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