_cfg80211_leave_ibss,
2608         .add_key = mwifiex_cfg80211_add_key,
2609         .del_key = mwifiex_cfg80211_del_key,
2610         .mgmt_tx = mwifiex_cfg80211_mgmt_tx,
2611         .mgmt_frame_register = mwifiex_cfg80211_mgmt_frame_register,
2612         .remain_on_channel = mwifiex_cfg80211_remain_on_channel,
2613         .cancel_remain_on_channel = mwifiex_cfg80211_cancel_remain_on_channel,
2614         .set_default_key = mwifiex_cfg80211_set_default_key,
2615         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
2616         .set_tx_power = mwifiex_cfg80211_set_tx_power,
2617         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
2618         .start_ap = mwifiex_cfg80211_start_ap,
2619         .stop_ap = mwifiex_cfg80211_stop_ap,
2620         .change_beacon = mwifiex_cfg80211_change_beacon,
2621         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
2622         .set_antenna = mwifiex_cfg80211_set_antenna,
2623         .del_station = mwifiex_cfg80211_del_station,
2624 #ifdef CONFIG_PM
2625         .suspend = mwifiex_cfg80211_suspend,
2626         .resume = mwifiex_cfg80211_resume,
2627         .set_wakeup = mwifiex_cfg80211_set_wakeup,
2628 #endif
2629         .set_coalesce = mwifiex_cfg80211_set_coalesce,
2630 };
2631
2632 #ifdef CONFIG_PM
2633 static const struct wiphy_wowlan_support mwifiex_wowlan_support = {
2634         .flags = WIPHY_WOWLAN_MAGIC_PKT,
2635         .n_patterns = MWIFIEX_MEF_MAX_FILTERS,
2636         .pattern_min_len = 1,
2637         .pattern_max_len = MWIFIEX_MAX_PATTERN_LEN,
2638         .max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
2639 };
2640 #endif
2641
2642 static bool mwifiex_is_valid_alpha2(const char *alpha2)
2643 {
2644         if (!alpha2 || strlen(alpha2) != 2)
2645                 return false;
2646
2647         if (isalpha(alpha2[0]) && isalpha(alpha2[1]))
2648                 return true;
2649
2650         return false;
2651 }
2652
2653 static const struct wiphy_coalesce_support mwifiex_coalesce_support = {
2654         .n_rules = MWIFIEX_COALESCE_MAX_RULES,
2655         .max_delay = MWIFIEX_MAX_COALESCING_DELAY,
2656         .n_patterns = MWIFIEX_COALESCE_MAX_FILTERS,
2657         .pattern_min_len = 1,
2658         .pattern_max_len = MWIFIEX_MAX_PATTERN_LEN,
2659         .max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
2660 };
2661
2662 /*
2663  * This function registers the device with CFG802.11 subsystem.
2664  *
2665  * The function creates the wireless device/wiphy, populates it with
2666  * default parameters and handler function pointers, and finally
2667  * registers the device.
2668  */
2669
2670 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
2671 {
2672         int ret;
2673         void *wdev_priv;
2674         struct wiphy *wiphy;
2675         struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2676         u8 *country_code;
2677
2678         /* create a new wiphy for use with cfg80211 */
2679         wiphy = wiphy_new(&mwifiex_cfg80211_ops,
2680                           sizeof(struct mwifiex_adapter *));
2681         if (!wiphy) {
2682                 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
2683                 return -ENOMEM;
2684         }
2685         wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
2686         wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
2687         wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
2688         wiphy->max_remain_on_channel_duration = 5000;
2689         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2690                                  BIT(NL80211_IFTYPE_ADHOC) |
2691                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2692                                  BIT(NL80211_IFTYPE_P2P_GO) |
2693                                  BIT(NL80211_IFTYPE_AP);
2694
2695         wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
2696         if (adapter->config_bands & BAND_A)
2697                 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
2698         else
2699                 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
2700
2701         wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
2702         wiphy->n_iface_combinations = 1;
2703
2704         /* Initialize cipher suits */
2705         wiphy->cipher_suites = mwifiex_cipher_suites;
2706         wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
2707
2708         memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
2709         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2710         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
2711                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
2712                         WIPHY_FLAG_AP_UAPSD |
2713                         WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2714         wiphy->regulatory_flags |=
2715                         REGULATORY_CUSTOM_REG |
2716                         REGULATORY_STRICT_REG;
2717
2718         wiphy_apply_custom_regulatory(wiphy, &mwifiex_world_regdom_custom);
2719
2720 #ifdef CONFIG_PM
2721         wiphy->wowlan = &mwifiex_wowlan_support;
2722 #endif
2723
2724         wiphy->coalesce = &mwifiex_coalesce_support;
2725
2726         wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
2727                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
2728                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
2729
2730         wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
2731         wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
2732
2733         wiphy->features |= NL80211_FEATURE_HT_IBSS |
2734                            NL80211_FEATURE_INACTIVITY_TIMER |
2735                            NL80211_FEATURE_LOW_PRIORITY_SCAN;
2736
2737         /* Reserve space for mwifiex specific private data for BSS */
2738         wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
2739
2740         wiphy->reg_notifier = mwifiex_reg_notifier;
2741
2742         /* Set struct mwifiex_adapter pointer in wiphy_priv */
2743         wdev_priv = wiphy_priv(wiphy);
2744         *(unsigned long *)wdev_priv = (unsigned long)adapter;
2745
2746         set_wiphy_dev(wiphy, priv->adapter->dev);
2747
2748         ret = wiphy_register(wiphy);
2749         if (ret < 0) {
2750                 dev_err(adapter->dev,
2751                         "%s: wiphy_register failed: %d\n", __func__, ret);
2752                 wiphy_free(wiphy);
2753                 return ret;
2754         }
2755
2756         if (reg_alpha2 && mwifiex_is_valid_alpha2(reg_alpha2)) {
2757                 wiphy_info(wiphy, "driver hint alpha2: %2.2s\n", reg_alpha2);
2758                 regulatory_hint(wiphy, reg_alpha2);
2759         } else {
2760                 country_code = mwifiex_11d_code_2_region(adapter->region_code);
2761                 if (country_code)
2762                         wiphy_info(wiphy, "ignoring F/W country code %2.2s\n",
2763                                    country_code);
2764         }
2765
2766         adapter->wiphy = wiphy;
2767         return ret;
2768 }