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