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_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  54                 /* Channel 14 */
  55                 REG_RULE(2484-10, 2484+10, 20, 3, 20,
  56                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  57                          NL80211_RRF_NO_OFDM),
  58                 /* Channel 36 - 48 */
  59                 REG_RULE(5180-10, 5240+10, 40, 3, 20,
  60                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  61                 /* Channel 149 - 165 */
  62                 REG_RULE(5745-10, 5825+10, 40, 3, 20,
  63                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  64                 /* Channel 52 - 64 */
  65                 REG_RULE(5260-10, 5320+10, 40, 3, 30,
  66                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  67                          NL80211_RRF_DFS),
  68                 /* Channel 100 - 140 */
  69                 REG_RULE(5500-10, 5700+10, 40, 3, 30,
  70                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  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 ieee80211_channel *chan, bool offchan,
 188                          unsigned int wait, const u8 *buf, size_t len,
 189                          bool no_cck, bool dont_wait_for_ack, u64 *cookie)
 190 {
 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
 226         mwifiex_form_mgmt_frame(skb, buf, len);
 227         mwifiex_queue_tx_pkt(priv, skb);
 228
 229         *cookie = prandom_u32() | 1;
 230         cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true, GFP_ATOMIC);
 231
 232         wiphy_dbg(wiphy, "info: management frame transmitted\n");
 233         return 0;
 234 }
 235
 236 /*
 237  * CFG802.11 operation handler to register a mgmt frame.
 238  */
 239 static void
 240 mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
 241                                      struct wireless_dev *wdev,
 242                                      u16 frame_type, bool reg)
 243 {
 244         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 245         u32 mask;
 246
 247         if (reg)
 248                 mask = priv->mgmt_frame_mask | BIT(frame_type >> 4);
 249         else
 250                 mask = priv->mgmt_frame_mask & ~BIT(frame_type >> 4);
 251
 252         if (mask != priv->mgmt_frame_mask) {
 253                 priv->mgmt_frame_mask = mask;
 254                 mwifiex_send_cmd_async(priv, HostCmd_CMD_MGMT_FRAME_REG,
 255                                        HostCmd_ACT_GEN_SET, 0,
 256                                        &priv->mgmt_frame_mask);
 257                 wiphy_dbg(wiphy, "info: mgmt frame registered\n");
 258         }
 259 }
 260
 261 /*
 262  * CFG802.11 operation handler to remain on channel.
 263  */
 264 static int
 265 mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
 266                                    struct wireless_dev *wdev,
 267                                    struct ieee80211_channel *chan,
 268                                    unsigned int duration, u64 *cookie)
 269 {
 270         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 271         int ret;
 272
 273         if (!chan || !cookie) {
 274                 wiphy_err(wiphy, "Invalid parameter for ROC\n");
 275                 return -EINVAL;
 276         }
 277
 278         if (priv->roc_cfg.cookie) {
 279                 wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llu\n",
 280                           priv->roc_cfg.cookie);
 281                 return -EBUSY;
 282         }
 283
 284         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_SET, chan,
 285                                          duration);
 286
 287         if (!ret) {
 288                 *cookie = prandom_u32() | 1;
 289                 priv->roc_cfg.cookie = *cookie;
 290                 priv->roc_cfg.chan = *chan;
 291
 292                 cfg80211_ready_on_channel(wdev, *cookie, chan,
 293                                           duration, GFP_ATOMIC);
 294
 295                 wiphy_dbg(wiphy, "info: ROC, cookie = 0x%llx\n", *cookie);
 296         }
 297
 298         return ret;
 299 }
 300
 301 /*
 302  * CFG802.11 operation handler to cancel remain on channel.
 303  */
 304 static int
 305 mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
 306                                           struct wireless_dev *wdev, u64 cookie)
 307 {
 308         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 309         int ret;
 310
 311         if (cookie != priv->roc_cfg.cookie)
 312                 return -ENOENT;
 313
 314         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_REMOVE,
 315                                          &priv->roc_cfg.chan, 0);
 316
 317         if (!ret) {
 318                 cfg80211_remain_on_channel_expired(wdev, cookie,
 319                                                    &priv->roc_cfg.chan,
 320                                                    GFP_ATOMIC);
 321
 322                 memset(&priv->roc_cfg, 0, sizeof(struct mwifiex_roc_cfg));
 323
 324                 wiphy_dbg(wiphy, "info: cancel ROC, cookie = 0x%llx\n", cookie);
 325         }
 326
 327         return ret;
 328 }
 329
 330 /*
 331  * CFG802.11 operation handler to set Tx power.
 332  */
 333 static int
 334 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 335                               struct wireless_dev *wdev,
 336                               enum nl80211_tx_power_setting type,
 337                               int mbm)
 338 {
 339         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 340         struct mwifiex_private *priv;
 341         struct mwifiex_power_cfg power_cfg;
 342         int dbm = MBM_TO_DBM(mbm);
 343
 344         if (type == NL80211_TX_POWER_FIXED) {
 345                 power_cfg.is_power_auto = 0;
 346                 power_cfg.power_level = dbm;
 347         } else {
 348                 power_cfg.is_power_auto = 1;
 349         }
 350
 351         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 352
 353         return mwifiex_set_tx_power(priv, &power_cfg);
 354 }
 355
 356 /*
 357  * CFG802.11 operation handler to set Power Save option.
 358  *
 359  * The timeout value, if provided, is currently ignored.
 360  */
 361 static int
 362 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 363                                 struct net_device *dev,
 364                                 bool enabled, int timeout)
 365 {
 366         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 367         u32 ps_mode;
 368
 369         if (timeout)
 370                 wiphy_dbg(wiphy,
 371                           "info: ignore timeout value for IEEE Power Save\n");
 372
 373         ps_mode = enabled;
 374
 375         return mwifiex_drv_set_power(priv, &ps_mode);
 376 }
 377
 378 /*
 379  * CFG802.11 operation handler to set the default network key.
 380  */
 381 static int
 382 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 383                                  u8 key_index, bool unicast,
 384                                  bool multicast)
 385 {
 386         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 387
 388         /* Return if WEP key not configured */
 389         if (!priv->sec_info.wep_enabled)
 390                 return 0;
 391
 392         if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
 393                 priv->wep_key_curr_index = key_index;
 394         } else if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index,
 395                                       NULL, 0)) {
 396                 wiphy_err(wiphy, "set default Tx key index\n");
 397                 return -EFAULT;
 398         }
 399
 400         return 0;
 401 }
 402
 403 /*
 404  * CFG802.11 operation handler to add a network key.
 405  */
 406 static int
 407 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 408                          u8 key_index, bool pairwise, const u8 *mac_addr,
 409                          struct key_params *params)
 410 {
 411         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 412         struct mwifiex_wep_key *wep_key;
 413         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 414         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 415
 416         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP &&
 417             (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 418              params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 419                 if (params->key && params->key_len) {
 420                         wep_key = &priv->wep_key[key_index];
 421                         memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 422                         memcpy(wep_key->key_material, params->key,
 423                                params->key_len);
 424                         wep_key->key_index = key_index;
 425                         wep_key->key_length = params->key_len;
 426                         priv->sec_info.wep_enabled = 1;
 427                 }
 428                 return 0;
 429         }
 430
 431         if (mwifiex_set_encode(priv, params, params->key, params->key_len,
 432                                key_index, peer_mac, 0)) {
 433                 wiphy_err(wiphy, "crypto keys added\n");
 434                 return -EFAULT;
 435         }
 436
 437         return 0;
 438 }
 439
 440 /*
 441  * This function sends domain information to the firmware.
 442  *
 443  * The following information are passed to the firmware -
 444  *      - Country codes
 445  *      - Sub bands (first channel, number of channels, maximum Tx power)
 446  */
 447 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 448 {
 449         u8 no_of_triplet = 0;
 450         struct ieee80211_country_ie_triplet *t;
 451         u8 no_of_parsed_chan = 0;
 452         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 453         u8 i, flag = 0;
 454         enum ieee80211_band band;
 455         struct ieee80211_supported_band *sband;
 456         struct ieee80211_channel *ch;
 457         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 458         struct mwifiex_private *priv;
 459         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 460
 461         /* Set country code */
 462         domain_info->country_code[0] = adapter->country_code[0];
 463         domain_info->country_code[1] = adapter->country_code[1];
 464         domain_info->country_code[2] = ' ';
 465
 466         band = mwifiex_band_to_radio_type(adapter->config_bands);
 467         if (!wiphy->bands[band]) {
 468                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 469                 return -1;
 470         }
 471
 472         sband = wiphy->bands[band];
 473
 474         for (i = 0; i < sband->n_channels ; i++) {
 475                 ch = &sband->channels[i];
 476                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 477                         continue;
 478
 479                 if (!flag) {
 480                         flag = 1;
 481                         first_chan = (u32) ch->hw_value;
 482                         next_chan = first_chan;
 483                         max_pwr = ch->max_power;
 484                         no_of_parsed_chan = 1;
 485                         continue;
 486                 }
 487
 488                 if (ch->hw_value == next_chan + 1 &&
 489                     ch->max_power == max_pwr) {
 490                         next_chan++;
 491                         no_of_parsed_chan++;
 492                 } else {
 493                         t = &domain_info->triplet[no_of_triplet];
 494                         t->chans.first_channel = first_chan;
 495                         t->chans.num_channels = no_of_parsed_chan;
 496                         t->chans.max_power = max_pwr;
 497                         no_of_triplet++;
 498                         first_chan = (u32) ch->hw_value;
 499                         next_chan = first_chan;
 500                         max_pwr = ch->max_power;
 501                         no_of_parsed_chan = 1;
 502                 }
 503         }
 504
 505         if (flag) {
 506                 t = &domain_info->triplet[no_of_triplet];
 507                 t->chans.first_channel = first_chan;
 508                 t->chans.num_channels = no_of_parsed_chan;
 509                 t->chans.max_power = max_pwr;
 510                 no_of_triplet++;
 511         }
 512
 513         domain_info->no_of_triplet = no_of_triplet;
 514
 515         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 516
 517         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 518                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 519                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 520                 return -1;
 521         }
 522
 523         return 0;
 524 }
 525
 526 /*
 527  * CFG802.11 regulatory domain callback function.
 528  *
 529  * This function is called when the regulatory domain is changed due to the
 530  * following reasons -
 531  *      - Set by driver
 532  *      - Set by system core
 533  *      - Set by user
 534  *      - Set bt Country IE
 535  */
 536 static void mwifiex_reg_notifier(struct wiphy *wiphy,
 537                                  struct regulatory_request *request)
 538 {
 539         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 540
 541         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
 542                   request->alpha2[0], request->alpha2[1]);
 543
 544         memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
 545
 546         switch (request->initiator) {
 547         case NL80211_REGDOM_SET_BY_DRIVER:
 548         case NL80211_REGDOM_SET_BY_CORE:
 549         case NL80211_REGDOM_SET_BY_USER:
 550                 break;
 551                 /* Todo: apply driver specific changes in channel flags based
 552                    on the request initiator if necessary. */
 553         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 554                 break;
 555         }
 556         mwifiex_send_domain_info_cmd_fw(wiphy);
 557 }
 558
 559 /*
 560  * This function sets the fragmentation threshold.
 561  *
 562  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 563  * and MWIFIEX_FRAG_MAX_VALUE.
 564  */
 565 static int
 566 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 567 {
 568         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 569             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 570                 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
 571
 572         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 573                                      HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 574                                      &frag_thr);
 575 }
 576
 577 /*
 578  * This function sets the RTS threshold.
 579
 580  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 581  * and MWIFIEX_RTS_MAX_VALUE.
 582  */
 583 static int
 584 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 585 {
 586         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 587                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 588
 589         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 590                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 591                                     &rts_thr);
 592 }
 593
 594 /*
 595  * CFG802.11 operation handler to set wiphy parameters.
 596  *
 597  * This function can be used to set the RTS threshold and the
 598  * Fragmentation threshold of the driver.
 599  */
 600 static int
 601 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 602 {
 603         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 604         struct mwifiex_private *priv;
 605         struct mwifiex_uap_bss_param *bss_cfg;
 606         int ret, bss_started, i;
 607
 608         for (i = 0; i < adapter->priv_num; i++) {
 609                 priv = adapter->priv[i];
 610
 611                 switch (priv->bss_role) {
 612                 case MWIFIEX_BSS_ROLE_UAP:
 613                         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
 614                                           GFP_KERNEL);
 615                         if (!bss_cfg)
 616                                 return -ENOMEM;
 617
 618                         mwifiex_set_sys_config_invalid_data(bss_cfg);
 619
 620                         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 621                                 bss_cfg->rts_threshold = wiphy->rts_threshold;
 622                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 623                                 bss_cfg->frag_threshold = wiphy->frag_threshold;
 624                         if (changed & WIPHY_PARAM_RETRY_LONG)
 625                                 bss_cfg->retry_limit = wiphy->retry_long;
 626
 627                         bss_started = priv->bss_started;
 628
 629                         ret = mwifiex_send_cmd_sync(priv,
 630                                                     HostCmd_CMD_UAP_BSS_STOP,
 631                                                     HostCmd_ACT_GEN_SET, 0,
 632                                                     NULL);
 633                         if (ret) {
 634                                 wiphy_err(wiphy, "Failed to stop the BSS\n");
 635                                 kfree(bss_cfg);
 636                                 return ret;
 637                         }
 638
 639                         ret = mwifiex_send_cmd_async(priv,
 640                                                      HostCmd_CMD_UAP_SYS_CONFIG,
 641                                                      HostCmd_ACT_GEN_SET,
 642                                                      UAP_BSS_PARAMS_I, bss_cfg);
 643
 644                         kfree(bss_cfg);
 645
 646                         if (ret) {
 647                                 wiphy_err(wiphy, "Failed to set bss config\n");
 648                                 return ret;
 649                         }
 650
 651                         if (!bss_started)
 652                                 break;
 653
 654                         ret = mwifiex_send_cmd_async(priv,
 655                                                      HostCmd_CMD_UAP_BSS_START,
 656                                                      HostCmd_ACT_GEN_SET, 0,
 657                                                      NULL);
 658                         if (ret) {
 659                                 wiphy_err(wiphy, "Failed to start BSS\n");
 660                                 return ret;
 661                         }
 662
 663                         break;
 664                 case MWIFIEX_BSS_ROLE_STA:
 665                         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 666                                 ret = mwifiex_set_rts(priv,
 667                                                       wiphy->rts_threshold);
 668                                 if (ret)
 669                                         return ret;
 670                         }
 671                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 672                                 ret = mwifiex_set_frag(priv,
 673                                                        wiphy->frag_threshold);
 674                                 if (ret)
 675                                         return ret;
 676                         }
 677                         break;
 678                 }
 679         }
 680
 681         return 0;
 682 }
 683
 684 static int
 685 mwifiex_cfg80211_deinit_p2p(struct mwifiex_private *priv)
 686 {
 687         u16 mode = P2P_MODE_DISABLE;
 688
 689         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA)
 690                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_STA);
 691
 692         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 693                                   HostCmd_ACT_GEN_SET, 0, &mode))
 694                 return -1;
 695
 696         return 0;
 697 }
 698
 699 /*
 700  * This function initializes the functionalities for P2P client.
 701  * The P2P client initialization sequence is:
 702  * disable -> device -> client
 703  */
 704 static int
 705 mwifiex_cfg80211_init_p2p_client(struct mwifiex_private *priv)
 706 {
 707         u16 mode;
 708
 709         if (mwifiex_cfg80211_deinit_p2p(priv))
 710                 return -1;
 711
 712         mode = P2P_MODE_DEVICE;
 713         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 714                                   HostCmd_ACT_GEN_SET, 0, &mode))
 715                 return -1;
 716
 717         mode = P2P_MODE_CLIENT;
 718         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 719                                   HostCmd_ACT_GEN_SET, 0, &mode))
 720                 return -1;
 721
 722         return 0;
 723 }
 724
 725 /*
 726  * This function initializes the functionalities for P2P GO.
 727  * The P2P GO initialization sequence is:
 728  * disable -> device -> GO
 729  */
 730 static int
 731 mwifiex_cfg80211_init_p2p_go(struct mwifiex_private *priv)
 732 {
 733         u16 mode;
 734
 735         if (mwifiex_cfg80211_deinit_p2p(priv))
 736                 return -1;
 737
 738         mode = P2P_MODE_DEVICE;
 739         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 740                                   HostCmd_ACT_GEN_SET, 0, &mode))
 741                 return -1;
 742
 743         mode = P2P_MODE_GO;
 744         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 745                                   HostCmd_ACT_GEN_SET, 0, &mode))
 746                 return -1;
 747
 748         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
 749                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_UAP);
 750
 751         return 0;
 752 }
 753
 754 /*
 755  * CFG802.11 operation handler to change interface type.
 756  */
 757 static int
 758 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 759                                      struct net_device *dev,
 760                                      enum nl80211_iftype type, u32 *flags,
 761                                      struct vif_params *params)
 762 {
 763         int ret;
 764         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 765
 766         switch (dev->ieee80211_ptr->iftype) {
 767         case NL80211_IFTYPE_ADHOC:
 768                 switch (type) {
 769                 case NL80211_IFTYPE_STATION:
 770                         break;
 771                 case NL80211_IFTYPE_UNSPECIFIED:
 772                         wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
 773                 case NL80211_IFTYPE_ADHOC:      /* This shouldn't happen */
 774                         return 0;
 775                 case NL80211_IFTYPE_AP:
 776                 default:
 777                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 778                                   dev->name, type);
 779                         return -EOPNOTSUPP;
 780                 }
 781                 break;
 782         case NL80211_IFTYPE_STATION:
 783                 switch (type) {
 784                 case NL80211_IFTYPE_ADHOC:
 785                         break;
 786                 case NL80211_IFTYPE_P2P_CLIENT:
 787                         if (mwifiex_cfg80211_init_p2p_client(priv))
 788                                 return -EFAULT;
 789                         dev->ieee80211_ptr->iftype = type;
 790                         return 0;
 791                 case NL80211_IFTYPE_P2P_GO:
 792                         if (mwifiex_cfg80211_init_p2p_go(priv))
 793                                 return -EFAULT;
 794                         dev->ieee80211_ptr->iftype = type;
 795                         return 0;
 796                 case NL80211_IFTYPE_UNSPECIFIED:
 797                         wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
 798                 case NL80211_IFTYPE_STATION:    /* This shouldn't happen */
 799                         return 0;
 800                 case NL80211_IFTYPE_AP:
 801                 default:
 802                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 803                                   dev->name, type);
 804                         return -EOPNOTSUPP;
 805                 }
 806                 break;
 807         case NL80211_IFTYPE_AP:
 808                 switch (type) {
 809                 case NL80211_IFTYPE_UNSPECIFIED:
 810                         wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
 811                 case NL80211_IFTYPE_AP:         /* This shouldn't happen */
 812                         return 0;
 813                 case NL80211_IFTYPE_ADHOC:
 814                 case NL80211_IFTYPE_STATION:
 815                 default:
 816                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 817                                   dev->name, type);
 818                         return -EOPNOTSUPP;
 819                 }
 820                 break;
 821         case NL80211_IFTYPE_P2P_CLIENT:
 822         case NL80211_IFTYPE_P2P_GO:
 823                 switch (type) {
 824                 case NL80211_IFTYPE_STATION:
 825                         if (mwifiex_cfg80211_deinit_p2p(priv))
 826                                 return -EFAULT;
 827                         dev->ieee80211_ptr->iftype = type;
 828                         return 0;
 829                 default:
 830                         return -EOPNOTSUPP;
 831                 }
 832                 break;
 833         default:
 834                 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
 835                           dev->name, dev->ieee80211_ptr->iftype);
 836                 return -EOPNOTSUPP;
 837         }
 838
 839         dev->ieee80211_ptr->iftype = type;
 840         priv->bss_mode = type;
 841         mwifiex_deauthenticate(priv, NULL);
 842
 843         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 844
 845         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 846                                     HostCmd_ACT_GEN_SET, 0, NULL);
 847
 848         return ret;
 849 }
 850
 851 static void
 852 mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
 853                      struct rate_info *rate)
 854 {
 855         struct mwifiex_adapter *adapter = priv->adapter;
 856
 857         if (adapter->is_hw_11ac_capable) {
 858                 /* bit[1-0]: 00=LG 01=HT 10=VHT */
 859                 if (tx_htinfo & BIT(0)) {
 860                         /* HT */
 861                         rate->mcs = priv->tx_rate;
 862                         rate->flags |= RATE_INFO_FLAGS_MCS;
 863                 }
 864                 if (tx_htinfo & BIT(1)) {
 865                         /* VHT */
 866                         rate->mcs = priv->tx_rate & 0x0F;
 867                         rate->flags |= RATE_INFO_FLAGS_VHT_MCS;
 868                 }
 869
 870                 if (tx_htinfo & (BIT(1) | BIT(0))) {
 871                         /* HT or VHT */
 872                         switch (tx_htinfo & (BIT(3) | BIT(2))) {
 873                         case 0:
 874                                 /* This will be 20MHz */
 875                                 break;
 876                         case (BIT(2)):
 877                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 878                                 break;
 879                         case (BIT(3)):
 880                                 rate->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 881                                 break;
 882                         case (BIT(3) | BIT(2)):
 883                                 rate->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 884                                 break;
 885                         }
 886
 887                         if (tx_htinfo & BIT(4))
 888                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 889
 890                         if ((priv->tx_rate >> 4) == 1)
 891                                 rate->nss = 2;
 892                         else
 893                                 rate->nss = 1;
 894                 }
 895         } else {
 896                 /*
 897                  * Bit 0 in tx_htinfo indicates that current Tx rate
 898                  * is 11n rate. Valid MCS index values for us are 0 to 15.
 899                  */
 900                 if ((tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 901                         rate->mcs = priv->tx_rate;
 902                         rate->flags |= RATE_INFO_FLAGS_MCS;
 903                         if (tx_htinfo & BIT(1))
 904                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 905                         if (tx_htinfo & BIT(2))
 906                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 907                 }
 908         }
 909 }
 910
 911 /*
 912  * This function dumps the station information on a buffer.
 913  *
 914  * The following information are shown -
 915  *      - Total bytes transmitted
 916  *      - Total bytes received
 917  *      - Total packets transmitted
 918  *      - Total packets received
 919  *      - Signal quality level
 920  *      - Transmission rate
 921  */
 922 static int
 923 mwifiex_dump_station_info(struct mwifiex_private *priv,
 924                           struct station_info *sinfo)
 925 {
 926         u32 rate;
 927
 928         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 929                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 930                         STATION_INFO_TX_BITRATE |
 931                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 932
 933         /* Get signal information from the firmware */
 934         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 935                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 936                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 937                 return -EFAULT;
 938         }
 939
 940         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 941                 dev_err(priv->adapter->dev, "getting data rate\n");
 942                 return -EFAULT;
 943         }
 944
 945         /* Get DTIM period information from firmware */
 946         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 947                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 948                               &priv->dtim_period);
 949
 950         mwifiex_parse_htinfo(priv, priv->tx_htinfo, &sinfo->txrate);
 951
 952         sinfo->signal_avg = priv->bcn_rssi_avg;
 953         sinfo->rx_bytes = priv->stats.rx_bytes;
 954         sinfo->tx_bytes = priv->stats.tx_bytes;
 955         sinfo->rx_packets = priv->stats.rx_packets;
 956         sinfo->tx_packets = priv->stats.tx_packets;
 957         sinfo->signal = priv->bcn_rssi_avg;
 958         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 959         sinfo->txrate.legacy = rate * 5;
 960
 961         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 962                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 963                 sinfo->bss_param.flags = 0;
 964                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 965                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 966                         sinfo->bss_param.flags |=
 967                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 968                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 969                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 970                         sinfo->bss_param.flags |=
 971                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 972                 sinfo->bss_param.dtim_period = priv->dtim_period;
 973                 sinfo->bss_param.beacon_interval =
 974                         priv->curr_bss_params.bss_descriptor.beacon_period;
 975         }
 976
 977         return 0;
 978 }
 979
 980 /*
 981  * CFG802.11 operation handler to get station information.
 982  *
 983  * This function only works in connected mode, and dumps the
 984  * requested station information, if available.
 985  */
 986 static int
 987 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 988                              u8 *mac, struct station_info *sinfo)
 989 {
 990         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 991
 992         if (!priv->media_connected)
 993                 return -ENOENT;
 994         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 995                 return -ENOENT;
 996
 997         return mwifiex_dump_station_info(priv, sinfo);
 998 }
 999
1000 /*
1001  * CFG802.11 operation handler to dump station information.
1002  */
1003 static int
1004 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
1005                               int idx, u8 *mac, struct station_info *sinfo)
1006 {
1007         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1008
1009         if (!priv->media_connected || idx)
1010                 return -ENOENT;
1011
1012         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
1013
1014         return mwifiex_dump_station_info(priv, sinfo);
1015 }
1016
1017 /* Supported rates to be advertised to the cfg80211 */
1018 static struct ieee80211_rate mwifiex_rates[] = {
1019         {.bitrate = 10, .hw_value = 2, },
1020         {.bitrate = 20, .hw_value = 4, },
1021         {.bitrate = 55, .hw_value = 11, },
1022         {.bitrate = 110, .hw_value = 22, },
1023         {.bitrate = 60, .hw_value = 12, },
1024         {.bitrate = 90, .hw_value = 18, },
1025         {.bitrate = 120, .hw_value = 24, },
1026         {.bitrate = 180, .hw_value = 36, },
1027         {.bitrate = 240, .hw_value = 48, },
1028         {.bitrate = 360, .hw_value = 72, },
1029         {.bitrate = 480, .hw_value = 96, },
1030         {.bitrate = 540, .hw_value = 108, },
1031 };
1032
1033 /* Channel definitions to be advertised to cfg80211 */
1034 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
1035         {.center_freq = 2412, .hw_value = 1, },
1036         {.center_freq = 2417, .hw_value = 2, },
1037         {.center_freq = 2422, .hw_value = 3, },
1038         {.center_freq = 2427, .hw_value = 4, },
1039         {.center_freq = 2432, .hw_value = 5, },
1040         {.center_freq = 2437, .hw_value = 6, },
1041         {.center_freq = 2442, .hw_value = 7, },
1042         {.center_freq = 2447, .hw_value = 8, },
1043         {.center_freq = 2452, .hw_value = 9, },
1044         {.center_freq = 2457, .hw_value = 10, },
1045         {.center_freq = 2462, .hw_value = 11, },
1046         {.center_freq = 2467, .hw_value = 12, },
1047         {.center_freq = 2472, .hw_value = 13, },
1048         {.center_freq = 2484, .hw_value = 14, },
1049 };
1050
1051 static struct ieee80211_supported_band mwifiex_band_2ghz = {
1052         .channels = mwifiex_channels_2ghz,
1053         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
1054         .bitrates = mwifiex_rates,
1055         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
1056 };
1057
1058 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
1059         {.center_freq = 5040, .hw_value = 8, },
1060         {.center_freq = 5060, .hw_value = 12, },
1061         {.center_freq = 5080, .hw_value = 16, },
1062         {.center_freq = 5170, .hw_value = 34, },
1063         {.center_freq = 5190, .hw_value = 38, },
1064         {.center_freq = 5210, .hw_value = 42, },
1065         {.center_freq = 5230, .hw_value = 46, },
1066         {.center_freq = 5180, .hw_value = 36, },
1067         {.center_freq = 5200, .hw_value = 40, },
1068         {.center_freq = 5220, .hw_value = 44, },
1069         {.center_freq = 5240, .hw_value = 48, },
1070         {.center_freq = 5260, .hw_value = 52, },
1071         {.center_freq = 5280, .hw_value = 56, },
1072         {.center_freq = 5300, .hw_value = 60, },
1073         {.center_freq = 5320, .hw_value = 64, },
1074         {.center_freq = 5500, .hw_value = 100, },
1075         {.center_freq = 5520, .hw_value = 104, },
1076         {.center_freq = 5540, .hw_value = 108, },
1077         {.center_freq = 5560, .hw_value = 112, },
1078         {.center_freq = 5580, .hw_value = 116, },
1079         {.center_freq = 5600, .hw_value = 120, },
1080         {.center_freq = 5620, .hw_value = 124, },
1081         {.center_freq = 5640, .hw_value = 128, },
1082         {.center_freq = 5660, .hw_value = 132, },
1083         {.center_freq = 5680, .hw_value = 136, },
1084         {.center_freq = 5700, .hw_value = 140, },
1085         {.center_freq = 5745, .hw_value = 149, },
1086         {.center_freq = 5765, .hw_value = 153, },
1087         {.center_freq = 5785, .hw_value = 157, },
1088         {.center_freq = 5805, .hw_value = 161, },
1089         {.center_freq = 5825, .hw_value = 165, },
1090 };
1091
1092 static struct ieee80211_supported_band mwifiex_band_5ghz = {
1093         .channels = mwifiex_channels_5ghz,
1094         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
1095         .bitrates = mwifiex_rates + 4,
1096         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
1097 };
1098
1099
1100 /* Supported crypto cipher suits to be advertised to cfg80211 */
1101 static const u32 mwifiex_cipher_suites[] = {
1102         WLAN_CIPHER_SUITE_WEP40,
1103         WLAN_CIPHER_SUITE_WEP104,
1104         WLAN_CIPHER_SUITE_TKIP,
1105         WLAN_CIPHER_SUITE_CCMP,
1106         WLAN_CIPHER_SUITE_AES_CMAC,
1107 };
1108
1109 /* Supported mgmt frame types to be advertised to cfg80211 */
1110 static const struct ieee80211_txrx_stypes
1111 mwifiex_mgmt_stypes[NUM_NL80211_IFTYPES] = {
1112         [NL80211_IFTYPE_STATION] = {
1113                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1114                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1115                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1116                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1117         },
1118         [NL80211_IFTYPE_AP] = {
1119                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1120                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1121                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1122                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1123         },
1124         [NL80211_IFTYPE_P2P_CLIENT] = {
1125                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1126                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1127                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1128                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1129         },
1130         [NL80211_IFTYPE_P2P_GO] = {
1131                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1132                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1133                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1134                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1135         },
1136 };
1137
1138 /*
1139  * CFG802.11 operation handler for setting bit rates.
1140  *
1141  * Function configures data rates to firmware using bitrate mask
1142  * provided by cfg80211.
1143  */
1144 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
1145                                 struct net_device *dev,
1146                                 const u8 *peer,
1147                                 const struct cfg80211_bitrate_mask *mask)
1148 {
1149         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1150         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
1151         enum ieee80211_band band;
1152
1153         if (!priv->media_connected) {
1154                 dev_err(priv->adapter->dev,
1155                         "Can not set Tx data rate in disconnected state\n");
1156                 return -EINVAL;
1157         }
1158
1159         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1160
1161         memset(bitmap_rates, 0, sizeof(bitmap_rates));
1162
1163         /* Fill HR/DSSS rates. */
1164         if (band == IEEE80211_BAND_2GHZ)
1165                 bitmap_rates[0] = mask->control[band].legacy & 0x000f;
1166
1167         /* Fill OFDM rates */
1168         if (band == IEEE80211_BAND_2GHZ)
1169                 bitmap_rates[1] = (mask->control[band].legacy & 0x0ff0) >> 4;
1170         else
1171                 bitmap_rates[1] = mask->control[band].legacy;
1172
1173         /* Fill MCS rates */
1174         bitmap_rates[2] = mask->control[band].mcs[0];
1175         if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2)
1176                 bitmap_rates[2] |= mask->control[band].mcs[1] << 8;
1177
1178         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
1179                                      HostCmd_ACT_GEN_SET, 0, bitmap_rates);
1180 }
1181
1182 /*
1183  * CFG802.11 operation handler for connection quality monitoring.
1184  *
1185  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
1186  * events to FW.
1187  */
1188 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
1189                                                 struct net_device *dev,
1190                                                 s32 rssi_thold, u32 rssi_hyst)
1191 {
1192         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1193         struct mwifiex_ds_misc_subsc_evt subsc_evt;
1194
1195         priv->cqm_rssi_thold = rssi_thold;
1196         priv->cqm_rssi_hyst = rssi_hyst;
1197
1198         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
1199         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
1200
1201         /* Subscribe/unsubscribe low and high rssi events */
1202         if (rssi_thold && rssi_hyst) {
1203                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
1204                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
1205                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
1206                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
1207                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
1208                 return mwifiex_send_cmd_sync(priv,
1209                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1210                                              0, 0, &subsc_evt);
1211         } else {
1212                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
1213                 return mwifiex_send_cmd_sync(priv,
1214                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1215                                              0, 0, &subsc_evt);
1216         }
1217
1218         return 0;
1219 }
1220
1221 /* cfg80211 operation handler for change_beacon.
1222  * Function retrieves and sets modified management IEs to FW.
1223  */
1224 static int mwifiex_cfg80211_change_beacon(struct wiphy *wiphy,
1225                                           struct net_device *dev,
1226                                           struct cfg80211_beacon_data *data)
1227 {
1228         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1229
1230         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) {
1231                 wiphy_err(wiphy, "%s: bss_type mismatched\n", __func__);
1232                 return -EINVAL;
1233         }
1234
1235         if (!priv->bss_started) {
1236                 wiphy_err(wiphy, "%s: bss not started\n", __func__);
1237                 return -EINVAL;
1238         }
1239
1240         if (mwifiex_set_mgmt_ies(priv, data)) {
1241                 wiphy_err(wiphy, "%s: setting mgmt ies failed\n", __func__);
1242                 return -EFAULT;
1243         }
1244
1245         return 0;
1246 }
1247
1248 /* cfg80211 operation handler for del_station.
1249  * Function deauthenticates station which value is provided in mac parameter.
1250  * If mac is NULL/broadcast, all stations in associated station list are
1251  * deauthenticated. If bss is not started or there are no stations in
1252  * associated stations list, no action is taken.
1253  */
1254 static int
1255 mwifiex_cfg80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1256                              u8 *mac)
1257 {
1258         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1259         struct mwifiex_sta_node *sta_node;
1260         unsigned long flags;
1261
1262         if (list_empty(&priv->sta_list) || !priv->bss_started)
1263                 return 0;
1264
1265         if (!mac || is_broadcast_ether_addr(mac)) {
1266                 wiphy_dbg(wiphy, "%s: NULL/broadcast mac address\n", __func__);
1267                 list_for_each_entry(sta_node, &priv->sta_list, list) {
1268                         if (mwifiex_send_cmd_sync(priv,
1269                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1270                                                   HostCmd_ACT_GEN_SET, 0,
1271                                                   sta_node->mac_addr))
1272                                 return -1;
1273                         mwifiex_uap_del_sta_data(priv, sta_node);
1274                 }
1275         } else {
1276                 wiphy_dbg(wiphy, "%s: mac address %pM\n", __func__, mac);
1277                 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1278                 sta_node = mwifiex_get_sta_entry(priv, mac);
1279                 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1280                 if (sta_node) {
1281                         if (mwifiex_send_cmd_sync(priv,
1282                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1283                                                   HostCmd_ACT_GEN_SET, 0,
1284                                                   sta_node->mac_addr))
1285                                 return -1;
1286                         mwifiex_uap_del_sta_data(priv, sta_node);
1287                 }
1288         }
1289
1290         return 0;
1291 }
1292
1293 static int
1294 mwifiex_cfg80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1295 {
1296         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1297         struct mwifiex_private *priv = mwifiex_get_priv(adapter,
1298                                                         MWIFIEX_BSS_ROLE_ANY);
1299         struct mwifiex_ds_ant_cfg ant_cfg;
1300
1301         if (!tx_ant || !rx_ant)
1302                 return -EOPNOTSUPP;
1303
1304         if (adapter->hw_dev_mcs_support != HT_STREAM_2X2) {
1305                 /* Not a MIMO chip. User should provide specific antenna number
1306                  * for Tx/Rx path or enable all antennas for diversity
1307                  */
1308                 if (tx_ant != rx_ant)
1309                         return -EOPNOTSUPP;
1310
1311                 if ((tx_ant & (tx_ant - 1)) &&
1312                     (tx_ant != BIT(adapter->number_of_antenna) - 1))
1313                         return -EOPNOTSUPP;
1314
1315                 if ((tx_ant == BIT(adapter->number_of_antenna) - 1) &&
1316                     (priv->adapter->number_of_antenna > 1)) {
1317                         tx_ant = RF_ANTENNA_AUTO;
1318                         rx_ant = RF_ANTENNA_AUTO;
1319                 }
1320         }
1321
1322         ant_cfg.tx_ant = tx_ant;
1323         ant_cfg.rx_ant = rx_ant;
1324
1325         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_RF_ANTENNA,
1326                                      HostCmd_ACT_GEN_SET, 0, &ant_cfg);
1327 }
1328
1329 /* cfg80211 operation handler for stop ap.
1330  * Function stops BSS running at uAP interface.
1331  */
1332 static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1333 {
1334         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1335
1336         if (mwifiex_del_mgmt_ies(priv))
1337                 wiphy_err(wiphy, "Failed to delete mgmt IEs!\n");
1338
1339         priv->ap_11n_enabled = 0;
1340
1341         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1342                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1343                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1344                 return -1;
1345         }
1346
1347         return 0;
1348 }
1349
1350 /* cfg80211 operation handler for start_ap.
1351  * Function sets beacon period, DTIM period, SSID and security into
1352  * AP config structure.
1353  * AP is configured with these settings and BSS is started.
1354  */
1355 static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
1356                                      struct net_device *dev,
1357                                      struct cfg80211_ap_settings *params)
1358 {
1359         struct mwifiex_uap_bss_param *bss_cfg;
1360         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1361         u8 config_bands = 0;
1362
1363         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
1364                 return -1;
1365         if (mwifiex_set_mgmt_ies(priv, &params->beacon))
1366                 return -1;
1367
1368         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
1369         if (!bss_cfg)
1370                 return -ENOMEM;
1371
1372         mwifiex_set_sys_config_invalid_data(bss_cfg);
1373
1374         if (params->beacon_interval)
1375                 bss_cfg->beacon_period = params->beacon_interval;
1376         if (params->dtim_period)
1377                 bss_cfg->dtim_period = params->dtim_period;
1378
1379         if (params->ssid && params->ssid_len) {
1380                 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
1381                 bss_cfg->ssid.ssid_len = params->ssid_len;
1382         }
1383
1384         switch (params->hidden_ssid) {
1385         case NL80211_HIDDEN_SSID_NOT_IN_USE:
1386                 bss_cfg->bcast_ssid_ctl = 1;
1387                 break;
1388         case NL80211_HIDDEN_SSID_ZERO_LEN:
1389                 bss_cfg->bcast_ssid_ctl = 0;
1390                 break;
1391         case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
1392                 /* firmware doesn't support this type of hidden SSID */
1393         default:
1394                 kfree(bss_cfg);
1395                 return -EINVAL;
1396         }
1397
1398         bss_cfg->channel = ieee80211_frequency_to_channel(
1399                                 params->chandef.chan->center_freq);
1400
1401         /* Set appropriate bands */
1402         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1403                 bss_cfg->band_cfg = BAND_CONFIG_BG;
1404                 config_bands = BAND_B | BAND_G;
1405
1406                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1407                         config_bands |= BAND_GN;
1408
1409                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1410                         config_bands |= BAND_GAC;
1411         } else {
1412                 bss_cfg->band_cfg = BAND_CONFIG_A;
1413                 config_bands = BAND_A;
1414
1415                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1416                         config_bands |= BAND_AN;
1417
1418                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1419                         config_bands |= BAND_AAC;
1420         }
1421
1422         if (!((config_bands | priv->adapter->fw_bands) &
1423               ~priv->adapter->fw_bands))
1424                 priv->adapter->config_bands = config_bands;
1425
1426         mwifiex_set_uap_rates(bss_cfg, params);
1427         mwifiex_send_domain_info_cmd_fw(wiphy);
1428
1429         if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
1430                 kfree(bss_cfg);
1431                 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
1432                 return -1;
1433         }
1434
1435         mwifiex_set_ht_params(priv, bss_cfg, params);
1436
1437         if (priv->adapter->is_hw_11ac_capable) {
1438                 mwifiex_set_vht_params(priv, bss_cfg, params);
1439                 mwifiex_set_vht_width(priv, params->chandef.width,
1440                                       priv->ap_11ac_enabled);
1441         }
1442
1443         if (priv->ap_11ac_enabled)
1444                 mwifiex_set_11ac_ba_params(priv);
1445         else
1446                 mwifiex_set_ba_params(priv);
1447
1448         mwifiex_set_wmm_params(priv, bss_cfg, params);
1449
1450         if (params->inactivity_timeout > 0) {
1451                 /* sta_ao_timer/ps_sta_ao_timer is in unit of 100ms */
1452                 bss_cfg->sta_ao_timer = 10 * params->inactivity_timeout;
1453                 bss_cfg->ps_sta_ao_timer = 10 * params->inactivity_timeout;
1454         }
1455
1456         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1457                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1458                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1459                 kfree(bss_cfg);
1460                 return -1;
1461         }
1462
1463         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
1464                                    HostCmd_ACT_GEN_SET,
1465                                    UAP_BSS_PARAMS_I, bss_cfg)) {
1466                 wiphy_err(wiphy, "Failed to set the SSID\n");
1467                 kfree(bss_cfg);
1468                 return -1;
1469         }
1470
1471         kfree(bss_cfg);
1472
1473         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
1474                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
1475                 wiphy_err(wiphy, "Failed to start the BSS\n");
1476                 return -1;
1477         }
1478
1479         if (priv->sec_info.wep_enabled)
1480                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1481         else
1482                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1483
1484         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1485                                   HostCmd_ACT_GEN_SET, 0,
1486                                   &priv->curr_pkt_filter))
1487                 return -1;
1488
1489         return 0;
1490 }
1491
1492 /*
1493  * CFG802.11 operation handler for disconnection request.
1494  *
1495  * This function does not work when there is already a disconnection
1496  * procedure going on.
1497  */
1498 static int
1499 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1500                             u16 reason_code)
1501 {
1502         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1503
1504         if (mwifiex_deauthenticate(priv, NULL))
1505                 return -EFAULT;
1506
1507         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1508                 " reason code %d\n", priv->cfg_bssid, reason_code);
1509
1510         memset(priv->cfg_bssid, 0, ETH_ALEN);
1511
1512         return 0;
1513 }
1514
1515 /*
1516  * This function informs the CFG802.11 subsystem of a new IBSS.
1517  *
1518  * The following information are sent to the CFG802.11 subsystem
1519  * to register the new IBSS. If we do not register the new IBSS,
1520  * a kernel panic will result.
1521  *      - SSID
1522  *      - SSID length
1523  *      - BSSID
1524  *      - Channel
1525  */
1526 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1527 {
1528         struct ieee80211_channel *chan;
1529         struct mwifiex_bss_info bss_info;
1530         struct cfg80211_bss *bss;
1531         int ie_len;
1532         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1533         enum ieee80211_band band;
1534
1535         if (mwifiex_get_bss_info(priv, &bss_info))
1536                 return -1;
1537
1538         ie_buf[0] = WLAN_EID_SSID;
1539         ie_buf[1] = bss_info.ssid.ssid_len;
1540
1541         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1542                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1543         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1544
1545         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1546         chan = __ieee80211_get_channel(priv->wdev->wiphy,
1547                         ieee80211_channel_to_frequency(bss_info.bss_chan,
1548                                                        band));
1549
1550         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1551                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1552                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
1553         cfg80211_put_bss(priv->wdev->wiphy, bss);
1554         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1555
1556         return 0;
1557 }
1558
1559 /*
1560  * This function connects with a BSS.
1561  *
1562  * This function handles both Infra and Ad-Hoc modes. It also performs
1563  * validity checking on the provided parameters, disconnects from the
1564  * current BSS (if any), sets up the association/scan parameters,
1565  * including security settings, and performs specific SSID scan before
1566  * trying to connect.
1567  *
1568  * For Infra mode, the function returns failure if the specified SSID
1569  * is not found in scan table. However, for Ad-Hoc mode, it can create
1570  * the IBSS if it does not exist. On successful completion in either case,
1571  * the function notifies the CFG802.11 subsystem of the new BSS connection.
1572  */
1573 static int
1574 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1575                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1576                        struct cfg80211_connect_params *sme, bool privacy)
1577 {
1578         struct cfg80211_ssid req_ssid;
1579         int ret, auth_type = 0;
1580         struct cfg80211_bss *bss = NULL;
1581         u8 is_scanning_required = 0;
1582
1583         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1584
1585         req_ssid.ssid_len = ssid_len;
1586         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1587                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1588                 return -EINVAL;
1589         }
1590
1591         memcpy(req_ssid.ssid, ssid, ssid_len);
1592         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1593                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1594                 return -EINVAL;
1595         }
1596
1597         /* disconnect before try to associate */
1598         mwifiex_deauthenticate(priv, NULL);
1599
1600         /* As this is new association, clear locally stored
1601          * keys and security related flags */
1602         priv->sec_info.wpa_enabled = false;
1603         priv->sec_info.wpa2_enabled = false;
1604         priv->wep_key_curr_index = 0;
1605         priv->sec_info.encryption_mode = 0;
1606         priv->sec_info.is_authtype_auto = 0;
1607         ret = mwifiex_set_encode(priv, NULL, NULL, 0, 0, NULL, 1);
1608
1609         if (mode == NL80211_IFTYPE_ADHOC) {
1610                 /* "privacy" is set only for ad-hoc mode */
1611                 if (privacy) {
1612                         /*
1613                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1614                          * the firmware can find a matching network from the
1615                          * scan. The cfg80211 does not give us the encryption
1616                          * mode at this stage so just setting it to WEP here.
1617                          */
1618                         priv->sec_info.encryption_mode =
1619                                         WLAN_CIPHER_SUITE_WEP104;
1620                         priv->sec_info.authentication_mode =
1621                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1622                 }
1623
1624                 goto done;
1625         }
1626
1627         /* Now handle infra mode. "sme" is valid for infra mode only */
1628         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1629                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1630                 priv->sec_info.is_authtype_auto = 1;
1631         } else {
1632                 auth_type = sme->auth_type;
1633         }
1634
1635         if (sme->crypto.n_ciphers_pairwise) {
1636                 priv->sec_info.encryption_mode =
1637                                                 sme->crypto.ciphers_pairwise[0];
1638                 priv->sec_info.authentication_mode = auth_type;
1639         }
1640
1641         if (sme->crypto.cipher_group) {
1642                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1643                 priv->sec_info.authentication_mode = auth_type;
1644         }
1645         if (sme->ie)
1646                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1647
1648         if (sme->key) {
1649                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1650                         dev_dbg(priv->adapter->dev,
1651                                 "info: setting wep encryption"
1652                                 " with key len %d\n", sme->key_len);
1653                         priv->wep_key_curr_index = sme->key_idx;
1654                         ret = mwifiex_set_encode(priv, NULL, sme->key,
1655                                                  sme->key_len, sme->key_idx,
1656                                                  NULL, 0);
1657                 }
1658         }
1659 done:
1660         /*
1661          * Scan entries are valid for some time (15 sec). So we can save one
1662          * active scan time if we just try cfg80211_get_bss first. If it fails
1663          * then request scan and cfg80211_get_bss() again for final output.
1664          */
1665         while (1) {
1666                 if (is_scanning_required) {
1667                         /* Do specific SSID scanning */
1668                         if (mwifiex_request_scan(priv, &req_ssid)) {
1669                                 dev_err(priv->adapter->dev, "scan error\n");
1670                                 return -EFAULT;
1671                         }
1672                 }
1673
1674                 /* Find the BSS we want using available scan results */
1675                 if (mode == NL80211_IFTYPE_ADHOC)
1676                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1677                                                bssid, ssid, ssid_len,
1678                                                WLAN_CAPABILITY_IBSS,
1679                                                WLAN_CAPABILITY_IBSS);
1680                 else
1681                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1682                                                bssid, ssid, ssid_len,
1683                                                WLAN_CAPABILITY_ESS,
1684                                                WLAN_CAPABILITY_ESS);
1685
1686                 if (!bss) {
1687                         if (is_scanning_required) {
1688                                 dev_warn(priv->adapter->dev,
1689                                          "assoc: requested bss not found in scan results\n");
1690                                 break;
1691                         }
1692                         is_scanning_required = 1;
1693                 } else {
1694                         dev_dbg(priv->adapter->dev,
1695                                 "info: trying to associate to '%s' bssid %pM\n",
1696                                 (char *) req_ssid.ssid, bss->bssid);
1697                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1698                         break;
1699                 }
1700         }
1701
1702         ret = mwifiex_bss_start(priv, bss, &req_ssid);
1703         if (ret)
1704                 return ret;
1705
1706         if (mode == NL80211_IFTYPE_ADHOC) {
1707                 /* Inform the BSS information to kernel, otherwise
1708                  * kernel will give a panic after successful assoc */
1709                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1710                         return -EFAULT;
1711         }
1712
1713         return ret;
1714 }
1715
1716 /*
1717  * CFG802.11 operation handler for association request.
1718  *
1719  * This function does not work when the current mode is set to Ad-Hoc, or
1720  * when there is already an association procedure going on. The given BSS
1721  * information is used to associate.
1722  */
1723 static int
1724 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1725                          struct cfg80211_connect_params *sme)
1726 {
1727         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1728         int ret;
1729
1730         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA) {
1731                 wiphy_err(wiphy,
1732                           "%s: reject infra assoc request in non-STA role\n",
1733                           dev->name);
1734                 return -EINVAL;
1735         }
1736
1737         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1738                   (char *) sme->ssid, sme->bssid);
1739
1740         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1741                                      priv->bss_mode, sme->channel, sme, 0);
1742         if (!ret) {
1743                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1744                                         NULL, 0, WLAN_STATUS_SUCCESS,
1745                                         GFP_KERNEL);
1746                 dev_dbg(priv->adapter->dev,
1747                         "info: associated to bssid %pM successfully\n",
1748                         priv->cfg_bssid);
1749         } else {
1750                 dev_dbg(priv->adapter->dev,
1751                         "info: association to bssid %pM failed\n",
1752                         priv->cfg_bssid);
1753                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1754
1755                 if (ret > 0)
1756                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1757                                                 NULL, 0, NULL, 0, ret,
1758                                                 GFP_KERNEL);
1759                 else
1760                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1761                                                 NULL, 0, NULL, 0,
1762                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1763                                                 GFP_KERNEL);
1764         }
1765
1766         return 0;
1767 }
1768
1769 /*
1770  * This function sets following parameters for ibss network.
1771  *  -  channel
1772  *  -  start band
1773  *  -  11n flag
1774  *  -  secondary channel offset
1775  */
1776 static int mwifiex_set_ibss_params(struct mwifiex_private *priv,
1777                                    struct cfg80211_ibss_params *params)
1778 {
1779         struct wiphy *wiphy = priv->wdev->wiphy;
1780         struct mwifiex_adapter *adapter = priv->adapter;
1781         int index = 0, i;
1782         u8 config_bands = 0;
1783
1784         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1785                 if (!params->basic_rates) {
1786                         config_bands = BAND_B | BAND_G;
1787                 } else {
1788                         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
1789                                 /*
1790                                  * Rates below 6 Mbps in the table are CCK
1791                                  * rates; 802.11b and from 6 they are OFDM;
1792                                  * 802.11G
1793                                  */
1794                                 if (mwifiex_rates[i].bitrate == 60) {
1795                                         index = 1 << i;
1796                                         break;
1797                                 }
1798                         }
1799
1800                         if (params->basic_rates < index) {
1801                                 config_bands = BAND_B;
1802                         } else {
1803                                 config_bands = BAND_G;
1804                                 if (params->basic_rates % index)
1805                                         config_bands |= BAND_B;
1806                         }
1807                 }
1808
1809                 if (cfg80211_get_chandef_type(&params->chandef) !=
1810                                                 NL80211_CHAN_NO_HT)
1811                         config_bands |= BAND_G | BAND_GN;
1812         } else {
1813                 if (cfg80211_get_chandef_type(&params->chandef) ==
1814                                                 NL80211_CHAN_NO_HT)
1815                         config_bands = BAND_A;
1816                 else
1817                         config_bands = BAND_AN | BAND_A;
1818         }
1819
1820         if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands)) {
1821                 adapter->config_bands = config_bands;
1822                 adapter->adhoc_start_band = config_bands;
1823
1824                 if ((config_bands & BAND_GN) || (config_bands & BAND_AN))
1825                         adapter->adhoc_11n_enabled = true;
1826                 else
1827                         adapter->adhoc_11n_enabled = false;
1828         }
1829
1830         adapter->sec_chan_offset =
1831                 mwifiex_chan_type_to_sec_chan_offset(
1832                         cfg80211_get_chandef_type(&params->chandef));
1833         priv->adhoc_channel = ieee80211_frequency_to_channel(
1834                                 params->chandef.chan->center_freq);
1835
1836         wiphy_dbg(wiphy, "info: set ibss band %d, chan %d, chan offset %d\n",
1837                   config_bands, priv->adhoc_channel, adapter->sec_chan_offset);
1838
1839         return 0;
1840 }
1841
1842 /*
1843  * CFG802.11 operation handler to join an IBSS.
1844  *
1845  * This function does not work in any mode other than Ad-Hoc, or if
1846  * a join operation is already in progress.
1847  */
1848 static int
1849 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1850                            struct cfg80211_ibss_params *params)
1851 {
1852         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1853         int ret = 0;
1854
1855         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1856                 wiphy_err(wiphy, "request to join ibss received "
1857                                 "when station is not in ibss mode\n");
1858                 goto done;
1859         }
1860
1861         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1862                   (char *) params->ssid, params->bssid);
1863
1864         mwifiex_set_ibss_params(priv, params);
1865
1866         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1867                                      params->bssid, priv->bss_mode,
1868                                      params->chandef.chan, NULL,
1869                                      params->privacy);
1870 done:
1871         if (!ret) {
1872                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1873                 dev_dbg(priv->adapter->dev,
1874                         "info: joined/created adhoc network with bssid"
1875                         " %pM successfully\n", priv->cfg_bssid);
1876         } else {
1877                 dev_dbg(priv->adapter->dev,
1878                         "info: failed creating/joining adhoc network\n");
1879         }
1880
1881         return ret;
1882 }
1883
1884 /*
1885  * CFG802.11 operation handler to leave an IBSS.
1886  *
1887  * This function does not work if a leave operation is
1888  * already in progress.
1889  */
1890 static int
1891 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1892 {
1893         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1894
1895         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1896                   priv->cfg_bssid);
1897         if (mwifiex_deauthenticate(priv, NULL))
1898                 return -EFAULT;
1899
1900         memset(priv->cfg_bssid, 0, ETH_ALEN);
1901
1902         return 0;
1903 }
1904
1905 /*
1906  * CFG802.11 operation handler for scan request.
1907  *
1908  * This function issues a scan request to the firmware based upon
1909  * the user specified scan configuration. On successfull completion,
1910  * it also informs the results.
1911  */
1912 static int
1913 mwifiex_cfg80211_scan(struct wiphy *wiphy,
1914                       struct cfg80211_scan_request *request)
1915 {
1916         struct net_device *dev = request->wdev->netdev;
1917         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1918         int i, offset, ret;
1919         struct ieee80211_channel *chan;
1920         struct ieee_types_header *ie;
1921         struct mwifiex_user_scan_cfg *user_scan_cfg;
1922
1923         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1924
1925         if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
1926             atomic_read(&priv->wmm.tx_pkts_queued) >=
1927             MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
1928                 dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
1929                 return -EBUSY;
1930         }
1931
1932         /* Block scan request if scan operation or scan cleanup when interface
1933          * is disabled is in process
1934          */
1935         if (priv->scan_request || priv->scan_aborting) {
1936                 dev_err(priv->adapter->dev, "cmd: Scan already in process..\n");
1937                 return -EBUSY;
1938         }
1939
1940         user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
1941         if (!user_scan_cfg)
1942                 return -ENOMEM;
1943
1944         priv->scan_request = request;
1945
1946         user_scan_cfg->num_ssids = request->n_ssids;
1947         user_scan_cfg->ssid_list = request->ssids;
1948
1949         if (request->ie && request->ie_len) {
1950                 offset = 0;
1951                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1952                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1953                                 continue;
1954                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1955                         ie = (struct ieee_types_header *)(request->ie + offset);
1956                         memcpy(&priv->vs_ie[i].ie, ie, sizeof(*ie) + ie->len);
1957                         offset += sizeof(*ie) + ie->len;
1958
1959                         if (offset >= request->ie_len)
1960                                 break;
1961                 }
1962         }
1963
1964         for (i = 0; i < min_t(u32, request->n_channels,
1965                               MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
1966                 chan = request->channels[i];
1967                 user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1968                 user_scan_cfg->chan_list[i].radio_type = chan->band;
1969
1970                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1971                         user_scan_cfg->chan_list[i].scan_type =
1972                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1973                 else
1974                         user_scan_cfg->chan_list[i].scan_type =
1975                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1976
1977                 user_scan_cfg->chan_list[i].scan_time = 0;
1978         }
1979
1980         ret = mwifiex_scan_networks(priv, user_scan_cfg);
1981         kfree(user_scan_cfg);
1982         if (ret) {
1983                 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1984                 priv->scan_aborting = false;
1985                 priv->scan_request = NULL;
1986                 return ret;
1987         }
1988
1989         if (request->ie && request->ie_len) {
1990                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1991                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1992                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1993                                 memset(&priv->vs_ie[i].ie, 0,
1994                                        MWIFIEX_MAX_VSIE_LEN);
1995                         }
1996                 }
1997         }
1998         return 0;
1999 }
2000
2001 static void mwifiex_setup_vht_caps(struct ieee80211_sta_vht_cap *vht_info,
2002                                    struct mwifiex_private *priv)
2003 {
2004         struct mwifiex_adapter *adapter = priv->adapter;
2005
2006         vht_info->vht_supported = true;
2007
2008         vht_info->cap = adapter->hw_dot_11ac_dev_cap;
2009         /* Update MCS support for VHT */
2010         vht_info->vht_mcs.rx_mcs_map = cpu_to_le16(
2011                                 adapter->hw_dot_11ac_mcs_support & 0xFFFF);
2012         vht_info->vht_mcs.rx_highest = 0;
2013         vht_info->vht_mcs.tx_mcs_map = cpu_to_le16(
2014                                 adapter->hw_dot_11ac_mcs_support >> 16);
2015         vht_info->vht_mcs.tx_highest = 0;
2016 }
2017
2018 /*
2019  * This function sets up the CFG802.11 specific HT capability fields
2020  * with default values.
2021  *
2022  * The following default values are set -
2023  *      - HT Supported = True
2024  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
2025  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
2026  *      - HT Capabilities supported by firmware
2027  *      - MCS information, Rx mask = 0xff
2028  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
2029  */
2030 static void
2031 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
2032                       struct mwifiex_private *priv)
2033 {
2034         int rx_mcs_supp;
2035         struct ieee80211_mcs_info mcs_set;
2036         u8 *mcs = (u8 *)&mcs_set;
2037         struct mwifiex_adapter *adapter = priv->adapter;
2038
2039         ht_info->ht_supported = true;
2040         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2041         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2042
2043         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
2044
2045         /* Fill HT capability information */
2046         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2047                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2048         else
2049                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2050
2051         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
2052                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
2053         else
2054                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
2055
2056         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
2057                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
2058         else
2059                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
2060
2061         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
2062                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
2063         else
2064                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
2065
2066         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
2067                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
2068         else
2069                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
2070
2071         if (ISSUPP_GREENFIELD(adapter->hw_dot_11n_dev_cap))
2072                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
2073         else
2074                 ht_info->cap &= ~IEEE80211_HT_CAP_GRN_FLD;
2075
2076         if (ISENABLED_40MHZ_INTOLERANT(adapter->hw_dot_11n_dev_cap))
2077                 ht_info->cap |= IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2078         else
2079                 ht_info->cap &= ~IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2080
2081         if (ISSUPP_RXLDPC(adapter->hw_dot_11n_dev_cap))
2082                 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
2083         else
2084                 ht_info->cap &= ~IEEE80211_HT_CAP_LDPC_CODING;
2085
2086         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
2087         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
2088
2089         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
2090         /* Set MCS for 1x1 */
2091         memset(mcs, 0xff, rx_mcs_supp);
2092         /* Clear all the other values */
2093         memset(&mcs[rx_mcs_supp], 0,
2094                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
2095         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
2096             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2097                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
2098                 SETHT_MCS32(mcs_set.rx_mask);
2099
2100         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
2101
2102         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2103 }
2104
2105 /*
2106  *  create a new virtual interface with the given name
2107  */
2108 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
2109                                               const char *name,
2110                                               enum nl80211_iftype type,
2111                                               u32 *flags,
2112                                               struct vif_params *params)
2113 {
2114         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2115         struct mwifiex_private *priv;
2116         struct net_device *dev;
2117         void *mdev_priv;
2118         struct wireless_dev *wdev;
2119
2120         if (!adapter)
2121                 return ERR_PTR(-EFAULT);
2122
2123         switch (type) {
2124         case NL80211_IFTYPE_UNSPECIFIED:
2125         case NL80211_IFTYPE_STATION:
2126         case NL80211_IFTYPE_ADHOC:
2127                 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2128                 if (priv->bss_mode) {
2129                         wiphy_err(wiphy,
2130                                   "cannot create multiple sta/adhoc ifaces\n");
2131                         return ERR_PTR(-EINVAL);
2132                 }
2133
2134                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2135                 if (!wdev)
2136                         return ERR_PTR(-ENOMEM);
2137
2138                 wdev->wiphy = wiphy;
2139                 priv->wdev = wdev;
2140                 wdev->iftype = NL80211_IFTYPE_STATION;
2141
2142                 if (type == NL80211_IFTYPE_UNSPECIFIED)
2143                         priv->bss_mode = NL80211_IFTYPE_STATION;
2144                 else
2145                         priv->bss_mode = type;
2146
2147                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
2148                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2149                 priv->bss_priority = 0;
2150                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2151                 priv->bss_num = 0;
2152
2153                 break;
2154         case NL80211_IFTYPE_AP:
2155                 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
2156
2157                 if (priv->bss_mode) {
2158                         wiphy_err(wiphy, "Can't create multiple AP interfaces");
2159                         return ERR_PTR(-EINVAL);
2160                 }
2161
2162                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2163                 if (!wdev)
2164                         return ERR_PTR(-ENOMEM);
2165
2166                 priv->wdev = wdev;
2167                 wdev->wiphy = wiphy;
2168                 wdev->iftype = NL80211_IFTYPE_AP;
2169
2170                 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
2171                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2172                 priv->bss_priority = 0;
2173                 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
2174                 priv->bss_started = 0;
2175                 priv->bss_num = 0;
2176                 priv->bss_mode = type;
2177
2178                 break;
2179         case NL80211_IFTYPE_P2P_CLIENT:
2180                 priv = adapter->priv[MWIFIEX_BSS_TYPE_P2P];
2181
2182                 if (priv->bss_mode) {
2183                         wiphy_err(wiphy, "Can't create multiple P2P ifaces");
2184                         return ERR_PTR(-EINVAL);
2185                 }
2186
2187                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2188                 if (!wdev)
2189                         return ERR_PTR(-ENOMEM);
2190
2191                 priv->wdev = wdev;
2192                 wdev->wiphy = wiphy;
2193
2194                 /* At start-up, wpa_supplicant tries to change the interface
2195                  * to NL80211_IFTYPE_STATION if it is not managed mode.
2196                  */
2197                 wdev->iftype = NL80211_IFTYPE_P2P_CLIENT;
2198                 priv->bss_mode = NL80211_IFTYPE_P2P_CLIENT;
2199
2200                 /* Setting bss_type to P2P tells firmware that this interface
2201                  * is receiving P2P peers found during find phase and doing
2202                  * action frame handshake.
2203                  */
2204                 priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
2205
2206                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2207                 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
2208                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2209                 priv->bss_started = 0;
2210                 priv->bss_num = 0;
2211
2212                 if (mwifiex_cfg80211_init_p2p_client(priv))
2213                         return ERR_PTR(-EFAULT);
2214
2215                 break;
2216         default:
2217                 wiphy_err(wiphy, "type not supported\n");
2218                 return ERR_PTR(-EINVAL);
2219         }
2220
2221         dev = alloc_netdev_mqs(sizeof(struct mwifiex_private *), name,
2222                                ether_setup, IEEE80211_NUM_ACS, 1);
2223         if (!dev) {
2224                 wiphy_err(wiphy, "no memory available for netdevice\n");
2225                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2226                 return ERR_PTR(-ENOMEM);
2227         }
2228
2229         mwifiex_init_priv_params(priv, dev);
2230         priv->netdev = dev;
2231
2232         mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
2233         if (adapter->is_hw_11ac_capable)
2234                 mwifiex_setup_vht_caps(
2235                         &wiphy->bands[IEEE80211_BAND_2GHZ]->vht_cap, priv);
2236
2237         if (adapter->config_bands & BAND_A)
2238                 mwifiex_setup_ht_caps(
2239                         &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
2240
2241         if ((adapter->config_bands & BAND_A) && adapter->is_hw_11ac_capable)
2242                 mwifiex_setup_vht_caps(
2243                         &wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap, priv);
2244
2245         dev_net_set(dev, wiphy_net(wiphy));
2246         dev->ieee80211_ptr = priv->wdev;
2247         dev->ieee80211_ptr->iftype = priv->bss_mode;
2248         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
2249         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
2250
2251         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
2252         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
2253         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
2254         dev->ethtool_ops = &mwifiex_ethtool_ops;
2255
2256         mdev_priv = netdev_priv(dev);
2257         *((unsigned long *) mdev_priv) = (unsigned long) priv;
2258
2259         SET_NETDEV_DEV(dev, adapter->dev);
2260
2261         /* Register network device */
2262         if (register_netdevice(dev)) {
2263                 wiphy_err(wiphy, "cannot register virtual network device\n");
2264                 free_netdev(dev);
2265                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2266                 return ERR_PTR(-EFAULT);
2267         }
2268
2269         sema_init(&priv->async_sem, 1);
2270
2271         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
2272
2273 #ifdef CONFIG_DEBUG_FS
2274         mwifiex_dev_debugfs_init(priv);
2275 #endif
2276         return wdev;
2277 }
2278 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
2279
2280 /*
2281  * del_virtual_intf: remove the virtual interface determined by dev
2282  */
2283 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
2284 {
2285         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
2286
2287 #ifdef CONFIG_DEBUG_FS
2288         mwifiex_dev_debugfs_remove(priv);
2289 #endif
2290
2291         mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
2292
2293         if (netif_carrier_ok(priv->netdev))
2294                 netif_carrier_off(priv->netdev);
2295
2296         if (wdev->netdev->reg_state == NETREG_REGISTERED)
2297                 unregister_netdevice(wdev->netdev);
2298
2299         /* Clear the priv in adapter */
2300         priv->netdev = NULL;
2301
2302         priv->media_connected = false;
2303
2304         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2305
2306         return 0;
2307 }
2308 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
2309
2310 #ifdef CONFIG_PM
2311 static bool
2312 mwifiex_is_pattern_supported(struct cfg80211_pkt_pattern *pat, s8 *byte_seq)
2313 {
2314         int j, k, valid_byte_cnt = 0;
2315         bool dont_care_byte = false;
2316
2317         for (j = 0; j < DIV_ROUND_UP(pat->pattern_len, 8); j++) {
2318                 for (k = 0; k < 8; k++) {
2319                         if (pat->mask[j] & 1 << k) {
2320                                 memcpy(byte_seq + valid_byte_cnt,
2321                                        &pat->pattern[j * 8 + k], 1);
2322                                 valid_byte_cnt++;
2323                                 if (dont_care_byte)
2324                                         return false;
2325                         } else {
2326                                 if (valid_byte_cnt)
2327                                         dont_care_byte = true;
2328                         }
2329
2330                         if (valid_byte_cnt > MAX_BYTESEQ)
2331                                 return false;
2332                 }
2333         }
2334
2335         byte_seq[MAX_BYTESEQ] = valid_byte_cnt;
2336
2337         return true;
2338 }
2339
2340 static int mwifiex_cfg80211_suspend(struct wiphy *wiphy,
2341                                     struct cfg80211_wowlan *wowlan)
2342 {
2343         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2344         struct mwifiex_ds_mef_cfg mef_cfg;
2345         struct mwifiex_mef_entry *mef_entry;
2346         int i, filt_num = 0, ret;
2347         bool first_pat = true;
2348         u8 byte_seq[MAX_BYTESEQ + 1];
2349         const u8 ipv4_mc_mac[] = {0x33, 0x33};
2350         const u8 ipv6_mc_mac[] = {0x01, 0x00, 0x5e};
2351         struct mwifiex_private *priv =
2352                         mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
2353
2354         if (!wowlan) {
2355                 dev_warn(adapter->dev, "None of the WOWLAN triggers enabled\n");
2356                 return 0;
2357         }
2358
2359         if (!priv->media_connected) {
2360                 dev_warn(adapter->dev,
2361                          "Can not configure WOWLAN in disconnected state\n");
2362                 return 0;
2363         }
2364
2365         mef_entry = kzalloc(sizeof(*mef_entry), GFP_KERNEL);
2366         if (!mef_entry)
2367                 return -ENOMEM;
2368
2369         memset(&mef_cfg, 0, sizeof(mef_cfg));
2370         mef_cfg.num_entries = 1;
2371         mef_cfg.mef_entry = mef_entry;
2372         mef_entry->mode = MEF_MODE_HOST_SLEEP;
2373         mef_entry->action = MEF_ACTION_ALLOW_AND_WAKEUP_HOST;
2374
2375         for (i = 0; i < wowlan->n_patterns; i++) {
2376                 memset(byte_seq, 0, sizeof(byte_seq));
2377                 if (!mwifiex_is_pattern_supported(&wowlan->patterns[i],
2378                                                   byte_seq)) {
2379                         wiphy_err(wiphy, "Pattern not supported\n");
2380                         kfree(mef_entry);
2381                         return -EOPNOTSUPP;
2382                 }
2383
2384                 if (!wowlan->patterns[i].pkt_offset) {
2385                         if (!(byte_seq[0] & 0x01) &&
2386                             (byte_seq[MAX_BYTESEQ] == 1)) {
2387                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2388                                 continue;
2389                         } else if (is_broadcast_ether_addr(byte_seq)) {
2390                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_BROADCAST;
2391                                 continue;
2392                         } else if ((!memcmp(byte_seq, ipv4_mc_mac, 2) &&
2393                                     (byte_seq[MAX_BYTESEQ] == 2)) ||
2394                                    (!memcmp(byte_seq, ipv6_mc_mac, 3) &&
2395                                     (byte_seq[MAX_BYTESEQ] == 3))) {
2396                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_MULTICAST;
2397                                 continue;
2398                         }
2399                 }
2400
2401                 mef_entry->filter[filt_num].repeat = 1;
2402                 mef_entry->filter[filt_num].offset =
2403                                                 wowlan->patterns[i].pkt_offset;
2404                 memcpy(mef_entry->filter[filt_num].byte_seq, byte_seq,
2405                        sizeof(byte_seq));
2406                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2407
2408                 if (first_pat)
2409                         first_pat = false;
2410                 else
2411                         mef_entry->filter[filt_num].filt_action = TYPE_AND;
2412
2413                 filt_num++;
2414         }
2415
2416         if (wowlan->magic_pkt) {
2417                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2418                 mef_entry->filter[filt_num].repeat = 16;
2419                 memcpy(mef_entry->filter[filt_num].byte_seq, priv->curr_addr,
2420                        ETH_ALEN);
2421                 mef_entry->filter[filt_num].byte_seq[MAX_BYTESEQ] = ETH_ALEN;
2422                 mef_entry->filter[filt_num].offset = 14;
2423                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2424                 if (filt_num)
2425                         mef_entry->filter[filt_num].filt_action = TYPE_OR;
2426         }
2427
2428         if (!mef_cfg.criteria)
2429                 mef_cfg.criteria = MWIFIEX_CRITERIA_BROADCAST |
2430                                    MWIFIEX_CRITERIA_UNICAST |
2431                                    MWIFIEX_CRITERIA_MULTICAST;
2432
2433         ret =  mwifiex_send_cmd_sync(priv, HostCmd_CMD_MEF_CFG,
2434                                      HostCmd_ACT_GEN_SET, 0,
2435                                      &mef_cfg);
2436
2437         kfree(mef_entry);
2438         return ret;
2439 }
2440
2441 static int mwifiex_cfg80211_resume(struct wiphy *wiphy)
2442 {
2443         return 0;
2444 }
2445
2446 static void mwifiex_cfg80211_set_wakeup(struct wiphy *wiphy,
2447                                        bool enabled)
2448 {
2449         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2450
2451         device_set_wakeup_enable(adapter->dev, enabled);
2452 }
2453 #endif
2454
2455 /* station cfg80211 operations */
2456 static struct cfg80211_ops mwifiex_cfg80211_ops = {
2457         .add_virtual_intf = mwifiex_add_virtual_intf,
2458         .del_virtual_intf = mwifiex_del_virtual_intf,
2459         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
2460         .scan = mwifiex_cfg80211_scan,
2461         .connect = mwifiex_cfg80211_connect,
2462         .disconnect = mwifiex_cfg80211_disconnect,
2463         .get_station = mwifiex_cfg80211_get_station,
2464         .dump_station = mwifiex_cfg80211_dump_station,
2465         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
2466         .join_ibss = mwifiex_cfg80211_join_ibss,
2467         .leave_ibss = mwifiex_cfg80211_leave_ibss,
2468         .add_key = mwifiex_cfg80211_add_key,
2469         .del_key = mwifiex_cfg80211_del_key,
2470         .mgmt_tx = mwifiex_cfg80211_mgmt_tx,
2471         .mgmt_frame_register = mwifiex_cfg80211_mgmt_frame_register,
2472         .remain_on_channel = mwifiex_cfg80211_remain_on_channel,
2473         .cancel_remain_on_channel = mwifiex_cfg80211_cancel_remain_on_channel,
2474         .set_default_key = mwifiex_cfg80211_set_default_key,
2475         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
2476         .set_tx_power = mwifiex_cfg80211_set_tx_power,
2477         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
2478         .start_ap = mwifiex_cfg80211_start_ap,
2479         .stop_ap = mwifiex_cfg80211_stop_ap,
2480         .change_beacon = mwifiex_cfg80211_change_beacon,
2481         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
2482         .set_antenna = mwifiex_cfg80211_set_antenna,
2483         .del_station = mwifiex_cfg80211_del_station,
2484 #ifdef CONFIG_PM
2485         .suspend = mwifiex_cfg80211_suspend,
2486         .resume = mwifiex_cfg80211_resume,
2487         .set_wakeup = mwifiex_cfg80211_set_wakeup,
2488 #endif
2489 };
2490
2491 #ifdef CONFIG_PM
2492 static const struct wiphy_wowlan_support mwifiex_wowlan_support = {
2493         .flags = WIPHY_WOWLAN_MAGIC_PKT,
2494         .n_patterns = MWIFIEX_MAX_FILTERS,
2495         .pattern_min_len = 1,
2496         .pattern_max_len = MWIFIEX_MAX_PATTERN_LEN,
2497         .max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
2498 };
2499 #endif
2500
2501 static bool mwifiex_is_valid_alpha2(const char *alpha2)
2502 {
2503         if (!alpha2 || strlen(alpha2) != 2)
2504                 return false;
2505
2506         if (isalpha(alpha2[0]) && isalpha(alpha2[1]))
2507                 return true;
2508
2509         return false;
2510 }
2511
2512 /*
2513  * This function registers the device with CFG802.11 subsystem.
2514  *
2515  * The function creates the wireless device/wiphy, populates it with
2516  * default parameters and handler function pointers, and finally
2517  * registers the device.
2518  */
2519
2520 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
2521 {
2522         int ret;
2523         void *wdev_priv;
2524         struct wiphy *wiphy;
2525         struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2526         u8 *country_code;
2527
2528         /* create a new wiphy for use with cfg80211 */
2529         wiphy = wiphy_new(&mwifiex_cfg80211_ops,
2530                           sizeof(struct mwifiex_adapter *));
2531         if (!wiphy) {
2532                 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
2533                 return -ENOMEM;
2534         }
2535         wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
2536         wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
2537         wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
2538         wiphy->max_remain_on_channel_duration = 5000;
2539         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2540                                  BIT(NL80211_IFTYPE_ADHOC) |
2541                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2542                                  BIT(NL80211_IFTYPE_P2P_GO) |
2543                                  BIT(NL80211_IFTYPE_AP);
2544
2545         wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
2546         if (adapter->config_bands & BAND_A)
2547                 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
2548         else
2549                 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
2550
2551         wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
2552         wiphy->n_iface_combinations = 1;
2553
2554         /* Initialize cipher suits */
2555         wiphy->cipher_suites = mwifiex_cipher_suites;
2556         wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
2557
2558         memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
2559         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2560         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
2561                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
2562                         WIPHY_FLAG_AP_UAPSD |
2563                         WIPHY_FLAG_CUSTOM_REGULATORY |
2564                         WIPHY_FLAG_STRICT_REGULATORY |
2565                         WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2566
2567         wiphy_apply_custom_regulatory(wiphy, &mwifiex_world_regdom_custom);
2568
2569 #ifdef CONFIG_PM
2570         wiphy->wowlan = &mwifiex_wowlan_support;
2571 #endif
2572
2573         wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
2574                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
2575                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
2576
2577         wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
2578         wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
2579
2580         wiphy->features |= NL80211_FEATURE_HT_IBSS |
2581                            NL80211_FEATURE_INACTIVITY_TIMER |
2582                            NL80211_FEATURE_LOW_PRIORITY_SCAN;
2583
2584         /* Reserve space for mwifiex specific private data for BSS */
2585         wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
2586
2587         wiphy->reg_notifier = mwifiex_reg_notifier;
2588
2589         /* Set struct mwifiex_adapter pointer in wiphy_priv */
2590         wdev_priv = wiphy_priv(wiphy);
2591         *(unsigned long *)wdev_priv = (unsigned long)adapter;
2592
2593         set_wiphy_dev(wiphy, priv->adapter->dev);
2594
2595         ret = wiphy_register(wiphy);
2596         if (ret < 0) {
2597                 dev_err(adapter->dev,
2598                         "%s: wiphy_register failed: %d\n", __func__, ret);
2599                 wiphy_free(wiphy);
2600                 return ret;
2601         }
2602
2603         if (reg_alpha2 && mwifiex_is_valid_alpha2(reg_alpha2)) {
2604                 wiphy_info(wiphy, "driver hint alpha2: %2.2s\n", reg_alpha2);
2605                 regulatory_hint(wiphy, reg_alpha2);
2606         } else {
2607                 country_code = mwifiex_11d_code_2_region(adapter->region_code);
2608                 if (country_code)
2609                         wiphy_info(wiphy, "ignoring F/W country code %2.2s\n",
2610                                    country_code);
2611         }
2612
2613         adapter->wiphy = wiphy;
2614         return ret;
2615 }