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         },
  30         {
  31                 .max = 1, .types = BIT(NL80211_IFTYPE_AP),
  32         },
  33 };
  34
  35 static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
  36         .limits = mwifiex_ap_sta_limits,
  37         .num_different_channels = 1,
  38         .n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
  39         .max_interfaces = MWIFIEX_MAX_BSS_NUM,
  40         .beacon_int_infra_match = true,
  41 };
  42
  43 static const struct ieee80211_regdomain mwifiex_world_regdom_custom = {
  44         .n_reg_rules = 7,
  45         .alpha2 =  "99",
  46         .reg_rules = {
  47                 /* Channel 1 - 11 */
  48                 REG_RULE(2412-10, 2462+10, 40, 3, 20, 0),
  49                 /* Channel 12 - 13 */
  50                 REG_RULE(2467-10, 2472+10, 20, 3, 20,
  51                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  52                 /* Channel 14 */
  53                 REG_RULE(2484-10, 2484+10, 20, 3, 20,
  54                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  55                          NL80211_RRF_NO_OFDM),
  56                 /* Channel 36 - 48 */
  57                 REG_RULE(5180-10, 5240+10, 40, 3, 20,
  58                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  59                 /* Channel 149 - 165 */
  60                 REG_RULE(5745-10, 5825+10, 40, 3, 20,
  61                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
  62                 /* Channel 52 - 64 */
  63                 REG_RULE(5260-10, 5320+10, 40, 3, 30,
  64                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  65                          NL80211_RRF_DFS),
  66                 /* Channel 100 - 140 */
  67                 REG_RULE(5500-10, 5700+10, 40, 3, 30,
  68                          NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS |
  69                          NL80211_RRF_DFS),
  70         }
  71 };
  72
  73 /*
  74  * This function maps the nl802.11 channel type into driver channel type.
  75  *
  76  * The mapping is as follows -
  77  *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  78  *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  79  *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
  80  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  81  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  82  */
  83 u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type)
  84 {
  85         switch (chan_type) {
  86         case NL80211_CHAN_NO_HT:
  87         case NL80211_CHAN_HT20:
  88                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  89         case NL80211_CHAN_HT40PLUS:
  90                 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
  91         case NL80211_CHAN_HT40MINUS:
  92                 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
  93         default:
  94                 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
  95         }
  96 }
  97
  98 /*
  99  * This function checks whether WEP is set.
 100  */
 101 static int
 102 mwifiex_is_alg_wep(u32 cipher)
 103 {
 104         switch (cipher) {
 105         case WLAN_CIPHER_SUITE_WEP40:
 106         case WLAN_CIPHER_SUITE_WEP104:
 107                 return 1;
 108         default:
 109                 break;
 110         }
 111
 112         return 0;
 113 }
 114
 115 /*
 116  * This function retrieves the private structure from kernel wiphy structure.
 117  */
 118 static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
 119 {
 120         return (void *) (*(unsigned long *) wiphy_priv(wiphy));
 121 }
 122
 123 /*
 124  * CFG802.11 operation handler to delete a network key.
 125  */
 126 static int
 127 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
 128                          u8 key_index, bool pairwise, const u8 *mac_addr)
 129 {
 130         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 131         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 132         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 133
 134         if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index, peer_mac, 1)) {
 135                 wiphy_err(wiphy, "deleting the crypto keys\n");
 136                 return -EFAULT;
 137         }
 138
 139         wiphy_dbg(wiphy, "info: crypto keys deleted\n");
 140         return 0;
 141 }
 142
 143 /*
 144  * This function forms an skb for management frame.
 145  */
 146 static int
 147 mwifiex_form_mgmt_frame(struct sk_buff *skb, const u8 *buf, size_t len)
 148 {
 149         u8 addr[ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 150         u16 pkt_len;
 151         u32 tx_control = 0, pkt_type = PKT_TYPE_MGMT;
 152         struct timeval tv;
 153
 154         pkt_len = len + ETH_ALEN;
 155
 156         skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN +
 157                     MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
 158         memcpy(skb_push(skb, sizeof(pkt_len)), &pkt_len, sizeof(pkt_len));
 159
 160         memcpy(skb_push(skb, sizeof(tx_control)),
 161                &tx_control, sizeof(tx_control));
 162
 163         memcpy(skb_push(skb, sizeof(pkt_type)), &pkt_type, sizeof(pkt_type));
 164
 165         /* Add packet data and address4 */
 166         memcpy(skb_put(skb, sizeof(struct ieee80211_hdr_3addr)), buf,
 167                sizeof(struct ieee80211_hdr_3addr));
 168         memcpy(skb_put(skb, ETH_ALEN), addr, ETH_ALEN);
 169         memcpy(skb_put(skb, len - sizeof(struct ieee80211_hdr_3addr)),
 170                buf + sizeof(struct ieee80211_hdr_3addr),
 171                len - sizeof(struct ieee80211_hdr_3addr));
 172
 173         skb->priority = LOW_PRIO_TID;
 174         do_gettimeofday(&tv);
 175         skb->tstamp = timeval_to_ktime(tv);
 176
 177         return 0;
 178 }
 179
 180 /*
 181  * CFG802.11 operation handler to transmit a management frame.
 182  */
 183 static int
 184 mwifiex_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 185                          struct ieee80211_channel *chan, bool offchan,
 186                          unsigned int wait, const u8 *buf, size_t len,
 187                          bool no_cck, bool dont_wait_for_ack, u64 *cookie)
 188 {
 189         struct sk_buff *skb;
 190         u16 pkt_len;
 191         const struct ieee80211_mgmt *mgmt;
 192         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 193
 194         if (!buf || !len) {
 195                 wiphy_err(wiphy, "invalid buffer and length\n");
 196                 return -EFAULT;
 197         }
 198
 199         mgmt = (const struct ieee80211_mgmt *)buf;
 200         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA &&
 201             ieee80211_is_probe_resp(mgmt->frame_control)) {
 202                 /* Since we support offload probe resp, we need to skip probe
 203                  * resp in AP or GO mode */
 204                 wiphy_dbg(wiphy,
 205                           "info: skip to send probe resp in AP or GO mode\n");
 206                 return 0;
 207         }
 208
 209         pkt_len = len + ETH_ALEN;
 210         skb = dev_alloc_skb(MWIFIEX_MIN_DATA_HEADER_LEN +
 211                             MWIFIEX_MGMT_FRAME_HEADER_SIZE +
 212                             pkt_len + sizeof(pkt_len));
 213
 214         if (!skb) {
 215                 wiphy_err(wiphy, "allocate skb failed for management frame\n");
 216                 return -ENOMEM;
 217         }
 218
 219         mwifiex_form_mgmt_frame(skb, buf, len);
 220         mwifiex_queue_tx_pkt(priv, skb);
 221
 222         *cookie = prandom_u32() | 1;
 223         cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true, GFP_ATOMIC);
 224
 225         wiphy_dbg(wiphy, "info: management frame transmitted\n");
 226         return 0;
 227 }
 228
 229 /*
 230  * CFG802.11 operation handler to register a mgmt frame.
 231  */
 232 static void
 233 mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
 234                                      struct wireless_dev *wdev,
 235                                      u16 frame_type, bool reg)
 236 {
 237         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 238
 239         if (reg)
 240                 priv->mgmt_frame_mask |= BIT(frame_type >> 4);
 241         else
 242                 priv->mgmt_frame_mask &= ~BIT(frame_type >> 4);
 243
 244         mwifiex_send_cmd_async(priv, HostCmd_CMD_MGMT_FRAME_REG,
 245                                HostCmd_ACT_GEN_SET, 0, &priv->mgmt_frame_mask);
 246
 247         wiphy_dbg(wiphy, "info: mgmt frame registered\n");
 248 }
 249
 250 /*
 251  * CFG802.11 operation handler to remain on channel.
 252  */
 253 static int
 254 mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
 255                                    struct wireless_dev *wdev,
 256                                    struct ieee80211_channel *chan,
 257                                    unsigned int duration, u64 *cookie)
 258 {
 259         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 260         int ret;
 261
 262         if (!chan || !cookie) {
 263                 wiphy_err(wiphy, "Invalid parameter for ROC\n");
 264                 return -EINVAL;
 265         }
 266
 267         if (priv->roc_cfg.cookie) {
 268                 wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llu\n",
 269                           priv->roc_cfg.cookie);
 270                 return -EBUSY;
 271         }
 272
 273         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_SET, chan,
 274                                          duration);
 275
 276         if (!ret) {
 277                 *cookie = prandom_u32() | 1;
 278                 priv->roc_cfg.cookie = *cookie;
 279                 priv->roc_cfg.chan = *chan;
 280
 281                 cfg80211_ready_on_channel(wdev, *cookie, chan,
 282                                           duration, GFP_ATOMIC);
 283
 284                 wiphy_dbg(wiphy, "info: ROC, cookie = 0x%llx\n", *cookie);
 285         }
 286
 287         return ret;
 288 }
 289
 290 /*
 291  * CFG802.11 operation handler to cancel remain on channel.
 292  */
 293 static int
 294 mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
 295                                           struct wireless_dev *wdev, u64 cookie)
 296 {
 297         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
 298         int ret;
 299
 300         if (cookie != priv->roc_cfg.cookie)
 301                 return -ENOENT;
 302
 303         ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_REMOVE,
 304                                          &priv->roc_cfg.chan, 0);
 305
 306         if (!ret) {
 307                 cfg80211_remain_on_channel_expired(wdev, cookie,
 308                                                    &priv->roc_cfg.chan,
 309                                                    GFP_ATOMIC);
 310
 311                 memset(&priv->roc_cfg, 0, sizeof(struct mwifiex_roc_cfg));
 312
 313                 wiphy_dbg(wiphy, "info: cancel ROC, cookie = 0x%llx\n", cookie);
 314         }
 315
 316         return ret;
 317 }
 318
 319 /*
 320  * CFG802.11 operation handler to set Tx power.
 321  */
 322 static int
 323 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
 324                               struct wireless_dev *wdev,
 325                               enum nl80211_tx_power_setting type,
 326                               int mbm)
 327 {
 328         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 329         struct mwifiex_private *priv;
 330         struct mwifiex_power_cfg power_cfg;
 331         int dbm = MBM_TO_DBM(mbm);
 332
 333         if (type == NL80211_TX_POWER_FIXED) {
 334                 power_cfg.is_power_auto = 0;
 335                 power_cfg.power_level = dbm;
 336         } else {
 337                 power_cfg.is_power_auto = 1;
 338         }
 339
 340         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 341
 342         return mwifiex_set_tx_power(priv, &power_cfg);
 343 }
 344
 345 /*
 346  * CFG802.11 operation handler to set Power Save option.
 347  *
 348  * The timeout value, if provided, is currently ignored.
 349  */
 350 static int
 351 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 352                                 struct net_device *dev,
 353                                 bool enabled, int timeout)
 354 {
 355         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 356         u32 ps_mode;
 357
 358         if (timeout)
 359                 wiphy_dbg(wiphy,
 360                           "info: ignore timeout value for IEEE Power Save\n");
 361
 362         ps_mode = enabled;
 363
 364         return mwifiex_drv_set_power(priv, &ps_mode);
 365 }
 366
 367 /*
 368  * CFG802.11 operation handler to set the default network key.
 369  */
 370 static int
 371 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 372                                  u8 key_index, bool unicast,
 373                                  bool multicast)
 374 {
 375         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 376
 377         /* Return if WEP key not configured */
 378         if (!priv->sec_info.wep_enabled)
 379                 return 0;
 380
 381         if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
 382                 priv->wep_key_curr_index = key_index;
 383         } else if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index,
 384                                       NULL, 0)) {
 385                 wiphy_err(wiphy, "set default Tx key index\n");
 386                 return -EFAULT;
 387         }
 388
 389         return 0;
 390 }
 391
 392 /*
 393  * CFG802.11 operation handler to add a network key.
 394  */
 395 static int
 396 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
 397                          u8 key_index, bool pairwise, const u8 *mac_addr,
 398                          struct key_params *params)
 399 {
 400         struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
 401         struct mwifiex_wep_key *wep_key;
 402         const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 403         const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
 404
 405         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP &&
 406             (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 407              params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 408                 if (params->key && params->key_len) {
 409                         wep_key = &priv->wep_key[key_index];
 410                         memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 411                         memcpy(wep_key->key_material, params->key,
 412                                params->key_len);
 413                         wep_key->key_index = key_index;
 414                         wep_key->key_length = params->key_len;
 415                         priv->sec_info.wep_enabled = 1;
 416                 }
 417                 return 0;
 418         }
 419
 420         if (mwifiex_set_encode(priv, params, params->key, params->key_len,
 421                                key_index, peer_mac, 0)) {
 422                 wiphy_err(wiphy, "crypto keys added\n");
 423                 return -EFAULT;
 424         }
 425
 426         return 0;
 427 }
 428
 429 /*
 430  * This function sends domain information to the firmware.
 431  *
 432  * The following information are passed to the firmware -
 433  *      - Country codes
 434  *      - Sub bands (first channel, number of channels, maximum Tx power)
 435  */
 436 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
 437 {
 438         u8 no_of_triplet = 0;
 439         struct ieee80211_country_ie_triplet *t;
 440         u8 no_of_parsed_chan = 0;
 441         u8 first_chan = 0, next_chan = 0, max_pwr = 0;
 442         u8 i, flag = 0;
 443         enum ieee80211_band band;
 444         struct ieee80211_supported_band *sband;
 445         struct ieee80211_channel *ch;
 446         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 447         struct mwifiex_private *priv;
 448         struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
 449
 450         /* Set country code */
 451         domain_info->country_code[0] = adapter->country_code[0];
 452         domain_info->country_code[1] = adapter->country_code[1];
 453         domain_info->country_code[2] = ' ';
 454
 455         band = mwifiex_band_to_radio_type(adapter->config_bands);
 456         if (!wiphy->bands[band]) {
 457                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 458                 return -1;
 459         }
 460
 461         sband = wiphy->bands[band];
 462
 463         for (i = 0; i < sband->n_channels ; i++) {
 464                 ch = &sband->channels[i];
 465                 if (ch->flags & IEEE80211_CHAN_DISABLED)
 466                         continue;
 467
 468                 if (!flag) {
 469                         flag = 1;
 470                         first_chan = (u32) ch->hw_value;
 471                         next_chan = first_chan;
 472                         max_pwr = ch->max_power;
 473                         no_of_parsed_chan = 1;
 474                         continue;
 475                 }
 476
 477                 if (ch->hw_value == next_chan + 1 &&
 478                     ch->max_power == max_pwr) {
 479                         next_chan++;
 480                         no_of_parsed_chan++;
 481                 } else {
 482                         t = &domain_info->triplet[no_of_triplet];
 483                         t->chans.first_channel = first_chan;
 484                         t->chans.num_channels = no_of_parsed_chan;
 485                         t->chans.max_power = max_pwr;
 486                         no_of_triplet++;
 487                         first_chan = (u32) ch->hw_value;
 488                         next_chan = first_chan;
 489                         max_pwr = ch->max_power;
 490                         no_of_parsed_chan = 1;
 491                 }
 492         }
 493
 494         if (flag) {
 495                 t = &domain_info->triplet[no_of_triplet];
 496                 t->chans.first_channel = first_chan;
 497                 t->chans.num_channels = no_of_parsed_chan;
 498                 t->chans.max_power = max_pwr;
 499                 no_of_triplet++;
 500         }
 501
 502         domain_info->no_of_triplet = no_of_triplet;
 503
 504         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 505
 506         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 507                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 508                 wiphy_err(wiphy, "11D: setting domain info in FW\n");
 509                 return -1;
 510         }
 511
 512         return 0;
 513 }
 514
 515 /*
 516  * CFG802.11 regulatory domain callback function.
 517  *
 518  * This function is called when the regulatory domain is changed due to the
 519  * following reasons -
 520  *      - Set by driver
 521  *      - Set by system core
 522  *      - Set by user
 523  *      - Set bt Country IE
 524  */
 525 static void mwifiex_reg_notifier(struct wiphy *wiphy,
 526                                  struct regulatory_request *request)
 527 {
 528         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 529
 530         wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
 531                   request->alpha2[0], request->alpha2[1]);
 532
 533         memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
 534
 535         switch (request->initiator) {
 536         case NL80211_REGDOM_SET_BY_DRIVER:
 537         case NL80211_REGDOM_SET_BY_CORE:
 538         case NL80211_REGDOM_SET_BY_USER:
 539                 break;
 540                 /* Todo: apply driver specific changes in channel flags based
 541                    on the request initiator if necessary. */
 542         case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 543                 break;
 544         }
 545         mwifiex_send_domain_info_cmd_fw(wiphy);
 546 }
 547
 548 /*
 549  * This function sets the fragmentation threshold.
 550  *
 551  * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
 552  * and MWIFIEX_FRAG_MAX_VALUE.
 553  */
 554 static int
 555 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
 556 {
 557         if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
 558             frag_thr > MWIFIEX_FRAG_MAX_VALUE)
 559                 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
 560
 561         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 562                                      HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
 563                                      &frag_thr);
 564 }
 565
 566 /*
 567  * This function sets the RTS threshold.
 568
 569  * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 570  * and MWIFIEX_RTS_MAX_VALUE.
 571  */
 572 static int
 573 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
 574 {
 575         if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
 576                 rts_thr = MWIFIEX_RTS_MAX_VALUE;
 577
 578         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 579                                     HostCmd_ACT_GEN_SET, RTS_THRESH_I,
 580                                     &rts_thr);
 581 }
 582
 583 /*
 584  * CFG802.11 operation handler to set wiphy parameters.
 585  *
 586  * This function can be used to set the RTS threshold and the
 587  * Fragmentation threshold of the driver.
 588  */
 589 static int
 590 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 591 {
 592         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
 593         struct mwifiex_private *priv;
 594         struct mwifiex_uap_bss_param *bss_cfg;
 595         int ret, bss_started, i;
 596
 597         for (i = 0; i < adapter->priv_num; i++) {
 598                 priv = adapter->priv[i];
 599
 600                 switch (priv->bss_role) {
 601                 case MWIFIEX_BSS_ROLE_UAP:
 602                         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
 603                                           GFP_KERNEL);
 604                         if (!bss_cfg)
 605                                 return -ENOMEM;
 606
 607                         mwifiex_set_sys_config_invalid_data(bss_cfg);
 608
 609                         if (changed & WIPHY_PARAM_RTS_THRESHOLD)
 610                                 bss_cfg->rts_threshold = wiphy->rts_threshold;
 611                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
 612                                 bss_cfg->frag_threshold = wiphy->frag_threshold;
 613                         if (changed & WIPHY_PARAM_RETRY_LONG)
 614                                 bss_cfg->retry_limit = wiphy->retry_long;
 615
 616                         bss_started = priv->bss_started;
 617
 618                         ret = mwifiex_send_cmd_sync(priv,
 619                                                     HostCmd_CMD_UAP_BSS_STOP,
 620                                                     HostCmd_ACT_GEN_SET, 0,
 621                                                     NULL);
 622                         if (ret) {
 623                                 wiphy_err(wiphy, "Failed to stop the BSS\n");
 624                                 kfree(bss_cfg);
 625                                 return ret;
 626                         }
 627
 628                         ret = mwifiex_send_cmd_async(priv,
 629                                                      HostCmd_CMD_UAP_SYS_CONFIG,
 630                                                      HostCmd_ACT_GEN_SET,
 631                                                      UAP_BSS_PARAMS_I, bss_cfg);
 632
 633                         kfree(bss_cfg);
 634
 635                         if (ret) {
 636                                 wiphy_err(wiphy, "Failed to set bss config\n");
 637                                 return ret;
 638                         }
 639
 640                         if (!bss_started)
 641                                 break;
 642
 643                         ret = mwifiex_send_cmd_async(priv,
 644                                                      HostCmd_CMD_UAP_BSS_START,
 645                                                      HostCmd_ACT_GEN_SET, 0,
 646                                                      NULL);
 647                         if (ret) {
 648                                 wiphy_err(wiphy, "Failed to start BSS\n");
 649                                 return ret;
 650                         }
 651
 652                         break;
 653                 case MWIFIEX_BSS_ROLE_STA:
 654                         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 655                                 ret = mwifiex_set_rts(priv,
 656                                                       wiphy->rts_threshold);
 657                                 if (ret)
 658                                         return ret;
 659                         }
 660                         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 661                                 ret = mwifiex_set_frag(priv,
 662                                                        wiphy->frag_threshold);
 663                                 if (ret)
 664                                         return ret;
 665                         }
 666                         break;
 667                 }
 668         }
 669
 670         return 0;
 671 }
 672
 673 static int
 674 mwifiex_cfg80211_deinit_p2p(struct mwifiex_private *priv)
 675 {
 676         u16 mode = P2P_MODE_DISABLE;
 677
 678         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA)
 679                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_STA);
 680
 681         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 682                                   HostCmd_ACT_GEN_SET, 0, &mode))
 683                 return -1;
 684
 685         return 0;
 686 }
 687
 688 /*
 689  * This function initializes the functionalities for P2P client.
 690  * The P2P client initialization sequence is:
 691  * disable -> device -> client
 692  */
 693 static int
 694 mwifiex_cfg80211_init_p2p_client(struct mwifiex_private *priv)
 695 {
 696         u16 mode;
 697
 698         if (mwifiex_cfg80211_deinit_p2p(priv))
 699                 return -1;
 700
 701         mode = P2P_MODE_DEVICE;
 702         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 703                                   HostCmd_ACT_GEN_SET, 0, &mode))
 704                 return -1;
 705
 706         mode = P2P_MODE_CLIENT;
 707         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 708                                   HostCmd_ACT_GEN_SET, 0, &mode))
 709                 return -1;
 710
 711         return 0;
 712 }
 713
 714 /*
 715  * This function initializes the functionalities for P2P GO.
 716  * The P2P GO initialization sequence is:
 717  * disable -> device -> GO
 718  */
 719 static int
 720 mwifiex_cfg80211_init_p2p_go(struct mwifiex_private *priv)
 721 {
 722         u16 mode;
 723
 724         if (mwifiex_cfg80211_deinit_p2p(priv))
 725                 return -1;
 726
 727         mode = P2P_MODE_DEVICE;
 728         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 729                                   HostCmd_ACT_GEN_SET, 0, &mode))
 730                 return -1;
 731
 732         mode = P2P_MODE_GO;
 733         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_P2P_MODE_CFG,
 734                                   HostCmd_ACT_GEN_SET, 0, &mode))
 735                 return -1;
 736
 737         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
 738                 mwifiex_set_bss_role(priv, MWIFIEX_BSS_ROLE_UAP);
 739
 740         return 0;
 741 }
 742
 743 /*
 744  * CFG802.11 operation handler to change interface type.
 745  */
 746 static int
 747 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 748                                      struct net_device *dev,
 749                                      enum nl80211_iftype type, u32 *flags,
 750                                      struct vif_params *params)
 751 {
 752         int ret;
 753         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 754
 755         switch (dev->ieee80211_ptr->iftype) {
 756         case NL80211_IFTYPE_ADHOC:
 757                 switch (type) {
 758                 case NL80211_IFTYPE_STATION:
 759                         break;
 760                 case NL80211_IFTYPE_UNSPECIFIED:
 761                         wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
 762                 case NL80211_IFTYPE_ADHOC:      /* This shouldn't happen */
 763                         return 0;
 764                 case NL80211_IFTYPE_AP:
 765                 default:
 766                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 767                                   dev->name, type);
 768                         return -EOPNOTSUPP;
 769                 }
 770                 break;
 771         case NL80211_IFTYPE_STATION:
 772                 switch (type) {
 773                 case NL80211_IFTYPE_ADHOC:
 774                         break;
 775                 case NL80211_IFTYPE_P2P_CLIENT:
 776                         if (mwifiex_cfg80211_init_p2p_client(priv))
 777                                 return -EFAULT;
 778                         dev->ieee80211_ptr->iftype = type;
 779                         return 0;
 780                 case NL80211_IFTYPE_P2P_GO:
 781                         if (mwifiex_cfg80211_init_p2p_go(priv))
 782                                 return -EFAULT;
 783                         dev->ieee80211_ptr->iftype = type;
 784                         return 0;
 785                 case NL80211_IFTYPE_UNSPECIFIED:
 786                         wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
 787                 case NL80211_IFTYPE_STATION:    /* This shouldn't happen */
 788                         return 0;
 789                 case NL80211_IFTYPE_AP:
 790                 default:
 791                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 792                                   dev->name, type);
 793                         return -EOPNOTSUPP;
 794                 }
 795                 break;
 796         case NL80211_IFTYPE_AP:
 797                 switch (type) {
 798                 case NL80211_IFTYPE_UNSPECIFIED:
 799                         wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
 800                 case NL80211_IFTYPE_AP:         /* This shouldn't happen */
 801                         return 0;
 802                 case NL80211_IFTYPE_ADHOC:
 803                 case NL80211_IFTYPE_STATION:
 804                 default:
 805                         wiphy_err(wiphy, "%s: changing to %d not supported\n",
 806                                   dev->name, type);
 807                         return -EOPNOTSUPP;
 808                 }
 809                 break;
 810         case NL80211_IFTYPE_P2P_CLIENT:
 811         case NL80211_IFTYPE_P2P_GO:
 812                 switch (type) {
 813                 case NL80211_IFTYPE_STATION:
 814                         if (mwifiex_cfg80211_deinit_p2p(priv))
 815                                 return -EFAULT;
 816                         dev->ieee80211_ptr->iftype = type;
 817                         return 0;
 818                 default:
 819                         return -EOPNOTSUPP;
 820                 }
 821                 break;
 822         default:
 823                 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
 824                           dev->name, dev->ieee80211_ptr->iftype);
 825                 return -EOPNOTSUPP;
 826         }
 827
 828         dev->ieee80211_ptr->iftype = type;
 829         priv->bss_mode = type;
 830         mwifiex_deauthenticate(priv, NULL);
 831
 832         priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
 833
 834         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
 835                                     HostCmd_ACT_GEN_SET, 0, NULL);
 836
 837         return ret;
 838 }
 839
 840 static void
 841 mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
 842                      struct rate_info *rate)
 843 {
 844         struct mwifiex_adapter *adapter = priv->adapter;
 845
 846         if (adapter->is_hw_11ac_capable) {
 847                 /* bit[1-0]: 00=LG 01=HT 10=VHT */
 848                 if (tx_htinfo & BIT(0)) {
 849                         /* HT */
 850                         rate->mcs = priv->tx_rate;
 851                         rate->flags |= RATE_INFO_FLAGS_MCS;
 852                 }
 853                 if (tx_htinfo & BIT(1)) {
 854                         /* VHT */
 855                         rate->mcs = priv->tx_rate & 0x0F;
 856                         rate->flags |= RATE_INFO_FLAGS_VHT_MCS;
 857                 }
 858
 859                 if (tx_htinfo & (BIT(1) | BIT(0))) {
 860                         /* HT or VHT */
 861                         switch (tx_htinfo & (BIT(3) | BIT(2))) {
 862                         case 0:
 863                                 /* This will be 20MHz */
 864                                 break;
 865                         case (BIT(2)):
 866                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 867                                 break;
 868                         case (BIT(3)):
 869                                 rate->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 870                                 break;
 871                         case (BIT(3) | BIT(2)):
 872                                 rate->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 873                                 break;
 874                         }
 875
 876                         if (tx_htinfo & BIT(4))
 877                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 878
 879                         if ((priv->tx_rate >> 4) == 1)
 880                                 rate->nss = 2;
 881                         else
 882                                 rate->nss = 1;
 883                 }
 884         } else {
 885                 /*
 886                  * Bit 0 in tx_htinfo indicates that current Tx rate
 887                  * is 11n rate. Valid MCS index values for us are 0 to 15.
 888                  */
 889                 if ((tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
 890                         rate->mcs = priv->tx_rate;
 891                         rate->flags |= RATE_INFO_FLAGS_MCS;
 892                         if (tx_htinfo & BIT(1))
 893                                 rate->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 894                         if (tx_htinfo & BIT(2))
 895                                 rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
 896                 }
 897         }
 898 }
 899
 900 /*
 901  * This function dumps the station information on a buffer.
 902  *
 903  * The following information are shown -
 904  *      - Total bytes transmitted
 905  *      - Total bytes received
 906  *      - Total packets transmitted
 907  *      - Total packets received
 908  *      - Signal quality level
 909  *      - Transmission rate
 910  */
 911 static int
 912 mwifiex_dump_station_info(struct mwifiex_private *priv,
 913                           struct station_info *sinfo)
 914 {
 915         u32 rate;
 916
 917         sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
 918                         STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
 919                         STATION_INFO_TX_BITRATE |
 920                         STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 921
 922         /* Get signal information from the firmware */
 923         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
 924                                   HostCmd_ACT_GEN_GET, 0, NULL)) {
 925                 dev_err(priv->adapter->dev, "failed to get signal information\n");
 926                 return -EFAULT;
 927         }
 928
 929         if (mwifiex_drv_get_data_rate(priv, &rate)) {
 930                 dev_err(priv->adapter->dev, "getting data rate\n");
 931                 return -EFAULT;
 932         }
 933
 934         /* Get DTIM period information from firmware */
 935         mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
 936                               HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
 937                               &priv->dtim_period);
 938
 939         mwifiex_parse_htinfo(priv, priv->tx_htinfo, &sinfo->txrate);
 940
 941         sinfo->signal_avg = priv->bcn_rssi_avg;
 942         sinfo->rx_bytes = priv->stats.rx_bytes;
 943         sinfo->tx_bytes = priv->stats.tx_bytes;
 944         sinfo->rx_packets = priv->stats.rx_packets;
 945         sinfo->tx_packets = priv->stats.tx_packets;
 946         sinfo->signal = priv->bcn_rssi_avg;
 947         /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
 948         sinfo->txrate.legacy = rate * 5;
 949
 950         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 951                 sinfo->filled |= STATION_INFO_BSS_PARAM;
 952                 sinfo->bss_param.flags = 0;
 953                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 954                                                 WLAN_CAPABILITY_SHORT_PREAMBLE)
 955                         sinfo->bss_param.flags |=
 956                                         BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 957                 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
 958                                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
 959                         sinfo->bss_param.flags |=
 960                                         BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 961                 sinfo->bss_param.dtim_period = priv->dtim_period;
 962                 sinfo->bss_param.beacon_interval =
 963                         priv->curr_bss_params.bss_descriptor.beacon_period;
 964         }
 965
 966         return 0;
 967 }
 968
 969 /*
 970  * CFG802.11 operation handler to get station information.
 971  *
 972  * This function only works in connected mode, and dumps the
 973  * requested station information, if available.
 974  */
 975 static int
 976 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 977                              u8 *mac, struct station_info *sinfo)
 978 {
 979         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 980
 981         if (!priv->media_connected)
 982                 return -ENOENT;
 983         if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
 984                 return -ENOENT;
 985
 986         return mwifiex_dump_station_info(priv, sinfo);
 987 }
 988
 989 /*
 990  * CFG802.11 operation handler to dump station information.
 991  */
 992 static int
 993 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 994                               int idx, u8 *mac, struct station_info *sinfo)
 995 {
 996         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 997
 998         if (!priv->media_connected || idx)
 999                 return -ENOENT;
1000
1001         memcpy(mac, priv->cfg_bssid, ETH_ALEN);
1002
1003         return mwifiex_dump_station_info(priv, sinfo);
1004 }
1005
1006 /* Supported rates to be advertised to the cfg80211 */
1007 static struct ieee80211_rate mwifiex_rates[] = {
1008         {.bitrate = 10, .hw_value = 2, },
1009         {.bitrate = 20, .hw_value = 4, },
1010         {.bitrate = 55, .hw_value = 11, },
1011         {.bitrate = 110, .hw_value = 22, },
1012         {.bitrate = 60, .hw_value = 12, },
1013         {.bitrate = 90, .hw_value = 18, },
1014         {.bitrate = 120, .hw_value = 24, },
1015         {.bitrate = 180, .hw_value = 36, },
1016         {.bitrate = 240, .hw_value = 48, },
1017         {.bitrate = 360, .hw_value = 72, },
1018         {.bitrate = 480, .hw_value = 96, },
1019         {.bitrate = 540, .hw_value = 108, },
1020 };
1021
1022 /* Channel definitions to be advertised to cfg80211 */
1023 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
1024         {.center_freq = 2412, .hw_value = 1, },
1025         {.center_freq = 2417, .hw_value = 2, },
1026         {.center_freq = 2422, .hw_value = 3, },
1027         {.center_freq = 2427, .hw_value = 4, },
1028         {.center_freq = 2432, .hw_value = 5, },
1029         {.center_freq = 2437, .hw_value = 6, },
1030         {.center_freq = 2442, .hw_value = 7, },
1031         {.center_freq = 2447, .hw_value = 8, },
1032         {.center_freq = 2452, .hw_value = 9, },
1033         {.center_freq = 2457, .hw_value = 10, },
1034         {.center_freq = 2462, .hw_value = 11, },
1035         {.center_freq = 2467, .hw_value = 12, },
1036         {.center_freq = 2472, .hw_value = 13, },
1037         {.center_freq = 2484, .hw_value = 14, },
1038 };
1039
1040 static struct ieee80211_supported_band mwifiex_band_2ghz = {
1041         .channels = mwifiex_channels_2ghz,
1042         .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
1043         .bitrates = mwifiex_rates,
1044         .n_bitrates = ARRAY_SIZE(mwifiex_rates),
1045 };
1046
1047 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
1048         {.center_freq = 5040, .hw_value = 8, },
1049         {.center_freq = 5060, .hw_value = 12, },
1050         {.center_freq = 5080, .hw_value = 16, },
1051         {.center_freq = 5170, .hw_value = 34, },
1052         {.center_freq = 5190, .hw_value = 38, },
1053         {.center_freq = 5210, .hw_value = 42, },
1054         {.center_freq = 5230, .hw_value = 46, },
1055         {.center_freq = 5180, .hw_value = 36, },
1056         {.center_freq = 5200, .hw_value = 40, },
1057         {.center_freq = 5220, .hw_value = 44, },
1058         {.center_freq = 5240, .hw_value = 48, },
1059         {.center_freq = 5260, .hw_value = 52, },
1060         {.center_freq = 5280, .hw_value = 56, },
1061         {.center_freq = 5300, .hw_value = 60, },
1062         {.center_freq = 5320, .hw_value = 64, },
1063         {.center_freq = 5500, .hw_value = 100, },
1064         {.center_freq = 5520, .hw_value = 104, },
1065         {.center_freq = 5540, .hw_value = 108, },
1066         {.center_freq = 5560, .hw_value = 112, },
1067         {.center_freq = 5580, .hw_value = 116, },
1068         {.center_freq = 5600, .hw_value = 120, },
1069         {.center_freq = 5620, .hw_value = 124, },
1070         {.center_freq = 5640, .hw_value = 128, },
1071         {.center_freq = 5660, .hw_value = 132, },
1072         {.center_freq = 5680, .hw_value = 136, },
1073         {.center_freq = 5700, .hw_value = 140, },
1074         {.center_freq = 5745, .hw_value = 149, },
1075         {.center_freq = 5765, .hw_value = 153, },
1076         {.center_freq = 5785, .hw_value = 157, },
1077         {.center_freq = 5805, .hw_value = 161, },
1078         {.center_freq = 5825, .hw_value = 165, },
1079 };
1080
1081 static struct ieee80211_supported_band mwifiex_band_5ghz = {
1082         .channels = mwifiex_channels_5ghz,
1083         .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
1084         .bitrates = mwifiex_rates + 4,
1085         .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
1086 };
1087
1088
1089 /* Supported crypto cipher suits to be advertised to cfg80211 */
1090 static const u32 mwifiex_cipher_suites[] = {
1091         WLAN_CIPHER_SUITE_WEP40,
1092         WLAN_CIPHER_SUITE_WEP104,
1093         WLAN_CIPHER_SUITE_TKIP,
1094         WLAN_CIPHER_SUITE_CCMP,
1095         WLAN_CIPHER_SUITE_AES_CMAC,
1096 };
1097
1098 /* Supported mgmt frame types to be advertised to cfg80211 */
1099 static const struct ieee80211_txrx_stypes
1100 mwifiex_mgmt_stypes[NUM_NL80211_IFTYPES] = {
1101         [NL80211_IFTYPE_STATION] = {
1102                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1103                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1104                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1105                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1106         },
1107         [NL80211_IFTYPE_AP] = {
1108                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1109                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1110                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1111                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1112         },
1113         [NL80211_IFTYPE_P2P_CLIENT] = {
1114                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1115                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1116                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1117                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1118         },
1119         [NL80211_IFTYPE_P2P_GO] = {
1120                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1121                       BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
1122                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
1123                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
1124         },
1125 };
1126
1127 /*
1128  * CFG802.11 operation handler for setting bit rates.
1129  *
1130  * Function configures data rates to firmware using bitrate mask
1131  * provided by cfg80211.
1132  */
1133 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
1134                                 struct net_device *dev,
1135                                 const u8 *peer,
1136                                 const struct cfg80211_bitrate_mask *mask)
1137 {
1138         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1139         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
1140         enum ieee80211_band band;
1141
1142         if (!priv->media_connected) {
1143                 dev_err(priv->adapter->dev,
1144                         "Can not set Tx data rate in disconnected state\n");
1145                 return -EINVAL;
1146         }
1147
1148         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1149
1150         memset(bitmap_rates, 0, sizeof(bitmap_rates));
1151
1152         /* Fill HR/DSSS rates. */
1153         if (band == IEEE80211_BAND_2GHZ)
1154                 bitmap_rates[0] = mask->control[band].legacy & 0x000f;
1155
1156         /* Fill OFDM rates */
1157         if (band == IEEE80211_BAND_2GHZ)
1158                 bitmap_rates[1] = (mask->control[band].legacy & 0x0ff0) >> 4;
1159         else
1160                 bitmap_rates[1] = mask->control[band].legacy;
1161
1162         /* Fill MCS rates */
1163         bitmap_rates[2] = mask->control[band].mcs[0];
1164         if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2)
1165                 bitmap_rates[2] |= mask->control[band].mcs[1] << 8;
1166
1167         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
1168                                      HostCmd_ACT_GEN_SET, 0, bitmap_rates);
1169 }
1170
1171 /*
1172  * CFG802.11 operation handler for connection quality monitoring.
1173  *
1174  * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
1175  * events to FW.
1176  */
1177 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
1178                                                 struct net_device *dev,
1179                                                 s32 rssi_thold, u32 rssi_hyst)
1180 {
1181         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1182         struct mwifiex_ds_misc_subsc_evt subsc_evt;
1183
1184         priv->cqm_rssi_thold = rssi_thold;
1185         priv->cqm_rssi_hyst = rssi_hyst;
1186
1187         memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
1188         subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
1189
1190         /* Subscribe/unsubscribe low and high rssi events */
1191         if (rssi_thold && rssi_hyst) {
1192                 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
1193                 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
1194                 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
1195                 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
1196                 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
1197                 return mwifiex_send_cmd_sync(priv,
1198                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1199                                              0, 0, &subsc_evt);
1200         } else {
1201                 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
1202                 return mwifiex_send_cmd_sync(priv,
1203                                              HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
1204                                              0, 0, &subsc_evt);
1205         }
1206
1207         return 0;
1208 }
1209
1210 /* cfg80211 operation handler for change_beacon.
1211  * Function retrieves and sets modified management IEs to FW.
1212  */
1213 static int mwifiex_cfg80211_change_beacon(struct wiphy *wiphy,
1214                                           struct net_device *dev,
1215                                           struct cfg80211_beacon_data *data)
1216 {
1217         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1218
1219         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP) {
1220                 wiphy_err(wiphy, "%s: bss_type mismatched\n", __func__);
1221                 return -EINVAL;
1222         }
1223
1224         if (!priv->bss_started) {
1225                 wiphy_err(wiphy, "%s: bss not started\n", __func__);
1226                 return -EINVAL;
1227         }
1228
1229         if (mwifiex_set_mgmt_ies(priv, data)) {
1230                 wiphy_err(wiphy, "%s: setting mgmt ies failed\n", __func__);
1231                 return -EFAULT;
1232         }
1233
1234         return 0;
1235 }
1236
1237 /* cfg80211 operation handler for del_station.
1238  * Function deauthenticates station which value is provided in mac parameter.
1239  * If mac is NULL/broadcast, all stations in associated station list are
1240  * deauthenticated. If bss is not started or there are no stations in
1241  * associated stations list, no action is taken.
1242  */
1243 static int
1244 mwifiex_cfg80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1245                              u8 *mac)
1246 {
1247         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1248         struct mwifiex_sta_node *sta_node;
1249         unsigned long flags;
1250
1251         if (list_empty(&priv->sta_list) || !priv->bss_started)
1252                 return 0;
1253
1254         if (!mac || is_broadcast_ether_addr(mac)) {
1255                 wiphy_dbg(wiphy, "%s: NULL/broadcast mac address\n", __func__);
1256                 list_for_each_entry(sta_node, &priv->sta_list, list) {
1257                         if (mwifiex_send_cmd_sync(priv,
1258                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1259                                                   HostCmd_ACT_GEN_SET, 0,
1260                                                   sta_node->mac_addr))
1261                                 return -1;
1262                         mwifiex_uap_del_sta_data(priv, sta_node);
1263                 }
1264         } else {
1265                 wiphy_dbg(wiphy, "%s: mac address %pM\n", __func__, mac);
1266                 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1267                 sta_node = mwifiex_get_sta_entry(priv, mac);
1268                 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1269                 if (sta_node) {
1270                         if (mwifiex_send_cmd_sync(priv,
1271                                                   HostCmd_CMD_UAP_STA_DEAUTH,
1272                                                   HostCmd_ACT_GEN_SET, 0,
1273                                                   sta_node->mac_addr))
1274                                 return -1;
1275                         mwifiex_uap_del_sta_data(priv, sta_node);
1276                 }
1277         }
1278
1279         return 0;
1280 }
1281
1282 static int
1283 mwifiex_cfg80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1284 {
1285         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1286         struct mwifiex_private *priv = mwifiex_get_priv(adapter,
1287                                                         MWIFIEX_BSS_ROLE_ANY);
1288         struct mwifiex_ds_ant_cfg ant_cfg;
1289
1290         if (!tx_ant || !rx_ant)
1291                 return -EOPNOTSUPP;
1292
1293         if (adapter->hw_dev_mcs_support != HT_STREAM_2X2) {
1294                 /* Not a MIMO chip. User should provide specific antenna number
1295                  * for Tx/Rx path or enable all antennas for diversity
1296                  */
1297                 if (tx_ant != rx_ant)
1298                         return -EOPNOTSUPP;
1299
1300                 if ((tx_ant & (tx_ant - 1)) &&
1301                     (tx_ant != BIT(adapter->number_of_antenna) - 1))
1302                         return -EOPNOTSUPP;
1303
1304                 if ((tx_ant == BIT(adapter->number_of_antenna) - 1) &&
1305                     (priv->adapter->number_of_antenna > 1)) {
1306                         tx_ant = RF_ANTENNA_AUTO;
1307                         rx_ant = RF_ANTENNA_AUTO;
1308                 }
1309         }
1310
1311         ant_cfg.tx_ant = tx_ant;
1312         ant_cfg.rx_ant = rx_ant;
1313
1314         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_RF_ANTENNA,
1315                                      HostCmd_ACT_GEN_SET, 0, &ant_cfg);
1316 }
1317
1318 /* cfg80211 operation handler for stop ap.
1319  * Function stops BSS running at uAP interface.
1320  */
1321 static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1322 {
1323         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1324
1325         if (mwifiex_del_mgmt_ies(priv))
1326                 wiphy_err(wiphy, "Failed to delete mgmt IEs!\n");
1327
1328         priv->ap_11n_enabled = 0;
1329
1330         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1331                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1332                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1333                 return -1;
1334         }
1335
1336         return 0;
1337 }
1338
1339 /* cfg80211 operation handler for start_ap.
1340  * Function sets beacon period, DTIM period, SSID and security into
1341  * AP config structure.
1342  * AP is configured with these settings and BSS is started.
1343  */
1344 static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
1345                                      struct net_device *dev,
1346                                      struct cfg80211_ap_settings *params)
1347 {
1348         struct mwifiex_uap_bss_param *bss_cfg;
1349         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1350         u8 config_bands = 0;
1351
1352         if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_UAP)
1353                 return -1;
1354         if (mwifiex_set_mgmt_ies(priv, &params->beacon))
1355                 return -1;
1356
1357         bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
1358         if (!bss_cfg)
1359                 return -ENOMEM;
1360
1361         mwifiex_set_sys_config_invalid_data(bss_cfg);
1362
1363         if (params->beacon_interval)
1364                 bss_cfg->beacon_period = params->beacon_interval;
1365         if (params->dtim_period)
1366                 bss_cfg->dtim_period = params->dtim_period;
1367
1368         if (params->ssid && params->ssid_len) {
1369                 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
1370                 bss_cfg->ssid.ssid_len = params->ssid_len;
1371         }
1372
1373         switch (params->hidden_ssid) {
1374         case NL80211_HIDDEN_SSID_NOT_IN_USE:
1375                 bss_cfg->bcast_ssid_ctl = 1;
1376                 break;
1377         case NL80211_HIDDEN_SSID_ZERO_LEN:
1378                 bss_cfg->bcast_ssid_ctl = 0;
1379                 break;
1380         case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
1381                 /* firmware doesn't support this type of hidden SSID */
1382         default:
1383                 kfree(bss_cfg);
1384                 return -EINVAL;
1385         }
1386
1387         bss_cfg->channel = ieee80211_frequency_to_channel(
1388                                 params->chandef.chan->center_freq);
1389
1390         /* Set appropriate bands */
1391         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1392                 bss_cfg->band_cfg = BAND_CONFIG_BG;
1393                 config_bands = BAND_B | BAND_G;
1394
1395                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1396                         config_bands |= BAND_GN;
1397
1398                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1399                         config_bands |= BAND_GAC;
1400         } else {
1401                 bss_cfg->band_cfg = BAND_CONFIG_A;
1402                 config_bands = BAND_A;
1403
1404                 if (params->chandef.width > NL80211_CHAN_WIDTH_20_NOHT)
1405                         config_bands |= BAND_AN;
1406
1407                 if (params->chandef.width > NL80211_CHAN_WIDTH_40)
1408                         config_bands |= BAND_AAC;
1409         }
1410
1411         if (!((config_bands | priv->adapter->fw_bands) &
1412               ~priv->adapter->fw_bands))
1413                 priv->adapter->config_bands = config_bands;
1414
1415         mwifiex_set_uap_rates(bss_cfg, params);
1416         mwifiex_send_domain_info_cmd_fw(wiphy);
1417
1418         if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
1419                 kfree(bss_cfg);
1420                 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
1421                 return -1;
1422         }
1423
1424         mwifiex_set_ht_params(priv, bss_cfg, params);
1425
1426         if (priv->adapter->is_hw_11ac_capable) {
1427                 mwifiex_set_vht_params(priv, bss_cfg, params);
1428                 mwifiex_set_vht_width(priv, params->chandef.width,
1429                                       priv->ap_11ac_enabled);
1430         }
1431
1432         if (priv->ap_11ac_enabled)
1433                 mwifiex_set_11ac_ba_params(priv);
1434         else
1435                 mwifiex_set_ba_params(priv);
1436
1437         mwifiex_set_wmm_params(priv, bss_cfg, params);
1438
1439         if (params->inactivity_timeout > 0) {
1440                 /* sta_ao_timer/ps_sta_ao_timer is in unit of 100ms */
1441                 bss_cfg->sta_ao_timer = 10 * params->inactivity_timeout;
1442                 bss_cfg->ps_sta_ao_timer = 10 * params->inactivity_timeout;
1443         }
1444
1445         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
1446                                   HostCmd_ACT_GEN_SET, 0, NULL)) {
1447                 wiphy_err(wiphy, "Failed to stop the BSS\n");
1448                 kfree(bss_cfg);
1449                 return -1;
1450         }
1451
1452         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
1453                                    HostCmd_ACT_GEN_SET,
1454                                    UAP_BSS_PARAMS_I, bss_cfg)) {
1455                 wiphy_err(wiphy, "Failed to set the SSID\n");
1456                 kfree(bss_cfg);
1457                 return -1;
1458         }
1459
1460         kfree(bss_cfg);
1461
1462         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
1463                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
1464                 wiphy_err(wiphy, "Failed to start the BSS\n");
1465                 return -1;
1466         }
1467
1468         if (priv->sec_info.wep_enabled)
1469                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1470         else
1471                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1472
1473         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1474                                   HostCmd_ACT_GEN_SET, 0,
1475                                   &priv->curr_pkt_filter))
1476                 return -1;
1477
1478         return 0;
1479 }
1480
1481 /*
1482  * CFG802.11 operation handler for disconnection request.
1483  *
1484  * This function does not work when there is already a disconnection
1485  * procedure going on.
1486  */
1487 static int
1488 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1489                             u16 reason_code)
1490 {
1491         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1492
1493         if (mwifiex_deauthenticate(priv, NULL))
1494                 return -EFAULT;
1495
1496         wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1497                 " reason code %d\n", priv->cfg_bssid, reason_code);
1498
1499         memset(priv->cfg_bssid, 0, ETH_ALEN);
1500
1501         return 0;
1502 }
1503
1504 /*
1505  * This function informs the CFG802.11 subsystem of a new IBSS.
1506  *
1507  * The following information are sent to the CFG802.11 subsystem
1508  * to register the new IBSS. If we do not register the new IBSS,
1509  * a kernel panic will result.
1510  *      - SSID
1511  *      - SSID length
1512  *      - BSSID
1513  *      - Channel
1514  */
1515 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1516 {
1517         struct ieee80211_channel *chan;
1518         struct mwifiex_bss_info bss_info;
1519         struct cfg80211_bss *bss;
1520         int ie_len;
1521         u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1522         enum ieee80211_band band;
1523
1524         if (mwifiex_get_bss_info(priv, &bss_info))
1525                 return -1;
1526
1527         ie_buf[0] = WLAN_EID_SSID;
1528         ie_buf[1] = bss_info.ssid.ssid_len;
1529
1530         memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1531                &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1532         ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1533
1534         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1535         chan = __ieee80211_get_channel(priv->wdev->wiphy,
1536                         ieee80211_channel_to_frequency(bss_info.bss_chan,
1537                                                        band));
1538
1539         bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1540                                   bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1541                                   0, ie_buf, ie_len, 0, GFP_KERNEL);
1542         cfg80211_put_bss(priv->wdev->wiphy, bss);
1543         memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1544
1545         return 0;
1546 }
1547
1548 /*
1549  * This function connects with a BSS.
1550  *
1551  * This function handles both Infra and Ad-Hoc modes. It also performs
1552  * validity checking on the provided parameters, disconnects from the
1553  * current BSS (if any), sets up the association/scan parameters,
1554  * including security settings, and performs specific SSID scan before
1555  * trying to connect.
1556  *
1557  * For Infra mode, the function returns failure if the specified SSID
1558  * is not found in scan table. However, for Ad-Hoc mode, it can create
1559  * the IBSS if it does not exist. On successful completion in either case,
1560  * the function notifies the CFG802.11 subsystem of the new BSS connection.
1561  */
1562 static int
1563 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1564                        u8 *bssid, int mode, struct ieee80211_channel *channel,
1565                        struct cfg80211_connect_params *sme, bool privacy)
1566 {
1567         struct cfg80211_ssid req_ssid;
1568         int ret, auth_type = 0;
1569         struct cfg80211_bss *bss = NULL;
1570         u8 is_scanning_required = 0;
1571
1572         memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1573
1574         req_ssid.ssid_len = ssid_len;
1575         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1576                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1577                 return -EINVAL;
1578         }
1579
1580         memcpy(req_ssid.ssid, ssid, ssid_len);
1581         if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1582                 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1583                 return -EINVAL;
1584         }
1585
1586         /* disconnect before try to associate */
1587         mwifiex_deauthenticate(priv, NULL);
1588
1589         /* As this is new association, clear locally stored
1590          * keys and security related flags */
1591         priv->sec_info.wpa_enabled = false;
1592         priv->sec_info.wpa2_enabled = false;
1593         priv->wep_key_curr_index = 0;
1594         priv->sec_info.encryption_mode = 0;
1595         priv->sec_info.is_authtype_auto = 0;
1596         ret = mwifiex_set_encode(priv, NULL, NULL, 0, 0, NULL, 1);
1597
1598         if (mode == NL80211_IFTYPE_ADHOC) {
1599                 /* "privacy" is set only for ad-hoc mode */
1600                 if (privacy) {
1601                         /*
1602                          * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1603                          * the firmware can find a matching network from the
1604                          * scan. The cfg80211 does not give us the encryption
1605                          * mode at this stage so just setting it to WEP here.
1606                          */
1607                         priv->sec_info.encryption_mode =
1608                                         WLAN_CIPHER_SUITE_WEP104;
1609                         priv->sec_info.authentication_mode =
1610                                         NL80211_AUTHTYPE_OPEN_SYSTEM;
1611                 }
1612
1613                 goto done;
1614         }
1615
1616         /* Now handle infra mode. "sme" is valid for infra mode only */
1617         if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1618                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1619                 priv->sec_info.is_authtype_auto = 1;
1620         } else {
1621                 auth_type = sme->auth_type;
1622         }
1623
1624         if (sme->crypto.n_ciphers_pairwise) {
1625                 priv->sec_info.encryption_mode =
1626                                                 sme->crypto.ciphers_pairwise[0];
1627                 priv->sec_info.authentication_mode = auth_type;
1628         }
1629
1630         if (sme->crypto.cipher_group) {
1631                 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1632                 priv->sec_info.authentication_mode = auth_type;
1633         }
1634         if (sme->ie)
1635                 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1636
1637         if (sme->key) {
1638                 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1639                         dev_dbg(priv->adapter->dev,
1640                                 "info: setting wep encryption"
1641                                 " with key len %d\n", sme->key_len);
1642                         priv->wep_key_curr_index = sme->key_idx;
1643                         ret = mwifiex_set_encode(priv, NULL, sme->key,
1644                                                  sme->key_len, sme->key_idx,
1645                                                  NULL, 0);
1646                 }
1647         }
1648 done:
1649         /*
1650          * Scan entries are valid for some time (15 sec). So we can save one
1651          * active scan time if we just try cfg80211_get_bss first. If it fails
1652          * then request scan and cfg80211_get_bss() again for final output.
1653          */
1654         while (1) {
1655                 if (is_scanning_required) {
1656                         /* Do specific SSID scanning */
1657                         if (mwifiex_request_scan(priv, &req_ssid)) {
1658                                 dev_err(priv->adapter->dev, "scan error\n");
1659                                 return -EFAULT;
1660                         }
1661                 }
1662
1663                 /* Find the BSS we want using available scan results */
1664                 if (mode == NL80211_IFTYPE_ADHOC)
1665                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1666                                                bssid, ssid, ssid_len,
1667                                                WLAN_CAPABILITY_IBSS,
1668                                                WLAN_CAPABILITY_IBSS);
1669                 else
1670                         bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1671                                                bssid, ssid, ssid_len,
1672                                                WLAN_CAPABILITY_ESS,
1673                                                WLAN_CAPABILITY_ESS);
1674
1675                 if (!bss) {
1676                         if (is_scanning_required) {
1677                                 dev_warn(priv->adapter->dev,
1678                                          "assoc: requested bss not found in scan results\n");
1679                                 break;
1680                         }
1681                         is_scanning_required = 1;
1682                 } else {
1683                         dev_dbg(priv->adapter->dev,
1684                                 "info: trying to associate to '%s' bssid %pM\n",
1685                                 (char *) req_ssid.ssid, bss->bssid);
1686                         memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1687                         break;
1688                 }
1689         }
1690
1691         ret = mwifiex_bss_start(priv, bss, &req_ssid);
1692         if (ret)
1693                 return ret;
1694
1695         if (mode == NL80211_IFTYPE_ADHOC) {
1696                 /* Inform the BSS information to kernel, otherwise
1697                  * kernel will give a panic after successful assoc */
1698                 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1699                         return -EFAULT;
1700         }
1701
1702         return ret;
1703 }
1704
1705 /*
1706  * CFG802.11 operation handler for association request.
1707  *
1708  * This function does not work when the current mode is set to Ad-Hoc, or
1709  * when there is already an association procedure going on. The given BSS
1710  * information is used to associate.
1711  */
1712 static int
1713 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1714                          struct cfg80211_connect_params *sme)
1715 {
1716         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1717         int ret;
1718
1719         if (priv->bss_mode != NL80211_IFTYPE_STATION) {
1720                 wiphy_err(wiphy,
1721                           "%s: reject infra assoc request in non-STA mode\n",
1722                           dev->name);
1723                 return -EINVAL;
1724         }
1725
1726         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1727                   (char *) sme->ssid, sme->bssid);
1728
1729         ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1730                                      priv->bss_mode, sme->channel, sme, 0);
1731         if (!ret) {
1732                 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1733                                         NULL, 0, WLAN_STATUS_SUCCESS,
1734                                         GFP_KERNEL);
1735                 dev_dbg(priv->adapter->dev,
1736                         "info: associated to bssid %pM successfully\n",
1737                         priv->cfg_bssid);
1738         } else {
1739                 dev_dbg(priv->adapter->dev,
1740                         "info: association to bssid %pM failed\n",
1741                         priv->cfg_bssid);
1742                 memset(priv->cfg_bssid, 0, ETH_ALEN);
1743
1744                 if (ret > 0)
1745                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1746                                                 NULL, 0, NULL, 0, ret,
1747                                                 GFP_KERNEL);
1748                 else
1749                         cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1750                                                 NULL, 0, NULL, 0,
1751                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1752                                                 GFP_KERNEL);
1753         }
1754
1755         return 0;
1756 }
1757
1758 /*
1759  * This function sets following parameters for ibss network.
1760  *  -  channel
1761  *  -  start band
1762  *  -  11n flag
1763  *  -  secondary channel offset
1764  */
1765 static int mwifiex_set_ibss_params(struct mwifiex_private *priv,
1766                                    struct cfg80211_ibss_params *params)
1767 {
1768         struct wiphy *wiphy = priv->wdev->wiphy;
1769         struct mwifiex_adapter *adapter = priv->adapter;
1770         int index = 0, i;
1771         u8 config_bands = 0;
1772
1773         if (params->chandef.chan->band == IEEE80211_BAND_2GHZ) {
1774                 if (!params->basic_rates) {
1775                         config_bands = BAND_B | BAND_G;
1776                 } else {
1777                         for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
1778                                 /*
1779                                  * Rates below 6 Mbps in the table are CCK
1780                                  * rates; 802.11b and from 6 they are OFDM;
1781                                  * 802.11G
1782                                  */
1783                                 if (mwifiex_rates[i].bitrate == 60) {
1784                                         index = 1 << i;
1785                                         break;
1786                                 }
1787                         }
1788
1789                         if (params->basic_rates < index) {
1790                                 config_bands = BAND_B;
1791                         } else {
1792                                 config_bands = BAND_G;
1793                                 if (params->basic_rates % index)
1794                                         config_bands |= BAND_B;
1795                         }
1796                 }
1797
1798                 if (cfg80211_get_chandef_type(&params->chandef) !=
1799                                                 NL80211_CHAN_NO_HT)
1800                         config_bands |= BAND_G | BAND_GN;
1801         } else {
1802                 if (cfg80211_get_chandef_type(&params->chandef) ==
1803                                                 NL80211_CHAN_NO_HT)
1804                         config_bands = BAND_A;
1805                 else
1806                         config_bands = BAND_AN | BAND_A;
1807         }
1808
1809         if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands)) {
1810                 adapter->config_bands = config_bands;
1811                 adapter->adhoc_start_band = config_bands;
1812
1813                 if ((config_bands & BAND_GN) || (config_bands & BAND_AN))
1814                         adapter->adhoc_11n_enabled = true;
1815                 else
1816                         adapter->adhoc_11n_enabled = false;
1817         }
1818
1819         adapter->sec_chan_offset =
1820                 mwifiex_chan_type_to_sec_chan_offset(
1821                         cfg80211_get_chandef_type(&params->chandef));
1822         priv->adhoc_channel = ieee80211_frequency_to_channel(
1823                                 params->chandef.chan->center_freq);
1824
1825         wiphy_dbg(wiphy, "info: set ibss band %d, chan %d, chan offset %d\n",
1826                   config_bands, priv->adhoc_channel, adapter->sec_chan_offset);
1827
1828         return 0;
1829 }
1830
1831 /*
1832  * CFG802.11 operation handler to join an IBSS.
1833  *
1834  * This function does not work in any mode other than Ad-Hoc, or if
1835  * a join operation is already in progress.
1836  */
1837 static int
1838 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1839                            struct cfg80211_ibss_params *params)
1840 {
1841         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1842         int ret = 0;
1843
1844         if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1845                 wiphy_err(wiphy, "request to join ibss received "
1846                                 "when station is not in ibss mode\n");
1847                 goto done;
1848         }
1849
1850         wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1851                   (char *) params->ssid, params->bssid);
1852
1853         mwifiex_set_ibss_params(priv, params);
1854
1855         ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1856                                      params->bssid, priv->bss_mode,
1857                                      params->chandef.chan, NULL,
1858                                      params->privacy);
1859 done:
1860         if (!ret) {
1861                 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1862                 dev_dbg(priv->adapter->dev,
1863                         "info: joined/created adhoc network with bssid"
1864                         " %pM successfully\n", priv->cfg_bssid);
1865         } else {
1866                 dev_dbg(priv->adapter->dev,
1867                         "info: failed creating/joining adhoc network\n");
1868         }
1869
1870         return ret;
1871 }
1872
1873 /*
1874  * CFG802.11 operation handler to leave an IBSS.
1875  *
1876  * This function does not work if a leave operation is
1877  * already in progress.
1878  */
1879 static int
1880 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1881 {
1882         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1883
1884         wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1885                   priv->cfg_bssid);
1886         if (mwifiex_deauthenticate(priv, NULL))
1887                 return -EFAULT;
1888
1889         memset(priv->cfg_bssid, 0, ETH_ALEN);
1890
1891         return 0;
1892 }
1893
1894 /*
1895  * CFG802.11 operation handler for scan request.
1896  *
1897  * This function issues a scan request to the firmware based upon
1898  * the user specified scan configuration. On successfull completion,
1899  * it also informs the results.
1900  */
1901 static int
1902 mwifiex_cfg80211_scan(struct wiphy *wiphy,
1903                       struct cfg80211_scan_request *request)
1904 {
1905         struct net_device *dev = request->wdev->netdev;
1906         struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1907         int i, offset, ret;
1908         struct ieee80211_channel *chan;
1909         struct ieee_types_header *ie;
1910         struct mwifiex_user_scan_cfg *user_scan_cfg;
1911
1912         wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1913
1914         if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
1915             atomic_read(&priv->wmm.tx_pkts_queued) >=
1916             MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
1917                 dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
1918                 return -EBUSY;
1919         }
1920
1921         /* Block scan request if scan operation or scan cleanup when interface
1922          * is disabled is in process
1923          */
1924         if (priv->scan_request || priv->scan_aborting) {
1925                 dev_err(priv->adapter->dev, "cmd: Scan already in process..\n");
1926                 return -EBUSY;
1927         }
1928
1929         user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
1930         if (!user_scan_cfg)
1931                 return -ENOMEM;
1932
1933         priv->scan_request = request;
1934
1935         user_scan_cfg->num_ssids = request->n_ssids;
1936         user_scan_cfg->ssid_list = request->ssids;
1937
1938         if (request->ie && request->ie_len) {
1939                 offset = 0;
1940                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1941                         if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1942                                 continue;
1943                         priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1944                         ie = (struct ieee_types_header *)(request->ie + offset);
1945                         memcpy(&priv->vs_ie[i].ie, ie, sizeof(*ie) + ie->len);
1946                         offset += sizeof(*ie) + ie->len;
1947
1948                         if (offset >= request->ie_len)
1949                                 break;
1950                 }
1951         }
1952
1953         for (i = 0; i < min_t(u32, request->n_channels,
1954                               MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
1955                 chan = request->channels[i];
1956                 user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1957                 user_scan_cfg->chan_list[i].radio_type = chan->band;
1958
1959                 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1960                         user_scan_cfg->chan_list[i].scan_type =
1961                                                 MWIFIEX_SCAN_TYPE_PASSIVE;
1962                 else
1963                         user_scan_cfg->chan_list[i].scan_type =
1964                                                 MWIFIEX_SCAN_TYPE_ACTIVE;
1965
1966                 user_scan_cfg->chan_list[i].scan_time = 0;
1967         }
1968
1969         ret = mwifiex_scan_networks(priv, user_scan_cfg);
1970         kfree(user_scan_cfg);
1971         if (ret) {
1972                 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1973                 priv->scan_aborting = false;
1974                 priv->scan_request = NULL;
1975                 return ret;
1976         }
1977
1978         if (request->ie && request->ie_len) {
1979                 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1980                         if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1981                                 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1982                                 memset(&priv->vs_ie[i].ie, 0,
1983                                        MWIFIEX_MAX_VSIE_LEN);
1984                         }
1985                 }
1986         }
1987         return 0;
1988 }
1989
1990 static void mwifiex_setup_vht_caps(struct ieee80211_sta_vht_cap *vht_info,
1991                                    struct mwifiex_private *priv)
1992 {
1993         struct mwifiex_adapter *adapter = priv->adapter;
1994
1995         vht_info->vht_supported = true;
1996
1997         vht_info->cap = adapter->hw_dot_11ac_dev_cap;
1998         /* Update MCS support for VHT */
1999         vht_info->vht_mcs.rx_mcs_map = cpu_to_le16(
2000                                 adapter->hw_dot_11ac_mcs_support & 0xFFFF);
2001         vht_info->vht_mcs.rx_highest = 0;
2002         vht_info->vht_mcs.tx_mcs_map = cpu_to_le16(
2003                                 adapter->hw_dot_11ac_mcs_support >> 16);
2004         vht_info->vht_mcs.tx_highest = 0;
2005 }
2006
2007 /*
2008  * This function sets up the CFG802.11 specific HT capability fields
2009  * with default values.
2010  *
2011  * The following default values are set -
2012  *      - HT Supported = True
2013  *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
2014  *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
2015  *      - HT Capabilities supported by firmware
2016  *      - MCS information, Rx mask = 0xff
2017  *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
2018  */
2019 static void
2020 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
2021                       struct mwifiex_private *priv)
2022 {
2023         int rx_mcs_supp;
2024         struct ieee80211_mcs_info mcs_set;
2025         u8 *mcs = (u8 *)&mcs_set;
2026         struct mwifiex_adapter *adapter = priv->adapter;
2027
2028         ht_info->ht_supported = true;
2029         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2030         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2031
2032         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
2033
2034         /* Fill HT capability information */
2035         if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2036                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2037         else
2038                 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2039
2040         if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
2041                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
2042         else
2043                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
2044
2045         if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
2046                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
2047         else
2048                 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
2049
2050         if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
2051                 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
2052         else
2053                 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
2054
2055         if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
2056                 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
2057         else
2058                 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
2059
2060         if (ISSUPP_GREENFIELD(adapter->hw_dot_11n_dev_cap))
2061                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
2062         else
2063                 ht_info->cap &= ~IEEE80211_HT_CAP_GRN_FLD;
2064
2065         if (ISENABLED_40MHZ_INTOLERANT(adapter->hw_dot_11n_dev_cap))
2066                 ht_info->cap |= IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2067         else
2068                 ht_info->cap &= ~IEEE80211_HT_CAP_40MHZ_INTOLERANT;
2069
2070         if (ISSUPP_RXLDPC(adapter->hw_dot_11n_dev_cap))
2071                 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
2072         else
2073                 ht_info->cap &= ~IEEE80211_HT_CAP_LDPC_CODING;
2074
2075         ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
2076         ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
2077
2078         rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
2079         /* Set MCS for 1x1 */
2080         memset(mcs, 0xff, rx_mcs_supp);
2081         /* Clear all the other values */
2082         memset(&mcs[rx_mcs_supp], 0,
2083                sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
2084         if (priv->bss_mode == NL80211_IFTYPE_STATION ||
2085             ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
2086                 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
2087                 SETHT_MCS32(mcs_set.rx_mask);
2088
2089         memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
2090
2091         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2092 }
2093
2094 /*
2095  *  create a new virtual interface with the given name
2096  */
2097 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
2098                                               const char *name,
2099                                               enum nl80211_iftype type,
2100                                               u32 *flags,
2101                                               struct vif_params *params)
2102 {
2103         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2104         struct mwifiex_private *priv;
2105         struct net_device *dev;
2106         void *mdev_priv;
2107         struct wireless_dev *wdev;
2108
2109         if (!adapter)
2110                 return ERR_PTR(-EFAULT);
2111
2112         switch (type) {
2113         case NL80211_IFTYPE_UNSPECIFIED:
2114         case NL80211_IFTYPE_STATION:
2115         case NL80211_IFTYPE_ADHOC:
2116                 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2117                 if (priv->bss_mode) {
2118                         wiphy_err(wiphy,
2119                                   "cannot create multiple sta/adhoc ifaces\n");
2120                         return ERR_PTR(-EINVAL);
2121                 }
2122
2123                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2124                 if (!wdev)
2125                         return ERR_PTR(-ENOMEM);
2126
2127                 wdev->wiphy = wiphy;
2128                 priv->wdev = wdev;
2129                 wdev->iftype = NL80211_IFTYPE_STATION;
2130
2131                 if (type == NL80211_IFTYPE_UNSPECIFIED)
2132                         priv->bss_mode = NL80211_IFTYPE_STATION;
2133                 else
2134                         priv->bss_mode = type;
2135
2136                 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
2137                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2138                 priv->bss_priority = 0;
2139                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2140                 priv->bss_num = 0;
2141
2142                 break;
2143         case NL80211_IFTYPE_AP:
2144                 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
2145
2146                 if (priv->bss_mode) {
2147                         wiphy_err(wiphy, "Can't create multiple AP interfaces");
2148                         return ERR_PTR(-EINVAL);
2149                 }
2150
2151                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2152                 if (!wdev)
2153                         return ERR_PTR(-ENOMEM);
2154
2155                 priv->wdev = wdev;
2156                 wdev->wiphy = wiphy;
2157                 wdev->iftype = NL80211_IFTYPE_AP;
2158
2159                 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
2160                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2161                 priv->bss_priority = 0;
2162                 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
2163                 priv->bss_started = 0;
2164                 priv->bss_num = 0;
2165                 priv->bss_mode = type;
2166
2167                 break;
2168         case NL80211_IFTYPE_P2P_CLIENT:
2169                 priv = adapter->priv[MWIFIEX_BSS_TYPE_P2P];
2170
2171                 if (priv->bss_mode) {
2172                         wiphy_err(wiphy, "Can't create multiple P2P ifaces");
2173                         return ERR_PTR(-EINVAL);
2174                 }
2175
2176                 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2177                 if (!wdev)
2178                         return ERR_PTR(-ENOMEM);
2179
2180                 priv->wdev = wdev;
2181                 wdev->wiphy = wiphy;
2182
2183                 /* At start-up, wpa_supplicant tries to change the interface
2184                  * to NL80211_IFTYPE_STATION if it is not managed mode.
2185                  */
2186                 wdev->iftype = NL80211_IFTYPE_P2P_CLIENT;
2187                 priv->bss_mode = NL80211_IFTYPE_P2P_CLIENT;
2188
2189                 /* Setting bss_type to P2P tells firmware that this interface
2190                  * is receiving P2P peers found during find phase and doing
2191                  * action frame handshake.
2192                  */
2193                 priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
2194
2195                 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
2196                 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
2197                 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
2198                 priv->bss_started = 0;
2199                 priv->bss_num = 0;
2200
2201                 if (mwifiex_cfg80211_init_p2p_client(priv))
2202                         return ERR_PTR(-EFAULT);
2203
2204                 break;
2205         default:
2206                 wiphy_err(wiphy, "type not supported\n");
2207                 return ERR_PTR(-EINVAL);
2208         }
2209
2210         dev = alloc_netdev_mqs(sizeof(struct mwifiex_private *), name,
2211                                ether_setup, IEEE80211_NUM_ACS, 1);
2212         if (!dev) {
2213                 wiphy_err(wiphy, "no memory available for netdevice\n");
2214                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2215                 return ERR_PTR(-ENOMEM);
2216         }
2217
2218         mwifiex_init_priv_params(priv, dev);
2219         priv->netdev = dev;
2220
2221         mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
2222         if (adapter->is_hw_11ac_capable)
2223                 mwifiex_setup_vht_caps(
2224                         &wiphy->bands[IEEE80211_BAND_2GHZ]->vht_cap, priv);
2225
2226         if (adapter->config_bands & BAND_A)
2227                 mwifiex_setup_ht_caps(
2228                         &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
2229
2230         if ((adapter->config_bands & BAND_A) && adapter->is_hw_11ac_capable)
2231                 mwifiex_setup_vht_caps(
2232                         &wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap, priv);
2233
2234         dev_net_set(dev, wiphy_net(wiphy));
2235         dev->ieee80211_ptr = priv->wdev;
2236         dev->ieee80211_ptr->iftype = priv->bss_mode;
2237         memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
2238         SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
2239
2240         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
2241         dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
2242         dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
2243         dev->ethtool_ops = &mwifiex_ethtool_ops;
2244
2245         mdev_priv = netdev_priv(dev);
2246         *((unsigned long *) mdev_priv) = (unsigned long) priv;
2247
2248         SET_NETDEV_DEV(dev, adapter->dev);
2249
2250         /* Register network device */
2251         if (register_netdevice(dev)) {
2252                 wiphy_err(wiphy, "cannot register virtual network device\n");
2253                 free_netdev(dev);
2254                 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2255                 return ERR_PTR(-EFAULT);
2256         }
2257
2258         sema_init(&priv->async_sem, 1);
2259
2260         dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
2261
2262 #ifdef CONFIG_DEBUG_FS
2263         mwifiex_dev_debugfs_init(priv);
2264 #endif
2265         return wdev;
2266 }
2267 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
2268
2269 /*
2270  * del_virtual_intf: remove the virtual interface determined by dev
2271  */
2272 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
2273 {
2274         struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
2275
2276 #ifdef CONFIG_DEBUG_FS
2277         mwifiex_dev_debugfs_remove(priv);
2278 #endif
2279
2280         mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
2281
2282         if (netif_carrier_ok(priv->netdev))
2283                 netif_carrier_off(priv->netdev);
2284
2285         if (wdev->netdev->reg_state == NETREG_REGISTERED)
2286                 unregister_netdevice(wdev->netdev);
2287
2288         /* Clear the priv in adapter */
2289         priv->netdev = NULL;
2290
2291         priv->media_connected = false;
2292
2293         priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
2294
2295         return 0;
2296 }
2297 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
2298
2299 #ifdef CONFIG_PM
2300 static bool
2301 mwifiex_is_pattern_supported(struct cfg80211_wowlan_trig_pkt_pattern *pat,
2302                              s8 *byte_seq)
2303 {
2304         int j, k, valid_byte_cnt = 0;
2305         bool dont_care_byte = false;
2306
2307         for (j = 0; j < DIV_ROUND_UP(pat->pattern_len, 8); j++) {
2308                 for (k = 0; k < 8; k++) {
2309                         if (pat->mask[j] & 1 << k) {
2310                                 memcpy(byte_seq + valid_byte_cnt,
2311                                        &pat->pattern[j * 8 + k], 1);
2312                                 valid_byte_cnt++;
2313                                 if (dont_care_byte)
2314                                         return false;
2315                         } else {
2316                                 if (valid_byte_cnt)
2317                                         dont_care_byte = true;
2318                         }
2319
2320                         if (valid_byte_cnt > MAX_BYTESEQ)
2321                                 return false;
2322                 }
2323         }
2324
2325         byte_seq[MAX_BYTESEQ] = valid_byte_cnt;
2326
2327         return true;
2328 }
2329
2330 static int mwifiex_cfg80211_suspend(struct wiphy *wiphy,
2331                                     struct cfg80211_wowlan *wowlan)
2332 {
2333         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2334         struct mwifiex_ds_mef_cfg mef_cfg;
2335         struct mwifiex_mef_entry *mef_entry;
2336         int i, filt_num = 0, ret;
2337         bool first_pat = true;
2338         u8 byte_seq[MAX_BYTESEQ + 1];
2339         const u8 ipv4_mc_mac[] = {0x33, 0x33};
2340         const u8 ipv6_mc_mac[] = {0x01, 0x00, 0x5e};
2341         struct mwifiex_private *priv =
2342                         mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
2343
2344         if (!wowlan) {
2345                 dev_warn(adapter->dev, "None of the WOWLAN triggers enabled\n");
2346                 return 0;
2347         }
2348
2349         if (!priv->media_connected) {
2350                 dev_warn(adapter->dev,
2351                          "Can not configure WOWLAN in disconnected state\n");
2352                 return 0;
2353         }
2354
2355         mef_entry = kzalloc(sizeof(*mef_entry), GFP_KERNEL);
2356         if (!mef_entry)
2357                 return -ENOMEM;
2358
2359         memset(&mef_cfg, 0, sizeof(mef_cfg));
2360         mef_cfg.num_entries = 1;
2361         mef_cfg.mef_entry = mef_entry;
2362         mef_entry->mode = MEF_MODE_HOST_SLEEP;
2363         mef_entry->action = MEF_ACTION_ALLOW_AND_WAKEUP_HOST;
2364
2365         for (i = 0; i < wowlan->n_patterns; i++) {
2366                 memset(byte_seq, 0, sizeof(byte_seq));
2367                 if (!mwifiex_is_pattern_supported(&wowlan->patterns[i],
2368                                                   byte_seq)) {
2369                         wiphy_err(wiphy, "Pattern not supported\n");
2370                         kfree(mef_entry);
2371                         return -EOPNOTSUPP;
2372                 }
2373
2374                 if (!wowlan->patterns[i].pkt_offset) {
2375                         if (!(byte_seq[0] & 0x01) &&
2376                             (byte_seq[MAX_BYTESEQ] == 1)) {
2377                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2378                                 continue;
2379                         } else if (is_broadcast_ether_addr(byte_seq)) {
2380                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_BROADCAST;
2381                                 continue;
2382                         } else if ((!memcmp(byte_seq, ipv4_mc_mac, 2) &&
2383                                     (byte_seq[MAX_BYTESEQ] == 2)) ||
2384                                    (!memcmp(byte_seq, ipv6_mc_mac, 3) &&
2385                                     (byte_seq[MAX_BYTESEQ] == 3))) {
2386                                 mef_cfg.criteria |= MWIFIEX_CRITERIA_MULTICAST;
2387                                 continue;
2388                         }
2389                 }
2390
2391                 mef_entry->filter[filt_num].repeat = 1;
2392                 mef_entry->filter[filt_num].offset =
2393                                                 wowlan->patterns[i].pkt_offset;
2394                 memcpy(mef_entry->filter[filt_num].byte_seq, byte_seq,
2395                        sizeof(byte_seq));
2396                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2397
2398                 if (first_pat)
2399                         first_pat = false;
2400                 else
2401                         mef_entry->filter[filt_num].filt_action = TYPE_AND;
2402
2403                 filt_num++;
2404         }
2405
2406         if (wowlan->magic_pkt) {
2407                 mef_cfg.criteria |= MWIFIEX_CRITERIA_UNICAST;
2408                 mef_entry->filter[filt_num].repeat = 16;
2409                 memcpy(mef_entry->filter[filt_num].byte_seq, priv->curr_addr,
2410                        ETH_ALEN);
2411                 mef_entry->filter[filt_num].byte_seq[MAX_BYTESEQ] = ETH_ALEN;
2412                 mef_entry->filter[filt_num].offset = 14;
2413                 mef_entry->filter[filt_num].filt_type = TYPE_EQ;
2414                 if (filt_num)
2415                         mef_entry->filter[filt_num].filt_action = TYPE_OR;
2416         }
2417
2418         if (!mef_cfg.criteria)
2419                 mef_cfg.criteria = MWIFIEX_CRITERIA_BROADCAST |
2420                                    MWIFIEX_CRITERIA_UNICAST |
2421                                    MWIFIEX_CRITERIA_MULTICAST;
2422
2423         ret =  mwifiex_send_cmd_sync(priv, HostCmd_CMD_MEF_CFG,
2424                                      HostCmd_ACT_GEN_SET, 0,
2425                                      &mef_cfg);
2426
2427         kfree(mef_entry);
2428         return ret;
2429 }
2430
2431 static int mwifiex_cfg80211_resume(struct wiphy *wiphy)
2432 {
2433         return 0;
2434 }
2435
2436 static void mwifiex_cfg80211_set_wakeup(struct wiphy *wiphy,
2437                                        bool enabled)
2438 {
2439         struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
2440
2441         device_set_wakeup_enable(adapter->dev, enabled);
2442 }
2443 #endif
2444
2445 /* station cfg80211 operations */
2446 static struct cfg80211_ops mwifiex_cfg80211_ops = {
2447         .add_virtual_intf = mwifiex_add_virtual_intf,
2448         .del_virtual_intf = mwifiex_del_virtual_intf,
2449         .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
2450         .scan = mwifiex_cfg80211_scan,
2451         .connect = mwifiex_cfg80211_connect,
2452         .disconnect = mwifiex_cfg80211_disconnect,
2453         .get_station = mwifiex_cfg80211_get_station,
2454         .dump_station = mwifiex_cfg80211_dump_station,
2455         .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
2456         .join_ibss = mwifiex_cfg80211_join_ibss,
2457         .leave_ibss = mwifiex_cfg80211_leave_ibss,
2458         .add_key = mwifiex_cfg80211_add_key,
2459         .del_key = mwifiex_cfg80211_del_key,
2460         .mgmt_tx = mwifiex_cfg80211_mgmt_tx,
2461         .mgmt_frame_register = mwifiex_cfg80211_mgmt_frame_register,
2462         .remain_on_channel = mwifiex_cfg80211_remain_on_channel,
2463         .cancel_remain_on_channel = mwifiex_cfg80211_cancel_remain_on_channel,
2464         .set_default_key = mwifiex_cfg80211_set_default_key,
2465         .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
2466         .set_tx_power = mwifiex_cfg80211_set_tx_power,
2467         .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
2468         .start_ap = mwifiex_cfg80211_start_ap,
2469         .stop_ap = mwifiex_cfg80211_stop_ap,
2470         .change_beacon = mwifiex_cfg80211_change_beacon,
2471         .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
2472         .set_antenna = mwifiex_cfg80211_set_antenna,
2473         .del_station = mwifiex_cfg80211_del_station,
2474 #ifdef CONFIG_PM
2475         .suspend = mwifiex_cfg80211_suspend,
2476         .resume = mwifiex_cfg80211_resume,
2477         .set_wakeup = mwifiex_cfg80211_set_wakeup,
2478 #endif
2479 };
2480
2481 #ifdef CONFIG_PM
2482 static const struct wiphy_wowlan_support mwifiex_wowlan_support = {
2483         .flags = WIPHY_WOWLAN_MAGIC_PKT,
2484         .n_patterns = MWIFIEX_MAX_FILTERS,
2485         .pattern_min_len = 1,
2486         .pattern_max_len = MWIFIEX_MAX_PATTERN_LEN,
2487         .max_pkt_offset = MWIFIEX_MAX_OFFSET_LEN,
2488 };
2489 #endif
2490
2491 static bool mwifiex_is_valid_alpha2(const char *alpha2)
2492 {
2493         if (!alpha2 || strlen(alpha2) != 2)
2494                 return false;
2495
2496         if (isalpha(alpha2[0]) && isalpha(alpha2[1]))
2497                 return true;
2498
2499         return false;
2500 }
2501
2502 /*
2503  * This function registers the device with CFG802.11 subsystem.
2504  *
2505  * The function creates the wireless device/wiphy, populates it with
2506  * default parameters and handler function pointers, and finally
2507  * registers the device.
2508  */
2509
2510 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
2511 {
2512         int ret;
2513         void *wdev_priv;
2514         struct wiphy *wiphy;
2515         struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
2516         u8 *country_code;
2517
2518         /* create a new wiphy for use with cfg80211 */
2519         wiphy = wiphy_new(&mwifiex_cfg80211_ops,
2520                           sizeof(struct mwifiex_adapter *));
2521         if (!wiphy) {
2522                 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
2523                 return -ENOMEM;
2524         }
2525         wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
2526         wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
2527         wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
2528         wiphy->max_remain_on_channel_duration = 5000;
2529         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2530                                  BIT(NL80211_IFTYPE_ADHOC) |
2531                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2532                                  BIT(NL80211_IFTYPE_P2P_GO) |
2533                                  BIT(NL80211_IFTYPE_AP);
2534
2535         wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
2536         if (adapter->config_bands & BAND_A)
2537                 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
2538         else
2539                 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
2540
2541         wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
2542         wiphy->n_iface_combinations = 1;
2543
2544         /* Initialize cipher suits */
2545         wiphy->cipher_suites = mwifiex_cipher_suites;
2546         wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
2547
2548         memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
2549         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2550         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
2551                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
2552                         WIPHY_FLAG_AP_UAPSD |
2553                         WIPHY_FLAG_CUSTOM_REGULATORY |
2554                         WIPHY_FLAG_STRICT_REGULATORY |
2555                         WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2556
2557         wiphy_apply_custom_regulatory(wiphy, &mwifiex_world_regdom_custom);
2558
2559 #ifdef CONFIG_PM
2560         wiphy->wowlan = &mwifiex_wowlan_support;
2561 #endif
2562
2563         wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
2564                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
2565                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
2566
2567         wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
2568         wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
2569
2570         wiphy->features |= NL80211_FEATURE_HT_IBSS |
2571                            NL80211_FEATURE_INACTIVITY_TIMER |
2572                            NL80211_FEATURE_LOW_PRIORITY_SCAN;
2573
2574         /* Reserve space for mwifiex specific private data for BSS */
2575         wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
2576
2577         wiphy->reg_notifier = mwifiex_reg_notifier;
2578
2579         /* Set struct mwifiex_adapter pointer in wiphy_priv */
2580         wdev_priv = wiphy_priv(wiphy);
2581         *(unsigned long *)wdev_priv = (unsigned long)adapter;
2582
2583         set_wiphy_dev(wiphy, priv->adapter->dev);
2584
2585         ret = wiphy_register(wiphy);
2586         if (ret < 0) {
2587                 dev_err(adapter->dev,
2588                         "%s: wiphy_register failed: %d\n", __func__, ret);
2589                 wiphy_free(wiphy);
2590                 return ret;
2591         }
2592
2593         if (reg_alpha2 && mwifiex_is_valid_alpha2(reg_alpha2)) {
2594                 wiphy_info(wiphy, "driver hint alpha2: %2.2s\n", reg_alpha2);
2595                 regulatory_hint(wiphy, reg_alpha2);
2596         } else {
2597                 country_code = mwifiex_11d_code_2_region(adapter->region_code);
2598                 if (country_code)
2599                         wiphy_info(wiphy, "ignoring F/W country code %2.2s\n",
2600                                    country_code);
2601         }
2602
2603         adapter->wiphy = wiphy;
2604         return ret;
2605 }