drivers/net/wireless/mwifiex/sta_ioctl.c

   1 /*
   2  * Marvell Wireless LAN device driver: functions for station ioctl
   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 "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27 #include "cfg80211.h"
  28
  29 static int disconnect_on_suspend = 1;
  30 module_param(disconnect_on_suspend, int, 0644);
  31
  32 /*
  33  * Copies the multicast address list from device to driver.
  34  *
  35  * This function does not validate the destination memory for
  36  * size, and the calling function must ensure enough memory is
  37  * available.
  38  */
  39 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
  40                             struct net_device *dev)
  41 {
  42         int i = 0;
  43         struct netdev_hw_addr *ha;
  44
  45         netdev_for_each_mc_addr(ha, dev)
  46                 memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);
  47
  48         return i;
  49 }
  50
  51 /*
  52  * Wait queue completion handler.
  53  *
  54  * This function waits on a cmd wait queue. It also cancels the pending
  55  * request after waking up, in case of errors.
  56  */
  57 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
  58 {
  59         int status;
  60         struct cmd_ctrl_node *cmd_queued;
  61
  62         if (!adapter->cmd_queued)
  63                 return 0;
  64
  65         cmd_queued = adapter->cmd_queued;
  66         adapter->cmd_queued = NULL;
  67
  68         dev_dbg(adapter->dev, "cmd pending\n");
  69         atomic_inc(&adapter->cmd_pending);
  70
  71         /* Wait for completion */
  72         status = wait_event_interruptible(adapter->cmd_wait_q.wait,
  73                                           *(cmd_queued->condition));
  74         if (status) {
  75                 dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status);
  76                 return status;
  77         }
  78
  79         status = adapter->cmd_wait_q.status;
  80         adapter->cmd_wait_q.status = 0;
  81
  82         return status;
  83 }
  84
  85 /*
  86  * This function prepares the correct firmware command and
  87  * issues it to set the multicast list.
  88  *
  89  * This function can be used to enable promiscuous mode, or enable all
  90  * multicast packets, or to enable selective multicast.
  91  */
  92 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  93                                 struct mwifiex_multicast_list *mcast_list)
  94 {
  95         int ret = 0;
  96         u16 old_pkt_filter;
  97
  98         old_pkt_filter = priv->curr_pkt_filter;
  99
 100         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
 101                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
 102                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 103                 priv->curr_pkt_filter &=
 104                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 105         } else {
 106                 /* Multicast */
 107                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 108                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 109                         dev_dbg(priv->adapter->dev,
 110                                 "info: Enabling All Multicast!\n");
 111                         priv->curr_pkt_filter |=
 112                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 113                 } else {
 114                         priv->curr_pkt_filter &=
 115                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 116                         if (mcast_list->num_multicast_addr) {
 117                                 dev_dbg(priv->adapter->dev,
 118                                         "info: Set multicast list=%d\n",
 119                                        mcast_list->num_multicast_addr);
 120                                 /* Set multicast addresses to firmware */
 121                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 122                                         /* Send request to firmware */
 123                                         ret = mwifiex_send_cmd_async(priv,
 124                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 125                                                 HostCmd_ACT_GEN_SET, 0,
 126                                                 mcast_list);
 127                                 } else {
 128                                         /* Send request to firmware */
 129                                         ret = mwifiex_send_cmd_async(priv,
 130                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 131                                                 HostCmd_ACT_GEN_SET, 0,
 132                                                 mcast_list);
 133                                 }
 134                         }
 135                 }
 136         }
 137         dev_dbg(priv->adapter->dev,
 138                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 139                old_pkt_filter, priv->curr_pkt_filter);
 140         if (old_pkt_filter != priv->curr_pkt_filter) {
 141                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 142                                              HostCmd_ACT_GEN_SET,
 143                                              0, &priv->curr_pkt_filter);
 144         }
 145
 146         return ret;
 147 }
 148
 149 /*
 150  * This function fills bss descriptor structure using provided
 151  * information.
 152  */
 153 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 154                               struct cfg80211_bss *bss,
 155                               struct mwifiex_bssdescriptor *bss_desc)
 156 {
 157         int ret;
 158         u8 *beacon_ie;
 159         size_t beacon_ie_len;
 160         struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
 161         const struct cfg80211_bss_ies *ies;
 162
 163         rcu_read_lock();
 164         ies = rcu_dereference(bss->ies);
 165         beacon_ie = kmemdup(ies->data, ies->len, GFP_ATOMIC);
 166         beacon_ie_len = ies->len;
 167         bss_desc->timestamp = ies->tsf;
 168         rcu_read_unlock();
 169
 170         if (!beacon_ie) {
 171                 dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 172                 return -ENOMEM;
 173         }
 174
 175         memcpy(bss_desc->mac_address, bss->bssid, ETH_ALEN);
 176         bss_desc->rssi = bss->signal;
 177         bss_desc->beacon_buf = beacon_ie;
 178         bss_desc->beacon_buf_size = beacon_ie_len;
 179         bss_desc->beacon_period = bss->beacon_interval;
 180         bss_desc->cap_info_bitmap = bss->capability;
 181         bss_desc->bss_band = bss_priv->band;
 182         bss_desc->fw_tsf = bss_priv->fw_tsf;
 183         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 184                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 185                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 186         } else {
 187                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 188         }
 189         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 190                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 191         else
 192                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 193
 194         ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
 195
 196         kfree(beacon_ie);
 197         return ret;
 198 }
 199
 200 static int mwifiex_process_country_ie(struct mwifiex_private *priv,
 201                                       struct cfg80211_bss *bss)
 202 {
 203         const u8 *country_ie;
 204         u8 country_ie_len;
 205         struct mwifiex_802_11d_domain_reg *domain_info =
 206                                         &priv->adapter->domain_reg;
 207
 208         rcu_read_lock();
 209         country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
 210         if (!country_ie) {
 211                 rcu_read_unlock();
 212                 return 0;
 213         }
 214
 215         country_ie_len = country_ie[1];
 216         if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) {
 217                 rcu_read_unlock();
 218                 return 0;
 219         }
 220
 221         domain_info->country_code[0] = country_ie[2];
 222         domain_info->country_code[1] = country_ie[3];
 223         domain_info->country_code[2] = ' ';
 224
 225         country_ie_len -= IEEE80211_COUNTRY_STRING_LEN;
 226
 227         domain_info->no_of_triplet =
 228                 country_ie_len / sizeof(struct ieee80211_country_ie_triplet);
 229
 230         memcpy((u8 *)domain_info->triplet,
 231                &country_ie[2] + IEEE80211_COUNTRY_STRING_LEN, country_ie_len);
 232
 233         rcu_read_unlock();
 234
 235         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 236                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 237                 wiphy_err(priv->adapter->wiphy,
 238                           "11D: setting domain info in FW\n");
 239                 return -1;
 240         }
 241
 242         return 0;
 243 }
 244
 245 /*
 246  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 247  * In both Ad-Hoc and infra mode, an deauthentication is performed
 248  * first.
 249  */
 250 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 251                       struct cfg80211_ssid *req_ssid)
 252 {
 253         int ret;
 254         struct mwifiex_adapter *adapter = priv->adapter;
 255         struct mwifiex_bssdescriptor *bss_desc = NULL;
 256
 257         priv->scan_block = false;
 258
 259         if (bss) {
 260                 mwifiex_process_country_ie(priv, bss);
 261
 262                 /* Allocate and fill new bss descriptor */
 263                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 264                                    GFP_KERNEL);
 265                 if (!bss_desc)
 266                         return -ENOMEM;
 267
 268                 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
 269                 if (ret)
 270                         goto done;
 271         }
 272
 273         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 274                 /* Infra mode */
 275                 ret = mwifiex_deauthenticate(priv, NULL);
 276                 if (ret)
 277                         goto done;
 278
 279                 if (bss_desc) {
 280                         u8 config_bands = 0;
 281
 282                         if (mwifiex_band_to_radio_type((u8) bss_desc->bss_band)
 283                             == HostCmd_SCAN_RADIO_TYPE_BG)
 284                                 config_bands = BAND_B | BAND_G | BAND_GN |
 285                                                BAND_GAC;
 286                         else
 287                                 config_bands = BAND_A | BAND_AN | BAND_AAC;
 288
 289                         if (!((config_bands | adapter->fw_bands) &
 290                               ~adapter->fw_bands))
 291                                 adapter->config_bands = config_bands;
 292                 }
 293
 294                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 295                 if (ret)
 296                         goto done;
 297
 298                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 299                                       "associating...\n");
 300
 301                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 302                 if (netif_carrier_ok(priv->netdev))
 303                         netif_carrier_off(priv->netdev);
 304
 305                 /* Clear any past association response stored for
 306                  * application retrieval */
 307                 priv->assoc_rsp_size = 0;
 308                 ret = mwifiex_associate(priv, bss_desc);
 309
 310                 /* If auth type is auto and association fails using open mode,
 311                  * try to connect using shared mode */
 312                 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
 313                     priv->sec_info.is_authtype_auto &&
 314                     priv->sec_info.wep_enabled) {
 315                         priv->sec_info.authentication_mode =
 316                                                 NL80211_AUTHTYPE_SHARED_KEY;
 317                         ret = mwifiex_associate(priv, bss_desc);
 318                 }
 319
 320                 if (bss)
 321                         cfg80211_put_bss(priv->adapter->wiphy, bss);
 322         } else {
 323                 /* Adhoc mode */
 324                 /* If the requested SSID matches current SSID, return */
 325                 if (bss_desc && bss_desc->ssid.ssid_len &&
 326                     (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
 327                                        ssid, &bss_desc->ssid))) {
 328                         kfree(bss_desc);
 329                         return 0;
 330                 }
 331
 332                 /* Exit Adhoc mode first */
 333                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 334                 ret = mwifiex_deauthenticate(priv, NULL);
 335                 if (ret)
 336                         goto done;
 337
 338                 priv->adhoc_is_link_sensed = false;
 339
 340                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 341
 342                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 343                 if (netif_carrier_ok(priv->netdev))
 344                         netif_carrier_off(priv->netdev);
 345
 346                 if (!ret) {
 347                         dev_dbg(adapter->dev, "info: network found in scan"
 348                                                         " list. Joining...\n");
 349                         ret = mwifiex_adhoc_join(priv, bss_desc);
 350                         if (bss)
 351                                 cfg80211_put_bss(priv->adapter->wiphy, bss);
 352                 } else {
 353                         dev_dbg(adapter->dev, "info: Network not found in "
 354                                 "the list, creating adhoc with ssid = %s\n",
 355                                 req_ssid->ssid);
 356                         ret = mwifiex_adhoc_start(priv, req_ssid);
 357                 }
 358         }
 359
 360 done:
 361         kfree(bss_desc);
 362         return ret;
 363 }
 364
 365 /*
 366  * IOCTL request handler to set host sleep configuration.
 367  *
 368  * This function prepares the correct firmware command and
 369  * issues it.
 370  */
 371 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 372                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 373
 374 {
 375         struct mwifiex_adapter *adapter = priv->adapter;
 376         int status = 0;
 377         u32 prev_cond = 0;
 378
 379         if (!hs_cfg)
 380                 return -ENOMEM;
 381
 382         switch (action) {
 383         case HostCmd_ACT_GEN_SET:
 384                 if (adapter->pps_uapsd_mode) {
 385                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 386                                 " is blocked in UAPSD/PPS mode\n");
 387                         status = -1;
 388                         break;
 389                 }
 390                 if (hs_cfg->is_invoke_hostcmd) {
 391                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 392                                 if (!adapter->is_hs_configured)
 393                                         /* Already cancelled */
 394                                         break;
 395                                 /* Save previous condition */
 396                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 397                                                         .conditions);
 398                                 adapter->hs_cfg.conditions =
 399                                                 cpu_to_le32(hs_cfg->conditions);
 400                         } else if (hs_cfg->conditions) {
 401                                 adapter->hs_cfg.conditions =
 402                                                 cpu_to_le32(hs_cfg->conditions);
 403                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 404                                 if (hs_cfg->gap)
 405                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 406                         } else if (adapter->hs_cfg.conditions
 407                                    == cpu_to_le32(HOST_SLEEP_CFG_CANCEL)) {
 408                                 /* Return failure if no parameters for HS
 409                                    enable */
 410                                 status = -1;
 411                                 break;
 412                         }
 413                         if (cmd_type == MWIFIEX_SYNC_CMD)
 414                                 status = mwifiex_send_cmd_sync(priv,
 415                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 416                                                 HostCmd_ACT_GEN_SET, 0,
 417                                                 &adapter->hs_cfg);
 418                         else
 419                                 status = mwifiex_send_cmd_async(priv,
 420                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 421                                                 HostCmd_ACT_GEN_SET, 0,
 422                                                 &adapter->hs_cfg);
 423                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 424                                 /* Restore previous condition */
 425                                 adapter->hs_cfg.conditions =
 426                                                 cpu_to_le32(prev_cond);
 427                 } else {
 428                         adapter->hs_cfg.conditions =
 429                                                 cpu_to_le32(hs_cfg->conditions);
 430                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 431                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 432                 }
 433                 break;
 434         case HostCmd_ACT_GEN_GET:
 435                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 436                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 437                 hs_cfg->gap = adapter->hs_cfg.gap;
 438                 break;
 439         default:
 440                 status = -1;
 441                 break;
 442         }
 443
 444         return status;
 445 }
 446
 447 /*
 448  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 449  *
 450  * This function allocates the IOCTL request buffer, fills it
 451  * with requisite parameters and calls the IOCTL handler.
 452  */
 453 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 454 {
 455         struct mwifiex_ds_hs_cfg hscfg;
 456
 457         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 458         hscfg.is_invoke_hostcmd = true;
 459
 460         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 461                                     cmd_type, &hscfg);
 462 }
 463 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 464
 465 /*
 466  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 467  *
 468  * This function allocates the IOCTL request buffer, fills it
 469  * with requisite parameters and calls the IOCTL handler.
 470  */
 471 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 472 {
 473         struct mwifiex_ds_hs_cfg hscfg;
 474         struct mwifiex_private *priv;
 475         int i;
 476
 477         if (disconnect_on_suspend) {
 478                 for (i = 0; i < adapter->priv_num; i++) {
 479                         priv = adapter->priv[i];
 480                         if (priv)
 481                                 mwifiex_deauthenticate(priv, NULL);
 482                 }
 483         }
 484
 485         if (adapter->hs_activated) {
 486                 dev_dbg(adapter->dev, "cmd: HS Already activated\n");
 487                 return true;
 488         }
 489
 490         adapter->hs_activate_wait_q_woken = false;
 491
 492         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 493         hscfg.is_invoke_hostcmd = true;
 494
 495         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 496                                                    MWIFIEX_BSS_ROLE_STA),
 497                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 498                                   &hscfg)) {
 499                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 500                 return false;
 501         }
 502
 503         if (wait_event_interruptible(adapter->hs_activate_wait_q,
 504                                      adapter->hs_activate_wait_q_woken)) {
 505                 dev_err(adapter->dev, "hs_activate_wait_q terminated\n");
 506                 return false;
 507         }
 508
 509         return true;
 510 }
 511 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 512
 513 /*
 514  * IOCTL request handler to get BSS information.
 515  *
 516  * This function collates the information from different driver structures
 517  * to send to the user.
 518  */
 519 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 520                          struct mwifiex_bss_info *info)
 521 {
 522         struct mwifiex_adapter *adapter = priv->adapter;
 523         struct mwifiex_bssdescriptor *bss_desc;
 524
 525         if (!info)
 526                 return -1;
 527
 528         bss_desc = &priv->curr_bss_params.bss_descriptor;
 529
 530         info->bss_mode = priv->bss_mode;
 531
 532         memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
 533
 534         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 535
 536         info->bss_chan = bss_desc->channel;
 537
 538         memcpy(info->country_code, adapter->country_code,
 539                IEEE80211_COUNTRY_STRING_LEN);
 540
 541         info->media_connected = priv->media_connected;
 542
 543         info->max_power_level = priv->max_tx_power_level;
 544         info->min_power_level = priv->min_tx_power_level;
 545
 546         info->adhoc_state = priv->adhoc_state;
 547
 548         info->bcn_nf_last = priv->bcn_nf_last;
 549
 550         if (priv->sec_info.wep_enabled)
 551                 info->wep_status = true;
 552         else
 553                 info->wep_status = false;
 554
 555         info->is_hs_configured = adapter->is_hs_configured;
 556         info->is_deep_sleep = adapter->is_deep_sleep;
 557
 558         return 0;
 559 }
 560
 561 /*
 562  * The function disables auto deep sleep mode.
 563  */
 564 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 565 {
 566         struct mwifiex_ds_auto_ds auto_ds;
 567
 568         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 569
 570         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 571                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 572 }
 573 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 574
 575 /*
 576  * Sends IOCTL request to get the data rate.
 577  *
 578  * This function allocates the IOCTL request buffer, fills it
 579  * with requisite parameters and calls the IOCTL handler.
 580  */
 581 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate)
 582 {
 583         int ret;
 584
 585         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 586                                     HostCmd_ACT_GEN_GET, 0, NULL);
 587
 588         if (!ret) {
 589                 if (priv->is_data_rate_auto)
 590                         *rate = mwifiex_index_to_data_rate(priv, priv->tx_rate,
 591                                                            priv->tx_htinfo);
 592                 else
 593                         *rate = priv->data_rate;
 594         }
 595
 596         return ret;
 597 }
 598
 599 /*
 600  * IOCTL request handler to set tx power configuration.
 601  *
 602  * This function prepares the correct firmware command and
 603  * issues it.
 604  *
 605  * For non-auto power mode, all the following power groups are set -
 606  *      - Modulation class HR/DSSS
 607  *      - Modulation class OFDM
 608  *      - Modulation class HTBW20
 609  *      - Modulation class HTBW40
 610  */
 611 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 612                          struct mwifiex_power_cfg *power_cfg)
 613 {
 614         int ret;
 615         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 616         struct mwifiex_types_power_group *pg_tlv;
 617         struct mwifiex_power_group *pg;
 618         u8 *buf;
 619         u16 dbm = 0;
 620
 621         if (!power_cfg->is_power_auto) {
 622                 dbm = (u16) power_cfg->power_level;
 623                 if ((dbm < priv->min_tx_power_level) ||
 624                     (dbm > priv->max_tx_power_level)) {
 625                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 626                                 " is out of range (%d dBm-%d dBm)\n",
 627                                 dbm, priv->min_tx_power_level,
 628                                 priv->max_tx_power_level);
 629                         return -1;
 630                 }
 631         }
 632         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 633         if (!buf)
 634                 return -ENOMEM;
 635
 636         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 637         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 638         if (!power_cfg->is_power_auto) {
 639                 txp_cfg->mode = cpu_to_le32(1);
 640                 pg_tlv = (struct mwifiex_types_power_group *)
 641                          (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
 642                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 643                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 644                 pg = (struct mwifiex_power_group *)
 645                      (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
 646                       + sizeof(struct mwifiex_types_power_group));
 647                 /* Power group for modulation class HR/DSSS */
 648                 pg->first_rate_code = 0x00;
 649                 pg->last_rate_code = 0x03;
 650                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 651                 pg->power_step = 0;
 652                 pg->power_min = (s8) dbm;
 653                 pg->power_max = (s8) dbm;
 654                 pg++;
 655                 /* Power group for modulation class OFDM */
 656                 pg->first_rate_code = 0x00;
 657                 pg->last_rate_code = 0x07;
 658                 pg->modulation_class = MOD_CLASS_OFDM;
 659                 pg->power_step = 0;
 660                 pg->power_min = (s8) dbm;
 661                 pg->power_max = (s8) dbm;
 662                 pg++;
 663                 /* Power group for modulation class HTBW20 */
 664                 pg->first_rate_code = 0x00;
 665                 pg->last_rate_code = 0x20;
 666                 pg->modulation_class = MOD_CLASS_HT;
 667                 pg->power_step = 0;
 668                 pg->power_min = (s8) dbm;
 669                 pg->power_max = (s8) dbm;
 670                 pg->ht_bandwidth = HT_BW_20;
 671                 pg++;
 672                 /* Power group for modulation class HTBW40 */
 673                 pg->first_rate_code = 0x00;
 674                 pg->last_rate_code = 0x20;
 675                 pg->modulation_class = MOD_CLASS_HT;
 676                 pg->power_step = 0;
 677                 pg->power_min = (s8) dbm;
 678                 pg->power_max = (s8) dbm;
 679                 pg->ht_bandwidth = HT_BW_40;
 680         }
 681         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 682                                     HostCmd_ACT_GEN_SET, 0, buf);
 683
 684         kfree(buf);
 685         return ret;
 686 }
 687
 688 /*
 689  * IOCTL request handler to get power save mode.
 690  *
 691  * This function prepares the correct firmware command and
 692  * issues it.
 693  */
 694 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 695 {
 696         int ret;
 697         struct mwifiex_adapter *adapter = priv->adapter;
 698         u16 sub_cmd;
 699
 700         if (*ps_mode)
 701                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 702         else
 703                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 704         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 705         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 706                                     sub_cmd, BITMAP_STA_PS, NULL);
 707         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 708                 ret = mwifiex_send_cmd_async(priv,
 709                                              HostCmd_CMD_802_11_PS_MODE_ENH,
 710                                              GET_PS, 0, NULL);
 711
 712         return ret;
 713 }
 714
 715 /*
 716  * IOCTL request handler to set/reset WPA IE.
 717  *
 718  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 719  * is checked to determine WPA version. If buffer length is zero, the existing
 720  * WPA IE is reset.
 721  */
 722 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 723                                      u8 *ie_data_ptr, u16 ie_len)
 724 {
 725         if (ie_len) {
 726                 if (ie_len > sizeof(priv->wpa_ie)) {
 727                         dev_err(priv->adapter->dev,
 728                                 "failed to copy WPA IE, too big\n");
 729                         return -1;
 730                 }
 731                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 732                 priv->wpa_ie_len = (u8) ie_len;
 733                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 734                         priv->wpa_ie_len, priv->wpa_ie[0]);
 735
 736                 if (priv->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
 737                         priv->sec_info.wpa_enabled = true;
 738                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 739                         priv->sec_info.wpa2_enabled = true;
 740                 } else {
 741                         priv->sec_info.wpa_enabled = false;
 742                         priv->sec_info.wpa2_enabled = false;
 743                 }
 744         } else {
 745                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 746                 priv->wpa_ie_len = 0;
 747                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 748                         priv->wpa_ie_len, priv->wpa_ie[0]);
 749                 priv->sec_info.wpa_enabled = false;
 750                 priv->sec_info.wpa2_enabled = false;
 751         }
 752
 753         return 0;
 754 }
 755
 756 /*
 757  * IOCTL request handler to set/reset WAPI IE.
 758  *
 759  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 760  * is checked to internally enable WAPI. If buffer length is zero, the existing
 761  * WAPI IE is reset.
 762  */
 763 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 764                                u8 *ie_data_ptr, u16 ie_len)
 765 {
 766         if (ie_len) {
 767                 if (ie_len > sizeof(priv->wapi_ie)) {
 768                         dev_dbg(priv->adapter->dev,
 769                                 "info: failed to copy WAPI IE, too big\n");
 770                         return -1;
 771                 }
 772                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 773                 priv->wapi_ie_len = ie_len;
 774                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 775                         priv->wapi_ie_len, priv->wapi_ie[0]);
 776
 777                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 778                         priv->sec_info.wapi_enabled = true;
 779         } else {
 780                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 781                 priv->wapi_ie_len = ie_len;
 782                 dev_dbg(priv->adapter->dev,
 783                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 784                        priv->wapi_ie_len, priv->wapi_ie[0]);
 785                 priv->sec_info.wapi_enabled = false;
 786         }
 787         return 0;
 788 }
 789
 790 /*
 791  * IOCTL request handler to set/reset WPS IE.
 792  *
 793  * The supplied WPS IE is treated as a opaque buffer. Only the first field
 794  * is checked to internally enable WPS. If buffer length is zero, the existing
 795  * WPS IE is reset.
 796  */
 797 static int mwifiex_set_wps_ie(struct mwifiex_private *priv,
 798                                u8 *ie_data_ptr, u16 ie_len)
 799 {
 800         if (ie_len) {
 801                 priv->wps_ie = kzalloc(MWIFIEX_MAX_VSIE_LEN, GFP_KERNEL);
 802                 if (!priv->wps_ie)
 803                         return -ENOMEM;
 804                 if (ie_len > sizeof(priv->wps_ie)) {
 805                         dev_dbg(priv->adapter->dev,
 806                                 "info: failed to copy WPS IE, too big\n");
 807                         kfree(priv->wps_ie);
 808                         return -1;
 809                 }
 810                 memcpy(priv->wps_ie, ie_data_ptr, ie_len);
 811                 priv->wps_ie_len = ie_len;
 812                 dev_dbg(priv->adapter->dev, "cmd: Set wps_ie_len=%d IE=%#x\n",
 813                         priv->wps_ie_len, priv->wps_ie[0]);
 814         } else {
 815                 kfree(priv->wps_ie);
 816                 priv->wps_ie_len = ie_len;
 817                 dev_dbg(priv->adapter->dev,
 818                         "info: Reset wps_ie_len=%d\n", priv->wps_ie_len);
 819         }
 820         return 0;
 821 }
 822
 823 /*
 824  * IOCTL request handler to set WAPI key.
 825  *
 826  * This function prepares the correct firmware command and
 827  * issues it.
 828  */
 829 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
 830                                struct mwifiex_ds_encrypt_key *encrypt_key)
 831 {
 832
 833         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 834                                      HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
 835                                      encrypt_key);
 836 }
 837
 838 /*
 839  * IOCTL request handler to set WEP network key.
 840  *
 841  * This function prepares the correct firmware command and
 842  * issues it, after validation checks.
 843  */
 844 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 845                               struct mwifiex_ds_encrypt_key *encrypt_key)
 846 {
 847         int ret;
 848         struct mwifiex_wep_key *wep_key;
 849         int index;
 850
 851         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
 852                 priv->wep_key_curr_index = 0;
 853         wep_key = &priv->wep_key[priv->wep_key_curr_index];
 854         index = encrypt_key->key_index;
 855         if (encrypt_key->key_disable) {
 856                 priv->sec_info.wep_enabled = 0;
 857         } else if (!encrypt_key->key_len) {
 858                 /* Copy the required key as the current key */
 859                 wep_key = &priv->wep_key[index];
 860                 if (!wep_key->key_length) {
 861                         dev_err(priv->adapter->dev,
 862                                 "key not set, so cannot enable it\n");
 863                         return -1;
 864                 }
 865                 priv->wep_key_curr_index = (u16) index;
 866                 priv->sec_info.wep_enabled = 1;
 867         } else {
 868                 wep_key = &priv->wep_key[index];
 869                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 870                 /* Copy the key in the driver */
 871                 memcpy(wep_key->key_material,
 872                        encrypt_key->key_material,
 873                        encrypt_key->key_len);
 874                 wep_key->key_index = index;
 875                 wep_key->key_length = encrypt_key->key_len;
 876                 priv->sec_info.wep_enabled = 1;
 877         }
 878         if (wep_key->key_length) {
 879                 /* Send request to firmware */
 880                 ret = mwifiex_send_cmd_async(priv,
 881                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 882                                              HostCmd_ACT_GEN_SET, 0, NULL);
 883                 if (ret)
 884                         return ret;
 885         }
 886         if (priv->sec_info.wep_enabled)
 887                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
 888         else
 889                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
 890
 891         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
 892                                     HostCmd_ACT_GEN_SET, 0,
 893                                     &priv->curr_pkt_filter);
 894
 895         return ret;
 896 }
 897
 898 /*
 899  * IOCTL request handler to set WPA key.
 900  *
 901  * This function prepares the correct firmware command and
 902  * issues it, after validation checks.
 903  *
 904  * Current driver only supports key length of up to 32 bytes.
 905  *
 906  * This function can also be used to disable a currently set key.
 907  */
 908 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
 909                               struct mwifiex_ds_encrypt_key *encrypt_key)
 910 {
 911         int ret;
 912         u8 remove_key = false;
 913         struct host_cmd_ds_802_11_key_material *ibss_key;
 914
 915         /* Current driver only supports key length of up to 32 bytes */
 916         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
 917                 dev_err(priv->adapter->dev, "key length too long\n");
 918                 return -1;
 919         }
 920
 921         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 922                 /*
 923                  * IBSS/WPA-None uses only one key (Group) for both receiving
 924                  * and sending unicast and multicast packets.
 925                  */
 926                 /* Send the key as PTK to firmware */
 927                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 928                 ret = mwifiex_send_cmd_async(priv,
 929                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 930                                              HostCmd_ACT_GEN_SET,
 931                                              KEY_INFO_ENABLED, encrypt_key);
 932                 if (ret)
 933                         return ret;
 934
 935                 ibss_key = &priv->aes_key;
 936                 memset(ibss_key, 0,
 937                        sizeof(struct host_cmd_ds_802_11_key_material));
 938                 /* Copy the key in the driver */
 939                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
 940                        encrypt_key->key_len);
 941                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
 942                        sizeof(ibss_key->key_param_set.key_len));
 943                 ibss_key->key_param_set.key_type_id
 944                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
 945                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
 946
 947                 /* Send the key as GTK to firmware */
 948                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
 949         }
 950
 951         if (!encrypt_key->key_index)
 952                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 953
 954         if (remove_key)
 955                 ret = mwifiex_send_cmd_sync(priv,
 956                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 957                                             HostCmd_ACT_GEN_SET,
 958                                             !KEY_INFO_ENABLED, encrypt_key);
 959         else
 960                 ret = mwifiex_send_cmd_sync(priv,
 961                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 962                                             HostCmd_ACT_GEN_SET,
 963                                             KEY_INFO_ENABLED, encrypt_key);
 964
 965         return ret;
 966 }
 967
 968 /*
 969  * IOCTL request handler to set/get network keys.
 970  *
 971  * This is a generic key handling function which supports WEP, WPA
 972  * and WAPI.
 973  */
 974 static int
 975 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
 976                               struct mwifiex_ds_encrypt_key *encrypt_key)
 977 {
 978         int status;
 979
 980         if (encrypt_key->is_wapi_key)
 981                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
 982         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
 983                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
 984         else
 985                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
 986         return status;
 987 }
 988
 989 /*
 990  * This function returns the driver version.
 991  */
 992 int
 993 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
 994                                int max_len)
 995 {
 996         union {
 997                 u32 l;
 998                 u8 c[4];
 999         } ver;
1000         char fw_ver[32];
1001
1002         ver.l = adapter->fw_release_number;
1003         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1004
1005         snprintf(version, max_len, driver_version, fw_ver);
1006
1007         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1008
1009         return 0;
1010 }
1011
1012 /*
1013  * Sends IOCTL request to set encoding parameters.
1014  *
1015  * This function allocates the IOCTL request buffer, fills it
1016  * with requisite parameters and calls the IOCTL handler.
1017  */
1018 int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
1019                        const u8 *key, int key_len, u8 key_index,
1020                        const u8 *mac_addr, int disable)
1021 {
1022         struct mwifiex_ds_encrypt_key encrypt_key;
1023
1024         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1025         encrypt_key.key_len = key_len;
1026
1027         if (kp && kp->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1028                 encrypt_key.is_igtk_key = true;
1029
1030         if (!disable) {
1031                 encrypt_key.key_index = key_index;
1032                 if (key_len)
1033                         memcpy(encrypt_key.key_material, key, key_len);
1034                 if (mac_addr)
1035                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1036                 if (kp && kp->seq && kp->seq_len)
1037                         memcpy(encrypt_key.pn, kp->seq, kp->seq_len);
1038         } else {
1039                 encrypt_key.key_disable = true;
1040                 if (mac_addr)
1041                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1042         }
1043
1044         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1045 }
1046
1047 /*
1048  * Sends IOCTL request to get extended version.
1049  *
1050  * This function allocates the IOCTL request buffer, fills it
1051  * with requisite parameters and calls the IOCTL handler.
1052  */
1053 int
1054 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1055 {
1056         struct mwifiex_ver_ext ver_ext;
1057
1058         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1059         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1060                                   HostCmd_ACT_GEN_GET, 0, &ver_ext))
1061                 return -1;
1062
1063         return 0;
1064 }
1065
1066 int
1067 mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
1068                            struct ieee80211_channel *chan,
1069                            unsigned int duration)
1070 {
1071         struct host_cmd_ds_remain_on_chan roc_cfg;
1072         u8 sc;
1073
1074         memset(&roc_cfg, 0, sizeof(roc_cfg));
1075         roc_cfg.action = cpu_to_le16(action);
1076         if (action == HostCmd_ACT_GEN_SET) {
1077                 roc_cfg.band_cfg = chan->band;
1078                 sc = mwifiex_chan_type_to_sec_chan_offset(NL80211_CHAN_NO_HT);
1079                 roc_cfg.band_cfg |= (sc << 2);
1080
1081                 roc_cfg.channel =
1082                         ieee80211_frequency_to_channel(chan->center_freq);
1083                 roc_cfg.duration = cpu_to_le32(duration);
1084         }
1085         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_REMAIN_ON_CHAN,
1086                                   action, 0, &roc_cfg)) {
1087                 dev_err(priv->adapter->dev, "failed to remain on channel\n");
1088                 return -1;
1089         }
1090
1091         return roc_cfg.status;
1092 }
1093
1094 int
1095 mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role)
1096 {
1097         if (GET_BSS_ROLE(priv) == bss_role) {
1098                 dev_dbg(priv->adapter->dev,
1099                         "info: already in the desired role.\n");
1100                 return 0;
1101         }
1102
1103         mwifiex_free_priv(priv);
1104         mwifiex_init_priv(priv);
1105
1106         priv->bss_role = bss_role;
1107         switch (bss_role) {
1108         case MWIFIEX_BSS_ROLE_UAP:
1109                 priv->bss_mode = NL80211_IFTYPE_AP;
1110                 break;
1111         case MWIFIEX_BSS_ROLE_STA:
1112         case MWIFIEX_BSS_ROLE_ANY:
1113         default:
1114                 priv->bss_mode = NL80211_IFTYPE_STATION;
1115                 break;
1116         }
1117
1118         mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
1119                               HostCmd_ACT_GEN_SET, 0, NULL);
1120
1121         return mwifiex_sta_init_cmd(priv, false);
1122 }
1123
1124 /*
1125  * Sends IOCTL request to get statistics information.
1126  *
1127  * This function allocates the IOCTL request buffer, fills it
1128  * with requisite parameters and calls the IOCTL handler.
1129  */
1130 int
1131 mwifiex_get_stats_info(struct mwifiex_private *priv,
1132                        struct mwifiex_ds_get_stats *log)
1133 {
1134         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1135                                      HostCmd_ACT_GEN_GET, 0, log);
1136 }
1137
1138 /*
1139  * IOCTL request handler to read/write register.
1140  *
1141  * This function prepares the correct firmware command and
1142  * issues it.
1143  *
1144  * Access to the following registers are supported -
1145  *      - MAC
1146  *      - BBP
1147  *      - RF
1148  *      - PMIC
1149  *      - CAU
1150  */
1151 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1152                                         struct mwifiex_ds_reg_rw *reg_rw,
1153                                         u16 action)
1154 {
1155         u16 cmd_no;
1156
1157         switch (le32_to_cpu(reg_rw->type)) {
1158         case MWIFIEX_REG_MAC:
1159                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1160                 break;
1161         case MWIFIEX_REG_BBP:
1162                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1163                 break;
1164         case MWIFIEX_REG_RF:
1165                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1166                 break;
1167         case MWIFIEX_REG_PMIC:
1168                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1169                 break;
1170         case MWIFIEX_REG_CAU:
1171                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1172                 break;
1173         default:
1174                 return -1;
1175         }
1176
1177         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1178
1179 }
1180
1181 /*
1182  * Sends IOCTL request to write to a register.
1183  *
1184  * This function allocates the IOCTL request buffer, fills it
1185  * with requisite parameters and calls the IOCTL handler.
1186  */
1187 int
1188 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1189                   u32 reg_offset, u32 reg_value)
1190 {
1191         struct mwifiex_ds_reg_rw reg_rw;
1192
1193         reg_rw.type = cpu_to_le32(reg_type);
1194         reg_rw.offset = cpu_to_le32(reg_offset);
1195         reg_rw.value = cpu_to_le32(reg_value);
1196
1197         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1198 }
1199
1200 /*
1201  * Sends IOCTL request to read from a register.
1202  *
1203  * This function allocates the IOCTL request buffer, fills it
1204  * with requisite parameters and calls the IOCTL handler.
1205  */
1206 int
1207 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1208                  u32 reg_offset, u32 *value)
1209 {
1210         int ret;
1211         struct mwifiex_ds_reg_rw reg_rw;
1212
1213         reg_rw.type = cpu_to_le32(reg_type);
1214         reg_rw.offset = cpu_to_le32(reg_offset);
1215         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1216
1217         if (ret)
1218                 goto done;
1219
1220         *value = le32_to_cpu(reg_rw.value);
1221
1222 done:
1223         return ret;
1224 }
1225
1226 /*
1227  * Sends IOCTL request to read from EEPROM.
1228  *
1229  * This function allocates the IOCTL request buffer, fills it
1230  * with requisite parameters and calls the IOCTL handler.
1231  */
1232 int
1233 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1234                     u8 *value)
1235 {
1236         int ret;
1237         struct mwifiex_ds_read_eeprom rd_eeprom;
1238
1239         rd_eeprom.offset = cpu_to_le16((u16) offset);
1240         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1241
1242         /* Send request to firmware */
1243         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1244                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1245
1246         if (!ret)
1247                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1248         return ret;
1249 }
1250
1251 /*
1252  * This function sets a generic IE. In addition to generic IE, it can
1253  * also handle WPA, WPA2 and WAPI IEs.
1254  */
1255 static int
1256 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1257                           u16 ie_len)
1258 {
1259         int ret = 0;
1260         struct ieee_types_vendor_header *pvendor_ie;
1261         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1262         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1263
1264         /* If the passed length is zero, reset the buffer */
1265         if (!ie_len) {
1266                 priv->gen_ie_buf_len = 0;
1267                 priv->wps.session_enable = false;
1268
1269                 return 0;
1270         } else if (!ie_data_ptr) {
1271                 return -1;
1272         }
1273         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1274         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1275         if (((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1276              (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1277             (pvendor_ie->element_id == WLAN_EID_RSN)) {
1278
1279                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1280                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1281                 priv->wps.session_enable = false;
1282
1283                 return ret;
1284         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1285                 /* IE is a WAPI IE so call set_wapi function */
1286                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1287
1288                 return ret;
1289         }
1290         /*
1291          * Verify that the passed length is not larger than the
1292          * available space remaining in the buffer
1293          */
1294         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1295
1296                 /* Test to see if it is a WPS IE, if so, enable
1297                  * wps session flag
1298                  */
1299                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1300                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1301                     (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1302                         priv->wps.session_enable = true;
1303                         dev_dbg(priv->adapter->dev,
1304                                 "info: WPS Session Enabled.\n");
1305                         ret = mwifiex_set_wps_ie(priv, ie_data_ptr, ie_len);
1306                 }
1307
1308                 /* Append the passed data to the end of the
1309                    genIeBuffer */
1310                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1311                        ie_len);
1312                 /* Increment the stored buffer length by the
1313                    size passed */
1314                 priv->gen_ie_buf_len += ie_len;
1315         } else {
1316                 /* Passed data does not fit in the remaining
1317                    buffer space */
1318                 ret = -1;
1319         }
1320
1321         /* Return 0, or -1 for error case */
1322         return ret;
1323 }
1324
1325 /*
1326  * IOCTL request handler to set/get generic IE.
1327  *
1328  * In addition to various generic IEs, this function can also be
1329  * used to set the ARP filter.
1330  */
1331 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1332                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1333                                      u16 action)
1334 {
1335         struct mwifiex_adapter *adapter = priv->adapter;
1336
1337         switch (gen_ie->type) {
1338         case MWIFIEX_IE_TYPE_GEN_IE:
1339                 if (action == HostCmd_ACT_GEN_GET) {
1340                         gen_ie->len = priv->wpa_ie_len;
1341                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1342                 } else {
1343                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1344                                                   (u16) gen_ie->len);
1345                 }
1346                 break;
1347         case MWIFIEX_IE_TYPE_ARP_FILTER:
1348                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1349                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1350                         adapter->arp_filter_size = 0;
1351                         dev_err(adapter->dev, "invalid ARP filter size\n");
1352                         return -1;
1353                 } else {
1354                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1355                                gen_ie->len);
1356                         adapter->arp_filter_size = gen_ie->len;
1357                 }
1358                 break;
1359         default:
1360                 dev_err(adapter->dev, "invalid IE type\n");
1361                 return -1;
1362         }
1363         return 0;
1364 }
1365
1366 /*
1367  * Sends IOCTL request to set a generic IE.
1368  *
1369  * This function allocates the IOCTL request buffer, fills it
1370  * with requisite parameters and calls the IOCTL handler.
1371  */
1372 int
1373 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1374 {
1375         struct mwifiex_ds_misc_gen_ie gen_ie;
1376
1377         if (ie_len > IEEE_MAX_IE_SIZE)
1378                 return -EFAULT;
1379
1380         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1381         gen_ie.len = ie_len;
1382         memcpy(gen_ie.ie_data, ie, ie_len);
1383         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1384                 return -EFAULT;
1385
1386         return 0;
1387 }