Pileus Git - ~andy/linux/blob - 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 = adapter->cmd_wait_q.status;
  58
  59         dev_dbg(adapter->dev, "cmd pending\n");
  60         atomic_inc(&adapter->cmd_pending);
  61
  62         /* Status pending, wake up main process */
  63         queue_work(adapter->workqueue, &adapter->main_work);
  64
  65         /* Wait for completion */
  66         wait_event_interruptible(adapter->cmd_wait_q.wait,
  67                                         adapter->cmd_wait_q.condition);
  68         if (!adapter->cmd_wait_q.condition)
  69                 cancel_flag = true;
  70
  71         if (cancel_flag) {
  72                 mwifiex_cancel_pending_ioctl(adapter);
  73                 dev_dbg(adapter->dev, "cmd cancel\n");
  74         }
  75         adapter->cmd_wait_q.status = 0;
  76
  77         return status;
  78 }
  79
  80 /*
  81  * This function prepares the correct firmware command and
  82  * issues it to set the multicast list.
  83  *
  84  * This function can be used to enable promiscuous mode, or enable all
  85  * multicast packets, or to enable selective multicast.
  86  */
  87 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  88                                 struct mwifiex_multicast_list *mcast_list)
  89 {
  90         int ret = 0;
  91         u16 old_pkt_filter;
  92
  93         old_pkt_filter = priv->curr_pkt_filter;
  94
  95         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
  96                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
  97                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
  98                 priv->curr_pkt_filter &=
  99                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 100         } else {
 101                 /* Multicast */
 102                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 103                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 104                         dev_dbg(priv->adapter->dev,
 105                                 "info: Enabling All Multicast!\n");
 106                         priv->curr_pkt_filter |=
 107                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 108                 } else {
 109                         priv->curr_pkt_filter &=
 110                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 111                         if (mcast_list->num_multicast_addr) {
 112                                 dev_dbg(priv->adapter->dev,
 113                                         "info: Set multicast list=%d\n",
 114                                        mcast_list->num_multicast_addr);
 115                                 /* Set multicast addresses to firmware */
 116                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 117                                         /* Send request to firmware */
 118                                         ret = mwifiex_send_cmd_async(priv,
 119                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 120                                                 HostCmd_ACT_GEN_SET, 0,
 121                                                 mcast_list);
 122                                 } else {
 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                                 }
 129                         }
 130                 }
 131         }
 132         dev_dbg(priv->adapter->dev,
 133                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 134                old_pkt_filter, priv->curr_pkt_filter);
 135         if (old_pkt_filter != priv->curr_pkt_filter) {
 136                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 137                                              HostCmd_ACT_GEN_SET,
 138                                              0, &priv->curr_pkt_filter);
 139         }
 140
 141         return ret;
 142 }
 143
 144 /*
 145  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 146  * In both Ad-Hoc and infra mode, an deauthentication is performed
 147  * first.
 148  */
 149 int mwifiex_bss_start(struct mwifiex_private *priv,
 150                       struct mwifiex_ssid_bssid *ssid_bssid)
 151 {
 152         int ret = 0;
 153         struct mwifiex_adapter *adapter = priv->adapter;
 154         s32 i = -1;
 155
 156         priv->scan_block = false;
 157         if (!ssid_bssid)
 158                 return -1;
 159
 160         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 161                 /* Infra mode */
 162                 ret = mwifiex_deauthenticate(priv, NULL);
 163                 if (ret)
 164                         return ret;
 165
 166                 /* Search for the requested SSID in the scan table */
 167                 if (ssid_bssid->ssid.ssid_len)
 168                         i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid,
 169                                                 NULL, NL80211_IFTYPE_STATION);
 170                 else
 171                         i = mwifiex_find_bssid_in_list(priv,
 172                                                 (u8 *) &ssid_bssid->bssid,
 173                                                 NL80211_IFTYPE_STATION);
 174                 if (i < 0)
 175                         return -1;
 176
 177                 dev_dbg(adapter->dev,
 178                         "info: SSID found in scan list ... associating...\n");
 179
 180                 /* Clear any past association response stored for
 181                  * application retrieval */
 182                 priv->assoc_rsp_size = 0;
 183                 ret = mwifiex_associate(priv, &adapter->scan_table[i]);
 184                 if (ret)
 185                         return ret;
 186         } else {
 187                 /* Adhoc mode */
 188                 /* If the requested SSID matches current SSID, return */
 189                 if (ssid_bssid->ssid.ssid_len &&
 190                     (!mwifiex_ssid_cmp
 191                      (&priv->curr_bss_params.bss_descriptor.ssid,
 192                       &ssid_bssid->ssid)))
 193                         return 0;
 194
 195                 /* Exit Adhoc mode first */
 196                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 197                 ret = mwifiex_deauthenticate(priv, NULL);
 198                 if (ret)
 199                         return ret;
 200
 201                 priv->adhoc_is_link_sensed = false;
 202
 203                 /* Search for the requested network in the scan table */
 204                 if (ssid_bssid->ssid.ssid_len)
 205                         i = mwifiex_find_ssid_in_list(priv,
 206                                                       &ssid_bssid->ssid, NULL,
 207                                                       NL80211_IFTYPE_ADHOC);
 208                 else
 209                         i = mwifiex_find_bssid_in_list(priv,
 210                                                        (u8 *)&ssid_bssid->bssid,
 211                                                        NL80211_IFTYPE_ADHOC);
 212
 213                 if (i >= 0) {
 214                         dev_dbg(adapter->dev, "info: network found in scan"
 215                                                         " list. Joining...\n");
 216                         ret = mwifiex_adhoc_join(priv, &adapter->scan_table[i]);
 217                         if (ret)
 218                                 return ret;
 219                 } else {
 220                         dev_dbg(adapter->dev, "info: Network not found in "
 221                                 "the list, creating adhoc with ssid = %s\n",
 222                                ssid_bssid->ssid.ssid);
 223                         ret = mwifiex_adhoc_start(priv, &ssid_bssid->ssid);
 224                         if (ret)
 225                                 return ret;
 226                 }
 227         }
 228
 229         return ret;
 230 }
 231
 232 /*
 233  * IOCTL request handler to set host sleep configuration.
 234  *
 235  * This function prepares the correct firmware command and
 236  * issues it.
 237  */
 238 int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 239                           int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 240
 241 {
 242         struct mwifiex_adapter *adapter = priv->adapter;
 243         int status = 0;
 244         u32 prev_cond = 0;
 245
 246         if (!hs_cfg)
 247                 return -ENOMEM;
 248
 249         switch (action) {
 250         case HostCmd_ACT_GEN_SET:
 251                 if (adapter->pps_uapsd_mode) {
 252                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 253                                 " is blocked in UAPSD/PPS mode\n");
 254                         status = -1;
 255                         break;
 256                 }
 257                 if (hs_cfg->is_invoke_hostcmd) {
 258                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 259                                 if (!adapter->is_hs_configured)
 260                                         /* Already cancelled */
 261                                         break;
 262                                 /* Save previous condition */
 263                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 264                                                         .conditions);
 265                                 adapter->hs_cfg.conditions =
 266                                                 cpu_to_le32(hs_cfg->conditions);
 267                         } else if (hs_cfg->conditions) {
 268                                 adapter->hs_cfg.conditions =
 269                                                 cpu_to_le32(hs_cfg->conditions);
 270                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 271                                 if (hs_cfg->gap)
 272                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 273                         } else if (adapter->hs_cfg.conditions ==
 274                                                 cpu_to_le32(
 275                                                 HOST_SLEEP_CFG_CANCEL)) {
 276                                 /* Return failure if no parameters for HS
 277                                    enable */
 278                                 status = -1;
 279                                 break;
 280                         }
 281                         if (cmd_type == MWIFIEX_SYNC_CMD)
 282                                 status = mwifiex_send_cmd_sync(priv,
 283                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 284                                                 HostCmd_ACT_GEN_SET, 0,
 285                                                 &adapter->hs_cfg);
 286                         else
 287                                 status = mwifiex_send_cmd_async(priv,
 288                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 289                                                 HostCmd_ACT_GEN_SET, 0,
 290                                                 &adapter->hs_cfg);
 291                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 292                                 /* Restore previous condition */
 293                                 adapter->hs_cfg.conditions =
 294                                                 cpu_to_le32(prev_cond);
 295                 } else {
 296                         adapter->hs_cfg.conditions =
 297                                 cpu_to_le32(hs_cfg->conditions);
 298                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 299                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 300                 }
 301                 break;
 302         case HostCmd_ACT_GEN_GET:
 303                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 304                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 305                 hs_cfg->gap = adapter->hs_cfg.gap;
 306                 break;
 307         default:
 308                 status = -1;
 309                 break;
 310         }
 311
 312         return status;
 313 }
 314
 315 /*
 316  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 317  *
 318  * This function allocates the IOCTL request buffer, fills it
 319  * with requisite parameters and calls the IOCTL handler.
 320  */
 321 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 322 {
 323         struct mwifiex_ds_hs_cfg hscfg;
 324
 325         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 326         hscfg.is_invoke_hostcmd = true;
 327
 328         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 329                                     cmd_type, &hscfg);
 330 }
 331 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 332
 333 /*
 334  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 335  *
 336  * This function allocates the IOCTL request buffer, fills it
 337  * with requisite parameters and calls the IOCTL handler.
 338  */
 339 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 340 {
 341         struct mwifiex_ds_hs_cfg hscfg;
 342
 343         if (adapter->hs_activated) {
 344                 dev_dbg(adapter->dev, "cmd: HS Already actived\n");
 345                 return true;
 346         }
 347
 348         adapter->hs_activate_wait_q_woken = false;
 349
 350         memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
 351         hscfg.is_invoke_hostcmd = true;
 352
 353         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 354                                                        MWIFIEX_BSS_ROLE_STA),
 355                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 356                                   &hscfg)) {
 357                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 358                 return false;
 359         }
 360
 361         wait_event_interruptible(adapter->hs_activate_wait_q,
 362                         adapter->hs_activate_wait_q_woken);
 363
 364         return true;
 365 }
 366 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 367
 368 /*
 369  * IOCTL request handler to get BSS information.
 370  *
 371  * This function collates the information from different driver structures
 372  * to send to the user.
 373  */
 374 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 375                          struct mwifiex_bss_info *info)
 376 {
 377         struct mwifiex_adapter *adapter = priv->adapter;
 378         struct mwifiex_bssdescriptor *bss_desc;
 379         s32 tbl_idx = 0;
 380
 381         if (!info)
 382                 return -1;
 383
 384         bss_desc = &priv->curr_bss_params.bss_descriptor;
 385
 386         info->bss_mode = priv->bss_mode;
 387
 388         memcpy(&info->ssid, &bss_desc->ssid,
 389                sizeof(struct mwifiex_802_11_ssid));
 390
 391         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 392
 393         info->bss_chan = bss_desc->channel;
 394
 395         info->region_code = adapter->region_code;
 396
 397         /* Scan table index if connected */
 398         info->scan_table_idx = 0;
 399         if (priv->media_connected) {
 400                 tbl_idx =
 401                         mwifiex_find_ssid_in_list(priv, &bss_desc->ssid,
 402                                                   bss_desc->mac_address,
 403                                                   priv->bss_mode);
 404                 if (tbl_idx >= 0)
 405                         info->scan_table_idx = tbl_idx;
 406         }
 407
 408         info->media_connected = priv->media_connected;
 409
 410         info->max_power_level = priv->max_tx_power_level;
 411         info->min_power_level = priv->min_tx_power_level;
 412
 413         info->adhoc_state = priv->adhoc_state;
 414
 415         info->bcn_nf_last = priv->bcn_nf_last;
 416
 417         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 418                 info->wep_status = true;
 419         else
 420                 info->wep_status = false;
 421
 422         info->is_hs_configured = adapter->is_hs_configured;
 423         info->is_deep_sleep = adapter->is_deep_sleep;
 424
 425         return 0;
 426 }
 427
 428 /*
 429  * The function sets band configurations.
 430  *
 431  * it performs extra checks to make sure the Ad-Hoc
 432  * band and channel are compatible. Otherwise it returns an error.
 433  *
 434  */
 435 int mwifiex_set_radio_band_cfg(struct mwifiex_private *priv,
 436                                struct mwifiex_ds_band_cfg *radio_cfg)
 437 {
 438         struct mwifiex_adapter *adapter = priv->adapter;
 439         u8 infra_band = 0;
 440         u8 adhoc_band = 0;
 441         u32 adhoc_channel = 0;
 442
 443         infra_band = (u8) radio_cfg->config_bands;
 444         adhoc_band = (u8) radio_cfg->adhoc_start_band;
 445         adhoc_channel = radio_cfg->adhoc_channel;
 446
 447         /* SET Infra band */
 448         if ((infra_band | adapter->fw_bands) & ~adapter->fw_bands)
 449                 return -1;
 450
 451         adapter->config_bands = infra_band;
 452
 453         /* SET Ad-hoc Band */
 454         if ((adhoc_band | adapter->fw_bands) & ~adapter->fw_bands)
 455                 return -1;
 456
 457         if (adhoc_band)
 458                 adapter->adhoc_start_band = adhoc_band;
 459         adapter->chan_offset = (u8) radio_cfg->sec_chan_offset;
 460         /*
 461          * If no adhoc_channel is supplied verify if the existing adhoc
 462          * channel compiles with new adhoc_band
 463          */
 464         if (!adhoc_channel) {
 465                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 466                      (priv, adapter->adhoc_start_band,
 467                      priv->adhoc_channel)) {
 468                         /* Pass back the default channel */
 469                         radio_cfg->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 470                         if ((adapter->adhoc_start_band & BAND_A)
 471                             || (adapter->adhoc_start_band & BAND_AN))
 472                                 radio_cfg->adhoc_channel =
 473                                         DEFAULT_AD_HOC_CHANNEL_A;
 474                 }
 475         } else {        /* Retrurn error if adhoc_band and
 476                            adhoc_channel combination is invalid */
 477                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 478                     (priv, adapter->adhoc_start_band, (u16) adhoc_channel))
 479                         return -1;
 480                 priv->adhoc_channel = (u8) adhoc_channel;
 481         }
 482         if ((adhoc_band & BAND_GN) || (adhoc_band & BAND_AN))
 483                 adapter->adhoc_11n_enabled = true;
 484         else
 485                 adapter->adhoc_11n_enabled = false;
 486
 487         return 0;
 488 }
 489
 490 /*
 491  * IOCTL request handler to set/get active channel.
 492  *
 493  * This function performs validity checking on channel/frequency
 494  * compatibility and returns failure if not valid.
 495  */
 496 int mwifiex_bss_set_channel(struct mwifiex_private *priv,
 497                             struct mwifiex_chan_freq_power *chan)
 498 {
 499         struct mwifiex_adapter *adapter = priv->adapter;
 500         struct mwifiex_chan_freq_power *cfp = NULL;
 501
 502         if (!chan)
 503                 return -1;
 504
 505         if (!chan->channel && !chan->freq)
 506                 return -1;
 507         if (adapter->adhoc_start_band & BAND_AN)
 508                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 509         else if (adapter->adhoc_start_band & BAND_A)
 510                 adapter->adhoc_start_band = BAND_G | BAND_B;
 511         if (chan->channel) {
 512                 if (chan->channel <= MAX_CHANNEL_BAND_BG)
 513                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 514                                         (priv, 0, (u16) chan->channel);
 515                 if (!cfp) {
 516                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 517                                         (priv, BAND_A, (u16) chan->channel);
 518                         if (cfp) {
 519                                 if (adapter->adhoc_11n_enabled)
 520                                         adapter->adhoc_start_band = BAND_A
 521                                                 | BAND_AN;
 522                                 else
 523                                         adapter->adhoc_start_band = BAND_A;
 524                         }
 525                 }
 526         } else {
 527                 if (chan->freq <= MAX_FREQUENCY_BAND_BG)
 528                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
 529                                                         priv, 0, chan->freq);
 530                 if (!cfp) {
 531                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211
 532                                                   (priv, BAND_A, chan->freq);
 533                         if (cfp) {
 534                                 if (adapter->adhoc_11n_enabled)
 535                                         adapter->adhoc_start_band = BAND_A
 536                                                 | BAND_AN;
 537                                 else
 538                                         adapter->adhoc_start_band = BAND_A;
 539                         }
 540                 }
 541         }
 542         if (!cfp || !cfp->channel) {
 543                 dev_err(adapter->dev, "invalid channel/freq\n");
 544                 return -1;
 545         }
 546         priv->adhoc_channel = (u8) cfp->channel;
 547         chan->channel = cfp->channel;
 548         chan->freq = cfp->freq;
 549
 550         return 0;
 551 }
 552
 553 /*
 554  * IOCTL request handler to set/get Ad-Hoc channel.
 555  *
 556  * This function prepares the correct firmware command and
 557  * issues it to set or get the ad-hoc channel.
 558  */
 559 static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
 560                                           u16 action, u16 *channel)
 561 {
 562         if (action == HostCmd_ACT_GEN_GET) {
 563                 if (!priv->media_connected) {
 564                         *channel = priv->adhoc_channel;
 565                         return 0;
 566                 }
 567         } else {
 568                 priv->adhoc_channel = (u8) *channel;
 569         }
 570
 571         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
 572                                     action, 0, channel);
 573 }
 574
 575 /*
 576  * IOCTL request handler to find a particular BSS.
 577  *
 578  * The BSS can be searched with either a BSSID or a SSID. If none of
 579  * these are provided, just the best BSS (best RSSI) is returned.
 580  */
 581 int mwifiex_bss_ioctl_find_bss(struct mwifiex_private *priv,
 582                                struct mwifiex_ssid_bssid *ssid_bssid)
 583 {
 584         struct mwifiex_adapter *adapter = priv->adapter;
 585         struct mwifiex_bssdescriptor *bss_desc;
 586         u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
 587         u8 mac[ETH_ALEN];
 588         int i = 0;
 589
 590         if (memcmp(ssid_bssid->bssid, zero_mac, sizeof(zero_mac))) {
 591                 i = mwifiex_find_bssid_in_list(priv,
 592                                                (u8 *) ssid_bssid->bssid,
 593                                                priv->bss_mode);
 594                 if (i < 0) {
 595                         memcpy(mac, ssid_bssid->bssid, sizeof(mac));
 596                         dev_err(adapter->dev, "cannot find bssid %pM\n", mac);
 597                         return -1;
 598                 }
 599                 bss_desc = &adapter->scan_table[i];
 600                 memcpy(&ssid_bssid->ssid, &bss_desc->ssid,
 601                                 sizeof(struct mwifiex_802_11_ssid));
 602         } else if (ssid_bssid->ssid.ssid_len) {
 603                 i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid, NULL,
 604                                               priv->bss_mode);
 605                 if (i < 0) {
 606                         dev_err(adapter->dev, "cannot find ssid %s\n",
 607                                         ssid_bssid->ssid.ssid);
 608                         return -1;
 609                 }
 610                 bss_desc = &adapter->scan_table[i];
 611                 memcpy(ssid_bssid->bssid, bss_desc->mac_address, ETH_ALEN);
 612         } else {
 613                 return mwifiex_find_best_network(priv, ssid_bssid);
 614         }
 615
 616         return 0;
 617 }
 618
 619 /*
 620  * IOCTL request handler to change Ad-Hoc channel.
 621  *
 622  * This function allocates the IOCTL request buffer, fills it
 623  * with requisite parameters and calls the IOCTL handler.
 624  *
 625  * The function follows the following steps to perform the change -
 626  *      - Get current IBSS information
 627  *      - Get current channel
 628  *      - If no change is required, return
 629  *      - If not connected, change channel and return
 630  *      - If connected,
 631  *          - Disconnect
 632  *          - Change channel
 633  *          - Perform specific SSID scan with same SSID
 634  *          - Start/Join the IBSS
 635  */
 636 int
 637 mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
 638 {
 639         int ret = 0;
 640         struct mwifiex_bss_info bss_info;
 641         struct mwifiex_ssid_bssid ssid_bssid;
 642         u16 curr_chan = 0;
 643
 644         memset(&bss_info, 0, sizeof(bss_info));
 645
 646         /* Get BSS information */
 647         if (mwifiex_get_bss_info(priv, &bss_info))
 648                 return -1;
 649
 650         /* Get current channel */
 651         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
 652                                              &curr_chan);
 653
 654         if (curr_chan == channel) {
 655                 ret = 0;
 656                 goto done;
 657         }
 658         dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
 659                         curr_chan, channel);
 660
 661         if (!bss_info.media_connected) {
 662                 ret = 0;
 663                 goto done;
 664         }
 665
 666         /* Do disonnect */
 667         memset(&ssid_bssid, 0, ETH_ALEN);
 668         ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
 669
 670         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
 671                                              (u16 *) &channel);
 672
 673         /* Do specific SSID scanning */
 674         if (mwifiex_request_scan(priv, &bss_info.ssid)) {
 675                 ret = -1;
 676                 goto done;
 677         }
 678         /* Start/Join Adhoc network */
 679         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 680         memcpy(&ssid_bssid.ssid, &bss_info.ssid,
 681                sizeof(struct mwifiex_802_11_ssid));
 682
 683         ret = mwifiex_bss_start(priv, &ssid_bssid);
 684 done:
 685         return ret;
 686 }
 687
 688 /*
 689  * IOCTL request handler to get rate.
 690  *
 691  * This function prepares the correct firmware command and
 692  * issues it to get the current rate if it is connected,
 693  * otherwise, the function returns the lowest supported rate
 694  * for the band.
 695  */
 696 static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
 697                                              struct mwifiex_rate_cfg *rate_cfg)
 698 {
 699         struct mwifiex_adapter *adapter = priv->adapter;
 700
 701         rate_cfg->is_rate_auto = priv->is_data_rate_auto;
 702         if (!priv->media_connected) {
 703                 switch (adapter->config_bands) {
 704                 case BAND_B:
 705                         /* Return the lowest supported rate for B band */
 706                         rate_cfg->rate = supported_rates_b[0] & 0x7f;
 707                         break;
 708                 case BAND_G:
 709                 case BAND_G | BAND_GN:
 710                         /* Return the lowest supported rate for G band */
 711                         rate_cfg->rate = supported_rates_g[0] & 0x7f;
 712                         break;
 713                 case BAND_B | BAND_G:
 714                 case BAND_A | BAND_B | BAND_G:
 715                 case BAND_A | BAND_B:
 716                 case BAND_A | BAND_B | BAND_G | BAND_AN | BAND_GN:
 717                 case BAND_B | BAND_G | BAND_GN:
 718                         /* Return the lowest supported rate for BG band */
 719                         rate_cfg->rate = supported_rates_bg[0] & 0x7f;
 720                         break;
 721                 case BAND_A:
 722                 case BAND_A | BAND_G:
 723                 case BAND_A | BAND_G | BAND_AN | BAND_GN:
 724                 case BAND_A | BAND_AN:
 725                         /* Return the lowest supported rate for A band */
 726                         rate_cfg->rate = supported_rates_a[0] & 0x7f;
 727                         break;
 728                 case BAND_GN:
 729                         /* Return the lowest supported rate for N band */
 730                         rate_cfg->rate = supported_rates_n[0] & 0x7f;
 731                         break;
 732                 default:
 733                         dev_warn(adapter->dev, "invalid band %#x\n",
 734                                adapter->config_bands);
 735                         break;
 736                 }
 737         } else {
 738                 return mwifiex_send_cmd_sync(priv,
 739                                             HostCmd_CMD_802_11_TX_RATE_QUERY,
 740                                             HostCmd_ACT_GEN_GET, 0, NULL);
 741         }
 742
 743         return 0;
 744 }
 745
 746 /*
 747  * IOCTL request handler to set rate.
 748  *
 749  * This function prepares the correct firmware command and
 750  * issues it to set the current rate.
 751  *
 752  * The function also performs validation checking on the supplied value.
 753  */
 754 static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
 755                                              struct mwifiex_rate_cfg *rate_cfg)
 756 {
 757         u8 rates[MWIFIEX_SUPPORTED_RATES];
 758         u8 *rate = NULL;
 759         int rate_index = 0;
 760         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 761         u32 i = 0;
 762         int ret = 0;
 763         struct mwifiex_adapter *adapter = priv->adapter;
 764
 765         if (rate_cfg->is_rate_auto) {
 766                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 767                 /* Support all HR/DSSS rates */
 768                 bitmap_rates[0] = 0x000F;
 769                 /* Support all OFDM rates */
 770                 bitmap_rates[1] = 0x00FF;
 771                 /* Support all HT-MCSs rate */
 772                 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
 773                         bitmap_rates[i + 2] = 0xFFFF;
 774                 bitmap_rates[9] = 0x3FFF;
 775         } else {
 776                 memset(rates, 0, sizeof(rates));
 777                 mwifiex_get_active_data_rates(priv, rates);
 778                 rate = rates;
 779                 for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
 780                         dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
 781                                 rate[i], rate_cfg->rate);
 782                         if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 783                                 break;
 784                 }
 785                 if (!rate[i] || (i == MWIFIEX_SUPPORTED_RATES)) {
 786                         dev_err(adapter->dev, "fixed data rate %#x is out "
 787                                "of range\n", rate_cfg->rate);
 788                         return -1;
 789                 }
 790                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 791
 792                 rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
 793
 794                 /* Only allow b/g rates to be set */
 795                 if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
 796                     rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
 797                         bitmap_rates[0] = 1 << rate_index;
 798                 } else {
 799                         rate_index -= 1; /* There is a 0x00 in the table */
 800                         if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
 801                             rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
 802                                 bitmap_rates[1] = 1 << (rate_index -
 803                                                    MWIFIEX_RATE_INDEX_OFDM0);
 804                 }
 805         }
 806
 807         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 808                                     HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 809
 810         return ret;
 811 }
 812
 813 /*
 814  * IOCTL request handler to set/get rate.
 815  *
 816  * This function can be used to set/get either the rate value or the
 817  * rate index.
 818  */
 819 static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
 820                                   struct mwifiex_rate_cfg *rate_cfg)
 821 {
 822         int status = 0;
 823
 824         if (!rate_cfg)
 825                 return -1;
 826
 827         if (rate_cfg->action == HostCmd_ACT_GEN_GET)
 828                 status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
 829         else
 830                 status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
 831
 832         return status;
 833 }
 834
 835 /*
 836  * Sends IOCTL request to get the data rate.
 837  *
 838  * This function allocates the IOCTL request buffer, fills it
 839  * with requisite parameters and calls the IOCTL handler.
 840  */
 841 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
 842                               struct mwifiex_rate_cfg *rate)
 843 {
 844         int ret = 0;
 845
 846         memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
 847         rate->action = HostCmd_ACT_GEN_GET;
 848         ret = mwifiex_rate_ioctl_cfg(priv, rate);
 849
 850         if (!ret) {
 851                 if (rate && rate->is_rate_auto)
 852                         rate->rate = mwifiex_index_to_data_rate(priv->tx_rate,
 853                                                         priv->tx_htinfo);
 854                 else if (rate)
 855                         rate->rate = priv->data_rate;
 856         } else {
 857                 ret = -1;
 858         }
 859
 860         return ret;
 861 }
 862
 863 /*
 864  * IOCTL request handler to set tx power configuration.
 865  *
 866  * This function prepares the correct firmware command and
 867  * issues it.
 868  *
 869  * For non-auto power mode, all the following power groups are set -
 870  *      - Modulation class HR/DSSS
 871  *      - Modulation class OFDM
 872  *      - Modulation class HTBW20
 873  *      - Modulation class HTBW40
 874  */
 875 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 876                          struct mwifiex_power_cfg *power_cfg)
 877 {
 878         int ret = 0;
 879         struct host_cmd_ds_txpwr_cfg *txp_cfg = NULL;
 880         struct mwifiex_types_power_group *pg_tlv = NULL;
 881         struct mwifiex_power_group *pg = NULL;
 882         u8 *buf = NULL;
 883         u16 dbm = 0;
 884
 885         if (!power_cfg->is_power_auto) {
 886                 dbm = (u16) power_cfg->power_level;
 887                 if ((dbm < priv->min_tx_power_level) ||
 888                     (dbm > priv->max_tx_power_level)) {
 889                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 890                                         " is out of range (%d dBm-%d dBm)\n",
 891                                         dbm, priv->min_tx_power_level,
 892                                         priv->max_tx_power_level);
 893                         return -1;
 894                 }
 895         }
 896         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 897         if (!buf) {
 898                 dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
 899                                 __func__);
 900                 return -1;
 901         }
 902
 903         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 904         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 905         if (!power_cfg->is_power_auto) {
 906                 txp_cfg->mode = cpu_to_le32(1);
 907                 pg_tlv = (struct mwifiex_types_power_group *) (buf +
 908                                 sizeof(struct host_cmd_ds_txpwr_cfg));
 909                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 910                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 911                 pg = (struct mwifiex_power_group *) (buf +
 912                                 sizeof(struct host_cmd_ds_txpwr_cfg) +
 913                                 sizeof(struct mwifiex_types_power_group));
 914                 /* Power group for modulation class HR/DSSS */
 915                 pg->first_rate_code = 0x00;
 916                 pg->last_rate_code = 0x03;
 917                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 918                 pg->power_step = 0;
 919                 pg->power_min = (s8) dbm;
 920                 pg->power_max = (s8) dbm;
 921                 pg++;
 922                 /* Power group for modulation class OFDM */
 923                 pg->first_rate_code = 0x00;
 924                 pg->last_rate_code = 0x07;
 925                 pg->modulation_class = MOD_CLASS_OFDM;
 926                 pg->power_step = 0;
 927                 pg->power_min = (s8) dbm;
 928                 pg->power_max = (s8) dbm;
 929                 pg++;
 930                 /* Power group for modulation class HTBW20 */
 931                 pg->first_rate_code = 0x00;
 932                 pg->last_rate_code = 0x20;
 933                 pg->modulation_class = MOD_CLASS_HT;
 934                 pg->power_step = 0;
 935                 pg->power_min = (s8) dbm;
 936                 pg->power_max = (s8) dbm;
 937                 pg->ht_bandwidth = HT_BW_20;
 938                 pg++;
 939                 /* Power group for modulation class HTBW40 */
 940                 pg->first_rate_code = 0x00;
 941                 pg->last_rate_code = 0x20;
 942                 pg->modulation_class = MOD_CLASS_HT;
 943                 pg->power_step = 0;
 944                 pg->power_min = (s8) dbm;
 945                 pg->power_max = (s8) dbm;
 946                 pg->ht_bandwidth = HT_BW_40;
 947         }
 948         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 949                                     HostCmd_ACT_GEN_SET, 0, buf);
 950
 951         kfree(buf);
 952         return ret;
 953 }
 954
 955 /*
 956  * IOCTL request handler to get power save mode.
 957  *
 958  * This function prepares the correct firmware command and
 959  * issues it.
 960  */
 961 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 962 {
 963         int ret = 0;
 964         struct mwifiex_adapter *adapter = priv->adapter;
 965         u16 sub_cmd;
 966
 967         if (*ps_mode)
 968                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 969         else
 970                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 971         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 972         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 973                                     sub_cmd, BITMAP_STA_PS, NULL);
 974         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 975                 ret = mwifiex_send_cmd_async(priv,
 976                                 HostCmd_CMD_802_11_PS_MODE_ENH, GET_PS,
 977                                 0, NULL);
 978
 979         return ret;
 980 }
 981
 982 /*
 983  * IOCTL request handler to set/reset WPA IE.
 984  *
 985  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 986  * is checked to determine WPA version. If buffer length is zero, the existing
 987  * WPA IE is reset.
 988  */
 989 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 990                                      u8 *ie_data_ptr, u16 ie_len)
 991 {
 992         if (ie_len) {
 993                 if (ie_len > sizeof(priv->wpa_ie)) {
 994                         dev_err(priv->adapter->dev,
 995                                 "failed to copy WPA IE, too big\n");
 996                         return -1;
 997                 }
 998                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 999                 priv->wpa_ie_len = (u8) ie_len;
1000                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
1001                                 priv->wpa_ie_len, priv->wpa_ie[0]);
1002
1003                 if (priv->wpa_ie[0] == WLAN_EID_WPA) {
1004                         priv->sec_info.wpa_enabled = true;
1005                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
1006                         priv->sec_info.wpa2_enabled = true;
1007                 } else {
1008                         priv->sec_info.wpa_enabled = false;
1009                         priv->sec_info.wpa2_enabled = false;
1010                 }
1011         } else {
1012                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
1013                 priv->wpa_ie_len = 0;
1014                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
1015                         priv->wpa_ie_len, priv->wpa_ie[0]);
1016                 priv->sec_info.wpa_enabled = false;
1017                 priv->sec_info.wpa2_enabled = false;
1018         }
1019
1020         return 0;
1021 }
1022
1023 /*
1024  * IOCTL request handler to set/reset WAPI IE.
1025  *
1026  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
1027  * is checked to internally enable WAPI. If buffer length is zero, the existing
1028  * WAPI IE is reset.
1029  */
1030 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
1031                                u8 *ie_data_ptr, u16 ie_len)
1032 {
1033         if (ie_len) {
1034                 if (ie_len > sizeof(priv->wapi_ie)) {
1035                         dev_dbg(priv->adapter->dev,
1036                                 "info: failed to copy WAPI IE, too big\n");
1037                         return -1;
1038                 }
1039                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
1040                 priv->wapi_ie_len = ie_len;
1041                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
1042                                 priv->wapi_ie_len, priv->wapi_ie[0]);
1043
1044                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
1045                         priv->sec_info.wapi_enabled = true;
1046         } else {
1047                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
1048                 priv->wapi_ie_len = ie_len;
1049                 dev_dbg(priv->adapter->dev,
1050                         "info: Reset wapi_ie_len=%d IE=%#x\n",
1051                        priv->wapi_ie_len, priv->wapi_ie[0]);
1052                 priv->sec_info.wapi_enabled = false;
1053         }
1054         return 0;
1055 }
1056
1057 /*
1058  * IOCTL request handler to set WAPI key.
1059  *
1060  * This function prepares the correct firmware command and
1061  * issues it.
1062  */
1063 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
1064                                struct mwifiex_ds_encrypt_key *encrypt_key)
1065 {
1066
1067         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1068                                     HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1069                                     encrypt_key);
1070 }
1071
1072 /*
1073  * IOCTL request handler to set WEP network key.
1074  *
1075  * This function prepares the correct firmware command and
1076  * issues it, after validation checks.
1077  */
1078 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1079                               struct mwifiex_ds_encrypt_key *encrypt_key)
1080 {
1081         int ret = 0;
1082         struct mwifiex_wep_key *wep_key = NULL;
1083         int index;
1084
1085         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
1086                 priv->wep_key_curr_index = 0;
1087         wep_key = &priv->wep_key[priv->wep_key_curr_index];
1088         index = encrypt_key->key_index;
1089         if (encrypt_key->key_disable) {
1090                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_DISABLED;
1091         } else if (!encrypt_key->key_len) {
1092                 /* Copy the required key as the current key */
1093                 wep_key = &priv->wep_key[index];
1094                 if (!wep_key->key_length) {
1095                         dev_err(priv->adapter->dev,
1096                                 "key not set, so cannot enable it\n");
1097                         return -1;
1098                 }
1099                 priv->wep_key_curr_index = (u16) index;
1100                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1101         } else {
1102                 wep_key = &priv->wep_key[index];
1103                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
1104                 /* Copy the key in the driver */
1105                 memcpy(wep_key->key_material,
1106                        encrypt_key->key_material,
1107                        encrypt_key->key_len);
1108                 wep_key->key_index = index;
1109                 wep_key->key_length = encrypt_key->key_len;
1110                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1111         }
1112         if (wep_key->key_length) {
1113                 /* Send request to firmware */
1114                 ret = mwifiex_send_cmd_async(priv,
1115                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1116                                              HostCmd_ACT_GEN_SET, 0, NULL);
1117                 if (ret)
1118                         return ret;
1119         }
1120         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
1121                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1122         else
1123                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1124
1125         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1126                                     HostCmd_ACT_GEN_SET, 0,
1127                                     &priv->curr_pkt_filter);
1128
1129         return ret;
1130 }
1131
1132 /*
1133  * IOCTL request handler to set WPA key.
1134  *
1135  * This function prepares the correct firmware command and
1136  * issues it, after validation checks.
1137  *
1138  * Current driver only supports key length of up to 32 bytes.
1139  *
1140  * This function can also be used to disable a currently set key.
1141  */
1142 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1143                               struct mwifiex_ds_encrypt_key *encrypt_key)
1144 {
1145         int ret = 0;
1146         u8 remove_key = false;
1147         struct host_cmd_ds_802_11_key_material *ibss_key;
1148
1149         /* Current driver only supports key length of up to 32 bytes */
1150         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1151                 dev_err(priv->adapter->dev, "key length too long\n");
1152                 return -1;
1153         }
1154
1155         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1156                 /*
1157                  * IBSS/WPA-None uses only one key (Group) for both receiving
1158                  * and sending unicast and multicast packets.
1159                  */
1160                 /* Send the key as PTK to firmware */
1161                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1162                 ret = mwifiex_send_cmd_async(priv,
1163                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1164                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1165                                         encrypt_key);
1166                 if (ret)
1167                         return ret;
1168
1169                 ibss_key = &priv->aes_key;
1170                 memset(ibss_key, 0,
1171                        sizeof(struct host_cmd_ds_802_11_key_material));
1172                 /* Copy the key in the driver */
1173                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
1174                        encrypt_key->key_len);
1175                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
1176                        sizeof(ibss_key->key_param_set.key_len));
1177                 ibss_key->key_param_set.key_type_id
1178                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
1179                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1180
1181                 /* Send the key as GTK to firmware */
1182                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
1183         }
1184
1185         if (!encrypt_key->key_index)
1186                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1187
1188         if (remove_key)
1189                 ret = mwifiex_send_cmd_sync(priv,
1190                                        HostCmd_CMD_802_11_KEY_MATERIAL,
1191                                        HostCmd_ACT_GEN_SET, !(KEY_INFO_ENABLED),
1192                                        encrypt_key);
1193         else
1194                 ret = mwifiex_send_cmd_sync(priv,
1195                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1196                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1197                                         encrypt_key);
1198
1199         return ret;
1200 }
1201
1202 /*
1203  * IOCTL request handler to set/get network keys.
1204  *
1205  * This is a generic key handling function which supports WEP, WPA
1206  * and WAPI.
1207  */
1208 static int
1209 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1210                               struct mwifiex_ds_encrypt_key *encrypt_key)
1211 {
1212         int status = 0;
1213
1214         if (encrypt_key->is_wapi_key)
1215                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1216         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1217                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1218         else
1219                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1220         return status;
1221 }
1222
1223 /*
1224  * This function returns the driver version.
1225  */
1226 int
1227 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1228                                int max_len)
1229 {
1230         union {
1231                 u32 l;
1232                 u8 c[4];
1233         } ver;
1234         char fw_ver[32];
1235
1236         ver.l = adapter->fw_release_number;
1237         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1238
1239         snprintf(version, max_len, driver_version, fw_ver);
1240
1241         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1242
1243         return 0;
1244 }
1245
1246 /*
1247  * Sends IOCTL request to get signal information.
1248  *
1249  * This function allocates the IOCTL request buffer, fills it
1250  * with requisite parameters and calls the IOCTL handler.
1251  */
1252 int mwifiex_get_signal_info(struct mwifiex_private *priv,
1253                             struct mwifiex_ds_get_signal *signal)
1254 {
1255         struct mwifiex_ds_get_signal info;
1256         int status = 0;
1257
1258         memset(&info, 0, sizeof(struct mwifiex_ds_get_signal));
1259         info.selector = ALL_RSSI_INFO_MASK;
1260
1261         /* Signal info can be obtained only if connected */
1262         if (!priv->media_connected) {
1263                 dev_dbg(priv->adapter->dev,
1264                         "info: Can not get signal in disconnected state\n");
1265                 return -1;
1266         }
1267
1268         status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
1269                                        HostCmd_ACT_GEN_GET, 0, signal);
1270
1271         if (!status) {
1272                 if (signal)
1273                         memcpy(signal, &info,
1274                                sizeof(struct mwifiex_ds_get_signal));
1275                 if (info.selector & BCN_RSSI_AVG_MASK)
1276                         priv->w_stats.qual.level = info.bcn_rssi_avg;
1277                 if (info.selector & BCN_NF_AVG_MASK)
1278                         priv->w_stats.qual.noise = info.bcn_nf_avg;
1279         }
1280
1281         return status;
1282 }
1283
1284 /*
1285  * Sends IOCTL request to set encoding parameters.
1286  *
1287  * This function allocates the IOCTL request buffer, fills it
1288  * with requisite parameters and calls the IOCTL handler.
1289  */
1290 int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
1291                         int key_len, u8 key_index, int disable)
1292 {
1293         struct mwifiex_ds_encrypt_key encrypt_key;
1294
1295         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1296         encrypt_key.key_len = key_len;
1297         if (!disable) {
1298                 encrypt_key.key_index = key_index;
1299                 if (key_len)
1300                         memcpy(encrypt_key.key_material, key, key_len);
1301         } else {
1302                 encrypt_key.key_disable = true;
1303         }
1304
1305         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1306 }
1307
1308 /*
1309  * Sends IOCTL request to get extended version.
1310  *
1311  * This function allocates the IOCTL request buffer, fills it
1312  * with requisite parameters and calls the IOCTL handler.
1313  */
1314 int
1315 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1316 {
1317         struct mwifiex_ver_ext ver_ext;
1318
1319         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1320         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1321                                     HostCmd_ACT_GEN_GET, 0, &ver_ext))
1322                 return -1;
1323
1324         return 0;
1325 }
1326
1327 /*
1328  * Sends IOCTL request to get statistics information.
1329  *
1330  * This function allocates the IOCTL request buffer, fills it
1331  * with requisite parameters and calls the IOCTL handler.
1332  */
1333 int
1334 mwifiex_get_stats_info(struct mwifiex_private *priv,
1335                        struct mwifiex_ds_get_stats *log)
1336 {
1337         int ret = 0;
1338         struct mwifiex_ds_get_stats get_log;
1339
1340         memset(&get_log, 0, sizeof(struct mwifiex_ds_get_stats));
1341         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1342                                     HostCmd_ACT_GEN_GET, 0, &get_log);
1343
1344         if (!ret) {
1345                 if (log)
1346                         memcpy(log, &get_log, sizeof(struct
1347                                         mwifiex_ds_get_stats));
1348                 priv->w_stats.discard.fragment = get_log.fcs_error;
1349                 priv->w_stats.discard.retries = get_log.retry;
1350                 priv->w_stats.discard.misc = get_log.ack_failure;
1351         }
1352
1353         return ret;
1354 }
1355
1356 /*
1357  * IOCTL request handler to read/write register.
1358  *
1359  * This function prepares the correct firmware command and
1360  * issues it.
1361  *
1362  * Access to the following registers are supported -
1363  *      - MAC
1364  *      - BBP
1365  *      - RF
1366  *      - PMIC
1367  *      - CAU
1368  */
1369 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1370                                         struct mwifiex_ds_reg_rw *reg_rw,
1371                                         u16 action)
1372 {
1373         u16 cmd_no;
1374
1375         switch (le32_to_cpu(reg_rw->type)) {
1376         case MWIFIEX_REG_MAC:
1377                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1378                 break;
1379         case MWIFIEX_REG_BBP:
1380                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1381                 break;
1382         case MWIFIEX_REG_RF:
1383                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1384                 break;
1385         case MWIFIEX_REG_PMIC:
1386                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1387                 break;
1388         case MWIFIEX_REG_CAU:
1389                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1390                 break;
1391         default:
1392                 return -1;
1393         }
1394
1395         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1396
1397 }
1398
1399 /*
1400  * Sends IOCTL request to write to a register.
1401  *
1402  * This function allocates the IOCTL request buffer, fills it
1403  * with requisite parameters and calls the IOCTL handler.
1404  */
1405 int
1406 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1407                   u32 reg_offset, u32 reg_value)
1408 {
1409         struct mwifiex_ds_reg_rw reg_rw;
1410
1411         reg_rw.type = cpu_to_le32(reg_type);
1412         reg_rw.offset = cpu_to_le32(reg_offset);
1413         reg_rw.value = cpu_to_le32(reg_value);
1414
1415         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1416 }
1417
1418 /*
1419  * Sends IOCTL request to read from a register.
1420  *
1421  * This function allocates the IOCTL request buffer, fills it
1422  * with requisite parameters and calls the IOCTL handler.
1423  */
1424 int
1425 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1426                  u32 reg_offset, u32 *value)
1427 {
1428         int ret = 0;
1429         struct mwifiex_ds_reg_rw reg_rw;
1430
1431         reg_rw.type = cpu_to_le32(reg_type);
1432         reg_rw.offset = cpu_to_le32(reg_offset);
1433         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1434
1435         if (ret)
1436                 goto done;
1437
1438         *value = le32_to_cpu(reg_rw.value);
1439
1440 done:
1441         return ret;
1442 }
1443
1444 /*
1445  * Sends IOCTL request to read from EEPROM.
1446  *
1447  * This function allocates the IOCTL request buffer, fills it
1448  * with requisite parameters and calls the IOCTL handler.
1449  */
1450 int
1451 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1452                     u8 *value)
1453 {
1454         int ret = 0;
1455         struct mwifiex_ds_read_eeprom rd_eeprom;
1456
1457         rd_eeprom.offset = cpu_to_le16((u16) offset);
1458         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1459
1460         /* Send request to firmware */
1461         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1462                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1463
1464         if (!ret)
1465                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1466         return ret;
1467 }
1468
1469 /*
1470  * This function sets a generic IE. In addition to generic IE, it can
1471  * also handle WPA, WPA2 and WAPI IEs.
1472  */
1473 static int
1474 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1475                           u16 ie_len)
1476 {
1477         int ret = 0;
1478         struct ieee_types_vendor_header *pvendor_ie;
1479         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1480         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1481
1482         /* If the passed length is zero, reset the buffer */
1483         if (!ie_len) {
1484                 priv->gen_ie_buf_len = 0;
1485                 priv->wps.session_enable = false;
1486
1487                 return 0;
1488         } else if (!ie_data_ptr) {
1489                 return -1;
1490         }
1491         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1492         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1493         if (((pvendor_ie->element_id == WLAN_EID_WPA)
1494              && (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui))))
1495                         || (pvendor_ie->element_id == WLAN_EID_RSN)) {
1496
1497                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1498                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1499                 priv->wps.session_enable = false;
1500
1501                 return ret;
1502         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1503                 /* IE is a WAPI IE so call set_wapi function */
1504                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1505
1506                 return ret;
1507         }
1508         /*
1509          * Verify that the passed length is not larger than the
1510          * available space remaining in the buffer
1511          */
1512         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1513
1514                 /* Test to see if it is a WPS IE, if so, enable
1515                  * wps session flag
1516                  */
1517                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1518                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC)
1519                                 && (!memcmp(pvendor_ie->oui, wps_oui,
1520                                                 sizeof(wps_oui)))) {
1521                         priv->wps.session_enable = true;
1522                         dev_dbg(priv->adapter->dev,
1523                                 "info: WPS Session Enabled.\n");
1524                 }
1525
1526                 /* Append the passed data to the end of the
1527                    genIeBuffer */
1528                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1529                                                                         ie_len);
1530                 /* Increment the stored buffer length by the
1531                    size passed */
1532                 priv->gen_ie_buf_len += ie_len;
1533         } else {
1534                 /* Passed data does not fit in the remaining
1535                    buffer space */
1536                 ret = -1;
1537         }
1538
1539         /* Return 0, or -1 for error case */
1540         return ret;
1541 }
1542
1543 /*
1544  * IOCTL request handler to set/get generic IE.
1545  *
1546  * In addition to various generic IEs, this function can also be
1547  * used to set the ARP filter.
1548  */
1549 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1550                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1551                                      u16 action)
1552 {
1553         struct mwifiex_adapter *adapter = priv->adapter;
1554
1555         switch (gen_ie->type) {
1556         case MWIFIEX_IE_TYPE_GEN_IE:
1557                 if (action == HostCmd_ACT_GEN_GET) {
1558                         gen_ie->len = priv->wpa_ie_len;
1559                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1560                 } else {
1561                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1562                                                   (u16) gen_ie->len);
1563                 }
1564                 break;
1565         case MWIFIEX_IE_TYPE_ARP_FILTER:
1566                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1567                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1568                         adapter->arp_filter_size = 0;
1569                         dev_err(adapter->dev, "invalid ARP filter size\n");
1570                         return -1;
1571                 } else {
1572                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1573                                                                 gen_ie->len);
1574                         adapter->arp_filter_size = gen_ie->len;
1575                 }
1576                 break;
1577         default:
1578                 dev_err(adapter->dev, "invalid IE type\n");
1579                 return -1;
1580         }
1581         return 0;
1582 }
1583
1584 /*
1585  * Sends IOCTL request to set a generic IE.
1586  *
1587  * This function allocates the IOCTL request buffer, fills it
1588  * with requisite parameters and calls the IOCTL handler.
1589  */
1590 int
1591 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1592 {
1593         struct mwifiex_ds_misc_gen_ie gen_ie;
1594
1595         if (ie_len > IW_CUSTOM_MAX)
1596                 return -EFAULT;
1597
1598         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1599         gen_ie.len = ie_len;
1600         memcpy(gen_ie.ie_data, ie, ie_len);
1601         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1602                 return -EFAULT;
1603
1604         return 0;
1605 }