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                         dev_dbg(priv->adapter->dev,
 108                                 "info: Set multicast list=%d\n",
 109                                 mcast_list->num_multicast_addr);
 110                         /* Send multicast addresses to firmware */
 111                         ret = mwifiex_send_cmd_async(priv,
 112                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 113                                 HostCmd_ACT_GEN_SET, 0,
 114                                 mcast_list);
 115                 }
 116         }
 117         dev_dbg(priv->adapter->dev,
 118                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 119                old_pkt_filter, priv->curr_pkt_filter);
 120         if (old_pkt_filter != priv->curr_pkt_filter) {
 121                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 122                                              HostCmd_ACT_GEN_SET,
 123                                              0, &priv->curr_pkt_filter);
 124         }
 125
 126         return ret;
 127 }
 128
 129 /*
 130  * This function fills bss descriptor structure using provided
 131  * information.
 132  * beacon_ie buffer is allocated in this function. It is caller's
 133  * responsibility to free the memory.
 134  */
 135 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 136                               struct cfg80211_bss *bss,
 137                               struct mwifiex_bssdescriptor *bss_desc)
 138 {
 139         u8 *beacon_ie;
 140         size_t beacon_ie_len;
 141         struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
 142         const struct cfg80211_bss_ies *ies;
 143
 144         rcu_read_lock();
 145         ies = rcu_dereference(bss->ies);
 146         beacon_ie = kmemdup(ies->data, ies->len, GFP_ATOMIC);
 147         beacon_ie_len = ies->len;
 148         bss_desc->timestamp = ies->tsf;
 149         rcu_read_unlock();
 150
 151         if (!beacon_ie) {
 152                 dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 153                 return -ENOMEM;
 154         }
 155
 156         memcpy(bss_desc->mac_address, bss->bssid, ETH_ALEN);
 157         bss_desc->rssi = bss->signal;
 158         /* The caller of this function will free beacon_ie */
 159         bss_desc->beacon_buf = beacon_ie;
 160         bss_desc->beacon_buf_size = beacon_ie_len;
 161         bss_desc->beacon_period = bss->beacon_interval;
 162         bss_desc->cap_info_bitmap = bss->capability;
 163         bss_desc->bss_band = bss_priv->band;
 164         bss_desc->fw_tsf = bss_priv->fw_tsf;
 165         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 166                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 167                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 168         } else {
 169                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 170         }
 171         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 172                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 173         else
 174                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 175
 176         /* Disable 11ac by default. Enable it only where there
 177          * exist VHT_CAP IE in AP beacon
 178          */
 179         bss_desc->disable_11ac = true;
 180
 181         return mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
 182 }
 183
 184 static int mwifiex_process_country_ie(struct mwifiex_private *priv,
 185                                       struct cfg80211_bss *bss)
 186 {
 187         const u8 *country_ie;
 188         u8 country_ie_len;
 189         struct mwifiex_802_11d_domain_reg *domain_info =
 190                                         &priv->adapter->domain_reg;
 191
 192         rcu_read_lock();
 193         country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
 194         if (!country_ie) {
 195                 rcu_read_unlock();
 196                 return 0;
 197         }
 198
 199         country_ie_len = country_ie[1];
 200         if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) {
 201                 rcu_read_unlock();
 202                 return 0;
 203         }
 204
 205         domain_info->country_code[0] = country_ie[2];
 206         domain_info->country_code[1] = country_ie[3];
 207         domain_info->country_code[2] = ' ';
 208
 209         country_ie_len -= IEEE80211_COUNTRY_STRING_LEN;
 210
 211         domain_info->no_of_triplet =
 212                 country_ie_len / sizeof(struct ieee80211_country_ie_triplet);
 213
 214         memcpy((u8 *)domain_info->triplet,
 215                &country_ie[2] + IEEE80211_COUNTRY_STRING_LEN, country_ie_len);
 216
 217         rcu_read_unlock();
 218
 219         if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
 220                                    HostCmd_ACT_GEN_SET, 0, NULL)) {
 221                 wiphy_err(priv->adapter->wiphy,
 222                           "11D: setting domain info in FW\n");
 223                 return -1;
 224         }
 225
 226         return 0;
 227 }
 228
 229 /*
 230  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 231  * In both Ad-Hoc and infra mode, an deauthentication is performed
 232  * first.
 233  */
 234 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 235                       struct cfg80211_ssid *req_ssid)
 236 {
 237         int ret;
 238         struct mwifiex_adapter *adapter = priv->adapter;
 239         struct mwifiex_bssdescriptor *bss_desc = NULL;
 240
 241         priv->scan_block = false;
 242
 243         if (bss) {
 244                 mwifiex_process_country_ie(priv, bss);
 245
 246                 /* Allocate and fill new bss descriptor */
 247                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 248                                    GFP_KERNEL);
 249                 if (!bss_desc)
 250                         return -ENOMEM;
 251
 252                 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
 253                 if (ret)
 254                         goto done;
 255         }
 256
 257         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 258                 /* Infra mode */
 259                 ret = mwifiex_deauthenticate(priv, NULL);
 260                 if (ret)
 261                         goto done;
 262
 263                 if (bss_desc) {
 264                         u8 config_bands = 0;
 265
 266                         if (mwifiex_band_to_radio_type((u8) bss_desc->bss_band)
 267                             == HostCmd_SCAN_RADIO_TYPE_BG)
 268                                 config_bands = BAND_B | BAND_G | BAND_GN |
 269                                                BAND_GAC;
 270                         else
 271                                 config_bands = BAND_A | BAND_AN | BAND_AAC;
 272
 273                         if (!((config_bands | adapter->fw_bands) &
 274                               ~adapter->fw_bands))
 275                                 adapter->config_bands = config_bands;
 276                 }
 277
 278                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 279                 if (ret)
 280                         goto done;
 281
 282                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 283                                       "associating...\n");
 284
 285                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 286                 if (netif_carrier_ok(priv->netdev))
 287                         netif_carrier_off(priv->netdev);
 288
 289                 /* Clear any past association response stored for
 290                  * application retrieval */
 291                 priv->assoc_rsp_size = 0;
 292                 ret = mwifiex_associate(priv, bss_desc);
 293
 294                 /* If auth type is auto and association fails using open mode,
 295                  * try to connect using shared mode */
 296                 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
 297                     priv->sec_info.is_authtype_auto &&
 298                     priv->sec_info.wep_enabled) {
 299                         priv->sec_info.authentication_mode =
 300                                                 NL80211_AUTHTYPE_SHARED_KEY;
 301                         ret = mwifiex_associate(priv, bss_desc);
 302                 }
 303
 304                 if (bss)
 305                         cfg80211_put_bss(priv->adapter->wiphy, bss);
 306         } else {
 307                 /* Adhoc mode */
 308                 /* If the requested SSID matches current SSID, return */
 309                 if (bss_desc && bss_desc->ssid.ssid_len &&
 310                     (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
 311                                        ssid, &bss_desc->ssid))) {
 312                         ret = 0;
 313                         goto done;
 314                 }
 315
 316                 /* Exit Adhoc mode first */
 317                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 318                 ret = mwifiex_deauthenticate(priv, NULL);
 319                 if (ret)
 320                         goto done;
 321
 322                 priv->adhoc_is_link_sensed = false;
 323
 324                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 325
 326                 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 327                 if (netif_carrier_ok(priv->netdev))
 328                         netif_carrier_off(priv->netdev);
 329
 330                 if (!ret) {
 331                         dev_dbg(adapter->dev, "info: network found in scan"
 332                                                         " list. Joining...\n");
 333                         ret = mwifiex_adhoc_join(priv, bss_desc);
 334                         if (bss)
 335                                 cfg80211_put_bss(priv->adapter->wiphy, bss);
 336                 } else {
 337                         dev_dbg(adapter->dev, "info: Network not found in "
 338                                 "the list, creating adhoc with ssid = %s\n",
 339                                 req_ssid->ssid);
 340                         ret = mwifiex_adhoc_start(priv, req_ssid);
 341                 }
 342         }
 343
 344 done:
 345         /* beacon_ie buffer was allocated in function
 346          * mwifiex_fill_new_bss_desc(). Free it now.
 347          */
 348         if (bss_desc)
 349                 kfree(bss_desc->beacon_buf);
 350         kfree(bss_desc);
 351         return ret;
 352 }
 353
 354 /*
 355  * IOCTL request handler to set host sleep configuration.
 356  *
 357  * This function prepares the correct firmware command and
 358  * issues it.
 359  */
 360 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 361                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 362
 363 {
 364         struct mwifiex_adapter *adapter = priv->adapter;
 365         int status = 0;
 366         u32 prev_cond = 0;
 367
 368         if (!hs_cfg)
 369                 return -ENOMEM;
 370
 371         switch (action) {
 372         case HostCmd_ACT_GEN_SET:
 373                 if (adapter->pps_uapsd_mode) {
 374                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 375                                 " is blocked in UAPSD/PPS mode\n");
 376                         status = -1;
 377                         break;
 378                 }
 379                 if (hs_cfg->is_invoke_hostcmd) {
 380                         if (hs_cfg->conditions == HS_CFG_CANCEL) {
 381                                 if (!adapter->is_hs_configured)
 382                                         /* Already cancelled */
 383                                         break;
 384                                 /* Save previous condition */
 385                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 386                                                         .conditions);
 387                                 adapter->hs_cfg.conditions =
 388                                                 cpu_to_le32(hs_cfg->conditions);
 389                         } else if (hs_cfg->conditions) {
 390                                 adapter->hs_cfg.conditions =
 391                                                 cpu_to_le32(hs_cfg->conditions);
 392                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 393                                 if (hs_cfg->gap)
 394                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 395                         } else if (adapter->hs_cfg.conditions ==
 396                                    cpu_to_le32(HS_CFG_CANCEL)) {
 397                                 /* Return failure if no parameters for HS
 398                                    enable */
 399                                 status = -1;
 400                                 break;
 401                         }
 402                         if (cmd_type == MWIFIEX_SYNC_CMD)
 403                                 status = mwifiex_send_cmd_sync(priv,
 404                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 405                                                 HostCmd_ACT_GEN_SET, 0,
 406                                                 &adapter->hs_cfg);
 407                         else
 408                                 status = mwifiex_send_cmd_async(priv,
 409                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 410                                                 HostCmd_ACT_GEN_SET, 0,
 411                                                 &adapter->hs_cfg);
 412                         if (hs_cfg->conditions == HS_CFG_CANCEL)
 413                                 /* Restore previous condition */
 414                                 adapter->hs_cfg.conditions =
 415                                                 cpu_to_le32(prev_cond);
 416                 } else {
 417                         adapter->hs_cfg.conditions =
 418                                                 cpu_to_le32(hs_cfg->conditions);
 419                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 420                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 421                 }
 422                 break;
 423         case HostCmd_ACT_GEN_GET:
 424                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 425                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 426                 hs_cfg->gap = adapter->hs_cfg.gap;
 427                 break;
 428         default:
 429                 status = -1;
 430                 break;
 431         }
 432
 433         return status;
 434 }
 435
 436 /*
 437  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 438  *
 439  * This function allocates the IOCTL request buffer, fills it
 440  * with requisite parameters and calls the IOCTL handler.
 441  */
 442 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 443 {
 444         struct mwifiex_ds_hs_cfg hscfg;
 445
 446         hscfg.conditions = HS_CFG_CANCEL;
 447         hscfg.is_invoke_hostcmd = true;
 448
 449         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 450                                     cmd_type, &hscfg);
 451 }
 452 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 453
 454 /*
 455  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 456  *
 457  * This function allocates the IOCTL request buffer, fills it
 458  * with requisite parameters and calls the IOCTL handler.
 459  */
 460 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 461 {
 462         struct mwifiex_ds_hs_cfg hscfg;
 463         struct mwifiex_private *priv;
 464         int i;
 465
 466         if (disconnect_on_suspend) {
 467                 for (i = 0; i < adapter->priv_num; i++) {
 468                         priv = adapter->priv[i];
 469                         if (priv)
 470                                 mwifiex_deauthenticate(priv, NULL);
 471                 }
 472         }
 473
 474         if (adapter->hs_activated) {
 475                 dev_dbg(adapter->dev, "cmd: HS Already activated\n");
 476                 return true;
 477         }
 478
 479         adapter->hs_activate_wait_q_woken = false;
 480
 481         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 482         hscfg.is_invoke_hostcmd = true;
 483
 484         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 485                                                    MWIFIEX_BSS_ROLE_STA),
 486                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 487                                   &hscfg)) {
 488                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 489                 return false;
 490         }
 491
 492         if (wait_event_interruptible(adapter->hs_activate_wait_q,
 493                                      adapter->hs_activate_wait_q_woken)) {
 494                 dev_err(adapter->dev, "hs_activate_wait_q terminated\n");
 495                 return false;
 496         }
 497
 498         return true;
 499 }
 500 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 501
 502 /*
 503  * IOCTL request handler to get BSS information.
 504  *
 505  * This function collates the information from different driver structures
 506  * to send to the user.
 507  */
 508 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 509                          struct mwifiex_bss_info *info)
 510 {
 511         struct mwifiex_adapter *adapter = priv->adapter;
 512         struct mwifiex_bssdescriptor *bss_desc;
 513
 514         if (!info)
 515                 return -1;
 516
 517         bss_desc = &priv->curr_bss_params.bss_descriptor;
 518
 519         info->bss_mode = priv->bss_mode;
 520
 521         memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
 522
 523         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 524
 525         info->bss_chan = bss_desc->channel;
 526
 527         memcpy(info->country_code, adapter->country_code,
 528                IEEE80211_COUNTRY_STRING_LEN);
 529
 530         info->media_connected = priv->media_connected;
 531
 532         info->max_power_level = priv->max_tx_power_level;
 533         info->min_power_level = priv->min_tx_power_level;
 534
 535         info->adhoc_state = priv->adhoc_state;
 536
 537         info->bcn_nf_last = priv->bcn_nf_last;
 538
 539         if (priv->sec_info.wep_enabled)
 540                 info->wep_status = true;
 541         else
 542                 info->wep_status = false;
 543
 544         info->is_hs_configured = adapter->is_hs_configured;
 545         info->is_deep_sleep = adapter->is_deep_sleep;
 546
 547         return 0;
 548 }
 549
 550 /*
 551  * The function disables auto deep sleep mode.
 552  */
 553 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 554 {
 555         struct mwifiex_ds_auto_ds auto_ds;
 556
 557         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 558
 559         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 560                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 561 }
 562 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 563
 564 /*
 565  * Sends IOCTL request to get the data rate.
 566  *
 567  * This function allocates the IOCTL request buffer, fills it
 568  * with requisite parameters and calls the IOCTL handler.
 569  */
 570 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate)
 571 {
 572         int ret;
 573
 574         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 575                                     HostCmd_ACT_GEN_GET, 0, NULL);
 576
 577         if (!ret) {
 578                 if (priv->is_data_rate_auto)
 579                         *rate = mwifiex_index_to_data_rate(priv, priv->tx_rate,
 580                                                            priv->tx_htinfo);
 581                 else
 582                         *rate = priv->data_rate;
 583         }
 584
 585         return ret;
 586 }
 587
 588 /*
 589  * IOCTL request handler to set tx power configuration.
 590  *
 591  * This function prepares the correct firmware command and
 592  * issues it.
 593  *
 594  * For non-auto power mode, all the following power groups are set -
 595  *      - Modulation class HR/DSSS
 596  *      - Modulation class OFDM
 597  *      - Modulation class HTBW20
 598  *      - Modulation class HTBW40
 599  */
 600 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 601                          struct mwifiex_power_cfg *power_cfg)
 602 {
 603         int ret;
 604         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 605         struct mwifiex_types_power_group *pg_tlv;
 606         struct mwifiex_power_group *pg;
 607         u8 *buf;
 608         u16 dbm = 0;
 609
 610         if (!power_cfg->is_power_auto) {
 611                 dbm = (u16) power_cfg->power_level;
 612                 if ((dbm < priv->min_tx_power_level) ||
 613                     (dbm > priv->max_tx_power_level)) {
 614                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 615                                 " is out of range (%d dBm-%d dBm)\n",
 616                                 dbm, priv->min_tx_power_level,
 617                                 priv->max_tx_power_level);
 618                         return -1;
 619                 }
 620         }
 621         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 622         if (!buf)
 623                 return -ENOMEM;
 624
 625         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 626         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 627         if (!power_cfg->is_power_auto) {
 628                 txp_cfg->mode = cpu_to_le32(1);
 629                 pg_tlv = (struct mwifiex_types_power_group *)
 630                          (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
 631                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 632                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 633                 pg = (struct mwifiex_power_group *)
 634                      (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
 635                       + sizeof(struct mwifiex_types_power_group));
 636                 /* Power group for modulation class HR/DSSS */
 637                 pg->first_rate_code = 0x00;
 638                 pg->last_rate_code = 0x03;
 639                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 640                 pg->power_step = 0;
 641                 pg->power_min = (s8) dbm;
 642                 pg->power_max = (s8) dbm;
 643                 pg++;
 644                 /* Power group for modulation class OFDM */
 645                 pg->first_rate_code = 0x00;
 646                 pg->last_rate_code = 0x07;
 647                 pg->modulation_class = MOD_CLASS_OFDM;
 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 HTBW20 */
 653                 pg->first_rate_code = 0x00;
 654                 pg->last_rate_code = 0x20;
 655                 pg->modulation_class = MOD_CLASS_HT;
 656                 pg->power_step = 0;
 657                 pg->power_min = (s8) dbm;
 658                 pg->power_max = (s8) dbm;
 659                 pg->ht_bandwidth = HT_BW_20;
 660                 pg++;
 661                 /* Power group for modulation class HTBW40 */
 662                 pg->first_rate_code = 0x00;
 663                 pg->last_rate_code = 0x20;
 664                 pg->modulation_class = MOD_CLASS_HT;
 665                 pg->power_step = 0;
 666                 pg->power_min = (s8) dbm;
 667                 pg->power_max = (s8) dbm;
 668                 pg->ht_bandwidth = HT_BW_40;
 669         }
 670         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 671                                     HostCmd_ACT_GEN_SET, 0, buf);
 672
 673         kfree(buf);
 674         return ret;
 675 }
 676
 677 /*
 678  * IOCTL request handler to get power save mode.
 679  *
 680  * This function prepares the correct firmware command and
 681  * issues it.
 682  */
 683 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 684 {
 685         int ret;
 686         struct mwifiex_adapter *adapter = priv->adapter;
 687         u16 sub_cmd;
 688
 689         if (*ps_mode)
 690                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 691         else
 692                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 693         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 694         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 695                                     sub_cmd, BITMAP_STA_PS, NULL);
 696         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 697                 ret = mwifiex_send_cmd_async(priv,
 698                                              HostCmd_CMD_802_11_PS_MODE_ENH,
 699                                              GET_PS, 0, NULL);
 700
 701         return ret;
 702 }
 703
 704 /*
 705  * IOCTL request handler to set/reset WPA IE.
 706  *
 707  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 708  * is checked to determine WPA version. If buffer length is zero, the existing
 709  * WPA IE is reset.
 710  */
 711 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 712                                      u8 *ie_data_ptr, u16 ie_len)
 713 {
 714         if (ie_len) {
 715                 if (ie_len > sizeof(priv->wpa_ie)) {
 716                         dev_err(priv->adapter->dev,
 717                                 "failed to copy WPA IE, too big\n");
 718                         return -1;
 719                 }
 720                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 721                 priv->wpa_ie_len = (u8) ie_len;
 722                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 723                         priv->wpa_ie_len, priv->wpa_ie[0]);
 724
 725                 if (priv->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
 726                         priv->sec_info.wpa_enabled = true;
 727                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 728                         priv->sec_info.wpa2_enabled = true;
 729                 } else {
 730                         priv->sec_info.wpa_enabled = false;
 731                         priv->sec_info.wpa2_enabled = false;
 732                 }
 733         } else {
 734                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 735                 priv->wpa_ie_len = 0;
 736                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 737                         priv->wpa_ie_len, priv->wpa_ie[0]);
 738                 priv->sec_info.wpa_enabled = false;
 739                 priv->sec_info.wpa2_enabled = false;
 740         }
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * IOCTL request handler to set/reset WAPI IE.
 747  *
 748  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 749  * is checked to internally enable WAPI. If buffer length is zero, the existing
 750  * WAPI IE is reset.
 751  */
 752 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 753                                u8 *ie_data_ptr, u16 ie_len)
 754 {
 755         if (ie_len) {
 756                 if (ie_len > sizeof(priv->wapi_ie)) {
 757                         dev_dbg(priv->adapter->dev,
 758                                 "info: failed to copy WAPI IE, too big\n");
 759                         return -1;
 760                 }
 761                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 762                 priv->wapi_ie_len = ie_len;
 763                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 764                         priv->wapi_ie_len, priv->wapi_ie[0]);
 765
 766                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 767                         priv->sec_info.wapi_enabled = true;
 768         } else {
 769                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 770                 priv->wapi_ie_len = ie_len;
 771                 dev_dbg(priv->adapter->dev,
 772                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 773                        priv->wapi_ie_len, priv->wapi_ie[0]);
 774                 priv->sec_info.wapi_enabled = false;
 775         }
 776         return 0;
 777 }
 778
 779 /*
 780  * IOCTL request handler to set/reset WPS IE.
 781  *
 782  * The supplied WPS IE is treated as a opaque buffer. Only the first field
 783  * is checked to internally enable WPS. If buffer length is zero, the existing
 784  * WPS IE is reset.
 785  */
 786 static int mwifiex_set_wps_ie(struct mwifiex_private *priv,
 787                                u8 *ie_data_ptr, u16 ie_len)
 788 {
 789         if (ie_len) {
 790                 priv->wps_ie = kzalloc(MWIFIEX_MAX_VSIE_LEN, GFP_KERNEL);
 791                 if (!priv->wps_ie)
 792                         return -ENOMEM;
 793                 if (ie_len > sizeof(priv->wps_ie)) {
 794                         dev_dbg(priv->adapter->dev,
 795                                 "info: failed to copy WPS IE, too big\n");
 796                         kfree(priv->wps_ie);
 797                         return -1;
 798                 }
 799                 memcpy(priv->wps_ie, ie_data_ptr, ie_len);
 800                 priv->wps_ie_len = ie_len;
 801                 dev_dbg(priv->adapter->dev, "cmd: Set wps_ie_len=%d IE=%#x\n",
 802                         priv->wps_ie_len, priv->wps_ie[0]);
 803         } else {
 804                 kfree(priv->wps_ie);
 805                 priv->wps_ie_len = ie_len;
 806                 dev_dbg(priv->adapter->dev,
 807                         "info: Reset wps_ie_len=%d\n", priv->wps_ie_len);
 808         }
 809         return 0;
 810 }
 811
 812 /*
 813  * IOCTL request handler to set WAPI key.
 814  *
 815  * This function prepares the correct firmware command and
 816  * issues it.
 817  */
 818 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
 819                                struct mwifiex_ds_encrypt_key *encrypt_key)
 820 {
 821
 822         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
 823                                      HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
 824                                      encrypt_key);
 825 }
 826
 827 /*
 828  * IOCTL request handler to set WEP network key.
 829  *
 830  * This function prepares the correct firmware command and
 831  * issues it, after validation checks.
 832  */
 833 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
 834                               struct mwifiex_ds_encrypt_key *encrypt_key)
 835 {
 836         int ret;
 837         struct mwifiex_wep_key *wep_key;
 838         int index;
 839
 840         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
 841                 priv->wep_key_curr_index = 0;
 842         wep_key = &priv->wep_key[priv->wep_key_curr_index];
 843         index = encrypt_key->key_index;
 844         if (encrypt_key->key_disable) {
 845                 priv->sec_info.wep_enabled = 0;
 846         } else if (!encrypt_key->key_len) {
 847                 /* Copy the required key as the current key */
 848                 wep_key = &priv->wep_key[index];
 849                 if (!wep_key->key_length) {
 850                         dev_err(priv->adapter->dev,
 851                                 "key not set, so cannot enable it\n");
 852                         return -1;
 853                 }
 854                 priv->wep_key_curr_index = (u16) index;
 855                 priv->sec_info.wep_enabled = 1;
 856         } else {
 857                 wep_key = &priv->wep_key[index];
 858                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
 859                 /* Copy the key in the driver */
 860                 memcpy(wep_key->key_material,
 861                        encrypt_key->key_material,
 862                        encrypt_key->key_len);
 863                 wep_key->key_index = index;
 864                 wep_key->key_length = encrypt_key->key_len;
 865                 priv->sec_info.wep_enabled = 1;
 866         }
 867         if (wep_key->key_length) {
 868                 /* Send request to firmware */
 869                 ret = mwifiex_send_cmd_async(priv,
 870                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 871                                              HostCmd_ACT_GEN_SET, 0, NULL);
 872                 if (ret)
 873                         return ret;
 874         }
 875         if (priv->sec_info.wep_enabled)
 876                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
 877         else
 878                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
 879
 880         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
 881                                     HostCmd_ACT_GEN_SET, 0,
 882                                     &priv->curr_pkt_filter);
 883
 884         return ret;
 885 }
 886
 887 /*
 888  * IOCTL request handler to set WPA key.
 889  *
 890  * This function prepares the correct firmware command and
 891  * issues it, after validation checks.
 892  *
 893  * Current driver only supports key length of up to 32 bytes.
 894  *
 895  * This function can also be used to disable a currently set key.
 896  */
 897 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
 898                               struct mwifiex_ds_encrypt_key *encrypt_key)
 899 {
 900         int ret;
 901         u8 remove_key = false;
 902         struct host_cmd_ds_802_11_key_material *ibss_key;
 903
 904         /* Current driver only supports key length of up to 32 bytes */
 905         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
 906                 dev_err(priv->adapter->dev, "key length too long\n");
 907                 return -1;
 908         }
 909
 910         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
 911                 /*
 912                  * IBSS/WPA-None uses only one key (Group) for both receiving
 913                  * and sending unicast and multicast packets.
 914                  */
 915                 /* Send the key as PTK to firmware */
 916                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 917                 ret = mwifiex_send_cmd_async(priv,
 918                                              HostCmd_CMD_802_11_KEY_MATERIAL,
 919                                              HostCmd_ACT_GEN_SET,
 920                                              KEY_INFO_ENABLED, encrypt_key);
 921                 if (ret)
 922                         return ret;
 923
 924                 ibss_key = &priv->aes_key;
 925                 memset(ibss_key, 0,
 926                        sizeof(struct host_cmd_ds_802_11_key_material));
 927                 /* Copy the key in the driver */
 928                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
 929                        encrypt_key->key_len);
 930                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
 931                        sizeof(ibss_key->key_param_set.key_len));
 932                 ibss_key->key_param_set.key_type_id
 933                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
 934                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
 935
 936                 /* Send the key as GTK to firmware */
 937                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
 938         }
 939
 940         if (!encrypt_key->key_index)
 941                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
 942
 943         if (remove_key)
 944                 ret = mwifiex_send_cmd_sync(priv,
 945                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 946                                             HostCmd_ACT_GEN_SET,
 947                                             !KEY_INFO_ENABLED, encrypt_key);
 948         else
 949                 ret = mwifiex_send_cmd_sync(priv,
 950                                             HostCmd_CMD_802_11_KEY_MATERIAL,
 951                                             HostCmd_ACT_GEN_SET,
 952                                             KEY_INFO_ENABLED, encrypt_key);
 953
 954         return ret;
 955 }
 956
 957 /*
 958  * IOCTL request handler to set/get network keys.
 959  *
 960  * This is a generic key handling function which supports WEP, WPA
 961  * and WAPI.
 962  */
 963 static int
 964 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
 965                               struct mwifiex_ds_encrypt_key *encrypt_key)
 966 {
 967         int status;
 968
 969         if (encrypt_key->is_wapi_key)
 970                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
 971         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
 972                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
 973         else
 974                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
 975         return status;
 976 }
 977
 978 /*
 979  * This function returns the driver version.
 980  */
 981 int
 982 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
 983                                int max_len)
 984 {
 985         union {
 986                 u32 l;
 987                 u8 c[4];
 988         } ver;
 989         char fw_ver[32];
 990
 991         ver.l = adapter->fw_release_number;
 992         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
 993
 994         snprintf(version, max_len, driver_version, fw_ver);
 995
 996         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
 997
 998         return 0;
 999 }
1000
1001 /*
1002  * Sends IOCTL request to set encoding parameters.
1003  *
1004  * This function allocates the IOCTL request buffer, fills it
1005  * with requisite parameters and calls the IOCTL handler.
1006  */
1007 int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
1008                        const u8 *key, int key_len, u8 key_index,
1009                        const u8 *mac_addr, int disable)
1010 {
1011         struct mwifiex_ds_encrypt_key encrypt_key;
1012
1013         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1014         encrypt_key.key_len = key_len;
1015
1016         if (kp && kp->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1017                 encrypt_key.is_igtk_key = true;
1018
1019         if (!disable) {
1020                 encrypt_key.key_index = key_index;
1021                 if (key_len)
1022                         memcpy(encrypt_key.key_material, key, key_len);
1023                 if (mac_addr)
1024                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1025                 if (kp && kp->seq && kp->seq_len)
1026                         memcpy(encrypt_key.pn, kp->seq, kp->seq_len);
1027         } else {
1028                 encrypt_key.key_disable = true;
1029                 if (mac_addr)
1030                         memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1031         }
1032
1033         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1034 }
1035
1036 /*
1037  * Sends IOCTL request to get extended version.
1038  *
1039  * This function allocates the IOCTL request buffer, fills it
1040  * with requisite parameters and calls the IOCTL handler.
1041  */
1042 int
1043 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1044 {
1045         struct mwifiex_ver_ext ver_ext;
1046
1047         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1048         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1049                                   HostCmd_ACT_GEN_GET, 0, &ver_ext))
1050                 return -1;
1051
1052         return 0;
1053 }
1054
1055 int
1056 mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
1057                            struct ieee80211_channel *chan,
1058                            unsigned int duration)
1059 {
1060         struct host_cmd_ds_remain_on_chan roc_cfg;
1061         u8 sc;
1062
1063         memset(&roc_cfg, 0, sizeof(roc_cfg));
1064         roc_cfg.action = cpu_to_le16(action);
1065         if (action == HostCmd_ACT_GEN_SET) {
1066                 roc_cfg.band_cfg = chan->band;
1067                 sc = mwifiex_chan_type_to_sec_chan_offset(NL80211_CHAN_NO_HT);
1068                 roc_cfg.band_cfg |= (sc << 2);
1069
1070                 roc_cfg.channel =
1071                         ieee80211_frequency_to_channel(chan->center_freq);
1072                 roc_cfg.duration = cpu_to_le32(duration);
1073         }
1074         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_REMAIN_ON_CHAN,
1075                                   action, 0, &roc_cfg)) {
1076                 dev_err(priv->adapter->dev, "failed to remain on channel\n");
1077                 return -1;
1078         }
1079
1080         return roc_cfg.status;
1081 }
1082
1083 int
1084 mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role)
1085 {
1086         if (GET_BSS_ROLE(priv) == bss_role) {
1087                 dev_dbg(priv->adapter->dev,
1088                         "info: already in the desired role.\n");
1089                 return 0;
1090         }
1091
1092         mwifiex_free_priv(priv);
1093         mwifiex_init_priv(priv);
1094
1095         priv->bss_role = bss_role;
1096         switch (bss_role) {
1097         case MWIFIEX_BSS_ROLE_UAP:
1098                 priv->bss_mode = NL80211_IFTYPE_AP;
1099                 break;
1100         case MWIFIEX_BSS_ROLE_STA:
1101         case MWIFIEX_BSS_ROLE_ANY:
1102         default:
1103                 priv->bss_mode = NL80211_IFTYPE_STATION;
1104                 break;
1105         }
1106
1107         mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
1108                               HostCmd_ACT_GEN_SET, 0, NULL);
1109
1110         return mwifiex_sta_init_cmd(priv, false);
1111 }
1112
1113 /*
1114  * Sends IOCTL request to get statistics information.
1115  *
1116  * This function allocates the IOCTL request buffer, fills it
1117  * with requisite parameters and calls the IOCTL handler.
1118  */
1119 int
1120 mwifiex_get_stats_info(struct mwifiex_private *priv,
1121                        struct mwifiex_ds_get_stats *log)
1122 {
1123         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1124                                      HostCmd_ACT_GEN_GET, 0, log);
1125 }
1126
1127 /*
1128  * IOCTL request handler to read/write register.
1129  *
1130  * This function prepares the correct firmware command and
1131  * issues it.
1132  *
1133  * Access to the following registers are supported -
1134  *      - MAC
1135  *      - BBP
1136  *      - RF
1137  *      - PMIC
1138  *      - CAU
1139  */
1140 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1141                                         struct mwifiex_ds_reg_rw *reg_rw,
1142                                         u16 action)
1143 {
1144         u16 cmd_no;
1145
1146         switch (le32_to_cpu(reg_rw->type)) {
1147         case MWIFIEX_REG_MAC:
1148                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1149                 break;
1150         case MWIFIEX_REG_BBP:
1151                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1152                 break;
1153         case MWIFIEX_REG_RF:
1154                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1155                 break;
1156         case MWIFIEX_REG_PMIC:
1157                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1158                 break;
1159         case MWIFIEX_REG_CAU:
1160                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1161                 break;
1162         default:
1163                 return -1;
1164         }
1165
1166         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1167
1168 }
1169
1170 /*
1171  * Sends IOCTL request to write to a register.
1172  *
1173  * This function allocates the IOCTL request buffer, fills it
1174  * with requisite parameters and calls the IOCTL handler.
1175  */
1176 int
1177 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1178                   u32 reg_offset, u32 reg_value)
1179 {
1180         struct mwifiex_ds_reg_rw reg_rw;
1181
1182         reg_rw.type = cpu_to_le32(reg_type);
1183         reg_rw.offset = cpu_to_le32(reg_offset);
1184         reg_rw.value = cpu_to_le32(reg_value);
1185
1186         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1187 }
1188
1189 /*
1190  * Sends IOCTL request to read from a register.
1191  *
1192  * This function allocates the IOCTL request buffer, fills it
1193  * with requisite parameters and calls the IOCTL handler.
1194  */
1195 int
1196 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1197                  u32 reg_offset, u32 *value)
1198 {
1199         int ret;
1200         struct mwifiex_ds_reg_rw reg_rw;
1201
1202         reg_rw.type = cpu_to_le32(reg_type);
1203         reg_rw.offset = cpu_to_le32(reg_offset);
1204         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1205
1206         if (ret)
1207                 goto done;
1208
1209         *value = le32_to_cpu(reg_rw.value);
1210
1211 done:
1212         return ret;
1213 }
1214
1215 /*
1216  * Sends IOCTL request to read from EEPROM.
1217  *
1218  * This function allocates the IOCTL request buffer, fills it
1219  * with requisite parameters and calls the IOCTL handler.
1220  */
1221 int
1222 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1223                     u8 *value)
1224 {
1225         int ret;
1226         struct mwifiex_ds_read_eeprom rd_eeprom;
1227
1228         rd_eeprom.offset = cpu_to_le16((u16) offset);
1229         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1230
1231         /* Send request to firmware */
1232         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1233                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1234
1235         if (!ret)
1236                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1237         return ret;
1238 }
1239
1240 /*
1241  * This function sets a generic IE. In addition to generic IE, it can
1242  * also handle WPA, WPA2 and WAPI IEs.
1243  */
1244 static int
1245 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1246                           u16 ie_len)
1247 {
1248         int ret = 0;
1249         struct ieee_types_vendor_header *pvendor_ie;
1250         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1251         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1252
1253         /* If the passed length is zero, reset the buffer */
1254         if (!ie_len) {
1255                 priv->gen_ie_buf_len = 0;
1256                 priv->wps.session_enable = false;
1257
1258                 return 0;
1259         } else if (!ie_data_ptr) {
1260                 return -1;
1261         }
1262         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1263         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1264         if (((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1265              (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1266             (pvendor_ie->element_id == WLAN_EID_RSN)) {
1267
1268                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1269                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1270                 priv->wps.session_enable = false;
1271
1272                 return ret;
1273         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1274                 /* IE is a WAPI IE so call set_wapi function */
1275                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1276
1277                 return ret;
1278         }
1279         /*
1280          * Verify that the passed length is not larger than the
1281          * available space remaining in the buffer
1282          */
1283         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1284
1285                 /* Test to see if it is a WPS IE, if so, enable
1286                  * wps session flag
1287                  */
1288                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1289                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1290                     (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1291                         priv->wps.session_enable = true;
1292                         dev_dbg(priv->adapter->dev,
1293                                 "info: WPS Session Enabled.\n");
1294                         ret = mwifiex_set_wps_ie(priv, ie_data_ptr, ie_len);
1295                 }
1296
1297                 /* Append the passed data to the end of the
1298                    genIeBuffer */
1299                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1300                        ie_len);
1301                 /* Increment the stored buffer length by the
1302                    size passed */
1303                 priv->gen_ie_buf_len += ie_len;
1304         } else {
1305                 /* Passed data does not fit in the remaining
1306                    buffer space */
1307                 ret = -1;
1308         }
1309
1310         /* Return 0, or -1 for error case */
1311         return ret;
1312 }
1313
1314 /*
1315  * IOCTL request handler to set/get generic IE.
1316  *
1317  * In addition to various generic IEs, this function can also be
1318  * used to set the ARP filter.
1319  */
1320 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1321                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1322                                      u16 action)
1323 {
1324         struct mwifiex_adapter *adapter = priv->adapter;
1325
1326         switch (gen_ie->type) {
1327         case MWIFIEX_IE_TYPE_GEN_IE:
1328                 if (action == HostCmd_ACT_GEN_GET) {
1329                         gen_ie->len = priv->wpa_ie_len;
1330                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1331                 } else {
1332                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1333                                                   (u16) gen_ie->len);
1334                 }
1335                 break;
1336         case MWIFIEX_IE_TYPE_ARP_FILTER:
1337                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1338                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1339                         adapter->arp_filter_size = 0;
1340                         dev_err(adapter->dev, "invalid ARP filter size\n");
1341                         return -1;
1342                 } else {
1343                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1344                                gen_ie->len);
1345                         adapter->arp_filter_size = gen_ie->len;
1346                 }
1347                 break;
1348         default:
1349                 dev_err(adapter->dev, "invalid IE type\n");
1350                 return -1;
1351         }
1352         return 0;
1353 }
1354
1355 /*
1356  * Sends IOCTL request to set a generic IE.
1357  *
1358  * This function allocates the IOCTL request buffer, fills it
1359  * with requisite parameters and calls the IOCTL handler.
1360  */
1361 int
1362 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1363 {
1364         struct mwifiex_ds_misc_gen_ie gen_ie;
1365
1366         if (ie_len > IEEE_MAX_IE_SIZE)
1367                 return -EFAULT;
1368
1369         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1370         gen_ie.len = ie_len;
1371         memcpy(gen_ie.ie_data, ie, ie_len);
1372         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1373                 return -EFAULT;
1374
1375         return 0;
1376 }