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                                 struct cmd_ctrl_node *cmd_queued)
  59 {
  60         int status;
  61
  62         /* Wait for completion */
  63         status = wait_event_interruptible(adapter->cmd_wait_q.wait,
  64                                           *(cmd_queued->condition));
  65         if (status) {
  66                 dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status);
  67                 return status;
  68         }
  69
  70         status = adapter->cmd_wait_q.status;
  71         adapter->cmd_wait_q.status = 0;
  72
  73         return status;
  74 }
  75
  76 /*
  77  * This function prepares the correct firmware command and
  78  * issues it to set the multicast list.
  79  *
  80  * This function can be used to enable promiscuous mode, or enable all
  81  * multicast packets, or to enable selective multicast.
  82  */
  83 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  84                                 struct mwifiex_multicast_list *mcast_list)
  85 {
  86         int ret = 0;
  87         u16 old_pkt_filter;
  88
  89         old_pkt_filter = priv->curr_pkt_filter;
  90
  91         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
  92                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
  93                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
  94                 priv->curr_pkt_filter &=
  95                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
  96         } else {
  97                 /* Multicast */
  98                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
  99                 if (mcast_list->mode == MWIFIEX_ALL_MULTI_MODE) {
 100                         dev_dbg(priv->adapter->dev,
 101                                 "info: Enabling All Multicast!\n");
 102                         priv->curr_pkt_filter |=
 103                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 104                 } else {
 105                         priv->curr_pkt_filter &=
 106                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 107                         if (mcast_list->num_multicast_addr) {
 108                                 dev_dbg(priv->adapter->dev,
 109                                         "info: Set multicast list=%d\n",
 110                                        mcast_list->num_multicast_addr);
 111                                 /* Send multicast addresses to firmware */
 112                                 ret = mwifiex_send_cmd_async(priv,
 113                                         HostCmd_CMD_MAC_MULTICAST_ADR,
 114                                         HostCmd_ACT_GEN_SET, 0,
 115                                         mcast_list);
 116                         }
 117                 }
 118         }
 119         dev_dbg(priv->adapter->dev,
 120                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 121                old_pkt_filter, priv->curr_pkt_filter);
 122         if (old_pkt_filter != priv->curr_pkt_filter) {
 123                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 124                                              HostCmd_ACT_GEN_SET,
 125                                              0, &priv->curr_pkt_filter);
 126         }
 127
 128         return ret;
 129 }
 130
 131 /*
 132  * This function fills bss descriptor structure using provided
 133  * information.
 134  * beacon_ie buffer is allocated in this function. It is caller's
 135  * responsibility to free the memory.
 136  */
 137 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 138                               struct cfg80211_bss *bss,
 139                               struct mwifiex_bssdescriptor *bss_desc)
 140 {
 141         u8 *beacon_ie;
 142         size_t beacon_ie_len;
 143         struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
 144         const struct cfg80211_bss_ies *ies;
 145
 146         rcu_read_lock();
 147         ies = rcu_dereference(bss->ies);
 148         beacon_ie = kmemdup(ies->data, ies->len, GFP_ATOMIC);
 149         beacon_ie_len = ies->len;
 150         bss_desc->timestamp = ies->tsf;
 151         rcu_read_unlock();
 152
 153         if (!beacon_ie) {
 154                 dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 155                 return -ENOMEM;
 156         }
 157
 158         memcpy(bss_desc->mac_address, bss->bssid, ETH_ALEN);
 159         bss_desc->rssi = bss->signal;
 160         /* The caller of this function will free beacon_ie */
 161         bss_desc->beacon_buf = beacon_ie;
 162         bss_desc->beacon_buf_size = beacon_ie_len;
 163         bss_desc->beacon_period = bss->beacon_interval;
 164         bss_desc->cap_info_bitmap = bss->capability;
 165         bss_desc->bss_band = bss_priv->band;
 166         bss_desc->fw_tsf = bss_priv->fw_tsf;
 167         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 168                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 169                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 170         } else {
 171                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 172         }
 173         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 174                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 175         else
 176                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 177
 178         /* Disable 11ac by default. Enable it only where there
 179          * exist VHT_CAP IE in AP beacon
 180          */
 181         bss_desc->disable_11ac = true;
 182
 183         return mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
 184 }
 185
 186 static int mwifiex_process_country_ie(struct mwifiex_private *priv,
 187                                       struct cfg80211_bss *bss)
 188 {
 189         const u8 *country_ie;
 190         u8 country_ie_len;
 191         struct mwifiex_802_11d_domain_reg *domain_info =
 192                                         &priv->adapter->domain_reg;
 193
 194         rcu_read_lock();
 195         country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
 196         if (!country_ie) {
 197                 rcu_read_unlock();
 198                 return 0;
 199         }
 200
 201         country_ie_len = country_ie[1];
 202         if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) {
 203                 rcu_read_unlock();
 204                 return 0;
 205         }
 206
 207         domain_info->country_code[0] = country_ie[2];
 208         domain_info->country_code[1] = country_ie[3];
 209         domain_info->country_code[2] = ' ';
 210
 211         country_ie_len -= IEEE80211_COUNTRY_STRING_LEN;
 212
 213         domain_info->no_of_triplet =
 214                 country_ie_len / sizeof(struct ieee80211_country_ie_triplet);
 215
 216         memcpy((u8 *)domain_info->triplet,
 217                &country_ie[2] + IEEE80211_COUNTRY_STRING_LEN, country_ie_len);
 218
 219         rcu_read_unlock();
 220
 221         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 222                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 223                 wiphy_err(priv->adapter->wiphy,
 224                           "11D: setting domain info in FW\n");
 225                 return -1;
 226         }
 227
 228         return 0;
 229 }
 230
 231 /*
 232  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 233  * In both Ad-Hoc and infra mode, an deauthentication is performed
 234  * first.
 235  */
 236 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 237                       struct cfg80211_ssid *req_ssid)
 238 {
 239         int ret;
 240         struct mwifiex_adapter *adapter = priv->adapter;
 241         struct mwifiex_bssdescriptor *bss_desc = NULL;
 242
 243         priv->scan_block = false;
 244
 245         if (bss) {
 246                 mwifiex_process_country_ie(priv, bss);
 247
 248                 /* Allocate and fill new bss descriptor */
 249                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 250                                    GFP_KERNEL);
 251                 if (!bss_desc)
 252                         return -ENOMEM;
 253
 254                 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
 255                 if (ret)
 256                         goto done;
 257         }
 258
 259         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 260                 /* Infra mode */
 261                 ret = mwifiex_deauthenticate(priv, NULL);
 262                 if (ret)
 263                         goto done;
 264
 265                 if (bss_desc) {
 266                         u8 config_bands = 0;
 267
 268                         if (mwifiex_band_to_radio_type((u8) bss_desc->bss_band)
 269                             == HostCmd_SCAN_RADIO_TYPE_BG)
 270                                 config_bands = BAND_B | BAND_G | BAND_GN |
 271                                                BAND_GAC;
 272                         else
 273                                 config_bands = BAND_A | BAND_AN | BAND_AAC;
 274
 275                         if (!((config_bands | adapter->fw_bands) &
 276                               ~adapter->fw_bands))
 277                                 adapter->config_bands = config_bands;
 278                 }
 279
 280                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 281                 if (ret)
 282                         goto done;
 283
 284                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 285                                       "associating...\n");
 286
 287                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 288                 if (netif_carrier_ok(priv->netdev))
 289                         netif_carrier_off(priv->netdev);
 290
 291                 /* Clear any past association response stored for
 292                  * application retrieval */
 293                 priv->assoc_rsp_size = 0;
 294                 ret = mwifiex_associate(priv, bss_desc);
 295
 296                 /* If auth type is auto and association fails using open mode,
 297                  * try to connect using shared mode */
 298                 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
 299                     priv->sec_info.is_authtype_auto &&
 300                     priv->sec_info.wep_enabled) {
 301                         priv->sec_info.authentication_mode =
 302                                                 NL80211_AUTHTYPE_SHARED_KEY;
 303                         ret = mwifiex_associate(priv, bss_desc);
 304                 }
 305
 306                 if (bss)
 307                         cfg80211_put_bss(priv->adapter->wiphy, bss);
 308         } else {
 309                 /* Adhoc mode */
 310                 /* If the requested SSID matches current SSID, return */
 311                 if (bss_desc && bss_desc->ssid.ssid_len &&
 312                     (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
 313                                        ssid, &bss_desc->ssid))) {
 314                         kfree(bss_desc);
 315                         return 0;
 316                 }
 317
 318                 /* Exit Adhoc mode first */
 319                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 320                 ret = mwifiex_deauthenticate(priv, NULL);
 321                 if (ret)
 322                         goto done;
 323
 324                 priv->adhoc_is_link_sensed = false;
 325
 326                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 327
 328                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 329                 if (netif_carrier_ok(priv->netdev))
 330                         netif_carrier_off(priv->netdev);
 331
 332                 if (!ret) {
 333                         dev_dbg(adapter->dev, "info: network found in scan"
 334                                                         " list. Joining...\n");
 335                         ret = mwifiex_adhoc_join(priv, bss_desc);
 336                         if (bss)
 337                                 cfg80211_put_bss(priv->adapter->wiphy, bss);
 338                 } else {
 339                         dev_dbg(adapter->dev, "info: Network not found in "
 340                                 "the list, creating adhoc with ssid = %s\n",
 341                                 req_ssid->ssid);
 342                         ret = mwifiex_adhoc_start(priv, req_ssid);
 343                 }
 344         }
 345
 346 done:
 347         /* beacon_ie buffer was allocated in function
 348          * mwifiex_fill_new_bss_desc(). Free it now.
 349          */
 350         if (bss_desc)
 351                 kfree(bss_desc->beacon_buf);
 352         kfree(bss_desc);
 353         return ret;
 354 }
 355
 356 /*
 357  * IOCTL request handler to set host sleep configuration.
 358  *
 359  * This function prepares the correct firmware command and
 360  * issues it.
 361  */
 362 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 363                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 364
 365 {
 366         struct mwifiex_adapter *adapter = priv->adapter;
 367         int status = 0;
 368         u32 prev_cond = 0;
 369
 370         if (!hs_cfg)
 371                 return -ENOMEM;
 372
 373         switch (action) {
 374         case HostCmd_ACT_GEN_SET:
 375                 if (adapter->pps_uapsd_mode) {
 376                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 377                                 " is blocked in UAPSD/PPS mode\n");
 378                         status = -1;
 379                         break;
 380                 }
 381                 if (hs_cfg->is_invoke_hostcmd) {
 382                         if (hs_cfg->conditions == HS_CFG_CANCEL) {
 383                                 if (!adapter->is_hs_configured)
 384                                         /* Already cancelled */
 385                                         break;
 386                                 /* Save previous condition */
 387                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 388                                                         .conditions);
 389                                 adapter->hs_cfg.conditions =
 390                                                 cpu_to_le32(hs_cfg->conditions);
 391                         } else if (hs_cfg->conditions) {
 392                                 adapter->hs_cfg.conditions =
 393                                                 cpu_to_le32(hs_cfg->conditions);
 394                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 395                                 if (hs_cfg->gap)
 396                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 397                         } else if (adapter->hs_cfg.conditions ==
 398                                    cpu_to_le32(HS_CFG_CANCEL)) {
 399                                 /* Return failure if no parameters for HS
 400                                    enable */
 401                                 status = -1;
 402                                 break;
 403                         }
 404                         if (cmd_type == MWIFIEX_SYNC_CMD)
 405                                 status = mwifiex_send_cmd_sync(priv,
 406                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 407                                                 HostCmd_ACT_GEN_SET, 0,
 408                                                 &adapter->hs_cfg);
 409                         else
 410                                 status = mwifiex_send_cmd_async(priv,
 411                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 412                                                 HostCmd_ACT_GEN_SET, 0,
 413                                                 &adapter->hs_cfg);
 414                         if (hs_cfg->conditions == HS_CFG_CANCEL)
 415                                 /* Restore previous condition */
 416                                 adapter->hs_cfg.conditions =
 417                                                 cpu_to_le32(prev_cond);
 418                 } else {
 419                         adapter->hs_cfg.conditions =
 420                                                 cpu_to_le32(hs_cfg->conditions);
 421                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 422                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 423                 }
 424                 break;
 425         case HostCmd_ACT_GEN_GET:
 426                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 427                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 428                 hs_cfg->gap = adapter->hs_cfg.gap;
 429                 break;
 430         default:
 431                 status = -1;
 432                 break;
 433         }
 434
 435         return status;
 436 }
 437
 438 /*
 439  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 440  *
 441  * This function allocates the IOCTL request buffer, fills it
 442  * with requisite parameters and calls the IOCTL handler.
 443  */
 444 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 445 {
 446         struct mwifiex_ds_hs_cfg hscfg;
 447
 448         hscfg.conditions = HS_CFG_CANCEL;
 449         hscfg.is_invoke_hostcmd = true;
 450
 451         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 452                                     cmd_type, &hscfg);
 453 }
 454 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 455
 456 /*
 457  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 458  *
 459  * This function allocates the IOCTL request buffer, fills it
 460  * with requisite parameters and calls the IOCTL handler.
 461  */
 462 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 463 {
 464         struct mwifiex_ds_hs_cfg hscfg;
 465         struct mwifiex_private *priv;
 466         int i;
 467
 468         if (disconnect_on_suspend) {
 469                 for (i = 0; i < adapter->priv_num; i++) {
 470                         priv = adapter->priv[i];
 471                         if (priv)
 472                                 mwifiex_deauthenticate(priv, NULL);
 473                 }
 474         }
 475
 476         if (adapter->hs_activated) {
 477                 dev_dbg(adapter->dev, "cmd: HS Already activated\n");
 478                 return true;
 479         }
 480
 481         adapter->hs_activate_wait_q_woken = false;
 482
 483         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 484         hscfg.is_invoke_hostcmd = true;
 485
 486         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 487                                                    MWIFIEX_BSS_ROLE_STA),
 488                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 489                                   &hscfg)) {
 490                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 491                 return false;
 492         }
 493
 494         if (wait_event_interruptible(adapter->hs_activate_wait_q,
 495                                      adapter->hs_activate_wait_q_woken)) {
 496                 dev_err(adapter->dev, "hs_activate_wait_q terminated\n");
 497                 return false;
 498         }
 499
 500         return true;
 501 }
 502 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 503
 504 /*
 505  * IOCTL request handler to get BSS information.
 506  *
 507  * This function collates the information from different driver structures
 508  * to send to the user.
 509  */
 510 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 511                          struct mwifiex_bss_info *info)
 512 {
 513         struct mwifiex_adapter *adapter = priv->adapter;
 514         struct mwifiex_bssdescriptor *bss_desc;
 515
 516         if (!info)
 517                 return -1;
 518
 519         bss_desc = &priv->curr_bss_params.bss_descriptor;
 520
 521         info->bss_mode = priv->bss_mode;
 522
 523         memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
 524
 525         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 526
 527         info->bss_chan = bss_desc->channel;
 528
 529         memcpy(info->country_code, adapter->country_code,
 530                IEEE80211_COUNTRY_STRING_LEN);
 531
 532         info->media_connected = priv->media_connected;
 533
 534         info->max_power_level = priv->max_tx_power_level;
 535         info->min_power_level = priv->min_tx_power_level;
 536
 537         info->adhoc_state = priv->adhoc_state;
 538
 539         info->bcn_nf_last = priv->bcn_nf_last;
 540
 541         if (priv->sec_info.wep_enabled)
 542                 info->wep_status = true;
 543         else
 544                 info->wep_status = false;
 545
 546         info->is_hs_configured = adapter->is_hs_configured;
 547         info->is_deep_sleep = adapter->is_deep_sleep;
 548
 549         return 0;
 550 }
 551
 552 /*
 553  * The function disables auto deep sleep mode.
 554  */
 555 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 556 {
 557         struct mwifiex_ds_auto_ds auto_ds;
 558
 559         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 560
 561         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 562                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 563 }
 564 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 565
 566 /*
 567  * Sends IOCTL request to get the data rate.
 568  *
 569  * This function allocates the IOCTL request buffer, fills it
 570  * with requisite parameters and calls the IOCTL handler.
 571  */
 572 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate)
 573 {
 574         int ret;
 575
 576         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 577                                     HostCmd_ACT_GEN_GET, 0, NULL);
 578
 579         if (!ret) {
 580                 if (priv->is_data_rate_auto)
 581                         *rate = mwifiex_index_to_data_rate(priv, priv->tx_rate,
 582                                                            priv->tx_htinfo);
 583                 else
 584                         *rate = priv->data_rate;
 585         }
 586
 587         return ret;
 588 }
 589
 590 /*
 591  * IOCTL request handler to set tx power configuration.
 592  *
 593  * This function prepares the correct firmware command and
 594  * issues it.
 595  *
 596  * For non-auto power mode, all the following power groups are set -
 597  *      - Modulation class HR/DSSS
 598  *      - Modulation class OFDM
 599  *      - Modulation class HTBW20
 600  *      - Modulation class HTBW40
 601  */
 602 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 603                          struct mwifiex_power_cfg *power_cfg)
 604 {
 605         int ret;
 606         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 607         struct mwifiex_types_power_group *pg_tlv;
 608         struct mwifiex_power_group *pg;
 609         u8 *buf;
 610         u16 dbm = 0;
 611
 612         if (!power_cfg->is_power_auto) {
 613                 dbm = (u16) power_cfg->power_level;
 614                 if ((dbm < priv->min_tx_power_level) ||
 615                     (dbm > priv->max_tx_power_level)) {
 616                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 617                                 " is out of range (%d dBm-%d dBm)\n",
 618                                 dbm, priv->min_tx_power_level,
 619                                 priv->max_tx_power_level);
 620                         return -1;
 621                 }
 622         }
 623         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 624         if (!buf)
 625                 return -ENOMEM;
 626
 627         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 628         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 629         if (!power_cfg->is_power_auto) {
 630                 txp_cfg->mode = cpu_to_le32(1);
 631                 pg_tlv = (struct mwifiex_types_power_group *)
 632                          (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
 633                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 634                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 635                 pg = (struct mwifiex_power_group *)
 636                      (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
 637                       + sizeof(struct mwifiex_types_power_group));
 638                 /* Power group for modulation class HR/DSSS */
 639                 pg->first_rate_code = 0x00;
 640                 pg->last_rate_code = 0x03;
 641                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 642                 pg->power_step = 0;
 643                 pg->power_min = (s8) dbm;
 644                 pg->power_max = (s8) dbm;
 645                 pg++;
 646                 /* Power group for modulation class OFDM */
 647                 pg->first_rate_code = 0x00;
 648                 pg->last_rate_code = 0x07;
 649                 pg->modulation_class = MOD_CLASS_OFDM;
 650                 pg->power_step = 0;
 651                 pg->power_min = (s8) dbm;
 652                 pg->power_max = (s8) dbm;
 653                 pg++;
 654                 /* Power group for modulation class HTBW20 */
 655                 pg->first_rate_code = 0x00;
 656                 pg->last_rate_code = 0x20;
 657                 pg->modulation_class = MOD_CLASS_HT;
 658                 pg->power_step = 0;
 659                 pg->power_min = (s8) dbm;
 660                 pg->power_max = (s8) dbm;
 661                 pg->ht_bandwidth = HT_BW_20;
 662                 pg++;
 663                 /* Power group for modulation class HTBW40 */
 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_40;
 671         }
 672         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 673                                     HostCmd_ACT_GEN_SET, 0, buf);
 674
 675         kfree(buf);
 676         return ret;
 677 }
 678
 679 /*
 680  * IOCTL request handler to get power save mode.
 681  *
 682  * This function prepares the correct firmware command and
 683  * issues it.
 684  */
 685 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 686 {
 687         int ret;
 688         struct mwifiex_adapter *adapter = priv->adapter;
 689         u16 sub_cmd;
 690
 691         if (*ps_mode)
 692                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 693         else
 694                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 695         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 696         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 697                                     sub_cmd, BITMAP_STA_PS, NULL);
 698         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 699                 ret = mwifiex_send_cmd_async(priv,
 700                                              HostCmd_CMD_802_11_PS_MODE_ENH,
 701                                              GET_PS, 0, NULL);
 702
 703         return ret;
 704 }
 705
 706 /*
 707  * IOCTL request handler to set/reset WPA IE.
 708  *
 709  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 710  * is checked to determine WPA version. If buffer length is zero, the existing
 711  * WPA IE is reset.
 712  */
 713 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 714                                      u8 *ie_data_ptr, u16 ie_len)
 715 {
 716         if (ie_len) {
 717                 if (ie_len > sizeof(priv->wpa_ie)) {
 718                         dev_err(priv->adapter->dev,
 719                                 "failed to copy WPA IE, too big\n");
 720                         return -1;
 721                 }
 722                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 723                 priv->wpa_ie_len = (u8) ie_len;
 724                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 725                         priv->wpa_ie_len, priv->wpa_ie[0]);
 726
 727                 if (priv->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
 728                         priv->sec_info.wpa_enabled = true;
 729                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 730                         priv->sec_info.wpa2_enabled = true;
 731                 } else {
 732                         priv->sec_info.wpa_enabled = false;
 733                         priv->sec_info.wpa2_enabled = false;
 734                 }
 735         } else {
 736                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 737                 priv->wpa_ie_len = 0;
 738                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 739                         priv->wpa_ie_len, priv->wpa_ie[0]);
 740                 priv->sec_info.wpa_enabled = false;
 741                 priv->sec_info.wpa2_enabled = false;
 742         }
 743
 744         return 0;
 745 }
 746
 747 /*
 748  * IOCTL request handler to set/reset WAPI IE.
 749  *
 750  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 751  * is checked to internally enable WAPI. If buffer length is zero, the existing
 752  * WAPI IE is reset.
 753  */
 754 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 755                                u8 *ie_data_ptr, u16 ie_len)
 756 {
 757         if (ie_len) {
 758                 if (ie_len > sizeof(priv->wapi_ie)) {
 759                         dev_dbg(priv->adapter->dev,
 760                                 "info: failed to copy WAPI IE, too big\n");
 761                         return -1;
 762                 }
 763                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 764                 priv->wapi_ie_len = ie_len;
 765                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 766                         priv->wapi_ie_len, priv->wapi_ie[0]);
 767
 768                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 769                         priv->sec_info.wapi_enabled = true;
 770         } else {
 771                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 772                 priv->wapi_ie_len = ie_len;
 773                 dev_dbg(priv->adapter->dev,
 774                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 775                        priv->wapi_ie_len, priv->wapi_ie[0]);
 776                 priv->sec_info.wapi_enabled = false;
 777         }
 778         return 0;
 779 }
 780
 781 /*
 782  * IOCTL request handler to set/reset WPS IE.
 783  *
 784  * The supplied WPS IE is treated as a opaque buffer. Only the first field
 785  * is checked to internally enable WPS. If buffer length is zero, the existing
 786  * WPS IE is reset.
 787  */
 788 static int mwifiex_set_wps_ie(struct mwifiex_private *priv,
 789                                u8 *ie_data_ptr, u16 ie_len)
 790 {
 791         if (ie_len) {
 792                 priv->wps_ie = kzalloc(MWIFIEX_MAX_VSIE_LEN, GFP_KERNEL);
 793                 if (!priv->wps_ie)
 794                         return -ENOMEM;
 795                 if (ie_len > sizeof(priv->wps_ie)) {
 796                         dev_dbg(priv->adapter->dev,
 797                                 "info: failed to copy WPS IE, too big\n");
 798                         kfree(priv->wps_ie);
 799                         return -1;
 800                 }
 801                 memcpy(priv->wps_ie, ie_data_ptr, ie_len);
 802                 priv->wps_ie_len = ie_len;
 803                 dev_dbg(priv->adapter->dev, "cmd: Set wps_ie_len=%d IE=%#x\n",
 804                         priv->wps_ie_len, priv->wps_ie[0]);
 805         } else {
 806                 kfree(priv->wps_ie);
 807                 priv->wps_ie_len = ie_len;
 808                 dev_dbg(priv->adapter->dev,
 809                         "info: Reset wps_ie_len=%d\n", priv->wps_ie_len);
 810         }
 811         return 0;
 812 }
 813
 814 /*
 815  * IOCTL request handler to set WAPI key.
 816  *
 817  * This function prepares the correct firmware command and
 818  * issues it.
 819  */
 820 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
 821                                struct mwifiex_ds_encrypt_key *encrypt_key)
 822 {
 823
 824         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 825                                      HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
 826                                      encrypt_key);
 827 }
 828
 829 /*
 830  * IOCTL request handler to set WEP network key.
 831  *
 832  * This function prepares the correct firmware command and
 833  * issues it, after validation checks.
 834  */
 835 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 836                               struct mwifiex_ds_encrypt_key *encrypt_key)
 837 {
 838         int ret;
 839         struct mwifiex_wep_key *wep_key;
 840         int index;
 841
 842         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
 843                 priv->wep_key_curr_index = 0;
 844         wep_key = &priv->wep_key[priv->wep_key_curr_index];
 845         index = encrypt_key->key_index;
 846         if (encrypt_key->key_disable) {
 847                 priv->sec_info.wep_enabled = 0;
 848         } else if (!encrypt_key->key_len) {
 849                 /* Copy the required key as the current key */
 850                 wep_key = &priv->wep_key[index];
 851                 if (!wep_key->key_length) {
 852                         dev_err(priv->adapter->dev,
 853                                 "key not set, so cannot enable it\n");
 854                         return -1;
 855                 }
 856                 priv->wep_key_curr_index = (u16) index;
 857                 priv->sec_info.wep_enabled = 1;
 858         } else {
 859                 wep_key = &priv->wep_key[index];
 860                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 861                 /* Copy the key in the driver */
 862                 memcpy(wep_key->key_material,
 863                        encrypt_key->key_material,
 864                        encrypt_key->key_len);
 865                 wep_key->key_index = index;
 866                 wep_key->key_length = encrypt_key->key_len;
 867                 priv->sec_info.wep_enabled = 1;
 868         }
 869         if (wep_key->key_length) {
 870                 /* Send request to firmware */
 871                 ret = mwifiex_send_cmd_async(priv,
 872                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 873                                              HostCmd_ACT_GEN_SET, 0, NULL);
 874                 if (ret)
 875                         return ret;
 876         }
 877         if (priv->sec_info.wep_enabled)
 878                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
 879         else
 880                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
 881
 882         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
 883                                     HostCmd_ACT_GEN_SET, 0,
 884                                     &priv->curr_pkt_filter);
 885
 886         return ret;
 887 }
 888
 889 /*
 890  * IOCTL request handler to set WPA key.
 891  *
 892  * This function prepares the correct firmware command and
 893  * issues it, after validation checks.
 894  *
 895  * Current driver only supports key length of up to 32 bytes.
 896  *
 897  * This function can also be used to disable a currently set key.
 898  */
 899 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
 900                               struct mwifiex_ds_encrypt_key *encrypt_key)
 901 {
 902         int ret;
 903         u8 remove_key = false;
 904         struct host_cmd_ds_802_11_key_material *ibss_key;
 905
 906         /* Current driver only supports key length of up to 32 bytes */
 907         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
 908                 dev_err(priv->adapter->dev, "key length too long\n");
 909                 return -1;
 910         }
 911
 912         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 913                 /*
 914                  * IBSS/WPA-None uses only one key (Group) for both receiving
 915                  * and sending unicast and multicast packets.
 916                  */
 917                 /* Send the key as PTK to firmware */
 918                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 919                 ret = mwifiex_send_cmd_async(priv,
 920                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 921                                              HostCmd_ACT_GEN_SET,
 922                                              KEY_INFO_ENABLED, encrypt_key);
 923                 if (ret)
 924                         return ret;
 925
 926                 ibss_key = &priv->aes_key;
 927                 memset(ibss_key, 0,
 928                        sizeof(struct host_cmd_ds_802_11_key_material));
 929                 /* Copy the key in the driver */
 930                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
 931                        encrypt_key->key_len);
 932                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
 933                        sizeof(ibss_key->key_param_set.key_len));
 934                 ibss_key->key_param_set.key_type_id
 935                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
 936                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
 937
 938                 /* Send the key as GTK to firmware */
 939                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
 940         }
 941
 942         if (!encrypt_key->key_index)
 943                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 944
 945         if (remove_key)
 946                 ret = mwifiex_send_cmd_sync(priv,
 947                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 948                                             HostCmd_ACT_GEN_SET,
 949                                             !KEY_INFO_ENABLED, encrypt_key);
 950         else
 951                 ret = mwifiex_send_cmd_sync(priv,
 952                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 953                                             HostCmd_ACT_GEN_SET,
 954                                             KEY_INFO_ENABLED, encrypt_key);
 955
 956         return ret;
 957 }
 958
 959 /*
 960  * IOCTL request handler to set/get network keys.
 961  *
 962  * This is a generic key handling function which supports WEP, WPA
 963  * and WAPI.
 964  */
 965 static int
 966 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
 967                               struct mwifiex_ds_encrypt_key *encrypt_key)
 968 {
 969         int status;
 970
 971         if (encrypt_key->is_wapi_key)
 972                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
 973         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
 974                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
 975         else
 976                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
 977         return status;
 978 }
 979
 980 /*
 981  * This function returns the driver version.
 982  */
 983 int
 984 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
 985                                int max_len)
 986 {
 987         union {
 988                 u32 l;
 989                 u8 c[4];
 990         } ver;
 991         char fw_ver[32];
 992
 993         ver.l = adapter->fw_release_number;
 994         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
 995
 996         snprintf(version, max_len, driver_version, fw_ver);
 997
 998         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
 999
1000         return 0;
1001 }
1002
1003 /*
1004  * Sends IOCTL request to set encoding parameters.
1005  *
1006  * This function allocates the IOCTL request buffer, fills it
1007  * with requisite parameters and calls the IOCTL handler.
1008  */
1009 int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
1010                        const u8 *key, int key_len, u8 key_index,
1011                        const u8 *mac_addr, int disable)
1012 {
1013         struct mwifiex_ds_encrypt_key encrypt_key;
1014
1015         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1016         encrypt_key.key_len = key_len;
1017
1018         if (kp && kp->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1019                 encrypt_key.is_igtk_key = true;
1020
1021         if (!disable) {
1022                 encrypt_key.key_index = key_index;
1023                 if (key_len)
1024                         memcpy(encrypt_key.key_material, key, key_len);
1025                 if (mac_addr)
1026                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1027                 if (kp && kp->seq && kp->seq_len)
1028                         memcpy(encrypt_key.pn, kp->seq, kp->seq_len);
1029         } else {
1030                 encrypt_key.key_disable = true;
1031                 if (mac_addr)
1032                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1033         }
1034
1035         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1036 }
1037
1038 /*
1039  * Sends IOCTL request to get extended version.
1040  *
1041  * This function allocates the IOCTL request buffer, fills it
1042  * with requisite parameters and calls the IOCTL handler.
1043  */
1044 int
1045 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1046 {
1047         struct mwifiex_ver_ext ver_ext;
1048
1049         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1050         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1051                                   HostCmd_ACT_GEN_GET, 0, &ver_ext))
1052                 return -1;
1053
1054         return 0;
1055 }
1056
1057 int
1058 mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
1059                            struct ieee80211_channel *chan,
1060                            unsigned int duration)
1061 {
1062         struct host_cmd_ds_remain_on_chan roc_cfg;
1063         u8 sc;
1064
1065         memset(&roc_cfg, 0, sizeof(roc_cfg));
1066         roc_cfg.action = cpu_to_le16(action);
1067         if (action == HostCmd_ACT_GEN_SET) {
1068                 roc_cfg.band_cfg = chan->band;
1069                 sc = mwifiex_chan_type_to_sec_chan_offset(NL80211_CHAN_NO_HT);
1070                 roc_cfg.band_cfg |= (sc << 2);
1071
1072                 roc_cfg.channel =
1073                         ieee80211_frequency_to_channel(chan->center_freq);
1074                 roc_cfg.duration = cpu_to_le32(duration);
1075         }
1076         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_REMAIN_ON_CHAN,
1077                                   action, 0, &roc_cfg)) {
1078                 dev_err(priv->adapter->dev, "failed to remain on channel\n");
1079                 return -1;
1080         }
1081
1082         return roc_cfg.status;
1083 }
1084
1085 int
1086 mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role)
1087 {
1088         if (GET_BSS_ROLE(priv) == bss_role) {
1089                 dev_dbg(priv->adapter->dev,
1090                         "info: already in the desired role.\n");
1091                 return 0;
1092         }
1093
1094         mwifiex_free_priv(priv);
1095         mwifiex_init_priv(priv);
1096
1097         priv->bss_role = bss_role;
1098         switch (bss_role) {
1099         case MWIFIEX_BSS_ROLE_UAP:
1100                 priv->bss_mode = NL80211_IFTYPE_AP;
1101                 break;
1102         case MWIFIEX_BSS_ROLE_STA:
1103         case MWIFIEX_BSS_ROLE_ANY:
1104         default:
1105                 priv->bss_mode = NL80211_IFTYPE_STATION;
1106                 break;
1107         }
1108
1109         mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
1110                               HostCmd_ACT_GEN_SET, 0, NULL);
1111
1112         return mwifiex_sta_init_cmd(priv, false);
1113 }
1114
1115 /*
1116  * Sends IOCTL request to get statistics information.
1117  *
1118  * This function allocates the IOCTL request buffer, fills it
1119  * with requisite parameters and calls the IOCTL handler.
1120  */
1121 int
1122 mwifiex_get_stats_info(struct mwifiex_private *priv,
1123                        struct mwifiex_ds_get_stats *log)
1124 {
1125         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1126                                      HostCmd_ACT_GEN_GET, 0, log);
1127 }
1128
1129 /*
1130  * IOCTL request handler to read/write register.
1131  *
1132  * This function prepares the correct firmware command and
1133  * issues it.
1134  *
1135  * Access to the following registers are supported -
1136  *      - MAC
1137  *      - BBP
1138  *      - RF
1139  *      - PMIC
1140  *      - CAU
1141  */
1142 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1143                                         struct mwifiex_ds_reg_rw *reg_rw,
1144                                         u16 action)
1145 {
1146         u16 cmd_no;
1147
1148         switch (le32_to_cpu(reg_rw->type)) {
1149         case MWIFIEX_REG_MAC:
1150                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1151                 break;
1152         case MWIFIEX_REG_BBP:
1153                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1154                 break;
1155         case MWIFIEX_REG_RF:
1156                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1157                 break;
1158         case MWIFIEX_REG_PMIC:
1159                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1160                 break;
1161         case MWIFIEX_REG_CAU:
1162                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1163                 break;
1164         default:
1165                 return -1;
1166         }
1167
1168         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1169
1170 }
1171
1172 /*
1173  * Sends IOCTL request to write to a register.
1174  *
1175  * This function allocates the IOCTL request buffer, fills it
1176  * with requisite parameters and calls the IOCTL handler.
1177  */
1178 int
1179 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1180                   u32 reg_offset, u32 reg_value)
1181 {
1182         struct mwifiex_ds_reg_rw reg_rw;
1183
1184         reg_rw.type = cpu_to_le32(reg_type);
1185         reg_rw.offset = cpu_to_le32(reg_offset);
1186         reg_rw.value = cpu_to_le32(reg_value);
1187
1188         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1189 }
1190
1191 /*
1192  * Sends IOCTL request to read from a register.
1193  *
1194  * This function allocates the IOCTL request buffer, fills it
1195  * with requisite parameters and calls the IOCTL handler.
1196  */
1197 int
1198 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1199                  u32 reg_offset, u32 *value)
1200 {
1201         int ret;
1202         struct mwifiex_ds_reg_rw reg_rw;
1203
1204         reg_rw.type = cpu_to_le32(reg_type);
1205         reg_rw.offset = cpu_to_le32(reg_offset);
1206         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1207
1208         if (ret)
1209                 goto done;
1210
1211         *value = le32_to_cpu(reg_rw.value);
1212
1213 done:
1214         return ret;
1215 }
1216
1217 /*
1218  * Sends IOCTL request to read from EEPROM.
1219  *
1220  * This function allocates the IOCTL request buffer, fills it
1221  * with requisite parameters and calls the IOCTL handler.
1222  */
1223 int
1224 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1225                     u8 *value)
1226 {
1227         int ret;
1228         struct mwifiex_ds_read_eeprom rd_eeprom;
1229
1230         rd_eeprom.offset = cpu_to_le16((u16) offset);
1231         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1232
1233         /* Send request to firmware */
1234         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1235                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1236
1237         if (!ret)
1238                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1239         return ret;
1240 }
1241
1242 /*
1243  * This function sets a generic IE. In addition to generic IE, it can
1244  * also handle WPA, WPA2 and WAPI IEs.
1245  */
1246 static int
1247 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1248                           u16 ie_len)
1249 {
1250         int ret = 0;
1251         struct ieee_types_vendor_header *pvendor_ie;
1252         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1253         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1254
1255         /* If the passed length is zero, reset the buffer */
1256         if (!ie_len) {
1257                 priv->gen_ie_buf_len = 0;
1258                 priv->wps.session_enable = false;
1259
1260                 return 0;
1261         } else if (!ie_data_ptr) {
1262                 return -1;
1263         }
1264         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1265         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1266         if (((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1267              (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1268             (pvendor_ie->element_id == WLAN_EID_RSN)) {
1269
1270                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1271                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1272                 priv->wps.session_enable = false;
1273
1274                 return ret;
1275         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1276                 /* IE is a WAPI IE so call set_wapi function */
1277                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1278
1279                 return ret;
1280         }
1281         /*
1282          * Verify that the passed length is not larger than the
1283          * available space remaining in the buffer
1284          */
1285         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1286
1287                 /* Test to see if it is a WPS IE, if so, enable
1288                  * wps session flag
1289                  */
1290                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1291                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1292                     (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1293                         priv->wps.session_enable = true;
1294                         dev_dbg(priv->adapter->dev,
1295                                 "info: WPS Session Enabled.\n");
1296                         ret = mwifiex_set_wps_ie(priv, ie_data_ptr, ie_len);
1297                 }
1298
1299                 /* Append the passed data to the end of the
1300                    genIeBuffer */
1301                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1302                        ie_len);
1303                 /* Increment the stored buffer length by the
1304                    size passed */
1305                 priv->gen_ie_buf_len += ie_len;
1306         } else {
1307                 /* Passed data does not fit in the remaining
1308                    buffer space */
1309                 ret = -1;
1310         }
1311
1312         /* Return 0, or -1 for error case */
1313         return ret;
1314 }
1315
1316 /*
1317  * IOCTL request handler to set/get generic IE.
1318  *
1319  * In addition to various generic IEs, this function can also be
1320  * used to set the ARP filter.
1321  */
1322 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1323                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1324                                      u16 action)
1325 {
1326         struct mwifiex_adapter *adapter = priv->adapter;
1327
1328         switch (gen_ie->type) {
1329         case MWIFIEX_IE_TYPE_GEN_IE:
1330                 if (action == HostCmd_ACT_GEN_GET) {
1331                         gen_ie->len = priv->wpa_ie_len;
1332                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1333                 } else {
1334                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1335                                                   (u16) gen_ie->len);
1336                 }
1337                 break;
1338         case MWIFIEX_IE_TYPE_ARP_FILTER:
1339                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1340                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1341                         adapter->arp_filter_size = 0;
1342                         dev_err(adapter->dev, "invalid ARP filter size\n");
1343                         return -1;
1344                 } else {
1345                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1346                                gen_ie->len);
1347                         adapter->arp_filter_size = gen_ie->len;
1348                 }
1349                 break;
1350         default:
1351                 dev_err(adapter->dev, "invalid IE type\n");
1352                 return -1;
1353         }
1354         return 0;
1355 }
1356
1357 /*
1358  * Sends IOCTL request to set a generic IE.
1359  *
1360  * This function allocates the IOCTL request buffer, fills it
1361  * with requisite parameters and calls the IOCTL handler.
1362  */
1363 int
1364 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1365 {
1366         struct mwifiex_ds_misc_gen_ie gen_ie;
1367
1368         if (ie_len > IEEE_MAX_IE_SIZE)
1369                 return -EFAULT;
1370
1371         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1372         gen_ie.len = ie_len;
1373         memcpy(gen_ie.ie_data, ie, ie_len);
1374         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1375                 return -EFAULT;
1376
1377         return 0;
1378 }